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Energy conversion and working principle of Axial Fan

Jun 12, 2018

When the axial flow fan is used, its use is very extensive. To a certain extent, it is the air flow in the same direction of the shaft of the air turbine. For example, the external fan of the air conditioner and the electric fan are the axial flow operation fan. Because the gas flows parallel to the fan shaft. Axial flow fans are usually used in situations where the flow rate is high and the pressure is low.

the fixed position of the axial flow fan makes the air move to a certain extent , mainly consists of a shell and a fan impeller during the manufacturing process , the structure of the whole equipment is simple but the requirement of the data is very high , and the gas delivered by the axial flow fan is required to be free of significant dust , no viscous and fibrous material , the direct connection type temperature of the motor is not more than 40 DEG C , and the belt transmission type temperature does not exceed 60 DEG C .

When the axial flow fan is in operation, the amount of dust it conveys is not more than 150 mg / m3. In the process of operation, when the impeller rotates, the gas enters the impeller directly from the inlet to the impeller. During operation, the gas energy is increased by the impeller, and then flows into the guide vane.

The guide vane of the axial flow fan will change the deflecting air flow into axial flow, and at the same time, it will introduce the gas into the diffuser tube, so that the kinetic energy of the gas can be further converted into pressure energy, and finally the working pipeline will be introduced. The blade of an axial flow fan operates in a manner similar to the wing of an aircraft. However, the latter is to lift up the wing and support the weight of the aircraft, while the axial flow fan fixed position and make the air move.

The cross section of axial fan is generally wing section, and its blade can be fixed in use, and can be rotated around its longitudinal axis to a certain extent. The blade angle or blade spacing can be unadjustable or adjustable. Changing blade angle or spacing is one of the main advantages of axial flow fan. Low flow rate is produced by small blade spacing angle, but higher flow rate can be obtained by increasing blade spacing. http://www.jnblower.com/