CN217481540U - Compressor oil return structure, compressor and air conditioner - Google Patents

Abstract

The utility model provides a compressor oil return structure, compressor and air conditioner, wherein, a compressor oil return structure, include: lid, casing, drive unit and compression unit, lid are connected with the casing and form the cavity, and drive unit and compression unit are located the cavity, are provided with the oil storage chamber between drive unit and the compression unit, and compression unit exhaust oil can get into in the oil storage chamber, be provided with in the cavity and be used for inspiratory first cavity, just, the gas motion that inhales in the first cavity can pass through the outer wall in oil storage chamber, the outer wall in oil storage chamber can produce the heat transfer with the gas in the first cavity. The defects that in the prior art, the oil return lubrication structure directly returns high-temperature lubricating oil to the lubrication part in the compressor after exhaust centrifugal separation, the temperature of the lubricating oil is high, and the lubrication effect is poor can be overcome.

Description

Compressor oil return structure, compressor and air conditioner

Technical Field

The utility model relates to a compressor technical field, concretely relates to compressor oil return structure, compressor and air conditioner.

Background

The aluminum alloy scroll compressor for the vehicle has no stable oil pool inside the compressor for an oil pumping system inside the compressor to mechanically supply oil to a lubricating part, but depends on a suction refrigerant of the compressor to carry lubricating oil, and the throttling oil return design is carried out on the lubricating oil after the refrigerant and the lubricating oil are discharged and centrifugally separated. Therefore, the oil return efficiency of the centrifugal separation of the exhaust gas is critical to the performance and reliability of the compressor. The existing centrifugal separation structure is mature, the separation efficiency of the simple centrifugal separation structure is high, and most of lubricating oil can be completely separated from the refrigerant. However, the separated lubricating oil flows back into the compressor again, and the prior art schemes have a large problem and mainly focus on:

1. in the oil return lubrication structure in the prior art, high-temperature lubricating oil after exhaust centrifugal separation directly flows back to a lubrication part in a compressor, the temperature of the lubricating oil is high, and the lubrication effect is poor;

2. the oil return and storage structure is unreasonable in position arrangement: the oil storage cavity and the centrifugal separation structure are arranged in parallel, so that the liquid level of the oil storage cavity can only reach the bottom height of the centrifugal separation structure at the highest level, otherwise, the liquid level enters the exhaust pipe from the bottom inlet of the centrifugal separator, the space of the oil storage cavity of the structure can not be fully utilized actually, and the oil storage structure is easily influenced by the centrifugal separation structure, so that the oil storage quantity in the actual oil storage structure is small or separated lubricating oil is taken away by a refrigerant;

3. the oil return structure directly adopts a throttling structure to communicate high pressure to a low pressure or medium pressure lubricating part, and because the throttling pressure difference is large, high pressure gas enters the low pressure or medium pressure part due to insufficient throttling when a large pressure difference working condition exists in actual operation, so that the performance of the compressor is influenced; the reflux quantity is too small under the working condition of small pressure difference, the lubricating oil separated by the centrifugal separation structure cannot flow back to the compressor in time, and redundant lubricating oil is in the separation structure and is taken away by the refrigerant again, so that the heat exchange effect of the system is poor.

The patent No. US6511530B2 discloses a structure for discharging and separating oil and storing oil in a compressor, wherein a discharge cavity 13a, an oil-gas separation cavity and a lubricating oil storage cavity are arranged between the back surface of a fixed scroll of the compressor and a discharge cover. The oil storage cavity returns to the internal suction cavity of the compressor through the oil return channel, so that the circulation of lubricating oil in the compressor is realized. However, there are the following problems: in order not to influence the oil separation efficiency of the separation chamber, the oil storage chamber is arranged below the oil return chamber (in the gravity direction) and the highest liquid level in the oil storage chamber is required to be lower than the oil outlet of the oil return chamber, otherwise, the lubricating oil enters the separation chamber to influence the oil separation effect. The problem with this type of reservoir technology is that the reservoir volume is small and excess lubricant is still carried into the refrigeration system by the refrigerant. Otherwise, in order to increase the volume of the oil storage chamber, the axial height of the oil storage chamber needs to be increased, which causes problems of large size, heavy weight, high production cost and the like of the compressor. Meanwhile, the pressure in the oil storage cavity is high exhaust pressure, and is influenced by the exhaust fluctuation of the pump body, and the exhaust pressure fluctuation is large, so that the liquid level in the oil storage cavity is difficult to stabilize and fluctuates greatly along with the exhaust.

Patent No. CN107605726A discloses another oil return structure, in which an oil return passage in a compressor discharge cover communicates a stationary disc and a bracket, and a throttle passage is provided in the bracket, so that lubricating oil in the oil return passage is introduced into a lubricating cavity in the bracket, thereby realizing lubrication of a bearing in the lubricating cavity. Although directly introduce the lubricated part of key in the compressor with lubricating oil, because the lubricated intracavity is for holding the chamber, the cavity space is restricted, and most lubricating oil can not in time flow back to in the compressor in the oil return passageway, leads to a large amount of lubricating oil can get into refrigerating system along with the exhaust, influences system's heat transfer effect.

SUMMERY OF THE UTILITY MODEL

Therefore, the utility model provides a compressor oil return structure, compressor and air conditioner can overcome among the prior art oil return lubrication structure and all be from the lubricated position of the inside compressor of direct reflux of the lubricating oil of exhaust centrifugal separation back high temperature, and lubricating oil temperature is high, the poor defect of lubricated effect.

In order to solve the above problem, the utility model provides a compressor oil return structure, include: lid, casing, drive unit and compression unit, the lid with the casing is connected and is formed the cavity, drive unit with the compression unit is located in the cavity, drive unit with be provided with the oil storage chamber between the compression unit, compression unit exhaust oil can get into in the oil storage chamber, be provided with in the cavity and be used for inspiratory first cavity, just, the gas motion that inhales in the first cavity can pass through the outer wall in oil storage chamber, the outer wall in oil storage chamber can produce the heat transfer with the gas in the first cavity.

In some embodiments, the drive unit includes a drive motor and a crankshaft; compressor oil return structure still includes the support, the oil storage chamber sets up in the support, it has closed the second cavity to enclose between support and the bent axle, the oil storage chamber is located the radial outside of second cavity.

In some embodiments, an oil return cavity is provided in the cover body, and the oil storage cavity can be communicated with the oil return cavity.

In some embodiments, the stent is located within the first cavity; the compression unit comprises a static disc and a movable disc, a third cavity is arranged between the static disc and the support, a compression cavity is arranged between the static disc and the movable disc, the third cavity is communicated with the compression cavity, and the movable disc can provide power for gas in the first cavity so that the gas can enter the compression cavity through the third cavity.

