DE2731970A1 - CONTROL ARRANGEMENT FOR THE DISPLAY PANEL OF AN ELECTRONIC LOCKER TIMER - Google Patents

Description

The invention relates to a control arrangement for the display panel of an electronic stove timer with a digital one Display to show the current time and / or other data.

It is already an electronic stove timer with a digital display of the time and, optionally, the cooking duration and the start of cooking become known, in which the data is entered using various keys.

An electronic stove timer has also already been proposed (patent application P 26 31 590.2) which the input of the relevant data for the stove timer takes place by means of a rotatable pulse generator.

It is the object of the present invention to provide an electronic stove timer with an automatic control for the The roasting process is equipped with a particularly simple and practical setting option and display of the for to provide relevant data to the automatic roasting system.

To solve this problem, the invention proposes that a known rotatable pulse-generating actuating element (Pulse generator) to adjust the digital display is provided, that also to facilitate the setting and for longer continuous display of the data for the automatic control of a roasting process a light field controllable by the pulse generator is provided, which from a first number of light points, the different temperature values of the roasting room of the Cooker are assigned, and consists of a second number of luminous dots, assigned to different roasting times of the food to be fried are that there is still an actuating element for activating the light points for the temperature or roasting time are present and that finally an electronic control circuit is provided and designed such that when setting the frying temperature on the digital display on the

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Illuminated field of the relevant temperature and when setting the roasting time, the light point assigned to the relevant roasting time lights up.

The basic idea of the invention is thus that on the rotatable pulse generator data for the temperature and the The roasting duration of the food to be roasted can be entered, with a luminous point assigned to this data, which may be used. carries a corresponding symbol lights up. In this way, the operator can based on the light points both at the setting as well as later during the roasting process very quickly overlooked which data have been entered without, especially during the cooking mode, the data entered on the display, which in normal mode only shows the current time indicates that it has to be called up by pressing a button.

Further features of the invention are characterized in the subclaims ,

In the following, the invention will be explained in more detail with reference to the drawing using an exemplary embodiment.

Show it:

1 shows a possible embodiment of a rotatable pulse generator known per se;

Fig. 2 is a view of the control panel of an electronic oven timer with automatic roasting according to the invention;

3 shows an embodiment of the control arrangement for the display panel according to FIG. 2.

In Fig. 1 is a pulse generator for generating setting pulses for a display denoted by 1, which in conjunction with the

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The control arrangement described below for an electronic stove timer is used and in which a pulse wheel is made of insulating material, primarily abrasion-resistant plastic, in the body of which an electrically conductive contact ring with a large number of electrically conductive contact blades 4 arranged in a star shape is molded. These contact lamellas are guided radially outward to the smooth circumferential surface of the pulse wheel 2 and there, with their outer cross-sectional surfaces, are designed as contact surfaces 5 for generating pulses. A contact spring 6 resting on the smooth circumferential surface of the pulse wheel 2 is provided as a sensing element, at the tap 6a of which the contact surfaces of the pulse wheel can slide without bouncing when it is rotated. This contact spring 6 and a contact spring 7 sliding on the contact ring 3, via which an electrical circuit for generating a pulse can be closed, are designed as leaf springs clamped on one side, the ends of which are connected to a pulse shaper 8. The pulse shaper 8 is followed by a signal path switch 9, which is connected to a switching device 10 for up and down counting pulses. This device has an arm 11, which does not have a
explained in more detail clutch with a switching disk 12 with the
Pulse wheel is in communication. Depending on the direction of rotation of the pulse wheel 2, the arm 11 rests against a contact 10a or a contact 10b of the switching device 10 and transmits the forward or Backward impulses of the impulse wheel to one or the other contact. Finally, 13 denotes a detent spring which engages in a detent toothing 14 on the pulse wheel 2.

In Fig. 2, the control panel of an electronic stove timer with automatic roasting is shown, in which two rows of side by side and individually illuminated small
Light fields 15 and 16 are available, which different
Bear symbols. The top row 15 contains the first letters of various types of meat, namely veal, poultry,
Pork and Beef, the bottom row contains 16

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Weight specifications for the food from 0.5 to 2.5 kilograms. Next to this light field is an actuation button "BA" for the Switching on the automatic roasting, below the light field an actuation button "T" and an actuation button "D" for Selection of the corresponding row 15 or 16 of the light field provided. The symbolism is chosen so that the different Meat types are assigned different frying temperatures, namely veal the lowest and beef the highest frying temperature. Furthermore, different weights of the food to be fried are assigned to different frying times. This symbolism is the result of extensive attempts at roasting, which have shown that different types of meat are different Roasting temperatures and different meat weights require different roasting times. In the present case temperatures are set when the "T" button is pressed in the device, whereas the assigned temperatures are set on the light field Types of meat shown. It is the same when the button "D" is pressed, whereby different roasting times are selected in the device, on the other hand, different weights are displayed on the light field.

