EP2190256A1 - Caloporteur - Google Patents

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Publication number
EP2190256A1
EP2190256A1 EP09175647A EP09175647A EP2190256A1 EP 2190256 A1 EP2190256 A1 EP 2190256A1 EP 09175647 A EP09175647 A EP 09175647A EP 09175647 A EP09175647 A EP 09175647A EP 2190256 A1 EP2190256 A1 EP 2190256A1
Authority
EP
European Patent Office
Prior art keywords
heat
conducting
conductor
electrical insulating
ptc
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.)
Granted
Application number
EP09175647A
Other languages
German (de)
English (en)
Other versions
EP2190256B1 (fr
EP2190256B2 (fr
Inventor
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 France Rouffach SAS
Original Assignee
Behr France Rouffach SAS
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Publication date
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Application filed by Behr France Rouffach SAS filed Critical Behr France Rouffach SAS
Priority to EP09175647.8A priority Critical patent/EP2190256B2/fr
Publication of EP2190256A1 publication Critical patent/EP2190256A1/fr
Publication of EP2190256B1 publication Critical patent/EP2190256B1/fr
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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/40—Heating elements having the shape of rods or tubes
    • H05B3/42—Heating elements having the shape of rods or tubes non-flexible
    • H05B3/48—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material
    • H05B3/50—Heating elements having the shape of rods or tubes non-flexible heating conductor embedded in insulating material heating conductor arranged in metal tubes, the radiating surface having heat-conducting fins
    • 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
    • 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
    • F24H3/0435—Structures comprising heat spreading elements in the form of fins
    • 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
    • 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
    • F24H3/08—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes
    • F24H3/081—Air heaters with forced circulation the air being kept separate from the heating medium, e.g. using forced circulation of air over radiators by tubes using electric energy supply
    • F24H3/082—The tubes being an electrical isolator containing the heater
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2203/00—Aspects relating to Ohmic resistive heating covered by group H05B3/00
    • H05B2203/02—Heaters using heating elements having a positive temperature coefficient

Definitions

  • the invention relates to a heat exchanger according to the preamble of claim 1, an automotive air conditioning system and a method for producing a heat exchanger according to the preamble of claim 11.
  • Automotive air conditioning systems serve to heat and / or to cool the air to be supplied to the interior of a motor vehicle.
  • electric heaters are used to heat the air supplied to the interior.
  • the electric heater comprises a heat exchanger with a PTC element.
  • Positive Temperature Coefficient (PTC) elements are current-carrying materials that have electrical resistance and 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. B. applied voltage, nominal resistance or amount of air on the PTC element - 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.
  • a heat exchanger comprises a PTC element, at least two electrical conductors by means of which electrical current is conducted through the PTC element and heat conducting elements, in particular fins, by means of which the surface for heating the air increases and thus the heat from the PTC element to the heat conducting element and the air is transferred.
  • motor vehicles are produced which have an exclusive electric drive or a hybrid drive.
  • Automotive air conditioning systems for these vehicles generally no longer have a heat exchanger for heating the air flowing through the cooling liquid. The entire heating power of the motor vehicle air conditioning system must therefore be applied by the electric heater.
  • the PTC element with high voltage, z. B. in the range of 50 to 50 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 object of the present invention is to provide a heat exchanger and a motor vehicle air conditioning system and a method for producing a heat exchanger available in which a with electric current under high voltage, for. B. more than 50 V, operated heat exchanger without endangering the environment, especially people, can be operated.
  • the heat exchanger and the motor vehicle air conditioning should be inexpensive to manufacture reliable in operation.
  • a heat exchanger comprising at least one PTC element, at least two conductors electrically connected to the at least one PTC element, in particular printed circuit boards, in order to conduct electrical current through the at least one PTC element and thereby the PTC element to heat and at least one heat conducting element for transferring heat from the at least one PTC element to a fluid to be heated and at least one means, for.
  • As adhesive or a mechanical pressure load for.
