In the steel structure factory building, the roof smoke vent can play a good ventilation function, promote the air circulation in the working space of the factory building, and help alleviate and reduce the erosion of the human body by harmful indoor gases.

The roof smoke vent uses the temperature difference effect to exhaust the dirty air in the room to the outside, and the fresh air from the outside is replenished into the room through the flow, so as to keep the indoor air environment in line with the standard and meet the needs of the production process. Roof louver vent and streamlined natural ventilator are both types of skylights that have been put into use in many modern steel-structured factories.

The main tasks of roof louver vent: dilute and circulate the air in the building to reduce the concentration of harmful gases; add fresh air to the room to meet people's demand for oxygen; control industrial harmful substances, that is, control the dust, harmful gases or steam generated in the production workshop.

General civil buildings and some small industrial plants with low heat generation and slight pollution usually only require keeping the indoor air clean and fresh, and improving the indoor air parameters (temperature, humidity, cleanliness, flow rate) to a certain extent, only general ventilation is required, and no special treatment is required for intake and exhaust. It can be used to ventilate through doors and windows, reduce the temperature of the hall, and increase the airflow speed by electric fans.

Many industrial production workshops emit a large amount of heat, humidity, industrial dust, harmful gases and steam during the production process. Therefore, protective measures are taken to create good working conditions, eliminate the health hazards to workers, and ensure the normal production process. The natural roof ventilation has no power consumption, uses aerodynamic power to achieve ventilation, while taking into account the lighting function, reducing enterprise power consumption, improving the working environment of workers, and improving work efficiency. It is an excellent choice for industrial enterprises to build large-scale factories.