Classifications

• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B6/00—Heating by electric, magnetic or electromagnetic fields
  • H05B6/02—Induction heating
  • H05B6/06—Control, e.g. of temperature, of power
  • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B6/00—Heating by electric, magnetic or electromagnetic fields
  • H05B6/02—Induction heating
  • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
  • H05B6/12—Cooking devices
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B3/00—Ohmic-resistance heating
  • H05B3/68—Heating arrangements specially adapted for cooking plates or analogous hot-plates
  • H05B3/74—Non-metallic plates, e.g. vitroceramic, ceramic or glassceramic hobs, also including power or control circuits
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
  • H05B2213/03—Heating plates made out of a matrix of heating elements that can define heating areas adapted to cookware randomly placed on the heating plate
• • H—ELECTRICITY
  • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
  • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
  • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
  • H05B2213/05—Heating plates with pan detection means

Definitions

• the invention is based on a cooking device with a group of heating units according to the preamble of claim 1. Furthermore, the invention proceeds from a method with a cooking device according to the preamble of claim 10.
• a cooking apparatus comprising a cooking plate for laying a cooking utensil and a group of induction coils that straddles a contiguous cooking area of the hotplate.
• the heating of the preparation harness is carried out by means of a heating group of induction coils, which is formed depending on a selection position of the preparation dishes in the cooking area.
• This heating group can receive from a user a heating operating parameter, such as a power level.
• the object of the invention is in particular to provide a generic device with improved properties in terms of ease of use.
• the invention is based on a cooking device with a group of heating units, a heating group formation unit, which is intended to form a first heating group of heating units adapted to a first selection position of a cooking utensil, and an allocation device, which is provided, of the first heating group to assign at least one heating operation parameter.
• the allocation device retains the heating operation parameter for a heating operation of a second heating group adapted to the second selection position.
• Maintaining the heating mode parameter Ters is particularly advantageous in connection with pushing the preparation tableware, since this type of movement typically corresponds to the will of an operator to continue a heating operation started in the selection position unchanged in the second selection position. If the heating operating parameter is designed as a parameter that can be selected by an operator, such as a power level, heating time, etc., a re-inputting of the heating operating parameter by the operator can be avoided after pushing the preparation utensil.
• the heating operating parameter is embodied as a device-internal parameter, for example as a ratio between powers which are to be output by different heating units, a renewed determination of this characteristic can advantageously be avoided.
• the heating operating parameter is preferably maintained during the sliding movement for later assignment to the second heating group, for example in a storage unit.
• allocating a heating operating parameter is meant, in particular, the assignment of a specific value of the heating operating parameter.
• “Maintaining" the heating operating parameter should be understood as meaning, in particular, maintaining the value of the heating operating parameter.
• a "pushing" of the preparation dishes is to be understood in particular as moving the preparation dishes, in which a contact with a body supporting the preparation dishes, in particular a cooking plate, is maintained.
• a "heating unit” is to be understood as meaning, in particular, a unit which is provided for transmitting heat energy to a preparation tableware, for which purpose the heating unit has at least one heating body, which is designed, for example, as an inductive heating means or as a radiation body At least one power unit is provided, which supplies this heating unit for transmitting the heating energy with electrical power in a heating unit operation of the heating unit.
• this power unit may be designed, for example, as an inverter.
• a "selection position” is to be understood, in particular, as meaning a position of the preparation utensil which can be arbitrarily selected by an operator within a continuous cooking area for heating a preparation utensil.
• a portion of the cooking device are understood, which is suitable for a cooking operation of the cooking utensil.
• the cooking area preferably corresponds to a portion of a cooking plate of the cooking device that is understretched by the entire group of heating units.
• the cooking area coherently constitutes a substantial part, in particular more than 50%, advantageously more than 75% and preferably more than 90% of the total surface the cooking plate, which is suitable for a cooking operation, whereby a particularly high flexibility in the choice of a cooking position of the preparation crockery can be achieved.
