• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    This heating member (30) is adapted to be arranged facing and at a distance from an upstream face (12) or downstream (14) of a body (10) for purifying the exhaust gas of a vehicle. It comprises a fixing ring (40) comprising an electrically conductive frame (42) having a geometric center (G), a central support (64) disposed substantially at the geometric center (G) of the frame (42), and a plurality of elongate heating elements (74) each having first and second ends (76, 78) opposite to each other, the first end (76) being connected to the frame (42) and the second end (78) being connected to the central support (64). The fixing ring (40) further comprises a plurality of electrically conductive radial projections (44) distributed around the frame (42) and each protruding outwardly from the frame (42).
    公开号:FR3077330A1
    申请号:FR1850861
    申请日:2018-02-01
    公开日:2019-08-02
    发明作者:Pierre Francois Bartolo Xavier；Christophe Tournier
    申请人:Faurecia Systemes dEchappement SAS；
    IPC主号:
    专利说明:

    Easy-to-use heating device for a vehicle exhaust gas purification device
    The present invention relates to a heating member for a device for purifying the exhaust gases of a vehicle, adapted to be placed opposite and at a distance from an upstream or downstream face of an exhaust gas purification member. of a vehicle, said heating member being of the type comprising a fixing ring comprising an electrically conductive frame having a geometric center, the heating member further comprising a central support disposed substantially at the geometric center of the frame, and a plurality of 'elongated heating elements forming at least one layer permeable to exhaust gases, each elongated heating element having first and second ends opposite to each other, the first end being linked to the frame and the second end being linked to the support central.
    The invention also relates to a device for supplying an exhaust gas purification device and a device for purifying vehicle exhaust gases comprising such a heating device.
    The exhaust lines of vehicles fitted with thermal engines typically comprise catalytic purification members, making it possible for example to convert NOx, CO and hydrocarbons to N 2 , CO 2 and H 2 O. Such bodies are only effective when the catalytic material is at a minimum temperature.
    WO2016 / 066551 describes a purification device in which a heating member is mounted opposite the upstream face of a catalyst. The heating element has a heating wire, fixed by pins driven into the channels of the catalyst.
    Such fixing is difficult to achieve at high speed.
    Furthermore, such a system restricts the choice of catalyst to be integrated (type of substrate, impregnation, etc.)
    In this context, the invention aims to propose a heating member for a device for purifying the exhaust gases of a vehicle which is easier to handle, in particular easier to mount on a device for purifying exhaust gases. . Other objectives are that the heating element can be easily standardized and easily transported, compactly, without risk of deterioration, that it can be easily integrated into any type of existing exhaust gas purification device, which 'It has a very limited impact on the size of the exhaust line, it can be achieved by an automated process and it allows optimal and rapid heating of the purification device.
    To this end, the subject of the invention is a heating member of the aforementioned type, in which the fixing ring further comprises a plurality of electrically conductive radial projections distributed around the frame, each radial projection projecting from the frame in one direction. opposite the geometric center of the frame.
    According to particular embodiments of the invention, the heating element also has one or more of the following characteristics, taken alone or according to any technically possible combination (s):
    - each elongated heating element is brazed or welded to the frame;
    - The frame has an internal face oriented towards the geometric center, an external face oriented opposite the geometric center, and a plurality of through orifices each opening into said internal and external faces, each elongated heating element being engaged in at least one of said through holes;
    - The frame comprises a slice joining the internal face to the external face and, for each through orifice, a slit is formed in said slice, the slit extending from the internal face to the external face and opening into the orifice crossing;
    the through orifices comprise, for each elongated heating element, a primary orifice and two secondary orifices, the secondary orifices being close to one another and distant from the primary orifice, the secondary orifices being separated from one another by a frame portion, the first end of the elongated heating element extending through the primary orifice and forming a loop around the frame portion;
    - the secondary orifices are specific to the elongated heating element, the primary orifice being shared with another elongated heating element;
    - each elongated heating element is formed by a metal wire;
    - The central support consists of a washer made of a conductive material, preferably metal, for example copper, stainless steel, nickel chrome alloy or iron chrome aluminum alloy;
    the washer comprises a first large face and a second large face opposite one another, and a plurality of holes opening into each of said large faces, the second end of each elongated heating element being bent in the shape of a hook and engaged in one of said holes;
    - For each drilling, the second ends of two elongated heating elements are engaged in said drilling;
    - the holes are arranged substantially in a circle substantially centered on the center of the washer; and
    - the washer is annular.
