EP1865753B1 - Elément de chauffe d'appareil de cuisson et appareil de cuisson - Google Patents

Elément de chauffe d'appareil de cuisson et appareil de cuisson Download PDF

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Publication number
EP1865753B1
EP1865753B1 EP20070011298 EP07011298A EP1865753B1 EP 1865753 B1 EP1865753 B1 EP 1865753B1 EP 20070011298 EP20070011298 EP 20070011298 EP 07011298 A EP07011298 A EP 07011298A EP 1865753 B1 EP1865753 B1 EP 1865753B1
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EP
European Patent Office
Prior art keywords
heating element
cooking device
contact
plate
disk
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP20070011298
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German (de)
English (en)
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EP1865753A1 (fr
Inventor
Markus Lingenheil
Reinhard Wassmus
Pascal Gluck
Wilhelm Reimers
Moritz Meye
Fabrice Dr. Thiebaud
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.)
Rational AG
Rational Wittenheim SAS
Original Assignee
Rational AG
Frima SA
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Publication date
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Publication of EP1865753A1 publication Critical patent/EP1865753A1/fr
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Publication of EP1865753B1 publication Critical patent/EP1865753B1/fr
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Classifications

    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01R—ELECTRICALLY-CONDUCTIVE CONNECTIONS; STRUCTURAL ASSOCIATIONS OF A PLURALITY OF MUTUALLY-INSULATED ELECTRICAL CONNECTING ELEMENTS; COUPLING DEVICES; CURRENT COLLECTORS
    • H01R4/00—Electrically-conductive connections between two or more conductive members in direct contact, i.e. touching one another; Means for effecting or maintaining such contact; Electrically-conductive connections having two or more spaced connecting locations for conductors and using contact members penetrating insulation
    • H01R4/28—Clamped connections, spring connections
    • H01R4/30—Clamped connections, spring connections utilising a screw or nut clamping member
    • H01R4/34—Conductive members located under head of screw

