JPH0824129A - Rice cooker - Google Patents

Abstract

PURPOSE:To cook rice as desired without any effect due to the dispersion of initial boiling temperature through the simple improvement of software control. CONSTITUTION:This rice cooker is equipped with a heating means 64 for cooking rice via the heat generation of an inner pot or the heating thereof, a control means 65 for operating the means 64 as prescribed, and a judgement means 65 for making judgement about a cooking amount on the basis of the state of a temperature rise at an intermediate cooking process. Also, the cooker is equipped with a setting means 65 for establishing a heating condition at a subsequent rice cooking process, depending on the judgement with the means 65, detection means 16 and 65 for detecting initial temperature at a rice cooking process, and a compensation means for correcting the heating condition established with the means 65, depending on temperature detected with the means 16 and 65.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rice cooker, and more specifically, it heats or heats an inner pot by energizing an electromagnetic induction coil or a heater provided at the bottom of a body for housing the inner pot. The present invention relates to a rice cooker that cooks rice.

[0002]

2. Description of the Related Art Recent rice cookers judge the amount of cooked rice from the temperature rising state during the course of cooking rice, and based on this judgment, change the heating conditions for the electromagnetic induction coil and heater in subsequent cooked rice. By doing so, it is possible to achieve predetermined rice cooking.

[0003]

However, the above-described control alone may cause variations in the actual rice-cooking state, and the rice-cooking as set may not be achieved. This is more likely to happen when cooking rice in winter or in cold regions.

As a result of various experiments and researches conducted by the present inventors, it was found that the water temperature in the inner pot at the initial stage of cooking rice was greatly affected.

[0005] Therefore, the present invention is to provide a rice cooker capable of performing the desired rice cooking without the influence of the variation of the initial rice cooking temperature as described above, by improving the simple software control based on the above new knowledge. It is what

[0006]

In order to achieve the above-mentioned object, the rice cooker of the present invention heats the inner pot to cook rice, and controls the heating means to work as set. Means, determining means for determining the amount of cooked rice from the temperature rising state during the course of cooking rice, and according to the determination of this determining means,
Setting means for setting the heating conditions in the subsequent rice cooking, detecting means for detecting the initial temperature of the rice cooking process, and correction means for correcting the heating conditions set by the setting means according to the temperature detected by the detecting means. The first feature is to have.

In order to achieve the above object, the rice cooker of the present invention has a heating means for heating the inner pot to cook rice, a control means for operating the heating means as set, and a rice cooking process. Determination means for determining the amount of cooked rice from the temperature rise state on the way, setting means for setting the heating conditions in the subsequent cooking rice according to the determination of this determination means, and detection means for detecting the initial temperature of the cooking process, The second feature is that the correction means corrects the determination data of the determination means according to the temperature detected by the detection means.

In order to achieve the above-mentioned object, the rice cooker of the present invention has a heating means for heating the inner pot to cook rice, a control means for operating this heating means as set, and a rice cooking process. Determination means for determining the amount of cooked rice from the temperature rise state on the way, setting means for setting the heating conditions in the subsequent cooking rice according to the determination of this determination means, and detection means for detecting the initial temperature of the cooking process, A third feature is that the correction means is provided to correct the temperature rise state when determining the amount of cooked rice according to the temperature detected by the detection means.

[0009]

In the above-mentioned constitution of the first characteristic of the rice cooker of the present invention,
The heating means is controlled by the control means, depending on the preset heating conditions and the heating conditions for the subsequent rice cooking set by the setting means based on the determination result of the amount of rice cooked by the determination means during the rice cooking process. It is operated and cooks rice, but the initial temperature of rice cooking is detected by the detecting means at the beginning of this rice cooking process, and the correcting means corrects the set heating condition based on the rice cooking amount by the setting means based on this initial temperature. So
Rice cooked under the heating conditions according to the amount of rice cooked will be performed under the heating conditions that also take into account the difference in the initial temperature of the rice cooked, and even if there are variations in the initial temperature of the rice cooked, the desired rice cooked without any effect can do.

