Drum-type washing machine

Abstract

The water circulation system of a drum-type washing machine uses one motor to drive both the circulation and drain pumps. The drum-type washing machine includes a motor having a shaft, the motor enabling forward and reverse rotation of the shaft; a circulation pump, installed on the shaft of the motor, for circulating water by a rotational operation of the motor, the circulating pump moving a first fluid from a water circulation inlet to a water circulation outlet by a centrifugal force; and a drain pump, installed on the shaft of the motor, for draining water by a rotational operation of the motor, the drain pump moving a second fluid from a drain inlet to a drain outlet by a frictional force.

Dependencies are inferred from the claim text.