CN116066330A - Pump body structure of a compressor, compressor and refrigerator - Google Patents

Abstract

The invention provides a pump body structure of a compressor, the compressor and a refrigerator, wherein the pump body structure of the compressor comprises a cylinder seat, the cylinder seat is provided with a compression cavity, an opening is arranged on the cylinder seat and is communicated with the compression cavity, the opening is used for guiding gas to enter and exit the compression cavity, an oil delivery hole is arranged on the cylinder seat, the oil delivery hole is positioned at the opening, one end of the oil delivery hole is communicated with the compression cavity, the other end of the oil delivery hole is communicated with an oil pool of the compressor, a sealing piece is arranged in the oil delivery hole, and the sealing piece can move in the oil delivery hole along the axial direction of the oil delivery hole so as to open or close the oil delivery hole. According to the invention, the defect of large oil discharge amount of the compressor in the prior art can be overcome, and the heat exchange efficiency of the refrigerant is improved.

Description

Pump body structure of a compressor, compressor and refrigerator

technical field

The invention relates to the technical field of compressors, in particular to a pump body structure of a compressor, a compressor and a refrigerator.

Background technique

The development trend of the piston compressor market is low cost and high efficiency, among which the oil circuit design of the compressor is an important part of lubricating parts, reducing mechanical friction, and improving compressor efficiency. At present, in the fully enclosed piston compressor, the design of the oil supply path is mainly to store the lubricating oil in the oil storage space at the bottom of the casing, and drive the crankshaft to make the lubricating oil lubricate along the oil groove on the shaft diameter. The design of the crankshaft oil circuit determines the lubricant performance of the compressor. If the lubrication is insufficient, the power of the compressor will increase, and the efficiency and reliability will decrease; if there is a large amount of oil, the crankshaft oil throwing height is too high, and the oil throwing path is far away, a large amount of lubricating oil will be sucked into the suction muffler, causing The oil discharge rate of the compressor is large. The large amount of oil discharged by the compressor will lead to insufficient lubrication of the parts, resulting in wear and tear. At the same time, it will also lead to low efficiency of the refrigerant in evaporation and heat exchange, and a high operating rate of the compressor, which will eventually increase the power consumption of the refrigerator.

Because the compressor in the prior art has a large amount of oil discharge, resulting in technical problems such as insufficient lubrication of parts, the present invention researches and designs a pump body structure of a compressor, a compressor and a refrigerator.

Contents of the invention

Therefore, the technical problem to be solved by the present invention is to overcome the defect of large oil discharge capacity of the compressor in the prior art, so as to provide a pump body structure of the compressor, the compressor and the refrigerator.

In order to solve the above problems, the present invention provides a pump body structure of a compressor, which includes:

Cylinder seat, the cylinder seat has a compression chamber, and an opening is arranged on the cylinder seat, and the opening communicates with the compression chamber, and the opening is used to guide gas in and out of the compression chamber, and the cylinder seat is provided with There is an oil delivery hole, and the oil delivery hole is located at the opening, one end of the oil delivery hole is connected to the compression chamber, and the other end is connected to the oil pool of the compressor, and a seal is arranged in the oil delivery hole, Along the axial direction of the oil delivery hole, the sealing member can move in the oil delivery hole to open or close the oil delivery hole.

In some embodiments, there is an included angle between the inner wall of the oil delivery hole and the outer wall of the sealing member, and the included angle is an acute angle, and a piston is arranged in the compression chamber, and the sealing member can The movement of the piston opens or closes the oil delivery hole.

In some embodiments, along the circumferential direction of the opening, the inner wall of the compression chamber is provided with a plurality of grooves, the grooves are located at the opening, and two adjacent grooves are connected by a The holes (10) are connected, and one end of the oil delivery hole is arranged at the bottom of the groove.

In some embodiments, the longitudinal section of the inner wall of the oil delivery hole and the longitudinal section of the sealing member are trapezoidal, the long side of the trapezoid faces the compression chamber, and the short side faces away from the compression chamber, and the The length of the short side of the oil delivery hole is greater than or equal to the length of the short side of the sealing member.

In some embodiments, the oil delivery hole includes a fixed hole and a flow hole, the fixed hole has a first end and a second end, the first end communicates with the compression chamber, and the second end communicates with the a flow hole, and the seal is located in the fixing hole.

In some embodiments, the inner diameter of the fixing hole is larger than the outer diameter of the sealing member, the outer diameter of the sealing member is larger than the inner diameter of the flow hole, and the sealing member can be opened when the sealing member moves Or close the flow holes.