In the above-mentioned configuration of the second feature of the rice cooker of the present invention, the heating means is controlled by the control means, and the preset heating conditions and the determination of the amount of cooked rice from the determination means in the course of the rice cooking process. The rice is cooked by being operated according to the heating conditions in the subsequent rice cooking set by the setting means based on the result, and the initial temperature of the rice cooking is detected by the detecting means at the beginning of this rice cooking process, and this initial temperature is used as the basis. Since the correction means corrects the judgment data of the judgment means, the amount of cooked rice is judged based on the judgment conditions that take into account the difference in the initial temperature, and the heating conditions of the cooked rice after that are different in the initial temperature of the cooked rice. Even if there is, it is possible to achieve the desired rice cooking by making appropriate settings without being affected by this.

In the above configuration of the third feature of the rice cooker of the present invention, the heating means is controlled by the control means, and the determination means makes a determination based on a preset heating condition and a temperature rising state during the rice cooking process. The rice is cooked according to the heating conditions for subsequent rice cooking set by the setting means based on the amount of cooked rice.The initial temperature of the rice cooking is detected by the detection means at the beginning of this rice cooking process. Since the temperature rise state in the rice cooking amount judgment process is corrected based on the above, the judgment of the rice cooking amount will be performed under the judgment condition that takes in the difference of the initial temperature, and the heating condition of the rice cooking after that will be the initial condition of the rice cooking. Even if there is a variation in temperature, the rice can be cooked as desired by setting it appropriately without affecting this.

[0012]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be described below based on an electric rice cooker for cooking rice and keeping heat as one embodiment of the present invention shown in the drawings.

In the rice cooker of this embodiment, an inner pot 3 is housed in a body 1 as shown in FIG. 1, and a lid 5 pivotally supported by a hinge shaft 4 at the rear of the body 1. In addition, the mouths 1a and 3a of the body 1 and the inner pot 3 can be opened and closed at the same time, and the inner pot 3 is heated to cook rice.

The body 1 is formed in a hollow shape by an inner case 7 and an outer case 8 whose upper ends are connected by a resin shoulder member 10. The inner case 7 is a metal integrally molded product, and the upper case is forcibly fitted and connected to the force fitting portion 10a provided on the inner circumference of the shoulder member 10, while the outer case 8 is force fitting portion. 8a made of metal and joined by 8c
And a bottom portion 8b made of resin, and the upper end of the body portion 8a is formed on the outer periphery of the shoulder member 10 by force fitting.
It is forcibly fitted and connected to b.

A hot platen 13 having a built-in rice cooking heater 11 is provided in the bottom of the inner case 7, and is fixed on the bottom of the inner case 7 by a screw 15. The rice is cooked by receiving and heating the inner pot 3 on the hot platen 13. A temperature sensor 16 for controlling heat generation of the rice cooking heater 11 is attached to the center of the bottom of the inner case 7 in common with the screw 15, and the temperature sensor 16 is provided at the central opening 1 of the heating plate 13.
It is exposed to the upper surface of the heating plate 13 through 3a and comes into contact with the bottom portion of the inner pot 3 received on the heating plate 13 in the inner case 7 to detect the cooking rice temperature and the heat retention temperature.

The lid 5 has a double structure of an outer plate 23 and an inner plate 24 made of resin, and an inner lid 14 made of metal is applied to the opening of the inner plate 24 and attached with screws 30. . A seal packing 25 that seals between the rim of the inner pot 3 and the outer periphery of the inner lid 14 is provided at the portion where the inner lid 14 is applied to the inner plate 24. Is closed.

A steam pipe 26 for letting the steam generated in the inner pot 2 escape to the outside is formed integrally with the inner plate 24 facing the steam pipe 26 at a position slightly rearward from the center of the outer plate 23. The steam escape port 27 is provided, and the steam escape port 27 is connected to the steam pipe 28 by a cylindrical elastic pipe 29 made of rubber, resin, or the like, and the inner pot 3 is set to a predetermined pressure in the middle of the elastic pipe 29. A pressure adjusting valve 31 is integrally formed so as to allow the steam to escape to the outside while keeping it. This pressure regulating valve 31 has a cut in the valve membrane,
Although it is of a type in which the cut portion is pushed and expanded at a predetermined pressure or more to release steam, any type may be specifically adopted.

The lid 5 is a spring 32 that acts around the pivot.
In the closed state, the tip 5a is engaged with the lock lever 34 pivotally supported by the shaft 33 at the front part of the rim of the body 1 in the closed state. It is locked and stable. Lock lever 34 is spring 35
The lid body 5 is automatically opened by the spring 32 when it is pressed against and is disengaged from the tip 5a. However, for this opening operation, the leaf spring 36 provided in the rear part of the lid 5 is
Is brought into sliding contact with a part of the bearing portion 37 to be braked, and the lid body 5 is opened at a slow speed.

