• 专利附录
  • 专利说明
  • 权利要求
  • 类似技术
  • 同族专利
  • 引用文献
  • 法律状态
  • 优先权
    • 专利摘要:
    The invention relates to a cooking appliance device, in particular, to a cooking field device, with at least one heating device (10a-d) comprising at least one heating unit (12a), at least one resonant capacity (16a-d) associated with the heating unit (12a), and at least one inverter (18a) which is provided to supply at least one heating current (i0). In order to improve its efficiency, it is proposed that the cooking appliance device comprises at least one measuring device (20a-d) which is designed to detect the capacity voltage in at least one operating state (vc) of the resonant capacitance (16a-d) in order to determine the heating current (i0), and to supply a measurement signal (S) correlated to the current of heating (i0) by means of the capacity voltage (vc). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2673100A1
    申请号:ES201631581
    申请日:2016-12-13
    公开日:2018-06-19
    发明作者:Pablo Jesus Hernandez Blasco；Ignacio Lope Moratilla；Oscar Lucia Gil；Hector Sarnago Andia
    申请人:BSH Hausgeraete GmbH；BSH Electrodomesticos Espana SA；
    IPC主号:
    专利说明:

    The invention refers to a cooking appliance device according to the preamble of claim 1 and a method for putting into operation a cooking appliance device according to claim 14.
    From the prior art, for example, cooking device devices made as induction cooking fields comprising a heating device with at least one inductor, at least one resonant capacity associated with the inductor, and At least one investor. To detect the heating current, current transformers and / or measuring resistors are generally used here.
    The invention solves the technical problem of providing a generic cooking appliance device with better properties in terms of its efficiency. According to the invention, this technical problem is solved by the features of claim 1 and the features of claim 14, while advantageous embodiments and improvements of the invention can be extracted from the secondary claims.
    The invention refers to a cooking appliance device, in particular, to a cooking field device and, advantageously, to an induction cooking device, with at least one heating device comprising at least one heating unit, at least one resonant capacity associated with the heating unit, and at least one inverter that is intended to supply at least one heating current, where the cooking appliance device comprises at least one measuring device that is provided to detect the capacity voltage of the resonant capacity in at least one operating state in order to determine the heating current, and to supply a correlative measurement signal to the heating current by means of the capacity voltage in order to evaluate and / or directly monitor the heating current. The term “planned” includes the concept of programmed, conceived and / or provided specifically. The expression that an object is intended for a particular function includes the concept


    relating to the object satisfying and / or performing this function determined in one or more application and / or operating states.
    The term "cooking device" includes the concept of at least one part, namely, a construction subgroup, of a cooking device, in particular, of a cooking oven and / or, advantageously, of a field Cooking The cooking apparatus is here advantageously carried out as an induction cooking device, in particular, as an induction cooking oven and / or, advantageously, as an induction cooking field. The term "heating device" includes the concept of a circuit and / or a unit that are intended to heat at least one cooking product and / or a cooking battery and / or to supply a heating power to heat at least one cooking product and / or a cooking battery. The heating unit here has a heating element, preferably made as an inductor, and is advantageously provided for heating the cooking product and / or the cooking battery by means of eddy currents and / or magnetic inversion. The heating unit may also comprise more, in particular, at least two, at least three and / or at least four heating elements and / or at least one connection arrangement for connecting, disconnecting and / or switching the heating elements. The inverter is intended to supply and / or generate the heating current, in particular, an oscillating electric current, preferably, with a switching frequency of at least 1 kHz, advantageously, at least 10 kHz and, of particularly advantageous way, of a minimum of 20 kHz and / or of a maximum of 160 kHz, advantageously, of a maximum of 120 kHz and, particularly advantageously, of a maximum of 80 kHz, to put the heating unit into operation. The resonant capacity is advantageously realized as a resonant capacitor and, in at least one operating state, forms with the heating unit at least a part of an oscillating electrical circuit and / or, preferably, an oscillating electrical circuit. Here, the resonant capacity has the capacity voltage in at least one operating state and / or is intended to supply the capacity voltage. The term "capacity voltage" includes the concept of the voltage stored in a capacity, in particular, in the resonant capacity and / or of the voltage that descends through the capacity, in particular, of the resonant capacity. The capacity voltage may correspond here with the voltage between two defined potential values and / or with the voltage between a defined potential value and a ground potential, preferably grounded. The expression that “an object is associated with another object” includes the concept


