Compressor and air conditioner

Abstract

The invention relates to the technical field of air conditioners, in particular to a compressor and an air conditioner, and aims to solve the problem that the coaxiality of a rotor assembly, a stator assembly and a shell is deteriorated due to a welding process of the shell of an existing compressor. In order to achieve the purpose, the compressor comprises a sleeve, a first end cover, a second end cover, a stator assembly, a rotor assembly and a plurality of first grooves, and the first end cover is welded to the first end of the sleeve; the second end cover is welded with the second end of the sleeve; the stator assembly is arranged in an accommodating cavity formed by the first end cover, the second end cover and the sleeve; the rotor assembly is arranged in the accommodating cavity; the multiple first grooves are evenly distributed in the inner wall of the sleeve from the first end of the sleeve to the second end of the sleeve in a clockwise and anticlockwise spiral mode so that the multiple first grooves can form first net-shaped grooves in the inner wall of the sleeve, the contact area between the inner wall and air can be increased, and therefore the heat dissipation capacity of the sleeve is improved, and the service life of the sleeve is prolonged. And therefore, the risk of shell deformation caused by high temperature generated in the welding process is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of air conditioning, and in particular provides a compressor and an air conditioner. Background Art

[0002] Rotary compressors are currently mainly used in household air conditioning systems. Specifically, the rotary compressor includes a housing, a stator assembly, and a rotor assembly. The housing includes a sleeve and end covers provided at both ends of the sleeve. The compressor acts as a power device to drive the refrigerant to circulate in the pipeline to meet the cooling or heating needs. Therefore, in order to ensure the reliability and compression efficiency of the rotary compressor, the end covers provided at both ends of the sleeve are usually sealed and connected to the sleeve. For example, the end covers provided at both ends of the sleeve are connected to both ends of the sleeve by welding.

[0003] However, when the sleeve and the end cover are welded, the heat generated during the welding process will cause the shell to deform due to heat. At this time, the stator assembly fixedly connected to the shell will also translate relative to the rotor assembly due to the deformation of the shell, which will cause the coaxiality of the rotor assembly, the stator assembly and the shell to deteriorate, resulting in deterioration of the performance, noise and reliability of the compressor.

[0004] Accordingly, the art needs a new technical solution to solve the above problems. Summary of the invention

[0005] The present invention aims to solve the above technical problem, that is, to solve the problem that the shell of the existing compressor is deformed by heat due to the welding process, resulting in deterioration of the coaxiality of the rotor assembly, the stator assembly and the shell.

[0006] In a first aspect, the present invention provides a compressor, comprising:

[0007] a sleeve having a first end and a second end disposed oppositely;

[0008] a first end cap, which is sealingly connected to the first end of the sleeve;

[0009] a second end cover, which is sealingly connected to the second end of the sleeve;

[0010] A stator assembly, which is disposed in a receiving cavity formed by the first end cover, the second end cover and the sleeve;

[0011] a rotor assembly disposed in the accommodating chamber; and

[0012] A plurality of first grooves are evenly distributed on the inner wall of the sleeve in a clockwise and counterclockwise spiral manner from the first end of the sleeve to the second end of the sleeve, so that the plurality of first grooves can form a first mesh groove on the inner wall of the sleeve.

[0013] In the preferred technical solution of the above compressor, the sleeve further comprises:

[0014] A first chamfer formed at a first end of the sleeve, the first chamfer being welded to the first end cover; and

[0015] A second chamfer is formed at the second end of the sleeve, and the second chamfer is welded to the second end cover.

[0016] In the preferred technical solution of the above compressor, the stator assembly comprises:

[0017] The stator core has a height of H4, and a distance between an end of the stator core close to the first end cover and an end surface of the first end cover away from the stator core is H3, wherein H3≥H4.

[0018] In the preferred technical solution of the above compressor, H3 / H4≤2.

[0019] In the preferred technical solution of the above compressor, the height of the first chamfer is L1, and the height of the second chamfer is L2, wherein L1≤H3 / 5-H3 / 4, and L2≤H3 / 5-H3 / 4.

[0020] In the preferred technical solution of the above compressor, the plurality of first grooves include:

[0021] N grooves in a clockwise spiral; and

[0022] M counterclockwise spiral grooves, where 1≤N / M≤30.

