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IPC-Stelle: F22D 5/08 1-Punkt Untergruppe [Version 2013.01, Sprache EN - English]

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Symbol		Titel
A Hierarchieinformationen		SECTION A — HUMAN NECESSITIES
B Hierarchieinformationen		SECTION B — PERFORMING OPERATIONS; TRANSPORTING
C Hierarchieinformationen		SECTION C — CHEMISTRY; METALLURGY
D Hierarchieinformationen		SECTION D — TEXTILES; PAPER
E Hierarchieinformationen		SECTION E — FIXED CONSTRUCTIONS
F Hierarchieinformationen		SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
F01 Hierarchieinformationen		ENGINES OR PUMPS
F01 Hierarchieinformationen		MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
F02 Hierarchieinformationen		COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
F03 Hierarchieinformationen		MACHINES OR ENGINES FOR LIQUIDS; WIND, SPRING, OR WEIGHT MOTORS; PRODUCING MECHANICAL POWER OR A REACTIVE PROPULSIVE THRUST, NOT OTHERWISE PROVIDED FOR
F04 Hierarchieinformationen		POSITIVE-DISPLACEMENT MACHINES FOR LIQUIDS; PUMPS FOR LIQUIDS OR ELASTIC FLUIDS
F15 Hierarchieinformationen		ENGINEERING IN GENERAL
F15 Hierarchieinformationen		FLUID-PRESSURE ACTUATORS; HYDRAULICS OR PNEUMATICS IN GENERAL
F16 Hierarchieinformationen		ENGINEERING ELEMENTS OR UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
F17 Hierarchieinformationen		STORING OR DISTRIBUTING GASES OR LIQUIDS
F21 Hierarchieinformationen		LIGHTING; HEATING
F21 Hierarchieinformationen		LIGHTING
F22 Hierarchieinformationen		STEAM GENERATION
F22B Hierarchieinformationen		METHODS OF STEAM GENERATION; STEAM BOILERS (steam engine plants where engine aspects predominate F01K; removal of combustion products or residues, e.g. cleaning of the combustion contaminated surfaces of tubes of boilers, F23J 3/00; 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)
F22D Hierarchieinformationen		PREHEATING, 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 1/00 Hierarchieinformationen		Feed-water heaters, e.g. preheaters
F22D 3/00 Hierarchieinformationen		Accumulators for preheated water
F22D 5/00 Hierarchieinformationen		Controlling 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)
F22D 5/02 Hierarchieinformationen		. 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
F22D 5/04 Hierarchieinformationen		. with pivoting buckets
F22D 5/06 Hierarchieinformationen		. 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
F22D 5/08 Hierarchieinformationen		. with float-actuated valves
F22D 5/10 Hierarchieinformationen		. . and with pistons or membranes unitary with the feed inlet valves
F22D 5/12 Hierarchieinformationen		. . and with dipping tubes
F22D 5/14 Hierarchieinformationen		. responsive to thermal expansion and contraction, e.g. of solid elements
F22D 5/16 Hierarchieinformationen		. . of fluids
F22D 5/18 Hierarchieinformationen		. for varying the speed or delivery pressure of feed pumps
F22D 5/20 Hierarchieinformationen		. . without floats
F22D 5/22 Hierarchieinformationen		. . with floats
F22D 5/24 Hierarchieinformationen		. with electric switches
F22D 5/26 Hierarchieinformationen		. Automatic feed-control systems (automatic safety devices F22B 37/42; controlling in general G05)
F22D 5/28 Hierarchieinformationen		. . responsive to amount of steam withdrawn; responsive to steam pressure
F22D 5/30 Hierarchieinformationen		. . responsive to both water level and amount of steam withdrawn or steam pressure
F22D 5/32 Hierarchieinformationen		. . influencing the speed or delivery pressure of the feed pumps
F22D 5/34 Hierarchieinformationen		. . Applications of valves (valves per seF16K)
F22D 5/36 Hierarchieinformationen		. . for feeding a number of steam boilers designed for different ranges of temperature and pressure
F22D 7/00 Hierarchieinformationen		Auxiliary devices for promoting water circulation (adaptation of boilers for promoting water circulation F22B 37/34)
F22D 11/00 Hierarchieinformationen		Feed-water supply not provided for in other main groups
F22G Hierarchieinformationen		SUPERHEATING OF STEAM (steam-separating arrangements in boilers F22B 37/26; removal of combustion products or residues, e.g. cleaning of the combustion contaminated surfaces of tubes of boilers, F23J 3/00)
F23 Hierarchieinformationen		COMBUSTION APPARATUS; COMBUSTION PROCESSES
F24 Hierarchieinformationen		HEATING; RANGES; VENTILATING
F25 Hierarchieinformationen		REFRIGERATION OR COOLING; COMBINED HEATING AND REFRIGERATION SYSTEMS; HEAT PUMP SYSTEMS; MANUFACTURE OR STORAGE OF ICE; LIQUEFACTION OR SOLIDIFICATION OF GASES
F26 Hierarchieinformationen		DRYING
F27 Hierarchieinformationen		FURNACES; KILNS; OVENS; RETORTS [4]
F28 Hierarchieinformationen		HEAT EXCHANGE IN GENERAL
F41 Hierarchieinformationen		WEAPONS; BLASTING
F41 Hierarchieinformationen		WEAPONS
F42 Hierarchieinformationen		AMMUNITION; BLASTING
F99 Hierarchieinformationen		SUBJECT MATTER NOT OTHERWISE PROVIDED FOR IN THIS SECTION [2006.01]
G Hierarchieinformationen		SECTION G — PHYSICS
H Hierarchieinformationen		SECTION H — ELECTRICITY

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