CN-224233410-U - Stator punching sheet, stator, permanent magnet motor, compressor and refrigeration equipment

CN224233410UCN 224233410 UCN224233410 UCN 224233410UCN-224233410-U

Abstract

The utility model provides a stator punching sheet, a stator, a permanent magnet motor, a compressor and refrigeration equipment. The stator lamination includes a yoke portion and a plurality of teeth portions. The outer peripheral surface of the yoke comprises a plurality of tooth arc sections, a plurality of groove arc sections and concave parts, wherein the tooth arc sections are arranged between two adjacent tooth arc sections, and the concave parts are arranged between the adjacent tooth arc sections and the groove arc sections and/or between the two adjacent groove arc sections. The number of the stator grooves is Z, Z is an integer multiple of 3, the number of the tooth arc sections is M, the number of the concave parts is P, the number of the groove arc sections is N, the ratio of Z to M is an integer, P+M=Z, and M+N=P. The stator punching sheet can improve electromagnetic noise of a permanent magnet motor and a compressor.

Inventors

ZHANG ZUNMU
FAN SHAOWEN
LIU SIYUAN
GU JIANXIN

Assignees

青岛海尔空调器有限总公司
海尔智家股份有限公司

Dates

Publication Date: 20260512
Application Date: 20250429

Claims (10)

1. A stator lamination, characterized by comprising: Yoke portion, and A plurality of teeth arranged on the inner peripheral surface of the yoke at intervals, wherein stator slots are defined by adjacent teeth and the yoke together, wherein The outer peripheral surface of the yoke comprises a plurality of tooth arc sections arranged at intervals along the circumferential direction, a plurality of groove arc sections arranged between two adjacent tooth arc sections, and a concave part arranged between the adjacent tooth arc sections and the groove arc sections and/or between the two adjacent groove arc sections, and The number of the stator slots is recorded as Z, and Z is an integer multiple of 3; The number of the tooth arc sections is M, the number of the concave parts is P, the number of the groove arc sections is N, the ratio of Z to M is an integer, P+M=Z, and M+N=P.
2. The stator lamination of claim 1, wherein The plurality of tooth arc segments are equally spaced along the circumferential direction on the outer peripheral surface of the yoke portion, and The number of the stator grooves is 9, the number of the tooth arc sections is 3, the number of the concave parts is 6, the number of the groove arc sections is 3, or The number of the stator grooves is 12, the number of the tooth arc sections is 3, the number of the concave parts is 9, the number of the groove arc sections is 6, or The number of the stator grooves is 12, the number of the tooth arc sections is 4, the number of the concave parts is 8, the number of the groove arc sections is 4, or The number of the stator grooves is 15, the number of the tooth arc sections is 3, the number of the concave parts is 12, the number of the groove arc sections is 9, or The number of the stator grooves is 15, the number of the tooth arc sections is 5, the number of the concave parts is 10, and the number of the groove arc sections is 5.
3. The stator lamination of claim 1, wherein The included angle formed by the two ends of each tooth arc section and the center of the stator punching sheet is alpha i , and the included angle formed by the two ends of each groove arc section and the center of the stator punching sheet is beta j , wherein 45°≤Z*β j ＜360°≤Z*α i <720°。
4. A stator lamination as defined in claim 3 wherein Z is more than or equal to 90 degrees and less than or equal to 180 degrees, and Z is less than or equal to 360 degrees and less than or equal to 540 degrees.
5. The stator lamination of claim 1, wherein The center line of each tooth arc section and the center line of each concave part are respectively overlapped with the center line of one tooth part; Each slot part arc section corresponds to one stator slot in the radial direction; The radius of the tooth arc section is the same as that of the groove arc section, and The distance from any point on the contour line of the concave part to the center of the stator punching sheet is smaller than the radius of the tooth arc section and the groove arc section.
6. The stator plate of claim 5 wherein the stator plate is, The contour line shape of at least two of the concave portions is different.
7. A stator, characterized by comprising: a stator core comprising a plurality of stator laminations according to any one of claims 1 to 6.
8. A permanent magnet motor characterized by comprising a stator according to claim 7.
9. A compressor characterized by comprising a permanent magnet motor according to claim 8.
10. A refrigeration device characterized by comprising a compressor according to claim 9.

