| 摘要 |
PROBLEM TO BE SOLVED: To avoid a problem of noise occurring when changing a circulating direction of refrigerant. SOLUTION: In a refrigerant circuit 60, a compressor 63, a four way selector valve 64, a first adsorption heat exchanger 61, an expansion valve 65, and a second adsorption heat exchanger 62 are connected, it is composed such that refrigerant circulation can be reversed, and it carries out a vapor compression type refrigerating cycle. An adsorbent carrying out adsorption and desorption of moisture is carried on surfaces of the first adsorption heat exchanger 61 and the second adsorption heat exchanger 62. To alternately carry out adsorption and desorption of moisture in the first adsorption heat exchanger 61 and the second adsorption heat exchanger 62, a selector mechanism 64 is changed to change a circulating direction of the refrigerant of the refrigerant circuit 60. Moreover, before changing the refrigerant circulation, the compressor 63 is stopped for reducing a differential pressure between a high pressure side and a low pressure side of the refrigerant circuit 60. COPYRIGHT: (C)2006,JPO&NCIPI |
