Powder metallurgy compressor valve plate

Abstract

The utility model discloses a powder metallurgy compressor valve plate, and particularly relates to the technical field of compressor valve plates. The powder metallurgy compressor valve plate comprises an outer valve plate base plate, an inner valve plate base plate, a sealing ring, a heat dissipation groove and a heat dissipation assembly which are arranged on a compressor. Mounting holes are formed in the corners of the outer valve plate base plate, and a positioning step groove is formed in the outer valve plate base plate; the inner valve plate base plate is arranged in the positioning step groove, and an air suction unit and an exhaust unit are arranged on the inner valve plate base plate; the inner valve plate base plate is arranged in the positioning step groove, and an air suction unit and an exhaust unit are arranged on the inner valve plate base plate; the multiple heat dissipation grooves are formed in the lower surfaces of the outer valve plate base plate and the inner valve plate base plate correspondingly. The problems that an existing valve plate belongs to a quick-wear part, the whole valve plate needs to be replaced during follow-up replacement, and the replacement utilization rate of the structure is low; and when the compressor works, the valve plate can generate high temperature, so that the durability of the valve plate is reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressor valve plates, and more specifically, to a powder metallurgy compressor valve plate. Background Art

[0002] The existing compressor valve system generally includes valve plates, suction valve plates and exhaust valve plates. During the suction process of the compressor, the suction valve plate is opened and the exhaust valve plate is closed; during the exhaust process of the compressor, the suction valve plate is closed and the exhaust valve plate is opened. When the compressor is working, the intake valve and exhaust valve switches cooperate with each other to enable it to do work on the fluid and realize the refrigeration cycle. The existing exhaust valve port end faces and suction valve port end faces are both planar structures. In specific implementation, the existing compressor valve plates are mostly made of powder metallurgy materials, molded and sintered, and the suction valve ports and exhaust valve ports are machined and ground.

[0003] Patent No. CN205805871U discloses a powder metallurgy compressor valve plate for a refrigerator, including a valve plate body, the valve plate body is a rectangular structure, the four corners of the valve plate body are provided with mounting holes, the lower left side of the valve plate body is provided with an exhaust hole, the upper left corner of the valve plate body is provided with an air intake hole groove, the interior of the air intake hole groove is provided with an air intake hole, and the right side of the valve plate body is provided with a valve plate groove. In general, the utility model has a simple structure, can effectively improve the refrigeration effect of the compressor, and is suitable for popularization and use.

[0004] In the above patent, the inventor believes that when the patent is in use, because the valve plate as a whole is formed by powder metallurgy pressing technology, although it meets the convenience of manufacturing, the valve plate is a wearing part and needs to be replaced as a whole during subsequent replacement, and the replacement utilization rate of the structure is low; in addition, the valve plate will generate a higher temperature when the compressor is working, which will reduce the durability of the valve plate. Utility Model Content

[0005] In order to overcome the above-mentioned defects of the prior art, the utility model provides a powder metallurgy compressor valve plate. The technical problems to be solved by the utility model are: the existing valve plate is a wearing part, and the entirety needs to be replaced during subsequent replacement, and the replacement utilization rate of the structure is low; when the compressor is working, the valve plate will generate a higher temperature, which will reduce the durability of the valve plate.

[0006] To achieve the above object, the utility model provides the following technical solution: a powder metallurgy compressor valve plate, comprising:

[0007] An outer valve plate substrate mounted on the compressor, wherein the outer valve plate substrate is provided with mounting holes at the corners thereof, and a positioning step groove is provided on the outer valve plate substrate;

[0008] An inner valve plate substrate mounted on the compressor, the inner valve plate substrate being arranged in the positioning step groove, and an air intake unit and an air discharge unit being arranged on the inner valve plate substrate;

[0009] A sealing ring, the sealing ring being arranged between the inner valve plate substrate and the positioning step groove;

[0010] A heat dissipation groove, wherein the heat dissipation groove is multiple in number and is respectively disposed on the lower surface of the outer valve plate substrate and the inner valve plate substrate;

[0011] A heat dissipation component is arranged in the heat dissipation groove and is located below the inner valve plate substrate. A fixing block is arranged on the heat dissipation component and is vertically corresponding to the mounting hole.

[0012] In a preferred embodiment, the positioning step groove is provided in a convex structure, a limiting edge is integrally provided on the inner valve plate substrate, and the size of the sealing ring is matched with the size of the limiting edge.

[0013] In a preferred embodiment, the air suction unit includes an air suction valve plate installation groove provided on one side of the inner valve plate substrate, and an air suction hole penetrating through the other side of the inner valve plate substrate is provided in the air suction valve plate installation groove.

