EP2528411A2 - Champ de cuisson à induction et appareil de cuisson - Google Patents

Champ de cuisson à induction et appareil de cuisson Download PDF

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Publication number
EP2528411A2
EP2528411A2 EP12004065A EP12004065A EP2528411A2 EP 2528411 A2 EP2528411 A2 EP 2528411A2 EP 12004065 A EP12004065 A EP 12004065A EP 12004065 A EP12004065 A EP 12004065A EP 2528411 A2 EP2528411 A2 EP 2528411A2
Authority
EP
European Patent Office
Prior art keywords
cooking appliance
hob
power
induction
cooking
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Withdrawn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
EP12004065A
Other languages
German (de)
English (en)
Other versions
EP2528411A3 (fr
Inventor
Dirk Urban
Markus Schuh
Andreas Jahn
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.)
Teka Industrial SA
Original Assignee
Teka Kuechentechnik 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.)
Filing date
Publication date
Application filed by Teka Kuechentechnik GmbH filed Critical Teka Kuechentechnik GmbH
Publication of EP2528411A2 publication Critical patent/EP2528411A2/fr
Publication of EP2528411A3 publication Critical patent/EP2528411A3/fr
Withdrawn legal-status Critical Current

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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
    • 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

Definitions

  • the invention relates to an induction hob with at least one hob zone for heating an inductively heatable cooking appliance, in particular a cooking or cooking container, such as a pot or a pan, and / or an inductively heatable pad or pad for keeping food or the like, with at least one the cooktop associated induction coil, with at least one adjusting means for adjusting at least one power level when heating the cooking appliance on the hob zone and at least one circuit arrangement formed for controlling and / or regulating the power output to the induction coil when setting a power level.
  • a cooking or cooking container such as a pot or a pan
  • an inductively heatable pad or pad for keeping food or the like
  • the invention enters a method for controlling and / or regulating the power output to an induction coil when heating a cooking appliance, wherein the induction coil is associated with a hob zone of an induction hob.
  • the present invention relates to an inductively heatable cooking appliance, in particular a cooking or cooking container and / or a support or the like, for use on an induction hob of the type mentioned above.
  • the invention relates to an induction cooktop arrangement with an induction cooktop and at least one inductively heatable cooking appliance, the induction cooktop having at least one cooktop zone, at least one induction coil associated with the cooktop zone, at least one adjustment means for adjusting at least one power level during heating of the cooktop on the cooktop zone and at least one electronic circuit arrangement formed for controlling and / or regulating the power output to the induction coil when setting a power level.
  • An induction hob generally includes a non-metallic platen housed in a housing, preferably of a glass-ceramic material, an induction coil for heating which is mounted in close proximity to the platen and generates an alternating magnetic field which closes in a cooking utensil mounted on the platen Platen stands. From the current-carrying coil, an alternating magnetic field is generated, which induces eddy currents in an arranged on the hob metallic cooking utensil, which heat the cooking appliance and by heat transfer and a arranged in and / or on the cooking utensil food.
  • An arrangement of electrical and electronic components of the cooktop thereby forms a circuit arrangement which enables a power supply of the coil and controls the power output to the coil and / or regulates.
  • a certain power level can be set when heating the cooking appliance.
  • a certain power level there is a determined by the amount of power delivered to the induction coil heating or heating of the cooking appliance, the degree of heating or the increase in temperature of the cooking appliance depends on the height of the selected power level.
  • the achievable in inductive heating temperature of the cooking appliance can be at least approximately control or regulate the set power level.
  • Each power stage is in this case a different power output to the induction coil or a specific current intensity, which assignment is based on a mostly empirically determined temperature-power characteristic which has been determined for a comparison cooking appliance which serves as a reference standard ,
  • the power transferred to a cooking appliance during inductive heating or the power consumed by the cooking appliance depends, inter alia, on the geometry and size of the cooking appliance, for example the diameter of a bottom portion of the cooking appliance, on the eccentricity of the position of the cooking appliance relative to an induction coil center Type of material or the material composition of the cooking appliance and the distribution of material in the cooking appliance from.
  • the geometric and / or magnetic properties of a cooking appliance that is to be heated in a current heating process deviate from the geometric and / or magnetic properties of the comparison cooking appliance as a reference standard for the determination of a stored in the circuit arrangement of the hob temperature-performance characteristic, can be more or less accurate heating of the cooking appliance when setting a certain power level.
  • the object of the present invention is to provide an induction hob, an inductively heatable cooking appliance and an induction hob arrangement and a method for controlling and / or regulating the power output to an induction coil of an induction hob each of the type mentioned above, where the aforementioned disadvantages or not occur in an attenuated form and allow a user in a simple and comfortable way, a desired degree of heating or, a desired temperature of a cooking appliance to be heated by setting a particular power level with high accuracy with low energy consumption, d. H. energy-optimized, and to achieve at low operating costs.
  • the aforementioned object is achieved in an induction hob of the type mentioned in the present invention that the provided on a set power level power output to the induction coil is variable. Accordingly, it is provided in the method according to the invention that the height of the power delivered to the induction coil when setting a specific power level is changed depending on the geometry and / or the type of material and / or the material distribution of the cooking appliance.
  • the power delivered by the hob can be user-controlled or automatically adjusted in height as needed to the power capacity of a currently cooking appliance to be heated, the power consumption of the cooking appliance depends on the geometric and / or magnetic properties of the cooking appliance.
  • the user can activate a power adjustment function via a selection key or the like, which results in that the power output to the coil when setting a changes in power level and then delivers more or less power to the coil at that power level.
