IPC 7 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 F24J;

–

"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 F23C 1/00; fluidised bed combustion apparatus F23C 10/00; burning of low-grade fuel F23G; grates F23H; feeding solid fuel to combustion apparatus F23K; constructional details of combustion chambers not otherwise provided for F23M; domestic apparatus F24; central heating boilers F24D; package boilers F24H)

F 23 C

COMBUSTION APPARATUS USING FLUENT FUEL (combustion apparatus for solid fuel only F23B; burners F23D; constructional details of combustion chambers not otherwise provided for F23M; combustion chambers for generating combustion products of high pressure or high velocity F23R)

F 23 D

BURNERS (generating combustion products of high pressure or high velocity F23R)

F 23 G

CREMATION FURNACES; CONSUMING WASTE BY COMBUSTION

F 23 H

GRATES (inlets for fluidisation air for fluidised bed combustion apparatus F23C 10/20); CLEANING OR RAKING GRATES

F 23 J

REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (precipitating dust from flue gases B01D; composition of fuels C10; combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G 7/06)

F 23 K

FEEDING FUEL TO COMBUSTION APPARATUS (fuel feeders specially adapted for fluidised bed combustion apparatus F23C 10/22; regulating or controlling combustion F23N)

F 23 L

AIR SUPPLY; DRAUGHT-INDUCING; SUPPLYING NON-COMBUSTIBLE LIQUID OR GAS (air-supply arrangements for combustion apparatus using fluent fuel, e.g. fluidised bed combustion apparatus, F23C; dampers or throat restrictors for open fire-places F24; air inlet valves for open fire fronts F24)

F 23 M

CONSTRUCTIONAL DETAILS OF COMBUSTION CHAMBERS, NOT OTHERWISE PROVIDED FOR (construction or support of tube walls for steam boilers F22B; generating combustion products of high pressure or high velocity F23R)

F 23 N

REGULATING OR CONTROLLING COMBUSTION (control devices specially adapted for fluidised bed combustion apparatus F23C 10/28; condition responsive controls for regulating combustion in domestic stoves with open fires for solid fuel F24B 1/187)

F 23 Q

IGNITION (devices for igniting matches A24F; explosive or thermic compositions C06B; chemical igniters C06C; devices or installations peculiar to internal-combustion engines, except glowing plugs, F02P); 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 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; using such products for specific purposes, see the relevant classes for the purposes)