Pump body structure of compressor, compressor and refrigerator

Abstract

The application provides a pump body structure of a compressor, the compressor and a refrigerator, wherein the pump body structure of the compressor comprises a cylinder base provided with a compression cavity, an opening communicating with the compression cavity and arranged on the cylinder base, the opening being used for guiding gas to enter or exit the compression cavity, and an oil supply hole arranged on the cylinder base and located at the opening, one end of the oil supply hole communicating with the compression cavity and the other end of the oil supply hole communicating with an oil pool of the compressor, a sealing element being arranged in the oil supply hole and being movable in the oil supply hole in the axial direction of the oil supply hole so as to open or close the oil supply hole. According to the application, the defect of large oil discharge amount of the compressor in the prior art can be overcome, and the heat exchange efficiency of refrigerant is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of compressors, in particular to a pump body structure of a compressor, a compressor and a refrigerator. BACKGROUND

[0002] The development trend of the piston compressor market is low cost and high efficiency, and the oil path design of the compressor is an important part of lubricating parts, reducing mechanical movement friction and improving compressor efficiency. At present, in the fully enclosed piston compressor, the oil supply path is mainly designed to store lubricating oil in the oil storage space at the bottom of the shell, and the lubricating oil is lubricated along the oil groove of the shaft diameter by the driving crankshaft. The design of the crankshaft oil path determines the lubricating oil performance of the compressor. If the lubrication is insufficient, the power of the compressor will rise, and the efficiency and reliability will decrease; if the oil amount is too much, the oil throwing height of the crankshaft is too high, and the oil throwing path is too far, which will cause a large amount of lubricating oil to be sucked into the suction silencer, resulting in a large oil discharge rate of the compressor. The large oil discharge amount of the compressor will lead to insufficient lubrication of the parts, causing wear, and also will lead to low efficiency of the refrigerant during evaporation heat exchange, high compressor start rate, and finally increase the power consumption of the refrigerator.

[0003] Due to the technical problems of large oil discharge amount of the compressor in the prior art, which leads to insufficient lubrication of the parts, etc., the present application researches and designs a pump body structure of a compressor, a compressor and a refrigerator. SUMMARY

[0004] Therefore, the technical problem to be solved by the present application is to overcome the defect of large oil discharge amount of the compressor in the prior art, so as to provide a pump body structure of a compressor, a compressor and a refrigerator.

[0005] In order to solve the above problems, the present application provides a pump body structure of a compressor, which comprises:

[0006] A cylinder seat has a compression chamber, an opening is provided on the cylinder seat, the opening is in communication with the compression chamber, the opening is used to guide the gas to enter or exit the compression chamber, an oil supply hole is provided on the cylinder seat, and the oil supply hole is located at the opening, one end of the oil supply hole is in communication with the compression chamber, and the other end is in communication with the oil pool of the compressor, a sealing element is arranged in the oil supply hole, and the sealing element can move in the oil supply hole in the axial direction of the oil supply hole to open or close the oil supply hole.

[0007] In some embodiments, an included angle is formed between the inner wall of the oil supply hole and the outer wall of the sealing element, the included angle is an acute angle, and a piston is arranged in the compression chamber, and the sealing element can open or close the oil supply hole according to the movement of the piston.

[0008] In some embodiments, a plurality of grooves are arranged on the inner wall of the compression cavity along the circumference of the opening, the grooves are located at the opening, and adjacent two grooves are communicated through a communication hole (10), and one end of the oil delivery hole is arranged at the bottom of the groove.

[0009] 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 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 is greater than or equal to the length of the short side of the sealing member.

[0010] In some embodiments, the oil delivery hole comprises a fixed hole and a flow-through hole, the fixed hole has a first end and a second end, the first end communicates with the compression cavity, the second end communicates with the flow-through hole, and the sealing member is located in the fixed hole.

[0011] In some embodiments, the inner diameter of the fixed hole is greater than the outer diameter of the sealing member, the outer diameter of the sealing member is greater than the inner diameter of the flow-through hole, and the sealing member can open or close the flow-through hole when the sealing member moves.

[0012] In some embodiments, an elastic member is arranged in the fixed hole, the sealing member is located between the elastic member and the flow-through hole, and the elastic member can drive the sealing member to move.

[0013] In some embodiments, one end of the elastic member is connected with the sealing member, the other end of the elastic member is connected with the inner wall of the fixed hole, and the inner diameter of the fixed hole is greater than the outer diameter of the elastic member.

[0014] In some embodiments, a baffle is arranged at the end of the elastic member facing away from the sealing member, the baffle is annular, the inner diameter of the fixed hole is greater than the outer diameter of the baffle, and the elastic member can move in the fixed hole.

[0015] The application further provides a compressor comprising the pump body structure of any one of the preceding compressor.

