EP1017255B1 - Kochfeld mit einem Sensor - Google Patents

Kochfeld mit einem Sensor Download PDF

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Publication number
EP1017255B1
EP1017255B1 EP19990403324 EP99403324A EP1017255B1 EP 1017255 B1 EP1017255 B1 EP 1017255B1 EP 19990403324 EP19990403324 EP 19990403324 EP 99403324 A EP99403324 A EP 99403324A EP 1017255 B1 EP1017255 B1 EP 1017255B1
Authority
EP
European Patent Office
Prior art keywords
hearth
cooking
hearth plate
sensor
temperature
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP19990403324
Other languages
English (en)
French (fr)
Other versions
EP1017255A1 (de
Inventor
René Thomson-CSF Prop. Intel. Cornec
Serge Thomson-CSF Prop. Intel. Boyer
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.)
Brandt Cooking SAC
Original Assignee
Brandt Cooking SAC
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 Brandt Cooking SAC filed Critical Brandt Cooking SAC
Publication of EP1017255A1 publication Critical patent/EP1017255A1/de
Application granted granted Critical
Publication of EP1017255B1 publication Critical patent/EP1017255B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • 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
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the invention relates to a hob with sensor.
  • Document WO 98 28945 describes an induction furnace comprising a plate capable of being heated by induction by a coil. A sensor temperature is fixed on the lower plate of the oven, allowing to control the operation of the coil at a temperature measured in the enclosure of the oven.
  • a temperature In a hob, it is known to use a temperature to measure the temperature of a kitchen utensil heated by a fireplace belonging to the hob. Measuring the temperature of the utensil can for example be used to control the heating power delivered by the household to the kitchen utensil.
  • a sensor in a hob. temperature above a cooking hearth.
  • the assembly is done by example, either through or below a hearth plate covering the home.
  • the hearth is circular and the temperature sensor is located substantially above the center of the hearth.
  • the sensor is connected to means for processing the temperature measurement by a link by electrical example.
  • This connection crosses the hearth substantially in its center. The fact of crossing the hearth causes a difficulty in mounting the Cooktop. When the fireplace is placed at the bottom of the table cooking and you want to put the hearth plate with its sensor above of the hearth, the mounting of the connection through the hearth is hampered by the hearth plate which masks the hearth.
  • the subject of the invention is a hob comprising a hearth plate, a cooking hearth located under the hearth plate, the hearth plate being intended to support a kitchen utensil heated by the cooking stove, a sensor fixed to the plate to be, a connection between the sensor and means treatment, characterized in that the connection is arranged between the focal point of and the hearth plate, and extends beyond the cooking zone.
  • the invention is advantageously implemented with a induction. Indeed, this type of hearth directly heats the cookware kitchen placed on the hearth plate, without heating the connection between the collector and the means of treatment. Other types of households would require a bond resistant to higher temperature, which would increase the cost of production from the hob.
  • the hob shown in Figure 1 has a plate hearth 1 and a cooking hearth 2 located under the hearth plate 1.
  • the hearth of firing 2 is substantially circular with axis 3.
  • Axis 3 is substantially perpendicular to the hearth plate 1.
  • the cooking hearth 2 has substantially the shaped like a flat washer. It is understood that other forms of focus cooking 2 are possible to implement the invention.
  • the home of cooking 2 has a hole 4 substantially on axis 3.
  • Certain materials used to make the hearth plate 1, such as for example glass ceramics are not good high electrical insulators temperature. It is therefore necessary in this case to electrically isolate the hearth from cooking 2 of the hearth plate 1. Air can be used to achieve this insulation but advantageously there is between the cooking hearth 2 and the hearth plate 1 an electrical insulator 5.
