Stator assembly with oil baffle cover and interphase insulation paper, motor and compressor
By setting interphase insulating paper and oil barrier in the stator assembly, using the cooperation of inverted hook and folding edges and hook grooves, the safety problem caused by too small gap between the copper wire group in the prior art is solved, and higher insulation is achieved Sex and reliability.
Patent Information
- Application Number
- CN202420712320.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-04-08
- Publication Date
- 2024-12-24
- Estimated Expiration
- 2034-04-08
AI Technical Summary
When existing DC brushless motors increase the winding rate of copper wire groups, the gap between adjacent copper wire groups is too small, which is prone to failure, reducing the safety of the motor.
The interphase insulating paper and an oil barrier are provided in the stator assembly. By cooperating the inverted hook and folding edges and the hook grooves, the interphase insulating paper is fixed between the stator windings to ensure insulation and prevent falling off.
It effectively improves the insulation and safety of the stator assembly, prevents the phase insulation paper from falling off, and improves the reliability and safety of the motor.
Smart Images
Figure CN222234533U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of compressors, in particular to a stator assembly with an oil shield and 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 having an oil shield and 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 the embodiment of the utility model provides a stator assembly with an oil shield and interphase insulating paper, the stator assembly includes a stator core and a stator winding, both end surfaces of the stator core are respectively provided with insulating skeletons, two insulating skeletons and the stator core together form a plurality of winding parts, a winding slot with slot insulating paper is formed between two adjacent winding parts, and the stator winding is wound on the winding part;
[0008] The interphase insulating paper is arranged in the winding groove, and the interphase insulating paper edge is located between two adjacent stator windings; one end of the interphase insulating paper is provided with a reverse hook folded edge, the oil shield is arranged on one of the insulating frames, and the oil shield is provided with a hook groove portion adapted to the reverse hook folded edge, and the reverse hook folded edge is hooked in the hook groove portion.
[0009] Therefore, the embodiment of the utility model sets interphase insulation paper between two adjacent stator windings, and the interphase insulation paper can play a good insulating role for the two adjacent stator windings, thereby effectively ensuring the safety and reliability of the stator assembly. On the other hand, the embodiment of the utility model sets an oil shield on one of the insulation frames, and opens a hook groove on the oil shield, so that the interphase insulation paper can be fixed in the hook groove by its inverted hook fold, so that the interphase insulation paper does not need to be fixed by the insulation frame, which can not only improve the slot fill rate of the stator winding, but also effectively prevent the undesirable phenomenon of the interphase insulation paper falling off when the stator assembly is running.
[0010] As an embodiment, a notch is provided on one side of the winding slot close to the center of the stator core, the slot insulating paper includes an insulating paper body corresponding to the inner side wall of the winding slot, and two insulating paper flanges are respectively extended from both sides of the insulating paper body in the radial outward direction of the notch; the interphase insulating paper includes a U-shaped interphase paper body, and the side of the interphase paper body away from its opening rests on the two insulating paper flanges, and interphase paper flanges are respectively extended outward on both sides of the opening of the interphase paper body, and the two interphase paper flanges respectively rest on the side walls of the insulating paper body opposite to the notch. Therefore, the embodiment of the utility model inserts the side of the interphase paper body away from its opening between the two insulating paper flanges, and utilizes the elasticity of the interphase paper body itself to enable the interphase paper body to lean against the notch, while the side of the interphase paper body away from the notch is respectively leaned against the side walls of the insulating paper body opposite to the notch through the two interphase paper flanges, thereby enabling the interphase paper body to be fixed in the radial direction of the stator core, and combined with the cooperation and fixation between the inverted hook folded edge at one end of the interphase paper body and the hook groove portion of the oil shield, the interphase paper body can be fixed in the axial direction of the stator core, thereby achieving the interphase insulating paper firmly fixed between two adjacent stator windings, and it is not easy to fall off even during the operation of the stator assembly.
[0011] As an implementation mode, the two sides of one end of the interphase paper body respectively extend the inverted hook folds outward, and the opening direction of the two inverted hook folds is parallel to the axial direction of the interphase paper body; the hook groove portion includes two oppositely arranged inverted hook grooves, the two inverted hook grooves are relatively spaced, and the opposite sides of the two inverted hook grooves are respectively provided with notches for the inverted hook folds to be inserted; the two inverted hook folds are respectively hooked in the two inverted hook grooves. Therefore, the embodiment of the utility model makes the connection between the interphase insulating paper and the oil shield more secure through the design of two inverted hook folds extending outward, and the two are not easy to separate.
[0012] As an embodiment, the width of the interphase paper body along the circumference of the stator core is greater than the width of the slot along the circumference of the stator core, and one end of the interphase paper body away from the undercut fold extends out of the stator core along the axial direction of the stator core.
