EP1276350A2 - Corps de chauffe électrique rayonnant possédant un capteur actif de reconnaissance d'ustensile de cuisson - Google Patents

Corps de chauffe électrique rayonnant possédant un capteur actif de reconnaissance d'ustensile de cuisson Download PDF

Info

Publication number: EP1276350A2
Authority: EP; European Patent Office
Prior art keywords: sensor; radiant heater; heater according; radiant; metal plate
Prior art date: 2001-07-13
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

EP02014286A

Other languages

German (de)

English (en)

Other versions

EP1276350A3 (fr

EP1276350B1 (fr

Inventor

Eugen Wilde

John Erich

Wilfried Schilling

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

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.)

2001-07-13

Filing date

2002-06-27

Publication date

2003-01-15

2002-06-27 Application filed by EGO Elektro Geratebau GmbH filed Critical EGO Elektro Geratebau GmbH

2003-01-15 Publication of EP1276350A2 publication Critical patent/EP1276350A2/fr

2004-10-20 Publication of EP1276350A3 publication Critical patent/EP1276350A3/fr

2006-12-13 Application granted granted Critical

2006-12-13 Publication of EP1276350B1 publication Critical patent/EP1276350B1/fr

2022-06-27 Anticipated expiration legal-status Critical

Status Expired - Lifetime legal-status Critical Current

Images

Classifications

- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
- H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
- H05B3/746—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 a active sensor to detect the positioning of a cooking vessel a hotplate covering the radiator according to the preamble of claim 1.
Such sensors as known for example from DE 196 03 845 A1 are used to recognize if and where a cooking vessel on the hotplate. Only when the cooking vessel is on the Heating activated. This is done on the one hand to waste energy due to the fact that cooking vessels are not attached and, on the other hand, the risk of Burning or destruction of objects by hot, so to speak Avoid open hot plates.
the sensor according to DE 196 03 845 A1 is designed as a loop made of wire, the essentially round shape between the radiator and Hotplate runs.
the fitting of a corresponding metallic Cooking vessel causes a change in the inductance of the sensor loop.
This change is set up by associated electronics of a cooking vessel is detected.
the heating can be activated be as intended. Difficulties arise itself from the attachment of the sensor to the radiant heater.
there are problems with the mass of the sensor especially in a so-called drop test, in which the sensor, for example can damage a glass ceramic plate as a hob.
the invention has for its object one mentioned to create electric radiant heater, in which the attachment of the sensor on the radiant heater is simplified and the sensor has an improved structure.
the senor is in contrast to the known and customary ones round sensor loops or coils designed without loops. It runs essentially in a straight line, preferably at least in the essential sections of its course. Particularly preferred it runs exclusively in the area of the radiant heater or the heating zone essentially straightforward. Loopless means in context with the present invention in particular that the sensor does not form a completely or largely closed loop. Prefers the sensor does not limit any area in its course.
a sensor according to the invention has the advantage that the structure can be significantly simplified.
On the radiant heater is not attach an entire circumferential loop, which may also has several turns, but only straight sections. These can, for example, have at least one end Edge of the radiant heater or an insulation surrounding it be attached.
loop-shaped sensors have the disadvantage that that they do not exactly capture the central zone of the radiant heater, because they don’t cross them directly. Because of its circumferential, no section through this central loop-shaped character Area. A straight sensor over this central area on the other hand, leading is not a problem.
the invention has surprisingly succeeded, for example with two wires stretched in parallel over a multi-circuit radiator to recognize the placement of a cooking vessel as well as its size and even its position.
the senor only one May have section extending over the heating zone, for example can be designed as a straight electrical conductor. It can be from one Edge of the radiant heater to above its center, preferably to to the other edge. Such a sensor closes at all no area.
Electronics can decide whether a cooking vessel is attached or whether this cooking vessel size or position is accepted.
the sensor advantageously runs across a heating zone or the entire one Radiant heaters.
the one in the radiant heater have essential supporting or contained metal plate.
