EP3728962B1 - Electric heating device with electrode housing station - Google Patents

Electric heating device with electrode housing station Download PDF

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Publication number
EP3728962B1
EP3728962B1 EP18839826.7A EP18839826A EP3728962B1 EP 3728962 B1 EP3728962 B1 EP 3728962B1 EP 18839826 A EP18839826 A EP 18839826A EP 3728962 B1 EP3728962 B1 EP 3728962B1
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EP
European Patent Office
Prior art keywords
docking station
heating device
electrodes
heating
electrode
Prior art date
Legal status (The legal status 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 status listed.)
Active
Application number
EP18839826.7A
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German (de)
French (fr)
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EP3728962A1 (en
Inventor
Yann COUAPEL
Erwan Gogmos
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Valeo Systemes Thermiques SAS
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Valeo Systemes Thermiques SAS
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Publication of EP3728962A1 publication Critical patent/EP3728962A1/en
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Publication of EP3728962B1 publication Critical patent/EP3728962B1/en
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Classifications

    • 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
    • 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
    • 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
    • F24H9/0052—Details for air heaters
    • F24H9/0057—Guiding means
    • F24H9/0063—Guiding means in air channels
    • 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
    • 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
    • F24H2250/10—Electrodes
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the invention relates to a heating device for an air conditioning unit, comprising a docking station for the heating electrodes.
  • the invention also relates to an air conditioning unit comprising such a heating device.
  • the invention relates to a method of mechanical and electrical connection of the electrodes of the heating device.
  • the invention will find its applications, in particular, in the field of motor vehicles.
  • Electric heating devices intended to be integrated into vehicle air conditioning units are known. These are either additional radiators, combined with heating radiators traversed by a heat transfer fluid, in vehicles with internal combustion engines, or main radiators, in electric or hybrid vehicles.
  • Such heating devices comprise a heating body accommodating heating units provided with heating elements supplied with electric current by electrodes. For electrical safety reasons, it may be necessary to isolate the heating elements and their supply electrodes from the outside.
  • the heating units comprise tubes inside which the heating elements and their electrodes are located, the inner surface of the tubes being provided with an electrically insulating layer in order to insulate the heating elements and their electrodes.
  • These heating devices comprise a distribution unit capable of controlling the current flowing in the heating units via in particular an electronic card.
  • switches are welded to control the current flowing in the electrodes.
  • Each switch is electrically connected on the one hand to the electronic card, and on the other hand to an electrode.
  • the document EP 3 228 950 describes a heating device for an air conditioning unit comprising a heating body supplied with current via a distribution unit, the heating body comprising electrodes and the distribution unit comprising a docking station having a plurality of housings accommodating these electrodes .
  • the object of the present invention is to overcome the various drawbacks stated above, by means of a heating device allowing an electrical and mechanical connection between the heating body and the distribution unit which is simple to implement and which ensures correct positioning of all parts at the time of connection, as well as for the entire life of the heating device and this with a limitation of the relative movements between the parts in order to avoid vibration problems and to improve the reliability of the heating device.
  • This device is mainly characterized in that the switches are fixed on the other hand on an electronic current supply card belonging to the distribution unit, the docking station comprising a lower face facing the electronic circuit board and an upper face facing the tubes.
  • the main idea of this invention consists in providing a docking station, which mediates between the parts belonging to the heating body and the parts belonging to the distribution unit, and which must be connected to each other.
  • this docking station makes it possible to position the electrodes correctly, with a view to their connection.
  • the docking station makes it possible to correctly position mechanical and electrical connection means, which will be described later.
  • the docking station thus constitutes a stable base, which serves as a reference for the positioning of the various parts.
  • the invention also relates to an air conditioning unit comprising a heating device as described above.
  • the invention relates to an electric heating device 1 .
  • a heating device 1 that is to say intended to be powered by a direct current (DC) or alternating current (AC) having an electrical voltage greater than 60 V, in particular between 60 and 1000 V, more particularly between 180 and 600 V, and/or making it possible to release a heating power on the air or an electrical power consumed greater than 2 kW, in particular between 2 kW and 10 kW.
  • DC direct current
  • AC alternating current
  • Said heating device 1 comprises a heating body 2 supplied with electric current to heat a flow of air passing through said heating body 2.
  • Said heating body 2 here has a substantially parallelepipedic configuration, extending at the surface. It is intended to be positioned transversely to the air flow to be heated. More specifically, said air flow is intended to be oriented perpendicular to said heating body 2, that is to say perpendicular to the plane of the figure 1 .
  • the heating body 2 is formed by a succession of aligned metal tubes 4. Inside each tube 4 are heating elements 8 through which said current flows.
  • the heating elements 8 are, for example, PTC effect resistors (for positive temperature coefficient). These heating elements 8 are particularly visible in figure 13 .
  • Electrodes 9 are located on either side of heating elements 8 for supplying them with electric current. More particularly, each heating element 8 is surrounded by a positive electrode 9 and a negative electrode 9.
  • layers 12 of electrically insulating and thermally conductive materials are located between each electrode 9 and an inner wall of the tube 4.
  • Each set - tube 4 / heating elements 8 / electrodes 9 - forms what is called a heating unit.
  • Said heating units are selectively supplied with current.
  • each heating unit is supplied with current independently of the others and can therefore be traversed by a different current, in particular by its intensity, from the current traversing the other heating units.
  • the value of the current in play here is in particular the value of the average current or the effective current.
  • the heating body 2 may comprise heat sinks 13, for example fins, in thermal contact relationship with the tubes 4.
  • the heat sinks 13 are positioned, in particular, between said tubes 4. For the sake of clarity, only certain heat sinks 13 extending from the end tubes 4 have been shown, so as not to overload the figure 1 .
  • Said heating body 2 comprises a frame 5, in particular made of plastic material, accommodating said heating units and serving to hold said tubes 4.
  • the tubes 4 are also held in position by means of intermediate plates 22.
  • the heating device 1 further comprises a distribution unit 3 capable of controlling the current flowing in said heating body 2.
  • Said distribution unit 3 is advantageously configured to control the current supplying the heating body 2, in particular the various heating units, in particular using controlled switches 15, making it possible to respectively control a flow of current in each of the heating units. heated.
  • These switches 15 are mounted on a T-shaped electronic card 11.
  • a docking station 6 is provided and located just above the upper face of the electronic card 11. This docking station 6 is particularly visible in picture 3 where the electronic card 11 is not shown for greater clarity.
  • This docking station 6 is thus arranged at the level of the junction between, on the one hand the heating body 2 with its heating units, and on the other hand the distribution unit 3 with its electronic card 11.
  • the docking station 6 consists of an intermediate base facilitating the electrical and mechanical connection of the heating body 2 to the distribution unit 3.
  • this station 6 accommodates on one side the electrodes 9 protruding from the tubes 4, and on the other side the switches 15 able to be soldered to the electronic card 11.
  • the docking station 6 comprises a lower face facing the electronic card 11, and an upper face facing the tubes 4.
  • the docking station 6 consists of a bar , or a strip, extending over the entire length of the heating body 2, following the alignment of the electrodes 9 at the outlet of the tube 4.
  • this space is sized so as to be able to allow other components to be soldered to the electronic card 11, under the docking station 6.
  • each housing 17 accommodating the electrodes 9 and in which there are mechanical and electrical connection means of the electrodes 9 to the distribution unit 3, corresponding to the switches 15. Indeed, inside each housing 17 there is a central hole in which is inserted a switch 15.
  • This switch 15 is more particularly shown in figures 8 to 11 .
  • This is a conventional switch 15, with a first face 19 for electrical connection to the electronic card 11, provided with two pins 7 capable of being soldered to the card 11, and with a second face 18 for electrical connection to the electrode 9, fitted with a female end acting as a quick coupling.
  • this female fitting comprises a plurality of blades 20 hoses capable of exerting pressure on the electrode 9 which penetrates therein. In this case, there are four flexible blades 20 on either side of the electrode 9 which comes to rest on it.
  • each flexible blade 20 has a zigzag shape, making it possible to have several support points 21 on the electrode 9. In particular, each zigzag point 21 comes to bear on the electrode 9.
  • guide studs 14 extend on either side of the central orifice in the direction of the tubes 4. The purpose of these studs 14 is to guide the electrode 9 to 'at its insertion in the switch 15.
  • each housing 17 the faces 14a of the pads located opposite each other are bevelled in the direction of the central orifice so as to form guide ramps for the electrode 9 towards the central orifice where is the switch 15. These studs 14 thus draw a V inside which the electrode 9 is inserted. This guiding of the electrodes 9 makes it possible to improve the assembly between the heating body 2 and the distribution unit 3.
  • the faces 14b of the studs 14 located face-to-face between two successive housings 17 are oriented perpendicular to the docking station 6.
  • the docking station 6 comprises as many housings 17 as there are electrodes 9 present in the heating body 2, each housing 17 receiving an electrode 9.
  • the electrodes 9 each have a free end protruding from the tubes 4. Each free end has a male end piece 10 capable of entering the female end piece of the switch 15.
  • This male end piece 10 can be formed in one piece with the electrode 9, or may consist of a separate part mounted on the electrode 9, as is the case in the example visible in figures 13 and 14 .
  • the male end 10 corresponds to a lug whose first end 10a is mounted and riveted on the electrode 9 for example and whose second end 10b enters the female end of the switch 15.
  • the male ends 10 of the two electrodes 9 extend in the axial direction of the tube 4 but with a transverse offset.
  • the male ends 10 are thus located in staggered rows.
  • the docking station 6 has two staggered housings 17 according to the arrangement of the male ends 10 of the two electrodes 9 corresponding, one positive and the other negative.
  • the switches 15 inserted in these housings 17 are placed at a distance from each other, because it is important to respect an isolation distance between the switches 15 belonging to the positive current line and the switches 15 belonging to the negative current line.
  • the docking station 6 has two rows 6a, 6b of housings 17, the housings 17 of a row 6a being offset with respect to the housings 17 of the other row 6b.
  • One of the rows of housings 17 is located on a positive current line to which the positive electrodes 9 are connected and the other row is located on a negative current line to which the negative electrodes 9 are connected.
  • the docking station 6 is perforated between the adjacent housings 17, via windows 16. This allows the use of a minimum of material and the obtaining of a light bar.
  • the docking station 6 is designed in an electrically insulating material of the plastic type. Such a material also provides good resistance to temperature, non-flammability and humidity.
  • the docking station 6 is obtained by molding or by plastic injection.
  • connection between the heating body 2 and the distribution unit 3 takes place as follows.
  • the docking station 6 is positioned on the electronic card 11, so that its rib 23 comes to rest on the upper surface of the card 11.
  • the switches 15 are introduced into the housings 17 provided for this purpose, and more precisely into the holes of the housings 17.
  • the pins 7 of the switches 15 are then introduced into the small holes provided for this purpose in the electronic card 11.
  • the switches 15 then find themselves in a stable position in the housings 17 of the docking station 6, and it is possible to solder the pins 7 to the electronic card 11.
  • the last step then consists of inserting the male ends 10 of the electrodes 9 into the switches 15 of the docking station 6.
  • This last step can be carried out in a single gesture, via a rectilinear translation of the heating body 2 with respect to the docking station 6, since a switch 15 is provided opposite each male end 10.
  • the invention also relates to an air conditioning unit comprising a heating device 1 as described above.
  • Said air conditioning unit comprises an air flow circulation body inside which said heating device 1 is located.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)
  • Resistance Heating (AREA)
  • Coupling Device And Connection With Printed Circuit (AREA)
  • Direct Air Heating By Heater Or Combustion Gas (AREA)
  • Details Of Fluid Heaters (AREA)

