US4267698A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling-air nozzle for use in a heated chamber
Assignee: BBC BROWN BOVERIE & Co Ltd
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Filing: 1979-05-01
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Granted: 1981-05-19
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Expires: 1999-05-01
Abstract
Abstract To obtain uniform cooling of the wall (1) of a combustion chamber of a gas turbine, it is proposed to provide ridges (2) in the wall (1), with cooling-air nozzles (3) being inserted into the ridges. The cooling-air nozzles (3) thus do not project into the main gas stream and the cooling film can be guided in a rheologically favorable manner between the surface (11) which is to be cooled and the main gas stream.
Inventors
- 👤 Max Hartmann
- 👤 Ferdinand Thuringer
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-05 04:19
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/06; F23R3/045
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
73 words
A cooling-air nozzle in combination with a heated chamber of the type comprising an enclosure wall having an internal surface to be cooled, said nozzle including a nozzle body having cooling air inlet means, and cooling air discharge means directed generally longitudinally relative to said wall, said internal surface including a depression, said nozzle body being located within said depression such that the innermost end thereof is substantially flush with said internal surface.
Claim 2
Dependent Claim
73 words
A cooling-air nozzle in combination with a heated chamber of the type comprising an enclosure wall having an internal surface to be cooled, said nozzle including a nozzle body having cooling air inlet means, and cooling air discharge means directed generally longitudinally relative to said wall, said internal surface including a depression, said nozzle body being located within said depression such that the innermost end thereof is substantially flush with said internal surface.
Claim 3
Dependent Claim
25 words
Apparatus according to claim 1 comprising a plurality of said cooling-air nozzles arranged uniformly in a circumferential row around the periphery of said internal surface.
Claim 4
Dependent Claim
31 words
Apparatus according to claim 1 comprising a plurality of longitudinally spaced circumferential rows of said nozzles, the nozzles of one row being circumferentially offset relative to the nozzles of another row.
Claim 5
Dependent Claim
26 words
Apparatus according to claim 1, wherein said nozzle body is of generally cylindrical configuration, said air discharge means being radially oriented relative to said nozzle body.
Claim 6
Dependent Claim
17 words
Apparatus according to claim 4, wherein said air discharge means of each nozzle is subdivided by webs.
Claim 7
Dependent Claim
26 words
Apparatus according to claim 1, wherein said nozzle body is of generally cylindrical configuration, said discharge means comprising bores extending radially relative to said nozzle body.
Claim 8
Dependent Claim
25 words
Apparatus according to claim 1, wherein said nozzle body includes an orifice plate carrying said air inlet means for regulating the amount of cooling air.
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) | 1984-05-18 | 1984-11-17 | 1985-05-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1988-05-18 | 1988-11-17 | 1989-05-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1992-05-18 | 1992-11-17 | 1993-05-19 | $7700.00 | Window Closed / Lapsed |