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EP2395296B1 - Echangeur de chaleur - Google Patents

Echangeur de chaleur Download PDF

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Publication number
EP2395296B1
EP2395296B1 EP10290319.2A EP10290319A EP2395296B1 EP 2395296 B1 EP2395296 B1 EP 2395296B1 EP 10290319 A EP10290319 A EP 10290319A EP 2395296 B1 EP2395296 B1 EP 2395296B1
Authority
EP
European Patent Office
Prior art keywords
tube
heat exchanger
heat
resistance heating
electrical resistance
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP10290319.2A
Other languages
German (de)
English (en)
Other versions
EP2395296A1 (fr
Inventor
Michael Dipl.-Ing. Kohl
Karl-Gerd Dipl.-Ing. Krumbach
Thierry Clauss
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mahle Behr GmbH and Co KG
Mahle Behr France Rouffach SAS
Original Assignee
Mahle Behr GmbH and Co KG
Mahle Behr France Rouffach SAS
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 Mahle Behr GmbH and Co KG, Mahle Behr France Rouffach SAS filed Critical Mahle Behr GmbH and Co KG
Priority to EP10290319.2A priority Critical patent/EP2395296B1/fr
Publication of EP2395296A1 publication Critical patent/EP2395296A1/fr
Application granted granted Critical
Publication of EP2395296B1 publication Critical patent/EP2395296B1/fr
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • F24H3/06—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators
    • F24H3/062—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators using electric energy supply; the heating medium being the resistive element
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H3/00—Air heaters
    • F24H3/02—Air heaters with forced circulation
    • F24H3/04—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element
    • F24H3/0405—Air heaters with forced circulation the air being in direct contact with the heating medium, e.g. electric heating element using electric energy supply, e.g. the heating medium being a resistive element; Heating by direct contact, i.e. with resistive elements, electrodes and fins being bonded together without additional element in-between
    • F24H3/0429—For vehicles
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24H—FLUID HEATERS, e.g. WATER OR AIR HEATERS, HAVING HEAT-GENERATING MEANS, e.g. HEAT PUMPS, IN GENERAL
    • F24H9/00—Details
    • F24H9/18—Arrangement or mounting of grates or heating means
    • F24H9/1854—Arrangement or mounting of grates or heating means for air heaters
    • F24H9/1863—Arrangement or mounting of electric heating means
    • F24H9/1872—PTC resistor

