CPC Definition - Subclass F24H
This place covers:
Self-contained heaters comprising heat generating means for heating fluids:
- Water heaters having heat generating means
- Air heaters having heat generating means
- Fluid heaters using a heat pump
- Combined water and air heaters
- Storage heaters in which energy is stored as heat in masses staying in the heater
- Fluid heaters having means specially adapted for extracting latent heat from flue gases by means of condensation
- Details thereof, including constructional details and control means for fluid heaters.
- Control of fluid heaters
Subclass F24H covers heater as such, i.e. the arrangements where the heat is generated.
Heaters integrated in a heating system adapted for domestic- or space-heating application, in which the heat is transmitted by a circuit to a consumer, are classified in F24D.
Subclass F24H concerns to the function of heating in general. Heaters adapted for special applications are classified both in F24H and in the relevant subclass for the application:
- apparatus for making beverages A47J.
The components of a heater are also classified in the relevant subclasses:
This place does not cover:
Steam generation |
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Arrangement or adaptation of heating devices specially for passenger or goods spaces of vehicles, the heat being derived otherwise than from the propulsion plant | |
Air-heating in railway vehicles | |
Air-heating in ships or other waterborne vessels | |
Arrangements or adaptations of air-treatment apparatus for aircraft crew or passengers, or freight space, the air being heated | |
Domestic- or space-heating systems; Domestic hot-water supply systems |
Attention is drawn to the following places, which may be of interest for search:
Protecting plants by heating in gardens, orchards or forests | |
Baking ovens and apparatus for baking | |
Apparatus for making beverages | |
Forge furnaces | |
Heat-transfer, heat-exchange or heat-storage materials | |
Tube furnaces for thermal non-catalytic cracking | |
Devices, e.g. valves, for venting and aerating enclosures | |
Steam traps or like apparatus | |
Combustion apparatus | |
Heat source: Burners | |
Domestic stoves or ranges | |
Heat source: Solar and geothermal heating means | |
Heat source: Heat pumps | |
Driers for solid material | |
Furnaces, kilns, ovens, retorts | |
Heat exchangers | |
Storage tanks | |
Controlling temperature | |
Electric heating elements and arrangements |
In this place, the following terms or expressions are used with the meaning indicated:
Water includes other liquids;air includes other gases or gas mixtures | "water" and "air" always mean respectively, the liquid and gas to be heated |
Furnace tubes | means tubes inside the heater wherein combustion is performed |
Fire tubes | means tubes inside the heater wherein combustion is performed |
Water tubes | means the tubes inside the heater through which water to be heated flows |
Heater | means apparatus including both heat generating means and means for transferring the generated heat to water or air |
This place covers:
Water heaters having generating means of the following kind:
- With reduced pressure or of the vacuum steam type;
- Electrically heated;
- Using fluid fuel;
- Immersion haters for open containers of ponds;
- Using solid fuel;
- Special heating applications, i.e. heated bath tubs, vehicles;
- portable or mobile heaters;
- packaged or self-contained boilers comprising water heaters with control devices and pump in a single unit;
- Continuous-flow heaters, i.e. which heat is generated only while the water is flowing, said heater arranged either with water separated form the heating medium or with direct contact of the water with the heating medium;
- Water storage heaters;
- Water heaters other than continuous-flow or water storage heaters, e.g. water-heaters for central heating;
- Water heaters having plural combustion chambers;
- Water heaters for central heating incorporating heaters for domestic water.
The group heaters of the reduced pressure of vacuum steam type (F24H 1/0009) is rarely used. Steam boilers as such are covered by F22B.
The group heaters using solid fuel (F24H 1/0063) is rarely used. Domestic stoves or ranges with additional provisions for heating water are covered by F24B 9/00, F24C 13/00.
In the group water storage heaters (F24H 1/18) the water muss be able to flow outside the storage tank for being used. If the storage mass, which can be water, stays in the tank and there is a further intermediate medium for conveying the heat, this arrangement is only classified in F24H 7/00.
Water heaters with a heating pump as heat source are classified in F24H 4/00.
Water heaters extracting latent heat from flue gases (condensing boilers) are classified in F24H 8/00.
The group F24H 1/48 covers water heaters for central heating incorporating heaters for domestic water, i.e. the heaters (tank, heat exchanger) for domestic water have to be within the boiler. If the domestic water heaters are located outside of the boiler, the invention is classified in F24D 3/08.
Heat exchangers which are exclusively used in boilers are classified in this group. Heat exchangers being able to be used in a boiler and elsewhere are classified both in this group and in the relevant subclass in F28.
Arrangement or mountings of control or safety device for water heaters are covered by F24H 9/20.
