JP2003111666A - Electric rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To easily change a model on a rice cooking capacity, etc., when a micro-computer board is commonly used for a plurality of models, by using an already existing part, at a low cost without using a jumper socket. SOLUTION: A plurality of terminal parts of a power source for a micro-computer in this electric rice cooker, are formed corresponding to kinds of the rice cooking capacity. When the power source is assembled in, the model on the rice cooking capacity of the applicable electric rice cooker can be changed by changing the connecting position of the terminal parts.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a microcomputer type electric rice cooker in which a microcomputer board is commonly used and the control function can be switched and set according to the difference in rice cooker capacity and other models on the board part. is there.

[0002]

2. Description of the Related Art Generally, an electric rice cooker cooks one bowl,
There are several models with different maximum rice cooking capacities, such as 5.5 go and 3 go. In addition, some recent electromagnetic induction type electric rice cookers have different types of inner pots to be used, and the rated output and other heating control characteristics are different between them.

Therefore, regarding these, it is necessary to set appropriate control functions according to the model (rice cooking capacity, inner pot type) such as rated rice cooking power (rated maximum output) and heating control characteristics.

On the other hand, if a dedicated microcomputer board is made and mounted for each model having a different rice cooking capacity and different kinds of inner pot, the manufacturing efficiency will be deteriorated in addition to the board cost.
The total cost of the product will also increase.

Therefore, recently, a general-purpose type of the above-mentioned microcomputer board that can be commonly used for each model is provided, and a model in which control data can be arbitrarily switched on the manufacturing line corresponding to the model is provided. There is.

Switching of the rice cooking capacity of this conventional electric rice cooker is performed by using a plurality of jumper sockets as external parts on a microcomputer board, for example.

[0007]

Therefore, in the case of such a structure, a jumper socket as an external component is separately required, which increases the cost of the component and requires a labor for the switching work. In addition, it is difficult to judge when switching is made by mistake, and it is also difficult to repair and change.

The present invention has been made in order to solve such a problem, and it is possible to easily and cost-effectively respond to a model such as a rice cooking capacity and a kind of an inner pot by a position of a terminal connection of a power battery on a microcomputer board. It is an object to provide an electric rice cooker that can be switched.

[0009]

In order to achieve the object, the present invention comprises the following means for solving the problems.

(1) Invention of Claim 1 The electric rice cooker of the present invention comprises an inner pot, heating means for heating the inner pot, and microcomputer type heating control means for controlling the output amount of the heating means. An electric rice cooker comprising a power supply battery for supplying power to a microcomputer part of the microcomputer type heating control means, and the power supply battery is installed in a power supply battery installation part of a predetermined circuit board. To the department
It is characterized in that it is possible to switch to the desired model and set the model by providing a plurality of sets of power battery terminal connection ports and connecting any one of them to connect the power battery. . .

Therefore, in such a configuration, the model can be switched and set easily and accurately by simply connecting the connection terminal of the substrate of the backup power supply battery of the microcomputer to a desired connection position.

(2) Invention of Claim 2 In the electric rice cooker of the present invention, in the configuration of the invention of Claim 1 above, the terminals of the power supply battery have a pair of leg portions structure, and one corresponding power supply battery mounting portion. Each of the plurality of sets of connection ports is a pair of connection holes into which the pair of legs are inserted.

Therefore, in such a configuration, for example, by simply inserting a pair of leg portions of a backup power source battery of a microcomputer into a desired pair of connection holes and connecting them, model switching and setting can be performed easily and accurately. be able to.

(3) Invention of Claim 3 In the electric rice cooker of the present invention, in the constitution of the invention of Claim 1 or 2, when the power supply battery is connected, the connection port portion to which the power supply battery is connected. Different input voltages are input to the microcomputer depending on the position, and the microcomputer determines the designated model and sets corresponding control data based on the input voltage value.

Therefore, in such a configuration, for example, by simply connecting the backup power source battery of the microcomputer to the desired connection port, it is possible to easily and accurately based on the value of the input voltage input according to the position. The model can be switched and set, and the corresponding automatic control data is set.

(4) Invention of claim 4 In the electric rice cooker of this invention, in the configuration of the invention of claim 3, when the model is determined by the microcomputer,
It is characterized in that the determined model name is displayed on a predetermined display unit.

