WO2010142781A1 - Bande ou baguette d'alimentation servant à l'alimentation en énergie électrique d'un élément chauffant plat - Google Patents

Bande ou baguette d'alimentation servant à l'alimentation en énergie électrique d'un élément chauffant plat Download PDF

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Publication number
WO2010142781A1
WO2010142781A1 PCT/EP2010/058220 EP2010058220W WO2010142781A1 WO 2010142781 A1 WO2010142781 A1 WO 2010142781A1 EP 2010058220 W EP2010058220 W EP 2010058220W WO 2010142781 A1 WO2010142781 A1 WO 2010142781A1
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WO
WIPO (PCT)
Prior art keywords
strip
feed belt
heating element
feed
belt
Prior art date
Application number
PCT/EP2010/058220
Other languages
German (de)
English (en)
Inventor
Elvan SENTÜRK
David Wiedenroth
Original Assignee
Strähle + Hess GmbH
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 Strähle + Hess GmbH filed Critical Strähle + Hess GmbH
Publication of WO2010142781A1 publication Critical patent/WO2010142781A1/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
    • H05B3/20—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
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/005—Heaters using a particular layout for the resistive material or resistive elements using multiple resistive elements or resistive zones isolated from each other
    • 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
    • H05B2203/002—Heaters using a particular layout for the resistive material or resistive elements
    • H05B2203/007—Heaters using a particular layout for the resistive material or resistive elements using multiple electrically connected resistive elements or resistive zones
    • 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
    • H05B2203/013—Heaters using resistive films or coatings
    • 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
    • H05B2203/016—Heaters using particular 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
    • 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
    • H05B2203/029—Heaters specially adapted for seat warmers