Definitions

  • the invention relates to a cooking appliance heating element and a cooking appliance with it.
  • Heating elements for heating a rearview mirror in a motor vehicle are known.
  • a first aluminum sheet is fixed to the back of the mirror, are firmly welded to the two first screw-like fastening members.
  • On the aluminum sheet is also an insulating layer containing recesses for PTC resistors, which are pressed by a fastening device together with a second plate, which acts as a heating element on the aluminum sheet.
  • a contact member is pressed onto a contact surface of the heating element, wherein a first attachment member both the contact member and the contact surface passes through and is additionally electrically insulated by two insulating discs.
  • the heating element consists of a strip-shaped micro-plate, which is wrapped by heating wires. These wires are also electrically insulated by an upper and a lower strip-shaped microplate.
  • a threaded pin with a flat head is used for electrical contacting of the heating wires and for mechanical fixation of the heating plate.
  • the grub screw passes through the heating plate, wherein the head is arranged below the heating plate, so that in this way the heating plate is pressed in conjunction with a fastening device on the one hand to the upper micron layer and on the other hand, the heating wires in the region of a bore of the heating plate through the head of the grub screw be contacted electrically
  • the US 3,737,624 discloses a thin-film heating element.
  • a metallic thin-film resistor is used, which is connected via a disc-shaped electrode with a threaded bolt-like contact member, which also acts as a fastening member by this hin micsteckbar through the electrode surface and two asbestos layers, said layers, for example, by screwing a nut on the fastening member be compressed.
  • EP 0 902 602 A1 discloses a device for fixing conductors on a conductor track with resistance layers for a kettle or the like. Thereafter, a cable lug is placed on each resistive layer, which is covered with a silver layer, respectively on its one side with the resistive layer and on its opposite, other side with a bracket, which is designed for pressing the cable lugs in the direction of the conductor track, namely about a screw and a nut, in contact,
  • a ceramic carrier with a connecting device which has a threaded bolt with a base plate, which in turn can be firmly connected via an active solder layer and a contact layer with a pad.
  • the WO 05/009079 A1 an arrangement for electrically contacting a heating element in the form of a semiconductive carbon layer is described.
  • the WO 05/009079 A1 proposed to provide a grid-like network of metal rails and reinforcing rails formed thereon in the form of braided conductive wires on the carbon layer.
  • the carbon layer is coated in the region of the contact point with a nickel-containing compound.
  • the WO 02/32188 A2 discloses an electric heater having a thenmistor layer deposited on a non-conductive substrate, wherein electrodes for generating an electrical voltage are disposed in the thermistor layer on said thermistor layer. It is also proposed to electrically and mechanically connect an electrode to a cable lug by means of a conductive connecting member which extends in a cylinder-like manner through the substrate.
  • a heating device in which a conductive metal layer for generating heat, an insulating layer and a steel substrate are superimposed.
  • a heating layer is electrically contacted by a contact surface and a flat-fitting cable lug.
  • the DE 102 52 389 A1 discloses a heating element for placement on a pipe or a nozzle, wherein the heating element has contact surfaces which each cooperate with a contact piece of a conductor.
  • the contact pieces of the conductor have an insulating body and are pressed either with a clamping screw or with a spring clip on the contact surface.
  • a heating element for a cooking appliance in particular for the direct or indirect electrical heating of at least one item to be cooked, known, in which a spring-elastic locking element is used for electrical contacting.
  • a disadvantage of the prior art is that it may come despite the already made electrical insulation to a flashover and / or a short circuit, so that a heating element and thus a device operated therewith, in particular a crucible of a cooking appliance, damaged and / or can be put out of operation or it comes with the use of a plurality of such heating elements in a crucible for cooking food to a, due to the failure of a single heating element, non-uniform heating of the arranged in the crucible food. Also particularly problematic at high temperatures, such as 450 ° C, or strongly changing temperatures, as is often the case with cooking appliances, on a (thick-film) hotplate resulting B-fritting or fritting corrosion mentioned. Such corrosion is caused by translational movements in the micro range, which occurs especially in contact pairings with silvered contacts, which are pressed together by a spring plate. This results in a high contact wear and arcing.
  • the object of the invention is therefore to provide a cooking appliance heating element, which overcomes the disadvantages of the prior art.
  • a safe and reliable power transmission i. Contacting, at high temperatures, such as 450 ° C, or strongly changing temperatures, on a (thick-film) hot plate with a firmly connected, in particular screwed, contact place take place, while avoiding the B-Fritting- or Fritting corrosion.
