WO2022142464A1

WO2022142464A1 - Stator, motor, compressor and refrigeration device

Info

Publication number: WO2022142464A1
Application number: PCT/CN2021/117818
Authority: WO
Inventors: 徐飞; 邱小华; 江波
Original assignee: 安徽美芝精密制造有限公司
Priority date: 2020-12-28
Filing date: 2021-09-10
Publication date: 2022-07-07
Also published as: CN112737156A

Abstract

The present disclosure relates to the technical field of motors, and specifically relates to a stator, a motor, a compressor and a refrigeration device. The stator comprises a stator iron core, stator windings, a lead-out wire and a retainer; the stator iron core comprises a yoke portion and a plurality of stator teeth, a stator slot is defined between every two adjacent stator teeth and the yoke portion, and the stator iron core has a first end surface and a second end surface; the stator windings each comprise a first portion, a second portion and a third portion, the first portion and the second portion being located outside the stator slot. The retainer comprises a first retaining portion, a second retaining portion, and a third retaining portion, the first retaining portion being arranged on the first end surface, the first retaining portion covering at least part of the first portion, and the second retaining portion being arranged on the second end surface. At least part of the third retaining portion is arranged in the stator slot, the third retaining portion has a first end portion and a second end portion, and two end portions of the third retaining portion are respectively connected to the first retaining portion and the second retaining portion. A motor using the stator has advantages of low vibration noise and high efficiency.

Description

Stators, Motors, Compressors and Refrigeration Equipment

CROSS-REFERENCE TO RELATED APPLICATIONS

The present disclosure claims the priority and rights of the Chinese patent application with application number 202011581709.7 and filing date on December 28, 2020, the entire contents of the above Chinese patent application are hereby incorporated into the present disclosure by reference.

technical field

The present disclosure relates to the technical field of electric motors, in particular to stators, electric motors, compressors and refrigeration equipment.

Background technique

Rotary compressors in the related art generally use built-in permanent magnet motors for their motors. In recent years, with the increase of motor power density, higher requirements are placed on the vibration and noise of motors, and the previous motors are increasingly unable to meet the requirements. The need for silence.

SUMMARY OF THE INVENTION

The present disclosure is made based on the inventors' findings and knowledge of the following facts and problems:

At present, the stator iron core of the motor is formed as a whole by pressing the stator punching pieces and various fasteners, for example, the stator punching pieces are connected by riveting in the axial direction. The vibration noise of the motor is caused by the following reasons:

1. Due to the low rigidity of the connection between the stator punching pieces, the rigidity of the stator core is low, which in turn causes the motor including the stator to generate large vibration and noise during operation.

2. When the electromagnetic force acts on the tooth shoe of the stator core, the electromagnetic force will be transmitted outward along the tooth shoe, tooth and yoke of the stator core, resulting in the deformation of the outer edge of the stator core. It also leads to a higher noise radiation during operation of the motor including the stator.

3. During the manufacturing process of the stator, for example, when the stator and the compressor casing are in interference fit, assembly stress will be generated. The gap between the rotors is uneven, which eventually leads to the deterioration of vibration and noise of the motor including the stator during operation; on the other hand, the assembly stress increases the core loss of the stator, which ultimately reduces the efficiency of the motor including the stator.

The present disclosure aims to solve one of the technical problems in the related art at least to a certain extent.

To this end, an aspect of the present disclosure provides a stator to reduce vibration noise of a motor including the stator and improve the efficiency of the motor including the stator.

Another aspect of the present disclosure provides a motor to reduce vibration noise of the motor and improve the efficiency of the motor.

Still another aspect of the present disclosure provides a compressor to reduce vibration noise of the compressor and improve the efficiency of the compressor.

Yet another aspect of the present disclosure provides refrigeration equipment to reduce vibration noise of the refrigeration equipment and improve the efficiency of the refrigeration equipment.

