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Outline
Indent Level
Color Curly Brackets (indicating CPC extensions to IPC) References Date Revised

CPC
COOPERATIVE PATENT CLASSIFICATION
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BURNERS (generating combustion products of high pressure or high velocity F23R)
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Burners for combustion of pulverulent fuel (disposition of burners F23C)
.
{
burning a mixture of pulverulent fuel delivered as a slurry, i.e. comprising a carrying liquid (preparing slurries F23K 1/02)
}
F23D 1/02
.
Vortex burners, e.g. for cyclone-type combustion apparatus
F23D 1/04
.
Burners producing cylindrical flames without centrifugal action
F23D 1/06
.
Burners producing sheet flames
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Guide Heading:
Combustion of a liquid
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Burner using capillary action
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F23D 3/02
.
Wick burners
F23D 3/04
. .
with flame spreaders (F23D 3/12 takes precedence)
F23D 3/06
. .
Inverted wick burners, e.g. for illumination
F23D 3/08
. .
characterised by shape, construction, or material, of wick
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F23D 3/10
. .
Blue-flame burners
F23D 3/12
. . .
with flame spreaders
F23D 3/14
. . .
with mixing of air and fuel vapour in a chamber before the flame
F23D 3/16
. .
using candles (candles per se C11C)
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F23D 3/18
. .
Details of wick burners
F23D 3/20
. . .
Flame spreaders
F23D 3/22
. . .
Devices for mixing evaporated fuel with air
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F23D 3/24
. . .
Carriers for wicks
F23D 3/26
. . . .
Safety devices thereon
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F23D 3/28
. . .
Wick-adjusting devices
F23D 3/30
. . . .
directly engaging with the wick
F23D 3/32
. . . .
engaging with a tube carrying the wick
F23D 3/34
. . . .
Wick stop devices; Wick-fixing devices
F23D 3/36
. . .
Devices for trimming wicks
F23D 3/38
. . .
Devices for replacement of wicks
F23D 3/40
.
the capillary action taking place in one or more rigid porous bodies
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Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
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F23D 5/02
.
the liquid forming a pool, e.g. bowl-type evaporators, dish-type evaporators
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F23D 5/04
. .
Pot-type evaporators, i.e. using a partially-enclosed combustion space
F23D 5/045
. . .
{
with forced draft
}
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F23D 5/06
.
the liquid forming a film on one or more plane or convex surfaces
F23D 5/08
. .
on cascaded surfaces
F23D 5/10
. .
on grids
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F23D 5/12
.
Details
F23D 5/123
. .
{
Inserts promoting evaporation
}
F23D 5/126
. .
{
Catalytic elements
}
F23D 5/14
. .
Maintaining predetermined amount of fuel in evaporator
F23D 5/16
. .
Safety devices
F23D 5/18
. .
Preheating devices
F23D 7/00
Burners in which drops of liquid fuel impinge on a surface
F23D 9/00
Burners in which a stream of liquid fuel impinges intermittently on a hot surface
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Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space (spraying in general B05B, B05D)
F23D 11/001
.
{
spraying nozzle combined with forced draft fan in one unit (nozzles per se F23D 11/38)
}
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F23D 11/002
.
{
spraying nozzle arranged within furnace openings (refractory bricks or blocks specially shaped for burner openings F23M 5/025)
}
F23D 11/004
. .
{
for producing radiant heat
}
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F23D 11/005
.
{
with combinations of different spraying or vaporising means
}
F23D 11/007
. .
{
combination of means covered by sub-groups F23D 11/10 and F23D 11/24
}
F23D 11/008
. .
{
combination of means covered by sub-groups F23D 5/00 and F23D 11/00
}
F23D 11/02
.
the combustion space being a chamber substantially at atmospheric pressure
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F23D 11/04
.
the spraying action being obtained by centrifugal action
F23D 11/06
. .
using a horizontal shaft
F23D 11/08
. .
using a vertical shaft
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F23D 11/10
.
the spraying being induced by a gaseous medium, e.g. water vapour
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F23D 11/101
. .
