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How to know the heat dissipation characteristics of the fan good or bad?
Date：2019/11/14 Views：3042 【BACK】
When it comes to heat dissipation characteristics, we want to think that everyone is more or less mastered according to people's previous manuscripts, and can also refer to the main parameters of motor selection such as rolling bearings and exhaust air. So what factors can harm the heat dissipation characteristics of the cooling fan?
1, cooling fan rolling bearing
The rolling bearings with more applications of cooling fans include oil-bearing and ball bearings. Oil bearing bearings are generally low in price, and the early rotation noise is small. The selection of some manufacturers also adds Teflon to oil-bearing bearings to promote oil-bearing bearings. It also has the credibility of ball bearings. The final manufacturer will sell this rolling bearing for a high price. Ball bearings are more noisy than oil-bearing cooling fans, and the price is also more expensive than oil-bearing bearings. However, its advantage is that it has higher credibility and longer service life than oil-bearing bearings.
It is widely believed that the larger the radiator, the higher the heat dissipation characteristics
In fact, it is an incorrect consciousness. The advantage of a large fan depends on the length of the fan blade and the total heat dissipation area, so the total gas flow is large. However, if the design scheme is not good, the cooling ability of the large fan will not be as good as that of the small fan. In the end, look at the cooling fan leaves. If the other parts of the fan are consistent, only the leaves will be changed from five leaves to seven fan blades. The change in exhaust volume will not be easy to increase. However, as far as the speed ratio of the fan is concerned, the speed ratio of the seven-fan blade will be less than five leaves(under the same condition of natural ventilation). If the relative selection of the seven-fan blade cooling fan, the damage of the rolling bearing, and the oil seepage condition are less, The service life of electric fans is longer.
If the speed of the five-leaf and seven-fan blades is the same, the exhaust capacity of the seven-fan blades will be greater. The higher the speed of the cooling fan, the shorter the relative service life and the greater the noise. In addition, the thicker the fan blade of the cooling fan, the larger the tilt angle of the leaf, the greater the pressure. The inlet of the cooling fan blade(with a large number of 45) is one of the key factors in the decision on the exhaust volume of the cooling fan.
Thanks to your reading, cooling fan manufacturing and technology innovation, we will continue to cooling fan manufacturing industry's latest news technology, the latest trend of the first time in front of you. Industrial cooling fan to show customers one-stop cooling fan motor selection acquisition, cooling fan production process, manufacturing industry machinery and equipment heat pipe cooling solution!
Http://www.dxymotors.com
1, cooling fan rolling bearing
The rolling bearings with more applications of cooling fans include oil-bearing and ball bearings. Oil bearing bearings are generally low in price, and the early rotation noise is small. The selection of some manufacturers also adds Teflon to oil-bearing bearings to promote oil-bearing bearings. It also has the credibility of ball bearings. The final manufacturer will sell this rolling bearing for a high price. Ball bearings are more noisy than oil-bearing cooling fans, and the price is also more expensive than oil-bearing bearings. However, its advantage is that it has higher credibility and longer service life than oil-bearing bearings.
It is widely believed that the larger the radiator, the higher the heat dissipation characteristics
In fact, it is an incorrect consciousness. The advantage of a large fan depends on the length of the fan blade and the total heat dissipation area, so the total gas flow is large. However, if the design scheme is not good, the cooling ability of the large fan will not be as good as that of the small fan. In the end, look at the cooling fan leaves. If the other parts of the fan are consistent, only the leaves will be changed from five leaves to seven fan blades. The change in exhaust volume will not be easy to increase. However, as far as the speed ratio of the fan is concerned, the speed ratio of the seven-fan blade will be less than five leaves(under the same condition of natural ventilation). If the relative selection of the seven-fan blade cooling fan, the damage of the rolling bearing, and the oil seepage condition are less, The service life of electric fans is longer.
If the speed of the five-leaf and seven-fan blades is the same, the exhaust capacity of the seven-fan blades will be greater. The higher the speed of the cooling fan, the shorter the relative service life and the greater the noise. In addition, the thicker the fan blade of the cooling fan, the larger the tilt angle of the leaf, the greater the pressure. The inlet of the cooling fan blade(with a large number of 45) is one of the key factors in the decision on the exhaust volume of the cooling fan.
Thanks to your reading, cooling fan manufacturing and technology innovation, we will continue to cooling fan manufacturing industry's latest news technology, the latest trend of the first time in front of you. Industrial cooling fan to show customers one-stop cooling fan motor selection acquisition, cooling fan production process, manufacturing industry machinery and equipment heat pipe cooling solution!
Http://www.dxymotors.com
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