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Title:
MAGNETIC SUSPENSION BEARING, MOTOR, COMPRESSOR AND AIR CONDITIONER
Document Type and Number:
WIPO Patent Application WO/2023/029538
Kind Code:
A1
Abstract:
Provided are a magnetic suspension bearing, a motor, a compressor, and an air conditioner. The magnetic suspension bearing comprises an axial magnetic field control portion, a radial magnetic field control portion, and a rotor assembly. The rotor assembly comprises a rotor core (2). The axial magnetic field control portion comprises an axial control end opposite to the end face of the rotor core (2). The axial control end is provided with an axial control winding (3). The radial magnetic field control portion comprises a radial control end opposite to the peripheral surface of the rotor core (2). The radial control end is provided with a radial control winding (4). Permanent magnets (1) are provided between the axial magnetic field control portion and the radial magnetic field control portion at two ends, respectively. The permanent magnets (1) provide bias magnetic fields for the axial magnetic field control portion at the end where the permanent magnets (1) are located. The permanent magnets (1) at two ends jointly provide the bias magnetic field for the radial magnetic field control portion. According to the magnetic suspension bearing, front and rear axial control magnetic fields can be mutually independent and do not interfere with each other, front and rear axial control systems are independent, the control logic is simplified, and the system stability is improved.

Inventors:
HU YUSHENG (CN)
GUO WEILIN (CN)
GONG GAO (CN)
ZHANG FANG (CN)
ZHANG CHAO (CN)
WU RUI (CN)
Application Number:
PCT/CN2022/090131
Publication Date:
March 09, 2023
Filing Date:
April 29, 2022
Export Citation:
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Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
F16C32/04
Foreign References:
CN113586609A2021-11-02
CN113315304A2021-08-27
US20030057784A12003-03-27
EP0768467A11997-04-16
CN213575188U2021-06-29
CN112160987A2021-01-01
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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