WO2023031150A1 - Electric radiator of a ventilation, heating and/or air-conditioning system - Google Patents

Electric radiator of a ventilation, heating and/or air-conditioning system Download PDF

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Publication number
WO2023031150A1
WO2023031150A1 PCT/EP2022/074014 EP2022074014W WO2023031150A1 WO 2023031150 A1 WO2023031150 A1 WO 2023031150A1 EP 2022074014 W EP2022074014 W EP 2022074014W WO 2023031150 A1 WO2023031150 A1 WO 2023031150A1
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WO
WIPO (PCT)
Prior art keywords
heating
heating elements
elements
plates
heating body
Prior art date
Application number
PCT/EP2022/074014
Other languages
French (fr)
Inventor
Romain DELCOURT
Serif KARAASLAN
Jonathan FOURNIER
Erwan Gogmos
Original Assignee
Valeo Systemes Thermiques
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Valeo Systemes Thermiques filed Critical Valeo Systemes Thermiques
Publication of WO2023031150A1 publication Critical patent/WO2023031150A1/en

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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
    • F24H3/0441—Interfaces between the electrodes of a resistive heating element and the power supply means
    • F24H3/0447—Forms of the electrode terminals, e.g. tongues or clips
    • 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
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC
    • 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
    • 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
    • H05B2203/016—Heaters using particular connecting means
    • 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