A stator according to an embodiment of the present disclosure includes a stator core, the stator core includes a body, the body includes a yoke and a plurality of stator teeth, and a stator is defined between two adjacent stator teeth and the yoke a slot, wherein the stator core has a first end face and a second end face opposite in its axial direction;

a stator winding, the stator winding is wound on the stator teeth, the stator winding includes a first part, a second part and a third part, the first part and the second part are located outside the stator slot, the third portion is located within the stator slot;

a lead wire, the lead wire is electrically connected to the first part;

A holder, the holder comprising:

A first holding part and a second holding part, the first holding part is provided on the first end surface, the first holding part covers at least a part of the first part, and the second holding part is provided on the said second end face; and

A third holding portion, at least a part of which is provided in the stator slot, the third holding portion has a first end portion and a second end opposite in the axial direction of the stator core part, the first end of the third holding part is connected to the first holding part, and the second end of the third holding part is connected to the second holding part.

The stator according to the embodiment of the present disclosure has the advantages that the vibration noise of the motor including the stator can be reduced, and the efficiency of the motor including the stator can be improved.

In some embodiments, the second retaining portion covers at least a portion of the second portion.

In some embodiments, the third retaining portion covers at least a portion of the third portion.

In some embodiments, there are a plurality of the third holding parts, and the plurality of the third holding parts fill the plurality of the stator slots in a one-to-one correspondence, so as to cover the third part, wherein the first A part of the three holding parts protrudes inwardly from the stator slot in the direction from the yoke part to the stator teeth, and the inner edge of the part of the third holding part is located at the tooth shoe part of the stator tooth. Outside of the inner edge, the inner edge of the part of the third holding portion is located inside the outer edge of the tooth shoe portion of the stator teeth.

In some embodiments, the outer edge of the first holding portion is located inside the outer edge of the yoke portion, and the outer edge of the second holding portion is located inside the outer edge of the yoke portion.

Optionally, each of the first holding portion and the second holding portion is annular, the outer diameter of the first holding portion is smaller than the outer diameter of the yoke portion, and the second holding portion is The outer diameter of the yoke is smaller than the outer diameter of the yoke.

In some embodiments, the inner edge of the third retaining portion is located outside the inner edge of the stator teeth.

In some embodiments, the retainer is integrally injection molded.

A motor according to an embodiment of the present disclosure includes a stator, the stator includes a stator core, the stator core includes a body, the body includes a yoke and a plurality of stator teeth, two adjacent stator teeth and the yoke A stator slot is defined between the parts, wherein the stator core has a first end face and a second end face opposite in its axial direction;

a lead wire, the lead wire is electrically connected to the first part;

A holder, the holder comprising:

The motor according to the embodiment of the present disclosure has the advantages of reducing the vibration noise of the motor and improving the efficiency of the motor.

In some embodiments, the retainer is integrally injection molded.

A compressor according to an embodiment of the present disclosure includes an electric motor, the electric motor includes a stator, the stator includes a stator iron core, and the stator iron core includes a body including a yoke and a plurality of stator teeth, two adjacent ones of which are A stator slot is defined between the stator teeth and the yoke, wherein the stator core has a first end face and a second end face opposite in the axial direction thereof;

a lead wire, the lead wire is electrically connected to the first part;

A holder, the holder comprising:

The compressor according to the embodiment of the present disclosure has the advantages of reducing the vibration noise of the compressor and improving the efficiency of the compressor.

In some embodiments, the retainer is integrally injection molded.

A refrigeration apparatus according to an embodiment of the present disclosure includes a compressor, the compressor includes a motor, the motor includes a stator, the stator includes a stator iron core, and the stator iron core includes a body including a yoke and a plurality of stator teeth, a stator slot is defined between two adjacent stator teeth and the yoke, wherein the stator iron core has a first end face and a second end face opposite in the axial direction;

a lead wire, the lead wire is electrically connected to the first part;

A holder, the holder comprising:

The refrigeration equipment according to the embodiments of the present disclosure has the advantages of reducing vibration and noise of the refrigeration equipment, improving the efficiency of the refrigeration equipment, and the like.

In some embodiments, the retainer is integrally injection molded.

Description of drawings

FIG. 1 is a schematic structural diagram of a stator according to an embodiment of the present disclosure (a holder is not shown).

