EP2951809A1

EP2951809A1 - Cooking appliance with a transparent display

Info

Publication number: EP2951809A1
Application number: EP14710819.5A
Authority: EP
Inventors: Dirk Engelhardt; Kurt Rudolf JAKOBI; Torsten Müller; Dirk Ruhe; Oliver WOYDT
Original assignee: MKN Maschinenfabrik Kurt Neubauer GmbH and Co KG
Current assignee: MKN Maschinenfabrik Kurt Neubauer GmbH and Co KG
Priority date: 2013-01-30
Filing date: 2014-01-30
Publication date: 2015-12-09
Anticipated expiration: 2034-01-30
Also published as: EP2951809B1; EP2951809B2; WO2014118295A1

Abstract

The present invention relates to a cooking appliance (1) having a housing (2), a cooking-appliance or cooking-chamber door (3) or a cooking-appliance or cooking-chamber cover for opening and closing a cooking chamber (4) of the cooking appliance (1), and at least one viewing opening (9) in the cooking-chamber door (3) or the cooking-chamber cover, wherein at least a portion of the viewing opening is able to assume the states transparent and opaque, said cooking appliance being distinguished in that the at least one portion of the viewing opening (9) has a transparent display (11) which is able to display information.

Description

Cooking device with transparent display

The present invention relates to a cooking appliance with a transparent display, according to the preamble of claim 1.

In the field of cooking appliances, there is an ongoing desire to continue to increase the ease of use of the cooking appliances. This desire stems, on the one hand, from the fact that, in the hectic pace of a kitchen operation, in particular larger restaurants with many guests, or in large kitchens, fast and accurate operation of the cooking appliances used should be ensured. On the other hand, more and more unskilled workers are deployed, for whom a simple and clear operating capability is crucial for correct operation. Conventionally, a cooking appliance, in particular a steam cooker or combi steamer, has a front side which has a cooking chamber door for opening and closing the oven compartment behind and at least one wider side pillar, in which the operating elements, such as rotary knobs, but also screens and touchscreens are housed. Due to the limited available in the page post front surface, the areal display and controls such as screens or touchscreens have only a limited own area.

From EP 1 891 499 B1 a domestic appliance with a hideable user interface is known in which an opening in the front of the device is occupied by a plate whose transparency is adjustable from opaque to transparent, whereby the interior of the device from the outside becomes recognizable. In addition, an action performed by the user of the device in its virtual UI can be captured. The display of the information is carried out according to this prior art by means of a projection from the back of the cooking appliance on the front, which means a lot of effort and moreover has the disadvantage that the projection beam is obstructed by occupied in the oven shelf levels at its progress to the front. The present invention is therefore based on the object of proposing a cooking appliance which overcomes the disadvantages of the prior art and provides an indication on which information can be displayed unhindered and in such a size that they are easily recognizable from a greater distance from the cooking appliance, wherein it is still possible, if necessary from the outside to see the inside of the cooking appliance.

This object is solved by the features of claim 1. According to the invention, the cooking appliance is characterized in that the at least one part of the viewing opening has a transparent display which is able to display information.

This ensures that a considerably larger area is provided for displaying information than with the conventional display and / or control panels in the side frame of the cooking appliances, so that information necessary for the user or cook can be seen from a much greater distance and he can constantly inform himself at a large distance from the cooking device about the state or the course of the cooking programs of the individual food items, for example, the display of the Restgarzeit individual food.

In addition, additional information can advantageously be displayed by the larger display and it is possible to provide an improved spatial allocation of the information to the respective cooking chamber areas.

Advantageously, at least a part of the viewing aperture can assume the state semi-transparent, that is to say that the information displayed on the display appears in front of the transparent visible surface, comparable to an on-screen display, whereby the view into the cooking chamber is kept correspondingly low.

