| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump system keeping the discharged coolant temperature from a compressor 1 high even in a temperature holding operation after achievement of a set temperature, for giving a sense of comfortable heating. <P>SOLUTION: This heat pump system is provided with a hot gas bypass passage AC bypassing a part of a coolant discharged from the compressor 1 and a control valve 7 controlling flow through the hot gas bypass passage AC. A control means 40 closes the control valve 7 when heating by a condenser 3 is a high load and opens the control valve 7 when the heating by the condenser 3 is a low load. In this way, the discharged coolant temperature can be kept high even during a temperature holding operation after achievement of the set temperature, and a sense of comfortable heating can be obtained. <P>COPYRIGHT: (C)2004,JPO |