Description

Domaine de l'inventionField of the invention

L'invention concerne un dispositif de chauffage pour boîtier de climatisation, comprenant une station d'accueil pour les électrodes de chauffage. L'invention concerne également un boîtier de climatisation comprenant un tel dispositif de chauffage. Enfin, l'invention se rapporte à un procédé de raccordement mécanique et électrique des électrodes du dispositif de chauffage.The invention relates to a heating device for an air conditioning unit, comprising a docking station for the heating electrodes. The invention also relates to an air conditioning unit comprising such a heating device. Finally, the invention relates to a method of mechanical and electrical connection of the electrodes of the heating device.

L'invention trouvera ses applications, notamment, dans le domaine des véhicules automobiles.The invention will find its applications, in particular, in the field of motor vehicles.

Etat de la techniqueState of the art

Il est connu des dispositifs de chauffage électrique destinés à être intégrés dans des boîtiers de climatisation de véhicule. Il s'agit soit de radiateurs additionnels, combinés avec des radiateurs de chauffage parcourus par un fluide caloporteur, dans les véhicules à moteur thermique, soit de radiateurs principaux, dans les véhicules électriques ou hybrides.Electric heating devices intended to be integrated into vehicle air conditioning units are known. These are either additional radiators, combined with heating radiators traversed by a heat transfer fluid, in vehicles with internal combustion engines, or main radiators, in electric or hybrid vehicles.

De tels dispositifs de chauffage comprennent un corps de chauffe accueillant des unités de chauffe munis d'éléments chauffants alimentés en courant électrique par des électrodes. Pour des raisons de sécurité électrique, il peut être nécessaire d'isoler les éléments chauffants et leurs électrodes d'alimentation de l'extérieur. Pour cela les unités de chauffe comprennent des tubes à l'intérieur desquels sont situés les éléments chauffant et leurs électrodes, la surface intérieure des tubes étant dotée d'une couche isolante électriquement afin d'isoler les éléments chauffant et leurs électrodes.Such heating devices comprise a heating body accommodating heating units provided with heating elements supplied with electric current by electrodes. For electrical safety reasons, it may be necessary to isolate the heating elements and their supply electrodes from the outside. For this, the heating units comprise tubes inside which the heating elements and their electrodes are located, the inner surface of the tubes being provided with an electrically insulating layer in order to insulate the heating elements and their electrodes.

Ces dispositifs de chauffage comprennent une unité de distribution capable de commander le courant circulant dans les unités de chauffe via notamment une carte électronique.These heating devices comprise a distribution unit capable of controlling the current flowing in the heating units via in particular an electronic card.

Sur cette carte électronique, sont soudés des commutateurs permettant de contrôler le courant circulant dans les électrodes. Chaque commutateur est raccordé électriquement d'une part à la carte électronique, et d'autre part à une électrode.On this electronic card, switches are welded to control the current flowing in the electrodes. Each switch is electrically connected on the one hand to the electronic card, and on the other hand to an electrode.

