Through many years of production practice, these new metal building ridge vents have played a good role in strengthening the natural ventilation of the workshop and improving the working conditions. 

In order to eliminate the backflow phenomenon of the metal building ridge vents, the method of adding a wind deflector in front of the window is generally used to create an artificial negative pressure area, so that the non-wind-proof ridge ventilator can be changed into a wind-proof ridge ventilator. It can be seen that the wind deflector plays a very important role in improving the aerodynamic performance of the roof smoke vent. To understand the influence of the relative size and installation position of the windshield on the ventilation performance of skylights is an important issue in industrial buildings and ventilation design.

For this reason, a series of experiments and research work have been carried out on the relative size and installation position of the roof louver vent. This experimental study is to change the relative position of the windshield under no wind conditions to study the change of the local drag coefficient of the skylight.

Because the roof louver vent has the dual functions of daylighting and ventilation, and is simple in structure and convenient for construction, this type of natural roof ventilation is widely used in metallurgical plants. They are aimed at high temperature workshops in metallurgical plants and high summer temperatures in the central and southern regions. The steel roof ridge vent of the high-temperature workshops in these areas do not need to adjust the sashes not only in summer, even during the transition season and winter. For this purpose, the design and research of 5, 11, 12 thin sashless skylights. For workshops that need to adjust natural ventilation, thin skylights with adjustable sashes should be adopted.

In addition, there is a thin sunroof with a horizontal windshield. Since the lower edge of the windshield of this kind of roof smoke vent has a considerable distance from the roof, it is more convenient to remove snow and dust from the house area. In order to reduce the phenomenon of air backflow through the lower edge of the windshield, a horizontal windshield is installed. Under the action of wind, when the residual pressure at the bottom of the skylight in the workshop is not large, the horizontal wind deflector can increase the exhaust air volume of the skylight.