WO2016128399A1 - Electric heating device - Google Patents

Electric heating device Download PDF

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Publication number
WO2016128399A1
WO2016128399A1 PCT/EP2016/052726 EP2016052726W WO2016128399A1 WO 2016128399 A1 WO2016128399 A1 WO 2016128399A1 EP 2016052726 W EP2016052726 W EP 2016052726W WO 2016128399 A1 WO2016128399 A1 WO 2016128399A1
Authority
WO
WIPO (PCT)
Prior art keywords
heating
housing
connection interface
free end
connection
Prior art date
Application number
PCT/EP2016/052726
Other languages
French (fr)
Inventor
Frédéric PIERRON
Serif KARAASLAN
Philippe KERG
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 WO2016128399A1 publication Critical patent/WO2016128399A1/en

Links

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
    • 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
    • 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
    • F24H3/0452—Frame constructions
    • F24H3/0458—One-piece frames
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/022—Heaters specially adapted for heating gaseous material
    • H05B2203/023—Heaters of the type used for electrically heating the air blown in a vehicle compartment by the vehicle heating system

Definitions

  • the invention relates to the field of ventilation, heating and / or air conditioning of a motor vehicle. It relates to additional heating devices intended to be mounted in a ventilation system, heating and / or air conditioning of a motor vehicle.
  • the invention relates to an additional heating device comprising heating elements with electrical resistances, for example positive temperature coefficient (PTC) resistors, which make it possible to produce heat rapidly in the vehicles, especially when wants to quickly warm up the cabin.
  • PTC positive temperature coefficient
  • Electric additional heating devices of this type are known for heating a flow of air passing through a duct of a ventilation, heating and / or air conditioning system of a motor vehicle, in which a housing is suitable. to carry heating modules by heat diffusion under the effect of an electrical potential, said housing comprising a heating compartment for receiving at least one longitudinally extending heating module and a first connection interface extending transversely to the heating compartment.
  • the first connection interface carries tabs which extend from the first interface to the heating modules, inside the heating compartment, to ensure electrical contact with the terminations formed by the free ends of the electrodes of the heating modules.
  • the subject of the invention is an additional electrical heating device for heating a flow of air passing through a duct of a ventilation, heating and / or air-conditioning system of a motor vehicle, in which a housing is suitable. to wear heating modules by diffusion of heat under the effect of an electric potential.
  • the housing comprises at least one heating compartment for receiving at least one longitudinally extending heating module and a first connection interface which allows the connection of the at least one heating module to a source power source of the vehicle, each heating module being extended longitudinally by an electrode free end adapted to be connected to said electrical source in the vicinity of said first connection interface.
  • the first connection interface has at least one receiving housing of a fixing means, secured to a heating module, said fixing means comprising a detent element with elastic deformation able to assume a position. retracted when inserting the free end of the electrode into the first connection interface and a position deployed in said housing when the heating module is in position relative to the first connection interface.
  • the fixing means is attached to the free end of the electrode and the receiving housing of the fixing means opens into an insertion slot of this free end of the electrode in the first connection interface.
  • the housing it is advantageous for the housing to be hollowed out in the thickness of the first connection interface so that a wall of this interface forms a wall of the housing making stop at the release of the detent element when the latter is in the deployed position in the housing.
  • the additional electrical heating device according to the invention may further comprise one or more of the following characteristics, alone or in combination:
  • the fixing means is formed by a free end portion of an electrical connection terminal which is directly connected to the free end of an electrode;
  • the first connection interface extends transversely to the heating compartment.
  • electrical connection terminal comprises a fixing portion, such as a base, adapted to overlap the free end of the electrode, and a tab forming a free end portion of the electrical connection terminal adapted to be inserted into an insertion slot of the first connection interface;
  • the fixing portion, such as a base, of the terminal is secured to the free end of the electrode, for example by crimping, by clinching or gluing;
  • the tongue has a section of rectangular shape, complementary to the rectangular shape of the section of the corresponding insertion slot made in the first connection interface;
  • the detent element is carried by the tongue in the form of an elastic deformation blade whose free end extends in a rest position, projecting from the main plane defined by the tongue, the free end of the blade being positioned behind its end integral with the tongue, that is to say closer to the fixing portion, such as a base, the terminal;
  • the electrical connection terminal passes through the first connection interface, the insertion slot made in the first interface for this purpose opening on one and the other of the faces of the first interface perpendicular to the heating module.
  • the housing comprises a heating compartment carrying the heating modules and two connection interfaces arranged at the longitudinal ends of said heating compartment, and the housing is formed of a single piece.
  • the heating modules are inserted into the heating compartment via an access opening made in the second connection interface disposed opposite the first connection interface able to be traversed by at least one connection terminal and comprising the at least one connection terminal.
  • a housing for receiving said detent element A particularly advantageous configuration is thus presented in which the insertion of the heating modules into the heating compartment and the insertion of the electrical connection terminals into the corresponding slots is done with a single translational movement. The proper insertion of the electrical terminal in the slot, which conditions the good connection of the heating modules to the vehicle's electrical source and therefore the proper operation of the heating device, is thus facilitated.
  • the heating device may furthermore comprise one or more of the following characteristics, alone or in combination: the electrical connection terminal comprises a fixing part, able to cooperate with the free end of the electrode, and a tongue forming the free end portion of the terminal adapted to pass through the first connection interface in the insertion slot; the tongue is able to pass through the first plate of the first connection interface in the insertion slot;
  • the terminal comprises a base adapted to overlap the free end of the electrode;
  • the tongue has a section of rectangular shape, complementary to the rectangular shape of the section of the corresponding insertion slot made in the first connection interface, the insertion slot being preferably made in the first plate;
  • the free end of the tongue has at least one bevel, to form a pointed portion at the end of the electrode and facilitate the insertion of the terminal into the corresponding slot;
  • the electrical connection terminal may comprise fins which extend at the junction of the fixing portion and the end portion of the terminal, and projecting perpendicular to the longitudinal direction, so as to form a stop end. race against the inner face of the first connection interface.
  • the electrical connection terminal comprises an elastically deformable snap-in element able to take a retracted position when the terminal is inserted into the slot and a position deployed in a housing made adjacent to said slot when the terminal is in the connection position.
  • the heating modules can extend longitudinally. between the connection interfaces so that the distal end of the heating modules is disposed longitudinally substantially opposite this second connection interface. It is right to note that according to the invention, the method of connection by insertion of the terminals in the first connection interface makes it possible to dispense with the springs usually placed at the bottom of the heating compartment opposite the first connection interface for pressing the heating modules against the connection tabs.
  • connection terminals and their possible locking in position by snap-in elements carried directly by the terminals, is sufficient, so that a longitudinal space saving is achieved, which is advantageously used according to the invention to enlarge the longitudinal dimension of the heating modules and the efficiency of the heating device.
  • the housing comprises a heating compartment carrying heating modules and two connection interfaces arranged at the longitudinal ends of said heating compartment, said housing being formed of a single piece.
  • the heating modules are inserted into the heating compartment by an access made in the second connection interface, arranged opposite the first connection interface adapted to be traversed by at least one connection terminal.
  • a particularly advantageous configuration is thus presented in which the insertion of the heating modules into the heating compartment and the insertion of the electrical connection terminals into the corresponding slots is done with a single translational movement.
  • the proper insertion of the electrical terminal in the slot which conditions the good connection of the heating modules to the vehicle's electrical source and therefore the proper operation of the heating device, is thus facilitated.
  • the housing of the electric airflow heating device according to the invention may further comprise one or more of the following characteristics, alone or in combination:
  • the at least one heating module extends, when it is arranged in the heating compartment, in a direction of general extension between a first end and a second end; the direction of general extension of said at least one heating module is substantially longitudinal;
  • the heating compartment extends in a direction of general extension between a first and a second end; the general extension direction of the heating compartment is substantially longitudinal;
  • the heating compartment for receiving the heating block has substantially the shape of a parallelepiped
  • At least a portion of at least one side of the heating compartment is recessed or openwork
  • the heating compartment comprises two parallel lateral sides extending in the general direction of extension of the heating compartment and two parallel main sides extending in the general direction of extension of the heating compartment; these two lateral sides are materialized by walls;
  • the two lateral sides of the heating compartment are substantially facing one another;
  • the two main sides of the heating compartment are substantially facing one another; the lateral sides extend substantially perpendicularly to the main sides;
  • each of the main sides comprises at least one transverse upright connecting said lateral sides;
  • Each of the main sides comprises at least two transverse amounts distant from each other and preferably parallel; each of the ends of a transverse upright is connected to a lateral side of the heating compartment;
  • connection interfaces are respectively disposed at opposite ends of the heating compartment, these opposite ends being preferably said first and said second end between which said heating compartment in the direction of general extension;
  • the heating modules comprise at least one element capable of producing heat and at least one associated element able to exchange heat with the flow of air passing through the heating block; said at least one element capable of producing heat is a resistive element;
  • said at least one element capable of producing heat is a positive temperature coefficient (PTC) type resistive element
  • said at least one element capable of generating heat is a positive temperature coefficient (PTC) resistive element disposed in or on a support such as a bar;
  • PTC positive temperature coefficient
  • said at least one element capable of producing heat is a resistive element placed between two electrodes;
  • said at least one associated element which is capable of exchanging heat is a radiant element or a heat sink; said at least one heat-exchanging associated element is at least one fin traversed by at least one element capable of producing heat, or interleaves such as pleated or corrugated metal ribbons arranged between elements capable of producing heat ;
  • said at least one element capable of generating heat is disposed between two elements able to exchange heat;
  • the at least one heating module comprises an element capable of producing heat disposed between two elements capable of exchanging heat;
  • the at least one heating module comprises two elements capable of producing heat and three elements capable of exchanging heat, a heat exchangeable element being disposed between two elements capable of producing heat, each of these elements heat generating means being disposed between the central heat exchangeable element and an external heat exchangeable element.
  • At least one lateral side of the heating compartment may comprise at least one resiliently deformable snap-on finger allowing the retention of a respective heating module.
  • This detent finger is preferably disposed near the second connection interface.
  • the heating compartment comprises at least one intermediate wall extending inside the housing in which at least one heating module can be installed.
  • the housing of the electric airflow heating device according to the invention may furthermore comprise one or more of the following characteristics, alone or in combination, in relation to said intermediate wall: said at least one intermediate wall is arranged substantially parallel to said lateral sides of the heating compartment, and between these lateral sides extending in the general extension direction of the heating compartment;
  • said at least one intermediate wall extends in a direction of general extension between a first end and a second end; said at least one intermediate wall is substantially longitudinal;
  • said at least one intermediate wall extends over the entire length of the heating compartment, from one connection interface to the other; said at least one intermediate wall comprises at least one orifice;
  • At least a portion of said at least one intermediate wall has the properties of an elastic return blade; said at least one intermediate wall makes it possible to subdivide the main housing of the heating compartment into two sub-parts, each of which makes it possible to receive at least one heating module; a first sub-part, or first housing, is delimited by an inner face of a lateral side of the heating compartment and the intermediate wall and a second sub-part, or second housing, is delimited by an inner face of the opposite lateral side and the intermediate wall;
  • the intermediate wall is off-center to be closer to one of said lateral sides of the heating compartment, the means for creating a pressure drop is integral with this side; the intermediate wall comprises at least one detent finger;
  • the first housing is sized to receive a heating module comprising an element capable of producing heat disposed between two elements able to exchange heat;
  • the second housing is sized to receive a heating module comprising two elements capable of producing heat and three elements able to exchange heat.
  • the housing of an electric heating device comprises at least one means for creating a pressure drop of the air flow circulating in the location in which said housing is installed.
  • the creation of this pressure drop advantageously makes it possible to accentuate the heat exchange between the electric heating device and the said air flow.
  • This means for creating a pressure drop can have, in particular but not exclusively, the shape of a blade, a bar, a profile, a plate.
  • the invention also relates to a ventilation, heating and / or air conditioning installation comprising a heating device as just presented.
  • FIG. 1 is a side view of an additional heating device adapted to be housed according to the invention across an air duct of a set of heating-ventilation and air conditioning;
  • FIG. 2 is a perspective view, rear three-quarters of the device of Figure 1, wherein the heating modules have been removed to make particularly visible the constituent walls of the heating compartment of these heating modules;
  • FIG. 3 is a perspective view, three quarter front, of the device of FIG. 1, making the free ends of electrical terminals opening out through a first connection interface particularly visible;
  • FIG. 4 is a perspective view, three quarter rear view, of the heating modules able to be housed in the heating compartment of the heating device according to the invention, provided respectively with electrical terminals, each attached to an electrode tongue extending projecting the heating modules;
  • FIG. 5 is a view of the elements illustrated in FIG. 4, this time in perspective of three quarter front;
  • - Figure 6 is a view, in the same perspective as that of Figure 5, a heating module and the associated electrical terminal in the mounted position and a heating module and the associated electrical terminal in disassembled position;
  • FIG. 7 is a perspective representation of an electrical terminal according to the same perspective as that of FIG. 4;
  • FIG. 8 is a detailed view of the first connection interface illustrated in FIG. 3, without the electrical terminals;
  • FIG. 9 is a sectional view of an electrical terminal and of the first connection interface in the assembled position illustrated in FIG. 3.
  • FIGS. 1 to 3 show an additional heating device according to the invention, which is suitable for being housed across an air circulation duct of a ventilation, heating and / or air conditioning system, in order to transform the electrical energy taken from the vehicle into thermal energy restored in the air passing through said ventilation, heating and / or air conditioning system.
  • the installation is not shown here, but it will be understood that a main conduit of this installation conventionally comprises an opening made in the wall for the insertion of the additional heating device.
  • the additional heating device 2 comprises a housing and heating modules 4 capable of transforming an electric current into thermal energy.
  • the heating modules 4 capable of transforming an electric current into thermal energy.
  • the housing of the additional heating device 2 is formed by a one-piece housing comprising a heating compartment 6 for receiving the heating modules 4, a first connection interface 8 disposed at a proximal end 10 of the heating compartment 6 for the connection of the device to an electrical network of the vehicle and the supply of the heating modules 4, a second interface 12, in particular of mechanical fixing, which is disposed at the distal end 14 of the heating compartment 6 opposite the proximal end bearing the first connection interface 8 and which is adapted to cooperate with a duct wall of the ventilation system, heating and / or air conditioning, and a bar 1 6 which extends along the heating compartment 6 between the two connection interfaces 8, 12.
