US5319923A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Air staged premixed dry low NOx combustor
Assignee: General Electric Co
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Filing: 1993-02-26
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Granted: 1994-06-14
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Expires: 2013-02-26
Abstract
Abstract An air staged premixed dry low NO x combustor of the type that is constructed of a premixing chamber and a centerbody porous plug premixed flame stabilizer. Such structures of this type maintain very low flame temperatures and, ultimately, low NO x emissions.
Inventors
- 👤 Gary L. Leonard
- 👤 Shiro G. Kimura
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 21:14
CPC Classifications
F; F23; F23R; F23R3/00; F23R3/02; F23R3/16; F23C; F23C7/00; F23C7/02; F23C7/06; F23D; F23D14/00; F23D14/26; F23M; F23M5/00; F23M5/08; F23M5/085; F23R3/18; F23R3/22; F23R3/28; F23R3/286; F23R2900/00; F23R2900/03343
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
107 words
An air staged premixed low NO x combustor, said combustor comprised of: a combustion chamber means; a fuel introduction means located adjacent to said combustion chamber means; an air introduction means located adjacent to said fuel introduction means; a premixing chamber means located adjacent said fuel introduction means for mixing said fuel and air; a fuel and air swirler means located adjacent said premixing chamber means; a fuel/air control passage means located adjacent said swirler means; and a porous flame stabilizer means located adjacent said passage means and also located substantially within said combustion chamber such that fuel and air pass through said porous flame stabilizer means.
Claim 2
Dependent Claim
107 words
An air staged premixed low NO x combustor, said combustor comprised of: a combustion chamber means; a fuel introduction means located adjacent to said combustion chamber means; an air introduction means located adjacent to said fuel introduction means; a premixing chamber means located adjacent said fuel introduction means for mixing said fuel and air; a fuel and air swirler means located adjacent said premixing chamber means; a fuel/air control passage means located adjacent said swirler means; and a porous flame stabilizer means located adjacent said passage means and also located substantially within said combustion chamber such that fuel and air pass through said porous flame stabilizer means.
Claim 3
Dependent Claim
38 words
The combustor, according to claim 1, wherein said combustion chamber is further comprised of: a shell having a thermal barrier coating; and a liner having a thermal barrier coating wherein said liner is located adjacent to said shell.
Claim 4
Dependent Claim
19 words
The combustor, according to claim 1, wherein said fuel introduction means is further comprised of: a fuel manifold means.
Claim 5
Dependent Claim
58 words
The combustor, according to claim 2, wherein said air introduction means is further comprised of: an air passage means located adjacent to said fuel introduction means and which is regulated by the position of said flame stabilizer means; and an air flow dilution means located on said shell at a predetermined distance away from said air controller means.
Claim 6
Dependent Claim
13 words
The combustor, according to claim 1, wherein said premixing chamber means is annular.
Claim 7
Dependent Claim
12 words
The combustor, according to claim 1, wherein said passage means is adjustable.
Claim 8
Dependent Claim
28 words
The combustor, as in claim 1, wherein said stabilizer means is further comprised of: an actuator means; and a porous plate means operatively connected to said actuator means.
References Cited (Backward Citations)
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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) | 1997-06-13 | 1997-12-13 | 1998-06-14 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 2001-06-13 | 2001-12-13 | 2002-06-14 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2005-06-13 | 2005-12-13 | 2006-06-14 | $7700.00 | Window Closed / Lapsed |