| 摘要 |
PROBLEM TO BE SOLVED: To determine presence/absence of clogging of an air supply filter.SOLUTION: A storage part 44 stores a suction static pressure initial value Pa0 corresponding to a static pressure value in a suctioned air passage 70a in a case where an air supply filter 25 is in an initial state. A filter state determination unit 45 determines a static pressure value in the suctioned air passage 70a in a case where a humidity conditioner operates, as a suction static pressure estimation value Pa3, and on the basis of the suction static pressure initial value Pa0 under an air density condition that an air density value in the suctioned air passage 70a is a predetermined value and the suction static pressure estimation value Pa3 under the air density condition, determines presence/absence of clogging of the air supply filter 25.SELECTED DRAWING: Figure 2 |
