EP1087640B1 - Pot presence and size detection - Google Patents
Pot presence and size detection Download PDFInfo
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- EP1087640B1 EP1087640B1 EP00119241A EP00119241A EP1087640B1 EP 1087640 B1 EP1087640 B1 EP 1087640B1 EP 00119241 A EP00119241 A EP 00119241A EP 00119241 A EP00119241 A EP 00119241A EP 1087640 B1 EP1087640 B1 EP 1087640B1
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- Prior art keywords
- heating element
- resistance heating
- cooking
- resonant circuit
- cooking plate
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- 238000001514 detection method Methods 0.000 title claims abstract description 20
- 238000010438 heat treatment Methods 0.000 claims abstract description 70
- 238000010411 cooking Methods 0.000 claims abstract description 45
- 239000003990 capacitor Substances 0.000 claims description 15
- 238000011156 evaluation Methods 0.000 claims description 12
- 239000002241 glass-ceramic Substances 0.000 claims description 5
- 230000001939 inductive effect Effects 0.000 claims description 4
- 239000000919 ceramic Substances 0.000 claims description 2
- 238000004804 winding Methods 0.000 claims description 2
- 238000010586 diagram Methods 0.000 description 5
- 239000004020 conductor Substances 0.000 description 2
- 239000013256 coordination polymer Substances 0.000 description 2
- 238000011161 development Methods 0.000 description 2
- 230000018109 developmental process Effects 0.000 description 2
- 238000010292 electrical insulation Methods 0.000 description 2
- 239000011888 foil Substances 0.000 description 2
- 230000005855 radiation Effects 0.000 description 2
- 238000000926 separation method Methods 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 230000006866 deterioration Effects 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 230000010355 oscillation Effects 0.000 description 1
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Classifications
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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
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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
- 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 a device for detecting the presence and / or the size of a cooking vessel on an electrically heated cooking plate according to the preamble of claim 1.
- EP 0 788 293 A1 describes an electric radiant heater with pan detection, in which an inductive sensor in the form of a loop of thick wire is used, which is mounted in the air space between heating conductor and hotplate and serves as an inductive element of a resonant circuit, the resonant frequency shifts when setting up a pot on the hotplate by changing the inductance of the wire loop.
- DE 196 46 826 A1 discloses a pot detection is disclosed in which capacitive sensors are used, which are formed by a plurality of electrodes, are also located between heating and cooking plate and with which an electrical resonant circuit is operated. When placing a pot on the hotplate, the capacity of these sensors and thus also the resonant frequency of the resonant circuit changes. Further arrangements of capacitive measuring electrodes for pot detection underneath glass ceramic cooking plates are described, for example, in DE 196 43 698 A1, DE 196 48 199 A1 and EP 0 652 688 A1.
- a cooktop in which a plurality of sensors are mounted to detect the footprint of different sized cooking vessels in the hob.
- a sensor capacitive the heat flow measuring, the radiation emanating from heating and hotplate radiation or ultrasonic sensors are provided.
- an electrical conductor is used as the sensor, which forms an open loop and is mounted between the heating element and the cooking plate. When placing a pot on the hotplate, the conductivity of this sensor changes.
- the present invention has the object to realize a simply constructed pan detection, which does not have the disadvantages mentioned above.
- the resistance heating element itself as a capacitive sensor for pot detection
- an additional sensor which would have to be accommodated in the system hotplate resistance heating, is not necessary.
- a deterioration of the electrical insulation system heating cooker is excluded from the outset.
- an air gap between the heating element and hotplate is not necessary, and the heating element can be brought into direct contact with the hotplate.
- the invention is designed so that the capacitance of the resistance heating element against a reference potential, preferably connected to earth, is connected in an electrical resonant circuit that the resonant frequency of this resonant circuit can be detected by an evaluation and so that the presence and / or size of a cooking vessel on the hotplate can be determined.
- the resistance heating element is preferably connected via electrical switching means, preferably throttles, to the heating voltage supply and connected via a further electrical switching means, preferably a separating capacitor, in the resonant circuit.
- the resonant circuit includes the resistance heating element, the separation capacitor, an inductive element, preferably a coil, and the reference potential.
- a capacitor is connected between the electrical terminals of the resistance heating element.
- multi-circuit hotplates can be used in a further development of the invention, several resonant circuits, in each case the heating element forming the corresponding heating circuit is used as a capacitive sensor for pot detection.
- the cooking plate made of ceramic or glass ceramic, that the resistance heating element is a radiant heater, a foil heater or a heating layer applied to a carrier or heating track and that the resistance heating element has line windings or a flat band.
- the size of a cooking vessel standing on the hotplate or the extent of the covering of the hotplate by a cooking vessel of the evaluation unit recognizable.
- the invention relates to a device for pot detection, which is not only determined whether a cooking vessel is on the hotplate or not, but also how much of the surface of the cooking plate is covered by a cooking vessel, whether a large or a small cooking vessel is on the hotplate and whether it is centrally or laterally shifted.
- a device for pot detection has a resistance heating element 1 located under an electrically heated cooking plate (FIG. 1). This is connected via two lines 2, 3 to an electrical Walkerwoodsmakers with 230 volts AC. In the lines 2, 3, two throttles DR1 and DR2 are connected. These have low impedance for the low-frequency heating voltage (50 or 60 Hz), thus allowing the heating current to flow almost unhindered.
- a coil L is connected at branch point 4 via a separator capacitor CN which, on the other hand, is connected to housing 5 and to ground connected is.
