US4077205A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Louver construction for liner of gas turbine engine combustor
Assignee: RTX Corp
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Filing: 1976-09-07
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Granted: 1978-03-07
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Expires: 1996-09-07
Abstract
Abstract This invention relates to an improved combustor liner for a gas turbine power plant which liner is constructed from a plurality of louvers that include a lip and cooling means for defining a cooling film of air flow adjacent the liner. Means are provided for preventing lip closure which in turn is detrimental to film cooling.
Inventors
- 👤 Francis C. Pane
- 👤 Domingo Sepulveda
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 20:29
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/06; F23R3/08
Claims Analysis
Total Claims: 4
Claim 1
Independent Claim
181 words
For a louver constructed liner for a gas turbine power plant combustor that has a hot wall portion and a cooler wall portion, the hot wall portion subjected to gases of combustion, the opposing cool wall portion subjected to cooling air flow, a lip on the downstream end of the louver overlying and spaced from the adjacent downstream louver on the hot wall portion, cooling air holes in a bent portion of the louver upstream of the lip to flow a film of cool air on the inner wall of the louver opposing the lip, dimple means formed in said cool wall portion for limiting the deflection of the lip, said dimple means spaced laterally in the cool air film and extending from the cool wall portion and terminating short of the opposing wall, and apertures formed on the downstream wall of said dimple means for flowing cool air immediately downstream of said dimple means relative to the flow of cool air so that when said opposing wall portion abuts said dimple means liner burning at this point does not ensue.
Claim 2
Dependent Claim
181 words
For a louver constructed liner for a gas turbine power plant combustor that has a hot wall portion and a cooler wall portion, the hot wall portion subjected to gases of combustion, the opposing cool wall portion subjected to cooling air flow, a lip on the downstream end of the louver overlying and spaced from the adjacent downstream louver on the hot wall portion, cooling air holes in a bent portion of the louver upstream of the lip to flow a film of cool air on the inner wall of the louver opposing the lip, dimple means formed in said cool wall portion for limiting the deflection of the lip, said dimple means spaced laterally in the cool air film and extending from the cool wall portion and terminating short of the opposing wall, and apertures formed on the downstream wall of said dimple means for flowing cool air immediately downstream of said dimple means relative to the flow of cool air so that when said opposing wall portion abuts said dimple means liner burning at this point does not ensue.
Claim 3
Dependent Claim
15 words
For a louver constructed liner as in claim 1 wherein said apertures are drilled holes.
Claim 4
Dependent Claim
16 words
For a louver constructed liner of claim 1 wherein said apertures are integral with said dimple.
References Cited (Backward Citations)
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Cited
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US2840989A
Cited
US2884759A
Cited
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Cited
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Cited
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Cited
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Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1981-03-06 | 1981-09-05 | 1982-03-07 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-03-06 | 1985-09-05 | 1986-03-07 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-03-06 | 1989-09-05 | 1990-03-07 | $7700.00 | Window Closed / Lapsed |