JPS58214718A - Electronic control type cooking utensil - Google Patents

Abstract

PURPOSE:To contrive the selective setting the timer time or the temperature only by a knob manipulation of the titled device by a method wherein a specific displacement position of a knob is provided on the one knob for either the timer time or the temperature inputting, and when one knob is set at the specific position, the inputting from the other knob is made inactive. CONSTITUTION:A specific graduation indicated a ''TIME'' is provided on the periphery graduation position of a temperature setting knob 6. When the knob 6 is set at said specific graduation, the knob is considered as set at the specific displacement position. By an electronic control program setting, as far as the knob 6 is not at said specific displacement position, only the temperature inputting is made possible, inversely, as far as the knob 6 is at said position, only the timer time inputting is made possible. Thereby, the confusion of the manipulation of two knobs 5, 6 can be prevented, also the complicated operation which signifies each data by using a function-key which corresponds to inputting of timer time or the temperature can be dissolved.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to an electronically controlled cooking appliance such as a microwave oven equipped with a microcomputer.

This type of cooking device is equipped with a keyboard as a means for inputting cooking conditions, and the cooking conditions are set by operating various function keys and numerical keys of the keyboard in combination.

That is, for example, in the case of timer cooking, the timer function key is used to instruct timer cooking, and the numeric keys are used to input the desired timer time, and in the case of temperature operation, the temperature function key is used to input the desired timer time. The number keys are used to instruct the cooking temperature, and the number keys are used to input the desired finishing temperature.

As described above, in the conventional technology, when inputting data such as timer time and temperature, it was necessary to use a corresponding function key to give meaning to each data, and the operation was quite complicated. .

The present invention has been made in view of the above points, and will be described below with reference to Examples.

FIG. 1 shows the appearance of an example cooking device (1). Cooker (1
) is equipped with a side-opening door (2) for opening and closing the cooking chamber and an operation spring (iv) (3) arranged in parallel with the door.

FIG. 2 shows details of the operating spring /I/(3). Display section (
4) is not from a well-known fluorescent numeric display tube, etc., and the time as shown in Figure 6A (2:10 minutes in the figure) and the timer time as shown in Figure 6B (15 minutes in the figure) 60 seconds), Figure 6C
Temperatures as shown in (in the case of the figure, 60'C) are selectively displayed. Both the timer time setting knob (5) and temperature setting knob (6) are rotatably variable.

When setting the timer time and temperature, place the pointers of each knob, indicated by arrows in the figure, at the desired scale position. At the scale position around the temperature setting knob (6),
Furthermore, if there is a specific scale mark marked as TIME"', from now on, when the knob (6) is at that specific scale mark, the knob (6)
) is said to be at a particular displacement position. 5TART key (
The 7) and 5TOP keys (8) are function keys for starting and stopping cooking, respectively, and the TOD key (9) is a 77-digit key for adjusting the current time.

FIG. 4 shows the electric circuit of the cooking device (1). The microcomputer (hereinafter referred to as μ (30M) αO) includes a 60Hz signal generation circuit 02 whose signal source is a commercial power supply 01).
), the 6Q Hz signal TB is always input.

μCOMα0) always measures the current time based on the signal TB, and in the cooking standby state, the display drive circuit α3)
to display the above-mentioned current time on the display section (4). The current time is corrected based on the TOD key (9) signal input to μCOM (IQ) via the interface (19).

The μCOM (10) outputs a heating instruction signal HP using the timer time and temperature inputted by the timer time input means (50) and temperature input means (50) as heating conditions, and connects the switching circuit (IG+) to the commercial power source. (11) Other heating source (17
) to supply power. To start or stop cooking, use the aforementioned 5TART key (7) or 5TOP key (
Based on the signal of 8).

