Volute fan, double-sided air inlet, EC DC AC fan with double-sided air inlet

For many application scenarios, how much distance should be left for the frame installation of the backward-inclined (also called backward-facing) wind wheel? This is a common question for most application engineers.

According to different impellers and installation methods, we recommend matching according to the following diagram to get a more perfect solution:

We recommend that the distance between the unilateral installation is set to x (mm), then the X≥ 0.25D is just for the requirements of rear -directional centrifugal fans. For single -in -air or bilateral air inlet fans, there will be different situations. More situations, when dual wind turbines or multiple fans are installed in parallel, we must consider the situation of anti -wind start and reduce mutual influence. nxfan