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WO2019135118A1 - Système de table de cuisson - Google Patents

Système de table de cuisson Download PDF

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Publication number
WO2019135118A1
WO2019135118A1 PCT/IB2018/059322 IB2018059322W WO2019135118A1 WO 2019135118 A1 WO2019135118 A1 WO 2019135118A1 IB 2018059322 W IB2018059322 W IB 2018059322W WO 2019135118 A1 WO2019135118 A1 WO 2019135118A1
Authority
WO
WIPO (PCT)
Prior art keywords
induction
power
targets
induction targets
hob device
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.)
Ceased
Application number
PCT/IB2018/059322
Other languages
German (de)
English (en)
Inventor
Tomas Cabeza Gozalo
Alberto Dominguez Vicente
Sergio Llorente Gil
Ignacio Lope Moratilla
Jesus Manuel Moya Nogues
Ramon Peinado Adiego
Javier SERRANO TRULLEN
David Valeau Martin
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BSH Hausgeraete GmbH
Original Assignee
BSH Hausgeraete GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by BSH Hausgeraete GmbH filed Critical BSH Hausgeraete GmbH
Priority to DE112018006788.2T priority Critical patent/DE112018006788A5/de
Publication of WO2019135118A1 publication Critical patent/WO2019135118A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • G—PHYSICS
    • G05—CONTROLLING; REGULATING
    • G05F—SYSTEMS FOR REGULATING ELECTRIC OR MAGNETIC VARIABLES
    • G05F1/00—Automatic systems in which deviations of an electric quantity from one or more predetermined values are detected at the output of the system and fed back to a device within the system to restore the detected quantity to its predetermined value or values, i.e. retroactive systems
    • G05F1/10—Regulating voltage or current 
    • G05F1/12—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC
    • G05F1/40—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices
    • G05F1/44—Regulating voltage or current  wherein the variable actually regulated by the final control device is AC using discharge tubes or semiconductor devices as final control devices semiconductor devices only
    • 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
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • H05B6/1209—Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1245—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements
    • H05B6/1272—Cooking devices induction cooking plates or the like and devices to be used in combination with them with special coil arrangements with more than one coil or coil segment per heating zone
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate

