Exhaust valve assembly of compressor

Abstract

The utility model discloses a compressor exhaust valve assembly which comprises a connecting valve seat, a sealing valve plate is fixed to the end of the connecting valve seat, a first air groove is formed in the middle of the sealing valve plate, the connecting valve plate is fixed to one side of the sealing valve plate in an adhesive mode, and a second air groove corresponding to the first air groove is formed in the middle of the connecting valve plate. An elastic valve plate is clamped and limited between the second air groove and the sealing valve plate, vibration reduction assemblies are arranged on the two sides of the second air groove correspondingly, a pressure roller is connected between the two vibration reduction assemblies, pressing plates are fixedly connected to the two opposite inner walls of the second air groove correspondingly, and one end of the elastic valve plate is inserted into a gap between the pressing plate and the sealing valve plate. After the elastic valve plate slightly deforms, the pressing plate is embedded into the positioning groove, the pressing plate can press the side edge of the elastic valve plate, the attaching degree of the elastic valve plate and the sealing valve plate is improved, the air tightness effect is guaranteed, the locking clamping protrusion is embedded into the limiting clamping groove, the elastic valve plate can be prevented from being disengaged, and assembling is convenient and fast.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a compressor exhaust valve assembly. Background Art

[0002] The compressor is a driven fluid machine that can elevate low-pressure gas to high-pressure gas, and is the heart of the refrigeration system. It inhales low-temperature, low-pressure refrigerant gas from the suction pipe, compresses it by driving the piston through the operation of the motor, and then discharges high-temperature, high-pressure refrigerant gas to the exhaust pipe, providing power for the refrigeration cycle, thereby realizing the refrigeration cycle of compression → condensation (heat release) → expansion → evaporation (heat absorption). Among them, the compressor is divided into piston compressor, screw compressor, centrifugal compressor, linear compressor, etc. The piston compressor is generally composed of a housing, an electric motor, a cylinder, a piston, a control device (starter and thermal protector) and a cooling system. There are three cooling methods: oil cooling, air cooling, and natural cooling;

[0003] Chinese patent announcement number CN219366268U discloses a compressor exhaust valve assembly, which is provided with a buffer air cavity on the lift limiter, the buffer air cavity is hollow, and the buffer air cavity is provided with an adsorption air hole toward the exhaust valve plate, and the side wall of the buffer air cavity is provided with a small air hole. When exhausting, the exhaust valve plate rises and contacts the buffer air cavity of the lift limiter, the exhaust valve plate abuts against the adsorption air hole, and squeezes the buffer air cavity, so that the gas inside the buffer air cavity is discharged from the small air hole, forming a short-term negative pressure, and the exhaust valve plate is sucked by the adsorption air hole; thus, through the above structure, the exhaust valve plate is briefly adsorbed by the buffer air cavity after hitting the lift limiter, so as to prevent the valve plate from rebounding; a buffer elastic plate is provided on the valve plate, and through the protruding structure on the buffer elastic plate, when the exhaust valve plate passes the equilibrium position, the exhaust valve plate is supported by the buffer elastic plate, so as to prevent the exhaust valve plate from falling to the valve plate to close the exhaust hole too quickly after passing the equilibrium position, and the problem of valve plate trembling can be effectively avoided;

[0004] The above technology uses bolt compression to position the exhaust valve plate. Since the compression part is located in the relatively central position of the exhaust valve plate, the pressing force at the edge of the exhaust valve plate is insufficient, which easily causes a closed gap at the edge and insufficient air tightness. The exhaust valve plate is only damped by a buffer elastic plate, and the damping effect is insufficient. For this reason, the utility model provides a compressor exhaust valve assembly for solving the above problems. Utility Model Content

[0005] The utility model aims to provide a compressor exhaust valve assembly to solve the technical problems of insufficient air tightness and insufficient shock absorption effect of traditional compressor exhaust valve assemblies.

[0006] To achieve the above purpose, the utility model solves the above technical problems as follows:

[0007] A compressor exhaust valve assembly includes a connecting valve seat, a sealing valve plate is fixed to the end of the connecting valve seat, a first air groove is opened in the middle of the sealing valve plate, a connecting valve plate is adhesively fixed to one side of the sealing valve plate, a second air groove is opened in the middle of the connecting valve plate corresponding to the first air groove, an elastic valve sheet is clamped and limited between the second air groove and the sealing valve plate, vibration damping assemblies are arranged on both sides of the second air groove, and a pressure roller is connected between the two vibration damping assemblies.

[0008] As a further solution of the utility model, pressure plates are fixedly connected to two opposite inner walls of the second air groove, a limiting clip is fixedly connected to the inner wall on the other side of the second air groove, and a locking protrusion is fixedly connected to the lower side of one end of the limiting clip.

