DE102009001093A1 - Domestic appliance for preparation of food, has cooking chamber, which has inner side retaining elements for retaining preparation device - Google Patents

Abstract

The domestic appliance has a cooking chamber (3), which has inner side retaining elements (6,7,8) for retaining a preparation device (9). A light is projected on the retaining elements for indicating an insertion level (I,II,III), where the retaining elements define the insertion level. An independent claim is also included for a method for operating a domestic appliance.

Description

The Invention relates to a household appliance for food preparation, with a cooking chamber which has receiving elements on the inside, which for receiving a preparation device and for forming insertion levels are designed for the preparation device. The home appliance includes In addition, a projection device with at least a light source, with which light on an object of the household appliance can be projected. Furthermore, the invention also relates to a method for operating a household appliance for food preparation.

So is out of the DE 101 25 247 C1 a household appliance is known in which are positioned on the lateral walls of the muffle, which limits the cooking space, optical markers adjacent to the receiving media for a grill pan, a grid or a baking sheet. Through these receiving elements insertion levels are defined in the oven.

In addition, from the DE 10 2004 036 212 A1 a household appliance device is known, which comprises a projection unit, by means of which light can be projected onto a display means. The display means is disposed in a door of the domestic appliance with the light source positioned outside the door and the light directed into the door and reflected to the display means. You can display symbols, letters or numbers.

It Object of the present invention, the optical display of Information on a household appliance for food preparation with a projection device for a user easier to understand perform and the display clearer In addition, the wear of the Projection device to be reduced.

These Task is by a home appliance, which features according to claim 1 and a device having the features according to claim 15, solved.

One Household appliance according to the invention for preparation of food includes a cooking chamber, which interior receiving elements which comprises for receiving a preparation device and for the formation of insertion levels for the preparation device are formed. The household appliance covers about it In addition, a projection device with at least one light source, with which light can be projected onto an object of the household appliance is. To indicate a shelf level, the light is on this Einschubbene defining receiving element projected. Through this Design is thus created a home appliance, in the quasi not the light source adjacent to the receiving element must be arranged to identify the shelf level, but only the light projected by this light source is illuminated directed this receiving element to the marking of the rack level and reach the receiving element. By this configuration may be the positioning of the projection device with regard to Wear cheaper. In particular, can thus ensuring positioning of the projection device in places be, where the thermal impact on the projection device and in particular can be reduced to the light source.

About that can by such a configuration and a light projection on the receiving element the perceptibility for a user be improved, as the general visual displays of the shelf level more intuitive and easier to understand for a user he follows. The quasi-direct illumination of the receiving element brings a more user-friendly design with regard to recognizability the corresponding rack level.

Preferably is the light source of the projection device above the recording elements arranged. This refinement virtually achieves that the light of the light source coming from above onto the receiving element is projected, whereby thereby no further optical elements More are required, but the emitted light beam of the light source is directed directly to the receiving element. By this configuration a component-reduced arrangement can be created. About it can through this local positioning of the light source as well produces an improved light emission to the receiving elements become.

The at least one light source of the projection device can in one be arranged the muffle limiting the cooking chamber. Preferably provided that the light source behind an inside wall the muffle is arranged, wherein in this inside wall of the Muffel a light passage opening is formed through which the light of the light source in the cooking chamber to the receiving elements can radiate.

The light source is preferably arranged in a control panel of the household appliance arranged above the muffle. In such an embodiment, it is provided that the domestic appliance in the upper region and above the muffle and in particular above the door, which can close the cooking chamber, a control panel with a display unit and / or controls is formed, which is visible and operable from the front. Almost in this control panel, preferably at the cooking chamber facing the lower end of the control panel the at least one light source of the projection device is attached. Due to this configuration, it can be positioned in a space-saving and wear-resistant manner and moreover can be arranged outside the cooking chamber in order to be able to reduce thermal influences.

Preferably is the place of impact of the light on the receiving element so chosen that when inserted on this receiving element preparation device the beam path of the light to this place of impact only then not is interrupted by the preparation device when the preparation device is introduced in its final position. By this specific embodiment and arrangement of the components can be in addition to the display of the desired or correct insertion level beyond that another Functionality are assigned, namely the Recognition of the correct insertion position of the preparation device in a shelf level. The user can thus safely and easily recognize when the preparation device in the correct end position is inserted on a shelf level in the oven. So to speak only when the preparation device is completely correct is inserted into the oven, the path of light is direct released on the receiving element quasi, since the preparation device from this beam path is pushed out and thus this beam path no longer blocked.

