| Patents for F23N 3 - Regulating air supply or draught (1,646) |
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| 12/05/1991 | DE4117611A1 Continuous monitoring equipment for variable air floor - controls electrical motor according to air demand signal and computed efficiency |
| 10/31/1991 | WO1991016576A1 A method of regulating a gas-fired heat-generating appliance, and the relative appliance |
| 10/24/1991 | DE4112449A1 Burner regulation system providing defined flame front position - uses temp. sensor signal for controlling air supplied to burner |
| 10/01/1991 | US5052344 Incineration control apparatus for a fluidized bed boiler |
| 09/15/1991 | WO1991014136A1 Device for the inflow control of gas, steam or other fluids |
| 09/15/1991 | CA2078236A1 Device for the inflow control of gas, steam or other fluids |
| 09/12/1991 | DE4007699A1 Fuel-fired auxiliary heater for motor vehicle - has with pulse-operated blower and burner controlled by variable pulse lengths |
| 09/10/1991 | US5046943 Air throttle control for a two-stage blower burner |
| 08/06/1991 | US5037292 Heater for motor vehicle |
| 08/06/1991 | US5037291 Method and apparatus for optimizing fuel-to-air ratio in the combustible gas supply of a radiant burner |
| 07/31/1991 | CN2081943U Energy-saving burner with fume and dust removing function |
| 07/11/1991 | WO1991010068A1 Burner for motor vehicle heater |
| 07/04/1991 | DE3943193A1 Ventilator for room heated by electrically-controlled fireplace - has timing circuit prolonging admission of air for limited duration after disconnection of power from heater |
| 07/04/1991 | DE3943192A1 Time-switched chimney damper for electrically-controlled fireplace - has control circuit drawing on capacitive store of energy during transitional phase before opening of flap |
| 06/27/1991 | DE3942647A1 Brenner fuer eine kraftfahrzeug-standheizung Burner for a motor vehicle-condensation heating |
| 06/11/1991 | US5023527 Control circuits, electronically commutated motor systems and methods |
| 04/24/1991 | EP0424358A2 Heating apparatus with a flow quantity control device for the flow of combustion air |
| 04/16/1991 | US5007404 Woodstove for heated air forced into a secondary combustion chamber and method of operating same |
| 03/20/1991 | CN2073542U Pressure confining automatically wind stopping devices for boiler |
| 02/27/1991 | EP0413942A2 Heating device |
| 01/24/1991 | DE3923378A1 Reversing drive mechanism for valve operation - has shaded pole motor, cleared rack-and-pinion drive with automatic clutch and dash-pot damper |
| 01/22/1991 | US4986198 Method of controlling combustion in fluidized bed incinerator |
| 12/27/1990 | WO1990015928A1 A shape memory actuator |
| 12/25/1990 | US4979672 Shape memory actuator |
| 11/14/1990 | CN1046970A Method and automatic optimizaiton system of combustion processes in thermal objects |
| 11/07/1990 | EP0396293A2 Gas fired appliances and installations incorporating such appliances |
| 10/16/1990 | US4962749 Method of operating a natural gas furnace with propane |
| 10/03/1990 | EP0389715A2 Electronic control system for a hot air furnace |
| 09/30/1990 | CA2003235A1 Electronic control system for a gas-fired/hot air furnace with induced draft blower |
| 08/08/1990 | CN1044525A Tuyere-alternated blasting |
| 07/31/1990 | US4944673 Drier for a web of material |
| 07/11/1990 | EP0377441A1 Safety-operational surveillance of a speed-rate controlled blower for furnace air |
| 07/11/1990 | CN1008772B Process and device for control of heat energy exchanged with fluidized bed |
| 06/27/1990 | CN1008551B Control method for heater of coal-burning boiler |
| 06/13/1990 | EP0372075A1 Combustion control apparatus for fluidized bed boilers |
| 05/29/1990 | US4929173 Heating appliance with combustion air preheat |
| 05/09/1990 | EP0211913B1 Device for a fire installation |
| 04/26/1990 | DE3836346A1 Flap-controlled air feed to the installation space of a furnace |
| 03/29/1990 | DE3832011A1 Heat control on tiled stoves controlled by bimetallic thermostats |
| 03/21/1990 | EP0358760A1 Combustion control method for fluidized bed incinerator |
| 03/21/1990 | CN2054867U Multichannel pulsating air flow blocking device |
| 03/13/1990 | US4907737 Electronic control system for a gas-fired/hot air furnace with induced draft blower |
| 03/13/1990 | CA1266653A1 Apparatus and method for the flow control of flue gas to combustion air in a regenerative heating system |
| 02/27/1990 | US4903684 Heater apparatus |
| 02/01/1990 | DE3825608A1 Method for measuring and controlling the secondary air in a furnace for gas-rich solid fuels |
