WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F23N　REGULATING OR CONTROLLING COMBUSTION (control devices specially adapted for fluidised-bed combustion apparatus F23C 10/28; condition reponsive controls for regulating combustion in domestic stoves with open fires for solid fuel F24B 1/187)

F23N 1/00 Regulating fuel supply

F23N 1/002 ・{using electronic means (F23N 1/04 to F23N 1/10 take precedence)}

F23N 1/005 ・{using electrical or electromechanical means (F23N 1/04 to F23N 1/10 take precedence)}

F23N 1/007 ・{using mechanical means (F23N 1/04 to F23N 1/10 take precedence)}

F23N 1/02 ・conjointly with air supply

F23N 1/022 ・・{using electronic means}

F23N 1/025 ・・{using electrical or electromechanical means}

F23N 1/027 ・・{using mechanical means}

F23N 1/04 ・conjointly with air supply and with draught

F23N 1/042 ・・{using electronic means}

F23N 1/045 ・・{using electrical or electromechanical means}

F23N 1/047 ・・{using mechanical means}

F23N 1/06 ・conjointly with draught

F23N 1/062 ・・{using electronic means}

F23N 1/065 ・・{using electrical or electromechanical means}

F23N 1/067 ・・{using mechanical means}

F23N 1/08 ・conjointly with another medium, e.g. boiler water

F23N 1/082 ・・{using electronic means}

F23N 1/085 ・・{using electrical or electromechanical means}

F23N 1/087 ・・{using mechanical means}

F23N 1/10 ・・and with air supply or draught

F23N 1/102 ・・・{using electronic means}

F23N 1/105 ・・・{using electrical or electromechanical means}

F23N 1/107 ・・・{using mechanical means}

F23N 3/00 Regulating air supply or draught (conjointly with fuel supply F23N 1/00)

F23N 3/002 ・{using electronic means (F23N 3/02 to F23N 3/08 take precedence)}

F23N 3/005 ・{using electrical or electromechanical means (F23N 3/02 to F23N 3/08 take precedence)}

F23N 3/007 ・{using mechanical means (F23N 3/02 to F23N 3/08 take precedence)}

F23N 3/02 ・Regulating draught by direct pressure operation of single valves or dampers

F23N 3/04 ・by operation of single valves or dampers by temperature sensitive elements

F23N 3/042 ・・{using electronic means}

F23N 3/045 ・・{using electrical or electromechanical means}

F23N 3/047 ・・{using mechanical means}

F23N 3/06 ・by conjoint operation of two or more valves or dampers (F23N 3/08 takes precedence)

F23N 3/065 ・・{using mechanical means}

F23N 3/08 ・by power-assisted systems

F23N 3/082 ・・{using electronic means}

F23N 3/085 ・・{using electrical or electromechanical means}

F23N 3/087 ・・{using mechanical means}

F23N 5/00 Systems for controlling combustion (F23N 1/00, F23N 3/00 take precedence)

F23N 5/003 ・{using detectors sensitive to combustion gas properties (F23N 5/02, F23N 5/18 to F23N 5/26 take precedence)}

F23N 5/006 ・・{the detector being sensitive to oxygen}

F23N 5/02 ・using devices responsive to thermal changes or to thermal expansion of a medium

F23N 5/022 ・・{using electronic means (F23N 5/04 to F23N 5/14 take precedence)}

F23N 5/025 ・・{using electrical or electromechanical means (F23N 5/04 to F23N 5/14 take precedence)}

F23N 5/027 ・・{using mechanical means (F23N 5/04 to F23N 5/14 take precedence)}

F23N 5/04 ・・using bimetallic elements

F23N 5/042 ・・・{using electronic means}

F23N 5/045 ・・・{using electrical or electromechanical means}

F23N 5/047 ・・・[N. using mechanical means]

F23N 5/06 ・・using bellows; using diaphragms

F23N 5/062 ・・・{using electronic means}

F23N 5/065 ・・・{using electrical or electromechanical means}

F23N 5/067 ・・・{using mechanical means}

F23N 5/08 ・・using light-sensitive elements

F23N 5/082 ・・・{using electronic means}

F23N 5/085 ・・・{using electrical or electromechanical means}

F23N 5/087 ・・・{using mechanical means}

F23N 5/10 ・・using thermocouples

F23N 5/102 ・・・{using electronic means}

F23N 5/105 ・・・{using electrical or electromechanical means}

F23N 5/107 ・・・{using mechanical means e.g. safety valves}

F23N 5/12 ・・using ionisation-sensitive elements, i.e. flame rods {(testing of other ignition means, e.g. flame F02P 17/12; analysing gases by investigating the ionisation by using heat G01N 27/626)}

F23N 5/123 ・・・{using electronic means}

F23N 5/126 ・・・[N. using electrical or electromechanical means]

F23N 5/14 ・・using thermo-sensitive resistors

F23N 5/143 ・・・{using electronic means}

F23N 5/146 ・・・{using electrical or electromechanical means}

F23N 5/16 ・using noise-sensitive detectors

F23N 5/18 ・using detectors sensitive to rate of flow of air or fuel

F23N 5/184 ・・{using electronic means}

F23N 5/187 ・・{using electrical or electromechanical means}

F23N 5/188 ・・{using mechanical means}

F23N 5/20 ・with a time programme acting through electrical means, e.g. using time-delay relays

