CN221323429U

CN221323429U - Exhaust valve and compressor

Info

Publication number: CN221323429U
Application number: CN202322794434.0U
Authority: CN
Inventors: 李奇杰
Original assignee: Anhui Jiebo Hengchuang Aviation Technology Co ltd
Current assignee: Anhui Jiebo Hengchuang Aviation Technology Co ltd
Priority date: 2023-10-17
Filing date: 2023-10-17
Publication date: 2024-07-12
Anticipated expiration: 2033-10-17

Abstract

The utility model discloses an exhaust valve and a compressor, wherein the exhaust valve comprises a main body, an elastic piece and a shell, the main body comprises a valve seat and a valve body which is formed by integrally extending upwards from the valve seat, an air inlet is arranged at the bottom of the valve seat, the valve body forms a cylinder shape and an inner flow channel inside, an air outlet is arranged at the side part of the valve body, the inner flow channel is in fluid communication with the air outlet, the elastic piece is arranged at the outer side of the air outlet and is used for controlling the opening and closing of the air outlet and the air flow, the shell is arranged on the valve seat and forms an outer flow channel between the outer wall of the valve body and the inner wall of the shell, the elastic piece comprises a fixing part and an elastic piece, the fixing part is fixed at the top of the valve body, and the elastic piece is arranged at the outer side of the air outlet and is elastically connected with the fixing part. According to the utility model, through the design of the exhaust path and the structure of the elastic piece, the movement stroke of the elastic piece is reduced, the compression rate of the elastic piece is reduced, the stress level is reduced, and the fatigue is reduced, so that the technical effect of prolonging the service life of the valve is achieved.

Description

Exhaust valve and compressor

Technical Field

The utility model relates to the field of valves, in particular to an exhaust valve and a compressor.

Background

The air outlet valve is used as an important pneumatic part, and plays an important role in controlling the air outlet pressure, stopping countercurrent (reducing vibration noise of power equipment), improving the starting speed of the power equipment and the like. The problem of fracture failure under the combined action of high-cycle fatigue and thermal fatigue, deformation and seizure caused by thermal expansion of components at high temperature and the like of the air outlet valve, particularly the high-speed air outlet valve, is a key failure mode of the valve because the elastic moving component is subjected to high-frequency impact of high-temperature fluid. The structural design and the materials used are not matched with the power equipment in operation, so that the service life of the air outlet valve is often far lower than that of the machine, and therefore, the air outlet valve is often a decisive factor for the maintenance period of the power equipment.

The Wankel compressor has small volume, simple structure and longer service life than the piston compressor; meanwhile, the gas transmission density is high, the gas transmission times per second exceeds 1500 times, and the gas outlet temperature of the air compressor is above 250 ℃. The above compressor characteristics place stringent demands on the performance and life of the outlet valve.

Disclosure of utility model

The present utility model is directed to an exhaust valve and a compressor, which solve some of the problems of the prior art.

In order to solve the above-described problems, according to an aspect of the present utility model, there is provided an exhaust valve including:

The main body comprises a valve seat and a valve body which is formed by integrally extending upwards from the valve seat, wherein the bottom of the valve seat is provided with an air inlet hole, the valve body is cylindrical and internally provided with an inner flow passage, the side part of the valve body is provided with an air outlet hole, the inner flow passage is in fluid communication with the air outlet hole,

The elastic piece is arranged at the outer side of the air outlet hole and used for controlling the opening and closing of the air outlet hole and the air flow, and

A housing mounted to the valve seat and forming an outer flow path between an outer wall of the valve body and an inner wall of the housing, wherein

The elastic piece comprises a fixing part and an elastic piece, the fixing part is fixed at the top of the valve body, and the elastic piece is arranged at the outer side of the air outlet hole and is elastically connected with the fixing part.

In one embodiment, an air inlet hole is formed at the bottom of the valve seat, a plurality of air outlet holes are formed at the side of the valve body, and each air outlet hole is provided with one elastic piece.

In one embodiment, the exhaust valve further comprises a buckle plate, the buckle plate fixes the fixing portion of the elastic member at the top of the valve body, optionally, a bending portion is arranged at the outer edge of the buckle plate, the bending portion is buckled at the fixing portion of the elastic member, and the inner edge of the buckle plate is fixedly connected with the valve body.