Therefore, according to such a configuration, it is possible to easily check, for example, whether or not the position of the connection port of the backup power source battery of the microcomputer is correct by observing the display on the display unit.

(5) Invention of claim 5 In the electric rice cooker of this invention, in the configuration of the invention of claim 4, the predetermined display section is installed on a microcomputer board provided with a power supply battery mounting section. It is characterized by being a display means for a rice cooker.

Generally, it is difficult to electrically connect an electric rice cooker on a production line or a product inspection line to an external device.

On the other hand, an electric rice cooker generally has a display means such as a liquid crystal display panel for displaying a rice cooking menu, time and the like corresponding to its operation panel, which is usually provided on the above-mentioned microcomputer board. . The display means operates together with the microcomputer using the backup power source battery as an operating power source.

Therefore, the display means is effective as a display means for the above-mentioned determined model name.

(6) Invention of Claim 6 In the electric rice cooker of this invention, in the constitution of the invention of claim 4 or 5, the display of the judged model name is made in the line aging step in the product inspection line. The feature is that it has become.

When a power supply battery is connected to the microcomputer board,
The power supply enables not only the microcomputer but also the display operation of the display unit such as a liquid crystal display panel.

Therefore, for example, in the line aging process of the product inspection process, if the model name corresponding to the connection position of the already connected power source battery is displayed on a predetermined display unit such as the liquid crystal panel as described above. The operator can easily check that the connection position is different from the proper connection position, and then can properly change the connection position.

As a result, it is possible to prevent an error in model switching.

(7) Invention of claim 7 In the electric rice cooker of the present invention, in the configuration of the invention of claim 4 or 5, the display of the judged model name is the power supply of the microcomputer board in the product assembly line. It is designed to correspond to the connection of the power supply battery to the battery mounting portion.

Generally, when a power supply battery is connected to a microcomputer board, the power supply enables not only the microcomputer but also a display operation of a display unit such as a liquid crystal display panel.

Therefore, at the same time, if the model name corresponding to the connected connection position is displayed on the predetermined display section as described above, the operator immediately notices that the connection position is different from the intended connection position. It is possible to change the connection position correctly before soldering.

As a result, it is possible to prevent an error in changing the model in advance before the product inspection.

(8) The invention according to claim 8 The electric rice cooker according to the invention is the above-mentioned claim 1, 2, 3, 4,
In the configuration of the invention of 5, 6, or 7, the difference between the models is a difference in the rice cooking capacity. .

Therefore, in this configuration, the model can be switched according to the rice cooking capacity simply and accurately only by selecting the position of the connection port of the microcomputer power supply battery.

(9) Invention of Claim 9 The electric rice cooker of the present invention comprises:
In the configuration of the invention of 5, 6, or 7, the difference in the model is a difference in the type of the inner pot.

As for the inner pan of the electric induction cooker of the recent electromagnetic induction heating type, a new type having a different number of laminated layers and a different combination of materials has appeared from the conventional general clad steel type. , They are used properly according to the product grade.

Of course, these inner pots have different induction heating characteristics, and even if the same electric power is supplied,
The heating output and output characteristics are different.

Therefore, it is necessary to deal with the difference in the type of the inner pots different from each other in the same manner as in the case of the difference in the amount of cooked rice, and the configurations and actions of the above inventions are useful.

[0036]

As a result of the above, according to the electric rice cooker of the present invention, the switching and setting of the control data and the like corresponding to each model,
Only by selecting the connection position of the power supply battery to the microcomputer board, the operation can be performed easily and accurately, the work efficiency is high, and the mistake of switching is unlikely to occur.

Further, since a dedicated part such as a jumper socket is not required only for switching and the switching can be performed by utilizing the existing parts, the product cost is reduced.

[0038]

1 to 8 show the structure of a rice cooker main body of a microcomputer type electric rice cooker according to an embodiment of the present invention, the structure and operation of a main part of the rice cooker main body, and a product inspection. The contents of the system are shown respectively.

