Patent ID: 7617704
Filing Date: 2009-11-17
Classification: D06F,Y02B

Abstract:
1. A washing machine comprising: a rotatable washing tank having no hole in a tank wall and formed in a diameter of an inner wall face becoming gradually greater toward an opening portion; a water supply unit containing an ion elution unit generating water containing metal ions and supplying said water containing metal ions into said washing tank; and a controller that rotates said washing tank at a first speed while maintaining the water containing metal ions supplied by said water supply unit in the washing tank to sterilize the inner wall face of said washing tank by allowing the water to flow along and up to an uppermost portion of the inner wall face of said washing tank by a centrifugal force derived from a rotation of said washing tank, and thereafter rotates said washing tank at a second speed, higher than the first speed, to discharge the water from said washing tank.