Motors, compressors and refrigeration systems

Abstract

The present disclosure provides a motor, a compressor and a refrigeration system. The motor includes: a motor housing, including a housing body and a plurality of bosses arranged on the inner surface of the housing body, the housing body and the plurality of bosses defining a motor mounting hole; a stator core, located in the motor mounting hole; and a damping sleeve, located in the motor mounting hole between the motor housing and the stator core, the inner surface of the damping sleeve abutting against the stator core, and the outer surface of the damping sleeve abutting against the plurality of bosses. The motor of the present disclosure embodiment can reduce the magneto-induced vibration of the motor.

Description

Technical Field

[0001] The present disclosure relates to the technical field of motors, and in particular to a motor, a compressor and a refrigeration system. Background Art

[0002] In the field of motor technology, motor vibration reduction is gaining more and more attention. Taking the motor of the screw compressor of the refrigeration system as an example, the compressor energy efficiency has reached a very high level, but users are gradually paying attention to the level of compressor vibration and noise, and compressor vibration and noise are gradually becoming the core indicator affecting user experience.

[0003] The motor and compressor body of the screw compressor of the refrigeration system are usually designed as an integrated whole. The motor stator and the boss on the inner surface of the shell are installed in the shell of the compressor suction end through interference fit, and the space between the stator core and the shell boss is the refrigerant air flow channel. In the related technology, the stator core is only constrained by the bosses at intervals in the circumferential direction, and the circumferential constraint of the stator core is discontinuous, and its constraint stiffness is limited. The electromagnetic force wave and the natural vibration characteristics of the stator are easy to match and produce resonance, or the vibration response caused by electromagnetics is large due to insufficient constraint stiffness. Summary of the invention

[0004] The purpose of the present disclosure is to provide a motor, a compressor and a refrigeration system, aiming to solve the problem of large magnetically induced vibration of the motor.

[0005] A first aspect of the present disclosure provides a motor, comprising:

[0006] A motor housing, comprising a housing body and a plurality of bosses arranged on an inner surface of the housing body, wherein the housing body and the plurality of bosses define a motor mounting hole;

[0007] A stator core is located in the motor mounting hole; and

[0008] The damping sleeve is located in the motor mounting hole between the motor housing and the stator core, the inner surface of the damping sleeve abuts against the stator core, and the outer surface of the damping sleeve abuts against the plurality of bosses.

[0009] In the electric machine of some embodiments, the damping sleeve is made of a damping alloy.

[0010] In some embodiments of the electric machine, the damping alloy is a manganese-copper alloy.

[0011] In the motor of some embodiments, the thickness of the damping sleeve is 16 mm-30 mm.

[0012] In some embodiments of the electric machine,

[0013] The outer surface of the damping sleeve is provided with a mounting groove extending in the circumferential direction;

[0014] The motor further comprises a damping ring which is installed in the mounting groove and matched with the mounting groove.

[0015] In the motor of some embodiments, the surface of the mounting groove that cooperates with the damping ring and / or the surface of the damping ring that cooperates with the mounting groove has a microstructure for increasing surface roughness.

[0016] In some embodiments of the motor, the installation groove has a depth of 3 mm to 6 mm and a width of 2 mm to 5 mm.

[0017] In the motor of some embodiments, there is a pre-tightening force between the damping ring and the mounting groove.

[0018] In the motor of some embodiments, the mounting slot is an open slot, and the damping ring is an open ring.

[0019] In some embodiments of the motor, the plurality of mounting grooves are arranged along the axial direction of the damping sleeve, and the plurality of damping rings are disposed in the plurality of mounting grooves in a one-to-one correspondence.

[0020] In some embodiments of the motor, the mounting groove is an open groove, the damping ring is an open ring, and a plurality of openings of the open grooves and a plurality of openings of the open rings are arranged in a straight line along the axial direction of the damping sleeve.

[0021] In some embodiments of the motor, the outer surface of the damping sleeve is a cylindrical surface, and the plurality of bosses extend along the axial direction of the motor housing and are evenly distributed along the circumference of the motor housing. The surface where each boss abuts against the damping sleeve is a cylindrical surface with an arc-shaped cross-section that matches the outer surface of the damping sleeve 2.

