| 摘要 |
An apparatus for preventing foreign matters from being deposited is provided to ensure the normal operation of a boiler by preventing a duct from being clogged by impurities of a combustion gas. A ventilation fan(11) is installed in the front of a boiler(10). One or a plurality of ducts(13) are coupled to the ventilation fan to exhaust a gas generated from the boiler. A plurality of guide vanes(15) are installed at a portion of the duct such that the gas is uniformly exhausted. A dust collector(14) is installed at a front end of the duct to remove dust. A column is installed in the front of the guide vane. A plurality of blades are mounted on the column at a predetermined interval. The blade is inclined toward the guide vane so that an inclination angle is adjusted if necessary. The blade has a thin plate.
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