Compressor and vehicle

Abstract

The invention provides a compressor and a vehicle. The compressor comprises a machine shell and a compressor body, the compression component is arranged in the cavity and comprises an air cylinder, a main bearing, an auxiliary bearing and a crankshaft, the main bearing and the auxiliary bearing are arranged at the two ends of the air cylinder, and the two ends of the crankshaft penetrate out of the main bearing and the auxiliary bearing respectively; the oil separation part comprises a first shell, an oil separator and a third shell, and the first shell, the auxiliary bearing and the third shell define a first cavity; the oil separator comprises a second shell provided with a second cavity and an oil separation insertion pipe arranged in the second cavity, the second shell is arranged on the outer surface of the first shell, the second cavity is communicated with the first cavity and the cavity of the machine shell, and compressed refrigerants enter the oil separator from the first cavity to be subjected to oil-gas separation and then are discharged out of the machine shell; the third shell is arranged in the first cavity, the third shell and the auxiliary bearing are matched to form a third cavity, and the end, close to the auxiliary bearing, of the crankshaft is sealed in the third cavity. The compressor provided by the invention is low in oil yield and high in working efficiency.

Description

Technical Field

[0001] The present invention relates to the technical field of compressors, and in particular to a compressor and a vehicle. Background Art

[0002] The performance and reliability of the compressor play a very important role in the overall performance of the air conditioning system. When the compressor is working, the lubricating oil in the oil pool passes through the oil pipeline to the gaps between the bearings and sliding parts for lubrication. After the lubricating oil is dispersed, it forms an oil-gas mixture with the flowing high-temperature and high-pressure refrigerant gas and is discharged from the compressor. When the exhaust oil content of the compressor is too high, the lubricating oil enters the system, which will affect the heat exchange effect of the two devices (evaporator and condenser) and reduce the performance of the system. In addition, the excessive exhaust oil content is not conducive to oil return and is likely to affect the reliability of the compressor.

[0003] Rotary compressors generally separate lubricating oil from refrigerant by using the centrifugal force provided by the rotating stirring of the motor rotor and the large buffer space on the top of the motor to reduce the flow rate of the exhaust refrigerant. The rotary compressors used in automotive air conditioners use high-temperature and high-density refrigerants, and the existing oil-gas separation methods cannot meet the oil-gas separation effect. At the same time, when the crankshaft of the existing automotive rotary compressor is provided with a hollow through hole, the compressed high-pressure refrigerant is easy to flow to the low-pressure housing where the crankshaft is located, affecting the performance of the compressor. Therefore, it is necessary to improve the existing automotive compressors in view of the above problems. Summary of the invention

[0004] In view of the problems in the prior art, an object of the present invention is to provide a compressor and a vehicle, thereby reducing the oil output rate of the compressor and improving the performance of the compressor.

[0005] An embodiment of the present invention provides a compressor, comprising:

[0006] a casing having a cavity therein;

[0007] A compression component is arranged in the cavity, and the compression component includes a cylinder, a main bearing, a secondary bearing and a crankshaft, wherein the main bearing and the secondary bearing are respectively arranged at two ends of the cylinder, and the main bearing and the secondary bearing are respectively passed through two ends of the crankshaft;

[0008] An oil separation component is arranged on the side of the auxiliary bearing away from the cylinder; the oil separation component includes a first shell, an oil separator and a third shell, the third shell is fixed in the first shell, and the first shell, the auxiliary bearing and the third shell are surrounded to form a first chamber; the oil separator includes a second shell and an oil separation tube, the second shell is arranged on the outer surface of the first shell, and the second shell includes a second chamber inside, the second chamber is connected with the first chamber and the cavity of the casing, the oil separation tube is arranged in the second chamber, the refrigerant compressed in the cylinder enters the first shell, enters the second chamber through the first chamber exhaust port on the first shell, and then is discharged from the second shell after oil and gas separation through the oil separation tube; the auxiliary bearing extends into the third shell, cooperates with the auxiliary bearing to form a third chamber, and the end of the crankshaft close to the auxiliary bearing is sealed in the third chamber.

[0009] In some embodiments, a space is left between an end of the third housing and the secondary bearing.

