Stator assembly, motor and compressor

Abstract

The utility model relates to a stator assembly, a motor and a compressor, the stator assembly comprises a stator iron core, an insulation framework and slot insulation paper, the stator iron core comprises an annular stator yoke, the stator yoke extends towards the center of the stator yoke at intervals to form a plurality of stator teeth, and a stator slot is formed between every two adjacent stator teeth; the insulating framework comprises an insulating bone ring matched with the stator yoke, the insulating bone ring extends towards the center of the insulating bone ring at intervals to form a plurality of insulating steps matched with the stator teeth, and a through groove is formed between every two adjacent insulating steps; the two sides of the insulating step extend in the same direction to form insulating wrapping edges respectively, the insulating step abuts against the end face of the stator tooth, and the insulating wrapping edges on the two sides of the insulating step are arranged on the two sides of the stator tooth respectively. The stator slots and the through slots at the two axial ends of the stator slots jointly form winding slots, and the slot insulation paper is arranged on the inner walls of the winding slots in an attached mode. The height of the insulation step can be relatively designed to be smaller, so that the height of an invalid coil is reduced, and the performance loss of the motor is effectively reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a stator component, a motor and a compressor. Background Art

[0002] The existing brushless DC motor is generally composed of a stator, a rotor, an end cap and other components, wherein the rotor rotates around the rotating shaft, the stator and the rotor form a gap fit, the stator has a stator yoke in a ring shape centered on the rotating shaft, a plurality of stator teeth extending from the stator yoke in a ring shape to the rotor, two adjacent stator teeth are arranged at intervals to form a slot for copper wire winding, and insulating paper is arranged in the slot. The two axial ends of the stator are respectively covered with an insulating skeleton, so that each stator tooth and the insulating skeleton and insulating paper corresponding to the stator tooth are wound with a copper wire group. However, in order to ensure that there is enough insulation distance to improve its safety, the existing brushless DC motor usually adopts a method of increasing the steps of the insulating skeleton; in this way, although the insulation distance of the insulating skeleton is effectively increased, the height of the ineffective coil of the motor is also increased, resulting in an increase in the resistance of the motor, and the loss is also increased, thereby causing the performance of the motor to decrease. In addition, the fixing method of the existing slot insulating paper is unstable, and it is easy to produce displacement during the winding process, thereby reducing the insulation of the stator assembly, thereby reducing the safety of the motor. Utility Model Content

[0003] Based on this, the purpose of the utility model is to solve one of the technical problems existing in the prior art.

[0004] To this end, a first aspect of an embodiment of the utility model proposes a stator assembly.

[0005] A second aspect of the embodiments of the present utility model provides a motor.

[0006] A third aspect of the embodiments of the present utility model provides a compressor.

[0007] In view of this, a first aspect of an embodiment of the present utility model provides a stator assembly, comprising:

[0008] A stator core, the stator core comprising an annular stator yoke, a plurality of stator teeth extending from the stator yoke toward the center thereof, and a stator slot is formed between two adjacent stator teeth;

[0009] An insulating skeleton, the insulating skeleton comprising an insulating bone ring adapted to the stator yoke, the insulating bone ring extending toward the center thereof with a plurality of insulating steps adapted to the stator teeth at intervals, and a through groove formed between two adjacent insulating steps; insulating edges extending in the same direction from both sides of the insulating step, the insulating step abutting against the end face of the stator tooth, and the insulating edges on both sides of the insulating step are respectively arranged on both sides of the stator tooth;

[0010] Slot insulation paper, the two end faces of the stator core along its axial direction are symmetrically connected to the insulation frame respectively, the stator slot and the through slots at its two axial ends together form a winding slot, and the slot insulation paper is arranged close to the inner wall of the winding slot.

[0011] Therefore, the embodiment of the utility model provides insulating edges on both sides of the insulating step, so that when the insulating step abuts against the end face of the stator tooth, the insulating edges on both sides of the insulating step are respectively provided on both sides of the stator tooth, so that the insulating step has a better insulation effect on the stator tooth, and the height of the insulating step can be reduced. That is to say, under the condition of meeting the insulation performance of the stator assembly, the height of the insulating step of the embodiment of the utility model can be relatively designed to be smaller, thereby reducing the height of the ineffective coil and effectively reducing the performance loss of the motor.