[0009] As a further solution of the utility model, positioning grooves are provided on both side edges of the elastic valve plate, and a limiting slot is provided on the upper side of the elastic valve plate and between the two positioning grooves, wherein the positioning groove is adapted to the adjacent pressure plate, and the limiting slot is engaged with the locking cam.

[0010] As a further solution of the utility model, the cross-section of the first air groove is a water drop-shaped structure, the water drop-shaped structure is divided into a wide diameter end and a narrow diameter end, and the end of the elastic valve sheet away from the clamping part is opposite to the narrow diameter end of the first air groove.

[0011] As a further solution of the utility model, the vibration damping assembly includes a guide groove located on the side wall of the second air groove, a guide slider is slidably embedded in the guide groove, a spring shock absorber is fixed between the guide slider and the inner wall of one end of the second air groove, and a pressure roller is rotatably connected between the two guide sliders.

[0012] As a further solution of the utility model, a drag-reducing roller sleeve is sleeved on the outer side of the middle portion of the pressure roller, and bearings are installed between the inner walls at both ends of the drag-reducing roller sleeve and the pressure roller.

[0013] As a further solution of the utility model, the outer wall of the connecting valve seat is provided with an external thread, and the connecting valve seat and the sealing valve plate are welded and fixed to form an integrated structure.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The compressor exhaust valve assembly inserts one end of the elastic valve sheet into the gap between the pressure plate and the sealing valve plate. After the elastic valve sheet is slightly deformed, the pressure plate is embedded in the positioning groove. The pressure plate can press the side of the elastic valve sheet, thereby improving the fit between the elastic valve sheet and the sealing valve plate and ensuring the airtightness. The locking convex is embedded in the limit card groove to prevent the elastic valve sheet from falling out. The assembly is convenient and quick, and the production efficiency is improved.

[0016] 2. In the compressor exhaust valve assembly, when the compressor is exhausted, the high-pressure gas pushes the elastic valve plate, and the end of the elastic valve plate away from the clamping part is deformed, so that the high-pressure gas can be discharged outward. The first gas groove adopts a variable diameter structure, so that when the deformation degree of the elastic valve plate increases, its exhaust volume can be progressively increased, which effectively controls the deformation degree of the elastic valve plate in a short time and prolongs the service life of the elastic valve plate;

[0017] 3. For the exhaust valve assembly of the compressor, during the operation of the compressor, the elastic valve plate squeezes the drag reduction roller sleeve to cause displacement, the drag reduction roller sleeve rolls along the surface of the elastic valve plate, the pressure roller pushes the guide slider, and the guide slider transmits the force to the spring shock absorber. The spring shock absorber stabilizes the elastic valve plate. During the opening and closing stages of the elastic valve plate, the vibration of the elastic valve plate can be avoided, and the elastic valve plate is prevented from contacting the sealing valve plate multiple times, thereby ensuring the stability of the elastic valve plate. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] The utility model is further described below in conjunction with the accompanying drawings and embodiments:

[0019] Figure 1 This is a structural disassembly diagram of a compressor exhaust valve assembly of the utility model;

[0020] Figure 2 The utility model is a compressor exhaust valve assembly Figure 1 A magnified view of the structure at A;

[0021] Figure 3 The utility model is a compressor exhaust valve assembly Figure 1 A magnified view of the structure at B in FIG.

[0022] Figure 4 This is a top view of a compressor exhaust valve assembly of the utility model;

[0023] Figure 5 This is a structural diagram of an elastic valve sheet in a compressor exhaust valve assembly of the utility model;

[0024] Figure 6 The utility model is a compressor exhaust valve assembly Figure 3 Enlarged view of the structure at position C in the figure.

[0025] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0026] 1. Connecting valve seat; 11. External thread; 2. Sealing valve plate; 21. First air groove; 3. Connecting valve plate; 31. Second air groove; 311. Pressing plate; 312. Limiting card strip; 313. Locking card convex; 4. Elastic valve plate; 41. Positioning groove; 42. Limiting card groove; 5. Vibration reduction assembly; 51. Guide slide groove; 52. Guide slider; 53. Spring shock absorber; 6. Pressure roller; 61. Drag reduction roller sleeve. DETAILED DESCRIPTION

[0027] The present invention will be further described below in conjunction with the embodiments.

[0028] See also Figure 1-6 The utility model provides a compressor exhaust valve assembly, including a connecting valve seat 1, an outer wall of the connecting valve seat 1 is provided with an external thread 11, and the connecting valve seat 1 is welded and fixed to a sealing valve plate 2 as an integrated structure, an exhaust hole is provided on the compressor cylinder body corresponding to the connecting valve seat 1, and an internal thread is provided on the inner wall of the exhaust hole corresponding to the external thread 11, so that the connecting valve seat 1 can be connected to the compressor thread, the connection is firm, and the assembly is convenient, and high temperature resistant glue can also be coated during assembly to prevent leakage.

