JP3266543B2 - Rice cooker - Google Patents

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 particularly to a rice cooker capable of determining the amount of rice cooked in a pot.

[0002]

2. Description of the Related Art There is a rice cooker as a rice cooker, and rice cookers of different amounts, such as one, two, and three, are cooked by the rice cooker. In order to cook rice deliciously, rice cooking control should be changed according to the amount of rice cooked. Therefore, the amount of cooked rice is also determined in a conventional rice cooker. That is, the bottom of the kettle is heated with rice cooking power, the temperature is measured with a temperature sensor provided on the pot lid, and the amount of cooked rice is determined based on the difference in the measured temperature rise gradient.

[0003]

However, in the conventional determination of the amount of cooked rice, the amount of cooked rice is determined by the value of the sensor of the lid of the pot, which is heated by the cooking power and has a lower temperature than the bottom of the pot, which has a higher temperature. Therefore, the temperature distribution in the pot is different, so that it cannot be said that the temperature measurement takes into account the heat capacity of rice and the heat capacity of water, and there is a problem that accuracy is insufficient.

Therefore, the first aspect of the present invention is to cook rice cooker in which the temperature distribution in the pot is made uniform, and the amount of rice cooked can be determined based on the temperature of the pot corresponding to the temperature in the pot where the influence of the amount of rice cooked appears. It is an object to provide a vessel.

[0005] A second object of the present invention is to provide a rice cooker capable of easily controlling a thermal power in addition to the object of the first aspect of the present invention. The invention of claim 3 is
Another object of the present invention is to provide a rice cooker capable of determining the amount of cooked rice by using a predetermined calculation. A fourth object of the present invention is to provide, in addition to the objects of the first, second or third aspect, a rice cooker capable of determining the amount of cooked rice at a temperature of the pot that is close to the temperature in the pot.

[0006]

[0007]

[0008]

According to the first aspect of the present invention, there is provided a heating means, a thermal power control means, a measuring means, and a determining means. The heating means heats the kettle. The thermal power control means
After the heating power of the heating means is controlled to rice cooking power in order to give a predetermined amount of heat to the cooking pot, the heating power of the heating means is controlled to average the heating power of the heating means in order to average the temperature in the cooking pot. here,
It is preferable that the thermal power to be averaged is a thermal power in a range necessary for rice cooking that does not hinder the eating of cooked rice, and is, for example, a thermal power of half of the rice cooking power. The measuring means measures the temperature of the kettle corresponding to the averaged temperature in the kettle. The determining means determines the amount of cooked rice based on the temperature of the corresponding kettle measured by the measuring means.

According to the present invention, the temperature in the pot is averaged, and the temperature distribution in the pot is made uniform. Is measured as the temperature of the rice, and the accurate amount of rice cooked with the influence of the amount of rice cooked can be determined. According to a second aspect of the present invention, the time of the heating power of the heating means of the first aspect is the time of the rice cooking power, and the time of the heating power for averaging the heating power of the heating means is longer than the first time. The second time, and the thermal power to be averaged, is characterized in that the thermal power supplied to the kettle in the first time is equal to the thermal power supplied to the kettle in the second time.

According to this invention, in addition to the effect similar to that of the first aspect of the present invention, the heat quantity at the first time and the heat quantity at the second time are averaged under the condition that the heat quantity is equal. Can be set, and the heating power is determined under the conditions of time and calorie, so the cooking power,
It is possible to perform the thermal power control in which the thermal power, the first time, and the second time are determined so as to be averaged.

According to a third aspect of the present invention, the temperature of the corresponding pot measured by the measuring means of the first or second aspect is lower than the boiling temperature, and the determining means subtracts the temperature of the corresponding pot from the boiling temperature. It is characterized in that the amount of cooked rice is determined based on a value obtained by dividing the difference by a predetermined time. According to such an invention, it is possible to determine the amount of cooked rice using a predetermined calculation.

A fourth aspect of the present invention is characterized in that the heating means of the first, second or third aspect heats the bottom of the kettle, and the measuring means includes a temperature sensor for measuring the temperature of the edge of the kettle. According to such an invention, even if the temperature of the pot is accurate, the temperature in the pot is accurately averaged by using a temperature sensor capable of measuring the averaged temperature in the pot and the temperature of the corresponding pot as a close value. By measuring the temperature close to the temperature of the cooked rice, it is possible to accurately determine the amount of cooked rice.

[0013]

[0014]

According to the first aspect of the present invention, the temperature of the pot corresponding to the averaged temperature in the pot obtained by the uniform temperature distribution in the pot is measured, and the temperature is measured based on the measured temperature. A rice cooker for accurately determining the amount of cooked rice can be obtained. Therefore, when rice cooking control is performed in accordance with the amount of cooked rice, it is less likely to perform rice cooking control in accordance with the erroneous amount of cooked rice, and a rice cooker that can cook delicious rice can be provided.

