CPC Definition - Subclass F23M
This place covers:
- Constructional details of combustion chambers, including accessories and peripheral devices such as for example lining, cooling, baffles for creating special flow path, doors, heat storage means independently of the type of the fuel which is burned.
- Safety measures.
- Noise reduction means.
Attention is drawn to the following places, which may be of interest for search:
When classifying in this subclass, add also codes F23M 2900/05001-F23M 2900/13004.
Codes F23M 2700/00-F23M 2700/008 are not used.
In this place, the following terms or expressions are used with the meaning indicated:
Air | a mixture of gases containing free oxygen and able to promote or support combustion |
Primary air | air supplied to the burning fuel in order to liberate combustible gases |
Secondary air | air supplied to the combustible gases liberated by the primary air in order to complete their combustion. The term "secondary air" covers "tertiary air" etc. |
Ash | means any solid combustion residues, for example remaining in the fuel bed or suspended in the flue gases |
Burner | a device by which fluid fuel or solid fuel suspended in air is passed to a combustion space where it burns to produce a self-supporting flame |
Combustion | means the direct combination of oxygen gas, e.g. in air, and a burnable substance |
Combustion chamber | a chamber in which fuel is burned to establish a self-supporting fire or flame and which surrounds that fire or flame |
Combustion zone | the part of the apparatus where the reaction takes place between air and fuel |
Firebridge | a low wall separating the fuel bed from adjacent flue gas passages in apparatus for combustion of solid fuel, for example in reverberatory furnaces or fire-tube boilers |
Flue gases | any gaseous products of combustion |
Grate | a perforated surface, e.g. a grid, which supports or delimits a bed of burning fuel and serves to supply primary air |
In patent documents, the following words/expressions are often used with the meaning indicated:
"boiler" | "combustion apparatus". |
"burner" | "combustion apparatus". |
Attention is drawn to the following places, which may be of interest for search:
Casings characterised by the shape of the bricks or blocks used | |
Support for linings | |
Ceramic materials | |
Construction or support of tube walls for steam boilers | |
Casings, linings, or walls of heat-treatment chambers of ovens, kilns, or retorts |
Attention is drawn to the following places, which may be of interest for search:
Ceramic materials |
Attention is drawn to the following places, which may be of interest for search:
Doors in general | |
Doors for flues or smoke-boxes |
This place does not cover:
Baffles or deflectors for air or combustion products structurally associated with burners |
Attention is drawn to the following places, which may be of interest for search:
Interconnection of water-tubes in boilers for fluid flow | |
Controlling combustion using gas detectors | |
Safety arrangements obtained by means of controlling combustion | |
Alarm systems |
Attention is drawn to the following places, which may be of interest for search:
Attention is drawn to the following places, which may be of interest for search:
Alarm systems in general |