EP3484242A1 - Induction cooking device - Google Patents
Induction cooking device Download PDFInfo
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- EP3484242A1 EP3484242A1 EP18200586.8A EP18200586A EP3484242A1 EP 3484242 A1 EP3484242 A1 EP 3484242A1 EP 18200586 A EP18200586 A EP 18200586A EP 3484242 A1 EP3484242 A1 EP 3484242A1
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- EP
- European Patent Office
- Prior art keywords
- time interval
- induction heating
- phase shift
- heating elements
- operating state
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- 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.)
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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
- H05B6/065—Control, e.g. of temperature, of power for cooking plates or the like using coordinated control of multiple induction coils
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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
- H05B6/10—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
Definitions
- the invention relates to an induction cooking appliance apparatus according to the preamble of claim 1 and to a method for operating an induction cooking appliance apparatus according to the preamble of claim 11.
- An induction cooking appliance device with two induction heating elements, which form a common heating zone, is already known from the prior art.
- a control unit operates the induction heating elements in an operating state with the same frequency and with a defined phase shift, which remains unchanged during an entire cooking process.
- the object of the invention is in particular to provide a generic device with improved properties in terms of heating.
- the object is achieved by the features of claims 1 and 11, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
- the invention is based on an induction cooking appliance device, in particular of an induction hob appliance, with at least two induction heating elements and with at least one control unit which operates the induction heating elements in at least one operating state with a first phase shift in at least a first time interval.
- control unit operate the induction heating elements in at least one second time interval different from the first time interval with a second phase shift different from the first phase shift.
- the embodiment according to the invention makes it possible, in particular, to achieve advantageous and / or optimal and / or symmetrical heating of, in particular, cooked cooking utensils.
- an asymmetrical heating in the first time interval can be compensated by a complementary asymmetrical heating in the second time interval, whereby an optimally symmetrical heating can be provided, in particular when the time intervals are superimposed.
- a better heat distribution can be made possible than in the case of an embodiment with a substantially unchanged phase shift.
- a distribution of an available power to the induction heating elements can be optimized in particular by the different phase shift in the time intervals, whereby in particular an advantageous heat distribution can be made possible.
- an “induction cooking appliance device”, in particular an “induction cooking field device”, should in particular be understood as meaning at least one part, in particular a subassembly, of an induction cooking appliance, in particular an induction hob.
- the induction cooking appliance apparatus could be configured as an induction baking oven apparatus and / or an induction grill apparatus.
- the Indu Vietnamese chipsgarellavorraum is designed as an induction hob device.
- an “induction heating element” in this context should be understood to mean, in particular, an element which is preferably provided to provide an electromagnetic alternating field, in particular with a frequency between 20 kHz and 100 kHz, which is provided in particular in an erected, in particular metallic, preferably ferromagnetic cooking dish bottom by eddy current induction and / or Ummagnetleiters bine be converted into heat.
- control unit should in particular be understood to mean an electronic unit which is preferably at least partially integrated in a control and / or regulating unit of an induction cooking appliance and which is preferably provided to control and / or at least control the induction heating elements and / or at least one heating frequency unit to regulate.
- the control unit preferably comprises a computing unit and, in particular in addition to the computing unit, a memory unit with a control and / or regulating program stored therein, which is intended to be executed by the computing unit.
- the induction cooking appliance device has, in particular, at least one heating frequency unit which, in particular in the operating state, supplies energy to at least one of the induction heating elements.
- a "heating frequency unit” is to be understood in particular as an electrical unit which generates an oscillating electrical signal, preferably with a frequency of at least 1 kHz, in particular of at least 10 kHz, advantageously of at least 20 kHz, and in particular of not more than 100 kHz for an induction heating unit.
- the heating frequency unit is provided to provide a maximum electrical power of at least 1000 W, in particular at least 2000 W, advantageously at least 3000 W and preferably at least 3500 W, required by at least one of the induction heating elements.
- the heating frequency unit has in particular at least one inverter, which preferably has at least two, preferably in series, bidirectional unipolar switches which are formed in particular by a transistor and a diode connected in parallel, and particularly advantageously at least one respective damping capacitor connected in parallel with the bidirectional unipolar switches, which is in particular formed by at least one capacitor.
- a voltage tap of the heating frequency unit is arranged in particular at a common contact point of two bidirectional unipolar switches.
- the induction cooking appliance device has at least two heating frequency units, which in particular are assigned to the at least two induction heating elements.
- a first heating frequency unit is associated with a first induction heating element of the induction heating elements and a second heating frequency unit that is different from the first heating frequency unit is assigned to a second induction heating element of the induction heating elements that is different from the first induction heating element.
- a heating frequency unit is "assigned" to an induction heating element, it should be understood that the heating frequency unit supplies the induction heating element with energy in at least one operating state in which the induction heating element in particular heats cooking cooking equipment and provides an alternating electromagnetic field.
- control unit controls at least one heating frequency unit assigned to the induction heating element and supplies energy to the induction heating element by means of the heating frequency unit.
- the induction heating elements could be arranged in at least one mounted state in a full bridge circuit.
- the induction heating elements are arranged in at least one mounted state in a half-bridge circuit.
- a "phase shift" between two induction heating elements should in particular be understood to mean that a vibration, in particular a sinusoidal oscillation, a voltage applied to a first induction heating element of the induction heating elements and a vibration, in particular a sinusoidal oscillation, of a voltage applied to a second induction heating element of the induction heating elements are spaced zero crossings respectively.
- the phase shift assumes an amount which corresponds to a distance of the zero crossings of the voltages.
- the first time interval and the second time interval are, in particular, temporally overlapping-free and in particular have at most one time in common, which could be, in particular, a transition and / or change between the time intervals.
- power delivered by the induction heaters in the first time interval and / or power delivered by the induction heaters in the second time interval advantageously power output by the induction heaters in the first time interval and power output by the induction heaters in the second time interval is unequal Zero and in particular greater than zero.
- control unit could, for example, periodically repeat the first time interval and the second time interval and, in particular, dispense with a third time interval.
- a sum of a duration of the first time interval and a duration of the second time interval could result in a period duration.
- control unit preferably operates the induction heating elements in at least one third time interval different from the first time interval and from the second time interval with a third phase shift different from the first phase shift and the second phase shift.
- control unit in the operating state, could provide a number of x time intervals, and in particular operate the induction heating elements with a number of y different phase shifts, wherein the parameters x and y could in particular be integers greater than three and in particular, the parameter x could be greater than or equal to the parameter y.
- the parameters x and y could in particular be integers greater than three and in particular, the parameter x could be greater than or equal to the parameter y.
- control unit in the operating state of at least one of the time intervals in particular the first time interval and / or the second time interval and / or the third time interval, repeated periodically.
- control unit repeats in the operating state at least one of the time intervals should be understood in particular that the control unit in the operating state of at least one of the time intervals at regular, predefined intervals and in particular repeated in the same order and / or performs.
- a power output from the induction heaters in the third time interval could be zero.
- the control unit could in particular deactivate the induction heating elements in the third time interval.
- a sum of a duration of the first time interval and / or a duration of the second time interval and / or a duration of the third time interval results in a period duration. This can in particular over a longer period a uniform and / or advantageous heat distribution are made possible, which in particular optimal cooking results can be achieved.
- At least one of the time intervals is an integer multiple of half a period of a mains voltage.
- at least one of the time intervals could have a value of 2 times, in particular of 3 times, advantageously of 4 times, particularly advantageously of 6 times and preferably of 8 times half the period of the mains voltage.
- at least one of the time intervals, in particular the first time interval and / or the second time interval and / or the third time interval could be a fraction of half a period of a mains voltage, wherein the fractional part could be determined, for example, by a number of different time intervals. This can be achieved in particular a high efficiency and / or a high operator comfort.
- the control unit could change the phase shift in a range of the mains voltage, which in particular could be temporally spaced from a zero crossing of the mains voltage.
- the control unit could change a phase shift, in particular in at least one time interval, and determine this distance in particular by means of a quotient of half the period of the mains voltage and an integer number n greater than zero.
- the control unit preferably changes the phase shift in a region of a zero crossing of the mains voltage.
- the control unit could change a phase shift, in particular in at least a time interval of n times half the period of the mains voltage, where n could in particular be an integer number greater than zero.
- a "range" of a zero crossing of the mains voltage is to be understood in particular as a time segment which comprises the zero crossing of the mains voltage and which in particular has at least one limit, in particular a beginning and / or an end, which does not exceed time by 25%, in particular a maximum of 15%, advantageously by a maximum of 10%, particularly advantageously by a maximum of 5%, preferably by a maximum of 5% and more preferably by a maximum of 2% of a duration of half the period of the mains voltage is spaced from the zero crossing of the mains voltage.
- the control unit in the operating state, the induction heating elements in the time intervals, in particular in the first time interval and in the second time interval, with at least two mutually complementary phase shifts operates, which are in particular different from each other.
- complementary phase shifts in particular phase shifts should be understood, which can be determined with knowledge of a first phase shift of the phase shifts from the first phase shift and / or which determines the control unit in the operating state with knowledge of a first phase shift of the phase shifts from the first phase shift.
