EP3255348A1 - Cooking hob with extractor fan and power stage adjustment of an energy provider dependent on the operating mode of the extractor fan and method for operating a cooking hob - Google Patents

Abstract

The invention relates to a hob (1) with a hob plate (2), and with at least one energy generator (8, 9, 10, 11) for outputting energy and a resulting heating of a cooking zone (4, 5, 6, 7 ) of the cooking field plate (2) erectable cookware (17), and with a fume hood (14) which is arranged adjacent to the cooking plate (2) that an air flow (18) on the hob plate (2) is pulled down, said Hob (1) has an electronic operating unit (12), with which a power stage of the energy generator (8 to 11) for generating energy depending on an active operating state of the extractor hood (14) is adjustable. The invention relates to a method for operating a hob (1).

Description

The invention relates to a hob with a hob plate and at least one energy generator for dispensing energy and a resulting heating of a can be set up on a cooking zone of the hob plate cookware. The hob also includes a cooker hood disposed adjacent the hob plate such that an airflow is drawn down the hob plate. Furthermore, the invention also relates to a method for operating a hob.

Cooktops with an extractor integrated are well known. For example, this is in the EP 0 445 121 B1 disclosed. In such hobs, a fan is positioned below the hob plate, which is then also a sucking fan. This means that during operation of the blower via an opening in the hob plate or an opening formed directly adjacent to the hob plate then air is sucked in, so that an air flow is generated, which also flows over the top of the hob plate. As a result, steam that escapes from a cookware set up on the top of the hob plate is sucked to the side or then downwards.

In these embodiments, a disadvantage is the fact that due to this air flow and a cooling of the cookware is done so that the preparation process is adversely affected. Since this is usually not recognized or perceived by a user, the preparation result is unsatisfactory.

It is an object of the present invention to provide a hob and a method for operating a hob, in which or with which the influence of the preparation result is taken into account by the extractor hood.

This object is achieved by a hob and a method according to the independent claims.

An inventive hob comprises a hob plate. The hob also includes at least one energy generator configured to emit energy so that resulting energy from the resulting heating of cooking utensil mounted on the cooking zone of the cooking hob plate occurs. The energy generator can be, for example, a radiant heater or an inductor. Depending on this specific embodiment of an energy generator, the cooking zone on the hob itself can be heated directly or, as is the case with an inductor, heating of the cookware is achieved by electromagnetic interaction between the inductor and the cookware. The hob also includes a fume hood, which is arranged adjacent to the hob plate and, in particular in the vertical direction and thus viewed in the vertical direction is arranged at a level which is lower than an upper surface of the hob plate.

The extractor is designed so that an air flow is generated, which flows along the hob plate and flows down or pulled down. The air flow is thus drawn below the level of the top of the hob plate. An essential idea of the invention is to be seen in that the cooktop has an electronic operating unit, with which a power stage of the energy generator for power generation is adjustable depending on an operating state of the extractor hood. An operating state is also understood to mean a change in operating state of the extractor. As a result of the invention, an active operating state of the vapor evacuation is thus automatically detected by the cooking field itself and thus, depending on this, a power level change of the energy transmitter is set via the electronic operating unit. This counteracts negative influences, such as those caused by the air flow generated by the extractor on the set up cookware with regard to an undesirable lowering of the temperature of the cookware. A preparation process is thus automatically influenced by the power level adjustment to the effect that a user-expected preparation result is also achieved during active operation of the extractor, as it would be the case when the extractor is not activated. Moreover, this configuration also makes it possible for a user not to have to recognize such a negative influence on an active extractor, and thus need to react manually by changing the power level of the energy generator, but this automatically takes place automatically by the hob.

Preferably, it is provided that the electronic operating unit is designed such that the power level of the energy generator for energy production is adjustable depending on a cooling caused by the airflow generated in the active operating state of the extractor cooling of a aufstellbaren on the cooking surface cookware when the cookware is set up. In this embodiment, therefore, for example, a strength of the air flow and / or ambient conditions of the cookware, which may affect the air flow, for example, in terms of its temperature change, taken into account, to then make a very individual and needs-based adjustment of the power level of the energy generator , Thus, for example, be provided that at cooler ambient temperatures, for example, if in winter at least briefly a window of the room is open, in which the hob is, in principle, a cooling of the air flow of the extractor hood can go along and thus a then even greater cooling of the Cookware can occur. Taking into account these influencing factors, the power level can then also be increased more in order to generate an energy generation which enables the desired preparation result in the cookware.

