Fan

FIELD: heating.

SUBSTANCE: invention refers to fan (10) for air jet generation. The fan includes nozzle (14) mounted on a base. The base includes external case (16), noise absorbing element inside the external case (16), impeller case (64) inside the external case (16) featuring hole (70) for air inlet and hole for air outlet, impeller (52) in the impeller case, and motor (56) rotating the impeller against axis to generate air flow through impeller case. The nozzle includes external channel (86) for air flow from air outlet hole in the impeller case, and outlet section (26) through which air flow exits the fan, while noise absorbing element is positioned under air inlet hole (70) in the impeller case (64) and runs from air inlet hole along the axis at 5 to 60 mm distance.

EFFECT: bladeless low-noise fan.

15 cl, 3 dwg

 

The invention relates to a fan. In particular, the invention relates to a household fan, such as a table fan is designed to circulate air to create air flow in the room, in the office or other household areas.

Ordinary household fan typically includes a set of vanes or blades mounted for rotation about the axis, and a driving device for rotating set of blades and, thus, create an air flow. The movement and circulation of the air flow generates a "wind chill" or a gentle breeze, and as a result, the user feels a cooling effect, as the heat is dissipated through convection and evaporation.

The size and shape of such fans may be different. For example, the diameter of ceiling fans can be at least 1 m, and they can be hung from the ceiling to create a downward air flow, cooling the room. On the other hand, the diameter of desktop fans can often be about 30 cm, and typically, these fans are made in the form of freestanding and portable devices. Fans of other types can be attached to the floor or wall. Such fans, as fans, are described in documents USD 103476 and US 1767060 can �to apologetica desktop or bedside table.

The lack of fans of this type is that the air flow created by the rotating fan blades, is usually not uniform. This is due to changes along the surface of the blades or along the outer surface of the fan. The degree of change may vary from one type of fan to another and even from one fan to another. These changes lead to the creation of an uneven or "intermittent" airflow that can be felt as a series of pulsations of the air, and they can be very uncomfortable for the user. In addition, fans of this type can be noisy, and the noise can become annoying with long-term use of a ventilator in a domestic environment. Another disadvantage is that the cooling effect created by the fan, is attenuated with increasing distance from the user. This means that the fan must be located close to the user so that he felt the cooling effect of the fan.

For rotation of the fan outlet can be used vibrating mechanism so that the airflow is directed in a wide area of the room. Thus, the airflow created by the fan can be changed. In addition, the driving device can rotate the set of lo�ASTA different speeds to optimize airflow, coming out of the fan. Adjusting the speed of rotation of the blades and oscillating mechanism may improve the quality and uniformity of the air flow to the user, however, the airflow remains "intermittent".

Some fans, sometimes called devices to ensure air circulation, creating a cooling flow of air without the use of rotating blades. Such fans, as fans, are described in documents US 2488467 and JP 56-167897 contain a large portion forming the base and including a motor and an impeller which is designed to create an air flow in the base. Airflow is directed through the channel from the base to the slit for the release of air from the air flow goes forward toward the user. The fan described in document US 2488467, produces airflow of a set of concentric slits, and the fan is described in document JP 56-167897, directs the airflow to narrow, leading to only slits for venting.

The fan, which are trying to create a cooling air flow through the gap without the use of rotating blades, requires efficient transfer of the air flow from the base to the slit. The air stream is compressed when it enters the slot, and this compression creates pressure in the fan, �AutoRAE must overcome airflow created by the engine and the impeller that is needed for pushing out the air flow through the gap. Any deficiencies in the effectiveness of the system, for example, the losses through the fan housing or breaks in the path of the air flow will reduce the air flow exiting the fan. The requirement of high efficiency limits the options for the use of motors and other devices designed to create airflow. Fans of this type can be noisy, since the vibration generated by the motor and the impeller, and any turbulence of the air flow with a high probability are transmitted and amplified.

The first object of the invention is the fan that is designed to create an air stream containing the base, which contains the outer casing side wall having at least one hole for air intake, wherein the outer housing accommodates the impeller housing, which has a hole for air intake and outlet of air, an impeller located within the impeller housing, an engine for driving the impeller about an axis to create an air stream through the casing of the impeller, and the sound-absorbing element, located under the hole for the air inlet of the housing of the impeller at a distance from the hole d�I air intake along the specified axis, constituting from 5 mm to 60 mm, and a nozzle mounted on the base, wherein the nozzle includes an internal channel for receiving the air flow from the outlet of the air impeller housing, and the exhaust area through which the airflow exits the fan.

Some of the noise and vibration of the engine is reflected from the inner wall of the outer housing and the impeller housing. The sound-absorbing element, which is located in an external enclosure, particularly when it is located under the hole for the air inlet of the housing of the impeller, can absorb the sounds and noise in an external enclosure. The location of the sound-absorbing element at a distance from the air inlet of the air along the aforementioned axis, which is from 5 mm to 60 mm, minimizes the distance between the noise absorbing member and the hole for the air inlet of the impeller housing without restricting air flow into the housing of the impeller. This design can allow to absorb into the ground a sufficient amount of air to provide unrestricted air flow to the impeller and the fan. Preferably, the side wall had a lot of holes for air intake. The location of the holes for the air intake around the base provides design flexibility of the base and the nozzle and enables air tech� in the Foundation of the plurality of points, so all the device can do more air.

Preferably, the axis is essentially vertical when the base is on a horizontal surface. In a preferred embodiment, the sound-absorbing element is located from the air inlet of the air at the distance of from 10 mm to 20 mm, preferably of approximately 17 mm. It provides a short compact air flow, which minimizes noise and friction losses. With this structure, the sound-absorbing element occupies considerable volume of the bottom of the base and absorbs noise and vibration, which are reflected in the base.

Preferably, the sound-absorbing element contained acoustic foam. This design provides a compact, sound-absorbing element located so as to reduce the formation of turbulent air flow and, thus, reduce noise and vibration in the base. The structure of acoustic foam has sound-absorbing properties corresponding to the shape and orientation of the casing of the impeller. The second sound-absorbing element may be located in the housing of the impeller. Preferably, the second sound-absorbing element is annular, and preferably, it also contains acoustic p�nomaterial.

Preferably, the base was essentially cylindrical. This design can be compact, thus, the dimensions of the base are small compared with the dimensions of the nozzle and compared with the dimensions of the fan. Advantageously, the fan according to the invention provided a suitable cooling effect with a footprint that is smaller than the area of the base is known to fans.

Preferably, the nozzle is passed around the nozzle axis and define an opening through which air from outside the fan sucked air flow exiting the outlet of the plot. Preferably, the nozzle surrounding the hole. Preferably, at least one hole for air intake leading to the outside, was located essentially perpendicular to the specified axis. The direction in which the air exits from the air inlet of air into the outer casing, is located essentially perpendicularly to the direction in which the air flow enters the impeller housing, and the distance and angle are such that no significant loss of speed of the air flow in the direction of the air flow in the impeller housing.

More preferably, at least one hole for air intake into the outer casing was a hole�Tille for air intake, located around the second axis essentially perpendicular to the first axis. Preferably, in this design, the device has a path to flow from each inlet opening leading into the outer casing to the air inlet air leading into the body of the impeller, an inlet leading into the housing of the impeller, essentially perpendicular to the sole opening for air intake or each hole for air intake leading into the outer casing. This design provides a path for air intake, which minimizes noise and friction losses in the system.

