JPS6437997A - Control apparatus of washing machine - Google Patents

Abstract

PURPOSE: To prevent the damage to fabric even in the case of setting a low water level and to prevent useless water supply due to erroneous detection by making a controller for driving a motor stop the drive of the motor during an agitation process and driving a water supply valve when the water level of a washing tank becomes lower than a set water level. CONSTITUTION: A microcomputer 10 performs setting display at a display device 12, corresponding to input from a key switch 11 and sends signals to a water supply valve driving device 15 or a motor driving device 16 or a water discharge valve driving device 17, corresponding to signals from a lid switch 13 and a water level sensor 9. By the constitution, in the case of setting the water level inside the washing tank 1 extremely low, even when water leakage is generated by a water discharge valve 8 or the like, since the water level is detected when an agitation blade 3 during agitation is stopped, a hysterisis width is narrowed and detection accuracy is improved. Thus, since it is immediately detected that the water level becomes lower than a set value, water is supplied and the water level is water supply-controlled to a set level, the damage to clothes is prevented. Also, since detection is not performed at the time of the operation of the agitation blade 3, water supply by the erroneous detection is not performed.