- the resistance heating element 1 or its capacitance to the grounded housing 5, the separating capacitor CN, the coil L and ground form a resonant circuit.
- the isolating capacitor CN has a very high impedance for low frequencies, but a very low one for high frequencies. This will prevent the low frequency 230 volt supply voltage from being shorted to ground. On the other hand, it allows high frequency currents, as they occur in such resonant circuits, happen almost unhindered. Thus, the separation capacitor CN effectively disconnects the oscillation circuit from the heating circuit.
- the chokes DR1 and DR2 have a high impedance for the high frequencies of the resonant circuit, so that these high frequencies can not get into the mains.
- a capacitor CP is connected on the side remote from the supply voltage of the chokes DR1 and DR2. This in turn has a very high impedance for the low-frequency supply voltage, so does not let the heating current through; However, it has a very low impedance for high frequencies (ie for those of the resonant circuit), thus allowing them to pass through unhindered.
- the interposition of the capacitor CP shows that both terminals of the resistance heating element 1 for the high frequencies of the resonant circuit are at the same potential and so the entire surface of the heating element 1 can be used as a capacitance-forming capacitor surface.
- FIG. 2 an equivalent circuit diagram of the resonant circuit of Fig. 1 is shown, which - as mentioned above - is separated from the low-frequency heating circuit.
- CH denotes the capacity of the heating element 1 to ground. This capacity CH changes - as will be explained in more detail below - when a cooking pot 6 is placed on the hotplate. This change in capacitance of CH also changes the resonant frequency of the resonant circuit.
- FIG 3 is outlined how the capacitance CH of the resistance heating element 1 is composed of earth.
- the heating element 1 is embedded in an insulating layer 7, in the housing 5.
- About the heating element 1 is a glass ceramic plate 8, on which the cooking pot 6 is.
- the resistance heating element 1 now has on the one hand a capacitance against the grounded housing 5, that is to earth. This capacity is designated CG.
- the heating element 1 but also has a capacity CT relative to the cooking pot 6.
- the cooking pot 6 in turn also has a capacity to earth, which is designated by CE.
- the evaluation unit (not shown) can pick up the voltage in the resonant circuit at the connection points A1 or A2 (in each case to ground) or between the points A3 and A4.
- the terminals A3 and A4 are connected to the two ends of a coil L ', which is coupled to the coil L of the resonant circuit.
- the evaluation of the signals thus transmitted in the evaluation unit takes place according to the general state of the art.
- the frequency of the resonant circuit can be determined by z. B. the vibrations are counted in a certain time interval.
- With the help of the size of the frequency change of the resonant circuit can be detected in the evaluation unit, how large the installed cooking vessel or how far a cooking vessel is pushed onto the cooking plate or pulled away from the cooking plate.
- the respective heating circuit can be used as a separate sensor and thus the size of the installed pot can be determined.
- a plurality of heating elements separated from the respective heating voltage supply via isolating capacitors to be connected together to form a capacitive sensor.
- the size of the installed pot is determined by the extent of the frequency change in the resonant circuit.
- the evaluation After detecting the conditions on the hotplate, the evaluation sends corresponding signals to a control unit for the hotplate, which then z. B. switches off the heater when no cooking vessel is on the hotplate, in the presence of a small pot turns on only the inner heating circuit, in the presence of a large pot both heating circuits turns on or off the heating even if the cooking vessel too far from the central position the cooking plate is pushed away.
- the control unit can also be set so that it ignores the signals of the evaluation of pan detection and controls the heating only according to preset settings
Abstract
Description
Die Erfindung betrifft eine Vorrichtung zur Erkennung der Anwesenheit und/oder der Größe eines Kochgefäßes auf einer elektrisch beheizten Kochplatte nach dem Oberbegriff des Anspruches 1.The invention relates to a device for detecting the presence and / or the size of a cooking vessel on an electrically heated cooking plate according to the preamble of
Solche Topferkennungs-Vorrichtungen sind weithin bekannt. So wird in der EP 0 788 293 A1 ein elektrischer Strahlungsheizkörper mit einer Topferkennung beschrieben, bei welcher ein induktiver Sensor in Form einer Schleife aus dickem Draht verwendet wird, die in dem Luftraum zwischen Heizleiter und Kochplatte angebracht ist und als induktives Element eines Schwingkreises dient, dessen Resonanzfrequenz sich bei Aufstellen eines Topfes auf die Kochplatte durch Änderung der Induktivität der Drahtschleife verschiebt.Such pan detection devices are well known. Thus, EP 0 788 293 A1 describes an electric radiant heater with pan detection, in which an inductive sensor in the form of a loop of thick wire is used, which is mounted in the air space between heating conductor and hotplate and serves as an inductive element of a resonant circuit, the resonant frequency shifts when setting up a pot on the hotplate by changing the inductance of the wire loop.
