ES2719130A1 - COOKING FIELD DEVICE (Machine-translation by Google Translate, not legally binding) - Google Patents

Abstract

Cooking range device. The present invention relates to a cooking field device (10a-b), in particular an induction cooking field device, with multiple heating units (12a-b) defining at least a variable surface area (14a-b), which has at least a first partially defined cooking surface area (16a-b) and at least a second partially defined cooking surface area (18a-b) . In order to provide a generic cooking range device with better heating battery heating properties (60a-b), it is proposed that the cooking range device (10a-b) have at least one unit of control (38a-b), which at all times maintains at least essentially constant the total output power of the first heating units (12a1-b1) of the heating units (12a-b), which define the first partial area cooking surface (16a-b), and the total output power of the second heating units (12a2-b2) of the heating units (12a-b), which define the second partial cooking surface area (18a -b), in at least one operating state in which in each of the partial cooking surface areas (16a-b, 18a-b) at least part of a cooking battery (60a-b) is supported . (Machine-translation by Google Translate, not legally binding)

Description

DESCRIPTION

COOKING FIELD DEVICE

The present invention refers to a cooking field device according to the preamble of claim 1 and a method for putting into operation a cooking field device according to the preamble of claim 12.

Through the prior art, cooking field devices with multiple heating units that define a variable cooking surface area are already known. The first heating units of the heating units define a first partial cooking surface area of the variable cooking surface area and the second heating units of the heating units define a second partial cooking surface area of the variable cooking area of cooking surface, different from the first partial cooking surface area. In an operating state in which at least part of a cooking battery is supported in each of the partial cooking surface areas, a control unit of the cooking field device heats the supported cooking battery with a power of theoretical heating provided for the corresponding cooking battery. The total output power of the heating units can fluctuate here depending on the cooking battery configuration, so flicker can occur.

The present invention solves the technical problem of providing a generic cooking field device with better properties in terms of heating the cooking batteries. According to the invention, this technical problem is solved by the features of claims 1 and 12, while advantageous embodiments and improvements of the invention can be extracted from the secondary claims.

The invention refers to a cooking field device, in particular, to an induction cooking field device, with multiple heating units defining at least one variable cooking surface area, which has at least a first area Partially defined fixed cooking surface, at least a second fixedly defined partial cooking surface area, and at least a third fixedly defined partial cooking surface area, where the cooking field device is present at minus a control unit, which at any time keeps at least essentially constant the total output power of the first heating units of the heating units, which define the first partial area of cooking surface, and the total output power of the second heating units of the heating units, which define the second partial area of cooking surface, in order to minimize the appearance of flickering, in at least one operating state in which at least part of a cooking battery is supported in each of the partial cooking surface areas.

By an embodiment of this type, optimum heating of the cooking batteries can be achieved by avoiding the appearance of flickering. In this way, the impression that the cooking field is defective can be avoided in the user, which makes it possible for the comfort of use to be high. It is possible to supply to each approximate or exactly cooking battery the theoretical heating power requested for it and at the same time keep the total output power constant at all times. Likewise, a large number of cooking batteries can be heated simultaneously with a theoretical heating power and, advantageously, avoiding the appearance of flickering. Thanks to the fact that the cooking batteries are distributed between the partial cooking surface areas, the complexity of calculating the output powers and / or time intervals by means of the control unit can be reduced, so that it is possible to achieve better functionality and / or fast processing of the control inputs and, with this, great convenience of use. Thus, the regulations related to flickering can be complied relatively easily and / or without complications.

The term "cooking field device", in particular, "induction cooking device" includes the concept of at least a part, in particular, a construction subgroup, of a cooking field, in particular, of a field induction cooking. The cooking field device has at least one support plate under which the heating units are arranged in at least the installation position.

The term "support plate" includes the concept of at least one plate-shaped unit, which is intended to support at least one cooking battery and / or to place at least one cooking product in order to heat them. . The support plate could be made, for example, as a partial area of at least one countertop, in particular, at least one kitchen countertop, of a cooking system presenting the cooking field device. Alternatively or additionally, the support plate could be made as a cooking field plate. The support plate made as a cooking field plate could form at least a part of an external cooking field housing and largely or completely form this external cooking field housing together with at least one outer housing unit, with which the support plate made as a cooking field plate could be attached in at least the assembled state. As an example, the support plate could be formed largely or by complete with glass and / or ceramic and / or neolith and / or dekton and / or wood and / or marble and / or stone, in particular, natural stone, and / or laminated material and / or metal and / or plastic and / or ceramic. The expression "largely or completely" includes the concept of a percentage, in particular, a percentage by weight and / or a percentage by volume, of at least 70%, preferably, at least 80%, advantageously , at least 90% and, preferably, at least 95%.

The term "heating unit" includes the concept of a unit that is intended to supply power to at least one cooking battery in at least one operating state in order to heat the cooking battery. The heating unit could be realized , for example, as a resistance heating unit, and it is intended to transform the energy into heat and supply it to the cooking battery in order to heat it. Alternatively or additionally, the heating unit could be made as a heating unit by induction and be provided to supply the cooking battery with energy in the form of an alternating electromagnetic field, where the energy supplied to the cooking battery could be transformed into heat in the cooking battery. In at least one operating state, the units heating are arranged below the variable cooking surface area and / or plate of support and, advantageously, in an area close to the variable cooking surface area and / or the support plate.

The heating unit could have exactly one heating element, which could be defined by exactly one conducting element that in at least one operating state could be provided to conduct electric current in order to provide thermal energy. Alternatively, the heating unit could have at least two, preferably at least three, advantageously, at least five and, preferably, more heating elements, each of which could have exactly one element. driver. The heating unit could have a group of heating elements.

The term "variable" cooking surface area includes the concept of a cooking surface area that is intended to support at least one cooking battery in any position in order to heat it. For example, the variable area of The cooking surface could be at least a partial area of the surface of the support plate, in particular, a partial area of the surface of the support plate directed towards the user in at least one operating state. arranged below the variable cooking surface area in at least one state of functioning. In at least one operating state, the control unit forms from at least a part of the heating units at least one heating zone that is adapted to at least one cooking battery resting on, in particular, the size and / or in the form of at least one cooking battery resting on top. The variable cooking surface area differs from a cooking surface area in which the cooking zones are fixed predetermined by markings on the cooking surface area. The heating units that define the variable cooking surface area could be arranged, for example, in the form of a matrix. Alternatively or additionally, the heating units that define the variable cooking surface area could be, for example, housed at least partially mobile, in particular, approximately or exactly parallel to the main extension plane of the cooking plate. support, and could be made as mobile heating units.

The term "main extension plane" of an object includes the concept of a plane that is parallel to the largest lateral surface of the smallest imaginary geometric parallelepiped that completely fits the object, and which runs through the central point of the parallelepiped. The expression "approximately or exactly in parallel" includes the concept of the orientation of an address relative to a reference direction in a plane, where the address present with respect to the reference direction a deviation of at most 8 °, advantageously , of maximum 5 ° and, particularly advantageously, of maximum 2 °.

