Ultrasonic liquid atomizer
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United States of America Patent
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-
Sep 10, 1985
Grant Date -
N/A
app pub date -
Sep 12, 1983
filing date -
Sep 13, 1982
priority date (Note) -
Expired
status (Latency Note)
Importance
Abstract
An ultrasonic liquid atomizer includes a piezoelectric transducer element mechanically coupled to an amplitude transformer and further comprises an atomizing disk mounted at the free end of the amplitude transformer. The atomizing disk and the amplitude transformer are so mutually matched that the vibration system of atomizing disk and amplitude transformer evinces the same resonant frequency as the transducer element, preferably about 60 kHz. Furthermore, the cross-sectional transitions between the transducer element and the amplitude transformer on one hand and between the amplitude transformer and the atomizing disk on the other are designed to be low in notch-stresses. An ultrasonic liquid atomizer so designed evinces both good properties of vibrations and furthermore advantageous long service lives. It makes possible a high specific flow rate and avoids cavitation and therefore spatters.
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