Cushion valve group structure, compressor and refrigeration equipment

Abstract

The invention discloses a cushion valve bank structure, a compressor and refrigeration equipment, and relates to the technical field of compressors, the cushion valve bank structure comprises a valve plate, a valve block, a limiter and a buffer part, and the valve plate is provided with an exhaust hole; the valve plate covers the exhaust hole, the mounting end of the valve plate is mounted to the valve plate, and the limiter is arranged on the side, away from the exhaust hole, of the valve plate and used for limiting the valve plate in the stroke that the valve plate swings away from the exhaust hole; the buffer part is arranged between the valve plate and the limiter and comprises an elastic buffer plate, one end of the elastic buffer plate is mounted on the valve plate and corresponds to the mounting end of the valve plate, and the other end of the elastic buffer plate extends in the first direction; a concave part or a convex part is arranged on one side, facing the valve plate, of the elastic buffer plate, so that the binding surface between the valve plate and the elastic buffer plate is reduced, the viscous force of a film formed between the elastic buffer plate and the valve plate is reduced, when the valve plate is separated from the elastic buffer plate, the viscous force can be overcome quickly, and the valve plate rebounds quickly to seal the exhaust hole; the refrigeration performance of the compressor is improved.

Description

Technical Field

[0001] The invention relates to the technical field of compressors, and in particular to a buffer valve group structure, a compressor and a refrigeration device. Background Art

[0002] The valve group exhaust structure inside the compressor usually consists of multiple components, including valve plates, exhaust valve plates and lift limiters. The valve plate is installed inside the compressor as a fixed part to support and position other moving parts. The exhaust valve plate is one or more movable thin plates that open or close in response to pressure changes in the compression chamber to allow the compressed gas to pass through. The lift limiter is to limit the maximum opening degree of the exhaust valve plate to prevent mechanical damage or other problems caused by excessive opening. These components work together to ensure that the gas in the compression process can be efficiently discharged from the compression chamber to the condenser. However, in actual operation, especially in compressors using R290 (propane) as a refrigerant, the pressure on the exhaust side increases significantly due to the high pressure ratio of R290. This high-pressure environment causes the exhaust valve plate to be subjected to a large impact force every time it is opened and closed. In the long run, this will not only aggravate the wear of the exhaust valve plate and its contact surface, reducing its service life, but also cause resonance of the internal parts of the compressor due to frequent impacts, thereby generating vibration noise and high-frequency clapping sounds.

[0003] In the related art, a reed is provided between the valve plate and the stopper to buffer the valve plate. However, during the operation of the compressor, part of the lubricating oil is discharged from the exhaust port of the compression cylinder along with the refrigerant gas. The presence of oil increases the friction (i.e., viscosity) between the valve plate and the reed in the exhaust structure of the valve group, which affects the exhaust efficiency and noise improvement. Summary of the invention

[0004] The main purpose of the present invention is to propose a buffer valve group structure, a compressor and a refrigeration equipment, aiming to provide a buffer valve group structure that can reduce the valve plate impact force, control the noise level and improve the exhaust efficiency.

[0005] To achieve the above object, the buffer valve group structure proposed by the present invention includes:

[0006] A valve plate, wherein the valve plate is provided with an exhaust hole;

[0007] a valve sheet mounted on the valve plate, the valve sheet covering the exhaust hole, one end of the valve sheet being a mounting end, the mounting end of the valve sheet being mounted to the valve plate, so that the valve sheet can move in a direction away from the exhaust hole under the action of an external force, and cover the exhaust hole under the action of its own restoring force;

[0008] a limiter, arranged on a side of the valve plate away from the exhaust hole, for limiting the position of the valve plate during the swinging stroke of the valve plate away from the exhaust hole; and,

[0009] A buffer portion is arranged between the valve plate and the stopper, the buffer portion comprises an elastic buffer sheet, one end of the buffer sheet is mounted to the valve plate and arranged corresponding to the mounting end of the valve plate, and the other end extends along the first direction;

[0010] Wherein, a concave portion or a convex portion is provided on a side of the elastic buffer sheet facing the valve sheet.