Ce double raccordement n'est pas évident à opérer sur les lignes de production. En particulier, le maintien en position du commutateur pour son soudage sur la carte électronique n'est pas simple à mettre en place, et ce dernier risque de ne pas être exactement orienté comme il le faut, et le raccordement des électrodes dans un second temps est d'autant plus délicat à effectuer.This double connection is not easy to operate on production lines. In particular, maintaining the position of the switch for its soldering on the electronic card is not easy to put in place, and the latter risks not being exactly oriented as it should, and the connection of the electrodes in a second step is all the more difficult to perform.

En effet, outre le raccordement électrique, il existe également un raccordement mécanique à opérer entre chaque commutateur et la carte électronique, pour que toutes les pièces soient correctement positionnées les unes par rapport aux autres aussi bien au moment de leur assemblage que pour toute la durée de vie du dispositif de chauffage de manière générale.In fact, in addition to the electrical connection, there is also a mechanical connection to be made between each switch and the electronic card, so that all the parts are correctly positioned with respect to each other both at the time of their assembly and for the entire duration. life of the heating device in general.

Le document EP 3 228 950 décrit un dispositif de chauffage pour boîtier de climatisation comportant un corps de chauffe alimenté en courant via une unité de distribution, le corps de chauffe comprenant des électrodes et l'unité de distribution comprenant une station d'accueil présentant une pluralité de logements accueillant ces électrodes.The document EP 3 228 950 describes a heating device for an air conditioning unit comprising a heating body supplied with current via a distribution unit, the heating body comprising electrodes and the distribution unit comprising a docking station having a plurality of housings accommodating these electrodes .

Résumé de l'inventionSummary of the invention

La présente invention a pour objectif de pallier les différents inconvénients énoncés ci-dessus, au moyen d'un dispositif de chauffage permettant un raccordement électrique et mécanique entre le corps de chauffe et l'unité de distribution qui soit simple de mise en oeuvre et qui assure un positionnement correct de toutes les pièces au moment du raccordement, ainsi que pour toute la durée de vie du dispositif de chauffage et cela avec une limitation des mouvements relatifs entre les pièces afin d'éviter des problèmes vibratoires et d'améliorer la fiabilité du dispositif de chauffage.The object of the present invention is to overcome the various drawbacks stated above, by means of a heating device allowing an electrical and mechanical connection between the heating body and the distribution unit which is simple to implement and which ensures correct positioning of all parts at the time of connection, as well as for the entire life of the heating device and this with a limitation of the relative movements between the parts in order to avoid vibration problems and to improve the reliability of the heating device.

Ce but est atteint grâce à un dispositif de chauffage pour boîtier de climatisation comportant, de façon classique, un corps de chauffe alimenté en courant via une unité de distribution pour chauffer un flux d'air traversant ledit corps de chauffe, le corps de chauffe comprenant un alignement de tubes dans lesquels se trouvent :

  • des éléments de chauffe parcourus par ledit courant ;
  • des électrodes situées de part et d'autre des éléments de chauffe pour leur alimentation en courant électrique ;
l'unité de distribution comprenant une station d'accueil des électrodes, la station d'accueil présentant une pluralité de logements accueillant les électrodes et dans lesquels se trouvent des moyens de raccordement mécanique et électrique des électrodes à l'unité de distribution, les moyens de raccordement mécanique et électrique des électrodes à l'unité de distribution consistant en des commutateurs positionnés d'une part dans les logements.This object is achieved by means of a heating device for an air conditioning unit comprising, in a conventional manner, a heating body supplied with current via a distribution unit to heat a flow of air passing through said heating body, the heating body comprising an alignment of tubes in which there are:
  • heating elements traversed by said current;
  • electrodes located on either side of the heating elements for supplying them with electric current;
the distribution unit comprising a docking station for the electrodes, the docking station having a plurality of housings accommodating the electrodes and in which there are means for mechanical and electrical connection of the electrodes to the distribution unit, the means mechanical and electrical connection of the electrodes to the distribution unit consisting of switches positioned on the one hand in the housings.

Ce dispositif se caractérise à titre principal en ce que les commutateurs sont fixés d'autre part sur une carte électronique d'alimentation en courant appartenant à l'unité de distribution,
la station d'accueil comportant une face inférieure en vis-à-vis avec la carte de circuit électronique et une face supérieure en vis-à-vis avec les tubes.This device is mainly characterized in that the switches are fixed on the other hand on an electronic current supply card belonging to the distribution unit,
the docking station comprising a lower face facing the electronic circuit board and an upper face facing the tubes.

L'idée principale de cette invention consiste à prévoir une station d'accueil, qui fasse l'intermédiaire entre les pièces appartenant au corps de chauffe et les pièces appartenant à l'unité de distribution, et qui doivent être raccordées les unes aux autres. En l'espèce, cette station d'accueil permet de positionner correctement les électrodes, en vue de leur raccordement. De plus, la station d'accueil permet de positionner correctement des moyens de raccordement mécanique et électrique, qui seront décrits plus loin. La station d'accueil constitue ainsi une base stable, qui sert de référence pour le positionnement des différentes pièces.The main idea of this invention consists in providing a docking station, which mediates between the parts belonging to the heating body and the parts belonging to the distribution unit, and which must be connected to each other. In this case, this docking station makes it possible to position the electrodes correctly, with a view to their connection. In addition, the docking station makes it possible to correctly position mechanical and electrical connection means, which will be described later. The docking station thus constitutes a stable base, which serves as a reference for the positioning of the various parts.

Selon les différents modes de réalisation de l'invention, qui pourront être pris ensemble ou séparément :

