Custom 6″ Super Air Wipe Solves Moisture Problem for Food Packaging Manufacturer

At EXAIR, we will never shy away from an application just because we don’t have something on the shelf ready to go from stock. We pride ourselves in the ability to provide a custom solution for an application that requires it. Just because you don’t see something in the catalog doesn’t mean we can’t make it happen! This was the case recently with a customer that manufactures food vacuum packaging machines.

A piece of the bag material is extruded, washed, and then filled with product. After the material is extruded it enters a water-cooling bath just before being inflated. The customer needed a solution for blowing off this excess water before opening the bag and packaging the finished products.

They designed a series of nozzles in a ring to provide a flow of compressed air to remove the residual water after the cooling bath. This worked for the most part, but was not effective at completely removing all of the moisture. After searching online, they came across the EXAIR Super Air Wipe. The Super Air Wipe was the exact tool they were looking for, providing a 360° laminar airflow around the full exterior of the bag. The only problem was that space was severely limited. To allow it to fit in their machine, we manufactured a special 6” Super Air Wipe with a reduced overall footprint and countersunk bolts to fit perfectly. Since air consumption was a concern, we installed a .001” shim to cut the total volume of compressed air needed in half!

EXAIR offers a line of Super Air Wipes available to ship same day from stock as well. The Super Air Wipe is available in aluminum construction in sizes ranging from 3/8” – 11” in diameters. All Super Air Wipes come with stainless steel hardware and stainless steel shims. Sizes up to 4” include a brass tee that supplies one half of the Super Air Wipe while a stainless steel wire braided hose supplies the other side. Sizes over 4” should be piped directly to each ¼ NPT compressed air inlet. In addition to aluminum construction, the Super Air Wipe is also available in 303 stainless steel for corrosive or high temperature applications. The Stainless Steel Super Air Wipe can withstand temperatures up to 800°F and is available in sizes from ½”-4” from stock.

If you’re processing any type of hose, wire, or extruded shapes that could benefit from installing a Super Air Wipe give us a call. With all sizes shipping from stock on an order received by 2:00 pm EDT we can have one to you as early as tomorrow!

Tyler Daniel
Application Engineer
E-mail: TylerDaniel@EXAIR.com
Twitter: @EXAIR_TD

Daniel Bernoulli, Entraining EXAIR Products

Daniel Bernoulli was born February 8, 1700 in Groningen in the Netherlands and was the son of Johann Bernoulli an early developer of calculus. It is believed that Daniel did not have a good relationship with his father. This mainly stemmed from the both of them entering the same scientific contest at the University of Paris. The two tied and his father Johann took exception to being compared to his son as “equal” and could not accept the shame and banned Daniel from his home. Daniel tried to reconcile their difference but his father carried this grudge to his death.

Earlier in Daniels life his father convinced Daniel to study business as there was no income incentive to study mathematics but against his will Daniel did choose the study of business. His father then convinced Daniel to study medicine but Daniel still wanted to study mathematics and agreed to study medicine under the condition that his dad teach him mathematics privately. Daniel completed his bachelors degree at the age of 15 and his masters degree when he was 17. Daniel then went on to study medicine and received his PhD in anatomy and botany from the Universities of Basel, Heidelberg and Strasbourg.

Daniel Bernoulli was very accomplished but mostly known for Bernoulli’s principle. Bernoulli’s principle is the relationship between fluid speed and pressure. An increase in the speed of a fluid will occur simultaneously with a decrease in the fluid’s pressure or potential energy. The Venturi effect, published in 1797 by Giovanni Venturi, applies Bernoulli’s principle to a fluid that flows through a tube with a constriction in it. The Venturi tube provides a handy method for mixing fluids or gases, and is popular in carburetors and atomizers, which use the low pressure region generated at the constriction to pull the liquid into the gas flow. It also offers a particularly clear example of the Bernoulli principle.

For example, above is how a Super Air Wipe works. Compressed air flows through an inlet (1) of the Air Wipe 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 down the angled surface of the Air Wipe. A low pressure area is created at the center (5) inducing a high volume flow of surrounding air into the primary airstream. As the airflow leaves the Air Wipe, it creates a conical 360° ring of air that attaches itself to the surface of the material running through it (6), uniformly wiping the entire surface with the high velocity airflow.

EXAIR incorporates the Bernoulli Principle with our engineered products which entrain air such as our Super Air Knives, Super Air Wipes, Air Amplifiers and Static Eliminating products to name a few. We have several Applications Engineers that will appreciate your call to discuss our products. If you have an application or question please call 800.903.9247 or visit us on our website www,EXAIR,com and let us help you.

Eric Kuhnash
Application Engineer
E-mail: EricKuhnash@exair.com
Twitter: @EXAIR_EK

EXAIR Super Air Wipes: Conical Blow-off for Cable, Pipe, Hose, Extrusions

EXAIR manufactures two types of Air Wipes; the Standard Air Wipe™ and the Super Air Wipe™.  They are designed to blow an airstream in a concentric pattern around the outside of pipes, cables, extruded shapes, hoses and much more.  In this blog, I will focus on the features and benefits of the Super Air Wipes.  Their unique design, variety of sizes, and construction definitely makes this product “Super”.