Definitions

  • the invention relates to a hob device according to the preamble of claim 1 and a method for operating a hob device according to the preamble of claim 11.
  • the publication EP 1 683 257 B1 discloses in this context a converter circuit which operates at least two induction coils which are driven with a respective frequency. Interference generated by interfering signals have a frequency outside human perception.
  • the document EP 1 951 003 B1 discloses a method for a simultaneous operation of two induction heating coils of an induction hob for avoiding acoustic interference frequencies and a temporally uneven network load, wherein in the method in a first time interval, the induction heating coils are operated together with a first frequency and in one second time interval are operated at a second, different from the first frequency frequency.
  • US Pat. No. 7,910,865 B2 discloses a method for operating an induction hob, in which the induction coils are each operated at frequencies during a mode with a common frequency and during another mode, the frequencies having a frequency spacing between 15 kHz and 25 kHz ,
  • the object of the invention is, in particular, a generic
  • the invention is based on a hob device, in particular a
  • Induction hob device with at least three at least partially simultaneously operated induction targets and with a control unit for repetitive supply of the induction targets with a respective average electrical power per one
  • control unit be provided for at least reducing the induction targets, in particular by applying an alternating electromagnetic field having a characteristic frequency, at least one power surplus to the respective average power and at least one power deficit to the respective average power of intermodulation jamming signals, wherein in each time interval an equal number of induction targets have a power surplus or a power deficit.
  • the power of the induction target in the case of power shortage is not equal to 0. Damage to electrical components and / or components due to voltage and / or
  • Performance control will be provided.
  • flicker in particular according to the DIN EN 61000-3-3 standard, can be avoided by an advantageous control of individual induction targets.
  • Heating power can be achieved.
  • a reliable embodiment may preferably be achieved in relation to a desired heating power requested by an operator.
  • various circuit topologies can be realized with advantageous operation in terms of operator comfort.
  • multiple induction targets can advantageously be quiet and with a
  • Induction hob device should be understood in particular at least one part, in particular a subassembly of a hob, in particular an induction cooktop, in particular also accessory units for the cooktop may be included, such as a sensor unit for external measurement of a temperature of a cooking utensils and / or a food.
  • the Hob device in particular the induction hob device, also the entire hob, in particular the entire induction hob, include.
  • Induction hob device at least a part, in particular a subassembly of a household appliance, in particular a cooking appliance, advantageously hob and particularly advantageously an induction cooktop understood.
  • control unit is to be understood as meaning, in particular, an electronic unit which is preferably located in a control and / or regulating unit of a control unit
  • Hob device in particular an induction hob device, at least partially integrated and which is preferably provided, at least one inverter, in particular a resonant inverter and / or a dual
  • Control unit a computing unit and in particular in addition to the arithmetic unit, a memory unit with a stored therein control and / or control program, which is intended to be executed by the arithmetic unit.
  • a "intermodulation" being intended in particular a coupling of at least two different frequencies fi, f 2 be understood, in particular a
  • Difference frequency may arise, which corresponds to a difference fi-f 2 of the frequencies T, f 2 .
  • An "induction target” is to be understood here in particular as a heating element or a group of heating elements, which in at least one
  • Operating state can be supplied together as a unit with an electrical energy for generating a desired heating power for heating a cookware, wherein one or more induction targets can heat together a cookware.
  • the heating elements of the group of heating elements can provide different heating capacities in comparison with one another in at least one operating state.
  • a single heating element can provide a different heating power during at least one operating state over time.
  • a "heating element” is to be understood here as meaning in particular an element which, in at least one operating state, supplies energy for the purpose of heating the cookware to at least one cookware.
  • the heating element could be designed as a resistance heating element and in particular be provided to convert energy into heat and supply it to the cookware for the purpose of heating the cookware.
  • the heating element can be used as an induction heating element, in particular as an inductor, which in particular has at least one induction coil, be designed and be provided in particular to supply energy in the form of an alternating electromagnetic field with a heating frequency of the cookware, wherein the energy supplied to the cookware can be converted in particular in the cookware into heat.
  • the heating elements are arranged in particular below at least one variable cooktop area and are advantageously arranged in a vicinity of the variable cooktop area.
  • a “repetitive supply” of a unit is to be understood here as meaning in particular a supply that repeats periodically in at least one operating state, in particular with an electrical energy and / or an electrical power.
  • An “average electrical power” is to be understood in particular over a period of time, in particular over an operating period, averaged, in particular the induction target, supplied electrical power.
  • the average electrical power corresponds to one set by the operator
  • An "operating period” is to be understood in particular a time period during which the induction target is operated.
  • the induction target is activated during the operating period, wherein the induction target, an electrical energy can be supplied, wherein the electrical energy can be vanishingly small.
  • the operating period is divided into at least two time intervals, during which in particular the induction target is supplied with a constant electrical energy.
  • time interval is meant in particular a time span whose duration is longer than 0 s and shorter than the operating period.
  • a “surplus power” should be understood in particular to mean a power whose mean value, with respect to a time interval, exceeds the average power.
  • the surplus power can be created by creating a
  • alternating magnetic field are achieved with a heating frequency different from a target frequency, wherein in an operation of the induction target with the target frequency is provided by the operator and / or set power is provided.
  • the power surplus is achievable in an operation of the cooktop device in a ZVS mode with a heating frequency which is less than the target frequency.
  • ZVS mode should in particular be understood to mean a zero-voltage switching mode in which a voltage with a value of approximately equal to zero is present during a switching operation of a switch.
  • ZCS mode is to be understood as meaning in particular a zero-current switching mode in which a current having a value approximately equal to zero is present during a switching operation of a switch.
  • a "power deficit” is to be understood in particular as meaning a power whose mean value falls short of the average power in relation to a time interval.
  • the power deficit can be achieved by the application of an alternating electromagnetic field with a heating frequency different from a target frequency, wherein an operation of the induction target with the target frequency provides a power required and / or set by the operator.
  • the power deficit is achievable in an operation of the cooktop device in a ZVS mode with a heating frequency which is higher than the target frequency.
  • the power deficit is achievable in an operation of the cooktop device in a ZCS mode with a heating frequency which is less than the target frequency.
  • intermodulation interference signal is to be understood in particular as an acoustic signal that can be perceived by humans with average hearing, which can result from intermodulation, in particular due to an electrical supply of induction coils and, in particular, has a maximum frequency of 20 kHz.