Definitions

  • the present invention falls within the field of motor vehicle ventilation, heating and/or air conditioning systems, and it relates more particularly to an electric radiator of such ventilation, heating and/or air conditioning systems.
  • Ventilation, heating and/or air conditioning system making it possible to circulate a flow of air towards the passenger compartment of the motor vehicle, and, depending on the temperature of the passenger compartment desired by the driver and/or the passengers of the motor vehicle, heating and/or cooling the flow of air sent into the passenger compartment.
  • ventilation, heating and/or air conditioning installations thus comprise at least one member for circulating the air flow and an electric heater capable of heating the air flow circulated towards the passenger compartment.
  • the electric radiators of these ventilation, heating and/or air conditioning installations comprise a heating body in which heating elements, for example in the form of tubes, are arranged next to each other across a flow of air to be heated.
  • Such electric heaters generally comprise at least one electronic control device for the heating elements comprising a printed circuit board on which various electronic components are installed. The electronic components participate in generating a control instruction to be transmitted to the heating elements so that they heat up. Therefore, the heating elements are able to rise in temperature and the flow of air circulating between the heating elements of the electric heater is heated by circulating between the heating elements.
  • the heating elements are connected to the printed circuit board, if necessary by transistors fixed on the printed circuit board, so that the control instructions can be transmitted to the heating elements.
  • the heating elements By being fixed in this way to the printed circuit board, the heating elements extend mainly in a direction perpendicular to an extension plane of the printed circuit board.
  • each heating element is connected to the printed circuit board at one of its longitudinal ends, that closest to the printed circuit board, and all of the resistive elements within the heating elements are powered by the same electric current passing through this connection, so that a substantially uniform quantity of heat is given off over the entire principal extension dimension of the heating element.
  • the heating body may be desired to configure the heating body so as to be able to split it into several particular heating zones.
  • it may be desired to supply electric current to resistive elements present in a first zone of the heating body, to heat part of the air flow brought through this heating body, and simultaneously to let inactive of other resistive elements so as not to expend electrical energy while the part of the air flow brought into contact with these other resistive elements does not have to be heated.
  • the arrangement of the heating elements mentioned above implies a uniform distribution of heat within the same heating element so that the separation of the heating body into several selectively activatable heating zones can only be achieved by selective ignition of the elements. heaters, and therefore only in a direction of juxtaposition of the heating elements, parallel to the extension plane of the printed circuit board.
  • the present invention proposes an alternative solution to existing solutions and has as its main subject a new layout of the heating elements which allows a different distribution of the heating zones which can be activated selectively.
  • the main subject of the invention is an electric radiator of a ventilation, heating and/or air conditioning installation, the electric radiator comprising at least one heating element equipped with heating elements arranged one to sides of the others so as to delimit between them a circulation space for a flow of air to be heated, the electric radiator comprising at least one electronic control unit configured to supply power and control the operation of the heating elements and a box in which the electronic control unit is housed, the body heater being fixed to the casing, the casing comprising a bottom wall facing the heating body extending in a main plane of extension, characterized in that the heating elements of the heating body extend mainly in one direction longitudinal, parallel to the main plane of extension of the back wall.
  • the heating elements are arranged one above the other in a stacking direction perpendicular to the main plane of extension of the bottom wall. It is understood that the heating elements are arranged in parallel, each extending at a distance from the bottom wall which is different from the corresponding distance from the other heating elements.
  • first set of heating elements and a second set of heating elements, the first set of heating elements being arranged between the bottom wall of the housing and the second set of heating elements.
  • the electronic control unit is capable of transmitting a first control instruction to the first set of heating elements and a second control instruction to the second set of heating elements, the control instructions thus being able to be similar to or different from one the other. It is understood here that the first set of heating elements can be heated in a similar or separate way from the second set of heating elements, thus generating two separate heating zones from one another.
  • At least one heating element of the heating body comprises resistive elements and plates forming electrodes, each of the plates being extended longitudinally at one end by a connection member, the heating element having at each of its longitudinal ends a connecting member of a plate.
  • the plates forming the electrodes are arranged on either side of the resistive elements, enclosing them.
  • the connection member of a plate is configured to be connected, via a connection means, at least electrically to the printed circuit board of the electronic control unit.
  • a connection means is common to several connection members, and more precisely to connection members respectively associated with one of the heating elements of the heating body.
  • the heating elements are configured and arranged with respect to each other so that several connection members form an alignment along the stacking direction of the heating elements.
  • the heating body has a front face and a rear face so that the airflow is able to circulate through the heating body from the front face towards the rear face, at the at least one heating element of the heating body having a front edge oriented towards the front face of the heating body and a rear edge oriented towards the rear face of the heating body, the connecting members of the plates of a heating element aligning the along a direction parallel to the main extension direction of the heating element being closer to the leading edge or the trailing edge.
  • the electrical connection is thus facilitated by appropriate connection means arranged at each longitudinal end of a heating element, by arranging these connection means close to a front or rear edge depending on the edge of which the connection members of the same heating element.
  • the heating body comprises a first set of heating elements and a second set of heating elements, the connecting members of the plates of the first set of heating elements being arranged closer to the edge front while the connecting members of the plates of the second set of heating elements are arranged closer to the rear edge of the heating elements.
  • the heating body comprises a first electrical connection assembly and a second electrical connection assembly each disposed at one of the longitudinal ends of the heating elements, each of the electrical connection assemblies comprising at least one connection pin electrically connecting members for connecting the plates of the heating elements to the electronic control unit.
  • the pin ensures an electrical connection between several connecting members of several plates and the printed circuit board of the electronic control unit.
  • the pins extend parallel to each other, each at one of the longitudinal ends of the heating elements.
  • each of the electrical connection assemblies extends from the electronic control unit perpendicular to the bottom wall of the box.
  • each of the electrical connection assemblies extends parallel to the other electrical connection.
  • each of the electrical connection assemblies comprises a first connection pin connected to the connection members of the plates of the first set of heating elements, and a second connection pin separate from the first connection pin and connected to the connecting members of the plates of the second set of heating elements.
  • At least one heating element comprises several resistive elements, in the form of PTC effect stones, interposed between two plates each forming an electrode.
  • the heating body comprises a support frame for the heating elements, the frame having side walls extending perpendicularly to the bottom wall and between which the heating elements extend, the frame comprising at least one bar extending parallel to the main direction of extension of the heating elements between the side walls of the frame and participating in delimiting at least two heating zones through which an air flow can circulate.
  • the present invention also relates to a ventilation, heating and/or air conditioning installation, comprising at least one ventilation device capable of forcing the circulation of a flow of air through the ventilation installation, heating and/or air conditioning and an electric heater conforming to any of the preceding characteristics and through which the air flow is heated.
  • the ventilation, heating and/or air conditioning installation comprises two heating ducts, one of the ducts guiding at least part of the air flow towards one heating zones of the electric radiator, the other duct guiding at least part of the air flow towards the other heating zone of the electric radiator.
  • FIG. i is a representation in perspective of an electric heater according to the invention.
  • FIG. 2 is a longitudinal section of the radiator shown in Figure i;
  • FIG. 3 is a perspective representation of a heating body of the radiator shown in Figure 1;
  • FIG. 4 is a perspective detail view of several heating elements of the heating body shown in Figure 3;
  • FIG. 5 is a longitudinal section of a heating element shown in Figure 4.
  • FIG. 6 is a top view of a heating element shown in Figure 4.
  • variants and different embodiments of the invention may be associated with each other, in various combinations, insofar as they are not incompatible or exclusive with respect to each other.
  • variants of the invention comprising only a selection of characteristics described below in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage and/or to differentiate the invention from the prior state of the art.
  • a longitudinal direction corresponds to a main direction of elongation of a heating element, this longitudinal direction being parallel to a longitudinal axis L of an L, V, T illustrated in the figures.
  • a vertical direction corresponds to a direction along which a side wall of a support of the heating element of the radiator mainly extends, this vertical direction being parallel to a vertical axis V of the mark L, V, T and this axis vertical V being perpendicular to the longitudinal axis L.
  • a transverse direction corresponds to a direction parallel to a transverse axis T of the reference L, V, T, this transverse axis T being perpendicular to the longitudinal axis L and the axis vertical V.
  • FIG. 1 is illustrated an electric heater 1 according to the invention configured to be installed at a ventilation, heating and / or air conditioning installation of a vehicle.
  • the electric radiator i is used in this type of installation, for example to heat a flow of air circulating in the installation, heating and/or air conditioning through said electric radiator i.
  • the electric heater 1 comprises at least one heating body 2 equipped with heating elements 4 arranged alongside each other so as to delimit between them a circulation space of a flow of air to be heated. More particularly, each heating element 4 is arranged at a distance from at least one neighboring heating element 4, an air flow being able to circulate between these two heating elements 4 in order to be heated.
  • the heating body 2 has a front face AV and a rear face AR so that the flow of air to be heated circulates mainly transversely from the front face AV towards the rear face AR of the heating body 2.
  • the elements heating elements 4 of the heating body 2 thus each have a front edge 6 oriented towards the front front face of the heating body 2 and a rear edge 8 oriented towards the rear rear face of the heating body 2.
  • the heating body 2 comprises a support 10 for the heating elements 4, the support 10 comprising at least side walls 12 which longitudinally delimit the heating body and which extend facing each longitudinal end of the heating elements 4. More specifically, longitudinal ends of the heating elements 4 align along the vertical direction V and a side wall 12 extends vertically at a constant distance from the corresponding longitudinal end of each of the heating elements 4.
  • the electric radiator 1 comprises an electronic control unit 14 which is configured to issue a control instruction to at least one heating element 4 so that it heats up. More particularly, the electronic control unit 14 can generate an instruction to power supply resistive elements that this heating element comprises, in order to make it rise in temperature, this heating element 4 then transmitting calories to the flow of air supplied to pass through the heating body 2 so that the latter is heated.
  • each heating element 4 comprises at least one electrical connection member 24 which is electrically connected to electronic components present in the electronic control unit.
  • the electric radiator 1 comprises a casing 16 in which the electronic control unit 14 is housed and protected, the casing 16 limiting heat exchanges and electromagnetic disturbances with the external environment. to the electric radiator 1.
  • the casing 16 comprises several walls defining an internal volume in which the electronic control unit 14 is installed, the casing 16 advantageously taking a parallelepiped shape.
  • the casing 16 notably comprises side walls which peripherally delimit the housing of the electronic control unit 14, and a bottom wall 18 facing the heating body 2 which participates in delimiting the internal volume of the housing 16 and which separates this internal volume of the heating body 2 from the electric radiator i.
  • the bottom wall 18 can also be considered as a component of the support io of the heating body 2 when the support is secured to the casing by appropriate attachment means. In other words, the bottom wall 18 is interposed between the electronic control unit 14 and one of the heating elements 4 of the heating body.
  • the bottom wall 18 extends in a main plane of extension, here longitudinal and transverse, which is perpendicular to the side walls 12 of the support 10 of the heating body 2.
  • the heating elements 4 of the heating body 2 extend mainly along a longitudinal direction L, parallel to the main plane of extension of the bottom wall 18.
  • the heating elements 4 extend parallel to each other and parallel to the bottom wall 18 of the housing 16.
  • the heating elements 4 are arranged one above the other in a stacking direction perpendicular to the main plane of extension of the wall bottom 18, the stacking direction being parallel to the vertical direction V.
  • the arrangement of the heating elements 4 is thus such that the heating body 2 has a proximal heating element 4, that is to say a heating element arranged closer to the bottom wall 18 of the housing than are the other heating elements, and a distal heating element 4, that is to say a heating element disposed farther from the bottom wall 18 of the housing than are THE other heating elements.
  • the heating elements 4 are in indirect contact with the electronic components housed in the housing 16, that is to say that at least one additional electrical connection component is arranged between the heating elements 4 and their electrical connection device and the electronic components housed in the box 16 which participate in generating and transmitting the control instructions intended for the heating elements 4.
  • At least one heating element 4 of the heating body 2 comprises resistive elements 20 and two plates 22 arranged on either side of the resistive elements.
  • Each of the two plates 22 is extended longitudinally at one end by a connection member 24 as mentioned above and which allows the connection of the corresponding plate 22 to the electronic control unit 14 of the electric heater 1.
  • the resistive elements 20 can in particular consist of stones with PTC effect, interposed between two plates 22 each forming an electrode capable of conducting an electric current to the resistive elements 20 and causing them to rise in temperature, in order to transmit these calories to the flow of air passed through the heating body.
  • the heating element 4 has at each of its longitudinal ends, namely a first longitudinal end 26 and a second longitudinal end 28, at least one connecting member 24 of a plate 22.
  • the heating element 4 comprises a first plate 22a having a first connection member 24a disposed at the level of the first longitudinal end 26 of the heating element 4 and a second plate 22b having a second connection member 24b at the level of the second end longitudinal 28 of the heating element 4
  • connection members 24 of the plates 22 of different heating elements 4 are aligned one after the other along the stacking direction of the elements heating elements 4. More particularly, considering that the first longitudinal ends 26 of the heating elements are all located on the same side, opposite the second longitudinal ends 28, at least a part of the connection members 24 arranged at the level of the first longitudinal end 26 is aligned along a direction parallel to the vertical direction V. Preferably, connection members 24 arranged at the level of the first longitudinal ends 26 of the heating elements 4 are aligned with each other along a direction parallel to the vertical direction V and connection members 24 arranged at the level of the second longitudinal ends 28 of the elements ch 4 are aligned relative to each other along a direction parallel to the vertical direction V.
  • connection members 24 of the plates 22 of the same heating element 4 are aligned along a direction parallel to the main direction of extension of the heating element 4, namely the longitudinal direction. Furthermore, and as can be seen in particular in FIGS. 3 or 4, a connection member 24 is off-centered transversely, being closer to one of the transverse end edges than to the other of the transverse end edges. .
  • the connection members are thus offset transversely with respect to a longitudinal and vertical median plane of the heating body, being closer to the front edge 6, respectively to the rear edge 8, than on the other side.
  • the first connection member 24a of the first plate 22a and the second connection member 24b of the second plate 22b are on the one hand arranged closer to the front edge 6 than the rear edge 8, or closer to the rear edge 8 than the front edge 6, and on the other hand are aligned with each other in a direction parallel to the longitudinal direction L.
  • the heating elements 4 can be divided into a first set of heating elements 4a and a second set of heating elements 4b depending on the position of the connection members relative to the front edge or to the rear edge, for a given longitudinal end. More particularly, for a given longitudinal end, the connecting members 24 of the plates 22 of the first set of heating elements 4a are arranged closer to the front edge 6 and the connecting members 24 of the plates 22 of the second set of heating elements 4b are arranged closer to the rear edge 8 of the heating elements 4.
  • the first set of heating elements 4a and the second set of heating elements 4b can be connected to the electronic control unit 14 by different connection means, easy way.
  • the electronic control unit 14 is thus capable of transmitting a first control instruction to the first set of heating elements 4a and a second control instruction to the second set of heating elements 4b, the control instructions thus being able to be similar or different one from the other.
  • the first set of heating elements 4a can be heated in a similar or distinct manner from the second set of heating elements 4b, thus generating two distinct heating zones from each other in the vertical direction, perpendicular to the back wall.
  • the first set of heating elements 4a is arranged between the bottom wall 18 of the housing 16 and the second set of heating elements 4b.
  • an electric heater 1 the second set of heating elements 4b of which is arranged between the bottom wall 18 of the casing 16 and the first set of heating elements 4a would not thereby depart from the scope of the invention.
  • the heating body 2 comprises a first electrical connection assembly 30 and a second electrical connection assembly 32 each disposed at one of the longitudinal ends of the heating elements 4, each of the sets electrical connection 30, 32 comprising at least one connection pin 34, 36 electrically connecting connection members 24 of the plates 22 of the heating elements 4 to the electronic control unit 14.
  • each of the electrical connection assemblies 30, 32 extend parallel to each other, each of the electrical connection assemblies 30, 32 extending from the electronic control unit 14 perpendicular to the bottom wall 18 of the box 16, and therefore perpendicular to the heating elements 4.
  • An electrical circuit can thus be formed for each heating element, between the electronic control unit, a first electrical connection assembly 30 and a first connection member 24a at the level of a first longitudinal end, the corresponding first plate 22a, the resistive elements, the second plate 22b and the second connection member 24b associated at the level of the second longitudinal end then the second electrical connection assembly.
  • Each electrical connection assembly 30, 32 comprises in the illustrated example a first pin 34 and a second pin 36, each of the pins 34, 36 of an electrical connection assembly arranged at a given longitudinal end of the heating elements 2 being connected to the connection members 24 of one or the other of the sets of heating elements 4.
  • the pins 34, 36 extend parallel to each other along the vertical direction V from the electronic control unit 14 towards the heating body 2 so that they are in contact with connection members 24 of the heating elements 4.
  • the pins 34, 36 provide an electrical connection between several connection members 24 of several plates 22 of heating elements and the unit control electronics 14, which is possible in particular due to the vertical alignment of at least a part of the connection members arranged at the same longitudinal end of the heating body.
  • the first pins 34 have a lower height than the second pins 36, the heights being measured along a direction parallel to the vertical direction V between the electronic control unit 14 and a free end of the pins 34, 36.
  • the first electrical connection assembly 30 comprises a first short pin 34 and a second long pin 36, the first pin 34 electrically connecting the connection members 24 arranged at the first longitudinal ends 26 of the first set of heating elements 4a to the electronic control unit 14, while the second pin 36 electrically connects the connection members 24 arranged at the first longitudinal ends 26 of the second set of heating elements 4b to the electronic control unit 14.
  • the second electrical connection assembly 32 also comprises a first short pin 34 and a second long pin 36, the first pin 34 electrically connecting the connection members 24 arranged at the second longitudinal ends 28 of the first set of heating elements 4a to the electronic unit 14, while the second pin 36 electrically connects the connection members 24 arranged at the second longitudinal ends 28 of the second set of heating elements 4b to the electronic control unit 14.
  • the first short pin 34 of each of the electrical connections 30, 32 thus extends at the level of the connection members 24 of the first set of heating elements 4a, that is to say rather at the level of the rear edge 8 of the heating elements 4.
  • the first pins 34 have a height such that it is connected to the connection members 24 of the first set of heating elements 4a over its entire height, from the bottom wall 18 to its free end.
  • the second long pin 36 of each of the electrical connections 30, 32 extends for its part at the level of the connection members 24 of the second set of heating elements 4b, that is to say rather at the level of the front edge 6 of the heating elements 4.
  • the second pins 36 each have a first portion 37 and a second portion 39 extending between the first portion 37 and the free end of the second pin 36.
  • the first portion 37 of the second pin 36 has a height substantially similar to that of the first pin 34.
  • the second portion 39 is the portion of the second pin 36 which is connected to the connection members 24 of the second set of heating elements 4b over substantially its entire height up to its free end.
  • some heating elements 4 of the first set of heating elements 4a have a holding stud 41 of the first portion 37 of the second pin 36.
  • the holding studs 41 thus extend from the longitudinal ends tubes along the longitudinal direction L so that the first portion 37 of the second long pins 36 rest on these holding studs 41.
  • the electronic control unit 14 is capable of transmitting a first control instruction to the first set of heating elements 4a, via the first pins 34 of each connection set 30, 32, and a second instruction control to the second set of heating elements 4b, via the second pins 36 of each connection set.
  • these control instructions are independent and can vary from each other, so that two separate heating zones from each other are generated along the vertical direction, perpendicular to the wall. background.
  • the support 10 comprises at least one bar 40 extending parallel to the main direction of extension of the heating elements 4, that is to say parallel to the longitudinal direction L, between the side walls 12 of the support 10 and participating in vertically delimiting at least the two heating zones through which an air flow can circulate.
  • the bar 40 which here makes it possible to visually delimit the two heating zones of the heating body 2, can in particular be useful when the electric heater is in place in the ventilation, heating and/or air conditioning installation.
  • This installation may in particular comprise two separate ducts with a common wall delimiting them, each duct leading to one of the heating zones when the electric heater is in place.
  • the bar can thus be arranged opposite the common wall, in order to participate in particular in the compartmentalization of the flow of air brought to pass in such or such zone of the heating body.
  • the invention as it has just been described makes it possible to meet the aim it has set itself, namely to allow selective operation of different zones of the heating body and more particularly of neighboring zones overlapping vertically. , in a stacking direction perpendicular to the bottom wall interposed between the electronic control unit 14 and the heating body 2, this being made possible in particular by the arrangement of the heating elements 4 in parallel with this bottom wall and by the arrangement of the electrical connection assemblies 30, 32 within the heating body 2.
  • the present invention cannot however be limited to the means and configurations described and illustrated here and it also extends to any equivalent means and configuration as well as to any technically effective combination of such means.
  • the electric heater according to the invention could have more than two heating zones, with a greater number of pins for each connection assembly, and an equivalent number of sets of connection members from when each set is offset transversely relative to the other sets to allow the specific connection of this set by one of the pins.

