B - Operations – Transporting – 05 – B
Patent
B - Operations, Transporting
05
B
32/4, 117/73
B05B 17/06 (2006.01)
Patent
CA 1247945
ULTRASONIC SPRAY NOZZLE AND METHOD J. Michael Soth and James R. Klemm Abstract Of The Disclosure An ultrasonic spray nozzle includes a piezoelectric transducer which develops mechanical vibrations in response to an applied periodic electrical potential. The vibrations are mechanically amplified and propagate to an atomizing surface over which fluid to be atomized is discharged by an internal fluid passage. Maximum vibrational amplitude of the atomizing surface is achieved when the frequency of the applied electrical potential equals the natural resonant frequency of the nozzle. A parameter of the applied electrical potential, such as fequency, is periodically varied such that the vibrational amplitude of the atomizing surface is periodically increased and decreased. Fluid atomization is reduced during periods of reduced vibrational amplitude permitting fluid to be distributed with greater uniformity onto the atomizing surface. Such uniform distribution results in a significant improvement in the definition of the spray pattern produced by the nozzle during periods of increased vibrational amplitude. To further enhance uniform fluid distribution, auxiliary fluid passages are provided through the atomizing surface.
515321
Klemm James R.
Soth J. Michael
Delavan Inc
Osler Hoskin & Harcourt Llp
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