CN114320902A - Scroll compressor, air conditioning equipment and vehicle - Google Patents

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 compressors, air conditioning equipment and vehicles

technical field

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

Background technique

The scroll compressor is a positive displacement scroll compressor with high efficiency, low noise and stable operation. As the third generation of vehicle scroll compressors, it is widely used in automotive air conditioning systems. In recent years, with the development of new energy vehicles With the development of automobiles, the requirements for noise, vibration and durability of air-conditioning scroll compressors have been further improved. Among them, during the use of the on-board scroll compressor, it is necessary to provide refrigeration oil to lubricate the friction pair in the scroll compressor, so as to reduce the noise generated when the friction pair works.

In the prior art, an oil separator and an oil storage tank are arranged in the scroll compressor. The oil separator is used to separate the mixed fluid of the refrigerant and the refrigerating oil discharged from the compression chamber, and the separated refrigerating oil flows into the oil storage tank, and then flows from the oil storage tank. The oil storage pool returns to the oil storage channel of the scroll compressor through the throttling mechanism, and supplies it to the bearing chamber to lubricate the friction pair, thereby realizing the recycling of the refrigeration oil. Due to the small amount of oil injection of the scroll compressor refrigeration oil, that is, the amount of circulating oil in the scroll compressor is small, so that it is difficult for the refrigeration oil to cover each friction pair, and the local lubrication effect is likely to be poor, resulting in scroll The compression efficiency of the compressor is reduced or even damaged.

In a scroll compressor in the prior art, the refrigerating oil is throttled and depressurized by a throttling mechanism and then supplied to the main bearing chamber, the main bearing chamber and the crankshaft passage are connected to the suction side, and the circulating path of the refrigerating oil does not pass through the movable scroll. The friction pair of the bearing is easy to cause the bearing and related components on the movable scroll to increase frictional power consumption due to insufficient lubrication, and even lead to structural wear and other problems. In the scroll compressor, the lubrication degree of the friction pair at the movable scroll bearing has a great influence on the compression efficiency of the scroll compressor. Therefore, the lack of lubricating oil at the movable scroll bearing greatly affects the scroll compressor. Compression efficiency of the compressor.

SUMMARY OF THE INVENTION

An object of the present application is to provide a scroll compressor, which aims to solve the problem that the friction pair of the movable scroll bearing does not pass through the refrigerating oil circulation path of the existing scroll compressor, resulting in insufficient lubrication of the friction pair of the movable scroll bearing. This results in increased frictional power consumption and even problems with structural wear technology.

For this purpose, the embodiment of the present application adopts the following technical solutions:

A scroll compressor includes a bracket, a crankshaft, a stationary scroll, a movable scroll assembly and an eccentric sleeve, the movable scroll assembly includes a movable scroll and a support member installed on the movable scroll, one end of the eccentric sleeve is is connected to the crankshaft, the other end of the eccentric sleeve is connected to the support member, the scroll compressor includes a high pressure side and a low pressure side, and is characterized in that the support has a bearing chamber and a first passage, the The eccentric sleeve or the support member has a first communication channel that communicates with the bearing chamber, the movable scroll assembly has an oil cavity, and a first communication channel is provided between the oil cavity and the low pressure side or the compression cavity. Two communication channels, the refrigerant oil at the high pressure side flows through the first channel, the bearing chamber, the first communication channel, the oil cavity and the second communication channel.

In one embodiment, the scroll compressor further includes a low pressure casing having the low pressure side, the crankshaft is rotatably installed in the low pressure casing, an eccentric hole is opened at one end of the crankshaft, and the scroll The compressor further includes a crank pin, one end of which is inserted into 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 with the second passage and the oil chamber channel; the second communication channel includes the second channel and the third channel.

In one embodiment, the low-pressure housing has a low-pressure side; one end face of the eccentric sleeve is in contact with an end face of the crankshaft; the crankshaft has a second passage communicating with the low-pressure side, the The eccentric sleeve has a fourth channel connecting the second channel and the oil cavity; the second communication channel includes the second channel and the fourth channel.

In one embodiment, an elastic sealing member is provided between the eccentric sleeve and the crankshaft, the elastic sealing member is provided with a communication hole connecting the second passage and the fourth passage, and the second communication The channel also includes the communication hole.

