US 11,864,713 B2
Fan motor
Younggyu Jung, Seoul (KR); Seungjo Baek, Seoul (KR); and Seongho Cho, Seoul (KR)
Assigned to LG Electronics Inc., Seoul (KR)
Appl. No. 16/478,372
Filed by LG Electronics Inc., Seoul (KR)
PCT Filed Jan. 16, 2018, PCT No. PCT/KR2018/000758
§ 371(c)(1), (2) Date Jul. 16, 2019,
PCT Pub. No. WO2018/131988, PCT Pub. Date Jul. 19, 2018.
Claims priority of application No. 10-2017-0006985 (KR), filed on Jan. 16, 2017.
Prior Publication US 2019/0365167 A1, Dec. 5, 2019
Int. Cl. A47L 5/22 (2006.01); F16C 37/00 (2006.01); H02K 7/14 (2006.01); H02K 9/06 (2006.01); F04D 29/056 (2006.01); F04D 29/046 (2006.01); H02K 5/20 (2006.01)
CPC A47L 5/22 (2013.01) [F16C 37/00 (2013.01); H02K 7/14 (2013.01); H02K 9/06 (2013.01); F04D 29/046 (2013.01); F04D 29/056 (2013.01); H02K 5/207 (2021.01)] 19 Claims
OG exemplary drawing
 
1. A fan motor comprising:
a motor body that defines an accommodation space therein;
a rotary shaft assembly disposed in the accommodation space, the rotary shaft assembly comprising a rotary shaft, a rotor disposed on the rotary shaft, and a bearing disposed on the rotary shaft;
a stator that surrounds an outer circumference of the rotor and that is disposed in the accommodation space of the motor body;
an impeller connected to the rotary shaft; and
a bracket that is disposed in the accommodation space of the motor body and that comprises a bearing housing portion that accommodates the bearing,
wherein the bearing housing portion defines a bearing heat dissipation flow path that is configured to guide an air moved by the impeller through a space defined between the bearing housing portion and an outer circumferential surface of the bearing and that is configured to discharge the air to an outside of the bearing housing portion,
wherein the bearing heat dissipation flow path comprises a plurality of bearing heat dissipation flow paths that is disposed at the bearing housing portion and spaced apart from one another along the outer circumferential surface of the bearing, and
wherein an inner circumferential surface of the bearing housing portion defines a plurality of contact surfaces that is in contact with the outer circumferential surface of the bearing and disposed between the plurality of bearing heat dissipation flow paths, the plurality of contact surfaces being spaced apart from one another in a circumferential direction of the bearing housing portion.