Abstract: The problem of internal fouling of washing machine has been concerned by the majority of users, but the current treatment methods of fouling are not satisfactory. This paper analyzes the formation mechanism of fouling in washing machines and compares the existing methods of washing machines to treat fouling. It is proposed that tap water should be sprayed into the interlayer of the washing barrel at a specific time during the last dehydration process of the washing machine to wash and remove the rinsing water attached to the barrel wall. By removing the source of pollution, the fouling of the machine is prevented, and the laundry barrel is kept clean. It provides a new way to solve the scaling problem of automatic washing machine.

Key words: Washing machine, Scale prevention