Rotor compressor and vehicle

Abstract

The rotor compressor comprises a shell, a middle shell, a motor and a pump body assembly, an oil pool is arranged at the bottom of a high-pressure cavity, the pump body assembly comprises an air cylinder, a main bearing, an auxiliary bearing and a crankshaft, and the main bearing and the auxiliary bearing are connected to the two sides of the air cylinder; one end of the crankshaft is connected with a rotor of the motor, and the other end sequentially penetrates through the main bearing, the cylinder and the auxiliary bearing; a blade groove is formed in the side wall of the air cylinder, a blade capable of doing reciprocating motion is arranged in the blade groove, and one end of the blade abuts against the periphery of the piston. An oil inlet hole is formed in the main bearing and / or the auxiliary bearing; and the oil inlet hole comprises an inlet communicated with the blade groove and an outlet communicated with a central through hole of the oil inlet hole. The invention further provides a vehicle which comprises the rotor compressor. The compressor has the beneficial effects that through the reciprocating motion of the blades, the oil inlet holes in the main bearing and / or the auxiliary bearing intermittently suck oil from the oil pool and supply the oil to the pump body assembly for lubrication, and the running reliability of the compressor is guaranteed.

Description

Technical Field

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

[0002] In automotive high-low back-pressure rotor compressors, the pressure difference between the high-pressure side and the low-pressure side of the compressor is used to make the refrigeration oil flow from the high-pressure side to the low-pressure side, and lubricate the friction pair during the oil supply process. However, the return oil volume from the low-pressure side to the high-pressure side is lower than the oil supply volume, and the refrigeration oil is more likely to accumulate on the low-pressure side, causing problems such as lack of oil on the high-pressure side and abnormal wear of the friction pair, thereby affecting the reliable and stable operation of the compressor. Summary of the invention

[0003] The object of the present invention is to provide a rotor compressor which can allow refrigeration oil to intermittently enter the pump body assembly, thereby reducing the amount of oil flowing from the high-pressure side to the low-pressure side, so as to solve the problems existing in the prior art.

[0004] The present invention provides a rotary compressor, comprising a housing, an intermediate housing for dividing a cavity in the housing into a low-pressure cavity and a high-pressure cavity, a motor arranged in the low-pressure cavity, and a pump body assembly, wherein the pump body assembly comprises a cylinder arranged in the high-pressure cavity, a main bearing and a secondary bearing connected to both sides of the cylinder, and a crankshaft with two ends respectively located in the low-pressure cavity and the high-pressure cavity, an oil pool is provided at the bottom of the high-pressure cavity, and the main bearing is penetrated in the intermediate housing; one end of the crankshaft is connected to the rotor of the motor, and the other end passes through the main bearing, the cylinder and the secondary bearing in sequence, and is used to drive the cylinder The piston rotates eccentrically; a blade groove is provided on the side wall of the cylinder, a blade that can reciprocate is provided in the blade groove, and one end of the blade abuts against the outer periphery of the piston; an oil inlet hole is provided on the main bearing and / or the auxiliary bearing, and the oil inlet hole includes an inlet connected to the blade groove and an outlet connected to its own central through hole; when the piston rotates eccentrically and drives the blade to reciprocate in the blade groove, the blade intermittently opens and closes the inlet; when the inlet is opened, the refrigeration oil in the oil pool lubricates the pump body assembly through the blade groove, the oil inlet hole and the central through hole.

[0005] Preferably, when the inlet is closed, the overlapping area between the blade and the inlet on the cross section of the cylinder is not less than 70% of the inlet area.

[0006] Preferably, the oil inlet hole comprises a first section and a second section which are vertically connected, the inlet is arranged at one end of the first section, and the outlet is arranged at one end of the second section.

[0007] Preferably, the second section is a blind hole.

[0008] Preferably, the second section is a through hole, the other end of which is blocked.

[0009] Preferably, a muffler is provided on the secondary bearing, and a closed space is formed between the two.

[0010] Preferably, an axial hole is further provided in the crankshaft, and the axial hole is used to connect the low-pressure chamber and the enclosed space.

[0011] Preferably, at least one of the main bearing, the auxiliary bearing and the piston and / or the crankshaft is provided with an oil groove.

