DEVICE AND METHOD FOR SENSING DRYNESS OF DEHUMIDIFIER TYPE DRYING MACHINE

PURPOSE: A dryness sensing device of a dehumidifier type drying machine and a method thereof are provided to finish the drying of clothing at a proper time according to the change of atmospheric temperature around the drying machine, thereby improving the drying efficiency and performance while reducing the energy consumption. CONSTITUTION: A dryness sensing device of a dehumidifier type drying machine includes a first temperature sensing element(80) positioned around a discharge hole of a drum(60) for sensing air temperature before heat exchange, a second temperature sensing element(85) mounted on a circulation duct(70) behind a heat exchange element for sensing air temperature before heating, a third temperature sensing element(88) mounted either inside or outside a case(50) for sensing the atmospheric temperature, and a control element(90) for determining the dryness of clothing according to outputs of the first to third temperature sensing elements.