[0023] In the preferred technical solution of the above compressor, the compressor further comprises:

[0024] A plurality of second grooves are evenly distributed on the outer wall of the sleeve in a clockwise and counterclockwise spiral manner from the first end of the sleeve to the second end of the sleeve, so that the plurality of second grooves can form a second mesh groove on the outer wall of the sleeve.

[0025] In a preferred technical solution of the above compressor, the cross section along the direction perpendicular to the axis of the plurality of first grooves and / or the plurality of second grooves is arc-shaped, V-shaped or rectangular.

[0026] In the preferred technical solution of the above compressor, the wall thickness of the sleeve is T1, the depth of the plurality of first grooves is T2, and the depth of the plurality of second grooves is T3, wherein T1-T2-T3≥1.5mm-2mm.

[0027] In a second aspect, the present invention further provides an air conditioner, comprising the above-mentioned compressor.

[0028] When adopting the above technical solution, the present invention arranges mesh grooves on the inner wall of the sleeve to increase the contact area between the inner wall and the air, thereby improving the heat dissipation capacity of the sleeve, and further reducing the risk of shell deformation due to the high temperature generated during the welding process. This also reduces the risk of deterioration of the coaxiality of the rotor assembly, the stator assembly and the shell due to the high temperature generated during the welding process, thereby ensuring the performance of the compressor.

[0029] Moreover, since the mesh grooves are composed of grooves uniformly distributed on the inner wall of the sleeve in a clockwise and counterclockwise manner, the cooling oil on the inner wall of the sleeve can flow downstream along the grooves during the rotation of the rotor assembly, and since the grooves on the inner wall are distributed in a clockwise spiral and a counterclockwise spiral manner, the airflow generated during the rotation of the rotor assembly can accelerate the flow speed of the inner wall cooling oil, thereby increasing the circulation speed of the cooling oil inside the compressor casing, so that during the operation of the compressor, the same cooling effect can be achieved with less oil than before, thereby appropriately reducing the amount of cooling oil on the inner wall of the casing, thereby reducing the risk of oil spitting out by the compressor, thereby ensuring the performance of the compressor. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] The preferred embodiments of the present invention are described below in conjunction with the accompanying drawings, in which:

[0031] Figure 1 is a schematic diagram of the internal structure of the compressor of the present invention;

[0032] Figure 2 The present invention comprises a sleeve, a stator assembly, a rotor assembly and a pump body assembly of a compressor;

[0033] Figure 3 It is a schematic diagram of the internal structure of the sleeve of the compressor of the present invention;

[0034] Figure 4 is a schematic structural diagram of a first end cover of a compressor of the present invention;

[0035] Figure 5 It is a half-section schematic diagram of the sleeve of the compressor of the present invention.

[0036] List of reference numerals:

[0037] 100. Compressor; 1. First end cover; 11. Air intake hole; 111. Third groove; 2. Sleeve; 21. First groove; 211. Clockwise spiral groove; 212. Counterclockwise spiral groove; 22. First chamfer; 23. Second chamfer; 3. Stator assembly; 4. Rotor assembly; 5. Pump body assembly; 6. Second end cover. DETAILED DESCRIPTION

[0038] The preferred embodiments of the present invention are described below with reference to the accompanying drawings. It should be understood by those skilled in the art that these embodiments are only used to explain the technical principles of the present invention and are not intended to limit the scope of protection of the present invention. Those skilled in the art can make adjustments to them as needed to adapt to specific applications. For example, although the description is described in conjunction with a compressor, it is obvious that it can also be applied to other devices with motors.

[0039] It should be noted that in the description of the present invention, the terms "inside" and "outside" and other terms indicating directions or positional relationships are based on the directions or positional relationships shown in the drawings, which are only for the convenience of description, and do not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0040] In addition, it should be noted that in the description of the present invention, unless otherwise clearly specified and limited, the terms "connected" and "connection" 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 directly connected or indirectly connected through an intermediate medium. For those skilled in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0041] Figure 1 It is a schematic diagram of the internal structure of a compressor according to an embodiment of the present invention. Figure 2 The invention relates to a sleeve, a stator assembly, a rotor assembly and a pump body assembly of a compressor according to an embodiment of the present invention. Figure 3 It is a schematic diagram of the internal structure of a sleeve of a compressor according to an embodiment of the present invention. Figure 4 It is a schematic structural diagram of a first end cover of a compressor according to an embodiment of the present invention. Figure 5 It is a half-section schematic diagram of a sleeve of a compressor according to an embodiment of the present invention.