the metal plate can be designed as a return conductor or second connection for the sensor his. This means that complex additional connection work can be carried out here omitted. It has surprisingly been found that this Function of such a cooking vessel detection sensor is not impaired becomes. This can look like the sensor on at least one of its End areas opposite the metal plate of the radiant heater electrically is isolated. With this insulated end area, it is with one from the outside accessible first electrical connection connected. The other The end of the sensor is electrically connected to the metal plate, directly or indirectly. In a particularly simple embodiment, a second one is required electrical connection only at any point on the metal plate to be attached to be electrically connected to it.
a particularly preferred embodiment looks such that a connection possibility or a connector for the sensor both connections contained in a terminal block. This can be done near a Sensor end of the connecting block on the radiant heater or Metal plates are attached. When using the metal plate as Return conductor or second electrical connection, it is very easy to tap this signal at any point or the terminal block to be placed very close to one end of the sensor.
the sensor advantageously runs centrally over the heating area of the radiant heater. This can ensure that one on the associated Cooking place set cooking vessel in almost every sensible position covers the sensor and enables detection. With a radiant heater with multiple heating areas, the sensor can do more as a heating area, especially all heating areas.
the senor it is possible Attach the sensor to the radiant heater in such a way that it mounted radiant heater with a short distance below one Cooking plate on which the radiant heater is mounted runs.
This small distance can be 0.1mm to 10mm, preferably very be small and a few 1/10 mm.
the upper edge of a surrounding the radiant heater Isolation plates or the like can be taken in the assembled Condition on the underside of the hotplate.
the senor can at least have a height adjustment at one of its ends, so that a desired distance can be set exactly.
a height adjustment For example, an elongated hole, preferably in perpendicular to the Level of the radiant heater extending direction, on the radiant heater show yourself. Along this slot, the The height of the sensor can then be adjusted.
the senor rigid, preferably as thick wire or tubular.
a tubular sensor offers in particular a metal pipe that is electrically insulated from the outside can.
the sensor with a rod regulator commonly used for radiant heaters be combined.
the metal outer tube of the rod regulator can be used form the sensor or be used as an electrical conductor for it. This allows a combined unit to be created that is considerable requires less installation effort.
a normally used rod regulator with a residual heat contact can be advantageous be grown on the radiant heater and as Be designed sensor. If the residual heat contact of the rod regulator is not required, the space that has become free in the rod controller can be used as a connection block for the sensor connection.
the senor can be elastic or be flexible.
a wire, a strand or a metal band can cover at least a section of the Heating area be stretched and gain their stability by stretching.
spring means for compensating a thermally induced change in length of the sensor may be provided.
the spring means for storage at least one end of the sensor and / or to maintain the Voltage and thus serve the shape of the sensor.
the spring means should be constructed in such a way that it defines an exact position Allow attachment.
the spring force on the Time / temperature proof limit of the sensor material or on the cross section of the sensor This can ensure that the system sensor / spring means is optimally coordinated.
a leaf spring is preferably used as the spring means, which at a Execution possibility of the invention even from the metal edge of the Support plates for the radiant heater are punched out and exposed can be.
the sensor should be scale resistant to the high temperatures not permanently attacked or damaged in the heating zone become. Furthermore, it is advantageous if the material of the sensor does not have a Curie point. Otherwise, adulteration of the Show measurement results.
Rod controller possible to install a precious metal temperature measuring resistor.
Such measuring resistors are, for example, a PT 100 or a PT 1000.
the precious metal temperature measuring resistance can the ceramic part of the rod regulator can be replaced. Here it can Outer tube of the rod regulator as a sensor and as a holder for the precious metal temperature measuring resistor be trained.
the invention also comprises a cooktop with a plurality of radiant heaters, wherein at least one of the radiant heaters is advantageous all, can be designed in the manner described above.
Figures 1 and 2 show in cross section an inventive Radiant heater 11, which is essentially formed in the usual way is. That means in a metal plate 12 with the side pulled up Edge 13 is a flat insulating body 14 with a peripheral edge piece 15 arranged.
