Part of the exhaust fan exhaust fan of a structure type, blowing section casing 2, Group 3 impeller, the wind bends 4, the inner cylinder 5, the support plate 6, motor 7, the wind pipe as shown, since The basic structure type cooling type exhaust fan with the same general fire temperature exhaust fan, is composed of an inner cylinder and an outer cylinder, impellers, bushings, motors, baffle size and position unchanged. The inner cylinder, the size and location of the outer cylinder in the axial direction essentially unchanged. Two about the wind pipe 7 is arranged in the lateral distribution of the outer tube ends, the front end of the inner tube means the wind trap 3, remove the inner loop impeller group. Works: the heat from the fire temperature exhaust fan according to aerodynamic design, supply exhaust fan when the fan is working, the outer cylinder transport temperature flue gas or induction of general gases, the inner cylinder exhaust gas from the wind bend, Since the inner cylinder gas emissions, reduce the gas pressure within the cylinder, the wind pipe outside air from entering the inner tube inside the catheter, to the motor cooling air from the inner tube into the elbow, lower the temperature inside the blower tube is completely dependent on air from circulating complete, ensure the fan is working properly. Manufacturers explain that affect multiple industries fire exhaust fan normal start of the factors fire exhaust fan, as a new ideal fire necessary facilities, widely used in construction. Fire exhaust fan in everyday use need to pay attention to daily maintenance and maintenance, in the face of circumstances, specializing in the production exhaust fan, exhaust fan if the fire can not start properly, exhaust fans, will bring very serious consequences, high temperature exhaust fan, manufacturers summarizes the factors that affect the four exhaust fan fire started: 1. Power failure, plug connection is bad, the lack of current 2. wiring faults, such as loose, short, other wiring errors. Limiting device (such as air switch) 3. line does not match, can not meet the start-up current. The motor was damaged, leading to not start. These are the reasons summarized in factory fire exhaust fan does not start. When we encounter such a failure from the four aspects of the investigation, which can guarantee fire exhaust fan can start properly. Sheng clean air conditioning (Figure), supply exhaust fan, exhaust fan from the Texas Air Conditioning Equipment Co., Ltd. Sheng-purification provided. Texas Air Conditioning Equipment Co., Ltd. Sheng-purification (www.dzhffj.com) located in Dezhou City, Shandong Province, Wuhan City acres of industrial park. Scraps and development in the wave of market economy, the current clean air conditioning Sheng Tong has a high profile in fan, ventilation equipment, and enjoys a good reputation. Sheng purification of air conditioning made the whole network business alliance certification, marking our service and management level has reached a new height. Sheng clean air-conditioning staff willing to work with all people of insight and common development, for a better future.