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EP4468818A1 - Couche chauffante électrique et son procédé de fabrication - Google Patents

Couche chauffante électrique et son procédé de fabrication Download PDF

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Publication number
EP4468818A1
EP4468818A1 EP24157970.5A EP24157970A EP4468818A1 EP 4468818 A1 EP4468818 A1 EP 4468818A1 EP 24157970 A EP24157970 A EP 24157970A EP 4468818 A1 EP4468818 A1 EP 4468818A1
Authority
EP
European Patent Office
Prior art keywords
electrode
layer
electrical
adhesive
heating layer
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.)
Pending
Application number
EP24157970.5A
Other languages
German (de)
English (en)
Inventor
Erhard Rohrmoser
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.)
Individual
Original Assignee
Individual
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 Individual filed Critical Individual
Priority to US18/668,860 priority Critical patent/US20240397584A1/en
Publication of EP4468818A1 publication Critical patent/EP4468818A1/fr
Pending legal-status Critical Current

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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
    • H05B3/10—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor
    • H05B3/12—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material
    • H05B3/14—Heating elements characterised by the composition or nature of the materials or by the arrangement of the conductor characterised by the composition or nature of the conductive material the material being non-metallic
    • H05B3/145—Carbon only, e.g. carbon black, graphite
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • H05B3/36—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs heating conductor embedded in insulating material
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/22—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible
    • 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
    • H05B3/20—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater
    • H05B3/34—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater flexible, e.g. heating nets or webs
    • 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
    • H05B2203/011—Heaters using laterally extending conductive material as connecting means
    • 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
    • H05B2203/017—Manufacturing methods or apparatus for heaters
    • 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
    • H05B2203/026—Heaters specially adapted for floor heating

