| Class / Patent application number | Description | Number of patent applications / Date published |
|---|
| 431075000 |
By combustion or combustion zone sensor
| 32 |
| 431089000 |
By condition of burner feed or feed means
| 16 |
| 431072000 |
Of igniter and feed controlled sequence
| 13 |
| 431042000 |
Sensor of first burner controls second burner, e.g., pilot and main, etc.
| 10 |
| 431036000 |
Of or by burner feed supply heating structure
| 7 |
| 431066000 |
Sensor of electrical condition or temperature of electrical igniter controls fuel feed
| 6 |
| 431020000 |
Of or by exhaust damper or exhaust pump | 5 |
| 20090191495 | Apparatus and method for controlling a damper in a gas-fired appliance - A damper mechanism for a gas-fired appliance is disclosed. The damper mechanism is mechanically operated in response to changes in pressure within a portion of the appliance. Changes in gas pressure operate to displace a diaphragm, thereby moving a linkage attached to a flue damper, such that the damper can be moved between open and closed positions. An interim damper control activation arm can pivot in response to movement of the linkage to actuate electrical switches, which act to close a magnetic pilot valve when the damper is in a partially-opened or partially-closed position. | 07-30-2009 |
| 20110244408 | HEATER - A heater including a heat dump opening and a heat dump cover moveable between an open and a closed position to selectively block flow of fluid through the heat dump opening. The heat dump opening is formed in the top of the housing, and the heat dump cover is biased toward the open position. The cover moves to an open position in response to a sensed preselected limit temperature to vent excessively heated air to ambient to prevent damage to the heater and a duct system and a building to which the heater may be connected. Air escaping the heater via the heat dump opening may cause replacement air to be drawn into the heater to cool the heater, including electrical components of the heater located near an inlet and an outlet of the heater. | 10-06-2011 |
| 20140127632 | Draft Inducer for Low Power Multistage Furnaces Utilizing an Electronically Commutated Motor System and an Associated Method of Use - A furnace assembly comprising a non-condensing furnace with a draft inducer. The draft inducer includes a permanent magnet electrically commutated motor and a draft inducer blower fan. The motor includes a stator, a rotor, a motor cooling fan, and a controller. The rotor being rotatable relative to the stator, the fan being operatively coupled to the rotor such that rotation of the rotor causes rotation of the fan, the controller being configured to selectively operate the motor in first and second different torque ranges of the rotor, with the first and second torque range operating within a fixed percentage and within a fixed percentage of each other. The controller being configured such during normal operation, the motor is not operable at any torques between the first torque range and the second torque range except during transitionary periods. | 05-08-2014 |
| 20140147797 | System and Method for Controlling a Furnace - Controlling a modulating gas furnace by monitoring a differential pressure associated with the modulating gas furnace using a low pressure limit switch configured to actuate at a first pressure, an intermediate pressure limit switch configured to actuate at a second pressure, and a high pressure limit switch configured to actuate at a third pressure, the second pressure being between the first and third pressure, selectively operating the modulating gas furnace in one of a cycling mode, a modulating mode in a lower range, and a modulating mode in an upper range, the modulating mode in the lower range being associated with an output capacity range between the output capacity ranges of the cycling mode and the modulating mode in the upper range, and selectively operating the furnace in response to at least one of the low pressure limit switch, the intermediate pressure limit switch, and the high pressure limit switch. | 05-29-2014 |
| 20140154635 | FURNACE EFFICIENCY TUNING DEVICE - A gaseous fuel fired furnace having a vapor condensing flue gas vent conduit, a flue gas flow restrictor disposed in the vapor condensing flue gas vent conduit having a flue gas upstream side and a flue gas downstream side, and a condensate bypass conduit extending around the flue gas flow restrictor having a condensate inlet in fluid communication with the flue gas downstream side of the flue gas flow restrictor and a condensate outlet in fluid communication with the flue gas upstream side of the flue gas flow restrictor. | 06-05-2014 |
