JPS6025690B2 - Programming device for cookers - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a programming device for an electronic control circuit device for adjusting the heat or output of cooking appliances such as electric ovens, electric ranges, microwave ovens, and induction heaters.

The output of the slave was controlled exclusively by a mechanical switch device that switched the strength of the output. Therefore, when performing cooking that requires output switching in multiple steps, the output must be selected for each step, making it difficult to automatically perform a series of cooking operations. Accordingly, the present invention provides a cooking appliance in which multiple levels of output adjustment of the cooking appliance are electronically programmed before the start of cooking, and then the electronic control circuit automatically switches the output. This is what I am trying to do.

Hereinafter, details will be explained using an example in which the present invention is applied to a microwave oven, which is one type of cooking appliance.

Figure 1 is a front view of a microwave oven, and its front shape is:
It consists of a door 1 and a control panel 2 on which control parts such as a timer for setting cooking time are arranged.

FIG. 2 shows an enlarged detailed view of this control panel 2. 3 in the figure is a digital time display for checking cooking time, which is arranged so that hours, minutes, and seconds can be displayed independently. Numerals 4, 5, and 6 are three push spades for setting the cooking time that are placed directly below the display 3, and are placed corresponding to the hour, minute, and second indicators on the display 3, respectively. .

7 is a step indicator of the program step indicator, and push spades 8 and 9 for selecting high frequency output are provided directly below this indicator.
, 10, 11, each push anchor has seven step number display lamps.

When full, push spade 8 is set to "strong", that is, strong output, push button 9 is set to "medium", that is, number output, push button 1 is set to "weak one shell 0", push button 1 is set to low output.
1 is for "defrosting", that is, selecting an intermittent weak output suitable for defrosting. Also, 12 and 13 are respectively “
Control pushbuttons 0 and 14 for “correction” and “pause” are “
The functions of these push buttons will be explained later. Details of a control circuit device for a microwave oven having such a layout of the control panel 2 will be explained with reference to FIGS. 3 and 4.

Fig. 3 is a block diaphragm of a control circuit device for a microwave oven.
This is an ultra-low frequency pulse oscillator that independently generates HZ pulse trains, and these output pulses are input to the display register OREG via two-circuit switches SW4, SW5, and SW6 corresponding to each pusher 04, 5, and 6. .

Note that when the push pins 4 to 6 are pressed lightly, only one circuit of these switches SW4 to SW6 is closed, and the oscillator OSI
2 days and 2 pulses from , and 2 pulses when pressed deeply.
Both circuits are closed and operate so that a 2Hz pulse and a 5Hz pulse are simultaneously input to and output from the register DREG from both oscillators OSI and OS2. This register DR
The contents of the EG are digitally displayed by a digital time display 3. In addition, this register DREG is set to the time, while writing the cooking time by switches SW4 to SW6.
It consists of a 6G counter for timekeeping that prohibits carrying from seconds to minutes so that minutes and seconds can be written independently. In other words, when setting the cooking time, hours, minutes,
Each second counter counts input pulses independently, so for minutes and seconds, after "59" it becomes "0" without carrying, and for hours, after "11" it becomes "0".
”. On the other hand, when measuring time, the circuit is configured such that subtraction is started from the second counter in the lower digits by the IHZ timing pulse from the timing pulse oscillator OSC, and the time counter is sequentially decremented by the minutes in the upper digits. . DETI is a zero detector that detects when the contents of the register DREG are empty, that is, (0:00:00) and outputs a time limit signal, and this power signal causes the cooking of that step to be completed. Next, push buttons 08 and 9 for output selection
, 10, 11 to close the switch SW8, S
W9, SWI0, SWII are for inputting a code signal corresponding to the corresponding output and a code signal representing the opening order of each switch as a step number to the buffer register BREG. "Pause" switch SW corresponding to pushers 01 and 3
A code signal corresponding to a temporary stop is also input from 13.

Moreover, this register BREG is connected to the output signal SP from the one-shot multivibrator MM and the switches SW4 to SW4.
The structure is such that a shift for reading out the contents is performed by a closing signal of one of SW6. Incidentally, each of the above-mentioned code signals was determined as follows in this embodiment. Further, the step number for the "end" and "temporary stop" commands is always set to "0". Sunasop number-
Kogawa To Signal Order 0 000 End (E State 1 00L (H) 2
01'1 Medium (M) 3 ()11 Fishing L) 4 l') {' Defrosting (DF) 5
l 0 l --6
1 l'} --/ 1
1 1 - Stop (STOP) Therefore, it is sufficient for this buffer register BREG to have a 6-bit capacity for temporarily storing one step number and the output command for that step.

