Patent US4388387A successfully refreshed from Google Patents.
Patent US4062190A successfully refreshed from Google Patents.
US4062190A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas turbine engine
Assignee: Rolls Royce PLC
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Filing: 1975-03-12
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Granted: 1977-12-13
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Expires: 1995-03-12
Abstract
Abstract A heat input device for a heat engine comprises a combustion device which is adapted to support surface burning of a fuel and oxidant mixture and a heat exchanger which is adapted to transfer the heat from the hot surface against which the surface burning takes place to the working fluid of the engine.
Inventors
- 👤 Lindsay Grahame Dawson
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 19:46
CPC Classifications
F; F02; F02C; F02C1/00; F02C1/04; F02C1/05; F02C1/06; F02C7/00; F02C7/08; F02C7/10; F02C7/105; F02G; F02G1/00; F23; F23R; F23R3/00; F23R3/005; F02G2258/00; F02G2258/10
Claims Analysis
Total Claims: 14
Claim 1
Independent Claim
100 words
A system of the type comprising, in combustion, a heat engine and a heat input device, said heat engine having a gas working fluid wherein: said heat input device comprises a unitary heat exchange body having an extended surface against which surface burning of a fuel and oxidant mixture can take place, and a heat exchange surface forming part of the heat exchange body and in thermal contact with the extended surface, said heat exchange surface being directly heated by conduction of heat from the extended surface and adapted to transfer this heat to the working fluid of the engine.
Claim 2
Independent Claim
100 words
A system of the type comprising, in combustion, a heat engine and a heat input device, said heat engine having a gas working fluid wherein: said heat input device comprises a unitary heat exchange body having an extended surface against which surface burning of a fuel and oxidant mixture can take place, and a heat exchange surface forming part of the heat exchange body and in thermal contact with the extended surface, said heat exchange surface being directly heated by conduction of heat from the extended surface and adapted to transfer this heat to the working fluid of the engine.
Claim 3
Dependent Claim
14 words
The system of claim 1 wherein said heat engine comprises a Stirling cycle engine.
Claim 4
Dependent Claim
14 words
The system of claim 1 wherein said heat engine comprises a gas turbine engine.
Claim 5
Dependent Claim
68 words
The system of claim 3 wherein said gas turbine engine comprises a compressor, a combustion system and a turbine, the compressor and turbine being drivingly interconnected and the combustion system being adapted to heat compressed gas from the compressor before it passes through the turbine to drive the turbine, the combustion system also comprising means within which said surface burning of a fuel oxidant mixture may take place.
Claim 6
Dependent Claim
23 words
The system of claim 4 wherein said gas is air, and the airflow through the engine provides the oxidant for said surface burning.
Claim 7
Dependent Claim
38 words
The system of claim 5 wherein the compressed air from the compressor is heated by heat exchange in the combustion system before passing through the turbine, exhaust air from the turbine providing the oxidant for the surface burning.
Claim 8
Independent Claim
25 words
The system of further comprising a heat exchanger adapted to exchange heat between the exhaust of the surface burning device and the compressor delivery air.
Claim 9
Independent Claim
25 words
The system of further comprising a heat exchanger adapted to exchange heat between the exhaust of the surface burning device and the compressor delivery air.
Claim 10
Dependent Claim
18 words
The improvement of claim 11 wherein said surface burning takes place within a matrix having an extended surface.
Claim 11
Dependent Claim
15 words
The improvement of claim 8 wherein said matrix comprises a cylindrical bundle of fine tubes.
Claim 12
Dependent Claim
43 words
The improvement of claim 9 wherein said cylindrical bundle is rotatable about its axis and said surface burning takes place within a segment of the cylinder, the remainder of the bundle being used to exchange heat with the working fluid of the engine.
Claim 13
Dependent Claim
97 words
In a system of the type including a heat engine and a surface burning heat input device the improvement wherein said surface burning heat input device comprises: a unitary heat exchange body having an extended surface against which surface burning of a fuel and oxidant mixture can take place, and a heat exchange surface forming part of the heat exchange body and in thermal contact with the extended surface, said heat exchange surface being directly heated by conduction of heat from the extended surface and adapted to transfer this heat to the working fluid of the engine.
Claim 14
Dependent Claim
97 words
In a system of the type including a heat engine and a surface burning heat input device the improvement wherein said surface burning heat input device comprises: a unitary heat exchange body having an extended surface against which surface burning of a fuel and oxidant mixture can take place, and a heat exchange surface forming part of the heat exchange body and in thermal contact with the extended surface, said heat exchange surface being directly heated by conduction of heat from the extended surface and adapted to transfer this heat to the working fluid of the engine.
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USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1980-12-12 | 1981-06-13 | 1981-12-13 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1984-12-12 | 1985-06-13 | 1985-12-13 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1988-12-12 | 1989-06-13 | 1989-12-13 | $7700.00 | Window Closed / Lapsed |