[0011] In one embodiment, a strip-shaped hole is provided on the elastic buffer sheet, the strip-shaped hole extends along the length direction of the elastic buffer sheet, and the recess includes the strip-shaped hole.

[0012] In one embodiment, a mounting groove is provided on the valve plate, the exhaust hole is provided on the bottom wall of the mounting groove, and the valve plate and the limiter are both installed in the mounting groove.

[0013] In one embodiment, in the first direction, the other end of the elastic buffer sheet is disposed beyond the other end of the valve sheet.

[0014] In one embodiment, the elastic buffer sheet is spaced apart from the limiter at least in a direction corresponding to the exhaust hole.

[0015] In one embodiment, in a direction away from the mounting end of the valve plate, at least a portion of the limiter extends in a direction away from the elastic buffer plate to be spaced apart from the elastic buffer plate.

[0016] In one embodiment, the elastic buffer sheet extends a support portion toward the valve plate near its other end, the support portion abuts against the valve plate, and the other end of the elastic buffer sheet abuts against the limiter toward one side of the limiter.

[0017] In one embodiment, at least one side portion of the elastic buffer sheet extends toward the valve plate to form a folded edge, and the folded edge forms the supporting portion.

[0018] In one embodiment, the stopper is interference fit with the mounting groove.

[0019] The present invention further provides a compressor, the compressor comprising a buffer valve group structure, the buffer valve group structure comprising:

[0020] A valve plate, wherein the valve plate is provided with an exhaust hole;

[0021] a valve sheet mounted on the valve plate, the valve sheet covering the exhaust hole, one end of the valve sheet being a mounting end, the mounting end of the valve sheet being mounted to the valve plate, so that the valve sheet can move in a direction away from the exhaust hole under the action of an external force, and cover the exhaust hole under the action of its own restoring force;

[0022] a limiter, arranged on a side of the valve plate away from the exhaust hole, for limiting the position of the valve plate during the swinging stroke of the valve plate away from the exhaust hole; and,

[0023] A buffer portion is arranged between the valve plate and the stopper, the buffer portion comprises an elastic buffer sheet, one end of the buffer sheet is mounted to the valve plate and arranged corresponding to the mounting end of the valve plate, and the other end extends along the first direction;

[0024] Wherein, a concave portion or a convex portion is provided on a side of the elastic buffer sheet facing the valve sheet.

[0025] The present invention further provides a refrigeration device, the refrigeration device comprises a compressor, the compressor comprises a buffer valve group structure, and the buffer valve group structure comprises:

[0026] A valve plate, wherein the valve plate is provided with an exhaust hole;

[0027] a valve sheet mounted on the valve plate, the valve sheet covering the exhaust hole, one end of the valve sheet being a mounting end, the mounting end of the valve sheet being mounted to the valve plate, so that the valve sheet can move in a direction away from the exhaust hole under the action of an external force, and cover the exhaust hole under the action of its own restoring force;

[0028] a limiter, arranged on a side of the valve plate away from the exhaust hole, for limiting the position of the valve plate during the swinging stroke of the valve plate away from the exhaust hole; and,

[0029] A buffer portion is arranged between the valve plate and the stopper, the buffer portion comprises an elastic buffer sheet, one end of the buffer sheet is mounted to the valve plate and arranged corresponding to the mounting end of the valve plate, and the other end extends along the first direction;

[0030] Wherein, a concave portion or a convex portion is provided on a side of the elastic buffer sheet facing the valve sheet.

[0031] In one embodiment, the refrigeration device comprises a refrigerator.

[0032] In the technical solution of the present invention, when exhaust is discharged at the exhaust hole, the valve plate is subjected to the impact force of the high-pressure gas and moves in the direction away from the exhaust hole. When approaching the limiter, the buffer spring effectively absorbs the impact energy generated when the valve plate collides with the limiter during high-speed movement, and significantly reduces the slapping noise and vibration noise. By providing a recessed or convex portion on the side of the elastic buffer plate facing the valve plate, the fitting surface between the valve plate and the elastic buffer plate is reduced, thereby reducing the viscosity of the film formed between the elastic buffer plate and the valve plate, so that when the valve plate is separated from the exhaust buffer spring plate, the viscosity can be quickly overcome, and the valve plate quickly rebounds to seal the exhaust hole, thereby improving the refrigeration performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0033] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0034] Figure 1 A schematic diagram of the structure of a buffer valve group structure according to an embodiment of the present invention;