  • lesdits moyens de raccordement mécanique et électrique des électrodes à l'unité de distribution consistent en des commutateurs positionnés d'une part dans les logements et fixés d'autre part sur une carte électronique d'alimentation en courant appartenant à l'unité de distribution : la station d'accueil permet ainsi de maintenir en position ces commutateurs, afin que le raccordement mécanique et électrique puisse avoir lieu dans les meilleures conditions.
  • chaque logement comporte un orifice central à travers lequel saille le commutateur, ledit orifice étant dimensionné de manière à maintenir en position le commutateur lors de sa fixation sur la carte électronique.
  • chaque commutateur présente une première face de raccordement électrique à la carte électronique, dotée d'au moins une broche apte à être soudée sur la carte, et une seconde face de raccordement électrique à l'électrode, dotée d'un embout femelle dans laquelle s'insère un embout mâle de l'électrode.
  • chaque électrode comporte une extrémité libre sur laquelle se trouve l'embout mâle, les embouts mâles des deux électrodes relatives à un élément de chauffe étant disposés en quinconce.
  • pour chaque élément de chauffe, la station d'accueil présente deux logements en quinconce selon la disposition des embouts mâles des deux électrodes correspondantes.
  • l'embout mâle de l'électrode s'insère dans l'embout femelle du commutateur, ledit commutateur comportant au moins une lame flexible apte à exercer une pression sur l'embout mâle de l'électrode de manière à la maintenir en position et réaliser la connexion électrique.
  • l'embout mâle de l'électrode consiste en une patte, ledit commutateur comportant une pluralité de lames flexibles exerçant un appui de part et d'autre de ladite patte.
  • chaque logement comporte des moyens de guidage de l'électrode.
  • lesdits moyens de guidage consistent en deux plots localisés de part et d'autre du logement et dont les faces en vis-à-vis sont biseautées en direction du centre du logement de manière à former des rampes de guidage de l'électrode.
  • ladite station d'accueil consiste en une barre s'étendant sur toute la longueur du corps de chauffe, suivant l'alignement des électrodes.
  • la station d'accueil comporte autant de logements que d'électrodes présentes dans le corps de chauffe, chaque logement accueillant une électrode.
  • ladite station d'accueil présente deux rangées de logements, les logements d'une rangée étant décalés par rapport aux logements de l'autre rangée.
  • ladite station d'accueil est ajourée entre les logements adjacents.
  • la station d'accueil est conçue en matière isolante électriquement, du type plastique.
  • la station d'accueil comporte une face en vis-à-vis de la carte électronique, ladite face étant dotée d'une nervure centrale longitudinale en appui sur la carte électronique.
  • la station d'accueil comporte, en dehors de la nervure, un ou des espaces entre la station d'accueil et la carte électronique, de manière à permettre à d'autres composants d'être soudés à la carte électronique, sous la station d'accueil.
According to the different embodiments of the invention, which may be taken together or separately:
  • said means of mechanical and electrical connection of the electrodes to the distribution unit consist of switches positioned on the one hand in the housings and fixed on the other hand on an electronic current supply card belonging to the distribution unit: the docking station thus makes it possible to maintain these switches in position, so that the mechanical and electrical connection can take place in the best conditions.
  • each housing has a central orifice through which the switch protrudes, said orifice being dimensioned so as to hold the switch in position when it is fixed on the electronic card.
  • each switch has a first face for electrical connection to the electronic card, provided with at least one pin able to be soldered on the card, and a second face for electrical connection to the electrode, provided with a female end in which s inserts a male end of the electrode.
  • each electrode has a free end on which the male end is located, the male ends of the two electrodes relating to a heating element being staggered.
  • for each heating element, the docking station has two staggered housings according to the arrangement of the male ends of the two corresponding electrodes.
  • the male end of the electrode is inserted into the female end of the switch, said switch comprising at least one flexible blade capable of exerting pressure on the male end of the electrode so as to hold it in position and perform the electrical connection.
  • the male end of the electrode consists of a leg, said switch comprising a plurality of flexible blades exerting a support on either side of said leg.
  • each housing comprises means for guiding the electrode.
  • said guide means consist of two studs located on either side of the housing and whose facing faces are bevelled in the direction of the center of the housing so as to form guide ramps for the electrode.
  • said docking station consists of a bar extending over the entire length of the heating body, following the alignment of the electrodes.
  • the docking station comprises as many housings as there are electrodes present in the heating body, each housing accommodating an electrode.
  • said docking station has two rows of housings, the housings of one row being offset with respect to the housings of the other row.
  • said docking station is perforated between the adjacent housings.
  • the docking station is made of electrically insulating material, of the plastic type.
  • the docking station comprises a face facing the electronic card, said face being provided with a longitudinal central rib resting on the electronic card.
  • the docking station comprises, apart from the rib, one or more spaces between the docking station and the electronic board, so as to allow other components to be soldered to the electronic board, under the docking station 'welcome.

L'invention concerne aussi un boîtier de climatisation comprenant un dispositif de chauffage tel que décrit ci-dessus.The invention also relates to an air conditioning unit comprising a heating device as described above.

Et enfin, l'invention se rapporte à un procédé de raccordement mécanique et électrique d'électrode d'un dispositif de chauffage tel que décrit ci-dessus. En l'occurrence, ce procédé comprend les étapes suivantes :

  • positionner la station d'accueil en appui sur une carte électronique ;
  • insérer des commutateurs dans des orifices successifs prévus à cet effet dans la station d'accueil puis dans la carte électronique jusqu'à leur maintien en position ;
  • souder les commutateurs à la carte électronique ;
  • enficher simultanément toutes les électrodes du corps de chauffe dans les commutateurs correspondants en un unique mouvement de translation du corps de chauffe par rapport à l'unité de distribution.
And finally, the invention relates to a method of mechanical and electrical connection of the electrode of a heating device as described above. In this case, this method comprises the following steps:
  • positioning the docking station resting on an electronic card;
  • inserting switches into successive holes provided for this purpose in the docking station then in the electronic card until they are held in position;
  • solder the switches to the electronic board;
  • simultaneously insert all the electrodes of the heating body into the corresponding switches in a single translational movement of the heating body relative to the distribution unit.

Présentation des figuresPresentation of figures

L'invention sera mieux comprise, et d'autres buts, détails, caractéristiques et avantages de celle-ci apparaîtront plus clairement au cours de la description explicative détaillée qui va suivre, d'au moins un mode de réalisation de l'invention donné à titre d'exemple purement illustratif et non limitatif, en référence aux dessins schématiques annexés.The invention will be better understood, and other aims, details, characteristics and advantages thereof will appear more clearly during the detailed explanatory description which follows, of at least one embodiment of the invention given in By way of purely illustrative and non-limiting example, with reference to the appended schematic drawings.

Sur ces dessins :

  • la figure 1 illustre en perspective un dispositif de chauffage selon l'invention, avec un corps de chauffe et une unité de distribution,
  • la figure 2 est une vue agrandie de la figure 1 montrant plus particulièrement la jonction entre le corps de chauffe et l'unité de distribution,
  • la figure 3 reprend la figure 2, mais sans carte électronique,
  • la figure 4 est une vue agrandie de la figure 3, montrant la face inférieure de la station d'accueil selon l'invention,
  • la figure 5 montre en perspective la face supérieure de la station d'accueil selon l'invention, avec le raccordement des électrodes,
  • la figure 6 est une vue de dessus, en perspective, d'une partie de la station d'accueil,
  • la figure 7 est une vue de dessus de l'intégralité de la station d'accueil,
  • les figures 8 à 11 illustrent en détail un commutateur,
  • les figures 12 et 13 montrent, en perspective, le raccordement entre une électrode et un commutateur,
  • la figure 14 illustre, en perspective, une extrémité libre d'une électrode selon une configuration possible.
In these drawings:
  • there figure 1 illustrates in perspective a heating device according to the invention, with a heating body and a distribution unit,
  • there figure 2 is an enlarged view of the figure 1 showing more particularly the junction between the heating body and the distribution unit,
  • there picture 3 take it back figure 2 , but without an electronic card,
  • there figure 4 is an enlarged view of the picture 3 , showing the underside of the docking station according to the invention,
  • there figure 5 shows in perspective the upper face of the docking station according to the invention, with the connection of the electrodes,
  • there figure 6 is a top view, in perspective, of part of the docking station,
  • there figure 7 is a top view of the entire docking station,
  • THE figures 8 to 11 illustrate in detail a switch,
  • THE figures 12 and 13 show, in perspective, the connection between an electrode and a switch,
  • there figure 14 illustrates, in perspective, a free end of an electrode according to a possible configuration.

