Classifications

• • 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
  • B60H1/2225—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
• • 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
  • H05B3/02—Details
  • H05B3/03—Electrodes
• • 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
  • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
• • 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 invention relates to the field of ventilation, heating and / or air conditioning of a motor vehicle. It relates to additional electric heating devices, comprising one or more heating modules, intended to be mounted in a ventilation system, heating and / or air conditioning of a motor vehicle.
• the invention relates to an additional heating device comprising heating elements with electrical resistances, for example positive temperature coefficient (PTC) resistors, which make it possible to produce heat rapidly in the vehicles, especially when wants to quickly warm up the cabin.
• PTC positive temperature coefficient
• Heating devices of this type comprise a heating body comprising heat-exchanging heat exchange elements associated with said heating elements. These additional heating devices also comprise connection means which allow the electrical connection of the heating elements to a source electrical network on board the vehicle, for the power supply of the heating elements, and connection means which allow the mechanical fixing of the device. additional heating to the ventilation, heating and / or air conditioning system.
• FIG. 1 illustrates an electric heating device that can be inserted according to the state of the art in a ventilation, heating and / or air conditioning duct to heat a flow of air passing through it by dissipation of heat.
• This heating device comprises two heating modules, namely a first heating module 100 which comprises a set of two elements capable of exchanging heat 102 between which is disposed a resistive element CTP103 and a second heating module 104 which comprises a set of three heat exchangeable elements 106 between which resistive elements CTP105 and CTP107 are arranged.
• Each element capable of exchanging heat 106 is extended at one of its ends by a connecting means such as a connection terminal 108 which allows connection to an electrical network of the vehicle for the power supply of the heater.
• This type of heating device is connected to the electrical network of the vehicle via a connector, not shown here, with five channels, that is to say a connector in which five receiving slots of the means are provided. connection, for the connection according to the electrical diagram shown in Figure 2. It is noted that this type of five-way connection is widespread, especially for connecting to a power grid or a battery of heating devices without on-board electronics, and that this is particularly suitable for applications requiring a power of 1000 W or less.
• the first heating module can release a power of 330 W while the second heating module can release a power of 660 W, so that the additional heating device can release a maximum power
• the additional heater manufacturer of this type is faced with the problem of compliance with the standard five-way connector, widely imposed by car manufacturers, which limited the power released to heat the air passing through the pipe in which is placed the
• the present invention aims in particular to provide, in this context of standardization of five-way connectors, a heating device capable of providing a higher heat, without changing the size of the heat sink used.
• the present invention relates to a heating module for an electric heating device, comprising at least two elements capable of producing heat and at least three electrodes, each of these elements capable of producing heat being disposed between two electrodes, characterized in that it comprises at least two connection means each associated with an electrode
• connection means which allow to connect these electrodes to an electrical network, at least one of the electrodes connected to a connection means being connected by an electrical connection means to an electrode which is not connected to a connecting means, so as to bring these two electrodes to the same electrical potential.
• an electrode is disposed between two heat generating members, each of which heat generating members is disposed between the center electrode and an outer electrode.
• the heating module according to the invention may further comprise one or more of the following characteristics, alone or in combination:
• the electrical connection means and the connection terminals are respectively disposed at opposite ends of the heating module;
• the at least two electrodes connected to the at least two associated connection means are adjacent;
• the at least two electrodes connected by said electrical connection means are not adjacent;