PREG is a program memory for storing step numbers and their instructions stored in the buffer register BREG in step order, and is a cyclic shift that is cyclically shifted one step at a time by a shift pulse SP from the one-shot multivibrator MM. It consists of registers.

Note that this multipipulator MM is triggered by the output of the switch SW14 of the "cooking" pusher 14 and the output of the zero detector DETI. Also, this pu. Gram Memory PR
In this embodiment, the EG has a maximum number of output selection steps of seven steps, and has a capacity of 84 bits in consideration of the possibility that a "pause command" may be inserted between each step.Furthermore,
The buffer register BREG and program memory PREG can be configured as either an all-bit serial type or a 6-bit parallel digit-serial type, but in the case of an all-bit serial type register, a serial-to-parallel converter is required on the input/output side. Of course it will become. Also, this memory PR
The output command from E○ is supplied to an output switching circuit (not shown) within the microwave oven body, where the high frequency output is selected according to the command. TDM is the program memory PRE
has a number of addresses corresponding to the step numbers stored in the memory PREG, and writes and stores the cooking time data input in the display register DREG to the corresponding address in accordance with the step number from the memory PREG. This is a time data memory, and in this embodiment, it is composed of a random access memory (RNM).

DRV is a drive circuit for the step display 7 which indicates the step number from the program memory PRE○ and its selection output, and the details of this circuit will be described later. ANDI converts the timing pulse from the timing pulse oscillator OSC to the drop detector DET from the shift pulse generation from the multipipelator MM.
This is an AND gate for supplying the signal to the display register DREG until the time limit signal I is generated, and FFI is a flip-flop for obtaining the time period for this purpose. Also, D
ET2 is "end" (
000) and "pause" (111) are detected and the bell B
This is a detector for sounding L. In addition, "Modify" button 12
The clear signal CL is input from the switch SW12 to the display register DREG, and is also supplied to the program memory PREG and the time data memory TDM.
Next, details of the step indicator 7 and its drive circuit DRV will be explained with reference to FIG.

4 groups of indicators LMm1, each group consisting of 7 lamps for displaying step numbers "1" to "7";
LMP2, LMP3, and LMP4 are four transistors TrH, TrM, TrL, and TrDF for group designation;
7 transistors Trl, Tr for specifying step numbers
The circuit is configured to perform time-division lighting control using transistors TrH, TrM, TrL, and TrDF for group designation, and seven transistors Trl for step number designation. Among Tr7,
Only the lamps connected in series with the conductive transistor can be turned on, and in principle, this time-division lighting control system can light up one group of seven lamps as in this embodiment.
The display device with groups requires only 47=11 switching elements such as control transistors, which simplifies the circuit configuration.

Now, in this embodiment, in addition to general time-division lighting control,
Furthermore, one switching transistor T is replaced with group designating transistors TrH, TrM, TrL, Tr.
A buffer resistor DBG and other logic circuits are provided to connect to DF and control the bases of all these transistors. That is, the output of the flip-flop I source FF2 and the 5Hz pulse from the ultra-low frequency pulse oscillator OS2 are supplied to the transistor Td3 via the OR gate ORI. Also, flip-flop FF2
Circulation shift pulse CP and disc D of the register DBG
BC output command “END” i.e. (000) detector DET
It is set and reset by the delayed output from the detector DET3, and its output is interrupted only during the period until the input of the first cyclic shift pulse CP after the delayed output from the detector DET3 disappears.
In addition, register DBG is connected to memory PR to receive all programs stored in program memory PREG.
It has the same digit capacity as E○. However, this register DBG normally has a circulation path so as to constitute a circulation register, and its contents are shifted at high speed, and its step number and its selected output command are repeatedly read out, and the respective signals are sent to the switching transistors Trl to Tr7. and TrH
, TrM, TrL, and TrDF, and their on/off is controlled to display the display lamps in a time-division manner. However, when the program step progresses, that is, the arrival of the shift pulse SP from the multipipelator MM. Sometimes, the circulation is opened by the inverter NV and the ANDgate AND2, and the circulation of the digit contents of the register DBG is broken. Therefore, the digit contents of the register DBG are the same as the digit contents of the memory PREG at the start of the program step, but as the program step progresses, the digit contents are read out and discarded. In the circuit configuration as described above, the operation thereof will next be explained using a specific example.

First, the program to be executed by this circuit device is set as follows.

