As we all know, the function of the cooling fan is very critical, especially in the high temperature environment in summer, it is more difficult to withstand the high temperature, so it is necessary to choose an efficient cooling fan.Then, as the demand for cooling fans continues to grow, there are more and more manufacturers and more and more types.Do you know how to choose a cooling fan?
How to choose cooling fan:
When choosing a cooling fan, wind pressure and air volume are usually compared.For normal ventilation, the air pressure and volume need to overcome the resistance in the ventilation stroke of the cooling fan.The pressure generated by the cooling fan to overcome the resistance of the air supply is called wind pressure.The wind pressure depends mainly on the shape, area, height and speed of the fan blades.Usually, the faster the speed, the bigger the fan blade.The higher the wind pressure, the more the radiator duct is designed to maintain the wind pressure of the fan.
In terms of design, in addition to the general design mentioned above, some cooling fans also use some very special designs.By applying newer technologies and processes, they can better meet the needs of their users.
In addition to the cooling effect, everyone will also pay attention to the working noise of the cooling fan.Since fan noise is the amount of noise produced by the fan when it is working, it is affected by many factors.The noise of the cooling fan should be measured in an anechoic room with noise less than 17dB.The distance from the fan should be one meter and the fan intakes should be aligned according to the direction of the cooling fan shaft.In addition, the spectral characteristics of cooling fan noise are also very important, so it is necessary to use a spectrum analyzer to record the frequency distribution of fan noise.In general, fans are required to be as quiet as possible, and no abnormal sound.