Stator assembly with interphase insulation paper, motor and compressor

Abstract

The utility model relates to a stator assembly with interphase insulation paper, a motor and a compressor, the stator assembly comprises a stator iron core and a stator winding, the stator iron core is respectively provided with an upper skeleton and a lower skeleton along two axial end surfaces, the upper skeleton, the stator iron core and the lower skeleton extend towards the center of the stator iron core to form a plurality of winding parts, and the winding parts are wound around the stator iron core. A winding slot with slot insulation paper is formed between two adjacent winding parts, and the stator winding is wound on the winding parts; the inter-phase insulation paper is arranged between every two adjacent stator windings, and the inter-phase insulation paper is located between the upper framework and the lower framework. According to the stator assembly provided by the utility model, two adjacent stator windings can be well insulated through the interphase insulation paper, so that the safety and the reliability of a motor are effectively ensured.

Description

Technical Field

[0001] The utility model relates to the technical field of compressors, in particular to a stator assembly with interphase insulating paper, 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 ring-shaped stator yoke centered on the rotating shaft, and a plurality of stator teeth extending from the ring-shaped stator yoke to the rotor, two adjacent stator teeth are spaced to form a slot for copper wire winding, and insulating paper is provided in the slot. The axial ends of the stator are respectively covered with insulating frames, so that each stator tooth and the part of the insulating frame corresponding to the stator tooth are wound with a copper wire group. In order to improve the performance of the motor, the existing brushless DC motor usually designs the maximum winding rate of the copper wire group, but this also leads to the gap between two adjacent copper wire groups being too small, which is easy to fail during use, making the safety of the motor unable to be guaranteed, 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 with interphase insulation paper.

[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, the first aspect of an embodiment of the utility model provides a stator assembly with phase-to-phase insulating paper, the stator assembly comprising a stator core and a stator winding, the stator core having an upper frame and a lower frame respectively arranged at both end surfaces along its axial direction, the upper frame, the stator core and the lower frame jointly extending a plurality of winding portions toward the center of the stator core, a winding slot with slot insulating paper is formed between two adjacent winding portions, the stator winding is wound on the winding portion; the phase-to-phase insulating paper is arranged between two adjacent stator windings, and the phase-to-phase insulating paper is located between the upper frame and the lower frame.

[0008] Therefore, the embodiment of the utility model provides interphase insulation paper between two adjacent stator windings, and the interphase insulation paper can play a good insulation role for the two adjacent stator windings, thereby effectively ensuring the safety of the motor. On the other hand, the embodiment of the utility model can fix the interphase insulation paper through the upper frame and the lower frame, thereby preventing the interphase insulation paper from falling off when the stator assembly is running.

[0009] As an implementation mode, the interphase insulating paper includes a U-shaped interphase paper body, and both sides of the interphase paper body are respectively extended outwardly with interphase paper flanges, the upper end of the interphase paper flange forms a gap fit with the upper frame, and the lower end of the interphase paper flange rests on the lower frame. Therefore, the embodiment of the utility model makes the cross-section of the interphase insulating paper present a "J" shape through the U-shaped interphase paper body and the two interphase paper flanges extending outward. In this way, the interphase insulating paper has a tension that opens toward both sides, which can better insulate the two adjacent stator windings, and at the same time cooperate with the limiting and fixing functions of the upper frame and the lower frame to prevent the interphase insulating paper from falling off when the stator assembly is running.

[0010] As an embodiment, the upper skeleton includes an annular upper insulating bone ring, and the upper insulating bone ring extends an upper insulating step toward its center, and the upper insulating step extends an insulating paper limit block toward the two adjacent winding grooves on one side away from the upper insulating bone ring, and the upper end of the interphase paper flange forms a gap fit with the bottom of the insulating paper limit block. Therefore, the embodiment of the utility model forms a gap fit between the upper end of the interphase paper flange and the bottom of the insulating paper limit block, which can facilitate the installation and fit of the interphase insulating paper with the upper skeleton and the lower skeleton, and can also limit the interphase insulating paper through the upper skeleton and the lower skeleton to prevent the interphase insulating paper from falling off.

