Return influence of the centrifugal fan

This phenomenon will mainly bring three negative effects: first, it will lead to the outlet area of the centrifugal fan equipment can not be fully utilized, that is to say, the actual air volume is far from the requirements of the design. For users, work productivity will be affected. Second, it will affect the uniformity of the equipment air supply, and affect the heat transfer performance of the evaporator. Third, if the air outlet of the centrifugal fan has a backflow phenomenon, then in the process of its operation, these reflux gas will collide with the high-speed rotating impeller, and then it will produce a large aerodynamic noise. To sum up, if the backflow problem is ignored in the design, then the use performance of the centrifugal fan equipment will have a great negative impact. Therefore, it is suggested that we must pay attention to this problem and take measures as far as possible to avoid this problem.

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