| IPC 7 English version |
| F22-F22B02140 |
F22B 23/00 - F22B 37/78  |
|
|
|
| SECTION F – MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING |
|
| F 22 | STEAM GENERATION (chemical or physical apparatus for generating gases B01J; chemical generation of gas, e.g. under pressure, Section C; removal of combustion products or residues, e.g. cleaning of the combustion contaminated surfaces of tubes of boilers, F23J; generating combustion products of high pressure or high velocity F23R; water heaters not for steam generation F24H, F28; cleaning of internal or external surfaces of heat-transfer conduits, e.g. water tubes of boilers, F28G) |
|
| F 22 B | METHODS OF STEAM GENERATION; STEAM BOILERS (steam engine plants where engine aspects predominate F01K; domestic central-heating systems using steam F24D; heat exchange or heat transfer in general F28; generation of vapour in the cores of nuclear reactors G21) |
|
| Note |
|
| This subclass covers only methods of, or apparatus for, the generation of steam under pressure for heating or power purposes. |
|
| Subclass Index |
|
| METHODS FOR STEAM GENERATION |
|
| STEAM BOILERS |
|
| General characteristics |
|
| having drum; having furnace tube; having fire tube; having combined fire tube and water tube; having fire-box |
|
| having water tubes |
|
| auxiliary tubes |
|
| horizontal; horizontally-inclined; combined horizontally-inclined and vertical; vertical or steeply-inclined |
|
| formed of sets of spaced double-walled water tubes or of return tubes; water tubes with internally-arranged flue tubes |
|
| Special characteristics |
|
| Modifications or arrangements; details of general application |
|
| PLANTS; CONTROL SYSTEMS |
|
| General aspects of, or methods for, steam generation |
|
1/ | 00 | Methods of steam generation characterised by form of heating method (use of solar heat F24J 2/00; jackets or other cooling means in which steam is generated and which serve for cooling other apparatus, see the subclasses for such apparatus) |
|
1/ | 02 | . | by exploitation of the heat content of hot heat carriers |
|
1/ | 04 | . | . | the heat carrier being hot slag, hot residues, or heated blocks, e.g. iron blocks |
|
1/ | 06 | . | . | the heat carrier being molten; Use of molten metal, e.g. zinc, as heat transfer medium |
|
1/ | 08 | . | . | the heat carrier being steam |
|
1/ | 10 | . | . | . | released from heat accumulators |
|
1/ | 12 | . | . | . | produced by an indirect cyclic process |
|
1/ | 14 | . | . | . | coming in direct contact with water in bulk or in sprays |
|
1/ | 16 | . | . | the heat carrier being hot liquid or hot vapour, e.g. waste liquid, waste vapour |
|
1/ | 18 | . | . | the heat carrier being a hot gas, e.g. waste gas such as exhaust gas of internal-combustion engines (use of waste heat of combustion engines, in general, F02) |
|
1/ | 20 | . | using heat evolved in a solution absorbing steam; Soda steam boilers |
|
1/ | 22 | . | using combustion under pressure substantially exceeding atmospheric pressure |
|
1/ | 24 | . | . | Pressure-fired steam boilers, e.g. using turbo air compressors actuated by hot gases from boiler furnace |
|
1/ | 26 | . | . | Steam boilers of submerged-flame type, i.e. the flame being surrounded by, or impinging on, the water to be vaporised |
|
1/ | 28 | . | in boilers heated electrically |
|
1/ | 30 | . | . | Electrode boilers |
|
3/ | 00 | Other methods of steam generation |
|
3/ | 02 | . | involving the use of working media other than water |
|
3/ | 04 | . | by drop in pressure of high-pressure hot water within pressure-reducing chambers, e.g. in accumulators (steam accumulators per se F01K 1/00) |
|
3/ | 06 | . | by transformation of mechanical, e.g. kinetic, energy into heat energy |
|
3/ | 08 | . | at critical or supercritical pressure values |
|
| Kinds of steam boilers |
|
5/ | 00 | Steam boilers of drum type, i.e. without internal furnace or fire tubes, the boiler body being contacted externally by flue gas |
|
5/ | 02 | . | with auxiliary water tubes outside the boiler body |
|
5/ | 04 | . | Component parts thereof; Accessories therefor (covers or similar closure members for pressure vessels in general F16J 13/00) |
|
7/ | 00 | Steam boilers of furnace-tube type, i.e. the combustion of fuel being performed inside one or more furnace tubes built-in in the boiler body |
|
7/ | 02 | . | without auxiliary water tubes |
|
7/ | 04 | . | with auxiliary water tubes |
|
7/ | 06 | . | . | inside the furnace tube in transverse arrangement |
|
7/ | 08 | . | . | inside the furnace tube in longitudinal arrangement |
|
7/ | 10 | . | . | outside the boiler body |
|
7/ | 12 | . | with auxiliary fire tubes; Arrangement of header boxes providing for return diversion of flue gas flow |
|
7/ | 14 | . | with both auxiliary water tubes and auxiliary fire tubes |
|
7/ | 16 | . | Component parts thereof; Accessories therefor, e.g. stay-bolt connections |
|
7/ | 18 | . | . | Walling of flues; Flue-gas header boxes |
|
7/ | 20 | . | . | Furnace tubes |
|
9/ | 00 | Steam boilers of fire-tube type, i.e. the flue gas from a combustion chamber outside the boiler body flowing through tubes built-in in the boiler body |
|
9/ | 02 | . | the boiler body being disposed upright, e.g. above the combustion chamber |
|
9/ | 04 | . | . | the fire tubes being in upright arrangement |
