The present invention relates to a temperature control device for food dryer overheating prevention. According to a method of the present invention for power supply to a heat-generating hot wire portion (120), an interval of the power supply to the hot wire portion (120) is adjusted in accordance with a set temperature input in an input unit (160). For example, in case that the set temperature is 50 degrees Celsius, the pulse-type power supply to the hot wire portion (120) is performed for one second and halted for three seconds. Then, the temperature is maintained at 50 degrees Celsius without exceeding 50 degrees Celsius. In case that the set temperature is 70 degrees Celsius, the pulse-type power supply is performed for one second and halted for one second. Then, the temperature does not exceed 75 degrees Celsius. A predetermined temperature is not exceeded when the pulse-type power supply to the hot wire portion (120) is performed as described above since a predetermined temperature is maintained and the predetermined temperature is not exceeded once the amount of heat generated by the hot wire portion (120) and the amount of heat cooling based on an operation of fan unit (130) become equal to each other. This is the most important part of the present invention. In other words, the pulse-type power supply to the hot wire portion (120) and the adjustment to correspond to the set temperature are performed for the temperature not to exceed a predetermined temperature and overheating not to occur. In addition, a change in temperature is minimized by the amount of the generated heat and the amount of the heat cooling being caused to become equal to each other.COPYRIGHT KIPO 2016본 발명은 식품 건조기에서 과열 방지를 위한 온도 조절 장치에 관한 발명으로서 열이 발생하는 열선부(120)에 전원을 공급하는 방법을 입력부(160)에 입력된 설정 온도에 따라 열선부(120)의 전원 공급 주기를 조정한다. 예를 들면 설정 온도가 50℃인 경우에는 열선부(120)에 전원 공급 방식을 1초간 전원 공급을 하고 3초 전원 공급을 중단하는 식으로 펄스 방식으로 전원 공급을 하면 온도가 50℃를 넘지 않고 50℃를 유지하게 되고 설정 온도가 75℃인 경우에는 1초간 전원 공급을 하고 1초간 전원 공급을 중단하는
