| 摘要 |
PROBLEM TO BE SOLVED: To provide a boiler device capable of suppressing boiling of supply water in a supply water heater without increasing manufacturing costs.SOLUTION: A boiler device 1 includes a can body 11, a water supply line L1, a supply water heater 20, a water supply pump 16 driven according to an input frequency, a water supply control portion 111 for supplying supply water to the can body 11 by driving the water supply pump 16 at a first frequency with a first flow rate when water supply is requested, and driving the water supply pump 16 at a second frequency smaller than the first frequency when the water supply is not requested, a can pressure acquiring portion 112, a supply water pressure acquiring portion 113, and a second frequency determining portion 115 for determining the second frequency so that a flow rate of the supply water W1 circulated in the water supply line L1 becomes a second flow rate when the water supply is not requested on the basis of the pressure inside of the can body 11 acquired by the can pressure acquiring portion 112 and the pressure of the supply water acquired by the supply water pressure acquiring portion 113.SELECTED DRAWING: Figure 2 |
