Class 431/70 - Recycle through proving period on sensing of failure of established flame

Subclass of Class 431 - Combustion
Definition: Apparatus in which a sensing of flame failure, after the
No. of patents: 28
Last issue date: 09/30/2008

Number	Title	Issue Date
7428901	Cooking stove A cooking stove that prevents the execution of a process such as ignition of a burner when a touch switch changes from a non-sensing state to a sensing state. In STEP201, when a first touch switch, which is one of the touch switches provided in an operation, ...	09/30/2008
7044729	Gas burner control for a bake oven The system (1) for controlling the combustion (7) of a cooking oven burner (2), comprises in combination a thermostat valve (3) with a rotary hand knob (4) and a non-electric temperature sensor (6) for modulating the burner ...	05/16/2006
6929465	Timer circuit for valve activation in oil burner system The present invention is directed to an oil burner system having an electric cord set coupled between a controller and a valve associated with a pump. The electric cord set is operable to activate a solenoid valve associated with the pump for delivery of fuel oil to...	08/16/2005
6572363	System and method for detecting flame rollout in a furnace A method and system for detecting flame rollout is disclosed. The detection system includes a processor programmed to execute a furnace lockout when the flame proving signal is lost three times after successful burner ignition has been established on each...	06/03/2003
6494707	Limited recycle for primary controls An oil burner control system is disclosed in which recycling between a loss of combustion to re-establishment of combustion is limited by counting the number of times recycling occurs and causing a the system to stop recycling and go to lockout after the ...	12/17/2002
6439878	Apparatus for controlling combustion device When an error occurs to a combustion device, a microcomputer inside a control apparatus for the combustion device closes a safety valve thereby stopping gas supply to a gas burner. In a conventional control apparatus, when a power source resetting is actu...	08/27/2002
6413078	Restricted operating modes for oil primary Improved lockout control in oil primary controllers for oil heating systems which allows a reasonable number of user resets and ignition retries in the event of lockout, while minimizing the unwanted accumulation of oil in the combustion chamber of the he...	07/02/2002
6216683	Gas oven control A gas oven comprises at least a first burner element disposed within an oven cavity of the gas oven. A first control valve is disposed within a gas line connected to the burner element and to a gas source. The control valve controls gas flow to the burner...	04/17/2001
6089856	Pilot control assembly A pilot burner assembly for a gas burning heater which has a pilot fuel supply pipe and a pilot burner head with an inner chamber defined by a generally continuous sidewall. The pilot burner head has a middle body region with a side port defining a channe...	07/18/2000
6030205	Gas oven control A gas oven comprises at least a first burner element disposed within an oven cavity of the gas oven. A first control valve is disposed within a gas line connected to the burner element and to a gas source. The control valve controls gas flow to the burner...	02/29/2000
5655900	Gas oven control system An oven control system and a method are provided for controlling for a gas oven burner. A gas valve is operatively controlled to supply gas to the gas oven burner. A spark voltage supply is operatively controlled for generating ignition sparks near the ga...	08/12/1997
5348466	Heat exchanger system, fuel control system therefor and methods of making the same A heat exchanger system, a fuel control system therefor and methods of making the same are provided, the fuel control system having an electrical circuit means that comprises an ignition trial portion, a flame sensing control portion and a timer portion t...	09/20/1994
5277575	System and method for controlling the operation of a primary burner Disclosed is an electronic control system for controlling the operation of an oil burner heating system. The control system comprises a relay circuit having first and second relays. When the relays are closed, an external power source is connected to an i...	01/11/1994
5141431	Heat exchanger system, fuel control system therefor A heat exchanger system, a fuel control system therefor and methods of making the same are provided, the fuel control system having an electrical circuit means that comprises an ignition trial portion, a flame sensing control portion and a timer portion t...	08/25/1992