Description détailléedetailed description

En référence à la figure 1, l'invention concerne un dispositif de chauffage 1 électrique. Il s'agit, par exemple, d'un dispositif de chauffage 1, dit haute tension, c'est-à-dire destiné à être alimenté par un courant continu (DC) ou alternatif (AC) présentant une tension électrique supérieure à 60 V, notamment compris entre 60 et 1000 V, plus particulièrement compris entre 180 et 600 V, et/ou permettant de dégager une puissance de chauffe sur l'air ou une puissance électrique consommée supérieure à 2 kW, notamment comprise entre 2 kW et 10 kW.With reference to the figure 1 , the invention relates to an electric heating device 1 . It is, for example, a heating device 1, called high voltage, that is to say intended to be powered by a direct current (DC) or alternating current (AC) having an electrical voltage greater than 60 V, in particular between 60 and 1000 V, more particularly between 180 and 600 V, and/or making it possible to release a heating power on the air or an electrical power consumed greater than 2 kW, in particular between 2 kW and 10 kW.

Ledit dispositif de chauffage 1 comprend un corps de chauffe 2 alimenté en courant électrique pour chauffer un flux d'air traversant ledit corps de chauffe 2.Said heating device 1 comprises a heating body 2 supplied with electric current to heat a flow of air passing through said heating body 2.

Ledit corps de chauffe 2 présente ici une configuration sensiblement parallélépipédique, s'étendant en surface. Il est destiné à être positionné de façon transversale au flux d'air à réchauffer. Plus précisément, ledit flux d'air est destiné à être orienté perpendiculairement audit corps de chauffe 2 , c'est-à-dire perpendiculairement au plan de la figure 1.Said heating body 2 here has a substantially parallelepipedic configuration, extending at the surface. It is intended to be positioned transversely to the air flow to be heated. More specifically, said air flow is intended to be oriented perpendicular to said heating body 2, that is to say perpendicular to the plane of the figure 1 .

Le corps de chauffe 2 est formé par une succession de tubes 4 métalliques alignés. À l'intérieur de chaque tube 4, se trouvent des éléments de chauffe 8 parcourus par ledit courant. Les éléments de chauffe 8 sont, par exemple, des résistances à effet CTP (pour coefficient de température positif). Ces éléments de chauffe 8 sont particulièrement visibles en figure 13.The heating body 2 is formed by a succession of aligned metal tubes 4. Inside each tube 4 are heating elements 8 through which said current flows. The heating elements 8 are, for example, PTC effect resistors (for positive temperature coefficient). These heating elements 8 are particularly visible in figure 13 .

Des électrodes 9 sont situées de part et d'autre des éléments de chauffe 8 pour leur alimentation en courant électrique. Plus particulièrement, chaque élément de chauffe 8 est entouré d'une électrode 9 positive et d'une électrode 9 négative.Electrodes 9 are located on either side of heating elements 8 for supplying them with electric current. More particularly, each heating element 8 is surrounded by a positive electrode 9 and a negative electrode 9.

Afin d'isoler électriquement le tube 4 des électrodes 9 et des éléments de chauffe 8, des couches 12 de matières, électriquement isolantes et thermiquement conductrices, sont situées entre chaque électrode 9 est une paroi intérieure du tube 4.In order to electrically insulate the tube 4 from the electrodes 9 and the heating elements 8, layers 12 of electrically insulating and thermally conductive materials are located between each electrode 9 and an inner wall of the tube 4.

Chaque ensemble - tube 4 / éléments de chauffe 8 / électrodes 9 - forme ce qu'on appelle une unité de chauffe.Each set - tube 4 / heating elements 8 / electrodes 9 - forms what is called a heating unit.

Lesdites unités de chauffe sont alimentées sélectivement en courant. On entend par là que chaque unité de chauffe est alimentée en courant indépendamment des autres et peut donc être parcourue par un courant différent, notamment par son intensité, du courant parcourant les autres unités de chauffe. La valeur du courant en jeu ici est en particulier la valeur du courant moyen ou du courant efficace.Said heating units are selectively supplied with current. By this is meant that each heating unit is supplied with current independently of the others and can therefore be traversed by a different current, in particular by its intensity, from the current traversing the other heating units. The value of the current in play here is in particular the value of the average current or the effective current.

Pour en revenir à la figure 1, le corps de chauffe 2 peut comprendre des dissipateurs 13 thermiques, par exemple des ailettes, en relation de contact thermique avec les tubes 4. Les dissipateurs 13 sont positionnés, notamment, entre lesdits tubes 4. Dans un souci de clarté, seuls certains dissipateurs 13 s'étendant des tubes 4 d'extrémité ont été représentés, afin de ne pas surcharger la figure 1.To come back to the figure 1 , the heating body 2 may comprise heat sinks 13, for example fins, in thermal contact relationship with the tubes 4. The heat sinks 13 are positioned, in particular, between said tubes 4. For the sake of clarity, only certain heat sinks 13 extending from the end tubes 4 have been shown, so as not to overload the figure 1 .

Ledit corps de chauffe 2 comprend un cadre 5, notamment en matière plastique, accueillant lesdites unités de chauffe et servant au maintien desdits tubes 4. Les tubes 4 sont également maintenus en position au moyen de plaques intermédiaires 22.Said heating body 2 comprises a frame 5, in particular made of plastic material, accommodating said heating units and serving to hold said tubes 4. The tubes 4 are also held in position by means of intermediate plates 22.

Préférentiellement, le dispositif de chauffage 1 comprend en outre une unité de distribution 3 apte à commander le courant circulant dans ledit corps de chauffe 2.Preferably, the heating device 1 further comprises a distribution unit 3 capable of controlling the current flowing in said heating body 2.

Ladite unité de distribution 3 est avantageusement configurée pour piloter le courant alimentant le corps de chauffe 2, en particulier les différentes unités de chauffe, notamment à l'aide de commutateurs 15 pilotés, permettant de contrôler respectivement une circulation de courant dans chacune des unités de chauffe. Ces commutateurs 15 (visibles en figures 4) sont montés sur une carte électronique 11 en forme de T.Said distribution unit 3 is advantageously configured to control the current supplying the heating body 2, in particular the various heating units, in particular using controlled switches 15, making it possible to respectively control a flow of current in each of the heating units. heated. These switches 15 (visible in figure 4 ) are mounted on a T-shaped electronic card 11.

Sur la figure 2, on aperçoit la face inférieure de la carte électronique 11, avec une pluralité de broches 7 qui y sont soudées. Ces broches 7 appartiennent auxdits commutateurs 15.On the picture 2 , we see the underside of the electronic card 11, with a plurality of pins 7 which are welded thereto. These pins 7 belong to said switches 15.

Afin de pouvoir maintenir correctement en place les commutateurs 15 lors de leur fixation à la carte électronique 11, une station d'accueil 6 est prévue et située juste au-dessus de la face supérieure de la carte électronique 11. Cette station d'accueil 6 est notamment visible en figure 3 où la carte électronique 11 n'est pas représentée pour plus de clarté.In order to be able to correctly hold the switches 15 in place when they are attached to the electronic card 11, a docking station 6 is provided and located just above the upper face of the electronic card 11. This docking station 6 is particularly visible in picture 3 where the electronic card 11 is not shown for greater clarity.

Cette station d'accueil 6 est ainsi disposée au niveau de la jonction entre, d'une part le corps de chauffe 2 avec ses unités de chauffe, et d'autre part l'unité de distribution 3 avec sa carte électronique 11. La station d'accueil 6 consiste en une base intermédiaire facilitant le raccordement électrique et mécanique du corps de chauffe 2 à l'unité de distribution 3.This docking station 6 is thus arranged at the level of the junction between, on the one hand the heating body 2 with its heating units, and on the other hand the distribution unit 3 with its electronic card 11. The docking station 6 consists of an intermediate base facilitating the electrical and mechanical connection of the heating body 2 to the distribution unit 3.

