JPS5973884A - Electronic range - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a microwave oven, and more particularly to a microwave oven for optimally thawing frozen foods.

When thawing with microwaves, the dielectric constants of ice and water are:
If the dielectric constant of air is 1, it is 2.2 and 77, respectively, which are very different, so if it partially thaws, the molten water will have a dielectric constant of 1? Microwaves are absorbed intensively, and partial thawing is promoted more and more, which is undesirable as it breeds thawing bugs. If thawing is performed by reducing the microwave output, the occurrence of such uneven thawing will be reduced, or the thawing time will be longer than normal.

A method has also been proposed in which the microwave output is gradually decreased continuously during thawing, but this method is effective because the microphone [one wave output is changed C!] regardless of the actual thawing state. It cannot be said that it is an efficient method after all.

The present invention was developed in view of the above-mentioned points. Celsius, most briefly, the microwave is output when the temperature of the thawed object reaches a predetermined value while observing /M degrees of the thawed object. This allows the optimal decompression to be performed automatically.

Figure wIJ1 shows an overview of an electronic lens (10) according to an embodiment of the present invention.

The microwave oven (10) has a cooking chamber (12) and a control panel (13) on the main body side, and a cooking chamber (λ2) which is pivotally connected to the main body side.
and a door (14) that opens and closes the opening. The control panel (13) has a table (table) that displays information such as time etc.
15) and an operating section (1) for controlling the operation of the microwave oven.
6) and are distributed, which will be described later. door (1
4) On the inner side, there is a door opening (17) and a door switch.
A notch knob (18) is provided protrudingly, and when the door is closed, these enter into the main body and turn on the interlock switch and the door switch, respectively.

FIG. 2 shows details of the display format on the display section (15). The display (15) comprises a fluorescent numeric display tube, which is known per se, and is capable of displaying a four-digit number and a colon. Figure 2A shows the display form of the current time, vo'>*h*
9ha'>°°"6"°11°"5141.

FIG. 2B shows the display format during timer operation, and in this case, 10 minutes and 30 seconds is displayed without the colon being lit. FIGS. 2C and 2D show display formats during temperature operation, and display 80°C and -15°C, respectively. Figure 2 e
The letter F in °C is displayed along with the thawing instructions. Display section (1
5) displays other input information from the operation section (16) as appropriate.

FIG. 3 shows the details of the operation section (16).
6> is 10 numbers from 0 to 9 - and TIMER.

POWER, CLOCK, CLEAR, TEMPITA
It is equipped with eight (7) 77 function keys: RT, S'rOP, and DERFO8T, and each of these keys is composed of a total contact type push button switch. The operating procedures and functions of each numeric key and function key will be described later.

Figure 4 shows the arrangement of components for infrared detection placed between the upper wall of the cooking chamber (12) (<19) and the exterior cabinet of the microwave oven. Infrared rays (20) emitted from objects reach the outside of the cooking chamber through the upper wall (19) and the central opening (21) of the cooking chamber (12), and are chopped by the chopper (22) before passing through the concave mirror (23).
The light is focused by the infrared rays and reaches the infrared detection element (24).

A metal cylinder (25) is fitted into the opening (21) in the north wall of the cooking chamber, and the opening at the tip of the cylinder is covered with an infrared transparent cover (26) made of polyethylene or the like. Metal cylinder (25
) has an inner diameter of 20ff! 11, the length is 1211111 south, and the microwave supplied to the cooking chamber cannot pass through such a cylinder.1° The chopper (22) is composed of a perforated disc that is rotationally driven by a synchronous motor (27). and the incident infrared light <20> is 20
The cycle of chopping and refusing at a frequency of Hz is detected by a photo-interrupter (30) consisting of a light-emitting element (28) and a light-receiving element (29) that face each other with the chopper (22) in between.

The infrared detection element (24) is made of lithium tantalate (LiT).
1g'f itself is well known as a pyroelectric infrared detection element. That is, if the temperature of the food to be cooked is T (1) and the temperature of the chopper (22) itself is 'I' c, then the element (24) receives infrared rays of 4 degrees corresponding to the temperature To and infrared rays corresponding to the temperature Tc. They are applied alternately at a cycle of 20 Hz, and the element (24) generates a voltage corresponding to the difference between the two temperatures To and Tc.The temperature of the food detected by the element (24) is thus equal to the temperature of the chopper (22). To compensate for this difference, a semiconductor diode (31) is arranged near the chopper, and the temperature characteristics of the diode are used to detect the approximate temperature of the chopper (22) itself. Compensation processing will be described later.

FIG. 5 shows an electric circuit diagram of the microwave oven (lO),
FIG. 5A shows the microwave generation section and the tfA section.
FIG. B mainly shows the control sections for controlling the microwave generation section.

In FIG. 5A, the microwave generator (40) includes an ink clock switch/ch (41) and a bidirectional zyristor <4
2) '+ 60Hz commercial power supply terminal f (43) (44
).

The microphone and first wave generation section (40) is a magnetron (45),
It has a well-known configuration including a high-voltage transformer (46), a diode (47), a capacitor (48), etc. The ink/clock switch (41) is turned on by the door latch (17) described in Fig. (42) turns on when a gate signal is input to its gate (49).

Therefore, when the door (14) of the microwave oven is closed and a gate signal is present at the gate (49) of the bidirectional sirisk (42), the magnetron (45) generates microwaves, and the energy is transferred to the cooking chamber of the microwave oven (49). 12).A blower motor (5) is connected in parallel with the microwave generator (40).
0) is connected, and a fan driven by the blower motor (50) cools the magnetron (45) during the oscillation operation of the magnetron (45).

Power supply terminal -r- (43), (44)l;! Others ji'v/
LtljX l-ras>'su (510: Continuous?
[fi + - The pressure of the intersection 1AL' lowered by the laser (51) is the conrunner (52) and the diode 1' (
53) is applied to the gate (49) of the bidirectional thyristor (42) via a smoothing circuit and a direct AL voltage. The gate switch circuit (54) includes a light receiving transistor (56) of a photocoupler (55), and a photocoupler (55).
The light emitting diode (57) is connected to the control 81 of the fifth IIB.
It emits light upon receiving the signal PO from ().Therefore, the bidirectional cyrisk (49) is supplied with a gate signal while the signal PO is present.

A synchronous motor (31) is further connected to the power supply terminals (43) and (44) via a relay contact (59).

The direct dL power supply unit (58) converts the AC voltage supplied from the power transformer (51) into various DC voltages and distributes them to each part of the circuit shown in FIG. 5B.

In FIG. 5B, the control section is composed of a microprocessor (60) made of a semiconductor large-scale integrated circuit, and in this embodiment, a microprocessor μP manufactured by NEC Corporation is used.
D553 is used.

The microprocessor (60) has many input/output terminals as shown in the figure, and each output terminal f will be explained below. C
The La and CLI terminals are connected to the microphone
This is the final circuit constant connection terminal of the basic clock signal oscillator in 0), and in the present Mji example, the oscillation frequency of the oscillator is set to 400 KHz by connecting a coil and a capacitor to this terminal. A.

Terminals A2 to A2 are data input terminals f-, and these terminals receive input catheter signals SAo and SAI from the human operator section (61).

SA2 is entered in double code form. The Co to C2 and DO to D3 terminals are transmitted from the display data output terminal C1 to the display section (15) in the form of display data signals SDI to SD7 or binary ff. Eo to E3 and 1o terminals are control signal output terminals, and control signals S Eo are output from these terminals, respectively.
, S El, S E2. S E3. S Io.

The information is transmitted to the display section (15) or the operation input section (61).

RESEl is an initial state setting signal input terminal, into which the initial state setting signal IR is input from the initial state setting signal generation circuit (62).

The 1N terminal is the microphone
The time reference signal for the timekeeping operation of
Then, the terminal is connected to a 60Hz sine wave AC or a waveform shaping and phase shift circuit (63) generated from the t-source transformer 7 (51) in Fig. 5A, which is connected to a 60Hz pulse generator Q TB. Enter. BL end is door signal D from door switch black 4)
This is a terminal for inputting OR. The door switch (64) is operated by the door knob (18) mentioned in Fig. 1, and generates the signal DOR when it is turned on, that is, when the door is closed.The F3 terminal is a terminal that outputs the buzzer signal BZ. During the presence of the signal BZ, a well-known buzzer circuit (65) operates and generates a buzzer sound.The Fl terminal -r- is a heating instruction output terminal, and the above-mentioned signal PO is sent from this terminal to the photocoupler (55). The signal is transmitted to the light emitting diode (57) of the F(+ terminal) which generates the signal TE during temperature operation. Activate '# m
Relay contact (59) (Fig. 5A)
) is turned on.