In one embodiment, one end of the eccentric sleeve facing the crankshaft is provided with a first installation groove, the elastic sealing member is arranged in the first installation groove, and two opposite sides of the elastic member sealing member are provided with a first installation groove. The end faces of the ends are respectively fitted with the end face of the crankshaft and the groove bottom of the first installation groove.

In one embodiment, an eccentric hole is formed at one end of the crankshaft, the scroll compressor further includes a crank pin whose one end is inserted into the eccentric hole, and the other end of the crank pin passes through the eccentric sleeve and extends into the oil cavity, and a part of the crank pin located in the oil cavity is sleeved with an elastic retaining ring, and the elastic retaining ring is in contact with the surface of the eccentric sleeve.

In one embodiment, a portion of the crank pin located in the oil cavity is provided with a second installation groove, and the elastic retaining ring is sleeved in the second installation groove.

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

In one embodiment, the movable scroll has a fifth channel that communicates with the first communication channel; the movable scroll and the fixed scroll enclose a compression cavity to form a compression cavity, and the fifth channel communicates with the first communication channel. The compression chambers communicate with each other, and the second communication channel includes the fifth channel.

In one embodiment, when the movable scroll moves relative to the stationary scroll, the stationary scroll can intermittently close the outlet of the fifth passage, so as to realize the connection between the fifth passage and the stationary scroll. The compression chambers communicate intermittently.

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

In one embodiment, the scroll compressor further includes a bracket connected to the low-pressure casing, and one end of the crankshaft is rotatably passed through the bracket; the stationary scroll has a connection with the high-pressure side The sixth channel communicates with each other, and the bracket has a first channel that communicates the sixth channel and the first communication channel.

In one embodiment, a throttle is provided in the sixth channel.

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

In one embodiment, an escape hole is formed on the bracket, the crankshaft passes through the escape hole, and a shaft seal is provided on the crankshaft, and the shaft seal closes the gap between the crankshaft and the escape hole. the gap between the inner walls.

In one embodiment, a third bearing is installed in the low pressure housing, and one end of the crankshaft away from the eccentric sleeve is passed through and supported on the third bearing.

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

The embodiment of the present application provides a scroll compressor, which at least has the following beneficial effects compared with the prior art: in the scroll compressor provided by the embodiment of the present application, the refrigeration oil with a certain pressure in the high-pressure side flows toward the eccentric sleeve and the The first communication channel formed between the supports passes through the first communication channel and flows into the oil cavity formed by the eccentric sleeve and the movable scroll. The oil path of the scroll compressor must pass through the eccentric sleeve and the support. Therefore, the refrigeration oil in the scroll compressor must be able to pass through the friction pair of the support member, which can strengthen the lubrication effect at the friction pair, avoid friction loss, and improve the performance of the scroll compressor.

Another object of the present application is to provide an air conditioner, including the scroll compressor described in any one of the above embodiments.

Compared with the prior art, the air-conditioning equipment provided by the embodiments of the present application has at least the following technical effects by using the above-mentioned scroll compressor: in the scroll compressor of the air-conditioning equipment, the refrigerating oil must pass through the friction pair of the support member. At the same time, it can also contact with the eccentric sleeve, the movable scroll and the crankshaft; therefore, when the crankshaft drives the movable scroll to rotate, the crankshaft, the eccentric sleeve, the support and the movable scroll are not easy to wear. Air conditioning equipment has a long service life and operates with low noise.

Yet another object of the present application is to provide a vehicle including the air conditioner described in the above embodiments.

Compared with the prior art, the vehicle provided by the embodiments of the present application has at least the following technical effects by using the above-mentioned air conditioner: the air conditioner in the vehicle and the friction pair at the support in the scroll compressor have sufficient lubrication Oil supply, low noise during operation, and it is not easy to generate large noise at the air conditioning equipment of the vehicle.

Description of drawings

In order to illustrate the technical solutions in the embodiments of the present application more clearly, the following briefly introduces the accompanying drawings that need to be used in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only for the present application. In some embodiments, for those of ordinary skill in the art, other drawings can also be obtained according to these drawings without any creative effort.