  • the electrical insulator 5 covers substantially the hearth 2.
  • the hob also includes a sensor temperature sensor 6.
  • the temperature sensor 6 is intended to measure the temperature of a kitchen utensil placed on the hearth plate 1, above of the cooking hearth 2.
  • the temperature sensor 6 is substantially located on the axis 3.
  • the temperature sensor 6 has a fixed part 7 fixed to the hearth plate 1.
  • the temperature sensor 6 also includes a part movable 8 along the axis 3.
  • a spring 9 keeps the movable part 8 at a distance of the fixed part 7. In the absence of kitchen utensil, the distance between the 5 mobile part 8 and the fixed part 7 is such that the mobile part 8 is located above the upper face 10 of the hearth plate 1.
  • the temperature sensor 6 also includes a component 11 for measuring the temperature.
  • Component 11 is for example a coefficient resistance positive or negative temperature.
  • Component 11 can also be produced at using a thermocouple.
  • Component 11 must be fixed as close as possible to the sensitive zone 8.
  • the hob has processing means 12.
  • the temperature sensor 6 is connected to the processing means 12 by a link 13.
  • the link 13 is arranged between the cooking hearth 2 and the plate hearth 1, and extends beyond the cooking hearth 2.
  • the link 13 is arranged above the electrical insulator 5.
  • Positioning of the connection 13 above the insulation electrical 5 reduces the electrical insulation of the connection 13 by in relation to its environment. This is an advantage over known embodiments which require electrical insulation of the connection 13 with respect to cooking hearth 2 when this crosses the cooking hearth cooking 2.
  • the processing means 12 can also supply the cooking stove 2 in energy.
  • the processing means 12 are then connected to a power supply 14 outside the hob.
  • the means of treatment 12 can for example enslave the supply of the household cooking 2 as a function of the temperature measured by the temperature 6.
  • the hob shown in Figure 2 has the plate hearth 1, the cooking hearth 2, the electrical insulation 5, the temperature 6 and the processing means 12, all arranged as at the figure 1. Unlike figure 1 the temperature sensor 6 does not has no moving part.
  • the temperature sensor 6 has a sensitive zone 20 maintained in a fixed position on the hearth plate 1.
  • the zone sensitive 20 is for example made by means of a metal pad immobilized against the upper face 21 of the hearth plate 1.
  • the plate hearth 1 has a hole 22 containing the component 11.
  • the hole 22 is sealed in the sensitive area 20.
  • the temperature sensor 6 can also be embedded in the hearth plate, when it is made for example by molding.
  • the sensitive zone 20 can also have any other shape such as for example the shape of a ball.
  • the sensitive area 20 can be located slightly above or below the top 21 of the hearth plate 1.
  • the variant represented in FIG. 2 presents the advantage of not having a moving part. Indeed, moving parts of this type of assembly make it complicated to perform and the temperature high to which it is subjected can cause seizure phenomena, preventing it from functioning properly. In addition, this type of mounting is not not waterproof and difficult to clean.
  • the component 11 is advantageously a thermocouple.
  • the thermocouple has a lower impedance than the resistors positive or negative temperature coefficient. So the signal from component 11 risks less disturbed by the magnetic field delivered by the focus of cooking 2.
  • the hearth is a induction fireplace. Indeed, the cooking hearth 2 then directly heats a kitchen utensil placed on the hearth plate 1 without heating the connection 13. Other types of outbreaks would require a high-resistance bond 13 temperature ; which would increase the cost of making the table cooking.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Measuring Temperature Or Quantity Of Heat (AREA)
  • Cookers (AREA)
  • Induction Heating Cooking Devices (AREA)

