Manual ice-driven tool

FIELD: engines and pumps.

SUBSTANCE: invention relates to hand-held devices driven by ICE. Proposed device comprises housing of engine (200) and ICE (202) with cylinder (204) and crankshaft. It incorporates fan wheel (214) driven by crankshaft to run about axle A. Fan casing (216) surrounds fan wheel (214) to interact therewith. Inlet (224) for air to be combusted is arranged radially outside fan wheel (214) to direct air to ICE (202) and has inlet (226) and channel (228). Inlet (226) has first edge (230) radially abutting on has wheel (214) outer periphery (220). Angle X between first line L1 extending radially from axle A parallel with the main direction of cylinder (204) and radius L2 extending radially from axle A so that to cross said first edge (230), is smaller than 70 degrees, preferably, smaller than 66 degrees and, more preferably, than 62 degrees. Invention covers the versions of hand-held device.

EFFECT: decreased weight.

20 cl, 6 dwg

 

ORANIA

DESCRIPTION

The technical field

The present invention relates to a manual operating device, such as, but without limitation, chain saw, garden scissors or trimmer, working device which receives the drive from the internal combustion engine. In particular, the present invention relates to the cooling of such internal combustion engine. In addition, the present invention relates to air purification system for an internal combustion engine.

The level of technology

Portable manual operating device driven by an internal combustion engine are well known in the art. When designing such a device, an important goal is a high power-weight. The limiting factor for improving the above-mentioned relationship is a possibility of cooling, which, therefore, need to improve.

Typically, the internal combustion engine housed in the motor housing of the working device, and the crankshaft of the internal combustion engine is connected with the working tool through an appropriate transmission mechanism. In addition, the internal combustion engine directly or indirectly drives a fan wheel or radial fan, and this radial fan provides ohla the decline in the internal combustion engine, in particular, aiming at the cooling fins of the cylinder of the internal combustion engine, the cooling air flow. Typically, the fan wheel interacts with the fan shroud, made in the form of a coil which surrounds the fan wheel. Fan wheel mounted directly or indirectly on the crankshaft of the internal combustion engine and, preferably, the fan wheel is rotating at the same speed as the crankshaft. Fan wheel made with the possibility of suction of air through its center and blowing air radially outward under the action of centrifugal force.

Preferably, the inlet for the air intended for combustion, is located radially near the fan wheels, and is used to direct air intended for combustion in the internal combustion engine. Before getting into the internal combustion engine, the flow of air intended for combustion passes through the air filter. The position of the inlet for air intended for combustion, radial near the fan wheel provides the possibility of using the advantages of the centrifugal force acting on the particles, for example dust particles in the air stream, so that the purified air stream enters the inlet for air, intended for garanito the use of centrifugal force is often called centrifugal cleaning. The purified stream of air intended for combustion, reduces the risk of clogging of the air filter and can extend the service intervals. A blocked air filter, in particular, is a problem in a dusty environment. The flow of air that does not flow into the intake air intended for combustion, preferably used for cooling internal combustion engine, and, in particular, for cooling the cylinder of the internal combustion engine. However, the problem with the described position of the inlet for air intended for combustion, is that it is located on the flow path of the cooling air and, therefore, can reduce the possibility of cooling.

In addition, there may be a deflector downstream of the inlet for air intended for combustion, and in close proximity to the periphery of the fan wheels. The deflector passes radially outward relative to the fan wheel and provides the direction of air flow from the fan wheels. This prevents a continuous circulation of air and particles in the fan wheel. If the air and the particles remained in the radial fan, would lower cooling capacity, because the fan would not have the opportunity to take this quantity of air, as required. However, the deflector increasing is that the complexity of the overall design of the centrifugal fan and the working of the device.

The invention

The first objective of the present invention is to provide an efficient cooling system sufficient air cleaning for an internal combustion engine hand operating device. Another objective of the present invention is to provide an efficient cooling system sufficient air cleaning for an internal combustion engine hand operating device with a simple design with a small number of components.

Manual operating device includes a motor housing and an internal combustion engine located in the engine casing. The internal combustion engine includes cylinder and crankshaft. Fan wheel directly or indirectly drives the crankshaft so that the fan wheel rotates around the axis A. moreover, a fan shroud, which surrounds the fan wheel and interacts with fan wheel for air intended for combustion, and/or cooling air to the engine. In addition, the intake air intended for combustion, is located radially outside the fan wheels and for directing air to the internal combustion engine. Moreover, the intake air intended for combustion, includes the CPG is to air, intended for burning, and the channel of the air intended for combustion. In the intake port for the air intended for combustion is provided by a first edge which is located radially near the outer periphery of the fan wheel.

At least, the first goal is achieved by a manual operating device described in the last paragraph and in paragraph 1 of the claims, in which the angle X between the first line L1, passing radially from the axis And in a direction parallel to the main direction of the cylinder, and the radius L2 passing radially from the axis And in such a direction that it intersects with the first edge is less than 70° , preferably less than 66° and even more preferably less than 62°, in which L1 and L2 are considering in the side view. Presents higher values of angle X imply that the disruption of the flow of cooling air is reduced in comparison with the solutions of the prior art, and can still be adequately cleaned and air intended for combustion. The decrease disruption of the cooling air flow means improved cooling ability.

In accordance with PP. 2 and 3, the angle X is less than 58° , preferably less than 54° and even more preferably less than 50°. In addition, the angle X is less than 46° , preferably less CEM° and even more preferably, less than 38°. These conditions are even more mean less disruption of the flow of cooling air and proved that still provide sufficient clearance and air flow intended for burning.

