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DE19907596A1 - Device which detects position of cooking vessel and guarantees that cooking vessel and heating element automatically agree has heating element slid under cooking vessel or cooking vessel - Google Patents

Device which detects position of cooking vessel and guarantees that cooking vessel and heating element automatically agree has heating element slid under cooking vessel or cooking vessel

Info

Publication number
DE19907596A1
DE19907596A1 DE1999107596 DE19907596A DE19907596A1 DE 19907596 A1 DE19907596 A1 DE 19907596A1 DE 1999107596 DE1999107596 DE 1999107596 DE 19907596 A DE19907596 A DE 19907596A DE 19907596 A1 DE19907596 A1 DE 19907596A1
Authority
DE
Germany
Prior art keywords
cooking vessel
heating element
cookware
guarantees
slid under
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.)
Withdrawn
Application number
DE1999107596
Other languages
German (de)
Inventor
Patrick Leidenberger
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.)
Individual
Original Assignee
Individual
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
Application filed by Individual filed Critical Individual
Priority to DE1999107596 priority Critical patent/DE19907596A1/en
Publication of DE19907596A1 publication Critical patent/DE19907596A1/en
Withdrawn legal-status Critical Current

Links

Classifications

    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/06Control, e.g. of temperature, of power
    • H05B6/062Control, e.g. of temperature, of power for cooking plates or the like
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/10Tops, e.g. hot plates; Rings
    • F24C15/102Tops, e.g. hot plates; Rings electrically heated
    • F24C15/103Tops, e.g. hot plates; Rings electrically heated being movable or rotatable
    • FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24HEATING; RANGES; VENTILATING
    • F24CDOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C15/00Details
    • F24C15/10Tops, e.g. hot plates; Rings
    • F24C15/102Tops, e.g. hot plates; Rings electrically heated
    • F24C15/105Constructive details concerning the regulation of the temperature
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B3/00Ohmic-resistance heating
    • H05B3/68Heating arrangements specially adapted for cooking plates or analogous hot-plates
    • H05B3/74Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
    • H05B3/746Protection, e.g. overheat cutoff, hot plate indicator
    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/05Heating plates with pan detection means

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Ceramic Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Cookers (AREA)

Abstract

A device which detects the position of the cooking vessel and guarantees that cooking vessel and heating element automatically agree, is described. The heating element is slid under the cooking vessel or the cooking vessel over the heating element. The position of the cooking vessel is determined in an inductive way. The position of the cooking vessel is also determined in an optical way. The positioning takes place by sliding in two directions. The positioning also takes place by rotation and sliding in one direction.

Description

Die Erfindung betrifft eine Vorrichtung, die gewährleistet, daß sich eine Herdplatte immer genau unter dem Kochgeschirr befindet.The invention relates to a device that ensures that a hob is always exactly under the cookware.

Um die beim Kochen eingesetzte Energie optimal auszunutzen und aus Sicherheitsgründen sollte sich die bei einem Herd beheizte Fläche immer genau unter dem momentan benutzten Kochgeschirr befinden.In order to optimally use the energy used in cooking and for safety reasons the area heated by a stove is always exactly under the cookware currently in use are located.

Die ersten Herde mit Glaskeramik-Kochfeld waren hinsichtlich der Flexibilität des beheizten Bereiches noch genauso unflexibel wie Herde mit herkömmlichen Heizplatten. In der zweiten Generation konnten dann Heizspiralen entsprechend der Form und Größe des Kochgeschirrs zu- oder abgeschaltet werden. Die neuen Elektroherde mit Glaskeramik-Kochfeld schalten selbstständig Heizspiralen zu oder ab. Die neueste Entwicklung im Bereich der Elektroherde sind Induktionsherde.The first cookers with glass ceramic cooktop were heated in terms of flexibility Area is just as inflexible as cookers with conventional heating plates. In the second Generation could then add heating coils according to the shape and size of the cookware or be switched off. The new electric cookers with glass ceramic cooktop switch independently Heating coils up or down. The latest development in the field of electric cookers are induction cookers.

