Compressor and vehicle

Abstract

The utility model provides a compressor and a vehicle. The compressor comprises a shell with a containing cavity, a vortex plate assembly, a supporting body and a rotating shaft. A movable vortex plate in the vortex plate assembly is eccentrically arranged on a rotating shaft, a first back pressure cavity and a second back pressure cavity which are arranged in a separated mode are defined by one side of the movable vortex plate, a supporting body and the rotating shaft, and an air suction cavity, an exhaust cavity and a middle cavity located between the air suction cavity and the exhaust cavity are formed between the other side of the movable vortex plate and a static vortex plate. The first back pressure cavity is communicated with the air suction cavity or the middle cavity, a communication opening communicated with the exhaust cavity is formed in the supporting body, and the first back pressure cavity and the second back pressure cavity can be alternately communicated with the exhaust cavity through the communication opening along with the translation of the movable vortex plate. According to the compressor disclosed by the utility model, the cavity on the back surface of the orbiting scroll is associated with the exhaust cavity and the suction cavity or the middle cavity, so that the contact force between the orbiting scroll and the support body is reduced, the abrasion loss of the support body is further reduced, and the reliability of the compressor is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, and in particular to a compressor; at the same time, the utility model also relates to a vehicle equipped with the compressor. Background Art

[0002] In order to solve the problem of the movable scroll in the scroll compressor being worn by the force between it and the fixed scroll, a shaft seal is usually added between the support body and the main shaft in the prior art, so that a closed back pressure chamber is formed between the back of the movable disk and the support body and the main shaft. The inlet of the back pressure chamber is connected to the oil storage chamber at the bottom of the exhaust chamber through a throttling channel, introducing high-pressure oil and gas. The outlet of the back pressure chamber is connected to the suction chamber through a pressure relief valve. The pressure when the pressure relief valve is opened will determine the pressure difference between the back pressure chamber and the suction chamber. This control method will generate a back pressure higher than the suction pressure on the back of the movable disk, which acts on the back of the movable disk and is opposite to the axial gas force on the front of the movable disk. It can be used to offset the axial gas force and reduce the contact force between the movable disk and the support surface of the support body.

[0003] However, since the pressure between the back-pressure chamber and the suction chamber depends on the constant operating pressure of the pressure relief valve, when the suction pressure remains unchanged, the back-pressure chamber pressure also remains unchanged. When the exhaust pressure increases with the increase of heat load, the axial gas force of the moving disc will also increase. In this way, the back-pressure pressure cannot completely offset the axial gas force, so that the contact force between the moving disc and the support surface of the support body will also increase with the increase of exhaust pressure, thereby causing an increase in wear. Utility Model Content

[0004] In view of this, the present invention aims to provide a compressor to reduce the wear of the support body, thereby improving the reliability of the compressor.

[0005] In order to achieve the above-mentioned purpose, the technical solution of the utility model is achieved as follows:

[0006] A compressor comprises a housing having a cavity, a scroll assembly and a support body disposed in the cavity, and a rotating shaft disposed on the support body; a movable scroll in the scroll assembly is eccentrically disposed on the rotating shaft, and a first back-pressure chamber and a second back-pressure chamber are formed between one side of the movable scroll and the support body and the rotating shaft, and an intake chamber, an exhaust chamber, and an intermediate chamber located therebetween are formed between the other side of the movable scroll and the fixed scroll;

[0007] The first back-pressure chamber is communicated with the suction chamber or the intermediate chamber, and a communication port communicating with the exhaust chamber is provided on the support body. As the movable scroll moves horizontally, the first back-pressure chamber and the second back-pressure chamber can be alternately communicated with the exhaust chamber through the communication port.

[0008] Furthermore, the shell is provided with a communicating cavity communicating with the exhaust cavity, and an oil storage cavity communicating with the communicating cavity; the communicating port is communicated with the oil storage cavity, and is communicated with the exhaust cavity through the oil storage cavity.

