• 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 field device with one or more heating modules (10a; 10b), with one or more inverters (12a; 12b) comprising two or more inverter switches (14a, 16a; 14b, 16b) ), and are intended to supply at least one heating current (ior), with one or more resonant capacities (18a, 18b, 20b) assigned to the heating module (s) (10a; 10b), with one or more capacity voltage measuring units (22a; 22b) that are provided for measuring the capacity voltage (vc) of the resonant capacity (18a; 18b, 20b), and with at least one control unit (24a; 24b). In order to increase the efficiency of the cooking field device, it is proposed that the control unit (24a; 24b) be provided for determining in one or more operating states the power supplied (por ) of the heating module (10a; 10b) from the capacity voltage (vc). (Machine-translation by Google Translate, not legally binding)
    公开号:ES2573144A1
    申请号:ES201431791
    申请日:2014-12-03
    公开日:2016-06-06
    发明作者:José Miguel Burdio Pinilla；Pablo Jesús Hernández Blasco；Sergio Llorente Gil；Óscar Lucía Gil；Daniel Palacios Tomas；Héctor SARNAGO ANDÍA
    申请人:BSH Hausgeraete GmbH；BSH Electrodomesticos Espana SA；
    IPC主号:
    专利说明:

    image 1 INDUCTION COOKING FIELD DEVICE WITH ONE OR SEVERAL RESONANT CAPABILITIES DESCRIPTION
    The invention refers to an induction cooking field device with one or
    5 several heating modules, with one or more inverters comprising two or more inverter switches, and are intended to supply at least one heating current, with one or several resonant capacities assigned to the heating module or modules, with one or more capacity voltage measurement units that are intended to measure the capacity voltage of the resonant capacity, and with at least one
    10 control unit
    From the state of the art, induction cooking fields are known which comprise at least one inductor, at least one inverter for actuating the inductor, and a capacity voltage measurement unit, where the voltage measurement unit of capacity is planned to measure the capacity voltage of a resonant capacity.
    15 However, to determine the supplied power of the inductor, the output voltage and / or the output current of the inverter is evaluated.
    The invention solves the technical problem of providing a generic cooking field device with better properties in terms of its efficiency. According to the invention, this technical problem is solved by means of a cooking field device, in particular, an induction cooking field device, with one or several heating modules, with one or more inverters comprising two or more switches. of inverter, preferably connected in series and preferably identical to each other, which are periodically connected in an operating state, and are provided to provide at least one heating current, with one or more resonant capacities 25 assigned to the heating module or modules, with one or several, preferably exactly one, capacity voltage measurement units that are provided to measure the resonant capacity capacity voltage, and with at least one control unit, where the control unit is provided for determine in one or more operating states the power supplied from the heating module, 30 man exactly one heating element of the heating module was preferred, from the capacity voltage, and not from the operating voltage, in particular, the input and / or output voltage, of the inverter, and / or of the operating current, in particular, of the input and / or output current, of the inverter. The term "cooking field device" includes the concept of at least a part, in particular, a construction subgroup, of a cooking field, in particular, of an induction cooking field. The cooking field device may also comprise the entire cooking field, in particular, the entire induction cooking field. The heating module has a heating element here, preferably made as an inductor, and is intended to heat a cooking battery by means of eddy currents and / or magnetic inversion. However, the heating module may also comprise several, in particular, two or more, three or 10 more and / or four or more, heating elements and / or one or more connection arrangements for connecting, disconnecting and / or switching The heating elements. The inverter is intended to supply and / or generate an oscillating electric current, in particular, a heating current, preferably with a frequency of at least 1 kHz, more preferably, at least 10 kHz and, advantageously, of At least 20 kHz, to start the heating module. The term "inverter switch" includes the concept of a connection unit, preferably bidirectional and unipolar. The term "connection unit" includes the concept of a unit, preferably electronic, which comprises a connection element and, preferably, a diode connected in parallel to the connection element. In addition, the connection unit may have a capacity, in particular, an attenuating capacity, connected in parallel to the connection element and / or the diode. The connection element may be made as any connection element, preferably semiconductor connection element, that is appropriate to a person skilled in the art, for example, as a transistor, preferably as FET (field-effect transistor), as MOSFET (metal- oxide-semiconductor field-effect 25 transistor) and / or as IGBT (Insulated Gate Bipolar Transistor). 