| 摘要 |
PROBLEM TO BE SOLVED: To provide a combustion device for preventing the noises of a combustion fan and the hunting of the temperature of a heating object due to a burner. SOLUTION: The combustion device comprises a fan control means 53 for controlling a driving current in the combustion fan so that the combustion fan is rotated at a target rotating speed determined in accordance with a correlation between the supply amount of combustion air to the burner and the rotating speed of the combustion fan when the load of the combustion fan is at a predetermined level, a correction coefficient calculating means 55 for calculating a correction coefficient which corrects the target rotating speed to obtain a target combustion amount depending on a degree of deviation between the actual load level of the combustion fan and the predetermined level, and a rotating speed correcting means 56 for changing the correction coefficient with a first change rate when the change amount of the load of the combustion fan per preset time exceeds a preset range and for changing the correction coefficient with a second change rate smaller than the first change rate when the change amount is within the preset range. COPYRIGHT: (C)2006,JPO&NCIPI
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