Importance

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Abstract

Provided is a damper position adjusting device allowing adjustment of the position of a damper and capable of detecting any possible rotational abnormality in the damper. The damper position adjusting device is applied to a combustion apparatus such as a boiler 1, and is provided for a damper 8 for adjusting the amount of air supplied to a burner 2 of the combustion apparatus. The damper position adjusting device is equipped with a stepping motor 23 for rotating the damper 8 about a rotation axis 9 thereof, a detected plate 33 provided so as to be capable of rotating integrally with the rotation axis 9 of the damper 8, a detector 34 for detecting a slit 35 formed in the detected plate 33, and a controller 49. The controller 49 controls the stepping motor 23 such that the damper 8 stops at a specified rotation stop position, and detects rotational abnormality in the damper 8 based on a control signal composed of a drive pulse supplied to the stepping motor 23 and a detection signal composed of a detection pulse obtained through detection of the slit 35 by the detector 34.

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First Claim