Definitions

  • the invention relates to a novel feed belt or a novel feed strip for supplying a planar heating element with electrical energy.
  • the invention relates to a planar heating element, which comprises such a feed belt or a feed bar, and various uses of the planar heating element, in particular in seat heaters, floor or wall coverings and heatable containers.
  • the surface heaters described above typically include a carrier coated with an electrically conductive material.
  • the support may be a grid, braid or fabric made of glass fibers (or else polyester or polyamide filaments) which contains a graphite particle-containing polyurethane binder, ie conductive plastic material, as described in European Patent EP 1 554 911 Bl.
  • planar heating element it is generally advantageous if this comprises a plurality of power supply lines which divide the heating element into a plurality of surface sections.
  • the electrical resistance of the planar heating element is substantially independent of its size. In addition, this increases the reliability of the heating element, since damage or separation of the carrier and / or the coating affects only the corresponding area section thereof.
  • the power supply lines are e.g. Copper wires, which are parallel to each other at regular intervals in the support of the flat heating element (for example, a grid with a mesh size of about 5 mm) are incorporated, and to each of which a positive or negative voltage is alternately applied.
  • the connection of the power supply lines to the power supply is relatively complicated, since each power supply line is individually connected, e.g. must be connected by soldering. This is very time-consuming and labor-intensive for larger heating elements, moreover, the required wiring for each installation situation of the heating element must be adjusted according to the spatial conditions and the cables are laid accordingly.
  • the invention has for its object to provide a simple, flexible and versatile applicable way for the connection of a flat heating element to the electrical power supply.
  • a feed belt or a feed bar of the type mentioned wherein the band or the strip is essentially formed of an electrically insulating material and at least a first and a second electrical conductor comprises, which are spaced from each other in the longitudinal direction of Band or bar surrounded by the insulating material; wherein a plurality of first and second contact portions are arranged at predetermined intervals along the band or the strip, in which the first and second electrical conductors are accessible from one side of the band or the strip; and wherein the first contact portions are offset from the second contact portions in the longitudinal direction.
  • the feed belt according to the invention or the feed strip according to the invention can be connected to a planar heating element, which comprises a plurality of Stromzu- lines, so that the individual power supply lines are alternately in contact with the first electrical conductor or with the second electrical conductor.
  • a planar heating element which comprises a plurality of Stromzu- lines, so that the individual power supply lines are alternately in contact with the first electrical conductor or with the second electrical conductor.
  • feed belt and a feed rail in the context of the present invention refers to the flexibility of the electrically insulating material of which the tape or the strip is formed.
  • the invention also encompasses those strips or strips in which the electrically insulating material has an average degree of flexibility and which therefore could be appropriately termed both terms (for example hard rubber).
  • feed band will be used hereafter for all embodiments of the invention, without this being understood as a restriction to a specific material or a certain flexibility, unless explicitly stated otherwise.
  • the two sides of the feed belt according to the invention are defined with respect to the plane in which the first and second electrical conductors in
  • the electrical conductors in the first or second contact sections are accessible from one side of the band, ie this side forms the contact surface between the input and output sides. feeding belt and a flat heating element. This does not exclude that contact sections are arranged on the opposite side of the feed belt, but as a rule this is not necessary or desirable.
  • the distances between adjacent first contact portions and between adjacent second contact portions are each substantially equal.
  • the second contact sections are preferably each arranged in the middle between two adjacent first contact sections. In this way, alternately first and second contact portions follow at regular intervals, so that the feed belt according to the invention can be used in combination with a flat heating element with a corresponding regular sequence of power supply lines.
  • the distances between the contact portions should be adapted to the corresponding distances in the flat heating element, which may vary depending on the type and dimensions of the heating element.
  • the distances between adjacent first contact portions and between adjacent second contact portions are in the range of about 5 to about 20 cm, in particular in the range of about 8 to about 15 cm.
  • the length of the contact sections is preferably about 3 to about 15 mm, more preferably about 8 to about 12 mm.
  • the contact sections should have a sufficient length, so that even with slightly irregular distances between the power supply lines of the planar heating element in each case an electrically conductive contact between the power supply line and the contact section is ensured. Too short contact sections further complicate the correct positioning of the feed belt to the heating element.
  • the contact sections should not be significantly longer than is necessary under the aspects described, otherwise Stands also areas of the heating element between the power supply lines come directly into contact with the contact portions, which can lead to a higher current and overheating of the heating element in this area.
  • the electrical conductors in the feed belt according to the invention are preferably formed from a metallic material which has a good electrical conductivity. Particularly preferred are electrical conductors made of copper or silver.
  • the first and the second electrical conductor can be designed in particular as a metal profile, as a metal strip, as a metal mesh or as a stranded wire.
  • Metal strips, braids and strands are characterized by high flexibility and are therefore used with particular advantage in a feed belt with a likewise flexible electrically insulating material.