In a preferred embodiment, the side wall contains a grid with a plurality of holes and the intermediate portions of the side wall, wherein the surface area is the total area of the plurality of holes and intermediate sections of the side wall. Grid having a plurality of holes, and for the fan, can be manufactured in large quantities and with great reliability, resulting in the production and operation of the fan will be uniform. Preferably, the grid was located essentially along the circumference of the base, and more preferably, the openings of the plurality of holes have been located around the base at equal distances from each other. This design�tion provides many paths for air flow, through which air may flow into the fan, while there are sections of wall that minimize the generation of noise at the base and throughout the device. Preferably, the openings of the plurality of mesh holes were located at a distance no greater than 50 mm along the specified axis, from the inlet of the air impeller housing. This provides a short path for the air flow, which minimizes noise and friction losses.

In a preferred embodiment the open area of the holes is at least 30% of the total surface area of the grid. Preferably, the open area of the grid ranged from 33 to 45% of the total area of the grid. This design contains an open area that allows you to suck enough air into the base to create air flow through the impeller housing, wherein the structure is formed of the side wall, designed to prevent the transmission of noise and vibration in the environment surrounding the fan.

Preferably, the fan was a bladeless fan. Through the use of bladeless fan air jet flow can be created without the use of centrifugal fan. Without the use of a blade of the fan to push out air from in�of tilator can be created relatively uniform air stream, and this air jet can be directed into the room or to the user. The air jet can effectively move from hole to release the air with low energy loss and velocity of the turbulence.

The term "safe" is used to describe a fan in which the air stream is ejected or pushed forward from the fan without the use of moving blades. Therefore, bladeless fan can be seen as a fan, having an output area or zone of release, in which there are no moving blades, from which the airflow is directed to the user or in the room In the output region bladeless fan can do the primary air flow created by one of many different sources, such as pumps, generators, motors, or other devices for the transmission of fluids, and which may contain designed to create airflow rotating device, such as a rotor of the motor and/or impeller. Created primary air flow can pass from the space of the room or other environment outside of the fan and then move back into the room space through the outlet.

Therefore, it is not intended that the description of a fan as bladeless fan description: contains�their source of energy and elements, such as motors, are necessary to carry out secondary functions of the fan. Examples of secondary functions of the fan can serve as start-up, adjustment and oscillation fan.

Preferably, the nozzle contained a Coanda surface located next to the exhaust section, the guide rails out of the air stream over said surface. Preferably, the shape of the outer surface of the inner body portion of the nozzle is to determine the Coanda surface. Preferably, the Coanda surface was located around the hole. The surface is a well-known Coanda surface, which when the flow of the fluid emerging from the outlet openings close to the surface, there is the Coanda effect. Fluid tends to flow near the surface and on top of it, almost "sticking" to the surface or "holding on" for her. The Coanda effect is a proven, well-documented way of Hobbies, wherein the primary air stream is directed over the Coanda surface. Description of the properties of the Coanda surface and the action of the fluid flow passing over the surface of the Coanda can be found in articles such as the article Reba, Scientific American, vol 214, June 1966, pages from 84 to 92. Through the use of the Coanda surface, air�, coming out of the exhaust phase, suck through the hole more air on the outside of the fan.

Preferably, the air flow into the nozzle of the fan from the base. In the description that this air flow will be called the primary air flow. Primary airflow exits the outlet section of the nozzle and preferably passes over the Coanda surface. The primary air stream entrains the air around the exhaust area of the nozzle, which acts as an air amplifier, intended for feeding to the user as the primary air stream and entrained air. Passionate about the air will be called secondary air flow. Secondary air stream is sucked from the space of the room or external area of the environment surrounding the outlet section of the nozzle and, thanks to the displacement from other areas around the fan and passes mostly through the opening defined by the nozzle. Primary air flow directed over the Coanda surface and combined with enthusiastic secondary air flow is total airflow coming out or pushed forward out of the hole defined by the nozzle. Preferably, the drag of the air surrounding the exhaust area of the nozzle, was such that the primary balloon�th flow increased at least five times, more preferably at least ten times, while maintaining the overall uniformity of the output stream.

Preferably, the nozzle was kept expanding surface located on the stream after the Coanda surface. Preferably, the shape of the outer surface of the inner body portion of the nozzle is to determine an expanding surface.

Preferably, the impeller has been impeller with an oblique flow. Preferably, there was a diffuser, located in the housing of the impeller in the flow after the impeller. Preferably, the engine was brushless DC motor to avoid friction losses and the absence of carbon dust from the brushes used in the conventional brush-type motors. Reducing the amount of carbon dust and emissions, it is advisable to clean or sensitive to contamination environments, such as a hospital, or in the presence of people suffering from allergies. Although induction motors are commonly used in fans, nor does it contain brush, brushless DC motors can provide a much wider range of operating speeds compared to induction motors.

Preferably, the fan base contained means�about the direction of the air stream from the outlet of the air impeller housing to the inner nozzle channel.

Preferably, the direction in which the air exits the outlet of the air impeller housing, was essentially perpendicular to the direction in which the airflow passes at least through a part of the internal channel. Preferably, the inner annular channel and preferably, the shape of the inner channel was such as to ensure the separation of the air flow into two air streams in opposite directions around the hole. In a preferred embodiment the air flow passes at least part of the internal channel in the lateral direction, and the air exits the outlet of the air impeller housing in the forward direction. With this in mind, it is preferable that means for directing part of the air flow from the outlet of the air impeller housing contains at least one curved blade. Preferably, the singular form of a curved blade or each curved blade was such as to provide a change of direction of the air flow by about 90°. The curved shape of the blades is such that no significant loss in speed parts of the air flow in their direction in the inner channel.

Preferably, the base content�lo management tool, designed for fan control. For safety reasons and for ease of use it is advisable to place the controls on the distance from the nozzle, so that such control functions as, for example, wobble, tilt, run or perform speed setting must be carried out in fan operation.

Preferably, the exhaust area of the nozzle surrounding the hole and preferably, the outlet section was circular. Preferably, the nozzle surrounding the hole at a distance of 50 to 250 mm. Preferably, the nozzle is contained in at least one wall defining an internal channel and the outlet section, and wherein said at least one wall contains were located opposite each other and defining the discharge station. Preferably, the outlet area had the discharge outlet, and the distance between located opposite each other surfaces of the outlet ranged from 0.5 mm to 5 mm, more preferably from 0.5 mm to 1.5 mm. Preferably, the nozzle contained internal part of the housing and the outside of the housing that define the outlet section of the nozzle. Preferably, each piece was formed from the corresponding annular element, but each part can �to predstavljati a few elements, connected to each other or in any way collected to form the specified part. Preferably, the shape of outer housing was such that overlap the inside of the shell. This can give the opportunity to define the outlet opening of the exhaust section between the overlapping portions of the outer surface of the inner body portion and the inner surface of outer housing of the nozzle. The nozzle can contain multiple separators designed to separate the overlapping parts of the inside of the housing and the outer housing of the nozzle. This may contribute to the maintenance of essentially uniform width of the outlet opening around the hole. Preferably, the spacers were arranged at equal distances along the nozzle.

Maximum air flow to air flow created by the fan, is preferably from 300 to 800 l/s, more preferably from 500 to 800 l/s.

A second object of the invention is the fan that is designed to create air flow and comprising a base that includes an external housing with a side wall that contains a grid with a plurality of holes, the casing impeller located in an external enclosure and having an opening for air intake and outlet of air, cu�lichotku, located in the body of the impeller, and an engine for driving the impeller about the axis to create air flow through the impeller housing, wherein the plurality of holes of the mesh that are located at a distance not exceeding 50 mm along the specified axis from the inlet of air into the impeller housing, and a nozzle mounted on the base, wherein the nozzle includes an internal channel for receiving the air flow from the outlet of the air impeller housing, and the exhaust area through which the airflow exits the fan.

The above-described characteristics of the first object of the invention is equally applicable to the second object of the invention.

Next will be described one embodiment of the invention with reference to the accompanying drawings.

