JPS60186623A - Electronic control type cooking apparatus - Google Patents

Abstract

PURPOSE:To make it possible to immediately carry out the change in a cooking program which is now being executed by providing a heating stage terminating means in the titled electronic control type cooking apparatus which executes the desired cooking based on the cooking program. CONSTITUTION:In the midway of heating provisions in an arbitrary heating stage, there in a case wherein it is judged that provisions can be finished in a more preferable state when heating in the succeeding stages is started. Alternatively, there is a case wherein it is judged that provisions can be finished in a more preferable state when heating in said stage is terminated and cooking based on this cooking program is terminated. In a case where the former or latter judgement is made, when an operator manipulates the ''STAGE'' key on a keyboard 5, the operation program gets out of a state where odor circulates in steps S5-S9 or steps S5, S13, S14, S7-S9 during the heating at an arbitrary heating stage, from the step S9 and reaches the step S21.

Description

[Detailed description of the invention]

6) Industrial Application Field The present invention relates to electronically controlled cooking appliances such as microwave ovens that control heating using a microprocessor, etc.
As seen in No. 2, a microprocessor is installed,
It is set to K so that various controls can be executed. For example, a desired cooking program is configured by combining a plurality of heating stages having heating conditions such as heating time, heating temperature, heating output, etc., and desired cooking is executed based on the cooking program. More specifically, as the first heating stage, microwave heating is performed for 5 minutes at a microwave output width of 30, then as a second heating stage, microwave heating is performed for 10 minutes at a microwave output width of 50, and then in the sixth heating stage. As a result, microwave heating is performed for 3 minutes at a microwave output of 10 pm, thereby basically achieving the desired cooking. However, even when cooking according to the same cooking program, it is affected by the initial temperature of the food, etc., and cooking may end in the middle of the cooking process and immediately start heating in the next stage. If it is determined that a more desirable M#lc food can be achieved by changing the program, this is determined. In this case, the operation is to temporarily end the process of the currently running cooking program, re-set the cooking program including the next stage and subsequent stages, and then start cooking based on the latter cooking program. It is necessary to continue. Here, if the cooking program is reset in this way, the operation becomes complicated, and heating is interrupted during such operation, and as a result, the heating cannot be started immediately after the IC 11th stage, and the food cannot be heated at this point. The disadvantage is that it cannot be finished in a desirable state. (→Object of the Invention The object of the present invention is to provide an electronically controlled cooking device that allows you to immediately change the currently running cooking program with a simple operation, and thereby allows you to finish food in a more preferable manner. B) Structure of the Invention The structure of the present invention is to achieve all of the above objects by reducing the heating time,
In an electronically controlled cooker that configures a cooking program by combining a plurality of heating stages having heating conditions such as heating temperature and heating output, and executes desired cooking based on the cooking program, a heating stage termination means is provided, and the heating stage is terminated. It is characterized in that upon one operation of the means, the heating stage corresponding to that point in time is immediately terminated, and a process subsequent to the heating stage is started. (e) Example A microwave oven according to an example of the present invention will be described below. Figure 1 shows the appearance of the microwave oven.
) A cooking chamber (2) is arranged inside the cooking chamber (
The front opening of 2) is opened and closed by a door (3). Main body (1
) The control panel 14) on the front right side includes a keyboard (5) for setting heating conditions such as heating time, heating temperature, heating output, etc., and a fluorescent numerical display tube (6) for displaying such heating conditions, etc. The details of these will be described later.The inner side ICt'i door latch (
