| 摘要 |
PROBLEM TO BE SOLVED: To provide a cooler for a thermo-hygrostat having a defrosting function so as not to frost in the case of setting the cabinet to a low temperature and controlling to humidify it. SOLUTION: In the thermo-hygrostat 1 having a constant temperature and humidity cabinet 21, heater 22, cooler 10, humidifying heater 25 and temperature and humidity control function 29 to hold temperature and humidity constantly set in the cabinet 21, a defrosting heater 11 is mounted at the cooler 10, and continuously energized in the case of controlling to humidify the thermostat 1 at predetermined temperature or lower. |