This place does not cover:
Steam boilers |
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Domestic stoves or ranges with additional provisions for heating water |
Attention is drawn to the following places, which may be of interest for search:
Water heaters characterised by the use of heat pumps | |
Liquid storage heaters using heat pumps | |
Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release | |
Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensate | |
Details of fluid heaters | |
Solid fuel fired boiler | |
Cooking vessels | |
Apparatus for making beverages | |
Apparatus for making beverages | |
Bathing devices for therapeutic purposes | |
Windscreen washers comprising a water heater | |
Details concerning the thermal insulation of a container | |
Details of washing machines | |
Plumbing installations for fresh water having heating or cooling apparatus | |
Systems for heating the water content of swimming pools | |
Heating or cooling pipes or pipe systems | |
Details of baffles or deflectors within the combustion chamber | |
Hot-water central heating systems in combination with systems for domestic hot-water supply | |
Central heating systems using heat accumulated in storage masses | |
Solar heating of swimming pools | |
Storing heat collected by solar heat collectors | |
Storing geothermal heat | |
Tubular heat-exchangers | |
Tubular elements, Assemblies of tubular elements | |
Ohmic-resistance heating |
Attention is drawn to the following places, which may be of interest for search:
Water heaters for central heating incorporating heat exchangers for domestic water |
Attention is drawn to the following places, which may be of interest for search:
Containers with thermal insulation in general |
Attention is drawn to the following places, which may be of interest for search:
Linings for containers in general |
Attention is drawn to the following places, which may be of interest for search:
Water heaters for central heating incorporating heaters for domestic water |
Attention is drawn to the following places, which may be of interest for search:
Water heaters other than continuous-flow or water storage heaters with water chamber arranged adjacent to the combustion chamber or chambers | |
Water heaters other than continuous-flow or water storage heaters with water contained in separate elements | |
Water heaters other than continuous-flow or water storage heaters with water tube or tubes | |
Water heaters other than continuous-flow or water storage heaters with combinations of two or more of said water heaters |
Attention is drawn to the following places, which may be of interest for search:
Water heaters other than continuous-flow or water storage heaters with water mantle surrounding the combustion chamber or chambers | |
Water heaters other than continuous-flow or water storage heaters with water contained in separate elements | |
Water heaters other than continuous-flow or water storage heaters with water tube or tubes | |
Water heaters other than continuous-flow or water storage heaters with combinations of two or more of said water heaters |
Attention is drawn to the following places, which may be of interest for search:
Water heaters other than continuous-flow or water storage heaters with water mantle surrounding the combustion chamber or chambers | |
Water heaters other than continuous-flow or water storage heaters with water chamber arranged adjacent to the combustion chamber or chambers | |
Water heaters other than continuous-flow or water storage heaters with water tube or tubes | |
Water heaters other than continuous-flow or water storage heaters with combinations of two or more of said water heaters |
Attention is drawn to the following places, which may be of interest for search:
Water heaters other than continuous-flow or water storage heaters with water mantle surrounding the combustion chamber or chambers | |
Water heaters other than continuous-flow or water storage heaters with water chamber arranged adjacent to the combustion chamber or chambers | |
Water heaters other than continuous-flow or water storage heaters with water contained in separate elements | |
Water heaters other than continuous-flow or water storage heaters with combinations of two or more of said water heaters |
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Central heating systems |
This place covers:
Air heaters sorted by the type of heat source, e.g. using electric energy supply or using fluid combustible or using solid combustibles.
Air heaters with forced circulation of air.
Air heaters with a main heat source and additional heating arrangements.
Air heaters where the air is heated at the same location where the heat is generated.
Central heating radiators are not considered as an air heater as covered in this group. The central heating radiators as such are covered by F28D 1/00. Central heating radiators comprising additional heating means located within the radiator are covered by F24D 13/04.
Hot-air central heating systems are covered by F24D 5/00.
Ventilation systems which can be heated and cooled are covered by F24F.
Air heaters adapted for special applications are classified both in F24H 3/00 and in the relevant subclass for the application:
- welding B23K
- hair dryer A45D 20/00
- vehicles B60H
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Arrangement or adaptation of heating devices specially for passenger or goods spaces of vehicles, the heat being derived otherwise than from the propulsion plant | |
Interaction of the air heater with the vehicle (mounting a heater within a vehicle) | |
Hot air central heating system | |
Central heating radiators for heating air comprising an additional electric heating means |
Attention is drawn to the following places, which may be of interest for search:
Air heaters characterised by the use of heat pumps | |
Storage heaters, i.e. heaters in which the energy is stored as heat in masses for subsequent release | |
Fluid heaters characterised by means for extracting latent heat from flue gases by means of condensation | |
Hair dryers | |
Towel racks, Towel rails, Towel rods, Towel rolls | |
Welding wherein the heat is provided by a hot air stream | |
Domestic stoves or ranges with additional provisions for convection heating of air | |
Air conditioning devices which provide heated and cooled air | |
Lighting fixture and air heating means | |
Central heating radiators as such |
In this place, the following terms or expressions are used with the meaning indicated:
For air heaters using electric energy supply, the term
Heating medium | means the resistive element, PTC/NTC element, induction element, microwave generator, Peltier element or lamp |
Direct contact | means that the resistive element, electrodes and fins are bond together without additional elements (e.g. tubes or plates) in between |
This place covers:
Liquid or gas heaters using heat pumps as heat source.
