Piston structure in air conditioner compressor air cylinder

Abstract

The piston structure comprises a bottom plate, a top plate arranged above the bottom plate and a connecting plate arranged between the bottom plate and the top plate, and a second piston ring and a first piston ring are arranged on the upper side and the lower side of the connecting plate respectively. Inserting grooves are formed in the bottom plate, the top plate and the connecting plate, inserting parts are formed on the first piston ring and the second piston ring, and the inserting parts are connected with the corresponding inserting grooves in an inserted mode. A fixing block is fixedly arranged in the middle of the bottom plate, and a bolt is inserted into the top plate and is in threaded connection with the fixing block. Through the structure, the bottom plate, the top plate, the connecting plate, the first piston ring and the second piston ring are arranged to form the piston, disassembly and assembly are easy and convenient, all assemblies are installed and separated layer by layer, and disassembly and assembly maintenance complexity is reduced; and the first piston ring and the second piston ring are positioned through matching of the inserting parts and the inserting grooves instead of traditional interference fit, any piston ring can be conveniently replaced after abrasion, and leakage and abrasion of the air cylinder can be prevented by periodically replacing the piston rings.

Description

Technical Field

[0001] This utility model relates to the field of cylinder piston technology, and in particular to a piston structure in an air conditioning compressor cylinder. Background Technology

[0002] The compressor cylinder is the core component of a compressor, and its main function is to compress gas. Because gas has a certain degree of compressibility, it needs to be compressed to a certain pressure before it can be used in actual production. The compressor cylinder plays a crucial role in this process.

[0003] A compressor cylinder typically consists of a cylinder head, cylinder body, piston, and piston rings. The piston is a freely movable component inside the cylinder, reciprocating within it. Under the action of the piston, the gas is gradually compressed and eventually discharged.

[0004] The cylinder is one of the core components of a compressor, and its maintenance is crucial. During use, piston rings, as critical wear parts, require regular replacement and maintenance. However, existing piston rings typically use a tight-fitting design embedded in the piston ring groove, requiring the application of external force to disassemble and reassemble the piston ring, making maintenance cumbersome and inconvenient. Therefore, this invention provides a piston structure for an air conditioning compressor cylinder to solve the problems mentioned in the background section. Utility Model Content

[0005] The purpose of this utility model is to provide a piston structure in the cylinder of an air conditioner compressor. The piston is composed of a base plate, a top plate, a connecting plate, a first piston ring, and a second piston ring. It is easy to disassemble and assemble, and each component is installed and separated layer by layer, reducing the complexity of disassembly and maintenance. Furthermore, the first piston ring and the second piston ring are positioned by the cooperation of the insertion part and the insertion groove, rather than the traditional interference fit. After wear, it is easy to replace any piston ring. Regular replacement of the piston ring can prevent cylinder leakage and wear.

[0006] To achieve the above objectives, a piston structure in an air conditioning compressor cylinder is provided, including a base plate, a top plate disposed above the base plate, and a connecting plate disposed between the base plate and the top plate, wherein a second piston ring and a first piston ring are respectively provided on the upper and lower sides of the connecting plate;

[0007] The bottom plate, top plate and connecting plate are all provided with insertion grooves, and the first piston ring and the second piston ring are all formed with insertion parts, which are inserted into the corresponding insertion grooves.

[0008] A fixing block is fixed in the middle of the base plate, and a bolt is inserted inside the top plate, with the bolt threaded to the fixing block.

[0009] According to the piston structure in the cylinder of an air conditioner compressor, both the bottom plate and the top plate are provided with a first weight reduction groove.

[0010] According to the piston structure in the cylinder of an air conditioning compressor, a gap is provided between the top plate and the cylinder wall.

[0011] According to the piston structure in the cylinder of an air conditioner compressor, a connecting rod is fixedly provided at the bottom of the base plate, and a second weight reduction groove is provided inside the connecting rod.

[0012] According to the piston structure in the cylinder of an air conditioner compressor, the connecting plate is sleeved on the outside of the fixing block, the fixing block is also provided with a second weight reduction groove, and the top side of the fixing block is provided with a threaded groove.

[0013] According to the piston structure in the cylinder of an air conditioner compressor, the outer sides of the bottom plate, top plate and connecting plate are all provided with a nano-Al2O3-TiC composite coating, and the surface of the bolt is provided with a CrAlN coating.

[0014] According to the piston structure in the cylinder of an air conditioner compressor, both the outer surfaces of the first piston ring and the second piston ring are provided with DLC coating.