    relative to the fact that, in at least one operating state, there is at least one electrically conductive connection, preferably direct, between the object and the other object.
    The term "measuring device" includes the concept of a circuit and / or a unit in effect connection with the heating device and, advantageously, with the resonant capacity, which is at least provided for. to generate and / or supply using the capacity voltage a measurement signal correlative to the heating current, at least in order to determine at least the value of the heating current and / or, advantageously, to determine the evolution Temporary heating current. Advantageously, the measuring device is here electrically connected with the heating device. The expression "measurement signal correlative to the heating current" includes the concept relating to a measurement signal, in particular, a current signal and / or, advantageously, a voltage signal, by which one can determine at least the value of the heating current and / or, advantageously, the temporal evolution of the heating current and / or which directly, advantageously reproduce, at least the value of the heating current and / or , advantageously, the temporal evolution of the heating current. The measurement signal can also correspond here to the heating current. Also, the cooking device device may comprise at least one other unit, in particular at least one detection unit, at least one evaluation unit and / or, advantageously, a calculation unit, which may be provided to the less to detect, to process, to continue processing and / or to evaluate the measurement signal. The term "calculation unit" includes the concept of an electrical and / or electronic unit that presents an information input, an information processing, and an information output. Advantageously, the calculation unit also has a processor, at least one memory, at least one input and output means, at least one operating program, at least one regulatory routine, at least one control routine and / or at Less a calculation routine. Preferably, the calculation unit can deduce at least the value of the heating current and / or, advantageously, the temporal evolution of the heating current, at least by means of the measuring signal and / or can determine , advantageously directly, at least the value of the heating current and / or, advantageously, the temporal evolution of the heating current. Likewise, the calculation unit may be provided to determine by means of the measuring signal other variables of the cooking appliance device, for example, the power emission of the heating unit. In addition, the calculation unit is preferably intended to direct and / or regulate the operation.


    of the cooking appliance device, in particular, of the inverter. By this embodiment, a cooking appliance device with better properties can be provided in terms of its efficiency, in particular, its temporal efficiency, its efficiency relative to measurement, its efficiency relative to power, the efficiency relative to its components, the efficiency relative to its construction space and / or its cost efficiency. Likewise, the accuracy of the measurement can be improved thanks to the use of a resonant capacity with a precise value of the capacity and / or thanks to the advantageously simple calibration of the resonant capacity. In addition, it is possible to dispense with additional components such as, for example, voltage and / or current measurement units, so that it can be advantageously saved in construction space and / or reduced costs. In addition, the control algorithm of the cooking appliance device can be simplified and / or the safety of operation improved.
    Preferably, the measurement signal is a signal from the voltage correlative to the heating current, whereby a measurement and / or continuation of the advantageously simple measurement signal is achieved.
    If the measurement signal is proportional to the heating current, in particular, to the progression of the heating current, the heating current can be evaluated advantageously directly and / or easily, advantageously dispensing with the use of calculation algorithms complicated
    In addition, it is proposed that the measuring device comprises an actuation stage that is intended to transform, in particular, reconform and / or adapt, at least partially, the capacity voltage, in order to generate the measurement signal. In this way, the heating current can be determined advantageously directly.
    The drive stage could be connected to the resonant capacity, for example, without contact and / or it could be connected in series with the resonant capacity and could thus be, for example, integrated in a circuit of the heating device. However, it is advantageously proposed that the drive stage be connected at least partially in parallel to the resonant capacity, so that an advantageously safe operating measurement can be achieved, since the intensity of the operating current in the device of measurement and / or at least in the actuation stage is advantageously reduced at least compared to the intensity of the current in the heating device.


