To provide a circuit capable of using a waste heat recovering unit as an evaporator in a piping cleaning operation, though an outdoor heat exchanger and the waste heat recovering unit are arranged in parallel, in an engine drive type heat pump.
In this engine drive type heat pump 1 which has a compressor 10 by driving of an engine, and a waste heat recovering unit 15 evaporating a refrigerant by waste heat of the engine, and in which the waste heat recovering unit 15 and the outdoor heat exchanger 12 are disposed in parallel, a waste heat recovering unit connecting path 64 reaching an upstream side of the waste heat recovering unit and having a solenoid valve 33 for connecting the waste heat recovering unit, is branched from a path reaching a suction side of the compressor 10.
MASUDA TAKAHIKO
SAWADA HIROSHI
SHINOMIYA MASAFUMI
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