EP2923153B1 - Kochfeld mit fenster und endplatte, garvorrichtung und verfahren zur herstellung des kochfeldes - Google Patents

Kochfeld mit fenster und endplatte, garvorrichtung und verfahren zur herstellung des kochfeldes Download PDF

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Publication number
EP2923153B1
EP2923153B1 EP13808103.9A EP13808103A EP2923153B1 EP 2923153 B1 EP2923153 B1 EP 2923153B1 EP 13808103 A EP13808103 A EP 13808103A EP 2923153 B1 EP2923153 B1 EP 2923153B1
Authority
EP
European Patent Office
Prior art keywords
window
base plate
seal
cooktop
edge
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
EP13808103.9A
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English (en)
French (fr)
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EP2923153A1 (de
Inventor
Adèle VERRAT-DEBAILLEUL
Gérard Huchet
Béatrice MOTTELET
Gaëlle FERRIZ
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.)
Eurokera SNC
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Eurokera SNC
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Publication date
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Publication of EP2923153A1 publication Critical patent/EP2923153A1/de
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Publication of EP2923153B1 publication Critical patent/EP2923153B1/de
Active legal-status Critical Current
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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/688—Fabrication of the 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
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits

Definitions

  • the present invention relates to a cooking appliance with a cooking plate and in particular a fixed cooking appliance intended to be integrated in an opening arranged in a worktop or in a cooking stove or a mobile cooking appliance that can be moved manually and easily.
  • a cooking plate appliance comprises a cooking plate, for example glass-ceramic, on which can be positioned a pan, a pan or any other utensil may contain food to be heated or cooked, or on which can be positioned directly food to heat or cook.
  • This cooking appliance generally also has a box having a bottom and side walls forming a base inside which is (or are) positioned (s) one (or more) element (s) heating (s) , such as for example a radiant or halogen focus (s), as well as regulating means for varying the power of the latter (or of these), or even for programming its (their) release and its (their) stop.
  • the hob closes the top of the box.
  • the present invention relates more particularly to a hob for a fixed or mobile cooking appliance comprising on the one hand a base plate, in particular a glass-ceramic base plate, having at least one cooking zone and on the other hand comprising at least one cooking zone.
  • a control and / or information zone said control and / or information zone being formed by a window separated from said base plate by at least one plastics gasket.
  • a first disadvantage of this configuration is that the seal is likely to be damaged by the heat emitted by a hot utensil that would be positioned very close to or even above.
  • a second disadvantage of this configuration is that it is difficult to achieve precise positioning and precise fixing, in the three dimensions of the space, of the screen vis-à-vis the window which is located above; however, this positioning is very important to ensure a perception of quality of the display of the screen through the window.
  • connection between the window and the base plate is a permanently elastic connection according to this document.
  • This connection is fragile in view of the heat that can be emitted by a utensil near or on the link and is not rigid and the window can move to use. This movement is harmful for the perception of the display of the screen through the window.
  • the object of the invention is to overcome the disadvantages of the prior art and to provide an easy to implement and inexpensive solution to allow sealing between the window and the base plate vis-à-vis the outside with a seal and to ensure the protection of this seal vis-à-vis a hot utensil positioned near this seal, or on or above this seal.
  • Another aim is to provide a solution for the reliable and accurate positioning and the reliable and accurate fixing of a display screen with respect to a window formed in a cooking plate and through which the display of this screen is displayed.
  • the present invention thus relates in its broadest sense to a cooking plate for a fixed or mobile cooking appliance according to claim 1.
  • This cooking plate comprises a base plate, especially a vitroceramic base plate, having a singing a circumferential outer surface and a circumferential outer edge forming a plane and which is located at the intersection between said edge of said base plate and said outer surface of said base plate, said cooking plate having at least one cooking zone; and at least one control and / or information zone, said control and / or information zone comprising a window separated from said base plate and having a surround, an outer surface and an outer peripheral edge located at the intersection between said edge of said window and said outer surface of said window, said cooking plate further comprising a joint of synthetic material which is located between a portion of the edge of said base plate and a portion of the edge of said window to allow sealing between the window and the base plate vis-à-vis the outside, said joint presenting an outer surface.
  • the seal allows sealing against the outside. It is in contact with at least half the height of the edge of said base plate and is in contact with at least half the height of the edge of said window; it seals to prevent any fluid coming from outside to penetrate between these two songs.
  • At least part of, or all, the outer edge of said window is in the plane of the outer edge of said base plate.
  • the outer peripheral edge of the base plate thus all around the base plate and constitutes the junction, all around the base plate between the edge of the base plate and the outer surface of the base plate.
  • the outer peripheral edge of the window is thus all around the window and is the junction, all around the window between the edge of the window and the outer surface of the window.
  • the present invention thus proposes to protect the seal which is provided at least partly around the window, between the window and the base plate to prevent contact between a hot utensil and this seal.
  • the seal which is located between a portion of the edge of said base plate and a portion of the edge of said window does not comprise silicone.