[0012] As an implementation mode, grooves matching the insulating edgings on both sides of the insulating step are respectively provided on both sides of the stator tooth, and the insulating edgings on both sides of the insulating step are respectively provided in the grooves on both sides of the stator tooth. Therefore, the embodiment of the utility model provides grooves on both sides of the stator tooth, thereby enabling the insulating edgings of the insulating step to better match the stator tooth.

[0013] As an implementation mode, a stator end portion of the stator tooth away from the stator yoke extends toward the stator slots on both sides of the stator tooth, and two adjacent stator end portions are spaced apart to form a notch of the stator slot.

[0014] As an embodiment, inner guard teeth extend from one side of the insulating step away from the insulating bone ring toward the through grooves on both sides of the insulating step, two adjacent inner guard teeth are spaced apart, and the two adjacent inner guard teeth respectively abut against the stator ends below them.

[0015] As an implementation mode, the inner tooth guard extends out of the slot portion along the radial outward direction of the insulating bone ring, and flanges are respectively provided on both sides of the slot insulating paper, and the side walls of the two flanges are respectively abutted against the side walls of the respective adjacent stator ends, and the two ends of the two flanges are respectively inserted into the slot portions of the respective adjacent inner tooth guards. Therefore, the embodiment of the utility model provides a slot portion on the inner tooth guard to achieve the function of limiting and fixing the flanges of the slot insulating paper, so that one end of the two flanges of the slot insulating paper is respectively inserted into the slot portions of the respective adjacent inner tooth guards, and the other ends of the two flanges of the slot insulating paper are also the same; that is to say, the embodiment of the utility model limits and fixes the slot insulating paper through two insulating skeletons, which can effectively prevent the slot insulating paper from displacement.

[0016] As an implementation manner, the thickness of the insulating step is 1.5 mm.

[0017] As an embodiment, at least two fixing grooves are arranged at intervals on the end surface of the stator yoke, and a fixing column plugged into the fixing grooves is arranged on the end surface of the insulating bone ring abutting against the stator yoke. Therefore, the stator yoke and the insulating bone ring of the embodiment of the utility model adopt a plug-in connection method, which makes the connection between the two simple and quick.

[0018] As an implementation manner, a positioning groove is provided on the end surface of the stator tooth, and a positioning column plugged into the positioning groove is provided on the end surface of the insulating step abutting against the stator tooth.

[0019] The second aspect of the embodiment of the utility model provides a motor, the motor includes the stator assembly in any of the above technical solutions, and also includes a rotor assembly, the rotor assembly is coaxially arranged with the stator assembly, and the rotor assembly and the stator assembly form an air gap fit. In this technical solution, a motor provided with the stator assembly in any of the above technical solutions is defined, therefore, the motor has the advantages of the stator assembly in any of the above technical solutions, and can achieve the technical effects that can be achieved by the stator assembly in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0020] The third aspect of the embodiment of the utility model provides a compressor, the compressor includes the motor in any of the above technical solutions, therefore, the compressor has the advantages of the motor in any of the above technical solutions, and can achieve the technical effects that can be achieved by the motor in any of the above technical solutions. To avoid repetition, it will not be repeated here. In order to better understand and implement, the utility model is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a structural schematic diagram of a stator assembly of an embodiment of the utility model;

[0022] Figure 2 for Figure 1 An enlarged schematic diagram of section A is shown;

[0023] Figure 3 It is an exploded schematic diagram of a stator assembly of an embodiment of the utility model;

[0024] Figure 4 This is one of the structural schematic diagrams of the insulating skeleton of an embodiment of the utility model;

[0025] Figure 5 for Figure 4 An enlarged schematic diagram of portion B is shown;

[0026] Figure 6This is the second structural schematic diagram of the insulating frame of the embodiment of the utility model;

[0027] Figure 7 This is one of the structural schematic diagrams of the slot insulation paper of an embodiment of the utility model;

[0028] Figure 8 This is the second structural schematic diagram of the slot insulation paper according to an embodiment of the utility model.

