Detailed explanation of axial flow fan
About axial fan:
Detailed explanation of axial flow fan
Axial Flow Fans are different from Centrifugal Fans and Blowers in the way they move the air. An Axial Flow Fan or Industrial Axial Fan uses a propeller to draw the air into it, and discharge it, in the same axial direction. A Centrifugal Blower draws the air into the inlet of the blower housing with one of seven types of wheels. The blower draws the air through the wheel, and discharges it at 90 degrees out through the discharge of the housing. A device that moves air with a propeller is typically referred to as a Fan, while one with a wheel is referred to as a Blower.
In this section we will cover axial type Industrial Axial Fans or Industrial Axial Flow Fans.
The two most common types of industrial, Axial Flow Fans are Tube Axial Fans (or Ducted Fans) and Panel Fans or Wall Fans. Tube Axial Fans use a propeller, rotating in a round section of duct, which is mounted into ductwork of the same diameter to exhaust hot and/or contaminated air from a process or system. Panel Fans or Wall Fans use a propeller, rotating in a flat panel, which is mounted to a wall to exhaust air from a room or draw air into a room. Other Axial Flow Fans that incorporate the Tube Axial Fan design are Personnel Coolers and Air Circulators.
Tube Axial Fans can be direct driven with the propeller mounted directly on the motor shaft or belt driven with the propeller mounted on a separate fan shaft and driven by the motor through belts and sheaves. Axial Flow Fans are ideal for moving large volumes of air, rated in cubic feet of air per minute (CFM) at low pressures, rated in static pressure (SP).
The propellers used in Axial Flow Fans are typically made of plastic, fabricated steel, cast aluminum or stainless steel. However, plastic propellers are generally not considered “industrial duty” and are therefore used only in commercial or residential fans.
To make the proper fan selection, you must consider the following system conditions the fan will be subjected to:
1. What is the required airflow?
This is rated in cubic feet of air per minute (CFM) or, in metric equivalent, it is rated in cubic meters of air per hour (M?/Hr).
2. What is the static pressure through the complete system?
This is rated in static pressure water gauge (SP) or, in metric equivalent, it is rated in Pascal’s (Pa).
The most common applications for Axial Flow Fans include:
Paint spray booth exhaust.
Fume hood exhaust to exhaust dangerous fumes away from the operator.
Welding fume exhaust in welding booths.
Process cooling and exhaust of machinery and/or systems.
Spot cooling of heat generating equipment such as generators or transformers.
General ventilation using supply air and/or make-up air in factories, warehouses, foundries,
garages, laundries and transformer, engine or equipment rooms.
People cooling in hot work areas.
Exhausting heat and cooling of kilns, forges and in steel mills.
Boosting airflow through long ductwork.
Exhausting mist and vapor in paper mills or industrial parts washers prior to painting parts.
About axial flow fan types
Axial flow fans are a popular choice for many industrial applications due to their strong air flow capabilities. They come in three main types: propeller, tube axial, and vane axial. Propeller fans are most commonly used for dilution ventilation or cooling and are suited for applications that require low speeds and large volumes of air. Tube axial fans feature a propeller wheel within a cylindrical housing, while vaneaxial fans have blades that draw in air in parallel to the fan's axis. When there is no pressure in the system, an axial fan will produce the greatest volume flow.
Where to buy axial fan ？
AFL Fan Equipment Factory is a leading China centrifugal fan supplier and axial fan manufacturer. We have our own production workshop and design team. If you cooperate with us, we can provide you with first-hand prices.
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