The noise of miniature cooling fans is a very vague concept. Here, our experienced heat dissipation industry technicians will explain to you the classification of miniature cooling fans. There are two types of noise:
To solve the mechanical noise of miniature fans, it is necessary to start with the material and assembly of the fan. The following reasons will cause the fan to be loud:
1. The induction IC touches the magnetic stripe of the fan blade of the miniature fan and produces a frictional sound.
2. The motor component of miniature fans - the coil is ground to the fan blade.
3. The size of the assembly structure is incorrect, and the bearing wears the oil ring.
4. The material problem of the bearing and the shaft core will cause noise. A cooling fan factory should do well in the fan material quality inspection.
Solving the fan wind noise of miniature fans is in the design stage: mainly in the angle, shape, and resistance of the fan blades. There are some fine work, dynamics, mechanics, electronics and other fields designed in it. Currently in mainland China, there are no experts and supporting equipment in this field. Most of them are modeled after the fan shape of Japan or Taiwan. One thing that needs to be added is that the assembly problem of miniature fans to the micro projector will cause noise.
The main business of DONGGUAN WANHANG ELECTRONICS TECHNOLOGY CO LTD focuses on the modular design of miniature fans, covering different products such as computers, power supplies, communications, household appliances, auto parts and so on. If necessary, please consult us.