- the control unit in the operating state, could operate the induction heating elements in the first time interval with a first phase shift and in the second time interval with a second phase shift, the control unit in the operating state, in particular by adding a constant phase angle, such as 30 ° and / or 45 ° and / or 90 ° and / or 180 °, could determine the first phase shift.
- a constant phase angle such as 30 ° and / or 45 ° and / or 90 ° and / or 180 °
- a constant phase difference between the two phase shifts of 180 ° could be averaged in particular a possibly defective contact of the induction heating.
- a simple and / or rapid contacting of the induction heating elements could thereby be made possible, as a result of which, in particular, low costs can be achieved.
- the control unit preferably determines the second phase shift from a difference of 360 ° and / or 0 ° and the first phase shift.
- a symmetrical and / or optimized heating of cooking utensils and / or a particularly advantageous and / or even heat distribution can be made possible.
- a heat distribution between at least two induction heating elements, which are in particular arranged adjacent to one another and in particular form a common heating zone can be optimized and / or chosen as desired.
- a power of a respective heating frequency unit which is assigned to a respective one of the induction heating elements, averaged over the time intervals are compensated, whereby in particular all Schufrequenzüen provide the same power and / or claimed the same, which in particular distributes wear at least substantially evenly and / or premature failure of one of the heating frequency units can be avoided.
- a good compromise between optimal heat distribution and balanced utilization of the heating frequency units can be made possible, in particular while maintaining the highest possible flexibility.
- control unit could operate a first induction heating element of the induction heating elements with a first frequency and a second induction heating element of the induction heating elements different from the first induction heating element with a second frequency, which could in particular be an integer multiple of the first frequency.
- the integer multiple could assume a value of at least two and in particular assume non-zero and / or not equal to one.
- control unit preferably operates the induction heating elements with at least substantially and in particular with exactly the same frequency.
- the same frequency is to be understood in particular at least two frequencies in which a quotient of a lower frequency of the frequencies and a higher frequency of the frequencies has a value of at least 0.9, in particular of at least 0.95, advantageously of at least 0.97, more preferably at least 0.98, and preferably at least 0.99.
- intermodulation drone can be avoided.
- the induction heating elements form a common heating zone in the operating state and in particular heat the same cooking utensil.
- the induction heating elements could be arranged concentrically with one another on a main extension plane of at least one of the induction heating elements.
- a first induction heating element of the induction heating elements could, when viewed perpendicular to a main extension plane of at least one of the heating elements, be surrounded concentrically by a second induction heating element of the induction heating elements.
- the induction heating elements could be arranged directly adjacent to one another on a main extension plane of at least one of the induction heating elements, in particular in an installation position a particular single cooking utensil be arranged above the induction heating and at a vertical extension to a main extension plane of at least one of Induction heating in particular could extend over the induction heating.
- the induction heating elements could be part of a matrix of induction heating elements which can be replaced by at least three, in particular by at least four, advantageously by at least five, particularly advantageously by at least eight, preferably by at least twelve and more preferably could be formed by a plurality of induction heating elements.
- the induction heating elements could be arranged in a row, which in particular could be formed as part of the matrix or as a separate row.
- the cooking utensils which heat the induction heating elements, in particular in the operating state extend in particular at least to a large extent over an extension and / or over an areal extent of the induction heating elements.
- at least to a large extent should be understood in particular to a proportion, in particular a mass fraction and / or volume fraction, of at least 70%, in particular at least 80%, advantageously at least 90% and preferably at least 95%.
- a symmetrical heating of heating zones can be made possible, which are formed by at least two induction heating elements, whereby in particular even large cooking utensils can be optimally heated.
- the invention is further based on a method for operating an induction cooking appliance device, with at least two induction heating elements which are operated in at least one operating state in at least a first time interval with a first phase shift.
- a particularly optimal heating of cooking utensils and / or a particularly advantageous heat distribution can be achieved, in particular, if the induction heating elements are operated in the operating state in at least one second time interval different from the first time interval with a second phase shift different from the first phase shift.
- the induction cooking appliance apparatus should not be limited to the above-described application and embodiment.
- the induction cooking appliance apparatus may have a different number than a number of individual items, components, and units referred to herein.
- Fig. 1 shows an induction cooker 28 with a Indu Vietnamesesgaréevorraum 10.
- the induction cooker 28 could be formed, for example, as an induction oven and / or as an induction cooker and / or as a Indu Vietnamesesgarofen.
- the induction cooking appliance 28 is designed as an induction hob.
- the Indu Vietnamesesgaréevorraum 10 is formed in the present embodiment as an induction hob device.
- the induction cooking appliance apparatus 10 has a cooking appliance plate 30.
- the cooking appliance plate 30 forms part of an appliance outer casing, in particular of the induction cooking appliance 28.
- the cooking appliance plate 30 forms in an installed position an operator facing part of the device outer housing.
- the cooking appliance plate 30 could be designed, for example, as a front plate and / or cover plate of the device outer housing, in particular of an induction cooking appliance 28 designed as an induction baking oven and / or as an induction cooker and / or as an induction cooking oven.
- the cooking appliance plate 30 is formed as a hob plate.
- the cooking appliance plate 30 is provided for setting up cooking utensils 34 (cf. Fig. 1 ).
- the induction cooking appliance apparatus 10 has an operator interface 32 for input and / or selection of operating parameters (cf. Fig. 1 ), for example a heating power and / or a heating power density and / or a heating zone 26.
- the operator interface 32 is provided for outputting a value of an operating parameter to an operator.
- the operator interface 32 could optically and / or acoustically output the value of the operating parameter to an operator.
- the induction cooking appliance apparatus 10 has a control unit 14.
- the control unit 14 is provided to execute actions and / or to change settings in dependence on operating parameters entered by means of the operator interface 32.
- the Indutationsgaréevorraum 10 has in the present embodiment, six induction heating 12 on. Of multiply existing objects, only one is provided with a reference numeral in the figures. In each case two of the induction heating elements 12 form a common heating zone 26 in an operating state. In the following, only the two induction heating elements 12 will be described, which form a common heating zone 26 in the operating state. By way of example, the induction heating elements 12 which are arranged adjacent to one another are described below. A description for induction heating elements 12, which are arranged in a different form relative to each other and form a common heating zone 26 for heating a particular single cooking utensils 34, takes place analogously.
- the induction heating elements 12 are provided to heat cooking utensils 34 placed on the cooking appliance plate 30 above the induction heating elements 12. In the operating state, the induction heating elements 12 supply energy to the cooking utensils 34 installed.
- the control unit 14 controls in the operating state an energy supply to the induction heating elements 12. In an installed position, the induction heating elements 12 are arranged below the cooking appliance plate 30.
- the induction cooking appliance apparatus 10 has a supply unit 36 (cf. Fig. 2 ), which supplies the induction heating elements 12 with energy in the operating state, in particular as a function of activation by the control unit 14.
- the supply unit 36 has a heating frequency unit 38 per induction heating element 12.
- Each heating frequency unit 38 is assigned to one of the induction heating elements 12 and, in the operating state, in particular provides a particularly high-frequency alternating current to the supply of the induction heating element 12.
- Each heating frequency unit 38 has an inverter.
- the induction heating elements 12 are each arranged in a half-bridge circuit, as is widely known in the prior art. Therefore, a circuit of the induction heating elements 12 will not be further described below.
- the control unit 14 operates the induction heating elements 12 in a first time interval 16 with a first phase shift 40 (cf. Fig. 3 and 4 ).
- the first time interval 16 is an integer multiple of half a period duration 46 of a mains voltage 24.
- the first time interval 16 is half the period duration 46 of the network voltage 24.
- the control unit 14 operates the induction heating elements 12 in a second time interval 18 different from the first time interval 16 with a second phase shift 42 different from the first phase shift 40.
- the second time interval 18 is an integer multiple of half a period duration 46 of a mains voltage 24 In the present exemplary embodiment, the second time interval 18 is half the period duration 46 of the mains voltage 24.
- the second time interval 18 connects directly to the first time interval 16.
- the control unit 14 repeats the first time interval 16 and the second time interval 18 periodically in the operating state.
- a transition between the time intervals 16, 18 is in a range of a zero crossing 22 of the mains voltage 24.
- the control unit 14 changes the phase shift 40, 42 in the region of a zero crossing 22 of the mains voltage 24.
- the control unit 14 operates in the operating state, the induction heating elements 12 with substantially the same frequency (see. Fig. 3 ). In the operating state, the control unit 14 operates the induction heating elements 12 in the time intervals 16, 18 with two mutually complementary phase shifts 40, 42. The control unit 14 determines the second phase shift 42 from a difference of 360 ° and the first phase shift 40 in the operating state.
- the control unit 14 operates the induction heating elements 12, for example in the first time interval 16 with a first phase shift 40 of substantially 90 °.
- the control unit 14 operates the induction heating elements 12 in the second time interval 18 with a second phase shift 42 of substantially 270 °, which a second phase shift 42 of substantially -90 ° corresponds.
- the induction heating elements 12 are operated in the first time interval 16 with a first phase shift 40.
- the induction heating elements 12 are operated in the operating state in a second time interval 18 different from the first time interval 16 with a second phase shift 42 different from the first phase shift 40.