Terminals Go through G3 and Ho through H2 are terminals that generate count signals SGυ through SG6, respectively, during temperature measurement.

These 7-bit signals SGo to SG6 enter the temperature measurement circuit (69) through a two-man circuit (68) for impedance conversion (each of the two circuits is short-circuited). The above 7-bit count signal output state [5Go=
SG6] is all 0 state at constant temperature θU, that is, [00...
Starting from 0], [100...0], [010...
0], [110.O], etc., are counted up in binary notation. Terminal Bo is a terminal to which a count stop signal MTE is input, and the above-mentioned count-up operation is stopped when No. 8 is under human power.

The operation input section (61), as shown in detail in FIG. 6, includes switches corresponding to the keys of the operation section (16) shown in FIG. 3. When control signals SEυ, S Io, and SE2 from the micropro sensor (6o) arrive, the first column line (70), second column line (71), and third column line of each switch of the operation section (16) are respectively activated. A signal potential is supplied to (72).On the other hand, the first row line (73) of each switch of the operation section (16)
) to the 6th row line (78> enters the encoder <79),
The encoder converts each row line input into a 3-bit code and outputs it as input data signals SAo, SAl, SA2.

Therefore, the operating state of the key is checked 4 when one of the control signals SEo, S1o or +61 of SF3 is generated, and the encoded human data signals SAo, SA1 . SA2
will be output. The correspondence between each key and the input data signal is shown in FIG. 7A. As is clear from the figure, three keys correspond to one input data signal, and the microphone U button (60) uses the synchronous relationship with the control signals SEo, S1o, and SF3. to distinguish each of these three keys. In addition, the above input data signal is a microb [B in the J processor (60)
It is treated as a CD code, and the correspondence relationship is shown in FIG. 7B.

As mentioned above, the display section (15) consists of a well-known fluorescent numeric display tube and its driving circuit, and receives the control signal SEo from the microprocessor (60) as the first digit selection signal, SE
l is the second digit selection signal, SF3 is the third digit selection signal, SF3
is used as the fourth digit selection signal, while the microprocessor (6
The display data signals SDI to SD7 from 0) are used as one word for each segment selection of each digit. Thus, for example, in the presence of control signal SEo, display data signal SD1. SD
3. SD4. Sn2゜Sn2 is displayed second
The number 12 will be displayed as a digit. In addition, the display section (1
5) uses the control signal Slo as a freon digit selection signal and the display data signal SD6 as a freon digit selection signal, and lights up the colon by both signals.

Initial letter 7! ! The afQ constant signal generation circuit (62) is a well-known circuit consisting of a diode and a capacitor, and at the moment the microwave oven (10) is energized, the DC current shown in FIG. 5A is output from the source (58). The initial state setting signal IR is generated by detecting the rise of the voltage VD.

The temperature measurement circuit (69) includes a resistance ladder circuit (80), a broken line approximation circuit (81), a temperature output circuit (82), and a comparator (8
3), and the output signal of the comparator (83) becomes the signal MTE that enters the aforementioned terminal BO.

As is well known, the resistance ladder circuit (80) is formed by connecting resistors with resistance values R and 2R in a ladder shape, and receives a 7-bit count signal SGO through an impedance converting antagonal gate 1 (68). .about.SG6 is input, and therefore, a stepped voltage VL as shown in FIG. 8 is outputted to its output terminal (84). That is, its output is
G o -S G all 6-t: o (-tov)
Nodos LIOv, when the total is 11 (OV), it becomes OV, and as it is counted up in binary, it becomes 110.
Move up one step at a time from V. Therefore, the stepped voltage -VL takes on a total of 128 levels of values depending on the output state of the count signal S Go -S G6. The output states of the count signals SG+J to SG6 corresponding to such 128 steps are processed as temperature information in the microphone [Cobb U processor (60)]. That is, when the stepped voltage VL is -10V, the corresponding output state [00...0] is -20°C, and thereafter it increases by 1°C for each step increase, and the stepped voltage V
When L reaches Ov, the corresponding output state [1
1...1] at 107°C.

The broken line approximation circuit (81) is for approximating the stepped voltage VL, which changes linearly, to a specific curve using a broken line. That is, after the output of the infrared detection element (24) described above is subjected to appropriate compensation processing, it is sent to the temperature output circuit (82).
), this appears as a temperature output MT, which is compared with the stepped voltage VL, but the correspondence between the value of the temperature output MT and the actual temperature of the food to be cooked is either plain f or infrared detection type. Therefore, as shown in FIG. 9 q, its characteristic is not a straight line but a curved line (theoretically a 4th power curve) A. Therefore, by adjusting the circuit constants in the temperature output circuit (82), the output voltage at -20°C can be changed to -1OV, or 107°C.
Divide the output voltages at C to Ov and -C as well, the stepped voltage VL becomes a y straight line B with respect to temperature, and is different from curve A except for two points at ~20°C and 107°C -C They do not match and a comparison error occurs between the two. In order to minimize such errors, the broken line approximation circuit (81) converts the stepped voltage VL in which temperature and output voltage have a linear relationship, that is, the straight line B in FIG. 9, to three broken lines C1 (-10V). ~-8V), C2(-
8V to -4Vl and C3 (-4V to Ov) to generate an output that approximates curve A.

FIG. 10 shows details of the broken line approximation circuit (81). The stepped voltage VL is applied to the impedance conversion operational amplifier (90
), the input value to be rejected is output to the output terminal <94 via any of the first to third operational amplifiers (91) to (93).
) is output.

The first operational amplifier (91) is set to operate when the above-mentioned human power value is -lO■ or higher, and similarly, the second and third f4 operational amplifiers (92) and (93) are set to operate when the human power value is -lO■ or higher. It is set to operate at 18V or higher and 4V or higher, and each operational amplifier
1>, (92) and (93) are (
I, along with the feedback resistor associated with each amplifier, along the broken line c1.I, not shown in FIG. It has output characteristics matching each of C2 and C3. Moreover, these operational amplifiers output -10V in their non-operating range, and therefore the °C diode (9
4) Due to the operation of the OR circuit composed of (95) and (96), when the stepped voltage VL, which is a human power value, is between -110V and -8V, it corresponds to the range of -2'0 @C to 30℃. The curved line CI characteristic is also 3 between -8v and -4v.
The curve C2 characteristic corresponding to the range from 0℃ to 80℃, and the curve C3 characteristic corresponding to the range from 80℃ to 107℃ between 14V and Ov can be obtained from the output terminal (94〉), and this output The characteristics are approximated to curve A.

FIG. 11 shows details of the temperature output circuit (82).

The infrared rays incident through the chopper (22) are converted into voltage by the infrared detecting element f (24) and F E T (10
0).

The signal is outputted through a preamplifier (102) including a preamplifier (101) and a main amplifier (104) including an operational amplifier (103). The waveform at output point A of the main amplifier (104) is shown in FIG. 12A. In the same figure, the broken line indicates the temperature of the cooking material To
When is higher than the temperature Tc of Chiyo/Pa (22) itself,
On the other hand, the solid lines indicate low values. As shown in the figure, these waveforms are ~' sine waves, the frequency of which is 20 Hz depending on the chopping speed by the chopper (22), and the absolute value is proportional to < ITo-Tel as described above. .

The output of the main amplifier (104) is connected to the synchronous rectifier circuit (105).
), and in the circuit, after being switched by the switching transistor (106), the resistor (1
07) and the capacitor (108). The switching operation of the switching transistor (106) is controlled by the output of the synchronization detection circuit (109). That is, the circuit includes the photointerrupter (30) described above for detecting the cycle of the chopper (22), The ljj force is as shown in Figure 12B as v -v2 Holt and +v
Outputs a 20Hz rectangular alternating voltage that varies between 1 volt. And the size of Vl and V2 is the main amplifier (
104) is set larger than the expected maximum value of the output. Therefore, the waveforms at the output point C of the switching transistor (106) and the output point of the smoothing section are as shown in FIG. 12C and D, respectively. Note that the absolute value of the waveform at the output point is proportional to 1To-Tel.

The output of the smoothing section is amplified again by an amplifier (111) including an operational amplifier (110), and then enters an adder circuit (112). The adder circuit (112) is mainly an adder resistor <113)
.

(114) and an operational amplifier (115).