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 that the object satisfies and / or performs this particular function in one or more application and / or operating states. The resonant capacity is advantageously realized as a resonant capacitor, and is intended to form with the heating module in one or more operating states at least a part of an oscillating electrical circuit and / or, preferably, an oscillating electrical circuit. The resonant capacity has a capacity of at least 0.1 nF, preferably, at least 1 nF and, more preferably, at least 10 nF, and a maximum of 100 µF, preferably 35, at least 50 µF. maximum and, more preferably, 10 µF maximum. The expression that "an object is assigned to another object" includes the concept that, in one or more operating states, there is at least one electrically conductive connection, preferably directly, between the object and the other object. The term "control unit" includes the concept of an electrical and / or electronic unit that is intended to direct and / or regulate the operation of the cooking field device, specifically, of the inverter. Preferably, the control unit comprises a calculation unit and, in addition to the calculation unit, a storage unit with a control and / or regulation program stored therein, which is intended to be executed by the unit Calculation Likewise, the unit of measurement of the voltage of capacity can be realized like any unit of measurement of the electrical and / or electronic voltage, which is appropriate to a person skilled in the art. However, the capacity voltage measurement unit preferably comprises one
    image2
    image3
    or more voltage dividers and / or one or more analog-digital converters, and presents in one
    or more operating states at least one electrically conductive connection with the control unit and / or with an evaluation unit of the control unit. The term "capacity voltage" includes the concept of a voltage stored in a capacity, in particular, the resonant capacity, and / or of a voltage that descends through the capacity, in particular, of the resonant capacity. The capacity voltage can correspond here with a voltage between two defined potential values and / or with a voltage between a defined potential value and a ground potential, preferably grounded. The term "supplied power" includes the concept of a power, namely, heating power, of at least one heating element of the heating module, which is supplied in one or more operating states to a cooking battery supported on a cooking field plate of the cooking field device, and serves to heat the cooking battery. The term "determine" includes the
    25 concepts of reading and / or calculating.
    By means of this embodiment, a cooking field device can be provided with better properties in terms of its efficiency, in particular time efficiency, measurement efficiency and / or cost efficiency, and can be improved in Particularly the accuracy of the measurement using a resonant capacity 30 with a precise value of the capacity and / or thanks to an advantageously simple calibration of the resonant capacity. Likewise, it is possible to dispense with additional components, for example, voltage and / or current measurement units, which can be saved in construction space and / or in costs. Alternatively, when additional voltage and / or current measurement units are used, also in a state of malfunction, in particular, in a state of operation in which it fails and / or does not
    image4
    it is possible to determine by means of the capacity voltage the power supplied and / or other operating data, safe operation is guaranteed and, in particular, the safe determination of the power supplied and / or the operation data. In addition, a cooking field device control algorithm can be advantageously simplified.
    Likewise, it is proposed that the control unit be planned to evaluate and / or consider only the capacity voltage, in particular, values and, in particular, values of the voltage, of the capacity voltage, in order to determine the power supplied in one
    or more operating states. Specifically, the control unit is intended to evaluate only the values, in particular the measurement values, of the capacity voltage measurement unit, in order to determine the power supplied. In this way, it is possible to achieve a simple measurement and / or evaluation.