(Overall Features) First, in the electric rice cooker according to the present embodiment, one made of a magnetic metal plate capable of electromagnetic induction is adopted as the inner pot 3 on the rice cooker main body side. As a heating means for cooking rice in the pan 3, a bottom of the inner pan 3 is wrapped so as to wrap substantially the entire side wall 3b from the bottom wall 3a of the inner pan 3 through a protective frame (inner case) 4 made of synthetic resin. central portion and side portion of the wall portion 3a, and three sets of work coil C _1, C _2, C ₃ are provided corresponding to the entire circumference of 3 places in the lower side of the side wall portion 3b, also the inner bowl As a heating means for keeping the temperature of the inner pot 3, a heat retaining heater H ₁ corresponding to the entire upper circumference of the side wall portion 3b of the inner pot 3 is provided. Then, the microcomputer control unit 4
By appropriately controlling the drive by means of 2, it is possible to realize an appropriate rice cooking function and heat retaining function.

On the other hand, timer reservation for each of these functions, selection of rice cooking and heat retention menus, and operation setting of the heating pattern corresponding to each menu are provided on the front operation panel section 20 of the electric rice cooker body A. It is performed by the user through various input switch groups 22a to 22h, and finally the work coil C is selected according to the setting contents.
_{1 to} C ₃ and the heat retention heater H ₁ are controlled.

Further, in the central portion of the operation panel section 20, there is provided a liquid crystal display section 21 for displaying each menu of rice cooking and heat retention, and the present time and the remaining time until the rice cooking is completed. The liquid crystal display section 21 is constituted by a display surface of a liquid crystal display 31 provided on the microcomputer board 6B inside the operation panel section 20.

In the case of the present embodiment, the printed circuit board is roughly classified into, for example, work coils C _{1 to} C ₃ such as IGBT.
The microcomputer board 6B comprises a control board 6A provided with the power control means and the microcomputer board 6B.
Further, for example, as shown in FIG.
a to 22h, the operation board 61 portion including the liquid crystal display 30 and the like, the power supply battery installation portion (battery land portion) 35 for backup of the microcomputer, and the rated output variable resistance 3
2 and the like, and includes a microcomputer power supply board 62 portion.

Then, from the front surface to the back surface of the power supply battery installation portion 35 of the power supply board 62 for the microcomputer,
Third plurality of sets of power supply battery connection holes (battery leg insertion holes) A,
B and C, on the other hand, have the corresponding ground side
A third plurality of sets of connection circuit patterns (ground side short-circuit terminal circuits) A, B, C are prepared. For example, the power supply battery 40 for microcomputer backup shown in FIG. By selecting and connecting the leg insertion holes) A, B, C and the connection circuit patterns A, B, C, for example, the first to third three types of models 180 (one bowl) having different rice cooking capacities, 150 (8 go cooked), 100
The functions (rated output, heating output characteristics, etc.) can be switched according to (5.5 combined cooking).

The electric rice cooker as described above is assembled through an assembling process such as the line L ₁ shown in FIG. 6, and its performance is inspected at the product inspection process such as the line L ₂ .

In this inspection process, an aging inspection as shown in FIGS. 7 and 8, for example, is performed, and the correctness of the model setting is also checked at that time.

(Structure of Rice Cooker Main Body) That is, first, as shown in FIG. 1, the rice cooker main body of the electric rice cooker is made of, for example, a stainless steel plate or the like capable of self-heating by an eddy current induced inside. Inner pot made of magnetic metal plate
(Rice cooker or heat insulation container) 3, a synthetic resin bottomed cylindrical protective frame (inner case) 4 formed so that the inner pot 3 can be arbitrarily set, and the protective frame (inner case) A bottomed cylindrical outer case 1 which is an outer housing for holding the outer casing 4, and the outer case 1
And a lid unit (lid) 2 which is openably and closably provided on the upper part of the rice cooker body A which is integrally formed with the protection frame (inner case) 4.

A coil base 7 is provided below the bottom wall portion (bottom portion) 4a of the protective frame (inner case) 4 and a ferrite core is provided above the bottom portion of the bottom wall portion of the inner pot 3 ( Bottom part) 3a in which the litz wires are respectively concentrically wound corresponding to the central part and the lateral part of 3a and the respective positions of the side wall part 3b of the inner pot 3
A pair of work coils C ₁ , C ₂ , C ₃ are provided so as to enclose substantially the entire portion of the inner pot 3 from the bottom wall portion 3a to the side wall portion 3b. An eddy current is induced in the whole to heat the whole substantially uniformly. Then, the work coil C ₁ ,
C ₂ and C ₃ are connected in series with each other. Further, one end thereof is connected to the power supply line of the work coil driving circuit via the rectifying circuit and the smoothing circuit, and the other end is connected to the IGBT (power transistor) in the circuit.

