CN114320902A

CN114320902A - Scroll compressor, air conditioning equipment and vehicle

Info

Publication number: CN114320902A
Application number: CN202011066247.5A
Authority: CN
Inventors: 江国彪; 杨开成; 杨江林; 钟升
Original assignee: Guangdong Welling Auto Parts Co Ltd; Anhui Welling Auto Parts Co Ltd
Current assignee: Guangdong Welling Auto Parts Co Ltd; Anhui Welling Auto Parts Co Ltd
Priority date: 2020-09-30
Filing date: 2020-09-30
Publication date: 2022-04-12

Abstract

The application discloses scroll compressor, air conditioning equipment and vehicle. The scroll compressor comprises a support, a crankshaft, a static scroll, a dynamic scroll assembly and an eccentric sleeve, wherein the dynamic scroll assembly comprises a dynamic scroll and a support piece arranged on the dynamic scroll, one end of the eccentric sleeve is connected with the crankshaft, the other end of the eccentric sleeve is connected with the support piece, the scroll compressor comprises a high-pressure side and a low-pressure side, the support is provided with a bearing chamber and a first channel, the eccentric sleeve or the support piece is provided with a first communicating channel communicated with the bearing chamber, the dynamic scroll assembly is provided with an oil cavity, a second communicating channel is arranged between the oil cavity and the low-pressure side or a compression cavity, the frozen oil flowing out from the high-pressure side sequentially passes through the first channel, the bearing chamber, the first communicating channel, the oil cavity and the second communicating channel, and finally reaches the low-pressure side or the compression cavity. So that the oil circuit necessarily passes through the friction pair of the support; the lubricating effect of the friction pair can be enhanced, the friction loss is avoided, and the performance of the scroll compressor is improved.

Description

Scroll compressor, air conditioning equipment and vehicle

Technical Field

The application relates to the field of air conditioning equipment, in particular to a scroll compressor, air conditioning equipment and a vehicle.

Background

The scroll compressor is a positive displacement scroll compressor with high efficiency, low noise and smooth operation, and is widely used in an automotive air conditioning system as a third generation vehicle-mounted scroll compressor. In the use process of the vehicle-mounted scroll compressor, refrigeration oil needs to be provided to lubricate a friction pair in the scroll compressor so as to reduce noise generated when the friction pair works.

In the prior art, an oil separator and an oil storage tank are arranged in a scroll compressor, the oil separator is used for separating mixed fluid of refrigerant discharged from a compression cavity and refrigerant oil, the separated refrigerant oil flows into the oil storage tank, and then returns to an oil storage channel of the scroll compressor from the oil storage tank through a throttling mechanism, and is supplied to a bearing chamber to lubricate a friction pair, so that the refrigerant oil is recycled. Because the scroll compressor refrigeration oil injection volume is little, the refrigeration oil circulation oil mass in the scroll compressor is less promptly for the refrigeration oil is difficult to cover each friction pair, and it is poor to appear local lubricated effect easily, thereby leads to scroll compressor compression efficiency to descend, damages even.

A scroll compressor among the prior art, freezing oil supplies to the main bearing room after throttling and reducing pressure through throttle mechanism, and main bearing room communicates to the side of inhaling with the crankshaft channel, and freezing oil circulation route is vice through the friction of moving the scroll disk bearing, consequently leads to easily moving bearing and relevant part on the whirlpool dish and leads to the friction consumption to increase because of the lubrication is insufficient, leads to the problem such as structural wear even. In the scroll compressor, the degree of lubrication of the friction pair at the orbiting scroll bearing has a large influence on the compression efficiency of the scroll compressor, and therefore the lack of lubrication of the lubricating oil at the orbiting scroll bearing greatly affects the compression efficiency of the scroll compressor.

Disclosure of Invention

An object of this application is to provide a scroll compressor, aim at solving the frozen oil circulation route of current scroll compressor and not pass through the vice friction of moving the scroll bearing, lead to moving the vice friction consumption increase that leads to because of lubricated insufficient of scroll bearing friction, even lead to the problem of structure wearing and tearing technique.

To achieve the purpose, the embodiment of the application adopts the following technical scheme:

the scroll compressor comprises a support, a crankshaft, a fixed scroll, a movable scroll assembly and an eccentric sleeve, wherein the movable scroll assembly comprises a movable scroll and a support piece mounted on the movable scroll, one end of the eccentric sleeve is connected with the crankshaft, the other end of the eccentric sleeve is connected with the support piece, the scroll compressor comprises a high-pressure side and a low-pressure side, the scroll compressor is characterized in that the support is provided with a bearing chamber and a first passage, the eccentric sleeve or the support piece is provided with a first communication passage communicated with the bearing chamber, the movable scroll assembly is provided with an oil chamber, a second communication passage is arranged between the oil chamber and the low-pressure side or the compression chamber, and frozen oil at the high-pressure side flows through the first passage, the bearing chamber, the first communication passage, the oil chamber and the second communication passage.

In one embodiment, the scroll compressor further includes a low pressure housing having the low pressure side, the crankshaft is rotatably installed in the low pressure housing, an eccentric hole is opened at one end of the crankshaft, the scroll compressor further includes a crank pin having one end inserted in the eccentric hole, and the other end of the crank pin is connected to the eccentric sleeve.

In one embodiment, the low pressure housing has a low pressure side; the crankshaft has a second passage communicating with the low pressure side; the crank pin has a third passage communicating the second passage with the oil chamber; the second communicating channel comprises the second channel and the third channel.

