DE102009020628A1 - Hob and method for heating cooking vessels set up on the hob - Google Patents

Abstract

A cooktop for heating one or more cooking vessels (7), such as pots, pans or the like, which can be placed on a cooking surface (4) in a predetermined surface area, preferably comprising a device (8) for detecting the position of the at least one cooking vessel (7). 7) on the hob, is characterized in that the hob has a radiation source (9) for generating a light beam which is movable or whose light beam via a movable deflecting device (12) facing away from the cooking vessel side of the adjusting plate (4 ) is steerable, and / or that the detection device comprises a sensor device (8) for detecting a reflection image of the light from the control plate (4) reflected light rays.

Description

The The invention relates to a hob for heating on the hob placed cooking vessels such as pots, Pans or the like, which preferably comprises a device for detecting the position of the cooking vessel on the hob and a method for operating the hob.

It is well known in the art to automatically determine the position of objects on a hot plate. So revealed the WO 97/19298 the idea of distributing in a matrix arrangement heating elements such as induction coils under a control plate of a heating field for cooking vessels. It is proposed to determine the position of the cooking vessels on the heating field and perform the control, inter alia, in dependence on this position determination. Further developed solutions of this type for cooking vessels on cooktops show the EP 1 206 164 B1 and the DE 603 08 704 T2 ,

Indeed has the above type of position determination so far not enforced, so there is a need for a cooktop, which is a simplified determination of the position of the cooking vessel and possibly also the heating of the cooking vessel on the hob is possible.

moreover There is also a need for a simplification of the heating of the Cooking vessels in themselves.

The Solving these different problems - ever for itself or in combination - is the object of the invention.

The Invention solves this problem by the subject matter of the claim 1. It also provides the method of claim 11 and the use of Claim 14.

• – das Kochfeld eine Strahlungsquelle zur Erzeugung eines Lichtstrahls aufweist, welche beweglich ist oder deren Lichtstrahl über eine bewegliche Umlenkeinrichtung durch die von dem Kochgefäß abgewandte Seite der Stellplatte auf die von dem Kochgefäß zugewandte Seite der Stellplatte lenkbar ist,
• – und/oder wobei die Erfassungsvorrichtung eine Sensoreinrichtung zur Erfassung eines Reflektionsbildes der von dem Kochgefäß und/oder von der Stellplatte reflektierten Lichtstrahlen aufweist.

The invention thus provides a hob for heating on the hob set up on a control plate cooking vessels such as pots, pans or the like., Which preferably has a device for detecting the position of the cooking vessel on the control plate, wherein

• - The hob has a radiation source for generating a light beam, which is movable or the light beam is deflected by a movable deflection through the side facing away from the cooking vessel side of the adjusting plate on the side facing the cooking vessel of the adjusting plate
• - And / or wherein the detection device comprises a sensor device for detecting a reflection image of the light reflected from the cooking vessel and / or from the adjusting plate light rays.

To an idea of this claim, the hob has a radiation source for generating a light beam, which is movable or their light beam via a movable deflection on the cooking vessel side facing the for this Light wavelength transparent control plate is steerable.

Exactly in the plane of the cooking vessel side facing the footprint is the light beam focused and running according to a scheme within the area of the one located in this level Bottom of the cooking vessel.

so can use the light from just a single radiation source be, according to a given scheme or depending on each one alternately determined by the situation or cooking task scheme also several cooking vessels on the shelf too heat. This is inexpensive and easy.

additional it makes sense and particularly advantageous if the detection device a sensor device for detecting the reflection image of the Cooking vessel bottom or the reflector plate reflected Having light rays.

This is particularly advantageous when the cooking vessels on the shelf within a given limited area are freely positionable, since it is necessary in this case, the exact Position of the one or more cooking vessels (s) on the control panel to determine the light beam exactly the area of the top of the translucent or self directed by the light heatable control plate on which the Cooking vessel or the cooking vessels are set up.

in this connection it is again useful if the sensor device is connected to a control device, which consists of the sensor signals determines the position of the cooking vessel and the depending on this determination, the radiation source and / or the deflection device such that the generated Beam of light is directed to the surface area the cooking vessel according to the result of the position determination located.

Naturally you can also place only one cooking vessel on the hob whose position is detected and which is heated. Especially but it is advantageous if the position of several with the sensor device Cooking vessels on the shelf is determined and if with the radiation source the several cooking vessels to be heated.

In this case, the light beam of the radiation source is particularly advantageous by a suitable An controlling the radiation source or the deflecting successively offset in time alternately - preferably repeated periodically according to a scheme - directed to the various cooking vessels.

The The invention also relates to a cooking appliance, in particular a Cooker, with a hob according to one of the preceding claims.

