The technological evolution of cooling fans

Early fan design
In the early stages of electronic products, the design of cooling fans was relatively simple, mainly relying on basic motors and blades to achieve air flow. At that time, most fans were driven by direct current motors (DC), and there was not much room for adjusting the fan's speed, air volume, and noise level. Therefore, early cooling fans often faced problems such as excessive noise and uneven heat dissipation.
The emergence of multi-stage fan systems
With the improvement of electronic product performance, the demand for heat dissipation has become increasingly complex. In order to meet higher heat dissipation requirements, multi-stage fan systems have emerged. By working together with multiple fans, users can achieve more efficient heat dissipation, especially in high-performance devices such as game consoles and workstations. A multi-stage fan system can help evenly distribute heat and prevent device overheating.

Introduction of Efficient Bearing Technology
With the development of fan technology, new bearing technologies are gradually being introduced into the market. The different types of bearing technologies such as dynamic pressure bearings, ball bearings, and hydraulic bearings have not only improved the heat dissipation effect of fans, but also made significant progress in noise, durability, and other aspects. Especially dynamic pressure bearings, due to their advantages of low noise and long lifespan, have become the preferred choice for many high-end cooling fans.

Application of PWM (Pulse Width Modulation) Technology
With the improvement of cooling fan technology, users have put forward higher requirements for the adjustment function of fans. The introduction of PWM technology enables the fan speed to be dynamically adjusted according to actual heat dissipation needs, thereby achieving more efficient heat dissipation and lower noise levels. By cooperating with the motherboard or controller, PWM technology enables the fan to automatically adjust its speed under different load conditions to achieve optimal heat dissipation.