In der DE 196 46 826 A1 ist eine Topferkennung offenbart, bei welcher kapazitive Sensoren verwendet werden, die durch mehrere Elektroden gebildet sind, sich ebenfalls zwischen Heizleiter und Kochplatte befinden und mit denen ein elektrischer Schwingkreis betrieben wird. Bei Aufsetzen eines Topfes auf die Kochplatte ändert sich die Kapazität dieser Sensoren und somit auch die Resonanzfrequenz des Schwingkreises. Weitere Anordnungen von kapazitiven Messelektroden zur Topferkennung unterhalb von Glaskeramikkochplatten sind zum Beispiel in DE 196 43 698 A1, DE 196 48 199 A1 und EP 0 652 688 A1 beschrieben.In DE 196 46 826 A1 discloses a pot detection is disclosed in which capacitive sensors are used, which are formed by a plurality of electrodes, are also located between heating and cooking plate and with which an electrical resonant circuit is operated. When placing a pot on the hotplate, the capacity of these sensors and thus also the resonant frequency of the resonant circuit changes. Further arrangements of capacitive measuring electrodes for pot detection underneath glass ceramic cooking plates are described, for example, in DE 196 43 698 A1, DE 196 48 199 A1 and EP 0 652 688 A1.
In der DE 39 34 157 A1 ist eine Kochmulde beschrieben, bei der zur Erkennung der Stellfläche unterschiedlich großer Kochgefäße in der Kochmulde mehrere Fühler angebracht sind. Als Fühler sind kapazitive, den Wärmefluß messende, die von Heizung und Kochplatte ausgehende Strahlung messende oder UltraschallSensoren vorgesehen.In DE 39 34 157 A1 a cooktop is described in which a plurality of sensors are mounted to detect the footprint of different sized cooking vessels in the hob. As a sensor capacitive, the heat flow measuring, the radiation emanating from heating and hotplate radiation or ultrasonic sensors are provided.
Bei der in der EP 0 553 425 B1 offenbarten Topferkennung wird als Sensor ein elektrischer Leiter verwendet, welcher eine offene Schleife bildet und zwischen Heizelement und Kochplatte angebracht ist. Bei Aufsetzen eines Topfes auf die Kochplatte ändert sich die Leitfähigkeit dieses Sensors.In the pot detection disclosed in EP 0 553 425 B1, an electrical conductor is used as the sensor, which forms an open loop and is mounted between the heating element and the cooking plate. When placing a pot on the hotplate, the conductivity of this sensor changes.
In dem beschriebenen Stand der Technik sind für die Topferkennung stets spezielle Sensoren notwendig, welche in der Kochmulde bzw. zwischen Heizleiter und Kochplatte angeordnet sind. Diese Sensoren müssen so ausgebildet sein, daß sie die hohen Temperaturen der Kochzone vertragen. Darüber hinaus müssen Maßnahmen getroffen werden, daß diese Sensoren das elektrische Isolationssystem Beheizung-Kochtopf nicht stören. Zudem eignet sich eine Topferkennung mit solchen Sensoren nicht zur Verwendung bei Kochplatten, an deren Unterseite die elektrische Widerstandsbeheizung (über eine Isolierschicht) direkt anliegt, ohne daß ein Luftzwischenraum entsteht, in dem diese Sensoren untergebracht werden könnten.In the described prior art special sensors are always necessary for pot detection, which are arranged in the hob or between heating and cooking plate. These sensors must be designed so that they can withstand the high temperatures of the cooking zone. In addition, measures must be taken that these sensors do not interfere with the electrical insulation system heating cooker. In addition, a pot detection with such sensors is not suitable for use in hotplates, on the underside of the electrical resistance heating (via an insulating layer) is directly applied without an air gap arises in which these sensors could be accommodated.
Ausgehend von diesem Stand der Technik liegt der vorliegenden Erfindung die Aufgabe zugrunde, eine einfach aufgebaute Topferkennung zu verwirklichen, welche die oben genannten Nachteile nicht aufweist.Based on this prior art, the present invention has the object to realize a simply constructed pan detection, which does not have the disadvantages mentioned above.
Diese Aufgabe wird durch eine Vorrichtung zur Topferkennung mit den Merkmalen des Patentanspruches 1 gelöst. Ausführungsformen und Weiterbildungen der Erfindung ergeben sich aus den Unteransprüchen.This object is achieved by a device for pot detection with the features of
Durch die Verwendung des Widerstandsheizelementes selbst als kapazitiver Sensor für die Topferkennung ist ein zusätzlicher Sensor, der in dem System Kochplatte-Widerstandsbeheizung untergebracht werden müßte, nicht notwendig. Somit ist eine Beeinträchtigung des elektrischen Isolationssystems Beheizung-Kochtopf von vornherein ausgeschlossen. Darüber hinaus ist auch ein Luftspalt zwischen Heizelement und Kochplatte nicht notwendig, und das Heizelement kann in direkten Kontakt mit der Kochplatte gebracht werden. Außerdem entfällt der Aufwand für die Befestigung und Verdrahtung eines zusätzlichen Topferkennungssensors.By using the resistance heating element itself as a capacitive sensor for pot detection, an additional sensor, which would have to be accommodated in the system hotplate resistance heating, is not necessary. Thus, a deterioration of the electrical insulation system heating cooker is excluded from the outset. In addition, an air gap between the heating element and hotplate is not necessary, and the heating element can be brought into direct contact with the hotplate. In addition, eliminates the cost of attaching and wiring an additional pan detection sensor.
Vorzugsweise ist die Erfindung so ausgeführt, daß die Kapazität des Widerstandsheizelementes gegen ein Referenzpotential, vorzugsweise gegen Erde, in einen elektrischen Schwingkreis geschaltet ist, daß die Resonanzfrequenz dieses Schwingkreises von einer Auswerteeinheit erfaßbar ist und daß so die Anwesenheit und/oder die Größe eines Kochgefäßes auf der Kochplatte ermittelbar ist.Preferably, the invention is designed so that the capacitance of the resistance heating element against a reference potential, preferably connected to earth, is connected in an electrical resonant circuit that the resonant frequency of this resonant circuit can be detected by an evaluation and so that the presence and / or size of a cooking vessel on the hotplate can be determined.