In some embodiments, the oil storage chamber can be communicated with the oil return chamber through an oil inlet channel; the oil inlet passage comprises a first passage and a second passage, the first passage is arranged on the support, the second passage is arranged on the static disc, one end of the first passage is communicated with the oil storage cavity, the other end of the first passage is communicated with the second passage, and the second passage is communicated with the oil return cavity.

In some embodiments, a first gasket is arranged between the movable disc and the bracket, a communication channel b is arranged on the first gasket, one end of the communication channel b is communicated with the second channel, the other end of the communication channel b is communicated with the first channel, and a throttling structure is arranged in any one or more of the communication channel b, the second channel and the first channel, so that a pressure difference is generated between the pressure in the oil storage cavity and the pressure in the oil return cavity.

In some embodiments, an oil discharge channel b is communicated with the oil storage cavity, one end of the oil discharge channel b is communicated with the third cavity, and the other end of the oil discharge channel b is communicated with the oil storage cavity; the oil discharge channel b comprises a fourth channel and a throttling channel a, the fourth channel is arranged on the support, the throttling channel a is arranged on the first gasket, and one end of the throttling channel a is communicated with the fourth channel and the other end of the throttling channel a is communicated with the third cavity.

In some embodiments, the oil discharge channel b further includes a throttling channel c, the throttling channel c is disposed on the bracket, one end of the throttling channel c is communicated with the oil storage cavity, the other end of the throttling channel c is communicated with the fourth channel, a throttling element is disposed in the throttling channel c, and the throttling element enables oil to be throttled and depressurized in the throttling channel c, so that a pressure difference is generated between the oil storage cavity and the third cavity.

In some embodiments, an opening is formed in the side, facing the driving motor, of the bracket, and the opening is communicated with the oil storage cavity; the compressor oil return structure further comprises a first cover plate, wherein the first cover plate is arranged at the opening, so that the oil storage cavity can be sealed through the first cover plate.

In some embodiments, an oil discharge channel a is arranged on the first cover plate, one end of the oil discharge channel a is communicated with the oil storage cavity, and the other end of the oil discharge channel a is communicated with the first cavity; the oil discharge channel a comprises an oil discharge groove and a third channel, the oil discharge groove is formed in the end face of the first cover plate, the third channel is formed in the side wall of the first cover plate, the third channel is communicated with the oil discharge groove, and after gas is sucked into the first cavity, the gas can drive oil discharged from the oil discharge channel a to move.

In some embodiments, the first cover plate is connected with the bracket through a locking member, and a sealing member is arranged on the locking member and can enable the first cover plate to be sealed with the bracket.

In some embodiments, the second cavity is in communication with the oil reservoir cavity such that the pressure in the second cavity is the same as the pressure in the oil reservoir cavity.

In some embodiments, an eighth channel is arranged on the crankshaft along the axial direction of the crankshaft, one end of the eighth channel is communicated with the second cavity, and the other end of the eighth channel penetrates through the end of the crankshaft far away from the movable disc.

In some embodiments, a seventh channel is disposed on the movable plate, and one end of the seventh channel is communicated with the second cavity, and the other end of the seventh channel is communicated with the compression cavity.

In some embodiments, a second cover plate is arranged in the oil storage cavity, the second cover plate divides the space of the oil storage cavity into an oil storage chamber and a buffer cavity, a communication hole is formed in the second cover plate, and one end of the communication hole is communicated with the oil storage chamber while the other end of the communication hole is communicated with the buffer cavity.

In some embodiments, the buffer cavity is communicated with the second cavity through a sixth channel.

In some embodiments, a fifth channel is arranged on the bracket, a ninth channel is arranged on the static disc, a first through hole is further arranged on the static disc, the first through hole is communicated with the compression cavity, one end of the ninth channel is communicated with the first through hole, the other end of the ninth channel is communicated with the fifth channel, and the fifth channel is communicated with the buffer cavity.

In some embodiments, the oil storage chamber further comprises a plurality of fixing pieces, the fixing pieces are connected and arranged between the inner wall and the outer wall of the support, and the fixing pieces are arranged along the circumferential direction of the support at intervals so as to divide the oil storage chamber into a plurality of cavities through the fixing pieces.

In some embodiments, the bracket is provided with an opening on one side facing the movable plate, and the opening is communicated with the oil storage cavity; the compressor oil return structure further comprises a third cover plate, wherein the third cover plate is arranged at the opening, so that the oil storage cavity can be sealed through the third cover plate.

In some embodiments, the oil storage chamber is provided with a twelfth channel, one end of the twelfth channel is communicated with the oil storage chamber, and the other end of the twelfth channel is communicated with the oil return chamber; the twelfth channel comprises a fourteenth channel, an oil inlet hole and a thirteenth channel, the fourteenth channel is arranged on the support, the fourteenth channel is communicated with the oil storage cavity, the oil inlet hole is arranged on the third cover plate, the thirteenth channel is arranged on the static disc, one end of the oil inlet hole is communicated with the thirteenth channel, the other end of the oil inlet hole is communicated with the thirteenth channel, and the thirteenth channel is communicated with the oil return cavity.

In some embodiments, a second gasket is arranged between the third cover plate and the movable plate, a sixteenth channel is arranged on the second gasket, one end of the sixteenth channel is communicated with the oil inlet, and the other end of the sixteenth channel is communicated with the thirteenth channel.

In some embodiments, the oil storage chamber is provided with an eighteenth channel, one end of the eighteenth channel is communicated with the third cavity, and the other end of the eighteenth channel is communicated with the oil storage chamber;

the eighteenth channel comprises an oil discharge channel c, a tenth channel, an eleventh channel and a fifteenth channel, the oil discharge channel c is arranged on the support, the eleventh channel is arranged on the third cover plate, the eleventh channel is communicated with the oil discharge channel c through the tenth channel, the tenth channel is arranged in the third cover plate, the fifteenth channel is arranged on the second gasket, one end of the fifteenth channel is communicated with the third cavity, and the other end of the fifteenth channel is communicated with the eleventh channel.

In some embodiments, the housing includes a second housing and a first housing, the first housing and the second housing are of an integral structure, the first housing can support the compression unit, and the oil storage chamber is disposed within the first housing.

The utility model also provides a compressor, including foretell compressor oil return structure.

The utility model also provides an air conditioner, including foretell compressor.

The utility model provides a pair of compressor oil return structure, compressor and air conditioner, drive unit with be provided with the oil storage chamber between the compression unit, the oil storage chamber does not receive centrifugal separation structure, also can not taken away by the refrigerant, has guaranteed the utilization ratio in oil storage chamber space, and the gaseous motion energy process of intaking in the first cavity the outer wall in oil storage chamber because the low temperature refrigerant flows through outside the oil storage chamber, and quiet set exhaust high temperature oil-gas mixture obtains high temperature lubricating oil after returning oil chamber separation, and high temperature lubricating oil flows into the oil storage chamber from returning oil chamber after, and the low temperature refrigerant outside the oil storage chamber produces the cooling action to the high temperature lubricating oil in the oil storage intracavity, and the lubricating oil part after the cooling is partly discharged into first cavity, gets into the lubricated position in the compressor under gaseous drive, forms the oil return structure. The oil storage cavity stores the returned high-temperature lubricating oil, and the oil storage cavity is arranged close to the low-temperature region, so that the low-temperature refrigerant cools and cools the high-temperature lubricating oil in the oil storage cavity and then returns to other parts to be lubricated in the compressor. The temperature of the oil lubrication oil is reduced, more heat at the lubrication part is taken away, and the lubrication effect of the lubricating oil can be greatly improved.