  • control unit be provided in each
  • the control unit operates an induction target different from an induction target operated in the time interval Surplus or a deficit.
  • the control unit operates each induction target only once with the power surplus or power deficit.
  • each of the induction targets has a non-zero power in the presence of the power deficit.
  • the surplus power and the power deficit can be controlled by a suitable choice of heating frequencies
  • Induction targets are adjusted.
  • a number of time intervals corresponds to a number of induction targets.
  • each time interval has exactly one excess power or one power deficit.
  • each induction target has exactly one power surplus or one power deficit in one operating period.
  • control unit is provided to adjust a duration of the time intervals. This allows an accurate control of
  • Average power can be achieved.
  • the sum of the time intervals gives a duration of the operating period.
  • respective performance surpluses and / or performance deficits can be weighted appropriately by means of a respective length of the time intervals.
  • the control unit fits the respective length of the
  • control unit is provided to the
  • the term "at least essentially” should be understood in particular to mean that a deviation from a predefined value, in particular less than 25%, preferably less than 10% and particularly preferably less than 5% of the value
  • the power of the individual induction targets may be the same or different, the sum of the powers of the individual induction targets being equal to the total power.
  • the total power over the entire operating period is constant.
  • control unit may jointly operate a single induction target, multiple induction targets or all induction targets in a time interval. At a Operation of multiple or all induction targets in a time interval may be
  • Heating frequency of at least two induction targets to be the same.
  • the frequency spacing is greater than 16 kHz, preferably greater than 20 kHz.
  • the cooktop device has a resonant inverter, which is intended to operate in parallel at least two induction targets with the same heating frequency.
  • the resonance inverter can be electrically connected to the induction targets by means of at least one, in particular electromechanical or semiconductor-based, switching element.
  • the hob device at least one
  • Cooking zone having at least two induction targets, wherein at least one of the induction targets has at least two inductors.
  • the inductors of each induction target by a common power and / or
  • a uniform temperature distribution can be achieved within the cooking zone. This allows a flexible control of a cooking performance.
  • control unit is provided to the at least two induction targets in at least one time interval, each with different powers and / or each with different
  • an induction target can be specifically switched off in at least one operating state.
  • a cookware heated by a plurality of induction targets can be supplied with heating power.
  • the hob device has a voltage supply unit which is provided to provide phase-shifted voltages, wherein the control unit is provided to supply at least two, in particular overlapping, inductors with the phase-shifted voltages to an electrical energy supply.
  • the phase shift can be varied.
  • a phase shift between the voltages has a value between 40 ° and 70 °, advantageously 55 ° and 65 °, particularly preferably 60 °.
  • the voltage supply unit has at least one dual half-bridge inverter.
  • the dual half-bridge inverter has two resonant inverters. Both resonant inverters provide electrical energy for each of the overlapping inductors.
  • the dual points are two resonant inverters. Both resonant inverters provide electrical energy for each of the overlapping inductors.
  • Half-bridge inverter for each inductor at least one in particular
  • a simple, flexible and / or comfortable control of the induction targets can be achieved in particular by a method for operating a cooktop apparatus, in particular an induction cooktop apparatus with at least three induction targets to be operated at least simultaneously, the induction targets having a respective average electrical power per one operating period with at least two Time intervals are supplied repetitively, with the induction targets in each
  • Intermodulation interference signals are operated, wherein in each time interval an equal number of induction targets have a power surplus or a power deficit.
  • the method comprises in particular a first, a second and a third phase.
  • the first phase which comprises a first method step of the method, a respective target frequency is determined for each induction target, in which the respective induction target provides a heating power set by the operator.
  • the second phase comprises several process steps of the process, which are adapted to different topologies of the hob device. The second phase will be in one
  • K is at least equal to a number M of the induction targets. At most, K can have a value of 2 L M-2. Preferably, K equals M, with exactly one induction target having a power surplus or power deficit in a time interval.
  • the following is the second phase for the ZVS mode. In an i-th run of the repetition loop of the second phase is preferably first in a second process step, an activation pattern for determines the i-th time interval, wherein the activation pattern comprises induction targets with a power surplus and induction targets with a power deficit.
  • the number of activation patterns preferably corresponds to a number of all possible ones
  • the induction targets become one
  • the induction targets with a power deficit and with a higher target frequency than the induction targets with the power surplus are placed in the high frequency group. If induction targets, which according to the activation pattern are intended to provide a power deficit, do not provide a power deficit, it is preferable to classify these induction targets into the high frequency group. If induction targets, which according to the activation pattern are intended to provide a power deficit, do not provide a power deficit, they are preferably
  • Induction targets separated from an electrical power supply.
  • a duration of the time intervals is preferably adapted, whereby conditions of a flicker-free, noiseless operation and an operation in which one set by the operator
  • a particularly comfortable and in particular noise-free use can be achieved in particular by a hob, in particular an induction hob, with at least one hob according to the invention.
  • the hob device should not be limited to the application and embodiment described above.
  • the cooktop apparatus may perform any of the functions described herein, such as one of those recited herein io
  • FIG. 2 a) noise-free activation sequences for three induction targets b) activation sequence matrices each with a power surplus and a power deficit, FIG.
  • 3 a shows a cost-efficient embodiment of the cooktop apparatus in a first embodiment with four induction targets of the cooktop apparatus
  • Hob device according to the cost-efficient embodiment of the Hob device
  • Fig. 6 shows another embodiment of the hob apparatus in a first
  • Version with four induction targets of the hob device shows the further embodiment of the hob device in a second embodiment with three induction targets
  • Hob device according to the further embodiment of the Hob device,
  • Fig. 9 is an exemplary illustration of two possible
  • FIG. 10 shows an exemplary embodiment of a flexible cooktop apparatus with a first occupancy of three induction targets of the cooktop apparatus
  • FIG. 11 shows the embodiment of the flexible hob device with a second assignment of the three induction targets of the hob device
  • Fig. 12 shows an embodiment of the flexible hob device in one
  • FIG. 13 a a process diagram of a method for operating the flexible
  • FIG. 14 shows an exemplary representation of a possible activation sequence of the three induction targets according to the method for operating the first embodiment with the first and the second occupancy of the flexible cooktop apparatus and
  • 15 is an exemplary illustration of a possible activation sequence of the four induction targets according to the method for operating the second embodiment of the flexible cooktop apparatus.
  • Fig. 1 shows a hob 26, which is designed as an induction hob 38.
  • the induction hob 38 is designed as a matrix cooktop 40.
  • the hob 26 has a hob device 10.
  • the hob device 10 is as a
  • the hob device 10 has a
