Air supplementing structure and compressor

Abstract

The application relates to the technical field of compressors, in particular to a gas supplementing structure and a compressor. The cylinder unit is arranged between two cylinder covers, the middle plate unit is arranged in the cylinder unit, the cylinder unit is provided with a plurality of gas supplementing channels, the plurality of gas supplementing channels are arranged in one-to-one correspondence with a plurality of valve body assemblies, one or more of the end faces of the middle plate unit, the cylinder unit and the cylinder cover are concavely provided with a plurality of grooves, the plurality of grooves are in one-to-one correspondence with the plurality of gas supplementing channels, the grooves are communicated with compression cavities of the cylinder unit, one end of the valve body assembly is fixed in the groove, the other end of the valve body assembly is covered on the outlet of the gas supplementing channel, and the ratio of the planar projection area of the groove to the planar projection area of the valve body assembly is 0.2-3. Compared with the prior art, the gas supplementing structure arranges the valve body assembly in the groove, avoids connection with the compression cavity, limits the projection area of the groove, can reduce the clearance volume of the gas supplementing compressor, and improves the overall energy efficiency of the compressor.

Description

Technical Field

[0001] This invention relates to the field of compressor technology, and more particularly to a gas replenishment structure and compressor. Background Technology

[0002] Gas injection enthalpy enhancement technology is a key method for improving the heating performance of heat pump systems under low-temperature conditions. It is widely used in compressors. Its basic principle is to supplement the compressor's intermediate compression chamber with medium-pressure gas during the compression process. By increasing refrigerant flow and reducing exhaust temperature, it effectively improves the compressor's heating capacity and operational reliability. However, in the practical application of gas injection enthalpy enhancement compressors, the backflow problem in the gas injection channel has always been a significant factor affecting system performance.

[0003] During compressor operation, after the gas injection phase ends, the pressure inside the compression chamber rises rapidly. If the gas injection channel lacks an effective backflow prevention structure, the high-pressure refrigerant can easily flow back along the gas injection channel, not only causing a loss of gas injection volume and reducing enthalpy enhancement, but also potentially causing the compressor to reverse, threatening the safe operation of the compressor. To solve the above-mentioned gas injection backflow problem, existing technologies generally adopt the method of adding a one-way valve (check valve) structure to the gas injection channel. The valve assembly is composed of valve plates, baffles, and fixing components to achieve one-way flow control of the refrigerant in the gas injection channel. That is, refrigerant is allowed to enter the compression chamber during the gas injection phase, and automatically shuts off during the compression phase to prevent backflow.

[0004] However, since the valve assembly is directly connected to the compression chamber, a certain clearance area (i.e., clearance volume) must be reserved at the installation location to ensure the valve plates can open and close normally and to avoid interference with surrounding structures. This clearance area does not participate in the compression cycle during normal compressor operation and cannot effectively compress the refrigerant. Even more disadvantageous is that during the suction phase, the high-pressure gas remaining in the clearance area expands, occupying part of the suction volume, resulting in a reduction in the compressor's actual suction volume and a significant decrease in volumetric efficiency, thus severely impacting the compressor's overall energy efficiency.

[0005] Therefore, there is an urgent need for a gas supply structure and compressor to solve the above-mentioned technical problems. Summary of the Invention

[0006] The purpose of this invention is to propose a gas-injection structure and compressor that can avoid the generation of clearance volume and improve the overall energy efficiency of the compressor.

[0007] To achieve this objective, the present invention adopts the following technical solution: An air-injection structure includes: an intermediate plate unit, a cylinder unit, two cylinder heads, and several valve body assemblies. The cylinder unit is disposed between the two cylinder heads, and the intermediate plate unit is disposed within the cylinder unit. The cylinder unit has several air-injection channels, each corresponding to one of the valve body assemblies. One or more end faces of the intermediate plate unit, the cylinder unit, and the cylinder heads are recessed with several grooves, each corresponding to one of the air-injection channels and communicating with them. The grooves communicate with the compression chamber of the cylinder unit. One end of each valve body assembly is fixed within a groove, and the other end of each valve body assembly covers the outlet of the air-injection channel, enabling the valve body assembly to open or close the air-injection channel according to changes in air pressure. The ratio of the planar projected area of ​​the groove to the planar projected area of ​​the valve body assembly is 0.2 to 3.

[0008] As a preferred technical solution of the above-mentioned air replenishment structure and compressor, the cross-sectional shape of the groove is arc-shaped, and the depth of the groove is no more than 2.5mm.

