1. CPC Sections
  2. CPC Section F
  3. CPC Class F23
  4. CPC Subclass F23R
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Version: 2024.08
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CPC
COOPERATIVE PATENT CLASSIFICATION
​
F23R
GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (fluidised bed combustion apparatus specially adapted for operation at superatmospheric pressures F23C 10/16) [2018-08]
WARNING

  • In this subclass non-limiting references (in the sense of paragraph 39 of the Guide to the IPC) may still be displayed in the scheme.
F23R 3/00
Continuous combustion chambers using liquid or gaseous fuel [2013-01]
F23R 3/002
.
{Wall structures (F23R 3/02 and F23R 3/007 take precedence)} [2013-01]
F23R 3/005
.
{Combined with pressure or heat exchangers} [2013-01]
F23R 3/007
.
{constructed mainly of ceramic components} [2013-01]
F23R 3/02
.
characterised by the air-flow or gas-flow configuration (reverse- flow combustion chambers F23R 3/54; cyclone or vortex type combustion chambers F23R 3/58) [2013-01]
F23R 3/04
. .
Air inlet arrangements [2013-01]
F23R 3/045
. . .
{using pipes} [2013-01]
F23R 3/06
. . .
Arrangement of apertures along the flame tube [2013-01]
F23R 3/08
. . . .
between annular flame tube sections, e.g. flame tubes with telescopic sections [2013-01]
F23R 3/10
. . .
for primary air (F23R 3/06, F23R 3/045 take precedence) [2013-01]
F23R 3/12
. . . .
inducing a vortex [2013-01]
F23R 3/14
. . . . .
by using swirl vanes [2013-01]
F23R 3/16
. .
with devices inside the flame tube or the combustion chamber to influence the air or gas flow [2013-01]
F23R 3/18
. . .
Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants [2013-01]
F23R 3/20
. . . .
incorporating fuel injection means [2013-01]
F23R 3/22
. . . .
movable, e.g. to an inoperative position; adjustable, e.g. self-adjusting [2013-01]
F23R 3/24
. . . .
of the fluid-screen type [2013-01]
F23R 3/26
. .
Controlling the air flow [2013-01]
F23R 3/28
.
characterised by the fuel supply (burners F23D) [2013-01]
F23R 3/283
. .
{Attaching or cooling of fuel injecting means including supports for fuel injectors, stems, or lances} [2018-08]
F23R 3/286
. .
{having fuel-air premixing devices (F23R 3/30 takes precedence)} [2013-01]
F23R 3/30
. .
comprising fuel prevapourising devices [2013-01]
F23R 3/32
. . .
being tubular [2013-01]
F23R 3/34
. .
Feeding into different combustion zones [2013-01]
F23R 3/343
. . .
{Pilot flames, i.e. fuel nozzles or injectors using only a very small proportion of the total fuel to insure continuous combustion (ignition in gas-turbine plants F02C 7/264; pilot flame igniters F23Q 9/00)} [2013-01]
F23R 3/346
. . .
{for staged combustion} [2013-01]
F23R 3/36
. .
Supply of different fuels [2013-01]
F23R 3/38
. .
comprising rotary fuel injection means [2013-01]
F23R 3/40
.
characterised by the use of catalytic means [2018-08]
F23R 3/42
.
characterised by the arrangement or form of the flame tubes or combustion chambers [2013-01]
F23R 3/425
. .
{Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes} [2013-01]
F23R 3/44
. .
Combustion chambers comprising a {single} tubular flame tube within a tubular casing (reverse-flow combustion chambers F23R 3/54) [2013-01]
F23R 3/46
. .
Combustion chambers comprising an annular arrangement of {several essentially tubular} flame tubes within a common annular casing or within individual casings [2013-01]
F23R 3/48
. . .
Flame tube interconnectors, e.g. cross-over tubes [2013-01]
F23R 3/50
. .
Combustion chambers comprising an annular flame tube within an annular casing (toroidal combustion chambers F23R 3/52) [2013-01]
F23R 3/52
. .
Toroidal combustion chambers [2013-01]
F23R 3/54
. .
Reverse-flow combustion chambers [2013-01]
F23R 3/56
. .
Combustion chambers having rotary flame tubes [2013-01]
F23R 3/58
. .
Cyclone or vortex type combustion chambers [2013-01]
F23R 3/60
. .
Support structures; Attaching or mounting means [2013-01]
F23R 5/00
Continuous combustion chambers using solid or pulverulent fuel [2013-01]
F23R 7/00
Intermittent or explosive combustion chambers [2013-01]
F23R 2900/00
Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor [2013-01]
F23R 2900/00001
.
Arrangements using bellows, e.g. to adjust volumes or reduce thermal stresses [2013-01]
F23R 2900/00002
.
Gas turbine combustors adapted for fuels having low heating value [LHV] [2013-01]
F23R 2900/00004
.
Preventing formation of deposits on surfaces of gas turbine components, e.g. coke deposits [2013-01]
F23R 2900/00005
.
Preventing fatigue failures or reducing mechanical stress in gas turbine components [2013-01]
F23R 2900/00006
.
Using laser for starting or improving the combustion process [2013-01]
F23R 2900/00008
.
Combustion techniques using plasma gas [2024-08]
F23R 2900/00009
.
Using plasma torches for igniting, stabilizing, or improving the combustion process [2013-01]
F23R 2900/00012
.
Details of sealing devices [2013-01]
F23R 2900/00013
.
Reducing thermo-acoustic vibrations by active means [2013-01]
F23R 2900/00014
.
Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators [2024-08]
F23R 2900/00015
.
Trapped vortex combustion chambers [2013-01]
F23R 2900/00016
.
Retrofitting in general, e.g. to respect new regulations on pollution [2013-01]
F23R 2900/00017
.
Assembling combustion chamber liners or subparts [2013-01]
F23R 2900/00018
.
Manufacturing combustion chamber liners or subparts [2013-01]
F23R 2900/00019
.
Repairing or maintaining combustion chamber liners or subparts [2013-01]
F23R 2900/03041
.
Effusion cooled combustion chamber walls or domes [2013-01]
F23R 2900/03042
.
Film cooled combustion chamber walls or domes [2013-01]
F23R 2900/03043
.
Convection cooled combustion chamber walls with means for guiding the cooling air flow [2024-08]
F23R 2900/03044
.
Impingement cooled combustion chamber walls or subassemblies [2013-01]
F23R 2900/03045
.
Convection cooled combustion chamber walls provided with turbolators or means for creating turbulences to increase cooling [2013-01]
F23R 2900/03281
.
Intermittent fuel injection or supply with plunger pump or other means therefor [2013-01]
F23R 2900/03282
.
High speed injection of air and/or fuel inducing internal recirculation [2013-01]
F23R 2900/03341
.
Sequential combustion chambers or burners [2013-01]
F23R 2900/03342
.
Arrangement of silo-type combustion chambers [2013-01]
F23R 2900/03343
.
Pilot burners operating in premixed mode [2013-01]