7) and a door switch knob (81) are protruded, and when the door is closed, these enter into the main body and turn on the interlock switch and the two door switches, respectively.Furthermore, a needle-like insertion tip is provided. (9) and a probe αυ having a plug l [it-. When using the glove, the insertion tip (9J) is inserted into the food, and
□It is inserted into a jack installed on the inner wall of the barber's room (2). The insertion tip of the probe 1υ (9J) has a built-in thermistor for detecting the temperature of the food, and the thermistor and the plug I11 are connected by a shielded wire uz. In detail, the fluorescent numeric display tube (6) has four digit numeric parts (6a) to (6d) and a coy (6e), each digit consisting of 7 segments.Furthermore, the keyboard (5) has: It has various function keys including numeric keys from 0 to 9010 and a 5TAGE key as a means for ending the heating stage, and each key is composed of a normal contact type push button switch. The electric circuit diagram is shown. Microwave generator (141 is interlock switch a9
, the first door switch tte and the bidirectional thyristor surface are connected to one 60Hz commercial power supply terminal f1 and α9. Microwave generator (14 is a well-known configuration including magnetron 4, high voltage transformer i, etc.)
1151 and the first door switch 1e are the door latch (7) and door switch knob (81) described in FIG.
The bidirectional thyristor +1 is turned on when voltage f23vc is applied to its gate through the photocoupler L23. Therefore, when the 7-digital coupler 122 operates with the door (3) of the microwave oven closed, the magnetron (2) generates microwaves, and the energy is supplied to the cooking chamber (2) of the microwave oven. The gate (to) of the bidirectional thyristor 17) is connected to the power supply terminal u9 via the normally closed contact 125+ of the relay 1241 on the other hand, and is therefore normally connected to the gate (23) of the bidirectional thyristor 17).
is shorted to prevent external noise from turning on the bidirectional thyristor αn as desired. The normally open contact (2) of relay +24 is connected to the blower motor 127) IC that cools the magnetron cut. The above 7 Oto couplers (24 is i@1, 2nd transistor (
124J operates when the first transistor is on, and its normally open contact (124J) closes. The control power supply section is connected to the power supply terminals u81 and tt!J via a step-down transformer ((I), and the DC power supply voltage V which is divided into each part of the circuit described above and the circuit described below is connected to the power supply terminals u81 and tt!
C and -VD, respectively generate a heater voltage Vf and a 60Hz signal voltage TB to the display tube (6). The drive control of the first and second transistors described above is performed by the output commands of the microprocessor (32). . Each terminal of 08CI and 08C2 is a circuit constant connection terminal for oscillating the internal synchronized clock of the microprocessor, and a coil and a capacitor are externally connected. ICxH [Inspect the open state of the microwave door (3) In other words, the terminal VC is connected to the second door switch field which is turned on by the door switch knob f8 mentioned in FIG. That is, when the second door switch (to) is off, it recognizes the opening of the door (3) and determines whether it is necessary to punish or prohibit its own actions. This is an input terminal for checking the state. That is, a probe switch 1 is connected to this terminal, which is connected to a jack installed on the wall of the cooking chamber (2) for connecting the probe circle. This is turned on when it is not connected to the above jack, and the microprocessor G2 determines the connection state of the shirobe αB based on the presence or absence of an input signal to the terminal IC2, and performs appropriate processing. RESET is the microwave oven VC power supply. This is an input terminal for resetting the microprocessor 021 to its initial state when the power is turned on.That is, when the power is turned on, the rising edge of the DC power supply voltage VC connects to the terminal RESETc, which is a detection circuit consisting of a transistor, a Zener diode, etc.
The detection output is input to the terminal RESETvc. IT and OT1 to OT4 are input/output terminals for temperature measurement. The microprocessor c14 has terminals OTl to OT.
A 41c4-bit signal is output, and the above 4-bit state M is (00003, (0100), (11
00), . . . [1111), and is made to change rapidly in a binary manner. The above 4-bit state Vi, a rectangle i for a specific temperature
It is attached,

