Cooperative Patent Classification

CPC Definition - Subclass F25D

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Last Updated Version: 2016.11
REFRIGERATORS; COLD ROOMS; ICE-BOXES; COOLING OR FREEZING APPARATUS NOT COVERED BY ANY OTHER SUBCLASS (refrigerated show cases A47F 3/04; thermally-insulated vessels for domestic use A47J 41/00; refrigerated vehicles, see the appropriate subclasses of classes B60 - B64; containers with thermal insulation in general B65D 81/38; heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or materials for the production of heat or cold by chemical reactions other than by combustion C09K 5/00; thermally-insulated vessels for liquefied or solidified gases F17C; air-conditioning or air-humidification F24F; refrigeration machines, plants or systems F25B; cooling of instruments and comparable apparatus without refrigeration G12B; cooling of engines or pumps, see the relevant classes)
Definition statement

This place covers:

Refrigerators; cold rooms; ice-boxes; cooling or freezing apparatus not covered by any other subclass.

Relationships with other classification places

F24F: "air-conditioning" means the supply of air to rooms or spaces by means which provide for the treatment of the air in at least two of the following ways: heating-cooling-any other kind of treatment, e.g. humidification.

Other household appliance fields are A47L (domestic washing), D06F (domestic laundry driers), F24B (domestic stoves).

References
Limiting references

This place does not cover:

Refrigerated show cases

Thermally-insulated vessels for domestic use

Refrigerated vehicles

B60- B64

Containers with thermal insulation in general

Heat-transfer, heat-exchange or heat-storage materials, e.g. refrigerants, or material for the production of heat or cold by chemical reactions other than by combustion

Cooling of engines or pumps

Thermally-insulated vessels for liquefied or solidified gases

Air-conditioning or air-humidification

Refrigeration machines, plants or systems

Production, working, storing or distribution of ice

Cooling of instruments and comparable apparatus without refrigeration

Informative references

Attention is drawn to the following places, which may be of interest for search:

Non-refrigerated containers specially adapted for transporting or storing living parts whilst preserving, e.g. cool boxes, blood bags or straws for seminal fluid

Cooling of specific food

Cooling of meat

Cooling of fruit

Cooling of ice cream

Cooling of food in general

Cooled garments

Casings for protecting, packaging, dispensing articles for surgery

Containers specially adapted for medical or pharmaceutical purposes

Cooling of protective clothing

Heat insulating devices, e.g. jackets for flasks, for laboratory

B01L11/02

Conveyors

Laptop cooling

Coin-freed or like apparatus with heating or cooling means

Computer/electronics cooling

Special rules of classification

Devices not associated with refrigerating machinery: F25D 1/00-F25D 9/00

Devices associated with refrigerating machinery: F25D 11/00-F25D 16/00

Details or features of the devices covered by groups F25D 1/00 - F25D 16/00: F25D 17/00-F25D 31/00

Only classify a household appliance when a refrigerator or freezer is mentioned or when a refrigerator or freezer is shown in the drawings. Always circulate to the following household appliance fields:

A47L (domestic washing), D06F (domestic laundry driers), F24B (domestic stoves).

Glossary of terms

In this place, the following terms or expressions are used with the meaning indicated:

Device

means an enclosed space to be cooled; such devices being associated either with refrigerating machinery, e.g. in a refrigerator, or with other cold sources, e.g. in an ice-box.

{combined with heat exchangers}
Special rules of classification

Classify in F25D 3/005 when only details of the heat exchanger are claimed.

When heat exchangers are combined with a cooling cycle: F25D 16/00.

When combined with or situated in refrigerators: F25D 11/006.

using ice, e.g. ice-boxes
Special rules of classification

Not only use of ice, but also PCM's, i.e. Phase Change Materials, blue ice.

Movable containers
Special rules of classification

Classify also in F25D 2303/08.

portable, i.e. adapted to be carried personally
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Special arrangement or features of devices using cold storage material

Type of cooled receptacles

Lunch or picnic boxes

Drinking glasses

Thermally insulated vessels with heat or cold storing elements or material for kitchen equipment

Cooling bags for medical or therapeutic treatment of human body

Containers with thermal insulation in general

Materials undergoing a change of state from liquid to solid

Using latent heat

Special rules of classification

In case no details are claimed about cooling material, but only details about cooling box itself, no classification in F25D 3/08.