[0042] like Figure 1 See also Figure 2-Figure 4, in order to solve the problem that the shell of the existing compressor is deformed by heat due to the welding process, resulting in the deterioration of the coaxiality of the rotor assembly, the stator assembly and the shell. The present invention provides a compressor 100, which includes a sleeve 2, a first end cover 1, a second end cover 6, a stator assembly 3, a rotor assembly 4, a pump body assembly 5 and a plurality of first grooves 21, the first end cover 1 is welded to the first end of the sleeve 2, and the second end cover 6 is welded to the second end of the sleeve 2. The stator assembly 3 is arranged in the accommodating cavity formed by the first end cover 1, the second end cover 6 and the sleeve 2, and the stator assembly 3 is arranged at the end of the accommodating cavity close to the first end cover 1. Specifically, the stator assembly 3 is fixedly connected to the inner wall of the sleeve 2. More specifically, in the specific implementation of the present invention, the connection method of the stator assembly 3 and the inner wall of the sleeve 2 is welding, but this is not restrictive. Obviously, the connection method of the stator assembly 3 and the inner wall of the sleeve 2 can also be screw connection, clamping or other connection methods, as long as the connection method can make the stator assembly 3 and the inner wall of the sleeve 2 fixedly connected. The rotor assembly 4 is arranged in the accommodating cavity and is coaxially arranged with the stator assembly 3. A plurality of first grooves 21 are evenly distributed on the inner wall of the sleeve 2 in a clockwise and counterclockwise spiral manner from the first end of the sleeve 2 to the second end of the sleeve 2, so that the plurality of first grooves 21 can form a first mesh groove on the inner wall of the sleeve 2 to increase the contact area between the inner wall of the sleeve 2 and the air, thereby improving the heat dissipation capacity of the sleeve 2, thereby reducing the risk of deformation of the housing due to the high temperature generated during the welding process, thereby reducing the risk of deterioration of the coaxiality of the rotor assembly 4, the stator assembly 3 and the housing due to the high temperature generated during the welding process, thereby ensuring the performance of the compressor 100.

[0043] Continue reading Figure 1 The pump body assembly 5 is arranged at the end of the rotor assembly 4 away from the first end cover 1, and is connected to the output shaft of the rotor assembly 4, so that the pump body assembly 5 can compress the refrigerant entering the inside of the compressor 100 shell under the drive of the rotor assembly 4. It should be noted that the specific structure of the pump body assembly 5 is not the focus of the present invention, and the pump body assembly 5 of the present invention can also adopt the commonly used pump body assembly 5 in the field. Therefore, the specific structure of the pump body assembly 5 of the present invention will not be repeated here.

[0044] In addition, the inventors have also found in the process of implementing the present invention that the compressor in the prior art usually frequently spits out oil due to the excessively high internal oil level.

[0045] The present invention is provided with mesh grooves on the inner wall of the sleeve 2, and the mesh grooves are formed by grooves uniformly distributed on the inner wall of the sleeve 2 in a clockwise and counterclockwise manner, so that the upper cooling oil located on the inner wall of the sleeve 2 can flow down along the grooves during the rotation of the rotor assembly 4, and because the grooves on the inner wall are distributed in a clockwise spiral and a counterclockwise spiral manner, the airflow generated during the rotation of the rotor assembly 4 can accelerate the flow speed of the inner wall cooling oil, increase the speed of the cooling oil circulating inside the compressor 100 shell, and also increase the contact area between the cooling oil and the sleeve 2, thereby improving the heat exchange efficiency between the sleeve 2 and the cooling oil. In this way, the amount of cooling oil inside the shell can be appropriately reduced while ensuring the cooling effect of the cooling oil and the role of the oil seal, so that during the operation of the compressor 100, the same cooling effect can be achieved with less oil than before, thereby reducing the risk of the compressor 100 spitting oil, thereby ensuring the performance of the compressor 100.

[0046] In addition, since the inner wall of the sleeve 2 of the present invention is provided with mesh grooves, the number of reflections of the noise generated by the rotation of the rotor assembly 4 inside the sleeve can be effectively increased. Since the energy transmitted by the noise can be reduced as the number of reflections increases, the effect of reducing noise is finally achieved. At the same time, the mesh grooves provided on the inner wall of the sleeve 2 can reduce the weight of the sleeve 2, thereby further reducing the weight of the compressor 100.

