1. CPC Sections
  2. CPC Section F
  3. CPC Class F23
  4. CPC Subclass F23N
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CPC
COOPERATIVE PATENT CLASSIFICATION
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 F23C 10/28; condition responsive controls for regulating combustion in domestic stoves with open fires for solid fuel F24B 1/187) [2020-01]
F23N 1/00
Regulating fuel supply [2013-01]
F23N 1/002
.
{using electronic means (F23N 1/04 - F23N 1/10 take precedence)} [2016-05]
F23N 1/005
.
{using electrical or electromechanical means (F23N 1/04 - F23N 1/10 take precedence)} [2016-05]
F23N 1/007
.
{using mechanical means (F23N 1/04 - F23N 1/10 take precedence)} [2016-05]
F23N 1/02
.
conjointly with air supply [2013-01]
F23N 1/022
. .
{using electronic means} [2013-01]
F23N 1/025
. .
{using electrical or electromechanical means} [2013-01]
F23N 1/027
. .
{using mechanical means} [2013-01]
F23N 1/04
.
conjointly with air supply and with draught [2013-01]
F23N 1/042
. .
{using electronic means} [2013-01]
F23N 1/045
. .
{using electrical or electromechanical means} [2013-01]
F23N 1/047
. .
{using mechanical means} [2013-01]
F23N 1/06
.
conjointly with draught [2013-01]
F23N 1/062
. .
{using electronic means} [2013-01]
F23N 1/065
. .
{using electrical or electromechanical means} [2013-01]
F23N 1/067
. .
{using mechanical means} [2013-01]
F23N 1/08
.
conjointly with another medium, e.g. boiler water [2013-01]
F23N 1/082
. .
{using electronic means} [2013-01]
F23N 1/085
. .
{using electrical or electromechanical means} [2013-01]
F23N 1/087
. .
{using mechanical means} [2013-01]
F23N 1/10
. .
and with air supply or draught [2013-01]
F23N 1/102
. . .
{using electronic means} [2013-01]
F23N 1/105
. . .
{using electrical or electromechanical means} [2013-01]
F23N 1/107
. . .
{using mechanical means} [2013-01]
F23N 3/00
Regulating air supply or draught (conjointly with fuel supply F23N 1/00) [2013-01]
F23N 3/002
.
{using electronic means (F23N 3/02 - F23N 3/08 take precedence)} [2016-05]
F23N 3/005
.
{using electrical or electromechanical means (F23N 3/02 - F23N 3/08 take precedence)} [2016-05]
F23N 3/007
.
{using mechanical means (F23N 3/02 - F23N 3/08 take precedence)} [2016-05]
F23N 3/02
.
Regulating draught by direct pressure operation of single valves or dampers [2013-01]
F23N 3/04
.
by operation of single valves or dampers by temperature sensitive elements [2013-01]
F23N 3/042
. .
{using electronic means} [2013-01]
F23N 3/045
. .
{using electrical or electromechanical means} [2013-01]
F23N 3/047
. .
{using mechanical means} [2013-01]
F23N 3/06
.
by conjoint operation of two or more valves or dampers (by power-assisted systems F23N 3/08) [2020-01]
F23N 3/065
. .
{using mechanical means} [2013-01]
F23N 3/08
.
by power-assisted systems [2013-01]
F23N 3/082
. .
{using electronic means} [2013-01]
F23N 3/085
. .
{using electrical or electromechanical means} [2013-01]
F23N 3/087
. .
{using mechanical means} [2013-01]
F23N 5/00
Systems for controlling combustion (regulating fuel supply F23N 1/00, regulating air supply or draught F23N 3/00) [2020-01]
F23N 5/003
.
{using detectors sensitive to combustion gas properties (F23N 5/02, F23N 5/18 - F23N 5/26 take precedence)} [2016-05]
F23N 5/006
. .
{the detector being sensitive to oxygen} [2013-01]
F23N 5/02
.
using devices responsive to thermal changes or to thermal expansion of a medium [2013-01]
F23N 5/022
. .
{using electronic means (F23N 5/04 - F23N 5/14 take precedence)} [2016-05]
F23N 5/025
. .
{using electrical or electromechanical means (F23N 5/04 - F23N 5/14 take precedence)} [2016-05]
F23N 5/027
. .
{using mechanical means (F23N 5/04 - F23N 5/14 take precedence)} [2016-05]
F23N 5/04
. .
using bimetallic elements [2013-01]
F23N 5/042
. . .
{using electronic means} [2013-01]
F23N 5/045
. . .
{using electrical or electromechanical means} [2013-01]
F23N 5/047
. . .
{using mechanical means} [2013-01]
F23N 5/06
. .
using bellows; using diaphragms [2013-01]
F23N 5/062
. . .
