EP0437826B1 - Dispositif de cuisson électrique pour au moins une plaque de cuisson - Google Patents

Dispositif de cuisson électrique pour au moins une plaque de cuisson Download PDF

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Publication number
EP0437826B1
EP0437826B1 EP19900125374 EP90125374A EP0437826B1 EP 0437826 B1 EP0437826 B1 EP 0437826B1 EP 19900125374 EP19900125374 EP 19900125374 EP 90125374 A EP90125374 A EP 90125374A EP 0437826 B1 EP0437826 B1 EP 0437826B1
Authority
EP
European Patent Office
Prior art keywords
hotplate
mounting plate
electric
light
cooking appliance
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.)
Expired - Lifetime
Application number
EP19900125374
Other languages
German (de)
English (en)
Other versions
EP0437826A2 (fr
EP0437826A3 (en
Inventor
George J.J. Randolph, Jr.
Felix Schreder
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.)
EGO Elektro Geratebau GmbH
Original Assignee
EGO Elektro Gerate Blanc und Fischer GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE9004485U external-priority patent/DE9004485U1/de
Application filed by EGO Elektro Gerate Blanc und Fischer GmbH filed Critical EGO Elektro Gerate Blanc und Fischer GmbH
Priority to AT9090125374T priority Critical patent/ATE104758T1/de
Publication of EP0437826A2 publication Critical patent/EP0437826A2/fr
Publication of EP0437826A3 publication Critical patent/EP0437826A3/de
Application granted granted Critical
Publication of EP0437826B1 publication Critical patent/EP0437826B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00—Ohmic-resistance heating
    • H05B3/68—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
    • H05B3/748—Resistive heating elements, i.e. heating elements exposed to the air, e.g. coil wire heater
    • 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
    • F24C15/00—Details
    • F24C15/10—Tops, e.g. hot plates; Rings
    • F24C15/102—Tops, e.g. hot plates; Rings electrically heated
    • 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
    • H05B3/70—Plates of cast metal

