F23N

REGULATING OR CONTROLLING COMBUSTION control devices specially adapted for combustion apparatus in which combustion takes place in a fluidised bed of fuel or other particles F23C10/28; condition responsive controls for regulating combustion in domestic stoves with open fires for solid fuel F24B1/187

F23N1/00

Regulating fuel supply

F23N1/002

using electronic means F23N1/04 - F23N1/10 take precedence

F23N1/005

using electrical or electromechanical means F23N1/04 - F23N1/10 take precedence

F23N1/007

using mechanical means F23N1/04 - F23N1/10 take precedence

F23N1/02

conjointly with air supply

F23N1/022

using electronic means

F23N1/025

using electrical or electromechanical means

F23N1/027

using mechanical means

F23N1/04

conjointly with air supply and with draught

F23N1/042

using electronic means

F23N1/045

using electrical or electromechanical means

F23N1/047

using mechanical means

F23N1/06

conjointly with draught

F23N1/062

using electronic means

F23N1/065

using electrical or electromechanical means

F23N1/067

using mechanical means

F23N1/08

conjointly with another medium, e.g. boiler water

F23N1/082

using electronic means

F23N1/085

using electrical or electromechanical means

F23N1/087

using mechanical means

F23N1/10

and with air supply or draught

F23N1/102

using electronic means

F23N1/105

using electrical or electromechanical means

F23N1/107

using mechanical means

F23N3/00

Regulating air supply or draught conjointly with fuel supply F23N1/00

F23N3/002

using electronic means F23N3/02 - F23N3/08 take precedence

F23N3/005

using electrical or electromechanical means F23N3/02 - F23N3/08 take precedence

F23N3/007

using mechanical means F23N3/02 - F23N3/08 take precedence

F23N3/02

Regulating draught by direct pressure operation of single valves or dampers

F23N3/04

by operation of single valves or dampers by temperature sensitive elements

F23N3/042

using electronic means

F23N3/045

using electrical or electromechanical means

F23N3/047

using mechanical means

F23N3/06

by conjoint operation of two or more valves or dampers by power-assisted systems F23N3/08

F23N3/065

using mechanical means

F23N3/08

by power-assisted systems

F23N3/082

using electronic means

F23N3/085

using electrical or electromechanical means

F23N3/087

using mechanical means

F23N5/00

Systems for controlling combustion regulating fuel supply F23N1/00, regulating air supply or draught F23N3/00

F23N5/003

using detectors sensitive to combustion gas properties F23N5/02, F23N5/18 - F23N5/26 take precedence

F23N5/006

the detector being sensitive to oxygen

F23N5/02

using devices responsive to thermal changes or to thermal expansion of a medium

F23N5/022

using electronic means F23N5/04 - F23N5/14 take precedence

F23N5/025

using electrical or electromechanical means F23N5/04 - F23N5/14 take precedence

F23N5/027

using mechanical means F23N5/04 - F23N5/14 take precedence

F23N5/04

using bimetallic elements

F23N5/042

using electronic means

F23N5/045

using electrical or electromechanical means

F23N5/047

using mechanical means

F23N5/06

using bellows

using diaphragms

F23N5/062

using electronic means

F23N5/065

using electrical or electromechanical means

F23N5/067

using mechanical means

F23N5/08

using light-sensitive elements

F23N5/082

using electronic means

F23N5/085

using electrical or electromechanical means

F23N5/087

using mechanical means

F23N5/10

using thermocouples

F23N5/102

using electronic means

F23N5/105

using electrical or electromechanical means

F23N5/107

using mechanical means, e.g. safety valves

F23N5/12

using ionisation-sensitive elements, i.e. flame rods

F23N5/123

using electronic means

F23N5/126

using electrical or electromechanical means

F23N5/14

using thermo-sensitive resistors

F23N5/143

using electronic means

F23N5/146

using electrical or electromechanical means

F23N5/16

using noise-sensitive detectors

F23N2005/165

with ultrasonic means

F23N5/18

using detectors sensitive to rate of flow of air or fuel

F23N2005/181

using detectors sensitive to rate of flow of air

F23N2005/182

Air flow switch

F23N5/184

using electronic means

F23N2005/185

using detectors sensitive to rate of flow of fuel

F23N5/187

using electrical or electromechanical means

F23N5/188

using mechanical means

F23N5/20

with a time programme acting through electrical means, e.g. using time-delay relays

