Radiator fan motor mainly has the following types:
Dc brushless motor: The use of electromagnetic induction principle, by the rotor, stator, permanent magnet and circuit board and other parts of the composition. When the current on the circuit board changes, it creates a magnetic field on the stator, which acts on the permanent magnet and causes the rotor to start spinning. The rotating rotor drives the cooling fan blades to rotate together, thus forming heat dissipation.
Dc motor: common in small cooling fans, because of its relatively small size, can meet the needs of small cooling fans. The working principle is to use the interaction of electromagnetic fields to make the motor rotate and drive the blades of the cooling fan to operate. The speed and torque of the DC motor can be achieved by controlling the voltage or current.
Ac motor: Usually used for large cooling fans, its speed is higher than the DC motor, and has a larger torque, can drive a larger cooling fan blade operation. The working principle of the AC motor is to rotate the motor through the AC current provided by the power supply. Ac motors are divided into single-phase motors and three-phase motors, of which three-phase motors are usually used for large cooling fans.
In addition, there are some new motor types that are also used in radiator fans, such as permanent magnet motors, switched reluctance motors and servo motors. These motors have their own advantages, such as small size, light weight, high efficiency, wide speed range, high performance, high reliability, low noise and easy maintenance, which can improve the energy efficiency, reliability and service life of the cooling fan, while reducing noise and vibration.
Cooling fan motors are widely used in various fields, including small household appliances (such as air purifiers, humidifiers, etc.), electronic refrigeration (such as electronic refrigerators, drinking fountains, etc.) and power supplies (such as communication power supplies, inverter power supplies, etc.).