Valve group mounting structure of refrigeration compressor

Abstract

The utility model discloses a refrigeration compressor valve group mounting structure, which belongs to the technical field of refrigeration compressors and comprises a crankcase, a fixing ring, a valve plate and a cylinder cover, the crankcase, the fixing ring, the valve plate and the cylinder cover are sequentially arranged, a limiting block is arranged on one side, close to the cylinder cover, of the crankcase, and a bearing block is arranged on one side face of the limiting block. The limiting block makes contact with the bearing block, one end of the bearing block is fixedly connected with the air cylinder cover, sealing pieces are arranged at one end of the bearing block and one end of the limiting block, the opposite side faces of the limiting block and the bearing block are inclined faces, the inclined face of the limiting block and the inclined face of the bearing block are matched and attached, and a plurality of bolt holes are formed in the crankcase, the fixing ring and the air cylinder cover. The positions of bolt holes of the crankcase, the fixing ring and the air cylinder cover correspond, the multiple corresponding bolt holes are connected through fastening bolts, the sealing piece is a sealing gasket, the sealing end located at the top of the limiting block is fixedly connected with the air cylinder cover, and the sealing performance between the crankcase and the air cylinder cover can be improved.

Description

Technical Field

[0001] The utility model relates to the technical field of refrigeration compressors, and more specifically, to an installation structure of a valve group of a refrigeration compressor. Background Art

[0002] A refrigeration compressor is an important component of refrigeration electrical appliances such as air conditioners and refrigerators. The compressor structure of the prior art mainly includes important components such as an exhaust assembly, a crankcase, and a valve group. Among them, the installation and positioning of the valve group play an important role in the manufacture of the compressor.

[0003] Chinese Patent Application No. CN202020440500.8 discloses an installation structure of a valve group of a refrigeration compressor, which includes a crankcase, a fixing ring, a valve plate, a cylinder head, a screw, and a wave washer. The fixing ring is provided with a receiving hole, the valve plate is adapted to the receiving hole and is arranged in the receiving hole, the wave washer is arranged between the crankcase and the fixing ring, the screw sequentially passes through the cylinder head, the fixing ring, the wave washer and the crankcase and is fixed to the crankcase, and the cylinder head presses the valve plate. The utility model provides an installation structure of a valve group of a refrigeration compressor. The wave washer can be slightly deformed to automatically adjust the interference amount of the valve group installation, make up for the manufacturing differences of parts, improve the error tolerance rate, ensure good consistency of the valve group installation seal, and thus achieve the purpose of improving the average performance of the compressor.

[0004] Chinese Patent Application No. CN202220438644.X discloses a valve group structure of a refrigeration compressor, which includes a crankcase, a fixing ring, a valve plate gasket, a suction valve plate, a valve plate, a cylinder head, and a screw. The fixing ring is provided with a receiving hole, and a positioning groove is provided on the side wall of the receiving hole. The outer contours of the valve plate gasket, the suction valve plate, and the valve plate are adapted to the receiving hole and are sequentially arranged in the receiving hole. The valve plate gasket, the suction valve plate, and the valve plate are respectively provided with a first positioning protrusion, a second positioning protrusion, and a third positioning protrusion adapted to the positioning groove. The screw sequentially passes through the cylinder head, the fixing ring, and the crankcase and is fixed to the crankcase, and the cylinder head presses the valve plate. The utility model provides an installation structure of a valve group of a refrigeration compressor, which can be fixed with fewer screws, is convenient for installation, reduces the installation size, and is convenient for the miniaturized design of valve group parts.