Fig.1 shows a fan, front view;

Fig.2A to the base of the fan shown in Fig.1, a perspective view;

Fig.2b - fan nozzle shown in Fig.1, a perspective view;

Fig.3 - the fan shown in Fig.1, a sectional view;

Fig.4 - part of the fan shown in Fig.3, an enlarged view;

Fig.5A - fan shown in Fig.1, not in a tilted position, side view;

Fig.5b - fan shown in Fig.1, in the first tilted position�, side view;

Fig.5C - fan shown in Fig.1, in the second tilted position, side view;

Fig.6 - the top element of the base of the fan shown in Fig.1, a top view in perspective;

Fig.7 - the main part of the fan shown in Fig.1, a rear view in perspective;

Fig.8 - the main part shown in Fig.7, a perspective view with a spatial separation of parts;

Fig.9a - the location of the two cut lines of the base when the fan is not in a tilted position;

Fig.9b is a section along the line a-a shown in Fig.9a;

Fig.9c is a section along line b-b shown in Fig.9a;

Fig.10A is the location of the other two cut lines of the base when the fan is not in a tilted position;

Fig.10b is a section along the line C-C shown in Fig.10A;

Fig.10C is a section along line D-D shown in Fig.10A.

Fig.1 shows a front view of the fan 10. Preferably, the fan 10 is a bladeless fan that contains the base 12 and the nozzle 14 mounted on the base 12 and supported them. As shown in Fig.2A, the base 12 includes essentially cylindrical outer housing 16 with a plurality of holes 18 for air intake, which is made in the outer casing 16 and through which the primary air flow is sucked in osnovnie from the external environment. In addition, the base 12 includes several user-controlled buttons 20 and user controlled regulator 22, which is designed to control the operation of the fan 10. In this example, the height of the base 12 is from 200 to 300 mm, and the outer diameter of the outer housing 16 is from 100 to 200 mm.

As shown in Fig.2b, the nozzle 14 has an annular shape and defines a Central hole 24. The height of the nozzle 14 is from 200 to 400 mm Nozzle 14 comprises an outlet section 26 located at the rear of the fan 10 and designed to release air from the fan 10 through the opening 24. The exhaust section 26 at least partially located around the opening 24. The inner peripheral surface of the nozzle 14 includes a surface 28 Coanda, located next to the exhaust section 26, the guide rails coming out of the fan 10 air over said surface; extending surface 30 located downstream after the surface 28 Coanda; and a guide surface 32 located downstream after expanding the surface 30. Expanding surface 30 is located on the cone from the Central axis X of the hole 24 in such a way as to facilitate the flow of air exiting the fan 10. The angle between an extending surface 30 and the Central axis X of the hole 24 is from 5 d� 25°, and in this example is approximately 15°. The guide surface 32 is angled toward expanding the surface 30 in order to further promote the effective delivery of cooling air from the fan 10. Preferably the guide surface 32 is parallel to the Central axis X of the hole 24 to provide a substantially flat and substantially smooth surface for the air flow exiting the outlet section 26. Visually attractive beveled surface 34 is located downstream after the guide surface 32 and the ends of the end surface 36 that is located essentially perpendicular to the Central axis X of the hole 24. Preferably, the angle between the beveled surface 34 and the Central axis X of the hole 24 was equal to about 45°. The total depth of the nozzle 24 in the direction along the Central axis X of the hole 24 is from 100 to 150 mm and in this example it is equal to about 110 mm.

Fig.3 shows a sectional view of the fan 10. The base 12 includes a bottom element 38 of the base, the intermediate element 40 of the base, mounted on the lower element 38 of the base, and the top element 42 of the base, mounted on the intermediate element 40 of the base. The lower element 38 of the base contains a substantially flat bottom surface 43. In the intermediate element�e 40 the base is a controller 44, designed to control the operation of the fan 10 in response to a button of user-controlled buttons 20 which are shown in Fig.1 and 2, and/or in response to manipulation of a managed user controller 22. The intermediate element 40 of the base may also include a vibrating mechanism 46 is designed to implement the oscillatory motion of the intermediate element 40 of the base and the top element 42 of the base relative to the lower element 38 of the base. Preferably, the range of the oscillatory cycle of the upper element 42 of the base ranged from 60° to 120°, and in this example it is equal to about 90°. In this example, the oscillating mechanism 46 can perform approximately 3 to 5 oscillatory cycles per minute. The cable 48 AC power goes through the hole made in the lower element 38 of the base, and is designed to supply electric power to the fan 10.

The top element 42 of the base 12 has an open upper end. The top element 42 of the base comprises a cylindrical protective grid 50, which is provided with a plurality of holes. Between the openings are located in the region of the side wall, called "sections". These openings allow the presence of holes 18 for the air intake of the base 12. Open space is a portion of the total surface area of the cylinder�economic base and is equivalent to the total surface area of the holes. In the illustrated embodiment, the open area is 33% of the total area of the mesh, wherein the diameter of each hole is 1.2 mm, and the distance from the center of one hole to the center of an adjacent hole is 1.8 mm, and between the holes has a plot with a size of 0.6 mm. Open area with holes necessary to ensure that the air flow was supplied to the fan, however, large openings can transmit vibration and noise from the engine to the external environment. Open area ranging from 30% to 45%, represents a compromise between the size of areas to limit the spread of noise, and the holes intended to ensure the free, unhindered access of air to the fan.

The top element 42 of the base contains the impeller 52, designed for the suction of the primary air flow through the protective mesh openings 50 in the base 12. Preferably, the impeller 52 was made in the form of an impeller with an oblique flow. The impeller 52 is connected to the rotating shaft 54 extending from the motor 56. In this example, the motor 56 is a brushless DC motor, the speed of which is controlled by the controller 44 in response to manipulation of the user with the controller 22. Preferably, mA�largest speed of rotation of the motor 56 ranged from 5,000 to 10,000 rpm. The motor 56 is located in the motor housing which includes a top portion 58 connected to the lower part 60. The engine casing is held in the upper element 42 of the base by attachment means 63. The upper end of the upper element 42 of the base comprises a cylindrical outer surface 65. The fastening means 63 of the casing of the motor is connected to the open upper end of the upper element 42 of the base, for example, using snap connectors. The motor 56 and the casing is not rigidly connected to the fastening means 63 of the casing of the engine, which provides a slight movement of the motor 56 in the upper element 42 of the base.

The fastening means 63 of the casing of the engine comprises a curved blades 65A and 65b extending inward from the upper end of the fastening means 63 of the casing of the engine. Each curved blade 65A, 65b blocks the upper part 58 of the casing of the engine. Thus, the fastening means 63 engine casing and curved blades 65A and 65b is made so as to fix and hold the engine casing during movements. In particular, the fastening means 63 of the casing of the motor prevents the displacement of the engine casing and its fall towards the nozzle 14 while turning the fan 10.

The upper portion 58 or the lower part 60 of the housing of the motor comprises a diffuser 62 in the form of a stationary disk with a spiral abramia, located on the stream after the impeller 52. One of spiral ribs 62A has an inverted U-shaped cross-section in section along a vertical line passing through the upper element 42 of the base. The shape of this spiral ribs 62A allows the cord to pass through the rib 62A.

The motor housing is located in the housing 64 of the impeller and attached. The housing 64 of the impeller, in turn, attached to the many placed at a certain angular distance from each other of the supports 66, in this example, the three pillars, located in the upper element 42 of the base 12. In the housing 64 of the impeller casing is 68, generally having the shape of a truncated cone. The shape of the housing 68 is selected such that the outer edge of the impeller 52 were located close to the inner surface of the casing 68, but not touching her. With the bottom of the housing 64 of the impeller is connected essentially ring-shaped element 70 for air intake, which is intended for the direction of primary air flow into the housing 64 of the impeller. The top protective mesh 50 is located above the element 70 to the air intake by about 5 mm. Preferably, the height of the protective mesh 50 was approximately 25 mm, but may range from 15 to 35 mm of the top of the body 64 of the impeller has an essentially ring-shaped opening 71 for air discharge is intended to be sent to�zdeshnego flow, emerging from the housing 64 of the impeller, to the nozzle 14.