[0022] In some embodiments of the electric machine,

[0023] The damping sleeve and the plurality of bosses are in interference fit; and / or

[0024] The damping sleeve and the stator core are in interference fit.

[0025] In some embodiments of the electric machine,

[0026] The damping sleeve is connected to the motor housing via a first connecting key; and / or

[0027] The damping sleeve is connected to the stator core via a second connecting key.

[0028] In some embodiments of the motor, the first connecting key is located in an outer keyway of the damping sleeve on the outer surface of the damping sleeve and in an inner keyway of the housing located on one of the bosses.

[0029] In some embodiments of the electric machine,

[0030] The outer surface of the damping sleeve is provided with a mounting groove extending in the circumferential direction, and the mounting groove is an open groove;

[0031] The motor further comprises a damping ring, which is installed in the mounting groove and matched with the mounting groove, and the damping ring is an open ring;

[0032] The sleeve outer keyway is arranged at the opening of the opening groove and the damping ring.

[0033] In some embodiments of the motor, the motor further includes a first limiting portion for limiting the axial position of the first connecting key along the damping sleeve and a second limiting portion for limiting the axial position of the second connecting key along the damping sleeve.

[0034] A second aspect of the present disclosure provides a compressor, comprising a compressor body and a motor drivingly connected to a rotor of the compressor body to drive the rotor of the compressor body to rotate, wherein the motor is the motor described in the first aspect of the present disclosure.

[0035] A third aspect of the present disclosure provides a refrigeration system, comprising the compressor described in the second aspect of the present disclosure.

[0036] Based on the motor provided by the present invention, by adding a damping sleeve between the stator core and the boss of the motor housing, it is beneficial to achieve complete constraint of the stator core in the circumferential direction, increase the constraint stiffness of the stator core, and structurally increase the mechanical impedance on the electromagnetic vibration transmission path of the motor, thereby achieving the effect of reducing the magnetically induced vibration of the motor.

[0037] The compressor and refrigeration system provided by the present disclosure have the same advantages as the motor provided by the present disclosure. Other features and advantages of the present disclosure will become clear through the following detailed description of exemplary embodiments of the present disclosure with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0038] The drawings described herein are used to provide a further understanding of the present disclosure and constitute a part of the present application. The illustrative embodiments of the present disclosure and their descriptions are used to explain the present disclosure and do not constitute an improper limitation on the present disclosure. In the drawings:

[0039] Figure 1 It is a schematic diagram of the assembly structure of part of the structure of the motor according to an embodiment of the present disclosure.

[0040] Figure 2 It is a schematic diagram of the exploded structure of part of the structure of the motor according to an embodiment of the present disclosure.

[0041] Figure 3 Schematic diagram of the structure of the damping ring of the embodiment of the present disclosure.

[0042] Figures 1 to 3 In the figure, each reference numeral represents:

[0043] 1. motor housing, 11. motor mounting hole, 12. housing body, 13. boss;

[0044] 2. Damping sleeve, 21. Mounting groove, 22. Sleeve outer keyway, 23. Sleeve inner keyway;

[0045] 3. stator core, 31. core outer keyway;

[0046] 4. Damping ring;

[0047] 5. a first limiting portion, 51. a first baffle, 52. a first screw;

[0048] 6. second limiting portion, 61. second baffle, 62. second screw;

[0049] 7. First connection key;

[0050] 8. Second connection key. DETAILED DESCRIPTION

[0051] The following will be combined with the drawings in the embodiments of the present disclosure to clearly and completely describe the technical solutions in the embodiments of the present disclosure. Obviously, the described embodiments are only part of the embodiments of the present disclosure, rather than all of the embodiments. The following description of at least one exemplary embodiment is actually only illustrative and is by no means intended to limit the present disclosure and its application or use. Based on the embodiments in the present disclosure, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present disclosure.

[0052] Unless otherwise specifically stated, the relative arrangement of the parts and steps described in these embodiments, numerical expressions and numerical values ​​do not limit the scope of the present disclosure. At the same time, it should be understood that, for ease of description, the sizes of the various parts shown in the drawings are not drawn according to the actual proportional relationship. The technology, methods and equipment known to ordinary technicians in the relevant field may not be discussed in detail, but in appropriate cases, the technology, methods and equipment should be regarded as a part of the authorization specification. In all examples shown and discussed here, any specific value should be interpreted as being merely exemplary, rather than as a limitation. Therefore, other examples of exemplary embodiments may have different values. It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further discussed in subsequent drawings.

