DE202023103051U1 - Hob with integrated extractor and with lighting, use of the hob for lighting - Google Patents

Abstract

Hob (10) with integrated lighting, comprising
- a hob plate having at least one hotplate (14), in particular a glass ceramic plate (1), with an upper side (2) on which cookware can be placed and with an underside (3) facing away from the upper side (2),
- at least one heating device, in particular an induction coil (4), arranged below the hob plate (1) for heating the cooking utensil,
- at least one suction opening (30) of a suction shaft (31) provided essentially in the plane of the surface of the hob plate (1) for sucking in and conveying cooking vapors or vapors downwards below the hob plate (1),
- At least one light source (40) for radiating out of the hob (10) for the integrated lighting, characterized in that
- The at least one light source (40) is arranged essentially within at least one intake duct (31).

Description

The invention relates to a hob with an integrated extractor and with lighting according to the preamble of claim 1. The invention also relates to the use of the hob for lighting according to claim 13.

A generic hob has a generally rectangular hob plate with a peripheral outer edge. One or more heating devices are present under the hob plate, for example radiant heating devices or induction heating coils can be provided, which are applied to an underside of the hob plate. Furthermore, there is a hob housing under the hob plate or rests on the underside, in which a hob controller and a power supply for the hob controller and the heating devices are arranged. Advantageously, the hob housing can also contain the heating devices or cover them at the bottom, as is known per se. A frame can be provided on the outer edge of the hob plate, advantageously running all around, the frame being designed for connection to a worktop when the hob is arranged on or in the worktop.

Hobs of this type are already known in a large number of embodiments from the prior art.

For example from the DE 10 2019 123 703 A1 a hob with at least one temperature sensor is known.

The DE 10 2020 212 171 A1 relates to a hob with weight sensors.

From the DE 20 2005 015 553 U1 a sensor-controlled hob with a vibration sensor is known.

The DE 10 2019 107 558 A1 relates to a method for operating a hotplate of a hob, preferably an induction hob, with cookware.

From the DE 10 2010 064 294 A1 a hob and a method for controlling an energy supply to a heating element of a hob are known.

According to the DE 10 2004 011 749 A1 For example, a hob with several hotplates and associated heaters is designed in such a way that associated, for example, inductive or capacitive cooking vessel detection sensors detect touching a cooking vessel that has been set up with a finger or the like as such. This is viewed by the hob controller as the selection of the hotplate in question.

From the DE 20 2019 106 084 U1 a downdraft range hood cooking surface is known having a top and a bottom and comprising: a plurality of cooking zones proximate the surface, a suction duct extending in a predetermined direction of extension between the top and the bottom, the suction duct having a suction port near the top and being in fluid communication with the exterior. The cooking surface also has a device that forms a mounting unit for the cooking surface with the surface in order to operate it and to allow the cooking vapors to be drawn off downwards.

From the DE 1 579 679 A1 discloses a device for extracting fumes and steam produced during cooking by means of a suction fan from a cooker.

From the EP 3 869 107 A1 an assembly unit with a hob and a device for operating a hob and for extracting cooking vapors downwards is known.

From the DE 10 2020 208 221 A1 a hob with a hob plate and light sources underneath is known, which can be controlled in different ways. For this purpose, light sources are provided for radiating out of the hob, which radiate or radiate or shine through the hob plate or laterally past the hob plate.

The disadvantage here is the comparatively high light output of the light sources for radiating out of the hob. In addition, there are power losses from the light sources due to the glass ceramic plate. The desired light color is also changed unintentionally due to the glass ceramic plate of the cooktop that is to be transilluminated, which also has aesthetic disadvantages.

The light sources known from the prior art, which are arranged on the side of the glass ceramic plate, are not suitable for homogeneous illumination of the area above the hob plate, since they only emit past the hob plate, particularly horizontally or at a shallow angle.

Proceeding from the disadvantages described above, the object of the invention is to provide a hob plate with integrated ventilation, which has lighting that is optimal in terms of energy and aesthetically pleasing.