Preferably, the base 12 also contain a noise-absorbing elements that are designed to reduce noise transmission from the base 12. In this example, the top element 42 of the base 12 includes a disc-shaped element 72 made of foam and directed to the bottom of the upper element 42 of the base, and essentially ring-shaped element 74, made of foam material and located in the housing 64 of the impeller. The bottom protective grid 50 is located essentially at the same height as the top surface is made of foam material disc-shaped element 72, and beside her.

In this embodiment, the element 70 for air intake is made from foam disc-shaped element 72 at a distance of approximately 17 to 20 mm Can be considered that the surface area of the air inlet of the top element 42 of the base equal to the circumference of the element 70 for air intake multiplied by the distance of the member 70 for the air intake to the upper surface made of a foam material disc-shaped element 72. In the illustrated embodiment of the invention the surface area of the air intake ensures a balance between the volume of foam required to absorb the OTP�proposed noise and vibration from the engine, and the size of the air intake, which provides the flow rate of the primary stream up to 30 l/C. the fan with a large amount of foam is sure to be a reduced field of air intake that will limit the flow of air into the impeller. The restriction of the flow of air entering the impeller and the motor, can lead to deterioration of the engine and the creation of additional noise.

To the housing 64 of the impeller is attached a flexible sealing element. A flexible sealing element prevents the reverse flow of air into the element 70 for intake of air along a path extending between an outer housing 16 and the housing 64 of the impeller, which can be achieved with the division of the primary air flow involved from the external environment, from the air flow coming out of the hole 71 to the air outlet of the impeller 52 and the diffuser 62. Preferably, the sealing member contained lip seal 76. The sealing member has an annular shape that surrounds the housing 64 of the impeller and located between the housing 64 of the impeller and an outer housing 16. In the illustrated embodiment, the diameter of the sealing element is greater than the radial distance from the housing 64 of the impeller to the outer housing 16. Thus, the outer part 77 of the sealing element is pressed against the external building�16 and is located along the inner surface of the outer housing 16, forming a seal. Lip seal 76 according to a preferred embodiment, the conical tapering towards the tip 78 deleting from the housing 64 of the impeller toward the outer housing 16. Preferably, the lip seal 76 was made of rubber.

In addition, the lip seal 76 includes a guide part that is used to route the power supply cable to the motor 56. The guide portion 79 in the illustrated embodiment of the invention made in the form of a tube and can be insulating sleeve.

Fig.4 shows a cross section of the nozzle 14. The nozzle 14 includes an annular outer portion 80 of the housing that engages with the annular inner part 82 of the housing and surrounding the inner part. Each of these parts can be made of several connected parts, but in this embodiment, as the outer portion 80 of the housing and the inner part 82 of the housing is a cast product. The inner part of the housing 82 defines a Central hole 24 of the nozzle 14 and has an external peripheral surface 84, the shape of which defines the surface 28 Coanda extending surface 30, the guide surface 32 and the beveled surface 34.

Along the outer portion 80 of the housing and the inner part 82 of the housing form concealers�th inner channel 86 of the nozzle 14. Thus, the inner channel 86 is located around the opening 24. The inner channel 86 is limited to the inner peripheral surface 88 of the outer part 80 of the housing and the inner peripheral surface 90 of the inner part 82 of the housing. The outer portion 80 of the housing comprises a base 92 which is connected to the open upper end of the upper element 42 of the base 12, for example, using snap connectors and is located above the upper end of the upper element 42 of the base 12. The base 92 of the outer part 80 of the housing has an opening through which the primary air flow enters the inner channel 86 of the nozzle 14 from the upper end of the upper element 42 of the base 12, and an open top end of the fastening means 63 of the casing of the engine.

The exhaust section 26 of the nozzle 14 is located at the rear of the fan 10. The exhaust section 26 is formed by overlapping portions 94, 96 of the inner peripheral surface 88 of the outer part 80 of the housing and the outer peripheral surface 84 of the inner part 82 of the housing, respectively. In this example, the outlet section 26 is essentially ring-shaped and, as shown in Fig.4, has an essentially U-shaped cross-section in the section along the line passing through the diameter of the nozzle 14. In this example, the overlapping parts 94, 96 of the inner peripheral surface 88 of the outer part 80 of the housing and the external p�riverine surface 84 of the inner part 82 of the housing is formed so that what exhaust section 26 converges towards the outlet 98, intended for the direction of primary air flow over the top surface 28 Coanda. The outlet opening 98 has the form of an annular slit, preferably a relatively constant width comprised between 0.5 to 5 mm. In this example, the width of the outlet 98 is equal to about 1.1 mm In the exhaust section 26 can be located separators designed to separate from each other, the overlapping portions 94, 96 of the inner peripheral surface 88 of the outer part 80 of the housing and the outer peripheral surface 84 of the inner part 82 of the housing to maintain the required width of the outlet 98. These separators can be integrated with the inner peripheral surface 88 of the outer part 80 of the housing or the outer peripheral surface 84 of the inner part 82 of the housing.

As shown in Fig.5A, 5b and 5C, the upper element 42 of the base movable relative to the intermediate element 40 of the base and the lower element 38 of the base 12. The top element 42 of the base can be moved from a first fully tilted position shown in Fig.5b, the latter in a fully tilted position shown in Fig.5C. Preferably, the X-axis was tilted at an angle of about 10° when the main h�industry moves from non-tilted position, it is shown in Fig.5A, to one of two fully tilted positions. The shape of the external surfaces of the top element 42 of the base and the intermediate element 40 of the base such that neighboring parcels are essentially flush when the upper element 42 of the base is not in a tilted position.

As shown in Fig.6, the intermediate element 40 of the base includes an annular bottom surface 100, which is mounted on the lower element 38 of the base, essentially cylindrical side wall 102 and a curved top surface 104. The side wall 102 has several openings 106. User controlled regulator 22 protrudes through one of the holes 106, and user-controlled buttons 20 can be accessed through other openings 106. Curved top surface 104 of the intermediate element 40 of the base has a concave shape that can be described as a saddle-like shape. In the upper surface 104 of the intermediate element 40 of the base, a hole 108 that is designed to host electrical cable 110 (shown in Fig.3) extending from the motor 56.

As shown in Fig.3, the electrical cable 110 is a flat cable attached to the engine 112 in place of the connection. Electrical cable 110 extending from the motor 56, comes out of the bottom of the casing 60� engine via a spiral rib 62A. Channel for electrical cable 110 in the form repeats the housing 64 of the impeller, and the shape of the guide portion 79 of the lip seal 76 such that the electrical cable 110 can pass through the flexible sealing element. Tube lip seal 76 allows you to attach the electrical cable and hold it in the upper element 42 of the base. In the lower part of the upper element 42 of the base electrical cable 110 is located in the cuff 114.

