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| 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 |
| 7380588 | Heat pump control system and method of operating to provide automatic backup heating modes A heat pump type heating and air conditioning system includes a gas furnace or other auxiliary heat source and a thermostat and controller associated with the heat pump and the auxiliary heat source for automatically energizing the heat pump if the auxiliary heat so... | 06/03/2008 |
| 7344373 | Control method for gas burners The invention relates to a control method for gas burners for providing a gas-air mixture. According to the invention, the ionization signal is only used for setting the mixing ratio dependent on the gas quality when the burner flame completely sweeps over th... | 03/18/2008 |
| 7314370 | Automated operation check for standing valve A method of verifying proper operation of an electromagnetic valve. The method includes providing a mechanism to effect opening of the valve, verifying that the valve opened as a result of employing the mechanism to effect opening of the valve and after verifying th... | 01/01/2008 |
| 7090486 | Control device for a burner and adjusting method The invention relates to a control system (15) for a burner and a setting-up procedure. The control system (15) controls the air ratio for combustion using the ionisation electrode (16). For calibration, a change is carried out in a first parame... | 08/15/2006 |
| 7046154 | Flame-monitoring device The invention relates to a flame-monitoring device in which an a.c. input voltage (U1) is limited to a voltage limit (U2) by means of a voltage limiter (4). Said voltage limit (U2) is applied to a flame sensing device (7) which ope... | 05/16/2006 |
| 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 |
| 7008217 | Safety device for boiler comprising a time delay protected by an electronic circuit A safety device for an industrial boiler (CHA) including electromechanical relays (REn, RS), which are connected in series in order to form an electromechanical safety chain (CH1), and at least one shunt relay (RTn) which is normally ope... | 03/07/2006 |
| 6953335 | Method and apparatus for reducing nitrogen dioxide (NO2) emissions in a flueless heating appliance An apparatus for reducing nitrogen dioxide emissions in a flueless heating appliance or heater includes a heat-exchanger for exchanging heat contained in fumes produced by the combustion of a fuel in the heating appliance. A heating appliance or heater without a fum... | 10/11/2005 |
| 6923640 | Flame burner ignition system An ignition system includes a burner, a power supply, an electrical system including a ground conductor, and an ignition module. The ignition module includes a first input, a second input, and an output. The output is operatively coupled to the burner, while one of ... | 08/02/2005 |
| 6887069 | Real-time combustion controls and diagnostics sensors (CCADS) The present invention is directed to an apparatus for the monitoring of the combustion process within a combustion system. The apparatus comprises; a combustion system, a means for supplying fuel and an oxidizer, a device for igniting the fuel and oxidizer in order ... | 05/03/2005 |
| 6783355 | Method for operating a gas burner According to the invention, the ionization signal is detected at a first point of time during full-load operation and during partial-load operation, and for this first point of time a first difference is formed between the ionization signal during full-load operatio... | 08/31/2004 |
| 6676404 | Measuring device for a flame A flame measuring device, in particular for use in a regulating device for a burner, includes an ionization electrode which is arranged in a flame region of the burner. An ac voltage is applied to the ionization electrode whereby a dc voltage component is... | 01/13/2004 |
| 6537059 | Regulating device for a burner A regulating device for a burner regulates the air-gas ratio by way of an ionization electrode. In the event of dynamic changes in output preliminary control is implemented in accordance with the invention with two or more stored characteristics.... | 03/25/2003 |
| 6527541 | Regulating device for an air ratio-regulated burner During start-up a regulating device monitors the quality of the air ratio control in respect of time in accordance with the invention in that it observes the difference of a signal and comparison signal.... | 03/04/2003 |
| 6509838 | Constant current flame ionization circuit In a flame ionization sensor type gas combustion control apparatus, the sensor is provided with a power supply which will increase the voltage as contamination build up occurs on the in-flame sensor electrode thereby keeping a constant sensor current and ... | 01/21/2003 |
| 6299433 | Burner control A method and apparatus for controlling the operation of a burner apparatus are provided via the flame intensity of combustion reaction mixtures of oxidant and fuel gas.... | 10/09/2001 |
| 6244857 | Method and apparatus for optical flame control of combustion burners In accordance with the present invention, methods and apparatus to control the combustion of a burner are presented which overcome many of the problems of the prior art. One aspect of the invention comprises a burner control apparatus including a device f... | 06/12/2001 |
| 6129542 | Dual mode pilot burner A dual mode pilot burner having a control flame mode of operation and a pilot flame mode of operation, which dual mode pilot burner is suitable for controlling the fuel/air ratio of a main burner when operating in the control flame mode of operation. The ... | 10/10/2000 |
| 6045353 | Method and apparatus for optical flame control of combustion burners In accordance with the present invention, methods and apparatus to control the combustion of a burner are presented which overcome many of the problems of the prior art. One aspect of the invention comprises a burner control apparatus including a device f... | 04/04/2000 |
| 6033211 | Emitter apparatus An apparatus for drying a moving substrate containing a multiplicity of infrared emitters and a detection emitter and a device for supplying a mixture of air and gas to these emitters. The detection emitter contains an emitter body with a diffuser for dis... | 03/07/2000 |
