EP3334249A1 - Abstandshalter mit einer induktionsspule eines induktionskochfelds - Google Patents

Abstandshalter mit einer induktionsspule eines induktionskochfelds Download PDF

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Publication number
EP3334249A1
EP3334249A1 EP17201765.9A EP17201765A EP3334249A1 EP 3334249 A1 EP3334249 A1 EP 3334249A1 EP 17201765 A EP17201765 A EP 17201765A EP 3334249 A1 EP3334249 A1 EP 3334249A1
Authority
EP
European Patent Office
Prior art keywords
spacer
induction coil
cover plate
induction
leg
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP17201765.9A
Other languages
English (en)
French (fr)
Other versions
EP3334249B1 (de
Inventor
Marko Kreca
Benjamin KLAUZAR
Gregor MLINARIC
Milan VIVOD
Drazen DJUKIC
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.)
Gorenje gospodinjski aparati dd
Original Assignee
Gorenje gospodinjski aparati dd
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 Gorenje gospodinjski aparati dd filed Critical Gorenje gospodinjski aparati dd
Priority to PL17201765T priority Critical patent/PL3334249T3/pl
Publication of EP3334249A1 publication Critical patent/EP3334249A1/de
Application granted granted Critical
Publication of EP3334249B1 publication Critical patent/EP3334249B1/de
Active legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1263—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements using coil cooling arrangements
    • 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
    • H05B2206/00—Aspects relating to heating by electric, magnetic, or electromagnetic fields covered by group H05B6/00
    • H05B2206/02—Induction heating
    • H05B2206/022—Special supports for the induction coils
    • 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 present invention relates to an induction hob comprising an induction coil and spacers to enable an air gap between the induction coil and a cover plate, and in particular the invention refers to a spacer with said induction coil.
  • the induction coil is provided with a probe which triggers power reduction of the induction coil when to high temperature is detected.
  • Said element for transfer heat to the temperature probe must be reliably mounted between the thermal insulation and the electrical insulator under the glass in order to ensure an appropriate container temperature measurement.
  • Measurement of the temperature on the induction coil is carried out by means of a probe arranged inside induction coil. Wool insulation, or spacers for providing an air gap between the induction coil and a glass cover plate, or any other suitable thermal insulation material is used as an excess temperature protection.
  • wool insulation is used exclusively as a thermal protection which supposed to ensure an accurate arrangement of the element for heat transfer. In case that said element for heat transfer is displaced, heat transfer to the temperature probe can decrease resulting in irregular reading of temperature.
  • a spacer according to the invention also provides for a proper mounting of an element for transfer heat to a temperature probe.
  • the spacer for heat transfer reliably and properly rests against both the induction coil and the glass cover plate with no possibility, whatsoever, to slip out of the position thereof.
  • Induction hob comprises a cover plate 1, preferably a glass or glass ceramic plate or a plate of other suitable material, having a cooking surface 2 for receiving a container with a medium to be heated, and at least one inductor 3 provided for heating said medium arranged under the cover plate 1 in each section under the cooking area.
  • Said inductor 3 is via an electrical insulation means 4 in close connection with a lower surface 5 of the cover plate 1, so that the distance between the inductor 3 and the container with the medium to be heated is smallest possible.
  • Said inductor 3 comprises an induction coil 6 which is arranged, spaced from the cover plate 1 and, respectively, from said insulation means 4, on the underside of the cover plate 1.
  • Said spacing provided by at least one spacer 7, preferably with a plurality of spacers 7, provides an appropriate air gap t between the induction coil 6 and the cover plate 1 and, respectively, said insulation means 4.
  • the air gap t acts as a thermal insulator.
  • Said spacers 7 are preferably equally spaced arranged over the circumference of the induction coil 6, particularly in a preferred way, that each spacer 7 extends approximately from the central region of the induction coil 6 towards the outside border thereof.
  • a plurality of guiding elements for magnetic flux 8 preferably made on the basis of ferrites.
  • the induction coil 6 is fed by energy via connectors 9.
  • a temperature probe 10 which sends via a line 11 information about temperature conditions in the inductor.
  • the temperature probe 10 senses temperature only locally in a single point.
  • an element 12 for heat transfer from the container with medium to be heated to the temperature probe 10 is associated with the temperature probe 10, preferably in the region between the insulation means 4 and the induction coil 6.
  • Said element 12 for heat transfer is formed as a one-leg or a multi-leg element, for example, the legs 13 thereof are arranged in the plane of the induction coil 6.
  • Each leg 13 of the element 12 for heat transfer cooperates with the spacer 7 which presses said leg 13 towards the cover plate 1 and, respectively, towards said insulation means 4.
  • the element 12 for heat transfer must rests precisely and reliably against the temperature probe 10 as well as against the cover plate 1 and, respectively, against said insulation means 4, thus, enabling reliable, repeatable and accurate reading of the temperature.
  • the element 12 for heat transfer must be unmoveably fixed in the inductor.
  • Said fixed position of the element 12 for heat transfer is realized with said at least one spacer 7.
  • the spacer 7 is formed either at its surface which cooperates with the cover plate 1 and, respectively, with said insulation means 4, and/or its surface which cooperates with the induction coil 6, with at least one groove 14 provided to accommodate said leg 13 of the element 12 for heat transfer.
  • Said groove 14 extends at least over a part of the length of the spacer 7. The depth of said groove 14 essentially equals the thickness of the leg 13.
  • the spacer 7 can be made either of resilient material or of stiff material. With the preferred embodiment is provided that the spacer 7 is made of synthetic resilient material, particularly preferably of temperature resistant resilient material such as of silicon rubber for example. The elasticity of the spacer 7 enables for the leg 13 of the element 12 for heat transfer located in the groove 14 to tightly rest against the cover plate 1 and, respectively, against the insulation means 4. When the spacer 7 is made of stiff material, resting of the element 12 for heat transfer against the lower surface 5 of the cover plate 1 and, respectively against the electrical insulation means 4 can be achieved by additional elastic means.
  • each spacer 7 is associated by means of an adhesion means and/or by means of a mechanical means with the insulation means 4 and/or with the induction coil 6.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • General Induction Heating (AREA)
  • Induction Heating Cooking Devices (AREA)
EP17201765.9A 2016-12-12 2017-11-15 Abstandshalter mit einer induktionsspule eines induktionskochfelds Active EP3334249B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL17201765T PL3334249T3 (pl) 2016-12-12 2017-11-15 Element dystansowy dla cewki indukcyjnej w płycie indukcyjnej

