WO2019002723A1 - Frame of an electric heating device comprising guide blocks with an inclined surface - Google Patents

Frame of an electric heating device comprising guide blocks with an inclined surface Download PDF

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Publication number
WO2019002723A1
WO2019002723A1 PCT/FR2018/051476 FR2018051476W WO2019002723A1 WO 2019002723 A1 WO2019002723 A1 WO 2019002723A1 FR 2018051476 W FR2018051476 W FR 2018051476W WO 2019002723 A1 WO2019002723 A1 WO 2019002723A1
Authority
WO
WIPO (PCT)
Prior art keywords
guide
heating element
housing
end edge
longitudinal
Prior art date
Application number
PCT/FR2018/051476
Other languages
French (fr)
Other versions
WO2019002723A9 (en
Inventor
Pascal FOURGOUS
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 WO2019002723A1 publication Critical patent/WO2019002723A1/en
Publication of WO2019002723A9 publication Critical patent/WO2019002723A9/en

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • 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
    • 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
    • F24H3/0476—Means for putting the electric heaters in the frame under strain, e.g. with springs

Definitions

  • the invention relates to electric heating devices, especially for a ventilation system, heating and / or air conditioning of a motor vehicle.
  • Heating of the air intended for heating the passenger compartment of a motor vehicle with a heat engine, as well as demisting and defrosting of the glazed surfaces, is ensured by heat exchange between a flow of air and a liquid of cooling of the heat engine circulating in a heat exchanger.
  • Such an additional electric heating device generally comprises a frame having a heating body comprising a plurality of parallel conductive plates between which heating resistive elements are mounted, for example positive temperature coefficient (PTC) resistors, and radiant elements increasing the heat exchange surface with the flow of air passing through the electric heating device.
  • PTC positive temperature coefficient
  • Electric heating devices are known in which, the housing, defined by walls, comprises plastic deformation means arranged projecting from these walls. These plastic deformation means make it possible to plastically constrain and deform each heating element in the direction of the opposite wall of the housing, in particular when they are inserted into the housing. These plastic deformation means make it possible to press the heating elements into housing while eliminating elastic member exerting elastic restoring forces on the heating elements that are likely to break.
  • the insertion of the heating elements in the heating body being done by a robot
  • the meeting of the heating elements with the plastic deformation means has the consequence of considerably increasing the insertion forces.
  • the sensors equipping the robot recurrently detect that the increase in insertion forces corresponds to an abutment of the heating elements in the heating body. For security reasons, this stop detection forces the robot to stop, so that verification by an operator is performed. Stopping the robot and verification by the operator interrupts the production line, which generates a waste of time and cost to manufacture.
  • the invention aims to provide a solution to keep the production line in operation during the insertion of the heating elements in the context of the electric heating device.
  • the invention proposes for this purpose a frame of a device for electric heating of a flow of air flowing inside a ventilation, heating and / or air conditioning system of a motor vehicle, said frame comprising at least one heating compartment having at least one housing for receiving a heating element, the housing being defined by two longitudinal walls transversely delimiting an insertion path for the heating element, each longitudinal wall comprising an inner face facing the insertion path, each inner face being delimited by two longitudinally extending end edges, with a first end edge located opposite a second end edge, characterized in that at least one guiding stud extends projecting from at least one of the internal faces, said guiding stud comprising an inclined guide surface intended to come into contact with the heating element.
  • said angled guide surface is arranged to guide the heating element towards one of the end edges defining the inner face from which said guide pad extends.
  • the inclined surface is arranged to guide the heating element only in the direction of one of the end edges. By this is meant that no other component of the guidance direction of the heating element is possible.
  • the inclined guide surface of the guide pad forms a right angle with the longitudinal wall from which the guide pad extends.
  • the inclined guide surface has a normal extending in a plane parallel to the longitudinal wall from which the guide pad extends. The normal is a line orthogonal to the tangent plane of the inclined surface.
  • the guide pad is located near a first end edge of the inner face, the inclined surface then allows to guide the heating element towards a second end edge, the second end edge being located opposite the first end edge on the same inner face.
  • the guide pad extends from one of the end edges of the inner face.
  • a portion of the guide pad is located inside the insertion path of the heating element, said portion of the guide pad being intended to come into contact with the heating element.
  • the portion of the guide pin, located in the insertion path of the heating element keeps the heating element in its housing, once it has been inserted.
  • the invention also makes it possible to dispense with elastic elements that can break.
  • the part located inside the insertion path comprises the inclined guide surface.
  • the guide pad comprises at least four surfaces extending perpendicularly to the inner face from which the stud extends.
  • the inclined guide surface is oriented so that the guide pad has a dimension increasing in a direction of insertion of the heating element in the housing.
  • the inclined guide surface accompanies the heating element towards the end edge.
  • the direction of insertion of the heating element into the housing extends from a connection interface to a bottom wall of the housing and in the direction of insertion.
  • the inclined guide surface of the guide pad has a dimension increasing linearly in the direction of insertion of the heating element in the housing.
  • the inclined guide surface gradually and linearly accompanies the heating element towards the opposite end edge.
  • the inclined guide surface has a slope in a rectilinear direction.
  • the inclined guide surface of a guide pad comprises several successive slopes. Among the successive slopes, two adjacent slopes do not have the same angle of inclination.
  • the guide pad comprises at least one longitudinal flange extending parallel to the end edges of the inner face from which the guide pad extends. A longitudinal flange corresponds to an edge of the guide pin.
  • the inclined guide surface has an inclination angle of less than 45 degrees.
  • the angle of inclination is measured with respect to a longitudinal flange of the guide pin. This angle of inclination thus represents the slope that follows the heating element during its insertion. In the case of succession of slopes, each of the slopes has an inclination angle of less than 45 degrees.
  • the inclined guide surface of the guide pad forms an inclination angle of between 15 and 25 degrees with the longitudinal flange of the guide pad.
  • the guide pads are arranged alternately on the first and second longitudinal wall while also being alternately arranged near the first end edge or the second end edge.
  • the guide pads arranged according to this arrangement have an inclined surface having a slope increasing in the direction of insertion of the heating element in the housing.
  • the median longitudinal axis extends parallel to the two end edges of the same internal face and equidistant from them.
  • the median longitudinal axis divides the longitudinal wall into two equal parts, a first portion comprising the first end edge and a second portion comprising the second end edge, the end edges extending according to the length of the longitudinal wall.
  • the same longitudinal wall comprises at least two guide pads successively arranged one by one according to the direction of insertion:
  • a first guide pad located between the first end edge and the longitudinal central axis of the longitudinal wall
  • a second guide pin is located between the second end edge and the median longitudinal axis of the same longitudinal wall.
  • a third guide pad it is located in this arrangement in the area opposite to the area where the second pad is located.
  • the frame comprises ribs vertically defining the insertion path for the heating element, the ribs extending in a plane transverse to the longitudinal walls, and at least one guide pad is arranged, in the direction of insertion, in alternation with the ribs, such that a guide pad is located in an area defined between the first end edge and a median longitudinal axis of the inner face of a longitudinal wall and at least one of the ribs is located in an area defined between the median longitudinal axis and the second end edge of the same inner face or the inner face of the opposite longitudinal wall of the same housing.
  • the guide pads are arranged successively with the ribs alternately near the first end edge or the second end edge.
  • the ribs extend partially between two longitudinal walls forming the same housing.
  • the ribs are stiffening ribs extending at least between two longitudinal walls forming the same housing.
  • the frame comprises a plurality of guide pads formed in the same housing and, in a direction of insertion of the heating element in the housing, the guide pads have inclined guide surfaces having heights greater and greater .
  • the height of an inclined surface is understood as the distance, here measured along a vertical axis, separating the lowest point of the inclined surface and its highest point. In other words, this means that the guide pads located at the entrance of the housing have inclined surfaces slightly marked with respect to the guide pads located more towards the bottom of the housing.
  • the vertical axis is parallel to the axis followed by the flow of air passing through the heater.
  • Each guide pad comprises a flat surface facing the interior of the housing, said flat surface being parallel to the longitudinal wall from which the guide pad extends.
  • the guide pad comprises a flat face located in the extension inclined surface, according to the direction of insertion of the heating element.
  • the flat face is in the extension of the highest point of the inclined surface, according to a direction of insertion of the heating element in the housing.
  • the flat face is located downstream of the inclined surface in the direction of insertion of the heating element in the housing.
  • the flat face is upstream of the inclined surface in a direction of insertion of the heating element in the housing.
  • the guide pad comprises a first flat face located upstream of the inclined surface and a second flat face located downstream of the inclined surface, the upstream and downstream being heard in a direction of insertion of the heating element in the accommodation.
  • the invention also relates to an electric heating device comprising at least one heating element characterized in that it comprises a frame as defined above in which the at least one heating element is disposed.
  • FIG. 1 is an overall perspective view of an electric heating device according to the invention, comprising a frame in which three heating elements have been inserted and at one end of which is fixed an electrical connection interface;
  • FIG. 2 is a perspective view of the frame of the heater of FIG. 1 without the heating elements and without the connection interface;
  • FIG. 3 is a longitudinal sectional view of the frame shown in Figure 2 made according to the reference III - III showing a longitudinal wall of the frame.
  • FIG. 4 is a cross-sectional view of the frame shown in Figure 2 made according to the reference IV - IV showing a bottom of the frame;
  • FIG. 5 is a view showing an arrangement of two guide ribs arranged alternately on the side of a first end edge and a second end edge of the same longitudinal wall.
  • the longitudinal axis L corresponds to the elongation direction of the frame of the electric heating device
  • the vertical axis V perpendicular to the longitudinal axis L corresponds to the direction followed by the flow of air to be heated through the device.
  • heating and the transverse axis T is perpendicular to both the longitudinal axis L and the vertical axis V. It should be noted that the choice of designations of these axes is not limiting the orientation that can take the electric heater in its application to a motor vehicle.
  • the electric heating device ⁇ shown in FIG. 1 is intended to be housed in an air circulation duct of a heating, ventilation and / or air-conditioning installation, so as to transform the electrical energy taken from the vehicle in thermal energy restored in the air passing through this conduit.
  • the installation is not shown here, but it will be understood that a main duct of this installation conventionally comprises an opening made in the wall for the insertion of the electric heating device.
  • FIG. 1 shows an electric heating device ⁇ according to the invention, comprising a frame 3 in which heating elements 5, capable of transforming an electric current into thermal energy, have been inserted.
  • the frame 3 comprises guide pads 10 which will be described in detail below.
  • the heating elements 5 comprise means capable of exchanging heat, such as radiant elements 53 making it possible to increase the heat exchange surface, with the flow of air passing through the electric heating device. l.
  • the heating elements 5 also comprise electrodes 54 between which heating resistive elements are arranged, for example positive temperature coefficient resistors 55 (PTC), and against which the radiant elements 53 are fixed.
  • PTC positive temperature coefficient resistors 55
  • the electrodes 54 and the PTC resistors 55 make it possible to transform an electric current into thermal energy. It should be noted that the positive temperature coefficient resistors 55 can be bonded directly to the radiant elements 53.
  • the frame 3 comprises a heating compartment 30, forming a receiving housing for the heating elements 5, and the frame 3 is configured to cooperate at one of its ends with a connection interface 100.
  • the heating elements 5 are inserted into housing 7 and the connection interface 100 closes an access through which are inserted the heating elements 5 in the housing 7 of the heating compartment 30 at the same time that it allows the connection of the heating element 30.
  • electric heating device 1 to an electrical network of the vehicle allowing the electric supply of the heating elements 5.
  • the frame 3 and the heating compartment 30 have a rectangular parallelepiped shape.
  • the two main faces of the frame 3, respectively front and rear, opposite along the vertical axis V, are perforated to allow the passage of an air flow and a diffusion of heat in the duct where the electric heater 1 is installed.
  • the frame 3 comprises a median plane M corresponding to a plane passing through one half of the frame and being perpendicular to a direction followed by the flow of air flowing through the electric heating device 10. It is understood that the front and rear faces of the frame 3 extend in planes parallel to the median plane M.
  • the frame 3 comprises strips 9 arranged between each housing 7 and extending in the median plane M of the frame 3. These strips 9 participate in the stiffening of the frame 3 and include ventilation slots 90 allowing the flow of air to flow through.