[0012] Preferably, a spring groove connected to the blade groove is further provided on the side wall of the cylinder, a spring connected to the blade is installed in the spring groove, and the spring groove is used to connect the blade groove with the oil pool.

[0013] The present invention also provides a vehicle, comprising the aforementioned rotary compressor.

[0014] The benefit of the present invention is that, through the reciprocating motion of the blades, the oil inlet holes on the main bearing and / or the auxiliary bearing intermittently suck oil from the oil pool to the pump body assembly for lubrication, ensuring that all components are fully lubricated during the operation of the compressor, thereby ensuring the reliability of the operation of the compressor. The rotary compressor of the present invention has high overall reliability and a simple manufacturing process, without the need to add additional parts. At the same time, the oil inlet holes on the main bearing and / or the auxiliary bearing can also achieve the effect of reducing weight and cost. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 is a cross-sectional view of a rotor compressor of Embodiment 1;

[0016] Figure 2 is a cross-sectional view of the pump body assembly in the first embodiment;

[0017] Figure 3 is a three-dimensional diagram of the main bearing in the first embodiment;

[0018] Figure 4 (a) and 4(b) are cross-sectional views of two structures of the main bearing in the first embodiment;

[0019] Figure 5 is a schematic diagram of the blade opening the oil inlet inlet of the main bearing in the first embodiment;

[0020] Figure 6 is a schematic diagram of the blade closing the oil inlet inlet of the main bearing in the first embodiment;

[0021] Figure 7 is a cross-sectional view of the rotor compressor of Embodiment 2;

[0022] Figure 8is a cross-sectional view of the pump assembly in the second embodiment;

[0023] Fig. 9 A three-dimensional diagram of the auxiliary bearing in the second embodiment;

[0024] Fig.10 (a) and 10(b) are cross-sectional views of two structures of the auxiliary bearing in the second embodiment;

[0025] Fig.11 is a schematic diagram of the blade opening the oil inlet inlet on the secondary bearing in the second embodiment;

[0026] Fig.12 is a schematic diagram of the blade closing the oil inlet hole on the secondary bearing in the second embodiment;

[0027] Component number description:

[0028] 1 Housing

[0029] 11 Motor housing

[0030] 12 Pump housing

[0031] 13 Intermediate housing

[0032] 14 Low pressure chamber

[0033] 15 High pressure chamber

[0034] 2 Crankshaft

[0035] 21 Shaft hole

[0036] 3 Main bearing

[0037] 31. Paragraph 1

[0038] 311 First Entrance

[0039] 32 Second paragraph

[0040] 321 Exit 1

[0041] 33 First center through hole

[0042] 4 pairs of bearings

[0043] 41 Paragraph 1

[0044] 411 Second Entrance

[0045] 42 Second paragraph

[0046] 421 Second Exit

[0047] 43 Second center through hole

[0048] 5. Motor

[0049] 6 Cylinders

[0050] 61 Cylinder Block

[0051] 62 Piston

[0052] 63 blade slot

[0053] 64 Spring slot

[0054] 7 blades

[0055] 8 Oil pool

[0056] 9. Silencer

[0057] 100 Partition DETAILED DESCRIPTION

[0058] The specific embodiments of the present invention are further described in detail below in conjunction with the accompanying drawings. These embodiments are only used to illustrate the present invention, but not to limit the present invention.

[0059] In the description of the present invention, it should be noted that the directions or positional relationships indicated by the terms "center", "upper", "lower", "front", "back", "left", "right", "top", "bottom", "inside", "outside", etc. are based on the directions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0060] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a direct connection, or an indirect connection through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0061] Figure 1 FIG. 1 is a cross-sectional view of a rotary compressor of Embodiment 1. In the following description, Figure 1 The attached figure in the figure is used as a reference for the direction. Figure 1 In the figure, the front direction is perpendicular to the viewing paper and facing outward, the rear direction is perpendicular to the viewing paper and facing inward, the upward direction is along the viewing paper and facing downward is along the viewing paper, the right direction is along the viewing paper and facing left is along the viewing paper.

[0062] Embodiment 1

[0063] like Figure 1 and Figure 2 As shown, the first embodiment provides a rotary compressor, which includes a housing 1, an intermediate housing 13, a motor 5 and a pump body assembly.

