Patent ID: 9416990
Filing Date: 2016-08-16
CPC Classification: F24D,F24H,Y02B

Claim Text:
1. A hot water supply apparatus associated with a heat pump, comprising: a first refrigerant circuit that circulates a first refrigerant, the first refrigerant circuit comprising a first compressor that compresses the first refrigerant, a hot water supply heat exchanger that generates hot water for a hot water supply operation using the first refrigerant and an outdoor heat exchanger that performs heat exchange between the first refrigerant and outdoor air; a second refrigerant circuit that circulates a second refrigerant, the second refrigerant circuit comprising a second compressor that compresses the second refrigerant and an indoor heat exchanger that performs at least one of a heating operation or a cooling operation using the second refrigerant; and a cascade heat exchanger operably coupled to each of the first and second refrigerant circuits so as to perform heat exchange between the first and second refrigerants, and wherein, in the heating operation, the hot water supply heat exchanger is a primary condenser that performs primary condensing of the first refrigerant received from the first compressor, and the cascade heat exchanger is a secondary condenser that performs secondary condensing of the first refrigerant received from the hot water supply heat exchanger, and the outdoor heat exchanger is an evaporator that performs evaporating of the first refrigerant, and wherein the first refrigerant circuit includes: