公开(公告)号：US11859639B2

公开(公告)日：2024-01-02

申请号：US17510793

申请日：2021-10-26

Applicant: LG Electronics Inc.

Inventor： Changlae Kim ,  Byungjik Kim ,  Sunggi Kim ,  Sanghyun Hong

IPC: F04D29/52 ,  F04D29/62 ,  F01D5/28 ,  F04D29/22 ,  F04D29/66 ,  F04D29/16

CPC classification number: F04D29/526 ,  F01D5/288 ,  F04D29/162 ,  F04D29/2222 ,  F04D29/622 ,  F04D29/666

Abstract: A fan motor according to an embodiment of the present invention may include: an impeller a hub connected to a rotary shaft and at least one blade formed on the outer surface of the hub; a shroud surrounding the outer circumference of the impeller; and a coating layer coated on the inner circumferential surface of the shroud. The coating layer may include: a polymer having strength lower than the strength of the blade; and a plurality of beads mixed with the polymer and having strength higher than the strength of the polymer.

公开(公告)号：US11187245B2

公开(公告)日：2021-11-30

申请号：US16540451

申请日：2019-08-14

Applicant: LG Electronics Inc.

Inventor： Changlae Kim ,  Byungjik Kim ,  Sunggi Kim ,  Sanghyun Hong

IPC: F04D29/42 ,  F04D29/52 ,  F01D5/28 ,  F04D29/22 ,  F04D29/66 ,  F01D11/12

Abstract: A fan motor according to an embodiment of the present invention may include: an impeller a hub connected to a rotary shaft and at least one blade formed on the outer surface of the hub; a shroud surrounding the outer circumference of the impeller; and a coating layer coated on the inner circumferential surface of the shroud. The coating layer may include: a polymer having strength lower than the strength of the blade; and a plurality of beads mixed with the polymer and having strength higher than the strength of the polymer.

公开(公告)号：US11431218B2

公开(公告)日：2022-08-30

申请号：US16549583

申请日：2019-08-23

Applicant: LG Electronics Inc.

Inventor： Sunggi Kim ,  Byungjik Kim ,  Changlae Kim

IPC: H02K7/14 ,  H02K5/167 ,  H02K5/173 ,  H02K7/08 ,  H02K15/14 ,  F16C32/06 ,  A47L9/22

Abstract: A motor according to an embodiment of the present invention includes a rotary shaft; a rotor mounted on the rotary shaft; a stator surrounding an outer periphery of the rotor; an impeller mounted on the rotary shaft to be spaced apart from the rotor; a bearing housing positioned between the impeller and the rotor and formed with a through-hole through which the rotary shaft passes; and a gas bearing disposed in the bearing housing, wherein a thickness of the gas bearing is equal to or greater than 50% of a gap between an inner surface of the bearing housing and an outer peripheral surface of the rotary shaft and is equal to or less than 0.3 mm.

公开(公告)号：US11346351B2

公开(公告)日：2022-05-31

申请号：US16688331

申请日：2019-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Changlae Kim ,  Sunggi Kim ,  Byungjik Kim ,  Taeho Kim

IPC: F04D25/06 ,  F04D27/00 ,  F16D13/44 ,  F04D29/057 ,  F16C21/00 ,  F16C17/20 ,  A45D20/00 ,  F16C19/54 ,  F16C32/04

Abstract: A motor includes a bearing having a rolling member disposed between an inner ring and an outer ring, a spring connected to the outer ring, and a pusher connected to the spring and configured to move to a first position spaced apart from the inner ring by the spring. The pusher is further configured to move to a second position at which friction with the inner ring is caused by a pressure of air. The inner ring is spaced apart from the rotating shaft by a gap between the inner ring and the rotating shaft when the pusher is at the second position.

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.