[0015] This utility model has the following beneficial effects:

[0016] 1. Compared with the existing technology, the piston is composed of a base plate, a top plate, a connecting plate, a first piston ring, and a second piston ring. This makes disassembly and assembly simple, and the components are installed and separated layer by layer, reducing the complexity of disassembly and maintenance. Moreover, the first piston ring and the second piston ring are positioned by the cooperation of the insertion part and the insertion groove, rather than the traditional interference fit. After wear, it is easy to replace any piston ring. Regular replacement of piston rings can prevent cylinder leakage and wear. Attached Figure Description

[0017] The present invention will be further described below with reference to the accompanying drawings and embodiments;

[0018] Figure 1 This is a first-view structural schematic diagram of the piston structure in the cylinder of an air conditioner compressor according to the present invention.

[0019] Figure 2 This is a second-view structural schematic diagram of the piston structure in the cylinder of an air conditioner compressor according to the present invention.

[0020] Figure 3 This is a schematic diagram showing the disassembled structure of the piston structure in the cylinder of an air conditioner compressor according to the present invention;

[0021] Figure 4 This is a schematic diagram of the overall structure of the piston structure in the cylinder of an air conditioner compressor according to the present invention.

[0022] Figure 5 This utility model relates to a piston structure in the cylinder of an air conditioning compressor. Figure 4 Enlarged structural diagram at point A in the middle;

[0023] Figure 6 This utility model relates to a piston structure in the cylinder of an air conditioning compressor. Figure 4 Enlarged structural diagram at point B.

[0024] Legend:

[0025] 1. Base plate; 2. Top plate; 3. Connecting plate; 4. First piston ring; 5. Second piston ring; 6. Fixing block; 7. Bolt; 8. Connecting rod; 9. First weight reduction groove; 10. Second weight reduction groove; 11. Insertion part; 12. Insertion groove; 13. Threaded groove. Detailed Implementation

[0026] This section will describe in detail the specific embodiments of the present utility model. The preferred embodiments of the present utility model are shown in the accompanying drawings. The purpose of the drawings is to supplement the textual description with graphics, so that people can intuitively and vividly understand each technical feature and the overall technical solution of the present utility model, but they should not be construed as limiting the scope of protection of the present utility model.

[0027] Reference Figure 1-6 This utility model discloses a piston structure in an air conditioner compressor cylinder, comprising a base plate 1, a top plate 2 located above the base plate 1, and a connecting plate 3 located between the base plate 1 and the top plate 2. The connecting plate 3 has a second piston ring 5 and a first piston ring 4 on its upper and lower sides, respectively, to ensure sealing. Insertion grooves 12 are provided inside the base plate 1, the top plate 2, and the connecting plate 3. Insertion portions 11 are formed on both the first piston ring 4 and the second piston ring 5, and these portions 11 are inserted into the corresponding insertion grooves 12. A fixing block 6 is fixed in the middle of the base plate 1, and the connecting plate 3 is sleeved on the outside of the fixing block 6. Bolts 7 are inserted inside the top plate 2 and are threadedly connected to the fixing block 6. A threaded groove 13 is provided on the top side of the fixing block 6, and the bolts 7 are engaged with the threaded groove 13.

[0028] During piston assembly, the first piston ring 4 is connected to the insertion groove 12 on the base plate 1 via its insertion part 11. The connecting plate 3 is placed over the first piston ring 4, and the insertion groove 12 of the connecting plate 3 is inserted into the insertion part 11 on the first piston ring 4. The second piston ring 5 is connected to the insertion groove 12 of the connecting plate 3 via its insertion part 11. The top plate 2 is placed over the second piston ring 5, and the insertion groove 12 of the top plate 2 is engaged with the insertion part 11 of the second piston ring 5. The piston assembly is completed by inserting bolts 7 through the threaded groove 13 of the top plate 2 and the fixing block 6.

[0029] The piston is composed of a base plate 1, a top plate 2, a connecting plate 3, a first piston ring 4, and a second piston ring 5. It is easy to disassemble and assemble, and each component is installed and separated layer by layer, reducing the complexity of disassembly and maintenance. The first piston ring 4 and the second piston ring 5 are positioned by the cooperation of the insertion part 11 and the insertion groove 12, rather than the traditional interference fit. After wear, any piston ring can be easily replaced. Regular replacement of piston rings can prevent cylinder leakage and wear.