  • the additional heating device 2 is made of a plastic material, for example polypropylene or polyol mide, loaded with fiberglass. It is considered that the heating compartment 6 and the two connection interfaces 8, 12 are monoblock as soon as their separation causes destruction of the heating compartment 6 or one and / or the other of the interfaces 8, 12. Here it is understood that the heating compartment 6 and the two interfaces 8, 12 come from one and the same molding operation. However, the heating compartment 6 and the connection interfaces 8, 12 could be made independently of each other and then secured, without departing from the context of the invention.
  • the heating compartment 6 has a rectangular parallelepiped shape whose two main faces are perforated to allow diffusion in the duct of the heat released by the heating modules 4 housed inside the heating compartment 6.
  • the heating compartment 6 comprises in addition to these uprights 18, three longitudinal walls, parallel to each other and among which are distinguished two side walls 20, 22 and an intermediate wall 24 disposed between these side walls 20, 22.
  • the uprights 18 extend perpendicularly the two side walls 20, 22 from a respective transverse edge to connect the side walls 20, 22 therebetween.
  • a first housing 26 is defined by the so-called upper lateral wall 20, the uprights 18 and the intermediate wall 24, while a second housing 28 is defined by the so-called lower side wall 22, the uprights 8 and the intermediate wall 24.
  • the first housing 26 has a height in the vertical direction smaller than that of the second housing 28 , and that the first housing 26 is sized to receive a first heating module 30 formed of two heat sinks 29, while the second housing 28 is sized to receive a second heating module 32 formed of three heat sinks 29.
  • the intermediate wall 24 has guide flanges 34 which extend in vertical projection, partially along the intermediate wall 24, on each transverse side thereof, to facilitate the translational guidance of the heating modules 30, 32 in the housings 26, 28 defined in the heating compartment 6, during the sliding insertion thereof. It is understood that the side walls 20, 22 advantageously comprise equivalent guide edges.
  • the intermediate wall 24 further comprises an elastically deformable blade 36, made in particular by partial punching of a portion of the wall, so that it is articulated to the intermediate wall 24 at a first longitudinal end and has opposite a free end which extends, in the rest position of the blade 36, projecting from the plane defined by the intermediate wall 24, in the second housing 28.
  • the blade 36 is shaped so that this free end is recalled by spring in this projecting position in the second housing 28.
  • the free end has a boss 38 projecting from the plane of the blade 36 in the direction of the approximation of the plane of the intermediate wall 24, so that when the blade 36 is constrained to be in the plane defined by the intermediate wall 24, the boss 38 is located in the first housing 26.
  • the side walls 20 and 22 may comprise an elastically deformable blade which extends in one or other of the housing 26, 28 to perform the same function of holding the heating modules 30, 32 in the housing.
  • FIG. 3 shows snap-fastening fingers 40, which are elastically deformed, which are produced at the distal ends 42, that is to say the ends facing the second connection interface 12, of the side walls 20, 22 and the intermediate wall 24.
  • Each latching finger 40 is made to extend in vertical projection from the wall that it extends, the fingers 40 carried by the side walls 20 and 22 projecting towards the intermediate wall 24 while this intermediate wall 24 has a finger detent 40 extending vertically as well to the upper side wall 20 as to the lower side wall 22.
  • the detent finger 40 has an outer face 44, facing the second connection interface 12, which is inclined relative to vertically and an inner face, turned towards the inside of the heating compartment 6, which is substantially straight to form a clearance stop for the heating modules 30, 32 when they are inserted into the heating compartment 6 of the device. It is understood that such shapes of the fingers facilitate the spacing of the fingers 40 during the passage of the heating modules 30, 32 to the inside of the heating compartment 6 and they block these heating modules 30, 32 inside the when in position.
  • the heating compartment 6 is integral with the first connection interface 8, which has a dual function, namely an electrical connection function to allow the connection of the heating modules to a power source. electrical energy and a mechanical function for sealing the opening of the duct of the ventilation, heating and / or air conditioning system by which the heating device is inserted.
  • the first connection interface 8 comprises a first substantially flat plate 46, which extends perpendicularly to the walls of the heating compartment 6, and a sleeve 48 which extends longitudinally projecting from the first plate 46, opposite the compartment heating element 6 of the heating compartment 2.
  • the mechanical fixing means associated with the first connection interface 8 are carried by the first plate 46 which has at its vertical ends 50 fixing lugs 52 (visible in FIG. 2) in which fixing holes 54 allow the cooperation of screwing means with tapped means, not shown here, integral with the duct of the ventilation system, heating and / or air conditioning, for the mechanical fixing of the additional heating device 2 relative to the duct.
  • fixing lugs 52 visible in FIG. 2
  • fixing holes 54 allow the cooperation of screwing means with tapped means, not shown here, integral with the duct of the ventilation system, heating and / or air conditioning, for the mechanical fixing of the additional heating device 2 relative to the duct.
  • first plate 46 has on its inner face 56, facing the heating compartment 6 of the heating compartment 6, a peripheral groove 58 (visible in Figure 2) in which a seal can be positioned to ensure the l airtightness between the inside of the air conditioning installation where extends the heating compartment 6 of the device and the outside of the installation where extends the first plate 46 and in particular the sleeve 48.
  • first interface 8 has slots 60 (visible in Figure 2) which extend from the inner face 56 of the first plate 46, facing the heating compartment 6, the outer face 62 carrying the sleeve 48.
  • the slots 60 open into the sleeve 48, the dimensions of which are capable of allowing reception in this sleeve 48 of source electrical connection means, that is to say means directly connected to the network of the vehicle.
  • FIG. 3 shows the free end of electrical connection terminals 64, opening slots inside the sleeve 48, which are able to cooperate with the source electrical connection means when they are fitted into the sheath. 48.
  • the electrical connection terminals 64 are, according to the invention, made integral with the electrodes 66 of the heating modules 4, as will be described hereinafter, and they pass through the slots 60 (visible in FIG. allow to connect, with connecting means arranged on one side of the first connection interface 8, the heating modules 4 disposed on the other side of this first interface 8.
  • the slots 60 have a defined section for receiving and guiding through the first interface 8 these electrical connection terminals 64, so that they can firstly be integral with the electrode s 66 inside the heating compartment 6 and that they can further extend in the sleeve 48 projecting from the outer face 62 of the first plate 46.
  • an electrical terminal 64 for connecting the vehicle's electrical harness is disposed on the free end of each of the electrodes 66 extending the heating modules 4 at one end.
  • the terminal 64 has an attachment portion 68 to the electrode 66 and a connecting portion 69 formed by a tab 70 which extends in the extension of the electrode 66.
  • the fixing portion 68 takes the form of a sleeve of width slightly greater than the width of the electrode 66 (visible in FIG. 6), so as to be able to surround the associated electrode 66 and be made integral with it by welding or crimping for example, or by clinching or gluing. It will further be understood that the fixing portion 68 could, without departing from the context of the invention, not completely surround the electrode 66 and overlap on one or other of the faces of the electrode 66, for welding or gluing for example.
  • the sleeve shape is obtained by folding on itself the fixing part, leaving a space between the upper wall 72 of the sleeve extending in the plane of the connecting portion and the wall lower 74 of the sleeve folded under the bottom wall.
  • the terminal 64 is welded, or crimped, glued or clinched by way of example, on the free end of the electrode 66 at the lower wall 74 folded of the sleeve, the figures illustrating crimping points of initiation 76 on this lower wall 74.
  • the connecting portion is connected to the attachment portion by a throttling portion 78, and immediately after this throttling portion 78 there are two fins 80 which extend on each side of the radially projecting connecting portion so as to to form a shoulder abutment to the longitudinal displacement of the terminal, and which carries the tongue 70.
  • a throttling portion 78 immediately after this throttling portion 78 there are two fins 80 which extend on each side of the radially projecting connecting portion so as to to form a shoulder abutment to the longitudinal displacement of the terminal, and which carries the tongue 70.
  • the fins 80 and the tongue 70 there are provided notches 82 forming a reduction in width of the tongue 70 at its base.
  • the tongue 70 here has a substantially rectangular cross section, of shape complementary to that of the insertion slots 60 realized in the first interface 8. It can be seen, in particular in Figure 7, that the free end 71 of the tongue 70 has a slight bevel, especially to facilitate its insertion into the slot 60 corresponding.
  • the tongue 70 also comprises a detent element with elastic deformation, made by a blade 84 articulated at one of its ends on the tongue 70, about an axis transverse to the tongue 70.
  • the blade 84 is shaped, for example by punching, to take a rest position in which its free end 86 extends projecting from the longitudinal and transverse plane defined by the tongue 70. It can be seen that the blade 84 is arranged so that its free end is positioned behind its hinged end tongue 70, that is to say that the free end is closer to the fixing portion of the terminal 64.
  • connection terminals 64 are carried by the electrodes 66 and the slots 60 made in the first interface 8 open on each side of the first plate 46 so that the terminals 64, in engagement with the electrodes 66 of the side of the inner face 56 of the first plate 46, can pass through the first connection interface 8 and be in engagement with the electrical connection means connected to the vehicle electrical network on the side of the outer face 62 of the first plate 46.
  • the first connection interface 8 comprises insertion slots 60 whose cross section is complementary to that of the tabs 70 of the terminals 64.
  • the first connection interface 8 advantageously comprises housing 88 cooperating with the elements of snap 84 carried by the terminals 64.
  • the snap elements 84 with elastic deformation nt able to pass from a retracted position during the insertion of the free end portion of the terminal 64 into the corresponding slot 60 of the first connection interface 8 and a deployed position in the corresponding housing 88 when the heating module 4 is in position relative to the heating compartment 6 and the first connection interface 8.
  • two insertion slots 60 are seen from the outer face 62 of the first connection interface 8.
  • a receiving housing 88 of a detent element 84 is formed in the vicinity of each of the slots of FIG. 60, here vertically under these slots 60.
  • the housing 86 is hollowed out in the thickness of the first connection interface 8, from the outer face thereof, and thus takes a shape of open cavity on the slot d corresponding insertion 60.
  • the cavity forming the housing 88 is defined vertically opposite the slot 60 by a bottom wall 90 delimited transversely by two side walls 92 spaced apart by a width substantially equal to the width of the blade forming the element.
  • snap 84 and it is delimited longitudinally on the side of the inner face 56 of the first connection interface 8 by a vertical wall 94 while it is open and opens on the other side on the outer face 62 of the first interface of connection 8.
  • Figure 9 there is illustrated the cooperation of the detent element 84 and the housing 88 when the heating module 4 is in its final position in the heating compartment 6.
  • the free end 86 of the detent element 84 When inserting the tongue 70 of the terminal 64 in the slot 60, the free end 86 of the detent element 84, behind the articulated end, is brought into the plane of the tongue 70, in a retracted position, under the effect d e the vertical stress exerted by the walls delimiting the slot 60.
  • the heating module 4 When the heating module 4 is in its desired final position with respect to the heating compartment 6, the tongue 70 is inserted as far as possible into the slot 60, the fins 80 forming against the internal face 56 of the first plate 46 a longitudinal stop at the advancement of the terminal 64.
  • the blade of the detent element 84 is disposed at the right of the housing 88 arranged on the path of the slot 60
  • the blade 84 is no longer constrained vertically and can return to its initial deployed position projecting from the plane of the tongue 70.
  • the tongue 70 is then immobilized longitudinally, in one direction by the stop of the fins 80 against the first connecting interface 8 , and in the other direction by the abutment of the free end 86 of the elements detent 84 against the vertical wall 94 of the housing 88. It will be understood that if a heating module 4 were to be disengaged from the first connection interface 8, a tool should be used to constrain the detent element 84 to be taken. its retracted position, accessing the housing by the side of the outer face 62 of the first connection interface 8.
  • the second interface 12 comprises a second plate 96 which extends transversely to the longitudinal walls of the heating compartment 6, and substantially parallel to the first plate 46 of the first connection interface 8, and it further comprises a guide tab 98 arranged at a vertical end of the second plate 96.
  • the second plate 96 has a solid portion 100 at the end opposite to the guide tab 98, for the support of the bar 1 6, and it has a central portion provided with a opening 102 giving access to the two housings 26 and 28 inside the heating compartment 6.
  • the opening made in the second plate 96 has a height, in the vertical direction from the guide tab 98 to the 100 full part, at least equal to the height in the same direction, the housing formed in the heating compartment 6, to allow the insertion of heating modules 4 in the heating compartment 6 through this opening 102, opposite to the first connection interface 8.
  • the crimping, welding, clinching or welding of the terminals 64 on the electrodes 66 is first carried out.
  • the sleeve is placed around the free end of the electrode 66, being pressed until the free end of the electrode 66 abuts the bottom of the sleeve. In this abutment position, the terminal 64 is made integral with the electrode 66.
  • the heating modules 4 are then inserted into the appropriate housings 26 and 28 inside the heating compartment 6. For this purpose, the heating modules 4 are inserted according to the invention 4 through the opening 102 formed in the second connection interface 12. , the connection terminals 64 first, and sliding the heating modules 4 in translation to the first connection interface 8.
  • the walls of the heating modules 4 push the latching fingers 40 towards the outside of the housing that these heating modules 4 come to occupy.
  • the insertion of the second heating module 32 in the second housing 28 generates the displacement of the elastic blade 36 in the plane of the intermediate wall 24, and the boss 38 of the free end of the blade 36 pushes the first heating module 30 into the first housing 26 against the so-called upper side wall 20.
  • the tongue 70 of each terminal 64 enters the slot 60 associated with it so as to emerge on the other side of the first connection interface 8 , inside the sleeve 48.
  • the latching elements 84 carried by each terminal 64 take a locking position in the corresponding housings 88 made in the first connection interface 8 and this freezes the position of the heating modules 4.
  • FIG. position the distal end wall of the heating modules 4, that is to say that facing the second connection interface 12, is blocked by the latching fingers 4 0 which have returned to their original position by elastic return when the walls of the heating modules 4 no longer constrained them vertically.
  • This ensures a plating of the heating modules 4 against the first connection interface 8 and the correct position of the connection terminals 64 so that they sufficiently exceed the side of the outer face of the first connection interface 8 and they can be correctly connected to the source electrical connection means.
  • this longitudinal force is provided on the heating modules 4 without the addition of springs arranged between the second connection interface 1 2 and the heating modules 4.
  • the distal end of these heating modules 4 s' extends substantially to the right of the inner face of the second connection interface 12, so that the longitudinal dimension of the additional heating device 2 for heating modules 2 of a given length is improved.
  • the additional heating device 2 which must adapt to the dimensions of the duct of the ventilation system, heating and / or air conditioning in which it is housed, it will be possible to increase the length of the modules. 4 since there is no clearance between the second connection interface 12 and the distal end of the heating modules 4.
  • This longitudinal space saving to enlarge the longitudinal span of the heating modules 4 is also achieved by the recovery of the free end of the electrode 66 by the connection terminal 64.
  • the clearance required between the first connection interface 8 and the proximal end of the heating modules 4 is limited to the length of the projecting end of the electrode 66, and it is no longer necessary to provide additional clearance to provide connecting tabs projecting from the first interface of connection ion 8.
  • the additional heating device 2 of the heating device is then inserted into a duct of the heating-ventilation and / or air-conditioning installation, by initial insertion of the second connection interface 12 into an opening made in this duct.
  • the guide means carried by the second connection interface 12 are made to cooperate with complementary guiding means carried by the conduit, in order to bring the second connection interface 12 and the first connection interface 8 respectively against fixing means carried by the leads.
  • the first connection interface 8 is secured to the conduit by screwing, while the second connection interface 12 is pressed against the wall of the conduit, locked in position by indexing lugs arranged projecting from this wall. It can be provided that the second connection interface 12 is advantageously nested by force in or around a sleeve complementary to the female shape of the opening of the second connection interface 12.
  • the second interface connection 12 allows on the one hand the holding of the heating modules 4 in the additional heating device 2 and secondly the positioning of the additional heating device 2 in the conduit of the installation.
  • the ends of the connection terminals that is to say the tabs 70 projecting from the outer face of the first connection interface 8 in the center of the sleeve 48, are then connected to the vehicle electrical network.
  • the control of the additional heating device is, in the illustrated case, located elsewhere on the vehicle, for example in an electronic cockpit computer. However, one could consider integrating a control module in and / or on the first connection interface.