A warming heater H ₁ functioning as a heating means at the time of warming is provided above the side wall work coil C ₃ so that the entire inner pot 3 is effectively and uniformly warmed. It is designed to heat up.

On the front side of the protective frame (inner case) 4 and coil base 7, the work coils C ₁ , C ₂ ,
The above-mentioned IGBT for driving and controlling C ₃ , the heat retention heater H ₁ , the shoulder heater H _2, etc., the heater drive circuit, the microcomputer control unit,
A control board 6A and a control board storage box 5A provided with a rectifying circuit composed of a diode bridge for rectifying a power supply voltage, a smoothing circuit, and the like are provided in a vertically standing state.

The outer case 1 is made of, for example, a synthetic resin material and has a cylindrical cover member 1a in the vertical direction, a synthetic resin shoulder member 11 connected to the upper end of the cover member 1a, and A synthetic resin bottom member 1b integrated with the lower end of the cover member 1a, and a heat insulating and ventilation space portion of a predetermined size between the cover member 1a and the bottom wall portion 4a of the protective frame (inner case) 4. Is formed into a bottomed tubular body as a whole. Then, above the front surface of the outer case 1,
For example, a substantially half-moon shaped operation panel unit 20 as shown in FIG.
Is provided. On the surface of the operation panel section 20, a liquid crystal display section 21 having a sufficiently wide and large display area, a rice cooking switch 22a, a timer reservation switch 22b, a cancel switch 22c, a heat retention switch 22d, a reheat switch 22e,
Various input switches (touch portion of the touch key) such as a menu selection switch 22f, an hour switch 22g, and a minute switch 22h are provided. A shoulder heater H ₂ is provided on the inner peripheral side of the shoulder portion of the shoulder member 11.

The control board 6A is provided in the inner portion (back side space) of the operation panel portion 20 in the outer case 1.
It is in the form of descending diagonally forward from the upper end side, and a microcomputer board 6B as shown in FIG. As shown in detail in FIG. 3, the microcomputer board 6B includes a liquid crystal display 31, a liquid crystal display support member 30, a rice cooking switch 22a, a timer reservation switch 22.
Operation board section 6 provided with various input switches (touch key operation mechanism section) such as b, cancel switch 22c, heat retention switch 22d, reheat switch 22e, menu selection switch 22f, hour switch 22g, minute switch 22h.
1 and on the lower side thereof, the installation portion (land portion) 35 of the backup power supply battery 40 for the microcomputer, which has a circular shape as shown in FIG. 4, and the adjustment output for the rated output (rated heating output) of the work coil. It is composed of a power supply substrate part 62 for a microcomputer having a variable resistor 32 and the like, which are connected by jumper wires or the like so that they may be divided from each other.
Then, depending on the installation mode, these are installed and fixed by being divided from each other, for example, at the slit position of the intermediate portion (in FIG. 1, installed as they are).

The power source battery installation portion 35 for backing up the microcomputer on the side of the power source board 62 for the microcomputer is composed of a circular land portion as shown in the drawing, and on the back side thereof, for example, as shown in A, B and C of FIG. Earth side first to third three sets of connection circuit patterns (earth side short terminal circuits) A, B,
First to third power supply battery connection holes (battery leg connection holes) A, B, and C provided with C are provided.

The first to third power supply battery connection holes (battery leg connection holes) A to C respectively divide the circular land portion into six in the circumferential direction, and each of the diametrically opposite ends is used for the microcomputer backup. The power supply battery 40 has a pair of connection ports into which the (+) and (-) pair of connection legs (lead terminals) 40a and 40b are inserted and connected.

Then, the first to third connection holes A,
Select one of the connection holes of B and C to select one of the connection legs 40 of the power supply battery 40 for microcomputer backup.
Depending on whether the a and 40b are inserted and connected (inserted soldering), one of the corresponding short terminals a to b of the ground side first to third connection circuit patterns A to C shown in FIG. Power supply battery 40 for microcomputer backup
The (-) side connection leg 40b of () is conducted (short-circuited), and the rice cooking capacity of the model is determined as follows.