[0011] As an embodiment, the side of the insulating paper stop block away from the upper insulating bone ring and the upper insulating step together form an insertion guide groove for the interphase paper flange to pass through. Therefore, the embodiment of the utility model enables the lower end of the interphase paper flange to be inserted into the winding groove along the insertion guide groove through the guiding effect of the insertion guide groove, which facilitates the installation of the interphase paper flange.

[0012] As an embodiment, the lower skeleton includes an annular lower insulating bone ring, the lower insulating bone ring extends a lower insulating step toward its center, the lower insulating step extends an insulating paper fixing block toward the two adjacent winding grooves on one side away from the lower insulating bone ring, and the lower end of the interphase paper flange abuts against the insulating paper fixing block. Therefore, the embodiment of the utility model can support and fix the lower end of the interphase paper flange through the insulating paper fixing block, and utilize the limiting effect of the insulating paper limiting block so that the upper and lower ends of the interphase paper flange are respectively arranged between the insulating paper fixing block and the insulating paper limiting block.

[0013] As an embodiment, the stator core includes an annular stator yoke, and a plurality of stator teeth extend toward the center of the stator yoke; the upper insulating bone ring and the lower insulating bone ring are respectively arranged on the upper and lower end surfaces of the stator yoke, and the upper insulating step and the lower insulating step are respectively arranged on the upper and lower end surfaces of the stator teeth.

[0014] As an implementation mode, the stator teeth extend the stator ends toward the two adjacent winding slots on the side away from the stator yoke, the side walls of the interphase paper flanges abut against the side walls of the stator ends, and the side walls of the interphase paper body away from the interphase paper flanges abut against the inner side walls of the stator yoke. Therefore, the embodiment of the utility model abuts the side walls of the interphase paper flanges against the side walls of the stator ends, and cooperates with the limiting and fixing effects of the insulating paper fixing block and the insulating paper limiting block, so that the interphase insulating paper can be more firmly set in the winding slots.

[0015] As an implementation mode, an upper chamfer is provided on the outer side of the upper end of the interphase paper flange, and a lower chamfer is provided on the outer side of the lower end of the interphase paper flange. Therefore, the embodiment of the utility model can facilitate the insertion and installation of the interphase paper flange and prevent the interphase paper flange from scratching the stator winding by respectively providing an upper chamfer and a lower chamfer on the upper and lower ends of the interphase paper flange.

[0016] 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.

[0017] 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.

[0018] In order to better understand and implement the present invention, the present invention is described in detail below with reference to the accompanying drawings. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 This is one of the structural schematic diagrams of the stator assembly of an embodiment of the utility model;

[0020] Figure 2 for Figure 1 An enlarged schematic diagram of section A is shown;

[0021] Figure 3 This is the second structural schematic diagram of the stator assembly of the embodiment of the utility model;

[0022] Figure 4 for Figure 3 An enlarged schematic diagram of portion B is shown;

[0023] Figure 5 This is the third structural schematic diagram of the stator assembly of the embodiment of the utility model;

[0024] Figure 6 for Figure 5 An enlarged schematic diagram of section C is shown;

[0025] Figure 7 This is a schematic structural diagram of a stator core according to an embodiment of the utility model;

[0026] Figure 8 This is a schematic cross-sectional view of the interphase insulation paper of an embodiment of the utility model;

[0027] Fig. 9 The figure is a schematic diagram of the structure of the interphase insulating paper according to an embodiment of the utility model.

[0028] Description of reference numerals:

[0029] 10. stator core; 11. stator yoke; 12. stator teeth; 13. stator end; 20. stator winding; 30. upper frame; 31. upper insulating bone ring; 32. upper insulating step; 33. insulating paper limit block; 34. insertion guide groove; 40. lower frame; 41. lower insulating bone ring; 42. lower insulating step; 43. insulating paper fixing block; 50. winding groove; 51. slot insulating paper; 60. interphase insulating paper; 61. interphase paper body; 62. interphase paper flange; 63. upper chamfer; 64. lower chamfer; 100. stator assembly. DETAILED DESCRIPTION

[0030] 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.