[0014] In a preferred embodiment, the exhaust unit includes an exhaust valve plate installation groove provided on the other side of the inner valve plate substrate, and an exhaust hole penetrating through one side of the inner valve plate substrate is provided in the exhaust valve plate installation groove.

[0015] In a preferred embodiment, the heat dissipation groove is arranged in a V-shaped structure, and the heat dissipation assembly includes a heat dissipation substrate, a plurality of thermally conductive strips fixedly connected to the heat dissipation substrate, and a plurality of ventilation grooves opened on the heat dissipation substrate. The heat dissipation substrate is located below the inner valve plate substrate, the thermally conductive strip is located in the heat dissipation groove, the ventilation groove is located between two adjacent thermally conductive strips, and thermal conductive silicone grease is coated between the heat dissipation groove and the thermally conductive strip.

[0016] In a preferred embodiment, a relief opening is provided on the heat dissipation substrate, and the relief opening corresponds to a position below the air intake unit and the air exhaust unit.

[0017] In a preferred embodiment, the number of the fixing blocks is two pairs, and they are respectively fixedly connected to the corners of the heat dissipation substrate, and the fixing blocks are provided with assembly holes of the same specifications as the mounting holes.

[0018] Technical effects and advantages of the utility model:

[0019] 1. A powder metallurgy compressor valve plate of the utility model is composed of an outer valve plate substrate and an inner valve plate substrate to form a complete compressor valve plate, and a split valve plate structure is used, so that the replacement utilization rate of the structure can be improved during replacement. In addition, since the inner valve plate substrate is tightly arranged on the outer valve plate substrate, the sealing of the connection is ensured, the fixing block cooperates with the connection of the mounting hole, and the connection position is limited by supporting the heat dissipation component to provide the inner valve plate substrate with a connection position, which can provide convenience for the quick disassembly and assembly of the heat dissipation component and the inner valve plate substrate.

[0020] 2. A powder metallurgy compressor valve plate of the utility model is provided with heat dissipation grooves on the external surfaces of the outer valve plate substrate and the inner valve plate substrate, and a heat dissipation component is configured at the position of the heat dissipation groove, so that the heat dissipation area of ​​the external surfaces of the outer valve plate substrate and the inner valve plate substrate can be increased, the heat dissipation performance can be improved, and then the durability of the valve plate structure can be improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] In order to more clearly illustrate the implementation of the utility model or the technical solution in the prior art, the following is a brief introduction to the drawings required for the implementation or the prior art description. Obviously, the drawings in the following description are only exemplary, and for ordinary technicians in this field, other implementation drawings can be derived from the provided drawings without creative work.

[0022] Figure 1 It is a schematic structural diagram of the overall first viewing angle of the utility model.

[0023] Figure 2 It is a schematic structural diagram of the overall second viewing angle of the utility model.

[0024] Figure 3 This is a basic disassembled diagram of the outer valve plate substrate and the inner valve plate of the utility model.

[0025] Figure 4 It is a structural schematic diagram of the inner valve plate of the utility model.

[0026] Figure 5 It is a structural schematic diagram of the heat dissipation component of the utility model.

[0027] The accompanying drawings are marked as follows: 1. outer valve plate substrate; 2. mounting hole; 3. inner valve plate substrate; 4. intake valve plate mounting groove; 5. intake hole; 6. exhaust valve plate mounting groove; 7. exhaust hole; 8. positioning step groove; 9. sealing ring; 10. heat dissipation groove; 11. heat dissipation assembly; 111. heat dissipation substrate; 112. thermal conductive strip; 113. ventilation groove; 12. fixing block; 13. limit edge; 14. avoidance opening. DETAILED DESCRIPTION

[0028] The following is a specific embodiment of the present invention. People familiar with the technology can easily understand the other advantages and functions of the present invention from the contents disclosed in this specification. Obviously, the described embodiment is a part 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.

[0029] Combined with reference Figure 1-Figure 5 The utility model provides a powder metallurgy compressor valve plate, comprising an outer valve plate substrate 1, an inner valve plate substrate 3, a sealing ring 9, a heat dissipation groove 10 and a heat dissipation component 11.

[0030] The outer valve plate substrate 1 is installed on the compressor. The corners of the outer valve plate substrate 1 are provided with mounting holes 2. The mounting holes 2 can be fixed by fasteners in conjunction with the installation position of the compressor. The outer valve plate substrate 1 is provided with a positioning step groove 8. The positioning step groove 8 can be used to place the inner valve plate substrate 3 to achieve installation limit.