[0016] The application further provides a refrigerator comprising the compressor.

[0017] The pump body structure of the compressor, the compressor and the refrigerator provided by the application have the following beneficial effects:

[0018] The cylinder base is provided with an oil feeding hole, which is located at the opening, and one end of the oil feeding hole is communicated with the compression cavity and the other end is communicated with the oil pool of the compressor. A sealing element is arranged in the oil feeding hole and can move in the oil feeding hole along the axial direction of the oil feeding hole to open or close the oil feeding hole. When the piston runs to the top dead center, a large amount of lubricating oil is present at the opening of the cylinder base. When the gas in the cylinder is compressed, the sealing element moves under the action of the pressure to close the oil feeding hole, and the lubricating oil flows into the oil feeding hole to be stored, thereby preventing the compression cavity from leaking. After the compression and exhaust process is completed, the compressor starts to inhale, and the sealing element moves to open the oil feeding hole. The lubricating oil at the opening flows into the oil pool of the compressor through the oil feeding hole to be used for the next round of oil supply and lubrication, thereby improving the heat exchange efficiency of the refrigerant and reducing the oil discharge rate of the compressor. BRIEF DESCRIPTION OF DRAWINGS

[0019] Figure 1 FIG. 1 is a structural schematic view of a cylinder base in a pump body structure of a compressor according to an embodiment of the present application;

[0020] Figure 2 FIG. 2 is a structural schematic view of an oil feeding hole in the pump body structure of the compressor according to the embodiment of the present application;

[0021] Figure 3 FIG. 3 is a structural schematic view of an elastic element in the pump body structure of the compressor according to the embodiment of the present application;

[0022] Figure 4 FIG. 4 is a structural schematic view of a sealing element in the pump body structure of the compressor according to the embodiment of the present application;

[0023] Figure 5 FIG. 5 is a structural schematic view of a cylinder cover in the pump body structure of the compressor according to the embodiment of the present application;

[0024] Figure 6 FIG. 6 is a sectional view of the cylinder base in the pump body structure of the compressor according to the embodiment of the present application;

[0025] Figure 7 FIG. 7 is a partial enlarged view of Figure 6 FIG. 8 is a partial enlarged view of

[0026] The reference signs are as follows:

[0027] 1, cylinder base; 2, piston; 3, cylinder cover; 4, elastic element; 5, sealing element; 6, groove; 7, oil feeding hole; 8, fixing hole; 9, flow-through hole; 10, communication hole; 11, gasket; 12, valve plate. DETAILED DESCRIPTION

[0028] For reference Figures 1 to 7As shown, according to the embodiment of the present application, a pump body structure of a compressor is provided, comprising: a cylinder base 1 having a compression cavity, the cylinder base 1 is provided with an opening communicating with the compression cavity, the opening is used to guide the gas to enter or exit the compression cavity, the cylinder base 1 is provided with an oil supply hole 7, and the oil supply hole 7 is located at the opening, one end of the oil supply hole 7 communicates with the compression cavity, and the other end communicates with an oil pool of the compressor, a sealing element 5 is arranged in the oil supply hole 7, and the sealing element 5 can move in the oil supply hole 7 in the axial direction of the oil supply hole 7 to open or close the oil supply hole 7. In the technical solution, the opening of the cylinder base 1 is provided with a cylinder cover 3, and a piston 2 is further arranged in the compression cavity, the piston 2 can reciprocate in the compression cavity, and the oil thrown by the crankshaft of the compressor enters the compression cavity, so that there is lubricating oil in the compression cavity. Due to the fact that the running frequency of the compressor in the industry is getting higher and higher, the oiling amount of the crankshaft is large at high frequency, which leads to a large amount of lubricating oil entering the cylinder hole, the lubricating oil is discharged from the compressor through the exhaust passage, the amount of lubricating oil in the shell is greatly reduced, and after a long time of running, the parts are worn due to the lack of lubricating oil, and at the same time, the efficiency of the refrigerant in the evaporation heat exchange is low, the compressor is started frequently, and finally the power consumption of the refrigerator is increased. The cylinder base 1 is provided with an oil supply hole 7, and the oil supply hole 7 is located at the opening, one end of the oil supply hole 7 communicates with the compression cavity, and the other end communicates with the oil pool of the compressor, a sealing element 5 is arranged in the oil supply hole 7, and the sealing element 5 can move in the oil supply hole 7 in the axial direction of the oil supply hole 7 to open or close the oil supply hole 7, when the piston 2 runs to the top dead center, at this time, there is a large amount of lubricating oil at the opening of the cylinder base 1, at this time, when the gas in the cylinder is compressed, the sealing element 5 moves under the action of the pressure to close the oil supply hole 7, and the lubricating oil flows into the oil supply hole for storage to prevent the compression cavity from leaking, after the compression and exhaust process is completed, the compressor starts to inhale, at this time, the sealing element 5 moves to open the oil supply hole 7, and the lubricating oil at the opening flows into the oil pool of the compressor through the oil supply hole 7 for the next round of oil supply and lubrication, which can improve the heat exchange efficiency of the refrigerant and reduce the oil discharge rate of the compressor. Referring to Figure 5As shown, the pump body structure of the compressor of the present application further comprises a cylinder head 3, a gasket 11 and a valve plate 12, specifically, which are the same as the conventional piston compressor structure, and the cylinder head 3 is installed on the cylinder seat 1. An appropriate amount of lubricating oil can improve the sealing effect of the gasket 11 of the cylinder head 3, prevent air leakage, and when the lubricating oil is excessive, a large amount of lubricating oil will be present between the suction valve plate 12 and the valve plate, which will make it difficult for the suction valve plate to open under the action of viscous force, resulting in reduced refrigerating capacity and reduced service life of the valve plate. The piston 2 reciprocates in the compression chamber, and the lubricating oil in the compression chamber mainly enters the compression chamber through the crankshaft oil flinging. Due to the increasing operating frequency of the compressor in the industry at present, the oiling amount of the crankshaft is large at high frequency, which leads to a large amount of lubricating oil entering the compression chamber, the lubricating oil is discharged from the compressor through the exhaust passage, the amount of lubricating oil in the shell is greatly reduced, and after a long time of operation, the insufficient lubricating oil leads to part wear, and also leads to low efficiency of the refrigerant during evaporation heat exchange, high compressor start-up rate, and ultimately increases the power consumption of the refrigerator.

