WO2023087573A1

WO2023087573A1 - Insulating framework, stator, motor, compressor and refrigeration appliance

Info

Publication number: WO2023087573A1
Application number: PCT/CN2022/079419
Authority: WO
Inventors: 毛临书; 邱小华
Original assignee: 广东美芝制冷设备有限公司
Priority date: 2021-11-19
Filing date: 2022-03-04
Publication date: 2023-05-25
Also published as: CN114069928A

Abstract

The present invention provides an insulating framework, a stator, a motor, a compressor and a refrigeration appliance. The insulating framework is used for the stator, and comprises an insulating yoke and an insulating tooth which are connected. The insulating tooth is used for configuring a stator winding. The insulating tooth comprises a blank section, a first limiting section and a first wire slot. The first limiting section is arranged between the insulating yoke and the blank section. The first wire slot is formed in the first limiting section, and a first part of the stator winding is located in the first wire groove. In the present application, the insulating tooth is not only provided with a first wire slot that restrains the stator winding, but is also provided with a blank section that provides wire arranging freedom for the stator winding. The first wire slot is arranged to realize accurate positioning in the wire arranging process of the stator winding. The blank section provides greater wire arranging freedom. On the premise that the wire is accurately arranged, the wire arranging difficulty of the stator winding is significantly reduced, and the universality and the application scope of the insulating framework are improved.

Description

Insulation frame, stator, motor, compressor and refrigeration equipment

This application claims the priority of the Chinese patent application with the application number "202111376076.0" and the title of the invention "insulation frame, stator, motor, compressor and refrigeration equipment" submitted to the China Patent Office on November 19, 2021, the entire content of which Incorporated in this application by reference.

technical field

The present application relates to the technical field of motors, in particular, to an insulating frame, a stator, a motor, a compressor and a refrigeration device.

Background technique

At present, due to the high slot-fill rate of the block motor, it has been used more and more in the field of motors, and the high slot-fill rate is mainly due to the fact that the segmented motor has a lower wiring than a more integral motor structure. The language can be more neat, so that more magnet wires can be placed in the slot of the same area.

On this basis, in order to further improve the slot full rate, it is often used to improve the uniformity of the motor's cable arrangement. The specific method is: the way of setting wire slots on the insulating frame of the motor, so that all the first wires in the winding can be arranged in the corresponding wire slots, so as to ensure that the wires of the motor are arranged more neatly.

However, when each wire of the first row of wires has a corresponding wire slot on the insulating frame, and each magnet wire needs to be wound into the wire slot by means of machinery and equipment, this has a large impact on the diameter of each magnet wire. The requirements are relatively high. It is necessary to ensure that the wire diameter of each electromagnetic wire must match the corresponding slot size in order to arrange the wires better. At the same time, the precision of the winding is also very high. The machine equipment needs to arrange all the electromagnetic wires. In order to ensure that the magnet wires can be arranged better after the second layer, they must be placed in the corresponding slots.

That is to say, at present, the wire slots corresponding to the magnet wires are set on the insulation frame, which requires high matching dimensions between the magnet wires and the wire slots, limits the universal range of the insulation frame, and requires high precision in the winding process. Once the magnetic wire does not correspond to the slot, it will lead to a series of mismatches in the follow-up, which will directly affect the normal wiring of other layers.

Contents of the invention

This application aims to solve at least one of the technical problems existing in the prior art or related art.

Therefore, the first aspect of the present application is to propose an insulating frame.

A second aspect of the present application consists in proposing a stator.

The third aspect of the present application is to provide an electric motor.

The fourth aspect of the present application is to provide a compressor.

The fifth aspect of the present application is to provide a refrigeration device.

In view of this, according to the first aspect of the present application, an insulating frame is provided, wherein the insulating frame is used for the stator, the insulating frame includes an insulating yoke and an insulating tooth, the insulating tooth is connected to the insulating yoke, and the insulating tooth The part is used to set the stator winding of the stator, wherein the insulating tooth part includes a blank section, a first limiting section and a first wire slot, and the first limiting section is arranged between the insulating yoke and the blank section. The first slot is arranged in the first limiting section, and the first part of the stator winding is located in the first slot.

The insulating frame provided by this application is used for the stator, the stator includes a stator core and a stator winding, the insulating frame is arranged on the stator core, the stator winding is arranged on the insulating frame, and the insulating frame can form insulation between the stator winding and the stator core barrier. The stator core is a segmented stator core, and the stator core includes a plurality of core blocks, and each core block is spliced. For each core block, it has a connected yoke and a tooth, the insulating skeleton includes a connected insulating yoke and an insulating tooth, the shape of the insulating yoke and the insulating tooth are respectively adapted to the yoke of the core block parts and teeth, thus providing reliable insulation performance for the core block. Further, the insulated teeth are used to wind the stator windings, that is, the stator windings are wound on the insulated teeth, and along the winding of the stator winding, the insulated teeth include the head end and the end of the wires, that is, the windings can be wound along the In the direction from the head end of the cable to the end of the cable, it is wound on the insulating tooth part. Specifically, the insulating tooth part includes a blank section and a first limiting section, and the first limiting section is connected between the blank section and the insulating yoke, so that the stator winding starts winding from the end of the insulating tooth section close to the insulating yoke, Then the first limiting section is the head end of the cable. Since the first slot is provided in the first limiting section, when the magnet wire of the stator winding starts to be arranged, the magnet wire can be embedded at the beginning of the cable arrangement. In the first slot, the magnet wire is constrained and positioned accurately at the initial stage of wiring. In the subsequent wiring process, the blank section provides the wiring position for the electromagnetic wire, and there is no structure that constrains the electromagnetic wire in the blank section, that is, the blank section is a flat position, embedded in the first end of the cable. Some of the magnet wires in the first line slot are used as the wiring reference, and the subsequent magnet wires can rely on the wiring reference to constrain each other to achieve positioning. The degree of freedom of wiring is high, the difficulty of wiring is low, and the versatility is high. In this application, the insulated teeth not only have the first wire slots that constrain the stator windings, but also have blank sections that provide the stator windings with a degree of freedom in wiring. By setting the first wire slots, the precise positioning of the stator windings during the wiring process is provided. The blank section provides a higher degree of freedom for wiring. On the premise of ensuring accurate wiring, it significantly reduces the difficulty of stator winding wiring, improves the versatility and application range of the insulating frame, and at the same time, simplifies the insulation. The skeleton structure is convenient for processing and preparation.

