What is a DC brushless cooling fan? What is it mainly composed of? How is it classified? Here, let us tell you the structure and classification of the DC brushless cooling fan.
It can be divided into four main parts: rotor, stator, outer frame, motor (fan brushless DC motor), and some other parts.
1. Fan rotor
Including DC brushless cooling fan blades, which are the core of air flow and the axis of the cooling fan. They are used to support the rolling of the balanced fan blades, the rotor magnetic ring, and the permanent magnets. Magnetic ring.
2. Fan stator
Including the supporting spring, separating the bearing to balance the shaft and the bearing, providing high speed, low friction, long-life rotation, buckle ring, fixed and combined rotation of the entire component, motor part, production rotation direction, rotation size, and rotation speed are key.
3. Outer frame
Play the role of supporting the fan motor and diversion.
4. Fan motor
Including circuit board, control energy consumption and signal access, silicon steel sheet (that is, stator magnet, attached winding coil) to generate magnetic level propulsion switching, silicon steel sheet upper and lower covers, fixed and insulators.
According to different bearings, the micro DC fan can be divided into four types:
1. Single ball bearing brushless fan;
2. Double ball bearing brushless fan;
3. Brushless fan with hydraulic bearing;
4. Four types of nano-bearing brushless fans.
DC brushless cooling fans generally have specifications of 6cm, 7cm, 8cm, and 9cm. A few radiators have begun to use 12cm ultra-large diameter fans. The size and regulations of the fans are usually marked with four digits.