Furthermore, it is advantageous that at least a part of the viewing aperture which can be adjusted in its transparency has a transparent touch-sensitive input field, in particular a touchscreen. This ensures that next to one Display can also be made directly input and, for example, the input field in the side frame of the cooking appliance can be omitted. This has the advantage that the side frame can be made smaller, ie can be made narrower or the cooking chamber can be made wider. In the process, the "technical room" will be relocated to the back or down or up. Due to the size of the display, it is also possible to provide significantly more information and input fields.

Furthermore, it is advantageous that the viewing opening is illuminated. This results in a particularly good visibility of the information presented on the Diplay.

Furthermore, it is advantageous that the illumination of the viewing opening takes place from the cooking chamber and / or from the edge region of the cooking chamber door. Thus, the display can be formed up to the size of the entire viewing opening and neither the display nor the view into the cooking chamber is disturbed by lighting devices, located in the cooking chamber internals or food in such a structure does not affect the backlight of the transparent display.

Furthermore, it is advantageous that the transparent display is connected to a controller and an input device and is suitable for displaying the data from the input device on the region of the viewing aperture that is adjustable in its transparency.

The present invention also includes classical input means such as e.g. the entry by selector switch or device-fixed touch panel / touch screens, or the input with additional devices such. PDA, tablet PC, smartphone and smartwatch.

Advantageously, the input device is a relatively small touchpad, which is arranged in a side region of the front side of the cooking appliance or in the door frame of the cooking chamber door of the cooking appliance. For example, the touchpad may have a similar size as a smartphone, the operability of which is increasingly familiar to the broadest sections of the population and thus leads to an easier operability of the cooking appliance. Furthermore, it is advantageous that the transparent display at least partially covers the various cooking zones or insertion levels of the cooking chamber and is suitable for representing the spatially associated information about the different cooking zones or insertion levels. This has the great advantage that an exact assignment of the display is made possible to the corresponding food and information about the appropriate Gargutebene can be displayed according to the right place, so that confusion can be largely avoided. Large cooking appliances can have a variety of shelves, so that it can quickly become confused in the hustle and bustle of the kitchen operation, especially unskilled forces, whereby the kitchen operation is experiencing a corresponding disruption. Advantageously, a direct assignment of information to the corresponding insertion levels is thus made possible. Furthermore, it is advantageous that by means of the transparent display contents or information from any sources, in particular advertising information, layout of the device owner, such as name of the restaurant or information of a computer or notebook represent a large secondary monitor. For example, in a supermarket on the cooking appliance according to the invention, which is behind the Fieischiheke on the cooking chamber door extensively advertised for special offers or special goods. Thus, the cooking appliance according to the invention can be equipped with network interfaces and connections for external storage media such as USB memory, SD memory cards, etc. As a result, information can be transmitted to the cooking appliance. In combination with the present invention, for example, the daily menu of a restaurant can be displayed.

An effective control with small devices such as smartphones or smartwatches is facilitated by an additional monitor. The adaptation of the layout of the cooking appliances, in particular the controls, for OE partners and customers requires a component variation, for example, by a film in the area of the control panel. With a large display area, which provides an area for this customer-specific data, this customization can be supported, if necessary. even the component variation is eliminated. Wetterhin is advantageous in that the cooking device has a sensor for presence detection and the transparent display displays information depending on a presence detection. The display without a recognized user on the cooking appliance could, for example, look like in FIGS. 22b or 22c. Even from a greater distance, the remaining time and the food can be read. If the user steps in front of the cooking appliance, the view into the cooking chamber could be released, cf. Fig. 22a and could possibly. Control elements are displayed. Furthermore, it is advantageous that the area of the transparent display provided for the input is displaceable in its position, in particular height-displaceable, whereby an ergonomic operability is achieved because the input height can be adapted to the size of the operator. Furthermore, it is advantageous that in processes in which the cooking chamber or areas thereof should or should not be visible, the transparent display is total or in these areas in an opaque state can be switched. This transparency primarily concerns cleaning processes of the cooking chamber. On the other hand, it can also be chosen that at the moment in which a food of a rack level cooking is finished, the display in the range of this rack level from transparent to transparent, so that the operator or the chef can immediately recognize that this rack level finished is cooked and can now be further processed or served. Advantageously, the present invention provides a variety of ways of information display, which ensures a fast and secure detection of individual operations and processes.