{
medium and fuel meeting before the burner outlet
}
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F23D 11/102
. . .
{
in an internal mixing chamber
}
F23D 11/103
. . . .
{
with means creating a swirl inside the mixing chamber
}
F23D 11/104
. . .
{
intersecting at a sharp angle, e.g. Y-jet atomiser
}
F23D 11/105
. . .
{
at least one of the fluids being submitted to a swirling motion
}
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F23D 11/106
. .
{
medium and fuel meeting at the burner outlet
}
F23D 11/107
. . .
{
at least one of both being subjected to a swirling motion
}
F23D 11/108
. .
{
medium and fuel intersecting downstream of the burner outlet
}
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F23D 11/12
. .
characterised by the shape or arrangement of the outlets from the nozzle
F23D 11/14
. . .
with a single outlet, e.g. slit
F23D 11/16
. .
in which an emulsion of water and fuel is sprayed
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F23D 11/18
. .
the gaseous medium being water vapour generated at the nozzle
F23D 11/20
. . .
the water vapour being superheated
F23D 11/22
. .
the gaseous medium being vaporised fuel, e.g. for a soldering lamp,
{
or other gaseous fuel
}
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F23D 11/24
.
by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
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F23D 11/26
. .
with provision for varying the rate at which the fuel is sprayed
F23D 11/28
. . .
with flow-back of fuel at the burner, e.g. using by-pass
F23D 11/30
. . .
with return feed of uncombusted sprayed fuel to reservoir
F23D 11/32
.
by electrostatic means
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F23D 11/34
.
by ultrasonic means
{
or other kinds of vibrations
}
F23D 11/345
. .
{
with vibrating atomiser surfaces
}
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F23D 11/36
.
Details
{
e.g. burner cooling means, noise reduction means
}
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F23D 11/38
. .
Nozzles (nozzles in general B05B); Cleaning devices therefor
F23D 11/383
. . .
{
with swirl means
}
F23D 11/386
. . .
{
Nozzle cleaning
}
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F23D 11/40
. .
Mixing tubes [or chambers]; Burner heads
F23D 11/402
. . .
{
Mixing chambers downstream of the nozzle
}
F23D 11/404
. . .
{
Flame tubes (not forming part of the burner F23M 9/06)
}
F23D 11/406
. . .
{
Flame stabilising means, e.g. flame holders
}
F23D 11/408
. . .
{
Flow influencing devices in the air tube
}
. .
Starting devices (igniting F23Q)
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F23D 11/44
. .
Preheating devices; Vaporising devices (vaporising devices per se F23K 5/22)
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F23D 11/441
. . .
{
Vaporizing devices incorporated with burners
}
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F23D 11/443
. . . .
{
heated by the main burner flame
}
F23D 11/445
. . . . .
{
the flame and the vaporiser not coming into direct contact
}
F23D 11/446
. . . .
{
heated by an auxiliary flame
}
F23D 11/448
. . . .
{
heated by electrical means
}
F23D 11/46
. .
Devices on the vaporiser for controlling the feeding of the fuel
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F23D 14/00
Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid
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F23D 14/02
.
Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone
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F23D 14/04
. .
induction type, e.g. Bunsen burner, (
{
atmospheric or aerated gas burner
}
)
F23D 14/045
. . .
{
with a plurality of burner bars assembled together, e.g. in a grid-like arrangement
}
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F23D 14/06
. . .
with radial outlets at the burner head
F23D 14/065
. . . .
{
with injector axis inclined to the burner head axis
}
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F23D 14/08
. . .
with axial outlets at the burner head
F23D 14/085
. . . .
{
with injector axis inclined to the burner head axis
}
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F23D 14/10
. . .
with elongated tubular burner head
F23D 14/105
. . . .
[N. with injector axis parallel to the burner head axis]
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F23D 14/12
.
Radiant burners
F23D 14/125
. .
{
heating a wall surface to incandescence
}
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F23D 14/14
. .
using screens or perforated plates
F23D 14/145
. . .
