JPH1085125A - Electric rice cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To heat for burnt rice by providing a means for setting the control of heating for burnt rice and a means executing heating for burnt rice by the setting operation in a rice cooking process so as to switch to the control of heating for burnt rice at an optional time. SOLUTION: Rice burning cooking control starts rice burning cooking control by pressing a switch for burning and cooking rice in common twice at the time of starting cooking rice or pressing the start switch twice after starting cooking. At the time of setting rice burning cooking with various operation data, a microcomputer unit 29 judges the existence of a burning setting and at the time of YES, sets a burning memory, displays 'burning' on a liquid crystal display part 20 and advances to a water absorbing process. Then the setting of the burning memory judged again in a boiling process and at the time of YES, whether a cooking completion judging temperature is not less than 150 deg.C which is higher than that of normal cooking by 20 deg.C is judged. When the judging result becomes YES, the completion of cooking is acknowledged to shift to a steaming process and then to a warming process.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an electric rice cooker capable of arbitrarily burning and heating between a rice cooking step and a warming step.

[0002]

2. Description of the Related Art In recent microcomputer-controlled electric rice cookers,
A burn rice cooker key is provided, and when the burn rice cooker key is pressed prior to the start of rice cooking, the cooked rice is cooked in a state where the amount of heating or the heating time is larger than during normal rice cooking and the rice is burnt. A device having a control function has been proposed (for example, Japanese Patent Application No. 8-72590, Japanese Patent Application No. 8-116142).
No.).

[0003]

However, in the presently proposed brown rice control function, the control start condition is that the brown rice key is pressed before the rice cooking process is started. Once the normal rice cooking control is started, after that, it is not possible to switch to the brown rice cooking control function even by pressing the brown rice cooking key. Therefore, in spite of the fact that it was originally intended to cook rice, the user would accidentally start normal rice cooking without pressing the rice cooker key. ,
In the case where the user wants to change to the rice cooking control during the rice cooking process for some reason, there is no corresponding method. On the other hand, in the warming process of keeping the rice cooked by the ordinary rice cooking control, there is a demand that the remaining rice is to be made into, for example, fried rice or to make a rice ball close to a grilled rice ball. Can not respond to Of course, in the heat retaining step, the rice kept warm is generally close to cooked rice.
Since a reheating key for reheating to a temperature of about 0 ° C. to 85 ° C. is provided, by pressing the reheating key, reheating up to the above-mentioned cooking temperature is possible, but further heating is possible. Is impossible, so that the required scorching heating function cannot be realized as it is.

[0004]

Means for Solving the Problems The inventions of claims 1 to 5 of the present invention have been made for the purpose of solving the above problems, respectively, and have the following problem solving means. It is configured.

(1) The invention according to the first aspect of the present invention is provided with a rice heating and heat keeping heating control means, and after the rice cooking step by the rice heating control means is completed, a transition is made to a heat keeping step by the heat keeping heating control means. In an electric rice cooker, a baking heating setting means for setting baking heating control in the course of starting a rice cooking process and ending the warming process, and baking in response to a setting operation of the baking heating setting means. And a scorching heating control means for performing heating control.

[0006] Therefore, even after the rice cooking under the normal rice cooking control is started, if the browning heating control means is operated by some kind of browning heating setting operation means, for example, the cooking temperature in the rice cooking process becomes higher than that of the normal rice cooking. Higher, the spotting temperature in the process is higher than during normal cooking, the spotting time in the process is longer than during normal cooking, and the reheating temperature in the warming process is higher than during normal reheating. In this case, an appropriate scorching heating function can be realized by a method such as making the reheating time in the heat retention step longer than that in normal reheating.

[0007] (2) The invention according to claim 2 is provided with a rice heating and heat keeping heating control means, and after the rice cooking step by the rice heating control means is completed, a transition is made to a heat keeping step by the heat keeping heating control means. In the electric rice cooker, a baking heating setting unit that sets the baking heating control in the rice cooking step, and a baking heating control unit that performs the baking heating control in response to the setting operation of the baking heating setting unit. Provided.

Therefore, even after the rice cooking in the normal rice cooking control is started and before the rice cooking step is completed, if the browning heating control means is operated by any kind of browning heating setting operation means, for example, in the rice cooking step, Appropriate scorching by methods such as raising the cooking temperature higher than normal rice cooking, raising the spotting temperature in the same process as during normal rice cooking, and making the spotting time in the same process longer than during normal cooking. A heating function can be realized.

(3) The invention according to claim 3 is provided with a rice heating and warming / heating control means, and after the rice cooking step by the rice heating control means is completed, the process shifts to a warming step by the warming / heating controlling means. In the electric rice cooker, a scorch heating setting means for setting scorch heating control in the heat retention step, and a scorch heating control means for performing scorch heating control in accordance with the setting operation of the scorch heating setting means. Provided.

[0010] Therefore, even once the rice cooker under the normal rice cooker control is started, and after the rice cooker shifts to the warming step, if the burner heating controller is operated by any burner heating setting operation means, the same operation is performed. From the point of time, for example, the reheating temperature in the heat retention step is higher than that during normal reheating, the reheating time in the same step is longer than that during normal reheating, etc., and an appropriate charring heating function is realized. can do.