    In a particularly preferred embodiment of the invention, it is proposed that the drive stage be performed as a differentiator, and that the measurement signal corresponds to the temporal derivative of the capacity voltage, generated by the drive stage. In this way, the heating current can be determined particularly economically and / or easily with the use of the capacity voltage of the resonant capacity.
    The drive stage can be actively performed and comprise at least one operational amplifier. However, it is preferably proposed that the drive stage be carried out passively. The term "active object" includes the concept of an object that is intended to be actively directed and / or activated and / or which requires at least one supply voltage for its operation. The term "passive object" includes the concept of an object that, during its operation and / or in a state of operation, does not present any possibility of activation or / or supply voltage. Thus, an efficient drive stage can be provided. In addition, fatigue resistance and / or durability of the cooking appliance device can be advantageously increased.
    Also, the drive stage could be carried out, for example, as an inductive drive stage and / or comprise at least one inductance. However, it is preferably proposed that the drive stage be performed as a capacitive drive stage. Here, the drive stage comprises at least one transformer capacity and, advantageously, a transformer capacitor. Particularly preferably, the actuation stage is performed as an RC element (resistor-capacitor). In this way, the costs and / or the necessary construction space can be reduced.
    In another embodiment of the invention, it is proposed that the actuation stage defines the transformer limit frequency, which corresponds at least three times, advantageously, at least five times, preferably, with at least 10 times and, particularly preferably, with at least 20 times the switching frequency of the inverter, in particular, the switching frequency of the inverter mentioned above. The term "transformer limit frequency" includes the concept of a limit frequency of the drive stage, above which or below which the frequencies of the capacity voltage signals are blocked and / or at least partially weakened. and / or above which or below which the frequencies of the capacity voltage signals are exempt at least in part from


    a transformation effected by the drive stage. Thus, advantageously high measurement accuracy is achieved.
    An advantageous attenuation of the parasitic frequencies and / or of the signal noises can be achieved and, thus, an advantageously easy to process measurement signal, if the measuring device comprises at least one filtering unit, which is intended for at least partially reduce parasitic frequencies and / or signal noises. Preferably, the filtering unit is connected here in parallel to the drive stage, is pre-connected to the drive stage, and is intended to filter the capacity voltage. In this case, the filtering unit is advantageously arranged between the resonant capacity and the drive stage. Alternatively or additionally, the filtering unit may be connected after the drive stage, and may be provided to filter the measurement signal. In this case, the filtering unit is preferably arranged between the drive stage and another unit of the cooking appliance device, advantageously, the other unit mentioned above. Particularly preferably, the measuring device may comprise at least two filtering units.
    Likewise, it is proposed that the cooking appliance device comprises a decoupling unit, which is intended to galvanically separate the heating device and the measuring device from each other. The decoupling unit may be performed as any decoupling unit, for example, as an inductive decoupling unit, as an optical decoupling unit and / or as a capacitive decoupling unit. Advantageously, the decoupling unit comprises at least one decoupling capacity. The decoupling unit can also be performed as a decoupling capability. In this way, the provisions relating to safety and / or increasing operational safety can be complied with.
    In another preferred embodiment of the invention, it is proposed that the cooking appliance device comprises an adaptation unit, in particular an adaptation unit to the measuring range, which is intended to overlap the measurement signal with a signal of displacement, advantageously, a constant displacement voltage. The measuring device can comprise the adaptation unit here. Thus, an advantageous adaptation to the measuring range can be achieved.
    Likewise, a procedure is proposed for putting into operation a cooking device, which has at least one heating device that


    It comprises at least one heating unit, at least one resonant capacity associated with the heating unit, and at least one inverter that is intended to supply at least one heating current, where the voltage of at least one operating state is detected. capacity of the resonant capacity in order to determine the heating current by means of a measuring device, and a measurement signal correlative to the heating current is supplied by means of the capacity voltage in order to evaluate and / or advantageously monitor Directly the heating current. In this way, efficiency can be increased, in particular, temporal efficiency, efficiency relative to measurement, efficiency relative to power, efficiency relative to its components, efficiency relative to its construction space and / or cost efficiency In particular, the accuracy of the measurement can be improved thanks to the use of a resonant capacity with a precise value of the capacity and / or thanks to the advantageously simple calibration of the resonant capacity. In addition, it is possible to dispense with additional components such as, for example, voltage and / or current measurement units, so that it can be advantageously saved in construction space and / or reduced costs. In addition, the control algorithm of the cooking appliance device can be simplified and / or the safety of operation improved.
    The cooking appliance device and the procedure for putting into operation the cooking appliance device described are not limited to the application or the embodiment described above, in particular being able to present a number of elements, components, and particular units that differ from the amount mentioned in this document, as long as the purpose of fulfilling the functionality described here is pursued.
    Other advantages are taken from the following description of the drawing. Examples of embodiment of the invention are shown in the drawing. The drawing, description and claims contain numerous features in combination. The person skilled in the art will consider the characteristics advantageously also separately, and will gather them in other reasonable combinations.
    They show:
    Fig. 1 a cooking appliance made by way of example as a cooking field
    by induction with a cooking appliance device, in top view
    schematic,
    Fig 2 a simplified connection scheme of the cooking appliance device,


