Lg Electronics Inc.

Kyungho Ha

Jaeho Kim

Hyuk Nam

Sangyoung Cho

Minsoo La

Kyungmo Yu

Pangeun Kim

SungHyun Kim

Sunghoon Kwak

Younggeun Min

Jiwan Lee

A flux concentrate type rotor may include a shaft; a rotor core; and an arc type permanent magnet having an inner diameter portion and an outer diameter portion. The rotor core includes an annular ring-shaped inner diameter portion core having a shaft through hole, a plurality of outer diameter portion cores arranged along a circumferential direction of the inner diameter portion core on an outer circumferential surface of the inner diameter portion core, and spaced apart from each other to form permanent magnet insertion portion, and a plurality of bridges arranged along the circumferential direction of the inner diameter portion core to correspond to each of the outer diameter portion cores, and connect each of the outer diameter portion cores to the inner diameter portion core. The outer diameter portion core has a first cutout portion positioned at a lower end.

Flux concentrate type rotor and motor having the same

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.

Electric motor assembly and hair dryer having the same

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.

Refrigerator

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.

Motor having an impeller and a printed circuit board

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.

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.

Motor

A motor includes a stator and a rotor rotatably disposed at an inner side of the stator or an outer side of the stator. The rotor includes a rotor core block including a plurality of rotor core segments that are arranged along a circumferential direction of the rotor, where each of the rotor core segments includes a plurality of electrical steel sheets that are stacked on one another. The rotor further includes a plurality of permanent magnets disposed between the plurality of rotor core segments, where the plurality of rotor core segments and the plurality of permanent magnets are alternately arranged along the circumferential direction of the rotor. The plurality of electrical steel sheets include bridges that connect the plurality of rotor core segments to one another along the circumferential direction of the rotor.

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.

Motor having alternately arranged rotor core segments and permanent magnets

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.

Motor having rotor frame with magnet fixing jig holes

Provided is a refrigerator. The refrigerator includes a cabinet defining a storage space, a heat exchange chamber defined in a side of the cabinet to receive an evaporator, an ice making compartment defined in at least one region of the storage space to define an insulation space for making ices; and a cool air duct connecting the heat exchange chamber to the ice making compartment to provide a passage for guiding a flow of cool air. The cool air duct includes a cover part defining inner and outer appearance of the cool air duct and an insulation part formed of an insulation material, the insulation part being disposed inside the cover part.

Growing community of inventors

Seoul, South Korea

Kyungho Ha