[0035] Figure 2 for Figure 1 A side view of the middle valve plate, the buffer part and the limiter;

[0036] Figure 3 for Figure 1 A plan view of the structure of the middle buffer valve group;

[0037] Figure 4 for Figure 3 Schematic diagram of the cross section of AA;

[0038] Figure 5 for Figure 4 A partial enlarged view of point C in the middle;

[0039] Figure 6 for Figure 1 Schematic diagram of the structure of the middle valve plate;

[0040] Figure 7 A schematic structural diagram of an embodiment of a compressor provided by the present invention;

[0041] Figure 8 for Figure 7 A side view of the compressor;

[0042] Fig. 9 for Figure 8 Schematic cross-section of the middle BB;

[0043] Fig.10 A comparison diagram of the frequency response of the impact dynamics simulation of the buffer valve group structure provided by the present invention and the buffer valve group structure of the conventional technology;

[0044] Fig.11 A comparison chart of the 1 / 3 octave frequency spectrum of the buffer valve group structure provided by the present invention and the buffer valve group structure of conventional technology in the noise experimental test;

[0045] Fig.12 A comparison chart of experimental test data on the performance of the buffer valve group structure provided by the present invention and the buffer valve group structure of conventional technology.

[0046] Description of Figure Numbers:

[0047] 100. Buffer valve group structure; 1. Valve plate; 1a. Exhaust hole; 1b. Mounting groove; 1b1. First end wall; 1b2. Second end wall; 11. Position limiting convex part; 2. Valve plate; 21. Mounting end; 22. First convex part; 3. Position stopper; 4. Buffer part; 41. Elastic buffer plate; 42. Support part; 421. Folding edge; 43. Second convex part; 44. Concave part; 4a. Strip hole;

[0048] 200. Compressor; 201. Crankcase; 202. Muffler.

[0049] The realization of the purpose, functional features and advantages of the present invention will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0050] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0051] It should be noted that if the embodiments of the present invention involve directional indications (such as up, down, left, right, front, back, etc.), the directional indications are only used to explain the relative position relationship, movement status, etc. between the components in a certain specific posture. If the specific posture changes, the directional indication will also change accordingly.

[0052] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only used for descriptive purposes and cannot be understood as indicating or implying their relative importance or implicitly indicating the number of technical features indicated. Therefore, the features limited to "first" and "second" may explicitly or implicitly include at least one of the features. In addition, if "and / or" or "and / or" appears in the full text, its meaning includes three parallel solutions. Taking "A and / or B" as an example, it includes solution A, solution B, or solutions that satisfy both A and B. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in the field to implement. When the combination of technical solutions is contradictory or cannot be implemented, it should be deemed that such combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0053] The valve plate is installed inside the compressor as a fixed part to support and position other moving parts. The exhaust valve plate is one or more movable thin plates that open or close in response to pressure changes in the compression chamber, allowing the compressed gas to pass through. The lift limiter is to limit the maximum opening degree of the exhaust valve plate to prevent mechanical damage or other problems caused by excessive opening. These components work together to ensure that the gas in the compression process can be efficiently discharged from the compression chamber to the condenser. Because the pressure on the exhaust side increases significantly. This high-pressure environment causes the exhaust valve plate to be subjected to a large impact force every time it is opened and closed. In the long run, this will not only increase the wear of the exhaust valve plate and its contact surface and reduce its service life, but also cause resonance of the internal parts of the compressor due to frequent impacts, thereby generating vibration noise and high-frequency slapping sounds. In the related art, a reed that can buffer the valve plate is set between the valve plate and the limiter, but during the operation of the compressor, part of the lubricating oil is discharged from the exhaust port of the compression cylinder along with the refrigerant gas. The presence of oil increases the friction (i.e., viscosity) between the valve plate and the reed in the valve group exhaust structure, which affects both exhaust efficiency and noise improvement.