In one embodiment, the low pressure housing has a low pressure side; one side end face of the eccentric sleeve is attached to the end face of the crankshaft; the crankshaft is provided with a second passage communicated with the low-pressure side, and the eccentric sleeve is provided with a fourth passage communicated with the second passage and the oil cavity; the second communicating passage includes the second passage and the fourth passage.

In one embodiment, an elastic sealing element is arranged between the eccentric sleeve and the crankshaft, the elastic sealing element is provided with a communication hole for communicating the second channel and the fourth channel, and the second communication channel further comprises the communication hole.

In one embodiment, a first mounting groove is formed in one end, facing the crankshaft, of the eccentric sleeve, the elastic sealing element is arranged in the first mounting groove, and end faces of two opposite ends of the elastic sealing element are respectively attached to the end face of the crankshaft and the groove bottom of the first mounting groove.

In one embodiment, an eccentric hole is formed in one end of the crankshaft, the scroll compressor further comprises a crank pin, one end of the crank pin is inserted into the eccentric hole, the other end of the crank pin penetrates through the eccentric sleeve and extends into the oil cavity, a part of the crank pin, which is located in the oil cavity, is sleeved with an elastic retainer ring, and the elastic retainer ring is abutted to the surface of the eccentric sleeve.

In one embodiment, a second mounting groove is formed in a partial section of the crank pin located in the oil cavity, and the elastic retainer ring is sleeved in the second mounting groove.

In one embodiment, the orbiting scroll has a fifth passage communicating with the first communicating passage; the low pressure housing has a low pressure side, the fifth passage communicates with the low pressure side, and the second communication passage includes the fifth passage.

In one embodiment, the orbiting scroll has a fifth passage communicating with the first communicating passage; the movable scroll and the fixed scroll are encircled to form a compression cavity, the fifth channel is communicated with the compression cavity, and the second communication channel comprises the fifth channel.

In one embodiment, the fixed scroll can intermittently close the outlet of the fifth channel when the movable scroll moves in translation relative to the fixed scroll, so that the fifth channel is intermittently communicated with the compression cavity.

In one embodiment, the support is a first bearing or bushing; an oil return groove is formed in the eccentric sleeve, and a first communication channel is formed by a gap between the inner wall of the oil return groove and the supporting piece.

In one embodiment, the scroll compressor further comprises a bracket connected to the low pressure housing, one end of the crankshaft being rotatably disposed through the bracket; the fixed scroll has a sixth passage communicating with the high pressure side, and the bracket has a first passage communicating the sixth passage with the first communication passage.

In one embodiment, a restriction is provided in the sixth passage.

In one embodiment, the bracket has a bearing chamber communicating the first passage with the first communication passage; a second bearing is arranged in the bearing chamber; the crankshaft is arranged on the second bearing.

In one embodiment, the bracket is provided with a yielding hole, the crankshaft penetrates through the yielding hole, and the crankshaft is provided with a shaft seal which seals a gap between the crankshaft and the inner wall of the yielding hole.

In one embodiment, a third bearing is installed in the low-pressure shell, and one end of the crankshaft, which is far away from the eccentric sleeve, is penetratingly supported on the third bearing.

In one embodiment, the oil and gas separation assembly comprises an oil and gas inner cavity, and the high pressure side comprises the compression cavity and/or the oil and gas inner cavity.

The embodiment of the application provides scroll compressor, compares with prior art, has following beneficial effect at least: in the scroll compressor provided by the embodiment of the application, the refrigeration oil with certain pressure in the high-pressure side flows to the first communication channel formed between the eccentric sleeve and the support member, passes through the first communication channel and flows to the oil cavity formed by the eccentric sleeve and the movable scroll plate in a surrounding mode. So that the oil path of the scroll compressor must pass through the eccentric sleeve and the supporting member. Therefore, the refrigeration oil in the scroll compressor can certainly pass through the friction pair of the supporting piece, the lubricating effect at the friction pair can be enhanced, the friction loss is avoided, and the performance of the scroll compressor is improved.

It is a further object of the present application to provide an air conditioning apparatus including the scroll compressor described in any of the above embodiments.

The air conditioning equipment that this application embodiment provided, through adopting foretell scroll compressor, compare with prior art, have following technological effect at least: in the scroll compressor of the air conditioning equipment, the refrigerant oil inevitably passes through a friction pair of the supporting piece and can be contacted with the eccentric sleeve, the movable scroll and the crankshaft; therefore, when the crank shaft drives the movable scroll disk to rotate, the crank shaft, the eccentric sleeve, the supporting piece and the movable scroll disk are not easy to wear. The service life of the air conditioning equipment is long, and the noise in working is low.

It is a further object of the present application to provide a vehicle including the air conditioning apparatus described in the above embodiments.

The vehicle that this application embodiment provided, through adopting foretell air conditioning equipment, compare with prior art, have following technological effect at least: in the air conditioning equipment in the vehicle, the friction pair at the supporting part in the scroll compressor has enough lubricating oil supply, the noise is low during operation, and the air conditioning equipment of the vehicle is not easy to generate larger noise.

Drawings

In order to more clearly illustrate the technical solutions in the embodiments of the present application, the drawings needed to be used in the embodiments or the prior art descriptions will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present application, and it is obvious for those skilled in the art to obtain other drawings without creative efforts.