It is worth noting that the ends of the magnet wires of the stator winding are used to cooperate with the first wire slot, that is, only a part of the wire diameter of the magnet wire needs to be considered to match the size of the first wire slot, which is less demanding and easy to popularize and apply.

In a possible technical solution, further, the first wire slot is a first straight slot, and the angle α between the center line of the first straight slot and the center line of the insulating tooth part is not equal to 90°.

In this technical solution, the first wire groove is the first straight groove, and the first straight groove is a groove body extending along a straight line, which is adapted to the characteristics of the magnet wire and facilitates the insertion of the magnet wire into the first straight groove. Wherein, the centerline of the first straight groove is the extending direction of the first straight groove. Wherein, because the shape of the insulating tooth portion is adapted to the shape of the tooth portion of the iron core block, the tooth portion includes a tooth root and a tooth shoe, and the tooth root is in a regular shape, such as a rectangle. Corresponding to the tooth root position, the insulating toothing then also has a center line of the insulating toothing parallel to the center line of the tooth root.

Among them, the center line of the first straight slot is the extension direction of the magnet wire in the first limiting section. When the center line of the first straight slot is not perpendicular to the center line of the insulating tooth, it indicates that the magnet wire is not perpendicular. Installed on the insulated tooth part, there can be a gap between the electromagnetic wire and the insulated yoke part, preventing a large extrusion force between the insulated yoke part or other insulated parts during the wiring process, which is easy to cause pulling and lead to insulation damage phenomenon.

In a possible technical solution, further, the angle α between the centerline of the first straight groove and the centerline of the insulating tooth part satisfies 80°≤α<90°.

In this technical solution, the center line of the first straight slot and the center line of the insulating tooth part meet the above angle range, which not only ensures the fullness of the slot, but also ensures a certain gap between the electromagnetic wire and the insulating yoke to prevent the wire from being arranged. During the process, there is a large extrusion force between the insulating yoke or other insulating parts, which is easy to cause pulling and damage to the insulation, so that it can be avoided while arranging as many wires as possible on the insulating teeth. Extrusion of the winding leads to damage to the insulation.

In a possible technical solution, further, the insulating yoke includes a yoke inner edge line facing the insulating tooth portion, the yoke inner edge line and the center line of the insulating tooth portion are located in the same plane, and form an included angle β, which satisfies 80 °≤β≤100°.

In this technical solution, the insulating yoke has a yoke inner edge line facing the insulating tooth, that is, the inner side of the insulating yoke has a yoke inner edge line, and the yoke inner edge line and the center line of the insulating tooth are located in the same plane. It can be the first plane extending along the axial direction, or the second plane perpendicular to the axial direction. When the angle between the inner edge line of the yoke and the center line of the insulating tooth part satisfies the above range, it is determined that the insulating yoke is relatively The relative position of the insulating teeth, and then the insulating yoke and the insulating teeth can form an ideal winding space for the stator winding, which is convenient for machines and equipment to wind, ensures winding efficiency, and simplifies winding difficulty.

In a possible technical solution, further, the insulating tooth part further includes a second limiting section and a second slot, and the second limiting section is arranged at an end of the blank section away from the insulating yoke. The second wire groove is arranged on the second limiting section, and the second wire groove is used for accommodating the second part of the stator winding.

In this technical solution, the insulating tooth part further includes a second limiting section and a second slot, the first limiting section is set at the first end of the blank section close to the insulating yoke, and the second limiting section is set at the blank section away from the first end of the insulating yoke. The second segment of a limiting segment, when the first limiting segment is the first end of the cable, the second limiting segment is the end of the cable, by setting the second slot on the second limiting segment, the first Both the head end and the end of the magnet wire on the first layer can be constrained by the first wire slot and the second wire slot respectively, so for the first layer of wiring, the head end of the magnet wire is fixed in the first wire slot and will not be in the first wire slot. Sliding in the first wire slot, the subsequent magnet wires will be arranged based on the first wire, and the end magnet wires will be fixed through the second wire slot, so as to ensure that the first layer of wires is arranged neatly and fixedly, and at the same time it can also be used for The second layer of cable arrangement provides a good foundation to achieve better cable arrangement and ensure that the motor cable arrangement is neat, thereby increasing the slot fill rate of the motor and improving the performance and capability of the motor.

Among them, the stator winding is obtained by winding the electromagnetic wire, wherein, a part of the electromagnetic wire is wound on the first limiting section of the insulated tooth part, and is located in the first slot, that is, this part of the electromagnetic wire is the stator winding. first part.

Then, the magnet wire continues to be wound on the blank section of the insulated tooth portion, after the winding of the blank section is completed.

Then, another part of the magnet wire is wound on the second limiting section of the insulated teeth, and is located in the second slot, that is, this part of the magnet wire is the second part of the stator winding.

Under the constraints of the first wire slot and the second wire slot, the first layer of wires located at the insulated tooth part is neatly and fixedly arranged, which can provide a good foundation for the second layer of wires, achieve better wires, and ensure motor arrangement The lines are neat, thereby increasing the slot fullness of the motor and improving the performance and capability of the motor.

In a possible technical solution, further, the insulating tooth portion further includes a stopper section connected to the second limiting section, and the stopper section and the insulating yoke are located on the same side of the blank section.

In this technical solution, the insulating tooth part also includes a stop section, which is set at the end of the second limiting section away from the blank section, that is, for the insulating tooth part, the point from the head end of the cable to the end of the cable Direction, including the connected first limit section, blank section, second limit section and stop section in turn, the stator winding is set on the first limit section, blank section and second limit section, the stop section 1. The insulating yoke is used to prevent the stator winding from protruding from the first limiting section, the second limiting section and the blank section, so as to ensure the positional stability of the stator winding.

Further, the stopper section and the insulating yoke are located on the same side in the axial direction of the blank section, thereby forming a position-preventing structure on both sides. The insulating skeleton is in the shape of a groove with an opening on one side of the axial direction as a whole, and the stator winding A part is located in the winding space formed by the insulating skeleton.

In a possible technical solution, further, the second wire groove and the first wire groove are arranged in parallel.

