|  | 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 Fulltext... Hierarchy... Expanded...A01G 13/06; baking ovens and apparatus Fulltext... Hierarchy... Expanded...A21B; cooking devices other than ranges Fulltext... Hierarchy... Expanded...A47J; specially adapted for vehicles, see the relevant sub-classes of classes Fulltext... Hierarchy... Expanded...Fulltext... Hierarchy... Expanded...B60-B64; combustion apparatus in general Fulltext... Hierarchy... Expanded...F23; drying Fulltext... Hierarchy... Expanded...F26B; ovens in general Fulltext... Hierarchy... Expanded...F27; electric heating elements and arrangements Fulltext... Hierarchy... Expanded...H05B)

|  | F24 |
Note(s) In this class, the following terms are used with the meanings indicated: "Stove" includes an open fire. "Range" means an apparatus for cooking having elements that perform different cooking operations or cooking and heating operations.

|  | F24F |
AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING (devices for ventilating greenhouses Fulltext... Hierarchy... Expanded...A01G; disinfecting or sterilising of air Fulltext... Hierarchy... Expanded...A61L; devices for reconditioning breathing air in sealed rooms or for ventilating gas-proof shelters Fulltext... Hierarchy... Expanded...A62B; filtering, washing or drying of gases Fulltext... Hierarchy... Expanded...B01D; mixing gases with vapours or liquids in general Fulltext... Hierarchy... Expanded...B01F 3/00; spraying Fulltext... Hierarchy... Expanded...B05B, Fulltext... Hierarchy... Expanded...B05D; removing dirt or fumes from areas where they are produced Fulltext... Hierarchy... Expanded...B08B 15/00; production of ozone Fulltext... Hierarchy... Expanded...C01B 13/10; chimneys or flues Fulltext... Hierarchy... Expanded...E04F 17/02, Fulltext... Hierarchy... Expanded...E04H 12/28, Fulltext... Hierarchy... Expanded...F23J 11/00, Fulltext... Hierarchy... Expanded...F23L 17/02; air ducts or conduits Fulltext... Hierarchy... Expanded...E04F 17/04, Fulltext... Hierarchy... Expanded...F16L; ventilation in doors or windows Fulltext... Hierarchy... Expanded...E06B 7/02; fans, blowers Fulltext... Hierarchy... Expanded...F04; noise-absorbing in pipes or pipe systems Fulltext... Hierarchy... Expanded...F16L; tops for chimneys or ventilating shafts Fulltext... Hierarchy... Expanded...F23L; cooling Fulltext... Hierarchy... Expanded...F25; ventilation or air-conditioning specially adapted for vehicles, see the relevant vehicle classes; apparatus for generating ions to be introduced into non-enclosed gases, e.g. the atmosphere, Fulltext... Hierarchy... Expanded...H01T 20/02)

|  | F24F |
Note(s) In this sub-class, the following terms 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 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. 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 Fulltext... Hierarchy... Expanded...F24F 1/00 or Fulltext... Hierarchy... Expanded...F24F 3/14. Air-humidification per se, e.g. "room humidifiers", is covered by group Fulltext... Hierarchy... Expanded...F24F 6/00. [3]

|  | F24F 1/00 - F24F 5/00 |
Air-conditioning

|  | F24F 1/00 |
Room units, e.g. receiving primary air from a central station

|  | F24F 1/01 |
· | in which secondary air is induced by injector action of the primary air (Fulltext... Hierarchy... Expanded...F24F 1/02 takes precedence) [3]

|  | 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 Fulltext... Hierarchy... Expanded...F24F 1/00; construction of heat-exchangers Fulltext... Hierarchy... Expanded...F28)

|  | F24F 3/02 |
· | characterised by the pressure or velocity of the primary air (Fulltext... Hierarchy... Expanded...F24F 3/044 takes precedence)

|  | F24F 3/04 |
· · | operating with high pressure or high velocity

|  | F24F 3/044 |
· | Systems in which all treatment is given in the central station, i.e. all-air systems [3]

|  | F24F 3/048 |
· · | with temperature control at constant rate of air-flow (Fulltext... Hierarchy... Expanded...F24F 3/056 takes precedence) [3]

|  | F24F 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]

|  | F24F 3/056 |
· · | the air at least partially flowing over lighting fixtures, the heat of which is dissipated or used [3]

|  | 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 (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...F24F 3/02, Fulltext... Hierarchy... Expanded...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 3/147 |
· · · | with both heat and humidity transfer between supplied and exhausted air [3]

|  | F24F 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]

|  | 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 Fulltext... Hierarchy... Expanded...F24F 1/00 or Fulltext... Hierarchy... Expanded...F24F 3/00

