IPC 7 English version F23D-F23D 23/00

IPC ⁷ English version

F23D-F23D02300

SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 23

COMBUSTION APPARATUS; COMBUSTION PROCESSES

F 23 D

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

Subclass Index

BURNERS FOR PULVERULENT FUEL

F23D 1/00

BURNERS FOR COMBUSTION OF A LIQUID

Using capillary action

F23D 3/00

Using fuel evaporation; direct spraying action

F23D 5/00; F23D 11/00

Using fuel impingement on a surface

F23D 7/00, F23D 9/00

BURNERS FOR COMBUSTION OF A GAS

F23D 14/00

BURNERS FOR COMBUSTION OF GASEOUS OR LIQUID OR PULVERULENT FUEL

F23D 17/00

OTHER BURNERS

F23D 21/00

ASSEMBLIES OF TWO OR MORE BURNERS

F23D 23/00

Burners for combustion of pulverulent fuel (disposition of burners F23C)

Vortex burners, e.g. for cyclone-type combustion apparatus

Burners producing cylindrical flames without centrifugal action

Burners producing sheet flames

Combustion of a liquid

Burners using capillary action

Wick burners

with flame spreaders (F23D 3/12 takes precedence)

Inverted wick burners, e.g. for illumination

characterised by shape, construction, or material, of wick

Blue-flame burners

with flame spreaders

with mixing of air and fuel vapour in a chamber before the flame

using candles (candles per se C11C)

Details of wick burners

Flame spreaders

Devices for mixing evaporated fuel with air

Carriers for wicks

Safety devices thereon

Wick-adjusting devices

directly engaging with the wick

engaging with a tube carrying the wick

Wick stop devices; Wick-fixing devices

Devices for trimming wicks

Devices for replacement of wicks

the capillary action taking place in one or more rigid porous bodies

Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel

the liquid forming a pool, e.g. bowl-type evaporators, dish-type evaporators

Pot-type evaporators, i.e. using a partially-enclosed combustion space

the liquid forming a film on one or more plane or convex surfaces

on cascaded surfaces

on grids

Details

Maintaining predetermined amount of fuel in evaporator

Safety devices

Preheating devices

Burners in which drops of liquid fuel impinge on a surface

Burners in which a stream of liquid fuel impinges intermittently on a hot surface

11/

Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space (spraying in general B05B, B05D)

11/

the combustion space being a chamber substantially at atmospheric pressure

11/

the spraying action being obtained by centrifugal action

11/

using a horizontal shaft

11/

using a vertical shaft

11/

the spraying being induced by a gaseous medium, e.g. water vapour

11/

characterised by the shape or arrangement of the outlets from the nozzle

11/

with a single outlet, e.g. slit

11/

in which an emulsion of water and fuel is sprayed

11/

the gaseous medium being water vapour generated at the nozzle

11/

the water vapour being superheated

11/

the gaseous medium being vaporised fuel, e.g. for a soldering lamp

11/

by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space

11/

with provision for varying the rate at which the fuel is sprayed

11/

with flow-back of fuel at the burner, e.g. using by-pass

11/

with return feed of uncombusted sprayed fuel to reservoir

11/

by electrostatic means

11/

by ultrasonic means

11/

Details

11/

Nozzles (nozzles in general B05B); Cleaning devices therefor

11/

Mixing tubes; Burner heads

11/

Starting devices (igniting F23Q)

11/

Preheating devices; Vaporising devices

11/

Devices on the vaporiser for controlling the feeding of the fuel

14/

Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid [4]

14/

Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone [4]

14/

induction type, e.g. Bunsen burner [4]

14/

with radial outlets at the burner head [4]

14/

with axial outlets at the burner head [4]

14/

with elongated tubular burner head [4]

14/

Radiant burners [4]

14/

using screens or perforated plates [4]

14/

using permeable blocks [4]

14/

using catalysis for flameless combustion [4]

14/

Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone (F23D 14/30 to F23D 14/44 take precedence) [4]

14/

with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other [4]

14/

at least one of the fluids being submitted to a swirling motion [4]

14/

with provision for a retention flame (pilot flame igniters F23Q 9/00) [4]

14/

in association with a gaseous fuel source, e.g. acetylene generator, or a container for liquefied gas [4]

14/

Inverted burners, e.g. for illumination [4]

14/

using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D 14/38 takes precedence) [4]

14/

Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air (F23D 14/38 takes precedence) [4]

14/

in which the compressor and burner form a single unit [4]

14/

Torches, e.g. for cutting, brazing, welding or heating (nozzles F23D 14/48) [4]

14/

for welding (F23D 14/44 takes precedence) [4]

14/

for cutting (F23D 14/44 takes precedence) [4]

14/

for use under water [4]

14/

Details [4]

14/

Nozzles (for spraying or coating B05B) [4]

14/

Cleaning devices therefor [4]

14/

for torches; for blow-pipes [4]

14/

for cutting or welding metal [4]

14/

for spreading the flame over an area, e.g. for desurfacing of solid material, for surface hardening, for heating workpieces (scarfing by applying flames B23K 7/00) [4]

14/

characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration [4]

14/

Devices for simultaneous control of gas and combustion air (regulation of combustion in general F23N) [4]

14/

Mixing devices; Mixing tubes [4]

14/

with injectors [4]

14/

Preheating the combustion air or gas [4]

14/

Treating the combustion air or gas, e.g. by filtering, by moistening (in general B01) [4]

14/

Baffles or like flow-disturbing devices [4]

14/

Safety devices, e.g. operative in case of failure of gas supply (protection or supervision of pipe-line systems F17D 5/00) [4]

14/

Preventing flame lift-off (F23D 14/70 takes precedence) [4]

14/

Protecting flame and burner parts [4]

14/

Cooling burner parts [4]

14/

Selection of a non-toxic gas [4]

14/

Preventing flashback or blowback (F23D 14/70 takes precedence; in gas feed lines A62C 4/02) [4]

14/

Flame spreading or otherwise shaping (F23D 14/70 takes precedence) [4]

Other burners

17/

Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel

21/

Burners not otherwise provided for

23/

Assemblies of two or more burners (gas burners with provision for a retention flame F23D 14/26; disposition of burners F23C; for industrial furnaces F27)