F23N5/203

using electronic means

F23N5/206

using electrical or electromechanical means

F23N5/22

with a time programme acting through mechanical means, e.g. using cams

F23N5/24

Preventing development of abnormal or undesired conditions, i.e. safety arrangements F23N5/02 - F23N5/18 take precedence

F23N5/242

using electronic means

F23N5/245

using electrical or electromechanical means

F23N5/247

using mechanical means

F23N5/26

Details

F23N5/265

using electronic means

F23N2221/00

Pretreatment or prehandling

F23N2221/02

using belt conveyors

F23N2221/04

Preheating liquid fuel

F23N2221/06

Preheating gaseous fuel

F23N2221/08

Preheating the air

F23N2221/10

Analysing fuel properties, e.g. density, calorific

F23N2221/12

Recycling exhaust gases

F23N2223/00

Signal processing

Details thereof

F23N2223/02

Multiplex transmission

F23N2223/04

Memory

F23N2223/06

Sampling

F23N2223/08

Microprocessor

Microcomputer

F23N2223/10

Correlation

F23N2223/12

Integration

F23N2223/14

Differentiation

F23N2223/16

Measuring bridge

F23N2223/18

Chopper

F23N2223/20

Opto-coupler

F23N2223/22

Timing network

F23N2223/24

with bimetallic elements

F23N2223/26

with capacitors

F23N2223/28

with more than one timing element

F23N2223/30

Switches

F23N2223/32

Reed switches

F23N2223/34

with feedforward processing

F23N2223/36

PID signal processing

F23N2223/38

Remote control

F23N2223/40

Simulation

F23N2223/42

Function generator

F23N2223/44

Optimum control

F23N2223/46

Identification

F23N2223/48

Learning / Adaptive control

F23N2223/50

Human control

F23N2223/52

Fuzzy logic

F23N2223/54

Recording

F23N2225/00

Measuring

F23N2225/02

filling height in burners

F23N2225/04

pressure

F23N2225/06

for determining flow

F23N2225/08

temperature

F23N2225/10

stack temperature

F23N2225/12

room temperature

F23N2225/13

outdoor temperature

F23N2225/14

Ambient temperature around burners

F23N2225/16

burner temperature

F23N2225/18

feedwater temperature

F23N2225/19

outlet temperature water heat-exchanger

F23N2225/20

entrant temperature

F23N2225/21

outlet temperature

F23N2225/22

heat losses

F23N2225/24

indicated in an amount of money

F23N2225/26

humidity

F23N2225/30

measuring lambda

F23N2227/00

Ignition or checking

F23N2227/02

Starting or ignition cycles

F23N2227/04

Prepurge

F23N2227/06

Postpurge

F23N2227/08

Hold fire apparatus

F23N2227/10

Sequential burner running

F23N2227/12

Burner simulation or checking

F23N2227/14

Flame simulation

F23N2227/16

Checking components, e.g. electronic

F23N2227/18

Applying test signals, e.g. periodic

F23N2227/20

Calibrating devices

F23N2227/22

Pilot burners

F23N2227/24

the pilot burner not burning continuously

F23N2227/26

comprising two or more distinct pilot burners

F23N2227/28

Ignition circuits

F23N2227/30

for pilot burners

F23N2227/32

Igniting for a predetermined number of cycles

F23N2227/34

Continuously applied ignition cycles

F23N2227/36

Spark ignition, e.g. by means of a high voltage

F23N2227/38

Electrical resistance ignition

F23N2227/40

Catalytic ignition

F23N2227/42

Ceramic glow ignition

F23N2229/00

Flame sensors

F23N2229/02

Pilot flame sensors

F23N2229/04

sensitive to the colour of flames

F23N2229/06

with periodical shutters

Modulation signals

F23N2229/08

detecting flame flicker

F23N2229/10

comprising application of periodical fuel flow fluctuations

F23N2229/12

with flame rectification current detecting means

F23N2229/14

using two or more different types of flame sensor

F23N2229/16

