US3846066A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Fuel burner apparatus
Assignee: Black Sivalls and Bryson Inc
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Filing: 1973-05-24
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Granted: 1974-11-05
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Expires: 1993-05-24
Abstract
Abstract The present invention relates to an improved fuel burner apparatus which includes a hollow outer shell having a hollow inner liner supported therein so that an air passageway is formed between the inner liner and the outer shell and the interior of the inner liner forms a fuel-air combustion chamber. One or more openings are disposed in the inner liner so that a portion of combustion air flowing through the air passageway is admitted as secondary air directly into the interior of the inner liner.
Inventors
- 👤 H Ebeling
- 👤 R Smith
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-27 12:41
CPC Classifications
F; F23; F23C; F23C3/00
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
205 words
In a fuel burner apparatus having a closed outer shell; a hollow inner liner supported within the outer shell so that an air passageway is formed between the inner liner and the outer shell, the interior of the inner liner forming a fuel-air combustion chamber and the open rearward end thereof forming a fuel-air mixing and ignition area within the rearward end of the outer shell; a combustion air inlet formed in the outer shell for admitting combustion air to said passageway and to said air-fuel mixing and ignition area; and a fuel inlet attached to the outer shell for admitting fuel to the fuel-air mixing area therewithin, the improvement which comprises: said fuel inlet including a conduit positioned coaxially with said inner liner extending through the rearward end of said outer shell and terminating open-ended at a position between the rearward end of said inner liner and the rearward end of said outer shell; and said inner liner including one or more openings positioned intermediate to the ends thereof so that a portion of combustion air flowing through said air passageway is caused by bypass said air-fuel mixing and ignition area and flow through said openings directly into the interior of said inner liner.
Claim 2
Dependent Claim
205 words
In a fuel burner apparatus having a closed outer shell; a hollow inner liner supported within the outer shell so that an air passageway is formed between the inner liner and the outer shell, the interior of the inner liner forming a fuel-air combustion chamber and the open rearward end thereof forming a fuel-air mixing and ignition area within the rearward end of the outer shell; a combustion air inlet formed in the outer shell for admitting combustion air to said passageway and to said air-fuel mixing and ignition area; and a fuel inlet attached to the outer shell for admitting fuel to the fuel-air mixing area therewithin, the improvement which comprises: said fuel inlet including a conduit positioned coaxially with said inner liner extending through the rearward end of said outer shell and terminating open-ended at a position between the rearward end of said inner liner and the rearward end of said outer shell; and said inner liner including one or more openings positioned intermediate to the ends thereof so that a portion of combustion air flowing through said air passageway is caused by bypass said air-fuel mixing and ignition area and flow through said openings directly into the interior of said inner liner.
Claim 3
Dependent Claim
67 words
The burner apparatus of claim 1 wherein: said inner liner is positioned coaxially with said outer shell and includes a frusto-conical section converging toward the rearward end thereof and a frusto-conical section converging toward the forward end thereof; and said combustion air inlet forming a volute shape with the outer shell whereby the combustion air is caused to flow in a helical path within said air passageway.
Claim 4
Dependent Claim
207 words
An improved fuel burner apparatus which comprises: a hollow outer shell having a forward end and a rearward end; a front wall secured to the forward end of the outer shell thereby closing the forward end; a rear wall secured to the rearward end of the outer shell thereby closing the rearward end; a hollow inner liner having a forward end and a rearward end supported within the outer shell so that an air passageway is formed between the outer shell and the inner liner, the forward end of the inner liner extending through the front wall and the rearward end of the inner liner being spaced a predetermined distance from the rear wall, the inner liner including one or more openings therein positioned intermediate to the Ends thereof so that a portion of combustion air flowing through said air passageway is caused to flow through said openings into the interior of the inner liner; an air inlet formed in the outer shell adjacent the forward end thereof for admitting combustion air into said air passageway; and a fuel inlet attached through said rear wall for injecting fuel into the outer shell at a position between the rear wall and the rearward end of the inner liner.
Claim 5
Dependent Claim
207 words
An improved fuel burner apparatus which comprises: a hollow outer shell having a forward end and a rearward end; a front wall secured to the forward end of the outer shell thereby closing the forward end; a rear wall secured to the rearward end of the outer shell thereby closing the rearward end; a hollow inner liner having a forward end and a rearward end supported within the outer shell so that an air passageway is formed between the outer shell and the inner liner, the forward end of the inner liner extending through the front wall and the rearward end of the inner liner being spaced a predetermined distance from the rear wall, the inner liner including one or more openings therein positioned intermediate to the Ends thereof so that a portion of combustion air flowing through said air passageway is caused to flow through said openings into the interior of the inner liner; an air inlet formed in the outer shell adjacent the forward end thereof for admitting combustion air into said air passageway; and a fuel inlet attached through said rear wall for injecting fuel into the outer shell at a position between the rear wall and the rearward end of the inner liner.
Claim 6
Dependent Claim
30 words
The burner apparatus of claim 3 wherein the inner liner includes a frusto-conical section converging toward the rearward end thereof and a frusto-conical section converging toward the forward end thereof.
Claim 7
Dependent Claim
23 words
The burner apparatus of claim 4 wherein said one or more openings in said inner liner are defined further as being elongated slots.
Claim 8
Dependent Claim
25 words
The burner apparatus of claim 4 wherein said one or more openings in said inner liner are defined further as being substantially circular shaped orifices.
Claim 9
Dependent Claim
27 words
The apparatus of claim 4 wherein the outer shell is positioned coaxially with said inner liner and includes a frusto-conical section converging toward the rearward end thereof.
Claim 10
Dependent Claim
39 words
The burner apparatus of claim 7 wherein the air inlet formed in the outer shell forms a volute shape with the outer shell so that combustion air is caused to flow in a helical path within said air passageway.
Claim 11
Dependent Claim
47 words
The apparatus of claim 8 wherein the fuel gas inlet attached through said rear wall is a conduit positioned coaxially with the inner liner extending through the rear wall and terminating open-ended at a position between the rearward end of the inner liner and the rear wall.
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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) | 1977-11-04 | 1978-05-06 | 1978-11-05 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-11-04 | 1982-05-06 | 1982-11-05 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-11-04 | 1986-05-06 | 1986-11-05 | $7700.00 | Window Closed / Lapsed |