2 is a perspective view of a stator core according to one embodiment of the present disclosure.

3 is a top view of a stator core according to one embodiment of the present disclosure.

FIG. 4 is a schematic structural diagram of a stator according to an embodiment of the present disclosure.

FIG. 5 is a schematic structural diagram of a compressor according to an embodiment of the present disclosure.

Reference numerals: stator 1; stator core 10; body 110; yoke 101; outer edge 1011; stator teeth 102; teeth 1021; tooth shoe 1022; inner edge 1023; outer edge 1024; stator slot 103; One end face 104 (1101); second end face 105 (1102);

stator winding 20; first part 201; second part 202; third part 203;

holder 30; first holder 301; outer edge 3011; second holder 302; outer edge 3021; third holder 303; first end 3031; second end 3032; inner edge 3033;

pinout 40;

Compressor 100; Motor 1000; Housing 1001; Rotor 1002; Crankshaft 1003; Main bearing 1004; Cylinder 1005; Piston 1006;

Detailed ways

Embodiments of the present disclosure are described in detail below, examples of which are illustrated in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary, and are intended to explain the present disclosure and should not be construed as a limitation of the present disclosure.

As shown in FIGS. 1-4 , the stator 1 according to the embodiment of the present disclosure includes a stator core 10 , a stator winding 20 , a lead wire 40 and a holder 30 . The stator core 10 includes a body 110 , the body 110 includes a yoke 101 and a plurality of stator teeth 102 , a stator slot 103 is defined between two adjacent stator teeth 102 and the yoke 101 , and the stator winding 20 is wound around the stator teeth 102 . superior. Among them, the stator core 10 has a first end surface 104 and a second end surface 105 opposite to each other in the axial direction thereof. The stator winding 20 includes a first part 201 , a second part 202 and a third part 203 , the first part 201 and the second part 202 are located outside the stator slot 103 , and the third part 203 is located in the stator slot 103 . The lead wire 40 is electrically connected to the first part 201 .

As shown in FIG. 4 , the holder 30 includes a first holding part 301 , a second holding part 302 and a third holding part 303 , the first holding part 301 is provided on the first end face 104 , and the first holding part 301 covers the first part At least a part of 201 , the second holding portion 302 is provided on the second end face 105 . At least a part of the third holding portion 303 is provided in the stator slot 103 , and the third holding portion 303 has a first end portion 3031 and a second end portion 3032 that are opposite to each other in the axial direction of the stator core 10 , and the third holding portion 303 The first end portion 3031 of the third holding portion 303 is connected to the first holding portion 301 , and the second end portion 3032 of the third holding portion 303 is connected to the second holding portion 302 .

The stator core in the prior art is formed as a whole by pressing the stator punching pieces and various fasteners, for example, the stator punching pieces are connected by riveting in the axial direction. First, due to the low rigidity of the connection between the stator punching pieces, the rigidity of the stator iron core is low, which in turn causes the motor including the stator to generate relatively large vibration and noise during operation. Secondly, when the electromagnetic force acts on the tooth shoe of the stator core, the electromagnetic force will be transmitted outward along the tooth shoe, tooth and yoke of the stator core, resulting in the deformation of the outer edge of the stator core. It also leads to a higher noise radiation during operation of the motor including the stator. Finally, during the manufacturing process of the stator, for example, when the stator and the compressor casing are in an interference fit, assembly stress will be generated. On the one hand, the inward transmission of assembly stress will cause the inner diameter of the stator core to deform, and cause the stator and the motor of the motor to be deformed. The gap between the rotors is uneven, which eventually leads to the deterioration of vibration and noise of the motor including the stator during operation; on the other hand, the assembly stress increases the core loss of the stator, which ultimately reduces the efficiency of the motor including the stator.

