Common problems in the installation and application of smoke exhaust fans

The smoke exhaust fan is a kind of mechanical equipment that can quickly exhaust the odor, high temperature and kitchen lampblack gas caused by the whole process of production and processing of food materials in the restaurant kitchen. The equipment is characterized by excellent heat resistance and high efficiency. Common problems in the installation of smoke exhaust fan and ventilation duct hose (flexible raw materials and not lit) connection, length is not suitable for less than 200mm, pipe diameter and fan import and export trade specifications are the same. In order to ensure that the hose does not distort during the whole operation of the system software, the installation should be properly tightened. For the white cloth hose installed at the suction end of the fan, it can be installed a little tighter to avoid sucking in when the fan is running and reduce the cross section specification of the white cloth hose. The flexible soft connection on both sides of the smoke exhaust fan is A-class non-combustible raw material, and the sealing gasket material is A-class non-combustible raw material. The diameter of the fan inlet and outlet should only be increased, but not reduced. Sunshade net should be installed in the rear vent, and the wind and rain cap should be lifted when the wind is on. Before pouring concrete, civil engineering should check the basic parts, the design elevation of the basic wall top, the basic geometrical specifications, the position and depth of the embedded anchor bolt holes with the technical professional design drawing. The design elevation of the basic wall top is not suitable for positive deviation (that is, it is not suitable for adjusting into the building elevation). Application of natural environment provisions of the type of transport gas: gas and other natural, no harm to the body, just no corrosive gas, in the unique natural environment, can use flameproof mixed-flow fan. Residue in the gas: no viscous chemical substances are allowed in the gas. The dust and hard fine particles contained in the gas should not exceed 150mg/m3. High temperature smoke exhaust fan is used in tunnel construction, underground parking lot, metallurgical industry and other high temperature smoke exhaust system. In the case of fire, it can quickly reduce the temperature of the smoke exhaust system, and help firefighters immediately enter the disaster area to put out the fire. It is a necessary equipment for safe fire fighting.