Comme cela est visible en figure 4, cette station 6 accueille d'un côté les électrodes 9 dépassant des tubes 4, et d'un autre côté les commutateurs 15 aptes à être soudés à la carte électronique 11.As is visible in figure 4 , this station 6 accommodates on one side the electrodes 9 protruding from the tubes 4, and on the other side the switches 15 able to be soldered to the electronic card 11.

Plus précisément, la station d'accueil 6 comporte une face inférieure en vis-à-vis avec la carte électronique 11, et une face supérieure en vis-à-vis avec les tubes 4. La station d'accueil 6 consiste en une barre, ou une réglette, s'étendant sur toute la longueur du corps de chauffe 2, suivant l'alignement des électrodes 9 en sortie de tube 4.More precisely, the docking station 6 comprises a lower face facing the electronic card 11, and an upper face facing the tubes 4. The docking station 6 consists of a bar , or a strip, extending over the entire length of the heating body 2, following the alignment of the electrodes 9 at the outlet of the tube 4.

Cette face inférieure est dotée d'une nervure 23 centrale et orienté longitudinalement le long de la station d'accueil 6. Cette nervure 23 est apte à venir reposer sur la surface supérieure de la carte électronique 11, de manière à avoir un contact plan entre la station d'accueil 6 et la carte électronique 11. Ce contact plan permet premièrement de positionner la station d'accueil 6 au-dessus de la carte électronique 11 de façon stable. Par ailleurs la station d'accueil 6 permet d'augmenter la résistance mécanique de la carte électronique 11 selon deux principes :

  • en augmentant la rigidité globale de la carte électronique 11 grâce au plus grand moment d'inertie de l'ensemble carte électronique 11 /station d'accueil 6 ;
  • en agissant de plus comme une butée limitant la déformation, c'est-à-dire la flèche, de la carte électronique 11 en cas de vibration trop forte.
This lower face is provided with a central rib 23 and oriented longitudinally along the docking station 6. This rib 23 is capable of coming to rest on the upper surface of the electronic card 11, so as to have a plane contact between the docking station 6 and the electronic board 11. This plane contact firstly makes it possible to position the docking station 6 above the electronic board 11 in a stable manner. Furthermore, the docking station 6 makes it possible to increase the mechanical resistance of the electronic card 11 according to two principles:
  • by increasing the overall rigidity of the electronic card 11 thanks to the greater moment of inertia of the electronic card 11 / docking station 6 assembly;
  • by acting moreover as a stop limiting the deformation, that is to say the deflection, of the electronic card 11 in the event of excessive vibration.

De part et d'autre de la nervure 23, il existe donc un espace entre la station d'accueil 6 et la carte électronique 11. Idéalement et si nécessaire, cet espace est dimensionné de manière à pouvoir permettre à d'autres composants d'être soudés à la carte électronique 11, sous la station d'accueil 6.On either side of the rib 23, there is therefore a space between the docking station 6 and the electronic card 11. Ideally and if necessary, this space is sized so as to be able to allow other components to be soldered to the electronic card 11, under the docking station 6.

La face supérieure quant à elle, illustrée aux figures 5 à 7, comporte une pluralité de logements 17 accueillant les électrodes 9 et dans lesquels se trouvent des moyens de raccordement mécaniques et électrique des électrodes 9 à l'unité de distribution 3, correspondant aux commutateurs 15. En effet, à l'intérieur de chaque logement 17 se trouve un orifice central dans lequel est inséré un commutateur 15.As for the upper face, illustrated in figures 5 to 7 , comprises a plurality of housings 17 accommodating the electrodes 9 and in which there are mechanical and electrical connection means of the electrodes 9 to the distribution unit 3, corresponding to the switches 15. Indeed, inside each housing 17 there is a central hole in which is inserted a switch 15.

Ce commutateur 15 est plus particulièrement représenté aux figures 8 à 11. Il s'agit d'un commutateur 15 classique, avec une première face 19 de raccordement électrique à la carte électronique 11, dotée de deux broches 7 aptes être soudées sur la carte 11, et avec une seconde face 18 de raccordement électrique à l'électrode 9, dotée d'un embout femelle faisant office de raccord rapide. En effet, cet embout femelle comporte une pluralité de lames 20 flexibles aptes à exercer une pression sur l'électrode 9 qui y pénètre. En l'occurrence, il existe quatre lames 20 flexibles de part et d'autre de l'électrode 9 qui vienne s'appuyer sur elle. Le positionnement des lames 20 flexibles de part et d'eau de l'électrode 9 permet de centrer l'électrode 9 et de la maintenir en position centrée, contrairement à une configuration d'embout femelle où il n'y aurait que des lames 20 flexibles d'un côté de l'électrode 9. De plus, comme cela est particulièrement visible en figure 11, chaque lame 20 flexible à une forme en zigzag, permettant d'avoir plusieurs points d'appui 21 sur l'électrode 9. En particulier chaque pointe 21 de zigzag vient en appui sur l'électrode 9.This switch 15 is more particularly shown in figures 8 to 11 . This is a conventional switch 15, with a first face 19 for electrical connection to the electronic card 11, provided with two pins 7 capable of being soldered to the card 11, and with a second face 18 for electrical connection to the electrode 9, fitted with a female end acting as a quick coupling. Indeed, this female fitting comprises a plurality of blades 20 hoses capable of exerting pressure on the electrode 9 which penetrates therein. In this case, there are four flexible blades 20 on either side of the electrode 9 which comes to rest on it. The positioning of the flexible blades 20 on either side of the water of the electrode 9 makes it possible to center the electrode 9 and to maintain it in a centered position, unlike a configuration of female end piece where there would only be blades 20 flexible on one side of the electrode 9. Moreover, as is particularly visible in figure 11 , each flexible blade 20 has a zigzag shape, making it possible to have several support points 21 on the electrode 9. In particular, each zigzag point 21 comes to bear on the electrode 9.

En revenant à la figure 6, il est bien visible que, pour chaque logement 17, des plots 14 de guidage s'étendent de part et d'autre de l'orifice central en direction des tubes 4. Ces plots 14 ont pour objectif de guider l'électrode 9 jusqu'à son insertion dans le commutateur 15.Coming back to the figure 6 , it is clearly visible that, for each housing 17, guide studs 14 extend on either side of the central orifice in the direction of the tubes 4. The purpose of these studs 14 is to guide the electrode 9 to 'at its insertion in the switch 15.

Selon une configuration possible, pour chaque logement 17, les faces 14a des plots situées en vis-à-vis sont biseautées en direction de l'orifice central de manière à former des rampes de guidage de l'électrode 9 vers l'orifice central où se trouve le commutateur 15. Ces plots 14 dessinent ainsi un V à l'intérieur duquel s'insère l'électrode 9. Ce guidage des électrodes 9 permet d'améliorer l'assemblage entre le corps de chauffe 2 et l'unité de distribution 3.According to a possible configuration, for each housing 17, the faces 14a of the pads located opposite each other are bevelled in the direction of the central orifice so as to form guide ramps for the electrode 9 towards the central orifice where is the switch 15. These studs 14 thus draw a V inside which the electrode 9 is inserted. This guiding of the electrodes 9 makes it possible to improve the assembly between the heating body 2 and the distribution unit 3.