Additionally, the intermediate element 40 of the base contains four supporting element 120 is designed to provide upper support element 42 of the base on the intermediate element 40 of the base. The supporting elements 120 protrude upward from the upper surface 104 of the intermediate element 40 of the base and are located essentially at the same distance from each other, and essentially at the same distance from the center of the upper surface 104. The first pair of supporting elements 120 is located along line b-b shown in Fig.9a, and the second pair of supporting elements 120 parallel to the first pair of supporting elements 120. As shown in Fig.9b and 9 C, each support element 120 comprises a cylindrical outer wall 122, and an open upper end 124 and a closed lower end 126. The outer wall 122 of the support member 120 surrounds the rotating element 128, in the form of ball bearings. Preferably�, to the radius of the rotating member 128 was slightly less than the radius of the cylindrical outer wall 122 so that the rotating element 128 is held in the support element 120 and was movable. The elastic member 130 located between the closed bottom end 126 of the support element 120 and the rotating element 128, pushes the rotating element 128 from the upper surface 104 of the intermediate element 40 of the base so that a portion of the rotating member 128 stands for the boundary of the open upper end 124 of the support element 120. In this embodiment the elastic element 130 made in the form of helical springs.

As shown in Fig.6, the intermediate element 40 of the base also contains several guidelines designed to hold the top of the base element 42 on the intermediate element 40 of the base. The guides also serve for the direction of movement of the upper element 42 of the base with respect to the intermediate element 40 of the base, so essentially there is no twisting or rotation of the top element 42 of the base with respect to the intermediate element 40 of the base when moving the upper element 42 of the base of the tilted position, or while moving in a tilted position. Each of the guides is located in a direction that is essentially parallel to the axis X. for Example, one napravlyayuschiysya along the line D-D, it is shown in Fig.10A. In this embodiment the guides are a pair of relatively long inner rails 140 located between a pair of relatively short external guide rails 142. As shown in 9b and 10b, the cross section of each of the inner rails 140 has a l-shaped form, wherein each of the inner rails 140 contains wall 144, which is located between the respective pair of supporting members 120 and which is connected to the upper surface 104 of the intermediate element 40 of the base and leaves it up. Each of the inner rails 140 further comprises a curved flange 146, which is located along the length of the wall 144 and which acts perpendicularly from the top wall 144 toward the adjacent outer guide rail 142. The cross section of each of the outer rails 142 also has a G-shaped and each of the outer rails 142 contains a wall 148, which is connected to the upper surface 52 of the intermediate element 40 of the base and leaves it up, and contains a curved flange 150 which is located along the length of the wall 148 and which acts perpendicularly from the top wall 148 in the direction from the adjacent inner guide rail 140.

As shown in Fig.7 and 8, the upper element 42 of the base contains creatures� cylindrical side wall 160, an annular lower end 162 and a curved base 164, which is located at a distance from the lower end 162 of the top element 42 of the base to form the groove. Preferably, the safety net was 50 is integral with the side wall 160. Outer diameter of the side wall 160 of the top element 40 of the base essentially coincides with the external diameter of the side wall 102 of the intermediate element 40 of the base. The base 164 has a convex shape and may generally be described as having an inverted saddle-like shape. At the base of a hole 164 166 that is designed to host cable 110 emerging from the base 164 of the top element 42 of the base in the cuff 114. Two pairs of locking elements 168 are up (as shown in Fig.8) from the border of the base 164. Each pair of locking elements 168 is located along a line extending in a direction that is essentially parallel to the axis X. for Example, one of the pairs of locking elements 168 is located along the line D-D shown in Fig.10A.

With the base 164 of the top element 42 of the base are connected by a convex plate 170 tilt. Plate 170 of the slope is located in the recess of the top element 42 of the base, and its curvature is essentially coincides with the curvature of the base 164 of the top element 42 of the base. Each of the locking elements 168 protrudes through one� from their holes 172, located on the border of the plate 170 tilt. The push plate 170 of inclination is such that it defines a pair of convex grooves 174, intended to interact with the rotating elements 128 of the intermediate element 40 of the base. Each chute 174 passes in a direction essentially parallel to the axis X, and is designed to accommodate the rotating elements 128 a corresponding pair of supporting elements 120, as shown in Fig.9c.

Plate 170 tilt also has several tracks, each of which is located so as to at least partially located under the respective intermediate guide element 40 of the base and, thus, interact with the guide to retain the top of the base element 42 on the intermediate element 40 of the base and to move the top element 42 of the base with respect to the intermediate element 40 of the base. Thus, each of the paths passes in a direction essentially parallel to the axis X.

For example, one of the tracks located along the line D-D shown in Fig.10A. In this embodiment, multiple tracks are a pair of relatively long inner tracks 180 located between a pair of relatively short outer tracks 182. As shown in Fig.9b and 10b, the cross section of each inner�her track 180 is l-shaped and each of the inner tracks 180 contains essentially vertical wall 184 and a curved flange 186, which acts perpendicularly inward from a portion of the top wall 184. The curvature of a curved flange 186 of each inner track 180 essentially matches the curvature of the curved flange 146 of each inner guide rail 140. The cross section of each outer tracks 182 also has a G-shaped, and each of the outer tracks 182 contains essentially vertical wall 188 and a curved flange 190 that extends along the length of the wall 188 and which acts perpendicularly inward from a portion of the top wall 188. The curvature of a curved flange 190 of each outer tracks 182 essentially matches the curvature of the curved flange 150 each outer guide rail 142. Plate 170 tilt further comprises a hole 192, designed to accommodate electrical cable 110.

For the connection of the top element 42 of the base with the intermediate element 40 of the base plate 170 tilt is inverted relative to the position shown in Fig.7 and 8, and the track plate 174 170 tilt fitted directly to the rear supporting members 120 of the intermediate element 40 of the base and align them relative to the supporting elements 120. Electrical cable 110, passed through a hole 166 of the top element 42 of the base, may be threaded through the holes 108, 192 plates 170 and tilt of the intermediate element 40 of the base, respectively, DL� subsequent connections to the controller 44, as shown in Fig.3. Next, the plate 170 tilt slide over the intermediate element 40 of the base so that the rotating elements 128 interacted with the tracks 174, as shown in Fig.9b and 9c, the curved flange 190 each outer track 182 is positioned at the curved flange 150 of the corresponding outer guide 142, as shown in Fig.9b and 10b, and the curved flange 186 of each inner track 180 is positioned at the curved flange 146 of the corresponding inner guide rail 140, as shown nafig.9b, 10b and 10C.

When the plate 170 tilt is centered on the intermediate element 40 of the base, the top element 42 of the base is lowered to the plate 170 of inclination so that the locking elements 168 are located in the openings 172 of the plate 170, a tilt and plate 170 tilt was located in a recess of the top element 42 of the base. Next, the intermediate element 40 of the base and the top element 42 of the base is inverted, and the element 40 of the base is moved along the direction of X-axis to the first array of holes a located on the plate 170 tilt. Each of these holes a adjusted relative to the cylindrical protrusions 196a located on the base 164 of the top element 42 of the base. Self-tapping screw is screwed into each of the holes a for the purpose of penetrating below the ledge 196�, thereby partially connect the plate 170 of inclination with the upper element 42 of the base. Next, the intermediate element 40 of the base is moved in the opposite direction until the second set of holes 194b located on the plate 170 tilt. Each of these holes 194b also adjusted relative to the cylindrical protrusions 196b located on the base 164 of the top element 42 of the base. Self-tapping screw is screwed into each of the holes 194b for the purpose of penetrating below the ledge 196b to complete the connection plate 170 of inclination with the upper element 42 of the base.

When the upper element 42 attached to the base of the intermediate element 40 of the base and the lower surface 43 of the lower element 38 is located on the grounds of the support surface, the upper element 42 of the base is supported by a rotating elements 128 of the support elements 120. Elastic elements supporting elements 130 120 moves the rotating elements 128 in the direction from the closed lower ends of the support elements 126 120 by a distance which is sufficient to prevent damaging the upper surfaces of the intermediate element 40 of the base when the upper element 42 of the base is tilted. For example, as shown in each of figs.9b, 9c, 10b and 10C, the lower end 162 of the top element 42 of the base moves from the upper surface 104 time ever�member 40 of the base to prevent their contact in case when the upper element 42 of the base is tilted. Next, the action of the elastic element 130 moves the concave upper surface of curved ribs 186, 190 tracks from convex lower surfaces of curved ribs 146, 150 guides.

