Compressor, air conditioner and vehicle

Abstract

The compressor comprises a shell part, a motor part and a pump body part, a containing cavity is formed in the shell part, and an oil pool is arranged at the bottom of the containing cavity; the motor part is installed in the containing cavity and comprises a motor and a crankshaft, a first oil supply channel extending in the axial direction and a second oil supply channel communicating with the first oil supply channel are formed in the crankshaft, the second oil supply channel extends to the motor to guide oil liquid to the motor, and the end of the crankshaft extends into the oil pool to enable the first oil supply channel to communicate with the oil pool; the pump body part is installed in the containing cavity and located below the motor part, the pump body part comprises an air cylinder, the crankshaft is matched with a piston in the air cylinder to drive the piston to eccentrically rotate, the air cylinder is provided with a first oil return channel penetrating through the air cylinder in the vertical direction, and the first oil return channel is provided with a circumferential opening located in the peripheral wall of the air cylinder. Therefore, the influence of refrigerant impact on oil liquid flowing can be reduced, so that the oil liquid in the oil pool has enough height, and the operation stability of the compressor is ensured.

Description

TECHNICAL FIELD

[0001] The utility model relates to the compressor field especially is related to a compressor, air conditioner and vehicle. BACKGROUND

[0002] In the related art, when the compressor is in a low-temperature hibernation state, a large amount of refrigerant is dissolved in the oil pool of the compressor. After the compressor is started, the temperature rises, and the refrigerant in the oil pool flashes to generate a large amount of gas. The gas will impact the oil flowing to the oil pool and reduce the flow area of the oil. When the flow area is reduced, the oil will form an oil film due to the surface tension of the liquid, which makes it difficult for the oil to flow into the oil pool, thereby affecting the lubrication of the compressor. SUMMARY

[0003] The utility model discloses at least one of the technical problems existing in the prior art. To this end, one purpose of the utility model is to provide a compressor. The formation of the oil film in the first oil return channel is difficult, which is beneficial to reducing the impact of the refrigerant on the flow of the oil, so that the oil in the oil pool has sufficient height.

[0004] According to the compressor of the utility model embodiment, the first oil return channel has a circumferential opening on the outer peripheral wall of the cylinder, so that the cylinder and the shell part can jointly define the first oil return channel. The formation difficulty of the oil film in the first oil return channel can be increased, the impact of the refrigerant on the flow of the oil can be reduced, and the oil in the oil pool has sufficient height, thereby ensuring the operation stability of the compressor.

[0005] According to the compressor of the utility model embodiment, the first oil return channel has a circumferential opening on the outer peripheral wall of the cylinder, so that the cylinder and the shell part can jointly define the first oil return channel. The formation difficulty of the oil film in the first oil return channel can be increased, the impact of the refrigerant on the flow of the oil can be reduced, and the oil in the oil pool has sufficient height, thereby ensuring the operation stability of the compressor.

[0006] According to the compressor of some embodiments of the utility model, in the radial direction of the crankshaft, the maximum depth of the first oil return channel is D, which satisfies: 20mm≥D≥10mm.

[0007] According to the compressor of some embodiments of the present application, the central angle corresponding to the circumferential opening of the first oil return channel is α1 in the circumferential direction of the crankshaft, and 60°≥α1≥10° is satisfied.

[0008] According to the compressor of some embodiments of the present application, the first oil return channel is symmetrically arranged with respect to the radial direction of the crankshaft.

[0009] According to the compressor of some embodiments of the present application, the first oil return channel comprises a first side wall and a connecting bottom wall arranged oppositely, two ends of the connecting bottom wall are connected with the first side wall respectively, the first side wall is a plane or an arc surface, and the connecting bottom wall is a plane or an arc surface.

[0010] According to the compressor of some embodiments of the present application, the first side wall and the connecting bottom wall are arc transitioned.

[0011] According to the compressor of some embodiments of the present application, the first side wall and the outer peripheral wall of the cylinder are arc transitioned.

[0012] According to the compressor of some embodiments of the present application, the cylinder further comprises a second oil return channel, the first oil return channel and the second oil return channel are arranged at intervals in the circumferential direction of the cylinder, the second oil return channel penetrates the cylinder in the up-down direction, and the peripheral wall of the cross section of the second oil return channel is a closed loop.

