Back to results
US 4,067,681 AGranted
Gas-fired smooth top range
AssigneeColumbia Gas System Service Corporation
InventorsEdward A. Reid, Jr., George W. Myler, James E. Payne
Life of this patent
Estimating the term…
Loading patent…
Loading patent…
AssigneeColumbia Gas System Service Corporation
InventorsEdward A. Reid, Jr., George W. Myler, James E. Payne
Estimating the term…
A gas cooking range of the smooth top type has four burners positioned under a single plate of heat-resistant glass/ceramic material; and a single igniter and safety control assembly is centrally positioned between the burners. The supply of gas to each of the burners flows through an ignition chamber where it is ignited, and it then flows through a combustion tube to a combustion chamber, where combustion is completed. Some air is mixed with the gas at the fuel supply control valve, and additional air is supplied through the ignition chamber. The burning gas mixture then flows through the combustion tube to the combustion chamber at the entrance of which an additional quantity of air is added to provide the remainder of air necessary for complete combustion. Air is drawn into the system, and the products of combustion are exhausted by a blower positioned at the lower rear of the range so that a negative pressure condition is maintained along the entire path of flow of the fuel gas from the control valve and through the combustion chamber.
In a method of producing heat from fuel gas, the steps of, delivering a controlled stream of fuel gas into a gas mixture passageway and simultaneously mixing with the fuel gas a stream of air which is less than that necessary to support combustion of the stream of fuel gas, passing the resulting gas mixture to an ignition zone, discharging said gas mixture at said ignition zone into a closed ignition passageway while simultaneously mixing it with a controlled quantity of air to produce an ignitable gas mixture, igniting the resulting gas mixture, passing the ignited gas mixture through said ignition passageway and thence to a continuous spiral combustion zone which extends along a heat transfer surface to a discharge zone and simultaneously adding additional air to said ignited mixture as it passes from said ignition passageway to said combustion zone, and withdrawing the products of combustion from said discharge zone.
Dependencies are inferred from the claim text.