    Fig. 3 a schematic graph of some signals of the device device
    cooking,
    Fig. 4 another schematic graph of some signals of the device device
    cooking,
    Fig. 5 a simplified connection scheme of another device device
    cooking,
    Fig. 6 a simplified connection scheme of another device device
    cooking, and
    Fig. 7 a simplified connection scheme of another device device
    cooking.
    Fig. 1 shows a cooking apparatus 32a made by way of example as a cooking field, in the present case, as an induction cooking field, in schematic top view. The cooking apparatus 32a is intended to heat at least one cooking product and / or a cooking battery (not shown). However, the cooking apparatus could also be made in principle as a cooking oven and, preferably, as an induction cooking oven.
    The cooking appliance 32a comprises a cooking appliance device. The cooking device has a control unit 34a. The control unit 34a serves for the user to enter and / or select different parameters such as, for example, the degree of power. To direct its operation, the cooking apparatus device further comprises a calculation unit 36a. The calculation unit 36a has a processor, a memory, and an operating program stored in the memory, which is intended to be executed by the processor.
    Figure 2 shows a wiring diagram of the cooking appliance device. The cooking appliance device comprises a source of energy 38a. In the present case, the power source 38a is made, by way of example, as a connection to the network. In addition, the cooking appliance device comprises a grinding unit (not shown). The rectifier unit is intended to rectify the mains voltage of the power source 38a and to be supplied to an energy storage unit 40a of the cooking device. As an alternative, the use of a power source, specifically a voltage source, other than a network connection is conceived. Also, when a DC voltage source is used, an additional rectifier unit could also be dispensed with.


    Also, the cooking appliance device comprises a heating device 10a. The heating device 10a is in effect connection with the power source 38a and is intended to supply in at least one operating state a heating power to heat the cooking product and / or the cooking battery.
    The heating device 10a has a heating unit 12a. In the present case, the heating unit 12a comprises, by way of example, exactly one heating element. The heating element is made as an inductor. In the present case, the heating unit 12a is associated with at least one heating zone and is intended to directly heat the cooking product and / or the cooking battery by effects of eddy currents and / or magnetic inversion. Alternatively, it is conceived that a heating unit comprises several heating elements, advantageously realized as inductors and / or a connection arrangement for switching between the heating elements. In addition, at least one heating element of a heating unit and / or all heating elements of a heating unit could also be made as a heating resistor.
    In addition, the heating device 10a comprises an inverter 18a. The inverter 18a comprises two inverter switches 42a, 44a. The inverter switches 42a, 44a are identical to each other and are made as bidirectional unipolar semiconductor switches. Each of the inverter switches 42a, 44a comprises in this case an inverter connection element made as IGBT (Insulated-Gate Bipolar Transistor). Each of the inverter switches 42a, 44a is electrically conductively connected to a central socket 46a of the inverter 18a. The inverter 18a is intended to transform the pulsed rectified mains voltage of the energy storage unit 40a into a high-frequency heating current i0, supply it in the central socket 46a, and supply it in particular to the heating unit 12a. In the present case, the switching frequency of the inverter 18a is between 10 kHz and 100 kHz and, advantageously, between 20 kHz and 80 kHz. Alternatively, it is also conceived that the inverter switches are configured differently and / or use a diode and / or a storage capacity connected in parallel to an inverter connection element. Also, at least one inverter switch could also comprise an inverter connection element made as a transistor, FET (Field-Effect Transistor) and / or MOSFET (Metal-Oxide Semiconductor Field-Effect Transistor).