On the control panel of the electronic stove timer is also a digital display 17, for. B. an LED display is provided. This display shows the current time with hours and minutes. By pressing the "T" button or "D" the time disappears and is shown on the display The temperature can be displayed in degrees Celsius or the roasting time in hours and minutes.

Finally, a rotatable pulse generator 18 is also provided, as explained with reference to FIG. 1. With this pulse generator, on the one hand, the time can be set and, on the other hand, the temperature or roasting time can be set on the display ^{when the buttons 11 T "or" D "are pressed} Luminous field rows 15 or 16 that symbol

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lights up which is assigned to the temperature set on the display 17 or the duration set there. For example, when the temperature is set to 140 °, the symbol K for veal lights up on the row of illuminated fields 15. If you continue to turn the temperature display and set a temperature of z. B. 180 °, the symbol "S" of the row of luminous fields 15 lights up. A corresponding operation results when pressing the button "D ^M and setting z. B. a roasting time of 1 1/2 hours. In this case, the symbol is illuminated on the lower row luminous field 16 0.5 for a quantity of meat of 0.5 kilograms As the pulse generator 18 continues to rotate, the other symbols in the row of illuminated fields 16 light up one after the other.

Although roast is always mentioned in the foregoing and in the following, it is of course also for the purposes of the invention Control of a baking or a keeping process possible.

The mode of operation of the control, shown only schematically in FIG. 2, for the light field of an electronic stove timer with automatic roasting will be shown in more detail with reference to FIG. 3 explained below. At the rotatable encoder 18, an input selection switch 19 closes on, may be what is switched from the already explained in Fig. 2 operating buttons "T" and "D" and its input signal either ^"n T or to the output" to the output D "outputs. the output" U "of the input selector switch includes an electro-generic clock 20, which is synchronized by the network. Since such watches are already well known, is omitted here for a detailed explanation. an ⁿ the output T "of the input selection switch 19 is followed by a counter which counts the bits generated by the pulse generator 18 and which is used to store the entered temperature values. A counter 22 connects to the output ^W D ″ of the input selection switch 19, which is used to count the input bits

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is used for the roasting time and saves this in minute values.

A decoder 23, which is formed by a programmable logic matrix, connects to the output of the counter 21. Such a matrix is available as a commercially available component under the designation JM 5200FPLA. Instead of one Logic matrix within the meaning of the invention, however, it would also be possible to use a ROM memory as a decoder. This decoder outputs the data entered to it only in a predetermined range of values, in the present case only temperature values in the range between 140 ° and 190 °. The row of luminous fields 15 already explained with reference to FIG. 2 is connected to the decoder 23, which has the symbols for different types of meat on several small luminous fields. At the output of the counter 22 This is followed by a decoder 24 similar in structure to the decoder 23, at whose outputs the second row of luminous fields 16 which carries symbols for the different meat weights.

The electronic clock and the counters 21 and 22 are via three AND gates 25, 26 and 27 and an OR gate 28 with the digital display 17 connected. The actuation button "BA", which has also already been briefly explained with reference to FIG. 2, is depending on the intended design of the control arrangement, with the Decoders 23 and 24 connectable; however, as will be explained below, this connection can also be omitted. With the Actuating button "BA" are also one or more lamps connected, which for switching on a backlight for the rows of light fields 15 and / or 16 when the operating button is pressed "BA" serve. Finally, this button "BA" is directly connected to the heating circuit of the roasting oven of the range tied together.

The mode of operation of the control arrangement according to FIG. 3 is readily understandable from the explanations given above. Without pressing the "T", "D" or "BA" buttons, the

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Display 17 shows the current time generated by the electronic clock 20. Should now data for the automatic control a roasting process are entered, the "BA" button is pressed and the decoders 23 and 24 are prepared. For To enter the frying temperature, press the "T" button, which switches the input selection switch 19 to the "T" output and the pulses generated by the pulse generator 18 after it has been rotated are passed on to the counter 21. By pressing the button "T" prepared not only the AND gate 25, but also the AND gate 26 via the negated one Input blocked, so that the display of the current time on the display 17 is interrupted and the display of the Temperature can take place there. Corresponding output signals are emitted from the counter 21 to the decoder 23, whereby as soon as temperature values above 140 ° can be entered there, depending on the entered temperature value, one of the ones in the row of illuminated fields 15 indicated symbols for the type of meat to be roasted lights up.

After entering the temperature values, the button ¹¹ D "is now pressed and the input selection switch 19 is switched to the" D "position, whereby the frying temperature in minutes can now be entered in the counter 22 via the pulse generator 18. By pressing the button"" D ", the AND gate 26 was blocked and the AND gate 27 was prepared for switching the entered roasting duration values through to the display 17. The decoder 24 converts the output signals of the counter 22 into control signals for the row of luminous fields 16 on which, depending on the entered roasting time one of the light fields with a symbol for the meat weight assigned to the entered roasting temperature lights up.