• the heating module comprises two elements capable of producing heat, three electrodes, and two connection means associated respectively with an external electrode and with a central electrode in order to connect these two electrodes to an electrical network, the external electrode being connected by an electrical connection means to the electrode which is not connected to a connection means, so as to bring these two electrodes to the same electrical potential;
• the heating module comprises at least three elements capable of exchanging heat with the flow of air passing through the heating module, these three elements being each associated with an electrode;
• each electrode is disposed on at least a portion of at least one side of the heat exchange member to which it is associated;
• each electrode extends so as to define the sides of the element able to exchange the heat with which it is associated.
• the invention also relates to a heating device comprising at least one heating module as just presented.
• the heating device according to the invention may further comprise one or more of the following characteristics, alone or in combination: the heating device comprises a plurality of heating modules, among which at least one of these heating modules comprises one more electrode than it comprises connection means;
• the heating device comprises a first heating module which comprises three electrodes and three connection means each associated with an electrode, and a second heating module which comprises three electrodes and only two connection means;
• the heating device comprises a frame adapted to receive the heating modules, said frame comprising a bottom wall, said electrical connection means being secured to the bottom wall so that two electrodes are connected by the intermediate of this electrical connection means when the heating modules are arranged in the frame;
• the electrical connection means takes the form of a metal blade
• the electrical connection means is partially embedded in the bottom wall 15 of the frame.
• a heating device in which a first heating module comprises three electrodes, three elements capable of exchanging heat and three connection means, and a second heating module which comprises three electrodes, three elements capable of exchanging
• the heating device according to the invention may also comprise in
• the at least one heating module extends, when it is arranged in the frame, in a direction of general extension between a first end and a second end;
• the general extension direction of said at least one heating module is substantially longitudinal
• said at least one element capable of producing heat is a resistive element
• said at least one element capable of producing heat is a positive temperature coefficient (PTC) type resistive element; said at least one element capable of generating heat is a positive temperature coefficient (PTC) resistive element disposed in or on a support such as a bar;
• PTC positive temperature coefficient
• said at least one associated element which is capable of exchanging heat is a radiant element
• said at least one element capable of generating heat is disposed between two elements able to exchange heat;
• each electrode extends so as to define the sides of the element able to exchange the heat with which it is associated, the assembly thus formed having substantially the shape of a parallelepiped.
• the invention also relates to a ventilation, heating and / or air conditioning assembly, comprising in particular an electric heating device as just described, associated with a five-way connector for connection to an electrical network for power supply. electric heater.
• FIG. 1 and 2 are schematic representations of the structure and the electrical connection of heating modules according to the state of the art, as already mentioned in the presentation of the invention;
• FIGS. 3, 4a and 4b are representations similar to those of FIGS. 1 and 2, this time of a heating device according to one embodiment of the invention, in which a first heating module has a characteristic relative to in the state of the art;
• FIG. 5 is a perspective view of a heating device according to the invention, in which a heating module is partially visible, and a five-way connector for connecting the heating device to a source electrical network here. not shown;
• FIG. 6 is a perspective view of a heating module according to one embodiment of the invention, comprising three elements capable of
• FIG. 7 is a sectional side view of a ventilation, heating, and / or air-conditioning installation according to the invention in which a housing houses heating modules for their connection to a five-way connector and for their cross arrangement of an air circulation duct.
• FIGS. 3 to 7 are described successively to describe a set of heating modules according to the invention and their specific electrical connection (FIGS. 3, 4a and 4b), an electric heating device according to the invention (FIGS. 5 and 6). and a ventilation, heating and / or air conditioning assembly comprising such a heating device (FIG. 7).
• FIG. 3 illustrates an embodiment of the invention, specific in the number of heating modules and the number of elements capable of exchanging heat that each of these heating modules comprises.