Defrosting (DF): 10 minutes → Strong output (H): 1 minute 5 inkstone sand → Medieval power (M): 2 minutes 09 seconds → Low output (L): 5 minutes → Pause (STOP) → Medium output (M) ): 45 seconds → weak output (L)
・5 minutes. Now, when writing the above program into this circuit device, first lightly press the "minute" pusher 5 of the time setting pushers 4 to 6, so that the display on the digital time display 3 changes to (0:1
If the push button 5 is released when the time reaches 0:00), this time setting is completed. That is, when the push pin 5 is pressed down lightly, a 2Hz pulse from the oscillator OSI is input to the minute counter of the register DREG via the switch SW5.
The digit content of register DREG is from (0:00:00) to (
0:01:00), (0:02:00) and increases every pulse until it reaches (0:10:00). This register D
Since the counted contents of REG are displayed on the display 3 every moment, the contents can be easily checked. Therefore, if the push button 5 is released when the display shows (0:10:00), there will be almost no setting errors. Further, the time required to set this 10 minutes is only 5 seconds even when pressing the pusher 05 shallowly. On the other hand, if you are not able to make the appropriate settings due to one's manipulation of the Oshikane 5, if it is less than 10 minutes, simply press the Oshikane 5 again and when the 10 minutes have passed, release the Okibutsu 5. However, if the setting is made for more than 10 minutes, push the push pin 5 deeply and the display will cycle through (0:00:0
0) and approaches (0:10:00) again, the time can be set in the same manner as described above by lightly pressing the push button 5. In addition, even if the push pin 5 is pressed down deeply and the pulse of 5th day 2 is sent to the register DREG, the circuit is configured so that the minute to hour carry will not occur during the time setting, so the display will be (0). :59:00) is followed by (0:00:00). Therefore, there is no need to press the clear button for this time setting. Also, push button 4
~6 The deep press mechanism is not only used when a setting error is made, but also when setting a relatively large amount of hours, minutes, or seconds, such as 50 minutes, press deeply until the time is close to display the display. It can also be used for the purpose of fast forwarding and shortening the time required for setting. Furthermore, the oscillator OS1 used for time setting
, The frequencies 2HZ and 5HZ of the OS2 pulses were determined experimentally in consideration of the followability of human vision, and 2HZ is a frequency that is slower than the time delay time from seeing the display to releasing the push pin. The frequency of 2 on the 5th is high enough to monitor the movement of numbers. Now, after setting the allowance as described above, if you press the "defrost" pusher 011 of the output selection pushers 8 to 11, the register BREG will contain the output command code signal (100) and the step number "1". A code signal (001) corresponding to "" is input.

Also, even if you accidentally operate the other pushers 08 to 10, if you press pusher 011 correctly again, the previously input output command code signal will be changed to the correct output command code signal (10
0).

The contents of this register BREG are the following time setting push buttons 4~
It is transferred to the memory PREG at the timing when 6 is pressed. Further, the time set in the register DREG is also stored in number "1" of the memory TDM. Next, in the same way as last time, program the time and output in the order of 1 minute 50 seconds for high power, 2 minutes 09 seconds for medium power, and 5 minutes for low power, and set them in the memories TDM and PREG as usual. The time, selected output command and its step number are stored.

Now, when the "temporary stop" button 13 is pressed after setting the weak output for 5 minutes, the code signal (000) corresponding to the step number "0" and the output command code signal (111) are input to the buffer register BREO. .

After that, if you input the program again in the order of 45 seconds of medium output and 5 minutes of low output, the time data will be set in the memory address corresponding to each step number in the TDM as shown in Figure 3. time is remembered. Although time is shown in decimal numbers for ease of understanding in FIG. 3, it goes without saying that these decimal numbers are encoded and stored according to the previously determined code. In addition, the program memory PREC
The same contents as those entered in the register DBC shown in FIG. 4 are stored in . In FIG. 4 as well, the contents of this register DBG are shown using decimal numbers and alphabets for ease of understanding, but in reality, these are also stored in code form. Furthermore, register DB○ “END”
is (000) in the code signal, and this "END-1" instruction simply indicates that no other instruction is input into the register DBG, and there is no need to input a special function. The set time programmed according to the procedure and the step number of its output are displayed on the step display 7.