  • the hob device 10 has a plurality of heating elements 70 for heating the cookware 72. Of multiply existing objects, only one is provided with a reference numeral in the figures. In the present exemplary embodiment, the hob device 10 has forty-eight heating elements 70. The heating elements 70 are arranged in an installed state below the footprint 74. The heating elements 70 are provided to the on the footprint 74 on the
  • Heating elements 70 set up cookware 72 to heat.
  • the heating elements 70 are designed as inductors 34.
  • the inductor 34 has at least one induction coil 76.
  • a group of inductors 34 forms an induction target 12.
  • the induction target 12 may also be formed by a single inductor 34.
  • the cooktop apparatus 10 has a control panel 42 for input and / or selection of operating parameters by an operator, such as a heating power and / or cooking time.
  • the control panel 42 is designed as a display 78.
  • Control panel 42 is provided for outputting a value of an operating parameter to the operator.
  • a heating power of each induction target 12 is dependent on the heating frequency applied to the induction target 12.
  • the heating power of an induction target 12 increases as the heating frequency decreases.
  • the heating power of an induction target 12 decreases as the heating frequency decreases.
  • the hob apparatus 10 is operated in ZVS mode.
  • the hob device 10 has a control unit 14.
  • the control unit 14 is provided depending on inputted by means of the control panel 42
  • Operating parameters perform actions and / or algorithms and / or to change settings.
  • the control unit 14 regulates in a heating operating state of the control unit 14, a power supply to the heating elements 70.
  • the control unit 14 is for repetitive supply of at least three at least partially simultaneously operated
  • Induction targets 12 are provided.
  • the control unit 14 repetitively operates the induction targets 12 over a total cooking time.
  • the cooking time is divided into operating periods 16.
  • the control unit 14 supplies the induction targets 12 with an electrical energy. During one
  • Operating period 16 supplies the control unit 14, the induction targets 12 with a respective average power 20.
  • the average power 20 corresponds to one of Operator entered on the control panel 42 value of a desired cooking performance.
  • the operating period 16 is divided into a plurality of time intervals 18. The individual time intervals 18 can each have a different duration.
  • a number of the time intervals 18 corresponds to a number of the induction targets 12. However, it is conceivable that the number of time intervals 18 is greater than the number of induction targets 12.
  • the control unit 14 operates the induction targets 12 in each time interval 18 of FIG.
  • Induction targets 12 exactly one power surplus 22 on.
  • control unit 14 operates the induction targets 12 with exactly one power deficit 24 compared to the respective average power 20.
  • control unit 14 operates the induction targets 12 with exactly one power deficit 24 compared to the respective average power 20.
  • an equal number of induction targets 12 in each time interval 18 has exactly one power deficit 24.
  • the control unit 14 selects the heating frequency of the respective induction target 12.
  • a selection of the heating frequencies is such that the heating frequencies do not produce an acoustically perceptible by humans with average hearing intermodulation interference.
  • the Intermodulationstörsignale arise by coupling at least two heating frequencies, which have a frequency spacing from each other of less than 17 kHz.
  • a heating frequency of an induction target 12 may in a time interval 18 a
  • Frequency spacing of at least 17 kHz from other heating frequencies of the other induction targets 12 have. All heating frequencies may have a same frequency in a time interval 18. In a time interval 18, all induction targets 12 can be operated simultaneously. In a time interval 18, a smaller number than the number of existing induction targets 12 can be operated.
  • a sum of the heating powers of the induction targets 12 in a time interval 18 forms a total power 28.
  • the total power 28 is constant in each time interval 18 over the entire operating period 16.
  • the total power 28 is regulated by the control unit 14.
  • FIG. 2 a shows by way of example all possible noise-free activation sequences 138 with three induction targets 12.
  • the induction targets 12 are activated individually with a heating frequency fpi, fp 2, fp3.
  • the activation sequences 138 four to six each show two induction targets 12 activated with a same heating frequency f ci, 2, f d, 3.
  • the seventh activation sequence 138 shows all three activated induction targets 12 with the same heating frequency fci , 2 , 3.
  • Induction targets 12 which are operated with two different heating frequencies.
  • the heating frequency of the first induction target 12 foF 1/2 and the second induction target 12 f DF i / 2 + DF wherein the heating frequency of the first induction target 12 is lower than the heating frequency of the second induction target 12 and the heating frequencies a distance of at least 17 kHz respectively.
  • the activation sequences 138 fourteen to nineteen show all three activated induction targets 12, wherein in each case two of the three induction targets 12 are operated with a same heating frequency and an induction target 12 with a different heating frequency, the heating frequencies having a frequency difference of at least 17 kHz.
  • the activation sequence fourteen shows a first heating frequency foF 1 / 2,3, which is one compared to heating frequencies foF 1 / 2,3 + DF of the second and third
  • Induction target 12 by at least 17 kHz smaller value.
  • the number of possible activation sequences 138 to be selected is equal to the number of induction targets 12 N.
  • a proposed, reduced number of possible combinations in the case of three induction targets 12 T 5. All possible activation sequences 138, for example with a power surplus 22 or a power deficit 24 in a time interval 18, which is represented in each case as a column, are in this case in a
  • Activation sequence matrix 140 summarized ( Figure 2 b).
  • the control unit 14 determines the activation sequence matrix 140.
  • FIG. 2 b shows by way of example two of the five possible activation sequence matrices 140.
  • the first activation sequence matrix 140 has a power surplus 22.
  • the second activation sequence matrix 140 has a power deficit 24.
  • each activation sequence matrix 140 5 power surplus 22 is represented in each activation sequence matrix 140 as a plus sign +.
  • the power deficit 24 is shown in each activation sequence matrix 140 as a minus sign -.
  • Each column of the activation sequence matrix 140 contains more than one noiseless activation sequence 138 (see Figure 2 a)), the
  • Noise-free activation sequences 138 are summarized in a column.
  • Fig. 3 a shows a cost-efficient embodiment of the hob apparatus 10 in a first embodiment.
  • Hob device 10a has four induction targets 12a. Each induction target 12a is intended to receive a respective cookware 72
  • Hob device 10a has a resonant inverter 30a.
  • Resonant inverter 30a is provided to operate in parallel the four induction targets 12a with the same heating frequency.
  • the cooktop device 10a each has an electromechanical switch 60 per an induction target 12a.
  • the electromechanical switch 60 is designed as a relay 62.
  • the induction targets 12a are connectable to an electrical power supply 86 through the relays 62-20.
  • the hob apparatus 10a has in each case one capacitor 66a per an induction target 12a. Each induction target 12a can be controlled individually.
  • Fig. 3 (b) shows a second embodiment of the cost-efficient embodiment of the hob apparatus 10.
  • the second embodiment is substantially identical to the first embodiment.
  • the hob device 10b has one capacitor 66b per two induction targets 12b. Each induction target 12b can be controlled individually.
  • Fig. 3 c shows a third embodiment of the cost-efficient embodiment of the cooktop apparatus 10.
  • the cooktop apparatus 10c has a matrix multi-inverter topology 68c.
  • Hob device 10c includes a plurality of semiconductor-based high frequency switches 64c.
  • the difference from the first embodiment of the cost-efficient embodiment of the hob apparatus 10a is that the electromechanical switches 60 formed as relays 62a, b are replaced by the semiconductor-based high frequency switches 64c.
  • Each induction target 12c can be controlled individually.
  • Fig. 4 shows a method 112a for operating the first, second and third embodiments of the cost-efficient embodiment of the hob apparatus 10.
