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The effect of the number of cooling fan blades on performance

Time: 2020-11-05

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The effect of the number of cooling fan blades on performance

The cooling fans sold on the market have different quality parameters and different numbers of blades. Common cooling fans are mainly three-blade or five-blade. Does the number of cooling fan blades affect the performance of the cooling fan?

 

Suzhou Santian Precision Mould Co., Ltd. tells you: Yes, the number of blades of the cooling fan will have a certain impact on the performance of the fan. Therefore, when choosing a cooling fan, not only compare the parameters of the fan, but also pay attention to the blades quantity.

 

Plastic cooling fan blades


The main effects of the number of blades on the performance of the cooling fan are:

 

First: the number of blades is too small, the expansion angle increases, resulting in a high pressure gradient, thickening of the boundary layer, and reducing the efficiency of the cooling fan.

 

effect of the number of cooling fan blades


Second: The number of blades increases, the load of a single blade decreases, which reduces the deflection of the outlet airflow angle of the impeller. When other conditions are the same, the slip coefficient increases and the energy head coefficient increases accordingly.

 

cooling fan blades on performance


Third: Excessive number of blades increases the flow friction loss of the airflow, resulting in blockage of the inlet of the flow channel, which reduces the efficiency of the cooling fan.

 

Suzhou Santian Precise Mould Co.,Ltd.


The cooling fan blades manufactured by Suzhou Santian Precision Mould Co., Ltd. are of good quality and competitive price. Customers can customize materials and models. If you need them, please contact us.