the heat conductor 16 of the radiant heater is on the insulating body 14 laid, for example in meandering turns, see FIG. 2 on the right is a connecting block on the metal plate edge 13 18 attached to a bar controller.
there are other electrical ones Connections 19 are provided for the heating conductor 16 of the radiant heater 11.
the tube 21 of the rod regulator of the connecting block 18 runs across the entire radiant heater 11 or metal plate 12 away. With its left end 22 is mounted in the insulating edge piece 15 or even stands a little bit further.
the metal tube 21 of the rod regulator is used as a pot detection sensor educated.
the Sensor 21 over the entire metal plate 12 or radiant heater 11 away and thus in any case covers one formed by the heating conductors 16 Heating zone 17.
the electrical contacting of the pipe or sensor 21 takes place in the right area on the one hand by the sensor either directly with the metal plate 12 or its edge 13 via the attachment of the stick controller is connected as grounding. Since the sensor 21 runs through the metal plate edge 13 can here as another possibility electrical contacting, for example by simple concerns or corresponding resilient contacting means can be provided.
the electrical contacting of the other left end of the sensor 21 takes place at the end 22, which, as can be seen in FIG.
both by the edge piece 15 and through the metal plate edge 13 extends and a Protrudes pieces over the edge 13.
One attached to the end 22 Piece of flexible metal wire 24 is to a pin 25 of a terminal block 27 out.
the connecting block 27 is on the metal plate edge 13 attached and consists in the usual way of insulating, preferably ceramic material. It is important that the sensor end 22 no contact with the metal plate edge 13 in the area of the opening Has. For this purpose, the opening can be made sufficiently large be, since a securing of the end 22 anyway by pushing through through the insulating edge 15. Another, more reliable The method is to use the breakthrough or a hole or cutout a kind of electrically insulating sleeve, for example made of plastic or Ceramics to isolate the inside. In this way, storage of the sensor end 22 also take place on the metal plate edge 13.
the metal plate edge 13 is in turn via a further flexible metal strand 28 connected to the second plug-in tab 26 of the connecting block 27.
the sensor 21 is contacted on one End over the sensor end 22 and the metal wire 24. At the other end it takes place over the metal strand 28 and the plate rim 13.
the Metal wire 28 could connect the connecting lug 26 directly to the metal plate 12 be connected or even bent out of it.
a similar radiant heater 111 is shown in FIGS. 3 and 4 with a metal plate 112, a metal plate edge 113, an insulating body 114 and two annular edge pieces 115a and 115b.
the inner Edge piece 115a divides the heating zone into an inner one above the heating conductors 116 Heating zone area 117a and an outer heating zone area 117b on.
a rod regulator 130 is shown in part in FIG. 4 and corresponds a conventional rod regulator to protect against overtemperature, has no connection here with the sensor function.
a leaf spring 131 is screwed or screwed onto the right metal plate edge 113 riveted, with its long resilient leg at an angle of protrudes about 20 ° from the metal plate edge 113.
a sensor wire 121 is attached, the attachment being electrically conductive is.
the sensor wire 121 runs across the radiant heater 111 each through corresponding cutouts 133 in the edge pieces 115a and 115b, covering the heating zone areas 117a and 117b.
connection block 127 At the left end of the metal plate 112 or its edge 113 is a connection block 127 attached, which corresponds to that of FIGS. 1 and 2.
the sensor wire 121 is directly on an upstanding Section of a plug terminal lug 125 attached in the terminal block 127 such that it is straight from the leaf spring 131 by tension is held.
the other plug tab 126 In accordance with the sensor contact of FIG. 1 and 2 is the other plug tab 126 by means of a flexible metal strand 128 with the metal plate edge 113 and thus over the leaf spring 131 connected to the sensor 121.
sensor 121 is over the two plug-in terminal lugs 125 and 126 in a single terminal block 127 contacted.
a connecting cable to one corresponding cooking vessel detection electronics This can with other electronics to control the radiant heater or an entire hob can be combined.
Terminal lug 126 protruding portion on which the sensor wire 121 is attached flexible in the direction of the sensor in the manner of a leaf spring or To design the same.
a corresponding strip could be punched out of the plate rim 113 and bent out laterally to form a leaf spring 131 or their elaborate attachment to replace.
a thicker wire possibly not flexible, can also be used.
the leaf spring 131 can have corresponding spring means for fastening be used at at least one end.

