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ARRANGEMENTS OR ADAPTATIONS OF HEATING, COOLING, VENTILATING, OR OTHER AIR-TREATING DEVICES SPECIALLY FOR PASSENGER OR GOODS SPACES OF VEHICLES
Definition statement
This subclass/group covers:

Arrangements or adaptations of heating, cooling, ventilating or other air treating devices specially for passengers or goods in spaces of vehicles.

Only inventions, that relate exclusively to vehicles are covered by this subclass.

Relationship between large subject matter areas

Devices providing other air treatment (humidifying, dehumidifying, scenting, filtering) B60H 3/00

References relevant to classification in this subclass
This subclass/group does not cover:

Garments or clothes including a HVAC

Ventilating solely by opening windows, doors, roof parts or the like

Heating or ventilating devices for vehicle seats independent from the vehicle HVAC

Window or windscreen cleaners using air, e.g. defrosters

HVAC for railway vehicles

HVAC for boats / ships

HVAC for air crafts

HVAC for buildings

Heating, cooling or ventilating batteries or accumulators and independent from the cabin HVAC

Informative references
Attention is drawn to the following places, which may be of interest for search:

Filters per se

Compressors per se

Heat exchangers comprising heat generating means

Heat exchangers per se

Special rules of classification within this subclass

Refrigerated goods vehicles: B60P if the vehicle aspect is pertinent

Glossary of terms
In this subclass/group, the following terms (or expressions) are used with the meaning indicated:

HVAC

Heating, Ventilating and Air Conditioning (devices or systems)

Heating, cooling or ventilating devices (heating, cooling or ventilating devices providing other air treatment, the other treatment being relevant, B60H 3/00; ventilating solely by opening windows, doors, roof parts, or the like B60J; heating or ventilating devices for vehicle seats B60N 2/56; vehicle window or windscreen cleaners using air, e.g. defrosters, B60S 1/54)
Definition statement
This subclass/group covers:

Heating, cooling and/or ventilating (HVAC) devices for the air inside a vehicle cabin or a load area.

References relevant to classification in this group
This subclass/group does not cover:

Devices for other treatment of air (e.g. scenting, moistening, drying, filtering)

Special rules of classification within this group

B60H 1/00 and subclasses: vehicle specific documents

B60H 1/32 and subclasses: refrigerant circuit and component specific documents

{for load cargos on load transporting vehicles}
Definition statement
This subclass/group covers:

Structure of HVAC units the vehicle, air ducts.

References relevant to classification in this group
This subclass/group does not cover:

If refrigeration circuit features are characterizing

Informative references
Attention is drawn to the following places, which may be of interest for search:

Refrigerated goods vehicles in general

{ Heating, cooling or ventilating devices specially adapted for particular vehicle parts or components and being connected to the vehicle HVAC unit}
Relationship between large subject matter areas

Heating/cooling liquid urea for exhaust gas treatment:

F01N 3/2066 and Indexing Code F01N 2610/11 cool, F01N 2610/10 heat.

{for the battery (arrangement of batteries B60R 16/04)}
Definition statement
This subclass/group covers:

Battery cooling and/or heating linked to the vehicle interior air conditioning circuit.

References relevant to classification in this group
This subclass/group does not cover:

When the battery cooling circuit is completely separate from the cabin air conditioner

Informative references
Attention is drawn to the following places, which may be of interest for search:

Mounting batteries in electric vehicles

Batteries in hybrid vehicles

Monitoring batteries

Arrangement of batteries

Cooling batteries

Battery technology as such

Special rules of classification within this group

If there is an additional evaporator for cooling the battery in an airstream, also classify in B60H 1/323.

{Arrangements permitting a rapid heating of the heating liquid (B60H 1/00492, B60H 1/03 take precedence; aiding engine start by heating of engine coolants F02N 19/10)}
Relationship between large subject matter areas

Software for engine control related to temperature: F02D 41/00

Heating engine with electric means: F02N 19/04

{Heat exchangers for air-conditioning devices (B60H 1/3227 takes precedence)}
Relationship between large subject matter areas

Heat exchangers per se: F28D, F28F

{of the liquid-air type}
Definition statement
This subclass/group covers:

Coolant / air heat exchangers are classified here.

Special rules of classification within this group
{of the gas-air type (B60H 1/18 takes precedence)}
Definition statement
This subclass/group covers:

Refrigerant / air heat exchangers are classified here

References relevant to classification in this group
This subclass/group does not cover:

Air / Air heat exchangers

{ of the liquid-liquid type}
Definition statement
This subclass/group covers:

Refrigerant / water or refrigerant / refrigerant or water/water heat exchangers, e.g. stacked plates.

