EXAIR Super Air Amplifiers – Circulate, Blow, Dry, Cool, Vent

Super Air Amplifier

EXAIR manufactures a volume-type amplifier called the Super Air Amplifier. Not to be confused with its cousin, the pressure-type amplifier which increases air pressure, these devices increase the volume of air. This is a great benefit for circulating, cooling, blowing, drying and transferring materials like smoke fumes or lightweight items. With a range of applications, the EXAIR Super Air Amplifiers can be a simple solution for your company.

Super Air Amplifier – flow region

Why an EXAIR Super Air Amplifier? Like a fan, they are designed to move air. But fans use motors and blades to push the air toward the target. The fan blades “slap” the air which creates turbulent air flows and loud noises. The Super Air Amplifiers does not have any blades or motors to move the air. It just uses a Coanda profile and a patented shim to create a low pressure to draw in the air. With physics, it is much easier to pull than it is to push. The method in pulling air through the Super Air Amplifier makes a more efficient, uniform, and quiet operation to blow air.

How It Works

To expand, Coanda was named after a Romanian aerodynamic pioneer, Henri Coanda where he found a fluid flow phenomenon. He stated that “a jet of fluid emerging from an orifice to follow an adjacent flat or curved surface and to entrain fluid from the surroundings so that a region of lower pressure develops” (1). Since air is a fluid, it will react in the same way. The EXAIR Super Air Amplifiers create a high velocity air stream along an engineered profile. So, as the air “hugs” the profile, a low pressure is created which will draw in ambient air. The ratio between the volume of air produced compared to the volume of compressed air needed is called the amplification ratio. The higher the ratio, the more efficient the blowing device is. With the EXAIR Super Air Amplifiers, we can reach amplification ratios up to 25 to 1.

Super Air Amplifier Family

EXAIR manufactures and stocks five different sizes ranging from ¾” (19mm) up to 8” (203mm) in diameter. One of the unique features with the Super Air Amplifiers is that the inlet and outlet can be ducted for remote positioning. They are very compact and can fit into tight places. They do not have any moving parts to wear, or need electricity to run; or require any maintenance. They only need clean compressed air to work. One of the unique features of the EXAIR Super Air Amplifier is the patented shim which optimizes the low-pressure to draw in more ambient air. For extracting welding smoke, increasing cooling capacities, and moving material from point A to point B; the more air that can be moved, the better the performance. And the patented shim inside the EXAIR Super Air Amplifiers provides that. As an added bonus, they are OSHA compliant for safety and meet the standards for noise level and dead-end pressure.

Patented Air Amplifier Shims

EXAIR offers the Super Air Amplifiers in kits for a more complete system. The kit will include a filter separator, a pressure regulator and a Shim Set. The filter can remove debris and water from the compressed air line to keep the Super Air Amplifier and your product clean. The regulator is used to make “fine” adjustments to the blowing volume while the Shim Set is used as a “coarse” adjustment. The Shim Set includes different thicknesses of shims to set the gap. The Super Air Amplifiers come standard with a 0.003” (0.08mm) thick shim for the sizes ¾” (19mm) up to 4” (102mm), and a 0.009” (0.23mm) thick shim for the 8” (203mm) size. The Shim Set will include (1) 0.006” (0.15mm) and (1) 0.009” (0.23mm) shim for the models 120220 through 120224 or (1) 0.015” (0.39mm) shim for the model 120228. EXAIR sells these kits as one model number for simple ordering and for proper sizing of the accessories to not hinder the performance of the Super Air Amplifiers.

120224DX

To optimize the system even more, EXAIR also offers a Deluxe Kit for the Super Air Amplifier models. This will include the accessories in the kit above, plus an Electronic Flow Control, or EFC. This exclusive instrument uses a photoelectric eye to start a timing sequence to control a solenoid valve. So, when a part is not in front of the Super Air Amplifier, the compressed air is turned off. This will save you even more money and maximize your efficiency to only blow air when needed. They can be ordered with the kits by placing a “DX” at the end of the model number, such as 120224DX.

With the today’s cost to make compressed air, it is important to use it as efficiently as possible. The EXAIR Super Air Amplifiers have the ability to give effective blowing to remove debris, dry parts, transport material, or cool objects without using a large amount of compressed air. EXAIR has the Super Air Amplifiers in stock and as always, EXAIR offers a 30-day unconditional guarantee for our customers in the U.S. and Canada to try them out. If you have any questions about the Super Air Amplifiers or if you would like to discuss your application, an Application Engineer at EXAIR will be happy to help you.

 

John Ball
Application Engineer

Email: johnball@exair.com
Twitter: @EXAIR_jb

 

(1) Note: Coanda effect by Wikipedia.org https://en.wikipedia.org/wiki/Coand%C4%83_effect

Promos, Freebies, and Some Amazing Products

Like many companies, here at EXAIR we generally always have a promotional offering.  These rotate throughout the months and this month is no different.  The current offering involves the EXAIR Cold Gun Aircoolant Systems.

These systems help to reduce cutting fluid use, increase production speeds, increase tool life, and has helped more customers than I know.  One customer in particular is a maintenance worker from a welded tube manufacturer.  This facility had very little amount of downtime permitted due to the high efficiency and high volume of orders.  When a machine went down the maintenance team were in like a trauma team to determine the cause of failure and get it remedied to get the line back up and running. One of the biggest problems they would have is when they would have to dry machine a quick part to get the machine back up and running, this would either ruin tools or they would have to slow down the machining time to get the surface finish and dimensions they truly needed.  After talking with us the team ordered a Single Point Cold Gun Aircoolant System as these parts were generally smaller shafts or machine dogs.