    Also, the heating device 10a comprises at least one resonant capacity 14a, 16a. In the present case, the cooking apparatus device comprises, for example, two resonant capacities 14a, 16a, in particular, a first resonant capacity 14a and a second resonant capacity 16a, where each of the resonant capacities 14a, 16a interacts with at least one of the inverter switches 42a, 44a. The resonant capacities 14a, 16a are made with the same construction and as capacitors. In the present case, the resonant capacities 14a, 16a have in each case a capacity with a value of 520 nF. Also, the resonant capacities 14a, 16a are associated with the heating unit 12a and are connected to it. The term "connected" includes the concept of directly connected electrically conductively. Therefore, the resonant capacities 14a, 16a are in each case a constituent part of an oscillating electrical circuit and can be charged through the inverter 18a. However, a heating device could also present in principle exactly a resonant capacity. In addition, it is conceived that the resonant capacities are configured differently from each other.
    In the present case, the first terminal of the inverter 18a is connected with the first terminal of the energy storage unit 40a and with the first terminal of the first resonant capacity 14a. The second terminal of the inverter 18a is connected with the second terminal of the energy storage unit 40a and with the second terminal of the second resonant capacity 16a. The central socket 46a of the inverter 18a is connected to the first terminal of the heating unit 12a. The second terminal of the heating unit 12a is connected with the second terminal of the first resonant capacity 14a and with the first terminal of the second resonant capacity 16a. Also, the second terminal of the first resonant capacity 14a is connected to the first terminal of the second resonant capacity 16a. Therefore, the heating unit 12a is arranged in the bridge branch between the central socket 46a and the resonant capacities 14a, 16a. In the present case, the heating unit 12a is actuated in a half bridge connection. As an alternative, it is conceived that a heating unit is operated on a complete bridge connection.
    Also, the cooking appliance device comprises a measuring device 20a. The measuring device 20a is in effect connection with the heating device 10a, in the present case, with the second resonant capacity 16a in particular. In this case, the measuring device 20a is connected to the heating device 10a, with the second resonant capacity 16a in particular. In addition, the


    measuring device 20a is in effect connection with the calculation unit 36a. In the present case, the measuring device 20a is connected to the calculation unit 36a.
    The measuring device 20a is provided to determine the heating current i0, in this case, the temporary progression of the heating current i0. For this purpose, the measuring device 20a is provided to detect the capacity voltage vc of the second resonant capacity 16a in at least one operating state, and to supply a measuring signal S corresponding to the heating current i0 by means of the capacity voltage vc of the second resonant capacity 16a. The measurement signal S is here a signal of the voltage correlative to the heating current i0 and, in the present case, is proportional to the heating current i0. To process and / or continue processing the measurement signal S, the calculation unit 36a may further comprise, for example, an analog-to-digital converter connected behind the measuring device 20a. Alternatively, the measuring device could also, however, be connected with another unit of the cooking appliance device that differs from a calculation unit, for example, with a detection unit, with a measurement unit and / or with An evaluation unit. In addition, the measuring device could also be connected additionally or alternatively with a first resonant capacity. Also, a measurement signal from a measuring device could also correspond to a current signal. On the other hand, the cooking appliance device could in principle comprise, in addition to a measuring device, other measuring units, in particular, voltage and / or current measuring units, in order to increase safety of operation However, it is preferred that the cooking device does not have other measuring units.
    For the generation of the measuring signal S from the capacity voltage vc of the second resonant capacity 16a, the measuring device 20a comprises an actuation stage 22a. The drive stage 22a is connected in parallel to the second resonant capacity 16a. In the present case, the drive stage 22a directly follows the second resonant capacity 16a, such that no other components are arranged between the drive stage 22a and the second resonant capacity 16a. The drive stage 22a is performed as a differentiator. In the present case, the drive stage 22a is also carried out passively and has no active components. In addition, the drive stage 22a is carried out as a capacitive drive stage, configured as an RC element, and is intended to at least partially transform the capacity voltage vc of the second resonant capacity 16a.