| 431033000 |
Of extinguishing means | 5 |
| 20080241771 | Self-extinguishing relightable wick for use on candles and the like - A self-extinguishing wick for use in a candle has a flame extinguishing compound contained in an area within the self-extinguishing wick. The flame extinguishing compound produces a blowing reaction, and that blowing reaction extinguishes a flame on that self-extinguishing wick. | 10-02-2008 |
| 20090233249 | Self-extinguishing candle - A self-extinguishing candle having at least one layer of dry fire-suppressant material is disposed adjacent to the candle wick. The fire-suppressant material extinguishes a flame burning down the wick on contact. Providing the candle with layers of the fire-suppressant material between layers of the candle body allows the candle to self-extinguish then be relighted after removal of excess fire-suppressant material. | 09-17-2009 |
| 20090280446 | Candle holder with self-extinguishing flame device - A self-extinguishing candle flame apparatus is provided, the apparatus comprises: a base; a post having opposing ends, at least a portion of the first end of the post is attached to the base; a pliable wax coil having opposing ends, at least a portion of the wax coil being situated upon the base, the wax coil forming a candle, the candle comprising an elongated wick being situated within the wax coil, at least a portion of the wick protruding from one end of the wax coil; and a self extinguishing device comprising at least two sections that form a clamp, at least a portion of each of the two sections being attached to a spring, each of the sections having opposing ends, the first end of each of the two sections comprises a head and the second end of each of the two sections comprises an arm, the first and second sections being connected at a joint, during a closed position, each of the heads contact one another and forms an extended rim with side walls and an aperture therebetween designed to receive a portion of the wax coil, the extended rim with the side walls forming a height that when the candle burns down within the aperture, the flame is extinguished by operation of oxygen deprivation. | 11-12-2009 |
| 20100173254 | METHOD FOR EXTINGUISHING A CANDLE AT TIMED INTERVALS USING A COMBUSTIBLE MATERIAL - A method for extinguishing a candle at timed intervals using a combustible material is disclosed. In one exemplary embodiment, the method includes: utilizing a combustible composition adapted for application to a wick segment; utilizing a combustible first wick segment; coupling a combustible second wick segment to the combustible first wick segment; placing the combustible second wick segment adjacent to the first wick segment; and configuring the combustible second wick segment to, as the combustible first wick segment, once ignited, burns down to the combustible second wick segment, interrupt and slowly self-extinguish the burning of the first wick segment. The candle wick is configured to be relit, post extinguishment, without having to physically remove a non-combustible barrier. A combustible composition also is disclosed. A candle further is disclosed. | 07-08-2010 |
| 20130302740 | Candle Safe - A motion-sensitive candle holder device is disclosed that extinguishes the flame upon sensing movement. The candle holder device comprises a base for retaining a candle, a motion sensor, and a flame extinguishing device. The motion sensor is secured to the base and detects any vibrations or movements of the base or in the vicinity of the base, and when activated, automatically triggers the flame extinguishing device. The flame extinguishing device is secured to the base and comprises a fan and a motor mechanism for operating the fan. A plurality of air tubes extend upward from the base. The air tubes are hollow and comprise apertures positioned at a predetermined distance along a length of each air tube for expelling air. The motor mechanism engages the fan to expel air up through the plurality of air tubes to be further expelled out of the apertures to extinguish a candle flame. | 11-14-2013 |
| 431022000 |
By sensing of gas leakage, flashback or escaped flame | 3 |
