JP2006349290A - Cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a cooking device capable of easily recognizing the occurrence of an error when an assembly error occurs at a manufacturing stage or the like even when the components are shared among a plurality of types of products.
SOLUTION: A substantially entire area of the front surface of a microwave oven main body 1a is an opening portion of a heating chamber 2, and an operation panel portion 6 is disposed below a door 3 that opens and closes the opening portion. The model information set by is transmitted to the heating microcomputer, and the heating microcomputer determines whether the transmitted model information matches the preset model information. If they are different, the magnetron and heater The heating operation by is prohibited.
[Selection] Figure 1

Description

  In the present invention, substantially the entire area of the front surface of the main body is an opening for taking in and out the object to be heated in the heating chamber, and cooking setting input is performed below the door that opens and closes the opening and the setting contents are set. The present invention relates to a heating cooker in which an operation panel unit for displaying is arranged.

For example, in a heating cooker such as a microwave oven, the machine room is arranged on the back side or bottom side of the main body for the purpose of increasing the width of the heating chamber and heating larger or more food. In some cases, the heating chamber is formed in substantially the entire area of the front surface of the main body. In such a configuration, an operation panel unit including a key for performing an input operation, a display unit, and the like is provided on a door for opening and closing the opening.
Then, to suppress the increase in the number of circuit wires routed in the main body, the extension of the wiring length, and the increase in the disconnection failure rate, the input information in the operation panel unit is taken in or the display on the display unit is controlled. It is preferable that a control circuit is provided on the operation panel side, and a control circuit for controlling heating means such as a magnetron or a heater is provided on the main body side so that data can be transmitted and received between them. For example, Patent Document 1 discloses an example of a heating cooker that employs the above configuration.
JP-A-11-325479

  By the way, in order to respond to the current diversified market needs, it is necessary to develop and put many models into the market. In such a development situation, in order to suppress an increase in development costs, the parts that can be shared by hardware and software are shared as much as possible, and only different parts for each model are newly designed. Yes. For example, in the case of the heating cooker as described above, the main body size is the same, and the switches and operation keys on the operation panel unit are differently arranged, and the display unit is different in size and arrangement.

However, when the product body size is the same in a plurality of models, there is a possibility that an assembly error may occur at the product manufacturing stage. That is, there is a possibility that a product having a different combination of the main body and the door will be assembled. Then, if at least a part of the software is shared, communication between control circuits can be established even with different combinations, and operation different from the original product specification will be performed when the operation key is operated. It is also assumed. It should be noted that the above assembly error is not limited to the manufacturing stage, and may occur even when a serviceman repairs a product once shipped, for example.
The present invention has been made in view of the above circumstances, and the purpose of the present invention is to correct the error when an assembly error occurs in the manufacturing stage, etc., even when the components are shared among a plurality of types of products. An object of the present invention is to provide a cooking device that can easily recognize the occurrence.

In order to achieve the above object, a heating cooker according to the present invention includes a heating chamber that accommodates an object to be heated, heating means that is disposed in the heating chamber, and that heats the object to be heated; An operation panel unit for opening and closing the heated object and having a door for opening and closing the opening, and for setting cooking and displaying the setting contents below the door In what is arranged,
A heating control circuit for controlling the heating means;
An operation panel control circuit for controlling the operation panel,
A model information setting means for setting and inputting model information for the operation panel control circuit is provided.
Between the heating control circuit and the operation panel control circuit is configured to send and receive data by communication,
The operation panel control circuit transmits the model information set by the model information setting means to the heating control circuit,
The heating control circuit determines whether or not the model information matches preset model information.
According to this configuration, even if the main body of the heating cooker and the door are manufactured with a combination of different models, the heating control circuit is based on the model information transmitted from the operation panel control circuit. Therefore, it is possible to recognize that an assembly error has occurred at the manufacturing stage or the like, and to deal with it.

  According to the heating cooker of the present invention, as a result of sharing the components among a plurality of types of products, it is possible to detect and cope with an assembly error at a manufacturing stage or the like that is expected to occur. It is possible to prevent the cooking device from operating unexpectedly or shipping the product while making a mistake.