FIG. 1 is a cross-sectional view of a scroll compressor in one embodiment of the present application;

FIG. 2 is a partial view of the scroll compressor of FIG. 1;

FIG. 3 is a partial view of the eccentric sleeve of FIG. 2;

FIG. 4 is a partial cross-sectional view at the eccentric sleeve of a scroll compressor in another embodiment of the present application;

FIG. 5 is a partial cross-sectional view at the eccentric bushing of a scroll compressor in yet another embodiment of the present application;

FIG. 6 is a partial cross-sectional view at the eccentric sleeve of a scroll compressor in still another embodiment of the present application;

FIG. 7 is a schematic structural view of an eccentric sleeve in an embodiment of the present application;

in the figure:

1. a low pressure housing; 101. a low pressure side; 102. an air inlet; 103. a first positioning groove;

2. a crankshaft; 201. a second channel;

3. a drive assembly; 301. a motor stator; 302. a motor rotor; 303. an electrical control;

4. a static scroll pan; 401. a sixth channel; 402. a second positioning groove;

5. a movable scroll pan; 501. a fifth channel;

6. an elastomeric seal; 601. a communicating hole;

7. an eccentric sleeve; 701. a fourth channel; 702. a first mounting groove; 703. an oil return groove;

8. an oil-gas separation assembly; 801. a high pressure housing; 802. oil separation; 803. an oil return port; 804. an exhaust port;

9. a crank pin; 901. a third channel; 902. a second mounting groove;

10. an oil chamber; 11. a first communicating passage; 12. a first bearing; 13. a circlip; 14. a compression chamber;

15. a support; 1501. a first channel; 1502. a bearing chamber; 1503. a hole of abdication; 1504. positioning the through hole;

16. a throttle member; 17. shaft sealing; 18. a second bearing; 19. a third bearing; 20. and a positioning pin.

Detailed Description

In order to make the objects, technical solutions and advantages of the present application more apparent, the present application is described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or be indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

The following detailed description of implementations of the present application is provided in conjunction with specific embodiments.

As shown in fig. 1 to 3, the present embodiment provides a scroll compressor including a bracket 15, a low pressure housing 1, a crankshaft 2, a driving assembly 3, a fixed scroll 4, a movable scroll assembly, and an eccentric sleeve 7. The orbiting scroll assembly includes an orbiting scroll 5, and a supporter. The support member is a first bearing 12 or a bushing, and the first bearing 12 and the bushing both support the rotation of the eccentric bushing 7, and the first bearing 12 is described as an example below. The crankshaft 2 is rotatably arranged on the low-pressure shell 1, and the driving assembly 3 can drive the crankshaft 2 to rotate. The fixed scroll disk 4 is arranged on the low-pressure shell 1, the movable scroll disk 5 is adapted to the fixed scroll disk 4, and the movable scroll disk 5 and the fixed scroll disk 4 can enclose to form a compression cavity 14 and compress the refrigeration oil and the refrigerant. The first bearing 12 is arranged on the movable scroll 5, and the eccentric sleeve 7 is arranged on the first bearing 12 and connected with the crankshaft 2. The oil-gas separation assembly 8 is provided in the fixed scroll 4, and can separate the refrigerant oil and the refrigerant compressed and mixed in the movable scroll 5 and the fixed scroll 4. The bracket 15 has a first channel 1501 and a bearing chamber 1502. The scroll compressor has a high pressure side and a low pressure side 101, the eccentric sleeve 7 or the first bearing 12 has a first communication passage 11 communicating with a bearing chamber 1502 of the scroll compressor, the eccentric sleeve 7 and the movable scroll 5 enclose to form an oil chamber 10, and the first communication passage 11 communicates with the oil chamber 10. A second communication passage is provided between the oil chamber 10 and the low pressure side 101 or the compression chamber 14 so that the refrigerant oil inside the oil chamber 10 reaches the low pressure side 101 or the compression chamber 14 through the second communication passage. The high pressure side, the first passage 1502, the bearing chamber 1501, the first communicating passage 11, the oil chamber 10, and the second communicating passage are sequentially communicated, and the refrigerant oil flowing out from the high pressure side sequentially passes through the first passage 1502, the bearing chamber 1501, the first communicating passage 11, the oil chamber 10, and the second communicating passage, and finally reaches the low pressure side 101 or the compression chamber 14.

It is understood that when the second communication passage is provided between the compression chambers 14 of the oil chamber 10, the second communication passage communicates with the intake ends of the compression chambers 14.

Optionally, the high-pressure side of the scroll compressor includes an oil-gas inner cavity (a cavity for separating the refrigerant oil from the refrigerant) of the oil-gas separation assembly 8, and the oil-gas separation assembly 8 has an oil return port 803 communicated with the first communication channel 11. The low pressure housing 1 has the above-mentioned low pressure side.