| 20090004612 | Gas-Fired Heating Appliance Having a Flammable Vapor Sensor Control Device - A gas-fired heating appliance includes a burner, a gas valve module for supplying a fuel gas to the burner, a power module for applying a voltage to the gas valve module, and a flammable vapor sensor module for detecting a flammable vapor. The flammable vapor sensor module interrupts the voltage to the gas valve to shut off the gas valve and the burner when the flammable vapor module detects the presence or a predetermined concentration of flammable vapor. The voltage of the power module is applied to the gas valve module through the flammable vapor sensor module. The voltage to the gas valve module is interrupted if the flammable vapor sensor module is short-circuited. This arrangement is tamper-resistant to promote a safe operation of the gas-fired heating appliance. | 01-01-2009 |
| 20090061367 | APPLIANCE HAVING A SAFETY STRING - A gas-fired appliance is disclosed that includes a gas valve powered by a power source. A plurality of switching units, each responsive to a condition of the appliance, are arranged in series between the gas valve and the power source. Each switching unit includes an emitter, such as an emitter of an optocoupler, that is used to monitor the opened or closed status of a switch in the switching unit. When at least one switch opens, power to the gas valve is reduced preventing the gas valve from operating. However, because this reduced power is provided to each subsequent switching unit, each optocoupler can be monitored regardless of the opened or closed status of previous switching units. As such, one or more open switches can be detected simulataneously. | 03-05-2009 |
| 20100330515 | GAS SHUTOFF DEVICE AND ALARM-COMPATIBLE SYSTEM METER - An object of the invention is to appropriately control the use limit function of an appliance according to the concentration level of CO gas. A gas shutoff device is made up of a flow rate registration unit | 12-30-2010 |
| 431060000 |
Of sequential operation of plural burners, e.g., pilot and main, etc. | 2 |
| 20120045725 | COMBUSTOR - Provided is a combustor that is made compact and achieves NOx reduction. In the combustor ( | 02-23-2012 |
| 20130040253 | FURNACE, A HIGH FIRE IGNITION METHOD FOR STARTING A FURNACE AND A FURNACE CONTROLLER CONFIGURED FOR THE SAME - The disclosure provides a controller for a multistage gas furnace, a multistage gas furnace and computer readable medium for performing a method to operate a furnace. In one embodiment, the controller includes: (1) an interface configured to receive a heating call and (2) a corrosion reducer configured to ignite the gas furnace at a high fire operation based on if an indoor circulating fan of the gas furnace is active. | 02-14-2013 |
| 431069000 |
Shutdown by sensed absence of flame in proving period | 2 |
| 20080206692 | Device for remotely controlling ignition of a gas appliance by transmitting and receiving RF waves - An ignition control device including a controller section and a remote control section for a gas appliance (e.g., a gas stove or a gas water heater) is disclosed. A signal communication between the controller mounted on a burner of the gas appliance and the remote control section held by the hand is done by transmitting and receiving RF waves therebetween. The invention can correctly ignite the gas appliance and audibly inform a user of any ignition failures or abnormal conditions. | 08-28-2008 |
| 20100196834 | Oven Burner Flame Sensing Apparatus - Apparatus for sensing the presence of a flame issuing from the flow of fuel through an elongate oven burner comprises an electrical current sensor immersed in a flame having carbon atoms which support such current. The fuel is ignited by a spark igniter. Should no flame exist after a predetermined time interval, or if the flame is extinguished, the supply of fuel to such burner is terminated and the spark igniter is disabled. | 08-05-2010 |
| 431029000 |
Control of purger, of scavenger or of combustion start-up delay period | 2 |
| 20090017405 | Method for Producing a Hot Gas By Oxidation Comprising a Delay Prior to Scavenging - The invention relates to an optimized method for producing a hot gas by oxidation of an active material having an oxidized form and a reduced form using a rotary reactor or a simulated-rotation reactor. According to the invention, the production cycle comprises a flow interruption between an oxidation stage and a scavenging stage. | 01-15-2009 |
| 20120258410 | OXY-HYDROGEN FUEL INTEGRATION AND CONTROL SYSTEM - An oxy-hydrogen generator control system may include an oxy-hydrogen generator for fuel production on demand. A controller may determine if ignition is present in a burner assembly prior to generating the oxy-hydrogen fuel and providing it to the burner assembly. The controller may also purge system lines of any residual oxy-hydrogen fuel when heating is no longer needed. | 10-11-2012 |
| 431086000 |