Definitions

  • the invention relates to an electrical heating layer according to the preamble of claim 1 and a method for its production.
  • a corresponding electric heating foil for use in wall, ceiling or floor heating is available, for example, from EP 2 023 688 A1
  • the known surface heating element comprises an electrically conductive heating foil with electrical contacts formed in the form of a strip in two edge areas of the heating foil, as well as a lower layer and an upper layer between which the heating foil is embedded.
  • the upper layer is formed by a plastic film and the lower layer by a nonwoven fabric.
  • the DE 44 47 407 A1 discloses a method for producing a mechanically resilient and flexible layer composite as a low-voltage heating element for a flat heating element.
  • the layer composite comprises fibrous or filament-like carbon modifications that have a temperature-independent electrical resistance.
  • the heating element is embedded in a curable synthetic resin and connected to a power source at opposite ends.
  • the invention relates to an electrical heating layer, comprising a flat and electrically conductive layer and a first strip-shaped electrode and a second strip-shaped electrode, wherein the first electrode is arranged on the layer at a distance from the second electrode, so that an electrical current flow from the first electrode through the layer to the second electrode is made possible and wherein the layer is designed to convert electrical energy into heat due to its electrical resistance during the current flow.
  • An electrical heating layer is therefore provided, i.e. a layer that can be heated by electrical current and is designed to conduct electricity accordingly, so that a current flow through the heating layer is basically possible. Since the heating layer also has an electrical resistance, the electrical energy that is conducted through the heating layer by means of the current flow is at least partially converted into heat. The heat generated in this way can be used, for example, to heat the area surrounding the heating layer.
  • the layer is flat, whereby the term "flat" in the sense of the invention is understood to mean an essentially two-dimensional layer whose height is negligible compared to its length and width.
  • the length and width of the layer are preferably at least 25 cm up to several meters.
  • the height of the layer is preferably less than 1 cm, particularly preferably less than 5 mm and very particularly preferably less than 3 mm.
  • a layer height of less than 1 mm is also conceivable and preferred.
  • the layer can have a length of 250 cm, a width of 45 cm and a height of 0.2 mm.
  • the material for the heating layer for example carrier foils or plates made of plastic, which Contain metal particles, textile materials such as nonwovens, papers or fabrics in which wire loops or wire nets are attached or also electrically conductive paints or varnishes that are applied to a suitable carrier layer and contain, for example, carbon fibers. All of these materials are basically suitable for use as an electrical heating layer in the sense of the invention.
  • a first strip-shaped electrode and a second strip-shaped electrode are provided.
  • the first and second electrodes are arranged on the heating layer in such a way that there is electrical contact between the first electrode and the heating layer and electrical contact between the heating layer and the second electrode.
  • the electrical contacts are advantageously designed in such a way that the electrical resistance at the contacts is as low as possible. This can be achieved, for example, by connecting the first and second electrodes to the heating layer over as large a surface as possible, i.e. by having comparatively large contact surfaces for the contacts.
  • the first and the second electrode are spaced apart from each other on the heating layer so that, when appropriately energized, a current can flow from the first electrode through the heating layer to the second electrode.
  • the exact spacing of the first electrode from the second electrode is advantageously calculated in advance based on the electrical resistance of the heating layer between the first and second electrodes and on the desired voltage applied to the heating layer.
  • the higher the resistance of the heating mat the closer together the first and second electrodes can be arranged.
  • the higher the desired voltage applied the greater the spacing of the first electrode from the second electrode must be.
  • strip-shaped refers to an essentially two-dimensional shape whose length is many times greater than its width, i.e. a "strip".
  • the length can be at least five times greater than the width.
  • the length of the first and the second electrode corresponds to a length of the heating layer.
  • the strip shape of the first and second electrodes promotes the generation of electrical contacts between the heating layer and the first and second electrodes, respectively, which on the one hand allow a high current flow due to their comparatively large contact areas and the associated low electrical resistance and on the other hand can contact the heating layer over its entire length, so that as much of the heating layer as possible is energized and contributes to heat generation.
  • additional electrodes can also be provided which allow additional current to be supplied to the layer.
  • additional electrodes can also be provided which allow additional current to be supplied to the layer.
  • four, six or eight electrodes can be arranged on the layer, preferably at the same distance from each other, in order to reduce the path length and thus the resistance between two electrodes.
  • the heating layer can also be kept correspondingly small and, if required, several smaller heating layers that can be supplied with current independently of one another can be arranged next to one another.
  • the power supply can be provided by direct current or direct voltage or by alternating current or alternating voltage.
  • the first electrode and the second electrode consist of zinc or a zinc alloy.
  • the electrodes according to the invention made of zinc or a zinc alloy have a significantly increased material toughness, so that the electrodes are not damaged or even destroyed during their attachment to the heating layer, or at least are damaged much less frequently.
  • Zinc or suitable zinc alloys also have a much better resistance to corrosion than copper. They are also easier to paint over, for example with so-called carbon heating paints.
  • a further advantage of zinc or a zinc alloy over copper as a material for the electrodes is that zinc or a zinc alloy is significantly cheaper than copper and no shortage of the material is to be expected.
  • a first electrical supply line for supplying current to the first electrode and a second electrical supply line for supplying current to the second electrode are also strip-shaped and consist of zinc or a zinc alloy.
