The DC motor consists of a permanent magnet rotor, a multi-stage winding stator, a position sensor, and an electronic commutation drive control circuit. The rotor is composed of motor shell + magnetic strip + shaft core + fan blade. Stator part: enameled wire + plastic coated silicon steel sheet + bearing + Hall induction detection + drive circuit board + shaft.
The core components of the Dc Cross Flow Fan are the stator and rotor. Through Ampere's right-hand rule, we know that when a conductor passes an electric current, a magnetic field will be generated around it. If the conductor is placed in another fixed magnetic field, an attraction or repulsion will be generated, which will cause the object to move. Inside the fan blade of the DC fan, a rubber magnet pre-filled with magnetism is attached. Surrounding the silicon steel sheet, the shaft is wound with two sets of coils, and the Hall induction component is used as a synchronous detection device to control a set of circuits. The magnetic pole and the rubber magnet generate attraction and repulsion. When the repulsive force is greater than the static friction force of the fan, the fan blades rotate naturally. Since the Hall sensing element provides a synchronization signal, the fan blades can continue to run, and the direction of rotation can be determined according to Fleming's right-hand rule. That's how the Dc Cross Flow Blower works.
