How to solve the centrifugal fan air volume to change?

How to solve the problem that the centrifugal fan has a small air volume and can reduce the density of the blades?

The fan volume should be reduced

1. Reduce the fan speed, use the inverter or change the pulley ratio to reduce the speed;

2. The impeller diameter is smaller, and the small diameter is small;

3. Lower the width of the impeller outlet, reduce the flow to the area, and reduce the air volume;

Is it a reduction? It depends on the specific situation and is judged.

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Label: How to solve the problem of small air volume of centrifugal fan?

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