According to a second aspect of the present invention, in addition to the effect of the first aspect of the present invention, the second time which is the time of the heating power which is averaged with the amount of heat given in the first time which is the time of the rice cooking power. The first time, the second time, and the amount of heat to be averaged are selected and the amount of cooked rice is determined so that the amount of heat provided to the cooker becomes equal to the amount of heat given to the cooker. Unique thermal power control can be performed by the elements, and a rice cooker with simple control can be provided.

According to the third aspect of the present invention, since the amount of cooked rice is determined based on a value obtained by performing a predetermined calculation, the amount of cooked rice can be determined based on an objective reference of a numerical value. Then, rice cooking control can be performed in accordance with the amount of rice cooked determined based on the obtained value. According to the invention of claim 4, since the temperature near the averaged temperature in the kettle can be measured by using the temperature sensor for measuring the temperature of the edge of the kettle, the influence of the size of the rice cooked in the kettle appears. In this case, the averaged temperature of the rice can be used as it is, and the rice cooking amount can be determined based on the theoretical concept.

[0017]

FIG. 1 is a sectional view of a gas rice cooker as a rice cooker according to an embodiment of the present invention, and FIG.
FIG. 2 is a sectional view taken along line XX of FIG. 1. Referring to FIGS. 1 and 2, main body case 2 has a rectangular parallelepiped shape as a whole, and incorporates combustible chamber 3 having inner body 30 for accommodating rice cooker 20, valve device 11 and control device CP. And a control room 1. And the bottom 3 of the inner trunk 30
1, the burner top 41 of the burner 4 is exposed and the inner body 30 is exposed.
The flange 21 at the upper end of the rice cooker 20 is supported by the peripheral edge of the open portion above. This rice cooker 20 has an inner lid 24.
An outer lid 23 is provided on the outside of the rice cooker 20 and the inner shell 30 so as to be openable and closable.

The main part of the burner 4 is a bottom part 31 of the heating chamber 3.
The burner top 41 is housed in the space below the bottom 31.
Project from the center opening of the lower part of the inner trunk 30. Burner 4
Gas is supplied through a valve device 11 in the control chamber 1, and combustion air is similarly introduced into the control chamber 1, and the space below the bottom 31 of the heating chamber 3 is connected through the communication hole 13. Supplied to

A cord heater 43 is provided on the outer periphery of a cylindrical portion 40 connecting the burner top 41 and the main body below the bottom portion 31 so as to be attached to a donut-shaped support plate 42. The disposition position of the cord heater 43 is set in a donut shape, the inner end thereof substantially coincides with the central opening of the bottom 31, and the outer peripheral end is set outside the body of the inner body 30. .

The burner 4 is a Bunsen burner, which burns with primary air and secondary air supplied from an annular space on the outer periphery of the cylindrical portion 40, and the combustion exhaust gas is converted into an inner body 30 as shown in FIGS. The gap 22 between the rice cooker 20 and the rice cooker 20 rises, and is discharged from below the flange portion 21 to the outside. In this example, the outer lid 23 that is provided so as to cover the upper region of the flange portion 21 and that is located above the heating chamber 3 is supported by the side wall of the main body case 2. The outer lid 23 can be opened and closed from the operation panel 10 provided above the control room 1, and is locked by a detachable locking mechanism R provided on the operation panel 10 in a closed state. I have. An exhaust port 33 is formed at the upper end of the inner trunk 30 at a position corresponding to the fulcrum for opening and closing the outer lid 23 and the side wall excluding the installation part of the lock mechanism R,
The outside of the exhaust port 33 faces a common inner trunk opening 300 provided at the upper end of the main body case 2.

FIG. 3 is an enlarged view showing the periphery of the detection sensor of FIG. 1, and FIG. 4 is an enlarged view of the vicinity of the detection sensor of FIG. As a detection sensor S for detecting the temperature of the rice cooker 20, a thermocouple-type thermosensitive element is employed. As shown in FIG. 3, the detection sensor S is provided on an upper end flange 35 serving as an upper end surface of the main body case 2 on the side of the heating chamber 3, and its heat-sensitive portion is exposed on the upper end surface portion. Therefore, when the rice cooker 20 is accommodated in the inner trunk 30 and the flange portion 21 is supported by the upper end flange portion 35, the flange portion 21 comes into contact with the heat-sensitive portion of the detection sensor S. As a result, the temperature of the flange portion 21 can be detected.

In this example, since it is built in the upper end flange 35 above the exhaust port 33, it is designed so that there is no fear that the combustion exhaust gas that has passed through the gap 22 will heat the detection sensor S. The detection sensor S is, in detail,
As shown in FIG. 4, it is attached to the upper end flange portion 35 of the inner body 30 in a state of being biased by a spring so as to protrude upward. As a result, the flange portion 21 of the rice cooker 20
Is supported by the upper end flange portion 35, the upper end of the detection sensor S is reliably pressed against the lower surface of the flange portion 21 by the urging force of the spring.

