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：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：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：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.

公开(公告)号：US20230332623A1

公开(公告)日：2023-10-19

申请号：US18339639

申请日：2023-06-22

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 ,  F04D29/325 ,  F04D25/06 ,  H02K9/06 ,  F04D25/082 ,  F04D25/0606 ,  F04D29/444

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：US20240178717A1

公开(公告)日：2024-05-30

申请号：US18488445

申请日：2023-10-17

Applicant: LG Electronics Inc.

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

IPC: H02K5/173 ,  F04D25/06 ,  F04D29/056 ,  F04D29/26 ,  F04D29/32 ,  F04D29/70 ,  F16C35/04 ,  H02K7/08 ,  H02K21/16

CPC classification number: H02K5/1732 ,  F04D25/06 ,  F04D29/056 ,  F04D29/263 ,  F04D29/325 ,  F04D29/703 ,  F16C35/042 ,  H02K7/083 ,  H02K21/16 ,  A47L5/24 ,  F16C2360/46

Abstract: A fan motor is disclosed. The fan motor includes a rotating shaft, a motor, a bearing, a bearing housing, a preload applying device, and a bush. The preload applying device is disposed between one axial end of the bearing and the bearing housing, and applies force to the one axial end of the bearing in an axial direction by using elastic force. The bush is coupled to an outer circumferential surface of the bearing and slidably mounted on an inner circumferential surface of the bearing housing in an axial direction. A protrusion is formed on one axial end portion of the bush, and a protrusion accommodating groove is formed on an axial inner surface of the bearing housing. Accordingly, the preload applying device can continuously apply an appropriate preload to the bearing, while the bush can suppress slipping of an outer ring of the bearing.

公开(公告)号：US20240120796A1

公开(公告)日：2024-04-11

申请号：US18356529

申请日：2023-07-21

Applicant: LG Electronics Inc.

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

IPC: H02K5/173 ,  F04D25/06 ,  F04D29/58 ,  F16C37/00 ,  H02K5/18 ,  H02K7/08 ,  H02K9/06 ,  H02K21/16

CPC classification number: H02K5/1732 ,  F04D25/06 ,  F04D29/582 ,  F16C37/007 ,  H02K5/18 ,  H02K7/083 ,  H02K9/06 ,  H02K21/16 ,  A45D20/00 ,  F16C2380/26

Abstract: A fan motor is disclosed. The fan motor includes an impeller, a rotational shaft, a plurality of bearings, and a heat dissipation fin. The impeller is mounted on the rotational shaft. The plurality of bearings support the rotational shaft. The heat dissipation fin is mounted on the rotational shaft and includes rotating blades rotating centering on the rotational shaft. According to this, the heat dissipation fin may cool the bearing by using convection.

公开(公告)号：US20210348616A1

公开(公告)日：2021-11-11

申请号：US17206857

申请日：2021-03-19

Applicant: LG Electronics Inc.

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

IPC: F04D25/06 ,  F04D29/08

Abstract: A fan motor includes a shroud, a rotating shaft that is disposed inside the shroud and includes a first support portion, a second support portion, and a permanent magnet mounting portion disposed between the first support portion and the second support portion, an impeller disposed at a first end portion of the rotating shaft, an air bearing that is disposed adjacent to the impeller and defines an air gap facing the first support portion, a permanent magnet disposed at the permanent magnet mounting portion between the first end portion and a second end portion of the rotating shaft opposite to the first end portion in the axial direction, and a ball bearing disposed at the second end portion of the rotating shaft and configured to rotatably support the second support portion.