Patent US3589128A successfully refreshed from Google Patents.
US3589128A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Cooling arrangement for a reverse flow gas turbine combustor
Assignee: Avco Corp
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Filing: 1970-02-02
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Granted: 1971-06-29
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Expires: 1990-02-02
Abstract
Abstract The compressed airflow for the compressor of a gas turbine engine is initially contra to the direction of flow of the combustion gases and is scooped and turned before entering the combustion chamber. The combustion chamber liner is comprised of telescoping combustor sections, each downstream section overlapping an upstream section. The adjacent sections are rigidly interconnected by means of an annular joint which provides an inlet scoop for the compressed air, a mixing chamber, and an annular efflux area for discharging air into the combustion chamber. The scoop is formed by corrugations on the joint welded to the outer periphery of the downstream section. The mixing chamber and efflux area are formed by welding the other end of the joint to the outer periphery of the upstream section.
Inventors
- 👤 Ervin J Sweet
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 08:38
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/42; F23R3/54; F23R3/02; F23R3/04; F23R3/06; F23R3/08
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
143 words
In a combustor having axially extending upstream and downstream telescoping annular sections, said downstream section overlapping the upstream section, an annular axially extending joint surrounding the overlapping portions of said telescoped sections, said joint rigidly interconnecting said sections, the periphery of one end of said joint being bonded to the outer periphery of the upstream sections, the other end of said joint being provided with dimples bonded to the outer periphery of said downstream section, the space between said dimples providing a scoop for cooling gases flowing around the outer periphery of said combustor in a direction contra to the flow of gases in said combustor, the space between said joint and said upstream section providing a mixing chamber for said cooling gases, the space between the overlapped portions of said telescoped sections providing an uninterrupted annular efflux area for said cooling gases.
Claim 2
Dependent Claim
143 words
In a combustor having axially extending upstream and downstream telescoping annular sections, said downstream section overlapping the upstream section, an annular axially extending joint surrounding the overlapping portions of said telescoped sections, said joint rigidly interconnecting said sections, the periphery of one end of said joint being bonded to the outer periphery of the upstream sections, the other end of said joint being provided with dimples bonded to the outer periphery of said downstream section, the space between said dimples providing a scoop for cooling gases flowing around the outer periphery of said combustor in a direction contra to the flow of gases in said combustor, the space between said joint and said upstream section providing a mixing chamber for said cooling gases, the space between the overlapped portions of said telescoped sections providing an uninterrupted annular efflux area for said cooling gases.
Claim 3
Dependent Claim
175 words
In a gas turbine engine having a reverse flow combustor, said combustor being supplied with compressed air flowing in a direction opposite to the flow of combustion gases in said combustor, said combustor comprising at least first and second telescoped sections, said sections being oriented in the direction of flow of said combustion gases, said first section being upstream of and overlapped by said second section, a joint rigidly interconnecting said first and second sections, said joint surrounding the overlapped pOrtions of said telescoped sections, the periphery of one end of said joint being bonded to the outer periphery of said first section, the other end of said joint being corrugated, the valleys of said corrugations being bonded to the outer periphery of said second section, the space between said corrugations providing a scoop for compressed air, the space between said joint and said first section providing a mixing chamber for scooped compressed air, and the space between the overlapping portions of said telescoped sections providing an uninterrupted annular efflux area for said compressed air.
Claim 4
Dependent Claim
175 words
In a gas turbine engine having a reverse flow combustor, said combustor being supplied with compressed air flowing in a direction opposite to the flow of combustion gases in said combustor, said combustor comprising at least first and second telescoped sections, said sections being oriented in the direction of flow of said combustion gases, said first section being upstream of and overlapped by said second section, a joint rigidly interconnecting said first and second sections, said joint surrounding the overlapped pOrtions of said telescoped sections, the periphery of one end of said joint being bonded to the outer periphery of said first section, the other end of said joint being corrugated, the valleys of said corrugations being bonded to the outer periphery of said second section, the space between said corrugations providing a scoop for compressed air, the space between said joint and said first section providing a mixing chamber for scooped compressed air, and the space between the overlapping portions of said telescoped sections providing an uninterrupted annular efflux area for said compressed air.
Claim 5
Dependent Claim
183 words
In a gas turbine engine having a cylindrical combustor, a casing spaced from and surrounding said combustor, the space between said casing and said combustor providing a passageway for compressed air, said compressed air flowing in a direction opposite to that of the combustion gases within said combustor, said combustor comprising at least first and second telescoped sections, said first section being overlapped by said second section; a joint rigidly interconnecting said first and second sections, said joint surrounding the overlapped portions of said telescoped sections, the periphery of one end of said joint being bonded to the outer periphery of said first section, the other end of said joint being corrugated, the valleys of said corrugations being bonded to the outer periphery of said second section, the space between said corrugations providing a scoop in said passageway for scooping compressed air into said combustor, the space between said joint and said first section providing a mixing chamber for scooped compressed air, and the space between the overlapping portions of said telescoped sections providing an uninterrupted annular efflux area for said compressed air.
Claim 6
Dependent Claim
183 words
In a gas turbine engine having a cylindrical combustor, a casing spaced from and surrounding said combustor, the space between said casing and said combustor providing a passageway for compressed air, said compressed air flowing in a direction opposite to that of the combustion gases within said combustor, said combustor comprising at least first and second telescoped sections, said first section being overlapped by said second section; a joint rigidly interconnecting said first and second sections, said joint surrounding the overlapped portions of said telescoped sections, the periphery of one end of said joint being bonded to the outer periphery of said first section, the other end of said joint being corrugated, the valleys of said corrugations being bonded to the outer periphery of said second section, the space between said corrugations providing a scoop in said passageway for scooping compressed air into said combustor, the space between said joint and said first section providing a mixing chamber for scooped compressed air, and the space between the overlapping portions of said telescoped sections providing an uninterrupted annular efflux area for said compressed 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) | 1974-06-28 | 1974-12-28 | 1975-06-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1978-06-28 | 1978-12-28 | 1979-06-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1982-06-28 | 1982-12-28 | 1983-06-29 | $7700.00 | Window Closed / Lapsed |