  • the use of strands e.g., copper strands
  • strands is particularly advantageous in that they are deformable to some extent, and thus the largest possible contact area can be achieved when contacting the power supply lines of the planar heating element.
  • a rather inflexible metal profile for the electrical conductors can alternatively also be used.
  • the electrical conductors can also be formed by a conductive coating, in particular by a coating of the electrically insulating material of the feed belt.
  • a conductive coating preferably comprises a printed, vapor-deposited or sputtered metal.
  • the electrical conductors may also comprise conductive staple fiber yarns.
  • the electrically insulating material comprises a textile material.
  • Textile materials are typically very flexible and can be bent and kinked almost anywhere without the risk of damage. In this case, it is in the Feed band according to the invention around a band in the literal sense.
  • the feed belt can be fastened in a simple manner by sewing on the planar heating element.
  • the feed belt can also be glued to the heating element or connected by means of staples.
  • the textile material is preferably a woven, knitted or knitted ribbon or a nonwoven ribbon.
  • Such textile tapes can be produced in a large length as a mat terware, the user then depending on the dimension of the flat heating element ablticiant a corresponding piece.
  • a woven tape is particularly preferred because it has higher tensile strength and dimensional stability than knitted or knitted tapes.
  • the electrical conductors are accommodated in each case in tubular, longitudinally extending, tubular regions of the woven, knitted or knitted strip or of the nonwoven strip.
  • Such tubular areas are conveniently incorporated web, knitting or knitting technology in the band.
  • the warp threads extend in the longitudinal direction and the weft threads in the direction of the width of the feeder band, wherein in the tubular regions there are in each case two layers of warp threads, between which the electrical conductor is arranged, and in each case half of the weft threads one or the other layer of warp threads runs.
  • the electrical conductors in this case for example copper strands, can be umwebt in this way, ie they are already integrated in the manufacture of the woven tape in the tubular areas.
  • the electrical conductors are umwebt as closely as possible, so that they are held positively in the tubular areas and can be moved only with a certain effort in the longitudinal direction.
  • the feed belt preferably also has two opposite edge regions, between which the tubular regions for the electrical conductors are arranged.
  • This edge regions can be used in particular to sew the feed belt according to the invention with a flat heating element.
  • In the edge regions and optionally in a central region between the tubular regions for the first and for the second electrical conductor is usually a simple woven tape before (or a knitted or knitted band or a nonwoven tape).
  • the feed belt made of a textile material described above can be used very simply and flexibly to power a flat heating element:
  • the feed belt is cut to the required length and perpendicular to the power supply lines of the heating element with the corresponding positioning of the first and second contact portions sewn on this.
  • the feed belt can be arranged both along the edge and inside the heating element (for example in the middle).
  • one of the edge regions of the woven, knitted or knitted belt or web is widened such that when the belt is folded along a longitudinal center line, the widened edge region over the tubular regions for the electrical conductors and over the opposite edge region to come to rest.
  • a feed belt is mounted along the edge of a planar heating element, wherein the edge of the heating element comes to lie along the center line of the feed belt and then the widened edge region is folded over. The two regions of the feed belt lying above each other can then be sewn to the heating element in between.
  • This embodiment of the feed belt according to the invention has the advantage that the two-layer sewing of the feed belt, the power supply lines of the heating element and the Kon- Clock portions of the electrical conductors of the feed belt are pressed together with a larger force, whereby a better electrical contact can be made. Furthermore, the contact sections are covered by the widened edge region and thus protected against undesired contact, which is of particular importance in the case of heating elements with a large-mesh structure. Even sewing a large-meshed heating element with a simple feed belt can be problematic, a double-layered structure also avoids this problem.
  • the distributed along the feed belt contact portions may be formed by recesses of the textile material on one side of the belt. Such recesses may e.g. by cutting or punching the textile material in the respective sections of the tubular regions.
  • the contact sections are formed by the electrical conductors passing through the textile material. This is to be understood as a type of floating of the electrical conductor, i. in the case of a woven belt, the electrical conductor emerges from the tubular region at one end of the contact section between two weft threads displacing the warp threads to the side and rejoins the same at the other end of the contact section
  • the textile material of the feed belt according to the invention may be made of synthetic and / or natural fibers, with fibers having a high tensile strength being particularly favorable. Preference is given to polyesters, polyamides or mixtures thereof.
  • the textile material is flame-retardant. This contributes to the reliability of the heating element, since overheating in such systems can never be completely ruled out. It is also advantageous to use glass fibers for the textile material, which have both high strength and temperature resistance.
  • the feed belt further comprises a third and a fourth electrical conductor, which extend from one another in the longitudinal direction of the band and are surrounded by the insulating material; wherein a predetermined number of third and fourth contact portions are arranged at predetermined intervals along the band, in which the third and fourth electrical conductors are accessible from one side of the band, such that upon folding or bending of the band along an inward direction A third contact portion on a second contact portion and a fourth contact portion on a first contact portion comes to lie longitudinally extending center line.