Furthermore, it is advantageous that safety instructions can be displayed over a large area, which increases the safety of the cooking appliance and its operation. For example, during the cleaning process, a large safety message on the entire door, eg: "Cleaning active. Do not open the door! ", If necessary with appropriate symbols. Advantageously, areas of the cooking chamber that are not covered with food can be highlighted and the display indicates further suitable items to be cooked in this area which, for example, match the cooking climate prevailing in the cooking space, which leads to an optimization of the utilization of the cooking appliance.

Furthermore, with great advantage, the control surface of the transparent display spatially associated with a cooking chamber associated here, which significantly increases their ergonomics. The cooking of the food of a shelf level can be directly influenced and controlled. An input similar to that of Fig. 21 is possible. Peas and beans are selected. In a fully touch-operable display, by tapping the third drawer from below, a selection of suitable items to be cooked opens and by selecting e.g. Carrots are assigned directly to the slot. Furthermore, it is advantageous that information about running cooking programs and consumer information are displayed over a large area. On the one hand, this relates to cooking appliances that can be viewed directly at the point of sale by customers. But even with cooking appliances used in internal operation, there are advantages of quick recognition.

With particular advantage, the display and / or control input of several cooking appliances can be done on a display of a cooking appliance. Thus, the advantage of an operation of several stacked cooking devices, for example, on the upper better accessible display allows, over that cooking appliance, which stands on the floor and allows the saving of the operation on the cooking appliance to be achieved inferior. For example, two ovens or combi steamers can be arranged and connected one above the other. The upper one is equipped with display door and touch screen, whereas the lower one can save the touch screen. The operation then takes place via the upper touch screen while both are displayed.

Due to the size of the display, large operating elements (touchscreen keys) can also be formed. Larger Bedieneiemente can usually faster and easier to use because their accuracy is much higher than on small input surfaces, for example, on the order of smartphones.

An operating section may be arranged in each area of the display surface. For a reduced load due to mechanical shocks and vibrations, the touchscreen can advantageously be arranged on the hinge side of the cooking chamber door.

Advantageously, the viewing opening is formed by a multi-layered plate-shaped structure. This allows a safe and flexible design of the viewing port with display and if necessary. Touchscreen.

It is advantageous that the multilayer plate-shaped structure has an outer glass pane, an inner pane of glass directed toward the cooking space, and a film layer forming the display, which is located on the inner side of the outer pane of glass.

Advantageously, a further touch screen film layer is provided, which is arranged between the display film layer and the outer glass pane, wherein the touch screen film layer is touch-sensitive and preferably formed from a capacitive film layer.

Furthermore, it is advantageous that between the film layer and the inner glass pane, a first space is provided, which is filled with air or vacuum, o- the medium-flowing air or gas is cooled. Thus, the reliability of the display and if necessary. arranged touch screens increased or ensured.

Advantageously, effective illumination is provided by providing at least one lateral illumination which radiates from the frame region of the cooking chamber door into the first free space and illuminates the film layer of the display.

It is particularly advantageous if the lighting is in the form of an LED light bar or a LED light strip. Further details, features and advantages of the present invention will become apparent from the following description with reference to the drawings. It shows:

1 shows a front view of a cooking appliance according to the invention in a relatively large design with a transparent display arranged in the viewing opening of the cooking chamber door and an input device with input field in the side post of the cooking appliance;

Fig. 2 is a similar view of a cooking appliance according to the invention as shown in FIG.

1, but with a significantly reduced input field in the side post of the cooking appliance; on an enlarged scale, the input field of Fig. 2; a schematic representation of an alternative embodiment of the cooking appliance according to the invention to that of Figure 2 with a narrow side post. a schematic representation of another alternative embodiment of the cooking appliance according to the invention of Figures 1 to 4a with an input field in the region of the door frame of the cooking chamber. a perspective photographic representation of another embodiment of the present invention of a cooking appliance with a transparent display over the entire surface of the viewing port; a schematic perspective view of another alternative embodiment of the cooking appliance of Figure 5 of the present invention with indicated insertion levels in the cooking chamber.