By manually started timer or retarder, or by time of day device | 2 |
| 20120100494 | Burner Assembly - A burner assembly comprising a burner element ( | 04-26-2012 |
| 20120115096 | DEVICE FOR CONTROLLING GAS SUPPLY TO A BURNER - A gas supply control device for an apparatus, particularly a coking apparatus, includes timing means ( | 05-10-2012 |
| 431062000 |
Of diverse feed or feed rate in starting, e.g., enriching fuel mixture in starting, etc. | 1 |
| 20110027731 | Combustion Method and Apparatus - A burner has a port facing into a combustion chamber along an axis. A secondary fuel injector structure has secondary fuel injection ports that face into the combustion chamber at locations spaced radially outward from the burner port. A tertiary fuel injector structure has tertiary fuel injection ports that face into the combustion chamber in directions perpendicular to the axis at locations spaced axially downstream from the secondary fuel injection ports. | 02-03-2011 |
| 431028000 |
Actuation sequence of electric feed heater and feed flow controller or igniter | 1 |
| 20120094240 | HOT SURFACE RE-IGNITION CONTROLLER - A hot surface re-ignition controller for use with a transformer for powering a hot surface igniter in a gas appliance. The design includes flame detection circuitry for interfacing with flame detecting electrodes and is completely implemented in analog circuitry to provide reliable operation in harsh environments. | 04-19-2012 |
| 431023000 |
Of means protecting burner component from combustion heat | 1 |
| 20120208139 | HIGH CAPACITY FUEL-FIRED LIQUID HEATING APPARATUS - A fuel-fired high capacity liquid heating appliance, representatively a boiler or a water heater, has a fluid heat exchanger extending around a combustion chamber into which first and second fuel burners extend, the first and second burners respectively having associated blowers for supplying combustion air thereto. Illustratively, the combustion chamber is oval-shaped, with the burners extending into opposite ends the combustion chamber If one of the burners is not firing while the other burner is firing, a control system starts the non-firing burner's blower, to protect it from overheating by the firing burner, if the control system senses an excess temperature in the non-firing burner. The heat exchanger comprises a series of fluid receiving tubes extending between baffle-free header structures iteratively sized to equalize fluid flow rates through the heat exchanger tubes over a wide flow rate range. | 08-16-2012 |
| 431019000 |
Responsive to combustion chamber pressure | 1 |
| 20140051029 | BURNER INSTALLATIONS AND METHODS OF COMMISSIONING AND OPERATING BURNER INSTALLATIONS - A burner installation includes a stack, a burner, a fuel valve, an air valve and a control device including a store storing burner pairs of values of air and fuel valve settings at firing rates and for controlling air and fuel valve settings. A stack flow regulator adjusts flow of combustion products through the stack and a pressure sensing arrangement monitors pressure of combustion products downstream of the burner. Respective pairs of stack flow regulator setting values and a measured value from the pressure sensing arrangement are stored for pairs of air and fuel valve settings values. The control device receives a feedback signal from the pressure sensing arrangement for comparing an actual pressure value with a stored pressure value and to trim the stack flow regulator setting to cause the actual pressure value from the pressure sensing arrangement to move closer to the stored pressure value. | 02-20-2014 |
| Entries |
| Document | Title | Date |
|---|
| 20080220384 | AIR QUALITY SENSOR/INTERRUPTOR - An air quality sensor and interrupter system includes an air quality sensor to measure the air quality around a gas appliance and an appliance shut-off device to turn off the gas appliance in response to a signal from the sensor indicating unsafe air. An exhaust can also be activated to remove the unsafe air. Unsafe air can be indicated by a measurement of 18.5% or less oxygen in the air. If the sensor fails, an alarm can alert the user and the appliance shut off until the sensor is replaced or repaired. A bypass allows the user to keep the appliance turned on, but only for a limited amount of time. The user can keep utilizing the bypass to keep the appliance turned on for extended periods of time. | 09-11-2008 |