The working process of the scroll compressor is as follows: the frozen oil and the refrigerant in the low-pressure shell 1 enter a compression cavity 14 formed by enclosing a static scroll disk 4 and a movable scroll disk 5, a driving assembly 3 drives a crankshaft 2 to rotate, the crankshaft 2 drives the movable scroll disk 5 to make revolution and translation through an eccentric sleeve 7 and a first bearing 12, and the frozen oil and the refrigerant in the compression cavity 14 are compressed; the compressed and mixed refrigeration oil and refrigerant enter the oil-gas separation assembly 8 through the gas outlet of the fixed scroll 4. The oil-gas separation assembly 8 separates the mixture of the refrigeration oil and the refrigerant, the separated refrigeration oil leaves the oil-gas separation assembly 8 through an oil return port 803 and flows to a first communication channel 11 formed between the eccentric sleeve 7 and the first bearing 12, the high-pressure side comprises an oil-gas inner cavity of the oil-gas separation assembly 8, and the sufficient pressure can enable the refrigeration oil at the first communication channel 11 to pass through the first communication channel 11 between the eccentric sleeve 7 and the first bearing 12 and move into an oil cavity 10 formed by the eccentric sleeve 7 and the movable scroll 5 (and then reach the low-pressure side 101 or the compression cavity 14 through a second communication channel). Therefore, the refrigeration oil separated and circulated by the oil-gas separation component 8 can pass through the friction pair of the first bearing 12, so that the lubricating effect at the friction pair can be enhanced, the friction loss is avoided, and the performance of the scroll compressor is improved. Meanwhile, the refrigeration oil can also pass through the first communication channel 11 between the eccentric sleeve 7 and the first bearing 12, so as to be in contact with the eccentric sleeve 7, the movable scroll 5 and the crankshaft 2; therefore, when the crank shaft 2 drives the movable scroll 5 to rotate, the crank shaft 2, the eccentric sleeve 7, the first bearing 12 and the movable scroll 5 are not easily worn.

Optionally, the high-pressure side includes a compression cavity 14 formed by the fixed scroll 4 and the movable scroll 5, and the outflow process of the refrigerant oil at the high-pressure side is as follows: the refrigerating oil flows out of the air outlet end of the compression cavity 14, and the refrigerating oil in the compression cavity 14 can directly reach the first communication channel 11 without the action of the oil-gas separation assembly 8.

It will be appreciated that all of the refrigerant oil in the compression chamber 14 may reach the first communication passage 11 without passing through the oil gas separation module 8; the frozen oil part in the compression cavity 14 can also directly reach the first communicating channel 11 without the action of the oil-gas separation assembly 8, and the rest part reaches the first communicating channel 11 after the action of the oil-gas separation assembly 8. Therefore, in the embodiment of the present application, since the compression chamber 14 and the oil-gas inner chamber of the oil-gas separation assembly 8 have sufficient pressures, they can be used as the high-pressure side of the scroll compressor, so that the refrigerant oil can smoothly pass through the first communication channel 11 between the eccentric sleeve 7 and the first bearing 12, and flow to the oil chamber 10 formed by the eccentric sleeve 7 and the orbiting scroll 5 (and then reach the low-pressure side 101 or the compression chamber 14 through the second communication channel). So that the oil path of the scroll compressor necessarily passes through the eccentric sleeve 7 and the first bearing 12.

In the embodiment of the present application, the high-pressure side of the scroll compressor may include any one of the oil-gas inner cavity of the oil-gas separation assembly 8 and the compression cavity 14, or may include both the oil-gas inner cavity of the oil-gas separation assembly 8 and the compression cavity 14.

For example, the refrigerant oil flowing through the first communication passage 11 may flow into the low pressure housing 1 through a passage on the eccentric sleeve 7 or the crankshaft 2, be mixed with the refrigerant again, and then enter the compression chamber 14 formed by the fixed scroll 4 and the orbiting scroll 5 to be compressed.

For example, the refrigerant oil flowing through the first communication passage 11 may flow through a passage on the orbiting scroll 5 into a compression chamber 14 formed by the orbiting scroll 5 and the fixed scroll 4 to be compressed.

As can be understood, the eccentric sleeve 7 or the first bearing 12 has a first communication passage 11: an oil return groove 703 or the like may be formed on the surface of the eccentric sleeve 7 so that a gap is formed between the eccentric sleeve 7 and the first bearing 12, thereby forming the first communication passage 11. When the first bearing 12 is a rolling bearing, the first communication passage 11 may be formed in a gap between an inner race and an outer race of the first bearing 12.

Referring to fig. 2 to 3, as another embodiment of the scroll compressor provided by the present application, the eccentric sleeve 7 and the orbiting scroll 5 are enclosed to form an oil chamber 10, the first communication passage 11 is communicated with the oil chamber 10, and the refrigerant oil passes through the first communication passage 11 and then enters the oil chamber 10. For example, a surface of the eccentric sleeve 7 opposite to the orbiting scroll 5 may be formed with a groove, an inner wall of the groove may form the oil chamber 10 by being enclosed with the surface of the orbiting scroll 5, and the refrigerant oil passing through the first communication passage 11 may be introduced into the oil chamber 10 to flow to the corresponding passage on the eccentric sleeve 7 or the crankshaft 2.