The stator 1 according to the embodiment of the present disclosure provides the first holding portion 301 on the first end face 104 of the body 110 of the stator core 10 and the second holding portion 302 on the second end face 105 , and the first holding portion 301 The second holding part 302 is connected with the third holding part 303 so that the holding member 30 is integrated. As a result, the first holding portion 301 and the second holding portion 302 can be used to clamp (press) the plurality of stator punches of the stator iron core 10 in the axial direction of the stator iron core 10 , so that the plurality of stator iron cores 10 can be significantly increased. The connection rigidity of the stator punching pieces further significantly improves the rigidity of the stator core 10 .

In this way, not only the vibration noise caused by the low connection rigidity of the plurality of stator punching pieces of the stator core 10 can be significantly reduced or even eliminated, but also the deformation of the yoke 101 under the action of electromagnetic force can be significantly reduced or even eliminated (for example, the deformation of the outer peripheral surface of the stator iron core 10 ), and significantly reduce or even eliminate the deformation caused by assembling the stator 1 (for example, the deformation of the inner diameter of the stator iron core 10 , that is, the inner peripheral surface of the stator iron core 10 ) Vibration noise caused by deformation).

In addition, by significantly improving the rigidity of the stator core 10, the deformation of the stator core 10 can be significantly reduced or even eliminated, so that the stress iron loss caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, so that the The efficiency of the motor including the stator 1 is substantially improved.

Therefore, by using the stator 1 according to the embodiment of the present disclosure, the vibration noise of the motor including the stator 1 can be reduced, and the efficiency of the motor including the stator 1 can be improved.

As shown in FIGS. 1-4 , the stator 1 according to the embodiment of the present disclosure includes a stator core 10 , a stator winding 20 , a lead wire 40 and a holder 30 .

The stator core 10 includes a body 110 including a yoke 101 and a plurality of stator teeth 102 . The plurality of stator teeth 102 includes a tooth portion 1021 and a tooth shoe portion 1022 . The first end face 104 and the second end face 105 of the stator iron core 10 are the opposite end faces of the body 110 in the axial direction of the stator iron core 10 . That is, the body 110 has a first end surface 1101 and a second end surface 1102 that are opposed to each other in the axial direction of the stator core 10 . The first end surface 1101 of the body 110 is the first end surface 104 of the stator core 10 , and the second end surface 1102 of the body 110 is the second end surface 105 of the stator core 10 . The axial direction of the stator core 10 is shown by arrow A in FIG. 1 .

Optionally, a plurality of stator teeth 102 are provided on the yoke 101 at intervals along the circumferential direction of the stator core 10 . A stator slot 103 is defined between two adjacent stator teeth 102 and the yoke 101 , that is, the stator core 10 has a plurality of stator slots 103 .

The lead wire 40 is electrically connected to the first portion 201 , whereby the lead wire 40 is disposed close to the first holding portion 201 .

The stator winding 20 is wound on the stator teeth 102 , and the stator winding 20 includes a first part 201 , a second part 202 and a third part 203 . The first part 201 and the second part 202 are located outside the stator slot 103 , and the third part 203 is located inside the stator slot 103 . For example, the first part 201 extends upward from the stator slot 103, the second part 202 extends downward from the stator slot 103, the first end face 104 is the upper surface of the stator iron core 10 (body 110), and the second end face 105 is the stator iron On the lower surface of the core 10 (the main body 110 ), the axial direction of the stator core 10 coincides with the vertical direction. The up-down direction is shown by arrow B in FIG. 2 .

As shown in FIG. 4 , the holder 30 includes a first holding portion 301 , a second holding portion 302 and a third holding portion 303 . The first holding portion 301 is provided on the first end face 104 , and the second holding portion 302 is provided on the second holding portion 301 . on the end face 105. The third holding portion 303 has a first end portion 3031 and a second end portion 3032 that are opposite to each other in the axial direction of the stator core 10 , the first end portion 3031 of the third holding portion 303 is connected to the first holding portion 301 , and the third holding portion 303 The second end portion 3032 of the holding portion 303 is connected to the second holding portion 302 .

For example, the first holding portion 301 is located above the second holding portion 302 , the first holding portion 301 is provided on the upper end surface (the first end surface 104 ) of the stator core 10 , and the second holding portion 302 is provided on the upper end surface of the stator core 10 . on the lower end surface (the second end surface 105 ). The upper end portion of the third holding portion 303 is connected to the first holding portion 301 , and the lower end portion of the third holding portion 303 is connected to the second holding portion 302 .

