The ventilation and smoke exhaust of industrial plants is generally realized through ventilation equipment. Ventilation equipment is divided into power ventilation and unpowered ventilation. Unpowered ventilation equipment can meet the requirement of modern environmental protection, and low noise. Automatic smoke vents belong to unpowered ventilation equipment.

1. The necessity of ventilation and smoke exhaust in workshop

For most factories and workshops, high-density heat and smoke and dust will be generated in the actual production process. If the heat dissipation conditions of the plant are not in place and the ventilation in the workshop is not smooth, the generated heat and exhaust gas will accumulate in the workshop, causing some safety hazards, discomfort to the site workers, poor working environment, and negative physical and mental health for the workers. Impact, seriously affecting the enthusiasm of workers and production efficiency. The installation of automatic smoke vents can effectively solve the above-mentioned problems of the owners. How does the smoke exhaust skylight achieve ventilation and smoke exhaust.

When the window sash of the smoke ventilator opens, the wind pressure caused by the wind outside the factory building and the thermal pressure caused by the temperature difference between the inside and outside of the factory building are used to promote the air flow and exchange the air inside and outside the factory building. When the natural wind outside the plant is blowing toward the plant, a positive pressure zone is formed on the windward side of the plant, and a negative pressure zone is formed on the leeward side. Ventilation is provided through the smoke vent. The thermal pressure ventilation is the air flow caused by the difference in air density caused by the temperature difference inside and outside the plant: when the air temperature in the plant is higher than the outside of the plant, the air outside the plant enters the plant from the lower part of the plant, and from the upper part of the plant Exhaust to the outside through the smoke exhaust skylight.