The cooling fan is based on the principle of electromagnetic induction. It has the advantages of wide speed range, light weight, environmental protection and energy saving, controllability, reliability, tolerance to environment and economy, etc. It has obvious advantages, and gradually replaces other types of motors in the field that require high performance.

   The cooling fan uses DC power to provide it with power. The DC motor consists of two parts, a stator and a rotor. There are poles on the stator, and the rotor has windings. After the worker energizes them, a magnetic field is also formed on the rotor. There is an angle between the poles of the stator and the rotor. Under mutual attraction of the magnetic field of the stator, the motor rotates.

Change the position of the brush, you can change the direction of the stator rotor magnetic angle, after this operation, you can change the direction of rotation of the motor.