[0010] In some embodiments, the inner wall of the first shell extends toward the center to form a plurality of protrusions, and every two of the protrusions and the third shell form a sub-chamber. The plurality of sub-chambers are interconnected, and the first chamber exhaust port is opened on one of the sub-chambers.

[0011] In some embodiments, an outer wall of the third shell is connected to the protrusion.

[0012] In some embodiments, the third shell is coaxially arranged with the first shell.

[0013] In some embodiments, a spiral fin is provided on the outer wall of the oil separation tube, and a gap is provided between the fin and the inner wall of the second chamber.

[0014] In some embodiments, the axis of the oil separation cannula is parallel to the axis of the second chamber.

[0015] In some embodiments, on the plane where the rotation axis of the crankshaft is located, the angle between the orthographic projection of the central axis of the second housing and the orthographic projection of the rotation axis of the crankshaft is a right angle, and the central axis of the third housing is collinear with the orthographic projection of the rotation axis of the crankshaft.

[0016] In some embodiments, the second shell is provided with an air inlet, an air outlet and an oil drain port; the air inlet is provided on the second shell and is communicated with the exhaust port of the first chamber; the oil separation pipe is connected to and communicated with the exhaust port, and the exhaust port and the oil drain port are arranged in opposite directions along the extension direction of the oil separation pipe.

[0017] In some embodiments, the air inlet is located between the air outlet and the oil outlet, close to the air outlet, and the length of the oil distribution pipe is greater than the length of the air inlet.

[0018] In some embodiments, the volume of the second chamber is smaller than that of the first chamber, and the volume of the third chamber is smaller than that of the second chamber.

[0019] In some embodiments, a sealing groove and a sealing element disposed in the sealing groove are disposed on the circumference of the third housing and / or the secondary bearing.

[0020] In some embodiments, a secondary bearing exhaust port is provided on the secondary bearing, and the secondary bearing exhaust port is connected to the cylinder and the first chamber respectively.

[0021] In some embodiments, an intermediate shell is further provided on the side of the main bearing facing away from the cylinder, and the main bearing and the intermediate shell together form a fourth chamber. A main bearing exhaust port is provided on the main bearing, and the main bearing exhaust port is respectively connected to the cylinder and the fourth chamber. The compressor assembly also includes a refrigerant flow hole, and the refrigerant flow hole passes through the main bearing, the cylinder and the auxiliary bearing, and the refrigerant flow hole connects the first chamber with the fourth chamber.

[0022] An embodiment of the present invention further provides a vehicle, comprising a compressor as described in any one of the above items.

[0023] The compressor and vehicle provided by the present invention have the following advantages:

[0024] The compressed refrigerant enters the first chamber for rectification and noise reduction, and the first shell plays a silencing role to reduce the exhaust noise of the compressor; the second shell is arranged on the outer surface of the first shell, and the second chamber of the second shell is provided with an oil separation tube. The compressed refrigerant enters the second chamber through the first chamber and is separated from oil and gas through the oil separation tube. The separated lubricating oil falls back into the oil pool of the compressor, and the separated refrigerant is discharged into the cavity of the casing, and then further discharged outside the casing to participate in the heat exchange cycle. Oil and gas separation through the oil separation tube in the second chamber can reduce the oil output rate of the compressor and improve the performance of the compressor; the third shell can seal the short shaft end of the crankshaft to prevent the compressed high-pressure refrigerant from flowing to the low-pressure casing where the crankshaft is located, thereby further improving the performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Other features, objectives and advantages of the present invention will become more apparent from a reading of the detailed description of non-limiting embodiments made with reference to the following accompanying drawings.

[0026] Figure 1 is a schematic diagram of a compressor provided by an embodiment of the present invention cut along the YZ plane;

[0027] Figure 2 is a three-dimensional schematic diagram of a compression component of a compressor according to an embodiment of the present invention;

[0028] Figure 3 is a cross-sectional view of a compression component provided by an embodiment of the present invention cut along an XZ plane;

[0029] Figure 4 is a cross-sectional view of a compression component provided by an embodiment of the present invention cut along an XZ plane;

[0030] Figure 5 is a schematic diagram of a first shell and a second shell provided in an embodiment of the present invention on an XY plane;

[0031] Figure 6 is a schematic diagram of a first shell and a third shell provided by an embodiment of the present invention;

[0032] Figure 7 is a cross-sectional view of a first shell, a second shell and a third shell provided in an embodiment of the present invention on an XZ plane;

[0033] Figure 8 is a schematic cross-sectional view of an oil separator provided by an embodiment of the present invention cut along an XY plane;

[0034] Fig. 9 It is a cross-sectional view of a first shell and a second shell provided by an embodiment of the present invention cut along the XZ axial direction.