The other input to the summing circuit (112) is the output of the chopper temperature sensing circuit (116). That is, the circuit includes the chopper temperature detection diode <31> and the operational amplifier (117) described above.
), and according to the characteristics of curve A in Figure 9, Cho//
Generates a first-stream signal proportional to the temperature of the bar (22) itself.Therefore, the temperature of the bar (22) itself is removed from the adder circuit (112), and the output voltage corresponds only to the temperature of the food being cooked. This output voltage is nothing but the compensated temperature output MT as described above.

The temperature output MT is input to the comparator (83) (FIG. 5B), but such input is inhibited by the temperature J!
iJJ is prohibited for a predetermined period of time at the beginning of operation. That is, in the same circuit, during non-temperature operation, the capacitor (120) is charged via the diode (119), but when the temperature operation starts, -10V (7) INH is charged from the transistor (66) (Figure 5B). The charging path is cut off, so that the charging current of the converter (120) is discharged through the resistor (122) and the transistor (123). During this time, the temperature output MT is forced to -10V.Moreover, the prohibition time is the time from when the temperature operation starts and the timer (22), which starts rotating, reaches steady rotation. It is determined to be long (several seconds).

or < L, tT, the comparator (83) uses a broken line approximation circuit (
81) and the temperature output circuit (82), the two outputs are compared, and when the output value of the former becomes north of the output value of the latter, a signal MTE is generated. Microno■” Hee 7s (60) is /l1lIa once! Sometimes, the state of the 7-bit output signal 5Go-8G6 is changed from -20°C to 107°C.
The time it takes to cycle from C to 107℃, that is, the step voltage V
The time required for L to change from -1 ov to Ov is extremely short, S'2 milliseconds, and during this time the temperature of the food to be cooked, that is, the value of temperature output MT, is considered constant.

Therefore, for example, if the temperature of the food to be cooked is 90°C and the i'uq temperature is set at this point, the temperature output MT is N-2.5V, and therefore the output of the broken line approximation circuit (81) When the voltage reaches -2.5V, the output MTE is generated from the comparator (83), and the microprocessor (60) immediately fixes the state of the 7-bit output signals SGo to SG6. That is, at this time, [SGo~SG6]=[0101t
01, and this state is microburst/s(6
0) is processed as temperature information of 90°C.

Figure 13 shows the inside of the computer L1 node (60), including the control unit (200) and the operation L2 node (20).
1), Accumulator (202>), Random Access Memory (hereinafter referred to as RAM) (203), RAM z
<- Nofa (204), input/output interface (20
5> etc., and information is exchanged between these parts via the data hash (206), and the control unit:
The client (200) controls the exchange of these information.

External human input signals SAo, SA1. SA2. DOR, MTE
and external output signal S Di -S D7. S Eo
-SE3. S Io, PO, BZ, TE, SGo~5G
6 (7) are input/output via the input/output interface (205).

The microprocessor (60) further includes a basic taro signal generator (207), an interrupt control unit (208) and a reset unit (209);
) generates a 400KHz basic clock signal, the unit (20B) instructs interrupt processing for the necessary timekeeping operation when the time reference signal TB is input, and the unit (20B)
9) instructs necessary reset processing when the initial state setting signal IR is input.

The control unit (200) is a read-only memory (hereinafter referred to as ROM) that stores control programs and constants.
210), a program counter for advancing each step of the control program, and an instruction decoder for decoding each instruction read from each step to execute a job.

RAM (203) is used to store various data, and its storage area is shown in FIG. 14A.
The storage area of the RAM (203) has pages 0 to 3, and 0 to 9 for each page. Addresses consisting of 16 digits A to F are associated with each other, and by specifying this page and digit, a specific storage area can be specified. R.A.M.
(203) also includes an address register for this purpose.

Each digit 0 to 9 and A to F of the RAM (203) consists of four hits. DISPLAY, TIMER, CLOCK
Each area is 4 digits long, and each digit is expressed as a decimal number in BC.
D code C,' is stored. CNTl, CNT2. TEMP
Each area of A and TEMPB has a length of 2 digits, and for each digit, store the decimal number in the Bcpta number. PWRA,
PWRB.

POWER, PWRD, RD, CNT3. Each area of the NKB has a length of one digit and similarly stores decimal numbers in BCD code. The FKB area has a length of 1 digit and stores information in 4-bit numbers. TCNT has a length of 2 digits and stores information in 8 bits. Each of the KNF, CTL, and RF regions is one digit in length, and their respective pin configurations are shown in FIG. 14B. The control unit (200) refuses R A M
(203) is used as the king to execute control,
A flowchart of the program stored in the ROM (210) for this purpose is shown in FIG.

Next, various functions of the electronic system of the present invention will be explained with reference to FIG. In the following explanation, each address of RAM (203) will be expressed as [page, digit], so for example, [2
, 3] represents the 3-digit address of page 2.

Further, the microprocessor (60), ROM (210), and RAM (203) are simply referred to as microprocessor, ROM, and RAM, respectively.

[Start of electricity supply]

When the microwave oven is initially energized, the initial state setting signal IR described in FIG. Figure 15 'A)
Set to 1 step.

In step A1, Of! is applied to the entire RAM area. : The entire contents of the RAM are cleared by aging, and then the A2 and A3 steps are sequentially performed. In step A2, the contents of the CLOCK area of RA to ■ are moved to the DISPLAY area in preparation for displaying the current time. If in step A3
! -1; <Prepare to display current time 8<1 is written in the COL area.

The program then moves to step A4, in which the microprocessor outputs control signals SEo to SE3 and SI
o is sequentially generated, and display processing, key detection processing, and colon reset processing are performed.

In the above display processing, in synchronization with the generation of control signals 5Eo-8E3, the first to fourth digits of the DISPLAY area of the RAM, that is, [0,3], [0,2], [0
.
It is output as I-5D7. At this time, as a so-called zero suppression process, the display of unnecessary high-order ZU is prohibited, and only significant figures are displayed. Also, if (1111) is written as a redundant code in any digit in the DISPLAY area, the display data signal SD7 is generated, and this is one position higher than the most significant digit as shown in Figure 2d. In the digits, it provides the member sign display. Further DISPL
If (0111) as a redundant code is written in any digit of the AY area, the display data signal S Di,
S D2. S D3. SD7 are generated and these result in the display of the letter F as shown in FIG. 2e. When the control signal Sla is generated, the contents of the COL area of the RAM are checked, and if it is 1, the display data signal SD6 is generated.

Therefore, in step A4, RAM (7) DISPLAY
The contents of the area are displayed on the display section (15) in a time-sharing manner.

In this case, the contents of the DISPLAY area are CI.

The current time is displayed as the contents of the OCK area and the colon is lit, but since the contents of the CLOCK area are cleared when power is started, the display section (15) displays 0:Oo.

On the other hand, the control signals SEo, SE2.
Since S and Io are input to the operation input unit (61), at this point, if a key is operated on the operation unit (16), the corresponding λ data signals SAo, SA1, and SA2 are input to the microprocessor.

The microprocessor interprets the input data signal and
If it corresponds to a numeric key, write it to the NK area 1 of the RAM, convert the input data signal of 3 pins to a BCD code according to the conversion table in Figure 6B, and write it to the NKB area, and write it to the NKB area. If it is compatible, it is written in the FK area 1 of the RAM and the human input data signal is similarly written in the FKB area as a 4-hint code according to the conversion table shown in FIG. 6B.

As you can see from the explanation below, the A4 screen constitutes one main pump that makes up a circular loop of one gram, and key operations are performed manually. The operation duration is sufficiently long compared to the step transition time of the program, so the program will pass through the A4 step many times during the key operation, but the micro processor sensor detects each key operation. R on the first pass
AMO': Write 1 in the KE area to distinguish the second and subsequent passes from the first pass. That is, the microprocessor checks the contents of the KE area in the A4 step, and if it is 1, it means that even though it is a key operation state, such operation is already the same as the first detected key operation. Then, the FK area and NK area 0 of the RAM are written.

Also, if no key operation is performed at step A4, press R.
All O's are written in each of the FK, NK, and KE areas of AM.

In step A4, the above control i = - No. SIo
After the occurrence period, the data is written to the COL area of the RAM so that no color processing is performed.

After the A4 step, the program moves to the A5 step knob.In the A5 step, it is checked whether the type of key operation on the A4 step is a function key. The area contents are checked, and if it is 0, go to step A2, and if it is 1, go to step A6.

In this case, assuming that there is no key operation on the A4 step,
Return to Step 2. As long as there is no function key operation from now on, the program number will be A2゜A 3. A4. A
5. Cycle through each step.