[0047] As a possible implementation, Figure 1 See also Figure 2 and Figure 3 , the multiple first grooves 21 include N clockwise spiral grooves 211 and M counterclockwise spiral grooves 212. Specifically, in the specific implementation of the present invention, if the rotor assembly 4 moves clockwise relative to the sleeve 2 during the working state of the compressor 100, at this time, the number of clockwise spiral grooves 211 on the inner wall of the sleeve 2 is proportional to the speed of the cooling oil flowing down the inner wall of the sleeve 2. Based on this, the present invention sets the value of N / M to: 1≤N / M≤30, so that the cooling oil on the inner wall of the sleeve 2 can flow down from the inner wall of the sleeve 2 faster. It should be noted that although 1≤N / M≤30 is described above, this is not restrictive. In other embodiments of the present invention, the value of N / M can also be adjusted according to demand, as long as the performance of the compressor 100 and the strength of the sleeve 2 can be guaranteed.

[0048] It should be noted that, although the rotor assembly 4 rotates clockwise when the compressor 100 is running, this is not restrictive. In other embodiments of the present invention, when the compressor 100 is in operation, the rotor assembly 4 may also rotate counterclockwise relative to the sleeve 2. At this time, based on the principle that the number of counterclockwise spiral grooves 212 on the inner wall of the sleeve 2 is proportional to the speed of the cooling oil on the inner wall of the sleeve 2 when the rotor assembly 4 rotates counterclockwise relative to the sleeve 2, in order to make the cooling oil on the inner wall of the sleeve 2 flow down faster, the present invention sets the value of M / N to: 1≤M / N≤30. It should be noted that, although the above description of 1≤M / N≤30, this is not restrictive. In other embodiments of the present invention, the value of N / M can also be adjusted according to demand, as long as the performance of the compressor 100 and the strength of the sleeve 2 can be guaranteed. This adjustment does not deviate from the principle of the present invention, and therefore will fall within the scope of protection of the present invention.

[0049] As a possible implementation, Figure 1 See also Figure 2 , the first end of the sleeve 2 is provided with a first chamfer 22, specifically, the first chamfer 22 is sealed and connected with the edge of the first end cover 1 by welding. The second end of the sleeve 2 is provided with a second chamfer 23, and the second chamfer 23 is sealed and connected with the edge of the second end cover 6 by welding. In this way, by providing the first chamfer 22 at the first end of the sleeve 2 and the second chamfer 23 at the second end of the sleeve 2, the positioning accuracy of the first end cover 1, the second end cover 6 and the sleeve 2 can be improved, and the effective contact area between the first end cover 1, the second end cover 6 and the sleeve 2 can be increased, so that the heat transfer rate between the welding point and the first end cover 1, the second end cover 6 and the sleeve 2 can be improved, so that the heat can be more evenly distributed on the first end cover 1, the second end cover 6 and the sleeve 2 during the welding process of the shell, so as to reduce the risk of deformation of the shell due to stress concentration during the welding process. Moreover, the present invention can also be combined with the mesh grooves provided inside the sleeve 2 to increase the heat dissipation rate inside the sleeve 2, so as to further reduce the risk of deformation of the shell due to the heat generated during the welding process.

[0050] It should be noted that, without departing from the basic principles of the present invention, those skilled in the art can flexibly select the specific setting form of the mesh groove according to the specific application scenario, as long as the heat dissipation speed of the sleeve can be improved.

[0051] In addition, the angles of the first chamfer 22 and the second chamfer 23 can be determined by the designer based on experience, experiment, calculation, etc., for example, 30°, 40° or 60°. Obviously, other angles are also possible, as long as the contact strength, sealing and contact area between the first end cover, the second end cover and the sleeve can be guaranteed. Such adjustment does not deviate from the principle of the present invention, and therefore will also fall within the protection scope of the present invention.

[0052] As a possible implementation, Figure 1 See also Figure 2 The stator assembly 3 includes a stator core having a height of H4, and an end of the stator core close to the first end cover 1 is at a distance of H3 from an end cover of the first end cover 1 away from the stator core. Specifically, H3≥H4, so that the distance between the end of the stator core close to the first end cover 1 and the end face of the first end cover 1 away from the stator core is greater than or equal to the height of the stator core itself, so as to reduce the influence of heat generated during welding on the rotor assembly 4, so as to ensure the performance of the compressor 100.

