| 摘要 |
<P>PROBLEM TO BE SOLVED: To improve the efficiency of operation, while reducing the cost of a heat pump device to the minimum. <P>SOLUTION: The heat pump device 1 includes a refrigerant circuit 2 wherein the circuit is formed annularly so that a compressor 3; a heat exchanger 4; an expansion valve 5a, and a heat exchanger 6a are connected in this order by piping, from a point between the heat exchanger 4 and the expansion valve 5a to a point between the heat exchanger 6a and the compressor 3, and the expansion valve 5b and the heat exchanger 6b are provided on the way; and then a refrigerant circulates therein. The heat pump device 1 also controls flow rates of the refrigerant to be flowed into the heat exchangers 6a and 6b according to a temperature difference between outside air heat-exchanged in heat exchangers 6a, and an antifreeze liquid heat-exchanged with the refrigerant in the heat exchanger 6b. <P>COPYRIGHT: (C)2013,JPO&INPIT |
