Valve assembly

FIELD: machine building.

SUBSTANCE: valve assembly for control of fluid medium supply from a high pressure header to a working chamber of the mechanism operating with fluid medium includes the main valve, an auxiliary valve, and electromagnet and a core. The main valve includes an element of the main valve with the seating on the surface and the seat of the main valve. An auxiliary valve includes an auxiliary valve element. The auxiliary valve opens before the main valve so that pressure on the main valve element can be balanced. The core is connected to the auxiliary valve element and has the possibility of being moved along the channel passing between the first position and the second position. The connection between the core and the auxiliary valve element has the possibility of ensuring the core movement from the first position to the second position without the corresponding movement of the auxiliary valve element. The core moves from the first position closer to the electromagnet when the auxiliary valve opens by means of forces applied through the connection between the core and the auxiliary valve element. The mechanism operating with fluid medium is described.

EFFECT: creation of the valve assembly that is capable of being opened quickly against considerable pressure difference, thus reducing the power consumption.

17 cl, 10 dwg

 

The technical field

The present invention relates to the field of valvular nodes with an electronic circuit for control messages fluid between the reservoir and the working chamber of the mechanism operating with the fluid medium.

The level of invention

The mechanisms operating with fluid medium, include mechanisms driven fluid medium, and/or the mechanisms driving the fluid, such as pumps, motors and mechanisms that can perform the function of both pump and motor, at different operating modes. Although the invention will be illustrated with reference to applications in which the fluid medium is a liquid, such as a generally incompressible hydraulic fluid, an alternative fluid medium can be a gas.

When the mechanism is operating with a fluid medium, works as a pump, a reservoir of low pressure usually acts as a common source of fluid, and a reservoir of high pressure normally acts as a common drain for the fluid. When the mechanism is operating with a fluid medium, operates motor, manifold high pressure normally acts as a common source of fluid, and a reservoir of low pressure usually acts as a common drain for the fluid. Within this description and the accompanying formulas the image is placed, the terms "collector high pressure and manifold low pressure" refers to the collectors with higher and lower pressures relative to each other. The pressure difference between the manifold high pressure and low pressure and the absolute pressure in the manifold high pressure and low pressure will depend on the application. For example, the pressure difference may be greater in the case of the pump, which is optimized for the task with a powerful pump than the pump, which is optimized for accurate job overall movement of a fluid medium, such as a pump for the issuance of a measured quantity of fluid (e.g., liquid fuel), which may have only a minimal pressure difference between the manifold high pressure and low pressure. The mechanism operating with the fluid medium, may have more than one manifold low pressure.

Known mechanisms for working with fluid medium, which contain a lot of working chambers of cyclically varying volume, in which the movement of fluid through the working chamber is regulated electronically-controlled valves, putilovo and with the dependence of the phase cycles of working chamber volume, to determine the total flow of fluid through the mechanism. For example, EP 0 361927 discloses a method of controlling the flow of fluid through the multi-chamber pump by opening and/or closing of the electronically controlled Poppet valves, with the dependence of the phase cycles of working chamber volume, to regulate communicated to the e of the fluid between the individual working chambers of the pump and a reservoir of low pressure. As a result, the individual chambers are made with a choice of controller, putilovo to either move given a fixed amount of fluid, or jump the idle loop with no overall movement of a fluid medium, thus bringing the total consumption of the pump in dynamic according to consumption. EP 0 494236 perfected this principle and included in the electron-operated Poppet valves, which regulate the message for fluid between the individual working chambers and a reservoir of high pressure, thereby facilitating the enforcement mechanism operating with a fluid medium, the functions of either the pump or motor, in alternative operating modes. EP 1 537 333 introduced the possibility of incomplete cycles, enabling the individual cycles of the individual working chambers to move any of a variety of different volumes of fluid, in order to better match consumption.

The mechanisms operating with fluid medium, this type require rapid opening and closing of the electronically-controlled valve capable of regulating the flow of fluid to and from the working chamber of the manifold low pressure, and in some embodiments, execution of manifold pressure. The purpose of some aspects of the present invention is the provision of improved valve nodes, approaching them to regulate fluid flow into and from the working chamber of the mechanism, working with fluid environment of this type. However, the valve nodes of the present invention is applicable to other types of mechanism operating with the fluid medium.

Some aspects of the present invention also solves the problem of valve opening with landing on the surface, such as a Poppet valve against the pressure difference, to regulate the flow of fluid from the reservoir to the high pressure in the working chamber of the mechanism operating with the fluid medium. It is technically challenging because the valve with landing on the surface of the pressure fluid acts on the bearing surface to create a substantial closing force. Accordingly, it is difficult to provide the valve with landing on the surface to regulate the flow of fluid from the reservoir to the high pressure in the working chamber of the mechanism operating with a fluid medium that is capable of opening against a significant pressure difference and which is also able to quickly open up (ideally within a few milliseconds), at the same time reducing energy consumption.

GB 2430246 (Stein) opens the valve site, which is suitable to regulate the flow of fluid from the reservoir to the high pressure in the working chamber of the mechanism operating with the fluid medium. Valve node contains the main valve, auxiliary valve, the electromagnet and the core(called a movable pole). The main valve contains an element of the main valve with landing on the surface and the main valve seat. The auxiliary valve is integral with the main valve and includes an element of the pilot valve, which is arranged to move between a sealing position and an open position in which is provided a channel through an auxiliary valve for the flow of fluid between opposite sides of the element of the main valve to reduce the pressure difference on the element of the main valve. Thus, the auxiliary valve, which has a much smaller surface area compared to the main valve can be opened even when there is considerable pressure on the element of the main valve. The working chamber is actually a closed volume, and thus fluid can flow through the auxiliary valve to balance the pressure on both sides of the element of the main valve, thereby facilitating opening of the main valve.

In this design, disclosed in GB 2430246, the core is made to move along the channel, continuing between the first position and the second position that is closer to the electromagnet. The core is elastically connected to the auxiliary element of the valve spring 12. The core also of the is EN element of the auxiliary valve, in an embodiment of figures 5, or made integral with the element of the pilot valve in the embodiment of figure 1. Thus, the moving core is rigidly connected with the moving element of the pilot valve, and thus the auxiliary valve is opened by the initial movement of the core when the solenoid just joined. Practically, it was found that it is difficult to create a sufficient force from the electromagnet to the core without excessive energy consumption. This is particularly relevant in an embodiment of figures 5 GB 2430246, where the auxiliary valve is a valve with landing on the surface with the same orientation as the main valve and thus also subject to significant closing forces due to the pressure difference between the inlet and the outlet. Accordingly, the purpose of some aspects of the present invention is the provision of an improved valve of the node, which can be opened against a greater pressure difference, or faster, or with less energy consumption than the valve nodes, disclosed in GB 2430246.

Other technical problem that may occur with valves nodes, including valves with landing on the surface (such as Poppet valves)made with the possibility electr the frame enable, to regulate the flow of fluid into the working chamber of the machine, working in a fluid environment, refers to the requirement of holding the valve with landing on the surface in the open position until the fluid flows through the valve. The Bernoulli effect (kinetic energy associated with the pressure drop and surface friction during the flow of fluid through the valve element with landing on the surface (e.g., a plate) can exert significant force on the valve element with landing on the surface. Thus, it may be necessary to continue to supply significant power to the electromagnet to hold the valve with landing on the surface in the open position, or this effect may limit the peak rate of flow through the valve. In the valve site, opened in GB 2430246 valve with landing on the surface is held in open position by a spring. Practically, this spring is extremely difficult to provide a sufficient force for holding the valve in open position against the force of Bernoulli and strength of surface friction. Accordingly, some embodiments of the invention solve the problem of retention in the open position of the valve with landing on the surface made with the possibility of e-inclusion, while fluid flows through the valve from the manifold low sludge is high pressure in the working chamber of the mechanism, working with fluid medium, or in the opposite direction.

The invention

According to the first aspect of the present invention provided with a valve unit for controlling the feed of fluid from the reservoir to the high pressure in the working chamber of the mechanism operating with a fluid medium, and valve node contains the main valve, auxiliary valve, solenoid and core, and the main valve contains an element of the main valve with landing on the surface and the main valve seat, and an auxiliary valve element contains an auxiliary valve arranged to move between a sealing position and an open position in which is provided a channel through an auxiliary valve for the flow of fluid between opposite sides of the element of the main valve to reduce the pressure difference on the item the main valve, in which the core is connected to the element of the pilot valve and configured to move along the channel, continuing between the first position and the second position and the second position is closer to the magnet than the first position, in which, in the first position, the element of the main valve refused to seat the main valve and auxiliary valve rejected in sealing position, and the second is ogenyi, element of the main valve rejected from the seat of the main valve and auxiliary valve rejected in the open position, characterized in that the connection between the core element, and the auxiliary valve is arranged to provide movement of the core from the first position to the second position without corresponding movement of the element of the pilot valve, but applying forces through the connection between the core and the element of the pilot valve to cause the moving element of the pilot valve and thereby opening the pilot valve, while the core is in position between the first position and the second position along the channel.

