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The difference between forward and backward centrifugal fans

Release time: 31-08-2020

  There are many differences between forward-inclined centrifugal fans and backward-inclined centrifugal fans on the Internet. Today, Hangzhou Aifuluo Electric Co., Ltd. will talk about the difference between a forward-inclined centrifugal fan and a backward-inclined centrifugal fan from three angles. You will know how to make the difference if you encounter it in the future.

https://www.aflmotor.com/

  They mainly differ in noise, energy consumption, and power.

  First of all, let us see, what is a forward-inclined centrifugal fan and what is a backward-inclined centrifugal fan?

  Centrifugal fans are divided into forward-inclined centrifugal fans and backward-inclined centrifugal fans by the blades of the assembled fans. The forward inclined type is generally a blower, and the backward inclined type is an induced draft fan. The difference is the length of the impeller hub and the edge of the impeller. The forward tilt is parallel to the edge of the impeller. The forward tilt impeller is also called the forward impeller if the exit angle of the impeller is greater than 90 degrees. The forward impeller is mostly at medium pressure. The backward tilt and the impeller are not parallel, and the length is a few centimeters or a few millimeters from the edge of the impeller. It means that the exit angle of the impeller is less than 90 degrees. The backward tilt impeller is also called backward impeller. The backward impeller is mainly high pressure.

  The difference between backward centrifugal fan and forward centrifugal fan is mainly manifested in the following three aspects:

  1. Noise: The operating noise of the forward-leaning centrifugal fan is greater than that of the backward-leaning centrifugal fan.

  2. Power consumption: Since the efficiency of the forward-inclined centrifugal fan is lower than that of the backward-inclined centrifugal fan, its power consumption is greater than that of the backward-inclined centrifugal fan.

  3. Power: The static pressure head used to overcome the resistance of the system, the forward centrifugal fan is smaller than the backward centrifugal fan.

  Since the channel in the backward inclined blade fan is gradually enlarged, the negative force loss is smaller than that of the forward inclined fan.

  Therefore, the efficiency of forward-inclined centrifugal fans is lower than that of backward-inclined centrifugal fans.

  Both forward and backward centrifugal fans have their own advantages and disadvantages. You can choose according to the actual situation to maximize the function of centrifugal fans and create greater value.

  The above is the explanation of "the difference between forward-inclined centrifugal fan and backward-inclined centrifugal fan". Their differences are mainly the above points. I hope it will be helpful to you. I want to know more about forward-inclined centrifugal fan and backward-inclined centrifugal fan. , You can contact us.

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