Patent US3713588A successfully refreshed from Google Patents.
US3713588A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel spray nozzles with air atomization
Assignee: Motors Liquidation Co
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Filing: 1970-11-27
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Granted: 1973-01-30
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Expires: 1990-11-27
Abstract
Abstract Fuel spray nozzles particularly suited for gas turbine combustion apparatus have inner and outer walls providing between them an annular passage for combustion air into the combustion chamber. Swirl vanes in the passage cause the air to take on a substantial tangential velocity so that it is discharged in a conical form into the combustion chamber. The fuel is injected into the passage at its outlet from a ring of ports in either the inner or outer wall of the passage so that it is atomized by and carried away with the air. The nozzles also include a pilot nozzle mounted within the inner wall and provide a second air entrance within the interior of the inner wall. Swirl vanes may be provided to swirl the air entering through the inner passage.
Inventors
- 👤 C Sharpe
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 10:31
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/10; F23R3/12; F23R3/14; F23D; F23D11/00; F23D11/10; F23D11/106; F23D11/107
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
203 words
A fuel spray nozzle for dispersing liquid fuel in a gas turbine combustion apparatus or the like comprising, in combination, an outer ring, an inner ring mounted within the outer ring, the rings defining between them an annular combustion air passage into the combustion apparatus, an annular cascade of swirl vanes extending between the rings adapted to deliver the air into the combustion apparatus with a substantial tangential velocity component so that the air follows an expanding conical path upon discharge from the nozzle, the inner ring having a smooth unbroken outer surface extending downstream from the swirl vanes, means for supplying liquid fuel into the inner ring, means for delivering the said fuel into the passage from the inner ring in solid streams at a plural number of outlets distributed around the ring through the said surface immediately downstream from the swirl vanes and adjacent the air discharge end of the ring so that the fuel is nebulized by, and distributed from the nozzle in a conical spray pattern with, the air flowing through the said air passage, and means for supplying additional air into the combustion apparatus through the interior of the inner ring into the interior of the spray pattern.
Claim 2
Dependent Claim
203 words
A fuel spray nozzle for dispersing liquid fuel in a gas turbine combustion apparatus or the like comprising, in combination, an outer ring, an inner ring mounted within the outer ring, the rings defining between them an annular combustion air passage into the combustion apparatus, an annular cascade of swirl vanes extending between the rings adapted to deliver the air into the combustion apparatus with a substantial tangential velocity component so that the air follows an expanding conical path upon discharge from the nozzle, the inner ring having a smooth unbroken outer surface extending downstream from the swirl vanes, means for supplying liquid fuel into the inner ring, means for delivering the said fuel into the passage from the inner ring in solid streams at a plural number of outlets distributed around the ring through the said surface immediately downstream from the swirl vanes and adjacent the air discharge end of the ring so that the fuel is nebulized by, and distributed from the nozzle in a conical spray pattern with, the air flowing through the said air passage, and means for supplying additional air into the combustion apparatus through the interior of the inner ring into the interior of the spray pattern.
Claim 3
Dependent Claim
203 words
A fuel spray nozzle for dispersing liquid fuel in a gas turbine combustion apparatus or the like comprising, in combination, an outer ring, an inner ring mounted within the outer ring, the rings defining between them an annular combustion air passage into the combustion apparatus, an annular cascade of swirl vanes extending between the rings adapted to deliver the air into the combustion apparatus with a substantial tangential velocity component so that the air follows an expanding conical path upon discharge from the nozzle, the inner ring having a smooth unbroken outer surface extending downstream from the swirl vanes, means for supplying liquid fuel into the inner ring, means for delivering the said fuel into the passage from the inner ring in solid streams at a plural number of outlets distributed around the ring through the said surface immediately downstream from the swirl vanes and adjacent the air discharge end of the ring so that the fuel is nebulized by, and distributed from the nozzle in a conical spray pattern with, the air flowing through the said air passage, and means for supplying additional air into the combustion apparatus through the interior of the inner ring into the interior of the spray pattern.
Claim 4
Dependent Claim
203 words
A fuel spray nozzle for dispersing liquid fuel in a gas turbine combustion apparatus or the like comprising, in combination, an outer ring, an inner ring mounted within the outer ring, the rings defining between them an annular combustion air passage into the combustion apparatus, an annular cascade of swirl vanes extending between the rings adapted to deliver the air into the combustion apparatus with a substantial tangential velocity component so that the air follows an expanding conical path upon discharge from the nozzle, the inner ring having a smooth unbroken outer surface extending downstream from the swirl vanes, means for supplying liquid fuel into the inner ring, means for delivering the said fuel into the passage from the inner ring in solid streams at a plural number of outlets distributed around the ring through the said surface immediately downstream from the swirl vanes and adjacent the air discharge end of the ring so that the fuel is nebulized by, and distributed from the nozzle in a conical spray pattern with, the air flowing through the said air passage, and means for supplying additional air into the combustion apparatus through the interior of the inner ring into the interior of the spray pattern.
