IPC 6 English version  Class F23
SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 23

COMBUSTION APPARATUS; COMBUSTION PROCESSES

Note

In this class, the following terms or expressions are used with the meanings indicated:

–

"combustion" means the direct combination of oxygen gas, e.g. in air, and a burnable substance. Any other heat-producing combination of chemical substances, e.g. hydrogen peroxide and methane, iron oxide and aluminium, is covered by section C or by subclass F 24 J;

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"combustion chamber" means a chamber in which fuel is burned to establish a self-supporting fire or flame and which surrounds that fire or flame;

–

"burner" means a device by which fluent fuel is passed to a combustion space where it burns to produce a self-supporting flame;

–

"air" means a mixture of gases containing free oxygen and able to promote or support combustion.

F 23 B

COMBUSTION APPARATUS USING ONLY SOLID FUEL (for lump and another kind of fuel simultaneously or alternatively F 23 C 1/00; combustion in fluidised beds F 23 C 11/02; burning of low-grade fuel F 23 G; grates F 23 H; feeding solid fuel to combustion apparatus F 23 K; constructional details of combustion chambers not otherwise provided for F 23 M; domestic apparatus F 24; central heating boilers F 24 D; package boilers F 24 H)

F 23 C

COMBUSTION APPARATUS USING FLUENT FUEL (combustion apparatus for solid fuel only F 23 B; burners F 23 D; constructional details of combustion chambers not otherwise provided for F 23 M; combustion chambers for generating combustion products of high pressure or high velocity F 23 R)

F 23 D

BURNERS (generating combustion products of high pressure or high velocity F 23 R)

F 23 G

CREMATION FURNACES; CONSUMING WASTE BY COMBUSTION

F 23 H

GRATES; CLEANING OR RAKING GRATES

F 23 J

REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (precipitating dust from flue gases B 01 D; composition of fuels C 10; combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F 23 G 7/06)

F 23 K

FEEDING FUEL TO COMBUSTION APPARATUS (regulating or controlling combustion F 23 N)

F 23 L

AIR SUPPLY; DRAUGHT-INDUCING; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS (air-supply arrangements for fluent fuels F 23 C; dampers or throat restrictors for open fire-places F 24; air inlet valves for open fire fronts F 24)

F 23 M

CONSTRUCTIONAL DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR (construction or support of tube walls for steam boilers F 22 B; generating combustion products of high pressure or high velocity F 23 R)

F 23 N

REGULATING OR CONTROLLING COMBUSTION (regulating in general G 05)

F 23 Q

IGNITION (devices for igniting matches A 24 F; explosive or thermic compositions C 06 B; chemical igniters C 06 C; devices or installations peculiar to internal-combustion engines, except glowing plugs, F 02 P); EXTINGUISHING DEVICES

F 23 R

GENERATING COMBUSTION PRODUCTS OF HIGH PRESSURE OR HIGH VELOCITY, e.g. GAS-TURBINE COMBUSTION CHAMBERS (chemical aspects of gas production C 06 D 5/00; gas-turbine plants characterised by the arrangement of the combustion chamber in the plant F 02 C 3/14; arrangement of afterburners in jet-propulsion plants F 02 K 3/10; combustion chambers of rocket engine plants F 02 K 9/00; using such products for specific purposes, see the relevant classes for the purposes)
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