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235results about "Combustion fail safe" patented technology
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Gas turbine premixing systems
InactiveUS20110016871A1Increased NOx emissionAccelerate emissionsContinuous combustion chamberTurbine/propulsion fuel supply systemsCombustorGas turbines
Methods and systems are provided for premixing combustion fuel and air within gas turbines. In one embodiment, a combustor includes an upstream mixing panel configured to direct compressed air and combustion fuel through a premixing zone to form a fuel-air mixture. The combustor also includes a downstream mixing panel configured to mix additional combustion fuel with the fuel-air mixture to form a combustion mixture.
Owner:GENERAL ELECTRIC CO
Method and control for testing air filter condition in HVAC system
A method and control for determining an air filter condition in an HVAC system forces a change in a motor speed for a fan for driving air through the air filter and into an environment to be conditioned. When the motor speed is changed, an expected change in temperature in the environment is monitored. If the actual change is not as expected, a determination may be made that the air filter is clogged.
Owner:CARRIER CORP
Electronic gas cooktop control with simmer system and method thereof
InactiveUS7255100B2Reduce heating powerHigh outputFuel supply regulationDomestic stoves or rangesControl systemElectromagnetic interference
An electronically activated gas cooktop control system, responsive to a touch-sensitive user interface, and capable of providing a predetermined range of cooking and simmer levels of BTU output, has two complementary heating modes of operation A first heating mode of operation is provided to produce a wide selection of simmer levels of BTU output, by electronically sequencing a solenoid-operated modulating gas valve “on” and “off”, at a predetermined level of flame. A second cooking mode of operation is provided by electronically modulating the level of flame, through use of a pulse-width-modulation (PWM) output signal to produce a wide selection of cooking levels of BTU output. An igniter system capable of insuring proper ignition of gas without generating harmful electromagnetic interference is also provided.
Owner:COMPUVALVE +1
Pressure Controller for a Mechanical Draft System
InactiveUS20070209653A1Mechanical apparatusAir supply regulationDifferential pressureAtmospheric pressure
Systems and method for controlling the flow of air through a mechanical draft system are disclosed herein. A pressure controller for controlling air pressure comprises an appliance controller configured to control the operation of a plurality of appliances, an intake fan controller configured to control the speed of an intake fan, and an exhaust fan controller configured to control the speed of an exhaust fan. The pressure controller also includes a processor configured to receive a differential pressure signal and to control the operation of the appliances, the speed of the intake fan, and the speed of the exhaust fan in response to the differential pressure signal.
Owner:ENERVEX
Self powered pelletized fuel heating device
InactiveUS20070221205A1Low costGood engineering designDomestic stoves or rangesSolid fuel combustionLow voltageEngineering
A self powered pelletized fuel heating device comprising a thermal electric generator (TEG) unit therein powering a typical collection of low voltage system components including a storage power unit. Non-typically, the heating device requires no external power supply and relies on thermodynamic principles using the pelletized fuel as a heat source. The TEG is configured and positioned optimally for conventional operation and installation requirements without modification to normal form or function.
Owner:LANDON RICHARD BENSON
Fan Assemblies, Mechanical Draft Systems and Methods
InactiveUS20090215375A1Facilitate independentFacilitate locally controlled ignitionDomestic stoves or rangesLiquid heating fuelDirect combustionControl theory
Fan assemblies, mechanical draft systems and methods are provided. In this regard, a representative mechanical draft system for use with multiple appliances includes: a chimney operative to direct combustion products from multiple appliances; a chimney fan operative to draw combustion products from the chimney; and a controller operative to adjust an operating speed of the chimney fan such that, responsive to a change in pressure in the chimney, the controller adjusts the operating speed of the chimney fan to maintain a desired pressure in the chimney.