In some embodiments, an elastic member is disposed in the fixing hole, the sealing member is located between the elastic member and the flow hole, and the elastic member can drive the sealing member to move.

In some embodiments, one end of the elastic member is connected to the sealing member, and the other end is connected to the inner wall of the fixing hole, and the inner diameter of the fixing hole is larger than the outer diameter of the elastic member.

In some embodiments, a baffle is provided at the end of the elastic member facing away from the sealing member, the baffle is annular, the inner diameter of the fixing hole is larger than the outer diameter of the baffle, and the elastic member Can move in the fixed hole.

The present invention also provides a compressor, including the pump body structure of the compressor described in any one of the preceding items.

The present invention also provides a refrigerator, including the above-mentioned compressor.

A pump body structure of a compressor, a compressor and a refrigerator provided by the present invention have the following beneficial effects:

An oil delivery hole is arranged on the cylinder block, and the oil delivery hole is located at the opening, one end of the oil delivery hole is connected to the compression chamber, and the other end is connected to the oil pool of the compressor, and the oil delivery hole is set There is a seal, along the axial direction of the oil delivery hole, the seal can move in the oil delivery hole to open or close the oil delivery hole, when the piston moves to the top dead center, at this time , There will be a large amount of lubricating oil at the opening of the cylinder seat. At this time, when the gas in the cylinder is compressed, the seal moves under the action of pressure to close the oil delivery hole, and the lubricating oil will flow into the oil delivery hole for storage. Prevent air leakage in the compression chamber. When the compression and exhaust process is completed, the compressor starts to suck air. At this time, the seal moves to open the oil delivery hole, and the lubricating oil at the opening flows into the oil pool of the compressor through the oil delivery hole. Carrying out the next round of oil supply lubrication can not only improve the heat exchange efficiency of the refrigerant, but also reduce the oil discharge rate of the compressor.

Description of drawings

Fig. 1 is the schematic structural view of the cylinder block in the pump body structure of the compressor of the embodiment of the present invention;

Fig. 2 is a structural schematic diagram of an oil delivery hole in a pump body structure of a compressor according to an embodiment of the present invention;

3 is a structural schematic diagram of an elastic member in a pump body structure of a compressor according to an embodiment of the present invention;

Fig. 4 is a structural schematic diagram of a seal in a pump body structure of a compressor according to an embodiment of the present invention;

5 is a schematic structural view of the cylinder head in the pump body structure of the compressor according to the embodiment of the present invention;

6 is a cross-sectional view of the cylinder block in the pump body structure of the compressor according to the embodiment of the present invention;

FIG. 7 is a partially enlarged view of FIG. 6 .

The reference signs are indicated as:

1. Cylinder seat; 2. Piston; 3. Cylinder head; 4. Elastic member; 5. Seal; 6. Groove; 7. Oil delivery hole; 8. Fixing hole; 9. Flow hole; 10. Communication hole; 11. Gasket; 12. Valve plate.