In some embodiments, the retaining member 30 is integrally injection-molded, that is, the first retaining portion 301 , the second retaining portion 302 and the third retaining portion 303 are integrally injection-molded. The integral injection molding of the holder 30 is beneficial to further improve the connection rigidity of the plurality of stator punching pieces of the stator iron core 10 , thereby improving the rigidity of the stator iron core 10 . Thereby, not only can the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 .

Since the resin material is mixed by the optimum proportion of the specific material, ideal material rigidity and injection flow effect can be achieved, therefore, preferably, the holding member 30 is made of resin material.

Specifically, a plurality of stator punching sheets of the stator iron core 10 can be stacked together, then the stator winding 20 is wound on the stator iron core 10, and finally the holder 30 is integrally injection-molded on the stator iron core 10 and the stator iron core 10. on the stator winding 20.

As shown in FIG. 4 , by providing at least a part of the third holding portion 303 in the stator slot 103 , the third holding portion 303 can be added to the inner and outer directions of the stator core 10 perpendicular to the axial direction of the stator core 10 . The thickness of the first holding part 301 covers at least a part of the first part 201 , so that the thickness of the third holding part 303 can be increased in the axial direction of the stator core 10 , thereby improving the rigidity of the stator core 10 . Thereby, not only can the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 . In addition, when the holder 30 is integrally injection-molded, the difficulty of injection molding of the holder 30 can be reduced by making the first holder 301 cover at least a part of the first portion 201 .

In some embodiments, as shown in FIG. 4 , the second retaining portion 302 covers at least a portion of the second portion 202 . As a result, the thickness of the third holding portion 303 can be further increased in the axial direction of the stator core 10 , thereby enhancing the rigidity of the stator core 10 . Thereby, not only can the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 . In addition, when the holder 30 is integrally injection-molded, the difficulty of injection molding of the holder 30 can be reduced by covering at least a part of the second portion 202 with the second holder 302 .

Optionally, the third holding portion 303 covers at least a part of the third portion 203 of the stator winding 20 . In this way, the thickness of the third holding portion 303 can be increased in the inner and outer directions of the stator iron core 10 perpendicular to the axial direction of the stator iron core 10 , thereby improving the rigidity of the stator iron core 10 . Thereby, not only can the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 .

As shown in FIG. 4 , there are a plurality of third holding portions 303 , and the plurality of third holding portions 303 fill the plurality of stator slots 103 in a one-to-one correspondence so as to cover the third portion 203 . In other words, each stator slot 103 is filled with the third holding portion 303 . A part of the third holding part 303 protrudes inward from the stator slot 103 , the inner edge of a part of the third holding part 303 is located outside the inner edge 1023 of the tooth shoe part 1022 of the stator tooth 102 , the part of the third holding part 303 The inner edge of the tooth shoe 1022 is inboard of the outer edge 1024 . That is, the inner edge of a part of the third holding portion 303 is located between the inner edge 1023 (inner edge) and the outer edge 1024 (outer edge) of the shoe portion 1022 .

In this way, the thickness of the third holding portion 303 can be significantly increased in the inner and outer directions of the stator iron core 10 perpendicular to the axial direction of the stator iron core 10 , thereby enhancing the rigidity of the stator iron core 10 . Thereby, not only can the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 . In addition, when the holder 30 is integrally injection-molded, by making the third holder 303 fill the stator slot 103 , the injection molding difficulty of the holder 30 can be reduced.