(4) The invention according to claim 4 according to the invention according to claim 2, wherein the scorching heating setting means operates during the rice cooking process from the start to the end of the rice cooking process before the rice cooking process starts. The cooked rice cooking key is also used, and the cooked rice heating key is operated between the start and end of the rice cooking process to operate the burned rice heating control means.

[0012] Therefore, even after the rice cooking under the normal rice cooking control is started and before the rice cooking process is completed, the burning rice heating control means can be operated by operating the burning rice cooking key when necessary. If it is operated, from the time of the operation, for example, the cooking temperature in the rice cooking process is higher than that in the normal rice cooking, the spotting temperature in the same step is higher than that in the normal rice cooking, and the spotting time in the same step is the normal rice cooking. An appropriate charring heating function can be realized by a method such as making it longer than usual.

(5) According to the fifth aspect of the present invention, in the third aspect of the present invention, the charring heating setting means operable in the heat retaining step is configured to also serve as a normal reheating key. By operating the reheating key in an operation state different from that during normal reheating (for example, twice for one time) until the end after the transition to the heat retaining step, the burn heating control means is operated. It is configured as follows.

[0014] Therefore, even after the rice cooking under the normal rice cooking control is started, and the reheating key is operated in a different operation state from that during the normal reheating, the charcoal is burned even after the rice cooking process is shifted to the warming process. If the heating control means is operated, a method such as increasing the reheating temperature in the heat retaining step from the time of the operation, for example, higher than the normal reheating time, or making the reheating time longer than the normal reheating time, etc. By
Appropriate charring heating function can be realized.

[0015]

As a result, according to the inventions described in the claims of the present application, the following beneficial effects can be obtained.

(1) Even after the normal rice cooking control is started, the control can be freely switched to the burning control. Therefore, it is possible to easily cope with a case where a rice cook start switch is pressed by mistake in a normal rice cook control where a rice to be burnt is to be cooked or a case where it is desired to switch to a brown rice cook control in the middle of the switch.

(2) After shifting to the heat retaining step,
It is possible to easily cope with a case where the rice being kept warm is to be made into a baked rice state or a baked rice ball, and the cooking use of the remaining rice can be expanded.

[0018]

Embodiment

(Configuration of Electric Rice Cooker Body and Control Circuit Unit Common to Each Embodiment) FIGS. 1 to 3 show configurations of an electric rice cooker body and control circuit unit common to each embodiment of the present invention described later. Is shown.

First, the electric rice cooker is of an electromagnetic induction heating type having two sets of work coils, for example, a first rice cooker bottom side and a second rice cooker side side. Then, the rice cooking function and the heat retaining function can be shared.

That is, as shown in FIG. 1, for example, the electric rice cooker main body is made of an iron-based metal such as stainless steel capable of self-heating by an eddy current induced therein.
(Inner pot) 3 and a synthetic resin bottomed cylindrical inner case (protection frame) 6 formed so that the rice cooker 3 can be set arbitrarily.
A cylindrical outer case 1 serving as an outer housing for holding the inner case 6; and a lid openably and closably provided on an upper part of a container body formed by integrating the outer case 1 and the inner case 6 with each other. And a unit 2.

[0021] bottom wall 6b of the inner case 6, the first consisting of different from and out two coil portions C ₁₁ and C ₁₂ which is Bunmaki concentrically with the radial position as shown in FIG. 1 work a coil C ₁ is provided, the work coil C ₁ of the first to heat the rice vessel bottom 3a side. Further, the side wall portion 6a of the same in the case 6, the second work coil C ₂ single-turn state is provided. The first work coil C ₁ and the second work coil C ₂ are connected in series with each other, for example, as shown in FIG. 3, and have one end thereof (one end of the first work coil C ₁ ). common to the power supply line via a rectifying and smoothing circuit 70, the other end (second work coil C ₂ side end portion) of the trigger signal output terminal of the collector-side terminal and the synchronous trigger circuit 75 of the IGBT (power transistor) 72 It is connected to the. Moreover, whereas the above between the second work coil C ₂ across the relay switch RS of the relay R are connected, the first by its OFF or ON, both the second work coil C ₁ and C ₂ are driven only work coil C ₁ state and the first to be is adapted to the two work coil driving state of the state to be driven is selected control (details will be described later).

Therefore, in this configuration, when the relay switch RS is controlled to the OFF state, the rice cooker 3 generates heat uniformly on both the bottom 3a side and the side 3b side. In the water absorption process in which the rice immersed in water acts as a heat insulating part, the upper side of the rice cooker 3 is evenly heated to enable uniform water absorption performance as a whole. The whole is heated uniformly and cooked efficiently without uneven heating.

On the other hand, when the relay switch RS is controlled to the ON state, the rice cooker 3 efficiently generates heat with low inductance around the bottom 3a side, and cooks rice with high heating output efficiently. Moreover, when the amount of cooked rice is small, scorching on the side is prevented.