Drawings

FIG. 1 is a schematic structural diagram of a first prior art;

FIG. 2 is a schematic structural diagram of a second prior art;

fig. 3 is a schematic structural diagram of an oil return structure of a compressor according to an embodiment of the present invention;

fig. 4 is a partial enlarged view of an oil return structure of the compressor according to the embodiment of the present invention;

fig. 5 is a schematic structural view of a bracket in an oil return structure of a compressor according to an embodiment of the present invention;

fig. 6 is a schematic structural diagram of a first cover plate in an oil return structure of a compressor according to an embodiment of the present invention;

fig. 7 is an assembly projection view of the bracket and the first cover plate in the oil return structure of the compressor according to the embodiment of the present invention;

fig. 8 is a schematic structural view of an oil return structure of a compressor according to another embodiment of the present invention;

fig. 9 is a schematic layout view of a locking member in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 10 is a partially enlarged view of an oil return structure of a compressor according to another embodiment of the present invention;

fig. 11 is a schematic structural view of a throttle member in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 12 is a sectional view of a throttle member in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 13 is a schematic structural view of a buffer chamber in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 14 is a schematic structural view of a second cover plate in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 15 is a schematic structural view of an oil discharge passage c in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 16 is a schematic structural view of a first oil discharge passage of a sealing cover plate in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 17 is an assembly view of a bracket and a third cover plate in an oil return structure of a compressor according to another embodiment of the present invention;

fig. 18 is an assembly view of the first casing and the second casing in the oil return structure of the compressor according to another embodiment of the present invention.

The reference numerals are represented as:

wherein, 1, a cover body (upper cover); 2. a stationary disc; 201. a second channel; 202. a first through hole; 203. a ninth channel; 204. a thirteenth channel; 3. a movable plate; 301. a seventh channel; 4. a support; 401. a fixing member; 402. an oil discharge passage c; 403. a first channel; 404. a fourth channel; 405. a fourteenth channel; 5. a housing; 6. a drive motor; 7. a crankshaft; 701. an eighth channel; 702. a crankshaft orifice; 8. a shell air suction port; 9. a first cavity; 10. an oil storage chamber; 101. an oil discharge passage a; 102. a sixth channel; 103. an oil inlet channel; 104. an oil discharge passage b; 105. a throttling channel c; 1001. an oil inlet buffer cavity a; 1002. an oil collecting cavity; 1003. an oil inlet buffer cavity b; 1004. a pressure maintenance chamber; 1005. a buffer chamber; 11. a second cavity; 12. a third cavity; 13. a compression chamber; 14. an exhaust chamber; 15. an oil return cavity; 151. an oil discharge passage of the oil return cavity; 152. an air inlet channel of the oil return cavity; 16. a compressor discharge port; 17. a first cover plate; 171. a seal fitting portion a; 172. a seal-fitting portion b; 173. an oil discharge groove; 174. a third channel; 18. a first gasket; 181. a communication passage b; 182. a throttling channel a; 19. a bearing a; 20. a bearing b; 21. a throttle member; 211. an outer peripheral oil outlet passage; 212. an internal oil outlet channel; 22. a second cover plate; 221. a communicating hole; 23. a third cover plate; 231. a tenth channel; 232. an eleventh channel; 233. an oil inlet hole; 24. a first housing; 25. a second housing; 26. a locking member; 27. a seal member; 28. an oil outlet hole; 29. a fifth channel; 30. a second gasket; 3001. a fifteenth channel; 3002. and a sixteenth channel.

Detailed Description

Referring to fig. 1, a compressor mechanism in prior art a mainly includes a compressor cover 1, a static disc 2, a movable disc 3, and a bracket 4, an exhaust cavity 14, an oil return cavity 15, and an oil storage cavity 10 are formed between the static disc 2 and the cover 1, the oil storage cavity 10 is relatively disposed below the oil return cavity 15, and a highest oil storage level in the oil storage cavity 10 corresponds to an oil outlet 28 at the bottommost portion of the oil return cavity 15. The oil storage cavity 10 in the prior art is arranged in an exhaust high-temperature area, lubricating oil in the oil storage cavity 10 is at an exhaust high temperature, and high-temperature oil directly enters a lubricating part after throttling, so that the lubricating effect is reduced. Meanwhile, the structural positions of the exhaust cavity 14, the oil return cavity 15 and the oil storage cavity 10 are arranged, so that the cover body 1 needs to be arranged greatly, the compressor is large in size and heavy in weight, and the oil return cavity 15 is limited in axial oil separation length, so that the actual oil separation efficiency is reduced.

Referring to fig. 2, the compressor of the prior art b includes a housing 5, a bracket 4, a movable disk 3, a static disk 2, a cover 1, and a driving motor 6, and lubricating oil separated by the air-exhausting and oil-distributing structure of the cover 1 is returned to two bearings in a second cavity 11 (bearing lubrication cavity) in the bracket 4 by providing oil return channels in the compressor cover 1, the static disk 2, and the bracket 4. The lubricating oil with high exhaust temperature throttles and then directly enters a lubricating part, so that the lubricating effect is reduced. Meanwhile, the second cavity 11 (bearing lubrication cavity) is a moving part accommodating space, the cavity space is limited, and the moving part eccentric sleeve and the moving disc 3 exist, so that the oil storage capacity of the cavity is influenced, separated lubricating oil cannot be completely stored in the compressor, and redundant lubricating oil can still be exhausted to be taken away to enter the system, so that the heat exchange of the system is influenced.

Referring to fig. 3-18 in combination, according to an embodiment of the present invention, there is provided a compressor oil return structure, including: lid 1, casing 5, drive unit and compression unit, lid 1 with casing 5 is connected and forms the cavity, drive unit with the compression unit is located in the cavity, drive unit with be provided with oil storage chamber 10 between the compression unit, compression unit exhaust oil can get into in the oil storage chamber 10, be provided with in the cavity and be used for inspiratory first cavity 9, just, the gas motion that aspirates in the first cavity 9 can pass through the outer wall in oil storage chamber 10, the outer wall in oil storage chamber 10 can produce the heat transfer with the gas in the first cavity 9. Specifically, a first cavity 9 for sucking air is arranged in the shell 5, the air sucked in the first cavity 9 can move through the outer wall of the oil storage cavity 10, and the oil storage cavity 10 can be communicated with the first cavity 9; the oil-gas mixture discharged by the compression unit can be subjected to oil-gas separation in the cover body 1, the separated oil can enter the oil storage cavity 10, and the outer wall of the oil storage cavity 10 can exchange heat with gas in the first cavity 9. At least part of the oil in the oil storage chamber 10 can flow into the first cavity 9, and the gas can drive the oil in the first cavity 9 to move.

