EP3262895A1 - Appareil de cuisson à induction à rendement de cuisson accru - Google Patents

Appareil de cuisson à induction à rendement de cuisson accru

Info

Publication number
EP3262895A1
EP3262895A1 EP15706254.8A EP15706254A EP3262895A1 EP 3262895 A1 EP3262895 A1 EP 3262895A1 EP 15706254 A EP15706254 A EP 15706254A EP 3262895 A1 EP3262895 A1 EP 3262895A1
Authority
EP
European Patent Office
Prior art keywords
subzones
power level
flexible
cooking appliance
driving units
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Withdrawn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
EP15706254.8A
Other languages
German (de)
English (en)
Inventor
Serdar Gokhan DOGANAY
Selcuk SOYYIGIT
Gamze DAG
Ugur Camli
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.)
Arcelik AS
Original Assignee
Arcelik AS
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 Arcelik AS filed Critical Arcelik AS
Publication of EP3262895A1 publication Critical patent/EP3262895A1/fr
Withdrawn legal-status Critical Current

Links

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
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate

Definitions

  • the present invention relates to an induction cooking appliance, in particular to a so-called “flexible” induction cooking appliance in which two individual subzones each for separately heating a comparatively small cookware can be combined into a single zone for jointly heating a comparatively large cookware.
  • a flexible induction cooking appliance generally comprises a top surface which has a flexible zone for inductively heating a comparatively large cookware, wherein the flexible zone includes two side-by-side subzones each for inductively and individually heating a comparatively small cookware, two induction coils which are respectively arranged under the two subzones and two driving units each for driving a corresponding induction coil at one of a plurality of preset power levels which define a discrete power range.
  • the control unit In the flexible induction cooking appliance, the control unit generally allows, in the flexible mode, a user to combine the two subzones so as to jointly heat a comparatively large cookware and to select a preset power level.
  • the control unit generally causes in the flexible mode the driving units of the combined two subzones to drive the corresponding induction coils respectively at the selected preset power level.
  • the available preset power levels are usually limited.
  • the driving units In the flexible induction cooking appliance, the driving units generally comprise quasi-resonant inverters which have limited regulation ranges for setting the power levels.
  • the minimum settable power level in the quasi-resonant inverter is commonly about 700 Watts to 800 Watts.
  • Resonant half-bridge inverters are also commonly used in the flexible induction cooking appliances. The resonant half-bridge inverters have improved regulation ranges for setting the power levels, but are relatively cost-intensive.
  • a drawback of the flexible induction cooking appliance is that some food products such as chocolate which particularly require gentle cooking conditions can easily scorch when they are jointly heated through the subzones of the flexible zone even when the minimum settable power level is selected.
  • An objective of the present invention is to provide an induction cooking appliance which overcomes the aforementioned drawbacks of the prior art in a cost-effective way and which enables an improved cooking performance.
  • the control unit allows in the flexible modes the user to select two or more than two side-by-side subzones in the same flexible zone and a common power level.
  • the common power level is not limited to the power range of the individual driving units and can assume, in the flexible modes, values which lie inside or even outside said power range depending on the user-selection.
  • control unit turns in the flexible mode each of the driving units which correspond to the selected side-by-side subzones ON or OFF in accordance with a respective routine in which each corresponding induction coil is driven at a respective power level within said power range such that the average power for the selected side-by-side subzones over a predetermined period equals to the respectively selected common power level.
  • the users are enabled to more flexibly heat food products in a relatively broad power range which extends across the upper or lower limits of the power range of the individual driving units of the induction cooking appliance.
  • the present invention particularly the food products which require gentle heating conditions can be treated more adequately. Thereby, the risk of scorching has been eliminated or reduced as much as possible.
  • the cooking performance of the induction cooking appliance at relatively low power levels has been improved.
  • the usability of the induction cooking appliance has been further improved. Thereby, the customer satisfaction can be further increased.
