F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
 F01 - 
F04
Subsection index
MACHINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF04C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF04B
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
ENGINES
positive displacement
rotary or oscillating piston
liquid and elastic fluid or elastic fluidF01C
liquid onlyF03C
reciprocating piston or other
liquid and elastic fluid or elastic fluidF01B
liquid onlyF03C
non-positive displacement
liquid and elastic fluid or elastic fluidF01D
liquid onlyF03B
PUMPS
positive displacement
rotary or oscillating pistonF04C
reciprocating piston or otherF04B
non-positive displacementF04D
  
LIGHTING; HEATING
 F23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
 F23

Note(s)

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.

 F23D
BURNERS (generating combustion products of high pressure or high velocity F23R)
 F23D
Subclass index
BURNERS FOR PULVERULENT FUEL 1/00
BURNERS FOR COMBUSTION OF A LIQUID
Using capillary action 3/00
Using fuel evaporation; direct spraying action 5/00; 11/00
Using fuel impingement on a surface 7/00, 9/00
BURNERS FOR COMBUSTION OF A GAS 14/00
BURNERS FOR COMBUSTION OF GASEOUS OR LIQUID OR PULVERULENT FUEL 17/00
OTHER BURNERS 21/00
ASSEMBLIES OF TWO OR MORE BURNERS 23/00
P:20 F23D 1/00
Burners for combustion of pulverulent fuel (arrangement or mounting of burners F23C 5/00)
 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
 F23D 3/00 - 
F23D 11/00
Combustion of a liquid
P:60 F23D 3/00
Burners using capillary action
 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
 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)
 F23D 3/18
·  ·  Details of wick burners
 F23D 3/20
·  ·  ·  Flame spreaders
 F23D 3/22
·  ·  ·  Devices for mixing evaporated fuel with air
 F23D 3/24
·  ·  ·  Carriers for wicks
 F23D 3/26
·  ·  ·  ·  Safety devices thereon
 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
P:70 F23D 5/00
Burners in which liquid fuel evaporates in the combustion space, with or without chemical conversion of evaporated fuel
 F23D 5/02
·  the liquid forming a pool, e.g. bowl-type evaporators, dish-type evaporators
 F23D 5/04
·  ·  Pot-type evaporators, i.e. using a partially-enclosed combustion space
 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
 F23D 5/12
·  Details
 F23D 5/14
·  ·  Maintaining predetermined amount of fuel in evaporator
 F23D 5/16
·  ·  Safety devices
 F23D 5/18
·  ·  Preheating devices
P:50 F23D 7/00
Burners in which drops of liquid fuel impinge on a surface
P:40 F23D 9/00
Burners in which a stream of liquid fuel impinges intermittently on a hot surface
P:30 F23D 11/00
Burners using a direct spraying action of liquid droplets or vaporised liquid into the combustion space (spraying in general B05B, B05D)
 F23D 11/02
·  the combustion space being a chamber substantially at atmospheric pressure
 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
 F23D 11/10
·  the spraying being induced by a gaseous medium, e.g. water vapour
 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
 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
 F23D 11/24
·  by pressurisation of the fuel before a nozzle through which it is sprayed by a substantial pressure reduction into a space
 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
 F23D 11/34
·  by ultrasonic means
 F23D 11/36
·  Details
 F23D 11/38
·  ·  Nozzles (nozzles in general B05B); Cleaning devices therefor
 F23D 11/40
·  ·  Mixing tubes; Burner heads
 F23D 11/42
·  ·  Starting devices (igniting F23Q)
 F23D 11/44
·  ·  Preheating devices; Vaporising devices
 F23D 11/46
·  ·  Devices on the vaporiser for controlling the feeding of the fuel
   