[0054] The present invention proposes a buffer valve group structure 100, which aims to provide a buffer valve group structure that can reduce the valve plate impact force, control the noise level, and improve the exhaust efficiency.

[0055] See also Figure 1 and Figure 2In one embodiment of the present invention, the buffer valve group structure 100 includes a valve plate 1, a valve sheet 2, a stopper 3 and a buffer portion 4, wherein the valve plate 1 is provided with an exhaust hole 1a; the valve sheet 2 is mounted on the valve plate 1, and the valve sheet 2 covers the exhaust hole 1a, and one end of the valve sheet 2 is a mounting end 21, and the mounting end 21 of the valve sheet 2 is mounted to the valve plate 1, so that the valve sheet 2 can move in a direction away from the exhaust hole 1a under the action of an external force, and covers the exhaust hole 1a under the action of its own restoring force; The limiter 3 is arranged on the side of the valve plate 2 away from the exhaust hole 1a, and is used to limit the valve plate 2 during the swinging stroke of the valve plate 2 away from the exhaust hole 1a; the buffer part 4 is arranged between the valve plate 2 and the limiter 3, and the buffer part 4 includes an elastic buffer plate 41, one end of the buffer spring plate 41 is installed on the valve plate 1 and is arranged corresponding to the installation end 21 of the valve plate 2, and the other end extends along the first direction; wherein, the elastic buffer plate 41 is provided with a recessed portion 44 or a convex portion on the side facing the valve plate 2.

[0056] It should be noted that the valve plate 1 is a basic component of the valve group structure, and the exhaust hole 1a provided thereon is used to provide a channel for high-pressure gas to be discharged into the system after the compressor 200 completes gas compression.

[0057] The valve plate 2 is mounted on the valve plate 1 and covers the exhaust hole 1a. The mounting end 21 of the valve plate 2 is relatively fixed, and the other end can move freely. When the pressure inside the compressor 200 increases to a certain extent, the valve plate 2 will move away from the exhaust hole 1a under the action of external force, thereby opening the exhaust hole 1a and allowing the gas to be discharged. Once the external force disappears, the valve plate 2 returns to its original position by relying on its own elastic restoring force and closes the exhaust hole 1a again.

[0058] The limiter 3 is installed on the side of the valve plate 2 away from the exhaust hole 1a, providing a stop point during the outward swinging of the valve plate 2 to prevent the valve plate 2 from excessive movement, so as to avoid the valve plate 2 colliding with other components due to excessive swinging, thereby reducing noise and improving the stability of the system.

[0059] The buffer portion 4 is located between the valve plate 2 and the stopper 3, and absorbs impact energy when the valve plate 2 approaches the stopper 3, thereby reducing the direct collision between the valve plate 2 and the stopper 3, and further reducing the vibration and noise generated thereby. In addition, the buffer portion 4 can also help protect the valve plate 2 and the stopper 3 from damage, thereby extending their service life.

[0060] It should also be noted that the buffer portion 4 can be configured as a spring, a spring sheet or other structures, and of course, can also be configured in other possible forms, which can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0061] It should be noted that during the operation of the compressor 200, the refrigerant gas discharged from the exhaust port of the compression cylinder will be mixed with a small amount of oil, and when the valve plate 2 is in contact with the elastic buffer plate 41, a thin film will be formed between the elastic buffer plate 41 and the valve plate 2, which can easily generate viscosity between the valve plate 2 and the elastic buffer plate 41, which will have a certain impact on the deformation and restoration of the valve plate 2 and the elastic buffer plate 41.

[0062] In the technical solution of the present invention, when exhausting air at the exhaust hole 1a, the valve plate 2 is subjected to the impact force of the high-pressure gas and moves in the direction away from the exhaust hole 1a. When approaching the limiter 3, the buffer part 4 effectively absorbs the impact energy generated when the valve plate 2 collides with the limiter 3 during high-speed movement, significantly reducing the slapping noise and vibration noise. The buffer part 4 reduces the direct impact between the valve plate 2 and the limiter 3, reduces mechanical wear, and extends the service life of the valve plate 2 and the limiter 3. By setting a recess 44 or a convex portion on the side of the elastic buffer plate 41 facing the valve plate 2, the fitting surface between the valve plate 2 and the elastic buffer plate 41 is reduced, thereby reducing the viscosity of the film formed between the elastic buffer plate 41 and the valve plate 2, so that when the valve plate 2 is separated from the elastic buffer plate 41, the viscosity can be quickly overcome, and the valve plate 2 quickly rebounds to seal the exhaust hole 1a, thereby improving the refrigeration performance of the compressor 200.

