Samsung Electronics Co., Ltd.

Dongbum Lee

Jonghyun Choi

Eungryeol Seo

Byoungsoo Ko

Kyoungwoong Noh

Incheol Hwang

Cheo Park

Yeonje Kim

Jungwoo Park

A washing machine includes a main body, a tub inside the main body, a drum configured to be rotated inside the tub, and a drive device configured to rotationally drive the drum. The drive device includes a drum shaft connected to the drum, a motor including a stator and a rotor configured to be rotated by an interaction with the stator, a sun gear connected to the rotor, a carrier connected to the drum shaft, a planetary gear configured to transmit a rotational force of the sun gear to the carrier, and a cooling flow path formed therein and through which air is introduced and discharged to cool the planetary gear. The cooling flow path includes a first cooling hole formed in the sun gear to allow outside air to be introduced, and a second cooling hole formed in the rotor to allow inside air to be discharged.

Washing machine

A motor having a compact volume by reducing sizes in axial and radial directions includes a stator, and a rotor arranged outside the stator and rotated by electromagnetically interacting with the stator, wherein the rotor includes a ring-shaped back yoke, a plurality of magnets separately arranged inside of the back yoke along a circumferential direction of the back yoke, and a frame arranged to combine the back yoke and the plurality of magnets, and having an open side through which an outer surface of the back yoke is exposed to an outside of the frame.

Motor

A BLDC motor server includes a stator configured in a hollow cylindrical shape and comprising a plurality of teeth around which a plurality of coils is wound to form an electromagnetic field, respectively; and a rotor configured in a cylindrical shape rotatable within the stator and comprising a plurality of permanent magnets, each having an arched section in which an outer circumference side is extended in both directions from a rotation center side, wherein the plurality of permanent magnets is disposed, so that facing outer surface portions of two permanent magnets neighboring each other are adjacent to each other, and wherein a width Wo of the outer circumference side of each permanent magnet is configured to be smaller than a width Wc of the rotation center side thereof. The BLDC motor may reduce a noise and a vibration as well as increasing an efficiency of the motor.

IPM BLDC motor

A clothes dryer with improved heat dissipation efficiency of electronic components. The clothes dryer includes a cabinet having a clothes inlet, a drum rotatably provided in the cabinet, a drying fan configured to circulate air for drying supplied to the drum, and a heat dissipation duct. Wherein the heat dissipation plate includes a lower case fixed to the cabinet and provided with an airflow guide portion protruding toward the printed circuit board and an upper case coupled to an upper portion of the lower case and to which a printed circuit board on which a plurality of electronic components is mounted is fixed.

Growing community of inventors

Suwon-si, South Korea

Dongbum Lee