The term "fixed area" partial cooking surface area includes the concept of a partial cooking surface area whose position is fixed and / or predetermined in a non-modifiable manner and / or regardless of the heating zone configuration and / or the cooking battery configuration for at least one property, for example, for at least one structural and / or electrical and / or spatial property, and / or for at least one marking, in any operating state. By way of example, a fixedly defined partial cooking surface area could be fixed in a non-modifiable and / or constant manner by at least connecting the heating units defining the partial cooking surface area to a phase of the common grid current voltage and / or by the spatial arrangement of the heating units that define the partial cooking surface area.

At least a part of the heating units define the first partial cooking surface area and are referred to below as the first heating units.

At least a part of the heating units define the second partial cooking surface area and are referred to below as second heating units.

The variable cooking surface area could, for example, have a quantity of n partial cooking surface areas, where n could be a real integer greater than two. In at least one operating state, at least one part of a cooking battery could be supported in each of the n partial cooking surface areas. In the operating state in which at least part of a cooking battery is supported in each of the n partial areas of the cooking surface, the control unit could at all times keep at least essentially constant the total output power of the respective heating units of the heating units defining the corresponding partial cooking surface area. In this way, it is possible to extend the two phases of the mains voltage to a greater amount of phases of the mains current and / or expand to a large amount of cooking batteries of which at least one part is arranged in a partial cooking surface area and at least one part is arranged in another partial cooking surface area.

The term "control unit" includes the concept of an electronic unit that is preferably integrated, at least in part, into a control and / or regulator unit of a cooking field, and which is preferably provided for directing and / or regulate at least the heating units 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 planned to be executed by the calculation unit.

The expression that "in each" of the partial cooking surface areas is supported "at least a part of a cooking battery" includes the concept that in one of the partial cooking surface areas it is supported by at least a part of a cooking battery and at least one part of a cooking battery is supported on another part of the cooking surface. As an example, in the partial cooking surface area of the partial cooking surface areas, at least a part of a cooking battery could be supported and, in the other of the partial cooking surface areas, it could be supported At least one other part of the cooking battery. Alternatively or additionally, at least one cooking battery may be supported on the partial cooking surface area of the partial cooking surface areas. complete and, in the other of the partial cooking surface areas, at least one other cooking battery could be fully supported, different from the cooking battery.

The term "total output power" of the heating units that define a partial cooking surface area includes the concept of the sum of the output powers of all the heating units that define the partial cooking surface area in a determined time of the duration of a period. The term "output power" of one of the heating units includes the concept of the electrical power that the heating unit transmits to one or more cooking batteries supported on it in at least one state of operation and / or that the heating unit provides in at least one operating state to heat one or more heating zones and / or one or more cooking batteries. The output power could be characterized, for example, by at least one electric current. In at least one operating state, the heating unit could, for example, transform the output power into at least one conductive element of the heating unit into a partially or completely heat current, advantageously, in large part or completely and, preferably, completely, and supply the heat stream to heat one or more heating zones and / or one or more cooking batteries. Alternatively or additionally, the heating unit could provide a high frequency alternating electromagnetic field in at least one state of operation, which could be transformed into heat in a cooking battery.

The total output power differs from the average output power. The term "average output power" of a heating unit includes the concept of the output power of the average heating unit over time, in particular, for at least a period of time. The average output power of the unit heating is the quotient of the sum of all the output powers of the heating unit during the time interval and the time interval.As an example, the time interval could be at least much of the duration of a period and, advantageously, the entire duration of a period Preferably, the control unit adjusts in at least one operating state the average output power for each heating zone separately, advantageously, by activation of the heating units that heat the heating zone, such that the average output power corresponds to the predetermined theoretical heating power for the heating zone. warming up In at least one operating state, the control unit adapts at any time the heating power supplied to at least one heating zone to the predetermined theoretical heating power for the zone of heating. The theoretical heating power could be predetermined, for example, by the user through one or more control inputs made through a user interface, and / or by a cooking program that could be stored in the storage unit of the control unit. Particularly advantageously, the control unit heats the supported cooking battery and / or at least one heating zone provided for the cooking battery with at least one theoretical heating power provided for the cooking battery in the operating state.

The expression that the control unit maintains at all times "at least essentially constant" a total output power in at least one operating state includes the concept that the control unit adjusts a operating power in the operating state. total output at any one time and another total output power at any other time, which differs from the moment, so that the ratio of the lowest of the total output powers and the largest of the total output powers amounts to at least 0.9, preferably, at least 0.95, advantageously, at least 0.97, particularly advantageously, at least 0.98, preferably, at least 0.99 and, particularly preferably, at least 0.995.

If it is possible to keep constant the total output powers of the heating units that define the partial cooking surface areas by simultaneously heating the cooking battery with a predetermined theoretical heating power for the cooking battery, the quotient of the lowest of the total output powers and the largest of the total output powers amounts to at least 0.97, particularly advantageously, at least 0.98, preferably at least 0.99 and, of particularly preferred way, at least 0.995.

In the event that it is impossible to keep the total output powers of the heating units that define the partial cooking surface areas constant by simultaneously heating the cooking battery with a predetermined theoretical heating power for the cooking battery, the quotient of the lowest of the total output powers and the largest of the total output powers amounts to at least 0.9, preferably, at least 0.92, advantageously, at least 0.93, particularly advantageously, at least 0.94, preferably, at least 0.95 and, particularly preferably, at least 0.97.

The difference in total output power between the total output power at any time and the other total output power at any other time amounts to Approximately or exactly zero. The difference in total output power between two total output powers at any two different times of the duration of a period amounts to approximately or exactly zero. The expression "total output power difference" includes the concept of the difference between the total output powers at two different times.

As an example, the total output power of the first heating units and the total output power of the second heating units could be approximate or exactly and, advantageously, exactly identical. However, the total output power of the first heating units and the total output power of the second heating units differ from each other. In this way, the total output powers of the heating units can be flexibly adjusted, so that the supported cooking battery can be heated flexibly and, advantageously, with the predetermined theoretical heating power.

In the operating state, the control unit could adjust by frequency at least one output power of one or more of the heating units, advantageously, at least a large part of the output powers of the heating units and , preferably, all the output powers of the heating units. Alternatively or additionally, the control unit could adjust in the operating state by means of the service cycle at least one output power of one or more of the heating units, advantageously, at least a large part of the power output of the heating units and, preferably, all output powers of the heating units.

The term "flicker" includes the concept of a subjective impression of visually perceived instability, which is caused by a light stimulus whose luminance or spectral distribution fluctuates over time. The flickering can be caused in particular by a decrease in the mains voltage.

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.