  • the power adjustment function can be activated when, for example, a cookware with certain geometric or magnetic properties is to be heated, which differs from a "standard cookware" in terms of geometric and / or magnetic properties. On the other hand, if the standard cookware is to be heated, the power adjustment function remains switched off. This allows in a simple and comfortable way energy-optimized heating of the cooking appliance with low energy losses.
  • the amount of power required to achieve a desired degree of heating power output to the induction coil when setting a certain power level can be determined from an empirically determined temperature-power characteristic or - characteristic.
  • the temperature-performance characteristic or characteristic can reproduce for a reference cooking appliance as a reference standard the dependence of at least one point of the cooking appliance during the inductive heating (measured) temperature of the respective power output to the induction coil.
  • the temperature-performance curve can be determined empirically and based on measured values, wherein the temperature of the cooking device during the inductive heating is determined continuously or discontinuously for all power stages as a function of the power output to the coil at the respective power stage.
  • a temperature-power characteristic can also be calculated at least in part.
  • the temperature-power characteristic preferably comprises all adjustable power levels. From the temperature-power curve can be easily found and set a certain amount of power output to the induction coil, which is required at a set power level to a certain (predetermined and / or defined) degree of heating of the (comparison) cooking appliance to reach.
  • the invention preferably provides in this context for at least two temperature-power characteristics for at least two comparison cooking appliances with different geometry and / or with different types of material and / or different material distribution being stored in the circuit arrangement and for determining the level of the power output upon adjustment a specific power level are selectable. This makes it easy to adapt the power delivered to the coil at a set power level to the actual power consumption of a cooking appliance to be heated by selecting a suitable temperature-power characteristic.
  • Each stored temperature-power characteristic relates to the heating of a (comparative) cooking appliance with specific geometry and / or specific magnetic properties.
  • a stored temperature-power characteristic is selected, which has been determined for a comparison cooking appliance with geometric and / or magnetic properties that correspond as closely as possible to the geometric and / or magnetic properties of the currently cooking appliance to be heated.
  • the selection of a temperature-power characteristic can be user-controlled with a selection key or a switch or the like. By pressing the selection button, the user can select a specific temperature-performance curve. For this purpose, the power to be transmitted to the induction coil at the respectively set power level is then determined for a subsequent heating process of a cooking appliance, so that a desired temperature or a desired degree of heating of the cooking appliance is achieved as precisely as possible at the respectively set power level.
  • the selection key allows the manual adjustment of the power output when setting a certain power level depending on the type of container to be heated or the pad to be heated.
  • the user will select such a temperature-power-Kermline that has been determined for a comparison cooking appliance with geometric and / or magnetic properties that correspond as far as possible to the geometric and / or magnetic properties of the cooking appliance currently being heated.
  • a first temperature-power characteristic for a standard harness has been determined.
  • a second temperature-performance curve may have been determined for a harness with different geometric and / or magnetic properties compared to the standard harness. The user thus has the option to select the first temperature-Leisumgs characteristic curve when heating the standard dishes, while for heating the second harness, the second temperature-power characteristic is selectable.
  • the cooking appliance may have an identifier, in the simplest case a number read by a user and a correspondence to the selection key or the selector switch to select a suitable temperature-performance curve.
  • a detection device for automatically detecting a cooking appliance with certain geometry and / or specific type of material and / or material distribution may be provided, wherein a detected or identified cooking appliance automatically a temperature-performance curve for a comparison cooking appliance with similar or identical Assign geometry and / or type of material and / or material distribution is or is assigned.
  • the identification of a cooking appliance with a specific geometry and / or with certain magnetic properties can be based on an individual identification number, an RFID identifier or other information for identifying the cooking appliance.
  • an assignment to a specific temperature-performance curve is carried out. This ensures in a simple manner that as closely as possible "matching" temperature-performance curve is selected for a cooking appliance to be heated.
  • the circuit arrangement may have a calibration function, which for recording or Determining a temperature-power curve is formed when heating a cooking appliance on the hob zone during a heating process and for storing the recorded temperature-power characteristic in the circuit arrangement.
  • the temperature of the cooking appliance can be detected directly when determining the temperature-performance curve by a temperature sensor arranged on the cooking appliance or indirectly via the temperature change of the cooking zone when the cooking appliance is heated.
  • the temperature profile determined in this way is related to the current which has been supplied to the induction coil at the respectively set power level.
  • the calibration function may be activatable by actuation of a button or a switch, so that the user can decide whether to recreate a temperature-power characteristic or to select an already stored temperature-power characteristic for a subsequent heating operation.
  • the induction hob according to the invention in a further alternative embodiment of the invention may comprise at least one locking means that is designed to lock or for detecting the cooking appliance on the induction hob in the region of a hob zone ,
  • a positive and / or non-positive attachment of the cooking appliance to the cooking zone may be provided to a (centric) position of the cooking appliance relative to the induction coil center and / or to ensure safe contact between the cooking appliance and the surface of the hob zone.
  • a trained according to the geometry of the cooking appliance clamping or locking receptacle may be provided with which the cooking appliance can be clamped or detent attach to the hob.