That is, first, assuming that the a-b terminals of the ground side connection port of the first power supply battery connection hole A of FIG. 5 are electrically connected, the microcomputer control unit 42 composed of the microcomputer is connected via the resistor R _1. The first voltage of + B (V) is input as it is, and based on this, the microcomputer control unit 42
It is determined that the electric rice cooker is of a rice cooking capacity of 180 type (one rice cooker), and rated output and other corresponding control data are set.

On the other hand, next, the second power supply battery connecting hole B in FIG.
When there is continuity between the a and b terminals of the ground side connection port of
In the microcomputer control unit 42, the voltage of + B is the ratio of the resistances R ₁ and R ₂ , that is, (+ B · R ₂ ) / (R ₁ +
The second voltage divided by R ₂ ) is input. And
Based on this, the microcomputer control unit 42 determines that the electric rice cooker has a rice cooking capacity of 150 (8 cooks), and sets rated output and other corresponding control data.

Further, when the ab terminal of the ground side connection port of the third power supply battery connection hole C of FIG. 5 is electrically connected, the microcomputer control unit 42 is different from the above in 0 (V).
The third voltage is input. Then, based on this, in the microcomputer control unit 42, the electric rice cooker has a rice cooking capacity of 10
It is determined that it is 0 (5 meals) and rated output and other corresponding control data are set.

Each of the models (rice cooking capacity size) 180, 150, 100 thus determined is, for example, as shown in FIG. 2, its liquid crystal display section in a predetermined process of a product inspection process described later. 21 is displayed (an example in the case of "180" in FIG. 2).

Further, although not shown, a center sensor housing space is formed in the center of the coil base 7 below the protective frame (inner case) 4 so as to concentrically penetrate therethrough in the vertical direction. A center sensor equipped with an inner pot temperature detection sensor and an inner pot detection switch is provided in the center sensor storage space while being vertically movable and being constantly urged upward by a coil spring. .

On the other hand, reference numeral 2 is a lid unit, and the lid unit 2 is provided with an outer cover 12 made of a synthetic resin which constitutes the outer peripheral surface thereof, and a metal provided between the outer cover 12 and the inner frame 14. Heat insulating structure 13 and inner cover 1 made of metal provided inside the heat insulating structure 13 with packing 17 interposed therebetween
5 and a metal radiator plate 16 provided below the inner cover 15 form a heat insulating structure having a hollow inside. In addition, the heat insulating structure 13 is composed of the upper and lower two metal plates 1.
It is formed by making 3a and 13b face a closed cross-section structure and integrate them.

The lid unit 2 is rotatably attached to the shoulder member 11 on the upper part of the outer case 1 through a hinge mechanism, and is located at a predetermined position of the lid unit 2 on the open end side thereof. A lock mechanism 18 is provided for engaging and opening and closing the lid unit 2 in the vertical direction.

Therefore, in the structure, first, when cooking rice, the inner pot 3 has the three work coils C ₁ , C ₂ ,
By driving C ₃ , almost the entire heat is uniformly generated from the bottom wall portion 3a to the side wall portion 3b side, and for example, in the water absorption step in which rice cooked in water in the inner pot 3 acts as a heat insulating portion, the inner pot 3 The upper part of the bowl is evenly heated to allow uniform water absorption performance almost all over, and when the amount of rice cooked is large, the entire inner pot 3 is heated substantially evenly and cooked efficiently without uneven heating. be able to. In addition, it is possible to prevent the concentration of heat locally on the bottom wall portion 3a of the inner pot 3 in a state where the water content after the boiling step is lost, and to prevent the occurrence of charring. Next, at the time of heat retention, by driving the heat retention heater H ₁ and the shoulder heater H ₂ provided corresponding to the side wall portion 3b of the inner pot 3, the bottom wall portion 3a to the side wall portion 3b of the inner pot 3 are driven.
Also, the entire upper part is uniformly heated with an appropriate heating amount, and heat retention without heating unevenness is realized.

On the other hand, the microcomputer control unit 42 of the control board 6A is provided with a desired recognizing means for deciding the content of the user's instruction input via the input switches 22a to 22h. According to the user's instruction content recognized in, the desired rice cooking or heat retaining function, desired rice cooking or heat retaining menu, predetermined heating output and heating pattern corresponding to those rice cooking or heat retaining menu are set, and the rice cooking heating control means Alternatively, the microcomputer control unit 42 as the heat retention / heating control means is appropriately operated to perform desired rice cooking or heat retention.