[0013] According to the compressor of some embodiments of the present application, in the circumferential direction of the cylinder, and the minimum distance between two adjacent ones of the first oil return channel and the second oil return channel is greater than or equal to 3mm.

[0014] According to the compressor of some embodiments of the present application, the first oil return channel is a plurality of, the second oil return channel is a plurality of, and at least one second oil return channel is arranged between adjacent first oil return channels.

[0015] The utility model further proposes an air conditioner.

[0016] The air conditioner according to the embodiments of the present application comprises the compressor according to any one of the above embodiments.

[0017] The utility model further proposes a vehicle.

[0018] The vehicle according to the embodiments of the present application comprises the air conditioner according to any one of the above embodiments, or the compressor according to any one of the above embodiments.

[0019] The air conditioner, the vehicle and the compressor have the same advantages as the prior art, which will not be repeated here.

[0020] Additional aspects and advantages of the present application will be set forth in part in the following description, and in part will become apparent to those skilled in the art upon examination of the following description, or can be learned by practice of the application. BRIEF DESCRIPTION OF DRAWINGS

[0021] The above and / or additional aspects and advantages of the present application will become apparent and be readily appreciated from the following description, taken in conjunction with the accompanying drawings, in which:

[0022] Figure 1 is a sectional view of a compressor according to an embodiment of the present application;

[0023] Figure 2 is a top view of a pump body portion according to an embodiment of the present application;

[0024] Figure 3 is a schematic view of a relationship between a maximum depth of a first oil return passage and a relative height of a liquid surface of an oil sump according to an embodiment of the present application;

[0025] Figure 4 is a schematic view of a relationship between a central angle corresponding to a circumferential opening of the first oil return passage and the relative height of the liquid surface of the oil sump according to an embodiment of the present application;

[0026] Figure 5 is a top view of a pump body portion according to another embodiment of the present application.

[0027] REFERENCE NUMERALS:

[0028] compressor 100,

[0029] housing portion 1, accommodation cavity 11, discharge passage 12, intake passage 13, oil sump 14,

[0030] motor portion 2, motor 21, stator 211, rotor 212, crankshaft 22, first oil supply passage 221, second oil supply passage 222,

[0031] pump body portion 3, main bearing 31, first flat surface 311, connecting inclined surface 312, second flat surface 313, cylinder 32, oil return passage 33, oil return inlet 331, oil pump 4. DETAILED DESCRIPTION

[0032] Embodiments of the present application will be described in detail below with reference to the drawings, in which like reference numerals refer to like elements throughout. The embodiments described below are examples of the present application, and are not intended to limit the present application.

[0033] Hereinafter, with reference to the drawings, a compressor 100 according to an embodiment of the present application will be described.

[0034] As Figures 1-5 shown, the compressor 100 according to the embodiment of the utility model, including: shell part 1, motor part 2 and pump body part 3, shell part 1 inside is equipped with containing cavity 11, the bottom of containing cavity 11 is equipped with oil pool 14;Motor part 2 is installed in containing cavity 11, and motor part 2 includes motor 21 and crankshaft 22, and the first oil supply passage 221 along the axial direction extending is formed in crankshaft 22, and the second oil supply passage 222 is communicated with the first oil supply passage 221, and the second oil supply passage 222 extends to motor 21 to guide oil liquid to motor 21, and the end of crankshaft 22 extends to oil pool 14 to make the first oil supply passage 221 with oil pool 14 communicate;Pump body part 3 is installed in containing cavity 11 and is located below motor part 2, and pump body part 3 includes cylinder 31, and crankshaft 22 is matched with the piston 313 in cylinder 31 to drive the eccentric rotation of piston 313, and cylinder 31 is equipped with the first oil return passage 311 along the up and down direction through it, and the first oil return passage 311 has the circumferential opening located in the outer peripheral wall of cylinder 31.

[0035] Therefore, the difficulty of forming the oil film in the first oil return passage 311 can be increased, and the influence of the refrigerant impact on the oil flow is reduced, so that the oil liquid in the oil pool 14 has sufficient height, thereby ensuring the operation stability of the compressor 100.