Das Widerstandsheizelement ist bevorzugt über elektrische Schaltmittel, vorzugsweise Drosseln, an die Heizspannungsversorgung angeschlossen und über ein weiteres elektrisches Schaltmittel, vorzugsweise einen Trennkondensator, in den Schwingkreis geschaltet. In vorteilhafter Ausbildung beinhaltet der Schwingkreis das Widerstandsheizelement, den Trennkondensator, ein induktives Element, vorzugsweise eine Spule, und das Referenzpotential. Darüber hinaus ist bevorzugt vorgesehen, daß zwischen die elektrischen Anschlüsse des Widerstandsheizelementes ein Kondensator geschaltet ist.The resistance heating element is preferably connected via electrical switching means, preferably throttles, to the heating voltage supply and connected via a further electrical switching means, preferably a separating capacitor, in the resonant circuit. In an advantageous embodiment, the resonant circuit includes the resistance heating element, the separation capacitor, an inductive element, preferably a coil, and the reference potential. In addition, it is preferably provided that a capacitor is connected between the electrical terminals of the resistance heating element.
Bei Mehrkreiskochplatten sind in Weiterbildung der Erfindung mehrere Schwingkreise verwendbar, wobei jeweils das den entsprechenden Heizkreis bildende Heizelement als kapazitiver Sensor für die Topferkennung verwendet ist.In multi-circuit hotplates can be used in a further development of the invention, several resonant circuits, in each case the heating element forming the corresponding heating circuit is used as a capacitive sensor for pot detection.
Weiterhin ist vorgesehen, daß die Kochplatte aus Keramik oder aus Glaskeramik besteht, daß das Widerstandsheizelement ein Strahlungsheizkörper, ein Folienheizelement oder eine auf einem Träger aufgebrachte Heizschicht bzw. Heizbahn ist und daß das Widerstandsheizelement Leitungswicklungen oder ein Flachband aufweist.Furthermore, it is provided that the cooking plate made of ceramic or glass ceramic, that the resistance heating element is a radiant heater, a foil heater or a heating layer applied to a carrier or heating track and that the resistance heating element has line windings or a flat band.
Die Verwendung eines Flachbandheizkörpers, eines Folienheizelementes, einer Heizschicht oder Heizbahn ist für die Erfindung besonders günstig, da ein solches flaches Heizelement besonders gut als kapazitives Element geeingnet ist.The use of a flat strip heating element, a foil heating element, a heating layer or heating track is particularly favorable for the invention, since such a flat heating element is particularly well suited as a capacitive element.
In bevorzugter Ausführungsform der Erfindung ist aufgrund des Wertes oder aufgrund der Änderung der Resonanzfrequenz des Schwingkreises die Größe eines auf der Kochplatte stehenden Kochgefäßes bzw. das Maß der Bedeckung der Kochplatte durch ein Kochgefäß von der Auswerteeinheit erkennbar.In a preferred embodiment of the invention, due to the value or due to the change of the resonant frequency of the resonant circuit, the size of a cooking vessel standing on the hotplate or the extent of the covering of the hotplate by a cooking vessel of the evaluation unit recognizable.
Hier sei angemerkt, daß die Erfindung eine Vorrichtung zur Topferkennung betrifft, mit welcher nicht nur feststellbar ist, ob ein Kochgefäß auf der Kochplatte steht oder nicht, sondern auch, wie viel der Oberfläche der Kochplatte von einem Kochgefäß bedeckt ist, ob ein großes oder ein kleines Kochgefäß auf der Kochplatte steht und ob es mittig oder seitlich verschoben darauf steht.It should be noted that the invention relates to a device for pot detection, which is not only determined whether a cooking vessel is on the hotplate or not, but also how much of the surface of the cooking plate is covered by a cooking vessel, whether a large or a small cooking vessel is on the hotplate and whether it is centrally or laterally shifted.
Anhand der Zeichnungen wird im folgenden eine Ausführungsform der Erfindung näher erläutert, ohne daß die Erfindung auf eine solche Ausführungsform beschränkt sein soll.With reference to the drawings, an embodiment of the invention will be explained in more detail below, without the invention being limited to such an embodiment.
Es zeigen
Figur 1- einen Schaltplan einer erfindungsgemäßen Topferkennung,
Figur 2- ein Ersatzschaltbild des Schwingkreises aus
Figur 1, - Figur 3
- eine Prinzipskizze zur Ermittlung der verschiedenen Kapazitäten und
- Figur 4
- ein erweitertes Ersatzschaltbild des Schwingkreises aus
Figur 2.
- FIG. 1
- a circuit diagram of a pot detection according to the invention,
- FIG. 2
- an equivalent circuit diagram of the resonant circuit of Figure 1,
- FIG. 3
- a schematic diagram to determine the different capacities and
- FIG. 4
- an extended equivalent circuit diagram of the resonant circuit of Figure 2.