[0031] 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.

[0032] Traditional brushless DC motors are generally composed of stators, rotors, end caps and other components, wherein the rotor rotates around the rotating shaft, the stator and the rotor form a gap fit, the stator has a ring-shaped stator yoke centered on the rotating shaft, and multiple stator teeth extend from the ring-shaped stator yoke to the rotor. Two adjacent stator teeth are spaced to form a slot for copper wire winding, and insulating paper is provided in the slot. The axial ends of the stator are respectively covered with insulating skeletons, so that each stator tooth and the part of the insulating skeleton corresponding to the stator tooth are wound with a copper wire group. In order to improve the performance of the motor, traditional brushless DC motors usually design the maximum winding rate of the copper wire group, but this also leads to too small a gap between two adjacent copper wire groups, which is prone to short circuits and other faults during use, making the safety of the motor impossible to guarantee and reducing the safety of the motor.

[0033] In view of this, an embodiment of the utility model provides a stator assembly 100 having an interphase insulating paper 60. By arranging the interphase insulating paper 60 between two adjacent stator windings 20, the undesirable contact phenomenon between the two stator windings 20 can be effectively prevented, thereby effectively improving the safety and reliability of the stator assembly 100.

[0034] See also Figures 1 to 9 ; This embodiment provides a stator assembly 100 with an interphase insulating paper 60, the stator assembly 100 includes a stator core 10 and a stator winding 20, the stator core 10 is provided with an upper frame 30 and a lower frame 40 at both end surfaces along its axial direction, the upper frame 30, the stator core 10, and the lower frame 40 extend a plurality of winding parts toward the center of the stator core 10, a winding slot 50 with a slot insulating paper 51 is formed between two adjacent winding parts, and the stator winding 20 is wound on the winding part; the interphase insulating paper 60 is provided between two adjacent stator windings 20, and the interphase insulating paper 60 is located between the upper frame 30 and the lower frame 40.

[0035] Therefore, the embodiment of the utility model provides an interphase insulating paper 60 between two adjacent stator windings 20, and the interphase insulating paper 60 can play a good insulating role on the two adjacent stator windings 20, effectively ensuring the safety of the motor. On the other hand, the embodiment of the utility model can fix the interphase insulating paper 60 through the upper frame 30 and the lower frame 40 to prevent the interphase insulating paper 60 from falling off when the stator assembly 100 is running.

[0036] Optionally, in some embodiments of the utility model, the interphase insulating paper 60 includes a U-shaped interphase paper body 61, and both sides of the interphase paper body 61 are respectively extended outwardly with interphase paper flanges 62, the upper end of the interphase paper flange 62 forms a clearance fit with the upper frame 30, and the lower end of the interphase paper flange 62 abuts against the lower frame 40. Therefore, the embodiment of the utility model makes the cross section of the interphase insulating paper 60 in a "J" shape through the U-shaped interphase paper body 61 and the two interphase paper flanges 62 extending outward. In this way, the interphase insulating paper 60 has a tension that opens toward both sides, which can better insulate the two adjacent stator windings 20, and at the same time cooperate with the limiting and fixing functions of the upper frame 30 and the lower frame 40 to prevent the interphase insulating paper 60 from falling off when the stator assembly 100 is in operation.

[0037] Optionally, in some embodiments of the utility model, the upper skeleton 30 includes an annular upper insulating bone ring 31, the upper insulating bone ring 31 extends an upper insulating step 32 toward its center, the upper insulating step 32 extends an insulating paper stopper 33 toward two adjacent winding grooves 50 on one side away from the upper insulating bone ring 31, and the upper end of the interphase paper flange 62 forms a clearance fit with the bottom of the insulating paper stopper 33. In addition, the lower skeleton 40 includes an annular lower insulating bone ring 41, the lower insulating bone ring 41 extends a lower insulating step 42 toward its center, the lower insulating step 42 extends an insulating paper fixing block 43 toward two adjacent winding grooves 50 on one side away from the lower insulating bone ring 41, and the lower end of the interphase paper flange 62 abuts against the insulating paper fixing block 43.