[0036] First, as Figures 1-2 shown, the compressor 100 includes a shell part 1, a motor part 2 and a pump body part 3. The shell part 1 is provided with a containing cavity 11, and the top of the containing cavity 11 is provided with an exhaust passage 12 and the side wall is provided with an air inlet passage 13, the air inlet passage 13 is communicated with the outside of the shell part 1, the exhaust passage 12 is used for connecting the containing cavity 11 with the outside of the shell part 1, and the bottom of the containing cavity 11 is provided with an oil pool 14.

[0037] The motor part 2 is installed in the containing cavity 11 and located at the upper part of the containing cavity 11, and the motor part 2 includes a motor 21 and a crankshaft 22, the motor 21 includes a stator 211 and a rotor 212, the stator 211 is connected with the inner wall of the containing cavity 11 and is sleeved on the outside of the rotor 212, the crankshaft 22 penetrates the rotor 212 along the axial direction and extends to the lower part of the motor 21, the crankshaft 22 is connected with the rotor 212, and the stator 211 can drive the rotor 212 to rotate to drive the crankshaft 22 to rotate synchronously.

[0038] The crankshaft 22 is formed with a first oil supply passage 221 and a second oil supply passage 222 extending in the axial direction and arranged in sequence, the second oil supply passage 222 is located above the first oil supply passage 221 and communicates with the first oil supply passage 221, the lower end of the crankshaft 22 extends into the oil pool 14 so that the first oil supply passage 221 communicates with the oil pool 14, and the end of the second oil supply passage 222 away from the first oil supply passage 221 extends to the upper portion of the motor 21. The first oil supply passage 221 is provided with an oil pump 4, the oil pump 4 is used to suck oil into the first oil supply passage 221, and the second oil supply passage 222 is used to further guide the oil in the first oil supply passage 221 to the upper portion of the motor 21.

[0039] The pump body part 3 is installed in the containing cavity 11 and located below the motor part 2, the pump body part 3 includes a cylinder 31, the crankshaft 22 extends through the cylinder 31 in the axial direction and cooperates with a piston 313 in the cylinder 31, the crankshaft 22 is used to drive the piston 313 to rotate eccentrically, so that the cylinder 31 can suck in and compress the refrigerant from the intake passage 13. Among them, the cylinder 31 is provided with a first oil return passage 311, the first oil return passage 311 extends through the cylinder 31 in the up-down direction, and the first oil return passage 311 is adapted to guide the oil falling on the pump body part 3 into the oil pool 14.

[0040] Specifically, when the compressor 100 is running, the motor 21 can drive the crankshaft 22 to rotate, the crankshaft 22 can drive the piston 313 to operate, the cylinder 31 can suck in and compress the refrigerant from the outside of the shell part 1 through the intake passage 13, and the compressed refrigerant can flow through the containing cavity 11 and the exhaust passage 12 to be discharged to the outside of the shell part 1. At the same time, the oil pump 4 can suck the oil in the oil pool 14 into the first oil supply passage 221, the oil flows into the second oil supply passage 222 along the first oil supply passage 221, the oil can flow out from the upper end of the second oil supply passage 222 to the top of the motor 21 to cool the motor 21, and then the oil can flow down into the first oil return passage 311, the oil flowing into the first oil return passage 311 can lubricate the pump body part 3, and then flow back into the oil pool 14 along the first oil return passage 311.

[0041] It should be noted that when the compressor 100 is in a low-temperature dormant state, a large amount of refrigerant is dissolved in the oil pool 14 of the compressor 100, after the compressor 100 starts, the temperature rises, the refrigerant in the oil pool 14 flashes to produce a large amount of gas, which will impact the oil flowing to the oil pool 14 and reduce the flow area of the oil, when the flow area is reduced, the oil will form an oil film due to the surface tension of the liquid, which will make it difficult for the oil to flow into the oil pool 14, thereby affecting the lubrication of the compressor 100.

[0042] To solve the above problems, the first oil return channel 311 can be provided with a circumferential opening located on the outer peripheral wall of the cylinder 31, the circumferential opening is opposite to the inner wall of the accommodating cavity 11, and the shell part 1 is adapted to close the circumferential opening, so that the cylinder 31 and the shell part 1 can jointly define the first oil return channel 311. Specifically, the extension direction of the first oil return channel 311 can be parallel to the vertical direction, or the extension direction of the first oil return channel 311 can form an angle with the vertical direction, and the utility model does not limit this.