[0035] Reference numerals:

[0036] 10 Casing 32 Oil separator

[0037] 11 Low pressure shell 321 Second shell

[0038] 12 High pressure shell 3211 second chamber

[0039] 13 Intermediate shell 321a Air inlet

[0040] 131 Fourth chamber 321b Exhaust port

[0041] 21 Cylinder 321c Oil drain port

[0042] 22 Main bearing 322 Oil distribution pipe

[0043] 23 Auxiliary bearing 322a Exhaust passage

[0044] 24 Crankshaft 3221 fin

[0045] 25 middle plate 33 third shell

[0046] 26 Piston 331 Third chamber

[0047] 30 Oil separation component 332 Sealing groove

[0048] 31 first shell 40 refrigerant flow hole

[0049] 311 First Chamber DETAILED DESCRIPTION

[0050] Example embodiments will now be described more fully with reference to the accompanying drawings. However, example embodiments can be implemented in a variety of forms and should not be construed as limited to the embodiments set forth herein; rather, these embodiments are provided so that the present invention will be comprehensive and complete and fully convey the concepts of the example embodiments to those skilled in the art. The same reference numerals in the figures represent the same or similar structures, and thus their repeated description will be omitted.

[0051] In addition, the terms "first" and "second" are used for descriptive purposes only and should not be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, a feature defined as "first" or "second" may explicitly or implicitly include at least one of the features. In the representation of this application, the meaning of "plurality" is two or more, unless otherwise clearly and specifically defined.

[0052] In order to solve the problems in the prior art, an embodiment of the present invention provides a compressor. Figures 1 to 9 As shown, the compressor comprises:

[0053] The housing 10 has a cavity therein;

[0054] The compression component is arranged in the cavity; the compression component includes a cylinder 21, a main bearing 22, a secondary bearing 23 and a crankshaft 24, the main bearing 22 and the secondary bearing 23 are respectively arranged at both ends of the cylinder 21, and the main bearing 22 and the secondary bearing 23 are respectively passed through the two ends of the crankshaft 24;

[0055] The oil separation component 30 is arranged on the side of the auxiliary bearing 23 away from the cylinder 21; the oil separation component 30 includes a first housing 31, an oil separator 32 and a third housing 33, the third housing 33 is fixed in the first housing 31, and the first housing 31, the auxiliary bearing 23 and the third housing 33 are surrounded to form a first chamber 311; the oil separator 32 includes a second housing 321 and an oil separation insert 322, the second housing 321 is arranged on the outer surface of the first housing 31, and the second housing 321 is provided with a second chamber 3211 inside, and the second chamber 3211 The oil separator pipe 322 is connected with the first chamber 311 and the cavity of the casing 10. The refrigerant compressed in the cylinder 21 enters the first shell 31, enters the second chamber 3211 through the first chamber exhaust port on the first shell 31, and is discharged from the second shell 321 after oil and gas separation through the oil separator pipe 322; the auxiliary bearing 23 extends into the third shell 33, and cooperates with the auxiliary bearing 23 to form a third chamber 331, and one end of the crankshaft 24 close to the auxiliary bearing 23 is sealed in the third chamber 331.

[0056] The compressed refrigerant enters the first chamber 311 for rectification and noise reduction, and the first shell 31 plays a silencing role to reduce the exhaust noise of the compressor; the oil separator 32 is arranged on the outer surface of the first shell 31, and the second chamber 3211 of the second shell 321 is provided with an oil separation pipe 322. The compressed refrigerant enters the second chamber 3211 through the first chamber 311 and is separated from oil and gas through the oil separation pipe 322. The separated lubricating oil falls back into the oil pool of the compressor, and the separated refrigerant is discharged into the cavity of the casing 10, and then further discharged outside the casing 10 to participate in the heat exchange cycle. The oil and gas separation through the oil separation pipe 322 in the second chamber 3211 can reduce the oil output rate of the compressor and improve the performance of the compressor; the third shell 33 can seal the short shaft end of the crankshaft 24 to prevent the compressed high-pressure refrigerant from flowing to the low-pressure casing where the crankshaft 24 is located, thereby further improving the performance of the compressor.