    For this, the actuation stage 22a comprises at least one transformer capacity 48a. In the present case, the drive stage 22a comprises exactly a transforming capacity 48a. The transforming capacity 48a is realized as a capacitor and has a capacity with a value between 10 nF and 0.1 pF and, advantageously, between 1 nF and 1 pF, in the present case, for example 33 pF.
    In addition, the actuation stage 22a comprises at least one transformer resistor 50a. In the present case, the actuation stage 22a comprises exactly a transformer resistor 50a. The transformer resistor 50a corresponds to a measuring resistor and is connected in parallel to the second resonant capacity 16a. In the present case, the voltage that drops through the transformer resistor 50a corresponds to the measurement signal S. The transformer resistor 50a has a resistance with a value between 100 kΩ and 10 Ω and, advantageously, between 10 kΩ and 100 Ω. In the present case, the transformer resistor 50a has, by way of example, a resistance with a value of 1.6 kΩ.
    Also, the first terminal of the transformer capacity 48a is connected to the second terminal of the first resonant capacity 14a and to the second terminal of the heating unit 12a. In addition, the second terminal of the transformer capacity 48a is connected to the first terminal of the second resonant capacity 16a, to the first terminal of the transformer resistor 50a, and to the first terminal of the calculation unit 36a. Also, the second terminal of the transformer resistor 50a is connected with the second terminal of the second resonant capacity 16a and with the second terminal of the calculation unit 36a. Alternatively, the drive stage could also comprise various transformer capacities and / or transformer resistors. In addition, a drive stage could also be actively performed and comprise, for example, at least one operational amplifier. Likewise, the actuation stage could also in principle comprise at least one additional inductance.
    In order to generate the measuring signal S, the actuation stage 22a is provided in the present case to derive in time the capacity voltage vc of the second resonant capacity 16a. It is applicable:
    i0 = C2d / dt (vc) (1)
    Here, C2 corresponds to the capacity value of the second resonant capacity 16a.


    In addition, the drive stage 22a defines the transformer limit frequency fc, which corresponds to at least 20 times the switching frequency of the inverter 18a. It is applicable:
    fc = 1 / (2 · Rd · Cd) (2)
    Here, Rd corresponds to the value of the resistance of the transformer resistor 50a and Cd corresponds to the value of the capacity of the transformer capacity 48a. Preferably, the transformer limit frequency fc is chosen here so that at least the first five harmonics of the switching frequency of the inverter 18a can be detected.
    Figure 3 shows by way of example a graph of some signals of the cooking appliance device. The ordinate axis 52a is made as the magnitude axis, and on it the measurement signal S and the capacity voltage vc of the second resonant capacity 16a in volts are represented. On the axis of abscissa 54a the time in milliseconds is represented. Curve 56a illustrates the temporal progression of the measurement signal
    S. Curve 58a illustrates the temporal progression of the capacity voltage vc of the second resonant capacity 16a. The measurement signal S here presents a lag relative to the capacity voltage vc of the second resonant capacity 16a as a result of the temporal derivative.
    Figure 4 shows by way of example another graph of some signals of the cooking appliance device. In the present case, Figure 4 shows the evolution of the measurement signal S compared to the evolution of the heating current i0. The ordinate axis 60a is represented as the magnitude axis. On the axis of abscissa 62a the time in milliseconds is represented. Curve 56a again illustrates the temporal progression of the measuring signal S. Curve 64a illustrates the temporal progression of the heating current i0. Therefore, the measurement signal S directly reproduces the evolution of the heating current i0.
    Other embodiments of the invention are shown in Figures 5 to 7. The following descriptions and drawings are essentially limited to the differences between the embodiments, where, in relation to components indicated in the same way, in particular, in terms of components with the same reference symbols, it can also be basically referred to drawings and / or the description of the embodiment example of figures 1 to 4. For the differentiation of the exemplary embodiments, the letter "a" is postponed to the reference symbols of the embodiment example of figures 1 to 4. In