Referring to fig. 3, an oil separating structure is arranged in the oil return cavity 15, the cover body 1 and the housing 5 are both hollow structures, the cover body 1 and the housing 5 are connected to form a housing with a hollow cavity structure, a movable disc 3 is arranged between a stationary disc 2 and a support 4, a crankshaft 7 is rotatably connected to the support 4, the crankshaft 7 can drive the movable disc 3 to move, so that the movable disc 3 and the stationary disc 2 are matched to generate a compression effect, a driving motor 6 is arranged on the crankshaft 7, the driving motor 6 can drive the crankshaft 7 to rotate, a housing air suction port 8 is further arranged on the housing 5, the housing air suction port 8 is arranged at an end part far away from the stationary disc 2 and far away from the support 4 and close to the crankshaft 7, the first cavity 9 is arranged at a position close to the housing air suction port 8, a compressor exhaust port 16 is arranged on the cover body 1, the compressor exhaust port 16 is communicated with the oil return cavity 15, an exhaust cavity 14 is arranged above the exhaust port of the stationary disc 2, and is communicated with the oil return cavity 15 through an oil return cavity air inlet channel 152, return oil chamber inlet channel 152 and set up on lid 1, be provided with pump body compression chamber 13 between movable disk 3 and the quiet dish 2, still be provided with third cavity 12 (the pump body chamber of breathing in) between movable disk 3 and the quiet dish 2, refer to the locating position of figure 3. The movable disc 3 and the static disc 2 are arranged on the right side of the driving motor 6, lubricating oil flows from left to right along with a refrigerant (a refrigerant), the refrigerant (the refrigerant) after the motor is cooled reaches the position of the oil storage cavity 10 on the right side of the driving motor 6, the lubricating oil in the oil storage cavity 10 is cooled and finally reaches the third cavity 12, the lubricating oil enters the pump body compression cavity 13 under the action of the third cavity 12 and reaches the exhaust cavity 14 after being compressed, the lubricating oil and the refrigerant are separated in the oil return cavity 15, the separated lubricating oil enters the oil storage cavity 10 from the oil inlet channel 103, the lubricating oil in the oil storage cavity 10 is discharged into the first cavity 9, and the lubricating oil enters a lubricating part inside the compressor under the driving of gas in the first cavity 9, so that the storage and circulation of the lubricating oil inside the compressor are realized. Among this technical scheme, at the drive unit with be provided with oil storage chamber 10 between the compression unit, the gas motion of inhaling in the first cavity 9 can pass through the outer wall of oil storage chamber 10, because low temperature refrigerant flows through outside oil storage chamber 10, the high temperature oil-gas mixture of quiet dish 2 exhaust obtains high temperature lubricating oil after returning oil chamber 15 separation, high temperature lubricating oil flows into oil storage chamber 10 back from returning oil chamber 15, and the low temperature refrigerant outside the oil storage chamber 10 produces the cooling action to the high temperature lubricating oil in the oil storage chamber 10, and first cavity 9 is discharged to some lubricating oil after the cooling, gets into the lubricated position in the compressor under gaseous drive, forms oil return structure. Oil storage chamber 10 stores the high temperature lubricating oil of backward flow to through being close to the regional setting of low temperature, make the low temperature refrigerant cool down the back to the high temperature lubricating oil in oil storage chamber 10, flow back to other inside lubricated positions of waiting of compressor again. The temperature of the oil lubrication oil is reduced, more heat at the lubrication part is taken away, and the lubrication effect of the lubricating oil can be greatly improved.

In a particular embodiment, the drive unit comprises a drive motor 6 and a crankshaft 7; compressor oil return structure still includes support 4, oil storage chamber 10 sets up in support 4, it has second cavity 11 to enclose between support 4 and the bent axle 7, oil storage chamber 10 is located the radial outside of second cavity 11. In the technical scheme, because the low-temperature refrigerant flows through the outside of the support 4, the high-temperature oil-gas mixture discharged from the static disc 2 is separated by the oil return cavity 15 to obtain high-temperature lubricating oil, after the high-temperature lubricating oil flows into the oil storage cavity 10 from the oil return cavity 15, the low-temperature refrigerant outside the support 4 generates a cooling effect on the high-temperature lubricating oil in the oil storage cavity 10, and after being discharged, a part of the cooled lubricating oil is contacted with the low-temperature refrigerant flowing through, is subjected to secondary cooling, and flows along with the low-temperature refrigerant to enter a lubricating part in the compressor, so that the lubricating effect is completed.

In a specific embodiment, an oil return cavity 15 is formed in the cover body 1, the oil storage cavity 10 can be communicated with the oil return cavity 15, and the bracket 4 is located in the first cavity 9; the compression unit includes quiet dish 2 and driving disk 3, quiet dish 2 with be provided with third cavity 12 between the support 4, quiet dish 2 with compression chamber 13 has between the driving disk 3, third cavity 12 with compression chamber 13 is linked together, driving disk 3 can be for gas in the first cavity 9 provides power, so that gas passes through third cavity 12 gets into in the compression chamber 13. According to the technical scheme, the oil return cavity 15 is communicated with the exhaust cavity 14, a low-temperature refrigerant flows through the outside of the support 4, a high-temperature oil-gas mixture discharged from the static disc 2 is separated in the oil return cavity 15 to obtain high-temperature lubricating oil, the high-temperature lubricating oil flows into the oil storage cavity 10 from the oil return cavity 15, the low-temperature refrigerant outside the support 4 cools the high-temperature lubricating oil in the oil storage cavity 10, a part of the cooled lubricating oil is discharged, is in contact with the low-temperature refrigerant flowing through, is subjected to secondary cooling and flows along with the low-temperature refrigerant to enter a lubricating part in a compressor to complete the lubricating action, then is discharged through an exhaust port of the static disc 2 to enter the oil return cavity 15, and then flows into the oil storage cavity 10 after gas-liquid separation is completed in the oil return cavity 15 to form an oil return structure. The oil in the oil return cavity 15 can enter the oil storage cavity 10, and after the first cavity 9 sucks gas, the outer wall of the oil storage cavity 10 can exchange heat with the gas so as to exchange heat with the oil in the oil storage cavity 10.