  • the cooking appliance may have a special accessory as a locking means, which allows attachment to or on the induction hob and is preferably connected as needed to the cooking appliance.
  • the locking means may cooperate with the exception of a recess, recess or the like on the hob. If the cooking appliance can be locked on or on the cooking hob, this can be associated with a preferably automatic identification of the cooking appliance as such, which has certain geometric and / or magnetic properties and to which a suitable temperature-performance curve can then automatically be assigned ,
  • the hob may have a recess or receptacle whose size or geometry is adapted to the size and geometry of a particular cooking appliance. When inserting or inserting the cooking appliance in the recess or the recording, a signal can be generated, which leads to the automatic selection of a suitable temperature-power curve.
  • the height of the maximum power output to the induction coil can be set to at least two different values.
  • the maximum value can be adjustable, for example, via a menu. As a result, current peaks can be avoided, which can lead to damage to the hob and / or excessive heating of the cooking appliance. In countries where limited grid power is available, it is easily possible by the invention to adapt the level of maximum power output to the available power.
  • insulation of an outer wall and / or a bottom of the cooking appliance may be provided at least in some areas.
  • the insulation contributes to a reduction of heat losses and can be made of a material layer be formed with a compared to the (main) material of the side wall or the bottom lower thermal conductivity or a preferably air-filled area between an inner wall and an outer wall of the cooking appliance with double-walled training.
  • the insulation in the region of the side walls and an optionally present cover (a lid) of the cooking appliance is provided so that the insulation does not interfere with the power transmission through the bottom of the cooking appliance in the inductive heating of the cooking appliance.
  • the induction hob according to the invention with an induction hob and with an inductively heated cooking appliance provides for the solution of the above-mentioned problem that the output to the induction coil when setting a certain power level for heating a cooking appliance power stored in the circuit temperature-power characteristic of the same cooking appliance is controlled or is.
  • the above-described system of cooktop and cooking appliance is characterized in that the power output to the coil for preferably each power level is precisely matched to the individual power consumption of a cooking appliance with specific geometry and / or specific magnetic properties.
  • the amount of power delivered to the coil at the setting of a particular power level is taken from a temperature-power characteristic previously determined for a cooking utensil having the same geometric and / or magnetic properties. Consequently, the user does not need to learn by caution to correct the set power level for the cookware used; he can rest assured that the desired degree of heating of the cooking appliance associated with the adjustment of a power level will be achieved with high accuracy.
  • a hob arrangement 1 with an induction hob 2 and with at least one hob zone 3 for heating an inductively heatable cooking appliance 4 of the hob arrangement 1 is shown schematically.
  • the cooking appliance 4 is in the present case a pot.
  • the hob zone 3 is associated with an induction coil 5.
  • the induction coil 5 is supplied with alternating current and generates an alternating magnetic field.
  • the induction coil 5 transmits energy or power to the cooking appliance 4 by induction.
  • the alternating magnetic field in the metallic cooking appliance 4 induces eddy currents through induction of the metal of the cooking appliance 4 and therewith heat up the contents by heat transfer.
  • the induction hob 2 has at least one schematically illustrated adjusting means 7, with which it is possible to set different power levels for the heating of the cooking appliance 4 on the hob zone 3. With each set power level, a power output determined in terms of height is coupled to the induction coil 5 or, a specific power supply to the induction coil 5, so that at a set power level a certain degree of heating or a certain temperature of the cooking appliance 4 is achieved.
  • a circuit arrangement 8 is designed to control and / or regulate the power output to the induction coil 5 when setting a certain power level.
  • the power transmitted to the cooking appliance 4 varies considerably depending on the diameter of the cooking utensil 4, the eccentricity of the position of the cooking appliance 4 with respect to the induction coil center and the type of material and the material distribution of the cooking appliance 4.
  • a desired temperature of the cooking appliance 4 or a certain degree of warming is provided in the illustrated hob arrangement 1, provided when setting a power level output to the induction coil 5 in dependence on the Type of cooking appliance 4, ie, depending on the geometry and / or the nature of the material and / or the material distribution of the cooking appliance 4, if necessary, to change.
  • a selection key 9 is provided, with which a user of the hob 2 can activate a power adjustment function, which allows energy-optimized cooking with the same result.
  • the circuit arrangement 8 must be designed accordingly.
  • the power adjustment function is activated, the power delivered by the hob zone 3 is adjusted to the specific power consumption of the cooking appliance 4, which is influenced by the geometry and / or the type of material and / or the material distribution of the cooking appliance 4.
  • two different temperature-power characteristics can be stored or stored, which can be selected by pressing the selection button 9, if necessary.
  • Each temperature-power characteristic describes the dependence of the temperature or the degree of heating of a cooking appliance 4 with certain geometric and / or magnetic properties of the induction power supplied to the induction coil. It is understood that the term "temperature-power characteristic" may relate to any general relationship between the temperature of the cooking appliance 4 when it is heated and the power output to the induction coil 5.
  • the amount of power required to reach a specific temperature or a specific degree of heating of a cooking appliance 4 to the induction coil can be determined from the temperature-power characteristic curve.
  • at least two different temperature-power characteristics are stored, which are matched to cooking appliances 4 with different geometry and / or different magnetic properties.
  • the user can specify by pressing the selection button 9, whether the amount of power to the induction coil 5 at setting a certain power level is taken from a first temperature-power characteristic or a second temperature-power characteristic, depending on the type of cooking appliance 4 to be heated. This makes it possible for the user in a simple manner and with high accuracy to achieve a desired target temperature even with differently shaped cooking appliances 4 by setting a specific power level.