  • a first option consists in choosing the material of the flange as it has a solid transformation point to viscous Tg, or a melting point Tf, which is greater than the point of transformation of the material of said seal Tg 'so that the flange brings additional resistance to heat;
  • the material of said flange has a viscous solid transformation point Tg, or a melting point Tf, which is at least 20 ° C higher, and more preferably at least 50 ° C, at the point of transformation. of the material of said seal Tg '.
  • a second option consists in choosing the material of the flange such that it has a viscous solid transformation point Tg, or a melting point Tf, which is greater than 200 ° C., and preferably greater than 250 ° C., or even higher. at 300 ° C.
  • Tg viscous solid transformation point
  • Tf melting point
  • thermoplastic silicone materials can withstand (i.e. without modification of their mechanical properties) temperatures up to 225 ° C, or even up to 320 ° C, but in general these materials are very expensive and are difficult to implement.
  • solid to viscous transformation point Tg is to be understood as a “glass transition temperature, Tg" in the usual sense.
  • an air gap and / or an insulating element for example made of polystyrene or polyurethane foam or of ceramic or comprising mineral fibers, and in particular glass fibers
  • an air gap and / or an insulating element for example made of polystyrene or polyurethane foam or of ceramic or comprising mineral fibers, and in particular glass fibers
  • the flange according to the invention is preferably unique. It is preferably present all along the portion of the seal which separates said window from said base plate. If several flanges are provided along the joint, the distance between two flanges must be equal to or less than 2 mm in order to maintain the effect of protection against heat.
  • the gasket preferably covers at least a portion of the length of the outer edge of said base plate and / or the gasket preferably covers at least a portion of the length of the outer edge of said window.
  • the flange may be in the continuity ("flush") of at least a portion of the length of the outer edge of said base plate and / or may be in the continuity ("flush") of at least a portion the length of the outer edge of said window to obtain a good visual integration of the flange.
  • said seal has a visible outer surface (that is to say not covered by a flange portion) whose width is equal to or smaller than 2 mm said flange preferably covering the entire outer surface of the gasket which is located between the outer surface of said base plate and the outer surface of said window, so as to be sure that the heat of a utensil can not damage the gasket .
  • said flange comprises, seen in vertical section at a location at least, a shape of S with on the one hand the upper part of the S located in the continuity ("flush") of at least a portion of the outer surface of said window or located over at least a portion of the outer surface of said window and on the other hand the lower part of the S extending to said base plate and located above the outer surface of said base plate.
  • said flange comprises, seen in vertical section at a location at least, a shape of S with on the one hand the upper part of the S located in the continuity ("flush") of at least a portion of the outer edge of said window or located above at least a portion of the outer edge of said window and on the other hand the lower portion of the S extending towards said base plate and located lower than the plane of the outer surface of said base plate.
  • the flange comprises, seen in vertical section at a location at least, a form of C or C with on the one hand the upper part of the C located in the continuity ("flush") of a part in less than the outer edge of said window or located above at least a portion of the outer edge of said window and with the lower portion of the C extending to said window and located above from the plane of the outer surface of said base plate.
  • the cooking plate comprises a control screen and / or display under said window. It is then possible that it is the seal and / or the flange which comprises (s) means for fixing this control screen and / or display under said window.
  • the present invention thus proposes to use directly the seal which is provided at least partly around the window, between the window and the base plate, to position and fix the control and / or display screen vis-à-vis view of this window and / or use directly the flange protecting the gasket which is provided at least partly around the window, between the window and the base plate, to position and correctly fix the control screen and / or visualization vis-à-vis this window.
  • the window which is thus located above the control and / or display screen is transparent in order to allow to see through what is displayed on the screen; it is in a material different from that of the base plate; the screen is LCD, LED or OLED and maybe a touch screen.
  • Fixing the screen to the seal is preferably a mechanical attachment and is thus not a chemical fixation (especially bonding).
  • the seal preferably has a central portion which is located both facing at least a portion of the edge of the window and facing a portion of the periphery of the cut-out hole. in the base plate and which welcomes the window.
  • said gasket preferably has an inner seal portion extending under an inner surface of said base plate and / or an inner surface of said window. This inner part thus makes it possible to increase the mechanical strength of the connection between the gasket and respectively said base plate and / or said window.
  • This part of the inner seal may have, for example, under the inner surface of the window, in vertical section, a form of C or L.
  • said seal has an outer seal portion extending over a central seal portion and optionally extending to an outer surface of said baseplate and / or an outer surface of said window.
  • the present invention also relates to a fixed or mobile cooking appliance provided with a cooking plate according to the invention.
  • the present invention also relates to several methods of manufacturing the cooking plate according to the invention.
  • said base plate, said window and said flange at least are arranged in a mold which is then closed and a synthetic material is then injected into a mold cavity to form said seal.
  • a preformed seal and having at least said flange is bonded to said base plate and / or said window.
  • said gasket comprising at least said flange is molded against said base plate or against said window, said window or said base plate being then inserted into a groove of a frame formed by the joint when the one is hot.
