US3759448A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Simplified flat spray fuel nozzle
Assignee: Avco Corp
•
Filing: 1972-09-15
•
Granted: 1973-09-18
•
Expires: 1992-09-15
Abstract
Abstract A flat spray fuel nozzle comprising a generally spherical tip with an elongated fuel discharge slot extending from a spherical chamber. A fuel splitter is adjustably positioned in the chamber, by means of a sleeve-like shim, to divert and reunite fuel at the slot to increase turbulence. An air shroud surrounds the exterior of the tip and has a discharge slot in line with the slot in the tip. A splitter element is positioned in the shroud so that air passing through the shroud is divided into separate streams which impinge on either side of the liquid film adjacent the fuel slot to further increase atomization of the fuel.
Inventors
- 👤 S Watkins
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 10:00
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/10; F23D11/12; F23D11/14
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
211 words
A fuel nozzle comprising: a nozzle body with a fuel flow path therethrough having an inlet for receiving pressurized fuel and an outlet for discharge of fuel from said nozzle body in a spray pattern; said nozzle body including a generally hemispherical tip at the outlet end thereof and a generally hemispherical chamber within said tip, said hemispherical tip having an elongated fuel slot extending outward from said hemispherical chamber, whereby fuel is discharged in a flat spray pattern, said flow path through said nozzle body having a shoulder formed therein at a given distance from said slot; a fuel splitter element positioned within said chamber with the longitudinal axis of its edge lying generally in the plane of said fuel slot for diverting the fuel flow into separate streams and reuniting the streams against one another adjacent said fuel slot thereby maximizing turbulence and atomization of the fuel, said fuel splitter element being supported by a splitter assembly having a flange adjacent said shoulder; and a sleeve-like shim sandwiched between said flange and said shoulder, said shim having an adjacent axial dimension so as to adjustably position said flange and said fuel splitter element relative to said fuel slot thereby producing a predetermined distribution of fuel discharged from said nozzle.
Claim 2
Dependent Claim
211 words
A fuel nozzle comprising: a nozzle body with a fuel flow path therethrough having an inlet for receiving pressurized fuel and an outlet for discharge of fuel from said nozzle body in a spray pattern; said nozzle body including a generally hemispherical tip at the outlet end thereof and a generally hemispherical chamber within said tip, said hemispherical tip having an elongated fuel slot extending outward from said hemispherical chamber, whereby fuel is discharged in a flat spray pattern, said flow path through said nozzle body having a shoulder formed therein at a given distance from said slot; a fuel splitter element positioned within said chamber with the longitudinal axis of its edge lying generally in the plane of said fuel slot for diverting the fuel flow into separate streams and reuniting the streams against one another adjacent said fuel slot thereby maximizing turbulence and atomization of the fuel, said fuel splitter element being supported by a splitter assembly having a flange adjacent said shoulder; and a sleeve-like shim sandwiched between said flange and said shoulder, said shim having an adjacent axial dimension so as to adjustably position said flange and said fuel splitter element relative to said fuel slot thereby producing a predetermined distribution of fuel discharged from said nozzle.
Claim 3
Dependent Claim
21 words
A fuel nozzle as in claim 1 wherein the edge of said fuel splitter element has sharp corners to maximize turbulence.
Claim 4
Dependent Claim
73 words
A fuel nozzle as in claim 2 wherein: said splitter assembly has a central passage from a point upstream of said flange through said flange and a pair of passages extending downstream from said central passage to opposite sides of said fuel splitter element; said fuel nozzle further comprises a screen element positioned over the upstream end of said central passage and within said fuel nozzle, said screen being generally tubular in form.
Claim 5
Dependent Claim
53 words
A fuel nozzle as in claim 2 further comprising: an air splitter element secured to the interior of said shroud for dividing air flowing between the tip and the interior of said shroud into separate streams in the same plane as that for said fuel splitter, said streams reuniting at said fuel-air slot.
Claim 6
Dependent Claim
40 words
A fuel nozzle as in claim 4 wherein said air splitter element is an elongated sheet-like element secured to the interior of said shroud and has a central opening telescoped over a boss formed on said tip adjacent said fuel-slot.
Claim 7
Dependent Claim
28 words
A fuel nozzle as in claim 5 wherein said air splitter element is deformable toward and away from said air-fuel slot to optimize the atomization of said fuel.
Claim 8
Dependent Claim
65 words
A fuel nozzle as in claim 6 wherein said shroud has a cap generally conforming to the hemispherical tip in the plane of said fuel and said air-fuel slots, said cap being straight in the plane ninety degrees with respect to said first-mentioned plane to form corners on opposite sides of said air splitter element thereby increasing the flow area around said air splitter element.
Claim 9
Dependent Claim
56 words
A fuel nozzle as in claim 1 further comprising: an outer shroud positioned over and spaced from said tip, said shroud having at least one inlet for pressurized air and an elongated air-fuel slot in the same plane as the fuel slot whereby energy is transferred from the air to said fuel to further increase atomization.
References Cited (Backward Citations)
US2722458A
Cited
US3590318A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-09-17 | 1977-03-19 | 1977-09-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-09-17 | 1981-03-19 | 1981-09-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-09-17 | 1985-03-19 | 1985-09-18 | $7700.00 | Window Closed / Lapsed |