Exair,Super,Air,Knife

Exair Super Air Knife™


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  Tech Sales Co. - EXAIR Product
  Super Air Knife

Cabinet,Cooler,Applications
Super Air Knife™

Quiet, hard-hitting curtain of air for blowoff, cleaning, drying and cooling.

Exair,Super,Air,Knife

Surprisingly Quiet!

Reduced Air Consumption!

Uniform Airflow!

Amplification of 40:1


Bottles exiting a washer are blown dry by the Super Air Knives prior to labeling.
What is the Super Air Knife?

EXAIR's Super Air Knife is a new generation of air knife that dramatically reduces compressed air usage and noise when compared to other blowoffs.

The Super Air Knife offers a more efficient way to clean dry or cool parts, webs or conveyors.  It delivers a balanced sheet of laminar airflow across the entire length with hard-hitting force.

Noisy blowoffs become a whisper when replaced with this new, compact design.  Even at high pressures of 80 PSIG (5.5 BAR), sound level is surprisingly quiet at 70 dBA for most applications! 

Amplification rations (entrained air to compressed air) of 40:1 are produced. 

The Super Air Knife meets OSHA dead-ended pressure and noise requirements.






Applications

Part drying after wash
Sheet cleaning in strip mills
Conveyor cleaning
Part or component cooling
Web drying or cleaning
Environmental separation
Pre-paint blowoff

Advantages

Quiet - 70dBA for most applications Compact, rugged easy to install
Minimal air consumption Recessed hardware for easy mounting
40:1 air amplification Maintenance free 
Balanced airflow across entire length Special lengths available
No moving parts Unlimited system lengths of airflow
Aluminum or stainless steel Variable force and flow
Compressed air inlets on ends and bottom Stock lengths to 48" (122cm) in aluminum and 42" (107cm) in stainless steel


Blowoff

The Super Air Knife is ideal for blowing off chips, dirt or water from parts, webs or conveyors. It delivers a balanced sheet of air that has the same force across the entire length. There are no interruptions or "dead spots" which mean all surfaces are dried or cleaned. The Super Air Knife is available in aluminum or stainless steel for corrosive, and high temperature applications.

Drying

The laminar airflow of the Super Air Knife is perfect for removing moisture prior to packaging, painting, labeling, bar coding and assembly.  Common applications include drying parts, rolled steel, circuit boards, webs, bottles, cans and more.  Velocity is easily adjusted from a "blast" to a "breeze" with a pressure regulator.




Cooling

Great volumes of airflow can be generated in very tight spaces due the compact size of the Super Air Knife. Flow and force are easily controlled with a pressure regulator, allowing fast or gradual cooling.  Shims can be installed if additional hard-hitting velocity is required.

How the Super Air Knife Works

Compressed air flows through the inlet (1) into the plenum chamber of the Super Air Knife. Multiple channels inside direct the flow to a precise, slotted orifice. As the primary airflow exits the thin slotted nozzle (2), it creates a uniform sheet of air across the entire length that immediately pulls in surrounding room air (3). Velocity loss is minimized by entraining the room air into the primary airstream. The result is a well defined sheet of laminar airflow with hard-hitting force and minimal wind shear.


Super Air Knife (top), Standard Air Knife (middle) and drilled pipe (bottom).
Compare Blowoffs

Type of Blowoff

Air
Consumption

Sound
Level

Model #

Description

SCFM SLPM dBA
110018 18" (46cm)
Super Air Knife
52 1329 71
2018 18" (46cm)
Std. Air Knife
61 2234 87
N/A 18" (46cm)
drilled pipe*
141 3996 92

* drilled pipe has (37) 1/16" (1.59mm) holes on 0.5" (13mm) centers


The Super Air Knife uses 63% less air and is 
11 times quieter than drilled pipe!

 
Why "Super"?
Most plants try to limit compressed air usage and eliminate blowoffs that exceed OSHA noise level requirements. The new Super Air Knife has been engineered to deliver a uniform, high velocity, high volume sheet of air with low noise and minimal air consumption.  As shown by the chart, it's easy to see why the Super Air Knife is the best choice for blowoff, cooling and drying applications. The Super Air Knife reduces compressed air usage by 15% when compared to EXAIR's Standard Air Knife or by 63% when compared to a drilled pipe! Noise level of the Super Air Knife is 6 times quieter than the Standard Air Knife and 11 times quieter than the drilled pipe!
Added Features
Compressed air inlets are provided on each end and the bottom of the Super Air Knife for easy mounting.
Shims can be installed easily if additional hard-hitting velocity is required.
Multiple Super Air Knives can be mounted end-to-end without "dead spots".
Stainless Steel models are available for corrosive locations and for temperatures up to 1200°F (650°C).
Meets OSHA maximum dead-ended pressure and noise requirements.

Super Air Knife Specifications

The Super Air Knife is available in standard lengths of 3" 6", 12", 18", 24", 30", 36", 42" and 48" (8, 15, 30, 46, 61, 76 ,91, 107 and 122cm) in aluminum, and lengths of 3", 6", 12", 18", 24", 30", 36" and 42" (8, 15, 30, 46, 61, 76, 91 and 107cm) in stainless steel.  Special lengths and unlimited system lengths are available. Any number of Super Air Knives may be installed across a given area.

Filtration:
The use of clean air is essential. Kits include an automatic drain filter with a 5 micron filter element that is sized properly for flow. The use of clean air is essential. Kits include an automatic drain filter with a 5 micron filter element that is sized properly for flow. The use of clean air is essential. Kits include an automatic drain filter with a 5 micron filter element that is sized properly for flow.

Materials of Construction:
The Super Air Knife is available in either aluminum or stainless steel construction.

Mounting:
The Super Air Knife can be supported by the compressed air pipe. Tapped holes (1/4-20) on the bottom are also provided.

Regulation:
A pressure regulator on the compressed air supply provides infinite control of flow, force and air consumption. Kits include a pressure regulator that is sized properly for flow.

Shim Sets:
The compressed air exhausts through a gap which is set with a shim positioned between the cap and the body of the Super Air Knife. Force and flow through the Super Air Knife may be easily increased by adding shims to open the gap. Kits include a shim set (three additional shims).


Dimensions - Aluminum Super Air Knife

Dimensions - Stainless Steel Super Air Knife



Exair Super Air Knife™



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