Eine Vorrichtung zur Topferkennung weist ein unter einer elektrisch beheizten Kochplatte befindliches Widerstandsheizelement 1 auf (Fig. 1). Dieses ist über zwei Leitungen 2, 3 an eine elektrische Heizspannungsversorgung mit 230 Volt Wechselstrom angeschlossen. In die Leitungen 2, 3 sind zwei Drosseln DR1 und DR2 geschaltet. Diese haben für die niederfrequente Heizspannung (50 bzw. 60 Hz) eine geringe Impedanz, lassen also den Heizstrom nahezu ungehindert fließen An der Leitung 3 ist im Abzweigungspunkt 4 über einen Trennkondensator CN eine Spule L angeschlossen, welche andererseits mit dem Gehäuse 5 und mit Erde verbunden ist. Somit bilden das Widerstandsheizelement 1 bzw. seine Kapazität zum geerdeten Gehäuse 5, der Trennkondensator CN, die Spule L und Erde einen Schwingkreis.A device for pot detection has a
Der Trennkondensator CN hat für niedrige Frequenzen eine sehr hohe Impedanz, für hohe Frequenzen dagegen eine sehr niedrige. Dadurch verhindert er, daß die niederfrequente 230-Volt-Versorgungsspannung gegen Erde kurzgeschlossen ist. Andererseits läßt er hochfrequente Ströme, wie sie in solchen Schwingkreisen auftreten, nahezu ungehindert passieren. Somit trennt der Trennkondensator CN den Schwingkreis wirksam von dem Heizstromkreis.The isolating capacitor CN has a very high impedance for low frequencies, but a very low one for high frequencies. This will prevent the low frequency 230 volt supply voltage from being shorted to ground. On the other hand, it allows high frequency currents, as they occur in such resonant circuits, happen almost unhindered. Thus, the separation capacitor CN effectively disconnects the oscillation circuit from the heating circuit.
Die Drosseln DR1 und DR2 haben für die hohen Frequenzen des Schwingkreises eine hohe Impedanz, so daß diese hohen Frequenzen nicht ins Stromnetz gelangen können.The chokes DR1 and DR2 have a high impedance for the high frequencies of the resonant circuit, so that these high frequencies can not get into the mains.
Zwischen die Leitungen 2 und 3 ist auf der von der Versorgungsspannung abgewandten Seite der Drosseln DR1 und DR2 ein Kondensator CP geschaltet. Dieser hat wiederum für die niederfrequente Versorgungsspannung eine sehr hohe Impedanz, läßt also den Heizstrom nicht durch; er hat jedoch für hohe Frequenzen (also für die des Schwingkreises) eine sehr geringe Impedanz, läßt diese demnach ungehindert durch. Die Zwischenschaltung des Kondensators CP ergibt, daß beide Anschlüsse des Widerstandsheizelementes 1 für die hohen Frequenzen des Schwingkreises auf gleichem Potential liegen und so die gesamte Fläche des Heizelementes 1 als kapazitätsbildende Kondensatorfläche genutzt werden kann.Between the
In Figur 2 ist ein Ersatzschaltbild des Schwingkreises aus Fig. 1 gezeigt, der - wie oben erwähnt - vom niederfrequenten Heizstromkreis getrennt ist. CH bezeichnet die Kapazität des Heizelementes 1 gegen Erde. Diese Kapazität CH ändert sich - wie weiter unten näher erläutert wird -, wenn ein Kochtopf 6 auf die Kochplatte gestellt wird. Mit dieser Kapazitätsänderung von CH ändert sich auch die Resonanzfrequenz des Schwingkreises.In Figure 2, an equivalent circuit diagram of the resonant circuit of Fig. 1 is shown, which - as mentioned above - is separated from the low-frequency heating circuit. CH denotes the capacity of the
In Figur 3 ist skizziert, wie sich die Kapazität CH des Widerstandsheizelementes 1 gegen Erde zusammensetzt. Das Heizelement 1 liegt, eingebettet in eine Isolierschicht 7, in dem Gehäuse 5. Über dem Heizelement 1 befindet sich eine Glaskeramikplatte 8, auf welcher der Kochtopf 6 steht. Das Widerstandsheizelement 1 hat nun zum einen eine Kapazität gegen das geerdete Gehäuse 5, also gegen Erde. Diese Kapazität ist mit CG bezeichnet. Zum anderen hat das Heizelement 1 aber auch eine Kapazität CT gegenüber dem Kochtopf 6. Der Kochtopf 6 wiederum hat ebenfalls eine Kapazität gegen Erde, welche mit CE bezeichnet ist.In Figure 3 is outlined how the capacitance CH of the
In Figur 4 ist das Ersatzschaltbild des Schwingkreises gezeigt, wobei die Kapazitäten CG, CT und CE aus Figur 3 die Kapazität CH aus Figur 2 ersetzen. Hier wird nun auch deutlich, warum CH eine veränderliche Kapazität ist: Wenn der Kochtopf 6 von der Kochplatte genommen wird oder auch nur auf der Glaskeramikplatte 8 seitlich verschoben wird, ändert sich die Kapazität CT zwischen Widerstandsheizelement 1 und Kochtopf 6 Somit ist also CT die Kapazität, die für eine Veränderung der Gesamtkapazität CH zwischen Heizelement 1 und Erde bei Hinstellen oder Wegnehmen eines Kochtopfes 6 und damit eine Veränderung der Resonanzfrequenz des Schwingkreises bewirkt.In Figure 4, the equivalent circuit of the resonant circuit is shown, wherein the capacitances CG, CT and CE of Figure 3 replace the capacity CH of Figure 2. Here it is now clear why CH is a variable capacity: When the cooking pot 6 is taken from the hotplate or even only on the glass ceramic plate. 8 Thus, CT is the capacitance which causes a change in the total capacitance C H between
In Figur 4 sind weiterhin mehrere Möglichkeiten aufgezeigt, wie die Resonanzfrequenz des Schwingkreises durch eine Auswerteeinheit erfaßbar ist. So kann die Auswerteeinheit (nicht gezeigt) die Spannung in dem Schwingkreis an den Anschlußpunkten A1 oder A2 (jeweils gegen Erde) oder zwischen den Punkten A3 und A4 abgreifen. Die Anschlüsse A3 und A4 sind mit den beiden Enden einer Spule L' verbunden, welche mit der Spule L des Schwingkreises gekoppelt ist. Dadurch wird eine Übertragung der Schwingung, also der Frequenz des Schwingkreises zur Auswerteeinheit bei gleichzeitiger galvanischer Trennung erreicht.In Figure 4, several ways are further shown how the resonant frequency of the resonant circuit can be detected by an evaluation unit. Thus, the evaluation unit (not shown) can pick up the voltage in the resonant circuit at the connection points A1 or A2 (in each case to ground) or between the points A3 and A4. The terminals A3 and A4 are connected to the two ends of a coil L ', which is coupled to the coil L of the resonant circuit. As a result, a transmission of the vibration, ie the frequency of the resonant circuit to the evaluation unit is achieved with simultaneous galvanic isolation.