In contrast to the valve disclosed in GB 2430246, the core is part of the way along the channel from the first position to the second position and thus closer to the electromagnet, when the power through the connection between the core and the element of the pilot valve causes the moving element of the pilot valve and thereby opening the pilot valve. As the core is moved toward the electromagnet, the magnetic force acting on the core due to the electromagnet, should increase. Accordingly, the force that can be applied to support the tion of the valve core, through the connection between the core element, and the auxiliary valve, more than would have occurred in the valve, such as disclosed in GB 2430246, where the core is located at the most remote point from the electromagnet when the element of the pilot valve begins to move. This may allow the opening of the main valve faster, more reliably, at a higher pressure or with less energy consumption than if the core was rigidly attached to the element of the pilot valve.

Preferably, the element of the pilot valve is a valve with landing on the surface, and the auxiliary valve further comprises a seat auxiliary valve for sealing engagement with an element of the pilot valve. The auxiliary valve is usually oriented in the same direction as the main valve so that when the valve unit is used in the mechanism operating with the fluid medium so that there is a pressure difference of the fluid that applies a force, the retaining element of the main valve in sealing contact with the main valve seat, power in the same way would keep the element of the pilot valve in sealing contact with the seat of the auxiliary valve. The invention is of particular benefit when the auxiliary valve is a valve with landing on top of the spine, since a substantial effort may be required to open the pilot valve with landing on the surface against the pressure difference. Preferably, the cross-sectional area of the seat of the auxiliary valve is less than 10%, and more preferably less than 5% of the sectional area of the main valve seat so that the force holding the auxiliary valve in the closed position due to the pressure difference between the inlet and the outlet, was significantly less than the corresponding forces that hold the main valve in the closed position.

Preferably, the auxiliary valve continues through the element of the main valve to allow for the fluid through the element of the main valve when the auxiliary valve is in the open position to reduce the pressure difference between opposite sides of the element of the main valve. Thus, the seat of the auxiliary valve may be made integral with the element of the main valve. Element of the main valve and the auxiliary element of the valve can be aligned and preferably move along a helical path during use.

Preferably, the connection between the core and the element of the pilot valve includes an elastic element (auxiliary elastic element), which is made with an option of accumulation of elastic energy as the core moves along the channel from the first position to the second position. This provides a mechanism able to move the core from the first position without beginning the item to move the pilot valve and allows an increase in the effort acting on the element of the pilot valve, until then, until it reaches the effort required to open the item auxiliary valve against the pressure difference when using. Preferably, the elastic energy accumulated in the moving core from the first position, is used to bias the pilot valve in open position and for shifting element of the main valve to lift from the seat of the main valve.

Preferably, the force applied to the element of the pilot valve through the connection, monotonically increases as the displacement of the core from the first position to the second position, at least up until the element of the pilot valve starts to move. The core can move in a straight line that extends from the first position to the second position, directly to the electromagnet.

The connection between the core element, and the auxiliary valve may contain (or consist of) a limiting mechanism, which is accomplished with the possibility of engagement to limit the maximum distance between the core and the sealing part of the pilot valve and thus linking the movement of the core with the movement of the auxiliary valve along the stretch of the canal between the first position and the second position. In this case, the core may start to move from the first position to the second position without moving element of the auxiliary valve, however, the core reaches a position between the first position and the second position, which included limiting mechanism, and further movement of the core must be associated with a concomitant movement of the element of the pilot valve. The connection between the core element, and the auxiliary valve may contain either or both of the limiting mechanism and said auxiliary elastic element.

Preferably, the valve site contains essentially rigid rod which extends through the hole in the core, which is rigidly connected to the element of the pilot valve on the first side of the core, located in the working chamber during use, and is connected to the core of the elastic element on the opposite second side of the core so that the core continues around and moves along an essentially rigid rod when using, as the core moves along the channel from the first position. Preferably, essentially rigid rod further comprises a formation on the second side of the core which engages with the core in the above-mentioned position between the first position and the second position, to the core is pulled to the opening of the auxiliary valve in said position between the first position and the second position. In this case, referred to education and the surface of the core, which engages with the said formation, may together form a bounding mechanism.

The core and the element of the main valve can be connected with a limiting mechanism that is configured to engage to limit the maximum distance between the core and the element of the main valve, so as to associate the movement of the core with the moving element of the main valve along the stretch of the canal between the first position and the second position. For example, the core may contain an element of the main valve, siteplease education, to engage and open the main valve when the core is located between the first position and the second position.

The core may be made with the possibility of snagging first auxiliary valve and then with the element of the main valve as the core is moved from the first position to the second position during valve opening to extend to the opening of the auxiliary valve, before moving element of the main valve and then to raise the element of the main valve seat main valve.

About the commonly, at least one elastic element, including the aforementioned auxiliary elastic element, together exert a deflecting force to the core, to reject the core in the first position. Also preferably, the aforementioned deflecting force increases as the core is moved from the first position to the second position, where the increase of deflective force with distance is less than the increase in the force applied by the electromagnet to the core during use, due to the reduced distance between the magnet and the core, at least when the core is located between the first position and a second position in which the element of the pilot valve begins to move.

Valve node can contain the main elastic element, which deflects the element of the main valve to sealing contact with the main valve seat. Preferably, the main elastic element rejects the core in the first position, and the core engages with the element of the main valve when the core is in the first position so that in the first position of the main elastic element rejected the core to the contact element of the main valve and thus rejected the element of the main valve to sealing contact with the main valve seat.

The valve units in which the elastic e is ement (for example, mentioned main elastic element) acts directly on the core (for example, attached to the valve body and the core to move the core to the locking element of the main valve and biases the element of the main valve in sealing contact with the main valve seat, are preferred as they start to close as soon as the core is no longer held by the electromagnet in the second position. Thus, they can be quickly closed. They can also be energy efficient, because the energy accumulated in the elastic element, which acts directly on the core during the opening, is used when closing.

Where the valve site contains auxiliary elastic element, which is attached to the core and the element of the pilot valve (for example, attached to the essentially rigid rod which is made integral with or attached to the element of the pilot valve and which extends through the aperture in the core), and the main elastic element attached to the valve body and the core, the main and auxiliary elastic elements may be a helical spring, and the main elastic element continues around the auxiliary elastic element. This design facilitates the provision of a compact klapa the aqueous node and reduces the axial length of the valve.

Preferably, the auxiliary valve is rejected in the closed position, for example an elastic element. Thus, when the auxiliary valve is a valve with landing on the surface element of the pilot valve may be rejected prior to sealing contact with the seat of the auxiliary valve, for example an elastic element.

Preferably provided with an elastic element, which deflects the element of the main valve from the main valve seat. Mentioned elastic element may, for example, be attached to the core or casing of the valve block. Preferably, the aforementioned elastic element is located so that the force applied to the mentioned elastic element increased as soon as the auxiliary valve is open. However, the aforesaid elastic element should make less deflective force than the main elastic element, when the core is in the first position so that the total deflection force on the element of the main valve when the core is in the first position, rejected the element of the main valve to sealing contact with the main valve seat.

May be provided with a third elastic element, which has a first end that is attached to the element of the auxiliary valve, and a second end that is attached to the element of the main valve. So about what atom, the third elastic element can operate to reject the pilot valve in closed position, and for rejecting element of the main valve from the main valve seat. The third elastic element should make less deflective force than the main elastic element, when the core is in the first position so that the total deflection force on the element of the main valve when the core is in the first position and the auxiliary valve is closed, dismissed element of the main valve to sealing contact with the main valve seat. The third elastic element is usually compressed or further compressed when the auxiliary valve is first opened and, therefore, provides an additional force deflecting element of the main valve from the main valve seat.

Preferably, the elastic element, which is attached to the element of the pilot valve, for example, said third elastic element, may be located in a recess within an element of the main valve, for example inside the hole, which forms part of these channel through the auxiliary valve. Thus, the mentioned elastic element can be protected element of the main valve from the strong flow of the fluid. The elastic element may be located entirely within the recess in the element of the main valve, when the core is in contact with the element of the main valve. Preferably, the aforementioned elastic element configured to bias the element of the main valve to lift from the seat of the main valve, at least when the auxiliary valve is in the open position.

The core may be connected to the main valve by means of the connection between the core and the auxiliary valve, for example, by using the auxiliary elastic element and the third elastic element.

It is possible that the main valve disposed opening mainly or solely elastic element is attached between an element of the main valve element, and the auxiliary valve. On the contrary, if the main valve was rejected for the opening of the elastic element is attached between the valve body and an element of the main valve, it will provide the force which must be overcome during the closing, slowing the closing of the valve and increasing the effort required for each elastic element and thus increasing the energy consumed to compress mentioned elastic closing element in the opening.

Preferably, the position of the core, in which the connection between the core element, and the auxiliary valve can cause the moving element of the auxiliary materials is inogo valve, more than 50%, or more preferably more than 70% of the distance from the first position to the second position.

Preferably, once the element of the pilot valve begins to move, it moves at a greater distance than the remaining movement of the core along the channel from the first position to the second position.

Usually, when the core is in the second position, the auxiliary valve is closed or can be closed, especially when the main valve is open. Usually the auxiliary valve should open to allow the opening of the main valve, although it may be optional stay the pilot valve open, once opened, the main valve.