A body heater 38 is provided on the outer periphery of the body of the inner case 7.
The lid heater 39 is attached to the upper surface of the inner lid 14, and by these or by the low-capacity energization of these and the rice cooking heater 11, the rice in the inner pot 3 is made substantially uniform around the temperature. Be able to keep warm.

The body case of the inner case 7 is covered with a heat insulating wall 40, and the heat insulating wall 40 is also provided in the lid 5 to prevent heat from escaping to the outside during rice cooking and heat retention. .

The bottom portion 8b has an annular shape, and a control box 42 for accommodating the power supply control board 41 is integrally formed downward in the front half portion of the opening portion, and a lid plate 43 fitted to the opening portion is provided. The control box 42 is covered from below to protect the power supply control board 41 in the control box 42. An upward recess 44 is provided in the rear half of the cover plate 43, and a cord reel 45 for winding and storing the power cord is housed and attached to the recess 44.

The inner case 7 and the outer case 8 at the front of the body 1
An expansion space 51 wider than the other parts is formed between and, and a display unit 52 and a microcomputer control board 53 are provided in this expansion space 51.

The display unit 52 is located directly behind the operation panel 55 formed by attaching the seal sheet 54 to the front upper surface of the shoulder member 10, and the screw 156 is provided on the back side of the shoulder member 10.
The control panel 55 is mounted by means of a key operation, and various lighting indicators such as operation and operation states and the start of rice cooking are displayed on the operation panel 55. The microcomputer control board 53 is a display unit 52.
It is attached by screws 57 to the outer surface of the protective wall 56 that is integrally formed with the resin base body 60 and hangs down in the expansion space 51.

FIG. 2 is a power supply control board 4 of the rice cooker of this embodiment.
1, a display unit 52, an operation panel 55, and a microcomputer control board 53 are shown as an entire control circuit. The AC power supply 61 includes a rice cooking heater 11, a body heater 38, and a lid heater 39, and triacs 62 and 63. The relay 64 is connected as shown in the figure through the relay contact 64a, and the triacs 62 and 63 and the relay 64 are controlled by the microcomputer 65 on the microcomputer control board 53 so that the rice cooking heater 11, the body heater 38 and the lid are connected. The heater 39 can be controlled according to the setting for cooking rice or keeping heat.

The microcomputer 65 has a temperature sensor 16 and a holder 67 which is opposed to a part of a holder 67 of the temperature sensor 16 so as to determine whether or not the temperature sensor 16 is pushed down by the inner pot 3. The inner pot detection switch 68 provided on the portion 69 is also connected as shown in the figure.

Display unit 52 and operation panel 55
As shown in FIG. 2, is a digital display unit 71, a heat retention / cancellation key switch 72, a rice cooking start key switch 73, a rice cooking reservation time setting key switch 74, a rice cooking reservation time setting key switch 75 and a minute setting key switch. 76
And display rice 77 of rice cooking state, display LED of heat retention state
78, a rice cooking reservation status display LED 79, and a buzzer 80 for warning, which are connected to the microcomputer 65.

By the way, in this embodiment, the relay 64 as the heating means is controlled by the control function of the microcomputer 65, and the amount of rice cooked by the preset heating condition and the judgment function of the microcomputer 65 in the course of the rice cooking process. The temperature sensor 16 is operated by the detection function of the microcomputer 65 at the initial stage of this rice cooking process, which is performed according to the heating condition in the subsequent rice cooking set by the setting function of the microcomputer 65 based on the determination result. The initial temperature of cooked rice is detected through, and based on this initial temperature, the correction function of the microcomputer 65 corrects the set heating condition based on the amount of cooked rice by the setting function of the microcomputer 65. As a result, when the rice is cooked under the heating conditions according to the amount of rice cooked, the difference in the initial temperature of the cooked rice It will be also performed in incorporating heating condition, even if there are variations in the initial temperature of cooking can be achieved he wanted cooking without this influence.