Definitions

  • the invention relates to a heat exchanger according to the preamble of claim 1.
  • the invention also relates to an automotive air conditioning system with such a heat exchanger.
  • Automotive air conditioning systems serve to heat and / or to cool the air to be supplied to the interior of a motor vehicle.
  • heat exchangers are used as electrical heaters to heat the air supplied to the interior.
  • the electric heater includes PTC elements.
  • Positive Temperature Coefficient (PTC) elements are current-carrying materials that have electrical resistance and can conduct electricity better at lower temperatures than at higher temperatures. Their electrical resistance thus increases with increasing temperature.
  • the PTC element is generally made of ceramic and is a PTC thermistor. This raises regardless of the boundary conditions - such. For example, applied voltage, nominal resistance, or air quantity at the PTC element has a very uniform surface temperature at the PTC element. Overheating can be prevented as it z. B. could occur with a normal heat-emitting heating wire, since regardless of the boundary conditions always about the same resistance and thus a substantially identical electrical heating power is applied.
  • the heat exchanger comprises PTC elements, at least two electrical conductors through which electrical current is passed through the PTC element and heat conducting elements, in particular fins or corrugated fins, by means of which the surface is increased to heat the air.
  • PTC elements at least two electrical conductors through which electrical current is passed through the PTC element and heat conducting elements, in particular fins or corrugated fins, by means of which the surface is increased to heat the air.
  • Automotive air conditioning systems for these motor vehicles generally no longer have a heat exchanger for heating the air through which cooling fluid flows. The entire heating power of the automotive chimney system must therefore be applied by the electric heater or the PTC elements.
  • the PTC elements with high voltage, z. B. in the range of 50 to 600 volts instead of low voltage with 12 volts to operate.
  • High voltage in an automotive air conditioning system is a security problem because, for example, by a human touch of high voltage parts of the person from the high voltage health damage can be added.
  • the US 4,327,282 shows a heat exchanger with a PTC heating element.
  • Current is passed through the PTC heating element by means of contact plates and an insulating layer is arranged on the contact plates.
  • the components are held together by means of a U-shaped clip.
  • a heat generating element of a heater for air heating comprising at least one PTC element and voltage applied to opposite side surfaces of the PTC element electrical conductor tracks, wherein the two electrical conductors are surrounded on the outside by a non-electrically conductive insulating layer.
  • the WO 03/088712 A2 discloses a heat exchanger with PTC elements arranged in a tube.
  • the EP 2 211 589 A1 discloses a heat exchanger with electrically heatable PTC elements.
  • the EP 2 151 639 A1 discloses a heat exchanger according to the preamble of claim 1.
  • the object of the present invention is therefore to provide a heat exchanger and a motor vehicle air conditioning system in which or in which a with electric current under high voltage, for example more than 50 V, operated heat exchanger without endangering the environment, in particular People, can be operated.
  • the heat exchanger and the air conditioning should be inexpensive to manufacture and work reliably in operation.
  • An exemplary embodiment of the heat exchanger comprises at least one electrical resistance heating element, in particular at least one PTC element, at least two conductors electrically connected to the at least one electrical resistance heating element, in particular printed circuit boards, in order to conduct electrical current through the at least one electrical resistance heating element and thereby the electrical resistance heating element at least one heat conducting element for transmitting heat from the at least one electrical resistance heating element to a fluid to be heated, at least one electrical insulating element electrically isolating the at least two conductors, preferably from the at least one heat conducting element, wherein the at least two conductors and / or the at least one electrical resistance heating element is arranged in at least one cavity bounded by at least one cavity wall and the at least one electrical insulating belt t at least one molded seal is, wherein the at least one cavity wall is formed as at least one closed flat tube without joint in cross-section and the at least one molded seal in the cavity as a tube, in particular shrink tubing is formed.
  • the tube is thus easy to manufacture and can only be produced by means of extrusion molding and already has a closed cross-section after production in cross-section. As a result, it is no longer necessary, the walls of the at least one tube to a closed tube with each other subsequently at a joint, z. B- a welding, soldering or splice to connect.