Preferably, the inner space of the valve device is made to reduce restrictions to movement of the core from the first position because of the requirements of the displacements of the hydraulic fluid. Preferably, the moving core is slightly restricted flow of hydraulic fluid through the throttle (e.g., hole, are of such dimensions to create a significant pressure difference at the orifice during use). This reduces the force restricting the movement of the core, slowing down the opening and/or closing of the valve.

The auxiliary element clap is on usually moves in volume, the receiving element of the pilot valve when the auxiliary valve is moved from the sealing position to the open position. The volume of the receiving element of the pilot valve, normally filled with hydraulic fluid medium using, which moves the moving element of the pilot valve. Unlike valves for pressure equalization, the moving core from the first position usually does not affect or increase the pressure of the hydraulic fluid in the volume of the receiving element of the pilot valve. This is primary because the calculation of the moving core to reduce the pressure within the volume, the receiving element of the pilot valve can delay the opening of the valve and particularly to slow it down closure. Preferably the flow of hydraulic fluid to and from the volume of the receiving element of the pilot valve, adjustable. Thus, the valve can be quickly closed without delay throttling the flow of flow of hydraulic fluid into the volume of the receiving element of the pilot valve.

The invention in the second aspect covers the mechanism operating with a fluid medium containing the working chamber of cyclically changing volume, a reservoir of high pressure and low collector giving is to be placed, and valve node according to the first aspect of the invention, which regulates the flow of fluid from manifold high pressure or manifold low pressure in the working chamber.

When the auxiliary valve is opened, fluid can flow from the respective reservoir through an auxiliary valve in the working chamber. Since the working chamber is closed by the camera (although the camera has a cyclically changing volume), the pressure inside the chamber can be balanced with the pressure inside the corresponding reservoir to reduce the pressure difference on the element of the main valve and allow the main valve to open. Preferably, the pressure difference on the element of the main valve is reduced mainly by the change of pressure inside the working chamber to balance with the pressure in the respective reservoir, the fluid flowing through the auxiliary valve, after the element of the auxiliary valve is moved to open position, before the element of the main valve climbed from the saddle of the main valve. Preferably, the pressure difference on the element of the main valve is not reduced mainly to ensure the camera inside the valve block communicating with the element of the main valve, the pressure inside drops below the pressure in testwuide manifold, to allow the element of the main valve to open.

The mechanism operating with the fluid medium may further comprise a controller, which is made with the possibility of active management of the mentioned valve site, and optionally one or more other valves with the dependence of the phase cycles of working chamber volume, to determine the total displacement of fluid from one or each working chamber of putilovo, to thereby determine the time-averaged total displacement of the fluid working machine, or one of the groups mentioned working chambers.

Preferably, the pressure difference between the reservoir and high pressure manifold low pressure and the current which is supplied to the electromagnet when used, are such that the force applied to the core of the electromagnet when the core is in the first position, will be enough to open the auxiliary valve against the differential pressure equal to the pressure difference between the reservoir and high pressure manifold low pressure, but the force applied to the core of the electromagnet, sufficient to open the auxiliary valve against the differential pressure equal to the pressure difference between the reservoir and high pressure manifold low pressure, when the core is in place between the first position and what that position.

The engine that runs on fluid, can function only of the motor. Alternatively, an engine that runs on fluid, may function as a motor or pump in alternative operating modes.

According to a third aspect of the present invention provided with a valve unit for regulating the supply of fluid from a reservoir of fluid in the working chamber of the mechanism operating with a fluid medium, and the valve has a main valve, a solenoid and core, and the main valve contains an element of the main valve with landing on the surface and the main valve seat and has an open position in which the element of the main valve is separated from the main valve seat, and a sealing position in which the element of the main valve plataue contact with the main valve seat, in which the core is made to move along the channel, continuing between the first position and the second position, and in which, when the core is in the first position, the element of the main valve rejected in sealing position, and in which, when the core is in the second position, the element of the main valve rejected in the open position, characterized in that the element of the main valve contains a ferromagnetic element, and the valve further comprises a magnetic circuit, you is olanow with direction of magnetic flux through the ferromagnetic element, when the main valve is open, so as to keep the element of the main valve in the open position.

Thus, when the main valve is open and current is supplied to the electromagnet, the element of the main valve is at the lowest potential energy of the magnetic field, opposing force Bernoulli and surface friction force acting on the element of the main valve due to flow of the fluid past the element of the main valve, through the valve seat. Consequently, the valve element is particularly useful in the mechanisms of working with fluid medium, which provides a relatively high velocity of the fluid flow. Valve site, for example, can be used to regulate the flow of fluid from the collector to the fluid pressure in the working chamber of the motor, operating in a fluid medium (such as a mechanism operating with a fluid medium, which acts only as a motor or as a pump or motor in alternative operating modes). However, the valve site can also be useful to regulate the flow of fluid from the reservoir to the low pressure in the working chamber of the motor, operating in a fluid environment.

Element of the main valve may include a ferromagnetic element, and one or more non-ferromagnetic participants the basic element of the valve. However, the element of the main valve may be entirely of a ferromagnetic element.

As element of the main valve rejected in the open position when the core is in the second position, preferably one or more elastic elements, the holding force generated by the magnetic flux directed through the ferromagnetic element provides an additional force to hold the element of the main valve in the open position, and not counter-deflection element of the main valve in closed position.

Preferably, the element of the main valve rejected in sealing position when the core is in the first position, and the element of the main valve rejected in the closed position when the core is in the first position, one or more elastic elements. The core is usually made so that they can move relative to the element of the main valve. Thus, the direction of the magnetic flux through the ferromagnetic element when the main valve is open, it is possible to avoid the closing element of the main valve due to the forces acting on an element of the main valve by the fluid flow, without concomitant movement of the core.

Preferably, the element of the main valve comprises a sealing area that PR is sealing contact with the main valve seat, and the magnetic circuit is arranged to flow through the seal area when the main valve is open. Thus, the holding force is concentrated where it is needed most.

An electromagnet is usually made with the possibility of expansion of the core during use to thereby open the main valve. Usually, the second position is closer to the magnet than the first position. The magnetic circuit is preferably directs the magnetic flux of said electromagnet through the ferromagnetic element when the main valve is in the open position, to thereby retain the element of the main valve until the electromagnet is turned on. Thus, when current is supplied to the electromagnet, as he opens the main valve and holds the element of the main valve in the open position. Alternatively, the second electromagnet may be provided in the magnetic circuit to provide a magnetic field for holding an element of the main valve.

Preferably, the magnetic circuit is arranged to a direction of magnetic flux through the ferromagnetic core, as when the element of the main valve is in the open position, and when the element of the main valve is in sealing position, in which the magnetic circuit is made with the possibility of sending inanaga flow of higher density through the ferromagnetic element, when the element of the main valve is in the open position. Thus, the magnetic circuit can operate to increase the attractive force between the electromagnet and core to open the main valve, and to provide sufficient potential energy of the magnetic field to keep the element of the main valve in the open position.

Preferably, the magnetic circuit includes the first and second magnetic circuit, which is configured to conduct magnetic flux in parallel, in which the first section of magnetic circuit configured to conduct magnetic flux through the core, at least when the main valve is in sealing position and the core is in the first position and the second section of magnetic circuit configured to conduct magnetic flux through the ferromagnetic element at least when the main valve is in the open position and the core is in the second position. Preferably, the first portion of the magnetic circuit is configured to conduct magnetic flux through the core when the core is in the first position, and when the core is in the second position. The second section of magnetic circuit may be configured to conduct magnetic flux through ferro is agnity element as element of the main valve is in the open position, and when the element of the main valve is in sealing position.

The first area of the magnetic circuit preferably includes a contact bridge is arranged to flow through the core, at least when the core is in the first position, and usually also, when the core is in the second position. Usually, the core is made to move along an axis between first and second positions. Contact bridge, for example, can contain many continuing radially inward of the elements of the magnetic circuit arranged essentially normal to said axis to direct the flow through the core. The core may include a peripheral flange of magnetically impermeable material near the contact bridge, through which may be formed by the magnetic circuit when the core is in the first position, the second position or between the first and second positions.

Usually, the magnetic circuit contains a plot of the ferromagnetic body, and the core is separated from the site of the ferromagnetic body in the first position and in contact with the area of the ferromagnetic body in the second position.

Preferably, the second section of magnetic circuit is set so that when the element of the main valve is in the open position, a continuous body of f is romagnano material performed directly between the ferromagnetic element and the area of the ferromagnetic body. It may be that in the open position of the ferromagnetic element is in contact with the core while the core is in contact with a plot of the ferromagnetic body. It may be that in the open position of the ferromagnetic element is in direct contact with part of the building. The ferromagnetic element can contain the ledge, continuing to stretch the body and in contact with part of the building, when the element of the main valve is in the open position. The area of the body may include a protrusion, continuing to the ferromagnetic element and the contact element of the main valve element when the main valve is in the open position.