Examples of places where the subject matter of this place is covered when specially adapted, used for a particular purpose, or incorporated in a larger system:
Other domestic or non-central space-heating system, consisting of self-contained heating units |
Attention is drawn to the following places, which may be of interest for search:
Combined water and air heaters | |
Air conditioning devices using heat pumps which provide heated and cooled air | |
Heat pump systems in general | |
Heat pumps (heat of condenser is used for a specific purpose, e.g. heating tap water) | |
Heat storage plants or apparatus in general |
This place covers:
Combined water and air heaters.
This place covers:
Storage heaters ranked by the kind of the heat source, in which the heat storing material stays in the heater and wherein the released heat is either conveyed to a transfer fluid, e.g. air or water, or the released heat is radiated.
Attention is drawn to the following places, which may be of interest for search:
Water storage heaters | |
Storage materials | |
Material undergoing a change of physical state when being used | |
Domestic stoves or ranges with additional heat storage masses | |
Central heating systems using heat accumulated in storage masses | |
Electric heating systems with resistances incorporated in construction elements, e.g. panels | |
Air-conditioning systems or apparatus not covered by F24F 1/00 or F24F 3/00 e.g. using solar heat, combined with household units such as an oven or water heater | |
Heat storage plants or apparatus |
This place covers:
Fluid heaters arranged in a self-contained manner:
- having heat-generating means specially adapted for extracting latent heat from flue gases by means of condensation located within the heater
- having means for moistening the combustion air with condensate from the combustion gases
- having means for removing condensate from the heater.
This group covers the arrangements of condensing boilers where the condensing heat exchanger is located inside the boiler.
The arrangements where the condensing heat exchanger is located outside the boiler (e.g. economizer) are covered by F24D 12/02 combined with F24D 2200/18.
Attention is drawn to the following places, which may be of interest for search:
Arrangements for treating smokes in the chimneys, in particular coolers | |
Fumes purifications: water draining devices associated with fumes | |
Flue gas condenser |
This place covers:
Details of liquid/water heaters and gas/air heaters.
Casings; Cover lids; Ornamental panels therefore (not for central heating radiators).
Arrangement of mountings or supports therefore (not for central heating radiators).
Connecting heaters to circulation pipes.
Connecting different sections within water-heaters.
Arrangements for water drainage.
Arrangement or mounting of grates, burners, or heating elements within the heater.
Arrangement or mounting of control or safety devices.
Combustion air preheating arrangements.
Fluid heaters having electric generators.
Details about the kind of electrical heat generating means.
This group covers details concerning the device generating the heat.
Details concerning central heating radiators are covered by F24D.
Valves which are exclusively used in boilers are classified in this group. Valves being able to be used elsewhere are classified in the relevant subclass in F16K.
Pipe joints which are exclusively used in boilers are classified in this group. Pipe joints being able to be used elsewhere are classified in the relevant subclass in F16L.
Details concerning the control of a boiler are covered in F24H 9/20. Arrangements for control of temperature and algorithm therefore are also covered in G05D 23/00. In the particular case of electric heating means, the controls/automatic switching for the electric heater are also covered by H05B 1/02.
Attention is drawn to the following places, which may be of interest for search:
Control valves | |
Safety devices for burners | |
Constructional details of combustion chambers, not otherwise provided for | |
Regulating or controlling combustion | |
Connecting central heating radiator to circulation pipes | |
Arrangements for mountings or supports for central heating radiators | |
Casings, cover lids or ornamental panels for central heating radiators | |
Arrangements for drainage, venting or aerating in domestic- or space-heating systems | |
Casings, Header boxes, Auxiliary supports for elements, Auxiliary members within casings | |
Arrangements for connecting different sections of heat exchange elements, e.g. of radiators |
This place does not cover:
Arrangements for connecting heaters to circulation pipes |
Attention is drawn to the following places, which may be of interest for search:
In radiators |
Attention is drawn to the following places, which may be of interest for search:
Valves for drainage | |
Arrangements for water drainage in pipes or pipe systems in general | |
Arrangements for water drainage in domestic-or space-heating systems |
Attention is drawn to the following places, which may be of interest for search:
Room temperature | |
Outdoor temperature |
Attention is drawn to the following places, which may be of interest for search:
Remote controls using telephone networks for air conditioning devices | |
Remote controls using Internet communication for air conditioning devices | |
Information and communication technology specially adapted for the Internet of Things [IoT] |
Attention is drawn to the following places, which may be of interest for search:
Small-scale combined heat and power [CHP] generation systems specially adapted for domestic heating, space heating or domestic hot-water supply |