The noise of the high-pressure fan mainly comes from wind drying. The sound of the motor itself is not very loud, and the air inlet and outlet of the high-pressure fan itself have been equipped with silencer sponge, which has been reduced by a large part.
At present, the wind noise of the machine is actually the sound produced by the friction between the tuyere and the air. The greater the flow and velocity, the greater the noise, such as a car, the faster you run, the noise will also increase.
After knowing the reason, it's easy to say, how to reduce the noise? Consider from two aspects:
The first is to start from the place of import and export: the common way is to install a dedicated silencer for the fan in this place to reduce noise, and its silencing effect can effectively reduce 5 to 10 decibels. Other installation effects are as follows. It can be installed at the air inlet or at the air outlet.
Second, considering the noise reduction of the overall equipment, this kind of effect is very good, that is, it eliminates wind noise and can eliminate the electromagnetic sound of operation. It is to make a noise reduction speaker and install and fix the fan to achieve overall isolation. Pay attention to ventilation and need to install heat dissipation equipment, because the production is troublesome and the cost is high, generally few customers will use it, unless it is a unit with higher requirements in the workplace.
There are advantages and disadvantages to the two noise reduction methods. Which method to use can be selected according to the requirements of the site, and many customers choose not to muffle the noise. The noise of the low-power fan is not too large, and you can directly ignore it. Compare 400w and other noises. Talking like an adult.
