How do we choose a DC fan? What causes the slow cooling fan

The working principle of the cooling fan is based on energy conversion, that is, electricity → electromagnetic energy → mechanical energy → kinetic energy. The principles of circuits are usually divided into different forms. Different circuits have different fan performance. The speed of the cooling fan depends on the voltage, angle and diameter of the fan blades, the number of fan blades and the bearings. So, what is the reason for the slow cooling fan speed?

The main determining conditions of the cooling fan speed are the fan design and components, bearing friction and wind resistance of blade angle. If the air pressure of the cooling fan is insufficient, the fan speed will also be affected.

1. Outdoor environment (such as sand, high temperature and low temperature) will also affect the speed of the cooling fan.

2. Check whether the cooling fan has not been cleaned for a long time, because the accumulation of dust and impurities will make the fan work. Reducing the descent speed requires more effort.

3. Check whether the cooling fan is installed correctly. If installed incorrectly, the fan speed will also decrease if the fan is loose.

There are six key choices for DC fans:

First, choose a target that can get a lot of air. We need to see if the value of a lot of air meets our expectations.

Second, choose a goal that can achieve a smaller scale. Small cooling fans shall be selected according to the environmental requirements of our site.

Second, choose a target that can achieve a low noise level. Noise level is always the standard of fan quality. Therefore, this aspect should be carefully selected.

Then, select the energy-saving target. When choosing cooling fans, energy conservation is our major goal.

Then, select the target of the long service life name. Being able to work for a long time is our necessary choice.

Sixth, choose the low-cost target. This is a very realistic problem.

DC fan, EC fan, CPU heat sink