Washing machine improving washing efficiency

摘要

Disclosed herein is a washing machine that is capable of preventing the deformation of laundry due to spin-drying holes, increasing friction between the inner surface of a washing tub and laundry to improve the washing efficiency, and reducing wash water consumption. The washing machine includes a water tub (11), a washing tub (20) mounted in the water tub, a drive unit (20) to rotate the washing tub, and a wash water circulation unit (40) to supply wash water in the water tub into the washing tub. The washing tub has a plurality of depressions (50) formed therein and depressed outward from the inner surface thereof in the shape of a polygonal pyramid, and a plurality of spin-drying holes (60) formed in a deep area of the respective depressions.