[0063] It should be noted that the convex portion can be set as a plurality of raised small dots, or a plurality of raised strip structures, and the concave portion 44 can be a set groove, or a hollow hole. The convex portion and the concave portion 44 can also be set in other possible shapes, which can be determined according to actual conditions, and the embodiments of this specification do not limit this.

[0064] For details, please continue to see Figure 1 In this embodiment, a strip hole 4 a is provided on the elastic buffer sheet 41 , and the strip hole 4 a extends along the length direction of the elastic buffer sheet 41 , and the recess 44 includes the strip hole 4 a .

[0065] The strip holes 4a can break the film, allowing gas and oil to escape through the pores, reducing the viscosity between the elastic buffer sheet 41 and the valve sheet 2. In addition, the strip holes 4a provide an additional gas flow path, allowing the ejected gas and oil to pass more smoothly, reducing the accumulation between the elastic buffer sheet 41 and the valve sheet 2, thereby reducing viscosity.

[0066] The strip-shaped holes 4 a extend along the length direction of the elastic buffer sheet 41 , and can break the oil film in the longer direction of the elastic buffer sheet 41 to reduce viscosity.

[0067] For details, please continue to see Figure 1 and Figure 2 In this embodiment, a mounting groove 1b is provided on the valve plate 1, and the exhaust hole 1a is opened on the bottom wall of the mounting groove 1b, and the valve plate 2 and the limiter 3 are both installed in the mounting groove 1b; the buffer portion 4 includes an elastic buffer sheet 41, one end of the buffer spring sheet is installed to the valve plate 1 and is arranged corresponding to the mounting end 21 of the valve plate 2, and the other end extends along the first direction.

[0068] The stopper 3, the valve plate 2 and the elastic buffer plate 41 are all arranged in the installation groove 1b, so that multiple components can be installed in one area, making the entire buffer valve group structure 100 more compact, saving space and simplifying the assembly process.

[0069] The installation groove 1b provides accurate positioning for the stopper 3, the valve plate 2 and the elastic buffer plate 41, ensuring that each component is installed in the correct position. This arrangement helps to ensure that the movement trajectory of the valve plate 2, the deformation trajectory of the elastic buffer plate 41 and the limiting effect of the stopper 3 are more accurate, reducing performance problems caused by position deviation. Each component is more stable during operation, reducing failures caused by loose or falling components.

[0070] In this example, see Figures 2 to 4 In the first direction, the other end of the elastic buffer sheet 41 is arranged beyond the other end of the valve sheet 2 .

[0071] It can be understood that the first direction can be understood as the length direction of the elastic buffer sheet 41. When the other end of the elastic buffer sheet 41 is set beyond the other end of the valve sheet 2 in the first direction, the length of the elastic buffer sheet 41 is set to be greater than the valve sheet 2, ensuring that the valve sheet 2 can hit the middle position of the elastic buffer sheet 41 when it swings.

[0072] With such arrangement, when the valve plate 2 as a whole swings, it is completely buffered by the elastic buffer plate 41 , thereby ensuring a buffering effect.

[0073] It should be noted that the elastic buffer sheet 41 can be a buffer sheet made of elastic material. Of course, the elastic buffer sheet 41 can also rely on overall deformation to play a buffering role.

[0074] For further information, see Figures 2 to 5 In this embodiment, the elastic buffer sheet 41 is spaced apart from the limiter 3 at least in the direction corresponding to the exhaust hole 1a.

[0075] In this way, a clearance space is formed between the elastic buffer sheet 41 and the limiter 3 in the area corresponding to the exhaust hole 1a. When the other end of the valve sheet 2 hits the middle of the elastic buffer sheet 41, the elastic buffer sheet 41 can be deformed toward the clearance space, and achieve buffering by relying on its own overall deformation.