[Timekeeping processing]

When the time reference signal TB arrives at the INτ terminal, the microprocessor interrupts all other execution processes at that point, performs the time measurement process in the [time measurement] routine (Figure 15B), and then restarts the process again. Return to the step at the time of interruption.

[M1 time corchin L; l: 60Hz time reference signal T
The number of arrivals of B is counted, a minute signal is generated, and the current time in the CLOCKfl area of the RAM is updated using the received minute signal. The first step is Bl.
In the step, 1 is added to the contents of the CNT1 area of the RAM, and in the continuation<B2 step, the contents of the CNT1 area are determined, and if it is not equal to 60, the process returns to the step at the time of interruption, and if it is equal to Move to step. That is, B
Moving to step 3 means that 1 second has passed.

In step B3, O is written in the CNTl area, and the command:
At step B4, 1 is written in the SEC area of the RAM, the elapse of one second is stored, and the program then moves to step B5.

In step B5, 1 is added to the CNT2 area of the RAM, and in the subsequent <86 steps, the contents of the CNT2 area are checked.
, if it is not equal to 60, returns to the step at the time of interruption, and if it is equal, moves to step B7. That is, moving to step B7 means that one minute has passed.

In step B7, 0 is written to the CNT2 area, and the process continues.
At 88 steps, 1 is added to the CL and OCk areas of the RAM. At this time, the carry from the first digit [0, 3] to the second digit [0, 2] in the CLOCK area is lO progress, and the carry from the second digit to the third digit [0, 1]/. In the hexadecimal system, the carry from the third digit to the fourth digit [0,0] is carried out in the decimal system, and when the contents of the CLOCK area indicate 12:59, the next addition of 1 is performed. When this is done, the contents return to the state showing 1:00. The program then returns to the step at which it was interrupted.

Therefore, in the (timekeeping) routine, a timekeeping operation is performed under the time reference signal TB, and the CLOCK area of the RAM is updated with the current time.

As is clear from the above explanation of [Start of energization] and [Time measurement processing], when the microwave oven is energized, all areas of the RAM are first cleared, and then the time measurement operation is performed in the RAM o) CLOCK area. At the same time, the contents are displayed on the display section (1
5) will be displayed. In this case, the time has not been set in any way for the contents of the CLOCK area, so the display (
In 15), the time measurement status from 0:00 after the above-mentioned start of energization is displayed (a).

[Time setting]

The CLOCK key is used on the operation section (16) to set the time on the display section (15). The key operations are OK.The transition of the block diagram will be explained below in accordance with the above key operation order.

The progress of the program will be explained below in accordance with the above key operation order.

As mentioned above, the program is [Ininyar] Ku-chin A2
It cycles through steps A5 to CLOCK.
When the key is operated, this key operation is detected at step A5 and the process moves to step A6.

In step A6, the contents of the FKB area of the RAM are checked to see if the above-mentioned operation key is the CLOCK key, and since it is the CLOCK key in this case, the process moves to the [CLOCK key].

[In the CI step, which is the first step of the clock cortin, all 0s are written to the TIMER area of RAM and its contents are cleared, and then in the C2 step and C
Participates in three steps sequentially. At step C2, the contents of the TIMER area are moved to the DISPLAY area, and at step C3, 1 is written to the COL area in preparation for displaying the current time. The program then moves to step C4, in which the process exactly the same as step A4 of [Initial Cortin] described above is executed, and then moves to step C5.

The C5 stepper examines the contents of the FKflI area of RAM,
If it is 0, proceed to step C8, and if it is 1, proceed to step C6. Since the key operation time on the operation unit (16) is sufficiently long compared to the progress of each step of the program in the microprocessor, the CLOCK key operation described above [at first when moving to the CLOCK CORNER, the RAM (7)
The KE region 1 key operation continuation state is stored, so when exiting step C4, the FK region and NK region remain at 0. Therefore, the PtJ-gram moves to the C8 scale. In the C8 step, the content of the NK area of the RAM is checked, and if it is 0, the process moves to the C2 step, and if it is 1, the process moves to the C9 step.

Now, since the contents of the NK area are also 0, the IJ gram cycles through each snap from C2 to C5 and C8. If the CLOCK key operation is no longer performed during this circulation process, the contents of the KE area will become 0, so any subsequent new key operation will be C4.
− will be detected in steps.

Then, when the next number key l is operated, such key operation is detected in step C4, and the program moves to C5 and C8.
, C9. In the C9 step, RAM (
7) The contents of each digit in the TIMER area are softened by one digit toward the higher digits, and the contents of the NKB area in RAM are changed to TI.
The first digit [1°3] of the MER area is written, then C
Move to step 2.

Therefore, the program will remain in C until there is a new key operation.
The contents of the TIMER area are displayed during the circulation process. That is, the display state in this case is 0:02.

After that, when the numeric keys [D, lN(') are operated at 11, the set time will be displayed on the display (15) and 2 o'clock θ in °C.
The display state 2:00 is obtained without indicating the minute, and the program L1 program still cycles through each step of C2, C3, C5, and C8.

Finally, when the 14 and CLOCK keys are operated, such key operations are detected at step 04 and the program moves through step C5 to step C6. RAM in C6 step
By looking at the contents of the NKB area, it is determined whether the current operating key is the CLOCK key, and if it is not the CLOCK key, the process moves to step C2, and if so, the process moves to step C7.

In the C7 step, the content power CL of the TIMER area of RAM
The gronnogram is moved to the OCK area, and the gronnogram will cycle through the steps A2 to A5 of the [initial cortin].

Therefore, -(, L2 The second CLOCK key operation is performed at the time of 2:00.-4 This is RAM (/, J C
The LOCK area is updated as time passes from 2:00, and the correct current time is displayed on the display section (15).

[Timer operation]

For example, maximum niiino [502o output fu'i of J wave output
(When driving for 10 minutes, the operation f'l Sli
At (16), key operations are performed in the following order.

Hereinafter, moving the nib Ll shim in accordance with the above key operation order will be explained.

As mentioned above, the program is
Each routine from 2 to A5 is cycled, and therefore -CT
When you operate the I M E R key, this key operation is A4.
Detected in step, program is A5. Move through each step of A6 to step-CA7. A7 Sue 1
In the Tsubu, it is checked whether or not the above operation key is the TIMER key by looking at the contents of the FKB area of the RAM.In this case, since it is the TIMER key, the program is
Moving on to Chin.

[In step D1, which is the first step of the timer cortin, all O's are written in the TIMER area of the RAM to clear its contents, and then steps D2 and D3 are applied in sequence. In the D2 step, the contents of the TIMER area of RAM are moved to the DISPLAY area, and in the DA state, 1 is written into the RAM area, and the contents of the TIMER area of RAM are moved to the DISPLAY area.
In step [Initial Corutin, the process exactly the same as step A4 is executed, and then the process moves to step D5.

In step D5, the contents of the FK area of the RAM are checked, and if it is 0, the process moves to step D9, and if it is 1, the process moves to step D6. Furthermore, in the step D9, the contents of the NK area of the RAM are checked, and if it is O, the process moves to the D2 step, and if it is 1, the process moves to the DIO step.

When exiting step D4, the contents of the Fk and NK areas of the RAM are both O unless there is a new key operation, so the program returns to step D2. D3. D 4゜D
5. Each step of D9 is cycled, and 0 is displayed on the display section (15>).

Then, when the next numeric key ■ is pressed, the refusal operation is detected in the above D4 scan, and the program returns to D5. D
9. D10. Go back to D2 S-r knob via each steno knob of D11. RAM (y
, the contents of each digit in the +TIMER area are left by one digit toward the upper digits, and the contents of the NKB area in RAM are changed to TIME.
It is inserted into the first digit [1, 3] of the R area.

In the Dll step, 1 is written in the RAM (psET area) to store that at least a 1-digit timer value has been input.

After that, B112 Ram will D again until there is a kill operation.
2. D3. D4. D5. Each step of D9 is cycled through, and the contents of the TIMER area are displayed during the cycle.

After that, when the numeric keys o, o, and m are operated in the same way, the timer setting time of 10 minutes is displayed on the display section (15), and the φ゛ display @1000 is obtained, and the program is executed in D2.
D3. D4. D5. Cycle through each step of D9.

There is a key operation that is behind the scenes, and if it is a F〉Kun Yong key operation, BU [J Gusim is D6. D7. After each step of D8, return to step D2. D6. In each step D7 and D8, the contents of the FKB area of RAM are checked.
It is checked whether it is the wER key, 5TART key or LiCLEAR key, and if any of them is applicable, it is immediately pressed
Move to clear corten.