[0009] As a preferred technical solution of the above-mentioned air replenishment structure and compressor, the intermediate plate unit includes at least one intermediate plate, the cylinder unit includes at least two cylinders connected in series on the same axis, and the intermediate plate is provided between each of the two adjacent cylinders.

[0010] As a preferred technical solution of the above-mentioned air replenishment structure and compressor, the valve body assembly includes a fixing member and a valve plate. The groove is recessed on the end face of the intermediate plate near the cylinder. One end of the fixing member passes through the intermediate plate and one end of the valve plate in sequence and is connected to the cylinder to fix one end of the valve plate between the cylinder and the intermediate plate.

[0011] As a preferred technical solution of the above-mentioned air replenishment structure and compressor, the valve body assembly includes a fixing member and a valve plate. The end face of the cylinder near the intermediate plate is recessed with the groove. One end of the fixing member passes through the cylinder and one end of the valve plate in sequence and is connected to the intermediate plate to fix one end of the valve plate between the cylinder and the intermediate plate.

[0012] As a preferred technical solution of the above-mentioned air replenishment structure and compressor, the valve body assembly includes a fixing member and a valve plate. The end face of the cylinder near the cylinder head is recessed with the groove. One end of the fixing member passes through the cylinder in sequence, and one end of the valve plate is connected to the cylinder head to fix one end of the valve plate between the cylinder and the cylinder head.

[0013] As a preferred technical solution of the above-mentioned air replenishment structure and compressor, the valve body assembly includes a fixing member and a valve plate. The cylinder head has a recessed groove on the end face near the cylinder. One end of the fixing member passes through the cylinder head and one end of the valve plate in sequence and is connected to the cylinder to fix one end of the valve plate between the cylinder and the cylinder head.

[0014] As a preferred technical solution of the above-mentioned air replenishment structure and compressor, the component with the recessed groove has a relief groove recessed on the side end face away from the groove, and the other end of the fixing member is disposed in the relief groove.

[0015] As a preferred technical solution for the above-mentioned air replenishment structure and compressor, the fixing component is a bolt or rivet.

[0016] A compressor includes a housing, characterized in that the compressor further includes an air supply structure as described in the preferred embodiment above, the air supply structure being disposed within the housing.

[0017] Beneficial effects of this invention: This invention provides a gas-injection structure and a compressor. The gas-injection structure includes: an intermediate plate unit, a cylinder unit, two cylinder heads, and several valve body assemblies. The cylinder unit is disposed between the two cylinder heads, and the intermediate plate unit is disposed within the cylinder unit. The cylinder unit has several gas-injection channels, each corresponding to a specific valve body assembly. One or more end faces of the intermediate plate unit, the cylinder unit, and the cylinder heads are recessed with several grooves, each corresponding to a specific gas-injection channel and communicating with it. The grooves communicate with the compression chamber of the cylinder unit. One end of each valve body assembly is fixed within a groove, and the other end of the valve body assembly covers the outlet of the gas-injection channel, enabling the valve body assembly to open or close the gas-injection channel according to changes in air pressure. The ratio of the planar projected area of ​​the groove to the planar projected area of ​​the valve body assembly is 0.2 to 3. Compared to existing technologies, this gas replenishment structure places the valve body assembly within a groove, avoiding connection to the compression chamber and preventing clearance volume from being generated within the compression chamber. At the same time, it limits the ratio of the planar projected area of ​​the groove to the planar projected area of ​​the valve body assembly to 0.2~3, which can reduce the clearance volume of the gas replenishment compressor and improve the overall energy efficiency of the compressor. Attached Figure Description

[0018] To more clearly illustrate the technical solutions in the embodiments of the present invention, the accompanying drawings used in the description of the embodiments of the present invention will be briefly introduced below. Obviously, the accompanying drawings described below are only some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on the content of the embodiments of the present invention and these drawings without creative effort.

[0019] Figure 1This is a structural cross-sectional view of the compressor pump body structure provided in an embodiment of the present invention; Figure 2 This is a cross-sectional view of the gas replenishment structure provided in an embodiment of the present invention.

[0020] In the picture: 1. Cylinder head; 2. Valve body assembly; 21. Fixing component; 22. Valve plate; 3. Air supply channel; 4. Groove; 5. Intermediate plate; 51. Clearance groove; 6. Cylinder. Detailed Implementation

[0021] The present invention will now be described in further detail with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the invention and not intended to limit it. Furthermore, it should be noted that, for ease of description, the accompanying drawings show only the parts relevant to the present invention, and not all of the structures.