  • the ventilation slots 90 are positioned one after the other along the longitudinal axis L of the heating device 1.
  • the housings 7 of the frame 3 are defined by longitudinal walls 23, 25 extending along the longitudinal axis L. More precisely, each housing is defined by two longitudinal walls 23, 25, including a first longitudinal wall 23 and a second longitudinal wall 25 transversely delimiting an insertion path for the heating element 5.
  • the insertion path is the path taken by the heating element 5 when inserted. In other words, the insertion path corresponds to a volume occupied by the heating element 5 during its insertion.
  • the spacing between the first longitudinal wall 23 and the second longitudinal wall 25 of the same housing 7 corresponds to the transverse dimension of the heating element 5, to the manufacturing sets.
  • the frame 3 comprises three housings 7 with a central housing and two lateral housings 7 located on either side of the central housing 7.
  • Each longitudinal wall 23, 25 comprises an inner face 230, 250 oriented towards the insertion path.
  • Each inner face 230, 250 is delimited by two end edges 23a, 23b, 25a, 25b extending longitudinally. More precisely, these end edges 23a, 23b, 25a, 25b correspond to edges of the longitudinal walls 23, 25.
  • a first end edge 23a is defined at opposite of a second end edge 23b (see Figure 3).
  • a second inner face 250 of the second longitudinal wall 25 there is defined a first end edge 25a located opposite a second end edge 25b.
  • each housing 7 is delimited by a bottom wall 21 extending along the transverse axis T.
  • This bottom wall 21 is situated opposite an opening 50 through which the heating elements 5 enter the heating compartment 30.
  • the heating elements 5 are inserted into the housings in a direction of insertion parallel to the longitudinal axis L. The direction of insertion is defined from the opening 50 to the bottom wall 21.
  • abutment elements 210 extend from the bottom wall 21, towards the opening 50. In other words, each abutment element 210 extends along the axis longitudinal L towards the interior of the dwelling 7.
  • Two abutment members 210 may be provided per housing 7.
  • the number of abutment members 210 in a housing 7 is equal to number of radiant elements 53 equipping the heating element 5 intended to enter this housing 7.
  • the frame 3 also comprises ribs 6, 8 delimiting vertically the insertion path of the heating element 5.
  • the ribs 6, 8 extend in a plane defined by the transverse axis T and the longitudinal axis L, also called transverse plane to the longitudinal walls 23, 25.
  • these ribs 6, 8 there are ribs extending partially between two longitudinal walls 23, 25 forming the same housing 7, called guide ribs 6 in the following. the description, and ribs extending at least between two longitudinal walls 23, 25 forming the same housing 7, called stiffening ribs 8.
  • the spacing between two ribs 6, 8, whether guide or stiffening, located on either side of the insertion path along the vertical axis V corresponds to the vertical dimension of the heating element 5, to the manufacturing sets.
  • the stiffening ribs 8 connecting the two longitudinal walls 23, 25 participate in the stiffening of the frame 3 and the heating compartment 30.
  • the role of the guide ribs 6 will be detailed later in the description.
  • the guide ribs 6 and the stiffening ribs 8 extend from an end edge 23a, 23b, 25a, 25b of the inner faces 230, 250 and projecting from the face. corresponding internal
  • the frame 3 comprises at least one guide stud 10 formed in one of the housings 7.
  • each guide stud 10 projects from the internal face 230, 250 of the longitudinal walls 23, 25.
  • each guide stud 10 comprises an inclined surface of a guide 15 intended to come into contact with the heating element 5. More specifically, the inclined guide surface 15 is arranged in such a way that, when it is inserted into the housing, the heating element comes into contact with the grounding pad. guidance 10 by first touching this inclined guide surface.
  • the inclined guide surface 15 is arranged to guide the heating element 5 towards one of the end edges 23a, 23b, 25a, 25b delimiting the internal face 230, 250 from which the stud guide 10 extends.
  • the guide surface is arranged in order to guide or deflect the heating element towards an area of the housing which opens to allow air to pass when the electric heater is operational.
  • the presence and configuration of the guide pad 10 and its inclined surface 15 allow to conform the heating element to ensure its good position, while reducing the efforts of insertion of the heating elements in the housings with respect to the insertion forces that could be generated by the presence in the prior art of the plastic deformation means forming a stop during the insertion of the heating elements 5.
  • two guide pads 10 are provided on the second longitudinal wall 25. More particularly, the two guide pads 10 originate from the second end edge 25b of the inner face 250. Given the orientation of the inclined surface 15, the guide pads 10 guide the heating element 5 towards the end edge opposite the end edge from which the guide pad 10 extends. .
  • the guide pad 10 extends from the second end edge 25b and the inclined surface 15 is oriented to deflect the heating element 5 towards the first end edge 25a.
  • the inclined surface 15 is arranged to guide the heating element 5 only towards one of the end edges 23a, 23b, 25a, 25b of the internal face 230, 250. By this is meant that no other component of the guide direction of the heating element 5 is possible.
  • the inclined surface 15 of the guide pad 10 forms a right angle with the longitudinal wall 23, 25 from which the guide pad 10 extends.
  • the normal to the inclined surface 15 extends in a plane parallel to the longitudinal wall 23, 25 from which the guide pad 10 extends. The normal corresponds to a line orthogonal to the tangent plane of the inclined surface 15.
  • FIG. 3 shows that the inclined surface 15 of the guide pad 10 is located inside the path of insertion of the heating element 5 into the housing 7.
  • the insertion path is shown schematically by the rectangle C represented in dotted lines.
  • the fact that the inclined surface 15 of the guide pad 10 is inside the insertion path makes it possible to ensure that the heating element 5 comes into contact with the inclined surface 15 when it is inserted into the housing 7.
  • the contact with the inclined surface 15 makes it possible to participate in maintaining the heating element 5 in its housing 7.
  • the guide ribs 6 and the stiffening ribs 8 line the insertion path represented by the rectangle C.
  • the guide pad 10 comprises at least four surfaces, including the inclined surface 15, all forming a right angle with the longitudinal wall 23, 25 from which the guide pad 10 extends, as well as a flat surface 10a parallel to the longitudinal wall 23, 25 facing the inside of the housing 7.
  • the flat surface 10a forms a longitudinal flange 10b with one of the surfaces forming a right angle with the longitudinal wall 23 , 25. More precisely, the longitudinal flange 10b corresponds to an edge of the guide pad 10 formed by the flat surface 10b and the surface opposite vertically to the inclined surface 15. It is noted that the guide pads 10 are positioned on the longitudinal wall 23, 25 so that the longitudinal flange 10b extends parallel to the end edges 23a, 23b, 25a, 25b of the inner face 230, 250.
  • the inclined surface 15 is oriented so that the guide pad 10 has a dimension increasing in the direction of insertion of the heating element 5 in the housing 7 to accompany the heating element 5 towards the edge of the housing. end 23a, 23b, 25a, 25b.
  • the direction of insertion of the heating element 5 in the housing 7 is understood as the direction going from the connection interface 100 to the bottom wall 21 of the housing 7, as represented by the arrow S in Figure 3.
  • the inclined surface 15 comprises several successive slopes. Among successive slopes, it is seen that two adjacent slopes do not have the same inclination angle I. Of course, without departing from the scope of the invention, the inclined surface 15 could also have a single slope evolving linearly. More specifically, the angle of inclination I is measured relative to the longitudinal flange 10b of the guide pad 10. This angle I represents the slope that follows the heating element 5 during its insertion. In the presence of a succession of slopes, each of the slopes has an inclination angle I of less than 45 degrees. According to one embodiment, the inclined surface 15 of a guide stud 10 forms an inclination angle I of between 15 and 25 degrees with the longitudinal flange 10b.
  • FIG. 3 also shows that according to the insertion direction of the heating element 5 in the housing 7, represented by the arrow S, the two guide pads 10 each have inclined surfaces 15 having heights H that are larger and larger the height H being measured along the vertical axis V.
  • the height H of an inclined surface 15 is understood to be the distance between the lowest point of the inclined surface 15 and its highest point. In other words, this means that the guide pads 10 located at the inlet of the housing 7, that is to say closer to the connection interface 100 than the bottom wall 21, have inclined surfaces 15 little marked with respect to the guide pads 10 located closer to the bottom wall 21.
  • the guide pad 10 comprises a flat face 10c located in the extension of the inclined surface 15.
  • flat face it is understood a surface extending according to a longitudinal plane or a vertical plane.
  • the flat face 10c lies in the extension of the culminating point of the inclined surface 15 and extends in a longitudinal plane defined by the longitudinal axis L and the transverse axis T.
  • the flat face 10c is located downstream of the inclined surface 15 in the direction of insertion of the heating element 5 into the housing 7 and extends parallel to the end edges 23a, 23b, 25a. , 25b.
  • the flat face 10c is upstream of the inclined surface 15 in the direction of insertion of the heating element 5 in the housing 7 and extends in a vertical plane defined by the vertical axis V and the transverse axis T.
  • the guide pad 10 could comprise a first flat face 10c located upstream of the inclined surface 15 and a second flat face 10c located downstream of the inclined surface
  • a median longitudinal axis Mi extending parallel to the two end edges 23a, 23b, 25a, is defined.
  • the median longitudinal axis Mi divides the longitudinal wall 23, 25 in two equal parts including a first portion comprising the first end edge 23a, 25a and a second portion comprising the second end edge 23b, 25b.
  • the guide pads 10 are arranged successively with the ribs 6, 8, that they are guide ribs 6 or stiffening 8, alternately near the first edge end 23a, 25a or the second end edge 23b, 25b of the same longitudinal wall 23, 25.
  • each lateral housing 7 comprises a stud of FIG. 10 located in an area Z3 defined between the second end edge 23b, 25b and the median longitudinal axis Mi of the inner face 230, 250, of one of the longitudinal walls 23, 25 while a rib, here a guide rib 6, is located in a zone Z4 defined between the median longitudinal axis Mi and the first end edge 23a, 25a of the inner face 230, 250 of the opposite longitudinal wall 23, 25.
  • the guide pads 10 are arranged successively with the ribs 6, 8, whether they are guide ribs 6 or stiffening 8, alternately near the first end edge 23a, 25a or the second edge of end 23b, 25b of two opposite longitudinal walls 23, 25 for the same housing 7.
  • the guide pad 10 is located in the zone Z4 defined between the median longitudinal axis Mi and the first edge of end 25a of the inner face 250 of the second longitudinal wall 25 while a rib of 8 successive stiffening of the guide pad 10, in the direction of insertion represented by the arrow S, is located in a zone Z3 defined between the second end edge 23b of the first longitudinal wall 23 and the median longitudinal axis Mi of this wall 23.
  • the ribs 6, 8 are replaced by other guide pads 10 so that the guide pads are arranged alternately in the zones Z3, Z4 on the longitudinal walls 23, 25 opposite.
  • the guide pads 10 are alternately arranged on the first and second longitudinal walls 23, 25 while also being alternately arranged near the first end edge 23a, 25a or the second end edge 23b, 25b.
  • the guide pads 10 arranged in this arrangement have an inclined surface 15 having a slope increasing in the direction of insertion of the heating element 5 in the housing 7.
  • longitudinal wall 23, 25 comprises at least two guide pads 10 arranged successively one by one in the direction of insertion.
  • a first guide pad 10 is located in the zone Z5 defined between the first end edge 25a and the axis longitudinal median Mi of the inner face 250, and a second guide pad is located in a zone Z6 defined between the median longitudinal axis M 1 and the second end edge 25b of the same inner face 250.
  • a third guide pad 10 it would be located, according to this arrangement, in the zone Z5 opposite to the zone Z6 where is located the second pad 10.
  • the assembly described below is substantially similar for each of the arrangements of the guide pads 10 in the frame 3 and possible variants of these arrangements.
  • the insertion of the heating elements 5 in the appropriate housings 7 inside the heating compartment 30 is first carried out.
  • the heating elements 5 are inserted through the opening 50 formed at one end of the frame 3. and sliding the heating elements 5 in translation to the bottom wall 21 of the housing 7, in particular in the direction of insertion shown by the arrow S.
  • the heating elements 5 and in particular the inclined surface-facing radiating elements 15 are deviated from their initial trajectory and are guided in the direction of the end edge 23a, 23b, 25a, 25b opposite to the inclined surface 15. Due to the rigidity of the heating elements 5 and the gentle slope of the inclined surface 15 of the guide pads 10, the heating elements 5 are not deformed and the insertion forces are reduced compared to the insertion forces necessary to pass means plastic deformation of the prior art.
  • the insertion of the heating elements 5 continues until they meet the guide ribs 6 located on the end edge 23a, 23b, 25a, 25b opposite to the inclined surface 15 of the first guide pad 10, according to the direction of insertion.
  • These guide ribs 6 prevent the heating elements 5 from leaving their insertion path and the insertion continues to the bottom wall 21.
  • the heating elements 5 remain in contact with the culminating point of the guide pads 10. In this position, the heating elements 5 are constrained in their housing 7 at the same time by the guide pads 10 and the rib 6, 8 opposite, thus avoiding any existing game.
  • connection interface 100 is then disposed at one end of the heating compartment 30 and allows the connection of the electric heater 1 to an electrical network of the vehicle.
  • the heating device 1 is then inserted into a duct of the heating-ventilation and / or air-conditioning system.

Abstract

A frame (3) of a device for electrically heating an air flow for a motor vehicle comprises at least one housing (7) intended to receive a heating element, the housing (7) being defined by two longitudinal walls (23, 25) transversely delimiting an insertion path for the heating element, each longitudinal wall (23, 25) comprising an internal face (250) facing towards the insertion path, each internal face (250) being delimited by two longitudinally-extending end edges (23a, 25a, 25b). At least one guide block (10) extends as a projection out from at least one of the internal faces (250), the said guide block (10) comprising an inclined guide surface (15) intended to come into contact with the heating element (5) and designed to guide the heating element towards one of the end edges (23a, 25a, 25b) that delimit the internal face (250) from which the said guide block (10) extends.

