EP1479977A2 - cooking oven device - Google Patents

Abstract

Cooking oven has an electronic controller (2) for controlling the heating arrangement (4, 6) and a display (8) that is designed to display variable information using pixel graphics technology. The display has an additional 7 segment technical component for display of variable numbers and a symbol illumination part for display of user-defined invariable symbols, whereby each technical part is suitable for the optical display of other information.

Description

The invention relates to an oven device containing an electronic control device to control the oven heating device and a display device which for optical display of variable information is formed in pixel graphics technology.

A cooking device of this type is known from DE 198 32 757 C2. It will also be on there noted that there are many technical specialist areas for operating devices is known, programmatically in each case on certain display fields of a graphic, d. H. pixel-oriented, pixel display device, such as a screen Cathode ray monitor, a liquid crystal (LCD) screen, a Light-emitting diodes (LED) screen or a vacuum fluorescent screen (VFD), display selectable commands or functions and either by pressing (Press) the display fields themselves (touch screen) or from next to the Buttons or touch sensors (piezoelectric, capacitive, optical).

From Patent Abstracts of Japan, publication number 63058368 A, application number 61202556, a display device is known for business facilities, which a Dot matrix display part and a numeric and symbol display part contains. The latter includes a 7-segment display for copy enlargement, a 7-segment display for the number of copies, and icon groups to indicate the size and direction of Sheets of paper. Patent Abstracts of Japan, publication number 57125876 A, Application number 56012363, shows an electronic watch with a dot matrix part Display of days of the week and date, and a 7-segment display part for time display. Patent Abstracts of Japan, publication number 05-027529, application number 03-203580, shows a display device for copying machines with a dot matrix part, a numerical and a symbol part for displaying copy information. Control devices for 7-segment display devices show the US 4,270,846 and US 4,994,941.

From practice, an oven device is known, in which in a display user-specific symbols and 7-segments are shown, and in which in texts are shown on a separate plain text display. These display techniques are inexpensive to implement, but they require a large display field and are on the Display of immutable text, immutable symbols and a limited Variability of display variants of the 7-segment display limited.

Another known oven device used for the display of symbols, numbers and Text the pixel graphics technique. The pixel graphics technology has the advantage that on a small Display field changeable in the same or a few different places Symbols, changing numbers and changing texts can be represented. Of the The disadvantage of pixel graphics technology, however, is that it is very expensive. Furthermore, some Symbols are not represented as clearly as they are by unchangeable symbols it is possible which ones can be illuminated.

The object of the invention is to be achieved in an oven device Form the display device in such a way that it is cheaper than the known pixel graphic display technology is that symbols can be clearly visualized even in small form, and that still little display space is required.

This object is achieved according to the invention by the features of claim 1.

According to the invention it is provided that the display device in addition to a Pixel graphics technology part to display changeable information at least one of the two other display technology parts 7-segment technology part for the display of variable numbers and symbol lighting technology part for the display of has custom immutable symbols, with each engineering part for the optical display of other information is formed.

Further features of the invention are contained in the subclaims.

The invention uses a combination of pixel graphics technology with at least one, preferably two other technologies, namely the 7-segment display technology Display of variable numbers and / or symbol lighting technology Display of unchangeable symbols. The pixel graphics technique is used to display Heating type symbols and / or heating type text used. Variable numbers, e.g. B. Temperature, times are shown in 7-segment display technology. Serve in addition user-specific, unchangeable symbols for displaying special Operating conditions. The technical part consists of an electronic part Control device and from a display part. There can be a separate one for each technical part Display plate may be provided. However, for at least two, preferably a single display plate is provided for all three technical parts, all of them Display types includes (pixel graphics technology, 7-segment display and immutable Symbols). The display technology can be in LCD technology (liquid crystal display) or in VFD technology (Vacuum fluorescent display) or in LED (light emitting diodes) or in a mixture of two or three of them. Preferably one Mix of LCD technology or VFD technology with LED modules.

An advantage of the invention is that the type of heating symbol is always present in the pixel graphics located in the same place. This leads to a space saving on the display panel and to design advantages. Special symbols, e.g. B. with round shapes, are as user-defined symbols, which cannot be changed, can be recognized more clearly than Pixel graphic symbols. The effort in the control device is also simplified Control device with additional use of user-defined symbols compared to the representation of symbols only by pixel graphics technology. For the Representation of large numbers is the use of 7-segment representations for the Observer of particularly good legibility, and the technical effort for a 7-segment display is low. When using all three display types in one single display, the assembly effort is also simplified and reduced.

The display part (display panel) of the different techniques is represented by a electronic control device, which preferably contains a computer. This control device can be used in addition to the electronic control device Heating device may be provided. However, it is preferably in the electronic Control device of the heating device integrated, so that its parts functions for Can control the display part. This has a significant reduction the elements and thus the costs and the assembly effort.