    If the capacity voltage measurement unit is intended to measure exactly two values, namely measurement values, of the capacity voltage for the duration of a connection period of at least one of the inverter switches, in two
    or more moments other than the duration of the connection period, the control algorithm can be advantageously simplified. The term "duration of the connection period" includes the concept of a periodic period of time in which each connection unit, in particular, each inverter switch, is exactly once in the closed and / or conductive state. The expression "for a period of time" includes the concept of simultaneously at the beginning and / or at the end of the period of time and / or at any time within the period of time.
    Preferably, the capacity voltage measurement unit is provided to measure exactly two values, namely voltage values, of the capacity voltage during a connection time of one of the inverter switches, in two or more moments than the connection time. The term "connection time" of an inverter switch includes the concept of a period of time in which the inverter switch is in a closed state and / or electrically conductive. The sum of the connection time of the inverter switch and a disconnection time of the same inverter switch corresponds to the duration of a period of connection of the inverter switch. The term "disconnection time" of an inverter switch includes the concept of a period of time in which the inverter switch is in an open state and / or not electrically conductive. Preferably, the sum of the connection times of the inverter switches corresponds roughly or exactly to the duration of a period of connection of the inverter switches. The expression “the sum of the connection times of the inverter switches” corresponds “approximately or exactly with the duration of a connection period” includes the concept that the divergence between the sum of the connection times of the switches of the inverter and the duration of the connection period corresponds to a maximum of 15%, preferably, a maximum of 10% and, more preferably, a maximum of 5%. In this way, the measurement efficiency can be further improved.
    image5
    In an embodiment of the invention, it is proposed that the capacity voltage measurement unit be provided to measure the value, in particular, value of the voltage, of the capacity voltage at the start of a connection time of one of inverter switches. The expression "at the beginning of a connection time" includes the concept of directly after the start of the connection time and / or, preferably, simultaneously at the beginning of the connection time. In this way, it is possible to achieve an advantageously simple and reproducible measurement.
    Preferably, the capacity voltage measurement unit is provided to measure the value, in particular, another value and, in particular, another value of the voltage, of the capacity voltage at the end of a connection time of one of inverter switches. The expression "at the end of a connection time" includes the concept of directly before the end of the connection time and / or simultaneously at the end of the connection time. Advantageously, the capacity voltage measurement unit is provided to measure in each case a value, in particular, value of the voltage, of the capacity voltage at the start of a connection time and at the end of the same time of connection of the same inverter switch. In this way, a control algorithm can be simplified to a greater extent.
    Likewise, it is proposed that the control unit be provided to evaluate two or more values, namely voltage values, of the capacity voltage in order to determine the power supplied. Specifically, the control unit is intended to evaluate at least the value, in particular, value of the voltage, of the capacity voltage, measured at the beginning of the connection time and at least the value, in particular, another value of the voltage, of the capacity voltage, measured at the end of the connection time, in order to determine the power supplied. In a particularly preferred manner, the control unit is intended to evaluate exactly two values, in particular, voltage values, of the capacity voltage for each duration of a connection period in order to determine the power supplied. In this way, an advantageously simple, accurate and reproducible measurement method can be provided.
    image6
    In a preferred embodiment of the invention, it is proposed that the control unit be provided to determine the average value of the capacity voltage from the capacity voltage. Specifically, the control unit is intended to evaluate only the capacity voltage to determine the average value of the capacity voltage. The term "average capacity voltage value" includes the concept of a medium capacity voltage over time that corresponds to the arithmetic average value of the capacity voltage in a defined time interval. In this way, the power supplied can be determined advantageously simply.
    Likewise, it is proposed that the control unit be provided to determine the average value of a rectified mains voltage from the capacity voltage. Specifically, the control unit is intended to evaluate only the capacity voltage to determine the average value of the rectified grid voltage. The term "rectified grid voltage" includes the concept of a grid voltage, in particular, bus voltage and / or voltage applied to the inverter, rectified, preferably by a rectifier unit of the cooking field device. The expression "mean value of the rectified network voltage" includes the concept of a mean rectified network voltage in time that corresponds to the arithmetic mean value of the rectified network voltage in a defined time interval. In this way, it is possible to dispense with additional voltage measurement units, thereby reducing costs.
