EP2574144B1 - Procédé de chauffage d'un récipient de cuisson au moyen d'un dispositif de chauffage à induction et dispositif de chauffage à induction - Google Patents
Procédé de chauffage d'un récipient de cuisson au moyen d'un dispositif de chauffage à induction et dispositif de chauffage à induction Download PDFInfo
- Publication number
- EP2574144B1 EP2574144B1 EP12185392.3A EP12185392A EP2574144B1 EP 2574144 B1 EP2574144 B1 EP 2574144B1 EP 12185392 A EP12185392 A EP 12185392A EP 2574144 B1 EP2574144 B1 EP 2574144B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- cooking vessel
- induction heating
- resonant circuit
- parameter value
- energy
- 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.)
- Active
Links
- 238000010438 heat treatment Methods 0.000 title claims description 64
- 238000010411 cooking Methods 0.000 title claims description 46
- 230000006698 induction Effects 0.000 title claims description 42
- 238000000034 method Methods 0.000 title claims description 29
- 230000010355 oscillation Effects 0.000 claims description 7
- 230000001419 dependent effect Effects 0.000 claims description 6
- 230000001105 regulatory effect Effects 0.000 claims 1
- 230000005284 excitation Effects 0.000 description 11
- 239000003990 capacitor Substances 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 239000004065 semiconductor Substances 0.000 description 3
- 230000002123 temporal effect Effects 0.000 description 3
- 241000467686 Eschscholzia lobbii Species 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 230000007423 decrease Effects 0.000 description 2
- 230000005294 ferromagnetic effect Effects 0.000 description 2
- 230000001939 inductive effect Effects 0.000 description 2
- 230000008859 change Effects 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- 239000003302 ferromagnetic material Substances 0.000 description 1
- 239000002241 glass-ceramic Substances 0.000 description 1
- 230000005291 magnetic effect Effects 0.000 description 1
- 230000005415 magnetization Effects 0.000 description 1
- 238000012544 monitoring process Methods 0.000 description 1
- 230000003534 oscillatory effect Effects 0.000 description 1
- 230000000737 periodic effect Effects 0.000 description 1
- 230000010363 phase shift Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
- 230000004044 response Effects 0.000 description 1
- 238000001228 spectrum Methods 0.000 description 1
- 230000000638 stimulation Effects 0.000 description 1
- 230000000007 visual effect Effects 0.000 description 1
- 229910000859 α-Fe Inorganic materials 0.000 description 1
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
- 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 method for heating a cooking vessel by means of an induction heater and an induction heater for performing the method.
- In Indutationsloom acquired an alternating magnetic field is generated by means of an induction heating, which induces eddy currents in a heated cooking vessel with a bottom of ferromagnetic material and causes loss of magnetization, whereby the cooking vessel is heated.
- the induction heating coil is part of a resonant circuit comprising the induction heating coil and one or more capacitors.
- the induction heating coil is usually designed as a flat, spirally wound coil with associated ferrite cores and arranged, for example, under a glass ceramic surface of an induction hob.
- the induction heating coil forms an inductive and a resistive part of the resonant circuit in conjunction with the cookware to be heated.
- a low-frequency AC mains voltage is first rectified with a mains frequency of, for example, 50 Hz or 60 Hz and then converted by means of semiconductor switches into an excitation or drive signal of higher frequency.
- the excitation signal or the drive voltage is usually a square-wave voltage with a frequency in a range from 20 kHz to 50 kHz.
- a circuit for generating the excitation signal is also referred to as a (frequency) converter.
- a frequency of the excitation signal or of the rectangular voltage is changed as a function of the heat output to be delivered or fed in or of the desired power consumption.
- This method for adjusting the heating power output makes use of the fact that with a stimulation of the resonant circuit with its resonant frequency, a maximum heat output occurs. The greater the difference between the frequency of the excitation signal and the resonant frequency of the resonant circuit, the smaller the output of heating power.
- the induction heating device has a plurality of oscillation circuits, for example, if the induction heating device forms an induction hob with different induction cookers and different heating powers are set for the oscillating circuits, beats may be caused by superimposing the different frequencies of the excitation signals, which may lead to disturbing noises.
- a method for heating power adjustment which avoids noise due to such beats, is a pulse width modulation of the excitation signal at constant excitation frequency, in which an effective value of a heating power is adjusted by changing the pulse width of the excitation signal.
- RMS control by changing the pulse width at a constant excitation frequency, however, high on and off currents in the semiconductor switches, whereby a broadband and high-energy interference spectrum is caused.
