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Precautions for reducing low noise of box fans | 20 Inch Box Fan Circulador

Precautions for reducing low noise of box fans | 20 Inch Box Fan Circulador

Precautions for reducing low noise of box fans | 20 Inch Box Fan Circulador

Dec 02,2021

System impedance: Air flow resistance will cause air flow noise.
Turbulent flow of air flow: Due to the poor design of the flow channel, the turbulence of the air will cause high-frequency noise. If the flow channel is not improved, it will be difficult to improve quality.
Fan speed and size: The faster the fan speed, the better the heat dissipation effect. The larger the fan size, the greater the air volume and the better the heat dissipation effect. Fan rotation
The higher the speed, the greater the noise, the larger the size, the greater the noise.
Temperature rise: After the temperature rises, the temperature difference decreases, and the heat dissipation effect decreases.
Vibration: Vibration will increase the noise of the fan, reduce the life span and reduce the speed.
Voltage fluctuation: Voltage fluctuation will cause the fan speed to change, make the work unstable and generate extra noise.
Design considerations: Other design requirements must also be taken into consideration to ensure the heat dissipation effect.
(1) The distance from the fan into the wind: the distance of 3~5mm is the most basic point
3mm-the efficiency of the fan is 80%
4mm-the efficiency of the fan is 90%
5mm-the efficiency of the fan is 100%
(2) Different air inlets and outlets will cause great changes in airflow resistance. Of course, the larger the opening of the inlet and outlet, the better.
(3) Do not place obstructing objects (such as chips and interfaces) near the air inlet of the fan, otherwise it will reduce the air flow of the fan.
(4) It is better to use rubber to fix the fan, rather than metal screws, so as to avoid vibration.
(5) The space design of the fan. For the efficiency and noise of the fan, the distance between the fan blade and the fan housing must be 5-10mm. The blades of the fan must be close to Tongue for better efficiency.
20 Inch Box Fan Circulador
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