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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)
  • Central Heating Systems (AREA)

Abstract

The present invention relates primarily to an electric radiator (1) of a ventilation, heating and/or air-conditioning system, wherein the electric radiator (1) comprises at least one heating body (2) equipped with heating elements (4) arranged next to one another so as to delimit between them a space for the circulation of a flow of air to be heated, the electric radiator (1) comprising at least one electronic control unit (14) configured to power and control the operation of the heating elements (4) and a housing (16) in which the electronic control unit (14) is received, wherein the heating body (2) is attached to the housing (16) and the housing (16) has a bottom wall (18) facing the heating body (2) and extending in a main plane, the invention being characterized in that the heating elements (4) of the heating body (2) extend mainly in a longitudinal direction (L), parallel to the main plane in which extends the bottom wall (18).

Description

RADIATEUR ÉLECTRIQUE D’UNE INSTALLATION DE VENTILATION, DE CHAUFFAGE ET/OU D’AIR CLIMATISÉ ELECTRIC RADIATOR OF A VENTILATION, HEATING AND/OR AIR CONDITIONING INSTALLATION
La présente invention s’inscrit dans le domaine des installations de ventilation, de chauffage, et/ ou de climatisation de véhicule automobile, et elle concerne plus particulièrement un radiateur électrique de telles installations de ventilation, de chauffage et/ou de climatisation. The present invention falls within the field of motor vehicle ventilation, heating and/or air conditioning systems, and it relates more particularly to an electric radiator of such ventilation, heating and/or air conditioning systems.
Les véhicules automobiles sont généralement équipés d’un système de ventilation, de chauffage et/ou de climatisation permettant de mettre en circulation un flux d’air vers l’habitacle du véhicule automobile, et, selon la température de l’habitacle souhaitée par le conducteur et/ou les passagers du véhicule automobile, chauffer et/ou refroidir le flux d’air envoyé dans l’habitacle. De telles installations de ventilation, de chauffage et/ ou de climatisation comprennent ainsi au moins un organe de mise en circulation du flux d’air et un radiateur électrique apte à chauffer le flux d’air mis en circulation vers l’habitacle. Motor vehicles are generally equipped with a ventilation, heating and/or air conditioning system making it possible to circulate a flow of air towards the passenger compartment of the motor vehicle, and, depending on the temperature of the passenger compartment desired by the driver and/or the passengers of the motor vehicle, heating and/or cooling the flow of air sent into the passenger compartment. Such ventilation, heating and/or air conditioning installations thus comprise at least one member for circulating the air flow and an electric heater capable of heating the air flow circulated towards the passenger compartment.
Il est connu que les radiateurs électriques de ces installations de ventilation, de chauffage et/ou de climatisation comprennent un corps de chauffe dans lequel des éléments chauffants, par exemple sous forme de tubes, sont disposés les uns à côté des autres en travers d’un flux d’air à chauffer. De tels radiateurs électriques comprennent généralement au moins un dispositif de contrôle électronique des éléments chauffants comportant une carte de circuits imprimés sur laquelle sont installés différents composants électroniques. Les composants électroniques participent à générer une instruction de commande à transmettre aux éléments chauffants pour qu’ils chauffent. Dès lors, les éléments chauffants sont aptes à monter en température et le flux d’air circulant entre les éléments chauffants du radiateur électrique est chauffé en circulant entre les éléments chauffants. It is known that the electric radiators of these ventilation, heating and/or air conditioning installations comprise a heating body in which heating elements, for example in the form of tubes, are arranged next to each other across a flow of air to be heated. Such electric heaters generally comprise at least one electronic control device for the heating elements comprising a printed circuit board on which various electronic components are installed. The electronic components participate in generating a control instruction to be transmitted to the heating elements so that they heat up. Therefore, the heating elements are able to rise in temperature and the flow of air circulating between the heating elements of the electric heater is heated by circulating between the heating elements.
Les éléments chauffants sont raccordés à la carte de circuits imprimés, le cas échéant par des transistors fixés sur la carte de circuits imprimés, pour que les instructions de commande puissent être transmises aux éléments chauffants. En étant fixés de la sorte à la carte de circuits imprimés, les éléments chauffants s’étendent principalement selon une direction perpendiculaire à un plan d’extension de la carte de circuits imprimés. Dans cette disposition, chaque élément chauffant est raccordé à la carte de circuits imprimés à l’une de ses extrémités longitudinales, celle la plus proche de la carte de circuits imprimés, et l’ensemble des éléments résistifs au sein des éléments chauffants est alimenté par un même courant électrique passant par ce raccordement, de sorte qu’une quantité sensiblement uniforme de chaleur est dégagée sur toute la dimension d’extension principale de l’élément chauffant. The heating elements are connected to the printed circuit board, if necessary by transistors fixed on the printed circuit board, so that the control instructions can be transmitted to the heating elements. By being fixed in this way to the printed circuit board, the heating elements extend mainly in a direction perpendicular to an extension plane of the printed circuit board. In this arrangement, each heating element is connected to the printed circuit board at one of its longitudinal ends, that closest to the printed circuit board, and all of the resistive elements within the heating elements are powered by the same electric current passing through this connection, so that a substantially uniform quantity of heat is given off over the entire principal extension dimension of the heating element.
Il peut être recherché de configurer le corps de chauffe de manière à pouvoir le scinder en plusieurs zones de chauffe particulières. En d’autres termes, il peut être recherché d’alimenter en courant électrique des éléments résistifs présents dans une première zone du corps de chauffe, pour chauffer une partie du flux d’air amené à traverser ce corps de chauffe, et simultanément de laisser inactif d’autres éléments résistifs pour ne pas dépenser d’énergie électrique alors que la partie du flux d’air amené à rencontrer ces autres éléments résistifs n’a pas à être chauffée. It may be desired to configure the heating body so as to be able to split it into several particular heating zones. In other words, it may be desired to supply electric current to resistive elements present in a first zone of the heating body, to heat part of the air flow brought through this heating body, and simultaneously to let inactive of other resistive elements so as not to expend electrical energy while the part of the air flow brought into contact with these other resistive elements does not have to be heated.
L’agencement des éléments chauffants précédemment évoqué implique une répartition de la chaleur uniforme au sein d’un même élément chauffant de sorte que la séparation du corps de chauffe en plusieurs zones de chauffe activables sélectivement ne peut être réalisée que par un allumage sélectif des éléments chauffants, et donc uniquement selon une direction de juxtaposition des éléments chauffants, parallèle au plan d’extension de la carte de circuits imprimés. The arrangement of the heating elements mentioned above implies a uniform distribution of heat within the same heating element so that the separation of the heating body into several selectively activatable heating zones can only be achieved by selective ignition of the elements. heaters, and therefore only in a direction of juxtaposition of the heating elements, parallel to the extension plane of the printed circuit board.
La présente invention propose une solution alternative aux solutions déjà existantes et a pour sujet principal une nouvelle disposition des éléments chauffants qui permette une répartition différente des zones de chauffe activables sélectivement. The present invention proposes an alternative solution to existing solutions and has as its main subject a new layout of the heating elements which allows a different distribution of the heating zones which can be activated selectively.
Dans ce contexte, l’invention a pour principal objet un radiateur électrique d’une installation de ventilation, de chauffage et/ou d’air climatisé, le radiateur électrique comprenant au moins un corps de chauffe équipé d’éléments chauffants agencés les uns à côtés des autres de sorte à délimiter entre eux un espace de circulation d’un flux d’air à chauffer, le radiateur électrique comprenant au moins une unité électronique de commande configurée pour alimenter et commander le fonctionnement des éléments chauffants et un boîtier dans lequel est logé l’unité électronique de commande, le corps de chauffe étant fixé sur le boîtier, le boîtier comprenant une paroi de fond en regard du corps de chauffe s’étendant dans un plan principal d’extension, caractérisé en ce que les éléments chauffants du corps de chauffe s’étendent principalement selon une direction longitudinale, parallèlement au plan principal d’extension de la paroi de fond. In this context, the main subject of the invention is an electric radiator of a ventilation, heating and/or air conditioning installation, the electric radiator comprising at least one heating element equipped with heating elements arranged one to sides of the others so as to delimit between them a circulation space for a flow of air to be heated, the electric radiator comprising at least one electronic control unit configured to supply power and control the operation of the heating elements and a box in which the electronic control unit is housed, the body heater being fixed to the casing, the casing comprising a bottom wall facing the heating body extending in a main plane of extension, characterized in that the heating elements of the heating body extend mainly in one direction longitudinal, parallel to the main plane of extension of the back wall.
Les éléments chauffants sont disposés les uns au-dessus des autres selon une direction d’empilement perpendiculaire au plan principal d’extension de la paroi de fond. On comprend que les éléments chauffants sont disposés en parallèle, chacun s’étendant à une distance de la paroi de fond qui est différente de la distance correspondante des autres éléments chauffants. The heating elements are arranged one above the other in a stacking direction perpendicular to the main plane of extension of the bottom wall. It is understood that the heating elements are arranged in parallel, each extending at a distance from the bottom wall which is different from the corresponding distance from the other heating elements.
Dans cette disposition, et tel que cela sera évoqué plus en détails ci-après, on peut définir un premier ensemble d’éléments chauffants et un deuxième ensemble d’éléments chauffants, le premier ensemble d’éléments chauffants étant disposé entre la paroi de fond du boîtier et le deuxième ensemble d’éléments chauffants. L’unité électronique de commande est apte à émettre une première instruction de commande au premier ensemble d’éléments chauffants et une deuxième instruction de commande au deuxième ensemble d’éléments chauffants, les instructions de commande pouvant ainsi être similaires ou différentes l’une de l’autre. On comprend ici que le premier ensemble d’éléments chauffants peut être chauffé de façon similaire ou distincte du deuxième ensemble d’éléments chauffants, générant ainsi deux zones de chauffe distinctes l’une de l’autre. In this arrangement, and as will be discussed in more detail below, it is possible to define a first set of heating elements and a second set of heating elements, the first set of heating elements being arranged between the bottom wall of the housing and the second set of heating elements. The electronic control unit is capable of transmitting a first control instruction to the first set of heating elements and a second control instruction to the second set of heating elements, the control instructions thus being able to be similar to or different from one the other. It is understood here that the first set of heating elements can be heated in a similar or separate way from the second set of heating elements, thus generating two separate heating zones from one another.
