The differences between different blade shapes of fans are mainly reflected in the following aspects:
1.Classified by blade cross-sectional shape:Axial flow fan blades can be divided into rectangular blades, fan-shaped blades, wing shaped blades, aerodynamic blades, blade cone shaped blades, Hefei shaped blades, etc. The impact of different shapes of blades on fan performance varies, for example, rectangular blades have higher noise but lower manufacturing costs; Fan shaped blades have high efficiency but may generate noise; Wing shaped blades can reduce backflow and eddy currents, improve efficiency, and reduce noise; Conical wing blades and Hefei type blades perform well in improving efficiency and reducing noise, but have higher manufacturing costs.
2.Classified by number of leaves:It can be divided into single leaf, double leaf, multi leaf, etc. The number of blades can affect the performance and noise level of the fan, but the specific impact needs to be considered in conjunction with other factors.
3.Classified by blade bending method:It can be divided into curved blades and straight blades. Curved blades typically provide better aerodynamic performance and reduce energy loss.
4.Wing shape design of various parts of the blade:The wing shape design of the root, middle, and tip of the fan blades varies. The root wing shape is thicker to enhance structural strength and stability; Optimizing the lift to drag ratio of the central wing shape to maximize wind energy conversion efficiency; The pointed wing shape is relatively thin to reduce wind resistance and optimize aerodynamic layout, while using high-strength materials to ensure structural safety under high-speed rotation.
Post time: Jan-12-2026