Title:
STATOR CORE, STATOR, PERMANENT-MAGNET SYNCHRONOUS MOTOR, COMPRESSOR, AND REFRIGERATION DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/110311
Kind Code:
A1
Abstract:
The present application provides a stator core, a stator, a permanent-magnet synchronous motor, a compressor, and a refrigeration device. The stator core comprises: a plurality of stator laminations stacked along an axial direction of an inner hole, each stator lamination comprising a plurality of stator teeth distributed in a circumferential direction; each stator tooth comprising a tooth and a tooth shoe connected to the tooth; the plurality of tooth shoes enclose to form the inner hole. The plurality of stator laminations comprise at least one first stator lamination. An inner peripheral wall of the at least one tooth shoe of the first stator lamination is provided with a recessed portion. The tooth shoe comprises a first tooth shoe portion, and a part of the recessed portion is located in an area of the symmetrical center line of the tooth facing the side of the first tooth shoe portion. In this way, the radial electromagnetic force wave generated by the effect of the armature magnetic field harmonic and the rotor magnetic field harmonic is reduced, the deformation of the stator core is reduced, the vibration noise of the key frequency band of the motor is significantly improved, and the listening experience of the compressor is effectively improved.
Inventors:
XU FEI (CN)
QIU XIAOHUA (CN)
JIANG BO (CN)
QIU XIAOHUA (CN)
JIANG BO (CN)
Application Number:
PCT/CN2020/134990
Publication Date:
June 02, 2022
Filing Date:
December 09, 2020
Export Citation:
Assignee:
ANHUI MEIZHI PREC MANUFACTURING CO LTD (CN)
International Classes:
H02K1/12
Foreign References:
| CN208190359U | 2018-12-04 | |||
| JP2008178258A | 2008-07-31 | |||
| CN202696296U | 2013-01-23 | |||
| JP2013027240A | 2013-02-04 | |||
| JP2005051841A | 2005-02-24 |
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
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