[0029] Description of reference numerals:

[0030] 10. stator core; 11. stator yoke; 12. stator teeth; 13. stator end; 14. stator slot; 15. fixing slot; 16. positioning slot; 20. insulation frame; 21. insulation bone ring; 22. insulation step; 221. insulation edge; 23. inner tooth guard; 24. slot part; 25. through slot; 26. fixing column; 30. slot insulation paper; 31. flange; 40. winding slot. DETAILED DESCRIPTION

[0031] To further illustrate each embodiment, the present invention provides drawings. These drawings are part of the disclosure of the present invention, which are mainly used to illustrate the embodiments and can be used in conjunction with the relevant descriptions in the specification to explain the operating principles of the embodiments. With reference to these contents, ordinary technicians in the field should be able to understand other possible implementation methods and advantages of the present invention.

[0032] In the description of the present invention, it needs to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "left", "right", "top", "bottom", "inside", "outside", "axial", "radial", "circumferential" and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0033] In the related art, in order to ensure that there is sufficient insulation distance to improve the safety of the DC brushless motor, the step of the insulation skeleton is usually increased. For example, the step height of the existing insulation skeleton usually needs to be set to more than 2.5 mm. In this way, although the insulation distance of the insulation skeleton is effectively increased, the height of the ineffective coil of the motor is also increased, resulting in an increase in the resistance of the motor and an increase in the loss, which leads to a decrease in the performance of the motor. In addition, the existing fixing method of the slot insulation paper is unstable and prone to displacement during the winding process, thereby reducing the insulation of the stator assembly, thereby reducing the safety of the motor.

[0034] See also Figures 1 to 8The present embodiment provides a stator assembly, including a stator core 10, an insulating frame 20, and slot insulating paper 30. The stator core 10 includes an annular stator yoke 11, and the stator yoke 11 extends a plurality of stator teeth 12 at intervals toward the center thereof, and a stator slot 14 is formed between two adjacent stator teeth 12; the insulating frame 20 includes an insulating bone ring 21 adapted to the stator yoke 11, and the insulating bone ring 21 extends a plurality of insulating steps 22 adapted to the stator teeth 12 at intervals toward the center thereof, and two adjacent insulating steps 22 are formed between the two adjacent insulating steps 22. A through groove 25 is formed between the steps 22; insulating edges 221 extend in the same direction on both sides of the insulating step 22, the insulating step 22 abuts on the end face of the stator tooth 12, and the insulating edges 221 on both sides of the insulating step 22 are respectively arranged on both sides of the stator tooth 12; the two end faces of the stator core 10 along its axial direction are symmetrically connected with the insulating skeleton 20, the stator slot 14 and the through grooves 25 at its two axial ends together form a winding groove 40, and the slot insulation paper 30 is arranged against the inner wall of the winding groove 40.

[0035] Therefore, the embodiment of the utility model provides insulating edges 221 on both sides of the insulating step 22, so that when the insulating step 22 abuts against the end surface of the stator tooth 12, the insulating edges 221 on both sides of the insulating step 22 are respectively provided on both sides of the stator tooth 12, so that the insulating step 22 has a better insulation effect on the stator tooth 12, and thus the height of the insulating step 22 can be reduced. That is to say, under the condition of meeting the insulation performance of the stator assembly, the height of the insulating step 22 of the embodiment of the utility model can be relatively designed to be smaller, thereby reducing the height of the ineffective coil and effectively reducing the performance loss of the motor.

[0036] Furthermore, the thickness of the insulating step 22 of the embodiment of the utility model is 1.5 mm. That is to say, compared with the prior art, the insulating step 22 of the embodiment of the utility model can effectively reduce the height by more than 1 mm while ensuring the insulation performance of the stator assembly, thereby effectively reducing the height of the ineffective coil and ensuring the performance of the motor.

[0037] It can be understood that the two end faces of the stator core 10 of the embodiment of the utility model are symmetrically connected with the insulating frame 20, and the insulating steps 22 on each insulating frame 20 are respectively connected to the stator teeth 12 on the stator core 10 in a one-to-one correspondence. In addition, the multiple stator teeth 12 on the stator core 10 are evenly distributed along the circumferential direction, so that the spacing between two adjacent stator teeth 12 is the same, which is convenient for subsequent winding operations.

