EP0788293A2 - Radiateur électrique avec un capteur actif pour la détection d'un récipient de cuisson - Google Patents

Radiateur électrique avec un capteur actif pour la détection d'un récipient de cuisson Download PDF

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Publication number
EP0788293A2
EP0788293A2 EP97100766A EP97100766A EP0788293A2 EP 0788293 A2 EP0788293 A2 EP 0788293A2 EP 97100766 A EP97100766 A EP 97100766A EP 97100766 A EP97100766 A EP 97100766A EP 0788293 A2 EP0788293 A2 EP 0788293A2
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EP
European Patent Office
Prior art keywords
sensor
radiant heater
heater according
loop
sensor loop
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.)
Granted
Application number
EP97100766A
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German (de)
English (en)
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EP0788293B1 (fr
EP0788293A3 (fr
Inventor
Martin Gross
Nils Platt
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 Geratebau GmbH
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Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH
Priority to EP99123892A priority Critical patent/EP0982973B2/fr
Priority to EP03022466A priority patent/EP1379105A3/fr
Publication of EP0788293A2 publication Critical patent/EP0788293A2/fr
Publication of EP0788293A3 publication Critical patent/EP0788293A3/fr
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Publication of EP0788293B1 publication Critical patent/EP0788293B1/fr
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    • 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
    • H05B3/746—Protection, e.g. overheat cutoff, hot plate indicator
    • 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
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05—Heating plates with pan detection means