- the control unit 14 operates the induction heating elements 12 in a first time interval 16 with a first phase shift 40 and in a second time interval 18 different from the first time interval 16 with a second phase shift 42 different from the first phase shift 40.
- the control unit 14 operates in the Operating state, the induction heating elements 12 in one of the first time interval 16 and the second time interval 18 different third time interval 20 with a different from the first phase shift 40 and the second phase shift 42 third phase shift 44th
- the third time interval 20 is an integer multiple of half a period duration 46 of a network voltage 24.
- Each of the time intervals 16, 18, 20 is an integer multiple of half a period duration 46 of a network voltage 24.
- each of the time intervals 16, 18, 20 is half the period duration 46 of the mains voltage 24.
- the second time interval 18 connects directly to the first time interval 16.
- the third time interval 20 connects directly to the second time interval 18.
- the control unit 14 repeats the first time interval 16 and the second time interval 18 and the third time interval 20 periodically in the operating state.
- control unit 14 operates the induction heating elements 12 in a first time interval 16 with a first phase shift 40 and in a second time interval 18 different from the first time interval 16 with a second phase shift 42 different from the first phase shift 40.
- the control unit 14 deactivates in FIG Operating state, the induction heating elements 12 in one of the first time interval 16 and the second time interval 18 different third time interval 48th
- the third time interval 48 is an integer multiple of half a period duration 46 of a network voltage 24.
- Each of the time intervals 16, 18, 48 is an integer multiple of half a period duration 46 of a network voltage 24.
- each of the time intervals 16, 18, 48 is half the period duration 46 of the mains voltage 24.
- the second time interval 18 connects directly to the first time interval 16.
- the third time interval 48 connects directly to the second time interval 18.
- the control unit 14 repeats the first time interval 16 and the second time interval 18 and the third time interval 48 periodically in the operating state.
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Abstract
Die Erfindung geht aus von einer Induktionsgargerätevorrichtung (10), insbesondere Induktionskochfeldvorrichtung, mit zumindest zwei Induktionsheizelementen (12) und mit zumindest einer Steuereinheit (14), welche in wenigstens einem Betriebszustand die Induktionsheizelemente (12) in zumindest einem ersten Zeitintervall (16) mit einer ersten Phasenverschiebung (40) betreibt. Um eine gattungsgemäße Vorrichtung mit verbesserten Eigenschaften hinsichtlich einer Beheizung bereitzustellen, wird vorgeschlagen, dass die Steuereinheit (14) in dem Betriebszustand die Induktionsheizelemente (12) in zumindest einem von dem ersten Zeitintervall (16) verschiedenen zweiten Zeitintervall (18) mit einer von der ersten Phasenverschiebung (40) verschiedenen zweiten Phasenverschiebung (42) betreibt.The invention is based on an induction cooking appliance device (10), in particular an induction hob appliance, with at least two induction heating elements (12) and with at least one control unit (14), which in at least one operating state, the induction heating elements (12) in at least a first time interval (16) with a first phase shift (40) operates. In order to provide a generic device with improved properties in terms of heating, it is proposed that the control unit (14) in the operating state, the induction heating elements (12) in at least one of the first time interval (16) different second time interval (18) with one of the first Phase shift (40) different second phase shift (42) operates.
Description
Die Erfindung betrifft eine Induktionsgargerätevorrichtung nach dem Oberbegriff des Anspruchs 1 und ein Verfahren zu einem Betrieb einer Induktionsgargerätevorrichtung nach dem Oberbegriff des Anspruchs 11.The invention relates to an induction cooking appliance apparatus according to the preamble of claim 1 and to a method for operating an induction cooking appliance apparatus according to the preamble of claim 11.
Aus dem Stand der Technik ist bereits eine Induktionsgargerätevorrichtung mit zwei Induktionsheizelementen bekannt, welche eine gemeinsame Heizzone ausbilden. Eine Steuereinheit betreibt die Induktionsheizelemente in einem Betriebszustand mit gleicher Frequenz und mit einer festgelegten Phasenverschiebung, welche während eines gesamten Garprozesses hindurch unverändert bleibt. Hierdurch kann, insbesondere aufgrund der konstanten, festgelegten Phasenverschiebung, eine unsymmetrische Wärmeverteilung in einem beheizten Gargeschirr entstehen, woraus insbesondere eine unvorteilhafte Garung resultieren könnte.An induction cooking appliance device with two induction heating elements, which form a common heating zone, is already known from the prior art. A control unit operates the induction heating elements in an operating state with the same frequency and with a defined phase shift, which remains unchanged during an entire cooking process. As a result, in particular due to the constant, fixed phase shift, an asymmetrical heat distribution in a heated cooking utensil, resulting in particular a disadvantageous cooking could result.
Die Aufgabe der Erfindung besteht insbesondere darin, eine gattungsgemäße Vorrichtung mit verbesserten Eigenschaften hinsichtlich einer Beheizung bereitzustellen. Die Aufgabe wird erfindungsgemäß durch die Merkmale der Ansprüche 1 und 11 gelöst, während vorteilhafte Ausgestaltungen und Weiterbildungen der Erfindung den Unteransprüchen entnommen werden können.The object of the invention is in particular to provide a generic device with improved properties in terms of heating. The object is achieved by the features of claims 1 and 11, while advantageous embodiments and modifications of the invention can be taken from the dependent claims.
Die Erfindung geht aus von einer Induktionsgargerätevorrichtung, insbesondere von einer Induktionskochfeldvorrichtung, mit zumindest zwei Induktionsheizelementen und mit zumindest einer Steuereinheit, welche in wenigstens einem Betriebszustand die Induktionsheizelemente in zumindest einem ersten Zeitintervall mit einer ersten Phasenverschiebung betreibt.The invention is based on an induction cooking appliance device, in particular of an induction hob appliance, with at least two induction heating elements and with at least one control unit which operates the induction heating elements in at least one operating state with a first phase shift in at least a first time interval.
Es wird vorgeschlagen, dass die Steuereinheit in dem Betriebszustand die Induktionsheizelemente in zumindest einem von dem ersten Zeitintervall verschiedenen zweiten Zeitintervall mit einer von der ersten Phasenverschiebung verschiedenen zweiten Phasenverschiebung betreibt.It is proposed that in the operating state the control unit operate the induction heating elements in at least one second time interval different from the first time interval with a second phase shift different from the first phase shift.
Durch die erfindungsgemäße Ausgestaltung kann insbesondere eine vorteilhafte und/oder optimale und/oder symmetrische Beheizung von insbesondere aufgestelltem Gargeschirr erreicht werden. Insbesondere kann eine unsymmetrische Beheizung in dem ersten Zeitintervall durch eine komplementäre unsymmetrische Beheizung in dem zweiten Zeitintervall ausgeglichen werden, wodurch insbesondere bei einer Überlagerung der Zeitintervalle eine optimal symmetrische Beheizung bereitgestellt werden kann. Betrachtet über einen längeren Zeitraum kann insbesondere eine bessere Wärmeverteilung ermöglicht werden als bei einer Ausgestaltung mit im Wesentlichen unveränderter Phasenverschiebung. Insbesondere kann eine Abhängigkeit von einer Kontaktierung der Induktionsheizelemente minimiert und vorteilhaft komplett ausgemittelt werden. Eine Aufteilung einer zu einer Verfügung stehenden Leistung auf die Induktionsheizelemente kann insbesondere durch die verschiedene Phasenverschiebung in den Zeitintervallen optimiert werden, wodurch insbesondere eine vorteilhafte Wärmeverteilung ermöglicht werden kann.The embodiment according to the invention makes it possible, in particular, to achieve advantageous and / or optimal and / or symmetrical heating of, in particular, cooked cooking utensils. In particular, an asymmetrical heating in the first time interval can be compensated by a complementary asymmetrical heating in the second time interval, whereby an optimally symmetrical heating can be provided, in particular when the time intervals are superimposed. Considered over a longer period, in particular a better heat distribution can be made possible than in the case of an embodiment with a substantially unchanged phase shift. In particular, can a dependence on a contacting of the induction heating minimized and advantageously completely averaged out. A distribution of an available power to the induction heating elements can be optimized in particular by the different phase shift in the time intervals, whereby in particular an advantageous heat distribution can be made possible.
Unter einer "Induktionsgargerätevorrichtung", insbesondere unter einer "Induktionskochfeldvorrichtung", soll insbesondere zumindest ein Teil, insbesondere eine Unterbaugruppe, eines Induktionsgargeräts, insbesondere eines Induktionskochfelds, verstanden werden. Die Induktionsgargerätevorrichtung könnte beispielsweise als eine Induktionsbackofenvorrichtung und/oder eine Induktionsgrillvorrichtung ausgebildet sein. Vorteilhaft ist die Induktionsgargerätevorrichtung als eine Induktionskochfeldvorrichtung ausgebildet.An "induction cooking appliance device", in particular an "induction cooking field device", should in particular be understood as meaning at least one part, in particular a subassembly, of an induction cooking appliance, in particular an induction hob. For example, the induction cooking appliance apparatus could be configured as an induction baking oven apparatus and / or an induction grill apparatus. Advantageously, the Induktionsgargerätevorrichtung is designed as an induction hob device.