Hereinafter, an embodiment in which the present invention is applied to a microwave oven with an oven function will be described with reference to the drawings. FIG. 1 is a front view of the microwave oven 1. Inside the microwave oven main body 1a formed in a rectangular box shape, there is formed a heating chamber 2 that accommodates an object to be cooked and cooks it. The heating chamber 2 is wide in the left-right direction, and is provided with a door 3 for opening and closing the large front opening. Accordingly, the door 3 has a size and shape over a substantial area of the front surface of the main body 1a, and its lower end is pivotally supported.
The door 3 includes a handle 4 for opening / closing operation on the upper end side and a window portion 5 through which the inside of the heating chamber 2 can be seen. An operation panel section 6 is provided below the window section 5 for setting and inputting cooking conditions such as a cooking menu and time, and for performing display according to the control contents. The operation panel section 6 includes an operation key 7, a start key 8, an operation knob 9, a heating time, a heating temperature, and the like for setting a cooking menu, a heating time, a heating temperature, and instructing start and stop of heating. The liquid crystal display 10 and LED11 which display are provided.

FIG. 2 shows a configuration centered on an operation microcomputer (microcomputer) 12 which is arranged inside the door 3 and performs input / output control relating to the operation panel unit 6. The operation microcomputer (operation panel control circuit) 12 receives operation signals such as an operation key 7, a start key 8, and an operation knob 9, and resistance elements 13 and 14 for providing model information of the microwave oven. A divided potential Vs of a voltage dividing circuit (model information setting means) 15 is input. The operation microcomputer 12 controls display on the liquid crystal display 10 and turning on / off of the LED 11.
The operation key 7 and the start key 8 are connected in a matrix to the operation microcomputer 12, and the operation microcomputer 12 reads the on / off state by dynamic scanning. As shown in FIG. 1, the start key 8 is added to the nine operation keys 7, and a total of ten keys are arranged on the matrix. The operation microcomputer 12 reads the rotation direction and the rotation operation amount of the operation knob 9 based on the two-phase pulse signal given from the operation knob 9, and converts the divided potential Vs of the voltage dividing circuit 15 into an A / D converter. 16 is read through. This divided potential Vs is set to a different value depending on the type of microwave oven.

  The operation microcomputer 12 has a built-in serial interface (I / F) 17 and performs serial communication with the heating microcomputer 18 shown in FIG. Data relating to the operation state such as is transmitted to the heating microcomputer (heating control circuit) 18 side. On the other hand, when the operation microcomputer 12 receives the display control data transmitted from the heating microcomputer 18, the operation microcomputer 12 performs display control by the liquid crystal display 10 and the LED 11 in accordance with the data. In the serial interface (I / F) 17, PT is a serial data transmission port, and PR is a serial data reception port.

  In FIG. 3, when the heating microcomputer 18 receives operation data or the like transmitted from the operation microcomputer 12 via the serial interface 19, a magnetron (heating means) 20 or a heater (heating means) according to the operation data or the like. The cooking is controlled by driving 21. At the time of control, the heating temperature is controlled to a predetermined value with reference to a detection signal of a temperature sensor 22 such as a thermistor for detecting the temperature in the heating chamber 2. Further, the heating microcomputer 18 drives and sounds the buzzer (notification means) 23 when it is necessary to notify the user.

  Next, the operation of the present embodiment will be described with reference to FIGS. FIG. 4 is a flowchart showing the contents of control by the operation microcomputer 12 for the portion according to the gist of the present invention. First, the operation microcomputer 12 acquires data RD7 of the divided potential Vs via the A / D converter 16 (step A1). Each subsequent data size is 1 byte. Then, if the data transmitted from the heating microcomputer 18 is not received (step A2, “NO”) and the data transmission timing does not arrive (step A3, “NO”), the operation data in steps A4 to A7. The acquisition process is performed.