In one embodiment, the fixing portion of the elastic member forms a rectangular outer ring, the elastic portion of the elastic member is connected to the inner periphery of the outer ring through a connecting portion, and the connecting portion is tilted inwards by a certain angle, so that the elastic sheet is sunk inwards by a certain depth relative to the outer ring and is attached to the outer side of the air outlet hole.

In one embodiment, the valve seat is provided with a stop portion arranged outside the air outlet hole, and the elastic sheet is arranged between the stop portion and the air outlet hole.

In one embodiment, the air outlet hole is disposed on the valve body along an oblique direction, and the value range of the oblique angle α formed by the air outlet hole and the horizontal line is: alpha is more than or equal to 15 and less than or equal to 75.

In one embodiment, the exhaust valve further comprises a fixing assembly, the fixing assembly at least comprises a single-head handle and a nut, a screw hole is formed in the top of the valve body, and the single-head handle is connected into the screw hole and compresses the buckle plate through the nut.

In one embodiment, the buckle plate comprises a first part and a second part, the first part and the second part are combined to form a complete buckle plate, the bending part is formed at the periphery, a round hole is formed in the middle, and the buckle plate is fixedly connected with the valve body through the cooperation of the single-head handle, the nut, the round hole and the screw hole at the top end of the valve body.

In one embodiment, the exhaust valve further comprises a gasket disposed on an upper surface of the valve seat and a bottom of the housing.

According to another aspect of the present utility model, there is also provided a compressor including the above exhaust valve.

According to the utility model, through the design of the exhaust path and the structure of the elastic piece, the movement stroke of the elastic piece is reduced, the compression rate of the elastic piece is reduced, the stress level is reduced, and the fatigue is reduced, so that the technical effect of prolonging the service life of the valve is achieved.

Drawings

Fig. 1 is a perspective view of an exhaust valve according to an embodiment of the present utility model.

FIG. 2 is an exploded perspective view of an exhaust valve according to one embodiment of the present utility model.

FIG. 3 is another exploded perspective view of an exhaust valve according to one embodiment of the present utility model.

Fig. 4 is a perspective view of an exhaust valve according to an embodiment of the present utility model.

Fig. 5 is a perspective view of a valve body according to one embodiment of the present utility model.

FIG. 6 is a cross-sectional view of a valve body according to one embodiment of the present utility model.

Fig. 7 is a perspective view of a valve seat according to one embodiment of the present utility model.

Fig. 8 is a perspective view of a compact according to an embodiment of the present utility model.

Fig. 9 is a perspective view of an elastic member according to an embodiment of the present utility model.

Detailed Description

The preferred embodiments of the present utility model will be described in detail below with reference to the attached drawings, so that the objects, features and advantages of the present utility model will be more clearly understood. It should be understood that the embodiments shown in the drawings are not intended to limit the scope of the utility model, but rather are merely illustrative of the true spirit of the utility model.

In the following description, for the purposes of explanation of various disclosed embodiments, certain specific details are set forth in order to provide a thorough understanding of the various disclosed embodiments. One skilled in the relevant art will recognize, however, that an embodiment may be practiced without one or more of the specific details. In other instances, well-known devices, structures, and techniques associated with the present application may not be shown or described in detail to avoid unnecessarily obscuring the description of the embodiments.

Reference throughout this specification to "one embodiment" or "an embodiment" means that a particular feature, structure, or characteristic described in connection with the embodiment is included in at least one embodiment. Thus, appearances of the phrases "in one embodiment" or "in an embodiment" in various places throughout this specification are not necessarily all referring to the same embodiment. Furthermore, the particular features, structures, or characteristics may be combined in any suitable manner in one or more embodiments.

In the following description, for the purposes of clarity of presentation of the structure and manner of operation of the present utility model, the description will be made with the aid of directional terms, but such terms as "forward," "rearward," "left," "right," "outward," "inner," "outward," "inward," "upper," "lower," etc. are to be construed as convenience, and are not to be limiting.