Referring to fig. 1, as another embodiment of the scroll compressor provided in the present application, a low pressure housing 1 has a low pressure side 101, the low pressure side 101 is used for accommodating refrigerant and freezing oil, and the refrigerant and the freezing oil in the low pressure side 101 can enter a compression chamber 14 formed by the fixed scroll 4 and the movable scroll 5 for compression. Be equipped with crank pin 9 between bent axle 2 and the eccentric cover 7, crank pin 9 can fix and locate bent axle 2 on, eccentric cover 7 cover is located on crank pin 9. Referring to fig. 2-3, crankshaft 2 has a second passage 201 communicating with low pressure side 101; the crank pin 9 has a third passage 901 communicating the second passage 201 with the oil chamber 10; that is, the refrigerant oil that passes through the first communicating passage 11 and is introduced into the oil chamber 10 enters the third passage 901 of the crank pin 9 from the oil chamber 10, passes through the second passage 201 on the crankshaft 2 after passing through the third passage 901, and enters the low pressure side 101 in the low pressure housing 1 after passing through the second passage 201. The refrigerant oil introduced into the low-pressure side 101 is introduced into a compression chamber 14 formed by the stationary scroll 4 and the orbiting scroll 5 together with the refrigerant, and compressed. In this embodiment, the second communication channel includes the second channel 201 and the third channel 901.

Referring to fig. 1, as another embodiment of the scroll compressor provided in the present application, a low pressure housing 1 has a low pressure side 101, the low pressure side 101 is used for accommodating refrigerant and freezing oil, and the refrigerant and the freezing oil in the low pressure side 101 can enter a compression chamber 14 formed by the fixed scroll 4 and the movable scroll 5 for compression. Referring to fig. 5, the crankshaft 2 has a second passage 201 communicating with the low pressure side 101; the eccentric sleeve 7 has a fourth passage 701 communicating the second passage 201 with the oil chamber 10. The refrigerant oil that has passed through the first communicating passage 11 and introduced into the oil chamber 10 enters the fourth passage 701 in the eccentric sleeve 7 from the oil chamber 10, passes through the fourth passage 701, enters the second passage 201 in the crankshaft 2, passes through the second passage 201, and enters the low pressure side 101 in the low pressure housing 1. The refrigerant oil introduced into the low-pressure side 101 is introduced into a compression chamber 14 formed by the stationary scroll 4 and the orbiting scroll 5 together with the refrigerant, and compressed. The eccentric sleeve 7 is attached to the end face of the crankshaft 2, so that when the refrigerant oil enters the second passage 201 of the crankshaft 2 from the fourth passage 701 of the eccentric sleeve 7, the refrigerant oil is not easy to leak from between the eccentric sleeve 7 and the end face of the crankshaft 2, and most of the refrigerant oil can enter the second passage 201. In this embodiment, the second communicating channel includes the second channel 201 and the fourth channel 701.

Referring to fig. 4, as another specific embodiment of the scroll compressor provided in the present application, an elastic sealing element 6 is disposed between the eccentric sleeve 7 and the crankshaft 2 (optionally, the elastic sealing element 6 may be abutted against the crankshaft 2 and the eccentric sleeve 7 to achieve installation, and an end of the crankshaft 2 and an end of the eccentric sleeve 7 press the elastic sealing element 6, so as to achieve position fitting of the elastic sealing element 6 in contact with the crankshaft 2 and the eccentric sleeve 7. optionally, the elastic sealing element 6 may also be installed on side surfaces of the crankshaft 2 and the eccentric sleeve 7, so as to achieve that the communication hole 601 on the elastic sealing element 6 communicates with the second channel 201 and the fourth channel 701, and the structure is not particularly limited); the elastic sealing member 6 is opened with a communication hole 601 for communicating the second passage 201 and the fourth passage 701, and the refrigerant oil in the fourth passage 701 of the eccentric sleeve 7 enters the second passage 201 of the crankshaft 2 through the communication hole 601. An elastic sealing element 6 is arranged between the eccentric sleeve 7 and the crankshaft 2, and the elastic sealing element 6 has certain deformation capacity and can be in close contact with the end face of the crankshaft 2 and the surface of the eccentric sleeve 7 simultaneously so as to seal a gap possibly existing between the end face of the crankshaft 2 and the eccentric sleeve 7. Therefore, during the process that the refrigerant oil in the fourth passage 701 enters the communication hole 601, the refrigerant oil is not easily leaked from between the elastic sealing member 6 and the eccentric sleeve 7; during the process in which the refrigerant oil in the communication hole 601 enters the second passage 201, the refrigerant oil is less likely to leak from between the elastic seal 6 and the end surface of the crankshaft 2. In this embodiment, the second communication passage further includes a communication hole 601.

Referring to fig. 4, as another embodiment of the scroll compressor provided in the present application, the eccentric sleeve 7 is provided with a first mounting groove 702; the elastic sealing member 6 is disposed in the first mounting groove 702, and the elastic sealing member 6 is made to be attached to the end surface of the crankshaft 2. Vibration and rotation of parts in the working process of the scroll compressor are not easy to change the position of the elastic sealing element 6, and the elastic sealing element 6 can be stably positioned in the first mounting groove 702 to perform better sealing between the eccentric sleeve 7 and the end surface of the crankshaft 2.

Referring to fig. 4-5, as another specific embodiment of the scroll compressor provided in the present application, a crank pin 9 is disposed between the crankshaft 2 and the eccentric sleeve 7, and the crank pin 9 is movably disposed on the eccentric sleeve 7 (specifically, an eccentric hole may be formed at one end of the crankshaft 2, one end of the crank pin 9 is inserted into the eccentric hole, and the other end of the crank pin 9 passes through the eccentric sleeve 7 and extends into the oil cavity 10). One end of the crank pin 9 far away from the crankshaft 2 is positioned in the oil cavity 10, and the part of the crank pin 9 positioned in the oil cavity 10 is sleeved with an elastic retainer ring 13. The elastic retainer ring 13 is positioned in the oil cavity 10, the surface (part of the inner wall of the oil cavity 10) of one side, far away from the crankshaft 2, of the eccentric sleeve 7 is abutted against the elastic retainer ring 13, therefore, the elastic retainer ring 13 applies certain elastic pressure to the eccentric sleeve 7, the eccentric sleeve 7 always has the trend that the relative crank pin 9 moves towards the direction close to the crankshaft 2, the eccentric sleeve 7 can be stably contacted with the end face of the crankshaft 2, a gap is not easily formed between the end faces of the eccentric sleeve 7 and the crankshaft 2, and the refrigerant oil is not easily leaked.