• the group of heating units preferably has at least 10, advantageously at least 20 and preferably at least 40 heating units.
• the heating group formation unit is provided in particular for forming the heating group of heating units for heating the preparation tableware in a selection position of the preparation tableware in the cooking area.
• a position of the cooking utensil "in the cooking area" is to be understood in particular to mean a position of the cooking utensil relative to the cooking area in which the cooking utensil floor is arranged completely in the cooking area.
• heating group is to be understood as meaning, in particular, a set of heating units which is prepared for a heating operation for heating the preparation harness in that a set for controlling these heating units is assigned to the set of heating units.
• the allocation device automatically assigns the heating operating parameter of the second heating group in at least one operating mode.
• the heating operating parameter is assigned with the same value.
• the cooking device has a unit which is provided to a heating operation for heating the Preparation dishes to be carried out automatically after its sliding with the Schufeldparameter.
• the unit serves to automatically continue a heating operation started in the first selection position by means of the first heating group with the heating operating parameter in the second selection position by means of the second heating group with the unchanged heating operating parameter. This can be achieved after the sliding movement, an automatic continuation of the heating operation, without further action of the operator is necessary.
• the cooking device has an input unit, wherein the assignment device is provided in cooperation with the input unit, in at least one operating mode when lifting the cooking utensil to a new selection position, the heating operating parameter of a adapted to the new selection position heating group based on an input signal to assign to the input unit.
• the new election position may correspond to the second election position or another election position.
• the ease of use may be increased if the cooking device has a unit of time intended to maintain the heating group for a period of time when the heating element is uncovered.
• a cooking utensil can be removed from a cooking plate, wherein the heating group, which is revealed by the removal of the cooking utensil, is maintained for this period of time.
• the period of time is preferably at least one minute.
• Heating group form to be understood to this set of heating units.
• the period of time preferably pays off from the time at which the heating group is uncovered, ie the beginning of the uncovered state of the heating group.
• An "uncovered" state of a heating group should in particular be understood as a state in which the area a cooking plate, which is understretched by the heating units of the heating group, is free of objects.
• the uncovered heating group may be the first, the second or another formed heating group.
• the allocation device in cooperation with the time unit is provided to maintain the allocation of the heating operation parameter to the uncovered heating group for a time interval, whereby a before the removal of the cooking utensil with the heating operation parameter started heating operation after re-installation of the cooking utensil
• the unchanged heating operating parameter can be continued without the heating operating parameter having to be entered or determined again.
• the time interval which preferably counts from the time the heating group is uncovered, is made smaller than the period of time during which the uncovered heating group is maintained, or it may correspond to this time period.
• the cooking device has a time unit which is intended to trigger a heating group in a non-driven state after a period of time.
• the heating group is triggered, preferably the allocation of a means for controlling the heating units forming the heating group to the heating group is triggered, and a storage space occupied for the heating group in a storage unit is advantageously automatically released.
• the period of time preferably pays off from the time of formation of the heating group.
• the unpressurised heating group can be the first, the second or another heating group formed.
• the heating group formation unit is provided to assign a cover detection operation to at least one further heating unit to a heating unit exposed due to the sliding, whereby a new heating group adapted to the displaced position of the preparation equipment can be formed quickly.
• This formation may be further performed without requiring a cover detection process of the entire group of heating units when the at least one further heating unit is a heating unit adjacent to an existing heating group.
• the exposed heating unit and the at least one further heating unit are relative to the center of the existing heating group on both sides of the existing heating group arranged, whereby a targeted adapted to the movement of the cooking utensils and thereby efficient cover detection process can be achieved.
• an "existing" heating group is, in particular, a set of heating units designated as being covered by the preparation tableware at the time of the cover detection process in a storage unit.