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

Figure 2 is a partial view of the scroll compressor in Figure 1;

Figure 3 is a partial view of the eccentric sleeve in Figure 2;

4 is a partial cross-sectional view of an eccentric sleeve of a scroll compressor in another embodiment of the application;

5 is a partial cross-sectional view of the eccentric sleeve of the scroll compressor in still another embodiment of the application;

6 is a partial cross-sectional view of an eccentric sleeve of a scroll compressor in yet another embodiment of the application;

7 is a schematic structural diagram of an eccentric sleeve in an embodiment of the application;

In the picture:

1. Low pressure housing; 101, low pressure side; 102, air inlet; 103, first positioning groove;

2. Crankshaft; 201. Second channel;

3. Drive components; 301, motor stator; 302, motor rotor; 303, electrical controls;

4. Static scroll; 401, the sixth channel; 402, the second positioning groove;

5. Moving scroll; 501. Fifth channel;

6. Elastic seal; 601. Connecting hole;

7. Eccentric sleeve; 701, fourth channel; 702, first installation groove; 703, oil return groove;

8. Oil and gas separation components; 801, high pressure shell; 802, oil branch pipe; 803, oil return port; 804, exhaust port;

9. Crank pin; 901, the third channel; 902, the second installation groove;

10. Oil chamber; 11. First communication channel; 12. First bearing; 13. Retaining ring; 14. Compression chamber;

15. Bracket; 1501, First channel; 1502, Bearing chamber; 1503, Allowance hole; 1504, Positioning through hole;

16, throttle; 17, shaft seal; 18, second bearing; 19, third bearing; 20, locating pin.

Detailed ways

In order to make the purpose, technical solutions and advantages of the present application more clearly understood, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly on the other element or 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 indirectly connected to the other element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

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

The implementation of the present application will be described in detail below with reference to specific embodiments.

As shown in FIGS. 1-3 , an embodiment of the present application proposes a scroll compressor, including a bracket 15 , a low-pressure casing 1 , a crankshaft 2 , a drive assembly 3 , a stationary scroll 4 , a movable scroll assembly, and an eccentric Set of 7. The movable scroll assembly includes the movable scroll 5, and a support. The support member is the first bearing 12 or the shaft sleeve. Both the first bearing 12 and the shaft sleeve support the rotation of the eccentric sleeve 7 . The first bearing 12 is used as an example for description below. The crankshaft 2 is rotatably arranged on the low pressure housing 1 , and the drive assembly 3 can drive the crankshaft 2 to rotate. The stationary scroll 4 is arranged on the low-pressure casing 1 , the movable scroll 5 is adapted to the stationary scroll 4 , and the movable scroll 5 and the stationary scroll 4 can enclose a compression chamber 14 and compress the refrigeration oil and 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 unit 8 is provided on the stationary scroll 4 and can separate the refrigerating oil and refrigerant compressed and mixed by the movable scroll 5 and the stationary 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 channel 11 that communicates with the bearing chamber 1502 of the scroll compressor, and the eccentric sleeve 7 and the movable scroll 5 are enclosed to form There is an oil cavity 10 , and the first communication channel 11 communicates with the oil cavity 10 . A second communication channel is provided between the oil chamber 10 and the low pressure side 101 or the compression chamber 14 , so that the refrigeration oil in the oil chamber 10 reaches the low pressure side 101 or the compression chamber 14 through the second communication channel. The high pressure side, the first passage 1502, the bearing chamber 1501, the first communication passage 11, the oil chamber 10 and the second communication passage are connected in sequence, and the refrigeration oil flowing out from the high pressure side passes through the first passage 1502, the bearing chamber 1501, and the first communication in sequence. The passage 11 , the oil chamber 10 and the second communication passage finally reach the low pressure side 101 or the compression chamber 14 .

It can be understood that, when a second communication channel is provided between the compression chambers 14 of the oil chamber 10 , the second communication channel is communicated with the intake end of the compression chamber 14 .

Optionally, the high-pressure side of the scroll compressor includes an oil-gas inner cavity (a cavity for separating refrigeration oil and refrigerant) of the oil-gas separation component 8, and the oil-gas separation component 8 has a return channel that communicates with the first communication channel 11. Port 803. The low-pressure casing 1 has the above-described low-pressure side.