  • the aforementioned advantages of zinc or the zinc alloy can therefore also be transferred to the electrical supply lines of the first electrode or the second electrode.
  • the first electrical supply line represents a current path from an electrical energy source, for example a household socket or an electrical regulator, to the first electrode.
  • the second electrical supply line represents a current path from the electrical energy source, for example the household socket or the electrical regulator, to the second electrode.
  • the electrical controller is advantageously designed to control a current supply to the first or second electrode.
  • first electrical supply line and the second electrical supply line are also designed in strip form. This makes it possible to ensure the overall flat appearance of the electrical heating layer in the area of the supply lines that are required for the operation or power supply of the heating layer.
  • the first electrical electrode and the second electrical electrode can be arranged, for example, within an electrically insulating, self-adhesive tape. This particularly simplifies the visually inconspicuous attachment of the first electrode and the second electrode, for example to a wall.
  • the first electrical supply line and the second electrical supply line are made of the same material as the first electrode and the second electrode, for example the same zinc alloy. This results in particularly good electrical connections with only a low electrical resistance. between the first electrical supply line and the first electrode and between the second electrical supply line and the second electrode.
  • the zinc alloy has tin and/or lead and/or cadmium and/or iron and/or copper and/or aluminum as alloy components.
  • Zinc alloys which have one or more of the above-mentioned alloy components have proven to be particularly suitable for use as material for the first and second electrodes due to their electrical and mechanical properties.
  • the zinc alloy has the following composition: tin >_ 0.001%, lead >_ 0.05%, cadmium >_ 0.005%, iron ⁇ 0.02%, copper ⁇ 0.04%, aluminum ⁇ 0.03%, zinc ⁇ 99.95%.
  • the percentages refer to the respective weight proportion of the alloy.
  • the layer comprises electrically conductive fibers.
  • This is therefore an at least partially textile heating layer.
  • Such a heating layer is comparatively flexible and at the same time mechanically stable. In addition, it can be processed very easily.
  • the layer is designed as a carbon fiber layer, as carbon paper or as a carbon paint coating on a carrier layer, wherein the electrically conductive fibers are designed as carbon fibers.
  • Carbon fibers enable good electrical conductivity in conjunction with particularly high mechanical flexibility and at the same time resilience.
  • the carbon fibers can be formed as a pure carbon fiber layer, i.e. consist exclusively of carbon, or of carbon paper, in which for example, the carbon fibers are applied to a normal paper or are integrated into a normal paper, i.e. are mixed with the paper fibers.
  • the carbon fibers can also be contained in a paint or varnish and applied in liquid form to a carrier layer. In this case, too, after drying, an electrically conductive carbon coating is present on a carrier material.
  • the first electrode and the second electrode are arranged on the layer by means of an electrically conductive adhesive.
  • the electrically conductive adhesive enables contact between the first electrode and the heating layer and between the second electrode and the heating layer, which has good electrical conductivity or low electrical resistance, so that the heating layer can also be subjected to comparatively high currents.
  • the adhesive can be used to create a reliable and cost-effective connection between the first or second electrode and the heating layer in a simple manner.
  • the first electrode and the second electrode with the layer have a flat surface or are recessed relative to an upper side of the layer.
  • the heating layer can therefore also be processed particularly well and easily, for example as wallpaper in the interior of a building.
  • a "flat surface” is understood to mean a surface that is largely designed as a two-dimensional plane and has neither depressions nor elevations.
  • neither the first electrode nor the second electrode are raised above the layer or elevated relative to the top of the layer, nor recessed relative to the top of the layer or sunk into the layer. In other words, it is a "smooth" surface.
  • the term "recessed into the layer” is understood to mean that the first electrode and the second electrode are recessed relative to the top of the layer, i.e. that the tops of the first electrode and the second electrode are lower than the top of the layer.
  • the top of the layer and the tops of the first electrode and the second electrode therefore do not form a flat surface and are not designed as a two-dimensional plane. Rather, a common surface of the layer, the first electrode and the second electrode each has a step in the area of the first electrode and the second electrode.
  • the heating layer can also be used efficiently as underfloor heating, for example under a floor covering such as laminate or vinyl, since the electrodes do not distance the floor covering from the surface of the heating layer but instead allow it to be in full contact with the heating layer, which promotes heat conduction. Finally, the risk of damage or tearing off the first and second electrodes is reduced if they are not raised above the surface of the heating layer.
  • the first electrode and the second electrode each have an adhesive structure for a paint coat on their side facing away from the layer.
  • the surface of the first or second electrode which is not connected to the layer, for example by means of the electrically conductive adhesive has a special structure in the form of the adhesive structure so that a paint coat adheres better.
  • This design is particularly suitable for paper wallpaper or carbon paper wallpaper which is intended to be painted over with an interior paint.
  • the first electrode and the second electrode are each sealed by a polymer strip and/or that the layer is completely sealed by a polymer film at least on a surface having the first electrode and the second electrode.
  • the polymer strips or the polymer film provide additional mechanical protection as well as electrical insulation. Such electrical insulation can be advantageous in particular when voltages in the range of 240 V can be applied, i.e. when power is supplied or voltage is applied via a household socket.
  • Sealing the first electrode and the second electrode using polymer strips is particularly advantageous when the first electrode and the second electrode are recessed relative to the top of the layer.