[0009] Furthermore, the communicating port is connected to the oil storage chamber through a communicating channel; the communicating channel includes a first channel provided on the support body and connected to the communicating port, a second channel provided on the shell and connected to the oil storage chamber, and a third channel provided on the static scroll and connected between the first channel and the second channel.

[0010] Furthermore, the first back-pressure chamber and the second back-pressure chamber are both arranged along the circumferential direction of the movable scroll, and are spaced apart from the inside to the outside in the radial direction of the movable scroll.

[0011] Furthermore, the support body includes a support seat fixed in the shell, and a bearing provided on the support seat. The rotating shaft passes through the support seat and is rotatably provided on the support body through the bearing.

[0012] Furthermore, a gap is formed between the rotating shaft and the support seat; the first back pressure chamber is connected to the suction chamber through the gap and the volume chamber, or a seal for sealing the gap is provided between the rotating shaft and the support seat, and a vent connected to the intermediate chamber is provided on the movable scroll, and the first back pressure chamber is connected to the intermediate chamber through the vent.

[0013] Furthermore, the support seat includes a mounting portion for mounting the bearing, and a supporting portion located on the outer periphery of the mounting portion and extending toward the movable scroll; the first back pressure chamber includes a first portion formed by the mounting portion, the supporting portion and the rotating shaft structure, and a second portion formed by the supporting portion and the movable scroll structure, and the first portion and the second portion are connected through a gap provided between the supporting portion and the movable scroll; the second back pressure chamber is formed between the supporting portion and the movable scroll.

[0014] Furthermore, the movable scroll is provided with an inner annular groove and an outer annular groove spaced along its own radial direction on the side facing the support body; the second part is formed by the support part and the inner annular groove, and the second back pressure chamber is formed by the support part and the outer annular groove.

[0015] Furthermore, the support seat includes a seat body arranged in the shell, and an anti-wear plate arranged on the side of the seat body facing the movable scroll; the mounting portion and the supporting portion are arranged on the seat body; the support seat is in contact with the movable scroll through the anti-wear plate, and the connecting port is arranged on the anti-wear plate.

[0016] Compared with the prior art, the present invention has the following advantages:

[0017] The compressor described in the present invention enables the first back-pressure chamber to be connected with the suction chamber or the intermediate chamber. With the translation of the movable scroll, the first back-pressure chamber and the second back-pressure chamber can be alternately connected with the exhaust chamber through the connecting port, so that the cavity on the back of the movable scroll is associated with the exhaust chamber and the suction chamber or the intermediate chamber, and can change with the suction pressure and the exhaust pressure, which is beneficial to offset the force applied by the gas between the movable scroll and the static scroll to the movable scroll close to the support body, which is beneficial to reduce the contact force between the movable scroll and the support body, and further beneficial to reduce the wear of the support body, thereby helping to improve the reliability of the compressor.

[0018] In addition, the connecting port is connected to the oil storage chamber, and is connected to the exhaust chamber through the oil storage chamber, which is beneficial for the oil in the oil storage chamber to flow into the first back pressure chamber or the second back pressure chamber, thereby improving the lubrication effect of the components in the back pressure chamber. The provision of the first channel, the second channel and the third channel is beneficial for achieving the connection between the connecting port and the oil storage chamber. The first back pressure chamber and the second back pressure chamber are spaced apart in the radial direction of the movable scroll, which is beneficial for improving the uniformity of the force on the two. The provision of the support seat and the bearing is not only beneficial for the installation of the rotating shaft, but also for improving the supporting effect on the movable scroll. The first back pressure chamber is connected to the suction chamber through the gap and the accommodating chamber, or an air vent is provided for connecting the intermediate chamber and the first back pressure chamber, which is beneficial for achieving the connection between the first back pressure chamber and the intermediate chamber.

[0019] Furthermore, the arrangement of the mounting and support portions facilitates the formation of the first and second back-pressure chambers. The provision of the inner and outer annular grooves facilitates molding on the orbiting scroll, and also facilitates the formation of the first and second back-pressure chambers. The provision of a wear plate on the seat improves the wear resistance of the support body, thereby extending its service life.