By way of example, in the operating state, at least a large part of the and, advantageously, each of the first heating units is connected to a first phase of the mains current voltage and at least a large part of the and, of advantageously, each of the second heating units is connected to the same first phase of the mains current voltage. Preferably, in the operating state, at least a large part of the and, advantageously, each of the first heating units are connected to a first phase of the mains current voltage and at least a large part of and, advantageously, each of the second heating units is connected to a second phase of the mains current voltage other than the first phase of the mains current voltage. In the operating state, the first heating units are connected to the first phase of the mains current voltage and the second heating units are connected to the second phase of the mains current voltage. The term "phase of the network current voltage" includes the concept of a phase of a home network, specifically, exactly one phase of a home network. The first phase of the network current voltage and the second phase of the mains current voltage could be offset with a phase angle of approximately or exactly 120 °. The expression "at least a large part" includes the concept of a percentage, in particular, a percentage by weight and / or percentage by volume and / or numerical percentage, at least 70%, preferably, at least 80%, advantageously, at least 90% and, preferably, at least 95%. Thus, it is possible to simultaneously heat multiple cooking batteries. The total output power can be limited by each phase of the mains current voltage, so that the complexity of calculating the output powers and / or time intervals by means of the control unit can be reduced. In a particularly advantageous way, it is possible to keep at least essentially constant the total output power of heating units that in the operating state are connected to a single phase of the common mains current voltage, whereby the rules provided in relation to flickering.

In addition, it is proposed that, in the operating state, the first total output power, which is the total output power provided by the first heating units, adopts at most the value of the maximum power supplied by the first phase of the voltage of the mains current. The second total output power, which is the total output power provided by the second heating units, adopts at most in the operating state the value of the maximum power supplied by the second phase of the mains current voltage . The expression "maximum power supplied by a phase of the mains current voltage" includes the concept of the power that in at least one operating state is reachable and / or solicitable at most of / to the phase of the voltage of network current with independent of the configuration of the heating zone and / or the cooking battery supported. In Europe and, advantageously, in Germany, the maximum power supplied by the mains current voltage phase could, for example, adopt a maximum value of 3,600 W for each phase of the mains current voltage. net. In the operating state, the control unit drives the first heating units and the second heating units independently of each other and prevents an enhancer mode and / or the assignment of two or more phases of the mains current voltage to at least one of the heating units. In this way, it is possible to avoid overloading the heating units, and a lasting realization can be achieved. In particular, it can be achieved that the amount of different possible heating powers per heating unit is reduced compared to a higher power supplied at most by the first phase of the mains current voltage, so that it becomes possible that the calculations are simple and / or a simple control algorithm.

In the operating state, for example, a cooking battery could be supported on the first partial cooking surface area and another cooking battery, other than the cooking battery, could be supported on the second partial cooking surface area . Alternatively or additionally, at least a large part of the and, advantageously, each of the firing batteries could be supported at least in large part and, advantageously, completely, in one of the partial surface areas Cooking Preferably, in the operating state, at least a first partial cooking battery area of the cooking battery is supported on the first partial cooking surface area and at least a second partial cooking battery area thereof Cooking battery is supported by the second partial cooking surface area. Thus, a single firing battery is partially supported on the first partial cooking surface area and, simultaneously, partially on the second partial cooking surface area. In this way, it is possible to optimally heat even a cooking battery that is partially supported on each of the partial cooking surface areas.

In the operating state, the control unit could simultaneously operate at least by sections the first heating units that heat the first partial cooking battery area and the second heating units that heat the second partial cooking battery area. In the event that, in the operating state, the control unit simultaneously operates at least by sections the first heating units that heat the first partial battery area of cooking and the second heating units that heat the second partial cooking battery area, the control unit could operate in the operating state the first heating units and the second heating units with the same frequency and / or with different frequencies at least 17 kHz, preferably, at least 18 kHz, advantageously, at least 19 kHz and, preferably, at least 20 kHz, in order to avoid intermodulation buzzers. Preferably, in the operating state, the control unit operates without temporary overlaps the first heating units that heat the first partial cooking battery area and the second heating units that heat the second partial cooking battery area. In the operating state, the control unit first drives the first heating units that heat the first partial cooking battery area and then the second heating units that heat the second partial cooking battery area. Alternatively or additionally, the control unit could first activate the second heating units that heat the second partial cooking battery area and then the first heating units that heat the first area in the operating state partial cooking battery. In the operating state, the control unit prevents simultaneous operation at least by sections of the first heating units that heat the first partial cooking battery area and the second heating units that heat the second partial battery area of cooking if it is possible to avoid intermodulation hums while keeping constant the total output powers of the heating units that define the partial cooking surface areas. In this way, it is possible to avoid intermodulation buzzes in a particularly safe way, so that great comfort of use can be achieved.

Likewise, it is proposed that, in the operating state, the sum of the activation time of the first heating units that heat the first partial cooking battery area and the activation time of the second heating units that heat the second area partial cooking battery corresponds at most to the duration of a period. Particularly advantageously, the sum of the activation time of the first heating units that heat the first partial cooking battery area and the activation time of the second heating units that heat the second partial cooking battery area is less than the duration of a period. Thus, operation without overlaps of the first heating units that heat the first partial cooking battery area and the second ones becomes possible. heating units that heat the second partial cooking battery area, so that it is possible to avoid intermodulation hums efficiently.

The variable cooking surface area could, for example, exclusively present the first partial cooking surface area and the second partial cooking surface area. However, the variable cooking surface area preferably has at least a third fixedly defined partial cooking surface area, on which at least a third partial cooking battery area thereof is supported in the operating state. cooking battery Thus, the cooking battery can be heated optimally and / or efficiently.

In addition, it is proposed that, in the operating state, at least a large part of the third heating units of the heating units defining the third partial area of the cooking surface be connected to a third phase of the current voltage of net. At least a part of the heating units define the third partial cooking surface area and are referred to below as third heating units. In the operating state, the third heating units are connected to the third phase of the mains current voltage. In this way, a particularly rapid heating of the cooking battery and / or a heating of the cooking battery with a high heating power is made possible.

Likewise, it is proposed that, in the operating state, the control unit actuates the first heating units and the second heating units, avoiding intermodulation buzzing. To avoid intermodulation humming, the control unit could, for example, operate the first heating units and the second heating units in the operating state without temporary overlaps. Alternatively or additionally, to avoid intermodulation hum, the control unit could operate the first heating units and the second heating units in the operating state with approximately or exactly the same frequency. To avoid intermodulation hum, the control unit could operate the first heating units and the second heating units in the operating state with different frequencies at least 17 kHz. Thus, a great comfort of use and / or a heating of the cooking battery can be achieved little noisy, preferably silent.

In the event that it is impossible to avoid intermodulation humming by keeping constant the total output powers of the heating units that define the partial cooking surface areas, the control unit it could, for example, prioritize that the total output powers of the heating units that define the partial cooking surface areas be kept constant and assume the appearance of intermodulation hums. Preferably, in the event that it is impossible to avoid intermodulation humming by keeping the total output powers of the heating units that define the partial cooking surface areas simultaneously constant, the control unit is provided to prioritize the avoidance of Intermodulation hums. In the operating state in which it is possible to avoid intermodulation hums by keeping the total output powers of the heating units that define the partial areas of the cooking surface at the same time constant, the control unit keeps at least essentially constant the powers of Total output of the heating units that define the partial cooking surface areas while avoiding intermodulation hums. In at least one other operating state in which it is impossible to avoid intermodulation humming by keeping constant the total output powers of the heating units that define the partial cooking surface areas, the control unit prevents the appearance of humming of intermodulation and assumes minimum fluctuations of the total output powers of the heating units that define the partial cooking surface areas. These fluctuations occur in a range that is contained in the expression "at least essentially constant." In this way, the appearance of intermodulation hums can be avoided at any time, thus achieving a quiet and / or comfortable operation of the cooking field. Present the cooking field device.