In this case, the new key operation is the POWER key operation, so move to [Power Colchin].

[In the E1 step, which is the first step of the Hower coroutine, the contents of the SET area of RAM are examined, and it is
If so, go to step E2, and if it is 0, go to step E4. In E2 step, RAM, TIMER
The contents of the area are checked, and if it is 0, the process moves to step E3, and if it is not 0, the process moves to step E5. In step E3, the contents of the TEMPA area of the RAM are checked, and if the content is 0, the process moves to step E4, and if it is not 0, the process moves to step E5.

In step E4, the contents of the TM area are examined.

If it is 1, move to the [Quima Cornan's D2 step], R knob, and if it is 0, move to the [Temperature] routine.

Now, the contents of the SET area are 1℃, and TIME
The contents of R area υ are 1o and 4 contents, and since it is not CO, zoLJg7m moves to E5 step 7no.

E5 Snap/Bu Ti, t RAM D I S P LA
0 is entered in the Y area and its contents are cleared,
Then E6. It is applied to each menu of E7 sequentially. E6 step Tl;! POWER area ty) Contents are DIS
It is moved to the first digit [0, 3] of the PLAY area. In the E7 step, the process exactly the same as step A4 of the [Initial] routine is executed, and then the process moves to the E8 step.

In the E8 sub-i-tub, check the contents of the FK area of RAM. If it is O, tl is in the Ell step, and if it is 1, E9
Move to step. Furthermore, in Ell desp, NK of RAM
Check the content of the domain, and if it is 0, proceed to step E6, and if it is 1, proceed to step E12.

When exiting the above E7 step, the contents of the FK and NK areas of the RAM are both O unless there is a new key operation, so the program starts at F6. B7. The steps B8 and E11 are cycled through, and 0 is displayed on the display section (15).

Then, when the next number key (5) is operated, the refusal operation is detected at the F7 step mentioned above, and the program returns to E8.
E 11. E12. After going through steps F and 13, return to E6 stencil. In step E12, the contents of the NKB area of the RAM are written to the RAM (7) POWER area. In step E13, 1 is written to the PWR area of RAM.
is written to memorize that the output value has been set.

After that, the program returns to F6. until another key is pressed.
B7. B8. Each step of Ell is cycled through, and the contents of the POWER area are displayed during the cycle.

That is, in this case, display state 5 is obtained on one display section (15) without showing an output value of 50%.

If there is a secondary key operation and it is a 7γ key operation, the program will return E9. E After each step of 10°, return to step E6. F9. At each step of Elo, check the contents of the FKB area of RAM and use 5T.
It is checked whether it is the ART key or the CLEAR key, and if either of them is applicable, the [Star!・Col-
Moving on to Chin or Clearcorchin.

In this case, the new key operation is the 5TART key operation, so move to [Start Coordination].

[In step F1, which is the first step of the start corchin, the open/closed state of the microwave oven door (14) is checked. At this point, the signal DOR is input to the B1 terminal of the microprocessor /su and the door is closed.
When the signal DOR goes off, the program moves to step F6.

In step F6, the contents of the TM area of RAM are checked,
If it is 1, move to step D2 of the timer code; if it is not 1, move to step F7. At step F7, the contents of the TP area of the RAM are checked, and if it is 1, the process moves to step 2 for the temperature cortin, and if it is not 1, it moves to step L4 for the defrost cortin.

Sa-C1, In step F1 of F1, now the door (14)
Assuming that τ is closed, the ``gram'' moves to the F2 steering knob. In the F2 step, the contents of the SET area of the RAM are checked, and if it is not 1, it is moved to the F6 step, and if it is 1, it is moved to the F3 step. Now, in the SE′r area, [term(man) L −f n(7) D 11st′j ・y
Since 1 is written when 'l/ is passed, the program moves to step F3.

In the F3 step, look at the DF area of RAM and its contents are 1.
If so, go to step F8, and if it is 0, go to step F4. Now the content is 0, but move to F4 step,
In this step, the contents of the TEMPA area of RAM are examined, and since they are now 0, the process moves to step F5. F5
In the step, it is checked whether the content of the TIMER area of the RAM is 0 or not, and since it is the content representing 10 minutes and is not 0, the process moves to step F9.

In step F9, a signal PO is generated at the heating instruction output terminal F1 of the microprocessor. Therefore, at this point, the output of the microwave is started, and from then on, the output state of the LJ wave continues until the signal PO disappears.

The program then F10. F 11. F12
Through each snap, it reaches F1a space:, r knob. F.I.O.
At step 7, 1 is written into the BSYff4 area of the RAM, and it is stored that the microwave is in the output state. F
In the first step, the contents of the RAM POWER area are moved to the PWRB area. Therefore, in this case PW
The value 5 representing the 50% output value has been entered in the RB area. In the F12 stave, the number 10 is written in the PWRA area of the RAM. F13 speed 7 is RAM D
It is checked whether the content of the F area is 1 or not, and since it is not 1 now, the process moves to step F15. TM in F15 step
It is checked whether the content of the territory is 1 or not, and since it is now 1, move to F16 SteSob.

At step F16, the contents of the TIMER area of RAM are set to D.
The ISPL and AY areas are moved, and in the continuation<F17 step, the process exactly the same as [Initial Colchin's A4 subvup] is executed. Therefore, in this case, the contents of the TIMER area represent the timer setting time lo minutes, so F17
In the step, a display state 1000 is obtained on the display section (15).

The content of the BSY area of RAM is checked in the controlling F18 step, and if it is 1, the F19 step/knob is set to 0.
Then move on to the F51 step. F in F51 step
The contents of the K area can be checked. Immediately, if the next new key operation is not a funcrayon key operation, it will immediately return to F13 step, and if it is a function key operation, it will return to F52.
- Return to step F13 through each step 7 of F55. F
In each step from 52 to F55, the contents of the FKB area of RAM are checked and T! It is checked whether it is the MER key, TEMP key, CLEAR key, or 5TART key, and if it corresponds to any of them, F56 step and F5 respectively.
7 steps, [clear cortin, [start cortin]
Move to Ten. In step F56, check the contents of the TP area, if it is 1, go to step F13, and if it is 0, go to [
Move to the D2 step of Timer Corchin. - In the F57 step, check the contents of the TM area, if it is 1, go to F13; if it is 0, go to [71i degree]
Move to the second step of the routine.

Now, in the F18 step mentioned above, the contents of the -C, BSY area are now 1, so move on to the F19 step, and in this step, do the same thing as the Fl step.
) is open/closed, the door opens and I move to [stop corchin], and the door closes and I move to F20 speed.

[In the stop color ten, 0 is stored in the RAM (7> B S Y area) in the Gl step, which is the first step knob, and in the continuation <G2 step and G3 step, the microphone The signals PO and TE at the heating instruction output terminals Fl and Fo are made to disappear, respectively.That is, the microwave oscillation is stopped.The program then returns to step F13.

Now, in step F19, if the door (14) is now closed, the program moves to step F20. The F20 step records the elapsed seconds. In other words, the contents of the RAM (7) SEC area are checked and it is
If it is 1, it moves to F22 step via F21 step.

In step F21, 0 is written to the SEC area of RAM, and in step F22, the contents of the DF area are checked, and since it is now 0, the process moves to step F24, in which the contents of the TM area are checked, and now it is 1. Therefore, move to step F43. In F43 step, RAM T
The internal value of the IMER area is subtracted by one second. Continued F4
In step 4, it is determined whether the content of the TIMER area is 0 or not. If it is 0, [0'I
If there is no IS, move to step F45. In step F45, the [power control corchin] is executed as a subroutine.

[When the execution of the power control corchin is completed, the program moves to step F46, and in this step the FK of RAM is
The content of the area is checked, and if it is 0, the process returns to the F13 step, and if it is 1, the process moves to the F47 step. In the F47 step, the contents of the FKB area of the RAM are checked to see if the new Funkun R operation is the 5TOP key, and if it is a 5TOP key operation, it is sent to the [Stop] routine described above. If not, move to F13 speed up.

Therefore, unless there is a fan crayon key operation in the rear guard, Gussim is F13. F15. F16～
It circulates through each slur of F20°F46, and F21. every second in the circulation process. F22. F
24. You will proceed through each step from F43 to F46.

In the [banner control] rule 7 that is executed every second, the first step, the Hl step knob, is stored in the RAM.
has been changed to the DF territory tone, and now its content is O, so H3
Move to step. The H3 step checks whether the output value has already been set.