Definitions

  • the invention relates to an electric cooking device for at least one electric hotplate according to the first part of claim 1.
  • US-A-2 492 100 shows a hotplate which consists of several separate rings, between which there are spaces.
  • a lamp is arranged laterally below the hotplate, illuminating part of the underside of the hotplate, so that the light shines through part of the interstices between the cooking rings.
  • the hotplate is not safe to run because cookware can penetrate into the lower area through the spaces and there can also contaminate and electrically endanger the lighting device.
  • the visual effect is also limited because only part of the ring surfaces are illuminated and the visibility of the rings is still dependent on the viewer looking at an illuminated background or into the dark interior of the cooker.
  • US-A-2 346 237 shows a display device with a lamp, located below a button-like one, in a sheet metal mounting plate provided lighting window is arranged at a distance from the hotplate.
  • DE-U-1 949 906 describes a signaling device in which kidney-shaped openings are provided in a sheet metal mounting plate of a cooker around the hot plates, under which electric lights are located. A light ring is also mentioned, but not described in detail.
  • GB-A-1 346 574 shows a cooking appliance with a glass ceramic cooking surface, under which a heating element is arranged.
  • a heating element is arranged in a contact-heated version.
  • there is a metal sieve under the glass ceramic plate which has openings in the edge area of the heating element. The light from a lamp arranged in a bowl can shine through these openings and produce a luminous ring shining through the glass ceramic plate around the cooking surface, which indicates the shape and the operating state of the cooking surface.
  • the object of the invention is to provide an electric cooking device which avoids the disadvantages of the prior art, in particular with a display device which can be used with hotplates of any structure. This object is solved by claim 1.
  • the electric cooking device according to the invention is intended for electric hot plates which have a non-translucent cooking surface. They can be installed in mounting plates with recesses for receiving the electric hot plates.
  • lighting means are also provided, which are arranged under the electric hotplate, and light passage means are provided which illuminate an edge area of the mounting plate or parts thereof surrounding the hotplate.
  • Such a display device can also be used for plates made of cast material, e.g. Irons, which are supported with a mounting ring on the mounting opening.
  • plates made of cast material e.g. Irons
  • the light can radiate through possibly masked edge sections of the mounting plate, these light influencing means can consist of an opaque, for example black, coating of the entire plate, with the exception of the translucent sections, which in turn can be colored, opalized or can be designed in another way to influence the light.
  • the lighting means can consist of normal electric lamps in heat-resistant sockets, for example similar to oven lighting, which are arranged in a bowl-shaped lighting chamber which surrounds the hotplate from below and is supported on the underside of the mounting plate. This edge area can also form the mask.
  • the lighting chamber can at the same time replace a clamping bracket, which is engaged by a clamping pin of the hotplate, with which the latter is clamped downwards. It can also be formed from the material of the mounting plate itself if it is made of another material, for example sheet metal.
  • the lighting chamber if it is to have a flat construction, has a section which extends laterally beyond the hotplate area and on which the lamp is arranged, in a particularly preferred embodiment the lamp can also lie in the area below the hotplate, advantageously by arranging the lamp holder on the same place where the connecting lines run to the hotplate, only a single point is formed in which the passage of light is somewhat obstructed. Nevertheless, the overall height is still relatively low due to an essentially horizontal or flatly inclined lamp arrangement.
  • the light can pass through in the area of the mounting ring or an intermediate ring surrounding it.
  • Components which are translucent in the edge region are then arranged such that they have a light entry surface from the underside of the mounting plate and a light exit surface on the upper side. They can be used as transparent sealing materials be formed, which are arranged between a preferably very wide stainless steel mounting ring and the mounting plate, so that they are at a reduced temperature level.
  • the glowing ring can then be seen from the side and also illuminates the surface of the mounting plate.
  • edge cutouts in the mounting plate which are covered by transparent materials, for example a glass ring, from above or below.
  • the light conduction can be guided and distributed by the lighting means (one or more lamps) in such a way that the desired light effect, for example uniform or even non-uniform illumination of the edge, is achieved.
  • Light guide means which are widely known, can also be used for this purpose.
  • the light passage means for example an edge ring, could simultaneously serve as light guide and light exit means, and the lamp could then be connected to it at any point for direct irradiation.
  • the arrangement of a self-illuminating ring with electrical supply is also possible.
  • the invention enables the user to perceive the heating state immediately. Accordingly, depending on the switching state (on-off), the power setting, the respective temperature or temperature specification, the lighting means can be switched on and off or their properties can be changed, for example in terms of light intensity, light color or by emitting certain light pulses. For example the hot state of the plate can also be displayed after it has been switched off, which creates additional safety.