[0031] The inner valve plate substrate 3 is mounted on the compressor. The inner valve plate substrate 3 is disposed in the positioning step groove 8. An air intake unit and an air exhaust unit are disposed on the inner valve plate substrate 3.

[0032] The positioning step groove 8 is arranged in a convex structure, and a limiting edge 13 is integrally arranged on the inner valve plate substrate 3. The size of the sealing ring 9 is adapted to the size of the limiting edge 13. The limiting edge 13 can pre-support the inner valve plate substrate 3 on the outer valve plate substrate 1, which can achieve a unidirectional limiting effect and facilitate subsequent limiting support.

[0033] The air intake unit includes an air intake valve plate mounting groove 4 provided on one side of the inner valve plate substrate 3, and an air intake hole 5 penetrating the other side of the inner valve plate substrate 3 is provided in the air intake valve plate mounting groove 4. An air intake valve plate can be used in the air intake valve plate mounting groove 4, and a hole for installing the air intake valve plate is provided in the air intake valve plate mounting groove 4. When the compressor valve plate is installed in the present application, the air intake unit is facing the piston in the corresponding compressor.

[0034] The exhaust unit includes an exhaust valve plate mounting groove 6 opened on the other side of the inner valve plate substrate 3, and an exhaust hole 7 penetrating one side of the inner valve plate substrate 3 is opened in the exhaust valve plate mounting groove 6. The exhaust valve plate can be used in the exhaust valve plate mounting groove 6, and the exhaust valve plate mounting groove 6 is provided with a hole for installing the exhaust valve plate.

[0035] The sealing ring 9 is arranged between the inner valve plate substrate 3 and the positioning step groove 8 . The sealing ring 9 can be used to improve the sealing performance of the inner valve plate substrate 3 arranged in the positioning step groove 8 .

[0036] There are a plurality of heat dissipation grooves 10 , which are respectively opened on the lower surfaces of the outer valve plate substrate 1 and the inner valve plate substrate 3 .

[0037] The heat dissipation groove 10 is arranged in a V-shaped structure. The heat dissipation groove 10 arranged in a V-shaped structure can be used to increase the heat dissipation area of ​​the outer surface of the outer valve plate substrate 1 and the inner valve plate substrate 3, and the outer surface is the side of the outer valve plate substrate 1 and the inner valve plate substrate 3 facing away from the piston. The heat dissipation component 11 includes a heat dissipation substrate 111, a plurality of heat conductive strips 112 fixedly connected to the heat dissipation substrate 111, and a plurality of ventilation grooves 113 opened on the heat dissipation substrate 111. The heat dissipation substrate 111 is located below the inner valve plate substrate 3, the heat conductive strip 112 is located in the heat dissipation groove 10, and the ventilation groove 113 is located between two adjacent heat conductive strips 112. Thermal grease is coated between the heat dissipation groove 10 and the thermally conductive strip 112. The thermally conductive silicone grease can improve the thermal conductivity of the thermally conductive strip 112 on the outer valve plate substrate 1 and the inner valve plate substrate 3. The heat dissipation substrate 111 is preferably a copper substrate, so that it can cooperate with the heat-absorbing thermally conductive strip 112 to achieve effective heat dissipation. At the same time, due to the setting of the ventilation groove 113, one side of the heat dissipation substrate 111 can be ventilated. In this way, when the outer valve plate substrate 1 and the inner valve plate substrate 3 are used in the compressor, the reliability of stable operation is guaranteed by providing effective heat dissipation for the outer valve plate substrate 1 and the inner valve plate substrate 3, thereby improving the durability of the valve plate.

[0038] It is worth noting that when the heat dissipation substrate 111 is fixed on the bottom of the outer valve plate substrate 1 and the inner valve plate substrate 3 , the connection tightness can be increased by adding a gasket to ensure that the inner valve plate substrate 3 is stably set on the outer valve plate substrate 1 .

[0039] The heat dissipation substrate 111 is provided with an avoidance opening 14 , which corresponds to the lower position of the air intake unit and the exhaust unit. The avoidance opening 14 can be used to avoid the intake and exhaust positions of the air intake unit and the exhaust unit.

[0040] There are two pairs of fixing blocks 12 , which are respectively fixedly connected to the corners of the heat dissipation substrate 111 . The fixing blocks 12 are provided with assembly holes of the same specification as the mounting holes 2 .

