Fire exhaust fan set Location: Distance exhaust fan fire tunnel side walls should not be too close, so as not to affect the ventilation exhaust fan fire arrangement minimum distance from the wall of the tunnel 20 cm, rescue 'fixed' settings will tunnel into. Disaster different regions make full use of deviated and both ends of the tunnel exhaust fan fire rescue station designated as wind and smoke into the new channel, ventilation must be maintained at a positive pressure cross-channel ports to prevent flue gas flow channel. the accident tunnel ventilation system blows air through the secure tunnel to cross the channel, inhibiting the flue gas into a cross-channel and tunnel accident did not occur to meet the evacuees facing fresh air into the tunnel cross passages and safety, while ensuring that the required waiting area fresh air inside the tunnel according to different regions use different accident disaster prevention ventilation. 'sentinel' Disaster ventilation program implementation point relief when the train, in the 'point' within the scope of cross-channel contacts in all settings reversed Fan made from fresh wind tunnel safety. HTF (A) fire temperature exhaust axial fans using advanced CAD-aided design systems, is the more optimized design developed new products exhaust fan price, high efficiency curve has flattened features conducive to energy conservation. Optional molded axial impeller exhaust fan, built-in high-temperature exhaust fan motor applications, arranged a special motor cooling system. Use two-speed motor direct-drive, to one machine (that usually send row when high-temperature exhaust ventilation and firefighting), arranged after the electrical control box can be remotely controlled automatically. High temperature performance, high efficiency, small size, easy installation (horizontal, vertical, lifting can be), etc., are widely used in high-rise buildings, drying room, underground garage, subway, tunnels and other occasions to send fire smoke and exhaust ventilation . Press GA211-1999 Fire fan high temperature test methods, can run at 400 ℃ more than 100 minutes of continuous high temperature, medium temperature at 100 ℃ continuous operation 20 hours / time is not damaged, it has been approved for use by fire departments in major cities nationwide. Fans of the series may use the occasion of the installation requirements, peripherals silencer box, made HTF (A) -X box-shaped exhaust fan the fire. Setting smoke damper in exhaust fan and exhaust pipe connections, not the end in the exhaust pipe set exhaust valves, exhaust valves and pay attention to the function smoke damper is completely different device. Usually normally closed exhaust valve exhaust fan use, open fire, and alarm host linkage, open the condition that an outbreak of fire alarm system (detector alarm), fire alarm host into automatic mode, exhaust valves open automatically linked row Smoke fan starts. Smoke damper is usually always open, but also turned a fire, but when the smoke temperature reaches 280 ℃, the exhaust damper automatically closes, the linkage has been opened fan stops running. Exhaust fan price _ Chenyu air conditioning (certified) _ Qinhuangdao 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.