[0029] Furthermore, a sealing valve plate 2 is fixed to the end of the connecting valve seat 1, and a first air groove 21 is opened in the middle of the sealing valve plate 2. The cross section of the first air groove 21 is a water drop-shaped structure, and the water drop-shaped structure is divided into a wide diameter end and a narrow diameter end, and the end of the elastic valve plate 4 away from the clamping part is opposite to the narrow diameter end of the first air groove 21;

[0030] Specifically, when the compressor is exhausting gas, the high-pressure gas pushes open the elastic valve plate 4, and the end of the elastic valve plate 4 away from the clamping position is deformed, so that the high-pressure gas can be discharged outward. The first gas groove 21 adopts a variable diameter structure, so that when the deformation degree of the elastic valve plate 4 increases, its exhaust volume can be progressively increased, which effectively controls the deformation degree of the elastic valve plate 4 in a short time and extends the service life of the elastic valve plate 4.

[0031] Furthermore, a connecting valve plate 3 is bonded and fixed to one side of the sealing valve plate 2, and a second air groove 31 is opened in the middle of the connecting valve plate 3 corresponding to the first air groove 21;

[0032] Specifically, the sealing valve plate 2 and the connecting valve plate 3 are bonded together by high temperature resistant adhesive, so that the sealing valve plate 2 and the connecting valve plate 3 can be connected into an integrated structure.

[0033] Furthermore, an elastic valve plate 4 is clamped and limited between the second air groove 31 and the sealing valve plate 2, and a pressure plate 311 is fixedly connected to two opposite inner walls of the second air groove 31, and a limiting clamping strip 312 is fixedly connected to the inner wall of the other side of the second air groove 31, and a locking clamping protrusion 313 is fixedly connected to the lower side of one end of the limiting clamping strip 312;

[0034] Specifically, the cross-section of the locking protrusion 313 is a right-angled triangle structure, and its inclined surface is opposite to the insertion direction of the elastic valve plate 4, so that the elastic valve plate 4 can be inserted smoothly, and the vertical surface of the elastic valve plate 4 is away from the insertion direction of the elastic valve plate 4, so that after the elastic valve plate 4 is inserted, the locking protrusion 313 is embedded in the limiting slot 42 and cannot fall out.

[0035] Furthermore, positioning grooves 41 are provided on both sides of the elastic valve plate 4, and a limiting groove 42 is provided on the upper side of the elastic valve plate 4 and between the two positioning grooves 41, wherein the positioning groove 41 is adapted to the adjacent pressure plate 311, and the limiting groove 42 is engaged with the locking protrusion 313;

[0036] Specifically, one end of the elastic valve plate 4 is inserted into the gap between the pressure plate 311 and the sealing valve plate 2. After the elastic valve plate 4 is slightly deformed, the pressure plate 311 is embedded in the positioning groove 41. The pressure plate 311 can press the side of the elastic valve plate 4, thereby improving the fit between the elastic valve plate 4 and the sealing valve plate 2 and ensuring the sealing effect. The locking protrusion 313 is embedded in the limiting groove 42 to prevent the elastic valve plate 4 from falling out, and the assembly is convenient and quick.

[0037] Furthermore, a vibration reduction assembly 5 is provided on both sides of the second air groove 31, and the vibration reduction assembly 5 includes a guide slide groove 51 located on the side wall of the second air groove 31, and a guide slider 52 is slidably embedded in the guide slide groove 51, and a spring shock absorber 53 is fixed between the guide slider 52 and the inner wall of one end of the second air groove 31, and a pressure roller 6 is rotatably connected between the two guide sliders 52;

[0038] Specifically, during the opening and closing process of the elastic valve plate 4, the elastic valve plate 4 squeezes the drag reduction roller sleeve 61 to displace, and the drag reduction roller sleeve 61 rolls along the surface of the elastic valve plate 4. The pressure roller 6 pushes the guide slider 52, and the guide slider 52 transmits the force to the spring shock absorber 53. The spring shock absorber 53 stabilizes the elastic valve plate 4, thereby avoiding the elastic valve plate 4 from vibrating and ensuring the stability of the elastic valve plate 4.

[0039] Furthermore, a pressure roller 6 is connected between the two vibration reduction assemblies 5, a drag reduction roller sleeve 61 is sleeved on the outer side of the middle part of the pressure roller 6, and bearings are installed between the inner walls of both ends of the drag reduction roller sleeve 61 and the pressure roller 6;

[0040] Specifically, the bearing can effectively reduce the rotational resistance between the drag reduction roller sleeve 61 and the pressure roller 6, thereby reducing wear and tear and increasing the service life of the equipment;

[0041] Specifically, the drag-reducing roller sleeve 61 maintains a rolling connection with the elastic valve plate 4 , which can reduce the friction resistance and prevent the elastic valve plate 4 from being excessively worn.

