[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product --DWT roof fan] performance characteristics using advanced CAD software, designed by the multi-objective optimization. DWT-Ⅰ series machines No. 12 # -24 # A total of eight machines No. fans, by changing the speed, angle and leaf-type methods, the expansion of the range of performance parameters to meet the needs of different conditions of use, to the fan with the system area with to facilitate energy saving and noise reduction. Smooth operation and long life low inertia, high dynamic smooth precision, smooth operation, and within the standard requirements of the modern enterprise performance indicators were higher than the fan industry standards to ensure that the fan at the leading position in the peer. Suitable for a wide range, according to the requirements of the fan suction fan, made into explosion proof, for flammable, explosive and corrosive gases with forced ventilation occasions; on many occasions by provinces and Technical Supervision detection qualified fan, the user ease of use. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - Fan] 1892 France developed into a cross-flow fan; in 1898, the Irish people to design a centrifugal fan blades 西罗柯 ago, and for all countries widely used; the 19th century, has been used in mine ventilation axial fan and metallurgical industry blast, but the pressure is only 100 to 300 Pa, only 15 to 25 percent efficiency exhaust fan until after the 1940s before they get rapid development. 1935 wind chassis, Germany first axial flow fan for boilers and other pressure ventilation and the wind; in 1948, Denmark made the running variable pitch axial flow fan; rotating axial flow fan, axial flow ventilation meridional acceleration machine, oblique flow fan and cross-flow fans have also gained development. In the direction of gas flow, can be divided into centrifugal fan, axial, mixed flow and cross-flow and other types. Wind chassis, fan Hebei, Tianjin Jinzhong Ji fan manufacturers provided by Tianjin Jinzhong Ji HVAC purification equipment. Tianjin Jinzhong Ji HVAC purification equipment Limited (www.Jzjnt.com) strong, credible, in Tianjin fans, ventilation equipment industry has accumulated a large number of loyal customers. The company better work attitude and constantly improving innovative ideas will lead the group into the brilliant and you work for a better future!