[0057] Furthermore, if Figure 1 As shown, in this embodiment, the casing 10 includes a low-pressure casing 11, a high-pressure casing 12 and a partition therebetween. The partition and the low-pressure casing 11 form a low-pressure chamber, and the partition and the high-pressure casing 12 form a high-pressure chamber. A driving motor is arranged in the low-pressure chamber, and a compression component is arranged in the high-pressure chamber. The low-pressure casing 11 is provided with a compressor suction port, and the high-pressure casing 12 is provided with a compressor exhaust port. The refrigerant discharged from the second casing 321 enters the high-pressure chamber and is discharged through the compressor exhaust port. In this embodiment, the partition is the intermediate casing 13. In other embodiments, the partition may also be the main bearing 22.

[0058] Furthermore, if Figure 3As shown, a gap is left between the end of the third shell 33 and the auxiliary bearing 23, which can increase the space of the first chamber 311 and improve the noise reduction effect; in other aspects, the compressed refrigerant partially hits the surface of the third shell 33 when discharged, forming a certain buffer for the high-pressure refrigerant, thereby improving the noise reduction and oil-gas separation effects.

[0059] Furthermore, if Figure 6 As shown, the inner wall of the first shell 31 extends toward the center to form a plurality of protrusions, and each two protrusions and the third shell 33 enclose a sub-chamber, and the plurality of sub-chambers are interconnected, and a first chamber exhaust port is provided on a sub-chamber. The first chamber 311 connected by a plurality of sub-chambers can improve the silencing and rectifying effect. Figure 6 As shown, the outer wall of the third housing 33 is connected to the protrusion, so that the third housing 33 and the protrusion can be easily assembled. Further, the third housing 33 and the first housing 31 are coaxially arranged.

[0060] Furthermore, if Figure 2 and Figure 8 As shown, in the embodiment of the present invention, a spiral fin 3221 is provided on the outer wall of the oil separation cannula 322, and a gap is provided between the fin 3221 and the inner wall of the second chamber 3211. The oil separation cannula 322 is a cylindrical barrel structure with a hollow interior, and the fin 3221 and the oil separation cannula 322 form a rotating separation channel for rotating the high-pressure gas downward. The oil-gas mixture rotates downward in a spiral along the rotating separation channel. After leaving the separation channel, the oil-gas mixture continues to rotate under the action of inertia. Due to the action of centrifugal force, the lubricating oil is separated from the high-pressure gas and accumulated on the wall surface of the second chamber 3211. The high-pressure gas is discharged from the second chamber 3211 through the exhaust channel 322a of the oil separation cannula 322. The lubricating oil flows to the oil discharge channel under the action of gravity and is discharged from the second chamber 3211. The fins 3221 guide the movement of the oil-gas mixture, causing the oil-gas mixture to flow in a spiral shape along the fins 3221, increasing the travel of the mixture, reducing the short-circuit flow of the oil separation insert 322, and improving the oil-gas separation effect. The oil separation insert 322 is not limited to the structure shown above.

[0061] like Figure 1 , Figure 2 , Figure 8 and Fig. 9 As shown, the axis of the oil separation tube 322 is parallel to the axis of the second chamber 3211, so that the oil-gas mixture flows smoothly in the second chamber 3211, thereby improving the oil-gas separation effect.

[0062] Furthermore, if Figures 1 to 4As shown, in the embodiment of the present invention, on the plane (YZ plane) where the rotation axis of the crankshaft 24 is located, the angle between the orthographic projection of the central axis of the second housing 321 and the orthographic projection of the rotation axis of the crankshaft 24 is a right angle, and the orthographic projection of the central axis of the third housing 33 and the rotation axis of the crankshaft 24 are collinear. That is, the central axis of the second housing 321 is perpendicular to the crankshaft 24; the third housing 33 is coaxial with the crankshaft 24.