• the invention is based on a method with a cooking device which has a group of heating units in which a first heating group adapted to a first selection position of a preparation table is formed by heating units and at least one heating operating parameter is assigned to the first heating group.
• the heating operating parameter is automatically assigned to a second heating group adapted to the second selection position, whereby increased comfort can be achieved when using the cooking appliance.
• the heating operating parameter of a heating group adapted to the new selected position is assigned on the basis of an input by an operator, whereby a high degree of application flexibility can additionally be achieved.
• 1 shows an induction hob with a group of heating units and a preparation tableware in a first selection position in a front view
• 2 shows an internal arrangement of the induction hob with the assignment of a Walker remplisparameters to a heating group formed for heating the cooking utensil
• FIG. 4 shows the arrangement from FIG. 2 with the automatic assignment of the heating operating parameter to a further heating group for heating the preparation utensil after it has been pushed into a second selection position
• FIG. 5 the lifting of the preparation utensil into a third optional position
• FIG. 6 shows the arrangement from FIG. 2 with an allocation of the heating operating parameter to a further heating group for heating the preparation utensil after its lifting into the third selection position on request of the operator.
• FIG. 1 shows a cooking device 10 in the form of an induction hob in a view from above.
• the cooking apparatus 10 includes a mounting frame 12 for attachment to a countertop, a cook top 14 for placing cookware, and a control panel 16 for starting, stopping, and adjusting a cooking operation.
• the control panel 16 has an input unit 18, which is designed, for example, as a touch panel, and an output unit 19, which is designed, for example, as an LED and / or LCD display.
• the cooking plate 14 is bounded by the mounting frame 12 and the control panel 16.
• P 1 designed as a pot preparation dishes 20 is arranged, wherein the bottom of the pot is shown schematically by a solid circle.
• the designation of the selection position P 1 of the preparation tableware 20 refers to the arrangement of the center of the bottom of the preparation tableware 20 on the cooking plate 14.
• the entire group of heating units 22 of the cooking device 10 is arranged in a matrix arrangement. In this example, the array has six rows and eight columns. Further embodiments of the matrix arrangement with further combinations of row and column numbers are conceivable.
• the cooking apparatus 10 is provided with a group of heating units 22. These each comprise an induction coil designed as heating means 24, which in FIG 1 is shown schematically by a dashed rectangle. In an operation of a heating unit 22 is formed by the heating means 24 designed as a magnetic alternating field heating signal which has a heating frequency, for example, is 25 kHz.
• the heating signal induces electrical currents in the metallic bottom of the preparation dish 20. These electrical currents heat a food located in the preparation dish 20.
• a heating means 24 in operation of the corresponding heating unit 22 is supplied to generate the heating signal with an alternating electrical current, which oscillates with the heating frequency.
• the cooking appliance 10 is provided with power units (not shown) designed as inverters.
• FIG. 1 shows schematically an internal arrangement of the cooking device 10.
• the preparation utensil 20 is placed by the operator on the hotplate 14 in the optional position P 1 freely chosen by him.
• the entire surface of the cooking plate 14 forms a contiguous cooking area, which is understressed by the entire group of heating units 22 and is therefore suitable for heating the cooking utensil 20.
• a cover detection process of the entire group of heating units 22 is initiated by a heating group formation unit 28, in which it is examined by means of a sensor means for each heating unit 22 whether the corresponding heating means 24 is covered by the preparation tableware 20.
• a heating group 32 is formed by means of the heating group formation unit 28.
• the heating group 32 is formed from the set 30 of heating units 22 covered by the preparation tableware 20 by assigning to this set 30 a heating group control unit 34 which serves to control a common heating operation of the set 30 of heating units. This assignment is shown schematically in the figure by means of a dashed line.
• the heating group control unit 34 is further associated with a memory unit 36, in which the positions (x "y,) of the covered heating units 22 of the set 30 are registered in the matrix arrangement.
• the heating unit control unit 34 selectively operates the registered heating units 22, while the remaining heating units 22 remain idle.
• the heating group control unit 34 may be formed by a unit which is assigned to the entire group of heating units 22. In a further embodiment can the entire group of heating units 22 may be divided into subgroups, with a different control unit being provided for each subgroup. In this case, a control unit that assumes the role of the heating group control unit 34 can be selected from among these control units.