{
the burner plate being a screen
}
F23D 14/16
. .
using permeable blocks
F23D 14/18
. .
using catalysis for flameless combustion
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.
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)
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F23D 14/22
. .
with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other
F23D 14/24
. . .
at least one of the fluids being submitted to a swirling motion
.
with provision for a retention flame (pilot flame igniters F23Q 9/00)
F23D 14/28
.
in association with a gaseous fuel source, e.g. acetylene generator, or a container for liquefied gas
F23D 14/30
.
Inverted burners, e.g. for illumination
.
using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D 14/38 takes precedence)
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.
Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air (F23D 14/38 takes precedence)
F23D 14/36
. .
in which the compressor and burner form a single unit
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.
Torches, e.g. for cutting, brazing, welding or heating (
{
nozzles for torches F23D 14/52
}
)
. .
for welding (F23D 14/44 takes precedence)
. .
for cutting (F23D 14/44 takes precedence)
F23D 14/44
. .
for use under water
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F23D 14/46
.
Details
{
e.g. noise reduction means
}
. .
{
for torches (F23D 14/52 takes precedence)
}
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F23D 14/48
. .
Nozzles (
{
injectors for mixing devices F23D 14/64
}
; for spraying or coating B05B)
F23D 14/50
. . .
Cleaning devices therefor
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F23D 14/52
. . .
for torches; for blow-pipes
F23D 14/54
. . . .
for cutting or welding metal
. . .
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)
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F23D 14/58
. . .
characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration
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F23D 14/583
. . . .
{
of elongated shape, e.g. slits
}
F23D 14/586
. . . . .
{
formed by a set of sheets, strips, ribbons or the like
}
. .
Devices for simultaneous control of gas and combustion air (regulation of combustion in general F23N)
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. .
Mixing devices; Mixing tubes
F23D 14/64
. . .
with injectors
F23D 14/66
. .
Preheating the combustion air or gas
. .
Treating the combustion air or gas, e.g. by filtering, by moistening (in general B01)
. .
Baffles or like flow-disturbing devices
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. .
Safety devices, e.g. operative in case of failure of gas supply (protection or supervision of pipe-line systems F17D 5/00)
F23D 14/725
. . .
{
Protection against flame failure by using flame detection devices (pilot flame igniters with interlock with main fuel supply F23Q 9/08)
}
. . .
Preventing flame lift-off (F23D 14/70 takes precedence)
F23D 14/76
. . .
Protecting flame and burner parts
F23D 14/78
. . .
Cooling burner parts
F23D 14/80
. . .
Selection of a non-toxic gas
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. . .
Preventing flashback or blowback (F23D 14/70 takes precedence;
{
by use of a retention flame F23D 14/26
}
; in gas feed lines A62C 4/02)
F23D 14/825
. . . .
{
using valves
}
. .
Flame spreading or otherwise shaping (F23D 14/70 takes precedence)
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Guide Heading:
Other burners
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F23D 17/00
Burners for combustion conjointly or alternatively of gaseous or liquid or pulverulent fuel
F23D 17/002
.
{
gaseous or liquid fuel
}
F23D 17/005
.
{
gaseous or pulverulent fuel
}
F23D 17/007
.
{
liquid or pulverulent fuel
}
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Burners not otherwise provided for
NOTE
-
{
combinations of spraying or vaporising means covered by sub-groups F23D 5/00 and F23D 21/00 are classified in F23D 11/008
}

F23D 21/005
.
{
specially adapted for use in particular heating operations
}
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)
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F23D 99/00
Subject matter not provided for in other groups of this subclass
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F23D 99/003
.
{
specially adapted for use in particular heating operations
}
F23D 99/006
. .
{
for heating liquids, e.g. for vaporising, for concentrating
}

F23D 2200/00
Burners for fluid fuel
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F23D 2201/00
Burners adapted for particulate solid or pulverulent fuels
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F23D 2201/10
.
Nozzle tips
F23D 2201/101
. .
tiltable
F23D 2201/20
.
