US4112912A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Gas broiler
Assignee: Individual
•
Filing: 1977-08-22
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Granted: 1978-09-12
•
Expires: 1997-08-22
Abstract
Abstract An oven broiler is provided with an elongated stoichiometric burner having two rows of apertures from which emerge free turbulent gas jets entraining the stoichiometric quantity of combustion air before merging on account of the spacing between the apertures being proportional to the aperture diameter, the ratio of the Rankin temperature of gas and air; a curvilinear radiator shield is heated by the combustion products and directs radiation away from the burner, and a second shield is heated by the combustion products flowing off the first shield.
Inventors
- 👤 Earle W. Ballentine
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-03 12:30
CPC Classifications
A; A47; A47J; A47J37/00; A47J37/06; F; F23; F23D; F23D14/00; F23D14/20; F24; F24C; F24C3/00; F24C3/08; F24C3/085; F24C3/087
Claims Analysis
Total Claims: 16
Claim 1
Independent Claim
205 words
An oven-broiler for gas ranges comprising: burner means for producing a combustible stoichiometric air-gas mixture, the burner means having chamber means with a planar top surface and an inlet for connection to a source of gaseous fuel, air for combustion flowing across the top surfaces; aperture means positioned in the planar top surface of the chamber means for discharging free turbulent jets entraining a quantity of combustion air required for stoichiometric combustion of the gaseous fuel, said aperture means being arranged in a specific geometric array wherein the lineal distances between the apertures are identical and are approximately equal to the product of, (a) the stoichiometric air-gas ratio, (b) the aperture diameter, (c) a constant of proportionality which has a value of 2.42 and (d) the ratio of the Rankine temperatures of the gaseous fuel and the combustion air, said turbulent jets coalescing in the stoichiometric demarcation plane which is parallel to the planar top surface of the chamber means; a first radiator means centered over the burner means and heated by the combustion products produced by the burner means; a second radiator means heated by the cooled combustion products; and broiler pan means positioned below the burner means for supporting food to be broiled.
Claim 2
Dependent Claim
205 words
An oven-broiler for gas ranges comprising: burner means for producing a combustible stoichiometric air-gas mixture, the burner means having chamber means with a planar top surface and an inlet for connection to a source of gaseous fuel, air for combustion flowing across the top surfaces; aperture means positioned in the planar top surface of the chamber means for discharging free turbulent jets entraining a quantity of combustion air required for stoichiometric combustion of the gaseous fuel, said aperture means being arranged in a specific geometric array wherein the lineal distances between the apertures are identical and are approximately equal to the product of, (a) the stoichiometric air-gas ratio, (b) the aperture diameter, (c) a constant of proportionality which has a value of 2.42 and (d) the ratio of the Rankine temperatures of the gaseous fuel and the combustion air, said turbulent jets coalescing in the stoichiometric demarcation plane which is parallel to the planar top surface of the chamber means; a first radiator means centered over the burner means and heated by the combustion products produced by the burner means; a second radiator means heated by the cooled combustion products; and broiler pan means positioned below the burner means for supporting food to be broiled.
Claim 3
Dependent Claim
38 words
An oven-broiler in accordance with claim 1 wherein the first radiator means is a curvilinear surface with a protuberant hose which prevents the radiation emitted from a protuberant nose from heating the top surface of the stoichiometric burner.
Claim 4
Dependent Claim
34 words
An oven-broiler in accordance with claim 1 and including an aluminum plate supported by the second radiator means and for reflecting radiation emitted by the second radiator means, back to the second radiator means.
Claim 5
Dependent Claim
34 words
An oven-broiler in accordance with claim 1 and including an aluminum plate supported by the second radiator means and for reflecting radiation emitted by the second radiator means, back to the second radiator means.
Claim 6
Dependent Claim
17 words
An oven-broiler in accordance with claim 1 whereby the first radiator means is made of stainless steel.
Claim 7
Dependent Claim
17 words
An oven-broiler in accordance with claim 1 whereby the second radiator means is made of mild steel.
Claim 8
Dependent Claim
136 words
In an oven-broiler for gas ranges the combination comprising a burner means including a chamber, having burner openings for discharging free turbulent jets and an inlet for connection to a source of gaseous fuel; said free turbulent jets entraining the amount of air required for stoichiometric combustion of the gaseous fuel, said jets coalescing in a stoichiometric demarcation plane; a first radiator means disposed above the said plane and heated by combustion products developed by combustion in a zone above the said demarcation plane; and a second radiator means disposed above the first radiator and laterally extending beyond the first radiator, the second radiator being heated by the combustion products flowing off laterally from the first radiator, the first and second radiators together providing a downwardly directed radiation field, directing radiation away from the burner means.
Claim 9
Dependent Claim
136 words
In an oven-broiler for gas ranges the combination comprising a burner means including a chamber, having burner openings for discharging free turbulent jets and an inlet for connection to a source of gaseous fuel; said free turbulent jets entraining the amount of air required for stoichiometric combustion of the gaseous fuel, said jets coalescing in a stoichiometric demarcation plane; a first radiator means disposed above the said plane and heated by combustion products developed by combustion in a zone above the said demarcation plane; and a second radiator means disposed above the first radiator and laterally extending beyond the first radiator, the second radiator being heated by the combustion products flowing off laterally from the first radiator, the first and second radiators together providing a downwardly directed radiation field, directing radiation away from the burner means.
Claim 10
Dependent Claim
54 words
The combination as set forth in claim 7, the first radiator means has a curvilinear surface with a protuberant nose, the first radiator being made of stainless steel, for preventing the heating of the top surface of the stoichiometric burner means by the emission of radiation from the curvilinear surface with its protuberant nose.
Claim 11
Dependent Claim
24 words
The combination as set forth in claim 7, said second radiator means being made of grit blasted steel having a sprayed on aluminum coating.
Claim 12
Dependent Claim
33 words
The combination as set forth in claim 7, said second radiator means supporting an aluminum plate in order to reflect radiation emitted by the second radiator means back to the second radiator means.
Claim 13
Dependent Claim
18 words
The combination as set forth in claim 7, wherein the first radiator means is made of stainless steel.
Claim 14
Dependent Claim
18 words
The combination as set forth in claim 7, wherein the second radiator means is made of mild steel.
Claim 15
Dependent Claim
81 words
The combination as set forth in claim 7, the burner means having apertures in a top surface for discharging free turbulent jets to apertures being arranged in a specific geometric array, the lineal distances between the apertures are similar and approximately equal to the product of the stoichiometric air-gas ratio, the diameter of the apertures, a factor of proportionality of 2.42 and the ratio of the Rankine temperatures of the gaseous fuel and of combustion air flowing across the top surface.
Claim 16
Dependent Claim
46 words
The combination as in claim 13, said first radiator as being disposed above the top surface of the chamber means, having a distance in excess of the product of said air gas ratio, the aperture diameter and a constant of proportionality which is at least 3.5.
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) | 1981-09-11 | 1982-03-13 | 1982-09-12 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1985-09-11 | 1986-03-13 | 1986-09-12 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 1989-09-11 | 1990-03-13 | 1990-09-12 | $7700.00 | Window Closed / Lapsed |