[0042] Working principle: When installing the compressor exhaust valve assembly, insert one end of the elastic valve plate 4 into the gap between the pressure plate 311 and the sealing valve plate 2. After the elastic valve plate 4 is slightly deformed, the pressure plate 311 is embedded in the positioning groove 41. The pressure plate 311 can press the side of the elastic valve plate 4, thereby improving the fit between the elastic valve plate 4 and the sealing valve plate 2 and ensuring the sealing effect. The locking protrusion 313 is embedded in the limiting card groove 42 to prevent the elastic valve plate 4 from falling out. The assembly is convenient and quick. On the contrary, the limiting card strip 312 can be lifted upward to pull out the elastic valve plate 4. The disassembly is convenient and quick. When the compressor is exhausted, the high-pressure gas pushes the elastic valve plate 4 away from the clamping position. One end of the elastic valve plate 4 is deformed, so that the high-pressure gas can be discharged outward. The first gas groove 21 adopts a variable diameter structure, so that the exhaust volume can be progressively increased when the deformation degree of the elastic valve plate 4 increases, effectively controlling the deformation degree of the elastic valve plate 4 in a short time, and extending the service life of the elastic valve plate 4. In this process, the elastic valve plate 4 squeezes the drag reduction roller sleeve 61 to displace, and the drag reduction roller sleeve 61 rolls along the surface of the elastic valve plate 4. The pressure roller 6 pushes the guide slider 52, and the guide slider 52 transmits the force to the spring shock absorber 53. The spring shock absorber 53 stabilizes the elastic valve plate 4, which can avoid the vibration of the elastic valve plate 4 and ensure the stability of the elastic valve plate 4.

Claims

1. A compressor exhaust valve assembly, comprising a connecting valve seat (1), characterized in that: A sealing valve plate (2) is fixed at the end of the connecting valve seat (1), a first air groove (21) is provided in the middle of the sealing valve plate (2), a connecting valve plate (3) is adhesively fixed to one side of the sealing valve plate (2), a second air groove (31) is provided in the middle of the connecting valve plate (3) corresponding to the first air groove (21), an elastic valve plate (4) is clamped and limited between the second air groove (31) and the sealing valve plate (2), vibration-damping components (5) are provided on both sides of the second air groove (31), and a pressure roller (6) is connected between the two vibration-damping components (5).

2. A compressor exhaust valve assembly according to claim 1, characterized in that: A pressure plate (311) is fixedly connected to two opposite inner walls of the second air groove (31), a limit clamping strip (312) is fixedly connected to the inner wall on the other side of the second air groove (31), and a locking clamping protrusion (313) is fixedly connected to the lower side of one end of the limit clamping strip (312).

3. A compressor exhaust valve assembly according to claim 2, characterized in that: Positioning grooves (41) are provided on both side edges of the elastic valve plate (4), and a limiting clamping groove (42) is provided on the upper side of the elastic valve plate (4) and between the two positioning grooves (41), wherein the positioning groove (41) is matched with the adjacent pressure plate (311), and the limiting clamping groove (42) is engaged with the locking clamping protrusion (313).

4. A compressor exhaust valve assembly according to claim 1, characterized in that: The cross section of the first air groove (21) is a water drop-shaped structure, the water drop-shaped structure is divided into a wide diameter end and a narrow diameter end, and the end of the elastic valve sheet (4) away from the clamping position is opposite to the narrow diameter end of the first air groove (21).

5. A compressor exhaust valve assembly according to claim 1, characterized in that: The vibration reduction assembly (5) comprises a guide slide groove (51) located on the side wall of the second air groove (31), a guide slider (52) is slidably embedded in each of the guide slide grooves (51), a spring shock absorber (53) is fixed between the guide slider (52) and the inner wall of one end of the second air groove (31), and a pressure roller (6) is rotatably connected between the two guide sliders (52).

6. A compressor exhaust valve assembly according to claim 5, characterized in that: A drag-reducing roller sleeve (61) is sleeved on the outer side of the middle portion of the pressure roller (6), and bearings are installed between the inner walls of both ends of the drag-reducing roller sleeve (61) and the pressure roller (6).

7. A compressor exhaust valve assembly according to claim 1, characterized in that: The outer wall of the connecting valve seat (1) is provided with an external thread (11), and the connecting valve seat (1) and the sealing valve plate (2) are welded and fixed to form an integrated structure.

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