Unter einem "Induktionsheizelement" soll in diesem Zusammenhang insbesondere ein Element verstanden werden, welches vorzugsweise dazu vorgesehen ist, ein elektromagnetisches Wechselfeld insbesondere mit einer Frequenz zwischen 20 kHz und 100 kHz bereitzustellen, das insbesondere dazu vorgesehen ist, in einem aufgestellten, insbesondere metallischen, vorzugsweise ferromagnetischen Gargeschirrboden durch Wirbelstrominduktion und/oder Ummagnetisierungseffekte in Wärme umgewandelt zu werden.An "induction heating element" in this context should be understood to mean, in particular, an element which is preferably provided to provide an electromagnetic alternating field, in particular with a frequency between 20 kHz and 100 kHz, which is provided in particular in an erected, in particular metallic, preferably ferromagnetic cooking dish bottom by eddy current induction and / or Ummagnetisierungseffekte be converted into heat.
Unter einer "Steuereinheit" soll insbesondere eine elektronische Einheit verstanden werden, die vorzugsweise in einer Steuer- und/oder Regeleinheit eines Induktionsgargeräts zumindest teilweise integriert ist und die vorzugsweise dazu vorgesehen ist, zumindest die Induktionsheizelemente und/oder zumindest eine Heizfrequenzeinheit zu steuern und/oder zu regeln. Vorzugsweise umfasst die Steuereinheit eine Recheneinheit und insbesondere zusätzlich zur Recheneinheit eine Speichereinheit mit einem darin gespeicherten Steuer- und/oder Regelprogramm, das dazu vorgesehen ist, von der Recheneinheit ausgeführt zu werden.A "control unit" should in particular be understood to mean an electronic unit which is preferably at least partially integrated in a control and / or regulating unit of an induction cooking appliance and which is preferably provided to control and / or at least control the induction heating elements and / or at least one heating frequency unit to regulate. The control unit preferably comprises a computing unit and, in particular in addition to the computing unit, a memory unit with a control and / or regulating program stored therein, which is intended to be executed by the computing unit.
Die Induktionsgargerätevorrichtung weist insbesondere zumindest eine Heizfrequenzeinheit auf, welche insbesondere in dem Betriebszustand zumindest eines der Induktionsheizelemente mit Energie versorgt. Unter einer "Heizfrequenzeinheit" soll insbesondere eine elektrische Einheit verstanden werden, die ein oszillierendes elektrisches Signal, vorzugsweise mit einer Frequenz von zumindest 1 kHz, insbesondere von wenigstens 10 kHz vorteilhaft von mindestens 20 kHz, und insbesondere von maximal 100 kHz für eine Induktionsheizeinheit erzeugt. Insbesondere ist die Heizfrequenzeinheit dazu vorgesehen, eine, von zumindest einem der Induktionsheizelemente geforderte, maximale elektrische Leistung von zumindest 1000 W, insbesondere zumindest 2000 W, vorteilhaft zumindest 3000 W und vorzugsweise zumindest 3500 W bereitzustellen. Die Heizfrequenzeinheit weist insbesondere zumindest einen Wechselrichter auf, der vorzugsweise zumindest zwei, vorzugsweise in Reihe geschaltete, bidirektionale unipolare Schalter, die insbesondere von einem Transistor und einer parallel geschalteten Diode gebildet sind, und besonders vorteilhaft zumindest jeweils einen parallel zu den bidirektionalen unipolaren Schaltern geschaltete Dämpfungskapazität, die insbesondere von zumindest einem Kondensator gebildet ist, aufweist. Hierdurch kann eine hochfrequente Energieversorgung der Induktionsheizelemente bereitgestellt werden. Ein Spannungsabgriff der Heizfrequenzeinheit ist insbesondere an einer gemeinsamen Kontaktstelle zweier bidirektionaler unipolarer Schalter angeordnet.The induction cooking appliance device has, in particular, at least one heating frequency unit which, in particular in the operating state, supplies energy to at least one of the induction heating elements. A "heating frequency unit" is to be understood in particular as an electrical unit which generates an oscillating electrical signal, preferably with a frequency of at least 1 kHz, in particular of at least 10 kHz, advantageously of at least 20 kHz, and in particular of not more than 100 kHz for an induction heating unit. In particular, the heating frequency unit is provided to provide a maximum electrical power of at least 1000 W, in particular at least 2000 W, advantageously at least 3000 W and preferably at least 3500 W, required by at least one of the induction heating elements. The heating frequency unit has in particular at least one inverter, which preferably has at least two, preferably in series, bidirectional unipolar switches which are formed in particular by a transistor and a diode connected in parallel, and particularly advantageously at least one respective damping capacitor connected in parallel with the bidirectional unipolar switches, which is in particular formed by at least one capacitor. In this way, a high-frequency power supply of the induction heating elements can be provided. A voltage tap of the heating frequency unit is arranged in particular at a common contact point of two bidirectional unipolar switches.
Vorteilhaft weist die Induktionsgargerätevorrichtung zumindest zwei Heizfrequenzeinheiten auf, welche insbesondere den zumindest zwei Induktionsheizelementen zugeordnet sind. Insbesondere ist eine erste Heizfrequenzeinheit einem ersten Induktionsheizelement der Induktionsheizelemente und eine von der ersten Heizfrequenzeinheit verschiedene zweite Heizfrequenzeinheit einem von dem ersten Induktionsheizelement verschiedenen zweiten Induktionsheizelement der Induktionsheizelemente zugeordnet. Unter der Wendung, dass eine Heizfrequenzeinheit einem Induktionsheizelement "zugeordnet" ist, soll insbesondere verstanden werden, dass die Heizfrequenzeinheit das Induktionsheizelement in wenigstens einem Betriebszustand, in welchem das Induktionsheizelement insbesondere ein Gargeschirr beheizt und ein elektromagnetisches Wechselfeld bereitstellt, mit Energie versorgt.Advantageously, the induction cooking appliance device has at least two heating frequency units, which in particular are assigned to the at least two induction heating elements. In particular, a first heating frequency unit is associated with a first induction heating element of the induction heating elements and a second heating frequency unit that is different from the first heating frequency unit is assigned to a second induction heating element of the induction heating elements that is different from the first induction heating element. By the phrase that a heating frequency unit is "assigned" to an induction heating element, it should be understood that the heating frequency unit supplies the induction heating element with energy in at least one operating state in which the induction heating element in particular heats cooking cooking equipment and provides an alternating electromagnetic field.
Unter der Wendung, dass die Steuereinheit zumindest ein Induktionsheizelement "betreibt", soll insbesondere verstanden werden, dass die Steuereinheit zumindest eine dem Induktionsheizelement zugeordnete Heizfrequenzeinheit ansteuert und dem Induktionsheizelement mittels der Heizfrequenzeinheit Energie zuführt. Beispielsweise könnten die Induktionsheizelemente in wenigstens einem montierten Zustand in einer Vollbrückenschaltung angeordnet sein. Vorteilhaft sind die Induktionsheizelemente in wenigstens einem montierten Zustand in einer Halbbrückenschaltung angeordnet.By the phrase that the control unit "operates" at least one induction heating element, it should be understood in particular that the control unit controls at least one heating frequency unit assigned to the induction heating element and supplies energy to the induction heating element by means of the heating frequency unit. For example, the induction heating elements could be arranged in at least one mounted state in a full bridge circuit. Advantageously, the induction heating elements are arranged in at least one mounted state in a half-bridge circuit.
Unter einer "Phasenverschiebung" zwischen zwei Induktionsheizelementen soll insbesondere verstanden werden, dass eine Schwingung, insbesondere eine Sinusschwingung, einer an einem ersten Induktionsheizelement der Induktionsheizelemente anliegenden Spannung und eine Schwingung, insbesondere eine Sinusschwingung, einer an einem zweiten Induktionsheizelement der Induktionsheizelemente anliegenden Spannung voneinander beabstandete Nulldurchgänge aufweisen. Insbesondere nimmt die Phasenverschiebung einen Betrag an, welcher durch einem Abstand der Nulldurchgänge der Spannungen entspricht.A "phase shift" between two induction heating elements should in particular be understood to mean that a vibration, in particular a sinusoidal oscillation, a voltage applied to a first induction heating element of the induction heating elements and a vibration, in particular a sinusoidal oscillation, of a voltage applied to a second induction heating element of the induction heating elements are spaced zero crossings respectively. In particular, the phase shift assumes an amount which corresponds to a distance of the zero crossings of the voltages.
Das erste Zeitintervall und das zweite Zeitintervall sind insbesondere zeitlich überlappungsfrei und haben insbesondere maximal einen Zeitpunkt gemeinsam, welcher insbesondere ein Übergang und/oder Wechsel zwischen den Zeitintervallen sein könnte.The first time interval and the second time interval are, in particular, temporally overlapping-free and in particular have at most one time in common, which could be, in particular, a transition and / or change between the time intervals.