  • the device should be compact and simple.
  • a cooking appliance heating element having at least one contact surface on which a contact member for electrical contacting is fastened via a fastening device, so that a first portion of the contact member is in electrical contact with the contact surface, while a second portion of the contact member with a Current and / or voltage source can be brought into operative connection
  • the fastening device is releasably connected to the cooking appliance heating element and a first attachment member extending away from the cooking appliance heating element at least partially through the contact surface and the contact member, and at least a second attachment member , which is connectable to the first fastening member to press the contact member on the contact surfaces, and an insulating disc is arranged between on one side of the contact surface and the contact member and on the other hand, the fastening members, that it avoids a direct electrical contact, such as in the form of a short circuit, and / or an indirect electrical contact, such as sparks, between on the one hand the contact surface and the contact member and on the other hand the fastening members.
  • the first fastening member at least partially has a thread on which the second fastening member can be screwed.
  • the first attachment member comprises a screw or a bolt, in particular in cooperation with at least one nut as the second attachment member.
  • the second attachment member is a clamping means and / or pressing means, in particular in the form of a nut, an annular metal disc and / or a plate spring, wherein preferably the metal disc on the insulating disc and / or the disc spring on the metal disc and / or the nut are arranged for pressing on the diaphragm spring.
  • the contact surface surrounds the first attachment member annularly, preferably concentrically.
  • the distance between the contact surface and the first attachment member is at least 3 mm.
  • the contact surface is formed by an area of silver or a silver alloy, in particular silver palladium, and / or stands out from the surface of the cooking appliance heating element, in particular emphasizes.
  • the first section of the contact element prefferably surround the first fastening element in an annular manner, preferably concentrically.
  • the first fastening member can be pushed through a hole of the cooking appliance heating element.
  • the insulating disc comprises an annular, first portion and a arranged at an inner edge of the first portion, edge-like, annular second portion, wherein the second portion of the first portion at least partially, preferably completely, in the direction protrudes the cooking appliance heating element.
  • the insulating disk of ceramic, mica, Kapton, Kerdi, Mika and / or a temperature-resistant plastic is formed.
  • At least one contact surface of the cooking appliance heating element with a contact member is releasably connectable.
  • preferred cooking appliance heating elements of the invention may be characterized by a first plate, in particular in the form of a first stainless steel plate, a dielectric layer made of one, in particular ceramic, dielectric, a resistance layer with a plurality of heating resistors, in particular in paths, preferably different widths, are arranged, and a glass layer.
  • a thermally and / or electrically insulating layer preferably in the form of a micro-plate, and / or a second plate or disc, in particular in the form of a second stainless steel plate, is or are arranged on the cooking appliance heating element , Preferably for forming a heating plate, in which between two stainless steel plates, the heating resistors are arranged.
  • the micro-plate, the glass layer and / or the second plate has or have a recess for the device for electrically contacting the contact surface.
  • the invention also proposes a cooking appliance with at least one cooking appliance heating element according to the invention, in which the cooking appliance comprises a crucible, a frying plate and / or a grill plate, preferably with a large number of cooking appliance heating elements on at least one crucible outer wall, in particular on the crucible bottom.
  • a thermally and / or electrically insulating layer preferably in the form of a micro-plate is placed, at least one attached to the crucible Fixing bolt is inserted through at least one hole or a recess in the cooking appliance heating element and in the insulating layer, and a, in particular further, clamping means and / or pressing means, in particular comprising a Jerusalemlegbare to the insulating layer plate or disc, in particular pressure plate, the insulating layer is pressed together with the cooking appliance heating element to a crucible outer wall or a crucible bottom.
  • the pressure disc comprises two concentric disc-shaped sections, wherein the inner portion has a central hole and the outer portion is offset parallel to the inner portion in the axial direction.
  • the invention further proposes that the first fastening member, in particular the screw, is inserted through a hole in the cooking appliance heating element, preferably in the layer arrangement comprising the first plate, the dielectric layer and the resistance layer, and the geometry of the Hole is adapted to the geometry of the first fastening member, in particular of the screw head of the screw, wherein it is preferably during and after tightening the screw only at a first portion of the edge of the hole at the height of the first plate to a support of the screw head, and a support of the screw head is avoided at a second portion of the border of the hole at the level of the dielectric layer.