Aus dem oben Gesagten geht hervor, daß sich die derzeit auf dem Markt befindlichen Herde mit Glaskeramik-Kochfeld zwar der Form und Größe des verwendeten Kochgeschirrs anpassen, aber nicht auf Ortsveränderungen des Kochgeschirrs (durch ungenaues Aufstellen oder Verrutschen beim Rühren) reagieren können. Induktionsherde können nur mit dafür geeignetem Kochgeschirr betrieben werden.From the above it is clear that the herds currently on the market include Adjust the ceramic hob to the shape and size of the cookware used, but not to changes in the location of the cookware (due to inaccurate installation or slipping when Stirring) can react. Induction cookers can only be operated with suitable cookware.

Die selbstfokusierende Herdplatte soll gewährleisten, daß die Bodenplatte des Kochgeschirrs und die Herdplatte laufend zur Deckung gebracht werden, bzw. daß sich die Herdplatte abschaltet, wenn Kochgeschirr und Herdplatte soweit auseinander sind, daß eine Nachführung nicht mehr möglich ist.The self-focusing hob is designed to ensure that the bottom plate of the cookware and the Stove are constantly brought to cover, or that the stove turns off when Cookware and hob are so far apart that tracking is no longer possible.

Diese Aufgabe wird dadurch gelöst, daß die Position des Kochgeschirrs durch Sensoren ermittelt wird. Eine elektronische Schaltung analysiert die Position von Kochgeschirr und Heizelement zueinander und veranlaßt, daß die Mechanik das Heizelement bzw. das Kochgeschirr so verschiebt, daß beide wieder zur Deckung gebracht werden.This object is achieved in that the position of the cookware is determined by sensors becomes. An electronic circuit analyzes the position of the cookware and heating element to each other and causes the mechanics to move the heating element or cookware so that both are brought back to cover.

Die Vorteile dieser Erfindung liegen zum Einen im Bereich der optimalen Energieausnützung. Ein weiterer, nicht zu unterschätzender Gesichtspunkt, ist die Sicherheit. Eine heiße Herdplatte, die nicht durch einen Topf bedeckt wird, stellt eine Verletzungsgefahr dar. Außerdem können sich Topflappen oder ähnliches an solchen unbedeckten Herdplatten entzünden. The advantages of this invention lie on the one hand in the area of optimal energy utilization. Another aspect that should not be underestimated is security. A hot hob that not covered by a saucepan poses a risk of injury Ignite potholders or the like on such uncovered hotplates.  

Allgemeine Beschreibunggeneral description

Bei einem Elektroherd mit Glaskeramik-Kochfeld befindet sich unter der Glaskeramikplatte(in der Übersicht nicht dargestellt) ein Heizelement (1), bestehend aus Trägerplatte, Heizspirale und Isoliermaterial in diesem Heizelement sind bei der selbstfokusierenden Herdplatte in zwei rechtwinklig zueinander stehenden Achsen Sensoren (2) angebracht, die die relative Position und den Durchmesser des Kochgeschirrs an die Steuerelektronik (3) übermitteln.In the case of an electric cooker with a glass ceramic hob, there is a heating element ( 1 ) underneath the glass ceramic plate (not shown in the overview), consisting of a support plate, heating coil and insulating material in this heating element. In the self-focusing stove plate, sensors ( 2 ) are at right angles to each other. attached, which transmit the relative position and diameter of the cookware to the control electronics ( 3 ).

Das Heizelement (1) selbst ist in zwei zueinander senkrecht stehenden Richtungen (parallel zur Ausrichtung der Sensoren (2) beweglich gelagert. Aufgrund der relativen Position zwischen Kochgeschirr und Heizelment (1) veranlaßt die Steuerelektronik (3) einen, oder beide der Motoren (4), das Heizelement (1) über die Mechanik (5) so zu verschieben, daß Kochgeschirr und beheizte Fläche zur Deckung gebracht werden. Dabei wird über ein, oder mehrere Relais (6) die Größe der beheizten Fläche durch Zu- oder Abschaltung von einer, oder meheren Heizspiralen der Größe des Kochgeschirrs angepaßt. Durch diese Relais(6) werden alle Heizspiralen abgeschaltet, wenn das Kochgeschirr entfernt, oder so weit verschoben wird, daß das Heizelement nicht mehr nachgeführt werden kann. Wird das Kochgeschirr innerhalb eines bestimmten Zeitintervalls nach der Entfernung wieder auf den Herd gestellt, so werden die Heizspiralen wieder eingeschaltet. Nach Verstreichen des Zeitintervalls muß der Herd aus Sicherheitsgründen wieder neu über den Stufenregler (7) eingeschaltet werden.The heating element ( 1 ) itself is movably mounted in two mutually perpendicular directions (parallel to the alignment of the sensors ( 2 ). Due to the relative position between the cookware and the heating element ( 1 ), the control electronics ( 3 ) cause one or both of the motors ( 4 ) to move the heating element ( 1 ) via the mechanism ( 5 ) in such a way that cookware and the heated surface are brought in. The size of the heated surface is switched on or off by one or more relays ( 6 ) By means of these relays ( 6 ), all heating spirals are switched off when the cookware is removed or moved so far that the heating element can no longer be moved. If the cookware is moved within a certain time interval after the If the distance is put back on the stove, the heating coils are switched on again after the time interval has elapsed s For safety reasons, the stove must be switched on again using the step controller ( 7 ).

