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US4380202A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Mixer for dual register burner
Assignee: Babcock and Wilcox Co
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Filing: 1981-01-14
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Granted: 1983-04-19
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Expires: 2001-01-14
Abstract
Abstract An improved pulverized fuel burning method and apparatus having means for decreasing the pressure drop through the burner nozzle and decreasing the formation of nitric oxides, including a splash plate to breakup a natural forming fuel-rope, a deflector to deflect the fuel-rope, and a diffuser to disperse the pulverized fuel into a more desirable fuel burning distribution pattern.
Inventors
- 👤 Albert D. LaRue
- 👤 John J. Wolf
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-28 16:39
CPC Classifications
F; F23; F23D; F23D1/00
Claims Analysis
Total Claims: 9
Claim 1
Independent Claim
65 words
An improved fuel burner having a tubular nozzle with an end plate attached thereto and a means for reducing the pressure loss though the nozzle and inhibiting the formation of nitric oxides, the means comprising; a deflector located downstream fuel flow-wise of the end plate and; a diffuser disposed within said nozzle having a shroud and a plug located downstream fuel flow-wise of the deflector.
Claim 2
Dependent Claim
65 words
An improved fuel burner having a tubular nozzle with an end plate attached thereto and a means for reducing the pressure loss though the nozzle and inhibiting the formation of nitric oxides, the means comprising; a deflector located downstream fuel flow-wise of the end plate and; a diffuser disposed within said nozzle having a shroud and a plug located downstream fuel flow-wise of the deflector.
Claim 3
Dependent Claim
15 words
The improved fuel burner according to claim 1 wherein said deflector is a semicircular plate.
Claim 4
Dependent Claim
20 words
The improved fuel burner according to claim 1 wherein said deflector is angled downward in the direction of said diffuser.
Claim 5
Dependent Claim
21 words
The improved fuel burner according to claim 1 wherein the plug is formed of two frusto-conical sections joined at their base.
Claim 6
Dependent Claim
14 words
The improved fuel burner according to claim 1 wherein the shroud is cyclindrically shaped.
Claim 7
Dependent Claim
66 words
An improved air entrained fuel burner having a tubular nozzle flow connected to an elbow member and a means for reducing the pressure loss through the nozzle, the means comprising; a deflector located downstream fuel-wise of the elbow member, and a diffuser having a cyclindrically shaped shroud mounted concentrically within the nozzle downstream fuel flow-wise of the deflector and a plug mounted concentrically within the shroud.
Claim 8
Dependent Claim
66 words
An improved air entrained fuel burner having a tubular nozzle flow connected to an elbow member and a means for reducing the pressure loss through the nozzle, the means comprising; a deflector located downstream fuel-wise of the elbow member, and a diffuser having a cyclindrically shaped shroud mounted concentrically within the nozzle downstream fuel flow-wise of the deflector and a plug mounted concentrically within the shroud.
Claim 9
Dependent Claim
22 words
The fuel burner according to claim 6 wherein the deflector is shaped to directionally guide the air entrained fuel into the shroud.
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) | 1986-04-18 | 1986-10-18 | 1987-04-19 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1990-04-18 | 1990-10-18 | 1991-04-19 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1994-04-18 | 1994-10-18 | 1995-04-19 | $7700.00 | Window Closed / Lapsed |