  • the invention proposes that the hole and the screw head taper at least in sections conically in the direction of the contact member, wherein the angle which is enclosed by the conical surface of the hole and the central axis of the screw, is smaller than the angle, of the Cone surface of the screw head and the central axis of the screw is enclosed.
  • the invention is thus based on the surprising finding that by suitable selection of materials, geometries and constructive versions of a cooking appliance heating element of the Engewiderstand, that is, the resistance between a contact member and a contact surface, the reliability of the corresponding contact and dimensions can be optimized by an insulating means is interposed between on the one hand the contact surface and the contact member and on the other hand a Befest Trentseinrichmng for securing the contact member to the contact surface in the immediate vicinity of the contact surface and the contact member. In particular, no relative movements between the contact surface and the contact member and thus no wear generated by the fixed contact via the fastening device.
  • each device for contacting a contact surface of a heating element has a matched contact material pairing.
  • the specially adapted form of the electrical insulation means namely in the form of an insulating with two annular sections which extend perpendicular to each other, allow isolation to two mutually perpendicular surfaces, so that the fastening means in the form of a screw, which is longitudinal annular recesses may extend through the contact surface and the contact member, and a nut, which is festschraubbar on the screw as a clamping and pressing means for the connection between the contact surface and the contact member may be formed.
  • Fig. 1 2 shows a plan view of a cooking appliance heating element 10 according to the invention with two contact surfaces 20 to be contacted.
  • the cooking appliance heating element 10 in turn has a multiplicity of heating resistors 12 arranged in paths 14 of different widths and first holes 16 which are used to fasten the cooking appliance heating element.
  • Heating element 10 serve on a cooking appliance, not shown, in the form of a crucible on.
  • the cooking appliance heating element 10 has two second holes 18, each for receiving a bolt or a screw for fixing a contact member on one of the contact surfaces 20 are used.
  • the contact surfaces 20 are each formed as circular rings of silver or a silver alloy, which are arranged concentrically at a distance around the second holes 18 and are in electrical connection with the heating resistors 12 of the cooking appliance heating element 10.
  • the cooking appliance heating element 10 is constructed of a first steel plate, not shown, a dielectric layer, not shown, such as a ceramic dielectric, and a resistive layer, not shown, which includes the heating resistors 12. Further, a glass layer, not shown, is applied to the resistive layer, which protects the resistive layer from contact, steaming or the like. The glass layer is fixedly connected to the resistive layer for this purpose. Only in the area of the contact surfaces 20 does the cooking appliance heating element 10 have no glass layer in order to allow electrical contact with the contact surfaces 20.
  • Fig. 2 is an exploded view of a heating plate 22 with a device 24 for contacting the contact surface 20 of the heating plate 22 can be seen.
  • a mica or micro-plate 26 is arranged as a buffer layer, in particular to the cooking appliance heating element 10 on the one hand electrically and on the other to thermally isolate, so that the cooking appliance heating element 10 supplied heat energy only in one direction, im Case of use in a crucible, not shown, in the direction of the interior of the crucible, is directed or radiated, ie in Fig. 2 downward.
  • a second steel plate 28 is usually applied, which is used to interpose all layers of the heating plate 22, ie the cooking appliance heating element 10 with the first steel plate, the dielectric layer, the resistance layer and the glass layer and the micro-plate 26 the two steel plates 28 via corresponding fastening device, in particular in the form of passing through the first holes 16, not shown screws or rivets, together.
  • a cable lug 34 is pressed onto the contact surface 20, wherein between the cable lug 34 and the nut 32 an insulating disc 36, preferably from Kerdi or Mika, and an annular metal disc 38 are arranged. Between the metal disk 38 and the nut 32, a diaphragm spring, not shown, is arranged, which serves to maintain the voltage even with large temperature changes and / or when a setting behavior occurs. Since the screw 30 is electrically connected to the ground, electrical contact between the screw 30 and the cable lug 34 must be avoided.
  • the lug 34 ensures namely the energy supply to the heating resistors 12, so that on the one hand, a direct electrical contact of the cable lug 34 with the screw 30 via the nut 32 and the metal disc 38, which is provided for uniformly pressing the cable lug 34, and on the other an indirect electrical contact by sparks in air, which is located in a space between the cable lug 34 and the screw 30 can be excluded.
  • the insulating washer 36 is specially shaped, as will be described in more detail below.