  • FIG. 1 to 3 shows a cooking appliance 11 with a built-in plate 12 made of tempered glass, which has recesses 13 in the form of round openings, built into the electric hot plates 14 are.
  • the electric hotplates consist of a hotplate body 15 made of cast iron material with an electrical heater 16 embedded in grooves on the underside, an upper flat cooking surface 17 and a downward-facing outer edge 18, on the outside of which an installation ring 19 made of thin stainless steel sheet metal is pressed (FIG. 4). It is directed obliquely downwards on the outside and is supported on an intermediate ring with an S-shaped cross section, which lies with its outer edge 21 in the edge region of the opening 13 on the mounting plate 12.
  • Installation is carried out in the usual way with an elastic sealing ring 22 which surrounds the inner edge of the opening 13 and is held by an L-shaped sheet metal ring 23 which has U-shaped, inwardly projecting support parts 24 for centering the hotplate.
  • FIG. 4 shows a lower cover 50 for the hotplate installation unit, which, when pressed by the central pin 25, is supported on the lower flange of the seal 22. It insulates the hotplate from below and forms an upper reflector part of the lighting chamber 28.
  • the hotplate is clamped downwards by a central bolt 25, which engages with its nut 26 on the bowl-shaped housing 27 of an illumination chamber 28, which together with a lamp 29 forms an illumination means 30.
  • the housing 27 also forms the anti-rotation device for the hotplate 14 by means of an anti-rotation pin 31 engaging in a recess in the housing 27 (FIG. 3).
  • the housing is circular with a funnel-like extension, at the end of which the lamp 29 is arranged with the axis of illumination pointing towards the center of the hotplate (FIG. 2).
  • the lamp axis points upwards at a slight angle (Fig. 3), and the housing bottom rises from the lamp at an angle upwards.
  • This design can be modified in many ways for optical and installation reasons.
  • the housing 27 is part of a substructure for supporting the hard glass plate 12, i.e. a sheet arranged under the hard glass plate, from which the lighting chambers 28 are formed. If the lighting chambers are arranged individually, they can also be produced individually, so that they are then supported with flanges 32 on the underside of the mounting plate 12, with such a radial distance that, as shown in FIGS. 3 and 4, an edge region 33 of the Mounting plate 12 around the hotplate 14 is covered by the lighting chamber 28.
  • the tempered glass mounting plate 12 is provided with a correspondingly baked-in, heat-resistant coating with light influencing means 34, 35 (indicated in FIG. 4), which on the one hand forms a decor (even if it is only smooth black) and on the other hand represents a masking that is in the edge area 33 generates a pattern 36, which runs at the desired locations, but preferably all around the hotplate, and can be designed differently, for example as a smooth ring or irregular radiation star according to FIG. 1.
  • the hard glass plate can also be colored.
  • the masking 35 can also be carried out by the edge 37 of the lighting chamber.
  • the lamp 29 can be a conventional electric lamp with a heat-resistant socket (oven lamp) which contains a small halogen lamp. It can be exchanged from the underside of the cooker and is electrically connected to the hotplate switches or controllers 39, which can be actuated by adjusting buttons 40 and switch on the lamp in the desired operating state, in the simplest case when the hotplate is switched on and off again when switched off. For this purpose, switches and controllers contain signal contact paths. A connection to temperature sensors (not shown) on the hotplate or in the vicinity thereof is possible for temperature display by the lighting device.
  • FIG. 5 shows an embodiment with a hard glass mounting plate 12, in which the hotplate 14 is installed in the enlarged recess 13 of the mounting plate 12 by means of a very wide sheet metal mounting ring 19a.
  • the ring is supported on the glass plate by means of a seal, the mounting ring 19a delimiting the inner region of the illuminated edge region 33 and thus the pattern 36, as in FIGS. 1 to 4, while in the present case the outer edge 37 also delimits the pattern Outside edge determined.
  • the hard glass plate does not need to be particularly masked, provided that it is somewhat translucent overall, but preferably not clearly transparent.
  • FIGS. 6 to 9 show different sealing profiles in connection with a hotplate 14 of the type described above and an installation ring similar to FIG. 5.
  • the sheet metal ring which is wide and flat between 1/20 and 1/5 of the hotplate diameter, is pressed onto the hotplate edge 18 and is supported a flange 41 and has a cross-sectional shape with an outer and inner bead 42, 43, between which a central depression 44 is located.
  • the flanged outer edge 21 is supported on a seal 45, which is made of an elastic, heat-resistant transparent Material exists and thus forms a light passage means between the lighting chamber 28 of the type described above and the edge region of the mounting plate 12a surrounding the hotplate.
  • the transparent seal 45 is ring-shaped and has on the inside a light entry surface 28 facing the lighting chamber and on the outside a substantially vertical or oblique light exit surface 47.
  • the mounting plate 12a consists of a non-transparent material, for example of enamelled sheet metal.
  • the illuminated edge area here consists of the light exit surface 47, the seal 45 and a part of the mounting plate surface illuminated by it from above.
  • the lighting chamber 28 is formed directly from the material of the mounting plate 12a and thereby simultaneously forms a stiffening of the mounting plate and the necessary clamping and centering means for the hotplate 14.
