F
SECTION F — MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  
LIGHTING AND HEATING
 F24
HEATING; RANGES; VENTILATING (protecting plants by heating in gardens, orchards, or forests A01G 13/06; baking ovens and apparatus A21B; cooking devices other than ranges A47J; specially adapted for vehicles, see the relevant sub-classes of classes B60-B64; combustion apparatus in general F23; drying F26B; ovens in general F27; electric heating elements and arrangements H05B)
 F24

Note(s)

In this class, the following words are used with the meanings indicated:

  1. "Stove" includes an open fire.
  2. "Range" means an apparatus for cooking having elements that perform different cooking operations or cooking and heating operations.

 F24F
AIR-CONDITIONING; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (devices for ventilating greenhouses A01G; disinfecting or sterilising of air A61L; devices for reconditioning breathing air in sealed rooms or for ventilating gas-proof shelters A62B; filtering, washing or drying of gases B01D; humidifying gases B01F 3/02; B01F 3/04; spraying B05B, B05D; removing dirt or fumes from areas where they are produced B08B 15/00; production of ozone C01B 13/10; chimneys or flues E04F 17/02, E04H 12/28, F23J 11/00, F23L 17/02; air ducts or conduits E04F 17/04, F16L; ventilation in doors or windows E06B 7/02; fans, blowers F04; noise-absorbing in pipes or pipe systems F16L; tops for chimneys or ventilating shafts F23L; cooling F25; ventilation or air-conditioning specially adapted for vehicles, see the relevant vehicle classes)
 F24F

Note(s)

  1. In this sub-class, the following terms are used with the meanings indicated:
    1. "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:
      1. heating,
      2. cooling,
      3. any other kind of treatment, e.g. humidification.
    2. "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 heating of rooms or spaces by the supply of heated air. The supply or circulation systems may include means for cooling the air or for treating the air in any other way than cooling or heating.
 F24F 1/00 - 
F24F 5/00
Air-conditioning
 F24F 1/00
Room units, e.g. receiving primary air from a central station
 F24F 1/02
·  Self-contained, i.e. with all apparatus for treatment installed in a common casing
 F24F 1/04
·  ·  Arrangements for portability
 F24F 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 F24F 1/00; construction of heat-exchangers F28)
 F24F 3/02
·  characterised by the pressure or velocity of the primary air
 F24F 3/04
·  ·  operating with high pressure or high velocity
 F24F 3/06
·  characterised by the arrangements for the supply of heat-exchange fluid for the subsequent treatment of primary air in the room units (F24F 3/02 takes precedence)
 F24F 3/08
·  ·  with separate supply and return lines for hot and cold heat-exchange fluids
 F24F 3/10
·  ·  with separate supply lines and common return line for hot and cold heat-exchange fluids
 F24F 3/12
·  characterised by the treatment of the air otherwise than by heating and cooling (F24F 3/02, F24F 3/06 take precedence; apparatus for the individual treatment, see the appropriate sub-classes for the treatments)
 F24F 3/14
·  ·  by humidification; by dehumidification
 F24F 3/16
·  ·  by purification, e.g. by filtering; by sterilisation; by ozonisation
 F24F 5/00
Air-conditioning systems or apparatus not covered by group F24F 1/00 or F24F 3/00
 F24F 7/00
Ventilation
 F24F 7/02
·  Roof ventilation (sky-lights E04D 13/03)
 F24F 7/04
·  with ducting systems
 F24F 7/06
·  ·  with forced air circulation, e.g. by fan
 F24F 9/00
Use of air currents for screening, e.g. air curtain
 F24F 11/00 - 
F24F 13/00
Common features and details
 F24F 11/00
Control or safety systems or apparatus (control valves per se F16K; controlling in general G05)
 F24F 11/02
·  Arrangement or mounting of control or safety devices
 F24F 11/04
·  ·  solely for controlling the volume of air (F24F 11/08 takes precedence)
 F24F 11/06
·  ·  solely for controlling the supply of heating or cooling fluids for secondary treatment (F24F 11/08 takes procedence)
 F24F 11/08
·  ·  for controlling the primary treatment of air
 F24F 13/00
Details common to air-conditioning, ventilation, and use of air currents for screening
 F24F 13/02
·  Ducting arrangements
 F24F 13/04
·  ·  Air-mixing units (F24F 13/06 takes precedence; mixing gases in general B01F 3/02)
 F24F 13/06
·  ·  Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser
 F24F 13/08
·  Air-flow control members, e.g. louvres, grilles, flaps, guide plates (F24F 13/06 takes precedence; roof ventilators F24F 7/02)
 F24F 13/10
·  ·  movable, e.g. damper (F24F 13/18 takes precedence; valves in general F16K)
 F24F 13/12
·  ·  ·  built-up of sliding members
 F24F 13/14
·  ·  ·  built-up of tilting members, e.g. louvre
 F24F 13/16
·  ·  ·  built-up of parallelly-movable plates
 F24F 13/18
·  ·  specially adapted for insertion in flat panels, e.g. in door or window-pane