Les faces 14b des plots 14 situées en vis-à-vis entre deux logements 17 successifs sont quant à elles orientées perpendiculairement à la station d'accueil 6.The faces 14b of the studs 14 located face-to-face between two successive housings 17 are oriented perpendicular to the docking station 6.

De manière générale, la station d'accueil 6 comporte autant de logements 17 que d'électrodes 9 présentes dans le corps de chauffe 2, chaque logement 17 accueillant une électrode 9.In general, the docking station 6 comprises as many housings 17 as there are electrodes 9 present in the heating body 2, each housing 17 receiving an electrode 9.

Plus précisément, les électrodes 9 comportent chacune une extrémité libre dépassant des tubes 4. Chaque extrémité libre comporte un embout mâle 10 apte à rentrer dans l'embout femelle du commutateur 15. Cet embout mâle 10 peut être formé d'une pièce avec l'électrode 9, ou peut consister en une pièce séparée montée sur l'électrode 9, comme cela est le cas dans l'exemple visible aux figures 13 et 14. Dans ce cas, l'embout mâle 10 correspond à une patte dont une première extrémité 10a est montée et rivetée sur l'électrode 9 par exemple et dont la deuxième extrémité 10b rentre dans l'embout femelle du commutateur 15.More specifically, the electrodes 9 each have a free end protruding from the tubes 4. Each free end has a male end piece 10 capable of entering the female end piece of the switch 15. This male end piece 10 can be formed in one piece with the electrode 9, or may consist of a separate part mounted on the electrode 9, as is the case in the example visible in figures 13 and 14 . In this case, the male end 10 corresponds to a lug whose first end 10a is mounted and riveted on the electrode 9 for example and whose second end 10b enters the female end of the switch 15.

Pour chaque unité de chauffe, les embouts mâles 10 des deux électrodes 9 s'étendent dans la direction axiale du tube 4 mais avec un décalage transversal. Les embouts mâles 10 sont ainsi localisés en quinconce.For each heating unit, the male ends 10 of the two electrodes 9 extend in the axial direction of the tube 4 but with a transverse offset. The male ends 10 are thus located in staggered rows.

Par conséquent, pour chaque tube 4, la station d'accueil 6 présente deux logements 17 en quinconce selon la disposition des embouts mâles 10 des deux électrodes 9 correspondantes, l'une positive et l'autre négative. De cette manière, les commutateurs 15 insérés dans ces logements 17 sont mis à distance l'un de l'autre, car il est important de respecter une distance d'isolement entre les commutateurs 15 appartenant à la ligne de courant positif et les commutateurs 15 appartenant à la ligne de courant négatif.Consequently, for each tube 4, the docking station 6 has two staggered housings 17 according to the arrangement of the male ends 10 of the two electrodes 9 corresponding, one positive and the other negative. In this way, the switches 15 inserted in these housings 17 are placed at a distance from each other, because it is important to respect an isolation distance between the switches 15 belonging to the positive current line and the switches 15 belonging to the negative current line.

Ainsi, comme représenté en figure 7, la station d'accueil 6 présente deux rangées 6a,6b de logements 17, les logements 17 d'une rangée 6a étant décalés par rapport aux logements 17 de l'autre rangée 6b. L'une des rangées de logements 17 se situe sur une ligne de courant positif à laquelle sont raccordées les électrodes 9 positives et l'autre rangée se situe sur une ligne de courant négatif à laquelle sont raccordées les électrodes 9 négatives.So, as shown in figure 7 , the docking station 6 has two rows 6a, 6b of housings 17, the housings 17 of a row 6a being offset with respect to the housings 17 of the other row 6b. One of the rows of housings 17 is located on a positive current line to which the positive electrodes 9 are connected and the other row is located on a negative current line to which the negative electrodes 9 are connected.

La station d'accueil 6 est ajourée entre les logements 17 adjacents, via des fenêtres 16. Cela permet l'utilisation d'un minimum de matière et l'obtention d'une barre légère.The docking station 6 is perforated between the adjacent housings 17, via windows 16. This allows the use of a minimum of material and the obtaining of a light bar.

La station d'accueil 6 est conçue dans une matière isolante électriquement du type plastique. Une telle matière permet également une bonne résistance à la température, à l'ininflammabilité et à l'humidité.The docking station 6 is designed in an electrically insulating material of the plastic type. Such a material also provides good resistance to temperature, non-flammability and humidity.

La station d'accueil 6 est obtenue par moulage ou par injection plastique.The docking station 6 is obtained by molding or by plastic injection.

De façon concrète le raccordement entre le corps de chauffe 2 et l'unité de distribution 3 s'effectue de la manière suivante.Concretely, the connection between the heating body 2 and the distribution unit 3 takes place as follows.

La station d'accueil 6 est positionnée sur la carte électronique 11, de manière à ce que sa nervure 23 vienne en appui sur la surface supérieure de la carte 11. Lorsque la station d'accueil 6 et la carte 11 sont correctement positionnées l'une par rapport à l'autre, on introduit les commutateurs 15 dans les logements 17 prévus à cet effet, et plus précisément dans les orifices des logements 17. Les broches 7 des commutateurs 15 s'introduisent ensuite dans des petits trous prévus à cet effet dans la carte électronique 11. Les commutateurs 15 se retrouvent alors en position stable dans les logements 17 de la station d'accueil 6, et il possible de souder les broches 7 à la carte électronique 11.The docking station 6 is positioned on the electronic card 11, so that its rib 23 comes to rest on the upper surface of the card 11. When the docking station 6 and the card 11 are correctly positioned the relative to the other, the switches 15 are introduced into the housings 17 provided for this purpose, and more precisely into the holes of the housings 17. The pins 7 of the switches 15 are then introduced into the small holes provided for this purpose in the electronic card 11. The switches 15 then find themselves in a stable position in the housings 17 of the docking station 6, and it is possible to solder the pins 7 to the electronic card 11.

La dernière étape consiste ensuite à insérer les embouts mâles 10 des électrodes 9 dans les commutateurs 15 de la station d'accueil 6. Cette dernière étape peut être réalisée en un seul geste, via une translation rectiligne du corps de chauffe 2 par rapport à la station d'accueil 6, étant donné qu'un commutateur 15 est prévu en vis-à-vis de chaque embout mâle 10.The last step then consists of inserting the male ends 10 of the electrodes 9 into the switches 15 of the docking station 6. This last step can be carried out in a single gesture, via a rectilinear translation of the heating body 2 with respect to the docking station 6, since a switch 15 is provided opposite each male end 10.

Cet unique mouvement est notamment permis grâce au guidage des embouts mâles 10 via les plots 14 de guidage et grâce au raccord rapide prévu sur la première face 18 de raccordement du commutateur 15. En effet, il suffit de glisser l'embout mâle 10 dans la première face 18 de raccordement du commutateur 15 et les lames 20 flexibles viennent réaliser la connexion électrique ainsi que le raccordement mécanique de l'embout mâle 10 car elles exercent une pression sur lui de manière à le maintenir en position.This single movement is in particular permitted thanks to the guiding of the male ends 10 via the guide studs 14 and thanks to the quick coupling provided on the first connection face 18 of the switch 15. Indeed, it suffices to slide the male end 10 into the first connection face 18 of the switch 15 and the flexible strips 20 provide the electrical connection as well as the mechanical connection of the male end 10 because they exert pressure on it so as to hold it in position.

