|  | 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: "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 Fulltext... Hierarchy... Expanded...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.

|  | F23C |
COMBUSTION APPARATUS USING FLUENT FUEL (combustion apparatus for solid fuel only Fulltext... Hierarchy... Expanded...F23B; burners Fulltext... Hierarchy... Expanded...F23D; constructional details of combustion chambers not otherwise provided for Fulltext... Hierarchy... Expanded...F23M; combustion chambers for generating combustion products of high pressure or high velocity Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F23C 9/00; one kind being for ignition of the other Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...F23C 1/00, Fulltext... Hierarchy... Expanded...F23C 11/04 take precedence)

|  | F23C 5/02 |
· | Structural details of mounting

|  | F23C 5/04 |
( transferred to Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F23C 5/08 )

|  | F23C 5/14 |
· · | to obtain a single flame of concentrated or substantially planar form, e.g. pencil or sheet flame (Fulltext... Hierarchy... Expanded...F23C 5/32 takes precedence)

|  | F23C 5/16 |
( covered by Fulltext... Hierarchy... Expanded...F23C 5/14 )

|  | F23C 5/18 |
( transferred to Fulltext... Hierarchy... Expanded...F23C 5/32 )

|  | F23C 5/20 - F23C 5/22 |
( covered by Fulltext... Hierarchy... Expanded...F23C 5/14 )

|  | F23C 5/24 |
· · | to obtain a loop flame

|  | F23C 5/26 |
( covered by Fulltext... Hierarchy... Expanded...F23C 5/24 )

|  | F23C 5/28 |
· · | to obtain flames in opposing directions, e.g. impacting flames

|  | F23C 5/30 |
( covered by Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F23G 7/06) [3]

|  | F23C 7/00 |
Air-supply arrangements (in general Fulltext... Hierarchy... Expanded...F23L)

|  | F23C 7/02 |
· | Disposition of air supply not passing through burner (to obtain a cyclonic tapering flame when burning pulverulent fuel Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F23C 9/00 )

|  | F23C 9/04 |
( transferred to Fulltext... Hierarchy... Expanded...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 Fulltext... Hierarchy... Expanded...F23R) [3]