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Class 431/29 - Control of purger, of scavenger or of combustion start-up delay period


Subclass of Class 431 - Combustion
Definition: Apparatus wherein a timing, retarding or programming means
No. of patents: 55
Last issue date: 11/02/2010


1    
NumberTitleIssue Date
7824177Combustion apparatus
Provided is a combustion apparatus that can positively prevent a combustible gas present in the vicinity from catching fire in performing prepurge, which involves exhausting air from a combustion chamber provided with a burner, before igniting the burner. The combus...
11/02/2010
7607914Combustion type waste gas treatment system
A combustion type waste gas treatment system capable of oxidatively decomposing a hazardous combustible waste gas while heating efficiently with a structure which allows the waste gas to mix with an auxiliary burning gas efficiently without the occurrence of backfir...
10/27/2009
7252502Method and system for combined standing pilot safety and temperature setting
The method and apparatus provides a controller (which might comprise a microprocessor) that can control gas flow to a pilot burner in fluid communication with a manual pilot valve and an automatic pilot valve. The exemplary embodiments can comprise a selectable inpu...
08/07/2007
7223098Ignition unit
An ignition unit promotes the efficiency of assembly because connections on the high voltage output side and the ground side are completed by a single operation, when an ignition electrode part and a main unit are connected together directly. A guide rail of the mai...
05/29/2007
6948929Combustion type waste gas treatment system
A combustion type waste gas treatment system is capable of oxidatively decomposing a hazardous combustible waste gas while heating efficiently with a structure which allows the waste gas to mix with an auxiliary burning gas efficiently without the occurrence of back...
09/27/2005
6929465Timer 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
6835062Fuel oil supply circuit for an oil burner having a solenoid valve in parallel circuit with diaphragm valve for controlling oil flow at start up
A fuel oil supply circuit that includes two bypass mechanisms for burner startup including an electrical valve bypass in parallel circuit with a mechanical valve bypass. The fuel oil supply circuit includes an oil pump that is adapted to pressurize fuel oil and a do...
12/28/2004
6478574Pump purge for oil primary
An oil burner control system is disclosed in which an extended time may be temporarily selected, in situations such as initial set up or periodic maintenance, for priming the pipes, filters and pumps, before a safety lockout of system operation occurs, wh...
11/12/2002
6390807Pot type oil burner with unnoticeable bad odor
The present invention relates to a structure in which an unburnt gas can be prevented from being diffused into a room while suppressing the generation of the unburnt gas during the extinction operation of a pot type oil burner. During the extinction opera...
05/21/2002
6216683Gas 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
6132203Method and apparatus for burning oils of varying viscosity
Disclosed is an oil burning system that is capable of burning oils of varying viscosities, including high viscosity waste oils and low viscosity heating oils. Suitable as a new installation or a retrofit modification, the present invention incorporates th...
10/17/2000
6030205Gas 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
5771879Heated makeup air system for a commercial kitchen
A heated air makeup unit comprises a duct structure having a surrounding wall, a fan for moving air through the duct structure, and a gas burner mounted in the duct structure for heating air being moved past the burner. A pair of laterally spaced convergi...
06/30/1998
5655900Gas 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
5456597Intelligen transient eliminator for an ignition system
The present invention relates to an intelligent transient eliminator which allows a gas ignition system to prevent gas valves from being turned off by a pressure switch in response to a transient pressure wave. The transient eliminator is preferably provi...
10/10/1995
5453004Method for operation of an oil evaporation burner and an oil evaporation burner for carrying out the method
The present invention is concerned with a method of operating an oil evaporation burner for heating boilers which, for NOX reduction, are operated with an exhaust gas return from the combustion chamber of the heating boiler into the burner. In oil evapora...
09/26/1995
5386815Electric control apparatus for pulse combustion device
An electric control system for a pulse combustion device of the type which includes a combustion chamber mounted within a liquid vessel of a liquid heating apparatus, fuel and air inlet valves arranged to supply a mixture of fuel and air into the combusti...
02/07/1995
5360335Fuel burner control system with selectable standing pilot mode
A burner control system with an interrupted or intermittent type of pilot burner has a special feature allowing transitions between a pilot flame hold state where the pilot flame only burns and the run state where the main burner is operating. Each transi...
11/01/1994
5328354Incinerator with auxiliary gas evacuation system
An incinerator for combustible or thermally-decomposable gases includes a device which insures that gas continues to flow through the incinerator in the event of failure of the scrubber fan connected to the outlet of the incinerator. When the scrubber fan...
07/12/1994
5282738Liquid fuel feeding method and liquid fuel burning apparatus
The liquid fuel burning apparatus includes a fuel tank, a burning unit for burning the fuel, an electromagnetic pump for sucking the fuel from the tank, a feeding pipe for feeding the sucked fuel to the burning unit, and a control unit for controlling the...
