The ventilation principle of the smoke exhaust ventilator is to use the position difference between indoor and outdoor to realize natural smoke exhaust, and the fire linkage is one of the more widely used control methods, which can automatically open the smoke and heat vents for natural smoke exhaust. Such a control method is extremely convenient for industrial plants, and the roof ventilation equipment of industrial plants can choose such a linkage method to control the smoke vent skylights. In order to realize the fire-fighting linkage of the daylighting and smoke exhaust ventilator, it needs to have a fire-fighting smoke exhaust system. Its basic components include:

1. Control part: master control electric box, daily switch

2. Emergency part: backup power supply, daily switch, wind and rain sensor

3. Fire signal receiving part: smoke sensor (receiving fire signal from fire center)

4. Execution part: window drive motor

The realization of the fire-fighting linkage control system is to link various fire-fighting equipment after confirming the occurrence of a fire hazard to achieve the function of alarming and extinguishing the fire. Therefore, fire protection linkage is very necessary for industrial plants with fire hazards, and can provide a strong guarantee for the safety of our industrial plants.