The working process of the scroll compressor is as follows: the refrigerated oil and refrigerant in the low-pressure shell 1 enter the compression chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5, and the drive assembly 3 drives the crankshaft 2 to rotate, and the crankshaft 2 The eccentric sleeve 7 and the first bearing 12 drive the movable scroll 5 to revolve and translate to compress the refrigerating oil and refrigerant in the compression chamber 14; the compressed and mixed refrigerating oil and refrigerant pass through the air outlet of the stationary scroll 4 Enter into the oil and gas separation assembly 8. The oil-air separation assembly 8 separates the mixture of the refrigerant oil and the refrigerant, and the separated refrigerant oil leaves the oil-air separation assembly 8 through the oil return port 803, and flows to the first communication channel 11 formed between the eccentric sleeve 7 and the first bearing 12, The high pressure side includes the oil and gas inner cavity of the oil and gas separation assembly 8, and sufficient pressure can make the refrigeration oil at the first communication channel 11 pass through the first communication channel 11 between the eccentric sleeve 7 and the first bearing 12, and move to the eccentric sleeve. 7 into the oil chamber 10 enclosed with the movable scroll 5 (and then reaches the low pressure side 101 or the compression chamber 14 through the second communication passage). Therefore, the refrigerating oil separated and circulated by the oil and gas separation component 8 can pass through the friction pair of the first bearing 12, which can strengthen the lubrication effect at the friction pair, avoid friction loss, and improve the performance of the scroll compressor. At the same time, the refrigerated oil can also pass through the first communication channel 11 between the eccentric sleeve 7 and the first bearing 12, and then achieve contact with the eccentric sleeve 7, the movable scroll 5 and the crankshaft 2; therefore, the crankshaft 2 drives the movable scroll 5. During rotation, the crankshaft 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 chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5, and the refrigerant oil outflow process on the high pressure side is as follows: the outlet end of the compression chamber 14 flows out the refrigerant oil, and the refrigerant oil in the compression chamber 14 flows out. It can directly reach the first communication channel 11 without going through the action of the oil-gas separation assembly 8 .

It can be understood that the refrigeration oil in the compression chamber 14 can directly reach the first communication channel 11 without the action of the oil and gas separation assembly 8; It directly reaches the first communication channel 11 , and the remaining parts reach the first communication channel 11 after being acted by the oil and 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 pressure, they can be used as the high-pressure side of the scroll compressor, so that the refrigeration oil can smoothly pass through the eccentric sleeve 7 The first communication channel 11 with the first bearing 12 flows to the eccentric sleeve 7 and the movable scroll 5 to form an oil chamber 10 (and then reaches the low pressure side 101 or the compression chamber 14 through the second communication channel). The oil path of the scroll compressor must pass 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 and gas inner cavity and the compression cavity 14 of the oil and gas separation assembly 8 , or may include both the oil and gas inner cavity and the compression cavity 14 of the oil and gas separation assembly 8 .

Exemplarily, the refrigeration oil flowing through the first communication channel 11 can flow into the low-pressure casing 1 through the channels on the eccentric sleeve 7 or the crankshaft 2 and other components, and mix with the refrigerant again, and then enter the stationary scroll 4 and the movable scroll. 5. Compression is performed in the compression chamber 14 formed by the enclosure.

For example, the refrigeration oil flowing through the first communication channel 11 may also flow into the compression chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5 through the channel on the movable scroll 5 for compression.

It can be understood that the first communication channel 11 of the eccentric sleeve 7 or the first bearing 12 can be a similar structure such as an oil return groove 703 on the surface of the eccentric sleeve 7, so that there is a gap between the eccentric sleeve 7 and the first bearing 12, Further, the above-mentioned first communication channel 11 is formed. When the first bearing 12 is a rolling bearing, it can also be the gap between the inner and outer rings of the first bearing 12 to form the above-mentioned first communication channel 11 .

Please refer to FIGS. 2 to 3 , as another specific embodiment of the scroll compressor provided by the present application, the eccentric sleeve 7 and the movable scroll 5 are enclosed to form an oil cavity 10 , and the first communication channel 11 communicates with the oil cavity 10 , the refrigeration oil enters the oil cavity 10 after passing through the first communication channel 11 . For example, a groove may be formed on the surface of the eccentric sleeve 7 opposite to the movable scroll 5, and the inner wall of the groove and the surface of the movable scroll 5 enclose the above-mentioned oil cavity 10, and the refrigerated oil after passing through the first communication channel 11 The oil chamber 10 is introduced to flow to the eccentric sleeve 7 or the corresponding passage on the crankshaft 2 .