  • This embodiment of the feed belt is arranged along the edge of a planar heating element and folded around the edge, substantially in the manner described above for a feed belt of a textile material with a widened edge region. Due to the presence of a third and a fourth electrical conductor, which are formed mirror-inverted including their respective contact portions to the second or first electrical conductor, each power supply line of the planar heating element with two contact portions in electrically conductive contact.
  • the power supply lines are fixed in particular between these two contact sections, which are compressed, for example, by sewing the feed belt, so that a better and / or more reliable electrically conductive contact can be achieved.
  • the first and fourth electrical conductors of the feed belt are connected to the positive pole and the second and third electrical conductors are connected to the negative pole of the electrical energy source (or vice versa).
  • the feed belt according to the invention with four electrical conductors is a feed belt made of a textile material
  • the above embodiments also apply to the preferred embodiment of the tubular regions, for the formation of the contact sections, etc. with respect to the third and fourth electrical conductors
  • one or more signal lines may additionally be provided, which likewise extend in the longitudinal direction of the belt.
  • Such signal lines are likewise electrical conductors which, however, do not serve the power supply of the flat heating element, but rather the transmission of signals from the heating element to an evaluation and / or control device.
  • the signal lines may therefore typically have a higher resistance (ie, less cross-section, for example) than the first and second electrical conductors.
  • the signals transmitted by the signal line may be e.g. to be the actual electrical resistance of the heating element, from which the actual temperature can be determined, or to a signal from a particular sensor integrated in the heating element, such as a sensor. a seat occupancy sensor in the case of a seat heater for motor vehicles.
  • a further preferred embodiment of the invention relates to a feed strip in which the electrically insulating material comprises a plastic material.
  • the electrically insulating material comprises a plastic material.
  • a feed strip in the sense of the present invention is relatively dimensionally stable and has a significantly lower flexibility, and this does not have to be a disadvantage in some applications of surface heating.
  • the plastic material from which the feed strip is formed preferably comprises a thermoplastic or an elastomer. While a large number of representatives of these substance categories can in principle be used, high-performance Materials such as polyphenylene sulfide or polyether ketone preferred because of their high temperature resistance.
  • the feed strip is produced by a jacket of the electrical conductors with the plastic material by means of an injection molding or extrusion process.
  • two parallel electrical conductors can be encapsulated in an extrusion process with the plastic material.
  • electrical conductors here e.g. Strands or even stable metal profiles are used.
  • the contact portions are preferably formed by recesses of the plastic material on one side of the feed bar. Such recesses may be produced after completion of an injection molding or extrusion process by removing the plastic material along the contact portions by cutting, grinding, milling or the like. For this purpose, it is advantageous if the plastic material forms only a relatively thin layer on the electrical conductors on the side of the strip on which the contact portions are provided. If the plastic material is provided on this side at regular intervals with predetermined breaking points, which is e.g. is possible in an injection molding process, the contact portions can be obtained by breaking the plastic material.
  • this comprises a lower region and an upper region, which are connected to one another via a flexible region in the longitudinal direction, wherein the first and the second electrical conductor are arranged in the lower region, and wherein the upper region such pivotable is that in a closed position of the bar over the contact portions of the first and the second electrical conductor comes to rest.
  • a feed bar is connected to an edge of a planar heating element by clamping the edge of the heating element between the lower and upper regions of the feed bar.
  • the flexible area which allows the bar to be opened and closed in the form of a pivoting movement, is preferably obtained by virtue of the fact that the plastic material in this area is sufficiently thin.
  • the feed strip can be provided with additional sealing elements, such as e.g. Clamps are fixed in the closed position.
  • additional sealing elements such as e.g. Clamps are fixed in the closed position.
  • the feed bar itself comprises one or more closure elements, by means of which it can be fixed in the closed position.
  • latching elements may each be arranged on the lower and / or upper area of the strip, which engage in corresponding recesses in the respective other area, e.g. in the form of a snap closure.
  • the closure elements are preferably arranged in each case in the vicinity of the contact portions of the first and the second electrical conductor, in order to allow the best possible non-positive fixing of the planar heating element, especially in these areas.
  • a third and a fourth electrical conductor are arranged in the upper area.
  • the power supply lines of the heating element are respectively fixed between two contact sections of the first and the fourth electrical conductor or of the second and the third electrical conductor, as already described above for the feed belt according to the invention in general and in particular for a feed belt of a textile Material was explained.
  • the same advantages can be realized with four electrical conductors even with a feed bar made of a plastic material.
  • the contact portions of the third and fourth electrical conductors can be formed in the same manner as in the first and second electrical conductors.
  • the present invention further relates to a planar heating element, comprising a plurality of substantially parallel power supply lines and a feed belt (or a feed bar) of the type described above, wherein each power supply to at least one contact portion of the first or the second electrical conductor of the feed belt in electrically conductive Contact stands.