[0063] Furthermore, the second housing 321 is arranged opposite to the end face of the secondary bearing 23. This arrangement can reduce the inner diameter of the compressor casing 10 without affecting the oil separation effect and occupying the volume of the silencer cavity, thereby improving space utilization. At the same time, under the premise of ensuring the performance of the compressor, the oil level of the small housing inner diameter can be maintained higher than that of the large housing inner diameter under the same lubricating oil filling amount and the same oil output rate, which can improve the reliability of the compressor and broaden the applicable working conditions of the compressor.

[0064] Further, such as Figure 8 As shown, the second housing 321 is provided with an air inlet 321a, an air outlet 321b and an oil outlet 321c, the air inlet 321a is connected to the first chamber air outlet; the oil distribution pipe 322 is connected to the air outlet 321b and is connected thereto, and the air outlet 321b and the oil outlet 321c are arranged in opposite directions along the extension direction of the oil distribution pipe 322 (here, along the X direction). Figure 1 and Figure 8 As shown, the compressor is a horizontal compressor, where the exhaust port 321b faces upward and the oil discharge port 321c faces downward. The refrigerant enters the second chamber 3211 from the air inlet 321a, and is separated from oil and gas through the rotating channel formed by the fins 3221 on the oil separation insert 322. The separated refrigerant moves upward and is discharged from the exhaust port 321b, and the separated lubricating oil moves downward and enters the oil pool of the compressor from the oil discharge port 321c.

[0065] Furthermore, in the embodiment of the present invention, the volume of the second chamber 3211 is smaller than that of the first chamber 311 , and the volume of the third chamber 331 is smaller than that of the second chamber 3211 .

[0066] Furthermore, the side of the casing 10 close to the auxiliary bearing 23 is a spherical or cylindrical thick-walled pressure-resistant structure, which can reduce the weight of the compressor casing. Figure 1 As shown, the high pressure housing 12 is spherical.

[0067] like Figure 8 and Fig. 9As shown, in the embodiment of the present invention, the air inlet 321a is located between the exhaust port 321b and the oil drain port 321c, close to the exhaust port 321b, and the length of the oil separation pipe 322 is greater than the length of the air inlet 321a, which is used to provide sufficient separation stroke for the refrigerant to improve the oil-gas separation rate.

[0068] Furthermore, in this embodiment, a secondary bearing exhaust port is provided on the secondary bearing 23, and the secondary bearing exhaust port is respectively connected to the cylinder 21 and the first chamber 311. The secondary bearing exhaust port and the exhaust port of the first chamber 311 are staggered in their projection positions on a horizontal plane perpendicular to the crankshaft 24.

[0069] Furthermore, if Figures 1 to 4 As shown, in the embodiment of the present invention, the intermediate housing 13 is arranged on the side of the main bearing 22 away from the cylinder 21, and the main bearing 22 and the intermediate housing 13 are enclosed to form a fourth chamber 131. The main bearing 22 is provided with a main bearing exhaust port, and the exhaust port of the main bearing 22 is connected to the cylinder 21 and the fourth chamber 131 respectively. The compression assembly also includes a refrigerant flow hole 40, and the refrigerant flow hole 40 passes through the main bearing 22, the cylinder 21 and the auxiliary bearing 23. The refrigerant flow hole 240 connects the first chamber 311 with the fourth chamber 131. Furthermore, the projection positions of the refrigerant flow hole 240 and the exhaust port of the first chamber 311 on the horizontal plane perpendicular to the crankshaft 24 are staggered. As shown in FIG. Figures 1 to 4 As shown, the compression component 20 provided in the embodiment of the present invention includes two cylinders 21, an intermediate plate 25 is provided between the two cylinders 21, and the piston 26 in each cylinder 21 moves to change the volume of the cylinder 21, thereby compressing the refrigerant, and the compressed refrigerant is discharged from the cylinder 21 through the exhaust port on the main bearing 22 and the exhaust port on the auxiliary bearing 23 respectively.

[0070] like Figure 1 and Figure 2 As shown, the refrigerant discharged from the exhaust port of the main bearing 22 will first enter the fourth chamber 131 for rectification and noise reduction, and then enter the first chamber 311 and the second chamber 3211 from the refrigerant flow hole 40 connecting the fourth chamber 131 and the first chamber 311 to complete oil and gas separation, and finally be discharged to the outside of the casing 10.