Fuel flow guiding devices
F23D 2201/30
.
Wear protection
F23D 2202/00
Liquid fuel burners
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F23D 2203/00
Gaseous fuel burners
F23D 2203/002
.
Radiant burner mixing tubes
F23D 2203/005
.
Radiant burner heads
F23D 2203/007
.
Mixing tubes, air supply regulation
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F23D 2203/10
.
Flame diffusing means
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F23D 2203/101
. .
characterised by surface shape
F23D 2203/1012
. . .
tubular
F23D 2203/1015
. . .
spherical
F23D 2203/1017
. . .
curved
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F23D 2203/102
. .
using perforated plates
F23D 2203/1023
. . .
with specific free passage areas
F23D 2203/1026
. . .
with slotshaped openings
F23D 2203/103
. .
using screens
F23D 2203/104
. .
Grids, e.g. honeycomb grids
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F23D 2203/105
. .
Porous plates
F23D 2203/1055
. . .
with a specific void range
F23D 2203/106
. .
Assemblies of different layers
F23D 2203/107
. .
coated with catalysts
F23D 2203/108
. .
with stacked sheets or strips forming the outlets
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F23D 2204/00
Burners adapted for simultaneous or alternative combustion having more than one fuel supply
F23D 2204/10
.
gaseous and liquid fuel
F23D 2204/20
.
gaseous and pulverulent fuel
F23D 2204/30
.
liquid and pulverulent fuel
F23D 2205/00
Assemblies of two or more burners, irrespective of fuel type
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F23D 2206/00
Burners for specific applications
F23D 2206/0005
.
Liquid fuel burners adapted for use in locomotives
F23D 2206/001
.
Liquid fuel burners adapted for use in automobile steam boilers
F23D 2206/0015
.
Gas burners for use in retort furnaces
F23D 2206/0021
.
Gas burners for use in furnaces of the reverberatory, muffle or crucible type
F23D 2206/0026
.
Vapour burners adapted for use in illumination devices
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F23D 2206/0031
.
Liquid fuel burners adapted for use in welding lamps
F23D 2206/0036
. .
Liquid fuel burners adapted for use in welding and cutting metals
F23D 2206/0042
.
Vapour burners for illumination by radiation, with vaporiser heated by an auxiliary flame
F23D 2206/0047
.
Vapour burners for illumination by radiation, with vaporiser heated by the main flame
F23D 2206/0052
.
Vapour burners for illumination by radiation, with vaporiser heated by conduction
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F23D 2206/0057
.
Liquid fuel burners adapted for use in illumination and heating
F23D 2206/0063
. .
Catalytic burners adapted for use in illumination and heating
F23D 2206/0068
.
Gas burners for illumination with slot type nozzles
F23D 2206/0073
.
Gas burners for illumination with Argand nozzles
F23D 2206/0078
.
Gas burners adapted for use in lamps with preheated air
F23D 2206/0084
.
Gas burners adapted for use in ceiling and wagon lamps
F23D 2206/0089
.
Gas burners for illumination using acetylene as a fuel
F23D 2206/0094
.
Gas burners adapted for use in illumination and heating
F23D 2206/10
.
Turbines
F23D 2207/00
Ignition devices associated with burner
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F23D 2208/00
Control devices associated with burners
F23D 2208/005
.
Controlling air supply in radiant gas burners
F23D 2208/10
.
Sensing devices
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F23D 2209/00
Safety arrangements
F23D 2209/10
.
Flame flashback
F23D 2209/20
.
Flame lift-off / stability
F23D 2209/30
.
Purging
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F23D 2210/00
Noise abatement
F23D 2210/101
.
using noise dampening material
F23D 2211/00
Thermal dilatation prevention or compensation
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F23D 2212/00
Burner material specifications
F23D 2212/005
.
Radiant gas burners made of specific materials, e.g. rare earths
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F23D 2212/10
.
ceramic
F23D 2212/101
. .
Foam, e.g. reticulated
F23D 2212/103
. .