  • FIGS. 7 to 9 show, in the rest of the same design as FIG. 6, other forms of transparent seals 45 which in FIG. 7 have a light entry surface 47 which is favorable for the illumination and in FIG .
  • the seal 45 also has a very large, favorably obliquely downward light entry surface 46 and fills the outer bead 43 of the mounting ring 19a and surrounds the edge 37a of the recess 13, so that there is a good centering of the seal and hotplate .
  • the recess 13 is formed by a depression in the mounting plate 12a which also forms the lighting chamber 28.
  • Fig. 10 shows the hotplate 14 with a mounting ring 19, which rests on a glass ring 45a, which has an annular disk-shaped profile with an inclined outer edge 49 and an upwardly directed inner bead 50, which is adapted to the cooperating slope of the mounting ring 19.
  • the ring 45a lies on the mounting plate 12b, which likewise consists of sheet metal and extends to the inside of the ring, but contains openings 51, which are covered by the ring 45a, in accordance with the desired lighting pattern.
  • the light can penetrate directly out of the lighting chamber 28 through the openings 51 and the ring 45a, and the ring 45a thus illuminated forms the illuminated edge area and thus the display device.
  • the light passage means is therefore advantageously formed by partially transparent built-in elements.
  • the lighting chamber is formed by a separate housing 27 in the form of a shell supported on the underside of the mounting plate 12b.
  • the invention creates a sensible display which promotes ease of use and safety for any type of hotplate. It is also suitable for differentiating different types of hot plates from one another, for example by means of a display ring for normal hot plates and a radiation ring, changed light color or pulsating Light for increased performance hot plates. The invention also avoids errors in the assignment between the adjusting knob and the hotplate.
  • the lighting chamber 28 has a somewhat deeper bowl shape with an upper and outer flange 60, an adjoining, approximately cylindrical jacket part 61 and a larger inclined intermediate wall section 62, which merges into a substantially horizontal, smaller bottom section 63, in which a fastening screw 65 engages in a depression 64. It is screwed into an intermediate piece 66 with a screw thread on both sides, which is screwed onto a central fastening bolt 25 of the hotplate.
  • reflector plates 67, 68 are arranged essentially horizontally, which cover the underside of the hotplate and the bottom section. They ensure a targeted back reflection of the light into the lighting chamber and also provide additional radiation thermal protection for the lighting device. They are attached to the fastening bolt 25 by nuts or the fastening screw 65.
  • the lighting flange 28 bears with its outer flange on a support plate 69, which lies under the glass mounting plate 12 and supports it.
  • a fastening tab 70 is punched out of this sheet and bent downwards, which is part of an anti-rotation device.
  • the flange 60 has three notches 72 on the circumference, for example (FIG. 12) which engage in the area of recesses 73 of the fastening tab 70 in the latter. Since the side 74 of the fastening tab 70 facing the hotplate is chamfered, it is thus possible to press the lighting chamber 28 from below between the fastening tab 70, whereby it deforms somewhat and finally engages with its cuts 72 in the recesses 73. It is thus secured against falling down.
  • Fig. 11 is indicated by dashed lines that in the event that a special ground connection between the support plate and the lighting chamber is necessary, this can be created by an additionally extended tab 75 on the mounting tab 70 which is screwed onto the lighting chamber.
  • an upwardly shaped mounting section 76 which interrupts the otherwise bowl-shaped shape of the lighting chamber 28 and is formed upwards almost up to the underside of the electric hotplate 14. It is so curved or semicircular that a lamp holder 77 can be arranged with an essentially horizontal axis 78 which is inclined slightly upwards towards the center of the hotplate.
  • the socket section has an opening 79 pointing towards the center of the hotplate, against which a flange 80 of the socket rests and is held by means of securing tabs 81. By turning the frame, these can be brought into the area of cutouts and the frame can be removed.
  • An incandescent lamp 82 (FIG.
  • the socket 15 is inserted into the socket, which may be covered by a cover glass 83 (FIG. 11), which can also be colored. It can be seen that the socket is on the side and essentially horizontal, but in the area of the hotplate is arranged below this, so that the lighting chamber need not be larger than a conventional holder bowl for the hotplate. Their beam direction directed in the middle produces illumination of the edge region 33 of the mounting plate 12 which is designed according to FIG. 4.
  • the socket is arranged so that the hotplate connection 84 extends over the socket area 76. It consists of a connecting plate 85 fastened to the underside of the hotplate, which protrudes laterally somewhat beyond the hotplate circumference and carries an insulating piece 86 there, in which connecting terminals 87 for hotplate feed lines are provided. From them lead wires 88 into the hotplate, which are passed through an insulating bushing 89 into the hotplate interior.
  • This arrangement not only simplifies the connection of the lighting means to the electrical feed lines by the shortest paths, but above all also ensures that the passage of light on the hotplate circumference is only obstructed in the socket area 76, where a certain cover anyway through the lateral connection 84 would be present.
  • the slightly oblique arrangement of the socket creates enough space to make the connection.
  • Hold-down sections 90 of the lighting chamber wall in the socket section area 76 engage over the insulating piece 86 and prevent it from being bent downwards, while an upper section of an opening 91 provided for the hotplate connection in the lighting chamber wall ensures that the connecting plate 85 does not rise too far is bent.