7 is a front view of the cooking appliance of FIG. 6 with a closed one

oven door; a sectional view of a first embodiment of a cooking chamber door along the line AA of Figure 7 with a display film layer. a sectional view of a second embodiment of a cooking chamber door along the line AA of Figure 7 with a display film layer. a sectional view of a third embodiment of a cooking chamber door along the line AA of Figure 7 with a display film layer. a sectional view of the first embodiment of a cooking chamber door of Fig. 8a, but in addition with a touch screen film layer; a sectional view of the second embodiment of a cooking chamber door of Figure 8b, but in addition with a touch screen film layer. a sectional view of the third embodiment of a cooking chamber door of Figure 8c, but in addition with a touch screen film layer. a further embodiment of the cooking device of the present invention with height-adjustable input field; another embodiment of the cooking appliance of the present invention with a display indicating information on individual shelves levels; schematically the arrangement of a proximity sensor when approaching a schematically illustrated operator to the cooking appliance according to the invention; schematically an embodiment of the cooking appliance according to the invention with switched to non-transparency or opacity Display, for example, in a cleaning process; schematically an embodiment of the Garge inventive device with the possibility of a custom display einschüeß lent the ability to display other devices; 15 schematically shows an embodiment of the cooking appliance according to the invention with an indication of which rack level is to be loaded next;

16 schematically shows an embodiment of the cooking appliance according to the invention, in which a logo is displayed on the viewing opening, for example a logo

Product logo, assigned to the corresponding shelf level;

17a-d an embodiment of the inventive cooking appliance with an example of the display on the cooking appliance door and operation schematically with a plurality of display panels and a touch

Operating element;

8a-d show a further embodiment of the present invention of the inventive cooking appliance with a further example of the display on the cooking appliance door and operation schematically with a plurality of display latches and a touch control element;

19a-d show a further embodiment of the present invention with superimposed cooking appliances and the operation of both cooking appliances by means of the upper appliance;

Fig. 20a, b, the height adjustment of the display in an inventive

Cooking appliance depending on the size of the operator; Fig. 21 shows the display of other proposals suitable for the current food;

and

Fig. 22a-c show further possibilities of displaying products and related information. In the figures, like elements are designated by the same reference numerals. The various embodiments of the fermenters of the present invention and their elements are all designated by the same reference numerals.

In Fig. 1, an inventive cooking appliance 1 is shown in a relatively large design in front view. The cooking appliance 1 conventionally has a housing 2, on which a cooking appliance door or cooking chamber door 3 is articulated movably and serves to close a cooking chamber 4 arranged in the interior of the cooking appliance 1. The opening and closing of the cooking chamber door 3 by pressing a handle 7 and a corresponding pivoting the cooking chamber door. As can be seen from FIG. 1, to the left of the cooking chamber door 3 is a side post 5, which covers a so-called technical room, in which various elements of the cooking appliance are arranged in a manner known per se, such as liquid supply, electrical control, fan drive, etc. The cooking appliance 1 is based on four cooking appliance feet 6.

In the cooking chamber door 3, a viewing opening 9 is provided, which is usually formed of a transparent glass pane. In the side post 5 is still an input or. Control panel 8 is arranged, which is designed as a small touch screen, whereby by appropriate contact, for example with a finger 10, a corresponding display on a display 1 1 can be caused. The display 11 is in Ausführungsbeispie! By moving the finger 10 in the direction of the arrow 12, a display, shown only symbolically as a circle, according to arrow 16 is moved in the embodiment according to FIG 1, the display of the display and control panel 8 is shown enlarged on the display 11. In Fig. 2, a cooking device 1 is comparable to that of Fig. 1 shown. One difference is the much smaller input or control panel 18, which is shown enlarged in Fig. 3. The reason for this is that a display is omitted, because this is done only via the display 11. For pure input, only a correspondingly smaller area is needed. By means of a wiping movement of the finger 10 According to arrow 12, a display 14 is moved on the display according to arrow 16 from left to right. With the help of this option, a particularly ergonomic way of operating the cooking appliance is created, which ensures the ease of use of the cooking appliance.