  • a planar heating element comprising a plurality of substantially parallel power supply lines and a feed belt (or a feed bar) of the type described above, wherein each power supply to at least one contact portion of the first or the second electrical conductor of the feed belt in electrically conductive Contact stands.
  • the type of connection between the flat heating element and the feed belt has already been described in detail above.
  • the feed belt can be sewn or glued to the heating element or fixed by means of closure elements.
  • the heating element according to the invention can be installed and connected with very little effort, since only one end of the first (and possibly the fourth) electrical conductor with the positive pole and one end of the second (and optionally the third) electrical conductor to the negative terminal of the power source must be connected (or vice versa).
  • a positive or negative voltage is alternately applied to the current supply lines of the heating element, which leads to a corresponding current flow perpendicular to the current supply lines in the intermediate surface sections of the heating element.
  • the feed belt is preferably arranged substantially perpendicular to the power supply lines.
  • the distance between a first contact portion and an adjacent second contact area corresponds to the distance between two power supply lines of the heating element.
  • this is arranged either along the edge or within the surface of the heating element, as described above.
  • the planar heating element itself ie the surface heating
  • the heating element comprises a grid, mesh, fabric or the like coated with an electrically conductive material, into which the power supply lines are incorporated at regular intervals.
  • the heating element can be used as a heating element, a grid of glass fibers, which is coated with a dispersion of graphite particles in a polyurethane binder.
  • the power supply lines comprise in particular copper or silver wires or strands, which are also provided with the coating.
  • the coating of the electrically conductive material can be applied, for example by means of a dipping process on the grid, wherein the coating preferably has a thickness of about 0.3 mm to about 0.5 mm.
  • the power supply lines may protrude at an edge of the heating element where the feed belt is located. In this way, it can be avoided that adjacent to the power supply lines and surrounding areas of the heating element are in direct contact with the contact portions of the electrical conductors, which can lead to increased current flow in the longitudinal direction of the feed belt and thus to a higher temperature in the region of the edge. Alternatively or additionally, this problem can also be counteracted by selecting the length of the contact sections as small as possible, as has already been explained above.
  • the heating element according to the invention can be used very widely.
  • the present invention is in this context, the use of a planar heating element of the type described above for heating upholstered furniture, motor vehicle seats, interior trim of motor vehicles, mattresses, seat and recliner or electric blankets.
  • the heating element can be easily inserted between two pads or the like in such applications and connected in the manner described above to the power source.
  • Particularly preferred in this context are flexible feed belts which do not or only to a small extent impair the advantageous flexibility and adaptability of the heating element.
  • the invention relates to a modular element for a floor or wall covering of a plastic material, comprising a planar heating element of the type described above, which is embedded in the plastic material.
  • planar heating element is arranged as close to the surface as possible on one side of the modular element, so that the majority of the heat generated only via this one side of the modular element in the form of convection and / or thermal radiation becomes.
  • the plastic material from which the modular elements are formed preferably comprises a foamed or expanded plastic.
  • the weight of the modular element can be significantly reduced by means of such a material, and, on the other hand, a good thermal insulation is achieved in the direction of the side of the modular element facing away from the heating element.
  • a particularly preferred material is expanded polypropylene (EPP), which in addition to the advantages mentioned also has sufficient mechanical strength to be used for a floor or wall covering can.
  • the modular element comprises connecting elements which enable a positive and / or non-positive connection of a plurality of modular elements.
  • the connecting elements may be in the form of tongue and groove systems, click systems or the like, as they are known per se from the prior art.
  • this system of modular elements is particularly suitable for facilities that are only needed temporarily and then dismantled, such as exhibition stands.
  • the egg ⁇ speisband is arranged in the modular element so that when connecting a plurality of modular elements, the electrical conductors in adjacent modular elements are each in electrically conductive contact.
  • the first and second electrical conductors in each of the elements are interconnected so that only the electrical conductors of the first modular element in the series must be connected to the electrical energy source.
  • the electrical conductors each have mutually corresponding electrical connection elements at their opposite ends.
  • the corresponding electrical connection elements may in particular comprise plugs at one end of the electrical conductors and bushings at the opposite end, which engage in the connection of the modular elements.
  • the electrical connection elements are designed such that the meshing can take place in the longitudinal direction of the feed belt and / or transversely thereto.
  • the invention also relates to a heatable container made of a plastic material, comprising a planar heating element of the type described above, which is embedded in the plastic material.
  • a container is particularly suitable for the transport of food.
  • Foamed or expanded plastics which have already been described above in connection with the modular elements for floor or wall coverings, in particular expanded polypropylene (EPP), are preferably used as the plastic material for the heatable container.
  • the container may have an outer covering, as an additional protection and / or to be able to make the outside of the container visually attractive.
