Breathing assembly of totally-closed reciprocating piston type compressor and compressor

Abstract

The invention provides a breathing assembly of a totally-closed reciprocating piston type compressor and the compressor, relates to the field of compressors, and aims to solve the problem that the working efficiency of the compressor is affected due to the fact that a breathing assembly of an existing compressor is prone to leakage from the three aspects of structural design, material selection and a connecting process. The air suction silencer body is combined with a connector of a split type stamping structure, so that the air suction silencer body is compact, leakage is reduced, and the outer side of the air suction silencer body is sprayed with a heat insulation material to reduce the heat influence of high heat of a motor on the air suction silencer body. Stamping parts with similar or same material attributes are selected for the cylinder cover, the connector and the valve set, the air tightness after matching of the three parts is improved, and the heat dissipation performance of the cylinder cover is improved. The cylinder cover, the connector and the valve group are matched in a welding manner, so that the components are tightly connected, and reliable sealing connection is formed; an inspiration part and an expiration part are fused, and the leakage risk caused by the poor assembly relation of all part units in a split type structure is reduced.

Description

Technical Field

[0001] The present invention relates to the field of compressors, and particularly to a breathing component and a compressor of a hermetic reciprocating piston compressor. Background Art

[0002] The existing breathing components of compressors adopt a split structure. By separating the suction component from the exhaust component, they cooperate with each other through a valve plate. The valve plate is provided with suction and exhaust holes, and suction valve sheets and exhaust valve sheets are arranged on both sides of the suction and exhaust holes. A gasket is used to cooperate between the valve plate and the cylinder head that changes the exhaust direction to prevent the leakage of the exhausted gas. Due to the large number of related parts of the breathing components, it is difficult to effectively ensure the assembly relationship between them. At the same time, the suction and exhaust losses are large, affecting the refrigeration efficiency of the compressor.

[0003] A combined muffler cylinder head device is disclosed in a Chinese patent (publication number CN218266241U, publication date January 10, 2023). By using the structure that the end face of the muffler head and the large plane of the cylinder head are in the same plane, a convex and concave flange connection is adopted at the connection between the suction muffler main body and the combined cylinder head to tightly connect the suction muffler and the combined cylinder head, avoiding the problem that gaps are easily generated during the assembly of the suction muffler and the cylinder head in the prior art. At the same time, it improves the ability of the valve group to resist the influence of screw torque, thereby improving the airtightness; however, it is still a single-way optimization from the structure. Since there are many related parts of the breathing components, there are also problems of insufficient sealing due to poor assembly relationships between the valve group and the cylinder head, and between the valve group and the suction muffler, resulting in a reduction in the operating efficiency of the compressor; in addition, the material of the cylinder head is aluminum alloy. Due to its relatively soft material itself, when tightened with screws, plastic deformation occurs at the pressing place, resulting in a reduction in the effective tightening torque and leading to leakage problems. The muffler uses a plastic of an integral material, and affected by heat radiation, the suction efficiency is low. Summary of the Invention

[0004] The purpose of the present invention is to address the defects existing in the prior art, and provide a breathing component and a compressor of a hermetic reciprocating piston compressor. The suction muffler component uses a connector of a split stamping structure to combine the suction muffler body, making the suction muffler component tight and reducing leakage. An adiabatic material is sprayed on the outside of the suction muffler body to reduce the thermal influence of the high heat of the motor on the suction muffler component; the cylinder head, the connector, and the valve group are made of stamping parts with similar or the same material properties to improve the airtightness after the three are combined and improve the heat dissipation performance of the cylinder head; welding cooperation is adopted among the cylinder head, the connector, and the valve group to make the component connections tight and form a reliable sealed connection; through the combination of the three aspects, an integral structure is formed, fusing the suction part and the exhaust part, reducing the leakage risk caused by the poor assembly relationship of each part unit in the split structure.

[0005] The first object of the present invention is to provide a breathing component for a fully enclosed reciprocating piston compressor, adopting the following solution:

[0006] A cylinder head, provided with heat dissipation ribs;

[0007] A valve group, including a valve plate and valve sheets installed on the suction holes and exhaust holes of the valve plate, and the valve plate is welded and sealed with the cylinder head;

[0008] A suction silencer component, including a connector and a suction silencer body. The connector is a cylindrical structure formed by splicing after separate stamping of components. One end of the connector is butted against the valve plate and welded and sealed, and the other end is butted and communicated with the suction silencer body; the side of the suction silencer body close to the motor is sprayed with heat-insulating material; the cylinder head, valve group and connector are made of the same material.

