Determining water demand in program-controlled washing machine - by initially letting in water until specified upper limit has been reached

摘要

A process for determining water demand in a program-controlled washing machine, which features a water supply system regulated according to the water level, involves letting in washing or rinsing water until a specified upper limit has been reached in the laundry drum. This triggers off the reversing process for the drum. A tacho generator is used to register the oscillating movements of the drum executed until the lower level has been reached. Out of this number of movements, the process involves extracting switch impulses for the appropriate additional opening of the water supply. ADVANTAGE - The process provides for a reliable determining of the required final volume of water while taking into account the absorbancy of the washing.