[0022] In the description of this invention, unless otherwise explicitly specified and limited, the terms "connected," "linked," and "fixed" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this invention based on the specific circumstances.

[0023] In this invention, unless otherwise explicitly specified and limited, "above" or "below" the second feature can include direct contact between the first and second features, or contact between the first and second features through another feature between them. Furthermore, "above," "over," and "on top" of the second feature includes the first feature directly above or diagonally above the second feature, or simply indicates that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature includes the first feature directly below or diagonally below the second feature, or simply indicates that the first feature is at a lower horizontal level than the second feature.

[0024] In the description of this embodiment, the terms "upper," "lower," "left," and "right," etc., refer to the orientation or positional relationship shown in the accompanying drawings. They are used only for ease of description and simplification of operation, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on the present invention. In addition, the terms "first" and "second" are used only for distinction in description and have no special meaning.

[0025] like Figure 1 and Figure 2As shown, the present invention provides an air-injection structure and a compressor. The air-injection structure includes: an intermediate plate unit, a cylinder unit, two cylinder heads 1, and several valve body assemblies 2. The cylinder unit is disposed between the two cylinder heads 1, and the intermediate plate unit is disposed inside the cylinder unit. The cylinder unit is provided with several air-injection channels 3, and the several air-injection channels 3 are correspondingly disposed with several valve body assemblies 2. One or more end faces of the intermediate plate unit, the cylinder unit, and the cylinder heads 1 are recessed with several grooves 4, and the several grooves 4 are correspondingly connected to the several air-injection channels 3. The grooves 4 are connected to the compression chamber of the cylinder unit. One end of the valve body assembly 2 is fixed in the groove 4, and the other end of the valve body assembly 2 is covered at the outlet of the air-injection channel 3, so that the valve body assembly 2 can open or close the air-injection channel 3 according to the change of air pressure. The ratio of the planar projected area of ​​the groove 4 to the planar projected area of ​​the valve body assembly 2 is 0.2~3.

[0026] Specifically, the cylinder unit is located between two cylinder heads 1, forming a closed compression space. The intermediate plate unit is installed inside the cylinder unit, serving as a separator and guide. The cylinder unit has several air supply channels 3, which are arranged in a one-to-one correspondence with several valve body assemblies 2, ensuring that each air supply channel 3 is controlled by an independent valve body assembly 2. On the end faces of the intermediate plate unit, the cylinder unit, and the cylinder head 1, one or more end faces are recessed with several grooves 4, which correspond one-to-one with several air supply channels 3 and are interconnected, forming a gas flow path from the air supply channel 3 to the compression chamber. One end of the groove 4 is connected to the compression chamber of the cylinder unit, and the other end is connected to the outlet of the air supply channel 3, thereby establishing a gas passage between the air supply channel 3 and the compression chamber. One end of the valve body assembly 2 is fixedly installed in the groove 4, and the other end is covered at the outlet of the air supply channel 3. The valve body assembly 2 can move slightly along the axial direction in the groove 4. According to the change of air pressure difference between the compression chamber and the air supply channel 3, the air supply channel 3 is automatically opened or closed. When the pressure in the compression chamber is lower than the pressure in the air supply channel 3, the air pressure difference pushes the valve body assembly 2 to open the air supply channel 3, and external air supply enters the compression chamber to achieve the air supply enthalpy increase effect. When the pressure in the compression chamber is higher than or equal to the pressure in the air supply channel 3, the valve body assembly 2 is reset under the action of air pressure and closes the air supply channel 3 to prevent gas backflow. No additional solenoid valve or mechanical drive mechanism is required. The structure is simple, the response is fast, and the reliability is high. Compared to existing technologies, this gas replenishment structure places the valve body assembly 2 within the groove 4, avoiding connection to the compression chamber and preventing the generation of clearance volume within the compression chamber. At the same time, it limits the ratio of the planar projected area of ​​the groove 4 to the planar projected area of ​​the valve body assembly 2 to 0.2~3, which can reduce the clearance volume of the gas replenishment compressor and improve the overall energy efficiency of the compressor.

