Samsung Electronics Co., Ltd.

Jeonggi Hong

Sungjong Kim

Dongik Lee

Hooijoong Kim

Wonjae Han

Jaepoong Lee

Dongwoon Lim

Jeomgap Kim

Sooyeon Jin

Sukwoo Park

A washing machine for controlling optimal operating revolutions per minute (rpm) of a drain pump in a draining course and a dehydrating course includes a washing tub; a drain pump configured to drain water in the washing tub; a pump motor configured to operate the drain pump; an inverter circuit configured to supply a driving current to the pump motor to operate the drain pump; and a controller configured to control the inverter circuit to supply reference power to the pump motor in response to starting a draining course, determine reference revolutions per minute (rpm) based on average rpm of the pump motor during a preset period of time, and control the inverter circuit to operate the pump motor at the reference rpm in response to the determining of the reference rpm.

Washing machine and controlling method for the same

A washing machine which includes a tub, a drum rotatably inside the tub, a pulsator rotatable inside the drum at a bottom of the drum, and an agitator to be connected to an upper portion of the pulsator, where the agitator includes an agitator body, a rinse case to be installed in the agitator body, and to accommodate a rinse, the rinse case being detachable from the agitator body, and a plate spaced from the rinse case along a downward direction of the rinse case, and located lower than a maximum water level of water to be supplied to the tub.

Washing machine

Growing community of inventors

Suwon-si, South Korea

Jeonggi Hong