[0076] Compared with the elastic material to achieve buffering, the deformation of the elastic buffer sheet 41 of the present invention is continuous and uniform. Uniform deformation can more effectively absorb and disperse impact energy, reduce local stress concentration, and thus provide a more stable buffering effect. Compared with the use of elastic materials (such as rubber, springs, etc.) to achieve buffering, local deformation may be uneven, especially in the case of high frequency and high impact force, which may easily lead to premature fatigue or failure of certain areas.

[0077] It is understandable that the bending deformation response speed of the elastic buffer sheet 41 is fast, and it can quickly absorb and release energy. In an environment where the valve sheet 2 moves at high speed and vibrates at high frequency, the impact and vibration can be reduced more timely. Compared with the use of elastic materials, the response speed of elastic materials is relatively slow, and it may not be able to provide sufficient buffering effect in time during rapid impact.

[0078] The elastic buffer sheet 41 achieves buffering by bending and deforming as a whole, and its material is usually selected from metal or composite materials with high elasticity and fatigue resistance. It is not easy to age and fatigue in long-term use, and has a long service life. Compared with metal springs, the buffer part 4 made of elastic materials (such as rubber, plastic) is easy to age, harden or soften in long-term use, resulting in reduced buffering effect or even failure.

[0079] The elastic buffer sheet 41 made of metal or composite material can maintain good elasticity and mechanical properties in a wide temperature range and is suitable for use under extreme temperature conditions. The performance of the elastic buffer part 4 will significantly decrease at high or low temperatures, which may lead to poor buffering effect or material damage.

[0080] The method for achieving the spacing between the elastic buffer sheet 41 and the limiter 3 in the direction of the corresponding exhaust hole 1a can be that the middle part of the elastic buffer sheet 41 is set to a curved shape, and the side of the limiter 3 facing the elastic buffer sheet 41 is set to a plane; or the elastic buffer sheet 41 is set to a plane, and the side of the limiter 3 facing the elastic buffer sheet 41 is set to a concave surface; or the sides of the limiter 3 and the elastic buffer sheet 41 that are close to each other are both set to concave surfaces to achieve the spacing between the two.

[0081] For details, please continue to see Figures 2 to 5 In this embodiment, in a direction away from the mounting end 21 of the valve plate 2 , at least a portion of the limiter 3 extends in a direction away from the elastic buffer plate 41 to be spaced apart from the elastic buffer plate 41 .

[0082] Since the stopper 3 itself does not deform, the fixed part of the stopper 3 can provide a more solid support, reduce deformation or displacement caused by external impact, and more accurately control the interval with the elastic buffer sheet 41, ensuring that when the valve sheet 2 swings, the deformation amount and buffering effect of the elastic buffer sheet 41 are more consistent and controllable. If the interval is achieved by relying on the bending of the elastic buffer sheet 41, the buffering effect may be affected due to the uneven deformation of the elastic buffer sheet 41, especially in the case of high frequency and high impact force, which may lead to insufficient local buffering.

[0083] For further information, see Figure 1 and Figure 2 In the present embodiment, the elastic buffer sheet 41 extends a support portion 42 near the other end thereof toward the valve plate 1 , the support portion 42 abuts against the valve plate 1 , and the other end of the elastic buffer sheet 41 abuts against the limiter 3 toward one side of the limiter 3 .

[0084] By setting the support portion 42, the other end of the elastic buffer sheet 41 can be clamped between the limiter 3 and the valve plate 1, and one end of the elastic buffer sheet 41 is clamped between the valve plate 2 and the limiter 3, so that both ends of the elastic buffer sheet 41 are abutted against the two ends of the limiter 3. Such a setting can effectively prevent the elastic buffer sheet 41 from moving, making the elastic buffer sheet 41 more stable.

[0085] It is understandable that the support portion 42 may be formed integrally with the elastic buffer sheet 41 , or may be a component that is separately provided and then mounted on the elastic buffer sheet 41 .

