Classifications

• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
  • B60H1/2225—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters arrangements of electric heaters for heating air
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H3/00—Air heaters
  • F24H3/02—Air heaters with forced circulation
  • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
  • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
  • F24H3/0429—For vehicles
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
  • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
  • H05B3/24—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor being self-supporting
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H1/2215—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters
  • B60H1/2218—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant the heat being derived from electric heaters controlling the operation of electric heaters
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/00007—Combined heating, ventilating, or cooling devices
  • B60H1/00021—Air flow details of HVAC devices
  • B60H2001/00185—Distribution of conditionned air
  • B60H2001/00192—Distribution of conditionned air to left and right part of passenger compartment
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H2001/2268—Constructional features
  • B60H2001/2278—Connectors, water supply, housing, mounting brackets
• • B—PERFORMING OPERATIONS; TRANSPORTING
  • B60—VEHICLES IN GENERAL
  • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
  • B60H1/00—Heating, cooling or ventilating [HVAC] devices
  • B60H1/22—Heating, cooling or ventilating [HVAC] devices the heat being derived otherwise than from the propulsion plant
  • B60H2001/2268—Constructional features
  • B60H2001/2287—Integration into a vehicle HVAC system or vehicle dashboard
• • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
  • F24—HEATING; RANGES; VENTILATING
  • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
  • F24H2250/00—Electrical heat generating means
  • F24H2250/04—Positive or negative temperature coefficients, e.g. PTC, NTC
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
  • H05B2203/022—Heaters specially adapted for heating gaseous material
  • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