- the DE 10 2009 047 185 A1 discloses a method and an induction heater in which temperature dependent ferromagnetic properties of the cooking vessel bottom are measured at high resolution and evaluated to determine the temperature of the cooking vessel bottom.
- the DE 102 31 122 A1 shows a method for measuring the temperature of a metallic cooking vessel, wherein at a boiling point, a resonant circuit parameter can be detected, which is used as a setpoint for a control.
- the DE 102 53 198 A1 shows a method for thermally monitoring an inductively heatable cooking vessel by evaluating a frequency of an inductive heating causing AC, such boiling is detected.
- the WO 2007/124008 A2 and the WO 2010/080738 A1 each show cooking process in which a given amount of energy is fed into a cooking vessel. After feeding the predetermined amount of energy, a respective cooking process is terminated.
- the invention has for its object to provide a method for heating a cooking vessel by means of an induction heater and an induction heater for performing the method, which, in particular based on the in the DE 10 2009 047 185 A1 revealed measuring principle, a temperature-controlled or temperature-controlled cooking allow.
- the invention achieves this object by a method having the features of claim 1 and an induction heater having the features of claim 7.
- the method according to the invention serves for heating a cooking vessel, in particular in the form of a (frying) pan, by means of an induction heating device, wherein the induction heating device comprises a resonant circuit with an induction heating coil.
- the method comprises the following steps: feeding a predetermined amount of energy into the cooking vessel by means of the induction heater as a function of a selected by a user Schuzzisshake and / or of a user selected cooking vessel type, then determining and storing a self-adjusting parameter value of the resonant circuit, in particular one Self-resonant frequency of the resonant circuit or belonging to the natural resonant frequency period which is dependent on a temperature of the cooking vessel, in particular the cooking vessel bottom, and controlling the at least one parameter value to a desired value, which depends on the stored parameter value.
- the setpoint value of the parameter value is equal to the stored parameter value.
- a signal is output to a user after feeding the predetermined amount of energy into the cooking vessel.
- the cooking vessel is subjected to a predetermined heating power for a predetermined settling time.
- the settling time is selected between one second and 10 seconds, preferably equal to 5 seconds
- the predetermined heating power is selected between 10% and 50%, preferably equal to 25%, of a rated heating power.
- the induction heater includes: an oscillation circuit having an induction heating coil, means for measuring the input energy, and a controller configured to perform the above-mentioned method.
- Fig. 1 schematically shows an induction heater 9 with a resonant circuit 4, which has a Indu mecanicsmosspule 1 and capacitors 2 and 3, a power section 7 controlled by a control device 8 conventionally rectified a low-frequency mains AC voltage UN with a mains frequency of 50Hz, for example, and then by means not shown semiconductor switches in converts a square-wave voltage UR with a frequency in a range from 20 kHz to 50 kHz, the resonant circuit 4 or its induction heating coil 1 being supplied with the square-wave voltage UR in order to feed heating power into a ferromagnetic bottom of a cooking vessel 5, and a device 10 for measuring the energy fed into the cooking vessel 5.
- the capacitors 2 and 3 are conventionally looped in series between poles UZK + and UZK- an intermediate circuit voltage, wherein a connection node of the capacitors 2 and 3 is connected to a terminal of the induction heating coil 1.
- the induction heating device 9 has measuring means (not shown in greater detail) which provide a continuous or periodic determination of a parameter value of the oscillating circuit 4 in the form of a period Tp (see FIG Fig. 2 ) allow a self-resonant oscillation of the resonant circuit 4, wherein the period Tp of the temperature of the cooking vessel bottom is dependent, ie with increasing temperature also increases, as the temperature of the cooking vessel bottom, the effective inductance increases, so that the resonant frequency decreases and correspondingly increases the period.
- the period Tp can be determined, for example, by means of a timer of a microcontroller.
- the measuring method and the heating power setting is also on the DE 10 2009 047 185 A1 Reference is hereby made to the content of the description to avoid repetition.
- Fig. 2 shows time courses of a temperature ⁇ of the pot bottom 5, by means of in Fig. 1 shown induction heating device 9 is heated, a fed into the cooking vessel 5 by means of the induction heater heating power P (in 0.5% of a rated heat output) and the period Tp an intrinsically resonant oscillation of the resonant circuit 4 in an implementation of the method.
- the control device 8 continuously determines periodically the period Tp of a self-resonant oscillation of the resonant circuit 4, for which purpose the heating power supply is temporarily interrupted and switched over to self-resonant operation of the resonant circuit 4. Due to the low temporal resolution, these phases are in Fig. 2 not shown.
