WebCPC CPC COOPERATIVE PATENT CLASSIFICATION

F23R　GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (using such products for specific purposes, see the relevant classes for the purposes; chemical aspects of gas production C06D 5/00; gas-turbine plants characterised by the arrangement of the combustion chamber in the plant F02C 3/14; arrangement of afterburners in jet-propulsion plants F02K 3/10; combustion chambers of rocket-engine plants F02K 9/00)

F23R 3/00 Continuous combustion chambers using liquid or gaseous fuel

F23R 3/002 ・{Wall structures (F23R 3/02 and F23R 3/007 take precedence)}

F23R 3/005 ・{Combined with pressure or heat exchangers}

F23R 3/007 ・{constructed mainly of ceramic components}

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)

F23R 3/04 ・・Air inlet arrangements

F23R 3/045 ・・・{using pipes}

F23R 3/06 ・・・Arrangement of apertures along the flame tube

F23R 3/08 ・・・・between annular flame tube sections, e.g. flame tubes with telescopic sections

F23R 3/10 ・・・for primary air (F23R 3/06, F23R 3/045 take precedence)

F23R 3/12 ・・・・inducing a vortex

F23R 3/14 ・・・・・by using swirl vanes

F23R 3/16 ・・with devices inside the flame tube or the combustion chamber to influence the air or gas flow

F23R 3/18 ・・・Flame stabilising means, e.g. flame holders for after-burners of jet-propulsion plants

F23R 3/20 ・・・・incorporating fuel injection means

F23R 3/22 ・・・・movable, e.g. to an inoperative position; adjustable, e.g. self-adjusting

F23R 3/24 ・・・・of the fluid-screen type

F23R 3/26 ・・Controlling the air flow

F23R 3/28 ・characterised by the fuel supply (burners F23D)

F23R 3/283 ・・{Attaching or cooling of fuel injecting means}

F23R 3/286 ・・{having fuel-air premixing devices (F23R 3/30 takes precedence)}

F23R 3/30 ・・comprising fuel prevapourising devices

F23R 3/32 ・・・being tubular

F23R 3/34 ・・Feeding into different combustion zones

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)}

F23R 3/346 ・・・{for staged combustion}

F23R 3/36 ・・Supply of different fuels

F23R 3/38 ・・comprising rotary fuel injection means

F23R 3/40 ・characterised by the used of catalytic means

F23R 3/42 ・characterised by the arrangement or form of the flame tubes or combustion chambers

F23R 3/425 ・・{Combustion chambers comprising a tangential or helicoidal arrangement of the flame tubes}

F23R 3/44 ・・Combustion chambers comprising a {single} tubular flame tube within a tubular casing (reverse-flow combustion chambers F23R 3/54)

F23R 3/46 ・・Combustion chambers comprising an annular arrangement of {several essentially tubular} flame tubes within a common annular casing or within individual casings

F23R 3/48 ・・・Flame tube interconnectors, e.g. cross-over tubes

F23R 3/50 ・・Combustion chambers comprising an annular flame tube within an annular casing (toroidal combustion chambers F23R 3/52)

F23R 3/52 ・・Toroidal combustion chambers

F23R 3/54 ・・Reverse-flow combustion chambers

F23R 3/56 ・・Combustion chambers having rotary flame tubes

F23R 3/58 ・・Cyclone or vortex type combustion chambers

F23R 3/60 ・・Support structures; Attaching or mounting means

F23R 5/00 Continuous combustion chambers using solid or pulverulent fuel

F23R 7/00 Intermittent or explosive combustion chambers

F23R 2900/00 Special features of, or arrangements for continuous combustion chambers; Combustion processes therefor

F23R 2900/00001 ・Arrangements using bellows, e.g. to adjust volumes or reduce thermal stresses

F23R 2900/00002 ・Gas turbine combustors adapted for fuels having low heating value (LHV)

F23R 2900/00004 ・Preventing formation of deposits on surfaces of gas turbine components, e.g. coke deposits

F23R 2900/00005 ・Preventing fatigue failures or reducing mechanical stress in gas turbine components

F23R 2900/00006 ・Using laser for starting or improving the combustion process

F23R 2900/00008 ・Combustion techniques using plasma gas (plasma torches F23R 2900/00009)

F23R 2900/00009 ・Using plasma torches for igniting, stabilizing, or improving the combustion process

F23R 2900/00012 ・Details of sealing devices

F23R 2900/00013 ・Reducing thermo-acoustic vibrations by active means

F23R 2900/00014 ・Reducing thermo-acoustic vibrations by passive means, e.g. by Helmholtz resonators (silence apparatus using resonance F01N 1/023)

F23R 2900/00015 ・Trapped vortex combustion chambers

F23R 2900/00016 ・Retrofitting in general, e.g. to respect new regulations on pollution

F23R 2900/00017 ・Assembling combustion chamber liners or subparts

F23R 2900/00018 ・Manufacturing combustion chamber liners or subparts

F23R 2900/00019 ・Repairing or maintaining combustion chamber liners or subparts

F23R 2900/03041 ・Effusion cooled combustion chamber walls or domes

F23R 2900/03042 ・Film cooled combustion chamber walls or domes

F23R 2900/03043 ・Convection cooled combustion chamber walls with means for guiding the cooling air flow (means for creating turbulence 900/03045)

F23R 2900/03044 ・Impingement cooled combustion chamber walls or subassemblies

F23R 2900/03045 ・Convection cooled combustion chamber walls provided with turbolators or means for creating turbulences to increase cooling

F23R 2900/03281 ・Intermittent fuel injection or supply with plunger pump or other means therefor

F23R 2900/03282 ・High speed injection of air and/or fuel inducing internal recirculation

F23R 2900/03341 ・Sequential combustion chambers or burners

F23R 2900/03342 ・Arrangement of silo-type combustion chambers

F23R 2900/03343 ・Pilot burners operating in premixed mode