[0029] In some embodiments, the inner wall of the oil feeding hole 7 and the outer wall of the sealing piece 5 have an included angle, the included angle is an acute angle, and the compression chamber is provided with a piston 2, and the sealing piece 5 can open or close the oil feeding hole 7 according to the movement of the piston 2. In this technical solution, the inner wall of the oil feeding hole 7 and the outer wall of the sealing piece 5 have an included angle, and the included angle is an acute angle, so that when the sealing piece 5 moves, the oil feeding hole 7 can be opened or closed, and the lubricating oil in the compression chamber can flow into the oil pool of the compressor shell through the oil feeding hole 7. When the gas in the cylinder is compressed, the sealing piece 5 moves under the action of pressure to close the oil feeding hole 7, and the lubricating oil flows into the oil feeding hole for storage to prevent air leakage in the compression chamber. When the compression and exhaust process is completed, the compressor starts to inhale, at this time, the sealing piece 5 moves to open the oil feeding hole 7, and the lubricating oil at the opening flows into the oil pool of the compressor through the oil feeding hole 7.

[0030] In some embodiments, referring to Figure 1 As shown, a plurality of grooves 6 are arranged on the inner wall of the compression chamber along the circumference of the opening, the grooves 6 are located at the opening, adjacent two grooves 6 are connected through a communication hole 10, and one end of the oil feeding hole 7 is arranged at the bottom of the groove 6.

[0031] The technical scheme, the circumferential direction of the opening, the inner wall of the compression cavity is provided with a plurality of grooves 6, the groove 6 is located at the opening, the adjacent two grooves 6 are communicated by the communication hole 10, the communication hole 10 is arranged on the inner end face of the groove 6, and is located below the inner wall of the compression cavity, when the piston 2 runs to the top dead center, a large amount of lubricating oil will be on the top of the cylinder seat 1, the lubricating oil flows into the oil delivery hole 7 through the groove 6, a plurality of grooves 6 are arranged in a ring shape, the ring groove structure is discontinuous, that is, part of the area is consistent with the diameter of the compression cavity, the non-communicating part is designed with the communication hole 10, the lubricating oil on the top of the compression cavity can flow into the oil delivery hole 7 through the communication hole 10, the dispersed grooves 6 can avoid the problems of piston wear and excessive clearance volume. The communication hole 10 is in the structure of rectangle, trapezoid, circle, semicircle and the like, which is convenient for lubricating oil circulation.

[0032] In some embodiments, the longitudinal section of the inner wall of the oil delivery hole 7 and the longitudinal section of the sealing element 5 are in trapezoidal shape, the long side of the trapezoidal shape faces the compression cavity, the short side faces away from the compression cavity, 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 element 5. In the technical scheme, the longitudinal section of the inner wall of the oil delivery hole 7 and the longitudinal section of the sealing element 5 are in trapezoidal shape, the long side of the trapezoidal shape faces the compression cavity, the short side faces away from the compression cavity, 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 element 5. The movement of the sealing element 5 in the oil delivery hole 7 is ensured, so that the side wall of the sealing element 5 matches the side wall of the oil delivery hole 7, the opening and closing of the oil delivery hole 7 is more convenient, the gradient control is accurate, the installation is simple, the structure is reliable, and the feasibility is strong.

