Patent ID: 7975338
Filing Date: 2011-07-12
Classification: D06F

Abstract:
1. An automatic drying method for a drum type washing machine and dryer having an upper temperature sensor A 1 and a lower temperature sensor A 2 mounted at upper and lower portions of an inside of a duct that is an air circulating passage for drying laundry, respectively, for performing a drying cycle by using a difference of temperatures sensed at the upper temperature sensor A 1 and the lower temperature sensor A 2 , respectively, the method comprising: upon starting the drying cycle, determining whether a temperature at an inside of a tub is higher than a first reference set temperature T when the temperature at the inside of the tub is higher than the first reference set temperature T assuming a laundry amount that is proportional to a time period starting from when a drying operation is initiated to when a temperature difference of TA