  • Fig. 3 For example, the device 24 and the heating plate 22 are shown in a perspective view assembled together.
  • the layer structure of the heating plate 22 with the cooking appliance heating element 10, the micro-plate 26 and the second stainless steel plate 28 in the compressed state can be seen.
  • the second stainless steel plate 28 and the microplate 26 each have a recess 40, 42 for receiving the device 24 in order to make contact with the contact surface 20 of the cooking appliance heating element 10.
  • Fig. 4 in the form of a plan view of the heating plate 22 and the device 24, the rectangular shape of the recesses 40, 42 of the second stainless steel plate 28 and the micro-plate 26 can be better seen.
  • These recesses 40, 42 need not necessarily be angular, but may have any shape suitable for receiving the device
  • the Fig. 5 shows a sectional view along the sectional plane AA of Fig. 4 the device 24 and the heating plate 22 with the layer structure already described above.
  • the Fig. 6 that the cut B of the Fig. 5
  • the insulating disk 36th comprising an annular first portion 46 and an annular second portion 48 which protrudes from an inner edge of the first portion 46 of the insulating disk 36 in the direction of the contact surface 20 and the heating element 10, to the screw 30 and the nut 32 substantially completely electrically shield against the annular portion 44 of the cable lug 34. Consequently, the risk of electrical contact, for example by flashover in the space between the cable lug 34, in particular the annular portion 44 thereof, and the grounded by the contact with the first steel plate screw 30
  • the annular metal disc 36 is arranged for uniform pressing of the insulating disc lug assembly to the heating plate 22, wherein the pressing force by the diaphragm spring, not shown, and the nut 32 on a thread of the screw 30th is exercised.
  • the same can be connected via a cable, not shown, with an electrical power and / or voltage source, not shown, so that the heating resistors 12 can be energized.
  • FIG. 7 is a sectional view of the device 24 and the heating plate 22 along the cutting plane CC according to the Fig. 4
  • Fig. 8 is again an enlarged view of the Fig. 7 to see, which corresponds to the section D.
  • the FIGS. 7 and 8 the same construction as the one FIGS. 5 and 6 but from a different angle, so also the insulating disk 36 with its annular portions 46 and 48, of which the second extends from the inner edge of the first in the direction of the Garello heating element 10 and the contact surface 20.
  • FIGS. 7 and 8 the same construction as the one FIGS. 5 and 6 but from a different angle, so also the insulating disk 36 with its annular portions 46 and 48, of which the second extends from the inner edge of the first in the direction of the Garello heating element 10 and the contact surface 20.
  • FIG. 9 Another embodiment of the invention is Fig. 9 shown.
  • the cooking appliance heating element 10 comprises a layer arrangement of a first plate, not shown, in particular a stainless steel plate, a dielectric layer, not shown, in particular of a ceramic dielectric, and a resistance layer, not shown.
  • the glass layer, not shown, has a recess for the contact member (34).
  • the first plate limits the layer arrangement to the outside, while the resistance layer is contacted via the contact surface 20 with a portion 44 of the contact member 34.
  • the dielectric layer is in this case surrounded by the two aforementioned layers.
  • the screw head of the screw 30 exerts a force on the layer arrangement in the region of the hole 18 '.
  • the geometry of the hole 18 ' is adapted to the geometry of the screw head so that it only has a first portion 60 in the tightened state the periphery of the hole 18 'is located at the level of the first plate.
  • a second portion 62 of the periphery of the hole 18', which is at the level of the dielectric layer, is not in direct contact with the screw head in this case.
  • the hole 18 ' is made conical, wherein the hole circumference at the level of the first portion 60 substantially corresponds to the outer head circumference of the screw 30, but at the height of the second portion 62 is greater than the local head circumference of the screw 30.
  • the angle subtended by the cone surface of the hole 18 'and the central axis of the screw 30 is smaller than the angle enclosed by the cone surface of the screw head and the central axis of the screw 30.
  • the insulating layer, in particular the micro-plate 26, to the cooking appliance heating element 10 can be realized.
  • the microplate 26 is placed on the cooking appliance heating element 10 and then together with the cooking appliance heating element 10, for example by means of at least one screw, with the crucible only when mounting the cooking appliance heating element 10 on a crucible outer wall or on a crucible bottom connected.
  • the micro-plate may have a recess for the electrical contact arrangement.
  • the screw extends through a designated hole 16 in each of the cooking appliance heating element 10 and the micro-plate 26.
  • a specially shaped pressure plate 70 is laid, as exemplified in 10 and 11 is shown.
  • a top view of the pressure plate 70 is shown.
  • Fig. 11 a sectional view through the sectional plane EE in Fig. 10 shown.
  • the pressure washer 70 acts like a cup spring and includes two concentric disc-shaped sections, the inner section 74 having a central hole 72 and the outer section 76 being axially offset parallel to the inner section 74.