Fig. 1

schematisch und verkleinert die Frontansicht eines Backofengeräts nach der Erfindung,

Fig. 2

ein Beispiel einer Ausführungsform für den Anzeigeteil des Backofengerätes nach der Erfindung,

Fig. 3

ein weiteres Beispiel eines Anzeigeteils eines Backofengeräte nach der Erfindung,

Fig. 4 - 7

verschiedene, in Pixelgrafiktechnik darstellbare veränderbare Symbole als Beispiele für eine Vielzahl von möglichen Symbolen.

The invention is described below with reference to the accompanying drawings using preferred embodiments as examples. Show in the drawings

Fig. 1

schematically and reduced the front view of an oven device according to the invention,

Fig. 2

1 shows an example of an embodiment for the display part of the oven device according to the invention,

Fig. 3

another example of a display part of an oven device according to the invention,

Figures 4-7

Various changeable symbols that can be displayed in pixel graphics technology as examples of a large number of possible symbols.

Fig. 1 shows an oven device according to the invention with an oven door 18 for Closing a baking chamber 20. It contains an electronic control device 2 for Control of the oven heater, of which only one radiator 4 for example Top heat and a heater 6 for bottom heat are shown. Furthermore, one Display device 8 is provided, which consists of a display arrangement and a electronic control device exists. Of the display device 8 is only that Front view of a display plate 10 shown, which for the optical display of Information can be controlled by an electronic control device. This can additionally be present, but is preferably at least partially in the electronic control device 2 of the heating device integrated or formed by this.

The display device 8 contains in addition to a pixel graphic display part 12 optical display of changing information and at least one, preferably both of the following display parts: a 7-segment display part 14 for optical display of changing numbers and a symbol lighting display part 16 for visual display of user-defined, unchangeable symbols (Pictograms), each display part 12, 14 and 16 for the display of others Information is trained. The three display parts 12, 14 and 16 in Fig. 1 are only for clearly shown in the order shown side by side, she however, can be used in any other arrangement. The electrical control device controls all three display parts.

The pixel graphics technology part with the pixel graphics display part 12 is preferably for display of changeable heating type symbols depending on the currently set one Type of heating formed, which each on one or more controls 22, 23, 24 or 25, e.g. B. gag is adjustable.

The pixel graphics technology part with the pixel graphics display part 12 can instead of or in addition to indicate a set type of heating by means of symbols also to indicate the relevant one Type of heating can be formed by changing text. There is the possibility of heating types display only by text or only by symbols or both or one Switching option for alternative display of text or symbols to be provided. Which of the possibilities is realized in the oven device depends on costs.

By displaying changeable symbols and / or changeable texts in Pixel graphics technology requires only a small area in the display part 12 since the different symbols or texts alternatively in the same place or closely can be produced side by side.

The adjustable on the controls 22 to 25 and by the pixel graphics technology Types of heating that can be displayed can be, for example: bottom heat, top heat, bottom and Top heat, air recirculation fan with top heat, air recirculation fan with bottom heat, air recirculation fan with Top and bottom heat, grilling and pyrolysis for cleaning the baking chamber 20 through Burning off leftovers. This list is not exhaustive. She closes the Use of other types of heating within the scope of the invention is not sufficient.

The 7-segment technology part with the 7-segment display part 14 can, for example an operating time set on one of the controls or one after Setting the remaining operating time during the expiry of a Heating program are displayed. Alternatively, the display of the respective Time of day, possibly also the display of days of the week. Also this list is not exhaustive and excludes the display of others Information from the 7-segment display technology part is not sufficient, e.g. B. the display of the im Baking room 20 each current temperature.

The custom unchangeable symbols of the symbol display part 16 can For example, the following symbols can be: Oven appliance switched on, alarm symbol for a predetermined operating state, clock symbol as an indication of a on the 7-segment display technology part set operating time, symbol to indicate a Predefined program switched on, end-of-program symbol, symbol as information for a quick heating setting, symbol for the switch-on state or the Childproof lock switched off. Instead, or in addition, others can Icons for other and additional information may be provided.

The display panel 10 can be designed in LCD technology, VFD technology or in LED technology his. A combination of LCD technology or VFD technology is preferred and on the other hand uses LED technology. It is also a combination of LCD technology and VFD technique or possible from all three techniques.

FIG. 2 shows a front view of a possible embodiment of the display panel 10 from Fig. 1. In the upper area is the pixel graphic display part 12. In this are for example the texts top heat, bottom heat, top / bottom heat, grilling and the like alternatively displayable. As an example in the left part 12-1 is the text upper / lower heat illuminated and thus displayed. At the same time, a symbol corresponding to the text in Pixel graphics technology displayed in a section 12-2 to the right of it, whereby in In the present case the symbol for top heat and bottom heat is indicated by appropriate lighting. If the on the relevant control element 22 to 25 Operating mode set simultaneously using text at 12-1 and symbols at 12-2 is displayed, this is particularly noticeable for one person.