  • the first, second and third embodiments of the cost-efficient embodiment of the cooktop apparatus 10 are operated in a ZVS mode.
  • the method 112a has three phases 80a, 82a, 110a.
  • the method 112a has seven method steps 44a, 48a-58a.
  • the method 112a has a first phase 80a.
  • the first phase 80a of the method 112a comprises a first method step 44a.
  • respective target frequencies of the induction targets 12a, b, c are searched for.
  • the method 112a has a second phase 82a.
  • Method 112a includes five method steps 48a-56a.
  • the second phase 82a is repeated K times.
  • a repetition number K of the second phase 82a is equal to the number of induction targets 12a, b, c of the respective execution of the cost-efficient one
  • the index i is an integer and is between 1 and K.
  • an activation sequence 138a is searched in an ith time interval 18a.
  • a second phase 82a of the method 112a method steps two through six 48a-56a are performed four times. A number of the recoveries of
  • Method steps two through six 48a-56a is equal to the number of respective ones
  • Time intervals 18a, b, c A number of repetitions of process steps two through six 48a-56a is equal to the number of induction targets 12a, b, c.
  • the second phase 82a comprises a second method step 48a.
  • Method step 48a is an activation sequence 138a, b, c with a
  • the second phase 82a comprises a third method step 50a.
  • the induction target 12a, b, c is connected to the power surplus 22a by a corresponding switch 84a, b, c with an electrical energy supply 86.
  • the second phase 82a comprises a fourth method step 52a.
  • Step 52a induction targets 12a, b, c, which have a target frequency smaller than the induction target 12a, b, c with the excess power 22a, b, c, with a Power deficit 24a, b, c connected by a corresponding switch 84a, b, c to the electrical power supply 86.
  • the second phase 82a comprises a fifth method step 54a.
  • the fifth method step 54a In the fifth
  • Process step 54a becomes induction targets 12a, b, c with a power deficit 24a, b, c having a higher target frequency than the induction target 12a, b, c with the
  • Power surplus 22a, b, c separated from the electrical power supply 86 by a corresponding switch 84a, b, c.
  • induction targets 12a, b, c which according to the activation sequence 138a are intended to provide a power deficit 24a, b, c, have no power deficit 24a, b, c
  • the switch 84a, b is formed as an electromechanical switch 60a, b.
  • the switch 84a, b is formed as a relay 62a, b.
  • the switch 84c is formed as a high-frequency switch 64c.
  • the method 112a has a third phase 82a.
  • Method 112a includes a seventh method step 58a.
  • Time intervals 18a, b, c are adapted in the seventh method step 58a.
  • Average power 20a, b, c of the respective induction target 12a, b, c is set by means of the duration of the time intervals 18a, b, c.
  • the induction targets 12a, b, c in the low frequency group are operated at a common heating frequency.
  • the induction targets 12a, b, c in the high frequency group are operated at a common heating frequency.
  • the heating frequency of the low frequency group has a value smaller by at least 17 kHz than the heating frequency of
  • Process steps one through seven 44a, 48a-58a are repetitively repeated over a total cooking time.
  • 5a) and 5b) respectively show an example of the operation of the first, second and third embodiments of the cost-efficient embodiment according to the method 112a with a power surplus 22a, b, c and a power deficit 24a, b, c per time interval 18a, b c.
  • Corresponding activation sequences 138a, b, c are shown in the form of an activation sequence matrix 140a, b, c.
  • the activation sequence matrix 140a, b, c contains characters + and the plus sign + stands for a performance surplus 22a, b, c.
  • the minus sign - represents a power deficit 24a, b, c.
  • the time intervals 18a, b, c are represented by columns of the respective activation sequence matrix 140a, b, c.
  • the columns of the respective activation sequence matrix 140a, b, c contain all possible ones
  • FIG. 6 shows a further embodiment of the hob device 10 in a first embodiment with four induction targets 12d of the hob device 10d.
  • Induction target 12d has five inductors 34d. Each induction target 12d is supplied with electrical energy in a matrix multi-inverter topology 102d.
  • Hob device 10d has four vector inverters 90.
  • the induction targets 12d are connected to the electric power supply 86d through the respective vector inverters 90d of the cooktop apparatus 10d.
  • Each inductor 34d of an induction target 12d can be supplied with electrical energy independently of other inductors 34d.
  • Each induction target 12d heats a cookware 72d.
  • the control unit 14 controls a power consumption of each induction target 12d.
  • the control unit 14 controls the power consumption of each inductor 34d.
  • the control unit 14 controls the
  • a second embodiment of another embodiment of the invention is shown.
  • the following descriptions are essentially limited to the differences between the embodiments, wherein reference can be made to the description of the embodiment of FIG. 6 with regard to components, features and functions that remain the same.
  • the letter d in the reference numerals of the embodiment in Fig. 6 by the letter e in the Reference number of the embodiment of FIG. 7 replaced.
  • Fig. 7 shows the further embodiment of the hob apparatus 10 in a second embodiment with three induction targets 116e, 118e, 120e.
  • Two cookware 122e, 124e are heated by three induction targets 116e, 118e, 120e.
  • a first cookware 122e is heated by two induction targets 118e, 120e, the two induction targets 118e, 120e being supplied with electrical energy by two different vector inverters 90e.
  • the control unit 14 controls a power consumption of each induction target 116e, 118e, 120e.
  • the control unit 14 controlled the power consumption of each inductor 34e.
  • the control unit 14 controls the power consumption in a time interval 18e by applying a heating frequency to each individual inductor 34e.
  • Hob device 10 is indicated by the letter d.
  • a method 112d for operating the further embodiment in the first embodiment and in the second embodiment of the cooktop apparatus 10 has nine method steps 44d, 48d-58d, 88d, 92d (FIG. 8).
  • the first and second embodiments of the further embodiment of the hob apparatus 10 are operated in ZVS mode.
  • the method 112d has three phases 80d, 82d, 110d.
  • a first phase 80d of the method 112d comprises a first method step 44d.
  • the respective target frequencies of the induction targets 12d, 116e, 118e, 120e are determined.
  • the method 112d has a second phase 82d.
  • the second phase 82d is repeated K times.
  • a repetition number K of the second phase 82d is equal to the number of induction targets 12d, 116e, 118e, 120e of the respective embodiments
  • Embodiment of the hob apparatus 10d e.
  • an activation sequence 138d, e is searched in an ith time interval 18d, e.
  • a repetition number of method steps two to eight 48d-58d, 88d is equal to the number of induction targets 12d, 116e, 118e, 120e.
  • the number of induction targets 12d, 116e, 118e, 120e is equal to the number of time intervals 18d, e.
  • the second phase 82d comprises a second method step 48d.
  • Step 48d becomes an activation sequence 138d, e with a
  • the second phase 82d comprises a third method step 50d.
  • the third method step 50d In the third
  • Process step 50d becomes the induction target 12d, 116e, 118e, 120e with a
  • the second phase 82d comprises a fourth method step 52d.
  • Method step 52d becomes the induction targets 12d, 116e, 118e, 120e with a
  • Target frequency of the induction target 12d, 116e, 118e, 120e with the power surplus 22d, e, classified in the low-frequency group is the target frequency of the induction target 12d, 116e, 118e, 120e with the power surplus 22d, e, classified in the low-frequency group.
  • the second phase 82d comprises a fifth method step 54d.
  • a fifth method step 54d the induction targets 12d, 116e, 118e, 120e are combined with a
  • the second phase 82d comprises a sixth method step 56d. If induction targets 12d, 116e, 118e, 120e, which according to the activation sequence 138d, e are provided to provide a power deficit 24d, e, do not provide a power deficit 24d, e, these induction targets 12d, 116e, 118e, 120e become in the sixth method step 56d arranged in the high frequency group.