Insbesondere ist eine von den Induktionsheizelementen in dem ersten Zeitintervall abgegebene Leistung und/oder eine von den Induktionsheizelementen in dem zweiten Zeitintervall abgegebene Leistung, vorteilhaft eine von den Induktionsheizelementen in dem ersten Zeitintervall abgegebene Leistung und eine von den Induktionsheizelementen in dem zweiten Zeitintervall abgegebene Leistung, ungleich Null und insbesondere größer als Null.In particular, power delivered by the induction heaters in the first time interval and / or power delivered by the induction heaters in the second time interval, advantageously power output by the induction heaters in the first time interval and power output by the induction heaters in the second time interval is unequal Zero and in particular greater than zero.
Unter "vorgesehen" soll insbesondere speziell programmiert, ausgelegt und/oder ausgestattet verstanden werden. Darunter, dass ein Objekt zu einer bestimmten Funktion vorgesehen ist, soll insbesondere verstanden werden, dass das Objekt diese bestimmte Funktion in zumindest einem Anwendungs- und/oder Betriebszustand erfüllt und/oder ausführt.By "provided" is intended to be understood in particular specially programmed, designed and / or equipped. The fact that an object is intended for a specific function should in particular mean that the object fulfills and / or executes this specific function in at least one application and / or operating state.
Die Steuereinheit könnte in dem Betriebszustand beispielsweise das erste Zeitintervall und das zweite Zeitintervall periodisch wiederholen und insbesondere auf ein drittes Zeitintervall verzichten. Insbesondere könnte eine Summe aus einer Dauer des ersten Zeitintervalls und einer Dauer des zweiten Zeitintervalls eine Periodendauer ergeben. Vorzugsweise betreibt die Steuereinheit in dem Betriebszustand die Induktionsheizelemente in zumindest einem von dem ersten Zeitintervall und von dem zweiten Zeitintervall verschiedenen dritten Zeitintervall mit einer von der ersten Phasenverschiebung und von der zweiten Phasenverschiebung verschiedenen dritten Phasenverschiebung. Alternativ oder zusätzlich könnte die Steuereinheit in dem Betriebszustand eine Anzahl an x jeweils zueinander verschiedenen Zeitintervallen vorsehen und in diesen Zeitintervallen insbesondere die Induktionsheizelemente mit einer Anzahl an y jeweils zueinander verschiedener Phasenverschiebungen betreiben, wobei die Parameter x und y insbesondere ganze Zahlen größer drei sein könnten und wobei insbesondere der Parameter x größer oder gleich dem Parameter y sein könnte. Dadurch kann insbesondere eine hohe Flexibilität erreicht werden.In the operating state, the control unit could, for example, periodically repeat the first time interval and the second time interval and, in particular, dispense with a third time interval. In particular, a sum of a duration of the first time interval and a duration of the second time interval could result in a period duration. In the operating state, the control unit preferably operates the induction heating elements in at least one third time interval different from the first time interval and from the second time interval with a third phase shift different from the first phase shift and the second phase shift. Alternatively or additionally, in the operating state, the control unit could provide a number of x time intervals, and in particular operate the induction heating elements with a number of y different phase shifts, wherein the parameters x and y could in particular be integers greater than three and in particular, the parameter x could be greater than or equal to the parameter y. As a result, in particular a high degree of flexibility can be achieved.
Zudem wird vorgeschlagen, dass die Steuereinheit in dem Betriebszustand zumindest eines der Zeitintervalle, insbesondere das erste Zeitintervall und/oder das zweite Zeitintervall und/oder das dritte Zeitintervall, periodisch wiederholt. Unter der Wendung, dass die Steuereinheit in dem Betriebszustand zumindest eines der Zeitintervalle "periodisch" wiederholt, soll insbesondere verstanden werden, dass die Steuereinheit in dem Betriebszustand zumindest eines der Zeitintervalle in regelmäßigen, vordefinierten zeitlichen Abständen und insbesondere in der gleichen Reihenfolge wiederholt und/oder ausführt. Beispielsweise könnte eine von den Induktionsheizelementen in dem dritten Zeitintervall abgegebene Leistung Null sein. Die Steuereinheit könnte die Induktionsheizelemente in dem dritten Zeitintervall insbesondere deaktivieren. Insbesondere ergibt eine Summe aus einer Dauer des ersten Zeitintervalls und/oder einer Dauer des zweiten Zeitintervalls und/oder einer Dauer des dritten Zeitintervalls eine Periodendauer. Dadurch kann insbesondere über einen längeren Zeitraum eine gleichmäßige und/oder vorteilhafte Wärmeverteilung ermöglicht werden, wodurch insbesondere optimale Garergebnisse erzielt werden können.In addition, it is proposed that the control unit in the operating state of at least one of the time intervals, in particular the first time interval and / or the second time interval and / or the third time interval, repeated periodically. Under the phrase that the control unit repeats in the operating state at least one of the time intervals "periodically", should be understood in particular that the control unit in the operating state of at least one of the time intervals at regular, predefined intervals and in particular repeated in the same order and / or performs. For example, a power output from the induction heaters in the third time interval could be zero. The control unit could in particular deactivate the induction heating elements in the third time interval. In particular, a sum of a duration of the first time interval and / or a duration of the second time interval and / or a duration of the third time interval results in a period duration. This can in particular over a longer period a uniform and / or advantageous heat distribution are made possible, which in particular optimal cooking results can be achieved.
Weiterhin wird vorgeschlagen, dass zumindest eines der Zeitintervalle, insbesondere das erste Zeitintervall und/oder das zweite Zeitintervall und/oder das dritte Zeitintervall, ein ganzzahliges Vielfaches einer halben Periodendauer einer Netzspannung sind. Beispielsweise könnte zumindest eines der Zeitintervalle einen Wert von 2-mal, insbesondere von 3-mal, vorteilhaft von 4-mal, besonders vorteilhaft von 6-mal und vorzugsweise von 8-mal der halben Periodendauer der Netzspannung aufweisen. Alternativ oder zusätzlich könnte zumindest eines der Zeitintervalle, insbesondere das erste Zeitintervall und/oder das zweite Zeitintervall und/oder das dritte Zeitintervall, ein Bruchteil einer halben Periodendauer einer Netzspannung sein, wobei der Bruchteil beispielsweise durch eine Anzahl verschiedener Zeitintervalle bestimmt sein könnte. Dadurch kann insbesondere eine hohe Effizienz und/oder ein hoher Bedienerkomfort erreicht werden.Furthermore, it is proposed that at least one of the time intervals, in particular the first time interval and / or the second time interval and / or the third time interval, is an integer multiple of half a period of a mains voltage. For example, at least one of the time intervals could have a value of 2 times, in particular of 3 times, advantageously of 4 times, particularly advantageously of 6 times and preferably of 8 times half the period of the mains voltage. Alternatively or additionally, at least one of the time intervals, in particular the first time interval and / or the second time interval and / or the third time interval, could be a fraction of half a period of a mains voltage, wherein the fractional part could be determined, for example, by a number of different time intervals. This can be achieved in particular a high efficiency and / or a high operator comfort.
Beispielsweise könnte die Steuereinheit in dem Betriebszustand die Phasenverschiebung in einem Bereich der Netzspannung verändern, welcher insbesondere zeitlich beabstandet zu einem Nulldurchgang der Netzspannung sein könnte. Die Steuereinheit könnte eine Phasenverschiebung insbesondere in zumindest einem zeitlichen Abstand verändern und diesen Abstand insbesondere mittels eines Quotienten der halben Periodendauer der Netzspannung und einer ganzzahligen Zahl n größer als Null ermitteln. Vorzugsweise verändert die Steuereinheit in dem Betriebszustand die Phasenverschiebung in einem Bereich eines Nulldurchgangs der Netzspannung. Die Steuereinheit könnte eine Phasenverschiebung insbesondere in zumindest einem zeitlichen Abstand von n-mal der halben Periodendauer der Netzspannung verändern, wobei n insbesondere eine ganzzahlige Zahl größer als Null sein könnte. Unter einem "Bereich" eines Nulldurchgangs der Netzspannung soll insbesondere ein zeitlicher Abschnitt verstanden werden, welcher den Nulldurchgang der Netzspannung umfasst und welcher insbesondere zumindest eine Grenze, insbesondere einen Anfang und/oder ein Ende, aufweist, die zeitlich um maximal 25 %, insbesondere um maximal 15 %, vorteilhaft um maximal 10 %, besonders vorteilhaft um maximal 5 %, vorzugsweise um maximal 5 % und besonders bevorzugt um maximal 2 % einer Dauer der halben Periodendauer der Netzspannung von dem Nulldurchgang der Netzspannung beabstandet ist. Dadurch kann insbesondere Flicker vermieden und/oder minimiert werden, wodurch insbesondere ein hoher Bedienkomfort erzielt werden kann.For example, in the operating state, the control unit could change the phase shift in a range of the mains voltage, which in particular could be temporally spaced from a zero crossing of the mains voltage. The control unit could change a phase shift, in particular in at least one time interval, and determine this distance in particular by means of a quotient of half the period of the mains voltage and an integer number n greater than zero. In the operating state, the control unit preferably changes the phase shift in a region of a zero crossing of the mains voltage. The control unit could change a phase shift, in particular in at least a time interval of n times half the period of the mains voltage, where n could in particular be an integer number greater than zero. A "range" of a zero crossing of the mains voltage is to be understood in particular as a time segment which comprises the zero crossing of the mains voltage and which in particular has at least one limit, in particular a beginning and / or an end, which does not exceed time by 25%, in particular a maximum of 15%, advantageously by a maximum of 10%, particularly advantageously by a maximum of 5%, preferably by a maximum of 5% and more preferably by a maximum of 2% of a duration of half the period of the mains voltage is spaced from the zero crossing of the mains voltage. As a result, in particular, flicker can be avoided and / or minimized, as a result of which, in particular, a high level of operating comfort can be achieved.