  In step A4, the operation microcomputer 12 performs a key scan on the digits 1 to 5, acquires key input data RD1 to RD5, and sets them in a transmission buffer area on an internal RAM (not shown) (step A4). However, as shown in FIG. 2, since this model has only digits 1 to 3 (D1 to D3), data RD4 and RD5 are always “0” (indicating key OFF). For example, the key scan input ports C1 to C4 are pulled up inside the operation microcomputer 12, and when the operation microcomputer 12 sequentially drives the output ports D1 to D3 to the low level, the input ports C1 to C4 are set to the low level. If so, it indicates that the key located at the intersection of the two has been operated (ON).

  Subsequently, the operation microcomputer 12 determines whether or not the operation knob 9 has been operated (step A5). If the input signal changes and it is determined that there is an operation ("YES"), the knob input data in the transmission buffer area is determined. RD6 is updated (step A6). The knob input data RD6 represents the rotation amount and the rotation direction as signed data. For example, the data value when the operation knob 9 is rotated to the right by one click is represented as “0x01”, and the data value when the operation knob 9 is rotated to the left by one click is represented as “0xff”. The knob input data RD6 is cleared when the data is transmitted to the heating microcomputer 18 (step A20). That is, the difference value of the operation amount for each transmission timing is transmitted to the heating microcomputer 18.

  Next, the operation microcomputer 12 adds the acquired data RD1 to RD7 byte by byte, adds a data value DF1 (for example, 0x11) indicating the type of transmission data format, and checksums the lower 1 byte of the sum. The value RD8 is set in the RAM (step A7). FIG. 6A shows a communication data format transmitted by the operation microcomputer 12.

  The data transmission timing is set to, for example, a 20 ms cycle. When 20 ms elapses due to an internal timer or the like (step A3, “YES”), the operation microcomputer 12 is set in the transmission buffer area on the RAM. Data transmission processing is performed (step A8).

  On the other hand, when the operation microcomputer 12 receives the data transmitted from the heating microcomputer 18 (step A2, "YES"), the data reception process of steps A9 to A15 is performed. When the operation microcomputer 12 acquires the reception data TD1 to TD8 in the format shown in FIG. 6B (step A9), the operation microcomputer 12 adds the data TD1 to TD7 one byte at a time, and further holds it in advance. A checksum data CS is added with a data value DF1 indicating the type of data format (step A10).

  In step A11, the operation microcomputer 12 compares the data CS with the checksum value TD8 set in the received data. If the two match ("YES"), not only a communication error has occurred, but also the model settings of the operation microcomputer 12 and the heating microcomputer 18 match (in this case, data Only depends on the data value DF1 corresponding to the format). Accordingly, the operation microcomputer 12 performs display control of the liquid crystal display 10 based on the received data TD1 to TD6 (step A12), and clears the error counter (step A11a) and performs lighting control of the LED 11 based on the data TD7 (step A13). ).

  On the other hand, if the data CS and the checksum value TD8 do not match in step A11 ("NO"), it is determined that a communication error has occurred, so a counter for counting the number of error occurrences is incremented (step A14). . If the number of error occurrences is less than “5” (step A15, “NO”), the process returns to step A2, and if the number of error occurrences reaches “5” (“YES”), the communication that has temporarily occurred Instead of an error, the data value DF1 is different, and it is determined that the model settings of the operation microcomputer 12 and the heating microcomputer 18 are different. Therefore, in this case, the operation microcomputer 12 displays all the display parts of the liquid crystal display 10 and blinks the LED 11 to notify the operator (step A16). FIG. 8 shows an example of a state where the liquid crystal display 10 is fully displayed.

FIG. 5 is a flowchart showing the contents of control by the heating microcomputer 18 for the portion related to the gist of the present invention. When the microcomputer 18 for heating receives the data transmitted from the microcomputer 12 for operation (step B1, "YES"), it performs the reception process of step B2-B16 and the setting process of transmission data, and the transmission timing for every 20 ms. (Step B17, “YES”), data transmission processing is performed (step B18).
The processing in steps B2 to B4 corresponds to the processing in steps A9 to A11 performed by the operation microcomputer 12. When the reception data RD1 to RD8 in the format shown in FIG. The data is added byte by byte, and the data sum DF1 held by itself is added as checksum data CS, and the data CS is compared with the checksum value RD8 set in the received data.

