|  | F |
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

LIGHTING AND HEATING

|  | F25 |
REFRIGERATION AND COOLING; MANUFACTURE AND STORAGE OF ICE; LIQUEFACTION AND SOLIDIFICATION OF GASES

|  | F25B |
REFRIGERATION MACHINES, PLANTS, OR SYSTEMS; COMBINED HEATING AND REFRIGERATION SYSTEMS, e.g. HEAT PUMP SYSTEMS (pumps, compressors Fulltext... Hierarchy... Expanded...F04; use of heat pumps for domestic heating Fulltext... Hierarchy... Expanded...F24D; use of refrigeration in air-conditioning Fulltext... Hierarchy... Expanded...F24F)

|  | F25B 1/00 - F25B 13/00 |
Compression refrigeration machines, plants, and systems

|  | F25B 1/00 |
Compression refrigeration machines, plants, or systems, with non-reversible cycle (Fulltext... Hierarchy... Expanded...F25B 3/00, Fulltext... Hierarchy... Expanded...F25B 5/00, Fulltext... Hierarchy... Expanded...F25B 7/00, Fulltext... Hierarchy... Expanded...F25B 9/00 take precedence)

|  | F25B 1/02 |
· | with compressor of reciprocating-piston type (Fulltext... Hierarchy... Expanded...F25B 1/10 takes precedence)

|  | F25B 1/04 |
· | with compressor of rotary type (Fulltext... Hierarchy... Expanded...F25B 1/10 takes precedence)

|  | F25B 1/06 |
· | with compressor of jet type, e.g. using liquid under pressure (Fulltext... Hierarchy... Expanded...F25B 1/10 takes precedence)

|  | F25B 1/08 |
· · | using steam under pressure

|  | F25B 1/10 |
· | with multi-stage compression (with cascade operation Fulltext... Hierarchy... Expanded...F25B 7/00)

|  | F25B 3/00 |
Self-contained rotary compression refrigeration machines, i.e. with compressor, condenser, and evaporator rotating as a single unit

|  | F25B 5/00 |
Compression refrigeration machines, plants, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity (with cascade operation Fulltext... Hierarchy... Expanded...F25B 7/00)

|  | F25B 7/00 |
Compression refrigeration machines, plants, and systems, with cascade operation, i.e. with two or more circuits, the heat from the condenser of one circuit being absorbed by the evaporator of the next circuit (Fulltext... Hierarchy... Expanded...F25B 9/00 takes precedence)

|  | F25B 9/00 |
Compression refrigeration machines, plants, or systems, in which the refrigerant is air or other gas of low boiling point

|  | F25B 9/02 |
· | using Joule-Thompson effect; using vortex effect

|  | F25B 11/00 |
Compression refrigeration machines, plants, or systems, using turbines, e.g. gas turbines

|  | F25B 13/00 |
Compression refrigeration machines, plants, and systems, with reversible cycle, e.g. for use as heat pumps

|  | F25B 15/00 - F25B 17/00 |
Sorption refrigeration machines, plants, and systems

|  | F25B 15/00 |
Sorption refrigeration machines, plants, and systems, operating continuously, e.g. absorption type

|  | F25B 15/02 |
· | without inert gas (Fulltext... Hierarchy... Expanded...F25B 15/12, Fulltext... Hierarchy... Expanded...F25B 15/14, Fulltext... Hierarchy... Expanded...F25B 15/16 take precedence)

|  | F25B 15/04 |
· · | the refrigerant being ammonia evaporated from aqueous solution

|  | F25B 15/06 |
· · | the refrigerant being water vapour evaporated from a salt solution, e.g. lithium bromide

|  | F25B 15/08 |
· · | the refrigerant being sulphuric acid

|  | F25B 15/10 |
· | with inert gas (Fulltext... Hierarchy... Expanded...F25B 15/12, Fulltext... Hierarchy... Expanded...F25B 15/14, Fulltext... Hierarchy... Expanded...F25B 15/16 take precedence)

|  | F25B 15/12 |
· | with resorber (Fulltext... Hierarchy... Expanded...F25B 15/14 takes precedence)

|  | F25B 15/14 |
· | using osmosis

|  | F25B 15/16 |
· | using desorption cycle

|  | F25B 17/00 |
Sorption refrigeration machines, plants, or systems, operating intermittently, e.g. absorption or adsorption type

|  | F25B 17/02 |
· | the absorbent or adsorbent being a liquid, e.g. brine (Fulltext... Hierarchy... Expanded...F25B 17/10 takes precedence)