Description

L'invention concerne les dispositifs de chauffage électrique, notamment pour une installation de ventilation, de chauffage et/ou de climatisation d'un véhicule automobile.  The invention relates to electric heating devices, especially for a ventilation system, heating and / or air conditioning of a motor vehicle.
Le réchauffage de l'air destiné au chauffage de l'habitacle d'un véhicule automobile à moteur thermique, ainsi qu'au désembuage et au dégivrage des surfaces vitrées, est assuré par échange de chaleur entre un flux d'air et un liquide de refroidissement du moteur thermique circulant dans un échangeur de chaleur. Heating of the air intended for heating the passenger compartment of a motor vehicle with a heat engine, as well as demisting and defrosting of the glazed surfaces, is ensured by heat exchange between a flow of air and a liquid of cooling of the heat engine circulating in a heat exchanger.
Au démarrage du moteur thermique et pendant une certaine durée suivant le temps de démarrage, les calories transportées par le liquide de refroidissement du moteur sont insuffisantes pour assurer un chauffage rapide et efficace de l'habitacle. Cela est observé plus particulièrement avec certains types de moteur et présente un inconvénient par temps froid, car non seulement la température interne de l'habitacle ne peut être élevée rapidement, mais en outre les fonctions de désembuage et de dégivrage ne peuvent être assurées efficacement. Pour remédier à ces inconvénients, il a été proposé de monter un dispositif de chauffage électrique additionnel dans le flux d'air dirigé vers l'habitacle. At the start of the engine and for a certain period following the start-up time, the calories transported by the engine coolant are insufficient to ensure rapid and efficient heating of the passenger compartment. This is observed more particularly with certain types of engine and has a disadvantage in cold weather, because not only the internal temperature of the passenger compartment can be raised quickly, but also demisting and defrosting functions can not be ensured effectively. To remedy these drawbacks, it has been proposed to mount an additional electrical heating device in the air flow directed towards the passenger compartment.
Un tel dispositif de chauffage électrique additionnel comprend généralement un cadre présentant un corps de chauffe comportant une pluralité de plaques conductrices parallèles entre lesquelles sont montés des éléments résistifs chauffants, par exemple des résistances à coefficient de température positif (CTP), et des éléments radiants augmentant la surface d'échange thermique avec le flux d'air traversant le dispositif de chauffage électrique. Ces différents éléments sont assemblés de manière à former au moins un élément chauffant, le ou les éléments chauffants constitutifs du corps de chauffe étant alors insérés dans un logement de celui-ci. Such an additional electric heating device generally comprises a frame having a heating body comprising a plurality of parallel conductive plates between which heating resistive elements are mounted, for example positive temperature coefficient (PTC) resistors, and radiant elements increasing the heat exchange surface with the flow of air passing through the electric heating device. These different elements are assembled so as to form at least one heating element, the heating element (s) constituting the heater being then inserted into a housing thereof.
On connaît des dispositifs de chauffage électrique dans lesquels, le logement, défini par des parois, comporte des moyens de déformation plastique disposés en saillie de ces parois. Ces moyens de déformation plastique permettent de contraindre et de déformer plastiquement chaque élément chauffant en direction de la paroi opposée du logement, notamment lors de leur insertion dans le logement. Ces moyens de déformation plastique permettent de plaquer les éléments chauffants dans le logement tout en s'affranchissant d'élément élastiques exerçant des forces de rappel élastique sur les éléments chauffants qui sont susceptibles de casser. Electric heating devices are known in which, the housing, defined by walls, comprises plastic deformation means arranged projecting from these walls. These plastic deformation means make it possible to plastically constrain and deform each heating element in the direction of the opposite wall of the housing, in particular when they are inserted into the housing. These plastic deformation means make it possible to press the heating elements into housing while eliminating elastic member exerting elastic restoring forces on the heating elements that are likely to break.
Cependant, l'insertion des éléments chauffants dans le corps de chauffe se faisant par un robot, la rencontre des éléments chauffants avec les moyens de déformation plastique a pour conséquence d'augmenter considérablement les efforts d'insertion. Les capteurs équipant le robot détectent de manière récurrente, que l'augmentation des efforts d'insertion correspond à une mise en butée des éléments chauffants dans le corps de chauffe. Pour des raisons de sécurité, cette détection de mise en butée force le robot à s'arrêter, afin qu'une vérification par un opérateur soit effectuée. L'arrêt du robot et la vérification par l'opérateur interrompent la chaîne de fabrication, ce qui génère une perte de temps et un coût à la fabrication. However, the insertion of the heating elements in the heating body being done by a robot, the meeting of the heating elements with the plastic deformation means has the consequence of considerably increasing the insertion forces. The sensors equipping the robot recurrently detect that the increase in insertion forces corresponds to an abutment of the heating elements in the heating body. For security reasons, this stop detection forces the robot to stop, so that verification by an operator is performed. Stopping the robot and verification by the operator interrupts the production line, which generates a waste of time and cost to manufacture.
Dans ce contexte, l'invention vise à proposer une solution pour maintenir la chaîne de fabrication en fonctionnement lors de l'insertion des éléments chauffants dans le cadre du dispositif de chauffage électrique. L'invention propose à cet effet un cadre d'un dispositif de chauffage électrique d'un flux d'air circulant à l'intérieur d'une installation de ventilation, de chauffage et/ou de climatisation d'un véhicule automobile, ledit cadre comprenant au moins un compartiment de chauffe présentant au moins un logement destiné à recevoir un élément chauffant, le logement étant défini par deux parois longitudinales délimitant transversalement un chemin d'insertion pour l'élément chauffant, chaque paroi longitudinale comprenant une face interne orientée vers le chemin d'insertion, chaque face interne étant délimitée par deux bords d'extrémité s'étendant longitudinalement, avec un premier bord d'extrémité situé à l'opposé d'un deuxième bord d'extrémité, caractérisé en ce qu'au moins un plot de guidage s'étend en saillie d'au moins une des faces internes, ledit plot de guidage comprenant une surface inclinée de guidage destinée à venir au contact de l'élément chauffant, ladite surface inclinée de guidage étant agencée pour guider l'élément chauffant en direction d'un des bords d'extrémité délimitant la face interne à partir de laquelle ledit plot de guidage s'étend. Ainsi, la présence du plot de guidage et de sa surface inclinée permet de réduire les efforts d'insertion par rapport à un moyen de déformation plastique pouvant former une butée lors de l'insertion des éléments chauffants. Cette réduction des efforts d'insertion présente l'avantage de réduire voire de supprimer totalement l'interruption de la chaîne de fabrication par le robot détectant la mise en butée des éléments chauffants. En effet, la présence de la surface inclinée de guidage permet d'accompagner l'élément chauffant lors de son insertion. II est entendu que, selon l'invention, les bords d'extrémité s'étendent selon la longueur de la paroi longitudinale, la longueur étant la plus grande dimension d'une arête de la paroi. In this context, the invention aims to provide a solution to keep the production line in operation during the insertion of the heating elements in the context of the electric heating device. The invention proposes for this purpose a frame of a device for electric heating of a flow of air flowing inside a ventilation, heating and / or air conditioning system of a motor vehicle, said frame comprising at least one heating compartment having at least one housing for receiving a heating element, the housing being defined by two longitudinal walls transversely delimiting an insertion path for the heating element, each longitudinal wall comprising an inner face facing the insertion path, each inner face being delimited by two longitudinally extending end edges, with a first end edge located opposite a second end edge, characterized in that at least one guiding stud extends projecting from at least one of the internal faces, said guiding stud comprising an inclined guide surface intended to come into contact with the heating element. wherein said angled guide surface is arranged to guide the heating element towards one of the end edges defining the inner face from which said guide pad extends. Thus, the presence of the guide pad and its inclined surface makes it possible to reduce the insertion forces with respect to a plastic deformation means that can form a stop during the insertion of the heating elements. This reduction in insertion efforts has the advantage of reducing or even completely eliminate the interruption of the production line by the robot detecting the abutment of the heating elements. Indeed, the presence of the inclined guide surface makes it possible to accompany the heating element during its insertion. It is understood that, according to the invention, the end edges extend along the length of the longitudinal wall, the length being the largest dimension of an edge of the wall.
Selon une ou plusieurs caractéristiques pouvant être prise seule ou en en combinaison, on pourra prévoir que : - La surface inclinée est agencée pour guider l'élément chauffant uniquement en direction d'un des bords d'extrémité. On entend par là qu'aucune autre composante de la direction de guidage de l'élément chauffant est possible. According to one or more characteristics that can be taken alone or in combination, it can be provided that: the inclined surface is arranged to guide the heating element only in the direction of one of the end edges. By this is meant that no other component of the guidance direction of the heating element is possible.
- La surface inclinée de guidage du plot de guidage forme un angle droit avec la paroi longitudinale à partir de laquelle le plot de guidage s'étend. - La surface inclinée de guidage présente une normale s'étendant dans un plan parallèle à la paroi longitudinale à partir de laquelle le plot de guidage s'étend. La normale correspond à une droite orthogonale au plan tangent de la surface inclinée. - The inclined guide surface of the guide pad forms a right angle with the longitudinal wall from which the guide pad extends. - The inclined guide surface has a normal extending in a plane parallel to the longitudinal wall from which the guide pad extends. The normal is a line orthogonal to the tangent plane of the inclined surface.
- Le plot de guidage est situé à proximité d'un premier bord d'extrémité de la face interne, la surface inclinée permet alors de guider l'élément chauffant en direction d'un deuxième bord d'extrémité, le deuxième bord d'extrémité étant situé à l'opposé du premier bord d'extrémité sur la même face interne. - The guide pad is located near a first end edge of the inner face, the inclined surface then allows to guide the heating element towards a second end edge, the second end edge being located opposite the first end edge on the same inner face.
- Le plot de guidage s'étend à partir d'un des bords d'extrémité de la face interne. - The guide pad extends from one of the end edges of the inner face.
- Une partie du plot de guidage est située à l'intérieur du chemin d'insertion de l'élément chauffant, ladite partie du plot de guidage étant destinée à venir au contact de l'élément chauffant. La partie du plot de guidage, se situant dans le chemin d'insertion de l'élément chauffant, permet de maintenir l'élément chauffant dans son logement, une fois que celui-ci a été inséré. Ainsi, l'invention permet également de s'affranchir d'éléments élastiques susceptibles de casser. - La partie située à l'intérieur du chemin d'insertion comprend la surface inclinée de guidage. - A portion of the guide pad is located inside the insertion path of the heating element, said portion of the guide pad being intended to come into contact with the heating element. The portion of the guide pin, located in the insertion path of the heating element, keeps the heating element in its housing, once it has been inserted. Thus, the invention also makes it possible to dispense with elastic elements that can break. - The part located inside the insertion path comprises the inclined guide surface.
- Le plot de guidage comprend au moins quatre surfaces s'étendant de manière perpendiculaire à la face interne à partir de laquelle le plot s'étend. - La surface inclinée de guidage est orientée de sorte que le plot de guidage présente une dimension augmentant selon un sens d'insertion de l'élément chauffant dans le logement. Ainsi, la surface inclinée de guidage accompagne l'élément chauffant en direction du bord d'extrémité. Le sens d'insertion de l'élément chauffant dans le logement s'étend depuis une interface de connexion vers une paroi de fond du logement et selon la direction d'insertion. - The guide pad comprises at least four surfaces extending perpendicularly to the inner face from which the stud extends. - The inclined guide surface is oriented so that the guide pad has a dimension increasing in a direction of insertion of the heating element in the housing. Thus, the inclined guide surface accompanies the heating element towards the end edge. The direction of insertion of the heating element into the housing extends from a connection interface to a bottom wall of the housing and in the direction of insertion.
- La surface inclinée de guidage du plot de guidage présente une dimension augmentant linéairement selon le sens d'insertion de l'élément chauffant dans le logement. Ainsi, la surface inclinée de guidage accompagne progressivement et linéairement l'élément chauffant en direction du bord d'extrémité opposé. Par linéairement, il est entendu que la surface inclinée de guidage présente une pente suivant une direction rectiligne. - The inclined guide surface of the guide pad has a dimension increasing linearly in the direction of insertion of the heating element in the housing. Thus, the inclined guide surface gradually and linearly accompanies the heating element towards the opposite end edge. By linearly, it is understood that the inclined guide surface has a slope in a rectilinear direction.
- La surface inclinée de guidage d'un plot de guidage comprend plusieurs pentes successives. Parmi les pentes successives, deux pentes adjacentes ne présentent pas un même angle d'inclinaison. - Le plot de guidage comprend au moins un rebord longitudinal s'étendant parallèlement aux bords d'extrémité de la face interne à parti de laquelle le plot de guidage s'étend. Un rebord longitudinal correspond à une arête du plot de guidage. - The inclined guide surface of a guide pad comprises several successive slopes. Among the successive slopes, two adjacent slopes do not have the same angle of inclination. - The guide pad comprises at least one longitudinal flange extending parallel to the end edges of the inner face from which the guide pad extends. A longitudinal flange corresponds to an edge of the guide pin.
