Patent ID: 11864713
Assignee: LG ELECTRONICS INC.
Field: Electrical machinery, apparatus, energy (Electrical engineering)
Classification: CPC A  H  F | IPC A  F  H

Claim 14:
15. A fan motor comprising:
a motor body;
a rotary shaft assembly disposed in the motor body, 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 is disposed in the motor body and that surrounds an outer circumference of the rotor;
an impeller connected to the rotary shaft; and
a bracket that is disposed in the motor body and that comprises a bearing housing portion that accommodates the bearing,
wherein the bearing comprises:
an inner rim fixed to the rotary shaft,
an outer rim spaced apart from the inner rim, and
a rolling member disposed between the inner rim and the outer rim,

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 outer rim 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 outer rim, 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.