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  • Air-Conditioning For Vehicles (AREA)

Abstract

The invention relates to an electric heating device comprising a heating compartment for accommodating (a) heating module(s) and a first connection interface for connecting heating modules to a power supply of a vehicle, every heating module being longitudinally extended by a free end of an electrode (66) suitable for connection to said power supply near said interface. The first connection interface has at least one recessed portion for receiving a securing means (64) that is rigidly connected to a heating module and comprises an elastically deformable snap-in element (84) that can move between a retracted position when the securing means is inserted into the first connection interface and a position in which it engages the recessed portion when the heating module (4) is in position in the heating compartment. A heating device of this kind is particularly suited for arrangement in a duct of a ventilation, heating and/or air-conditioning system of a motor vehicle.

Description

DISPOSITIF DE CHAUFFAGE ELECTRIQUE  ELECTRICAL HEATING DEVICE
L'invention relève du domaine de la ventilation, du chauffage et/ou de la climatisation de véhicule automobile. Elle concerne les dispositifs de chauffage additionnel destinés à être montés dans une installation de ventilation, de chauffage et/ou de climatisation d'un véhicule automobile. The invention relates to the field of ventilation, heating and / or air conditioning of a motor vehicle. It relates to additional heating devices intended to be mounted in a ventilation system, heating and / or air conditioning of a motor vehicle.
Plus particulièrement, l'invention concerne un dispositif de chauffage additionnel comportant des éléments chauffants à résistances électriques, par exemple des résistances à coefficient de température positif (CTP), qui permettent de produire rapidement de la chaleur dans les véhicules, notamment lorsque l'on souhaite chauffer rapidement l'habitacle. More particularly, the invention relates to an additional heating device comprising heating elements with electrical resistances, for example positive temperature coefficient (PTC) resistors, which make it possible to produce heat rapidly in the vehicles, especially when wants to quickly warm up the cabin.
On connaît des dispositifs de chauffage additionnel électrique de ce type, pour le chauffage d'un flux d'air traversant notamment un conduit d'une installation de ventilation, chauffage et/ou climatisation d'un véhicule automobile, dans lequel un boîtier est apte à porter des modules chauffants par diffusion de chaleur sous l'effet d'un potentiel électrique, ledit boîtier comportant un compartiment de chauffe permettant de recevoir au moins un module chauffant s'étendant longitudinalement et une première interface de connexion qui s'étend transversalement au compartiment de chauffe. Dans le document FR 2895204, la première interface de connexion porte des pattes qui s'étendent depuis la première interface vers les modules chauffants, à l'intérieur du compartiment de chauffe, pour assurer un contact électrique avec les terminaisons que forment les extrémités libres des électrodes des modules chauffants. On a constaté que le montage des modules chauffants dans de tels dispositifs n'était pas le plus pratique et qu'il nécessitait beaucoup de place en amont du compartiment de chauffe, c'est à dire entre le module chauffant et l'interface de connexion, dans la zone de contact des électrodes et des connecteurs, ainsi qu'en aval du compartiment de chauffe où l'on doit prévoir en pratique des moyens de rappel élastique qui tendent à pousser les modules chauffants vers la première interface de connexion pour assurer le contact électrique entre les connecteurs et les extrémités libres des électrodes. Toutefois, ces moyens de rappel élastique, s'ils permettent de s'assurer du bon enfoncement des modules chauffants dans le compartiment de chauffe, ne permettent pas de s'assurer du bon positionnement des électrodes par rapport aux connecteurs et donc du bon fonctionnement du dispositif de chauffage. Electric additional heating devices of this type are known for heating a flow of air passing through a duct of a ventilation, heating and / or air conditioning system of a motor vehicle, in which a housing is suitable. to carry heating modules by heat diffusion under the effect of an electrical potential, said housing comprising a heating compartment for receiving at least one longitudinally extending heating module and a first connection interface extending transversely to the heating compartment. In the document FR 2895204, the first connection interface carries tabs which extend from the first interface to the heating modules, inside the heating compartment, to ensure electrical contact with the terminations formed by the free ends of the electrodes of the heating modules. It was found that the mounting of the heating modules in such devices was not the most practical and that it required a lot of space upstream of the heating compartment, ie between the heating module and the connection interface. in the contact area of the electrodes and connectors, and downstream of the heating compartment where it is necessary to provide elastic return means in practice which tend to push the heating modules towards the first interface connection to ensure electrical contact between the connectors and the free ends of the electrodes. However, these elastic return means, if they make it possible to ensure the proper insertion of the heating modules in the heating compartment, do not make it possible to ensure the correct positioning of the electrodes with respect to the connectors and therefore of the proper operation of the heating device.
L'invention a pour objet un dispositif de chauffage additionnel électrique pour le chauffage d'un flux d'air traversant notamment un conduit d'une installation de ventilation, chauffage et/ou climatisation d'un véhicule automobile, dans lequel un boîtier est apte à porter des modules chauffants par diffusion de chaleur sous l'effet d'un potentiel électrique. Le boîtier comporte au moins un compartiment de chauffe permettant la réception d'au moins un module chauffant s'étendant longitudinalement et une première interface de connexion qui permet la liaison du au moins un module chauffant à une alimentation électrique source du véhicule, chaque module chauffant étant prolongé longitudinalement par une extrémité libre d'électrode apte à être reliée à ladite source électrique au voisinage de ladite première interface de connexion. Selon l'invention, la première interface de connexion présente au moins un logement de réception d'un moyen de fixation, rendu solidaire d'un module chauffant, ledit moyen de fixation comportant un élément d'encliquetage à déformation élastique apte à prendre une position escamotée lors de l'insertion de l'extrémité libre de l'électrode dans la première interface de connexion et une position déployée dans ledit logement lorsque le module chauffant est en position par rapport à la première interface de connexion. The subject of the invention is an additional electrical heating device for heating a flow of air passing through a duct of a ventilation, heating and / or air-conditioning system of a motor vehicle, in which a housing is suitable. to wear heating modules by diffusion of heat under the effect of an electric potential. The housing comprises at least one heating compartment for receiving at least one longitudinally extending heating module and a first connection interface which allows the connection of the at least one heating module to a source power source of the vehicle, each heating module being extended longitudinally by an electrode free end adapted to be connected to said electrical source in the vicinity of said first connection interface. According to the invention, the first connection interface has at least one receiving housing of a fixing means, secured to a heating module, said fixing means comprising a detent element with elastic deformation able to assume a position. retracted when inserting the free end of the electrode into the first connection interface and a position deployed in said housing when the heating module is in position relative to the first connection interface.
Avantageusement, le moyen de fixation est rapporté sur l'extrémité libre de l'électrode et le logement de réception du moyen de fixation débouche dans une fente d'insertion de cette extrémité libre de l'électrode dans la première interface de connexion. Selon une caractéristique possible, il est intéressant que le logement soit creusé dans l'épaisseur de la première interface de connexion de manière à ce qu'une paroi de cette interface forme une paroi du logement faisant butée au dégagement de l'élément d'encliquetage lorsque celui-ci est en position déployée dans le logement. Advantageously, the fixing means is attached to the free end of the electrode and the receiving housing of the fixing means opens into an insertion slot of this free end of the electrode in the first connection interface. According to one possible characteristic, it is advantageous for the housing to be hollowed out in the thickness of the first connection interface so that a wall of this interface forms a wall of the housing making stop at the release of the detent element when the latter is in the deployed position in the housing.
Le dispositif de chauffage additionnel électrique selon l'invention peut comporter en outre une ou plusieurs des caractéristiques suivantes, seules ou en combinaison : The additional electrical heating device according to the invention may further comprise one or more of the following characteristics, alone or in combination:
- le moyen de fixation est formé par une partie d'extrémité libre d'un terminal de raccordement électrique qui est directement raccordé sur l'extrémité libre d'une électrode ; the fixing means is formed by a free end portion of an electrical connection terminal which is directly connected to the free end of an electrode;
- la première interface de connexion s"étend transversalement au compartiment de chauffe . the first connection interface extends transversely to the heating compartment.
Selon une série de caractéristiques propres à un mode de réalisation particulier de l'invention dans lequel le moyen de fixation est porté par un terminal électrique, qui est directement raccordé sur l'extrémité libre d'une électrode, on peut prévoir que : - le terminal de raccordement électrique comporte une partie de fixation, telle qu'une base, apte à venir en recouvrement de l'extrémité libre d'électrode, et une languette formant une partie d'extrémité libre du terminal de raccordement électrique apte à être insérée dans une fente d'insertion de la première interface de connexion ; - la partie de fixation, telle qu'une base, du terminal est rendue solidaire de l'extrémité libre de l'électrode, par exemple par sertissage, par clinchage ou par collage ; According to a series of characteristics specific to a particular embodiment of the invention in which the fixing means is carried by an electrical terminal, which is directly connected to the free end of an electrode, it can be provided that: electrical connection terminal comprises a fixing portion, such as a base, adapted to overlap the free end of the electrode, and a tab forming a free end portion of the electrical connection terminal adapted to be inserted into an insertion slot of the first connection interface; - The fixing portion, such as a base, of the terminal is secured to the free end of the electrode, for example by crimping, by clinching or gluing;
- la languette présente une section de forme rectangulaire, complémentaire de la forme rectangulaire de la section de la fente d'insertion correspondante réalisée dans la première interface de connexion ; the tongue has a section of rectangular shape, complementary to the rectangular shape of the section of the corresponding insertion slot made in the first connection interface;
- l'élément d'encliquetage est porté par la languette en prenant la forme d'une lame de déformation élastique dont l'extrémité libre s'étend, dans une position de repos, en saillie du plan principal défini par la languette, l'extrémité libre de la lame étant positionnée en arrière de son extrémité solidaire de la languette, c'est-à-dire plus proche de la partie de fixation, telle qu'une base, du terminal ; the detent element is carried by the tongue in the form of an elastic deformation blade whose free end extends in a rest position, projecting from the main plane defined by the tongue, the free end of the blade being positioned behind its end integral with the tongue, that is to say closer to the fixing portion, such as a base, the terminal;
- le terminal de raccordement électrique traverse la première interface de connexion, la fente d'insertion réalisée dans la première interface à cet effet débouchant sur l'une et l'autre des faces de la première interface perpendiculaires au module chauffant. - The electrical connection terminal passes through the first connection interface, the insertion slot made in the first interface for this purpose opening on one and the other of the faces of the first interface perpendicular to the heating module.
Selon une autre caractéristique de l'invention, le boîtier comporte un compartiment de chauffe porteur des modules chauffants et deux interfaces de connexion disposées aux extrémités longitudinales dudit compartiment de chauffe, et le boîtier est formé d'une seule et unique pièce. Les modules chauffants sont insérés dans le compartiment de chauffe par une ouverture d'accès réalisée dans la deuxième interface de connexion disposée à l'opposé de la première interface de connexion apte à être traversée par au moins un terminal de raccordement et comportant le au moins un logement de réception dudit élément d'encliquetage. On présente ainsi une configuration particulièrement avantageuse dans laquelle l'insertion des modules chauffants dans le compartiment de chauffe et l'insertion des terminaux électriques de raccordement dans les fentes correspondantes se fait avec un unique mouvement de translation. La bonne insertion du terminal électrique dans la fente, qui conditionne le bon raccordement des modules chauffants à la source électrique du véhicule et donc le bon fonctionnement du dispositif de chauffage, en est donc facilitée. According to another characteristic of the invention, the housing comprises a heating compartment carrying the heating modules and two connection interfaces arranged at the longitudinal ends of said heating compartment, and the housing is formed of a single piece. The heating modules are inserted into the heating compartment via an access opening made in the second connection interface disposed opposite the first connection interface able to be traversed by at least one connection terminal and comprising the at least one connection terminal. a housing for receiving said detent element. A particularly advantageous configuration is thus presented in which the insertion of the heating modules into the heating compartment and the insertion of the electrical connection terminals into the corresponding slots is done with a single translational movement. The proper insertion of the electrical terminal in the slot, which conditions the good connection of the heating modules to the vehicle's electrical source and therefore the proper operation of the heating device, is thus facilitated.
Le dispositif de chauffage selon l'invention peut comporter en outre une ou plusieurs des caractéristiques suivantes, seules ou en combinaison : - le terminal électrique de raccordement comporte une partie de fixation, apte à coopérer avec l'extrémité libre d'électrode, et une languette formant la partie d'extrémité libre du terminal apte à traverser la première interface de connexion dans la fente d'insertion ; - la languette est apte à traverser la première platine de la première interface de connexion dans le fente d'insertion ; The heating device according to the invention may furthermore comprise one or more of the following characteristics, alone or in combination: the electrical connection terminal comprises a fixing part, able to cooperate with the free end of the electrode, and a tongue forming the free end portion of the terminal adapted to pass through the first connection interface in the insertion slot; the tongue is able to pass through the first plate of the first connection interface in the insertion slot;
- le terminal comporte une base, apte à venir en recouvrement de l'extrémité libre d'électrode ; - la languette présente une section de forme rectangulaire, complémentaire de la forme rectangulaire de la section de la fente d'insertion correspondante réalisée dans la première interface de connexion, la fente d'insertion étant préférentiellement réalisée dans la première platine ; the terminal comprises a base adapted to overlap the free end of the electrode; the tongue has a section of rectangular shape, complementary to the rectangular shape of the section of the corresponding insertion slot made in the first connection interface, the insertion slot being preferably made in the first plate;
- l'extrémité libre de la languette présente au moins un biseau, pour former une partie pointue en bout de l'électrode et faciliter l'insertion du terminal dans la fente correspondante ; - The free end of the tongue has at least one bevel, to form a pointed portion at the end of the electrode and facilitate the insertion of the terminal into the corresponding slot;
- le terminal électrique de raccordement peut comporter des ailettes qui s'étendent, à la jonction de la partie de fixation et de la partie d'extrémité du terminal, et en saillie perpendiculaire à la direction longitudinale, de manière à former une butée de fin de course contre la face interne de la première interface de connexion. - The electrical connection terminal may comprise fins which extend at the junction of the fixing portion and the end portion of the terminal, and projecting perpendicular to the longitudinal direction, so as to form a stop end. race against the inner face of the first connection interface.
Selon une caractéristique possible, le terminal électrique de raccordement comporte un élément d'encliquetage à déformation élastique apte à prendre une position escamotée lors de l'insertion du terminal dans la fente et une position déployée dans un logement réalisé de façon adjacente à ladite fente lorsque le terminal est en position de raccordement. According to a possible characteristic, the electrical connection terminal comprises an elastically deformable snap-in element able to take a retracted position when the terminal is inserted into the slot and a position deployed in a housing made adjacent to said slot when the terminal is in the connection position.