F23N 5/203 ・・{using electronic means}

F23N 5/206 ・・{using electrical or electromechanical means}

F23N 5/22 ・with a time programme acting through mechanical means, e.g. using cams

F23N 5/24 ・Preventing development of abnormal or undesired conditions, i.e. safety arrangements (F23N 5/02 to F23N 5/18 take precedence)

F23N 5/242 ・・{using electronic means}

F23N 5/245 ・・{using electrical or electromechanical means}

F23N 5/247 ・・{using mechanical means}

F23N 5/26 ・Details

F23N 5/265 ・・{using electronic means}

F23N 2005/00 Systems for controlling combustion (F23N 1/00, F23N 3/00 take precedence)

F23N 2005/16 ・using noise-sensitive detectors

F23N 2005/165 ・・with ultrasonic means

F23N 2005/18 ・using detectors sensitive to rate of flow of air or fuel

F23N 2005/181 ・・using detectors sensitive to rate of flow of air

F23N 2005/182 ・・・Air flow switch

F23N 2005/185 ・・using detectors sensitive to rate of flow of fuel

F23N 2021/00 Pretreatment or prehandling

F23N 2021/02 ・using belt conveyers

F23N 2021/04 ・Preheating liquid fuel

F23N 2021/06 ・Preheating gaseous fuel

F23N 2021/08 ・Preheating the air

F23N 2021/10 ・Analysing fuel properties, e.g. density, calorific

F23N 2021/12 ・Recycling exhaust gases

F23N 2023/00 Signal processing; Details thereof

F23N 2023/02 ・Multiplex transmission

F23N 2023/04 ・Memory

F23N 2023/06 ・Sampling

F23N 2023/08 ・Microprocessor; Microcomputer

F23N 2023/10 ・Correlation

F23N 2023/12 ・Integration

F23N 2023/14 ・Differentiation

F23N 2023/16 ・Measuring bridge

F23N 2023/18 ・Chopper

F23N 2023/20 ・Opto-coupler

F23N 2023/22 ・Timing network

F23N 2023/24 ・・with bimetallic elements

F23N 2023/26 ・・with capacitors

F23N 2023/28 ・・with more than one timing element

F23N 2023/30 ・Switches

F23N 2023/32 ・・Reed switches

F23N 2023/34 ・with feedforward processing

F23N 2023/36 ・PID signal processing

F23N 2023/38 ・Remote control

F23N 2023/40 ・Simulation

F23N 2023/42 ・Function generator

F23N 2023/44 ・Optimum control

F23N 2023/46 ・Identification

F23N 2023/48 ・Learning / Adaptive control

F23N 2023/50 ・Human control

F23N 2023/52 ・Fuzzy logic

F23N 2023/54 ・Recording

F23N 2025/00 Measuring

F23N 2025/02 ・filling height in burners

F23N 2025/04 ・pressure

F23N 2025/06 ・・for determining flow

F23N 2025/08 ・temperature

F23N 2025/10 ・・stack temperature

F23N 2025/12 ・・room temperature

F23N 2025/13 ・・outdoor temperature

F23N 2025/14 ・・Ambient temperature around burners

F23N 2025/16 ・・burner temperature

F23N 2025/18 ・・feedwater temperature

F23N 2025/19 ・・outlet temperature water heat-exchanger

F23N 2025/20 ・・entrant temperature

F23N 2025/21 ・・outlet temperature

F23N 2025/22 ・heat losses

F23N 2025/24 ・・indicated in an amount of money

F23N 2025/26 ・humidity

F23N 2025/30 ・・measuring lambda

F23N 2027/00 Ingnition or checking

F23N 2027/02 ・Starting or ignition cycles

F23N 2027/04 ・Prepurge

F23N 2027/06 ・Postpurge

F23N 2027/08 ・Hold fire apparatus

F23N 2027/10 ・Sequential burner running

F23N 2027/12 ・Burner simulation or checking

F23N 2027/14 ・・Flame simulation

F23N 2027/16 ・・Checking components, e.g. electronic

F23N 2027/18 ・Applying test signals, e.g. periodic

F23N 2027/20 ・Calibrating devices

F23N 2027/22 ・Pilot burners (ignition circuits therefor F23N 2027/32)