Definitions

  • the invention relates to an electric radiant heater with an active sensor for detecting the positioning of a cooking vessel on a hotplate covering the radiator, in particular a glass ceramic plate.
  • the single-winded pot detection loop mentioned has become known from DE 37 11 589 A1. It is a passive short circuit loop, which is arranged between the heating elements and a glass ceramic plate. It is externally acted upon by a magnetic field transmitter arranged below the heating elements. The evaluation circuit is acted on by periodic short-circuiting and a corresponding damping measurement.
  • the introduction of such a system in practice fails due to the great effort and, above all, the large height required to accommodate the magnetic field sensor.
  • the mentioned multi-wind coils in the outer edge area cause thermal problems and, as was recognized according to the invention and as will be explained later, are less suitable with regard to a sharp signal generation and detection.
  • the object of the invention is to provide a radiant heater with an active sensor which, with a simple and robust sensor structure, delivers the most concise signal possible for controlling the heater.
  • the sensor which is part of an inductive, preferably by means of detuning resonant circuit of a control system, is circumferential as a loop made of electrically conductive material in the area of the heating zone and is arranged at least partially overlapping it.
  • the signal becomes significantly more meaningful for the coverage of the heating zone and thus for the detection, compared to a sensor rotating around the edge of the radiator.
  • This is unusual in that one should assume that the associated cooking vessel size would be detected particularly precisely by a sensor arranged on the edge, because the signal size in the form of the relative frequency shift in the edge area is particularly large and then drops sharply (parabolically) towards the center.
  • the bottom of the plate plate also dampens the magnetic field, so that it can only be formed as a hose around the actual sensor conductor in a relatively small space.
  • the sensor loop By arranging the sensor loop in the area of the heating zone, the greatest possible coverage of the sensor can be achieved in the area in which the pot is to switch on and the least possible coverage in the area in which the heating element in question is to be switched off. Therefore, even a small pot with a correct centric arrangement gives a large signal, while a displaced pot only delivers a small signal that can be clearly distinguished from it.
  • the sensor loop should therefore have its effective diameter in the range of the minimum diameter, advantageously a little above it, specifically around the area of the magnetic field "hose". As a result of the distance to the outer edge, there is no appreciable damping by this, which would fake a pot, so to speak.
  • the invention therefore advantageously makes it possible to arrange the sensor loop in the immediate area of the heating zone, ie, directly exposed to the radiant heat, because insulation is not necessary in the case of such a coil with one or only small turns with an air gap therebetween.
  • It can consist of a design-resistant, self-supporting and temperature-resistant conductive material, preferably solid, strong wire.
  • a material like a comes in as a material high-alloy steel, for example a FeCrNi alloy in question.
  • non-ferromagnetic material is expedient because in the case of a ferromagnetic material the Curie point would be exceeded as a result of the high temperature occurring and the changing magnetic properties in this point would lead to a signal which is completely different from the desired determination of a cooking vessel position is independent and would therefore falsify the result.
  • the sensor loop and the control can advantageously be designed for cooking vessel size detection.
  • the sensor loop can have different effective ranges at a radial distance from one another, e.g. in different circumferential areas, essentially loop sections running in the circumferential direction, which are connected to one another by radial connecting sections.
  • a sensor loop with a circular or polygonal shape with omega-shaped bulges can result. This cloverleaf shape has been recognized as particularly effective.
  • the characteristic curve “frequency deviation / diametrical coverage by the cooking vessel” has a stepped course with a steep section shifted more towards the interior of the heating zone, which can have two diameter levels for dual-circuit radiators. In this way, the signal curve can be more closely adapted to the ideal shape. In the case of radiators with only one heating zone, this would be a flat signal curve in the edge area, a steepest possible drop in the area of the diameter of the smallest possible pot, which should still lead to switching on, and then a flat, as deep as possible curve to the middle of the heating zone.
  • the robust, self-supporting sensor loop can be easily arranged in any radiator configuration. These usually have an outer edge made of insulating material and, in the case of dual-circuit radiators, an intermediate wall if necessary.
  • the sensor loop can rest on this, for which recesses can be provided in order to establish a contact of the sensor and the insulating edge on the plate or a certain, but only a small distance from, the plate. Retrofitting with pan detection is also possible with existing radiator designs.
  • FIG. 1 and 2 show an electric radiant heater 11, which is arranged under a glass ceramic plate 12 of an electric hob or other radiation cooker is. It has a flat sheet metal plate 13, the bottom 14 and edge 15 of which receive a bottom layer 16 and an edge 17 made of electrically and thermally insulating and insulating heat-resistant insulating material. It is preferably a microporous pyrogenic silica airgel pressed from bulk material.
  • the outer edge 17 is made separately for improved mechanical strength and consists of a pressed or wet-formed and then post-dried ceramic fiber with binders, etc.