  • the present invention allows, in a simple and effective way, in a cooking plate, to protect the heat seal between the base plate and the window. It is thus not necessary to implement a very complex and very expensive joint which in itself presents the ability to withstand the heat of a utensil placed near or above.
  • the flange thus provides a housing to effectively protect the joint heat that could affect its properties and / or appearance.
  • the seal according to the invention makes it possible to protect the edge of the window, even if this window is not in the surface continuity of the plate (projecting with respect to the external surface of the plate but parallel to the plate) or if this window is inclined with respect to the plate.
  • the seal according to the invention makes it possible to position accurately in the three dimensions of the space and to fix accurately in the three dimensions of the space a control screen and / or display vis-à-vis a window located above.
  • Positioning accuracy and fixing accuracy can be as high as one tenth of a millimeter.
  • the seal according to the invention makes it possible to ensure fluid tightness between the edge of the window and the periphery of the hole made in the plate, even if this window is not in the continuity of the surface of the plate. (protruding from the outer surface of the plate but parallel to the plate) or if this window is inclined relative to the plate.
  • the solution of the invention is applicable even when the control zone and / or information is located on the edge of the hob.
  • control and / or display screen is attached to the seal and / or the flange makes it possible to easily change the screen if necessary (in the event of a faulty screen): access under the hob and undo the means for fixing the screen; in addition, it is easy and inexpensive to proceed to change the faulty screen by a properly functioning screen which will in turn be accurately positioned and precisely fixed vis-à-vis the window; it is not necessary to change the base plate, the window, or to redo the joint between the base plate and the window.
  • the flanges do not have the same external appearance and in particular do not have the same color of outer surface of a cooking plate to another, to allow to "customize” the cooking plates of the same series.
  • the figure 1 illustrates an embodiment of a cooking appliance according to the invention.
  • the apparatus illustrated here thus has a generally parallelepipedal right shape.
  • the apparatus illustrated here is a fixed cooking appliance, also called an "integrated appliance", which is intended to be installed in an opening in a worktop or a stove and which, once installed and fixed, can not to be moved; however, the present invention is also applicable to a mobile cooking appliance, being in the form of a box and which can be positioned for example on a worktop or a dining table and can be moved manually.
  • the cooking apparatus comprises a cooking plate 1 which is flat and which has a general shape of parallelepiped right (that is to say, rectangle or square view from above).
  • This cooking plate 1 comprises a base plate 2, which can be in particular a glass-ceramic plate.
  • the baseplate may also have a top view, a circular shape, or bean, or trapezoidal; the only form constraint is that related to the method of manufacture of the base plate.
  • the base plate 2 has an outer surface 21 intended to be positioned horizontally and on which the cooking utensils (pans or other) to be heated to rest;
  • the cooking plate 1 according to the invention is considered to be positioned horizontally and the positions: under / below and on / above are made relative to the vertical.
  • the base plate 2 further comprises an inner surface 22 which is located vis-à-vis its outer surface 21 and a peripheral edge 20, located between these two surfaces.
  • the base plate 2 also has a peripheral outer edge 27 which is located at the junction between its edge 20 and its outer surface 21 and which forms a plan. This plane is thus defined by the periphery of the base plate 2 which is formed by the outer edge 27.
  • a base plate is generally flat, it can happen that a base plate is curved, especially towards the inside of the cooking appliance.
  • the curved shape is formed inside the periphery of the base plate which is defined by the outer edge 27, so that this outer edge always forms a plane.
  • the cooking plate 1 has here four cooking zones 3, 3 ', 3 ", 3"', represented here by circles of different diameters, but which can be of any shape.
  • the cooking plate 1 also comprises a control and / or information zone 4.
  • a heating element such as a radiant or halogen element and / or at least one gas burner and / or at least one induction heating coil.
  • a heating element such as a radiant or halogen element and / or at least one gas burner and / or at least one induction heating coil.
  • the power supply of the heating element has not been illustrated.
  • the control zone and / or information 4 is the place where it is possible to control the operation of each cooking zone 3, 3 ', 3 ", 3'" and / or where it is possible to view information relating to the operation of each cooking zone 3, 3 ', 3 ", 3"'.
  • the single control and / or information zone 4 is the place from which it is possible to independently control the operation of all the cooking zones 3, 3 ', 3 ", 3'” and where it is it is possible to independently display information relating to the operation of all these cooking zones 3, 3 ', 3 ", 3'”; however, there could be for example two control and / or information areas, with for each control and / or information zone the possibility of independently controlling the operation of two of the four cooking zones and the possibility of viewing independently of the information relating to the operation of these two cooking zones.
  • control and / or information zone makes it possible to control other apparatus (s) and / or to visualize information relating to other apparatus (s) ( s), or even visualize any type of information.
  • the control and / or information zone 4 is formed by a window 5 which is made of a material different from that of the base plate 2.
  • the base plate 2 when the base plate 2 is glass-ceramic, its constituent material prevents a clear and precise transmission of information through.