The Invention also suggests the use of a laser Heating one or more on a shelf of a hob cooking utensils / cooking vessels in front. The use of a laser for this purpose has not been used although he was due to the fact that he was producing a precisely directed light beam designed with high energy is particularly good for the task of heating one Cooking vessel on a hob is suitable.

advantageous Embodiments of the invention are the subclaims refer to.

following the invention with reference to the drawings based on embodiments described in more detail. It shows:

1 a schematic, partially sectioned view of a first cooking appliance with a hob and a set up thereon in a first position cooking vessel,

2 a schematic, partially sectioned view of another embodiment of a cooking appliance with a hob and a set up thereon in a cooking vessel,

3 - 6 various schematic plan views of hobs;

7 and 8th further partial cuts of herds with hobs.

1 shows a cooking appliance 1 with a housing 2 which is a hob 3 with a parking plate 4 and a control unit 5 with a control surface 6 having. 2 shows another embodiment where the control surface 6 in the parking space 4 is integrated.

On the hob is a cooking vessel 7 placed. This cooking vessel 7 or possibly several of the cooking vessels 7 are on the hob 3 within a defined Garflächenbereiches G arbitrarily placeable (see the various arrangements of 3 to 6 and the different positions of the pot 7 in 1 and 2 ).

The position of the at least one cooking vessel 7 on the hob is with a detection device 8th determinable.

By the detection device 8th It is also possible to manually predetermine the desired cooking vessel position.

This detection device 8th is designed as a sensor device, in particular as a digital camera, which is designed to be from the bottom 9 the shelf 4 to detect reflected electromagnetic radiation and the detected image with a computing unit 10 having a microprocessor, to evaluate the position of the cooking vessel from the determined values 7 on the shelf 4 to determine.

Depending on this position determination is then using a radiation source 11 generated electromagnetic radiation targeted to the area of the top of the control plate, in which the cooking vessel 7 located.

The Material and / or the structure of the actuator plate is chosen that the radiation can pass through almost unhindered and on the top reaches the bottom of the cooking vessel with virtually no energy loss. As a material for the actuator plate is suitable, for example for each wavelength of radiation used transparent glass or glass ceramic.

For aligning the jet on the bottom of the cooking vessel in the plane of the top of the setting plate 4 a reflector and / or focusing device can be used, here a mirror 12 , which is movably positioned under the adjusting plate and whose position is variable, for example by means of controllable servomotors, to that of the radiation source 11 on the mirror 12 direct directed light into each to be heated area of the cooking surface G, on which after the result of determining the position of the cooking vessel 7 located.

Of course, instead of a single larger spatially (for example by two mutually perpendicular axes of rotation) adjustable mirror also a plurality of smaller, individually controllable mirror below the control plate 4 be placed in order to direct the radiation more targeted and accurate than is possible with a single mirror.

It is conceivable, with the help of a test beam, first, the surface of the actuator plate 4 following a given schedule, to "stop" the position of one or more of the cooking vessels before starting a cooking operation 7 on the adjusting plate or adjusting plate 4 to investigate.

To it is also conceivable, the cooking surface G on its underside, So the side facing away from the cooking vessel bottom, with a layer which can be activated by the test radiation, around the position for the cooking vessel visible close.

After placing the cooking vessel, the actual cooking process can begin. During this cooking process, the position determination z. B. be repeated at predetermined intervals to determine whether the cooking vessel 7 (see 1 and 2 ) was possibly moved.

3 illustrates that the invention is of course also suitable for non-cylindrical cooking vessels, but also for elongated pots 7 or the like, as used for various food items. These are also freely placed on the cooking surface and also displaceable during the cooking process (see 3 and 4 ).

Of course, the above-described method of positioning and heating the cooking vessel is not limited to a single cooking vessel. It is also possible, the position of several cooking vessels 7 - please refer 5 - to detect at a "scanning" of Garflächenbereiches.

Heating several of the cooking vessels 7 can be either with multiple radiation sources 9 done and several mirrors 12 or it becomes the one radiation source 9 z. B. periodically on the various cooking vessels 7 directed, ie, the mirror 12 is from cooking vessel 7 to cooking vessel 7 adjusted.

Of course, preferably the light beam is interrupted when jumping to the next cooking vessel surface. The interruption also occurs immediately when the cooking vessel from the setting plate 4 is removed.

As a radiation source 9 In particular, lasers are suitable because their precisely directed light beam on the one hand enables a particularly accurate position determination and on the other hand, the laser light beam is suitable for selecting a suitably designed laser to initiate a sufficiently high energy to the cooking vessel 7 to heat.

Are several of the cooking vessels 7 on the Stellplatte / Garfläche, it is conceivable to direct the laser beam alternately on a Steuerproramm on the various cooking vessels, depending on the nature of the task -. As a slight heating of the contents of a small cooking vessel or heating the contents of a larger cooking vessel - the energy input can be controlled. In addition, temperature sensors or the like. Be used to control the cooking process By the use of the laser source is a very precise, energy-saving control of the heating / cooking process possible. Thus, a pulsed energy supply / radiation conceivable or even irradiation of the cooking vessel in different areas of the cooking vessel with different intensity, for example, to heat one half of a cooking vessel more than another half.