  • the user can initiate one or more than one instances of flexible modes for cooking in a same flexible zone and separately therefrom, if desired, concurrently in another flexible zone.
  • the user can select in one of the flexible zones with four side-by-side subzones, the two rear side-by-side subzones and a respective common power level and independently therefrom the two front side-by-side subzones and another respective common power level.
  • each instance of flexible mode can be conducted concurrently with one or more than one instances of single modes for cooking in an individual subzone of any flexible zone and separately therefrom, if desired, concurrently in an individual subzone in any other flexible zone.
  • the user can select in one of the flexible zones with four side-by-side subzones, the two rear side-by-side subzones and a respective common power level and independently therefrom in the single mode, the front subzone and another respective common power level.
  • the flexible modes include a flexible mode for gentle cooking.
  • the flexible mode for gentle cooking is activated, then in the ON/OFF routines the corresponding induction coils are driven at power levels which are as close as possible to the lowest power level of the power range of the individual driving units. Thereby, the food products can be gently cooked and prevented from experiencing instantaneously high temperatures in the flexible mode.
  • the flexible mode for gentle cooking is activated when the user selects a common power level which is close to, or particularly smaller than the lowest power level of the power range of the individual driving units.
  • the ON/OFF routines in the flexible/single modes can be defined in many different ways.
  • some or all of the corresponding driving units can be turned in various intervals of the predetermined period simultaneously ON or OFF.
  • the predetermined periods may comprise one or more than one interval.
  • the intervals may have same or different durations.
  • the corresponding driving units are turned, in some or in all of the intervals of the predetermined period, sequentially ON. Thereby, the food products inside the large cookware can be uniformly cooked in the flexible modes.
  • the top surface is divided into two or three separate flexible zones which are elongated in the forward/rearward direction.
  • Each flexible zone has an array of subzones which are elongated in the left/right direction. Thereby, the user can more flexibly use the top surface.
  • the induction coils have shapes which match the subzones.
  • the induction coils may be identical with each other, or at least some of the induction coils may be different.
  • the driving units have quasi-resonant inverters and/or resonant half-bridge inverters which can drive the induction coils at power levels down to a few hundred Watts. Also other type of inverters known to those skilled in the art can be used.
  • Figure 1 – is a schematic view of an induction cooking appliance according to an embodiment of the present invention, wherein the dashed lines show the zones and the subzones and the hatched areas show various cookwares.
  • the induction cooking appliance (1) of the present invention comprises a top surface (2) which has one or more than one flexible zone (3, 4, 5) each for inductively heating a comparatively large cookware (6, 7, 8), wherein each flexible zone (3, 4, 5) comprises two or more than two side-by-side subzones (9) each for inductively heating a comparatively small cookware (10), induction coils (11) which are arranged under the subzones (9) respectively, driving units each for separately driving a corresponding induction coil (11) respectively at a power level within a power range defined by a lowest power level and a highest power level and a control unit (12) which has a plurality of flexible modes.
  • the control unit (12) is adapted in the flexible modes to allow a user to select two or more than two side-by-side subzones (9) in the same flexible zone (3, 4, 5) and a common power level which can be smaller than said lowest power level or within said power range or larger than said highest power level and to turn each of the driving units which correspond to the selected side-by-side subzones (9) ON or OFF in accordance with a respective routine in which each corresponding induction coil (11) is driven at a respective power level within said power range such that the average power for the selected side-by-side subzones (9) over a predetermined period equals to the respectively selected common power level (Fig.1).
  • the flexible modes include a flexible mode for gentle cooking.
  • the control unit (12) is adapted in the flexible mode for gentle cooking to turn each of the driving units which correspond to the selected side-by-side subzones (9) ON or OFF in accordance with the respective routine in which each corresponding induction coil (11) is driven at a respective power level as close as possible to the lowest power level such that the average power for the selected side-by-side subzones (9) over the predetermined period equals to the respectively selected common power level.
