Patent ID: 7992320
Filing Date: 2011-08-09
Classification: D06F

Abstract:
1. A clogging detecting method for a dryer, comprising: detecting on/off states of a temperature control member that is turned on or turned off according to a temperature of air in an air passage using a controller, wherein the air passage is provided in the dryer to circulate heated air therein; calculating an average on time and an average off time of the temperature control member using the controller; comparing a sum of the calculated average on time and average off time with an operation reference value; selecting one of a plurality of predetermined clogging reference times which are different from each other, based on a comparison between the sum of the average on time and off time and the operation reference value; determining, at the controller, whether the air passage is clogged by comparing the calculated average off time with the selected clogging reference time; and if the air passage is determined to be clogged, displaying information indicative of the clogging of the air duct using a display device of the dryer.