US3830620A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas burner for heat-recovery steam generator
Assignee: General Electric Co
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Filing: 1972-02-22
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Granted: 1974-08-20
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Expires: 1992-02-22
Abstract
Abstract A gas burner comprising a straight main burner pipe with imperforate horizontal wing baffles extending diametrically thereform. The downstream side of the pipe is formed with a number of fuel holes. Some fuel is fed directly toward an exhaust gas recirculation pattern while the remaining fuel is distributed laterally of the recirculation pattern toward an updraft of exhaust gas. A second manifold pipe having a longitudinal row of fuel distribution holes provides uniform fuel distribution in the main pipe.
Inventors
- 👤 F Martin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 16:07
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/46; F23D14/70; F23D14/02; F23D14/04; F23D14/045; F23D14/20; F23D14/34; F23D2900/00; F23D2900/21; F23D2900/21003
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
160 words
A gas burner for heating an exhaust gas flow in a vitiated air environment comprising: an elongated gas burner pipe; at least one pair of oppositely directed, imperforate, horizontal wing baffles attached to said burner pipe, adapted to be perpendicular to said exhaust gas flow for directing a portion of said exhaust gas flow into a recirculation pattern downstream from said burner pipe; flame stabilization fuel ports on the downstream circumference of the burner pipe for ejecting fuel into the recirculation pattern forming a first combustible mixture; and, main fuel ports on the downstream circumference of the burner pipe for ejecting fuel laterally beyond the recirculation pattern into the exhaust gas flow forming a second combustible mixture; said flame stabilization ports and said main fuel ports symmetrical with respect to the vertical centerline of the burner pipe; and, said flame stabilization ports circumferentially nearer the vertical centerline of the burner pipe and smaller in diameter than the main fuel ports.
Claim 2
Dependent Claim
160 words
A gas burner for heating an exhaust gas flow in a vitiated air environment comprising: an elongated gas burner pipe; at least one pair of oppositely directed, imperforate, horizontal wing baffles attached to said burner pipe, adapted to be perpendicular to said exhaust gas flow for directing a portion of said exhaust gas flow into a recirculation pattern downstream from said burner pipe; flame stabilization fuel ports on the downstream circumference of the burner pipe for ejecting fuel into the recirculation pattern forming a first combustible mixture; and, main fuel ports on the downstream circumference of the burner pipe for ejecting fuel laterally beyond the recirculation pattern into the exhaust gas flow forming a second combustible mixture; said flame stabilization ports and said main fuel ports symmetrical with respect to the vertical centerline of the burner pipe; and, said flame stabilization ports circumferentially nearer the vertical centerline of the burner pipe and smaller in diameter than the main fuel ports.
Claim 3
Dependent Claim
41 words
The gas burner as recited in claim 15 wherein a fuel distribution manifold pipe, having spaced fuel holes along its length, is positioned within the burner pipe for assuring uniform distribution of gas fuel to the interior of the burner pipe.
Claim 4
Dependent Claim
31 words
The gas burner as recited in claim 15 wherein the flame stabilization ports are displaced circumferentially on the order of 30* from either side of the vertical centerline of the pipe.
Claim 5
Dependent Claim
31 words
The gas burner as recited in claIm 15 wherein the main fuel ports are displaced circumferentially on the order of 60* from either side of the vertical centerline of the pipe.
Claim 6
Dependent Claim
29 words
The gas burner as recited in claim 15 wherein the width of each burner wing may be on the order of one half the diameter of the burner pipe.
Claim 7
Dependent Claim
152 words
A gas burner for heating an exhaust gas flow in a vitiated air environment comprising: an elongated cylindrical burner pipe adapted to be transversely mounted with respect to the exhaust gas flow; at least one pair of oppositely directed, coplanar, imperforate horizontal wing baffles attached to said burner pipe and extending radially of the burner pipe, adapted to be perpendicular to said exhaust gas flow for directing a portion of said exhaust gas flow into a recirculation pattern downstream from said burner pipe, said baffles each having a width extending from the burner on the order of one half the diameter of the burner; and, at least two rows of fuel ports above said baffles and along the length of said burner pipe, said rows of fuel ports symmetrical with respect to the vertical centerline of said burner pipe and having an included angle in the order of 60* between said rows.
Claim 8
Dependent Claim
152 words
A gas burner for heating an exhaust gas flow in a vitiated air environment comprising: an elongated cylindrical burner pipe adapted to be transversely mounted with respect to the exhaust gas flow; at least one pair of oppositely directed, coplanar, imperforate horizontal wing baffles attached to said burner pipe and extending radially of the burner pipe, adapted to be perpendicular to said exhaust gas flow for directing a portion of said exhaust gas flow into a recirculation pattern downstream from said burner pipe, said baffles each having a width extending from the burner on the order of one half the diameter of the burner; and, at least two rows of fuel ports above said baffles and along the length of said burner pipe, said rows of fuel ports symmetrical with respect to the vertical centerline of said burner pipe and having an included angle in the order of 60* between said rows.
References Cited (Backward Citations)
US2193176A
Cited
US2621720A
Cited
US2840152A
Cited
US3051464A
Cited
GB1010504A
Cited
US3494712A
Cited
US3574507A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1977-08-19 | 1978-02-18 | 1978-08-20 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-08-19 | 1982-02-18 | 1982-08-20 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-08-19 | 1986-02-18 | 1986-08-20 | $7700.00 | Window Closed / Lapsed |