  • the window 5 is preferably made of glass, optionally tempered thermally or chemically or optionally hardened. It is transparent, with a light transmission integrated in the visible higher than 70% (measured for example according to the illuminant D65); it is clear and preferably has a blur of less than 50%.
  • the window 5 is separated, preferably without direct physical contact, from the base plate 2 by a seal 6 of synthetic material, non-mineral.
  • the window 5 has a top view of the shape of a rectangle and is positioned in a hole of similar shape but whose periphery 25 is a little wider and a little longer than the window and has been arranged beforehand in the base plate 2.
  • This hole is a hole opening in the direction that it opens on the outer surface 21 of the base plate 2, as well as on its opposite surface: the inner surface 22 of the base plate 2 (no visible in figure 1 ); this parallelepipedic hole is a complete hole in the sense that its entire outer periphery is formed on the outer surface 21 and all its inner periphery is formed on the inner surface 22.
  • the window may also have, seen from above, a circular shape, or bean, or trapezoidal; the only constraint of form is that related to the mode of manufacture of the window.
  • the window 5 has an outer surface 51 oriented in space as the outer surface 21 of the base plate 2, i.e. which is on the top of the cooking appliance.
  • the window 5 further comprises an inner surface 52 which is situated vis-à-vis its outer surface 51 and a peripheral edge 50, located between these two surfaces.
  • the edge 50 of the window 5 is smaller than the periphery 25 of the hole of the base plate when the window is located in this hole; however, the window 5 can also be positioned above this hole being larger than this hole and it is then possible that the edge 50 of the window 5 is larger than the periphery 25 of the hole of the base plate.
  • the window 5 also has an outer peripheral edge 57 which is located at the junction between its edge 50 and its outer surface 51 and which forms a plane. This plane is thus defined by the periphery of the window 5 which is formed by the outer edge 57.
  • a window 5 is curved, especially towards the inside of the cooking appliance.
  • the curved shape is preferably made inside the perimeter of the window 5 which is defined by the outer edge 57, so that this outer edge forms a plane, in order to facilitate the integration of the window 5 with respect to the base plate 2.
  • the seal 6, which is located between a portion of the edge 20 of the base plate 2 and a portion of the edge 50 of the window 5, and which thus makes a junction of material between the edge of the base plate and the edge of the the window also has an outer surface 61 which is also spatially oriented as the outer surface 21 of the base plate 2, i.e. which is on the top of the cooking appliance.
  • the seal 6 may for example be based on thermoplastic; it can be based on or in: polycarbonate, polyvinyl chloride or polyurethane; all of these materials have a melting temperature of 200 ° C or less and even 180 ° C or less.
  • At least a portion of the outer surface 61 of the gasket 6 which is located between the outer surface 21 of said base plate 2 and the outer surface 51 of the window 5 is covered with a flange 66, 66 'of a material different from that attached 6.
  • the flange 66 thus protects the gasket 6 in the configuration where at least a part of or all the outer edge 57 of the window 5 is not in the plane of the outer edge 27 of the base plate 2, as visible in Figures 5 to 8 , 9 to the right, 10 and 11 .
  • the flange 66 'thus protects the gasket 6 in the configuration where at least part of, or all, the outer edge 57 of the window 5 is in the plane of the outer edge 27 of the base plate 2, as visible in Figures 2 to 4 and 9 to the left.
  • the flange 66, 66 ' may be for example stainless steel, a thickness of 2 mm, or possibly less.
  • the melting temperature of the material of the flask is greater than 200 ° C, and even greater than 250 ° C, and even greater than 300 ° C.
  • said gasket 6 comprises means for fixing, directly or indirectly at the gasket 6, in the three dimensions of the space x, y, z, of a control and / or visualization screen 7 under the window 5, of such that the orientation of said screen with respect to the window 5 is unchanged as soon as the screen is fixed rigidly to said window and it is then possible to display the display of the screen 7 through the window 5.
  • the flange 66 which comprises means for fixing a control screen 7 and / or display under said window 5.
  • this variant also applies to the flange 66 which thus protects the seal 6 in the configuration where at least a portion of, or all, the outer edge 57 of the window 5 is not in the plane of the outer edge 27 of the base plate 2.
  • the screen 7 is thus correctly parallel to the window 5 and the display of the display is ideal. There is no deformation of the image through the window 5.
  • the window is attached on its edge to the base plate 2 only by the seal 6 or the flange 66, 66 'according to the variant.
  • the seal 6 is present all around the periphery of the window 5, or in any case along the periphery of the window 5 which is opposite the base plate 2.
  • the flange 66, 66 ' is thus present over the entire periphery of the window 5, or in any case along the periphery of the window 5 which is opposite the base plate 2 in order to protect the seal .
  • the seal 6 thus has a central portion 60 which is located both vis-à-vis at least a portion of the edge 50 of the window 5 and vis-à-vis a portion of the periphery 20 of the hole formed in the base plate 2 and which accommodates the window 5.
