Linkage Control Security Research of the Mechanical Smoke Exhaust System in Large Space Buildings

When the large space buildings are in the event of fire, the mechanical smoke exhaust system must start safely and reliably with the smoke spreading quickly. A former analysis to the linkage control of the mechanical smoke exhaust system showed that the control of exhaust fans is safe and reliable with multiple redundant control. but the control security of exhaust ports in the large space buildings is very poor. According to the recent research, reliability of the linkage control of exhaust ports set in large space areas is the key to improve the reliability of the exhaust system's linkage control in large space buildings. We should set on-site mechanical control devices, remote multiple manual direct control devices and on-site electric control switch devices for exhaust ports in large space buildings. And the linked switches of exhaust ports should also be able to multiple interlocks control the exhaust fans.