EP1926940B1 - Ceramic hob - Google Patents

Description

The present invention relates to a hob, with a control device for controlling and / or regulating a temperature actual value of a heated by an associated heating Gargutbehältnisses, with at least one temperature sensor for detecting the respective actual temperature value of the Gargutbehältnissesund with at least one control element for setpoint temperature specification, which is associated with a stored in the control device first temperature setpoint.

Such a hob of a cooking appliance is known from the prior art. The well-known hob has a control device with which a temperature actual value depending on a z. B. preset by the operator temperature setpoint at the various heated areas of the hob plate is adjustable. The control device is also referred to as Bratsensorik or cooking sensor in the known hob. This sensor allows monitoring and control of the temperature at the heated areas of the hob plate for cooking food.

Out DE 199 03 300 A1 a device for operating an electric kitchen stove is known, being adjusted by means of individual cooking plates associated buttons setpoint temperatures.

Out DE 199 18 290 C1 a cooking appliance with an operating device is known, wherein the cooking appliance comprises a hob with heated cooking zones, which can each be operated with different operating conditions.

Usually, the hob plate consists of a glass ceramic. The control device has at least one temperature sensor or sensor, with which the actual temperature value can be detected at the respective heated area. The temperature sensor is arranged in the conventional hob usually below the hob plate and associated with the heated areas.

The control device can control a heating device associated with the heated area with the respectively detected actual temperature value as a function of a predetermined temperature setpoint value. Since the temperature sensor is not directly assigned to the bottom of the cooking vessel, an algorithm is used in the control of the actual temperature value, the one possible Determined temperature difference between the temperature at the bottom of Gargutbehältnisses and the temperature detected by the temperature sensor. The algorithm is stored in the control device, so that the determined temperature difference can be taken into account in the control. This algorithm has been determined by cooking experiments in which so-called Systemgarbehältnisses such. As a system pan or a system pot have been used.

In the known hob several controls can be provided, each having a certain cooking level, such as. B. minimum, medium and maximum, is assigned. Each cooking stage is assigned a specific temperature setpoint, which has also been determined by cooking tests using system food containers. The requirements of a healthy food preparation as well as the average wishes of the operators have been taken into account. By pressing one of the controls, the operator can select a particular cooking level to perform the cooking process according to the selected cooking level with the associated temperature setpoint.

When using other, non-system-bound Gargutbehältnissen a cooking process may not be performed satisfactorily at a selected cooking stage due to deviating from the system-bound Gargutbehältnissen heat conduction properties and forms of non-system-bound Gargutbehältnissen.

Accordingly, the present invention seeks to propose a hob of the type mentioned, with a cooking process with any kind of Gargutbehältnissen is satisfactorily feasible and special specifications of the operator can be considered.

This object is achieved by the features of claim 1. Advantageous developments emerge in particular from the dependent claims.

According to the invention, in a hob with a hob plate for a cooking appliance, a control device for controlling a temperature actual value can be provided at each heated area of the hob plate. With the control device, in each case a heater associated with a heated area can be activated so that a desired cooking of food in a food storage container is made possible. Furthermore, the hob according to the invention for each heated area may have a temperature sensor for detecting the actual temperature value to set the actual temperature value as a function of a setpoint input of the operator. For the setpoint specification multiple controls can be provided. Each control element can be assigned a specific temperature setpoint, which corresponds to a certain cooking level.

According to the invention, each control element can be assigned a plurality of temperature setpoint specifications. In this way, with the hob according to the invention an improved, more individualized temperature control can be carried out on the heated areas, regardless of whether system cooking containers, such as e.g. System pans and pots supplied with the hob are to be used by the operator.

In the hob according to the invention any number of controls for temperature control can be used, each of which several temperature setpoint specifications are assigned. Thus, an operator can select the temperature setpoints depending on the desired cooking level and depending on the nature and properties of the Gargutbehältnisse used and finally assign one or more controls. Consequently, a cooking process to be performed can be individually influenced by the operator or changed to achieve a desired cooking result.

In an advantageous embodiment of the present invention can be provided that z. B. three each associated with a cooking level controls are provided. The temperature setpoint assigned to each control element can, according to the invention, be changed jointly or simultaneously with the other control elements by a predetermined temperature value. The controls may be associated with, for example, the minimum, medium and maximum cooking levels, such that an operator, by selecting a particular cooking level, e.g. B. when roasting meat, can achieve a desired cooking results. If a desired cooking result is not achieved when using any non-system-bound Gargutbehältnisses, the respective assigned temperature setpoint specification by the z. B. simultaneous change of the temperature setpoint for all controls can be adjusted. Thus, an adjustment of the temperature setpoint default for all cooking stages can be realized in the simplest way, so that each cooking level by the operator to certain factors such. B. the material properties of the Gargutbehältnisse used or the like can be adjusted.