- the oscillating circuit 4 is supplied with the high-frequency square-wave voltage UR with a maximum heating power setpoint (corresponding to 100% of a nominal heating power) until, determined by the device 10, a predetermined amount of energy is fed into the cooking vessel 5 by means of the induction heating device 9, wherein the predetermined amount of energy may be dependent upon a user selected heating power level and / or on a cooking vessel type selected by the user.
- a settling interval II follows, during which the cooking vessel 5 is charged with about 25% of the rated heating power for 5 seconds.
- the instantaneous period Tp is determined and stored as the setpoint PM.
- duration Tp is controlled to the stored setpoint PM.
- the heating of cooking vessels, such as frying pans, to a suitable operating temperature according to the invention is energy controlled.
- the amount of energy given by harness mass, heat capacity, end temperature, and heat loss may be determined experimentally, stored, and re-supplied to reproduce the desired operating temperature.
- the cooking system per cooking zone, the means 10 for measuring the energy supplied.
- the cooking system provides a range of preferably 9 graded amounts of heating energy, graded so that both light and heavy frying pans can be heated to a working temperature between 140 ° C and 210 ° C.
- a user typically uses only a few different types of pans and thus can quickly learn which level is best for which pan.
- the current temperature value or a variable representative thereof is measured inductively and used as a reference variable for an (indirect) temperature control.
- the current temperature value or a variable representative thereof is measured inductively and used as a reference variable for an (indirect) temperature control.
- the user may be presented with different pans, with the user selecting the pans most similar or identical to them, and additionally the one desired Temperature enters. From this, the system can then derive the required heating energy.
- the achievement of the desired frying temperature is reported to the user by an audible and / or visual signal.
- An addition of a food in the cooking vessel 5 can be quickly recognized due to a change in the period Tp and compensated by increasing the heating power, as for example Fig. 2 at the beginning of the time interval III.
- the addition of a steak here leads to a reduction in the temperature ⁇ or the period TP, which is compensated accordingly.
- parameter value of the resonant circuit in the form of the period duration, for example an amplitude of a resonant circuit voltage, a voltage across the induction heating coil, an amplitude of a resonant circuit current and / or a phase shift between the resonant circuit voltage and the resonant circuit current ,
- the invention may also find application in the context of a parallel resonant circuit or a series resonant circuit with full bridge drive.
Landscapes
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Induction Heating Cooking Devices (AREA)
- Cookers (AREA)
- General Induction Heating (AREA)
Claims (7)
- Procédé de chauffage d'un récipient de cuisson (5) au moyen d'un dispositif de chauffage à induction (9), dans lequel le dispositif de chauffage à induction comprend un circuit oscillant (4) avec une bobine de chauffage à induction (1), comprenant l'étape suivante:- fournir une quantité prédéterminée d'énergie dans le récipient de cuisson au moyen du dispositif de chauffage à induction en fonction d'un degré de puissance de chauffage choisi par un utilisateur et/ou d'un type de récipient de cuisson sélectionné par l'utilisateur,caractérisé par les étapes suivantes:- déterminer ensuite et mémoriser une valeur de paramètre du circuit oscillant, qui est dépendante d'une température du récipient de cuisson, et- régler ladite au moins une valeur de paramètre à une valeur de consigne, qui dépend de la valeur de paramètre mémorisée.
- Procédé selon la revendication 1, caractérisé en ce que la valeur de consigne de la valeur de paramètre est égale à la valeur de paramètre mémorisée.
- Procédé selon la revendication 1 ou 2, caractérisé en ce qu'après la fourniture de la quantité prédéterminée d'énergie dans le récipient de cuisson, on émet un signal destiné à un utilisateur.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce qu'après la fourniture de la quantité prédéterminée d'énergie dans le récipient de cuisson et avant la détermination et la mémorisation de la valeur de paramètre du circuit oscillant, on expose le récipient de cuisson à une puissance de chauffage prédéterminée pendant une durée d'oscillation prédéterminée.
- Procédé selon la revendication 4, caractérisé en ce que l'on choisit la durée d'oscillation entre une seconde et 10 secondes et on choisit la puissance de chauffage prédéterminée entre 10 % et 50 % d'une puissance de chauffage nominale.
- Procédé selon l'une quelconque des revendications précédentes, caractérisé en ce que la valeur de paramètre du circuit oscillant est une durée de période (Tp) d'une oscillation de résonance propre du circuit oscillant.