    In addition, it is proposed that the control unit be provided to determine the average value of the capacity voltage and / or the average value of the rectified grid voltage from three
    or more values, in particular, values of the tension, of the capacity voltage. The unit of measurement of the voltage of capacity could be provided to measure three or more values, in particular, values of the voltage, of the voltage of capacity, at least three different moments of the duration of a period of connection, during the duration of a connection period and / or during a connection time of at least one of the inverter switches. Alternatively and / or additionally, the control unit could be provided to evaluate three or more values, namely voltage values, of the capacity voltage of at least two durations of a connection period, preferably directly consecutive. In this way, the operating data of the cooking field device can be advantageously determined simply without using additional measuring units.


    In addition, the invention relates to a method for putting into operation a cooking field device, in particular, an induction cooking device, with one or more heating modules, with one or more inverters comprising two or more inverter switches, and are intended to supply a heating current, with one or several resonant capacities assigned to the heating module (s), and with one or more units of capacity voltage measurement that are intended to measure the capacity voltage of the resonant capacity, where, in one or more operating states, the power supplied from the heating module is determined from the capacity voltage. In this way, efficiency can be improved, in particular, time efficiency, measurement efficiency and / or cost efficiency, increase measurement accuracy and / or simplify the control algorithm.
    The cooking field device described is not limited to the application or the embodiment described above, and may in particular have a number of elements, components, and particular units that differ from the amount mentioned herein. , as long as the purpose of fulfilling the functionality described here is pursued.
    Other advantages are taken from the following description of the drawing. Two embodiments of the invention are represented 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 field made as an induction cooking field
    with a cooking field device, in top view
    schematic,
    Fig. 2 a simplified wiring diagram of the field device
    cooking,
    Fig. 3 a schematic graph of several signals for the control of
    cooking field device, and
    Fig. 4 a simplified connection scheme of another field device
    Cooking


    Figure 1 shows an example of a cooking field 26a made as an induction cooking field, in schematic top view. In the present case, the cooking field 26a has a cooking field plate with four heating zones 28a, each of which is intended to heat exactly one cooking battery element (not shown).
    Also, the cooking field 26a comprises a cooking field device, which has a control unit 30a which serves for the user to enter and / or select different parameters, for example, the degree of power. To direct the operation, the cooking field device comprises a control unit 24a, which has a calculation unit, a storage unit, and an operating program stored in the storage unit, which is intended to be executed by the unit of calculation
    Figure 2 shows a simplified wiring diagram of the cooking field device. The cooking field device has a heating module 10a which, in the present case, comprises exactly one heating element configured as an inductor. In the present case, the heating module 10a is assigned to one of the heating zones 28a. Alternatively, it is conceived that a heating module comprises several heating elements configured as inductors and / or a connection arrangement for switching between the heating elements. In this case, the heating module could be assigned to several and / or all heating zones.
    Also, the cooking field device comprises a power source (not shown), which is made in this case as a connection to the network, and a rectifier unit (not shown), which is intended to rectify the grid voltage. of the power source and supply it to an energy storage unit 32a of the cooking field device. As an alternative, the use of a power source, specifically a voltage source, other than a network connection is conceived. Also, an additional rectifier unit could also be dispensed with when a continuous voltage source is used.
    In addition, the cooking field device comprises an inverter 12a, which comprises two inverter switches 14a, 16a identical to each other. The inverter switches 14a, 16a are made as bidirectional unipolar semiconductor switches, each of which in this case comprises an inverter connection element 34a made as an IGBT with a diode 36a connected in parallel to it and with a storage capacity 38a connected in parallel to it. Each of the inverter switches


    14a, 16a is electrically conductively connected to a central socket 40a of the inverter 12a. The inverter 12a is intended to transform a rectified mains voltage vB pulsing of the energy storage unit 32a into a high-frequency heating current i0, providing it in the central outlet 40a, and supplying it to the heating module 10a. Alternatively, it is also conceived to perform the inverter switches differently and / or dispense with a diode and / or a storage capacity connected in parallel to an inverter connection element.