[0005] When the above two solutions are implemented, there is a smooth fit between the crankcase and the cylinder head, and they are only fixed by bolts, resulting in relatively high dimensional accuracy requirements between the bolts, the crankcase, and the cylinder head, and the dimensions need to fit. Otherwise, due to a certain gap between the cylinder head and the bolts, after the equipment is used for a long time, it is easy to cause the cylinder head and the crankcase to move in the vertical plane, resulting in poor limiting effect in the vertical direction, and thus the sealing performance between the crankcase and the cylinder head is poor. In view of the above problems, a solution is proposed below. Summary of the Utility Model

[0006] Aiming at the problems existing in the prior art, the purpose of the present utility model is to provide an installation structure for a refrigeration compressor valve group, which can improve the sealing performance between the crankcase and the cylinder head.

[0007] To solve the above problems, the present utility model adopts the following technical solutions.

[0008] An installation structure for a refrigeration compressor valve group, comprising a crankcase, a fixing ring, a valve plate and a cylinder head, the crankcase, the fixing ring, the valve plate and the cylinder head are arranged in sequence, a limiting block is provided on one side of the crankcase close to the cylinder head, a receiving block is provided on one side surface of the limiting block, the limiting block and the receiving block are in contact with each other, one end of the receiving block is fixedly connected to the cylinder head, a sealing member is provided at one end of the receiving block and the limiting block, the opposite side surfaces of the limiting block and the receiving block are inclined surfaces, and the inclined surface of the limiting block and the inclined surface of the receiving block are mutually adapted and fitted, a plurality of bolt holes are provided on the crankcase, the fixing ring and the cylinder head, and the bolt hole positions on the crankcase, the fixing ring and the cylinder head correspond to each other, and the plurality of corresponding bolt holes are all connected by fastening bolts.

[0009] Preferably, both the limiting block and the receiving block are in a sealed shape connected end to end, the receiving block is located inside the limiting block, and the receiving block and the limiting block are mutually adapted.

[0010] Preferably, the sealing member is a gasket, the sealing end at the top of the limiting block is fixedly connected to the cylinder head, and the gasket at the top of the receiving block is fixedly connected to the side surface of the crankcase.

[0011] Preferably, a plurality of limiting blocks and receiving blocks are provided, the plurality of limiting blocks are evenly arranged, and the receiving blocks and the limiting blocks correspond one by one.

[0012] Preferably, a positioning port is provided on the limiting block, a positioning block is provided inside the positioning port, and the positioning block is fixedly connected to the receiving block.

[0013] Preferably, the fastening bolt sequentially passes through the bolt holes on the cylinder head and the fixing ring, and the fastening bolt is in threaded fit with the bolt hole on the crankcase.

[0014] Preferably, the receiving block is arranged on the outer side surface of the cylinder head.

[0015] Compared with the prior art, the advantages of the present utility model are as follows:

[0016] 1. This solution uses fastening bolts to fix the crankcase, fixed ring and cylinder head. The valve plate is limited by the fixed ring, and at the same time, the receiving block is supported and limited by installing a limiting block, so as to limit the cylinder head, avoid relative movement between the cylinder head and the crankcase in the vertical plane, and ensure stability. The inclined surface of the limiting block can expand the area of the open end of the cavity surrounded by the limiting block, and the inclined surface of the receiving block can reduce the area of the open end of the cavity surrounded by the receiving block, thus facilitating the insertion between the receiving block and the limiting block and improving the installation effect. The sealing element is made of rubber, which has elasticity, can achieve the connection effect between the cylinder head and the crankcase, and at the same time has a certain elastic compensation to avoid loosening of the connection between the crankcase and the cylinder head due to the vibration of the equipment. In addition, the sealing element can increase the friction between the crankcase and the cylinder head, further reducing the relative movement between the crankcase and the cylinder head.