[0053] In the description of the present disclosure, it should be understood that the use of terms such as "first" and "second" to limit components is only for the convenience of distinguishing the corresponding components. Unless otherwise stated, the above terms have no special meaning and therefore cannot be understood as limiting the scope of protection of the present disclosure.

[0054] In the description of the present disclosure, it should be understood that the orientation or positional relationship indicated by the directional words is usually based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present disclosure and simplifying the description. Unless otherwise specified, these directional words do not indicate or imply that the device or element referred to must have a specific orientation or be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the scope of protection of the present disclosure; the directional words "inside and outside" refer to the inside and outside relative to the outline of each component itself.

[0055] In the process of implementing the technical solution of the present disclosure, the inventors studied the relevant technologies and found that the relevant technologies have the following deficiencies:

[0056] The motor stator core of the screw compressor in the related art is installed into the boss on the inner surface of the motor housing of the compressor through a press-fitting process. The boss will cause the silicon steel sheet of the stator core to deform, the roundness to deteriorate, the air gap between the stator and the rotor to be uneven, and thus the electromagnetic vibration to deteriorate.

[0057] The damping and vibration reduction effect of the stator core and the motor housing of the screw compressor in the related art is only provided by the motor housing (usually made of cast iron), which has small damping and limited vibration reduction effect.

[0058] The motor stator core of the screw compressor in the related art is not constrained continuously in the circumferential direction, but is intermittently constrained in the circumferential direction, and the constraining stiffness of the stator core is small and uneven.

[0059] In order to solve the above technical problems, Figures 1 to 3 As shown, an embodiment of the present disclosure provides a motor. The motor mainly includes a motor housing 1, a stator core 3 and a damping sleeve 2. The motor also includes a motor rotor (not shown). The motor rotor is rotatably disposed in the center hole of the stator core 3.

[0060] like Figure 1 and Figure 2 As shown, the motor housing 1 includes a housing body 12 and a plurality of bosses 13 arranged on the inner surface of the housing body 12, and the housing body 12 and the plurality of bosses 13 define a motor mounting hole 11. The stator core 3 is located in the motor mounting hole 11. The damping sleeve 2 is located in the motor mounting hole 11 between the motor housing 1 and the stator core 3. The inner surface of the damping sleeve 2 abuts against the stator core 3, and the outer surface of the damping sleeve 2 abuts against the plurality of bosses 13.

[0061] The motor of the disclosed embodiment adds a damping sleeve 2 between the stator core 3 and the boss 13 of the motor housing 1, thereby achieving complete circumferential constraint on the stator core 3, increasing the constraint stiffness of the stator core 3, and structurally increasing the mechanical impedance on the electromagnetic vibration transmission path of the motor, thereby achieving the effect of reducing the magneto-induced vibration of the motor.

[0062] By adding the damping sleeve 2 between the stator core 3 and the boss 13 of the motor housing 1, it is helpful to ensure the cylindricity of the stator core 3 and the roundness of the stator silicon steel sheet, make the air gap between the stator core 3 and the motor rotor uniform, and help solve the deformation problem caused by the boss 13 of the motor housing 1 acting on the stator core 3 when the stator core 3 is directly pressed.

[0063] In the motor of some embodiments, the damping sleeve 2 is made of a damping alloy.

[0064] The damping sleeve 2 made of damping alloy has stable dynamic characteristics and high reliability, and is not prone to performance degradation or failure due to ambient temperature and use time, thereby achieving the purpose of improving the working accuracy of the motor, extending its life, and reducing noise.

[0065] In some embodiments of the motor, the damping alloy is a manganese copper alloy. The manganese copper alloy has a strength of 540-700 MPa, an elongation of 20%-40%, and a damping index of 20%-40%, which can achieve a good vibration reduction effect.

