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Jump to: What are Air Amplifiers? | Why use it? | Advantages | Applications | How it Works? | Selection Guide | Special Air AmplifiersInstallation Guide


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Air Amplifiers Overview
 

Vent, exhaust, cool, dry, clean - with no moving parts!

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What are Air Amplifiers?

A simple, low cost way to move air, smoke, fumes, and light materials. Air Amplifiers utilize the coanda effect, a basic principle of fluidics, to create air motion in their surroundings. Using a  small amount of compressed air as their power source, Air Amplifiers pull in large volumes of surrounding air to produce high volume, high velocity outlet flows. Quiet, efficient Air Amplifiers will create output flows up to 25 times their consumption rate.


Why Use Air Amplifiers?

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Air Amplifiers have no moving parts, assuring maintenance-free operation. No electricity is required. Flow, vacuum and velocity are easy to control. Outlet flows are easily increased by opening the air gap. Supply air pressure can be regulated to decrease outlet flow.

Both the vacuum and discharge ends of the Air Amplifier can be ducted, making them ideal for drawing fresh air from another location, or moving smoke and fumes away.

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Adjustable Air Amplifiers are ducted to draw clean air for drying.
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A Model 120024 4" (102mm) Super Air Amplifier cools an engine during dynamometer testing.

Applications

Advantages

Advantages

  • Vent welding smoke
  • Cool hot parts
  • Dry wet parts
  • Clean machined parts
  • Distribute heat in molds/ovens
  • Ventilate confined areas
  • Dust collection
  • Exhaust tank fumes
Compared to Fans:
  • Compact, lightweight, portable
  • No electricity
  • No moving parts - no maintenace
  • Ends are easily ducted
  • Instant on/off
  • Variable force and flow
  • No RF interference
Compared to Venturis and Ejectors:
  • More air with lower compressed air consumption
  • Higher flow amplification
  • No internal obstructions
  • Meets OSHA pressure and noise requirements
  • Quiet

How Air Amplifiers Work

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Compressed air flows through the air inlet (1) into an annular chamber (2). It is then throttled through a small ring nozzle (3) at high velocity. This primary air stream adheres to the coanda profile (4), which directs it toward the outlet. A low pressure area is created at the center (5), inducing a high volume flow of surrounding air in to the primary airstream. The combined flow of primary and surrounding air exhausts from the Air Amplifier in a high volume, high velocity flow.


Air Amplifier Model Selection Guide

Air Amplifier Comparison

Efficiency Sound Level Mounting Flange Flow Adjustment Temperature Rating Corrosive Applications
Super Air Amplifier High Low Yes With Shims 275°F
(135°C)
No
Aluminium Adjustable Air Amplifier Medium Variable No Infinite
(No Shims)
275°F
(135°C)
No
Stainless Steel Adjustable Air Amplifier Medium Variable No Infinite
(No Shims)
400°F
(204°C)
Yes
High Temperature Air Amplifier High Low No With Shims 700°F
(374°C)
Yes

Special Air Amplifiers

EXAIR manufactures special Air Amplifiers suited to specific application requirements. An in-line heater added to the exhaust of a stainless steel Adjustable Air Amplifier produces a high volume, concentrated blast of hot air suitable for curing, drying, activating adhesives and heat-shrinking. High air amplification puts much more airflow through the heater coils than would be possible with an ordinary fan or blower. The hot airstream can be felt over 10' (3m) away!

The special Air Amplifier with grooved intake mounts to the suction tube of a dust collector and is held in place with set screws. The exhaust is easily ducted into the existing dust collection system or can be directed into a filter bag.

The Model 121021 High Temperature Air Amplifier was developed for moving hot air to surfaces requiring uniform heating while in a furnace or oven. Modeled after our Super Air Amplifier, the High Temperature Air Amplifier is the most efficient for pushing high volumes of hot air to points that typically remain cool. This special design is rated for environments up to 700°F (374°C) and its surface is protected from heat stress by a mil spec. coating process (developed for the aircraft industry), allowing easy disassembly for changing shims or cleaning.

Another stainless steel version for flange mounting was developed as a fan back-up for exhausting flue gases from a furnace. In the event of a power failure, this special Air Amplifier can quickly evacuate the fumes that could be harmful to workers close by.

This special stainless steel flange mount Air Amplifier was designed for exhausting hot flue gases from a furnace. This special stainless steel flange mount Air Amplifier was designed for exhausting hot flue gases from a furnace.

A concentrated blast of hot air is produced when a heater is added to a Stainless Steel Adjustable Air Amplifier. Special Air Amplifier with Grooves A Model 121021 High Temperature Air Amplifier directs hot air to a rotational mold cavity for uniform wall thickness of the plastic part.

A concentrated blast of hot air is produced when an in-line heater is added to a Model 6031 1-1/4" (32mm) Stainless Steel Adjustable Air Amplifier.

This special Air Amplifier acts as a "booster" for a maxed out dust collection system. The recessed groove on the suction side allows secure mounting to the existing dust collector intake tube.

A Model 121021 High Temperature Air Amplifier directs hot air to a rotational mold cavity for uniform wall thickness of the plastic part.

Installation and Maintenance Sheets

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Super Air Amplifier
Super Air Amplifier Shim Set
Adjustable Air Amplifier

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These files are in the Adobe Acrobat PDF format. The viewer is free and is available at www.adobe.com
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Compressed Air Australia

GPO Box 2792, Darwin,
Northern Territory 0801, Australia
Tel: +61 8 8983 3999
Fax: +61 8 8983 3900