What Are The Shapes Of Industrial Cooling Fan Blades

The efficiency of industrial cooling fans mainly depends on factors such as the diameter and axial length of the cooling fan blades, fan speed, and blade shape angle. Generally speaking, industrial cooling fans with fewer blades are prone to generating higher air pressure, but their operating noise is also higher; The opposite is true for cooling fans with more blades.
The shapes of the cooling fan blades include sickle type, trapezoidal type, and AVC patented folding edge type. Relatively speaking, the sickle shaped fan blades operate relatively smoothly and quietly, but the wind pressure they can generate is also relatively small; Trapezoidal fan blades are prone to generating significant wind pressure, but they also generate significant noise. The folding edge type is the most excellent design, which can generate high wind pressure while maintaining low noise, but currently only used in AVC's own cooling fan products. Currently, sickle shaped designs are commonly seen.
Thin right angle fan blades are the earliest products, but they are still not outdated. Fans using this type of DC fan blade can only perform well in terms of noise, wind pressure, air volume, and lifespan, making it suitable for products with lower heat output.
Thick curved blades have the best heat dissipation ability because they generate high air pressure and sufficient air volume, which is also beneficial for improving the speed of cold and heat exchange. However, thick curved blades can bring more noise, and the centrifugal force on the shaft center during rotation is greater, resulting in severe wear and tear, which also has a certain impact on the lifespan. Use this type of fan blade more frequently on violent fans that provide greater airflow.
The curved blade is an improvement on the thick curved blade, and the DC fan uses more blades, so the air volume can be basically guaranteed. In addition, due to the lighter weight of the blades, their rotational speed is higher, and the speed is uniform, with less noise. But the biggest drawback of thin curved blades is that the wind pressure is slightly lower
A well-designed industrial cooling fan blade that can produce a large output of air volume and pressure at low fan speeds without generating too much noise. In addition to shape, the angle of blade inclination is also important and should be designed in accordance with the characteristics of the motor and the needs of the heat dissipation object. Otherwise, simply pursuing a large blade inclination angle may result in high wind noise from the cooling fan and low wind power.