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How to judge the performance of the cooling fan?
Date：2020/4/3 Views：1794 【BACK】
Speaking of heat dissipation performance, in our previous reports probably know a lot, but also from the bearing, air volume and other selected parameters as a reference for selection. So, what factors will affect the performance of the cooling fan? Cooling Fan performance evaluation 1. Heat sink fan bearing heat sink fan bearing oil bearing and ball bearing, oil bearing generally low price, the initial rotation noise is small, but there are also manufacturers that add teflon to their oil-bearing bearings, which provide reliability for ball bearings, and end up selling these bearings at higher prices. Ball bearings are quieter and more expensive than oil-bearing heat sinks, but they have the advantage of higher reliability and longer life than oil bearings. 2. It is considered that the bigger the heat sink, the better the heat dissipation performance of the heat sink equipment. The advantage of the large fan is that the fan blade is long and the heat dissipation area is large, so the ventilation capacity is large. But if not properly designed, a large fan may not be as good as a small one at dissipating heat. Finally, look at the cooling fan blades, if the same fan other parts do not change, as long as the blades from 5 to 7, the change in wind may not increase much. However, with respect to the speed of the fan, when the speed of the 7-blade is lower than 5-blade with the same ventilation rate, the adoption of the 7-blade cooling fan, bearing wear, less oil leakage, fan life long. If five leaves and seven leaves move at the same speed, seven leaves will have more air. The faster the fan goes, the shorter its life, and the louder the noise. In addition, the thicker the blade of the cooling fan, the larger the inclined angle of the blade, the greater the wind pressure. The inlet angle of the fan blade (maximum 45 degrees) is also one of the important factors to determine the fan volume. For more information on cooling fans, please click:http://www.dxymotors.com
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