  • control unit (12) is further adapted to execute the flexible mode for gentle cooking when the user selects two or more than two side-by-side subzones (9) in the same flexible zone (3, 4, 5) and a common power level which is smaller than said lowest power level.
  • control unit (12) is adapted in the flexible modes to turn the driving units which correspond to the selected side-by-side subzones (9) sequentially ON or OFF.
  • control unit (12) is further adapted in the flexible modes to avoid turning all of the driving units which correspond to the selected side-by-side subzones (9) simultaneously ON.
  • control unit (12) is further adapted in the flexible modes, where the user has selected three side-by-side subzones (9) in the same flexible zone (4), to turn each of the corresponding three driving units ON or OFF in accordance with a respective routine in which the predetermined period comprises a time interval during which the driving units corresponding to the mutually furthest selected subzones (9) are turned ON and the driving unit corresponding to the intermediate selected subzone (9) is turned OFF and another time interval during which the driving units corresponding to the mutually furthest selected subzones (9) are turned OFF and the driving unit corresponding to the intermediate selected subzone (9) is turned ON.
  • control unit (12) is further adapted in the flexible modes where the user has selected three side-by-side subzones (9) in the same flexible zone (4), to turn each of the corresponding three driving units ON or OFF in accordance with a respective routine in which said predetermined period comprises a time interval during which the driving units corresponding to the selected two rear side-by-side subzones (9) are turned ON and the driving unit corresponding to the selected front subzone (9) is turned OFF and another interval during which the driving units corresponding to the selected two front side-by-side subzones (9) are turned ON and the driving unit corresponding to the selected rear subzone (9) is turned OFF.
  • the top surface (2) has two separate side-by-side rectangular flexible zones (3, 5) each elongated in the forward/rearward direction, wherein the left flexible zone (3) has an array of four side-by-side rectangular subzones (9), wherein the right flexible zone (5) has an array of four side-by-side rectangular subzones (9) and wherein the side-by-side rectangular subzones (9) are elongated in the left/right direction and each has an equal size.
  • the top surface (2) has three separate side-by-side rectangular flexible zones (3, 4, 5) each elongated in the forward/rearward direction, wherein the left flexible zone (3) has an array of four side-by-side rectangular subzones (9), wherein the mid flexible zone (4) has an array of three side-by-side rectangular subzones (9), wherein the right flexible zone (5) has an array of four side-by-side rectangular subzones (9) and wherein the side-by-side rectangular subzones (9) are elongated in the left/right direction and each has an equal size.
  • the induction coils (11) are identical and oval shaped so as to match the subzones (9) respectively.
  • the driving units comprise quasi-resonant inverters, wherein the lowest power level is in the range of 700 Watts to 800 Watts.
  • the driving units comprise resonant half-bridge inverters, wherein the lowest power level is about 500 Watts.
  • control unit (12) further comprises a plurality of single modes.
  • the control unit (12) is adapted in the single modes to allow a user to singly select a subzone (9) in any flexible zone (3, 4, 5) and a common power level which can be smaller than said lowest power level or within said power range and to turn the driving unit which correspond to the singly selected subzone (9) ON or OFF in accordance with a respective routine in which the corresponding induction coil (11) is driven at a respective power level within said power range such that the average power for the singly selected subzone (9) over a predetermined period equals to the respectively selected common power level.
  • the single modes include a single mode for gentle cooking.
  • the control unit (12) is adapted in the single mode for gentle cooking to turn the driving unit which corresponds to the singly selected subzone (9) ON or OFF in accordance with a respective routine in which the corresponding induction coil (11) is driven at a respective power level as close as possible to the lowest power level such that the average power for the singly selected subzone (9) over the predetermined period equals to the respectively selected common power level.
  • control unit (12) is further adapted to execute the single mode for gentle cooking when the user singly selects a subzone (9) in any flexible zone (3, 4, 5) and a common power level which is smaller than said lowest power level.