    The subject of the invention is also a supply member for a device for purifying the exhaust gases of a vehicle, the supply member comprising:
    an envelope of an electrically conductive material, said envelope having an upstream face through which the exhaust gases penetrate into the supply member and a downstream face through which the exhaust gases exit from the supply member, and a heating member as defined above, housed in the envelope, facing the downstream face, the heating member being mounted in said envelope so that each radial projection is in contact with the envelope.
    According to particular embodiments of the invention, the supply member also has one or more of the following characteristics, taken in isolation or according to any technically possible combination (s):
    the supply member comprises an electrical supply and an electrode electrically connecting the central support to a first terminal of said electrical supply, said electrode extending through the envelope being electrically isolated from said envelope, the envelope being electrically connected to a second terminal of the power supply or to ground;
    - the central support is screwed, welded or brazed to the electrode; and
    - the heating element is welded, brazed or force-fitted into the casing.
    The subject of the invention is also a device for purifying the exhaust gases of a vehicle comprising at least one member for purifying the exhaust gases having an upstream face through which the exhaust gases penetrate into the member for purifying and a downstream face by which the exhaust gases exit from the purification member, the purification device further comprising at least one supply member as defined above arranged so as to substantially coincide the downstream face of the envelope of said supply member with the upstream face of the purification member.
    Other characteristics and advantages of the invention will appear on reading the description which follows, given solely by way of example and made with reference to the appended drawings, in which:
    FIG. 1 is a simplified schematic representation of a motor vehicle exhaust line incorporating an exhaust gas purification device according to the invention,
    FIG. 2 is a perspective view of a supply member for a device for purifying the exhaust line of FIG. 1,
    FIG. 3 is a perspective view, from the side, of a heating member of the feed member of FIG. 2, and
    - Figure 4 is a front view of a detail of the heater of Figure 3.
    The exhaust line 1 shown in FIG. 1 is intended to be installed on board a vehicle, typically of a vehicle equipped with a heat engine 3. This vehicle is typically a motor vehicle, for example a car or a truck.
    As visible in FIG. 1, the exhaust line 1 comprises a manifold 5 capturing the exhaust gases leaving the combustion chambers of the heat engine 3, and a cannula 7 allowing the release of the exhaust gases into the atmosphere. The exhaust line 1 also includes a device 9 for purifying the exhaust gases, fluidly interposed between the manifold 5 and the cannula 7, so that the exhaust gases reaching the cannula 7 have been purified by said device. purification 9.
    This purification device 9 comprises at least one member 10 for purifying the exhaust gases having an upstream face 12 through which the exhaust gases penetrate into the purification member 10, and a downstream face 14 through which the exhaust gases exhaust come out of the purification device 10.
    In the present description, the upstream and downstream are understood relative to the normal direction of circulation of the exhaust gases in the exhaust line 1.
    The purification member 10 is for example an SCR catalyst, a three-way catalyst, an oxidation catalyst, an SCRF particle filter, or a NOx trap. It has an axis of symmetry (not shown).
    The purification device 9 also comprises a sheath 16 inside which the purification member 10 is placed, and a retaining ply 18 interposed between the purification member 10 and the sheath 16.
    The purification device 9 also comprises a supply member 20, for supplying the purification member 10 with the exhaust gases from the manifold 5, and a collection member 22, for collecting the exhaust gases purified out of the purification member 10 and direct them to the cannula 7.
