Title:
SINGLE-PHASE PERMANENT MAGNET SYNCHRONOUS ELECTRIC MOTOR, AND DUST COLLECTOR
Document Type and Number:
WIPO Patent Application WO/2021/114723
Kind Code:
A1
Abstract:
Disclosed are a single-phase permanent magnet synchronous electric motor, and a dust collector. The single-phase permanent magnet synchronous electric motor comprises multiple types of stator teeth. The multiple types of stator teeth at least comprise a first type of stator teeth (10), and a second type of stator teeth (20), wherein the first type of stator teeth (10) and the second type of stator teeth (20) enclose to form an annular working cavity for containing a rotor portion (30); the angle of a central angle corresponding to a first contour line of end surfaces, facing the rotor portion (30), of the first type of stator teeth (10) is different from the angle of a central angle corresponding to a second contour line of end surfaces, facing the rotor portion (30), of the second type of stator teeth (20). Compared with a common single-phase permanent magnet electric motor, the cogging torque of the present electric motor is greatly reduced, the torque ripple is greatly reduced, and the output torque of the electric motor is also significantly improved. The single-phase permanent magnet synchronous electric motor is small in size, is light in weight, is simple in terms of structure, can be conveniently manufactured on a large scale and has low manufacturing costs.
Inventors:
HU YUSHENG (CN)
CHEN BIN (CN)
XIAO YONG (CN)
ZHANG ZHIDONG (CN)
SHI JINFEI (CN)
XIAO SHENGYU (CN)
LI XIA (CN)
TANG LIN (CN)
ZHU SHAOXUAN (CN)
GUI PENGQIAN (CN)
SUN HUI (CN)
DING JIATING (CN)
CHEN BIN (CN)
XIAO YONG (CN)
ZHANG ZHIDONG (CN)
SHI JINFEI (CN)
XIAO SHENGYU (CN)
LI XIA (CN)
TANG LIN (CN)
ZHU SHAOXUAN (CN)
GUI PENGQIAN (CN)
SUN HUI (CN)
DING JIATING (CN)
Application Number:
PCT/CN2020/111027
Publication Date:
June 17, 2021
Filing Date:
August 25, 2020
Export Citation:
Assignee:
GREE ELECTRIC APPLIANCES INC ZHUHAI (CN)
International Classes:
H02K1/12
Foreign References:
| US4583015A | 1986-04-15 | |||
| US4583015A | 1986-04-15 | |||
| JPH0556614A | 1993-03-05 | |||
| US20060097598A1 | 2006-05-11 | |||
| CN211151633U | 2020-07-31 | |||
| CN110912293A | 2020-03-24 | |||
| JPS5869457A | 1983-04-25 | |||
| JPH06113515A | 1994-04-22 | |||
| JPS6218958A | 1987-01-27 |
Other References:
See also references of EP 4024664A4
Attorney, Agent or Firm:
ADVANCE CHINA IP LAW OFFICE (CN)
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