This object is achieved with a hob with an integrated extractor and with lighting according to claim 1. This object is also achieved by using the hob according to claim 13.

The invention relates to a hob with integrated lighting, comprising a hob plate having at least one hotplate, in particular a glass ceramic plate, with an upper side on which cookware can be placed and with an underside facing away from the upper side.

Furthermore, the hob has at least one heating device arranged below the hob plate, in particular an induction coil, for heating the cooking utensil.

In addition, at least one suction opening of a suction shaft, which is provided essentially in the plane of the surface of the hob plate, is provided for sucking in cooking fumes or vapors downwards and transporting them on below the hob plate.

At least one light source is used to emit light from the hob for the integrated lighting.

According to the invention, the at least one light source is essentially arranged within at least one intake shaft or intake opening.

The lighting can illuminate the room as ambient lighting. The brightness and/or color can be changed with the fan level.

The lighting can also take on functionalities such as a residual heat indicator. Depending on the temperature, the brightness or light color can be changed.

An information function is also possible, for example a flashing light after a cooking zone or egg timer timer has expired as a supplement or replacement for an acoustic signal.

A warning signal can also be implemented by the lighting after a defined time has elapsed, during which at least one hotplate is switched on but no further operation takes place. This can e.g. B. remind older or forgetful people of the started cooking process as a kind of "dead man's switch" before the hob is possibly switched off completely.

The hob is preferably designed as an induction hob, since these can be regulated very precisely and directly. However, implementation in other heating technologies is also covered by the invention.

According to a first advantageous embodiment of the invention, the at least one light source emits the light by means of light guides out of the intake duct of the hob, in particular the at least one light source for indirect lighting is arranged laterally inside or below on the bottom of the intake duct or the intake opening.

The light sources can be arranged on the side inside or below on the floor in order to shine obliquely or indirectly out of the ventilation shaft.

A further advantageous variant of the invention provides that the light sources have LEDs or consist of LEDs or LED strips.

In an advantageous development of the invention, the at least one light source can be controlled by means of a light controller, with a communication device preferably being able to be connected to the light controller and designed to communicate with an external control device/receiver, preferably wirelessly via WLAN, Bluetooth or the like.

After receiving a control signal from the communication device, the light controller is designed to actuate the light sources in such a way that they radiate out of the cooktop into the space around the cooktop to generate room or background lighting.

According to a further advantageous embodiment of the invention, the light control for the bidirectional transmission of data is connected to a control and/or regulating device for controlling and/or regulating the energy of the heating device of the hob.

A further advantageous embodiment of the invention provides that the at least one light source can be operated by means of an operating element, in particular an operating sensor, with the operating element being arranged below the hob plate and preferably being designed as a capacitive sensor for operation on the surface of the hob plate.

Provision can also be made for the brightness and/or light color of the at least one light source to be adjustable, in particular for the light color to be adjustable automatically, for example as a function of ambient noise.

Also advantageous is an embodiment according to the invention in which the at least one intake opening lies in a plane parallel to the surface of the upper side of the hob plate.

In an advantageous embodiment of the invention, it is provided that the at least one suction opening is slit-shaped, in particular in the form of a joint or outflow joint, with preferably adjacent slit-shaped suction openings being arranged approximately at right angles to one another.

According to a further advantageous embodiment of the invention, the at least one suction opening is arranged approximately in the middle of the hob.

A further advantageous embodiment of the invention provides that the at least one suction opening is in fluid connection with a suction chamber with a rotating fan wheel of a fan motor for sucking off the cooking fumes or cooking vapors.

Also advantageous is a configuration according to the invention in which at least one sensor is provided for measuring temperature and/or for measuring movements/vibrations and/or for measuring weight, in particular where the sensor is connected to the control and/or regulating device in a signal-transmitting manner.

The sensor system can be arranged below the hob plate, preferably between the underside of the hob plate and the heating device and/or to the side of the heating device. In this way, the installation space is optimally utilized. The lateral arrangement reduces the possible influence of the sensors by the alternating magnetic field in induction cooktops.

