Drying machine

A method of controlling a drying machine, comprising:

• a first load decision step for determining, based on a rate of the variation in a temperature of air discharged from a drum, whether a load of clothes accommodated in the drum is a first load size, a second load size, or a third load size, wherein the variation in temperature of air is sensed by a temperature sensor, hot air is supplied to the drum by driving of the drum, a heater, and a fan motor, the third load size is larger than the first load size and the second load size, and the second load size is larger than the first load size;
• a second load decision step for determining whether the load of clothes is the first load size or a fourth load size smaller than the first load size using a dryness sensor provided in the drum while the supply of hot air and the driving of the drum has been stopped, the second load decision step being selectively performed after the first load decision step based on the load being determined to be the first load size in the first load decision step;
• and
• a drying step for performing drying based on the determined load size in the first load decision step or the second decision step,
• wherein the first load decision step comprises determining that the load of clothes is the second load size or the third load size based on the rate of the variation in the temperature of air being less than a first threshold value,
• wherein the first load decision step comprises determining that the load of clothes is the first load size based on the rate of the variation in the temperature of air being greater than or equal to the first threshold value,
• wherein the second load decision step comprises determining that the load of clothes is the fourth load based on a frequency of the clothes contact with the dryness sensor being greater than or equal to a reference value, and
• wherein the second load decision step comprises determining that the load of clothes is the first load size based on the frequency of the clothes contact with the dryness sensor being less than the reference value.