It is preferably provided that the electronic operating unit is designed in such a way that the power stage for energy generation is adjustable to the extractor depending on a position of the cooking zone, on which a cookware which can be influenced by the air flow can be set. For example, if the cooking zone immediately adjacent to the extractor or to an opening through which the extractor then sucks in air and generates a flow of air, so an undesirable negative cooling of the cookware may be greater than in a cooking zone, which is farther away.

In particular, it is provided that the electronic operating unit is designed such that the power level of the energy generator for power generation is adjustable depending on a currently set in the current operating state operating stage of the extractor hood. Especially when the extractor is operable in different operating stages and thus different strong air flows can be generated, this can also individually influence the cooling of the cookware, so that it is then possible to react with a corresponding power level adjustment as required by this advantageous embodiment.

In a further advantageous embodiment, it is provided that the electronic operating unit is designed such that the power stage of the energy generator for power generation is adjustable depending on a currently set in the active operating state of the activated energy generator power level. By this configuration can also be considered whether just a very high power level is set, as it is set, for example, at the beginning of a preparation process, for example, for cooking, or if a preparation process is already advanced and the power level is reduced, for example, a weitererköcheln a To carry out the preparation. In these exemplary situations, an individual requirement profile of the respective change in the performance level can then again be present. Since in these individual situations of a preparation process, if necessary, different negative influences in an undesirable, caused by an air flow cooling of the cookware can be counteracted by this possibility of differentiation of this advantageous embodiment of the invention to the very individual and needs and the power level adjustment take into account under this aspect.

In a further advantageous embodiment, it is provided that a cookware is placed on the cooking zone and the electronic operating unit is designed such that the power level of the energy generator for energy production depending on a presence or absence of a lid on the cookware is adjustable. In this context, it is taken into account that cooling of the cookware or of the preparation material therein takes place more extensively and faster if no such lid is placed on the cookware. In order to avoid this again individually or to make a power level adjustment as needed, this aspect is taken into account.

In an advantageous embodiment, it may be provided that, based on the possible change of a power level of the energy generator, a cooking zone-specific factor is used as a function of a position of a cooking zone to a fume hood. It can then be provided that for a first cooking zone, a first is based on cooking zone-specific factor by which then the power level of the energy generator is increased when a cooking utensil is placed on this cooking zone and the associated energy generator is activated and then the extractor is activated to generate an air flow. If, on the other hand, a cooking operation is carried out on a different second cooking zone and an energy generator assigned to this cooking zone is activated and then the extractor hood is also activated to generate an airflow, a power level adjustment of this energy generator can take place around a specific cooking zone-specific factor assigned to this second cooking zone.

In a further advantageous embodiment it is provided that the electronic operating unit is designed such that the power stage of the energy generator for power generation is adjustable only in the active, an air flow generating operating state of the extractor. An undesirable adjustment of the power level with deactivated extractor hood is thereby prevented. For example, it can also be avoided that, when the window is open or the door is open, an air flow that only very slightly spans over the cooktop panel leads to undesirable power level adjustment of the energy transmitter.

In particular, it is provided that the electronic operating unit is designed such that the power stage of the energy generator for power generation by a particular discrete factor is variable.

It can be provided that the factor is changeable depending on influence criteria. In such an embodiment, the factor then has a functional relationship, so that a very needs-based power level change for a variety of starting situations is possible. An influencing criterion can be, for example, a position of the cooking zone, on which a cookware which can be influenced by the air stream can be placed, for the extractor hood. In addition to or instead of this, however, an influencing criterion may also be a currently set operating stage of the extractor hood in the active operating state of the extractor hood. Furthermore, in addition to or instead of this, an influencing criterion can be a power level currently set in the active operating state of the activated energy generator. Additionally or instead, an influence criterion can also be a presence or a Absence of a lid on a cookware actually placed on the cooking zone.

In a further advantageous embodiment, it is provided that an influencing criterion can be specified individually depending on a hob type. For example, a cooktop type can be characterized by its cooking zone layout. Thus, a cooking zone layout can be characterized by a specific number of cooking zones and / or by an individual size of the cooking zones and / or by an individual position of the cooking zones on the hob plate to each other.