[0066] In some embodiments of the motor, the thickness of the damping sleeve 2 is 16 mm to 30 mm. By setting a suitable thickness for the damping sleeve 2, a better vibration reduction effect can be achieved while saving materials and costs as much as possible and reducing the weight of the motor.

[0067] like Figure 1 and Figure 2 As shown, in some embodiments of the motor, a mounting groove 21 extending in the circumferential direction is provided on the outer surface of the damping sleeve 2. The motor further includes a damping ring 4, which is mounted in the mounting groove 21 and cooperates with the mounting groove 21. Vibration energy can be dissipated by friction between the damping sleeve and the damping ring, further reducing the vibration of the motor. The damping ring 4 can be made of the same or different damping material as the damping sleeve 2.

[0068] In some embodiments of the motor, the surface of the mounting groove 21 that matches the damping ring 4 and / or the surface of the damping ring 4 that matches the mounting groove 21 has a microstructure for increasing the surface roughness. The microstructure includes, for example, a plurality of micropores, tiny protrusions, fine lines, etc. Providing the microstructure is conducive to dissipating vibration energy.

[0069] In some embodiments of the motor, the depth of the mounting groove 21 is 3 mm-6 mm, and the width is 2 mm-5 mm. Setting a suitable size of the mounting groove 21 is conducive to installing a damping ring 4 of suitable size on the basis of ensuring the strength of the damping sleeve 2, so that the damping ring 4 and the damping sleeve 2 maintain a good matching state to achieve the purpose of stably dissipating vibration energy.

[0070] In the motor of some embodiments, there is a pre-tightening force between the damping ring 4 and the mounting groove 21. This arrangement is conducive to the damping ring 4 and the mounting groove 21 to maintain a good matching state to achieve the purpose of stably dissipating vibration energy.

[0071] In some embodiments of the motor, the mounting groove 21 is an open groove, and the damping ring 4 is an open ring. This arrangement facilitates the assembly of the damping ring 4, facilitates the sleeve of the damping ring 4 on the damping sleeve 2, and facilitates the installation of the damping ring 4 and the mounting groove 21 with a preload.

[0072] In some embodiments of the motor, a plurality of mounting grooves 21 are arranged along the axial direction of the damping sleeve 2, and a plurality of damping rings 4 are disposed one by one in the plurality of mounting grooves 21. This arrangement is conducive to fully utilizing the damping rings 4 and the mounting grooves 21 to dissipate vibration energy.

[0073] In some embodiments of the motor, the mounting groove 21 is an open groove, the damping ring 4 is an open ring, and the openings of the multiple open grooves and the openings of the multiple open rings are arranged in a straight line along the axial direction of the damping sleeve 2. This arrangement facilitates the unified processing and assembly of the damping sleeve 2 and the damping ring 4.

[0074] In some embodiments of the motor, the outer surface of the damping sleeve 2 is a cylindrical surface, and a plurality of bosses 13 extend along the axial direction of the motor housing 1 and are evenly distributed along the circumference of the motor housing 1. The surface of each boss 13 abutting against the damping sleeve 2 is a cylindrical surface with a circular arc cross section that matches the outer surface of the damping sleeve 2. This arrangement facilitates the stable installation of the damping sleeve 2 in the motor housing 1 and supports the stator core 3, and helps reduce installation errors and improve assembly accuracy.

[0075] In some embodiments of the motor, the damping sleeve 2 and the plurality of bosses 13 are interference fit; and / or the damping sleeve 2 and the stator core 3 are interference fit. The above arrangement is conducive to ensuring the cylindricity of the stator core 3 and the roundness of the stator silicon steel sheet, and is conducive to uniform air gap between the stator core 3 and the motor rotor.

[0076] In some embodiments of the motor, the damping sleeve 2 is key-connected to the motor housing 1 via a first connection key 7; and / or the damping sleeve 2 is key-connected to the stator core 3 via a second connection key 8. The key connection can achieve circumferential fixation of the damping sleeve 2 to the motor housing 1 and / or the damping sleeve 2 to the stator core 3, which is beneficial to the assembly and disassembly of the damping sleeve 2 to the motor housing 1 and / or the damping sleeve 2 to the stator core 3.