In this technical solution, the first wire slot and the second wire slot are arranged in parallel, so that the arrangement of the magnet wires is more compact and reliable, that is, the extension direction of the magnet wires in the first layer of wiring is consistent and the arrangement is compact.

At the same time, the second wire slot and the first wire slot extending in the same direction can reduce the manufacturing difficulty and reduce the manufacturing cost.

In a possible technical solution, further, the number of the first wire slot is at least one; the number of the second wire slot is at least one.

In this technical solution, the number of the first wire slot and/or the second wire slot can be one or more, and corresponding settings are made according to actual wire arrangement requirements. For example, the number of the first wire slots is the same as that of the second wire slots, or the number of the first wire slots is different from the number of the second wire slots.

Specifically, when there are multiple first wire slots or second wire slots, the distances between two adjacent first wire slots may be equal or different. Likewise, the distances between two adjacent second slots can be equal or different.

According to the second aspect of the present application, a stator is provided, including the insulating frame provided by any of the above designs, and the stator winding, the stator winding is arranged on the insulating tooth part of the insulating frame, and a part of the stator winding is located on the insulating tooth part Inside the first trunking.

The stator provided by the present application includes the insulating frame provided by any of the above-mentioned designs, so it has all the beneficial effects of the insulating frame, and will not be repeated here.

Further, the stator also includes a stator winding, the stator winding includes a plurality of magnet wires, a part of the plurality of magnet wires is located in the first wire slot, the first wire slot is used to fix the magnet wire, prevent the magnet wire from moving, and is located in the first wire slot. The magnet wire in the groove is used as a reference, which can facilitate the subsequent arrangement of the magnet wire.

In a possible technical solution, further, the stator winding includes a first magnet wire accommodated in a first wire slot, and at least a part of the first magnet wire is embedded in the first wire slot.

In this technical solution, the stator winding includes a first magnet wire located in the first wire slot, and the first magnet wire is wound as a head end of the stator winding. The first magnet wires are all located in the first slot along the length direction. From another point of view, that is, the wire diameter of the first magnet wire, at least a part of the first magnet wire is located in the first slot, that is, in the axial direction, a part of the first magnet wire is located in the first slot Inside, the other part of the first magnet wire is exposed in the first slot, so as to better provide a wiring reference for the subsequent wiring of the first layer of wiring and the second layer of wiring.

In a possible technical solution, further, the maximum outer diameter of the first magnet wire is D1, a part of the first magnet wire is located in the first wire slot, and another part of the first magnet wire passes through the first wire slot The notch is exposed, and the protruding height H of the other part of the first magnet wire satisfies 0.3D1≤H≤0.9D1.

In this technical solution, in the axial direction, a part of the first magnet wire is located in the first slot, and another part of the first magnet wire is located outside the first slot, by making the embedded part and the exposed part of the first magnet wire It is partly associated with the maximum outer diameter of the first magnet wire. On the one hand, it can ensure that the first magnet wire can be stably embedded in the first wire slot, preventing the first magnet wire from being easily inserted from the first wire slot due to too little embedded part. On the other hand, it prevents the first magnet wire from being embedded too deep and cannot be an effective wiring reference for subsequent wiring, and also prevents the first wire slot from being too deep to occupy too much space for the stator core, resulting in The overall axial height of the stator is too high, which is not conducive to the development trend of thinner and smaller products.

In a possible technical solution, further, the insulating frame includes a first frame and a second frame, and the axial height of the blank section of the insulating frame is D2. The stator also includes slot insulation. The slot insulation is arranged between the first frame and the second frame. The slot insulation and the first frame and the second frame form an insulation cavity. The axial height of the slot insulation is D4. The stator core is located in the insulating cavity, and the axial height of the stator core is D3, wherein, 0.1D2≤(D4-D3)≤2D2 is satisfied.

In this technical solution, the insulating frame includes a first frame and a second frame, the first frame and the second frame are respectively arranged at both axial ends of the stator core, and the first frame and the second frame provide the axial direction of the stator core. Insulated ends. There is slot insulation between the first skeleton and the second skeleton, the slot insulation, the first skeleton and the second skeleton can form an insulation cavity, the stator core is located in the insulation cavity, the thickness of the slot insulation is smaller than the thickness of the insulation skeleton, and the insulation is ensured Under the premise of improving performance, the space in the stator slot in the stator core is avoided as much as possible, so that more stator windings can be accommodated in a single stator slot. Among them, the slot insulation and the insulating frame overlap in the axial direction, and the insulating frame is pressed on the slot insulation, which can not only realize the positioning of the slot insulation, but also ensure the overall insulation performance of the insulating cavity.

Wherein, the position used for winding in the insulating tooth portion of the insulating skeleton includes a first limiting section, a second limiting section and a blank section, since the first limiting section and the second limiting section are respectively provided with first The wire slot and the second wire slot, then the axial height of the blank section is the maximum height D2 of the part of the insulating tooth portion used for winding. When the heights of the stator core, the slot insulation and the blank section meet the above range, it can ensure the reliable insulation of the stator core, thereby ensuring the performance and efficiency of the motor.

In a possible technical solution, further, the axial height D2 of the blank section satisfies 1mm≤D2≤6mm.

In this technical solution, the axial height of the blank section satisfies the above range, which can minimize the unnecessary increase in the overall axial height of the stator on the premise of meeting the insulation requirements of the stator core.

According to a third aspect of the present application, a motor is provided, including the stator provided by any of the above-mentioned designs.

The motor provided by the present application includes the stator provided by any of the above-mentioned designs, so it has all the beneficial effects of the stator, and will not be repeated here.

According to a fourth aspect of the present application, a compressor is provided, including the motor provided by any of the above-mentioned designs.

The compressor provided by the present application includes the motor provided by any of the above-mentioned designs, so it has all the beneficial effects of the motor, and will not be repeated here.

According to a fifth aspect of the present application, a refrigeration device is provided, including the motor or the compressor provided by any of the above-mentioned designs.

The refrigerating equipment provided by the present application includes the motor or compressor provided by any of the above-mentioned designs, so it has all the beneficial effects of the motor or compressor, and will not be repeated here.

Additional aspects and advantages of the application will become apparent in the description which follows, or may be learned by practice of the application.