A drive control of the first and second work coils C ₁ and C ₂ is provided below the inner case 6 as shown in FIG.
A control circuit board 101 having heat-generating components such as an IGBT 72 and a rectifying / smoothing circuit 70 including a diode bridge for power supply voltage rectification is mounted.

The outer case 1 includes a vertically integrated bottom cover 1a formed of, for example, a synthetic resin plate, and a synthetic resin shoulder member coupled to the upper end of the cover 1a. 1b, and forms a bottomed cylindrical body as a whole in a state where a heat insulating and ventilation space of a predetermined size is formed between the bottom wall 6b of the inner case 6 and the bottom of the cover member 1a. . A fan 60a driven by a fan motor 60 is provided in the heat insulation and ventilation space.
The cooling air is flowed.

On the other hand, a coil stand 102 is provided below the bottom wall 6b of the inner case 6, and a storage space (center space) for the center sensor 7 penetrating vertically (concentrically) is provided in the center of the bottom. A fitting hole 17 is formed in the center sensor storage space 17 so as to be vertically movable.
In addition, a center sensor 7 for detecting the set state of the rice cooker 3 is provided in a state where the rice cooker 3 is constantly urged upward by a coil spring 18. At the top of the cylindrical sensor holder of the center sensor 7, first and second rice cooker temperature detection sensors S ₁ and S ₂ each composed of a thermistor are installed.

The first and second two sets of the rice cooker temperature detection sensors S ₁ and S ₂ include a first cooker cooker temperature sensor S ₁ for controlling the cooker cooker temperature (for controlling a work coil and the like) and a second cooker cooker. rice device temperature sensor S ₂ for 2 has a for abnormal temperature detection.

The center sensor storage space 17 is formed in a sensor holder storage cylinder 19 formed by a rib extending in both the upper and lower directions at the center of the coil base 102, and a sensor cover 18 is formed in a lower opening thereof. Mated.

On the other hand, reference numeral 2 denotes the lid unit. The lid unit 2 is fitted with an outer cover 10 made of a synthetic resin constituting the outer peripheral surface thereof, and is fitted inside the outer peripheral edge of the outer cover 10. An inner cover 11 made of synthetic resin, which forms a concave groove-shaped engaging portion of the lid unit 2 with the rice cooker 3, and an opening of the rice cooker 3 which is superimposed on the back surface of the inner cover 11 and is radially outer periphery. A hollow structure is formed by the heat dissipation plate 13 provided with the poly cover packing 12 at the engagement portion.

The lid unit 2 is rotatably attached to the shoulder member 1b of the outer case 1 via a hinge mechanism 9, and has an open end at a predetermined position of the lid unit 2. An opening / closing lock mechanism 4 that engages to open and close the lid unit 2 is provided.

Reference numeral 8 denotes a shoulder heater, which heats the opening edge 3c of the rice cooker 3 and the peripheral portion of the heat radiating plate 13 of the lid unit 2 to contribute to uniform heating of the whole rice cooker, and to each part thereof. The resulting condensed droplets are quickly evaporated to prevent white bokeh of the rice. Then, the bottom of the shoulder heater 8 is provided with a shoulder heater unit temperature sensor S _3.

In addition, approximately in the center of the lid unit 2,
A vapor discharge device 26 is mounted.

An operation panel 14 is provided in the upper part of the front side of the outer case of the electric rice cooker using a shoulder member 1b in a tapered shape.
As shown in (1), there are provided various operation switches and a display unit for displaying a setting state set by the various switches.

That is, reference numeral 15 denotes a rice cooking menu (for example, white rice, fast-cooked, new rice, sushi, cooked, baked,
Menu switch to specify brown rice, porridge, etc., 16
Is a rice cooker start switch, 16a is a rice cooker lamp, 16b is a burner lamp in the rice cooking process, 20 is a liquid crystal display, 21 is a heat retention switch, 21a is a heat retention lamp,
22 is a timer (reservation switch), 22a is a timer 2
2, a time setting switch 22, a time setting switch 22b of the timer 22, a cancel switch 23, a display time 24 on the liquid crystal display unit 20, a reference numeral 25, "sushi, cooking, rice, brown rice, porridge", "white rice, A menu display section such as “fast-cooking, new rice”; 27 is a display index that is arbitrarily moved and displayed on the liquid crystal display section 20 in accordance with each of the above-described setting menus;
Reference numeral 28 denotes a re-burning switch used in the warming step, 28a is a reheating lamp, and 28b is a burning lamp in the warming step.

In each of the embodiments of the present invention described later,
The burning switch in each step of cooking and keeping the heat is used in combination with the rice cooking start switch 16 and the reheating switch 28 as described above without providing a dedicated burning switch in any case. 1
6. When the reheating switch 28 is pressed once each, the normal rice cooking function, the normal reheating function, and when the reheating switch 28 is pressed twice, the brown rice cooking function and the brown heating function are respectively set, thereby reducing the number of switches.・ The cost is being reduced.

