US3677532A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Two chamber fuel burner
Assignee: Individual
•
Filing: 1970-07-06
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Granted: 1972-07-18
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Expires: 1990-07-06
Abstract
Abstract This two-chamber burner delivers completed combustion. Two flanged housings are joined together, one for each chamber, and both chambers have long narrow rectangular tangential air inlets into their cylindrical housing. The first chamber has a fuel inlet for gas or oil and a first cylindrical baffle spaced axially from the end wall and radially from the housing to provide an annular air inlet chamber. Air scoops connect air from the space between the housing and baffle into the interior space inside the baffle. When using oil as the fuel, a second baffle is spaced near the end of this first baffle, with an overlap, and is of greater diameter. It terminates near a first conical shell that leads into a second chamber, where it is surrounded by a further cylindrical baffle, also spaced from the housing to provide an annular chamber, into which the air inlet for that chamber opens. This further baffle terminates near a second frustoconical shell that leads into a boiler or other such device.
Inventors
- 👤 John J Wolfersperger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-25 03:54
CPC Classifications
F; F23; F23C; F23C6/00; F23C6/04
Claims Analysis
Total Claims: 8
Claim 1
Independent Claim
297 words
A method for burning fuel and air comprising igniting said fuel in air, and continuing to completion the combustion of the fuel and air in an axial core, while surrounding the flame and all the heat of the developed and developing combustion, from the locus of ignition to a locus of discharge of completed combustion, with relatively thin sheets of high velocity, spirally flowing air fed in a series of preplanned splits most of which is utilized as combustion air, said step of flowing air in pre-planned splits including flowing air in an initial set of splits preceding the locus of ignition and conducting air radially inwardly toward the center and releasing it at about said center for flow in the direction toward the locus of discharge, flowing air in a second split preceding the locus of ignition in a cylindrical stratum surrounding that from the initial series of splits, flowing air in a third split axially beyond said locus of ignition in a cylindrical stratum surrounding that from the initial and second splits and at a greater distance from said center, flowing air in a fourth split about half way from said locus of ignition to said locus of discharge, coming in conically from beyond the last-mentioned said stratum and extending inwardly therebeyond toward the center to a restricted throat of smaller cross section than that of the combined first and second splits, Combining with the air brought in by said first three splits into a constricted cylindrical volume, flowing air in a fifth split immediately thereafter, and flowing air in a sixth split adjacent the locus, combining with all previous splits while causing all the air to flow together into a final frustoconical shape terminating at said locus of discharge in a second restricted throat.
Claim 2
Independent Claim
297 words
A method for burning fuel and air comprising igniting said fuel in air, and continuing to completion the combustion of the fuel and air in an axial core, while surrounding the flame and all the heat of the developed and developing combustion, from the locus of ignition to a locus of discharge of completed combustion, with relatively thin sheets of high velocity, spirally flowing air fed in a series of preplanned splits most of which is utilized as combustion air, said step of flowing air in pre-planned splits including flowing air in an initial set of splits preceding the locus of ignition and conducting air radially inwardly toward the center and releasing it at about said center for flow in the direction toward the locus of discharge, flowing air in a second split preceding the locus of ignition in a cylindrical stratum surrounding that from the initial series of splits, flowing air in a third split axially beyond said locus of ignition in a cylindrical stratum surrounding that from the initial and second splits and at a greater distance from said center, flowing air in a fourth split about half way from said locus of ignition to said locus of discharge, coming in conically from beyond the last-mentioned said stratum and extending inwardly therebeyond toward the center to a restricted throat of smaller cross section than that of the combined first and second splits, Combining with the air brought in by said first three splits into a constricted cylindrical volume, flowing air in a fifth split immediately thereafter, and flowing air in a sixth split adjacent the locus, combining with all previous splits while causing all the air to flow together into a final frustoconical shape terminating at said locus of discharge in a second restricted throat.
Claim 3
Dependent Claim
86 words
The method of claim 1 characterized by bringing in air in two main streams, a first for the first four said splits, and a second for the fifth and sixth splits, said streams each extending for substantially half the full length of said distance between said locus of ignition and said locus of discharge, and thus for substantially the full length of burning, said air all being brought in tangentially to a cylindrical area enclosing said combustion and being distributed in planned amounts to the splits.
Claim 4
Dependent Claim
31 words
The method of claim 2 comprising feeding both saId air streams from a single fan without dampening flow in either air stream, so that the air is delivered at maximum velocity.