| 5971745 | Flame ionization control apparatus and method An apparatus and process for controlling the operation of a gas burner, by monitoring and controlling the stoichiometry of the air and fuel gas during the burning process.... | 10/26/1999 |
| 5969617 | Flame ionization detector A flame ionization detector having a pair of spaced electrodes to which a DC voltage is applied and a flame produced between the electrodes by burning a gas whose composition is to be determined, thereby ions are produced which form an ion current between... | 10/19/1999 |
| 5941236 | Roofing kettle control apparatus Roofing kettle apparatus for heating asphalt includes a wheeled chassis mounting a vat and a heating system for heating the vat. The heating system includes a solenoid operated valve for controlling the flow of fuel gas from a fuel gas source to each of a... | 08/24/1999 |
| 5938424 | Failure diagnosing apparatus for combustion systems An apparatus 9 for diagnosing failures in the combustion system to be installed in the regenerator of an absorption chiller is adapted to automatically prepare quantitative diagnosis data from a plurality of items of measurement data. The apparatus compri... | 08/17/1999 |
| 5924859 | Process and circuit for controlling a gas burner A process for controlling a gas blower burner in which an ionization electrode sends an electrical variable derived from the combustion temperature or the lambda value to a control circuit, which compares this variable with a selected electrical set point... | 07/20/1999 |
| 5902099 | Combined fan and ignition control with selected condition sensing apparatus An electric control is shown adapted for use with gas furnaces which controls fan motors, ignition controls and a gas valve based on inputs from a room thermostat, limit switches, a flame probe, a flame roll-out probe, and a condensate sensor. A roll-out ... | 05/11/1999 |
| 5899683 | Process and device for operating a gas burner In a process for operating a gas blower burner, a control circuit detects an ionization signal Ui derived from an ionization electrode, and it adjusts the gas-to-air ratio to a lambda set point >1, to which a set point Uis of the ionization signal corresp... | 05/04/1999 |
| 5829962 | Method and apparatus for optical flame control of combustion burners In accordance with the present invention, methods and apparatus to control or monitor the combustion of a burner are presented which overcome many of the problems of the prior art. One aspect of the invention comprises a burner control apparatus comprisin... | 11/03/1998 |
| 5813394 | Cooking grill with moisture-insensitive flame detector The cooking grill has a moisture-insensitive flame detector capable of accurately determining the presence or absence of flame in the presence of moisture disposed adjacent to the burner. It also provides a more reliable ignition device and will relight t... | 09/29/1998 |
| 5775895 | Combustion-state detecting circuit of combustion apparatus There is disclosed a combustion-state detecting circuit of a combustion apparatus installed in a combustion chamber, including: a flame detector that has a heat-emitting device for emitting heat on application of an alternating current signal, and produce... | 07/07/1998 |
| 5722822 | Flame sensor verification Method and apparatus are disclosed for checking the responsiveness of a circuit which senses the presence of a flame produced by a burner within a furnace. A programmed processor associated with the circuit measures the time the circuit takes to indicate ... | 03/03/1998 |
| 5720604 | Flame detection system A flame sensor senses the intensity of a pilot flame to determine whether main burner ignition has occurred in a gas furnace. The sensor includes a computer which is operative to trigger the sensing of the flame intensity following the provision of gas to... | 02/24/1998 |
| 5599180 | Circuit arrangement for flame detection A circuit arrangement for flame detection for a transistor coil ignition system of a burner is disclosed. The transistor coil ignition system features a trigger stage which triggers a power transistor that is located in the power circuit of the primary wi... | 02/04/1997 |
| 5506569 | Self-diagnostic flame rectification sensing circuit and method therefor An electric control is shown for gas furnaces which controls fan motors and ignition controls based on inputs from a room thermostat (32), a high limit control and an ignition control (14) including a gas valve. A flame sense circuit (42, 42') is coupled ... | 04/09/1996 |
| 5472337 | Method and apparatus to detect a flame An apparatus and method to qualify the condition of a flame body is disclosed, where such apparatus comprises a power source, an amplifier and sensor means, where said sensor means includes two or more probes disposed in spaced apart relation so as to con... | 12/05/1995 |
| 5472336 | Flame rectification sensor employing pulsed excitation A flame rectification type flame sensor circuit and method in which a generator injects periodic pulses of alternating voltage into a flame region, the voltage across the flame region being processed by a filter/amplifier which, in proper operation, produ... | 12/05/1995 |
| 5439374 | Multi-level flame curent sensing circuit A circuit for producing signals representative of at least two flame current levels is disclosed herein. The circuit includes two electrodes locatable in a flame, where a voltage potential is set up between the electrodes, and the current flow is measured... | 08/08/1995 |
| 5299931 | Barbecue stove with easily operating charcoal-accessible grill A barbecue stove includes a grill having transverse grill rods and longitudinal grill rods mounted on a rim placed on an upper portion of a stove body for barbecuing use, and a slide grating member slidably engageable with the grill rods normally shieldin... | 04/05/1994 |
| 5256057 | Fuel control circuit A multi-stage, fail-safe fuel control circuit monitors a flame which emits photons and is supplied with fuel through a valve to a burner. The fuel control circuit includes a flame scanner adjacent the valve for generating a count signal including pulses p... | 10/26/1993 |