    The feed member 20 is typically constituted by an inlet cone or by a mixer. It is fluidly interposed between the manifold 5 and the purification member 10, and comprises an exhaust gas inlet 24 fluidly connected to the manifold 5.
    The collecting member 22 is typically constituted by an outlet cone. It is fluidly interposed between the purification member 10 and the cannula 7, and comprises an exhaust gas outlet 26 fluidly connected to the cannula 7.
    The supply member 20 more particularly comprises a casing 28 made of electrically conductive material, delimiting a passage for the exhaust gases, and a heating member 30 housed in the casing 28. The feed member 20 also comprises a power supply 32 with a first terminal 33A and a second terminal 33B for supplying the heating member 30 with electricity.
    The casing 28 is electrically connected to the first terminal 33A of the power supply 32, typically by means of an electrical connection formed by a threaded rod welded to the casing 28. As a variant (not shown), the casing 28 is electrically connected to ground using the same type of electrical connection.
    As visible in Figure 1, the casing 28 has an upstream face 34 through which the exhaust gases penetrate into the supply member 20, and a downstream face 36 through which the exhaust gases exit from the member supply 20. The casing 28 is adapted to guide the gases entering through the upstream face 34 to the downstream face 36. The supply member 20 is disposed relative to the purification member 10 so that the downstream face 36 of the casing 28 substantially coincides with the upstream face 12 of the purification member 10.
    The casing 28 is fixed to the sheath 16, typically by welding, riveting or screwing.
    The casing 28 is tubular and centered on an axis C connecting the upstream face 34 to the downstream face 36. This axis C is substantially coincident with the axis of symmetry of the purification member 10.
    As shown in Figure 2, the casing 28 constitutes a structural part adapted to undergo the mechanical stresses specific to an exhaust line without deforming.
    The casing 28 is here cylindrical of revolution. Alternatively, the casing 28 has a polygonal radial section. In another variant, the envelope 28 is frustoconical.
    As can be seen in FIG. 2, the supply member 20 can also be adapted to mix the exhaust gases with an additive, such as AdBlue® in the case where the purification member 10 is of the SCR type or SCRF.
    With reference to FIG. 2, the heating member 30 is housed in the casing 28 opposite the downstream face 36, slightly recessed towards the inside of the supply member 20 relative to this downstream face 36 By "slightly recessed", it is understood that the heating member 30 is at a distance from the downstream face 36 between 1 and 50 mm. The heating member 30 is thus placed opposite and at a distance from the upstream face 12 of the purification member 10.
    As an alternative (not shown), the heating member 30 is housed in the casing 28 opposite the upstream face 34, slightly retreating towards the inside of the supply member 20 relative to this upstream face 34 .
    The heating member 30 is substantially planar, that is to say that it has an axial thickness of less than 20%, and preferably less than 10% of its radial diameter.
    The heating member 30 comprises a fixing ring 40. This fixing ring 40 comprises an electrically conductive frame 42 having a geometric center G, and a plurality of electrically conductive radial projections 44 distributed around the frame 42, each radial projection 44 forming protruding from the frame 42 in a direction opposite to the geometric center G of the frame 42.
    The center G is substantially aligned with the axis C, that is to say that the center G is at a distance from the axis C less than 10 mm, advantageously less than 5 mm.
    With reference to FIG. 3, the frame 42 has an internal face 50 oriented towards the geometric center G, an external face 52 oriented opposite the geometric center G, and two opposite sections 54, 55 each joining the internal face 50 to the outer face 52.
    The frame 42 also has a plurality of through orifices 56, 58 each opening into said internal and external faces 50, 52. These through orifices 56, 58 include primary orifices 56 and secondary orifices 58 distributed along the frame 42 so that, for each pair of successive primary orifices 56, four secondary orifices 58 are interposed between these primary orifices 56.
    Each primary orifice 56 is substantially aligned radially with a respective radial projection 44.
