Patent ID: 7895856

Claim:
A humidity controller comprising: a heat transfer circuit ( 50 ) to which first and second adsorption heat exchangers ( 51 , 52 ) each carrying an adsorbent are connected and through which a heat transfer fluid flows; and a casing ( 11 ) which is formed in a hollow rectangular parallelepiped shape for accommodating the first and second adsorption heat exchangers ( 51 , 52 ), wherein an operation in which one of the first and second adsorption heat exchangers ( 51 , 52 ) is cooled and the other is heated, and an operation in which the one of the first and second adsorption heat exchangers ( 51 , 52 ) is heated and the other is cooled are alternately performed, and one of an air current which has passed through the first adsorption heat exchanger ( 51 ) and an air current which has passed through the second adsorption heat exchanger ( 52 ) is supplied to a room, and the other air current is exhausted to the outside, and wherein in the casing ( 11 ), a first main air passage ( 37 ) in which the first adsorption heat exchanger ( 51 ) is located and a second main air passage ( 38 ) in which the second adsorption heat exchanger ( 52 ) is located are arranged next to each other along long dimensions of a front surface portion ( 12 ) and a rear surface portion ( 13 ) of the casing ( 11 ), the front surface portion ( 12 ) and the rear surface portion ( 13 ) facing each other, first and second intake side passages ( 32 , 34 ) are provided in a space between the first and second main air passages ( 37 , 38 ) and the rear surface portion ( 13 ), and are arranged next to each other along a short dimension of the rear surface portion ( 13 ), supply side spaces ( 31 , 36 ) in which a supply fan ( 26 ) is located and exhaust side spaces ( 33 , 35 ) in which an exhaust fan ( 25 ) is located are provided in a space between the first and second main air passages ( 37 , 38 ) and the front surface portion ( 12 ), one of a pair of side plate portions ( 14 , 15 ) of the casing ( 11 ) which are orthogonal to the front surface portion ( 12 ) is provided with a supply opening ( 22 ) that communicates with the supply side spaces ( 31 , 36 ), and the other of the pair of side plate portions ( 14 , 15 ) of the casing ( 11 ) is provided with an exhaust opening ( 21 ) that communicates with the exhaust side spaces ( 33 , 35 ), the supply fan ( 26 ) is located such that the supply fan ( 26 ) draws air from the rear surface portion ( 13 ) side and expels the air to the supply opening ( 22 ), and the exhaust fan ( 25 ) is located such that the exhaust fan ( 25 ) draws air from the rear surface portion ( 13 ) side and expels the air to the exhaust opening ( 21 ), and the rear surface portion ( 13 ) is provided with a first intake opening ( 24 ) that communicates with the first intake side passage ( 34 ) and a second intake opening ( 23 ) that communicates with the second intake side passage ( 32 ).