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[know no] micro heat dissipation fan noise causes and solutions?

Release time:

2019-09-09

1. What are the main factors related to noise? The noise of the micro fan is related to friction and air flow. The higher the speed and the greater the air volume, the greater the noise caused, and the vibration of the micro fan itself is also a factor that cannot be ignored. Of course, the high quality micro fan's own vibration will be very small, but the first two are difficult to overcome.

1. What are the main factors related to noise?
The noise of the micro fan is related to friction and air flow. The higher the speed and the greater the air volume, the greater the noise caused, and the vibration of the micro fan itself is also a factor that cannot be ignored. Of course, the high quality micro fan's own vibration will be very smallBut the first two are difficult to overcome.
 
2. How to measure the noise of the micro cooling fan?
Noise is the size of the noise generated when the micro fan is working, which is affected by many factors, and the unit is decibel (dB). When measuring the noise of the micro fan, it needs to be carried out in an anechoic room with noise less than 17dB, one meter away from the fan and along the rotating shaft of the micro fan.
 
The direction of the fan is aligned with the air inlet of the fan and measured by A weighting. The spectral characteristics of micro-fan noise is also very important, so it is also necessary to record the noise frequency distribution of micro-fan with a spectrum analyzer. Generally, the noise of micro-fan is required
 
As small as possible, and there can be no abnormal sound.
 
3. How can we reduce the noise of the micro fan?
To solve this problem, we can try to use a larger fan. Should be in the case of the same air volume, the working noise of the large fan at a lower speed is less than the working noise of the small fan at a higher speed. Another cause that we tend to overlookThe element is the bearing of the miniature fan. Due to the friction collision between the shaft and the bearing when the micro fan rotates at high speed, it is also a main source of noise of the micro fan.
 
Shenzhen Jiangshanlai Electronic Technology Co., Ltd. is a professional DC brushless motor, DC cooling fan, DC brushless fan, DC bracket fan, boosterCooling fanMicro cooling fan, DC cooling fan, DC blower, and non-standardquasi fan customization, research and development, manufacturing, sales, service in one of the large enterprises, dc fan wholesale factory, dc fan supplier. Products sell well in Guangdong, Shenzhen, Guangzhou, Dongguan, Fujian, Zhejiang, Jiangsu and other places.
If there is a need, you can consult us.
 

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