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Electric Stoves And Ranges (AREA)
  • Induction Heating Cooking Devices (AREA)
EP12004065A 2011-05-25 2012-05-24 Champ de cuisson à induction et appareil de cuisson Withdrawn EP2528411A3 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE201110103140 DE102011103140A1 (de) 2011-05-25 2011-05-25 Induktionskochfeld und Kochgerät

Publications (2)

Publication Number Publication Date
EP2528411A2 true EP2528411A2 (fr) 2012-11-28
EP2528411A3 EP2528411A3 (fr) 2013-02-13

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP12004065A Withdrawn EP2528411A3 (fr) 2011-05-25 2012-05-24 Champ de cuisson à induction et appareil de cuisson

Country Status (2)

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EP (1) EP2528411A3 (fr)
DE (1) DE102011103140A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4108992A1 (fr) * 2021-06-21 2022-12-28 Miele & Cie. KG Système de cuisson et procédé de fonctionnement

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102012109204A1 (de) * 2012-09-28 2014-04-03 Miele & Cie. Kg Garsystem

Family Cites Families (10)

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Publication number Priority date Publication date Assignee Title
US3786219A (en) * 1971-12-27 1974-01-15 Gen Electric Solid state induction cooking systems for ranges and surface cooking units
US4352000A (en) * 1979-08-10 1982-09-28 Sanyo Electric Co., Ltd. Induction heating cooking apparatus
JP2862569B2 (ja) * 1989-06-30 1999-03-03 株式会社東芝 電磁調理器
DE9205363U1 (fr) * 1992-04-18 1992-08-20 Bartels, Gerhard, 3000 Hannover, De
HUP9802079A3 (en) * 1995-06-21 2000-03-28 Perejaslavskijj Vasilijj Grigo Induction electrical heater
DE202005010652U1 (de) * 2005-07-05 2005-10-27 Pohst, Norbert Gefäß zum Erwärmen von Speisen o.dgl.
DE102007012379A1 (de) * 2007-03-14 2008-09-18 BSH Bosch und Siemens Hausgeräte GmbH Kochfeldvorrichtung
JP5313176B2 (ja) * 2008-02-19 2013-10-09 パナソニック株式会社 誘導加熱調理器
DE102008054909A1 (de) * 2008-12-18 2010-07-01 BSH Bosch und Siemens Hausgeräte GmbH Verfahren zum Betreiben eines elektrischen Lebensmittelzubereitungsgeräts
ES2351293B1 (es) * 2009-03-11 2011-11-21 Bsh Electrodomesticos España, S.A. Aparato de calentamiento por inducción y procedimiento para su puesta en funcionamiento.

Non-Patent Citations (1)

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Title
None

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP4108992A1 (fr) * 2021-06-21 2022-12-28 Miele & Cie. KG Système de cuisson et procédé de fonctionnement

Also Published As

Publication number Publication date
EP2528411A3 (fr) 2013-02-13
DE102011103140A1 (de) 2012-11-29

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