[0043] Through the above arrangement, the difficulty of forming the oil film in the first oil return channel 311 can be increased, the influence of the refrigerant impact on the oil flow can be reduced, and it is ensured that the oil can flow into the oil pool 14, so that the oil in the oil pool 14 has sufficient height.

[0044] According to the compressor 100 in the embodiment of the utility model, the first oil return channel 311 is provided with a circumferential opening located on the outer peripheral wall of the cylinder 31, so that the cylinder 31 and the shell part 1 can jointly define the first oil return channel 311, the difficulty of forming the oil film in the first oil return channel 311 can be increased, the influence of the refrigerant impact on the oil flow can be reduced, and it is ensured that the oil in the oil pool 14 has sufficient height, thereby ensuring the operation stability of the compressor 100.

[0045] In some embodiments of the utility model, as shown in Figure 2 In the radial direction of the crankshaft 22, the maximum depth of the first oil return channel 311 is D, and the following condition is met: 20mm≥D≥10mm.

[0046] That is, the outer diameter of the pump body can be set as D1, the minimum distance between the first oil return channel 311 and the axis of the crankshaft 22 can be set as D2, and the maximum depth D of the first oil return channel 311 is the difference between the outer diameter D1 of the pump body and the minimum distance D2 between the first oil return channel 311 and the axis of the crankshaft 22. Wherein, the maximum depth D of the first oil return channel 311 is greater than or equal to 10mm and less than or equal to 20mm, such as 10mm, 12mm, 14mm, 15mm, 16mm, 18mm, 20mm, etc.

[0047] Combining Figure 3 It can be known that when the maximum depth D of the first oil return channel 311 is in the above range, the first oil return channel 311 can have sufficient depth while ensuring the structural rigidity of the cylinder 31, the flow area of the first oil return channel 311 is ensured, the influence of the refrigerant impact on the oil flow is reduced, and the liquid level height of the oil pool 14 meets the lubrication requirement of the compressor 100. Therefore, the design rationality of the compressor 100 is improved.

[0048] In some embodiments of the utility model, as shown in Figure 2As shown, in the circumferential direction of the crankshaft 22, the central angle corresponding to the circumferential opening of the first oil return channel 311 can be set as α1, satisfying: 60°≥α1≥10°. That is to say, the central angle α1 corresponding to the circumferential opening of the first oil return channel 311 can be set to be greater than or equal to 10° and less than or equal to 60°, such as 10°, 20°, 30°, 40°, 50°, 60°, etc.

[0049] Combination Figure 4 As shown, when the central angle corresponding to the circumferential opening of the first oil return channel 311 is within the aforementioned range, the first oil return channel 311 can have sufficient depth while ensuring the structural rigidity of the cylinder 31. This ensures the flow area of ​​the first oil return channel 311, reduces the impact of refrigerant impact on oil flow, and ensures that the liquid level in the oil sump 14 meets the lubrication requirements of the compressor 100. This, in turn, helps improve the design rationality of the compressor 100.

[0050] In some embodiments of the present invention, such as Figure 2 As shown, the first oil return channel 311 can be arranged radially symmetrically about the crankshaft 22. This improves the flow stability of the oil in the first oil return channel 311, reduces the forming difficulty in the first oil return channel 311, and improves the reliability of the compressor 100.

[0051] In some embodiments of this utility model, the first oil return channel 311 includes a first side wall 3111 and a connecting bottom wall 3112 disposed opposite to each other. The two ends of the connecting bottom wall 3112 are respectively connected to the first side wall 3111. The first side wall 3111 is a planar or arc-shaped surface, and the connecting bottom wall 3112 is a planar or arc-shaped surface.

[0052] For example, refer to Figure 2 As shown, the first oil return channel 311 includes a first side wall 3111 and a connecting bottom wall 3112. There are two first side walls 3111, which are arranged opposite to each other. The connecting bottom wall 3112 is located between the two first side walls 3111 and its two ends are respectively connected to the two first side walls 3111. The first side wall 3111 can be constructed as a plane or an arc surface, and the connecting bottom wall 3112 can be constructed as a plane or an arc surface.