  • the at least one first electrical insulating element is arranged between at least one conductor and at least one heat conducting element and / or at least one second electrical insulating element electrically and / or covers a surface of the at least one PTC element and / or the at least one conductor and / or the at least one heat-conducting element, in particular a heat-conducting plate of the heat-conducting element, from and / or the at least one first electrical insulating element consists of a different material and / or has other properties, for.
  • the at least one second electrical insulating element is in, preferably immediate, contact with the at least one PTC element and / or the at least one conductor and / or the at least one heat-conducting element, in particular a heat-conducting plate of the heat-conducting element.
  • the at least one second electrical insulating element is a, preferably hardenable and / or hardened, fluid or a, preferably hardenable and / or hardened, gel, for. B. an adhesive, in particular silicone adhesive, or an insulating gel or fluid. The fluid or gel is electrically isolated.
  • the at least one PTC element and the at least one conductor in particular exclusively, material and / or positive and / or non-positive, z. B. by means of adhesive and / or a mechanical pressure loading means, for.
  • a spring connected to each other and / or the at least one heat conducting element and the at least one first electrical insulating element, in particular exclusively, material and / or positive and / or non-positive, z. B. by means of adhesive and / or a mechanical pressure loading means, for.
  • As a spring connected to each other and / or the at least one conductor and the at least one first electrical insulating element are, in particular exclusively, material and / or positive and / or non-positive, for. B. by means of adhesive and / or a mechanical pressure loading means, for.
  • a cohesive connection has the advantage that as a means for connecting the components of the heat exchanger, d. H. the at least one PTC element, the at least two conductors and the at least one heat conducting element, no complex holding device, for. As a clip or a frame is required. As a means for connecting thus serves the material which produces the cohesive connection.
  • the at least one second electrical insulating element isolates the at least one PTC element and / or the at least one conductor and / or the at least one heat-conducting element, in particular the heat-conducting plate of the heat-conducting element, in those areas at least partially, in particular completely, electrically and / or or covers a surface thereof in which the at least one PTC element and / or the at least one conductor and / or the at least one heat-conducting element are not in indirect, for. B. by means of an adhesive, or in direct contact or connection to the at least one PTC element and / or the at least one conductor and / or the at least one heat conducting element and / or the at least one first electrical insulating element.
  • the at least one second insulating element is at least partially enclosed or covered by a frame profile and / or the first electrical insulating element and / or the heat conducting plate.
  • the at least one first electrical insulating element comprises ceramic and / or plastic, for.
  • the at least one second electrical insulating element is introduced by means of injection into a cavity for insulating and / or the at least one second electrical insulating element is an adhesive, for. Silicone adhesive, and an excess of adhesive is in the cavity due to bonding of the at least one PTC element and / or the at least one conductor and / or the at least one first insulating element and / or the at least one heat conducting element, in particular the heat conducting plate of the heat-conducting element, pressed together by means of the adhesive.
  • An automotive air conditioning system comprises at least one heat exchanger described in this application.
  • Method according to the invention for producing a heat exchanger comprising the steps: providing at least one PTC element, providing at least two electrical conductors, in particular printed circuit boards, for passing electrical current through the at least one PTC Element, providing at least one heat-conducting element for transmitting heat from the at least one PTC element to a fluid to be heated, connecting the at least two conductors to the at least one PTC element, connecting the at least one heat-conducting element to at least one conductor and / or at least one PTC element, wherein at least a first electrical insulating element is provided and the at least one first electrical insulating element is connected to at least one conductor and / or at least one heat conducting element to at least one sauceleiteleme nt electrically isolate from at least one conductor.
  • the at least one first electrical insulating element with at least one conductor and / or at least one heat conducting element preferably exclusively, material and / or positive and / or non-positive, z. B. by means of adhesive and / or a mechanical pressure loading means, for. B. a spring connected.
  • At least one in particular as, preferably hardenable and / or hardened, fluid or, preferably hardenable and / or hardened gel or Isoliergel or fluid formed, second electrical insulating element, for.
