To improve energy saving in a dehumidifier to control harmful influences due to selectively separated moisture by dehumidification.
The dehumidifier uses a separation medium 10 provided with a separation film adsorbing moisture included in a gas in a system and capable of selectively separating the moisture, and a circulating type aspirator pump 20 capable of sucking the separated moisture. The separation medium 10 applies matter storing the separation film 11 coating a zeolite film 11b on the outer peripheral face of a hollow pipe-like porous supporter 11a in a separation medium container 12. The aspirator pump 20 has a pump 22 for circulating circulation water in a circulation pipe passage 21, a storage tank 23 for storing the circulation water, a pressure decrease part 24 for generating negative pressure due to pressure decrease effect to the outer peripheral side of at least a part of the circulation pipe passage 21, and a suction part 25 connected to the pressure decrease part 24 and sucking the gas, the moisture or the like.
INOUE SOSHI
IZUMI KO
Uzawa Hidehisa
Tsuyoshi Hashimoto
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