Owner:GREENVEX
Multiple gas pilot burner
ActiveUS20090280448A1Small sizeLow costIncandescent ignitionPipeline expansion-compensationPower flowThermocouple
A multiple gas pilot burner assembly for a household heating appliance. The pilot burner includes an injector having a first conduit for receiving a flow of a first combustible fluid, a second conduit for receiving a flow of a second combustible fluid and a third conduit connected to and in fluid communication with the first and second conduits which is configured to receive the flow of the first combustible fluid from the first conduit or the flow of the second combustible fluid from the second conduit. A single nozzle at the outlet of the third conduit is provided for supplying a pilot flame. The assembly also includes a single flame igniter positioned to cause an ignition of the pilot flame at the nozzle and also a single thermocouple positioned to be heated by the pilot flame and to generate an electrical current when heated.
Owner:COPRECITEC
Systems and methods for automation of a control knob unit
InactiveUS20120325197A1Operating means/releasing devices for valvesDomestic stoves or rangesTransceiverProcess module
A system and method for automatically rotating a control knob unit on an appliance or other device to an Off position upon the occurrence of a safety event is provided. The control knob unit may be secured to and engaged with an operational shaft on the appliance which controls the flow of gas or power to the appliance. The system may include one or more detectors (or detector modules) that are configured to emit a signal upon an occurrence of the event, such as a fire, which may be an early indication of a developing emergency. The signal may be in the form of an audible alert, such as sound (or sound waves). A data transceiver processing module may receive a plurality of sound waves and analyze the plurality of sound waves for a variation in frequency (or Doppler Effect) to determine if any of the sound waves originate from the one or more detector modules.
Owner:LEGASPI FERDINAND VILLEGAS +2
System and methods for controlling a water heater
A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch indicating an insufficient level of airflow, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will also lock-out further burner operation after a predetermined number of consecutive shut downs occurs before the water is heated to a desired temperature during a single call for heating.
Owner:COPELAND COMFORT CONTROL LP +1
Fluid leakage detection apparatus and fluid leakage detection method
ActiveUS6851298B2Detects leakageEnsure correct executionDetection of fluid at leakage pointMeasurement of fluid loss/gain rateInlet valveEngineering
In a fluid leakage detection apparatus, hydrogen is supplied from a hydrogen tank to an FC stack of a fuel cell via first and second pipes. An inlet valve is provided between the hydrogen tank and the first pipe, and an outlet valve is provided between the first pipe and the second pipe. A controller serves to control valve opening a valve closing operation of the inlet and outlet valves, respectively. Those valves are closed in a state where the pressure within the hydrogen tank is made lower than the pressure within the first pipe, and the pressure within the second pipe is made lower than the pressure within the first pipe by operating those valves. Thereafter, the increase or decrease in the pressure within the first pipe is detected by a pressure gauge such that the leakage in the inlet valve or the outlet valve is determined. This makes it possible to detect the leakage both in the inlet valve and the outlet valve at the same time.
Owner:TOYOTA JIDOSHA KK
Gas turbine premixing systems
InactiveUS8616002B2Accelerate emissionsTurbine/propulsion fuel supply systemsContinuous combustion chamberCombustorEngineering
Owner:GENERAL ELECTRIC CO
Active Control of Flame Holding and Flashback in Turbine Combustor Fuel Nozzle
A system includes a turbine combustor fuel nozzle. The turbine combustor fuel nozzle includes a swirl vane. The turbine combustor fuel nozzle also includes an injection hole configured to inject fluid in a downstream region of the swirl vane. The injection of fluid in a downstream region of the swirl vane may be in response to detection of a condition indicative of a flame inside the turbine combustor fuel nozzle.