[0009] Further, the butting position between the suction silencer body and the connector is connected and sealed by a wedge-shaped groove structure fit, welding and / or gluing.

[0010] Further, the components forming the connector are spliced and then welded and sealed, and the connector is made of iron material.

[0011] Further, the valve plate and the cylinder head are spliced in a groove shape and welded and sealed.

[0012] Further, the connector and the valve plate are welded by projection resistance welding.

[0013] Further, the cylinder head is formed by stamping, and multiple ribs are formed on the outer surface.

[0014] Further, the cylinder head is made of stainless steel material.

[0015] Further, the valve plate is formed by stamping, and the valve sheets are welded to the valve plate.

[0016] The second object of the present invention is to provide a compressor, using the breathing component of the fully enclosed reciprocating piston compressor as in the first object.

[0017] Further, the valve group and the cylinder head are fixed to the frame of the compressor by fastening screws, and the valve group cooperates with the compressor cylinder.

[0018] Compared with the prior art, the advantages and positive effects of the present invention are:

[0019] In view of the problem that the breathing components of the current compressor are prone to leakage, which affects the working efficiency of the compressor, starting from three aspects: structural design, material selection, and connection process. In terms of structural design, the suction silencer component adopts a split stamping structure connecting head to combine with the suction silencer body, making the suction silencer component tight and reducing leakage. The outer side of the suction silencer body is sprayed with heat-insulating material to reduce the thermal influence of the high heat of the motor on the suction silencer component. In terms of material selection, the cylinder head, connecting head, and valve group are made of stamped parts with similar or the same material properties, improving the airtightness after the cooperation of the three and enhancing the heat dissipation performance of the cylinder head. In terms of connection process, welding is used for the cooperation among the cylinder head, connecting head, and valve group, making the components tightly connected and forming a reliable sealed connection. Through the combination of these three aspects, an integrated structure is formed, integrating the suction part and the exhaust part, reducing the leakage risk caused by the poor assembly relationship of each part unit in the split structure.

[0020] Raised rib structures are stamped on the cylinder head to increase the heat dissipation area, accelerate heat dissipation, effectively reduce the cylinder head temperature, reduce carbon deposition on the valve plate and valve piece, ensure the normal operation of the valve piece, and maintain the stable suction and exhaust functions of the compressor. The outer side of the suction silencer body is sprayed with heat-insulating material to reduce the influence of the motor heat radiation on the gas in the silencer, lower the gas temperature, and improve the suction efficiency. The two work together to make the suction process more stable and efficient, avoiding affecting the compressor performance due to poor suction or valve piece failure. During the continuous operation of the compressor, a stable suction process can ensure sufficient gas intake and maintain normal compression and refrigeration cycles. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] The accompanying drawings forming a part of this specification are used to provide a further understanding of the present invention. The schematic embodiments and descriptions thereof of the present invention are used to explain the present invention and do not constitute an improper limitation to the present invention.

[0022] Figure 1 It is a schematic structural diagram of the breathing components of a hermetic reciprocating piston compressor in one or more embodiments of the present invention.

[0023] Figure 2 It is a schematic diagram of the suction silencer component in one or more embodiments of the present invention.

[0024] Figure 3 is Figure 2 a partial enlarged view of part A in

[0025] Figure 4 It is a schematic diagram of the suction silencer body in one or more embodiments of the present invention.

[0026] Figure 5 It is a schematic structural diagram of the cylinder head in one or more embodiments of the present invention.

[0027] Figure 6Schematic diagram of the valve plate in one or more embodiments of the present invention.

[0028] Figure 7 Schematic diagram of installing valve pieces on the valve plate in one or more embodiments of the present invention.

[0029] Wherein, 1. Cylinder; 2. Fastening screw; 3. Cylinder head; 4. Valve group; 5. Suction silencer component; 6. Motor; 7. Connector; 8. Suction port; 9. Rib; 10. Valve plate; 11. Exhaust valve piece; 12. Suction hole; 13. Suction valve piece; 14. Exhaust hole; 15. Thermal insulation layer. Detailed implementation mode

[0030] Embodiment 1

[0031] In a typical embodiment of the present invention, as Figures 1-7 shown, a breathing component of a hermetic reciprocating piston compressor is provided.