According to claim 4, the deflector is provided radially outside and in close proximity to the outer periphery of the fan wheel to the flow direction of air blown from the fan wheel, outside of the fan wheels. The deflector, at least, prevents the continuation of air circulation with a fan wheel. It provides what can be supported by the possibility of cooling. In addition, the deflector can be developed for guiding cooling air to areas where it is most needed, for example, in the direction of the cylinder or muffler.

According to paragraph 5, the intake air intended for combustion, and the deflector to form one single unit. This module allows air flow so that the flow of low-density particles could be directed into the inlet for air intended for combustion, and the flow of higher density particles can be used for cooling the cylinder and/or other engine parts. Due to the production of intake air intended for combustion and vent, in the form of one single m is the module, the number of parts of the fan shroud is reduced. This implies that the weight of the whole product can be reduced, and possible more simple design. Reduced number of parts, simplify the manufacturing process and probably reduces Assembly time. In addition, this solution involves generating lesser noise compared with the solutions of the prior art, since only one edge, instead of two will be located near the fan wheel. Thus, the blade wheel of the fan is held only by one edge per revolution of the fan wheels. In solutions of prior art, there are two distinct edges, the edges for the input of air intended for combustion, and the edge of the baffle, which means that the blade of the fan wheel passes by the two edges per revolution.

According to claim 6, additional cover fan shroud forms part of the fan shroud, so that at least part of the intake air intended for combustion, also forms one unit with the cover of the fan shroud. It also reduces the number of parts and simplify the manufacturing process and probably reduces the time to build. Of course, this also simplifies the disassembly of the radial fan.

In addition, according to paragraph 7, an internal combustion engine including the et in the crankcase, so that part of the intake air intended for combustion formed in said Carter.

According to paragraph 8, the cover of the fan shroud and the inlet for the air intended for combustion, made of plastic, and the intake air intended for combustion, formed by joining at least two parts by welding or gluing.

In addition, in accordance with subparagraph. 9 and 10, an inlet for air intended for combustion, also includes a second edge which is located further radially outside of the first edge relative to the fan wheel. The second edge is located on the same side as the fan wheel, relative to a tangent T, defined as the tangent to the radially outer periphery of the fan wheel, which intersects with the first edge. Such a location of the second edge is preferred to prevent particles of dust or other particles in the intake air intended for combustion, and still provides sufficient air pressure in the intake air intended for combustion, so that a sufficient amount of air can be taken in the internal combustion engine. In addition, at least some of the blades of the fan wheels each has its outer edge on p is referee fan wheels, so that at least one of the first and second edges is rejected, at least 5° and preferably at least 10°, and even more preferably at least 15° from parallel to the outer edge, at least one of the blades. Such configuration additionally reduce noise generated in a radial fan.

According to item 11, the engine includes a muffler with silencer box. The silencer box surrounds the muffler and the portion of the casing of the muffler also forms part of the fan shroud. This ensures efficient cooling of the muffler and enables weight saving, simple structure, a simplified manufacturing process and reducing Assembly time.

Under section 12, the section of the screen is provided in close proximity to the inlet for air intended for combustion. The area of the screen continues under the angular distance of at least 5° and preferably at least 10°, and even more preferably at least 15° relative to the axis A. In this configuration, the area of the screen prevents rebound of particles from the cylinder or from other components within the fan shroud, such as a silencer, and their subsequent penetration into the intake air intended for combustion. This improves the degree of air purification, before naznachennogo for combustion. If the area of the screen was not provided, then separated by centrifugal force of the particles changed direction due to collisions with various details could get into the intake air intended for combustion, and then would clutter the air filter. The benefits section of the screen is also evident for the angular distances of at least 20°, 25° or 30°. The area of the screen is preferably flat, but, of course, may vary.

According to item 13, at least one portion of the area of the screen deviates from a flat surface. It turned out to be very favorable for preventing rebound of particles and hit them in the intake air intended for combustion. In addition, the area of the screen may be formed so that it can direct the flow of air.

According to 14, the area of the screen also forms one unit with the inlet for air intended for combustion. In addition, under clause 15 of the manual operating device is a chain saw with a horizontal cylinder configuration. The vent/inlet air intended for combustion, as one module in combination with the configuration of a horizontal cylinder turned out to be preferred for efficient cooling of the cylinder and outlet of the muffler.

According to manual 17 operating the device the content is it the motor housing, and the internal combustion engine is in the engine casing. The internal combustion engine includes cylinder and crankshaft. The drive wheel fan is from the crankshaft, so that the fan wheel rotates around an axis A. the fan Shroud surrounds and communicates with the fan wheel. The inlet for air intended for combustion, is located radially outside and in close proximity to the periphery of the wheel of the fan for directing air to the internal combustion engine. The inlet for air intended for combustion contains an inlet for air intended for combustion, and a channel for air intended for combustion. The baffle is located radially outside and in close proximity to the periphery of the fan wheel, and the baffle directs the flow of air and particles blown from the fan wheels outwards, so that, at least, prevented from continuing circulation of air and particles from the fan wheel, in which the inlet for the air intended for combustion, forms a single unit with a deflector, and this module provides the opportunity to separate the air flow so that the flow of low-density particles may be directed into the inlet for air intended for combustion, and the flux is higher density particles can be used, for cooling the cylinder of the internal combustion engine. The above configuration not only provides efficient cooling and sufficient air purification system, but also a simple design with a small number of components. Reducing the number of components implies that the weight of the entire product can be reduced. This, of course, is preferred for portable manual operating devices, as the operator moves them, and they should be universal. A small number of components implies a simplified manufacturing process.