Description

Stator punching sheet, stator, permanent magnet motor, compressor and refrigeration equipment Technical Field The utility model relates to the field of refrigeration equipment, in particular to a stator punching sheet, a stator, a permanent magnet motor, a compressor and refrigeration equipment. Background With the trend of miniaturization and high efficiency of air conditioners, there is also a demand for miniaturization and high efficiency of the size of compressors, and corresponding miniaturization and high efficiency of motors as core components of compressors are also required. The permanent magnet motor has the characteristics of high torque density, low manufacturing cost, high efficiency, wide area and the like, and is widely applied to the field of domestic air conditioning cold compressors. To improve the circulation of the stator core cooling oil in the permanent magnet motor, a cut edge is usually punched on the outer circumferential surface of the stator punching sheet. The adoption of the multi-polarization motor structure has obvious effects in improving the power density of the permanent magnet motor and reducing the volume of the compressor. The matching of the number of rotor poles and the number of stator slots of the current main stream is 4-pole 6-slot and 6-pole 9-slot, and 8-pole 12-slot or 10-pole 15-slot structures are needed to realize multi-polarization of the permanent magnet motor, so that the trimming and the tooth parts of the stator punching sheet are in one-to-one correspondence, the motor performance is easily affected by the number of the trimming, and larger electromagnetic noise is caused. Disclosure of utility model An aspect of the present utility model is to provide a stator lamination capable of improving electromagnetic noise of a permanent magnet motor and a compressor. Another object of the present utility model is to provide a stator that solves the above-mentioned problems. It is a further object of the present utility model to provide a permanent magnet motor that solves the above mentioned problems. It is a further object of the present utility model to provide a compressor that solves the above-mentioned problems. It is a further object of the present utility model to provide a refrigeration appliance which solves the above-mentioned problems. According to one aspect of the present utility model, a stator lamination is provided that includes a yoke portion and a plurality of tooth portions. The outer peripheral surface of the yoke comprises a plurality of tooth arc sections, a plurality of groove arc sections and concave parts, wherein the tooth arc sections are arranged between two adjacent tooth arc sections, and the concave parts are arranged between the adjacent tooth arc sections and the groove arc sections and/or between the two adjacent groove arc sections. The number of the stator grooves is Z, Z is an integer multiple of 3, the number of the tooth arc sections is M, the number of the concave parts is P, the number of the groove arc sections is N, the ratio of Z to M is an integer, P+M=Z, and M+N=P. Alternatively, the plurality of tooth arc segments are provided at equal intervals in the circumferential direction on the outer peripheral surface of the yoke. The number of stator grooves is 9, the number of tooth arc sections is 3, the number of concave parts is 6, the number of groove arc sections is 3, or the number of stator grooves is 12, the number of tooth arc sections is 3, the number of concave parts is 9, the number of groove arc sections is 6, or the number of stator grooves is 12, the number of tooth arc sections is 4, the number of concave parts is 8, the number of groove arc sections is 4, the number of stator grooves is 15, the number of tooth arc sections is 3, the number of concave parts is 12, the number of groove arc sections is 9, or the number of stator grooves is 15, the number of tooth arc sections is 5, the number of concave parts is 10, and the number of groove arc sections is 5. Optionally, the included angle formed by the two ends of each tooth arc section and the center of the stator punching sheet is denoted as alpha i, the included angle formed by the two ends of each slot arc section and the center of the stator punching sheet is denoted as beta j, and the included angle is 45 degrees less than or equal to Z is less than or equal to beta j＜360°≤Z*αi degrees and is less than 720 degrees. Alternatively, 90 ° is less than or equal to z×β j is less than or equal to 180 °, and 360 ° is less than or equal to z×α i is less than or equal to 540 °. Optionally, the center line of each tooth arc section and the center line of each concave part are respectively overlapped with the center line of one tooth, each groove arc section corresponds to one stator groove in the radial direction, the radiuses of the tooth arc section and the groove arc section are the same, and the distance from any point on the contour line of the concave part