Please refer to FIG. 1 , as another specific embodiment of the scroll compressor provided in the present application, the low-pressure casing 1 has a low-pressure side 101 , the low-pressure side 101 is used for accommodating refrigerant and refrigeration oil, and the refrigerant in the low-pressure side 101 And the refrigeration oil can enter the compression chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5 for compression. A crank pin 9 is arranged between the crankshaft 2 and the eccentric sleeve 7 , the crank pin 9 can be fixedly arranged on the crankshaft 2 , and the eccentric sleeve 7 is sleeved on the crank pin 9 . 2-3, the crankshaft 2 has a second channel 201 that communicates with the low pressure side 101; the crank pin 9 has a third channel 901 that communicates the second channel 201 and the oil chamber 10; The refrigerated oil introduced into the oil chamber 10 enters the third channel 901 of the crankpin 9 from the oil chamber 10, the refrigerated oil flows through the third channel 901 and then the second channel 201 on the crankshaft 2, and the refrigerated oil flows through the second channel 201 Then enter the low pressure side 101 in the low pressure casing 1 . The refrigeration oil entering into the low pressure side 101 and the refrigerant enter into the compression chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5 for compression. In this embodiment, the second communication channel includes a second channel 201 and a third channel 901 .

Please refer to FIG. 1 , as another specific embodiment of the scroll compressor provided in the present application, the low-pressure casing 1 has a low-pressure side 101 , the low-pressure side 101 is used for accommodating refrigerant and refrigeration oil, and the refrigerant in the low-pressure side 101 And the refrigeration oil can enter the compression chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5 for compression. Referring to FIG. 5 , the crankshaft 2 has a second passage 201 that communicates with the low pressure side 101 ; the eccentric sleeve 7 has a fourth passage 701 that communicates the second passage 201 and the oil chamber 10 . The refrigerated oil passed through the first communication channel 11 and introduced into the oil chamber 10 enters the fourth channel 701 on the eccentric sleeve 7 from the oil chamber 10. After the refrigerated oil flows through the fourth channel 701, it enters the second channel 201 on the crankshaft 2, The refrigerant oil flows through the second passage 201 and then enters the low pressure side 101 in the low pressure casing 1 . The refrigeration oil entering into the low pressure side 101 and the refrigerant enter into the compression chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5 for compression. The eccentric sleeve 7 is in contact with the end face of the crankshaft 2, so when the refrigerant oil enters the second passage 201 on the crankshaft 2 from the fourth passage 701 on the eccentric sleeve 7, the refrigerant oil is not easy to pass from the eccentric sleeve 7 and the end face of the crankshaft 2. If it leaks, most of the refrigeration oil can enter the second passage 201 . In this embodiment, the second communication 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 seal 6 is provided between the eccentric sleeve 7 and the crankshaft 2 (optionally, the elastic seal 6 can abut against the crankshaft 2 and the eccentric sleeve 7 are installed, and the end of the crankshaft 2 and the end of the eccentric sleeve 7 compress the elastic seal 6, thereby realizing that the elastic seal 6 will fit the position where the crankshaft 2 and the eccentric sleeve 7 are in contact. Optional Alternatively, the elastic seal 6 can also be installed on the side surface of the crankshaft 2 and the eccentric sleeve 7, so as to realize that the communication hole 601 on the elastic seal 6 connects the second channel 201 and the fourth channel 701, and the structure is not limited); The elastic seal 6 is provided with a communication hole 601 connecting the second channel 201 and the fourth channel 701 , and the refrigerant oil in the fourth channel 701 on the eccentric sleeve 7 enters the second channel 201 on the crankshaft 2 through the communication hole 601 . An elastic seal 6 is provided between the eccentric sleeve 7 and the crankshaft 2. The elastic seal 6 has a certain deformability and can be in close contact with the end face of the crankshaft 2, and at the same time, it is in close contact with the surface of the eccentric sleeve 7 to seal the end face of the crankshaft 2. There may be a gap between the eccentric sleeve 7. Therefore, when the refrigeration oil in the fourth channel 701 enters the communication hole 601, the refrigeration oil is not easy to leak from between the elastic seal 6 and the eccentric sleeve 7; when the refrigeration oil in the communication hole 601 enters the second channel 201, The refrigerant oil is less likely to leak from between the elastic seal 6 and the end face of the crankshaft 2 . In this embodiment, the second communication channel further includes a communication hole 601 .

