F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
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.

 F23R
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)
 F23R 3/00
Continuous combustion chambers using liquid or gaseous fuel  [3]
 F23R 3/02
·  characterised by the air-flow or gas-flow configuration (reverse-flow combustion chambers F23R 3/54; cyclone or vortex type combustion chambers F23R 3/58)  [3]
 F23R 3/04
·  ·  Air inlet arrangements  [3]
 F23R 3/06
·  ·  ·  Arrangement of apertures along the flame tube  [3]
 F23R 3/08
·  ·  ·  ·  between annular flame tube sections, e.g. flame tubes with telescopic sections  [3]
 F23R 3/10
·  ·  ·  for primary air (F23R 3/06 takes precedence)  [3]
 F23R 3/12
·  ·  ·  ·  inducing a vortex  [3]
 F23R 3/14
·  ·  ·  ·  ·  by using swirl vanes  [3]
 F23R 3/16
·  ·  with devices inside the flame tube or the combustion chamber to influence the air or gas flow  [3]
 F23R 3/18
·  ·  ·  Flame stabilizing means, e.g. flame holders for after-burners of jet-propulsion plants  [3]
 F23R 3/20
·  ·  ·  ·  incorporating fuel injection means  [3]
 F23R 3/22
·  ·  ·  ·  movable, e.g. to an inoperative position; adjustable, e.g. self-adjusting  [3]
 F23R 3/24
·  ·  ·  ·  of the fluid-screen type  [3]
 F23R 3/26
·  ·  Controlling the air flow  [3]
 F23R 3/28
·  characterised by the fuel supply (burners per se F23D)  [3]
 F23R 3/30
·  ·  comprising fuel prevapourising devices  [3]
 F23R 3/32
·  ·  ·  being tubular  [3]
 F23R 3/34
·  ·  Feeding into different combustion zones  [3]
 F23R 3/36
·  ·  Supply of different fuels  [3]
 F23R 3/38
·  ·  comprising rotary fuel injection means  [3]
 F23R 3/40
·  characterised by the use of catalytic means  [3]
 F23R 3/42
·  characterised by the arrangement or form of the flame tubes or combustion chambers  [3]
 F23R 3/44
·  ·  Combustion chambers comprising a tubular flame tube within a tubular casing (reverse-flow combustion chambers F23R 3/54)  [3]
 F23R 3/46
·  ·  Combustion chambers comprising an annular arrangement of flame tubes within a common annular casing or within individual casings  [3]
 F23R 3/48
·  ·  ·  Flame tube interconnectors, e.g. cross-over tubes  [3]
 F23R 3/50
·  ·  Combustion chambers comprising an annular flame tube within an annular casing (toroidal combustion chambers F23R 3/52)  [3]
 F23R 3/52
·  ·  Toroidal combustion chambers  [3]
 F23R 3/54
·  ·  Reverse-flow combustion chambers  [3]
 F23R 3/56
·  ·  Combustion chambers having rotary flame tubes  [3]
 F23R 3/58
·  ·  Cyclone or vortex type combustion chambers  [3]
 F23R 3/60
·  ·  Support structures; Attaching or mounting means  [3]
 F23R 5/00
Continuous combustion chambers using solid or pulverulent fuel  [3]
 F23R 7/00
Intermittent or explosive combustion chambers  [3]