[Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - Fan] 1892 France developed into a cross-flow fan; wind chassis in 1898, the Irish design Xiluo Ke forward blades centrifugal fan roof fan, and is widely used in various countries; the 19th century, has been used in mine ventilation axial fan and metallurgical industry blast, but the pressure is only 100 to 300 Pa, the efficiency is only 15 to 25 percent until the 1940s After only get rapid development. In 1935, the German 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 fan tangential acceleration, 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. [Tianjin Jinzhong Ji HVAC purification equipment to recommend the star product - centrifugal fan blower] work, power machine (mainly motor) drives the impeller rotates within the volute casing, impeller air through the suction port from the center inhalation. Due to the dynamic action of the blades on the gas, the gas pressure and speed can be improved, and the centrifugal force along the road leaves the cabinet Shuaixiang discharged from the exhaust port. Because the gas flow in the impeller is mainly in the radial plane heater, it is also known fan runoff. Centrifugal fan impeller and casing composed mainly of small fan impeller is mounted directly on the motor, the large fan by coupling or connection with the motor pulley. Usually unilateral centrifugal fan inlet, with a single-stage impeller; flow can be bilateral intake, with two back to back impellers, also known as double-suction centrifugal fan. Heaters, fans Langfang, 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!