[0027] Optionally, the cross-sectional shape of the groove 4 is arc-shaped, and the depth of the groove 4 is no more than 2.5mm. This design, compared to a right angle or V-shaped cross-section, effectively avoids stress concentration. When the valve body assembly 2 moves repeatedly within the groove 4, the arc-shaped inner wall can evenly distribute the contact stress, reducing the risk of local fatigue damage and thus extending the service life of the groove 4 and the valve body assembly 2. The arc-shaped cross-section provides a smooth transition surface for gas flow, reducing eddies and resistance losses when gas flows within the groove 4, which is beneficial for rapid gas exchange between the gas supply channel 3 and the compression chamber, improving gas supply efficiency. The groove 4 is located on the end face of the intermediate plate unit, cylinder unit, or cylinder head 1. An excessively deep groove 4 will weaken the effective wall thickness of the base material, reducing structural strength and compressive strength. Controlling the depth to within 2.5mm ensures adequate gas supply efficiency. Under the premise of ensuring sufficient structural strength of the base material, deformation or cracking under high pressure conditions is prevented. The depth of the groove 4 directly determines the axial movement space of the valve body assembly 2 within the groove 4. The depth is no more than 2.5mm, which means that the maximum opening stroke of the valve body assembly 2 is limited to within 2.5mm. This stroke range has been optimized to ensure that the effective opening area of ​​the air supply channel 3 meets the air supply flow requirements, and to prevent excessive displacement of the valve body assembly 2 from causing reset delay or sealing failure. The shallower groove 4 means that the movement distance required for the valve body assembly 2 to go from closed to fully open is shorter, thereby shortening the response time of the valve body assembly 2 and enabling the air supply channel 3 to open and close more quickly according to changes in air pressure, thus improving the dynamic response performance of the system.

[0028] Optionally, the intermediate plate unit includes at least one intermediate plate 5, and the cylinder unit includes at least two cylinders 6 connected coaxially in series, with an intermediate plate 5 provided between each of the two adjacent cylinders 6.

[0029] Optionally, the valve body assembly 2 includes a fixing member 21 and a valve plate 22. A groove 4 is recessed on the end face of the intermediate plate 5 near the cylinder 6. One end of the fixing member 21 passes through the intermediate plate 5 and one end of the valve plate 22 sequentially, connecting to the cylinder 6 to fix one end of the valve plate 22 between the cylinder 6 and the intermediate plate 5. Specifically, the fixing member 21 is a rod-shaped or bolt-shaped structural component used to fix the valve plate 22 in a predetermined position. One end of the fixing member 21 is provided with a threaded or snap-fit ​​structure, which can cooperate with the corresponding mounting hole on the cylinder 6 to achieve a reliable connection. The valve plate 22 is a thin sheet-like elastic element, typically made of spring steel, stainless steel, or high-performance engineering plastic, possessing a certain elastic deformation capacity. One end of the valve plate 22 is a fixed end, pressed and fixed by the fixing member 21; the other end is a free end, capable of elastic deformation under air pressure, realizing the opening and closing of the air supply channel 3. In this embodiment, the intermediate plate 5 has two end faces. A groove 4 is formed on the end face near the cylinder 6. The opening of the groove 4 faces the cylinder 6, providing a space for the valve plate 22 to accommodate and move. The fixing member 21 first passes through a pre-set mounting through hole on the intermediate plate 5. The position of the mounting through hole corresponds to the position of the groove 4, ensuring that the fixing member 21 can accurately enter the groove 4 area. The fixing member 21 continues to pass through one end of the valve plate 22. A through hole or opening groove matching the fixing member 21 is opened on the fixing end of the valve plate 22 for the fixing member 21 to pass through. The end of the fixing member 21 is finally connected to the threaded hole or snap-fit ​​hole on the cylinder 6, and is fixed by tightening or pressing.