The present utility model relates generally to an exhaust valve that is particularly useful for devices requiring high density exhaust gas, such as the exhaust of a rotor piston compressor. The rotor piston compressor has the advantages of high gas transmission density, high gas feeding speed, simple and efficient structure, higher rotating speed, extremely low vibration noise, reduced manufacturing cost, long service life and high skill efficiency. Compared with the traditional internal combustion engine, one rotation of the rotary engine is equal to four strokes of the engine, one working cavity works equal to three cylinders work simultaneously, and the same volume weight can burst out more power. One rotation of the rotor piston compressor completes suction and compression simultaneously, one volume cavity is equal to that of a plurality of cylinders to work simultaneously, the working efficiency is extremely high, and the exhaust capacity of the traditional compressor with the volume more than twice of that of the traditional compressor can be generated by smaller volume weight. Also, because of the quasi-overlap of compression strokes, the rotor piston compressor has very rapid response to power increase, can rapidly increase the displacement when the gas consumption rises, and has more obvious characteristics in combination with an energy-saving high-speed motor.

Meanwhile, because the gas transmission density of the rotor piston compressor is several times that of the traditional piston compressor, in order to match the flow of the rotor piston compressor, the equivalent flow area of the exhaust valve with the same volume is also required to be obviously higher than that of the exhaust valve of the traditional compressor, and the design can fully meet the characteristic of matching the rotor piston compressor.

Fig. 1 is a perspective view of an exhaust valve according to an embodiment of the present utility model, fig. 2 is a perspective exploded view of an exhaust valve according to an embodiment of the present utility model, fig. 3 is another perspective exploded view of an exhaust valve according to an embodiment of the present utility model, fig. 4 is a perspective view of an exhaust valve according to an embodiment of the present utility model, fig. 5 is a perspective view of a valve body according to an embodiment of the present utility model, fig. 6 is a cross-sectional view of a valve body according to an embodiment of the present utility model, fig. 7 is a perspective view of a valve seat according to an embodiment of the present utility model, fig. 8 is a perspective view of a pressing block according to an embodiment of the present utility model, and fig. 9 is a perspective view of an elastic member according to an embodiment of the present utility model.

Referring to fig. 1 to 9, the exhaust valve of the present utility model generally includes a body 10, an elastic member 20, and a housing 30, the body 10 including a valve seat 11 and a valve body 12 integrally extended upward from the valve seat 11, the valve seat 11 having an air inlet hole 111 at the bottom thereof, the valve body 12 having a cylindrical shape and having an inner flow passage 121 formed therein and having an air outlet hole 122 at the side thereof, the inner flow passage 121 being in fluid communication with the air outlet hole 122, the elastic member 20 being disposed at the outer side of the air outlet hole 122 for controlling opening and closing of the air outlet hole and the amount of exhaust, the housing 30 being mounted on the valve seat 11 and cooperating with the valve body to form an outer flow passage 31 between the outer wall of the valve body and the inner wall of the housing, and the air being discharged to the outer flow passage 31 through the valve body inner flow passage 121 and the air outlet hole 122 after passing through the air inlet hole 111. The elastic member 20 includes a fixing portion 21 and a spring 22, the fixing portion 21 is fixed on the top of the valve body 12, and the spring 22 is disposed outside the air outlet 122 and is elastically connected to the fixing portion 21.

The operation of the discharge valve of the present utility model will be described with reference to a compressor, however, it will be understood by those skilled in the art that the discharge valve of the present utility model is not limited to use with compressors, but may be used with other devices. In operation, gas enters through the inlet aperture 111 and pushes the dome 22 away from the outlet aperture 122 when the pressure in the discharge chamber of the compressor is greater than the sum of the pressure outside the outlet aperture of the discharge valve and the spring force of the dome. According to the utility model, through the design of the exhaust path and the structure of the elastic piece, the movement stroke of the elastic piece is reduced, the compression rate of the elastic piece is reduced, the stress level is reduced, and the fatigue is reduced, so that the technical effect of prolonging the service life of the valve is achieved.

Optionally, the bottom of the valve seat 11 forms an air inlet hole 111, the side of the valve body 12 forms a plurality of air outlet holes 122, each air outlet hole 122 is provided with one elastic member 20, for example, in the illustrated embodiment, the side of the valve body 12 forms three air outlet holes 122, each air outlet hole is provided with one elastic member 20, and the three air outlet holes 122 are uniformly distributed along the outer circumference of the valve body 12.

