| IPC 7 English version |
| F23J-F23J01508 |
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| SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
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| F 23 | COMBUSTION APPARATUS; COMBUSTION PROCESSES |
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| F 23 J | REMOVAL OR TREATMENT OF COMBUSTION PRODUCTS OR COMBUSTION RESIDUES; FLUES (precipitating dust from flue gases B01D; composition of fuels C10; combustion apparatus for consuming smoke or fumes, e.g. exhaust gases, F23G 7/06) |
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| Notes |
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| (1) | This subclass covers also the cleaning of surfaces of furnace tubes, flame tubes, water tubes, flues or the like of boilers, heat-exchange or heat-transfer conduits, which surfaces are contaminated by combustion products or combustion residues. |
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| (2) | This subclass does not cover the cleaning of surfaces of boilers, heat exchange or heat-transfer conduits contaminated by other than combustion products or combustion residues, which is covered by subclass F28G. |
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| Subclass Index |
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| REMOVAL OF SOLID COMBUSTION PRODUCTS OR RESIDUES |
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| From combustion chamber |
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| From places beyond the fire |
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| TREATMENT OF COMBUSTION PRODUCTS OR RESIDUES |
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| Supply of chemicals; preventing solidification; Treating smoke or fumes |
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| FLUES, FITTINGS FOR CHIMNEYS OR FLUES |
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1/ | 00 | Removing ash, clinker, or slag from combustion chambers (devices for removal of material from the bed of fluidised bed combustion apparatus F23C 10/24) |
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1/ | 02 | . | Apparatus for removing ash, clinker, or slag from ash-pits, e.g. by employing trucks or conveyers, by employing suction devices |
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1/ | 04 | . | Hand tools, e.g. rakes, prickers, tongs |
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1/ | 06 | . | Mechanically-operated devices, e.g. clinker pushers (forming part of the grate F23H) |
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1/ | 08 | . | Liquid slag removal [3] |
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3/ | 00 | Removing solid residues from passages or chambers beyond the fire, e.g. from flues by soot blowers |
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3/ | 02 | . | Cleaning furnace tubes; Cleaning flues or chimneys (by means which do not differ materially from the cleaning of any other tube once the fire is out B08B) |
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3/ | 04 | . | Traps |
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3/ | 06 | . | Systems for accumulating residues from different parts of furnace plant |
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7/ | 00 | Arrangement of devices for supplying chemicals to fire (supplying chemicals to fire C10L) |
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9/ | 00 | Preventing premature solidification of molten combustion residues |
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11/ | 00 | Devices for conducting smoke or fumes, e.g. flues (heat insulation therefor E04B 1/94; chimneys E04H 12/28; removing cooking fumes from domestic stoves or ranges F24C 15/20) [5] |
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11/ | 02 | . | for conducting smoke or fumes originating from various locations to the outside, e.g. in locomotive sheds, in garages |
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11/ | 04 | . | in locomotives; in road vehicles; in ships |
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11/ | 06 | . | . | for conducting smoke horizontally |
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11/ | 08 | . | for portable apparatus |
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11/ | 10 | . | for tents; for log huts; for other inflammable structures |
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11/ | 12 | . | Smoke conduit systems for factories or large buildings |
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13/ | 00 | Fittings for chimneys or flues (staying, stiffening E04H; means for facilitating climbing E06C; draught-inducing apparatus associated with chimneys or flues F23L) |
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13/ | 02 | . | Linings; Jackets; Casings |
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13/ | 04 | . | Joints; Connections (pipe joints in general F16L) |
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13/ | 06 | . | Mouths; Inlet holes |
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13/ | 08 | . | Doors or covers specially adapted for smoke-boxes, flues, or chimneys (in general E06B) |
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15/ | 00 | Arrangements of devices for treating smoke or fumes (such devices per se, methods for treating smoke or fumes, see the relevant places for the treatment, e.g. B01D 53/00) |
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15/ | 02 | . | of purifiers, e.g. for removing noxious material (traps for solid residues F23J 3/04) [6] |
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15/ | 04 | . | . | using washing fluids [6] |
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15/ | 06 | . | of coolers [6] |
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15/ | 08 | . | of heaters [6] |
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