    Also, the cooking field device comprises a resonant capacity 18a, which is realized as a condenser. The resonant capacity 18a in the present case has a Cr capacity of 1,440 nF, and is associated with the heating module 10a, so it is a constituent part of an oscillating electric circuit and can be charged through the inverter 12a.
    In the present case, the first terminal of the inverter 12a is connected to the first terminal of the energy storage unit 32a. The term "connected" includes here and then the concept of connected electrically conductive. The second terminal of the inverter 12a is connected to the second terminal of the energy storage unit 32a and to the second terminal of the resonant capacity 18a. The central socket 40a of the inverter 12a is connected to the first terminal of the heating module 10a, and the second terminal of the heating module 10a is connected to the first terminal of the resonant capacity 18a. Therefore, the heating module 10a is arranged in the bridge branch located between the central outlet 40a and the resonant capacity 18a. In the present case, the heating module 10a is actuated in a half bridge connection, although as an alternative it is conceived that the heating module is operated in a complete bridge connection.
    Also, the cooking field device comprises a capacity voltage measurement unit 22a, which in this case comprises a voltage divider and an analog-to-digital converter connected next. In addition, the capacity voltage measurement unit 22a has a data connection with the control unit 24a. The capacity voltage measurement unit 22a is provided to measure the capacity voltage vc of the resonant capacity 18a and transmit it to the control unit 24a. In the present case, the cooking field device does not have other measurement units, in particular, voltage and / or current measurement units. However, as an alternative, it is also conceived that, in addition to a capacity voltage measurement unit, a cooking field device comprises other measurement units,


    specifically, units of measurement of voltage and / or current, in order to increase the safety of operation.
    Figure 3 shows a schematic graph of several signals for the control of the cooking field device. The ordinate axis 42a is represented as the y axis, and time is represented on the abscissa axis 44a. Curve 46a illustrates the connection states of a first inverter switch 14a of inverter 12a, and curve 48a illustrates the connection states of a second inverter switch 16a of inverter 12a. A level "0" here defines a non-conductive and / or open state, while a level "1" describes a conductive and / or closed state. Curve 50a shows an output voltage v0 of inverter 12a, and curve 52a shows the temporal progression of the heating current i0.
    In an operating state, the control unit 24a is provided to connect the inverter switches 14a, 16a alternately and periodically, with a connection frequency fsw which in this case amounts to approximately 75 kHz. Therefore, at least a first moment, the first inverter switch 14a is open and the second inverter switch 16a is closed and, at least a second moment, other than the first moment, the first inverter switch 14a is closed and the second inverter switch 16a is open.
    In the present case, the control unit 24a is provided to determine the power supplied P0 of the heating module 10a from the capacity voltage vc of the resonant capacity 18a. The power supplied P0 corresponds here to a heating power of the heating module 10a which, in one or more operating states, is supplied to a cooking battery supported on the cooking field plate, and which serves to heat the battery Cooking Here, the control unit 24a is intended to evaluate only the capacity voltage vc of the resonant capacity 18a in order to determine the power supplied P0.
    The capacity voltage measurement unit 22a is intended to measure exactly two values of the capacity voltage vc during the duration of a connection period Tsw, in particular, during each duration of a connection period Tsw, of the first power switch. 14a inverter. In the present case, the capacity voltage measurement unit 22a is provided to measure exactly two values of the capacity voltage vc during each connection time T0 of the first inverter switch 14a. In the present case, the service cycle D of the first inverter switch 14a amounts to 0.5. The capacity voltage measurement unit 22a is provided in this case to measure the value of the capacity voltage vc at a connection time t1 of the first power switch.