  • the uninsulated connecting wires 88 are guided with a sufficient insulation distance between the sheet metal parts surrounding them. It is also possible to interpose an insulating plate between them and the socket section 76.
  • the cooking device 11 is with his Built-in plate 12 built into a worktop, such as a kitchen table or cabinet, via a built-in frame 92.
  • the embodiment according to FIG. 13 differs from that according to FIG. 11 in that an installation plate 12a made of sheet metal is provided, from the material of which the lighting chamber 28 is formed downward.
  • An edge groove 94 in which a sealing ring 95 is located, is formed in the edge region of the lighting chamber 28. It seals a ring 45b designed as a tempered glass molded part, which is interposed between the mounting plate 12a and the mounting ring 19 of the hotplate 14.
  • Fig. 14 differs from Fig. 11 in that here a hotplate 14 is used with a larger scope. It can be seen that in the correspondingly larger lighting chamber 28, the lighting means and thus also the mounting section 76 receiving it moves further outward, so that a greater distance is created between the center pin 25 and the lighting means 30. In this case, it is possible, in addition to or instead of the reflector 67, to attach a lampshade 98 to the holder 77, which not only ensures good reflection conditions, but also shields the lamp from heat radiation from the hotplate.
  • the lamp holder 77 (shown without a cover glass). In this embodiment, it is fastened to the wall of the lighting chamber 28 with a screw 99 which is accessible from below, so that the socket for replacing the light bulb can be removed from the outside.
  • Fig. 16 shows a plan view of two hot plates of different sizes (e.g. right according to Fig. 11 and left according to Fig. 14).
  • the connection and socket areas can point towards the center, so that the connection axes 78 intersect (also from the two hot plates (not shown) of the cooking device 11).
  • the corresponding pattern 36 i.e. the translucent area of the otherwise masked mounting plate 12 is ring-shaped here and only on both sides of the axis 78, i.e. interrupted in the socket and connection area. However, it would also be possible to include this interruption in a pattern which, for example, consists of individual ring sections.
  • FIG. 17 shows an embodiment with a mounting plate 12a consisting of sheet metal, which forms an edge groove 94 due to a downward angular shape in cross-section.
  • a ring 45c is inserted by means of an adhesive sealant 100, which consists of a flat washer, ie a glass ring with flat upper and lower ring surfaces and essentially cylindrical inner and outer boundaries. It is easier to manufacture than a profile ring and forms an insert body in the mounting plate 12a, which essentially runs in its plane.
  • On the inside, it has an attached elastic ring 22, as was described with reference to FIG. 4, and is also in contact with a centering and shielding sheet metal ring 23.
  • the hotplate can be installed on the ring 45c in the same way as described in FIG.
  • the ring 45c can also be attached to the underside be provided with a mask 35.
  • the lighting chamber (not shown in FIG. 17) can be made in one piece with the plate 12a or can also be attached separately (as in FIG. 18).
  • FIG. 18 again shows an embodiment with a sheet metal mounting plate 12a and a glass intermediate ring 45b, as was described in FIG. 13.
  • the edge area surrounding the installation opening 101 has a double angular shape, which comprises an edge groove 94 with a sealing ring 95.
  • the lighting chamber 28 lies with its flange 60 outside of this stiffening edge formation on the underside of the mounting plate 12a.
  • FIG. 19 shows a circuit of the three heating resistors 102 of the electric hotplate 14 and of the lighting means 30. It is a clocked, power-controlled hotplate with a corresponding power control device 103, the clocking switching contact 104 of which is actuated by a bimetal 105, which is heated by a control heater 106 .
  • the electric hotplate is supplied via two supply lines 107, 108, the supply line 107 running directly to the corresponding connection terminal 87, while the supply line 108 runs to an additional temperature switch 109, which is located on the underside of the lighting chamber, i.e. outside the lighting room directly next to the socket area 76 or the connection area 84 is mounted.
  • the additional temperature switch detects the ambient temperature of the hotplate / lighting unit and ensures that the temperature in the outer area of the hotplate is kept at a value which is harmless to the surroundings, for example a wooden worktop 93 (FIG. 11).
  • internal temperature switches 110 can be provided, which switch off the heating resistors 102, which are otherwise connected in parallel to one another, individually or as a whole.
  • the hotplate connection runs from the temperature switch 109, which detects the outside temperature especially in the most critical area with a certain additional heating through the connection and the lighting means, to the other pole of the connection terminals 87, while one pole of the light bulb 82 is connected directly to the connection 108.
  • An independent return line 111 runs from the other lamp pole to the corresponding network pole.
  • the lighting means 30 is switched on when, by turning the switch 112 of the power control device 103, the manually operated contact 113 connects the supply line 108 to the household power supply 114. Irrespective of the clocking state of the power control device and the temperature limiter switching states, the lighting device is therefore always on when the hotplate is switched on. So it works as an operating display. If several hotplates are connected, a common return line 111 can be provided for all lighting devices. So only one additional line per cooking appliance is necessary.
