| 摘要 |
PROBLEM TO BE SOLVED: To realize a heat pump hot water heater apparatus for obtaining a hit water heater output at high temperature (about 80 deg.C) by heat exchanging a high pressure refrigerant in a heating region discharged from a compressor and hot water supply water of a small flow rate. SOLUTION: There are provided a first heat transfer tube 5b and a second heat transfer tube 6b both for receiving heat from first and second hot water supply heat exchanger 5, and there are further provided a first flow rate adjusting valve 2a for controlling a flow rate passing through the first heat transfer tube 5b and a control device 16 for controlling the first flow rate adjusting valve 2a for supplying hot water beater water at a predetermined temperature. The control device 16 includes low/ intermediate temperature output means 240 in which valve opening of the first flow rate adjusting valve 2a is increased, and the hot water supply water received in heat with the second heat transfer tube 6b to the first heat transfer tube 5b in a large flow rate amount and outputting the hot water supply water at low/intermediate temperature, and further includes high temperature output means 29 in which the valve opening of the first flow rate adjusting valve 2a is reduced, and part of the hot water supply water received in heat with the second heat transfer tube 6b is passed in a small flow rate to the first heat transfer tube 5b to output the hot water supply water at high temperature. |