  If they match (step B4, “YES”), no communication error has occurred and the reception has been performed normally. Therefore, the heating microcomputer 18 holds the data RD7 and itself in advance. The data value K1 corresponding to the model data of the existing microwave oven is compared (step B5). Here, since the data RD7 is a value obtained by A / D converting the divided potential Vs by the voltage dividing circuit 15 by the operation microcomputer 12, some variation occurs depending on the accuracy of the resistance elements 13 and 14. Therefore, the data value K1 has a width so as to absorb the variation.

That is, as shown in FIG. 7, when A / D conversion is performed with 8 bits and it is assumed that five models are discriminated, for example, A / D conversion values corresponding to the models A to E are used. The range is set as follows.
Model A / D conversion value
A 0-49
B 50-99
C 100-149
D 150-199
E 200-255
Then, the divided potential Vs corresponding to each model is set so as to indicate the vicinity of the center of the range of the corresponding A / D conversion value. For example, in the case of the model D, the voltage dividing resistance ratio is set aiming at a potential at which the A / D conversion value indicates about “175”.

In step B5, when the data RD7 and the data value K1 match (“YES”), the model settings of the operation microcomputer 12 and the heating microcomputer 18 match. Therefore, when the error counter is cleared (step B5a), the heating microcomputer 18 determines whether or not the operation key 7 and the start key 8 are turned on based on the received data RD1 to RD3 (step B6). It is determined whether 9 has been rotated (step B7).
Then, the heating microcomputer 18 refers to the key input data RD1 to RD3 and RD5 to determine whether or not a specific operation pattern has been input (step B20). Here, the “specific operation pattern” refers to a special operation pattern that does not assume a normal operation mode such as, for example, simultaneously turning on a plurality of operation keys 7. If the key input data or the like is not a specific operation pattern (“NO”), processing such as heating control corresponding to the operation content is executed (step B8).

On the other hand, if it is determined in step B20 that a specific operation pattern has been input (“YES”), the heating microcomputer 18 displays display data for displaying the model data RD7 on the operation panel unit 6 as, for example, a hexadecimal immediate value. Is generated (step B21), and the process proceeds to step B9.
In the subsequent step B9, the heating microcomputer 18 generates display data TD1 to TD7 corresponding to the execution result, and sets them in the transmission buffer area of the internal RAM. Further, the data TD1 to TD7 are added byte by byte, the data value DF1 corresponding to the transmission data format type is added, and the lower 1 byte of the sum is set as the checksum value TD8 in the RAM (step B10). Return to B1.

  In step B4, if the checksum data CS and the checksum value RD8 set in the received data do not match ("NO"), it is determined that a communication error has occurred and the error occurrence counter is counted. Increment (step B14). If the error occurrence count is less than “5” (step B15, “NO”), the process returns to step B1, and if the error occurrence count reaches “5” (“YES”), the buzzer 23 is sounded. Checksum error notification is performed (step B16).

In step B5, if the data RD7 and the model data value K1 do not match ("NO"), there is a possibility that a communication error has occurred temporarily. Is incremented (step B11). If the error occurrence count is less than “5” (step B12, “NO”), the process returns to step B1, and if the error occurrence count reaches “5” (“YES”), the buzzer 23 is sounded. A model information error notification is performed (step B13). Here, the model information error notification changes the ringing pattern so that it can be distinguished from the checksum error notification in step B16.
In the case where error notification is performed in step B13, step B8 is not executed, and as a result, cooking by the magnetron 20 or the heater 21 is not inadvertently performed.