  • the sheet metal edge 15 does not reach all the way to the glass ceramic plate 12, but the insulating edge 17, which is pressed onto the glass ceramic plate from below by the heating element 11 being pressed upwards by a pressure spring (not shown).
  • the radiant heater has two heating zones 18, 19 which are concentric with one another and which are delimited from one another by an intermediate wall 20, but which do not reach as far as the glass ceramic plate.
  • electrical heating elements 21 are arranged in the form of thin, wavy, deformed strips, which are arranged upright on the surface 22 of the insulating body 16 and are anchored therein with feet formed on their underside, which as a result of the corrugation of the strip have a spade shape. They cover the two heating zones 18, 19 evenly, with the exception of an unheated central zone 59, in which an upward projection 43 of the insulating base 16 lies.
  • Fig. 2 shows the arrangement of the heating elements in meandering ring tracks. They are connected via heating element connections 23 a temperature monitor 24 and a separate terminal block 25 switched so that the outer heating zone 19 of the heating zone 18, which is constantly switched on when the radiator is in operation, can optionally be switched on.
  • the temperature monitor 24 has a rod-shaped sensor 26 which acts on a temperature monitor / contact to maintain a permissible maximum temperature on the underside of the glass ceramic and a hot detector contact for signaling the hot state of the radiator in a temperature monitor head 27.
  • the sensor 26 projects through the edge 17 of the insulating body and through the intermediate wall 20 and runs in a plane above the heating elements 21, but largely in an alley 28 free of heating elements.
  • the heating element has a sensor in the form of a loop 30, which is part of a control 31 for detecting the positioning of a cooking vessel on the hotplate 12 covering the heating element.
  • the sensor loop 30 forms an inductance of an oscillating circuit 32 which is excited with a relatively high frequency of, for example, 1 MHz to 5 MHz.
  • a cooking vessel is placed on it, the damping of the sensor loop 30 and thus the frequency of the resonant circuit 32 change. This is evaluated in the controller 31 and, depending on this, mechanical or electronic switches 33, 33a are controlled in the controller, which switch the heating zones 18, 19 to Switch on operation.
  • an energy control device 34 (often also referred to as an energy regulator) is also provided, which can be set to a specific power via an adjustment button 35.
  • a temperature controller can also be provided.
  • the regulation or control is usually an intermittent power release, that is to say intermittent regulation or control.
  • the Energy control device 34 can be designed thermo-mechanically, ie as a bimetal switch or, preferably, as an electronic component, which can optionally also be integrated in the controller 31.
  • the line between the actual sensor loop 30 and the other elements of the resonant circuit should be kept as short as possible. Shielding of the cables is also possible.
  • the component 36 of the control system that contains the actual cooking vessel recognition could also be arranged separately from the rest of the radiator control system, spatially close to the radiant heater 11.
  • the sensor loop 30 consists of a relatively thick round wire with a diameter between 1 and 4 millimeters, preferably about 2 millimeters, made of a heat-resistant and non-magnetizable material.
  • This can be, for example, a high-alloy steel such as an iron-chromium-nickel alloy. Suitable materials are e.g. a steel with material no. 1.4876 or a heating conductor material with the material no. 2.4869.
  • the sensor can be grounded on one side.
  • it can be made correspondingly thick.
  • an electrically highly conductive galvanic coating e.g. made of silver, or a version made of solid, highly conductive material with e.g. galvanic, scaling-resistant coating.
  • the very rigid design of the sensor loop 30 ensures that a drop on the heating elements 21 is not to be expected even under high thermal stresses.
  • the sensor loop forms a single-winding coil with outer peripheral sections 37 running over the outer heating zone 19, but with a relatively large radial distance from the outer edge 17 and, again with a radial distance from the intermediate wall 20, inner peripheral sections 38 running over the heating zone 18.
  • These circumferential sections are circular arc sections of different diameters in FIG. 2, which are connected to one another by connecting sections 39. Although these connecting sections run essentially radially, they are inclined such that the sum of the angles of the outer and inner peripheral sections 37, 38 is greater than 360 °.
  • the top view of the sensor loop 30 has the basic shape of a three-leaf clover with a relatively large, almost full circle central region and three lateral "leaves" in the form of a triangular sector or omega. Depending on the size and control requirements, more peripheral section sectors can also be provided. Connections 41 in the form of outwardly directed, mutually parallel sections of the loop material are provided on one of the peripheral section sectors 40.
  • the entire sensor loop 30 with the shape described is flat and, due to the relatively strong material, self-supporting and dimensionally stable. It lies in the present example on the one hand in the area of the connections 41 in shallow depressions of the outer edge 17 of the insulating body and, moreover, is supported with its connecting sections 39 on the intermediate wall 20, which does not quite reach the glass ceramic plate.
  • the sensor loop is arranged close to or at a short distance from the underside of the glass ceramic plate 12 and with a safety distance above the heating elements 21. It can be seen that the sensor 26 of the temperature monitor, as a result of the arrangement shown, passes under the sensor loop only once, specifically in the area of an inner circumferential section 38.
  • FIG. 2 shows a two-circuit heating element with two concentric heating zones 18, 19