The sensor system can have at least one temperature sensor for directly determining the temperature below the hob plate, in particular on the underside of the hob plate, and/or at least one infrared sensor for determining the pot base temperature through the hob plate, in particular a glass ceramic plate.

In the control and/or regulating device, the energy of the heating device required for a desired cooking process for heating the cookware can be determined as a function of this specific hob plate temperature and/or of the determined temperature of the food to be cooked.

By means of the at least one heating device controlled by the control and/or regulating device, this energy required for a desired cooking process can be automatically delivered to the hob plate.

In a particularly advantageous manner, the signals from the sensors of the sensor system are processed and evaluated in the electronics or control and/or regulating device in the cooktop, which then regulates the hotplates accordingly. Pot detection can also be included for induction hobs, without which no power is switched on and no calculations are made.

To increase the accuracy, each sensor can also be present several times.

An independent idea of the invention relates to the use of a hob as described above for illuminating a room in which the hob is arranged by means of at least one light source arranged in the hob.

Further goals, advantages, features and application possibilities of the present invention result from the following description of an exemplary embodiment with reference to the drawing. All the features described and/or illustrated form the subject matter of the present invention, either alone or in any meaningful combination, even independently of their summary in the claims or their back-reference.

• 1 ein Kochfeld mit Ansaugschacht und Lichtquellen in perspektivischer Darstellung,
• 2 das Kochfeld gemäß 1 in einer weiteren Ansicht,
• 3 eine weitere Darstellung des Kochfeldes gemäß 1,
• 4 das Kochfeld gemäß 1 in Draufsicht,
• 5 das Kochfeld gemäß 1 in einer Darstellung ohne Glaskeram ikplatte,
• 6 das Kochfeld gemäß einer weiteren Ausführungsvariante in a) Draufsicht, b) einer ersten Seitenansicht und c) einer weiteren Seitenansicht und
• 7 das Kochfeld gemäß 6 in einer Darstellung ohne Glaskeram ikplatte.

Some of them show schematically:

• 1 a hob with suction shaft and light sources in a perspective view,
• 2 the hob according to 1 in another view,
• 3 another representation of the hob according to 1 ,
• 4 the hob according to 1 in top view,
• 5 the hob according to 1 in a representation without glass ceramic plate,
• 6 the hob according to a further embodiment in a) plan view, b) a first side view and c) a further side view and
• 7 the hob according to 6 in a representation without glass ceramic plate.

Components that are the same or have the same effect are provided with reference symbols in the following figures of the drawing based on an embodiment in order to improve readability.

1 shows a hob 10 in a perspective view obliquely from above with a cooktop Field plate 1, which is designed here as a glass ceramic plate 1 and has four hotplates 14 in the selected embodiment.

Cookware, not shown, can be set up on the top 2 of the hob plate 1 . In the present case, the hotplates 14 are provided with a marking 7 on the upper side 2 of the glass ceramic plate 1 (cf. 1 and 6 ). The hob plate 1 has an underside 3 facing away from the top 2 .

The 2 shows the hob 10 in a further perspective view, also from above.

3 shows the hob 10 according to FIG 1 and 2 in a view from above, however, a cover grille 32 of an intake opening 30 for an intake shaft 31 is hidden there for the sake of clarity.

The 4 10 is an illustration of the hob 10 according to FIG 1-3 in plan view from above.

5 shows the hob 10 according to the embodiment of FIG 1-4 , but for better understanding the hob plate 1 has been hidden in order to be able to clearly see the components arranged underneath the hob plate 1.

From the 5 reveals at least one heating device arranged below the hob plate 1 for heating the cooking utensil, which in the present case is designed as an induction coil 4 . A control and/or regulating device 6 is provided for controlling and/or regulating the energy of the heating device 4 . The 5 also shows the hob 10 with the four hotplates 14. The operating unit 8 for the control and regulation device 6 can also be seen.

A sensor system 5 has at least one sensor for measuring temperature and/or for measuring movements/vibrations and/or for measuring weight, as also shown in FIG 5 emerges. The sensor system 5 is connected to the control and/or regulating device 6 in a signal-transmitting manner.

