| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump configured to prevent reduction in pump efficiency even when an auxiliary heat exchanger is used to adjust the thermal balance of a refrigerant circuit. <P>SOLUTION: The refrigerant circuit (10) is provided with an auxiliary heat exchanger (1) which exchanges heat between outside air and the refrigerant in the refrigerant circuit (10). This auxiliary heat exchanger (1) is connected so as to connect a connecting passage (4) between a low-stage compressor (11) and a high-stage compressor (12), and a connecting passage (7) between a low-stage expansion valve (15) and a high-stage expansion valve (14). <P>COPYRIGHT: (C)2013,JPO&INPIT |