[0013] As an implementation manner, the interphase paper body and the two interphase paper flanges are in a “J” shape in the radial cross section of the stator core.
[0014] As an embodiment, the oil baffle cover includes an annular cover body, and the cover body extends toward the center thereof to have a number of groove portions that is the same as the number of the winding portions, and a plurality of the groove portions are arranged along the circumference of the cover body, and each groove portion corresponds to the radial middle portion of a winding slot along the axial projection of the stator core.
[0015] As an embodiment, the insulating skeleton includes an annular insulating bone ring, and a plurality of tooth guards extend toward the center of the insulating bone ring. A guard end portion is provided on the side of the tooth guard away from the insulating bone ring; the cover body is arranged at one end of the insulating skeleton away from the stator core.
[0016] 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. A stator end is provided on the side of the stator tooth away from the stator yoke. The insulating bone rings of the two insulating skeletons are respectively arranged on the two end surfaces of the stator yoke, the tooth guards of the two insulating skeletons are respectively arranged on the two end surfaces of the stator teeth, and the tooth guards of the two insulating skeletons are respectively arranged on the two end surfaces of the stator ends; the stator teeth and the tooth guards at both ends thereof jointly form the winding portion.
[0017] 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.
[0018] 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.
[0019] 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
[0020] Figure 1 This is one of the structural schematic diagrams of the stator assembly of an embodiment of the utility model;
[0021] Figure 2 This is the second structural schematic diagram of the stator assembly of the embodiment of the utility model;
[0022] Figure 3 for Figure 2 An enlarged schematic diagram of section A is shown;
[0023] Figure 4 for Figure 2 An enlarged schematic diagram of portion B is shown;
[0024] Figure 5 This is the third structural schematic diagram of the stator assembly of the embodiment of the utility model;
[0025] Figure 6 for Figure 5 An enlarged schematic diagram of section C is shown;
[0026] Figure 7 This is a schematic diagram of the structure of the interphase insulation paper of an embodiment of the utility model;
[0027] Figure 8 This is a schematic structural diagram of an oil shield according to an embodiment of the utility model;
[0028] Fig. 9 This is a schematic diagram of the connection between the interphase insulation paper and the oil shield in an embodiment of the utility model;
[0029] Fig.10 for Fig. 9 An enlarged schematic diagram of section D is shown.
[0030] Description of reference numerals:
[0031] 10. stator core; 20. insulation frame; 30. winding part; 40. winding slot; 41. slot insulation paper; 42. insulation paper flange; 50. interphase insulation paper; 51. inverted hook fold; 52. interphase paper body; 53. interphase paper flange; 60. oil shield; 61. cover body; 62. hook slot part; 63. inverted hook slot; 100. stator assembly. DETAILED DESCRIPTION
[0032] 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.
[0033] Traditional DC brushless 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 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 DC brushless 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.
[0034] To this end, an embodiment of the utility model provides a stator assembly 100 having an oil shield 60 and interphase insulation paper 50. By arranging the interphase insulation paper 50 between two adjacent stator windings, the insulation between the two adjacent stator windings can be effectively ensured, thereby effectively improving the safety and reliability of the stator assembly 100.
[0035] See also Figures 1 to 10 The present embodiment provides a stator assembly 100 having an oil shield 60 and an interphase insulating paper 50, wherein the stator assembly 100 comprises a stator core 10 and a stator winding, wherein both end surfaces of the stator core 10 are respectively provided with insulating frames 20, wherein the two insulating frames 20 and the stator core 10 together form a plurality of winding portions 30, wherein a winding slot 40 having a slot insulating paper 41 is formed between two adjacent winding portions 30, and the stator winding is wound on the winding portion 30; the interphase insulating paper 50 is arranged in the winding slot 40, and the interphase insulating paper 50 is located between two adjacent stator windings; a reverse hook fold 51 is arranged at one end of the interphase insulating paper 50, and the oil shield 60 is arranged on one of the insulating frames 20, and a hook groove portion 62 matched with the reverse hook fold 51 is provided on the oil shield 60, and the reverse hook fold 51 is cooperatively hooked in the hook groove portion 62.
[0036] Therefore, the embodiment of the utility model sets the interphase insulation paper 50 between two adjacent stator windings, and the interphase insulation paper 50 can play a good insulation role for the two adjacent stator windings, thereby effectively ensuring the safety and reliability of the stator assembly 100. On the other hand, the embodiment of the utility model sets the oil shield 60 on one of the insulation frames 20, and opens a hook groove 62 on the oil shield 60, so that the interphase insulation paper 50 can be fixed in the hook groove 62 through its inverted hook fold 51, so that the interphase insulation paper 50 does not need to be fixed by the insulation frame 20, which can not only improve the slot fill rate of the stator winding, but also effectively prevent the interphase insulation paper 50 from falling off when the stator assembly 100 is in operation.
