Patent US3800864A successfully refreshed from Google Patents.
US3800864A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Pin-fin cooling system
Assignee: General Electric Co
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Filing: 1972-09-05
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Granted: 1974-04-02
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Expires: 1992-09-05
Abstract
Abstract A fluid cooled element for partially defining a hot gas flow path within a gas turbine engine is provided with a cooling system incorporating a plurality of pin-fins or similar protuberances disposed upon a face of the wall bounding the hot gas passage. The face and an associated liner combine to define a cooling fluid plenum adjacent the wall, with the protuberances extending into the plenum. The liner bounds a cooling fluid passage, and an aperture is provided for introducing cooling fluid from the passage into the plenum. Another aperture is provided for exhausting cooling fluid from the plenum - into the hot gas passage, for example. The plenum can be divided into a plurality of independently cooled compartments by means of ribs extending substantially between the aforementioned cooled face of the wall and the liner. The protuberances can be arranged in greater densities per unit area in areas where heat concentrations exist in order to reduce temperature gradients. Furthermore, the apertures for introducing and exhausting cooling fluid to and from the plenum may be sized and positioned to concentrate greater quantities of fluid upon areas of heat concentrations.
Inventors
- 👤 A Hauser
- 👤 T Zuxier
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-26 23:30
CPC Classifications
F; F28; F28F; F28F3/00; F28F3/02; F28F3/022; F01; F01D; F01D25/00; F01D25/08; F01D25/12; F05; F05D; F05D2240/00; F05D2240/80; F05D2240/81; F05D2260/00; F05D2260/20; F05D2260/221; F05D2260/2212; Y; Y02; Y02T; Y02T50/00; Y02T50/60
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
96 words
A fluid-cooled element for partially defining a hot gas passage within a gas turbine engine, said element comprising: a wall having first and second faces, the first face bounding the hot gas passage and the second face partially defining a cooling fluid plenum; means for introducing cooling fluid into the plenum; and a plurality of pin-fins cooperating with the second face for promoting turbulence within the cooling fluid in the plenum for increasing heat transfer from the wall to the cooling fluid, the pin-fins comprising discrete, generally cylindrical protuberances extending a predetermined distance into the plenum.
Claim 2
Dependent Claim
96 words
A fluid-cooled element for partially defining a hot gas passage within a gas turbine engine, said element comprising: a wall having first and second faces, the first face bounding the hot gas passage and the second face partially defining a cooling fluid plenum; means for introducing cooling fluid into the plenum; and a plurality of pin-fins cooperating with the second face for promoting turbulence within the cooling fluid in the plenum for increasing heat transfer from the wall to the cooling fluid, the pin-fins comprising discrete, generally cylindrical protuberances extending a predetermined distance into the plenum.
Claim 3
Dependent Claim
71 words
The element of claim 1 wherein said wall is subjected to localized heat concentrations; and said pin-fins are arranged in a predetermined array corresponding to said heat concentrations, a greater number of pin-fins per unit area in the vicinity of said heat concentrations than in areas remote from said heat concentrations whereby heat transfer between said wall and said cooling fluid is locally adjustable to reduce temperature gradients within said wall.
Claim 4
Dependent Claim
23 words
The element of claim 1 further including means for exhausting cooling fluid from said plenum and directing said fluid over said first face.
Claim 5
Dependent Claim
23 words
The element of claim 3 wherein said means for introducing and said means for exhausting are laterally and radially spaced from one another.
Claim 6
Dependent Claim
17 words
The element of claim 4 wherein said lateral spacing is substantially axial of said hot gas passage.
Claim 7
Dependent Claim
25 words
The element of claim 5 wherein said means for introducing is axially upstream of said means for exhausting, whereby parallel flow heat exchange is achieved.
Claim 8
Dependent Claim
24 words
The element of claim 5 wherein said means for introducing is axially downstream of said means for exhausting, whereby counterflow heat exchange is achieved.
Claim 9
Dependent Claim
54 words
The element of claim 3 wherein said plenum is divided into a plurality of compartments substantially isolated from one another, each of said compartments having means for introducing and means for exhausting said cooling fluid, whereby the quantity of cooling fluid supplied to each of said compartments may be determined independently of the others.
Claim 10
Dependent Claim
78 words
The element of claim 8 further including: a liner spaced from said second face and partially defining the plenum; a plurality of ribs extending substantially between said wall and said liner defining said compartments; and a cooling fluid passage bounded by said liner; and wherein said means for introducing comprises a first aperture communicating said plenum with said cooling fluid passage and said means for exhausting comprises a second aperture communicating said plenum with said hot gas passage.
Claim 11
Dependent Claim
35 words
The element of claim 9 wherein said first apertures are non-uniform in size and said second apertures are non-uniform in size, whereby different quantities of cooling fluid may be supplied to individuals of said compartments.
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) | 1977-04-01 | 1977-10-01 | 1978-04-02 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-04-01 | 1981-10-01 | 1982-04-02 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-04-01 | 1985-10-01 | 1986-04-02 | $7700.00 | Window Closed / Lapsed |