Optionally, when the elastic sealing element 6 is arranged between the eccentric sleeve 7 and the crankshaft 2, the elastic retainer ring 13 applies a certain elastic pressure to the eccentric sleeve 7, so that the eccentric sleeve 7 always has a tendency of moving towards the direction close to the crankshaft 2 relative to the crank pin 9, the eccentric sleeve 7 can be stably contacted with the elastic sealing element 6, and the end faces of the eccentric sleeve 7 and the crankshaft 2 can be better sealed by combining the elastic deformation capacity of the elastic sealing element 6.

Referring to fig. 5, as another specific embodiment of the scroll compressor provided in the present application, a second mounting groove 902 is formed on the crank pin 9, the elastic collar 13 is disposed in the second mounting groove 902 (the inner wall of the second mounting groove 902 is a part of the inner wall of the oil chamber 10), and the elastic collar 13 is not easily separated from the crank pin 9, so as to continuously and stably apply pressure to the eccentric sleeve 7.

Referring to fig. 6, as another embodiment of the scroll compressor provided in the present application, the orbiting scroll 5 has a fifth passage 501 communicating with the first communication passage 11 (it is understood that the fifth passage 501 may directly communicate with the first communication passage 11, or may communicate with the first communication passage 11 through the oil chamber 10). The low pressure housing 1 has a low pressure side 101, and the fifth passage 501 communicates with the low pressure side 101. The refrigerant oil passing through the first communication passage 11 enters the fifth passage 501 of the orbiting scroll 5, and then enters the low pressure side 101 of the low pressure housing 1 from the outlet of the fifth passage 501. The refrigerant oil introduced into the low-pressure side 101 is introduced into a compression chamber 14 formed by the stationary scroll 4 and the orbiting scroll 5 together with the refrigerant, and compressed. In this embodiment, the second communicating channel includes a fifth channel 501.

Referring to fig. 6, as another embodiment of the scroll compressor provided in the present application, the orbiting scroll 5 has a fifth passage 501 in communication with the first communication passage 11 (it is understood that the fifth passage 501 may be directly in communication with the first communication passage 11, or may be in communication with the first communication passage 11 through the oil chamber 10), the orbiting scroll 5 and the fixed scroll 4 enclose to form a compression chamber 14, and the fifth passage 501 is in communication with the compression chamber 14. The refrigerant oil passing through the first communication passage 11 enters the fifth passage 501 of the orbiting scroll 5, and then enters the compression chamber 14 from the outlet of the fifth passage 501. It can be understood that when the movable scroll 5 moves in a translational manner relative to the fixed scroll 4, the outlet of the fifth channel 501 can be closed by corresponding structures on the fixed scroll 4 along with the change of the position of the movable scroll 5, at this time, the fifth channel 501 is no longer communicated with the compression cavity 14, and the frozen oil can not enter the compression cavity 14, so as to control the amount of the frozen oil entering the compression cavity 14. When the fixed scroll 4 does not close the outlet of the fifth passage 501, the fifth passage 501 is communicated with the compression chamber 14 at this time, and the refrigerant oil may enter the compression chamber 14. When the movable scroll disk 5 moves horizontally relative to the fixed scroll disk 4, the fixed scroll disk 4 intermittently seals the outlet of the fifth channel 501, and the fifth channel 501 is intermittently communicated with the compression cavity 14.

Referring to fig. 7, as another embodiment of the scroll compressor provided in the present application, an oil return groove 703 is formed in the eccentric sleeve 7, and a first communication channel 11 is formed by a gap between an inner wall of the oil return groove 703 and the first bearing 12. The oil return groove 703 can be formed by cutting a certain structure on the side surface of the eccentric sleeve 7, and is easy to process. The depth of the oil returning groove 703 can be adjusted as required so that the refrigerant oil can smoothly pass through the first communicating path 11.

Referring to fig. 1, as another embodiment of the scroll compressor provided in the present application, a bracket 15 is disposed in a low pressure housing 1, and a crankshaft 2 is rotatably disposed on the bracket 15; the fixed scroll 4 is provided with a sixth channel 401 communicated with an oil return port 803, a throttling element 16 is arranged in the sixth channel 401, and the throttling element 16 can reduce the pressure of the refrigerating oil; the bracket 15 has a first channel 1501 that communicates the sixth channel 401 with the first communicating channel 11. The oil-gas separation assembly 8 separates the mixture of the refrigerant and the freezing oil, and the separated freezing oil leaves the oil-gas separation assembly 8 through an oil return port 803 and enters a sixth channel 401 on the fixed scroll 4, and is depressurized by a throttling element 16 in the sixth channel 401. The frozen oil with reduced pressure enters the first channel 1501 after leaving the sixth channel 401, and flows to the first communication channel 11 after leaving the first channel 1501, passes through a friction pair between the first bearing 12 and the eccentric sleeve 7, and can also contact with the movable scroll 5 and the crankshaft 2; therefore, when the crank shaft 2 drives the movable scroll 5 to rotate, the crank shaft 2, the eccentric sleeve 7, the first bearing 12 and the movable scroll 5 are not easily worn.