Die Auswertung der so übermittelten Signale in der Auswerteeinheit erfolgt nach allgemeinem Stand der Technik. Dabei kann jeweils die Frequenz des Schwingkreises bestimmt werden, indem z. B. die Schwingungen in einem bestimmten Zeitintervall gezählt werden. Es sind aber auch Differenzmethoden denkbar, bei denen direkt erkannt wird, wenn der Schwingkreis durch Aufstellen, Verschieben oder Wegnehmen eines Kochgefäßes verstimmt wird. Mit Hilfe der Größe der Frequenzänderung des Schwingkreises kann in der Auswerteeinheit erkannt werden, wie groß das aufgestellte Kochgefäß ist bzw. wie weit ein Kochgefäß auf die Kochplatte aufgeschoben oder von der Kochplatte weggezogen ist.The evaluation of the signals thus transmitted in the evaluation unit takes place according to the general state of the art. In each case, the frequency of the resonant circuit can be determined by z. B. the vibrations are counted in a certain time interval. But there are also conceivable difference methods in which is directly recognized when the resonant circuit is detuned by setting up, moving or removing a cooking vessel. With the help of the size of the frequency change of the resonant circuit can be detected in the evaluation unit, how large the installed cooking vessel or how far a cooking vessel is pushed onto the cooking plate or pulled away from the cooking plate.
Bei Mehrkreis-Heizelementen kann der jeweilige Heizkreis als eigener Sensor verwendet werden und so die Größe des aufgestellten Topfes ermittelt werden. Es können aber auch mehrere, von der jeweiligen Heizspannungsversorgung über Trennkondensatoren abgetrennte Heizelemente zu einem kapazitiven Sensor zusammengeschaltet werden In diesem Fall wird die Größe des aufgestellten Topfes durch das Maß der Frequenzänderung im Schwingkreis ermittelt.For multi-circuit heating elements, the respective heating circuit can be used as a separate sensor and thus the size of the installed pot can be determined. However, it is also possible for a plurality of heating elements separated from the respective heating voltage supply via isolating capacitors to be connected together to form a capacitive sensor. In this case, the size of the installed pot is determined by the extent of the frequency change in the resonant circuit.
Nach der Erkennung der Verhältnisse auf der Kochplatte sendet die Auswerteeinheit entsprechende Signale an eine Steuereinheit für die Kochplatte, die daraufhin z. B. die Heizung abschaltet, wenn kein Kochgefäß auf der Kochplatte steht, bei Anwesenheit eines kleinen Topfes nur den inneren Heizkreis einschaltet, bei Anwesenheit eines großen Topfes beide Heizkreise einschaltet oder die Heizung auch dann abstellt, wenn das Kochgefäß zu weit von der zentrischen Position auf der Kochplatte weggeschoben ist. Bei Bedarf kann die Steuereinheit auch so eingestellt werden, daß sie die Signale der Auswerteeinheit der Topferkennung ignoriert und die Heizung allein nach vorgegebenen Einstellwerten regeltAfter detecting the conditions on the hotplate, the evaluation sends corresponding signals to a control unit for the hotplate, which then z. B. switches off the heater when no cooking vessel is on the hotplate, in the presence of a small pot turns on only the inner heating circuit, in the presence of a large pot both heating circuits turns on or off the heating even if the cooking vessel too far from the central position the cooking plate is pushed away. If necessary, the control unit can also be set so that it ignores the signals of the evaluation of pan detection and controls the heating only according to preset settings
Claims (10)
- Apparatus for detecting the presence and/or the size of a cooking vessel on a cooking plate which can be electrically heated and has a resistance heating element which is located beneath the cooking plate and is connected to an electrical heating voltage supply,
characterized
in that the resistance heating element (1) is used as a capacitive sensor for pot detection purposes. - Apparatus according to Claim 1,
characterized
in that the capacitance of the resistance heating element (1) to a reference potential, preferably to earth, is connected in an electrical resonant circuit whose resonant frequency can be recorded by an evaluation unit, as a result of which the presence and/or the size of a cooking vessel (6) on the cooking plate can be determined. - Apparatus according to Claim 1 or 2,
characterized
in that the resistance heating element (1) is connected to the heating voltage supply via electrical circuitry means, preferably inductors (DR1, DR2), and is connected in the resonant circuit via a further electrical circuitry means, preferably an isolating capacitor (CN). - Apparatus according to one of Claims 1 to 3,