[0053] For example, such as Figure 2 As shown, the first sidewall 3111 can be constructed as a plane, and the connecting bottom wall 3112 can be constructed as an arc-shaped surface; as Figure 5 As shown, the first sidewall 3111 can be constructed as a plane, and the connecting bottom wall 3112 can be constructed as a plane; or, the first sidewall 3111 can be constructed as an arc-shaped surface, and the connecting bottom wall 3112 can be constructed as an arc-shaped surface; or, the first sidewall 3111 can be constructed as an arc-shaped surface, and the connecting bottom wall 3112 can be constructed as a plane. This utility model does not limit this.

[0054] Through the above arrangement, the spacing between the side walls of the first oil return channel 311 can be large, which facilitates increasing the difficulty of forming the oil film in the first oil return channel 311 and reducing the influence of the refrigerant impact on the oil flow.

[0055] Further, as shown in Figure 2 , the first side wall 3111 can be configured as a plane, the first side wall 3111 extends along the radial direction of the crankshaft 22, and the connecting bottom wall 3112 is configured as a circular arc surface, and the center of the connecting bottom wall 3112 is coincided with the center of the crankshaft 22. Therefore, the flow area of the first oil return channel 311 can be maximized, which facilitates reducing the influence of the refrigerant impact on the oil flow.

[0056] In some embodiments of the present application, as shown in Figure 2 , the first side wall 3111 and the connecting bottom wall 3112 can be circularly arc transitioned. Through the above arrangement, the difficulty of forming the first oil return channel 311 can be reduced, which facilitates improving the structural strength of the pump body part 3 and improving the flow stability of the oil in the first oil return channel 311.

[0057] In some embodiments of the present application, as shown in Figure 2 , the first side wall 3111 and the outer peripheral wall of the cylinder 31 can be circularly arc transitioned. Through the above arrangement, the structural strength of the pump body part 3 can be improved, and the pump body part 3 can be prevented from scratching other components during installation, thereby improving the design rationality of the compressor 100.

[0058] In some embodiments of the present application, as shown in Figure 2 , the cylinder 31 further comprises a second oil return channel 312, the first oil return channel 311 and the second oil return channel 312 are arranged spaced apart along the circumferential direction of the cylinder 31, the second oil return channel 312 penetrates the cylinder 31 along the up-down direction, the second oil return channel 312 is used for guiding the oil flowing to the pump body part 3 into the oil pool 14, and the peripheral wall of the cross section of the second oil return channel 312 is a closed loop shape, so that the second oil return channel 312 can be kept a certain interval with the inner wall of the shell part 1 along the radial direction of the crankshaft 22.

[0059] It can be understood that by arranging the second oil return channel 312, the flow area of the oil can be increased, which facilitates improving the efficiency of the oil flowing into the oil pool 14, and the outer peripheral wall of the cylinder 31 corresponding to the second oil return channel 312 can be used as a welding point connected with the shell part 1, so that the pump body part 3 is convenient to install, thereby improving the design rationality of the compressor 100.

[0060] In some embodiments of the present application, as shown in Figure 2As shown, the minimum distance between two adjacent first return oil channels 311 and second return oil channels 312 in the circumferential direction of the cylinder 31 is greater than or equal to 3mm, such as 5mm, 7mm, 10mm, etc. Through the above setting, the structural strength of the pump body part 3 can be guaranteed, and the overall stability of the compressor 100 is improved.

[0061] In some embodiments of the utility model, as shown in the figure, Figure 2 As shown, the first return oil channel 311 is multiple, the second return oil channel 312 is multiple, multiple first return oil channels 311 and multiple second return oil channels 312 are arranged at intervals in the circumferential direction of the cylinder 31, and at least one second return oil channel 312 is arranged between two adjacent first return oil channels 311 in the circumferential direction of the cylinder 31.

[0062] Through the above setting, the density of the first return oil channel 311 can be avoided to be too high, the structural strength of the pump body part 3 can be guaranteed, and the welding points of the pump body part 3 and the shell part 1 can be more easily arranged, and the design rationality of the compressor 100 is improved.

[0063] The utility model also proposes a kind of air conditioner.

[0064] According to the air conditioner of the utility model embodiment, it includes the compressor 100 according to any one of the above embodiments.

[0065] According to the air conditioner of the utility model embodiment, the operation stability of the compressor 100 is good, and the overall performance of the air conditioner is improved.

[0066] The utility model further proposes a kind of vehicle.

