公开(公告)号：US11441570B2

公开(公告)日：2022-09-13

申请号：US16816850

申请日：2020-03-12

Applicant: LG Electronics Inc.

Inventor： Eunji Hwang ,  Byungjik Kim ,  Sunggi Kim ,  Jisu Hwang

IPC: F04D29/02 ,  F04D25/08 ,  F04D29/62 ,  F04D29/44 ,  F04D17/08 ,  F04D19/00

Abstract: An embodiment of the present disclosure discloses a motor assembly including a rotation shaft, an impeller including a hub fastened to the rotation shaft, and a plurality of blades protruding outward from an outer surface of the hub, an inlet body for surrounding an outer circumference of the impeller, and a coating layer coated on an inner surface of the inlet body, wherein at least a portion of the coating layer is ground in a form of powder by friction with the plurality of blades during rotation of the impeller.

公开(公告)号：US12173718B2

公开(公告)日：2024-12-24

申请号：US18356549

申请日：2023-07-21

Applicant: LG Electronics Inc.

Inventor： Eunji Hwang ,  Byungjik Kim ,  Sunggi Kim ,  Jisu Hwang

IPC: F04D25/06 ,  F04D17/16 ,  F04D25/08 ,  F04D29/049 ,  F04D29/58

Abstract: A fan motor includes a heat dissipation fin. The heat dissipation fin includes an outer ring part, an inner ring part disposed inside the outer ring part, and a connection part connecting the outer ring part and the inner ring part. The inner ring part is elastically deformed to be inclined in parallel to a rotational shaft which is inclined when axial alignment between bearings is not made. Accordingly, the heat dissipation fin can reduce a temperature of the bearing while enclosing the bearing, and improve concentricity (axial alignment) of the bearing.

公开(公告)号：US11725671B2

公开(公告)日：2023-08-15

申请号：US17370557

申请日：2021-07-08

Applicant: LG Electronics Inc.

Inventor： Sunggi Kim ,  Byungjik Kim ,  Eunji Hwang ,  Jisu Hwang

IPC: F04D29/58 ,  F04D29/32 ,  F04D25/06 ,  H02K9/06 ,  F04D25/08 ,  F04D29/44

CPC classification number: F04D29/584 ,  F04D25/06 ,  F04D25/0606 ,  F04D25/082 ,  F04D29/325 ,  F04D29/444 ,  H02K9/06

Abstract: A fan motor includes a housing, a rotating shaft that is rotatably disposed in the housing and extends through the housing, an impeller rotatably disposed at the rotating shaft, a first vane disposed adjacent to the impeller and configured to guide a flow of air generated by the impeller, a rotor disposed at the rotating shaft and spaced apart from the impeller in an axial direction of the rotating shaft, a stator that is disposed in the housing and surrounds the rotor, the stator and the rotor defining an air gap therebetween, and a second vane coupled to the stator and disposed downstream relative to the first vane in a flow direction of the flow of air. The second vane is in contact with at least a part of an inner surface of the housing.

公开(公告)号：US11637487B2

公开(公告)日：2023-04-25

申请号：US16821431

申请日：2020-03-17

Applicant: LG Electronics Inc.

Inventor： Sunggi Kim ,  Byungjik Kim ,  Eunji Hwang ,  Jisu Hwang

IPC: H02K15/16 ,  F16C41/02 ,  F16C43/04 ,  H02K15/02 ,  H02K5/16 ,  H02K7/14

Abstract: A motor assembly includes a first bearing installed on a rotating shaft adjacent to an impeller to support a first support part of the rotating shaft, a second bearing installed on the rotating shaft adjacent to the rotor to support a second support part of the rotating shaft, a bearing bracket receiving the first and second bearings therein, an elastic member inserted between the first bearing and the bearing bracket or between the second bearing and the bearing bracket to press either the first bearing or the second bearing to get closer to each other, and a separation preventing member installed on the bearing bracket to fix the first bearing, the second bearing and the elastic member to an inner space of the bearing bracket such that at least one portion of the separation preventing member overlaps with one of the first bearing, the second bearing and the elastic member.