  • the embodiment according to FIG. 20 differs from that according to FIG. 19 by an additional contact 115 in the power control device 103, by means of which the heating resistor 102a is switched on in an upper power range (with a 100% relative duty cycle of the contact 104), while the clocking switching contact 104 only operated two heating resistors 102.
  • the lamp is switched as an operating display by a corresponding circuit.
  • it could also react to the increased additional power by correspondingly changing its luminosity by appropriate wiring, for example switching on a diode.
  • FIG. 21 shows an embodiment corresponding to FIG. 11, but in which the socket section 76 is not formed on the wall of the lighting chamber 28, but is designed as a separate lighting insert 121 which is inserted into a cut-out opening 120 in the lighting chamber 28.
  • the lighting insert 121 shown individually in FIG. 22 contains a holding lug 122 on its side facing the hotplate center, with which it engages behind the edge of the opening 120. Two screws engage holes 123 and fix the insert. Hold-down sections 90 are provided to position the insulating piece 86. This version enables easy lamp replacement by expanding the lighting insert and also makes it easier to shape the lighting chamber as a stamped sheet metal part.
  • FIGS. 23 and 24 show two electric hot plates 14 which are installed in a mounting plate 12 made of any material, for example stainless steel sheet.
  • the installation opening 13 in the installation plate 12 is oval and preferably consists of two identical semicircular arches which are connected by straight sections (elongated hole shape).
  • An adapter means 150 which has a shape of glasses, is inserted on it.
  • the outer contour corresponds to the installation opening 13 and in each case a circular cutout 151 is provided centrally in the lateral circular arc sections for each electric hotplate.
  • the two electric hot plates 14 are supported on the adapter means 150 by means of outer, relatively flat and wide mounting rings 19.
  • the hot plates 14 are arranged close to one another. Since they are on a level with great reliability and also free from heat distortion and other tendencies to warp, namely the upper surface of the adapter means, the tempered glass, ie a particularly heat-resistant and heat-stress-free Material is there, their cooking surfaces 17 are exactly in a common plane, so that the double hotplate unit consisting of the two hotplates 14 and the adapter means 115 can be used for heating elongated cooking vessels, such as roasting pans, for heating serving plates etc.
  • this adapter creates the possibility of providing light passage means 38 as a window in a masking of the underside of the adapter means 50.
  • the lighting means are formed by a strip which runs around each of the hot plates, approximately over a three-quarter circle, and which is exposed in the central region 152, where the two hot plates 14 are closest.
  • the outer rim 153 which runs halfway around the hot plates, is designed to be as narrow as possible in terms of strength, but offers enough space for the arrangement of the light transmission means.
  • the adapter means 150 is installed in a frame-like depression 154 of the mounting plate 12 in such a way that the adapter surface 155 lies approximately in the plane of the mounting plate 12.
  • the installation can be done with the interposition of pasty sealing compounds etc.
  • the associated control and regulating devices 39 are installed somewhat elevated in the surface of the mounting plate 12.
  • the two adjusting knobs can be mechanically or electrically connected to one another in such a way that the hot plates can be operated independently of one another, but also jointly, in which case they are then kept at the same temperature and / or power level.
  • Fig. 24 shows that 30 halogen lamps are used as lighting means, which allow a low construction of the lighting chambers 28 and bring a high luminous efficiency.
  • the low voltage required by them is already present in the system in the case of electronic regulating or control devices.
  • the arrangement shown, in which the two lamps are arranged directly adjacent to one another under the central section 152, has the advantage of uniform illumination of the light transmission means 18 and a common central connection.
  • the lighting means are operated independently of one another, depending on which of the hot plates is switched on, so that the user can recognize which of the two hot plates or whether both are in operation together.
  • a hot display device for the hot plates, which can contain, for example, a temperature switch 156, which is thermally coupled to the hot plate body 15, but can optionally also contain additional heating for faster response.
  • This switch signals when the hotplate has reached a temperature that could make it dangerous to touch (70 - 110 ° C), both when heating up and when cooling down. It could be coupled to the lighting means 30, and this applies to all the illustrated embodiments, in such a way that at although the hotplate is switched off, but the hot display is appealing, for example by switching on a diode or the like. be operated with lower light intensity.
  • the display device thus also becomes a warning device.
  • FIG. 24 shows, for example, two different designs of the lighting chamber 28 and its housing 27. While in the hotplate shown on the right the housing has a substantially flat bottom and is fastened to a central eye 161 of the hotplate via a long bolt 25 with the interposition of a spacer sleeve 160, In the embodiment shown on the left, this is done in that the central region of the housing 27 is deformed conically upwards and is attached directly to the central eye 161 of the hotplate body 15 using a short screw 25a.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Electric Stoves And Ranges (AREA)
  • Control Of Resistance Heating (AREA)