Preferably, the magnetic circuit is made and located so that the ratio of the magnetic resistance of the first section of the magnetic circuit of the magnetic resistance of the second section of magnetic circuit was greater when the core is in the second position and the element of the main valve is in the open position than when the core is in the first position and the element of the main valve is in sealing position. Preferably, the magnetic boundary resistance between the contact bridge and the core (which may be a rolling contact or a small gap) is larger when the core is in the second position. In the example, the contact bridge and the core may overlap with the larger surface area of the overlap, when the core is in the first position than when the core is in the second position. This increases the proportion of the magnetic flux directed through the element of the main valve element when the main valve is open, the retaining element of the main valve in the open position. In some embodiments, implementation, this design facilitates the opening and hold in the open position of the element of the main valve by providing an attractive force between the ferromagnetic element and the core or part of the building.

Preferably, the first portion of the magnetic circuit and the core is made so that the magnetic resistance of the first section of magnetic circuit is greater when the core is in the second position than when the first position to thereby increase the magnetic flux directed through the ferromagnetic element when the core is in the second position and the element of the main valve is in the open position.

The second section of magnetic circuit may be configured to conduct magnetic flux through the ferromagnetic element as element of the main valve is in the open position, and when the element of the main valve is in sealing is ulozhenie. The ferromagnetic element may be in contact with the core when the core is in the first position and the element of the main valve is in sealing position. In this design flow will be directed primarily through the contact bridge and the core, and not through the ferromagnetic element, facilitating the movement of the core from the first position without direct displacement of an element of the main valve.

Usually, an element of the main valve and the core coaxially. Preferably, the valve site contains elastic element is made with the possibility of a deviation of an element of the main valve from the main valve seat, and the elastic element is made with the possibility of rejection of the core before contact with the element of the main valve so that the resultant of the force deflects the main valve in sealing position.

In this aspect of the invention, the adjective "basic" in the "main valve", "element of the main valve" and related terms used to denote arbitrary and does not imply the presence of the auxiliary valve. However, in some versions of the valve unit may further comprise an auxiliary valve connected to the core, and an auxiliary valve contains an element of the auxiliary valve, made with the possibility of the movement between the sealing position and an open position, in which when the core is in the first position, the auxiliary valve is rejected in sealing position, and when the core is in the second position, the auxiliary valve is rejected in the open position.

In this case, the connection between the core and the auxiliary valve is preferably configured to provide movement of the core from the first position to the second position without corresponding movement of the element of the pilot valve, but applying forces through the connection between the core and the element of the pilot valve to cause the moving element of the pilot valve and thereby opening the pilot valve, while the core is in position between the first position and the second position along the channel. Element of the pilot valve is arranged to provide a channel for the flow of fluid between opposite sides of the element of the main valve in the open position so that in use, when there is a pressure difference on the element of the main valve, which applies force, the retaining element of the main valve in sealing contact with the main valve seat, the opening element of the auxiliary valve is allowed to balance the pressure on both sides of the element of the main valve, in order to facilitate the opening element of the main valve.

Thus, the valve unit may be valvular node according to the first aspect of the invention. Preferably, this valve provides a site in which a relatively large opening force may be applied to the element of the pilot valve and a relatively large force may be provided for holding the element of the main valve in the open position.

In the fourth aspect, the invention extends to a mechanism operating with a fluid medium containing the working chamber of cyclically changing volume, a reservoir of high pressure and manifold low pressure valve and the node according to the third aspect of the invention, which regulates the flow of fluid from manifold high pressure or manifold low pressure in the working chamber.

The mechanism operating with the fluid medium may further comprise a controller, which is made with the possibility of active management of the mentioned valve site, and possibly one or more other valves, with the dependence of the phase cycles of working chamber volume, to set the total polkovoe displacement of fluid by the working chamber.

The engine that runs on fluid, can function only of the motor or only pump. Alternatively, an engine that runs on tech is whose environment may function as a motor or pump in alternative operating modes.

Valve node may be a valve node according to the first aspect of the invention. Thus, a mechanism operating with a fluid medium, may be a mechanism operating with a fluid medium, according to the second aspect of the invention.

Description of the drawings

Example options for performing the present invention will now be illustrated with reference to the following figures, in which:

figure 1A is a partial cross - section symmetrical valve block when the valve is closed and before passing current through the electromagnet;

figure 1B is a partial section of the valve block with figures 1A after moving core from the first position to the second position responsive to a magnetic field produced by current flowing through the electromagnet;

figure 1C is a partial section of the valve block with figures 1A after moving element of the pilot valve from its seat to open the auxiliary valve;

figure 1D is a partial section of the valve block with figures 1A after moving element of the main valve from the main valve seat to open the main valve, and achieving core second position;

figure 2 - diagram showing changes in the forces acting on the rigid rod and the element of the pilot valve, depending on the position the of the core within the valve block with figure 1A (power, directed inside, have positive values);

figure 3A is a partial cross - section of an alternative symmetrical valve block when the valve is closed and before passing current through the electromagnet;

figure 3B is a partial section of the valve block with figures 3A after moving core from the first position to the second position in response to a magnetic field created by current flowing through the electromagnet;

figure 3C is a partial section of the valve block with figures 3A after moving element of the pilot valve from its valve seat to open the auxiliary valve; and

figure 3D is a partial section of the valve block with figures 3A after moving element of the main valve seat main valve to open the main valve, and achieving core second position;

figure 4 - schematic drawing of the mechanism operating with a fluid medium, comprising valve node figure 1A or figure 3A.

Detailed description of the example scenarios

With reference to figures 1A-1D, the valve node 1 according to the present invention has a ring body 2 of the valve, made of magnetically permeable material, which accommodates the phase 4 building, also made of magnetic permeable material. Ring material 30 with a high magnetic resistance separates the case of the clap is from part of the building. The electromagnet 6 is formed around part of the building, inside the valve body. The annular cage 8 Poppet valve passes from the valve body and holds the plate 10 of the main Poppet valve, which performs the function of an element of the main valve. The annular cage Poppet valve made of magnetically permeable material, and the plate of the main Poppet valve is made of a ferromagnetic material, such as steel, and thus performs the function of the ferromagnetic element. The seat 12 of the valve (performing the function of the seat of the main valve) formed beveled transition, continuing around the interior of the cells of the Poppet valve. In the closed position, the plate of the main Poppet valve meshed with the main valve seat to form a seal. Core (armature) and the main Poppet valve is made so that the outer surface 62 of the core may have come into contact with the inner surface 64 of the plates of the main Poppet valve to apply a force between the two parts, for example, when the valve is closed, before passing current through the electromagnet.

The plate of the main Poppet valve includes a hole 14 located on the Central axis of the plates of the main Poppet valve. The hole goes to dopolnitelxnogo transition 16, located inside the chamber 18 of the valve, the inside plates of the main Poppet valve, which also functions as a valve seat (seat of the auxiliary valve), which deviates element 20 of the auxiliary valve to form a seal when the valve unit is completely closed. The hole communicates with the internal chamber 22, inside the annular cage Poppet valve, through the chamber of the valve, and one or more channels 24 for the fluid. Channels for the fluid to have a sufficient cross-sectional area to avoid significant restriction of the fluid flow. Thus, when the element of the auxiliary valve is not plataue in contact with the seat of the auxiliary valve is provided with a channel for the flow of fluid between the outlet 26 of the valve and the inner chamber 22. However, this channel is closed when the control pilot valve plataue in contact with the seat of the auxiliary valve.

Inner chamber communicates via a fluid with one or more radial channels 28 that pass through the cell Poppet valve and function as inlet ports in the valve site. The radial channels are held in the internal chamber in a position that is between the position of the periphery of the plates of the main Poppet is lapane, when the main Poppet valve is open, and the position of the periphery of the plates of the main Poppet valve when the plate of the main Poppet valve plataue in contact with the saddle of the main Poppet valve. Accordingly, provided a channel for the flow of fluid directly from the inlet hole to the outlet hole when the main Poppet valve is open, regardless of open whether the auxiliary valve. However, don't provide a channel for the flow of fluid directly from the inlet hole to the outlet hole, around the periphery of the plates of the main Poppet valve when the main Poppet valve is closed.

The magnetic circuit is formed from part of the ring of material 30 with a high magnetic resistance, which is located around the periphery of the area of the housing. The magnetic circuit also includes a contact bridge 32, which passes radially outward from the valve body and is in contact with the core 34, which is arranged to move from a first position, shown in figure 1A, in a second position, shown in figure 1B. The core has a peripheral flange 36, which is thicker than the Central section of the core and is in movable contact with the contact bridge and are made so as to remain in contact with (or alternative about the stay very close to) the contact bridge, while the core is in any position between the first position and the second position. Contact bridge includes one or more through holes 38 through which fluid can flow to allow the core to move between first and second positions. The annular valve body, the area of the housing and the contact bridge together form the first section of the magnetic circuit. The second section of magnetic circuit formed by the valve housing, section housing, and an annular cage Poppet valve, which is also made of magnetic permeable material, such as steel, and is in contact with the contact bridge.

The core has a Central opening 40 therein. Hard rod 42 passes through the Central hole of the core and the camera inside plates of the main Poppet valve. Hard rod has a first end which forms the element 20 of the auxiliary valve, and an opposite second end 44 located within the recess 46, within the area of the valve body.

