HIGH TEMPERATURE REVERSIBLE AXIAL-FLOW BLOWER FOR EMERGENCY VENTILATION, CAPABLE OF STABLE UTILIZING EVEN IN FIRE CONDITION

摘要

PURPOSE: A high temperature reversible axial-flow blower for emergency ventilation is provided to enhance efficiency by narrowing a gap in the normal times and to compensate a thermal expansion of a blade by widening the gap in high temperatures.;CONSTITUTION: A high temperature reversible axial-flow blower for emergency ventilation comprises a housing(110), a plurality of blades(120), and a blade tip(130). The housing is joined to the interior and exterior or an independent space of a tunnel. The blade is installed in the inside of the housing to be rotated. The blade tip is joined in an end part of the blade, thereby narrowing a gap between the blade and the housing. The blade tip is molten when being exposed to high temperatures above a reference temperature so that the gap between the blade and the housing is maintained even though the blade is thermally expanded by the high temperatures.;COPYRIGHT KIPO 2012