Patent ID: 9328442
Filing Date: 2016-05-03
CPC Classification: D06F

Claim Text:
1. A washing machine comprising: a cabinet forming an external appearance of the washing machine; a rotary tub disposed to rotate around a driving shaft vertically provided inside the cabinet, the rotary tub and comprising a sidewall which extends with an outward inclination from a lower side to an upper side of the washing machine whereby water in the rotary tub moves to the upper side of the rotary tub along the inner surface of the outwardly inclined sidewall during rotation of the rotary tub, and at least one protrusion part which protrudes outwardly from the sidewall and extends with an outward inclination from an upper side to a lower side of the sidewall whereby water in the protrusion part moves to the lower side of the rotary tub along the inner surface of the outwardly inclined protrusion part during rotation of the rotary tub; a driving apparatus disposed at a lower side of the rotary tub to rotate the rotary tub; a balance ring installed at an upper side of the rotary tub to store washing water, the balance ring being configured to discharge the stored washing water from the rotary tub to outside the rotary tub during a spin-drying operation; a guide water filter mounted on the at least one protrusion part inside the rotary tub and provided at a rear surface thereof with a drain passage to discharge the washing water discharged from the balance ring to outside; a base installed at the lower side of the rotary tub and comprising a guide part connected to the drain passage formed on the guide water filter; and a support plate installed at the lower side of the rotary tub to support the rotary tub, to store the washing water discharged through the guide part, and to discharge the stored washing water to outside.