DC fan What is the function of fan and blade ?

DC fan What is the function of fan and blade?

DC DC heat dissipation fan through DC voltage and electromagnetic induction, from electrical energy into machinery, so as to drive the blade rotation, so the fan shell and blade is an essential whole, many people know that these two parts are very important, so what is the role between them? Here's an analysis for you.

1. Blade curvature: Within a certain range, the greater the blade curvature, the same speed and the greater the gas kinetic energy, that is, the greater the air volume and pressure; At the same time, the greater the blade resistance, the greater the motor torque required.

2. Motor diameter: Due to the existence of motor and bearing, the central part of DC DC fan spindle must have no air flow through the blind area, and the diameter of the spindle will determine the size of the blind area. The large spindle diameters are largely dependent on the power of the fan motor - the high power of the motor requires larger stator winding coils and must take up more space in the case of no longitudinal expansion (increasing height) and then must be expanded horizontally (increasing area).

3. Blade radian: The blade of DC DC fan does not extend vertically along the radial direction on the overhead plane, but slightly in the direction of rotation, except that it has a certain curvature on the cross-section.

There's a curve, there's a curve. If the blade extends vertically along the radial direction, the airflow driven by the ROTATION of the DC fan will be scattered on one side of the outlet, with short air supply interval and strength.

Don't focus; If the current product version has a slight arc, it ensures that the airflow is concentrated in the front of the outlet column space, spacing and wind pressure.

3. Blade spacing: if the spacing between blades is too small, it will lead to airflow disturbance, increase blade surface friction and reduce fan efficiency; Excessive spacing between blades will lead to increased pressure loss and insufficient wind pressure.

The interaction between fan blade curvature, blade radian and blade spacing affects the quality of the DC fan. Shanyang DC cooling fan agent prompts you to choose high quality and quality guaranteed fans to play the biggest role between them.