That is, the contents of the PWR area of RAM are adjusted and it becomes 1.
If so, go to H4 step Z; if O, go back to F46 step of the start corchin. In this case, the content of PWH is 1, so the process moves to step H4.

In the H4 step, the contents of the PWRA area of the RAM are subtracted by 1, and in the continuation <H5 step up, the contents of the PWRA area or O
It is checked whether or not, and if it is 0℃, go to step H6,
If it is not 0, the process moves to the H1l step. In this case, PW
10 is written in the RA area at the F12 step of the [Start] routine, and the program moves to the H11 step knob.

In the H1l step, the contents of the RAM (7) P W RB area are subtracted, and continuation <H12 Sdenbu CP
It is checked whether the contents of the WRB area are 0 or not.
Return to Chin's F46 step. In this case, the output value 5 is written in the PWRB area by the FIL step knob of the start code, so the program returns to step F46.

In the above circulation process, the program passes through the [Pano control corchin] every second, so when the contents of the PWRB area of the RAM become O, that is, in this case, the [Star 1-'] line is executed. 5 seconds after the start, move to H13 step.

In step H13, the signal PO at the heating instruction output terminal F1 of the microprocessor is made to disappear.

That is, the microwave oscillation is thereby stopped.

The program then returns to Step 7 of F46 in [Star[] Leloof.

In the subsequent cycle of the program, 71, the RAM P
The point at which the contents of the WRA area become 0, that is, [star 1-]
The process moves to step H6 10 seconds after the start of execution of the roof.

At the H6 door knob, 10 is written in the PWRA area of the RAM, and then the contents of the DF area are checked, and since the contents are now O, the process moves to step H9. H9
In step, the contents of the POWER area of the RAM, that is, the output value 5 in this case, is written to the PWRB area, and then -
:H2O bus:r7 generates a signal PO at the heating instruction output terminal Fl of the microprocessor. The program then returns to step F46 of the [Start Correct].

Therefore, in the above circulation process, the program goes through the [power control] routine every second for the odor, one cycle is 10 seconds, and the microwave is oscillated for 5 seconds within one cycle, eventually achieving 50% output. can.

- On the other hand, in such a circulation process, the contents of the TIMER area of RAM are decremented by 1 second and go by 1, so when the contents become O, that is, in the present case, After a minute has elapsed, the buzzer program moves to [buzzer cortin] in step F44. In the above circulation process, the contents of the TIMER area are displayed at step F17. This display content is nothing but the remaining time of the timer.

[Buzzer Korchin's 1st. The second step is If,
In the I2 step, the output terminal Fl of the microprocessor
and the signals PO and TE in FQ are made to disappear. The program then proceeds through steps (1)3 to (15). 13
In the step, the buzzer duration is 3 in the CNT3 area of RAM.
The number 3 representing seconds is written. The I4 step generates a signal BZ at the buzzer output terminal F3 of the microprocessor sensor.

In step I6, the contents of the TIMER area of RAM are set to DI.
It is moved to the SPLAY area. In the continuation <18 steps, the process exactly the same as the A4 step of [Initial Cortin] is executed. Next, in step I9, the contents of the SEC area of the RAM are checked to determine the progress of the cedar tree. Immediately its contents 0
If it is 1, it will return to the I5 step, and if it is 1, it will return to the IIO step.
Moving on to the knob. In the 110 sub/p, 0 is written to the SEC area. In the next <Illll step, the contents of the CNT3 area of RAM are also erased, and in the subsequent 112 sub7, the contents of the CNT3 area are checked, and if it is not O, the process goes to step I5, and if it is 0, it goes to step 113. Move to.

At 113 steps, MicroProt! The Ig signal BZ at the buzzer output terminal F3 of 7'v is made to disappear.

Therefore, when the buzzer cortin starts executing, the microwave oscillation stops and the buzzer is activated, and the program is executed as I5. I6. I8. Each step of I 9 is cycled, and during the circulation process, the step of 10°I 1 is rotated every second.
1. When the contents of the CNT3 area of the RAM become 0 after going through each step of 112, that is, after 3 seconds have elapsed from the start of execution of the [NOZER] runan, the process moves to step 113 and the buzzer drive is stopped. The program then moves to [Clearcortin].

[In the J1 step of the clear cortine, all areas of the RAM are cleared except for the CLOCK, CNT1, and CNT2 areas, and the program then returns to the A2 step of the initial record routine.

Therefore, unless there is a new key operation after that, the program will run as A2. A3. A4. A. Each step in step 5 is cycled through, and during the cycle, the current time or the display section (15
) is displayed. That is, the microwave oven completes all of the above-mentioned timer operations and enters a standby state.

[Temperature operation]

For example, when operating at 50% of the maximum microwave output until the temperature of the food reaches 90°C, the following key operations are performed on the operating section (16) in the following order.

The program progress will be explained below in accordance with the order of key operations.

As mentioned above, the program is [initial] A.
2 to A5, and thus -CT
When the EMP key is pressed on the operation unit, this key operation is detected at step A4, and the program is executed at step A5. A 6゜A7
After each step, the process moves to step A8. In step A8, the content of the FKB area of RAM is checked to see if it is the above operation key or the TEMP key, and in this case it is TEM.
Press the P key to move the program to [Temperature Colchin].

[Temperature] In the first step of the routine, all O's are written to the DISPLAY area of RAM and its contents are cleared, and then 2. 3. Then move on to each step in step 4 in order. In K2 step, RAM(7)T
EMP A area contents or DISPLAY area [0,3
ko, [0, 2], and in the K3 step, the RAM T
P area 1 is written, and in step K4, the process exactly the same as step A4 of the initial cortin is executed, and then the process moves to step 5.

In the K5 step, the contents of the FK area of the RAM are checked, and if it is 0, the process moves to the 9th step, and if it is 1, the process moves to the 6th step. Further, at step 9, the contents of the NK area of the RAM are changed to 2 steps if it is 0, and to 10 steps if it is 1.

As mentioned above, when exiting the 4th step, the contents of the R, AM, FK, and NK areas are all 0 unless there is a new key operation, so the program is executed in 2. 3. 4°K5. 9 steps are cycled through, and 0 is displayed on the display section (15).

Then, when the next number key (9) is operated, such operation will be detected in 4 steps as described above, and the program will proceed to 5. 9
．． After passing through the KIO and Kll steps, the process returns to step 2. In the KIO step, the contents of each digit in the TEMPA area of RAM are shifted by one digit toward the upper digit, and
The contents of the NKB area or the first digit [0,
7]. In the Kll step, RAM SE
1 is written in the T area to store that at least a one-digit temperature value has been input.

After that, the program will return to 2 until there is an operation.
3. 4. 5. 9 steps are cycled through, and in the process, the contents of the TEMP Afijf area are displayed.

Thereafter, when the number keys are operated in the same manner, the display section (15) shows 90'C as the set temperature, and the display state 90 is obtained, and the program 7 is set to 2. 3. 4°K5.
Cycle through each of the 9 steps.

After that, if there is a new key press, or a function key press, the program will return to 6. 7. Then go through each step of 8 and return to step 2.

K6. 7. In each step of step 8, check the contents of the FKB area of RAM by pressing the POWER key, 5TART key or CL.
EAR key or key, any of them corresponds to 4-
If so, immediately move to the [Paso coroutine, [Start coroutine] or [Clear coroutine].

In this case, the new key operation is the POWER key operation, so [Move to Power Corchin 1), RAM (7) SET
The area is 1, the TIMER area is 0, and the TEMPA area is not 0, so the program enters the E5 step. Therefore, when the l key is operated following POWER, the output value 50% is written in the POWER area of the RAM, and 1 is written in the PWR area, as in the case of the timer operation described above. The display section (15) can display 5 completely.

The program is F6. F7. F8. Each step of Ell is cycled through, and when the continuation < 5 TART key is pressed, the process moves to E9 step and then moves to the [Start corchin].

[When you enter the start corchin, the program will start from F1 to F.
4 steps in sequence, and then move to step F8. In this step, a signal TE is generated at the output terminal Fo of the microprocessor. Therefore, the relay coil (67) is energized, the relay contact (59) is turned on, the chopper motor (31) is energized, and the chopper (22) starts rotating. The riveting circuit (118) is activated by the -jj signal INH, and the temperature output MT is fixed at -1 Ov for a predetermined period of time. This output value corresponds to -20°C, but of course it is not the actual temperature of the food being cooked.