[0020] In addition, another object of the present invention is to provide a vehicle equipped with the compressor as described above.

[0021] The vehicle described in the utility model is advantageous in improving the performance of the thermal management system on the vehicle by providing the above-mentioned compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] The accompanying drawings, which constitute part of the present invention, are intended to provide a further understanding of the present invention. The exemplary embodiments of the present invention and their descriptions are intended to explain the present invention and do not constitute an improper limitation of the present invention. In the accompanying drawings:

[0023] Figure 1 This is a schematic diagram of the internal structure of the compressor according to an embodiment of the present utility model;

[0024] Figure 2 This is a schematic diagram of a partial structure inside the compressor according to an embodiment of the present utility model;

[0025] Figure 3 This is a schematic structural diagram of the support body according to an embodiment of the present utility model;

[0026] Figure 4 This is a schematic structural diagram of the movable scroll according to an embodiment of the present utility model;

[0027] Figure 5 This is a structural schematic diagram of the movable scroll according to an embodiment of the present invention in one position;

[0028] Figure 6 This is a structural schematic diagram of the movable scroll according to an embodiment of the present invention in another position.

[0029] Description of reference numerals:

[0030] 1. Casing; 2. Stationary scroll; 3. Orbital scroll; 4. Support; 5. Rotating shaft; 6. Motor; 7. First bearing; 8. Second bearing;

[0031] 100, suction chamber; 200, intermediate chamber; 300, exhaust chamber; 400, communication chamber; 500, oil storage chamber; 600, communication port; 700, communication channel; 800, first back pressure chamber; 900, second back pressure chamber;

[0032] 101. Shell body; 102. End cover; 103. Air inlet; 104. Cavity;

[0033] 201, vent;

[0034] 301, mounting groove; 302, inner annular groove; 303, outer annular groove; 304, limiting groove; 305, weight reduction groove;

[0035] 401, support seat; 4011, mounting portion; 4012, support portion; 402, wear plate;

[0036] 501. Eccentric portion; 502. Third bearing;

[0037] 701, third channel; 702, first channel; 703, second channel;

[0038] 801, Part 1; 802, Part 2. DETAILED DESCRIPTION

[0039] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features therein can be combined with each other.

[0040] In the description of this utility model, it should be noted that if terms such as "upper," "lower," "inner," and "back" appear, they are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They do not indicate or imply that the device or component referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, if terms such as "first" and "second" appear, they are used solely for descriptive purposes and should not be construed as indicating or implying relative importance.

[0041] The present invention will be described in detail below with reference to the accompanying drawings and in combination with embodiments.

[0042] This embodiment relates to a compressor to solve the problem in the prior art that the movable scroll 3 is subjected to unbalanced force, resulting in severe wear of the support body 4.

[0043] In terms of overall structure, the compressor includes a casing 1 having a volume 104, a scroll assembly and a support body 4 disposed in the volume 104, and a rotating shaft 5 mounted on the support body 4. The orbiting scroll 3 in the scroll assembly is eccentrically mounted on the rotating shaft 5. A first back-pressure chamber 800 and a second back-pressure chamber 900 are formed between one side of the orbiting scroll 3 and the support body 4 and the rotating shaft 5. An intake chamber 100, an exhaust chamber 300, and an intermediate chamber 200 located therebetween are formed between the other side of the orbiting scroll 3 and the fixed scroll 2.

[0044] Among them, the first back pressure chamber 800 is connected to the suction chamber 100 or the intermediate chamber 200, and a connecting port 600 connected to the exhaust chamber 300 is provided on the support body 4, and with the translation of the movable scroll 3, the first back pressure chamber 800 and the second back pressure chamber 900 can be alternately connected to the exhaust chamber 300 through the connecting port 600.

