The fire-fighting smoke exhaust ventilator adopts the control mode of the universal linkage device with the automatic fire alarm system to realize the fire-fighting linkage. When the automatic fire alarm system is used to automatically start, the smoke vent rooflight can be opened in 60s or less than the time when the smoke is filled with the smoke storage bin.

1. The purpose of setting up smoke-proof zones in the plant

The purpose of the smoke prevention zone is to control the smoke within the space where the fire area is located, and to limit the spread of smoke from the smoke storage bin to other areas. The height of the smoke layer must be controlled within a certain height above the lower edge of the smoke storage bin to ensure the safe evacuation of personnel and fire rescue. The smoke-proof zone can also determine the location and number of fire-fighting smoke exhaust ventilator

2. Requirements for setting up smoke-proof zones

2.1. According to the characteristics of smoke diffusion, if the distance between the exhaust outlets is too far, the smoke will quickly settle in the smoke prevention zone and cannot be discharged in time, which will seriously affect the safety of personnel evacuation. The distance between the smoke exhaust vent, electric smoke vent rooflight and the farthest smoke exhaust point shall meet the requirements of national regulations.

2.2. During a fire, the smoke rises to the top of the building and gathers in the smoke storage bin formed by the smoke blocking wall, beam, etc. 

The automatic opening vents of the smoke exhausting plant must be opened at the top of the smoke exhaust area or within the height of the smoke storage bin on the outer wall.

With the general implementation of fire protection regulations, major industrial plants are paying more and more attention to fire protection. The installation of fire and smoke exhaust ventilator has also become a standard configuration of the plant. Only by planning the smoke-proof zones of the plant can the ventilation skylights exert their greater value.