[0064] The housing 1 has a cavity inside, and the intermediate housing 13 divides the internal cavity of the housing 1 into a low-pressure cavity 14 and a high-pressure cavity 15. Preferably, the housing 1 includes a motor housing 11 and a pump housing 12 arranged horizontally on the left and right, and the motor housing 11 and the pump housing 12 are both hollow structures inside. The intermediate housing 13 is arranged between the motor housing 11 and the pump housing 12, and is fixedly connected to the two. The low-pressure cavity 14 is surrounded by the intermediate housing 13 and the motor housing 11, and the high-pressure cavity 15 is surrounded by the intermediate housing 13 and the pump housing 12. An oil pool 8 is provided at the bottom of the high-pressure cavity 15.

[0065] The pump body assembly includes a cylinder 6 disposed in a high-pressure chamber 15, a main bearing 3 connected to the left end face of the cylinder 6, a secondary bearing 4 connected to the right end face of the cylinder 6, and a crankshaft 2 whose two ends are respectively located in a low-pressure chamber 14 and a high-pressure chamber 15. The cylinder 6 includes a hollow cylinder body 61 and a piston 62 located in the cylinder body 61. The main bearing 3 is arranged in the intermediate housing 13, and one end side surface thereof is located in the high-pressure chamber 15, and the other end side surface is located in the low-pressure chamber 14. The crankshaft 2 is supported by the main bearing 3 and the secondary bearing 4, and the crankshaft 2 passes through the intermediate housing 13, so that the two ends of the crankshaft 2 are respectively located in the low-pressure chamber 14 and the high-pressure chamber 15. An eccentric portion is provided at one end of the crankshaft 2 located in the high-pressure chamber 15, and the piston 62 of the cylinder 6 is sleeved on the eccentric portion. The other end of the crankshaft 2 located in the low-pressure chamber 14 is connected to the motor 5. The motor 5 is located in the low-pressure chamber 14 and is fixedly mounted on the housing 1 (motor housing 11), and the rotor of the motor 5 drives the crankshaft 2 to rotate. The low-pressure chamber 14 is provided with an air inlet for introducing low-pressure gas into the low-pressure chamber 14. The intermediate housing 13 and the cylinder 6 are provided with an air passage connecting the low-pressure chamber 14 with the inside of the cylinder 6, which is used to introduce the low-pressure gas in the low-pressure chamber 14 into the inside of the cylinder 6. The crankshaft 2 is driven to rotate by the motor 5, which drives the eccentric part and the piston 62 to rotate eccentrically inside the cylinder 6, and the gas inside the cylinder 6 can be compressed to obtain high-pressure gas with increased pressure. The high-pressure gas is discharged into the high-pressure chamber 15 through the air outlet on the cylinder 6. Therefore, the air pressure in the high-pressure chamber 15 is greater than the air pressure in the low-pressure chamber 14, forming a pressure difference. The high-pressure chamber 15 is provided with an exhaust port for discharging the high-pressure gas in the high-pressure chamber 15.

[0066] A silencer 9 is sealed and connected to one end face of the auxiliary bearing 4, and a closed space that is not connected to the high-pressure chamber 15 is formed between the auxiliary bearing 4 and the silencer 9. A shaft hole 21 is also provided in the crankshaft 2, and the shaft hole 21 is used to connect the low-pressure chamber 14 and the closed space. Preferably, the shaft hole 21 can be a through hole that passes through the left and right, or it can be a blind hole, and one end of the blind hole located in the low-pressure chamber 14 is connected to the oil outlet hole provided on the side wall of the crankshaft 2.

[0067] A vane groove 63 and a spring groove 64 connected to the vane groove 63 are provided on the side wall of the cylinder body 61. A vane 7 is provided in the vane groove 63. The upper end of the vane 7 abuts against the outer periphery of the piston 62, and the lower end is connected to a spring (not shown) provided in the spring groove 64. The spring groove 64 is located in the oil pool 8 and is used to connect the oil pool 8 with the vane groove 63. The refrigeration oil in the oil pool 8 can enter the vane groove 63 through the spring groove 64.