[0045] The compressor described in this embodiment enables the first back pressure chamber 800 to be connected with the suction chamber 100 or the intermediate chamber 200. With the translation of the movable scroll 3, the first back pressure chamber 800 and the second back pressure chamber 900 can be alternately connected with the exhaust chamber 300 through the connecting port 600, so that the cavity on the back of the movable scroll 3 is associated with the exhaust chamber 300 and the suction chamber 100 or the intermediate chamber 200, and can change with the suction pressure and the exhaust pressure, which is beneficial to offset the force applied by the gas between the movable scroll 3 and the static scroll 2 to the movable scroll 3 close to the support body 4, and can help reduce the contact force between the movable scroll 3 and the support body 4, and then help reduce the wear of the support body 4, thereby helping to improve the reliability of the compressor.

[0046] Based on the above overall introduction, an exemplary structure of the compressor described in this embodiment is as follows Figure 1 and Figure 2As shown in FIG. , the housing 1 comprises a housing body 101 with an open end, and an end cover 102 for sealing the open right end of the housing 1. The fixed scroll 2 is disposed at the right end of the housing body 101, the orbiting scroll 3 is located to the left of the fixed scroll 2, and the support body 4 is located to the left of the orbiting scroll 3 and supports the back of the orbiting scroll 3, thereby limiting the leftward displacement of the orbiting scroll 3 along the axial direction of the rotating shaft 5.

[0047] Among them, the working principle of the movable scroll 3 and the static scroll 2 is to use the relative orbital motion of the movable and static scrolls to form a continuous change of the closed volume. The volume gradually decreases from the outside to the inside, and the pressure gradually increases from the outside to the inside, forming the above-mentioned suction chamber 100, intermediate chamber 200, exhaust chamber 300 and other symmetrical crescent-shaped closed chambers. The suction chamber 100 is a low-pressure suction pressure, the exhaust chamber 300 is an exhaust pressure, and the intermediate chamber 200 is a pressure value. In view of the pressure value between the suction and exhaust, it is proportional to the suction pressure. The gas in these different chambers will generate an axial force on the bottom surface of the movable scroll 3, acting on the supporting surface between the movable scroll 3 and the support body 4. The magnitude of the axial gas force of the movable scroll 3 depends on the magnitude of the suction pressure and the exhaust pressure. When the exhaust pressure is high, the axial force also increases, causing the friction and wear between the back pressure of the movable scroll 3 and the supporting surface of the support body 4 to increase.

[0048] As a preferred embodiment, the support body 4 includes a support seat 401 fixed in the housing 1, and a bearing provided on the support seat 401. The rotating shaft 5 passes through the support seat 401 and is rotatably provided on the support body 4 via the bearing. Here, the arrangement of the support seat 401 and the bearing not only facilitates the installation of the rotating shaft 5, but also helps to improve the supporting effect on the movable scroll 3. In terms of specific structure, Figure 1 As shown in the figure, the bearing on the support seat 401 is called the first bearing 7, and the bearing located at the left end of the shell body 101 is called the second bearing 8. The rotating shaft 5 is specifically rotatably set on the first bearing 7 and the second bearing 8, and is driven to rotate by the motor 6.

[0049] like Figure 2 and Figure 3 As shown in , the support seat 401 in this embodiment includes a mounting portion 4011 for mounting the first bearing 7, and a support portion 4012 located on the outer periphery of the mounting portion 4011 and extending toward the movable scroll 3. The first back pressure chamber 800 includes a first portion 801 formed by the mounting portion 4011, the support portion 4012, and the rotating shaft 5, and a second portion 802 formed by the support portion 4012 and the movable scroll 3. The first portion 801 and the second portion 802 are connected through a gap provided between the support portion 4012 and the movable scroll 3. The second back pressure chamber 900 is formed between the support portion 4012 and the movable scroll 3. Here, the provision of the mounting portion 4011 and the support portion 4012 facilitates the formation of the first back pressure chamber 800 and the second back pressure chamber 900.