- La surface inclinée de guidage présente un angle d'inclinaison inférieur à 45 degrés. L'angle d'inclinaison est mesuré par rapport à un rebord longitudinal du plot de guidage. Cet angle d'inclinaison représente donc la pente que suit l'élément chauffant lors de son insertion. En cas de succession de pentes, chacune des pentes présente un angle d'inclinaison inférieur à 45 degrés. - The inclined guide surface has an inclination angle of less than 45 degrees. The angle of inclination is measured with respect to a longitudinal flange of the guide pin. This angle of inclination thus represents the slope that follows the heating element during its insertion. In the case of succession of slopes, each of the slopes has an inclination angle of less than 45 degrees.
- La surface inclinée de guidage du plot de guidage forme un angle d'inclinaison compris entre 15 et 25 degrés avec le rebord longitudinal du plot de guidage. - Deux parois longitudinales, dont une première paroi longitudinale et une deuxième paroi longitudinale, délimitant le même logement, comprennent chacune au moins un plot de guidage, lesdits plots de guidage étant disposés successivement un à un selon le sens d'insertion : - The inclined guide surface of the guide pad forms an inclination angle of between 15 and 25 degrees with the longitudinal flange of the guide pad. - Two longitudinal walls, including a first longitudinal wall and a second longitudinal wall, defining the same housing, each comprise at least one guide pad, said guide pads being successively arranged one by one according to the direction of insertion:
- dans une zone définie entre le premier bord d'extrémité de la face interne de la première paroi longitudinale et un axe longitudinal médian de la face interne de la première paroi longitudinale, et  in an area defined between the first end edge of the internal face of the first longitudinal wall and a median longitudinal axis of the internal face of the first longitudinal wall, and
- dans une zone définie entre un axe longitudinal médian de la face interne de la deuxième paroi longitudinale et le deuxième bord d'extrémité de la face interne de la deuxième paroi longitudinale.  in a zone defined between a median longitudinal axis of the internal face of the second longitudinal wall and the second end edge of the internal face of the second longitudinal wall.
En d'autres termes, on comprend que les plots de guidage sont disposés en alternance sur la première et la deuxième paroi longitudinale tout en étant également disposées en alternance à proximité du premier bord d'extrémité ou du deuxième bord d'extrémité. Les plots de guidage disposés selon cet agencement présentent une surface inclinée ayant une pente augmentant selon le sens d'insertion de l'élément chauffant dans le logement. In other words, it is understood that the guide pads are arranged alternately on the first and second longitudinal wall while also being alternately arranged near the first end edge or the second end edge. The guide pads arranged according to this arrangement have an inclined surface having a slope increasing in the direction of insertion of the heating element in the housing.
Pour rappel, l'axe longitudinal médian s'étend de manière parallèle aux deux bords d'extrémité d'une même face interne et à équidistance de ceux-ci. En d'autres termes, l'axe longitudinal médian divise la paroi longitudinale en deux parties égales dont une première partie comprenant le premier bord d'extrémité et une deuxième partie comprenant le deuxième bord d'extrémité, les bords d'extrémité s'étendant selon la longueur de la paroi longitudinale. As a reminder, the median longitudinal axis extends parallel to the two end edges of the same internal face and equidistant from them. In other words, the median longitudinal axis divides the longitudinal wall into two equal parts, a first portion comprising the first end edge and a second portion comprising the second end edge, the end edges extending according to the length of the longitudinal wall.
- Une même paroi longitudinale comprend au moins deux plots de guidage disposés successivement un à un selon le sens d'insertion : - The same longitudinal wall comprises at least two guide pads successively arranged one by one according to the direction of insertion:
- dans une zone définie entre le premier bord d'extrémité et un axe longitudinal médian de la face interne, et  in an area defined between the first end edge and a median longitudinal axis of the inner face, and
- dans une zone définie entre l'axe longitudinal médian et le deuxième bord d'extrémité de la même face interne.  in an area defined between the median longitudinal axis and the second end edge of the same internal face.
En d'autres termes, on comprend que sur une même paroi longitudinale sont disposés un premier plot de guidage situé entre le premier bord d'extrémité et l'axe longitudinal médian de la paroi longitudinale, puis un deuxième plot de guidage est situé entre le deuxième bord d'extrémité et l'axe longitudinal médian de cette même paroi longitudinale. En présence d'un troisième plot de guidage, celui-ci se situe, selon cet agencement dans la zone opposée à la zone où est situé le deuxième plot. In other words, it is understood that on the same longitudinal wall are arranged a first guide pad located between the first end edge and the longitudinal central axis of the longitudinal wall, then a second guide pin is located between the second end edge and the median longitudinal axis of the same longitudinal wall. In the presence of a third guide pad, it is located in this arrangement in the area opposite to the area where the second pad is located.
- Le cadre comprend des nervures délimitant verticalement le chemin d'insertion pour l'élément chauffant, les nervures s'étendant dans un plan transversal aux parois longitudinales, et au moins un plot de guidage est disposé, selon le sens d'insertion, en alternance avec les nervures, de telle manière qu'un plot de guidage est situé dans une zone définie entre le premier bord d'extrémité et un axe longitudinal médian de la face interne d'une paroi longitudinale et au moins une des nervures est située dans une zone définie entre l'axe longitudinal médian et le deuxième bord d'extrémité de la même face interne ou de la face interne de la paroi longitudinale opposée d'un même logement. En d'autres termes, on comprend que les plots de guidage sont disposés successivement avec les nervures en alternance à proximité du premier bord d'extrémité ou du deuxième bord d'extrémité. - Les nervures s'étendent partiellement entre deux parois longitudinales formant le même logement. - The frame comprises ribs vertically defining the insertion path for the heating element, the ribs extending in a plane transverse to the longitudinal walls, and at least one guide pad is arranged, in the direction of insertion, in alternation with the ribs, such that a guide pad is located in an area defined between the first end edge and a median longitudinal axis of the inner face of a longitudinal wall and at least one of the ribs is located in an area defined between the median longitudinal axis and the second end edge of the same inner face or the inner face of the opposite longitudinal wall of the same housing. In other words, it is understood that the guide pads are arranged successively with the ribs alternately near the first end edge or the second end edge. - The ribs extend partially between two longitudinal walls forming the same housing.
- Les nervures sont des nervures de rigidification s'étendant au moins entre deux parois longitudinales formant le même logement. - The ribs are stiffening ribs extending at least between two longitudinal walls forming the same housing.
- Le cadre comporte une pluralité de plots de guidage ménagés dans un même logement et, selon un sens d'insertion de l'élément chauffant dans le logement, les plots de guidage présentent des surfaces inclinées de guidage ayant des hauteurs de plus en plus grandes. La hauteur d'une surface inclinée est entendue comme étant la distance, ici mesurée selon un axe vertical, séparant le point le plus bas de la surface inclinée et son point le plus haut. En d'autres termes, cela signifie que les plots de guidages situés en entrée du logement présentent des surfaces inclinées peu marquées par rapport aux plots de guidage situés plus vers le fond du logement. L'axe vertical est parallèle à l'axe suivi par le flux d'air traversant le dispositif de chauffage. - The frame comprises a plurality of guide pads formed in the same housing and, in a direction of insertion of the heating element in the housing, the guide pads have inclined guide surfaces having heights greater and greater . The height of an inclined surface is understood as the distance, here measured along a vertical axis, separating the lowest point of the inclined surface and its highest point. In other words, this means that the guide pads located at the entrance of the housing have inclined surfaces slightly marked with respect to the guide pads located more towards the bottom of the housing. The vertical axis is parallel to the axis followed by the flow of air passing through the heater.
- Chaque plot de guidage comprend une surface plane tournée vers l'intérieur du logement, ladite surface plane étant parallèle à la paroi longitudinale à partir de laquelle le plot de guidage s'étend. - Each guide pad comprises a flat surface facing the interior of the housing, said flat surface being parallel to the longitudinal wall from which the guide pad extends.
Le plot de guidage comprend une face plate située dans le prolongement surface inclinée, selon la direction d'insertion de l'élément chauffant. The guide pad comprises a flat face located in the extension inclined surface, according to the direction of insertion of the heating element.
- La face plate se trouve dans le prolongement du point culminant de la surface inclinée, selon un sens d'insertion de l'élément chauffant dans le logement. Autrement dit, la face plate se situe en aval de la surface inclinée selon le sens d'insertion de l'élément chauffant dans le logement. - The flat face is in the extension of the highest point of the inclined surface, according to a direction of insertion of the heating element in the housing. In other words, the flat face is located downstream of the inclined surface in the direction of insertion of the heating element in the housing.
- La face plate se trouve en amont de la surface inclinée selon un sens d'insertion de l'élément chauffant dans le logement. - The flat face is upstream of the inclined surface in a direction of insertion of the heating element in the housing.
- Le plot de guidage comprend un premier face plate situé en amont de la surface inclinée et un deuxième face plate situé en aval de la surface inclinée, l'amont et l'aval étant entendu selon un sens d'insertion de l'élément chauffant dans le logement. - The guide pad comprises a first flat face located upstream of the inclined surface and a second flat face located downstream of the inclined surface, the upstream and downstream being heard in a direction of insertion of the heating element in the accommodation.
L'invention a également pour objet un dispositif de chauffage électrique comprenant au moins un élément chauffant caractérisé en ce qu'il comprend un cadre tel que défini précédemment dans lequel l'au moins un élément chauffant est disposé. The invention also relates to an electric heating device comprising at least one heating element characterized in that it comprises a frame as defined above in which the at least one heating element is disposed.
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 ι est une vue d'ensemble, en perspective, d'un dispositif de chauffage électrique selon l'invention, comprenant un cadre dans lequel trois éléments chauffants ont été insérés et à une extrémité duquel est fixée une interface de connexion électrique ; FIG. 1 is an overall perspective view of an electric heating device according to the invention, comprising a frame in which three heating elements have been inserted and at one end of which is fixed an electrical connection interface;
- la figure 2 est une vue en perspective du cadre du dispositif de chauffage de la figure î sans les éléments chauffants et sans l'interface de connexion ; FIG. 2 is a perspective view of the frame of the heater of FIG. 1 without the heating elements and without the connection interface;
- la figure 3 est une vue en coupe longitudinale du cadre illustré sur la figure 2 réalisée selon le repère III - III montrant une paroi longitudinale du cadre. - Figure 3 is a longitudinal sectional view of the frame shown in Figure 2 made according to the reference III - III showing a longitudinal wall of the frame.
- la figure 4 est une vue en coupe transversale du cadre illustré sur la figure 2 réalisée selon le repère IV - IV montrant un fond du cadre ; - Figure 4 is a cross-sectional view of the frame shown in Figure 2 made according to the reference IV - IV showing a bottom of the frame;
- la figure 5 est une vue montrant une disposition de deux nervures de guidage disposées en alternance du côté d'un premier bord d'extrémité et d'un deuxième bord d'extrémité d'une même paroi longitudinale. FIG. 5 is a view showing an arrangement of two guide ribs arranged alternately on the side of a first end edge and a second end edge of the same longitudinal wall.
Il faut tout d'abord noter que les figures exposent l'invention de manière détaillée pour mettre en œuvre l'invention, lesdites figures pouvant bien entendu servir à mieux définir l'invention le cas échéant. Toutefois, il est à noter que ces figures n'exposent qu'une partie des exemples de réalisation possibles selon l'invention. It should first be noted that the figures disclose the invention in detail to implement the invention, said figures can of course be used to better define the invention where appropriate. However, it should be noted that these figures only show part of the possible embodiments of the invention.
Dans la description qui va suivre, on se référera à une orientation en fonction des axes longitudinaux L, verticaux V et transversaux T, tels qu'ils sont définis par le trièdre L,V,T représenté sur les figures. L'axe longitudinal L correspond à la direction d'allongement du cadre du dispositif de chauffage électrique, l'axe vertical V perpendiculaire à l'axe longitudinal L, correspond à la direction suivie par le flux d'air à réchauffer traversant le dispositif de chauffage et l'axe transversal T est perpendiculaire à la fois à l'axe longitudinal L et à l'axe vertical V. Il est à noter que le choix des appellations de ces axes n'est pas limitatif de l'orientation que peut prendre le dispositif de chauffage électrique dans son application à un véhicule automobile. In the description which follows, reference will be made to an orientation as a function of the longitudinal axes L, vertical V and transverse T, as defined by the trihedron L, V, T shown in the figures. The longitudinal axis L corresponds to the elongation direction of the frame of the electric heating device, the vertical axis V perpendicular to the longitudinal axis L, corresponds to the direction followed by the flow of air to be heated through the device. heating and the transverse axis T is perpendicular to both the longitudinal axis L and the vertical axis V. It should be noted that the choice of designations of these axes is not limiting the orientation that can take the electric heater in its application to a motor vehicle.