The hob 10, in particular the hob plate 1, can have a function key shown under item 9 for activating, switching and switching off the light functions in order to switch between the light functions and conventional operation with the light function deactivated when actuated.

The 1-5 also show a suction opening 30 provided essentially in the plane of the surface of the hob plate 1 for sucking in and conveying cooking vapors or vapors downwards below the hob plate 1. The suction opening 30 is present in a plane parallel to the surface of the top 2 of the hob plate 1. The suction opening 30 is part of a suction shaft 31, which can be closed by a cover grille 32 (cf. 1 and 2 ).

The suction opening 30 shown in the present exemplary embodiment is in the form of a slot, in particular in the form of a joint or outflow joint. Several suction openings are also conceivable, with adjacent slot-shaped suction openings 30 being able to be arranged approximately at right angles to one another.

In the present case, the suction opening 30 is arranged approximately in the center of the hob 10 and extends along the width of the hob plate 1.

The suction port 30 is in fluid communication with a suction space having a rotating fan wheel (fan motor) for sucking the cooking fumes or vapors downwards. In the variant according to 1-5 a fan housing 13 can be seen which accommodates the fan motor.

This housing 13 is arranged below the hob plate 1 on a substructure frame 15 of the hob 10 .

Furthermore, the 1-5 multiple light sources 40 to emanate from hob 10 for integrated lighting. These light sources 40 are essentially arranged inside the suction shaft 31 or the suction opening 30 .

This lighting can illuminate the room as ambient lighting. The brightness and/or color can be changed with the fan level. The lighting can also take on functionalities such as: Residual heat display, the brightness or light color can be changed depending on the temperature.

The lighting can also serve as an indicator function, for example as a flashing light after a hotplate or egg timer timer has expired as a supplement or replacement for an acoustic signal.

Furthermore, the lighting can be designed as a warning function, for example after a defined time has elapsed in which at least one hotplate is switched on but no further operation takes place. This can e.g. B. remind older or forgetful people of the started cooking process as a kind of "dead man's switch" before the hob is possibly switched off completely.

In the present exemplary embodiment, the light sources 40 embodied as LEDs, controlled by a light controller 41 , radiate the light out of the hob 10 by means of light guides. Like in particular 1-4 It can also be seen that the light sources 40 for indirect lighting are arranged laterally within the suction opening 30 in the suction shaft 31 . The light sources 40 can therefore be arranged laterally in order to illuminate at an angle or also indirectly or below in order to shine directly out of the intake shaft 31 .

The light sources 40 are present by means of in 5 apparent light control 41 controllable. A communication device is connected to the light controller 41 and designed for communication with an external control device/receiver, preferably wirelessly via WLAN, Bluetooth or the like.

After receiving a control signal from the communication device, the light controller 41 is designed to actuate the light sources 40 in such a way that they radiate out of the hob 10 into the space around the hob 10 to generate room or background lighting.

In the present case, the light controller 41 is connected to a control and/or regulating device 6 for controlling and/or regulating the energy of the heating device 4 of the hob 10 for the bidirectional transmission of data.

Out of 5 It can also be seen that the at least one light source 40 can be operated by means of an operating sensor 9.

The brightness and/or light color of the at least one light source 40 can be adjusted, in particular the light color can be adjusted automatically, for example as a function of ambient noise.

The 5 also shows the sensor system 5 having sensors for temperature measurement and/or for measuring movements/vibrations and/or for weight measurement, in particular that the sensor system 5 is connected to the control and/or regulating device 6 in a signal-transmitting manner.

The 6 and 7 show another embodiment of the hob 10. 6 shows this embodiment in a) plan view, b) a first side view and c) a further side view.

Compared to the variant according to 1-5 has the hob 10 according to 6 and 7 no ventilation motor integrated in the cooktop 10. Here the ventilation motor is not arranged below the hob plate 1 on a frame 15 of the hob 10, but can be arranged externally, for example in a separate housing on a wall or in a cabinet base.

Due to the light sources 10 arranged in the hob 10, the present hob 10 can be used to illuminate a room in which the hob 10 is arranged.