In addition, it is proposed that the control unit actuate the first heating units and the second heating units in the operating state, preventing the appearance of flickering. To prevent flickering, the control unit keeps the total output power of the first heating units and the total output power of the second heating units at least essentially constant in the operating state. Thus, a high level of comfort of use can be provided and / or flickering can be prevented.

As an example, in the event that it is impossible to prevent the appearance of flickering and / or keep constant the total output powers of the heating units that define the partial cooking surface areas by simultaneously heating the cooking battery with a power of predetermined theoretical heating for the cooking battery, the control unit could be provided to prioritize the avoidance of the appearance of flashes and / or that the total output powers remain constant of the heating units that define the partial cooking surface areas. Preferably, if it is impossible to prevent the appearance of flickering and / or keep constant the total output powers of the heating units that define the partial cooking surface areas by simultaneously heating the cooking battery with a power of default theoretical heating for the cooking battery, the control unit is intended to prioritize the heating of the cooking battery with the default theoretical heating power for the cooking battery and assumes the appearance of flashes and / or at least the modification and / or at least one jump in the total output powers of the heating units that define the partial cooking surface areas. Advantageously, if it is impossible to prevent the appearance of flickering and / or keep constant the total output powers of the heating units that define the partial cooking surface areas while simultaneously heating the cooking battery with the power of theoretical heating, the control unit is intended to heat the cooking battery with the predetermined theoretical heating power for it and minimize both the appearance of flickering and / or at least the modification and / or at least one jump in the powers Total output of the heating units that define the partial cooking surface areas. Thus, optimal cooking results can be achieved.

Optimum heating of the cooking battery can be achieved by means of a cooking field, in particular, by an induction cooking field, with at least one cooking field device according to the invention.

Likewise, it is possible to heat cooking batteries in a particularly advantageous manner by means of a method for putting into operation a cooking field device with multiple heating units defining at least one variable area of cooking surface, which has at least one first fixed cooking surface partial area defined and at least a second fixed cooking surface partial area, where the total output power of the first heating units of the heating units, which define the first area partial cooking surface, and the total output power of the second heating units of the heating units, which define the second partial cooking surface area, be maintained at all times at least essentially constant in at least one state of operation in which in each of the partial surface areas of cocc Ion is supported at least a part of a cooking battery. Thus, compliance with the regulations related to flickering can be difficult for competition, so that a high level of competitiveness can be achieved.

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. 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 field with a cooking field device in a cooking battery configuration, in schematic top view,

Fig. 2 several graphs in which for each cooking battery of the cooking battery configuration of Figure 1 an output power is plotted over time, in a schematic representation,

Fig. 3 two graphs in which, for heating units defining a partial area of respective cooking surface of the cooking field device of Figure 1, a total output power is drawn in each case over time, in a schematic representation,

Fig. 4 the cooking field with the cooking field device in another cooking battery configuration, in schematic top view,

Fig. 5 several graphs in which for each cooking battery of the cooking battery configuration of Figure 4 an output power is plotted over time, in a schematic representation,

Fig. 6 two graphs in which, for heating units defining a partial cooking surface area respective of the cooking field device of Figure 4, a total output power is drawn in each case over time, in a schematic representation,

Fig. 7 the cooking field with the cooking field device in another cooking battery configuration, in schematic top view,

Fig. 8 several graphs in which for each cooking battery of the cooking battery configuration of Figure 7 an output power is plotted over time, in a schematic representation,

Fig. 9 two graphs in which, for heating units defining a partial area of respective cooking surface of the cooking field device of Figure 7, in each case a total output power is plotted over time, in a schematic representation,

Fig. 10 the cooking field with the cooking field device in another cooking battery configuration, in schematic top view,

Fig. 11 several graphs in which for each cooking battery of the cooking battery configuration of figure 10 an output power is plotted over time, in a schematic representation,

Fig. 12 two graphs in which, for heating units defining a partial area of respective cooking surface of the cooking field device of Figure 10, in each case a total output power is plotted over time, in a schematic representation,

Fig. 13 an alternative cooking field with an alternative cooking field device in a cooking battery configuration, in schematic top view,

Fig. 14 several graphs in which for each cooking battery of the cooking battery configuration of Figure 13 an output power is plotted over time, in a schematic representation, and

Fig. 15 two graphs in which, for heating units defining a partial area of respective cooking surface of the cooking field device of Figure 13, in each case a total output power is plotted over time, in A schematic representation.

Figure 1 shows a cooking field 40a, which is made as an induction cooking field and which has a cooking field device 10a, which is made as an induction cooking device.

The cooking field device 10a has a support plate 42a. In this exemplary embodiment, the support plate 42a is made as a cooking field plate. In the assembled state, the support plate 42a forms a part of the outer housing of the cooking field 40a. The support plate 42a is provided to support the cooking battery 60a on top.

The cooking field device 10a has multiple heating units 12a for heating the cooking battery 60a. Only one of each of the objects present several times is accompanied by a reference symbol in the figures. In this exemplary embodiment, the cooking field device 10a has fifty-six heating units 12a. In the installation position, the heating units 12a are arranged under the support plate 42a. The heating units 12a are provided to heat the cooking battery 60a placed on the support plate 42a above the heating units 12a. In this exemplary embodiment, the heating units 12a are made as induction heating units.

In addition, the cooking field device 10a has a user interface 44a for the introduction and / or selection of operating parameters, for example, the heating power and / or the density of the heating power and / or the area of heating. Also, the user interface 44a is intended to give the user the value of an operating parameter.

The cooking field device 10a also has a control unit 38a. The control unit 38a is intended to execute actions and / or modify settings depending on the operating parameters entered through the user interface 44a. In a heating operating state, the control unit 38a regulates the power supply to the heating units 12a.

The heating units 12a define a variable cooking surface area 14a. In this exemplary embodiment, the variable cooking surface area 14a has a first fixed cooking surface part 16a fixedly defined and a second fixed cooking surface area 18a fixed. The first partial cooking surface area 16a and the second partial cooking surface area 18a are arranged adjacent to each other and partially adjoin one another. In this exemplary embodiment, the first partial cooking surface area 16a and the second partial cooking surface area 18a are arranged in an operating state adjacent to each other in the transverse direction 46a.

The first heating units 12a1 of the heating units 12a define the first partial cooking surface area 16a defined in a fixed manner. The amount of first heating units 12a1 amounts to 50% of the total number of heating units 12a. The first heating units 12a1 of the heating units 12a defining the first partial cooking surface area 16a are connected in the operating state to a first phase of the mains current voltage 48a.

