Patent US4652236A successfully refreshed from Google Patents.
US4652236A
Expired / Lapsed
US
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Atmospheric gas burner assembly
Assignee: Individual
•
Filing: 1986-03-10
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Granted: 1987-03-24
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Expires: 2006-03-10
Abstract
Abstract An atmospheric gas burner assembly comprises a burner tube defining a multiplicity of gas outlet ports and an element reducing the flame temperature and, hence, the emission of oxides of nitrogen disposed above the burner tube in the flame area. To optimize the reduction of NO x emission without affecting permitted CO values and to render the values of reduction in NO x emissions largely independent of the geometry of the surrounding combustion chamber so as to obtain reproducible emission reduction values, the reducing element is constituted by a multiplicity of fins confining the flames in shafts extending therebetween, the fins extending perpendicularly above the tube and being distributed along the tube.
Inventors
- 👤 Hans Viessmann
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-06 16:54
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/02; F23D14/04; F23D14/10; F23D14/46; F23D14/70; F23C; F23C2203/00; F23C2203/20
Claims Analysis
Total Claims: 15
Claim 1
Independent Claim
105 words
An atmospheric gas burner assembly comprising a burner tube defining a multiplicity of gas outlet ports grouped in arrays extending along the length of the tube and producing flames in a flame area above the tube and an element reducing the flame temperature and, hence, emission of oxides of nitrogen disposed above the burner tube in the flame area, where the reducing element is constituted by a multiplicy of fins extending above the tube and being distributed along the tube, adjacent ones of the fins located at each side of the arrays of gas outlet ports to define flame shafts extending between the adjacent fins.
Claim 2
Dependent Claim
105 words
An atmospheric gas burner assembly comprising a burner tube defining a multiplicity of gas outlet ports grouped in arrays extending along the length of the tube and producing flames in a flame area above the tube and an element reducing the flame temperature and, hence, emission of oxides of nitrogen disposed above the burner tube in the flame area, where the reducing element is constituted by a multiplicy of fins extending above the tube and being distributed along the tube, adjacent ones of the fins located at each side of the arrays of gas outlet ports to define flame shafts extending between the adjacent fins.
Claim 3
Dependent Claim
22 words
The atmospheric gas burner assembly of claim 1, wherein the fins have bottom edges spaced from the surface of the burner tube.
Claim 4
Dependent Claim
29 words
The atmospheric gas burner assembly of claim 1, wherein the fins have bottom edges shaped to conform to the surface configuration of the burner tube transversely to the tube.
Claim 5
Dependent Claim
40 words
The atmospheric gas burner assembly of claim 1, wherein side walls extend between selected pairs of the adjacent fins to form a shaft box with the adjacent fins confining at least one of the arrays of the gas outlet ports.
Claim 6
Dependent Claim
40 words
The atmospheric gas burner assembly of claim 1, wherein selected pairs of adjacent ones of the fins are arranged to form pocket-shaped bodies open on the sides and on top, and further comprising a common carrier for the pocket-shaped bodies.
Claim 7
Dependent Claim
34 words
The atmospheric gas burner assembly of claim 5, wherein a plurality of said pocket-shaped bodies extend in the longitudinal direction of the tube and have bottoms spaced equidistantly from the surface of the tube.
Claim 8
Dependent Claim
19 words
The atmospheric gas burner assembly of claim 6, wherein the bottoms of the pocket-shaped bodies define air inlet ports.
Claim 9
Dependent Claim
19 words
The atmospheric gas burner assembly of claim 6, wherein the spacing between the pocket-shaped bodies corresponds to their width.
Claim 10
Dependent Claim
34 words
The atmospheric gas burner assembly of claim 5, wherein the gas outlet ports are grouped in arrays and the pocket-shaped bodies are disposed above the tube in areas free of the gas outlet ports.
Claim 11
Dependent Claim
30 words
The atmospheric gas burner assembly of claim 5, wherein the pocket-shaped body has a bottom shaped to conform to the surface configuration of the burner tube transversely to the tube.
Claim 12
Dependent Claim
22 words
The atmospheric gas burner assembly of claim 1, wherein the fins have a height not exceeding half the diameter of the tube.
Claim 13
Dependent Claim
21 words
The atmospheric gas burner assembly of claim 1, further comprising means for vertically adjustably mounting the fins on the burner tube.
Claim 14
Dependent Claim
25 words
The atmospheric gas burner assembly of claim 5, further comprising means for vertically adjustably mounting the carrier with the pocket-shaped bodies on the burner tube.
Claim 15
Dependent Claim
48 words
The atmospheric gas burner assembly of claim 1, wherein side walls extend between two pairs of the adjacent fins to form two shaft boxes with the adjacent fins of the respective pairs, the shaft boxes confining at least one of the arrays of the gas outlet ports therebetween.
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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) | 1990-03-23 | 1990-09-22 | 1991-03-24 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1994-03-23 | 1994-09-22 | 1995-03-24 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1998-03-23 | 1998-09-22 | 1999-03-24 | $7700.00 | Window Closed / Lapsed |