[0000] to 185°F and [1
111] corresponds to 1100FK, respectively, in 5°F increments. The output of the above 4 bits is output from terminal OTr~O.
The voltage is converted into an analog voltage by a group of resistors connected to each of T+ and an amplifier (to), and is input to a comparator 6. Of course, such an analog voltage corresponds to the above temperature. A voltage corresponding to the temperature of the food is inputted to the comparator 1 from the other probe Qll, and when the input voltages match, a coincidence signal is generated between the comparators, and this signal is input to the terminal IT. When the microprocessor (to) receives the terminal IT [above-mentioned number 1], it immediately stops the state change of the above-mentioned 4 pins [8]. That is, the state of the 4-bit signal at this time corresponds to the food temperature detected by the probe αυ.
Therefore, it is processed in the microprocessor ( ) 4 as a measured temperature. INT is an interrupt terminal, and the 60 Hz signal TB is shaped into a pulse signal of 6 (11 (z) by the waveform shaping circuit +4+3 consisting of transistors, diodes, capacitors, etc. and input to the terminal INT. In microprocessor countries, the 60 Hz signal TB
Every time a pulse signal is received, other processes are interrupted and a second signal is generated for executing a time measurement process as described later. D81~[)S7 are data output terminals, and DGt~DG5
are control signal output terminals, and the outputs of these terminals are input to the display tube (6) described above. Display is performed on the display tube +61 in a time-division manner. Thus, each output of the terminals DG1 to DG6 is generated sequentially,
The output signal of each terminal DGI to DG4 is expressed as a 4-digit numerical part (
6a) to (6d) digit selection signal and none, one terminal DS1
The output signals of ~DS7 are used as segment selection signals for the numerical parts (6a) to (6d). Therefore, for example, terminal DG
When the output of 2 is present, the terminals DSz, DSs, DS4, DS
5. If each output of DS7 exists, the numerical part (6b)
, the number "2" is lit and displayed. Also terminal DG5
The output signal of is used as the digit selection signal of colon [6e], and the output signal of terminal DS1 is used as the colon selection signal. Therefore, when the output of terminal DSL is present when the output of terminal DGa is present, the colon is selected. (6e) is lit. DG6 is an additional control signal output terminal, which is outputted to this terminal following the generation of the output of the terminal DG5, and such output is displayed in the key matrix ( 4
1) is applied to the five column lines. IK1 to IK a are key signal input terminals, each of which is connected to the four row lines of 4υ.Keep IJx (41)'r Each intersection of the above column lines and row lines forming the key matrix (4υ). The key switches of the keyboard (5) are cross-connected to each other, and when a key is operated on the keyboard 15, the column line and row line forming the intersection at the intersection corresponding to the key are connected via the key. They are electrically connected, and a signal is input to one of the terminals IK1 to IK4 that is connected to the row line. The microprocessor field is therefore terminal D
Terminals IKl to IK are synchronized with each output signal of G2 to DGa.
The type of key operated is determined by checking the state of the input signal to a. OM and OP are a heating instruction terminal and an output level instruction terminal, respectively, and the microprocessor (3) first generates an output at the terminal OM during the heating execution stage, and after a slight delay generates an output from the terminal 0PVc, and when the heating execution is finished. The outputs of both terminals are extinguished. That is, the output of the terminal OM turns on the first transistor, drives the relay (2), and turns off and on the normally closed contact and the normally open contact (2), respectively. The gate [present] of the bidirectional thyristor t1?) is released from the short-circuited state, and the ZROA motor surface is driven. Next, when an output is generated from the terminal OP, the second transistor 4 is turned on and the photocoupler 123 is driven. At this time, the output of the terminal OP takes 10 seconds as one cycle, and within each cycle, it is generated only for a period corresponding to the output level. Therefore, the microwave output generated by the magnetron ■ is 1
If the period of occurrence within the cycle is 10 seconds, it will be the maximum output value, and if it is 5 seconds, the output value will be about 50. Next, the operation of the microwave oven will be explained based on a flowchart showing the flow of the operation program of the microprocessor C (3) shown in FIG. In the S1 step, when the power is turned on, the microprocessor country is initialized based on the signal input to the terminal [8ETK, and in the S2 step, the current operation key on the keyboard (5) is detected. At the same time, a display based on this is displayed on the display tube 161.In step S6, it is determined whether or not the 5TART key was detected in step S2. Set a cooking program consisting of multiple heating stages with heating conditions such as temperature and heating output, for example, perform microwave heating for 5 minutes at a microwave output of 60 as the first heating stage, and microwave output as the @2 heating stage. A cooking program is set to perform microwave heating at 50% for 10 minutes, followed by microwave heating at 10% for 3 minutes as the sixth heating stage, and the desired cooking is performed based on this cooking program. When executing , first put the food in the cooking chamber (2), close the door 13J, and press the keyboard (5).
), press the keys in sequence, 4 times, 4 times, 10 times, 10 times, 100 times, 100 times, 0 ■ Taguchi. Then, in step 82 of the circulation state, the cooking program is sequentially set in the microprocessor G3 for each of the first to sixth heating stages, and its contents, ie, time and output, are sequentially displayed on the display tube 16). . Then, when the user operates the 5TART key on the keyboard +57IC, the operation program exits the above cycle and reaches step S4. In this step, heating is started in the first heating stage. That is, an output is first generated from the terminal OM, and then an output is generated from the terminal OP. In this case, since a width of 30 is set as the output, the output of the terminal OP is generated for only 5i in each cycle, with 1 and 0 seconds as one cycle. Further rc, in step S4, the remaining heating time in the @1 heating stage starts counting, and the remaining time is displayed on the display tube (