  • an adhesive in particular silicone adhesive, on the at least one PTC element and / or the at least one conductor and / or the at least one heat conducting element, in particular a heat conducting plate of the heat conducting, applied, in particular by means of spraying, pumping or pressing, so that Preferably, the at least one second electrical insulation element, the at least one PTC element and / or the at least one conductor and / or the at least one heat conducting element, in particular the heat conduction of the heat conducting element, at least partially electrically isolated in those areas in which the at least one PTC element and / or the at least one conductor and / or the at least one heat-conducting element not in indirect, z. B. by means of an adhesive, or in direct contact with the at least one PTC element and / or the at
  • the at least one second electrical insulating element is an adhesive for connecting the at least one PTC element and / or the at least one conductor and / or the at least one first insulating element and / or the at least one heat-conducting element, in particular a heat-conducting plate of the heat-conducting element, with each other and by means of the adhesive, the at least one PTC element and / or the at least one conductor and / or the at least one heat-conducting element, in particular a heat-conducting plate of the heat-conducting element, are connected to one another in a material-locking manner.
  • an excess of adhesive is applied to the at least one PTC element and / or the at least one conductor and / or the at least one first insulating element and / or the at least one heat-conducting element, as is necessary for the connection and during the material-bonding connection, d. H.
  • the excess is pressed or pressed onto the at least one PTC element and / or the at least one conductor and / or the at least one heat conducting element, so that preferably the at least one second electrical insulating element, the at least one PTC element and / or at least a conductor and / or the at least one heat-conducting element, in particular the heat-conducting plate of the heat-conducting element, at least partially electrically insulated in those regions in which the at least one PTC element and / or the at least one conductor and / or the at least one heat-conducting element are not indirectly, z. B. by means of an adhesive, or in direct contact with the at least one PTC element and / or the at least one conductor and / or the at least one first insulating element and / or the at least one heat conducting element.
  • the at least one first insulating element is connected differently to the heat exchanger than the at least one second insulating element.
  • the at least one first insulating element is introduced differently into the heat exchanger than the at least one second insulating element.
  • the heating of the air takes place exclusively by means of at least one electrical Heating device, in particular a described in this application heat exchanger with a PTC element.
  • the at least one first and / or the at least one second heat-conducting element has a thermal conductivity of at least 1 W / mK, in particular at least 30 W / mK.
  • the at least one first and / or the at least one second insulating element has an electrical insulation of at least 1 kV / mm, in particular at least 25 kV / mm.
  • the at least one first and / or the at least one second insulating element has a dielectric strength of at least 1 kV in cross-section.
  • the at least one first and / or the at least one second insulating element has a thermal conductivity of at least 1 W / mK, in particular at least 25 W / mK.
  • the at least one first and / or the at least one second insulating element can thus on the one hand good electrical insulation and on the other hand, sufficiently good to conduct the heat from the PTC element to the heat-conducting element.
  • the at least one first insulating element is at least two parts.
  • the at least one first insulating element may comprise, for example, a foil and a plate.
  • the plate has a sufficiently high rigidity and is therefore not easily bendable as the film.
  • Fig. 1 shows an automotive air conditioning system 7.
  • an air conditioning housing 9 with a bottom wall 10 and an outlet opening 12, a fan 8, a filter 13, a refrigerant evaporator 14 and an electric heater 15 is arranged.
  • the air conditioning housing 9 thus forms a channel 18 for passing the air.
  • Walls 11 of the air conditioning housing 9 have on the inside a surface 19 which define the channel 18.
  • the air for the interior of a motor vehicle is passed by means of the blower 8 through the filter 13, the refrigerant evaporator 14 and the electric heater 15.
  • the motor vehicle air conditioning system 7 is thus not provided with a heat exchanger through which coolant flows for heating the air conducted through the motor vehicle system 7.
  • the air conducted by the automotive air conditioning system 7 is heated exclusively by means of the electric heater 15.
  • the motor vehicle air conditioning system 7 is preferably in a Motor vehicle with exclusively electric drive or with a hybrid drive used (not shown). In order to achieve the necessary heating power by means of the electric heater 15, the electric heater 15 with high voltage, z. B. with more than 50 volts, operated.