{Air-conditioning arrangements specially adapted for particular vehicles}
Definition statement
This subclass/group covers:

HVAC characterized by features related to the type of vehicle are classified here and in the subclasses.

Informative references
Attention is drawn to the following places, which may be of interest for search:
{for caravans or trailers}
Definition statement
This subclass/group covers:

HVAC for camping trailers, recreational vehicles and other trailers.

References relevant to classification in this group
This subclass/group does not cover:

HVAC for load transport vehicle trailers (aspects of the trailer)

HVAC for load transport vehicle trailers (aspects of the refrigeration unit itself)

Informative references
Attention is drawn to the following places, which may be of interest for search:

Refrigerated goods vehicles as such

Animal transport vehicles as such

{for vehicles carrying large numbers of passengers e.g. buses}
Definition statement
This subclass/group covers:

HVAC specific to all road vehicles carrying more passengers than a standard passenger car.

References relevant to classification in this group
This subclass/group does not cover:

Railway vehicles,

Aircrafts

Informative references
Attention is drawn to the following places, which may be of interest for search:

Buses

FTerm: 3L211/AA05

{for tractor or load vehicle cabins}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Truck cabins with sleeping accommodations

Tractor and off-road vehicle cabins

{for vehicles having an electrical drive, e.g. hybrid or fuel cell}
Relationship between large subject matter areas

When batteries or fuel cells are cooled or heated: B60H 1/00278

References relevant to classification in this group
This subclass/group does not cover:

When the fuel cell is used for driving the AC components only

Informative references
Attention is drawn to the following places, which may be of interest for search:

Hybrid vehicles

Series hybrid vehicles

Electric vehicles with batteries or fuel cells

Control

Cooling a fuel cell

Heating a fuel cell

For electric or hybrid cars

FI:B60H1/22&671

Hybrid vehicles

FTerms: 3L211/AA10

Electric vehicles

FTerms: 3L211/AA11

{ for electric vehicles having only electric drive means}
Definition statement
This subclass/group covers:

Vehicles driven by an electric motor. Includes fuel cell vehicles and vehicles having a combustion motor only for generating electric power ("range extender").

References relevant to classification in this group
This subclass/group does not cover:

When electric and hybrid vehicles are mentioned equally

If a fuel cell is used only for driving a HVAC

{ for vehicles having a combustion engine and electric drive means, e.g. hybrid electric vehicles}
Definition statement
This subclass/group covers:

All hybrid vehicles where the combustion engine can be mechanically coupled to the wheels for vehicle propulsion.

References relevant to classification in this group
This subclass/group does not cover:

When electric and hybrid vehicles are mentioned equally

{ for open or convertible vehicles}
Definition statement
This subclass/group covers:

Vehicles having body parts that can be opened (e.g. convertibles, golf carts) and this affects the air conditioning system.

Relationship between large subject matter areas
Informative references
Attention is drawn to the following places, which may be of interest for search:

Convertibles in general

Seats having "air scarfs"

{ for military, emergency, safety or security vehicles}
Definition statement
This subclass/group covers:

Vehicles like ambulances, tanks, anti bacteriological warfare vehicles etc. where the air conditioning system is specially adapted to the use of the vehicle (e.g. germ filters, pressurized cabin).

Informative references
Attention is drawn to the following places, which may be of interest for search:

Ambulances

Armored vehicles in general.

{electric}
Definition statement
This subclass/group covers:

Aspects of power supply (e.g. use of converters / inverters) to drive components (e.g. compressors) of the HVAC.

Solar power and fuel cell power used for air conditioning when the vehicle drive is not electric.

Relationship between large subject matter areas

Domestic air conditioning using natural energy, see F24F 5/0046

Semiconductor Solar Cells per se: H01L 31/042

References relevant to classification in this group
This subclass/group does not cover:

DC-DC converters

AC-AC converters

AC/DC converters

{Ventilation unit, e.g. combined with a radiator (control systems for ventilators B60H 1/00828)}
Definition statement
This subclass/group covers:

Fans in combination with other components of the HVAC unit, e.g. with heat exchangers.

