| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustor for preventing a resonant sound from being produced owing to a combustion fan when a combustion sound of the burner is small and for adjusting the amount of combustion with the aid of two burners. SOLUTION: A combustor apparatus is adapted such that there are provided combustion control means 30 for selectively executing first combustion control for actuating only a first burner 4 and second combustion control for actuating both of the first burner 4 and a second burner 5, and in a predetermined combustion amount range the same combustion amount is available even with the first combustion control and the second combustion control. In the combustor apparatus, the combustion control performs the second combustion control when revolutions of a combustion fan 22 fall within a range of predetermined revolutions where there is the possibility of a resonant sound being produced in the first combustion control when there is performed combustion control at a certain fuel amount within the predetermined combustion amount range.
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