In order to tilt the upper element 42 of the base with respect to the intermediate element 40 of the base, the user moves the top element 42 of the base in a direction parallel to the X axis, to move the top element 42 of the base in one of two fully tilted positions, shown in Fig.5b and 5C, resulting in rotating elements 128 are moved along the tracks 174. When the upper element 42 of the base is in the desired position, the user releases the upper element 42 of the base which is held in position by the friction forces generated by the conjunction of concave curved upper surfaces of the ribs 186, 190 paths and convex lower surfaces of curved ribs 146, 150 of the guides, while the frictional force prevents movement of the upper element 42 of the base under the action of gravity towards not tilted to the position shown in Fig.5A. The fully tilted position of the top element 42 of the base are determined by the touch of one of the locking elements 168 of each pair of corresponding inner guide rail 40.

For the purpose of controlling the fan 10, the user presses the corresponding one of the buttons 20, located on the base 12, whereby the controller 44 drives the motor 56 for the purpose of rotation of the impeller 52. The rotation of the impeller 52 causes the primary air stream is sucked into the base 12 through 18 holes for air intake. Depending on the speed of rotation of the motor 56, the flow rate of primary air flow can be from 20 to 30 l/s Primary air stream passes successively through the housing 64 of the impeller, the upper end of the upper element 42 of the base and the open end of the fastening means 63 of the casing of the engine and enters the inner channel 86 of the nozzle 14. Primary air flow exiting the orifice 71 for discharge of the air is directed forward and upward. In the nozzle 14 of the primary air flow is divided into two air streams which pass in opposite directions around the center hole 24 of the nozzle 14. Part of the primary air flow received by the nozzle 14 in a lateral direction, is moved in the inner channel 86 in a lateral direction without significant direction, while another portion of the primary air flow received by the nozzle 14 in the direction parallel to the axis X is directed through a curved vanes 65A, 65b fastening means 63 to�ear of the engine to ensure the ingress of air flow in the inner channel 86 in the lateral direction. The blade 65A, 65b provides the ability to deflect airflow away from the direction parallel to the axis X. When air flows through the inner channel 86, the air flows into the exhaust section 26 of the nozzle 14. Preferably, the airflow in the exhaust section 26 was essentially evenly distributed around the opening 24 of the nozzle 14. In every part of the outlet section 26 in the direction of flow of the air stream essentially opposite to the direction in another part of the outlet section 26. A portion of the airflow is compressed by the converging part of the exhaust section 26 and exits through the outlet 98.

Primary air flow exiting the outlet section 26, is directed over the top surface 28 of the Coanda nozzle 14, which leads to the creation of a secondary air flow through the entrainment of air from the external environment, more specifically from the area around the outlet 98 of the exhaust section 26 and from the area around the rear of the nozzle 14. This secondary air flow passes through the Central hole 24 of the nozzle 14 where it is combined with the primary air flow and the overall airflow or air jet ejector forward from the nozzle 14. Depending on the speed of rotation of the motor 56, the mass flow rate of the air flow coming forward from the fan 10, and up to 400l/s, preferably can reach up to 600 l/s and the maximum velocity of the air stream may be from 2.5 to 4 m/s.

Uniform distribution of the primary air flow along the exhaust section 26 of the nozzle 14 provides uniform airflow over the expanding surface 30. Expanding surface 30 causes a decrease in the average speed of the air flow due to the movement of the air flow through the area managed extension. The relatively small angle between the expanding surface 30 and the Central axis X of the hole 24 allows air flow to expand gradually. Otherwise abrupt or rapid deviation could result in breakage of the air flow in the area of expansion would be formed swirls. Such turbulence can cause increased turbulence and associated noise in the air stream, which may be undesirable, especially in a household device, such as a fan. The airflow is pushed forward for expanding the surface 30 may seek to continue to diverge. A guide surface 32 that is located essentially parallel to the Central axis X of the hole 24, further reduces the air flow. As a result, the air flow can be effectively removed from the nozzle 14, the air flow can quickly�about to be felt within a few feet from the fan 10.

The invention is not limited to the above detailed description. Specialists in this field can offer various changes.

For example, the sound-absorbing sound-absorbing element or elements, such as sound-absorbing or acoustic foam, can have any shape or be of any suitable construction, for example, can be altered density or type of foam. The fastening means of the engine casing and the sealing member may have other dimensions and/or shape in comparison with that described above and may be located elsewhere in the fan. The technology to create an airtight seal at the sealing element can vary, and may provide additional elements, such as adhesives or fasteners. The sealing member, the guide portion of the blade and the fastening means of the engine casing can be made of any material of suitable strength and flexibility or rigidity, for example, foam, plastic, metal or rubber. The movement of the upper element 42 of the base relative to the base can be carried out with the engine and can be actuated by the user by pressing one of the buttons 20.

1. The fan is designed to create air flow and comprising a base that contains external to�bus side wall, having at least one hole for air intake, and in the outer base housing is an impeller housing having an opening for air intake and outlet of air, an impeller located within the impeller housing, an engine for driving the impeller about an axis to create an air stream through the casing of the impeller, and the sound-absorbing element located under the hole for the air inlet of the housing of the impeller at a distance from the inlet air along a specified axis, which is from 5 mm to 60 mm; and a nozzle mounted on the base and containing the inner channel, intended for receiving the air flow from the outlet of the air impeller housing, and the outlet section through which the air flow has the option of exiting the fan.

2. The fan according to claim 1, wherein the axis is essentially vertical when the base is on a horizontal surface.

3. The fan according to claim 1, wherein the sound-absorbing element is located at a distance from the air inlet of the air gap of from 10 mm to 20 mm.

4. The fan according to claim 1, wherein the sound-absorbing element contains acoustic foam.

5. The fan according to claim 1, in which the base is essentially cylindrical.

6. Fan�p according to any of claims.1-5, in which the nozzle passes around the nozzle axis and defines an opening through which air from outside the fan sucked air flow exiting the outlet of the plot.

7. The fan according to claim 6, in which at least one hole for air intake leading into the outer casing, is located essentially perpendicular to the nozzle axis.

8. The fan according to claim 6, in which at least one hole for air intake leading into the outer casing, has several openings for air intake, located around the second axis essentially perpendicular to the nozzle axis.

9. The fan according to claim 6, which has a path to flow from each hole for air intake outer housing to the air inlet of the air impeller housing, wherein the inlet of the air casing impeller essentially perpendicular to the sole opening for air intake or each inlet of external air corps.

10. The fan according to any of claims.1-5, which contains the second noise absorbing element located in the housing of the impeller.

11. The fan according to claim 10, wherein the second noise absorbing element is ring-shaped.

12. The fan according to claim 10, wherein the second noise absorbing element contains acoustic foam.

13. The fan according to any of claims.1-5, in which the valve�op is safe.

14. The fan according to any of claims.1-5, in which the nozzle includes a Coanda surface located next to the exhaust section, directing the air flow over said surface.

15. The fan according to claim 14, wherein the nozzle includes an expanding surface located on the stream after the Coanda surface.



 

Same patents:

FIELD: heating.

SUBSTANCE: this invention relates to a centrifugal ceiling fan. The proposed fan includes a casing, a motor and an impeller. The above casing has an upper surface with an air intake and a lower surface with an air bleed. According to a preferable version of the invention, the specified lower surface has a round, bowl shape; besides, there is a group of holes in it, which determine the air bleed. The above impeller includes a rotary shaft and a group of blades located around the above said shaft. The above said blades are preferably of a curved shape to provide air flow in all directions between the first direction that is mainly perpendicular to the rotary shaft and the second direction that is mainly parallel to the rotary shaft, due to which uniform room ventilation is provided. In the proposed fan a provision can also be made for a heating element for heating of the air leaving the fan.

