EP0572340A1 - Biegsamer Flachheizkörper mit eingebautem elektrischem Anschluss - Google Patents

Biegsamer Flachheizkörper mit eingebautem elektrischem Anschluss Download PDF

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Publication number
EP0572340A1
EP0572340A1 EP93420213A EP93420213A EP0572340A1 EP 0572340 A1 EP0572340 A1 EP 0572340A1 EP 93420213 A EP93420213 A EP 93420213A EP 93420213 A EP93420213 A EP 93420213A EP 0572340 A1 EP0572340 A1 EP 0572340A1
Authority
EP
European Patent Office
Prior art keywords
heating element
connection
strands
element according
tongue
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.)
Withdrawn
Application number
EP93420213A
Other languages
English (en)
French (fr)
Inventor
Dominique Gelus
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.)
SEB SA
Original Assignee
SEB SA
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 SEB SA filed Critical SEB SA
Publication of EP0572340A1 publication Critical patent/EP0572340A1/de
Withdrawn legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D06—TREATMENT OF TEXTILES OR THE LIKE; LAUNDERING; FLEXIBLE MATERIALS NOT OTHERWISE PROVIDED FOR
    • D06F—LAUNDERING, DRYING, IRONING, PRESSING OR FOLDING TEXTILE ARTICLES
    • D06F75/00—Hand irons
    • D06F75/08—Hand irons internally heated by electricity
    • D06F75/24—Arrangements of the heating means within the iron; Arrangements for distributing, conducting or storing the heat
    • 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
    • H05B3/02—Details
    • H05B3/06—Heater elements structurally combined with coupling elements or holders
    • 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
    • H05B3/28—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material
    • H05B3/30—Heating elements having extended surface area substantially in a two-dimensional plane, e.g. plate-heater non-flexible heating conductor embedded in insulating material on or between metallic plates
    • 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
    • H05B2203/003—Heaters using a particular layout for the resistive material or resistive elements using serpentine layout

