| Patents for F23N 5 - Systems for controlling combustion (9,434) |
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| 07/10/1991 | CN1052936A Gas shutoff apparatus |
| 07/04/1991 | DE4025909A1 Optical flame monitor in high-temp. reactor - employs wavelength filtering for evaluation of low- and high-pressure flames and dual-wavelength temp. pyrometry |
| 07/04/1991 | DE4025852A1 Combined igniter and flame monitor for industrial furnaces - has bundle of optical fibres surrounding electrical feed to spark gap in mouth of reaction chamber |
| 07/03/1991 | CN2080142U Automatic control of gas stove |
| 07/03/1991 | CN2080136U Optimum control device for boiler |
| 07/02/1991 | US5027789 Fan control arrangement for a two stage furnace |
| 06/26/1991 | EP0433528A1 Control device with two flow controlled outlets |
| 06/26/1991 | CN1012991B Heating stove with pyrolysis gasifier |
| 06/25/1991 | US5026272 Combustion control device |
| 06/25/1991 | US5026270 Microcontroller and system for controlling trial times in a furnace system |
| 06/19/1991 | EP0433215A1 Method and apparatus for controlling the hotwater circulation in a gas fired waterheater |
| 06/18/1991 | US5024595 Furnace protective device |
| 06/18/1991 | US5024055 Device for detecting combustion conditions in combustors |
| 06/13/1991 | DE4028922A1 Combustion process monitoring method - detecting changes in radiation spectrum intensity and interpreting results |
| 06/11/1991 | US5023816 Method and apparatus for conditioning AC input signals |
| 06/06/1991 | DE4038640A1 Combustion processes monitoring system - uses relationship between soot particle density and ion concn. in exhaust gases to control air-fuel ratio |
| 06/04/1991 | US5020988 Intermittent pilot type burner control with a single control relay |
| 06/04/1991 | US5020479 Watertube boiler and its method of combustion |
| 06/04/1991 | US5020451 Fluidized-bed combustion furnace |
| 06/04/1991 | CA1284580C Smokeless pyrolysis furnace with single thermocouple, and ramp and soak temperature control system |
| 05/29/1991 | EP0429359A1 Radiant burner with automatic shut-off in case of flashback |
| 05/29/1991 | EP0429034A2 Method for controlling a heater |
| 05/29/1991 | EP0197147B1 Apparatus for shutting off gas |
| 05/28/1991 | US5018964 Remote-controlled gas barbeque igniting system |
| 05/28/1991 | CA1284527C Self-energizing burner control system for a fuel burner |
| 05/22/1991 | EP0428373A2 Acoustical burner control system and method |
| 05/16/1991 | WO1991006809A1 Microbridge-based combustion control |
| 05/16/1991 | WO1991006808A1 Process for monitoring the operation of flueless heaters, especially paraffin heaters, and keeping it safe, and device for implementing the process |
| 05/16/1991 | CA2072122A1 Microbridge-based combustion control |
| 05/14/1991 | US5015172 Method and apparatus for detecting short circuited combustion air switches |
| 05/14/1991 | US5014680 Self-powered automatic secondary air controllers for woodstoves and small furnaces |
| 05/14/1991 | CA1284194C Economical dispatching arrangement for a boiler system having a cogenerative capability |
| 05/11/1991 | CA2029317A1 Flame detection |
| 05/07/1991 | WO1991006918A1 Preemptive constraint control |
| 05/02/1991 | EP0424839A2 Safety circuit for gas- or oil burners |
| 05/02/1991 | EP0424597A1 Method for supervising and stopping the working of stoves in a safe manner, especially paraffin stoves and device for carrying out this method |
| 04/30/1991 | US5010827 Apparatus for detecting carryover particles in the interior of a furnace |
| 04/24/1991 | EP0424169A2 Method of stopping combustion in restrained combustion furnace in safety and combustion stop system therefor |
| 04/24/1991 | CN2075749U Fire layer monitoring and controlling device for gas producing furnace |
| 04/23/1991 | US5010322 Housing for a process controller |
| 04/23/1991 | US5009588 Time-delay circuit for automatic shutdown of furnace systems |
| 04/17/1991 | EP0422835A2 Flame safeguard control anti-swap feature |
| 04/16/1991 | US5007404 Woodstove for heated air forced into a secondary combustion chamber and method of operating same |
| 04/10/1991 | EP0421820A2 Fluidized-bed combustion furnace |
| 04/10/1991 | EP0421550A1 Method for the accomodation of a control system for a heating installation with a burner, and a control system for such an installation |
| 04/10/1991 | EP0421251A2 Method for measuring the efficiency of a combustion and an apparatus for carrying out the method |
| 04/06/1991 | CA2026927A1 Fluidized-bed combustion furnace |
| 04/02/1991 | US5003960 For tracheal intubation |
| 04/02/1991 | US5003931 Method of and device for maintaining a parameter constant in a fluidized-bed furnace |