using two or more of the same types of flame sensor

F23N2229/18

Flame sensor cooling means

F23N2229/20

Camera viewing

F23N2229/22

the sensor's sensitivity being variable

F23N2231/00

Fail safe

F23N2231/02

using electric energy accumulators

F23N2231/04

for electrical power failures

F23N2231/06

for flame failures

F23N2231/08

for pilot flame failures

F23N2231/10

for component failures

F23N2231/12

for ignition failures

F23N2231/14

for earthquakes

F23N2231/16

using melting materials or shape memory alloys

F23N2231/18

Detecting fluid leaks

F23N2231/20

Warning devices

F23N2231/22

using warning lamps

F23N2231/24

Freezing

F23N2231/26

for clogging air inlet

F23N2231/28

preventing flash-back or blow-back

F23N2231/30

Representation of working time

F23N2233/00

Ventilators

F23N2233/02

in stacks

F23N2233/04

with variable speed

F23N2233/06

at the air intake

F23N2233/08

with variable speed

F23N2233/10

forcing air through heat exchangers

F23N2235/00

Valves, nozzles or pumps

F23N2235/02

Air or combustion gas valves or dampers

F23N2235/04

in stacks

F23N2235/06

at the air intake

F23N2235/08

used with heat exchanges

F23N2235/10

power assisted, e.g. using electric motors

F23N2235/12

Fuel valves

F23N2235/14

electromagnetically operated

F23N2235/16

variable flow or proportional valves

F23N2235/18

Groups of two or more valves

F23N2235/20

Membrane valves

F23N2235/22

cooperating with magnets

F23N2235/24

Valve details

F23N2235/26

Fuel nozzles

F23N2235/28

Spray fuel nozzles

F23N2235/30

Pumps

F23N2237/00

Controlling

F23N2237/02

two or more burners

F23N2237/04

at two or more different localities

F23N2237/06

two predeterming temperatures, e.g. day-night

F23N2237/08

two or more different types of fuel simultaneously

F23N2237/10

High or low fire

F23N2237/12

catalytic burners

F23N2237/14

burners with gasification or vaporizer elements

F23N2237/16

secondary air

F23N2237/18

fluidized bed burners

F23N2237/20

one or more bypass conduits

F23N2237/22

water injection

F23N2237/24

height of burner

F23N2237/26

oxygen-air ratio

F23N2237/28

oxygen as pure oxydant

F23N2237/30

matrix burners

F23N2237/32

Nox

F23N2239/00

Fuels

F23N2239/02

Solid fuels

F23N2239/04

Gaseous fuels

F23N2239/06

Liquid fuels

F23N2241/00

Applications

F23N2241/02

Space-heating

F23N2241/04

Heating water

F23N2241/06

Space-heating and heating water

F23N2241/08

Household apparatus

F23N2241/10

Generating vapour

F23N2241/11

Torches

F23N2241/12

Stack-torches

F23N2241/14

Vehicle heating, the heat being derived otherwise than from the propulsion plant

F23N2241/16

Spectrometer burners

F23N2241/18

Incinerating apparatus

F23N2241/20

Gas turbines

F23N2241/22

Absorption refrigerator

F23N2900/00

Special features of, or arrangements for controlling combustion

F23N2900/01001

Micro Electro Mechanical Systems [MEMS] for controlling fuel supply to burners

F23N2900/01002

Electromagnetically operated fuel valves with a single solenoid controlling two or more cores

F23N2900/05001

Measuring CO content in flue gas

F23N2900/05002

Measuring CO₂ content in flue gas

F23N2900/05003

Measuring NOx content in flue gas

F23N2900/05004

Details of components, e.g. connecting adaptors

F23N2900/05005

Mounting arrangements for sensing, detecting or measuring devices

F23N2900/05006

Controlling systems using neuronal networks

F23N2900/05101

Connections between thermocouple and magnetic valves, e.g. by plug and socket connectors

F23N2900/05181

Controlling air to fuel ratio by using a single differential pressure detector