For each of these operations, for example, as shown in the flow charts of FIGS. 4, 11 and 12 described later, a brown rice heating process in the rice cooking process and a brown heating control program in the warming process are employed, respectively. Each heating control sequence of normal rice and burnt rice, and normal reheating and burnt reheating is arbitrarily selected and set.

Next, FIG. 3 shows a configuration of a control circuit section such as a work coil and a shoulder heater centering on a microcomputer control unit 29 for controlling rice cooking and heat keeping of the electric rice cooker body configured as described above.

In the figure, reference numeral 29 denotes a microcomputer control unit (CPU) for controlling rice cooking and heat keeping. The microcomputer control unit 29 is mainly composed of a microcomputer unit and detects, for example, the temperatures of the rice cooker 3 and the shoulder heater 8. Circuit part, work coil drive control circuit part, oscillation circuit part, reset circuit part, shoulder heater drive circuit part, fan motor drive circuit part, power supply circuit part, liquid crystal display part, LED lamp display part, operation switch part, etc. It is configured.

[0039] Then, first, rice 3 and the shoulders first heater 8 parts, the second of each temperature detection circuit 79a, the 79b, for example, the bottom 3a of the rice device 3 according to the first rice device temperature sensor S ₁ Temperature detection value and shoulder heater temperature detection sensor S
The temperature detection values in the vicinity of the shoulder heater 8 by ₃ are input.

The work coil drive control circuit includes, for example, a pulse width modulation circuit 74, a synchronization trigger circuit 7,
5, an IGBT drive circuit 77, an IGBT 72, and a resonance capacitor 71. The microcomputer control unit 29 controls the pulse width modulation circuit 74.
, The total output value of the _first and _second work coils C ₁ and C ₂ or the output value of only the _first work coil C ₁ (wattage P %) And the ON duty ratio (n seconds / 16 seconds) at each of these output values are appropriately changed so that the pattern of the rice cooker heating temperature and the heating time in each step of rice cooking and warming is appropriately considered in consideration of the amount of cooked rice. By variable control, as described later, uniform water absorption and heating of regular or burnt rice without uneven heating, good heat retention of normal rice, appropriate reheating or heat function in warming state etc. Is performed.

The symbol R is used to drive and control both the _first and _second work coils C ₁ and C ₂ at the same time or independently drive only the first work coil C ₁ among them. , And comprises a relay coil RL and a relay switch RS. The relay coil RL is energized and de-energized by the relay drive circuit 78 controlled by the microcomputer control unit 29 to drive the relay switch RS ON and OFF. When the relay switch RS is turned on, the second work coil C on the rice cooker side 3b side
₂ only the first work coil C ₁ is shortcuts only drive (heating control) has been rice vessel bottom 3a side is heated. On the other hand, when the relay switch RS is turned off, the first and second work coils C ₁ and C ₂ are both driven (heating control), and the whole rice cooker is uniformly heated. These driving states are appropriately controlled in accordance with, for example, the amount of cooked rice or the amount of warmed rice in each of the rice cooking process and the warming process.

The symbol D in FIG.
Flywheel diode. Reference numeral 70
Are the first and second inserted between the home AC power supply.
The power supply side rectifying and smoothing circuit incorporates a diode bridge for driving the work coils C ₁ and C ₂ .

On the other hand, reference numeral 8 denotes the above-mentioned shoulder heater, and 60 denotes a fan motor for driving a fan 60a at the inner bottom of the outer case 1 shown in FIG. 1, which is turned on and off by a triac drive circuit 61 via triacs 34 and 31, respectively. OFF
It is designed to be driven.

Reference numeral 62 denotes a step-down transformer, and reference numeral 63 denotes a constant-voltage power supply circuit, which forms a DC power supply circuit of the microcomputer control unit 29.

Further, reference numeral 20 denotes a liquid crystal display unit, BZ denotes a buzzer, and SW denotes various operation switch groups such as the above-described combined use rice cooker start switch, heat retention switch, combined use reheating switch, timer switch, and cancel switch.
Reference numeral 40 denotes an oscillation circuit for forming a clock reference control signal, and reference numeral 64 denotes a reset circuit.

In each of the embodiments of the present invention, in the electric rice cooker of the electromagnetic induction heating type having such a configuration, as described above, for example, each step of the rice cooking step or the heat retaining step from the water absorption step to the draining step. 3 is energized or de-energized in a predetermined control sequence by the microcomputer control unit 29 via the relay drive circuit 78 in accordance with the amount of rice and rice in the circuit of FIG. by OFF control, the first work only coils C _1, or the first, so that the second work coil C _1, C ₂ both the drive and the output control can be appropriately performed.

(Embodiment 1) Next, FIG.
Fig. 4 shows the contents of normal rice cooking and burnt rice cooking control according to Embodiment 1 of the present invention implemented using the electric rice cooker main body and the control circuit having the configuration shown in Fig. 3.