Le dispositif de chauffage électrique ι montré en figure ι est destiné à être logé dans un conduit de circulation d'air d'une installation de chauffage, de ventilation, et/ou de climatisation, de manière à transformer l'énergie électrique prélevée sur le véhicule en énergie thermique restituée dans l'air traversant ce conduit. L'installation n'est pas représentée ici, 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 électrique. The electric heating device ι shown in FIG. 1 is intended to be housed in an air circulation duct of a heating, ventilation and / or air-conditioning installation, so as to transform the electrical energy taken from the vehicle in thermal energy restored in the air passing through this conduit. The installation is not shown here, but it will be understood that a main duct of this installation conventionally comprises an opening made in the wall for the insertion of the electric heating device.
La figure ι montre un dispositif de chauffage électrique ι selon l'invention, comprenant un cadre 3 dans lequel des éléments chauffants 5, aptes à transformer un courant électrique en énergie thermique, ont été insérés. Pour accompagner l'insertion des éléments chauffants 5 à l'intérieur du cadre 3, le cadre 3 comprend des plots de guidage 10 qui seront décrits en détails plus loin. FIG. 1 shows an electric heating device ι according to the invention, comprising a frame 3 in which heating elements 5, capable of transforming an electric current into thermal energy, have been inserted. To accompany the insertion of the heating elements 5 inside the frame 3, the frame 3 comprises guide pads 10 which will be described in detail below.
Les éléments chauffants 5 comprennent des moyens aptes à échanger de la chaleur, tels que des éléments radiants 53 permettant d'augmenter la surface d'échange thermique, avec le flux d'air traversant le dispositif de chauffage électrique l. Les éléments chauffants 5 comprennent également des électrodes 54 entre lesquelles sont disposées des éléments résistifs chauffants, par exemple des résistances à coefficient de température positif 55 (CTP), et contre lesquelles sont fixés les éléments radiants 53. Les électrodes 54 et les résistances CTP 55 permettent de transformer un courant électrique en énergie thermique. Il est à noter que les résistances à coefficient de température positif 55 peuvent être collées directement sur les éléments radiants 53. The heating elements 5 comprise means capable of exchanging heat, such as radiant elements 53 making it possible to increase the heat exchange surface, with the flow of air passing through the electric heating device. l. The heating elements 5 also comprise electrodes 54 between which heating resistive elements are arranged, for example positive temperature coefficient resistors 55 (PTC), and against which the radiant elements 53 are fixed. The electrodes 54 and the PTC resistors 55 make it possible to transform an electric current into thermal energy. It should be noted that the positive temperature coefficient resistors 55 can be bonded directly to the radiant elements 53.
Le cadre 3 comporte un compartiment de chauffe 30, formant un carter de réception pour les éléments chauffants 5, et le cadre 3 est configuré pour coopérer à une de ses extrémités avec une interface de connexion 100. Les éléments chauffants 5 sont insérés dans des logements 7 ménagés à l'intérieur du compartiment de chauffe 30. Et l'interface de connexion 100 vient fermer un accès par lequel sont insérés les éléments chauffants 5 dans les logements 7 du compartiment de chauffe 30 en même temps qu'elle permet le raccordement du dispositif de chauffage électrique 1 à un réseau électrique du véhicule permettant l'alimentation électrique des éléments chauffants 5. The frame 3 comprises a heating compartment 30, forming a receiving housing for the heating elements 5, and the frame 3 is configured to cooperate at one of its ends with a connection interface 100. The heating elements 5 are inserted into housing 7 and the connection interface 100 closes an access through which are inserted the heating elements 5 in the housing 7 of the heating compartment 30 at the same time that it allows the connection of the heating element 30. electric heating device 1 to an electrical network of the vehicle allowing the electric supply of the heating elements 5.
Le cadre 3 et le compartiment de chauffe 30 présentent une forme de parallélépipède rectangle. Les deux faces principales du cadre 3, respectivement avant et arrière, opposées selon l'axe vertical V, sont ajourées pour permettre le passage d'un flux d'air et une diffusion de chaleur dans le conduit où le dispositif de chauffage électrique 1 est installé. Le cadre 3 comprend un plan médian M correspondant à un plan passant par une moitié du cadre et étant perpendiculaire à une direction suivie par le flux d'air circulant au travers du dispositif de chauffage électrique 10. Il est entendu que les faces avant et arrière du cadre 3 s'étendent dans des plans parallèles au plan médian M. The frame 3 and the heating compartment 30 have a rectangular parallelepiped shape. The two main faces of the frame 3, respectively front and rear, opposite along the vertical axis V, are perforated to allow the passage of an air flow and a diffusion of heat in the duct where the electric heater 1 is installed. The frame 3 comprises a median plane M corresponding to a plane passing through one half of the frame and being perpendicular to a direction followed by the flow of air flowing through the electric heating device 10. It is understood that the front and rear faces of the frame 3 extend in planes parallel to the median plane M.
On note également que le cadre 3 comprend des barrettes 9 disposées entre chaque logement 7 et s'étendant dans le plan médian M du cadre 3. Ces barrettes 9 participent à la rigidification du cadre 3 et comprennent des fentes d'aération 90 autorisant le flux d'air à circuler à travers. Les fentes d'aération 90 sont positionnées les unes à la suite des autres selon l'axe longitudinal L du dispositif de chauffage 1. It is also noted that the frame 3 comprises strips 9 arranged between each housing 7 and extending in the median plane M of the frame 3. These strips 9 participate in the stiffening of the frame 3 and include ventilation slots 90 allowing the flow of air to flow through. The ventilation slots 90 are positioned one after the other along the longitudinal axis L of the heating device 1.
Comme le montre la figure 2, les logements 7 du cadre 3 sont définis par des parois longitudinales 23, 25 s'étendant selon l'axe longitudinal L. Plus précisément, chaque logement est défini par deux parois longitudinales 23, 25, dont une première paroi longitudinale 23 et une deuxième paroi longitudinale 25 délimitant transversalement un chemin d'insertion pour l'élément chauffant 5. Le chemin d'insertion est le chemin emprunté par l'élément chauffant 5 lors de son insertion. En d'autres termes, le chemin d'insertion correspond à un volume occupé par l'élément chauffant 5 durant son insertion. Ainsi, l'écartement entre la première paroi longitudinale 23 et la deuxième paroi longitudinale 25 du même logement 7 correspond à la dimension transversale de l'élément chauffant 5, aux jeux de fabrication près. Selon l'exemple de réalisation illustré, le cadre 3 comprend trois logements 7 avec un logement central et deux logements latéraux 7 situés de part et d'autre du logement central 7. As shown in FIG. 2, the housings 7 of the frame 3 are defined by longitudinal walls 23, 25 extending along the longitudinal axis L. More precisely, each housing is defined by two longitudinal walls 23, 25, including a first longitudinal wall 23 and a second longitudinal wall 25 transversely delimiting an insertion path for the heating element 5. The insertion path is the path taken by the heating element 5 when inserted. In other words, the insertion path corresponds to a volume occupied by the heating element 5 during its insertion. Thus, the spacing between the first longitudinal wall 23 and the second longitudinal wall 25 of the same housing 7 corresponds to the transverse dimension of the heating element 5, to the manufacturing sets. According to the exemplary embodiment illustrated, the frame 3 comprises three housings 7 with a central housing and two lateral housings 7 located on either side of the central housing 7.
Chaque paroi longitudinale 23, 25 comprend une face interne 230, 250 orientée vers le chemin d'insertion. Chaque face interne 230, 250 est délimitée par deux bords d'extrémité 23a, 23b, 25a, 25b s'étendant longitudinalement. Plus précisément, ces bords d'extrémité 23a, 23b, 25a, 25b correspondent à des arêtes des parois longitudinales 23, 25. Pour la face interne 230 de la première paroi longitudinale 23 on définit un premier bord d'extrémité 23a situé à l'opposé d'un deuxième bord d'extrémité 23b (cf. figure 3). De même, pour la deuxième face interne 250 de la deuxième paroi longitudinale 25, on définit un premier bord d'extrémité 25a situé à l'opposé d'un deuxième bord d'extrémité 25b. Each longitudinal wall 23, 25 comprises an inner face 230, 250 oriented towards the insertion path. Each inner face 230, 250 is delimited by two end edges 23a, 23b, 25a, 25b extending longitudinally. More precisely, these end edges 23a, 23b, 25a, 25b correspond to edges of the longitudinal walls 23, 25. For the internal face 230 of the first longitudinal wall 23, a first end edge 23a is defined at opposite of a second end edge 23b (see Figure 3). Similarly, for the second inner face 250 of the second longitudinal wall 25, there is defined a first end edge 25a located opposite a second end edge 25b.
Sur la figure 2, on peut également voir que chaque logement 7 est délimité par une paroi de fond 21 s'étendant selon l'axe transversal T. Cette paroi de fond 21 est située à l'opposé d'une ouverture 50 par laquelle les éléments chauffants 5 entrent dans le compartiment de chauffe 30. il est à noter que les éléments chauffant 5 sont insérés dans les logements en suivant une direction d'insertion parallèle à l'axe longitudinal L. Le sens d'insertion est quant à lui défini depuis l'ouverture 50 vers la paroi de fond 21. In FIG. 2, it can also be seen that each housing 7 is delimited by a bottom wall 21 extending along the transverse axis T. This bottom wall 21 is situated opposite an opening 50 through which the heating elements 5 enter the heating compartment 30. it should be noted that the heating elements 5 are inserted into the housings in a direction of insertion parallel to the longitudinal axis L. The direction of insertion is defined from the opening 50 to the bottom wall 21.
Selon l'exemple illustré, des éléments de mise en butée 210 s'étendent à partir de la paroi de fond 21, en direction de l'ouverture 50. Autrement dit, chaque élément de mise en butée 210 s'étend selon l'axe longitudinal L vers l'intérieur du logement 7.According to the illustrated example, abutment elements 210 extend from the bottom wall 21, towards the opening 50. In other words, each abutment element 210 extends along the axis longitudinal L towards the interior of the dwelling 7.
Deux éléments de mise en butée 210 peuvent être prévus par logement 7. De manière générale, le nombre d'éléments de mise en butée 210 dans un logement 7 est égal au nombre d'éléments radiants 53 équipant l'élément chauffant 5 destiné à entrer dans ce logement 7. Two abutment members 210 may be provided per housing 7. In general, the number of abutment members 210 in a housing 7 is equal to number of radiant elements 53 equipping the heating element 5 intended to enter this housing 7.
Le cadre 3 comprend également des nervures 6, 8 délimitant verticalement le chemin d'insertion de l'élément chauffant 5. Pour cela, les nervures 6, 8 s'étendent dans un plan défini par l'axe transversal T et l'axe longitudinal L, aussi appelé plan transversal aux parois longitudinales 23, 25. Parmi ces nervures 6, 8, on distingue des nervures s'étendant partiellement entre deux parois longitudinales 23, 25 formant le même logement 7, appelées nervures de guidage 6 dans la suite de la description, et des nervures s'étendant au minimum entre deux parois longitudinales 23, 25 formant le même logement 7, appelées nervures de rigidification 8. L'écartement entre deux nervures 6, 8, qu'elles soient de guidage ou de rigidification, situées de part et d'autre du chemin d'insertion selon l'axe vertical V correspond à la dimension verticale de l'élément chauffant 5, aux jeux de fabrication près. The frame 3 also comprises ribs 6, 8 delimiting vertically the insertion path of the heating element 5. For this, the ribs 6, 8 extend in a plane defined by the transverse axis T and the longitudinal axis L, also called transverse plane to the longitudinal walls 23, 25. Among these ribs 6, 8, there are ribs extending partially between two longitudinal walls 23, 25 forming the same housing 7, called guide ribs 6 in the following. the description, and ribs extending at least between two longitudinal walls 23, 25 forming the same housing 7, called stiffening ribs 8. The spacing between two ribs 6, 8, whether guide or stiffening, located on either side of the insertion path along the vertical axis V corresponds to the vertical dimension of the heating element 5, to the manufacturing sets.
Les nervures de rigidification 8 reliant les deux parois longitudinales 23, 25 participent à la rigidification du cadre 3 et du compartiment de chauffe 30. Le rôle des nervures de guidage 6 sera détaillé plus loin dans la description. Selon l'exemple de réalisation illustré, les nervures de guidage 6 et les nervures de rigidification 8 s'étendent à partir d'un bord d'extrémité 23a, 23b, 25a, 25b des faces internes 230, 250 et en saillie de la face interne correspondante. Selon l'invention et afin de réduire les efforts d'insertion par rapport à un moyen de déformation plastique de l'art antérieur, le cadre 3 comprend au moins un plot de guidage 10 ménagé dans l'un des logements 7. The stiffening ribs 8 connecting the two longitudinal walls 23, 25 participate in the stiffening of the frame 3 and the heating compartment 30. The role of the guide ribs 6 will be detailed later in the description. According to the exemplary embodiment illustrated, the guide ribs 6 and the stiffening ribs 8 extend from an end edge 23a, 23b, 25a, 25b of the inner faces 230, 250 and projecting from the face. corresponding internal According to the invention and in order to reduce the insertion forces with respect to a plastic deformation means of the prior art, the frame 3 comprises at least one guide stud 10 formed in one of the housings 7.
