| 摘要 |
<p><P>PROBLEM TO BE SOLVED: To provide a hot water storage type hot-water supply bath capable of securely raising temperature of bathtub water to a target temperature for reheating the water or keeping the water warm in a short time as well as suppressing the running cost for reheating or heat-retention. <P>SOLUTION: At the time of reheating the bathtub water by raising its temperature to the target temperature, as assistance for raising the temperature, an indirect heat exchanger 17 side is closed by a three-way valve 23 and a bypass tube 22 is communicated with a bath circulating circuit 16 while hot water in a hot water storage tank 1 is poured from a hot water pouring pipe 24 through the bath circulating circuit 16 into the bathtub 3. Thus, raising temperature in a little temperature difference at the last step, taking much time in heat exchange, is performed by pouring high-temperature hot water, whereby raising temperature to the target hot water temperature can be surely performed in a short time. Further, it is unnecessary to operate H/P to boil water for supply of hot water and add the same for compensating for a heating value given from the indirect heat exchanger 17, which can suppress the running cost. <P>COPYRIGHT: (C)2009,JPO&INPIT</p> |