|
9/ | 06 | . | . | . | Arrangement of header boxes providing for return diversion of flue gas flow |
|
9/ | 08 | . | . | the fire tubes being in horizontal arrangement |
|
9/ | 10 | . | the boiler body being disposed substantially horizontally, e.g. at the side of the combustion chamber |
|
9/ | 12 | . | . | the fire tubes being in substantially-horizontal arrangement |
|
9/ | 14 | . | . | . | Arrangement of header boxes providing for return diversion of flue gas flow |
|
9/ | 16 | . | the boiler body containing fire tubes disposed crosswise in inclined upward arrangement |
|
9/ | 18 | . | Component parts thereof; Accessories therefor, e.g. stay-bolt connections |
|
11/ | 00 | Steam boilers of combined fire-tube type and water-tube type, i.e. steam boilers of fire-tube type having auxiliary water tubes |
|
11/ | 02 | . | the fire tubes being in upright arrangement |
|
11/ | 04 | . | the fire tubes being in horizontal arrangement |
|
13/ | 00 | Steam boilers of fire-box type, i.e. the combustion of fuel being performed in a chamber or fire-box with subsequent flue(s) or fire tube(s), both chamber or fire-box and flues or fire tubes being built-in in the boiler body |
|
13/ | 02 | . | mounted in fixed position with the boiler body disposed upright |
|
13/ | 04 | . | mounted in fixed position with the boiler body disposed substantially horizontally |
|
13/ | 06 | . | Locomobile, traction-engine, steam-roller, or locomotive boilers |
|
13/ | 08 | . | . | without auxiliary water tubes inside the fire-box |
|
13/ | 10 | . | . | with auxiliary water tubes inside the fire-box |
|
13/ | 12 | . | . | . | the auxiliary water tubes lining the fire-box |
|
13/ | 14 | . | Component parts thereof; Accessories therefor |
|
13/ | 16 | . | . | Stay-bolt connections, e.g. rigid connections |
|
13/ | 18 | . | . | . | Flexible connections, e.g. of ball-and-socket type |
|
15/ | 00 | Water-tube boilers of horizontal type, i.e. the water-tube sets being arranged horizontally |
|
17/ | 00 | Water-tube boilers of horizontally-inclined type, i.e. the water-tube sets being inclined slightly with respect to the horizontal plane |
|
17/ | 02 | . | built-up from water-tube sets in abutting connection with two header boxes in common for all sets, e.g. with flat header boxes |
|
17/ | 04 | . | . | the water-tube sets being inclined in opposite directions, e.g. crosswise |
|
17/ | 06 | . | . | the water-tube sets being bent angularly |
|
17/ | 08 | . | . | the water-tube sets being curved |
|
17/ | 10 | . | built-up from water-tube sets in abutting connection with two sectional headers each for every set, i.e. with headers in a number of sections across the width or height of the boiler |
|
17/ | 12 | . | . | the sectional headers being in vertical or substantially-vertical arrangement |
|
17/ | 14 | . | . | the sectional headers being in horizontal or substantially-horizontal arrangement |
|
17/ | 16 | . | Component parts thereof; Accessories therefor |
|
17/ | 18 | . | . | Header boxes; Sectional headers |
|
19/ | 00 | Water-tube boilers of combined horizontally-inclined type and vertical type, i.e. water-tube boilers of horizontally-inclined type having auxiliary water-tube sets in vertical or substantially-vertical arrangement |
|
21/ | 00 | Water-tube boilers of vertical or steeply-inclined type, i.e. the water-tube sets being arranged vertically or substantially vertically |
|
21/ | 02 | . | built-up from substantially-straight water tubes |
|
21/ | 04 | . | . | involving a single upper drum and a single lower drum, e.g. the drums being arranged transversely |
|
21/ | 06 | . | . | . | the water tubes being arranged annularly in sets, e.g. in abutting connection with drums of annular shape |
|
21/ | 08 | . | . | . | the water tubes being arranged sectionally in groups or in banks, e.g. bent over at their ends |
|
21/ | 10 | . | . | . | the water tubes being arranged in staggered rows |
|
21/ | 12 | . | . | involving two or more upper drums and two or more lower drums, e.g. with crosswise-arranged water-tube sets in abutting connection with drums |
|
21/ | 14 | . | . | involving a single upper drum and two or more lower drums |
|
21/ | 16 | . | . | . | the lower drums being interconnected by further water tubes |
|
21/ | 18 | . | . | involving two or more upper drums and a single lower drum |
|
21/ | 20 | . | . | involving sectional or subdivided headers in separate arrangement for each water-tube set |
|
21/ | 22 | . | built-up from water tubes of form other than straight or substantially straight |
|
21/ | 24 | . | . | bent in serpentine or sinuous form |
|
21/ | 26 | . | . | bent helically, i.e. coiled |
|
21/ | 28 | . | . | bent spirally |
|
21/ | 30 | . | . | bent in U-loop form |
|
21/ | 32 | . | . | . | disposed horizontally in abutting connection with upright headers or rising water mains |
|
21/ | 34 | . | built-up from water tubes grouped in panel form surrounding the combustion chamber, i.e. radiation boilers |
|
21/ | 36 | . | . | involving an upper drum or headers mounted at the top of the combustion chamber |
|
21/ | 38 | . | . | Component parts thereof, e.g. prefabricated panels |
|
21/ | 40 | . | built-up from water tubes arranged in a comparatively long vertical shaft, i.e. tower boilers |
|
 | F22B 23/00 - F22B 37/78 |
