(0)F24F:0/1:
IPC6
SECTION F - MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS;BLASTING
AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF...
F24F
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F 24 F

 AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (devices for ventilating greenhouses A 01 G; animal husbandry A 01 K, e.g. controlling humidity in incubators A 01 K 41/04; disinfecting or sterilising of air A 61 L; devices for reconditioning breathing air in sealed rooms or for ventilating gasproof shelters A 62 B; filtering, washing or drying of gases B 01 D; mixing gases with vapours or liquids in general B 01 F 3/00; spraying B 05 B, B 05 D; removing dirt or fumes from areas where they are produced B 08 B 15/00; ventilation, air-conditioning, or cooling, specially adapted for vehicles, see the relevant vehicle places, e.g. B 60 H, B 61 D 27/00; production of ozone C 01 B 13/10; chimneys or flues E 04 F 17/02, E 04 H 12/28, F 23 J 11/00, F 23 L 17/02; air ducts or conduits E 04 F 17/04, F 16 L; ventilation in doors or windows E 06 B 7/02; fans, blowers F 04; noise-absorbing in pipes or pipe systems F 16 L; tops for chimneys or ventilating shafts F 23 L; cooling F 25; details of heat-exchange or heat-transfer apparatus, of general application F 28 F; apparatus for generating ions to be introduced into non-enclosed gases, e.g. the atmosphere, H 01 T 23/00)
 

Notes

(1)

 In this subclass:
 

-

 air-humidification as auxiliary treatment in air-conditioning, i.e. in units wherein the air is also either cooled or heated, is covered by groups F 24 F 1/00 or F 24 F 3/14; [3]
 

-

 air-humidification per se, e.g. "room humidifiers", is covered by group F 24 F 6/00. [3]

(2)

 In this subclass, the following terms or expressions are used with the meanings indicated:
 

-

 "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;
 

-

 "ventilation" means the supply of air to, or its extraction from, rooms or spaces, and systems for circulating air within rooms or spaces, but does not cover the mere treatment of air being supplied to, extracted from, or circulated within, rooms or spaces.

(3)

 Processes using enzymes or micro-organisms in order to:
 

(i)

 liberate, separate or purify a pre-existing compound or composition, or to
 

(ii)

 treat textiles or clean solid sufaces of materials
 

are further classified in subclass C 12 S. [5]

 

 

 

Air-conditioning
 

 1
/ 00 Room units, e.g. receiving primary air from a central station

1
/ 01 • in which secondary air is induced by injector action of the primary air (F 24 F 1/02 takes precedence) [3]  

1
/ 02 • self-contained, i.e. with all apparatus for treatment installed in a common casing  

1
/ 04 • • Arrangements for portability  
 

 3
/ 00 Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems (room units F 24 F 1/00; construction of heat-exchangers F 28 )

3
/ 02 • characterised by the pressure or velocity of the primary air (F 24 F 3/044 takes precedence) [3]  

3
/ 04 • • operating with high pressure or high velocity  

3
/ 044 • Systems in which all treatment is given in the central station, i.e. all-air systems [3]  

3
/ 048 • • with temperature control at constant rate of air-flow (F 24 F 3/056 takes precedence) [3]  

3
/ 052 • • • Multiple duct systems, e.g. systems in which hot and cold air are supplied by separate circuits from the central station to mixing chambers in the spaces to be conditioned [3]  

3
/ 056 • • the air at least partially flowing over lighting fixtures, the heat of which is dissipated or used [3]  

3
/ 06 • characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units (F 24 F 3/02 takes precedence)  

3
/ 08 • • with separate supply and return lines for hot and cold heat-exchange fluids  

3
/ 10 • • with separate supply lines and common return line for hot and cold heat-exchange fluids  

3
/ 12 • characterised by the treatment of the air otherwise than by heating and cooling (F 24 F 3/02, F 24 F 3/06 take precedence; apparatus for the individual treatment, see the appropriate subclasses for the treatments)  

3
/ 14 • • by humidification; by dehumidification  

3
/ 147 • • • with both heat and humidity transfer between supplied and exhausted air [3]  

3
/ 153 • • • with subsequent heating, i.e. with the air, given the required humidity in the central station, passing a heating element to achieve the required temperature [3]  

3
/ 16 • • by purification, e.g. by filtering; by sterilisation; by ozonisation  
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