  • the container preferably has a bottom and at least one wall extending transversely from the bottom, the planar heating element being embedded both in the bottom and in the at least one wall. As a result, the interior of the container can be heated uniformly.
  • the planar heating element is preferably arranged as close as possible to the interior of the container, i. as close as possible to the interior of the surface facing the plastic material, so that the majority of the heat generated is delivered to the interior and the plastic material to the outside acts insulating.
  • the heatable container may e.g. be cylindrical with a round bottom and a cylindrical wall. Particularly practical, however, is a cuboid container with a rectangular bottom and four vertical to the ground, in pairs parallel walls. In this case, a single planar heating element, which has approximately the shape of a cross, be embedded in the bottom and the four walls of the container. To supply this heating element with electrical energy, only one feed belt is required, which conveniently extends through two opposite walls as well as the bottom of the container.
  • this comprises electrical connection elements, which are each connected to an electrical conductor in the feed belt.
  • the heating be powered by an external power source with electricity, for example via a socket in a motor vehicle.
  • the heatable container comprises an accumulator.
  • the container can be heated at least for a certain time independently of an external power source.
  • the container comprises a lid into which the accumulator is integrated.
  • corresponding electrical connection elements can be arranged, which are connected to the accumulator or to the electrical conductors of the feed belt.
  • the corresponding connection elements engage each other and the heating element is powered by the accumulator with power.
  • this embodiment has the advantage that the loading and unloading of the container eliminates the weight of the accumulator, whereby the handling of the container is facilitated.
  • connection elements e.g. has at the opposite ends of the feed belt, which serve on the one hand for connection of the accumulator in the lid and on the other hand for connection to an external power source.
  • the container according to the invention can be made relatively inexpensive because of its simple structure and offers a convenient way to keep food relatively evenly warm, for example, during transport with a motor vehicle.
  • a container can also be used as a cooling container due to the good insulating effect of the plastic material, for example, in place of an operation of the heating element, a cooling battery is arranged in the interior of the container.
  • Figure 1 a first embodiment of a feed belt according to the invention
  • Figure 2 a second embodiment of an inventive
  • Figure 3 the connection of the feed belt according to the figure 2 with a flat heating element
  • Figure 4 an embodiment of a flat heating element according to the invention
  • Figure 5 an embodiment of a heatable container according to the invention.
  • FIG. 6 shows a planar heating element for the container according to FIG. 5.
  • the feed belt 10 is formed of a textile material in the form of a woven belt 12, which is e.g. made of polyester or polyamide fibers.
  • the warp threads (K) of the woven band 12 extend in the longitudinal direction and the weft threads (S) perpendicular thereto along the width of the feed belt 10.
  • a knitted or knitted band or a nonwoven band could be used.
  • the feed belt 10 comprises a first electrical conductor 14 and a second electrical conductor 16 which extend in the longitudinal direction of the feed belt 10 and in tubular regions 18 and 20 of the woven Bandes 12 are included.
  • the tubular regions 18 and 20 are weaving incorporated into the woven tape 12, wherein in these areas in each case half of the weft threads below or above the electrical conductors 14 and 16 (based on the drawing plane) runs.
  • the feed belt 10 can be produced by weaving the electrical conductors 14 and 16, the electrical conductors 14 and 16 being held in the tubular regions 18 and 20, respectively, by frictional connection.
  • the electrical conductors 14 and 16 are in this case copper strands, alternatively, for example, metal bands can be used.
  • first contact portions 22 and second contact portions 24 are arranged at regular intervals first contact portions 22 and second contact portions 24, in which the first electrical conductor 14 and the second electrical conductor 16 from one side of the feed belt 10 is accessible, i. from the side shown in Figure 10 in plan view.
  • the second contact sections 24 are each arranged in the middle between two first contact sections 22.
  • the distance between two adjacent first contact portions 22 is dependent on the type of planar heating element, for which the feed belt 10 is to be used. In a typical example of a feed belt 10, this distance is in the range of 10 cm, the length of the contact sections 22 and 24 being approximately 1 cm and the textile belt 12 being approximately 2 cm wide.
  • the contact portions 22 and 24 are formed by floating the electrical conductor 14 and 16, respectively.
  • the electrical conductor 14 or 16 passes through the fabric of the textile band 12 between two weft threads, the warp threads of the tubular portion 18 and 20 running around the electrical conductor 14 and 16, respectively.
  • the contact portions 22 and 24 can be formed without damage to the fabric, so that there is no risk that the woven tape 12 fray or tear.
  • the feed belt 10 can be used to supply a flat heating element with electrical energy, wherein the feed belt 10 is sewn perpendicular to the power supply lines of the heating element on this, so that the power supply lines are each in alternation with a first contact portion 22 and a second contact portion 24 in electrically conductive contact.
  • the sewing of the feed belt 10 with the heating element takes place along the edge regions 26 of the woven belt 12 and, if appropriate, along the middle region 28 between the two tubular regions 18 and 20.
  • a second exemplary embodiment of a feed belt according to the invention is shown in sections in FIG. 2 and designated there as a whole by 30.
  • the feed belt 30, like the first embodiment of FIG. 1, comprises a woven belt 12 and two electrical conductors 14 and 16 received in tubular regions 18 and 20, respectively, of the woven belt 12 with first contact sections 22 and second contact sections 24, respectively is about twice as wide as the feed belt 10 and additionally includes a third electrical conductor 32 and a fourth electrical conductor 34 received in tubular portions 36 and 38 of the woven belt 12, respectively.