公开(公告)号：US11466729B2

公开(公告)日：2022-10-11

申请号：US16821513

申请日：2020-03-17

Applicant: LG Electronics Inc.

Inventor： Sunggi Kim ,  Byungjik Kim ,  Eunji Hwang ,  Jisu Hwang

IPC: F16C19/56 ,  H02K5/16 ,  H02K7/14

Abstract: A motor assembly includes a rotation shaft, an impeller installed at one side of the rotation shaft, a rotor mounted at the other side of the rotation shaft to be spaced apart from the impeller along an axial direction of the rotation shaft, a stator surrounding an outer face of the rotor such that the stator is spaced apart from the rotor along a radial direction of the rotation shaft, a first bearing installed at the one side of the rotation shaft between the impeller and the rotor, and a second bearing installed at the other side of the rotation shaft, opposite to the first bearing with respect to the rotor, and disposed to be axially closer to the other end of the rotation shaft than the rotor. An outer diameter of the first bearing is larger than an outer diameter of the second bearing.

公开(公告)号：US11976666B2

公开(公告)日：2024-05-07

申请号：US17217580

申请日：2021-03-30

Applicant: LG Electronics Inc.

Inventor： Sunggi Kim ,  Byungjik Kim ,  Eunji Hwang ,  Jisu Hwang

IPC: F04D29/26 ,  F04D25/06 ,  F04D25/08 ,  F04D29/053 ,  F04D29/056 ,  F04D29/32

CPC classification number: F04D29/263 ,  F04D25/0606 ,  F04D25/082 ,  F04D29/053 ,  F04D29/056 ,  F04D29/325

Abstract: A fan motor includes: a housing, a rotation shaft oriented across an inner center of the housing, an impeller located at a first side of the rotation shaft, a rotor connected to the rotation shaft and spaced apart from the impeller in an axial direction, a stator that surrounds the rotor, a first bearing located at a first end of the rotation shaft, a second bearing that is located at a second end of the rotation shaft and that is configured to rotatably support the rotation shaft, and a first bearing housing that accommodates and supports the first bearing, that is fixed inside the housing, and that is configured to guide a flow of air introduced into the housing.

公开(公告)号：US11466695B2

公开(公告)日：2022-10-11

申请号：US16821380

申请日：2020-03-17

Applicant: LG Electronics Inc.

Inventor： Sunggi Kim ,  Byungjik Kim ,  Eunji Hwang ,  Jisu Hwang

IPC: F04D29/056 ,  F04D25/06 ,  H02K5/173 ,  H02K7/08 ,  F16C19/06 ,  H02K5/20 ,  H02K9/06 ,  F04D29/043 ,  F04D29/049 ,  F04D29/18 ,  F04D29/40 ,  H02K15/14 ,  F04D29/059 ,  F04D29/057 ,  H02K5/16 ,  F04D25/08 ,  F04D29/02 ,  F04D29/058 ,  F04D29/047 ,  F04D29/05 ,  F04D13/06 ,  F04D29/42

Abstract: A motor assembly includes a rolling bearing installed on a rotation shaft between an impeller and a rotor to support a first support of the rotation shaft, and a motor housing having a stator. The motor housing has a gas bearing bracket for accommodating a second support of the rotation shaft disposed at a side opposite to the first support with respect to the rotor. The motor assembly includes a gas bearing assembly in the gas bearing bracket to support rotation of the second support of the rotation shaft. The gas bearing assembly includes a gas bearing for surrounding the second support. The gas bearing is spaced apart from the second support of the rotation shaft to define a gap therebetween when the rotation shaft rotates. The gas bearing assembly includes an elastic member interposed between the gas bearing bracket and the gas bearing to elastically support the gas bearing.