- Dispositif de chauffage à induction (9) comportant:- un circuit oscillant (4) avec une bobine de chauffage à induction (1),- un dispositif (10) pour la mesure de l'énergie fournie, et- un dispositif de commande (8), qui est conçu pour mettre en oeuvre le procédé selon l'une quelconque des revendications 1 à 6.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL12185392T PL2574144T3 (pl) | 2011-09-26 | 2012-09-21 | Sposób ogrzewania naczynia do gotowania za pomocą indukcyjnego urządzenia grzejnego i indukcyjne urządzenie grzejne |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102011083386A DE102011083386A1 (de) | 2011-09-26 | 2011-09-26 | Verfahren zum Beheizen eines Kochgefäßes mittels einer Induktionsheizeinrichtung und Induktionsheizeinrichtung |
Publications (3)
Publication Number | Publication Date |
---|---|
EP2574144A2 EP2574144A2 (fr) | 2013-03-27 |
EP2574144A3 EP2574144A3 (fr) | 2013-07-17 |
EP2574144B1 true EP2574144B1 (fr) | 2016-12-21 |
Family
ID=47018803
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12185392.3A Active EP2574144B1 (fr) | 2011-09-26 | 2012-09-21 | Procédé de chauffage d'un récipient de cuisson au moyen d'un dispositif de chauffage à induction et dispositif de chauffage à induction |
Country Status (7)
Country | Link |
---|---|
US (1) | US9554424B2 (fr) |
EP (1) | EP2574144B1 (fr) |
JP (1) | JP2013073939A (fr) |
CN (1) | CN103068086B (fr) |
DE (1) | DE102011083386A1 (fr) |
ES (1) | ES2616103T3 (fr) |
PL (1) | PL2574144T3 (fr) |
Families Citing this family (15)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR102060691B1 (ko) | 2011-09-06 | 2020-02-11 | 브리티시 아메리칸 토바코 (인베스트먼츠) 리미티드 | 가열식 흡연가능 재료 |
US11924930B2 (en) | 2015-08-31 | 2024-03-05 | Nicoventures Trading Limited | Article for use with apparatus for heating smokable material |
US20170055584A1 (en) | 2015-08-31 | 2017-03-02 | British American Tobacco (Investments) Limited | Article for use with apparatus for heating smokable material |
US20170119046A1 (en) | 2015-10-30 | 2017-05-04 | British American Tobacco (Investments) Limited | Apparatus for Heating Smokable Material |
ES2975178T3 (es) | 2015-12-02 | 2024-07-03 | Ego Elektro Geraetebau Gmbh | Método de funcionamiento de una encimera de cocción por inducción |
CN107436198B (zh) * | 2016-05-27 | 2021-03-30 | 浙江绍兴苏泊尔生活电器有限公司 | 锅具温度检测系统、方法和电磁炉 |
ES2730394T3 (es) | 2016-10-10 | 2019-11-11 | Ego Elektro Geraetebau Gmbh | Método para controlar una encimera de cocción de inducción y encimera de cocción de inducción |
DE102016219590A1 (de) * | 2016-10-10 | 2018-04-12 | E.G.O. Elektro-Gerätebau GmbH | Verfahren zum Betrieb eines Induktionskochfelds und Induktionskochfeld |
DE102016222313B4 (de) | 2016-11-14 | 2021-08-12 | E.G.O. Elektro-Gerätebau GmbH | Verfahren zum Kochen von mindestens einem Ei |
GB201705206D0 (en) | 2017-03-31 | 2017-05-17 | British American Tobacco Investments Ltd | Apparatus for a resonance circuit |
DE102017210527B4 (de) | 2017-06-22 | 2021-01-14 | E.G.O. Elektro-Gerätebau GmbH | Pumpe für ein Elektrogerät und Elektrogerät mit einer Fluidführung und einer solchen Pumpe |
CN107990995A (zh) * | 2017-12-06 | 2018-05-04 | 王宝彬 | 一种测量评估电磁锅锅体温度的方法 |
CN114424674B (zh) * | 2019-09-30 | 2023-12-22 | 伊莱克斯家用电器股份公司 | 用于确定提供给感应加热元件的电流的特性的方法 |
CN112710412B (zh) * | 2019-10-25 | 2023-11-03 | 佛山市顺德区美的电热电器制造有限公司 | 电磁加热设备及其锅具标定方法和装置 |
DE102022200998A1 (de) * | 2022-01-31 | 2023-08-03 | BORA - Vertriebs GmbH & Co KG | Verfahren zur Steuerung einer Kochstelle |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007124008A2 (fr) * | 2006-04-21 | 2007-11-01 | Ameritherm, Inc. | Systeme de chauffage alimentaire |