  • the at least one flat tube is formed with two broad side walls and two narrow side walls, and the two narrow side walls are braced by means of a compressive force acting on the two wide side walls, in particular the two narrow side walls are braced at a bending edge or a bending circle.
  • On the two broad side walls of the at least one tube thus acts a compressive force, so that thereby the two broad side walls are pressed onto a heating composite in a cavity enclosed by the at least one tube cavity, thus the heating system is non-positively, in particular by means of clamping or jamming, with the at least one Tube, in particular the Breit confusewandonne connected.
  • the at least one heat-conducting element comprises the at least one tube and / or the at least one heat-conducting element comprises corrugated ribs which are arranged on the outside of the at least one tube, in particular by means of soldering or gluing.
  • the at least one heat-conducting element in particular the at least one tube and / or the corrugated ribs, at least partially, in particular completely, of metal, for example aluminum or steel, or plastic
  • the at least one molded gasket is disposed between each of a wall of the at least one tube and a conductor, so that the at least two conductors are electrically insulated with respect to the at least one tube.
  • the tube in particular as a shrink tube, which forms the molded seal encloses in the invention, the heating unit with the two circuit boards and the PTC elements. As a result, the heating unit is electrically insulated.
  • the at least one molded seal is elastic and / or the at least one molded seal consists at least partially of silicone or plastic or rubber and / or the at least one molded seal is positively and / or positively and / or materially connected to the at least one tube and / or the at least one molded seal is a foil.
  • a compressive force is applied and the elastic molded seal can deform due to this compressive force.
  • the at least one molded seal comprises heat-transmitting or thermally conductive particles, for.
  • alumina and / or silicon carbide and / or boron nitride and / or the at least one tube is from a first, z. B. upper, cover plate at a first end, in particular fluid-tight, closed and / or the at least one tube is of a second, z. B. lower, cover plate is closed at a second end, in particular fluid-tight.
  • Heat-transferring or heat-conducting particles in the at least one molded seal ensure that the heat generated by the PTC elements can also be conducted outwards to the heat-conducting elements, in particular the at least one tube and / or the corrugated fins, in a sufficiently good thermal conductivity.
  • the at least one electrical resistance heating element, the at least two conductors and the at least one molded seal are connected to at least one heating composite, which is or are arranged within the at least one tube, and preferably a plurality of tubes each having a heating composite and arranged between the tubes corrugated fins form the heat exchanger, wherein in particular by means of a clamping frame or a spring on the walls of the at least one tube, in particular the broad side walls of the at least one flat tube, the compressive force is applied.
  • An automotive air conditioning system according to the invention comprises at least one heat exchanger described in this patent application.
  • the at least one molded seal consists of an electrically insulating and thermally conductive material. Due to the geometric arrangement of the at least one molded seal within the heat exchanger, the at least two conductors and the at least one electrical resistance heating element are electrically insulated.
  • the molded gasket is in a solid state of aggregation, i. H. not liquid or gaseous, even at high temperatures, eg. 70 ° C or 100 ° C.
  • the at least one molded seal is a film or insulating film, for.
  • a film or insulating film for.
  • a polyimide film (Kapton film), (elastic) ceramic-filled film or a (elastic) ceramic-filled silicone film for.
  • the heat exchanger has an IP protection class of 67, so that a sufficient waterproofness and dust tightness is present.
  • a closed pipe is a pipe whose walls are completely closed in a cross section.
  • the corrugated fins and the at least one tube are connected to each other by means of gluing and / or soldering and / or non-positively under prestress.
  • the first and / or second sealing plate has a groove, in which one end of the at least one tube is arranged.
  • the at least one tube in the groove with a seal, z. B. a, preferably elastic, seal, or an adhesive, sealed.
  • the at least one heat-conducting element and / or the at least one molded seal has a thermal conductivity of at least 1 W / mK, in particular at least 15 W / mK.
  • the at least one molded seal has an electrical insulation of at least 1 kV / mm, in particular at least 25 kV / mm.