F23N 2027/24 ・・the pilot burner not burning continuously

F23N 2027/26 ・・comprising two or more distinct pilot burners

F23N 2027/28 ・Ignition circuits

F23N 2027/30 ・・for pilot burners

F23N 2027/32 ・Igniting for a predetermined number of cycles

F23N 2027/34 ・Continuously applied ignition cycles

F23N 2027/36 ・Spark ignition, e.g. by means of a high voltage

F23N 2027/38 ・Electrical resistance ignition

F23N 2027/40 ・Catalytic ignition

F23N 2027/42 ・Ceramic glow ignition

F23N 2029/00 Flame sensors

F23N 2029/02 ・Pilot flame sensors

F23N 2029/04 ・sensitive to the colour of flames

F23N 2029/06 ・with periodical shutters; Modulation signals

F23N 2029/08 ・detecting flame flicker

F23N 2029/10 ・comprising application of periodical fuel flow fluctuations

F23N 2029/12 ・with flame rectification current detecting means

F23N 2029/14 ・using two or more different types of flame sensor

F23N 2029/16 ・using two or more of the same types of flame sensor

F23N 2029/18 ・Flame sensor cooling means

F23N 2029/20 ・Camera viewing

F23N 2029/22 ・the sensor`s sensivity being variable

F23N 2031/00 Fail safe

F23N 2031/02 ・using electric energy accumulators

F23N 2031/04 ・for electrical power failures

F23N 2031/06 ・for flame failures

F23N 2031/08 ・・for pilot flame failures

F23N 2031/10 ・for component failures

F23N 2031/12 ・for ignition failures

F23N 2031/14 ・for earthquakes

F23N 2031/16 ・using melting materials or shape memory alloys

F23N 2031/18 ・Detecting fluid leaks

F23N 2031/20 ・Warning devices

F23N 2031/22 ・・using warning lamps

F23N 2031/24 ・Freezing

F23N 2031/26 ・for clogging air inlet

F23N 2031/28 ・preventing flash-back or blow-back

F23N 2031/30 ・Representation of working time

F23N 2033/00 Ventilators

F23N 2033/02 ・in stacks

F23N 2033/04 ・・with variable speed

F23N 2033/06 ・at the air intake

F23N 2033/08 ・・with variable speed

F23N 2033/10 ・forcing air through heat exchangers

F23N 2035/00 Valves, nozzles or pumps

F23N 2035/02 ・Air or combustion gas valves or dampers

F23N 2035/04 ・・in stacks

F23N 2035/06 ・・at the air intake

F23N 2035/08 ・・used with heat exchanges

F23N 2035/10 ・・power assisted, e.g. using electric motors

F23N 2035/12 ・Fuel valves

F23N 2035/14 ・・electromagnetically operated

F23N 2035/16 ・・variable flow or proportional valves

F23N 2035/18 ・・Groups of two or more valves

F23N 2035/20 ・・Membrane valves

F23N 2035/22 ・・cooperating with magnets

F23N 2035/24 ・・Valve details

F23N 2035/26 ・Fuel nozzles

F23N 2035/28 ・・Spray fuel nozzles

F23N 2035/30 ・Pumps

F23N 2037/00 Controlling (F23N 5/00 takes precedence)

F23N 2037/02 ・two or more burners

F23N 2037/04 ・at two or more different localities

F23N 2037/06 ・two predeterming temperatures, e.g. day-night

F23N 2037/08 ・two or more different types of fuel simultaneously

F23N 2037/10 ・High or low fire

F23N 2037/12 ・catalytic burners

F23N 2037/14 ・burners with gasification or vaporizer elements

F23N 2037/16 ・secondary air

F23N 2037/18 ・fluidized bed burners

F23N 2037/20 ・one or more bypass conduits

F23N 2037/22 ・water injection

F23N 2037/24 ・height of burner

F23N 2037/26 ・・oxygen-air ratio

F23N 2037/28 ・・oxygen as pure oxydant

F23N 2037/30 ・・matrix burners

F23N 2037/32 ・・Nox

F23N 2039/00 Fuels

F23N 2039/02 ・Solid fuels

F23N 2039/04 ・Gaseous fuels

F23N 2039/06 ・Liquid fuels

F23N 2041/00 Applications

F23N 2041/02 ・Space-heating

F23N 2041/04 ・Heating water

F23N 2041/06 ・Space-heating and heating water

F23N 2041/08 ・Household apparatus

F23N 2041/10 ・Generating vapour

F23N 2041/11 ・Torches

F23N 2041/12 ・Stack-torches

F23N 2041/14 ・Vehicle heating, the heat being derived otherwise than from the propulsion plant

F23N 2041/16 ・Spectrometer burners

F23N 2041/18 ・Incinerating apparatus

F23N 2041/20 ・Gas turbines

F23N 2041/22 ・Absorption refrigerator

F23N 2900/00 Special features of, or arrangements for controlling combustion

F23N 2900/01001 ・Micro Electro Mechanical Systems (MEMS) for controlling fuel supply to burners

F23N 2900/01002 ・Electromagnetically operated fuel valves with a single solenoid controlling two or more cores

F23N 2900/05001 ・Measuring CO content in flue gas

F23N 2900/05002 ・Measuring CO2 content in flue gas

F23N 2900/05003 ・Measuring NOx content in flue gas

F23N 2900/05004 ・Details of components, e.g. connecting adaptors

F23N 2900/05005 ・Mounting arrangements for sensing, detecting or measuring devices

F23N 2900/05006 ・Controlling systems using neuronal networks

F23N 2900/05101 ・Connections between thermocouple and magnetic valves, e.g. by plug and socket connectors

F23N 2900/05181 ・Controlling air to fuel ratio by using a single differential pressure detector