| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler device capable of preventing degradation of combustion efficiency due to fluctuation of pressure loss caused by preheating of a fuel gas, and realizing efficient combustion control.SOLUTION: A boiler device 1 includes a first temperature sensor 41 disposed at an upstream side of an air heater 40, a second temperature sensor 42 disposed at a downstream side of the air heater 40, a frequency setting portion 91 for setting a frequency of a blower 20 according to required load of a boiler 2, a temperature correcting portion 92 for correcting the frequency on the basis of a temperature detected by the first temperature sensor 41 and a temperature detected by the second temperature sensor 42 so that a flow amount of combustion air reaches a prescribed value, and an air flow rate control portion 93 for controlling the blower 20 on the basis of the frequency corrected by the temperature correcting portion 92.SELECTED DRAWING: Figure 2 |