[0038] Therefore, in the embodiment of the utility model, the upper end of the interphase paper flange 62 is matched with the bottom of the insulating paper limit block 33 to form a gap. In addition, the lower end of the interphase paper flange 62 can be supported and fixed by the insulating paper fixing block 43, and the limiting effect of the insulating paper limit block 33 is utilized so that the upper and lower ends of the interphase paper flange 62 are respectively arranged between the insulating paper fixing block 43 and the insulating paper limit block 33; it can facilitate the installation and matching of the interphase insulating paper 60 with the upper frame 30 and the lower frame 40, and can also limit the interphase insulating paper 60 through the upper frame 30 and the lower frame 40 to prevent the interphase insulating paper 60 from falling off.

[0039] The size of the gap between the upper end of the interphase paper flange 62 and the bottom of the insulating paper limit block 33 may be one of 1 mm, 1.5 mm, and 2 mm.

[0040] Optionally, in some embodiments of the present invention, the side of the insulating paper stopper 33 away from the upper insulating bone ring 31 and the upper insulating step 32 together form an insertion guide groove 34 for the interphase paper flange 62 to pass through. Thus, the present embodiment of the utility model enables the lower end of the interphase paper flange 62 to be inserted into the winding groove 50 along the insertion guide groove 34 through the guiding effect of the insertion guide groove 34, thereby facilitating the installation of the interphase paper flange 62.

[0041] Optionally, in some embodiments of the utility model, the stator core 10 includes an annular stator yoke 11, and the stator yoke 11 has a plurality of stator teeth 12 extending toward its center; the upper insulating bone ring 31 and the lower insulating bone ring 41 are respectively arranged on the upper and lower end surfaces of the stator yoke 11, and the upper insulating step 32 and the lower insulating step 42 are respectively arranged on the upper and lower end surfaces of the stator tooth 12.

[0042] Furthermore, the stator tooth 12 extends a stator end 13 toward the two adjacent winding slots 50 on one side away from the stator yoke 11, and the side wall of the interphase paper flange 62 abuts against the side wall of the stator end 13, and the side wall of the interphase paper body 61 away from the interphase paper flange 62 abuts against the inner wall of the stator yoke 11.

[0043] Therefore, when the interphase insulating paper 60 is installed between two adjacent stator windings 20, first, the two interphase paper flanges 62 of the interphase insulating paper 60 are respectively aligned with the two adjacent insertion guide grooves 34, and inserted into the winding groove 50 along the side walls of the two adjacent stator ends 13 until the lower ends of the two interphase paper flanges 62 abut against the two adjacent insulating paper fixing blocks 43. At this time, the upper ends of the two interphase paper flanges 62 respectively form a gap fit with the bottom of the insulating paper limit block 33, and the side wall of the interphase paper body 61 abuts against the slot insulating paper 51 abutting against the inner wall of the stator yoke 11. In this way, by utilizing the "J" type structure of the interphase insulating paper 60, two separated insulating spaces are formed between the interphase insulating paper 60 and the slot insulating paper 51, and the parts of the two adjacent stator windings 20 in the winding groove 50 are respectively located in the two insulating spaces.

[0044] That is to say, the embodiment of the utility model can further insulate the two adjacent stator windings 20 by arranging the interphase insulating paper 60 in the winding slot 50; and, by utilizing the structural improvement of the upper frame 30 and the lower frame 40, it can not only facilitate the matching insertion of the interphase insulating paper 60, but also fix the inserted interphase insulating paper 60, thereby effectively ensuring the safety and reliability of the stator assembly 100.