Here, the control function of the microcomputer 65 that activates the heating means so as to energize the rice cooking heater 11 for heating the inner pot 3 according to the setting, the determination function of determining the rice cooking amount, and the rice cooking amount according to this determination Each of the setting function for setting the heating condition, the detecting function for detecting the initial temperature of the cooked rice, and the correction function for correcting the set heating condition by the detected initial temperature of the cooked rice are the control means and the determination in the present invention. It corresponds to the means, the setting means, the detecting means, and the correcting means, and it goes without saying that other than the microcomputer 65 may be adopted as these.

The present invention can also be applied to a rice cooker of the type that heats the inner pot 3 by electromagnetic induction to cook rice. In this case, the control means controls the electromagnetic induction coil instead of the rice cooker heater 11. become.

3 and 4 show rice cooked by the control circuit of FIG.
An example of the heat retention operation control is shown, which will be described. When the power is turned on, first, as shown in FIG. 3, after initialization and clearing of various setting states are performed in step # 1, input is performed by various key switches in the standby mode of next step # 2. Then, while performing various input / output processing, it is determined whether or not there is an operation input of the rice cooking switch key in step # 3.

When the rice cooking key switch is operated, the buzzer is activated in step # 4 to notify the start of the rice cooking operation, and in step # 5, the rice cooking state display LED is turned on. Next, after waiting for a predetermined time a seconds to elapse in step # 6, the magnitude relationship between the initial temperature T of the rice cooked by the temperature sensor and the lower reference temperature T1 and the upper reference temperature T2 is determined in steps # 7 and # 8. The correction data .alpha.1 to .alpha.3 corresponding to the determination result of the magnitude relation are set in steps # 9 to # 11.

Thereafter, in step # 12, (a) of FIG.
The water absorption process of heating the inner pan 3 to keep it at a predetermined low temperature to absorb water into the rice is executed for a time corresponding to each setting menu shown in (b) and (c), and in step # 13, Figure 5
The cooking process according to each setting menu shown in (a), (b), and (c) is started. This cooking step may be performed in any manner, but in the present embodiment, FIG.
In order for the rice cooking temperature to follow the ideal cooking curve set according to each setting menu shown in (b) and (c),
While watching the difference between the ideal cooking curve and the actual rice cooking temperature, the rice cooking heater is controlled so that the ideal cooking curve can be obtained.

After starting the cooking process, in step # 14 shown in FIG. 4, the actual cooking temperature is deviated from the ideal cooking curve in the course of raising the cooking temperature from the water absorption temperature to the boiling temperature. The total amount β of rice cooking amounts is determined by the amount and the time until the deviation is eliminated, and in steps # 15 and # 16, the determined rice cooking amount β is determined according to the size.
The correction data set according to the initial temperature of the cooked rice is α1.
.About..alpha.3 is performed, the corresponding heater energizing capacity is selected and set in step # 17 as a result of this correction, and heating based on this is performed thereafter.

Then, the cooking temperature of the cooked rice is 13
When it is confirmed in step # 18 that the temperature has reached 0 ° C., the steaming process is performed in step # 19. When the steaming process is completed, the process proceeds to the heat retaining process of step # 20.

FIGS. 6 and 7 show a second embodiment of the present invention. Like the first embodiment, the internal function of the microcomputer is used to heat the inner pot to cook rice. Means, a control means for operating this heating means as set, a judging means for judging the amount of cooked rice from the temperature rising state during the rice cooking process, and a heating condition for subsequent cooking rice according to the judgment of this judging means. It is provided with a setting means for setting, a detecting means for detecting an initial temperature of a rice cooking process using a temperature sensor, and a correcting means for correcting the judgment data of the judging means according to the detected temperature of the detecting means. is there.

Therefore, the heating means is controlled by the control means, and the subsequent cooking rice set by the setting means on the basis of the preset heating condition and the result of the judgment of the amount of cooked rice from the judging means during the rice cooking process. It is common to the first embodiment in that the rice is cooked under the heating conditions of No. 1 and cooks rice.

However, the initial temperature of the cooked rice is detected by the detection means in the early stage of this rice cooking process, and the correction means corrects the determination data of the determination means based on this initial temperature, whereby the determination of the cooked rice amount is initially performed. Even if the initial heating temperature of the cooked rice varies after that, it will be set appropriately without any influence even if the heating conditions of the cooked rice after that are different. Can be achieved.

