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Unique solutions for your unique application

Eliminate the mess of mist coolants with Frost-Free Cold Air Guns

The Frost Free Cold Air Gun eliminates the mess associated with condensation and frost arising from continuous use of a Cold Air Gun. A must–have for sensitive applications such as:

  1. Cutting, drilling or machining of paper products, wood products, fabrics or any product that is sensitive to water
  2. Provide high-speed drying or cooling

Cold Air Guns use vortex tube technology and filtered compressed air to produce sub-freezing air as low as -30 deg F for numerous industrial spot cooling applications. With no moving parts to wear out, Cold Air Guns require no electricity, just a compressed air source.

Cold Air Guns are most often used for cooling of metal parts, in the machining and repair of metals, plastics, wood, ceramics and other materials. Cold air machining outperforms mist coolants and substantially increase tool life and feed rates on dry machining operations. The effective cooling from a Cold Air Gun can eliminate heat-related parts growth while improving parts tolerance and surface finish quality. Cold Air Guns have adjustable temperature and flow settings; and some models have a frost free nozzle to eliminate mess from frost and condensation. The air consumption range is from 15 SCFM to 35 SCFM.

Benefits

  1. Increase dry machining speeds up to 36%
  2. Extend tool life by 50%
  3. Eliminates the mess, expense and safety concerns of using mist coolants
  4. Reduce waiting or normalization time by cooling parts faster
  5. Eliminate the potential for burning and scorching
  6. Avoid secondary parts cleaning after machining
  7. Reduce grinding wheel loading caused by overheating
  8. Airflow clears sawdust, shavings and dirt away from surface

Features

  1. Creates cold air up to 100 F deg (+ 56 C) below the inlet compressed air temperature
  2. Quiet operation; meets OSHA noise specifications
  3. Adjustable temperature and flow rate
  4. Highly reliable with no moving parts
  5. Low pressure outlet air
  6. Uses only compressed air – no Freon
  7. System includes a magnetic base and a 5 micron auto-drain compressed air filter
  8. Magnetic base allows for easy, close in positioning and easy portability
  9. Frost free nozzle eliminates mess from frost and condensation

Frost-Free Cold Air Gun Specifications

SPECIFICATION 610 610-1 620 620-1 630 630-1
Cooling Capacity (BTU/hr) 900 900 1500 1500 2500 2500
Minimum Outlet Temperature (deg F) -10 -10 10 10 30 30
Compressed Air Pressure (psig) 80 - 100 80 - 100 80 - 100 80 - 100 80 - 100 80 - 100
Air Consumption @ 100 psig (scfm) 15 15 25 25 35 35
Inlet Size 1/4" NPT 1/4" NPT 1/4" NPT 1/4" NPT 1/4" NPT 1/4" NPT
Outlet Air Flow Rate (scfm) 2 - 15 2 - 15 8 - 25 8 - 25 18 - 35 18 - 35
Recommended Filter Size 25 scfm 25 scfm 25 scfm 25 scfm 35 scfm 35 scfm
Recommended Filter 7015-24A 7015-24A 7015-24A 7015-24A 7015-24A 7015-24A
System or Gun Only? System Gun Only System Gun Only System Gun Only
Dimensions (inches)
Overall Length 18 5/8 18 5/8 18 5/8 18 5/8 18 5/8 18 5/8
Diameter 1 3/4 1 3/4 1 3/4 1 3/4 1 3/4 1 3/4
Nozzle Length 8 8 8 8 8 8
Flexible Nozzles Diameter 1 1 1 1 1 1
Outlet Diameter (ID) 3/8 3/8 3/8 3/8 3/8 3/8
Magnetic Base Height 4 1/8 - 4 1/8 - 4 1/8 -
Weight (lbs) 3.0 1.0 3.0 1.0 3.0 1.0
Supply Hose
Diameter (inches) 3/8 3/8 3/8 3/8 1/2 1/2
Maximum Recommended Distance (feet) 25 25 15 15 30 30

Product Instructions

Case Studies

Surefire Solutions with Vortec Air Cooling
Company Overview Surefire Fabrication, a family-owned fabrication business located in Penryn, California, machines metal, plastic, and wood components for a variety of industries, including government and commercial customers. As a custom fabricator, the company often uses aluminum, wood, and various other materials to design and bring new ideas to life for their customers.

The Challenge When Glen Spaulding, the owner of Surefire Fabrication, called Vortec, he was looking for a solution to cool aluminum while cutting without using liquid coolant. Surefire currently uses an Avid CNC PRO60120 router that has a 5’ x 10’ table with a 3hp spindle and VFD to machine many of the parts that they manufacture. Surefire uses two ¾” thick MDF spoil boards, that they mill flat, to better support the workpieces that they machine. Liquid coolant cannot be used with the MDF spoil boards as it contaminates them and makes a huge mess. When Surefire tried to machine aluminum, the soft, malleable nature of the product made it bind with the cutting tools resulting in rough surface finishes and damaged tools. After machining, the aluminum parts are then powder coated and laser engraved, making a smooth surface finish essential.