Reference List

1

hob plate

2

top

3

bottom

4

Heating device / induction coil

5

sensors

6

Control and/or regulating device

7

Cooking zone marking

8th

operating unit

9

operating sensor

10

hob

12

generator

13

fan housing

14

cooking place

15

Frame

30

intake port

31

intake manifold

32

cover grille

40

light source

41

light control

QUOTES INCLUDED IN DESCRIPTION

This list of documents cited by the applicant was generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Patent Literature Cited

• DE 102019123703 A1 [0004]
• DE 102020212171 A1 [0005]
• DE 202005015553 U1 [0006]
• DE 102019107558 A1 [0007]
• DE 102010064294 A1 [0008]
• DE 102004011749 A1 [0009]
• DE 202019106084 U1 [0010]
• DE 1579679 A1 [0011]
• EP 3869107 A1 [0012]
• DE 102020208221 A1 [0013]

Claims (13)

Hob (10) with integrated lighting, comprising - a hob plate having at least one hotplate (14), in particular a glass ceramic plate (1), with an upper side (2) on which cookware can be placed and with an underside (3) facing away from the upper side (2), - at least one heating device, in particular an induction coil (4), arranged below the hob plate (1) for heating the cookware, - at least one suction opening (30) of a suction shaft (31) provided essentially in the plane of the surface of the hob plate (1) for sucking in and conveying cooking vapors or vapors downwards below the hob plate (1), - at least one light source (40) for radiating out of the hob (10) for the integrated lighting,characterized, that - The at least one light source (40) is arranged essentially within at least one intake duct (31). Hob (10) after claim 1 , characterized in that the at least one light source (40) radiates the light out of the suction shaft (31) of the hob (10) by means of light guides, in particular that the at least one light source (40) for indirect lighting is arranged laterally inside the suction shaft (31). Hob (10) after claim 1 or 2 , characterized in that the light sources (40) have LEDs or consist of LEDs or LED strips. Hob (10) according to one of Claims 1 until 3 , characterized in that the at least one light source (40) can be controlled by means of a light controller (41), a communication device preferably being connectable to the light controller (40) and designed for communication with an external control device/receiver, preferably wirelessly via WLAN, Bluetooth or the like. Hob (10) according to one of the preceding claims, characterized in that the light control (41) for the bidirectional transmission of data is connected to a control and/or regulating device (6) for controlling and/or regulating the energy of the heating device (4) of the hob (10). Hob (10) according to one of the preceding claims, characterized in that the at least one light source (40) can be operated by means of an operating element, in particular an operating sensor (9), the operating element (9) being arranged below the hob plate (1) and preferably being designed as a capacitive sensor for operation on the surface of the hob plate (1). Hob (10) according to one of the preceding claims, characterized in that the brightness and/or light color of the at least one light source (40) can be adjusted, in particular that the light color can be adjusted automatically, for example as a function of ambient noise. Hob (10) according to one of the preceding claims, characterized in that the at least one suction opening (30) lies in a plane parallel to the surface of the upper side (2) of the hob plate (1). Hob (10) according to one of the preceding claims, characterized in that the at least one suction opening (30) is designed in the form of a slot, in particular in the form of a joint or outflow joint, with adjacent slot-shaped suction openings (30) preferably being arranged approximately at right angles to one another. Hob (10) according to one of the preceding claims, characterized in that the at least one suction opening (30) is or are arranged approximately centrally on the hob (10). Hob (10) according to one of the preceding claims, characterized in that the at least one suction opening (30) is fluidly connected to a suction space with a rotating fan wheel of a fan motor for sucking off the cooking fumes or vapors. Hob (10) according to one of the preceding claims, characterized in that a sensor system (5) having at least one sensor is provided for temperature measurement and/or for measuring movements/vibrations and/or for weight measurement, in particular that the sensor system (5) is connected to the control and/or regulating device (6) in a signal-transmitting manner. Use of a hob (10) according to one of Claims 1 until 12 for illuminating a room in which the hob (10) is arranged by means of at least one light source (40) arranged in the hob (10).

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