EFFECT: invention is aimed at creation of a noiseless fan that is safe at operation and provides for uniform air distribution inside the room.

15 cl, 9 dwg

Fan // 2526135

FIELD: heating, ventilation.

SUBSTANCE: fan designed for creating the air flow and comprising a base with a hole for air inlet and a hole for air outlet, at that in the base there is an impeller and a motor for rotating the impeller to create an air flow from the hole for air inlet to the hole for air outlet. In addition, the fan comprises a vertical elongated annular nozzle comprising an inner channel having a hole for air inlet, designed for receiving air flow from the base, and an outlet part designed for outlet of the air flow, at that the nozzle defines the hole through which the air flow exiting from the outlet part, sucks the air outside the fan.

EFFECT: invention is aimed at creation of the fan with smaller radial size, without loss of capacity.

32 cl, 14 dwg

FIELD: heating.

SUBSTANCE: invention relates to a fan for a heating device in a vehicle. The fan comprises an electric drive of a fan, and also a wheel made as capable of fan driving with the drive, besides, closure of the electric contact of the fan drive is carried out with the help of spring contacts. Besides, there is a fan channel made in the fan body connected to the fan electric drive as circularly arranged around the axis (A) of rotation, being open at the axial side closed with the fan wheel, and the fan channel comprises an inlet zone and an outlet zone separated by means of an interruption zone, besides, in the fan body there is a hole, through which the driving shaft of the fan drive stretches as connected with the wheel for joint rotation.

EFFECT: invention is aimed at creation of more reliable electric closure of a fan contact.

10 cl, 4 dwg

Fan // 2507419

FIELD: engines and pumps.

SUBSTANCE: bladeless fan includes nozzle 1 and a creation device of flow through it. Nozzle 1 has internal channel 10, outlet opening 12 for receiving air flow from internal channel 10. Coanda surface 14 adjacent to outlet opening 12; with that, outlet opening 12 is located so that air flow can be directed along that surface, and a diffuser located after Coanda surface. Diffuser has surface 46. Air flow creation device through nozzle 1 is made in the form of impeller 30 driven by electric motor 22.

EFFECT: creation of a more uniform air flow along the whole working surface of the fan; making its more compact and safer.

17 cl, 5 dwg

Fan // 2505714

FIELD: ventilation.

SUBSTANCE: fan is designed for creation of an air jet in a room, an office or other rooms. A bladeless fan includes nozzle (14) installed on base (12), and an air flow creation device. Nozzle (14) includes internal channel (94) intended to receive an air flow, outlet section (26) designed for air flow discharge and several fixed guide vanes (120), each of which is located in internal channel (94) and intended to direct some part of the air flow to outlet section (26). Nozzle (14) determines hole (24) through which the air flow leaving outlet section (26) sucks the air outside the fan.

EFFECT: improvement of comfortable conditions and increase of fan safety.

33 cl, 14 dwg

Fan // 2504694

FIELD: machine building.

SUBSTANCE: bladeless fan includes a nozzle and an air flow creation device through the nozzle; besides, the nozzle includes an internal channel, an outlet section intended for air flow reception from the internal channel and a surface that adjoins the outlet section, above which the outlet section is made so that it guides the air flow; the nozzle is installed on a rack with adjustable height.

EFFECT: increasing safety when using a fan.

19 cl, 15 dwg

Fan // 2463483

FIELD: ventilation.

SUBSTANCE: fan without blades for creation airflow contains a nozzle 1 mounted on the basis 16, comprising means for creating an air flow - the impeller 30 and diffuser 32, through the nozzle 1. Nozzle 1 has an inner channel 10 for receiving the air flow from the base 16 and an outlet 12 through which the air flow is released. The nozzle 1 is located around the axis and locates the opening 2, through which outside the fan the air is pulled in through airflow discharged from the outlet 12. The nozzle 1 has a surface over which there is a discharge opening 12 for directing the air flow. The surface comprises a diffuser part 46 moving away from the axis, and the guiding part 48, located downstream after the diffuser part 46 at an angle to the latter.

EFFECT: creation of a compact low noise safe device.

28 cl, 5 dwg

FIELD: machine building.

SUBSTANCE: proposed plant comprises housing accommodating motor stator with multiphase winding, compressor compression radial-flow stage flow section fixed elements, housing cover accommodating stator elements of plant rotor magnetic suspension system bearings, and plant rotor carrying rotor elements of bearings and compressor and motor rotary assemblies. Note here that motor stator magnetic core is made up of sections, their number complying with that of compression stages. Magnetically and electrically not conducting separation cylinders are arranged between said sections. Note here that stator winding is shared by all sections and laid in core section and separation cylinder grooves. Every integrated rotary assembly of compressor and motor comprises impeller. Said impeller inlet has guide channels to feed gas to impeller inlet while motor rotor section is located there outside. Note also that magnetic coupling between motor and rotor sections is ensured by fixed cylinders made from electrically nonconducting materials with built-in cores made up of thin stacks of radial plates of electric steel.

EFFECT: decreased overall dimensions.

2 cl, 2 dwg

Blower assembly // 2460904

FIELD: engines and pumps.

SUBSTANCE: blower assembly 10 is designed to create air jet. Blower comprises outlet 14 arranged on bed. Said bed comprises outer housing 16 and case 64 of impeller 52 arranged in outer housing 16. Case 64 has air inlet 70 and air outlet and houses impeller 53 and its drive motor 56 to force airflow through case 64. Aforesaid outlet has inner chamber 86 to direct airflow from impeller case 64 and constricted section 26 for airflow to be forced out from blower 10. Flexible sealing element is arranged between outer housing 16 and case 64 of impeller 52.

EFFECT: reduced air loss and noise, increased airflow.

19 cl, 17 dwg

Fan // 2458255

FIELD: ventilation.

SUBSTANCE: vaneless fan includes nozzle 1 and device for creation of flow through it. Nozzle 1 has internal channel 10, outlet hole 12 for receiving the air flow from internal channel 10 and Koand surface 14 adjacent to outlet hole 12. The latter is located so that the air flow can be directed along that surface. Device for creation of the air flow through nozzle 1 is made in the form of impeller 30 brought into action with electric motor 22.

EFFECT: creation of more uniform air flow along the whole working surface of fan; more compact and safe design.

18 cl, 5 dwg

FIELD: natural gas transportation mains.

SUBSTANCE: invention relates to gas-transfer energy complexes used for increasing pressure of natural gas transported along gas mains. Novelty in proposed self-contained gas-transfer energy complex of gas mains including at least one compressor station with at least one centrifugal gas charger driven by electric motor is that proposed complex contains power plant consisting of at least power turbine unit including turbine and multiple turbogenerator (with two or more pairs of poles) with common shaftline installed on magnetic supports. Leads of turbogenerator stator winding are electrically connected directly with ins of electric motor stator winding, and electric motor with gas charger have common shaftline installed on magnetic supports. Rated speed of shaftline is set equal to rated speed of gas charger, and rated output voltage frequency of turbogenerator ftg is equal to nch · pm/60 where nch is speed of shaftline of electric motor and charger, pm is number of pairs of electric motor poles, and number of pairs of poles ptg of turbogenerator is 60, ftg/ntg where ntg is speed of shaftline of turbine and turbogenerator. Proposed invention provides self-contained operation of complex with remote control. Groups of turbine-generator and charger and drive are simplified in design, power loses for production and transmission of energy and electric drive are brought to minimum.

EFFECT: increased efficiency as compared with known systems.

