According to the principle classification, fans can be divided into two categories: AC axial fans and centrifugal fans. These two types of fans have different structures, different working principles, and different operating characteristics.

This AC axial fan has many different characteristics in terms of structural configuration, design method, and internal flow phenomenon, and it is not easy to grasp the fan's low-noise design and internal flow mechanism.

Denna AC-axiella fläkt har många olika egenskaper när det gäller strukturell konfiguration, designmetod och internt flödesfenomen, och det är inte lätt att förstå fläktens låga brusdesign och interna flödesmekanism.

This AC axial fan has many different characteristics in terms of structural configuration, design method, and internal flow phenomenon, and it is not easy to grasp the fan's low-noise design and internal flow mechanism.