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Time：2021-08-12Views：0
The current mining machine case has high power and high temperature. Therefore, the cooling fan is required to have a large air volume. Therefore, relatively, the cooling fan has a large current and power, and the noise is also large. What should I do?
If the speed of the 7-blade cooling fan of the original mining machine reaches 6000 rpm, the air volume is 240CFM, and the power is 2.4A, the noise is large, and the 11-blade cooling fan is used to achieve the same high air volume, but the speed is only 4300RPM, so that the fan runs The scream is smaller.
In addition, in order to reduce noise, the PWM speed control function can be adjusted. When the frequency of use is high, the speed is high, and vice versa, the speed is low. This can also reduce the noise of the mining machine during heat dissipation
In fact, there is no equal relationship between the air volume and the wind pressure of the cooling fan and the number of blades. However, at the same speed, the air volume with more blades will generally be larger, but the blades with more blades generally do not have a high speed, and the same motor size , The speed will be lower.
For example, the 12038 is a commonly used cooling fan for mining machines. The 11-blade air volume and pressure are 230CFM, 27.5mmH2O, and the speed can only reach 4300 rpm. The 7-blade model, the air volume and pressure is 241CFM, 31.3mmH2O, but the speed is 6200. Turn. From this point of view, the air volume and pressure of the 7-blade are a little bit larger than that of the 11-blade.
The above two models are highly used in the mining machine industry, and the cost of the 11-blade is lower. Therefore, the usage is larger. The air volume and pressure data of the two cooling fans are very similar. Therefore, from this point of view, the number of blades is not a decisive factor in determining the air volume.
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