Preferably is the optical mark by the light source as a light spot generated on the receiving element. The precise detection is ensured by such a relatively small focussed point, the marking of the receiving element exactly can be done. Unwanted light scatters and illuminations other components in the oven can be prevented and This avoids misinterpretations by a user.

Preferably is the at least one light source of the projection device as formed light-emitting semiconductor device. These are special built compact and allow the emission very thin Light rays with high light intensity.

Preferably the light source is designed as a light emitting diode or as a laser light emitting diode. It can also be a laser pointer or an organic light emitting diode (OLED) be provided.

Next compact design, long life and the like can These light sources are also operated very energy efficient.

Preferably is the projection device for the projection of light information on an edge of the introduced into the oven preparation device educated. In particular, by the projection device Light on the front edge or web of the preparation device be projected. In this context, symbols, letters or numbers projected onto this edge of the prep device become. In particular, this can be done when the preparation device is arranged in its final position in the cooking chamber. So can too with the door closed and the preparation device installed the user during the preparation process further information are displayed. In particular, the door at least partially transparent, the user can thus simple and low-effort and particularly exposed Job received additional information.

The Display of light information can be static or more dynamic Form done. In dynamic form, for example, a rotating symbol or a ticker.

Preferably is the projection device for the projection of light information on the inside of the door to close the door Garraums trained. This may be in addition to or instead be provided to the other projection options. Thereby a user can even at a relatively large distance to the household appliance Take information, as it is only on the closed door must look to get this.

It can also be provided that the projection device for projection is formed of light information on a cooking chamber floor. Furthermore can be provided that the projection of light information even on the lowest, given in each case situation projection surface allows is. Thus, for example, a projection on a medium Supporting surface, on which, where appropriate, food also rests, a preparation device, such a light information be projected.

Preferably the domestic appliance has a door for closing the cooking chamber, which is at least partially transparent. On the preparation device and / or the inside of the Door and / or on a cooking chamber floor projected light information are visible through this door by a user.

Preferably is the light source of the projection device outside of the cooking chamber in the area of a control panel above the muffle arranged and the muffle cover has a hole through which the Light from the light source enters the cooking chamber.

It can also be provided that in the Beam path of the light source of the projection device is arranged an optical element. For example, a lens for light focusing may be provided here. However, other optical elements such as a scribed disc may be provided. This is particularly advantageous in combination with a laser or a laser light-emitting diode, since almost any optical effects can be generated as target aids for the use of the preparation device.

Preferably is the projection device for generating light with different Light color formed. For this purpose, it can be provided that a light source the projection device for generating light with different Light colors is formed. However, it can also be provided that the projection device has a plurality of light sources, from each of which is formed for generating light with a light color is, wherein the light colors of the light sources are different.

By This effect of different light colors can be different Information to be displayed or even different household appliance types be characterized. So it can be provided that at a specific type of household appliance for food preparation the light sources are used with a first light colors, wherein in another household appliance type for the preparation of Food light sources used with a different light color are.

at a method according to the invention for operating a household appliance for food preparation, which a cooking chamber having receiving elements on the inside, which for receiving a preparation device and for education formed by insertion levels for the preparation device is, and a projection device with at least one light source has, with which light on an object of the domestic appliance can be projected, the light is to display a shelf level on the or this insertion level defining receiving element or defining receiving elements projected.

advantageous Embodiments of the household appliance according to the invention are as advantageous embodiments of the invention View procedure.

Further Features of the invention will become apparent from the claims, the figures and the description of the figures. The above in the description mentioned features and feature combination and the following mentioned in the description of the figures and / or in the figures alone shown features and feature combinations are not only in the each specified combination, but also in other combinations or used alone without the scope of the invention to leave.

embodiments The invention will be described in more detail below with reference to schematic drawings explained. Show it:

1 a schematic perspective view of an embodiment of a domestic appliance according to the invention;

2 a schematic perspective view of the household appliance according to 1 ;

3 an enlarged view of a partial section according to 2 ;

4 a further perspective view of the domestic appliance according to the invention 1 ;

5 an enlarged view of a partial section of the illustration according to 4 ; and

6 a schematic representation of a projection device of the household appliance.

In The figures are the same or functionally identical elements with the provided the same reference numerals.

In 1 is a perspective view of a domestic appliance for the preparation of food shown as an oven 1 is trained. However, the domestic appliance can also be provided, for example, as a steam cooker or microwave oven or the like. It is essential that the household appliance has a cooking chamber for the preparation of food, which comprises receiving elements for holding a preparation device, which are displayed by a visual display.

