DFPT
Our Dual-Frequency Processing
Technology:
We combine multiple technologies into a single
Ultrasonic Reaction Chamber to dramatically increase reaction rates. This
arrangement ensures complete and thorough treatment for all of the material
positioned inside this cavity.
The features integrated into Dual-Frequency Systems
include:
Transducer Positioning:
The two sound sources must be directly opposing
one another. The longitudinal pressure waves created by each sound source must
interact symmetrically for maximum benefit.

The wave symmetry is critical to ensure that the wave
fronts create a completely uniform energy profile across the reactor's gap.

A staggered or offset positioning of the transducers
minimizes the effective size of the dual-frequency reaction zone.

The ultrasonic processing results will be obtainable with
a non-opposing arrangement. However, the true potential of our Dual-Frequency
Processing Technology will not be available or possible.

Pressure Wave Amplification:
The dynamic relationship between the (2) chosen
fundamental frequencies creates a constructive sound wave pressure amplitude
amplification effect. The abnormally high relative pressure amplitude of a
Dual-Frequency Reactor exceeds all single frequency processing capabilities.

The Cavitation Intensity Amplification Effect created
by
a Dual-Frequency Reactor driven at 16 kHz and 20 kHz.
The sound energy emitted from two opposing sources
has a unique cavitation intensity amplification effect. The pressure waves
superimpose upon one another, rendering constructive reinforcement and
destructive interference.
The magnitude of the relative pressure amplitude is
doubled when the two waves complement and fortify one-another (aka constructive
reinforcement). Destructive interference is when the waves cancel each other.
The large relative pressure differential between the high and low pressure zones
maximizes the intense implosive forces within the processing chamber for the
exposure time allotted. This abnormally high relative pressure amplitude exceeds
single frequency processing capabilities.

Beat-Frequency and Multiple Harmonics:
The two fundamental frequencies produces a third frequency
called the beat frequency. The beat frequency is a highly energized localized
zone that is in constant motion across the processing chamber's gap.



The Sub-Harmonic Frequency Spectrum created by a
Dual-Frequency Reactor driven at 16 kHz and 20 kHz.
Driving the opposing diaphragm plates at different
resonant frequencies creates a Beat-Frequency with Multiple Harmonics. The
Beat-Frequency and Multiple Harmonics eliminates acoustic dead spots within the
reactor's processing cavity.
The rippling effect of the beat-frequency moves the
fortified shock wave back-and-forth throughout the Reaction Cell's gap. The
entire ultrasonic chamber is uniformly activated to produce consistent
processing results for all particles passing through.
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to DFR Reactor Operational Details
July 27, 2006