[0037] Optionally, in some embodiments of the present application, a notch is provided on one side of the winding slot 40 close to the center of the stator core 10, and the slot insulating paper 41 includes an insulating paper body corresponding to the inner side wall of the winding slot 40, and two insulating paper flanges 42 are respectively extended from both sides of the insulating paper body in the radial outward direction of the notch; the interphase insulating paper 50 includes a U-shaped interphase paper body 52, and the side of the interphase paper body 52 away from its opening rests on the two insulating paper flanges 42, and interphase paper flanges 53 are respectively extended outward on both sides of the opening of the interphase paper body 52, and the two interphase paper flanges 53 respectively rest on the side walls of the insulating paper body opposite to the notch.
[0038] Therefore, the embodiment of the utility model inserts the side of the interphase paper body 52 away from its opening between the two insulating paper flanges 42, and utilizes the elasticity of the interphase paper body 52 itself to enable the interphase paper body 52 to lean against the notch, and the side of the interphase paper body 52 away from the notch is respectively leaned against the side walls of the insulating paper body opposite to the notch through the two interphase paper flanges 53, thereby enabling the interphase paper body 52 to be fixed in the radial direction of the stator core 10, and combined with the cooperation and fixation between the inverted hook fold 51 at one end of the interphase paper body 52 and the hook groove portion 62 of the oil shield 60, the interphase paper body 52 can be fixed in the axial direction of the stator core 10, so that the interphase insulating paper 50 is firmly fixed between two adjacent stator windings, and it is not easy to fall off even during the operation of the stator assembly 100.
[0039] In order to make the connection between the interphase insulating paper 50 and the oil shield 60 more stable and less likely to be separated, in some embodiments of the present application, the two sides of one end of the interphase paper body 52 respectively extend the inverted hook folding edges 51 outward, and the opening direction of the two inverted hook folding edges 51 is parallel to the axial direction of the interphase paper body 52; the hook groove portion 62 includes two oppositely arranged inverted hook grooves 63, the two inverted hook grooves 63 are relatively spaced, and the opposite sides of the two inverted hook grooves 63 are respectively provided with notches for the inverted hook folding edges 51 to be inserted; the two inverted hook folding edges 51 are respectively hooked in the two inverted hook grooves 63. Therefore, the embodiment of the utility model makes the connection between the interphase insulating paper 50 and the oil shield 60 more stable and less likely to be separated by the design of two inverted hook folding edges 51 extending outward.
[0040] Optionally, in some embodiments of the present application, the width of the interphase paper body 52 along the circumference of the stator core 10 is greater than the width of the slot along the circumference of the stator core 10, and one end of the interphase paper body 52 away from the undercut fold 51 extends out of the stator core 10 along the axial direction of the stator core 10. The interphase paper body 52 and the two interphase paper flanges 53 form a "J" shape in the radial section of the stator core 10.
[0041] Optionally, in some embodiments of the present application, the oil deflector 60 includes an annular cover body 61, and the cover body 61 extends toward its center to have the same number of groove portions 62 as the winding portions, and a plurality of the groove portions 62 are arranged along the circumference of the cover body 61, and each groove portion 62 corresponds to the radial middle portion of a winding slot 40 along the axial projection of the stator core 10.
[0042] Further, the insulating skeleton 20 includes an annular insulating bone ring, and a plurality of tooth guards extend toward the center of the insulating bone ring, and a guard end portion is provided on the side of the tooth guard portion away from the insulating bone ring; the cover body 61 is arranged at one end of the insulating skeleton 20 away from the stator core 10. In addition, the stator core 10 includes an annular stator yoke, and a plurality of stator teeth extend toward the center of the stator yoke, and a stator end is provided on the side of the stator tooth away from the stator yoke, the insulating bone rings of the two insulating skeletons 20 are respectively arranged on the two end surfaces of the stator yoke, the tooth guards of the two insulating skeletons 20 are respectively arranged on the two end surfaces of the stator teeth, and the guard end portions of the two insulating skeletons 20 are respectively arranged on the two end surfaces of the stator ends; the stator teeth and the tooth guards at both ends thereof jointly form the winding portion 30.