FIG. 6 shows a control flow after the summation determination in this embodiment. In step # 114, the summation β of the rice cooking amount is temporarily determined as in the case of the first embodiment. In step # 15, the tentative sum number determination result β is corrected by the correction data α set from the initial temperature of the cooked rice as in the case of the first embodiment, and the proper sum number data θ is calculated.

Thereafter, in steps # 116 and # 117, the rice cooking heater is energized with the energizing capacities W1 to W4 required for subsequent rice cooking in accordance with the size of the total number data θ.
Since the subsequent steps are the same as those in the first embodiment, the description thereof will be omitted. The graph of FIG. 7 shows changes in the rice cooking temperature and control states in this example.

8 to 10 show a third embodiment of the present invention. Like the first embodiment, the internal function of the microcomputer is used to heat the inner pot to cook rice. Means, a control means for operating this heating means as set, a judging means for judging the amount of cooked rice from the temperature rising state during the rice cooking process, and a heating condition for subsequent cooking rice according to the judgment of this judging means. Setting means for setting, detection means for detecting the initial temperature of the rice cooking process using a temperature sensor, and correction means for correcting the heating condition at the time of determining the amount of cooked rice according to the temperature detected by the detection means There is.

Therefore, the heating means is controlled by the control means, and the subsequent heating operations set by the setting means based on the preset heating conditions and the amount of cooked rice judged by the judging means from the temperature rising state during the rice cooking process. It is common to the first and second embodiments in that the rice is cooked under the heating conditions for cooking rice.

However, at the beginning of this rice cooking process, the initial temperature of rice cooking is detected by the detecting means, and the temperature rise state in the rice cooking amount determination process is corrected based on this initial temperature to determine the rice cooking amount. Will be performed under the judgment condition that takes in the difference in the initial temperature, and even if the heating conditions for cooking rice after that vary even if the initial temperature of cooking rice varies, it will be set appropriately without affecting Can cook rice.

FIG. 8 and FIG. 9 show a specific example of such control. In step # 211, the initial temperature Tα of rice cooking is detected, and in step # 212, the water absorption process is performed.
When this is completed, in steps # 213 and 214, the heater is energized with the capacity of W1 to shift to the rice cooking amount determination operation at the startup stage to the rice cooking process, and the heating state is changed to the rice cooking temperature as shown in FIG.
Continue until the temperature T _A shown in 0 is reached. At T _A , as shown in steps # 215 to # 222, turning on the heater with the energization capacity W2 is continued until the stepwise upper limit temperature Tm is reached, and the energization time t during that time is integrated.
While repeating n times, the stepwise upper limit temperature Tm is updated to the next target temperature, and the energization time for each time is set differently from S1, S2, and S3 according to the difference in the initial temperature Tα of the rice cooked. There is.

The state of energization for determining the amount of cooked rice is as shown in FIG. 10. However, the energization cumulative time t when the energization of n times is completed is performed at each time for determining the amount of cooked rice. The temperature rise characteristics due to the energization are reflected, and the difference in the amount of cooked rice is reflected in the temperature rise characteristics. Therefore, it is possible to judge the amount of cooked rice from the temperature rise characteristic based on the energization cumulative time t. The difference in the energization times S1 to S3 set according to the difference in the initial temperature of the cooked rice corrects the temperature rise state according to the difference in the initial temperature of the cooked rice.

Needless to say, the number of times of energization m may be once in order to judge the amount of cooked rice. However, by setting this to a large number of times, it is possible to finely set the rise of the rice cooking temperature for determining the amount of rice cooked, an ideal temperature rising state that is linked to the cooking operation.

When the amount of cooked rice is obtained as the integrated time t, in steps # 231 and # 232 shown in FIG.
The heater is turned on with the corresponding energizing capacities W3 to W6,
When it is confirmed in step # 234 that the temperature has reached 130 ° C., the process proceeds to step # 235, which is the unevenness process, and then proceeds to step # 236, which is the heat retention process.

[0047]

According to the above-mentioned constitution of the first characteristic of the rice cooker of the present invention, the heating means is controlled by the control means, and the amount of rice cooked from the judging means in the course of the rice cooking process is set in advance during the rice cooking process. The rice is cooked by being operated according to the heating conditions in the subsequent rice cooking set by the setting means based on the judgment result of, and the initial temperature of the rice cooking is detected by the detecting means at the beginning of this rice cooking process, and this initial temperature Since the correction means corrects the set heating condition based on the rice cooking amount by the setting means, the rice is cooked under the heating condition according to the rice cooking amount under the heating condition that also includes the difference in the initial temperature of the rice cooking. Even if there is a variation in the initial temperature of the cooked rice, the desired cooked rice can be achieved without this effect.