The oven 1 therefore includes a body in this regard 2 in which a cooking space 3 is formed, wherein the cooking space 3 is limited by a muffle unspecified or their walls. Front has this cooking space 3 and thus the muffle on a feed opening, which through a door 4 is closable. In the embodiment shown is the door 4 in the lower part of the body 2 hinged and pivotable about a horizontal axis, leaving the door 4 can be opened down. It can also be provided that the door 4 is laterally hinged and thus pivoted to open to page.

The oven 1 also includes a control panel 5 which is at the top of the back furnace 1 and over the door 4 is arranged in the closed state. The control panel 5 includes unspecified controls and a display unit.

In the oven 3 are receptacles on the vertical muffle walls 6 . 7 and 8th formed, which are arranged one above the other in the vertical direction and extend in a horizontal direction substantially parallel. The recording elements 6 to 8th are also arranged on the opposite side of the muffle and in the illustration according to 1 not visible. Through this paired receiving elements located at the same height insertion levels are defined, wherein the receiving elements 6 the top shelf level I, in the middle receiving elements 7 the second insertion level II and the lower arranged receiving elements 8th define the third shelf level III. The number of shelf levels I to III is merely exemplary.

As recording elements 6 to 8th may be provided in the muffle walls integrated rails or webs. Likewise, however, it can also be provided that the receiving elements 6 to 8th are formed as grid elements and receiving rails for a preparation device 9 form. A preparation device 9 may be, for example, a baking sheet, a grill pan or a grid. In the embodiment shown, the preparation device is on the second insertion level II 9 inserted.

The oven 1 also includes a projection device 10 , which has a plurality of light sources, wherein it is provided in the exemplary embodiment that the projection device 10 a first lighting device 11 and a second lighting device 12 having. The two light devices 11 and 12 are arranged relatively outside and in the area of the control panel 5 or in the control panel 5 arranged. For this purpose, a positioning is selected, which at the bottom of the control panel 5 is provided so that the lighting devices 11 and 12 Light in the oven 3 can radiate. In the exemplary embodiment it is provided that each light device 11 . 12 each having three light sources. The three light sources of a lighting device 11 . 12 are arranged stationary in the embodiment and each positioned so that a first light source of a light device light in the direction of the receiving element 6 , a second light source light in the direction of the receiving element 7 and a third light source light toward the third receiving element 8th emitted. Thus, it is provided that the three light sources of the lighting device 11 Light on those recording elements 6 to 8th emit, which are quasi formed on the opposite vertical wall of the muffle and thus quasi have a further distance, as those receiving elements 6 to 8th which on the adjacently arranged vertical wall of the muffle to this lighting device 11 are arranged. This is analogous with the light sources of the lighting device 12 provided, which are also positioned so that in each case one light source light on the opposite arrangement of the receiving elements 6 to 8th emit.

This is shown by the arrows P1 and P2, whereby it should be symbolized that the light sources of the lighting device 11 emit the light rays indicated by the arrows P1 and the light sources of the light device 12 Emit light rays according to the arrow P2. The projection device 10 is formed so that it is designed to display a shelf level I to III and to the light of the lighting devices 11 and 12 is projected onto this to be characterized shelf level I to III, in which case in particular the light on the insertion elements I to III defining receiving elements 6 to 8th projected.

At the oven 1 is thus provided that the light sources of the projection device 10 relatively widely spaced from the receiving elements 6 to 8th are arranged and only by their relatively wide radiation of the light beams, the optical identification of the insertion levels I to III by light projection on the associated recording elements 6 to 8th he follows. The light sources of the lighting devices 11 and 12 are outside the cooking space 3 and thus also widely spaced from the receiving elements 6 to 8th arranged. In addition, the light sources of a lighting device 11 respectively. 12 arranged relatively close to each other and only by their arrangement with respect to their main radiation direction they are positioned so that the light beam generated thereby quasi on the associated receiving element 6 to 8th meets.

In addition to a design as in 1 is provided, in which the light sources of the light devices 11 and 12 emitted light directly on the recording elements 6 to 8th also can be provided, that in addition an optical element is provided in the beam path of the light sources, which bundles and / or deflects light and / or reflected or the like. In such embodiments, the emitted light of the light sources would thus not directly on the recording elements 6 to 8th be directed, but be projected on corresponding auxiliary components on it.

All light sources of the lighting devices 11 and 12 are positioned above (viewed in the vertical direction) the top shelf level I. That of the light sources of the light devices 11 and 12 generated light is thus always emitted virtually down.

In addition, it is provided that the projection device 10 In addition to its functionality for identifying a preferably to be selected rack level I to III also has a further functionality to the effect that the correct inserted end position of a preparation device 9 is displayed or is recognizable by a user.