    14a inverter. Therefore, the capacity voltage measurement unit 22a is provided to measure the value of the capacity voltage vc simultaneously at the start of a connection time T0 of the first inverter switch 14a. Also, the capacity voltage measurement unit 22a is provided to measure another value of the capacity voltage vc at a time of disconnection t2 of the first inverter switch 14a. Therefore, the capacity voltage measurement unit 22a is provided to measure another value of the capacity voltage vc simultaneously at the end of a connection time T0 of the first inverter switch 14a. Alternatively, it is conceived that a unit of measurement of the voltage of capacity is provided to measure three or more, four or more and / or five or more values of the voltage of capacity during the duration of a period of connection and / or during a connection time of at least one of the inverter switches. In addition, it is conceived that the values of the capacity voltage are determined at a time of connection and / or at a time of disconnection of a second inverter switch. In addition, a capacity voltage measurement unit could be provided to measure one or more values of the capacity voltage at another time.
    In the present case, the control unit 24a is intended to evaluate for each duration of a period of connection Tsw of one of the inverter switches 14a, 16a exactly two values of the capacity voltage vc in order to determine the power supplied P0. In the present case, the control unit 24a is provided to evaluate the value of the capacity voltage vc, measured at the beginning of the connection time T0, and another value of the capacity voltage vc, measured at the end of the connection time T0 , in order to determine the power supplied P0 of the heating module 10a. Here, the control unit 24a is intended to determine the power supplied P0 of the heating module 10a by means of the following equation, which depends solely on one variable, in particular, on the capacity voltage vc:
    ಾ೎⋅ ௏ ೝ⋅ ஼ ೞೢ ௙ ൌ ଴ ܲ
    (1) ሿሺ ݐ ൌ 0 ሻ ௖ െ ݒ ሻ ௦௪ ܶܦ ݐ ൌ ሺ ௖ ݒ ሾ⋅
    ஽
    The supplied power P0 consists here of the connection frequency fsw and / or the duration of the connection period Tsw, of the capacity Cr, of the service cycle D, of the average value VMc of the capacity voltage vc, as well as of the difference between the other value of the capacity voltage vc, measured at the end of the connection time T0, and the value of the capacity voltage vc, measured at the beginning of the connection time T0. Equation 1 can be extracted from the following equations for the power supplied P0 and the capacity voltage vc.


    ⋅௦௪ൌ ݂ ଴ ܲ
    ൌ ݂௦௪ ௏ ಾ೎ ஽் ೞೢ
    ׬⋅
    ஽ ଴
    (2)
    ݐ ݀ ሺ ݐ ሻ ଴ ݅
    ݐ ݀ ሺ ݐ ሻ ଴ ݅⋅ ଴ ݒ ೞೢ ் ଴ ׬
    ׬
    ݒ ௖ ሺ ݐ ሻ ൌ ܸ ெ௖, ଴ ൅ ஼ ଵ ೝ௧
          (3)
    Here, the control unit 24a is further provided to determine the average value VMc of the capacity voltage vc from the capacity voltage vc. The average value VMc of the 5 voltage capacity vc is obtained here through the following correlation:
    (4) ݐ ݀ ሻ ݐ ሺ ௖ ݒ ௧ ׬௦௪ ൌ ݂ ெ௖ ܸ
    Also, the control unit 24a is provided to determine the average value VMc of the capacity voltage vc from three or more values of the capacity voltage vc. In the present case, the control unit 24a is intended to evaluate the three or more values of
    10 the capacity voltage vc of at least two directly consecutive connection period Tsw. However, moreover, more capacity voltage values could also be determined for each duration of the connection period.