characterized
in that the resonant circuit contains the resistance heating element (1), the isolating capacitor (CN), an inductive element, preferably a coil (L), and the reference potential. - Apparatus according to one of the preceding claims,
characterized
in that a capacitor (CP) is connected between the electrical connections of the resistance heating element (1). - Apparatus according to one of the preceding claims,
characterized
in that a plurality of resonant circuits can be used in the case of multi-ring cooking plates, with the heating element which forms the corresponding heating ring respectively forming the capacitive sensor for pot detection purposes. - Apparatus according to one of the preceding claims,
characterized
in that the cooking plate is composed of ceramic or glass-ceramic. - Apparatus according to one of the preceding claims,
characterized
in that the resistance heating element (1) is a radiant heating body, a film heating element or a heating layer or heating track which is provided on a support. - Apparatus according to one of the preceding claims,
characterized
in that the resistance heating element (1) has line windings or a flat strip. - Apparatus according to one of the preceding claims,
characterized
in that the size of a cooking vessel (6) standing on the cooking plate or the extent to which a cooking vessel (6) covers the cooking plate can be detected by the evaluation unit on the basis of the value of or on the basis of the change in the resonant frequency of the resonant circuit.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19945297A DE19945297A1 (en) | 1999-09-22 | 1999-09-22 | Pot detection |
| DE19945297 | 1999-09-22 | ||
| US09/666,636 US6259069B1 (en) | 1999-09-22 | 2000-09-21 | Apparatus for detecting the presence of a cooking vessel |
Publications (3)
| Publication Number | Publication Date |
|---|---|
| EP1087640A2 EP1087640A2 (en) | 2001-03-28 |
| EP1087640A3 EP1087640A3 (en) | 2003-09-17 |
| EP1087640B1 true EP1087640B1 (en) | 2006-11-02 |
Family
ID=26055028
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP00119241A Expired - Lifetime EP1087640B1 (en) | 1999-09-22 | 2000-09-06 | Pot presence and size detection |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US6259069B1 (en) |
| EP (1) | EP1087640B1 (en) |
| AT (1) | ATE344609T1 (en) |
| DE (2) | DE19945297A1 (en) |
| ES (1) | ES2275464T3 (en) |
Families Citing this family (27)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| IT1319292B1 (en) * | 2000-11-08 | 2003-10-10 | Whirlpool Co | DEVICE TO DETECT THE PLACEMENT OF COOKING TOOLS ON A COOKING HOB WITH DISCRETE AND DISTRIBUTED HEATING ELEMENTS. |
| US6583392B2 (en) * | 2000-12-22 | 2003-06-24 | General Electric Company | Apparatus and method for determining properties of a cooktop using ultrasound techniques |
| DE10129175A1 (en) * | 2001-06-12 | 2003-01-09 | Ego Elektro Geraetebau Gmbh | Electrical radiation heating body for cooker hobs has sensor for cooking pot detection in form of radiation heating element, preferably corrugated flat metal strip |
| US6492627B1 (en) * | 2001-07-26 | 2002-12-10 | Emerson Electric Co. | Heating unit and control system for cooktops having capability to detect presence of a pan and methods of operating same |
| CA2358602A1 (en) * | 2001-10-09 | 2003-04-09 | Norax Canada Inc. | Resonance controlled conductive heating |
| DE10156777B4 (en) * | 2001-11-19 | 2012-08-02 | BSH Bosch und Siemens Hausgeräte GmbH | Method for transferring the setting data of a cooking area to another cooking area and cooking appliance for carrying out this method |
| ITMI20031602A1 (en) * | 2003-08-04 | 2005-02-05 | Whirlpool Co | COOKING PLAN WITH RANDOM PLACING WITH USER INTERFACE |
| US20050067399A1 (en) * | 2003-09-30 | 2005-03-31 | Chen-Lung Huang | Safety device of a coffee pot |
| US6834160B1 (en) * | 2003-11-14 | 2004-12-21 | Huang Chen-Lung | Electric heater with a sensor preventing no-water heating |
| DE102005050035A1 (en) * | 2005-10-14 | 2007-07-19 | E.G.O. Elektro-Gerätebau GmbH | Method for pot detection and induction heating |
| FR2895639B1 (en) * | 2005-12-27 | 2008-02-29 | Brandt Ind Sas | VARIABLE SIZE INDUCTION COOKING FIREPLACE |
| US20080153182A1 (en) * | 2006-12-21 | 2008-06-26 | Sokudo Co., Ltd | Method and system to measure and compensate for substrate warpage during thermal processing |
| US20080160462A1 (en) * | 2007-01-03 | 2008-07-03 | Sokudo Co., Ltd. | Method and system for bake plate heat transfer control in track lithography tools |
| KR20080068775A (en) * | 2007-01-20 | 2008-07-24 | 삼성전자주식회사 | Pan sensor and radiant heater having the same and heating cooker having the radiant heater and control method thereof |