Definitions

  • the present invention relates to the general technical field of flexible heating elements comprising a heating circuit and a means of electrical connection to an external energy source.
  • the present invention relates to a flexible heating element, preferably flat, comprising at least one resistive wire defining a heating circuit inserted between two electrical insulating films.
  • Such a heating element can obviously be used in all fields of application requiring the heating of mechanical parts, for example, or of liquid, or even of fluid, and the heating element according to the invention is not limited to a specific area of application.
  • the heating element according to the invention is more particularly intended to be integrated into a household appliance, and the invention relates, for this purpose, to any household appliance comprising a heating element according to the invention, and more particularly cooking appliances such as kettles, and irons, especially steam irons.
  • the resistive element obtained for example, by etching an appropriate conductive metal.
  • the resistive element produced for example from a copper, tin or aluminum alloy is inserted, for example by a heat treatment under pressure, between two sheets of an electrical insulating material.
  • the latter may be polyester, silicone glass, or even micanite.
  • the heating element thus produced has a certain flexibility, is generally substantially flat and may have all possible geometric shapes, circular, rectangular depending on the use and the desired location.
  • such heating elements are integrated into a structure or an apparatus in order to supply thermal energy and are provided for this purpose with means for connection to a power source.
  • connection between the connection wires and the bars of the circuit is carried out by soldering, preferably with tin, the wire on the resistive circuit.
  • soldering preferably with tin
  • heating elements in the form of a metal sheet electrically insulated by thin layers.
  • the connection (s) of the heating elements to a unit electrical is done in a conventional manner with all the disadvantages of using elements consisting only of extensions of the heating element.
  • the object of the invention therefore aims to remedy the various drawbacks mentioned above and to provide a flexible heating element allowing the elimination of any additional electrical connection added to the heating element in order to facilitate the mounting of said elements.
  • Another object of the invention is to provide a flexible heating element to which different electrical units can be connected without the connection operation itself being made more complex.
  • An additional object of the invention aims to provide a flexible heating element whose connection means have good moisture resistance so that it can be integrated into appliances, in particular household appliances, intended to operate in conditions of high relative humidity. .
  • a flexible heating element comprising at least one resistive wire defining a circuit with at least one strand input and one output strand, said wire being inserted between two films of electrical insulator and being connected to at least one outdoor electrical unit by connection means characterized in that the connection means consist at least of a tab flexible connection forming an extension of the heating element, and comprising inserted between the two insulating films, at least two connection strands drawn from the circuit, connected to the electrical unit and having a resistance adapted to their connection function.
  • the heating element 1 is made in a known manner of a resistive wire 2, made of any suitable material, of the copper, aluminum, brass or other type, inserted between two sheets. insulators 3, 3 ′ (FIGS. 1 and 5) adhering to one another as well as to the wire 2 and the composition of which is chosen according to the desired application, from materials of the PVC, polyester, polyimide type, silicone, etc ... The thicknesses involved are minimal, the heating element is flexible and generally extends in a single plane of extension, so that it can be considered to be flat.
  • the heating element 1 obviously has a shape adapted to its location and the resistive wire 2 defines a circuit also adapted to the heat dissipation flux which it must provide.
  • the heating element 1 to which reference will be made has a geometric point shape characteristic of the heating elements intended to be mounted in an iron soleplate. It is obvious that the geometric shape to which reference will be made is not limiting and that those skilled in the art can easily modify it to make it circular or rectangular, for example, in order to integrate the heating element into another electrical appliance of the household appliance type such as a cooking appliance.
  • the heating element 1 such as that shown in FIG. 1, comprises a resistive wire 2 delimiting, from an input strand 4 and an output strand 5, a resistive circuit 6.
  • the resistive circuit 6 obtained for example by chemical cutting or screen printing advantageously has a series of loops forming a circuit in serpentine.
  • the resistive wire 2 is intended to be connected, when the heating element is for example implanted in an iron soleplate, to an external electrical unit constituted in this case by a supply unit such as the sector.
  • the connection is obviously made via a power cable intended to be connected to the mains.
  • the heating element 1 comprises as connection means a connection tab 10 forming an extension of the very structure of the heating element 1.
  • connection tab 10 extends, in the example shown at Figure 1, outside the main geometric envelope defining the heating element 1 and from the periphery of said envelope.
  • the tongue 1 extends from the periphery 11 formed by the rear edge of the heating element 1 thus constituting the attachment edge.
  • connection tongue 10 thus forms an external tongue, of variable length, depending on the distance of the necessary connections, and for example of square or rectangular shape.
  • the connection tab 10 is externally limited by two portions of insulating film 3, 3 ′ and comprises inserted between these two films the two input strands 4 and output 5 respectively of the resistive circuit 6.
  • connection strands input 4 and output 5 constitute the main connection strands of the circuit 6 and are intended to be connected to an electrical unit, in this case supply.
  • connection strands 4, 5 have a resistivity adapted to their connection function, obtained for example by widening their track relative to the average width of the tracks of the rest of the circuit 6.
  • the connection tab 10 has the same structure internal than that of the rest of the heating element and consequently has the flexibility necessary to be able to be mobile and folded out and from the main extension plane of the heating element 1. It can thus be connected directly to the electrical unit appropriate, by simple raising from its fold zone opposite the rear edge 11, then by multidirectional deformation according to the desired direction for connection.
  • connection means which in this case consist of an internal connection tab 15.
  • connection tongue 15 is therefore formed by a re-entrant cutout made from the periphery of the geometric envelope forming the heating element 1 and preferably from the rear edge 11b.
  • the internal tongue 15 has a structure equivalent to that of the assembly of the heating element and is provided with connecting strands 4 ′ and 5 ′ which end in said tongue.
