1.HTF-Ⅰ, HTF-Ⅱ represents pressure type fire temperature exhaust fan, leaf type axial flow type: HTF-Ⅰ (single speed) and HTF-Ⅱ (double speed) of two; HTF-Ⅲ, HTF -Ⅳ representation pressure fire temperature exhaust professionals; 2, HTF-X as a silencer fire temperature exhaust fan, the user can choose according to the actual needs of different kinds; 3, HTF-W series rooftop fire temperature exhaust fan Users can choose according to actual needs retardant fiberglass hood or steel hood; 4, HTF-D low pressure type fire temperature exhaust fan; 5. Special note: GYF and HTF series fan is a similar product. Products; 1.HTF type fire temperature exhaust axial fans, its basic structure in the form of axial-flow exhaust fan quotes, using high temperature motor, arranged a special motor cooling system, products by the National Fire Equipment Quality Supervision and Inspection Center Press GA211-1999 "fire exhaust fan high temperature test method" high-temperature test at medium temperature conditions of high temperature 300 ℃ continuous operation over 60 minutes at 100 ℃ under the conditions of continuous operation 20 hours / times without damage, smoke ventilation can be dual-use. 1.2 Categories by Mounting points: horizontal and Roof (W type). Press the air flow pressure point: there is pressure type Ⅰ and Ⅱ (double speed); medium-pressure (mixed flow impeller) has Ⅲ, Ⅳ type (double speed); there is low pressure type D1, D2 type. Press Speed ??points: single-speed, two-speed, variable frequency (by frequency conversion motor with variable frequency controller, inverter implementation, in order to adapt to different conditions, it is recommended to adjust the frequency locked in 25Hz ~ 50Hz). 1.3. To meet the noise requirements of different places, the fan can be equipped with different lengths muffler, it can be made into a sheathed (housing silencer). 2, HTF-type fire temperature exhaust axial fans working conditions Operating temperature: -20 ℃ ~ + 60 ℃ (continuous operation); temperature: 100 ℃ (continuous operation 20 hours), 300 ℃ (continuous operation 60 minutes ); temperature: <90%; medium conditions: air (dust content of no more than 100mg / m3); Power supply: three-phase, 380V / 50Hz; 3, HTF-type fire temperature exhaust fan axial fans can be widely used application rise construction, oven, underground garage, tunnels and other places exhaust ventilation. Because the underground chambers by underground limiting factors and space, in the wind and air pressure and other factors of satisfaction factor, the fire's smoke exhaust ventilation system and is usually combined with the exhaust fan can wucheng, therefore, we dual speed fan in the underground garage, the same is basically the same fans and the same duct. Under normal circumstances, low-speed fan applications run as exhaust ventilation exhaust fan principle, 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 the exhaust fan is running, usually fewer applications, as revealed problems not easily be discovered in time and get the repairs, while real fire, is 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. Exhaust fan exhaust fan application _ _ Chenyu conditioned by Wu Cheng Chen-yu air-conditioning Limited. Wu Cheng Chen-yu air-conditioning Co. (www.wccykt.com) strong, credible, Shandong Texas 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 into the brilliant air conditioning and you work for a better future!