For this purpose, as shown in 2 and 3 provided that from the light sources of the lighting devices 11 and 12 projected light, so to speak, to the foremost, the door 4 in the closed state facing ends of the receiving elements 6 to 8th projected. In the inserted state of the preparation device 9 stand these front ends 13 . 14 and 15 the receiving elements 6 to 8th over the front edge 16 over or to the front, and the light of the associated light source strikes again directly on the receiving element. So is in the execution in 2 exemplified that the preparation device 9 is inserted in the second insertion level II and in this regard their end position is shown. That of the associated light source of the lighting device 11 on the receiving element 7 projected light hits at this front end 14 directly on without the beam path through the preparation device 9 would be interrupted. This indicates to the user that the final position of the preparation device 9 in the oven 3 is reached. If this had not yet been achieved, the light emitted by the corresponding light source would not reach this front end 14 but, in this case, then the preparation device 9 positioned further forward on the preparation device 9 to meet. In the enlarged view according to 3 this is recognizable in which the point of light 17 on the receiving element 7 just before the front edge 16 the preparation device 9 on this receiving element 7 meets. The projection device 10 is controlled by a control device, not shown, depending on the input of a user and / or the recognition of a food to be cooked, the most suitable in terms of the best possible preparation result shelf level is displayed I to III. In the execution according to 2 is provided that the user the rack level II is displayed by the fact that the respective light sources of the lighting devices 11 and 12 be activated and are and the two opposite receiving elements 7 at their front ends 14 be optically marked, in each of the points of light 17 projected on it.

The remaining two light sources of the lighting devices 11 and 12 are not activated then.

In addition to the already explained multi-functionality with regard to the display of the correct insertion level I to III and the additional display of the end position of an inserted preparation device 9 can the projection device 10 moreover, have further functionality to convey information to a specific area of the preparation facility 9 projected in the form of light information. This is in the embodiment according to 4 shown that the projection device 10 at least one further lighting device 18 which is substantially in the direction of the horizontal width of the control panel 5 and thus also the cooking space 3 is positioned centrally. Also this lighting device 18 is at the cooking space 3 facing lower side of the control panel 5 outside the oven 3 arranged.

In principle, the arrangement of the light sources of the light devices 11 . 12 and 18 outside the oven 3 also their thermal load during operation of the oven 1 be reduced.

Through this extension of the lighting device 18 For example, by light rays according to the arrow diagram P3, information such as symbols, letters, numbers and the like may be applied to a front-side frame 19 the preparation device 9 be projected. The display field 20 ( 5 ), is positioned so that a user even with the door closed 4 through an existing window of the door 4 can recognize the optical information shown. On this frame 19 in the information field 20 For example, operating parameters can be displayed and / or food parameters can be displayed. Thus, for example, with possible detection of the temperature of the food in the interior and / or exterior of the food this information can be shown accordingly. This is merely an exemplary representation of information and of course a variety of other information can be presented accordingly. Of course, text can also be displayed accordingly.

In addition, it can also be provided that the projection device 10 in particular with its lighting device 18 and / or with their lighting devices 11 and 12 is designed to make visual displays on the inside 21 the door 4 in the transparent area of the door 4 to project. The display options can be further expanded and the user can at a view from the outside even at a relatively large distance to the oven 1 Recognize information. Likewise, the projection device 10 also be designed to visual information display in addition to the representation on the frame 19 also on a middle part 22 the preparation device 9 to generated, this middle part 22 Usually is the one on which the food is positioned.

In particular, in this regard, the project tion device 10 thus be formed so that it is designed for the projection of optical information on that horizontal surface, which makes it possible to emit light on it. Is not a preparation device 9 in the oven 3 arranged, this projection surface can also through the cooking chamber floor 23 be formed. The cooking chamber floor 23 is formed by the bottom of the muffle.

Be in a beam path of a light source of a lighting device 11 and or 12 and or 18 At least one optical element introduced, for example, a scribed disc, so a variety of patterns or the like can be generated. In this regard, for example, then also a plurality of successively arranged points of light can be generated, which on a receiving element 6 to 8th can be projected.

In 6 is a schematic representation of the lighting device 11 shown which the three already mentioned light sources 24 . 25 and 26 having. Through a hole 27 in the ceiling 28 the muffle can do that from the light sources 24 to 26 emitted light into the oven 3 enter and on the respectively associated receiving elements 6 to 8th be projected.

Preferably, the light sources 24 to 26 designed as light-emitting semiconductor devices. Preferably, a light emitting diode or a laser light emitting diode or a laser pointer can be provided here. As a light-emitting diode, of course, an organic light-emitting diode (OLED) can be used.