    The control unit 24a is also provided to determine the average VMB value of a rectified mains voltage vB from the capacity voltage vc, where applicable:
    (5) ಾ೎ ஽௏ ൌ ெ஻ ܸ
    Also, the control unit 24a is provided in this case to determine the heating current i0 only from the capacity voltage vc, and to determine the output voltage v0 of the inverter 12a only from the capacity voltage vc. From
    In this way, all the operating data of the cooking field 26a can be evaluated without additional measuring units.
    In Figure 4, another embodiment of the invention is shown. The following description and drawing are essentially limited to the differences between the embodiments, where, in relation to components indicated in the same way, in particular, in relation to components with the same reference symbols, it can also be basically referred to drawing and / or the description of the other embodiment of figures 1 to
    3. For the differentiation of the examples of embodiment, the letter "a" is postponed to the reference symbols of the embodiment example of Figures 1 to 3 and, in the embodiment example of Figure 4, has been replaced by the Letter B".
    ݐ ݀ ሺ ݐ ሻ ଴ ݅
    image7
    The embodiment example of Figure 4 differs basically from the previous embodiment example in the amount of resonant capacities 18b, 20b.
    In the present case, the cooking field device comprises a first resonant capacity 18b and a second resonant capacity 20b, which are connected in series and are identical to each other. A central socket 54b of the resonant capacities 18b, 20b is connected to the second terminal of a heating module 10b. In this case, the capacity voltage vc corresponds to the voltage between a potential value defined in the central outlet 54b and a ground potential.


    Reference symbols
    10 Heating module
    12 Investor
    14 Inverter switch
    5 16Inverter switch
    18 Resonant capacity
    twenty Resonant capacity
    22 Unit of measurement of the voltage of capacity
    24 Control unit
    10 26Cooking field
    28 Heating zone
    30 Control unit
    32 Power storage unit
    3. 4 Inverter connection element
    fifteen 36Diode
    38 Storage capacity
    40 Central socket
    42 Edge of ordered
    44 Abscissa shaft
    twenty 46Curve
    48 Curve
    fifty Curve
    52 Curve
    54 Central socket
    25 Cr Capacity
    I0 Heating current
    T0 Connection time
    Tsw Connection Period Duration
    t1 Connection moment
    30 t2Moment of disconnection
    v0 Output voltage
    vB Mains voltage rectified
    vC Capacity voltage
    权利要求:
    Claims (9)
    [1]
    image 1
    1. Induction cooking device with one or more heating modules (10a; 10b), with one or more inverters (12a; 12b) comprising two or more inverter switches (14a, 16a; 14b, 16b), and are planned for
    5 supply at least one heating current (i0), with one or several resonant capacities (18a; 18b, 20b) assigned to the heating module (10a; 10b), with one or more units of capacity voltage measurement (22a; 22b) which are provided to measure the capacity voltage (vc) of the resonant capacity (18a; 18b, 20b), and with at least one control unit (24a;
    10 24b), characterized in that the control unit (24a; 24b) is intended to determine in one or more operating states the power supplied (P0) of the heating module (10a; 10b) from the capacity voltage (vc ) of the resonant capacity (18a; 18b, 20b).
    A cooking field device according to claim 1, characterized in that to determine the power supplied (P0), the control unit (24a; 24b) evaluates only the capacity voltage (vc) of the resonant capacity (18a; 18b , 20b).
    [3]
    3. Cooking field device according to claims 1 or 2, characterized
    20 because the capacity voltage measurement unit (22a; 22b) is intended to measure exactly two values of the capacity voltage (vc) of the resonant capacity (18a; 18b, 20b) for the duration of a connection period (Tsw) of at least one of the inverter switches (14a, 16a; 14b, 16b).
    A cooking field device according to one of the preceding claims, characterized in that the capacity voltage measurement unit (22a; 22b) is provided to measure exactly two values of the capacity voltage (vc) for a period of time. connection (T0) of one of the inverter switches (14a, 16a; 14b, 16b).