• the heating group formation unit 28 and the heating group control unit 34 preferably have at least one microprocessor.
• the heating group control unit 34 may further be formed at least partially integral with the heating group formation unit 28.
• the storage space provided in the storage unit 36 for the heating group 32 corresponds to a virtual cooking zone of the cooking appliance 10.
• This virtual cooking zone may be viewed by the operator via the control panel 16 as a conventional cooking zone of a cooking appliance with predefined cooking areas.
• the dispensing unit 19 the cooking zone and its position in the cooking plate 14 can be displayed and it can be switched on and off by means of the input unit 18.
• heating operating parameters for the heating group 32 can be entered. For example, by means of the input unit 18 in cooperation with the allocation device 38, one or more heating operation parameters from the group power level, maximum heating time, delay time for an automatic start of a heating operation, activation of a " Booster mode ", etc.
• the heating group 32 are assigned based on an input signal to the virtual cooking zone input unit 18, ie, the heating group 32. For example, it is assumed that the operator inputting a heating operation parameter L for the heating operation of the preparing utensil 20 by means of the input unit 18. This is picked up by the allocation device 38 and assigned to the heating group 32. This assignment is shown schematically by means of a dashed line, in which case the allocation device 38 sets the heating operation parameter L for the heating group 32 responsible Schumannmaschinemaschine 34 available. In this case, for example, the value of the heating operation parameter L can be recorded in a storage unit 40 of the allocation device 38, wherein the heating group control unit 34 can access this storage unit 40.
• the value of the heating operation parameter L may be transmitted to the heating group control unit 34 and / or stored in the storage unit 36.
• the memory units 36, 40 may also be formed at least identically to each other.
• the operator can then start a heating operation of the heating group 32.
• the heating operation is carried out in a known manner with the desired power level designed as the heating operation parameter L by means of the generation of an alternating magnetic field by the heating means 24 of the heating group 32. If the heating operation is stopped in one step, for example by the operator via the control panel 16 or automatically after a preset heating time, the heating group 32 is triggered by deleting the assignment of the heating group control unit 34 to the set 30 of heating units 22 and the entries of the virtual cooking zone be deleted accordingly in the storage unit 36.
• the heating group 32 In a first application situation, it is assumed that after starting the heating operation of the heating group 32, the operator removes the preparation utensil 20 from the cooking plate 14, for example to place it on the worktop. In this case, the heating group 32 is in an uncovered state. After the removal of the cooking utensil 20, ie, from the uncovering of the respective heating units 22, the heating group 32 is maintained for a predetermined period of time T by maintaining the assignment of the heating group control unit 34 to the set 30 of heating units 22. Further, the heating operation parameter L is also maintained for the time period T.
• the preparation dishware 20 or another preparation tableware is placed in the position P 1 by the operator, this is registered by the heating group formation unit 28 and the heating operation with the heating operation parameter L started before the removal of the preparation tableware 20 is automatically continued without the operator having this heating operation parameter L must enter again.
• the heating group 32 remains in the uncovered state during the entire time period T, the heating group 32 is automatically triggered.
• a time unit 42 is provided, which serves to maintain the uncovered heating group 32 for the time period T, and deletes the assignment of the heating group control unit 34 to the set 30 of heating units 22 at the end of the time period T.
• This time unit 42 is in this case formed by a time counter 44 and by the heating group formation unit 28, which triggers the assignment of the heating group control unit 34 to the set 30 on the expiration of the time period T on the basis of a signal of the time counter 44. Accordingly, the entries of the virtual cooking zone in the storage unit 36 are cleared.
• the allocation device 38 in cooperation with the time unit 42, maintains the assignment of the heating operation parameter L to the uncovered heating group 32 for a time interval corresponding to the time duration T.
• the time period T expires, for example, the allocation device 38 uses a signal of the time unit 42, the entry of the heating operation parameter L in the memory unit 40 is deleted.
• the time duration T is 90 s in the example considered.
• the heating group formation unit 28 initiates a cover detection operation of the further heating units 22c, 22d, 22e on the basis of the positions of the uncovered heating units 22a, 22b.
• This cover detection process is carried out selectively in a range in which the arrangement of the shifted preparation harness 20 is to be expected.
