Hot water supply apparatus associated with heat pump

摘要

A hot water supply apparatus associated with a heat pump is provided. In the hot water supply apparatus, refrigerant flowing through an evaporator and a compressor of a refrigerant cycle may perform a heat-exchange operation with water so that, a hot water supply operation may be substantially continuously performed without performing a defrosting operation.

主权项

1. A hot water supply apparatus provided with a heat pump so as to perform a hot water supply operation, comprising:
a main refrigerant circuit including a compressor to compress refrigerant, an expander, and a first water-refrigerant heat exchanger in which heat is exchanged between the refrigerant and water supplied from a water supply source; a heating part including an air-conditioning heat exchanger through which water circulates; a hot water supply part including a hot water supply tank to store water supplied from the water supply source and a hot water supply heat exchanger in which heat is exchanged between the water in the hot water supply tank and the water circulated in the heating part; a second water-refrigerant heat exchanger in which heat is exchanged between the refrigerant and the water circulated in the heating part; a first three-way valve to switch a flow direction of the circulation water passing through the second water-refrigerant heat exchanger to the hot water supply heat exchanger or the heating part; a water supply passage to receive water from the water supply source; a hot water supply side passage to connect the water supply passage to the hot water supply part to supply water from the water supply source to the hot water supply part; a circulation passage in which water to be heat-exchanged with the refrigerant in the first water-refrigerant heat exchanger circulates; a circulation side supply passage to connect to the water supply passage and to extend to the circulation passage so as to supply the water in the water supply passage to the circulation passage; a second three-way valve installed on the circulation side supply passage to selectively prevent a water supply through the circulation side supply passage; a four way valve to switch a flow direction of a refrigerant discharged from the compressor to one of the first and the second water-refrigerant heat exchanger; a first conduit to connect the first water-refrigerant heat exchanger with the four way valve; and a second conduit to connect the second water-refrigerant heat exchanger with the four way valve.