Furthermore, the display plate 10 of FIG. 2 contains the in a middle, lower area Display part 14 of the 7-segment technical part. As an example, the display part 14 contains two 7-segment display parts, of which one 7-segment display part 14-1 the remaining Operating time of an operating time set on one of the control elements 22 to 25 for a specific heating process, for example the remaining one Operating time of 55 minutes. The other 7-segment display part 14-2 shows that current temperature of, for example, 200 ° C. in the baking chamber 20 (or the Temperature of a food in the baking chamber 20).

Furthermore, the display plate 10 contains the display part 16 for displaying at least one immutable symbol. For example, this display part 16 is on two Display areas divided, the left and right of the 7-segment display part 14 are arranged. This display part 16 has at least one unchangeable symbol, in the present case, for example, the following symbols can be indicated by appropriate lighting: an alarm symbol 16-3; a symbol 16-4 for optical Indication that an operating time is switched on for a certain type of heating; on Symbol 16-5 to indicate that a child lock is activated; and an icon 16-6 to indicate that a rapid heating mode is switched on.

In the context of the invention, the type of heating is synonymous with the type of operating program and thus each with a switchable oven operating program.

Fig. 3 shows a front of the display panel 10 of Fig. 1, which is substantially the same is designed like the front panel of Fig. 2, but with the exception that in Display part 12 of the pixel graphics technology part the simultaneous activation of top and Bottom heat is only indicated by a text top / bottom heat, but not at the same time by an additional symbol as in FIG. 2. Like a comparison of FIGS. 2 and 3 shows with each other, a text display without a symbol according to FIG. 3 is less noticeable and less clearly recognizable to an operator than the simultaneous display information by text and symbol corresponding to FIG. 2.

In the display part 12 of FIG. 2, instead of the symbol there, using pixel graphics technology any other symbol can be displayed, with or without associated text. For example, of various symbols used by the pixel graphics technology part can be optically indicated by appropriate lighting in the display part 12, 4, 5, 6 and 7 are shown as examples of a multitude of possibilities. 4 shows a symbol for "grilling on a grill with fan air circulation "; FIG. 5 shows a symbol for "Grilling on a spit"; 6 shows a symbol for which can be represented by pixel graphics technology "Defrosting food in the baking chamber"; and Fig. 7 shows a by pixel graphics technique Representable symbol for a pyrolysis process to burn off food residues and to clean the baking chamber 20.

Claims (10)

Oven device containing an electronic control device (2) for controlling the oven heating device (4, 6) and a display device (8) which is designed for the optical display of variable information in pixel graphics technology, characterized in that the display device (8) in addition to a pixel graphic Technical part (12.2) for displaying changeable information also has at least one of the other two display technology parts 7-segment technical part (14.2) for displaying variable numbers and symbol lighting technology part (16.2) for displaying user-defined, unchangeable symbols, wherein each technical part is designed for the visual display of other information. Oven device according to claim 1, characterized in that the display device (8) in addition to the pixel graphics technology part (12,2) also has the 7-segment technology part (14,2) and the symbol lighting technology part (16,2) for display of each other's information. Oven device according to one of the preceding claims, characterized in that the pixel graphics technology part (12, 2) is designed to display variable heating type symbols (12-2) as a function of the heating type set in each case. Oven appliance according to one of the preceding claims, characterized in that the pixel graphics technology part (12, 2) is designed for the optical display of variable texts (12-1) depending on the type of heating set in each case. Oven device according to one of the preceding claims, characterized in that the heating types include at least two of the following types: bottom heat, top heat, bottom and top heat, air circulation fan with top heat, air circulation fan with bottom heat, air circulation fan with top and bottom heat, grilling, pyrolysis. Oven device according to one of the preceding claims, characterized in that the variable numerical values include the visual display of the set or remaining operating times for certain operating modes and / or a temperature display of the baking chamber temperature. Oven device according to one of the preceding claims, characterized in that at least one of the following symbols is provided as user-defined, unchangeable symbols: symbol for oven device switched on, alarm signal for a predetermined operating state, clock symbol as an indication of an operating time set on a clock or still remaining, symbol for Program switched on, symbol for end of program and / or symbol for rapid heating switched on. Oven device according to one of the preceding claims, characterized in that the optical display parts of at least two of the three technical parts (12.2; 14.2; 16.2) are integrated in a display plate (10) common to them. Oven device according to one of the preceding claims, characterized in that the optical display parts (12, 14, 16) of the technical parts are designed in at least one of the following techniques: liquid crystal display (LCD: liquid crystal display), vacuum fluorescent display (VFD) or light emission display technology (LED: light emitting diodes). Oven device according to one of the preceding claims, characterized in that the electronic control device (2) of the oven heating device is also designed to control the display parts (12, 14, 16) of the display device (8).

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