Thus, the needs-based adjustment of the power level of the energy generator in an airflow generating activated operating state of the extractor will be improved.

It can also be provided that this factor is given unchangeably and is thus given constant, so that it is then fixed independently of influence criteria. It can be provided that the factor, whether it is dependent on influencing criteria or is an unchangeable factor, is stored in a table in the electronic operating unit and an individual factor associated with the hob can be selected.

In an advantageous embodiment, it is provided that the electronic operating unit is a control unit, with which the adjustment of the power level of the energy generator is controlled or controlled depending on the said factor.

For such a control is thus an adaptation of the power level and thus also the heating power of the energy generator by a defined factor or by means of a function in which the factor is dependent on influence criteria performed.

It can also be provided that the electronic operating unit is a control unit or a controller, wherein the adjustment of the power level of the energy generator then depends on a detected with a sensor temperature change of the cookware on the cooking zone and active operating state, in particular then a change in operating state of the Extractor is adjustable. In such a scheme Thus, the temperature of the cookware is detected in particular with the aid of such a sensor. Detects this sensor in particular a change in temperature in the cookware, for example, after a change in the operating state of the extractor without a change in the power level of the energy generator, the power level of this energy generator is adjusted accordingly. This is a very accurate way to detect the temperature change on the cookware and to be able to respond very needs-based with a power level adjustment of the energy generator. In such a scheme, it is possible to disregard the above-mentioned factors, whether they are unchanged or have a functional relationship depending on influence criteria. Preferably, it is provided in such a scheme that an adjustment of the power level of the energy generator only with a change in the operating state of the extractor, as it is then recognized, since, for example, a change in the temperature of the cookware by adding or removing food in the Cookware may occur, but what is then detected by the sensor, but is not an undesirable influence, as generated by an air flow of the extractor.

In particular, the extractor is formed in the hob itself. The extractor is viewed in the height direction formed with a blower, which works in particular suction. In particular, this fan is disposed below an upper surface of the cooktop panel so that, during operation of the extractor, an outflowing air stream is created which flows over the top of the cooktop panel and down through an opening in the cooktop panel or immediately adjacent to the cooktop panel. It is thus in the hob plate itself or immediately adjacent to a suction formed, through which then the air flow is sucked down.

Furthermore, the invention also relates to a method for operating a hob, which has a cooktop plate and at least one energy generator for dispensing energy, wherein the energy emitted results in heating of a cookware which can be erected on the cooking zone of the cooktop panel. With an extractor hood of the hob, which is arranged adjacent to the hob plate, an air flow is generated at the top of the hob plate, which then flows down or pulled down. A power stage of the energy generator for power generation is set depending on an operating state of the extractor with an electronic operating unit of the hob.

Advantageous embodiments of the hob according to the invention are to be regarded as advantageous embodiments of the method according to the invention, in which case, in particular, the electronic operating unit is designed to carry out the corresponding method steps.

The terms "top", "bottom", "front", "rear", "horizontal", "vertical", "depth direction", "width direction", "height direction", etc. are the intended use and intended arrangement of the device and at a given then before the device standing and looking in the direction of the device given positions and orientations.

Further features of the invention will become apparent from the claims, the figures and the description of the figures. The features and feature combinations mentioned above in the description, as well as the features and feature combinations mentioned below in the description of the figures and / or shown alone in the figures, can be used not only in the respectively specified combination but also in other combinations without the scope of the invention leave. Thus, embodiments of the invention are to be regarded as encompassed and disclosed, which are not explicitly shown and explained in the figures, but which emerge and can be produced by separated combinations of features from the embodiments explained. Embodiments and combinations of features are also to be regarded as disclosed, which thus do not have all the features of an originally formulated independent claim. Moreover, embodiments and combinations of features, in particular by the embodiments set out above, are to be regarded as disclosed, which go beyond or deviate from the combinations of features set out in the back references of the claims.

Embodiments of the invention will be explained in more detail with reference to a schematic drawing. The single FIGURE shows a schematic perspective view of an embodiment of a hob according to the invention.

A hob 1 shown in the figure comprises a hob plate 2, which may be formed for example of glass or glass ceramic. On an upper side 3 of the hob plate 2 are in the embodiment in position, number and geometry only by way of example and in no way concluding to understand cooking zones 4, 5, 6 and 7 formed or shown.