|  | F24F 6/00 |
Air-humidification [3]

|  | F24F 6/02 |
· | by evaporation of water in the air [3]

|  | F24F 6/04 |
· · | using stationary unheated wet elements [3]

|  | F24F 6/06 |
· · | using moving unheated wet elements [3]

|  | F24F 6/08 |
· · | using heated wet elements [3]

|  | F24F 6/10 |
· · · | heated electrically [3]

|  | F24F 6/12 |
· | by forming water dispersions in the air [3]

|  | F24F 6/14 |
· · | using nozzles (nozzles per se, spraying in general Fulltext... Hierarchy... Expanded...B05B) [3]

|  | F24F 6/16 |
· · | using rotating elements [3]

|  | F24F 6/18 |
· | by injection of steam into the air [3]

|  | F24F 7/00 |
Ventilation

|  | F24F 7/007 |
· | with forced flow (using ducting systems Fulltext... Hierarchy... Expanded...F24F 7/06) [3]

|  | F24F 7/013 |
· · | using wall or window fans, displacing air through the wall or window [3]

|  | F24F 7/02 |
· | Roof ventilation (Fulltext... Hierarchy... Expanded...F24F 7/007 takes precedence; ventilating sky-lights Fulltext... Hierarchy... Expanded...E04D 13/03)

|  | F24F 7/04 |
· | with ducting systems

|  | F24F 7/06 |
· · | with forced air circulation, e.g. by fan

|  | F24F 7/08 |
· · · | with separate ducts for supplied and exhausted air [3]

|  | F24F 7/10 |
· · · | with air supply, or exhaust, through perforated wall, floor or ceiling (outlet members for directing or distributing air Fulltext... Hierarchy... Expanded...F24F 13/06) [3]

|  | 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 Fulltext... Hierarchy... Expanded...F16K; controlling in general Fulltext... Hierarchy... Expanded...G05; humidity control Fulltext... Hierarchy... Expanded...G05D 22/00)

|  | F24F 11/02 |
· | Arrangement or mounting of control or safety devices

|  | F24F 11/04 |
· · | solely for controlling the rate of air-flow (Fulltext... Hierarchy... Expanded...F24F 11/08 takes precedence)

|  | F24F 11/047 |
· · · | to constant value [3]

|  | F24F 11/053 |
· · · | by means responsive to temperature [3]

|  | F24F 11/06 |
· · | solely for controlling the supply of heating or cooling fluids for secondary treatment (Fulltext... Hierarchy... Expanded...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 (Fulltext... Hierarchy... Expanded...F24F 13/06 takes precedence; mixing gases in general Fulltext... Hierarchy... Expanded...B01F 3/02)

|  | F24F 13/06 |
· · | Outlets for directing or distributing air into rooms or spaces, e.g. ceiling air diffuser

|  | F24F 13/062 |
· · · | having one or more bowls or cones diverging in the flow direction (Fulltext... Hierarchy... Expanded...F24F 13/072 takes precedence) [3]

|  | F24F 13/065 |
· · · | formed as cylindrical or spherical bodies which are rotatable (Fulltext... Hierarchy... Expanded...F24F 13/072 takes precedence) [3]

|  | F24F 13/068 |
· · · | formed as perforated walls, ceilings or floors (Fulltext... Hierarchy... Expanded...F24F 13/078 takes precedence) [3]

|  | F24F 13/072 |
· · · | of elongated shape, e.g. between ceiling panels [3]

|  | F24F 13/075 |
· · · | having parallel rods or lamellae directing the outflow, e.g. the rods or lamellae being individually adjustable (Fulltext... Hierarchy... Expanded...F24F 13/072 takes precedence) [3]

|  | F24F 13/078 |
· · · | combined with lighting fixtures (air-treatment systems with air-flow over lighting fixtures Fulltext... Hierarchy... Expanded...F24F 3/056) [3]

|  | F24F 13/08 |
· | Air-flow control members, e.g. louvres, grilles, flaps, guide plates (Fulltext... Hierarchy... Expanded...F24F 7/013, Fulltext... Hierarchy... Expanded...F24F 13/06 take precedence; roof ventilation Fulltext... Hierarchy... Expanded...F24F 7/02)

|  | F24F 13/10 |
· · | movable, e.g. damper (Fulltext... Hierarchy... Expanded...F24F 13/18 takes precedence; valves in general Fulltext... Hierarchy... Expanded...F16K)

|  | F24F 13/12 |
· · · | built-up of sliding members

|  | F24F 13/14 |
· · · | built-up of tilting members, e.g. louvre

|  | F24F 13/15 |
· · · · | with parallel simultaneously tiltable lamellae [3]

|  | 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