Instead of A laser beam is also the use of other energy-rich and well focused radiation sources conceivable. So could an infrared radiation source can be used. It is even conceivable the use of sunlight.

7 shows that it is also conceivable, the light of the laser beam of the radiation source of the hob for heating food in a furnace 13 to use, which is to be used for heating food and which is arranged elsewhere, for example below the cooking appliance shown. This can also be combined with microwave radiation on a rotatable plate 14 respectively.

8th shows the application of heating and cooking food by means of the traveling radiation in a separate cooking appliance / oven 13 ,

For the sake of clarity, is in 7 and 8th the cooking compartment separation to the mirror 12 not shown, since of course the mirror should not be acted upon by the Wrasen or fat splashes.

The Summary of the invention provides u. a. also a device and a method of using a traveling energy beam for food preparation on a cooktop panel, whereby by a radiation source very flexible several cookware / cooking vessels at the same time and heated with different intensity can.

Of the Cooking process can be automatically monitored according to the cooking progress and controlled. This will also energy savings through possibly a very fast shutdown or pulsation of the energy beam reached.

5 also illustrates that on the control panel (eg a touch screen) windows and switches can be displayed in the manner of menus, with which cooking parameters such as a temperature and / or a time can be entered, wherein the control device receives these values as input ,

The cooktop can be connected to a computer network, whereby possibly also an Internet and / or mobile monitoring is feasible.

It should be noted that the various components like the camera 8th and / or the laser 9 and / or the mirror 12 and / or the control device can be connected to each other wirelessly or via cable.

1

Cooking appliance

2

casing

3

hob

4

adjusting plate

5

operating unit

6

operating surface

7

cooking vessel

8th

detection device

9

bottom

10

computer unit

11

radiation source

12

mirror

13

oven

14

plate

G

Garflächenbereich

QUOTES INCLUDE IN THE DESCRIPTION

This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.

Cited patent literature

• WO 97/19298 [0002]
• - EP 1206164 B1 [0002]
• - DE 60308704 T2 [0002]

Claims (14)

Hob for heating one or more on the hob on a shelf ( 4 ) in a predetermined surface area installable cooking vessels ( 7 ), such as pots, pans or the like, which is preferably a device ( 8th ) for detecting the position of the at least one cooking vessel ( 7 ) on the hob, characterized in that the hob is a radiation source ( 9 ) for generating a light beam, which is movable or whose light beam via a movable deflection device ( 12 ) on the side facing away from the cooking vessel of the adjusting plate ( 4 ) is steerable, and / or that the detection device comprises a sensor device ( 8th ) for detecting a reflection image of the of the adjusting plate ( 4 ) has reflected light rays. Hob according to claim 1, characterized in that the cooking vessel or dishes ( 7 ) are freely positionable within the area G. Hob according to claim 1 or 2, characterized in that the radiation source ( 9 ) is a laser. Hob according to claim 1 or 2, characterized that the radiation source is an infrared light source. Hob according to one of the preceding claims, characterized in that the sensor device ( 8th ) is a camera. Hob according to claim 5, characterized in that the sensor device ( 8th ) is a digital camera. Hob according to one of the preceding claims, characterized in that the sensor device ( 8th ) is connected to a control device, from the sensor signals, the position of the cooking vessel ( 7 ) and, depending on this determination, the radiation source ( 9 ) and / or the deflection device ( 12 ) in such a way that the generated light beam is directed onto the area on which the cooking vessel is located. Hob according to one of the preceding claims, characterized in that with the sensor device ( 8th ) the position of several of the cooking vessels ( 7 ) is determinable on the adjusting plate and that with the radiation source ( 9 ) the several cooking vessels are alternately heated. Hob according to one of the preceding claims, characterized in that the light beam of the radiation source Also on food to be cooked in an oven, which is below the Hob or next to the hob is arranged. Cooking appliance with a hob after one of the preceding claims. Method for controlling and / or regulating a hob according to one of the preceding claims, characterized in that with the sensor device ( 9 ) the position of the cooking vessel 7 determined on the hob and / or that with the radiation source ( 9 ), in particular the laser, one or according to a predetermined scheme alternately several of the cooking vessels are heated on the hob. Method according to claim 11, characterized in that that the light beam of the radiation source for heating the cooking vessel and for determining the position of the cooking vessel is used on the hob. A method according to claim 11 or 12, characterized in that the position of the cooking vessels 7 manually on the footprint 4 can be predetermined within the surface area G without placing the cooking vessels. Use of a laser for heating one or more cooking vessels / cooking vessels erected on a setting plate of at least one cooking hob of a cooking appliance ( 7 ).