Special arrangements or features of devices using cold storage material are additionally classified in F25D 2303/08 and lower.

Features of the cooled receptacles are classified in F25D 2331/80 and lower.

using liquefied gases, e.g. liquid air {(for cooling semiconductor devices H01L 23/445)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

For cooling semiconductor devices

Special rules of classification

Only cooled rooms, otherwise classify in F25B 19/005

Classify in F25D 3/12 when CO2 snow (dry ice) is claimed or mentioned.

with conveyors carrying articles to be cooled through the cooling space
Special rules of classification

Conveyors in general

Stationary devices with conveyors carrying articles to be cooled through the cooling space

By conveyors

Using solidified gases with conveyors carrying articles to be cooled through the cooling space

using solidified gases, e.g. carbon-dioxide snow
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Solidiying carbon dioxide

Special rules of classification

Classify in F25D 3/10 when liquid N2 is claimed or mentioned.

{Stationary devices with conveyors carrying articles to be cooled through the cooling space}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Using liquefied gases with conveyors carrying articles to be cooled through the cooling space

Stationary devices with conveyors carrying articles to be cooled through the cooling space

By conveyors

Conveyors in general

Devices using endothermic chemical reactions, e.g. using frigorific mixtures
Definition statement

This place covers:

Cooling by endothermic chemical reaction between substances triggered by for example rupturing/piercing a membrane.

Devices using evaporation effects without recovery of the vapour (butter or cheese dishes with cooling devices A47G 19/26)
Definition statement

This place covers:

The cooling effect is derived from the evaporation of water, for which a supply of heat is required.

References
Limiting references

This place does not cover:

Vacuum coolers

Butter or cheese dishes with cooling devices

Evaporative coolers

Special rules of classification

Classification of devices using evaporation effects without recovery of the vapour at ambient pressure.

Self-contained movable devices, e.g. domestic refrigerator
References
Limiting references

This place does not cover:

By forced circulation

Purses, travelling bags or baskets, suitcases

Hand carts

Containers for storage or transport of articles or materials

{with cold storage accumulators}
Special rules of classification

In case cold accumulators are arranged inside a refrigerator.

Cold storage accumulators in devices not associated with refrigerating machinery and emphasize on heat exchanger itself, classify in F25D 3/005.

When heat exchangers are combined with a cooling system, classify in F25D 16/00.

{with two or more evaporators}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Compression machines, plant, or systems, with several evaporator circuits, e.g. for varying refrigerating capacity

{using primary and secondary refrigeration systems}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Machines, plant, or systems, using primary and secondary systems

{of the sorption cycle type}
Special rules of classification

Documents with one cooling compartment and sorption cycle classify in F25D 11/027 and F25D 11/00.

with conveyors carrying articles to be cooled through the cooling space
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Using liquefied gases with conveyors carrying articles to be cooled through the cooling space

Using solidified gases with conveyors carrying articles to be cooled through the cooling space

By conveyors

Conveyors in general

Devices not covered by group F25D 11/00 or F25D 13/00, e.g. non-self-contained movable devices
Definition statement

This place covers:

Products cooled by a cooling system at a remote place;

Devices for freezing of pipes for forming a frozen ice plug in a section of a pipe to be repaired.

Movable devices implies also refrigerators.

Special rules of classification

Classify also in F25D 17/02 in case of cooling by circulating a coolant.

Classify also in F25D 17/06 in case of cooling by cold air.

Devices using a combination of a cooling mode associated with refrigerating machinery with a cooling mode not associated with refrigerating machinery
Special rules of classification

When heat exchangers are combined with a cooling system, classify in F25D 16/00.

In case cold accumulators are arranged inside a refrigerator, classify in F25D 11/006.

Cold storage accumulators in devices not associated with refrigerating machinery and emphasize on heat exchanger itself, classify in F25D 3/005.

{in cold rooms}
Special rules of classification

Classification in F25B 25/005 when primary refrigeration cycle is important.

for circulating air, e.g. by convection
Definition statement

This place covers:

Circulation of air by natural convection.

References
Limiting references

This place does not cover:

Forced circulation of air is classified in

{Air treating means within refrigerated spaces (air conditioning in general F24F)}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Treating air flowing to refrigeration compartments

Preservation or chemical ripening of fruit or vegetables

Preservation of food in general

Disinfection, sterilization or deodorization of air

Filtering material for liquid or gaseous fluids

Ion generating apparatus

Special rules of classification

Treating air flowing to refrigeration compartments by purification (dehumidification, humidification, deodorizing, ozone generator and uv-lamp) is additionally classified in F25D 2317/041 and lower.