  • this central portion 60 may be located opposite at least a portion of the edge of the window 5 over the length and / or the height of this edge 50 and this central portion of seal 60 may be located opposite at least a portion of the periphery of the hole along the length and / or the height of this hole.
  • the gasket 6 preferably has an inner seal portion 62 extending under the inner surface 22 of the plate 2 and / or under the inner surface 52 of the window 5.
  • the seal 6 has an inner seal portion 62 which preferably extends both beneath the inner surface 22 of the plate 2 and under the inner surface 52 of the window 5, as illustrated with the aid of FIGS. Figures 2 to 11 , in order to improve the mechanical strength between the window 5 and the base plate 2 via the gasket 6.
  • the C or L shape is sufficiently elongated to form a rail to accommodate two sides of the screen 7.
  • the screen can thus be slid under the window 5 in the groove 63 by the right or left; it is also possible to provide that a left or right edge of the gasket 6 is also provided with an L-shaped or C-shaped inner seal portion 62 so that the screen is held on three sides once properly positioned under the window 5.
  • This insert is preferably metallic, with a coefficient of expansion which is preferably relatively low and which is adjusted to the thermal constraints of manufacture of the seal 6 and operation of the cooking appliance.
  • the insert can be perforated so that the material of the seal penetrates through the performances and thus increases the mechanical cohesion between the insert and the seal.
  • the insert can be positioned at least partly in the central portion of seal 60 and / or in the outer seal portion 61 and / or in the inner seal portion 62.
  • the gasket 6 itself which makes it possible to directly hook the screen 7, but an accessory attached to the gasket 6 which makes it possible to hang indirectly the screen 7 at the joint 6.
  • This accessory may be for example an insert as indicated above, but having on the one hand a sole 80 which is integrated at least partially or completely into a portion of material of the gasket 6 and on the other hand at least one salient element 81 protruding at least partially, or completely, outside said seal 6, for fixing said screen 7 control and / or visualization.
  • the projecting element 81 extends approximately perpendicular to the general plane of the sole 80.
  • the sole 80 may be provided along two left and right edges of the window 5 (with reference to the positioning of the figure 1 ). It reinforces the mechanical connection between the gasket 6 and the screen 7.
  • the protruding element could be a clip in the manner of known clips for fixing glazing in the bay of a body.
  • a nut is attached (for example welded) to a projecting part of an insert.
  • the window 5 has the same thickness as the base plate 2 and the outer surface 51 of the window 5 is exactly in continuity with the outer surface 21 of the base plate 2.
  • the window 5 it is also possible for the window 5 to be thinner than the plate 2 and for the seal 6 to be able to compensate for this difference in thickness to allow the outer surface 51 of the window 5 to be exactly in line with the surface. outside 21 of the base plate 2; in this case, the inner surface 52 of the window 5 is set back from the inner surface 22 of the base plate 2 upwards.
  • the central joint portion 60 makes it possible to provide a surface continuity between the outer surface 51 of the window 5 and the outer surface 21 of the base plate 2 by filling in a fluid-tight manner exactly the space available between these two surfaces. There is also surface continuity between the outer edge 57 of the window 5 and the outer edge 27 of the base plate 2.
  • the seal 6 is flush with the outer edge 27 and with the outer edge 57, but the flange 66 'is raised relative to the plane defined by the outer edge 27.
  • the flange 66' has in vertical section a shape of rectangle or square. This raised position of the flange prevents any contact between a kitchen utensil and the seal 6 by making a vertical stop.
  • the window 5 also has the same thickness as the base plate 2 and the seal 6 is also flush with the outer edge 27 and with the outer edge 57 and the flange 66 'is also raised relative to the plane defined by the outer edge 27, but further means for fixing the screen 7 control and / or viewing under said window 5 are attached to the flange 66 '.
  • the flange 66 ' has, in its portion above the plane defined by the outer edge 27, in vertical section, a trapezoidal shape with the broad base of the trapezium at the bottom. This raised position of the flange prevents any contact between a kitchen utensil and the seal 6 by making a vertical stop. It is possible to provide holes in the flange so that the material of the central portion of seal 60 passes through the flange for better maintenance.
  • the window 5 allows a magnifying effect vis-à-vis the screen 7 for any observer looking at the screen 7 of the top of the window 5, or by by means of a glass sheet having a particular focal length, or by means of a transparent polymer film glued against the inner surface 52.
  • the window 5 is not positioned parallel to the base plate 2, but inclined relative to this plate, at an angle ⁇ of between 2 ° and 45 °, or even between 5 ° and 25 °.
  • the totality of (all) the outer edge 57 of said window 5 is not in the plane of the outer edge 27 of said base plate 2.
  • the central seal portion 60 performs the watertight seam the entire periphery of the window 5 between the edge 20 of the base plate 2 and the edge 50 of the window 5, in order to protect the edge 50 of the window 5 and this protection is completed by the flange 66.
  • FIG 12 another base plate 2 is illustrated: unlike the base plate of the figure 1 only two cooking zones 3, 3 'are provided.
