The working principle of a DC cooling fan is to convert electrical energy into mechanical energy through DC voltage and electromagnetic induction to drive the blades to rotate. The induction magnetic ring drives the blade to continuously rotate through the switch coil and integrated circuit.

Structure and composition:

The invention discloses a rotor of a DC radiating fan, including a DC radiating fan blade, which is an airflow, a fan shaft, a fan shaft for supporting the rotation of the balanced fan blade, a rotor magnetic ring, a permanent magnet, a drive magnetic switch speed key, Magnetic ring frame, fixed magnetic ring. In addition, it also includes a support spring, through which the nodule can be fixed, so that the entire component and the motor component can be rotated, the direction of rotation is generated, and the key rotation speed can be moved. Its speed regulating performance is good and the control is simple.

Material characteristics:

The material of the DC cooling fan is alloy material, which can be used continuously for more than 50,000 hours. The transformer and main control board (including frequency conversion circuit, rectifier filter and amplifier circuit) of the DC internal structure are not affected by voltage fluctuations and have a longer service life.

Working principle of AC cooling fan:

The working principle of AC fan is driven by AC power, the voltage is positive and negative AC, and it does not rely on circuit control to generate magnetic field. The changing speed of the magnetic pole of the silicon steel sheet is determined by the power frequency. In theory, the higher the frequency, the faster the magnetic field switching speed, and the faster the rotation speed. However, the frequency cannot be too fast, too fast will cause difficulty in starting.

Structure and composition:

The internal structure of an AC fan (single-phase) is composed of two coil windings, one is the start winding, and the two windings are connected in series to form three points. The series point is the common end, the start winding end is the start winding end, and the running end is the running end. In addition, a starting capacitor is required, usually between 12uF, with a withstand voltage of 250V, and two connections. One end is connected to the end of the starting winding, and the other end is connected to the end of the running winding to form a triangle. The power supply (without distinguishing the neutral wire of the live wire) is connected to the end of the running winding (that is, the end of the capacitor), the other end is connected to the common end, and the ground wire is connected to the motor casing.

Material characteristics:

The internal structure of the AC fan is mainly a transformer, and the data used for the AC fan is mostly tungsten needles or stainless steel materials. If the voltage is too large, it will affect the service life of the transformer.