US 11,996,733 B2
Permanent magnet motor, compressor and air conditioner
Zhengzhong Qiao, Guangdong (CN); Linshu Mao, Guangdong (CN); Xiaohua Qiu, Guangdong (CN); Fei Xu, Guangdong (CN); and Yulong Wang, Guangdong (CN)
Assigned to GUANGDONG MEIZHI COMPRESSOR CO., LTD., Guangdong (CN)
Filed by GUANGDONG MEIZHI COMPRESSOR CO., LTD., Guangdong (CN)
Filed on Dec. 18, 2020, as Appl. No. 17/126,559.
Application 17/126,559 is a continuation of application No. PCT/CN2018/115876, filed on Nov. 16, 2018.
Claims priority of application No. 201810843967.4 (CN), filed on Jul. 27, 2018; and application No. 201821213287.6 (CN), filed on Jul. 27, 2018.
Prior Publication US 2021/0143690 A1, May 13, 2021
Int. Cl. H02K 1/16 (2006.01); H02K 1/02 (2006.01); H02K 3/18 (2006.01); H02K 3/28 (2006.01)
CPC H02K 1/165 (2013.01) [H02K 1/02 (2013.01); H02K 3/18 (2013.01); H02K 3/28 (2013.01); H02K 2213/03 (2013.01)] 10 Claims
OG exemplary drawing
 
1. A permanent magnet motor comprising:
a stator comprising a stator core and a stator winding, the stator core comprising a plurality of stator teeth arranged along a peripheral direction of the stator core, a stator slot being defined between two adjacent stator teeth, and the stator winding being wound on the stator tooth; and
a rotor spaced apart from the stator in a radially inner/outer direction, and comprising a rotor core and a permanent magnet embedded in the rotor core, wherein a maximum distance between an outer peripheral contour of a cross section of the rotor and a center of the cross section of the rotor is D1, an axial length of the rotor core is L, a rated power of the permanent magnet motor is P, wherein D1, L and P satisfy: D1/L≥1.7 and P/(D12×L)≥8.5(W/cm3), wherein a unit of P is W and units of D1 and L are cm.