According to claim 19, the manual operating device comprises a motor housing. The internal combustion engine is located in the casing of the engine, and internal combustion engine includes cylinder and crankshaft. The fan wheel is driven directly or indirectly from the crankshaft, so that the fan wheel rotates around an axis A. the fan Shroud surrounds the fan wheel and interacts with it. The inlet for air intended for combustion, is located radially outside the fan wheels for directing air intended for combustion in the internal combustion engine. The inlet for air intended for combustion contains an inlet for air, designed for mountain which I and a channel for air intended for combustion. In the inlet opening for the air intended for combustion is provided by the first edge and the first edge is located radially near the periphery of the fan wheel, and the first edge is located at a radial distance d1 from the axis And along the radius L2, continuing in the radial direction from the fan wheels and intersecting with the axis A and the first edge, in which the distance d2 between the first edge and the fan shroud along the radius L2 is at least 0,65d1 and preferably at least 0,7d1, and even more preferably at least, 0,75d1. Such conditions for d2 imply that the cooling air flow will not be significantly disturbed by the intake air intended for combustion, since the cross-sectional area of the cooling air flow is slightly reduced in the presence of intake air intended for combustion. This allows for good cooling. Large values of d2, such as, at least, 0,8d1, 0,85d1 or 0,9d1, are even more useful for cooling efficiency.

It should be noted that the overall technical result of the claimed group of inventions is to reduce the weight of the manual operating device (that is paramount dalubhasa hand tools), the inlet for air intended for combustion, is not in the path of flow of the cooling air so that it does not have a negative impact on the flow of cooling air is directed into the cylinder, which in turn allows you to implement a good centrifugal cooling air intended for combustion, as well as cylinder engine that actually improves the ratio power/weight engine manual operating device.

Other advantages of the present invention will be apparent from the detailed description of the invention.

Brief description of drawings

In the following description of a preferred variant of the embodiment will be made by reference to the accompanying drawings, on which:

figure 1 - chain saw in accordance with an exemplary embodiment of the present invention;

figa is a partial side view of the casing of the engine of the chain saw in accordance with the embodiment of the present invention;

FIGU is a partial side view of the casing of the engine, in accordance with another embodiment of the present invention;

figure 3 - side view of the casing of the engine, in accordance with the embodiment of the present invention;

figure 4 - different components cover fan shroud, in accordance with the embodiment of the present invention; and

figure 5 - integrated cover casing ve is tilator, in accordance with the embodiment of the present invention.

Detailed description of preferred embodiments of the invention

The present invention will be described more fully below with reference to the attached drawings showing exemplary embodiments of the invention, including one or more aspects of the present invention. This invention may be embodied in many different forms and should not be construed as limited options for implementation presented herein; rather, these embodiments of provided so that this disclosure is thorough and complete and fully convey the scope of invention to a person skilled in the art. For example, one or more aspects of the present invention can be used in other embodiments, implementation and even in other types of devices. In the drawings, the same reference positions denoted by the same elements.

Figure 1 illustrates the chain saw 100 in accordance with an exemplary embodiment of the present invention. Although in the exemplary embodiment shown in figure 1, showing the chain saw 100, the specialist in the art should understand that the present invention can be embodied in any appropriate type of portable ru is tion of the working device and not restricted to using only the chainsaw 100. In addition, the present invention can be implemented in various types of embodiments of different types of manual operating devices, which may include brush cutters, circular saws, suction/blowing device, etc.

As shown in figure 1, the chain saw 100 includes a housing 102 and a work node 104. The housing 102 includes a casing for the engine, which surrounds the internal combustion engine (below called "engine") and the transfer site. In various other embodiments, implementation of the present invention, the engine may be a two-stroke internal combustion engine or a four-stroke internal combustion engine. In addition, the casing of the motor can be modular or joint design, without deviating from the scope of the present invention. In the embodiment of the present invention, the housing 102 may further include a side cover 106. In the embodiment of the present invention, the side cover 106 is a separate component attached to the motor housing. In another embodiment of the present invention, the side cover 106 is formed as a single piece with the motor housing. In addition, the side cover 106 includes multiple inlets 108 for air, which allow ambient air to different omponents engine.

In addition, the housing 102 also includes a top handle 110 and the side handle 112. However, there are other types of configurations of the handle, for example, the configuration of the rear handle. At least one of the upper handle 110 and the side of the handle 112 may include areas of engagement, providing the opportunity to work manually with a chain saw 100. In addition, may provide protection 114 to protect the user from fast moving working node 104 during the cutting operation.

As shown in figure 1, in accordance with the embodiment of the present invention, a work node 104 includes a bus 116. Circuit (not shown) is held in a peripheral guide groove bus 116, and the guide groove can be made continuous or with breaks. During operation, the motor drives the chain through the transfer site. In various embodiments, implementation of the present invention, the transmission nodes may include at least one of, for example, but without limitation, one or more toothed wheels, one or more friction elements, one or more belt drives, or a combination of any of them.

On figa illustrates a partial side view of the casing 200 of the engine of the chain saw 100, in accordance with the embodiment of the present invention. The various components of the chain saw 100 includes Bo the new cover 106, not shown in figa for the purpose of illustration. The casing 200 of the engine around the engine 202. In addition, the engine 202 includes a cylinder 204 and the crankcase (not shown). However, the engine 202 may include two or more cylinders, without going beyond the essence of the present invention. As shown in figa, the main direction of the cylinder 204 is oriented essentially in the horizontal direction (below called configuration with a horizontal cylinder) within the casing 200 of the engine. However, there are various other orientations of the cylinder 204 within the scope of the present invention. The cylinder 204 includes an opening 206 of the cylinder in which the piston 208 performs a reciprocating motion. In addition, the combustion of the fuel-air mixture in the chamber 210 of the combustion drives the piston 208. The piston 208 is connected to the crankshaft (not shown) through a connecting rod (not shown). After ignition of the fuel-air mixture, exhaust gases out of the cylinder 204 and pass through the outlet of the engine 202. In the embodiment of the present invention, the housing 212 of the muffler is provided around the exhaust channel to substantially reduce the noise generated by the exhaust gases.