  • the second phase 82d comprises a seventh method step 58d. If induction targets 12d, 116e, 118e, 120e, which according to the activation sequence 138d, e are provided to provide a power deficit 24d, e, do not provide a power deficit 24d, e, in the seventh method step 58d at least one inductor 34d, e is replaced by the electric Power supply 86 disconnected.
  • the second phase 82d comprises an eighth method step 88d.
  • induction targets 12d, 116e, 118e, 120e which according to the activation sequence 138d, e are provided to provide a power deficit 24d, e, do not provide a power deficit 24d, e, in the eighth method step 88d all inductors 34d, e of these induction targets 12d, 116e, 118e, 120e separated from the electrical power supply 86d, e.
  • the method steps two to eight 48d-58d, 88d are repeated four times for the first embodiment of the further exemplary embodiment.
  • the method steps two to eight 48d-58d, 88d are repeated three times for the second embodiment of the further exemplary embodiment.
  • a repetition number of method steps 48d-58d, 88d is equal to the number of time intervals 18d, e.
  • a number of retrieval of the process steps 48d-58d, 88d is equal to the number of induction targets 12d, e.
  • the method 112d has a third phase 110d.
  • the third phase 110d comprises a ninth method step 92d.
  • a respective duration of the time intervals 18d, e is adapted.
  • the average power 20d, e of the respective induction target 12d, e is set by means of the duration of the time intervals 18d, e.
  • the induction targets 12d, 116e, 118e, 120e in the low frequency group are operated at a common heating frequency.
  • the induction targets 12d, 116e, 118e, 120e in the high frequency group are operated at a common heating frequency.
  • the heating frequency of the low-frequency group has a value at least 17 kHz smaller than the heating frequency of the high-frequency group.
  • Process steps one through nine 44d, 48d-58d, 88d, 92d are repetitively repeated over a total cooking time.
  • Fig. 9 left shows an exemplary representation of a possible first
  • Embodiment with a power surplus 22e per time interval 18e of the operating period 16e Embodiment with a power surplus 22e per time interval 18e of the operating period 16e.
  • the operating period 16e has three time intervals 18e ti , t 2, t3. In each time interval 18e the total power 28e is constant. Each of the three induction targets 116e, 118e, 120e provides an operator set average power 20e.
  • the first and second induction targets 116e, 118e are operated at a same heating frequency foFi, 2/3.
  • the first induction target 116e provides a Performance surplus 22e.
  • the second induction target 118e provides a power deficit 24e.
  • the third induction target 120e is operated at a further heating frequency f DFi, 2/3 + DF different from the heating frequency.
  • the further heating frequency has a frequency at least 17 kHz higher than the heating frequency.
  • all three induction targets 116e, 118e, 120e are operated at the same frequency fei , 2, 3 .
  • Induction targets 116e, 118e, 120e each provide a different heat output.
  • the first and second induction targets 116e, 118e are operated at the same heating frequency f DF3 / i, 2 + DF .
  • the heating frequency has a frequency at least 17 kHz higher than the heating frequency f DF3 / i, 2 of the third
  • Fig. 9 right shows an exemplary representation of another possible
  • the operating period 16e has three time intervals 18e ti , t 2, tz.
  • the second induction target 118e is disconnected from the electrical power supply 86.
  • the first and the third induction target 116e, 120e are operated with different heating frequencies f DFi / 3, f DFi / 3 + DF .
  • the heating frequency of the third induction target 120e f DFi / 3 + DF is at least 17 kHz greater than the heating frequency f uf / 3 of the first induction target 116e.
  • the first and third induction targets 116e, 120e are disconnected from the electrical power supply 86.
  • the second induction target 118e is supplied with electrical energy at a heating frequency fp 2 .
  • the second and the third induction target 118e, 120e operated with an equal heating frequency fc 2.3.
  • the second and third induction targets 118e, 120e each provide a different heat output.
  • Each of the time intervals 18e ti , t 2 tz has exactly one power surplus 22e.
  • a total power 28e is constant in each of the time intervals 18e ti , t 2, tz over the entire operating period 16e.
  • the induction targets 116e, 118e are at a same heating frequency or in
  • Fig. 10 shows an embodiment of a flexible hob device 10f with a first occupancy.
  • the flexible hob device 10f has three induction targets
  • a cookware 122f, 124f, 126f is placed respectively. Two of the three cookware 122f, 124f are each heated by an inductor pair 128f, 130f. A third cookware 126 f is through two
  • Inducer pairs 132f, 94f heated. Individual inductors 34f of each inductor pair 128, 130, 132, 94 are overlapped. An overlapping arrangement of the individual inductors 96f, 98f of the respective inductor pairs 128f, 130f, 132f, 94f results in a magnetic coupling.
  • Hob device 10f has two dual half-bridge inverters 134f.
  • the dual half-bridge inverters 134f each have two resonant inverters 30f.
  • Two pairs of inductors 128f, 130f, 132f, 94f are each supplied with electrical energy by a dual half-bridge inverter 134f.
  • 128f, 130f, 132f, 94f are each through two resonant inverters 30f of the dual
  • Half-bridge inverter 134f supplied with electrical energy.
  • the control unit 14 sets heating frequency of the inductor pairs 128f, 130f, 132f, 94f.
  • the control unit 14 provides a phase shift between a first supply voltage and a second supply voltage of the dual half-bridge inverter 134f.
  • the phase shift is preferably 60 °.
  • FIG. 11 shows a second layout of the inductor pairs 128f, 130f, 132f, 94f of the flexible cooktop apparatus 10f.
  • the following descriptions are essentially limited to the differences between the first and the second occupancy, wherein reference can be made to the description of the first occupancy in FIG. 10 with regard to components, features and functions that remain the same.
  • the letter f in the reference signs of the exemplary embodiment with the first assignment in FIG. 10 is replaced by the letter g in the reference symbols of the exemplary embodiment of FIG. 11.
  • identically designated components in particular with regard to components having the same reference numerals, it is also possible in principle to refer to the drawings and / or the description of the exemplary embodiment of FIG. 10.
  • Fig. 11 shows the embodiment of the flexible hob device 10f with a second occupancy.
  • the flexible hob device 10f has three induction targets
  • the second occupancy differs from the first occupancy in that the second induction target 118g comprises the third inductor pair 132g and a second inductor 98g of a fourth inductor pair 94g.
  • a first inductor 96g of the fourth inductor pair 94g heats another cookware 122g.
  • the third induction target 120g is occupied by a third cookware 126 g.
  • the first inductor 96g of the fourth inductor pair 94g heats another cookware 122g.
  • the third induction target 120g is occupied by a third cookware 126 g.
  • Inducer pair 128 g is not used and does not form an induction target.
  • FIG. 12 an embodiment of the flexible hob device 10 is shown in a second embodiment. The following descriptions are limited in the
  • the flexible hob apparatus 10h has four induction targets 12h.
  • the induction targets 12h are each supplied with electrical energy by a resonant inverter 30h.
  • Two resonant inverters 30h each form a dual half-bridge inverter 134h.
  • Two resonant inverters 30h each have a common capacitor 66h.
  • the inductors 34h are connected to the capacitor 66h.
  • common capacitor 66h creates an electrical coupling between the inductors 34h.
  • Embodiment of the flexible hob device 10f characterized by the letter f.
  • the first embodiment of the flexible hob apparatus 10f having the first and second occupancy may be operated by a same method 112f.
  • Fig. 13 a shows a process diagram of the method 112f for operating the flexible cooktop apparatus 10f.
  • the method 112f has three phases 80f, 82f, 110f.
  • the method 112f has eight method steps 44f, 48f-58f, 88f.
  • the method 112f has a first phase 80f.
  • the first phase 80f comprises a first method step 44f. In the first method step 44f respective
  • Target frequencies of the induction targets 116f, g, 118f, g, 120f, g determined.
  • the method 112f has a second phase 82f.
  • the second phase 82f comprises six process steps 48f-58f.
  • the second phase 82f is repeated K times.
  • Repetition number K of the second phase 82f is equal to the number of induction targets 116f, g, 118f, g, 120f, g of the respective embodiment.