• the examined heating units 22c, 22d, 22e adjoin the original heating group 32 and are arranged with respect to the selection position P 1 of the preparation harness 20 with respect to the uncovered heating units 22a, 22b.
• the exposed heating units 22a, 22b, on the one hand, and the examined heating units 22c, 22d, 22e, on the other hand are arranged on both sides of the existing heating group 32.
• a current update of the composition of a heating group can be performed quickly without having to initiate a cover detection process of the entire group of heating units 22.
• the positions of the currently covered heating units 22 are continuously updated in the storage unit 36.
• the selection position P 2 of the preparation harness 20 shown in FIG. 1 a set 46 of heating units 22 is covered.
• the value of the heating operation parameter L is maintained by the allocating device 38. In this case, the value of the heating operation parameter L remains stored in the memory unit 40. If the second selection position P 2 is reached, it is registered by the heating group formation unit 28 that no changes in the coverage state of the heating units 22 take place.
• the set 46 of heating units 22 - and in particular the entries of the positions (x ', y',) of the heating units 22 of the set 46 in the storage unit 36 - thus forms a new, second heating group 48, by means of which a continuation of the means of the first Heating group 32 started heating operation can be performed. This is shown in FIG. The sentence 46 is unchanged
• Heat group control unit 34 assigned.
• a new heating group control unit 34 which is adapted to the new selection position P 2 , is selected.
• the heating operation parameter L is automatically assigned to the heating group 48 by the allocation apparatus 38 by providing or transmitting the value of the heating operation parameter L of the heating group control unit 34.
• This automatic assignment takes place without inserting the operator.
• the heating of the second heating zone 48 is automatically started then, with the unchanged value of the Walker jossparameters L. In this case, heating of the preparation harness 20 is continued automatically, without any further action of the operator after moving the preparation harness 20 in the select position P 2 necessary is.
• the heating group control unit 34 in cooperation with the allocation device 38, which automatically maintains the value of the heating operation parameter L when pushed, forms a unit 49 serving to start a heating operation for heating the preparation harness 20 after it has been shifted to the second selection position P 2 of the same value of Edel remplisparameters L automatically perform.
• FIG. 5 illustrates the lifting of the preparation harness 20 in the first selection position P 1 by a lifting movement of the cooking plate 14 and sets it up in a further selection position P 3 .
• FIG. 6 illustrates the internal arrangement of the cooking apparatus 10 of FIG. 2 after lifting the preparation utensil 20. It is registered by the heating group formation unit 28 that all heating units 22 of the first heating group 32 in an uncovered State are. In this case, a covering detection process of the entire group of heating units 22 is initiated by the heating group formation unit 28 until the preparation tableware 20 set up in the selection position P 3 is detected.
• a new heating group 52 is formed by storing the positions (x "" y ",) of the heating units 22 of the set 50 in the storage unit 36 and a heating group control unit 54 for controlling the set 50 of heating units to this set 50 is assigned.
• the value of the heating operation parameter L in the storage unit 40 is maintained.
• the operator is requested by means of the output unit 19 to confirm the assignment of the heating operation parameter L to the new heating group 52.
• an input signal E of the input unit 18 is transmitted to the assignment device 38, which then uses this input signal E to assign the value of the heating operation parameter L to the heating group 52. As described above, this provides this value to the heating group control unit 54 or transmits the value to the heating group control unit 54. Alternatively, the operator can reject the assignment of the value of the heating operation parameter L, for example by setting a different value for the heating operation parameter L by means of the input unit 18 selects. This value is then assigned to the new heating group 52 by the allocator 38 as described above.

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• Physics & Mathematics (AREA)
• Electromagnetism (AREA)
• Chemical & Material Sciences (AREA)
• Engineering & Computer Science (AREA)
• Ceramic Engineering (AREA)
• Electric Stoves And Ranges (AREA)

Priority Applications (2)

Applications Claiming Priority (2)

Publications (1)

Family

ID=40280665

Family Applications (1)

Country Status (3)

Cited By (16)

Citations (5)

• 2007
  • 2007-10-17 ES ES200702821A patent/ES2329326B1/es not_active Withdrawn - After Issue
• 2008
  • 2008-09-19 ES ES08804476.3T patent/ES2544686T3/es active Active
  • 2008-09-19 WO PCT/EP2008/062544 patent/WO2009049989A1/de active Application Filing
  • 2008-09-19 EP EP08804476.3A patent/EP2204072B1/de active Active

Patent Citations (5)

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