US4914918A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Combustor segmented deflector
Assignee: RTX Corp
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Filing: 1988-09-26
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Granted: 1990-04-10
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Expires: 2008-09-26
Abstract
Abstract A deflector assembly (20) includes an annular plate portion (28) with pairs of parallel substantially radial slots (30). Truncated pie shaped segments (34) are secured (32, 36) to the plate with cooling air (40, 52) directed between the segments and the plate. Extended cooling surface (48) increases the cooling effect of the airflow. The segments are free from thermal fight and direct the discharged cooling air to help cool the remaining exposed bulkhead surface or shield.
Inventors
- 👤 Dennis J. Sullivan
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 08:12
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23R; F23R3/00; F23R3/02; F23R3/04; F23R3/10; F23R3/28; F23R3/283; F05; F05B; F05B2260/00; F05B2260/20
Claims Analysis
Total Claims: 12
Claim 1
Independent Claim
119 words
In a gas turbine engine including a combustor, a bulkhead interposed between an air supply chamber and said combustor, at least one opening through said bulkhead, a fuel injector located in said opening and arranged to inject fuel into said combustor, a heat shielded deflector assembly comprising: a deflector base secured to said bulkhead within said opening and surrounding said fuel injector; said base having an annular plate portion extending radially outward from said fuel injector and substantially parallel to said bulkhead within said combustor; a plurality of circumferentially divided heat shield segments secured to said annular plate portion and located on the combustor side thereof; and retention means for axially restraining each segment to said annular plate portion.
Claim 2
Dependent Claim
119 words
In a gas turbine engine including a combustor, a bulkhead interposed between an air supply chamber and said combustor, at least one opening through said bulkhead, a fuel injector located in said opening and arranged to inject fuel into said combustor, a heat shielded deflector assembly comprising: a deflector base secured to said bulkhead within said opening and surrounding said fuel injector; said base having an annular plate portion extending radially outward from said fuel injector and substantially parallel to said bulkhead within said combustor; a plurality of circumferentially divided heat shield segments secured to said annular plate portion and located on the combustor side thereof; and retention means for axially restraining each segment to said annular plate portion.
Claim 3
Dependent Claim
48 words
A heat shielded deflector assembly as in claim 1, said retention means comprising: at least one substantially radially extending slot in said annular plate portion extending to the outer edge thereof for each heat shield segment; and at least one T-shaped lug on each segment engaging said slot.
Claim 4
Dependent Claim
51 words
A heat shielded deflector assembly as in claim 2, said retention means comprising: a plurality of parallel substantially radially extending slots in said annular plate portion extending to the outer edge thereof for each heat shield segment; and a plurality of T-shaped lugs on each segment engaging said plurality of slots.
Claim 5
Dependent Claim
37 words
A heat shielded deflector assembly as in claim 2, having also: a segment keeper comprising a ring located between said annular plate portion and said bulkhead and circumferentially surrounding at least a portion of each T-shaped lug.
Claim 6
Dependent Claim
37 words
A heat shielded deflector assembly as in claim 3, having also: a segment keeper comprising a ring located between said annular plate portion and said bulkhead and circumferentially surrounding at least a portion of each T-shaped lug.
Claim 7
Dependent Claim
65 words
A heat shielded deflector assembly as in claim 1: said segments secured with an air space between each segment and said annular plate; an air supply opening through said deflector base in fluid communication with said air chamber and with said air space behind each segment; and air passages between each of said segments and said annular plate for discharging air from said air space.
Claim 8
Dependent Claim
45 words
A heat shielded deflector assembly as in claim 6: said segments each having an inner lip along the radially inward edge in substantial contact with said annular plate; and said air supply opening in fluid communication with said air space adjacent to said inner lip.
Claim 9
Dependent Claim
28 words
A heat shielded deflector assembly as in claim 7: each segment having on the surface facing said annular plate extended heat transfer surface extending into said air space.
Claim 10
Dependent Claim
17 words
A heat shielded deflector assembly as in claim 8: said extended heat transfer surface comprising longitudinal ridges.
Claim 11
Dependent Claim
35 words
A heat shielded deflector assembly as in claim 9: said longitudinal ridges being wedge shaped to an extent which provides uniform space and flow area between said ridges throughout the radial length of said ridges.
Claim 12
Dependent Claim
31 words
A heat shielded deflector assembly as in claim 10: each segment having a radially elongated edge lip on each radial edge of said segment in substantial contact with said annular plate.
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) | 1993-04-09 | 1993-10-09 | 1994-04-10 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1997-04-09 | 1997-10-09 | 1998-04-10 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2001-04-09 | 2001-10-09 | 2002-04-10 | $7700.00 | Window Closed / Lapsed |