[0041] Specifically, when it is necessary to separate the split outer valve plate substrate 1 and the inner valve plate substrate 3, the fasteners shared by the assembly holes and the mounting holes 2 can be released, so that the heat dissipation component 11 can be removed. After the heat dissipation component 11 is removed, the retaining force at the bottom of the inner valve plate substrate 3 on the corresponding outer valve plate substrate 1 can be released, so that the inner valve plate substrate 3 can be removed from the positioning step groove 8, and a split valve plate is used to achieve maintenance and replacement, which can improve the utilization rate of the valve plate structure replacement.

[0042] Similarly, when assembling the compressor valve plate of the present application, the inner valve plate substrate 3 can be set in the positioning step groove 8 of the outer valve plate substrate 1 to achieve pre-limiting, and then the heat dissipation substrate 111 is pushed to the bottom position of the inner valve plate substrate 3 through a gasket. At the same time, the thermal conductive strip 112 corresponds to the heat dissipation groove 10 coated with thermal conductive silicone grease. Finally, the mounting hole 2 and the assembly hole can be connected to the compressor together through fasteners. Since the mounting hole 2 and the assembly hole share the same fastener to be connected to the compressor, this can provide a common tightening or untightening effect for the connection between the heat dissipation component 11 and the inner valve plate substrate 3.

[0043] In the present application, both the outer valve plate substrate 1 and the inner valve plate substrate 3 can be pressed and formed by powder metallurgy technology.

Claims

1. A powder metallurgy compressor valve plate, characterized in that: include: An outer valve plate substrate (1) mounted on a compressor, wherein mounting holes (2) are provided at the corners of the outer valve plate substrate (1), and a positioning step groove (8) is provided on the outer valve plate substrate (1); An inner valve plate substrate (3) mounted on the compressor, the inner valve plate substrate (3) being arranged in the positioning step groove (8), and an air intake unit and an air exhaust unit being arranged on the inner valve plate substrate (3); A sealing ring (9), wherein the sealing ring (9) is arranged between the inner valve plate substrate (3) and the positioning step groove (8); Heat dissipation grooves (10), the number of the heat dissipation grooves (10) being plural and respectively disposed on the lower surfaces of the outer valve plate substrate (1) and the inner valve plate substrate (3); A heat dissipation component (11), the heat dissipation component (11) is arranged in the heat dissipation groove (10) and is located below the inner valve plate substrate (3), and a fixing block (12) is arranged on the heat dissipation component (11) and is arranged vertically corresponding to the mounting hole (2).

2. A powder metallurgy compressor valve plate according to claim 1, characterized in that: The positioning step groove (8) is arranged in a convex structure, a limiting edge (13) is integrally arranged on the inner valve plate base plate (3), and the size of the sealing ring (9) is adapted to the size of the limiting edge (13).

3. The powder metallurgy compressor valve plate according to claim 1, characterized in that: The air suction unit comprises an air suction valve plate mounting groove (4) provided on one side of the inner valve plate substrate (3), and an air suction hole (5) penetrating the other side of the inner valve plate substrate (3) is provided in the air suction valve plate mounting groove (4).

4. A powder metallurgy compressor valve plate according to claim 3, characterized in that: The exhaust unit comprises an exhaust valve plate installation groove (6) provided on the other side of the inner valve plate substrate (3), and an exhaust hole (7) penetrating one side of the inner valve plate substrate (3) is provided in the exhaust valve plate installation groove (6).

5. The powder metallurgy compressor valve plate according to claim 1, characterized in that: The heat dissipation groove (10) is arranged in a V-shaped structure, and the heat dissipation component (11) comprises a heat dissipation substrate (111), a plurality of heat-conducting strips (112) fixedly connected to the heat dissipation substrate (111), and a plurality of ventilation grooves (113) opened on the heat dissipation substrate (111); the heat dissipation substrate (111) is located below the inner valve plate substrate (3); the heat-conducting strips (112) are located in the heat dissipation groove (10); the ventilation groove (113) is located between two adjacent heat-conducting strips (112); and thermal grease is coated between the heat dissipation groove (10) and the heat-conducting strips (112).

6. The powder metallurgy compressor valve plate according to claim 5, characterized in that: The heat dissipation substrate (111) is provided with an escape opening (14), and the escape opening (14) corresponds to a position below the air intake unit and the air exhaust unit.

7. The powder metallurgy compressor valve plate according to claim 5, characterized in that: The number of the fixing blocks (12) is two pairs, and they are respectively fixedly connected to the corners of the heat dissipation substrate (111), and the fixing blocks (12) are provided with assembly holes of the same specifications as the mounting holes (2).

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