Detailed ways

Referring to Fig. 1 to Fig. 7, according to an embodiment of the present invention, a pump body structure of a compressor is provided, including: a cylinder block 1, the cylinder block 1 has a compression chamber, and the cylinder block 1 is provided with Opening, the opening communicates with the compression chamber, the opening is used to guide gas into and out of the compression chamber, the cylinder block 1 is provided with an oil delivery hole 7, and the oil delivery hole 7 is located in the At the opening, one end of the oil delivery hole 7 is connected to the compression chamber, and the other end is connected to the oil pool of the compressor. A seal 5 is arranged in the oil delivery hole 7, along the axial direction of the oil delivery hole 7, the The sealing member 5 can move in the oil delivery hole 7 to make the oil delivery hole 7 open or close. In this technical solution, a cylinder head 3 is provided at the opening of the cylinder block 1, and a piston 2 is also provided in the compression chamber. The piston 2 can reciprocate in the compression chamber, and the crankshaft of the compressor throws oil into the compression chamber, making There is lubricating oil in the compression chamber. Since the operating frequency of compressors in the industry is getting higher and higher, the amount of oil on the crankshaft is larger at high frequency, resulting in a large amount of lubricating oil entering the cylinder bore, and the lubricating oil is discharged through the exhaust channel. For the compressor, the lubricating oil in the shell is greatly reduced. After a long time of operation, the lack of lubricating oil will cause the parts to wear out. At the same time, the efficiency of the refrigerant in evaporation and heat exchange will be low, and the compressor will have a high operating rate, which will eventually increase the power consumption of the refrigerator. . The cylinder block 1 is provided with an oil delivery hole 7, and the oil delivery hole 7 is located at the opening, one end of the oil delivery hole 7 communicates with the compression chamber, and the other end communicates with the oil pool of the compressor. A seal 5 is arranged in the oil hole 7, and along the axial direction of the oil delivery hole 7, the seal 5 can move in the oil delivery hole 7, so that the oil delivery hole 7 is opened or closed, when When the piston 2 runs to the top dead center, at this time, there will be a large amount of lubricating oil at the opening of the cylinder block 1. At this time, when the gas in the cylinder is compressed, the seal 5 moves under the action of pressure to make the oil delivery hole 7 is closed, the lubricating oil will flow into the oil delivery hole for storage to prevent air leakage in the compression chamber. After the compression and exhaust process is completed, the compressor will start to inhale. The lubricating oil at the place flows into the oil pool of the compressor through the oil delivery hole 7 for the next round of oil supply lubrication, which can not only improve the heat exchange efficiency of the refrigerant, but also reduce the oil discharge rate of the compressor. Referring to Fig. 5, the pump body structure of the compressor of the present invention also includes a cylinder head 3, a gasket 11 and a valve plate 12, specifically, it has the same structure as a conventional piston compressor, and the cylinder head 3 is installed on the cylinder block 1 . An appropriate amount of lubricating oil can improve the sealing effect of the gasket 11 of the cylinder head 3 and prevent air leakage. When there is too much lubricating oil, there will be a large amount of lubricating oil between the suction valve plate 12 and the valve plate. It makes it difficult to open the suction valve, resulting in a reduction in cooling capacity and a reduction in the life of the valve. Piston 2 reciprocates in the compression chamber, and the lubricating oil in the compression chamber enters the compression chamber mainly through crankshaft throwing oil. As the operating frequency of compressors in the industry is getting higher and higher, the amount of oil on the crankshaft is relatively large at high frequencies, resulting in a large amount of lubricating oil entering the compression chamber, and the lubricating oil is discharged from the compressor through the exhaust passage, and the lubricating oil in the housing A large reduction, long-term operation due to lack of lubricating oil will lead to wear of parts, but also lead to low efficiency of refrigerant evaporation and heat exchange, high compressor start-up rate, and ultimately increase the power consumption of the refrigerator.

In some embodiments, there is an included angle between the inner wall of the oil delivery hole 7 and the outer wall of the sealing member 5, and the included angle is an acute angle, and a piston 2 is arranged in the compression chamber, and the sealing member 5 can open or close the oil delivery hole 7 according to the movement of the piston 2 . In this technical solution, there is an included angle between the inner wall of the oil delivery hole 7 and the outer wall of the sealing member 5, and the included angle is an acute angle, so that when the sealing member 5 moves, the oil delivery hole 7 can be opened or closed to ensure that the pressure in the compression chamber is high. The lubricating oil can flow into the oil sump of the compressor housing through the oil delivery hole 7. When the gas in the cylinder is compressed, the seal 5 moves under the pressure to close the oil delivery hole 7, and the lubricating oil will flow into the oil delivery hole for storage to prevent the compression cavity from leaking. When the compression and exhaust process is completed, The compressor starts to suck air. At this time, the sealing member 5 moves to open the oil delivery hole 7, and the lubricating oil at the opening flows into the oil pool of the compressor through the oil delivery hole 7.

In some embodiments, as shown in FIG. 1 , along the circumferential direction of the opening, the inner wall of the compression chamber is provided with a plurality of grooves 6 , and the grooves 6 are located at the opening, two adjacent The grooves 6 are connected through communication holes 10 , and one end of the oil delivery hole 7 is arranged at the bottom of the grooves 6 .

In this technical solution, a plurality of grooves 6 are provided on the inner wall of the compression cavity in the circumferential direction of the opening, and the grooves 6 are located at the opening, and the passage between two adjacent grooves 6 The communication hole 10 is connected, and the communication hole 10 is arranged on the inner end surface of the groove 6, and is located under the inner wall of the compression chamber. It flows into the oil delivery hole 7 through the groove 6. Multiple grooves 6 are arranged in a ring shape. The structure of the ring groove is discontinuous, that is, some areas are consistent with the diameter of the compression chamber, and the disconnected part is designed with a communication hole 10. The top of the compression chamber is a The lubricating oil in the ring can flow into the oil delivery hole 7 through the communication hole 10, and the scattered grooves 6 can avoid the problems of piston wear and excessive clearance volume. The structure of the communication hole 10 is rectangular, trapezoidal, circular, semicircular, etc., which is convenient for the circulation of lubricating oil.