Referring to FIG. 2, as another embodiment of the scroll compressor provided herein, the bracket 15 has a bearing chamber 1502 communicating the first passageway 1501 with the first communicating passageway 11; the bearing chamber 1502 houses the second bearing 18; the support 15 is provided with a abdicating hole 1503; the crankshaft 2 passes through the relief hole 1503 and is provided on the second bearing 18. Referring to fig. 6, the refrigerant oil leaves the first passage 1501, enters the bearing chamber 1502 of the bracket 15, flows into the first communication passage 11, passes through the first communication passage 11, and reaches the oil chamber 10 or enters the fifth passage 501 of the orbiting scroll 5.

Referring to fig. 2, as another embodiment of the scroll compressor provided in the present application, a shaft seal 17 is installed on the crankshaft 2; the shaft seal 17 closes a gap between the crankshaft 2 and an inner wall of the relief hole 1503. Therefore, the refrigerant oil entering the bearing chamber 1502 of the bracket 15 from the first channel 1501 can flow only to the first communicating channel 11, and is not easily introduced directly into the low pressure side 101 of the low pressure housing 1 from the gap between the crankshaft 2 and the inner wall of the relief hole 1503; so that the refrigerant oil separated and returned from the oil-gas separating assembly 8 must pass through the first communication passage 11 to enter the low pressure side 101 in the low pressure housing 1 or the compression chamber 14 between the orbiting scroll 5 and the fixed scroll 4. Ensuring that all of the returned freezing oil passes through the first communication passage 11 so that a sufficient amount of the freezing oil passes through the friction pair between the first bearing 12 and the eccentric sleeve 7 while a sufficient amount of the freezing oil is in contact with the orbiting scroll 5 and the crankshaft 2; therefore, when the crank shaft 2 drives the movable scroll 5 to rotate, the crank shaft 2, the eccentric sleeve 7, the first bearing 12 and the movable scroll 5 are not easily worn.

Referring to fig. 1, as another embodiment of the scroll compressor provided in the present application, a third bearing 19 is installed in the low pressure housing 1; the end of the crankshaft 2 remote from the eccentric sleeve 7 is arranged on a third bearing 19. The third bearing 19 and the second bearing 18 can support the crankshaft 2 at two different positions, and the crankshaft 2 can rotate more stably.

Referring to fig. 1, as another embodiment of the scroll compressor provided in the present application, a first positioning groove 103 is formed in a low pressure housing 1, a second positioning groove 402 is formed in a fixed scroll 4, and a positioning through hole 1504 is formed in a bracket 15. The scroll compressor further includes a locating pin 20 extending through the locating through-hole 1504; one end of the positioning pin 20 is inserted into the first positioning groove 103, and the other end of the positioning pin 20 is inserted into the second positioning groove 402. The low-pressure shell 1, the bracket 15 and the fixed scroll disk 4 are connected in a positioning way through the positioning pin 20, and the relative positions are stable.

Referring to fig. 1, as another specific embodiment of the scroll compressor provided in the present application, the driving assembly 3 includes a motor stator 301 disposed in the low pressure housing 1, a motor rotor 302 disposed in the motor stator 301, and an electric control unit 303 electrically connected to the motor stator 301 and the motor rotor 302; the crankshaft 2 is provided to the motor rotor 302. The electric control 303 controls the operation of the motor stator 301 and the motor rotor 302, so as to drive the crankshaft 2 to rotate. Optionally, the electronic control 303 may also control the operation of other components of the scroll compressor.

Referring to fig. 2, as another embodiment of the scroll compressor provided in the present application, the oil-gas separation assembly 8 includes a high-pressure housing 801 disposed on the fixed scroll 4, and an oil distribution pipe 802 disposed in the high-pressure housing 801; the high-pressure shell 801 is provided with an air outlet 804; the oil return port 803 opens in the high-pressure housing 801. The mixture of the refrigeration oil and the refrigerant in the high-pressure housing 801 is centrifugally separated by an oil separation pipe 802, and the refrigerant is discharged through an exhaust port 804, flows to an air inlet 102 in the low-pressure housing 1 through a pipeline, and enters the low-pressure side 101; the refrigerant oil flows out from the oil return port 803 and flows toward the first communication passage 11.

The embodiment of the application also provides air conditioning equipment, which comprises the scroll compressor in any one of the embodiments. In a scroll compressor of the air conditioning equipment, the refrigeration oil which is separated by the oil-gas separation component 8 and circulates in a backflow mode can pass through a friction pair of the first bearing 12 and can be in contact with the eccentric sleeve 7, the movable scroll 5 and the crankshaft 2; therefore, when the crank shaft 2 drives the movable scroll 5 to rotate, the crank shaft 2, the eccentric sleeve 7, the first bearing 12 and the movable scroll 5 are not easily worn. The service life of the air conditioning equipment is long, and the noise in working is low.

The embodiment of the application also provides a vehicle which comprises the air conditioning equipment in the embodiment. The scroll compressor is used as a component of the vehicle-mounted air conditioner, and the vehicle also comprises other necessary components forming the vehicle-mounted air conditioner in the prior art.