  • third electrical conductor 32 are third contact portions 40 each at the level of the second contact portions 24, and along the fourth electrical conductor 34 are fourth contact portions 42 each arranged at the level of the first contact portions 22.
  • the feed belt 30 is thus mirror-symmetrical to a longitudinal center line 44.
  • the feed belt 30 is folded around an edge of the heating element running perpendicular to the power supply lines and sewn thereto. In this way, each power supply line between a first contact portion 22 and a fourth contact portion 42 and between a second contact portion 24 and a third contact portion 40 is fixed.
  • the first electrical conductor 14 and the fourth electrical conductor 34 are then connected to the positive pole of an electrical energy source and the second electrical conductor 16 and the third electrical conductor 32 to the negative pole (or vice versa).
  • FIG. 3 shows how a planar heating element 46 is positioned on the feed belt 30 (not yet folded).
  • the heating element 46 is a so-called surface heating and comprises a grid 48 made of glass fibers with a mesh size of about 5 mm, are incorporated in the at regular intervals of about 5 cm parallel power supply lines 50 in the form of copper wires or strands.
  • the power supply lines 50 divide the planar heating element 46 into a plurality of surface sections 52.
  • the fiberglass grid 48 including the power leads 50, is coated with an electrically conductive material.
  • this coating comprises a polyurethane binder with graphite particles dispersed therein, e.g. is described in EP 1 554 911 Bl. Due to this structure, the planar heating element 46 is very flexible and can e.g. When used in upholstery in upholstered furniture or motor vehicle sitting are adapted to the respective predetermined shape.
  • FIG. 4 shows a perspective view of a planar heating element 46 according to the invention, on which a feed belt 30 is arranged in the manner described above.
  • the grid 48 is not shown, but only the power supply lines 50 and the intermediate surface portions 52.
  • the folded feed strap 30 is secured by seams 54 on the heating element 46, the seams 54 in the longitudinal direction of the feed belt 30 adjacent or between the electrical conductors 14, 16, 32 and 34 run. The latter project at one end of the feed belt 30 out of this to allow connection to the electrical energy source.
  • the planar heating element 46 may also be used to heat floor or wall coverings by placing the heating element 46 in corresponding modular elements, e.g. square or rectangular plates, is embedded.
  • modular elements are made of a plastic material, e.g. expanded polypropylene (EPP), which completely surrounds the heating element 46 with the feed belt 30.
  • EPP expanded polypropylene
  • the modular elements are e.g. connectable via a tongue and groove system and thereby also allow a continuous electrical connection of the electrical conductors 14, 16, 32 and 34 in adjacent modular elements by means of electrical connection elements at the opposite ends of the feed belt 30.
  • thermoplastic or elastomeric plastic which is produced by means of an injection molding or extrusion process.
  • Flat heating elements according to the present invention can also be used in heatable containers.
  • An embodiment of such a heatable container 60 is shown in Figure 5 in a partially broken Illustration shown.
  • FIG. 6 shows the planar heating element 62, which is integrated in the container 60, in expanded form.
  • the container 60 is of parallelepiped construction with a rectangular bottom 64 and four pairs of parallel walls extending perpendicularly from the bottom 64, with two shorter walls 66 and two longer walls 68.
  • the bottom 64 and the walls 66 and 68 of the container 60 are made of a foamed or expanded plastics material such as e.g. EPP, in which the flat heating element 62 is completely embedded.
  • the heating element 62 is thereby as close as possible to the interior of the container 60 facing surfaces of the bottom 64 and the walls 66 and 68, so that the heat generated by the heating element 62 is discharged predominantly to the interior of the container 60 and the plastic material container 60th isolated to the outside.
  • the container 60 is particularly suitable for keeping food warm.
  • the heating element 62 which includes areas for the bottom 64 and for the walls 66 and 68 of the container 60, can be supplied with a single feed belt 70 with electrical energy.
  • the feed belt 70 is constructed substantially like the feed belt 10 of FIG. 1 and includes a woven belt 12 and a first electrical conductor 14 and a second electrical conductor 16 having contact portions 22 and 24, respectively.
  • the feed belt 70 is along the one for the shorter walls 66 and the bottom 64 certain areas of the heating element 62 arranged on this and sewn thereto, that the contact portions 22 and 24 with the power supply lines 50 of the heating element 62, which are perpendicular to the feed belt 70, in electrically conductive contact.
  • the heating element 62 can be easily adapted to the shape of the container 60.
  • the ends of the electrical conductors 14 and 16 are connected to electrical connection elements 72 and 74, respectively, which are arranged at the upper edge of one of the shorter walls 66.
  • the heating element 62 can be connected to an external power source (ie to the positive and negative poles) and thereby the interior of the container 60 can be heated.
  • an external power source ie to the positive and negative poles
  • Such a connection can be made for example via the socket in a motor vehicle, wherein the connecting elements 72 and 74 may also include a corresponding connection cable.
  • connection elements 72 and 74 at an upper edge of the wall 66 offers the particular advantage that an accumulator can be integrated into a lid for the container 60 (not shown in FIG. 5).
  • corresponding connection elements are arranged on the cover, which engage on closing the container 60 with the connection elements 72 and 74 and establish an electrical contact between the accumulator and the electrical conductors 14 and 16 in the feed belt 70.
  • the capacity of the accumulator should be designed so that the container 60 can be heated for several hours.
  • connection elements 74 and 74 are designed for connection of the accumulator and the further connection elements for connection to an external power source , When the lid is placed, the container 60 can then be heated at the same time and the accumulator charged.