As shown in FIG. 4 , the outer edge 3011 (outer edge) of the first holding portion 301 is located inside the outer edge 1011 of the yoke portion 101 , and the outer edge 3021 (outer edge) of the second holding portion 302 is located at the outer edge of the yoke portion 101 . Inside of 1011. Since the outer edge 1011 of the yoke portion 101 of the stator core 10 is to be in contact with the compressor housing when the stator 1 is assembled with the compressor housing, the outer edge 3011 of the first holding portion 301 is located at the outer edge of the yoke portion 101 . On the inner side of 1011, the outer edge 3021 of the second holding part 302 is located inside the outer edge 1011 of the yoke 101, which can avoid the outer edge 3011 of the first holding part 301 and the second The outer edge 3021 of the holding portion 302 is in direct contact with the casing of the compressor, so as to prevent the holding member 30 from being broken during assembly and generating dust, which in turn causes the compressor pump to block and malfunction, thereby affecting the refrigeration effect of the compressor.

Optionally, each of the first holding portion 301 and the second holding portion 302 is annular, the outer diameter of the first holding portion 301 is smaller than the outer diameter of the yoke portion 101 , and the outer diameter of the second holding portion 302 is smaller than The outer diameter of the yoke 101 . That is, in the inner and outer directions perpendicular to the axial direction of the stator core 10, the outer edge 3011 of the first holding portion 301 is located inside the outer edge 1011 of the yoke portion 101, and the outer edge 3021 of the second holding portion 302 is located in the yoke The inner side of the outer edge 1011 of the part 101 .

By making each of the first holding portion 301 and the second holding portion 302 an annular shape, the stator can be better clamped in the axial direction of the stator core 10 by the first holding portion 301 and the second holding portion 302 The plurality of stator punching pieces of the iron core 10 can significantly improve the connection rigidity of the plurality of stator punching pieces of the stator iron core 10 , thereby significantly improving the rigidity of the stator iron core 10 . Thereby, not only can the vibration noise caused by the low rigidity of the stator core 10 be significantly reduced or even eliminated, but also the vibration noise caused by the deformation of the stator core 10 can be significantly reduced or even eliminated, and the The stress iron loss due to the deformation of the stator core 10 is small or even eliminated, so as to significantly improve the efficiency of the electric machine including the stator 1 . In addition, when the holder 30 is integrally injection-molded, each of the first holding portion 301 and the second holding portion 302 is annular, which can reduce the difficulty of injection molding the holder 30 .

Optionally, the inner edge 3033 (inner edge) of the third holding portion 303 is located outside the inner edge 1024 (inner edge) of the tooth shoe portion 1022 of the stator teeth 102 . In this way, the inner edge 1023 of the tooth shoe portion 1022 of the stator teeth 102 is not covered by the third holding portion 303, which can not only prevent the third holding portion 303 from affecting the assembly of the rotor, but also allow the motor to dissipate heat better and prevent heat from being trapped in the motor. Accumulation, affecting the motor insulation system.

Wherein, inward refers to a direction adjacent to the central axis of the stator iron core 10 on a plane perpendicular to the axial direction of the stator iron core 10 , and outward refers to a direction away from the stator iron on a plane perpendicular to the axial direction of the stator iron core 10 . The direction of the central axis of the core 10 . The inside-out direction is shown by arrow C in FIG. 3 . When the stator 1 is assembled with the rotor, the inner edge is adjacent to the rotor relative to the outer edge.

As shown in FIG. 5 , the present disclosure also provides a motor 1000 . The motor 1000 according to the embodiment of the present disclosure includes the stator 1 according to the above-described embodiment of the present disclosure. Therefore, the motor 1000 according to the embodiment of the present disclosure has the advantages of low vibration noise and high efficiency.

It can be understood by those skilled in the art that the motor 1000 according to the embodiment of the present disclosure further includes a rotor 1002 . Taking the number of stator slots 104 of the stator 1 as Z, and the number of pole pairs of the rotor 1002 as P, the ratio of Z to 2P is equal to 3/2 or 6/5 or 6/7. The proportional relationship between the number Z of the stator slots 104 and the number of pole pairs P of the rotor is defined, and then the pole-slot fit of the motor 1000 is defined, wherein, when the number of pole pairs of the rotor 1002 is P, the number of poles of the rotor 1002 is 2P, That is, the motor 1000 can be a 6-pole 9-slot motor, a 4-pole 6-slot motor, an 8-pole 12-slot motor, and a 10-pole 12-slot motor. The above types of motors 1000 can effectively reduce the armature iron loss, increase the magnetic flux, and further improve the efficiency of the motor 1000 .

Preferably, the inner diameter of the stator core 10 is Di, the rated torque of the motor 1000 is T, and the torque per unit volume of the rotor 1002 is TPV, which satisfies the following relationship: 5.18×10-7≤T×Di-3×TPV- 1≤1.17×10-6, 5kN·m·m-3≤TPV≤45kN·m·m-3; wherein, the unit of rated torque T of motor 1000 is N·m, and the inner diameter Di of stator core 10 is The unit is mm, and the unit of the torque TPV per unit volume of the rotor 1002 is kN·m·m −3 .

In this embodiment, the rated torque of the motor 1000 is T, the inner diameter of the stator core 10 is Di, the torque per unit volume of the rotor 1002 is TPV, and satisfies 5.18×10-7≤T×Di-3×TPV- 1≤1.17×10-6, the value range of torque TPV per unit volume is 5kN·m·m-3≤TPV≤45kN·m·m-3, by limiting the rated torque T of the motor 1000, the stator iron core The value range of the combined variable of the inner diameter Di of 10 and the torque per unit volume TPV of the rotor 1002 enables the motor 1000 to meet the power requirements of the compressor. In addition, the motor 1000 and the compressor 100 using the rotor 1002 can effectively The magnetic flux leakage of the rotor 1002 is reduced, the utilization rate of the permanent magnet is increased, and the efficiency of the motor 1000 is improved.

Preferably, the side of the plurality of tooth shoe parts 103 facing the rotor forms the inner peripheral surface of the stator 1, and the ratio of the diameter of the inner peripheral surface of the stator 1 to the diameter of the outer edge of the stator core 10 is greater than 0.5 and less than or equal to 0.58 .

In this embodiment, the ratio of the diameter of the inner peripheral surface of the stator 1 to the diameter of the outer edge of the stator core 10 is greater than 0.5, and less than or equal to 0.57, so that the motor has higher cost performance.

The present disclosure also provides a compressor 100 . The compressor 100 according to the embodiment of the present disclosure includes the motor 1000 according to the above-described embodiment of the present disclosure.

Therefore, the compressor 100 according to the embodiment of the present disclosure has the advantages of low vibration noise and high efficiency.

Those skilled in the art can understand that, as shown in FIG. 5 , the compressor 100 according to the embodiment of the present disclosure further includes components such as a casing 1001 , a crankshaft 1022 , a main bearing 102 , a cylinder 103 , a piston 104 , and a secondary bearing 105 . Components such as the casing, the crankshaft 1022 , the main bearing 102 , the cylinder 103 , the piston 104 and the auxiliary bearing 105 may be known and are not related to the invention of the present application, so they will not be described in detail.

The present disclosure also provides refrigeration equipment. The refrigeration apparatus according to the embodiment of the present disclosure includes the compressor 100 according to the above-described embodiment of the present disclosure.

Using the gas drainage pipeline 100 of the embodiment of the present disclosure not only enables the sensor probe 3 to be accurately fixed on the pipe body 1 , but also facilitates the installation and removal of the sensor probe 3 .

In the description of the present disclosure, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", " Rear, Left, Right, Vertical, Horizontal, Top, Bottom, Inner, Outer, Clockwise, Counterclockwise, Axial, The orientations or positional relationships indicated by "radial direction", "circumferential direction", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present disclosure and simplifying the description, rather than indicating or implying the indicated devices or elements It must have, be constructed, and operate in a particular orientation, and therefore should not be construed as a limitation of the present disclosure.

In addition, the terms "first" and "second" are only used for descriptive purposes, and should not be construed as indicating or implying relative importance or implying the number of indicated technical features. Thus, a feature delimited with "first", "second" may expressly or implicitly include at least one of that feature. In the description of the present disclosure, "plurality" means at least two, such as two, three, etc., unless expressly and specifically defined otherwise.