Treating air flowing to refrigeration compartments by creating a vacuum in a storage compartment to store products under vacuum is additionally classified in F25D 2317/043. Vacuum cooling is classified in F25D 31/00.

{Air flow control arrangements}
Definition statement

This place covers:

Air dampers; Air valves.

by forced circulation
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Air flow control arrangements

Special arrangements or features of forced air circulation within refrigerated spaces

Ventilator details

F04

Special rules of classification

Circulation of air by natural convection is classified in F25D 17/04.

Control of air circulation is also classified in F25D 17/06.

Special arrangements or features of forced air circulation within refrigerated spaces are additionally classified in F25D 17/06 and lower.

Additionally classify in F25D 21/002 in case of defrost control.

using ducts
Definition statement

This place covers:

Ducts for cooling by radiation, i.e. indirect cooling.

Arrangement or mounting of refrigeration units with respect to devices {or objects to be refrigerated, e.g. infra-red detectors}
Definition statement

This place covers:

Mounting of complete refrigeration units.

References
Limiting references

This place does not cover:

Mounting of components of refrigerating machinery

{Defroster control}
References
Limiting references

This place does not cover:

Classification in F25B 47/02 when frost is removed by heat of the refrigeration cycle.

Removing frost (defrosting cycles F25B 47/02)
References
Limiting references

This place does not cover:

Classification in F25B 47/02 when frost is removed by heat of the refrigeration cycle.

Informative references

Attention is drawn to the following places, which may be of interest for search:

Alternate defrosting

Collecting or removing condensed and defrost water; Drip trays
References
Limiting references

This place does not cover:

Passenger or goods spaces characterized by condensed liquid drainage means

Removing condensate in air-conditioning

Collecting and removing condensate for heat-exchangers

Informative references

Attention is drawn to the following places, which may be of interest for search:

Special arrangements or features of collecting condense or defrost water

Cooling refrigerating machinery

Special rules of classification

Special arrangements or features of collecting condense or defrost water are additionally classified in F25D 21/14 and lower.

{for cooling refrigerating machinery}
Definition statement

This place covers:

Cooling of compressor and condenser of refrigerated enclosures.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Special arrangements or details for cooling refrigerating machinery

Cooling of compressor or motor

Condensers with refrigerant heat exchange tubes positioned inside or around a vessel containing water or pcm to cool the refrigerant gas

Water-cooled condensers

{for mounting refrigerating machinery components}
Definition statement

This place covers:

Mounting of components of refrigerating machinery.

References
Limiting references

This place does not cover:

Mounting of complete refrigeration units:

Special rules of classification

Special arrangements or features for cooling refrigerating machinery are additionally classified in F25D 2323/002 and lower.

Doors; Covers (F25D 23/08 takes precedence {locks or fastenings E05B 65/0042})
References
Limiting references

This place does not cover:

Details not related to door itself, e.g. hinges, handles, actuators, dispensers are classified in

Parts formed wholly or mainly of plastics materials

Transparent doors

Informative references

Attention is drawn to the following places, which may be of interest for search:

Special arrangements or details of doors or covers not otherwise covered

Night covers display case

Locks or fastenings

Doors

Special rules of classification

F25D 23/08 takes precedence.

French doors are additionally classified in F25D 2323/021;

Doors that can be pivoted either left-handed or right-handed are additionally classified in F25D 2323/022.

Door in door constructions are additionally classified in F25D 2323/023.

{Details}
References
Limiting references

This place does not cover:

Details of refrigerator doors are classified in F25D 23/02.

Informative references

Attention is drawn to the following places, which may be of interest for search:

Handles

Locks or fastenings

Hinges

Special rules of classification

All details not related to refrigerator door itself, e.g. hinges, handles, actuators, dispensers are classified in F25D 23/028.

Door hinges are additionally classified in F25D 2323/024.

Walls (F25D 23/08 takes precedence; containers with thermal insulation B65D 81/38)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Insulation

Collapsible walls

Inflatable walls

Details of cabinets, racks or shelf units

Shaping or joining of plastics; Shaping of substances in a plastic state, in general; after-treatment of shaped products, e.g. repairing

Foaming

Extrusion molding

Production of refrigerators

Insulation, layered products

Containers with thermal insulation

Insulation, vacuum panel

Supports for pipes, cables or protective tubing

Supports for pipes or cables inside other pipes or sleeves

Thermal insulation in general

Special rules of classification

F25D 23/08 takes precedence.