    The secondary orifices 58 are distributed in pairs, each pair being surrounded circumferentially by a primary orifice 56 and a secondary orifice 58, the secondary orifices 58 of the same pair being close to each other and distant from the primary orifice 56 and the secondary orifice 58 which circumferentially surround this pair.
    The secondary orifices 58 of the same pair are thus separated from each other by a relatively narrow frame portion 60.
    The frame 42 also has, for each through orifice 56, 58, a slot 62 formed in the edge 54, said slot 62 extending from the internal face 50 to the external face 52, and opening into the through orifice 56 , 58.
    For each primary port 56, the corresponding slot 62 is centered on said primary port 56. For each secondary port 58, the corresponding slot 62 is offset in the circumferential direction away from the secondary port 58 belonging to the same pair.
    The frame 42 is thin, that is to say that it has a thickness, taken between the edge 54 and the opposite edge 55, less than 10% of the diameter of the frame 42.
    The frame 42 is in particular with a closed contour.
    Each radial projection 44 advantageously comes integrally with the frame 42. It is typically constituted by a lug formed in one piece with the frame 42 and folded relative to the frame 42 so as to protrude towards the outside of the frame 42.
    The fixing ring 40 is welded, brazed or force-fitted into the casing 28 so that each radial projection 44 is in contact with the casing 28. Thus, the fixing ring 40, and in particular its frame 42, is substantially the same electrical potential as the casing 28.
    Returning to FIG. 2, the heating member 30 also comprises a central support 64 disposed substantially at the geometric center G of the frame 42.
    The central support 64 has a diameter less than 20% of the diameter of the frame 42.
    The central support 64 is electrically connected to the second terminal 33B of the power supply 32 by an electrode 65 extending through the casing 28 while being electrically isolated from the latter. The central support 64 is in particular linked to said electrode 65 by screwing, welding, soldering, or any other suitable means.
    The electrode 65 is rigidly fixed to the casing 28.
    Referring to Figure 4, the central support 64 consists of a washer 66 of conductive material, preferably metal, for example copper, stainless steel, nickel chrome alloy or iron chrome aluminum alloy.
    This washer 66 is here annular.
    The washer 66 comprises a first large face 68 and a second large face 70 opposite one another, and a plurality of holes 72 opening into each of said large faces 68, 70. These holes 72 are arranged substantially in a substantially circle centered on the center of the washer 66.
    Returning to Figure 2, the heater 30 further comprises a plurality of elongated heating elements 74 forming at least one layer permeable to exhaust gases.
    The elongated heating elements 74 here form a thin wafer not exceeding the frame 42 along the axis C.
    Each elongated heating element 74 has a first end 76 and a second end 78 opposite one another. The first end 76 is linked to the frame 42, and the second end 78 is linked to the central support 64.
    The first end 76 is thus electrically connected to the first terminal 33A of the power supply 32, and the second end 78 is electrically connected to the second terminal 33B of the power supply 32. It therefore exists when the power supply 32 is active, an electrical potential difference between the first end 76 and the second end 78 of each elongated heating element 74. This electrical potential difference is a function of the potential difference between the terminals 33A, 33B of the power supply 32 .
    Referring to Figure 3, the first end 76 is engaged in a plurality of through holes 56, 58 of the frame 42. Said first end 76 extends in particular through a primary port 56 and through the two secondary ports 58 d 'a pair of secondary orifices 58 adjacent to said primary orifice 56, forming at least one loop around the frame portion 60 separating these secondary orifices 58. This arrangement ensures good hold of the first end 76 on the frame 42.
    The secondary orifices 58 in which the first end 76 of an elongated heating element 74 is engaged are specific to said first end 76, that is to say that no other elongated heating element 74 is engaged in these secondary orifices 58.
    The primary orifice 56 in which the first end 76 of an elongated heating element 74 is engaged is, however, shared with another elongated heating element 74 whose first end 76 is also engaged in said primary orifice 56. Said first ends 76 are nevertheless spaced from each other, these first ends 76 being in contact with opposite walls of the primary orifice 56.