  • Fig. 2 is a first embodiment of the designed as a heat exchanger 6 electric heater 15 of the motor vehicle air conditioning 7 shown.
  • the heat exchanger 6 comprises a plate-shaped PTC element 1 made of ceramic, a first printed circuit board 3 and a second printed circuit board 4 in each case as a conductor 20 in order to be able to conduct electrical current through the PTC element 1.
  • Corrugated ribs 21 as heat-conducting elements 2 conduct the heat generated in the PTC element 1 due to the electrical resistance of the PTC element 1 to the air conducted by the motor vehicle air conditioning system 7.
  • the corrugated fins 21 are attached to a heat conducting plate 16.
  • the corrugated fins 21 increase the surface area available to transfer heat to the air.
  • the two printed circuit boards 3, 4 are glued to the PTC element 1.
  • the heat-conducting elements 2 and the conductors 20 are made of metal, for. B. aluminum.
  • connection or the contact between the corrugated fins 21 or the heat-conducting plate 16 as part of the heat-conducting element 2 and the printed circuit boards 3, 4 takes place indirectly with a first insulating element 5a.
  • the first electrical insulating element 5a is made of plastic, for. As polyimide, ceramics or minerals, z. As MICA, or other material with a sufficiently good thermal conductivity to conduct the heat from the PTC element 1 to the corrugated fins 21 and on the other hand has a sufficiently good electrical insulation to the corrugated fins 21 from the high-voltage printed circuit board 3rd 4 to electrically isolate and thereby upon contact with the corrugated fins 21 an electric shock Person to be able to prevent.
  • the first insulating 5a while cover a broad side of the circuit boards 3, 4 completely, so that the circuit boards 3, 4 only in those areas must be additionally insulated, where the circuit boards 3, 4 not with the first insulating 5a and the PTC element 1 in contact.
  • the printed circuit boards 3, 4 are materially connected to the first insulating member 5a by means of adhesive 23. This also applies to the connection between the first insulating member 5a and the heat conducting plate 16 and the connection between the PTC element 1 and the first and second printed circuit board 3, 4th
  • a second electrical insulating element 5 b is introduced in a cavity 22 which is essentially enclosed by a frame profile 17, the PTC element 1, the two circuit boards 3, 4, the two first insulating elements 5a and the two heat conducting plates 16, a second electrical insulating element 5 b is introduced.
  • the second electrical insulating element 5 b is a, in particular hardenable or hardened, fluid or gel, for. As in the second electrical insulating 5 b is usually no sufficiently high thermal conductivity required as in the first insulating 5 a, because by the second electrical insulating 5 b in the Substantially no heat or only a small amount of heat must be conducted to the heat-conducting element 2.
  • the second electrical insulating element 5 b has a sufficiently high electrical insulation.
  • the second insulating member 5 b can be introduced into the cavity 22 in various ways.
  • the insulating gel 24 or an adhesive 23 is injected or pumped into the cavity 22 through openings in the frame profile 17 or openings in the region of the frame profile 17.
  • the insulating bars 23 or the adhesive 23 with the properties of a fluid and a high viscosity thereby adapts to the boundary surfaces of the cavity 22, formed essentially by the frame profile 17, the PTC element 1, the two printed circuit boards 3, 4, the two first insulating 5a and the two heat conducting plates 16, substantially completely, so that the cavity 22 is completely filled by the adhesive 23 or the insulating gel 24.
  • the PTC element 1 and the two circuit boards 3, 4 are completely electrically insulated from the environment, because in the other areas, the PTC element 1 with the circuit boards 3, 4 are in communication and the two circuit boards 3, 4 with the PTC element 1 and the first electrical insulating 5a is indirectly or directly in communication. Due to the complete, void-free filling of the cavity 22 with the adhesive 23 or the insulating gel 24, the PTC element and the two circuit boards 3, 4 are sealed fluid-tight in the heat exchanger 6, so that in general no leakage currents occur on the outside of the heat exchanger 6 or touching the heat exchanger 6, even with moisture on the surface of the heat exchanger 6, no danger.