02/01/1994
5078317Heater for mobile units
In space heaters with pressure atomization burners, which have a small combustion chamber volume, good mixing of air with fuel is achieved practically only in the case of relatively high air flow velocities, which leads, however, to difficulties in terms ...
01/07/1992
5059114Heating apparatus and method
A purging system for a heating apparatus according to the present invention includes a pair of three-way valves interposed serially between a burner head and a supply of combustible fluid. Each valve is connected to a switch for switching between two mode...
10/22/1991
4995806Deodorizing device for oil stoves
An oil stove comprises a combustion wick for burning oil, a device for extinguishing the fire at the combustion wick, and a deodorizing device for absorbing or removing gases causing smells that are produced when the burning portion at the combustion wick...
02/26/1991
4934286Apparatus and method for the disposal of waste
A process for the disposal of waste comprising the steps of passing a waste into a sealed container, purging the sealed container of oxygen, heating the interior of the sealed container to a temperature of greater than 2,700° F. so as to convert the wast...
06/19/1990
4931011Control and method for operating a vaporizer burner
Formerly unpleasant blue smoke was generated in a vaporizer burner for auxiliary heaters for motor vehicles once the fuel supply was cut off and the flame died down, as the remaining fuel was merely heated up, but not burnt. According to the invention the...
06/05/1990
4913128Burner apparatus
A burner apparatus comprising: a burner plate, a proportional directional valve through which fuel gas flows into said burner plate, a blower which supplies air to said burner plate, a thermal sensor which detects the burning condition of said burner plat...
04/03/1990
4891004Control of energy use in a furnace
A microprocessor control determines, in the course of initiating a heating cycle, whether the blower is operating in the continuous mode, and if it is, the control prompts the blower to be turned off prior to the ignitor being turned on. In this way, the ...
01/02/1990
4850852Gas valve shut off method and apparatus
Provision is made for sensing when the gas valve relay contacts are welded, or stuck, in the closed position and for responsively turning off the inducer motor when that occurs. This in turn causes the pressure switch to open to thereby cut off the power ...
07/25/1989
4828484Gas valve relay redundant safety
A fail safe redundancy circuit for controlling a gas valve relay in a gas fired furnace or similar burner is disclosed. The status of the relay contacts is monitored and if those contacts are in the position for enabling the gas valve prior to an ignition...
05/09/1989
4711628Hot 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
4688546Deodorizing device for oil stove
An oil stove comprises a combustion wick for burning oil, a device for extinguishing the fire at the combustion wick, and a deodorizing device for absorbing or removing gases causing smells produced when the burning portion at the combustion wick is extin...
08/25/1987
4668179Oil burner of the wick ignition type
An oil burner of the wick ignition type is disclosed which is capable of effectively preventing the generation of bad odor due to unburned fuel oil gas after the fire-extinguishing operation as well as during the operation. The oil burner includes an air ...
05/26/1987
4634367Carburetion type burning apparatus
A carburetion type burning apparatus comprises a fuel tank, a pump for feeding fuel in the tank, a carburetion chamber for evaporating the fuel, a nozzle for ejecting fuel gas from the carburetion chamber, a burner and a needle for opening and closing the...
01/06/1987
4634369Purging process
An improved purging process in which purge gas is flowed through a flare system at a sufficient flow rate to minimize or at least acceptably control the rate of back flow of air migration into the exit port of the system. The flow of purge gas is periodic...
01/06/1987
4626269Automated system for sealing a mount in a cathode-ray tube
A system for sealing a mount in a cathode-ray tube using first and second tiers of burners includes a first valve in an oxygen supply line and a third valve in a fuel supply line connected to the first tier, and a second valve in the oxygen supply line an...
12/02/1986
4559006Purging process
An improved purging process in which purge gas is flowed through a flare system at a sufficient flow rate to minimize or at least acceptably control the rate of back flow of air migration into the exit port of the system. The purge gas is periodically ter...
12/17/1985
4543056Safety device for fan heater
The safety valve of a fan heater is operated by a detector pipe, the outlet of which is shielded from its inlet and communicates with the warm wind circulating fan of the heater to forcibly draw burned gas into the detector pipe for stable flow therethrou...
09/24/1985
4518345Direct 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
4451227Flame safeguard sequencer having switch test functions
The high fire and low fire switches normally operated by a damper in a fuel burner installation are verified by a switch test function. In the event that the switches are malfunctioning, the fuel burner sequence is extended to compensate, or the sequence ...
05/29/1984
4451226Flame safeguard sequencer having safe start check
A purge time hold circuit is provided in a flame safeguard sequencer to in turn provide a safe start check of a burner control system. If a flame is indicated during a prepurge period, the purge time hold means will reset to a zero status and the timer wi...
05/29/1984
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