{using electronic means} [2013-01]
F23N 5/065
. . .
{using electrical or electromechanical means} [2013-01]
F23N 5/067
. . .
{using mechanical means} [2013-01]
F23N 5/08
. .
using light-sensitive elements [2013-01]
F23N 5/082
. . .
{using electronic means} [2013-01]
F23N 5/085
. . .
{using electrical or electromechanical means} [2013-01]
F23N 5/087
. . .
{using mechanical means} [2013-01]
F23N 5/10
. .
using thermocouples [2013-01]
F23N 5/102
. . .
{using electronic means} [2013-01]
F23N 5/105
. . .
{using electrical or electromechanical means} [2013-01]
F23N 5/107
. . .
{using mechanical means, e.g. safety valves} [2016-08]
F23N 5/12
. .
using ionisation-sensitive elements, i.e. flame rods [2020-01]
F23N 5/123
. . .
{using electronic means} [2013-01]
F23N 5/126
. . .
{using electrical or electromechanical means} [2013-01]
F23N 5/14
. .
using thermo-sensitive resistors [2013-01]
F23N 5/143
. . .
{using electronic means} [2013-01]
F23N 5/146
. . .
{using electrical or electromechanical means} [2013-01]
F23N 5/16
.
using noise-sensitive detectors [2013-01]
F23N 2005/165
. .
{with ultrasonic means} [2013-01]
F23N 5/18
.
using detectors sensitive to rate of flow of air or fuel [2013-01]
F23N 2005/181
. .
{using detectors sensitive to rate of flow of air} [2013-01]
F23N 2005/182
. . .
{Air flow switch} [2013-01]
F23N 5/184
. .
{using electronic means} [2013-01]
F23N 2005/185
. .
{using detectors sensitive to rate of flow of fuel} [2013-01]
F23N 5/187
. .
{using electrical or electromechanical means} [2013-01]
F23N 5/188
. .
{using mechanical means} [2013-01]
F23N 5/20
.
with a time programme acting through electrical means, e.g. using time-delay relays [2013-01]
F23N 5/203
. .
{using electronic means} [2013-01]
F23N 5/206
. .
{using electrical or electromechanical means} [2013-01]
F23N 5/22
.
with a time programme acting through mechanical means, e.g. using cams [2013-01]
F23N 5/24
.
Preventing development of abnormal or undesired conditions, i.e. safety arrangements (F23N 5/02 - F23N 5/18 take precedence) [2016-05]
F23N 5/242
. .
{using electronic means} [2013-01]
F23N 5/245
. .
{using electrical or electromechanical means} [2013-01]
F23N 5/247
. .
{using mechanical means} [2013-01]
F23N 5/26
.
Details [2013-01]
F23N 5/265
. .
{using electronic means} [2013-01]
F23N 2221/00
Pretreatment or prehandling [2020-01]
F23N 2221/02
.
using belt conveyors [2020-01]
F23N 2221/04
.
Preheating liquid fuel [2020-01]
F23N 2221/06
.
Preheating gaseous fuel [2020-01]
F23N 2221/08
.
Preheating the air [2020-01]
F23N 2221/10
.
Analysing fuel properties, e.g. density, calorific [2020-01]
F23N 2221/12
.
Recycling exhaust gases [2020-01]
F23N 2223/00
Signal processing; Details thereof [2020-01]
F23N 2223/02
.
Multiplex transmission [2020-01]
F23N 2223/04
.
Memory [2020-01]
F23N 2223/06
.
Sampling [2020-01]
F23N 2223/08
.
Microprocessor; Microcomputer [2020-01]
F23N 2223/10
.
Correlation [2020-01]
F23N 2223/12
.
Integration [2020-01]
F23N 2223/14
.
Differentiation [2020-01]
F23N 2223/16
.
Measuring bridge [2020-01]
F23N 2223/18
.
Chopper [2020-01]
F23N 2223/20
.
Opto-coupler [2020-01]
F23N 2223/22
.
Timing network [2020-01]
F23N 2223/24
. .
with bimetallic elements [2020-01]
F23N 2223/26
. .
with capacitors [2020-01]
F23N 2223/28
. .
with more than one timing element [2020-01]
F23N 2223/30
.
Switches [2020-01]
F23N 2223/32
. .
Reed switches [2020-01]
F23N 2223/34
.
with feedforward processing [2020-01]
F23N 2223/36
.
PID signal processing [2020-01]
F23N 2223/38
.
Remote control [2020-01]
F23N 2223/40
.
Simulation [2020-01]
F23N 2223/42
.
Function generator [2020-01]
F23N 2223/44
.
Optimum control [2020-01]
F23N 2223/46
.
Identification [2020-01]
F23N 2223/48
.