The enlarged view in Fig. 3 of the control panel 18 shows that this preferably corresponds to a mouse control panel of a laptop, with a touch panel 50, a left mouse button 51 and a right mouse button 53. Due to the small footprint of the control panel 18, the inventive Cooking device 1 also have a design according to FIG. 4a, with a considerably slimmer side post 5 and if necessary. a wider cooking chamber door 3 with a wider viewing opening 9 and consequently a wider display 1 1. According to embodiment of the cooking appliance 1 shown in Fig. 4b, the control panel 18 is inserted into the door frame 29 of the cooking chamber door and the cooking chamber completely covers the front of the cooking device. 1 ,

FIG. 5 shows a perspective view of another embodiment of a cooking appliance 1 according to the invention, with a cooking chamber door 3 also covering almost the entire front area of the cooking appliance 1 and a correspondingly large viewing opening 9 which is completely occupied by a display 11. The side post 5 is correspondingly formed slim in the housing 2. The cooking appliance 1 is in this embodiment with his feet 6 on a pedestal 45th

As can be seen from FIG. 5, two times are indicated on the display 1 1 and menu displays in the upper area, and otherwise the display 1 1 is transparent and leaves the view free on the insertion levels arranged behind it in the cooking space

4th

In the embodiments of FIGS. 4a, 4b and 5, for reasons of space, the technology room is located, for example, at least partially on the rear side of the cooking appliance. in Fig. 6, an inventive cooking appliance 1 is shown with open cooking chamber door 3. In Fig. 6 can be seen in the open cooking chamber 4 schematically indicated stacked Einschubleisten 13, which have a corresponding counterpart on the other side of the cooking chamber and serve to accommodate inserts occupied with food and thus create stacked shelves.

Furthermore, a drain 15 offset to the left and a heat exchanger 17 arranged below the cooking appliance are indicated schematically. In the bottom 19 a compartment or a drawer 21 is further provided for electronics. In this way, a very compact design of the cooking device 1 can be achieved.

In Fig. 7 the cooking appliance of Fig. 6 is shown with closed cooking chamber door. Schematically, a plurality of lighting devices 31 and 32 are provided in Fig. 7 at the edge of the viewing opening 9 and in the context of the cooking chamber door 3, these better in the alternative embodiments representing Fig. 8a-c and 9a-c are to see a Represent sectional view along the line AA of Fig. 7.

A significant problem with the arrangement of a display and control panel on or in the viewing opening 9 of the cooking appliance door is the prevailing during cooking in the oven temperature that exceeds the allowable operating temperature of conventional displays and touchscreens. For this reason, the present invention proposes a multi-layer transparent cooking appliance face opening 9, which may have the following structure.

In Fig. 8a a first embodiment of the Garaumtür 3 is shown in section. An outer plate-shaped glass plate 25 and an inner, to the cooking chamber 4 facing glass plate 33 define an inner space 37. The inner space 37 is filled with air or vacuum. Alternatively, it can also be cooled by means of cooling air. On the inside of the plate-shaped glass pane 25 is a film layer 23, which forms the display 11. With this embodiment, the advantage is achieved that the flat outer glass provides a flat surface that can be cleaned well and quickly and is relatively insensitive to often rough kitchen operation. In order to increase the thermal insulation, according to the embodiment of FIG. 8a, a further separating disk 35 can be provided in the free space 37 which divides it and forms a separate free space 27. The plate-shaped structure 22 forming the viewing opening 9 is accommodated in a door frame 29. As can be seen from FIG. 8 a, a lighting 31 is located on the vertical inner sides of the door frame 29, which illuminates the free space 37 and thus illuminates the display 11. Correspondingly directed light can also penetrate into the cooking chamber 4. The lighting 31 may be formed, for example, in the form of LED strips.