In a specific embodiment, the oil storage chamber 10 can be communicated with the oil return chamber 15 through an oil inlet passage 103; the oil inlet channel 103 comprises a first channel 403 and a second channel 201, the first channel 403 is arranged on the support 4, the second channel 201 is arranged on the static disc 2, one end of the first channel 403 is communicated with the oil storage cavity 10, the other end of the first channel is communicated with the second channel 201, and the second channel 201 is communicated with the oil return cavity 15. In this technical scheme, oil return cavity 15 has oil return cavity oil extraction passageway 151, and oil return cavity oil extraction passageway 151 is linked together with second passageway 201, and second passageway 201 runs through the setting on quiet dish 2, and oil feed passageway 103 accomplishes lubricating oil and gets into oil storage chamber 10 from oil return cavity 15. The oil inlet channel 103 enables lubricating oil to enter the oil storage cavity from the oil return cavity, and due to the fact that the oil inlet channel 103 is limited in size and the diameter of the oil inlet channel 103 is small in the compressor, liquid can achieve the functions of reducing pressure and throttling through the oil inlet channel 103, and therefore the pressure of the oil storage cavity is smaller than that of the oil return cavity. The oil inlet channel 103 enables lubricating oil to enter the oil storage cavity 10 from the oil return cavity 15, and due to the fact that the size of the oil inlet channel 103 designed in the compressor is limited, the diameter of the oil inlet channel 103 is small, liquid can generate the functions of pressure reduction and throttling through the oil inlet channel 103, and therefore the pressure of the oil storage cavity 10 is smaller than that of the oil return cavity 15.

In a specific embodiment, a first gasket 18 is disposed between the movable disc 3 and the bracket 4, a communication channel b181 is disposed on the first gasket 18, one end of the communication channel b181 is communicated with the second channel 201, and the other end of the communication channel b181 is communicated with the first channel 403, and a throttling structure is disposed in any one or more of the communication channel b181, the second channel 201, and the first channel 403, so that a pressure difference is generated between a pressure in the oil storage chamber 10 and a pressure in the oil return chamber 15. In the technical scheme, the throttling structure can be as follows: any one or more of the communication channel b181, the second channel 201 and the first channel 403 is/are set to be a channel with a limited size and a small diameter, or the throttling structure adopts a throttling piece 21, and the pressure reduction and throttling effect of the oil inlet channel 103 is ensured through the throttling structure.

In a specific embodiment, an oil discharge channel b104 is communicated with the oil storage chamber 10, one end of the oil discharge channel b104 is communicated with the third cavity 12, and the other end is communicated with the oil storage chamber 10; the oil discharge passage b104 includes a fourth passage 404 and a throttling passage a182, the fourth passage 404 is disposed on the bracket 4, the throttling passage a182 is disposed on the first gasket 18, and one end of the throttling passage a182 is communicated with the fourth passage 404, and the other end is communicated with the third cavity 12. The first gasket 18 is used for sealing the second cavity 11, and the communication passage b181 can also ensure the pressure reduction and throttling effect of the oil inlet passage 103. In this technical solution, one end of the oil discharge channel b104 is communicated with the oil storage chamber 10, and the other end is communicated with the third cavity 12. Separately from or together with the oil discharge passage a101 of the first cover plate 17.

In a specific embodiment, the oil discharge passage b104 further includes a throttle passage c105, the throttle passage c105 is disposed on the bracket 4, one end of the throttle passage c105 is communicated with the oil storage chamber 10, and the other end is communicated with the fourth passage 404, a throttle member 21 is disposed in the throttle passage c105, and the throttle member 21 can throttle and depressurize oil in the throttle passage c105, so that a pressure difference is generated between the oil storage chamber 10 and the third cavity 12. In this technical scheme, as shown in fig. 12 and 11, the throttling element 21 is cylindrical, the outer surface of the throttling element is wound with the peripheral oil outlet channel 211, the inner oil outlet channel 212 is arranged in the middle of the throttling element 21, the diameter of the inner oil outlet channel 212 and the diameter of the peripheral oil outlet channel 211 are both small, lubricating oil flowing in the oil discharge channel b104 is divided by the two channels, and then the throttling and pressure reducing effects are further achieved by the effect that the diameter of the peripheral oil outlet channel 211 and the diameter of the inner oil outlet channel 212 are both small. A pressure difference is ensured between the oil reservoir chamber 10 and said third cavity 12. The communication passage b181 and the throttle passage a182 provided in the first gasket 18 as described above may be replaced with such a throttle hole and throttle member as shown in fig. 7, and such a throttle passage has a small flow area and a long flow path, and it is sufficient to design different sizes by reducing the pressure. The utility model discloses not the drawing one by one.

In a specific embodiment, the bracket 4 is provided with an opening towards the side of the driving motor 6, and the opening is communicated with the oil storage chamber 10; the oil return structure of the compressor further comprises a first cover plate 17, wherein the first cover plate 17 is arranged at the opening, so that the oil storage cavity 10 can be sealed through the first cover plate 17. Specifically, an oil discharge channel a101 is arranged on the first cover plate 17, one end of the oil discharge channel a101 is communicated with the oil storage cavity 10, and the other end of the oil discharge channel a101 is communicated with the first cavity 9; the oil discharge channel a101 comprises an oil discharge groove 173 and a third channel 174, the oil discharge groove 173 is arranged on the end face of the first cover plate 17, the third channel 174 is arranged on the side wall of the first cover plate 17, the third channel 174 is communicated with the oil discharge groove 173, and after the first cavity 9 sucks gas, the gas can drive the oil discharged from the oil discharge channel a101 to move. In this technical scheme, have sealed cooperation a171 and sealed cooperation b172 on the first apron 17, correspond the position cooperation through sealed cooperation a171, sealed cooperation b172 on with support 4, accomplish the sealed to oil storage chamber 10, all adopt interference fit between sealed cooperation a171, the sealed cooperation b172 and the support 4. The lubricating oil discharged from the oil storage chamber 10 moves along with the suction of gas into the first cavity 9 to reach a lubricating position, so that the lubricating oil is recycled. The liquid flowing in the oil discharge groove 173 is throttled and depressurized through the third passage 174, so that a pressure difference is formed between the first cavity 9 and the oil storage cavity 10, oil discharge of the oil storage cavity 10 is facilitated, the third passage 174 is arranged on the sealing matching part a171 on the periphery of the first cover plate 17, the third passage 174 is connected with the oil discharge groove 173 and the oil storage cavity 10, and the lubricating oil discharged from the oil storage cavity 10 moves along with the suction of gas into the first cavity 9 to reach a lubricating position, so that the lubricating oil is recycled. The liquid flowing in the oil discharge groove 173 is throttled and depressurized through the third channel 174, so that a pressure difference is formed between the first cavity 9 and the oil storage cavity 10, oil discharge of the oil storage cavity 10 is facilitated, the third channel 174 is arranged on the sealing matching part a171 on the periphery of the first cover plate 17 and is connected with the oil discharge groove 173 and the first cavity 9 (a low-pressure cavity of the motor), lubricating oil in the oil storage cavity 10 enters the first cavity 9 through the oil discharge channel a101 and enters the pump body compression cavity 13 through the third cavity 12 for lubrication, the third channel 174 adopts a channel with a smaller diameter to achieve a throttling effect, and sealing between the oil storage cavity and the low-pressure cavity is achieved through the sealing matching part a171 and the sealing matching part b 172. The fastening and sealing are not limited to the above, and reliable sealing can be achieved at least by using a conventional technique such as a screw, a seal ring, or a gasket.