[0077] In some embodiments of the motor, the first connecting key 7 is located in the sleeve outer keyway 22 on the outer surface of the damping sleeve 2 and in the housing inner keyway 131 located on a boss 13. This arrangement facilitates rapid assembly of the damping sleeve 2 and the motor housing 1.

[0078] In some embodiments of the motor, the outer surface of the damping sleeve 2 is provided with a mounting groove 21 extending in the circumferential direction, and the mounting groove 21 is an open groove; the motor further includes a damping ring 4, which is installed in and matched with the mounting groove 21, and the damping ring 4 is an open ring; the sleeve outer keyway 22 is arranged at the opening of the open groove and the damping ring 4. This arrangement reasonably arranges the relative positions of the damping ring 4, the mounting groove 21, and the sleeve outer keyway 22, so that the related structures can realize their own functions while not interfering with each other when they are arranged.

[0079] In some embodiments of the motor, the motor further includes a first limiting portion 5 for limiting the axial position of the first connecting key 7 along the damping sleeve 2 and a second limiting portion 6 for limiting the axial position of the second connecting key 8 along the damping sleeve 2. The first limiting portion and the second limiting portion are conducive to improving the connection stability between the components connected by the key.

[0080] The embodiment of the present disclosure also provides a compressor, comprising a compressor body and a motor drivingly connected to a rotor of the compressor body to drive the rotor of the compressor body to rotate, characterized in that the motor is the motor of the embodiment of the present disclosure. The compressor is, for example, a screw compressor. The compressor of the embodiment of the present disclosure has the same advantages as the motor of the embodiment of the present disclosure.

[0081] The embodiment of the present disclosure also provides a refrigeration system, including the compressor of the embodiment of the present disclosure. The refrigeration system of the embodiment of the present disclosure has the same advantages as the compressor of the embodiment of the present disclosure and the motor of the embodiment of the present disclosure.

[0082] The following combination Figures 1 to 3 The motor according to the embodiment of the present disclosure is described in more detail.

[0083] like Figures 1 to 3 As shown, the inner surface of the shell body 12 of the motor housing 1 is provided with a plurality of bosses 13, and the inner surface of the shell body 12 and the plurality of bosses 13 define the motor mounting hole 11. In order to realize the installation of the motor and the foundation, the lower part of the shell body 12 is also provided with an integrated machine foot.

[0084] A plurality of bosses 13 extend along the axial direction of the motor housing 1 and are evenly distributed along the circumference of the motor housing 1. The number of bosses 13 is, for example, 4 to 8. The surface of the boss 13 facing the damping sleeve 2 is a cylindrical surface with an arc-shaped cross section, and the cylindrical surface is finely machined to fit well with the damping sleeve 2.

[0085] lie in Figure 1 and Figure 2 The boss 13 at the top of the middle motor housing 1 is processed with a housing inner keyway 131 for mounting the first connecting key 7 .

[0086] A damping sleeve 2 is installed between the boss 13 on the inner surface of the shell body 12 and the stator core 13, and the outer surface of the damping sleeve 2 is finely processed to match well with the aforementioned cylindrical surface of the boss 13. The thickness of the damping sleeve is 16mm-30mm.

[0087] exist Figure 1 and Figure 2 The top outer surface of the middle damping sleeve 2 is axially opened with a sleeve outer keyway 22 opposite to the inner keyway 131 of the shell, which is used to install the first connecting key 9. After the first connecting key 9 is installed in the inner keyway 131 of the shell and the sleeve outer keyway 22, the rotational freedom of the damping sleeve 2 around the axis of the motor housing 1 can be constrained.

[0088] exist Figure 1 and Figure 2 In the embodiment, an inner keyway 23 is axially opened at the bottom of the inner surface of the damping sleeve 2 for installing the second connecting key 10, and an outer keyway 31 is axially opened on the outer surface of the stator core 3 for installing the second connecting key 8. After the second connecting key 8 is installed in the inner keyway 23 and the outer keyway 31 of the sleeve, the rotational freedom of the stator core 3 around the axis of the motor housing 1 can be constrained.

[0089] The inner surface of the damping sleeve 2 is finely machined and installed on the stator core 3 by interference fit, so as to ensure the roundness of the silicon steel sheets of the stator core 3 and to ensure uniform air gap between the stator core 3 and the motor rotor installed in the center hole of the stator core 3.

