Fan, the fan has a long history.In China many years BC has made a simple wooden for hollow car, its action principle and modern centrifugal fan are basically the same.In 1862, the British, the bell invented the centrifugal fan, the impeller and casing concentric circular, chassis system of brick, wood after impeller used to straight blade, efficiency is only about 40%, mainly used for mine ventilation.1880, designed for the mine air supply volute casing, and backward curved blade centrifugal fan, the structure is more perfect.
In France in 1892 developed into the cross flow fan;In 1898, the Irish people to the blade design ahead of west Luo Ke type centrifugal fan, and widely used for each country;In the 19th century, axial flow fan has been applied in mine ventilation and metallurgical industry blast, but the pressure is only 100 ~ 100 mpa, efficiency was only about 15 ~ 25%, until the 20th century 40 s after get faster development.
In 1935, the first use the pressure such as axial flow fan for boiler ventilation and wind;In 1948, Denmark made in the operation of the moving blade adjustable axial flow fan;Screw axial flow fan, meridian acceleration axial fan, oblique flow fan and cross flow fan were also obtained the development.