[0050] As a preferred embodiment, the first back-pressure chamber 800 and the second back-pressure chamber 900 are both arranged along the circumference of the orbiting scroll 3 and spaced apart from the inside to the outside in the radial direction of the orbiting scroll 3. This facilitates the formation of the two back-pressure chambers and improves the uniformity of the force applied by the gas in the back-pressure chambers to the orbiting scroll 3.

[0051] Specifically, if Figure 4 As shown in FIG, the side of the orbiting scroll 3 facing the support body 4 is provided with an inner annular groove 302 and an outer annular groove 303 spaced apart along its radial direction. The second portion 802 is formed by the support portion 4012 and the inner annular groove 302, and the second backpressure chamber 900 is formed by the support portion 4012 and the outer annular groove 303. The provision of the inner annular groove 302 and the outer annular groove 303 facilitates molding of the orbiting scroll 3 and also facilitates the formation of the first backpressure chamber 800 and the second backpressure chamber 900.

[0052] In addition, a mounting groove 301 located within the inner annular groove 302 is provided on the back of the movable scroll 3, and a third bearing 502 is provided in the mounting groove 301. An eccentric portion 501 is eccentrically arranged at the right end of the rotating shaft 5, and the eccentric portion 501 is connected to the movable scroll 3 through the third bearing 502.

[0053] As a preferred embodiment, still referring to Figure 3 As shown in FIG, the support seat 401 includes a seat body disposed within the housing 1 and a wear plate 402 disposed on the side of the seat body facing the orbiting scroll 3. A mounting portion 4011 and a support portion 4012 are provided on the seat body. The support seat 401 abuts against the orbiting scroll 3 via the wear plate 402, and the communication port 600 is provided on the wear plate 402. The provision of the wear plate 402 on the seat body improves the wear resistance of the support body 4, thereby extending the service life of the support body 4.

[0054] To prevent the movable scroll 3 from rotating around its own axis, Figure 5 As shown in , a plurality of limiting grooves 304 are provided in the inner annular groove 302 and are spaced apart along the circumference of the movable scroll 3. A limiting pin is provided on the support seat 401, which passes through the anti-wear plate 402 and corresponds to each limiting groove 304. The cross-sectional area of ​​the limiting groove 304 is larger than the cross-sectional area of ​​the limiting pin. The cross-sectional area of ​​the limiting groove 304 is circular, and the limiting pins are respectively inserted into the corresponding limiting grooves 304, and can abut against the inner circumferential wall of the limiting groove 304 when the movable scroll 3 moves relative to the fixed scroll 2, thereby preventing the movable scroll 3 from rotating around its own axis. In addition, a plurality of weight-reducing grooves 305 are arranged at intervals on the top of the inner annular groove 302 to improve the translational stability of the movable scroll 3.

[0055] In this embodiment, Figure 2As shown in , a gap is formed between the rotating shaft 5 and the support seat 401. A through hole is provided on the mounting portion 4011 for the rotating shaft 5 to pass through. The gap is specifically located between the inner peripheral wall of the through hole and the outer peripheral wall of the rotating shaft 5. As a feasible embodiment, the first back pressure chamber 800 is connected to the suction chamber 100 through the gap and the storage chamber 104. Part of the gas flowing into the storage chamber 104 from the air inlet 103 can flow into the first part 801 and the second part 802 through the gap, thereby achieving communication between the first back pressure chamber 800 and the suction chamber 100. This configuration facilitates layout and implementation.

[0056] As another feasible embodiment, a seal for sealing the gap is provided between the rotating shaft 5 and the support seat 401, and an air vent connected to the intermediate cavity 200 is provided on the movable scroll 3, and the first back pressure cavity 800 is connected to the intermediate cavity 200 through the air vent. In specific implementation, the seal can be a shaft seal, which is conducive to sealing the gap. The air vent is provided between each intermediate cavity 200 and the first back pressure cavity 800, which is conducive to improving the communication efficiency between the first back pressure cavity 800 and the intermediate cavity 200. Here, the seal and the air vent for connecting the intermediate cavity 200 and the first back pressure cavity 800 are conducive to achieving the communication between the first back pressure cavity 800 and the intermediate cavity 200. The pressure of the intermediate cavity 200 is proportional to the suction cavity 100, so that the first back pressure cavity 800 is indirectly associated with the suction cavity 100.