[0030] Optionally, the component with the recessed groove 4 has a relief groove 51 recessed on the side facing away from the groove 4, and the other end of the fastener 21 is disposed in the relief groove 51; the fastener 21 is a bolt or rivet. Specifically, this embodiment provides the following exemplary solution: the end of the intermediate plate 5 away from the cylinder 6 is recessed in the relief groove 51, the intermediate plate 5 has two end faces, wherein the end near the cylinder 6 is recessed with a groove 4 for accommodating the valve plate 22, and the other end away from the cylinder 6 (i.e., the side facing away from the cylinder 6) is recessed with the relief groove 51; the relief groove 51 and the groove 4 are arranged opposite to each other in the thickness direction of the intermediate plate 5, and are separated by a solid material layer of the intermediate plate 5, the opening direction of the relief groove 51 is opposite to that of the groove 4, facing the outside of the intermediate plate 5; the relief groove 5 The cross-sectional shape of 1 can be circular, square, or irregularly shaped to match the head shape of the fastener 21. Its depth and diameter are determined according to the size of the other end of the fastener 21 (i.e., the head of the fastener 21), and are usually slightly larger than the outer dimensions of the head of the fastener 21 to provide sufficient accommodating space. The bottom surface of the clearance groove 51 is a plane, which can be designed to match the contact surface of the bolt head to ensure that the bolt head can fit smoothly. The edges of the clearance groove 51 can be chamfered or rounded to avoid sharp edges causing damage to operators or adjacent parts. With this configuration, the other end of the fastener 21 (such as the bolt head) is completely recessed into the relief groove 51 and does not protrude from the end face of the intermediate plate 5, thereby avoiding spatial interference with adjacent components and ensuring the compactness of the overall assembly; the relief groove 51 accommodates the end of the fastener 21 internally, protecting it from direct contact with external collisions, wear, or corrosive media, thus extending the service life of the fastener 21; the relief groove 51 provides operating space for assembly and disassembly tools (such as wrenches, screwdrivers, or Allen wrenches), making the tightening and loosening of the fastener 21 more convenient; the end of the fastener 21 is recessed into the relief groove 51, keeping the outer surface of the intermediate plate 5 flat, resulting in a cleaner and more aesthetically pleasing overall appearance.

[0031] Optionally, the valve body assembly 2 includes a fixing member 21 and a valve plate 22. A groove 4 is recessed on the end face of the cylinder 6 near the intermediate plate 5. One end of the fixing member 21 passes through the cylinder 6 and one end of the valve plate 22 sequentially, connecting to the intermediate plate 5 to fix one end of the valve plate 22 between the cylinder 6 and the intermediate plate 5. Specifically, in some other embodiments, the cylinder 6 has two end faces, with a groove 4 machined on the end face near the intermediate plate 5. The opening of the groove 4 faces the intermediate plate 5, providing a receiving space and movement space for the valve plate 22. The fixing member 21 first passes through a pre-set mounting hole on the cylinder 6, the position of which corresponds to the position of the groove 4, ensuring that the fixing member 21 can accurately enter the groove 4 area. The fixing member 21 continues to pass through one end of the valve plate 22. The end of the fixing member 21 finally connects to a threaded hole or snap-fit ​​hole on the intermediate plate 5, achieving fixation by tightening or pressing.

[0032] Optionally, the valve body assembly 2 includes a fixing member 21 and a valve plate 22. A groove 4 is recessed on the end face of the cylinder 6 near the cylinder head 1. One end of the fixing member 21 passes through the cylinder 6 and the end of the valve plate 22 sequentially, connecting to the cylinder head 1 to fix one end of the valve plate 22 between the cylinder 6 and the cylinder head 1. Specifically, in some other embodiments, the cylinder 6 has two end faces, with a groove 4 machined on the end face near the cylinder head 1. The opening of the groove 4 faces the cylinder head 1, providing a receiving space and movement space for the valve plate 22. The fixing member 21 first passes through a pre-set mounting hole on the cylinder 6, the position of which corresponds to the position of the groove 4, ensuring that the fixing member 21 can accurately enter the groove 4 area. The fixing member 21 continues to pass through one end of the valve plate 22. The end of the fixing member 21 finally connects to a threaded hole or snap-fit ​​hole on the cylinder head 1, achieving fixation by tightening or pressing.

[0033] Optionally, the valve body assembly 2 includes a fixing member 21 and a valve plate 22. The cylinder head 1 has a recessed groove 4 on its end face near the cylinder 6. One end of the fixing member 21 passes through the cylinder head 1 and one end of the valve plate 22 in sequence and connects to the cylinder 6 to fix one end of the valve plate 22 between the cylinder 6 and the cylinder head 1. Specifically, in some other embodiments, the cylinder head 1 has two end faces, wherein a groove 4 is formed on the end face near the cylinder 6. The opening of the groove 4 faces the cylinder 6, providing a receiving space and movement space for the valve plate 22. The fixing member 21 first passes through a preset mounting through hole on the cylinder head 1. The position of the mounting through hole corresponds to the position of the groove 4 to ensure that the fixing member 21 can accurately enter the groove 4 area. The fixing member 21 continues to pass through one end of the valve plate 22. The end of the fixing member 21 is finally connected to a threaded hole or snap-fit ​​hole on the cylinder 6 and fixed by tightening or pressing.