    The first end 76 of each elongated heating element 74 is moreover brazed or welded to the frame 42, in particular at the level of the primary orifice 56 traversed by said first end 76. This makes it possible to strengthen the holding of this first end 76 on the frame 42 and ensuring good electrical contact between the first end 76 and the frame 42.
    Referring to Figure 4, the second end 78 of each elongated heating element 74 is curved in the shape of a hook and engaged in one of the holes 72. In particular, for each hole 72, the second ends 78 of two elongated heating elements 74 are engaged in said bore 72. Again, this arrangement ensures good resistance of the elongated heating elements 74 on the central support 64.
    Each elongated heating element 74 is also linked, between its first and second ends 76, 78, to at least one other of the elongated heating elements 74.
    To do this, the elongated heating elements 74 are arranged, as visible in FIG. 2, according to a pattern which is repeated circumferentially around the geometric center G, that is to say that, if we consider the axis perpendicular to the plane of the heating member 30 and passing through the geometric center G then, the pattern drawn by the elongated heating elements 74 repeats with a determined period around the axis. In other words, the pattern drawn by the elongated heating elements 74 in an angular sector around the geometric center G is repeated by rotation around said axis at an angle identical to that of the angular sector. In the example shown, the angular sector thus repeated is an angular sector of 40 °, the pattern of which is therefore reproduced nine times around the geometric center G.
    The elongated heating elements 74 are in contact with each other by respective contact points 80, two contact points 80 of two separate elongated heating elements 74 in contact with each other being at the same electrical potential.
    Preferably, all the contact points 80 are arranged on a plurality of isopotential lines L with closed contour. Some of these lines are shown in Figure 2. The lines of isopotential L are substantially centered on the geometric center G.
    For example, the lines of isopotential L are circles centered on the geometric center G.
    All the contact points 80 at the same electrical potential are placed on the same line of isopotential L. It is possible that certain lines of isopotential L are confused.
    Here, the isopotential lines L all have an increasing mean diameter when the electric potential decreases.
    To allow such an arrangement, two contact points 80 of two separate elongated heating elements 74, in contact with one another, are located along said elongated heating elements 74 at the same distance from the respective first ends 76 of said two elements elongated heaters 74.
    These contact points 80 are also typically located at the same distance from the respective second ends 78 of the two elongated heating elements 74.
    Therefore, it is particularly advantageous that all the elongated heating elements 74 have the same length taken between their first and second ends 76, 78 respectively.
    In the example shown, each elongated heating element 74 occupies a respective angular sector around the geometric center G. The angular sectors occupied by the elongated heating elements 74 adjoin each other.
    The angular sector occupied by an elongated heating element 74 is formed by half of an angular sector of the repeated pattern.
    Each elongated heating element 74 is in particular arranged in a zigzag shape and alternately forms first and second segments 82, 84 connected by elbows 86.
    The first segments 82 extend radially towards the geometric center G and circumferentially around said geometric center G in a first direction. This first direction is clockwise in the representation of FIG. 2.
    The second segments 84 extend radially towards the geometric center G and circumferentially around said geometric center G in a second direction opposite to the first. In the representation of FIG. 2, the second direction is counterclockwise.
    Two elongated heating elements 74 occupying neighboring angular sectors are linked to each other by their respective elbows 86. The elbows 86 therefore define the contact points 80 between the elongated heating elements 74.
    Each elongated heating element 74 is linked only to the fixing ring 40, to the central support 64, and to its neighboring elongated heating elements 74. By this is meant that each elongated heating element 74 is linked only to the elements constituting the heating member 30, and to none of the other elements of the purification device 9.
    Each elongated heating element 74 is constituted by a resistive element.
    Preferably, each elongated heating element 74 is devoid of an electrically insulating coating.