Please refer to FIG. 4 , as another specific embodiment of the scroll compressor provided by the present application, the eccentric sleeve 7 is provided with a first installation groove 702; the elastic seal 6 is arranged in the first installation groove 702, and the elastic The seal 6 is in contact with the end face of the crankshaft 2 . The vibration during the operation of the scroll compressor and the rotation of the components are not easy to change the position of the elastic seal 6, and the elastic seal 6 can be located in the first installation groove 702 relatively stably, so as to align the eccentric sleeve 7 and the crankshaft 2 with each other. Better sealing between the end faces.

Please refer to FIGS. 4-5 , as another specific embodiment of the scroll compressor provided by the present application, a crank pin 9 is provided between the crankshaft 2 and the eccentric sleeve 7, and the crank pin 9 is movably arranged on the eccentric sleeve 7 ( Specifically, an eccentric hole may be provided 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 chamber 10). The end of the crank pin 9 away from the crankshaft 2 is located in the oil cavity 10 , and the part of the crank pin 9 located in the oil cavity 10 is sleeved with an elastic retaining ring 13 . The retaining ring 13 is located in the oil chamber 10 , and the surface of the side of the eccentric sleeve 7 away from the crankshaft 2 (that is, a part of the inner wall of the oil chamber 10 ) is in contact with the retaining ring 13 . Therefore, the retaining ring 13 is opposite to the eccentric sleeve 7 A certain elastic pressure is applied, so that the eccentric sleeve 7 always has a tendency to move in a direction close to the crankshaft 2 relative to the crank pin 9, the eccentric sleeve 7 can stably contact the end face of the crankshaft 2, and there is no gap between the eccentric sleeve 7 and the end face of the crankshaft 2. It is easy to form a gap, and the refrigeration oil is not easy to leak.

Optionally, when the elastic sealing member 6 is arranged between the eccentric sleeve 7 and the crankshaft 2, the elastic retaining ring 13 exerts a certain elastic pressure on the eccentric sleeve 7, so that the eccentric sleeve 7 always has a direction close to the crankshaft 2 relative to the crank pin 9. With the direction of movement, the eccentric sleeve 7 can stably contact the elastic seal 6, and combined with the elastic deformation ability of the elastic seal 6 itself, the eccentric sleeve 7 and the end face of the crankshaft 2 can be well sealed.

Please refer to FIG. 5 , as another specific embodiment of the scroll compressor provided by the present application, a second installation groove 902 is formed on the crank pin 9, and the elastic retaining ring 13 is arranged in the second installation groove 902 (the second installation groove 902). The inner wall of the groove 902 is a part of the inner wall of the oil chamber 10 ), the elastic retaining ring 13 is not easy to be separated from the crank pin 9 , and can continuously and stably exert pressure on the eccentric sleeve 7 .

Referring to FIG. 6 , as another specific embodiment of the scroll compressor provided by the present application, the movable scroll 5 has a fifth channel 501 (it can be understood that the fifth channel 501 is in communication with the first communication channel 11 ) It can be directly communicated with the first communication channel 11, or it can be communicated with the first communication channel 11 through the oil cavity 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 channel 11 enters the fifth channel 501 on the movable scroll 5 , and then enters the low pressure side 101 of the low pressure casing 1 from the outlet on the fifth channel 501 . The refrigeration oil entering into the low pressure side 101 and the refrigerant enter into the compression chamber 14 enclosed by the stationary scroll 4 and the movable scroll 5 for compression. In this embodiment, the second communication channel includes a fifth channel 501 .