Landscapes

Chemical & Material Sciences (AREA)
Engineering & Computer Science (AREA)
Ceramic Engineering (AREA)
Electric Stoves And Ranges (AREA)
Resistance Heating (AREA)
Control Of Resistance Heating (AREA)
Cookers (AREA)
Radiation Pyrometers (AREA)

EP02014286A 2001-07-13 2002-06-27 Corps de chauffe électrique rayonnant possédant un capteur actif de reconnaissance d'ustensile de cuisson Expired - Lifetime EP1276350B1 (fr)

Applications Claiming Priority (2)

Application Number	Priority Date	Filing Date	Title
DE10135270		2001-07-13
DE10135270A DE10135270A1 (de)	2001-07-13	2001-07-13	Elektrischer Strahlungsheizkörper mit einem aktiven Sensor zur Kochgefäßerkennung

Publications (3)

Publication Number	Publication Date
EP1276350A2 true EP1276350A2 (fr)	2003-01-15
EP1276350A3 EP1276350A3 (fr)	2004-10-20
EP1276350B1 EP1276350B1 (fr)	2006-12-13

Family

ID=7692413

Family Applications (1)

Application Number	Title	Priority Date	Filing Date
EP02014286A Expired - Lifetime EP1276350B1 (fr)	2001-07-13	2002-06-27	Corps de chauffe électrique rayonnant possédant un capteur actif de reconnaissance d'ustensile de cuisson

Country Status (7)

Country	Link
US (1)	US6765179B2 (fr)
EP (1)	EP1276350B1 (fr)
JP (1)	JP4086181B2 (fr)
AT (1)	ATE348494T1 (fr)
AU (1)	AU781928B2 (fr)
DE (2)	DE10135270A1 (fr)
ES (1)	ES2277973T3 (fr)

Families Citing this family (15)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
GB0301164D0 (en) *	2003-01-18	2003-02-19	Ceramaspeed Ltd	Temperature-responsive device
GB0313703D0 (en) *	2003-06-13	2003-07-16	Ceramaspeed Ltd	Temperature sensor assembly for an electrical heating arrangement
DE10337543A1 (de) *	2003-08-05	2005-02-24	E.G.O. Elektro-Gerätebau GmbH	Vorrichtung und Verfahren zur Messung der Temperatur einer Heizeinrichtung
DE102005030555A1 (de) *	2005-06-22	2007-01-04	E.G.O. Elektro-Gerätebau GmbH	Sensoreinrichtung für eine Heizeinrichtung
DE102005058505A1 (de) *	2005-12-02	2007-06-06	E.G.O. Elektro-Gerätebau GmbH	Topferkennungs-Sensor und Temperaturerfassungs-Einrichtung
US7554060B2 (en) *	2006-09-29	2009-06-30	England Raymond O	Displaying cooking-related information
US20100147832A1 (en) *	2008-12-16	2010-06-17	Barker Iii Charles R	Induction cookware identifying
CN201365481Y (zh) *	2009-02-13	2009-12-23	东莞市前锋电子有限公司	电磁式烧烤炉
EP2626638B1 (fr)	2010-10-05	2018-08-01	Shibaura Electronics Co., Ltd.	Dispositif de cuisson
US8933377B2 (en)	2011-12-09	2015-01-13	E.G.O. Elektro-Gerätebau GmbH	Control device for an electrical heating device for a cooking field, cooking field and method for operating such an electrical heating device
US8884195B2 (en) *	2011-12-09	2014-11-11	E.G.O. Elektro-Gerätebau GmbH	Heating device, method of producing a heating device and method for operating a heating device
CN103939960B (zh) *	2014-03-28	2017-01-18	佛山市顺德区美的电热电器制造有限公司	用于电磁炉的锅具大小判断方法和电磁炉
DE102016224069A1 (de) *	2016-12-02	2018-06-07	E.G.O. Elektro-Gerätebau GmbH	Kochgerät mit einer Kochplatte und einer Heizeinrichtung darunter
US10873994B2 (en) *	2017-07-24	2020-12-22	Haier Us Appliance Solutions, Inc.	Co-axial multi-zone induction cooking apparatus
GB2593468B (en) *	2020-03-23	2022-04-13	Equip Line Ltd	An apparatus for heating a pot of food or beverage

Citations (1)

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Publication number	Priority date	Publication date	Assignee	Title
US5893996A (en) *	1996-02-05	1999-04-13	E.G.O. Elektro-Geratebau Gmbh	Electric radiant heater with an active sensor for cooking vessel detection

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US4334135A (en) *	1980-12-22	1982-06-08	General Electric Company	Utensil location sensor for induction surface units
IT1260456B (it) *	1992-01-28	1996-04-09	Whirlpool Italia	Metodo e dispositivo per rilevare a presenza di un corpo per esempio una pentola su un piano di cottura in vetroceramica in corrispondenza di un elemento riscaldante associato a tale piano
GB2320626B (en) *	1996-12-19	2000-10-18	Ceramaspeed Ltd	Cooking utensil detection method
DE19700753C2 (de) *	1997-01-11	2000-09-14	Schott Glas	Kochfeld mit einer nicht-metallischen Kochplatte
DE10035745B4 (de) *	2000-07-22	2004-02-05	E.G.O. Elektrogerätebau GmbH	Temperaturerfassungseinrichtung für einen elektrischen Strahlungsheizkörper

