F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
LIGHTING AND HEATING
 F23
COMBUSTION APPARATUS; COMBUSTION PROCESSES
 F23

Note(s)

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

  1. "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 provided for in Section C or in sub-class F24J.
  2. "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.
  3. "Burner" means a device by which fluent fuel is passed to a combustion space where it burns to produce a self-supporting flame.
  4. "Air" means a mixture of gases containing free oxygen and able to promote or support combustion.

 F23C
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)
 F23C 1/00
Combustion apparatus for burning two or more kinds of fuel simultaneously or alternatively, at least one kind of fuel being fluent (with after-burning arrangements F23C 9/00; one kind being for ignition of the other F23Q)
 F23C 1/02
·  lump or liquid fuel
 F23C 1/04
·  lump or gaseous fuel
 F23C 1/06
·  lump or pulverulent fuel
 F23C 1/08
·  liquid or gaseous fuel
 F23C 1/10
·  liquid or pulverulent fuel
 F23C 1/12
·  gaseous or pulverulent fuel
 F23C 3/00
Combustion apparatus characterised by the shape of the combustion chamber
 F23C 3/02
( transferred to F23C 11/04 )
 F23C 5/00
Disposition of burners with respect to the combustion chamber or to one another; Mounting of burners in combustion apparatus (F23C 1/00, F23C 11/04 take precedence)
 F23C 5/02
·  Structural details of mounting
 F23C 5/04
( transferred to F23L 15/00 )
 F23C 5/06
·  ·  Provision for adjustment of burner position during operation
 F23C 5/08
·  Disposition of burners
 F23C 5/10 - 
F23C 5/12
( covered by F23C 5/08 )
 F23C 5/14
·  ·  to obtain a single flame of concentrated or substantially planar form, e.g. pencil or sheet flame (F23C 5/32 takes precedence)
 F23C 5/16
( covered by F23C 5/14 )
 F23C 5/18
( transferred to F23C 5/32 )
 F23C 5/20 - 
F23C 5/22
( covered by F23C 5/14 )
 F23C 5/24
·  ·  to obtain a loop flame
 F23C 5/26
( covered by F23C 5/24 )
 F23C 5/28
·  ·  to obtain flames in opposing directions, e.g. impacting flames
 F23C 5/30
( covered by F23C 5/28 )
 F23C 5/32
·  ·  to obtain rotating flames, i.e. flames moving helically or spirally  [3]
 F23C 6/00
Combustion apparatus characterised by the combination of two or more combustion chambers  [3]
 F23C 6/02
·  in parallel arrangement  [3]
 F23C 6/04
·  in series connection (consuming smoke or fumes in separate combustion apparatus F23G 7/06)  [3]
 F23C 7/00
Air-supply arrangements (in general F23L)
 F23C 7/02
·  Disposition of air supply not passing through burner (to obtain a cyclonic tapering flame when burning pulverulent fuel F23C 5/32)
 F23C 7/04
·  ·  to obtain maximum heat transfer to wall of combustion chamber
 F23C 7/06
·  ·  for heating the incoming air (arrangements of regenerators and recuperators F23L 15/00)
 F23C 7/08
·  ·  ·  indirectly by a secondary fluid other than the combustion products
 F23C 9/00
Combustion apparatus with arrangements for recycling or recirculating combustion products or flue gases
 F23C 9/02
( covered by F23C 9/00 )
 F23C 9/04
( transferred to F23C 6/04 )
 F23C 9/06
·  for completing combustion  [3]
 F23C 9/08
·  for reducing temperature in combustion chamber, e.g. for protecting walls of combustion chamber  [3]
 F23C 11/00
Other combustion apparatus using fluent fuel
 F23C 11/02
·  with fluidised bed  [3]
 F23C 11/04
·  Combustion apparatus for producing resonant combustion (for generating combustion products of high pressure or high velocity F23R)  [3]