| 摘要 |
<p>An auto smoke removing system for a building is provided to suppress over pressure in the air supply duct and the smoke removing zone accurately by rapidly controlling the inflow of the air according to the atmospheric pressure variation of the air supply duct. An auto smoke removing system for a building comprises an air supply duct(10), a blower(30), a plurality of pressure differential control dampers(20), an inflow control damper(40), a pair of upper and lower differential pressure measurement parts(50,60), and a controller(70). The air supply duct has a plurality of outlets ejecting flowed air to a smoke removing zone(2). The blower is installed in an inlet(12) of the air supply duct. The pressure differential control damper is installed at the outlet(14) of the air supply duct. The pressure differential control damper the air volume ejected from the air supply duct to the smoke removing zone. The inflow control damper opens and closes the inlet of the air supply duct or a suction port of the blower. The differential pressure measurement parts are installed at the inner top and bottom parts of the air supply duct. The differential pressure measurement parts measure the difference of the atmospheric pressure and the inner pressure. The controller compares measured value and the set value and determines unusual condition. The controller controls the opening and closing of the inflow control damper.</p> |