In the above-mentioned constitution of the second characteristic of the rice cooker of the present invention, the heating means is controlled by the control means, and the preset heating conditions and the amount of cooked rice judged from the judging means in the middle of the rice cooking process. The rice is cooked by being operated according to the heating conditions in the subsequent rice cooking set by the setting means based on the result, and the initial temperature of the rice cooking is detected by the detecting means at the beginning of this rice cooking process, and this initial temperature is used as the basis. Since the correction means corrects the judgment data of the judgment means, the amount of cooked rice is judged based on the judgment conditions that take into account the difference in the initial temperature, and the heating conditions of the cooked rice after that are different in the initial temperature of the cooked rice. Even if there is, it is possible to achieve the desired rice cooking by making appropriate settings without being affected by this.

In the above configuration of the third feature of the rice cooker of the present invention, the heating means is controlled by the control means, and the determination means makes a determination based on the preset heating conditions and the temperature rising state during the rice cooking process. The rice is cooked according to the heating conditions for subsequent rice cooking set by the setting means based on the amount of cooked rice.The initial temperature of the rice cooking is detected by the detection means at the beginning of this rice cooking process. Since the temperature rise state in the rice cooking amount judgment process is corrected based on the above, the judgment of the rice cooking amount will be performed under the judgment condition that takes in the difference of the initial temperature, and the heating condition of the rice cooking after that will be the initial condition of the rice cooking. Even if there is a variation in temperature, the rice can be cooked as desired by setting it appropriately without affecting this.

[Brief description of drawings]

FIG. 1 is a cross-sectional view of a rice cooker showing an embodiment of the present invention.

FIG. 2 is a block diagram of a control circuit of the rice cooker of FIG.

FIG. 3 is a flowchart showing the operation control of the rice cooking operation of the rice cooker of FIG. 1 until the start of cooking.

FIG. 4 is a flowchart showing the operation control from the start of cooking in the rice cooking operation of the rice cooker of FIG. 1 to the heat retention step after rice cooking.

5 is a graph showing changes in rice cooking temperature and timings of various operations according to each setting menu of the rice cooker of FIG. 1. FIG.

FIG. 6 is a flow chart of control after summation determination according to the second embodiment of the present invention.

FIG. 7 is a graph showing changes in rice cooking temperature under the control of FIG.

FIG. 8 is a first half of a control flowchart after summation determination according to a third embodiment of the present invention.

FIG. 9 is the latter half of the flowchart of the control after summation determination according to the third embodiment of the present invention.

FIG. 10 is a graph showing changes in rice cooking temperature under the control of FIGS. 8 and 9.

[Explanation of symbols]

 3 Inner pot 16 Temperature sensor 65 Microcomputer

Claims (3)

[Claims] 1. A heating means for heating an inner pot to cook rice, and a control means for operating the heating means as set.
Judging means for judging the amount of cooked rice from the temperature rising state during the course of cooking rice, setting means for setting heating conditions for subsequent cooking of rice according to the judgment of this judging means, and detecting the initial temperature of the cooking process. A rice cooker comprising a detecting means and a correcting means for correcting the heating condition set by the setting means according to the temperature detected by the detecting means. 2. A heating means for heating the inner pot to cook rice, and a control means for operating the heating means as set.
Judging means for judging the amount of cooked rice from the temperature rise state during the course of cooking rice, setting means for setting heating conditions for subsequent rice cooking according to the judgment of this judging means, and detection for detecting the initial temperature of the rice cooking process A rice cooker comprising: means and a correction means for correcting the determination data of the determination means according to the temperature detected by the detection means. 3. Heating means for heating an inner pot to cook rice, and control means for operating this heating means as set.
Judging means for judging the amount of cooked rice from the temperature rise state during the course of cooking rice, setting means for setting heating conditions for subsequent rice cooking according to the judgment of this judging means, and detection for detecting the initial temperature of the rice cooking process A rice cooker comprising: means and a correction means for correcting the temperature rise state at the time of determining the amount of cooked rice according to the temperature detected by the detection means.