Selon des caractéristiques particulières d'un mode de réalisation dans lequel le boîtier comporte une deuxième interface de connexion disposée à l'extrémité longitudinale du boîtier opposée à la première interface de connexion traversée par le terminal de raccordement, les modules chauffants peuvent s'étendre longitudinalement entre les interfaces de connexion de sorte que l'extrémité distale des modules chauffants est disposée longitudinalement sensiblement en regard de cette deuxième interface de connexion. Il convient de noter que selon l'invention, le mode de raccordement par insertion des terminaux dans la première interface de connexion permet de se passer des ressorts habituellement placés en fond du compartiment de chauffe à l'opposé de la première interface de connexion pour plaquer les modules chauffants contre les pattes de raccordement. Ici, l'enfoncement des terminaux de raccordement, et leur éventuel blocage en position par des éléments d'encliquetage portés directement par les terminaux, est suffisant, de sorte qu'un gain de place longitudinal est réalisé, que l'on utilise avantageusement selon l'invention pour agrandir la dimension longitudinale des modules chauffants et l'efficacité du dispositif de chauffage. According to particular features of an embodiment in which the housing comprises a second connection interface disposed at the longitudinal end of the housing opposite to the first connection interface traversed by the connection terminal, the heating modules can extend longitudinally. between the connection interfaces so that the distal end of the heating modules is disposed longitudinally substantially opposite this second connection interface. It is right to note that according to the invention, the method of connection by insertion of the terminals in the first connection interface makes it possible to dispense with the springs usually placed at the bottom of the heating compartment opposite the first connection interface for pressing the heating modules against the connection tabs. Here, the depression of the connection terminals, and their possible locking in position by snap-in elements carried directly by the terminals, is sufficient, so that a longitudinal space saving is achieved, which is advantageously used according to the invention to enlarge the longitudinal dimension of the heating modules and the efficiency of the heating device.
Selon une autre caractéristique de l'invention, le boîtier comporte un compartiment de chauffe porteur des modules chauffants et deux interfaces de connexion disposées aux extrémités longitudinales dudit compartiment de chauffe, ledit boîtier étant formé d'une seule et unique pièce. Les modules chauffants sont insérés dans le compartiment de chauffe par un accès réalisé dans la deuxième interface de connexion, disposée à l'opposé de la première interface de connexion apte à être traversée par au moins un terminal de raccordement. On présente ainsi une configuration particulièrement avantageuse dans laquelle l'insertion des modules chauffants dans le compartiment de chauffe et l'insertion des terminaux électriques de raccordement dans les fentes correspondantes se fait avec un unique mouvement de translation. La bonne insertion du terminal électrique dans la fente, qui conditionne le bon raccordement des modules chauffants à la source électrique du véhicule et donc le bon fonctionnement du dispositif de chauffage, en est donc facilitée. Le boîtier du dispositif de chauffage électrique d'un flux d'air selon l'invention peut comporter en outre une ou plusieurs des caractéristiques suivantes, seules ou en combinaison : According to another characteristic of the invention, the housing comprises a heating compartment carrying heating modules and two connection interfaces arranged at the longitudinal ends of said heating compartment, said housing being formed of a single piece. The heating modules are inserted into the heating compartment by an access made in the second connection interface, arranged opposite the first connection interface adapted to be traversed by at least one connection terminal. A particularly advantageous configuration is thus presented in which the insertion of the heating modules into the heating compartment and the insertion of the electrical connection terminals into the corresponding slots is done with a single translational movement. The proper insertion of the electrical terminal in the slot, which conditions the good connection of the heating modules to the vehicle's electrical source and therefore the proper operation of the heating device, is thus facilitated. The housing of the electric airflow heating device according to the invention may further comprise one or more of the following characteristics, alone or in combination:
- le au moins un module chauffant s'étend, lorsqu'il est disposé dans le compartiment de chauffe, selon une direction d'extension générale entre une première extrémité et une deuxième extrémité ; - la direction d'extension générale dudit au moins un module chauffant est sensiblement longitudinale ; the at least one heating module extends, when it is arranged in the heating compartment, in a direction of general extension between a first end and a second end; the direction of general extension of said at least one heating module is substantially longitudinal;
- le compartiment de chauffe s'étend selon une direction d'extension générale entre une première et une deuxième extrémité ; - la direction d'extension générale du compartiment de chauffe est sensiblement longitudinale ; the heating compartment extends in a direction of general extension between a first and a second end; the general extension direction of the heating compartment is substantially longitudinal;
- le compartiment de chauffe destiné à recevoir le bloc de chauffe présente sensiblement la forme d'un parallélépipède ; - The heating compartment for receiving the heating block has substantially the shape of a parallelepiped;
- au moins une partie d'au moins un côté du compartiment de chauffe est évidée ou ajourée ; - At least a portion of at least one side of the heating compartment is recessed or openwork;
- le compartiment de chauffe comporte deux côtés latéraux parallèles s'étendant selon la direction d'extension générale du compartiment de chauffe et deux côtés principaux parallèles s'étendant selon la direction d'extension générale du compartiment de chauffe ; - ces deux côtés latéraux sont matérialisés par des parois ; the heating compartment comprises two parallel lateral sides extending in the general direction of extension of the heating compartment and two parallel main sides extending in the general direction of extension of the heating compartment; these two lateral sides are materialized by walls;
- les deux côtés latéraux du compartiment de chauffe sont sensiblement en regard l'un de l'autre ; the two lateral sides of the heating compartment are substantially facing one another;
- les deux côtés principaux du compartiment de chauffe sont sensiblement en regard l'un de l'autre ; - les côtés latéraux s'étendent sensiblement perpendiculairement aux côtés principaux ; - The two main sides of the heating compartment are substantially facing one another; the lateral sides extend substantially perpendicularly to the main sides;
- chacun des côtés principaux comporte au moins un montant transversal reliant lesdits côtés latéraux ; each of the main sides comprises at least one transverse upright connecting said lateral sides;
- chacune des côtés principaux comporte au moins deux montants transversaux distants les uns des autres et préférentiellement parallèles ; - chacune des extrémités d'un montant transversal est reliée à un côté latéral du compartiment de chauffe ; - Each of the main sides comprises at least two transverse amounts distant from each other and preferably parallel; each of the ends of a transverse upright is connected to a lateral side of the heating compartment;
- les interfaces de connexion sont disposées respectivement à des extrémités opposées du compartiment de chauffe, ces extrémités opposées étant préférentiellement ladite première et ladite deuxième extrémité entre lesquelles s'étend ledit compartiment de chauffe selon la direction d'extension générale ; - The connection interfaces are respectively disposed at opposite ends of the heating compartment, these opposite ends being preferably said first and said second end between which said heating compartment in the direction of general extension;
- les modules chauffants comportent au moins un élément apte à produire de la chaleur et au moins un élément associé apte à échanger de la chaleur avec le flux d'air traversant le bloc de chauffe ; - ledit au moins un élément apte à produire de la chaleur est un élément résistif ; the heating modules comprise at least one element capable of producing heat and at least one associated element able to exchange heat with the flow of air passing through the heating block; said at least one element capable of producing heat is a resistive element;
- ledit au moins un élément apte à produire de la chaleur est un élément résistif de type à coefficient de température positif (CTP) ; said at least one element capable of producing heat is a positive temperature coefficient (PTC) type resistive element;
- ledit au moins un élément apte à produire de la chaleur est un élément résistif de type à coefficient de température positif (CTP) disposé dans ou sur un support tel qu'un barreau ; said at least one element capable of generating heat is a positive temperature coefficient (PTC) resistive element disposed in or on a support such as a bar;
- ledit au moins un élément apte à produire de la chaleur est un élément résistif disposé entre deux électrodes ; said at least one element capable of producing heat is a resistive element placed between two electrodes;
- ledit au moins un élément associé qui est apte à échanger de la chaleur est un élément radiant ou un dissipateur thermique ; - ledit au moins un élément associé apte à échanger de la chaleur est au moins une ailette traversée par au moins un élément apte à produire de la chaleur, ou encore des intercalaires tels que des rubans métalliques plissés ou ondulés disposés entre des éléments aptes à produire de la chaleur ; said at least one associated element which is capable of exchanging heat is a radiant element or a heat sink; said at least one heat-exchanging associated element is at least one fin traversed by at least one element capable of producing heat, or interleaves such as pleated or corrugated metal ribbons arranged between elements capable of producing heat ;
- ledit au moins un élément apte à produire de la chaleur est disposé entre deux éléments aptes à échanger de la chaleur ; - le au moins un module chauffant comporte un élément apte à produire de la chaleur disposé entre deux éléments aptes à échanger de la chaleur ; said at least one element capable of generating heat is disposed between two elements able to exchange heat; the at least one heating module comprises an element capable of producing heat disposed between two elements capable of exchanging heat;
- le au moins un module chauffant comporte deux éléments aptes à produire de la chaleur et trois éléments aptes à échanger de la chaleur, un élément apte à échanger de la chaleur étant disposé entre deux éléments aptes à produire de la chaleur, chacun de ces éléments aptes à produire de la chaleur étant disposé entre l'élément central apte à échanger de la chaleur et un élément externe apte à échanger de la chaleur. the at least one heating module comprises two elements capable of producing heat and three elements capable of exchanging heat, a heat exchangeable element being disposed between two elements capable of producing heat, each of these elements heat generating means being disposed between the central heat exchangeable element and an external heat exchangeable element.
Selon une caractéristique possible, au moins un côté latéral du compartiment de chauffe peut comporter au moins un doigt d'encliquetage à déformation élastique permettant la retenue d'un module chauffant respectif. Ce doigt d'encliquetage est disposé préférentiellement à proximité de la deuxième interface de connexion. According to a possible characteristic, at least one lateral side of the heating compartment may comprise at least one resiliently deformable snap-on finger allowing the retention of a respective heating module. This detent finger is preferably disposed near the second connection interface.
Selon une caractéristique possible, le compartiment de chauffe comprend au moins une paroi intermédiaire s'étendant à l'intérieur du logement dans lequel peut être installé au moins un module chauffant. According to one possible characteristic, the heating compartment comprises at least one intermediate wall extending inside the housing in which at least one heating module can be installed.
Le boîtier du dispositif de chauffage électrique d'un flux d'air selon l'invention peut comporter en outre une ou plusieurs des caractéristiques suivantes, seules ou en combinaison, en relation avec ladite paroi intermédiaire : - ladite au moins une paroi intermédiaire est disposée sensiblement parallèlement auxdits côtés latéraux du compartiment de chauffe, et entre ces côtés latéraux qui s'étendent dans la direction d'extension générale du compartiment de chauffe; The housing of the electric airflow heating device according to the invention may furthermore comprise one or more of the following characteristics, alone or in combination, in relation to said intermediate wall: said at least one intermediate wall is arranged substantially parallel to said lateral sides of the heating compartment, and between these lateral sides extending in the general extension direction of the heating compartment;
- ladite au moins une paroi intermédiaire s'étend selon une direction d'extension générale entre une première extrémité et une deuxième extrémité ; - ladite au moins une paroi intermédiaire est sensiblement longitudinale ; said at least one intermediate wall extends in a direction of general extension between a first end and a second end; said at least one intermediate wall is substantially longitudinal;
- ladite au moins une paroi intermédiaire s'étend sur toute la longueur du compartiment de chauffe, d'une interface de connexion à l'autre ; - ladite au moins une paroi intermédiaire comporte au moins un orifice ; said at least one intermediate wall extends over the entire length of the heating compartment, from one connection interface to the other; said at least one intermediate wall comprises at least one orifice;
- ladite au moins une paroi intermédiaire est poinçonnée ; said at least one intermediate wall is punched;
- au moins une partie de ladite au moins une paroi intermédiaire présente les propriétés d'une lame de rappel élastique ; - ladite au moins une paroi intermédiaire permet de subdiviser le logement principal du compartiment de chauffe en deux sous-parties permettant chacune de recevoir au moins un module chauffant ; une première sous-partie, ou premier logement, est délimitée par une face interne d'un côté latéral du compartiment de chauffe et la paroi intermédiaire et une deuxième sous-partie, ou deuxième logement, est délimitée par une face interne du côté latéral opposé et la paroi intermédiaire ; at least a portion of said at least one intermediate wall has the properties of an elastic return blade; said at least one intermediate wall makes it possible to subdivide the main housing of the heating compartment into two sub-parts, each of which makes it possible to receive at least one heating module; a first sub-part, or first housing, is delimited by an inner face of a lateral side of the heating compartment and the intermediate wall and a second sub-part, or second housing, is delimited by an inner face of the opposite lateral side and the intermediate wall;
- la paroi intermédiaire est décentrée afin d'être plus proche de l'un desdits côtés latéraux du compartiment de chauffe, le moyen permettant de créer une perte de charge est venu de matière avec ce côté latéral ; - la paroi intermédiaire comporte au moins un doigt d'encliquetage ; - The intermediate wall is off-center to be closer to one of said lateral sides of the heating compartment, the means for creating a pressure drop is integral with this side; the intermediate wall comprises at least one detent finger;
- le premier logement est dimensionné pour recevoir un module chauffant comportant un élément apte à produire de la chaleur disposé entre deux éléments aptes à échanger de la chaleur ; the first housing is sized to receive a heating module comprising an element capable of producing heat disposed between two elements able to exchange heat;
- le deuxième logement est dimensionné pour recevoir un module chauffant comportant deux éléments aptes à produire de la chaleur et trois éléments aptes à échanger de la chaleur. the second housing is sized to receive a heating module comprising two elements capable of producing heat and three elements able to exchange heat.
Selon une caractéristique possible, le boîtier d'un dispositif de chauffage électrique selon l'invention comporte au moins un moyen permettant de créer une perte de charge du flux d'air circulant dans l'emplacement dans lequel ledit boîtier est installé. La création de cette perte de charge permet avantageusement d'accentuer l'échange de chaleur entre le dispositif de chauffage électrique et ledit flux d'air. According to a possible characteristic, the housing of an electric heating device according to the invention comprises at least one means for creating a pressure drop of the air flow circulating in the location in which said housing is installed. The creation of this pressure drop advantageously makes it possible to accentuate the heat exchange between the electric heating device and the said air flow.
Ce moyen permettant de créer une perte de charge peut présenter, notamment mais non exclusivement, la forme d'une lame, d'une barrette, d'un profilé, d'une plaque. This means for creating a pressure drop can have, in particular but not exclusively, the shape of a blade, a bar, a profile, a plate.
L'invention concerne également une installation de ventilation, chauffage et/ou climatisation comportant un dispositif de chauffage tel qu'il vient d'être présenté. The invention also relates to a ventilation, heating and / or air conditioning installation comprising a heating device as just presented.
D'autres caractéristiques et avantages de la présente invention apparaîtront plus clairement à l'aide de la description et des dessins parmi lesquels : Other features and advantages of the present invention will emerge more clearly from the description and the drawings, among which:
- la figure 1 est une vue de côté d'un dispositif de chauffage additionnel apte à être logé selon l'invention en travers d'un conduit de circulation d'air d'un ensemble de chauffage-ventilation et climatisation ; - Figure 1 is a side view of an additional heating device adapted to be housed according to the invention across an air duct of a set of heating-ventilation and air conditioning;
- la figure 2 est une vue en perspective, de trois-quarts arrière, du dispositif de la figure 1 , dans laquelle les modules chauffants ont été retirés pour rendre particulièrement visibles les parois constitutives du compartiment de chauffe de ces modules chauffants ; - Figure 2 is a perspective view, rear three-quarters of the device of Figure 1, wherein the heating modules have been removed to make particularly visible the constituent walls of the heating compartment of these heating modules;
- la figure 3 est une vue en perspective, de trois quart avant, du dispositif de la figure 1 , rendant notamment visibles les extrémités libres de terminaux électriques débouchant à travers une première interface de connexion ; FIG. 3 is a perspective view, three quarter front, of the device of FIG. 1, making the free ends of electrical terminals opening out through a first connection interface particularly visible;
- la figure 4 est une vue en perspective, de trois quart arrière, des modules chauffants aptes à être logés dans le compartiment de chauffe du dispositif de chauffage selon l'invention, munis respectivement de terminaux électriques rapportés chacun sur une languette d'électrode prolongeant en saillie les modules chauffants ; FIG. 4 is a perspective view, three quarter rear view, of the heating modules able to be housed in the heating compartment of the heating device according to the invention, provided respectively with electrical terminals, each attached to an electrode tongue extending projecting the heating modules;
- la figure 5 est une vue des éléments illustrés sur la figure 4, cette fois en perspective de trois quart avant ; - la figure 6 est une vue, selon la même perspective que celle de la figure 5, d'un module chauffant et du terminal électrique associé en position montée et d'un module chauffant et du terminal électrique associé en position démontée ; - la figure 7 est une représentation en perspective d'un terminal électrique selon la même perspective que celle de la figure 4 ; FIG. 5 is a view of the elements illustrated in FIG. 4, this time in perspective of three quarter front; - Figure 6 is a view, in the same perspective as that of Figure 5, a heating module and the associated electrical terminal in the mounted position and a heating module and the associated electrical terminal in disassembled position; FIG. 7 is a perspective representation of an electrical terminal according to the same perspective as that of FIG. 4;
- la figure 8 est une vue de détail de la première interface de connexion illustrée sur la figure 3, sans les terminaux électriques ; FIG. 8 is a detailed view of the first connection interface illustrated in FIG. 3, without the electrical terminals;
- et la figure 9 est une vue en coupe d'un terminal électrique et de la première interface de connexion dans la position assemblée illustrée sur la figure 3. and FIG. 9 is a sectional view of an electrical terminal and of the first connection interface in the assembled position illustrated in FIG. 3.
Dans la description qui va suivre, on se référera à une orientation fonction des axes Longitudinaux, Verticaux et Transversaux tels qu'ils sont définis arbitrairement par le trièdre L,V,T représenté sur les figures 1 à 4. Le choix des appellations de ces axes n'est pas limitatif de l'orientation que peut prendre le dispositif dans son application à un véhicule automobile, et l'utilisation de termes tels que « supérieur » et « inférieur » est choisie en fonction de l'orientation dans l'illustration accompagnant cette description sans qu'elle soit non plus limitative. In the description which follows, reference will be made to an orientation function of the Longitudinal, Vertical and Transversal axes as arbitrarily defined by the trihedron L, V, T represented in FIGS. 1 to 4. The choice of the names of these axes is not limiting the orientation that can take the device in its application to a motor vehicle, and the use of terms such as "upper" and "lower" is chosen according to the orientation in the illustration accompanying this description without being either limiting.
On a illustré sur les figures 1 à 3 un dispositif de chauffage additionnel selon l'invention, qui est apte à être logé en travers d'un conduit de circulation d'air d'une installation de ventilation, chauffage et/ou climatisation, de manière à transformer l'énergie électrique prélevée sur le véhicule en énergie thermique restituée dans l'air traversant ladite installation de ventilation, chauffage et/ou climatisation. L'installation n'est pas ici représentée, mais on comprendra qu'un conduit principal de cette installation comporte de façon classique une ouverture réalisée dans la paroi pour l'insertion du dispositif de chauffage additionnel. FIGS. 1 to 3 show an additional heating device according to the invention, which is suitable for being housed across an air circulation duct of a ventilation, heating and / or air conditioning system, in order to transform the electrical energy taken from the vehicle into thermal energy restored in the air passing through said ventilation, heating and / or air conditioning system. The installation is not shown here, but it will be understood that a main conduit of this installation conventionally comprises an opening made in the wall for the insertion of the additional heating device.
Le dispositif de chauffage additionnel 2 selon l'invention comporte un boîtier et des modules chauffants 4 aptes à transformer un courant électrique en énergie thermique. On pourra se référer au document brevet FR2895204 pour la description plus détaillée des modules chauffants et un exemple de réalisation avec la présence de dissipateurs thermiques enserrés par des électrodes de part et d'autre d'une ou plusieurs pierres à coefficient de température positif (effet CTP). The additional heating device 2 according to the invention comprises a housing and heating modules 4 capable of transforming an electric current into thermal energy. We can refer to the patent document FR2895204 for the more detailed description of the heating modules and an embodiment with the presence of heat sinks enclosed by electrodes on either side of one or more stones with positive temperature coefficient (effect CTP).
Selon l'invention, le boîtier du dispositif de chauffage additionnel 2 est formé par un boîtier monobloc comportant un compartiment de chauffe 6 de réception des modules chauffants 4, une première interface de connexion 8 disposée à une extrémité proximale 10 du compartiment de chauffe 6 pour le raccordement du dispositif à un réseau électrique du véhicule et l'alimentation des modules chauffants 4, une deuxième interface 12, notamment de fixation mécanique, qui est disposée à l'extrémité distale 14 du compartiment de chauffe 6 opposée à l'extrémité proximale portant la première interface de connexion 8 et qui est apte à coopérer avec une paroi du conduit de l'installation de ventilation, chauffage et/ou climatisation, ainsi qu'une barrette 1 6 qui s'étend le long du compartiment de chauffe 6 entre les deux interfaces de connexion 8, 12. Le dispositif de chauffage additionnel 2 est réalisé en un matériau plastique, par exemple du polypropylène ou du polyamide, chargé en fibres de verre. On considère que le compartiment de chauffe 6 et les deux interfaces de connexion 8, 12 sont monoblocs dès lors que leur séparation entraîne une destruction du compartiment de chauffe 6 ou de l'une et/ou l'autre des interfaces 8, 12. On comprend ici que le compartiment de chauffe 6 et les deux interfaces 8, 12 sont issus d'une seule et même opération de moulage. Toutefois, le compartiment de chauffe 6 et les interfaces de connexion 8, 12 pourraient être réalisés indépendamment les uns des autres et être rendus solidaire ensuite, sans que cela sorte du contexte de l'invention. According to the invention, the housing of the additional heating device 2 is formed by a one-piece housing comprising a heating compartment 6 for receiving the heating modules 4, a first connection interface 8 disposed at a proximal end 10 of the heating compartment 6 for the connection of the device to an electrical network of the vehicle and the supply of the heating modules 4, a second interface 12, in particular of mechanical fixing, which is disposed at the distal end 14 of the heating compartment 6 opposite the proximal end bearing the first connection interface 8 and which is adapted to cooperate with a duct wall of the ventilation system, heating and / or air conditioning, and a bar 1 6 which extends along the heating compartment 6 between the two connection interfaces 8, 12. The additional heating device 2 is made of a plastic material, for example polypropylene or polyol mide, loaded with fiberglass. It is considered that the heating compartment 6 and the two connection interfaces 8, 12 are monoblock as soon as their separation causes destruction of the heating compartment 6 or one and / or the other of the interfaces 8, 12. Here it is understood that the heating compartment 6 and the two interfaces 8, 12 come from one and the same molding operation. However, the heating compartment 6 and the connection interfaces 8, 12 could be made independently of each other and then secured, without departing from the context of the invention.
Le compartiment de chauffe 6 présente une forme de parallélépipède rectangle dont les deux faces principales sont ajourées pour permettre la diffusion dans le conduit de la chaleur dégagée par les modules chauffants 4 logés à l'intérieur du compartiment de chauffe 6. Des montants 18, disposés à intervalles, réguliers ou non, les uns des autres, s'étendent verticalement sur toute la hauteur de ces faces principales afin de rigidifier l'ensemble sans pénaliser la perte de charge ni le passage du flux d'air. The heating compartment 6 has a rectangular parallelepiped shape whose two main faces are perforated to allow diffusion in the duct of the heat released by the heating modules 4 housed inside the heating compartment 6. The uprights 18, arranged at intervals, regular or not, each other, extend vertically over the entire height of these main faces to stiffen the assembly without penalizing the pressure drop or the passage of the air flow.
Le compartiment de chauffe 6 comporte outre ces montants 18, trois parois longitudinales, parallèles entre elles et parmi lesquelles on distingue deux parois latérales 20, 22 et une paroi intermédiaire 24 disposée entre ces parois latérales 20, 22. Les montants 18 prolongent perpendiculairement les deux parois latérales 20, 22 depuis un bord transversal respectif pour relier les parois latérales 20, 22 entre elles. On définit de la sorte deux logements distincts de réception des modules chauffants dans le compartiment de chauffe 6. Un premier logement 26 est défini par la paroi latérale dite supérieure 20, les montants 18 et la paroi intermédiaire 24, tandis qu'un deuxième logement 28 est défini par la paroi latérale dite inférieure 22, les montants 8 et la paroi intermédiaire 24. The heating compartment 6 comprises in addition to these uprights 18, three longitudinal walls, parallel to each other and among which are distinguished two side walls 20, 22 and an intermediate wall 24 disposed between these side walls 20, 22. The uprights 18 extend perpendicularly the two side walls 20, 22 from a respective transverse edge to connect the side walls 20, 22 therebetween. In this way two separate housing units for receiving the heating modules are defined in the heating compartment 6. A first housing 26 is defined by the so-called upper lateral wall 20, the uprights 18 and the intermediate wall 24, while a second housing 28 is defined by the so-called lower side wall 22, the uprights 8 and the intermediate wall 24.
Dans l'exemple illustré, on peut distinguer une paroi latérale dite supérieure 20 et une paroi latérale dite inférieure 22, la paroi latérale dite supérieure 20 étant la paroi latérale porteuse de la barrette 1 6, et la paroi intermédiaire 24 est décentrée dans la direction verticale de sorte qu'elle est plus proche de la paroi latérale dite supérieure 20. Il en résulte que, tel que cela est visible sur les figures, le premier logement 26 présente une hauteur dans la direction verticale plus petite que celle du deuxième logement 28, et que le premier logement 26 est dimensionné pour recevoir un premier module chauffant 30 formé de deux dissipateurs thermiques 29, tandis que le deuxième logement 28 est dimensionné pour recevoir un deuxième module chauffant 32 formé de trois dissipateurs thermiques 29. On comprend que ceci est donné à titre d'exemple et que la hauteur des logements, dans la direction verticale définie arbitrairement sur les figures, pourrait varier, notamment en fonction de la position de la paroi intermédiaire 24, sans que l'on sorte du contexte de l'invention. Le nombre de dissipateurs thermiques 29 formant le ou les modules chauffants 30, 32, nombre ici égal à cinq tel que cela est notamment visible sur les figures 1 et 4, pourrait de la sorte être également modifié. La paroi intermédiaire 24 comporte des rebords de guidage 34 qui s'étendent en saillie verticale, partiellement le long de la paroi intermédiaire 24, de chaque côté transversal de celle-ci, pour faciliter le guidage en translation des modules chauffants 30, 32 dans les logements 26, 28 définis dans le compartiment de chauffe 6, lors de l'insertion par coulissement de ceux-ci. On comprend que les parois latérales 20, 22 comportent avantageusement des rebords de guidage équivalents. In the illustrated example, it is possible to distinguish an upper side wall 20 and a lower side wall 22, the so-called upper side wall 20 being the supporting side wall of the bar 1 6, and the intermediate wall 24 is off-center in the direction vertically so that it is closer to the so-called upper side wall 20. As a result, as seen in the figures, the first housing 26 has a height in the vertical direction smaller than that of the second housing 28 , and that the first housing 26 is sized to receive a first heating module 30 formed of two heat sinks 29, while the second housing 28 is sized to receive a second heating module 32 formed of three heat sinks 29. It is understood that this is given by way of example and that the height of the housings, in the vertical direction defined arbitrarily in the figures, could vary ier, in particular depending on the position of the intermediate wall 24, without leaving the context of the invention. The number of heat sinks 29 forming the heating module (s) 30, 32, here number five as can be seen in particular in FIGS. 1 and 4, could thus also be modified. The intermediate wall 24 has guide flanges 34 which extend in vertical projection, partially along the intermediate wall 24, on each transverse side thereof, to facilitate the translational guidance of the heating modules 30, 32 in the housings 26, 28 defined in the heating compartment 6, during the sliding insertion thereof. It is understood that the side walls 20, 22 advantageously comprise equivalent guide edges.
La paroi intermédiaire 24 comporte en outre une lame à déformation élastique 36, réalisée notamment par un poinçonnage partiel d'une portion de la paroi, de sorte qu'elle est articulée à la paroi intermédiaire 24 à une première extrémité longitudinale et qu'elle présente à l'opposé une extrémité libre qui s'étend, dans la position de repos de la lame 36, en saillie du plan défini par la paroi intermédiaire 24, dans le deuxième logement 28. La lame 36 est conformée de sorte que cette extrémité libre est rappelée par ressort dans cette position en saillie dans le deuxième logement 28. Par ailleurs, il est visible sur la figure 1 que l'extrémité libre comporte un bossage 38 en saillie du plan de la lame 36 dans le sens du rapprochement du plan de la paroi intermédiaire 24, de sorte que lorsque la lame 36 est contrainte pour se retrouver dans le plan défini par la paroi intermédiaire 24, le bossage 38 est situé dans le premier logement 26. On comprend que les parois latérales 20 et 22 peuvent comporter une lame à déformation élastique qui s'étend dans l'un ou l'autre des logements 26, 28 pour réaliser la même fonction de maintien des modules chauffants 30, 32 dans le logement. The intermediate wall 24 further comprises an elastically deformable blade 36, made in particular by partial punching of a portion of the wall, so that it is articulated to the intermediate wall 24 at a first longitudinal end and has opposite a free end which extends, in the rest position of the blade 36, projecting from the plane defined by the intermediate wall 24, in the second housing 28. The blade 36 is shaped so that this free end is recalled by spring in this projecting position in the second housing 28. In addition, it is visible in Figure 1 that the free end has a boss 38 projecting from the plane of the blade 36 in the direction of the approximation of the plane of the intermediate wall 24, so that when the blade 36 is constrained to be in the plane defined by the intermediate wall 24, the boss 38 is located in the first housing 26. It is understood that the side walls 20 and 22 may comprise an elastically deformable blade which extends in one or other of the housing 26, 28 to perform the same function of holding the heating modules 30, 32 in the housing.