  • the insulating gel 24 is designed to the effect that it can not leak after introduction into the cavity 22 by either the insulating gel 24 has a sufficiently high viscosity or on contact with air, the viscosity is increased or the insulating gel 24 at the in with in Contact area slightly hardened.
  • the cavity 22 with the environment only with an opening, for. B. in the frame profile 17, connected.
  • the adhesive 23 or the insulating gel 24 and the insulating fluid 24 is injected and then the opening fluid-tight, z. B. by means of a plug, closed.
  • a hardening of the adhesive 23 or a sufficiently high viscosity of the insulating fluid 24 is not required (not shown).
  • the second insulating member 5 b is a solid as the first insulating member 5 a.
  • the second insulating 5 b has exactly the complementary shape to the cavity 22, so that the second insulating 5 b only in the cavity 22 must be inserted.
  • the connection between the second insulating 5 b as a solid and the cavity 22 is material and / or non-positively and / or positively.
  • a thin layer of adhesive 23 is applied to the second electrical insulating element 5 b and / or the second insulating element 5 b is clamped between the frame profile 17 and the PTC element 1 and the two printed circuit boards 3, 4 (not shown).
  • the first insulating 5 a made of plastic and is connected by means of encapsulation of the first and second circuit board 3, 4 with the first and second circuit board 3, 4.
  • a circuit board 3, 4 is inserted into an injection mold and then introduced into the injection mold, preferably thermoplastic, plastic.
  • the first insulating 5 a plastic is thus directly connected to the first and second circuit board 3, 4.
  • the first insulating 5 a with the first and second circuit board 3, 4 can be applied to the first or second circuit board 3, 4 adhesive before introducing the first or second circuit board 3, 4 in the injection mold (not shown).
  • the PTC element 1 is connected to the two circuit boards 3, 4 in the first embodiment according to Fig. 2 connected by adhesive 23 and the two circuit boards 3, 4 are also connected by means of adhesive 23 to the first insulating 5a.
  • This adhesive 23 for the cohesive connection is not shown in the figures.
  • an excess of adhesive 23 is applied to the PTC element 1, so that when connecting the PTC element 1 to the circuit board 3, 4 of the Excess, which is not required for the cohesive connection, is pressed or pressed into the cavity 22 while the PTC element 1 is pressed onto the printed circuit board 3, 4.
  • the excess of adhesive 23 is dimensioned such that the cavity 22 is completely filled on both narrow sides of the PTC element 1.
  • the adhesive 23 hardens after the connection in the cavity 22, so that the adhesive 23 can no longer leak from the cavity 22 and a permanent insulation of the electric current standing parts 1, 3, 4 is ensured.
  • a second embodiment of the heat exchanger 6 is shown.
  • the heat exchanger 6 is not provided with a frame profile 17, so that the cavity 22 has no boundary on an outer side.
  • the adhesive 23 or the insulating fluid 24 must have a sufficient hardness or viscosity after introduction into the cavity 22, that the cavity 22 is permanently filled with the adhesive 23 or the insulating fluid 24 as a second electrical insulating element 5 b.
  • Fig. 4 a third embodiment of the heat exchanger 6 is shown.
  • the cavity 22 is covered by the heat-conducting plate 16 of the heat-conducting element 2.
  • the heat conducting plate 16, on which the corrugated fins 21 are fixed, is formed in the end region in cross-section arcuate or L-shaped.
  • the heat-conducting plates 16 are electrically insulated from the two printed circuit boards 3, 4 by means of the first electrical insulating element 5 a, so that no danger to the environment can emanate from the two heat-conducting plates 16.
  • Fig. 5 a third embodiment of the heat exchanger 6 is shown.
  • the frame profile 17 covers a in the end region in cross-section T-shaped first insulating member 5 a the cavity 22 partially from.
  • the corrugated fins 21 are attached directly to the first insulating 5 a without a heat conducting plate 16.
  • Fig. 6 is an exploded view of the heat exchanger 6 without the second electrical insulating element 5 b shown.
  • PTC elements 1 are fastened or fixed in recesses of a fixing plate 25.