[0068] like Figure 1-3 , Figure 5-6 As shown, in order to fully lubricate the pump assembly, the first embodiment is provided with a first oil inlet hole on the main bearing 3, and the first oil inlet hole includes a first inlet 311 connected to the blade groove 63 and a first outlet 321 connected to the first central through hole 33 of the main bearing 3. The crankshaft 2 is disposed in the first central through hole 33.

[0069] When the motor 5 is working, it drives the piston 62 to rotate eccentrically in the cylinder body 61 through the crankshaft 2, and the blade 7 reciprocates up and down in the blade groove 63 under the pressure of the piston 62 and the elasticity of the spring, and the blade 7 intermittently opens and closes the first inlet 311. When the first inlet 311 is opened, due to the pressure difference between the high-pressure chamber 15 and the low-pressure chamber 14, the refrigeration oil in the oil pool 8 is sucked into the first central through hole 33 through the blade groove 63, the first inlet 311, and the first outlet 321 to lubricate the pump body assembly.

[0070] Specifically, when the blade 7 moves upward, the blade 7 allows the first inlet 311 to be exposed, the first inlet 311 is opened, and the refrigeration oil in the oil pool 8 enters the first inlet 311 through the spring groove 64 and the blade groove 63, and flows from the first outlet 321 to the first central through hole 33 of the main bearing 3, part of the refrigeration oil lubricates the main bearing 3 and the cylinder body 61 and the piston 62 along the first central through hole 33; part of the refrigeration oil lubricates the auxiliary bearing 4 and the cylinder body 61 and the piston 62, and the refrigeration oil flowing into the enclosed space flows into the low-pressure chamber 14 through the shaft hole 21 of the crankshaft 2. The refrigeration oil flowing into the low-pressure chamber 14 returns to the high-pressure chamber 15 along the gas in the low-pressure chamber 14 through the gas path and the oil-gas separation structure and converges into the oil pool 8. When the blade 7 moves downward, the blade 7 covers the first inlet 311, the first inlet 311 is closed, and the oil inlet to the pump assembly stops. Preferably, when the blade 7 closes the first inlet 311 , in the cross section of the cylinder 6 , the overlapping area of ​​the blade 7 and the first inlet 311 is not less than 70% of the area of ​​the first inlet 311 .

[0071] During the process of the blade 7 intermittently opening and closing the first inlet 311 on the main bearing 3 in Example 1, the refrigeration oil intermittently enters the compressor from the oil pool 8 to lubricate the pump body assembly, reducing the amount of oil flowing from the high-pressure chamber 15 to the low-pressure chamber 14, solving the problem of refrigeration oil accumulation in the low-pressure chamber and difficulty in returning to the high-pressure chamber in the prior art, ensuring sufficient lubrication of various components during the operation of the compressor, thereby ensuring the reliability of the compressor operation.

[0072] like Figure 2-4 As shown, the first oil inlet hole on the main bearing 3 includes a first section 31 and a second section 32 which are vertically connected. The extension direction of the first section 31 is parallel to the axial direction of the crankshaft 2 and the main bearing 3 (i.e., the left-right direction). The first inlet 311 is arranged at the right end of the first section 31 and is opened on the side surface of the main bearing 3 close to the cylinder 6 (i.e., the right side surface); the second section 32 extends along the radial direction of the main bearing 3, and the first outlet 321 is arranged at the upper end of the second section 32. The second section 32 can be as follows Figure 4 (a) as shown in the blind hole, or as shown in Figure 4 (b) The through hole with the lower end blocked can prevent the refrigerator oil from directly entering the first oil inlet hole through the second section 32.

[0073] The cross-sectional shape of the first oil inlet hole is not limited and can be any shape such as circular, rectangular, elliptical, irregular, etc. The setting position of the first inlet 311 is adapted to the cylinder 6 of different models, but is not completely fixed.

[0074] In the first embodiment, the rotary compressor is a single-cylinder compressor or a multi-cylinder compressor, and the number of cylinders 6 included in the pump body assembly is not limited, that is, one or more cylinders 6 may be arranged between the main bearing 3 and the auxiliary bearing 4. When the pump body assembly includes multiple cylinders 6, two adjacent cylinders 6 are connected by a partition 100.