In a specific embodiment, the first cover plate 17 is connected to the bracket 4 by a locking member 26, and a sealing member 27 is disposed on the locking member 26, wherein the sealing member 27 can seal the first cover plate 17 to the bracket 4. In this embodiment, the locking element 26, preferably a screw, is provided in the circumferential area of the first cover plate 17 with a sealing element 27 in the axial direction and on the front side to form a connection with the holder 4 and to seal the oil chamber 10 from the first cavity 9. Realize sealed form between sealed apron and the support not only including the structure of figure, other sealed modes based on prior art can both realize the utility model discloses a sealed requirement.

In a specific embodiment, the second cavity 11 is in communication with the reservoir chamber 10, such that the pressure in the second cavity 11 is the same as the pressure in the reservoir chamber 10. In this technical scheme, the second cavity 11 with oil storage chamber 10 is linked together, makes the pressure in the second cavity 11 with the pressure in the oil storage chamber 10 is the same, reaches the purpose of steady voltage, specifically, along the axial of bent axle 7, be provided with eighth passageway 701 on the bent axle 7, one end of eighth passageway 701 communicates the second cavity 11, the other end link up bent axle 7 keeps away from the tip of movable disk 3. The end of the crankshaft 7 away from the movable plate 3 is provided with a crankshaft throttle hole 702, and the crankshaft throttle hole 702 is communicated with the eighth passage 701 to realize throttling and pressure reduction of the lubricating oil in the eighth passage 701.

In a specific embodiment, a seventh channel 301 is disposed on the movable plate 3, one end of the seventh channel 301 is communicated with the second cavity 11, and the other end is communicated with the compression cavity 13. A bearing a19 is arranged between the bracket 4 and the crankshaft 7, and a bearing b20 is arranged between the crankshaft 7 and the movable disk 3, in the technical scheme, oil-gas exchange is carried out between the second cavity 11 and the compression cavity 13 through the seventh channel 301, and lubricating oil discharged from the oil storage cavity 10 enters the second cavity 11 through the seventh channel 301 after entering the compression cavity 13, so that the bearing a19 and the bearing b20 are lubricated.

In a specific embodiment, a second cover plate 22 is disposed in the oil storage chamber 10, the second cover plate 22 divides the space of the oil storage chamber 10 into an oil storage chamber and a buffer chamber 1005, a communication hole 221 is disposed in the second cover plate 22, and one end of the communication hole 221 communicates with the oil storage chamber and the other end communicates with the buffer chamber 1005. Specifically, the buffer cavity 1005 is communicated with the second cavity 11 through a sixth passage 102. In this embodiment, the sixth passage 102 allows the pressure in the oil storage chamber 10 to be substantially equal to the pressure in the second cavity 11. However, the utility model discloses can also set up to: the sixth passage 102 is provided with a throttling feature so that the reservoir chamber 10 pressure is higher than the second cavity 11 pressure. So set up, can reduce the throttle pressure drop between oil storage chamber 10 and the oil return chamber 15, the throttle pressure drop on the oil feed passageway can set up a little less, and the lubricating oil in the oil return chamber 15 gets into in the oil storage chamber 10 more fast.

In a specific embodiment, a fifth channel 29 is disposed on the bracket 4, a ninth channel 203 is disposed on the stationary disk 2, a first through hole 202 is further disposed on the stationary disk 2, the first through hole 202 is communicated with the compression cavity 13, one end of the ninth channel 203 is communicated with the first through hole 202, the other end is communicated with the fifth channel 29, and the fifth channel 29 is communicated with the buffer cavity 1005. In this embodiment, the fifth passage 29, the ninth passage 203 and the first through hole 202 maintain the pressure in the reservoir chamber 10 at substantially any pressure between the suction pressure and the discharge pressure. Such a design may allow the pressure in the reservoir chamber 10 to be designed to be different from the pressure in the second cavity 11.

In a specific embodiment, the oil storage device further comprises a fixing member 401, the fixing member 401 is connected and disposed between the inner wall and the outer wall of the support 4, the number of the fixing members 401 is multiple, and the fixing members 401 are arranged at intervals along the circumferential direction of the support 4, so that the oil storage chamber can be divided into a plurality of cavities through the fixing members 401. Specifically, the oil storage chamber is preferably divided into an oil inlet buffer cavity a1001, an oil inlet buffer cavity b1003, an oil collection cavity 1002 and a pressure maintaining cavity 1004 by the fixing piece 401, all the cavities are communicated, the buffer cavity 1005 and the pressure maintaining cavity 1004 are communicated through a communication hole 221, the communication hole 221 is a small hole, gas can easily enter the communication hole 221 due to high gas flowability, and oil is blocked in the pressure maintaining cavity 1004 by more oil, so that oil and gas are divided.

