How it works: the usual two-speed high-temperature exhaust fan at low speed in order to meet the exhaust air flow, when the fire broke out, the high temperature exhaust fan in the cabinet under the joint control of the role of automatic high-speed operation, in order to meet the needs of smoke, while the fire smoke No action exhaust pipe smoke damper partition and make wind pipe smoke damper was smoke and makeup air, automatic smoke damper other smoke partition automatically shut down under joint control cabinet role. When the smoke When the temperature reaches 280 ℃, automatic smoke damper will automatically shut down, exhaust fan and make the fan automatically stop. 3.5 m storey kitchen exhaust duct fans, a total of five smoke partitions, fire designed with air conditioning and ventilation systems and smoke exhaust system combined approach. selected two-speed high-temperature exhaust fan, high speed exhaust amount of 63500 m3 / h, the low-speed exhaust volume of 35400 m3 / h exhaust fan fire prices, fresh air and make up air units of air volume is 32000 m3 / h, all the smoke damper fully automatic smoke damper is known to produce large amounts of smoke and hot fire, and consume large amounts of oxygen. On the harm to smoke staggering two-speed exhaust fan fire, smoke contains many toxic elements, even toxic exhaust fan, also due to the combustion lead to hypoxia suffocating to death. Every fire accidents in burned persons, most are also the first to be smoked fainted before being burned to death when a fire smoke spread fast, level up to 0.5-0.8m / s, vertical up to 6-8m / s. In the fire, the fire first, and then a smoke control. Is off the fire extinguishing, broken smoke source, smoke control system was to provide safe passage to escape, and to facilitate the initial fire; smoke control system is referred to as the smoke and smoke two parts. To today's high-rise buildings at the same height, but also the depth of space development, underground development, and in the basement of high-rise buildings, the smoke control system is very important. Design units, we should pay attention to prevention in the design, exhaust design. Fire exhaust fan price | Shijiazhuang exhaust fan | Chenyu good quality air conditioning provided by Wu Cheng Chen Yu Air Conditioning Equipment Co.. Wu Cheng Chen Yu Air Conditioning Equipment Co., Ltd. (www.wccykt.com) strong, credible, in Dezhou fan, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead Chenyu air conditioning and you hand into the brilliant, for a better future!