Of the above two types of control, the brown rice control is
By pressing the scorch / combined rice cook start switch 16 twice at the start of rice cooking, from the beginning of the rice cooking process, or from the middle of the normal rice cooker once, press the same burner / cooker rice cook start switch 16 twice. The rice cooker control is started even from the middle of the process, for example, the rice cooker temperature in the boiling step in the rice cooker process from water absorption to spots, especially the rice cooker temperature at the time of completion of cooking is normally cooked. By setting the temperature higher than the determination temperature at the time, the surely burnt rice is executed (see FIG. 5).

Next, the contents of the control will be described in detail with reference to the flowchart of FIG.

[0050] That is, first in step S ₁ to input operation data of the aforementioned various operation switches, then step S ₂
Then, it is determined whether or not the rice cooker start switch 16 has been turned ON twice in succession within a predetermined period of time to determine whether or not the rice is in the browning setting state. step S ₃ in the "browning" in the liquid crystal display unit 20 the bottom of the cooker body proceeds to step S ₄ after having set the browning memory provided in the microcomputer control unit 29 described above displays a (see FIG. 2) Do. Thereafter, the process proceeds water process in step S _5, the case number determination process in step S _6.

[0051] On the other hand, when the normal rice that NO browning serve rice start switch 16 of the judgment of the step S ₂ is not only once ON operation, after the display "normal" proceed to step S ₈ , water absorption process of the step S _9,
It proceeds to case number determining step of S _10.

In each of the water absorption steps of steps S ₅ and S ₉ , the first and second work coils C ₁ and C ₂ are each turned on at a predetermined low output, and the temperature of the rice cooker is raised to the water absorption temperature to obtain a predetermined value. Execute the water absorption process in time.

Thereafter, when the same water absorption time has elapsed and the water absorption process is completed, the process proceeds to each of the number determination processes of steps S ₆ and S ₁₀ , and the outputs of the first and second work coils C ₁ and C ₂ are output. Set the maximum output for each and quickly raise the temperature of the rice cooker to a predetermined temperature t
Performing a slip number determination based on the pressure increasing time between ₁ ~t _2. Thereafter, the process proceeds to steps S ₇ and S ₁₁ , respectively.
When the boiling temperature is reached, the boiling state is maintained until a predetermined cooking completion determination temperature. Then, in the boiling maintaining step, it is determined whether or not the scorching / combined rice cook start switch 16 has been pressed twice continuously within a predetermined time after the start of rice cooking at the stage before the completion of cooking. is set the same browning memory and the step S ₃ in step S _13, for displaying "browning" in step S _14. Thereafter, it is determined whether the browning memory is set respectively proceeds to step S _15. As a result, when the NO browning memory is not set, the routine proceeds from the normal rice to step S _18, the temperature of the rice device 2 Normal (normal) during cooking cook-up completion determination temperature 130 ° C. or higher and while determining whether the became, browning memory proceeds to step S ₁₆ since it is browned rice when the YES that is set up cook during the normal cooking completion determination temperature 130 ° C.
It is determined whether or not the cooking completion determination temperature of 150 ° C. or higher, which is higher by 20 ° C. than that of the above, is obtained.

As a result, if each becomes YES,
Cook up, considered completed, the process proceeds to the next step S ₂₀ Nomura said step, through the further the steaming process proceeds to incubating process of step S _21. On the other hand, when the NO respectively maintains a boiling state in Step S _19, S ₁₇ until the completion judgment temperature raised cook the each.

As described above, in the burnt rice cooking control of the present embodiment, the temperature for determining the completion of cooking in the cooking process when the rice for burning is selected is set to be 20 ° C. higher than the temperature for determining the completion of cooking in the normal rice cooking. doing.

Therefore, the rice heating temperature and the heating time at the end of the cooking process are inevitably considerably higher and longer than those during normal rice cooking, as shown in the characteristics of FIG. You will be able to cook it.

Further, as described above, in the electric rice cooker main body of the present embodiment, the first and second work coils C ₁ ,
C ₂ is divided and arranged in two directions inside and outside of the bottom 3 a of the rice cooker 3, and the outer second work coil C ₂ is disposed in the rice cooker 3.
, The scorch is evenly formed on the whole rice in the rice cooker 3.

Further, in this embodiment, the setting of the burned rice can be set not only at the time of starting the rice cooking but also once after the normal (normal) rice cooking is started. When the user forgets to set the charcoal or when he / she wants to switch to the rice during the cooking, he / she can respond freely.

(Modification 1) As described above, in the burnt rice cooking control of the present embodiment, the cooking completion judgment temperature in the cooking process when the burn rice cooking is selected is determined from the cooking completion judgment temperature in the normal rice cooking. By setting the temperature higher by about 20 ° C., it is possible to cook brown rice.
As shown in the figure, the temperature can be further maintained for a predetermined set time of 5 minutes.

In this way, the heating temperature and the heating time of the rice cooker at the end of the cooking process are inevitably higher and longer than during normal cooking, as shown in FIG. 6, for example. Be able to cook. As a result, it is convenient to cook rice used for, for example, fried rice or grilled rice balls.

(Modification 2) In addition to the above-described method, the above-described method of controlling the burnt rice is not limited to the method described above. For example, as shown in FIG. This is also possible by setting the temperature higher than the predetermined temperature.

