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The difference between centrifugal fan and axial fan

Release time: 08-12-2020

  The centrifugal fan produced by HAINING AFL Fan Factory and the axial fan have the same purpose for ventilation and heat dissipation of the equipment, and they have the same goal. Today, China Centrifugal Fan supplier will share with you what is the difference between the two:

axial fan,centrifugal fan,The difference between centrifugal fan and axial fan

  a. In principle

  1. Principle of axial flow fan: The gas enters the rotating blade channel axially and is pressurized, and then is discharged axially from the other side.

  2. Principle of centrifugal fan: airflow flows axially into the rotating blade passage, and is thrown to the outer edge of the impeller under the action of centrifugal force, and is discharged from the air outlet.

  b. Air volume and pressure

  1. The centrifugal fan has a high pressure coefficient and a relatively low flow coefficient. According to the pressure, it is divided into high pressure (15000~3000Pa), medium pressure (3000~1000Pa), and low pressure (<1000Pa).

  2. The axial flow fan has the characteristics of low pressure and large flow. According to the pressure, it is divided into high pressure (500~5000Pa) and low pressure (<500Pa). Low pressure is mainly used for ventilation in general places.

  c. structure

  1. The centrifugal fan is generally composed of impeller, casing, current collector, motor and transmission parts (such as main shaft, belt wheel, bearing, V-belt, etc.). The impeller consists of a disc, blades (the number of blades is generally 8-16), a wheel cover, and a shaft disc. The casing is composed of a volute plate, side plates and legs. Centrifugal fans can adopt forward or backward leaning blades, which can meet the requirements of air volume and pressure more widely. Moreover, the cabinet can be muffled, which has obvious advantages in noise indicators. The motor and the fan are generally connected by a shaft.

  2. Axial fans are generally composed of an impeller, a casing, a current collector and a motor. The impeller is composed of blades and a hub, and the casing is composed of a fan tube, a frame plate and a bracket. The blade diameter of an axial fan is limited to the diameter of the casing. The motor is generally in the fan.

  d. Air volume and pressure

  1. The centrifugal fan has a high pressure coefficient and a relatively low flow coefficient. According to the pressure, it is divided into high pressure (15000~3000Pa), medium pressure (3000~1000Pa), and low pressure (<1000Pa).

  2. The axial flow fan has the characteristics of low pressure and large flow. According to the pressure, it is divided into high pressure (500~5000Pa) and low pressure (<500Pa). Low pressure is mainly used for ventilation in general places.

  e. Installation

  Centrifugal fans are often installed at the inlet and outlet of air conditioning units, boiler drums, induced draft fans, etc. The installation is more complicated, and the installation of axial fans is often in the middle of the duct or at the front of the duct outlet.

  China Centrifugal Fan supplier AFL is a professional manufacturer of centrifugal fans and axial fans, with decades of experience and dozens of foreign customers. If you have any needs in this area, you can contact AFL Fan Factory. We have always adhered to the cooperation model of "equality and mutual trust" to bring more benefits to every customer. We look forward to your cooperation, thank you.

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