Therefore, the user uses the above-mentioned input switches 22a to 22h to cook or keep warm rice, timer reservation, reserved time setting, white rice or brown rice, early cooking, rice porridge, sushi, rice, cooking, etc. By inputting the selection settings of various types of rice cooking or heat insulation such as heat retention or low temperature heat insulation, the corresponding function contents are automatically input to the rice cooking and heat insulation heating pattern setting section through the recognition means in the microcomputer control unit 42. Then, the corresponding rice cooking or heat retention / heating control can be appropriately performed with a desired control pattern.

When the power supply battery 40 for backing up the microcomputer control unit 42 is connected to the microcomputer control unit 42, the first to third power supply battery connection holes A to which the power supply battery 40 is connected, A different input voltage is input depending on either B or C, and based on the input voltage value, a specified model (rice cooking capacity size) is determined and various control data corresponding thereto are set. .

Therefore, in the same configuration, for example, simply by connecting the backup power supply battery 40 of the microcomputer to any of the desired power supply battery connection holes A, B, and C, the value of the input voltage input according to the position Based on the above, the model can be switched and set easily and accurately, and the corresponding automatic control data can be set.

(Assembly and Inspection Process) By the way,
Such an electric rice cooker has a manufacturing and assembly line as shown in FIG. 6, for example.
L ₁Once assembled, the finished product is
In addition, the inspection line L shown in FIG.₂Via, packing
Shipped.

First, in the manufacturing and assembling line L ₁ , the No. 1 step in which the shoulder member 11 serving as a base is introduced, the work coils C ₁ , C ₂ and C ₃ are attached to the protective frame 4, and then the shoulder member 11 is installed. No. 2 process for setting the power supply battery installation section 35 for microcomputer backup of the microcomputer board 6B in FIG.
On the other hand, as described above, the No. 3 step of mounting and setting the power supply battery 40 for microcomputer backup and also setting the clock, and the No. 4 step of attaching the control board 6A described above to the rice cooker body side control board storage box 5A The No. 5 step of attaching the bottom member 1b to the lower part of the main body case, the No. 6 step of storing the inner pan 3 in the protective frame 4, and the No. 7 step of attaching the lid unit 2 to the main body case. The finished product assembled in the No. 8 process is taken out.

In the No. 3 process as described above, the power supply battery 40 for microcomputer backup is installed in the power supply battery installation part 35 for microcomputer backup of the microcomputer board 6B and soldered on the back surface of the board. For example, a pair of connection legs (lead terminals) 40a of the power supply battery 40,
There is a possibility that a size setting different from the actual designated rice cooking capacity of the model is made due to a wrong connection of 40b or poor soldering.

Therefore, in this embodiment, the microcomputer control unit 4 is based on the connection state of the power supply battery 40 to the first to third connection holes A, B and C of the power supply battery installation section 35.
2 rice cooked capacity size (180,150,10
Either of 0) is displayed on the liquid crystal display section 21 as shown in FIG. 2, for example, in the aging step No3 of the product inspection line L ₂ described later. By doing this, the aging process No. of the product inspection line L ₂
The operator in 3 can immediately detect an error in the size setting, and the power supply battery 4 for microcomputer backup
Correspondence can be taken to change the 0 connection hole position to an appropriate position.

On the other hand, the product inspection line L ₂ has, for example, the work coils C ₁ to C ₁ which operate the rated output variable resistance 32.
Rated output power adjustment step No1 of C _3, (automatic measurement by the power meter) No2 set power inspection process corresponding thereto, the aging process No3, retained temperature inspection process No4, finishing step No5, it consists of six steps of the packaging process No6 There is.