<Example assuming assembly error (1)>
Here, FIGS. 9 to 11 are diagrams corresponding to FIGS. 1, 2, and 6 of a microwave oven (heating cooker) 24 having a configuration of an operation panel unit different from that of the microwave oven 1 shown in FIG. 1. That is, the number of operation keys 7 arranged on the operation panel unit 25 is one, ten, and the LED 11 is not arranged on the operation panel unit 25. For the operation microcomputer (operation panel control circuit) 26 shown in FIG. 10, the voltage dividing ratios of the resistance elements 28 and 29 (R3 and R4) in the voltage dividing circuit (model information setting means) 27 are different. Is set.
For example, if the voltage dividing circuit 27 is R3 = 10 kΩ and R4 = 30 kΩ, the model data RD7 is 0xc0 (= 192), and “model D” is determined in the setting of FIG. On the other hand, if the voltage dividing circuit 15 of the microwave oven 1 is R1 = R2 = 10 kΩ, the model data RD7 is 0x80 (= 128), and is determined as “model C” in the setting of FIG.

However, even in this case, the communication data format setting of the microwave oven 24 is the same DF1 as that of the microwave oven 1 as shown in FIG. Therefore, for example, assuming that the door 30 of the microwave oven 24 is mistakenly assembled to the main body 1a of the microwave oven 1 in the manufacturing process, “YES” in step B4 and “NO” in step B5 in the flowchart of FIG. In step B13, a model information error notification is performed.
However, since the communication data formats of the heating microcomputer 18 on the microwave oven body 1a side and the operation microcomputer 26 on the door 30 side are the same, the heating microcomputer 18 changes the model information to the operation microcomputer 26 in step B13. If the error display data is transmitted, the operation microcomputer 26 can display an error (for example, “H69”) on the liquid crystal display 10 in step A12.

<Example assuming assembly error (2)>
12 to 14 are also equivalent to FIGS. 1, 2, and 6 of a microwave oven (heating cooker) 31 having a configuration of an operation panel unit different from that of the microwave oven 1 shown in FIG. That is, the number of operation keys 7 arranged on the operation panel unit 32 is six, and one operation knob 33 is added. Moreover, LED11 is not arrange | positioned. Further, a liquid crystal display 34 having a larger size is disposed instead of the liquid crystal display 10.
Therefore, in the operation microcomputer (operation panel control circuit) 35 shown in FIG. 13, the key matrix has three input terminals C1 to C3, and the resistance element 37 in the voltage dividing circuit (model information setting means) 36. And 38 (R5 and R6) are set to be different from each other. In this case, not only the model information of the microwave oven 31 is different, but also the communication data format is different as shown in FIG. 14 (DF2, for example, 0x22).

  That is, in the transmission data of the operation microcomputer 35 shown in FIG. 14A, RD1 to RD4 are “key input data”, and RD5 and RD6 are “knob 1 input data” corresponding to the operation knobs 9 and 33, “Knob 2 input data”. In the transmission data of the heating microcomputer (not shown) shown in FIG. 14B, more display control data is required for the liquid crystal display 34 having a larger size, so that TD1 to TD7 are “liquid crystal display data”. "

  Accordingly, assuming that the door 39 of the microwave oven 31 is mistakenly assembled to the main body 1a of the microwave oven 1, it is determined that “NO” in step B4 in the flowchart of FIG. 5, and a checksum error notification is issued in step B16. Will do. In step B16, if the heating microcomputer transmits appropriate data to the operation microcomputer 35, the operation microcomputer 35 continues to determine “NO” in step A11 due to a mismatch between DF1 and DF2, so in step A16. An error message indicating that the model information does not match will be displayed.

As described above, according to the present embodiment, substantially the entire area of the front surface of the microwave oven main body 1a is the opening of the heating chamber 2, and the operation panel 6 is disposed below the door 3 that opens and closes the opening. The microcomputer 12 transmits the model information set by the voltage dividing circuit 15 to the heating microcomputer 18, and the heating microcomputer 18 determines whether or not the transmitted model information matches the preset model information. Judgment is made, and if both are different, the heating operation by the magnetron 20 and the heater 21 is prohibited.
Therefore, even if the main body 1a and the door are manufactured with a combination of different models by making the hardware common, it is possible to recognize and handle that an assembly error has occurred at that stage. It is possible to prevent the microwave oven 1 from operating unexpectedly or shipping the product while making a mistake. In addition, even if software is shared between different models, it is possible to determine the difference between the models, so that the programs of the microcomputers 12 and 18 such as data transmission / reception and checksum calculation are used as much as possible for development. The load can be reduced.