Preferably, this change of the assigned temperature setpoints can be made possible by a setting element assigned to all the control elements. Thus, by simply pressing, turning or the like actuating the adjusting element, the desired change in the temperature set point specification of each operating element can take place.

The change in the respectively assigned temperature setpoints can, for. B. be done gradually. Possible is z. B. the use of several, for. B. five temperature levels, which can then be assigned as the temperature setpoint to the controls. The number and the respectively assigned temperature of the temperature levels can be chosen arbitrarily.

According to an advantageous development, a first operating element can be assigned to the second temperature level in the basic setting. By pressing the first control element, a minimum cooking level can be selected. A second control element can, for. B. be associated with the third temperature level. When the second operating element is actuated, an average cooking level can be realized. Finally, by the operation of a third control element, a maximum cooking level can be selected, which is achieved by the fourth temperature level.

With this selected basic setting of the hob according to the invention, an increase in the temperature setpoint values can take place in that the individual operating elements are each assigned a temperature level increased by one level. A reduction in the temperature setpoints can be achieved in the so-called basic setting by assigning the temperature setpoints of the individual control elements to a temperature level reduced by one level. There are also other possible associations in the hob according to the invention conceivable.

Another possible embodiment of the present invention may also provide that the associated temperature setpoint of each control element is individually adjustable for each control element. This type of change of the temperature setpoint values can be advantageous in particular for experienced operators, since this possibility makes possible an individual temperature control for the desired cooking processes. It is also conceivable that in the hob according to the invention both a common adjustment and a separate, individual adjustment of the temperature setpoints is possible.

In the separate adjustment of the associated temperature setpoint of a control element can be provided, for example, that each control element is assigned a separate, own adjustment for increasing or decreasing the temperature setpoint. It is also possible that one menu-driven adjustment is used, in which a control element or a setting several functions can be assigned.

In addition to the proposed stepwise adjustment, it is also conceivable according to a further development that a continuous adjustment of the assigned temperature setpoint is made possible in the hob according to the invention.

Furthermore, at least one memory key or the like could be provided with which an individual setting of the assigned temperature setpoints of the operator can be stored, which differs from the basic setting. You may also have several individual settings, such. B. by different operators, are stored.

As a control element or adjusting element may preferably be provided with a wireless connection to a receiver part, a touch panel, which is electrically connected to the control device. But there are also other elements, such. As a knob or the like, usable, which is preferably retractable when not in use in the hob plate.

Figur 1

eine schematische Teilseitenansicht einer möglichen Ausführungsform eines erfindungsgemäßen Kochfeldes; und

Figur 2

eine schematische Ansicht möglicher Temperaturstufen als zuordenbare Temperatur-Sollwerte.

The present invention will be explained in more detail with reference to the drawing. Show it:

FIG. 1

a schematic partial side view of a possible embodiment of a cooking hob according to the invention; and

FIG. 2

a schematic view of possible temperature levels as assignable temperature setpoints.

FIG. 1 shows a partial side view of a possible embodiment of a hob according to the invention 1 with a cooktop plate 2 as a glass ceramic. The cooktop panel 2 has a plurality of heatable areas 3, wherein in FIG. 1 by way of example a heated area 3 is indicated on which a Gargutbehältnis 4 is arranged.

Below the hob plate 2, the heating area 3 is assigned a heating device 5 and a temperature sensor 6. With the temperature sensor 6, the actual temperature value can be detected at the heated area 3. The hob 1 according to the invention has for controlling and / or regulating the actual temperature value, a control device 7, which controls the heater 5 for setting a specific temperature setpoint. Moreover, in the embodiment shown, three operating elements 8, 9, 10 are provided for prescribing a specific cooking level by the operator.

With the first control element 8, a minimum cooking level (minimum) can be selected. The first operating element 8 is therefore assigned a lower temperature setpoint. By the second control element 9, an average cooking level (medium) can be selected. Thus, the second control element 9 is assigned a mean temperature setpoint. Finally, by the operation of the third control element 10, a maximum cooking level (maximum) can be selected. Consequently, the third control element 10 is assigned a higher temperature setpoint.

In order to improve the temperature setpoint specification in the individual operating elements 8, 9, 10, the invention provides that each individual operating element 8, 9, 10 can be assigned a plurality of temperature setpoint specifications. In the embodiment of the hob 1 according to the invention shown by way of example an adjusting element 11 is provided for this purpose, with which an increase or decrease in the temperature setpoint is made possible for all operating elements 8, 9, 10.