[0075] Further, at least one of the main bearing 3, the auxiliary bearing 4 and the piston 62 and / or the crankshaft 2 is provided with an oil groove. Preferably, a first oil groove is provided on the outer peripheral wall of the crankshaft 2 and / or the inner peripheral wall of the main bearing 3, and the first oil groove is preferably spiral-shaped, and the refrigeration oil can flow along the first oil groove to lubricate the crankshaft 2 and the main bearing 3; a second oil groove is provided on the outer peripheral wall of the eccentric part of the crankshaft 2, and the second oil groove is preferably spiral-shaped, and the refrigeration oil can flow along the second oil groove to lubricate the crankshaft 2 and the piston 62; a third oil groove is provided on the outer peripheral wall of the crankshaft 2 or / and the inner peripheral wall of the auxiliary bearing 4, and the third oil groove is preferably spiral-shaped, and the refrigeration oil can flow along the third oil groove to lubricate the crankshaft 2 and the auxiliary bearing 4. The first oil groove, the second oil groove and the third oil groove are connected to each other.

[0076] Embodiment 2

[0077] like Figure 7-8 As shown, the difference between the second embodiment and the first embodiment is that the first oil inlet hole is not provided on the main bearing 3 in the second embodiment, but a second oil inlet hole is provided on the auxiliary bearing 4, and the second oil inlet hole includes a second inlet 411 connected to the blade groove 63 and a second outlet 421 connected to the second center through hole 43 of the auxiliary bearing 4. The crankshaft 2 is inserted into the second center through hole 43.

[0078] Combination Figure 11-12 It can be seen that when the motor 5 is working, it drives the piston 62 to rotate eccentrically in the cylinder body 61 through the crankshaft 2, and the blade 7 reciprocates up and down in the blade groove 63 under the pressure of the piston 62 and the elasticity of the spring, and the blade 7 intermittently opens and closes the second inlet 411. When the second inlet 411 is opened, due to the pressure difference between the high-pressure chamber 15 and the low-pressure chamber 14, the refrigeration oil in the high-pressure chamber 15 is sucked into the second central through hole 43 through the blade groove 63, the second inlet 411, and the second outlet 421 to lubricate the pump body assembly.

[0079] Specifically, when the blade 7 moves upward, the blade 7 allows the second inlet 411 to be exposed, the second inlet 411 is opened, and the refrigeration oil in the oil pool 8 enters the second inlet 411 through the blade groove 63 and the spring groove 64, and flows from the second outlet 421 to the second central through hole 43 of the auxiliary bearing 4, and part of the refrigeration oil lubricates the auxiliary bearing 4 and the cylinder body 61 and the piston 62 along the second central through hole 43, and the refrigeration oil flowing into the enclosed space flows into the low-pressure chamber 14 through the shaft hole 21 of the crankshaft 2; part of the refrigeration oil lubricates the main bearing 3 and the cylinder body 61 and the piston 62. The refrigeration oil flowing into the low-pressure chamber 14 returns to the high-pressure chamber 15 with the gas in the low-pressure chamber 14 through the gas path and the oil-gas separation structure and converges into the oil pool 8.

[0080] When the blade 7 moves downward, the blade 7 covers the second inlet 411, the second inlet 411 is closed, and the oil inlet to the pump assembly stops. Preferably, when the blade 7 closes the second inlet 411, the overlapping area of ​​the blade 7 and the second inlet 411 on the cross section of the cylinder 6 is not less than 70% of the area of ​​the second inlet 411.

[0081] During the process of the blade 7 intermittently opening and closing the second inlet 411 on the secondary bearing 4 in Example 2, the refrigeration oil intermittently enters the compressor from the oil pool 8 to lubricate the pump body assembly, reducing the amount of oil flowing from the high-pressure chamber 15 to the low-pressure chamber 14, solving the problem of refrigeration oil accumulation in the low-pressure chamber and difficulty in returning to the high-pressure chamber in the prior art, ensuring sufficient lubrication of various components during the operation of the compressor, thereby ensuring the reliability of the compressor operation.