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
SI201600299A SI25336A (sl) 2016-12-12 2016-12-12 Distančni element pri indukcijski tuljavi indukcijskega kuhališča

Publications (2)

Publication Number Publication Date
EP3334249A1 true EP3334249A1 (de) 2018-06-13
EP3334249B1 EP3334249B1 (de) 2019-08-07

Family

ID=60473287

Family Applications (1)

Application Number Title Priority Date Filing Date
EP17201765.9A Active EP3334249B1 (de) 2016-12-12 2017-11-15 Abstandshalter mit einer induktionsspule eines induktionskochfelds

Country Status (3)

Country Link
EP (1) EP3334249B1 (de)
PL (1) PL3334249T3 (de)
SI (1) SI25336A (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4096363A1 (de) * 2021-05-28 2022-11-30 LG Electronics Inc. Elektroherd

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1686836A1 (de) * 2005-01-31 2006-08-02 E.G.O. ELEKTRO-GERÄTEBAU GmbH Träger für eine Induktionsspule, Induktionsheizeinrichtung, Induktionskochfeld und Verfahren zum Herstellen einer Induktionsheizeinrichtung
DE102008020150A1 (de) * 2007-04-27 2008-10-30 BSH Bosch und Siemens Hausgeräte GmbH Kocheinheitsvorrichtung
EP2775785A1 (de) * 2013-03-08 2014-09-10 Electrolux Appliances Aktiebolag Induktionskochfeld

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1686836A1 (de) * 2005-01-31 2006-08-02 E.G.O. ELEKTRO-GERÄTEBAU GmbH Träger für eine Induktionsspule, Induktionsheizeinrichtung, Induktionskochfeld und Verfahren zum Herstellen einer Induktionsheizeinrichtung
DE102008020150A1 (de) * 2007-04-27 2008-10-30 BSH Bosch und Siemens Hausgeräte GmbH Kocheinheitsvorrichtung
EP2775785A1 (de) * 2013-03-08 2014-09-10 Electrolux Appliances Aktiebolag Induktionskochfeld

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4096363A1 (de) * 2021-05-28 2022-11-30 LG Electronics Inc. Elektroherd

Also Published As

Publication number Publication date
EP3334249B1 (de) 2019-08-07
PL3334249T3 (pl) 2019-12-31
SI25336A (sl) 2018-06-29

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