Patent ID: 7621013

Claim:
A method of washing laundry in a drum washing machine including a tub to hold water, a drum rotatably placed inside the tub, a steam generator to generate steam, and a circulation pump to draw the water inside the tub and supply the drawn water to the tub, the method comprising steps of: supplying water to the tub up to a first preset water level; washing laundry in the drum by rotating the drum forward and backward while drawing the water inside the tub and supplying the drawn water to the tub; and injecting steam into the tub and drawing the water inside the tub and supplying the drawn water to the tub, while rotating the drum forward and backward, wherein the injecting of steam includes: rotating the drum forward and backward at a preset rate and drawing the water inside the tub and supplying the drawn water to the tub, while generating steam and injecting the generated steam into the tub for a first preset time; and stopping steam generation after the first preset time, rotating the drum forward and backward at the preset rate for a second preset time, and re-drawing the water inside the tub and re-supplying the re-drawn water to the tub.