Referring to FIG. 6 , as another specific embodiment of the scroll compressor provided by the present application, the movable scroll 5 has a fifth channel 501 (it can be understood that the fifth channel 501 is in communication with the first communication channel 11 ) It can be directly communicated with the first communication channel 11, or it can be communicated with the first communication channel 11 through the oil cavity 10). The movable scroll 5 and the stationary scroll 4 enclose the compression chamber 14. The compression chambers 14 communicate with each other. The refrigerant oil passing through the first communication channel 11 enters the fifth channel 501 on the movable scroll 5 , and then enters the compression chamber 14 from the outlet of the fifth channel 501 . It can be understood that when the movable scroll 5 translates relative to the stationary scroll 4, the corresponding structure on the stationary scroll 4 can close the outlet of the fifth passage 501 with the change of the position of the movable scroll 5. At this time, The fifth passage 501 is no longer communicated with the compression chamber 14 , and the refrigeration oil cannot enter the compression chamber 14 , so as to control the amount of the refrigeration oil entering the compression chamber 14 . When the stationary scroll 4 does not close the outlet of the fifth passage 501 , the fifth passage 501 communicates with the compression chamber 14 , and the refrigeration oil can enter the compression chamber 14 . Further, when the movable scroll 5 moves in translation relative to the stationary scroll 4 , the stationary scroll 4 intermittently closes the outlet of the fifth passage 501 , and finally realizes the intermittent communication between the fifth passage 501 and the compression chamber 14 .

Please refer to FIG. 7 , as another specific embodiment of the scroll compressor provided by the present application, the eccentric sleeve 7 is provided with an oil return groove 703 , and the gap between the inner wall of the oil return groove 703 and the first bearing 12 forms a first communication channel 11. The above-mentioned oil return groove 703 can be formed by cutting a certain structure on the side surface of the eccentric sleeve 7, which is easy to process. The depth of the oil return groove 703 can be adjusted according to requirements, so that the refrigeration oil can smoothly pass through the first communication channel 11 .

Please refer to FIG. 1 , as another specific embodiment of the scroll compressor provided by the present application, a bracket 15 is provided in the low-pressure housing 1, and the crankshaft 2 is rotatably arranged on the bracket 15; the stationary scroll 4 has an oil return port 803 is connected to the sixth channel 401, the sixth channel 401 is provided with a throttle member 16, the throttle member 16 can reduce the pressure of the refrigeration oil; the bracket 15 has a first channel connecting the sixth channel 401 and the first communication channel 11 1501. The oil-gas separation component 8 separates the mixture of the refrigeration oil and the refrigerant, and the separated refrigeration oil leaves the oil-gas separation component 8 through the oil return port 803 , enters the sixth passage 401 on the stationary scroll 4 , and is trapped in the sixth passage 401 . The throttling member 16 is depressurized. The refrigerated oil with reduced pressure leaves the sixth channel 401 and then enters the first channel 1501. The refrigerated oil leaves the first channel 1501 and flows to the first communication channel 11, and passes through the friction pair between the first bearing 12 and the eccentric sleeve 7, At the same time, it can also contact the movable scroll 5 and the crankshaft 2; therefore, when the crankshaft 2 drives the movable scroll 5 to rotate, the crankshaft 2, the eccentric sleeve 7, the first bearing 12 and the movable scroll 5 are not easily worn.

Referring to FIG. 2 , as another specific embodiment of the scroll compressor provided in the present application, the bracket 15 has a bearing chamber 1502 that communicates with the first passage 1501 and the first communication passage 11 ; a second bearing is installed in the bearing chamber 1502 18; The bracket 15 is provided with a vacant hole 1503; Simultaneously referring to FIG. 6 , the refrigerated oil leaves the first passage 1501 and enters the bearing chamber 1502 on the bracket 15 , then flows into the first communication passage 11 , passes through the first communication passage 11 and reaches the oil chamber 10 or enters the bearing chamber 10 on the movable scroll 5 . inside the fifth channel 501 .