[0086] Specifically, in this embodiment, at least one side portion of the elastic buffer sheet 41 extends toward the valve plate 1 to form a folded edge 421 , and the folded edge 421 forms the supporting portion 42 .

[0087] By forming the elastic buffer sheet 41 and the flanged edge 421 at one time through stamping, bending and other processes, the manufacturing process is simple, the cost is low, and additional connection points can be eliminated, reducing potential failure points. It is avoided that the elastic buffer sheet 41 is fixed by welding, riveting or other methods, which increases the number of connection points.

[0088] There will be no problem of loose connection or falling off between the integrally arranged folded edge 421 and the elastic buffer sheet 41, thereby improving the overall reliability.

[0089] The folded edge 421 is integrally formed with the elastic buffer sheet 41, which can provide better structural strength and rigidity, reduce deformation in high impact and high vibration environments, and avoid stress concentration at the connection point, which may affect the overall structural strength.

[0090] For further information, see Figure 1 and Figure 6 In this embodiment, the mounting groove 1b has a first end wall 1b1 and a second end wall 1b2 which are arranged opposite to each other, and the first end wall 1b1 is arranged corresponding to the mounting end 21 of the valve plate 2; a limiting protrusion 11 is convexly provided on the inner wall of the mounting groove 1b, and the limiting protrusion 11 is spaced apart from the first end wall 1b1; one end of the elastic buffer plate 41 and the mounting end 21 of the valve plate 2 are both convexly provided with a protrusion laterally, and the protrusion is located between the limiting protrusion 11 and the first end wall 1b1.

[0091] The mounting groove 1 b has two opposite end walls, and the first end wall 1 b 1 is arranged corresponding to the mounting end 21 of the valve plate 2 , that is, the mounting end 21 of the valve plate 2 is close to the first end wall 1 b 1 .

[0092] See also Figure 1 One end of the elastic buffer sheet 41 and the mounting end 21 of the valve sheet 2 are both laterally provided with convex portions, the mounting end 21 of the valve sheet 2 is laterally provided with a first convex portion 22, and one end of the elastic buffer sheet 41 is laterally provided with a second convex portion 43.

[0093] The limiting protrusion 11 is protruded on the inner wall of the installation groove 1b, and there is a certain interval between the limiting protrusion 11 and the first end wall 1b1. The limiting protrusion 11 limits the installation position of the valve plate 2 and the elastic buffer plate 41. The protrusions of the valve plate 2 and the elastic buffer plate 41 ensure the fixed position of the valve plate 2 and the elastic buffer plate 41 in the installation groove 1b, ensure that they are installed in the correct area, and prevent them from shifting during operation.

[0094] By setting the cooperation between the limiting protrusion 11 and the protrusion, the precise position of the valve plate 2 and the elastic buffer plate 41 in the installation groove 1b can be ensured, preventing them from being displaced during operation and circumferential movement, thereby improving the stability of the entire valve group structure and improving the operating efficiency and reliability of the system.

[0095] The cooperation between the limiting protrusion 11 and the protrusion also makes the installation of the valve plate 2 and the elastic buffer plate 41 simpler and faster, reducing the assembly time and cost.

[0096] For further information, see Figure 1 and Figure 3 In this embodiment, the limiter 3 is interference fit with the mounting groove 1b.

[0097] There is a slight interference between the outer surface of the stopper 3 and the inner surface of the installation groove 1b, so that the stopper 3 can be firmly fixed in the installation groove 1b after installation without loosening or falling off.

[0098] By making the outer diameter of the limiter 3 slightly larger than the inner diameter of the installation groove 1b, the limiter 3 only needs to apply a certain force to be pressed into the installation groove 1b during installation, thereby ensuring that the limiter 3 is firmly fixed in the installation groove 1b after installation, and the installation is simple.

[0099] The present invention also provides a compressor 200, see Figures 7 to 9 The compressor 200 includes a crankcase 201, a muffler 202 and a buffer valve group structure 100. The specific structure of the buffer valve group structure 100 refers to the above embodiment. Since the compressor 200 adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here.