In the embodiment of the present invention the wheel 214 fan is located inside the casing 216 fan. In a variant implementation of the of the present invention the wheel 214 fan is an impeller of a centrifugal fan. Wheel 214 of the fan is made with a possibility of as air intended for combustion in the engine 202 and the cooling air to the various components of the engine 202, for example, but without limitation, to the cylinder 204 and the casing 212 of the muffler. Wheel 214 fan made with the possibility of rotation, essentially, around the axis A. in Addition, the housing 216 of the fan has an essentially spiral shape that helps the wheels 214 fan. In the embodiment of the present invention the casing 216 fan has a separate component that is attached to the casing 200 of the engine. In another embodiment of the present invention the casing 216 fan formed as a single piece with the casing 200 of the engine. In the embodiment of the present invention, at least a section of casing 212 muffler forms part of the casing 216 fan.

In accordance with the embodiment of the present invention, the wheel 214 fan mounted directly on the crankshaft so that the rotation speed of the wheel 214 fan can essentially be equal to the speed of rotation of the crankshaft. However, in various other embodiments, implementation of the present invention, the wheel 214 indirectly fan is driven via the crankshaft through one or more intermediate to the of mponents, for example, but without limitation, one or more gear wheels, friction drive, belt drive, or a combination. In this case, the rotation speed of the wheel 214 fan, essentially, equal to or different from the speed of rotation of the crankshaft. In the embodiment of the present invention the wheel 214 fan includes many blades 218. As shown in figa, blades 218, essentially, are S-shaped, and each of the blades 218 extends to the radially outer periphery 220 (below called "periphery 220") wheel 214 fan. It is possible that not all blades continue to the outer periphery 220. At least some of the blades 218 each include an outer edge 222 that is located near the periphery 220 of the wheel 214 fan. To a person skilled in the art will understand that any other shape, number and configuration of the blades 218 are possible without going beyond the essence of the present invention.

In the embodiment of the present invention the inlet 224 of the air is located radially outside of the wheel 214 fan. The inlet 224 to the air intended for combustion, includes hole 226 intake air intended for combustion, and the channel 228 for air intended for combustion, to supply air intended for combustion in engines is spruce 202. One or more elements of the filter and/or a camera (not shown) provided between the inlet 224 to the air intended for combustion, and the engine 202. In addition, in the embodiment of the present invention, the inlet 224 to the air intended for combustion, is connected with the crankcase of the engine 202 to supply air intended for combustion in the engine crankcase.

In accordance with the embodiment of the present invention, the hole 226 intake air intended for combustion, includes a first edge 230 and the second edge 232. The first edge 230 is located near the periphery 220 of the wheel 214 fan. In addition, the second edge 232 is then radially outside of the first edge 230 relative to the periphery 220 of the wheel 214 fan. The first 230 and second 232 or edges are not parallel. Of course, the inlet 226 for air intended for combustion, can have other shapes, such as, for example, but without limitation, circular or elliptical. Preferably, the first edge 234 is made straight, but it may have various shapes, such as curved shape. She may even have a zigzag shape. The position of the first edge 230 is best illustrated in the side view in cross section perpendicular to the axis A, such as figa.

As shown in figa, is erva line L1 passes radially from the axis And in the direction essentially parallel to the main direction of the cylinder 204. In addition, the radius L2 continues radially from the axis A so that the radius L2 intersects the first edge 230 holes 226 intake air intended for combustion, with the first edge 230 is visible in the side view in cross-section, as figa. In the embodiment of the present invention, the angle X between the first line L1 and the radius L2 is less than about 70°, preferably less than about 66°, and more preferably, less than about 62°, where X can be seen in the side view in cross-section. In another embodiment of the present invention, the angle X is less than about 58°, preferably less than about 54°, and still more preferably, less than about 50°. In yet another embodiment of the present invention, the angle X is less than about 46°, preferably less than about 42°, and more preferably, less than about 38°. Such configuration ensures that the cooling air flow will be very small influence on inlet side to the air intended for combustion.

In addition, as shown in figa, the tangent T is defined as the tangent line to the periphery 220 of the wheel 214 of the fan, which peresekaetsya first edge 230. In the embodiment of the present invention, the second edge 232 is located on the same side as the wheel 214 of the fan relative to the tangent line T. This configuration proved to be very useful from the point of view of the clean air intended for combustion. In addition, in accordance with the embodiment of the present invention, the first edge 230 is deflected at an angle of at least about 5°, preferably at least about 10°, and even more preferably at least about 15° from parallel to the outer edge 222, at least one of the blades 218. This decreases the noise generated by a radial fan.

On FIGU illustrates a partial side view of the casing 200 of the engine in accordance with another embodiment of the present invention. As shown in figv, the first edge 230 is located at a radial distance d1 from the axis A. the Radial distance d1, in essence, is installed along the radius L2. In the embodiment of the present invention, the distance d2 between the first edge 230 and the housing 216 of the fan along the radius L2 is at least 0,65d1, preferably at least 0,7d1, and even more preferably at least 0,75d1. In another embodiment of the present invention, the distance d2 is at least 08d1, preferably at least 0,85d1, and even more preferably at least 0,9d1. Such conditions for d2 imply that the cross-sectional area of flow of the cooling air will be great in the position of the inlet for air intended for combustion, as compared with solutions of prior art. Thus, the cooling air flow to a small extent be influenced by the intake air intended for combustion. It turned out to be very preferred from the viewpoint of cooling capabilities.