[0032] The breathing component of the existing compressor adopts a split structure, with many parts and it is difficult to ensure the assembly relationship. There is insufficient sealing between the valve group 4 and the cylinder head 3, and between the valve group 4 and the suction silencer, resulting in leakage and affecting the operating efficiency of the compressor. Based on this, this embodiment provides a breathing component of a hermetic reciprocating piston compressor. The connector 7 of the suction silencer component 5 adopts a split stamping and then assembled cylindrical structure, and is welded and sealed to the valve plate 10 and the suction silencer body respectively; the valve plate 10 is welded and sealed to the cylinder head 3. Through welding, the connection of each component is tightened, reducing the risk of leakage. The cylinder head 3, the valve group 4 and the connector 7 are made of the same material to ensure similar material properties and improve the airtightness after the cooperation of the three. The cylinder head 3 is provided with heat dissipation ribs 9 to increase the heat dissipation area and improve the heat dissipation performance; the side of the suction silencer body close to the motor 6 is sprayed with thermal insulation material to reduce the influence of the heat radiation of the motor 6 on the suction silencer.

[0033] As Figures 1-7 shown, the breathing component of the hermetic reciprocating piston compressor mainly includes the cylinder head 3, the valve group 4, and the suction silencer component 5. Starting from three aspects of structural design, material selection, and heat dissipation and heat insulation treatment, it effectively solves the problems of the existing technology and improves the performance of the compressor.

[0034] The valve group 4 includes a valve plate 10 and valve sheets installed at the air suction holes 12 and air exhaust holes 14 of the valve plate 10. The valve plate 10 and the cylinder head 3 are hermetically sealed by welding. The air suction silencer component 5 includes a connector 7 and an air suction silencer body. The connector 7 adopts a split-type cylindrical structure formed by stamping and splicing, making the manufacturing of the connector 7 more flexible and capable of improving its structural strength. One end of the connector 7 is hermetically sealed to the valve plate 10 by welding, and the other end is butt-connected and communicated with the air suction silencer body. The welding and sealing method reduces the gas leakage channels, enhances the sealing performance of the air suction silencer component 5, and ensures the stability of the air suction process. By welding, the valve plate 10 and the cylinder head 3 are closely combined. Compared with the traditional gasket matching, the welding sealing effect is better, effectively preventing gas leakage and ensuring the normal progress of the air suction and exhaust processes.

[0035] The cylinder head 3, the valve group 4, and the connector 7 are made of the same material. The same material enables them to have similar thermal expansion coefficients, mechanical properties, etc. During the working process, the problem of inconsistent deformation caused by material differences is reduced, and they can cooperate better with each other, improving the airtightness after the three are combined. When subjected to temperature changes and pressure fluctuations, each component deforms synchronously, maintaining a good sealing state and ensuring the stable operation of the compressor.

[0036] In other optional embodiments, the cylinder head 3, the valve group 4, and the connector 7 are made of materials with similar material properties, and are assembled by forming stamped parts.

[0037] The cylinder head 3 is provided with heat dissipation ribs 9 to accelerate heat dissipation by increasing the surface area. When the compressor is working, a large amount of heat accumulates in the cylinder head 3. The heat dissipation ribs 9 increase the heat dissipation area, improve the heat dissipation efficiency, reduce the temperature of the cylinder head 3, reduce the risk of carbon deposition on the valve plate 10 and the valve sheets caused by high temperature, extend the service life of the components, and ensure the stable performance of the compressor. An insulating material is sprayed on one side of the air suction silencer body close to the motor 6 to form an insulating layer 15. The air suction silencer body is also provided with an air suction port 8 for sucking in the refrigeration medium. The heat radiation generated when the motor 6 works will affect the gas temperature in the air suction silencer, and thus affect the air suction efficiency. In this embodiment, the insulating material can effectively block the heat radiation, reduce the gas temperature in the air suction silencer, improve the air suction efficiency, reduce the air suction loss, and enhance the overall refrigeration efficiency of the compressor.