Sur la figure 3, on peut voir des doigts d'encliquetage 40, à déformation élastique, qui sont réalisés aux extrémités distales 42, c'est-à-dire les extrémités tournées vers la deuxième interface de connexion 12, des parois latérales 20, 22 et de la paroi intermédiaire 24. Chaque doigt d'encliquetage 40 est réalisé de manière à s'étendre en saillie verticale de la paroi qu'il prolonge, les doigts 40 portés par les parois latérales 20 et 22 s'étendant en saillie vers la paroi intermédiaire 24 tandis que cette paroi intermédiaire 24 présente un doigt d'encliquetage 40 s'étendant verticalement aussi bien vers la paroi latérale supérieure 20 que vers la paroi latérale inférieure 22. Le doigt d'encliquetage 40 présente une face externe 44, tournée vers la deuxième interface de connexion 12, qui est inclinée par rapport à la verticale et une face interne, tournée vers l'intérieur du compartiment de chauffe 6, qui est sensiblement droite pour former une butée de dégagement pour les modules chauffants 30, 32 lorsqu'ils sont insérés dans le compartiment de chauffe 6 du dispositif. On comprend que de telles formes des doigts facilitent l'écartement des doigts 40 lors du passage des modules chauffants 30, 32 vers l'intérieur du compartiment de chauffe 6 et qu'elles bloquent ces modules chauffants 30, 32 à l'intérieur de celui-ci lorsqu'ils sont en position. FIG. 3 shows snap-fastening fingers 40, which are elastically deformed, which are produced at the distal ends 42, that is to say the ends facing the second connection interface 12, of the side walls 20, 22 and the intermediate wall 24. Each latching finger 40 is made to extend in vertical projection from the wall that it extends, the fingers 40 carried by the side walls 20 and 22 projecting towards the intermediate wall 24 while this intermediate wall 24 has a finger detent 40 extending vertically as well to the upper side wall 20 as to the lower side wall 22. The detent finger 40 has an outer face 44, facing the second connection interface 12, which is inclined relative to vertically and an inner face, turned towards the inside of the heating compartment 6, which is substantially straight to form a clearance stop for the heating modules 30, 32 when they are inserted into the heating compartment 6 of the device. It is understood that such shapes of the fingers facilitate the spacing of the fingers 40 during the passage of the heating modules 30, 32 to the inside of the heating compartment 6 and they block these heating modules 30, 32 inside the when in position.
Tel que cela été décrit ci-dessus, le compartiment de chauffe 6 est venu de matière avec la première interface de connexion 8, qui présente une double fonction, à savoir une fonction de connexion électrique pour permettre le raccordement des modules chauffants à une source d'énergie électrique et une fonction mécanique pour fermer de façon étanche l'ouverture du conduit de l'installation de ventilation, chauffage et/ou climatisation par laquelle le dispositif de chauffage est inséré. As described above, the heating compartment 6 is integral with the first connection interface 8, which has a dual function, namely an electrical connection function to allow the connection of the heating modules to a power source. electrical energy and a mechanical function for sealing the opening of the duct of the ventilation, heating and / or air conditioning system by which the heating device is inserted.
La première interface de connexion 8 comporte une première platine 46 sensiblement plane, qui s'étend perpendiculairement aux parois du compartiment de chauffe 6, et un fourreau 48 qui s'étend longitudinalement en saillie de la première platine 46, à l'opposé du compartiment de chauffe 6 du compartiment de chauffe 2. The first connection interface 8 comprises a first substantially flat plate 46, which extends perpendicularly to the walls of the heating compartment 6, and a sleeve 48 which extends longitudinally projecting from the first plate 46, opposite the compartment heating element 6 of the heating compartment 2.
Les moyens de fixation mécanique associés à la première interface de connexion 8 sont portés par la première platine 46 qui présente à ses extrémités verticales 50 des pattes de fixation 52 (visibles sur la figure 2) dans lesquelles des trous de fixation 54 permettent la coopération de moyens de vissage avec des moyens taraudés, ici non représentés, solidaires du conduit de l'installation de ventilation, chauffage et/ou climatisation, pour la fixation mécanique du dispositif de chauffage additionnel 2 par rapport au conduit. On comprend que d'autres moyens de fixation mécanique pourront être mis en œuvre sans sortir du contexte de l'invention, par des opérations de soudage, de clinchage ou de collage par exemple. The mechanical fixing means associated with the first connection interface 8 are carried by the first plate 46 which has at its vertical ends 50 fixing lugs 52 (visible in FIG. 2) in which fixing holes 54 allow the cooperation of screwing means with tapped means, not shown here, integral with the duct of the ventilation system, heating and / or air conditioning, for the mechanical fixing of the additional heating device 2 relative to the duct. We understand that others mechanical fixing means may be implemented without departing from the context of the invention, by welding, clinching or gluing, for example.
Par ailleurs, la première platine 46 comporte sur sa face interne 56, tournée vers le compartiment de chauffe 6 du compartiment de chauffe 6, une rainure périphérique 58 (visible sur la figure 2) dans laquelle un joint peut être positionné de sorte à assurer l'étanchéité à l'air entre l'intérieur de l'installation de climatisation où s'étend le compartiment de chauffe 6 du dispositif et l'extérieur de l'installation où s'étend la première platine 46 et notamment le fourreau 48. La première interface 8 présente des fentes 60 (visibles sur la figure 2) qui s'étendent de la face interne 56 de la première platine 46, tournée vers le compartiment de chauffe 6, à la face externe 62 portant le fourreau 48. Les fentes 60 débouchent à l'intérieur du fourreau 48, dont les dimensions sont aptes à permettre la réception dans ce fourreau 48 de moyens de raccordement électrique sources, c'est-à-dire des moyens directement reliés au réseau du véhicule. Furthermore, the first plate 46 has on its inner face 56, facing the heating compartment 6 of the heating compartment 6, a peripheral groove 58 (visible in Figure 2) in which a seal can be positioned to ensure the l airtightness between the inside of the air conditioning installation where extends the heating compartment 6 of the device and the outside of the installation where extends the first plate 46 and in particular the sleeve 48. first interface 8 has slots 60 (visible in Figure 2) which extend from the inner face 56 of the first plate 46, facing the heating compartment 6, the outer face 62 carrying the sleeve 48. The slots 60 open into the sleeve 48, the dimensions of which are capable of allowing reception in this sleeve 48 of source electrical connection means, that is to say means directly connected to the network of the vehicle.
Sur la figure 3, on voit l'extrémité libre de terminaux de raccordement électriques 64, débouchant des fentes à l'intérieur du fourreau 48, qui sont aptes à coopérer avec les moyens de raccordement électrique sources lorsque ceux-ci sont emmanchés dans le fourreau 48. Les terminaux de raccordement électriques 64 sont, selon l'invention, rendus solidaires d'électrodes 66 des modules chauffants 4, tel que cela va être décrit ci-après, et ils traversent les fentes 60 (visibles sur la figure 2) pour permettre de connecter, avec des moyens de raccordement disposés d'un côté de la première interface de connexion 8, les modules chauffants 4 disposés de l'autre côté de cette première interface 8. On comprend, notamment par l'illustration de la figure 3, que les fentes 60 présentent une section définie pour recevoir et guider à travers la première interface 8 ces terminaux de raccordement électriques 64, afin qu'ils puissent d'une part être solidaires des électrodes 66 à l'intérieur du compartiment de chauffe 6 et qu'ils puissent d'autre part s'étendre dans le fourreau 48 en saillie de la face externe 62 de la première platine 46. Dans le mode de réalisation illustré, tel que cela est visible sur les figures 4 à 6, un terminal électrique 64 de raccordement au faisceau électrique du véhicule est disposé sur l'extrémité libre de chacune des électrodes 66 prolongeant les modules chauffants 4 à une extrémité proximale 67. Le terminal 64 présente une partie de fixation 68 à l'électrode 66 et une partie de raccordement 69 formée par une languette 70 qui s'étend dans le prolongement de l'électrode 66. FIG. 3 shows the free end of electrical connection terminals 64, opening slots inside the sleeve 48, which are able to cooperate with the source electrical connection means when they are fitted into the sheath. 48. The electrical connection terminals 64 are, according to the invention, made integral with the electrodes 66 of the heating modules 4, as will be described hereinafter, and they pass through the slots 60 (visible in FIG. allow to connect, with connecting means arranged on one side of the first connection interface 8, the heating modules 4 disposed on the other side of this first interface 8. It is understood, in particular by the illustration of Figure 3 , that the slots 60 have a defined section for receiving and guiding through the first interface 8 these electrical connection terminals 64, so that they can firstly be integral with the electrode s 66 inside the heating compartment 6 and that they can further extend in the sleeve 48 projecting from the outer face 62 of the first plate 46. In the illustrated embodiment, as can be seen in FIGS. 4 to 6, an electrical terminal 64 for connecting the vehicle's electrical harness is disposed on the free end of each of the electrodes 66 extending the heating modules 4 at one end. The terminal 64 has an attachment portion 68 to the electrode 66 and a connecting portion 69 formed by a tab 70 which extends in the extension of the electrode 66.
La partie de fixation 68 prend la forme d'un manchon de largeur légèrement supérieure à la largeur de l'électrode 66 (visible sur la figure 6), de manière à pouvoir entourer l'électrode 66 associée et être rendu solidaire de celle-ci par soudage ou sertissage par exemple, ou encore par clinchage ou collage. On comprendra par ailleurs que la partie de fixation 68 pourrait, sans sortir du contexte de l'invention, ne pas entourer complètement l'électrode 66 et venir en recouvrement sur l'une ou l'autre des faces de l'électrode 66, pour soudage ou par collage par exemple. Dans le mode de réalisation illustré, la forme de manchon est obtenue par pliage sur lui-même de la partie de fixation, en laissant un espace entre la paroi supérieure 72 du manchon s'étendant dans le plan de la partie de raccordement et la paroi inférieure 74 du manchon repliée sous la paroi inférieure. Le terminal 64 est soudé, ou bien serti, collé ou clinché à titre d'exemple, sur l'extrémité libre de l'électrode 66 au niveau de cette paroi inférieure 74 repliée du manchon, les figures illustrant des points d'amorce de sertissage 76 sur cette paroi inférieure 74. The fixing portion 68 takes the form of a sleeve of width slightly greater than the width of the electrode 66 (visible in FIG. 6), so as to be able to surround the associated electrode 66 and be made integral with it by welding or crimping for example, or by clinching or gluing. It will further be understood that the fixing portion 68 could, without departing from the context of the invention, not completely surround the electrode 66 and overlap on one or other of the faces of the electrode 66, for welding or gluing for example. In the illustrated embodiment, the sleeve shape is obtained by folding on itself the fixing part, leaving a space between the upper wall 72 of the sleeve extending in the plane of the connecting portion and the wall lower 74 of the sleeve folded under the bottom wall. The terminal 64 is welded, or crimped, glued or clinched by way of example, on the free end of the electrode 66 at the lower wall 74 folded of the sleeve, the figures illustrating crimping points of initiation 76 on this lower wall 74.
La partie de raccordement est reliée à la partie de fixation par une portion d'étranglement 78, et elle comporte immédiatement après cette portion d'étranglement 78 deux ailettes 80 qui s'étendent de chaque côté de la partie de raccordement en saillie radiale de manière à former une butée par épaulement au déplacement longitudinal du terminal, et qui porte la languette 70. A la jonction des ailettes 80 et de la languette 70, on prévoit des encoches 82 formant une réduction de largeur de la languette 70 à sa base. The connecting portion is connected to the attachment portion by a throttling portion 78, and immediately after this throttling portion 78 there are two fins 80 which extend on each side of the radially projecting connecting portion so as to to form a shoulder abutment to the longitudinal displacement of the terminal, and which carries the tongue 70. At the junction of the fins 80 and the tongue 70, there are provided notches 82 forming a reduction in width of the tongue 70 at its base.
La languette 70 présente ici une section transversale sensiblement rectangulaire, de forme complémentaire de celle des fentes d'insertion 60 réalisées dans la première interface 8. On peut observer, notamment sur la figure 7, que l'extrémité libre 71 de cette languette 70 présente un léger biseau, notamment pour faciliter son insertion dans la fente 60 correspondante. The tongue 70 here has a substantially rectangular cross section, of shape complementary to that of the insertion slots 60 realized in the first interface 8. It can be seen, in particular in Figure 7, that the free end 71 of the tongue 70 has a slight bevel, especially to facilitate its insertion into the slot 60 corresponding.
La languette 70 comporte également un élément d'encliquetage à déformation élastique, réalisé par une lame 84 articulée à une de ses extrémités sur la languette 70, autour d'un axe transversal à la languette 70. La lame 84 est conformée, par exemple par un poinçonnage, pour prendre une position de repos dans laquelle son extrémité libre 86 s'étend en saillie du plan longitudinal et transversal défini par la languette 70. On peut observer que la lame 84 est agencée de sorte que son extrémité libre est positionnée en arrière de son extrémité articulée la languette 70, c'est-à-dire que l'extrémité libre est plus proche de la partie de fixation du terminal 64. The tongue 70 also comprises a detent element with elastic deformation, made by a blade 84 articulated at one of its ends on the tongue 70, about an axis transverse to the tongue 70. The blade 84 is shaped, for example by punching, to take a rest position in which its free end 86 extends projecting from the longitudinal and transverse plane defined by the tongue 70. It can be seen that the blade 84 is arranged so that its free end is positioned behind its hinged end tongue 70, that is to say that the free end is closer to the fixing portion of the terminal 64.
Dans le mode de réalisation illustré, les terminaux de raccordement 64 sont portés par les électrodes 66 et les fentes 60 réalisées dans la première interface 8 débouchent de chaque côté de la première platine 46 pour que les terminaux 64, en prise avec les électrodes 66 du côté de la face interne 56 de la première platine 46, puissent traverser la première interface de connexion 8 et être en prise avec les moyens de raccordement électriques reliés au réseau électrique du véhicule du côté de la face externe 62 de la première platine 46. On comprend que la première interface de connexion 8 comporte des fentes d'insertion 60 dont la section transversale est complémentaire de celle des languettes 70 des terminaux 64. Par ailleurs, la première interface de connexion 8 comporte avantageusement des logements 88 coopérants avec les éléments d'encliquetage 84 portés par les terminaux 64. De la sorte, les éléments d'encliquetage 84 à déformation élastique sont aptes à passer d'une position escamotée lors de l'insertion de la partie d'extrémité libre du terminal 64 dans la fente correspondante 60 de la première interface de connexion 8 et une position déployée dans le logement 88 correspondant lorsque le module chauffant 4 est en position par rapport au compartiment de chauffe 6 et à la première interface de connexion 8. Sur la figure 8, on a illustré deux fentes d'insertion 60 vues depuis la face externe 62 de la première interface de connexion 8. Un logement de réception 88 d'un élément d'encliquetage 84 est formé au voisinage de chacune des fentes d'insertion 60, ici verticalement sous ces fentes 60. Le logement 86 est creusé dans l'épaisseur de la première interface de connexion 8, depuis la face externe de celui-ci, et il prend ainsi une forme de cavité ouverte sur la fente d'insertion 60 correspondante. In the illustrated embodiment, the connection terminals 64 are carried by the electrodes 66 and the slots 60 made in the first interface 8 open on each side of the first plate 46 so that the terminals 64, in engagement with the electrodes 66 of the side of the inner face 56 of the first plate 46, can pass through the first connection interface 8 and be in engagement with the electrical connection means connected to the vehicle electrical network on the side of the outer face 62 of the first plate 46. On it understands that the first connection interface 8 comprises insertion slots 60 whose cross section is complementary to that of the tabs 70 of the terminals 64. Moreover, the first connection interface 8 advantageously comprises housing 88 cooperating with the elements of snap 84 carried by the terminals 64. In this way, the snap elements 84 with elastic deformation nt able to pass from a retracted position during the insertion of the free end portion of the terminal 64 into the corresponding slot 60 of the first connection interface 8 and a deployed position in the corresponding housing 88 when the heating module 4 is in position relative to the heating compartment 6 and the first connection interface 8. In FIG. 8, two insertion slots 60 are seen from the outer face 62 of the first connection interface 8. A receiving housing 88 of a detent element 84 is formed in the vicinity of each of the slots of FIG. 60, here vertically under these slots 60. The housing 86 is hollowed out in the thickness of the first connection interface 8, from the outer face thereof, and thus takes a shape of open cavity on the slot d corresponding insertion 60.
