DISHWASHER HAVING A VARIABLE SPEED CIRCULATION PUMP CONTROLLED RESPONSIVE TO SENSED TURBIDITY

摘要

A dishwasher includes an enclosure within which dishes are washed with a wash liquid. A pump moves the wash liquid to wash the dishes within the enclosure. The pump has a plurality of operational states. A sensor senses turbidity within the wash liquid. The dishwasher includes means to control the operational state of the pump in response to the sensed turbidity.