Landscapes

  • Baking, Grill, Roasting (AREA)
  • Resistance Heating (AREA)

Claims (20)

  1. Elément de chauffage (10) des appareils de cuisson, avec au moins une surface de contact (20), au niveau de laquelle un élément formant contact (34) peut être fixé par l'intermédiaire d'un dispositif de fixation (30, 32, 38) en vue d'une mise en contact électrique, de sorte qu'une première section (44) de l'élément formant contact (34) est en contact électrique avec la surface de contact (20), tandis qu'une seconde section (50) de l'élément formant contact (34) peut être placée en liaison fonctionnelle avec une source de courant et/ou de tension, le dispositif de fixation (30, 32, 38) étant relié de manière amovible avec l'élément de chauffage (10) des appareils de cuisson et présentant un premier élément de fixation (30), qui s'étend, à partir de l'élément de chauffage (10) des appareils de cuisson, au moins localement à travers la surface de contact (20) ainsi qu'à travers l'élément formant contact (34), et présentant au moins un second élément de fixation (32, 38), qui peut être relié avec le premier élément de fixation (30), afin de presser l'élément formant contact (34) sur les surfaces de contact (20), et une rondelle isolante (36) étant agencée entre d'une part la surface de contact (20) et l'élément formant contact (34) et d'autre part les éléments de fixation (30, 32, 38), de sorte qu'un contact électrique direct, comme sous la forme d'un court-circuit, et/ou un contact électrique indirect, comme par des étincelles, est évité entre d'une part la surface de contact (20) et l'élément formant contact (34) et d'autre part les éléments de fixation (30, 32, 38).
  2. Elément de chauffage des appareils de cuisson selon la revendication 1, caractérisé en ce que
    le premier élément de fixation (30) présente au moins par section un filetage sur lequel le second élément de fixation (32) peut être vissé.
  3. Elément de chauffage des appareils de cuisson selon la revendication 1 ou 2, caractérisé en ce que
    le premier élément de fixation comprend une vis (30) ou un boulon, en particulier en coopération avec au moins un écrou (32) en tant que second élément de fixation.
  4. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que le second élément de fixation (32, 38) constitue un moyen de serrage et/ou un moyen de pression, en particulier sous la forme d'un écrou (32), d'une rondelle métallique (38) de forme annulaire et/ou d'un ressort à disque, la rondelle métallique (38) étant de préférence agencée sur la rondelle isolante (36), et/ou le ressort à disque étant agencé sur la rondelle métallique (38) et/ou l'écrou (32) étant agencé sur le ressort à disque afin de presser.
  5. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface de contact (20) entoure le premier élément de fixation (30) de manière annulaire, de préférence concentrique.
  6. Elément de chauffage des appareils de cuisson selon la revendication 5, caractérisé en ce que
    l'écart entre la surface de contact (20) et le premier élément de fixation (30) est au moins 3 mm.
  7. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface de contact (20) est formée d'une surface d'argent ou d'un alliage d'argent, en particulier d'argent-palladium, et/ou constitue un relief, en particulier s'élève au-dessus, de la surface de l'élément de chauffage (10) des appareils de cuisson.
  8. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que la première section (44) de l'élément formant contact (34) entoure le premier élément de fixation (30) de manière annulaire, de préférence concentrique.
  9. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que le premier élément de fixation (30) peut être traversé par un trou (18) de l'élément de chauffage (10) des appareils de cuisson.
  10. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que la rondelle isolante (36) comprend une première section (46) annulaire et une seconde section (48) annulaire, à bords, agencée au niveau d'une arête intérieure de la première section (46), la seconde section (48) faisant saillie de la première section (46) au moins par section, de préférence complètement, en direction de l'élément de chauffage des appareils de cuisson.
  11. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que la rondelle isolante (36) est formée de céramique, de mica, de Kapton®, de Kerdi® et/ou d'une matière plastique résistante à la température.
  12. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que la surface de contact (20) peut être reliée de manière amovible à un élément formant contact (34).
  13. Elément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé par une première plaque, en particulier sous la forme d'une première plaque d'acier inoxydable, une couche diélectrique constituée d'un diélectrique, en particulier en céramique, une couche de résistance avec une pluralité de résistances chauffantes (12), qui sont en particulier agencées en bandes (14), de préférence de différentes largeurs, et une couche de verre.
  14. Elément de chauffage des appareils de cuisson selon la revendication 13, caractérisé en ce que
    une couche thermiquement et/ou électriquement isolante, de préférence sous la forme d'une plaque de mica (26), et/ou une seconde plaque ou rondelle, en particulier sous la forme d'une seconde plaque d'acier inoxydable (28), est/sont agencée(s) sur l'élément de chauffage (10) des appareils de cuisson, de préférence pour former une plaque chauffante (22), dans laquelle les résistances chauffantes (12) sont agencées entre deux plaques d'acier inoxydable (28).
  15. Elément de chauffage des appareils de cuisson selon la revendication 14, caractérisé en ce que
    la plaque de mica (26), la couche de verre et/ou la seconde plaque (28) présente/présentent un évidement (40, 42) pour le dispositif (24) en vue de la mise en contact électrique de la surface de contact (20).
  16. Appareil de cuisson avec au moins un élément de chauffage des appareils de cuisson selon l'une quelconque des revendications précédentes, caractérisé en ce que
    l'appareil de cuisson comprend une casserole, une plaque à rôtir et/ou une plaque à griller, de préférence avec une pluralité d'éléments de chauffage (10) des appareils de cuisson au niveau d'au moins une paroi extérieure de casserole, en particulier au niveau d'un fond de casserole.
  17. Appareil de cuisson selon la revendication 16, caractérisé en ce que une couche thermiquement et/ou électriquement isolante, de préférence sous la forme d'une plaque de mica (26), est placée au niveau d'une casserole sur l'élément de chauffage (10) des appareils de cuisson, à des fins de fixation de chaque élément de chauffage (10) des appareils de cuisson,
    au moins un boulon de fixation fixé au niveau de la casserole est passé à travers au moins un trou (16) ou un évidement dans l'élément de chauffage (10) des appareils de cuisson et dans la couche isolante, et
    la couche isolante est pressée au niveau d'une paroi extérieure de casserole ou d'un fond de casserole, en commun avec l'élément de chauffage (10) des appareils de cuisson, par l'intermédiaire d'un, en particulier un autre, moyen de serrage et/ou moyen de pression, en particulier comprenant une plaque ou une rondelle pouvant être placée sur la couche isolante, en particulier une rondelle de pression (70).
  18. Appareil de cuisson selon la revendication 17, caractérisé en ce que la rondelle de pression (70) comprend deux sections discoïdales concentriques, la section intérieure (74) possédant un trou central (72) et la section extérieure (76) étant décalée dans une direction axiale parallèlement à la section intérieure (74).
  19. Appareil de cuisson selon la revendication 17 ou 18, caractérisé en ce que
    le premier élément de fixation, en particulier la vis (30), est passé à travers un trou (18') dans l'élément de chauffage (10) des appareils de cuisson, de préférence dans l'agencement de couches comprenant la première plaque, la couche diélectrique et la couche de résistance, et
    la géométrie du trou (18') est adaptée à la géométrie du premier élément de fixation, en particulier de la tête de vis de la vis (30), un appui de la tête de vis ne se produisant, de préférence pendant et après le serrage de la vis (30), qu'au niveau d'une première section (60) de la bordure du trou (18') à hauteur de la première plaque, et un appui de la tête de vis au niveau d'une seconde section (62) de la bordure du trou (18') à hauteur de la couche diélectrique étant évité.
  20. Appareil de cuisson selon la revendication 19, caractérisé en ce que le trou (18') et la tête de vis convergent de manière conique au moins par section en direction de l'élément formant contact (34, 44), l'angle inclus dans la surface de cône du trou (18') et l'axe central de la vis (30) étant inférieur à l'angle inclus dans la surface conique de la tête de vis et l'axe central de la vis (30).
EP20070011298 2006-06-09 2007-06-08 Elément de chauffe d'appareil de cuisson et appareil de cuisson Active EP1865753B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200620009227 DE202006009227U1 (de) 2006-06-09 2006-06-09 Vorrichtung zum elektrischen Kontaktieren einer Kontaktfläche eines Heizelements, Heizelement mit solch einer Vorrichtung und Gargerät mit solch einem Heizelement

