Nebulization control system for a piezoelectric ultrasonic nebulizer
US4319155A · kind A · utility
110Cited by
7References
5Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Dec 11, 1979 |
| Grant date | Mar 9, 1982 |
| Priority date | — |
| Expiry date | Dec 11, 1999 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10S261/48
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A nebulization control system for an ultrasonic nebulizer comprising a variable pulse oscillating circuit, an ultrasonic vibrating circuit and an ultrasonic vibrator is described. The ultrasonic vibrator is caused to vibrate alternatingly between a high level which is sufficient to nebulize a fluid and a low level which is insufficient to nebulize the same. The ratio of duration of the high level to the low level and/or the amplitude of vibration at the high level is variable. This arrangement permits a precise control of nebulization quantity and assists in the production of a fine, uniform mist of fluid.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.