DRUM-TYPE WASHING MACHINE (VERSIONS) AND METHOD FOR CONTROLLING THE SAME Russian patent published in 2004 - IPC

FIELD: mechanical engineering. SUBSTANCE: washing machine has rotating tank, immovable tank and air circulation devices for circulation of air heated by drying heater in order to absorb moisture of clothes and carry out clothes drying procedure by discharging of damp air to the outside. When number or total time for performing of drying operations exceeds predetermined control value, washing machine provides for automatic removal of dried contaminants from tank inner surface. Such construction allows amount of dried contaminants deposited on tank inner surface to be forecast on the basis of number or total drying operation time represented on display. Also, user may decide whether or not forced contaminant removal operation is actually necessary. EFFECT: increased efficiency and enhanced reliability in operation. 12 cl, 5 dwg