Patent ID: 9435587
Filing Date: 2016-09-06
CPC Classification: D06F,F26B,G01K

Claim Text:
1. A dryer, comprising: a drum to accommodate a substance to be dried; a temperature sensor to detect a temperature at an entry of hot air into the drum; a heater to supply the hot air to the inside of the drum; an exhaust duct to discharge the hot air passed through the drum; a thermostat to control power applied to the heater while operating according to a temperature of the heater; and a control unit configured to detect a degree of a blockage of the exhaust duct based on the detected temperature at the entry of hot air into the drum and an operation of the thermostat, wherein the temperature sensor is a thermistor to detect the temperature of the hot air being introduced to the inside of the drum, wherein the control unit, when a rate of temperature change of the thermistor exceeds a reference rate of change at a predetermined point in time, determines the point in time as a point in time of the operation to detect the temperature of the entry of the drum and the time, and wherein the point in time of the operation comprises a first point in time of the operation when the heater is turned OFF according to the operation of the thermostat, and a second point in time of the operation when the heater is turned ON after being turned OFF according to the operation of the thermostat.