Comme cela est plus visible en figure 3, on peut voir que chaque plot de guidage 10 s'étend en saillie de la face interne 230, 250 des parois longitudinales 23, 25. De plus, chaque plot de guidage 10 comprend une surface inclinée de guidage 15 destinée à venir au contact de l'élément chauffant 5. Plus précisément, la surface inclinée de guidage 15 est agencée de manière à ce que, lors de son insertion dans le logement, l'élément chauffant entre en contact avec le plot de guidage 10 en touchant en premier cette surface inclinée de guidage. Selon l'invention, la surface inclinée de guidage 15 est agencée pour guider l'élément chauffant 5 en direction d'un des bords d'extrémité 23a, 23b, 25a, 25b délimitant la face interne 230, 250 à partir de laquelle le plot de guidage 10 s'étend. Il est notable que la surface de guidage est agencée de manière à guider ou dévier l'élément chauffant vers une zone du logement qui ouverte pour laisser passage à l'air lorsque le dispositif de chauffage électrique est opérationnel. Tel que cela va être décrit en détails ci-après, la présence et la configuration du plot de guidage 10 et de sa surface inclinée 15 permettent de conformer l'élément chauffant pour s'assurer de sa bonne position, tout en réduisant les efforts d'insertion des éléments chauffants dans les logements par rapport aux efforts d'insertion que pouvaient générer la présence dans l'art antérieur des moyens de déformation plastique formant butée lors de l'insertion des éléments chauffants 5. As can be seen more clearly in FIG. 3, it can be seen that each guide stud 10 projects from the internal face 230, 250 of the longitudinal walls 23, 25. In addition, each guide stud 10 comprises an inclined surface of a guide 15 intended to come into contact with the heating element 5. More specifically, the inclined guide surface 15 is arranged in such a way that, when it is inserted into the housing, the heating element comes into contact with the grounding pad. guidance 10 by first touching this inclined guide surface. According to the invention, the inclined guide surface 15 is arranged to guide the heating element 5 towards one of the end edges 23a, 23b, 25a, 25b delimiting the internal face 230, 250 from which the stud guide 10 extends. It is notable that the guide surface is arranged in order to guide or deflect the heating element towards an area of the housing which opens to allow air to pass when the electric heater is operational. As will be described in detail below, the presence and configuration of the guide pad 10 and its inclined surface 15 allow to conform the heating element to ensure its good position, while reducing the efforts of insertion of the heating elements in the housings with respect to the insertion forces that could be generated by the presence in the prior art of the plastic deformation means forming a stop during the insertion of the heating elements 5.
Selon l'exemple de réalisation montré en figure 3, deux plots de guidage 10 sont prévus sur la deuxième paroi longitudinale 25. Plus particulièrement, les deux plots de guidage 10 prennent naissance à partir du deuxième bord d'extrémité 25b de la face interne 250. Compte tenu de l'orientation de la surface inclinée 15, les plots de guidage 10 permettent de guider l'élément chauffant 5 en direction du bord d'extrémité opposé au bord d'extrémité à partir duquel le plot de guidage 10 s'étend. Ici, le plot de guidage 10 s'étend à partir du deuxième bord d'extrémité 25b et la surface inclinée 15 est orientée de manière à dévier l'élément chauffant 5 en direction du premier bord d'extrémité 25a. According to the embodiment shown in FIG. 3, two guide pads 10 are provided on the second longitudinal wall 25. More particularly, the two guide pads 10 originate from the second end edge 25b of the inner face 250. Given the orientation of the inclined surface 15, the guide pads 10 guide the heating element 5 towards the end edge opposite the end edge from which the guide pad 10 extends. . Here, the guide pad 10 extends from the second end edge 25b and the inclined surface 15 is oriented to deflect the heating element 5 towards the first end edge 25a.
Il est à noter que la surface inclinée 15 est agencée pour guider l'élément chauffant 5 uniquement en direction d'un des bords d'extrémité 23a, 23b, 25a, 25b de la face interne 230, 250. On entend par là qu'aucune autre composante de la direction de guidage de l'élément chauffant 5 est possible. En effet, la surface inclinée 15 du plot de guidage 10 forme un angle droit avec la paroi longitudinale 23, 25 à partir de laquelle le plot de guidage 10 s'étend. En d'autres termes, la normale à la surface inclinée 15 s'étend dans un plan parallèle à la paroi longitudinale 23, 25 à partir de laquelle le plot de guidage 10 s'étend. La normale correspond à une droite orthogonale au plan tangent de la surface inclinée 15. It should be noted that the inclined surface 15 is arranged to guide the heating element 5 only towards one of the end edges 23a, 23b, 25a, 25b of the internal face 230, 250. By this is meant that no other component of the guide direction of the heating element 5 is possible. Indeed, the inclined surface 15 of the guide pad 10 forms a right angle with the longitudinal wall 23, 25 from which the guide pad 10 extends. In other words, the normal to the inclined surface 15 extends in a plane parallel to the longitudinal wall 23, 25 from which the guide pad 10 extends. The normal corresponds to a line orthogonal to the tangent plane of the inclined surface 15.
La figure 3 montre que la surface inclinée 15 du plot de guidage 10 est située à l'intérieur du chemin d'insertion de l'élément chauffant 5 dans le logement 7. Sur cette figure, le chemin d'insertion est schématisé par le rectangle C représenté en pointillés. Le fait que la surface inclinée 15 du plot de guidage 10 soit à l'intérieur du chemin d'insertion permet de s'assurer que l'élément chauffant 5 vienne au contact de la surface inclinée 15 lors de son insertion dans le logement 7. De plus, une fois que l'élément chauffant 5 a été inséré, le contact avec la surface inclinée 15 permet de participer au maintien de l'élément chauffant 5 dans son logement 7. Il est à noter que les nervures de guidage 6 et les nervures de rigidification 8 bordent le chemin d'insertion représenté par le rectangle C. Le plot de guidage 10 comprend au moins quatre surfaces, dont la surface inclinée 15, formant toutes, un angle droit avec la paroi longitudinale 23, 25 à partir de laquelle le plot de guidage 10 s'étend, ainsi qu'une surface plane 10a parallèle à la paroi longitudinale 23, 25 tournée vers l'intérieur du logement 7. La surface plane 10a forme un rebord longitudinal 10b avec une des surfaces formant un angle droit avec la paroi longitudinale 23, 25. Plus précisément, le rebord longitudinal 10b correspond à une arête du plot de guidage 10 formée par la surface plane 10b et la surface opposée verticalement à la surface inclinée 15. On remarque que les plots de guidage 10 sont positionnés sur la paroi longitudinale 23, 25 de manière à ce que le rebord longitudinal 10b s'étende parallèlement aux bords d'extrémité 23a, 23b, 25a, 25b de la face interne 230, 250. FIG. 3 shows that the inclined surface 15 of the guide pad 10 is located inside the path of insertion of the heating element 5 into the housing 7. In this figure, the insertion path is shown schematically by the rectangle C represented in dotted lines. The fact that the inclined surface 15 of the guide pad 10 is inside the insertion path makes it possible to ensure that the heating element 5 comes into contact with the inclined surface 15 when it is inserted into the housing 7. In addition, once that the heating element 5 has been inserted, the contact with the inclined surface 15 makes it possible to participate in maintaining the heating element 5 in its housing 7. It should be noted that the guide ribs 6 and the stiffening ribs 8 line the insertion path represented by the rectangle C. The guide pad 10 comprises at least four surfaces, including the inclined surface 15, all forming a right angle with the longitudinal wall 23, 25 from which the guide pad 10 extends, as well as a flat surface 10a parallel to the longitudinal wall 23, 25 facing the inside of the housing 7. The flat surface 10a forms a longitudinal flange 10b with one of the surfaces forming a right angle with the longitudinal wall 23 , 25. More precisely, the longitudinal flange 10b corresponds to an edge of the guide pad 10 formed by the flat surface 10b and the surface opposite vertically to the inclined surface 15. It is noted that the guide pads 10 are positioned on the longitudinal wall 23, 25 so that the longitudinal flange 10b extends parallel to the end edges 23a, 23b, 25a, 25b of the inner face 230, 250.
Par ailleurs, la surface inclinée 15 est orientée de sorte que le plot de guidage 10 présente une dimension augmentant selon le sens d'insertion de l'élément chauffant 5 dans le logement 7 pour accompagner l'élément chauffant 5 en direction du bord d'extrémité 23a, 23b, 25a, 25b. Pour rappel, le sens d'insertion de l'élément chauffant 5 dans le logement 7 s'entend comme le sens allant depuis l'interface de connexion 100 vers la paroi de fond 21 du logement 7, comme cela est représenté par la flèche S sur la figure 3. Furthermore, the inclined surface 15 is oriented so that the guide pad 10 has a dimension increasing in the direction of insertion of the heating element 5 in the housing 7 to accompany the heating element 5 towards the edge of the housing. end 23a, 23b, 25a, 25b. As a reminder, the direction of insertion of the heating element 5 in the housing 7 is understood as the direction going from the connection interface 100 to the bottom wall 21 of the housing 7, as represented by the arrow S in Figure 3.
On peut prévoir que, pour un plot de guidage 10 donné, la surface inclinée 15 comprenne plusieurs pentes successives. Parmi les pentes successives, on voit que deux pentes adjacentes ne présentent pas un même angle d'inclinaison I. Bien entendu, sans sortir du cadre de l'invention, la surface inclinée 15 pourrait aussi présenter une unique pente évoluant de manière linéaire. Plus précisément, l'angle d'inclinaison I est mesuré par rapport au rebord longitudinal 10b du plot de guidage 10. Cet angle I représente donc la pente que suit l'élément chauffant 5 lors de son insertion. En présence d'une succession de pentes, chacune des pentes présente un angle d'inclinaison I inférieur à 45 degrés. Selon une réalisation, la surface inclinée 15 d'un plot de guidage 10 forme un angle d'inclinaison I compris entre 15 et 25 degrés avec le rebord longitudinal 10b. It can be provided that, for a given guide pad 10, the inclined surface 15 comprises several successive slopes. Among successive slopes, it is seen that two adjacent slopes do not have the same inclination angle I. Of course, without departing from the scope of the invention, the inclined surface 15 could also have a single slope evolving linearly. More specifically, the angle of inclination I is measured relative to the longitudinal flange 10b of the guide pad 10. This angle I represents the slope that follows the heating element 5 during its insertion. In the presence of a succession of slopes, each of the slopes has an inclination angle I of less than 45 degrees. According to one embodiment, the inclined surface 15 of a guide stud 10 forms an inclination angle I of between 15 and 25 degrees with the longitudinal flange 10b.
La figure 3 montre également que selon le sens d'insertion de l'élément chauffant 5 dans le logement 7, représenté par la flèche S, les deux plots de guidage 10 présentent chacun des surfaces inclinées 15 ayant des hauteurs H de plus en plus grandes, la hauteur H étant mesurée selon l'axe vertical V. La hauteur H d'une surface inclinée 15 est entendue comme étant la distance séparant le point le plus bas de la surface inclinée 15 et son point le plus haut. En d'autres termes, cela signifie que les plots de guidages 10 situées en entrée du logement 7, c'est-à-dire plus près de l'interface de connexion 100 que de la paroi de fond 21, présentent des surfaces inclinées 15 peu marquées par rapport aux plots de guidage 10 situés plus près de la paroi de fond 21. FIG. 3 also shows that according to the insertion direction of the heating element 5 in the housing 7, represented by the arrow S, the two guide pads 10 each have inclined surfaces 15 having heights H that are larger and larger the height H being measured along the vertical axis V. The height H of an inclined surface 15 is understood to be the distance between the lowest point of the inclined surface 15 and its highest point. In other words, this means that the guide pads 10 located at the inlet of the housing 7, that is to say closer to the connection interface 100 than the bottom wall 21, have inclined surfaces 15 little marked with respect to the guide pads 10 located closer to the bottom wall 21.
Par ailleurs, selon la direction d'insertion de l'élément chauffant 5, le plot de guidage 10 comprend une face plate 10c située dans le prolongement de la surface inclinée 15. Par face plate, il est entendu une surface s'étendant selon un plan longitudinal ou un plan vertical. Selon l'exemple de réalisation illustré par la figure 3, la face plate 10c se trouve dans le prolongement du point culminant de la surface inclinée 15 et s'étend dans un plan longitudinal défini par l'axe longitudinal L et l'axe transversal T. Autrement dit, la face plate 10c se situe en aval de la surface inclinée 15 selon le sens d'insertion de l'élément chauffant 5 dans le logement 7 et s'étend de manière parallèle aux bords d'extrémité 23a, 23b, 25a, 25b. Selon une variante de réalisation, la face plate 10c se trouve en amont de la surface inclinée 15 selon le sens d'insertion de l'élément chauffant 5 dans le logement 7 et s'étend dans un plan vertical défini par l'axe vertical V et l'axe transversal T. Bien entendu, le plot de guidage 10 pourrait comprendre une première face plate 10c située en amont de la surface inclinée 15 et une deuxième face plate 10c située en aval de la surface inclinéeMoreover, according to the direction of insertion of the heating element 5, the guide pad 10 comprises a flat face 10c located in the extension of the inclined surface 15. By flat face, it is understood a surface extending according to a longitudinal plane or a vertical plane. According to the embodiment illustrated in FIG. 3, the flat face 10c lies in the extension of the culminating point of the inclined surface 15 and extends in a longitudinal plane defined by the longitudinal axis L and the transverse axis T. In other words, the flat face 10c is located downstream of the inclined surface 15 in the direction of insertion of the heating element 5 into the housing 7 and extends parallel to the end edges 23a, 23b, 25a. , 25b. According to an alternative embodiment, the flat face 10c is upstream of the inclined surface 15 in the direction of insertion of the heating element 5 in the housing 7 and extends in a vertical plane defined by the vertical axis V and the transverse axis T. Of course, the guide pad 10 could comprise a first flat face 10c located upstream of the inclined surface 15 and a second flat face 10c located downstream of the inclined surface
15, l'amont et l'aval étant entendu selon le sens d'insertion de l'élément chauffant 5 dans le logement 7. 15, the upstream and downstream being understood in the direction of insertion of the heating element 5 in the housing 7.
On va maintenant décrire plusieurs agencements des plots de guidage 10 pour au moins un des logements 7 du cadre 3. Pour cela, on définit un axe longitudinal médian Mi s'étendant de manière parallèle aux deux bords d'extrémité 23a, 23b, 25a,Several arrangements of the guide pads 10 for at least one of the housings 7 of the frame 3 will now be described. For this purpose, a median longitudinal axis Mi extending parallel to the two end edges 23a, 23b, 25a, is defined.
25b d'une même face interne 230, 250 et à équidistance de ceux-ci. En d'autres termes, l'axe longitudinal médian Mi divise la paroi longitudinale 23, 25 en deux parties égales dont une première partie comprenant le premier bord d'extrémité 23a, 25a et une deuxième partie comprenant le deuxième bord d'extrémité 23b, 25b. 25b of the same internal face 230, 250 and equidistant thereof. In other words, the median longitudinal axis Mi divides the longitudinal wall 23, 25 in two equal parts including a first portion comprising the first end edge 23a, 25a and a second portion comprising the second end edge 23b, 25b.