[0038] Optionally, in some embodiments of the present invention, grooves matching the insulating edging 221 on both sides of the insulating step 22 are respectively provided on both sides of the stator tooth 12, and the insulating edging 221 on both sides of the insulating step 22 are respectively matched and arranged in the grooves on both sides of the stator tooth 12. Therefore, in the embodiments of the present invention, the insulating edging 221 of the insulating step 22 can better match the stator tooth 12 by providing grooves on both sides of the stator tooth 12.

[0039] Among them, since grooves are arranged on both sides of the two ends of the stator teeth 12, the grooves at the same end of two adjacent stator teeth 12 are arranged at intervals. In this way, the part of the stator yoke 11 between the grooves at the same end of two adjacent stator teeth 12 extends out of the stator teeth 12 in the axial direction, and the slot insulation paper 30 also protrudes partially in the axial direction close to this part to completely cover the above-mentioned part of the stator yoke 11.

[0040] Optionally, in some embodiments of the present invention, the stator end portions 13 are extended from the side of the stator tooth 12 away from the stator yoke 11 toward the stator slots 14 on both sides of the stator tooth 12, and two adjacent stator end portions 13 are spaced apart to form notches of the stator slots 14. Correspondingly, in these embodiments, the inner guard teeth 23 are extended from the side of the insulating step 22 away from the insulating bone ring 21 toward the through slots 25 on both sides of the insulating step 22, and two adjacent inner guard teeth 23 are spaced apart, and the two adjacent inner guard teeth 23 are respectively against the stator end portions 13 below them.

[0041] Further, the inner guard teeth 23 extend out of the slot portion 24 in the radial outward direction of the insulating bone ring 21, and flanges 31 are respectively provided on both sides of the slot insulating paper 30, and the side walls of the two flanges 31 are respectively abutted against the side walls of the adjacent stator end portions 13, and the two ends of the two flanges 31 are respectively inserted into the slot portions 24 of the adjacent inner guard teeth 23. Therefore, the embodiment of the utility model provides a slot portion 24 on the inner guard teeth 23 to achieve the function of limiting and fixing the flanges 31 of the slot insulating paper 30, so that one end of the two flanges 31 of the slot insulating paper 30 is respectively inserted into the slot portion 24 of the adjacent inner guard teeth 23, and the other end of the two flanges 31 of the slot insulating paper 30 is also the same; that is, the embodiment of the utility model limits and fixes the slot insulating paper 30 through two insulating skeletons 20, which can effectively prevent the slot insulating paper 30 from displacement.

[0042] Among them, when installing the insulating paper, first, an insulating frame 20 can be installed on one of the end faces of the stator core 10, and then the slot insulating paper 30 is extended from the stator slot 14 at one end of the stator core 10 where the insulating frame 20 is not provided, until one end of the two flanges 31 of the slot insulating paper 30 respectively abuts against the slot portion 24 of the insulating frame 20 to abut and fix one end of the slot insulating paper 30, repeat the above operation and make each stator slot 14 be provided with a slot insulating paper 30, and finally install another insulating frame 20 on the other end face of the stator core 10, and make the slot portion 24 on the insulating frame 20 correspond to the flange 31 of the slot insulating paper 30 below each, so that the two ends of each slot insulating paper 30 are fixed under the limiting action of the two insulating frames 20. After completing the above operation, it can be sent to the next process for the winding operation of the copper wire.

[0043] Optionally, in some embodiments of the present invention, at least two fixing grooves 15 are arranged at intervals on the end surface of the stator yoke 11, and a fixing column 26 plugged into the fixing groove 15 is arranged on the end surface of the insulating bone ring 21 abutting against the stator yoke 11. Therefore, the stator yoke 11 and the insulating bone ring 21 of the embodiment of the present invention are connected by plugging, so that the connection between the two is simple and fast. In addition, a positioning groove 16 is arranged on the end surface of the stator tooth 12, and a positioning column plugged into the positioning groove 16 is arranged on the end surface of the insulating step 22 abutting against the stator tooth 12.