In a specific embodiment, the bracket 4 is provided with an opening towards the side of the movable disc 3, and the opening is communicated with the oil storage cavity 10; the oil return structure of the compressor further comprises a third cover plate 23, wherein the third cover plate 23 is arranged at the opening, so that the oil storage cavity 10 can be sealed through the third cover plate 23. Specifically, a twelfth channel is formed in the oil storage chamber 10, one end of the twelfth channel is communicated with the oil storage chamber 10, and the other end of the twelfth channel is communicated with the oil return chamber 15; the twelfth passage includes a fourteenth passage 405, an oil inlet 233, and a thirteenth passage 204, the fourteenth passage 405 is disposed on the bracket 4, the fourteenth passage 405 is communicated with the oil storage chamber 10, the oil inlet 233 is disposed on the third cover plate 23, the thirteenth passage 204 is disposed on the stationary disc 2, one end of the oil inlet 233 is communicated with the thirteenth passage 204, the other end is communicated with the thirteenth passage 204, and the thirteenth passage 204 is communicated with the oil return chamber 15. A second gasket 30 is arranged between the third cover plate 23 and the movable disc 3, a sixteenth channel 3002 is arranged on the second gasket 30, one end of the sixteenth channel 3002 is communicated with the oil inlet hole 233, and the other end of the sixteenth channel 3002 is communicated with the thirteenth channel 204. An eighteenth channel is arranged on the oil storage cavity 10, one end of the eighteenth channel is communicated with the third cavity 12, and the other end of the eighteenth channel is communicated with the oil storage cavity 10; the eighteenth channel includes an oil discharge channel c402, a tenth channel 231, an eleventh channel 232, and a fifteenth channel 3001, the oil discharge channel c402 is disposed on the bracket 4, the eleventh channel 232 is disposed on the third cover plate 23, the eleventh channel 232 communicates with the oil discharge channel c402 through the tenth channel 231, the tenth channel 231 is disposed in the third cover plate 23, the fifteenth channel 3001 is disposed on the second gasket 30, one end of the fifteenth channel 3001 communicates with the third cavity 12, and the other end communicates with the eleventh channel 232. Among this technical scheme, lie in that oil storage chamber 10 sets up in support 4, the cavity space is opening towards the side of driving disk 3 side, realizes the sealed of oil storage chamber through setting up third apron 23. The third cover plate 23 is disposed between the bracket 4 and the stationary plate 2, and the third cover plate 23 is sealed with the bracket 4 by pressing the stationary plate 2, as shown in fig. 16, an eighteenth channel of the oil reservoir chamber 10 indicated by a solid arrow curve, an oil drain channel c402 is provided in the bracket 4, a tenth channel 231 and an eleventh channel 232 are provided in the third cover plate 23, and a fifteenth channel 3001 is provided in the second gasket 30, thereby forming a flow path communicating the oil reservoir chamber 10 and the third cavity 1. The oil drain passage c402 of the bracket 4 or one of the tenth and eleventh passages 231 and 232 of the third cover plate 23 may be provided with a throttle passage. A twelfth channel of the oil storage chamber 10 shown by a dotted arrow curve, the twelfth channel of the oil storage chamber 10 is the same as the oil inlet channel 103, and a sixteenth channel 3002, an oil inlet hole 233 of the third cover plate 23 and a fourteenth channel 405 of the bracket 4 are arranged on the second gasket 30 connected with the thirteenth channel 204, so as to form oil inlet for connecting the oil return chamber 15 and the oil storage chamber 10. Throttle channels can be arranged on the second gasket 30, the third cover plate 23 or the bracket 4 which are connected with each other, so that the pressure reduction from high exhaust pressure to medium oil storage pressure is realized.

In a specific embodiment, the housing 5 includes a second housing 25 and a first housing 24, the first housing 24 and the second housing 25 are of an integrated structure, the first housing 24 can support the compression unit, and the oil storage chamber 10 is disposed in the first housing 24. Referring to fig. 18, an alternative embodiment of the present invention is shown. Compared with the structure shown in fig. 16, the oil storage cavity is essentially arranged on the shell, and the compressor is not provided with a bracket structure for supporting a movable disk separately. The other features described above can be applied to this type of compressor.

The utility model also provides a compressor, including foretell compressor oil return structure.

The utility model also provides an air conditioner, including foretell compressor.

The utility model relates to a compressor oil return structure, compressor and air conditioner is provided with oil storage chamber 10 between compressor driving disk 3 and support 4, and oil storage chamber 10 is in the compressor low temperature region of breathing in. The oil storage chamber 10 stores the high-temperature lubricating oil with the exhaust separation backflow, and the low-temperature cooling medium cools the high-temperature lubricating oil in the oil storage chamber 10 and then flows back to other parts to be lubricated in the compressor through the arrangement of the low-temperature region. The temperature of the oil lubrication oil is reduced, more heat at the lubrication part is taken away, and the lubrication effect of the lubricating oil can be greatly improved. The oil reservoir 10 is located between the moving plate 3 and the drive motor 6, and this area has a space of a certain axial height and radial dimension due to the structural features thereof, which is not utilized in the prior art. A larger oil storage space can be obtained without increasing the height of the upper cover of the compressor. And compare the oil storage technique that sets up in the upper cover among the prior art, the utility model discloses can reduce the axial dimensions of upper cover effectively, the compressor size is littleer, more is favorable to the lightweight design of system.

The above description is only exemplary of the present invention and should not be taken as limiting the scope of the present invention, as any modifications, equivalents, improvements and the like made within the spirit and principles of the present invention are intended to be included within the scope of the present invention. The foregoing is only a preferred embodiment of the present invention, and it should be noted that, for those skilled in the art, a plurality of modifications and variations can be made without departing from the technical principle of the present invention, and these modifications and variations should also be regarded as the protection scope of the present invention.

Claims (25)

1. The utility model provides a compressor oil return structure which characterized in that: the method comprises the following steps: lid (1), casing (5), drive unit and compression unit, lid (1) with casing (5) are connected and are formed the cavity, drive unit with compression unit is located in the cavity, drive unit with be provided with oil storage chamber (10) between the compression unit, compression unit exhaust oil can get into in oil storage chamber (10), be provided with in the cavity and be used for inspiratory first cavity (9), just, the gas motion that inhales in first cavity (9) can pass through the outer wall in oil storage chamber (10), the outer wall in oil storage chamber (10) can produce the heat transfer with the gas in first cavity (9).

2. The compressor oil return structure according to claim 1, wherein the drive unit includes a drive motor (6) and a crankshaft (7); compressor oil return structure still includes support (4), oil storage chamber (10) set up in support (4), it has second cavity (11) to enclose between support (4) and bent axle (7), oil storage chamber (10) are located the radial outside of second cavity (11).

3. The compressor oil return structure according to claim 2, wherein an oil return chamber (15) is provided in the cover body (1), and the oil storage chamber (10) can communicate with the oil return chamber (15).

4. -compressor oil return structure according to claim 3, characterized in that said bracket (4) is located inside said first cavity (9); the compression unit includes quiet dish (2) and driving disk (3), quiet dish (2) with be provided with third cavity (12) between support (4), quiet dish (2) with compression chamber (13) have between driving disk (3), third cavity (12) with compression chamber (13) are linked together, driving disk (3) can be for gas in first cavity (9) provides power, so that gas passes through third cavity (12) gets into in the compression chamber (13).

5. The compressor oil return structure according to claim 4, wherein the oil storage chamber (10) can communicate with the oil return chamber (15) through an oil inlet passage (103);

the oil inlet channel (103) comprises a first channel (403) and a second channel (201), the first channel (403) is arranged on the support (4), the second channel (201) is arranged on the static disc (2), one end of the first channel (403) is communicated with the oil storage cavity (10) and the other end of the oil storage cavity is communicated with the second channel (201), and the second channel (201) is communicated with the oil return cavity (15).

6. The compressor oil return structure according to claim 5, wherein: the oil return device is characterized in that a first gasket (18) is arranged between the movable disc (3) and the support (4), a communication channel b (181) is arranged on the first gasket (18), one end of the communication channel b (181) is communicated with the second channel (201) and the other end of the communication channel b (403), and a throttling structure is arranged in any one or more of the communication channel b (181), the second channel (201) and the first channel (403) so as to generate pressure difference between the pressure in the oil storage cavity (10) and the pressure in the oil return cavity (15).