Learning / Adaptive control [2020-01]
F23N 2223/50
.
Human control [2020-01]
F23N 2223/52
.
Fuzzy logic [2020-01]
F23N 2223/54
.
Recording [2020-01]
F23N 2225/00
Measuring [2020-01]
F23N 2225/02
.
filling height in burners [2020-01]
F23N 2225/04
.
pressure [2020-01]
F23N 2225/06
. .
for determining flow [2020-01]
F23N 2225/08
.
temperature [2020-01]
F23N 2225/10
. .
stack temperature [2020-01]
F23N 2225/12
. .
room temperature [2020-01]
F23N 2225/13
. .
outdoor temperature [2020-01]
F23N 2225/14
. .
Ambient temperature around burners [2020-01]
F23N 2225/16
. .
burner temperature [2020-01]
F23N 2225/18
. .
feedwater temperature [2020-01]
F23N 2225/19
. .
outlet temperature water heat-exchanger [2020-01]
F23N 2225/20
. .
entrant temperature [2020-01]
F23N 2225/21
. .
outlet temperature [2020-01]
F23N 2225/22
.
heat losses [2020-01]
F23N 2225/24
. .
indicated in an amount of money [2020-01]
F23N 2225/26
.
humidity [2020-01]
F23N 2225/30
. .
measuring lambda [2020-01]
F23N 2227/00
Ignition or checking [2020-01]
F23N 2227/02
.
Starting or ignition cycles [2020-01]
F23N 2227/04
.
Prepurge [2020-01]
F23N 2227/06
.
Postpurge [2020-01]
F23N 2227/08
.
Hold fire apparatus [2020-01]
F23N 2227/10
.
Sequential burner running [2020-01]
F23N 2227/12
.
Burner simulation or checking [2020-01]
F23N 2227/14
. .
Flame simulation [2020-01]
F23N 2227/16
. .
Checking components, e.g. electronic [2020-01]
F23N 2227/18
.
Applying test signals, e.g. periodic [2020-01]
F23N 2227/20
.
Calibrating devices [2020-01]
F23N 2227/22
.
Pilot burners [2020-01]
F23N 2227/24
. .
the pilot burner not burning continuously [2020-01]
F23N 2227/26
. .
comprising two or more distinct pilot burners [2020-01]
F23N 2227/28
.
Ignition circuits [2020-01]
F23N 2227/30
. .
for pilot burners [2020-01]
F23N 2227/32
.
Igniting for a predetermined number of cycles [2020-01]
F23N 2227/34
.
Continuously applied ignition cycles [2020-01]
F23N 2227/36
.
Spark ignition, e.g. by means of a high voltage [2020-01]
F23N 2227/38
.
Electrical resistance ignition [2020-01]
F23N 2227/40
.
Catalytic ignition [2020-01]
F23N 2227/42
.
Ceramic glow ignition [2020-01]
F23N 2229/00
Flame sensors [2020-01]
F23N 2229/02
.
Pilot flame sensors [2020-01]
F23N 2229/04
.
sensitive to the colour of flames [2020-01]
F23N 2229/06
.
with periodical shutters; Modulation signals [2020-01]
F23N 2229/08
.
detecting flame flicker [2020-01]
F23N 2229/10
.
comprising application of periodical fuel flow fluctuations [2020-01]
F23N 2229/12
.
with flame rectification current detecting means [2020-01]
F23N 2229/14
.
using two or more different types of flame sensor [2020-01]
F23N 2229/16
.
using two or more of the same types of flame sensor [2020-01]
F23N 2229/18
.
Flame sensor cooling means [2020-01]
F23N 2229/20
.
Camera viewing [2020-01]
F23N 2229/22
.
the sensor's sensitivity being variable [2020-01]
F23N 2231/00
Fail safe [2020-01]
F23N 2231/02
.
using electric energy accumulators [2020-01]
F23N 2231/04
.
for electrical power failures [2020-01]
F23N 2231/06
.
for flame failures [2020-01]
F23N 2231/08
. .
for pilot flame failures [2020-01]
F23N 2231/10
.
for component failures [2020-01]
F23N 2231/12
.
for ignition failures [2020-01]
F23N 2231/14
.
for earthquakes [2020-01]
F23N 2231/16
.
using melting materials or shape memory alloys [2020-01]
F23N 2231/18
.
Detecting fluid leaks [2020-01]
F23N 2231/20
.
Warning devices [2020-01]
F23N 2231/22
. .
using warning lamps [2020-01]
F23N 2231/24
.
Freezing [2020-01]
F23N 2231/26
.
for clogging air inlet [2020-01]
F23N 2231/28
.
preventing flash-back or blow-back [2020-01]
F23N 2231/30
.