• the heating device 2 in this embodiment comprises two heating modules 4, 6 able to extend in a conduit through which a flow of air to be heated.
• a first heating module 4 has three heat-exchangeable elements 8, 10, 12 superimposed on each other, and electrodes associated with each of the elements capable of exchanging heat 8, 10, 12. Each of these elements electrodes is extended by a tab 14 forming at a proximal end 1 6 of the heating module, a connection means, each
• tab 14 being adapted to be connected to the vehicle electrical network.
• the electrodes and the heat exchangers associated with them are at different electrical potentials so that an electric current can flow through a positive temperature coefficient (PTC) effect stone placed between two elements capable of exchange heat nearby
• PTC positive temperature coefficient
• the first heating module 4 thus comprises two resistive elements 18 and 20.
• a second heating module 6 also has three heat exchange elements 22, 24 and 26 associated with three respective electrodes, and two resistive elements 28 and 30 and it differs from the first heating module 4 in that only two connecting means 32 are arranged at the end proximal 34 of the heating module 6.
• the second heating module 6 comprises an electrical connection means 38 able to maintain at the same electrical potential the two elements capable of exchanging external heat 22 and 26, separated in the superposition 5 of elements able to exchange heat, by the element able to exchange central heat 24.
• one of the two elements 26 able to exchange external heat which has no connecting means is connected by the electrical connection means 38 to the other member 22 adapted to exchange external heat. It is notable that in this second heating module 6, there is an element capable of exchanging heat and therefore an electrode of more than connecting means.
• FIGS. 4a and 4b the electrical connection diagram of the device according to the invention is illustrated, with more particularly in FIG. 4a the connection diagram of the first heating module 4 and in FIG.
• the first heating module 4 is connected to a source electrical network in the following manner: a first electrode corresponding to one of the elements capable of exchanging external heat is connected to a first potential P1 and a second electrode corresponding to the element able to
• Exchanging central heat is connected to a second potential P2, so as to create an electric current flowing between the two electrodes and passing in particular through the corresponding resistive element 18 formed by the stones, so as to achieve a suitable heat release to heat the air passing through the duct.
• the third electrode corresponding to the other element capable of exchanging external heat and brought to a third potential P3, makes it possible similarly to create a current flowing through the corresponding resistive element 20 formed by the stones.
• the electrical connection diagram corresponding to the second heating module 6 differs from the electrical connection diagram of the first heating module 4 in that the resistive elements 28 and 30 are arranged in parallel, so as to require only two electrical connection points.
• the two electrodes corresponding to the two elements capable of exchanging heat Outputs are brought to the same electrical potential, via a single connection to the source electrical network, and electrical connection means 38 between them.
• a heating device comprising two heating modules 4, 6 as described will be able to deliver, according to the activation of this or that resistive element, a power i o corresponding to the power of a heating module (one active one resistive elements of the first heating module), two heating modules (one activates either the two resistive elements of the first heating module or the second heating module), or four heating modules (activates all).
• each heating module has three elements capable of exchanging heat, but it will be understood that the number of elements capable of exchanging heat could be higher, given that in at least one of the modules heated that includes a
• the number of connecting means will be less than the number of elements capable of exchanging heat, in particular to be able to adapt to specific connectors.
• FIG. 5 illustrates an electric type heater 2 for heating an air flow. This type of electric radiator is used in
• the heating device does not include a module
• control electronics and it can be expected to locate elsewhere on the vehicle control management of the electric heater.
• This device consists of a heating body 40 and a connection interface 42 adapted to be connected to a connector 44, here a connector to five channels, for electrically connecting the heater to the power supply on the vehicle.
• the heating body 40 consists of a frame 46 made of plastic, for example polypropylene or polyamide, inside which are integrated heating modules 4, 6, only one being visible in FIG. 5.
• the connector 44 includes a docking edge 48 and a sleeve 50 for connection to the power supply from the vehicle.
