US3699773A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel cooled fuel injectors
Assignee: General Electric Co
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Filing: 1968-12-23
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Granted: 1972-10-24
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Expires: 1988-12-23
Abstract
Abstract The disclosure shows two forms of injectors for supplying fuel to an ultra high temperature gas stream. One form of fuel injector provides a cooling film of fuel by reason of its porous construction. The other form of injector provides the same type of cooling film through the use of small holes disposed at a low angle to the outer, exposed surface of the injector.
Inventors
- 👤 Kenneth W Schuning
- 👤 Eugene E Carlson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 21:33
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; Y; Y10; Y10S; Y10S261/00; Y10S261/39
Claims Analysis
Total Claims: 2
Claim 1
Independent Claim
178 words
A fuel injector having, an interior plenum chamber connected to a source of pressurized fuel, said injector having a portion disposed in a pressurized air stream which is provided to support combustion of the fuel, characterized by passageway means for providing fuel flow from said chamber to form a continuous fuel film over substantially all of the surface area of said injector which is exposed to said air stream, said film being continually maintained by fuel flow through said passageway means as fuel is carried into said air stream, said passageway means comprising a plurality of holes having a diameter between 0.010 and 0.100 inch and inclined at an angle between 10* and 30* relative to the exposed surface of the injector, and additional, relatively large passageways for injecting further fuel into the gas stream under choked flow conditions to maintain the plenum chamber pressure, said additional passageways being spaced apart along the length of said exposed portion with their axes normal to the direction of air stream flow whereby the injector is effectively cooled by the fuel.
Claim 2
Dependent Claim
178 words
A fuel injector having, an interior plenum chamber connected to a source of pressurized fuel, said injector having a portion disposed in a pressurized air stream which is provided to support combustion of the fuel, characterized by passageway means for providing fuel flow from said chamber to form a continuous fuel film over substantially all of the surface area of said injector which is exposed to said air stream, said film being continually maintained by fuel flow through said passageway means as fuel is carried into said air stream, said passageway means comprising a plurality of holes having a diameter between 0.010 and 0.100 inch and inclined at an angle between 10* and 30* relative to the exposed surface of the injector, and additional, relatively large passageways for injecting further fuel into the gas stream under choked flow conditions to maintain the plenum chamber pressure, said additional passageways being spaced apart along the length of said exposed portion with their axes normal to the direction of air stream flow whereby the injector is effectively cooled by the fuel.
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) | 1975-10-24 | 1976-04-24 | 1976-10-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-10-24 | 1980-04-24 | 1980-10-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-10-24 | 1984-04-24 | 1984-10-24 | $7700.00 | Window Closed / Lapsed |