Preferably, all the light sources of the light devices 11 . 12 and 18 Such emitting semiconductor devices. At least one light source can also be designed to emit light beams of different light color. Likewise, it may be provided that, for example, the light source 24 for emitting light of a first light color and, for example, the light source 25 is designed to emit light of a different light color.

1

oven

2

body

3

oven

4

door

5

control panel

6 7, 8

receiving elements

9

cooking apparatus

10

Porjektionsvorrichtung

11 12

light equipment

16

edge

17

light spot

18

light device

19

frame

20

information field

21

inside the door

22

midsection

23

oven floor

24 25, 26

light sources

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

• - DE 10125247 C1 [0002]
• DE 102004036212 A1 [0003]

Claims (15)

Household appliance for food preparation, with a cooking chamber ( 3 ), which on the inside receiving elements ( 6 to 8th ), which for receiving a preparation device ( 9 ) and the formation of insertion levels (I to III) for the preparation device ( 9 ), and a projection device ( 10 ) with at least one light source ( 24 to 26 ), with which light on an object of the household appliance ( 1 ) can be projected, characterized in that for the display of an insertion level (I to III), the light on the this insertion level (I to III) defining receiving element ( 6 to 8th ) is projected. Household appliance according to claim 1, characterized in that the light source ( 24 to 26 ) of the projection device ( 10 ) above the receiving elements ( 6 to 8th ) is arranged. Domestic appliance according to claim 2, characterized in that the light source ( 24 to 26 ) in a cooking space ( 3 ) limiting muffle is arranged. Domestic appliance according to claim 2, characterized in that the light source ( 24 to 26 ) in a control panel arranged above the muffle ( 5 ) of the household appliance ( 1 ) is arranged. Domestic appliance according to one of the preceding claims, characterized in that the location of the impact of the light on the receiving element ( 6 to 8th ) is selected so that when on this receiving element ( 6 to 8th ) inserted preparation device ( 9 ) the beam path (P1, P2) of the light to this place of incidence not by the preparation device ( 9 ) is interrupted when the preparation device ( 9 ) is introduced in its end position. Domestic appliance according to one of the preceding claims, characterized in that on the receiving element ( 6 to 8th ) to indicate the insertion level (I to III) a light point ( 17 ) is generated. Domestic appliance according to one of the preceding claims, characterized in that the light source ( 24 to 26 ) is a light-emitting semiconductor device. Domestic appliance according to one of the preceding claims, characterized in that the projection device ( 10 ) for projecting light information onto a frame ( 19 ) in the oven ( 3 ) ( 9 ) is trained. Domestic appliance according to one of the preceding claims, characterized in that the projection device ( 10 ) for projecting light information on the inside ( 21 ) a door ( 4 ) for closing the cooking chamber ( 3 ) is trained. Domestic appliance according to one of the preceding claims, characterized in that the projection device ( 10 ) for projecting light information onto a cooking chamber floor ( 23 ) is trained. Domestic appliance according to one of claims 8 to 10, characterized in that the domestic appliance ( 1 ) a door ( 4 ) for closing the cooking chamber ( 3 ), which is transparent at least in some areas and which points to the preparation device ( 9 ) and / or the inside ( 21 ) the door ( 4 ) and / or on a cooking chamber floor ( 23 ) projected light information through the door ( 4 ) are recognizable. Domestic appliance according to one of the preceding claims, characterized in that the light source ( 24 to 26 ) outside the cooking chamber ( 3 ) in the area of a control panel ( 5 ) is arranged above the muffle and the muffle blanket ( 28 ) a hole ( 27 ), through which the light of the light source ( 24 to 26 ) in the cooking chamber ( 3 ) entry. Domestic appliance according to one of the preceding claims, characterized in that in the beam path (P1 to P3) of the light source ( 24 to 26 ) An optical element is arranged. Domestic appliance according to one of the preceding claims, characterized in that the projection device ( 10 ) is designed to generate light with different light color. Method for operating a domestic appliance ( 1 ) for the preparation of food, which has a cooking chamber ( 3 ), the inside receiving elements ( 6 to 8th ), which for receiving a preparation device ( 9 ) and the formation of insertion levels (I to III) for the preparation device ( 9 ), and a projection device ( 10 ) with at least one light source ( 24 to 26 ), with which light on an object of the household appliance ( 1 ) can be projected, characterized in that for the display of an insertion level (I to III), the light on the this insertion level (I to III) defining receiving element ( 6 to 8th ) is projected.