6). In the next 85 steps, it is determined whether the heating currently being performed is based on time or temperature. In this case, the heating time in the first heating stage is set to 5 minutes and can be determined by time, so the operation program continues to proceed to step S6. In this step, it is determined whether the remaining time of the heating currently being executed has reached OVc. The heating in the first heating stage, which is currently being executed, is not 0 even after the threading has started, so the operating program then proceeds to step S7. In this step, the current operating key is detected, and the open/closed state of the door (3) is input based on the on/off state of the second door switch. In the next 88 steps, 5TOP is reached in S7 step.
It is determined whether either one of the key detection and door (3) open state input has been performed. None of these are currently being performed, so the operating program reaches step S9. In this step, it is determined in step S7 whether or not the 5TAGE key has been detected. In this case, 5TAGE
No key has been detected, so the operating program returns to step S5 and repeats the entire cycle from step 85 to step S9. After that, when the remaining time reaches 0 after 5 minutes of heating time in the first heating stage, the operation program fls5 to S9
The cycle of steps is completed by 86 steps to reach the SIO step. In this step, it is determined whether there is a next heating stage in the cooking program. In this case, the second
The heating stage continues, and in the following step S11, heating is started in the next second heating stage. That is, in a state where an output is generated from the terminal OM, the terminal OP
From then on, corresponding to 50% output, one period is 10 seconds, and output is made for only 5 seconds within each period. Furthermore. At step 811, the remaining heating time in this case starts to be counted, and the remaining time display starts at +61K on the display tube. Then, the operating program returns to step S5 again. Here, since the heating in the second heating step also depends on time, the operation program thereafter cycles through steps 85 to S9. Therefore, the heating time in the second heating stage is 10
After a minute has elapsed, the operating program repeats such a cycle as Vc
The process exits at step S6 7' and proceeds to step S10. And in this case too, there is a heating stage next, so the next 81
In the first step, heating execution in the next third heating stage is similarly started vc, and the remaining time is started to be counted and displayed. And the operating program is 85~
After the S9 step is cycled, the heating time of 3 minutes in the sixth heating stage has elapsed, and the process moves from the 86th step to the 810th step. In this case, there is no next stage, so the operating program proceeds to step 812. In this step, the output from the terminals OM and OP is subsequently stopped, the heating operation is stopped, and all resettable operations in the microprocessor c13 are reset, thereby completing the cooking according to the cooking program. Thereafter, the operating program cycles through steps 82 and 83 and enters a state of waiting for a key operation for the next cooking. Set a cooking program in which the first heating stage is microwave heating at 40% microwave output for 6 minutes, and the second heating stage is microwave heating at microwave output <80 until the food temperature reaches 1700F. When performing desired cooking based on such a cooking program, food is first placed in the cooking chamber (2), the tip (9) of probe U is inserted into the food, and plug +tl is inserted.
Insert it into the jack, close the door 13), and then use the keyboard (5) to operate the keys in the following order: ■Decoy and Retrospective ■Return and Return ■Hoguchi 121 and Retrospect once. Then, the cooking program consisting of the first and second heating stages is displayed on the microprocessor (set in three units, and the contents thereof are displayed on the display tube 16) at step Vc82, as described above. Then, when the 5TART key is operated on the keyboard (5), heating in the first heating stage is executed in the same manner as in the cooking in item (n) above, and after that, when 6 minutes of heating time in the state has elapsed, , the heating in the second heating stage is started in step S11. Thus, after such heating has begun, the operating program returns to step S5, where the heating in the second heating stage is at a temperature of 170°F.
has been set and is dependent on the temperature, so the operating program continues to step S13. In this step, the food temperature δ is measured based on the output of the probe 1υ, and the temperature is displayed on the display tube 16). In the next step 814, it is determined whether the measured temperature has reached the set temperature of 1700F for the stage in this case. Assuming that it has not been reached at this point, the operating program then proceeds through steps 87-S9, then returns to step S5, and then steps S5.813.814, S7.
- Cycle through steps S9. 'Thus, when the set temperature of 1700F is reached,
The operation program exits this cycle from step 814,
The process reaches step 815, which is similar to step S10. In this case, the cooking program is up to the second heating stage and there is no next stage, so the operation program proceeds to step S16. Here, the operation program is designed to reach step S16 only when the final stage of cooking according to the cooking program is based on temperature. and,
In step S16, heat retention heating (warm retention heating stage) is started. That is, in order to keep the food at a predetermined temperature, the terminal O
In a state where an output is being made from M, the output from the terminal OP is stopped or generated based on whether the measured temperature of the food reaches the predetermined temperature. From this point on, such heat-retaining heating is continued for a predetermined period of time. For that purpose, S1