[0100] Specifically, see Figures 10 to 12 , Fig.10 A comparison diagram of the frequency response of the impact dynamics simulation of the buffer valve group structure provided by the present invention and the buffer valve group structure of the conventional technology; Fig.11A comparison chart of the 1 / 3 octave frequency spectrum of the buffer valve group structure provided by the present invention and the buffer valve group structure of conventional technology in the noise experimental test; Fig.12 This is a comparison chart of the performance experimental test data of the buffer valve group structure provided by the present invention and the buffer valve group structure of conventional technology. Figures 10 to 12 As shown in the comparison diagram, at a frequency of about 2500 Hz to about 3000 Hz, the frequency response produced by the present invention is significantly better than the buffer valve group structure of conventional technology. In terms of cooling capacity and COP performance, the compressor provided by the present invention is also significantly better than the compressor of conventional technology.

[0101] The present invention also proposes a refrigeration device, which includes a heat exchanger and a compressor 200. The specific structure of the compressor 200 refers to the above embodiment. Since the refrigeration device adopts all the technical solutions of all the above embodiments, it has at least all the beneficial effects brought by the technical solutions of the above embodiments, which will not be repeated here one by one.

[0102] The refrigeration device includes a refrigerator, and the refrigerator needs to perform heat exchange during the refrigeration process. The refrigerator can reduce the noise generated by the refrigerator by providing a compressor 200 including the buffer valve group structure 100.

[0103] The above description is only an exemplary embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the technical concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A buffer valve group structure, characterized in that: include: A valve plate, wherein the valve plate is provided with an exhaust hole; a valve sheet mounted on the valve plate, the valve sheet covering the exhaust hole, one end of the valve sheet being a mounting end, the mounting end of the valve sheet being mounted to the valve plate, so that the valve sheet can move in a direction away from the exhaust hole under the action of an external force, and cover the exhaust hole under the action of its own restoring force; a limiter, arranged on a side of the valve plate away from the exhaust hole, for limiting the position of the valve plate during the swinging stroke of the valve plate away from the exhaust hole; and, A buffer portion is arranged between the valve plate and the stopper, the buffer portion comprises an elastic buffer sheet, one end of the buffer sheet is mounted to the valve plate and arranged corresponding to the mounting end of the valve plate, and the other end extends along the first direction; Wherein, a concave portion or a convex portion is provided on a side of the elastic buffer sheet facing the valve sheet.

2. The buffer valve group structure according to claim 1, characterized in that: The elastic buffer sheet is provided with a strip-shaped hole, the strip-shaped hole extends along the length direction of the elastic buffer sheet, and the recess includes the strip-shaped hole.

3. The buffer valve group structure according to claim 1, characterized in that: The valve plate is provided with a mounting groove, the bottom wall of the mounting groove is provided with the exhaust hole, and the valve plate and the limiter are both installed in the mounting groove.

4. The buffer valve group structure according to claim 3, characterized in that: In the first direction, the other end of the elastic buffer sheet is arranged beyond the other end of the valve sheet.

5. The buffer valve group structure according to claim 4, characterized in that: The elastic buffer sheet is spaced apart from the limiter at least in a direction corresponding to the exhaust hole.

6. The buffer valve group structure according to claim 5, characterized in that: In a direction away from the mounting end of the valve plate, at least a portion of the limiter extends in a direction away from the elastic buffer plate to be spaced apart from the elastic buffer plate.

7. The buffer valve group structure according to claim 5, characterized in that: A support portion extends from the elastic buffer sheet near the other end thereof toward the valve plate, the support portion abuts against the valve plate, and the other end of the elastic buffer sheet abuts against the stopper toward one side of the stopper.

8. The buffer valve group structure according to claim 7, characterized in that: At least one side portion of the elastic buffer sheet extends toward the valve plate to form a folded edge, and the folded edge forms the supporting portion.

9. The buffer valve group structure according to claim 3, characterized in that: The stopper is interference fit with the installation groove.

10. A compressor, characterized in that: It comprises the buffer valve group structure as described in any one of claims 1 to 9.

11. A refrigeration device, characterized in that: Comprising the compressor of claim 10.

12. The refrigeration device according to claim 11, characterized in that: The refrigeration equipment includes a refrigerator.

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