|  | F25B 17/04 |
· · | with two or more boilers operating alternately

|  | F25B 17/06 |
· · | with the boiler and evaporator built-up as a unit in a tiltable or revolving arrangement

|  | F25B 17/08 |
· | the absorbent or adsorbent being a solid, e.g. salt

|  | F25B 17/10 |
· | using the endothermic solution of salt

|  | F25B 19/00 - F25B 23/00 |
Refrigeration machines, plants, or systems with a single mode of operation, not covered by groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F25B 1/00-F25B 17/00

|  | F25B 19/00 |
Refrigeration machines, plants, or systems, using evaporation of a refrigerant but without recovery of the vapour

|  | F25B 19/02 |
· | using fluid jet, e.g. of steam

|  | F25B 19/04 |
· · | using liquid jet, e.g. of water

|  | F25B 21/00 |
Refrigeration machines, plants, or systems, using electric or magnetic effects

|  | F25B 21/02 |
· | using Peltier effect; using Nernst-Ettinghausen effect (thermoelectric elements Fulltext... Hierarchy... Expanded...H01L 35/00, Fulltext... Hierarchy... Expanded...H01L 37/00)

|  | F25B 23/00 |
Refrigeration machines, plants, or systems, with a single mode of operation not covered by groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F25B 1/00-F25B 21/00, e.g. using selective radiation effect

|  | F25B 25/00 |
Refrigeration machines, plants, and systems, using a combination of modes of operation covered by two or more of the groups Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...F25B 1/00-F25B 23/00 (combinations of two or more modes of operation covered by a single main group, see the relevant group)

|  | F25B 25/02 |
· | Compression-sorption machines, plants, and systems

|  | F25B 27/00 |
Refrigeration machines, plants, or systems, using particular sources of energy

|  | F25B 27/02 |
· | using waste heat, e.g. from internal-combustion engines

|  | F25B 29/00 |
Combined heating and refrigeration systems, e.g. heat-pump systems

|  | F25B 31/00 - F25B 49/00 |
Component parts or details of refrigeration machines

|  | F25B 31/00 |
Compressor arrangements (compressors per se Fulltext... Hierarchy... Expanded...F04)

|  | F25B 31/02 |
· | of motor-compressor units

|  | F25B 33/00 |
Boilers; Analysers; Rectifiers (boiler-absorbers Fulltext... Hierarchy... Expanded...F25B 35/00)

|  | F25B 35/00 |
Boiler-absorbers, i.e. boilers usable for absorption or adsorption

|  | F25B 35/02 |
· | using a liquid as sorbent, e.g. brine

|  | F25B 35/04 |
· | using a solid as sorbent

|  | F25B 37/00 |
Absorbers; Adsorbers (boiler-absorbers Fulltext... Hierarchy... Expanded...F25B 35/00; absorption or adsorption in general Fulltext... Hierarchy... Expanded...B01J 1/22)

|  | F25B 39/00 |
Evaporators; Condensers

|  | F25B 39/02 |
· | Evaporators

|  | F25B 39/04 |
· | Condensers

|  | F25B 41/00 |
Fluid-circulation arrangements, e.g. for transferring liquid from evaporator to boiler (pumps per se, sealings therefor Fulltext... Hierarchy... Expanded...F04)

|  | F25B 41/02 |
· | using electro-osmosis

|  | F25B 41/04 |
· | Disposition of valves (valves per se Fulltext... Hierarchy... Expanded...F16K)

|  | F25B 41/06 |
· | Flow restrictors, e.g. capillary tubes; Disposition thereof

|  | F25B 43/00 |
Arrangements for separating or purifying gases or liquids (in analysers or rectifiers Fulltext... Hierarchy... Expanded...F25B 33/00); Arrangements for vaporising the residuum of liquid refrigerant, e.g. by heat

|  | F25B 43/02 |
· | for separating lubricants from the refrigerant

|  | F25B 43/04 |
· | for withdrawing non-condensible gases

|  | F25B 45/00 |
Arrangements for charging and discharging refrigerant

|  | F25B 47/00 |
Arrangements for preventing or removing deposits or corrosion, not provided for in another sub-class

|  | F25B 49/00 |
Arrangement or mounting of control and safety devices (testing refrigerators Fulltext... Hierarchy... Expanded...G01M; control in general Fulltext... Hierarchy... Expanded...G05)