[0053] It should be noted that although the above combination Figure 2 The described H3 / H4≥1, but this is not restrictive. In the specific implementation of the present invention, H3 / H4≥1.5 may also be adopted. Such adjustment does not deviate from the principle of the present invention and thus will fall within the protection scope of the present invention.

[0054] Preferably, in the specific implementation of the present invention, H3 / H4≤2, so that the distance between the end of the stator core close to the first end cover 1 and the end face of the first end cover 1 away from the stator core is less than or equal to twice the height of the stator core itself. By such an arrangement, the risk of affecting the welding accuracy of the stator and the inner wall of the sleeve 2 due to the long distance between the edges of the stator and the first end of the sleeve 2 can be reduced, so as to ensure the coaxiality of the stator core and the sleeve 2, thereby ensuring the coaxiality of the stator core and the rotor assembly 4, and further ensuring the performance of the compressor 100.

[0055] It should be noted that, although the above description H3 / H4≤2, this is not restrictive, and in other embodiments of the present invention, those skilled in the art may also set H3 and H4 to: H3 / H4≤1.8, and such adjustment does not deviate from the principle of the present invention, and therefore shall fall within the protection scope of the present invention.

[0056] As a possible implementation, Figure 2 See also Figure 1 and Figure 3, the height of the first chamfer 22 is L1, the angle is A1, the height of the second chamfer 23 is L2, the angle is A2, wherein L1 and L2 are both less than or equal to H3 / 4, the value of A1 is 30°, 45° or 60°, and the value of A2 is 30°, 45° or 60°. Through the above-mentioned setting, the assembly accuracy of the first end cover 1, the second end cover 6 and the sleeve 2 can be ensured, and the stress in the welding process can be better dispersed to reduce stress concentration, thereby reducing the risk of local deformation of the shell due to the heat generated during the welding process.

[0057] It should be noted that, although the above description states that L1 and L2 are both less than or equal to H3 / 4, this is not restrictive. In other embodiments of the present invention, those skilled in the art may also make L1 and L2 less than or equal to H3 / 5. Obviously, in other embodiments of the present invention, the sizes of L1 and L2 may be adjusted as needed, as long as the sealing and heat dissipation between the first end cover 1, the second end cover 6 and the sleeve 2 can be guaranteed. Such adjustment does not deviate from the principle of the present invention and therefore will fall within the protection scope of the present invention.

[0058] As a possible implementation, Figure 5 As shown, the compressor 100 also includes a plurality of second grooves, which are evenly distributed on the outer wall of the sleeve 2 in a clockwise and counterclockwise spiral manner from the first end of the sleeve 2 to the second end of the sleeve 2, so that the plurality of second grooves can form a second mesh groove on the outer wall of the sleeve 2. In this way, the present invention can increase the contact area between the outer wall of the sleeve 2 and the air through the second mesh groove support sleeve 2, thereby improving the heat exchange efficiency between the shell of the compressor 100 and the air, so as to further reduce the risk of shell deformation due to the high temperature generated during the welding process.

[0059] As a possible implementation, Figure 1 See also Figure 4, the first end cover 1 is provided with an air intake hole 11, which is connected with the accommodation cavity formed by the first end cover 1, the second end cover 6 and the sleeve 2, so that air can be inhaled through the air intake hole 11 during the operation of the compressor 100. Specifically, in order to increase the contact area between the air and the air intake hole 11, when the present invention is implemented, a third groove 111 can also be provided on the inner wall of the air intake hole 11. More specifically, when the present invention is implemented, the third groove 111 can be a clockwise spiral groove 211 or a third counterclockwise spiral groove 212 provided on the inner wall of the air intake hole 11 from the end away from the sleeve 2 to the end close to the sleeve 2, wherein the rotation direction of the third groove 111 is the same as the rotation direction of the rotor assembly 4 when the compressor 100 is in the working state, so that the airflow entering the accommodation cavity through the air intake hole 11 can be the same as the airflow formed by the rotation of the rotor assembly 4, so as to increase the flow speed of the airflow in the accommodation cavity, and further increase the speed of the cooling oil flowing down the inner wall of the sleeve 2.