  • the surfaces of the first electrode and the second electrode, which are actually recessed into the layer can be raised or thickened to such an extent that the polymer strips have a flat surface with the layer.
  • PLE or PLV can be used as the material for the polymer strips or the polymer film. Both polymers allow reliable electrical insulation and prevent electrical voltages from breaking through and sparks from flying.
  • the invention also relates to a method for producing an electrical heating layer according to the invention, wherein a first strip-shaped electrode is arranged on a flat and electrically conductive layer and wherein a second strip-shaped electrode is arranged on the layer at a distance from the first electrode, so that an electrical current flow is made possible from the first electrode through the layer to the second electrode.
  • the method according to the invention is characterized in that the first electrode and the second electrode consist of zinc or a zinc alloy.
  • the method according to the invention thus enables the production of the heating layer according to the invention. This leads to the advantages already described.
  • the layer it is not necessary for the layer to already have the desired electrically conductive properties before the first electrode and the second electrode are arranged on it. Rather, it is also possible for the layer to be provided with a coating of electrically conductive fibers, in particular carbon fibers, after the arrangement of the first and second electrodes, for example, in order to produce the desired electrical conductivity.
  • the coating can advantageously be a carbon paint or a carbon varnish.
  • the first electrode and the second electrode are arranged on the layer by means of an electrically conductive adhesive, wherein the adhesive is applied to the first electrode before the arrangement of the first electrode and to the second electrode before the arrangement of the second electrode, or wherein the adhesive is applied on both sides to a first carrier tape which is arranged between the first electrode and the layer and is applied on both sides to a second carrier tape which is arranged between the second electrode and the layer.
  • an electrically conductive adhesive enables, as already described, a simple, cost-effective and at the same time reliable connection of the first or second electrode to the layer. In addition, a low electrical resistance at the contacts can thus be ensured.
  • the adhesive can be applied to the first or second electrode, whereby the adhesive is applied to the side of the first or second electrode which is then glued to the layer.
  • the adhesive is first applied to the first or second electrode and the first or second electrode is glued or arranged exclusively on the layer.
  • the adhesive can advantageously be provided in heated liquid form for application to the first or second electrode or for application to the first or second carrier tape.
  • the first carrier strip and the second carrier strip can also be designed as a double-sided adhesive tape, which does not have to be specially provided with the adhesive for the production of the heating layer according to the invention, but already has it.
  • the first electrode and the second electrode are laminated onto the layer using the electrically conductive adhesive while applying heat and pressure.
  • the application of heat reduces the viscosity of the adhesive. Together with the application of pressure, this means that the adhesive can penetrate comparatively deeper into the layer, which on the one hand results in improved resilience and reliability of the adhesive bond. On the other hand, this also improves the electrical conductivity of the contacts, so that they have a lower electrical resistance.
  • the adhesive also fills the previously air-filled spaces between the fibers, there is no longer any room in the layer for sparks to form due to ionized air or the distance between the individual fibers. This also improves the operational reliability of the heating layer.
  • the heat application is dimensioned such that a temperature of at least 130 °C is reached at the first electrode and at the second electrode. The temperature is then transferred from the first electrode or the second electrode to the adhesive, among other things, whereby the adhesive is advantageously not heated to 130 °C.
  • This mass of fibers and adhesive is now able to hold the pressed-in first or second electrode in its pressed-in position, so that the first or second electrode with the layer has a flat surface or is even lowered compared to the top of the layer, i.e. the first or second electrode is lower than the rest of the surface of the layer.
  • this has the advantages that the visual impression of the heating layer is not impaired, that later use is facilitated and that the risk of damage or tearing off of the first and second electrodes is reduced.
  • the heat application and the pressure application are applied simultaneously by a heatable pressing element.
  • the heat application and the pressure application can take place in the same manufacturing step, which both accelerates and simplifies the manufacturing process and promotes the interaction between the heat application and the pressure application.
  • a first heatable pressing element is provided for the first electrode and a second heatable pressing element is provided for the second electrode.
  • the first and second electrodes can thus be arranged on the layer at the same time, which speeds up production.
  • the heatable contact pressure element can, for example, be designed as an electrically heatable roller which is rolled over the first or second electrode once or several times with the desired contact pressure and the desired temperature.
  • the heatable pressing element is not only designed as a single heatable roller, but as two heatable rollers, which apply the heat and pressure to the first and second electrodes from opposite sides, i.e. from the top of the heating layer and from the bottom of the layer. This allows a comparatively greater contact pressure to be exerted on the first and second electrodes, so that the first and second electrodes can be sunk into the layer particularly easily compared to the top of the layer.
  • the heatable pressing element can also comprise four rollers, with two rollers acting on the first and second electrodes from the top of the heating layer and two rollers acting on the first and second electrodes from the bottom of the heating layer.
  • all four rollers can apply the pressure and an upper and a lower roller can apply the temperature. This enables the first and second electrodes to be applied with the contact pressure even more effectively.
  • the heat application to the first and second electrodes can also be carried out by hot air, induction or laser irradiation.
