US3913318A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine combustion equipment
Assignee: Rolls Royce PLC
•
Filing: 1973-08-08
•
Granted: 1975-10-21
•
Expires: 1993-08-08
Abstract
Abstract A vaporizer for a gas turbine engine. The vaporizer has a shroud surrounding the stem and is used to provide a cooling air space. It is provided with holes from which the cooling air issues radially. The radial jets improve combustion efficiency and reduce smoke emission.
Inventors
- 👤 Roger Geoffrey Fox
- 👤 Vernon Frederick Cox
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 04:31
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/28; F23R3/30; F23R3/32
Claims Analysis
Total Claims: 3
Claim 1
Independent Claim
147 words
A vaporizer for a gas turbine engine for receiving air and fuel separately and mixing them together, said vaporizer comprising a hollow stem to which air and fuel are delivered separately, at least one radial branch connected to the hollow stem and through which in operation there passes a flow of a mixture of the air and fuel delivered to the hollow stem, and a cylindrical shroud surrounding and radially spaced from the hollow stem to define an annular space for receiving a supply of air but not fuel, the cylindrical shroud having means defining holes provided in the wall thereof through which in operation air passes out of said annular space in a direction substantially radially of the stem to mix with the mixture of air and fuel discharged from the radial branch of the hollow stem immediately downstream of the discharge from said radial branch.
Claim 2
Dependent Claim
147 words
A vaporizer for a gas turbine engine for receiving air and fuel separately and mixing them together, said vaporizer comprising a hollow stem to which air and fuel are delivered separately, at least one radial branch connected to the hollow stem and through which in operation there passes a flow of a mixture of the air and fuel delivered to the hollow stem, and a cylindrical shroud surrounding and radially spaced from the hollow stem to define an annular space for receiving a supply of air but not fuel, the cylindrical shroud having means defining holes provided in the wall thereof through which in operation air passes out of said annular space in a direction substantially radially of the stem to mix with the mixture of air and fuel discharged from the radial branch of the hollow stem immediately downstream of the discharge from said radial branch.
Claim 3
Dependent Claim
33 words
A vaporizer as claimed in claim 1 and having a general T-shape comprising said hollow stem which constitutes the leg of the T and two transverse radial branches connected to said hollow stem.
References Cited (Backward Citations)
US2593849A
Cited
US2595765A
Cited
US2602292A
Cited
US2982098A
Cited
US3757522A
Cited
US3724207A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-10-20 | 1979-04-21 | 1979-10-21 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-10-20 | 1983-04-21 | 1983-10-21 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-10-20 | 1987-04-21 | 1987-10-21 | $7700.00 | Window Closed / Lapsed |