This is an open product. That is, the exhaust fan cannot block the entry of outdoor airflow when it is closed. Yin and Yin are the same structure, simple in shape and relatively low in price. This is suitable for places where the decoration requirements are not high and the air enters and exits at will.

2

Wall mounted exhaust fan:

Most of these products are shielded, that is, the exhaust side is equipped with movable louvers (divided into pneumatic and switch linkage), which can block the circulation of indoor and outdoor air when the machine stops working, and play the roles of wind, rain, dust, sound insulation and heat preservation. This exhaust fan adopts multiple impellers. Low operation noise and large exhaust air volume. The center is equipped with a decorative hat, which matches all kinds of cabinets. Rich in decorative beauty, suitable for delicate kitchen, bathroom and other rooms. In addition, there is a novel household bidirectional exhaust fan with linkage and positive and negative switch devices, which can not only exhaust indoor polluted air, but also pull the switch to suck fresh air indoors when necessary, which is economical and practical.

three

Oil fume exhaust fan:

Among them, there are exhaust fans specially designed for family kitchens, which are more expensive, but for some houses with kitchen shutters on one side of the aisle, the effect is remarkable because the machine removes less gas pollutants.

In addition to the fume exhaust fan, for the sake of safety, the installation height of some products without protective covers is not less than 2.3 meters, and the installation of shielded exhaust fans should be careful not to let walls or window cabinets interfere with the activities of louvers, and try to avoid objects that affect air circulation, such as branches outside the window.