IPC-Stelle: F22D [Version 2017.01]

SymbolTypTitel
FSKMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F22KLSTEAM GENERATION
F22DUKLPREHEATING, OR ACCUMULATING PREHEATED, FEED-WATER; FEED-WATER SUPPLY; CONTROLLING WATER LEVEL;  AUXILIARY DEVICES FOR PROMOTING WATER CIRCULATION WITHIN BOILERS (chemical treatment of water, e.g. purification, C02F; enclosed heat-exchange apparatus in general F28D; controlling in general G05)
F22D 1/00HGRFeed-water heaters, e.g. preheaters [1, 2006.01]
F22D 1/02UGR1
.with water tubes arranged in the boiler furnace, fire tubes, or flue ways (heat-exchange tubes in general F28F) [1, 2006.01]
F22D 1/04UGR2
. .the tubes having plain outer surfaces, e.g. in vertical arrangement [1, 2006.01]
F22D 1/06UGR3
. . .in horizontal arrangement [1, 2006.01]
F22D 1/08UGR2
. .the tubes having fins, ribs, gills, corrugations, or the like on their outer surfaces, e.g. in vertical arrangement [1, 2006.01]
F22D 1/10UGR3
. . .in horizontal arrangement (hollow fire-bars, grates, or the like used as water tubes F23H 3/02) [1, 2006.01]
F22D 1/12UGR2
. .Control devices, e.g. for regulating steam temperature [1, 2006.01]
F22D 1/14UGR2
. .Safety or venting devices (safety devices for boilers in general F22B 37/42) [1, 2006.01]
F22D 1/16UGR1
.with water tubes arranged otherwise than in the boiler furnace, fire tubes, or flue ways [1, 2006.01]
F22D 1/18UGR2
. .and heated indirectly [1, 2006.01]
F22D 1/20UGR2
. .and directly connected to boilers [1, 2006.01]
F22D 1/22UGR2
. .and provided for rotary movement [1, 2006.01]
F22D 1/24UGR1
.with fire tubes or flue ways traversing feed-water vessels [1, 2006.01]
F22D 1/26UGR1
.with means, other than tubes, to separate water and heating medium, e.g. bulk heaters without internal flues or tubes, jacketted smoke-boxes or flues [1, 2006.01]
F22D 1/28UGR1
.for direct heat transfer, e.g. by mixing water and steam [1, 2006.01]
F22D 1/30UGR2
. .with stages, steps, baffles, dishes, circular troughs, or other means to cause interrupted or cascading fall of water [1, 2006.01]
F22D 1/32UGR1
.arranged to be heated by steam, e.g. bled from turbines [1, 2006.01]
F22D 1/34UGR2
. .and returning condensate to boiler with main feed supply [1, 2006.01]
F22D 1/36UGR1
.Water and air preheating systems [1, 2006.01]
F22D 1/38UGR2
. .Constructional features of water and air preheating systems [1, 2006.01]
F22D 1/40UGR1
.Combinations of exhaust-steam and smoke-gas preheaters (for locomotives F22D 1/42) [1, 2006.01]
F22D 1/42UGR1
.specially adapted for locomotives [1, 2006.01]
F22D 1/44UGR2
. .Smoke-gas preheaters [1, 2006.01]
F22D 1/46UGR2
. .Exhaust-steam preheaters [1, 2006.01]
F22D 1/48UGR2
. .Details [1, 2006.01]
F22D 1/50UGR1
.incorporating thermal de-aeration of feed-water (de-aeration produced in the course of direct heat transfer F22D 1/28; thermal de-aeration of water per seB01D 19/00, C02F 1/20; valves for venting F16K 24/04) [3, 2006.01]
F22D 3/00HGRAccumulators for preheated water [1, 2006.01]
F22D 3/02UGR1
.arranged within combustion chambers [1, 2006.01]
F22D 3/04UGR1
.combined with steam accumulators [1, 2006.01]
F22D 3/06UGR1
.directly connected to boilers [1, 2006.01]
F22D 3/08UGR1
.specially adapted for locomotives (locomotive boilers F22B 13/06) [1, 2006.01]
F22D 3/10UGR2
. .Control devices (controlling water feed to boilers, or water level F22D 5/00) [1, 2006.01]
F22D 5/00HGRControlling water feed or water level; Automatic water feeding or water-level regulators (steam traps F16T; measuring or indicating instruments G01; for indicating water level G01F; level control in general G05D 9/00) [1, 2006.01]
F22D 5/02UGR1
.with an intermediate compartment from which the water is fed by gravity after mechanically moving the compartment, the movement being controlled according to water level [1, 2006.01]
F22D 5/04UGR1
.with pivoting buckets [1, 2006.01]
F22D 5/06UGR1
.with receptacles external to, but in free communication with, the boilers and adapted to move up and down in accordance with change in water level [1, 2006.01]
F22D 5/08UGR1
.with float-actuated valves [1, 2006.01]
F22D 5/10UGR2
. .and with pistons or membranes unitary with the feed inlet valves [1, 2006.01]
F22D 5/12UGR2
. .and with dipping tubes [1, 2006.01]
F22D 5/14UGR1
.responsive to thermal expansion and contraction, e.g. of solid elements [1, 2006.01]
F22D 5/16UGR2
. .of fluids [1, 2006.01]
F22D 5/18UGR1
.for varying the speed or delivery pressure of feed pumps [1, 2006.01]
F22D 5/20UGR2
. .without floats [1, 2006.01]
F22D 5/22UGR2
. .with floats [1, 2006.01]
F22D 5/24UGR1
.with electric switches [1, 2006.01]
F22D 5/26UGR1
.Automatic feed-control systems (automatic safety devices F22B 37/42; controlling in general G05) [1, 2006.01]
F22D 5/28UGR2
. .responsive to amount of steam withdrawn; responsive to steam pressure [1, 2006.01]
F22D 5/30UGR2
. .responsive to both water level and amount of steam withdrawn or steam pressure [1, 2006.01]
F22D 5/32UGR2
. .influencing the speed or delivery pressure of the feed pumps [1, 2006.01]
F22D 5/34UGR2
. .Applications of valves (valves per seF16K) [1, 2006.01]
F22D 5/36UGR2
. .for feeding a number of steam boilers designed for different ranges of temperature and pressure [1, 2006.01]
F22D 7/00HGRAuxiliary devices for promoting water circulation (adaptation of boilers for promoting water circulation F22B 37/34) [1, 2006.01]
F22D 7/02UGR1
.Saddles or like directing plates fitted to furnace tubes [1, 2006.01]
F22D 7/04UGR1
.Injectors for water or steam [1, 2006.01]
F22D 7/06UGR1
.Rotary devices, e.g. propellers [1, 2006.01]
F22D 7/08UGR2
. .Arrangements of pumps, e.g. outside the boilers [1, 2006.01]
F22D 7/10UGR3
. . .within the boilers [1, 2006.01]
F22D 7/12UGR1
.Control devices [1, 2006.01]
F22D 7/14UGR1
.specially adapted for locomotive boilers [1, 2006.01]
F22D 11/00HGRFeed-water supply not provided for in other main groups [1, 2006.01]
F22D 11/02UGR1
.Arrangements of feed-water pumps (F22D 11/06 takes precedence; pumps per seF04) [1, 2006.01]
F22D 11/04UGR2
. .with means to eliminate steam formation [1, 2006.01]
F22D 11/06UGR2
. .for returning condensate to boiler [1, 2006.01]