[0017] 2. The cooperation between the positioning port and the positioning block can improve the connection between the limiting block and the receiving block, increase the force, thus ensuring the stability of the cooperation between the crankcase and the cylinder head. At the same time, during installation, the stability of the position between the limiting block and the corresponding receiving block can be ensured, achieving a positioning effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic structural diagram of the side view of the present utility model;

[0019] Figure 2 is a schematic structural diagram of the front view of the present utility model;

[0020] Figure 3 is a schematic cross-sectional structural diagram of the front view of the present utility model;

[0021] Figure 4 is a three-dimensional structural diagram of the limiting block and the sealing element of Embodiment 1 of the present utility model;

[0022] Figure 5 is a schematic front view structural diagram of the limiting block and the sealing element of Embodiment 1 of the present utility model;

[0023] Figure 6 is a schematic position structural diagram of the limiting block and the crankcase of Embodiment 2 of the present utility model;

[0024] Figure 7 is a three-dimensional structural diagram of the limiting block of Embodiment 2 of the present utility model;

[0025] Figure 8 is a three-dimensional structural diagram of the limiting block and the positioning port of Embodiment 3 of the present utility model;

[0026] Figure 9 is a three-dimensional structural diagram of the receiving block and the positioning block of Embodiment 3 of the present utility model.

[0027] Description of Reference Numerals in the Figures:

[0028] 1. Crankcase; 2. Fixed Ring; 3. Valve Plate; 4. Cylinder Head; 5. Limit Block; 6. Bearing Block; 7. Seal; 8. Inclined Plane; 9. Bolt Hole; 10. Fastening Bolt; 11. Gasket; 12. Positioning Port; 13. Positioning Block. Detailed Implementation Manner

[0029] Example 1:

[0030] Please refer to Figures 1-5 , a mounting structure for a valve group of a refrigeration compressor, including a crankcase 1, a fixed ring 2, a valve plate 3, and a cylinder head 4. The crankcase 1, the fixed ring 2, the valve plate 3, and the cylinder head 4 are arranged in sequence. A placement opening is provided on one side of the fixed ring 2 close to the valve plate 3. The valve plate 3 is arranged inside the placement opening, and a bayonet is provided on the valve plate 3. A clamping block is arranged inside the bayonet, and the clamping block is fixedly connected to the fixed ring 2. The placement opening plays a role in placing and storing the valve plate 3, and the bayonet and the clamping block play a role in fixing the position between the valve plate 3 and the fixed ring 2, preventing the valve plate 3 from rotating inside the placement opening and ensuring the stability of the connection between the valve plate 3 and the fixed ring 2.

[0031] A number of bolt holes 9 are provided on the crankcase 1, the fixed ring 2, and the cylinder head 4. The bolt holes 9 on the fixed ring 2 and the cylinder head 4 penetrate through the fixed ring 2 and the cylinder head 4, and the bolt holes 9 on the crankcase 1 do not penetrate through the crankcase 1. The bolt holes 9 on the crankcase 1, the fixed ring 2, and the cylinder head 4 correspond to each other one by one. Fastening bolts 10 are inserted into the corresponding bolt holes 9 of the crankcase 1, the fixed ring 2, and the cylinder head 4, and an elastic gasket is provided between the fastening bolts 10 and the cylinder head 4. The spring washer can play a role in preventing loosening and increasing the pre-tightening force. The fastening bolts 10 pass through the elastic gasket, and the fastening bolts 10 are rotationally and slidably matched with the cylinder head 4 and the fixed ring 2, and the fastening bolts 10 are in threaded fit with the bolt holes 9 of the crankcase 1.