In addition, in the embodiment of the present invention, as shown in figa and 2B, section 234 of the screen is located in close proximity to the hole 226 intake air intended for combustion. Section 234 of the screen is preferably flat, but not necessarily, and continues at an angular distance of at least about 5°, preferably at least about 10°, and even more preferably at least about 15° relative to the axis A. in Addition, the angular distance can be at least 20°, 25° or 30°. In the embodiment of the present invention, at least one outlet section 235 (see, in particular, figure 4 or 5) of section 234 of the screen deviates from a flat surface. Section 234 of the screen, at least casticin which prevents the ingress of particles in the separated air stream, which bounce off of the cylinder 204 (or other parts inside the fan shroud, or in other places), in the inlet 224 of the air intended for combustion. Protection of inlet 224 to the air intended for combustion, such particles bounce proved to be an effective way to improve the purification of air intended for combustion. In the embodiment of the present invention, the section 234 of the screen and the inlet 224 to the air intended for combustion, to form one single unit. Of course, many different possible configurations of section 234 of the screen. Preferably, the section 234 of the screen partially surrounds the air inlet 224 to the air intended for combustion. Preferably, at least part or the main part of section 234 of the screen is parallel to the plane perpendicular to the axis A.

Figure 3 illustrates a side view of the casing 200 of the engine, in accordance with the embodiment of the present invention. As shown in figure 3, the cover 302 of the fan shroud is located on top of the casing 216 fan. In the embodiment of the present invention, the cover 302 of the fan shroud forms part of the casing 216 fan. In addition, at least part of the inlet 224 to the air intended for combustion, and the cover 302 of the fan shroud form a single module.

The deflector 304 is positioning radially outside and in close proximity to the periphery 220 of the wheel 214 fan. The deflector 304 is configured to direct the flow of air and particles blown from the wheel 214 of the fan away from the fan wheel, thereby, without limitation, radially outward, and thus, at least, preventing air recirculation and possibly particles in the wheel 214 fan. In the embodiment of the present invention the deflector 304 can be part of the cover 302 of the fan shroud (see figure 4 and 5).

As shown in figa, 2B and 3, during operation of the chain saw 100, the wheel 214 fan rotates for sampling ambient air through multiple inlets 108 provided in the side of the lid 106. However, to a person skilled in the art it is obvious that the air can get through any other holes in the housing 102. The ambient air may contain impurities in the form of particles, for example, but without limitation, sawdust, dirt, debris, etc. the rotation of the wheel 214 fan provides, essentially, centrifugal cleaning the surrounding air. Due to the centrifugal force, the flow of high-density particles can be divided into the stream with a low density of particles. In addition, the configuration of the inlet 224 of the air intended for combustion and vent 304, in the form of a single module, ensures that the flow of low-density particles may flow into the inlet opening 226 for air, intended for combustion as the air intended for combustion, while the flow with a high density of particles can be used for cooling the cylinder 204. In fact, the inlet 224 of the air intended for combustion, and the deflector 304, forming one single unit, proved to be very advantageous because, as is evident from the preceding description, one such module performs at least two tasks, such as separating the flow of air intended for combustion, air flow cooling, and the direction of flow from the fan wheel. The deflector may also be designed in such a way that he was directing the cooling air flow direction, for example, of the cylinder (and/or in the direction of other parts of the engine requiring cooling) of the internal combustion engine.

In the embodiment of the present invention, this type of arrangement of the inlet 224 to the air intended for combustion and vent 304 is especially suitable for the configuration of the horizontal cylinder.

Figure 4 shows the various components of the cover 302 of the fan shroud, in accordance with the embodiment of the present invention. As shown in figure 4, the cover 302 of the fan shroud includes a first portion 402 and second portion 404 of the inlet 224 to the air intended for combustion. Variance implementation of the present invention, the section 234 of the screen is made, as a single part with the second part 404. However, in various other embodiments, implementation of the present invention, the section 234 of the screen is made as a single part, the first part 402 inlet 224 to the air intended for combustion, or is a separate component. To a person skilled in the art it will be clear that the cover 302 of the fan casing may have any other monolithic or modular in design within the scope of the present invention. In addition, the second part 404 is attached to the first part 402 using a variety of processes, for example, but without limitation, welding, brazing, gluing, etc. This configuration of the cover 302 of the fan shroud simplify the manufacturing process and results in a more compact structure with a reduced number of parts.

Figure 5 illustrates the integrated cover 302 of the fan shroud, in accordance with the embodiment of the present invention. As shown in figure 5, the cover 302 of the fan housing includes an inlet 224 to the air intended for combustion, the deflector 304 and section 234 of the screen. The integration of all these components in the cover 302 of the fan shroud simplify the manufacturing process and probably reduces Assembly time. In one embodiment of the present invention one or more of the company the components of the cover 302 of the fan casing is made of plastic. However, as obvious to a person skilled in the art, one or more components of the cover 302 of the fan shroud can be made of any other appropriate material, for example, but without limitation, metal, composite material, etc.

The drawings and description have been disclosed preferred embodiments of, and examples of the invention and, although there are specific terms, they are used only in a generic and descriptive sense, and not to limit the scope of the invention in the following claims.

1. Manual operating device, comprising:
the casing (200) of the engine;
engine (202) internal combustion engines located in the casing (200) of the engine and containing a cylinder (204) and the crankshaft;
wheel (214) fan driven directly or indirectly to the crankshaft so that the wheel (214) fan rotates about an axis A;
cover (216) fan, surrounding and interacting with the wheel (214) fan;
inlet (224) for air intended for combustion, located radially outside of the wheel (214) fan for directing air to the engine (202) internal combustion engines, the intake (224) for air intended for combustion contains an inlet opening (226) for air intended for combustion, and the channel (228) on the I air intended for combustion;
while in the input hole (226) for air intended for combustion is provided by the first edge (230), and the first edge (230) radially adjacent to the outer periphery (220) of the wheel (214) fan, characterized in that the angle X between the first line L1, passing radially from the axis And in a direction parallel to the main direction of the cylinder (204), and the radius L2 passing radially from the axis And in such a direction that it intersects with the first edge (230), less than 70°, preferably less than 66° and even more preferably less than 62°.