| 20090047610 | Remote control linearly regulated fuel valve - A linearly regulated fuel valve system is provided that includes a slotted conical rotatable plug component that is received in a conical cavity formed in a valve body which can be remotely controlled. The slotted plug serves to establish multiple flow paths through the valve body when rotated so as to align an opening formed in the cavity wall with an orifice formed in the side of the plug. The rotational orientation of the plug with respect to the wall and the orifice in the plug is set by a latch element permitting graduated stepwise adjustment settings such as high, medium, low and shut off of gas flow through the valve. Accordingly, the unique system may be adjusted by remote controlled to a wide range of settings by a single cone having a constant channel for fuel flow. | 02-19-2009 |
| 20090325112 | CATALYST DEGRADATION PREVENTING APPARATUS AND LOW NOx COMBUSTION APPARATUS - Provided is a catalyst degradation preventing apparatus, which is for a catalyst device containing a catalyst component that comes into contact with gas to chemically change the gas, in which the catalyst device is provided with a poisoning substance removing device on a primary side thereof, for removing a poisoning substance which is contained in the gas and adsorbs to the catalyst component or forms a compound with the catalyst component. Further, the poisoning substance removing device and the catalyst device are provided with an interval placed therebetween and to be exchangeable with each other, or a carrier of a component that adsorbs to the poisoning substance of the poisoning substance removing device or forms a compound with the poisoning substance and a carrier of a catalyst component of the catalyst device are integrally formed so as to be exchangeable. According to the apparatus, the decrease in performance of the catalyst device can be prevented, and the effect of low pollution can be retained for a long period of time. | 12-31-2009 |
| 20100136493 | LOW NOx COMBUSTION APPARATUS - Prvided is a catalyst degradation preventing apparatus of a catalyst device containing a catalyst component that comes into contact with gas to chemically change the gas, including a burner for burning a fuel by combustible air to generate a gas containing nitrogen oxides by combustion, an endothermic device for absorbing heat from gas, a catalyst device having a catalyst component for decreasing nitrogen oxides contained in the gas after passing through the endothermic device, and a first poisoning substance removing device for removing a poisoning substance containing at least sulfur, which is contained in the fuel and adsorbs to a catalyst component or reacts with the catalyst component to form a compound. According to the apparatus, the decrease in performance of the catalyst device is prevented, and the effect of decreasing pollution can be retained over a long period of time. | 06-03-2010 |
| 20100183992 | DEVICE FOR LIMITING THE EXHAUSTING OF COMBUSTION FLUE GASES AT THE INLET OF A FURNACE FOR REHEATING STEEL PRODUCTS - The invention relates to a device for limiting the combustion fume exhaust towards the outside of a continuous furnace, especially a tunnel furnace, for reheating iron and steel products, especially slabs, at the opening located at the entrance of the furnace. The first row of burners consists of at least two burners ( | 07-22-2010 |
| 20110244407 | COMBUSTION CONTROLLING DEVICE - Two controlling devices, namely a combustion controlling device controlling the combustion of a combustion furnace, and a safety controlling device checking the operation of the devices wherein the operations are controlled by the combustion controlling device. This enables safer control of combustion because if there is a fault in either the combustion controlling device or the safety controlling device, a process can be performed by the other device to stop the combustion. Additionally, because the controlling device for controlling the structural elements that control the combustion in the boiler system and the controlling device for operational checks of the outputs from those structural elements are separate, if there is a failure in any of the structural elements or controlling devices, that failure can be detected reliably, enabling safer control of the combustion. | 10-06-2011 |
| 20120288806 | Flame Sense Circuit for Gas Pilot Control - A flame sense circuit for a gas burner control employs a flame rod for flame rectification. An AC source applies an AC wave through a capacitor to the flame rod, and the flame rod is also connected via a resistive voltage divider to a DC voltage source. A voltage divider node is connected to a voltage follower, which impedance-matches an ADC input of a microprocessor controller. The flame sense circuit senses conditions of no-flame, and flame rod in contact with or leaking to ground, and when flame is present can quantify sensed flame as good, weak and marginal. | 11-15-2012 |
