Forward bent impeller, back bent impeller and radial impeller are all common drum designs in centrifugal fans, and they have some differences in performance, efficiency and application. Here is a comparison between the three types of impellers:

1,Forward-bent impeller: The installation direction of the blade is consistent with the rotation direction of the impeller, which is a forward-bent impeller.

The characteristics of the forward curved impeller are simply that the blade is narrow and small, and the outlet wind pressure is high. Front curved blade drums generally produce lower noise levels than back curved blade drums. Because the forward-bent blade reduces the impact and eddy noise of air passing through the blade, it may be more appropriate in some noise-sensitive applications.

2, Backbent impeller: its obvious feature is that the installation direction is opposite to the rotation direction of the impeller. The backward-bent impeller has high speed, large air volume and low pressure, but high efficiency. The efficiency of the centrifugal fan with the backward impeller in China can reach 80%-90%, which is widely used, and is not easy to scale and overload. Front curved blade drums generally produce lower noise levels than back curved blade drums. Because the forward-bent blade reduces the impact and eddy noise of air passing through the blade, it may be more appropriate in some noise-sensitive applications.

3,Radial impeller: The outside extension of the blade is at a 90 degree Angle to the tangent line of the direction of rotation of the blade, that is, the radial impeller. The performance of radial impeller is between the front bending type and the back bending type, and also has its characteristics of not easy to scale, so it is used in mine and other occasions.

It is important to note that the specific drum design chosen is evaluated based on your specific application needs and operating conditions. It is recommended to consult a professional centrifugal fan manufacturer or supplier when purchasing centrifugal fans to get the best advice for your specific application. Guangdong Chungfo Electronic Technology company is a wholesale DC centrifugal fan manufacturer, whether it is dc centrifugal fan, dc cooling centrifugal fan, or centrifugal cooling fan we have, welcome major buyers to come to purchase consultation.