And since the microcomputer 18 for heating makes the buzzer 23 perform the notification to that effect when both model information differs, the operator can recognize easily that the combination of the main body 1a and the door was mistaken. For example, if there is relatively little difference in specifications between different models, it may be possible to communicate even if the combination of the two microcomputers is incorrect if the communication data format is the same. Based on this, the operator can clearly recognize the difference between the two.
The communication data transferred between the operating microcomputer 12 and the heating microcomputer 18 includes checksum data for detecting a communication error, and the checksum calculation specifies the format of the communication data. Therefore, it is not necessary to transmit the data DF1 independently, and the communication data size can be reduced.

If the checksum of the data received from the operation microcomputer 12 does not match the calculated value, the heating microcomputer 18 notifies the buzzer 23 to that effect, and the operation microcomputer 12 When the checksum of the data received from 18 does not match the calculated value, the fact is displayed on the liquid crystal display 10 of the operation panel unit 6.
Therefore, even when there is no display means such as the display 10 on the heating microcomputer 18 side, the buzzer 23 can notify the abnormality. Further, it is possible to easily distinguish the case where no display is performed due to a failure of the circuit component mounting board of the operation panel unit 6 or the operation microcomputer 12 itself, or the operation of the operation key 7 is not accepted. In addition, when data having a different data format is received, error display data cannot be received by an instruction from the heating microcomputer 18 side, but error display can be performed based on the judgment of the operation microcomputer 12 itself. . Therefore, it can be confirmed from the error display that the operation of the operation panel unit 6 is normal.

For the operation microcomputer 12, model information is set by the divided potential Vs set by the voltage dividing circuit 15, and the operation microcomputer 12 reads the divided potential Vs after A / D conversion. A lot of model information can be set by one analog signal input port P1. Further, since the operation microcomputer 12 specifies one model information when the A / D conversion value of the divided potential Vs is within a predetermined range, the resistance values of the resistance elements 13 and 14 are slightly varied. However, model information can be specified by absorbing the variation.
In addition, when a specific input operation is performed on the operation panel unit 6, the heating microcomputer 18 displays the specified model information data on the operation panel unit 6 via the operation microcomputer 12. For example, in the manufacturing stage, It is possible to verify to what extent the effective range for determining the model information is. In addition, for example, it is possible to recognize a case where a resistor that is out of the assumed range of variation is mixed in the resistor element being used.

The present invention is not limited to the embodiments described above and illustrated in the drawings, and the following modifications are possible.
The data transmission cycle is not limited to 20 ms, and may be changed as appropriate according to the individual design. Further, the present invention is not limited to the method of periodically transmitting data, and one of two microcomputers may be configured as a master and the other as a slave, and the master may manage data transmission / reception.
The checksum may be calculated by taking an exclusive OR of each data.
The notification when the checksums do not match may be performed by only one of the operation microcomputer 12 and the heating microcomputer 18.
In addition, the checksum may be used when necessary according to individual products.
The model information setting means is not limited to the one configured by the resistance voltage dividing circuit, and for example, the model information may be set by using a dip switch or the like, and the operation panel control circuit reads setting data by the switch. You may do it.
Data specifying the communication format may be used as necessary.
When the accuracy of the resistance element is high, or when the divided potential is measured and confirmed in advance, the model information may be specified without giving a range to the A / D conversion value.
The present invention is not limited to a microwave oven with an oven function, and can be widely applied to any cooking device including an electric heating means such as a microwave oven and an electric oven.