  • the heating element according to the invention may comprise, in addition to a connection tab 17 intended to be connected to the mains, at least one other pair of connection strands forming strands of secondary connections 18 integrated into the resistive circuit 6 and drawn from the latter.
  • the secondary connection strands 18 can be inserted into connection tabs similar to the external 10 or internal 15 tabs, such as those shown in FIGS. 1 and 2.
  • the secondary connection strands 18 are inserted into an internal tab 19 obtained by partial cutting of the insulating films 3, 3 ′ around the secondary connection strands 18.
  • the cutting line 20 remotely surrounds the secondary connection strands 18 with the exception an attachment edge opposite the end of the strands 18 and forming a connection zone with the rest of the heating element.
  • the cutout can be formed by three lines 20a, 20b, 20c, complete or consist of simple precut incisions along the same lines allowing to initiate at the time of assembly and connection the clearance and in particular the raising of the tongue 19 along of the cutting line 20 previously cut.
  • the line 20b which delimits the edge substantially perpendicular to the longitudinal axis of the secondary strands 18, extends at a distance from the periphery 11c of the heating element 1.
  • the tongue 20 is therefore completely included in the heating element 1.
  • the resistive circuit 6 can comprise several pairs or series of secondary connection strands 18, and consequently several series of internal or external connection tabs distributed along said circuit.
  • the connection tabs of the internal or external type are intended to be connected by the strands 18 which they comprise to various electrical units linked to the electrical appliance in which the heating element 1 is installed. These electrical units can for example be pilot lights, thermostats, electronic control boards, etc.
  • connection tabs 10, 15, 17 be provided with sealing means.
  • household appliances of the type mentioned above are capable of operating in the presence of steam or moisture which must not be capable of coming into contact with the connection strands 4, 5 or 18.
  • sealing means along the periphery of the tongues 10, 15, 17, 20. They can consist of the simple addition, by gluing for example, of a ribbon 25 (FIG. 1) fixed astride the two insulating films 3, 3 'and extending at least on the terminal edge 26 of the tongue 10.
  • the tape 25 can be chosen from any material having good moisture insulation properties.
  • the sealing means may also consist, as shown in FIG. 4, of a lowering of the lower insulating film 3 'on the other insulating film 3.
  • the superposition of the films 3 and 3' extends over a length sufficient to close the front end edge 27 of the tongue 10.
  • the upper insulating film 3 may be longer than the lower insulating film 3 'and folded over the latter.
  • the connecting strands 4 and 5 which terminate at the front end edge 27 are protected against any penetration of moisture.
  • Figures 5 and 6 show an iron soleplate having a lower metal ironing plate 30 forming the heat emitting plate, on which is fixed an upper retaining plate 31.
  • the heating element 1 according to the invention is maintained in place by compression and by bonding between the plates 30 and 31.
  • the retaining plate 31 is provided with a series of notches 32 formed opposite the connection tabs 10, 15, 17, so as to form windows for the passage of the latter.
  • the electric units of the iron which must be connected to the resistive circuit 6 being located at a level higher than that of the plate 31, it is thus possible to raise by folding the connection tabs 10, 15, 17 through the notches 32.
  • the notch 32 is arranged to authorize the lifting of a connection tab 19 ensuring the connection of the secondary connection strands 18 to the borders of a thermostat 35.
  • the set of rear connectors 36 (FIGS. 5 and 6) has an internal tab 15 adhering by its upper face formed by the insulating film 3 on a tab movable 37 coming from the partial or total cutting of a notch 32.
  • the movable tab 37 consists of a piece cut in the retaining plate 31 so as to be connected to the latter by one and preferably two arms of link 38 deformable.
  • the movable leg 37 has a shape comparable to an H, defining from the link arms 38, two external legs 39.
  • the resistive circuit 6 can be completely or partially surrounded by an inert resistive track 40, as shown in FIG.
  • the inert resistive track 40 can also completely surround the resistive circuit 6 and come to extend parallel and at the distance from the edge 26 of the tongue 10, 15 or 20.
  • the lateral strands 40a are arranged in the connecting tongue 10 , 15, 20 so that the legs 39 of the movable leg 37 cover said strands 40a in full.
  • each insulating film 3, 3 ′ comprising a layer of adhesive on its two opposite faces the production of the heating structure can take place by pressing, directly in place between the two plates 30, 31.
  • the gluing operation is simplified and the sealing of the heating element is particularly improved at the connection strands 4, 5.
  • the presence of the movable tab 37 allows gluing over the entire surface of the film 3 of the heating element, which represents a significant simplification of the sizing process itself on the one hand, and allows during the application of the holding plate 31 pressing and bonding the connecting tab 15 against the central surface and the legs 39 of said plate.
  • the outer face of the tongue 10, 15, 19, formed by a portion of the film 3 ' is not glued or is provided with a film additional preventing its adhesion to the plate 30.
  • the overall tightness of the tongue 15 is thus ensured, on the one hand by the compression of the strands 40a by the legs 39, and on the other hand by the compression of the insulating films 3, 3 'one against the other, against the connecting strands 4, 5.
  • the movable tab 37 can be raised from its initial plane of extension P parallel to the plane of extension of the sole to come, for example, to occupy a connection position in which the extension plane P 'extends substantially perpendicular to said plane P.
  • the tongue 15 can therefore be raised to occupy any intermediate position such as P'1 or P'2, from a rotation of the movable plate 37 around of a fictitious axis passing through the two link arms 38 and extending in the plane P. 11 it should be noted that due to the rigidity of the plate 31 the chosen spatial position of the tongue 15 is stable.
  • connection strands thus inserted between the two sheets of insulating material 3, 3 ′ is not limited and as shown in FIG. 3 for example, three connection strands 41, 42, 43 can extend in tab 17.
  • connection strands 4, 5, 18 or 41, 42, 43 and the terminals of the electrical units can be carried out in different ways.
  • additional fixing means such as staples 45 (FIG. 3) fixed directly through each connection strand 41, 42 or 43.
  • the staples 45 also pass, through their fixing pads, the thickness of the insulating films 3, 3 '.
  • the electrical assembly comprising the heating element according to the invention therefore no longer comprises wires, cables or connection bars connecting the heating structure with the various electrical units of the device.
  • the flexible connection tongues freely extending the heating structure and the resistive circuit in the form of dab, it is possible to fold said tongue to conform it in space and put it in relation with the connection terminal, in it thus performing a function equivalent to that of a connecting wire.
  • the montaye proper is also greatly simplified.
  • a sealing means such as a movable tab 37, not only makes it possible to maintain the mobility necessary for the tongue. connection 15, but also to preserve the tightness of the connection strands.