Valve node contains three springs. The main spring 48 (performing the function of the main elastic element) passes around the hard shaft from passage 50 within the recess section of the housing to the inner surface 52 of the core and is in a compressed condition throughout. Charging the spring 54 (polnaya function auxiliary elastic element) passes from the inner surface of the core, around the hard rod, and is located on the peripheral flange 56 on the second end of the rigid rod. The peripheral flange has an outer surface 66, which may act on the inner surface of the core so that the inner surface of the core and the outer surface of the peripheral flange is formed so distance limiting mechanism. Guide spring 58 (performing the function of the third elastic element) passes between passing radially outward peripheral flange 60 located near the first end of the rigid rod, and passing radially inward flange around the inner chamber inside the plates of the main Poppet valve. Guide the spring is relatively weak when the valve site is in the fully closed position, as shown in figure 1A, but is compressed when the auxiliary valve is open and the main valve is not opened, as shown in figure 1C.

The element of the main valve element of the pilot valve, rigid rod and each of the main charger and the guide springs coaxially. The main spring is concentric with and extends around the charging springs.

In the application example, the valve site is located within a mechanism operating with a fluid medium, with the inlet connected to the collector of a high D. the effect, and with outlet attached to the working chamber of cyclically changing volume. The electromagnet is connected to the current source, which is configured to enable the controller to allow the transmission of current through the electromagnet when it is necessary.

When current is not supplied to the electromagnet, the valve is in the closed position, shown in figure 1A. The main spring provides a deflecting force to the outside, and thus the core is rejected in the outer direction, the pressing plate main Poppet valve in sealing contact with the main valve seat by contact of the outer surface 62 and the inner surface 64. Charging the spring is weakened and thus makes only a little effort on your hard rod in the inner direction (i.e. upward figure 1A). Guide spring applies oppositely directed and are usually more force on a hard rod in the outer direction. For example, charging the spring may have a preload of 10 N and a guide spring may be preloaded 15 N. Thus, the total force on a hard rod due to tightness inside the charging of the spring and the spring guide rejects rigid rod, and therefore, the element of the pilot valve, outside, in sealing contact with the saddle VSP the service valve. The main valve and auxiliary valve is also held in closed positions by the pressure difference between the inner chamber valve block and bleed hole. Accordingly, in the closed position, shown in figure 1A, the valve site is closed and there is no channel for the flow of fluid from valve high pressure through the inlet to the outlet and into the working chamber.

When current is supplied to the electromagnet, a magnetic circuit is formed, directing magnetic flux through the core. The magnet applies a magnetic force to the core and the current through the electromagnet is selected so that the force acting on the core, was sufficient to move the core from the first position to the second position. In normal use, the attracting force is insufficient to move the core, if the core was rigidly connected to the element of the pilot valve. However, according to the invention, the elastic connections allow the core to move without first moving element of the pilot valve. Therefore, it is possible to avoid unnecessary power consumption by using a weaker initial attracting force than was required previously. As the core moves from the first position to the second position, the gap between the I core and part of the building is reduced, and the force on the core is increased.

Figure 2 is a graph showing changes of the respective forces during movement of the core along the channel from the first position 100 in the second position 102, which is closer to the magnet than the first position. The channel continues directly from the first position to the second position, in a straight line to the Central axis of the toroidal electromagnet. The force of the spring guide 104 (which is valid in the internal direction on the plate of the main Poppet valve and the outer (negative part of the graph) direction on a hard rod and built-in element of the pilot valve) when the core begins to move, since the main valve and auxiliary valve remain closed, held in place deflecting force and pressure difference. The force of the charging spring 106 (which is valid in the outer direction of the core and inner (positive part of the graph) direction on a hard rod and, therefore, the element of the pilot valve) increases monotonically when the core begins to move, without moving rigid rod, due to compression of the charging spring. The force of the main spring 108 (which is valid in the outer direction of the core)also increases monotonically, as the core lane is meshaetsia from the first position to the second position. The pressure difference between the inlet and the outlet valve of the node remains constant, while the auxiliary valve remains closed and the constant force of 110 operates in the outer direction on the element of the pilot valve (and thus the hard core, the negative part of the graph).

The total resultant force on the auxiliary valve is shown as line 112 and shows that in the first position 100, it is much larger than the total force 114, which may be applied by the electromagnet in the opposite (inside opening) direction. However, the total power 114 more than the total force on the core from the opening 106 of efforts charging the springs 54 and guide efforts 104 of the spring guide 58, allowing the core to move from the first position 100. As the core moves from the first position to the open position, an opening force on the core, the applied charging spring, linearly increasing, but the total force which the electromagnet applies to the core, increases proportionally to the second order and exceeds ravnodeystvuiushchey force required to open the auxiliary element of the valve, when the core reaches the position of the opening 101 between the first and second positions. Position opening will change the sterile depending on the pressure difference between the inlet and the outlet. The configuration of the valve block when the core reaches its open position, shown in figure 1B.

In the example of figure 2 the total force created on the hard rod combination charger and guide springs, is not large enough by itself to move the hard rod against the forces of 110 fluid, which arise due to the differential pressure on the element of the main valve. It is possible that at small pressure difference to the total power will be great enough and hard rod moves inward, moving the element of the pilot valve from sealing contact with the seat of the auxiliary valve and opening the auxiliary valve, as shown in figure 1C. However, in applications with a sufficiently large pressure difference the inner surface 52 of the core in contact with the outer surface 66 of the peripheral flange 26 at the point 101 of the opening. Thus, the greatest distance between the core element, and the auxiliary valve is limited, and there is a sharp jump 116 opening efforts 106, which is attached to the rigid rod core. Force acting on a rigid rod, now it is enough to move the hard rod inside, moving the element of the pilot valve from sealing contact with the seat of the auxiliary valve and opening the auxiliary valve, ka is shown in figure 1C. It is seen that the force applied charging spring together with contacting the inner and outer surfaces of the core and the peripheral flange, respectively, much larger than the core could provide in the open position 100. However, since the core has moved almost to the closed position in the example shown in figure 2, have far greater opening force than would have occurred otherwise.

As soon as the auxiliary valve is opened, it provides a channel of relatively small cross-section for the flow of fluid from the inner chamber valve block, through the seat of the auxiliary valve and the Central hole in the plate of the main Poppet valve to the outlet. The outlet is connected with the working chamber, which is actually a closed volume, because the opening is so fast that any change in the volume of the working chamber is negligible. Accordingly, the fluid of high pressure is supplied to the working chamber through the auxiliary valve, the pressure in the intake hole and the exhaust hole begins to be balanced out due to the increase in pressure at the outlet. The total force required to move the hard core begins to fall (118) as decreases the differential the pressure. The effort inside charger spring begins to fall (116) as the hard rod begins to move relative to the plates of the main Poppet valve, and the force within the spring guide begins to increase (120) as the hard rod moves relative to the plates of the main Poppet valve, thereby reducing the length of the spring guide. Hard rod set at the position where the force from the spring guide and the force from the charging springs are equal.

As soon as the auxiliary valve is open, the pressure difference on the element of the main Poppet valve decreases rapidly, and the element of the main valve can be lifted from the main valve seat and biased in the position shown in Figure 1D, by power transmitted through the rigid rod and the guide spring. Therefore, fluid can flow freely from the inlet to the outlet. The main valve will normally remain open when the valve site is in the open position, but this is not mandatory. The main valve will be rejected to the opening, because the total force applied guide spring, now exceeds the total force applied charging spring, so long as the core is held in the second position, thereby eliminating stress is the main spring, which otherwise would act to close the main valve. The main valve closes again due to the action of the main spring and the auxiliary valve closes again due to the higher forces of the tension guide spring compared with the charging spring, when the current through the electromagnet, will turn off. Since the spring acts directly on the core, which rests directly on the element of the main valve, the plate of the main Poppet valve begins to move toward the main valve seat, as soon as the current through the electromagnet, will turn off. Because it's attached to moving parallel to the auxiliary valve guide spring, which opens the main valve, compressed slightly during the closure, ensuring that the full force of the main spring is available to expedite the closing.

In the shown construction of the valve formed by the magnetic circuit containing the first area of the magnetic circuit, which continues through the contact bridge and the core, and the second section of magnetic circuit, which continues through the cell Poppet valve and the plate of the main Poppet valve. The first and second magnetic sections are connected in parallel.

When the valve site is in position, pakatan the m in figure 1A, and the first current is supplied to the electromagnet, the magnetic flux is conducted mainly through the annular valve body, the contact bridge and the core and through the gap between the core and part of the building. The magnetic flux density through the cell Poppet valve and the plate of the main Poppet valve is relatively small, since the magnetic resistance of the first section of the magnetic circuit is substantially less than the magnetic resistance of the second section of magnetic circuit.

The core is attracted to the portion of the body and begins to move to the part of the building. A peripheral flange around the core is set so that the contact bridge is almost in contact with the core over the entire area of the cross section of the contact bridge, not only when the core is in the first position, but during the first part of the moving core. The core is moved from the plates of the main Poppet valve, which may not initially be moved, and the magnetic resistance of the second leg of the magnetic circuit increases even more.

