Drum type washing machine with laundry weight detecting means

摘要

A drum type washing machine includes a drum (10) for accommodating laundry and a variable speed electric motor (17) for rotating the drum (10). A rise time is detected when the drum (10) or the motor (17) is accelerated from a first predetermined rotational speed to a second predetermined rotational speed while a predetermined constant power is being supplied to the motor (17). A fall time is detected when the drum (10) or the motor (17) is decelerated from a third predetermined rotational speed to a fourth predetermined rotational speed while the motor (17) is in a free running state. A weight of the laundry in the drum (10) is detected on the basis of the detected rise and fall times. A balance of the laundry in the drum (10) is detected. The detected weight is compensated according to a result of balance detection. <IMAGE>