| JP5145822B2 (en) * | 2007-08-20 | 2013-02-20 | セイコーエプソン株式会社 | Injection inspection apparatus, printing apparatus, and injection inspection method |
| EP2194754A1 (en) | 2008-12-05 | 2010-06-09 | Electrolux Home Products Corporation N.V. | Sensor arrangement for cookware detection |
| ES2356441B1 (en) * | 2008-12-19 | 2012-03-13 | Bsh Electrodomésticos España, S.A. | COOKING FIELD WITH AN INDUCTOR, AN INVESTOR AND A CONNECTION DEVICE. |
| FI122808B (en) * | 2009-02-24 | 2012-07-13 | Marimils Oy | Plane Electrode System |
| ES2362782B1 (en) * | 2009-04-17 | 2012-05-22 | Bsh Electrodomésticos España, S.A. | COOKING FIELD WITH A DETECTION AND PROCEDURE PROVISION TO OPERATE A COOKING FIELD. |
| DE102009020905A1 (en) | 2009-05-12 | 2010-12-09 | Diehl Ako Stiftung & Co. Kg | Hob for use in cookware, has multiple heating elements, which are arranged in or below hot plate for cooking zone, such that each heating element is assigned detection unit for pan detection |
| GB0913704D0 (en) * | 2009-08-05 | 2009-09-16 | Next Row Ltd | Induction heating unit for hair rollers |
| US8699299B2 (en) * | 2010-04-26 | 2014-04-15 | Semiconductor Components Industries, Llc | Self-tuning acoustic measurement system |
| DE102012006847A1 (en) * | 2012-04-04 | 2013-10-10 | Rational Aktiengesellschaft | Cooking apparatus for use in large-scale catering center, has interrogation unit to receive reply signal in response to specific signal sent to passive chip which is arranged such that load impedance of chip is detuned by accessory |
| DE102013201386A1 (en) * | 2013-01-29 | 2014-07-31 | BSH Bosch und Siemens Hausgeräte GmbH | Hob with a hob plate and a trace as area boundary for electronic components |
| ITUB20155746A1 (en) * | 2015-11-19 | 2017-05-19 | De Longhi Appliances Srl | APPARATUS FOR COOKING FOOD AND ITS COOKING METHOD |
| JP6991309B2 (en) * | 2018-03-16 | 2022-01-12 | 三菱電機株式会社 | Induction heating cooker |
| GB2593468B (en) * | 2020-03-23 | 2022-04-13 | Equip Line Ltd | An apparatus for heating a pot of food or beverage |
Family Cites Families (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4334135A (en) * | 1980-12-22 | 1982-06-08 | General Electric Company | Utensil location sensor for induction surface units |
| DE3720720A1 (en) * | 1987-06-23 | 1989-01-05 | Bosch Siemens Hausgeraete | Energy transmission for wire-free domestic appliances |
| DE3934157C2 (en) * | 1989-10-12 | 1999-01-28 | Bosch Siemens Hausgeraete | Hob |
| DE4004129A1 (en) * | 1990-02-10 | 1991-08-14 | Ego Elektro Blanc & Fischer | DEVICE FOR RECOGNIZING A COOKING VESSEL SET UP IN A HEATING ZONE OF A COOKING OR HEATING APPLIANCE |
| IT1260456B (en) | 1992-01-28 | 1996-04-09 | Whirlpool Italia | METHOD AND DEVICE TO DETECT A POT ON A GLASS-CERAMIC HOB IN THE PRESENCE OF A BODY IN CORRESPONDENCE WITH A HEATING ELEMENT ASSOCIATED WITH THAT PLAN |
| IT1272028B (en) * | 1993-03-15 | 1997-06-10 | Whirlpool Italia | DEVICE TO DETECT THE PRESENCE OF A FOOD CONTAINER, SUCH AS A POT, A BAKER OR SIMILAR, ON A GLASS-CERAMIC HOB. |
| DE4345472C2 (en) * | 1993-10-28 | 2001-05-10 | Aeg Hausgeraete Gmbh | Method for preparing dishes in a cookware at least partially filled with water on a ceramic hob, in particular glass ceramic |
| DE19603845B4 (en) * | 1996-02-05 | 2010-07-22 | E.G.O. Elektro-Gerätebau GmbH | Electric radiant heater with an active sensor for cooking vessel detection |
| DE19646826C5 (en) | 1996-02-22 | 2008-10-16 | AEG Hausgeräte GmbH | Device for measuring the temperature of hotplates |
| DE19643698C2 (en) * | 1996-05-11 | 2000-04-13 | Aeg Hausgeraete Gmbh | Device for shielding conductor tracks of a hob used for capacitive measurements |
| GB2321699B (en) * | 1997-01-31 | 1999-11-17 | Ceramaspeed Ltd | Electric heating method |
-
1999
- 1999-09-22 DE DE19945297A patent/DE19945297A1/en not_active Withdrawn
-
2000
- 2000-09-06 ES ES00119241T patent/ES2275464T3/en not_active Expired - Lifetime
- 2000-09-06 DE DE50013682T patent/DE50013682D1/en not_active Expired - Lifetime
- 2000-09-06 EP EP00119241A patent/EP1087640B1/en not_active Expired - Lifetime
- 2000-09-06 AT AT00119241T patent/ATE344609T1/en not_active IP Right Cessation
- 2000-09-21 US US09/666,636 patent/US6259069B1/en not_active Expired - Fee Related
Also Published As
| Publication number | Publication date |
|---|---|
| EP1087640A3 (en) | 2003-09-17 |
| ATE344609T1 (en) | 2006-11-15 |
| DE19945297A1 (en) | 2001-03-29 |
| US6259069B1 (en) | 2001-07-10 |
| EP1087640A2 (en) | 2001-03-28 |
| ES2275464T3 (en) | 2007-06-16 |
| DE50013682D1 (en) | 2006-12-14 |
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