Selon une caractéristique optionnelle de l’invention, au moins un élément chauffant du corps de chauffe comprend des éléments résistifs et des plaques formant des électrodes, chacune des plaques étant prolongée longitudinalement à une extrémité par un organe de connexion, l’élément chauffant présentant à chacune de ses extrémités longitudinales un organe de connexion d’une plaque. Les plaques formant des électrodes sont disposées de part et d’autre des éléments résistifs, en enserrant ceux-ci. L’organe de connexion d’une plaque est configuré pour être reliée, par l’intermédiaire d’un moyen de raccordement, au moins électriquement à la carte de circuits imprimés de l’unité électronique de commande. Avantageusement, un moyen de raccordement est commun à plusieurs organes de connexion, et plus précisément à des organes de connexion respectivement associés à un des éléments chauffants du corps de chauffe. Dans ce contexte, les éléments chauffants sont configurés et disposés les uns par rapport aux autres de sorte que plusieurs organes de connexion forment un alignement le long de la direction d’empilement des éléments chauffants. According to an optional characteristic of the invention, at least one heating element of the heating body comprises resistive elements and plates forming electrodes, each of the plates being extended longitudinally at one end by a connection member, the heating element having at each of its longitudinal ends a connecting member of a plate. The plates forming the electrodes are arranged on either side of the resistive elements, enclosing them. The connection member of a plate is configured to be connected, via a connection means, at least electrically to the printed circuit board of the electronic control unit. Advantageously, a connection means is common to several connection members, and more precisely to connection members respectively associated with one of the heating elements of the heating body. In this context, the heating elements are configured and arranged with respect to each other so that several connection members form an alignment along the stacking direction of the heating elements.
Selon une autre caractéristique optionnelle de l’invention, le corps de chauffe présente une face avant et une face arrière de sorte que le flux d’air est apte à circuler à travers le corps de chauffe depuis la face avant vers la face arrière, au moins un élément chauffant du corps de chauffe présentant un bord avant orienté vers la face avant du corps de chauffe et un bord arrière orienté vers la face arrière du corps de chauffe, les organes de connexion des plaques d’un élément chauffant s’alignant le long d’une direction parallèle à la direction d’extension principale de l’élément chauffant en étant plus proche du bord avant ou du bord arrière. On facilite ainsi le raccordement électrique par des moyens de raccordement appropriés disposés à chaque extrémité longitudinale d’un élément chauffant, en disposant ces moyens de raccordement proche d’un bord avant ou arrière en fonction du bord duquel sont proches les organes de connexion d’un même élément chauffant. According to another optional characteristic of the invention, the heating body has a front face and a rear face so that the airflow is able to circulate through the heating body from the front face towards the rear face, at the at least one heating element of the heating body having a front edge oriented towards the front face of the heating body and a rear edge oriented towards the rear face of the heating body, the connecting members of the plates of a heating element aligning the along a direction parallel to the main extension direction of the heating element being closer to the leading edge or the trailing edge. The electrical connection is thus facilitated by appropriate connection means arranged at each longitudinal end of a heating element, by arranging these connection means close to a front or rear edge depending on the edge of which the connection members of the same heating element.
Selon une autre caractéristique optionnelle de l’invention, le corps de chauffe comprend un premier ensemble d’éléments chauffants et un deuxième ensemble d’éléments chauffants, les organes de connexion des plaques du premier ensemble d’éléments chauffants étant disposées plus proches du bord avant tandis que les organes de connexion des plaques du deuxième ensemble d’éléments chauffants sont disposées plus proches du bord arrière des éléments chauffants. According to another optional characteristic of the invention, the heating body comprises a first set of heating elements and a second set of heating elements, the connecting members of the plates of the first set of heating elements being arranged closer to the edge front while the connecting members of the plates of the second set of heating elements are arranged closer to the rear edge of the heating elements.
Selon une autre caractéristique optionnelle de l’invention, le corps de chauffe comprend un premier ensemble de raccordement électrique et un deuxième ensemble de raccordement électrique chacun disposé à l’une des extrémités longitudinales des éléments chauffants, chacun des ensembles de raccordement électrique comprenant au moins une broche de raccordement reliant électriquement des organes de connexion des plaques des éléments chauffants à l’unité électronique de commande. En d’autres termes, la broche assure une liaison électrique entre plusieurs organes de connexion de plusieurs plaques et la carte de circuits imprimés de l’unité électronique de commande. Dans cette configuration, les broches s’étendent parallèlement l’une de l’autre, chacune au niveau d’une des extrémités longitudinales des éléments chauffants. According to another optional characteristic of the invention, the heating body comprises a first electrical connection assembly and a second electrical connection assembly each disposed at one of the longitudinal ends of the heating elements, each of the electrical connection assemblies comprising at least one connection pin electrically connecting members for connecting the plates of the heating elements to the electronic control unit. In other words, the pin ensures an electrical connection between several connecting members of several plates and the printed circuit board of the electronic control unit. In this configuration, the pins extend parallel to each other, each at one of the longitudinal ends of the heating elements.
Selon une autre caractéristique optionnelle de l’invention, chacun des ensembles de raccordement électrique s’étend depuis l’unité électronique de commande perpendiculairement à la paroi de fond du boîtier. According to another optional feature of the invention, each of the electrical connection assemblies extends from the electronic control unit perpendicular to the bottom wall of the box.
Selon une autre caractéristique optionnelle de l’invention, chacun des ensembles de raccordement électrique s’étend parallèlement à l’autre raccordement électrique. According to another optional feature of the invention, each of the electrical connection assemblies extends parallel to the other electrical connection.
Selon une autre caractéristique optionnelle de l’invention, chacun des ensembles de raccordement électrique comprend une première broche de raccordement reliée aux organes de connexion des plaques du premier ensemble d’éléments chauffants, et une deuxième broche de raccordement distincte de la première broche de raccordement et reliée aux organes de connexion des plaques du deuxième ensemble d’éléments chauffants. According to another optional characteristic of the invention, each of the electrical connection assemblies comprises a first connection pin connected to the connection members of the plates of the first set of heating elements, and a second connection pin separate from the first connection pin and connected to the connecting members of the plates of the second set of heating elements.
Selon une autre caractéristique optionnelle de l’invention, au moins un élément chauffant comprend plusieurs éléments résistifs, sous forme de pierres à effet CTP, interposés entre deux plaques formant chacune une électrode. According to another optional characteristic of the invention, at least one heating element comprises several resistive elements, in the form of PTC effect stones, interposed between two plates each forming an electrode.
Selon une autre caractéristique optionnelle de l’invention, le corps de chauffe comprend un cadre de support des éléments chauffants, le cadre présentant des parois latérales s’étendant perpendiculairement à la paroi de fond et entre lesquelles s’étendent les éléments chauffants, le cadre comprenant au moins un barreau s’étendant parallèlement à la direction d’extension principale des éléments chauffants entre les parois latérales du cadre et participant à délimiter au moins deux zones de chauffe à travers lesquels peut circuler un flux d’air. La présente invention a également pour objet une installation de ventilation, de chauffage et/ou d’air climatisé, comprenant au moins un dispositif de ventilation apte à forcer la circulation d’un flux d’air à travers l’installation de ventilation, de chauffage et/ou d’air climatisé et un radiateur électrique conforme à l’une quelconque des caractéristiques précédentes et à travers lequel est chauffé le flux d’air. According to another optional characteristic of the invention, the heating body comprises a support frame for the heating elements, the frame having side walls extending perpendicularly to the bottom wall and between which the heating elements extend, the frame comprising at least one bar extending parallel to the main direction of extension of the heating elements between the side walls of the frame and participating in delimiting at least two heating zones through which an air flow can circulate. The present invention also relates to a ventilation, heating and/or air conditioning installation, comprising at least one ventilation device capable of forcing the circulation of a flow of air through the ventilation installation, heating and/or air conditioning and an electric heater conforming to any of the preceding characteristics and through which the air flow is heated.
Selon une autre caractéristique optionnelle de l’invention, l’installation de ventilation, de chauffage et/ou d’air climatisé comprend deux conduits de chauffe, l’un des conduits guidant au moins une partie du flux d’air vers l’une des zones de chauffe du radiateur électrique, l’autre conduit guidant au moins une partie du flux d’air vers l’autre zone de chauffe du radiateur électrique.According to another optional characteristic of the invention, the ventilation, heating and/or air conditioning installation comprises two heating ducts, one of the ducts guiding at least part of the air flow towards one heating zones of the electric radiator, the other duct guiding at least part of the air flow towards the other heating zone of the electric radiator.
D’autres caractéristiques, détails et avantages de l’invention ressortiront plus clairement à la lecture de la description qui suit d’une part, et de plusieurs exemples de réalisation donnés à titre indicatif et non limitatif en référence aux dessins schématiques annexés d’autre part, sur lesquels : Other characteristics, details and advantages of the invention will emerge more clearly on reading the description which follows on the one hand, and several examples of embodiment given by way of indication and not limitation with reference to the appended schematic drawings on the other. part, on which:
[Fig. i] est une représentation en perspective d’un radiateur électrique selon l’invention ; [Fig. i] is a representation in perspective of an electric heater according to the invention;
[Fig. 2] est une coupe longitudinale du radiateur représenté sur la figure i ;[Fig. 2] is a longitudinal section of the radiator shown in Figure i;
[Fig. 3] est une représentation en perspective d’un corps de chauffe du radiateur représenté sur la figure 1 ; [Fig. 3] is a perspective representation of a heating body of the radiator shown in Figure 1;
[Fig. 4] est une vue de détails en perspective de plusieurs éléments chauffants du corps de chauffe représenté sur la figure 3 ; [Fig. 4] is a perspective detail view of several heating elements of the heating body shown in Figure 3;
[Fig. 5] est une coupe longitudinale d’un élément chauffant représenté sur la figure 4 ; [Fig. 5] is a longitudinal section of a heating element shown in Figure 4;
[Fig. 6] est une vue de dessus d’un élément chauffant représenté sur la figure 4.[Fig. 6] is a top view of a heating element shown in Figure 4.
Les caractéristiques, variantes et les différentes formes de réalisation de l’invention peuvent être associées les unes avec les autres, selon diverses combinaisons, dans la mesure où elles ne sont pas incompatibles ou exclusives les unes par rapport aux autres. On pourra notamment imaginer des variantes de l’invention ne comprenant qu’une sélection de caractéristiques décrites par la suite de manière isolée des autres caractéristiques décrites, si cette sélection de caractéristiques est suffisante pour conférer un avantage technique et/ ou pour différencier l’invention par rapport à l’état de la technique antérieur. The features, variants and different embodiments of the invention may be associated with each other, in various combinations, insofar as they are not incompatible or exclusive with respect to each other. In particular, it is possible to imagine variants of the invention comprising only a selection of characteristics described below in isolation from the other characteristics described, if this selection of characteristics is sufficient to confer a technical advantage and/or to differentiate the invention from the prior state of the art.
Sur les figures, les éléments communs à plusieurs figures conservent la même référence. In the figures, the elements common to several figures retain the same reference.
