US3899130A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Atomizer with graduated liquid feed and manufacturing method
Assignee: Sonic Development Corporation of America
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Filing: 1974-02-28
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Granted: 1975-08-12
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Expires: 1994-02-28
Abstract
Abstract The atomizer has a conduit for distributing liquid from a single supply inlet to a plurality of feed holes spaced apart from one another. The cross-sectional area of the distribution conduit decreases at increasing distances from the inlet, thus promoting even distribution of liquid among the multiple feed holes at both high and low flow rates. The rate of decrease of cross-sectional area preferably is made inversely proportional to the viscosity of the liquid. In its preferred form, the atomizer utilizes a converging-diverging nozzle with a cavity resonator to generate sonic pressure waves to atomize the liquid. The distribution conduit of decreasing cross-sectional area is formed by using eccentric cylinders, one inside the other, with the cylinders being farthest apart near the liquid inlet, and nearest together 180* from the liquid inlet.
Inventors
- 👤 Jr Frank S Bell
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 02:58
CPC Classifications
B; B05; B05B; B05B17/00; B05B17/04; B05B17/06; B05B17/0692; B05B7/00; B05B7/02; B05B7/04; B05B7/0416; B05B7/0433
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
66 words
In an atomizer including a nozzle with gas and liquid inlets and a plurality of spaced apart liquid feed passageways for feeding the liquid into the gas, a liquid manifold for distributing liquid frOm said liquid inlet to said feed passageways, said manifold having a distribution conduit connecting said inlet with said passageways which conduit decreases in cross-sectional area with increasing distance from said liquid inlet.
Claim 2
Dependent Claim
66 words
In an atomizer including a nozzle with gas and liquid inlets and a plurality of spaced apart liquid feed passageways for feeding the liquid into the gas, a liquid manifold for distributing liquid frOm said liquid inlet to said feed passageways, said manifold having a distribution conduit connecting said inlet with said passageways which conduit decreases in cross-sectional area with increasing distance from said liquid inlet.
Claim 3
Dependent Claim
25 words
An atomizer as in claim 1 in which said feed passageways are spaced around the perimeter of said nozzle, and said distribution conduit is loop-shaped.
Claim 4
Dependent Claim
36 words
An atomizer as in claim 2 in which said loop has two halves, with each half starting at said inlet and decreasing in cross-sectional area at increasing distances from said inlet until a throat is reached.
Claim 5
Dependent Claim
32 words
An atomizer as in claim 1 in which the rate of decrease in said cross-sectional area is inversely proportional to the viscosity of the liquid to be supplied to said liquid inlet.
Claim 6
Dependent Claim
84 words
A sonic pressure wave-actuated atomizer including a converging-diverging gas nozzle and a cavity resonator opposite the exit of said nozzle, a plurality of feed holes spaced around the perimeter of said nozzle and positioned to deliver a liquid into the gas flowing through the nozzle, liquid inlet conduit means, and manifold means forming a distribution conduit of generally circular configuration interconnecting said feed holes with said inlet conduit, said distribution conduit having a cross-sectional area which decreases at increasing distances from said inlet conduit.
Claim 7
Dependent Claim
84 words
A sonic pressure wave-actuated atomizer including a converging-diverging gas nozzle and a cavity resonator opposite the exit of said nozzle, a plurality of feed holes spaced around the perimeter of said nozzle and positioned to deliver a liquid into the gas flowing through the nozzle, liquid inlet conduit means, and manifold means forming a distribution conduit of generally circular configuration interconnecting said feed holes with said inlet conduit, said distribution conduit having a cross-sectional area which decreases at increasing distances from said inlet conduit.
Claim 8
Dependent Claim
54 words
An atomizer as in claim 5 in which said manifold means comprises a first member forming a generally cylindrically-shaped outer wall for said conduit, a second member, of generally cylindrical shape and having a diameter smaller than the first cylinder forming said outer wall, said second member being positioned eccentrically within said first cylinder.
Claim 9
Dependent Claim
39 words
An atomizer as in claim 6 in which said second member has a central gas flow passageway through it forming a portion of said nozzle, and said feed holes extend from the outside wall into said gas flow passageway.
Claim 10
Dependent Claim
19 words
An atomizer as in claim 5 in which said feed holes exit into the diverging portion of said nozzle.
Claim 11
Dependent Claim
30 words
An atomizer as in claim 5 in which said nozzle has a throat of constant diameter, and the diameter of said cavity is approximately the same as the throat diameter.
Claim 12
Dependent Claim
102 words
An atomizer as in claim 5 in which the diverging portion of said nozzle has a half-angle of divergence of between 4* and 25*, preferably between 7* and 15*, 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 the gas flowing at the exit of the diverging section of the nozzle, with only gas flow through the nozzle, and D* is the nozzle throat diameter, the cavity diameter is approximately equal to D*, and said feed holes exit into said diverging section.
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) | 1978-08-11 | 1979-02-10 | 1979-08-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-08-11 | 1983-02-10 | 1983-08-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-08-11 | 1987-02-10 | 1987-08-12 | $7700.00 | Window Closed / Lapsed |