  • the hole accommodating the control zone and / or information 4 is not a complete hole, but a partial hole, along one of the edges of the base plate 2 (here the right edge).
  • this hole is a hole opening in the direction that it opens on the outer surface 21 of the base plate 2, as well as on its inner surface 22, but this hole is not a complete hole in the sense that its periphery, both on the outer surface and on the inner surface, is not closed.
  • the seal 6 is present only along three edges of the periphery of the window 5, or in any case along the periphery of the window 5 which is opposite of the base plate 2.
  • a flange according to the invention protects the seal to prevent contact of the seal with a hot cookware.
  • the window 5 extends beyond the edge (here the right edge) of the base plate 2 in which is formed the notch which forms the hole.
  • this hole is preferably formed by cutting the base plate 2 before the ceramization step in the case of a base plate ceramic.
  • the window 5 is compatible with a touch screen 7 by providing a conductive transparent film against the inner surface 52.
  • the base plate is not flat; In this case, at least in part along the periphery of the hole in the base plate, the outer surface of the window has a shoulder, inwardly or outwardly.
  • the mold cavity 92 also has recesses 93 for positioning the screws 82 before molding so that the sole 80 of each screw is positioned in the mold cavity but that the threaded portion of each screw is protected so that the material of the seal does not come into contact with the thread when molding the seal.
  • a synthetic material is injected into the molding cavity to form the seal 6 comprising means for fixing the control screen and / or display.
  • FIGS 14 to 16 illustrate a way to correctly position the base plate 2 and the flange (s) 66, 66 'vis-à-vis the mold part 90 and the window 5 vis-à-vis this part of mold 90.
  • the mold part 90 thus comprises retractable centering elements 95 for centering the base plate 2 vis-à-vis the mold part 90, as well as fixed centering elements 96 for centering the window 5 screws. with respect to the mold part 90.
  • the mold it is not necessary for the mold to accommodate the whole of the base plate 2; it can be provided that the molding is operated only on a part of the base plate 2, the part which has the hole in which the window 5 is fixed thanks to the seal 6.
  • the gasket 6 is preformed (made in previously desired shape) and it thus already comprises the (or the) flange (s) 66, 66 'and means for fixing the control and / or display screen 7; then, this seal 6 is glued to the base plate 2 and / or to the window 5.
  • the seal 6 comprising the (or) flange (s) 66, 66 'and means for the rigid attachment of the control screen and / or display is molded against the base plate 2 or against window 5; then, the window 5 or respectively the plate 2 is then introduced into a groove of the frame formed by the gasket 6 when the gasket is hot and the window 5 is then fixed to the base plate 2 by retraction of the material constituting the gasket 6, without chemical adhesion between the gasket and the window or respectively the base plate.
  • the groove of the frame accommodating the window 5 is formed by the central seal portion 60, the outer seal portion 61 extending on the window 5 and the inner seal portion 62 extending under the window 5.
  • the groove of the frame accommodating the base plate 2 is formed by the central seal portion 60, the outer seal portion 61 extending on the base plate 2 and the inner seal 62 extending under the base plate 2.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Cookers (AREA)
  • Electric Stoves And Ranges (AREA)
  • Baking, Grill, Roasting (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (17)

  1. Kochfeld (1) für ein feststehendes oder mobiles Kochgerät, das eine Grundplatte (2), insbesondere eine Glaskeramikgrundplatte, mit einem Rand (20), einer Außenfläche (21) und einer eine Ebene bildenden Außenumfangskante (27) umfasst, die an dem Schnittpunkt zwischen dem Rand (20) und der Außenfläche (21) liegt, wobei das Kochfeld (1) mindestens eine Kochzone (3, 3') und mindestens eine Steuer- und/oder Informationszone (4) aufweist, wobei die Steuer- und/oder Informationszone (4) ein von der Grundplatte (2) getrenntes Fenster (5) mit einem Rand (50), einer Außenfläche (51) und einer Außenumfangskante (57) aufweist, die an dem Schnittpunkt zwischen dem Rand (50) und der Außenfläche (51) liegt, wobei das Kochfeld (1) ferner eine Kunststoffdichtung (6) aufweist, die zwischen einem Teil des Randes (20) der Grundplatte (2) und einem Teil des Randes (50) des Fensters (5) angeordnet ist, um die Abdichtung zwischen dem Fenster und der Grundplatte zu ermöglichen, wobei die Dichtung (6) eine Außenfläche (61) aufweist, wobei mindestens ein Teil der oder die gesamte Außenumfangskante (57) des Fensters (5) nicht in der Ebene der Außenumfangskante (27) der Grundplatte (2) liegt, dadurch gekennzeichnet, dass das Kochfeld mindestens eine Endplatte (66) aus einem anderen Material als demjenigen der Dichtung (6) aufweist, die über oder auf der Dichtung (6) angeordnet ist, wobei mindestens ein Teil der Außenfläche (61) der Dichtung (6) zwischen der Außenfläche (21) der Grundplatte (2) und der Außenfläche (51) des Fensters (5) durch die Endplatte (66) abgedeckt ist.