Owner:GENERAL ELECTRIC CO
Systems and methods for controlling a water heater
Owner:EMERSON ELECTRIC CO
Method, apparatus and system for controlling a gas-fired heater
InactiveUS20060172238A1Eliminate needReduce the introductionCombustion signal processingCombustion measurementsElectricityEngineering
The present invention provides a system, method and apparatus for controlling a gas-fired heater connected to a fuel source via a fuel source valve that includes one or more power sources, a temperature sensor, a pilotless igniter disposed within the gas-fired heater, a flame sensor disposed within the gas-fired heater and a controller electrically connected to the one or more power sources, the temperature sensor, the pilotless igniter, the flame sensor and the fuel source valve. The controller turns the pilotless igniter on for a first time period and opens the fuel source valve whenever the temperature sensor indicates that a temperature is less than or equal to a low temperature setting. The controller also closes the fuel source valve whenever the temperature sensor indicates that the temperature is greater than or equal to a high temperature setting or the flame sensor indicates that a flame has gone out.
Owner:SURE FIRE PILOTLESS BURNER SYST
Furnace panel leak detection system
ActiveUS20090148800A1Detection of fluid at leakage pointFurnace cooling arrangementsElectric arc furnaceCoolant flow
A furnace panel leak monitoring and control system for fluid-cooled panels in high temperature industrial furnaces such as, for example, smelting furnaces, blast furnaces and electric arc furnaces. The system performs at least two and up four functions simultaneously. At minimum, the system includes one or more temperature sensors received within the body of the panel to monitor temperature within the metal of the panel itself, and pressure sensors installed proximate the inlet and outlet of each panel coolant fluid circuit, which circuits are preferably periodically automatically tested, to check for leaks in the coolant circuits. In addition, the system preferably includes temperature and flow sensors for monitoring the furnace panel coolant circuit(s) for temperature and flow fluctuations, respectively, which may be indicative of leaking cooling circuits. The system triggers visual and / or audible alarm means to alert a human operator of an apparent coolant fluid leak situation.
Owner:BERRY METAL
Wireless fireplace damper control device
Owner:FLUE SENTINEL
Variable input radiant heater
A variable demand radiant heating system applies variable burner control technology to singular or mulit-burner radiant heating systems. A radiant heater consists of a burner connected to an elongated heat exchanger tube. The combustion air is supplied to the burner via blower or draft inducer. Fuel is supplied to the burner via fuel regulator. Fuel and air are mixed in burner and communicated to the inlet end of the heat exchanger tube. Spent products of combustion are expelled from the heat exchanger at the outlet end. The burner controls continuously vary gas supply pressure (volume), via a modulating gas regulator, and combustion air pressure (volume), via a variable speed blower, communicated to the burner mixing chamber, which in turn, varies the burner input on a continuous curve (not stepped or staged) within a pre-determined input range as heat demand varies.
Owner:ROBERTS GORDON INC
Water heater
A first period during which drain is not substantially generated on a surface of a water tube (4) of a heat exchanger (B1), and a second period as a transition during which an amount of drain on the surface of the water tube (4) is increased are provided. There are a plurality of kinds of fan-controlling data in which operation control contents of the fan (13) in the first and second periods in correspondence with change of conditions of entering water temperature or combustion level of the burner (1). The fan-controlling data are stored in a data table (90) of a controller (9). The controller (9) controls the fan (13) in accordance with the data, and an initial air-fuel ratio of combustion driving of the burner (1) is stabilized.
Owner:NORITZ CORP
Mechanical draft systems
A representative mechanical draft system for drawing exhaust gasses from a chimney includes: an exhaust fan assembly having: a housing defining a chamber and having opposing openings, the opposing openings having a centerline extending therebetween, a first of the openings being operative to intake a flow of gasses, a second of the openings being operative to exhaust the flow of gasses from the chamber; and a centrifugal fan having a motor and an impeller, the motor being mounted external to the housing, the impeller being positioned within the chamber, a rotational axis of the impeller being inclined with respect to the centerline extending between the openings of the housing.
Owner:ENERVEX
Method and system for determining lean blow out condition for gas turbine combustion cans
A method for determining a lean blow out condition for a combustor. In an exemplary embodiment, the method includes determining acoustical frequency data for the combustor, determining a combustor flame temperature based on the acoustical frequency data, determining an existing fuel / air ratio in the combustor based on the combustor flame temperature, and comparing the existing fuel / ratio to a lean blow out fuel / air ratio. A lean blow out condition for the combustor is indicated when the existing fuel / air ratio is about equal to the lean blow out fuel / air ratio.