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EP1865753A1 EP1865753A1 (fr) 2007-12-12
EP1865753B1 true EP1865753B1 (fr) 2010-10-06

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FR3054403B1 (fr) * 2016-07-22 2019-10-18 Saint-Gobain Glass France Vitrage avec element electriquement conducteur et sa connexion electrique
ES2682522B1 (es) * 2017-03-20 2019-07-29 Bsh Electrodomesticos Espana Sa Dispositivo de aparato domestico
CN111370610B (zh) * 2020-03-17 2022-03-18 浙江零跑科技股份有限公司 一种方形电池固定结构及其使用方法

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FR1064751A (fr) * 1951-08-25 1954-05-18 Electrofilm Perfectionnements relatifs aux éléments chauffants
US3737624A (en) * 1970-09-16 1973-06-05 Progressive Products Co Electric grill with a thin-film heating element
US3808573A (en) * 1973-01-16 1974-04-30 Emerson Electric Co Electric heater assemblies
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DE3147494A1 (de) * 1981-12-01 1983-06-16 Bernd Dipl.-Ing. Schädler (FH), 6721 Westheim Elektrisch beheizbarer spiegel
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DE202006009227U1 (de) 2007-10-11
EP1865753A1 (fr) 2007-12-12
DE502007005247D1 (de) 2010-11-18

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