[0044] The second aspect of the embodiment of the utility model provides a motor, the motor includes the stator assembly in any of the above technical solutions and also includes a rotor assembly, the rotor assembly is coaxially arranged with the stator assembly, and the rotor assembly and the stator assembly form an air gap fit. In this technical solution, a motor provided with a stator assembly in any of the above technical solutions is defined, therefore, the motor has the advantages of the stator assembly in any of the above technical solutions, and can achieve the technical effects that can be achieved by the stator assembly in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0045] The third aspect of the embodiment of the utility model provides a compressor, the compressor includes the motor in any of the above technical solutions, therefore, the compressor has the advantages of the motor in any of the above technical solutions, and can achieve the technical effects that can be achieved by the motor in any of the above technical solutions. To avoid repetition, it will not be repeated here. In order to better understand and implement, the utility model is described in detail below with reference to the accompanying drawings.

[0046] The above-mentioned embodiments only express several implementation methods of the utility model, and the description is relatively specific and detailed, but it cannot be understood as limiting the scope of the stator assembly, motor and compressor of the utility model. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model.

Claims

1. A stator assembly, characterized in that: include: A stator core, the stator core comprising an annular stator yoke, a plurality of stator teeth extending from the stator yoke toward the center thereof, and a stator slot is formed between two adjacent stator teeth; An insulating skeleton, the insulating skeleton comprising an insulating bone ring adapted to the stator yoke, the insulating bone ring extending toward the center thereof with a plurality of insulating steps adapted to the stator teeth at intervals, and a through groove formed between two adjacent insulating steps; insulating edges extending in the same direction from both sides of the insulating step, the insulating step abutting against the end face of the stator tooth, and the insulating edges on both sides of the insulating step are respectively arranged on both sides of the stator tooth; Slot insulation paper, the two end faces of the stator core along its axial direction are symmetrically connected to the insulation frame respectively, the stator slot and the through slots at its two axial ends together form a winding slot, and the slot insulation paper is arranged close to the inner wall of the winding slot.

2. The stator assembly according to claim 1, characterized in that: Grooves matching the insulating edgings on both sides of the insulating step are respectively arranged on both sides of the stator tooth, and the insulating edgings on both sides of the insulating step are respectively arranged in the grooves on both sides of the stator tooth.

3. The stator assembly according to claim 1, characterized in that: The stator end portions of the stator teeth, which are away from the stator yoke, extend toward the stator slots on both sides of the stator teeth, respectively. Two adjacent stator end portions are spaced apart to form notches of the stator slots.

4. The stator assembly according to claim 3, characterized in that: The insulating step has inner guard teeth extending from one side away from the insulating bone ring toward the through slots on both sides of the insulating step, two adjacent inner guard teeth are arranged at intervals, and the two adjacent inner guard teeth respectively abut against the stator ends below them.

5. The stator assembly according to claim 4, characterized in that: The inner guard teeth extend out of the slot portion in the radial outward direction of the insulating bone ring, and flanges are respectively provided on both sides of the slot insulating paper, and the side walls of the two flanges are respectively abutted against the side walls of the respective adjacent stator ends, and the two ends of the two flanges are respectively inserted into the slot portions of the respective adjacent inner guard teeth.

6. The stator assembly according to claim 1, characterized in that: The thickness of the insulating step is 1.5 mm.

7. The stator assembly according to claim 1, characterized in that: At least two fixing grooves are arranged at intervals on the end surface of the stator yoke, and fixing columns plugged into the fixing grooves are arranged on the end surface of the insulating bone ring abutting against the stator yoke.

8. The stator assembly according to claim 7, characterized in that: A positioning groove is arranged on the end surface of the stator tooth, and a positioning column plugged into the positioning groove is arranged on the end surface of the insulating step abutting against the stator tooth.

9. A motor, characterized in that: It comprises the stator assembly according to any one of claims 1 to 8, and further comprises a rotor assembly, wherein the rotor assembly is coaxially arranged with the stator assembly, and the rotor assembly and the stator assembly form an air gap fit.

10. A compressor, characterized in that: Comprising the motor as claimed in claim 9.

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