Progera l then moves to step F9, in which microwave oscillation starts, and then FIO~F13
．． F14 varnish for each of F15's 'j' ybu friends:''
Move to the r knob. F14:2. RAM + 7)T in step
EMP Contents of area B [1, 7], [1, 6] D
Moved to [0,3, [0,2] in the ISPLAY area,
And the contents of the RD area are (0, 1') of the DISPLAY area.
transferred to l.

After that, norograno is F as in the case of [timer operation].
17. F18. F 19. F20. F
46. F13. F15. Cycling each step of F 14, and in the circulation process F21;L every second
- Enter the tip. After step F21, the process moves to step F24 via step F22, and since the content of the TM area is now 0, the process moves to step F23.

With F23 Stetsuno, 0 is written to all bits in the TCNT area of RAM, and with F25 Steno knob, the contents of the TCNT area (excluding the topmost focus) are written to the output terminals GO~G3, Ho~H2 of the micro processor sensor. is output to.

That is, the 7-bit count signal 5Go-8G6 or [00
...is output as 0, and therefore the broken line approximation circuit (81
) produces a value of -10V (corresponding to -20'C) at the output terminal (94).

In the following F26 step, the output signal MT of the comparator (83)
It is checked whether the signal MTE is output or not, and if there is no signal MTE, the signal goes to the F27 stave, and if it does, it goes to the F28 stave 9. Now, since the temperature output of the temperature output circuit (82) is -10V, a signal MTE is generated, and the process moves to step F28 and step 17.

In step F28, the 8-bit contents of the TCNT area of the RAM are converted into a decimal number and written into the TEMjBl area. That is, in this case, the content of the word area is 0. The ruling F2
In step 9, 20 is subtracted from the contents of the TEMPB area, and the sign of the subtraction result is written into the RD area of the RAM. In other words, if the content of the RD area is a positive sign, it is expressed in binary (0000), but if it is a negative sign, it is (111).
1). Therefore, in this case, the content of the TEMP B area is 20, and the content of the RD area is a redundant value of 15.

The program then moves to step F33, in which the content of the RAM1)) DFf\i area is checked to see if it is 11 or not, and now it is O-('A to F42 step T7).
move on to In F42 Sdenbu, RAMσl ′r E
Including the contents of the MPB area or its code (, T E M P
It is compared with the contents of area A, and if the former is equal to or greater than the latter, it moves to the [NOSER] routine, otherwise it moves to F45 step 7. In this case, TEM
Since the power of the contents of the PA area (90'C) is human, the progera moves to step F45, and in the same way as [timer operation], [Baku control colubun] is executed in the same way as [timer operation], and then F46 speed is executed. After that, I moved to F13 Sudenbu.

So Puji! Gushim is F13. F15. F1
4. It circulates through each step of F17 to F20 and F46, and during the circulation process, every second, F21. F22. F24. F23, F
25. F26. F 2B, F 29. F3
3. After passing through each step of F42, the power control routine of F45 is passed, and microwave oscillation with 50% output is performed.

Also, in the above circulation process, the contents of the TEMPB area are displayed together with a sign (only in the case of a negative value) at step F17. That is, in this case, the display state is -20. still,
During this time, the microwave oven door (14) is closed, and the microwave oven door (14) is closed.
It is assumed that the TOP key is also not operated.

Thereafter, the blockage caused by the prohibition circuit (118) is released.

I have already mentioned that there are only a few seconds left before the ban is lifted. Therefore, the temperature output MT corresponds to the correct temperature of the food to be cooked. If this temperature is now 30°C, the count signal 5Go-8G6 still corresponds to -20°C, so no signal MTE appears from the comparator (83). Therefore, at step F26 of the above circulation process,
The program moves to step F27 and then returns to step F25. At step F27, 1 is added to the TCNT area of the RAM.

The program therefore operates at F25. until the count signals SGo to SG6 reach a logic state corresponding to the current food temperature of 30°C. F26. Each step of F27 is cycled through, and when the temperature of the food to be cooked is reached, the process moves to step F28.

Similarly, in the F28 step, the binary number in the TCNT area is 10.
It is converted into a decimal number and written to the TEMP B area, and 20 is estimated from the contents of the TEMP B area. It will be done. That is, in this case, TEMPB
30 is entered into the area, and 0 is entered into the RL) area. Progsim then F33°F 42. F45.
Each step of F46 returns to the light/heavy F13 switch, and at step F17, the temperature of the food to be cooked is 30°C, and a value of 30 is displayed.

Yo 1 program is F 13. F15. F14
．． It circulates through each subunono of F17 to F20 and F46, and in the circulation process, it moves from F20 step to F21 every second.
In the step -) °C, the temperature of the food to be cooked is measured, the measured temperature is compared with the temperature applied, and the above-mentioned [[
The Panor Control] routine is executed. Also, the temperature set in 411 is displayed at step F17.

After that, when the temperature of the food to be cooked reaches the set temperature of 90°C, it is detected in the F42 step and the 1st gram is [
Moving on to Buzzer Colchin.

[In the case of the buzzer motor (31), as in the case of timer operation, the microwave oscillation ends at step 11, the signal TE disappears at step 2, and the motor (31) also stops. The program then proceeds sequentially through steps 13, 14, and 5, and in step 5, the RAM is
The contents of the TM area are checked and are now 0, so the process moves to step I7. In step 17, T of RAM
The contents of the EMP B area are moved to the DISPLAY area and then to step I8.

Therefore, the buzzer is activated for 3 seconds as described above, and then the program executes the [In/Yarkonan's A 2. A 3. A 4. The current time is displayed on the display (1) during the circulation process.
5) is displayed. Immediately, the microwave oven finishes all of the above-mentioned [temperature operation] and enters the standby state.

[Thaw operation]・ To thaw frozen food, use the operation section (16) to Key operations are performed in this order.

In addition, depending on this thawing operation, the temperature of the food to be cooked will be 3°C.
The point at which the temperature is raised to 8°C is defined as the thawing midpoint, and the point at which the temperature is raised to 8°C is defined as the thawing end point.The output is 100% until the thawing midpoint, and the output is then increased to 20% until the thawing end point r. Microwave oscillation is generated.

When thawing is carried out using microwave waves, the dielectric constants of water and water are significantly different from 22 and 77, respectively, assuming the dielectric constant of air to be 1. Therefore, if the thawing progresses partially, the thawed water will be exposed to microwaves. It is absorbed intensively and 811 minutes of thawing is further promoted, resulting in uneven thawing, which is undesirable. If defrosting is performed by reducing the microwave output, the occurrence of such uneven defrosting will be reduced, but the defrosting time will become considerably longer.

On the other hand, if the defrosting is performed in two stages for 1J as in the embodiment, an appropriate defrosted state can be obtained in a short time. In other words, until the temperature of the food reaches 3°C, it is either thawed quickly and rapidly at the Takada power station, or with the surrounding furniture, the food is almost frozen, so partial thawing hardly progresses. °
C - (Water is generated due to partial thawing, and therefore thawing is performed at low power until the appropriate thawing end temperature is 8° C.).

As described above, in this embodiment, the defrosting process is carried out in a short time by using high output when there is no risk of uneven defrosting, and low output when there is a risk of it. The temperatures at the intermediate point and the final thawing point r may be changed as appropriate.

Hereinafter, the progression of the LJgram will be explained in accordance with the above key operation order.

The program is as described above.
It cycles through each routine from A5 to DEF.
When the RO5T key is operated, this key operation is detected at step A4, and the program passes through steps A5 to A8 and reaches step A9. In step A9, RAM F
The contents of the KB area are checked to see if the above operation key is the DEFRO8T key; if it is the DEFRO8T key, the process goes to the [Decompress] routine, and if not, the process goes to the A2 step.
Return to Nobu.

In this case, the DEFRO5T key is pressed, so move to the [Defrost] routine.

[Decompression] First step of the routine) Lll Stella - C, RAM (7) DISP LAyfri
The area + all - rO is filled in, and the contents of the area are cleared.

The program then adds +m
Proceed to next step. Each step of F2 and F3-(゛respectively RAM
In the 5L4 step in which 1 is written to each area of SET and DF, the first digit [0
, 3], the redundant value 12 for displaying the letter F, that is, (0111) in binary representation, is written, and in the continuation <L5 step, [Initial cor-chin A4 Ste-knob and all, .
<Similar processing is performed. At L6 step, RAM
O>F The content of the K area is checked, and if it is 0, the process moves to the L4 step, and if it is 1, the process moves to the L7 step.