[0032] On one side of the crankcase 1 close to the cylinder head 4, a limiting block 5 is fixedly connected. The limiting block 5 is in a sealed shape with its head and tail connected. The outer contour of the projection of the limiting block 5 on the crankcase 1 is the same as the outer contour of the crankcase 1. Inside the limiting block 5, a receiving block 6 is provided. The receiving block 6 is in a sealed shape with its head and tail connected. One end of the receiving block 6 is fixedly connected to the outer side surface of the cylinder head 4, and the outer contour of the receiving block 6 is the same as and adapted to the inner contour of the limiting block 5, thus ensuring the stability of the positioning of the limiting block 5 for the receiving block 6, avoiding the shaking between the cylinder head 4 and the crankcase 1, and ensuring stability. The opposite side surfaces of the limiting block 5 and the receiving block 6 are inclined surfaces 8, and the inclined surface 8 of the limiting block 5 and the inclined surface 8 of the receiving block 6 are mutually adapted and fitted. The area of one end of the limiting block 5 close to the receiving block 6 is larger than the area of the end far from the receiving block 6, and the area of one end of the receiving block 6 close to the limiting block 5 is smaller than the area of the end far from the limiting block 5. The receiving block 6 is located inside the limiting block 5, and the receiving block 6 and the limiting block 5 are mutually adapted. The inclined surfaces 8 of the limiting block 5 and the receiving block 6 can, on the one hand, facilitate the insertion of the receiving block 6 into the limiting block 5, improving the installation efficiency. At the same time, the inclined surfaces 8 can increase the friction force, and the inclined surfaces 8 can reduce the stress in the vertical plane, ensuring the support of the limiting block 5 for the receiving block 6.

[0033] At one end of the receiving block 6 and the limiting block 5, a sealing member 7 is provided. The sealing member 7 is a sealing gasket 11. The sealing end at the top of the limiting block 5 is fixedly connected to the cylinder head 4, and the sealing gasket 11 at the top of the receiving block 6 is fixedly connected to the side surface of the crankcase 1. The sealing gasket 11 is made of a rubber gasket. The sealing gasket 11 has elasticity, which can achieve the connection effect between the cylinder head 4 and the crankcase 1. At the same time, it has a certain elastic compensation to avoid the loosening of the connection between the crankcase 1 and the cylinder head 4 due to the shaking of the equipment. In addition, the sealing member 7 can increase the friction force between the crankcase 1 and the cylinder head 4, further reducing the relative movement between the crankcase 1 and the cylinder head 4.

[0034] Embodiment Two:

[0035] Please refer to Figure 6 and Figure 7 A valve group installation structure of a refrigeration compressor, which is different from Embodiment One in that: the limiting block 5 and the receiving block 6 are in a block shape, and the cross-sections of both the receiving block 6 and the limiting block 5 are in a right trapezoid shape. A number of limiting blocks 5 are arranged along the contour line of the crankcase 1. The receiving block 6 and the limiting block 5 are in one-to-one correspondence. The inclined surface 8 of the receiving block 6 and the inclined surface 8 of the limiting block 5 are in contact and fit with each other. The block-shaped limiting block 5 and receiving block 6 can reduce the material consumption, thus achieving the effect of cost reduction. At the same time, it can reduce the overall weight, facilitating transportation and installation.

[0036] Embodiment Three:

[0037] Please refer to Figure 8 and Figure 9, A mounting structure for a refrigeration compressor valve group. Different from the second embodiment, it further includes a positioning port 12 opened at the middle position of the limiting block 5. A positioning block 13 is arranged inside the positioning port 12. The positioning block 13 and the positioning port 12 are mutually adapted. The positioning block 13 is fixedly connected to the receiving block 6. The cooperation between the positioning port 12 and the positioning block 13 can improve the connection between the limiting block 5 and the receiving block 6, enhance the force-bearing capacity, thereby ensuring the stability of the cooperation between the crankcase 1 and the cylinder head 4. At the same time, during installation, the stability of the position between the limiting block 5 and the corresponding receiving block 6 can be ensured, playing a positioning role.

