IPC 6 English version F24F !A-F24F 13/32

F24F-F24F01332

SECTION F– MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING

F 24

HEATING; RANGES; VENTILATING (protecting plants by heating in gardens, orchards, or forests A 01 G 13/06; baking ovens and apparatus A 21 B; cooking devices other than ranges A 47 J; forging B 21 J, B 21 K; specially adapted for vehicles, see the relevant subclasses of classes B 60 to B 64; combustion apparatus in general F 23; drying F 26 B; ovens in general F 27; electric heating elements or arrangements H 05 B)

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

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

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

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

Arrangements for portability

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)

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

operating with high pressure or high velocity

044

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

048

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

056

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

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)

with separate supply and return lines for hot and cold heat-exchange fluids

with separate supply lines and common return line for hot and cold heat-exchange fluids

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)

by humidification; by dehumidification

147

with both heat and humidity transfer between supplied and exhausted air [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]

by purification, e.g. by filtering; by sterilisation; by ozonisation

Air-conditioning systems or apparatus not covered by group F 24 F 1/00 or F 24 F 3/00

Air-humidification [3]

by evaporation of water in the air [3]

using stationary unheated wet elements [3]

using moving unheated wet elements [3]

using heated wet elements [3]

heated electrically [3]

by forming water dispersions in the air [3]

using nozzles (nozzles per se, spraying in general B 05 B) [3]

using rotating elements [3]

by injection of steam into the air [3]

Ventilation

007

with forced flow (using ducting systems F 24 F 7/06) [3]

013

using wall or window fans, displacing air through the wall or window [3]

Roof ventilation (F 24 F 7/007 takes precedence; ventilation of roof coverings E 04 D) [3,6]

with ducting systems

with forced air circulation, e.g. by fan

with separate ducts for supplied and exhausted air [3]

with air supply, or exhaust, through perforated wall, floor or ceiling (outlet members for directing or distributing air F 24 F 13/06) [3]

Use of air currents for screening, e.g. air curtain (air curtains for vehicles B 60 J 9/04)

Common features or details

11/

Control or safety systems or apparatus (control valves per se F 16 K; humidity control G 05 D 22/00) [3]

11/

Arrangement or mounting of control or safety devices

11/

solely for controlling the rate of air-flow (F 24 F 11/08 takes precedence)

11/

047

to constant value [3]

11/

053

by means responsive to temperature [3]

11/

solely for controlling the supply of heating or cooling fluids for secondary treatment (F 24 F 11/08 takes procedence)

11/

for controlling the primary treatment of air

12/

Use of energy recovery systems in air conditioning, ventilation or screening (with both heat and humidity transfer between supplied and exhausted air F 24 F 3/147; heat-exchange in general F 28) [4]

13/

Details common to, or for air-conditioning, air-humidification, ventilation or use of air currents for screening

13/

Ducting arrangements

13/

Air-mixing units (F 24 F 13/06 takes precedence; mixing gases in general B 01 F 3/02)

13/

Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser

13/

062

having one or more bowls or cones diverging in the flow direction (F 24 F 13/072 takes precedence) [3]

13/

065

formed as cylindrical or spherical bodies which are rotatable (F 24 F 13/072 takes precedence) [3]

13/

068

formed as perforated walls, ceilings or floors (F 24 F 13/078 takes precedence) [3]

13/

072

of elongated shape, e.g. between ceiling panels [3]

13/

075

having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable (F 24 F 13/072 takes precedence) [3]

13/

078

combined with lighting fixtures (air-treatment systems with air-flow over lighting fixtures F 24 F 3/056) [3]

13/

Air-flow control members, e.g. louvres, grilles, flaps, guide plates (F 24 F 7/013, F 24 F 13/06 take precedence; roof ventilation F 24 F 7/02) [3]

13/

movable, e.g. damper (F 24 F 13/18 takes precedence; valves in general F 16 K)

13/

built-up of sliding members

13/

built-up of tilting members, e.g. louvre

13/

with parallel simultaneously tiltable lamellae [3]

13/

built-up of parallelly-movable plates

13/

specially adapted for insertion in flat panels, e.g. in door or window-pane

13/

Casings or covers [5]

13/

Means for preventing condensation or evacuating condensate [5]

13/

Means for preventing or suppressing noise [5]

13/

Arrangements for air-circulation by means of induction, e.g. by fluid coupling or thermal effect [6]

13/

Arrangement or mounting of filters [6]

13/

Arrangement or mounting of heat-exchangers [6]

13/

Supports for air-conditioning, air-humidification or ventilation units [6]