P:80 F23D 14/00
Burners for combustion of a gas, e.g. of a gas stored under pressure as a liquid  [4]
 F23D 14/02
·  Premix gas burners, i.e. in which gaseous fuel is mixed with combustion air upstream of the combustion zone  [4]
 F23D 14/04
·  ·  induction type, e.g. Bunsen burner  [4]
 F23D 14/06
·  ·  ·  with radial outlets at the burner head  [4]
 F23D 14/08
·  ·  ·  with axial outlets at the burner head  [4]
 F23D 14/10
·  ·  ·  with elongated tubular burner head  [4]
 F23D 14/12
·  Radiant burners  [4]
 F23D 14/14
·  ·  using screens or perforated plates  [4]
 F23D 14/16
·  ·  using permeable blocks  [4]
 F23D 14/18
·  ·  using catalysis for flameless combustion  [4]
 F23D 14/20
·  Non-premix gas burners, i.e. in which gaseous fuel is mixed with combustion air on arrival at the combustion zone (F23D 14/30-F23D 14/44 take precedence)  [4]
 F23D 14/22
·  ·  with separate air and gas feed ducts, e.g. with ducts running parallel or crossing each other  [4]
 F23D 14/24
·  ·  ·  at least one of the fluids being submitted to a swirling motion  [4]
 F23D 14/26
·  with provision for a retention flame (pilot flame igniters F23Q 9/00)  [4]
 F23D 14/28
·  in association with a gaseous fuel source, e.g. acetylene generator, or a container for liquefied gas  [4]
 F23D 14/30
·  Inverted burners, e.g. for illumination  [4]
 F23D 14/32
·  using a mixture of gaseous fuel and pure oxygen or oxygen-enriched air (F23D 14/38 takes precedence)  [4]
 F23D 14/34
·  Burners specially adapted for use with means for pressurising the gaseous fuel or the combustion air (F23D 14/38 takes precedence)  [4]
 F23D 14/36
·  ·  in which the compressor and burner form a single unit  [4]
 F23D 14/38
·  Torches, e.g. for cutting, brazing, welding or heating (nozzles F23D 14/48)  [4]
 F23D 14/40
·  ·  for welding (F23D 14/44 takes precedence)  [4]
 F23D 14/42
·  ·  for cutting (F23D 14/44 takes precedence)  [4]
 F23D 14/44
·  ·  for use under water  [4]
 F23D 14/46
·  Details  [4]
 F23D 14/48
·  ·  Nozzles (for spraying or coating B05B)  [4]
 F23D 14/50
·  ·  ·  Cleaning devices therefor  [4]
 F23D 14/52
·  ·  ·  for torches; for blow-pipes  [4]
 F23D 14/54
·  ·  ·  ·  for cutting or welding metal  [4]
 F23D 14/56
·  ·  ·  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]
 F23D 14/58
·  ·  ·  characterised by the shape or arrangement of the outlet or outlets from the nozzle, e.g. of annular configuration  [4]
 F23D 14/60
·  ·  Devices for simultaneous control of gas and combustion air (regulation of combustion in general F23N)  [4]
 F23D 14/62
·  ·  Mixing devices; Mixing tubes  [4]
 F23D 14/64
·  ·  ·  with injectors  [4]
 F23D 14/66
·  ·  Preheating the combustion air or gas  [4]
 F23D 14/68
·  ·  Treating the combustion air or gas, e.g. by filtering, by moistening (in general B01)  [4]
 F23D 14/70
·  ·  Baffles or like flow-disturbing devices  [4]
 F23D 14/72
·  ·  Safety devices, e.g. operative in case of failure of gas supply (protection or supervision of pipe-line systems F17D 5/00)  [4]
 F23D 14/74
·  ·  ·  Preventing flame lift-off (F23D 14/70 takes precedence)  [4]
 F23D 14/76
·  ·  ·  Protecting flame and burner parts  [4]
 F23D 14/78
·  ·  ·  Cooling burner parts  [4]
 F23D 14/80
·  ·  ·  Selection of a non-toxic gas  [4]
 F23D 14/82
·  ·  ·  Preventing flashback or blowback (F23D 14/70 takes precedence; in gas feed lines A62C 4/02)  [4]
 F23D 14/84
·  ·  Flame spreading or otherwise shaping (F23D 14/70 takes precedence)  [4]
 F23D 17/00 - 
F23D 23/00
Other burners
P:10 F23D 17/00
Burners for combustion simultaneously or alternately of gaseous or liquid or pulverulent fuel
P:90 F23D 21/00
Burners not otherwise provided for
P:0 F23D 23/00
Assemblies of two or more burners (gas burners with provision for a retention flame F23D 14/26; arrangement or mounting of burners F23C 5/00; for industrial furnaces F27)