    30
    [5]
    5. Cooking field device according to one of the preceding claims, characterized in that the capacity voltage measurement unit (22a; 22b) is provided to measure the value of the capacity voltage (vc) at the beginning of a period of time. connection (T0) of one of the inverter switches (14a,
    35 16a; 14b, 16b).
    16
    image2
    [6]
    6. Cooking field device according to one of the preceding claims, characterized in that the capacity voltage measurement unit (22a; 22b) is provided to measure the value of the capacity voltage (vc)
    5 at the end of a connection time (T0) of one of the inverter switches (14a, 16a; 14b, 16b).
    [7]
    7. Cooking field device according to one of the preceding claims, characterized in that the control unit (24a; 24b) is provided
    10 to evaluate two or more values of the capacity voltage (vc) in order to determine the power supplied (P0).
    [8]
    8. Cooking field device according to one of the preceding claims, characterized in that the control unit (24a; 24b) is provided
    15 to determine the average value (VMc) of the capacity voltage (vc) from the capacity voltage (vc).
    [9]
    9. Cooking field device according to one of the preceding claims, characterized in that the control unit (24a; 24b) is provided
    20 to determine the average value (VMB) of a rectified mains voltage (vB) from the capacity voltage (vc).
    [10]
    10. Cooking field device according to claims 8 or 9, characterized in that the control unit (24a; 24b) is provided to determine the average value
    25 (VMc) of the capacity voltage (vc) and / or the average value (VMB) of the rectified mains voltage (vB) from three or more values of the capacity voltage (vc).
    [11]
    11. Cooking range (26a; 26b) with one or more cooking field devices according to one of the claims set forth above.
    17
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    同族专利:
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    EP3030041B1|2017-09-13|
    EP3030041A1|2016-06-08|
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    ES2573144B1|2017-03-16|
    引用文献:
    公开号 | 申请日 | 公开日 | 申请人 | 专利标题
    NZ239366A|1991-08-12|1995-04-27|Auckland Uniservices Ltd|Switched resonant lc power supply with inductively coupled output|
    US5968398A|1997-05-16|1999-10-19|The Lepel Corporation|Apparatus and method for non-contact detection and inductive heating of heat retentive food server warming plates|
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    WO2013166579A1|2012-05-10|2013-11-14|Arda Power Inc.|Dc-dc converter circuit using an llc circuit in the region of voltage gain above unity|
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    EP2437573B1|2009-05-26|2015-11-11|Mitsubishi Electric Corporation|Induction heating method|ES2673100B1|2016-12-13|2019-03-28|Bsh Electrodomesticos Espana Sa|Cooking appliance device and method for putting into operation a cooking appliance device|
    EP3534673B1|2018-03-02|2021-09-15|Electrolux Appliances Aktiebolag|Induction hob and method for operating an induction hob|
    EP3967107A1|2019-05-10|2022-03-16|BSH Hausgeräte GmbH|Cooking appliance|
    法律状态:
    2015-06-05| PC2A| Transfer of patent|Owner name: BSH HAUSGERATE GMBH Effective date: 20150529 |
    2017-03-16| FG2A| Definitive protection|Ref document number: 2573144 Country of ref document: ES Kind code of ref document: B1 Effective date: 20170316 |
    2018-07-30| MH2A| Renunciation|Effective date: 20180724 |
    优先权:
    申请号 | 申请日 | 专利标题
    ES201431791A|ES2573144B1|2014-12-03|2014-12-03|Induction cooking device with one or more resonant capacities|ES201431791A| ES2573144B1|2014-12-03|2014-12-03|Induction cooking device with one or more resonant capacities|
    EP15195463.3A| EP3030041B1|2014-12-03|2015-11-19|Cooking hob device and method for operating a cooking hob device|
    ES15195463.3T| ES2643542T3|2014-12-03|2015-11-19|Cooking field device and procedure for operating a cooking field|
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