The second heating units 12a2 of the heating units 12a define the second partial cooking surface area 18a defined in a fixed manner. The amount of second heating units 12a2 amounts to 50% of the total number of heating units 12a. The second heating units 12a2 of the heating units 12a defining the second partial cooking surface area 18a are connected in the operating state to a second phase of the mains current voltage 50a, other than the first phase of the mains current voltage 48a.

In the operating state, at least part of a cooking battery 60a is supported in each of the partial cooking surface areas 16a, 18a. In the case of a cooking battery configuration shown in Figure 1, in the operating state a first cooking battery 60a1 is partially supported on the first partial cooking surface area 16a and partially on the second partial surface area of cooking 18a. In the operating state, a first partial cooking battery area 62a1 of the first cooking battery 60a1 is supported on the first partial cooking surface area 16a and a second partial cooking battery area 64a1 of the first cooking battery 60a1 is supported on the second partial cooking surface area 18a. In the operating state, a second cooking battery 60a2 is fully supported on the first partial cooking surface area 16a and a third cooking battery 60a3 is fully supported on the second partial cooking surface area 18a.

In the operating state, the control unit 38a keeps essentially at all times the total output power of the first heating units 12a1 of the heating units 12a defining the first partial cooking surface area 16a. The total output power of the first heating units 12a1 of the heating units 12a defining the first partial cooking surface area 16a is hereinafter referred to as "first total output power." In the operating state, the first power Total output adopts at most the value of the power supplied at most by the first phase of the mains current voltage 48a.

In the operating state, the control unit 38a keeps essentially at all times the total output power of the second heating units 12a2 of the heating units 12a defining the second partial cooking surface area 18a. The total output power of the second heating units 12a2 of the heating units 12a defining the second area partial cooking surface 18a is referred to below as the "second total output power." In the operating state, the second total output power assumes at most the value of the maximum power supplied by the second phase of the voltage of the network current 50a.

In the operating state, the control unit 38a drives the first heating units 12a1 that heat the first partial cooking battery area 62a1 and the second heating units 12a2 that heat the second partial cooking battery area 64a1 without temporary overlaps (see figure 2). In the case of the cooking battery configuration shown in FIG. 1, the control unit 38a first operates in the operating state the first heating units 12a1 that heat the first partial cooking battery area 62a1 and, a then in time, the second heating units 12a2 that heat the second partial cooking battery area 64a1 (see Figure 2).

In the operating state, the control unit 38a drives the first heating units 12a1 that heat the first partial cooking battery area 62a1 and the second heating units 12a2 that heat the second partial cooking battery area 64a1 within the range of a single period duration T ^sc . In this exemplary embodiment, the sum of the activation time t ^{on, ci} of the first heating units 12a1 that heat the first partial cooking battery area 62a1 and the activation time t ^{on, c ii} of the second heating units 12a2 that heat the second partial cooking battery area 64a1 is less than the period duration T ^sc .

In the operating state, the control unit 38a drives the first heating units 12a1 and the second heating units 12a2 preventing flickering (see Figure 3). For the prevention of flickering, the control unit 38a keeps the total output power of the first heating units 12a1 defining the first partial cooking surface area 16a and the output power in essentially constant state of operation. total of the second heating units 12a2 of the heating units 12a defining the second partial cooking surface area 18a.

In the operating state, the control unit 38a drives the first heating units 12a1 and the second heating units 12a2 avoiding intermodulation buzzing (see Figure 2). In the operating state, the control unit 38a adjusts the output powers of the heating units 12a through the respective frequency.

To avoid intermodulation humming, the control unit 38a selects in the operating state a drive possibility from a catalog of drive possibilities. By way of example, the control unit 38a could operate in the operating state the first heating units 12a1 and / or the second heating units 12a2 approximately or at exactly the same frequency in order to avoid intermodulation hums. This is indicated in the figures, in particular, in figures 2, 5, 8, 11 and 14, by a dashed line.

Alternatively or additionally, in order to avoid intermodulation buzzes, the control unit 38a could operate in the operating state the first heating units 12a1 and / or the second heating units 12a2 with frequencies that could be differentiated at minus 17 kHz This is indicated in the figures, in particular, in figures 2, 5, 8, 11 and 14, by a line of dashes and dots.

Also alternatively or additionally, in order to avoid intermodulation humming, the control unit 38a could deactivate at least one part of the first and / or second heating units 12a1, 12a2 in the operating state and actuate at least a part of the first and / or the second heating units 12a1, 12a2 with a certain frequency. This is indicated in the figures, in particular, in figures 2, 5, 8, 11 and 14, by a solid line.

In the case of the cooking battery configuration shown in FIG. 1, the control unit 38a operates in the first operating time period T ^{sc during} the first time interval 12 ^sc which is assigned to the cooking battery 60a supported on the first partial cooking surface area 16a, namely, the first partial cooking battery area 62a1 and the second cooking battery 60a2, with essentially the same frequency (see Figure 2). In a second time interval of the period duration T ^sc , the control unit 38a operates in the operating state with a certain frequency the first heating units 12a1 that are assigned to the second firing battery 60a2 supported in the first area partial cooking surface 16a, and deactivates the first heating units 12a1 that are assigned to the first partial cooking battery area 62a1 supported on the first partial cooking surface area 16a. The sum of the first time interval and the second time interval coincides exactly with the period duration T ^sc . In the operating state, the control unit 38a keeps the total output power of the first heating units 12a1 activated at all times essentially constant (see Figure 3).

In the case of the cooking battery configuration shown in FIG. 1, the control unit 38a operates the second heating units 12a2 that are assigned to the operating state in a first time interval of the period duration T ^sc. the third cooking battery 60a3 supported in the second partial cooking surface area 18a with a certain frequency, and deactivates the second heating units 12a2 that are assigned to the second partial cooking battery area 64a1 supported in the second partial area of cooking surface 18a (see figure 2). In a second time interval of the period duration Tsc, the control unit 38a operates in the operating state with essentially the same frequency the second heating units 12a2 that are assigned to the cooking battery 60a supported in the second partial area of cooking surface 18a, in particular, to the second partial cooking battery area 64a1 and the third cooking battery 60a3. The sum of the first time interval and the second time interval coincides exactly with the period duration Tsc. In the operating state, the control unit 38a keeps the total output power of the second heating units 12a2 activated at all times essentially constant (see Figure 3).

Figure 4 shows another cooking battery configuration. In the case of the cooking battery configuration shown in Figure 4, in the operating state a first cooking battery 60a1 is partially supported on the first partial cooking surface area 16a and partially on the second partial surface area of cooking 18a. In the operating state, a first partial cooking battery area 62a1 of the first cooking battery 60a1 is supported on the first partial cooking surface area 16a and a second partial cooking battery area 64a1 of the first cooking battery 60a1 is supported on the second partial cooking surface area 18a. A second firing battery 60a2 is fully supported on the first partial cooking surface area 16a in the operating state. A third firing battery 60a3 is fully supported on the first partial cooking surface area 16a in the operating state. A fourth firing battery 60a4 is fully supported on the second partial cooking surface area 18a in the operating state.

