Centrifugal fans, as a common ventilation equipment, their noise sound level, pressure classification, and the differences and application scenarios between single-inlet and double-inlet are crucial for users. The following will introduce these contents in detail to enhance everyone’s familiarity and understanding of centrifugal fans.

The noise sound level of centrifugal fans is mainly affected by two factors: fan structure and working state. Among them, the working state of the fan is determined by the total pressure and air volume. Different models or series of centrifugal ventilators have different sound levels; even for the same model of centrifugal fan, under different working conditions, the sound level will also be different.

For noise control of centrifugal fans, generally, mufflers can be installed at the air inlet and outlet of the fan. If higher requirements are needed, a noise reduction and sound insulation box can also be used. At the same time, installing shock absorbers between the fan and the foundation can also achieve good noise reduction effects.

In centrifugal fans, the common pressure classifications mainly include the following three:

In centrifugal fans, single-inlet means that the fan has only one air inlet and one air outlet. This type of fan has a relatively high pressure and is suitable for occasions such as dust removal workshops and oil fume systems. While double-inlet has two air inlets and one air outlet, and its air volume is relatively large, suitable for occasions with large air volume requirements.

In conclusion, when learning and understanding centrifugal fans, the above contents are essential. Only by mastering these knowledge well can we achieve the practical application of knowledge, increase professional knowledge in this area, and make continuous progress and breakthroughs on the learning path.