Insulation (with respect to heat or sound) is additionally classified in F25D 2201/00.

Collapsible walls are additionally classified in F25D 2323/061.

Inflatable walls are additionally classified in F25D 2323/062.

{Sealing strips}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Magnetic gaskets

{Water cooler}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Refrigerator doors; covers

Special arrangements or details of the water filter for the water/ice dispenser

Special arrangements or details of the water tank for the water/ice dispenser

Filtering devices

Dispensing beverages

Ice dispenser

Special rules of classification

Additionally classify in:

F25D 23/02 when details of the door are claimed.

F25C 5/005 when details of an ice dispenser are claimed.

F25D 2323/121 when special arrangements or details of the water filter are claimed.

F25D 2323/122 when special arrangements or details of the water tank are claimed.

Charging, supporting, and discharging the articles to be cooled
Special rules of classification

Additionally classify in:

F25D 2331/80: Type of cooled receptacles.

by shelves
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Special arrangements or features of shelves with several possible configurations

Special arrangements or features of shelves made of glass or ceramic

Special arrangements or features of shelves made of wires

Type of cooled receptacles

Drawers, shelves

Show stands, hangers or shelves

Special rules of classification

Additionally classify in:

F25D 2325/021: Special arrangements or features of shelves with several possible configurations

F25D 2325/022: Special arrangements or features of shelves made of glass or ceramic

F25D 2325/023: Special arrangements or features of shelves made of wires

F25D 2331/80: Type of cooled receptacles.

{Baskets}
Definition statement

This place covers:

Wire baskets.

{Drawers}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Type of cooled receptacles

Drawers

Special rules of classification

Additionally classify drawers opened by sliding doors in F25D 23/021.

by conveyors (in general B65G)
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Using liquefied gases with conveyors carrying articles to be cooled through the cooling space

Using solidified gases with conveyors carrying articles to be cooled through the cooling space

Stationary devices with conveyors carrying articles to be cooled through the cooling space

Conveyors in general

Special rules of classification

Shelves or drawers which can be adjusted in height are classified in A47B 57/06.

Lighting arrangements (in general F21)
Definition statement

This place covers:

Lighting arrangements for lighting cooling enclosures, both inside and outside the enclosure.

Relationships with other classification places

Lighting in general: F21.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Special arrangements or features for lighting arrangements on the external side of the refrigerator, freezer or cooling box

Lighting devices

Circuit arrangements for electric light sources

Arrangement or mounting of control or safety devices
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Control issues F25D

Means for sensing or measuring F25D; Sensors therefor F25D

Arrangement or mounting of control or safety devices

Telecontrol of temperature

Inventory

Special rules of classification

F25D 17/06 takes precedence;

F25D 21/00 takes precedence;

F25B 49/02 takes precedence, classify in F25D 29/00 to distinguish a refrigerator over a refrigeration cycle.

F25B 5/00 takes precedence, classify in F25D 29/00 or F25D 11/022 to distinguish a refrigerator over a refrigeration cycle.

Additional classification of control issues in F25D 2600/00.

Additional classification of means for sensing or measuring and sensors therefor in F25D 2700/00.

{Mounting of control devices}
Definition statement

This place covers:

Mounting of control devices; Mounting of sensors to refrigeration devices

Special rules of classification

Mounting of sensors to refrigeration devices are classified in F25D 29/005/CCA.

Other cooling or freezing apparatus
Definition statement

This place covers:

Cooling by creating a vacuum.

References
Limiting references

This place does not cover:

Storing of products in a refrigerated enclosure under vacuum:

{Liquid coolers, e.g. beverage cooler (receptacle coolers F25D 31/006)}
References
Limiting references

This place does not cover:

Repectacle coolers

Informative references

Attention is drawn to the following places, which may be of interest for search:

Cooling of liquids with pour-throughs

{specially adapted for cooling receptacles, e.g. tanks}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Type of cooled receptacles

{Bottles or cans}
References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Type of cooled receptacles

{Drinking glasses}
Definition statement

This place covers:

Pre-chilling of glasses.

References
Informative references

Attention is drawn to the following places, which may be of interest for search:

Type of cooled receptacles; Glasses