Claim 5
Dependent Claim
203 words
A fuel spray nozzle for dispersing liquid fuel in a gas turbine combustion apparatus or the like comprising, in combination, an outer ring, an inner ring mounted within the outer ring, the rings defining between them an annular combustion air passage into the combustion apparatus, an annular cascade of swirl vanes extending between the rings adapted to deliver the air into the combustion apparatus with a substantial tangential velocity component so that the air follows an expanding conical path upon discharge from the nozzle, means for supplying liquid fuel into the inner ring, means for delivering the said fuel into the passage from the inner ring in solid streams at a plural number of outlets distributed arOund the ring immediately downstream from the swirl vanes and adjacent the air discharge end of the ring so that the fuel is nebulized by, and distributed from the nozzle in a conical spray pattern with, the air flowing through the said air passage, the said outlets being located in the lines of air flow from the downstream ends of the swirl vanes, and means for supplying additional air into the combustion apparatus through the interior of the inner ring into the interior of the spray pattern.
Claim 6
Dependent Claim
203 words
A fuel spray nozzle for dispersing liquid fuel in a gas turbine combustion apparatus or the like comprising, in combination, an outer ring, an inner ring mounted within the outer ring, the rings defining between them an annular combustion air passage into the combustion apparatus, an annular cascade of swirl vanes extending between the rings adapted to deliver the air into the combustion apparatus with a substantial tangential velocity component so that the air follows an expanding conical path upon discharge from the nozzle, means for supplying liquid fuel into the inner ring, means for delivering the said fuel into the passage from the inner ring in solid streams at a plural number of outlets distributed arOund the ring immediately downstream from the swirl vanes and adjacent the air discharge end of the ring so that the fuel is nebulized by, and distributed from the nozzle in a conical spray pattern with, the air flowing through the said air passage, the said outlets being located in the lines of air flow from the downstream ends of the swirl vanes, and means for supplying additional air into the combustion apparatus through the interior of the inner ring into the interior of the spray pattern.
Claim 7
Dependent Claim
179 words
A fuel spray nozzle for use with pressurized combustion apparatus adapted to atomize the spray liquid fuel primarily through energization by combustion air flowing to the apparatus, the nozzle comprising, in combination, an outer shell adapted for mounting in an opening in a combustion chamber wall, an inner shell spaced from the outer shell and defining with the outer shell an outer combustion air passage into the combustion chamber, the inner shell defining an inner combustion air passage into the combustion chamber through the inner shell, swirl vanes in each passage effective to swirl the air in the passages in a common direction, means for supplying liquid fuel into the inner shell, and means for discharging the said fuel from the inner shell around the downstream margin of the inner shell in solid streams for atomization and distribution by the swirling air flowing past the inner shell, the discharging means comprising a ring of ports in the inner shell, the ports being located immediately downstream of the swirl vanes approximately on the mean camber lines extended of the vanes.
Claim 8
Dependent Claim
179 words
A fuel spray nozzle for use with pressurized combustion apparatus adapted to atomize the spray liquid fuel primarily through energization by combustion air flowing to the apparatus, the nozzle comprising, in combination, an outer shell adapted for mounting in an opening in a combustion chamber wall, an inner shell spaced from the outer shell and defining with the outer shell an outer combustion air passage into the combustion chamber, the inner shell defining an inner combustion air passage into the combustion chamber through the inner shell, swirl vanes in each passage effective to swirl the air in the passages in a common direction, means for supplying liquid fuel into the inner shell, and means for discharging the said fuel from the inner shell around the downstream margin of the inner shell in solid streams for atomization and distribution by the swirling air flowing past the inner shell, the discharging means comprising a ring of ports in the inner shell, the ports being located immediately downstream of the swirl vanes approximately on the mean camber lines extended of the vanes.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1976-01-30 | 1976-07-31 | 1977-01-30 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1980-01-30 | 1980-07-31 | 1981-01-30 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1984-01-30 | 1984-07-31 | 1985-01-30 | $7700.00 | Window Closed / Lapsed |