Fire exhaust fan ventilation areas as an important device, more and plays an irreplaceable role in a lot of places also must install the device. However, it should also be clear that the fan device is varied, and why the most widely used application exhaust fan fire it? Today by our local manufacturers to explain this issue. Actually, the most important reason is because the exhaust fan fire smoke exhaust facilities into facilities and exhaust facilities. The smoke facility pressurized air supply can be divided into the two natural smoke exhaust facilities and amenities can be opened outside the window. High-rise building can be divided into two kinds of mechanical exhaust facilities and exhaust facilities opened outside the window of the natural draft facilities. Fire exhaust fan that exhaust from the flue gas is essentially convection heat and cold, so there must be a discharge port imports of cold air and hot fumes. In the early fire, this exhaust from the fire area to make the pressure drop, resulting in a negative pressure, smoke will not spread to other areas. 

keywords: Fire exhaust fan, exhaust fan, exhaust fan fire Application,