Patent ID: 9091014
Filing Date: 2015-07-28
Classification: D06F,Y02B

Abstract:
1. A clothing dryer comprising: a drum to receive clothing; a first hot air heater and a second hot air heater to supply hot air into the drum, the second hot air heater having a relatively smaller heater capacity compared to the first hot air heater; a humidity sensor to sense internal humidity of the drum; and a controller to calculate a humidity change amount in the drum, to compare the calculated humidity change amount with a predetermined change amount, and to control the second hot air heater to be operated and the first hot air heater not to be operated so as to adjust a heater capacity in a part of a drying period when the humidity change amount is greater than the predetermined change amount; a temperature sensor to sense exhaust temperature at an outlet of the drum, wherein the controller controls the first and second hot air heaters to be selectively operated based on the exhaust temperature when the humidity change amount is not greater than the predetermined change amount.