Landscapes

  • Surface Heating Bodies (AREA)

Abstract

L'invention concerne une bande ou une baguette d'alimentation (10, 30, 70) servant à l'alimentation en énergie électrique d'un élément chauffant plat, offrant une possibilité d'applications simples, souples et multiples pour la connexion de l'élément chauffant à une source d'énergie électrique. A cet effet, l'invention est caractérisée en ce que la bande ou la baguette d'alimentation est formée essentiellement en un matériau électriquement isolant, et comprend au moins un premier et un second conducteurs électriques qui s'étendent, à distance entre eux, en direction longitudinale de la bande ou de la baguette, et qui sont entourés par le matériau isolant; en ce que dans des intervalles prédéterminés le long de la bande ou de la baguette, sont disposées une pluralité de premières et de secondes sections de contact (22, 24) dans lesquelles le premier ou le second conducteur électrique est accessible à partir d'un côté de la bande ou de la baguette; et en ce que les premières sections de contact sont décalées, en direction longitudinale, par rapport aux secondes sections de contact.
PCT/EP2010/058220 2009-06-12 2010-06-11 Bande ou baguette d'alimentation servant à l'alimentation en énergie électrique d'un élément chauffant plat WO2010142781A1 (fr)

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DE102009025454.4 2009-06-12
DE102009025454A DE102009025454A1 (de) 2009-06-12 2009-06-12 Einspeisband oder -leiste zur Versorgung eines flächigen Heizelements mit elektrischer Energie

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WO2010142781A1 true WO2010142781A1 (fr) 2010-12-16

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017216631A3 (fr) * 2016-06-14 2018-03-01 Laminaheat Holding Ltd. Produits à éléments chauffants à voile de carbone intégré

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE202015007476U1 (de) 2015-10-29 2017-01-31 Epsilon Bootes - Pi Entwicklung Von Trainingswissenschaftlichen Sportgeräten E.K. Das Bänder, Gurtbanden und Stoffe mit Litzen (Kabel) oder Glasfaser gewebt sind
WO2019086549A1 (fr) * 2017-10-31 2019-05-09 Laminaheat Holding Ltd. Ensembles de barres-bus à profil mince et systèmes de chauffage reliés électriquement à ceux-ci

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29509905U1 (de) * 1995-06-19 1995-11-30 Dietz Kabeltechnik Kabel mit Anschlüssen
DE19958363A1 (de) * 1999-12-03 2001-06-28 Wet Automotive Systems Ag Heizelement
WO2002047437A1 (fr) * 2000-12-09 2002-06-13 Seo Young Ho Dispositif chauffant de type matelas

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2003281961A1 (en) 2002-10-23 2004-05-25 Braincom Ag Panel heating system, method for producing the same, heatable object, seat occupancy recognition system, seat provided with the same and seat occupancy recognition method

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE29509905U1 (de) * 1995-06-19 1995-11-30 Dietz Kabeltechnik Kabel mit Anschlüssen
DE19958363A1 (de) * 1999-12-03 2001-06-28 Wet Automotive Systems Ag Heizelement
WO2002047437A1 (fr) * 2000-12-09 2002-06-13 Seo Young Ho Dispositif chauffant de type matelas

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2017216631A3 (fr) * 2016-06-14 2018-03-01 Laminaheat Holding Ltd. Produits à éléments chauffants à voile de carbone intégré
CN109479346A (zh) * 2016-06-14 2019-03-15 拉米纳热能控股有限公司 具有埋入式碳纱加热元件的产品

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