Claims (15)

  1. Dispositif de cuisson électrique comportant au moins une plaque de cuisson électrique (14) qui présente une surface de cuisson non transparente (17), comportant également un plateau encastrable (12, 12a, 12b) qui présente au moins une découpe (13) destinée à recevoir la plaque de cuisson, un moyen d'éclairage (30) qui est disposé dans une chambre d'éclairage (28) sous le plateau encastrable (12, 12a, 12b), lequel est au moins réalisé par des parties d'une zone du bord de la face inférieure de la plaque de cuisson entourant la plaque de cuisson (14) pour éclairer et comporte des moyens pour le passage de la lumière (36, 45, 45a) pour laisser passer de la lumière dans la zone située au-dessus du plateau de montage, caractérisé en ce que les moyens pour le passage de la lumière (36, 45, 45a) se composent d'un matériau transparent tel que du verte ou un matériau semblable à du verte, entourent la plaque de cuisson (14) et ferment la zone située au-dessus du plateau encastrable (12, 12a, 12b) par rapport à celle située en dessous de ce dernier, et en ce qu'un anneau de montage (19, 19a, 20) entourant la plaque de cuisson (14) prend appui sur les moyens pour le passage de la lumière (36, 45, 45a).
  2. Dispositif de cuisson électrique selon la revendication 1, caractérisé en ce que la plaque de cuisson (14) comporte un corps de plaque de cuisson en métal coulé et en ce que l'anneau de montage (19, 19a) prend appui sur la zone du bord (33) de la découpe (13) du plateau encastrable (12, a, b) formant des moyens pour le passage de la lumière.
  3. Dispositif de cuisson électrique selon la revendication 1 ou 2, caractérisé en ce que les moyens pour le passage de la lumière incluent au moins dans la zone du bord (33) des parties transparentes (36) du plateau encastrable (12), lequel se compose, de préférence, de verte ou d'un matériau semblable à du verre qui contient notamment des moyens influençant la lumière (34, 35) tels que de la couleur et/ou un revêtement qui laissent apparaître, le cas échéant, des parties (36) sous forme d'un motif tel qu'un anneau ou une couronne de rayons ou analogues entourant la découpe (13).
  4. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce que le moyen d'éclairage (30) contient au moins une ampoule électrique (29) qui éclaire au moins une chambre d'éclairage (28), de préférence, en forme de coupe et qui présente notamment une zone entourant la plaque de cuisson (14) avec un écart constant, sachant que, de préférence, la chambre d'éclairage présente une zone s'étendant horizontalement à partir de la plaque de cuisson, à l'extrémité de laquelle est disposée une douille pour l'ampoule (29) et/ou à l'extrémité de laquelle la chambre d'éclairage (28) est appliquée avec son bord contre la face inférieure du plateau encastrable (12) ou, de façon particulièrement préférentielle, est formée dans le matériau du plateau encastrable (12, 12a) ou d'une sous-construction pour le plateau encastrable et contient, le cas échéant, des moyens de fixation (25, 26) pour fixer la plaque de cuisson électrique (14).
  5. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce que des composants transparents (45, 45a) sont disposés dans la zone du bord (33), lesquels présentent chacun des surfaces d'entrée et de sortie de la lumière (46, 47) en direction de la face supérieure et inférieure du plateau encastrable (12a) et sont notamment réalisés en tant que bague, par exemple en tant que bague d'étanchéité en un matériau élastique, transparent et résistant à la chaleur, bague en verte ou analogues, entourant la plaque de cuisson (14), sachant que la bague est, de préférence, située entre un anneau de montage en tôle (19a) entourant la plaque de cuisson (14), dont la largeur est comprise, de préférence, entre un vingtième et un cinquième du diamètre de la plaque de cuisson, et le plateau encastrable (12a) et/ou qu'elle a une surface pour la sortie de la lumière orientée essentiellement latéralement.
  6. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce que les moyens d'éclairage (30) et/ou les moyens pour le passage de la lumière (36, 45, 45a) présentent des propriétés de réflexion ou de conduite de la lumière qui provoquent une répartition de la lumière la plus uniforme possible sur le pourtour de la plaque de cuisson électrique (14), même lorsque les moyens d'éclairage ne sont disposés qu'à certains endroits ou de façon inégalement répartie.
  7. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce que les propriétés des moyens d'éclairage (30) telles que l'intensité lumineuse, la couleur de la lumière, la durée d'impulsion de la lumière et le type de lumière peuvent être modifiées, notamment en fonction de caractéristiques de fonctionnement de la plaque de cuisson telles que la position de fonctionnement, le réglage de la puissance, la température et la température de référence, sachant que, le cas échéant, est prévu un dispositif de commande dépendant de la température qui réagit à la température de la plaque de cuisson électrique et qu'en fonction de cela, les propriétés peuvent être modifiées.
  8. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce que le plateau encastrable (12, 12a) est composée d'un matériau opaque et en ce que dans la zone du bord (33) est placée une surface pour la sortie de la lumière (47) des moyens pour le passage de la lumière (45, 45a), qui est située au-dessus du plan du plateau encastrable (12, a, b) et éclaire notamment des parties de la surface du plateau encastrable.
  9. Dispositif de cuisson électrique selon l'une des revendications 4 à 8, caractérisé en ce que, dans une zone (76) située latéralement sous la plaque de cuisson (14), une douille (77) pour l'ampoule (29) est disposée de façon horizontale ou légèrement inclinée, en pointant vers le milieu de la plaque de cuisson, dans une zone de la douille (76) se logeant dans la forme de coupe de la chambre d'éclairage (28), sachant que, de préférence, la zone de la douille (76) est disposée sous une zone de raccordement (84) de la plaque de cuisson (14) dans laquelle sont guidés les câbles de raccordement électriques (88) de la plaque de cuisson (14) qui sortent de la chambre d'éclairage (28) et/ou en ce que dans la zone de la douille (76), est placé de façon amovible un dispositif d'éclairage séparé (121) portant une douille (77) et logé dans une ouverture (120) de la paroi de la chambre d'éclairage (28).
  10. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce que la chambre d'éclairage (28) est fixée au moyen d'un dispositif de fixation encliquetable (72, 73) qui contient, de préférence, des éléments de protection contre la torsion (71).
  11. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce que dans la chambre d'éclairage (28) sont disposés des disques réfléchissants (67, 68) essentiellement horizontaux qui sont, de préférence, disposés sur un boulon central de fixation (25) de la plaque de cuisson (14).
  12. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce qu'un anneau (45c) réalisé, de préférence, essentiellement en forme de rondelle est logé dans un logement (94) d'un plateau de cuisinière (12a) qui l'entoure, le cas échéant en y intercalant des moyens d'étanchéité ou de collage (100) et est, de préférence, muni d'un profilé élastique (22) sur un bord intérieur.
  13. Dispositif de cuisson électrique selon l'une des revendications précédentes, caractérisé en ce qu'au moins deux plaques de cuisson électriques (15) sont montées de façon très rapprochée dans un moyen de raccord (150) qui, quant à lui, peut être encastré dans un plateau encastrable (12) et se compose d'un matériau très résistant à la déformation, de préférence, semblable à du verte, sachant que les surfaces de cuisson (17) des plaques de cuisson (14) se situent dans un même plan.
  14. Dispositif de cuisson électrique selon la revendication 13, caractérisé en ce que le moyen de raccord (150) présente une limite extérieure ovale avec deux ouvertures de montage circulaires (151) pour deux plaques de cuisson (14), sachant que, de préférence, les plaques de cuisson (14) peuvent être actionnées ou réglées individuellement ou ensemble.
  15. Dispositif de cuisson électrique selon la revendication 13 ou 14, caractérisé en ce que dans la zone du bord des plaques de cuisson (14) sont prévus des moyens pour le passage de la lumière (38) et en ce que les moyens d'éclairage (30) sont réalisés de façon à pouvoir indiquer différents états de fonctionnement de l'une des plaques de cuisson (14) ou de plusieurs d'entre elles, sachant que, de préférence, sont prévus des moyens d'éclairage (30) séparés ou pouvant être actionnés séparément sont prévus pour chacune des plaques de cuisson (14).
EP19900125374 1990-01-17 1990-12-22 Dispositif de cuisson électrique pour au moins une plaque de cuisson Expired - Lifetime EP0437826B1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT9090125374T ATE104758T1 (de) 1990-01-17 1990-12-22 Elektrokocheinrichtung fuer wenigstens eine elektrokochplatte.