Instead of a "triple glazing" according to FIG. 8a, FIGS. 8b and 8c only show a "double glazing" in which the central cutting disk 35 is missing. While the third embodiment of Fig. 8c shows the same illumination as that of Fig. 8a, the second embodiment of the cooking chamber door 3 comprises a lighting 32 formed of a double strand of LED lights. Of course, other embodiments of the lighting are possible.

The three embodiments of FIGS. 9a-c differ from those of FIGS. 8a-c only in that, in addition to the display film layer 23, a touch screen film layer 24 is provided, which is arranged between the display film layer 23 and the outer glass pane 25 is. The touch screen film layer may extend over the entire viewing opening 9 or only in partial areas thereof, as represented for example by the input field 41. The touchscreen film layer 24 is designed as a capacitive touch-sensitive layer and reacts when the outer glass pane 25 touches.

FIG. 10 schematically shows an embodiment in which a display and control panel 41 can be displaced in the vertical direction within the display 1 1 in order to assume the optimum height for the operator. The size of the control panel is the device designs reserved, for example, only half the width of the viewing opening 9 or the entire width. The embodiment of the cooking appliance 1 in Fig. 11 shows a schematic arrangement of three display and control panels 41 on the field of view 9, which are assigned to the respective rack level. Thus, the upper display shows the time of 22 minutes and 40 seconds as the remaining cooking time for the food to be cooked, the middle level shows the time of 13 minutes and 20 seconds and the lower level shows the time of 7 minutes and 41 seconds at. Furthermore, the operator recognizes that there is still one insertion level below the top shelf level unoccupied. Due to the size of the display area, the remaining cooking times according to this arrangement example of FIG. 11 can be readily recognized over a long distance, after which, for example, the cook can turn to order other meals in time at another cooking location, such as, for example Gas cooker to the Restgarzeiten suitable prepare. In the right-hand field of the respective display field 41, for example, the corresponding food item could be displayed in the form of a pictogram or photograph, which further facilitates the assignment, in particular in the case of large cooking appliances with a large number of shelf levels. FIG. 12 schematically shows the arrangement of a proximity sensor 43 which, for example, causes the display to light up automatically when a user approaches.

If the device is in certain operating positions such as the cleaning process, the viewing opening 9 can be made opaque by driving the display 1 1, d. H. she becomes intransparent. This is shown in FIG. 13.

Another possibility of using the display 11 is shown in FIG. 14. Further customer-specific information can be made on the display. In a further alternative according to FIG. 15, it is possible to indicate by means of a corresponding indication which insertion level is to be used for the upcoming cooking step.

In Fig. 16, an alternative is shown, the product, which is located behind it in the corresponding rack level in the oven, to display by a logo on the display. To connect the elements used in the cooking appliance door, such as lighting and display and control panel {display and touch screen), a corresponding data and energy transfer is required. Kabe used for this! (not shown) must be able to cope with the mechanical and thermal continuous load.

Hereinafter, further alternative embodiments of the present invention will be described. FIGS. 17a to 17d schematically show the view from the front of a cooking appliance 1 or on the cooking appliance door 3. The door has a peripheral frame and the display 11 corresponds to the entire cooking surface 9. In addition, an input field 41 is provided, for example, as a touchscreen. In Fig. 17a, the food "roast" is selected in the control panel 41. In Fig. 17b this is pulled to the lowest shelf level. In Fig. 17c, the food "vegetables" is selected and in Fig. 17d the vegetables are placed on the second level from below. Thus, the cooking space can be successively occupied. If, according to FIGS. 18a to 18d, not the entire display surface can be operated by touch, a scheme of the cooking chamber can be displayed within the operating element. In this scheme of the cooking compartment, which may have six shelf levels, for example, level 6 is activated and the "roast" food is selected (see Figure 18a) .After confirming this selection, "roast" is displayed at the correct level (see Figure 18b ). Then, for level 5 "vegetables" is selected in the touch area (see Fig. 18c) illustrated and after confirmation of the true position in the cooking cavity. In Figs. 19a to 19d, the cooking appliance 1 is connected to a further cooking appliance 1 ^* and the selection and For example, the cooking chamber 1 and the cooking chamber 2 are displayed in the cooking appliance 1 in Fig. 19a. In Fig. 19b, a decision is made by input to the control panel 41 that the roast enters the cooking chamber 2 of the cooking appliance V arrange is. The selection of the vegetables according to FIG. 19 c takes place, as shown in FIG. 19 d, by selecting the cooking chamber 1 by means of the display and control panel 41.