Dans la description détaillée qui va suivre, les dénominations « longitudinale », « transversale » et « verticale » se réfèrent à l’orientation d’un radiateur électrique selon l’invention. Une direction longitudinale correspond à une direction principale d’allongement d’un élément chauffant, cette direction longitudinale étant parallèle à un axe longitudinal L d’un L, V, T illustré sur les figures. Une direction verticale correspond à une direction le long de laquelle une paroi latérale d’un support de l’élément chauffant du radiateur s’étend principalement, cette direction verticale étant parallèle à un axe vertical V du repère L, V, T et cet axe vertical V étant perpendiculaire à l’axe longitudinal L. Enfin, une direction transversale correspond à une direction parallèle à un axe transversal T du repère L, V, T, cet axe transversal T étant perpendiculaire à l’axe longitudinal L et l’axe vertical V. In the detailed description which follows, the denominations "longitudinal", "transverse" and "vertical" refer to the orientation of an electric radiator according to the invention. A longitudinal direction corresponds to a main direction of elongation of a heating element, this longitudinal direction being parallel to a longitudinal axis L of an L, V, T illustrated in the figures. A vertical direction corresponds to a direction along which a side wall of a support of the heating element of the radiator mainly extends, this vertical direction being parallel to a vertical axis V of the mark L, V, T and this axis vertical V being perpendicular to the longitudinal axis L. Finally, a transverse direction corresponds to a direction parallel to a transverse axis T of the reference L, V, T, this transverse axis T being perpendicular to the longitudinal axis L and the axis vertical V.
Sur la figure 1 est illustré un radiateur électrique 1 selon l’invention configuré pour être installé au niveau d’une installation de ventilation, de chauffage et/ ou d’air climatisé d’un véhicule. Le radiateur électrique i est utilisé dans ce type d’installation par exemple pour chauffer un flux d’air circulant dans l’installation, de chauffage et/ ou d’air climatisé à travers ledit radiateur électrique i. In Figure 1 is illustrated an electric heater 1 according to the invention configured to be installed at a ventilation, heating and / or air conditioning installation of a vehicle. The electric radiator i is used in this type of installation, for example to heat a flow of air circulating in the installation, heating and/or air conditioning through said electric radiator i.
Pour cela et tel que visible sur les figures i à 3, le radiateur électrique 1 comprend au moins un corps de chauffe 2 équipé d’éléments chauffants 4 agencés les uns à côtés des autres de sorte à délimiter entre eux un espace de circulation d’un flux d’air à chauffer. Plus particulièrement, chaque élément chauffant 4 est disposé à distance d’au moins un élément chauffant 4 voisin, un flux d’air pouvant circuler entre ces deux éléments chauffants 4 pour être chauffé. For this and as visible in Figures i to 3, the electric heater 1 comprises at least one heating body 2 equipped with heating elements 4 arranged alongside each other so as to delimit between them a circulation space of a flow of air to be heated. More particularly, each heating element 4 is arranged at a distance from at least one neighboring heating element 4, an air flow being able to circulate between these two heating elements 4 in order to be heated.
Le corps de chauffe 2 présente une face avant AV et une face arrière AR de sorte que le flux d’air à chauffer circule principalement transversalement depuis la face avant AV vers la face arrière AR du corps de chauffe 2. Les éléments chauffants 4 du corps de chauffe 2 présentent ainsi chacun un bord avant 6 orienté vers la face avant AV du corps de chauffe 2 et un bord arrière 8 orienté vers la face arrière AR du corps de chauffe 2. The heating body 2 has a front face AV and a rear face AR so that the flow of air to be heated circulates mainly transversely from the front face AV towards the rear face AR of the heating body 2. The elements heating elements 4 of the heating body 2 thus each have a front edge 6 oriented towards the front front face of the heating body 2 and a rear edge 8 oriented towards the rear rear face of the heating body 2.
Le corps de chauffe 2 comprend un support 10 des éléments chauffants 4, le support 10 comprenant au moins des parois latérales 12 qui délimite longitudinalement le corps de chauffe et qui s’étendent en regard de chaque extrémité longitudinale des éléments chauffants 4. Plus précisément, des extrémités longitudinales des éléments chauffants 4 s’alignent le long de la direction verticale V et une paroi latérale 12 s’étend verticalement à une distance constante de l’extrémité longitudinale correspondante de chacun des éléments chauffants 4. The heating body 2 comprises a support 10 for the heating elements 4, the support 10 comprising at least side walls 12 which longitudinally delimit the heating body and which extend facing each longitudinal end of the heating elements 4. More specifically, longitudinal ends of the heating elements 4 align along the vertical direction V and a side wall 12 extends vertically at a constant distance from the corresponding longitudinal end of each of the heating elements 4.
Le radiateur électrique 1 comprend une unité électronique de commande 14 qui est configurée pour émettre une instruction de commande à au moins un élément chauffant 4 pour qu’il chauffe. Plus particulièrement, l’unité électronique de commande 14 peut générer une instruction d’alimentation électrique d’éléments résistifs que comporte cet élément chauffant, afin de le faire monter en température, cet élément chauffant 4 transmettant ensuite des calories au flux d’air amené à traverser le corps de chauffe 2 pour que ce dernier soit chauffé. A cet effet, et tel que cela sera décrit plus en détails ci-après, chaque élément de chauffant 4 comporte au moins un organe de connexon électrique 24 qui est raccordé électriquement à des composants électroniques présents dans l’unité électronique de commande. The electric radiator 1 comprises an electronic control unit 14 which is configured to issue a control instruction to at least one heating element 4 so that it heats up. More particularly, the electronic control unit 14 can generate an instruction to power supply resistive elements that this heating element comprises, in order to make it rise in temperature, this heating element 4 then transmitting calories to the flow of air supplied to pass through the heating body 2 so that the latter is heated. For this purpose, and as will be described in more detail below, each heating element 4 comprises at least one electrical connection member 24 which is electrically connected to electronic components present in the electronic control unit.
Tel que cela est visible sur les figures 1 et 2, le radiateur électrique 1 comprend un boîtier 16 dans lequel est logée et protégée l’unité électronique de commande 14, le boîtier 16 limitant les échanges thermiques et les perturbations électromagnétiques avec l’environnement extérieur au radiateur électrique 1. Le boîtier 16 comprend plusieurs parois définissant un volume interne dans lequel est installée l’unité électronique de commande 14, le boîtier 16 prenant avantageusement une forme parallélépipédique. As can be seen in FIGS. 1 and 2, the electric radiator 1 comprises a casing 16 in which the electronic control unit 14 is housed and protected, the casing 16 limiting heat exchanges and electromagnetic disturbances with the external environment. to the electric radiator 1. The casing 16 comprises several walls defining an internal volume in which the electronic control unit 14 is installed, the casing 16 advantageously taking a parallelepiped shape.
Le boîtier 16 comprend notamment des parois latérales qui délimitent périphériquement le logement de l’unité électronique de commande 14, et une paroi de fond 18 en regard du corps de chauffe 2 qui participe à délimiter le volume interne du boîtier 16 et qui sépare ce volume interne du corps de chauffe 2 du radiateur électrique i. La paroi de fond 18 peut également être considérée comme un composant du support io du corps de chauffe 2 lorsque le support est rendu solidaire du boîtier par des moyens d’accroche appropriés. En d’autres termes, la paroi de fond 18 est interposée entre l’unité électronique de commande 14 et un des éléments chauffants 4 du corps de chauffe. The casing 16 notably comprises side walls which peripherally delimit the housing of the electronic control unit 14, and a bottom wall 18 facing the heating body 2 which participates in delimiting the internal volume of the housing 16 and which separates this internal volume of the heating body 2 from the electric radiator i. The bottom wall 18 can also be considered as a component of the support io of the heating body 2 when the support is secured to the casing by appropriate attachment means. In other words, the bottom wall 18 is interposed between the electronic control unit 14 and one of the heating elements 4 of the heating body.
La paroi de fond 18 s’étend dans un plan principal d’extension, ici longitudinal et transversal, qui est perpendiculaire aux parois latérales 12 du support 10 du corps de chauffe 2. The bottom wall 18 extends in a main plane of extension, here longitudinal and transverse, which is perpendicular to the side walls 12 of the support 10 of the heating body 2.
Selon une caractéristique de l’invention, les éléments chauffants 4 du corps de chauffe 2 s’étendent principalement selon une direction longitudinale L, parallèlement au plan principal d’extension de la paroi de fond 18. En d’autres termes, les éléments chauffants 4 s’étendent parallèlement les uns aux autres et parallèlement à la paroi de fond 18 du boîtier 16. Les éléments chauffants 4 sont disposés les uns au-dessus des autres selon une direction d’empilement perpendiculaire au plan principal d’extension de la paroi de fond 18, la direction d’empilement étant parallèle à la direction verticale V. La disposition des éléments chauffants 4 est ainsi tel que le corps de chauffe 2 présente un élément chauffant 4 proximal, c’est-à-dire un élément chauffant disposé plus près de la paroi de fond 18 du boîtier que ne le sont les autres éléments chauffants, et un élément chauffant 4 distal c’est-à-dire un élément chauffant disposé plus loin de la paroi de fond 18 du boîtier que ne le sont les autres éléments chauffants.According to one characteristic of the invention, the heating elements 4 of the heating body 2 extend mainly along a longitudinal direction L, parallel to the main plane of extension of the bottom wall 18. In other words, the heating elements 4 extend parallel to each other and parallel to the bottom wall 18 of the housing 16. The heating elements 4 are arranged one above the other in a stacking direction perpendicular to the main plane of extension of the wall bottom 18, the stacking direction being parallel to the vertical direction V. The arrangement of the heating elements 4 is thus such that the heating body 2 has a proximal heating element 4, that is to say a heating element arranged closer to the bottom wall 18 of the housing than are the other heating elements, and a distal heating element 4, that is to say a heating element disposed farther from the bottom wall 18 of the housing than are THE other heating elements.
Dans cette configuration, avec les éléments chauffants parallèles les uns aux autres, les éléments chauffants 4 sont en contact indirectement avec les composants électroniques logés dans le boîtier 16, c’est-à-dire qu’au moins un composant de connexion électrique additionnel est disposé entre les éléments chauffants 4 et leur organe de connexion électrique et les composants électroniques logés dans le boîtier 16 qui participent à générer et transmettre les instructions de commande à destination des éléments chauffants 4. In this configuration, with the heating elements parallel to each other, the heating elements 4 are in indirect contact with the electronic components housed in the housing 16, that is to say that at least one additional electrical connection component is arranged between the heating elements 4 and their electrical connection device and the electronic components housed in the box 16 which participate in generating and transmitting the control instructions intended for the heating elements 4.
Tel qu’illustré sur la figure 5, au moins un élément chauffant 4 du corps de chauffe 2 comprend des éléments résistifs 20 et deux plaques 22 disposées de part et d’autre des éléments résistifs. Chacune des deux plaques 22 est prolongée longitudinalement à une extrémité par un organe de connexion 24 tel qu’évoqué précédemment et qui permet le raccordement de la plaque correspondante 22 à l’unité électronique de commande 14 du radiateur électrique 1. Les éléments résistifs 20 peuvent notamment consister en des pierres à effet CTP, interposés entre deux plaques 22 formant chacune une électrode apte à conduire un courant électrique aux éléments résistifs 20 et les faire monter en température, afin de transmettre ces calories au flux d’air amené à traverser le corps de chauffe. As illustrated in FIG. 5, at least one heating element 4 of the heating body 2 comprises resistive elements 20 and two plates 22 arranged on either side of the resistive elements. Each of the two plates 22 is extended longitudinally at one end by a connection member 24 as mentioned above and which allows the connection of the corresponding plate 22 to the electronic control unit 14 of the electric heater 1. The resistive elements 20 can in particular consist of stones with PTC effect, interposed between two plates 22 each forming an electrode capable of conducting an electric current to the resistive elements 20 and causing them to rise in temperature, in order to transmit these calories to the flow of air passed through the heating body.
