Samsung Electronics Co., Ltd.

Wonjae Han

Jeonghoon Kang

Hooijoong Kim

Doyeon Kim

Sungjong Kim

Jaepoong Lee

Jeonggi Hong

Hansol Youn

Sukwoo Park

Sooyeon Jin

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 includes a cabinet, a tub disposed inside the cabinet, and a rotating tub rotatably disposed inside the tub. A suspension device connects the tub to the cabinet such that the tub is supported by the cabinet, and a vibration reduction apparatus is coupled between the tub and the suspension device to reduce vibration of the tub according to rotation of the rotating tub. The vibration reduction apparatus includes a first rod and a second rod rotatably coupled to the first rod.

Washing machine and vibration reduction apparatus thereof

Growing community of inventors

Suwon-si, South Korea

Wonjae Han