That is, the transistors Trl to Tr7, whose bases are controlled by the step number output of the register DEG, are base-controlled by the selection output command of the register DBG, which selects the number lamps "1" to "7" of the step indicator 7. Transistor TrH. Either TrM, TrL, or TrDF is selected, and the step display 7 shows the screen shown in FIG. 3 or 4.
It will be displayed as shown in the figure. This is a so-called time-division control display system, and requires fewer switching elements for driving lamps. In this type of system, the indicator lamp repeatedly blinks, but if the blinking cycle is short, the afterimage effect in the eye makes it appear as if it were continuously lit. next,
When executing the program set as above, when the "cooking" button 14 is pressed, "DF" of step number "1" in the program memory PRE○ is read out, and the defrosting command is issued by the output switching circuit of the microwave oven itself. (not shown), whose output is selected as the decompressed output. On the other hand, (0:10:00) is read out from the time data memory TDM addressed by the step number "1" of this program memory PREG to the display register DREG, and the ocular output of the zero detector DETI disappears. , a timer switch (not shown) on the main body of the microwave oven is turned on, and a high frequency output for defrosting is output. The contents of this register DREG are subtracted by the IH2 pulse from the clock pulse oscillator OSC. This situation is displayed on the display 3. - On the other hand, the output command in the register D8G on the step display 7 is "END".
” to “DF” and the first cyclic shift pulse CP arrives, that is, while the step number “1” is being read, the flip-flop FF2 is reset. Because it is turned on and off by
The counting content is (0:00:00), and the detector DET
A time limit signal is generated from I, and the timer switch in the main body is turned off. At the same time, the flip-flop FFI stops supplying the clock pulse to the register DREG, and further advances the program memory PRE○ by one step. As the steps progress, the output command "H" of step number "2" is output again, and the output switching circuit is switched to the strong output. Further, from the time data memory TDM, the address "2" to (0:01:50) is read out to the register ORE◯, the time limit output disappears again, and the timer switch is turned on. Then, high-output heating is performed in the same manner as in the previous defrosting operation. On the other hand, register DB
Step number "1" is added to G by proceeding one step.
" is discarded and step numbers "2" to "6" are stored. Therefore, the lamp with step number "1" on the step indicator 7 is not lit, the lamp with step number "2" blinks, and the remaining lamps with step numbers "3" to "6" are lit continuously. In this way step number "4"
When the cooking progresses to the program `` and low output heating is performed for 5 minutes in this step, the next program memory P
From REO, step number “0” and output command “STOP” are sent.
” (111) is read out.

Therefore, the detector DET2 detects (111) and the bell BL for notifying the end of cooking rings. On the other hand, at this time, time data is not read from the time data memory TDM,
The contents of the display register DREG remain at (0:00:00), and the timer switch also remains off. Further, on the step display 7, the lamps of step numbers "5" and "6" continue to be lit. This is because the contents of step numbers "1" to "4" among the contents of register DBG are read and discarded, and the instruction "STOP" (111) with step number "0" is located at the beginning of register D8G. Detector DE
Next cyclic shift pulse C from (000) detection by T3
Until the arrival of P, the transistor T that drives the display 7
None of rH, TrM, TrL, TrDF, Trl to Tr7 are turned on, and even if the transistor T is the oscillator OS
The lamp does not blink even if I repeat on-off with the pulse of 2 on the 5th day of 2. i.e. "pause" while the program is in progress.
If there is a step, the microwave oven body stops its heating operation at this point, the step indicator 7 continues to light up the remaining steps, and the time indicator 3 shows (0:
00:00) is displayed. Therefore, during this temporary suspension period, you can modify the food being cooked and try again with the "cooking" press button 1.
When 4 is pressed, a shift pulse SP is input to the program memory PREG via the multipipelator MM,
The next program step is read and the program proceeds in the same manner as described above. When the operation of step number "6" is completed, (000) is detected again by the detector DET2 and the bell BL rings. At this point all program steps are complete and the step indicator 7
All lamps will turn off. Therefore, the operator is notified that all programmed cooking steps have been completed. In this way, a series of cooking operations are performed according to the type of heating output and the time period for each step that are initially programmed.

Moreover, the progress of the program is always displayed on the step indicator 7.
During the heating operation, the lamp corresponding to the step number being executed flashes, and you can also tell which type of output is selected by the flashing lamp. On the other hand, since the step completion lamp is off, it is easy to see which step the cooking has been completed. Also,
Since the number of the executed program step is turned off in this way, if the program is paused in the middle, only the number lamp of the executed step will continue to be lit, and there will be no flashing lamp, so it will be temporarily stopped. You can immediately tell that it has stopped. By the way, the biggest feature of this circuit device is that once the type of heating output of the programmed step and its setting time remain stored in the program memory PREG and time data memory TDM, the power of this circuit device is not turned off. Its memory contents are retained.