Once the core reaches the second position, after the auxiliary valve began to open, the core is in contact with part of the building and held in place near the site of the body, while the current continues to flow through the electromagnet. However, the peripheral flange of the races is halogen so, to the second position, the overlap between the peripheral edge and the contact bridge was significantly less than the entire cross-sectional area of the contact bridge. This increases the magnetic resistance of the connection between the contact bridge and the core.

After a short period of time element of the pilot valve is in contact with the core, which itself remains in contact with part of the building. While the current continues to be passed through the electromagnet, the magnetic circuit is closed through the electromagnet, the cell Poppet valve, a plate of the main Poppet valve and the core. Thus, in the open position of the plate main Poppet valve is magnetically attracted to the core and is subjected to a force that resists Bernoulli forces, which act on the plate of the main Poppet valve, caused by the rapid flow of fluid from the inlet, past the periphery of the plates of the main Poppet valve in the outlet and then into the working chamber, the pressure gradient. Thus, the plate of the main Poppet valve is held open by a magnetic circuit.

The simplified mechanism of the increased magnetic resistance connection between the contact bridge and the core, which directs the magnetic flux through the cell Terelj the addition valve and the plate of the main Poppet valve (performing the function of the second section of magnetic circuit). Despite the fact that the total resistance of the channel via the contact bridge and the core area on the body may be lower when the core is in the second position than in the first position, because the core is in direct contact with part of the building, the ratio of the magnetic resistance of the channel via the contact bridge and the core to the area of the body to magnetic resistance of the channel through the plate of the main Poppet valve is greater when the core is in the second position, and the plate of the main Poppet valve is held in open position. Thus, a large part of the magnetic flux is directed through the plate of the main Poppet valve than would have occurred otherwise, increasing the available holding strength.

As soon as the current to the electromagnet is switched off, the magnetic field weakens, and the plate of the main Poppet valve is moved toward the outside to sealing contact with the main valve seat.

In alternative embodiments, the execution, the plate of the main Poppet valve can directly contact area of the housing in the open position. The plate of the main Poppet valve or part of the building may contain a tab to facilitate this direct contact.

In alternative embodiments, in the execution, the corresponding magnetic circuit can be used to open the valve element nodes, which do not include auxiliary valves.

Although the plate of the main Poppet valve is fully made of a ferromagnetic material in this variant example of implementation, the specialist in the art it is clear that the element of the main valve may contain ferromagnetic region and the non-ferromagnetic region.

Figure 3 is a schematic drawing of the valve block, similar to the valve site, shown in figure 1, but with additional features for opening the main valve 10 using the direct force of the electromagnet 4 and the core 34. Numeric positions correspond to the positions of figures 1A-1D, with the addition of the opening of the cone 68 of the main valve, mounted in a radial groove 70 of the core and scalawags with an opening protrusion 72 of the main valve. When opened, the valve of figure 4 is identical to the valve of figure 1, up to phase C. phase C of the opening cone of the main valve engages with the opening protrusion of the main valve, preventing the achievement of the core 34 of the profiled surface of the body 4 of the electromagnet and applying force of the electromagnet directly to the opening of the main valve. As soon as the pressure on the main valve snige the Xia, due to flow through the auxiliary valve 16, the main valve opens (figure 3D). Thus the speed of opening of the main valve can be increased, since the main valve can be opened by using a greater force than can be applied using only springs 54 and 58.

Valve design disclosed here has significant advantages over the valve design in GB 2,430,246. The core is able to move close to the electromagnet before the opening of the auxiliary valve, to ensure the greatest opening force on the auxiliary valve and the auxiliary valve can be the same move as before, when he started his motion, and, therefore, exposed to the reduced force of the pressure fluid as the pressure in the working chamber is aligned, it is completely open by the action of the compressed auxiliary springs. Also, the electromagnet is able to exert the attracting magnetic force to the main valve to hold it in the open position, applying it directly and not only through the action of the spring, which is stretched and, therefore, can provide only weak holding power. These advantages mean that may be provided a valve which consumes less power and can attributesarray large pressure difference.

Figure 4 is a schematic drawing of a mechanism operating with a fluid medium, indicated generally at 200, includes valve shown node 202, as valve high pressure, which regulates the flow of hydraulic fluid between the collector 204 of high pressure and the working chamber 206. The working chamber is limited inner space of the cylinder 208 and the piston 210, which is mechanically connected with the rotation of the crankshaft 212 suitable mechanical connection 214 and which performs a reciprocating movement inside the cylinder to cyclically vary the volume of the working chamber. The valve 216 low pressure regulates the flow of fluid between the collector 218 of low pressure and the working chamber. An example of a mechanism operating with a fluid medium, includes many of the working chambers, mechanically connected with one rotation of the crankshaft, with the appropriate phase difference. The sensor 220 position and speed of the shaft determines the instantaneous angular position and speed of rotation of the shaft and transmits the signals of the position and speed of the shaft on the controller 222 that allows the controller to determine the instantaneous phase of the cycles of each working chamber. The controller is typically a microprocessor or microcontroller that performs when using a recorded program. Clap the n low pressure is made with the possibility of e-inclusion, and the opening and/or closing of valves high and low pressure is actively controlled by the controller.

An example of a mechanism operating with a fluid medium, configured to perform the functions of either pump or motor in alternative operating modes. When operation of the pump, fluid low pressure is taken from the collector of low pressure and issued through a high pressure valve in the manifold pressure. The shaft power thus converted into the energy of the fluid. When operation of the pump, the fluid of high pressure is taken from the collector of a high pressure and is released through the low pressure valve in the manifold of low pressure. The energy of the fluid thus is converted into shaft power.

The controller regulates the opening and/or closing of valves high and low pressure to define moving fluid through each working chamber, putilovo, with the dependence of the phase cycles of working chamber volume, to control the total flow of fluid through the mechanism. Thus, a mechanism operating with a fluid medium, operates according to the principles disclosed in EP 0361927, EP 0494236 and EP 1537333, the contents of which are incorporated here by reference.

Valve node according to the present invention is of particular advantage in connection with the mechanisms of the servant of the melt with the fluid medium, this type, because it can quickly be opened (a few milliseconds) against the pressure difference, without excessive energy consumption. Moreover, since the valve unit may be held in open position by the design of the magnetic circuit, a significant amount of fluid can flow through the valve site for a short period of time, without passion to the closure of the valve block. The valve Assembly can be useful as a valve both low and high pressure.

Additional modifications and changes may be made within the scope of the invention disclosed here.

1. Valve unit for regulating the supply of fluid from the reservoir to the high pressure in the working chamber of the mechanism operating with a fluid medium, and valve node contains the main valve, auxiliary valve, solenoid and core, and the main valve contains an element of the main valve with landing on the surface and the main valve seat, and an auxiliary valve element contains an auxiliary valve arranged to move between a sealing position and an open position in which is provided a channel through an auxiliary valve for the flow of fluid between opposite sides of the element of the main valve to reduce the pressure difference at which lemente main valve, moreover, the core is connected to the element of the pilot valve and configured to move along the channel, passing between the first position and the second position and the second position is closer to the magnet than the first position, whereby in the first position element of the main valve refused to seat the main valve and auxiliary valve rejected in the sealing position and the second position element of the main valve rejected from the seat of the main valve and auxiliary valve rejected in the open position, characterized in that the connection between the core element, and the auxiliary valve is arranged to provide movement of the core from the first position to the second position without the corresponding moving element of the pilot valve, but applying forces through the connection between the core and the element of the pilot valve to cause the moving element of the pilot valve and thereby opening the pilot valve, while the core is in position between the first position and the second position along the channel.

2. Valve node according to claim 1, in which the connection between the core and the element of the pilot valve includes an auxiliary elastic element, which is configured to batte the simulation of elastic energy as as the core moves along the channel from the first position to the second position.

3. Valve node according to claim 2, in which at least one elastic element, including auxiliary elastic element, together exert a deflecting force to the core, to reject the core in the first position, and mentioned deflecting force increases as the core is moved from the first position to the second position, in which the increase in the deflecting force with distance is less than the increase in the force applied by the electromagnet to the core during use, due to the reduced distance between the magnet and the core, at least when the core is located between the first position and a second position in which the element of the pilot valve begins to move.

4. Valve node according to any one of the preceding paragraphs, in which the said connection includes a limiting mechanism that is configured to engage to limit the maximum distance between the core and the sealing part of the pilot valve and, thus, binding of moving core moves the pilot valve along the stretch of the canal between the first position and the second position.

5. Valve node according to claim 4, in which the core is made with prob is the possibility of first engagement with the auxiliary valve and then with the element of the main valve as as the core moves from the first position to the second position during valve opening to extend to the opening of the auxiliary valve, before moving element of the main valve and then to raise the element of the main valve seat main valve.

6. Valve node according to claim 1, in which the valve site contains essentially rigid rod which extends through the hole in the core, which is rigidly connected to the element of the pilot valve on the first side of the core, located in the working chamber during use, and is connected to the core of the elastic element on the opposite second side of the core so that the core continues around and moves along an essentially rigid rod when using, as the core moves along the channel from the first position, and essentially rigid rod further comprises a formation on the second side of the core, which engages with the core in the above-mentioned position between the first position and the second position, so that the core is pulled to the opening of the auxiliary valve in said position between the first position and the second position.