Relationship between large subject matter areas

Ventilators in general: F04D 15/0005, F04D 25/08

Electrical motors: H02K

Informative references
Attention is drawn to the following places, which may be of interest for search:

Fan casings

For radial fans:

For axial fans:

Assembly / disassembly of fans:

Heaters & casing details & integrated fans

R24D19/06E

{ Air-conditioning devices using the Peltier effect (for air-conditioning in general F24F 5/0042; for refrigeration F25B 21/02; electric devices exhibiting the Peltier effect H01L 35/00)}
Definition statement
This subclass/group covers:

Thermoelectric modules (based on the Peltier or Seebeck effect) in HVAC units are classified here.

References relevant to classification in this group
This subclass/group does not cover:

Thermoelectric modules in fuel burning heaters

Informative references
Attention is drawn to the following places, which may be of interest for search:

Machines using Peltier

Thermoelectric cooling devices per se

Peltier elements

FI: B60H1/32&621G

{Valves for air-conditioning devices, e.g. thermostatic valves (valves per se F16K; thermostatic valves per se G05D 23/02)}
Definition statement
This subclass/group covers:

Vehicle HVAC characterized by specially adapted valves for refrigerant and/or coolant.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Expansion Valves

Control of expansion valves

{characterised by comprising regenerative heating or cooling means, e.g. heat accumulators}
Definition statement
This subclass/group covers:

HVAC units comprising accumulators storing heat or both heat and cold are classified here.

References relevant to classification in this group
This subclass/group does not cover:

If only cold storage is included in the HVAC

Informative references
Attention is drawn to the following places, which may be of interest for search:

Cold storages used in domestic HVAC

{Mounting or fastening of components in housings, e.g. heat exchangers, fans, electronic regulators}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Fastening elements on heat exchangers

Mounting heat exchangers in vehicle bodies

Sealings

Front end modules

{the housing or parts thereof being integrated in other devices, e.g. dashboard}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Dashboards

Dashboards having incorporated ventilation channels

{of air ducts}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Integrated air ducts

Ducts, integrated guide vanes

Ducting arrangements for domestic air treatment

{of liquid ducts, e.g. for coolant liquids or refrigerants}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Pipes, joints of fittings per se

Couplings with fluid cut-off means using two valves

Fluid-circulation arrangements for domestic cooling

Flexible pipes with four or more layers, e.g. for refrigerants

{Means for monitoring, testing or servicing the air-conditioning}
Definition statement
This subclass/group covers:

Service units for servicing the vehicle HVAC.

Includes units for purging, evacuating, filling and testing such an HVAC.

Informative references
Attention is drawn to the following places, which may be of interest for search:

For filling

For testing

{Add-on devices, e.g. heat/cooling boxes, compartment dividers, upgrade sets}
Definition statement
This subclass/group covers:

Receptacles connected to the vehicle HVAC for cooling or heating.

Partition elements used inside the vehicle cabin for separating a cooled or heated compartment.

References relevant to classification in this group
This subclass/group does not cover:

Receptacles for food or beverages with refrigerating or warming systems:

{Control members, e.g. levers or knobs (B60H 1/00985 takes precedence)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Remote control devices

Switches per se

H01K15/00

Touch switches per se

Capacitive switches

{Construction or arrangement of damper doors (control systems or circuits for damper doors B60H 1/00835)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Air flow control members for domestic air-conditioning

{Control systems or circuits characterised by their input, i.e. by the detection, measurement or calculation of particular conditions, e.g. signal treatment, dynamic models}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Monitoring multiple temperatures

{by detection of the vehicle occupants` presence; by detection of conditions relating to the body of occupants, e.g. using radiant heat detectors}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Sensors in seats

{the input being solar radiation}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Solar sensors

{the input being a vehicle driving condition, e.g. speed (B60H 1/00828, B60H 1/00864 take precedence)}
Definition statement
This subclass/group covers:

Control systems using vehicle speed as input.

Relationship between large subject matter areas

B60H 1/3208 if control of the compressor is based on the vehicle speed.

References relevant to classification in this group
This subclass/group does not cover:

If the vehicle position is characterizing

Stop/Idle related control methods

{ the input being a vehicle position or surrounding, e.g. GPS-based position or tunnel}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Specially adapted for navigation in a road network

{ the input being air quality}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Air quality sensors per se

{Damper doors, e.g. position control (construction or arrangement of damper doors B60H 1/00664; B60H 1/00864 takes precedence)}
Relationship between large subject matter areas

Means (levers, gears...) for moving doors see B60H 1/00857

{characterised by the means connecting the initiating means, e.g. control lever, to the damper door}
Definition statement
This subclass/group covers:

Drive means for doors etc are classified here.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Gears

Domestic use

{Controlling the flow of liquid in a heat pump system (controlling the properties of the refrigerant liquid, e.g. pressure or temperature, B60H 1/3204)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

The system uses a heat pump

Heat pumps

{Control systems or circuits characterised by failure of detection or safety means; Diagnostic methods}
Definition statement
This subclass/group covers:

Methods for detection of insufficient refrigerant charge (when performed by the vehicle itself) are classified here.