[0030] Both the bottom plate 1 and the top plate 2 are provided with a first weight reduction groove 9 on their bottom sides. A connecting rod 8 is fixedly provided at the bottom of the bottom plate 1. The connecting rod 8 and the fixed block 6 are both provided with a second weight reduction groove 10, which effectively reduces the overall weight of the piston, improves the motion response speed and reduces inertial loss.

[0031] To prevent the top plate 2 from jamming due to high temperature expansion, a gap is set between the top plate 2 and the cylinder wall.

[0032] The outer surfaces of the base plate 1, top plate 2, and connecting plate 3 are all coated with a nano-Al2O3-TiC composite coating to reduce the piston's friction coefficient and improve wear resistance. The bolt 7 has a CrAlN coating, a high-temperature resistant coating that protects the bolt 7. The outer surfaces of the first piston ring 4 and the second piston ring 5 are both coated with a DLC coating to reduce the friction coefficient of the first piston ring 4 and the second piston ring 5, significantly extending their service life.

[0033] Working principle: When assembling the piston, the first piston ring 4 is connected to the insertion groove 12 on the base plate 1 through its insertion part 11. The connecting plate 3 is placed on top of the first piston ring 4, and the insertion groove 12 of the connecting plate 3 is inserted into the insertion part 11 on the first piston ring 4. The second piston ring 5 is connected to the insertion groove 12 of the connecting plate 3 through its insertion part 11. The top plate 2 is placed on the second piston ring 5, and the insertion groove 12 of the top plate 2 is engaged with the insertion part 11 of the second piston ring 5. The assembly of the piston is completed by inserting bolts 7 through the threaded groove 13 of the top plate 2 and the fixing block 6.

[0034] The piston is composed of a base plate 1, a top plate 2, a connecting plate 3, a first piston ring 4, and a second piston ring 5. It is easy to disassemble and assemble, and each component is installed and separated layer by layer, reducing the complexity of disassembly and maintenance. The first piston ring 4 and the second piston ring 5 are positioned by the cooperation of the insertion part 11 and the insertion groove 12, rather than the traditional interference fit. After wear, any piston ring can be easily replaced. Regular replacement of piston rings can prevent cylinder leakage and wear.

[0035] The embodiments of the present utility model have been described in detail above with reference to the accompanying drawings. However, the present utility model is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of the present utility model.

Claims

1. A piston structure in the cylinder of an air conditioner compressor, characterized in that, It includes a base plate (1), a top plate (2) located above the base plate (1), and a connecting plate (3) located between the base plate (1) and the top plate (2). The upper and lower sides of the connecting plate (3) are respectively provided with a second piston ring (5) and a first piston ring (4). The bottom plate (1), top plate (2) and connecting plate (3) are all provided with insertion grooves (12), and the first piston ring (4) and the second piston ring (5) are all formed with insertion parts (11), and the insertion parts (11) are inserted into the corresponding insertion grooves (12); A fixing block (6) is fixed in the middle of the base plate (1), and a bolt (7) is inserted inside the top plate (2). The bolt (7) is threadedly connected to the fixing block (6).

2. The piston structure in the cylinder of an air conditioner compressor according to claim 1, characterized in that, The bottom plate (1) and the top plate (2) are both provided with a first weight reduction groove (9) on the bottom side.

3. The piston structure in the cylinder of an air conditioner compressor according to claim 2, characterized in that, The gap between the top plate (2) and the cylinder wall is set.

4. The piston structure in the cylinder of an air conditioner compressor according to claim 3, characterized in that, The bottom of the base plate (1) is fixed with a connecting rod (8), and the connecting rod (8) is provided with a second weight reduction groove (10).

5. The piston structure in the cylinder of an air conditioning compressor according to claim 4, characterized in that, The connecting plate (3) is sleeved on the outside of the fixing block (6), and the fixing block (6) is also provided with a second weight reduction groove (10) inside, and the top side of the fixing block (6) is provided with a threaded groove (13).

6. The piston structure in the cylinder of an air conditioning compressor according to claim 1, characterized in that, The outer sides of the base plate (1), top plate (2) and connecting plate (3) are all coated with nano-Al2O3-TiC composite coating, and the surface of the bolt (7) is coated with CrAlN.

7. The piston structure in the cylinder of an air conditioner compressor according to claim 6, characterized in that, The outer surfaces of the first piston ring (4) and the second piston ring (5) are both coated with DLC.

Images