[0033] In some embodiments, referring to Figure 2 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 cavity, the second end communicates with the flow hole 9, and the sealing element 5 is located in the fixed hole 8. In the technical scheme, 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 cavity, and the second end communicates with the flow hole 9, so that the lubricating oil in the compression cavity can be stored in the fixed hole 8, and the oil delivery efficiency of the oil delivery hole 7 is improved.

[0034] In some embodiments, the inner diameter of the fixed hole 8 is greater than the outer diameter of the sealing member 5, the outer diameter of the sealing member 5 is greater than the inner diameter of the flow-through hole 9, and the sealing member 5 can open or close the flow-through hole 9 when the sealing member 5 moves. In this technical solution, when the gas in the compression cavity is compressed, the pressure is large, and under the action of the pressure, the sealing member 5 makes the flow-through hole 9 closed, preventing the compression cavity from leaking; after the compression exhaust process is completed, the compressor starts to inhale, the sealing member 5 rises, the lubricating oil flows out of the flow-through hole 9 to the shell, and the next round of oil supply lubrication is performed, which can improve the heat exchange efficiency of the refrigerant and reduce the oil discharge rate of the compressor.

[0035] In some embodiments, referring to Figs. 1 to 3, Figure 6 and Figure 7 the elastic member 4 is arranged in the fixed hole 8, the sealing member 5 is located between the elastic member 4 and the flow-through hole 9, and the elastic member 4 can drive the sealing member 5 to move. In this technical solution, the elastic member 4 is arranged in the fixed hole 8, the sealing member 5 is located between the elastic member 4 and the flow-through hole 9, and the elastic member 4 drives the sealing member 5 to move, thereby opening or closing the flow-through hole 9.

[0036] In some embodiments, referring to Figs. 1 to 3, Figure 3 and Figure 4 one end of the elastic member 4 is connected to the sealing member 5, the other end is connected to the inner wall of the fixed hole 8, and the inner diameter of the fixed hole 8 is greater than the outer diameter of the elastic member 4. In this technical solution, when the gas in the compression cavity is compressed, the pressure is large, and under the action of the pressure, the sealing member 5 moves, thereby stretching the elastic member 4 and closing the flow-through hole 9, preventing the compression cavity from leaking; after the compression exhaust process is completed, the compressor starts to inhale, the sealing member 5 rises under the elastic action of the elastic member 4, the lubricating oil flows out of the flow-through hole 9 to the shell, and the next round of oil supply lubrication is performed, which can improve the heat exchange efficiency of the refrigerant and reduce the oil discharge rate of the compressor.

[0037] In some embodiments, one end of the elastic member 4 away from the sealing member 5 is provided with a baffle, the baffle is annular, the inner diameter of the fixed hole 8 is greater than the outer diameter of the baffle, and the elastic member 4 can move in the fixed hole 8. In this technical solution, when the gas in the compression cavity is compressed, the pressure is large, and under the action of the pressure, the baffle continuously compresses the elastic member 4, so that the sealing member 5 is sealed, preventing the leakage; after the compression exhaust process is completed, the compressor starts to inhale, the elastic member 4 rebounds, the sealing member 5 rises, the lubricating oil flows out of the oil leakage hole to the shell, and the next round of oil supply lubrication is performed. The elastic member 4 can be a spring.

[0038] The application also provides a compressor comprising the pump body structure of any one of the preceding compressor.

[0039] The application further provides a refrigerator comprising the compressor.

[0040] The above merely provides the preferred embodiment of the application, and is not intended to limit the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the application shall fall within the protection scope of the application. The above merely provides the preferred embodiment of the application, and is not intended to limit the application. Any modification, equivalent replacement, and improvement made within the spirit and principle of the application shall fall within the protection scope of the application.

Claims

1. A pump body structure of a compressor, characterized by: The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor.

2. The pump body structure of the compressor according to claim 1, characterized by: The application relates to a pump body structure of a compressor.

3. The pump body structure of the compressor according to claim 1, characterized by: The application relates to a pump body structure of a compressor.

4. The pump body structure of the compressor according to claim 1, characterized by: The application relates to a pump body structure of a compressor.

5. The pump body structure of the compressor according to claim 4, characterized by: The application relates to a pump body structure of a compressor.

6. The pump body structure of the compressor according to claim 4, characterized by: The application relates to a pump body structure of a compressor.

7. The pump body structure of the compressor according to claim 6, characterized by: The application relates to a pump body structure of a compressor.

8. The pump body structure of the compressor according to claim 6, characterized by: The application relates to a pump body structure of a compressor.

9. A compressor characterized by: The application relates to a pump body structure of a compressor.

10. A refrigerator characterized by comprising: The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. The application relates to a pump body structure of a compressor. 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