| 01/31/1990 | CN2052103U Air-current controller with several channels |
| 11/23/1989 | DE3915992A1 Process for the reduction of nitrogen oxides |
| 11/22/1989 | CN1037388A Method of controlling combustion in fluidized bed incinerator |
| 11/14/1989 | US4880376 Method and apparatus for monitoring and calibrating damper position |
| 11/08/1989 | CN2047338U Constant draught device of stack |
| 09/26/1989 | CA1261428A1 Flow rate control system in fluid supply and drain apparatus |
| 09/12/1989 | US4866363 Fail-safe potentiometer feedback system |
| 08/22/1989 | US4860231 Calibration technique for variable speed motors |
| 08/17/1989 | DE3903739A1 Draught-regulating device for a heating appliance |
| 08/02/1989 | EP0326227A1 A drier for a web of material |
| 07/25/1989 | US4850853 Air control system for a burner |
| 07/18/1989 | CA1257736A1 Aqueous solutions or dispersions of cationic oligourethanes, a process for the production thereof and the use thereof to produce coatings |
| 07/11/1989 | US4846400 Method of and apparatus for automatic damper control |
| 06/13/1989 | US4838481 Draft control arrangement for venting of combustion apparatus |
| 06/01/1989 | DE3839540A1 Method and apparatus for guaranteeing the condensation-free operating state of flue-gas draining systems |
| 05/10/1989 | CN2037433U Control system of honeycomb briquet stove |
| 04/20/1989 | DE3833263A1 Heating arrangement with draught-regulating device |
| 03/29/1989 | EP0308840A2 Fail-safe potentiometer feedback system |
| 01/26/1989 | WO1989000661A1 Combustion control apparatus for fluidized bed boilers |
| 01/19/1989 | DE3737025A1 Device for regulating the draught in firing equipment, in particular in gas fireplaces |
| 01/05/1989 | DE3721143A1 Verbrennungsvorrichtung, insbesondere zum erhitzen des arbeitsgases fuer einen heissgasmotor Combustion device, particularly for heating the working gases for a hot gas engine |
| 12/28/1988 | EP0297086A1 Combustion air supply regulating device for a stove |
| 11/23/1988 | CN87102023A Movable regulating furnace arch |
| 11/15/1988 | US4784580 Airflow control system |
| 11/03/1988 | WO1988008504A1 Combustion control method for fluidized bed incinerator |
| 11/01/1988 | US4781575 Temperature compensator for pressure operated fuel regulator |
| 10/25/1988 | US4779795 Convector room heater incorporating a hot water boiler |
| 09/13/1988 | US4770340 Boiler air flow controlling apparatus |
| 09/13/1988 | US4770108 Two-way vent cap for controlled atmosphere furnace |
| 09/08/1988 | DE3705153A1 Firing stove |
| 07/12/1988 | US4756688 Apparatus and method for the flow control of flue gas to combustion air in a regenerative heating system |
| 06/21/1988 | CA1238302A1 Air flow compensator for pressure operated fuel regulator |
| 05/24/1988 | US4746492 Apparatus for the control of heat energy exchanged with a fluidized bed |
| 04/20/1988 | CN85100209B Shaped coal heating booster |
| 04/06/1988 | CN87204207U Regulatable furnace arch |
| 03/29/1988 | CA1234612A1 Differential pressure control apparatus |
| 01/19/1988 | US4720245 Flow rate control system in fluid supply and drain apparatus |
| 12/16/1987 | EP0249304A2 Apparatus and method for the flow control of flue gas to combustion air ratio in a regenerative heating system |
| 12/08/1987 | US4711626 Damper mounting assembly |
| 12/03/1987 | DE3716641A1 Brennervorrichtung Burner device |
| 10/29/1987 | DE3612712A1 Process for temperature regulation and thermostat for carrying it out |
| 06/24/1987 | EP0225996A1 Flow rate control system in fluid supply and drain apparatus |
| 04/29/1987 | CN85205854U Automatic energy-saving device for honeycomb briquet stove |
| 04/23/1987 | DE3617510A1 Boiler installation with an air throttle flap |
| 04/22/1987 | EP0218720A1 Method and device for controlling a fresh air valve |
| 04/16/1987 | DE3536782A1 Combustion installation for solids |
| 04/15/1987 | EP0218017A1 Electronically commutated motors |
| 03/31/1987 | US4654566 Control system, method of operating an electronically commutated motor, and laundering apparatus |
| 03/04/1987 | EP0211913A1 Device for a fire installation. |
| 03/03/1987 | US4646962 Rotational means for automatic damper means |
| 02/25/1987 | EP0211762A1 Process and apparatus for regulating the thermal energy exchanged with a fluidized bed |
| 02/04/1987 | CN86105633A Process and device for the control of heat energy exchanged with a fluidized bed |
| 01/27/1987 | CA1217260A1 Airflow control system |
| 01/22/1987 | DE3525762A1 Gas heating device |
| 01/10/1987 | CN85101357A Control method for heater of coal-burning boiler |