[0038] Such as Figure 1As shown, the connection part between the intake silencer body and the connector 7 is prone to leakage, which affects the intake efficiency and the overall performance of the compressor. In this embodiment, the docking position between the intake silencer body and the connector 7 is connected and sealed through the cooperation of a wedge-shaped groove structure, welding, and / or bonding. It is also possible to use the cooperation of the wedge-shaped groove structure according to requirements and combine welding or bonding after the cooperation. The wedge-shaped groove structure increases the tightness and stability of the connection, making the two components fit better; welding and bonding further enhance the sealing effect, reduce the possibility of gas leakage, significantly improve the sealing performance between the intake silencer body and the connector 7, ensure that gas does not leak during the intake process, guarantee the intake efficiency, and thus improve the refrigeration effect of the compressor. The stable connection structure also helps to reduce the vibration and friction between components and extends the service life.

[0039] As Figure 2 , Figure 3 and Figure 4 As shown, the connector 7, as a key part of the intake silencer component 5, needs to have sufficient strength and good sealing performance. The components of the connector 7 are joined together and sealed by welding. Made of iron material, the connector 7 includes a first arc-shaped plate and a second arc-shaped plate, and the cylindrical connector 7 is obtained by the joining of the two arc-shaped plates. Welding and sealing ensure the airtightness inside the connector 7 and prevent gas leakage; the iron material has good strength and processing performance, is easy to manufacture, and uses the same material as the valve group 4 and cylinder head 3 it cooperates with to improve the airtightness after cooperation.

[0040] Welding and sealing make the connector 7 a whole, enhancing the structural strength and sealing performance, and meeting the requirements for gas transmission during the intake process.

[0041] The traditional connection method between the valve plate 10 and the cylinder head 3 has a poor sealing effect and is prone to leakage, which affects the intake and exhaust functions of the compressor. In this embodiment, the valve plate 10 and the cylinder head 3 are joined by a groove-shaped joint and welded and sealed. The groove-shaped joint increases the connection area, makes the welding more firm, and has better sealing performance. It effectively improves the sealing performance between the valve plate 10 and the cylinder head 3, reduces gas leakage, ensures the normal progress of the intake and exhaust processes, and improves the working efficiency and stability of the compressor.

[0042] The connection between the connector 7 and the valve plate 10 needs to ensure the sealing performance and connection strength to ensure the stability of the intake process. In this embodiment, projection resistance welding is used between the connector 7 and the valve plate 10. Projection resistance welding can generate a large amount of heat in a small welding area, quickly melt and fuse the welding part, and form a firm connection. It not only improves the connection strength between the connector 7 and the valve plate 10 but also enhances the sealing performance, reduces the risk of gas leakage, ensures the stable transmission of gas during the intake process, and improves the intake efficiency of the compressor.

[0043] The existing cylinder head 3 has poor heat dissipation performance, and the material is soft, which is prone to plastic deformation during fastening, affecting the sealing effect and the performance of the compressor. In this embodiment, the cylinder head 3 is formed by stamping, and multiple convex ribs 9 are formed on the outer surface. The stamping process can enable the cylinder head 3 to obtain the required shape and dimensional accuracy. The convex rib 9 structure increases the heat dissipation area, and at the same time, the convex rib 9 also increases the strength of the cylinder head 3.

[0044] The convex rib 9 structure effectively improves the heat dissipation performance of the cylinder head 3, reduces the cylinder head temperature, reduces the risk of carbon deposition on the valve plate 10 and the valve sheet, and improves the reliability and service life of the compressor. The stamping process ensures the dimensional accuracy and structural strength of the cylinder head 3, which helps to improve the assembly accuracy and sealing performance.

[0045] The material of the aluminum alloy cylinder head 3 is soft, and it is prone to plastic deformation during fastening, resulting in leakage, and it has poor heat dissipation ability. In this regard, in this embodiment, the cylinder head 3 is made of stainless steel. Stainless steel has relatively high hardness and strength, is not prone to plastic deformation, and at the same time has good heat dissipation performance. The cylinder head 3 made of stainless steel has little plastic deformation during fastening, can ensure good sealing performance, and reduce leakage. Its good heat dissipation performance helps to reduce the cylinder head temperature and improve the overall performance and stability of the compressor.

[0046] The valve plate 10 needs to have a certain strength and accuracy to ensure the normal operation of the valve sheet. At the same time, the connection between the valve sheet and the valve plate 10 should be firm and reliable. In this embodiment, the valve plate 10 is formed by stamping, and the valve sheet is welded to the valve plate 10. Stamping can enable the valve plate 10 to obtain relatively high strength and accuracy, meeting the requirements for the valve plate 10 during the suction and exhaust processes; the welding method firmly fixes the valve sheet on the valve plate 10 to ensure the normal movement of the valve sheet.