Ausführung des PrototypsExecution of the prototype

Bei dem realisierten Prototyp wurde das Heizelement (1) eines serienmäßigen Herdes mit zwei Heizspiralen verwendet.The heating element ( 1 ) of a standard stove with two heating spirals was used in the prototype.

Als Sensoren (2) zur Ermittlung der relativen Position zwischen Kochgeschirr und Heizelement wurden Spulen verwendet, die die Position des Kochgeschirrs auf induktivem Weg messen. Die Aufgabe der Steuerelektronik (3) wurde auf einenm PC unter Turbo Pascal realisiert. Als Motoren (4) zur Verschiebung des Heizelements wurden Schrittmotoren verwendet. Die Mechanik (5) zur Verschiebung des Heizelements besteht aus je einer Gewindestange für jede Bewegungsrichtung.Coils were used as sensors ( 2 ) to determine the relative position between the cookware and the heating element, which measure the position of the cookware by induction. The task of the control electronics ( 3 ) was realized on a PC under Turbo Pascal. Stepper motors were used as motors ( 4 ) for moving the heating element. The mechanism ( 5 ) for moving the heating element consists of a threaded rod for each direction of movement.

Mögliche andere AusführungenOther possible designs

Die selbstfokusierende Herdplatte ist nicht auf Elektroherde mit Glaskeramik-Kochfeld beschränkt. Es können auch Gas- oder Strahlungsheizelemente und Primärwicklungen von Induktionsherden unter dem Kochgeschirr verschoben werden.The self-focusing hob is not limited to electric cookers with a ceramic hob. Gas or radiant heating elements and primary windings from induction cookers can also be used be moved under the cookware.

Die Sensoren müssen nicht zwangsläufig induktiv arbeiten. Es sind auch optische Sensoren denkbar. Für einen Einsatz im Alltagsbetrieb ist ein PC zu teuer und zu groß. Die Steuerung müßte in diesem Fall durch entsprechende elektronische Schaltungen (bei Serienproduktion auch ICs) realisiert werden.The sensors do not necessarily have to work inductively. Optical sensors are also conceivable. A PC is too expensive and too large for everyday use. The control should be in this Case realized by appropriate electronic circuits (also ICs in series production) become.

Als Antrieb für die Mechanik können auch herkömmliche Elektromotoren verwendet werden. Die Größe der Verschiebung kann auch über die Dauer des Einschaltens bestimmt werden. Zur Verschiebung des Heizelements können neben Gewindestangen auch Seilzüge, Keil- oder Zahnriemen verwendet werden.Conventional electric motors can also be used to drive the mechanics. The The size of the shift can also be determined via the duration of switching on. In addition to threaded rods, cables, wedge or can be used to move the heating element Timing belts can be used.

Claims (5)