7. Valve node according to claim 1, additionally containing the main elastic element, which deflects the element of the main valve to seal the its contact with the main valve seat.

8. Valve node according to claim 7, in which the main elastic element rejects the core in the first position, and the core engages with the element of the main valve in the first position, so that in the first position of the main elastic element rejected the element of the main valve to sealing contact with the main valve seat.

9. Valve node according to claim 1, additionally containing a third elastic element, which has a first end that is attached to the element of the auxiliary valve, and a second end that is attached to the element of the main valve.

10. Valve node according to claim 9, in which the element of the main valve is in sealing contact with the seat of the main valve and the auxiliary valve is closed, the third elastic element rejects the auxiliary valve is in the closed position.

11. Valve node according to claim 9 or 10, in which, when the element of the pilot valve is in the open position, before moving element of the main valve, the third elastic element provides a deflecting force to reject the element of the main valve from the main valve seat.

12. Valve node according to claim 1, in which the element of the pilot valve is a valve with landing on the surface, and the auxiliary valve further comprises a seat auxiliary valve for sealing interaction is with the element of the pilot valve.

13. Valve node according to claim 1, in which the auxiliary valve continues through the element of the main valve to allow for the fluid through the element of the main valve when the auxiliary valve is in the open position to reduce the pressure difference between opposite sides of the element of the main valve.

14. Valve node according to claim 1, in which, when the core is in the second position, the auxiliary valve is closed or can be closed.

15. A mechanism operating with a fluid medium containing the working chamber of cyclically changing volume, a reservoir of high pressure and manifold low pressure valve and the node according to any one of the preceding paragraphs, which regulates the flow of fluid from manifold high pressure or manifold low pressure in the working chamber.

16. A mechanism operating with a fluid medium of clause 15, further containing a controller, which is made with the possibility of active management of the mentioned valve site, and optionally one or more other valves with the dependence of the phase cycles of working chamber volume, to determine the total displacement of fluid by the working chamber on polloway basis.

17. A mechanism operating with a fluid medium of clause 15 or 16, in which the pressure inside the working chamber is balanced with the pressure is receiving inside the corresponding collector through the auxiliary valve when using, when the auxiliary valve is in the open position to reduce the pressure difference on the element of the main valve and allow the opening of the main valve.



 

Same patents:

FIELD: machine building.

SUBSTANCE: valve has the possibility of being attached to fuel tubes and includes movable head in valve body. Head is turned about axis in valve body and rigidly attached to the first end of driven shaft brought into rotation by means of electric drive mechanism. Head includes a through hole with axis and has two stable positions on two ends of head rotation zone. Axis of hole is oriented so that fuel flow via tubes is available in the first open position of the head. Axis of hole is oriented so that fuel flow via tubes is prohibited in the second closed position of the head. Valve includes torque moment formation devices and position determination devices. Torque moment formation devices are rigidly attached to head and form torque moment on drive shaft, which changes depending on head position in valve body. Position determination devices supply signals characterising the positions of the above drive shaft. Valve operation diagnostics device and method are described.

EFFECT: higher reliability of device.

10 cl, 6 dwg

FIELD: machine building.

SUBSTANCE: drive two-stage multi-plane-pinion planetary gearbox comprises input shaft 4, support central wheel 11, two-support planet carrier 6, plane pinions in number corresponding to odd number of said pinions in every stage and arranged in pairs on said carrier 6, and two-support output shaft 19 with output central wheel 12 fitted thereon. Axes of motor rotor 7, input shaft 4, carrier 6 and output shaft 19 are arranged inter-aligned and aligned with shutoff valve spindle travel axis. Stator covers rotor and is secured on the flange of housing 1. Input shaft, pinion carrier and reduction gear output shaft are hollow components. Sums of central wheel teeth in both planetary stages are equal and selected from the range of 200…400. Numbers of second stage central wheels are selected from parameters series.

EFFECT: higher reliability and efficiency, decreased sizes.

12 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: multi-way valve (30) includes body (31), head (32) from which outer end (33) of rotary stem (34) of valve projects, and actuator (1). Head (32) of valve has connection means (35) for movable connection of actuator (1) to housing (31) of valve and outer end (33) of valve stem (34), which has attachment surfaces (36), for fixed interaction with the first end (11) of connection element (10) the other end (12) of which interacts in rigid manner with rotary control shaft (2) of actuator (1). Connection element (10) has the possibility of being reversed. Both ends (11; 12) of connection element (10) are provided with central hole (13) and toothed rim (15, 16). One hole (13) is provided with possibility of fixed interaction with attachment surfaces on external end of valve stem of the first type. The other central hole (14) is provided with possibility of fixed interaction with attachment surfaces (36) on external end (33) of valve stem (34) of the second type. Each toothed rim (15, 16) envelopes the corresponding hole (13, 14), and when it faces the opposite side from valve head (32), it interacts with gear teeth (3) in rigid manner. Those teeth are made on mating end of actuator shaft (2) of one and the same type. There is the second invention object.

EFFECT: enlarging functional capabilities owing to using one and the same actuator and one and the same connection element for various types of rotary valve stems.

12 cl, 2 dwg

FIELD: fire fighting systems.

SUBSTANCE: invention refers to protection drive device with emergency protection circuit and can be used in firefighting and monitoring systems used in the sphere of air conditioning, heating and ventilation. Protection drive device (10) with circuit (12) of emergency protection installs damper or valve into the set position ensuring safety for regulation of volumetric gas or flowing medium flow. The important parts of the device (10) are the executing mechanism (14) with controlled electric motor (28), unit (20) of capacity storage, energy converter (22) with energy module and power unit (18). During normal operation electric current in the energy module of converter (22) is converted into lower voltage and the charge is stored in the unit (20) comprising at least one double-layer condenser. In case of voltage decrease lower the set value or in case of electric supply failure the accumulated electric charge is converted with the same energy module into higher voltage, and as a result, the electric motor (28) works until the set position ensuring safety is reached.

EFFECT: simplification and improvement of emergency protection circuit.

25 cl, 9 dwg

FIELD: electricity.

SUBSTANCE: electromechanical drive includes electric motor, stator, rollers and output stock. Stator encloses hollow rotor. Rollers are equipped with external thread and arranged in cavity of rotor in threaded sleeve in circumferential direction. Axes of rollers are parallel to rotor axis. Screw is coaxially arranged inside rotor. Screw has external thread. Thread of screw interacts with thread of rollers. Thread of rollers interacts with internal thread of sleeve. Sleeve is rigidly attached to one end of output stock. The latter is installed so that it is protected against being turned. One screw end is rigidly attached to rotor. The other end of screw is arranged in cavity of output stock.

EFFECT: higher reliability of electromechanical drive.

9 cl, 3 dwg

FIELD: machine building.

SUBSTANCE: invention is designed for application of device preventing rotation of servo-motor mounted on driven shaft of rotary shut-off gate of gas-transporting pipe. In particular, this gate can be positioned in a structure of a heating pipe, ventilation, air conditioning or smoke pipe. Device preventing rotation of servo-motor (10) is set with geometric lock and/or power lock on projecting driven shaft (22) of rotary shut-off gate (62) of gas-transporting pipe (34). At least one shifting lengthwise bracket (36) maintaining servo-motor (10) is positioned at adjusted axial distance (a) from driven shaft (22).

EFFECT: simplified assembly and operation of device.

10 cl, 10 dwg

FIELD: transport.

SUBSTANCE: valving drive comprises reversible motor and extending spindle. The latter is coupled with valve gate. Reduction gear is arranged between motor and extending spindle. Reduction gear consists of housing, drive cam shaft, bevel pinion, cone coupling, sliding nut and hollow output shaft. The latter is arranged aligned with extending spindle. Helical pinion is a two-rim pinion. Said helical pinion is jointed with housing and engaged with two-rim pinion rim. Cone coupling is jointed with hollow output shaft and engaged with two-rim pinion rim. Sliding nut is fitted at hollow shaft lower part.

EFFECT: motor reduced rpm for lifting valve gate at drive lower weight and smaller sizes.

1 dwg

FIELD: machine building.

SUBSTANCE: drive of valve consists of case, valve rod, spring and of driving devices. The rod is connected to a gate element. The gate element travels between the first and the second positions. The spring shifts the gate element from the said first position into the said second position. The first driving devices are designed for tension of the spring and for retaining the spring in a compressed state. The second driving devices are designed for transfer of the gate element from the first position into the second position. The second driving devices include a transmission with a roller screw. Also the second driving devices operate independently from the first driving devices. Releasing devices free the spring to return the gate element into the second position. There is disclosed the version of design of the valve device for this drive.

EFFECT: increased speed of response for valve opening in emergency cases.