Les deux plaques d’un même élément chauffant sont disposées de part et d’autre des éléments résistifs de telle sorte que l’organe de connexion prolongeant une de ces deux plaques est disposé à l’opposé, selon la direction longitudinale, de l’organe de connexion de l’autre des deux plaques. De la sorte, l’élément chauffant 4 présente à chacune de ses extrémités longitudinales, à savoir une première extrémité longitudinale 26 et une deuxième extrémité longitudinale 28, au moins un organe de connexion 24 d’une plaque 22. En d’autres termes, l’élément chauffant 4 comprend une première plaque 22a présentant un premier organe de connexion 24a disposé au niveau de la première extrémité longitudinale 26 de l’élément chauffant 4 et une deuxième plaque 22b présentant un deuxième organe de connexion 24b au niveau de la deuxième extrémité longitudinale 28 de l’élément chauffant 4 The two plates of the same heating element are arranged on either side of the resistive elements so that the connection member extending one of these two plates is arranged opposite, in the longitudinal direction, of the connecting member of the other of the two plates. In this way, the heating element 4 has at each of its longitudinal ends, namely a first longitudinal end 26 and a second longitudinal end 28, at least one connecting member 24 of a plate 22. In other words, the heating element 4 comprises a first plate 22a having a first connection member 24a disposed at the level of the first longitudinal end 26 of the heating element 4 and a second plate 22b having a second connection member 24b at the level of the second end longitudinal 28 of the heating element 4
Au sein du corps de chauffe 2 formé par l’empilement des éléments chauffants 4, des organes de connexion 24 des plaques 22 de différents éléments chauffants 4 s’alignent les unes à la suite des autres le long de la direction d’empilement des éléments chauffants 4. Plus particulièrement, en considérant que les premières extrémités longitudinales 26 des éléments chauffants sont toutes situées d’un même côté, à l’opposé des deuxièmes extrémités longitudinales 28, au moins une partie des organes de connexion 24 disposées au niveau de la première extrémité longitudinale 26 est alignée le long d’une direction parallèle à la direction verticale V. Préférentiellement, des organes de connexion 24 disposées au niveau des premières extrémités longitudinales 26 des éléments chauffants 4 sont alignés les uns par rapport aux autres le long d’une direction parallèle à la direction verticale V et des organes de connexion 24 disposées au niveau des deuxièmes extrémités longitudinales 28 des éléments chauffants 4 sont alignés les uns par rapport aux autres le long d’une direction parallèle à la direction verticale V. Within the heating body 2 formed by the stacking of the heating elements 4, connection members 24 of the plates 22 of different heating elements 4 are aligned one after the other along the stacking direction of the elements heating elements 4. More particularly, considering that the first longitudinal ends 26 of the heating elements are all located on the same side, opposite the second longitudinal ends 28, at least a part of the connection members 24 arranged at the level of the first longitudinal end 26 is aligned along a direction parallel to the vertical direction V. Preferably, connection members 24 arranged at the level of the first longitudinal ends 26 of the heating elements 4 are aligned with each other along a direction parallel to the vertical direction V and connection members 24 arranged at the level of the second longitudinal ends 28 of the elements ch 4 are aligned relative to each other along a direction parallel to the vertical direction V.
Selon une caractéristique de l’invention, et comme plus particulièrement visibles sur la figure 4, les organes de connexion 24 des plaques 22 d’un même élément chauffant 4 sont alignées le long d’une direction parallèle à la direction d’extension principale de l’élément chauffant 4, à savoir la direction longitudinale. Par ailleurs, et tel que cela est notamment visible sur les figures 3 ou 4, un organe de connexion 24 est décentré transversalement, en étant plus proche d’un des bords d’extrémité transversale que de l’autre des bords d’extrémité transversale. Lorsque les éléments chauffants sont en place dans le radiateur électrique, les organes de connexion sont ainsi décalés transversalement par rapport à un plan médian longitudinal et vertical du corps de chauffe, en étant plus proches du bord avant 6, respectivement du bord arrière 8, que de l’autre bord. According to a characteristic of the invention, and as more particularly visible in FIG. 4, the connection members 24 of the plates 22 of the same heating element 4 are aligned along a direction parallel to the main direction of extension of the heating element 4, namely the longitudinal direction. Furthermore, and as can be seen in particular in FIGS. 3 or 4, a connection member 24 is off-centered transversely, being closer to one of the transverse end edges than to the other of the transverse end edges. . When the heating elements are in place in the electric heater, the connection members are thus offset transversely with respect to a longitudinal and vertical median plane of the heating body, being closer to the front edge 6, respectively to the rear edge 8, than on the other side.
Tel qu’illustré sur la figure 6 par exemple, pour un élément chauffant 4 donné, le premier organe de connexion 24a de la première plaque 22a et le deuxième organe de connexion 24b de la deuxième plaque 22b sont d’une part disposés plus proche du bord avant 6 que du bord arrière 8, ou plus proche du bord arrière 8 que du bord avant 6, et d’autre part sont alignés l’une de l’autre selon une direction parallèle à la direction longitudinale L. As illustrated in FIG. 6 for example, for a given heating element 4, the first connection member 24a of the first plate 22a and the second connection member 24b of the second plate 22b are on the one hand arranged closer to the front edge 6 than the rear edge 8, or closer to the rear edge 8 than the front edge 6, and on the other hand are aligned with each other in a direction parallel to the longitudinal direction L.
Les éléments chauffants 4 peuvent être répartis en un premier ensemble d’éléments chauffants 4a et un deuxième ensemble d’éléments chauffants 4b en fonction de la position des organes de connexion par rapport au bord avant ou au bord arrière, pour une extrémité longitudinale donnée. Plus particulièrement, pour une extrémité longitudinale donnée, les organes de connexion 24 des plaques 22 du premier ensemble d’éléments chauffants 4a sont disposées plus proches du bord avant 6 et les organes de connexion 24 des plaques 22 du deuxième ensemble d’éléments chauffants 4b sont disposées plus proches du bord arrière 8 des éléments chauffants 4. The heating elements 4 can be divided into a first set of heating elements 4a and a second set of heating elements 4b depending on the position of the connection members relative to the front edge or to the rear edge, for a given longitudinal end. More particularly, for a given longitudinal end, the connecting members 24 of the plates 22 of the first set of heating elements 4a are arranged closer to the front edge 6 and the connecting members 24 of the plates 22 of the second set of heating elements 4b are arranged closer to the rear edge 8 of the heating elements 4.
Dans cette configuration, le premier ensemble d’éléments chauffants 4a et le deuxième ensemble d’éléments chauffants 4b peuvent être reliés à l’unité électronique de commande 14 par des moyens de raccordement différents, de manière simple. L’unité électronique de commande 14 est ainsi apte à émettre une première instruction de commande au premier ensemble d’éléments chauffants 4a et une deuxième instruction de commande au deuxième ensemble d’éléments chauffants 4b, les instructions de commande pouvant ainsi être similaires ou différentes l’une de l’autre. Ainsi selon l’invention, le premier ensemble d’éléments chauffants 4a peut être chauffé de façon similaire ou distincte du deuxième ensemble d’éléments chauffants 4b, générant ainsi deux zones de chauffe distinctes l’une de l’autre selon la direction verticale, perpendiculaire à la paroi de fond. In this configuration, the first set of heating elements 4a and the second set of heating elements 4b can be connected to the electronic control unit 14 by different connection means, easy way. The electronic control unit 14 is thus capable of transmitting a first control instruction to the first set of heating elements 4a and a second control instruction to the second set of heating elements 4b, the control instructions thus being able to be similar or different one from the other. Thus according to the invention, the first set of heating elements 4a can be heated in a similar or distinct manner from the second set of heating elements 4b, thus generating two distinct heating zones from each other in the vertical direction, perpendicular to the back wall.
Ici, et tel que plus particulièrement visible sur la figure 2, le premier ensemble d’éléments chauffants 4a est disposé entre la paroi de fond 18 du boîtier 16 et le deuxième ensemble d’éléments chauffants 4b. Cependant, un radiateur électrique 1 dont le deuxième ensemble d’éléments chauffants 4b est disposé entre la paroi de fond 18 du boîtier 16 et le premier ensemble d’éléments chauffants 4a ne sortirait pas pour autant du cadre de l’invention. Here, and as more particularly visible in Figure 2, the first set of heating elements 4a is arranged between the bottom wall 18 of the housing 16 and the second set of heating elements 4b. However, an electric heater 1, the second set of heating elements 4b of which is arranged between the bottom wall 18 of the casing 16 and the first set of heating elements 4a would not thereby depart from the scope of the invention.
Tel que cela a été évoqué précédemment, les éléments chauffants 4, disposés selon l’invention parallèlement à la paroi de fond 28 agencée entre le corps de chauffe et l’unité électronique de commande 14, sont reliés aux composants électroniques de cette unité électronique de commande, via au moins un composant de connexion électrique additionnel, qui prend ici la forme d’un ensemble de raccordement électrique 30, 32. As mentioned above, the heating elements 4, arranged according to the invention parallel to the bottom wall 28 arranged between the heating body and the electronic control unit 14, are connected to the electronic components of this electronic control unit. control, via at least one additional electrical connection component, which here takes the form of an electrical connection assembly 30, 32.
Dans l’exemple illustré sur les figures 2 et 3, le corps de chauffe 2 comprend un premier ensemble de raccordement 30 électrique et un deuxième ensemble de raccordement 32 électrique chacun disposé à l’une des extrémités longitudinales des éléments chauffants 4, chacun des ensembles de raccordement électrique 30, 32 comprenant au moins une broche de raccordement 34, 36 reliant électriquement des organes de connexion 24 des plaques 22 des éléments chauffants 4 à l’unité électronique de commande 14. In the example illustrated in Figures 2 and 3, the heating body 2 comprises a first electrical connection assembly 30 and a second electrical connection assembly 32 each disposed at one of the longitudinal ends of the heating elements 4, each of the sets electrical connection 30, 32 comprising at least one connection pin 34, 36 electrically connecting connection members 24 of the plates 22 of the heating elements 4 to the electronic control unit 14.
Ces ensembles de raccordement électrique s’étendent parallèlement l’un à l’autre, chacun des ensembles de raccordement électrique 30, 32 s’étendant depuis l’unité électronique de commande 14 perpendiculairement à la paroi de fond 18 du boîtier 16, et donc perpendiculairement aux éléments chauffants 4. Un circuit électrique peut ainsi être formé pour chaque élément chauffant, entre l’unité électronique de commande, un premier ensemble de raccordement électrique 30 et un premier organe de connexion 24a au niveau d’une première extrémité longitudinale, la première plaque 22a correspondante, les éléments résistifs, la deuxième plaque 22b et le deuxième organe de connexion 24b associée au niveau de la deuxième extrémité longitudinale puis le deuxième ensemble de raccordement électrique. These electrical connection assemblies extend parallel to each other, each of the electrical connection assemblies 30, 32 extending from the electronic control unit 14 perpendicular to the bottom wall 18 of the box 16, and therefore perpendicular to the heating elements 4. An electrical circuit can thus be formed for each heating element, between the electronic control unit, a first electrical connection assembly 30 and a first connection member 24a at the level of a first longitudinal end, the corresponding first plate 22a, the resistive elements, the second plate 22b and the second connection member 24b associated at the level of the second longitudinal end then the second electrical connection assembly.