[0045] In order to prevent the interphase insulating paper 60 from scratching the stator winding 20, in some embodiments of the present utility model, an upper chamfer 63 is provided on the outer side of the upper end of the interphase paper flange 62, and a lower chamfer 64 is provided on the outer side of the lower end of the interphase paper flange 62. Therefore, the embodiment of the utility model can facilitate the insertion and installation of the interphase paper flange 62 and prevent the interphase paper flange 62 from scratching the stator winding 20 by respectively providing the upper chamfer 63 and the lower chamfer 64 on the upper and lower ends of the interphase paper flange 62.

[0046] The second aspect of the embodiment of the utility model provides a motor, which includes the stator assembly 100 in any of the above technical solutions, and also includes a rotor assembly, which is coaxially arranged with the stator assembly 100, and the rotor assembly and the stator assembly 100 form an air gap fit. In this technical solution, a motor provided with the stator assembly 100 in any of the above technical solutions is defined, so the motor has the advantages of the stator assembly 100 in any of the above technical solutions, and can achieve the technical effects that can be achieved by the stator assembly 100 in any of the above technical solutions. To avoid repetition, it will not be repeated here.

[0047] 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.

[0048] 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 with interphase insulating paper, characterized in that: The stator assembly comprises a stator core and a stator winding, wherein the stator core is provided with an upper frame and a lower frame at both end surfaces along the axial direction thereof, respectively, and the upper frame, the stator core and the lower frame extend a plurality of winding parts toward the center of the stator core, and a winding slot with slot insulation paper is formed between two adjacent winding parts, and the stator winding is wound on the winding part; The interphase insulation paper is arranged between two adjacent stator windings, and the interphase insulation paper is located between the upper frame and the lower frame.

2. The stator assembly with interphase insulation paper according to claim 1, characterized in that: The interphase insulating paper comprises a U-shaped interphase paper body, and both sides of the interphase paper body are respectively extended outward to be provided with interphase paper flanges, the upper ends of the interphase paper flanges form a gap fit with the upper frame, and the lower ends of the interphase paper flanges abut against the lower frame.

3. The stator assembly with interphase insulation paper according to claim 2, characterized in that: The upper skeleton includes an annular upper insulating bone ring, and the upper insulating bone ring extends an upper insulating step toward its center. The upper insulating step extends an insulating paper limit block toward two adjacent winding grooves on one side away from the upper insulating bone ring, and the upper end of the interphase paper flange forms a gap fit with the bottom of the insulating paper limit block.

4. The stator assembly with interphase insulation paper according to claim 3, characterized in that: The side of the insulating paper limiting block away from the upper insulating bone ring and the upper insulating step together form an insertion guide groove for the interphase paper flange to pass through.

5. The stator assembly with interphase insulation paper according to claim 3, characterized in that: The lower frame includes an annular lower insulating bone ring, and a lower insulating step extends toward the center of the lower insulating bone ring. The lower insulating step extends an insulating paper fixing block toward two adjacent winding grooves on one side away from the lower insulating bone ring, and the lower end of the interphase paper flange rests on the insulating paper fixing block.

6. The stator assembly with interphase insulation paper according to claim 5, characterized in that: The stator core includes an annular stator yoke, and a plurality of stator teeth extend toward the center of the stator yoke; the upper insulating bone ring and the lower insulating bone ring are respectively arranged on the upper and lower end surfaces of the stator yoke, and the upper insulating step and the lower insulating step are respectively arranged on the upper and lower end surfaces of the stator teeth.

7. The stator assembly with interphase insulation paper according to claim 6, characterized in that: The stator teeth extend stator ends toward two adjacent winding slots on one side away from the stator yoke, the side walls of the interphase paper flanges abut against the side walls of the stator ends, and the side walls of the interphase paper body away from the interphase paper flanges abut against the inner side walls of the stator yoke.

8. The stator assembly with interphase insulation paper according to claim 2, characterized in that: An upper chamfer is arranged on the outer side of the upper end of the inter-phase paper turning edge, and a lower chamfer is arranged on the outer side of the lower end of the inter-phase paper turning edge.

9. A motor, characterized in that: It comprises a stator assembly with interphase insulating paper as claimed in any one of claims 1 to 8, and also 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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