| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the evaporation capacity of a heat source side heat exchanger in a refrigeration device including the heat source side heat exchanger and a use side heat exchanger. <P>SOLUTION: An air conditioner (10) being a refrigeration device includes a degree-of-superheat controller (71) for controlling the opening degree of an expansion valve (33) in such a way that a merged refrigerant having passed through a main heat exchange unit (50) and an auxiliary heat exchange unit (55) reaches a predetermined degree of superheat during the evaporation operation of an outdoor heat exchanger (40). The air conditioner (10) also includes: a flow rate adjustment valve (66) for adjusting the flow rate ratio of a refrigerant that flows to the main heat exchange unit (50) and refrigerant that flows to the auxiliary heat exchange unit (55) during the evaporation operation of the outdoor heat exchanger (40); and a flow rate ratio controller (72) for controlling the flow rate adjustment valve (66) in such a way that the temperatures of a refrigerant that has passed through the main heat exchange unit (50) and a refrigerant that has passed through the auxiliary heat exchange unit (55) are substantially the same. <P>COPYRIGHT: (C)2013,JPO&INPIT |
