| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide a boiler device capable of accurately controlling a water supply amount to a boiler water pipe and stably operating even if the boiler device has a large difference between the maximum water supply amount and the minimum water supply amount such as a boiler device having a large turndown ratio. <P>SOLUTION: The boiler device includes a boiler water pipe 12, a combustion unit 15 heating the boiler water pipe 12, a water supply unit 20 supplying water to the boiler water pipe 12, and a water supply control unit 27 controlling the water supply amount to the boiler water pipe 12 by the water supply unit 20. The water supply control unit 27 is configured to control the water supply amount to the boiler water pipe 12 in accordance with an evaporation amount that varies depending on the combustion state of the combustion unit 15. The water supply unit 20 continuously supplies water when the water supply amount to the boiler water pipe 12 is a prescribed water amount or larger, and intermittently supplies water when the water supply amount to the boiler water pipe 12 is smaller than the prescribed water amount. <P>COPYRIGHT: (C)2012,JPO&INPIT |
