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Air Amplifiers

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

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.

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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How Air Amplifiers Work Model Comparison
 

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Air Amplifier Comparison

  Efficiency Sound
Level
Mounting
Flange
Flow
Adjustment
Temp.
Rating
Corrosive
Applications
Super Air Amplifier High Low Yes With Shims 275°F
(135°C)
No
Aluminum 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
(135°C)
Yes
High Temperature
Air Amplifier
High Low No With Shims 700°F
(374°C)
Yes
Special Air Amplifiers

Compressed air flows through the inlet (1) into an annular chamber (2). It is then throttled through a small ring nozzle (3) at high velocity. This primary airstream 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 into the primary airstream. The combined flow of primary and surrounding air exhausts from the Air Amplifier in a high volume, high velocity flow.

 

EXAIR manufactures special Air Amplifiers suited to specific application requirements.  The Model 121021 High Temperature Air Amplifier (shown on the right) 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.
 
Applications   Advantages Compared to
rd_ball.gif (946 bytes) Vent welding smoke  

Fans

   

Venturis and Ejectors

rd_ball.gif (946 bytes) Cool hot parts   rd_ball.gif (946 bytes) Compact, lightweight, portable   rd_ball.gif (946 bytes) More airflow with less consumption
rd_ball.gif (946 bytes) Dry wet parts   rd_ball.gif (946 bytes) No electricity   rd_ball.gif (946 bytes) Higher flow amplification
rd_ball.gif (946 bytes) Clean machined parts   rd_ball.gif (946 bytes) No moving parts - no maintenance   rd_ball.gif (946 bytes) No internal obstructions
rd_ball.gif (946 bytes) Distribute heat in molds/ovens   rd_ball.gif (946 bytes) Ends are easily ducted   rd_ball.gif (946 bytes) Meets OSHA pressure/noise requirements
rd_ball.gif (946 bytes) Ventilate confined areas   rd_ball.gif (946 bytes) Instant on/off   rd_ball.gif (946 bytes) Quiet
rd_ball.gif (946 bytes) Exhaust tank fumes   rd_ball.gif (946 bytes) Variable force and flow      
 

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