  2. Kochfeld (1) nach Anspruch 1, dadurch gekennzeichnet, dass das Material der Endplatte (66) einen festen bis viskosen Umwandlungspunkt Tg oder einen Schmelzpunkt Tf aufweist, der höher als der Umwandlungspunkt des Materials der Dichtung (6) Tg' ist.
  3. Kochfeld (1) nach Anspruch 1 oder Anspruch 2, dadurch gekennzeichnet, dass das Material der Endplatte (66) einen Umwandlungspunkt Tg von fest in viskos oder einen Schmelzpunkt Tf aufweist, der höher als 200 °C und vorzugsweise höher als 250 °C, sogar höher als 300 °C ist.
  4. Kochfeld (1) nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, dass das Material der Dichtung (6) einen Umwandlungspunkt Tg' von fest in viskos oder einen Schmelzpunkt Tf aufweist, der gleich oder kleiner als 200 °C, sogar gleich oder kleiner als 180 °C ist.
  5. Kochfeld (1) nach einem der Ansprüche 1 bis 4, dadurch gekennzeichnet, dass ein Lufspalt (67) und/oder ein Isolierelement (68) zwischen der Endplatte (66) und der Dichtung (6) unter einem Teil der Endplatte (66) angeordnet ist.
  6. Kochfeld (1) nach einem der Ansprüche 1 bis 5, dadurch gekennzeichnet, dass die Endplatte (66) entlang des gesamten Teils der Dichtung (6) vorhanden ist, der das Fenster (5) von der Grundplatte (2) trennt.
  7. Kochfeld (1) nach einem der Ansprüche 1 bis 6, dadurch gekennzeichnet, dass die Dichtung (6) mindestens einen Teil der Länge der Außenkante (27) der Grundplatte (2) abdeckt und/oder die Dichtung (6) mindestens einen Teil der Länge der Außenkante (57) des Fensters (5) abdeckt.
  8. Kochfeld (1) nach einem der Ansprüche 1 bis 7, dadurch gekennzeichnet, dass die Endplatte (66) bündig mit mindestens einem Teil der Länge der Außenkante (27) der Grundplatte (2) und/oder bündig mit mindestens einem Teil der Länge der Außenkante (57) des Fensters (5) ist.
  9. Kochfeld (1) nach einem der Ansprüche 1 bis 8, dadurch gekennzeichnet, dass die Dichtung (6), in einem vertikalen Schnitt gesehen, mindestens an einer Stelle eine sichtbare Außenfläche (64) aufweist, deren Breite gleich oder kleiner als 2 mm ist, wobei die Endplatte (66) vorzugsweise die gesamte Außenfläche (61) der Dichtung (6) abdeckt, die zwischen der Außenfläche (21) der Grundplatte (2) und der Außenfläche (51) des Fensters (5) liegt.
  10. Kochfeld (1) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Dichtung (6) Mittel zur Befestigung eines Steuer- und/oder Anzeigebildschirms (7) unter dem Fenster (5) aufweist.
  11. Kochfeld (1) nach einem der Ansprüche 1 bis 9, dadurch gekennzeichnet, dass die Endplatte (66) Mittel zur Befestigung eines Steuer- und/oder Anzeigebildschirms (7) unter dem Fenster (5) aufweist.
  12. Kochfeld (1) nach einem der Ansprüche 1 bis 11, dadurch gekennzeichnet, dass die Endplatte (66), in einem vertikalen Schnitt gesehen, mindestens an einer Stelle zwei Teile aufweist:
    - einen im Wesentlichen vertikalen Teil, der über der Ebene der Außenfläche (21) der Grundplatte (2) liegt, und
    - einen im Wesentlichen horizontalen Teil, der bündig mit mindesten einem Teil der Außenkante (57) des Fensters (5) angeordnet ist oder oberhalb mindestens eines Teils der Außenkante (57) des Fensters (5) liegt.
  13. Kochfeld (1) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Endplatte (66), in einem vertikalen Schnitt gesehen, an mindestens einer Stelle eine S-Form aufweist, wobei einerseits der obere Teil des S bündig mit mindestens einem Teil der Außenfläche (51) des Fensters (5) angeordnet ist oder über mindestens einem Teil der Außenfläche (51) des Fensters (5) liegt, und sich andererseits der untere Teil des S zu der Grundplatte (2) hin erstreckt und über der Außenfläche (21) der Grundplatte (2) liegt.
  14. Kochfeld (1) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Endplatte (66), in einem vertikalen Schnitt gesehen, an mindestens einer Stelle eine S-Form aufweist, wobei einerseits der obere Teil des S bündig mit mindestens einem Teil der Außenkante (57) des Fensters (5) angeordnet ist oder über mindestens einem Teil der Außenkante (57) des Fensters (5) liegt, und sich andererseits der untere Teil des S zu der Grundplatte (2) hin erstreckt und niedriger als die Ebene der Außenfläche (21) der Grundplatte (2) liegt.