Chaque ensemble de raccordement électrique 30, 32 comprend dans l’exemple illustré une première broche 34 et une deuxième broche 36, chacune des broches 34, 36 d’un ensemble de raccordement électrique disposé à une extrémité longitudinale donnée des éléments chauffants 2 étant reliée aux organes de connexion 24 de l’un ou l’autre des ensembles d’éléments chauffants 4. Les broches 34, 36 s’étendent parallèlement les unes aux autres le long de la direction verticale V depuis l’unité électronique de commande 14 vers le corps de chauffe 2 de sorte qu’elles soient en contact avec des organes de connexion 24 des éléments chauffants 4. Les broches 34, 36 assurent une liaison électrique entre plusieurs organes de connexion 24 de plusieurs plaques 22 d’éléments chauffants et l’unité électronique de commande 14, ce qui est notamment possible du fait de l’alignement vertical d’au moins une partie des organes de connexion disposés à une même extrémité longitudinale du corps de chauffe.Each electrical connection assembly 30, 32 comprises in the illustrated example a first pin 34 and a second pin 36, each of the pins 34, 36 of an electrical connection assembly arranged at a given longitudinal end of the heating elements 2 being connected to the connection members 24 of one or the other of the sets of heating elements 4. The pins 34, 36 extend parallel to each other along the vertical direction V from the electronic control unit 14 towards the heating body 2 so that they are in contact with connection members 24 of the heating elements 4. The pins 34, 36 provide an electrical connection between several connection members 24 of several plates 22 of heating elements and the unit control electronics 14, which is possible in particular due to the vertical alignment of at least a part of the connection members arranged at the same longitudinal end of the heating body.
Les premières broches 34 présentent une hauteur inférieure aux deuxième broches 36, les hauteurs étant mesurées le long d’une direction parallèle à la direction verticale V entre l’unité électronique de commande 14 et une extrémité libre des broches 34, 36. The first pins 34 have a lower height than the second pins 36, the heights being measured along a direction parallel to the vertical direction V between the electronic control unit 14 and a free end of the pins 34, 36.
Par exemple, le premier ensemble de raccordement électrique 30 comprend une première broche 34 courte et une deuxième broche 36 longue, la première broche 34 reliant électriquement les organes de connexion 24 disposées aux premières extrémités longitudinales 26 du premier ensemble d’éléments chauffants 4a à l’unité électronique de commande 14, tandis que la deuxième broche 36 relie électriquement les organes de connexion 24 disposées aux premières extrémités longitudinales 26 du deuxième ensemble d’éléments chauffants 4b à l’unité électronique de commande 14. Similairement, le deuxième ensemble de raccordement électrique 32 comprend également une première broche 34 courte et une deuxième broche 36 longue, la première broche 34 reliant électriquement les organes de connexion 24 disposées aux deuxièmes extrémités longitudinales 28 du premier ensemble d’éléments chauffants 4a à l’unité électronique de commande 14, tandis que la deuxième broche 36 relie électriquement les organes de connexion 24 disposées aux deuxièmes extrémités longitudinales 28 du deuxième ensemble d’éléments chauffants 4b à l’unité électronique de commande 14. For example, the first electrical connection assembly 30 comprises a first short pin 34 and a second long pin 36, the first pin 34 electrically connecting the connection members 24 arranged at the first longitudinal ends 26 of the first set of heating elements 4a to the electronic control unit 14, while the second pin 36 electrically connects the connection members 24 arranged at the first longitudinal ends 26 of the second set of heating elements 4b to the electronic control unit 14. Similarly, the second electrical connection assembly 32 also comprises a first short pin 34 and a second long pin 36, the first pin 34 electrically connecting the connection members 24 arranged at the second longitudinal ends 28 of the first set of heating elements 4a to the electronic unit 14, while the second pin 36 electrically connects the connection members 24 arranged at the second longitudinal ends 28 of the second set of heating elements 4b to the electronic control unit 14.
La première broche 34 courte de chacun des raccordements électriques 30, 32 s’étend ainsi au niveau des organes de connexion 24 du premier ensemble d’éléments chauffants 4a, c’est-à-dire plutôt au niveau du bord arrière 8 des éléments chauffants 4. De plus, les premières broches 34 présentent une hauteur telle qu’elle est raccordée aux organes de connexion 24 du premier ensemble d’éléments chauffants 4a sur toute sa hauteur, depuis la paroi de fond 18 jusqu’à son extrémité libre. The first short pin 34 of each of the electrical connections 30, 32 thus extends at the level of the connection members 24 of the first set of heating elements 4a, that is to say rather at the level of the rear edge 8 of the heating elements 4. In addition, the first pins 34 have a height such that it is connected to the connection members 24 of the first set of heating elements 4a over its entire height, from the bottom wall 18 to its free end.
La deuxième broche 36 longue de chacun des raccordements électriques 30, 32 s’étend quant à elle au niveau des organes de connexion 24 du deuxième ensemble d’éléments chauffants 4b, c’est-à-dire plutôt au niveau du bord avant 6 des éléments chauffants 4. Les deuxièmes broches 36 présentent chacune une première portion 37 et une deuxième portion 39 s’étendant entre la première portion 37 et l’extrémité libre de la deuxième broche 36. La première portion 37 de la deuxième broche 36 présente une hauteur sensiblement similaire à celle de la première broche 34. La deuxième portion 39 est la portion de la deuxième broche 36 qui est raccordée aux organes de connexion 24 du deuxième ensemble d’éléments chauffants 4b sur sensiblement toute sa hauteur jusqu’à son extrémité libre. The second long pin 36 of each of the electrical connections 30, 32 extends for its part at the level of the connection members 24 of the second set of heating elements 4b, that is to say rather at the level of the front edge 6 of the heating elements 4. The second pins 36 each have a first portion 37 and a second portion 39 extending between the first portion 37 and the free end of the second pin 36. The first portion 37 of the second pin 36 has a height substantially similar to that of the first pin 34. The second portion 39 is the portion of the second pin 36 which is connected to the connection members 24 of the second set of heating elements 4b over substantially its entire height up to its free end.
Tel que visible sur la figure 4, certains éléments chauffants 4 du premier ensemble d’éléments chauffants 4a présentent un plot de maintien 41 de la première portion 37 de la deuxième broche 36. Les plots de maintien 41 s’étendent ainsi depuis les extrémités longitudinales des tubes le long de la direction longitudinale L de sorte que la première portion 37 des deuxièmes broches 36 longues soient en appui sur ces plots de maintien 41. Il résulte de ce qui précède que l’unité électronique de commande 14 est apte à émettre une première instruction de commande au premier ensemble d’éléments chauffants 4a, via les premières broches 34 de chaque ensemble de raccordement 30, 32, et une deuxième instruction de commande au deuxième ensemble d’éléments chauffants 4b, via les deuxièmes broches 36 de chaque ensemble de raccordement. Tel qu’évoqué précédemment, ces instructions de commande sont indépendantes et peuvent varier l’une de l’autre, de sorte que deux zones de chauffe distinctes l’une de l’autre sont générées le long la direction verticale, perpendiculaire à la paroi de fond. As seen in Figure 4, some heating elements 4 of the first set of heating elements 4a have a holding stud 41 of the first portion 37 of the second pin 36. The holding studs 41 thus extend from the longitudinal ends tubes along the longitudinal direction L so that the first portion 37 of the second long pins 36 rest on these holding studs 41. It follows from the above that the electronic control unit 14 is capable of transmitting a first control instruction to the first set of heating elements 4a, via the first pins 34 of each connection set 30, 32, and a second instruction control to the second set of heating elements 4b, via the second pins 36 of each connection set. As mentioned above, these control instructions are independent and can vary from each other, so that two separate heating zones from each other are generated along the vertical direction, perpendicular to the wall. background.
Dans l’exemple illustré, le support 10 comprend au moins un barreau 40 s’étendant parallèlement à la direction d’extension principale des éléments chauffants 4, c’est-à-dire parallèlement à la direction longitudinale L, entre les parois latérales 12 du support 10 et participant à délimiter verticalement au moins les deux zones de chauffe à travers lesquels peut circuler un flux d’air. Le barreau 40, qui permet ici de délimiter visuellement les deux zones de chauffe du corps de chauffe 2, peut notamment être utile lorsque le radiateur électrique est en place dans l’installation de ventilation, de chauffage et/ou d’air climatisé. Cette installation peut notamment comporter deux conduits distincts avec une paroi commune les délimitant, chaque conduit débouchant sur une des zones de chauffe lorsque le radiateur électrique est en place. Le barreau peut ainsi être disposé en regard de la paroi commune, pour participer notamment à la compartimentation du flux d’air amené à passer dans telle ou telle zone du corps de chauffe. In the example illustrated, the support 10 comprises at least one bar 40 extending parallel to the main direction of extension of the heating elements 4, that is to say parallel to the longitudinal direction L, between the side walls 12 of the support 10 and participating in vertically delimiting at least the two heating zones through which an air flow can circulate. The bar 40, which here makes it possible to visually delimit the two heating zones of the heating body 2, can in particular be useful when the electric heater is in place in the ventilation, heating and/or air conditioning installation. This installation may in particular comprise two separate ducts with a common wall delimiting them, each duct leading to one of the heating zones when the electric heater is in place. The bar can thus be arranged opposite the common wall, in order to participate in particular in the compartmentalization of the flow of air brought to pass in such or such zone of the heating body.
L’invention telle qu’elle vient d’être décrite permet de répondre au but qu’elle s’est fixée, à savoir de permettre une mise en fonctionnement sélective de différentes zones du corps de chauffe et plus particulièrement des zones voisines se superposant verticalement, selon une direction d’empilement perpendiculaire à la paroi de fond interposée entre l’unité électronique de commande 14 et le corps de chauffe 2, ceci étant notamment rendu possible par la disposition des éléments chauffants 4 en parallèle de cette paroi de fond et par l’agencement des ensembles de raccordement électrique 30, 32 au sein du corps de chauffe 2. La présente invention ne saurait toutefois se limiter aux moyens et configurations décrits et illustrés ici et elle s’étend également à tout moyen et configuration équivalents ainsi qu’à toute combinaison techniquement opérante de tels moyens. A titre d’exemple non limitatif, le radiateur électrique selon l’invention pourrait présenter plus de deux zones de chauffe, avec un plus grand nombre de broches pour chaque ensemble de raccordement, et un nombre équivalent d’ensembles d’organes de connexion dès lors que chaque ensemble est décalé transversalement par rapport aux autres ensembles pour permettre le raccordement spécifique de cet ensemble par l’une des broches. The invention as it has just been described makes it possible to meet the aim it has set itself, namely to allow selective operation of different zones of the heating body and more particularly of neighboring zones overlapping vertically. , in a stacking direction perpendicular to the bottom wall interposed between the electronic control unit 14 and the heating body 2, this being made possible in particular by the arrangement of the heating elements 4 in parallel with this bottom wall and by the arrangement of the electrical connection assemblies 30, 32 within the heating body 2. The present invention cannot however be limited to the means and configurations described and illustrated here and it also extends to any equivalent means and configuration as well as to any technically effective combination of such means. By way of non-limiting example, the electric heater according to the invention could have more than two heating zones, with a greater number of pins for each connection assembly, and an equivalent number of sets of connection members from when each set is offset transversely relative to the other sets to allow the specific connection of this set by one of the pins.