In the case of the cooking battery configuration shown in FIG. 4, the control unit 38a operates in the first operating time period T ^{sc during} the first time interval 12 ^sc which is assigned to the cooking battery 60a supported on the first partial cooking surface area 16a, namely, the first partial cooking battery area 62a1, on the second cooking battery 60a2 and the third cooking battery 60a3, with essentially the same frequency (see Figure 5). In a second time interval of the period duration T ^sc , the control unit 38a operates in the operating state the first heating units 12a1 that are assigned to the cooking battery 60a supported on the first partial cooking surface area 16a, in particular, the first partial cooking battery area 62a1, the second cooking battery 60a2 and the third cooking battery 60a3, with frequencies that differ by at least 17 kHz. In a third time interval of the period duration T ^SC , the control unit 38a operates in the operating state the first heating units 12a1 that are assigned to the second cooking battery 60a2 and the third cooking battery 60a3, with frequencies that differ by at least 17 kHz. The sum of the first time interval, the second time interval and the third time interval exactly coincides with the duration of the TSC period. In the operating state, the control unit 38a keeps the total output power of the first heating units 12a1 activated at all times essentially constant (see Figure 6).

In the case of the cooking battery configuration shown in FIG. 4, the control unit 38a operates the second heating units 12a2 that are assigned to the operating state in a first time interval of the period duration T ^sc. the fourth cooking battery 60a4 supported in the second partial cooking surface area 18a with a certain frequency, and deactivates the second heating units 12a2 that are assigned to the second partial cooking battery area 64a1 supported in the second partial area of cooking surface 18a (see figure 5). In a second time interval of the period duration T ^sc , the control unit 38a operates in the operating state with a certain frequency the second heating units 12a2 that are assigned to the second partial cooking battery area 64a1 supported by the second partial cooking surface area 18a, and deactivates the second heating units 12a2 that are assigned to the fourth cooking battery 60a4 supported on the second partial cooking surface area 18a. The sum of the first time interval and the second time interval coincides exactly with the period duration T ^sc . In the operating state, the control unit 38a keeps the total output power of the second heating units 12a2 activated at all times essentially constant (see Figure 6).

Figure 7 shows another cooking battery configuration. In the case of the cooking battery configuration shown in Figure 7, in the operating state a first cooking battery 60a1 is partially supported by the first partial area of cooking surface 16a and partially in the second partial cooking surface area 18a. In the operating state, a first partial cooking battery area 62a1 of the first cooking battery 601 is supported on the first partial cooking surface area 16a and a second partial cooking battery area 64a1 of the first cooking battery 60a1 is supported on the second partial cooking surface area 18a. A second firing battery 60a2 is fully supported on the first partial cooking surface area 16a in the operating state. A third firing battery 60a3 is fully supported on the first partial cooking surface area 16a in the operating state. A fourth firing battery 60a4 is fully supported on the second partial cooking surface area 18a in the operating state. A fifth firing battery 60a5 is fully supported on the second partial cooking surface area 18a in the operating state.

In the case of the cooking battery configuration shown in FIG. 7, the control unit 38a operates the first heating units 12a1 that are assigned to the operating state in a first time interval of the period duration Tsc. cooking battery 60a supported on the first partial cooking surface area 16a, namely, the first partial cooking battery area 62a1, the second cooking battery 60a2 and the third cooking battery 60a3, with essentially the same frequency (see figure 8). In a second time interval of the period duration Tsc, the control unit 38a operates in the operating state the first heating units 12a1 that are assigned to the second cooking battery 60a2 and the third cooking battery 60a3 with frequencies that they differ by at least 17 kHz, and deactivates the first heating units 12a1 that are assigned to the first partial cooking battery area 62a1. In a third time interval of the period duration T ^SC , the control unit 38a operates in the operating state the first heating units 12a1 that are assigned to the second cooking battery 60a2 and the third cooking battery 60a3 with frequencies which differ by at least 17 kHz, and deactivates the first heating units 12a1 that are assigned to the first partial cooking battery area 62a1. The sum of the first time interval, the second time interval and the third time interval exactly coincides with the duration of period T ^SC . In the operating state, the control unit 38a keeps the total output power of the first heating units 12a1 activated at all times essentially constant (see Figure 9).

In the case of the cooking battery configuration shown in Figure 7, the control unit 38a operates in the operating state in a first time interval of The duration of period Tsc is the second heating units 12a2 that are assigned to the fourth cooking battery 60a4 and the fifth cooking battery 60a5 with frequencies that differ by at least 17 kHz, and deactivates the second heating units 12a2 that are assigned to the second partial cooking battery area 64a1 (see figure 8). In a second time interval of the period duration Tsc, the control unit 38a operates in the operating state with a certain frequency the second heating units 12a2 that are assigned to the fourth firing battery 60a4, and deactivates the second units heating 12a2 that are assigned to the fifth cooking battery 60a5 and the second partial cooking battery area 64a1. In a third time interval of the period duration T ^sc , the control unit 38a operates in the operating state the second heating units 12a2 that are assigned to the second partial cooking battery area 64a1 and the fifth cooking battery 60a5 with frequencies that differ by at least 17 kHz, and deactivates the second heating units 12a2 that are assigned to the fourth firing battery 60a4. The sum of the first time interval, the second time interval and the third time interval exactly matches the period duration Tsc. In the operating state, the control unit 38a keeps the total output power of the second heating units 12a2 activated at all times essentially constant (see Figure 9).

The configuration represented in figure 10 corresponds to the cooking battery configuration represented in figure 4, so that at this point it refers to the description made previously. Next, it is assumed that it is impossible to keep constant the total output powers of the heating units 12a defining the partial cooking surface areas 16a, 18a and simultaneously heating the cooking batteries 60a with predetermined theoretical heating powers for the battery of cooking 60a respective. In the event that it is impossible to keep the total output powers of the heating units 12a defining the partial cooking surface areas 16a, 18a constant by simultaneously heating the cooking batteries 60a with the predetermined theoretical heating power for the battery of corresponding cooking 60a, the control unit 38a prioritizes the heating of the cooking batteries 60a with the predetermined theoretical heating power for the corresponding cooking battery 60a (see Figure 12).