In addition, in the embodiment shown in fig. 1-9, the valve seat 11 and the valve body 12 are assembled after being molded separately, for example, the bottom end of the valve body 12 is provided with a protrusion 124, and the protrusion 124 extends into and is clamped in the air outlet hole in the middle of the valve seat 11, and then the valve seat and the valve body are tightly connected by rolling deformation at the bottom end.

However, those skilled in the art will appreciate that in other embodiments, the valve seat 11 and the valve body 12 may be integrally formed, and are not limited thereto.

Alternatively, the bottom of the housing 30 is open and is sleeved outside the valve body from top to bottom, the bottom of the housing 30 is matched with the valve seat, and an outer flow passage is formed between the inner wall of the housing 30 and the outer wall of the valve body 12.

Optionally, the air outlet hole 122 on the valve body 12 is disposed on the valve body along an oblique direction, and the range of the inclination angle α formed by the air outlet hole 122 and the horizontal line is as follows: alpha is more than or equal to 15 and less than or equal to 75. By setting the angle of the air outlet 122, the air outlet efficiency can be improved.

In one embodiment, the exhaust valve 100 further includes a buckle 40, the fixing portion 21 of the elastic member 20 is fixed on the top of the valve body 11 by the buckle 40, optionally, a bending portion 41 is disposed on an outer edge of the buckle 40, the bending portion 41 is buckled on the fixing portion 21 of the elastic member 20, and an inner edge of the buckle is fixedly connected with the valve body 12. The fixing part of the elastic piece is firmly fixed on the valve body through the buckle plate, and the elastic piece is prevented from falling off in the process of quick opening and closing of the elastic piece.

Optionally, the fixing portion 21 of the elastic member 20 forms a rectangular outer ring, the elastic member 22 is connected to the inner periphery of the outer ring through the connecting portion 23, and the connecting portion 23 is tilted inward by a certain angle, so that the elastic member 22 is sunk inward by a certain depth relative to the outer ring and is attached to the outer side of the air outlet hole 122, thereby ensuring the air tightness of the valve body.

In one embodiment, the valve seat 11 is provided with a stop portion 112, the stop portion 112 is arranged at the outer side of the air outlet hole 122, the elastic sheet 22 is arranged between the stop portion 112 and the air outlet hole 122, when the elastic sheet 22 is opened, the stop portion 112 limits the opening angle of the elastic sheet, optionally, the stop portion 112 integrally extends upwards from the upper surface of the valve seat 11 to form a plane, the inner surface forms a curved surface, the plane of the inner surface is matched with the elastic sheet, and the curved surface of the outer surface is matched with the inner wall of the housing 30.

In one embodiment, the vent valve 100 further includes a securing assembly 50, the securing assembly 50 being used to secure the pinch plate 40 to the valve body 12. Optionally, the fixing assembly 50 at least includes a single-head handle 51 and a nut 52, and a screw hole 123 is formed at the top of the valve body 12, and the single-head handle 51 is connected in the screw hole 123 and locks the buckle 40 by the nut 52.

Optionally, the fixing assembly 51 further includes a spring washer 53 and a flat washer 54, the spring washer 53 and the flat washer 54 being disposed in sequence below the nut 52 and pressed against the pinch plate 40 by the nut 52, thereby securely locking the pinch plate 40 to the valve body 12.

Optionally, the buckle 40 includes a first portion 40A and a second portion 40B, where the first portion 40A and the second portion 40B are combined to form a complete buckle, a bending portion 41 is formed on the periphery of the buckle, and a circular hole 42 is formed in the middle, and the buckle 40 is fixedly connected to the valve body through cooperation of a single-head handle 51 and the circular hole and a screw hole 123 at the top end of the valve body. The rapid assembly of the clip 40 is facilitated by providing the clip 40 in a two-part combination, although those skilled in the art will appreciate that the clip 40 may be provided in a multi-piece assembly, such as three pieces, four pieces, etc., and the number of pieces comprising the clip is not limited herein.

In one embodiment, the exhaust valve 100 further comprises a gasket 60, wherein the gasket 60 is disposed on the upper surface of the valve seat 11 and the bottom of the housing, and the height of the exhaust valve is adjusted by setting the thickness of the gasket 60 to adapt to different applications. It should be noted that the gasket 60 of the present utility model may be a series of different thickness gasket sets, with different thickness gaskets being selected for different applications.