The timer time input means group includes the aforementioned knob (5), and further includes a variable resistor (51J) rotated by the knob and a coded digital signal corresponding to the voltage υ determined by the resistor. In other words, when the knob (5) in the input means (2) is displaced to a desired position, a signal corresponding to the timer time on the scale of the displacement position is generated, This is sent to μCOM (1).Similarly, the temperature input means (60) is connected to the already mentioned knob (6).
Equipped with a variable resistor (61) and an A/D converter M,
A coded digital signal corresponding to the temperature at the position of the knob (6) is generated and sent to μOOMQQ). μCOM
When an input operation is performed using each of these input means, α0) causes the timer time and temperature to be displayed on the display unit (4) as described above.

The heating source α7) generates thermal energy for cooking, and is composed of a microwave oscillation circuit including a magnetron, an electric heater, and the like.

In the case of temperature cooking, a temperature detector (18) such as a mister is inserted into the food to be cooked, and a digital signal corresponding to the temperature of the food is sent from the A/D converter a9) to the μCOM (10).
) will be sent to. The μOOM (10) displays the measured temperature on the display section (4) as described above.

The door switch (4)) sends a signal to μCOMα0) when the door (2) is opened, and μOOM (IQI) interrupts cooking when it receives such a signal during cooking. Figure 6 shows the program stored in the ROM of (IQ).
' Indicates the LAM area. That is, μCOM (101 is the above RA
Using the data in M, the cooking appliance is controlled according to the above program.

In Fig. 5, each block numbered 80, 81, 82, etc. indicates each length step of the control, and each step of the program proceeds to the arrow 11@ after turning on the power to the cooker. . The control contents at each step 81 to 848 of the program will be explained below together with the RAM area shown in FIG.

8o: RAM clock area, that is, TOD that stores the current time
, the contents of each area of the counters CL and 0OUNT for measuring time based on the already mentioned 60Hz signal TB are cleared.

81: Clear all remaining 9 areas of RAM. Note that this clearing also includes turning off the heating instruction signal UP.

S2: The output signal of the timer time input means group is input to the RAM TI.
The output signal of the temperature input means (60) is also input to ME and L.
Read into TEMP and L respectively.

83: Set RAM flag F (CLOOK). This flag is used to indicate the current time display state.

84: When F (CLOCK) is in the set state, I
DISPLA the contents of LAM's TOD (i.e. current time)
Write in Y and instruct colon display.

Ss: The contents of the R'AM DISPLAY area are displayed on the display section (
4) and press the function key (5TA).
RT% 5TOP%TOD) Enter o key mw. At this time, if the 5TART key signal or 5TOP key signal is input, the RAM flag "(sTART7 or F(
STOP) respectively, and if the TOD signal is input, set F (TOD). Further, the time counters CL and COUNT count the 6Q Hz signal TB, and update the current time in the TOD in accordance with the count.

The output signal of the S6+ temperature input means group is input to the RAM TEMP,
At the same time, the contents that were previously in TEMP.L are moved to TEMP.F.

87: Check whether the contents of TEMP, L correspond to the above-mentioned specific displacement position of the knob (6), and if they correspond, proceed to the S8 step as TIME mode, and if not, proceed to the Sat step. .

Ss: Check whether the RAM flag F (TEM) is set. These 7 racks are used to indicate that the knob (6) is not at a specific displacement position, that is, to indicate the temperature setting.

S9: The output signal of the timer time input means Hiroshi is input to the RAM TI.
At the same time as reading into ME and L, the contents that were previously in TIME and L are moved to TIME-F.

810: Set flag F (TIM), F (TE
M) is reset. Flag F (TIM) is the knob (
6) is at a specific displacement position, that is, it is used to instruct the timer time setting.

811: Reset flag F(TIN) and set F(TE
Set M).

812: Check whether flag F (5TOP) is set. That is, in this step, it is checked whether or not the 5TOP key has been operated.

813: Reset F (5TOP).

S14 and 815: Check whether flag F (OF) is set. This flag is used to indicate that cooking is in progress.

816: Check whether F (5TART) is in the set state. That is, in this step, it is checked whether or not the 8TART key has been operated.

5I7-F (START) is reset.

818・Generate the heating instruction signal HP mentioned above and F(OF)
and set TIME in RAM.