[0090] like Figure 2 As shown, the damping sleeve 2 has a mounting groove 21 along the circumferential direction. The depth of the mounting groove 21 is 3mm-6mm, and the width is 2mm-5mm. A plurality of mounting grooves 21 are arranged side by side and spaced apart along the axial direction of the damping sleeve 2. The mounting grooves 21 are not completely connected end to end in the circumferential direction, but are open grooves with openings, so that the mounting grooves 21 avoid the setting position of the sleeve outer key groove 22 at the top of the damping sleeve 2.

[0091] like Figure 2 As shown, a damping ring 4 is embedded in each mounting groove 21. Figure 2 and Figure 3As shown, the damping ring 4 is an open ring. The opening of the damping ring 4 corresponds to the opening of the mounting groove 21. The openings of all damping rings 4 and the openings of the mounting groove 21 are arranged in a straight line along the axial direction of the damping sleeve 2. In this embodiment, the inner surface of the damping ring 4 is processed with a microstructure, and the microstructure is a plurality of micro protrusions, which are used to increase the roughness, thereby increasing the friction with the surface of the mounting groove 21 of the damping sleeve 2. When the stator core 3 of the damping sleeve 2 vibrates, the inner surface of the mounting groove 21 of the damping sleeve 2 generates friction with the corresponding damping ring 4, consuming vibration energy. When the damping ring 4 is installed in the mounting groove 21, it has a certain pre-tightening force to keep the damping ring 4 and the mounting groove 21 in contact when the motor vibrates, thereby realizing vibration energy consumption.

[0092] In order to prevent the first connection key 7 from moving along the axial direction of the damping sleeve 2, a first limiting portion 5 is provided to limit the movement of the first connection key 7 along the axial direction of the damping sleeve 2. Figure 1 and Figure 2 As shown, the first limiting portion includes a first baffle 51 and a first screw 52. The first baffle 6 blocks the end of the first connecting key 7, and the first baffle 6 is fixed to the end of the boss 13 where the keyway 131 in the shell is set by the first screw 52, ​​so that the first connecting key 7 can be limited along the axial direction of the damping sleeve 2.

[0093] Similarly, in order to prevent the second connecting key 8 from moving along the axial direction of the damping sleeve 2, a second limiting portion 6 is designed to limit the movement of the second connecting key 8 along the axial direction of the damping sleeve 2. Figure 1 and Figure 2 As shown, the second limiting portion includes a second baffle 61 and a second screw 62. The second baffle 6 blocks the end of the second connecting key 8, and the second baffle 6 is fixed to the end of the boss 13 below the second connecting key 8 by the second screw 62, so that the second connecting key 8 can be limited along the axial direction of the damping sleeve 2.

[0094] The first connection key 7 and the second connection key 8 are arranged 180 degrees apart in the circumferential direction.

[0095] According to the above description, in the motor of the embodiment of the present disclosure, the mechanical impedance and damping on the vibration transmission path between the internal vibration source and the motor housing are increased by arranging a damping sleeve 2 between the stator core 3 and the motor housing 1 to achieve vibration reduction. During the operation of the motor, the electromagnetic force wave will excite the vibration of the stator core, and the vibration is transmitted to the motor housing 1 through the boss 13 on the inner surface of the shell body 12 of the motor housing 1, causing the vibration and noise radiation of the motor housing 1. By adding the damping sleeve 2 between the stator core 3 and the housing 1, the constraint stiffness of the stator core 3 is increased, and the mechanical impedance on the vibration transmission path of the stator core 3 to the motor housing 1 is increased. By embedding the damping ring 4 in the mounting groove 21 arranged on the outer surface of the damping sleeve 2, the vibration energy is consumed by the friction damping between the damping sleeve 2 and the damping ring 4, and the transmission of the magneto-induced vibration to the motor housing 1 is further reduced, thereby reducing the vibration and noise of the motor and improving user comfort.

[0096] When the motor is used in a compressor to drive the rotor of the compressor body, it is helpful to reduce the vibration and noise of the compressor.