In the present application, the specific type of the vehicle is not limited, for example, the vehicle may be a conventional fuel vehicle, and may also be a new energy vehicle, which includes, but is not limited to, a pure electric vehicle, an extended range electric vehicle, a hybrid electric vehicle, a fuel cell electric vehicle, a hydrogen engine vehicle, and the like, and the present embodiment is not limited thereto.

It should be understood that the above examples are merely examples for clearly illustrating the present application, and are not intended to limit the embodiments of the present application. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present application shall be included in the protection scope of the claims of the present application.

Claims

1. The scroll compressor comprises a support, a crankshaft, a fixed scroll, a movable scroll assembly and an eccentric sleeve, wherein the movable scroll assembly comprises a movable scroll and a support piece mounted on the movable scroll, one end of the eccentric sleeve is connected with the crankshaft, the other end of the eccentric sleeve is connected with the support piece, the scroll compressor comprises a high-pressure side and a low-pressure side, the scroll compressor is characterized in that the support is provided with a bearing chamber and a first passage, the eccentric sleeve or the support piece is provided with a first communication passage communicated with the bearing chamber, the movable scroll assembly is provided with an oil chamber, a second communication passage is arranged between the oil chamber and the low-pressure side or the compression chamber, and frozen oil at the high-pressure side flows through the first passage, the bearing chamber, the first communication passage, the oil chamber and the second communication passage.

2. The scroll compressor of claim 1, wherein an eccentric hole is formed at one end of the crankshaft, the scroll compressor further comprising a crank pin having one end inserted into the eccentric hole, and the other end of the crank pin is connected to the eccentric sleeve.

3. The scroll compressor of claim 2, wherein the crankshaft has a second passage in communication with the low pressure side; the crank pin has a third passage communicating the second passage with the oil chamber; the second communicating channel comprises the second channel and the third channel.

4. The scroll compressor of claim 2, wherein an end surface of one side of the eccentric sleeve abuts an end surface of the crankshaft; the crankshaft is provided with a second passage communicated with the low-pressure side, and the eccentric sleeve is provided with a fourth passage communicated with the second passage and the oil cavity; the second communicating passage includes the second passage and the fourth passage.

5. The scroll compressor of claim 4, wherein an elastic seal is disposed between the eccentric sleeve and the crankshaft, the elastic seal defines a communication hole for communicating the second channel with the fourth channel, and the second communication channel further includes the communication hole.

6. The scroll compressor of claim 5, wherein a first mounting groove is formed in one end of the eccentric sleeve facing the crankshaft, the elastic sealing element is disposed in the first mounting groove, and end surfaces of two opposite ends of the elastic sealing element are respectively attached to an end surface of the crankshaft and a groove bottom of the first mounting groove.

7. The scroll compressor of claim 4, wherein an eccentric hole is formed at one end of the crankshaft, the scroll compressor further comprises a crank pin, one end of the crank pin is inserted into the eccentric hole, the other end of the crank pin penetrates through the eccentric sleeve and extends into the oil cavity, and a part of the crank pin, which is located in the oil cavity, is sleeved with an elastic check ring, and the elastic check ring abuts against the surface of the eccentric sleeve.

8. The scroll compressor of claim 7, wherein a second mounting groove is formed in a portion of the crank pin located in the oil chamber, and the circlip is sleeved in the second mounting groove.

9. The scroll compressor of claim 2, wherein the orbiting scroll has a fifth passage communicating with the first communication passage; the fifth passage communicates with the low pressure side, and the second communication passage includes the fifth passage.

10. The scroll compressor of claim 1, wherein the orbiting scroll has a fifth passage in communication with the first communication passage, the fifth passage being in communication with the compression chamber, the second communication passage including the fifth passage.

11. The scroll compressor of claim 10, wherein the fixed scroll is adapted to intermittently close the outlet of the fifth passage to provide intermittent communication of the fifth passage with the compression chamber as the orbiting scroll translates relative to the fixed scroll.

12. The scroll compressor of any one of claims 1-11, wherein the support member is a first bearing or bushing; an oil return groove is formed in the eccentric sleeve, and a first communication channel is formed by a gap between the inner wall of the oil return groove and the supporting piece.

13. The scroll compressor of any one of claims 2-11, wherein one end of the crankshaft is rotatably disposed through the bracket; the fixed scroll has a sixth passage communicating with the high pressure side, the sixth passage communicating with the first passage.

14. The scroll compressor of claim 13, wherein a restriction is provided in the sixth passage.

15. The scroll compressor of claim 13, wherein a second bearing is disposed within the bearing chamber; the crankshaft is arranged on the second bearing.

16. The scroll compressor of claim 15, wherein the bracket is provided with a relief hole, the crankshaft penetrates through the relief hole, and the crankshaft is provided with a shaft seal which seals a gap between the crankshaft and an inner wall of the relief hole.

17. The scroll compressor of claim 15, further comprising a third bearing on which an end of the crankshaft remote from the eccentric sleeve is supported through.

18. The scroll compressor of claim 10, further comprising an oil-gas separation assembly, the oil-gas separation assembly comprising an oil-gas inner cavity; the high pressure side includes the compression chamber and/or the oil and gas inner chamber.

19. Air conditioning apparatus, comprising a scroll compressor as claimed in any one of claims 1 to 18.

20. Vehicle, characterized in that it comprises an air conditioning apparatus according to claim 19.