| 20130224669 | METHOD, SYSTEM AND APPARATUS FOR FIRING CONTROL - Disclosed herein is a method of controlling the air to fuel ratio in a burner containing a venturi assembly. The venturi includes an air inlet, a primary fuel inlet with a converging section, a throat portion downstream from the converging section, a diverging section downstream from the throat portion, an outlet, and a secondary gas inlet disposed downstream from the converging section and upstream from the outlet. The method comprises introducing fuel into the fuel inlet, receiving air through the air inlet by inspiration, and feeding a gas through the secondary gas inlet, the flow rate and content of the gas fed through the secondary gas inlet being selected to result in a desired air to fuel ratio through the outlet. A method of firing a heater, a burner, a furnace and firing control systems also are disclosed. | 08-29-2013 |
| 20140205957 | COMBUSTIBLE FLUID CUTTING SAFETY SYSTEM - Embodiments of the present invention provide components and a system for providing a safer environment for using a cutting torch. The system includes a cutting torch and a control box. There is communication from the user to the control box to allow fluids to flow to the torch. The control box includes closed biased valve(s) such that if there is a condition where there is no instruction from the troch to the control box and/or power is lost, the valves will shut, preventing fluid from flowing into the torch. | 07-24-2014 |
| 20150037740 | Gas Valve Assembly - An assembly for controlling the flow of a gas to a gas burner. The assembly including a rotational regulating valve and an electromagnetic safety valve. The regulating valve is rotational between a first angular position corresponding to a closed position and a second angular position corresponding to an open position. The safety valve includes a valve member that translates axially between a first axial position corresponding to a closed position and a second axial position corresponding to an open position. An operating shaft is operably coupled to the rotational regulating valve and to the electromagnetic safety valve and is rotatable between angular positions corresponding to the closed and open positions of the rotational regulating valve and is axially translatable between axial positions corresponding to the closed and open positions of the valve member of electromagnetic safety valve, axial translation of the operating shaft is not permitted when the angular position of the operating shaft corresponds to an open position of the rotational regulating valve. | 02-05-2015 |
| 20150316261 | FUEL COMBUSTION SYSTEM WITH A PERFORATED REACTION HOLDER - A combustion system such as a furnace or boiler includes a perforated reaction holder configured to hold a combustion reaction that produces very low oxides of nitrogen (NOx). | 11-05-2015 |
| 20160121436 | COMBUSTIBLE FLUID CUTTING SAFETY SYSTEM - Embodiments of the present invention provide components and a system for providing a safer environment for using a cutting torch. The system includes a cutting torch and a control box. There is communication from the user to the control box to allow fluids to flow to the torch. The control box includes closed biased valve(s) such that if there is a condition where there is no instruction from the troch to the control box and/or power is lost, the valves will shut, preventing fluid from flowing into the torch. | 05-05-2016 |
| 20160123588 | UNIVERSAL FURNACE CONTROLLER AND METHOD OF INSTALLING SAME - A controller for use in a gas furnace system including a gas valve and an ignition device is provided. The controller includes a circuit board, a control circuit connected to the circuit board, and a plurality of harness connectors mounted to the circuit board. The control circuit is configured to control operation of the gas valve and the ignition device. Each harness connector is configured to mate with a wiring harness to electrically connect the control circuit to at least one component of the furnace system. Each harness connector includes a plurality of pin connectors defining a pin configuration of the corresponding harness connector, and each pin configuration is different than the other pin configurations. At least one pin connector from each harness connector is electrically connected in parallel with one of the pin connectors from each of the other harness connectors. | 05-05-2016 |