In some embodiments, the longitudinal section of the inner wall of the oil delivery hole 7 and the longitudinal section of the sealing member 5 are trapezoidal, the long side of the trapezoid faces the compression chamber, and the short side faces away from the compression chamber, and , the length of the short side of the oil delivery hole 7 is greater than or equal to the length of the short side of the sealing member 5 . In this technical solution, the longitudinal section of the inner wall of the oil delivery hole 7 and the longitudinal section of the sealing member 5 are trapezoidal, the long side of the trapezoid faces the compression chamber, and the short side faces away from the compression chamber, and, The length of the short side of the oil delivery hole 7 is greater than or equal to the length of the short side of the sealing member 5 . Ensure that the seal 5 moves in the oil delivery hole 7, so that the side wall of the seal 5 matches the side wall of the oil delivery hole 7, it is more convenient to open or close the oil delivery hole 7, the control gradient is precise, the installation is simple, and the structure is reliable. Feasibility is strong.

In some embodiments, as shown in FIG. 2, the oil delivery hole 7 includes a fixing hole 8 and a flow hole 9, the fixing hole 8 has a first end and a second end, and the first end communicates with the compression cavity, the second end communicates with the flow hole 9 , and the sealing member 5 is located in the fixing hole 8 . In this technical solution, the oil delivery hole 7 includes a fixed hole 8 and a flow hole 9, the fixed hole 8 has a first end and a second end, the first end communicates with the compression chamber, and the second end communicates with the The above-mentioned flow holes 9 enable the lubricating oil in the compression chamber to be stored in the fixed holes 8, thereby improving the oil delivery efficiency of the oil delivery holes 7.

In some embodiments, the inner diameter of the fixing hole 8 is larger than the outer diameter of the sealing member 5, and the outer diameter of the sealing member 5 is larger than the inner diameter of the flow hole 9. When the sealing member 5 moves, the The seal 5 can open or close the flow hole 9 . In this technical solution, when the gas in the compression chamber is compressed, the pressure is relatively high, and under the action of the pressure, the seal member 5 closes the flow hole 9 to prevent air leakage in the compression chamber; when the compression and exhaust process is completed, the compressor starts to suck Gas, the sealing member 5 rises, and the lubricating oil flows out from the flow hole 9 into the housing for the next round of oil supply lubrication, which can not only improve the heat exchange efficiency of the refrigerant, but also reduce the oil discharge rate of the compressor.

In some embodiments, as shown in FIG. 6 and FIG. 7 , the fixing hole 8 is provided with an elastic member 4, and the sealing member 5 is located between the elastic member 4 and the circulation hole 9. The elastic member 4 can drive the sealing member 5 to move. In this technical solution, an elastic member 4 is arranged in the fixing hole 8, and the sealing member 5 is located between the elastic member 4 and the flow hole 9, and the sealing member 5 is driven to move by the elastic member 4, thereby opening or closing the The above-mentioned flow hole 9.

In some embodiments, as shown in FIG. 3 and FIG. 4 , one end of the elastic member 4 is connected to the sealing member 5 , and the other end is connected to the inner wall of the fixing hole 8 , and the fixing hole 8 The inner diameter is greater than the outer diameter of the elastic member 4 . In this technical solution, when the gas in the compression chamber is compressed, the pressure is high, and the sealing member 5 moves under the action of the pressure, so that the elastic member 4 is stretched, and the flow hole 9 is closed to prevent the compression chamber from leaking; After the gas process is completed, the compressor starts to suck air, the sealing member 5 rises under the elastic action of the elastic member 4, and the lubricating oil flows out from the flow hole 9 into the housing for the next round of oil supply and lubrication, which can improve the performance of the refrigerant. The heat exchange efficiency can be improved, and the oil discharge rate of the compressor can be reduced.

