(1) HTF (GYF) series fire temperature exhaust axial fans, with excellent performance, high temperature performance, high efficiency, covering less than the centrifugal fan, easy installation and so on. (2) HTF (GYF) series fire temperature exhaust fan axial fans of the best-selling Beijing, Tianjin and use exhaust fans, The Shanghai, Chongqing, Zhejiang, Guangdong, Jiangsu, Shandong, Henan, Hebei, Anhui, Hunan, exhaust fan, Sichuan, Liaoning, Hubei, Shaanxi, Jilin, Inner Mongolia, Shanxi, Guizhou, Heilongjiang, Fujian, Jiangxi, Yunnan, Shenzhen and other provinces (municipalities) and autonomous regions. (3) high temperature performance: Fan tested in accordance with the Fire Code standards GBJ45-82 fan with a unique design, high-temperature exhaust fan motor built reports, configure the motor cooling system can operate continuously at 300's taken 100 degree heat conditions min or more, 100's taken under temperature conditions of 20 consecutive hours / time is not damaged, widely used in high buildings, oven, underground garage, tunnels and other occasions; the advantages of the phone as follows (with the next): ① series in KM3, KM2 coil winding way home KMI help normally closed contacts with interlocks performance, only after KMl main contacts open, KM3, KM2 communication device before closing, thereby eliminating the main way back three-phase short circuit. ② flexible control method, both directly in the fire control room start / stop exhaust fan, and on-site spot control, either manually controlled, and self-control. ③ in the drawing motor control way home, after the implementation of the exchange in the winding, A2 termination of the motor in the power of L3 phase, C2 termination in the L1 phase, before exchange, L3 phase power supply is connected to the C1 terminal, so casually There was an exchange wire end of a two-phase, and then received a three-phase power to ensure the motor quick-change from low to fall to the same, eliminating the motor reversal. Although the above gear belonging to a level speed, only suitable for screening does not require smooth adjustment to a very changed, but simple control of credible, financial useful to repair the same convenient. Exhaust fan for the selection of the main control parameters temperature, air flow, total pressure, efficiency, noise, electrical power, speed and shaft power. Exhaust fan at a temperature not higher than 85 ℃ conditions should be long-term normal operation. Exhaust fan shall ensure that: When the transmission medium temperature at 280 ℃ when continuous work 30min, and still continuously at medium temperature cooling to ambient temperature during normal operation. At rated speed in the work area, fans of the measured pressure curve with the description given in the curve should meet the following requirements: axial-flow exhaust fan at a predetermined flow rate, corresponding to the pressure deviation of ± 5 %. Centrifugal exhaust fan at a predetermined flow rate, corresponding to the pressure deviation of ± 5%. Exhaust fan specifications, Chen Yu-conditioned first quality (certification), 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.