US 12,206,287 B2
Single-phase permanent magnet synchronous motor and dust collector
Yusheng Hu, Guangdong (CN); Bin Chen, Guangdong (CN); Yong Xiao, Guangdong (CN); Zhidong Zhang, Guangdong (CN); Jinfei Shi, Guangdong (CN); Shengyu Xiao, Guangdong (CN); Xia Li, Guangdong (CN); Lin Tang, Guangdong (CN); Shaoxuan Zhu, Guangdong (CN); Pengqian Gui, Guangdong (CN); Hui Sun, Guangdong (CN); and Jiating Ding, Guangdong (CN)
Assigned to Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
Appl. No. 17/765,299
Filed by Gree Electric Appliances, Inc. of Zhuhai, Guangdong (CN)
PCT Filed Aug. 25, 2020, PCT No. PCT/CN2020/111027
§ 371(c)(1), (2) Date Mar. 30, 2022,
PCT Pub. No. WO2021/114723, PCT Pub. Date Jun. 17, 2021.
Claims priority of application No. 201911253540.X (CN), filed on Dec. 9, 2019.
Prior Publication US 2022/0368181 A1, Nov. 17, 2022
Int. Cl. H02K 1/16 (2006.01); H02K 1/14 (2006.01); H02K 1/27 (2022.01); H02K 19/04 (2006.01)
CPC H02K 1/27 (2013.01) [H02K 1/141 (2013.01); H02K 1/16 (2013.01); H02K 19/04 (2013.01); H02K 2201/03 (2013.01); H02K 2213/03 (2013.01)] 16 Claims
OG exemplary drawing
 
1. A single-phase permanent magnet synchronous motor, comprising a plurality of types of stator teeth, the plurality of types of stator teeth comprising at least:
a first-type stator tooth; and
a second-type stator tooth, the first-type stator tooth and the second-type stator tooth enclosing an annular working cavity for accommodating a rotor part,
wherein the size of a central angle corresponding to a first contour line of an end face of the first-type stator tooth facing the rotor part is different from the size of a central angle corresponding to a second contour line of an end face of the second-type stator tooth facing the rotor part,
wherein there are a plurality of first-type stator teeth and a plurality of second-type stator teeth, and the plurality of first-type stator teeth and the plurality of second-type stator teeth enclose the annular working cavity; and the plurality of first-type stator teeth at least comprise two first-type stator teeth arranged adjacent to each other, and the plurality of second-type stator teeth at least comprise two first-type stator teeth arranged adjacent to each other; or
wherein the plurality of first-type stator teeth at least comprise two first-type stator teeth arranged adjacent to each other, or the plurality of second-type stator teeth at least comprise two first-type stator teeth arranged adjacent to each other;
wherein the single-phase permanent magnet synchronous motor comprises: a first stator body, with the plurality of first-type stator teeth being connected to the first stator body; and a second stator body, the second stator body being arranged opposite to the first stator body, with the plurality of second-type stator teeth being connected to the second stator body;
wherein a central angle formed by connecting lines between two geometric centers of the first contour lines of two adjacent first-type stator teeth and the geometric center of the rotor part is γ1, and a central angle formed by connecting lines between two geometric centers of two adjacent second contour lines of the second stator body and the geometric center of the rotor part is γ1; or
wherein a central angle formed by connecting lines between two geometric centers of the first contour lines of two adjacent first-type stator teeth and the geometric center of the rotor part is γ1, or a central angle formed by connecting lines between two geometric centers of two adjacent second contour lines of the second stator body and the geometric center of the rotor part is γ1, wherein γ1=2π/s, where s is the total number of the first-type stator tooth and the second-type stator tooth.