In this manner, the rice heating temperature and the drying time in the drying process are necessarily higher and longer than in the normal rice cooking, so that the rice can be cooked in an appropriately scorched state.

(Modification 3) As described above, in the present embodiment of the scorched rice cooking control, the “cooking step” at the time of scorched rice cooking is performed.
Only the temperature at which the cooking was completed was determined to be higher than during normal rice cooking. However, as another method, as shown in FIG. It can also be realized by setting a predetermined temperature higher than the temperature.

In this manner, the heating temperature of the rice cooker in the cooking step, the heating temperature of the rice cooker in the spotting step, and the respective heating times are inevitably higher and longer than those in the ordinary rice cooking. You will be able to cook in a charred state.

As described above, the configuration of the electric rice cooker according to the present embodiment is provided with the rice heating and heat keeping heating control means, and after the rice cooking step by the rice heating control means is completed, the process proceeds to the heat keeping step by the heat keeping heating control means. In the electric rice cooker described above, the scorching heating setting means for setting the scorching heating control in the course of the cooking step as described above, and even in the course of the cooking step corresponding to the setting operation of the scorching heating setting means There is provided a scorch heating control means for setting the scoring memory again and executing the scorch heating control.

Therefore, even after the rice cooking in the normal rice cooking control is started and before the rice cooking step is completed, if the browning heating control means is operated by any of the browning heating setting operation means, for example, in the rice cooking step, By making the cooking completion temperature higher than normal rice cooking, or making the spotting temperature in the process higher than normal rice cooking, or making the spotting time in the process longer than normal rice cooking, Appropriate charring heating function is realized.

Therefore, even after the normal rice cooking control is started once, it is possible to freely switch to the burning heating control. Therefore, it is possible to easily respond to, for example, when you accidentally press the rice cook start switch in the normal rice control and where you want to switch to the burn rice control in the middle of the place where you should burn rice. Become.

In addition, the burning setting means is also used as a rice cook start switch that is set and operated before the start of the rice cooking process. Then, by performing the ON operation twice, the scorching heating control means can be easily operated.

Therefore, the number of switches can be reduced and the cost is reduced.

(Embodiment 2) Next, FIG. 9 to FIG.
It shows the contents of reheating and scorching heating control in the warming step of the electric rice cooker according to Embodiment 2 of the present invention.

First, FIG. 9 shows an overall system flow configuration of the control.

[0072] That is, to complete the "steaming" in cooking step described above, the rice device temperature falls below a predetermined value, enter the incubating process, first turns on the thermal insulation lamp at step S _1.

Next, the first ON state of the above browning combined reheating switch 28 determines in step S _2, the rice device proceeds to step S ₃ when the NO even not being turned ON once It is determined whether or not the temperature has dropped below the target heat retention temperature of 72 ° C. Then, based on the determination result, yet when NO that does not drop to the target retained temperature 72 ° C., or is temporarily decreased is higher than the temperature 72 ° C. again, the above process proceeds to step S ₄ First work coil C ₁
While on whether or OFF again kept to OFF, when the YES which has fallen to the target retained temperature 72 ° C. or less, and in the first ON the work coil C ₁ proceeds to step S _5, the target retained temperature Feedback control to 72 ° C. is performed. Then, by repeating these, normal heat retention control is executed.

On the other hand, as described above, the heating process is started.
When a possible reheating switch 28 browned combined in step S ₂ in the incubating process is pressed at least once is determined, ON once above the buzzer BZ proceeds to First Step S ₆ unlike the to conjunction informs that the switch 28 has been turned oN, then determine the course of 10 seconds from the buzzer oN at step S _7, further oN of the switch 28 again until the lapse of the 10 seconds operation whether or not made (i.e., whether or not pressed twice successively in 10 seconds) determined in step S ₉ together with the step S _7.

[0075] As a result, when the YES the reheating switch 28 during the period until 10 seconds above only step S ₇ only was not pressed once, as conventional reheating proceeds to step S ₈ Mode reheating (see FIG. 10 described later)
Control: The temperature at which the rice was cooked in normal rice 11
While performing a heating) up to 0 ℃ about, when YES is even step S ₉ pressed twice, firstly performs display of "browning" in the liquid crystal display unit 20 in step S _10, followed by step S after performing buzzer notification indicating entering the browning heating at _11, the process proceeds to step S _12, reheating the rice in the control .... incubation 11 for browning heating control (described later until the browning state Control).

Next, the above "normal reheating" (step S
₈₎ as well as the content of "browning heating" (step S _12), FIG. 10, respectively, will be described in detail with reference to the flowchart of FIG.

[0077] First, FIG. 10 shows the contents of the "normal heating" control in step S ₈ of FIG 9.

That is, when the normal reheating mode is entered as described above, it is first determined that the mode is the same in step S.
The cooking lamps described above with turning on flashing state ₁ displays by turning on the re-heating lamp at step S _2, further said relay switch RS in step S ₃
Is turned off to enable driving of the _first work coil C1.

