Air Amplifier or Air Movers From Nex Flow and Trade

Air Amplifier or Air Movers From Nex Flow and Trade

Air amplifier or "air movers" from Nex Flow Air Products Corp., are a simple, inexpensive devices with virtually no maintenance that can convey fumes, smoke, lightweight materials and move a high volume of air for cooling, blowoff and drying applications. They use the "coanda effect" which entrains a large amount of surrounding air using only a small amount od compressed air. The effect is an amplification of up to 17 times the airflow or more (depending on the size) with reduced noise levels. Using only compressed air, the output flow and vacumm is easily controlled by adjusting or opening the air gap and/or inlet pressure. Either end of the air amplifier may be ducted to address all kinds of applications from bringing in fresh air into an area to removing nasty fumes. Be wary of unrealistic or unsubstantiated amplification ratios claimed by some companies.

Amplifier Features:

No moving parts

More compact, simple, lightweight and portable

Driven by air, not electricity

Replace fans, used for blow-off, cleaning, drying, cooling and conveying

Air Amplifier Benefits:

Longer life in difficult environments than competative models

Lower compressed air consumption than ejectors or venturi

Maintenance free with output easily controlled

Safe to use

Advantages Over Fans:

Compact design, simple, lightweight and portable

Driven by air, not electricity for safety

No moving parts, safer and maintenance free

Each end can be dusted for light conveying applications

Types:

Standard "Fixed Air" Amplifier is made of a zinc die cast system and is solid and performs as well or better than many supposedly patented designs when used in similiar applications. The gap can be adjusted by using shims. Five sizes are available.

Adjustable Air Amplifier is made of anodized aluminum or stainless steel for high temperature or food applications. The customer can set the gap and lock it in place using a lock ring. Three sizes are available.

How It Works

A small amount of compressed air enters the annular chamber at point (A) that is then throttled through a small ring nozzle at high velocity and into the inside of the amplifier over a coanda profile. The compressed air stream clings to the coanda profile as it enters the inside walls of the amplifier and thereby creating a vacuum that induces the outside air at point (B) converting the pressure into amplified airflow. The amplified of airflow leaves at the exit at point (C). Airflow is further amplified downstream at point (D) by entraining additional air from the surroundings at the exit.

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