| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a safer hot water storage type water heater by preventing the supply of the hot water of an unexpected high temperature even in a failure of a temperature detecting means and a mixing valve. <P>SOLUTION: In this hot water storage type water heater comprising a hot water storage tank for storing the hot water of a high temperature boiled up by a heating means and the hot water of a low temperature having a temperature lower than the hot water of the high temperature, a first mixing valve for mixing the hot water of the high temperature and the hot water of a low temperature from the hot water storage tank, a mixing pipe for guiding the mixed-hot water A from the first mixing valve to a second mixing valve, the second mixing valve for mixing the mixed-hot water A mixed by the first mixing valve with the water from a water supply pipe, the water supply pipe for supplying the water to the second mixing valve, a mixed-water passage for supplying the mixed hot water B from the second mixing valve, and a plurality of temperature sensors disposed in the mixed-water passage for detecting temperatures of the mixed-water B, the second mixing valve is controlled to a water side when the plurality of temperature sensors indicate temperatures different from one another. <P>COPYRIGHT: (C)2009,JPO&INPIT |
