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公开(公告)号：US20210288549A1
公开(公告)日：2021-09-16
申请号：US17155889
申请日：2021-01-22
Applicant: LG Electronics Inc.
Inventor： Jaeho KIM , Sunghyun KIM , Kyungho HA
Abstract: A motor includes: an inner housing defining an accommodation space, an outer housing defining a flow path with the inner housing, an impeller disposed at a first side of the inner housing, a power portion that is disposed in the accommodation space and that includes a rotation shaft coupled to the impeller so as to be rotated together with the impeller, a bracket coupled to the inner housing at a second side of the inner housing and rotatably supporting the rotation shaft, and a printed circuit board (PCB) that is spaced apart from the bracket by a predetermined distance and that is electrically connected to the power portion. A circumference of the PCB includes a plurality of concave portions that are spaced apart from each other, and the plurality of concave portions are recessed toward a center of the PCB.
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公开(公告)号：US20220090843A1
公开(公告)日：2022-03-24
申请号：US17459198
申请日：2021-08-27
Applicant: LG Electronics Inc.
Inventor： Kyungho HA
Abstract: A refrigerator includes a cabinet configured to define a storage space, a door configured to open and close the storage space. The door includes an outer plate configured to define an outer appearance of a front surface of the door, a door liner configured to define a rear surface of the door, and a decor member configured to connect the outer plate to the door liner. The decor member includes an inorganic antibacterial agent including a metal component having antibacterial properties and a carrier on which the metal component is supported.
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公开(公告)号：US20210344249A1
公开(公告)日：2021-11-04
申请号：US17130837
申请日：2020-12-22
Applicant: LG Electronics Inc.
Inventor： Jaeho KIM , Sunghyun KIM , Kyungho HA
Abstract: An electric motor assembly includes an outer housing, an impeller rotatably disposed in the outer housing, an inner housing that is disposed in the outer housing and defines an air flow path at an outside of the inner housing, a stator disposed in the inner housing, a rotor disposed in the inner housing, the rotor comprising a rotating shaft coupled to the impeller, a first bearing that is disposed in the inner housing and supports a first side of the rotating shaft, a second bearing that disposed in the inner housing and supports a second side of the rotating shaft, and a bracket that is disposed at the second bearing and that is in contact with an end of the stator. The bracket is coupled to the inner housing in an axial direction of the inner housing.
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公开(公告)号：US20200169132A1
公开(公告)日：2020-05-28
申请号：US16696311
申请日：2019-11-26
Applicant: LG Electronics Inc.
Inventor： Jaeho KIM , Minsoo LA , Hyuk NAM , Kyungmo YU , Sangyoung CHO , Kyungho HA , Pangeun KIM
Abstract: A motor includes a stator and a rotor. The rotor includes: a plurality of rotor core segments arranged along a circumferential direction of the rotor on the inner side or the outer side of the stator and spaced apart from one another to define a plurality of permanent magnet arrangement slots between the plurality of rotor core segments, a plurality of permanent magnets inserted into the plurality of permanent magnet arrangement slots, respectively, a rotor frame that couples the plurality of rotor core segments and the plurality of permanent magnets to each to other, and an outer ring that is made of a non-magnetic material and that surrounds an outer end of the plurality of rotor core segments and an outer end of the plurality of permanent magnets. The plurality of rotor core segments and the plurality of permanent magnets are alternately arranged along the circumferential direction of the rotor.
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公开(公告)号：US20240275224A1
公开(公告)日：2024-08-15
申请号：US18221606
申请日：2023-07-13
Applicant: LG Electronics Inc.
Inventor： Younggeun MIN , Hongsik HWANG , Kyungmo YU , Jaeho KIM , Kyungho HA
IPC: H02K1/276
CPC classification number: H02K1/2773 , H02K2213/03
Abstract: A flux concentrate type rotor includes a rotor core including an inner diameter portion core, a plurality of outer diameter portion cores, and a plurality of bridges connecting the plurality of outer diameter portion cores to the inner diameter portion core, and a plurality of arc type permanent magnets each inserted between two adjacent outer diameter portion cores. Each of the plurality of bridges includes a first straight portion extending in a radial direction of the rotor core, and a first angle θ1 between a first extension line connecting a center of the arc type permanent magnet and a center of the inner diameter portion core and a second extension line connecting a center of the first straight portion of the bridge and the center of the inner diameter portion core satisfies: θ1=5.75°±4°.
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Patent Agency Ranking
公开(公告)号：US20240266894A1
公开(公告)日：2024-08-08
申请号：US18221609
申请日：2023-07-13
Applicant: LG Electronics Inc.