2. Manual operating device according to claim 1,characterized in thatthe angle X is less than 58°, preferably less than 54° and even more preferably less than 50°.

3. Manual operating device according to claim 2,characterized in thatthe angle X is less than 46°, preferably less than 42°, and even more preferably less than 38°.

4. Manual operating device according to any one of claims 1 to 3,characterized in thatdeflector (304) is located radially outside and directly near the outer periphery of the (220) of the wheel (214) fan flow direction of air blown from the wheel (214) fan out from the wheel (214) fan to at least prevent further air circulation together with the wheel (214) fan.

5. Manual operating device according to claim 4,different those who, thatinlet (224) for air intended for combustion, forms a single unit with deflector (304), and the module provides the possibility of separating the air flow in the casing (216) of the fan so that the flow of low-density particles could be directed into the inlet (226) for air intended for combustion, and the flow of higher density particles can be used for cooling at least a cylinder (204) of the motor (202) internal combustion engines.

6. Manual operating device according to any one of claims 1 to 3 or 5,characterized in thatcover (302) fan shroud forms part of the casing (216) fan and at least part of the inlet (224) for air intended for combustion, also forms one module with cover (302) of the fan shroud.

7. Manual operating device according to claim 6,characterized in thatengine (202) internal combustion contains a crankcase and a part of the intake (224) for air intended for combustion formed in said Carter.

8. Manual operating device according to claim 6,characterized in thatcover (302) of the fan shroud and the inlet (224) for air intended for combustion, are made of plastic and the inlet (224) for air intended for combustion, formed by joining at least two parts (402, 404) by welding or gluing.

9. The manual is only half the operating device according to any one of claims 1 to 3, 5, 7, or 8,characterized in thatin the input hole (226) for air intended for combustion, there is a second edge (232), which is located downstream and radially outside of the first edge (230) relative to the wheel (214) fan, and the second edge (232) is located on the same side as the wheel (214) of the fan relative to a tangent T, defined as the tangent to the radially outer periphery (220) of the wheel (214) fan, which intersects with the first edge (230).

10. Manual operating device according to claim 9,characterized in thatwheel (214) fan includes blades (218) and each of at least some of the blades (218) has an outer edge (222) on the periphery (220) of the wheel (214) fan, and at least one of the first and second edges (230, 232) deviates by at least 5°, preferably at least 10° and even more preferably at least 15° from parallel to the outer edge (222) at least one of the blades (218).

11. Manual operating device according to any one of claims 1 to 3, 5, 7, 8, or 10,characterized in thatin the engine (202) internal combustion engines includes a muffler and land cover (212) muffler also forms part of the casing (216) fan.

12. Manual operating device according to any one of claims 1 to 3, 5, 7, 8, or 10,characterized in thatplot (234) screen is located in C the immediate proximity to the inlet (226) for air, intended for combustion, and the plot (234) screen preferably is held at an angular distance of at least 5°, preferably at least 10° and even more preferably at least 15° relative to the axis A.

13. Manual operating device according to item 12,characterized in thatat least the plot (235) plot (234) screen deviates from a flat surface.

14. Manual operating device according to item 12,characterized in thatplot (234) screen forms one unit with the inlet (224) for air intended for combustion.

15. Manual operating device according to any one of claims 1-3, 5, 7, 8, 10, 13 or 14characterized in thatit is a chain saw (100) with a horizontal cylinder configuration.

16. Manual operating device according to any one of claims 1-3, 5, 7, 8, 10, 13 or 14characterized in thatthe first edge (230) is located at a radial distance d1 from the axis And along the radius L2 and the distance d2 between the first edge (230) and the casing (216) fan along the radius L2 is at least 0,65dl, preferably at least 0,7dl, and even more preferably at least 0,75dl.

17. Manual operating device, comprising:
the casing (200) of the engine;
engine (202) internal combustion engines located in the casing (200) of the engine and containing a cylinder (204) and the crankshaft;
wheel (214) fan, driven on iunie crankshaft so, that wheel (214) fan rotates about an axis A;
cover (216) fan, surrounding and interacting with the wheel (214) fan;
inlet (224) for air intended for combustion, located radially outside of and in close proximity to the periphery (220) of the wheel (214) fan for directing air to the engine (202) internal combustion engines, the intake (224) for air intended for combustion contains an inlet opening (226) for air intended for combustion, and the channel (228) for air intended for combustion;
deflector (304)that is located radially outside and in close proximity to the periphery (220) fan wheels (214), which directs the flow of air and particles blown away from the wheel (214) fan out of the fan wheels, so that at least prevents the continued flow of air and particles from the wheel (214) fan,characterized in thatinlet (224) for air intended for combustion, forms a single unit with deflector (304), and this module provides the opportunity to separate the air flow so that the flow of low-density particles may be directed into the inlet (224) for air intended for combustion, and the flow of higher density particles can be used for cooling at least Qili the DRA (204) of the motor (202) internal combustion engines.

18. Manual operating device 17,characterized in thatin the input hole (226) for air intended for combustion is provided by the first edge (230), which is located radially near the outer periphery (220) of the wheel (214) fan, and the angle X between the first line L1, passing radially from the axis And in a direction parallel to the main direction of the cylinder (204), and the radius L2 passing radially from the axis And in such a direction that it intersects with the first edge (230), less than 70°, preferably less than 66° and even more preferably less than 62°.