They received the system in and sure enough a machine went down.  The crew went to work and once the part needed was found they got to work on their lathe trying to make a new piece.  The Cold Gun held itself straight to the headstock thanks to the integrated magnet and the flexible single point hose kit routed the cold air straight to the cutting point.  They didn’t have to fill up the liquid tank or setup the mist system on the lathe, they simply turned on the compressed air and let the lathe do the work.  They were able to take what had recently been around a three hour machine job with heavy wear on tooling to a two hour job, no finish pass was needed on the part, and their tools weren’t completely spent by the end of the job.

They got the part back into the machine, made adjustments, and then went to work getting the machine back into production.

Right now, if you would like to try out a Cold Gun Aircoolant System you can order before 12/31/2019 and use the link to order through our promotion in order to receive a free Dual Point Hose Kit with your qualified purchase.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF

About Compressed Air Dryers – What Are They and Why Use Them

All atmospheric air contains some amount of water vapor.  When air is then cooled to saturation point, the vapor will begin to condense into liquid water. The saturation point is the condition where the the air can hold no more water vapor. The temperature at which this occurs is knows as the dew point.

When ambient air is compressed, heat is generated and the air becomes warmer. In industrial compressed air systems, the air is then routed to an aftercooler, and condensation  begins to take place. To remove the condensation, the air then goes into separator which traps the liquid water. The air leaving the aftercooler is typically saturated at the temperature of the discharge, and any additional cooling that occurs as the air is piped further downstream will cause more liquid to condense out of the air. To address this condensation, compressed air dryers are used.

It is important to dry the air and prevent condensation in the air. Many usages of the compressed air are impacted by liquid water being present. Rust and corrosion can occur in the compressed air piping, leading to scale and contamination at point -of -use processes. Processes such as drying operations and painting would see lower quality if water was deposited onto the parts.

dryers.png

There are many types of dryers – (see recent blogs for more information)

  • Refrigerant Dryer – most commonly used type, air is cooled in an air-to-refrigerant heat exchanger.
  • Regenerative-Desiccant Type – use a porous desiccant that adsorbs (adsorb means the moisture adheres to the desiccant, the desiccant does not change, and the moisture can then be driven off during a regeneration process).
  • Deliquescent Type – use a hygroscopic desiccant medium that absorbs (as opposed to adsorbs) moisture. The desiccant is dissolved into the liquid that is drawn out. Desiccant is used up, and needs to be replaced periodically.
  • Heat of Compression Type – are regenerative desiccant dryers that use the heat generated during compression to accomplish the desiccant regeneration.
  • Membrane Type– use special membranes that allow the water vapor to pass through faster than the dry air, reducing the amount water vapor in air stream.

The air should not be dried any more than is needed for the most stringent application, to reduce the costs associated with the drying process. A pressure dew point of 35°F to 38°F (1.7°C to 3.3°C) often is adequate for many industrial applications.  Lower dew points result in higher operating costs.

If you have questions about compressed air systems and dryers or any of the 15 different EXAIR Intelligent Compressed Air® Product lines, feel free to contact EXAIR and myself or any of our Application Engineers can help you determine the best solution.

Brian Bergmann
Application Engineer
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Atomizing Spray Nozzles from EXAIR

Do you ever need to spray a liquid?  If so lets look at two of EXAIR’s Atomizing Spray Nozzles or ASN for short.  The first model we will discuss is the AD1010SS Internal Mix Deflected Flat Fan Pattern.

AD1010ss_pr_559w
AD1010SS Internal Mix Deflected Flat Fan Pattern

To begin with all EXAIR ASN’s are made from SS for durability and liquid compatibility.  As its name implies it creates a flat fan pattern that exit’s the nozzle perpendicular to the air & liquid inlets as shown above.  This unique design lends itself nicely to applications with space constraints.  The AD1010SS is the ideal choice for coating the inside of enclosures or ductwork.  It is compatible with liquids up to 300 centipoise and the air and liquid are mixed in the air cap.  The AD1010SS is designed for pressure fed applications not requiring independent air and liquid control.  What is meant by that statement is that if you vary either the air or liquid pressures you change the spray pattern and volume.  See the chart below for clarification on pressures, volumes and spray patterns.

AD1010SS Pressures
AD1010SS Chart

Next we will look at EXAIR model AT1010SS internal mix 360° hollow circular pattern ASN.

AT360circpat_pr_300
AT1010SS 360° Circular Spray Pattern Nozzle Can Be Used To Coat Inside Diameters Or Cover A Broad Area Of Over 4′

The AT1010SS internal mix 360° nozzle is designed for applications where the spray pattern must be oriented away from the nozzle in all directions.  360° nozzles are ideal where a smooth, even coating is needed on the ID of a pipe or similar ductwork.  It is compatible with liquids up to 300 centipoise and the air and liquid are mixed in the air cap.  The AT1010SS is designed for pressure fed applications not requiring independent air and liquid control.  As above if you vary either the air or liquid pressures you change the spray pattern and volume.  See the chart below for clarification on pressures, volumes and spray patterns. They also work great for operations where a mist over a broad area is needed, such as dust suppression, humidification and cooling.  See the chart below for clarification on pressures, volumes and spray patterns.

AT1010SS Chart
AT1010SS Chart

If you would like to discuss EXAIR’s Atomizing Spray Nozzles or any EXAIR compressed air product, I would enjoy hearing from you…give me a call.

Steve Harrison
Application Engineer

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