| 03/27/1991 | EP0419365A1 Device for injecting sludge into an incinerator |
| 03/26/1991 | US5003161 Combination of an igniter for a gas furnace and a control unit therefor |
| 03/26/1991 | US5002484 Method and system for flue gas recirculation |
| 03/22/1991 | WO1991004445A1 Device for injecting sludge into an incinerator |
| 03/22/1991 | CA2042023A1 Incinerator mud injection device |
| 03/21/1991 | WO1991003686A1 Method of studying pressure combustion processes of stoichiometrically burning hydrogen/oxygen under high pressures |
| 03/20/1991 | CN2073557U Timing valve for closing lpg |
| 03/14/1991 | DE3930231A1 Verfahren zur direkten beobachtung von druckverbrennungsvorgaengen in der tiefsee zur brennstrahl-simulation von stoechiometrisch verbrennendem wasserstoff/sauerstoff in unter hohem druck stehender gesteinsschmelze Method for the direct observation of druckverbrennungsvorgaengen in the deep sea for burning jet simulation of stoichiometric hydrogen-burning / oxygen under high pressure into rock melt |
| 03/12/1991 | US4999792 Method and apparatus for automatic fuel changeover |
| 03/12/1991 | US4998878 Fuel control system for a burner |
| 03/12/1991 | US4998877 Blower burner |
| 03/07/1991 | DE4027984A1 Gas flow control for multiple burners |
| 03/05/1991 | US4997361 Hot surface direct ignition system for gas furnaces |
| 02/26/1991 | US4995415 Partially flooded gas appliance safety shut-off method and apparatus |
| 02/23/1991 | CA2023433A1 Double-combustor type pulsating combustion apparatus |
| 02/20/1991 | EP0413104A1 Method of controlling combustion in a furnace |
| 02/19/1991 | US4994959 Fuel burner apparatus and a method of control |
| 02/19/1991 | US4993222 Method for burning gaseous fuel, wherein fuel composition varies |
| 02/14/1991 | CA2016813A1 Unit for supplying combustion air to a furnace |
| 02/13/1991 | EP0412244A1 Process and apparatus for controlling the temperature of a boiler |
| 02/13/1991 | CN2071307U Safety automatic turn-off device of gas stove |
| 02/12/1991 | US4992040 For an electric burner |
| 02/05/1991 | US4989523 Method and apparatus for extracting heat from a combustible material |
| 01/31/1991 | DE4025808A1 Producer gas reactor monitoring for partial fuel oxidn. - involves photoelectric conversion of four portions of flame spectrum with equal information contents for process control |
| 01/29/1991 | CA1279715C Gas shutoff apparatus |
| 01/24/1991 | WO1991000978A1 Furnace control device |
| 01/24/1991 | DE3924075A1 Sintering furnace for raw material treatment - has continuously moving belt and burner assembly |
| 01/24/1991 | DE3924074A1 Handling of raw materials - involves continuous sintering furnace with carefully controlled combustion to burn off organic material |
| 01/23/1991 | EP0409790A1 Combustion installation |
| 01/23/1991 | EP0409225A2 Device for the thermal treatment of material consisting of thermally degradable and thermally stable substances |
| 01/23/1991 | EP0408846A1 Method for automatic adjustment of gas and oxygen or air mixtures in heating-or cutting torches |
| 01/23/1991 | EP0408755A1 Method and device for optoelectronic control of oxygen cutting |
| 01/22/1991 | US4986468 Test circuit for system monitoring apparatus |
| 01/22/1991 | US4986198 Method of controlling combustion in fluidized bed incinerator |
| 01/15/1991 | US4984981 Heater with flame powered logic supply circuit |
| 01/15/1991 | US4984736 Heater for motor vehicles which can be operated on several power settings |
| 01/15/1991 | US4984524 Technique for controlling the combustion of fuel having fluctuating thermal values |
| 01/09/1991 | CN2069082U Automatic and timing cut-off device for gases fuel |
| 01/08/1991 | US4983853 Method and apparatus for detecting flame |
| 01/08/1991 | US4982721 A Plenum, a gas burner |
| 01/03/1991 | CA2014340A1 Integral pilot burner-generator |
| 01/01/1991 | US4981262 Unit for supplying combustion air to a furnace |
| 01/01/1991 | US4981088 Slag eliminator for furnace viewing system |
| 01/01/1991 | US4981087 Method for regulating the furnace output in incineration plants |
| 12/19/1990 | CN2067796U Time controller for gas range |
| 12/18/1990 | US4978821 Reverse flow prevention device for combustion apparatus |
| 12/18/1990 | US4978292 Fuel burner control system with hot surface ignition |
| 12/13/1990 | WO1990015284A1 Gas distribution system for a dwelling |
| 12/11/1990 | US4976605 Hot surface ignition system for a gas furnace, control device therefor and methods of making the same |
| 12/11/1990 | US4976459 Warmup method for a two stage furnace |
| 12/04/1990 | US4975043 Burner control device, system and method of making the same |