US3799732A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner for liquid fuels
Assignee: WEISHAUPT M GmbH
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Filing: 1972-09-11
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Granted: 1974-03-26
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Expires: 1992-09-11
Abstract
Abstract Disclosed is a liquid fuel burner of the type having a pressure atomizer nozzle arranged concentrically within an air supply tube, the latter being provided on its end with an inwardly tapering truncated terminal cone, and a fuel-air mixture distributing member axially adjustably arranged at an interval in front of the burner nozzle, this member having a convex outer surface provided with openings opposite the nozzle. In order to improve the starting capability of such a burner and to enable its operation at self-cleaning temperatures, a ring member is arranged a small distance in front of the nozzle, between it and the mixture distributing member, this ring member having an inside diameter smaller than and an outside diameter larger than the diameter of the terminal cone orifice.
Inventors
- 👤 W Brodlin
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-24 10:44
CPC Classifications
F; F23; F23D; F23D11/00; F23D11/36; F23D11/40
Claims Analysis
Total Claims: 6
Claim 1
Independent Claim
194 words
A burner for liquid fuels comprising (1) a pressure atomizer nozzle arranged concentrically within an air supply tube, said air supply tube being provided with an inwardly tapering truncated terminal cone, and (2) a mixture distributing means axially adjustably arranged at an interval in front of the said burner nozzle, said distributing means having a convex outer surface provided with openings opposite said nozzle, the outlet cross-section of the said terminal cone (a) lying in the plane of the atomizer nozzle, (b) being smaller than the diameter of the peripheral contour of the mixture distributing means and/or the cross-section of the surface of said means determined through its peripheral contour and (c) being dimensioned so that the outflowing air forms a mixture with the fuel at a stream velocity which lies above the flame propagation velocity, wherein the improvement comprises a ring member arranged a small distance in front of the orifice of the said terminal cone between the cone and the mixture distributing means, the inside diameter of said ring member being smaller than and its outside diameter being larger than the diameter of the terminal cone in the region of its orifice.
Claim 2
Dependent Claim
194 words
A burner for liquid fuels comprising (1) a pressure atomizer nozzle arranged concentrically within an air supply tube, said air supply tube being provided with an inwardly tapering truncated terminal cone, and (2) a mixture distributing means axially adjustably arranged at an interval in front of the said burner nozzle, said distributing means having a convex outer surface provided with openings opposite said nozzle, the outlet cross-section of the said terminal cone (a) lying in the plane of the atomizer nozzle, (b) being smaller than the diameter of the peripheral contour of the mixture distributing means and/or the cross-section of the surface of said means determined through its peripheral contour and (c) being dimensioned so that the outflowing air forms a mixture with the fuel at a stream velocity which lies above the flame propagation velocity, wherein the improvement comprises a ring member arranged a small distance in front of the orifice of the said terminal cone between the cone and the mixture distributing means, the inside diameter of said ring member being smaller than and its outside diameter being larger than the diameter of the terminal cone in the region of its orifice.
Claim 3
Dependent Claim
28 words
A burner according to claim 1, wherein the ring member is formed as an open hollow body, the open side of which faces away from the terminal cone.
Claim 4
Dependent Claim
14 words
A burner according to claim 2, wherein the hollow body has a semi-circular cross-section.
Claim 5
Dependent Claim
44 words
A burner according to claim 1, wherein the inside diameter of the ring member is approximately 4 to 6 mm smaller than the orifice diameter of the terminal cone and its outside diameter is approximately 25 to 35 mm larger than its inside diameter.
Claim 6
Dependent Claim
22 words
A burner according to claim 1, wherein means are provided for axially adjusting the ring member with respect to the terminal cone.
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) | 1977-03-25 | 1977-09-24 | 1978-03-26 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-03-25 | 1981-09-24 | 1982-03-26 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-03-25 | 1985-09-24 | 1986-03-26 | $7700.00 | Window Closed / Lapsed |