  • the first insulating 5 a, printed circuit boards 3, 4 and corrugated fins 21 with heat conducting plates 16 are arranged one above the other like a layer.
  • the two printed circuit boards 3, 4 are connected only by means of electrical contacts 26 or electrical lines to the surroundings of the heat exchanger 6 in order to be able to conduct electrical current through the two printed circuit boards 3, 4 and thus the PTC element 1.
  • heat exchanger 6 are stacked one above the other (not shown).
  • Fig. 7 is a further embodiment of a heat exchanger 6 according to the invention shown.
  • the first insulating 5a has a projection with respect to the heat conducting plates 16.
  • the gap formed by the supernatant is completely filled with adhesive 23.
  • FIG. 8a and 8b two further embodiments of a heat exchanger 6 according to the invention are shown.
  • the circuit boards 3, 4 are completely encapsulated with an adhesive.
  • the PTC elements 1 can either be held in a frame 17 (see Fig. 8b ), or it can also be dispensed with the frame (see Fig. 8a ).
  • Fig. 9 is a further embodiment of a heat exchanger 6 according to the invention shown.
  • both the PTC elements 1, and the two circuit boards 3, 4 and the heat-conducting elements 2 are surrounded by insulation.
  • the insulation may be provided, for example, by a surface treatment in an insulating bath.
  • the cohesive connection between the PTC elements and the two printed circuit boards 3 and 4 or between the heat-conducting elements 2 and the two printed circuit boards 3 and 4 is provided by an adhesive.
  • the PTC element 1 and the two printed circuit boards 3, 4 are substantially completely electrically isolated from the environment, so that the high voltage can not pose any danger to the environment.

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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)
EP09175647.8A 2008-11-20 2009-11-11 Caloporteur Active EP2190256B2 (fr)

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EP08291088A EP2190258A1 (fr) 2008-11-20 2008-11-20 Caloporteur
EP09175647.8A EP2190256B2 (fr) 2008-11-20 2009-11-11 Caloporteur

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2393336A1 (fr) * 2010-06-04 2011-12-07 Behr France Rouffach S.A.R.L. Caloporteur
EP2397788A1 (fr) * 2010-06-17 2011-12-21 Behr GmbH & Co. KG Caloporteur et procédé de fabrication d'un tel caloporteur
WO2012025111A3 (fr) * 2010-08-24 2012-04-26 Webasto Ag Dispositif électrique de chauffage de véhicule
FR2966580A1 (fr) * 2010-10-20 2012-04-27 Valeo Systemes Thermiques Echangeur de chaleur et installation de ventilation et de chauffage correspondante
DE102011003296A1 (de) * 2011-01-28 2012-08-02 Behr Gmbh & Co. Kg Wärmeübertrager
EP2607808A1 (fr) * 2011-12-22 2013-06-26 Eberspächer catem GmbH & Co. KG Elément générateur de chaleur
EP2608633A1 (fr) * 2011-12-22 2013-06-26 Eberspächer catem GmbH & Co. KG Elément générateur de chaleur
WO2014009013A2 (fr) 2012-07-11 2014-01-16 Eberspächer Catem Gmbh & Co. Kg Élément générateur de chaleur
EP2731400A1 (fr) * 2012-11-12 2014-05-14 Betacera Inc. Appareil de chauffage électrique avec mécanisme imperméable à l'eau
EP3073801A1 (fr) * 2015-03-26 2016-09-28 Betacera Inc. Dispositif chauffant formé d'un seul tenant