Avec un tel raccordement, les mouvements de la carte électronique 11 sont très limités, ce qui permet d'éviter les problèmes vibratoires, et d'améliorer la fiabilité de la carte électronique 11, et du dispositif de chauffage 1 de manière générale.With such a connection, the movements of the electronic card 11 are very limited, which makes it possible to avoid vibration problems, and to improve the reliability of the electronic card 11, and of the heating device 1 in general.

L'invention concerne encore un boîtier de climatisation comprenant un dispositif de chauffage 1 tel que décrit plus haut. Ledit boîtier de climatisation comprend un corps de circulation du flux d'air à l'intérieur duquel ledit dispositif de chauffage 1 est situé.The invention also relates to an air conditioning unit comprising a heating device 1 as described above. Said air conditioning unit comprises an air flow circulation body inside which said heating device 1 is located.

En ce qui concerne la description ci-dessus, les relations dimensionnelles optimales pour les parties de l'invention, en incluant les variations de taille, de matériaux, de formes, de fonction et de modes de fonctionnement, d'assemblage et d'utilisation, sont considérées comme apparentes et évidentes pour l'homme du métier, et toutes les relations équivalentes à ce qui est illustré dans les dessins et ce qui est décrit dans le mémoire sont censées être incluses dans la présente invention.With respect to the above description, the optimum dimensional relationships for the parts of the invention, including variations in size, materials, shapes, function and modes of operation, assembly and use , are considered to be apparent and obvious to those skilled in the art, and all equivalent relationships to what is illustrated in the drawings and what is described in the specification are intended to be included in the present invention.

Claims (15)

  1. Heating device (1) for an air-conditioning unit, said heating device (1) comprising a heating body (2) supplied with current via a distribution unit (3) in order to heat an airflow passing through said heating body (2), the heating body (2) comprising an alignment of tubes (4) containing:
    - heating elements (8) flowed through by said current;
    - electrodes (9) located on either side of the heating elements (8) for their supply of electric current;
    said distribution unit (3) comprising a docking station (6) for the electrodes (9), said docking station (6) having a plurality of receptacles (17) accommodating the electrodes (9) and in which there are means for mechanically and electrically connecting the electrodes (9) to the distribution unit (3), said means for mechanically and electrically connecting the electrodes (9) to the distribution unit (3) consisting of switches (15) that are positioned in the receptacles (17), on the one hand, characterized in that said switches are fixed to an electronic current supply board (11) belonging to the distribution unit (3), on the other hand, and the docking station (6) comprises a lower face facing the electronic circuit board (11) and an upper face facing the tubes (4).
  2. Heating device (1) according to Claim 1, characterized in that each receptacle (17) has a central orifice through which the switch projects, said orifice being dimensioned so as to keep the switch (15) in position when it is fixed to the electronic board (11).
  3. Heating device (1) according to the preceding claim, characterized in that each switch (15) has a first electrical connection face (19) for connection to the electronic board (11), provided with at least one pin (7) able to be soldered to the board (11), and a second electrical connection face (18) for connection to the electrode (9), provided with a female coupling into which a male coupling (10) of the electrode (9) is inserted.
  4. Heating device (1) according to the preceding claim, characterized in that each electrode (9) has a free end on which the male coupling (10) is located, the male couplings (10) of the two electrodes (9) relating to a heating element (8) being arranged in a quincunx.
  5. Heating device (1) according to the preceding claim, characterized in that, for each heating element (8), the docking station (6) has two receptacles (17) in a quincunx matching the arrangement of the male couplings (10) of the two corresponding electrodes (9).
  6. Heating device (1) according to one of Claims 3 to 5, characterized in that the male coupling (10) of the electrode (9) is inserted into the female coupling of the switch (15), said switch (15) having at least one flexible blade (20) able to exert a pressure on the male coupling (10) of the electrode (9) so as to keep it in position and create the electrical connection.
  7. Heating device (1) according to one of the preceding claims, characterized in that each receptacle (17) has guide means for guiding the electrode (9).
  8. Heating device (1) according to the preceding claim, characterized in that said guide means consist of two studs (14) that are located on either side of the receptacle (17) and whose opposing faces (14a) are bevelled towards the centre of the receptacle (17) so as to form guide ramps for the electrode (9).
  9. Heating device (1) according to one of the preceding claims, characterized in that said docking station (6) consists of a bar extending over the entire length of the heating body (2), following the alignment of the electrodes (9).
  10. Heating device (1) according to one of the preceding claims, characterized in that the docking station (6) has as many receptacles (17) as there are electrodes (9) in the heating body (2), each receptacle (17) accommodating an electrode (9).
  11. Heating device (1) according to one of the preceding claims, characterized in that said docking station (6) has two rows (6a, 6b) of receptacles (17), the receptacles (17) of one row (6a) being offset from the receptacles (17) of the other row (6b).
  12. Heating device (1) according to one of the preceding claims, characterized in that the docking station (6) has a face facing the electronic board (11), said face being provided with a longitudinal central rib (23) bearing on the electronic board (11).
  13. Heating device (1) according to one of the preceding claims, characterized in that the docking station (6) has, in addition to the rib (23), one or more spaces between the docking station (6) and the electronic board (11), so as to allow other components to be soldered to the electronic board (11), underneath the docking station (6) .
  14. Air-conditioning unit comprising a heating device (1) according to any one of the preceding claims.
  15. Method for mechanically and electrically connecting electrodes (9) of a heating device (1) as described in any one of Claims 1 to 13, characterized in that it comprises the following steps:
    - positioning the docking station (6) so as to bear on an electronic board (11);
    - inserting switches (15) into successive orifices provided for this purpose in the docking station (6), and then into the electronic board (11) until they are held in position;
    - soldering the switches (15) to the electronic board (11);
    - simultaneously threading all of the electrodes (9) of the heating body (2) into the corresponding switches (15) in a single translational movement of the heating body (2) with respect to the distribution unit (3).
EP18839826.7A 2017-12-19 2018-12-13 Electric heating device with electrode housing station Active EP3728962B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1762533A FR3075554B1 (en) 2017-12-19 2017-12-19 ELECTRIC HEATER WITH ELECTRODE DOCKING STATION
PCT/FR2018/053250 WO2019122616A1 (en) 2017-12-19 2018-12-13 Electric heating device with electrode housing station

Publications (2)

Publication Number Publication Date
EP3728962A1 EP3728962A1 (en) 2020-10-28
EP3728962B1 true EP3728962B1 (en) 2023-08-16

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US (1) US12092367B2 (en)
EP (1) EP3728962B1 (en)
JP (1) JP6999815B2 (en)
CN (1) CN111742183B (en)
FR (1) FR3075554B1 (en)
WO (1) WO2019122616A1 (en)

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CN110631259A (en) * 2019-10-23 2019-12-31 沈阳汇智源电力工程技术服务有限公司 Electrode type hot water boiler

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Publication number Publication date
US12092367B2 (en) 2024-09-17
JP6999815B2 (en) 2022-02-10
EP3728962A1 (en) 2020-10-28
WO2019122616A1 (en) 2019-06-27
CN111742183A (en) 2020-10-02
US20200309410A1 (en) 2020-10-01
CN111742183B (en) 2022-05-17
JP2021507197A (en) 2021-02-22
FR3075554B1 (en) 2022-05-20
FR3075554A1 (en) 2019-06-21

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