[0082] like Figure 8-10 As shown, the second oil inlet hole on the auxiliary bearing 4 includes a first section 41 and a second section 42 which are vertically connected. The extension direction of the first section 41 is parallel to the axial direction of the crankshaft 2 and the auxiliary bearing 4 (i.e., the left-right direction). The second inlet 411 is arranged at the left end of the first section 41 and is opened on the side surface (i.e., the left side surface) of the auxiliary bearing 4 close to the cylinder 6; the second section 42 extends along the radial direction of the auxiliary bearing 4, and the second outlet 421 is arranged at the upper end of the second section 42. The second section 42 can be as follows Fig.10 (a) as shown in the blind hole, or as shown in Fig.10 (b) The through hole with the lower end blocked can prevent the refrigerator oil from directly entering the second oil inlet hole through the second section 42.

[0083] The cross-sectional shape of the second oil inlet hole is not limited and can be any shape such as circular, rectangular, elliptical, irregular, etc. The setting position of the second inlet 411 is adapted to the cylinder 6 of different models, rather than being completely fixed.

[0084] Embodiment 3

[0085] The difference between the third embodiment and the first and second embodiments is that the main bearing 3 in the third embodiment is provided with a first oil inlet hole, and the auxiliary bearing 4 is provided with a second oil inlet hole. The structures and working principles of the two embodiments can be referred to in the first and second embodiments, and will not be repeated here.

[0086] Embodiment 4

[0087] Embodiment 4 provides a vehicle, which includes any one of the rotary compressors described in Embodiments 1 to 3 above.

[0088] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A rotary compressor, comprising a shell, an intermediate shell that divides the cavity in the shell into a low-pressure chamber and a high-pressure chamber, a motor arranged in the low-pressure chamber, and a pump body assembly, wherein the pump body assembly comprises a cylinder arranged in the high-pressure chamber, a main bearing and a secondary bearing connected to both sides of the cylinder, and a crankshaft with two ends respectively located in the low-pressure chamber and the high-pressure chamber, an oil pool is provided at the bottom of the high-pressure chamber, and the main bearing is passed through the intermediate shell; one end of the crankshaft is connected to the rotor of the motor, and the other end passes through the main bearing, the cylinder and the secondary bearing in sequence, and is used to drive the piston of the cylinder to rotate eccentrically; a blade groove is provided on the side wall of the cylinder, and a blade that can reciprocate is provided in the blade groove, and one end of the blade abuts against the outer periphery of the piston; it is characterized in that The main bearing and / or the auxiliary bearing is provided with an oil inlet hole, and the oil inlet hole includes an inlet connected to the blade groove and an outlet connected to the central through hole thereof; When the piston rotates eccentrically and drives the blade to reciprocate in the blade groove, the blade intermittently opens and closes the inlet; when the inlet is opened, the refrigeration oil in the oil pool lubricates the pump body assembly through the blade groove, the oil inlet hole and the center through hole.

2. The rotary compressor according to claim 1, characterized in that: When the inlet is closed, the overlapping area between the blade and the inlet on the cross section of the cylinder is not less than 70% of the inlet area.

3. The rotary compressor according to claim 1, characterized in that: The oil inlet hole comprises a first section and a second section which are vertically connected, the inlet is arranged at one end of the first section, and the outlet is arranged at one end of the second section.

4. The rotary compressor according to claim 3, characterized in that: The second section is a blind hole.

5. The rotary compressor according to claim 3, characterized in that: The second section is a through hole, the other end of which is blocked.

6. The rotary compressor according to claim 1, characterized in that: A muffler is arranged on the auxiliary bearing, and a closed space is formed between the two.

7. The rotary compressor according to claim 6, characterized in that: The crankshaft is also provided with an axial hole, which is used to connect the low-pressure chamber and the closed space.

8. The rotary compressor according to claim 1, characterized in that: An oil groove is provided on at least one of the main bearing, the auxiliary bearing and the piston and / or the crankshaft.

9. The rotary compressor according to claim 1, characterized in that: A spring groove connected to the blade groove is also provided on the side wall of the cylinder. A spring connected to the blade is installed in the spring groove. The spring groove is used to connect the blade groove with the oil pool.

10. A vehicle, characterized in that: It comprises a rotor compressor as claimed in any one of claims 1 to 9.

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