公开(公告)号：US20240125326A1

公开(公告)日：2024-04-18

申请号：US18466403

申请日：2023-09-13

Applicant: LG Electronics Inc.

Inventor： Jisu HWANG ,  Byungjik KIM ,  Eunji HWANG ,  Sunggi KIM ,  Yoonchul RHIM

IPC: F04D25/06 ,  F04D29/056 ,  F16C19/18 ,  H02K5/173

CPC classification number: F04D25/06 ,  F04D29/056 ,  F16C19/18 ,  H02K5/1735 ,  F16C2360/46

Abstract: A fan motor includes a rotating shaft on which an impeller is mounted, a motor unit for driving the rotating shaft, a plurality of bearings supporting the rotating shaft, a spring serially disposed between the plurality of bearings to axially apply force to an outer ring of one of the plurality of bearings, and a cylinder brought into contact with the spring to transfer elastic pressing force of the spring to the outer ring of the bearing. Accordingly, by applying a preload to the outer ring of the bearing, a ball of the bearing can be restricted from moving axially and radially between the outer ring and an inner ring of the bearing. The spring has a structure that is surface-contactable and has a length shorter than a diameter, and does not require a separate cartridge such as a sleeve for fixing the spring.

公开(公告)号：US20220010811A1

公开(公告)日：2022-01-13

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 ,  F04D25/06 ,  F04D29/32

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：US20220128062A1

公开(公告)日：2022-04-28

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 ,  F04D29/32 ,  F04D29/053 ,  F04D29/056

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：US20200166045A1

公开(公告)日：2020-05-28

申请号：US16688331

申请日：2019-11-19

Applicant: LG ELECTRONICS INC.

Inventor： Changlae KIM ,  Sunggi KIM ,  Byungjik KIM ,  Taeho KIM

IPC: F04D29/052 ,  F04D27/00 ,  F16D13/04 ,  F16D13/44

Abstract: Disclosed herein is a motor including a bearing in which a rolling member is disposed between an inner ring and an outer ring, a spring connected to the outer ring, and a pusher connected to the spring to be retracted to a first position spaced apart from the inner ring by the spring, and to be advanced to a second position at which friction with the inner ring is caused by a pressure of air acting on a pressure surface when the pressure surface on which the pressure of air flowing by the impeller acts is formed, wherein the inner ring is spaced apart from the rotating shaft by a gap formed between the inner ring and the rotating shaft when the pusher is at the second position.

公开(公告)号：US20200067371A1

公开(公告)日：2020-02-27

申请号：US16549583

申请日：2019-08-23

Applicant: LG Electronics Inc.

Inventor： Sunggi KIM ,  Byungjik KIM ,  Changlae KIM

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

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：US20200063576A1

公开(公告)日：2020-02-27

申请号：US16540451

申请日：2019-08-14

Applicant: LG Electronics Inc.

Inventor： Changlae KIM ,  Byungjik KIM ,  Sunggi KIM ,  Sanghyun HONG

IPC: F01D5/28 ,  F04D29/66 ,  F04D29/22

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：US20240349863A1

公开(公告)日：2024-10-24

申请号：US18685112

申请日：2021-08-30

Applicant: LG ELECTRONICS INC.

Inventor： Sunggi KIM ,  Byungjik KIM ,  Eunji HWANG ,  Hyunjoo OH ,  Jisu HWANG

IPC: A45D20/12

CPC classification number: A45D20/12

Abstract: Provided may be a hair dryer comprising: a main body part including a gas outlet part; a handle extending downwardly from the main body part and including a handle case and an air inlet part; an airflow path extending from the air inlet part to the gas outlet part through which gas flows; a fan unit provided inside the handle and flowing gas; and a battery module provided inside the handle and disposed on the airflow path, wherein the battery module is located below the fan unit, the airflow path includes a lower passage formed by a space spaced apart between the handle case and the battery module, and the air inlet part is formed at a position corresponding to the lower passage, such that the hair dryer can safely and efficiently arrange the fan unit and the battery module inside the handle.

公开(公告)号：US20240093689A1

公开(公告)日：2024-03-21

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

CPC classification number: F04D25/0606 ,  F04D17/165 ,  F04D25/082 ,  F04D29/049 ,  F04D29/584

Abstract: A fan motor is disclosed. The 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：US20200373807A1

公开(公告)日：2020-11-26

申请号：US16993937

申请日：2020-08-14

Applicant: LG Electronics Inc.

Inventor： Eunji HWANG ,  Sunggi KIM ,  Hangjin BAN

IPC: H02K5/173 ,  A47L9/00 ,  H02K5/20 ,  H02K9/06

Abstract: A motor includes a motor housing, a rotating shaft assembly including a rotating shaft, a rotor, and a bearing in which the rotor and the bearing are mounted to the rotating shaft. The motor further includes a stator installed in the motor housing, the stator surrounding the rotor, a bracket mounted to the motor housing, and an elastic mesh that defines a plurality of pores, that is disposed between the bracket and the bearing, and that contacts at least one of the bracket or the bearing.

公开(公告)号：US20240349862A1

公开(公告)日：2024-10-24

申请号：US18684952

申请日：2021-08-30

Applicant: LG ELECTRONICS INC.

Inventor： Eunji HWANG ,  Byungjik KIM ,  Hyunjoo OH ,  Sunggi KIM ,  Jisu HWANG

IPC: A45D20/12 ,  H05B3/08

CPC classification number: A45D20/12 ,  H05B3/08 ,  H05B2203/035

Abstract: A hair dryer, which can be used simultaneously in wired and wireless manners, comprises: a main body comprising a gas discharge part through which a gas is discharged to outside; a handle part which is extended downward from the main body and includes a gas inlet part through which the gas flows in from outside; a gas flow path comprising a first flow path which is connected to the gas inlet part and located in the handle portion, and a second flow path which is extended from the first flow path to the gas discharge part and located in the main body; a temperature adjusting unit located on the second flow path; a battery module mounted in the handle portion; a power terminal which supplies electric power to the battery module; and a controller which switches from a direct current mode to an alternating current mode when the electric power is supplied through the power terminal.