[0038] Working principle:

[0039] Place the fixing ring 2 on the side of the crankcase 1 where the bolt holes 9 are opened. At this time, the fixing ring 2 is located between the limiting blocks 5. The bolt holes 9 on the fixing ring 2 correspond to the bolt holes 9 on the crankcase 1. The limiting blocks 5 play a positioning role for the fixing ring 2. Then place the valve plate 3 inside the placing port of the fixing ring 2. The positioning effect is achieved through the cooperation between the bayonet on the valve plate 3 and the clamping block inside the placing port. Finally, place the cylinder head 4 on one side of the valve plate 3. The bolt holes 9 on the cylinder head 4 correspond to the bolt holes 9 on the fixing ring 2. At this time, the receiving blocks 6 on the cylinder head 4 will be inserted into the limiting blocks 5, and the limiting blocks 5 limit the receiving blocks 6, thereby realizing the fixation of the positions among the crankcase 1, the fixing ring 2, the valve plate 3, and the cylinder head 4. A counterbore is opened at one end of the bolt hole 9 on the cylinder head 4 away from the valve plate 3, and an elastic gasket is arranged inside the counterbore. Pass the fastening bolt 10 through the elastic gasket, the bolt hole 9 on the cylinder head 4, the bolt hole 9 on the fixing ring 2, and the bolt hole 9 on the crankcase 1 in sequence, and the fastening bolt 10 is in threaded cooperation with the bolt hole 9 on the crankcase 1, thus completing the installation.

Claims

1. A refrigeration compressor valve group installation structure, characterized in that: The invention comprises a crankcase (1), a fixing ring (2), a valve plate (3) and a cylinder head (4), wherein the crankcase (1), the fixing ring (2), the valve plate (3) and the cylinder head (4) are arranged in sequence, a limiting block (5) is arranged on one side of the crankcase (1) close to the cylinder head (4), a receiving block (6) is arranged on one side of the limiting block (5), the limiting block (5) and the receiving block (6) are in contact with each other, one end of the receiving block (6) is fixedly connected to the cylinder head (4), and the receiving block (6) and the limiting block (5) are A sealing member (7) is provided at one end of the crankcase (1), the side surfaces of the limiting block (5) and the receiving block (6) facing each other are inclined surfaces (8), and the inclined surfaces (8) of the limiting block (5) and the inclined surfaces (8) of the receiving block (6) are adapted to and fit each other, a plurality of bolt holes (9) are provided on the crankcase (1), the fixing ring (2) and the cylinder head (4), and the bolt holes (9) of the crankcase (1), the fixing ring (2) and the cylinder head (4) are located at corresponding positions, and the plurality of corresponding bolt holes (9) are connected by fastening bolts (10).

2. A refrigeration compressor valve assembly installation structure according to claim 1, characterized in that: The limiting block (5) and the receiving block (6) are both in a sealed shape connected end to end; the receiving block (6) is located inside the limiting block (5); and the receiving block (6) and the limiting block (5) are adapted to each other.

3. A refrigeration compressor valve assembly installation structure according to claim 1, characterized in that: The sealing member (7) is a sealing gasket (11), the sealing end located at the top of the limiting block (5) is fixedly connected to the cylinder head (4), and the sealing gasket (11) at the top of the receiving block (6) is fixedly connected to the side of the crankcase (1).

4. A refrigeration compressor valve assembly installation structure according to claim 1, characterized in that: A plurality of the limit blocks (5) and the receiving blocks (6) are provided, and the plurality of limit blocks (5) are evenly arranged, and the receiving blocks (6) and the limit blocks (5) correspond one to one.

5. A refrigeration compressor valve assembly installation structure according to claim 4, characterized in that: The limiting block (5) is provided with a positioning opening (12), a positioning block (13) is arranged inside the positioning opening (12), and the positioning block (13) and the receiving block (6) are fixedly connected.

6. The refrigeration compressor valve assembly installation structure according to claim 1, characterized in that: The fastening bolts (10) pass through the bolt holes (9) on the cylinder head (4) and the fixing ring (2) in sequence, and the fastening bolts (10) are threadedly matched with the bolt holes (9) on the crankcase (1).

7. The refrigeration compressor valve assembly installation structure according to claim 1, characterized in that: The receiving block (6) is arranged on the outer side surface of the cylinder head (4).

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