Among them, in particular, the aging process No. 3
Has not used a dedicated test mode so far, and generally uses "Owawa menu" that does not require initial water temperature detection among various rice cooking menus. As shown in the chart, at the start of rice cooking, full power (100% = 16/1
6) Hold electricity for a certain time t ₁ (for example, t ₁ = 30 seconds),
Adjusting the rated output of the work coil C ₁ -C ₃ during this time. Therefore, immediately after that, cooking is performed based on the same output. Therefore, for example, neither stable initial water temperature detection after 1 minute OFF nor water temperature correction after summation determination (for that reason, of course, neither). Usually, after the rice is cooked, stepwise control is performed from the low temperature insulation T ₁ ℃ to the high temperature insulation T ₂ ℃, but due to the variation in the insulation temperature inspection (No 4), only the high temperature insulation T ₂ ℃ is required. It is prohibited to keep the temperature low after cooking and rice cooking. In other words, there were some restrictions that were not related to the original rice cooking performance, and the content of the menu itself was not free.

In order to solve this problem, therefore, in the present embodiment, a test mode dedicated to line aging is provided, and a predetermined operation switch (eg rice cooker switch 22a) is set within a certain time (eg 1 second). The aging mode is set only when the operation is performed a predetermined number of times (for example, three times) or more, and a reliable system that can be easily operated on the product inspection line L ₂ but cannot be easily operated by the user is realized. .

In the system, the work coil output power adjusting step No. 1 and the high temperature keeping check are also performed in the aging mode.

As described above, when the dedicated aging mode is provided, it is possible to perform the output control with a high degree of freedom according to the line work without adding restrictions to the original rice-cooking menu such as the above-mentioned "raised menu".

Therefore, the above-mentioned "offer menu" is
Unlike in the past, it is possible to design a completely free output control pattern.

Therefore, the above configuration is also particularly suitable for a model that does not have an "offering menu" or "cooking menu" without an initial water temperature detecting step. Because there is no menu like the above, and you must always detect the initial water temperature, "white rice cooked", "early cooked",
In the case of models that only have menus such as "non-washed rice", "brown rice" that heats over low heat for a long time, and "porridge", it is difficult to use it with aging as long as it does not affect rice cooking performance. Because it is.

Further, in the aging step No. 3, any one of the models (rice cooking capacities 180, 150, 100) based on the above-mentioned state in which the power supply battery 40 for microcomputer backup is connected is used as shown in FIG. Display unit 2
No. 1 is displayed (in FIG. 2, it is shown that the size is “180”). This way,
The operator in the aging process No. 3 can immediately detect an error in the model setting due to the connection of the power supply battery 40 for microcomputer backup, and change the connection hole position of the power supply battery 40 for microcomputer backup to an appropriate position. Can be dealt with.

Now, for example, when this is shown in the form of a flow chart, it becomes as shown in FIG.
By sequentially determining whether 2a has been pressed only once within a predetermined time (for example, 1 second) or a plurality of times (for example, 3 times or more), the operator's instruction on the product inspection line L ₂ is determined. It is determined whether it is the normal rice cooking mode or the aging mode (steps S ₁ and S ₃ ).

If the ON operation of the rice cooking start switch 22a is performed once per second and the former case is judged as YES in step S ₁ , the manufacturing and assembling line L _{1 is}
The accurate current time is displayed by the clock set in the No. 3 step (step S ₂ ).

On the other hand, if at least the ON operation is not in the normal rice cooking mode of a plurality of times, then the number of ON operations of the rice cooking start switch 22a is not less than the predetermined reference number (3 times) within a predetermined time (1 second). determines whether the certain aging mode (step S _3).

As a result, the aging mode is YES.
In the case of the above, the microcomputer control unit 42 is
Assembly line L₁Myco installed and installed in No. 3 process
Position of the connection hole of the power battery 40 for backup
Road pattern) A, B, C
Whether it is 100 size, depending on the voltage value, 1
50 size or 180 size
Whether or not (step S_Four, S₆), The judgment result
Sizes 100, 150, 180 corresponding to
As shown in FIG. 2, the image is displayed on the liquid crystal display unit 21 (step
S_Five, S₇, S ₈).

Therefore, the operator can easily find a matching error between the actual product model and the same display size.

(Other Embodiments) In the above embodiments, the rice cooker capacity of the electric rice cooker, in other words, the model setting based on the size of the inner pot 3 is the power supply battery 40 for the microcomputer backup. This is done by selecting the connection hole positions A, B, and C with respect to the microcomputer board 6B, but recently, for example, the inner pot 3 itself has the same size (rice cooking capacity size) but different types (structure and characteristics). Is adopted, and among them, a common microcomputer board is provided as described above.