7 cl, 10 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to field of pipeline valves, particularly to structures of quick-acting motor valves with axisymmetric seats and rotary plugs, and is provided for close control of flows of arbitrary flowing fluids on the basis of liquids and gases, locking and unlocking of vacuum pipelines. Motor valve with rotary plug contains casing 1 with inlet 2 and outlet 3 branches, axisymmetric seat 4, rotary plug 5, rotary drive on the basis of piezoelectric motor 7. Seat 4 is rigidly fixed inside the casing 1. Rotary plug 5 is put into seat 4 and allows guide bar 6. Motor 7 allows annular piezoelectric oscillator 8 radially directed vertical acoustic waves. Oscillator 8 is rigidly fixed with casing 1 of valve and outfitted by facilities for connection to pulsed current source and control system. Flexible annulus 9 is acoustic hermetically joined to piezoelectric oscillator 8. Annulus 9 is outfitted by flexible clack tappet 10. Rotor 11 is located with steady clearance relative to piezoelectric oscillator. Rotor 11 is introduced into frictional contact with flexible clack tappet 10. Rotor 11 is interlocked with guide bar 6 of rotary plug 5.

EFFECT: rising of valve performance and rising of precision of angular positioning of plug relative to seat.

7 cl, 2 dwg

FIELD: mechanics.

SUBSTANCE: proposed mechanism comprises housing, motor, spindle, motor base, cam-type torque conversion mechanism including cam and pushrod interacting with valve stem arranged to move axially, and electric switch. Note that the proposed mechanism additionally incorporates and outer cam wheel. Note also that the fixed cam comprises base plate attached to the motor base and accommodates, at least, one lifting/downing profile. The said pushrod is fitted at greater distance from the motor than aforesaid fixed cam and represents a rotary disk with appropriate actuating and guiding appliances. The said outer can wheel is coupled with the spindle to transmit torque to the pushrod and to interact with electric switch.

EFFECT: simple design, ease of manufacture.

8 cl, 6 dwg

Valve drive // 2262024

FIELD: closing and opening large valves.

SUBSTANCE: proposed drive is provided with engine which acts on threaded rod by means of transfer mechanism. Nut of transfer mechanism is screwed on threaded rod. Transfer mechanism is provided with clutch consisting of two members which are thrown into engagement by means of toothed rim of one member and toothed rim of other member. One member is movable in axial direction during rotation of said member relative to each other. Shifting member is connected with switch.

EFFECT: automatic adjustment of valve to different valves.

14 cl, 5 dwg

Actuating mechanism // 2268431

FIELD: the invention refers to armature construction namely to actuating mechanisms for pipeline armature.

SUBSTANCE: the actuating mechanism has a flange 1 with an opening for installation on the armature, a located under it a bridge 5 with a co-axial opening and an arrangement for fastening of the rod of the armature. The actuating mechanism has also a drive interacting with one of the two cog-wheels located diametrically to the opening of the flange 1 and placed in bearings. The cog-wheels are connected with the bridge 5 through screw mechanisms for its reciprocal movement relatively to the flange. The connection between the cog-wheels is fulfilled through a hollow cog-wheel covering the opening of the flange 1 and having ledges. The hollow cog-wheel contacts with the rollers installed at its both sides.

EFFECT: high meanings of mechanical transmission are achieved.

4 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: invention deals with methods of control over power-pressurised switch gear operating under time-varying thermal conditions within the framework of multi-phased technological processes and is aimed to provide for remote control of vacuum valves. The proposed remote control method envisages utilisation of multiple shutting-off device position stops and valve pressurisation effort amount restrictors. The position stops are remotely connected and the shutting-off device required position stops and pressurisation effort amount restrictors are operated.

EFFECT: enhanced valve pressurisation reliability, facilitated control over the shut off medium flow and reduced redundant deformation of the sealant element.

2 cl, 1 dwg

FIELD: mechanics.

SUBSTANCE: proposed mechanism comprises housing, motor, spindle, motor base, cam-type torque conversion mechanism including cam and pushrod interacting with valve stem arranged to move axially, and electric switch. Note that the proposed mechanism additionally incorporates and outer cam wheel. Note also that the fixed cam comprises base plate attached to the motor base and accommodates, at least, one lifting/downing profile. The said pushrod is fitted at greater distance from the motor than aforesaid fixed cam and represents a rotary disk with appropriate actuating and guiding appliances. The said outer can wheel is coupled with the spindle to transmit torque to the pushrod and to interact with electric switch.

EFFECT: simple design, ease of manufacture.

8 cl, 6 dwg

FIELD: mechanical engineering.

SUBSTANCE: invention relates to field of pipeline valves, particularly to structures of quick-acting motor valves with axisymmetric seats and rotary plugs, and is provided for close control of flows of arbitrary flowing fluids on the basis of liquids and gases, locking and unlocking of vacuum pipelines. Motor valve with rotary plug contains casing 1 with inlet 2 and outlet 3 branches, axisymmetric seat 4, rotary plug 5, rotary drive on the basis of piezoelectric motor 7. Seat 4 is rigidly fixed inside the casing 1. Rotary plug 5 is put into seat 4 and allows guide bar 6. Motor 7 allows annular piezoelectric oscillator 8 radially directed vertical acoustic waves. Oscillator 8 is rigidly fixed with casing 1 of valve and outfitted by facilities for connection to pulsed current source and control system. Flexible annulus 9 is acoustic hermetically joined to piezoelectric oscillator 8. Annulus 9 is outfitted by flexible clack tappet 10. Rotor 11 is located with steady clearance relative to piezoelectric oscillator. Rotor 11 is introduced into frictional contact with flexible clack tappet 10. Rotor 11 is interlocked with guide bar 6 of rotary plug 5.

EFFECT: rising of valve performance and rising of precision of angular positioning of plug relative to seat.

7 cl, 2 dwg

FIELD: machine building.

SUBSTANCE: drive of valve consists of case, valve rod, spring and of driving devices. The rod is connected to a gate element. The gate element travels between the first and the second positions. The spring shifts the gate element from the said first position into the said second position. The first driving devices are designed for tension of the spring and for retaining the spring in a compressed state. The second driving devices are designed for transfer of the gate element from the first position into the second position. The second driving devices include a transmission with a roller screw. Also the second driving devices operate independently from the first driving devices. Releasing devices free the spring to return the gate element into the second position. There is disclosed the version of design of the valve device for this drive.

EFFECT: increased speed of response for valve opening in emergency cases.

7 cl, 10 dwg

FIELD: transport.

SUBSTANCE: valving drive comprises reversible motor and extending spindle. The latter is coupled with valve gate. Reduction gear is arranged between motor and extending spindle. Reduction gear consists of housing, drive cam shaft, bevel pinion, cone coupling, sliding nut and hollow output shaft. The latter is arranged aligned with extending spindle. Helical pinion is a two-rim pinion. Said helical pinion is jointed with housing and engaged with two-rim pinion rim. Cone coupling is jointed with hollow output shaft and engaged with two-rim pinion rim. Sliding nut is fitted at hollow shaft lower part.

EFFECT: motor reduced rpm for lifting valve gate at drive lower weight and smaller sizes.

1 dwg

FIELD: machine building.

SUBSTANCE: invention is designed for application of device preventing rotation of servo-motor mounted on driven shaft of rotary shut-off gate of gas-transporting pipe. In particular, this gate can be positioned in a structure of a heating pipe, ventilation, air conditioning or smoke pipe. Device preventing rotation of servo-motor (10) is set with geometric lock and/or power lock on projecting driven shaft (22) of rotary shut-off gate (62) of gas-transporting pipe (34). At least one shifting lengthwise bracket (36) maintaining servo-motor (10) is positioned at adjusted axial distance (a) from driven shaft (22).

EFFECT: simplified assembly and operation of device.

10 cl, 10 dwg

FIELD: electricity.

SUBSTANCE: electromechanical drive includes electric motor, stator, rollers and output stock. Stator encloses hollow rotor. Rollers are equipped with external thread and arranged in cavity of rotor in threaded sleeve in circumferential direction. Axes of rollers are parallel to rotor axis. Screw is coaxially arranged inside rotor. Screw has external thread. Thread of screw interacts with thread of rollers. Thread of rollers interacts with internal thread of sleeve. Sleeve is rigidly attached to one end of output stock. The latter is installed so that it is protected against being turned. One screw end is rigidly attached to rotor. The other end of screw is arranged in cavity of output stock.

EFFECT: higher reliability of electromechanical drive.

9 cl, 3 dwg

FIELD: fire fighting systems.

SUBSTANCE: invention refers to protection drive device with emergency protection circuit and can be used in firefighting and monitoring systems used in the sphere of air conditioning, heating and ventilation. Protection drive device (10) with circuit (12) of emergency protection installs damper or valve into the set position ensuring safety for regulation of volumetric gas or flowing medium flow. The important parts of the device (10) are the executing mechanism (14) with controlled electric motor (28), unit (20) of capacity storage, energy converter (22) with energy module and power unit (18). During normal operation electric current in the energy module of converter (22) is converted into lower voltage and the charge is stored in the unit (20) comprising at least one double-layer condenser. In case of voltage decrease lower the set value or in case of electric supply failure the accumulated electric charge is converted with the same energy module into higher voltage, and as a result, the electric motor (28) works until the set position ensuring safety is reached.

EFFECT: simplification and improvement of emergency protection circuit.

25 cl, 9 dwg

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