Selon un premier exemple d'agencement illustré par la figure 3, le plot de guidage 10 situé en entrée du cadre 3, c'est-à-dire plus près de l'interface de connexion 100 que de la paroi de fond 21, est disposé en alternance avec une des nervures 6, 8 s'étendant à partir de la même paroi longitudinale 23, 25 que le plot de guidage 10. Plus précisément, le plot de guidage 10 est situé dans une zone Zi définie entre le deuxième bord d'extrémité 25b et l'axe longitudinal médian Mi de la face interne 250 de la deuxième paroi longitudinale 25, tandis qu'une nervure, ici une nervure de guidage 6, est située dans une zone Z2 définie entre l'axe longitudinal médian Ml et le premier bord d'extrémité 25a de la même face interne 250. En d'autres termes, on comprend que selon cet agencement les plots de guidage 10 sont disposés successivement avec les nervures 6, 8, qu'elles soient des nervures de guidage 6 ou de rigidifi cation 8, en alternance à proximité du premier bord d'extrémité 23a, 25a ou du deuxième bord d'extrémité 23b, 25b d'une même paroi longitudinale 23, 25. According to a first exemplary arrangement illustrated in FIG. 3, the guide stud 10 located at the entrance of the frame 3, that is to say closer to the connection interface 100 than the bottom wall 21, is disposed alternately with one of the ribs 6, 8 extending from the same longitudinal wall 23, 25 as the guide pad 10. More specifically, the guide pad 10 is located in a zone Zi defined between the second edge 25b end and the median longitudinal axis Mi of the inner face 250 of the second longitudinal wall 25, while a rib, here a guide rib 6, is located in a zone Z2 defined between the median longitudinal axis Ml and the first end edge 25a of the same inner face 250. In other words, it is understood that according to this arrangement the guide pads 10 are arranged successively with the ribs 6, 8, that they are guide ribs 6 or stiffening 8, alternately near the first edge end 23a, 25a or the second end edge 23b, 25b of the same longitudinal wall 23, 25.
Selon un deuxième exemple d'agencement illustré par la figure 4, les plots de guidage 10 sont disposés successivement en alternance avec les nervures 6, 8 et sur deux parois longitudinales opposées 23, 25. Plus précisément, chaque logement latéral 7 comprend un plot de guidage 10 situé dans une zone Z3 définie entre le deuxième bord d'extrémité 23b, 25b et l'axe longitudinal médian Mi de la face interne 230, 250, d'une des parois longitudinales 23, 25 tandis qu'une nervure, ici une nervure de guidage 6, est située dans une zone Z4 définie entre l'axe longitudinal médian Mi et le premier bord d'extrémité 23a, 25a de la face interne 230, 250 de la paroi longitudinale opposée 23, 25. En d'autres termes, on comprend que selon cet agencement les plots de guidage 10 sont disposés successivement avec les nervures 6, 8, qu'elles soient des nervures de guidage 6 ou de rigidifi cation 8, en alternance à proximité du premier bord d'extrémité 23a, 25a ou du deuxième bord d'extrémité 23b, 25b de deux parois longitudinales opposées 23, 25 pour un même logement 7. Concernant le logement central 7, le plot de guidage 10 est situé dans la zone Z4 définie entre l'axe longitudinal médian Mi et le premier bord d'extrémité 25a de la face interne 250 de la deuxième paroi longitudinale 25 tandis qu'une nervure de rigidification 8 successive au plot de guidage 10, selon le sens d'insertion représenté par la flèche S, est située dans une zone Z3 définie entre le deuxième bord d'extrémité 23b de la première paroi longitudinale 23 et l'axe longitudinal médian Mi de cette paroi 23. Selon une variante de réalisation de ce deuxième agencement, les nervures 6, 8 sont remplacées par d'autres plots de guidage 10 de manière à ce que les plots de guidage soient disposés en alternance dans les zones Z3, Z4 sur les parois longitudinales 23, 25 opposées. En d'autres termes, on comprend que les plots de guidage 10 sont disposés en alternance sur la première et la deuxième paroi longitudinale 23, 25 tout en étant également disposées en alternance à proximité du premier bord d'extrémité 23a, 25a ou du deuxième bord d'extrémité 23b, 25b. Les plots de guidage 10 disposés selon cet agencement présentent une surface inclinée 15 ayant une pente augmentant selon le sens d'insertion de l'élément chauffant 5 dans le logement 7. Selon un troisième exemple d'agencement illustré par la figure 5, une même paroi longitudinale 23, 25 comprend au moins deux plots de guidage 10 disposés successivement un à un selon le sens d'insertion. Selon l'exemple illustré, et selon le sens d'insertion de l'élément chauffant 5 représenté par la flèche S, un premier plot de guidage 10 se situe dans la zone Z5 définie entre le premier bord d'extrémité 25a et l'axe longitudinal médian Mi de la face interne 250, et un deuxième plot de guidage se situe dans une zone Z6 définie entre l'axe longitudinal médian M 1 et le deuxième bord d'extrémité 25b de la même face interne 250. En présence d'un troisième plot de guidage 10, celui-ci serait situé, selon cet agencement, dans la zone Z5 opposée à la zone Z6 où est situé le deuxième plot 10. On va maintenant décrire le montage du dispositif de chauffage électrique 1 comprenant le cadre 3 selon l'invention, en référence avec la figure 2. On comprendra que le montage décrit ci-après est sensiblement similaire pour chacun des agencements des plots de guidage 10 dans le cadre 3 et des variantes de réalisation possibles de ces agencements. On réalise dans un premier temps l'insertion des éléments chauffants 5 dans les logements appropriés 7 à l'intérieur du compartiment de chauffe 30. Pour cela, on insère les éléments chauffants 5 par l'ouverture 50 formée à une extrémité du cadre 3, et on fait glisser les éléments chauffants 5 en translation vers la paroi de fond 21 du logement 7, notamment selon le sens d'insertion matérialisé par la flèche S. Au passage des plots de guidage 10 et plus particulièrement au contact de la surface inclinée 15, les éléments chauffants 5 et notamment les éléments radiants 53 tournés vers la surface inclinées 15 sont déviés de leur trajectoire initiale et sont guidés en direction du bord d'extrémité 23a, 23b, 25a, 25b opposé à la surface inclinée 15. En raison de la rigidité des éléments chauffants 5 et de la pente douce de la surface inclinée 15 des plots de guidage 10, les éléments chauffants 5 ne sont pas déformés et les efforts d'insertion sont réduits par rapport aux efforts d'insertion nécessaires pour passer des moyens de déformation plastique de l'art antérieur. According to a second example of an arrangement illustrated in FIG. 4, the guide pads 10 are successively arranged in alternation with the ribs 6, 8 and on two opposite longitudinal walls 23, 25. More specifically, each lateral housing 7 comprises a stud of FIG. 10 located in an area Z3 defined between the second end edge 23b, 25b and the median longitudinal axis Mi of the inner face 230, 250, of one of the longitudinal walls 23, 25 while a rib, here a guide rib 6, is located in a zone Z4 defined between the median longitudinal axis Mi and the first end edge 23a, 25a of the inner face 230, 250 of the opposite longitudinal wall 23, 25. In other words it is understood that according to this arrangement the guide pads 10 are arranged successively with the ribs 6, 8, whether they are guide ribs 6 or stiffening 8, alternately near the first end edge 23a, 25a or the second edge of end 23b, 25b of two opposite longitudinal walls 23, 25 for the same housing 7. Concerning the central housing 7, the guide pad 10 is located in the zone Z4 defined between the median longitudinal axis Mi and the first edge of end 25a of the inner face 250 of the second longitudinal wall 25 while a rib of 8 successive stiffening of the guide pad 10, in the direction of insertion represented by the arrow S, is located in a zone Z3 defined between the second end edge 23b of the first longitudinal wall 23 and the median longitudinal axis Mi of this wall 23. According to an alternative embodiment of this second arrangement, the ribs 6, 8 are replaced by other guide pads 10 so that the guide pads are arranged alternately in the zones Z3, Z4 on the longitudinal walls 23, 25 opposite. In other words, it is understood that the guide pads 10 are alternately arranged on the first and second longitudinal walls 23, 25 while also being alternately arranged near the first end edge 23a, 25a or the second end edge 23b, 25b. The guide pads 10 arranged in this arrangement have an inclined surface 15 having a slope increasing in the direction of insertion of the heating element 5 in the housing 7. According to a third example of an arrangement illustrated in FIG. longitudinal wall 23, 25 comprises at least two guide pads 10 arranged successively one by one in the direction of insertion. According to the illustrated example, and in the direction of insertion of the heating element 5 represented by the arrow S, a first guide pad 10 is located in the zone Z5 defined between the first end edge 25a and the axis longitudinal median Mi of the inner face 250, and a second guide pad is located in a zone Z6 defined between the median longitudinal axis M 1 and the second end edge 25b of the same inner face 250. In the presence of a third guide pad 10, it would be located, according to this arrangement, in the zone Z5 opposite to the zone Z6 where is located the second pad 10. We will now describe the mounting of the electric heating device 1 comprising the frame 3 according to the invention, with reference to Figure 2. It will be understood that the assembly described below is substantially similar for each of the arrangements of the guide pads 10 in the frame 3 and possible variants of these arrangements. The insertion of the heating elements 5 in the appropriate housings 7 inside the heating compartment 30 is first carried out. For this, the heating elements 5 are inserted through the opening 50 formed at one end of the frame 3. and sliding the heating elements 5 in translation to the bottom wall 21 of the housing 7, in particular in the direction of insertion shown by the arrow S. At the passage of the guide pads 10 and more particularly in contact with the inclined surface 15 , the heating elements 5 and in particular the inclined surface-facing radiating elements 15 are deviated from their initial trajectory and are guided in the direction of the end edge 23a, 23b, 25a, 25b opposite to the inclined surface 15. Due to the rigidity of the heating elements 5 and the gentle slope of the inclined surface 15 of the guide pads 10, the heating elements 5 are not deformed and the insertion forces are reduced compared to the insertion forces necessary to pass means plastic deformation of the prior art.
Selon l'exemple de réalisation illustré par la figure 2, l'insertion des éléments chauffant 5 se poursuit jusqu'à ce qu'ils rencontrent les nervures de guidage 6 situées sur le bord d'extrémité 23a, 23b, 25a, 25b opposé à la surface inclinée 15 du premier plot de guidage 10, selon le sens d'insertion. Ces nervures de guidage 6 empêchent les éléments chauffants 5 de sortir de leur chemin d'insertion et l'insertion se poursuit jusqu'à la paroi de fond 21. According to the embodiment illustrated in Figure 2, the insertion of the heating elements 5 continues until they meet the guide ribs 6 located on the end edge 23a, 23b, 25a, 25b opposite to the inclined surface 15 of the first guide pad 10, according to the direction of insertion. These guide ribs 6 prevent the heating elements 5 from leaving their insertion path and the insertion continues to the bottom wall 21.
Une fois insérés, les éléments chauffants 5 restent au contact du point culminant des plots de guidage 10. Dans cette position, les éléments chauffants 5 sont contraints dans leur logement 7 à la fois par les plots de guidage 10 et par la nervure 6, 8 opposée permettant ainsi d'éviter tout jeu existant. Once inserted, the heating elements 5 remain in contact with the culminating point of the guide pads 10. In this position, the heating elements 5 are constrained in their housing 7 at the same time by the guide pads 10 and the rib 6, 8 opposite, thus avoiding any existing game.
Il est particulièrement avantageux, dans un processus industrialisé de montage du dispositif de chauffage électrique, que les efforts d'insertion soient limités, afin que le robot amené à réaliser l'insertion de l'élément chauffant dans le logement correspondant ne se mette pas en position de sécurité sous l'effet d'un effort jugé trop important. Lorsque tous les éléments chauffants 5 sont insérés partiellement dans le compartiment de chauffe 30, avec environ 75% des éléments chauffants poussés dans le logement, le compartiment de chauffe est amené en regard de l'interface de connexion. It is particularly advantageous, in an industrialized process of mounting the electric heater, that the insertion forces are limited, so that the robot brought to achieve the insertion of the heating element in the corresponding housing does not start. position of safety under the effect of an effort deemed too important. When all the heating elements 5 are partially inserted in the heating compartment 30, with about 75% of the heating elements pushed into the housing, the heating compartment is brought opposite the connection interface.
L'interface de connexion 100 est alors disposée à une extrémité du compartiment de chauffe 30 et permet le raccordement du dispositif de chauffage électrique 1 à un réseau électrique du véhicule. Le dispositif de chauffage 1 est ensuite inséré dans un conduit de l'installation de chauffage-ventilation et/ou climatisation. 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 1 dans lequel les éléments chauffants 5 sont facilement insérés et ne débattent pas à l'intérieur de leur logement. De plus, les plots de guidage 10, rigides, ne risquent pas de casser sous l'effet des vibrations du véhicule lors du roulage. The connection interface 100 is then disposed at one end of the heating compartment 30 and allows the connection of the electric heater 1 to an electrical network of the vehicle. The heating device 1 is then inserted into a duct of the heating-ventilation and / or air-conditioning system. The foregoing description clearly explains how the invention makes it possible to achieve the objectives which it has set itself and in particular to propose a heating device 1 in which the heating elements 5 are easily inserted and do not debate inside the device. their housing. In addition, the guide pads 10, rigid, are not likely to break under the effect of vibration of the vehicle during travel.
L'invention telle qu'elle vient d'être décrite ne saurait se limiter aux moyens et configurations exclusivement décrits et illustrés, et s'applique également à tous moyens ou configurations, équivalents et à toute combinaison de tels moyens ou configurations. De même, si l'invention a été ici décrite selon des variantes de réalisation mettant en œuvre chacune séparément un type d'agencement des plots de guidage, il va de soi que les différents agencements présentés peuvent être combinés sans que cela nuise à l'invention. The invention as just described can not be limited to the means and configurations exclusively described and illustrated, and also applies to any means or configurations, equivalents and any combination of such means or configurations. Similarly, if the invention has been described here according to alternative embodiments each implementing separately a type of arrangement of the guide pads, it goes without saying that the different arrangements presented can be combined without this adversely affecting the invention.

