Hot water supply apparatus associated with heat pump

摘要

A hot water supply apparatus associated with a heat pump is provided. The hot water supply apparatus may employ a cascade heat pump including a two-stage cycle to perform a hot water supply operation. Refrigerants flowing through a heat side heat exchanger and a usage side heat exchanger may be heat-exchanged with water. Thus, the hot water supply operation may be continuously performed, without a defrosting operation, and hot water supply performance and heating performance may be improved.

主权项

1. A hot water supply apparatus associated with a heat pump that performs a hot water supply operation, comprising:
a cascade heat pump, including: a first refrigerant circuit including a heat source side heat exchanger in which a first refrigerant absorbs or emits heat, the first refrigerant circuit including a first compressor; a second refrigerant circuit connected to the first refrigerant circuit and in which a second refrigerant absorbs or emits heat so as to form a two-stage refrigerant cycle, the second refrigerant circuit including a second compressor; a hot water supply device coupled to the cascade heat pump so as to perform the hot water supply operation; and a desuperheater heat exchanger simultaneously connected to the hot water supply device and to at least one of the first refrigerant circuit or the second refrigerant circuit so as to perform the hot water supply operation using a high temperature refrigerant received from a compressor of the at least one of the first refrigerant circuit or the second refrigerant-circuit, wherein refrigerant flowing through the heat source side heat exchanger and the desuperheater heat exchanger are heat-exchanged with water so as to continuously perform the hot water supply operation without a defrosting operation.