In the present disclosure, unless otherwise expressly specified and limited, the terms "installed", "connected", "connected", "fixed" and other terms should be understood in a broad sense, for example, it may be a fixed connection or a detachable connection , or integrated; it can be a mechanical connection or an electrical connection or can communicate with each other; it can be directly connected or indirectly connected through an intermediate medium, it can be the internal connection of two components or the interaction relationship between the two components, unless otherwise expressly qualified. For those of ordinary skill in the art, the specific meanings of the above terms in the present disclosure can be understood according to specific situations.

In the present disclosure, unless expressly stated and defined otherwise, a first feature "on" or "under" a second feature may be in direct contact with the first and second features, or indirectly through an intermediary between the first and second features touch. Also, the first feature being "above", "over" and "above" the second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is level higher than the second feature. The first feature being "below", "below" and "below" the second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature has a lower level than the second feature.

In this disclosure, the terms "one embodiment," "some embodiments," "example," "specific example," or "some examples," etc., mean a specific feature, structure, material, or Features are included in at least one embodiment or example of the present disclosure. In this specification, schematic representations of the above terms are not necessarily directed to the same embodiment or example. Furthermore, the particular features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, those skilled in the art may combine and combine the different embodiments or examples described in this specification, as well as the features of the different embodiments or examples, without conflicting each other.

Although the embodiments of the present disclosure have been shown and described above, it should be understood that the above-described embodiments are exemplary and should not be construed as limitations of the present disclosure, and those of ordinary skill in the art may interpret the above-described embodiments within the scope of the present disclosure. Embodiments are subject to variations, modifications, substitutions and variations.

Claims

A stator, characterized in that it includes:

A stator iron core, the stator iron core includes a body, the body includes a yoke and a plurality of stator teeth, a stator slot is defined between two adjacent stator teeth and the yoke, wherein the stator iron the core has first and second end faces opposite in its axial direction;

a stator winding, the stator winding is wound on the stator teeth, the stator winding includes a first part, a second part and a third part, the first part and the second part are located outside the stator slot, the third portion is located within the stator slot;

a lead wire, the lead wire is electrically connected to the first part;

A holder, the holder comprising:

A first holding part and a second holding part, the first holding part is provided on the first end surface, the first holding part covers at least a part of the first part, and the second holding part is provided on the said second end face; and

A third holding portion, at least a part of which is provided in the stator slot, the third holding portion has a first end portion and a second end opposite in the axial direction of the stator core part, the first end of the third holding part is connected to the first holding part, and the second end of the third holding part is connected to the second holding part.
The stator of claim 1, wherein the second holding portion covers at least a portion of the second portion.
The stator of claim 2, wherein the third holding portion covers at least a portion of the third portion.
The stator according to claim 3, wherein there are a plurality of the third holding parts, and the plurality of the third holding parts fill the plurality of the stator slots in a one-to-one correspondence, so as to cover the first Three parts, wherein a part of the third retaining part protrudes inwardly from the stator slot in the direction from the yoke to the stator teeth, and the inner edge of the part of the third retaining part is located in the Outside the inner edge of the shoe portion of the stator teeth, the inner edge of the part of the third holding portion is positioned inside the outer edge of the shoe portion of the stator tooth.
The stator according to any one of claims 2-4, wherein the outer edge of the first holding portion is located inside the outer edge of the yoke portion, and the outer edge of the second holding portion is located at the inner side of the outer edge of the yoke portion. the inner side of the outer edge of the yoke;

Optionally, each of the first holding portion and the second holding portion is annular, the outer diameter of the first holding portion is smaller than the outer diameter of the yoke portion, and the second holding portion is The outer diameter of the yoke is smaller than the outer diameter of the yoke.
The stator according to any one of claims 2-5, wherein the inner edge of the third holding portion is located outside the inner edge of the stator teeth.
The stator according to any one of claims 2-6, wherein the holder is integrally injection-molded.
The motor is characterized by comprising a stator, and the stator is the stator according to any one of claims 1-7.
The compressor is characterized by comprising a motor, and the motor is the motor according to claim 8 .
The refrigeration equipment is characterized by comprising a compressor, and the compressor is the compressor according to claim 9 .