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US46651390A 1990-01-17 1990-01-17
US466513 1990-01-17
DE9004485U 1990-04-19
DE9004485U DE9004485U1 (fr) 1990-01-17 1990-04-19

Publications (3)

Publication Number Publication Date
EP0437826A2 EP0437826A2 (fr) 1991-07-24
EP0437826A3 EP0437826A3 (en) 1992-02-19
EP0437826B1 true EP0437826B1 (fr) 1994-04-20

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Application Number Title Priority Date Filing Date
EP19900125374 Expired - Lifetime EP0437826B1 (fr) 1990-01-17 1990-12-22 Dispositif de cuisson électrique pour au moins une plaque de cuisson

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EP (1) EP0437826B1 (fr)
AU (1) AU6945291A (fr)
CA (1) CA2034185A1 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4105627A1 (de) * 1991-02-22 1992-08-27 Mmg Minnahuette Masch Glas Leuchtring zur kennzeichnung des kochfeldes bei glaskeramikabdeckungen an elektroherden
GB2301760B (en) * 1995-06-01 1999-09-22 Ceramaspeed Ltd Electric heater
US7554060B2 (en) * 2006-09-29 2009-06-30 England Raymond O Displaying cooking-related information
DE102011083459A1 (de) * 2011-09-27 2013-03-28 BSH Bosch und Siemens Hausgeräte GmbH Bedienvorrichtung für ein Haushaltsgerät sowie Haushaltsgerät

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2346237A (en) * 1941-06-07 1944-04-11 Gibson Refrigerator Co Electric range
US2492100A (en) * 1946-04-20 1949-12-20 Arthur H Kitson Terminal block and safety light for electric surface cooking units
DE1949906U (de) * 1964-01-09 1966-11-17 Walter Altmann Signaleinrichtung fuer elektrische kuechenherde zum anzeigen des betriebszustandes der kochstellen oder der bratstelle.
DE3722632A1 (de) * 1987-07-09 1989-01-19 Licentia Gmbh Glaskeramikkochflaeche bzw. kochmulde

Also Published As

Publication number Publication date
AU6945291A (en) 1991-07-18
EP0437826A2 (fr) 1991-07-24
CA2034185A1 (fr) 1991-07-18
EP0437826A3 (en) 1992-02-19

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