Write the contents of L to TIMOOUNT, and then write F(TIM
) and F (TEM), and if the timer cooking is currently being performed, set 7 otsugu F (TIMOF), and if the temperature cooking is currently being performed, set the flag F (TEPOP).

S19: Check whether F (TIM) is in the set state.

Check whether the contents of TIME, L and TIME, F in Szo=RAM are equal.

821: Insert the contents of TIME and L into DISPLAY.

822: Reset F (OLOCK).

823: Check whether F (TEM) is in the set state.

S24: Check whether the contents of TEMP, L and TEMP, F in RAM are equal.

825: Write the contents of TEMP-L to DISPLAY.

826: Write the contents of TIME and L to DISPLAY.

827: Reset F (0LOCK).

Check whether 821F (TIMOP) is set or not.

Check whether 821F (TIM) is in the set state.

8ao, RAM (7) Decrease the contents of TIMECOUNT every second.

831: DISPLA the contents of T IMEOOUNT
Write in Y.

832: Reset F (CLOO'K).

833: Check whether the content of TIMECOUNT is o''.

Sa4: Check the signal at the tore switch (20).

S36: Turn off the heating instruction signal UP and turn off F(OP).

It is checked whether or not this (836.F (TEPOP)) is in the set state.S37: The temperature of the food detected by the temperature detector 08 is read into the RAM TEMP and ME.

838: TEMP, DISPLA the contents of ME
Write in Y.

S39: Reset F (OLOC!K).

840: Check whether F (TEM) is in the set state.

841: RAM TEMP, ME contents TEMP,
Check whether it is greater than or equal to L.

842: Check whether 'F (0LOC!K) is set.

843: Check whether flag F (TOD) is set.

845・Write the contents of TOD in RAM to DISPLAY.

846: Display the contents of DISPLAY on the display section (4).

8n: Check whether the TOD key signal is input.

848: Reset F (TOD).

Next, the specific flow of the above program will be explained.

(1) Set the current time.

In the standby state, S1 to S5.842, S6, [87,8
11) or [88, S9, S10], 812, S15.
816, S 19.820 (or 823, S 24),
It cycles through each step of S4. Then, when you press the TOD key (9), the process goes through steps 842 and S43, and then 844 to 84 while the TOD key (9) is pressed.
7, during which the current time is fast-forwarded and displayed on the display section (4). T.O.
When the suppression of the D key (9) is released, the process returns from step 84B to step S6, and thereafter returns to the above-mentioned standby state.

Then, the accurate current time is updated and displayed on the display section (4).

(Otori) Temperature input When the knob (6) of the temperature input means is moved to the desired temperature position in the above-mentioned standby state, after 87 steps, S11.
812.815.816.819.823, S 24,
After each step of S25.822, return to step 84, and thereafter 85.842, S6.87.811, S12
．． During this cycle, the temperature specified by the knob (6) is displayed on the display (4). This temperature value is also stored in TEMP, L of RAM.

Since the knob (6) of the temperature input means is not at the specific displacement position described above, the process in step 87 is not performed, and even if the knob (5) of the timer time input means is operated, the timer time is not input at all in this case. It should be noted that

(1) Temperature cooking start 5 When the TART key (7) is operated, it is detected in step 816 and heating is started by proceeding through each step of 817.818.
4.85.842.86, S7.8tt, 812, S1
5. Each step from 828.836 to 841.834.819 is cycled, and during this time the temperature of the food to be cooked is displayed on the display (4).
is displayed, and the temperature is compared with the temperature set by the knob (6).

Eventually, when the temperature of the food to be cooked reaches the set temperature, the process returns from step 841 to step S1 to complete the cooking and return to the standby state.

If the knob (6) is placed at a specific displacement position during the above cooking, it will be detected at step 87, and then at step 88.
826.827.89.8 to, S 12.8158
28. Proceed through each step of 836-840, then Sl
The process returns to the step, the cooking is forcibly finished, and the process returns to the standby state.

