Patent · US Active

Motor rotor and permanent magnet motor

US11735979B2 · kind B2 · utility

0Cited by

0References

18Claims

0Family size

Assignee

GREE ELECTRIC APPLIANCES, INC. OF ZHUHAI · CN

Inventors

Jinxin Jia · Zhuhai, CN
Xiaobo ZHANG · Shanghai, CN
Jianning Liu · 安丰镇, CN
Fang Zhang · Zhuhai, CN
Qiong WEI · Zhuhai, CN
Guanghai Li · Zhuhai, CN
Liming Peng · Zhuhai, CN
Bowen XIONG · Zhuhai, CN

Key dates

Filing date	May 6, 2021
Grant date	Aug 22, 2023
Priority date	—
Expiry date	Jan 25, 2042

Classification

Technology area (CPC H)Electricity
CPC primaryH02K7/003
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

Disclosed are a motor rotor and a permanent magnet motor. The motor rotor includes: a rotating shaft; a magnetic layer fixedly sleeved on the rotating shaft; a first heat diffusion layer wrapped on an outer surface of the magnetic layer away from the rotating shaft for preventing a shielding layer from overheating locally; and the shielding layer wrapped on a surface of the first heat diffusion layer away from the magnetic layer. The first heat diffusion layer is provided between the shielding layer and the magnetic layer of the motor rotor, so that the first heat diffusion layer can prevent the shielding layer and the magnetic layer from overheating locally, and improve heat dissipation efficiency of the shielding layer.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.