|  | 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 words 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; 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; humidifying gases Fulltext... Hierarchy... Expanded...B01F 3/02; Fulltext... Hierarchy... Expanded...B01F 3/04; 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)

|  | 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.

|  | 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 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

|  | 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 (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 3/16 |
· · | 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 7/00 |
Ventilation

|  | F24F 7/02 |
· | Roof ventilation (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 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)

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

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

|  | 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 13/08 |
· | Air-flow control members, e.g. louvres, grilles, flaps, guide plates (Fulltext... Hierarchy... Expanded...F24F 13/06 takes precedence; roof ventilators 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 13/16 |
· · · | built-up of parallelly-movable plates

|  | F24F 13/18 |
· · | specially adapted for insertion in flat panels, e.g. in door or window-pane