[0097] In the above embodiments, the motor of the present invention is described by taking the application of the motor to the rotation of the rotor of the compressor body of the screw compressor in the screw compressor of the refrigeration system as an example, but the application of the motor of the present invention is not limited to this, but can be applied to various devices or systems driven by motors, for example, the motor can also be applied to rotary piston compressors.

[0098] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present disclosure rather than to limit it. Although the present disclosure has been described in detail with reference to the preferred embodiments, ordinary technicians in the relevant field should understand that the specific implementation methods of the present disclosure can still be modified or some technical features can be replaced by equivalents, which should all be included in the scope of the technical solution for protection requested by the present disclosure.

Claims

1. A motor, characterized in that: include: A motor housing (1) comprises a housing body (12) and a plurality of bosses (13) arranged on the inner surface of the housing body (12), wherein the housing body (12) and the plurality of bosses (13) define a motor mounting hole (11); A stator core (3) located in the motor mounting hole (11); A damping sleeve (2) is located in the motor mounting hole (11) between the motor housing (1) and the stator core (3), the inner surface of the damping sleeve (2) abuts against the stator core (3), the outer surface of the damping sleeve (2) abuts against the plurality of bosses (13), and the outer surface of the damping sleeve (2) is provided with a plurality of mounting grooves (21) extending in the circumferential direction, the plurality of mounting grooves (21) are arranged in the axial direction of the damping sleeve (2) and are open grooves; and A plurality of damping rings (4) are arranged in a one-to-one correspondence in the plurality of mounting grooves (21) and cooperate with the corresponding mounting grooves (21); the damping rings (4) are open rings, and the openings of the plurality of open grooves and the openings of the plurality of open rings are arranged in a straight line along the axial direction of the damping sleeve (2); The damping sleeve (2) is connected to the motor housing (1) via a first connecting key (7), wherein the first connecting key (7) is located in a sleeve outer keyway (22) at the opening of the damping ring (4) and the opening of the damping sleeve (2) on the outer surface of the damping sleeve (2) and in a housing inner keyway (131) located on one of the bosses (13).

2. The motor according to claim 1, characterized in that The damping sleeve (2) is made of a damping alloy.

3. The motor according to claim 2, characterized in that The damping alloy is a manganese-copper alloy.

4. The motor according to claim 2, characterized in that The thickness of the damping sleeve (2) is 16 mm-30 mm.

5. The electric machine according to any one of claims 1 to 4, characterized in that The surface of the mounting groove (21) that cooperates with the damping ring (4) and / or the surface of the damping ring (4) that cooperates with the mounting groove (21) has a microstructure for increasing surface roughness.

6. The electric machine according to any one of claims 1 to 4, characterized in that The installation groove (21) has a depth of 3 mm to 6 mm and a width of 2 mm to 5 mm.

7. The electric machine according to any one of claims 1 to 4, characterized in that There is a pre-tightening force between the damping ring (4) and the mounting groove (21).

8. The electric machine according to any one of claims 1 to 4, characterized in that The outer surface of the damping sleeve (2) is a cylindrical surface, a plurality of the bosses (13) extend along the axial direction of the motor housing (1) and are evenly distributed along the circumference of the motor housing (1), and the surface of each boss (13) abutting against the damping sleeve (2) is a cylindrical surface with an arc-shaped cross section that matches the outer surface of the damping sleeve (2).

9. The electric machine according to any one of claims 1 to 4, characterized in that The damping sleeve (2) and the plurality of bosses (13) are in interference fit; and / or The damping sleeve (2) and the stator core (3) are in interference fit.

10. The electric machine according to any one of claims 1 to 4, characterized in that The damping sleeve (2) and the stator core (3) are connected via a second connecting key (8).

11. The motor according to claim 10, characterized in that The motor further comprises a first limiting portion (5) for limiting the axial position of the first connecting key (7) along the damping sleeve (2), and a second limiting portion (6) for limiting the axial position of the second connecting key (8) along the damping sleeve (2).

12. A compressor, comprising a compressor body and a motor drivingly connected to a rotor of the compressor body to drive the rotor of the compressor body to rotate, characterized in that: The electric motor is the electric motor according to any one of claims 1 to 11.

13. A refrigeration system, characterized in that: Comprising the compressor as claimed in claim 12.

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