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.

 F24D
DOMESTIC- OR SPACE-HEATING SYSTEMS, e.g. CENTRAL HEATING SYSTEMS; DOMESTIC HOT-WATER SUPPLY SYSTEMS (preventing corrosion C23F; water supply in general E03; elements and components of the systems F24H; combined heating and refrigeration systems F25B; removing furring F28G; control in general G05)
 F24D 1/00 - 
F24D 12/00
Central heating systems, i.e. systems in which heat generated or stored at central sources is distributed by means of a transfer fluid to the spaces or areas to be heated
 F24D 1/00
Steam central heating systems (F24D 11/00 takes precedence)
 F24D 1/02
·  operating with live steam
 F24D 1/04
·  operating with exhaust steam
 F24D 1/06
·  operating with superheated steam
 F24D 1/08
·  Feed-line arrangements, e.g. providing for one-pipe system
 F24D 3/00
Hot-water systems (F24D 11/00 takes precedence)
 F24D 3/02
·  with forced circulation, e.g. by pumps (pump constructions F04)
 F24D 3/04
·  with the water under high pressure
 F24D 3/06
·  ·  Arrangements or devices for maintaining high pressure
 F24D 3/08
·  in combination with systems for domestic hot-water supply
 F24D 3/10
·  Feed-line arrangements, e.g. providing for heat-accumulator tanks, expansion tanks
 F24D 5/00
Hot-air systems (F24D 11/00 takes precedence; conditioning of air F24F); Exhaust-gas central heating systems
 F24D 5/02
·  operating with discharge of hot air into the space or area to be heated
 F24D 5/04
·  ·  with return of the air to the air heater
 F24D 5/06
·  operating without discharge of hot air into the space or area to be heated
 F24D 5/08
·  ·  with hot air led through radiators
 F24D 5/10
·  ·  with hot air led through heat-exchange ducts in the walls, floor, or ceiling
 F24D 7/00
Systems employing heat-transfer fluids not covered by groups F24D 1/00-F24D 5/00, e.g. oil, salt, gas (F24D 11/00 takes precedence)
 F24D 9/00
Combinations of the systems covered by two or more of groups F24D 1/00-F24D 7/00 (F24D 11/00 takes precedence)
 F24D 9/02
·  Combinations of hot-water and steam systems
 F24D 11/00
Systems using heat accumulated in storage masses
 F24D 11/02
·  using heat pumps
 F24D 12/00
Other central heating systems
 F24D 13/00 - 
F24D 15/00
Other space- or area-heating systems
 F24D 13/00
Electric heating systems
 F24D 13/02
·  solely using resistance heating, e.g. underfloor heating
 F24D 13/04
·  using electric heating of heat-transfer fluid in separate units of the system
 F24D 15/00
Heating systems consisting of self-contained heating units, e.g. storage heaters (F24D 13/00 takes precedence); Other space-heating systems
 F24D 17/00
Domestic hot-water supply systems (combined with domestic- or space-heating systems F24D 1/00-F24D 15/00)