    In the embodiments of Figures 5 to 7, the letter "a" has been replaced by the letters "b" to "d".
    In Figure 5, another embodiment of the invention is shown. The letter "b" is postponed to the reference symbols of the embodiment example of Figure 5. The other embodiment example of Figure 5 differs from the previous embodiment example at least basically in the embodiment of the measuring device 20b.
    In this case, the measuring device 20b comprises at least one filter unit 24b, 26, in the present case, two filter units 24b, 26b. The filtering units 24b, 26b are made at least essentially with the same construction. Specifically, the filtering units 24b, 26b are passively performed and have no active components. Likewise, the filtering units 24b, 26b are made as a low pass filter, are connected in parallel with each other and in parallel with respect to the drive stage 22b and the second resonant capacity 16b.
    The first filter unit 24b of the filter units 24b, 26b is preconnected to the drive stage 22b. Here, the first filter unit 24b is disposed between the second resonant capacity 16b and the drive stage 22b. The first filtering unit 24b is provided to filter the capacity voltage vc of the second resonant capacity 16b. For this, the first filtering unit 24b comprises a first filtering resistor 66b and a first filtering capacity 68b, arranged in parallel to the second resonant capacity 16b.
    The second filter unit 26b of the filter units 24b, 26b is connected after the drive stage 22b. Here, the second filter unit 26b is disposed between the drive stage 22b and another unit of the cooking appliance device. The second filter unit 26b is provided to filter a measurement signal S generated by the drive stage 22b. For this, the second filtering unit 26b comprises a second filtering resistor 70b and a second filtering capacity 72b, arranged in parallel to the second resonant capacity 16b. Alternatively, the measuring device could, however, also have exactly one filter unit, in particular, a first filter unit or a second filter unit, and / or have at least three filter units. It is also conceived that at least one filter unit is configured as a bandpass filter.
    In Figure 6, another embodiment of the invention is shown. The letter "c" is postponed to the reference symbols of the exemplary embodiment of Figure 6.


    In this case, the cooking appliance device further comprises a decoupling unit 28c. The decoupling unit 28c is made as a capacitive decoupling unit and is intended to galvanically separate the heating device 10c and the measuring device 20c from each other.
    5 For this, the decoupling unit 28c comprises at least one decoupling capacity 74c, in the present case, exactly one decoupling capacity 74c. The decoupling capacity 74c is realized as a decoupling capacitor and is connected in parallel to the transformer capacity 48c of the actuation stage 22c. The first terminal of decoupling capacity 74c
    10 is connected to the second terminal of the second resonant capacity 16c and to the second terminal of the transformer resistor 50c of the drive stage 22c.
    It is also conceived to combine at least two and, advantageously, all the exemplary embodiments set forth in a cooking device.
    In Figure 7, another embodiment of the invention is shown. The letter "d" appears 15 postponed to the reference symbols of the exemplary embodiment of Figure 7.
    In this case, the cooking appliance device further comprises an adaptation unit 30d. The adaptation unit 30d is made as an adaptation unit to the measurement range, and is intended to overlap a measurement signal S, generated by the actuation stage 22d, with a displacement signal, in the present case, with
    20 a constant displacement voltage.
    For this, the adaptation unit 30d comprises at least one adaptation resistor 76d. In the present case, the adaptation unit 30d comprises exactly one adaptation resistor 76d. The adaptation resistor 76d is here connected in series to a transformer resistor 50d of the drive stage 22d. Alternatively, a resistor of
    The adaptation could, however, also be carried out as a variable adaptation resistor, for example, as a potentiometer.
    It is also conceived to combine at least two, preferably at least three and, advantageously, all the exemplary embodiments set forth in a cooking appliance.


    Reference symbols
    Heating device
    12 Heating unit
    14 Resonant capacity
    16 Resonant capacity
    18 Investor
    Measuring device
    22 Drive stage
    24 Filtering unit
    26 Filtering unit
    28 Decoupling unit
    Adaptation unit
    32 Cooking appliance
    3. 4 Control unit
    36 Unit of calculation
    38 Power source
    Power storage unit
    42 Inverter switch
    44 Inverter switch
    46 Central socket
    48 Transforming capacity
    Transformer resistor
    52 Edge of ordered
    54 Abscissa shaft
    56 Curve
    58 Curve
    Edge of ordered
    62 Abscissa shaft
    64 Curve
    66 Filtering resistor
    68 Filtering capacity
    Filtering resistor
    72 Filtering capacity
    74 Decoupling capacity
    76 Adaptation resistor