  • the at least one molded seal preferably in cross section, has a dielectric strength of at least 1 kV.
  • the at least one molded seal has a thermal conductivity of at least 1 W / mK, in particular at least 15 W / mK.
  • the at least one molded seal can thus insulate well electrically and, on the other hand, can sufficiently conduct the heat from the electrical resistance heating element to the heat-conducting element or the heat-conducting elements.
  • Fig. 1 shows an automotive air conditioning 24.
  • an air conditioning case 26 having a bottom wall 27 and an outlet portion 29, a fan 25, an air filter 30, a refrigerant evaporator 31 and a heat exchanger 1 is arranged as an electric heater.
  • the air conditioning housing 26 thus forms a channel 35 for passing the air.
  • Housing walls 28 of the air conditioning housing 26 have on the inside a surface 36 which define the channel 35.
  • the air for the interior of a motor vehicle is passed by means of the blower 25 through the air filter 30, the refrigerant evaporator 31 and the heat exchanger 1.
  • the automotive air conditioning system 24 is thus not provided with a heat exchanger through which coolant flows for heating the air conducted through the motor vehicle installation 24.
  • the air conducted by the motor vehicle air conditioning system 24 is electrically heated exclusively by means of the heat exchanger 1.
  • the motor vehicle air conditioning system 24 is preferably used in a motor vehicle with exclusively electric drive or with a hybrid drive (not shown).
  • the heat exchanger with high voltage eg. B. with more than 50 volts, for example, 60 V or 600 V, operated to not too large Amperages and thus too thick power lines (not shown) to get.
  • An aluminum tube 18 designed as a flat tube 13 has two broad side walls 20 and two narrow side walls 21 (FIG. Fig. 8 . 12, 13, 14 and 15 ) on.
  • the width and narrow side walls 20, 21 thereby represent cavity walls 17, which enclose a cavity 19 within the tube 18.
  • the width and Schmalodorwandept 20, 21 of the tube 18 are thus walls 16 of the tube 18.
  • the walls 18 in cross-section no joint, z.
  • a welding or soldering on.
  • the tube 18 is made in one piece as a closed wall 18 with extrusions, so that no joints are required in cross section on the tube 18.
  • two molded seals 23 are arranged as electrical insulating elements 22.
  • the two form seals 23 are made of elastic silicone.
  • On the two rectangular shaped seals 23 ( Fig. 7, 8 . 13 and 14 ) are two conductors 4, namely a first circuit board 6 and a second circuit board 7, on.
  • Between the two circuit boards 6, 7 three PTC elements 3 designed as electrical resistance heating elements 2 are arranged.
  • the PTC elements 3 are connected to each other with the two printed circuit boards 6, 7 with adhesive.
  • an electrical contact plate 5 is formed in each case ( Fig. 3 and 9 ).
  • the cavity 19 enclosed by the cavity walls 17 of the flat tube 13 is a void 32 in the region of the narrow side walls 21, ie in the void 32 only air ( Fig. 8 ).
  • the two circuit boards 6, 7 with the interposed three PTC elements 3 due to the electrical insulation of the molded gaskets 23 electrically isolated.
  • the electrical contacting of the two circuit boards 6, 7 takes place by means of not shown electrical lines to the contact plates 5.
  • the two circuit boards 6, 7 with the three PTC elements 3 thereby constitute a heating unit 10.
  • a heating coil 9 or the heat exchanger 1 is present.
  • Several heater 9 as shown in FIG Fig. 2 . 10 and 11 can also be connected to a heat exchanger 1 with a larger number of heating registers 9 to each other.
  • the net height H N of the heat exchanger 1 as shown in FIG Fig. 3 is about 50 to 300 mm, preferably 100 to 200 mm and the mesh width B N is about 50 to 300 mm, preferably 100 to 200 mm.
  • the transverse division Q ie the distance between the flat tubes 13 as shown in FIG Fig. 4 , is in this case between 5 and 30 mm, preferably 9 to 18 mm and the overall depth T N as shown in FIG Fig. 8 is 6 to 50 mm, preferably 10 to 40 mm.
  • the overall depth T R is 10 to 50 mm, preferably 10 to 40 mm.
  • the thickness D E of the printed circuit boards 6, 7 is 0.2 to 1.5 mm, the thickness D I of the molded seals 23 0.1 to 1.5 mm and the width B R of the tube 18 is 2 to 10 mm.
  • the thickness D stone of the PTC elements 3 is in the range between 0.8 to 3 mm.
  • corrugated fins 12 are arranged as banksleiticide 11 ( Fig. 2 . 3 . 5 . 10 and 11 ).
  • the corrugated fins 12 serve to enlarge the surface of the heat exchanger 1, in order to better release the heat emitted by the PTC elements 3 to the air, which flows through the heat exchanger 1.
  • the heating coil 8, consisting of the two printed circuit boards 6, 7, the PTC elements 3 and the molded seal 23 is thereby only after the manufacture of the flat tube 13 in the Flat tube 13 inserted.
  • the relevant manufacturing steps are in the Fig. 12 to 14 shown.