Description of drawings

The above and/or additional aspects and advantages of the present application will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, wherein:

Fig. 1 shows a schematic structural view of an insulating skeleton according to a first embodiment of the present application;

FIG. 2 shows a schematic diagram of a three-dimensional structure of an insulating skeleton according to an embodiment of the present application;

Figure 3 shows a side view of an insulating frame according to an embodiment of the present application;

FIG. 4 shows a schematic structural view of an insulating skeleton according to a second embodiment of the present application;

Fig. 5 shows a schematic structural diagram of an insulating skeleton according to a third embodiment of the present application;

Fig. 6 shows a schematic structural diagram of an insulating skeleton according to a fourth embodiment of the present application;

Fig. 7 shows a schematic diagram of a three-dimensional structure of a stator according to an embodiment of the present application;

Fig. 8 shows a schematic structural view of a stator according to an embodiment of the present application;

Fig. 9 shows a schematic structural diagram of a motor according to an embodiment of the present application;

Fig. 10 shows a comparison chart of the motor efficiency and the click efficiency in the related art according to one embodiment of the present application;

Fig. 11 shows a schematic structural diagram of a compressor according to an embodiment of the present application.

Wherein, the corresponding relationship between reference numerals and component names in Fig. 1 to Fig. 11 is:

100 insulating frame, 101 first frame, 102 second frame,

110 insulating yoke,

120 insulated teeth,

121 blank paragraph,

122 first limit segment,

123 first trunking,

124 second limit segment,

125 second trunking,

126 stop section,

200 stator,

210 stator winding, 211 first magnet wire,

220 slot insulation,

230 stator core,

300 motor, 310 rotor core, 320 magnet,

400 compressors, 410 power units, 420 rotating shafts.

Detailed ways

In order to better understand the above-mentioned purpose, features and advantages of the present application, the present application will be further described in detail below in conjunction with the accompanying drawings and specific embodiments. It should be noted that, in the case of no conflict, the embodiments of the present application and the features in the embodiments can be combined with each other.

In the following description, many specific details are set forth in order to fully understand the application, but the application can also be implemented in other ways different from those described here, therefore, the protection scope of the application is not limited by the specific details disclosed below. EXAMPLE LIMITATIONS.

The following describes an insulating frame 100 , a stator 200 , a motor 300 , a compressor 400 and a refrigeration device according to some embodiments of the present application with reference to FIGS. 1 to 11 .

According to the first aspect of the present application, as shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, some embodiments of the present application provide an insulating frame 100, wherein the insulating frame 100 is used For the stator 200, the insulating frame 100 includes an insulating yoke 110 and an insulating tooth 120, the insulating tooth 120 is connected to the insulating yoke 110, and the insulating tooth 120 is used to set the stator winding 210 of the stator 200, wherein the insulating tooth 120 includes The blank section 121 , the first limiting section 122 and the first wire slot 123 , the first limiting section 122 is disposed between the insulating yoke 110 and the blank section 121 . The first wire slot 123 is disposed on the first limiting section 122 , and the first part of the stator winding 210 is located in the first wire slot 123 .

The insulating frame 100 provided by this application is used for the stator 200, the stator 200 includes a stator core 230 and a stator winding 210, the insulating frame 100 is set on the stator core 230, the stator winding 210 is set on the insulating frame 100, the insulating frame 100 can be An insulation barrier is formed between the stator winding 210 and the stator core 230 . The stator core 230 is a segmented stator core 230, and the stator core 230 includes a plurality of core blocks, and each core block is spliced. For each core block, it has a connected yoke and a tooth. The insulating frame 100 includes a connected insulating yoke 110 and an insulating tooth 120. The shapes of the insulating yoke 110 and the insulating tooth 120 are respectively adapted to The yoke and teeth of the core block provide reliable insulation for the core block. Further, the insulated tooth portion 120 is used to wind the stator winding 210, that is, the stator winding 210 is wound on the insulated tooth portion 120, and along the winding wire of the stator winding 210, the insulated tooth portion 120 includes the head end of the winding wire and the winding wire The end, that is, the winding can be wound on the insulating tooth portion 120 along the direction from the head end of the cable to the end of the cable. Specifically, the insulating tooth portion 120 includes a blank section 121 and a first limiting section 122, and the first limiting section 122 is connected between the blank section 121 and the insulating yoke portion 110, so that the stator winding 210 is insulated from the insulating tooth section 120. One end of the yoke portion 110 starts winding, and the first limiting section 122 is the first end of the wire arrangement. Since the first wire slot 123 is provided in the first limiting section 122, when the electromagnetic wire of the stator winding 210 starts to be arranged , then the magnet wire can be embedded in the first wire groove 123 at the beginning of the wire arrangement, so that the magnet wire is constrained and accurately positioned at the initial stage of the wire arrangement. In the subsequent wiring process, the blank section 121 provides a wiring position for the electromagnetic wire, and there is no structure that constrains the electromagnetic wire in the blank section 121, that is, the blank section 121 is a flat position, and is embedded at the head end of the cable. Part of the magnet wires arranged in the first slot 123 is used as a wiring reference, and the subsequent magnet wires can rely on the wiring reference to constrain each other to achieve positioning. The degree of freedom of wiring is high, the difficulty of wiring is low, and the versatility is high. In this application, the insulated tooth part 120 not only has the first wire slot 123 that constrains the stator winding 210, but also has a blank section 121 that provides the stator winding 210 with a degree of freedom of wire arrangement. By setting the first wire slot 123, the stator winding 210 row Accurate positioning during the wiring process provides a higher degree of freedom for wiring through the blank section 121. On the premise of ensuring accurate wiring, it significantly reduces the difficulty of wiring the stator winding 210 and improves the versatility and application of the insulating skeleton 100. At the same time, the structure of the insulating skeleton 100 can also be simplified to facilitate processing and preparation.

It is worth noting that the end of the magnet wire of the stator winding 210 is used to cooperate with the first wire slot 123, that is, only a part of the wire diameter of the magnet wire needs to be considered to match the size of the first wire slot 123, which is relatively low and easy to Promote apps.

Further, as shown in FIG. 1 , the first wire slot 123 is a first straight slot, and the angle α between the center line M of the first straight slot and the center line N of the insulating tooth portion 120 is not equal to 90°.

