US4861261A
Expired / Lapsed
US
⏱️ 0.0 years remaining
Method of operating a gas-infrared radiator, and the gas-infrared radiator
Assignee: Individual
•
Filing: 1987-10-05
•
Granted: 1989-08-29
•
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 00:50
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.
References Cited (Backward Citations)
US3091224A
Cited
DE1401165A1
Cited
US3529916A
Cited
GB1170041A
Cited
DE1629952A1
Cited
US3661499A
Cited
DE2042364A1
Cited
DE2545282A1
Cited
US4416618A
Cited
US4276857A
Cited
GB2076996A
Cited
JPS58193021A
Cited
US4515554A
Cited
EP0136928A1
Cited
US4460123A
Cited
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 |