Patent ID: 9683762
Date: 2017-06-20
CPC Classifications: C09K,F25B

Claim:
1. A heat pump apparatus comprising: a compressor that compresses a refrigerant vapor; a first heat exchanger through which a refrigerant liquid flows; an ejector that produces a merged refrigerant flow using the refrigerant vapor compressed by the compressor and the refrigerant liquid flowing from the first heat exchanger; a first extractor that receives the merged refrigerant flow from the ejector and extracts the refrigerant liquid from the merged refrigerant flow; a liquid path leading from the first extractor to the ejector via the first heat exchanger; a first pump that is provided in the liquid path and pumps the refrigerant liquid from the first extractor to the ejector; an evaporator that retains the refrigerant liquid and evaporates the refrigerant liquid so as to produce the refrigerant vapor to be compressed by the compressor; a second heat exchanger through which the refrigerant liquid retained in the evaporator or a heat medium for heating the refrigerant liquid retained in the evaporator flows; a circulation path in which the refrigerant liquid or the heat medium circulates via the second heat exchanger; and another pump that is provided in the circulation path and pumps the refrigerant liquid or the heat medium from the evaporator to the second heat exchanger.