As we all know, after a computer is purchased and used for a period of time, you will hear a "buzzing" sound when it is running. The source of these "buzzing" sounds is actually the cooling fan in the case. This is also the place where many people questioned, that is, when it was first bought, it was obviously very silent, why suddenly there was such a loud noise? Is it broken? Next, Ruianpu Electronics will analyze the factors that affect the sound of the computer case fan.
Cooling fan
We know that when the cooling fan is running, the fan blades move in a circular motion, and the speed is generally around 1500-3000 rpm, that is, 1500-3000 rpm. When the fan blades are tangent to the air, air volume is generated and a certain amount of noise is generated at the same time. The size of the noise is related to the structure and speed of the fan blades. The noise generated by the fan blades with different inclination angles is different when the air volume meets the cooling demand, and the low-speed cooling fan can reduce the noise. Another factor that affects the noise level of a fan is the balance of the fan blades. When the balance of the fan reaches a high level, it has little effect on the circular motion of the fan blades. The vibration amplitude of the fan increases slightly with the extension of the working time of the fan, and the vibration amplitude of the fan also increases. The balance of the cooling fan blades can be adjusted by professional balancing instruments. The picture shows the balancing machine.
What factors affect the sound of the chassis cooling fan?
Factors affecting fan noise are: poor concentricity of the fan bearing group, abnormal noise of the ball fan ball, reduced oil content of the oily fan, and foreign matter inside the fan.
To sum up, the main factors affecting the noise of the cooling fan of the computer case are: the structure of the fan itself and the later use. If you need to replace the former, you need to find a supplier to replace the parts; the solution of the latter is to pay attention to the maintenance details of the wind turbine. I believe that after the above introduction, everyone has an understanding of the reason why the computer cooling fan works loudly. If you have any questions, please consult Ruianpu.
Shenzhen Ruiapple Electronics Co., Ltd. is a professional fan manufacturer with 20 years of R&D, production and sales experience. Main business: cooling fan, DC fan, AC fan, silent fan, centrifugal fan, blower and other full range of heat dissipation and ventilation products as an integrity enterprise, the series of cooling fan products have obtained UL, CUL, CE, CCC, ROHS, etc. International Certification.
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