The cooktop 1 furthermore comprises in particular a plurality of energy transmitters 8, 9, 10 and 11, which are arranged below the cooktop panel 2 and are each positioned positionally below the respective cooking zone 4, 5, 6 and 7. By the energy generator 8 to 11, an energy can be generated by which a set up on a cooking zone 4 to 7 cookware can be heated. An energy generator 8 to 11 may be, for example, a radiant heater or an inductor.

The energy generator 8 to 11 are operable by an electronic operating unit 12. The hob 1 also includes an operating device 13, which is shown only symbolically and thus also is neither in size nor in position concluding to understand. The operating unit 13 may have one or more operating elements and may comprise a display unit.

In addition, the hob 1 comprises a fume hood 14, which is arranged immediately adjacent to the hob plate 2 and thus is quasi part of the cooktop 1 itself or is covered by the. The extractor 14 is arranged below the hob plate 2 and comprises a fan 15, which is designed as a suction fan. The fan 15 is arranged in the height direction and thus viewed in the vertical direction below the hob plate 2.

In the embodiment, it is provided that in the hob plate 2 itself a recess 16 is formed as a hole through which in the active operating state of the extractor 14 and thus the fan 15 air is sucked from above the hob plate 2 down.

In the active operating state of the extractor 14, in which an extracted air stream 18 is generated by the blower 15, which roams over the top 3 and then is pulled down through the recess 16, an example set up on the cooking zone 11 cookware 17 is affected. By then at least partially influx or flow around this cookware 17 of this generated air stream 18 of this cookware 17 is cooled, which would also lead to a cooling of the cooking utensil 17 located in the cooking product or food preparation by itself.

The electronic operating unit 12 is designed such that a power stage of the energy generator 8 to 11 for the respective power generation depending on an operating condition, in particular a change in operating state of the extractor 14 is adjustable.

In the embodiment, this means that the power level of the energy generator 11 can be changed by the electronic operating unit 12 depending on the operating state of the extractor 14.

In this context, it may be provided that the electronic operating unit 12 is a control unit. The adaptation of this power level of the energy generator 11 to the corresponding power generation can then be set depending on a cooling caused by the airflow 18 generated in the active operating state of the extractor 14 cooling the set up on the cooking zone 4 cookware 17. Additionally or instead, the control can be adjusted depending on the position of the cooking zone 7 to the extractor 14. In addition, in addition to or instead of the setting of the power level by the electronic operating unit 12 depending on a currently set in the active operating state of the extractor 14 operating stage of several operating stages of the blower 15 can be adjusted.

Furthermore, in addition to or instead of the power level of the energy generator 11 can be adjusted by the electronic operating unit 12 depending on an active operating state of the activated energy generator 11 currently set power level.

In addition, it can be considered whether a lid is applied to the cookware 17 or not. Also depending on the power level adjustment of the energy generator 11 can then be controlled by the electronic operating unit 12.

In particular, it is provided that the adaptation of the power level of an energy generator 8 to 11 can only take place in the active operating state of the extractor hood 14 generating an airflow 18.

It can also be provided that the electronic operating unit 12 is designed such that the power level of an energy generator 8 to 11 for individual power generation by a particular discrete factor is variable. This factor can be fixed unchangeable constant. However, it can also have a functional relationship, with a position of the cooking zone 4 to 7 to the extractor hood 14 and / or an operating mode of the extractor 14 currently set in the active operating state and / or an active operating state of the activate energy generator 8 to 11 currently set power level and / or a presence or absence of a lid on the cookware 17 are called.

An influence criterion can also be dependent on a type of cooktop 1, wherein a type is characterized, for example, by an individual cooking zone layout.

In an alternative embodiment, the electronic operating unit 12 may be a control unit. In this embodiment, it can be provided in particular that a temperature of the cookware 17, in particular a temperature change of the cookware 17 is detected with a sensor and then with an additionally detected active operating state of the extractor 14, in which thus an air flow 18 is generated, with the operating unit 12 then a power level of the energy generator 11 is regulated and thus then adjusted here. In particular, an operating state change of the extractor is then detected here, for example a change from a deactivated operating state to an activated operating state and / or a change from a power stage of the extractor 14 in the activated operating state.

It can also be provided that the recess 16 is not formed directly in the hob plate 2, but a corresponding recess 16 immediately adjacent, for example, in a worktop in which the hob 1 is installed, is formed.