  • the heat application can be carried out in two stages, with a first heat application taking place using hot air and then a second heat application using the heatable roller until the desired final temperature is reached.
  • the first electrode and the second electrode are cooled after they have been arranged on the layer.
  • the overall manufacturing process can be accelerated because the cooling and hardening of the adhesive is accelerated.
  • the cooling of the first or second electrode and thus also of the adhesive can advantageously be carried out by an electrically coolable roller, which is rolled over the first electrode and the second electrode in particular under a predeterminable pressure. In this way, the pressure that was previously applied during heating of the adhesive can also be maintained during cooling and curing.
  • the rolling movement of the coolable roll can also be repeated once or several times.
  • Fig. 1 shows by way of example and schematically a possible embodiment of a method according to the invention for producing an electrical heating layer in the form of a flow chart.
  • a flat and electrically conductive layer 20, for example a carbon paper 20, as well as a first electrode 30 and a second electrode 40 are provided.
  • the first electrode 30 and the second electrode 40 are strip-shaped, for example each with a length of 300 cm and a width of 4 cm.
  • the first electrode 30 and the second electrode 40 are made of a zinc alloy, for example.
  • the layer 20 also has a length of 300 cm, for example, and its width is 50 cm.
  • an electrically conductive adhesive 60 is applied to the first electrode 30 and to the second electrode 40.
  • the arrangement of the first electrode 30 and the second electrode 40 on the layer 20 then begins in step 120.
  • the first electrode 30 and the second electrode 40 are first positioned and aligned on the layer 20.
  • the alignment and positioning is carried out, for example, such that the first electrode 30 is positioned on a first longitudinal edge of the layer 20 and the second electrode 40 is positioned on a second longitudinal edge of the layer 20.
  • the alignment is carried out along the longitudinal edges of the layer 20 and parallel to one another.
  • step 130 the first electrode 30 and the second electrode 40 are laminated to the layer 20 using the electrically conductive adhesive 60 under heat and pressure.
  • the heat is applied such that the first electrode 30 and the second electrode 40 are each heated to, for example, 145 °C.
  • the heat generated flows away to the surroundings of the first electrode 30 and the second electrode 40, including to the adhesive 60.
  • the adhesive 60 does not reach the temperature of 145 °C.
  • step 140 The application of heat in step 140 nevertheless causes the adhesive 60 to melt and become comparatively thin.
  • step 150 results in the adhesive 60 as well as the first electrode 30 and the second electrode 40 being pressed into the layer 20 and the adhesive 60 being completely absorbed by the layer 20 and encapsulating the carbon fibers of the layer 20.
  • the heat application and the pressure application are carried out simultaneously by a heatable pressing element, which is designed as an electrically heatable roller and is rolled several times over both the first electrode 30 and the second electrode 40.
  • step 160 for example, another roll is rolled several times over the first electrode 30 and the second electrode 40 under pressure, whereby this additional roll can be cooled electrically.
  • the adhesive 60 hardens quickly and the first electrode 30 and the second electrode 40 are firmly connected to the layer 20.
  • the first electrode 30 and the second electrode 40 are held in the layer 20 and form a flat surface with the top of the layer 20. Between the first electrode 30 and the second electrode 40, an electric current can flow when the first electrode 30 and the second electrode 40 are energized.
  • the first electrode 30 and the second electrode 40 are each sealed with a polymer strip. This at least partially protects the first electrode 30 and the second electrode 40 against mechanical damage. In addition, electrical insulation is created, which increases the operational reliability of the heating layer 10.
  • the electrical heating layer 10 produced in this way can now be used, for example, as heatable wallpaper for the interior of a building.
  • a second heat application to the second electrode 40 also takes place by means of a second heatable pressing element, which also comprises two electrically heatable rollers, of which a first electrically heatable roller acts from an upper side of the heating layer 10 onto the second electrode 40 and a second electrically heatable roller acts from an underside of the heating layer 10 onto the second electrode 40.
  • the electrical heating layer 10 comprises a flat and electrically conductive layer 20 as well as a first strip-shaped electrode 30 and a second strip-shaped electrode 40.
  • the first electrode 30 and the second electrode 40 are made of zinc.
  • the layer 10 consists, for example, of a carbon composition with carbon fibers.
  • the first electrode 30 and the second electrode 40 can be electrically contacted via the cables 31 and 41.
  • the first electrode 30 is arranged on the layer 20 at a distance from the second electrode 40, so that an electrical current flow is possible from the first electrode 30 through the layer 20 to the second electrode 40. Since the layer 20 also has an electrical resistance, electrical energy is converted into heat during the current flow.
  • the first electrode 30 and the second electrode 40 are arranged on the layer 20 by means of an electrically conductive adhesive 60, forming a flat surface with the upper side of the layer.
  • first electrode 30 and the second electrode 40 each have an adhesive structure for a paint coating on their side facing away from the layer 20.
  • the first electrode 30 is contacted or supplied with current by a first electrical supply line and the second electrode 40 is contacted or energized by a second electrical supply line.
  • the first electrical supply line and the second electrical supply line are designed in strip form, for example, analogous to the first electrode 30 and the second electrode 40.
  • the first electrical supply line and the second electrical supply line are also made of zinc, for example.
  • Fig. 3 shows, by way of example, a schematic and partial cross-section of a possible embodiment of an electrical heating layer 10 according to the invention.
  • the adhesive 60 was liquefied by applying heat and pressed into the fibers of the layer 20 by applying pressure, where it filled the gaps between the fibers that were previously filled with air. Since there is no longer any room for sparks to form due to ionized air or due to the distance between the individual fibers, the risk of fire can also be reduced.

