Specific division of noise sound level and pressure of centrifugal fan

Regarding the centrifugal fan, the specific content that will be involved below is the noise level and common pressure classification of the centrifugal fan, as well as the difference and application of the single-inlet and double-inlet air, mainly for these, let everyone pass Learning, to enhance familiarity and understanding of the product.
1. The noise level of the centrifugal fan
Regarding the noise level of a centrifugal fan, there are mainly two related factors: the fan structure and the working status of the fan.
Moreover, its working state is determined by the total pressure and air volume.
Therefore, different models or series of centrifugal fans must have different sound levels.
Moreover, even if it is the same model, if it is in different working conditions, its sound level will be different.
The noise control method of the centrifugal fan is generally to install a muffler on the air inlet and outlet of the fan. If the requirements are relatively high, a sound insulation box can also be used. At the same time, a shock absorber can be installed between the fan and the foundation, so that, To get a good noise reduction effect. 2. Common pressure classification of centrifugal fans
Among centrifugal fans, in terms of pressure, the common classifications mainly include the following three:
Low-pressure centrifugal fan: the pressure is below 1000Pa.