Relationship between large subject matter areas

See B60H 1/3233 for compressor saving methods.

L60H191/00 (B60H): detecting the charge level of refrigerant

References relevant to classification in this group
This subclass/group does not cover:

Devices for Testing HVAC are classified in B60H 1/00585

Informative references
Attention is drawn to the following places, which may be of interest for search:

Safety devices for refrigeration machines, e.g. level control of refrigerant

Synonyms and Keywords

In patent documents the following abbreviations are often used:

DE

F├╝llstandserkennung

{Control systems or circuits characterised by display or indicating devices, e.g. voice simulators (characterised by the input of sound using a voice synthesizer B60H 1/00757; B60H 1/00978 takes precedence)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Instruments in dashboards

Display or monitoring for domestic air-conditioning

the heat being derived from the propulsion plant {(B60H 1/00492 takes precedence)}
References relevant to classification in this group
This subclass/group does not cover:

The use of heat of electric motors

{from the cooling liquid of the propulsion plant and from a viscous fluid heater}
Relationship between large subject matter areas

If no cooling water of the engine is used, then classify in B60H 2001/146

Informative references
Attention is drawn to the following places, which may be of interest for search:

Viscous fluid heaters

otherwise than from cooling liquid of the plant {e.g. heat from the grease oil, the brakes, the transmission unit (B60H 1/03 takes precedence)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Liquid cooled brakes

{ the heat being derived from cooling an electric component, e.g. electric motors, electric circuits, fuel cells or batteries}
Definition statement
This subclass/group covers:

The source of heat is waste heat from electric components.

Relationship between large subject matter areas

If an electric heater is provided: B60H 1/2215

the heat being derived otherwise than from the propulsion plant {(B60H 1/0025, B60H 1/00492 and B60H 1/03 take precedence)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Water heaters

Air heaters

Details of heaters in general

{ the heat being derived from burners (burners in general F23C, F23D, F24H 9/18)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Fuel burning heaters with evaporation means

Exhaust systems

Fuel supply

Controlling combustion

Ignition means

Fluid fuel water heaters

Vehicle heating

{ the heat being derived from electric heaters (in general H05B; for electric traction vehicles B60L 1/02)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Supply of electric power to heating circuits in electric vehicles

Electric resistance heating for domestic use

Electric water heaters in general

Electric heating for vehicles

{ controlling the operation of electric heaters}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Helically or spirally coiled water heaters with electrical energy supply

{ arrangements of electric heaters for heating an intermediate liquid (B60H 1/034 takes precedence)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Heating means for windscreen-cleaning liquid

Air heaters using electric energy supply

Water heaters specially adapted for vehicle systems

{ characterised by the location of ventilation devices in the vehicle}
Definition statement
This subclass/group covers:

Ventilating systems in a vehicle characterized by the position of the nozzles relative to the vehicle.

{ located in the rear area}
Special rules of classification within this group

All documents of the former EC B60H1/24F are classified here.

{ located in the interior of the vehicle or in or below the floor}
Special rules of classification within this group

All documents from former EC class B60H1/24G are classified here.

{ Disposition of several air-diffusers in a vehicle for ventilation-air circulation in a vehicle cabin}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Dashboards having incorporated ventilation channels

{using one-way valves}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Check valves

Air-flow control members with movable members for domestic air-conditioning

Ventilating openings in vehicle exterior; Ducts for conveying ventilating air
Informative references
Attention is drawn to the following places, which may be of interest for search:

Radiator guards

{Openings in or on the vehicle roof}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Roof Hatches per se

the openings being situated directly in front of vehicle front window
Informative references
Attention is drawn to the following places, which may be of interest for search:

Cowls for vehicles

{using absorption or adsorption (in general F25B 15/00, F25B 17/00)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Liquids for absorption type circuits

Sorbtion machines in general

{using evaporation, i.e. not including a compressor, e.g. involving fuel or water evaporation (B60H 1/3235 takes precedence; in general F25B 19/00, F25D 7/00)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Domestic air-condition systems using evaporation