7. The compressor oil return structure according to claim 6, wherein: an oil discharge channel b (104) is communicated with the oil storage cavity (10), one end of the oil discharge channel b (104) is communicated with the third cavity (12), and the other end of the oil discharge channel b (104) is communicated with the oil storage cavity (10);

the oil discharge channel b (104) comprises a fourth channel (404) and a throttling channel a (182), the fourth channel (404) is arranged on the support (4), the throttling channel a (182) is arranged on the first gasket (18), one end of the throttling channel a (182) is communicated with the fourth channel (404), and the other end of the throttling channel a is communicated with the third cavity (12).

8. The compressor oil return structure according to claim 7, wherein: oil drain passage b (104) still includes throttle passage c (105), throttle passage c (105) set up on support (4), the one end intercommunication of throttle passage c (105) oil storage chamber (10), other end intercommunication fourth passageway (404), be provided with throttle spare (21) in throttle passage c (105), throttle spare (21) enable oil is in throttle decompression in throttle passage c (105), so that oil storage chamber (10) with third cavity (12) produce pressure differential.

9. The compressor oil return structure according to claim 4, wherein: an opening is formed in one side, facing the driving motor (6), of the support (4), and the opening is communicated with the oil storage cavity (10);

the compressor oil return structure further comprises a first cover plate (17), wherein the first cover plate (17) is arranged at the opening, so that the oil storage cavity (10) can be sealed through the first cover plate (17).

10. The compressor oil return structure according to claim 9, wherein: an oil discharge channel a (101) is arranged on the first cover plate (17), one end of the oil discharge channel a (101) is communicated with the oil storage cavity (10), and the other end of the oil discharge channel a (101) is communicated with the first cavity (9);

the oil discharge channel a (101) comprises an oil discharge groove (173) and a third channel (174), the oil discharge groove (173) is formed in the end face of the first cover plate (17), the third channel (174) is formed in the side wall of the first cover plate (17), the third channel (174) is communicated with the oil discharge groove (173), and after the first cavity (9) sucks gas, the gas can drive oil discharged from the oil discharge channel a (101) to move.

11. The compressor oil return structure according to claim 9, wherein: the first cover plate (17) is connected with the support (4) through a locking piece (26), a sealing piece (27) is arranged on the locking piece (26), and the sealing piece (27) can enable the first cover plate (17) to be sealed with the support (4).

12. Compressor oil return structure according to claim 4, characterized in that the second cavity (11) communicates with the oil reservoir chamber (10) so that the pressure in the second cavity (11) is the same as the pressure in the oil reservoir chamber (10).

13. The compressor oil return structure according to claim 12, wherein an eighth passage (701) is provided on the crankshaft (7) along an axial direction of the crankshaft (7), one end of the eighth passage (701) communicates with the second cavity (11), and the other end of the eighth passage passes through an end of the crankshaft (7) away from the movable plate (3).

14. The compressor oil return structure according to claim 12, wherein a seventh passage (301) is provided on the movable plate (3), one end of the seventh passage (301) communicates with the second cavity (11), and the other end communicates with the compression cavity (13).

15. The compressor oil return structure according to claim 14, wherein a second cover plate (22) is disposed in the oil storage chamber (10), the second cover plate (22) divides the space of the oil storage chamber (10) into an oil storage chamber and a buffer chamber (1005), a communication hole (221) is disposed in the second cover plate (22), and one end of the communication hole (221) is communicated with the oil storage chamber while the other end is communicated with the buffer chamber (1005).

16. The compressor oil return structure according to claim 15, wherein the buffer chamber (1005) communicates with the second cavity (11) through a sixth passage (102).

17. The compressor oil return structure according to claim 15, wherein a fifth passage (29) is provided on the bracket (4), a ninth passage (203) is provided on the static disc (2), a first through hole (202) is further provided on the static disc (2), the first through hole (202) communicates with the compression cavity (13), one end of the ninth passage (203) communicates with the first through hole (202), the other end communicates with the fifth passage (29), and the fifth passage (29) communicates with the buffer cavity (1005).

18. The compressor oil return structure according to claim 15, further comprising a fixing member (401), wherein the fixing member (401) is disposed between an inner wall and an outer wall of the bracket (4) in a connected manner, and the fixing member (401) is plural, and the plural fixing members (401) are arranged at intervals along a circumferential direction of the bracket (4) so that the oil storage chamber can be divided into a plurality of cavities by the fixing member (401).

19. The compressor oil return structure according to claim 4, wherein an opening is provided on a side of the bracket (4) facing the movable disk (3), and the opening is communicated with the oil storage chamber (10);

compressor oil return structure still includes third apron (23), third apron (23) set up the opening part is in order to pass through third apron (23) can seal oil storage chamber (10).

20. The compressor oil return structure according to claim 19, wherein the oil storage chamber (10) is provided with a twelfth channel, one end of the twelfth channel is communicated with the oil storage chamber (10), and the other end of the twelfth channel is communicated with the oil return chamber (15);

the twelfth passageway includes fourteenth passageway (405), inlet port (233) and thirteenth passageway (204), fourteenth passageway (405) sets up on support (4), fourteenth passageway (405) intercommunication oil storage chamber (10), inlet port (233) set up on third apron (23), thirteenth passageway (204) set up on quiet dish (2), the one end intercommunication of inlet port (233) thirteenth passageway (204), the other end intercommunication thirteenth passageway (204), thirteenth passageway (204) intercommunication oil return chamber (15).

21. The compressor oil return structure according to claim 20, wherein a second gasket (30) is disposed between the third cover plate (23) and the movable plate (3), a sixteenth channel (3002) is disposed on the second gasket (30), one end of the sixteenth channel (3002) is communicated with the oil inlet hole (233), and the other end of the sixteenth channel is communicated with the thirteenth channel (204).

22. The compressor oil return structure according to claim 21, wherein the oil storage chamber (10) is provided with an eighteenth channel, one end of the eighteenth channel is communicated with the third cavity (12), and the other end of the eighteenth channel is communicated with the oil storage chamber (10);

the eighteenth channel comprises an oil discharge channel c (402), a tenth channel (231), an eleventh channel (232) and a fifteenth channel (3001), the oil discharge channel c (402) is arranged on the bracket (4), the eleventh channel (232) is arranged on the third cover plate (23), the eleventh channel (232) is communicated with the oil discharge channel c (402) through the tenth channel (231), the tenth channel (231) is arranged in the third cover plate (23), the fifteenth channel (3001) is arranged on the second gasket (30), and one end of the fifteenth channel (3001) is communicated with the third cavity (12) and the other end is communicated with the eleventh channel (232).

23. The compressor oil return structure according to claim 1, wherein the housing (5) includes a second casing (25) and a first casing (24), the first casing (24) and the second casing (25) are of an integrated structure, the first casing (24) can support the compression unit, and the oil storage chamber (10) is disposed in the first casing (24).

24. A compressor, characterized by: comprising the compressor oil return structure of any one of claims 1-23.

25. An air conditioner, characterized in that: comprising the compressor of claim 24.

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