[0067] According to the vehicle of the utility model embodiment, it includes: the air conditioner according to any one of the above embodiments;Or, the compressor 100 according to any one of the above embodiments.

[0068] According to the vehicle of the utility model embodiment, the operation stability of the compressor 100 is good, the overall performance of the vehicle is improved, and the satisfaction of user is improved.

[0069] In the description of the utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the utility model and simplifying the description, and cannot be understood as indicating or implying that the indicated device or element must have a particular orientation, a particular orientation and operation, so it cannot be understood as a limitation on the utility model.

[0070] In the description of the present application, "first feature", "second feature" can include one or more of the features.

[0071] In the description of the present application, "a plurality of" means two or more.

[0072] In the description of the present application, the "above" or "below" of the first feature to the second feature can include that the first and second features are in direct contact, or can include that the first and second features are not in direct contact but are in contact through another feature between them.

[0073] In the description of the present application, the "above", "upper" and "upper" of the first feature to the second feature include that the first feature is directly above and obliquely above the second feature, or only indicates that the horizontal height of the first feature is higher than that of the second feature.

[0074] In the description of the present application, the description of the reference terms "one embodiment", "some embodiments", "exemplary embodiment", "example", "specific example", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present application. In the present application, the exemplary description of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described can be combined in any one or more embodiments or examples in a suitable manner.

[0075] Although the embodiments of the present application have been shown and described, those skilled in the art can understand that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and purposes of the present application, and the scope of the present application is defined by the claims and their equivalents.

Claims

1. A compressor, characterized in that, include: The housing portion has a receiving cavity inside, and an oil tank is provided at the bottom of the receiving cavity; The motor unit is installed in the receiving cavity. The motor unit includes a motor and a crankshaft. The crankshaft has a first oil supply channel extending axially and a second oil supply channel communicating with the first oil supply channel. The second oil supply channel extends to the motor to guide oil to the motor. The end of the crankshaft extends into the oil sump so that the first oil supply channel communicates with the oil sump. The pump body is installed in the receiving cavity and located below the motor part. The pump body includes a cylinder. The crankshaft cooperates with the piston in the cylinder to drive the piston to rotate eccentrically. The cylinder is provided with a first oil return channel that runs through it in the vertical direction. The first oil return channel has a circumferential opening located on the outer peripheral wall of the cylinder.

2. The compressor according to claim 1, characterized in that, In the radial direction of the crankshaft, the maximum depth of the first oil return channel is D, which satisfies: 20mm ≥ D ≥ 10mm.

3. The compressor according to claim 1, characterized in that, In the circumferential direction of the crankshaft, the central angle corresponding to the circumferential opening of the first oil return channel is α1, which satisfies: 60°≥α1≥10°.

4. The compressor according to claim 1, characterized in that, The first oil return channel is radially symmetrical about the crankshaft.

5. The compressor according to claim 1, characterized in that, The first oil return channel includes a first side wall and a connecting bottom wall arranged opposite to each other. The two ends of the connecting bottom wall are respectively connected to the first side wall. The first side wall is a plane or an arc-shaped surface, and the connecting bottom wall is a plane or an arc-shaped surface.

6. The compressor according to claim 5, characterized in that, The first sidewall and the connecting bottom wall have a circular arc transition.

7. The compressor according to claim 5, characterized in that, The first sidewall and the outer peripheral wall of the cylinder have a circular arc transition.

8. The compressor according to any one of claims 1-7, characterized in that, The cylinder also includes a second oil return channel. The first oil return channel and the second oil return channel are arranged circumferentially apart from each other along the cylinder. The second oil return channel penetrates the cylinder in the vertical direction, and the peripheral wall of the cross-section of the second oil return channel is a closed ring.

9. The compressor according to claim 8, characterized in that, In the circumferential direction of the cylinder, the minimum distance between two adjacent passages in the first and second oil return channels is greater than or equal to 3 mm.

10. The compressor according to claim 8, characterized in that, There are multiple first oil return channels and multiple second oil return channels, with at least one second oil return channel between adjacent first oil return channels.

11. An air conditioner, characterized in that, Includes the compressor according to any one of claims 1-10.

12. A vehicle, characterized in that, include: The air conditioner according to claim 11; Alternatively, the compressor according to any one of claims 1-10.

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