1. Vorrichtung, die die Position des Kochgeschirrs ermittelt und gewährleistet, daß Kochgeschirr und Heizelement selbsttätig zur Deckung gebracht werden, dadurch gekennzeichnet, daß das Heizelement unter dem Kochgeschirr oder das Kochgeschirr über dem Heizelement verschoben wird.1. A device that determines the position of the cookware and ensures that cookware and heating element are automatically brought to cover, characterized in that the heating element is moved under the cookware or the cookware over the heating element. 2. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Position des Kochgeschirrs auf induktivem Weg ermittelt wird.2. Device according to claim 1, characterized in that the position of the cookware on inductive path is determined. 3. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Position des Kochgeschirrs auf optischem Weg ermittelt wird.3. Apparatus according to claim 1, characterized in that the position of the cookware on optical path is determined. 4. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Positionierung durch Verschiebung in zwei Richtungen erfolgt.4. The device according to claim 1, characterized in that the positioning by There is a shift in two directions. 5. Vorrichtung nach Anspruch 1, dadurch gekennzeichnet, daß die Positionierung durch Rotation und Verschiebung in eine Richtung erfolgt.5. The device according to claim 1, characterized in that the positioning by rotation and One-way shift occurs.
DE1999107596 1999-02-22 1999-02-22 Device which detects position of cooking vessel and guarantees that cooking vessel and heating element automatically agree has heating element slid under cooking vessel or cooking vessel Withdrawn DE19907596A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE1999107596 DE19907596A1 (en) 1999-02-22 1999-02-22 Device which detects position of cooking vessel and guarantees that cooking vessel and heating element automatically agree has heating element slid under cooking vessel or cooking vessel

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Cited By (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206062A1 (en) * 2002-02-08 2003-08-28 Ego Elektro Geraetebau Gmbh Fastening device for flat electrical heating devices
FR2863039A1 (en) * 2003-11-27 2005-06-03 Brandt Ind Heating procedure for cooking vessel placed on cooker hob has series of inductors that detect presence of vessel and switch on appropriate number of heaters
WO2008101766A1 (en) * 2007-02-21 2008-08-28 BSH Bosch und Siemens Hausgeräte GmbH Hob with a movable heating element
WO2011012418A1 (en) 2009-07-29 2011-02-03 BSH Bosch und Siemens Hausgeräte GmbH Hotplate having at least two heating zones
ITTO20090991A1 (en) * 2009-12-15 2011-06-16 Indesit Co Spa INDUCTION HOB WITH MOBILE INDUCTORS
WO2013088306A1 (en) * 2011-12-12 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Cooking hob device having movable heating elements
ITAN20120109A1 (en) * 2012-08-22 2014-02-23 Stefania Romagnoli HOB WITH ADJUSTABLE HEATING ELEMENTS
US20140231413A1 (en) * 2011-11-09 2014-08-21 Electrolux Home Products Corporation N.V. Cooking hob, household appliance and method of operating an cooking hob
US10605464B2 (en) 2012-10-15 2020-03-31 Whirlpool Corporation Induction cooktop
EP3720245A1 (en) * 2019-04-04 2020-10-07 Vestel Elektronik Sanayi ve Ticaret A.S. Induction cooking device and method
US10893579B2 (en) 2017-07-18 2021-01-12 Whirlpool Corporation Method for operating an induction cooking hob and cooking hob using such method
US10993292B2 (en) 2017-10-23 2021-04-27 Whirlpool Corporation System and method for tuning an induction circuit
US20210199304A1 (en) * 2017-11-20 2021-07-01 BSH Hausgeräte GmbH Method for installing a cooking system
US11140751B2 (en) 2018-04-23 2021-10-05 Whirlpool Corporation System and method for controlling quasi-resonant induction heating devices
US11212880B2 (en) 2012-10-15 2021-12-28 Whirlpool Emea S.P.A. Induction cooking top
US12302478B2 (en) 2018-04-23 2025-05-13 Whirlpool Corporation Control circuits and methods for distributed induction heating devices

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315819A1 (en) * 1975-06-27 1977-01-21 Orega Electro Mecanique Electromagnetic induction heater for culinary use - uses rectangular windings arranged on cylindrical support with adjacent windows producing phase opposed fields
DE3039220A1 (en) * 1980-10-17 1982-05-19 Neff - Werke, Carl Neff Gmbh, 7518 Bretten Cooking hob for incorporation in kitchen work plate - has flat heating elements on supports, pivotally mounted w.r.t. glass-ceramic hob
DE3533997A1 (en) * 1985-09-24 1987-03-26 Licentia Gmbh Cooking top with a number of cooking points
DE69106145T2 (en) * 1990-11-09 1995-05-04 Europ Equip Menager COOKING HOB WITH INDUCTION HEATING.
DE19603845A1 (en) * 1996-02-05 1997-08-07 Ego Elektro Blanc & Fischer Electric radiant heater with an active sensor for cooking vessel detection

