| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an economical apparatus suitable for housing conditions in Japan, capable of bath reheating by efficiently using hot water in a plurality of hot water storage tanks connected in series. <P>SOLUTION: The apparatus comprises: a hot water heat exchanger 25 which heats bathtub water using hot water in an outgoing hot water storage tank 6 positioned on the furthermost downstream side of a plurality of hot water storage tanks storing hot water heated by a heating means 8 and connected in series; a bath circulation pump 23 for circulating bathtub water to the hot water heat exchanger 25; and an incoming hot water storage tank 2 connected to a water supply pipe 3 on the furthermost upstream side of a plurality of hot water storage tanks. Hot water heat-exchanged by the hot water heat exchanger 25 is led to the incoming hot water storage tank 2 so as to reliably supply high-temperature hot water to the outgoing hot water storage tank 6, thereby improving the usability of the hot water storage type water heater. <P>COPYRIGHT: (C)2009,JPO&INPIT |