Owner:GENERAL ELECTRIC CO
Method and Device for Regulating the Operating Line of a Gas Turbine Combustion Chamber
ActiveUS20090301097A1Avoid Flame InstabilityEasy to deployAnalogue computers for vehiclesFuel supply regulationCombustion chamberCombustor
A regulating device for regulating the course of a gas turbine plant has at least one sensor for sensing a measurement variable and for outputting a measurement signal which represents the measurement variable; at least one adjusting system for influencing air and / or fuel supply to a combustion chamber of the gas turbine plant on the basis of a correcting variable; and a regulator connected to the at least one sensor so as to receive the measurement variable and to the at least one adjusting system for outputting the correcting variable, the regulator being designed to determine the correcting variable on the basis of the measurement variable received and its deviation from a pilot variable. At least one sensor is designed to sense the variation in time of at least one burner or combustion chamber parameter as measurement variable.
Owner:SIEMENS ENERGY GLOBAL GMBH & CO KG
Micro-Pilot For Gas Appliance
InactiveUS20100015559A1Save energyReducing greenhouse gas emissionMechanical apparatusIncandescent ignitionCombustorFuel gas
A micro pilot for a gas hot water heater is provided. The micro pilot provides a flame that is substantially smaller than a typical pilot in a hot water heater during standby operation of the burner. Just prior to allowing gas to flow to the burner upon a call for heat, a pilot flame of sufficient size to ensure ignition of the burner is provided. In one embodiment this larger pilot flame is produced by providing an additional amount of bleed gas to the pilot to increase flame size. In another embodiment, bleed gas is provided to a separate booster pilot, which is ignited by the micro pilot. The flame from the booster pilot is then used to ignite the main burner. This design allows for the micro pilot to be positioned closer to the flame trap of a flammable vapor resistant hot water heater to ensure smooth ignition of any such vapor.
Owner:INVENSYS CONTROLS AUSTRALIA
Highly sensitive airflow direction sensing
InactiveUS8002199B2Simplicity of implementationEasy to installVolume/mass flow by thermal effectsTemperatue controlCombustionEngineering
Sensors, apparatus and methods are disclosed for detecting airflow direction between two volumes. The preferred airflow sensor includes a tube for conducting an airflow stream between the volumes, a first temperature sensor sensing ambient temperature in the first volume and a second temperature sensor sensing temperature of the airflow stream in the tube. A heat source heats air in the tube adjacent the end thereof communicating with the second volume and a comparator receives and compares output signals from the temperature sensors, providing an output indicative thereof. Various means are provided responsive to the output advancing appropriate response thereto. The disclosed sensors, apparatus and methods are particularly well adapted for indicating positive and negative pressure differentials at flues associated with combustion appliances.
Owner:HABEGGER MILLARD A
Combustion Control Device
ActiveUS20080092826A1Reduce capacityImprove compatibilityFluid heatersMechanical apparatusMicrocomputerCombustion
The present invention relates to a combustion control device incorporated in an apparatus such as water heater and provides the combustion control device having an improved configuration with a main controller and a sub controller, capable of employing a microcomputer with lower capability as the sub controller, and ensuring higher safety than ever before. Signals indicating a combustion state of a combustion apparatus are inputted into the main controller 35 and the sub controller 36 in parallel. Upon fulfillment of a predetermined condition of stopping, the main and sub controllers 35 and 36 each output a stop signal to cut off a current to be supplied to a device driving circuit 42. The conditions of stopping in outputting of the stop signal by the main and sub controllers are such that the sub controller 36 is less apt to execute the cutoff than the main controller 35.