19. Manual operating device, comprising:
the casing (200) of the engine;
engine (202) internal combustion engines located in the casing (200) of the engine and containing a cylinder (204) and the crankshaft;
wheel (214) fan driven directly or indirectly to the crankshaft so that the wheel (214) fan rotates about an axis A;
cover (216) fan, surrounding and interacting with the wheel (214) fan;
inlet (224) for air intended for combustion, located radially outside of the wheel (214) fan for directing air to the internal combustion engine, and the intake (224) for air intended for combustion contains an inlet opening (226) for air intended for combustion, and the channel (228) for air intended for combustion;
while in the input hole (226) for air intended for combustion is provided by the first edge (230), which is located radially near the outer periphery (220) of the wheel (214) fan, and the first edge (230) is located at a radial distance d1 from the axis And along the radius L2, passing in the radial direction of the wheel (214) fan, with radius L2 intersects the axis a and the first edge (230),characterized in thatthe distance d2 between the first edge (230) and the casing (216) fan along the radius L2 is at least 0,65dl, preferably at least 0,7dl, and even more preferably at least 0,75dl.

20. Manual operating device according to claim 19,characterized in thatthe distance d2 is at least 0,8dl, preferably 0,85dl and even more preferably at least 0,9dl.



 

Same patents:

FIELD: transport.

SUBSTANCE: proposed system for connection of car pipes comprises union 26, sealing adapter 22 of, mainly tubular shape, arranged radially outward from union 26 and seal element 24 covering outer side of said union 26 to seal it relative to adapter 22. Sealing element 24 has intake pocket 30 to receive connection adapter 22 and clamp 28 to retain said element 24 radially inward on connection adapter 22. The latter cab flex radially and comprises at least one spline arranged, mainly, axially. Invention discloses suction air duct of ICE using described sealing system.

EFFECT: simplified assembly.

10 cl, 3 dwg

FIELD: engines and pumps.

SUBSTANCE: air pipeline passes from boost air device on one longitudinal side of internal combustion engine to air-distributing device on the other longitudinal side. One of boost air pipeline sections passes through ICE attachment bracket installed on the side. Boost air cooler is located between those devices. Sections (6e, 7e) of boost air pipeline are integrated to attachment brackets (6, 7) provided on both longitudinal sides of internal combustion engine. Boost air cooler (13) is attached to mounting flanges (6h, 7h) of both engine attachment brackets (6, 7) and interacts with integrated sections (6e, 7e) of boost air pipeline (10).

EFFECT: easy erection and reduction of weight is provided.

10 cl, 6 dwg

FIELD: engines and pumps.

SUBSTANCE: invention relates to engine production, particularly to internal combustion engine feed system. Air feed device comprises pipelines, intake and exhaust valves (11, 12), and check valves (7, 50). Proposed device differs from known designs in that it incorporates pneumatic accumulator (2) with piston (4) and spring (5), assembly of ejectors (33) comprising ejectors (45, 46, 47, 48) arranged coaxially, one above the other, in subpiston space (44) of aforesaid pneumatic accumulator (2). It comprises also pipeline (24) to feed waste gases in said assembly of ejectors and assembly of valves (21) to control operation of pneumatic accumulator (2) with valve (22) that communicates pneumatic accumulator subpiston space (44) with assembly of ejectors (33) via flap valves (39, 40, 41), and with valve (25) that communicates air cleaner (1) with aforesaid subpiston space. Note that adjusting shims (49) are fitted on one end face of pneumatic accumulator spring.

EFFECT: efficient and reliable air feed device.

2 dwg

FIELD: engines and pumps.

SUBSTANCE: invention is related to propulsion engineering, in particular to units from internal combustion engine components fixed by adhesive. Method for manufacture of inlet header for automobile engine consists in the fact that inlet header of engine is provided, which form air channel; the first part of inlet header body is provided from the first material; the second part of inlet header body is provided from the second material. The second part of header includes fixation of throttle gates body, cylinder covers, cylinder cover flange. The first and second parts are connected by adhesive to create unit of engine inlet header.

EFFECT: reduced labour-intensiveness of assembly and increased accuracy.

14 cl, 7 dwg

FIELD: mechanical engineering; internal combustion system.

SUBSTANCE: according to proposed method of silencing exhaust noises of internal combustion engine provided with intake system with throttle valve, exhaust gas fluctuations are reduced by delivering air into gas-air duct after throttle valve, air being fed as into intake system of engine after throttle valve at its closing. Intake system of internal combustion engine has air cleaner, carburetor, throttle valve, intake manifold, control device and valve communicating intake manifold, after throttle valve at sharp closing of throttle valve, with source of additional air. Electromagnetic valve is used for this purpose, and control device is made in form of control unit of override-duty economizer.

EFFECT: increased efficiency of noise silencing owing to prevention of back flows in exhaust system.

2 dwg

FIELD: mechanical engineering; manufacture of engines.

SUBSTANCE: proposed unit of engine intake manifold contains first member with corresponding first mating surface and second member with corresponding second mating surface. Unit contains also binding also binding material coming in contact with first mating surface and with second mating surface for connecting first and second members to form intake manifold of engine, and mechanical fastener, in additional to blinding material, for connecting first and second members. First mating surface and second mating surface, as a whole, are not flat. First member, second member or both members are made of polyamide with glass fiber filler. Epoxy resin is used as binding material. No sealing gasket is used in proposed joint. Thickness of cross section of joint is less than 7 mm.

EFFECT: provision of connection of complex-shape components and high strength of joint.