Claims

REVENDICATIONS
1. Radiateur électrique (i) d’une installation de ventilation, de chauffage et/ou d’air climatisé, le radiateur électrique (i) comprenant au moins un corps de chauffe (2) équipé d’éléments chauffants (4) agencés les uns à côtés des autres de sorte à délimiter entre eux un espace de circulation d’un flux d’air à chauffer, le radiateur électrique (1) comprenant au moins une unité électronique de commande (14) configurée pour alimenter et commander le fonctionnement des éléments chauffants (4) et un boîtier (16) dans lequel est logé l’unité électronique de commande (14), le corps de chauffe (2) étant fixé sur le boîtier (16), le boîtier (16) comprenant une paroi de fond (18) en regard du corps de chauffe (2) s’étendant dans un plan principal d’extension, caractérisé en ce que les éléments chauffants (4) du corps de chauffe (2) s’étendent principalement selon une direction longitudinale (L), parallèlement au plan principal d’extension de la paroi de fond (18). 1. Electric radiator (i) of a ventilation, heating and/or air conditioning installation, the electric radiator (i) comprising at least one heating body (2) equipped with heating elements (4) arranged next to each other so as to delimit between them a space for circulation of an air flow to be heated, the electric heater (1) comprising at least one electronic control unit (14) configured to supply and control the operation of the heating elements (4) and a casing (16) in which the electronic control unit (14) is housed, the heating body (2) being fixed to the casing (16), the casing (16) comprising a wall of bottom (18) opposite the heating body (2) extending in a main plane of extension, characterized in that the heating elements (4) of the heating body (2) extend mainly in a longitudinal direction ( L), parallel to the main plane of extension of the bottom wall (18).
2. Radiateur électrique (1) selon la revendication précédente, dans lequel au moins un élément chauffant (4) du corps de chauffe (2) comprend des éléments résistifs (20) et des plaques (22, 22a, 22b) formant des électrodes, chacune des plaques (22, 22a, 22b) étant prolongée longitudinalement à une extrémité par un organe de connexion (24, 24a, 24b), l’élément chauffant (4) présentant à chacune de ses extrémités longitudinales un organe de connexion (24, 24a, 24b) d’une plaque (22, 22a, 22b). 2. Electric heater (1) according to the preceding claim, wherein at least one heating element (4) of the heating body (2) comprises resistive elements (20) and plates (22, 22a, 22b) forming electrodes, each of the plates (22, 22a, 22b) being extended longitudinally at one end by a connection member (24, 24a, 24b), the heating element (4) having at each of its longitudinal ends a connection member (24, 24a, 24b) of a plate (22, 22a, 22b).
3. Radiateur électrique (1) selon la revendication précédente, dans lequel le corps de chauffe (2) présente une face avant (AV) et une face arrière (AR) de sorte que le flux d’air est apte à circuler à travers le corps de chauffe depuis la face avant (AV) vers la face arrière (AR), au moins un élément chauffant (4) du corps de chauffe (2) présentant un bord avant (6) orienté vers la face avant (AV) du corps de chauffe (2) et un bord arrière (8) orienté vers la face arrière (AR) du corps de chauffe (2), les organes de connexion (24, 24a, 24b) des plaques (22, 22a, 22b) d’un élément chauffant (4) s’alignant le long d’une direction parallèle à la direction d’extension principale de l’élément chauffant (4) en étant plus proche du bord avant (6) ou du bord arrière (8). 3. Electric radiator (1) according to the preceding claim, in which the heating body (2) has a front face (AV) and a rear face (AR) so that the flow of air is able to circulate through the heating body from the front face (AV) towards the rear face (AR), at least one heating element (4) of the heating body (2) having a front edge (6) oriented towards the front face (AV) of the body heating element (2) and a rear edge (8) oriented towards the rear face (AR) of the heating body (2), the connection members (24, 24a, 24b) of the plates (22, 22a, 22b) of a heating element (4) aligning along a direction parallel to the main extension direction of the heating element (4) being closer to the front edge (6) or the rear edge (8).
4. Radiateur électrique (1) selon la revendication précédente, dans lequel le corps de chauffe (2) comprend un premier ensemble d’éléments chauffants (4a) et un deuxième ensemble d’éléments chauffants (4b), les organes de connexion (24, 24a, 24b) des plaques (22, 22a, 22b) du premier ensemble d’éléments chauffants (4a) étant disposées plus proches du bord avant (6) tandis que les organes de connexion (24, 24a, 24b) des plaques (22, 22a, 22b) du deuxième ensemble d’éléments chauffants (4b) sont disposées plus proches du bord arrière (8) des éléments chauffants (4). 4. Electric heater (1) according to the preceding claim, wherein the heating body (2) comprises a first set of heating elements (4a) and a second set of heating elements (4b), the connecting members (24, 24a, 24b) of the plates (22, 22a, 22b) of the first set of heating elements (4a) being arranged closer to the front edge (6) while the connection members (24, 24a, 24b) of the plates (22, 22a, 22b) of the second set of heating elements (4b) are arranged closer to the rear edge (8) of the heating elements (4).
5. Radiateur électrique (1) selon l’une quelconque des revendications précédentes en combinaison de la revendication 2, dans lequel le corps de chauffe (2) comprend un premier ensemble de raccordement (30) électrique et un deuxième ensemble de raccordement (32) électrique chacun disposé à l’une des extrémités longitudinales des éléments chauffants (4), chacun des ensembles de raccordement (30, 32) électrique comprenant au moins une broche (34, 36) de raccordement reliant électriquement des organes de connexion (24, 24a, 24b) des plaques (22, 22a, 22b) des éléments chauffants (4) à l’unité électronique de commande (14). 5. Electric radiator (1) according to any one of the preceding claims in combination with claim 2, in which the heating body (2) comprises a first electrical connection assembly (30) and a second electrical connection assembly (32). electrical each disposed at one of the longitudinal ends of the heating elements (4), each of the electrical connection assemblies (30, 32) comprising at least one connection pin (34, 36) electrically connecting connection members (24, 24a , 24b) of the plates (22, 22a, 22b) of the heating elements (4) to the electronic control unit (14).
6. Radiateur électrique (1) selon la revendication précédente, dans lequel chacun des ensembles de raccordement (30, 32) électrique s’étend depuis l’unité électronique de commande (14) perpendiculairement à la paroi de fond (18) du boîtier (16). 6. Electric heater (1) according to the preceding claim, wherein each of the electrical connection assemblies (30, 32) extends from the electronic control unit (14) perpendicular to the bottom wall (18) of the housing ( 16).
7. Radiateur électrique (1) selon l’une quelconque des revendications 5 ou 6 en combinaison avec la revendication 4, dans lequel chacun des ensembles de raccordement (30, 32) électrique comprend une première broche (34) de raccordement reliée aux organes de connexion (24, 24a, 24b) des plaques (22, 22a, 22b) du premier ensemble d’éléments chauffants (4a), et une deuxième broche (36) de raccordement distincte de la première broche (34) de raccordement et reliée aux organes de connexion (24, 24a, 24b) des plaques (22, 22a, 22b) du deuxième ensemble d’éléments chauffants (4b). 7. Electric heater (1) according to any one of claims 5 or 6 in combination with claim 4, wherein each of the electrical connection assemblies (30, 32) comprises a first connection pin (34) connected to the connection (24, 24a, 24b) of the plates (22, 22a, 22b) of the first set of heating elements (4a), and a second connection pin (36) distinct from the first connection pin (34) and connected to the connecting members (24, 24a, 24b) of the plates (22, 22a, 22b) of the second set of heating elements (4b).
8. Radiateur électrique (1) selon l’une quelconque des revendications précédentes en combinaison avec la revendication 2, dans lequel au moins un élément chauffant (4) comprend plusieurs éléments résistifs (20), sous forme de pierres à effet CTP, interposés entre deux plaques (22) formant chacune une électrode. 8. Electric radiator (1) according to any one of the preceding claims in combination with claim 2, in which at least one heating element (4) comprises several resistive elements (20), in the form of PTC effect stones, interposed between two plates (22) each forming an electrode.
9. Radiateur électrique (1) selon l’une quelconque des revendications précédentes, dans lequel le corps de chauffe (2) comprend un cadre de support (10) des éléments chauffants (4), le cadre présentant des parois latérales (12) s’étendant perpendiculairement à la paroi de fond (18) et entre lesquelles s’étendent les éléments chauffants (4), le cadre comprenant au moins un barreau (40) s’étendant parallèlement à la direction d’extension principale des éléments chauffants (4) entre les parois latérales (12) du cadre et participant à délimiter au moins deux zones de chauffe à travers lesquels peut circuler un flux d’air. 9. Electric radiator (1) according to any one of the preceding claims, in which the heating body (2) comprises a support frame (10) for the heating elements (4), the frame having side walls (12) extending perpendicularly to the bottom wall (18) and between which the heating elements (4) extend, the frame comprising at least one bar (40) extending parallel to the main direction of extension of the heating elements ( 4) between the side walls (12) of the frame and participating in delimiting at least two heating zones through which an air flow can circulate.
10. Installation de ventilation, de chauffage et/ ou d’air climatisé, comprenant au moins un dispositif de ventilation apte à forcer la circulation d’un flux d’air à travers l’installation de ventilation, de chauffage et/ou d’air climatisé et un radiateur électrique (1) conforme à l’une quelconque des revendications précédentes à travers lequel est chauffé le flux d’air. 10. Installation of ventilation, heating and / or air conditioning, comprising at least one ventilation device capable of forcing the circulation of an air flow through the installation of ventilation, heating and / or air conditioning and an electric heater (1) according to any preceding claim through which the air flow is heated.
11. Installation de ventilation, de chauffage et/ ou d’air climatisé selon la revendication précédente en combinaison avec la revendication 9, comprenant deux conduits de chauffe, l’un des conduits guidant au moins une partie du flux d’air vers l’une des zones de chauffe du radiateur électrique (1), l’autre conduit guidant au moins une partie du flux d’air vers l’autre zone de chauffe du radiateur électrique (1). 11. Installation of ventilation, heating and / or air conditioning according to the preceding claim in combination with claim 9, comprising two heating ducts, one of the ducts guiding at least part of the air flow towards the one of the heating zones of the electric radiator (1), the other conduit guiding at least part of the air flow towards the other heating zone of the electric radiator (1).
19 19
PCT/EP2022/074014 2021-09-03 2022-08-30 Electric radiator of a ventilation, heating and/or air-conditioning system WO2023031150A1 (en)

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FR2109271A FR3126837B1 (en) 2021-09-03 2021-09-03 Electric radiator for a ventilation, heating and/or air conditioning installation.
FRFR2109271 2021-09-03

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Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7667165B2 (en) * 2004-02-10 2010-02-23 Catem GmbH & Co., LG Electric heating device for motor vehicles
EP2346302B1 (en) * 2010-01-14 2017-03-15 Mahle Behr France Rouffach S.A.S Heater for a vehicle
EP3310126A1 (en) * 2016-10-11 2018-04-18 DBK David + Baader GmbH High voltage air heater and method for the assembly of its heating elements
EP3328157A1 (en) * 2015-07-22 2018-05-30 Japan Climate Systems Corporation Electric heater
US20200056809A1 (en) * 2017-02-14 2020-02-20 Valeo Systemes Thermiques Electrical connection interface of an electric heating device for a motor vehicle

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7667165B2 (en) * 2004-02-10 2010-02-23 Catem GmbH & Co., LG Electric heating device for motor vehicles
EP2346302B1 (en) * 2010-01-14 2017-03-15 Mahle Behr France Rouffach S.A.S Heater for a vehicle
EP3328157A1 (en) * 2015-07-22 2018-05-30 Japan Climate Systems Corporation Electric heater
EP3310126A1 (en) * 2016-10-11 2018-04-18 DBK David + Baader GmbH High voltage air heater and method for the assembly of its heating elements
US20200056809A1 (en) * 2017-02-14 2020-02-20 Valeo Systemes Thermiques Electrical connection interface of an electric heating device for a motor vehicle

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