  • FIG. 4 shows a two-circuit heating element with an overall elongated oval shape.
  • this radiant heater 11 has a circular main heating zone 18, which is adjoined on one side by an intermediate wall 20 and is joined by an additional heating zone 19 which has a crescent or quarter moon shape.
  • a temperature monitor 24 is provided obliquely on the main heating zone 18 and its sensor 26 projects radially only approximately to the middle thereof, where it rests on a central projection 43 in the unheated central zone 59 of the insulating body base 16.
  • the sensor loop 30 provided for this radiant heater is made of the same material as that according to FIGS. 1 and 2. It has the shape of a quadrilateral, which consists of rectilinear circumferential sections which form connections 41 which lead out parallel in the region of the longitudinal center line 44 of the radiator.
  • the corners 46 of the quadrilateral lying in the area of the transverse center line 45 of the main heating zone 18 lie in corresponding shallow depressions 47 of the outer edge 17 of the insulating body, but within the edge of the sheet metal shell 15 of the radiator and thus have an effective diameter lying in the area of the heating zone 18.
  • a connecting section 39 is connected with a strong bend to the outside, which extends to outer corners 48, which, like the corners 46, on the
  • outer corners 48 which, like the corners 46, on the
  • the outer edge 17 of the insulating body rests in corresponding depressions. They are connected to one another by a straight section 37a in the exemplary embodiment, which crosses essentially centrally to the additional heating zone 19 and extends transversely to the longitudinal center line 44.
  • This section could also be rounded according to the crescent shape of the additional heating zone 19.
  • the sensor loop 30 thus rests at a total of seven locations on the insulating body, specifically at the corners 46 and 48, at the connections 41 and, with their inner corners 49 between the square legs 38a and the connecting sections 39, on the intermediate wall 20.
  • Their basic shape is like that of a stylized fish.
  • FIG. 9 corresponds approximately to that according to FIG. 2, but with straight circumferential sections 37, 38 instead of the arcuate embodiment shown in FIG. 2.
  • the circumferential sections 39 are largely radially directed and do not have as much retrospective influence as in FIG. 2.
  • This embodiment has a slightly lower level of signal levels than FIG. 2 because of the deviation from the theoretical ideal shape of the circle (or the pot shape) however easier to manufacture.
  • FIGS. 5 to 7 are intended for single-circuit radiators, i.e. Radiators that have only one coherent and always operated heating zone 18.
  • the sensor loop 30 in FIG. 5 has the shape of a square with corners 46 supported on the edge 17.
  • the sensor 46 of the temperature monitor 24 projects essentially diagonally over the field delimited by the sensor.
  • FIG. 6 An embodiment corresponding to FIG. 5 is shown in FIG. 6, but in which the sensor 26 of the temperature monitor 24 is flanked on both sides by straight sections of the sensor loop 30. These are connected to one another behind the free end of the temperature sensor 26. This makes it possible to run the temperature sensor and the sensor loop in the same plane, which helps to reduce the overall height with sufficient electrical clearances.
  • FIG. 7 shows a particularly preferred embodiment of the sensor loop 30, which has circumferential sections 37, which run at a distance from the edge 17 and form an almost full circle, and which are directed outward only through the connections 41 which are led out parallel to one another and are shaped like a cat's ear Corners 46a are interrupted, which ensure the necessary support on the outer edge 17.
  • FIG. 8 shows a sensor loop 30 for a two-circuit heating element, which lies in the region of the partition 20 between the main heating zone 18 and the additional heating zone 19 surrounding it.
  • the essentially square design similar to FIG. 5 of the loop is much smaller and extends with the outer corners into the area of the additional heating zone, while the peripheral sections 38a sweep over the outer of the main heating zone 18.
  • Fig. 10 shows an embodiment for a two-circuit radiator which, in contrast to the other radiators, which essentially consisted of a single-wind loop, forms a double loop, but which is connected in parallel.
  • the shape is that of two nested squares, both of which are connected to the same connections 41 and only have circumferential sections spaced apart from one another to increase their surface coverage, but each electrically form a single-winding loop.
  • the inner of the two loops, as described in FIG. 8, lies on the intermediate wall 20, while the outer loop, according to FIG. 5, rests with its corners on the outer edge 80.
  • the relatively stable but elastic design of the sensor loop also makes it possible e.g. securely by snapping into recesses in the edge. It can also be determined by inserting it into the insulating material, e.g. with welded-on pins is possible.
  • the desired power level is set on the adjusting knob 35 and the controller 31 including the cooking vessel detection 36 is thus also put into operation.
  • This cooking vessel detection works inductively, i.e. the resonant circuit 32 is excited with a relatively high frequency between 1 MHz and 5 MHz and the evaluation of the pot detection described below in its result is constructed in a manner known per se. For details, reference is made to European patent application 0442 275 A2.
  • an alternating electromagnetic field is generated around the wire of the sensor loop 30, the properties of which also determine the frequency of the resonant circuit.
  • this magnetic field is changed, i.e. the sensor loop is damped, as a result of which the frequency of the resonant circuit 32 changes.
  • This frequency change is evaluated in the pot detection component 36 and, when a preset threshold value is reached, one or both switches 33, 33a are switched on, so that the heating elements 21 are now flowed through and heated accordingly.