7 cl

FIELD: in-flow ventilating systems.

SUBSTANCE: ventilating system includes ventilating unit 1, radiator unit 2, filtering unit 3 and distributing unit 4. Unit 1 includes main and reserve radial fans 6, 7 having inlet manifolds 8, impellers 9 with main and covering discs 11, 12, radial blades 10 and converging gap between manifold 8 and disc 12. Fans 6, 7 are separated by partition 17 in housing 16 for forming vortex cavities between manifold 8 and disc 12 and ducts 19. Vortex suppressing plates are mounted in said cavities. Surface area of cross sections of ducts 19. Surface area and diameter of impeller 9, distance between one wall 18 and blades 10 are mutually related by predetermined relations. When flow is directed to duct 19 of fans 6 or 7 by means of flaps 25 arranged in unit 4 or valves, it is possibly to perform maintenance of system without interrupting its operation.

EFFECT: reduced size, improved comfort of maintenance of system.

17 cl, 13 dwg

FIELD: non-positive-displacement pumps.

SUBSTANCE: centrifugal compressing device comprises engine (50) that set rotor (52) in rotation and at least one compressor that has housing of the stator and a set of wheels provided with blades (56) mounted on the driven shaft that is set in rotation inside the housing of the stator. The motor is mounted in pressure-tight crank case (86). The compressing device additionally has a set of active guiding axial and radial bearings (60), (62), (64), (66), and (67) of the rotor and driven shaft and means for cooling engine and guiding bearings by means of sucking gas supplied by the compressor at the outlet of the first compression stage. The cooling means have a set of inner pipelines (80-1), (80-2), (80-3), (80-4), (80-5) and (80-6) that supply cooling gas to the engine and bearings. The flow rate of the cooling gas supplied to the engine differs from that of the cooling gas supplied to the bearings and flow together upstream of the first compression stage .

EFFECT: enhanced reliability.

Fan unit // 2355916

FIELD: ventilation.

SUBSTANCE: invention relates to fan engineering and can be used as a component of space technology temperature control systems. The technical result is achieved by a fan unit comprising a casing including a cylindrical boring and two flanges with axial holes, two bushes are coaxial to the casing and connected to it by piers; an electric motor is set in each bush and its shaft is equipped by an impeller set inside the cylindrical boring. The casing consists of two parts; the first flange is fitted at the end face of the first casing part and the second one - of the second casing part. A bush with piers is placed in each casing part; the first flange is fitted with threaded holes; the flanges are contacting with each other and interconnected by screws screwed into the threaded holes and passing through the axial holes of the second flange with the screw heads being placed on the second flange side; the outer surface of the first casing part is cylindrical along the section from its free end face to the first flange and the first flange axial holes are projecting beyond the second flange outline.

EFFECT: ensuring repairability and increasing variety of the fan unit assembly patterns.

1 dwg

FIELD: electric engineering.

SUBSTANCE: invention relates to electric engineering, namely - to electric machines, and deals with the specific features of fixing elements design for electric motors, particularly, fan sets intended for heating, ventilation and/or air-conditioning plants. This invention proposes a device (40) for fixing electric motor (16) containing accommodating seat (41) for motor installation with a wall (42). According to the invention, the device (40) for fixing electric motor (16) implemented so that the first (18A) and second (18B) air pumping element can be rotated. The air pumping element includes accommodating seat (41) to install electric motor (16) and a wall (42). Besides, the obstructing elements (60, 62; 72, 74, 76; 80) are placed between the electric motor (16) and accommodating seat (41) wall (42). The obstructing elements are implemented so that they can obstruct air flowing between electric motor (16) and wall (42) of accommodating seat and air flow be redirected through electric motor (16).

EFFECT: improved cooling of electric motor and ensured control of different heating, ventilation and/or air conditioning equipment parameters.

21 cl, 9 dwg

Compression unit // 2455530

FIELD: machine building.

SUBSTANCE: compressor unit (1) comprises a compressor (5), a suction line (2) and a return line (3), a block (20) that controls the compressor (5). Moreover, in line (2) the suction is ensured by at least one device (21, 22) to detect amounts of non-gaseous fluid medium in the fluid to be compressed, on their way to the entrance to compressor (5), and detection device (21, 22) is connected to management block (20) ensuring signal transmission, and compressor unit (1) contains dissolution unit (30), which dissolves the amount of non-gas on its way to the entrance of compressor (5), while the dissolution is initiated when the amount of detected non-gaseous fluid exceeds a certain limit.

EFFECT: any damage caused by a number of non-gaseous fluid into the suction inlet to the compressor is excluded.

7 cl, 1 dwg

Fan // 2458254

FIELD: ventilation.

SUBSTANCE: vaneless fan 100 for creation of the air flow includes nozzle 1 installed on the housing of base 16 for creation of the air flow passing through it. Nozzle 1 has internal channel 10 for receiving the air from base 16 and outlet hole 12 through which the air flow is discharged. Nozzle 1 is essentially located orthogonally to the axis and forms hole 2 through which the air is injected from outer side of fan 100 due to the air flow leaving the outlet hole 12. Both nozzle 1 and base 16 have the depth in the direction of axis; at that, depth of base 16 does not exceed double depth of nozzle 1. As an alternative, fan 100 has the height measured from the end of base 16, which is the most distant from nozzle 1, to the end of nozzle 1, which is the most distant from base 16, and width which is perpendicular to the height. At that, both the height and the width are perpendicular to the axis, and width of base 16 does not exceed 75% of nozzle 1 width.

EFFECT: fan has compact design.

25 cl, 5 dwg

Fan // 2458255

FIELD: ventilation.

SUBSTANCE: vaneless fan includes nozzle 1 and device for creation of flow through it. Nozzle 1 has internal channel 10, outlet hole 12 for receiving the air flow from internal channel 10 and Koand surface 14 adjacent to outlet hole 12. The latter is located so that the air flow can be directed along that surface. Device for creation of the air flow through nozzle 1 is made in the form of impeller 30 brought into action with electric motor 22.

EFFECT: creation of more uniform air flow along the whole working surface of fan; more compact and safe design.

18 cl, 5 dwg

Blower assembly // 2460904

FIELD: engines and pumps.

SUBSTANCE: blower assembly 10 is designed to create air jet. Blower comprises outlet 14 arranged on bed. Said bed comprises outer housing 16 and case 64 of impeller 52 arranged in outer housing 16. Case 64 has air inlet 70 and air outlet and houses impeller 53 and its drive motor 56 to force airflow through case 64. Aforesaid outlet has inner chamber 86 to direct airflow from impeller case 64 and constricted section 26 for airflow to be forced out from blower 10. Flexible sealing element is arranged between outer housing 16 and case 64 of impeller 52.

EFFECT: reduced air loss and noise, increased airflow.

19 cl, 17 dwg

FIELD: machine building.

SUBSTANCE: proposed plant comprises housing accommodating motor stator with multiphase winding, compressor compression radial-flow stage flow section fixed elements, housing cover accommodating stator elements of plant rotor magnetic suspension system bearings, and plant rotor carrying rotor elements of bearings and compressor and motor rotary assemblies. Note here that motor stator magnetic core is made up of sections, their number complying with that of compression stages. Magnetically and electrically not conducting separation cylinders are arranged between said sections. Note here that stator winding is shared by all sections and laid in core section and separation cylinder grooves. Every integrated rotary assembly of compressor and motor comprises impeller. Said impeller inlet has guide channels to feed gas to impeller inlet while motor rotor section is located there outside. Note also that magnetic coupling between motor and rotor sections is ensured by fixed cylinders made from electrically nonconducting materials with built-in cores made up of thin stacks of radial plates of electric steel.

EFFECT: decreased overall dimensions.

2 cl, 2 dwg

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