Zudem wird vorgeschlagen, dass die Steuereinheit in dem Betriebszustand die Induktionsheizelemente in den Zeitintervallen, insbesondere in dem ersten Zeitintervall und in dem zweiten Zeitintervall, mit zumindest zwei zueinander komplementären Phasenverschiebungen betreibt, welche insbesondere voneinander verschieden sind. Unter zueinander "komplementären" Phasenverschiebungen sollen insbesondere Phasenverschiebungen verstanden werden, welche sich bei Kenntnis einer ersten Phasenverschiebung der Phasenverschiebungen aus der ersten Phasenverschiebung ermitteln lassen und/oder welche die Steuereinheit in dem Betriebszustand bei Kenntnis einer ersten Phasenverschiebung der Phasenverschiebungen aus der ersten Phasenverschiebung ermittelt. Dadurch können insbesondere ungleichmäßige Wärmeverteilungen, welche sich in dem ersten Zeitintervall bei einer ersten Phasenverschiebung einstellen, durch Wärmeverteilungen, welche sich in dem zweiten Zeitintervall bei einer zweiten Phasenverschiebung einstellen, ausgemittelt werden, wodurch gemittelt über die Zeitintervalle eine gleichmäßige Wärmeverteilung erzielt werden kann.In addition, it is proposed that the control unit in the operating state, the induction heating elements in the time intervals, in particular in the first time interval and in the second time interval, with at least two mutually complementary phase shifts operates, which are in particular different from each other. By "complementary" phase shifts in particular phase shifts should be understood, which can be determined with knowledge of a first phase shift of the phase shifts from the first phase shift and / or which determines the control unit in the operating state with knowledge of a first phase shift of the phase shifts from the first phase shift. As a result, in particular uneven heat distributions, which occur in the first time interval at a first phase shift, can be averaged out by heat distributions, which occur in the second time interval in a second phase shift, whereby averaged heat distribution can be achieved averaged over the time intervals.
Beispielsweise könnte die Steuereinheit in dem Betriebszustand die Induktionsheizelemente in dem ersten Zeitintervall mit einer ersten Phasenverschiebung und in dem zweiten Zeitintervall mit einer zweiten Phasenverschiebung betreiben, welche die Steuereinheit in dem Betriebszustand insbesondere durch eine Addition eines konstanten Phasenwinkels, wie beispielsweise 30° und/oder 45° und/oder 90° und/oder 180°, zu der ersten Phasenverschiebung ermitteln könnte. Insbesondere im Fall einer konstanten Phasendifferenz zwischen den beiden Phasenverschiebungen von 180° könnte insbesondere eine möglicherweise fehlerhafte Kontaktierung der Induktionsheizelemente ausgemittelt werden. Insbesondere könnte hierdurch eine einfache und/oder schnelle Kontaktierung der Induktionsheizelemente ermöglicht werden, wodurch insbesondere geringe Kosten erzielt werden können. Auf eine Kontrolle einer korrekten Kontaktierung der Induktionsheizelemente bei einer Montage kann insbesondere verzichtet werden, wodurch ein schneller und/oder unkomplizierter Montagevorgang ermöglicht werden kann. Vorzugsweise ermittelt die Steuereinheit in dem Betriebszustand die zweite Phasenverschiebung aus einer Differenz von 360° und/oder 0° und der ersten Phasenverschiebung. Dadurch kann insbesondere eine symmetrische und/oder optimierte Beheizung von Gargeschirr und/oder eine besonders vorteilhafte und/oder gleichmäßige Wärmeverteilung ermöglicht werden. Insbesondere kann eine Wärmeverteilung zwischen zumindest zwei Induktionsheizelementen, welche insbesondere benachbart zueinander angeordnet sind und insbesondere eine gemeinsame Heizzone ausbilden, optimiert und/oder nach Belieben gewählt werden. Es kann insbesondere eine Leistung einer jeweiligen Heizfrequenzeinheit, welche einem jeweiligen der Induktionsheizelementen zugeordnet ist, gemittelt über die Zeitintervalle ausgeglichen werden, wodurch insbesondere sämtliche Heizfrequenzeinheiten die gleiche Leistung bereitstellen und/oder gleich beansprucht werden können, wodurch insbesondere ein Verschleiß wenigstens im Wesentlich gleichmäßig verteilt und/oder ein vorzeitiger Ausfall einer der Heizfrequenzeinheiten vermieden werden kann. Insbesondere kann ein guter Kompromiss zwischen optimaler Wärmeverteilung und ausgeglichener Auslastung der Heizfrequenzeinheiten ermöglicht werden, und zwar insbesondere bei Aufrechterhaltung einer möglichst hohen Flexibilität.For example, in the operating state, the control unit could operate the induction heating elements in the first time interval with a first phase shift and in the second time interval with a second phase shift, the control unit in the operating state, in particular by adding a constant phase angle, such as 30 ° and / or 45 ° and / or 90 ° and / or 180 °, could determine the first phase shift. In particular, in the case of a constant phase difference between the two phase shifts of 180 ° could be averaged in particular a possibly defective contact of the induction heating. In particular, a simple and / or rapid contacting of the induction heating elements could thereby be made possible, as a result of which, in particular, low costs can be achieved. In particular, it is possible to dispense with checking for correct contacting of the induction heating elements during assembly, as a result of which a quick and / or uncomplicated installation process can be made possible. In the operating state, the control unit preferably determines the second phase shift from a difference of 360 ° and / or 0 ° and the first phase shift. As a result, in particular a symmetrical and / or optimized heating of cooking utensils and / or a particularly advantageous and / or even heat distribution can be made possible. In particular, a heat distribution between at least two induction heating elements, which are in particular arranged adjacent to one another and in particular form a common heating zone, can be optimized and / or chosen as desired. In particular, a power of a respective heating frequency unit which is assigned to a respective one of the induction heating elements, averaged over the time intervals are compensated, whereby in particular all Heizfrequenzeinheiten provide the same power and / or claimed the same, which in particular distributes wear at least substantially evenly and / or premature failure of one of the heating frequency units can be avoided. In particular, a good compromise between optimal heat distribution and balanced utilization of the heating frequency units can be made possible, in particular while maintaining the highest possible flexibility.
Beispielsweise könnte die Steuereinheit ein erstes Induktionsheizelement der Induktionsheizelemente mit einer ersten Frequenz und ein von dem ersten Induktionsheizelement verschiedenes zweites Induktionsheizelement der Induktionsheizelemente mit einer zweiten Frequenz betreiben, welche insbesondere ein ganzzahliges Vielfaches der ersten Frequenz sein könnte. Insbesondere könnte das ganzzahlige Vielfache einen Wert von mindestens zwei annehmen und insbesondere ungleich Null und/oder ungleich eins annehmen. Vorzugsweise betreibt die Steuereinheit in dem Betriebszustand die Induktionsheizelemente mit wenigstens im Wesentlichen und insbesondere mit genau gleicher Frequenz. Unter "wenigstens im Wesentlichen" gleicher Frequenz sollen insbesondere zumindest zwei Frequenzen verstanden werden, bei welchen ein Quotient aus einer kleineren Frequenz der Frequenzen und einer größeren Frequenz der Frequenzen einen Wert von mindestens 0,9, insbesondere von mindestens 0,95, vorteilhaft von mindestens 0,97, besonders vorteilhaft von mindestens 0,98 und vorzugsweise von mindestens 0,99 annimmt. Dadurch kann insbesondere Intermodulationsbrummen vermieden werden.For example, the control unit could operate a first induction heating element of the induction heating elements with a first frequency and a second induction heating element of the induction heating elements different from the first induction heating element with a second frequency, which could in particular be an integer multiple of the first frequency. In particular, the integer multiple could assume a value of at least two and in particular assume non-zero and / or not equal to one. In the operating state, the control unit preferably operates the induction heating elements with at least substantially and in particular with exactly the same frequency. By "at least substantially" the same frequency is to be understood in particular at least two frequencies in which a quotient of a lower frequency of the frequencies and a higher frequency of the frequencies has a value of at least 0.9, in particular of at least 0.95, advantageously of at least 0.97, more preferably at least 0.98, and preferably at least 0.99. As a result, in particular intermodulation drone can be avoided.