Inventor： Younggeun MIN , Jaeho KIM , Hongsik HWANG , Kyungho HA
IPC: H02K1/276
CPC classification number: H02K1/2773 , H02K2213/03
Abstract: A flux concentrate type motor includes a rotor core including an inner diameter portion core, a plurality of outer diameter portion cores, and a plurality of bridges connecting the plurality of outer diameter portion cores to the inner diameter portion core; and a plurality of arc type permanent magnets each inserted between two adjacent outer diameter portion cores. A first angle θ1 formed between a first extension line connecting a center of the arc type permanent magnet and a center of the inner diameter portion core and a second extension line connecting a center of an outer arc of the outer diameter portion core and the center of the inner diameter portion core may satisfy: θ1=k1×PA (kl is 0.16 to 0.55, and PA=360°/(2×P(a number of pole of the permanent magnet)), where the first angle θ1 may be between 4° and 10°.
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公开(公告)号：US20210344250A1
公开(公告)日：2021-11-04
申请号：US17142920
申请日：2021-01-06
Applicant: LG Electronics Inc.
Inventor： Jaeho KIM , Sunghyun KIM , Kyungho HA , Sunghoon KWAK
Abstract: An electric motor assembly for, for example, a hair dryer, includes an impeller, an outer housing in which the impeller is accommodated, an inner housing concentrically disposed in the outer housing, a stator having one side thereof accommodated in the inner housing, a rotor provided with a rotating shaft having one end coupled to the impeller and rotatably accommodated in the stator, a first bearing disposed at one side of the rotor, a second bearing disposed at another side of the rotor, and a bracket coupled to the stator and the outer housing so as to support the second bearing. Accordingly, initial alignment of the stator and the rotor may be securely maintained.
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公开(公告)号：US20200169134A1
公开(公告)日：2020-05-28
申请号：US16696505
申请日：2019-11-26
Applicant: LG Electronics Inc.
Inventor： Jaeho KIM , Minsoo LA , Hyuk NAM , Kyungmo YU , Sangyoung CHO , Kyungho HA , Pangeun KIM
Abstract: A motor includes a stator and a rotor. The rotor includes: a plurality of rotor core segments arranged along a circumferential direction of the rotor on the inner side or the outer side of the stator and spaced apart from one another to define a plurality of permanent magnet arrangement slots between the plurality of rotor core segments; a plurality of permanent magnets inserted into the plurality of permanent magnet arrangement slots, respectively; a first frame that couples the plurality of rotor core segments to the plurality of permanent magnets, the first frame being made of a first material; and a second frame that surrounds the plurality of rotor core segments, the plurality of permanent magnets, and the first frame and that couples the plurality of rotor core segments, the plurality of permanent magnets, and the first frame to one another. The second frame is made of a second material different from the first material.
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公开(公告)号：US20200169133A1
公开(公告)日：2020-05-28
申请号：US16696393
申请日：2019-11-26
Applicant: LG Electronics Inc.
Inventor： Jaeho KIM , Minsoo LA , Hyuk NAM , Kyungmo YU , Sangyoung CHO , Kyungho HA , Pangeun KIM
Abstract: A motor includes a stator and a rotor rotatably coupled to a rotation shaft. The rotor includes: rotor core segments arranged along a circumferential direction of the rotor on the inner side or the outer side of the stator and spaced apart from one another to define permanent magnet arrangement slots between the rotor core segments; permanent magnets inserted into the permanent magnet arrangement slots, respectively; and a rotor frame including rotor frame pins that fix each of the permanent magnets between the rotor core segments. Each of the rotor core segments defines a rotor core hole that extends parallel to an axial direction of the rotation shaft. The rotor frame comprises: a base formed to surround the plurality of rotor core segments and the plurality of permanent magnets in a direction parallel to an axial direction of the rotation shaft; and a plurality of permanent magnet fixing jig holes formed only at an inner end between the inner and outer ends of the base to expose the plurality of permanent magnets.
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公开(公告)号：US20250015652A1
公开(公告)日：2025-01-09
申请号：US18591473
申请日：2024-02-29
Applicant: LG Electronics Inc.
Inventor： Sangjoon EUM , Jeonghyun CHO , Songe PARK , Gyujong JEONG , Kyungho HA
IPC: H02K1/2791 , D06F37/30
Abstract: A magnet includes one or more polar regions each having an arc shape and arranged in a circumferential direction. A magnetic focus center of each polar region is different from a center of an inner diameter of the one or more polar regions. A value obtained by dividing (i) dm, a distance from a straight line connecting ends of a first magnetic center line of the one or more polar regions to a center of the first magnetic center line, by (ii) db, a distance from a straight line connecting ends of a second magnetic center line of the one or more polar regions to a center of the second magnetic center line, satisfies certain values based on a number of the polar regions. db is determined based on the one or more polar regions having a magnetic focus center that corresponds to the center of the inner diameter.
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