| 摘要 |
PROBLEM TO BE SOLVED: To prevent the humidity of chamber air from rising by setting a recooling coil inside a drain pan when the rise is due to reevaporation of the drain produced by an evaporator and heated by a reheating heater during dehumidification operation. SOLUTION: Inside a drain pan 11 a recooling coil 12 is set and connected in parallel with an evaporator 4 in the refrigerant circuit. During dehumidification operation, when the power supply to a reheating heater 10 is turned on, the chamber air is dehumidified by being cooled by an evaporator 4 and, after a fall of the absolute humidity, heated to a set temperature by the reheating heater 10 simultaneously with fall of the relative humidity. Meanwhile, the drain produced by the evaporator 4 undergoes reevaporation by being heated by the reheating heater 10 as the drain falls in drops but, by being cooled again by the recooling coil 12, the vapor condenses to water and falls into the drain pan 11 in drops. This method enables preventing rise of chamber air humidity caused by reevaporation of the drain. |
