Patent ID: 7410533

Claim:
A humidity controller apparatus for removing moisture from or adding moisture to process subject air alternately using a first adsorption element ( 81 ) and a second adsorption element ( 82 ) by distributing first and second process subject air in a hollow casing ( 10 ) with first and second fans ( 95 , 96 ) and switching distribution routes for the process subject air in the casing ( 10 ), wherein: the casing ( 10 ) has a flat rectangular shape and has first and second inlet openings ( 13 , 15 ) and first and second outlet openings ( 14 , 16 ); a suction-side wall ( 12 ), which is one of side walls of the casing ( 10 ), has the first and second inlet openings ( 13 , 15 ) which are provided side by side in a longitudinal direction of the suction-side wall ( 12 ); the casing ( 10 ) has a filter room ( 44 ) extending along the suction-side wall ( 12 ), the filter room ( 44 ) being in communication with the first and second inlet openings ( 13 , 15 ); and the filter room ( 44 ) contains an air filter ( 71 , 76 , 77 ) for filtering process subject air introduced through the inlet openings ( 13 , 15 ).