[0079] Thereafter, the rice device temperature is equal to or less than reheating target temperature 110 ° C. For example, in step S _4, when the result is YES, firstly the work output of the coil C ₁ in step S ₅ ( wattage) to the value P ₅ (50-60%) which is suitable to maintain the same temperature 110 ° C., also step S ₆
To set the duty value of the first work coil C ₁ to 6/1.
6 to drive the first work coil C ₁ to heat the rice cooker 3. On the other hand, when the rice device temperature of NO in step S ₄ is higher than the reheat target temperature 110 ° C. turns OFF the first work coil C ₁ at step S _7.

[0080] Then, further proceeds to step S _8, now determines whether the temperature of the shoulder heater 8 installed portion is 110 ° C. or less. As a result, when the result is YES, while evaporating the condensed droplets of the heat radiation plate 13 and the rice unit opening portion in the ON shoulder heater 8 at a duty value of 16/16 (full power) proceeds to step S _9, when NO, the OFF the shoulder heater 8 proceeds to step S _10.

[0081] Then, the course of setting reheating time according to the thermal insulation rice weight and timer count in the step S _11, and determines the lapse of the remaining time in step S _12.

[0082] As a result, at the YES has elapsed reheating time that is the set, first, the completion of the reheated buzzer notification in step S _13, after each OFF the cooking or re-heating lamp at step S ₁₄ Step S in FIG. 9 described above
Returning to step ₂ , the heat retention control sequence of FIG. 9 is executed again.

[0083] Next Fig. 11 shows the contents of the "browning heating" control in step S ₁₂ of FIG 9.

That is, upon entering the charring heating mode as described above, it is first determined that the mode is the same in step S _1.
The relay switch R in Displays by turning on the browning heating lamp at step S ₂ with lighting the cooking lamp described above in flashing, further in step S ₃
To allow the first drive of the work coil C ₁ to the S to OFF.

[0085] Thereafter, whether a 10 ° C. higher browning target temperature 120 ° C. or less than the rice device temperature, for example above reheating target temperature 110 ° C. determined in step S _4,
If YES, first in step S ₅ in the first work output of the coil C ₁ value P ₃ suitable to maintain (wattage) at the same temperature 120 ° C. (70-75 [%), also step S ₆ , the duty value of the first work coil C ₁ is set to 6 /
It is set to 16 to drive the same first work coil C _1, heating the rice device 3. On the other hand, when the rice device temperature of NO in step S ₄ is higher than the browning target temperature 120 ° C. is, OFF the work coil C ₁ of the first at step S ₇
To

[0086] Then, further proceeds to step S _8, now determines whether the temperature of the shoulder heater 8 installed portion is 110 ° C. or less. As a result, when the result is YES, while evaporating the condensed droplets of the heat radiation plate 13 and the rice unit opening portion in the ON shoulder heater 8 at a duty value of 16/16 (full power) proceeds to step S _9, when NO, the OFF the shoulder heater 8 proceeds to step S _10.

[0087] Then, the course of setting browning heating time according to the thermal insulation rice weight and timer count in the step S _11,
Determining the course of the remaining time in step S _12.

[0088] As a result, at the YES and the set browning heating time has elapsed, first buzzer informing the completion of the browning heating in step S _13, the rice-in step S ₁₄
Turning off each of the charring heating lamps,
Again return to step S ₂ to perform heat keeping control sequence of FIG.

As described above, the configuration of the electric rice cooker according to the present embodiment is provided with the means for controlling the rice heating and the heat retention / heating.
After the rice cooking process by the rice heating control means is completed, the electric rice cooker is configured to shift to a heat retaining step by the heat retaining heating control means. There is provided a burning heating control means for performing the burning heating control in response to the setting operation of the heating setting means.

Therefore, once the rice cooker under the normal rice cooker control is started, and after the rice cooker shifts to the warming step, if the burner heating control means is operated by the burner heating setting operating means, the same time as the operating time is obtained. Thus, for example, by setting the reheating temperature in the heat retention step higher than that during normal reheating, an appropriate scorching heating function can be realized.

Further, as described above, the scorching heating setting means is also used as a normal reheating key. Are operated in different operating states (two times for one time) to activate the burning heating control means.

[0092] Therefore, even after the rice cooker in the normal rice cooker control is started once and the process shifts to the warming step after the rice cooker step, the charcoal heating control means can be operated by operating the reheating key twice, for example. If this is the case, an appropriate scorching heating function can be easily realized.

As a result, it is possible to easily cope with the case where the rice being kept warm is desired to be in a baked rice state or a baked rice ball after shifting to the warming step, and the use of the remaining boiled rice can be expanded.

(Embodiment 3) Next, FIG. 12 shows the content of the scorching heating control in the warming step of the electric rice cooker according to Embodiment 3 of the present invention.

This embodiment is a modification of the content of the scorching heating control of FIG. 11 in the second embodiment, and the same is achieved by setting the work coil output higher than the rice cooker heating temperature. Try to achieve your goals.

That is, when the normal reheating mode is entered as described above, it is first determined that the mode is the same in step S.
₁ is displayed by turning on the browning heating lamp at step S ₂ with lighting the cooking lamp above flashing state, the first still in the OFF the relay switch RS in step S ₃ of the work coil C ₁ Driving is enabled.