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2315819A1 (en) * 1975-06-27 1977-01-21 Orega Electro Mecanique Electromagnetic induction heater for culinary use - uses rectangular windings arranged on cylindrical support with adjacent windows producing phase opposed fields
DE3039220A1 (en) * 1980-10-17 1982-05-19 Neff - Werke, Carl Neff Gmbh, 7518 Bretten Cooking hob for incorporation in kitchen work plate - has flat heating elements on supports, pivotally mounted w.r.t. glass-ceramic hob
DE3533997A1 (en) * 1985-09-24 1987-03-26 Licentia Gmbh Cooking top with a number of cooking points
DE69106145T2 (en) * 1990-11-09 1995-05-04 Europ Equip Menager COOKING HOB WITH INDUCTION HEATING.
DE19603845A1 (en) * 1996-02-05 1997-08-07 Ego Elektro Blanc & Fischer Electric radiant heater with an active sensor for cooking vessel detection

Cited By (23)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10206062A1 (en) * 2002-02-08 2003-08-28 Ego Elektro Geraetebau Gmbh Fastening device for flat electrical heating devices
US8742299B2 (en) 2003-11-27 2014-06-03 Fagorbrandt Sas Method for heating a container placed on a cooktop by heating means associated to inductors
US7759616B2 (en) 2003-11-27 2010-07-20 Brandt Industries Method for heating a container placed on a cooktop by heating means associated to inductors
FR2863039A1 (en) * 2003-11-27 2005-06-03 Brandt Ind Heating procedure for cooking vessel placed on cooker hob has series of inductors that detect presence of vessel and switch on appropriate number of heaters
WO2008101766A1 (en) * 2007-02-21 2008-08-28 BSH Bosch und Siemens Hausgeräte GmbH Hob with a movable heating element
ES2319031A1 (en) * 2007-02-21 2009-05-01 Bsh Electrodomesticos España, S.A. COOKING FIELD WITH A MOVABLE HEATING ELEMENT.
ES2319031B1 (en) * 2007-02-21 2010-02-03 Bsh Electrodomesticos España, S.A. COOKING FIELD WITH A MOVABLE HEATING ELEMENT.
DE112008000413B4 (en) * 2007-02-21 2014-07-03 BSH Bosch und Siemens Hausgeräte GmbH Hob with a movable heating element
WO2011012418A1 (en) 2009-07-29 2011-02-03 BSH Bosch und Siemens Hausgeräte GmbH Hotplate having at least two heating zones
ITTO20090991A1 (en) * 2009-12-15 2011-06-16 Indesit Co Spa INDUCTION HOB WITH MOBILE INDUCTORS
US20140231413A1 (en) * 2011-11-09 2014-08-21 Electrolux Home Products Corporation N.V. Cooking hob, household appliance and method of operating an cooking hob
WO2013088306A1 (en) * 2011-12-12 2013-06-20 BSH Bosch und Siemens Hausgeräte GmbH Cooking hob device having movable heating elements
ITAN20120109A1 (en) * 2012-08-22 2014-02-23 Stefania Romagnoli HOB WITH ADJUSTABLE HEATING ELEMENTS
US10605464B2 (en) 2012-10-15 2020-03-31 Whirlpool Corporation Induction cooktop
US11212880B2 (en) 2012-10-15 2021-12-28 Whirlpool Emea S.P.A. Induction cooking top
US11655984B2 (en) 2012-10-15 2023-05-23 Whirlpool Corporation Induction cooktop
US10893579B2 (en) 2017-07-18 2021-01-12 Whirlpool Corporation Method for operating an induction cooking hob and cooking hob using such method
US10993292B2 (en) 2017-10-23 2021-04-27 Whirlpool Corporation System and method for tuning an induction circuit
US20210199304A1 (en) * 2017-11-20 2021-07-01 BSH Hausgeräte GmbH Method for installing a cooking system
US11140751B2 (en) 2018-04-23 2021-10-05 Whirlpool Corporation System and method for controlling quasi-resonant induction heating devices
US12245348B2 (en) 2018-04-23 2025-03-04 Whirlpool Corporation System and method for controlling quasi-resonant induction heating devices
US12302478B2 (en) 2018-04-23 2025-05-13 Whirlpool Corporation Control circuits and methods for distributed induction heating devices
EP3720245A1 (en) * 2019-04-04 2020-10-07 Vestel Elektronik Sanayi ve Ticaret A.S. Induction cooking device and method

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