Texas Sheng clean air-conditioning main products are roof fan, stainless steel fan, all-aluminum fans, centrifugal fans and other products, as well as all kinds of steel, aluminum, stainless steel hood, various models, a variety of purposes, details, please consult our company with reliable quality assurance system, your satisfaction is our relentless pursuit. When it comes to roof fans, is based on the original roof ventilator on the advantages of similar products at home and abroad, developed another roof ventilator. It is a standard form and more, making steel hood, wide range of applications, can use the occasion and the amount of wind, pressure and noise of different requirements. Xiao Bian gave you talk roof fan installation environment particularity. Roof fan is mounted on the roofs exhaust ventilation, use of the environment due to the installation of the special nature of the decision of the fan using special materials and structures. Air back device settings after shutdown to prevent roof fan, because the high-speed rotation of the fan under heat and pressure, resulting in a lot of the wind speed increases in the duct, the fan motor inverted start is very negative, may be due to starting current excessive damage. Roof fan should be designed with reliable rain, snow, anti-wind performance, snow and sand like rain, as snow and sand because not only into the fan from the top, in the outdoor wind speed reaches a certain intensity, steel hood, also may enter from the bottom of the fan for forced air grain storage, power, petroleum, chemical, metallurgy, stadiums and other modern facilities, on medium high temperature applications. Also to remind you, some of the tools needed for the construction, the secondary component, oxygen acetylene welding and other consumable materials, to meet local supply. I plant specializing in the production of steel, aluminum, stainless steel roof fan and hood, the model is complete. Experimental steps: (1) before and after the experiment were recorded atmospheric pressure and temperature, for comparison. (2) China Unicom pipe, the measured pressure gauge and test hole duct connection, attention should view the load before connecting piping for leaks and, if you can not use. (3) measuring the torque arm strength plus weights, specializing in the production of steel hood, so that the arm can maintain the level. (4) mounted on the fan to be measured, then remove the impeller, and then start the motor. If not horizontal arm, then combined with the weight until the level is reached, then the load torque recorded. (5) the impeller installed, then connect the inlet duct and tests, in order to see whether the rotary coupling scratching phenomenon friction between the impeller and the inlet. (6) Motor starts, let it run for 10 minutes, then the arm to maintain the level of aluminum, steel hood, wait until the fan is stable, record the parameter values ??desired. (7) by reducing the flow, to change the working conditions of the fan, and then record the parameters taken when working conditions, and generally ten measuring conditions. Sheng clean air conditioning (Figure) _ _ steel roof fan hood steel hood provided by the Texas Air Conditioning Equipment Co., Ltd. Sheng-purification. 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.