2001
- 2001-07-13 DE DE10135270A patent/DE10135270A1/de not_active Withdrawn
2002
- 2002-06-21 AU AU48888/02A patent/AU781928B2/en not_active Ceased
- 2002-06-27 AT AT02014286T patent/ATE348494T1/de not_active IP Right Cessation
- 2002-06-27 DE DE50208931T patent/DE50208931D1/de not_active Expired - Fee Related
- 2002-06-27 EP EP02014286A patent/EP1276350B1/fr not_active Expired - Lifetime
- 2002-06-27 ES ES02014286T patent/ES2277973T3/es not_active Expired - Lifetime
- 2002-07-08 JP JP2002198088A patent/JP4086181B2/ja not_active Expired - Fee Related
- 2002-07-09 US US10/191,160 patent/US6765179B2/en not_active Expired - Fee Related

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number	Priority date	Publication date	Assignee	Title
US5893996A (en) *	1996-02-05	1999-04-13	E.G.O. Elektro-Geratebau Gmbh	Electric radiant heater with an active sensor for cooking vessel detection

Also Published As

Publication number	Publication date
ATE348494T1 (de)	2007-01-15
US20030010769A1 (en)	2003-01-16
JP4086181B2 (ja)	2008-05-14
US6765179B2 (en)	2004-07-20
DE10135270A1 (de)	2003-01-23
EP1276350A3 (fr)	2004-10-20
DE50208931D1 (de)	2007-01-25
AU4888802A (en)	2003-01-16
JP2003106537A (ja)	2003-04-09
AU781928B2 (en)	2005-06-23
ES2277973T3 (es)	2007-08-01
EP1276350B1 (fr)	2006-12-13

Publication	Publication Date	Title
EP1276350B1 (fr)	2006-12-13	Corps de chauffe électrique rayonnant possédant un capteur actif de reconnaissance d'ustensile de cuisson
EP0141923B2 (fr)	1993-07-21	Limiteur de température pour plaques de cuisson en vitro-céramique
EP1152639B2 (fr)	2015-10-21	Unité de chauffage électrique, particulièrement destiné à des milieux liquides
EP1258171A1 (fr)	2002-11-20	Espace de cuisson a sonde pyrometrique
EP0288915B1 (fr)	1994-06-22	Radiateur à rayonnement électrique pour chauffer une plaque, en particulier une plaque vitrocéramique
DE2205132C3 (de)	1980-09-04	Elektrokochgerät
DE10035745B4 (de)	2004-02-05	Temperaturerfassungseinrichtung für einen elektrischen Strahlungsheizkörper
EP1671520B1 (fr)	2007-02-28	Element chauffant pour des appareils de cuisson
WO2006136363A1 (fr)	2006-12-28	Dispositif de détection pour dispositif de cuisson
DE69501693T2 (de)	1998-07-02	Verbesserter elektronischer Tauchsieder
EP1448024B1 (fr)	2007-11-14	Equipement du chauffage avec deux domaines
EP1258172B1 (fr)	2006-09-13	Surface de cuisson avec capteur de temperature
EP0028356A1 (fr)	1981-05-13	Indicateur de température pour la signalisation de l'état de température d'une surface de cuisson en verre-céramique
EP0927428B1 (fr)	2002-04-03	Element chauffant a rayonnement pour une zone de cuisson
EP1258170A1 (fr)	2002-11-20	Ensemble plaque de cuisson dote d'un capteur de temperature
DE60316881T2 (de)	2008-07-24	Elektrischer Strahlungsheizer
DE8515560U1 (de)	1985-08-29	Kochstellen-Beheizung
EP0114307B1 (fr)	1987-09-16	Dispositif de régulation de la température d'un appareil de chauffage
EP1260120A1 (fr)	2002-11-27	Espace de cuisson a sonde pyrometrique
DE10258726B4 (de)	2007-06-21	Heizeinrichtung für eine flächige Beheizung
EP1303169A1 (fr)	2003-04-16	Capteur de température utilisant un élément sensible ainsi que son utilisation
DE3131462A1 (de)	1983-02-24	Temperaturbegrenzte kochplatte
EP0081073A1 (fr)	1983-06-15	Moyens de chauffage à rayonnement pour chauffer des plaques de cuisson ou chauffantes
DE202006008305U1 (de)	2006-08-10	Kochfeld mit Temperaturfühler und Heizelement
DE2660073C2 (de)	1987-04-30	Elektrokochplatte mit einem Temperaturbegrenzer

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