Landscapes

  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Resistance Heating (AREA)
  • Surface Heating Bodies (AREA)
EP93420213A 1992-05-27 1993-05-27 Biegsamer Flachheizkörper mit eingebautem elektrischem Anschluss Withdrawn EP0572340A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9206679 1992-05-27
FR9206679A FR2691869B1 (fr) 1992-05-27 1992-05-27 Element chauffant plat et souple a connectique integree.

Publications (1)

Publication Number Publication Date
EP0572340A1 true EP0572340A1 (de) 1993-12-01

Family

ID=9430365

Family Applications (1)

Application Number Title Priority Date Filing Date
EP93420213A Withdrawn EP0572340A1 (de) 1992-05-27 1993-05-27 Biegsamer Flachheizkörper mit eingebautem elektrischem Anschluss

Country Status (2)

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EP (1) EP0572340A1 (de)
FR (1) FR2691869B1 (de)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004622A1 (en) * 1995-07-17 1997-02-06 White Consolidated Industries, Inc. Capacitive leakage current cancellation for heating panel
WO2012019855A1 (fr) * 2010-08-11 2012-02-16 Valeo Systemes Thermiques Module chauffant comprenant un element chauffant serigraphie
CN108353467A (zh) * 2015-11-09 2018-07-31 韦巴斯托股份公司 用于车辆的加热装置的设备
US11292085B2 (en) 2014-11-07 2022-04-05 Webasto SE Method for working a first component and a second component by laser welding and corresponding device

Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615064A1 (de) * 1976-04-07 1977-10-20 Husqvarna Ab Kochpfanne mit elektronisch gesteuerter temperaturregelung und ein verfahren zur herstellung derselben
US4139763A (en) * 1978-03-10 1979-02-13 Mcmullan James P Blanket heater with temperature control means
GB1545770A (en) * 1976-11-30 1979-05-16 Smiths Industries Ltd Mirror assemblies
EP0127226A2 (de) * 1983-05-31 1984-12-05 Société Anonyme Compagnie Générale Belge des Isolants (COGEBI) Verfahren zur Herstellung von elektrischen Widerständen und Heizapparaten
CA1207365A (en) * 1983-06-02 1986-07-08 Ohmtek Products Ltd. Waterbed heater
EP0334824A2 (de) * 1988-03-25 1989-09-27 Calesco Foil AB Flacher elektrischer Heizwiderstand
EP0380896A1 (de) * 1989-01-04 1990-08-08 Seb S.A. Bügeleisensohle, hergestellt aus aneinander hartgelöteten Metallblechen

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2615064A1 (de) * 1976-04-07 1977-10-20 Husqvarna Ab Kochpfanne mit elektronisch gesteuerter temperaturregelung und ein verfahren zur herstellung derselben
GB1545770A (en) * 1976-11-30 1979-05-16 Smiths Industries Ltd Mirror assemblies
US4139763A (en) * 1978-03-10 1979-02-13 Mcmullan James P Blanket heater with temperature control means
EP0127226A2 (de) * 1983-05-31 1984-12-05 Société Anonyme Compagnie Générale Belge des Isolants (COGEBI) Verfahren zur Herstellung von elektrischen Widerständen und Heizapparaten
CA1207365A (en) * 1983-06-02 1986-07-08 Ohmtek Products Ltd. Waterbed heater
EP0334824A2 (de) * 1988-03-25 1989-09-27 Calesco Foil AB Flacher elektrischer Heizwiderstand
EP0380896A1 (de) * 1989-01-04 1990-08-08 Seb S.A. Bügeleisensohle, hergestellt aus aneinander hartgelöteten Metallblechen

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1997004622A1 (en) * 1995-07-17 1997-02-06 White Consolidated Industries, Inc. Capacitive leakage current cancellation for heating panel
WO2012019855A1 (fr) * 2010-08-11 2012-02-16 Valeo Systemes Thermiques Module chauffant comprenant un element chauffant serigraphie
FR2963867A1 (fr) * 2010-08-11 2012-02-17 Valeo Systemes Thermiques Module chauffant comprenant un element chauffant serigraphie
US11292085B2 (en) 2014-11-07 2022-04-05 Webasto SE Method for working a first component and a second component by laser welding and corresponding device
CN108353467A (zh) * 2015-11-09 2018-07-31 韦巴斯托股份公司 用于车辆的加热装置的设备
US10897794B2 (en) 2015-11-09 2021-01-19 Webasto SE Apparatus for a heating device for a vehicle
CN108353467B (zh) * 2015-11-09 2022-06-28 韦巴斯托股份公司 用于车辆的加热装置的设备

Also Published As

Publication number Publication date
FR2691869B1 (fr) 1996-08-02
FR2691869A1 (fr) 1993-12-03

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