In this embodiment, the first wire groove 123 is a first straight groove, and the first straight groove is a groove extending along a straight line, which is adapted to the characteristics of the magnet wire and facilitates the insertion of the magnet wire into the first straight groove. Wherein, the centerline M of the first straight groove is the extending direction of the first straight groove. Wherein, since the insulating tooth portion 120 is adapted to the shape of the tooth portion of the iron core block, the tooth portion includes a tooth root and a tooth shoe, and the tooth root is in a regular shape, such as a rectangle. Corresponding to the tooth root position, the insulating tooth 120 then also has a center line N of the insulating tooth 120 parallel to the center line of the tooth root.

Wherein, the center line M of the first straight groove is represented as the extending direction of the magnet wire in the first limiting section 122, and when the center line M of the first straight groove is not perpendicular to the center line N of the insulating tooth portion 120, it indicates that The magnet wire is not vertically arranged on the insulating tooth part 120, so that there is a gap between the magnet wire and the insulating yoke part 110, so as to prevent a large extrusion force between the magnet wire and the insulating yoke part 110 or other insulating parts during the wiring process , and it is easy to cause pulling, resulting in damage to the insulation.

Further, as shown in FIG. 1 , the angle α between the centerline M of the first straight groove and the centerline N of the insulating tooth portion 120 satisfies 80°≤α<90°.

In this embodiment, the center line M of the first straight slot and the center line N of the insulating tooth portion 120 satisfy the above-mentioned angle range, which not only ensures the fullness of the slot, but also ensures a certain gap between the magnet wire and the insulating yoke portion 110 , to prevent the large extrusion force between the insulating yoke 110 or other insulating parts during the wiring process, which is easy to cause pulling and damage the insulation, so that as many cables as possible can be arranged on the insulating tooth 120 At the same time, it can also avoid the phenomenon of insulation damage caused by winding extrusion.

Further, as shown in FIG. 1 , the insulating yoke 110 includes a yoke inner edge line O facing the insulating tooth portion 120, the yoke inner edge line O and the center line N of the insulating tooth portion 120 are located in the same plane and form an included angle β , satisfying 80°≤β≤100°.

In this embodiment, the insulating yoke portion 110 has a yoke inner edge line O facing the insulating tooth portion 120, that is, the inner side of the insulating yoke portion 110 has a yoke inner edge line O, and the yoke inner edge line O is aligned with the center line of the insulating tooth portion 120. N is located in the same plane, which can be a first plane extending along the axial direction, or a second plane perpendicular to the axial direction, when the angle between the inner edge line O of the yoke and the centerline N of the insulating tooth portion 120 If the above range is met, the relative position of the insulating yoke 110 relative to the insulating tooth 120 is determined, and an ideal winding space can be formed for the stator winding 210 through the insulating yoke 110 and the insulating tooth 120, which facilitates winding of machines and equipment , to ensure winding efficiency and simplify winding difficulty.

Further, as shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. The white segment 121 is away from one end of the insulating yoke 110 . The second slot 125 is disposed on the second limiting section 124 , and the second slot 125 is used for accommodating the second part of the stator winding 210 .

In this embodiment, the insulating tooth portion 120 further includes a second limiting section 124 and a second slot 125, the first limiting section 122 is arranged at the first end of the blank section 121 close to the insulating yoke 110, the second limiting section 124 is located in the second section of the blank section 121 away from the first limiting section 122. When the first limiting section 122 is the head end of the cable, the second limiting section 124 is the end of the cable. The second wire groove 125 is set on the section 124, so that the head end and the end of the electromagnetic wire of the first layer can be respectively restrained by the first wire groove 123 and the second wire groove 125, so for the first layer of wiring, the electromagnetic The head end of the wire is fixed in the first wire slot 123, and will not slide in the first wire slot 123, the subsequent magnet wire will be arranged based on the first wire, and the end magnet wire will be fixed through the second wire slot 125, In this way, it can ensure that the first layer of cables is arranged neatly and fixedly, and at the same time, it can provide a good foundation for the second layer of cables, realize better cable arrangement, ensure that the motor 300 is neatly arranged, and thus improve the slot fill rate of the motor 300 , improving the motor 300 performance and capability.

Wherein, the stator winding 210 is obtained by winding an electromagnetic wire, wherein a part of the electromagnetic wire is wound on the first limiting section 122 of the insulating tooth portion 120 and is located in the first slot 123, that is, this part of the electromagnetic wire is is the first part of the stator winding 210 .

Next, the magnet wire continues to be wound on the blank section 121 of the insulating tooth portion 120 , after the winding of the blank section 121 is completed.

Then, another part of the magnet wire is wound on the second limiting section 124 of the insulating tooth portion 120 and located in the second slot 125 , that is, this part of the magnet wire is the second part of the stator winding 210 .

Under the constraints of the first wire slot 123 and the second wire slot 125, the first layer of wires located in the insulating tooth portion 120 is neatly and fixedly arranged, which can provide a good foundation for the second layer of wires and achieve better wires. It is ensured that the motor 300 is neatly arranged, thereby increasing the slot fullness rate of the motor 300 and improving the performance and capability of the motor 300 . Further, as shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7 and FIG. The segment 124 is connected, and the stop segment 126 and the insulating yoke 110 are located on the same side of the blank segment 121 .

In this embodiment, the insulating tooth portion 120 further includes a stop section 126, which is arranged at the end of the second limiting section 124 away from the blank section 121, that is, for the insulating tooth portion 120, the stop section 126 is formed by the cable head The end points to the direction of the end of the cable, and sequentially includes the first limiting section 122, the blank section 121, the second limiting section 124 and the stop section 126, and the stator winding 210 is arranged on the first limiting section 122, the blank section On segment 121 and second limiting segment 124, stop segment 126 and insulating yoke 110 are used to prevent stator winding 210 from protruding from first limiting segment 122, second limiting segment 124 and blank segment 121, ensuring that stator winding 210 positional stability.

Furthermore, the stopper section 126 and the insulating yoke 110 are located on the same side of the blank section 121 in the axial direction, thereby forming a position-preventing structure on both sides. , a part of the stator winding 210 is located in the winding space formed by the insulating frame 100 .

Further, as shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 and FIG. 6 , the second wire slot 125 and the first wire slot 123 are arranged in parallel.

In this embodiment, the first wire slot 123 and the second wire slot 125 are arranged in parallel, so that the arrangement of the magnet wires is more compact and reliable, that is, the extension direction of the magnet wires in the first layer of wiring is consistent and the arrangement is compact.

