Super Air Knife
Quiet, Hard-hitting Curtain of Air for Blowoff, Cleaning, Drying & Cooling
EXAIR's Super Air Knife provides a quiet, hard-hitting curtain of air for blowoff, cleaning, drying and cooling. This engineered air knife dramatically reduces compressed air usage and noise when compared to other blowoffs.
APPLICATIONS
DRYThe Super Air Knife produces laminar airflow, which wraps around any object the Super Air Knife is pointed at. This is perfect for removing moisture prior to packaging, painting, labeling, bar coding and assembly. The air velocity can be easily adjusted with a pressure regulator. |
BLOWOFFThe Super Air Knife is ideal for blowing off chips, dirt or water from parts, webs or conveyors. It delivers a uniform sheet of air that has the same force across the entire length. There are no interruptions or "dead spots" which means all surfaces are dried or cleaned evenly. |
COOLGreat volumes of airflow can be generated in very tight spaces due to 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
① Compressed air flows through an inlet into the plenum chamber of the Super Air Knife. The flow is directed to a precise, slotted orifice. ② As the primary airflow exits the thin slotted nozzle, it follows a flat surface that directs the airflow in a perfectly straight line. This creates a uniform sheet of air across the entire length of the Super Air Knife. ③ Velocity loss is minimized and force is maximized as the room air is entrained into the primary airstream at a ratio of 40:1. The result is a well defined sheet of laminar airflow with hard-hitting force and minimal wind shear.
Need More Information On Super Air Knives?
| 1.800.903.9247 (toll free in U.S. & Canada) |
| techelp@exair.com |
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BLOWOFF COMPARISON
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(2) Model 110012 12" (305mm) Super Air Knives blow water off bottles prior to labeling. |
There are a variety of ways to blow the water from the bottles shown in the photo to the right, but which method is best? The following comparison of drilled pipe, flat air nozzles, a blower and the Super Air Knife proves that EXAIR has the best choice for your blowoff, cooling or drying application.
Our goal for each of the blowoff choices was to use the least amount of air possible to get the job done (lowest energy and noise level). Compressed air pressure required for each was 60 PSIG (4.1 BAR) which provided adequate velocity to blow the water off. The table below summarizes the overall performance. Since your actual part may have an odd configuration, holes or sharp edges, we took sound level measurements in free air (no impinging surface).
Blowoff Comparison Statistics |
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|---|---|---|---|---|---|---|---|---|
| Type of Blowoff | PSIG /BAR | SCFM /SLPM | Horsepower Req'd | Sound level dBA | Initial Cost | *Annual Elec Cost | Approx Annual Maint Cost | First Year Cost |
| Drilled Pipe | 60/4.1 |
174/4,924 |
35 |
91 |
$50 |
$4,508 |
$920 |
$5,478 |
| Flat Air Nozzles | 60/4.1 |
257/7,273 |
51 |
102 |
$300 |
$6,569 |
$1,450 |
$8,319 |
| Blower Air Knife | 3/0.2 |
N/A |
10 |
90 |
$7,000 |
$1,288 |
$1,500 |
$9,788 |
| Super Air Knife | 60/4.1 |
55/1,557 |
11 |
69 |
$850 |
$1,417 |
$300 |
$2,567 |
| *Based on national average electricity cost of 8.3 cents per kWh. Annual cost reflects 40 hours per week, 52 weeks per year. | ||||||||