[0057] To achieve communication between the second back pressure chamber 900 and the exhaust chamber 300, as shown in FIG. Figure 1 and Figure 2 As shown in , the housing 1 is provided with a communication chamber 400 communicating with the exhaust chamber 300, and an oil storage chamber 500 communicating with the communication chamber 400. The communication port 600 is in communication with the oil storage chamber 500, and is in communication with the exhaust chamber 300 through the oil storage chamber 500. Here, the communication port 600 is in communication with the oil storage chamber 500, and is in communication with the exhaust chamber 300 through the oil storage chamber 500, which facilitates the flow of oil in the oil storage chamber 500 into the first back pressure chamber 800 or the second back pressure chamber 900, thereby facilitating the lubrication of various components in the back pressure chamber (e.g., bearings, limit grooves 304, and limit pins, etc.).

[0058] Specific institutions, such as Figure 2As shown in , the connecting chamber 400 is provided on the end cover 102 and is connected to the exhaust chamber 300 through the vent hole 201. The connecting port 600 is connected to the oil storage chamber 500 through the connecting channel 700. The connecting channel 700 includes a first channel 702 provided on the support body 4 and connected to the connecting port 600, a second channel 703 provided on the shell 1 and connected to the oil storage chamber 500, and a third channel 701 provided on the fixed scroll 2 and connected between the first channel 702 and the second channel 703. Here, the first channel 702 is provided on the support portion 4012 and extends along the radial direction of the support body 4, the third channel 701 is provided along the axial direction of the fixed scroll 2 and is provided on the outer side of the fixed scroll 2, and the second channel 703 is provided downwardly inclined in the direction from top to bottom, so that the oil can flow into the second channel 703 by gravity and flow into the back pressure chamber through the connecting channel 700.

[0059] In this embodiment, Figure 5 As shown in , when the second back-pressure chamber 900 is in communication with the exhaust chamber 300 and the first back-pressure chamber 800 is in communication with the suction chamber 100 or the intermediate chamber 200, the pressure in the second back-pressure chamber 900 is close to or equal to the pressure in the exhaust chamber 300, thereby achieving a correlation with the exhaust pressure and causing the orbiting scroll 3 to exert a rightward axial force. The pressure in the first back-pressure chamber 800 is correlated with the suction chamber 100 or the intermediate chamber 200, exerting a rightward axial force on the orbiting scroll 3, thereby reducing the friction between the orbiting scroll 3 and the support body 4.

[0060] In this embodiment, Figure 6 As shown in , when the second back pressure chamber 900 is disconnected from the exhaust chamber 300, the first back pressure chamber 800 is connected to the suction chamber 100 or the intermediate chamber 200. When it is also connected to the exhaust chamber 300, the first back pressure chamber 800 is simultaneously associated with the exhaust chamber 300 and the suction chamber 100 or the intermediate chamber 200, and applies a rightward axial force to the movable scroll 3, thereby reducing the friction between the movable scroll 3 and the support body 4.

[0061] The compressor described in this embodiment optimizes the structure of the back pressure chamber between the movable scroll 3 and the support body 4, and establishes the relationship between the back pressure chamber and the exhaust chamber 300 and the intake chamber 100 or the intermediate chamber 200. It not only has a simple structure and low production cost, but also helps to reduce the wear of the support body 4, thereby helping to improve the performance of the compressor.

[0062] Furthermore, the present embodiment relates to a vehicle provided with the compressor as described above.

[0063] The vehicle described in this embodiment is advantageously improved in the performance of the thermal management system on the vehicle by providing the above-mentioned compressor.