Reference is now made to Figs. 20a and 20b. In Fig. 20a, a relatively large person is shown on the cooking appliance 1 according to the invention and the display and control panel 41 is located in the upper region of the visible surface 9 of the cooking appliance door 3, which closes the cooking chamber 4. A person 47 has a good view of the high position of the display and control panel 41 due to their height. According to the present invention, an adjustment to the body size of a second person 49, which is smaller than the person 47, can be made, and the display and control panel 41 can be shifted down accordingly, as shown in Fig. 10. In Fig. 21 it is indicated that proposals for other items to be cooked, for example, two inserts further vegetables suitable for the Garraumkiäma for the food beans and peas proposed by the cooking appliance and displayed accordingly. in FIGS. 22a to 22c, further possible displays are shown by way of example: transparent with a small display in accordance with the display and control panel 41, FIG. 22 display over the entire field of view with the warming statement "fresh rolls in 2.00 minutes" or according to FIG. 22c The goods can be displayed buns, with the note that fresh rolls are available in two minutes.

According to the present invention, the Bück in the oven can be made abruptly, in steps or by increasing transparency and exert a signal effect. For example, bakery products are finished in the cooking appliance in an area visible to the customer. When the cooking time has elapsed, the cooking appliance control ends the condition of the viewing opening from opaque to transparent and allows a view of the ready-made baked goods. For example, as shown in Figure 22b, this may be done by connecting the "Fresh Rolls in 2 Minutes" display to an opaque display, and when the two minutes have expired, the display becomes transparent again. The present invention thus provides a cooking appliance which has a considerably enlarged display on which a large amount of information can also be displayed on an enlarged scale, which can also be displayed at a greater distance from the person in charge, the cook or the customer in the store can be easily detected. If the display additionally has a touchscreen function, at least in some areas, then correspondingly comfortable possibilities of operation and device control result, as they were previously not available in the devices of the state of the art.

The invention has been described by way of example in various embodiments of cooking appliances, which are designed in the form of combi steamers. However, the invention also includes crucible-like or pan-type cooking appliances in which the viewing opening is formed in the appliance lid, which may have a similar structure as the cooking chamber door of a combi steamer.

Reference character list - ^■ Cooking device

- ^■ housing

- ■ Cooking appliance or cooking chamber door

- - cooking space

- ■ side posts

- Cooking appliance foot

- • handle

- Input or control panel

- • Visible opening / glass pane

- fingers

- Display

- arrow

- inset

- Display

- drain

- arrow

- Heat exchanger

- Control panel

- Ground

- drawer

- multi-layered plate-shaped structure

- Display Foiienschicht

- Touchscreen film layer

- outer glass pane

- Free space

- appliance door frame

- Lighting

- inner glass pane

- washer

- Free space

- Display and control panel - Proximity sensor - pedestal

- big person - small person - touch control panel - left mouse button - right mouse button

Claims

Patent claims

Cooking appliance (1) with a housing (2), a cooking appliance or cooking space door (3) or a cooking appliance or cooking space lid for opening and closing a cooking space (4) of the cooking appliance (1), and at least one viewing opening (9). the cooking chamber door (3) or the cooking chamber lid, wherein at least part of the viewing opening is able to assume the states transparent and opaque, characterized in that the at least part of the viewing opening (9) has a transparent display (11), which in is able to present information.

Cooking appliance according to claim 1, characterized in that at least part of the viewing opening can assume the state semi-transparent.

