| 摘要 |
<P>PROBLEM TO BE SOLVED: To allow bathtub water after hot water supply to exert a desired sterilizing effect even if the hot water is supplied to a bathtub in which the remaining hot water is stored, in a hot water supply device comprising a function for keeping a concentration of a silver ion of the bathtub water at a desired concentration by dissolving the silver ion from a silver ion generator to the hot water supply-water which flows in a hot water supply circuit. Ž<P>SOLUTION: This hot water supply device comprises a high concentration setting means for applying a high concentration signal necessary for creating the hot water supply-water of a high concentration of which the concentration of the silver ion is adjusted to be higher than a target concentration to the silver ion generator, and the remaining hot water detecting means outputting a remaining hot water existence signal when the remaining hot water is stored in the bathtub in starting hot water supply, and the hot water supply-water of the high concentration is created by applying the high concentration signal from the high concentration setting means to the silver ion generator (S14), when the remaining hot water existence signal is outputted from the remaining hot water detecting means. Ž<P>COPYRIGHT: (C)2010,JPO&INPIT Ž
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