  • the repetition number K is equal to three.
  • an activation sequence 138f, g is searched in an ith time interval 18f, g.
  • the second phase 82f comprises a second method step 48f.
  • an activation sequence 138f, g with a power surplus 22f, g is sought at one of the induction targets 116f, g, 118f, g, 120f, g. It is also conceivable that in the second method step 48f a
  • the second phase 82f comprises a third method step 50f.
  • the third method step 50f In the third
  • step 50f of the i-th repetition the induction target 116f, g, 118f, g, 120f, g with a power surplus 22f, g is placed in a low frequency group.
  • the second phase 82f comprises a fourth method step 52f.
  • Method step 52f of the ith repeat becomes the induction targets
  • the second phase 82f comprises a fifth method step 54f.
  • the fifth method step 54f In the fifth
  • the second phase 82f comprises a sixth method step 56f. If induction targets 16f, g, 118f, g, 120f, g, which according to the activation sequence 138f, g are provided to provide a power deficit 24f, g, do not provide a power deficit 24f, g, these induction targets 116f, g, 118f, g, 120f , g in the sixth
  • Step 56f of the i-th repetition classified in the high-frequency group is the same as Step 56f.
  • the second phase 82f comprises a seventh process step 58f. If the induction target 116f, g, 118f, g, 120f, g, which according to the activation sequence 138f, g is provided to provide a power deficit 24f, g, does not provide a power deficit 24f, g or an inductor of an inductor pair of the induction target 116f, g, 118f, g, 120f, g is part of another induction target 116f, g, 118f, g, 120f, g with a power surplus 24f, g, this induction target 116f, g, 118f, g, 120f, g is in the seventh process step 58f of FIG the electrical power supply 86 disconnected.
  • the method 112f has a third phase 110f.
  • the third phase 110f comprises an eighth method step 88f.
  • a duration of the time intervals 18f, g is adjusted.
  • an average power 20f, g of the respective induction target 116f, g, 118f, g, 120f, g is adjusted.
  • the induction targets 116f, g, 118f, g, 120f, g in the low frequency group are operated at a common heating frequency.
  • the induction targets 116f, g, 118f, g, 120f, g in the high frequency group are operated at a common heating frequency.
  • the heating frequency of the low frequency group has a value smaller by at least 17 kHz than the heating frequency of the high frequency group.
  • Fig. 13b shows a process diagram of the method 112h for operating the flexible cooktop apparatus 10h.
  • the method 112h has three phases 80h, 82h, 110h.
  • the method 112h has nine method steps 44h, 48h-58h, 88h, 92h.
  • the method 112h differs from the method 112f by a
  • the third phase 110f of the method 112f is identical to the third phase 110h of the method 112h.
  • the second phase 82h comprises a seventh process step 58h. If induction targets 12h, which according to activation sequence 138h are intended for this, are included
  • a phase shift of voltages to electrical supplies of the respective stacked inductors 96h, 98h is varied.
  • the second phase 82h comprises an eighth method step 88h. If induction targets 12h, which according to activation sequence 138h are intended for this, are included
  • these induction targets 12h are disconnected from the electrical power supply 86 in the eighth process step 88h of the ith repeat.
  • the induction targets 12h in the low frequency group are operated at a common heating frequency.
  • the induction targets 12h in the high frequency group are operated at a common heating frequency.
  • the heating frequency of the low frequency group has a value smaller by at least 17 kHz than the heating frequency of
  • FIG. 14 shows an exemplary representation of a possible activation sequence 138g of the three induction targets 116g, 118g, 120g according to the method 12f for operating the first embodiment of the flexible cooktop apparatus 10f with the second occupancy.
  • the number of induction targets 116g, 118g, 120g is identical to the number of time intervals 18g.
  • the activation sequence 138g has three time intervals 18g ti, t 2, tz.
  • the duration of the time intervals 18g, ti , t 2 tz can be adjusted by the control unit 14.
  • the half-bridge inverter 134g supplies the two inductors 96g, 98g of the first, second and third induction targets 1 16g, 118g, 120g with voltages of the same amplitude.
  • the voltages of the respective inductor pair 128g, 130g, 132g are phase shifted from each other.
  • Both inductors of the respective inductor pair 128g, 130g, 132g are each supplied with a same heating frequency.
  • the heating frequency of the first induction target 1 16g is smaller than the heating frequency of the second and the third induction target 1 18g, 120g.
  • a frequency difference between the heating frequency of the first induction target 1 16g and the Heating frequency of the second to third induction target 118g, 120g is at least 17 kHz.
  • the respective inductor pairs have a phase shift between the voltages which operate individual inductors of an inductor pair 128g, 130g, 132g.
  • Each time interval 18g, ti , t 2, tz has exactly one power surplus 22g.
  • time intervals 18g t 2, tz are based on the same principles as the first time interval 18g ti.
  • Figure 14 right shows a second possible activation sequence 138g of the first one
  • Hob device 10f has three induction targets 116g, 118g, 120g.
  • the first induction target 116g includes a first inductor 96g of the fourth inductor pair 94g.
  • the second induction target 118g includes a second inductor 98g of the fourth
  • the fourth inductor pair 94g is shared between the first and second induction targets 116g, 118g.
  • the first inductor 96g and the second inductor 98g of the fourth inductor pair 94g can not be operated simultaneously.
  • the third induction target 120g includes a second inductor pair 130g.
  • the first pair of inductors 128g is not occupied and forms no induction target.
  • the first induction target 116g is activated.
  • Induction target 116g includes the first inductor 96g of the fourth inductor pair 94g.
  • the second inductor 98g of the fourth inductor pair 94g is disconnected from the electrical power supply 86.
  • the third inductor pair 132g of the second induction target 118g is activated.
  • the individual inductors of the second induction target 118g are operated with phase-shifted voltages.
  • the second pair of inductors 130g of the third induction target 120g is activated.
  • the first pair of inductors 128g is not occupied and forms no
  • the first induction target 116g is deactivated.
  • the second induction target 118g includes the activated third inductor pair 132g and the activated second inductor 98g of the fourth inductor pair 94g.
  • the third Time interval tz 18g only the first inductor 96g of the fourth inductor pair 94g of the first induction target 116g is activated.
  • the second inductor 98g of the fourth inductor pair 94g of the second induction target 118g is deactivated.
  • the third induction target 120g comprises an activated second inductor pair 130g in all three time intervals ti , t 2, tz 18g.
  • the heating frequencies of the second and third induction targets 118g, 120g are the same.
  • the heating frequency of the first induction target 116g is smaller than the heating frequency of the second and third induction targets 118g, 120g, and is at least 17 kHz lower.
  • the second and third induction targets 118g, 120g have the phase-shifted voltages in all time intervals ti , t 2, tz 18g, respectively.
  • FIG. 15 shows an exemplary representation of a possible activation sequence 138h of the four induction targets 12h according to the method 112h for operating the second embodiment of the flexible cooktop apparatus 10h.
  • Activation sequence 138h each with a power deficit 24h in each time interval ti , t 2, t3 , U 18h conceivable.
  • the third and fourth induction targets 120h, 100h are with others
  • phase-shifted voltages and operated with a further equal heating frequency is at least 17 kHz higher than the
  • Heating frequency of the first and second induction target 116h, 118h is Heating frequency of the first and second induction target 116h, 118h.
  • the heating frequency of the third to fourth induction targets 120h, 100h is at least 17 kHz lower than the heating frequency of the first and second induction targets 116h, 118h.
  • the fourth time interval t 4 18h is based on the same principles as the third time interval k 18h.
  • Fig. 15 right shows another alternative activation sequence 138h each with a power surplus 22h in each time interval ti , t 2, t ⁇ , U 18h. reference numeral