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EP24157970.5A 2023-05-24 2024-02-15 Couche chauffante électrique et son procédé de fabrication Pending EP4468818A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US18/668,860 US20240397584A1 (en) 2023-05-24 2024-05-20 Electrical heating layer and method for its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102023113534.1A DE102023113534A1 (de) 2023-05-24 2023-05-24 Elektrische Heizschicht und Verfahren zu deren Herstellung

Publications (1)

Publication Number Publication Date
EP4468818A1 true EP4468818A1 (fr) 2024-11-27

Family

ID=89977628

Family Applications (1)

Application Number Title Priority Date Filing Date
EP24157970.5A Pending EP4468818A1 (fr) 2023-05-24 2024-02-15 Couche chauffante électrique et son procédé de fabrication

Country Status (3)

Country Link
US (1) US20240397584A1 (fr)
EP (1) EP4468818A1 (fr)
DE (1) DE102023113534A1 (fr)

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4447407A1 (de) 1994-12-24 1996-07-11 Debolon Dessauer Bodenbelaege Verfahren zur Herstellung eines mechanisch belastbaren, flexiblen Schichtverbundes als Niederspannungs-Heizelement für flächenförmige Temperaturstrahler und flächenförmiges flexibles Heizelement
EP2023688A1 (fr) 2007-08-03 2009-02-11 Frenzelit Werke GmbH & Co. KG Système de chauffage de surfaces
EP3530936A1 (fr) * 2018-02-27 2019-08-28 Beijing Goldwind Science & Creation Windpower Equipment Co. Ltd. Appareil de chauffage électrique pour le dégivrage, son procédé de fabrication, pale et éolienne la comportant
EP3135075B1 (fr) * 2014-04-24 2020-04-08 Saint-Gobain Glass France Vitre électriquement chauffante comprenant une zone de commande
WO2022167434A1 (fr) * 2021-02-05 2022-08-11 Saint-Gobain Glass France Vitre composite comprenant une fenêtre de caméra pouvant être chauffée électriquement
KR20220150117A (ko) * 2021-05-03 2022-11-10 주식회사 누리비스타 면상 발열체 및 이의 제조방법
EP4136291A1 (fr) 2020-04-15 2023-02-22 RESO Oberflächentechnik GmbH Papier électriquement conducteur

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