For example, stainless steel from the outer layer side to the inner layer side,
Copper, aluminum, general three-layer clad type with far-infrared processed part, stainless steel (SUS304), special stainless steel, stainless steel (SUS304), aluminum (1
145) and a 5-layer clad type in which aluminum alloy (3004) is laminated, the effective heating output and heating characteristics are also different, so that the output setting according to those models is required.

The present invention can deal with such model setting in exactly the same manner as the above case by changing the position of the connection hole of the power supply battery 40 for microcomputer backup.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a configuration of an electric rice cooker body according to an embodiment of the present invention.

FIG. 2 is an enlarged front view of an operation panel portion that is a main part of the electric rice cooker body.

FIG. 3 is a plan view of a microcomputer board portion on the rear surface side of the operation panel, which is a main portion in the main body of the electric rice cooker.

FIG. 4 is a perspective view showing a configuration of a power supply battery for microcomputer backup, which is a main part in the main body of the electric rice cooker and is installed at a predetermined position on the microcomputer board.

FIG. 5 is an electric circuit diagram showing a configuration of a rice cooking capacity switching circuit on the microcomputer board, which is a main part of the electric rice cooker.

FIG. 6 is a line flow diagram showing a configuration of an assembly and inspection line of the electric rice cooker.

7 is a flowchart showing the contents of an aging process on the inspection line side of FIG. 6 of the electric rice cooker.

FIG. 8 is a time chart showing the contents of conventional aging control in the rice cooking and heat retention processes (from the water absorption process to the murmuring process to the heat retention process) of the electric rice cooker.

[Explanation of symbols]

1 is an outer case, 2 is a lid unit, 3 is an inner pot, 4 is an inner case, 6A is a control board, 6B is a microcomputer board, 21 is a liquid crystal display unit, 31 is a liquid crystal display, and 35 is a power supply battery for microcomputer backup. A portion (land portion) 40 is a power supply battery for microcomputer backup, and A, B and C are first to third connection holes (battery leg connection holes) of the power supply battery installation portion 35 for microcomputer backup.

   ─────────────────────────────────────────────────── ─── Continued front page    F-term (reference) 4B055 AA02 BA28 BA29 CA62 CB26                       CB27 CC10 CC17 CD41 DB18                       GD02

Claims (9)

[Claims] 1. An inner pot and heating means for heating the inner pot,
A microcomputer type heating control means for controlling the output amount of the heating means and a power supply battery for supplying power to the microcomputer part of the microcomputer type heating control means are provided, and the power supply battery is mounted on a predetermined circuit board. In the electric rice cooker configured to be mounted on a portion, a plurality of sets of power supply battery terminal connection ports are provided in the power supply battery mounting part, and by selecting any one of them, the power supply battery can be connected to a desired one. An electric rice cooker characterized by being able to switch to the model and set the model. 2. A terminal of a power supply battery has a pair of leg structures, and a plurality of sets of connection ports of a corresponding power supply battery mounting portion have a pair of connection holes into which the pair of legs are inserted. The electric rice cooker according to claim 1, wherein 3. When the power supply battery is connected, different input voltages are input to the microcomputer according to the position of the connection port to which the power supply battery is connected, and the microcomputer has a specified model based on the input voltage value. The electric rice cooker according to claim 1 or 2, characterized in that the control data corresponding to the determination of (1) is set. 4. The electric rice cooker according to claim 3, wherein when the model is determined by the microcomputer, the determined model name is displayed on a predetermined display unit. 5. The electric rice cooker according to claim 4, wherein the predetermined display unit is a display unit for the rice cooker installed on the microcomputer board provided with the power supply battery mounting unit. 6. The electric rice cooker according to claim 4, wherein the determined model name is displayed in a line aging process in a product inspection line. 7. The display of the determined model name is made in correspondence with the connection of the power battery to the power battery mounting portion on the microcomputer board in the product assembly line. Item 4. An electric rice cooker according to item 4 or 5. 8. The electric rice cooker according to claim 1, 2, 3, 4, 5, 6 or 7, wherein the difference in model is the difference in rice cooking capacity. 9. The difference in the model is the difference in the type of the inner pot, 1, 2, 3, 4, 5, 6 or 7.
The listed electric rice cooker.