HTF (A) fire temperature exhaust axial fans characteristics and application HTF (A) fire temperature exhaust axial fan using advanced CAD-aided design system, two-speed exhaust fan fire, is the more optimized design developed new products with high efficiency characteristics curve flat, conducive to energy conservation. Optional molded axial flow impeller, built-in high-temperature motors, arranged a special motor cooling system. Selection of two-speed direct-drive motor, to one machine (ie usually send row when using high-temperature exhaust ventilation and fire), arranged after the electrical control box can be remotely controlled automatically. High temperature performance, high efficiency, small size, easy installation (horizontal, vertical, lifting may be), etc., are widely used in high-rise buildings, drying room, underground garages, subways, tunnels and other occasions to send fire smoke and exhaust ventilation . Press GA211-1999 Fire fan high temperature test methods, can run more than 100 minutes of continuous fire exhaust fan price, medium temperature at 100 ℃ continuous operation 20 hours / times without damage at 400 ℃ high temperature conditions, has been the major cities in the country approved for use by the fire department. Fans of the series can be installed in accordance with the requirements of occasions, peripherals silencer box, made HTF (A) -X box-shaped exhaust fan fire. Two-speed exhaust fan used in high-rise building fire in the exhaust system for the high-level basement usually work status exhaust smoke accident two-speed, two-speed asynchronous motor is particularly suitable. Two-speed fan at low speed into a high-speed operation by the synchronous speed exhaust fan to improve the lot of the price, the amount of exhaust accordingly greatly improved exhaust fan, then the system immediately replaced by exhaust smoke condition. But in the design process, will encounter Electric two-speed fan control problems, that is how to solve the motor windings from Δ connection Y connection to the double conversion and interlocks, fire linkage automatic and manual control; fan In high-speed operation and reliability of the protection shutdown how to maximize the protection accident smoke, how to ensure that the power supply and other issues. Two-speed exhaust fan fire, Chen Yu-conditioned low prices (certified), Qinhuangdao exhaust fan provided by Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) is a leader in Dezhou, fans, ventilation equipment, over the years, the company is implementing the scientific management, innovation and development, the principle of honesty and trustworthiness, and satisfy customer needs . Chen Yu-conditioning in leadership with the staff warmly welcome all inquiries negotiations to create Chenyu conditioning a better future.