US 11,658,526 B2
Motor, fan, air conditioning apparatus, and method for manufacturing motor
Hiroki Aso, Tokyo (JP); Takaya Shimokawa, Tokyo (JP); Junichiro Oya, Tokyo (JP); and Naoki Tamura, Tokyo (JP)
Assigned to Mitsubishi Electric Corporation, Tokyo (JP)
Appl. No. 17/255,046
Filed by Mitsubishi Electric Corporation, Tokyo (JP)
PCT Filed Aug. 2, 2018, PCT No. PCT/JP2018/029015
§ 371(c)(1), (2) Date Dec. 22, 2020,
PCT Pub. No. WO2020/026408, PCT Pub. Date Feb. 6, 2020.
Prior Publication US 2021/0376674 A1, Dec. 2, 2021
Int. Cl. H02K 1/27 (2022.01); H02K 1/2733 (2022.01); F24F 1/0007 (2019.01); H02K 21/14 (2006.01); H02K 29/08 (2006.01); H02K 29/03 (2006.01)
CPC H02K 1/2733 (2013.01) [F24F 1/0007 (2013.01); H02K 21/14 (2013.01); H02K 29/08 (2013.01); H02K 29/03 (2013.01); H02K 2213/03 (2013.01)] 7 Claims
OG exemplary drawing
 
1. A motor comprising:
a rotor including a resin magnet having a polar anisotropic orientation and a radial orientation and a shaft fixed to the resin magnet;
a stator; and
a magnetic pole position detection element to detect a position of a magnetic pole of the rotor, wherein
the magnetic pole position detection element faces the resin magnet in an axial direction, wherein
the resin magnet includes:
a first magnetic flux generating part having the polar anisotropic orientation; and
a second magnetic flux generating part having the radial orientation and located between the first magnetic flux generating part and the magnetic pole position detection element, and
the motor satisfies r1≥r3>r2
where r1 is an outer diameter of the first magnetic flux generating part, r2 is an outer diameter of the second magnetic flux generating part, and r3 is a distance from a rotation center of the rotor to a center of the magnetic pole position detection element.