| 摘要 |
<p>The present invention relates to a desiccant cooling and heating device using a water-air type heat pump unit. A compressor, a first heat exchanger, an expansion valve, and a second heat exchanger are connected through a refrigerant circulation line to be one cycle. 4-way valves are arranged in front of and behind the compressor to convert the flow of a refrigerant to the first heat exchanger or the second heat exchanger. Also, a third heat exchanger is installed in a first branch line branched from the refrigerant circulation line in front of and behind the first heat exchanger to be connected to the first heat exchanger in parallel. The present invention can supply the best heat source which each operation mode requires by utilizing the two heat exchangers arranged in parallel as two condensers in a heating mode and a defrost mode and by utilizing the two heat exchangers as two evaporators in a heat storage mode and a cooling mode. Also, the present invention can be used as an effective dehumidifier by utilizing one among the two heat exchangers installed close to each other as an evaporator and the other one as a condenser.</p> |
