| 摘要 |
PROBLEM TO BE SOLVED: To provide a hot-air heating device capable of adjusting a temperature of supply hot air to a desired temperature while securing high heating performance.SOLUTION: In a hot-air heating device 100, an upper limit supply fuel amount to a combustor 20 is determined from a range of the whole supply fuel amounts so that a temperature of the supply air from a supply port 72 is kept at a prescribed upper limit hot-air temperature or less, on the basis of a predicted temperature rise characteristics in which a relationship between the supply fuel amount to the combustor 20 and a predicted temperature rise obtained by predicting temperature rise of the air sucked from a suction port 70 in implementing combustion with the supply fuel amount during being supplied from the supply port 72, is defined in advance, and a temperature of the suction air, a target supply fuel amount between a minimum supply fuel amount and the upper limit supply fuel amount is determined on the basis of temperature difference between the temperature of the suction air and a set target temperature, and the fuel of the target supply fuel amount is supplied to the combustor 20. |