Referring to FIG. 2 , as another specific embodiment of the scroll compressor provided by the present application, a shaft seal 17 is installed on the crankshaft 2 ; Therefore, the refrigerant oil entering the bearing chamber 1502 on the bracket 15 from the first channel 1501 can only flow to the first communication channel 11, and is not easy to enter the low pressure shell directly from the gap between the crankshaft 2 and the inner wall of the escape hole 1503 inside the low-pressure side 101 of the casing 1; the refrigeration oil separated and returned from the oil-gas separation assembly 8 must pass through the first communication passage 11 to enter the low-pressure side 101 of the low-pressure casing 1, or enter the movable scroll 5 and the static Inside the compression chamber 14 between the scrolls 4 . Make sure that all the returned refrigerant oil passes through the first communication channel 11, so that there is a sufficient amount of refrigerant oil to pass through the friction pair between the first bearing 12 and the eccentric sleeve 7, and a sufficient amount of refrigerant oil to connect with the movable scroll 5 and the crankshaft. 2 contact; therefore, when the crankshaft 2 drives the movable scroll 5 to rotate, the crankshaft 2, the eccentric sleeve 7, the first bearing 12 and the movable scroll 5 are not easy to wear.

Referring to FIG. 1 , as another specific embodiment of the scroll compressor provided in the present application, a third bearing 19 is installed in the low pressure housing 1 ; The third bearing 19 and the second bearing 18 can support the crankshaft 2 at two different positions, so that the crankshaft 2 can rotate relatively stably.

Referring to FIG. 1 , as another specific embodiment of the scroll compressor provided by the present application, the low-pressure casing 1 is provided with a first positioning groove 103 , the stationary scroll 4 is provided with a second positioning groove 402 , and the bracket 15 is provided with a second positioning groove 402 . Position vias 1504. The scroll compressor further includes a positioning pin 20 penetrating the positioning 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 housing 1 , the bracket 15 and the stationary scroll 4 are positioned and connected through the positioning pins 20 , and the relative positions are relatively stable.

Referring to FIG. 1 , as another specific embodiment of the scroll compressor provided in the present application, the drive 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 electrical control 303 for electrical connection between the motor stator 301 and the motor rotor 302 ; the crankshaft 2 is provided on the motor rotor 302 . The electrical control 303 controls the operation of the motor stator 301 and the motor rotor 302, thereby driving the crankshaft 2 to rotate. Optionally, the electrical controls 303 may also control the operation of other components of the scroll compressor.

Please refer to FIG. 2 , as another specific embodiment of the scroll compressor provided by the present application, the oil-gas separation assembly 8 includes a high-pressure casing 801 disposed on the stationary scroll 4, and an oil branch pipe 802 located in the high-pressure casing 801; The high pressure housing 801 is provided with an exhaust port 804 ; the oil return port 803 is provided on the high pressure housing 801 . The mixture of refrigeration oil and refrigerant in the high pressure shell 801 is centrifuged by the oil branch pipe 802, the refrigerant is discharged through the exhaust port 804, and flows through the pipeline to the air inlet 102 in the low pressure shell 1 and enters the low pressure side 101 ; The refrigeration oil flows out from the oil return port 803 and flows toward the first communication channel 11 .

The embodiments of the present application also provide an air conditioner, including the scroll compressor in any of the above embodiments. In the scroll compressor of the air-conditioning equipment, the refrigeration oil that is separated and circulated by the oil-gas separation component 8 can pass through the friction pair of the first bearing 12, and can also be in contact with the eccentric sleeve 7, the movable scroll 5 and the crankshaft 2; therefore, When the crankshaft 2 drives the movable scroll 5 to rotate, the crankshaft 2 , the eccentric sleeve 7 , the first bearing 12 and the movable scroll 5 are not easily worn. Air conditioning equipment has a long service life and operates with low noise.

The embodiments of the present application further provide a vehicle, including the air conditioner in the above embodiments. The scroll compressor is used as a component of the vehicle air conditioner, and the vehicle also includes other necessary components constituting the vehicle air conditioner in the prior art.

In this application, the specific type of the above vehicle is not limited. For example, the vehicle can be a traditional fuel vehicle or a new energy vehicle. The new energy vehicle includes but is not limited to pure electric vehicles, extended-range electric vehicles, hybrid vehicles Power vehicles, fuel cell electric vehicles, hydrogen engine vehicles, etc., are not particularly limited in this embodiment.

Obviously, the above-mentioned embodiments of the present application are only examples for clearly illustrating the present application, rather than limiting the implementation of the present application. For those of ordinary skill in the art, changes or modifications in other different forms can also be made on the basis of the above description. There is no need and cannot be exhaustive of all implementations here. Any modifications, equivalent replacements and improvements made within the spirit and principles of this application shall be included within the protection scope of the claims of this application.

Claims (20)

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.

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