[0071] Furthermore, a sealing groove 332 and a sealing element (not shown in the figure) disposed in the sealing groove 332 are disposed on the circumference of the third housing 33 and / or the auxiliary bearing 23 to seal the third chamber 331, that is, the third chamber 331 is not connected to the first chamber 311 and the second chamber 3211. The sealed third chamber 331 separates the low pressure gas connected to the central through hole of the crankshaft 24 from the high pressure gas discharged by the compressor, thereby achieving the separation of high and low pressures and maintaining the stability of the oil level. The third housing 33 is disposed on the inner surface of the first housing 31. Compared with the prior art in which the diameter of the auxiliary bearing 23 is fixed to the casing 10 of the compressor, the axial extension of the diameter of the auxiliary bearing 23 can be reduced, and the chamber volume of the first housing 31 can also be increased axially according to noise requirements.

[0072] Based on the above introduction, the specific working process of the compressor during operation is introduced below.

[0073] When the compressor operates normally, the motor component applies torque to the crankshaft 24, thereby sucking low-pressure refrigerant from the outside of the casing 10 into the cylinder 21, and compressing the low-pressure refrigerant into high-pressure refrigerant. Part of the high-pressure refrigerant is discharged through the exhaust port of the main bearing 22 and enters the fourth chamber 131. Since the volume of the fourth chamber 131 is large, the rectification and noise reduction of the airflow can be achieved; the high-pressure refrigerant discharged from the exhaust port of the auxiliary bearing 23 enters the first chamber 311 of the oil separation component 30. Since the volume of the first chamber 311 is large, the rectification and noise reduction of the airflow can be achieved. The high-pressure refrigerant in the fourth chamber 131 enters the first chamber 311 through the refrigerant flow hole 40, mixes with the high-pressure refrigerant there, and then enters the second chamber 3211 through the air inlet 321a, and then the high-pressure refrigerant can flow around along the spiral fin 3221 to achieve gas-liquid separation, and the separated gaseous refrigerant is discharged from the second shell 321 through the exhaust channel 322a from the exhaust port 321b, and the separated lubricating oil enters the compressor oil pool from the oil discharge port 321c through the oil discharge channel. Since a sealing element is provided inside the third shell 33 of the oil separation component 30, the third chamber 331 is not connected with the first chamber 311 and the second chamber 3211, so the discharged high-pressure refrigerant will not flow to the low-pressure shell where the crankshaft 24 is located, so that the separation of high and low pressures is achieved, and the performance of the compressor is guaranteed.

[0074] The compressor provided by the present invention is suitable for a refrigeration system, such as an air conditioner.

[0075] The embodiment of the present invention further provides a vehicle, comprising the compressor as described above. Therefore, the vehicle provided by the embodiment of the present invention has the technical effect of the compressor as described above, which will not be described in detail here.

[0076] In summary, the compressor and vehicle provided by the present invention have the following advantages:

[0077] The compressed refrigerant enters the first chamber for rectification and noise reduction, and the first shell plays a silencing role to reduce the exhaust noise of the compressor; the second shell is arranged on the outer surface of the first shell, and the second chamber of the second shell is provided with an oil separation tube. The compressed refrigerant enters the second chamber through the first chamber and is separated from oil and gas through the oil separation tube. The separated lubricating oil falls back into the oil pool of the compressor, and the separated refrigerant is discharged into the cavity of the casing, and then further discharged outside the casing to participate in the heat exchange cycle. Oil and gas separation through the oil separation tube in the second chamber can reduce the oil output rate of the compressor and improve the performance of the compressor; the third shell can seal the short shaft end of the crankshaft to prevent the compressed high-pressure refrigerant from flowing to the low-pressure casing where the crankshaft is located, thereby further improving the performance of the compressor.

[0078] The above contents are further detailed descriptions of the present invention in combination with specific preferred embodiments, and it cannot be determined that the specific implementation of the present invention is limited to these descriptions. For ordinary technicians in the technical field to which the present invention belongs, several simple deductions or substitutions can be made without departing from the concept of the present invention, which should be regarded as falling within the protection scope of the present invention.

