Title:
ROTOR STRUCTURE, MOTOR STRUCTURE, AND LAUNDRY TREATMENT DEVICE
Document Type and Number:
WIPO Patent Application WO/2022/237024
Kind Code:
A1
Abstract:
Embodiments of the present application provide a rotor structure, a motor structure, and a laundry treatment device. The rotor structure comprises: a rotor iron core, a plurality of permanent magnet slots being provided on the rotor iron core, and the plurality of permanent magnet slots being provided in the circumferential direction of the rotor iron core; permanent magnets disposed in the permanent magnet slots; and magnetic barriers disposed on the rotor iron core, the rotor structure being capable of unidirectional rotation or bidirectional rotation in the circumferential direction, at least one side of each permanent magnet slot being provided with a magnetic barrier in the rotation direction of the rotor structure, and two ends of each magnetic barrier respectively facing the permanent magnet and the outer edge of the rotor iron core. In the technical solution of the present application, on the one hand, while suppressing the quadrature axis armature reaction of the motor, relieving the degree of magnetic saturation and reducing the load counter-electromotive force, and improving the torque density and overload capacity of the motor, the positions of the magnetic barriers can be configured according to the limit of the rotation direction of the rotor structure; on the other hand, the rotor iron core is hollowed to provide magnetic barriers, and thus, the amount of rare earth permanent magnets can also be reduced.
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Inventors:
YANG XIONG (CN)
LI WENRUI (CN)
LI WENRUI (CN)
Application Number:
PCT/CN2021/118057
Publication Date:
November 17, 2022
Filing Date:
September 13, 2021
Export Citation:
Assignee:
MIDEA WELLING MOTOR TECH SHANGHAI CO LTD (CN)
International Classes:
H02K1/27; H02K29/03
Foreign References:
| CN113162276A | 2021-07-23 | |||
| CN113113992A | 2021-07-13 | |||
| CN113162275A | 2021-07-23 | |||
| CN211296516U | 2020-08-18 | |||
| CN111914442A | 2020-11-10 | |||
| CN210246428U | 2020-04-03 | |||
| CN106208450A | 2016-12-07 | |||
| CN202110507285A | 2021-05-10 | |||
| CN202120984733U | 2021-05-10 |
Attorney, Agent or Firm:
YOULINK INTELLECTUAL PROPERTY LAW FIRM (CN)
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