| 摘要 |
PROBLEM TO BE SOLVED: To provide a heat-pump type water heater simplified in structure and reduced in energy loss for supplying a heat medium to heating terminals. SOLUTION: The water heater comprises a hot water circulating means 3 for circulating hot water in such a way to take it out of the bottom of a hot-water storage tank 1, pass it through a hot-water supplying heat exchanger 2 and supply it to the upper portion of the hot-water storage tank 1, and a heat medium circulating means for circulating the heat medium between a heating heat exchanger 4 and heating terminals. In a compression coolant channel 'T', the heating heat exchanger 4 and the hot-water supplying heat exchanger 2 function as condensers, and an air heat exchanger 6 functions as an evaporator. An operation controller 'H' performs heating by operating a heat medium circulating means 5 and the coolant channel 'T' to transfer heat from a coolant in the coolant channel 'T' to the heat medium and supplying the heated heat medium terminals 'D'. |
