Heat pump type hot water supply device

摘要

A heat pump type hot water supplying apparatus includes a hot water reservoir tank ( 3 ) and a circulating path ( 12 ) for connecting a water intake port ( 10 ) formed at the bottom of the hot water reservoir tank ( 3 ) and a hot water inlet ( 11 ) formed at the upper portion of the hot water reservoir tank ( 3 ) to each other. A water circulating pump ( 13 ) and a heat exchanging path ( 14 ) are disposed on the circulating path ( 12 ). A boiling operation is performed for heating the heat exchanging path ( 14 ) by a heat pump type heating source, boiling water which has not been heated yet from the water intake port ( 10 ) and returning the heated water to the hot water inlet ( 11 ). A bypassing path ( 17 ) branched from the hot water inlet ( 11 ) and connected to the bottom of the hot water reservoir tank ( 3 ) is disposed on the circulating path ( 12 ). A freeze-proof operation by circulation is performed such that the water circulating pump ( 13 ) is driven and the water reserved in the hot water reservoir tank ( 3 ) is returned to the hot water reservoir tank ( 3 ) via the bypassing path ( 17 ).