La cavité formant le logement 88 est délimitée verticalement à l'opposé de la fente 60 par une paroi de fond 90, délimitée transversalement par deux parois latérales 92 distantes d'une largeur sensiblement égale à la largeur de la lame formant l'élément d'encliquetage 84, et elle est délimité longitudinalement du côté de la face interne 56 de la première interface de connexion 8 par une paroi verticale 94 tandis qu'elle est ouverte et débouche de l'autre côté sur la face externe 62 de la première interface de connexion 8. Sur la figure 9, on a illustré la coopération de l'élément d'encliquetage 84 et du logement 88 lorsque le module chauffant 4 est dans sa position finale dans le compartiment de chauffe 6. Lors de l'insertion de la languette 70 du terminal 64 dans la fente 60, l'extrémité libre 86 de l'élément d'encliquetage 84, en arrière de l'extrémité articulée, est amenée dans le plan de la languette 70, dans une position escamotée, sous l'effet de la contrainte verticale exercée par les parois délimitant la fente 60. Lorsque le module chauffant 4 est dans sa position finale souhaitée par rapport au compartiment de chauffe 6, la languette 70 est insérée au maximum dans la fente 60, les ailettes 80 formant contre la face interne 56 de la première platine 46 une butée longitudinale à l'avancement du terminal 64. Et dans cette position finale, la lame de l'élément d'encliquetage 84 est disposée au droit du logement 88 aménagé sur le chemin de la fente 60. La lame 84 n'est plus contrainte verticalement et peut reprendre sa position déployée initiale en saillie du plan de la languette 70. La languette 70 est alors immobilisée longitudinalement, dans un sens par la butée des ailettes 80 contre la première interface de connexion 8, et dans l'autre sens par la butée de l'extrémité libre 86 des éléments d'encliquetage 84 contre la paroi verticale 94 du logement 88. On comprend que si un module chauffant 4 devait être dégagé de la première interface de connexion 8, il conviendrait d'utiliser un outil pour contraindre l'élément d'encliquetage 84 à prendre sa position escamotée, en accédant au logement par le côté de la face externe 62 de la première interface de connexion 8. The cavity forming the housing 88 is defined vertically opposite the slot 60 by a bottom wall 90 delimited transversely by two side walls 92 spaced apart by a width substantially equal to the width of the blade forming the element. snap 84, and it is delimited longitudinally on the side of the inner face 56 of the first connection interface 8 by a vertical wall 94 while it is open and opens on the other side on the outer face 62 of the first interface of connection 8. In Figure 9, there is illustrated the cooperation of the detent element 84 and the housing 88 when the heating module 4 is in its final position in the heating compartment 6. When inserting the tongue 70 of the terminal 64 in the slot 60, the free end 86 of the detent element 84, behind the articulated end, is brought into the plane of the tongue 70, in a retracted position, under the effect d e the vertical stress exerted by the walls delimiting the slot 60. When the heating module 4 is in its desired final position with respect to the heating compartment 6, the tongue 70 is inserted as far as possible into the slot 60, the fins 80 forming against the internal face 56 of the first plate 46 a longitudinal stop at the advancement of the terminal 64. And in this final position, the blade of the detent element 84 is disposed at the right of the housing 88 arranged on the path of the slot 60 The blade 84 is no longer constrained vertically and can return to its initial deployed position projecting from the plane of the tongue 70. The tongue 70 is then immobilized longitudinally, in one direction by the stop of the fins 80 against the first connecting interface 8 , and in the other direction by the abutment of the free end 86 of the elements detent 84 against the vertical wall 94 of the housing 88. It will be understood that if a heating module 4 were to be disengaged from the first connection interface 8, a tool should be used to constrain the detent element 84 to be taken. its retracted position, accessing the housing by the side of the outer face 62 of the first connection interface 8.
La deuxième interface 12 comporte une deuxième platine 96 qui s'étend transversalement aux parois longitudinales du compartiment de chauffe 6, et sensiblement parallèlement à la première platine 46 de la première interface de connexion 8, et elle comporte en outre une patte de guidage 98 disposée à une extrémité verticale de la deuxième platine 96. La deuxième platine 96 présente une partie pleine 100 à l'extrémité opposée à la patte de guidage 98, pour le support de la barrette 1 6, et elle présente une partie centrale munie d'une ouverture 102 donnant accès aux deux logements 26 et 28 à l'intérieur du compartiment de chauffe 6. Il importe que l'ouverture réalisée dans la deuxième platine 96 présente une hauteur, dans la direction verticale depuis la patte de guidage 98 jusqu'à la partie pleine 100, au moins égale à la hauteur, dans cette même direction, des logements formés dans le compartiment de chauffe 6, pour permettre l'insertion des modules chauffants 4 dans le compartiment de chauffe 6 par cette ouverture 102, opposée à la première interface de connexion 8. On va maintenant décrire le montage du dispositif de chauffage additionnelThe second interface 12 comprises a second plate 96 which extends transversely to the longitudinal walls of the heating compartment 6, and substantially parallel to the first plate 46 of the first connection interface 8, and it further comprises a guide tab 98 arranged at a vertical end of the second plate 96. The second plate 96 has a solid portion 100 at the end opposite to the guide tab 98, for the support of the bar 1 6, and it has a central portion provided with a opening 102 giving access to the two housings 26 and 28 inside the heating compartment 6. It is important that the opening made in the second plate 96 has a height, in the vertical direction from the guide tab 98 to the 100 full part, at least equal to the height in the same direction, the housing formed in the heating compartment 6, to allow the insertion of heating modules 4 in the heating compartment 6 through this opening 102, opposite to the first connection interface 8. The installation of the additional heating device will now be described.
2, et notamment la coopération des terminaux électriques de raccordement 64 et des fentes 60 de la première interface de connexion 8 lorsque les modules chauffants 4 sont montés dans le compartiment de chauffe 6. 2, and in particular the cooperation of the electrical connection terminals 64 and the slots 60 of the first connection interface 8 when the heating modules 4 are mounted in the heating compartment 6.
On réalise dans un premier temps le sertissage, le soudage, le clinchage ou le soudage des terminaux 64 sur les électrodes 66. Le manchon est disposé autour de l'extrémité libre de l'électrode 66, en étant enfoncé jusqu'à ce que l'extrémité libre de l'électrode 66 entre en butée avec le fond du manchon. Dans cette position de butée, le terminal 64 est rendu solidaire de l'électrode 66. On insère ensuite les modules chauffants 4 dans les logements appropriés 26 et 28 à l'intérieur du compartiment de chauffe 6. Pour cela, on insère selon l'invention les modules chauffants 4 par l'ouverture 102 formée dans la deuxième interface de connexion 12, les terminaux de raccordement 64 en premier, et on fait glisser les modules chauffants 4 en translation vers la première interface de connexion 8. Au passage, les parois des modules chauffants 4 repoussent les doigts d'encliquetage 40 vers l'extérieur du logement que ces modules chauffants 4 viennent occuper. L'insertion du deuxième module chauffant 32 dans le deuxième logement 28 génère le déplacement de la lame élastique 36 dans le plan de la paroi intermédiaire 24, et le bossage 38 de l'extrémité libre de la lame 36 pousse le premier module chauffant 30 dans le premier logement 26 contre la paroi latérale dite supérieure 20. En fin d'insertion, la languette 70 de chaque terminal 64 pénètre dans la fente 60 qui lui est associée de manière à ressortir de l'autre côté de la première interface de connexion 8, à l'intérieur du fourreau 48. Les éléments d'encliquetage 84 portés par chaque terminal 64 prennent une position de verrouillage dans les logements 88 correspondants réalisés dans la première interface de connexion 8 et cela fige la position des modules chauffants 4. Dans cette position, la paroi d'extrémité distale des modules chauffants 4, c'est-à-dire celle tournée vers la deuxième interface de connexion 12, est bloquée par les doigts d'encliquetage 40 qui ont repris leur position d'origine par rappel élastique lorsque les parois des modules chauffants 4 ne les contraignaient plus verticalement. On assure ainsi un plaquage des modules chauffants 4 contre la première interface de connexion 8 et la position correcte des terminaux de raccordement 64 pour qu'ils dépassent suffisamment du côté de la face externe de la première interface de connexion 8 et qu'ils puissent être correctement raccordés aux moyens de raccordement électrique sources. Et il convient de noter que l'on assure cet effort longitudinal sur les modules chauffants 4 sans l'ajout de ressorts disposés entre la deuxième interface de connexion 1 2 et les modules chauffants 4. L'extrémité distale de ces modules chauffants 4 s'étend sensiblement au droit de la face interne de la deuxième interface de connexion 12, de sorte que l'encombrement longitudinal du dispositif de chauffage additionnel 2, pour des modules chauffants 2 d'une longueur donnée, est amélioré. On comprend qu'à l'inverse, pour un encombrement longitudinal donné du dispositif de chauffage additionnel 2, qui doit s'adapter aux dimensions du conduit de l'installation de ventilation, chauffage et/ou climatisation dans lequel il est logé, on pourra augmenter la longueur des modules chauffants 4 puisqu'aucun dégagement n'est nécessaire entre la deuxième interface de connexion 12 et l'extrémité distale des modules chauffants 4. Ce gain de place longitudinal pour agrandir la portée longitudinale des modules chauffants 4 est aussi réalisé par le recouvrement de l'extrémité libre de l'électrode 66 par le terminal de raccordement 64. Le dégagement nécessaire entre la première interface de connexion 8 et l'extrémité proximale des modules chauffants 4 est limité à la longueur de l'extrémité en saillie de l'électrode 66, et il n'est plus nécessaire de prévoir un dégagement supplémentaire pour aménager des pattes de raccordement faisant saillie de la première interface de connexion 8. The crimping, welding, clinching or welding of the terminals 64 on the electrodes 66 is first carried out. The sleeve is placed around the free end of the electrode 66, being pressed until the free end of the electrode 66 abuts the bottom of the sleeve. In this abutment position, the terminal 64 is made integral with the electrode 66. The heating modules 4 are then inserted into the appropriate housings 26 and 28 inside the heating compartment 6. For this purpose, the heating modules 4 are inserted according to the invention 4 through the opening 102 formed in the second connection interface 12. , the connection terminals 64 first, and sliding the heating modules 4 in translation to the first connection interface 8. In passing, the walls of the heating modules 4 push the latching fingers 40 towards the outside of the housing that these heating modules 4 come to occupy. The insertion of the second heating module 32 in the second housing 28 generates the displacement of the elastic blade 36 in the plane of the intermediate wall 24, and the boss 38 of the free end of the blade 36 pushes the first heating module 30 into the first housing 26 against the so-called upper side wall 20. At the end of insertion, the tongue 70 of each terminal 64 enters the slot 60 associated with it so as to emerge on the other side of the first connection interface 8 , inside the sleeve 48. The latching elements 84 carried by each terminal 64 take a locking position in the corresponding housings 88 made in the first connection interface 8 and this freezes the position of the heating modules 4. In this embodiment, FIG. position, the distal end wall of the heating modules 4, that is to say that facing the second connection interface 12, is blocked by the latching fingers 4 0 which have returned to their original position by elastic return when the walls of the heating modules 4 no longer constrained them vertically. This ensures a plating of the heating modules 4 against the first connection interface 8 and the correct position of the connection terminals 64 so that they sufficiently exceed the side of the outer face of the first connection interface 8 and they can be correctly connected to the source electrical connection means. And it should be noted that this longitudinal force is provided on the heating modules 4 without the addition of springs arranged between the second connection interface 1 2 and the heating modules 4. The distal end of these heating modules 4 s' extends substantially to the right of the inner face of the second connection interface 12, so that the longitudinal dimension of the additional heating device 2 for heating modules 2 of a given length is improved. We understand that Conversely, for a given longitudinal dimension of the additional heating device 2, which must adapt to the dimensions of the duct of the ventilation system, heating and / or air conditioning in which it is housed, it will be possible to increase the length of the modules. 4 since there is no clearance between the second connection interface 12 and the distal end of the heating modules 4. This longitudinal space saving to enlarge the longitudinal span of the heating modules 4 is also achieved by the recovery of the free end of the electrode 66 by the connection terminal 64. The clearance required between the first connection interface 8 and the proximal end of the heating modules 4 is limited to the length of the projecting end of the electrode 66, and it is no longer necessary to provide additional clearance to provide connecting tabs projecting from the first interface of connection ion 8.
Le dispositif de chauffage additionnel 2 du dispositif de chauffage est ensuite inséré dans un conduit de l'installation de chauffage-ventilation et/ou climatisation, par insertion initiale de la deuxième interface de connexion 12 dans une ouverture réalisée dans ce conduit. On fait coopérer les moyens de guidage portés par la deuxième interface de connexion 12 avec des moyens de guidage complémentaires portés par le conduit, pour amener la deuxième interface de connexion 12 et la première interface de connexion 8 respectivement contre des moyens de fixation portés par le conduit. La première interface de connexion 8 est solidarisée au conduit par vissage, tandis que la deuxième interface de connexion 12 est plaquée contre la paroi du conduit, bloquée en position par des ergots d'indexage disposés en saillie de cette paroi. On pourra prévoir que la deuxième interface de connexion 12 est avantageusement emboîtée à force dans ou autour d'un manchon complémentaire de la forme femelle de l'ouverture de la deuxième interface de connexion 12. De la sorte, il est notable que la deuxième interface de connexion 12 permet d'une part la tenue des modules chauffants 4 dans le dispositif de chauffage additionnel 2 et d'autre part la mise en position du dispositif de chauffage additionnel 2 dans le conduit de l'installation. Les extrémités des terminaux de raccordement, c'est-à-dire les languettes 70 faisant saillie de la face externe de la première interface de connexion 8 au centre du fourreau 48, sont ensuite raccordés au réseau électrique du véhicule. La gestion de commande du dispositif de chauffage additionnel est, dans le cas illustré, localisée ailleurs sur le véhicule, par exemple dans un calculateur électronique d'habitacle. Toutefois, on pourrait envisager d'intégrer un module de commande dans et/ou sur la première interface de connexion. The additional heating device 2 of the heating device is then inserted into a duct of the heating-ventilation and / or air-conditioning installation, by initial insertion of the second connection interface 12 into an opening made in this duct. The guide means carried by the second connection interface 12 are made to cooperate with complementary guiding means carried by the conduit, in order to bring the second connection interface 12 and the first connection interface 8 respectively against fixing means carried by the leads. The first connection interface 8 is secured to the conduit by screwing, while the second connection interface 12 is pressed against the wall of the conduit, locked in position by indexing lugs arranged projecting from this wall. It can be provided that the second connection interface 12 is advantageously nested by force in or around a sleeve complementary to the female shape of the opening of the second connection interface 12. In this way, it is notable that the second interface connection 12 allows on the one hand the holding of the heating modules 4 in the additional heating device 2 and secondly the positioning of the additional heating device 2 in the conduit of the installation. The ends of the connection terminals, that is to say the tabs 70 projecting from the outer face of the first connection interface 8 in the center of the sleeve 48, are then connected to the vehicle electrical network. The control of the additional heating device is, in the illustrated case, located elsewhere on the vehicle, for example in an electronic cockpit computer. However, one could consider integrating a control module in and / or on the first connection interface.
La description qui précède explique clairement comment l'invention permet d'atteindre les objectifs qu'elle s'est fixés et notamment de proposer un dispositif de chauffage de type électrique apte à être disposé en travers d'un conduit d'une installation de ventilation, chauffage et/ou climatisation d'un véhicule automobile, pour permettre la diffusion de chaleur par excitation électrique de modules chauffants portés par ou logés dans un dispositif de chauffage additionnel, et dans lequel on s'assure du positionnement correct des moyens de raccordement électrique des modules chauffants avec une source électrique du véhicule. Il a été particulièrement décrit un mode de réalisation où les moyens d'encliquetage pour s'assurer de ce positionnement correct étaient portés par des terminaux de raccordement emmanchés sur les extrémités libres des électrodes, mais on comprendra que ces moyens d'encliquetage pourraient être portés par une pièce distincte du terminal, la connexion électrique pouvant alors être réalisée comme dans l'état de la technique par des broches de connexion en saillie de la première interface de connexion et venant au contact dans le compartiment de chauffe des électrodes. The foregoing description clearly explains how the invention makes it possible to achieve the objectives that it has set itself and in particular to propose an electric type heating device that can be arranged across a duct of a ventilation installation. , heating and / or conditioning of a motor vehicle, to allow the diffusion of heat by electrical excitation of heating modules carried by or housed in an additional heating device, and in which the correct positioning of the electrical connection means is ensured; heating modules with an electrical source of the vehicle. It has been particularly described an embodiment where the latching means to ensure this correct positioning were carried by connection terminals fitted on the free ends of the electrodes, but it will be understood that these latching means could be worn. by a separate part of the terminal, the electrical connection can then be performed as in the state of the art by connection pins projecting from the first connection interface and coming into contact in the electrode heating compartment.

