| 摘要 |
<P>PROBLEM TO BE SOLVED: To suppress a deterioration of heating performance due to a rise of temperature of the water to be supplied to a heating high-pressure side heat exchanger in a heat pump type hot water supply device. <P>SOLUTION: This heat pump type hot water supply device is provided with a hot water reservoir tank, a heat pump heat source machine having the high- pressure side heat exchanger for heating the water stored in the hot water reservoir tank, and a circulation pump for circulating the water in the bottom part inside of the hot water reservoir tank to an upper part inside of the hot water reservoir tank after passing the water through the high-pressure side heat exchanger. When operating the heat pump heat source machine and the circulation pump to boil the water inside of the hot water reservoir tank, before boiling the water inside of the hot water reservoir tank, operation of the heat pump heat source machine is stopped, and after stopping the operation of the heat pump heat source machine, the water in the bottom part inside of the hot water reservoir tank, which is not heated yet, is moved to an upper part inside of the hot water reservoir tank by the operation of the circulation pump. <P>COPYRIGHT: (C)2003,JPO |
