A cooling fan is a device that can transfer heat through wind power, and its main function is to lower the temperature of the surrounding environment to maintain the normal operation of the device. Cooling fans are suitable for many different fields, such as electronic devices, automotive industry, construction industry, aerospace, and so on. Next, let's learn about the applications and advantages of cooling fans in different fields.

In the era of rapid technological development, heat dissipation has become a key factor affecting device performance and lifespan. DC cooling fans are widely used in various industries due to their advantages of high efficiency, energy saving, and precise speed regulation, providing solid guarantees for the stable operation of equipment in different fields. In the electronic device industry,

The service life of a cooling fan is determined by three major factors: bearing type, working environment, and operating conditions. The commonly used evaluation index in the industry is MTBF (mean time between failures), which needs to be adjusted based on actual operating parameters.

During the operation of electronic devices, industrial machinery, and other products, the cooling fan plays a crucial role in maintaining the normal temperature of the equipment and ensuring stable operation.

Principle and Implementation of Mainstream Speed Control Methods 1. Voltage speed regulation (analog speed regulation, commonly used for 3-pin fans) Core principle: Based on the positive correlation between the speed of a brushless DC motor and the input voltage, the current is adjusted by changing the amplitude of the winding input DC voltage, thereby changing the stator magnetic field strength and controlling the rotor speed.

The core of a DC cooling fan is driven by a brushless DC motor (BLDC), which relies on electronic commutation to replace traditional carbon brush commutation. It has the characteristics of high efficiency, low noise, and long life. Its working principle can be disassembled into four key links: core structure, electromagnetic drive, electronic commutation, and speed control. The specific steps are as follows: