| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a heat pump type hot water supply device capable of protecting electric components from a low temperature and preventing an increase in the number of components. <P>SOLUTION: This heat pump-type hot water supply device comprises an electric component box temperature retaining water circulation passage connected with an outflow water circulation passage of the circulation water from an outer tank toward a water heat exchanger in a heat pump unit through a switch valve and disposed in a position to transfer heat to an electric component box, an outside air temperature detecting means detecting an air temperature inside or outside the heat pump unit, and a switch valve control means circulating a part or the whole of water flowing in the outflow circulation passage to the electric component box temperature retaining water circulation passage by controlling the switch valve to retain a temperature of the electric component box when the outside air temperature detecting means detects a predetermined low outside air temperature. <P>COPYRIGHT: (C)2009,JPO&INPIT |