[0060] As a possible implementation, Figure 1 See also Figure 3 and Figure 5 The cross section along the axial direction perpendicular to the plurality of first grooves 21 and the plurality of second grooves is arc-shaped, V-shaped or rectangular. Such adjustment does not deviate from the principle of the present invention and therefore falls within the protection scope of the present invention.

[0061] As a possible implementation, Figure 1 See also Figure 3 and Figure 5 The wall thickness of the sleeve 2 is T1, the depth of the multiple first grooves 21 is T2, and the depth of the multiple second grooves is T3. T1-T2-T3≥1.5mm. Through the above-mentioned setting method, even if grooves are provided on both the outer wall and the inner wall of the sleeve 2, the thickness of the thinnest part of the sleeve 2 must be greater than or equal to 1.5mm to ensure the strength of the sleeve 2.

[0062] It should be noted that, although T1-T2-T3 ≥ 1.5 mm described above, this is not restrictive, and those skilled in the art can also make T1-T2-T3 ≥ 2 mm as needed. Obviously, the value of T1-T2-T3 can also be set to other values, as long as the strength of the sleeve 2 can be guaranteed. Such adjustment does not deviate from the principle of the present invention, and therefore will fall within the scope of protection of the present invention.

[0063] In addition, this embodiment further provides an air conditioner, which includes the compressor 100 mentioned above.

[0064] In addition, those skilled in the art will appreciate that, although some embodiments described herein include certain features included in other embodiments but not other features, the combination of features of different embodiments is meant to be within the scope of the present invention and form different embodiments. For example, in the claims of the present invention, any one of the claimed embodiments may be used in any combination.

[0065] So far, the technical solutions of the present invention have been described in conjunction with the preferred embodiments shown in the accompanying drawings. However, it is easy for those skilled in the art to understand that the protection scope of the present invention is obviously not limited to these specific embodiments. Without departing from the principle of the present invention, those skilled in the art can make equivalent changes or substitutions to the relevant technical features, and the technical solutions after these changes or substitutions will fall within the protection scope of the present invention.

Claims

1. A compressor, characterized in that: The compressor comprises: a sleeve having a first end and a second end disposed oppositely; a first end cover welded to the first end of the sleeve; a second end cover welded to the second end of the sleeve; A stator assembly, which is disposed in a receiving cavity formed by the first end cover, the second end cover and the sleeve; a rotor assembly disposed in the accommodating chamber; and A plurality of first grooves are evenly distributed on the inner wall of the sleeve in a clockwise and counterclockwise spiral manner from the first end of the sleeve to the second end of the sleeve, so that the plurality of first grooves can form a first mesh groove on the inner wall of the sleeve.

2. The compressor according to claim 1, characterized in that The sleeve also includes: A first chamfer formed at a first end of the sleeve, the first chamfer being welded to the first end cover; and A second chamfer is formed at the second end of the sleeve, and the second chamfer is welded to the second end cover.

3. The compressor according to claim 1, characterized in that The stator assembly comprises: The stator core has a height of H4, and a distance between an end of the stator core close to the first end cover and an end surface of the first end cover away from the stator core is H3, wherein H3≥H4.

4. The compressor according to claim 3, characterized in that H3 / H4≤2.

5. The compressor according to claim 2, characterized in that The height of the first chamfer is L1, and the height of the second chamfer is L2, wherein L1≤H3 / 5-H3 / 4, and L2≤H3 / 5-H3 / 4.

6. The compressor according to claim 1, characterized in that The plurality of first grooves include: N clockwise spiral grooves; and M counterclockwise spiral grooves, Among them, 1≤N / M≤30.

7. The compressor according to claim 1, characterized in that The compressor also includes: A plurality of second grooves are evenly distributed on the outer wall of the sleeve in a clockwise and counterclockwise spiral manner from the first end to the second end of the sleeve, so that the plurality of second grooves can form a second mesh groove on the outer wall of the sleeve.

8. The compressor according to claim 7, characterized in that The cross section along the direction perpendicular to the axis of the plurality of first grooves and / or the plurality of second grooves is arc-shaped, V-shaped or rectangular.

9. The compressor according to claim 7, characterized in that The wall thickness of the sleeve is T1, the depth of the plurality of first grooves is T2, and the depth of the plurality of second grooves is T3, wherein T1-T2-T3≥1.5mm-2mm.

10. An air conditioner, characterized in that: A compressor comprising the compressor according to any one of claims 1 to 9.

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