  15. Kochfeld (1) nach einem der Ansprüche 1 bis 12, dadurch gekennzeichnet, dass die Endplatte (66), in einem vertikalen Schnitt gesehen, an mindestens einen Punkt eine C- oder Ç-Form aufweist, wobei einerseits der obere Teil des C bündig mit mindestens einem Teil der Außenkante (57) des Fensters (5) angeordnet ist oder über mindestens einem Teil der Außenkante (57) des Fensters (5) liegt, und sich andererseits der untere Teil des C zu dem Fenster (5) hin erstreckt und über der Ebene der Außenfläche (21) der Grundplatte (2) liegt.
  16. Feststehendes oder mobiles Kochgerät, das mit einem Kochfeld (1) nach einem der Ansprüche 1 bis 15 versehen ist, wobei das Kochfeld eine Grundplatte (2), insbesondere eine Glaskeramikgrundplatte, mit einem Rand (20), einer Außenfläche (21) und einer eine Ebene bildenden Außenumfangskante (27) umfasst, die an dem Schnittpunkt zwischen dem Rand (20) und der Außenfläche (21) liegt, wobei das Kochfeld (1) mindestens eine Kochzone (3, 3') und mindestens eine Steuer- und/oder Informationszone (4) aufweist, wobei die Steuer- und/oder Informationszone (4) ein von der Grundplatte (2) getrenntes Fenster (5) mit einem Rand (50), einer Außenfläche (51) und einer Außenumfangskante (57) an dem Schnittpunkt zwischen dem Rand (50) und der Außenfläche (51) aufweist, wobei das Feld (1) ferner eine Kunststoffdichtung (6) aufweist, die zwischen einem Teil des Randes (20) der Grundplatte (2) und einem Teil des Randes (50) des Fensters (5) liegt, um die Abdichtung zwischen dem Fenster und der Grundplatte zu ermöglichen, wobei die Dichtung (6) eine Außenfläche (61) aufweist, wobei mindestens ein Teil der oder die gesamte Außenumfangskante (57) des Fensters (5) nicht in der Ebene der Außenumfangskante (27) der Grundplatte (2) liegt, dadurch gekennzeichnet, dass das Kochfeld mindestens eine Endplatte (66) aus einem anderen Material als demjenigen der Dichtung (6) aufweist, die über oder auf der Dichtung (6) angeordnet ist, wobei mindestens ein Teil der Außenfläche (61) der Dichtung (6) zwischen der Außenfläche (21) der Grundplatte (2) und der Außenfläche (51) des Fensters (5) durch die Endplatte (66) abgedeckt ist.
  17. Verfahren zur Herstellung eines Kochfeldes (1) nach einem der Ansprüche 1 bis 15, dadurch gekennzeichnet, dass die Grundplatte (2), das Fenster (5) und die Endplatte (66) in einer Form angeordnet werden, die dann geschlossen wird, und dass dann ein Kunststoff in einen Formhohlraum (92) eingespritzt wird, um die Dichtung (6) zu bilden.
EP13808103.9A 2012-11-26 2013-11-25 Kochfeld mit fenster und endplatte, garvorrichtung und verfahren zur herstellung des kochfeldes Active EP2923153B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR1261217A FR2998651B1 (fr) 2012-11-26 2012-11-26 Plaque de cuisson a fenetre et flasque, appareil de cuisson, et procede de fabrication de la plaque
PCT/FR2013/052839 WO2014080145A1 (fr) 2012-11-26 2013-11-25 Plaque de cuisson a fenetre et flasque, appareil de cuisson, et procede de fabrication de la plaque

Publications (2)

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EP2923153A1 EP2923153A1 (de) 2015-09-30
EP2923153B1 true EP2923153B1 (de) 2019-01-09

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US (1) US10107503B2 (de)
EP (1) EP2923153B1 (de)
JP (1) JP6463688B2 (de)
KR (1) KR102081643B1 (de)
CN (1) CN104981664B (de)
DE (1) DE202013012188U1 (de)
ES (1) ES2720283T3 (de)
FR (1) FR2998651B1 (de)
TR (1) TR201904909T4 (de)
WO (1) WO2014080145A1 (de)

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KR20150089048A (ko) 2015-08-04
US20150323192A1 (en) 2015-11-12
FR2998651A1 (fr) 2014-05-30
DE202013012188U1 (de) 2015-08-10
JP2016502060A (ja) 2016-01-21
WO2014080145A1 (fr) 2014-05-30
CN104981664B (zh) 2017-09-15
TR201904909T4 (tr) 2019-05-21
JP6463688B2 (ja) 2019-02-06
FR2998651B1 (fr) 2018-08-17
CN104981664A (zh) 2015-10-14
KR102081643B1 (ko) 2020-02-27
EP2923153A1 (de) 2015-09-30
ES2720283T3 (es) 2019-07-19
US10107503B2 (en) 2018-10-23

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