The function of the greenhouse vent is to ventilate the air. Ventilation is an important management measure in greenhouse production. Through ventilation, it can not only adjust the temperature in the greenhouse, supplement the carbon dioxide in the greenhouse, but also discharge water vapor and reduce the air humidity in the greenhouse. In addition, the harmful gases in the greenhouse can be discharged by ventilation.

SA-M01 Aluminum Air Vent

The settings of greenhouse vents vary in form. There are windows on the rear wall at regular intervals for ventilation, and there are openings on the front roof for ventilation. At present, the most widely used solar greenhouse vents are slit vents, that is, two rows of vents are set up and down on the front roof. The upper row is located near the ridge, with strong exhaust capacity, mainly to discharge hot and humid air to the outside. The lower row is set at a height of about 1 meter from the ground on the front roof, mainly for air intake: if the setting is too high, it will affect the ventilation effect, and if it is set too low, it is easy for the cold air on the ground to rush directly into the greenhouse, causing "sweeping wind" , Affect the growth of peach trees, and cold damage or freezing damage occurs in severe cases. Therefore, it is very important to grasp the appropriate height of the lower exhaust vents. The upper and lower rows of ventilation doors are formed by overlapping the upper, middle and lower shed films according to the height requirements. The lower film usually has no gap between the two films. If the air needs to be released, it will be opened upward from the seam between the two films, and it will become a ventilation channel. The air volume can be adjusted by the width of the seam. This ventilation method, The shed film is not easy to be damaged, the ventilation operation speed is fast, and the ventilation effect is good.