At the same time, the second wire groove 125 and the first wire groove 123 extending in the same direction can reduce the manufacturing difficulty and reduce the manufacturing cost.

Further, as shown in FIG. 1 , FIG. 2 , FIG. 3 , FIG. 4 , FIG. 5 and FIG. 6 , the number of the first wire slot 123 is at least one; the number of the second wire slot 125 is at least one.

In this embodiment, the number of the first wire slot 123 and/or the second wire slot 125 can be one or more, and corresponding settings are made according to actual wire arrangement requirements. For example, the number of the first wire slots 123 is the same as the number of the second wire slots 125 , or the number of the first wire slots 123 is different from the number of the second wire slots 125 .

Specifically, when there are multiple first wire slots 123 or second wire slots 125 , the distances between two adjacent first wire slots 123 may be equal or different. Likewise, the distances between two adjacent second slots 125 can be equal or different.

According to the second aspect of the present application, as shown in Figure 7 and Figure 8, some embodiments of the present application provide a stator 200, including the insulating skeleton 100 provided by any of the above designs, and the stator winding 210, the stator winding 210 is disposed on the insulating tooth portion 120 of the insulating frame 100 , and a part of the stator winding 210 is located in the first slot 123 of the insulating tooth portion 120 .

The stator 200 provided in the present application includes the insulating frame 100 provided by any of the above-mentioned designs, so it has all the beneficial effects of the insulating frame 100 and will not be repeated here.

Further, as shown in FIG. 9, the stator 200 also includes a stator winding 210, the stator winding 210 includes a plurality of magnet wires, a part of the plurality of magnet wires is located in the first wire slot 123, and the first wire slot 123 is used to fix the electromagnetic wire. To prevent the magnet wire from moving, the magnet wire located in the first wire groove 123 is used as a reference, which can facilitate the subsequent arrangement of the magnet wire.

Further, the stator winding 210 includes a plurality of magnet wires, the number of the magnet wires arranged in the first layer among the plurality of magnet wires is at least one more than the number of wire slots, and the number of wire slots is the first wire slot 123 and the second wire slot 123. The total number of slots 125. The first layer of magnet wire is the first row of wires.

Further, as shown in FIG. 3 , the stator winding 210 includes a first magnet wire 211 accommodated in the first wire slot 123 , and at least a part of the first magnet wire 211 is embedded in the first wire slot 123 .

In this embodiment, the stator winding 210 includes a first magnet wire 211 located in the first slot 123, and the first magnet wire 211 is wound as the head end of the stator winding 210. The first magnet wires 211 are located in the first slot 123 along the length direction. From another point of view, that is, the wire diameter of the first magnet wire 211, at least a part of the first magnet wire 211 is located in the first slot 123, that is, in the axial direction, a part of the first magnet wire 211 is located in the In the first slot 123 , another part of the first magnet wire 211 is exposed to the first slot 123 , so as to better provide a wiring reference for the subsequent wiring of the first layer of wiring and the second layer of wiring.

Further, the maximum outer diameter of the first magnet wire 211 is D1, a part of the first magnet wire 211 is located in the first wire slot 123, and the other part of the first magnet wire 211 passes through the notch of the first wire slot 123 and is exposed. , the protrusion height H of another part of the first magnet wire 211 satisfies 0.3D1≤H≤0.9D1.

In this embodiment, in the axial direction, a part of the first magnet wire 211 is located in the first wire slot 123, and another part of the first magnet wire 211 is located outside the first wire slot 123, by making the first magnet wire 211 The embedded part and the exposed part of the first magnet wire 211 are associated with the maximum outer diameter. On the one hand, it can ensure that the first magnet wire 211 can be stably embedded in the first wire slot 123, preventing the If it is too small, it is easy to come out of the first wire groove 123. On the other hand, it can prevent the first magnet wire 211 from being embedded too deep and cannot be an effective wiring reference for subsequent wiring. Excessive accommodating space for the stator core 230 causes the problem that the overall axial height of the stator 200 is too high, which is not conducive to the development trend of thinner and smaller products.

Further, as shown in FIG. 8 , the insulating frame 100 includes a first frame 101 and a second frame 102 , and the axial height of the blank section 121 of the insulating frame 100 is D2. The stator 200 also includes a slot insulation 220, the slot insulation 220 is arranged between the first skeleton 101 and the second skeleton 102, the slot insulation 220 forms an insulation cavity with the first skeleton 101 and the second skeleton 102, and the axial height of the slot insulation 220 is D4. The stator core 230 is located in the insulating cavity, and the axial height of the stator core 230 is D3, wherein, 0.1D2≤(D4-D3)≤2D2 is satisfied.

In this embodiment, the insulating frame 100 includes a first frame 101 and a second frame 102, the first frame 101 and the second frame 102 are respectively arranged at the axial ends of the stator core 230, the first frame 101 and the second frame 102 provides axial end insulation of the stator core 230 . A slot insulation 220 is provided between the first frame 101 and the second frame 102, the slot insulation 220, the first frame 101 and the second frame 102 can form an insulation cavity, the stator core 230 is located in the insulation cavity, and the thickness of the slot insulation 220 is less than The thickness of the insulating frame 100 avoids encroaching on the space in the stator 200 slot of the stator core 230 as much as possible under the premise of ensuring the insulation performance, so that more stator windings 210 can be accommodated in a single stator 200 slot. The slot insulation 220 and the insulating framework 100 overlap in the axial direction, and the insulating framework 100 is pressed on the slot insulation 220, which can not only realize the positioning of the slot insulation 220, but also ensure the overall insulation performance of the insulation cavity.

Wherein, the position for winding in the insulating tooth portion 120 of the insulating frame 100 includes a first limiting section 122, a second limiting section 124 and a blank section 121, because the first limiting section 122, the second limiting section 124 is respectively provided with a first wire slot 123 and a second wire slot 125 , then the axial height of the blank section 121 is the maximum height D2 of the part of the insulating tooth portion 120 used for winding wires. When the heights of the stator core 230 , the slot insulation 220 and the blank section 121 meet the above range, reliable insulation of the stator core 230 can be ensured, thereby ensuring the performance and efficiency of the motor 300 .

Further, the axial height D2 of the blank section 121 satisfies 1mm≤D2≤6mm.