In the hob according to the invention, the three operating elements 8, 9, 10 and the adjusting element 11 are designed as touch fields integrated in the cooktop plate 2, which wirelessly communicate with an associated receiver part 12, 13, 14, 15 are electrically connected to the control device 7. By touching one of the touch panels of the controls 8, 9, 10, one of the cooking levels can be selected. If the operator wishes to perform an adjustment of the associated temperature setpoints, he can increase or decrease the temperature setpoint associated with this cooking level at an activated cooking level by operating the setting 11. It is also possible that the operator does not activate a cooking stage beforehand and then changes the temperature setpoint for all cooking stages by actuating the setting element 11.

In FIG. 2 schematically a possible gradual assignment variant of the temperature setpoints of the individual controls 8, 9, 10 is shown schematically. It is assumed that five different temperature levels T ₁ , T ₂ , T ₃ , T ₄ , T _{5 are} selectable. In a possible basic setting of the hob according to the invention, the first operating element 8, the temperature T ₂ of z. B. 120 ° C assigned. The second control element 9 is assigned in the basic setting, the temperature level T ₃ with a temperature of about 130 ° C. During the third control element 10, the temperature level T _{4 is associated} with a temperature of for example 140 ° C. The temperatures mentioned are only given by way of example, so that the temperature levels can be assigned to other arbitrary temperatures.

In the case of a common reduction in the assigned temperature setpoint values, each control element 8, 9, 10 can be assigned a temperature level reduced by one level. In contrast, with an increase in the temperature setpoint values, each control element 8, 9, 10 can be assigned a temperature level increased by one level become. This is in FIG. 2 indicated by the braces, which each mark a control element 8, 9, 10 assignable temperature levels. It is also possible that another arbitrary allocation is provided.

reference numeral

1

hob

2

Hotplate

3

Heated area

4

cooking container

5

heater

6

temperature sensor

7

control device

8th

first operating element

9

second operating element

10

third operating element

11

adjustment

12

receiver part

13

receiver part

14

receiver part

15

receiver part

Claims (10)

1. Cooktop (1), with a control device (7) for controlling and/or regulating an actual temperature value of an item of cookware (4) heated by means of an assigned heating device (5), with at least one temperature probe (6) for detecting the respective actual temperature value of the item of cookware (4) and with at least one control element (8, 9, 10) for predetermining a setpoint temperature value to which only one first setpoint temperature value (T₃) stored in the control device (7) is assigned, characterized in that the control device (7) for the control element (8, 9, 10) stores a first setpoint temperature value (T₃) and a second setpoint temperature value (T₂, T₄) and only one of these temperature setpoint values (T₂, T₃, T₄) is assigned to the control element (8, 9, 10), wherein, with a corresponding user-side actuation of the control device (7) the control element (8, 9, 10) is assigned the first setpoint temperature value (T₃) or the at least one second setpoint temperature value (T₂, T₄).
2. Cooktop according to claim 1 or 2, characterised in that, with a plurality of control elements (8, 9, 10), their second setpoint temperature value is larger or smaller by a common temperature difference, especially 10 Kelvin, than their first setpoint temperature value.
3. Cooktop according to claim 1, 2, or 3, characterised in that an adjustment element (11) assigned jointly to the control elements (8, 9, 10) is provided for increasing and/or reducing the setpoint temperature values in each case.
4. Cooktop according to one of the preceding claims, characterised in that there is provision for a level-by-level adjustment of the setpoint temperature value.
5. Cooktop according to one of the preceding claims, characterised in that a series (17) of temperature values (T₁, T₂, T₃, T₄, T₅) is stored in the control device (7).
6. Cooktop according to claim 6, characterised in that the first setpoint temperature value (T₃) and the at least one second setpoint temperature value (T₂, T₄) of the control element (8, 9, 10) features at least two temperature values from the series (17) of temperature values (T₁, T₂, T₃, T₄, T₅) which exhibit the smallest temperature difference from each other.
7. Cooktop according to one of the preceding claims, characterised in that the assigned setpoint temperature value of each control element (8, 9, 10) is freely adjustable.
8. Cooktop according to claim 7, characterised in that each control element is assigned an adjustment element (11) for increasing or reducing the setpoint temperature value.
9. Cooktop according to one of the preceding claims, characterised in that there is provision for a continuous setting of the assigned setpoint temperature value.
10. Cooktop according to one of the preceding claims, characterised in that at least one memory button for storing an individual setting of assigned setpoint temperature values is provided.

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