[0064] The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A compressor, characterized in that: It comprises a housing (1) having a cavity (104), a scroll assembly and a support body (4) arranged in the cavity (104), and a rotating shaft (5) arranged on the support body (4); The movable scroll (3) in the scroll assembly is eccentrically arranged on the rotating shaft (5), and a first back-pressure chamber (800) and a second back-pressure chamber (900) are formed between one side of the movable scroll (3) and the support body (4) and the rotating shaft (5), and an air intake chamber (100), an air discharge chamber (300) and an intermediate chamber (200) located therebetween are formed between the other side of the movable scroll (3) and the fixed scroll (2); The first back-pressure chamber (800) is connected to the suction chamber (100) or the intermediate chamber (200), and a connecting port (600) connected to the exhaust chamber (300) is provided on the support body (4). As the movable scroll (3) moves horizontally, the first back-pressure chamber (800) and the second back-pressure chamber (900) can be alternately connected to the exhaust chamber (300) through the connecting port (600).

2. The compressor according to claim 1, characterized in that: The housing (1) is provided with a communication cavity (400) communicating with the exhaust cavity (300), and an oil storage cavity (500) communicating with the communication cavity (400); The communication port (600) is in communication with the oil storage chamber (500), and is in communication with the exhaust chamber (300) through the oil storage chamber (500).

3. The compressor according to claim 2, characterized in that: The communication port (600) is in communication with the oil storage chamber (500) via a communication channel (700); The communicating channel (700) includes a first channel (702) provided on the supporting body (4) and communicating with the communicating port (600), a second channel (703) provided on the housing (1) and communicating with the oil storage chamber (500), and a third channel (701) provided on the static scroll (2) and communicating between the first channel (702) and the second channel (703).

4. The compressor according to any one of claims 1 to 3, characterized in that: The first back pressure chamber (800) and the second back pressure chamber (900) are both arranged along the circumference of the movable scroll (3), and are spaced apart from the inside to the outside in the radial direction of the movable scroll (3).

5. The compressor according to claim 4, characterized in that: The support body (4) includes a support seat (401) fixed in the shell (1) and a bearing provided on the support seat (401); the rotating shaft (5) passes through the support seat (401) and is rotatably provided on the support body (4) through the bearing.

6. The compressor according to claim 5, characterized in that: A gap is formed between the rotating shaft (5) and the supporting seat (401); The first back pressure chamber (800) is connected to the suction chamber (100) through the gap and the receiving chamber (104), or a seal for sealing the gap is provided between the rotating shaft (5) and the support seat (401), and a vent connected to the intermediate chamber (200) is provided on the movable scroll (3), and the first back pressure chamber (800) is connected to the intermediate chamber (200) through the vent.

7. The compressor according to claim 5, characterized in that: The support seat (401) comprises a mounting portion (4011) for mounting the bearing, and a supporting portion (4012) located on the periphery of the mounting portion (4011) and extending toward the movable scroll (3); The first back pressure chamber (800) comprises a first portion formed by the mounting portion (4011), the support portion (4012) and the rotating shaft (5), and a second portion formed by the support portion (4012) and the movable scroll (3), and the first portion and the second portion are connected via a gap provided between the support portion (4012) and the movable scroll (3); The second back pressure chamber (900) is formed between the support portion (4012) and the movable scroll (3).

8. The compressor according to claim 7, characterized in that: The movable scroll (3) is provided with an inner annular groove (302) and an outer annular groove (303) spaced apart along its radial direction on a side facing the support body (4); The second portion is formed by the support portion (4012) and the inner annular groove (302), and the second back pressure cavity (900) is formed by the support portion (4012) and the outer annular groove (303).

9. The compressor according to claim 7, characterized in that: The support seat (401) comprises a seat body provided in the housing (1), and a wear-resistant plate (402) provided on a side of the seat body facing the movable scroll (3); The mounting portion (4011) and the supporting portion (4012) are provided on the seat; The support seat (401) abuts against the movable scroll (3) via the anti-wear plate (402), and the communication port (600) is provided on the anti-wear plate (402).

10. A vehicle, characterized in that: The vehicle is provided with the compressor according to any one of claims 1 to 9.

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