  • the diagram in FIG. 3 shows the relative frequency response df over the diameter, ie the frequency change df in percent of the maximum frequency change during the measurement depending on the diameter coverage of the hotplate and thus the sensor loop through a cooking vessel.
  • the diagram shows the cross section of the radiator 11 according to FIG. 1 for illustration.
  • the diagram shows the following: if a conventional sensor coil which is arranged in the edge 17 is used, the course of the frequency change over the diameter, shown as a dash-dotted line 52, would result.
  • the signal value added up over the circumference would be practically proportional to the coverage of the circumference.
  • a large pot 51a placed exactly in the center would therefore give a good signal, but a somewhat smaller pot, despite precisely central overlap, would not give a reasonably usable signal.
  • the switching threshold were to be set significantly below 50% of the total signal size, on the one hand the signal noise, which is relatively large with such sensors and their arrangement, would make a circuit unreliable and, on the other hand, an eccentric (shifted) pot (see double dash-dotted lines) Line 51b in FIG. 2) already leads to an undesired activation.
  • the ideal curve shown in FIG. 3 with a solid line has two stages, namely the upper stage 54, which corresponds to the large pot 51a covering both heating zones 18, 19 and is intended to switch on both heating zones 18, 19 and a lower stage 55, for example at 50% of the frequency difference df .
  • the area of this step which corresponds to the diameter of the small pot 51, only the central main heating zone 18 should be switched on alone, while at the left end of the step 55, which indicates the minimum pot diameter for the central heating zone, the signal should drop rapidly.
  • the curve 56 generated by the sensor loop 30 approximates this theoretical ideal curve 53 in that, although it generally has a largely linear course, that is to say the signal size is largely proportional to the covered diameter, it does, however, correspond to the step shape of the ideal curve contains approximate levels. This makes it possible to reliably distinguish large from small pots with just one sensor and, above all, to differentiate between a displaced pot that is supposed to switch on and a small pot that is to start the central main heating zone.
  • the switchover points 57, 58 are shown in the diagram in FIG. 3. At point 57 (signal level S1), only the central heating zone 18 should be switched on and remain switched on until switching point 58 (switch 33 "ON"). At switching point 58 (signal variable S2), the outer heating zone 19 is then switched on (both switches 33 and 33a "ON"). In other words: the switching point 58 symbolizes the smallest size of the large pot 51a, which is to work with both heating zones, while the switching point 57 indicates the smallest size of a pot 51, which is said to still lead to switching on.
  • the cooking vessel 51 shown in FIG. 1 is a pot, the diameter of which corresponds to that of the central main heating zone 18. It covers the area of the heating zone 18 and the corresponding area of the sensor loop 30, that is to say mainly the inner circumferential sections 38. This results in a signal level which is approximately in the area of the first stage 55 in the diagram in FIG. 3. So this signal lies between the signal values S1 and S2 given there, so that only the central main heating zone 18 is switched on.
  • the cooking mode takes place without any influence by the pot detection, either in a power-controlled or temperature-controlled manner and under the supervision of the temperature monitor 24, which protects the glass ceramic plate from overheating.
  • the function is comparable, only that instead of the concentric arrangement, the juxtaposition of the heating zones and their coverage by a correspondingly round or elongated cooking vessel (oval roaster) either only the main heating zone 18 or additionally the additional heating zone 19 is switched on.
  • a correspondingly round or elongated cooking vessel oval roaster
  • the stepped signal curve gives the option of switching depending on the diameter.
  • the signal curve is as shown in FIG. 11.
  • the ideal curve contains only one step 54 and also there the signal curve 56 of the sensor coil 30 according to the invention is largely adapted to this ideal curve, so that there is a steep signal curve for switching on and off at switching point 58 (smallest possible pot).
  • curve 52 of a conventional sensor coil the switching point would be in a range of signal sizes so small that no reliable switching would be possible.
  • the invention therefore provides a radiant heater with a pan detection sensor which is not only particularly simple, robust and can be retrofitted, but which also delivers a sharp signal that can be used for switching in a wide range. Above all, several effective areas for pot detection can be created, so that pots of different diameters trigger different heating. A real cooking vessel size detection is possible with a sensor. It would also be possible, albeit with more construction work, e.g. in dual-circuit radiators, to achieve with two sensors according to the invention, whereby compared to an arrangement of two conventional sensors in the outer and intermediate edge, both structural and above all functional advantages result.
  • the arrangement in the area of the heating zone itself results in a result provided with changes usable for switching over the diameter, which can be roughly approximated as linearized, but advantageously has the step or step characteristic shown in the diagrams in FIGS. 3 and 11.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Electric Stoves And Ranges (AREA)
  • Cookers (AREA)
  • Resistance Heating (AREA)
  • Control Of Resistance Heating (AREA)
EP97100766A 1996-02-05 1997-01-18 Radiateur électrique avec un capteur actif pour la détection d'un récipient de cuisson Expired - Lifetime EP0788293B1 (fr)