  • the corrugated fins 12 can be connected to the corrugated fins 12 either before or after the heating composite 8 is introduced into the flat tube 13.
  • the corrugated fins 12 can be connected to the flat tubes 13, for example, by gluing, welding or soldering. In addition, it is also possible to frictionally connect the world fins 12 with the flat tubes 13, because a pressure force 33 is applied to a heat exchanger 1 with a plurality of flat tubes 13 or heating coil 9 and due to this pressure force 33 (FIG. 10 and 11 ), the corrugated fins 12 between the flat tubes 13 can be held non-positively.
  • Fig. 12 is a flat tube 13 with attached corrugated fins 12 shown in a cross section.
  • a liner 38 or inlay 38 Within the cavity 12 enclosed by the flat tube 13 there is a liner 38 or inlay 38.
  • the insert 38 is arranged in the cavity 19. The insert 38 is not required if the flat tube 13 has a sufficiently high rigidity in order to be able to counteract these forces during the assembly of the corrugated fins 12 with the flat tube 13, without any deformation occurring on the flat tube 13.
  • the corrugated fins 12 to the flat tube 13
  • the insert 38 is removed from the flat tube 13 and then the heating composite 8 with the PTC elements 3 the two circuit boards 6, 7 and two molded seals 23 inserted into the flat tube 13 ( Fig. 13 ).
  • the two form seals 23 have a substantially rectangular cross-sectional shape. These are thus two separate molded seals 23.
  • the molded seal 23 is in the form of a hose 34 (FIG. Fig. 9 ),
  • the hose 34 can In this case, be attached to the heating unit 10 with the two circuit boards 6, 7 and the PTC elements 3 as a shrink tube by shrinking under heating.
  • the distance between the two broad side walls 20 of the flat tube 13 is greater than the thickness of the heating composite 8, ie the distance between the two form seals 23. There is thus a distance between the two form seals 23 and the two wide side walls 20 before.
  • the heating composite 8 the flat tube 13 can be easily inserted.
  • a compressive force 33 is applied to the two wide side walls 20 or to the corrugated fins 12 ( Fig. 14 ), so that the narrow side walls 21 deform or bend substantially at a bending edge 39 and thereby the distance between the two broad side walls 20 is reduced, so that the two wide side walls 20 are pressed onto the two form seals 23 of the heating system 8.
  • the 14 illustrated state of the heating register 9 are thus the two narrow side walls 21 braced and the heating system 8 kraftschitzig, in particular by means of clamping, clamped between the two broad side walls 20.
  • the pressure force 33 is, for example, by means of a not in Fig. 10 shown tension spring applied to the heat exchanger 1 with a plurality of heating registers 9 or by means of an in Fig. 11 shown tenter 37.
  • the flat tube 13 can next to the in the Fig. 12 to 14 illustrated example with the narrow side wall 21 with a bending edge 9 as a flat tube 13 with narrow side walls 21 in the geometric shape of a bending circle as shown in FIG Fig. 14 be educated.
  • the manufacturing steps for connecting the heating composite 8 with the flat tube 13 according to Fig. 15 correspond in an analogous manner to the example of the flat tube 13 according to the first example, which in the Fig. 12 to 14 is shown.
  • an upper first cover plate 14 is applied to the upper ends of the flat tubes 13 and applied to the lower second ends of the flat tubes 13, a second lower cover plate 15 ( Fig. 5, 6 and 16 ).
  • the first and second cover plate 14, 15 in this case has a plurality of substantially rectangular grooves into which the ends of the flat tubes 13 are inserted.
  • a cutout 40 ( Fig. 16 ) available.
  • an adhesive is introduced as a seal 41.
  • the ends of the flat tubes 13 are glued to this adhesive and thereby a liquid and dust-tight connection and sealing between the flat tubes 13 and the first and second cover plate 14, 15 produced.
  • a seal 41 for example, silicone can be used in addition to adhesive.
  • the first and second cover plate 14, 15 consists of metal or plastic.
  • An upper side of the first upper cover plate 14 is connected dust-tight and liquid-tight with the air conditioning housing 26, so that no dust and no liquid can penetrate into the cavity 19 at the upper ends of the flat tubes 13. Notwithstanding this may be on the top of the first upper cover plate 14 also dust and liquid-tight an electronic housing attached (not shown).
  • the arranged within the channel 35 of the motor vehicle air conditioner 24 heat exchanger 1 is thus sealed dust and liquid-tight. dust or liquid within the channel 35 can thus not penetrate into the cavity 19 within the flat tubes 13.
  • the heating assembly 8 is arranged dust and liquid-tight within the flat tubes 13, so that in the air duct 35 existing dust particles or liquid can cause no damage to the heat exchanger 1.
  • the molded seal 23 is a commercially available insulating film and can thus be made available inexpensively in the production.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Air-Conditioning For Vehicles (AREA)