In this embodiment, the axial height of the blank section 121 satisfies the above range, which can minimize unnecessary increase in the overall axial height of the stator 200 on the premise of meeting the insulation requirements of the stator core 230 .

Wherein, the insulating frame 100 includes a connected insulating yoke 110 and an insulating tooth 120. The shapes of the insulating yoke 110 and the insulating tooth 120 are respectively adapted to the yoke and the tooth of the core block, so as to provide reliable support for the core block. insulation properties. Further, the insulated tooth portion 120 is used to wind the stator winding 210, that is, the stator winding 210 is wound on the insulated tooth portion 120, and along the winding wire of the stator winding 210, the insulated tooth portion 120 includes the head end of the winding wire and the winding wire The end, that is, the winding can be wound on the insulating tooth portion 120 along the direction from the head end of the cable to the end of the cable. Specifically, the insulating tooth portion 120 includes a blank section 121 and a first limiting section 122, and the first limiting section 122 is connected between the blank section 121 and the insulating yoke portion 110, so that the stator winding 210 is insulated from the insulating tooth section 120. One end of the yoke 110 starts winding, and the first limiting section 122 is the head end of the wire arrangement. Since the first wire slot 123 is arranged in the first limiting section 122, when the electromagnetic wire of the stator winding 210 starts to be arranged , then the magnet wire can be embedded in the first wire groove 123 at the beginning of the wire arrangement, so that the magnet wire is constrained and accurately positioned at the initial stage of the wire arrangement. In the subsequent wiring process, the blank section 121 provides a wiring position for the electromagnetic wire, and there is no structure that constrains the electromagnetic wire in the blank section 121, that is, the blank section 121 is a flat position, and is embedded at the head end of the cable. Part of the magnet wires arranged in the first slot 123 is used as a wiring reference, and the subsequent magnet wires can rely on the wiring reference to constrain each other to achieve positioning. The degree of freedom of wiring is high, the difficulty of wiring is low, and the versatility is high. In this application, the insulated tooth part 120 not only has the first wire slot 123 that constrains the stator winding 210, but also has a blank section 121 that provides the stator winding 210 with a degree of freedom of wire arrangement. By setting the first wire slot 123, the stator winding 210 row Accurate positioning during the wiring process provides a higher degree of freedom for wiring through the blank section 121. On the premise of ensuring accurate wiring, it significantly reduces the difficulty of wiring the stator winding 210 and improves the versatility and application of the insulating skeleton 100. At the same time, the structure of the insulating skeleton 100 can also be simplified to facilitate processing and preparation.

Further, as shown in FIG. 1 , the first wire groove 123 is a first straight groove, and the first straight groove is a groove extending along a straight line, which is adapted to the characteristics of the magnet wire and facilitates the insertion of the magnet wire into the first straight groove. Wherein, the centerline M of the first straight groove is the extending direction of the first straight groove. Wherein, since the insulating tooth portion 120 is adapted to the shape of the tooth portion of the iron core block, the tooth portion includes a tooth root and a tooth shoe, and the tooth root is in a regular shape, such as a rectangle. Corresponding to the tooth root position, the insulating tooth 120 then also has a center line N of the insulating tooth 120 parallel to the center line of the tooth root.

Further, as shown in FIG. 1 , the centerline M of the first straight slot and the centerline N of the insulating tooth portion 120 meet the above-mentioned angle range, which not only ensures the fullness of the slot, but also ensures the gap between the magnet wire and the insulating yoke portion 110. There is a certain gap to prevent the large extrusion force between the insulating yoke 110 or other insulating parts during the wiring process, which is easy to cause pulling and damage the insulation, so that as much as possible on the insulating tooth 120 While arranging the ground wire, it can also avoid the phenomenon of insulation damage caused by winding extrusion.

Further, as shown in FIG. 1 , the insulating yoke portion 110 has a yoke inner edge line O facing the insulating tooth portion 120, that is, the inner side of the insulating yoke portion 110 has a yoke inner edge line O, and the yoke inner edge line O is connected to the insulating tooth portion 120. The centerline N of the yoke is located in the same plane. This plane can be a first plane extending along the axial direction, or a second plane perpendicular to the axial direction. The included angle satisfies the above range, thereby determining the relative position of the insulating yoke 110 relative to the insulating tooth 120, and then an ideal winding space can be formed for the stator winding 210 through the insulating yoke 110 and the insulating tooth 120, which is convenient for machine equipment Perform winding to ensure winding efficiency and simplify winding difficulty.

Further, as shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5 and FIG. The white section 121 is close to the first end of the insulating yoke 110, and the second limiting section 124 is set at the second section of the blank section 121 away from the first limiting section 122. When the first limiting section 122 is the head end of the cable, Then the second limiting section 124 is the end of the cable. By setting the second wire groove 125 on the second limiting section 124, the head end and the end of the electromagnetic wire of the first layer can be respectively received by the first wire groove 123, Constrained by the second wire slot 125, then for the first layer of wiring, the head end of the magnet wire is fixed in the first wire slot 123 and will not slide in the first wire slot 123, and the subsequent magnet wires will be based on the first wire slot. Wires are arranged, and the electromagnetic wires at the end will be fixed through the second wire groove 125, so as to ensure that the first layer of wires is arranged neatly and fixedly, and at the same time, it can also provide a good foundation for the second layer of wires to achieve better Arrange the wires to ensure that the wires of the motor 300 are neatly arranged, thereby increasing the slot fill rate of the motor 300 and improving the performance and capability of the motor 300.

Further, as shown in FIG. 1, FIG. 2, FIG. 3, FIG. 4, FIG. 5, FIG. 6, FIG. 7 and FIG. The end of the bit section 124 away from the blank section 121, that is, for the insulating tooth part 120, the direction from the head end of the cable to the end of the cable, includes the connected first limiting section 122, the blank section 121, the second The limit section 124 and the stop section 126, the stator winding 210 is arranged on the first limit section 122, the blank section 121 and the second limit section 124, the stop section 126 and the insulating yoke 110 are used to prevent the stator winding 210 from It escapes from the first limiting section 122 , the second limiting section 124 and the blank section 121 to ensure the positional stability of the stator winding 210 .

Further, as shown in Fig. 1, Fig. 2, Fig. 3, Fig. 4, Fig. 5 and Fig. 6, the first wire groove 123 and the second wire groove 125 are arranged in parallel, so that the arrangement of the magnet wires is more compact and reliable, that is, the first The extension direction of the electromagnetic wires in the layer wiring is consistent and the arrangement is compact.