In some embodiments, a baffle is provided at the end of the elastic member 4 facing away from the sealing member 5, the baffle is annular, and the inner diameter of the fixing hole 8 is larger than the outer diameter of the baffle, so The elastic member 4 can move in the fixing hole 8 . In this technical solution, when the gas in the compression chamber is compressed, the pressure is relatively high. Under the action of the pressure, the baffle plate makes the elastic member 4 continuously compress, so that the sealing member 5 is sealed to prevent air leakage; when the compression and exhaust process is completed, , the compressor starts to suck air, the elastic member 4 rebounds, the sealing member 5 rises, and the lubricating oil flows out into the housing from the oil leakage hole for the next round of oil supply lubrication. Elastic member 4 can adopt spring.

The present invention also provides a compressor, including the pump body structure of the compressor described in any one of the preceding items.

The present invention also provides a refrigerator, including the above-mentioned compressor.

The above descriptions are only preferred embodiments of the present invention, and are not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the protection of the present invention. within range. The above is only a preferred embodiment of the present invention, it should be pointed out that for those of ordinary skill in the art, without departing from the technical principle of the present invention, some improvements and modifications can also be made, these improvements and modifications It should also be regarded as the protection scope of the present invention.

Claims (11)

1. The utility model provides a pump body structure of compressor which characterized in that: comprising the following steps: the cylinder block (1), cylinder block (1) has the compression chamber, be provided with the opening on cylinder block (1), the opening with the compression chamber is linked together, the opening is used for guiding gas business turn over compression chamber, be provided with oil delivery hole (7) on cylinder block (1), just, oil delivery hole (7) are located opening part, oil delivery hole (7) one end intercommunication compression chamber, the oil reservoir of other end intercommunication compressor, be provided with sealing member (5) in oil delivery hole (7), follow the axial of oil delivery hole (7), sealing member (5) can be in oil delivery hole (7) internal motion, so that oil delivery hole (7) are opened or are closed.

2. The pump body structure of the compressor according to claim 1, wherein: the oil delivery hole (7) inner wall and the sealing element (5) outer wall between have the contained angle, the contained angle is the acute angle, just, be provided with piston (2) in the compression chamber, sealing element (5) can be according to the motion of piston (2), open or close oil delivery hole (7).

3. The pump body structure of the compressor according to claim 1, wherein: along open-ended circumference, be provided with a plurality of recesses (6) on the inner wall of compression chamber, recess (6) are located the opening part, adjacent two be linked together through intercommunicating pore (10) between recess (6), the one end setting of defeated oil hole (7) is in the bottom of recess (6).

4. The pump body structure of the compressor according to claim 1, wherein: the longitudinal section of the inner wall of the oil delivery hole (7) and the longitudinal section of the sealing piece (5) are trapezoid, the long side of the trapezoid faces the compression cavity, the short side of the trapezoid faces away from the compression cavity, and the length of the short side of the oil delivery hole (7) is larger than or equal to the length of the short side of the sealing piece (5).

5. The pump body structure of the compressor according to claim 1, wherein: the oil delivery hole (7) comprises a fixing hole (8) and a circulating hole (9), the fixing hole (8) is provided with a first end and a second end, the first end is communicated with the compression cavity, the second end is communicated with the circulating hole (9), and the sealing piece (5) is located in the fixing hole (8).

6. The pump body structure of the compressor according to claim 5, the method is characterized in that: the inner diameter of the fixing hole (8) is larger than the outer diameter of the sealing piece (5), the outer diameter of the sealing piece (5) is larger than the inner diameter of the circulating hole (9), and when the sealing piece (5) moves, the sealing piece (5) can open or close the circulating hole (9).

7. The pump body structure of the compressor according to claim 5, wherein: elastic pieces (4) are arranged in the fixing holes (8), the sealing pieces (5) are located between the elastic pieces (4) and the circulating holes (9), and the elastic pieces (4) can drive the sealing pieces (5) to move.

8. The pump body structure of the compressor according to claim 7, wherein: one end of the elastic piece (4) is connected with the sealing piece (5), the other end of the elastic piece is connected with the inner wall of the fixing hole (8), and the inner diameter of the fixing hole (8) is larger than the outer diameter of the elastic piece (4).

9. The pump body structure of the compressor according to claim 7, wherein: the elastic piece (4) is provided with a baffle at one end facing away from the sealing piece (5), the baffle is annular, the inner diameter of the fixing hole (8) is larger than the outer diameter of the baffle, and the elastic piece (4) can move in the fixing hole (8).

10. A compressor, characterized in that: pump body structure comprising a compressor according to any one of claims 1 to 9.

11. A refrigerator, characterized in that: comprising the compressor of claim 10.

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