[0034] The present invention also provides a compressor, including a housing, and the compressor further includes the gas replenishment structure in the above embodiments, the gas replenishment structure being disposed within the housing, and the compressor further includes other essential components that constitute a compressor in the prior art.

[0035] Furthermore, the above description is merely a preferred embodiment of the present invention and the technical principles employed. Those skilled in the art will understand that the present invention is not limited to the specific embodiments described herein, and various obvious changes, readjustments, and substitutions can be made without departing from the scope of protection of the present invention. Therefore, although the present invention has been described in detail through the above embodiments, the present invention is not limited to the above embodiments, and may include many other equivalent embodiments without departing from the concept of the present invention, the scope of which is determined by the scope of the appended claims.

Claims

1. A gas-replenishing structure, characterized in that, include: The system comprises an intermediate plate unit, a cylinder unit, two cylinder heads (1), and several valve body assemblies (2). The cylinder unit is disposed between the two cylinder heads (1), and the intermediate plate unit is disposed within the cylinder unit. The cylinder unit is provided with several air supply channels (3), and the air supply channels (3) are correspondingly disposed with several valve body assemblies (2). One or more of the end faces of the intermediate plate unit, the cylinder unit, and the cylinder head (1) are recessed with several grooves (4), and the grooves (4) are correspondingly connected with the air supply channels (3). The grooves (4) are connected to the compression chamber of the cylinder unit. One end of the valve body assembly (2) is fixed in the groove (4), and the other end of the valve body assembly (2) is covered at the outlet of the air supply channel (3) so that the valve body assembly (2) can open or close the air supply channel (3) according to the change of air pressure. The ratio of the planar projected area of ​​the groove (4) to the planar projected area of ​​the valve body assembly (2) is 0.2~3.

2. The gas-replenishing structure according to claim 1, characterized in that, The groove (4) has an arc-shaped cross-section and a depth of no more than 2.5 mm.

3. The gas-replenishing structure according to claim 1, characterized in that, The intermediate plate unit includes at least one intermediate plate (5), and the cylinder unit includes at least two cylinders (6) connected in series on the same axis, with the intermediate plate (5) provided between each of the two adjacent cylinders (6).

4. The gas-replenishing structure according to claim 3, characterized in that, The valve body assembly (2) includes a fixing member (21) and a valve plate (22). The intermediate plate (5) has a recessed groove (4) on its end face near the cylinder (6). One end of the fixing member (21) passes through the intermediate plate (5) in sequence, and one end of the valve plate (22) is connected to the cylinder (6) to fix one end of the valve plate (22) between the cylinder (6) and the intermediate plate (5).

5. The gas-replenishing structure according to claim 3, characterized in that, The valve body assembly (2) includes a fixing member (21) and a valve plate (22). The cylinder (6) has a recessed groove (4) on its end face near the intermediate plate (5). One end of the fixing member (21) passes through the cylinder (6) in sequence, and one end of the valve plate (22) is connected to the intermediate plate (5) to fix one end of the valve plate (22) between the cylinder (6) and the intermediate plate (5).

6. The gas-replenishing structure according to claim 3, characterized in that, The valve body assembly (2) includes a fixing member (21) and a valve plate (22). The cylinder (6) has a recessed groove (4) on its end face near the cylinder head (1). One end of the fixing member (21) passes through the cylinder (6) in sequence, and one end of the valve plate (22) is connected to the cylinder head (1) to fix one end of the valve plate (22) between the cylinder (6) and the cylinder head (1).

7. The gas-replenishing structure according to claim 3, characterized in that, The valve body assembly (2) includes a fixing member (21) and a valve plate (22). The cylinder head (1) has a recessed groove (4) on its end face near the cylinder (6). One end of the fixing member (21) passes through the cylinder head (1) in sequence, and one end of the valve plate (22) is connected to the cylinder (6) to fix one end of the valve plate (22) between the cylinder (6) and the cylinder head (1).

8. The gas-replenishing structure according to any one of claims 4-7, characterized in that, The component with the recessed groove (4) has a relief groove (51) recessed on one end face away from the recessed groove (4), and the other end of the fixing member (21) is disposed in the relief groove (51).

9. The gas-replenishing structure according to any one of claims 4-7, characterized in that, The fastener (21) is a bolt or rivet.

10. A compressor, comprising a housing, characterized in that, The compressor further includes a gas replenishment structure as described in any one of claims 1-9, the gas replenishment structure being disposed within the housing.

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