Further, as shown in Figure 1, Figure 2, Figure 3, Figure 4, Figure 5 and Figure 6, the number of the first wire slot 123 and/or the second wire slot 125 can be one or more, according to the actual wiring requirements Make corresponding settings. For example, the number of the first wire slots 123 is the same as the number of the second wire slots 125 , or the number of the first wire slots 123 is different from the number of the second wire slots 125 .

According to the third aspect of the present application, some embodiments of the present application provide a motor 300, including the stator 200 provided by any of the above-mentioned designs.

The motor 300 provided in the present application includes the stator 200 provided by any of the above-mentioned designs, so it has all the beneficial effects of the stator 200 and will not be repeated here. As shown in FIG. 10 , the stator 200 provided by any of the above designs can effectively improve the efficiency of the motor 300 . The efficiency of the motor in the related art is 94.5%, while the efficiency of the motor in the present application is increased to 94.75%.

Further, the motor 300 further includes a rotor, and the rotor includes a rotor core 310 and a magnet 320 , and the magnet 320 is embedded in the rotor core 310 and rotates synchronously relative to the stator 200 .

According to the fourth aspect of the present application, as shown in FIG. 11 , some embodiments of the present application provide a compressor 400, including the motor 300 provided by any of the above designs.

The compressor 400 provided in the present application includes the motor 300 provided by any of the above-mentioned designs, and thus has all the beneficial effects of the motor 300 , which will not be repeated here.

Wherein, the compressor 400 also includes a rotating shaft 420 and a power part 410, the rotating shaft 420 is installed in the rotor, the rotating shaft 420 is connected with the rotor, the power part 410 is connected with the rotating shaft 420, and the power part 410 is configured to drive the rotating shaft 420 to rotate, thereby driving The rotor turns.

According to the fifth aspect of the present application, some embodiments of the present application provide a refrigeration device, including the motor 300 or the compressor 400 provided by any of the above-mentioned designs.

The refrigerating equipment provided by the present application includes the motor 300 or the compressor 400 provided by any of the above-mentioned designs, so it has all the beneficial effects of the motor 300 or the compressor 400 and will not be repeated here.

In this application, the term "plurality" means two or more, unless otherwise clearly defined. The terms "installation", "connection", "connection", "fixed" and other terms should be interpreted in a broad sense, for example, "connection" can be fixed connection, detachable connection, or integral connection; "connection" can be directly or indirectly through an intermediary. Those of ordinary skill in the art can understand the specific meanings of the above terms in this application according to specific situations.

In the description of this specification, descriptions of the terms "one embodiment", "some embodiments", "specific embodiments" and the like mean that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in this application In at least one embodiment or example of . In this specification, schematic representations of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials or characteristics described may be combined in any suitable manner in any one or more embodiments or examples.

The above descriptions are only preferred embodiments of the present application, and are not intended to limit the present application. For those skilled in the art, there may be various modifications and changes in the present application. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of this application shall be included within the protection scope of this application.

Claims

An insulating frame, wherein the insulating frame is used for a stator, and the insulating frame includes:

insulating yoke;

an insulating tooth portion connected to the insulating yoke portion, and the insulating tooth portion is used for setting a stator winding of the stator, wherein the insulating tooth portion includes:

blank space;

The first limiting section is arranged between the insulating yoke and the blank section;

The first wire slot is arranged in the first limiting section, and the first part of the stator winding is located in the first wire slot.
The insulating skeleton according to claim 1, wherein,

The first wire slot is a first straight slot, and the angle α between the center line of the first straight slot and the center line of the insulating tooth portion is not equal to 90°.
The insulating skeleton according to claim 2, wherein,

The angle α between the centerline of the first straight groove and the centerline of the insulating tooth part satisfies 80°≤α<90°.
The insulating skeleton according to claim 1, wherein,

The insulating yoke part includes a yoke inner edge line facing the insulating tooth part, the yoke inner edge line and the center line of the insulating tooth part are located in the same plane, and form an included angle β, which satisfies 80°≤β≤ 100°.
The insulating frame according to any one of claims 1 to 4, wherein the insulating tooth part further comprises:

The second limiting section is arranged at an end of the blank section away from the insulating yoke;

The second wire groove is arranged on the second limiting section, and the second wire groove is used for accommodating the second part of the stator winding.
The insulating frame according to claim 5, wherein the insulating tooth part further comprises:

The stop section is connected to the second limiting section, and the stop section and the insulating yoke are located on the same side of the blank section.
The insulating skeleton according to claim 5, wherein,

The second wire groove and the first wire groove are arranged in parallel.
The insulating skeleton according to claim 5, wherein,

The number of the first wire slot is at least one; the number of the second wire slot is at least one.
A stator, comprising: the insulating frame according to any one of claims 1 to 8; and

The stator winding is arranged on the insulating tooth part of the insulating frame, and a part of the stator winding is located in the first slot of the insulating tooth part.
The stator of claim 9, wherein:

The stator winding includes a first magnet wire accommodated in the first wire slot, at least a part of the first magnet wire is embedded in the first wire slot.
The stator of claim 10, wherein:

The maximum outer diameter of the first magnet wire is D1, a part of the first magnet wire is located in the first wire slot, and the other part of the first magnet wire passes through the notch of the first wire slot In the exposed configuration, the protruding height H of the other part of the first electromagnetic wire satisfies 0.3D1≤H≤0.9D1.
The stator of claim 9, wherein:

The insulating frame includes a first frame and a second frame, and the axial height of the blank section of the insulating frame is D2;

The stator also includes:

The slot insulation is arranged between the first skeleton and the second skeleton, the slot insulation forms an insulation cavity with the first skeleton and the second skeleton, and the axial height of the slot insulation is D4;

The stator core is located in the insulating cavity, and the axial height of the stator core is D3, wherein,

0.1D2≤(D4-D3)≤2D2.
The stator of claim 12, wherein:

The axial height D2 of the blank section satisfies 1mm≤D2≤6mm.
A motor, comprising: the stator according to any one of claims 9-13.
A compressor, comprising: the motor as claimed in claim 14.
A refrigeration device, comprising: the motor as claimed in claim 14, or the compressor as claimed in claim 15.