[0043] Among them, the connection method between the cover body 61 and the insulating bone ring can adopt the common connection methods in the field such as snap connection and screw fixing. The oil shield 60 is installed on one of the insulating skeletons 20, and the hook groove part 62 on the oil shield 60 corresponds to the middle part of each winding groove 40 one by one, so as to facilitate the subsequent matching installation of the interphase insulating paper 50. Then, one end of the interphase insulating paper 50 with the inverted hook fold 51 is inserted into the middle part of the winding groove 40, until the two inverted hook folds 51 of the interphase insulating paper 50 are inserted into the two inverted hook grooves 63 of the hook groove part 62 and fixed in the two inverted hook grooves 63 by their own elastic hook setting, and at the same time, the interphase paper body 52 is adjusted so that the two sides of the interphase paper body 52 are respectively against the two insulating paper flanges 42 fixed on the slot insulating paper 41 and the side wall of the slot insulating paper 41 away from the notch, thereby installing and fixing the interphase insulating paper 50 in the oil shield 60 and the winding groove 40, and playing an insulating role in isolating the two adjacent stator windings.
[0044] 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.
[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.
[0046] 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.
[0047] 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 with oil shield and interphase insulation paper 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 having an oil shield and interphase insulating paper, characterized in that: The stator assembly comprises a stator core and a stator winding, wherein both end surfaces of the stator core are respectively provided with insulating frames, and the two insulating frames and the stator core together form a plurality of winding parts, 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 insulating paper is arranged in the winding groove, and the interphase insulating paper edge is located between two adjacent stator windings; one end of the interphase insulating paper is provided with a reverse hook folded edge, the oil shield is arranged on one of the insulating frames, and the oil shield is provided with a hook groove portion adapted to the reverse hook folded edge, and the reverse hook folded edge is hooked in the hook groove portion.
2. The stator assembly with oil shield and interphase insulation paper according to claim 1, characterized in that: A notch is provided on one side of the winding slot close to the center of the stator core, the slot insulating paper comprises an insulating paper body corresponding to the inner side wall of the winding slot, and two insulating paper flanges are respectively extended from both sides of the insulating paper body in the radial outward direction of the notch; the interphase insulating paper comprises a U-shaped interphase paper body, and the side of the interphase paper body away from its opening abuts on the two insulating paper flanges, and interphase paper flanges are respectively extended outward on both sides of the opening of the interphase paper body, and the two interphase paper flanges are respectively abutted on the side walls of the insulating paper body opposite to the notch.
3. The stator assembly with oil shield and interphase insulation paper according to claim 2, characterized in that: The two sides of one end of the interphase paper body respectively extend outward with the inverted hook folded edges, and the opening directions of the two inverted hook folded edges are parallel to the axial direction of the interphase paper body; the hook groove portion includes two oppositely arranged inverted hook grooves, the two inverted hook grooves are relatively spaced apart, and the opposite sides of the two inverted hook grooves are respectively provided with notches for the inverted hook folded edges to be inserted; the two inverted hook folded edges are respectively hooked in the two inverted hook grooves.
4. The stator assembly with oil shield and interphase insulation paper according to claim 2, characterized in that: The width of the interphase paper body along the circumference of the stator core is greater than the width of the slot along the circumference of the stator core, and one end of the interphase paper body away from the undercut fold extends out of the stator core along the axial direction of the stator core.
5. The stator assembly with oil shield and interphase insulation paper according to claim 4, characterized in that: The interphase paper body and the two interphase paper flanges are in a "J" shape in the radial cross section of the stator core.
6. The stator assembly with oil shield and interphase insulation paper according to claim 3, characterized in that: The oil shielding cover comprises an annular cover body, and the cover body extends toward the center thereof to have the same number of hook grooves as the winding parts, and a plurality of the hook grooves are arranged along the circumference of the cover body, and each hook groove portion corresponds to the radial middle part of a winding slot along the axial projection of the stator core.
7. The stator assembly with oil shield and interphase insulation paper according to claim 6, characterized in that: The insulating skeleton comprises an annular insulating bone ring, a plurality of tooth guards extend toward the center of the insulating bone ring, and a guard end portion is provided on a side of the tooth guard away from the insulating bone ring; the cover body is arranged at one end of the insulating skeleton away from the stator core.
8. The stator assembly with oil shield and interphase insulation paper according to claim 7, 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. A stator end is provided on the side of the stator tooth away from the stator yoke. The insulating bone rings of the two insulating skeletons are respectively arranged on the two end surfaces of the stator yoke, the tooth guards of the two insulating skeletons are respectively arranged on the two end surfaces of the stator teeth, and the guard ends of the two insulating skeletons are respectively arranged on the two end surfaces of the stator ends; the stator teeth and the tooth guards at both ends thereof jointly form the winding portion.
9. A motor, characterized in that: It comprises a stator assembly with an oil shield and interphase insulation paper as described 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.