(IV) In the timer time input standby state, the knob (6) of the temperature input means is still initially at a specific displacement position, and in that state, the knob (5) of the timer time input means is displaced to the desired timer time position. shall be allowed to do so. At this time, after step S7, 88.89.
810.812.815.816, return to step 84 through steps S19 to 822, after u, 85, S
42.86.87.8 s ~ 8 so, 812.8
15, S 16.819.820%8417) Each step is cycled through, and during this time the timer time specified by the knob (5) is displayed on the display (4). This timer time value is also stored in TIME, L of RAM.

On the other hand, in the standby state, the temperature input means knob (6)
It is assumed that the timer is first placed at a specific displacement position, and then the knob (5) of the timer time input means is displaced. At the time of heating, when the knob (6) of the temperature input means is placed at a specific displacement position,
After step 87, proceed through steps S8, S26, and 827, and press the knob of the timer time input means (
5) The timer time corresponding to the current position is temporarily displayed on the display (4).
) is displayed. The subsequent processing by operating the knob (5) of the timer time input means is the same as in 6 above.

(V) Timer time cooking start 5 When the TART key (7) is operated, it is detected in step 816 and 81? , 818, heating is started after proceeding through each step of 819.820.84, S5.
Steps 842, s6.87 to 8to, S12.815, and S28 to 834.819 are cycled through, and during this time the remaining p time of the timer is displayed on the display section (4).

Eventually, when the timer remaining p time reaches 0'', the process returns from step 833 to step 81 to complete the cooking and return to the standby state.

If the position of the knob (6) is removed from the specific displacement position during the above cooking, it will be detected by step 87, and then
11, S12, S15, 828, and S29, and then returns to step S1 to forcibly end the cooking and return to the standby state.

The feature of this embodiment is that the knob (6) of the temperature input means is
), and as long as the knob (6) is not in this position, only temperature input is possible, and as long as it is in the above position, only timer time input is possible. , the timer time and temperature can be set alternatively by simply operating the knobs without confusing the use of the two knobs (5) and (6).

In addition, as another embodiment, the knob of the timer time input means (
A similar specific displacement position is provided only on the 5) side, and the knob (5)
It is also possible to enable only the limit timer time input when the timer is not in this position, and to enable only the limit υ temperature input when it is in the above position.

In addition, as another example of each input means group and image in the above embodiment, a rotary encoder that directly generates a coded digital signal corresponding to the position of a knob may also be used.

Further, in the above embodiment, the displacement position of each knob (5), (6) corresponds to the absolute timer time and temperature, but the displacement amount of the knob (i.e., the difference between before and after displacement) The number of pulses corresponding to the amount of rotation may be generated to change the timer time and temperature that have already been input.

Further, the knobs (5) and (6) in the above embodiment may be replaced with ones that can be linearly displaced.

As is clear from the above explanation, according to the present invention, one of the knobs for each timer time or temperature input is provided with a specific displacement position, and when one of the knobs is at a specific displacement position, the other knob is set at a specific displacement position. Since the input using the knob is disabled, there is no need to confuse the use of the two knobs.
You can selectively set the timer time and temperature just by operating the knobs.

[Brief explanation of drawings]

The figures show an embodiment of the present invention; FIG. 1 is a front view of the cooking device of the embodiment, FIG. 2 is a detailed front view of the operation panel, FIG. 6 is a diagram showing the display state, and FIG. 4 is an electric circuit diagram. , FIG. 5 is a flowchart of the program, and FIG. 6 is a diagram of the contents of the RAM. (5)・
...Knob for timer time input, (6) ...
・Temperature input knob, α0)...Microcomputer, α7)...Heating source, ω)...
・Timer time input means, ■・・・Temperature input means

Claims (1)

[Claims] (1) A heating source for cooking, a timer time input means, a temperature input means, and a control means for controlling the heat source based on the timer time and/or temperature input from the input means, each of the input means The control means includes a displaceable knob and a signal generating means for generating a timer time signal or a temperature signal in accordance with the amount of displacement of the knob, further providing a specific displacement position on one of the input means, and the control means An electronically controlled cooking appliance characterized in that when the knob is at a specific displacement position, input from the other input means is disabled.