US3896875A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Heat exchanger for gas turbine engines
Assignee: Individual
•
Filing: 1973-05-14
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Granted: 1975-07-29
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Expires: 1993-05-14
Abstract
Abstract The heat exchanger of the present invention includes a first and second matrix mounted for free rotation about the main shaft of the gas turbine. The first matrix is in contact with compressed air from the turbine compressor and the second matrix is in contact with the exhaust gases of the turbine. Each matrix includes a plurality of air passageways for flow therethrough of the respective contacting gases. Additionally each matrix includes at least one and preferably a plurality of fluid chambers positioned perpendicularly to the passageways wherein each chamber is in communication with an associated fluid chamber of the other matrix. Each fluid chamber includes a fluid which is vaporizable in the second matrix to extract thermal energy therefrom and which condenses in the first matrix to release thermal energy thereto to preheat the compressor air.
Inventors
- 👤 Stephen R Bolger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 14:46
CPC Classifications
F; F28; F28D; F28D19/00; F02; F02C; F02C7/00; F02C7/08; F02C7/10; F28D15/00; F28D15/02; F28D15/0208; F28D15/0275; F28F; F28F3/00; F28F3/08; F28F3/10
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
97 words
A heat exchanger for gas turbine engines comprising: a first and second matrix mounted for rotation about a main shaft of said turbine, said first matrix being in contact with gas from the compressor of said turbine and said second matrix in contact with exhaust gas, each of said matrices including a plurality of passageways for passage therethrough of the respective contacting gases, and at least one fluid chamber, said fluid chamber being in communication with an associated chamber of the other matrix and having a thermal transfer fluid contained therein vaporizable at below exhaust gas temperature.
Claim 2
Dependent Claim
97 words
A heat exchanger for gas turbine engines comprising: a first and second matrix mounted for rotation about a main shaft of said turbine, said first matrix being in contact with gas from the compressor of said turbine and said second matrix in contact with exhaust gas, each of said matrices including a plurality of passageways for passage therethrough of the respective contacting gases, and at least one fluid chamber, said fluid chamber being in communication with an associated chamber of the other matrix and having a thermal transfer fluid contained therein vaporizable at below exhaust gas temperature.
Claim 3
Dependent Claim
61 words
A heat exchanger as set forth in claim 1 wherein: said first and second matrices are radially offset from each other and mounted to a mounting plate for said first and second matrices and adapted for rotation about said shaft, said fluid chamber of each matrix being axially aligned with said shaft and said passageways being radially aligned with said shaft.
Claim 4
Dependent Claim
32 words
A heat exchanger as set forth in claim 1 wherein each matrix includes a plurality of fluid chambers, each fluid chamber being in communication with an associated chamber of the other matrix.
Claim 5
Dependent Claim
18 words
A heat exchanger as set forth in claim 2 wherein said fluid chambers of each matrix are interconnected.
Claim 6
Dependent Claim
96 words
A heat exchanger as set forth in claim 2 wherein: first and second matrices comprise a plurality of alternately mounted first and second annular discs, said first and second discs including a plurality of radially extending elongated openings adapted to cooperatively form a plurality of fluid chambers when mounted together, and a plurality of openings radially aligned between alternate elongated openings, the openings of one of said discs adapted to overlie at least two openings of said other disc to form upon mounting passageways extending from the inner circumference to the outer circumference of the matrices.
Claim 7
Dependent Claim
30 words
A heat exchanger as set forth in claim 2 wherein said mounting plate includes at least one opening to provide associated communication between the fluid chambers of the respective matrices.
Claim 8
Dependent Claim
40 words
A heat exchanger as set forth in claim 1 wherein: said first and second matrices are of an annular configuration and wherein said fluid chambers are radially aligned to said shaft and said passageways are axially aligned with said shaft.
Claim 9
Dependent Claim
41 words
A heat exchanger as set forth in claim 7 comprising: a plurality of first and second annular discs, said first matrix comprising an inner radial portion of said discs and said second matrix comprising an outer radial portion of said discs.
Claim 10
Dependent Claim
24 words
A fluid chamber as set forth in claim 7 wherein said air passageways are axially positioned to provide a counterflow of the respective gases.
Claim 11
Dependent Claim
89 words
A gas turbine heat exchanger comprising: a first and second matrix mounted for rotation within said turbine, said first matrix being in contact with gas from a compressor of said turbine and said second matrix in contact with exhaust gas, each of said matrices including a plurality of passageways for passage therethrough of the respective contacting gases, and at least first and second fluid chambers, each of said fluid chambers being in communication with an associated chamber of the other matrix and having contained therein a thermal transfer fluid.
Claim 12
Dependent Claim
89 words
A gas turbine heat exchanger comprising: a first and second matrix mounted for rotation within said turbine, said first matrix being in contact with gas from a compressor of said turbine and said second matrix in contact with exhaust gas, each of said matrices including a plurality of passageways for passage therethrough of the respective contacting gases, and at least first and second fluid chambers, each of said fluid chambers being in communication with an associated chamber of the other matrix and having contained therein a thermal transfer fluid.
Claim 13
Dependent Claim
25 words
A gas turbine heat exchanger as set forth in claim 10 wherein each matrix includes a plurality of at least first and second fluid chambers.
Claim 14
Dependent Claim
31 words
A gas turbine heat exchanger as set forth in claim 10 wherein said first fluid chamber of one matrix is in communication with said second fluid chamber of said other matrix.
Claim 15
Dependent Claim
48 words
A gas turbine heat exchanger as set forth in claim 10 including a mounting plate for mounting said first and second matrices and having at least first and second openings for connecting said first fluid chamber of One matrix with said second fluid chamber of said other matrix.
Claim 16
Dependent Claim
52 words
A gas turbine heat exchanger as set forth in claim 11 including a mounting plate for mounting said first and second matrices and having a plurality of at least first and second radial openings for connecting said first fluid chambers of one matrix with associated second fluid chambers of said other matrix.
Claim 17
Dependent Claim
62 words
A gas turbine heat exchanger as set forth in claim 14 wherein said mounting plate includes at least two annular channels on each side for interconnecting each of the first fluid chambers and for interconnecting each of the second fluid chambers, said first radial opening connecting said first annular channel of one matrix with said second annular channel of said other matrix.
References Cited (Backward Citations)
US3266564A
Cited
US3811495A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1978-07-28 | 1979-01-27 | 1979-07-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1982-07-28 | 1983-01-27 | 1983-07-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1986-07-28 | 1987-01-27 | 1987-07-29 | $7700.00 | Window Closed / Lapsed |