DC Fanbetween the blade and the fan?

Fan housing and blades are an essential whole. What are the effects between the two?

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

2. Motor diameter: due to the existence of the motor and bearings, the central part of the axial fan spindle inevitably has no blind area where the air flow passes through, and the spindle diameter determines the size of the blind area. The size of the spindle diameter depends mainly on the power of the fan motor-a high-power motor requires a larger stator winding coil, which will inevitably take up more space. In the case of not being able to expand vertically (increase the height), it has to expand horizontally (Increase the area).

3. Blade radian: In addition to having a certain curvature on the cross-section, the fan blade does not extend straight along the radial direction in the top view plane, but slightly bends in the direction of rotation, showing a certain radian. If the blades extend straight along the radial direction, the airflow driven by the rotation of the cooling fan will be scattered on the side of the air outlet, the air supply distance is short, and the "power" is not concentrated; If the current product version is slightly radian, it can ensure that the air flow is concentrated in the columnar space directly in front of the air outlet, increasing the air supply distance and air pressure.

4. Blade spacing: If the distance between the blades is too small, it will cause airflow disturbance, increase friction on the blade surface, and reduce fan efficiency; if the distance between the blades is too large, it will cause increased pressure loss and insufficient wind pressure.

Shenzhen Jiangshanlai Electronic Technology Co., Ltd. is a professional brushless DC motor, DC cooling fan, DC brushless fan, DC bracket fan, supercharged cooling fan, micro cooling fan, DC cooling fan, DC blower and non-standard customized fan A large-scale enterprise integrating R & D, manufacturing, sales and service, DC fan manufacturer, DC fan supplier wholesale. Products sell well in Guangdong, Shenzhen, Guangzhou, Dongguan, Fujian, Zhejiang, Jiangsu and other places.