In the 6th step, a countdown is further performed from the predetermined time, and the remaining time of the heat-retaining heating is started. The operating program then proceeds to step 817. In this step, it is determined whether the remaining time is OK or not. At this moment, it is not 0, so the operating program F
Proceed to steps 818-820, which are the same as steps i87-S9, respectively. Thereafter, the operation program cycles through steps 817 to 820, and when the remaining time for heating while keeping warm reaches 0, the cycle is interrupted by steps 817 and reaches step 812, thereby ending heating while keeping warm. The operation program then cycles through steps S2 and S3 and enters a state of waiting for key operation for the next cooking. (IVI) Now, if you look through the sight glass of the door (3) at the current heating state of the food during heating at any heating stage in the desired cooking in [1, [13] In some cases, it may be determined that it is possible to finish the food in a more preferable state by immediately ending the stage in question and starting the processing subsequent to the stage, that is, heating in the next stage or later. If this is the final stage of a cooking program, it may be determined that the food can be finished in a more preferable state if the stage is finished and then the cooking program is finished. In this case, the process following this stage means waiting for a key operation for the next cooking. Therefore, if the former or the latter is determined,
The operator only has to press the 5TAGE key on the keyboard (5). Then, the operation program executes [■] during heating at any heating stage (vcS5 to S9 steps or S5.813v814. as described in Section 11).
Steps 87 to S9 are cycled, and the process exits step at-89 and reaches step 821. In this step, the output from the terminal OP is stopped and the heating at the stage concerned is immediately terminated, and the operation program then proceeds to s10 and S.
This leads to 822 steps, which is the same as the 15 steps. Here, if the operation program corresponds to the former determination, then the program proceeds to step 811 and heating in the next stage and subsequent stages is immediately executed according to the above-described process. Alternatively, if the operating program supports the latter determination, then 812
Proceed to step 1 and finish cooking according to the above-mentioned process.
Then, the process cycles through steps S2 and S3, and immediately enters a state of waiting for key operation for the next cooking. (V) If the heating in the final stage of the desired cooking is based on temperature, after the completion of such cooking, heat retention heating (warm retention heating stage) is performed as shown in the above [Resolution] section,
That is, the operating program cycles through steps 817-820. Therefore, if it is determined that it should be immediately terminated during such heat retention heating, 171-j, #-Ho)'f5J
Similarly, with Vc, all you have to do is press the Vc STAGE key. Then, the operation program exits the cycle of steps S17 to S20 from step 820 and reaches step V of S12. The subsequent operations are as described above. (Vl) If you want to check the current heating state of the food by opening the door (3) during heating at any heating stage where the desired temperature MAVc in (11) above, 5) It is best to open the door (3) by operating the 5TOP key on the V button, or directly open the door (3). Then, the operation program exits the cycle of steps 85-S9 or steps S5, S13, 814, and S7-S9 from step S8 and proceeds to step 825. In this step, the heating operation currently being executed is temporarily interrupted. The operating program then cycles through steps 824-827. The S24 step is similar to the 82 step, and the S25 step is the same as the 82 step.
, S26, and S27, it is determined whether the CLEAR, 5TART%, and 5TAGE keys have been detected in step S24, respectively. Therefore, if the heating state of the food is reliably confirmed and it is determined that the heating by the stage should be terminated from the interrupted state, the 5TAGE ghee may be operated using the keyboard (5). Then, the program exits from the ts27 cycle of the operation program US24 to 827 steps and reaches step 828. In this step, the heating by the stage is immediately terminated from the interrupted state. Thereafter, the operating program cycles through steps 824 to 827, and enters a state of waiting for a desired key operation as a process subsequent to that stage. Fall, close door (3) 5 TART
When the key is operated, the operation program exits the cyclic 'frs26 step of steps 824-S27 and reaches step 822, and the subsequent operations are as described in item [1v] above. In each of the above items (13 to (Vl)), the desired tone is executed based on the cooking program set by the operator each time, but a fixed cooking program stored in advance may be appropriately selected and recalled. , the cooking program may be executed based on such a fixed cooking program. In an electronically controlled cooking device that configures a cooking program and executes desired cooking based on the cooking program, a heating stage ending means is provided, and when the ending means is operated, the heating stage corresponding to the current one is immediately started. Since the cooking program that is currently being executed can be changed immediately with a simple operation, the food can be finished in a more desirable state.

[Brief explanation of drawings]

The drawings show a microwave oven according to an embodiment of the present invention; FIG. 1 is an external perspective view, FIG. 2 is a front view of the control panel, FIG. 6 is an electric circuit diagram, and FIGS. 3 is a flowchart showing the flow of an operating program. Pus...Microprocessor, (5)...Keyboard. Applicant Sanyo Electric Co., Ltd. Shokudo Co., Ltd. Patent Attorney Shizuo Sano Figure 44 0 Figure 4, y+z

Claims (1)

[Claims] (II) In an electronically controlled cooker that configures a cooking program by combining a plurality of heating snurges having heating conditions such as heating time, heating temperature, heating output, etc., and executes desired cooking based on the cooking program, heating stage ending means An electronically controlled cooking appliance characterized in that, upon one operation of the ending means, the heating stage corresponding to the heating stage is immediately ended and the processing subsequent to the heating stage is started.