[0047] In this embodiment, the valve plate 10 is provided with a suction hole 12 and an exhaust hole 14. An intake valve sheet 13 is fitted on the suction hole 12, and an exhaust valve sheet 11 is fitted on the exhaust hole 14. The stamping-formed valve plate 10 ensures its structural strength and accuracy, providing a good foundation for the normal operation of the valve sheet. The valve sheet and the valve plate 10 connected by welding are firmly connected, reducing the risk of the valve sheet loosening or falling off, ensuring the normal progress of the suction and exhaust processes, and improving the working efficiency of the compressor.

[0048] The existing split breathing component has a poor assembly relationship, which is prone to cause the valve sheet to break and trigger compressor failures. In this embodiment, the valve group 4, the cylinder head 3, and the suction silencer component 5 are assembled and then welded to form an integrated structure, integrating the parts with complex assembly, improving the assembly relationship, enhancing the assembly efficiency, and reducing the risk of failures caused by poor assembly. The integrated cylinder head assembly with a welded structure and the optimized connection method ensure that there is no leakage between the suction side and the exhaust side, improving the airtightness.

[0049] In this embodiment, starting from multiple aspects such as structural design, material selection, and connection process, the leakage problem of the breathing component of the existing reciprocating piston compressor is effectively solved.

[0050] For optimizing the overall structural design, an integrated structure is adopted to integrate the suction part and the exhalation part, avoiding the leakage risk caused by the poor assembly relationship of each part unit in the split structure. The cylinder head 3, the suction muffler component 5 connecting elbow, and the valve group 4 are designed as stamping parts of the same material or similar material properties to form an integrated cylinder head assembly, reducing the gaps between components and reducing the possibility of leakage from the overall structure.

[0051] And the connection process is improved. In the integrated cylinder head assembly, a welding structure is adopted to ensure the airtightness of the cooperation among the three. For the welding and mating parts, a resistance welding or fusion welding scheme is first adopted. This welding method makes the components closely connected, forming a reliable sealed connection and effectively preventing gas leakage. The valve plate 10 and the cylinder head adopt a groove-type welding structure, increasing the welding area and sealing performance; the suction muffler connector 7 of the integrated breathing component and the valve plate 10 are welded by projection resistance welding, further improving the sealing effect and connection safety.

[0052] The structure of the suction muffler component 5 is optimized. The connector 7 of the suction muffler component 5 adopts a split stamping structure, and the components forming the connector 7 are welded together by welding, and then the connector 7 and the suction muffler body are connected by welding, adhesive bonding or clamping. The combination of multiple connection methods makes the structure of the suction muffler component 5 itself more compact, reducing the gas leakage channels. The muffler body is made of plastic material, and an adiabatic material is sprayed on its outer side to form an adiabatic layer 15, which not only improves the suction efficiency but also reduces the difference in thermal expansion and contraction of the components caused by temperature changes, avoiding leakage caused by gaps generated due to thermal expansion and contraction.

[0053] Appropriate materials are selected to make the components. The cylinder head 3 is made of stainless steel plate instead of the original aluminum alloy material. The stainless steel plate has strong formability and high hardness, with little plastic deformation when fastened with screws, and can maintain a stable pressing force, effectively avoiding the leakage problem caused by insufficient pressing force and improving the overall sealing performance.

[0054] Through the combination of multiple aspects, an integrated structure is formed to integrate the suction part and the exhalation part, reducing the leakage risk caused by the poor assembly relationship of each part unit in the split structure.

[0055] Embodiment 2

[0056] In another typical embodiment of the present invention, as Figures 1-7 shown, a compressor is given, which uses the breathing component of the fully enclosed reciprocating piston compressor as in Embodiment 1.

[0057] A compressor, the core of which lies in utilizing the breathing component of the hermetic reciprocating piston compressor as in Embodiment 1, aiming to optimize the overall performance through this breathing component and solve problems existing in existing compressors such as complex assembly, leakage, low efficiency, etc.