As mentioned above, when exiting the 5th step, the contents of the FK area are 0 unless there is a new key operation, so the block IJ duram is F4.
．． F5. Each step of F6 is cycled through, and in the table subsection (15>) a table 71e representing DEFRO8T is displayed.

After that, if there is a new key operation, or a function key operation, the program goes through steps L7 to L10 and returns to the L4 Ste/knob. F7. F6, F9. L.I.
In each step of O, look at the contents of the RAM (7) FKB area and press the TIMER key, TEMP key, 5TAR.
T key or CLEAR key τ! If one or more of the following are true, immediately call the maco routine,
[Temperature] Routine, [Start Corten] or [Clear Cortine].

In this case, the new key operation is the START key operation, so move to [START key].

[At the start corchin, move to the F3 step through the Fl and F2 steps in the same way, and in this step
Looking at the contents of the DF area, the process moves to step F8 even though it is currently 1, and then moves to step F13 via snaps from F9 to F12. In the F13 step, the DF area of the RAM is checked, and the content is now 1, so the process moves to the F14 step, and then, in the same manner as in each of the previous operations, F17 to F1 are checked.
20. F46. F13. Each step of F14 is cycled through, and in the cycle, the contents of the DF area of the RAM are checked every second after step F21 and step F22, and since it is now IT, the process moves to step F23. Thereafter, in the same manner, the τ program reaches step F33.

At step F33, the content of the DF area of the RAM is checked, and since it is now 1, the process moves to step F34.

In the F34 step, it is determined whether the temperature corresponding to the contents of the TEMPB area of the RAM is 8°C or higher, and if it is 8°C or higher, the process goes to the F35 step, and if it is lower than 8°C, it goes to the F'37 step.
Move to step. In step F37, it is determined whether the temperature corresponding to the contents of the TEMP B area is 3@C or higher or F. If it is 3°C or higher, the process moves to step F38, and if it is lower than 3°C, the process moves to step F45.

Since the current temperature output MT corresponds to -20° C. due to the action of the inhibition circuit, the program passes through steps F34 and F37, moves to step F45, and enters the [power control] routine at this step.

In the H1 step of the [Pa'no control] routine, the existence of the RAM DF area is checked, and since it is currently 1, H2
In step y, the contents of the DPWR area are checked, and if it is 1, the process moves to the H4 step, and if it is 0, the process moves to the F46 step. The program whose contents in the DPWR area are now 0 moves to step F46 and returns from the step knob to step F13.

The program is F13. F14. F1
7~F2υ.

Each step of F46 is cycled, and in the circulation process, F21. F22. F23
．． F25. F26, F28. F29.
F 33. F 34. After going through each step of F37, the power control routine is entered at step F45, but since the routine directly moves from step 2 to step F46, 100% output microwave oscillation is performed. Also, in the above circulation process, 1, the contents of the TEMPB area are displayed together with the code at step F17.

That is, in this case, the display state is -20.

During this time, the microwave door (142 is closed)
It is also assumed that the 5TOP key has not been fully operated.

After that, when the thread lifting is canceled by the prohibition 101 path (118), the temperature output MT corresponds to the temperature of the food to be cooked. Therefore, in the same way as in the case of [temperature operation] mentioned above, the temperature is measured once every second, and the temperature determined by σ1j is 8.
℃ and whether it reached 3℃ or not. However, the microwave oscillation in case 2 is 100%. Also, the measured t-temperature can be displayed in the F17 step, and if it is that temperature or a negative temperature, the negative sign is also included in the table.

After that, when the temperature of the food reaches 3°C, the F37 step will start.
The F38 stamp number is moved from the pump. In this slur knob, R
The contents of the DPWR area of AM are checked, and if it is 1, the process moves to step F45, and if it is 0, the process moves to step F39. Now, since the contents of the DPWR area are 0, the process moves to step F39 and then F40. Step F45 is reached through each step of F41. In steps F39 and F40, 1 and 2 are written in the DPWR and PWRD areas of the RAM, respectively, and in the F41 knob, PW
The contents of the RD area are written to the PWRB area.

Therefore, in the [hower control] Runan that enters at step F45, (after 1 step, step H2, it is determined that the content of the D PWR area is 1, and the process moves to step τH4. Therefore, as is already clear, the block ``J-gram'' passes through the [power control] routine every second, so at the point when the contents of the PWRB area become 0, that is, in the present case, [execution length of start routine #2 after the beginning, the process moves to step F13, Microwave oscillation stops at the start point.Then, after that, the time when the contents of the PWRA area of the RAM become 0, that is, 10 seconds after the start of execution of start-up
Gram moved from H5 step to H7 step, and in this step? The content of the DF area has been adjusted, and since it is now 1, the process moves to the H8 step, in which the content 2 of the PWRD area is again written to the PWRB area, and the microwave oscillation is restarted in the subsequent <HIO step.

Therefore, once the temperature of the food to be cooked reaches 3°C, the process proceeds sequentially from F21 step to F29 step: r/b once every second, and then F33. F 34, F 37. F38
From step F38 to step F45 after going through each step.
Then, once every second, the temperature il + constant, and then /j! ++ Comparison is made to see whether the fixed temperature has reached 8°C or 3°C, and microwave oscillation is performed at 20% output.

Also, the measured temperature is displayed at step F17.

Thereafter, when the temperature of the food to be cooked reaches 8° C., the food is moved from the F34 stator knob to the F35 stator knob, and then moves to the F4 stator knob via the F36 stator knob. In step F35, the DF area O of the RAM is written, and in step F36, the signal TE at the output terminal Fo of the microprocessor disappears.

The program continues.The content of the TEMPA area is checked at <F4>, and now it is 0.The program moves from step A to F5.In the F5 step, the contents of the TEMPA area are checked, and now it is O. Therefore, [move to Scissor Colchin].

[The same process as the above-mentioned [temperature operation] is executed in the buzzer cortin, and then, after passing through the clear cortin, the progera 11 performs the [initial] routine A2°A3.
A4. The current time is displayed on the display section (15) during the circulation process.

That is, the electric range completes all of the defrosting operations described above and enters a standby state.

[Combination of thawing operation and timer operation] After thawing frozen food, if you want to operate for 5 minutes at 80% of the maximum microphone 0 wave output for 5 minutes, use the operation unit (16). , key operations are performed in this order.

If the request is refused, it is now clear that the previously described [timer operation] will be executed after the previously described [defrosting operation] has been completed.

[Combination of thawing operation and temperature operation]

After thawing the frozen food, if you want to continue operating at 60% output value of Mondai microwave output until the temperature of the cooked food reaches 85°C, set 1 to operation gli (16). Key operations are performed in order.

In such a case, it is now clear that after the thawing operation described above has been carried out, the temperature operation described above will be carried out.

As is clear from the above explanation, according to the present invention, the temperature of the object to be thawed is observed, and when the temperature reaches a constant value, the microwave output is reduced. , an optimum thawing state without a partial thawing state can be automatically obtained in a shorter time.

[Brief explanation of the drawing]

Figure 1 is a perspective view of the electronic lens of the present invention, Figure 2 shows the human power and configuration of the display section of the electronic lens, Figure 4, Figure 3.
IA shows the details of the operation part of the electronic lens (Figure 4 shows the main part 81 of the electronic lens (cross-sectional view, Figure 5 shows the main part of the electronic lens)
The electrical circuit diagram of the engine, Figure 6, is the same as 'Kameki IL! ] Detailed circuit diagram of the manual operation section of the circuit, FIG. 7 is a gas-to-hard conversion diagram, FIG. 8 is a stepped voltage signal waveform diagram, FIGS. 9 and 9 are output i1f characteristic curve diagrams, and FIGS. 10 and 11. 8B detailed circuit diagram of the electrical circuit described above, Section 12 is a measured flow curve diagram, Fig. 13 is a detailed diagram of the microbutton 1 setter, and Fig. 14 is the detailed circuit diagram of the microbutton 1 setter. FIG. 15 is a program flowchart of the microphone 1-f sensor. (60) Microprocessor Patent Applicant -428- 1st fat J

Claims (1)

[Claims] (1) An input means for increasing the thawing command, a microwave generating means for supplying heating energy to the object to be thawed, and the object to be thawed.
temperature measuring means for measuring the temperature of the object to be thawed, and a control means, and the control means controls the microwave generating means in response to the thawing command and the measured temperature so that the object to be thawed reaches a predetermined temperature. When the object to be thawed exceeds the above-mentioned predetermined temperature, the microwave is generated at a second output value, which is lower. range.