The Solution After an in-depth discussion between Glen and Vortec’s application engineers, the 611 Frost Free Cold Air Gun was agreed to be the best result for Surefire’s Application. The company’s 3hp air compressor with a 60-gallon tank would allow for the cold air gun’s operation. The frost-free characteristics of the 611 were essential to Glen because he did not want any condensation dripping from the Cold Air Gun’s flexible nozzle onto the workpieces or on the MDF spoil board. The air consumption of the 611 fits well with their compressed air source, and the cooling capacity of 900 btuh and temperature adjustability matched their needs when machining the 3.1mm (1/8”) thick aluminum sheets.

The Result Glen made a steel bracket to bolt to the aluminum plate on the Avid’s spindle so that the 611’s magnetic support base could be used to quickly attach the Frost Free Cold Air Gun close to the cutting tool. The Avid machine is equipped with a vacuum system to carry away the chips. The 611’s flexible nozzle extends through the brush that surrounds the vacuum pickup head so that the cold air is directed close to the cutting tool. Glen reports that the 611 works great when cutting aluminum and that the aluminum no longer sticks to the cutting tools, resulting in improved surface finishes.

How the Frost-Free Cold Air Gun Works Frost-Free Cold Air Guns use vortex tube technology and filtered compressed air to produce sub-freezing air as low as -10 deg F for numerous industrial spot cooling applications. With no moving parts to wear out, Frost-Free Cold Air Guns require no electricity at the target, just a source of clean and dry compressed air. The Frost-Free Cold Air Gun features a double insulated flexible cold air outlet that eliminates condensation and frost from forming on the nozzle.

Frost-Free Cold Air Guns are most often used for cooling of metal parts, in the machining and repair of metals, plastics, wood, ceramics, and other materials. Cold air machining outperforms mist coolants and substantially increases tool life and feed rates on dry machining operations. The active cooling from a Frost-Free Cold Air Gun eliminates heat-related parts growth while improving parts tolerance and surface finish quality. The 611 Frost-Free Cold Air Gun uses only 15 scfm of compressed air while producing up to 900 btuh of cooling, and temperatures as low as -10 deg F.

Case Studies

Fast and Frost-Free Cooling for Automotive Parts Manufacturer
Company Overview A plastic extrusion company manufactures complex co-extrusions for the automotive industry. Co-extrusion is an extrusion process to manufacture a product made up of two textures. The materials are extruded through a single die and then merge into one part before cooling. The benefit of co-extrusion is that each material maintains specific characteristic properties and combines it into one structure with multiple desired characteristics.

The Challenge Throughout the production process, multiple variations of the co-extruded products move at a swift speed of 12 meters per minute, or approximately 8 inches per second. As the products are extruded, their temperature reaches 200°F. For the products to proceed to the next assembly stages of cutting, inspection and packaging, their temperature needs to decrease to 90°F or less. Due to the quick pace of production, the products needed to be cooled quickly. The company’s solution was to cool the extrusions in a water bath. After trying this method, they found that traces of water that remained on the extrusions created quality related problems due to water spots.

The Solution The company needed to find a better cooling solution that didn’t involve water cooling but still effectively cooled the product quickly. They turned to air cooling solutions by Vortec. After studying their application, a Vortec engineer suggested using six model 621 Frost-Free Cold Air Guns along the production line to cool the extrusions from 200°F to 90°F. The Frost-Free model was chosen in order to avoid water droplets on the product due to condensation.

The Result As the Frost-Free Cold Air Guns were installed in the production line, it became apparent that they were successful in cooling the product. However, initially the Frost-Free Cold Air Guns were used with unfiltered compressed air. During the hot summer months in the plant, condensation would form in the compressed air piping in the plant. The condensation entered the Frost-Free Cold Air Guns resulting in a couple of problems: freezing inside the Cold Air Gun resulted in a reduction of cold air flow and condensation in the outlet air flow began blowing liquid onto the extrusions. A recommendation was made to filter the compressed air to 5 microns and dry it to a pressure dew point of 40°F or less. The company incorporated these compressed air preparation steps in their production process which eliminated the problems. After these changes were made, the company was able to successfully cool their extrusions quickly without compromising the quality of their product.

How the Frost-Free Cold Air Gun Works Vortec Frost-Free Cold Air Guns use vortex tube technology and filtered compressed air to produce sub-freezing air as low as -10 deg F for numerous industrial spot cooling applications. With no moving parts to wear out, Frost-Free Cold Air Guns require no electricity at the target, just a source of clean and dry compressed air.

Frost-Free Cold Air Guns are most often used for cooling of metal parts, in the machining and repair of metals, plastics, wood, ceramics and other materials. Cold air machining outperforms mist coolants and substantially increases tool life and feed rates on dry machining operations. The effective cooling from a Frost-Free Cold Air Gun can eliminate heat-related parts growth while improving parts tolerance and surface finish quality. The 621 Frost-Free Cold Air Gun uses only 25 scfm of compressed air to produce up to 1500 btuh of cooling and can achieve temperatures as low as 20°F. The Frost-Free Cold Air Gun has a double insulated flexible cold air outlet nozzle that eliminates condensation and frost from forming on the nozzle.