EP3101999A1 (fr) * 2015-06-02 2016-12-07 Eberspächer catem GmbH & Co. KG Élement de chauffage a coefficient de temperature positif (ctp) et dispositif de chauffage electrique pour un vehicule automobile comprenant un tel element de chauffage ctp
EP3340258A1 (fr) * 2016-12-21 2018-06-27 DBK David + Baader GmbH Résistance de décharge
EP3598847A1 (fr) 2018-07-18 2020-01-22 Eberspächer catem GmbH & Co. KG Élément produisant de la chaleur et son procédé de fabrication
EP3731595A1 (fr) 2019-04-24 2020-10-28 Eberspächer catem GmbH & Co. KG Élément chauffant ptc et dispositif chauffant électrique doté d'un tel élément chauffant ptc et procédé de fabrication d'un élément chauffant ptc
CN112788803A (zh) * 2019-11-07 2021-05-11 埃贝赫卡腾有限两合公司 Ptc加热装置、电加热装置以及用于制造电加热装置的方法
EP4255110A1 (fr) * 2022-03-30 2023-10-04 Eberspächer catem GmbH & Co. KG Dispositif de chauffage ptc et dispositif de chauffage électrique comprenant un tel dispositif de chauffage

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2428747B1 (fr) 2010-09-13 2015-04-08 MAHLE Behr GmbH & Co. KG Echangeur de chaleur
EP2428746B8 (fr) 2010-09-13 2021-12-29 MAHLE Behr GmbH & Co. KG Echangeur de chaleur
EP2731399A1 (fr) * 2012-11-12 2014-05-14 Betacera Inc. Élément chauffant isolé

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EP1768458A1 (fr) 2005-09-23 2007-03-28 Catem GmbH & Co.KG Elément chauffant d'un dispositif de chauffage
EP1768457A1 (fr) * 2005-09-23 2007-03-28 Catem GmbH & Co.KG Element chauffant d'un dispositif de chauffage
EP2023056A1 (fr) * 2007-07-30 2009-02-11 Chia-Hsiung Wu Procédé de liaison pour un chauffage d'air et structure de celui-ci

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DE2804749C3 (de) 1978-02-04 1980-07-31 Fa. Fritz Eichenauer, 6744 Kandel Durchlauferhitzer
DE2804818C2 (de) 1978-02-04 1986-12-11 Fritz Eichenauer GmbH & Co KG, 6744 Kandel Elektrische Heizeinrichtung
GB2090710B (en) 1980-12-26 1984-10-03 Matsushita Electric Ind Co Ltd Thermistor heating device
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US5192853A (en) 1991-10-22 1993-03-09 Yeh Yuan Chang Heating set having positive temperatue coefficient thermistor elements adhesively connected to heat radiator devices
EP1515587B1 (fr) 2003-09-11 2006-12-13 Catem GmbH & Co. KG Dispositif de chauffage électrique muni d'un élément chauffant scellé
ES2303712T3 (es) 2005-09-23 2008-08-16 CATEM GMBH & CO. KG Elemento generador de calor para un dispositivo de calefaccion.

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US4327282A (en) 1978-10-21 1982-04-27 Firma Fritz Eichenauer Electrical resistance heating element
US6178292B1 (en) * 1997-02-06 2001-01-23 Denso Corporation Core unit of heat exchanger having electric heater
EP1768458A1 (fr) 2005-09-23 2007-03-28 Catem GmbH & Co.KG Elément chauffant d'un dispositif de chauffage
EP1768457A1 (fr) * 2005-09-23 2007-03-28 Catem GmbH & Co.KG Element chauffant d'un dispositif de chauffage
EP2023056A1 (fr) * 2007-07-30 2009-02-11 Chia-Hsiung Wu Procédé de liaison pour un chauffage d'air et structure de celui-ci

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2393336A1 (fr) * 2010-06-04 2011-12-07 Behr France Rouffach S.A.R.L. Caloporteur
EP2397788A1 (fr) * 2010-06-17 2011-12-21 Behr GmbH & Co. KG Caloporteur et procédé de fabrication d'un tel caloporteur
CN103228998A (zh) * 2010-08-24 2013-07-31 韦巴斯托股份公司 车辆电加热装置
WO2012025111A3 (fr) * 2010-08-24 2012-04-26 Webasto Ag Dispositif électrique de chauffage de véhicule