While the respectively selected light field of the light field row 16 or 16 lights up strongly, the lamps 29 become weak Background lighting generated for both rows of light fields, as a sign that the automatic roasting function is switched on.

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The particular advantage of the above-described mode of operation is that the user either reads the values to be entered on the digital display or, if he only knows that z. B. veal with a weight of 1 kilogram is to be roasted, the light fields with the symbols "K" or ^W 1 "observed on the light field rows 15 and 16 and activates the relevant light fields by actuating the pulse generator The pulse generator described in FIG. 1 consists in the fact that it can be actuated in the forwards and backwards direction and thus the rows of light fields 15 and 16 can be "traversed" from left to right and vice versa.

The mode of operation of the control arrangement just described results for the case that the Heid switch clock is only for automatic Roasting is suitable, which is why the actuation button "BA" is connected to both decoders 23 and 24. Should, however In addition to the option of automatic roasting, the various roasting temperatures can also be set manually Roasting times are possible, the specified connection of the actuating button "BA" is dispensed with. In this case You can set the roasting temperatures or roasting times in the manner already described without pressing this "BA" button will. If the roasting process is to run automatically, the "BA" button is pressed after entering these data and the stove heating is switched on and a roasting program specified in the stove is run through. Should, however, the roasting process do not run automatically, the button "BA" is not pressed and the stove is set to the set in the usual way Frying temperature and switched on for the entered frying time.

Instead of the control arrangement shown in FIG. 3, it is also possible within the meaning of the invention to add a microprocessor use, in which the functions described above are controlled by program.

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Claims (12)

P 480 tWfta Company D I E H L, Stephanstr. 49, 8500 Nuremberg Control arrangement for the display panel of an electronic Stove timer Patent claims: Control arrangement for the display panel of an electronic stove timer with a digital display for display the current time and / or other data, characterized in that a known rotatable pulse generator Actuating element (pulse generator) (1, 18) for adjusting the digital display (17) is provided that also to facilitate the setting and for the longer-lasting display of the data for the automatic Control of a roasting process is provided with a light field (15, 16) which can be controlled by the pulse generator (1, 18) and which from a first number of light points, which are assigned to different temperature values of the roasting room of the stove, and consists of a second number of luminous dots which are assigned to different roasting times of the food that is to be roasted furthermore one actuating element (T, D) for activation - 2 809883/0522 ORIGINAL INSPECTED the light points for the temperature or roasting time are available are and that finally an electronic control circuit (21 to 28) is provided and designed such that When the frying temperature is set on the digital display on the light field, the one assigned to the frying time in question The luminous point lights up. 2. Control arrangement according to claim 1, characterized in that the luminous field is arranged in two rows (15, 16) There is luminous dots, of which one row (15) is assigned to the temperature and the other (16) is assigned to the roasting time. 3. Control arrangement according to claims 1 or 2, characterized in that that each luminous point represents a small luminous field that can be illuminated by itself. 4. Control arrangement according to claims 1 or 2, characterized in that that each light point is realized by a light emitting diode. 5. Control arrangement according to claims 3 or 4, characterized in that that each luminous point bears an imprint or one is assigned to it. 6. Control arrangement according to one or more of claims 1 to 5, characterized in that those associated with the temperature Luminous dots (15) carry symbols for the food to be fried. 7. Control arrangement according to one or more of claims 1 to 5, characterized in that those associated with the roasting time Luminous dots (16) carry symbols for the weight class of the food to be fried. 8. Control arrangement according to claim 1, characterized in that the control circuit consists of one of the pulse generator (1, 18) - 3 809883/0522 controlled microprocessor, which controls the individual functions on the light field by program. 9. Control arrangement according to claim 1, characterized in that the control circuit each one of the temperature and one the duration associated counter or memory (21, 22), an input selection switch (19), two decoders (23, 24), of which at least the first of the values entered by them are only those in a predetermined one, the symbols on the light field outputs assigned value range, and has a plurality of logical linking elements (25 to 28). 10. Control arrangement according to claim 1, characterized in that the pulse generator (1, 18) has several arranged on it has pulse-generating elements (4) and a sensing element (6) that scans them, the pulse-generating Elements and the sensing element for generating pulses for changing and adjusting the display can be rotated against each other are. 11. Control arrangement according to one or more of the preceding claims, characterized in that an actuating switch "Automatic roasting" (BA) is available, the actuation of which is a prerequisite for the controllability of the light field (15, 16) through the pulse generator (1, 18). 12. Control arrangement according to one or more of the preceding claims, characterized in that the luminous field (15, 16) can be controlled by the pulse generator (1, 18) without prior actuation of an "automatic roasting" switch (BA), the latter only being used to switch on the stove's heating. 809883/0522