    Each elongated heating element 74 is adapted to be heated to a temperature between 150 and 1300 ° C, preferably between 200 and 1000 ° C, under the effect of the potential difference applied between its first and second ends 76, 78 and of the power supplied by the power supply 32, so as to transmit the thermal power to the exhaust gases by convection and / or to emit in the infrared range. Each elongated heating element 74 is also adapted to resist oxidation in the presence of exhaust gases. For this purpose, each elongated heating element 74 is typically made of a material chosen from FeCrAI and its alloys, NiCr and its alloys, stainless steel, Inconel® or silicon carbide. For example, each elongated heating element 74 is made of Kanthal® A1, Nichrome® 80 or Nikrothal® 80.
    Each elongated heating element 74 also has a cross section preferably less than 20 mm 2 , more preferably between 0.002 mm 2 and 10 mm 2 , even more preferably between 0.075 mm 2 and 5 mm 2 , and even more preferably between 0.03 mm 2 and 0.2 mm 2 . For elongated heating elements 74 of circular section, this corresponds to a diameter preferably less than 5 mm, more preferably between 0.05 mm and 3.5 mm, even more preferably between 0.1 mm and 2.5 mm , and even more preferably between 0.2 mm and 0.5 mm.
    In the example shown, each elongated heating element 74 is in particular constituted by a metal wire. In this case, the elongated heating elements 74 are fixed to each other at their contact point 80 by respective interleaved portions, as shown here, and / or by ligatures and / or by solder points.
    The nominal operating temperature of the heating member 30, as well as the nominal total radiative thermal power and possibly the nominal convective total thermal power of the heating member 30, determine the total external surface required for the elongated heating elements 74. This surface in turn determines the cross section of each elongated heating element 74, and the total length of the elongated heating elements 74.
    The cross section of each elongated heating element 74 is determined in particular by taking into account the characteristics of the electrical supply 32. In fact, the electrical resistance of each elongated heating element 74 increases with the length of this heating element and decreases with its section . Each elongated heating element 74 thus has, between its first and second ends 76, 78, a length conditioned by the potential difference applied between said first and second ends 76, 78.
    For a nominal electrical power of 2 kW at 12 volts, the total length of the elongated heating elements 74 is approximately 4 meters for elements of 0.2 mm 2 in cross section. This total length is here obtained by using eighteen elongated heating elements 74, 22 cm in length each.
    Returning to FIG. 1, the electrical supply 32 comprises a source 90 of electrical energy, constituted for example by the electric battery of the vehicle, or by a supercapacitor device.
    The electrical energy source 90 is typically adapted to supply direct or chopped current, under a voltage depending on the vehicle (12, 48 or 400 volts for example).
    The electrical supply 32 also includes a controller 93 arranged to control the supply of the heating member 30 with electrical energy.
    The controller 93 includes, for example, an information processing unit formed by a processor and a memory associated with the processor. As a variant, the controller 93 is produced in the form of programmable logic components, such as FPGA (Field-Programmable Gate Array), or in the form of dedicated integrated circuits, such as ASIC (Application-Specific Integrated Circuit).
    The controller 93 is configured in particular to choose the voltage and the electric current supplied by the electric supply 32 to the heating member 30, so as to maintain the heating power and / or the electric power consumed within a determined range.
    Typically, the controller 93 controls the heating by pulse width modulation (PWM).
    The power supply 32 further comprises a member 94 for acquiring the intensity of the electric current supplying the linear heating elements 74 and the electric voltage across the terminals of the linear heating elements 74.
    This member 94 is of any suitable type.
    For example, the acquisition device 94 comprises a sensor 95 for measuring electric current and a sensor 97 for measuring electric voltage. As a variant, the intensity of the electric current and the electric voltage are obtained by calculation, from information recovered in the controller 93.
    The controller 93 is advantageously configured to control the temperature of the elongated heating elements 74, monitor the good working condition of the elongated heating elements 74, determine the temperature of the exhaust gases when the heating element 30 is no longer used to heat the purification member 10, and determining the flow rate of exhaust gas through the purification member 10, once the heating member 30 is no longer used to heat the purification member 10. At this Indeed, the controller 93 is typically configured to implement the control programs described in application FR 17 53059.