FR2966580A1 (fr) * 2010-10-20 2012-04-27 Valeo Systemes Thermiques Echangeur de chaleur et installation de ventilation et de chauffage correspondante
DE102011003296A1 (de) * 2011-01-28 2012-08-02 Behr Gmbh & Co. Kg Wärmeübertrager
EP2608633A1 (fr) * 2011-12-22 2013-06-26 Eberspächer catem GmbH & Co. KG Elément générateur de chaleur
US9297551B2 (en) 2011-12-22 2016-03-29 Eberspächer Catem Gmbh & Co. Kg Heat generating element
US9338831B2 (en) 2011-12-22 2016-05-10 Eberspächer Catem Gmbh & Co. Kg Heat generating element
EP2607808A1 (fr) * 2011-12-22 2013-06-26 Eberspächer catem GmbH & Co. KG Elément générateur de chaleur
US10136474B2 (en) 2012-07-11 2018-11-20 Eberspacher Catem Gmbh & Co. Kg Heat generating element
WO2014009013A2 (fr) 2012-07-11 2014-01-16 Eberspächer Catem Gmbh & Co. Kg Élément générateur de chaleur
DE102012013770A1 (de) 2012-07-11 2014-01-16 Eberspächer Catem Gmbh & Co. Kg Wärme erzeugendes Element
EP2873296B1 (fr) 2012-07-11 2016-05-11 Eberspächer catem GmbH & Co. KG Élément chauffant
EP2731400A1 (fr) * 2012-11-12 2014-05-14 Betacera Inc. Appareil de chauffage électrique avec mécanisme imperméable à l'eau
EP3073801A1 (fr) * 2015-03-26 2016-09-28 Betacera Inc. Dispositif chauffant formé d'un seul tenant
CN106231699A (zh) * 2015-06-02 2016-12-14 埃贝赫卡腾有限两合公司 Ptc加热元件和包括这种ptc加热元件的用于机动车辆的电加热装置
EP3101999A1 (fr) * 2015-06-02 2016-12-07 Eberspächer catem GmbH & Co. KG Élement de chauffage a coefficient de temperature positif (ctp) et dispositif de chauffage electrique pour un vehicule automobile comprenant un tel element de chauffage ctp
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
EP3340258A1 (fr) * 2016-12-21 2018-06-27 DBK David + Baader GmbH Résistance de décharge
EP3598847A1 (fr) 2018-07-18 2020-01-22 Eberspächer catem GmbH & Co. KG Élément produisant de la chaleur et son procédé de fabrication
DE102018212012A1 (de) 2018-07-18 2020-01-23 Eberspächer Catem Gmbh & Co. Kg Wärmeerzeugendes Element und Verfahren zu dessen Herstellung
EP3731595A1 (fr) 2019-04-24 2020-10-28 Eberspächer catem GmbH & Co. KG Élément chauffant ptc et dispositif chauffant électrique doté d'un tel élément chauffant ptc et procédé de fabrication d'un élément chauffant ptc
US11913676B2 (en) 2019-04-24 2024-02-27 Eberspächer Catem Gmbh & Co. Kg PTC heating element and electric heating device with such a PTC heating element and method for the production of a PTC heating element
CN112788803A (zh) * 2019-11-07 2021-05-11 埃贝赫卡腾有限两合公司 Ptc加热装置、电加热装置以及用于制造电加热装置的方法
EP3820245A1 (fr) 2019-11-07 2021-05-12 Eberspächer catem GmbH & Co. KG Dispositif de chauffage ptc et dispositif de chauffage électrique doté d'un tel dispositif de chauffage ptc et procédé de fabrication d'un dispositif de chauffage électrique
US11395376B2 (en) 2019-11-07 2022-07-19 Eberspächer Catem Gmbh & Co. Kg PTC heating device and electric heating device with such a PTC heating device and method for producing an electric heating device
EP4255110A1 (fr) * 2022-03-30 2023-10-04 Eberspächer catem GmbH & Co. KG Dispositif de chauffage ptc et dispositif de chauffage électrique comprenant un tel dispositif de chauffage

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Publication number Publication date
EP2190256B1 (fr) 2016-11-02
EP2190258A1 (fr) 2010-05-26
EP2190256B2 (fr) 2024-04-24

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