• the docking edge 48 makes it possible to securely hold the electric radiator in position in the ventilation, heating and or air conditioning system.
• FIG. 6 shows a heating module 6 according to one embodiment of the invention.
• This heating module 6 comprises three conductive electrodes 52, 54 and 56 which extend longitudinally.
• Each of these electrodes 52, 54, 56 has a general shape "C" in its longitudinal plane with their two longitudinal ends 58 and 60 folded transversely. The end
• Referenced 58 is extended longitudinally to form a tongue 62 part of a connection terminal 32 as described above with respect to Figure 3.
• the "C" shape of the electrodes 52, 54, 56 makes it possible to enclose a folded metal strip on itself at regular intervals so as to form an element
• heat exchangeable elements 22, 24, 26 are only partially shown, the unrepresented portion being identical to the visible representation on FIG. Fig.
• the electrodes 52, 54, 56 enclose the elements capable of exchanging heat 22, 24, 26 so that they bear against effect stones.
• the heating module 6 comprises two sets of six PTC effect stones 28 spaced from each other by a small gap.
• the CTP effect stones are held glued on the elements able to exchange heat by means of a thermal glue but sufficiently strong
• the electrodes and heat exchangers dedicated thereto are at different electrical potentials so as to electrically power the CTP stone 28.
• an electrode 56 is not extended by a tab, unlike the two other electrodes 52, 54.
• This electrode 56 not extended by a The tongue corresponds to one of the elements capable of exchanging external heat 22, that is to say one of the elements able to exchange heat surrounding the element able to exchange central heat 24.
• This electrode 56 is connected at the electrode 52 corresponding to the other element able to exchange external heat 26 by a metal part, forming an electrical connection means 38 for connecting to the same electrical potential these two electrodes 52, 54.
• the connection means electrical 38 is disposed at the proximal end 36 of the heating module 6, having a curvature adapted to allow the connection of the two elements capable of exchanging external heat 22, 26 without contact with the element capable of exchanging heat 24.
• Embodiment of the invention in a preferred application, with a frame 46 housing the heating modules 4, 6, inserted into an opening 64 formed in the wall 66 of a duct of a ventilation, heating and / or air conditioner.
• the frame 46 is made of a specific material, light, but sufficiently strong, for example a plastic material, polypropylene or polyamide type.
• the frame 46 has a bottom wall 68, opposite which are disposed the distal ends 36 of the modules 4, 6, and it has perforated transverse walls so that the heater can be traversed by the present air in the conduit into which the housing is inserted.
• a metal blade 70 is attached to the bottom wall 68, to form the electrical connection means 38 for the electrical connection of the two heat exchange elements 22 and 26 disposed on either side of the element adapted to exchange central heat 24 from the stack. It is interesting that the blade 70 is partially embedded in the thickness of the bottom wall 66, and that only the two ends of the blade 70 protrude from this wall 66 to form electric contact pads 72 facing each other. only elements capable of exchanging heat 22, 26 to put at the same potential.
• the frame 46 makes it possible, on the one hand, to hold the heating modules relative to each other and thus to correctly position the connection means with respect to the connector to the electrical network, and on the other hand to fix the blade. forming the electrical connection means of two elements able to exchange heat with each other. However, it would be possible to dispense with the frame, at least for the bearing bottom wall of the blade, and to make this blade integral directly with the conduit in which the o 'heating modules are housed, or to weld the blade on the electrodes associated with the elements able to exchange heat to be connected.

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• Physics & Mathematics (AREA)
• Thermal Sciences (AREA)
• Engineering & Computer Science (AREA)
• Mechanical Engineering (AREA)
• Air-Conditioning For Vehicles (AREA)
• Resistance Heating (AREA)
• Control Of Resistance Heating (AREA)

Applications Claiming Priority (2)

Publications (1)

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ID=54186078

Family Applications (1)

Country Status (6)

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Family Cites Families (25)

• 2015
  • 2015-05-26 FR FR1554719A patent/FR3036915A1/fr active Pending
• 2016
  • 2016-05-23 WO PCT/EP2016/061618 patent/WO2016188970A1/fr active Application Filing
  • 2016-05-23 EP EP16726830.9A patent/EP3305015A1/fr not_active Withdrawn
  • 2016-05-23 JP JP2017561335A patent/JP2018515897A/ja active Pending
  • 2016-05-23 US US15/575,416 patent/US20180160483A1/en not_active Abandoned
  • 2016-05-23 CN CN201680030578.9A patent/CN107980242A/zh active Pending

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