US3843309A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Liquid fuel grid burner for vitiated air using auxiliary combustion air
Assignee: General Electric Co
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Filing: 1973-03-07
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Granted: 1974-10-22
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Expires: 1993-03-07
Abstract
Abstract A grid burner suitable for combustion of liquid fuel in vitiated air with auxiliary combustion air. Rows of auxiliary combustion air supply pipes support spaced fuel nozzles supplied by inner fuel pipes. Burner wings supported by the auxiliary air pipes include openings to direct vitiated air and auxiliary air into the combustion zone to provide the proper combustion and cooling patterns.
Inventors
- 👤 S Lambiris
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-07 23:04
CPC Classifications
F; F23; F23C; F23C99/00; F23B; F23B5/00; F23B2700/00; F23B2700/022; F23C2700/00; F23C2700/02; F23C2700/023; F23D; F23D2900/00; F23D2900/21; F23D2900/21003; Y; Y02; Y02E; Y02E20/00; Y02E20/34
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
176 words
In a grid burner having a plurality of spaced burner elements and adapted for flow of vitiated air past said burner elements to be heated thereby, the combination of: an auxiliary air pipe connected to a source of auxiliary combustion air at a pressure slightly above that of said vitiated air, a fuel supply and nozzle assembly adapted to be withdrawn from said auxiliary air pipe and comprising a plurality of spaced fuel nozzles interconnected by fuel supply pipe sections, the fuel nozzles disposed entirely within the auxiliary air pipe, at least one elongated wing member supported by and spaced from said auxiliary air pipe, said wing member being formed with inner leg portions to provide elongated vitiated air supply passages on either side adjacent said auxiliary pipe and also having outwardly diverging outer leg portions providing a shielded circulation zone, said pipe and said wing member each having openings concentric with and downstream from each of said fuel nozzles to admit annular sheaths of auxiliary and vitiated air respectively around the fuel from said nozzle.
Claim 2
Dependent Claim
176 words
In a grid burner having a plurality of spaced burner elements and adapted for flow of vitiated air past said burner elements to be heated thereby, the combination of: an auxiliary air pipe connected to a source of auxiliary combustion air at a pressure slightly above that of said vitiated air, a fuel supply and nozzle assembly adapted to be withdrawn from said auxiliary air pipe and comprising a plurality of spaced fuel nozzles interconnected by fuel supply pipe sections, the fuel nozzles disposed entirely within the auxiliary air pipe, at least one elongated wing member supported by and spaced from said auxiliary air pipe, said wing member being formed with inner leg portions to provide elongated vitiated air supply passages on either side adjacent said auxiliary pipe and also having outwardly diverging outer leg portions providing a shielded circulation zone, said pipe and said wing member each having openings concentric with and downstream from each of said fuel nozzles to admit annular sheaths of auxiliary and vitiated air respectively around the fuel from said nozzle.
Claim 3
Dependent Claim
58 words
The combination according to claim 1, wherein said wing member is substantially W-shaped and wherein the inner legs of said W are provided with a first group of longitudinally spaced vitiated air admission openings, whereby vitiated air can flow from said elongated viatiated air supply passages through said first openings along the outer legs of the wing member.
Claim 4
Dependent Claim
30 words
The combination according to claim 2, wherein said wing members include a second group of vitiated air admission openings spaced substantially midway along the outer legs of said wing member.
Claim 5
Dependent Claim
85 words
The combination according to claim 1, wherein said wing member is substantially W-shaped, the inner legs of said W being provided with a first group of longitudinally spaced vitiated air admission openings, whereby vitiated air can flow from said elongated vitiated air supply passages through said first openings along the outer legs of the wing member, and wherein said outer legs of said wing member are provided with a second group of longitudinally spaced vitiated air admission openings disposed substatially midway on said outer legs.
Claim 6
Dependent Claim
42 words
The combination according to claim 1, wherein said fuel nozzle assembly includes a plurality of fuel manifolds furnished with locating means to position the manifolds within the auxiliary air pipe, said locating means permitting withdrawal of the assembly longitudinally through said pipe.
References Cited (Backward Citations)
No citation records indexed.
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-10-21 | 1978-04-22 | 1978-10-22 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-10-21 | 1982-04-22 | 1982-10-22 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-10-21 | 1986-04-22 | 1986-10-22 | $7700.00 | Window Closed / Lapsed |