Representation of working time [2020-01]
F23N 2233/00
Ventilators [2020-01]
F23N 2233/02
.
in stacks [2020-01]
F23N 2233/04
. .
with variable speed [2020-01]
F23N 2233/06
.
at the air intake [2020-01]
F23N 2233/08
. .
with variable speed [2020-01]
F23N 2233/10
.
forcing air through heat exchangers [2020-01]
F23N 2235/00
Valves, nozzles or pumps [2020-01]
F23N 2235/02
.
Air or combustion gas valves or dampers [2020-01]
F23N 2235/04
. .
in stacks [2020-01]
F23N 2235/06
. .
at the air intake [2020-01]
F23N 2235/08
. .
used with heat exchanges [2020-01]
F23N 2235/10
. .
power assisted, e.g. using electric motors [2020-01]
F23N 2235/12
.
Fuel valves [2020-01]
F23N 2235/14
. .
electromagnetically operated [2020-01]
F23N 2235/16
. .
variable flow or proportional valves [2020-01]
F23N 2235/18
. .
Groups of two or more valves [2020-01]
F23N 2235/20
. .
Membrane valves [2020-01]
F23N 2235/22
. .
cooperating with magnets [2020-01]
F23N 2235/24
. .
Valve details [2020-01]
F23N 2235/26
.
Fuel nozzles [2020-01]
F23N 2235/28
. .
Spray fuel nozzles [2020-01]
F23N 2235/30
.
Pumps [2020-01]
F23N 2237/00
Controlling [2020-01]
F23N 2237/02
.
two or more burners [2020-01]
F23N 2237/04
.
at two or more different localities [2020-01]
F23N 2237/06
.
two predeterming temperatures, e.g. day-night [2020-01]
F23N 2237/08
.
two or more different types of fuel simultaneously [2020-01]
F23N 2237/10
.
High or low fire [2020-01]
F23N 2237/12
.
catalytic burners [2020-01]
F23N 2237/14
.
burners with gasification or vaporizer elements [2020-01]
F23N 2237/16
.
secondary air [2020-01]
F23N 2237/18
.
fluidized bed burners [2020-01]
F23N 2237/20
.
one or more bypass conduits [2020-01]
F23N 2237/22
.
water injection [2020-01]
F23N 2237/24
.
height of burner [2020-01]
F23N 2237/26
. .
oxygen-air ratio [2020-01]
F23N 2237/28
. .
oxygen as pure oxydant [2020-01]
F23N 2237/30
. .
matrix burners [2020-01]
F23N 2237/32
. .
Nox [2020-01]
F23N 2239/00
Fuels [2020-01]
F23N 2239/02
.
Solid fuels [2020-01]
F23N 2239/04
.
Gaseous fuels [2020-01]
F23N 2239/06
.
Liquid fuels [2020-01]
F23N 2241/00
Applications [2020-01]
F23N 2241/02
.
Space-heating [2020-01]
F23N 2241/04
.
Heating water [2020-01]
F23N 2241/06
.
Space-heating and heating water [2020-01]
F23N 2241/08
.
Household apparatus [2020-01]
F23N 2241/10
.
Generating vapour [2020-01]
F23N 2241/11
.
Torches [2020-01]
F23N 2241/12
.
Stack-torches [2020-01]
F23N 2241/14
.
Vehicle heating, the heat being derived otherwise than from the propulsion plant [2020-01]
F23N 2241/16
.
Spectrometer burners [2020-01]
F23N 2241/18
.
Incinerating apparatus [2020-01]
F23N 2241/20
.
Gas turbines [2020-01]
F23N 2241/22
.
Absorption refrigerator [2020-01]
F23N 2900/00
Special features of, or arrangements for controlling combustion [2013-01]
F23N 2900/01001
.
Micro Electro Mechanical Systems [MEMS] for controlling fuel supply to burners [2013-01]
F23N 2900/01002
.
Electromagnetically operated fuel valves with a single solenoid controlling two or more cores [2013-01]
F23N 2900/05001
.
Measuring CO content in flue gas [2013-01]
F23N 2900/05002
.
Measuring CO2 content in flue gas [2013-01]
F23N 2900/05003
.
Measuring NOx content in flue gas [2013-01]
F23N 2900/05004
.
Details of components, e.g. connecting adaptors [2013-01]
F23N 2900/05005
.
Mounting arrangements for sensing, detecting or measuring devices [2013-01]
F23N 2900/05006
.
Controlling systems using neuronal networks [2013-01]
F23N 2900/05101
.
Connections between thermocouple and magnetic valves, e.g. by plug and socket connectors [2013-01]
F23N 2900/05181
.
Controlling air to fuel ratio by using a single differential pressure detector [2013-01]