Priority Applications (2)

Application Number Priority Date Filing Date Title
EP99123892A EP0982973B2 (fr) 1996-02-05 1997-01-18 Capteur pour la détection d'un récipient de cuisson
EP03022466A EP1379105A3 (fr) 1996-02-05 1997-01-18 Capteur pour la détection d'un récipient de cuisson

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19603845A DE19603845B4 (de) 1996-02-05 1996-02-05 Elektrischer Strahlungsheizkörper mit einem aktiven Sensor zur Kochgefäßerkennung
DE19603845 1996-02-05

Related Child Applications (2)

Application Number Title Priority Date Filing Date
EP99123892A Division EP0982973B2 (fr) 1996-02-05 1997-01-18 Capteur pour la détection d'un récipient de cuisson
EP99123892.4 Division-Into 1999-12-02

Publications (3)

Publication Number Publication Date
EP0788293A2 true EP0788293A2 (fr) 1997-08-06
EP0788293A3 EP0788293A3 (fr) 1998-01-07
EP0788293B1 EP0788293B1 (fr) 2001-08-08

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ID=7784387

Family Applications (3)

Application Number Title Priority Date Filing Date
EP99123892A Expired - Lifetime EP0982973B2 (fr) 1996-02-05 1997-01-18 Capteur pour la détection d'un récipient de cuisson
EP97100766A Expired - Lifetime EP0788293B1 (fr) 1996-02-05 1997-01-18 Radiateur électrique avec un capteur actif pour la détection d'un récipient de cuisson
EP03022466A Withdrawn EP1379105A3 (fr) 1996-02-05 1997-01-18 Capteur pour la détection d'un récipient de cuisson

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EP99123892A Expired - Lifetime EP0982973B2 (fr) 1996-02-05 1997-01-18 Capteur pour la détection d'un récipient de cuisson