It is one Example at the time of applying this invention to the microwave oven with an oven function, Front view of a microwave oven The figure which shows the structure centering on the microcomputer for operation The figure which shows the constitution centering on the microcomputer for heating The flowchart which shows the control contents by the microcomputer for operation about the part which concerns on the summary of this invention Flow chart showing the contents of the control by the heating microcomputer for the part according to the gist of the present invention (A) is a communication data format transmitted by the microcomputer for operation, (b) is a diagram showing a communication data format transmitted by the microcomputer for heating. The figure which shows an example of the range of the 8-bit A / D conversion value corresponding to each model information The figure which shows an example of the state which displayed all the liquid crystal displays FIG. 1 equivalent view of a microwave oven (part 1) having a different configuration of the operation panel unit 2 equivalent diagram 6 equivalent diagram FIG. 1 equivalent view of a microwave oven (part 2) having a different configuration of the operation panel unit 2 equivalent diagram 6 equivalent diagram

Explanation of symbols

  In the drawings, 1 is a microwave oven (heating cooker), 1a is a main body, 2 is a heating chamber, 3 is a door, 6 is an operation panel unit, 10 is a liquid crystal display, and 12 is an operation microcomputer (operation panel unit control circuit). ), 15 is a voltage dividing circuit (model information setting means), 18 is a microcomputer for heating (heating control circuit), 20 is a magnetron (heating means), 21 is a heater (heating means), 23 is a buzzer (notification means), 24 is a microwave oven (heating cooker), 24a is a main body, 25 is an operation panel unit, 26 is an operation microcomputer (operation panel unit control circuit), 27 is a voltage dividing circuit (model information setting means), 30 is a door, 31 is a microwave oven (heating cooker), 31a is a main body, 32 is an operation panel unit, 34 is a liquid crystal display, 35 is an operation microcomputer (operation panel unit control circuit), and 36 is a voltage dividing circuit (model) Broadcast setting means), 39 shows the door.

Claims (9)

A heating chamber that accommodates the object to be heated, a heating unit that is disposed in the heating chamber and that heats the object to be heated, and an almost entire area on the front surface of the main body is an opening for taking the object into and out of the heating chamber. There is a door that opens and closes the opening, and a cooking device in which an operation panel unit for setting the cooking and displaying the setting content is arranged below the door,
A heating control circuit for controlling the heating means;
An operation panel control circuit for controlling the operation panel,
A model information setting means for setting and inputting model information for the operation panel control circuit is provided.
Between the heating control circuit and the operation panel control circuit is configured to send and receive data by communication,
The operation panel control circuit transmits the model information set by the model information setting means to the heating control circuit,
The heating cooker according to claim 1, wherein the heating control circuit determines whether or not the model information matches preset model information.   The cooking device according to claim 1, wherein the heating control circuit prohibits the operation of the heating means when the model information is different from preset model information. The heating control circuit
Controlling the operation of the reporting means for reporting to the user,
3. The cooking device according to claim 1, wherein when the model information is different from preset model information, control is performed so as to cause the notification means to notify that effect. The communication data includes checksum data for detecting a communication error,
The cooking device according to any one of claims 1 to 3, wherein the checksum is calculated by adding data for specifying a format of the communication data. The heating control circuit
Controlling the operation of the reporting means for reporting to the user,
5. The heating according to claim 4, wherein when the checksum of the data received from the operation panel control circuit does not coincide with the calculated value, control is performed so that the notification means is notified to that effect. Cooking device.   When the checksum of the data received from the heating control circuit does not match the calculated value, the operation panel unit control circuit controls the operation panel unit to display that fact. Item 6. The cooking device according to item 4 or 5. The model information setting means is configured by a voltage dividing circuit using a resistance element, and sets model information by a divided potential.
The cooking device according to claim 1, wherein the operation panel control circuit reads the divided potential by A / D conversion.   The cooking device according to claim 7, wherein the operation panel unit control circuit specifies one model information when an A / D conversion value of the divided potential is within a predetermined range.   The heating control circuit controls to display the specified model information data on the operation panel unit via the operation panel control circuit when a specific input operation is performed on the operation panel unit. The cooking device according to any one of claims 1 to 8.

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