• the present invention relates to a heating device, especially for air conditioning housing of a vehicle.
• Electric heating devices are known to be integrated in vehicle air conditioning units. These are either additional radiators, combined with heating radiators covered by a heat transfer fluid, in vehicles with a combustion engine or main radiators, in electric or hybrid vehicles.
• Such heating devices may comprise a support frame accommodating, on the one hand, a heating body comprising heating elements arranged parallel to each other and, on the other hand, electrical tracks supplying the heating elements from connection terminals. . More advanced heating devices also include current control means supplying the heating elements.
• Heating devices are energy intensive and therefore represent a major energy expenditure item. Automakers are therefore seeking to reduce the consumption of heaters in order to reduce the fuel consumption of vehicles equipped with an internal combustion engine or to increase the autonomy of vehicles equipped with electric or hybrid engines.
• the Applicant has noticed that passengers of the same motor vehicle do not have the same needs for heated air. At a given temperature in the passenger compartment, the driver does not feel the cold in the same way as other passengers who are more sensitive.
• the known heating devices continuously consume the same energy as the heated air is intended for a person or several persons sitting in the passenger compartment of the motor vehicle for a given air temperature synonymous with energy loss as air is unnecessarily heated.
• the invention aims to overcome at least partly the disadvantages mentioned above and proposes for this purpose a heating device, in particular for air conditioning housing of a motor vehicle in which the device comprises a heating module, configured to heat an air flow from an electric current flowing in said module, said heating module defining a plurality of zones, each zone being able to heat the flow of air towards a part of a passenger compartment of said vehicle; automobile, each of said zones having a plurality of heating elements and wherein at least one of said zones has a number of heating elements different from a number of heating elements of another of said zones.
• Such a heating device has the advantage of saving energy by reducing power consumption in favor of greater autonomy, especially when the vehicle comprises a propulsion engine of the electric or hybrid vehicle.
• the device in which it comprises at least two zones, a first zone for heating the air flow towards the driver and a second zone for heating the air flow towards a front passenger of the motor vehicle; device in which the first zone comprises a number N1 of heating elements and the second zone comprises a number N2 of heating elements, the number N1 being lower than the number N2; device in which the heating elements have a temperature-dependent electrical resistance of said heating elements; device in which the heating elements have a positive temperature coefficient; device in which, the heating elements are arranged in bars, each zone comprising a plurality of bars; - Device in which each bar is controlled independently of one another; device in which the bars of the same zone are controlled so that a voltage and an identical current are sent in each bar of the same zone; device in which each bar of the first zone comprises heating elements and at least one non-heating element; device in which a non-heating element of a bar is arranged to be adjacent to a heating element of another bar; device in which each bar of the second takes five heating elements; device in which the first zone
• the invention relates to a heating device 1, in particular for an air conditioning unit of a motor vehicle.
• Said device 1 comprises a heating module 2, configured to heat a flow of air from an electric current flowing through said heating module 2.
• Said heating module 2 presents here a substantially parallelepipedic configuration, extending on the surface. It is intended to be positioned transversely to the flow of air to be heated.
• said heating module 2 comprises, for example, a support frame, in particular of plastic material, accommodating one or more heating elements.
• Said heating elements comprise, for example, resistors with a CTP effect (for a positive temperature coefficient).
• Each heating element advantageously forms a bar 4 accommodating the PTC resistors 3 or normal resistors 3, the latter being located one after the other and electrically connected in parallel.
• the resistors 3 have a CTP effect.
• the heating element 3 may further comprise dissipators, for example fins in thermal contact relation with the resistors 3 with PTC effect. The dissipators are positioned, in particular, on either side of said resistors 3.
• Said device 1 further comprises a unit 5 for distributing and controlling the current in said heating module 2 and a power connector 6 of said current for connecting to the electrical source of the motor vehicle.
• Said distribution unit 5 advantageously forms a connection and distribution interface for electrically connecting the heating module 2, in particular the various heating elements 3, to a power supply network of the vehicle, for example a 12 V DC network ( direct current) or 48 V DC or other, including a network incorporating a battery of the vehicle.
• a power supply network of the vehicle for example a 12 V DC network ( direct current) or 48 V DC or other, including a network incorporating a battery of the vehicle.
• connection and distribution interface is meant that the distribution unit 5 is sufficient to allow the flow of current in the heating module 2, without having to provide at said heating module 2 one or more terminals of specific connection to the vehicle power supply network.
• Said distribution unit 5 is configured to modulate the current supplying the heating module 2, in particular the various elements heating, for example using controlled switches, for controlling a flow of current in said heating module 2.
• controlled switches for controlling a flow of current in said heating module 2.
• These include, in particular, transistors, for example of the Mosfet or IGBT type, operating in particular by pulse width modulation PWM (Pulse Width Modulation).
• the heating module 2 and the dispensing unit 5 are configured to be assembled to each other flexibly or not.
• the heating module 2 defines a plurality of zones 7, 8.
• the heating module 2 comprises two zones 7, 8: a first zone 7 heating the flow of air for the driver and a second zone 8 heating the air flow for the (s) front passenger (s).
• the heating module 2 comprises heating elements 3.
• the heating elements 3 comprise resistors which can be made from various materials.
• a preferred material is the PTC effect ceramic because it is a positive temperature coefficient material and has particularly advantageous properties in the invention. In particular its resistance varies according to its temperature, so the resistance increases when its temperature increases and vice versa. This advantageously makes it possible to reduce the consumption of said ceramics.
• the first zone 7 comprises a number N1 of heating elements 3.
• the second zone 8 comprises a number N2 of heating elements 3.
• the number N1 is smaller than the number N2.
• the air intended for the driver is heated by less heating elements 3 than the air that reaches the passenger.
• the heating elements 3 are arranged in the bars 4.
• Each zone 7, 8 comprises several bars 4.
• the heating elements 3 of the same bar 4 are fed by electrodes common to all the heating elements 3 of the bar 4.
• a bar 4 is present in the form of a profile comprising heating elements 3 spaced apart from each other.
• a bar 4 also comprises electrodes common to the heating elements 3.
• each bar 4 is controlled independently.
• the electric current and the applied voltage are different from one bar 4 to the other. This advantageously makes it possible to control the heating of the air more precisely.
• non-heating element means elements that do not heat, such as for example false ceramics or plastic separating elements.
• a non-heating element 9 can also be a void space.
• An empty space is particularly advantageous in that it reduces costs and facilitates the manufacture of the device 1.
• a non-heating element 9 such as a false ceramic has the advantage for the support frame to have a better structural rigidity.
• a non-heating element 9 of a bar 4 is arranged to be close to a heating element 3 of another bar 4. This advantageously makes it possible not to have a non-heating surface too important. Indeed, a too large non-heating surface could deteriorate the quality of air heating so that the driver or the passenger would feel temperature differences in the air flow.
• the first zone 7 and the second zone 8 each comprise three bars 4.
• Each bar 4 of the second zone 8 comprises five heating elements 3.
• the device 1 comprises a first bar 4 located in the first zone 7 and having four heating elements 3 followed by a non-heating element 9.
• the device 1 comprises a second bar 4 located in the first zone 7 and adjacent to the first bar 4 and having a heating element 3 followed by two non-heating elements 9 followed by two heating elements 3.
• the device 1 comprises a third bar 4 located in the first zone 7, adjacent to the second bar 4 and identical to the first bar 4. In each bar 4 the elements 3, 9 heating and non-heating are arranged in line.
• a lower number of heating elements in the first zone 7 with respect to the second zone 8 implies that the air towards the driver will be less heated. This seems a priori to reduce the comfort of the driver. However, the Applicant has noticed that the driver does not feel the temperature in the same way as the front passenger. Therefore, the lower number of heating elements 3 in the first zone 7 does not reduce the perceived thermal comfort per driver.
• the heating device 1 which has just been described has the advantage of saving energy by reducing power consumption in favor of greater autonomy especially when the vehicle comprises an electric or hybrid vehicle propulsion engine.

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• Engineering & Computer Science (AREA)
• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Mechanical Engineering (AREA)
• Chemical & Material Sciences (AREA)
• Combustion & Propulsion (AREA)
• General Engineering & Computer Science (AREA)
• Air-Conditioning For Vehicles (AREA)

Applications Claiming Priority (2)

Publications (1)

Family

ID=60382447

Family Applications (1)

Country Status (5)

Family Cites Families (12)

• 2017
  • 2017-10-24 FR FR1760050A patent/FR3072616B1/fr not_active Expired - Fee Related
• 2018
  • 2018-10-24 WO PCT/FR2018/052648 patent/WO2019081856A1/fr unknown
  • 2018-10-24 CN CN201880069520.4A patent/CN111279789A/zh active Pending
  • 2018-10-24 US US16/758,569 patent/US20200348046A1/en not_active Abandoned
  • 2018-10-24 EP EP18808432.1A patent/EP3766303A1/de not_active Withdrawn

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