    Thanks to the invention described above, it is thus possible to easily handle the heating member 30, in particular to transport it without risk of deterioration and to mount it easily on an existing exhaust gas purification device, without impact on the size of the exhaust line.
    In addition, the heating element 30 allows optimal and rapid heating of the purification device 9 according to the invention.
    It will be noted that, although in the description given above, the heating member 30 is described positioned upstream of the purification member 10, the invention is not limited to this single embodiment. Thus, in variants not shown of the invention, the heating member 30 is positioned downstream of the purification member 10, or between the purification member 10 and another purification member (not shown) of the device purification 9.
    权利要求:
    Claims (10)
    [1" id="c-fr-0001]
    1. - Heating element (30) for a device (9) for purifying the exhaust gases of a vehicle, adapted to be placed opposite and at a distance from an upstream (12) or downstream (14) face d a member (10) for purifying the exhaust gases of a vehicle, said heating member (30) comprising a fixing ring (40) comprising an electrically conductive frame (42) having a geometric center (G), the heater (30) further comprising a central support (64) disposed substantially at the geometric center (G) of the frame (42), and a plurality of elongated heating elements (74) forming at least one gas permeable layer d exhaust, each elongated heating element (74) having first and second ends (76, 78) opposite one another, the first end (76) being linked to the frame (42) and the second end (78) being linked to the central support (64), characterized in that the fixing ring (40) further comprises a plurality of electrically conductive radial projections (44) distributed around the frame (42), each radial projection (44) projecting from the frame (42) in a direction opposite to the geometric center (G) of the frame (42).
    [2" id="c-fr-0002]
    2, - Heating element (30) according to claim 1, wherein the frame (42) has an inner face (50) oriented towards the geometric center (G), an outer face (44) oriented opposite the center geometric (G), and a plurality of through orifices (56, 58) each opening into said internal and external faces (50, 52), each elongated heating element (74) being engaged in at least one of said through orifices (56, 58).
    [3" id="c-fr-0003]
    3. - heating element (30) according to claim 2, in which the frame (42) comprises a section (54) joining the internal face (50) to the external face (52) and, for each through orifice (56, 58), a slot (62) is formed in said edge (54), the slot (62) extending from the internal face (50) to the external face (52) and opening into the through orifice (56 , 58).
    [4" id="c-fr-0004]
    4, - A heater (30) according to claim 2 or 3, wherein the through holes (56, 58) comprise, for each elongated heating element (74), a primary orifice (56) and two secondary orifices (58) , the secondary orifices (58) being close to each other and distant from the primary orifice (56), the secondary orifices (58) being separated from each other by a frame portion (60) , the first end (76) of the elongated heating element (74) extending through the primary orifice (56) and forming a loop around the frame portion (60).
    [5" id="c-fr-0005]
    5. - Heating device (30) according to any one of the preceding claims, in which the central support (64) consists of a washer (66) made of a conductive material, preferably metal, for example copper, steel. stainless, nickel chrome alloy or iron chrome aluminum alloy.
    [6" id="c-fr-0006]
    6. - heater (30) according to claim 5, wherein the washer (66) comprises a first large face (68) and a second large face (70) opposite to each other, and a plurality of holes (72) opening into each of said large faces (68, 70), the second end (78) of each elongated heating element (74) being bent in the form of a hook and engaged in one of said holes (72).
    [7" id="c-fr-0007]
    7. - A heater (30) according to claim 6, wherein, for each bore (72), the second ends (78) of two elongated heating elements (74) are engaged in said bore (72).
    [8" id="c-fr-0008]
    8. - Supply member (20) for a device (9) for purifying the exhaust gases of a vehicle, the supply member (20) comprising:
    an envelope (28) made of an electrically conductive material, said envelope (28) having an upstream face (34) through which the exhaust gases penetrate into the supply member (20) and a downstream face (36) through which the exhaust gases exit from the supply member (20), and a heating member (30) according to any one of the preceding claims, housed in the envelope (28), facing the downstream face ( 36), the heating member (30) being mounted in said casing (28) so that each radial projection (44) is in contact with the casing (28).
