| 摘要 |
PROBLEM TO BE SOLVED: To reduce electric power cost with excess operation of a blower fan and prevent introduction of microorganism to an air conditioning system.SOLUTION: A vaporization type humidifier includes a humidification unit supplying moisture from a humidification element 21 to this, and a blower fan 30 for electric power use circulating air to the humidification element 21. When the vaporization type humidifier operates, dew point detection means 41, 42 detect an inlet side dew point of inlet side air on an upstream side with respect to the humidification unit, and an outlet side dew point on an outlet side air. After water supply operation stops, operation of the blower fan 30 stops so that dew point temperature difference between the inlet side dew point and the outlet side air falls within a temperature range of 3.8-1.0°C.SELECTED DRAWING: Figure 1 |