Fibres
F23D 2212/105
. .
Particles
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F23D 2212/20
.
metallic
F23D 2212/201
. .
Fibres
F23D 2212/203
. .
Particles
F23D 2213/00
Burner manufacture specifications
F23D 2214/00
Cooling
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F23D 2700/00
TBD
F23D 2700/001
.
Air supply for wick burners
F23D 2700/002
.
Wick burners without flame spreaders or burner hood
F23D 2700/003
.
Wick burners with flame spreaders or burner hood
F23D 2700/004
.
Inverted wick burners, wick burners using preheated air
F23D 2700/005
.
Wick burners using alcohol as a fuel
F23D 2700/006
.
Wick burners using oil as a fuel
F23D 2700/009
.
Details of blue flame wick burners
F23D 2700/01
.
Blue flame burners without flame spreader or burner hood
F23D 2700/011
.
Blue flame burners with flame spreader or burner hood without a bead at the wick carrying tube
F23D 2700/012
.
Blue flame burners with flame spreader or burner hood with a bead at the wick carrying tube
F23D 2700/013
.
Blue flame burners with flame on one side only without a bead at the wick carrying tube
F23D 2700/014
.
Blue flame burners with flame on one side only and a bead at the wick carrying tube
F23D 2700/015
.
Tubes carrying the wick
F23D 2700/016
.
Safety devices for wick carrying tubes
F23D 2700/017
.
Wick adjusting devices directly engaging the wick
F23D 2700/018
.
Wick adjusting devices engaging the tube carrying the wick
F23D 2700/019
.
Wick stop devices and wick fixing devices
F23D 2700/02
.
Devices for mounting the wick to the carrier
F23D 2700/021
.
Burners in which the gas produced in the wick is not burned instantaneously
F23D 2700/022
.
Burners using carburetted gas
F23D 2700/023
.
Gasifying and evaporating devices
F23D 2700/024
.
Nozzles and cleanig devices therefor
F23D 2700/025
.
Mixing tubes and burner heads
F23D 2700/026
.
Preheating devices, starting devices
F23D 2700/027
.
Vaporisers with devices for controlling the feeding of the fuel
F23D 2700/03
.
Alcohol vapour burners
F23D 2700/031
.
Vapour burners where the vaporiser is heated by an auxiliary flame
F23D 2700/032
.
Vapour burners where the vaporiser is heated by the main flame itself
F23D 2700/033
.
Vapour burners where the vaporiser is heated by conduction
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F23D 2900/00
Special features of, or arrangements for burners using fluid fuels or solid fuels suspended in a carrier gas
F23D 2900/00001
.
local catalytic coatings applied to burner surfaces
F23D 2900/00002
.
Cleaning burner parts, e.g. burner tips
F23D 2900/00003
.
Fuel or fuel-air mixtures flow distribution devices upstream of the outlet
F23D 2900/00004
.
Burners specially adapted for generating high luminous flames, e.g. yellow for fuel-rich mixtures
F23D 2900/00006
.
Liquid fuel burners using pure oxygen or O2-enriched air as oxidant (for gaseous fuels F23D 14/32)
F23D 2900/00008
.
Burner assemblies with diffusion and premix modes, i.e. dual mode burners
F23D 2900/00011
.
Burner with means for propagating the flames along a wall surface
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F23D 2900/00012
.
Liquid or gas fuel burners with flames spread over a flat surface, either premix or non-premix type, e.g. "Flächenbrenner"
F23D 2900/00013
. .
with means for spreading the flame in a fan or fishtail shape over a melting bath
F23D 2900/00014
.
Pilot burners specially adapted for ignition of main burners in furnaces or gas turbines
F23D 2900/00015
.
Pilot burners specially adapted for low load or transient conditions, e.g. for increasing stability
F23D 2900/00016
.
Preventing or reducing deposit build-up on burner parts, e.g. from carbon
F23D 2900/00017
.
Assembled burner modules
F23D 2900/00018
.
Means for protecting parts of the burner, e.g. ceramic lining outside of the flame tube
F23D 2900/00019
.