Owner:NORITZ CORP +1
Combustion apparatus, method for combustion control, combustion control board, combustion control system and water heater
InactiveUS20120037096A1Equipment miniaturizationCompact apparatusFuel supply regulationMechanical apparatusCombustionControl system
A combustion apparatus includes combustion means generating combustion exhaust by combustion of fuel, heat exchange means exchanging heat of the combustion exhaust, and exhaust dilution unit supplying dilution air after the heat exchange by the heat exchange means and diluting the combustion exhaust after the heat exchange, and controls a temperature of the combustion exhaust after the heat exchange below a predetermined temperature by dilution by air supply.
Owner:PURPOSE CO LTD
System and Method to Reduce Standby Energy Loss in a Gas Burning Appliance
ActiveUS20100012048A1Reducing greenhouse gasReduces standby heat lossAir supply regulationDamper arrangementRelay valveCombustor
A system to reduce standby losses in a hot water heater is presented. The system utilizes a safety relay valve between the combination gas controller and the burner. The safety relay valve bypasses gas to a damper actuator valve to position a flapper valve located over the flue pipe. Once the flapper valve has opened to ensure combustion, the gas is allowed to flow back to the safety relay valve. Some of the bypass gas may be diverted to boost the pilot or to supply a booster. The safety relay valve is then opened to allow the gas supply to the burner. Once the burner is turned off by the combination gas controller, the small amount of bypass gas bleeds out of the damper actuator valve to close the flapper valve to reduce standby losses through the flue pipe, and to allow the safety relay valve to close tightly.
Owner:INVENSYS CONTROLS AUSTRALIA
Systems and Methods for Mitigating a Flashback Condition in a Premixed Combustor
InactiveUS20100180564A1Mitigate flashback conditionContinuous combustion chamberCombustion valves/nozzle/pumpsCombustion chamberCombustor
Owner:GENERAL ELECTRIC CO
Fiber optic sensors for gas turbine control
InactiveUS6978074B2Flexible to bendingLight weightContinuous combustion chamberMaterial analysis by optical meansCombustorPhotovoltaic detectors
An apparatus for detecting flashback occurrences in a premixed combustor system having at least one fuel nozzle includes at least one photodetector and at least one fiber optic element coupled between the at least one photodetector and a test region of the combustor system wherein a respective flame of the fuel nozzle is not present under normal operating conditions. A signal processor monitors a signal of the photodetector. The fiber optic element can include at least one optical fiber positioned within a protective tube. The fiber optic element can include two fiber optic elements coupled to the test region. The optical fiber and the protective tube can have lengths sufficient to situate the photodetector outside of an engine compartment. A plurality of fuel nozzles and a plurality of fiber optic elements can be used with the fiber optic elements being coupled to respective fuel nozzles and either to the photodetector or, wherein a plurality of photodetectors are used, to respective ones of the plurality of photodetectors. The signal processor can include a digital signal processor.
Owner:GENERAL ELECTRIC CO
System for controlling gas supply to a gas heater
In one aspect, the present invention is directed to a system for controlling the gas supply to a gas heater (such as a gas stove, a heating stove, and so on), the system comprising: an electric valve, for blocking and unblocking a gas supplying pipe to said gas heater; a control unit, for controlling the operation of said electric valve; a timer, for determining a delay in activation of said electric valve to block said gas supply; and a remote-control unit, for providing, in a mobile manner, user interface for setting said timer; and a processing unit, for concentrating information from said timer, and activating the operation of blocking gas supply passage whenever the time of said timer runs out.
Owner:BRENNER DANI
Systems and methods for controlling a water heater
A control for a water heater is provided that comprises a pressure switch for sensing a predetermined level of airflow sufficient for maintaining proper burner operation, and a temperature sensing means for sensing the temperature of the water in the tank. The control further comprises a processor for controlling the operation of the burner to maintain the water temperature above a predetermined value. When the processor receives a signal from the pressure switch or temperature switch indicating a malfunction, the processor shuts down the burner and subsequently attempts to restart the burner. The processor will lock-out further burner operation after a predetermined number of consecutive shut downs occurs, and will communicate any malfunction information to a remote display device.
Owner:COPELAND COMFORT CONTROL LP
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