Patent US4861261A successfully refreshed from Google Patents.
US4861261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a gas-infrared radiator, and the gas-infrared radiator
Assignee: Individual
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Filing: 1987-10-05
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Granted: 1989-08-29
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Expires: 2007-10-05
Abstract
Abstract In order to adapt a gas-infrared radiator (a radiant burner) to operating conditions in a particularly efficient manner, the energy delivered is reduced by intermittently reducing a controlled supply of gas so that the energy delivery is below about 40% or even less of the maximum energy delivery of the infrared radiator, and a flame supplied separately from the controlled gas supply is maintained in the combustion chamber of the gas-infrared radiator, at least when operating in the aforementioned range. This is achieved more particularly by providing at least one nozzle (22) for a pilot light, directed towards the combustion chamber (4).
Inventors
- 👤 Kurt Krieger
Bibliographic Details
Application Number
—
Jurisdiction
US
Data Source
google_patents
Last Synchronized
2026-11-08 00:58
CPC Classifications
D; D21; D21F; D21F5/00; D21F5/001; D21F5/002; F; F23; F23D; F23D14/00; F23D14/26; F23D14/46; F23D14/60; F23D14/62; F23D14/64; F23N; F23N1/00; F23N1/005; F23N1/02; F23N1/025
Claims Analysis
Total Claims: 11
Claim 1
Independent Claim
144 words
A method of operating a gas infrared radiator with variable energy output and comprising means forming a combustion chamber surrounded substantially on all sides by components and a pre-chamber adjacent the combustion chamber, a barrier layer of fibrous material with a plurality of pipes extending therethrough separating the pre-chamber from the combustion chamber the amount of gas other than air supplied to the combustion chamber or said pre-chamber chamber being variable by a control device, characterized in that the amount of gas supplied is intermittently varied by a pulse control system down to a range corresponding to an energy delivery less than about 40% of the maximum rated energy obtainable from the infrared radiator, the air supply being continuously maintained, and a flame supplied with gas is maintained in the combustion chamber separately from the controlled gas supply when operating in the previously-mentioned range.
Claim 2
Independent Claim
144 words
A method of operating a gas infrared radiator with variable energy output and comprising means forming a combustion chamber surrounded substantially on all sides by components and a pre-chamber adjacent the combustion chamber, a barrier layer of fibrous material with a plurality of pipes extending therethrough separating the pre-chamber from the combustion chamber the amount of gas other than air supplied to the combustion chamber or said pre-chamber chamber being variable by a control device, characterized in that the amount of gas supplied is intermittently varied by a pulse control system down to a range corresponding to an energy delivery less than about 40% of the maximum rated energy obtainable from the infrared radiator, the air supply being continuously maintained, and a flame supplied with gas is maintained in the combustion chamber separately from the controlled gas supply when operating in the previously-mentioned range.
Claim 3
Dependent Claim
29 words
A method according to claim 1, characterized in that said gas other than air is intermittently reduced to a range less than about 20% of said maximum rated energy.
Claim 4
Dependent Claim
29 words
A method according to claim 2, characterised in that the controlled gas supply is intermittently reduced to a range corresponding to practically zero energy delivery by the infrared radiator.
Claim 5
Independent Claim
26 words
A method according to any of claims 1 to 3, characterised in that the flame separately supplied with gas is also separately supplied with combustion air.
Claim 6
Dependent Claim
97 words
A gas infrared radiator comprising a pre-chamber connected to gas and air supply pipes and a combustion chamber surrounded substantially on all sides by components, a plurality of individual pipes for supplying a gas air mixture and extending between the pre-chamber and the combustion chamber through a heat-resistant gas permeable barrier layer, pulse control means for intermittently varying the supply of fuel gas, at least one nozzle for a pilot light directed into the combustion chamber, and means providing a separate gas supply to said nozzle independent of the means for varying the supply of fuel gas.
Claim 7
Dependent Claim
97 words
A gas infrared radiator comprising a pre-chamber connected to gas and air supply pipes and a combustion chamber surrounded substantially on all sides by components, a plurality of individual pipes for supplying a gas air mixture and extending between the pre-chamber and the combustion chamber through a heat-resistant gas permeable barrier layer, pulse control means for intermittently varying the supply of fuel gas, at least one nozzle for a pilot light directed into the combustion chamber, and means providing a separate gas supply to said nozzle independent of the means for varying the supply of fuel gas.
Claim 8
Dependent Claim
25 words
A radiator according to claim 5, characterized in that the nozzle is surrounded by means forming a flow path for air or an air-containing medium.
Claim 9
Dependent Claim
44 words
A radiator according to claim 6 wherein said pre-chamber is supplied with a gas-air mixture from a mixing-chamber and separated from the combustion chamber by the aforementioned heat-resistant barrier layer, characterised in that the flow path is a duct extending throughout the barrier layer.
Claim 10
Dependent Claim
134 words
A gas infrared radiator, comprising: pre-chamber connectable to gas and air supply pipes; a combustion chamber surrounded substantially on all sides by components; a heat resistant, gas permeable barrier layer disposed between the pre-chamber and said combustion chamber; a plurality of individual conduits for supplying a gas and air mixture from the pre-chamber into the combustion chamber through said heat resistant barrier layer; pulse control means for supplying and intermittently varying the supply of fuel gas to said pre-chamber; at least one nozzle for a pilot light directed into the combustion chamber through said barrier layer, said nozzle being surrounded by means forming a flow path of said mixture into said combustion chamber; and means providing a separate gas supply to said nozzle independently of the means for varying the supply of fuel gas.
Claim 11
Dependent Claim
134 words
A gas infrared radiator, comprising: pre-chamber connectable to gas and air supply pipes; a combustion chamber surrounded substantially on all sides by components; a heat resistant, gas permeable barrier layer disposed between the pre-chamber and said combustion chamber; a plurality of individual conduits for supplying a gas and air mixture from the pre-chamber into the combustion chamber through said heat resistant barrier layer; pulse control means for supplying and intermittently varying the supply of fuel gas to said pre-chamber; at least one nozzle for a pilot light directed into the combustion chamber through said barrier layer, said nozzle being surrounded by means forming a flow path of said mixture into said combustion chamber; and means providing a separate gas supply to said nozzle independently of the means for varying the supply of fuel gas.
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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) | 1992-08-28 | 1993-02-27 | 1993-08-29 | $2000.00 | Window Closed / Lapsed |
| 7.5 Years (Year 8) | 1996-08-28 | 1997-02-27 | 1997-08-29 | $3760.00 | Window Closed / Lapsed |
| 11.5 Years (Year 12) | 2000-08-28 | 2001-02-27 | 2001-08-29 | $7700.00 | Window Closed / Lapsed |