Claims (9)

  1. Echangeur de chaleur (1) comprenant
    - au moins un élément chauffant à résistance électrique (2), en particulier au moins un élément - CTP - à coefficient de température positif (3),
    - au moins deux conducteurs plats (4) connectés de façon électroconductrice à l'élément chauffant à résistance électrique (2) au moins au nombre de un, en particulier des cartes à circuits imprimés (6, 7), où les conducteurs sont disposés des deux côtés des éléments chauffants à résistance électrique, pour faire passer du courant électrique à travers l'élément chauffant à résistance électrique (2) au moins au nombre de un et, ainsi, pour réchauffer l'élément chauffant à résistance électrique (2),
    - au moins un élément conducteur de la chaleur (11) servant à la transmission de la chaleur depuis l'élément chauffant à résistance électrique (2) au moins au nombre de un, jusqu'à un fluide à réchauffer,
    - au moins un élément isolant électrique (22) qui isole électriquement les conducteurs (4) au moins au nombre de deux, les isolant de préférence de l'élément conducteur de la chaleur (11) au moins au nombre de un,
    - où les conducteurs (4) au moins au nombre de deux et l'élément chauffant à résistance électrique (2) au moins au nombre de un sont disposés dans au moins un espace creux (19) délimité par au moins une paroi d'espace creux (17), et l'élément isolant électrique (22) au moins au nombre de un est au moins un joint profilé (23), où la paroi d'espace creux (17) au moins au nombre de un est configurée comme au moins un tube plat fermé (18),
    caractérisé en ce que le tube plat fermé (18) est configuré, en coupe transversale, sans point d'assemblage, et le joint profilé (23) au moins au nombre de un est configuré dans l'espace creux (19) comme un tube flexible (34), en particulier un tube flexible thermorétractable (34).
  2. Echangeur de chaleur selon la revendication 1, caractérisé en ce que le tube plat (13) au moins au nombre de un est configuré en comportant deux parois à grands côtés (20) et deux parois à petits côtés (21), et les deux parois à petits côtés (21) sont serrées au moyen d'une force de pression s'exerçant sur les deux parois à grands côtés (20), en particulier les deux parois à petits côtés (21) sont serrées sur une arête de cintrage (39) ou sur un cercle de cintrage.
  3. Echangeur de chaleur selon la revendication 1 ou 2, caractérisé en ce que l'élément conducteur de la chaleur (11) au moins au nombre de un comprend le tube (18) au moins au nombre de un et /ou l'élément conducteur de la chaleur (11) au moins au nombre de un comprend des ailettes ondulées (12) qui sont disposées, en particulier par brasage ou collage, extérieurement sur le tube (18) au moins au nombre de un.
  4. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que l'élément conducteur de la chaleur (11) au moins au nombre de un, en particulier le tube (18) au moins au nombre de un et /ou les ailettes ondulées (12) sont au moins en partie, en particulier en totalité, en métal, par exemple en aluminium ou en acier, ou bien en matière plastique.
  5. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le joint profilé (23) au moins au nombre de un est disposé à chaque fois entre une paroi (16, 17) du tube (18) au moins au nombre de un, et un conducteur (4), de sorte que les conducteurs (4) au moins au nombre de deux sont isolés électriquement par rapport au tube (18) au moins au nombre de un.
  6. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le joint profilé (23) au moins au nombre de un est élastique et /ou le joint profilé (23) au moins au nombre de un est au moins partiellement en silicone ou en matière plastique ou en caoutchouc et /ou le joint profilé (23) au moins au nombre de un est relié au tube (18) au moins au nombre de un, par action de force et /ou par complémentarité de forme et /ou par continuité de matière et /ou le joint profilé (23) au moins au nombre de un est une feuille.
  7. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que le joint profilé (23) au moins au nombre de un comprend des particules transmettant de la chaleur ou conductrices de la chaleur, par exemple des particules d'oxyde d'aluminium et /ou de carbure de silicium et /ou de nitrure de bore et /ou le tube (18) au moins au nombre de un est fermé, en particulier de façon étanche au fluide, au niveau d'une première extrémité, par une première plaque - par exemple supérieure - formant couvercle (14) et /ou le tube (18) au moins au nombre de un est fermé, en particulier de façon étanche au fluide, au niveau d'une deuxième extrémité, par une deuxième plaque - par exemple inférieure - formant couvercle (15).
  8. Echangeur de chaleur selon l'une quelconque ou plusieurs des revendications précédentes, caractérisé en ce que l'élément chauffant à résistance électrique (2) au moins au nombre de un, les conducteurs (4) au moins au nombre de deux et le joint profilé (23) au moins au nombre de un, sont assemblés pour former au moins un ou plusieurs ensemble (s) chauffant (s) (8) qui est ou sont disposé (s) à l'intérieur du tube (18) au moins au nombre de un et, de préférence, plusieurs tubes (18) comprenant à chaque fois un ensemble chauffant (8) et des ailettes ondulées (12) disposées entre les tubes (18) forment l'échangeur de chaleur (1), où la force de pression est appliquée, en particulier au moyen d'un cadre de serrage (37) ou d'un ressort, sur les parois (16, 17) du tube (18) au moins au nombre de un, en particulier sur les parois à grands côtés (20) du tube plat (13) au moins au nombre de un.
  9. Système de climatisation d'un véhicule automobile (24), caractérisé en ce que le système de climatisation du véhicule (24) comprend au moins un échangeur de chaleur (1) selon l'une quelconque ou plusieurs des revendications précédentes.
EP10290319.2A 2010-06-11 2010-06-11 Echangeur de chaleur Active EP2395296B1 (fr)