Zudem wird vorgeschlagen, dass die Induktionsheizelemente in dem Betriebszustand eine gemeinsame Heizzone ausbilden und insbesondere das gleiche Gargeschirr beheizen. Beispielsweise könnten die Induktionsheizelemente bei einer senkrechten Betrachtung auf eine Haupterstreckungsebene zumindest eines der Induktionsheizelemente konzentrisch zueinander angeordnet sein. Insbesondere könnte ein erstes Induktionsheizelement der Induktionsheizelemente bei einer senkrechten Betrachtung auf eine Haupterstreckungsebene zumindest eines der Heizelemente konzentrisch von einem zweiten Induktionsheizelement der Induktionsheizelemente umgeben sein. Alternativ oder zusätzlich könnten die Induktionsheizelemente bei einer senkrechten Betrachtung auf eine Haupterstreckungsebene zumindest eines der Induktionsheizelemente insbesondere direkt zueinander benachbart angeordnet sein, wobei insbesondere in einer Einbaulage ein insbesondere einziges Gargeschirr oberhalb der Induktionsheizelemente angeordnet sein und sich bei einer senkrechten Betrachtung auf eine Haupterstreckungsebene zumindest eines der Induktionsheizelemente insbesondere über die Induktionsheizelemente erstrecken könnte. Die Induktionsheizelemente könnten insbesondere Teil einer Matrix aus Induktionsheizelementen sein, welche insbesondere durch zumindest drei, insbesondere durch zumindest vier, vorteilhaft durch zumindest fünf, besonders vorteilhaft durch zumindest acht, vorzugsweise durch zumindest zwölf und besonders bevorzugt durch eine Vielzahl an Induktionsheizelementen gebildet sein könnte. Die Induktionsheizelemente könnten insbesondere in einer Reihe angeordnet sein, welche insbesondere Teil der Matrix oder als eine eigenständige Reihe ausgebildet sein könnte. Bei einer senkrechten Betrachtung auf eine Haupterstreckungsebene zumindest eines der Induktionsheizelemente erstreckt sich das Gargeschirr, welches die Induktionsheizelemente insbesondere in dem Betriebszustand beheizen, insbesondere wenigstens zu einem Großteil über eine Erstreckung und/oder über eine Flächenerstreckung der Induktionsheizelemente. Unter "wenigstens zu einem Großteil" soll insbesondere zu einem Anteil, insbesondere einem Massenanteil und/oder Volumenanteil, von mindestens 70 %, insbesondere zu mindestens 80 %, vorteilhaft zu mindestens 90 % und vorzugsweise zu mindestens 95 % verstanden werden. Dadurch kann insbesondere eine symmetrische Beheizung von Heizzonen ermöglicht werden, welche von zumindest zwei Induktionsheizelementen gebildet sind, wodurch insbesondere sogar große Gargeschirre optimal beheizt werden können.In addition, it is proposed that the induction heating elements form a common heating zone in the operating state and in particular heat the same cooking utensil. For example, when viewed perpendicularly, the induction heating elements could be arranged concentrically with one another on a main extension plane of at least one of the induction heating elements. In particular, a first induction heating element of the induction heating elements could, when viewed perpendicular to a main extension plane of at least one of the heating elements, be surrounded concentrically by a second induction heating element of the induction heating elements. Alternatively or additionally, the induction heating elements could be arranged directly adjacent to one another on a main extension plane of at least one of the induction heating elements, in particular in an installation position a particular single cooking utensil be arranged above the induction heating and at a vertical extension to a main extension plane of at least one of Induction heating in particular could extend over the induction heating. In particular, the induction heating elements could be part of a matrix of induction heating elements which can be replaced by at least three, in particular by at least four, advantageously by at least five, particularly advantageously by at least eight, preferably by at least twelve and more preferably could be formed by a plurality of induction heating elements. In particular, the induction heating elements could be arranged in a row, which in particular could be formed as part of the matrix or as a separate row. When viewed perpendicularly on a main extension plane of at least one of the induction heating elements, the cooking utensils which heat the induction heating elements, in particular in the operating state, extend in particular at least to a large extent over an extension and / or over an areal extent of the induction heating elements. By "at least to a large extent" should be understood in particular to a proportion, in particular a mass fraction and / or volume fraction, of at least 70%, in particular at least 80%, advantageously at least 90% and preferably at least 95%. In this way, in particular, a symmetrical heating of heating zones can be made possible, which are formed by at least two induction heating elements, whereby in particular even large cooking utensils can be optimally heated.
Die Erfindung geht weiterhin aus von einem Verfahren zu einem Betrieb einer Induktionsgargerätevorrichtung, mit zumindest zwei Induktionsheizelementen, welche in wenigstens einem Betriebszustand in zumindest einem ersten Zeitintervall mit einer ersten Phasenverschiebung betrieben werden.The invention is further based on a method for operating an induction cooking appliance device, with at least two induction heating elements which are operated in at least one operating state in at least a first time interval with a first phase shift.
Eine besonders optimale Beheizung von Gargeschirr und/oder eine besonders vorteilhafte Wärmeverteilung kann insbesondere erreicht werden, wenn die Induktionsheizelemente in dem Betriebszustand in zumindest einem von dem ersten Zeitintervall verschiedenen zweiten Zeitintervall mit einer von der ersten Phasenverschiebung verschiedenen zweiten Phasenverschiebung betrieben werden.A particularly optimal heating of cooking utensils and / or a particularly advantageous heat distribution can be achieved, in particular, if the induction heating elements are operated in the operating state in at least one second time interval different from the first time interval with a second phase shift different from the first phase shift.
Die Induktionsgargerätevorrichtung soll hierbei nicht auf die oben beschriebene Anwendung und Ausführungsform beschränkt sein. Insbesondere kann die Induktionsgargerätevorrichtung zu einer Erfüllung einer hierin beschriebenen Funktionsweise eine von einer hierin genannten Anzahl von einzelnen Elementen, Bauteilen und Einheiten abweichende Anzahl aufweisen.The induction cooking appliance apparatus should not be limited to the above-described application and embodiment. In particular, to fulfill a mode of operation described herein, the induction cooking appliance apparatus may have a different number than a number of individual items, components, and units referred to herein.
Weitere Vorteile ergeben sich aus der folgenden Zeichnungsbeschreibung. In der Zeichnung sind Ausführungsbeispiele der Erfindung dargestellt. Die Zeichnung, die Beschreibung und die Ansprüche enthalten zahlreiche Merkmale in Kombination. Der Fachmann wird die Merkmale zweckmäßigerweise auch einzeln betrachten und zu sinnvollen weiteren Kombinationen zusammenfassen.Further advantages emerge from the following description of the drawing. In the drawings, embodiments of the invention are shown. The drawing, the description and the claims contain numerous features in combination. The person skilled in the art will expediently also consider the features individually and combine them into meaningful further combinations.
Es zeigen:
- Fig. 1
- ein Induktionsgargerät mit einer Induktionsgargerätevorrichtung in einer schematischen Draufsicht
- Fig. 2
- eine Schaltanordnung der Induktionsgargerätevorrichtung in einer schematischen Darstellung,
- Fig. 3
- ein Diagramm, in welchem eine Frequenz über einer Zeit aufgetragen ist, in einem Betriebszustand in einer schematischen Darstellung,
- Fig. 4
- ein Diagramm, in welchem eine Netzspannung über einer Zeit aufgetragen ist, in dem Betriebszustand in einer schematischen Darstellung,
- Fig. 5
- ein Diagramm, in welchem eine Netzspannung über einer Zeit aufgetragen ist, in einem weiteren Betriebszustand in einer schematischen Darstellung und
- Fig. 6
- ein Diagramm, in welchem eine Netzspannung über einer Zeit aufgetragen ist, in einem weiteren Betriebszustand in einer schematischen Darstellung.
- Fig. 1
- an induction cooker with a Induktionsgargerätevorrichtung in a schematic plan view
- Fig. 2
- a switching arrangement of the Induktionsgargerätevorrichtung in a schematic representation,
- Fig. 3
- a diagram in which a frequency is plotted over a time, in an operating state in a schematic representation,
- Fig. 4
- a diagram in which a mains voltage is plotted over a time, in the operating state in a schematic representation,
- Fig. 5
- a diagram in which a mains voltage is plotted over a time, in a further operating state in a schematic representation and
- Fig. 6
- a diagram in which a mains voltage is plotted over a time, in a further operating state in a schematic representation.
Die Induktionsgargerätevorrichtung 10 weist eine Gargeräteplatte 30 auf. In einem montierten Zustand bildet die Gargeräteplatte 30 einen Teil eines Geräteaußengehäuses, insbesondere des Induktionsgargeräts 28, aus. Die Gargeräteplatte 30 bildet in einer Einbaulage einen einem Bediener zugewandten Teil des Geräteaußengehäuses aus. Die Gargeräteplatte 30 könnte beispielsweise als Frontplatte und/oder Deckplatte des Geräteaußengehäuses insbesondere eines als Induktionsbackofen und/oder als Induktionsherd und/oder als Induktionsgarofen ausgebildeten Induktionsgargeräts 28 ausgebildet sein. Im vorliegenden Ausführungsbeispiel ist die Gargeräteplatte 30 als eine Kochfeldplatte ausgebildet. In einem montierten Zustand ist die Gargeräteplatte 30 zu einem Aufstellen von Gargeschirr 34 vorgesehen (vgl.
