US3825403A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Burner plate for infrared radiator
Assignee: Schwank GmbH
•
Filing: 1972-12-20
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Granted: 1974-07-23
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Expires: 1992-12-20
Abstract
Abstract A burner plate which comprises depressions on the radiating side and combustion passages arranged parallel to each other for conveying the fuel-air mixture from the mixture side to the radiating side of the plate, in which at least one of the combustion passages is coaxially arranged at the bottom of the respective pertaining depression whereas the other combustion passages are distributed over the sides of the depressions and the plate surface between the sides of the depressions, the combustion passages being distributed over the depressions and the radiating surface in such a way that the flames being generated will so uniformly act upon the lateral surface of the depressions and the radiating surface of the plate therebetween that the temperature being generated in the depressions will substantially equal the temperature generated at the radiating surface between the lateral surfaces of the depressions.
Inventors
- 👤 H Gottschall
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-10-29 16:46
CPC Classifications
F; F23; F23D; F23D14/00; F23D14/12; F23D14/14; F23D14/145
Claims Analysis
Total Claims: 17
Claim 1
Independent Claim
190 words
A burner plate for infrared radiators, which has a mixture side and an opposite radiating side and parallel passages passing therethrough from the mixture side to the radiating side to convey a fuel-air mixture for combustion on the radiating side of said plate, said radiating side of said plate being substantially flat with cylindrical depressions formed therein, each surrounded by said flat surface and having a peripheral side extending below said surface with the bottom of the depression converging to a central point of greatest depth, each depression having a passage ending in its central point of greatest depth and a plurality of other passages surrounding said central passage and intersecting its side to form semi-cylinders in the depressions, and further a plurality of said passages extending through said flat surface between said depressions, said combustion passages being distributed over said depressions and said flat surface so the flames being generated will uniformly act upon the lateral surfaces of said depressions and the flat surface therebetween that the temperature being generated in said depressions substantially equals the temperature generated at said plate surfaces between said lateral surfaces of said depressions.
Claim 2
Dependent Claim
190 words
A burner plate for infrared radiators, which has a mixture side and an opposite radiating side and parallel passages passing therethrough from the mixture side to the radiating side to convey a fuel-air mixture for combustion on the radiating side of said plate, said radiating side of said plate being substantially flat with cylindrical depressions formed therein, each surrounded by said flat surface and having a peripheral side extending below said surface with the bottom of the depression converging to a central point of greatest depth, each depression having a passage ending in its central point of greatest depth and a plurality of other passages surrounding said central passage and intersecting its side to form semi-cylinders in the depressions, and further a plurality of said passages extending through said flat surface between said depressions, said combustion passages being distributed over said depressions and said flat surface so the flames being generated will uniformly act upon the lateral surfaces of said depressions and the flat surface therebetween that the temperature being generated in said depressions substantially equals the temperature generated at said plate surfaces between said lateral surfaces of said depressions.
Claim 3
Dependent Claim
54 words
A burner plate according to claim 1, in which adjacent depressions are separated by a flat surface of less width than the diameter of a depression, the bottoms and sides with semi-cylinders formed by said depressions with intersecting passages forming layer radiating surfaces at different levels than the radiating surface of the flat surface.
Claim 4
Dependent Claim
29 words
A burner plate in combination according to claim 1, in which said bottom of said cylindrical recess forms a cone tapering in the direction away from said radiating side.
Claim 5
Dependent Claim
91 words
A burner plate in combination according to claim 1, in which said other combustion passages are divided into groups respectively associated with said depressions, the arrangement being such that each of said groups having the axes of its combustion passages located along an imaginary cylinder wall coaxial with the pertaining depression while the mouth of each of said other combustion passages is located in different planes, one of said planes being within the region of the bottom of the respective recess, and the other plane substantially coinciding with said radiating side.
Claim 6
Dependent Claim
19 words
A burner plate in combination according to claim 3, in which said cone cross sectionally defines an obtuse angle.
Claim 7
Dependent Claim
24 words
A burner plate in combination according to claim 4, in which each of said groups of combustion passages comprises six equally spaced combustion passages.
Claim 8
Dependent Claim
83 words
A burner plate in combination according to claim 6, in which the depressions are arranged in a plurality of roWs so that the axes of two adjacent depressions of each row define with that respective depression which is adjacent to both of said two depressions and is located in the adjacent row a triangle, and in which in the center of each of the thus defined triangles there is provided an additional combustion passage having the same diameter as said other combustion passages.
Claim 9
Dependent Claim
17 words
A burner plate in combination according to claim 1, in which each depression has a semispherical bottom.
Claim 10
Dependent Claim
21 words
A burner plate in combination according to claim 8, in which each depression is composed of two cylinders of different diameters.
Claim 11
Dependent Claim
29 words
A burner plate in combination according to claim 6, in which that end of said depression which is remote from said radiating side is provided with a conical portion.
Claim 12
Dependent Claim
67 words
A burner plate in combination according to claim 3, in which the tapering portion of said cone cross-sectionwise defines an angle of from 90* to 180* while the depth of the depressions is within the range of from 2 - 5 mm and the diameter of the combustion passages amounts to from 0.5 to 1.5 mm, the number of combustion passages amounting to from four to eight.
Claim 13
Dependent Claim
32 words
A burner plate in combination according to claim 1, in which the ratio of its diameter at the radiating side to the depth of the depressions amounts to approximately 4 : 3.
Claim 14
Dependent Claim
28 words
A burner plate in combination according to claim 1, in which the diameter of the depressions adjacent said radiating side amounts to approximately from 3 to 5 mm.
Claim 15
Dependent Claim
35 words
A burner plate in combination according to claim 1, in which the depressions are arranged in a plurality of rows with the depressions of one row offset relative to the depressions of the adjacent row.
Claim 16
Dependent Claim
33 words
A burner plate in combination according to claim 14, in which the axes of the combustion passages in one and the same row of depressions are located along one and the same line.
Claim 17
Dependent Claim
66 words
A burner plate in combination according to claim 1, in which the depressions define therebetween webs, and in which an additional combustion passage parallel to the other combustion passages is located within the respective web, said additional combustion passage passing through the center of a triangle defined by two depressions located adjacent each other in one row and a depression located in the next adjacent row.
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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) | 1977-07-22 | 1978-01-21 | 1978-07-23 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1981-07-22 | 1982-01-21 | 1982-07-23 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1985-07-22 | 1986-01-21 | 1986-07-23 | $7700.00 | Window Closed / Lapsed |