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  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Engineering & Computer Science (AREA)
  • Power Engineering (AREA)
  • General Physics & Mathematics (AREA)
  • Radar, Positioning & Navigation (AREA)
  • Automation & Control Theory (AREA)
  • Induction Heating Cooking Devices (AREA)

Abstract

L'invention concerne un dispositif de table de cuisson (10), en particulier d'un dispositif de table de cuisson à induction, comportant au moins trois cibles à induction (12) qui doivent fonctionner au moins simultanément, et comportant une unité de commande (14) pour l'alimentation répétitive des cibles à induction (12) avec une puissance électrique moyenne (20) respective par période de fonctionnement (16) à deux intervalles de temps (18) au moins. Afin d'améliorer le dispositif en termes de contrôle simple des performances, l'unité de commande (14) est destinée pour faire fonctionner les cibles d'induction (12) dans chaque intervalle de temps (18) de la période de fonctionnement (16) avec au moins un surplus de puissance (22) par rapport à la puissance moyenne respective (20) et avec au moins un déficit de puissance (24) par rapport à la puissance électrique moyenne respective (20) au moins pour réduire les signaux parasites intermodulation, dans lequel un nombre égal de cibles d'induction (12) présente un surplus de puissance (22) ou un déficit de puissance (24) dans chaque intervalle de temps (18).
PCT/IB2018/059322 2018-01-08 2018-11-27 Système de table de cuisson Ceased WO2019135118A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112018006788.2T DE112018006788A5 (de) 2018-01-08 2018-11-27 Kochfeldvorrichtung

Applications Claiming Priority (2)

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ES201830019A ES2720746A1 (es) 2018-01-08 2018-01-08 Dispositivo de campo de coccion
ESP201830019 2018-01-08

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230189405A1 (en) * 2021-12-10 2023-06-15 Sabaf S.P.A. Induction Cooktop and Method for Controlling an Induction Cooktop

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EP1951003A1 (fr) * 2007-01-23 2008-07-30 Whirlpool Corporation Procédé de commande d'induction d'une plaque de cuisson et d'induction d'une plaque de cuisson adaptée à un tel procédé
EP2731402A1 (fr) * 2012-11-09 2014-05-14 Electrolux Home Products Corporation N.V. Procédé permettant de commander une plaque de cuisson à induction avec plusieurs bobines d'induction et plaque de cuisson à induction
EP2911472A2 (fr) * 2013-12-20 2015-08-26 BSH Hausgeräte GmbH Dispositif d'appareil de cuisson, en particulier dispositif de plaque de cuisson, doté d'une pluralité d'onduleurs
EP2945461A1 (fr) * 2014-03-24 2015-11-18 BSH Hausgeräte GmbH Dispositif d'appareil de cuisson

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Publication number Priority date Publication date Assignee Title
DE102008042512A1 (de) * 2008-09-30 2010-04-01 BSH Bosch und Siemens Hausgeräte GmbH Kochfeld und Verfahren zum Betreiben eines Kochfelds
ES2392223B1 (es) * 2010-12-27 2013-10-09 BSH Electrodomésticos España S.A. Dispositivo de aparato de cocción y procedimiento para dicho dispositivo.

Patent Citations (4)

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Publication number Priority date Publication date Assignee Title
EP1951003A1 (fr) * 2007-01-23 2008-07-30 Whirlpool Corporation Procédé de commande d'induction d'une plaque de cuisson et d'induction d'une plaque de cuisson adaptée à un tel procédé
EP2731402A1 (fr) * 2012-11-09 2014-05-14 Electrolux Home Products Corporation N.V. Procédé permettant de commander une plaque de cuisson à induction avec plusieurs bobines d'induction et plaque de cuisson à induction
EP2911472A2 (fr) * 2013-12-20 2015-08-26 BSH Hausgeräte GmbH Dispositif d'appareil de cuisson, en particulier dispositif de plaque de cuisson, doté d'une pluralité d'onduleurs
EP2945461A1 (fr) * 2014-03-24 2015-11-18 BSH Hausgeräte GmbH Dispositif d'appareil de cuisson

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230189405A1 (en) * 2021-12-10 2023-06-15 Sabaf S.P.A. Induction Cooktop and Method for Controlling an Induction Cooktop

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