Claims

REVENDICATIONS
1. Cadre (3) d'un dispositif de chauffage électrique (1) d'un flux d'air circulant à l'intérieur d'une installation de ventilation, de chauffage et/ou de climatisation d'un véhicule automobile, ledit cadre (3) comprenant au moins un compartiment de chauffe (30) présentant au moins un logement (7) destiné à recevoir un élément chauffant (5), le logement (7) étant défini par deux parois longitudinales (23, 25) délimitant transversalement un chemin d'insertion pour l'élément chauffant (5), chaque paroi longitudinale (23, 25) comprenant une face interne (230, 250) orientée vers le chemin d'insertion, chaque face interne (230, 250) étant délimitée par deux bords d'extrémité (23a, 23b, 25a, 25b) s'étendant longitudinalement, avec un premier bord d'extrémité (23a, 23b, 25a, 25b) situé à l'opposé d'un deuxième bord d'extrémité (23a, 23b, 25a, 25b), 1. Frame (3) of an electric heating device (1) of a flow of air circulating inside a ventilation, heating and / or air-conditioning system of a motor vehicle, said frame (3) comprising at least one heating compartment (30) having at least one housing (7) for receiving a heating element (5), the housing (7) being defined by two longitudinal walls (23, 25) transversely delimiting a insertion path for the heating element (5), each longitudinal wall (23, 25) comprising an inner face (230, 250) facing the insertion path, each inner face (230, 250) being delimited by two longitudinally extending end edges (23a, 23b, 25a, 25b) with a first end edge (23a, 23b, 25a, 25b) opposite a second end edge (23a, 23b, 25a, 25b),
caractérisé en ce qu'au moins un plot de guidage (10) s'étend en saillie d'au moins une des faces internes (230, 250), ledit plot de guidage (10) comprenant une surface inclinée de guidage (15) destinée à venir au contact de l'élément chauffant (5), ladite surface inclinée de guidage (15) étant agencée pour guider l'élément chauffant (5) en direction d'un des bords d'extrémité (23a, 23b, 25a, 25b) délimitant la face interne (230, 250) à partir de laquelle ledit plot de guidage (10) s'étend.  characterized in that at least one guide lug (10) projects from at least one of the inner faces (230, 250), said guide lug (10) comprising an inclined guide surface (15) for coming into contact with the heating element (5), said inclined guide surface (15) being arranged to guide the heating element (5) towards one of the end edges (23a, 23b, 25a, 25b ) delimiting the inner face (230, 250) from which said guide pad (10) extends.
2. Cadre selon la revendication 1, caractérisé en ce qu'une partie du plot de guidage (10) est située à l'intérieur du chemin d'insertion de l'élément chauffant (5), ladite partie du plot de guidage (10) étant destinée à venir au contact de l'élément chauffant (5).  2. Frame according to claim 1, characterized in that a portion of the guide pad (10) is located inside the insertion path of the heating element (5), said portion of the guide pad (10). ) being intended to come into contact with the heating element (5).
3. Cadre selon la revendication 1 ou 2, caractérisé en ce que la surface inclinée de guidage (15) est orientée de sorte que le plot de guidage (10) présente une dimension augmentant selon un sens d'insertion (S) de l'élément chauffant (5) dans le logement (7). 3. Frame according to claim 1 or 2, characterized in that the inclined guide surface (15) is oriented so that the guide pad (10) has an increasing dimension in a direction of insertion (S) of the heating element (5) in the housing (7).
4. Cadre selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface inclinée de guidage (15) présente un angle d'inclinaison (I) inférieur à 45 degrés. 4. Frame according to any one of the preceding claims, characterized in that the inclined guide surface (15) has an inclination angle (I) less than 45 degrees.
5. Cadre selon l'une quelconque des revendications précédentes, caractérisé en ce que deux parois longitudinales (23, 25), dont une première paroi longitudinale (23, 25) et une deuxième paroi longitudinale (23, 25), délimitant le même logement (7) comprennent chacune au moins un plot de guidage (10), lesdits plots de guidage (10) étant disposés successivement un à un selon le sens d'insertion : 5. Frame according to any one of the preceding claims, characterized in that two longitudinal walls (23, 25), including a first wall longitudinal (23, 25) and a second longitudinal wall (23, 25) delimiting the same housing (7) each comprise at least one guide pad (10), said guide pads (10) being successively arranged one by one according to the direction of insertion:
- dans une zone (Z3, Z4) définie entre le premier bord d'extrémité (23a, 23b, 25a, 25b) de la face interne (230, 250) de la première paroi longitudinale (23) et un axe longitudinal médian (Mi) de la face interne (230, 250) de la première paroi longitudinale (23), et  in a zone (Z3, Z4) defined between the first end edge (23a, 23b, 25a, 25b) of the inner face (230, 250) of the first longitudinal wall (23) and a median longitudinal axis (Mi ) of the inner face (230, 250) of the first longitudinal wall (23), and
- dans une zone (Z3, Z4) définie entre un axe longitudinal médian (Mi) de la face interne (230, 250) de la deuxième paroi longitudinale (23, 25) et le deuxième bord d'extrémité (23a, 23b, 25a, 25b) de la face interne (230, 250) de la deuxième paroi longitudinale (23, 25).  in a zone (Z3, Z4) defined between a median longitudinal axis (Mi) of the inner face (230, 250) of the second longitudinal wall (23, 25) and the second end edge (23a, 23b, 25a); , 25b) of the inner face (230, 250) of the second longitudinal wall (23, 25).
6. Cadre selon l'une quelconque des revendications précédentes, caractérisé en ce qu'une même paroi longitudinale (23, 25) comprend au moins deux plots de guidage (10) disposés successivement un à un selon le sens d'insertion : 6. Frame according to any one of the preceding claims, characterized in that a same longitudinal wall (23, 25) comprises at least two guide pads (10) arranged successively one by one in the direction of insertion:
- dans une zone (Z5, Z6) définie entre le premier bord d'extrémité (23a, 23b, 25a, 25b) et un axe longitudinal médian (Mi) de la face interne (230, 250), et in a zone (Z5, Z6) defined between the first end edge (23a, 23b, 25a, 25b) and a median longitudinal axis (Mi) of the inner face (230, 250), and
- dans une zone (Z5, Z6) définie entre l'axe longitudinal médian (Mi) et le deuxième bord d'extrémité (23a, 23b, 25a, 25b) de la même face interne (230, 250). in a zone (Z5, Z6) defined between the median longitudinal axis (Mi) and the second end edge (23a, 23b, 25a, 25b) of the same internal face (230, 250).
7. Cadre selon l'une quelconque des revendications 1 à 5, caractérisé en ce qu'il comprend des nervures (6, 8) délimitant verticalement le chemin d'insertion pour l'élément chauffant (5), les nervures (6, 8) s'étendant dans un plan transversal aux parois longitudinales (23, 25), et en ce qu'au moins un plot de guidage (10) est disposé successivement, selon le sens d'insertion, en alternance avec les nervures (6,8), de telle manière qu'un plot de guidage (10) est situé dans une zone (Z3, Z4) définie entre le premier bord d'extrémité (23a, 23b, 25a, 25b) et un axe longitudinal médian (Mi) de la face interne (230, 250) d'une paroi longitudinale (23, 25) et au moins une des nervures (6, 8) est située dans une zone (Z3, Z4) définie entre l'axe longitudinal médian (Mi) et le deuxième bord d'extrémité (23a, 23b, 25a, 25b) de la même face interne (230, 250) ou de la face interne (230, 250) de la paroi longitudinale (23, 25) opposée d'un même logement (7). 7. Frame according to any one of claims 1 to 5, characterized in that it comprises ribs (6, 8) defining vertically the insertion path for the heating element (5), the ribs (6, 8). ) extending in a plane transverse to the longitudinal walls (23, 25), and in that at least one guide pad (10) is arranged successively, in the direction of insertion, alternately with the ribs (6, 8), such that a guide pad (10) is located in a zone (Z3, Z4) defined between the first end edge (23a, 23b, 25a, 25b) and a median longitudinal axis (Mi) of the inner face (230, 250) of a longitudinal wall (23, 25) and at least one of the ribs (6, 8) is located in a zone (Z3, Z4) defined between the median longitudinal axis (Mi) and the second end edge (23a, 23b, 25a, 25b) of the same inner face (230, 250) or the inner face (230, 250) of the opposite longitudinal wall (23, 25) of the same housing (7).
8. Cadre selon l'une quelconque des revendications précédentes, caractérisé en ce qu'il comporte une pluralité de plots de guidage (10) ménagés dans un même logement (7) et en ce que, selon le sens d'insertion (S) d'un élément chauffant (5) dans le logement (7), les plots de guidage (10) présentent des surfaces inclinées de guidage (15) ayant des hauteurs (H) de plus en plus grandes. 8. Frame according to any one of the preceding claims, characterized in that it comprises a plurality of guide pads (10) formed in the same housing (7) and in that, in the direction of insertion (S) of a heating element (5) in the housing (7), the guide pads (10) have inclined guide surfaces (15). ) having heights (H) larger and larger.
9. Cadre selon l'une quelconque des revendications précédentes, caractérisé en ce que le plot de guidage (10) comprend une face plate (10c) située dans le prolongement de la surface inclinée (15), selon la direction d'insertion de l'élément chauffant (5). 9. Frame according to any one of the preceding claims, characterized in that the guide pad (10) comprises a flat face (10c) located in the extension of the inclined surface (15), in the direction of insertion of the heating element (5).
10. Dispositif de chauffage électrique (1) comprenant au moins un élément chauffant (5) caractérisé en ce qu'il comprend un cadre (3) tel que défini selon l'une quelconque des revendications précédentes dans lequel l'au moins un élément chauffant (5) est disposé. Electrical heating device (1) comprising at least one heating element (5), characterized in that it comprises a frame (3) as defined according to any one of the preceding claims wherein the at least one heating element (5) is arranged.
PCT/FR2018/051476 2017-06-28 2018-06-20 Frame of an electric heating device comprising guide blocks with an inclined surface WO2019002723A1 (en)

Applications Claiming Priority (2)

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FR1755980 2017-06-28
FR1755980A FR3068441B1 (en) 2017-06-28 2017-06-28 FRAME OF AN ELECTRIC HEATING DEVICE INCLUDING GUIDE PLATES HAVING AN INCLINED SURFACE

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WO2019002723A1 true WO2019002723A1 (en) 2019-01-03
WO2019002723A9 WO2019002723A9 (en) 2019-03-07

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954469A1 (en) * 2009-12-23 2011-06-24 Valeo Systemes Thermiques Method for assembling electric heating device utilized in warm air flow conduit downstream to exchanger to heat air for heating, defogging and defrosting compartment of motor vehicle, involves fixing frame and control case
WO2011076834A2 (en) * 2009-12-23 2011-06-30 Valeo Systemes Thermiques Electric heating device and corresponding heating appliance

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2954469A1 (en) * 2009-12-23 2011-06-24 Valeo Systemes Thermiques Method for assembling electric heating device utilized in warm air flow conduit downstream to exchanger to heat air for heating, defogging and defrosting compartment of motor vehicle, involves fixing frame and control case
WO2011076834A2 (en) * 2009-12-23 2011-06-30 Valeo Systemes Thermiques Electric heating device and corresponding heating appliance

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WO2019002723A9 (en) 2019-03-07
FR3068441A1 (en) 2019-01-04
FR3068441B1 (en) 2020-01-17

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