    [9" id="c-fr-0009]
    9. - supply member (20) according to claim 8, comprising a power supply (32) and an electrode (65) electrically connecting the central support (64) to a first terminal (33B) of said power supply (32) , said electrode (65) extending through the envelope (28) being electrically isolated from said envelope (28), the envelope (28) being electrically connected to a second terminal (33A) of the electrical supply ( 32) or to ground.
    [10" id="c-fr-0010]
    10. - Device (9) for purifying the exhaust gases of a vehicle comprising at least one member (10) for purifying the exhaust gases having an upstream face (12) through which the exhaust gases enter the the purification member (10) and a downstream face (14) by which the exhaust gases exit from the purification member (10), the purification device (9) further comprising at least one supply member ( 20) according to claim 8 or 9 arranged so as to make the downstream face (36) of the casing (28) of said feed member (20) substantially coincide with the upstream face (12) of the purification member ( 10).
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    同族专利:
    公开号 | 公开日
    JP6734413B2|2020-08-05|
    JP2019157852A|2019-09-19|
    CN110107382A|2019-08-09|
    US20190234266A1|2019-08-01|
    CN110107382B|2021-01-26|
    US10731530B2|2020-08-04|
    KR20190093511A|2019-08-09|
    KR102143565B1|2020-08-12|
    FR3077330B1|2020-03-13|
    DE102019101603A1|2019-08-01|
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    JPH08218846A|1995-02-17|1996-08-27|Nippon Soken Inc|Electric heater for exhaust gas purifying device for internal combustion engine|
    JP3239755B2|1996-05-28|2001-12-17|トヨタ自動車株式会社|Catalyst device using honeycomb body|
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    FR3065027B1|2017-04-07|2019-11-29|Faurecia Systemes D'echappement|VEHICLE EXHAUST GAS PURIFYING DEVICE AND CORRESPONDING DRIVING METHOD|SE504048C2|1995-04-11|1996-10-28|Torbjoern Norman|Method and apparatus for carrying out ground anchoring|
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    法律状态:
    2019-02-25| PLFP| Fee payment|Year of fee payment: 2 |
    2019-08-02| PLSC| Publication of the preliminary search report|Effective date: 20190802 |
    2020-02-25| PLFP| Fee payment|Year of fee payment: 3 |
    2021-02-23| PLFP| Fee payment|Year of fee payment: 4 |
    2022-01-20| PLFP| Fee payment|Year of fee payment: 5 |
    优先权:
    申请号 | 申请日 | 专利标题
    FR1850861|2018-02-01|
    FR1850861A|FR3077330B1|2018-02-01|2018-02-01|EASY-HANDLING HEATER FOR VEHICLE EXHAUST GAS PURIFICATION DEVICE|FR1850861A| FR3077330B1|2018-02-01|2018-02-01|EASY-HANDLING HEATER FOR VEHICLE EXHAUST GAS PURIFICATION DEVICE|
    US16/252,860| US10731530B2|2018-02-01|2019-01-21|Heater with facilitated handling for the exhaust gas purification device of a vehicle|
    DE102019101603.7A| DE102019101603A1|2018-02-01|2019-01-23|Heating element with simplified handling for a vehicle exhaust gas purification device|
    JP2019010137A| JP6734413B2|2018-02-01|2019-01-24|A heater that is easy to operate in vehicle exhaust gas purification devices|
    KR1020190010473A| KR102143565B1|2018-02-01|2019-01-28|Heater with facilitated handling for the exhaust gas purification device of a vehicle|
    CN201910094314.5A| CN110107382B|2018-02-01|2019-01-31|Heater for an exhaust gas purification device of a vehicle, which is easy to handle|
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