Therefore, if you want to start cooking again using the same program, simply press the "Cooking" button 14 again, and the step indicator 7 will light up again with all the programmed step lamps.
The same operations as described above are repeated and the same program as last time can be executed. On the other hand, if you want to delete the previous program and write a new one, press the "Modify" button 1.
2 to clear the contents of the program memory PRE◯ and the time data memo 1'TDM, and then perform the write operation again in the same manner as described above. As mentioned above, this circuit device uses an all-electronic circuit to program the cooking time and output selection of the microwave oven in multiple steps, and is much more advanced than the conventional device equipped with a mechanical timer. Even complex cooking becomes possible,
Cooking, which used to be time-consuming, can be done simply by programming it.

Further, since time setting can be performed by simply pressing down three buttons for hours, minutes, and seconds, time setting is easier than with a numeric keypad type. Furthermore, the all-electronic control makes the overall size of the control device relatively compact, and if this circuit device is constructed using a microcomputer, it can be made even more compact. In addition to the layout of the control panel of this embodiment shown in FIG.
For example, modifications as shown in FIG. 5 or, for the machine panel, as shown in FIG. 6 may be considered, and furthermore, the arrangement of the lamps of the step indicator may be as shown in FIG. 7. This modification of the layout is due to the fact that this circuit device is all electronic, so the mutual positional relationship of the push buttons and lamp time display displayed on the control panel is restricted by the mounting position of the parts. This feature provides a high degree of freedom in the design of the control panel. Furthermore, the control panel 2 shown in FIG.
In the step indicator 7 above, lamps of the same color are placed under each row of step numbers "1" to "7" for the push pins 8 to 11 for output selection, so that each push pin and the lamp can correspond to each other. On the other hand, the step display 7 shown in FIG. 7 has push buttons 8 to 11 for output selection and step numbers arranged vertically and horizontally, and lamps arranged in a matrix. . As explained above, the present invention provides a cooking device equipped with an electronic memory in which a cooking time of three or more steps and its output can be programmed. A configuration in which a digital time display for display is arranged in one group, and a push spatula for output selection and a step display for displaying the output selected by the push spade for each step are arranged in another group on the panel. Therefore, when selecting and setting the cooking time and output for each step, it can be easily and accurately operated using dedicated push buttons that individually correspond to each display. , the step display for displaying the output for each step has a structure in which a number of display units equal to the total number of programmable steps multiplied by the number of selectable output types are arranged in order in step order; Since the step display is configured to display in the same color as each presser button for output selection and in a different color for each output, it is possible to display each step not only during cooking but also when programming in advance. The output state of the program can be easily grasped at a glance, and the program contents can be monitored extremely easily.

[Brief explanation of the drawing]

Fig. 1 is a front view of a microwave oven for explaining one embodiment of the present invention, Fig. 2 is an enlarged view of its control panel,
Figure 3 is a circuit diagram of the control circuit device, Figure 4 is a detailed diagram of the drive circuit for the step indicator, Figure 5 is a layout diagram of a control panel showing another embodiment, and Figure 6 is a horizontal control panel. FIG. 7 is a layout diagram of main parts of a control panel showing another embodiment of the step display. In the figure, 2 is a control panel, 3 is a digital time display, 4, 5, and 6 are push buttons for hours, minutes, and seconds for setting the time.
7 is a step indicator; 8, 9, 10, 11 are push pins for output selection; 12 is a correction push button; 13 is a temporary stop push button; 1
4 is a push spade for starting cooking, DREG is a display register, TD
M is time data memory, PREG is program memory,
DBG is a buffer register, and DRV is a drive circuit. Figure 1 Figure 2 Figure 7 Ship Figure 5 Figure 6

Claims (1)

[Claims] 1. In a cooker equipped with an electronic memory in which the cooking time and its output can be programmed in 3 or more steps, there is a digital time display 3 for displaying the cooking time, and a cooking time display provided near the digital time display 3. Push buttons 4, 5, and 6 for setting, and a plurality of push buttons 8 for output selection having mutually different colors and provided in one-to-one correspondence with each output depending on the type of output that can be selected. ,9,10,1
1 and its output selection push buttons 8, 9, 10, and 11 to display the output of all steps independently for each step.The total number of programmable steps and the types of outputs that can be selected. It is equipped with a step display 7 in which display parts of the number multiplied by the number are arranged in order in step order, and a push button 14 for starting cooking, and further includes the digital time display 3 and push buttons 4, 5, 6 for setting the cooking time. and the step display 7 and output selection push buttons 8, 9, 10, 1.
1 and 1 as a separate group on the control panel 2, and push buttons 8, 9, and 10 for output selection are arranged so that the output selected for each step is displayed in a different color for each output. , 11, and their respective push buttons 8, 9
, 10 and 11 are applied to each display part of the step display 7.