Claims

1. A compressor, characterized in that: include: a casing having a cavity therein; A compression component is arranged in the cavity, and the compression component includes a cylinder, a main bearing, a secondary bearing and a crankshaft, wherein the main bearing and the secondary bearing are respectively arranged at two ends of the cylinder, and the main bearing and the secondary bearing are respectively passed through two ends of the crankshaft; An oil separation component is arranged on the side of the auxiliary bearing away from the cylinder; the oil separation component includes a first shell, an oil separator and a third shell, the third shell is fixed in the first shell, and the first shell, the auxiliary bearing and the third shell are surrounded to form a first chamber; the oil separator includes a second shell and an oil separation tube, the second shell is arranged on the outer surface of the first shell, and the interior of the second shell includes a second chamber, the second chamber is connected with the first chamber and the cavity of the casing, the oil separation tube is arranged in the second chamber, the refrigerant compressed in the cylinder enters the first shell, enters the second chamber through the first chamber exhaust port on the first shell, and then is discharged from the second shell after oil and gas separation through the oil separation tube; the auxiliary bearing extends into the third shell, cooperates with the auxiliary bearing to form a third chamber, and the end of the crankshaft close to the auxiliary bearing is sealed in the third chamber.

2. The compressor according to claim 1, characterized in that A space is left between the end of the third housing and the auxiliary bearing.

3. The compressor according to claim 1 or 2, characterized in that: The inner wall of the first shell extends toward the center to form a plurality of protrusions, and every two of the protrusions and the third shell form a sub-chamber. The plurality of sub-chambers are interconnected, and one of the sub-chambers is provided with the first chamber exhaust port.

4. The compressor according to claim 3, characterized in that The outer wall of the third shell is connected to the protrusion.

5. The compressor according to claim 1, characterized in that The third shell is coaxially arranged with the first shell.

6. The compressor according to claim 1, characterized in that The outer wall of the oil separation insert is provided with a spiral fin, and a gap is provided between the fin and the inner wall of the second chamber.

7. The compressor according to claim 1 or 6, characterized in that: The axis of the oil separation cannula is parallel to the axis of the second chamber.

8. The compressor according to claim 1, characterized in that On the plane where the rotation axis of the crankshaft is located, the angle between the orthographic projection of the central axis of the second housing and the orthographic projection of the rotation axis of the crankshaft is a right angle, and the central axis of the third housing and the orthographic projection of the rotation axis of the crankshaft are collinear.

9. The compressor according to claim 1, characterized in that The second shell is provided with an air inlet, an air outlet and an oil outlet; the air inlet is provided on the second shell and is communicated with the air outlet of the first chamber; the oil distribution pipe is connected to and communicated with the air outlet, and the air outlet and the oil outlet are arranged in opposite directions along the extension direction of the oil distribution pipe.

10. The compressor according to claim 9, characterized in that The air inlet is located between the air outlet and the oil outlet and close to the air outlet, and the length of the oil distribution pipe is greater than the length of the air inlet.

11. The compressor according to claim 1, characterized in that The volume of the second chamber is smaller than that of the first chamber, and the volume of the third chamber is smaller than that of the second chamber.

12. The compressor according to claim 1, characterized in that A sealing groove and a sealing element arranged in the sealing groove are provided in the circumference of the third housing and / or the auxiliary bearing.

13. The compressor according to claim 1, characterized in that The auxiliary bearing is provided with an auxiliary bearing exhaust port, and the auxiliary bearing exhaust port is connected to the cylinder and the first chamber respectively.

14. The compressor according to claim 1 or 13, characterized in that: An intermediate shell is also provided on the side of the main bearing away from the cylinder, and the main bearing and the intermediate shell together form a fourth chamber. A main bearing exhaust port is provided on the main bearing, and the main bearing exhaust port is respectively connected to the cylinder and the fourth chamber. The compression component also includes a refrigerant flow hole, and the refrigerant flow hole passes through the main bearing, the cylinder and the auxiliary bearing, and the refrigerant flow hole connects the first chamber with the fourth chamber.

15. A vehicle, characterized in that: Comprising a compressor as claimed in any one of claims 1 to 14.

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