Industrial fan impeller

タイトルまたは説明

The blade is the main part of the impeller, and the blade of the centrifugal fan is generally 6 to *4. The impeller structure is mainly determined by the blade outlet installation Angle and shape, the blade outlet Angle is mainly divided into forward, radial and backward three. Blade shape has plate shape, circular arc shape and hollow wing shape and so on. Hollow airfoil is relatively complicated to manufacture and has excellent aerodynamic characteristics, high strength and high aerodynamic efficiency.

The front plate of the impeller mainly has three forms: flat front plate, conical front plate and arc front plate. China's early production of centrifugal fans is the use of flat front disk, this front disk has a bad impact on the air flow condition, low efficiency. The impeller manufacturing of cone and arc front disk is slightly more complex than flat front disk, and the efficiency and impeller strength are superior. But from an economic point of view, for batch production or large fans using arc front disk is very advantageous.