Claims

REVENDICATIONS
1 . Dispositif de chauffage additionnel électrique pour le chauffage d'un flux d'air traversant notamment un conduit d'une installation de ventilation, chauffage et/ou climatisation d'un véhicule automobile, dans lequel un boîtier est apte à porter des modules chauffants (4) par diffusion de chaleur sous l'effet d'un potentiel électrique, ledit boîtier comportant au moins un compartiment de chauffe (6) permettant la réception d'au moins un module chauffant (4) s'étendant longitudinalement et une première interface de connexion (8) qui permet la liaison du au moins un module chauffant (4) à une alimentation électrique source du véhicule, chaque module chauffant (4) étant prolongé longitudinalement par une extrémité libre d'électrode (66) apte à être reliée à ladite source électrique au voisinage de ladite première interface de connexion (8), caractérisé en ce que la première interface de connexion (8) présente au moins un logement (88) de réception d'un moyen de fixation (64) rendu solidaire d'un module chauffant (4), ledit moyen de fixation (64) comportant un élément d'encliquetage (84) à déformation élastique apte à prendre une position escamotée lors de l'insertion de l'extrémité libre de l'électrode (66) dans la première interface de connexion (8) et une position déployée dans ledit logement (88) lorsque le module chauffant (4) est en position par rapport à la première interface de connexion (8). 1. Additional electric heating device for heating a flow of air passing through including a duct of a ventilation system, heating and / or air conditioning of a motor vehicle, wherein a housing is able to carry heating modules (4 ) by diffusion of heat under the effect of an electrical potential, said housing comprising at least one heating compartment (6) for receiving at least one heating module (4) extending longitudinally and a first connection interface (8) which allows the connection of the at least one heating module (4) to a source power source of the vehicle, each heating module (4) being extended longitudinally by an electrode free end (66) adapted to be connected to said source electrical connection in the vicinity of said first connection interface (8), characterized in that the first connection interface (8) has at least one housing (88) for receiving a connection means fastening (64) made integral with a heating module (4), said fixing means (64) comprising a detent element (84) with elastic deformation able to assume a retracted position during the insertion of the free end of the electrode (66) in the first connection interface (8) and a position deployed in said housing (88) when the heating module (4) is in position relative to the first connection interface (8).
2. Dispositif de chauffage selon la revendication 1 , caractérisé en ce que le logement (88) est creusé dans l'épaisseur de la première interface de connexion (8) de manière à ce qu'une paroi de cette interface (8) forme une paroi (94) du logement (88) faisant butée au dégagement de l'élément d'encliquetage (84) lorsque celui-ci est en position déployée dans le logement (88). 2. Heating device according to claim 1, characterized in that the housing (88) is hollowed out in the thickness of the first connection interface (8) so that a wall of this interface (8) forms a wall (94) of the housing (88) abutting the release of the detent element (84) when it is in the extended position in the housing (88).
3. Dispositif de chauffage selon l'une des revendications 1 ou 2, caractérisé en ce que le moyen de fixation (64) est rapporté sur l'extrémité libre de l'électrode (66), et en ce que le logement (88) de réception du moyen de fixation (64) débouche dans une fente (60) d'insertion de cette extrémité libre de l'électrode (66) dans la première interface de connexion (8). 3. Heating device according to one of claims 1 or 2, characterized in that the fastening means (64) is attached to the free end of the electrode (66), and in that the housing (88) receiving means of the fastening means (64) opens into a slot (60) for insertion of this free end of the electrode (66) into the first connection interface (8).
4. Dispositif de chauffage selon l'une des revendications précédentes, caractérisé en ce que le moyen de fixation (64) est formé par une partie d'extrémité libre (70) d'un terminal de raccordement électrique (64) qui est directement raccordé sur l'extrémité libre d'une électrode (66). 4. Heating device according to one of the preceding claims, characterized in that the fastening means (64) is formed by a free end portion (70) of an electrical connection terminal (64) which is directly connected. on the free end of an electrode (66).
5. Dispositif de chauffage selon la revendication précédente, caractérisé en ce que le terminal de raccordement électrique (64) comporte une partie de fixation (68), apte à venir en recouvrement de l'extrémité libre d'électrode (66), et une languette (70) formant ladite partie d'extrémité libre du terminal de raccordement électrique (64) apte à être insérée dans une fente d'insertion (60) de la première interface de connexion (8). 5. Heating device according to the preceding claim, characterized in that the electrical connection terminal (64) comprises a fixing portion (68) adapted to overlap the free end electrode (66), and a tongue (70) forming said free end portion of the electrical connection terminal (64) adapted to be inserted into an insertion slot (60) of the first connection interface (8).
6. Dispositif de chauffage selon la revendication précédente, caractérisé en ce que la partie de fixation (68) du terminal est rendue solidaire de l'extrémité libre de l'électrode (66). 6. Heating device according to the preceding claim, characterized in that the fixing portion (68) of the terminal is secured to the free end of the electrode (66).
7. Dispositif de chauffage selon l'une des revendications 5 ou 6, caractérisé en ce que la languette (70) présente une section de forme rectangulaire, complémentaire de la forme rectangulaire de la section de la fente d'insertion (60) correspondante réalisée dans la première interface de connexion (8). 7. Heating device according to one of claims 5 or 6, characterized in that the tongue (70) has a section of rectangular shape, complementary to the rectangular shape of the section of the corresponding insertion slot (60) made in the first connection interface (8).
8. Dispositif de chauffage selon l'une des revendications 5 à 7, caractérisé en ce que l'élément d'encliquetage (84) est porté par la languette (70) en prenant la forme d'une lame de déformation élastique dont l'extrémité libre (86) s'étend, dans une position de repos, en saillie du plan principal défini par la languette (70), l'extrémité libre de la lame étant positionnée en arrière de son extrémité solidaire de la languette (70), c'est-à-dire plus proche de la partie de fixation (68) du terminal (64). 8. Heating device according to one of claims 5 to 7, characterized in that the detent element (84) is carried by the tongue (70) in the form of an elastic deformation blade of which the free end (86) extends, in a rest position, projecting from the main plane defined by the tongue (70), the free end of the blade being positioned behind its end integral with the tongue (70), that is, closer to the attachment portion (68) of the terminal (64).
9. Dispositif de chauffage selon l'une des revendications 5 à 8, caractérisé en ce que le terminal de raccordement électrique (64) traverse la première interface de connexion (8), la fente d'insertion (60) réalisée dans la première interface (8) à cet effet débouchant sur l'une et l'autre des faces de la première interface (8) perpendiculaires au module chauffant (4). 9. Heating device according to one of claims 5 to 8, characterized in that the electrical connection terminal (64) passes through the first connection interface (8), the insertion slot (60) formed in the first interface (8) for this purpose opening on the one and the other of the faces of the first interface (8) perpendicular to the heating module (4).
10. Dispositif de chauffage selon l'une des revendications précédentes, caractérisé en ce que le boîtier comporte un compartiment de chauffe (6) porteur des modules chauffants (4) et deux interfaces de connexion (8, 12) disposées aux extrémités longitudinales dudit compartiment de chauffe (6), ledit boîtier étant formé d'une seule et unique pièce, les modules chauffants (4) étant insérés dans le compartiment de chauffe (6) par une ouverture d'accès (102) réalisé dans la deuxième interface de connexion (12) disposée à l'opposé de la première interface de connexion (8) apte à être traversée par au moins un terminal de raccordement et comportant le au moins un logement de réception (88) dudit élément d'encliquetage (84). 10. Heating device according to one of the preceding claims, characterized in that the housing comprises a heating compartment (6) carrying the heating modules (4) and two connection interfaces (8, 12) arranged at the longitudinal ends of said compartment for heating (6), said housing being formed of a single piece, the heating modules (4) being inserted into the heating compartment (6) via an access opening (102) made in the second connection interface (12) disposed opposite the first connection interface (8) adapted to be traversed by at least one connecting terminal and having the at least one receiving housing (88) of said detent element (84).
1 1 . installation de ventilation, chauffage et/ou climatisation comportant un dispositif de chauffage selon l'une des revendications 1 à 10. 1 1. ventilation, heating and / or air conditioning system comprising a heating device according to one of claims 1 to 10.
PCT/EP2016/052726 2015-02-10 2016-02-09 Electric heating device WO2016128399A1 (en)

Applications Claiming Priority (2)

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FR1551043 2015-02-10
FR1551043A FR3032389B1 (en) 2015-02-10 2015-02-10 ELECTRICAL HEATING DEVICE

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CN110500772A (en) * 2019-08-23 2019-11-26 内蒙古航天金岗重工有限公司 A kind of electrically heated boiler and its control method with control system

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FR3056067B1 (en) * 2016-09-09 2020-11-13 Valeo Systemes Thermiques ELECTRIC HEATING DEVICE
FR3083951A1 (en) * 2018-07-13 2020-01-17 Valeo Systemes Thermiques HEATING ELEMENT AND INSERT FOR VEHICLE ELECTRIC HEATING DEVICE

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EP1502784A1 (en) * 2003-07-31 2005-02-02 Behr France S.A.R.L. Electric heating device
FR2895204A1 (en) 2005-12-21 2007-06-22 Valeo Systemes Thermiques OPTIMIZATION OF A HEATING DEVICE
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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
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FR3032389A1 (en) 2016-08-12

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