WO2010080738A1 (fr) * | 2009-01-06 | 2010-07-15 | Access Business Group International Llc | Appareil de cuisson intelligent |
Family Cites Families (13)
Publication number | Priority date | Publication date | Assignee | Title |
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US3898410A (en) * | 1972-06-16 | 1975-08-05 | Environment One Corp | AC to RF converter circuit for induction cooking unit |
US4638418A (en) * | 1985-08-26 | 1987-01-20 | Tocco, Inc. | Power inverter |
DE4208252A1 (de) * | 1992-03-14 | 1993-09-16 | Ego Elektro Blanc & Fischer | Induktive kochstellenbeheizung |
AU2001287186A1 (en) * | 2000-08-18 | 2002-03-04 | Luxine Inc. | Induction heating and control system and method with high reliability and advanced performance features |
DE10122427A1 (de) * | 2001-05-09 | 2002-11-14 | Bsh Bosch Siemens Hausgeraete | Verfahren und Vorrichtung zur Begrenzung und/oder Steuerung der Oberflächentemperatur eines Kochfelds |
EP2164297A1 (fr) * | 2002-01-25 | 2010-03-17 | Panasonic Corporation | Appareil chauffant a induction |
DE10231122A1 (de) | 2002-07-05 | 2004-01-22 | E.G.O. Elektro-Gerätebau GmbH | Verfahren zum Messen der Temperatur eines metallischen Kochgefäßes |
DE10253198B4 (de) * | 2002-11-15 | 2007-07-05 | Electrolux Home Products Corporation N.V. | Verfahren und Vorrichtung zur thermischen Überwachung eines induktiv erwärmbaren Gargefäßes |
DE102004033115A1 (de) | 2004-07-08 | 2006-02-09 | Albert Thomann | Verfahren und Vorrichtung zur thermostatischen Kochgeschirrregelung |
EP2020826B1 (fr) * | 2006-05-11 | 2013-03-27 | Panasonic Corporation | Appareil de cuisson à chauffage par induction, procédé de cuisson à chauffage par induction, programme de cuisson à chauffage par induction, dispositif de détection de résonance acoustique, procédé de détection de résonance acoustique et programme de détection |
JP4973673B2 (ja) * | 2009-02-19 | 2012-07-11 | パナソニック株式会社 | 誘導加熱調理器 |
PL2312909T3 (pl) | 2009-10-19 | 2015-10-30 | Whirlpool Co | Sposób sterowania zasilaniem w energię ciekłej zawartości naczynia do gotowania |
DE102009047185B4 (de) | 2009-11-26 | 2012-10-31 | E.G.O. Elektro-Gerätebau GmbH | Verfahren und Induktionsheizeinrichtung zum Ermitteln einer Temperatur eines mittels einer Induktionsheizspule erwärmten Kochgefäßbodens |
-
2011
- 2011-09-26 DE DE102011083386A patent/DE102011083386A1/de not_active Withdrawn
-
2012
- 2012-09-21 ES ES12185392.3T patent/ES2616103T3/es active Active
- 2012-09-21 EP EP12185392.3A patent/EP2574144B1/fr active Active
- 2012-09-21 PL PL12185392T patent/PL2574144T3/pl unknown
- 2012-09-26 JP JP2012211696A patent/JP2013073939A/ja active Pending
- 2012-09-26 US US13/627,807 patent/US9554424B2/en active Active
- 2012-09-26 CN CN201210449085.2A patent/CN103068086B/zh active Active
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2007124008A2 (fr) * | 2006-04-21 | 2007-11-01 | Ameritherm, Inc. | Systeme de chauffage alimentaire |
WO2010080738A1 (fr) * | 2009-01-06 | 2010-07-15 | Access Business Group International Llc | Appareil de cuisson intelligent |
Also Published As
Publication number | Publication date |
---|---|
CN103068086B (zh) | 2016-08-24 |
EP2574144A2 (fr) | 2013-03-27 |
ES2616103T3 (es) | 2017-06-09 |
DE102011083386A1 (de) | 2013-03-28 |
EP2574144A3 (fr) | 2013-07-17 |
CN103068086A (zh) | 2013-04-24 |
PL2574144T3 (pl) | 2017-06-30 |
US9554424B2 (en) | 2017-01-24 |
JP2013073939A (ja) | 2013-04-22 |
US20130087553A1 (en) | 2013-04-11 |
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