5085573	Hot surface ignition system for a gas furnace, control device therefor and methods of making the same A hot surface ignition system for a gas furnace or the like, control device therefor and methods of making the same are provided, the system comprising a burner, a settable thermostat, an electrically operable gas valve, a control unit, and an electricall...	02/04/1992
4997361	Hot surface direct ignition system for gas furnaces A low cost hot surface ignition system particularly adapted for use in gas furnaces and the like, the system including low voltage control and timing circuitry effective to control a gas valve and high voltage ignition circuitry incorporating a hot surfac...	03/05/1991
4976605	Hot surface ignition system for a gas furnace, control device therefor and methods of making the same A hot surface ignition system for a gas furnace or the like, control device therefor and methods of making the same are provided, the system comprising a burner, a settable thermostat, an electrically operable gas valve, a control unit, and an electricall...	12/11/1990
4856983	Hot surface direct ignition system for gas furnaces A low cost hot surface ignition system particularly adapted for use in gas furnaces and the like, the system including low voltage control and timing circuitry effective to control a gas valve and high voltage ignition circuitry incorporating a hot surfac...	08/15/1989
4746284	Hot surface direct ignition system for gas furnaces A low cost hot surface ignition system particularly adapted for use in gas furnaces and the like, the system including low voltage control and timing circuitry effective to control a gas valve and high voltage ignition circuitry incorporating a hot surfac...	05/24/1988
4711628	Hot surface ignition system for a gas furnace and method of making the same A hot surface ignition system for a gas furnace and method of making the same are provided, the system comprising a high voltage circuit for being connected to a source of high voltage AC current, the high voltage circuit having a hot surface igniter ther...	12/08/1987
4643668	Hot surface direct ignition system for gas furnaces A low cost hot surface ignition system particularly adapted for use in gas furnaces and the like, the system including low voltage control and timing circuitry effective to control a gas valve and high voltage ignition circuitry incorporating a hot surfac...	02/17/1987
4518345	Direct ignition gas burner control system A direct ignition gas burner control system includes an igniter, two serially-arranged gas valves for controlling the flow of gas to the burner, and a microcomputer and related circuitry for controlling energizing of the igniter and valves. The microcompu...	05/21/1985
4505668	Control of smoke emissions from a flare stack A measurement of the amount of infrared radiation coming from the flame associated with a flare stack is utilized to manipulate the flow of steam to the flare stack so as to reduce the emission of smoke from the flare stack when a combustible waste gas co...	03/19/1985
4465455	Start-up/shut-down for a hydrogen gas burner System for flame start-up/shut-down for a hydrogen gas mixture burner. An electrical probe igniter positioned adjacent the gas port outlet. On demand the igniter is actuated to heat and electrically heat a thermal switch. Responsive electronic controls ac...	08/14/1984
4452582	Independent, self-contained electronic spark ignition recycler An electronic spark ignition system for a heating apparatus which does not have a means of attempting repeated ignition attempts if prior attempts at ignition fail is forced into a recycling mode by an independent, self-contained electronic spark ignition...	06/05/1984
4325689	Automatic reset control for direct spark ignition systems A fuel ignition system for a heating apparatus includes a burner connected to a fuel supply, a valve for regulating the flow of fuel to the burner, an electrode assembly for producing a spark to ignite the fuel at the burner, an ignition system control mo...	04/20/1982
4303385	Direct ignition system for gas appliance with DC power source An ignition system for use with a source of dc (or full-wave-rectified) power without the need for an inverter includes a flame sensing relay and a checking relay interlocked to achieve lockout if the proper starting sequence or timing are not met or if a...	12/01/1981
4188182	Method and apparatus for igniting and reigniting combustible fuel Apparatus for igniting and reigniting combustible fuel emitted from a burner structure by the method of sensing ion current flow across an electrically-conductive spark gap defined in the region in which the fuel is emitted and then generating ignition sp...	02/12/1980

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Class 431/70 - Recycle through proving period on sensing of failure of established flame