Title:
MOTOR ROTOR, MOTOR, COMPRESSOR, AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/184972
Kind Code:
A1
Abstract:
The present disclosure relates to the technical field of motors, and disclosed are a motor rotor, a motor, a compressor, and an air conditioner. The motor rotor comprises a rotor iron core axially provided with a plurality of magnetic steel slots; the side of the magnetic steel slots close to the periphery of the motor rotor is provided with a magnetic isolation hole group which is symmetrical about the d axis of the motor rotor; the magnetic isolation hole group comprises first magnetic isolation holes formed in two sides and second magnetic isolation holes located between the two first magnetic isolation holes; and at least one second magnetic isolation hole meets the condition that the width close to the periphery of the motor rotor is less than the width away from the periphery of the motor rotor. The width of the second magnetic isolation hole is defined, such that the second magnetic isolation hole conforms to the trend of a lower magnetic circuit of each magnetic pole in the motor rotor, the magnetic resistance under a rotor magnetic pole is positively correlated with the density of magnetic lines of force, more magnetic lines of force flow from a place where the magnetic resistance is relatively small under the magnetic pole, the magnetic density inside the rotor is uniformly distributed, the magnetic density at rotor magnetic steel is more uniform, the rotor magnetic density mutation and harmonic content are reduced, the tooth slot torque ripple is reduced, and the vibration and the noise are suppressed.
Inventors:
ZHANG HUAFENG (CN)
BAI LINYUAN (CN)
ZHOU BO (CN)
BAI LINYUAN (CN)
ZHOU BO (CN)
Application Number:
PCT/CN2022/129019
Publication Date:
October 05, 2023
Filing Date:
November 01, 2022
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
H02K1/274; H02K1/27
Foreign References:
| CN114709950A | 2022-07-05 | |||
| CN111697729A | 2020-09-22 | |||
| JP2005027422A | 2005-01-27 | |||
| CN204156698U | 2015-02-11 | |||
| JP2011120333A | 2011-06-16 |
Attorney, Agent or Firm:
BEIJING XURUN LAW FIRM (CN)
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