Performance exhaust fan; fire exhaust fan, said during use, not only to make the appropriate use and maintenance work, and to its performance fully displayed, and improve the efficiency of the fan, so as to increase its scope of application, get the majority of user acceptance. So we should make energy-efficient exhaust fan fire effect on how full performance of it, today as we detail below: For some relationship between the different flows, we adjust the way is also divided into several different approaches that adjust the way little effect on energy savings, even not only saving exhaust fan, but because of presence of a regulatory apparatus more power consumption. Variable-speed control curve closer to the ideal curve. Therefore, the variable-speed control mode is superior, especially the use of variable frequency motor speed control of energy-saving program is the best, but the need for additional frequency devices. Because the underground chambers by underground limiting factors and space, in the wind and air pressure and other factors of satisfaction coefficient, fire fighting systems and smoke exhaust ventilation is usually used in combination can, therefore, we in the underground garage Use two-speed fan, the same is basically the same fans and the same duct. Exhaust fan order situation in general, as the exhaust ventilation fan running at low speed applications, when a fire, fan into a fast run both stand as fire exhaust fan applications. So a machine 2 with not only decrease the cost of health made, save space, more important thing is to greatly enhance the configuration of the application rate and credibility. Should the smoke exhaust and harm are basically two systems left, but the fire exhaust fan only, produce fire bet when running, usually fewer applications, as revealed problems not easily be discovered in time and get the repairs, and real fire When not easy to guarantee Hang Shun betting applications. The two-speed fan just to overcome this deficiency, usually as an exhaust fan running, the problem appears to be excavated and get timely repairs, often in a good posture drops ready. HTF series fire temperature exhaust fan designed specifically for high-temperature exhaust. Equipped with high-temperature fan motors, totally enclosed motor built, and a special motor cooling system exhaust fan installed to ensure safe use of the electric motors at high temperatures. By objective optimization design, the company's HTF temperature exhaust fan fire, the sentence has excellent high temperature performance, high efficiency, low noise, reasonable structure, small size and easy installation. Installed on horizontal, vertical, lifting can be. Exhaust fan manufacturers _ Chenyu air conditioning (certified) _ exhaust fan by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen-yu air-conditioning Co. (www.wccykt.com) is an industry leader in Shandong Dezhou, fans, ventilation equipment, over the years, the company implement the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Chen Yu-conditioned in leadership with the staff warmly welcome all inquiries negotiations to create Chenyu air conditioning better future.