| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler device capable of performing continuous water feed control that prevents overshooting or undershooting of a target water level, even when a combustion amount stage is abruptly changed.SOLUTION: A boiler device 1 having an economizer 3 is provided, in which, when a water level detected by a water level detection sensor 25 is out of a first proper water level region, which is calculated on the basis of a plurality of parameters measured by a first supply water temperature sensor 32 and including temperature of water supplied to a boiler can body, a control unit 10 intermittently controls a second water supply control section 102 to start or stop water supply until the water level detected by the water level detection sensor 25 settles within a second proper water level region, which is calculated on the basis of a plurality of parameters measured by a second supply water temperature sensor 33 and including temperature of water supplied to the economizer 3.SELECTED DRAWING: Figure 1 |