10 cl, 5 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: according to proposed method, part of air is directed to engine through additional parallel circuit, fuel from supply system is fed into additional circuit in which formation of mixture takes place, fuel-air mixture is fed into channels of air circuit near intake valves where it is additionally turbulized and atomized, and control of power and parameters of flow at cylinder input is provided by combined operation of gates of air and additional circuits and control of angles of delivery of flow of additional circuit relative to flow of air circuit. According to other method, part of air flow is directed through additional parallel circuit, fuel from supply system is delivered into engine cylinders where formation of mixture takes place, air from additional circuit is delivered into channels of air circuit near intake valves where swirling is provided, and control of power and parameters of flow at cylinder input is provided by combined operation of gates of air and additional circuits and control of angles of delivery of flow of additional circuit relative to flow of air circuit. Device for implementing said methods is described in invention.

EFFECT: increased economy, decreased toxicity of engine exhaust gases.

13 cl, 6 dwg

FIELD: mechanical engineering; automotive industry.

SUBSTANCE: proposed air supply system of internal combustion engine has air cleaner with air intake and air duct connecting cleaner with engine. Hole made in air duct is connected by hose with branch pipe of resonating chamber. Insert in form of pipe projecting into resonating chamber is installed in branch pipe of resonating chamber. Insert is installed for changing value of its projecting.

EFFECT: reduction intake noise to required value.

2 cl, 3 dwg

The intake manifold // 2243405
The invention relates to engine, and specifically to the construction of the intake manifolds of internal combustion engines with spark ignition

The invention relates to engine, in particular to the intake systems of internal combustion engines

FIELD: engines and pumps.

SUBSTANCE: device includes air duct (10) enveloping the impeller installed to move inlet air around its axis; at that, inner surface (11) of air duct is arranged so that inlet air moved with impeller can be directed; and air branch pipe (20) for cleaning of inlet air, which is arranged on inner surface (11) of air duct (10) radially near impeller; at that, air branch pipe (20) serves as overflow channel for movement of cleaned inlet air from impeller to the motor of the tool; at that, air branch pipe (20) and air duct (10) are made in block.

EFFECT: owing to air branch pipe and air duct in the form of one part the reliable cleaning of air is reached, and at the same time, manufacturing and assembly process will be economic and reliable.

19 cl, 5 dwg

FIELD: engines and pumps.

SUBSTANCE: proposed aspiration system is intended for ICE including air intake and combustion products discharge at increased temperatures. Engine comprises air pre-cleaner communicated with engine air intake and arranged upstream thereof. Said air pre-cleaner prevents an ingress of coarse contaminants in engine air intake and their accumulation. Said air pre-cleaner has outlet for contaminants. Aspiration system comprises the element that makes a primary engine exhaust gas primary flow channel. Said element has section of Venturi pipe and pipe with outlet nearby Venturi pipe section. The latter is communicated with pre-cleaner contaminants outlet to allows their injection in and through said pipe. Said element has at least one ambient air inlet into primary flow channel for exhaust gas cooling nearby said element.

EFFECT: better removal of contaminants.

7 cl, 2 dwg

FIELD: engines and pumps.

SUBSTANCE: primary air cleaner comprises air inlet and outlet, gauze filter to entrap dirt, outlet and inlet surfaces, jacket nearby gauze filter outlet surface, fan arranged in said jacket to force air through gauze filter pores, first and second cyclone filters. First cyclone filter has air inlet and outlet, and purge channel. Said air inlet is arranged nearby gauze filter outlet surface while purge channel communicates with jacket. Second cyclone filter has air inlet and outlet, and purge channel. Second cyclone filter air inlet communicates with first cyclone filter air outlet. Second cyclone filter air outlet communicates with ICE air inlet. Invention covers also ICE design and that of harvester.

EFFECT: improved air cleaning.

19 cl, 4 dwg

FIELD: mechanical engineering; internal combustion engines.

SUBSTANCE: proposed two-stage air cleaner of internal combustion engine contains cyclone device in its first cleaning stage assembled of separate cyclones built into tube plates. Each cyclone has housing with inlet branch pipe and outlet pipe. Cassettes are installed in series in second stage. Housings of cassettes are filled up with corrugated wire differing in density for each cassette, and dust suction hopper and outlet branch pipe are provided. Cyclones is cyclone device are made with ratio of diameters of outlet branch pipe and outlet pipe (D1/d1) equal to 1.6. Distance h from axis of projections on surface to cut is within 6.7-7.5 mm. Outlet edges of outlet branch pipe and outlet pipe at building-in into tube plates are made in form of arc of circumference, radius R=1.5-2.5 of wall thickness. Cyclone device is divided into two sections with formation of intersection space where pitch of cyclones in each section is 1.06-1.09 of outer diameter of cyclone housing, and distance between cut of outlet pipe of each cyclone and lower plane of air inlet into first of two cassettes of second cleaning stage is not less than 1.4 of diameter of cyclone outlet pipe. Dust suction hopper is provided with stamping, being made with tilting in direction of dust at suction.

EFFECT: increased time of operation of air cleaner to maximum restriction, reduced dust escape factor.

4 dwg

The invention relates to the automotive industry, and can improve the efficiency and acceleration performance of the vehicle through the use of cleaner with heated air

The invention relates to mechanical engineering and can be used for air purification in internal combustion engines

The invention relates to mechanical engineering and can be used in the propulsion devices for air purification with ionizers

Air cleaner // 2141572
The invention relates to mechanical engineering and can improve the cleaning efficiency of the air entering the cylinders of the internal combustion engine

The invention relates to mechanical engineering and can be used for air purification in internal combustion engines

Cyclone // 2099576
The invention relates to the field of engineering, mainly to engine, and can be used in air cleaners for internal combustion engines or to remove dust from air emissions of various industries
Up!