The Super Air Wipes are used to blow-off, cool, clean and dry products.  The air is blown in a conical 360o pattern completely around the outside of parts.  EXAIR engineered a Coanda profile to entrain large amounts of ambient air.  This will increase efficiency by using less compressed air and still generate a large force to perform the task.  The Coanda profile is set at a 30o angle to increase the contact area and keep debris away from the portion of the product that has already been cleaned.

Simply open the two halves, and clamp them around your product…no threading!

The construction of the Super Air Wipes is also unique.  It has a split design to allow for an opening to place around the part; so, you will not have to break or rethread the material.  They also use stainless-steel screws and stainless-steel shims.  For diameters up to 4” (102mm), they will come with a braided stainless-steel hose to supply compressed air to both halves.  The stainless-steel components give the units better corrosion resistance, higher temperature ratings, and more durability.

EXAIR manufactures the Super Air Wipes with two different body materials, aluminum and 303 stainless steel.  EXAIR stocks the aluminum models with inner diameters from 3/8” (10 mm) for wire and cables up to 11” (279mm) for large pipes and hoses.  The aluminum models have a temperature range good to 400oF (204oC).  We also stock the stainless-steel models from ½” (13mm) to 4” (102mm) inner diameters, and they have a temperature range up to 800oF (427oC).  If you require different diameters or materials, don’t be afraid to ask.  EXAIR also makes specials.

Super Air Wipe Kit

We also offer options with the Super Air Wipes.  We have kits to help get the most out of the Air Wipes.  A kit will include the Super Air Wipe, a filter, a regulator and a shim set.  The filter will remove bulk liquids and debris from the compressed air to keep the performance optimal.  The Regulator is used to control the force.  This helps to not over-use the amount of compressed air required for the job.  With a regulator, you can make fine adjustments to get the proper amount of air.  For coarse adjustments, you can add shims to increase the air flow and force.  They are easy to install on the Super Air Wipes to allow for applications to have more cooling, faster drying, and better removal for tough debris.  For cleanliness and control, the Super Air Wipe Kits would be recommended for your application.

Here are some additional advantages in using the EXAIR Super Air Wipes that I did not cover.  They are OSHA safe in dead-end pressure and noise exposure.  So, they are quiet.  We placed pre-tapped holes on each half of the bodies for easy mounting with brackets or attachments.  They do not have any moving parts or require any electricity to operate.  The non-contact wiping actions that the Super Air Wipe can provide helps to support cleaning items without affecting the surface finish.  Also, you won’t have to worry about replacing cloths or brushes that will slow production and wear over time.

With the creation of the EXAIR Super Air Wipes, uniform cleaning, cooling, and blowing around the outside of parts is a simple task.  You don’t have to worry about a variety of nozzles to target the circumference, or a fabricated blow-off device that will waste air and take much time out of your day.  A simple purchase of the Super Air Wipe is all you need.  You can order them from our website at www.EXAIR.com or call us at 800-903-9247.  If you need help in selecting the proper product for your application, you can contact an Application Engineer at EXAIR for help.

John Ball
Application Engineer
Email: johnball@exair.com
Twitter: @EXAIR_jb

360° Air Wipe Comparison for Extrusion, Hose, Cable, Pipe and Wire Blowoff or Cooling

When it comes to blowing off extrusions, cables, pipe, tubing, hose, or wire, the EXAIR Super Air Wipe is an ideal product that often stands alone in this field. From time to time I will receive a call asking about a block style blowoff for wire or cabling, maybe even small extrusion, and the Super Air Wipe is always there to provide a true 360° blowoff compared to what the customer is used to.

See, the block style blowoffs are similar to the SAW in they both offer a clamshell design that will open and close into place around the product to prevent the user from having to “thread the needle”.  Also, they both operate off compressed air. The means by which they deliver the air is where the stark contrast in performance begins.

First, let us take a look at how these block style blowoffs deliver the air to the product being blown off. Generally, inside of these, there are a couple holes on each half of the block that are drilled at an angle to deliver the air onto the surface of the product. These block style products have to be kept fairly close in diameter to the product so that the air contacts the surfaces and they are for the most part offered in smaller sizes only.

Now, how does the Super Air Wipe deliver the air to the product being blown off?  The air enters (1) into an internal chamber that fills (2) and then dispurses through a continuous gap (3) on each half of the wipe that is set by a shim. The shim can be interchanged with different thicknesses to give a course adjustment to the volumetric flow of air. The air then follows the Coanda profile (4) of the Super Air Wipe to maximize entrained air (5) and exits at a 60° included angle (6) to impact the surface of the part at a full 360°.

Stock Super Air Wipe Product OfferingBlock Style air wipes also have a tendency to operate very loudly, often exceeding 90 dBA and more. This will affects personnel directly and can also affect their communication when attending to a processing line.  Super Air Wipes operate at 82 dBA with 5″ and smaller diameters. Up to 89 dBA for diameterss from 6″-11″.

The Super Air Wipe is available in eleven sizes from stock in aluminum (up to 11″ dia.) while the stainless steel configurations are available in five sizes from stock (up to 4″ dia.).  If aluminum or stainless steel don’t fit the requirements of an application, custom sizes and materials are always available with short lead times.

Tight-fitting locations are ideal for a Super Air Wipe install.

If you notice that the block style air blowoff is leaving streaks or maybe the physical space requirements of the block are too much to fit into your production line, please contact an Application Engineer and let us help you determine which Super Air Wipe is going to be right for your needs.

Brian Farno
Application Engineer
BrianFarno@EXAIR.com
@EXAIR_BF