Claim 5
Dependent Claim
256 words
In a method of burning oil and air whereby the burner delivers completed combustion and comprising the steps of spraying oil axially of an annular zone, introducing a first supply of combustion air from one axial end of said zone at about the axial centerline thereof, introducing a second supply of combustion air in a general helical path from said one end farther from the axial center and closer to the inner periphery of the annular zone, introducing a third supply of combustion air at the other end of said annular zone in a generally helical path of larger diameter than said annular zone and in the same axial direction as first and second supplies, and introducing a fourth supply of combustion air beyond the introduction of said third supply and in the same axial direction along a first frustoconical path from a larger diameter than said third supply to a smaller diameter than said second supply, the improvement comprising: introducing a fifth supply of combustion air past said first frustoconical path in a generally helical path of about the same diameter as that of said second supply and the same axial direction of said first, second, third, and fourth supplies, and introducing a sixth supply of combustion air beyond the introduction of said fifth supply and in the same axial direction along a second frustoconical path and from a diameter about the same as that of said third supply to a diameter about the same as that of the end of said first frustoconical path.
Claim 6
Dependent Claim
256 words
In a method of burning oil and air whereby the burner delivers completed combustion and comprising the steps of spraying oil axially of an annular zone, introducing a first supply of combustion air from one axial end of said zone at about the axial centerline thereof, introducing a second supply of combustion air in a general helical path from said one end farther from the axial center and closer to the inner periphery of the annular zone, introducing a third supply of combustion air at the other end of said annular zone in a generally helical path of larger diameter than said annular zone and in the same axial direction as first and second supplies, and introducing a fourth supply of combustion air beyond the introduction of said third supply and in the same axial direction along a first frustoconical path from a larger diameter than said third supply to a smaller diameter than said second supply, the improvement comprising: introducing a fifth supply of combustion air past said first frustoconical path in a generally helical path of about the same diameter as that of said second supply and the same axial direction of said first, second, third, and fourth supplies, and introducing a sixth supply of combustion air beyond the introduction of said fifth supply and in the same axial direction along a second frustoconical path and from a diameter about the same as that of said third supply to a diameter about the same as that of the end of said first frustoconical path.
Claim 7
Dependent Claim
263 words
In a method of burning gas fuel and air whereby the burner delivers completed combustion and comprising the steps of introducing gas radially inwardly from an annular zone along a substantial length and along narrow axially extending radial jets, introducing a first supply of combustion air from one axial end of said zone at about the axial centerline thereof, introducing a second supply of combustion air in a generally helical path from said one end closer to the inner periphery of the annular zone, introducing a third supply of combustion air at the other end of said annular zone in a generally helical path of larger diameter than said annular zone and in the same axially direction as said first and second supplies, and introducing a fourth supply of combustion air beyond the introduction of said third supply and in the same axially direction along a frustoconical path from a larger diameter than said third supply to a smaller diameter than said second supply, the improvement comprising: introducing a fifth supply of combustion air past said first frustoconical path in a generally helical path of about the same diameter as that of said third supply and the same axial direction of said first, second, third, and fourth supplies, and introducing a sixth supply of combustion air beyond the introduction of said fifth supply and in the same axial direction along a second frustoconical path and from a diameter about the same as that of said third supply to a diameter about the same as that of the end of said first frustoconical path.
Claim 8
Dependent Claim
263 words
In a method of burning gas fuel and air whereby the burner delivers completed combustion and comprising the steps of introducing gas radially inwardly from an annular zone along a substantial length and along narrow axially extending radial jets, introducing a first supply of combustion air from one axial end of said zone at about the axial centerline thereof, introducing a second supply of combustion air in a generally helical path from said one end closer to the inner periphery of the annular zone, introducing a third supply of combustion air at the other end of said annular zone in a generally helical path of larger diameter than said annular zone and in the same axially direction as said first and second supplies, and introducing a fourth supply of combustion air beyond the introduction of said third supply and in the same axially direction along a frustoconical path from a larger diameter than said third supply to a smaller diameter than said second supply, the improvement comprising: introducing a fifth supply of combustion air past said first frustoconical path in a generally helical path of about the same diameter as that of said third supply and the same axial direction of said first, second, third, and fourth supplies, and introducing a sixth supply of combustion air beyond the introduction of said fifth supply and in the same axial direction along a second frustoconical path and from a diameter about the same as that of said third supply to a diameter about the same as that of the end of said first frustoconical path.
References Cited (Backward Citations)
US2499207A
Cited
US2518364A
Cited
US2516063A
Cited
US2787318A
Cited
US3276693A
Cited
US3352106A
Cited
US3339613A
Cited
USPTO Annuity & Maintenance Windows
| Annuity Stage | Window Opens | Payment Deadline | Surcharge Period Until | Estimated Fee | Status |
|---|---|---|---|---|---|
| 3.5 Years (Year 4) | 1975-07-18 | 1976-01-17 | 1976-07-18 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1979-07-18 | 1980-01-17 | 1980-07-18 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1983-07-18 | 1984-01-17 | 1984-07-18 | $7700.00 | Window Closed / Lapsed |