    i0 Heating current
    S Measurement signal
    vc Capacity voltage

    权利要求:
    Claims (8)
    [1]
    1. Cooking appliance device, in particular, cooking range device, with at least one heating device (10a-d) comprising at least one heating unit (12a), at least one resonant capacity (16a-d ) associated
    5 to the heating unit (12a), and at least one inverter (18a) that is providedto supply at least one heating current (i0), characterized by atless a measuring device (20a-d) that is intended to detect in theminus one operating state the capacity voltage (vc) of the capacityresonant (16a-d) in order to determine the heating current (i0), and for
    10 supply a measurement signal (S) correlative to the heating current (i0) by means of the capacity voltage (vc).
    [2]
    2. Cooking device according to claim 1, characterized in that the
    Measuring signal (S) is a signal from the voltage correlative to the 15 heating current (i0).
    [3]
    3. Cooking device according to claims 1 or 2, characterized in that the measuring signal (S) is proportional to the heating current (i0).
    A cooking device according to one of the preceding claims, characterized in that the measuring device (20a-d) comprises an actuation stage (22a-d) which is intended to at least partially transform the capacity voltage ( vc).
    A cooking device according to claim 4, characterized in that the actuation stage (22a-d) is connected at least partially in parallel to the resonant capacity (16a-d).
    [6]
    6. Cooking device according to claims 4 or 5, characterized in that the actuation stage (22a-d) is carried out as a differentiator.
    [7]
    7. Cooking device according to one of claims 4 to 6, characterized in that the actuation stage (22a-d) is carried out passively.

    [8]
    A cooking device according to one of claims 4 to 7, characterized in that the actuation stage (22a-d) is carried out as a capacitive actuation stage.
    5. Cooking device according to one of claims 4 to 8,characterized in that the drive stage (22a-d) defines the limit frequencytransformer, which corresponds at least three times the frequency ofinverter switching (18a).
    10. Cooking device device according to one of the preceding claims, characterized in that the measuring device (20b) comprises at least one filtering unit (24b, 26b), which is intended to reduce at least partially the parasitic frequencies and / or signal noises.
    A cooking device according to one of the preceding claims, characterized by a decoupling unit (28c), which is intended to galvanically separate the heating device (10c) and the measuring device (20c) from each other. .
    A cooking device device according to one of the preceding claims, characterized by an adaptation unit (30d) which is intended to overlap the measurement signal (S) with a constant displacement signal.
    [13]
    13. Cooking appliance (32a) with at least one cooking appliance device according to one of the preceding claims.
    [14]
    14. Method for putting into operation a cooking device according to one of claims 1 to 12, which has at least one heating device (10a-d) comprising at least one cooking unit.
    30 heating (12a), at least one resonant capacity (16a-d) associated with the heating unit (12a), and at least one inverter (18a) that is intended to supply at least one heating current (i0), where the capacity voltage (vc) of the resonant capacity (16a-d) is detected in at least one operating state in order to determine the heating current (i0), and
    35 supplies a measurement signal (S) correlative to the heating current (i0) by means of the capacity voltage (vc).



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    同族专利:
    公开号 | 公开日
    ES2673100B1|2019-03-28|
    EP3337293A1|2018-06-20|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    US4820891A|1986-11-29|1989-04-11|Kabushiki Kaisha Toshiba|Induction heated cooking apparatus|
    GB2342723A|1998-10-15|2000-04-19|Edgcumbe Instr Limited|Electrical appliance testing apparatus|
    GB2530716A|2014-09-09|2016-04-06|Robert William Moore|Cascade circuit tester|
    EP2437573B1|2009-05-26|2015-11-11|Mitsubishi Electric Corporation|Induction heating method|
    ES2573144B1|2014-12-03|2017-03-16|Bsh Electrodomésticos España, S.A.|Induction cooking device with one or more resonant capacities|
    ES2583206B1|2015-03-18|2017-07-18|Bsh Electrodomésticos España, S.A.|INDUCTION COOKING DEVICE DEVICE WITH AN INVESTING UNIT AND COOKING DEVICE WITH SUCH DEVICE|
    法律状态:
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    优先权:
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    ES201631581A|ES2673100B1|2016-12-13|2016-12-13|Cooking appliance device and method for putting into operation a cooking appliance device|ES201631581A| ES2673100B1|2016-12-13|2016-12-13|Cooking appliance device and method for putting into operation a cooking appliance device|
    EP17203736.8A| EP3337293A1|2016-12-13|2017-11-27|Cooking appliance and method for operating a cooking appliance|
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