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

La présente invention concerne un appareil de cuisson à induction (1) comprenant une surface supérieure (2) qui comporte une zone flexible (3, 4, 5) ayant deux sous-zones côte-à-côte (9), deux bobines d'induction (11), deux unités de commande, chacune servant à commander une bobine correspondante (11) dans une gamme de puissance et une unité de commande (12) avec un mode flexible. Dans l'appareil de cuisson à induction (1) de la présente invention, l'unité de commande (12), dans le mode flexible, permet à un utilisateur de sélectionner les deux sous-zones (9) et un niveau de puissance commun à l'intérieur ou à l'extérieur de ladite plage de puissance et met en marche/à l'arrêt chacune des unités de commande correspondant aux deux sous-zones sélectionnées (9) en fonction d'un sous-programme respectif dans lequel chaque bobine d'induction correspondante (11) est commandée à un niveau de puissance respectif à l'intérieur de ladite plage de puissance de telle sorte que la puissance moyenne pour les deux sous-zones sélectionnées (9) sur une période est égale au niveau de puissance commun.
EP15706254.8A 2015-02-26 2015-02-26 Appareil de cuisson à induction à rendement de cuisson accru Withdrawn EP3262895A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/EP2015/054064 WO2016134779A1 (fr) 2015-02-26 2015-02-26 Appareil de cuisson à induction à rendement de cuisson accru

Publications (1)

Publication Number Publication Date
EP3262895A1 true EP3262895A1 (fr) 2018-01-03

Family

ID=52577871

Family Applications (1)

Application Number Title Priority Date Filing Date
EP15706254.8A Withdrawn EP3262895A1 (fr) 2015-02-26 2015-02-26 Appareil de cuisson à induction à rendement de cuisson accru

Country Status (2)

Country Link
EP (1) EP3262895A1 (fr)
WO (1) WO2016134779A1 (fr)

Families Citing this family (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10605464B2 (en) 2012-10-15 2020-03-31 Whirlpool Corporation Induction cooktop
ITTO20120896A1 (it) 2012-10-15 2014-04-16 Indesit Co Spa Piano cottura a induzione
EP3432682A1 (fr) 2017-07-18 2019-01-23 Whirlpool Corporation Procédé de fonctionnement d'une plaque de cuisson par induction et plaque de cuisson faisant appel à un tel procédé
US10993292B2 (en) 2017-10-23 2021-04-27 Whirlpool Corporation System and method for tuning an induction circuit
ES2719650A1 (es) * 2018-01-08 2019-07-11 Bsh Electrodomesticos Espana Sa Dispositivo de campo de coccion
US11140751B2 (en) 2018-04-23 2021-10-05 Whirlpool Corporation System and method for controlling quasi-resonant induction heating devices
EP3767180A1 (fr) * 2019-07-19 2021-01-20 Electrolux Appliances Aktiebolag Plaque de cuisson doté de zones de chauffage avec différentes températures

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004003126B4 (de) * 2004-01-14 2012-02-23 E.G.O. Elektro-Gerätebau GmbH Ansteuerungsverfahren für Heizelemente und Vorrichtung
FR2872258B1 (fr) * 2004-06-25 2006-11-10 Brandt Ind Sas Table de cuisson a plusieurs zones de cuisson
ES2356780B1 (es) * 2009-01-20 2012-03-13 Bsh Electrodomésticos España, S.A. Campo de cocción con al menos una zona de calentamiento de varios elementos de calentamiento.
EP2731402B1 (fr) * 2012-11-09 2015-08-19 Electrolux Home Products Corporation N.V. Procédé permettant de commander une plaque de cuisson à induction avec plusieurs bobines d'induction et plaque de cuisson à induction
WO2015015361A1 (fr) * 2013-07-31 2015-02-05 BSH Bosch und Siemens Hausgeräte GmbH Système de table de cuisson

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
None *
See also references of WO2016134779A1 *

Also Published As

Publication number Publication date
WO2016134779A1 (fr) 2016-09-01

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