Cooking appliance according to claim 1 or 2, characterized in that at least part of the viewing opening (9), whose transparency can be adjusted, has a transparent, touch-sensitive input field (41), in particular a touchscreen.

Cooking appliance according to one of claims 1 to 3, characterized in that the viewing opening (9) is illuminated.

Cooking appliance according to claim 4, characterized in that the viewing opening (9) is illuminated from the cooking chamber (4) and/or from a frame area (29) of the cooking chamber door (3).

Cooking appliance according to one of claims 1 to 5, characterized in that the transparent display (1 1) is connected to a control and an input device (8) and is suitable for displaying the data from the input device (8) in the area whose transparency can be adjusted the viewing opening (9).

7. Cooking appliance according to claim 6, characterized in that the input device (8) is a relatively small touchpad which is in a side area or a side post (5) of the front of the cooking appliance or in the door frame (29) of the cooking chamber door (3) of the cooking appliance (1) is arranged.

8. Cooking appliance according to one of claims 1 to 7, characterized in that the transparent display (1 1) at least partially covers the different cooking zones or insertion levels of the cooking space and is suitable for displaying the information about the different cooking zones or insertion levels spatially assigned to them .

9. Cooking device according to one of claims 1 to 8, characterized in that by means of the transparent display (1) as a large monitor, content or information from any sources, in particular advertising information, layout of the device owner, such as the name of the restaurant or information from a computer or Notebooks or safety instructions can be displayed over a large area.

10. Cooking appliance according to one of claims 1 to 9, characterized in that the cooking appliance (1) has a sensor (43) for presence detection and the transparent display (1 1) displays information depending on a presence detection.

1 1 . Cooking appliance according to one of claims 3 to 10, characterized in that the area (41) of the transparent display (11) intended for input can be moved in position, in particular in height.

12. Cooking appliance according to one of claims 1 to 11, characterized in that in processes in which the cooking chamber or areas thereof should not be visible, the transparent display (1 1) as a whole or in these areas is in an opaque state is switchable.

13. Cooking device according to one of claims 1 to 12, characterized in that areas of the cooking space (4) that are not covered with food are not shown transparently or are hidden.

14. Cooking appliance according to one of claims 1 to 12, characterized in that areas of the cooking chamber (4) that are not occupied by food are highlighted and other suitable food items to be cooked in these areas are indicated on the display (11).

15. Cooking appliance according to one of claims 1 to 14, characterized in that the area (41) of the transparent display (11) intended for input is spatially assigned to a cooking space area associated with it.

16. Cooking appliance according to one of claims 1 to 15, characterized in that information about ongoing cooking programs and consumer information can be displayed over a large area.

17. Cooking appliance according to one of claims 1 to 16, characterized in that the display and / or the control input of several cooking appliances takes place on a display of a cooking appliance.

18. Cooking appliance according to one of claims 1 to 17, characterized in that the viewing opening (9) is formed by a multi-layer plate-shaped structure (22).

19. Cooking appliance according to claim 18, characterized in that the multi-layer plate-shaped structure has an outer glass pane (25), an inner glass pane (33) directed towards the cooking space (4) and a film layer (23) forming the display (1 1), which is located on the inside of the outer glass pane (25).

20. Cooking appliance according to claim 19, characterized in that a further touchscreen foil layer (24) is provided, which is arranged between the display foil layer (23) and the outer glass pane (25), whereby the touchscreen film layer (24) is touch-sensitive and preferably formed from a capacitive film layer.

21. Cooking appliance according to claim 19 or 20, characterized in that a first free space (37) is provided between the display film layer (23) and the inner glass pane (33), which is filled with air or vacuum, or by means of air flowing through or Gas is cooled.

22. Cooking appliance according to claim 21, characterized in that at least one side lighting (31, 32) is provided, which radiates from the frame area (29) of the cooking chamber door (3) into the first free space (37) and the display film layer (23). of the display (1 1) is illuminated.

23. Cooking appliance according to one of claims 4 to 22, characterized in that the lighting (31, 32) is designed in the form of an LED light strip or an LED light strip.