|
Air Jets and Nozzles
 Reduce
noise level and
air cost on blowoff operations.
 What
are Air Jets and Nozzles?
A
simple solution to excessive air consumption and noise
level on compressed air "blowoff" operations.
Using a small amount of compressed air as a power source,
Air Jets and Nozzles produce outlet flows up to 25 times
compressed air consumption.
Air savings, compared to open copper tubes or pipe nipples
commonly used for blowoff can be as high as 80%. Less
compressed air means less noise – typical noise level
reduction is 10 dBA. All Air Jets and Nozzles meet
OSHA maximum dead-ended pressure requirements.
An
open 1/4" (6mm) copper tube, by contrast, ejects
pure compressed air at up to 40 standard cubic feet
per minute (1133 SLPM), the entire output of a 10 horsepower
compressor. Annual energy cost can exceed $1,000 per year.
Noise levels in excess of 100 dBA are commonly produced.
When supply pressure exceeds 30 PSIG (2 BAR), an open
jet violates OSHA static pressure requirements.
| Applications |
Advantages |
 |
Part
cleaning |
|
Reduced
compressed air cost |
|
Chip
removal |
|
10
dBA average noise reduction |
|
Part
drying |
|
Improved
blowoff performance |
|
Liquid
blowoff |
|
Compact |
|
Part
cooling |
|
Meet
OSHA noise level requirements |
|
Material
conveying |
|
Meet
OSHA dead-end pressure requirements |
|
Part
ejection |
|
Compact |
|
Fiber
conveying |
|
Compact |
|
Air
assist |
|
Compact |
How
Air Jets and Nozzles Work
Air Jets utilize
the coanda effect (wall attachment of a high velocity
fluid) to produce air motion in their surroundings. As
illustrated below, a small amount of compressed air is
throttled through an internal ring nozzle above sonic
velocity. A vacuum is produced, pulling large volumes
of surrounding, or "free" air, through the jet.
Air
Jets produce the highest force to air consumption ratio
of all EXAIR blowoff products, making them the most economical
choice for "tough" applications such as part
ejection or chip removal. Both the outlet and inlet can
be ducted for remote positioning. If the end is blocked,
flow simply reverses at well below OSHA static pressure
requirements.
Air
Nozzles also
use the coanda effect to amplify compressed airflow 25
times or more. As illustrated to the right, compressed
air is ejected through a thin ring nozzle. As this ring
of air travels along the outer wall of the nozzle, surrounding
air is entrained into the stream. This entrained airstream
combines with the air ejected from the center hole to
produce a high volume, high velocity blast of air –
at minimal consumption. The slotted end allows air to
vent safely should the nozzle end be blocked.
Both
Air Jets and Nozzles are easily retrofitted to existing
blowoffs, and are available in adjustable or non-adjustable
versions.
 |
|
A
Model 1009 Adjustable Nozzle reduces air use and
improves performance of a blowgun.
|
 |
|
A
Model 1005 Air Nozzle blows trim away from a forming
die.
|
 |
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Oddly
shaped parts often require a combination of
Air Jets and Nozzles for blowoff.
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Download PDF File
| Price
List Link
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