US3774846A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pressure wave atomizing apparatus
Assignee: Sonic Development Corporation of America
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Filing: 1972-01-17
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Granted: 1973-11-27
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Expires: 1992-01-17
Abstract
Abstract Fluids to be mixed and atomized are fed into a convergingdiverging nozzle which directs them towards a cavity member. In one embodiment of the invention, liquid is forced through the central opening of the nozzle, and gas is injected into the liquid at a plurality of points around the liquid stream through an inclined baffle structure near the converging portion of the nozzle. In another embodiment, air is fed into the central opening of the nozzle, and liquid through the baffle structure, as well as downstream from the baffle structure. The liquid supply flow rate and the gas supply pressure are regulated so that the input gas pressure is greater than the minimum liquid pressure but less than the maximum liquid pressure. The upstream liquid feed passageway is effectively closed at low flow rates, while being open at high flow rates, thus enabling the maintenance of relatively high liquid back-pressures for accurate flow rate control over a wide range of flow values.
Inventors
- 👤 R Schurig
- 👤 J Korn
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-01 21:03
CPC Classifications
B; B05; B05B; B05B17/00; B05B17/04; B05B17/06; B05B17/0692; F; F23; F23D; F23D11/00; F23D11/34; Y; Y10; Y10S; Y10S261/00; Y10S261/48; Y10S261/75
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
213 words
An atomizer device, said device comprising, in combination, a nozzle having a converging inlet section for receiving, accelerating and forming a pressurized gas into a gas stream, a diverging outlet section connected to said inlet section for receiving accelerated gas therefrom and issuing said gas stream into the ambient medium, and a substantially straight section joining said converging and diverging sections, a cavity resonator facing said outlet opening, first conduit means for guiding fluent materials into said gas stream within said diverging section of said nozzle, second conduit means for guiding fluent materials into said gas stream at a position within said straight section of said nozzle, said second conduit means including holes exiting at the internal walls of said converging section, a baffle member mounted inside said atomizer opposite and spaced from the outlets of said holes, said baffle member extending in a direction generally parallel to the internal walls of said converging section to a point adjacent the downstream end of said converging section, said baffle member having a generally frustro-conical shape with a smaller opening whose diameter is substantially equal to that of the downstream end of said converging section, the total effective flow passageway cross-sectional areas of said first and second conduit means being approximately equal to one another.
Claim 2
Dependent Claim
213 words
An atomizer device, said device comprising, in combination, a nozzle having a converging inlet section for receiving, accelerating and forming a pressurized gas into a gas stream, a diverging outlet section connected to said inlet section for receiving accelerated gas therefrom and issuing said gas stream into the ambient medium, and a substantially straight section joining said converging and diverging sections, a cavity resonator facing said outlet opening, first conduit means for guiding fluent materials into said gas stream within said diverging section of said nozzle, second conduit means for guiding fluent materials into said gas stream at a position within said straight section of said nozzle, said second conduit means including holes exiting at the internal walls of said converging section, a baffle member mounted inside said atomizer opposite and spaced from the outlets of said holes, said baffle member extending in a direction generally parallel to the internal walls of said converging section to a point adjacent the downstream end of said converging section, said baffle member having a generally frustro-conical shape with a smaller opening whose diameter is substantially equal to that of the downstream end of said converging section, the total effective flow passageway cross-sectional areas of said first and second conduit means being approximately equal to one another.
Claim 3
Dependent Claim
25 words
Apparatus as in claim 1 in which said cavity has a diameter which is approximately equal to the diameter of the throat of said nozzle.
Claim 4
Dependent Claim
65 words
Apparatus as in claim 1 in which said cavity has a depth of approximately lambda /2 or lambda /4 where: lambda 1.307 D* Square Root ME2 - 1 in which ME is the Mach number of gas flowing at the exit of the diverging section of the nozzle, with only gas flow through the center of the nozzle, and D* is the nozzle throat diameter.
Claim 5
Dependent Claim
43 words
Apparatus as in claim 3 in which said nozzle has a straight-walled section of substantially constant cross-sectional area between its converging and diverging sections, and said cavity has a diameter which is approximately equal to the diameter of the throat of said nozzle.
Claim 6
Dependent Claim
22 words
Apparatus as in claim 1 in which the diverging section of said nozzle has a divergence half-angle of approximately 4* to 25*.
References Cited (Backward Citations)
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-11-26 | 1977-05-28 | 1977-11-27 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-11-26 | 1981-05-28 | 1981-11-27 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-11-26 | 1985-05-28 | 1985-11-27 | $7700.00 | Window Closed / Lapsed |