Die Induktionsgargerätevorrichtung 10 weist eine Bedienerschnittstelle 32 zu einer Eingabe und/oder Auswahl von Betriebsparametern (vgl.
Die Induktionsgargerätevorrichtung 10 weist eine Steuereinheit 14 auf. Die Steuereinheit 14 ist dazu vorgesehen, in Abhängigkeit von mittels der Bedienerschnittstelle 32 eingegebenen Betriebsparametern Aktionen auszuführen und/oder Einstellungen zu verändern.The induction
Die Induktionsgargerätevorrichtung 10 weist im vorliegenden Ausführungsbeispiel sechs Induktionsheizelemente 12 auf. Von mehrfach vorhandenen Objekten ist in den Figuren jeweils lediglich eines mit einem Bezugszeichen versehen. Jeweils zwei der Induktionsheizelemente 12 bilden in einem Betriebszustand eine gemeinsame Heizzone 26 aus. Im Folgenden werden lediglich die zwei Induktionsheizelemente 12 beschrieben, welche in dem Betriebszustand eine gemeinsame Heizzone 26 ausbilden. Beispielhaft werden im Folgenden die Induktionsheizelemente 12 beschrieben, welche benachbart zueinander angeordnet sind. Eine Beschreibung für Induktionsheizelemente 12, welche in anderer Form relativ zueinander angeordnet sind und eine gemeinsame Heizzone 26 zu einer Beheizung eines insbesondere einzigen Gargeschirrs 34 ausbilden, erfolgt analog.The
Die Induktionsheizelemente 12 sind dazu vorgesehen, auf der Gargeräteplatte 30 oberhalb der Induktionsheizelemente 12 aufgestelltes Gargeschirr 34 zu erhitzen. In dem Betriebszustand führen die Induktionsheizelemente 12 aufgestelltem Gargeschirr 34 Energie zu. Die Steuereinheit 14 regelt in dem Betriebszustand eine Energiezufuhr zu den Induktionsheizelementen 12. In einer Einbaulage sind die Induktionsheizelemente 12 unterhalb der Gargeräteplatte 30 angeordnet.The
Die Induktionsgargerätevorrichtung 10 weist eine Versorgungseinheit 36 auf (vgl.
In dem Betriebszustand sind die Induktionsheizelemente 12 jeweils in einer Halbbrückenschaltung angeordnet, wie diese im Stand der Technik weitläufig bekannt ist. Daher wird im Folgenden eine Schaltung der Induktionsheizelemente 12 nicht weiter beschrieben.In the operating state, the
In dem Betriebszustand betreibt die Steuereinheit 14 die Induktionsheizelemente 12 in einem ersten Zeitintervall 16 mit einer ersten Phasenverschiebung 40 (vgl.
Die Steuereinheit 14 betreibt in dem Betriebszustand die Induktionsheizelemente 12 in einem von dem ersten Zeitintervall 16 verschiedenen zweiten Zeitintervall 18 mit einer von der ersten Phasenverschiebung 40 verschiedenen zweiten Phasenverschiebung 42. Das zweite Zeitintervall 18 ist ein ganzzahliges Vielfaches einer halben Periodendauer 46 einer Netzspannung 24. Im vorliegenden Ausführungsbeispiel ist das zweite Zeitintervall 18 eine halbe Periodendauer 46 der Netzspannung 24.In the operating state, the
Das zweite Zeitintervall 18 schließt sich direkt an das erste Zeitintervall 16 an. Die Steuereinheit 14 wiederholt in dem Betriebszustand das erste Zeitintervall 16 und das zweite Zeitintervall 18 periodisch.The
Ein Übergang zwischen den Zeitintervallen 16, 18 ist in einem Bereich eines Nulldurchgangs 22 der Netzspannung 24. In dem Betriebszustand verändert die Steuereinheit 14 die Phasenverschiebung 40, 42 in dem Bereich eines Nulldurchgangs 22 der Netzspannung 24.A transition between the
Die Steuereinheit 14 betreibt in dem Betriebszustand die Induktionsheizelemente 12 mit im Wesentlichen gleicher Frequenz (vgl.
Im vorliegenden Betriebszustand, welcher insbesondere in
In einem Verfahren zu einem Betrieb der Induktionsgargerätevorrichtung 10 werden in dem Betriebszustand die Induktionsheizelemente 12 in dem ersten Zeitintervall 16 mit einer ersten Phasenverschiebung 40 betrieben. Die Induktionsheizelemente 12 werden in dem Betriebszustand in einem von dem ersten Zeitintervall 16 verschiedenen zweiten Zeitintervall 18 mit einer von der ersten Phasenverschiebung 40 verschiedenen zweiten Phasenverschiebung 42 betrieben.In a method for operation of the induction
In einem Betriebszustand, welcher insbesondere in
Das dritte Zeitintervall 20 ist ein ganzzahliges Vielfaches einer halben Periodendauer 46 einer Netzspannung 24. Jedes der Zeitintervalle 16, 18, 20 ist ein ganzzahliges Vielfaches einer halben Periodendauer 46 einer Netzspannung 24. Im vorliegenden Betriebszustand, welcher insbesondere in
Das zweite Zeitintervall 18 schließt sich direkt an das erste Zeitintervall 16 an. Das dritte Zeitintervall 20 schließt sich direkt an das zweite Zeitintervall 18 an. Die Steuereinheit 14 wiederholt in dem Betriebszustand das erste Zeitintervall 16 und das zweite Zeitintervall 18 und das dritte Zeitintervall 20 periodisch.The
In einem Betriebszustand, welcher insbesondere in
Das dritte Zeitintervall 48 ist ein ganzzahliges Vielfaches einer halben Periodendauer 46 einer Netzspannung 24. Jedes der Zeitintervalle 16, 18, 48 ist ein ganzzahliges Vielfaches einer halben Periodendauer 46 einer Netzspannung 24. Im vorliegenden Betriebszustand, welcher insbesondere in
Das zweite Zeitintervall 18 schließt sich direkt an das erste Zeitintervall 16 an. Das dritte Zeitintervall 48 schließt sich direkt an das zweite Zeitintervall 18 an. Die Steuereinheit 14 wiederholt in dem Betriebszustand das erste Zeitintervall 16 und das zweite Zeitintervall 18 und das dritte Zeitintervall 48 periodisch.The
- 1010
- InduktionsgargerätevorrichtungInduktionsgargerätevorrichtung
- 1212
- Induktionsheizelementinduction heating
- 1414
- Steuereinheitcontrol unit
- 1616
- Erstes ZeitintervallFirst time interval
- 1818
- Zweites ZeitintervallSecond time interval
- 2020
- Drittes ZeitintervallThird time interval
- 2222
- NulldurchgangZero-crossing
- 2424
- Netzspannungmains voltage
- 2626
- Heizzoneheating zone
- 2828
- InduktionsgargerätInduktionsgargerät
- 3030
- GargeräteplatteGargeräteplatte
- 3232
- BedienerschnittstelleOperator Interface
- 3434
- Gargeschirrcooking containers
- 3636
- Versorgungseinheitsupply unit
- 3838
- HeizfrequenzeinheitHeizfrequenzeinheit
- 4040
- Erste PhasenverschiebungFirst phase shift
- 4242
- Zweite PhasenverschiebungSecond phase shift
- 4444
- Dritte PhasenverschiebungThird phase shift
- 4646
- Halbe PeriodendauerHalf period duration
- 4848
- Drittes ZeitintervallThird time interval
Claims (11)
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ES201731304A ES2716422A1 (en) | 2017-11-08 | 2017-11-08 | Induction cooking appliance device. (Machine-translation by Google Translate, not legally binding) |
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EP3484242B1 EP3484242B1 (en) | 2021-07-21 |
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WO2021115871A1 (en) * | 2019-12-13 | 2021-06-17 | BSH Hausgeräte GmbH | Induction device |
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DE102012209385A1 (en) * | 2012-06-04 | 2013-12-05 | Zf Friedrichshafen Ag | Method for controlling heater used in hearth for cooking food, involves distributing each cooking plate based on the pulse durations in the switching period of the switching cycle |
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2017
- 2017-11-08 ES ES201731304A patent/ES2716422A1/en not_active Withdrawn
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2018
- 2018-10-16 ES ES18200586T patent/ES2886592T3/en active Active
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JP2007080553A (en) * | 2005-09-12 | 2007-03-29 | Matsushita Electric Ind Co Ltd | Induction heating cooker |
EP2445307A1 (en) * | 2010-10-21 | 2012-04-25 | FagorBrandt SAS | Method for testing periodic control signals, in particular for an induction cooktop |
DE102012220324A1 (en) * | 2011-12-05 | 2013-06-06 | BSH Bosch und Siemens Hausgeräte GmbH | Induction heater for domestic appliance e.g. cook hob, has frequency units that are operated at different phase of multi-phase current connection |
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Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2021115871A1 (en) * | 2019-12-13 | 2021-06-17 | BSH Hausgeräte GmbH | Induction device |
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Publication number | Publication date |
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ES2716422A1 (en) | 2019-06-12 |
ES2886592T3 (en) | 2021-12-20 |
EP3484242B1 (en) | 2021-07-21 |
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