Claims (8)

  1. Kochfeld mit einer Kochplatte (1), einer unter der Kochplatte (1) angeordneten Kochstelle (2) mit einem Loch, wobei die Kochplatte (1) dazu bestimmt ist, ein von der Kochstelle (2) erhitztes Kochgerät zu tragen, einem an der Kochplatte (1) befestigten Fühler (6), einer Verbindung (13) zwischen dem Fühler (6) und Verarbeitungsmitteln (12), dadurch gekennzeichnet, daß die Verbindung (13) zwischen der Kochstelle (2) und der Kochplatte (1) angeordnet ist und sich über die Kochstelle hinaus (2) erstreckt.
  2. Kochfeld nach Anspruch 1, dadurch gekennzeichnet, daß die Kochstelle eine Induktions-Kochstelle ist.
  3. Kochfeld nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß der Fühler (6) ein Temperaturfühler (5) ist.
  4. Kochfeld nach den Ansprüchen 2 und 3, dadurch gekennzeichnet, daß der Fühler eine sensitive Zone (20) aufweist, die die Temperatur in einer oberhalb der Kochplatte (1) senkrecht zur Kochstelle (2) liegenden Zone mißt, und daß die sensitive Zone (20) des Temperaturfühlers (5) in einer feststehenden Position auf einer Oberseite (7) der Kochplatte (1) gehalten ist.
  5. Kochfeld nach Anspruch 4, dadurch gekennzeichnet, daß die Kochplatte (1) ein Loch (22) aufweist, das ermöglicht, das in dichter Weise durch die sensitive Zone (20) des Temperaturfühlers (6) verschlossen ist.
  6. Kochfeld nach einem der Ansprüche 4 oder 5, dadurch gekennzeichnet, daß die sensitive Zone (20) des Temperaturfühlers (6) aus Metall besteht.
  7. Kochfeld nach einem der Ansprüche 3 bis 6, dadurch gekennzeichnet, daß der Temperaturfühler (6) ein temperaturempfindliches Bauteil (11) aufweist, und daß das Bauteil ein Thermoelement ist.
  8. Kochfeld nach einem der vorangehenden Ansprüche, dadurch gekennzeichnet, daß es zudem ein elektrisches Isoliermittel (5) aufweist, das zwischen der Kochstelle (2) und der Kochplatte (1) angeordnet ist, und daß die Verbindung (13) zwischen der Kochplatte (1) und dem elektrischen Isoliermittel (5) angeordnet ist.
EP19990403324 1998-12-30 1999-12-30 Kochfeld mit einem Sensor Expired - Lifetime EP1017255B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
FR9816657A FR2788114B1 (fr) 1998-12-30 1998-12-30 Montage d'un capteur dans une table de cuisson
FR9816657 1998-12-30

Publications (2)

Publication Number Publication Date
EP1017255A1 EP1017255A1 (de) 2000-07-05
EP1017255B1 true EP1017255B1 (de) 2003-03-12

Family

ID=9534699

Family Applications (1)

Application Number Title Priority Date Filing Date
EP19990403324 Expired - Lifetime EP1017255B1 (de) 1998-12-30 1999-12-30 Kochfeld mit einem Sensor

Country Status (3)

Country Link
EP (1) EP1017255B1 (de)
DE (1) DE69905850D1 (de)
FR (1) FR2788114B1 (de)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100686034B1 (ko) * 2005-05-20 2007-02-26 엘지전자 주식회사 전기 레인지
WO2013134239A1 (en) * 2012-03-06 2013-09-12 Meyer Intellectual Properties Ltd. Method and apparatus for temperature measurement during induction cooking
GB2552531B (en) * 2016-07-28 2019-10-23 Richards Morphy N I Ltd Temperature sensor in induction cooker

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5256860A (en) * 1993-01-22 1993-10-26 Therm-O-Disc, Incorporated Control for glass cooktops utilizing rod-shaped thermistor
FR2728060B1 (fr) * 1994-12-09 1997-08-14 Seb Sa Dispositif pour chauffer par induction un recipient de cuisson
US5603858A (en) * 1995-06-02 1997-02-18 Aladdin Synergetics, Inc. Heat retentive server for induction heating
US5872351A (en) * 1996-12-20 1999-02-16 Taco Bell Corporation Domed induction oven

Also Published As

Publication number Publication date
FR2788114A1 (fr) 2000-07-07
FR2788114B1 (fr) 2001-03-23
EP1017255A1 (de) 2000-07-05
DE69905850D1 (de) 2003-04-17

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