According to another aspect of the present utility model, there is also provided a compressor including the above-described discharge valve.

The present utility model is preferably a rotor piston compressor, but those skilled in the art will appreciate that the compressor of the present utility model may be other types of compressors.

The technical advantages of the exhaust valve of the present utility model over conventional exhaust valves are demonstrated by a specific example below.

Example 1

Based on a 0.4mm thick 316L stainless steel plate, the elastic member opening pressure difference was 0.02MPa.

	Maximum stress amplitude MPa	Maximum displacement mm
			Novel exhaust valve	185.8	0.9
Conventional exhaust valve	196.3	1.18

The maximum displacement determines the opening speed of the moving part, and the opening frequency of the exhaust valve is improved by more than 25 percent, so that the exhaust valve can perform high-frequency air outlet.

The maximum stress and the maximum stress distribution area determine the overall life of the elastic moving part.

Based on the use condition, the air flow temperature of the air outlet valve is not higher than 350 ℃ and is 0.8MPa-1.0 MPa.

Stainless steel 316L and stainless steel 321 have the following stress amplitude versus fatigue life relationship at 350 degrees celsius:

Δσ/2＝697.7×〖(2N_f)〗^(-0.1297)

according to the data in the table, the theoretical life of the elastic piece of the exhaust valve is about 564 ten thousand times under the worst working condition, the theoretical life of the conventional exhaust valve is about 369 ten thousand times, and the life is improved by more than 52.8%.

It should be noted that features shown in the drawings of the present application may belong to one embodiment or may belong to different embodiments, as long as there is no conflict between the features. For the sake of brevity, the application may be illustrated in different embodiments with the same drawing, i.e. the same drawing of the application may be used to embody features of different embodiments.

While the preferred embodiments of the present utility model have been described in detail, it will be appreciated that those skilled in the art, upon reading the above teachings, may make various changes and modifications to the utility model. Such equivalents are also intended to fall within the scope of the utility model as defined by the following claims.

Claims

1. An exhaust valve, characterized in that it comprises:

2. The exhaust valve according to claim 1, wherein a bottom of the valve seat forms an intake hole, and a side of the valve body forms a plurality of exhaust holes, each of the exhaust holes being provided with one of the elastic members.

3. The vent valve of claim 1 further comprising a gusset securing the securing portion of the resilient member to the top of the valve body.

4. The exhaust valve according to claim 3, wherein the outer edge of the buckle plate is provided with a bending portion, the bending portion is buckled on the fixing portion of the elastic member, and the inner edge of the buckle plate is fixedly connected with the valve body.

5. The exhaust valve according to claim 1, wherein the fixing portion of the elastic member forms a rectangular outer ring, the elastic sheet of the elastic member is connected to an inner periphery of the outer ring through a connecting portion, and the connecting portion is tilted inward by a certain angle, so that the elastic sheet is sunk inward by a certain depth relative to the outer ring and is attached to an outer side of the air outlet hole.

6. The exhaust valve according to claim 1, wherein the valve seat is provided with a stopper portion arranged outside the air outlet hole, and the elastic piece is arranged between the stopper portion and the air outlet hole.

7. The exhaust valve according to claim 1, wherein the air outlet hole is provided on the valve body in an inclined direction, and the inclination angle α formed by the air outlet hole and the horizontal line has a value ranging from: alpha is more than or equal to 15 and less than or equal to 75.

8. The vent valve of claim 4 further comprising a securing assembly comprising at least a single-ended handle and a nut, the top of the valve body having a threaded bore, the single-ended handle being connected within the threaded bore and compressing the pinch plate via the nut.

9. The vent valve of claim 8 wherein the gusset comprises a first portion and a second portion, the first portion and the second portion combining to form a complete gusset and forming the bend at the periphery and a circular hole in the middle, the gusset being fixedly connected to the valve body by the single-ended handle and the nut engaging the circular hole and the threaded hole in the top end of the valve body.

10. The vent valve of claim 1 further comprising a gasket disposed on an upper surface of the valve seat and a bottom of the housing.

11. A compressor comprising a discharge valve according to any one of claims 1-10.