[0058] Due to defects in the breathing component of existing compressors, the overall performance is poor, such as low refrigeration efficiency, poor stability, and prone to failures. By adopting the improved breathing component, it is expected to comprehensively improve the performance of the compressor and meet the market demand for high-efficiency and reliable compressors. Ensure that the connections between the valve group 4, the cylinder head 3 and other components of the compressor (such as the frame, the cylinder 1) are firm and well-matched. The cylinder head 3, the valve group 4 and the suction silencer component 5 are fitted to the cylinder 1 of the compressor through fastening screws 2 to avoid problems such as leakage and wear caused by poor assembly, which affect the normal operation of the compressor.

[0059] The breathing component of the hermetic reciprocating piston compressor improves the airtightness, suction efficiency and heat dissipation performance through methods such as an integrated structure, welding process, and material optimization. Applying it to the compressor improves the overall performance from the level of the core components.

[0060] The valve group 4 and the cylinder head 3 are fixed to the frame of the compressor through bolts, fastening screws 2, etc. The fixing method of the fastening screws 2 is relatively simple to operate and can provide reliable connection strength, ensuring the stable position of the valve group 4 and the cylinder head 3 during the operation of the compressor and reducing the risk of leakage and failure caused by loosening. The valve group 4 cooperates with the cylinder 1 of the compressor to ensure that the suction and exhaust processes are closely matched with the working cycle of the cylinder 1, making the gas flow smoothly inside the compressor, improving the compression efficiency and reducing the energy loss.

[0061] Thanks to the optimization of the breathing component of the hermetic reciprocating piston compressor, the suction efficiency of the compressor is improved, the suction and exhalation losses are reduced, and thus the refrigeration efficiency is enhanced. The good airtightness and heat dissipation performance also enhance the stability of the compressor operation, reduce the probability of failures, and extend the service life.

[0062] The precise cooperation between the valve group 4 and the cylinder 1 of the compressor optimizes the gas flow path inside the compressor, reduces the gas flow resistance, improves the efficiency of the compression process, enables the compressor to compress more gas per unit time, and enhances the working ability of the compressor.

[0063] The above are only the preferred embodiments of the present invention and are not used to limit the present invention. For those skilled in the art, various changes and modifications can be made to the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principle of the present invention shall be included within the protection scope of the present invention.

Claims

1. A breathing assembly for a fully enclosed reciprocating piston compressor, characterized in that: include: The cylinder head is provided with heat dissipation ribs; The valve group includes a valve plate and a valve sheet with air intake holes and air exhaust holes installed on the valve plate, and the valve plate and the cylinder head are welded and sealed; The suction muffler component includes a connector and a suction muffler body. The connector is a cylindrical structure formed by stamping the components separately and then assembling them together. One end of the connector is connected to the valve plate and welded and sealed, and the other end is connected to the suction muffler body. The suction muffler body is sprayed with insulation material on the side close to the motor. The cylinder head, valve group and connector are made of the same material.

2. The breathing assembly of a fully enclosed reciprocating piston compressor according to claim 1, characterized in that: The butt joint between the suction muffler body and the connector is connected and sealed by means of a wedge-shaped groove structure, welding and / or gluing.

3. The breathing assembly of a fully enclosed reciprocating piston compressor according to claim 2, characterized in that: The components of the connector are assembled and sealed by welding, and the connector is made of iron material.

4. The breathing assembly of a fully enclosed reciprocating piston compressor according to claim 1, characterized in that: The valve plate and the cylinder head are joined in a groove shape and sealed by welding.

5. The breathing assembly of a fully enclosed reciprocating piston compressor according to claim 1 or 4, characterized in that: The connector and the valve plate are welded by convex point resistance welding.

6. The breathing assembly of a fully enclosed reciprocating piston compressor according to claim 1, characterized in that: The cylinder cover is formed by stamping, and a plurality of convex ribs are formed on the outer surface.

7. The breathing assembly of a fully enclosed reciprocating piston compressor according to claim 1 or 6, characterized in that: The cylinder head is made of stainless steel.

8. The breathing assembly of a fully enclosed reciprocating piston compressor according to claim 1, characterized in that: The valve plate is formed by stamping, and the valve sheet is welded to the valve plate.

9. A compressor, characterized in that: A breathing assembly utilizing a fully enclosed reciprocating piston compressor as claimed in any one of claims 1 to 8.

10. The compressor according to claim 9, characterized in that The valve group and the cylinder cover are fixed to the frame of the compressor by fastening screws, and the valve group cooperates with the compressor cylinder.

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