[0097] Then, it is determined whether or not more than the rice device temperature, for example, brown target temperature 110 ° C. In Step S _4, when the result is YES, first in step S ₅ the first work coil C ₁ Output value (wattage) of P ₃ (70-75
In%), also set larger the same first duty value of the work coil C ₁ to 8/16 to drive the same first work coil C ₁ in step S _6, to heat the rice device 3. On the other hand, when the rice device temperature of NO in step S ₄ is higher than the browning target temperature 110 ° C., the first at step S ₇
To OFF work coil C ₁ of.

[0098] Then, further proceeds to step S _8, now determines whether the temperature of the shoulder heater 8 installed portion is 110 ° C. or less. As a result, when the result is YES, while evaporating the condensed droplets of the heat radiation plate 13 and the rice unit opening portion in the ON shoulder heater 8 at a duty value of 16/16 (full power) proceeds to step S _9, when NO, the OFF the shoulder heater 8 proceeds to step S _10.

[0099] Then, the course of setting browning heating time according to the thermal insulation rice weight and timer count in the step S _11,
Determining the course of the remaining time in step S _12.

[0100] As a result, at the YES and the set browning heating time has elapsed, first buzzer informing the completion of the browning heating in step S _13, the rice-in step S ₁₄
Turning off each of the charring heating lamps,
Again return to step S ₂ to perform heat keeping control sequence of FIG.

As described above, even if the heating temperature of the rice cooker itself is the same as the ordinary reheating, if the output of the work coil itself at that time is increased, substantially the same operation as that of the second embodiment can be realized.

[Brief description of the drawings]

FIG. 1 is a diagram showing a configuration of a main body of an electric rice cooker according to each embodiment of the present invention.

FIG. 2 is a diagram showing a configuration of an operation panel unit of the electric rice cooker main unit.

FIG. 3 is a diagram showing a configuration of a control circuit of the electric rice cooker main body.

FIG. 4 is a flowchart showing the contents of control in the rice cooking process of the electric rice cooker according to Embodiment 1 of the present invention.

FIG. 5 is a rice cooking characteristic diagram of the same control.

FIG. 6 is a rice cooking characteristic diagram of a first modified example of the control.

FIG. 7 is a rice cooking characteristic diagram of a second modified example of the control.

FIG. 8 is a rice cooking characteristic diagram of a third modified example of the control.

FIG. 9 is a flowchart showing the contents of control in a warming step of the electric rice cooker according to Embodiment 2 of the present invention.

FIG. 10 is a flowchart showing the contents of normal reheating control in the control of the heat retaining step.

FIG. 11 is a flowchart showing the content of burn-in heating control in the control of the heat retaining step.

FIG. 12 is a flowchart showing the content of burn-in heating control in a warming step of the electric rice cooker according to Embodiment 3 of the present invention.

[Explanation of symbols]

1 is an outer case, 2 is a lid unit, 3 is a rice cooker, 6 is an inner case, 14 is an operation panel unit, 16 is a rice cooker start switch for double use, 20 is a liquid crystal display unit, 28 is a reheat switch for double use, 29 is a microcomputer control unit, C ₁ and C ₂ are first and second work coils, RS is a relay switch, S
Reference numeral ₁ denotes a first rice cooker temperature detection sensor.

Claims (5)

[Claims] Claims: 1. An electric rice cooker comprising a rice heating and heat-retaining heating control means, wherein after the rice cooking step by the rice-heating heating control means is completed, the electric rice cooker shifts to a heat-retaining step by the heat-retention heating control means. A baking heating setting means for setting the baking heating control on the way to the end of the post-heating keeping step; and a baking heating control means for performing the baking heating control in accordance with the setting operation of the baking heating setting means. An electric rice cooker comprising: 2. An electric rice cooker comprising a rice heating and heating and heating control means, wherein after the rice cooking step by the rice heating control means is completed, the process shifts to a heating step by the heating and heating control means. An electric rice cooker, comprising: a scorching heating setting means for setting heating control; and a scorching heating control means for executing the scorching heating control in accordance with the setting operation of the scorching heating setting means. 3. An electric rice cooker comprising a rice heating and heating and heating control means, wherein after the rice cooking step by the rice heating control means is completed, the process proceeds to a heating step by the heating and heating control means. An electric rice cooker, comprising: a scorching heating setting means for setting heating control; and a scorching heating control means for executing the scorching heating control in accordance with the setting operation of the scorching heating setting means. 4. The scorching heating setting means also serves as a scorching rice cooking key for setting scorching heating control before the start of the cooking step,
3. The electric rice cooker according to claim 2, wherein the rice cooker key is operated by operating the rice cooker key from the start of the normal rice cooking process to the end thereof. . 5. The burning heating setting means also serves as a reheating key for performing normal reheating in the heat retaining step, and operates the reheating key in an operation state different from that during normal reheating in the heat retaining step. 4. The method according to claim 3, wherein the heating control means is actuated.
An electric rice cooker as described.