LIST OF REFERENCE NUMBERS

1

hob

2

Hotplate

3

top

4

cooking zone

5

cooking zone

6

cooking zone

7

cooking zone

8th

energizer

9

energizer

10

energizer

11

energizer

12

operating unit

13

operating unit

14

extractor

15

fan

16

recess

17

Cookware

18

airflow

Claims (15)

Hob (1) with a hob plate (2), and with at least one energy generator (8, 9, 10, 11) for releasing energy and a resulting heating of a cooking zone (4, 5, 6, 7) of the hob plate ( 2) erectable cookware (17), and with a fume hood (14) which is arranged adjacent to the cooking plate (2) that an air flow (18) on the hob plate (2) is pulled down, characterized in that the hob (1) has an electronic operating unit (12), with which a power level of the energy generator (8 to 11) for power generation depending on an active operating state of the extractor hood (14) is adjustable. Hob (1) according to claim 1, characterized in that the operating unit (12) is designed such that the power level of the energy generator (8 to 11) for generating energy depending on a by the active operating state of the extractor hood (14) generated air flow (18th ) occurring cooling of one on the cooking zone (4 to 7) can be set up cookware (17) is adjustable. Hob (1) according to claim 1 or 2, characterized in that the operating unit (12) is designed such that the power level of the energy generator (8 to 11) for generating energy depending on a position of the cooking zone (4 to 7), on the Cookware (17) which can be influenced by the air flow (18) can be set to the extractor hood (14). Hob (1) according to any one of the preceding claims, characterized in that the operating unit (12) is designed such that the power level of the energy generator (8 to 11) for energy generation depending on a currently active operating state set operating stage of the extractor (14) adjustable is. Hob (1) according to one of the preceding claims, characterized in that the operating unit (12) is designed such that the power level of Energy generator (8 to 11) for power generation depending on a current operating state of the activated energy generator (8 to 11) currently set power level is adjustable. Hob (1) according to one of the preceding claims, characterized in that a cookware (17) on the cooking zone (4 to 7) is placed and the operating unit (12) is designed such that the power level of the energy generator (8 to 11) for Energy production is dependent on a presence or absence of a lid on the cookware (17) is adjustable. Hob (1) according to one of the preceding claims, characterized in that the operating unit (12) is designed such that the power stage of the energy generator (8 to 11) for generating energy only in the active, an air flow (18) generating operating state of the extractor (14 ) is adjustable. Hob (1) according to any one of the preceding claims, characterized in that the operating unit (12) is designed such that the power level of the energy generator (8 to 11) for generating energy by a particular discrete factor is variable. Hob (1) according to claim 8, characterized in that the factor depending on influence criteria, in particular a position of the cooking zone (4 to 7) on which a by the air flow (18) influenceable cookware (17) can be set up to the extractor hood (14 ) and / or an operating stage of the extractor (14) currently set in the active operating state and / or a power level currently set in the active operating state of the activated energy generator (8 to 11) and / or a presence or absence of a lid on the cookware (17 ), is changeable. Hob (1) according to claim 9, characterized in that an influence criterion depending on a hob type with respect to cooking zone layout is individually definable. Hob (1) according to claim 8, characterized in that the factor is fixed unchangeable. Hob (1) according to one of claims 9 to 10 and / or claim 11, characterized in that the factor dependent on influence factors and / or the unchangeable factor are stored in a table in the operating unit (12) and a cooking hob (1) associated factor is selectable. Hob (1) according to one of the preceding claims 8 to 12, characterized in that the operating unit (12) is a control unit with which the adjustment of the power level is controllable depending on the factor. Hob (1) according to one of claims 1 to 7, characterized in that the operating unit (12) is a control unit, the adjustment of the power level depending on a detected with a sensor temperature change of a cookware (17) on the cooking zone (4 to 7 ) and only in the active operating state, in particular operating state change, the extractor hood (14) is adjustable. Method for operating a hob (1), with a hob plate (2), and with at least one energy generator (8 to 11) for dispensing energy and a resulting heating of one on a cooking zone (4 to 7) of the hob plate (2) can be set up Cookware (17), and with a fume hood (14), which is arranged adjacent to the hob plate (2) such that an air flow (18) on the hob plate (2) is pulled down, characterized in that a power stage of the energy generator ( 8 to 11) is adjusted for power generation depending on an active operating state of the extractor hood (14) with an electronic operating unit (12) of the hob (1).

Images