Machines using evaporation of refrigerant without recovery of the vapour

Devices using evaporation without recovery of the vapour

Heat-exchange apparatus having stationary conduit assemblies for one heat-exchange medium only, the media being in contact with different sides of the conduit wall, using the cooling effect of natural or forced evaporation

In case there is a separate airflow not in contact with the wet elements

{using compression (B60H 1/3233 takes precedence; in general F25B, F25D)}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Refrigerant liquids

{characterised by the compressor driving arrangements, e.g. clutches, transmissions or multiple drives (B60H 1/3208, B60H 1/3226 take precedence)}
Definition statement
This subclass/group covers:

Hybrid compressor drives (mechanic and electric) are classified here

{characterised by comprising auxiliary or multiple systems, e.g. plurality of evaporators, or by involving auxiliary cooling devices}
Relationship between large subject matter areas

If batteries are cooled, use B60H 1/00278.

{particularly adapted for load transporting vehicles (B60H 1/3226 takes precedence)}
Definition statement
This subclass/group covers:

Refrigerant units for truck cargo space

Relationship between large subject matter areas

B60H 1/00014 if the aspects of the vehicle are characterizing.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Refrigerated goods vehicles

{characterised by condensed liquid drainage means}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Evacuating condensate in domestic air-conditioning

Nozzles; { Air-diffusers }(dispositions of air diffusers in a vehicle B60H 1/247)
Informative references
Attention is drawn to the following places, which may be of interest for search:

Outlets for directing or distributing air into rooms or spaces for domestic air-conditioning

F24F 13/06 , F24F 13/08 F24F 13/10 , F24F 13/14. FI: B60H1/34&611 , 631, 651, 671 FTerms: 3L081/...

Air-flow control members, e.g. louvres, grilles or flaps for domestic air-conditioning

Outlets for windshield defrosting

{ Outlets providing a vortex, i.e. a spirally wound air flow}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Domestic air-conditioning

Other air-treating devices
Definition statement
This subclass/group covers:

Devices for treating air inside or flowing into a cabin or load area of a vehicle, characterized by other aspects than heating, cooling or ventilation.

These aspects are e.g: Scenting, Deodorizing, Ionizing, Humidity control, Filtering.

Relationship between large subject matter areas

Control methods using detection of air quality or humidity as input: B60H 1/00735.

{Adding substances other than water to the air, e.g. perfume, oxygen}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Human necessities

Air treatment other than cooling or heating in domestic air-conditioning systems

F24F 3/12, F24F3/18, R24F201/18

{Electrically conditioning the air, e.g. by ionizing}
Informative references
Attention is drawn to the following places, which may be of interest for search:

Deodorizing by ionizing of air,

By UV-Light

Air stream with ions

Ion type

FI-Terms: B60H3/06&A

Deodorizing

FI-Terms B60H3/00&F

Moistening

FI-Terms B60H3/00&Z

Electric means for purifying

Ionizing

R24F201/14

Odorizing

R24F201/18

Sterilizing with UV light

R24F201/12A

{Smell or pollution preventing arrangements }(B60H 3/0007, B60H 3/0071, B60H 3/02, B60H 3/06 take precedence)
Definition statement
This subclass/group covers:

Cleaning or disinfecting of the interior of the HVAC for preventing or removing smell or malodour, e.g. malodour caused by fungi or accumulated dirt.

Informative references
Attention is drawn to the following places, which may be of interest for search:

Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses

Cleaning internal surfaces in general

Cleaning substances

Cleaning by jets

Cleaning by using chemical substances

Moistening; { Devices influencing humidity levels, i.e. humidity control (B60H 1/3202, B60H 1/3207 take precedence)}
Definition statement
This subclass/group covers:
  • Means for reducing or increase of air humidity.
  • Control of air humidity.
Informative references
Attention is drawn to the following places, which may be of interest for search:

Domestic air-conditioning systems with air treatment by humidification or dehumidification

Air-humidification of domestic rooms

Filtering {(B60H 3/0078 takes precedence)}
Definition statement
This subclass/group covers:

Cleaning outside or recirculated air entering the vehicle cabin by the use of filters.

References relevant to classification in this group
This subclass/group does not cover:

Cleaning the environmental atmosphere (not the air for the cabin) by a filter in a vehicle

B01D, L01D259/70

Informative references
Attention is drawn to the following places, which may be of interest for search:

For general filter aspects

Filtering by adsorption or absorption

Filter condition indicators

Filters with stationary adsorbents

Arrangement or mounting of filters for domestic air-conditioning

This page is owned by Office of Patent Classification.
Last Modified: 10/11/2013