Patent ID: 7596961

Claim:
A dehumidification unit comprising alternate laminations of an adsorption element which supports an adsorbent and in which a plurality of first air ventilation passages through which air to be processed flows are formed planewise in rows, and a cooling element comprising a plurality of bended second air ventilation passage forming member in which a plurality of second air ventilation passages through which cooling air flows are formed planewise in rows, wherein: said cooling element is provided, at a planewise inner area thereof, with an opening, thereby being shaped like a frame, and wherein a plurality of said second air ventilation passages is separated by said opening into an entry opening and an exit opening situated respectively on one passagewise side of the plurality of bended second air ventilation passage forming member and on an opposite passagewise side of the bended second air ventilation passage forming member thereof, wherein passage lengths of the entry opening and the exit opening do not extend the full length of the cooling element such that the cooling air flowing in the opening is brought into direct contact with the adsorption element.