| 摘要 |
PROBLEM TO BE SOLVED: To provide a water supplying device, capable of maintaining clean condition suitable for drinking water even under a severe using condition that the temperature of water is raised to a high value, water is reserved in a tank for a long period of time or the like. SOLUTION: A water supplying device is provided with substantially two sets of upper and lower water level detecting sensors 4, equipped for maintaining the position of a water level in a water supplying tank 1 within a predetermined range and installed at two different heights separated in up-and-down, a water supplying pump 2 for supplying water into the water supplying tank 1, a first water storage control means S1, maintaining the amount of storage water at a high water level L1 through the driving and stopping of a water supplying pump 2 based on a pair of upper sensors 12, 14, and a second water storage control means S2, maintaining the amount of storage water at a low water level L2 through the driving and stopping of the water supplying pump 2 based on a pair of lower sensors 13, 14. In this case, when a condition that a water temperature is high or a condition that a using amount of water is small is continued for a long period of time, the second water storage control means S2 is operated instead of the first water storage control means S1 to reduce the amount of storage water.
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