Outlet manufactured from knitted fibres
F23D 2900/01001
.
Pulverised solid fuel burner with means for swirling the fuel-air mixture
F23D 2900/03081
.
Catalytic wick burners
F23D 2900/03082
.
Wick made of specific material, e.g. ceramic
F23D 2900/05001
.
Burner using gel type fuel
F23D 2900/05002
.
Use of porous members to convert liquid fuel into vapor
F23D 2900/11001
.
Impinging-jet injectors or jet impinging on a surface
F23D 2900/11002
.
Liquid fuel burners with more than one nozzle
F23D 2900/11101
.
Pulverising gas flow impinging on fuel from pre-filming surface, e.g. lip atomizers
F23D 2900/11401
.
Flame intercepting baffles forming part of burner head
F23D 2900/11402
.
Airflow diaphragms at burner nozzle
F23D 2900/11403
.
Flame surrounding tubes in front of burner nozzle
Collapse
F23D 2900/14
.
Special features of gas burners
F23D 2900/14001
. .
Sealing or support of burner plate borders
F23D 2900/14002
. .
of premix or non premix types, specially adapted for the combustion of low heating value (LHV) gas
F23D 2900/14003
. .
with more than one nozzle
F23D 2900/14004
. .
with radially extending gas distribution spokes
F23D 2900/14005
. .
Rotary gas burner
F23D 2900/14021
. .
Premixing burners with swirling or vortices creating means for fuel or air
F23D 2900/14041
. .
Segmented or straight line assembly of burner bars
F23D 2900/14042
. .
Star shaped assembly of burner bars or arms
F23D 2900/14061
. .
for cooking ranges having a coated burner cap
F23D 2900/14062
. .
for cooking ranges having multiple flame rings
F23D 2900/14063
. .
for cooking ranges having one flame ring fed by multiple venturis
F23D 2900/14064
. .
Burner heads of non circular shape
Collapse
F23D 2900/1412
. .
for radiant burners
F23D 2900/14121
. . .
with radiation intensifying means
F23D 2900/14122
. . .
with extra radiation grids, e.g. strips or rods
F23D 2900/14123
. . .
with radiation intensifying perforated plates
F23D 2900/14124
. . .
cooperating with refractory wall surfaces
F23D 2900/14125
. . .
with extra radiation screens, e.g. wires, threads or gauzes
F23D 2900/14181
. . .
Catalytic type with carbon containing radiating surface
F23D 2900/14241
. .
Post-mixing with swirling means
F23D 2900/14381
. .
Single operating member opening and closing fuel and oxidant supply valves in torches
F23D 2900/14481
. .
Burner nozzles incorporating flow adjusting means
F23D 2900/14482
. .
Burner nozzles incorporating a fluidic oscillator
F23D 2900/14581
. .
with outlets consisting of a bed of irregular particles, e.g. glass
F23D 2900/14582
. .
with outlets consisting of layers of spherical particles
F23D 2900/14641
. .
with gas distribution manifolds or bars provided with a plurality of nozzles
F23D 2900/14642
. .
with jet mixers with more than one gas injection nozzles or orifices for a single mixing tube
F23D 2900/14681
. .
Adding steam or water vapor to primary or secondary combustion air
F23D 2900/14701
. .
Swirling means inside the mixing tube or chamber to improve premixing
Collapse
F23D 2900/21
.
Burners specially adapted for a particular use
F23D 2900/21001
. .
for use in blast furnaces
F23D 2900/21002
. .
for use in car heating systems
F23D 2900/21003
. .
for heating or re-burning air or gas in a duct
F23D 2900/21004
. .
for use in gas fed fireplaces
F23D 2900/21005
. .
for flame deposition, e.g. FHD, flame hydrolysis deposition
F23D 2900/21006
. .
for heating a catalyst in a car
F23D 2900/21007
. .
for producing soot, e.g. nano particle soot
This page is owned by Office of Patent Classification.
Last Modified: 10/10/2013