In the case of the cooking battery configuration shown in FIG. 10, the control unit 38a operates the first heating units 12a1 that are in the operating state in a first time interval of the period duration Tsc assigned to the cooking battery 60a supported on the first partial cooking surface area 16a, namely, the first partial cooking battery area 62a1, the second cooking battery 60a2 and the third cooking battery 60a3, with essentially the same frequency (see figure 11). In a second time interval of the period duration T ^sc , the control unit 38a operates in the operating state the first heating units 12a1 that are assigned to the cooking battery 60a supported on the first partial cooking surface area 16a, in particular, the first partial cooking battery area 62a1, the second cooking battery 60a2 and the third cooking battery 60a3, with frequencies that differ by at least 17 kHz. In a third time interval of the period duration T ^SC which is called the overlapping time interval, the control unit 38a operates in the operating state with essentially the same frequency the first heating units 12a1 that are assigned to the battery of cooking 60a supported on the first partial cooking surface area 16a, namely, the first partial cooking battery area 62a1, the second cooking battery 60a2 and the third cooking battery 60a3, and the second heating units 12a2 that are assigned to the cooking battery 60a supported on the second partial cooking surface area 18a, namely, the second partial cooking battery area 64a1 and the fourth cooking battery 60a4. In a fourth time interval of the period duration T ^SC , the control unit 38a operates in the operating state the first heating units 12a1 that are assigned to the second cooking battery 60a2 and the third cooking battery 60a3 with frequencies which differ by at least 17 kHz. The sum of the first time interval, the second time interval, the third time interval and the fourth time interval exactly coincides with the duration of period T ^SC . In the overlapping time interval, the total output power of the first heating units 12a1 activated is less than the total output power of the first heating units 12a1 activated in the remaining time intervals of the period duration Tsc ( see figure 12).

In the case of the cooking battery configuration shown in Figure 10, the control unit 38a operates the second heating units 12a2 that are assigned to the operating state in a first time interval of the period duration Tsc. fourth cooking battery 60a4 supported in the second partial cooking surface area 18a with a certain frequency, and deactivates the second heating units 12a2 that are assigned to the second partial cooking battery area 64a1 supported in the second partial surface area of cooking 18a (see figure 11). A second time interval corresponds to the time interval of overlap, so at this point it refers to the description made above. In a third time interval of the period duration T ^sc , the control unit 38a operates in the operating state with a certain frequency the second heating units 12a2 that are assigned to the second partial cooking battery area 64a1, and deactivates the second heating units 12a2 that are assigned to the fourth cooking battery 60a4. The sum of the first time interval, the second time interval and the third time interval exactly coincides with the duration of period T ^SC . In the overlapping time interval, the total output power of the second heating units 12a2 activated is less than the total output power of the second heating units 12a2 activated in the remaining time intervals of the period duration T ^sc (see figure 12).

Alternatively, the control unit 38a could operate in the operating state, for example, in the overlapping time interval, with frequencies that could be differentiated by at least 17 kHz the first heating units 12a that are assigned to the battery of cooking 60 supported by the first partial cooking surface area 16a, in particular, the first partial cooking battery area 62a1, the second cooking battery 60a2, and the third cooking battery 60a3, and the second cooking units heating 12a2 that are assigned to the cooking battery 60a supported on the second partial cooking surface area 18a, namely, the second partial cooking battery area 64a1 and the fourth cooking battery 60a4.

In a procedure for putting the cooking field device 10a into operation, in the operating state in which at least part of a cooking battery 60a is supported in each of the partial cooking surface areas 16a, 18a , the total output power of the first heating units 12a1 of the heating units 12a, which define the first partial area of cooking surface 16a, and the total output power of the second heating units 12a2 of the heating units 12a, which define the second partial cooking surface area 18a, are kept at all times essentially constant.

In Figures 13 to 15, another embodiment of the invention is shown. The following descriptions are essentially limited to the differences between the examples of embodiment, where, in relation to components, characteristics and functions that remain the same, reference can be made to the description of the example of embodiment of Figures 1 to 12. For the differentiation of In the exemplary embodiments, the letter "a" of the reference symbols of the embodiment of Figures 1 to 12 has been replaced by the letter "b" in the reference symbols of the embodiment example of figures 13 to 15. In relation to components indicated in the same way, in particular, in terms of components with the same reference symbols, it is also possible to refer basically to the drawings and / or the description of the embodiment of figures 1 to 12.

Figure 13 shows a cooking field 40b, which is realized as an induction cooking field, with a cooking field device 10b, which is realized as an induction cooking device.

The heating units 12b of the cooking field device 10b define a variable area of cooking surface 14b. In this exemplary embodiment, the variable cooking surface area 14b has a first fixedly defined partial cooking surface area 16b, a second fixedly defined cooking surface area 18b, and a third partial surface area of cooking 20b defined in a fixed way. The first partial cooking surface area 16b, the second partial cooking surface area 18b and the third partial cooking surface area 20b are arranged adjacent to each other and partially adjoin one another in the transverse direction 46b.

The first heating units 12b1 of the heating units 12b define the first partial cooking surface area 16b fixedly defined. The first heating units 12b1 of the heating units 12b defining the first partial cooking surface area 16b are connected in the operating state to a first phase of the mains current voltage 48b.

The second heating units 12b2 of the heating units 12b define the second partial cooking surface area 18b defined in a fixed manner. The second heating units 12b2 of the heating units 12b defining the second partial cooking surface area 18b are connected in the operating state to a second phase of the mains current voltage 50b, other than the first phase of the mains current voltage 48b.

The third heating units 12b3 of the heating units 12b define the third fixed cooking surface area 20b defined in a fixed manner. The third heating units 12b3 of the heating units 12b defining the third partial cooking surface area 20b are connected in the operating state to a third phase of the mains current voltage 52b, other than the first phase of the mains current voltage 48b and the second phase of the mains current voltage 50b.

In the operating state, at least part of a cooking battery 60b is supported in each of the partial cooking surface areas 16b, 18b, 20b. In the case of a cooking battery configuration shown in FIG. 13, in the operating state a first cooking battery 60b1 is partially supported on the first partial cooking surface area 16b, partially on the second partial surface area of cooking 18b, and partially in the third partial area of cooking surface 20b. In the operating state, a first partial cooking battery area 62b1 of the first cooking battery 60b1 is supported on the first partial cooking surface area 16b, a second partial cooking battery area 64b1 of the first cooking battery 60b1 is supported on the second partial cooking surface area 18b, and a third partial cooking battery area 66b1 of the first cooking battery 60b1 is supported on the third partial cooking surface area 20b. In the operating state, a second cooking battery 60b2 is fully supported on the first partial cooking surface area 16b, a third cooking battery 60b3 is fully supported on the second partial cooking surface area 18b, and a fourth cooking battery 60b4 is fully supported on the third partial cooking surface area 20b.

In the operating state, the control unit 38b operates without temporary overlaps the first heating units 12b1 that heat the first partial cooking battery area 62b1, the second heating units 12b2 that heat the second partial cooking battery area 64b1 , and the third heating units 12b3 that heat the third partial cooking battery area 66b1 (see Figure 14). In the operating state, the control unit 38b drives within the range of a single period duration T ^sc the first heating units 12b1 that heat the first partial cooking battery area 62b1, the second heating units 12b2 that heat the second partial cooking battery area 64b1, and the third heating units 12b3 that heat the third partial cooking battery area 66b1. In the example shown, the sum of the activation time t ^{on, ci} of the first heating units 12b1 that heat the first partial cooking battery area 62b1, the activation time t ^{on, c ii} of the second heating units 12b2 that heat the second partial cooking battery area 64b1, and the activation time t ^{on, c iii} of the third heating units 12b3 that heat the third partial cooking battery area 66b1 is less than the period duration T ^sc .

