To save energy without uselessly performing a forward and reverse arc rotary drive mode by using a forward and reverse continuous rotary drive mode together while achieving a loosening effect by the forward and reverse arc rotary drive mode and effectively accelerating drying by that.
Regarding drive in a drying step of a rotary drum 4 whose rotary axis direction is made horizontal or inclined downwards from the horizontal direction from the open front surface side to the back surface side to be a bottom part, the forward and reverse arc rotary drive mode of alternately repeating rapid forward arc rotation and rapid reverse arc rotation over 90 degrees and less than 200 degrees and the forward and reverse continuous rotary drum mode of alternately repeating the forward and reverse continuous rotation of the rotary drum 4 at such a rotation speed that laundry 21 lifted by the rotation of the rotary drum 4 shows the action of falling from the height at which its gravity is superior are alternately performed, and the performance ratio of the forward and reverse arc rotary drive mode to the forward and reverse continuous rotary drive mode is lowered in the second half rather than the first half.
MATSUMURA AKIKO
INOUE HIROYUKI