Family Applications After (1)

Application Number Title Priority Date Filing Date
EP03022466A Withdrawn EP1379105A3 (fr) 1996-02-05 1997-01-18 Capteur pour la détection d'un récipient de cuisson

Country Status (6)

Country Link
US (1) US5893996A (fr)
EP (3) EP0982973B2 (fr)
JP (1) JPH09223572A (fr)
AT (2) ATE204114T1 (fr)
DE (3) DE19603845B4 (fr)
ES (2) ES2162136T3 (fr)

Cited By (12)

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US6259069B1 (en) 1999-09-22 2001-07-10 Diehl Ako Stiftung & Co. Kg Apparatus for detecting the presence of a cooking vessel
EP1768258A2 (fr) * 2005-09-26 2007-03-28 E.G.O. ELEKTRO-GERÄTEBAU GmbH Circuit d'évaluation de l'êtat d'un capteur
DE10232710B4 (de) * 2001-08-28 2007-07-12 Cherry Gmbh Kochstelle mit Kochgefässerkennungssystem
EP1758431A3 (fr) * 2005-08-23 2009-01-07 E.G.O. ELEKTRO-GERÄTEBAU GmbH Plaque de cuisson commandée électroniquement comportant plusieurs feux et le procédé de commande de tels feux
EP2276322A1 (fr) 2009-07-16 2011-01-19 E.G.O. ELEKTRO-GERÄTEBAU GmbH Procédé de fonctionnement d'un champ de cuisson
DE102004059822B4 (de) * 2004-12-03 2011-02-24 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines Induktionskochfelds
DE102012201236A1 (de) 2011-02-25 2012-08-30 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätekalibriervorrichtung
DE102012200342A1 (de) 2012-01-11 2013-07-11 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Ansteuerung von mehreren Gasbrennern eines Gaskochgerätes
DE102013201070A1 (de) 2013-01-23 2014-02-06 E.G.O. Elektro-Gerätebau GmbH Verfahren und Vorrichtung zur Steuerung eines Garvorgangs
DE102012215744A1 (de) 2012-09-05 2014-03-06 E.G.O. Elektro-Gerätebau GmbH Bedienverfahren für ein Kochfeld und Kochfeld
DE102013218339A1 (de) 2013-09-12 2015-03-12 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Topferkennung und Gaskochfeld
EP3001771A1 (fr) 2014-09-29 2016-03-30 E.G.O. ELEKTRO-GERÄTEBAU GmbH Procédé de détection de l'identité d'un pot sur un point de cuisson d'une plaque de cuisson et système de plaque de cuisson avec un pot

Families Citing this family (50)