In the case of the cooking battery configuration shown in Figure 13, the control unit 38b operates in the first operating time period T ^{sc during} the first time interval 12 ^sc which is assigned to the first partial cooking battery area 62b1 with a certain frequency, and deactivates the first heating units 12b1 that are assigned to the second cooking battery 60b2 (see Figure 14). In a second time interval of the period duration T ^SC , the control unit 38b operates in the operating state the first heating units 12b1 that are assigned to the second firing battery 60b2 with a certain frequency, and deactivates the first heating units 12b1 that are assigned to the first partial cooking battery area 62b1 supported on the first partial cooking surface area 16b. The sum of the first time interval and the second time interval coincides exactly with the period duration T ^sc . In the operating state, the control unit 38b keeps at all times essentially the total output power of the first heating units 12b1 activated (see Figure 15).

In the case of the cooking battery configuration shown in Figure 13, the control unit 38b operates in the operating state in a first time interval of the period duration T ^SC and in a third time interval of the duration of period T ^SC the second heating units 12b2 that are assigned to the third cooking battery 60b3 with a certain frequency, and deactivates the second heating units 12b2 that are assigned to the second partial cooking battery area 62b1 (see Figure 14). In a second time interval of the period duration T ^sc , the control unit 38b operates in the operating state the first heating units 12b1 that are assigned to the second partial cooking battery area 64b1 with a determined frequency, and deactivates the first heating units 12b1 that are assigned to the third firing battery 60b3. The sum of the first time interval and the second time interval coincides exactly with the period duration T ^sc . In the operating state, the control unit 38b keeps the total output power of the second heating units 12b2 activated essentially constant at all times (see Figure 15).

In the case of the cooking battery configuration shown in FIG. 13, the control unit 38b operates in the first operating period of the period duration T ^sc the third heating units 12b3 that are assigned to the fourth firing battery 60b4 with a certain frequency, and deactivates the third heating units 12b3 that are assigned to the third partial area of cooking battery 66b1 (see figure 14). In a second time interval of the period duration T ^sc , the control unit 38b operates in the operating state the third heating units 12b3 that are assigned to the third partial cooking battery area 66b1 with a certain frequency, and deactivates the third heating units 12b3 that are assigned to the fourth firing battery 60b4. The sum of the first time interval and the second time interval coincides exactly with the duration of the ^tsc period ^. In the operating state, the control unit 38b keeps the total output power of the third heating units 12b3 activated at all times essentially constant (see Figure 15).

Reference symbols

Cooking Field Device

Heating unit

Variable cooking surface area

First partial cooking surface area Second partial cooking surface area Third partial cooking surface area Control unit

Cooking field

Support plaque

User interface

Cross direction

First phase of the mains current voltage Second phase of the mains current voltage Third phase of the mains current voltage Cooking battery

First partial cooking battery area Second partial cooking battery area Third partial cooking battery area

Claims (12)

1. Cooking field device, in particular, induction cooking field device, with multiple heating units (12a-b) defining at least one variable cooking surface area (14a-b), which presents the at least a first part of the cooking surface (16a-b) defined in a fixed way and at least a second part of the cooking surface (18a-b) defined in a fixed way, characterized by at least one control unit (38a- b), which at all times keeps at least essentially constant the total output power of the first heating units (12a1-b1) of the heating units (12a-b), which define the first partial cooking surface area (16a-b), and the total output power of the second heating units (12a2-b2) of the heating units (12a-b), which define the second partial cooking surface area (18a-b), in at least one operating state in which in ca one of the partial cooking surface areas (16a-b, 18a-b) is supported at least a part of a cooking battery (60a-b). 2. Cooking field device according to claim 1, characterized in that , in the operating state, at least a large part of the first heating units (12a1-b1) are connected to a first phase of the mains current voltage (48a-b) and at least a large part of the second heating units (12a2-b2) are connected to a second phase of the mains current voltage (50a-b) other than the first phase of the voltage of the mains current (48a-b). 3. Cooking field device according to claim 2, characterized in that , in the operating state, the first total output power adopts at most the value of the maximum power supplied by the first phase of the mains current voltage (48a-b). 4. Cooking field device according to one of the preceding claims, characterized in that , in the operating state, at least a first partial cooking battery area (62a-b) of the cooking battery (60a-b) is supported on the first partial cooking surface area (16a-b) and at least a second partial cooking battery area (64a-b) of the cooking battery (60a-b) is supported on the second partial surface area cooking (18a-b). 5. Cooking field device according to claim 4, characterized in that , in the operating state, the control unit (38a-b) operates without temporary overlaps the first heating units (12a1-b1) that heat the first partial area of the cooking battery (62a-b) and the second heating units (12a2-b2) that heat the second partial area of the cooking battery (64a-b). 6. Cooking field device according to claims 4 or 5, characterized in that , in the operating state, the sum of the activation time of the first heating units (12a1-b1) that heat the first partial cooking battery area (62a-b) and the activation time of the second heating units (12a2-b2) that heat the second partial cooking battery area (64a-b) corresponds at most to the duration of a period. 7. Cooking field device according to one of claims 4 to 6, characterized in that the variable cooking surface area (14b) has at least a third part of the fixed cooking surface (20b) defined in a fixed manner, in which at least a third partial cooking battery area (66b) of the cooking battery (60b) is supported in the operating state. 8. Cooking field device according to at least claims 2 and 7, characterized in that , in the operating state, at least a large part of the third heating units (12b3) of the heating units (12b) defining the third partial cooking surface area (20b) is connected to a third phase of the mains current voltage (52b). 9. Cooking field device according to one of the preceding claims, characterized in that , in the operating state, the control unit (38a-b) drives the first heating units (12a1-b1) and the second heating units (12a2-b2) avoiding intermodulation hum. 10. Cooking field device according to one of the preceding claims, characterized in that , in the event that it is impossible to keep constant the total output powers of the heating units (12a-b) defining the partial surface areas of cooking (16a-b, 18a-b, 20a-b) by simultaneously heating the cooking battery (60a-b) with a predetermined theoretical heating power for the cooking battery (60a-b), the control unit (38a-b) is intended to prioritize the heating of the cooking battery ( 60a-b) with the default theoretical heating power for the cooking battery (60a-b). 11. Cooking field, in particular induction cooking field, with at least one cooking field device (10a-b) according to one of the claims set forth above. 12. Procedure for putting into operation a cooking field device (10a-b) according to one of claims 1 to 10 with multiple heating units (12a-b) defining at least one variable area of cooking surface ( 14a-b), which has at least a first fixed cooking surface area (16a-b) defined in a fixed manner and at least a second fixed cooking surface area (18a-b) defined in a fixed manner, characterized in that the total output power of the first heating units (12a1-b1) of the heating units (12a-b), which define the first partial cooking surface area (16a-b), and the total output power of the second heating units (12a2-b2) of the heating units (12a-b), which define the second partial cooking surface area (18a-b), are kept at all times at least essentially constant at least one operating state in which in ca one of the partial cooking surface areas (16a-b, 18a-b) is supported at least a part of a cooking battery (60a-b).