Priority Applications (1)

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Cited By (1)

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Publication number Priority date Publication date Assignee Title
US10524310B2 (en) 2015-06-02 2019-12-31 Eberspächer Catem Gmbh & Co. Kg PTC heating element and electric heating device for an automotive vehicle comprising such a PTC heating element

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Publication number Priority date Publication date Assignee Title
DE102017208086A1 (de) * 2017-05-12 2018-11-15 Mahle International Gmbh Elektrische Heizeinrichtung
EP3401617A1 (fr) * 2017-05-12 2018-11-14 Mahle International GmbH Dispositif de chauffage électrique
DE102018217030A1 (de) * 2018-10-04 2020-04-09 Mahle International Gmbh Elektrische Heizeinrichtung
CN112728763A (zh) * 2019-05-24 2021-04-30 周哲明 一种电暖换热结构和电暖风机

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CA1100560A (fr) * 1976-03-18 1981-05-05 Walter R. Crandell Bande chauffante electrique a centre de ceramique et methode de fabrication
DE2845965C2 (de) 1978-10-21 1983-01-20 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrisches Widerstandsheizelement
DE3942266C2 (de) * 1989-12-21 1997-01-30 Tuerk & Hillinger Gmbh PTC-Heizkörper
DE10216157A1 (de) * 2002-04-12 2003-10-23 Behr Gmbh & Co Zu Heizzwecken dienender Wärmeübertrager mit elektrischer Heizeinrichtung
EP1916874B1 (fr) 2005-09-23 2010-11-24 Eberspächer catem GmbH & Co. KG Elément d'un dispositif de chauffage produisant de la chaleur
EP2151639B1 (fr) * 2008-08-07 2019-01-09 MAHLE Behr GmbH & Co. KG Caloporteur
EP2211589A1 (fr) * 2009-01-23 2010-07-28 Behr GmbH & Co. KG Caloporteur

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10524310B2 (en) 2015-06-02 2019-12-31 Eberspächer Catem Gmbh & Co. Kg PTC heating element and electric heating device for an automotive vehicle comprising such a PTC heating element

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