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DE19700753C2 (de) * 1997-01-11 2000-09-14 Schott Glas Kochfeld mit einer nicht-metallischen Kochplatte
DE19907596A1 (de) * 1999-02-22 2000-08-24 Patrick Leidenberger Selbst-Fokussierende-Herdplatte
GB2349471B (en) * 1999-04-27 2003-08-06 Ceramaspeed Ltd Electric heater assembly
DE19930830A1 (de) * 1999-07-03 2001-01-18 Dold Gmbh Mes Und Regeltechnik Verfahren und Sensoreinrichtung zur Erfassung der Größe einer Topfbodenfläche über einer Heizzone
US6184501B1 (en) * 1999-09-23 2001-02-06 Cherry Gmbh Object detection system
US6140617A (en) * 1999-10-22 2000-10-31 General Electric Company Cooktop control and monitoring system including detecting properties of a utensil through a solid-surface cooktop
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US6259069B1 (en) 1999-09-22 2001-07-10 Diehl Ako Stiftung & Co. Kg Apparatus for detecting the presence of a cooking vessel
DE10232710B4 (de) * 2001-08-28 2007-07-12 Cherry Gmbh Kochstelle mit Kochgefässerkennungssystem
DE102004059822B4 (de) * 2004-12-03 2011-02-24 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines Induktionskochfelds
EP1758431A3 (fr) * 2005-08-23 2009-01-07 E.G.O. ELEKTRO-GERÄTEBAU GmbH Plaque de cuisson commandée électroniquement comportant plusieurs feux et le procédé de commande de tels feux
EP1768258A2 (fr) * 2005-09-26 2007-03-28 E.G.O. ELEKTRO-GERÄTEBAU GmbH Circuit d'évaluation de l'êtat d'un capteur
EP1768258A3 (fr) * 2005-09-26 2009-04-29 E.G.O. ELEKTRO-GERÄTEBAU GmbH Circuit d'évaluation de l'êtat d'un capteur
EP2276322A1 (fr) 2009-07-16 2011-01-19 E.G.O. ELEKTRO-GERÄTEBAU GmbH Procédé de fonctionnement d'un champ de cuisson
DE102009034203A1 (de) 2009-07-16 2011-01-20 E.G.O. Elektro-Gerätebau GmbH Verfahren zum Betrieb eines Kochfelds
DE102012201236A1 (de) 2011-02-25 2012-08-30 BSH Bosch und Siemens Hausgeräte GmbH Hausgerätekalibriervorrichtung
DE102012200342A1 (de) 2012-01-11 2013-07-11 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Ansteuerung von mehreren Gasbrennern eines Gaskochgerätes
WO2013104498A1 (fr) 2012-01-11 2013-07-18 E.G.O. Elektro-Gerätebau GmbH Procédé de commande de plusieurs foyers gaz d'un appareil de cuisson au gaz
DE102012200342B4 (de) * 2012-01-11 2017-03-23 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Ansteuerung mehrerer Gasbrenner eines Gaskochfeldes
DE102012215744A1 (de) 2012-09-05 2014-03-06 E.G.O. Elektro-Gerätebau GmbH Bedienverfahren für ein Kochfeld und Kochfeld
EP2706816A1 (fr) 2012-09-05 2014-03-12 E.G.O. ELEKTRO-GERÄTEBAU GmbH Procédé de commande pour un champ de cuisson et champ de cuisson
DE102013201070A1 (de) 2013-01-23 2014-02-06 E.G.O. Elektro-Gerätebau GmbH Verfahren und Vorrichtung zur Steuerung eines Garvorgangs
DE102013218339A1 (de) 2013-09-12 2015-03-12 E.G.O. Elektro-Gerätebau GmbH Verfahren zur Topferkennung und Gaskochfeld
EP2863128A1 (fr) 2013-09-12 2015-04-22 E.G.O. Elektro-Gerätebau GmbH Procédé de reconnaissance de casserole et champ de cuisson
EP3001771A1 (fr) 2014-09-29 2016-03-30 E.G.O. ELEKTRO-GERÄTEBAU GmbH Procédé de détection de l'identité d'un pot sur un point de cuisson d'une plaque de cuisson et système de plaque de cuisson avec un pot

Also Published As

Publication number Publication date
DE19603845B4 (de) 2010-07-22
ES2162136T3 (es) 2001-12-16
ES2218941T3 (es) 2004-11-16
ATE263475T1 (de) 2004-04-15
DE59704217D1 (de) 2001-09-13
EP0982973A2 (fr) 2000-03-01
EP0788293B1 (fr) 2001-08-08
EP0982973A3 (fr) 2000-05-03
DE59711476D1 (de) 2004-05-06
EP1379105A2 (fr) 2004-01-07
DE19603845A1 (de) 1997-08-07
ES2218941T5 (es) 2009-06-01
US5893996A (en) 1999-04-13
EP0982973B1 (fr) 2004-03-31
EP1379105A3 (fr) 2004-11-03
EP0982973B2 (fr) 2009-02-11
ATE204114T1 (de) 2001-08-15
JPH09223572A (ja) 1997-08-26
EP0788293A3 (fr) 1998-01-07

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