FIG. 5 is a schematic block diagram showing an internal configuration necessary for determining the amount of cooked rice in the gas cooker of FIG.
As shown in FIG. 5, the gas amount of the burner 4 as a heating means is adjusted by a valve device 11 which receives a control signal from the control device CP, and the valve device 11 is an example of a thermal power control means. Then, the detection sensor S as a measuring unit measures the temperature of the edge of the rice cooker 20 heated by the burner 4, and sends a signal representing the measurement result to the determination unit 50 of the control device CP. The determination unit 50 determines the amount of rice cooked in the rice cooker 20 based on the measurement value sent from the detection sensor S. Specifically, the determination unit 50 as a determination unit performs a predetermined calculation using the data sent from the detection sensor S and the data stored in the storage unit 53, and calculates the amount of rice cooked by the value of the calculation. Determine. After determining the amount of cooked rice, the determination unit 50 outputs a control signal to the valve device 11 to control the valve device 11 according to the amount of cooked rice. As will be described later in the flowchart, the valve device 11 is also controlled by a control signal sent from the timer 55 of the control device CP, and averages the temperature in the rice cooker 20 heated by the burner 4. Can control thermal power.

FIG. 6 is a first flowchart showing the control of the gas cooker of FIG. 1, FIG. 7 is a second flowchart, and FIG. 8 is a third flowchart. Referring to FIG.
When rice cooking is started, steps (represented by ST in the drawing)
At 101, forced weak combustion is started. The forced weak combustion is continued for one minute as shown in step 102. This one minute is measured by the timer 55 of the control device CP, and is executed when a control signal is input to the valve device 11. Then, as shown in step 103, the fire is extinguished after a lapse of one minute.

The following elapsed time is measured by the timer 55 as in step 102 unless otherwise specified. Next, the extinguishing state is continued for one minute as shown in step 104, and the setting of temperature controlled combustion is performed as shown in step 105. The temperature control setting here is 45 ° C., and the combustion that maintains 45 ° C. is performed in step 10.
Continue for 2 minutes as shown in 6. After a lapse of two minutes, a step for discriminating the amount of cooked rice is started in step 107 and subsequent steps. However, if the rice is cooked after washing, step 10
Go to step 7, but if you want to cook immediately after washing rice, step 106
After that, the temperature controlled combustion at 50 ° C. is continued for 12 minutes, and thereafter, the routine proceeds to step 107.

Step 107 is a step of forced strong combustion, which is continued for one minute as shown in step 108, and a predetermined amount of heat is given to the rice cooker 20. Here, the heating power is a rice cooking power, and since it is a large heating power, the temperature of the bottom of the rice cooker 20 is considerably higher than the temperature of the lid of the rice cooker 20. That is, the inside of the rice cooker 20 has a non-uniform temperature distribution with a higher temperature nearer the bottom. In order to make the non-uniform temperature distribution uniform and obtain an averaged temperature in the rice cooker 20, forced weak combustion is started in step 109.
The forced weak combustion is continued for 2 minutes as shown in step 110. The heating power of the forced weak combustion is such that the temperature in the rice cooker 20 is averaged, and half the heating power of the rice cooking power that is the heating power of the forced strong combustion is the heating power of the forced weak combustion. As a result, the amount of heat given in step 108 and step 1
The control of the burner 4 is performed by the valve device 11 so that the amount of heat given by 10 becomes equal.

By performing such thermal power control, although the temperature of the upper part of the rice cooker 20 and the temperature of the bottom of the rice cooker 20 differ greatly at the end of step 108, the heating is suppressed in step 109 and the bottom is reduced. , The heat given in step 108 is particularly transmitted upward, and the temperature distribution in the rice cooker 20 is uniform at the end of step 110. Therefore, the temperature measured by the detection sensor S at the end of Step 110 is
Rice cooker 20 corresponding to the averaged temperature in rice cooker 20
Temperature. By performing such averaging, the temperature averaged by the heat capacity according to the amount of rice and the heat capacity according to the amount of water is different, and the amount of cooked rice is determined.

Then, the following step 111 is performed as follows.
Then, based on the measured temperature, a calculation for actually determining the amount of cooked rice is performed. First, data indicating the boiling temperature of 100 ° C. is stored in the storage unit 53 of FIG. Second,
Data indicating 8 minutes, which is a target time from when 2 minutes have passed in step 106 until the temperature reaches 100 ° C., is stored. Third, step 108 and step 11
Data indicating three minutes, which is the elapsed time required for 0, is stored. Based on the stored data, the calculation of the equation (1) is performed. If the obtained value of the increase coefficient (KS) is 77 or more, the amount of cooked rice is small and small. In the following cases, the amount of cooked rice is determined to be medium and medium.

Increase coefficient (KS) = [{100 ° C. (calculated target temperature) −measured temperature of detection sensor after 3 minutes} / [{8 minutes (target time) −3 minutes (elapsed time)} × 60 / 20 °]] × 100 (1) Note that the effect of the same amount of heat applied, with one minute of strong combustion and two minutes of weak combustion, will be further described. The current rice cooker has a pot size of 1 liter,
There are three types, 1.4 liters and 2 liters, and the gas consumption differs depending on the size of the kettle. Therefore, theoretically, if a large amount of rice is cooked using a common determination value due to the difference in heat capacity of the kettle when strongly burning with a constant high heating power, instead of the common equation (1), each rice cooker should be used. An appropriate equation should be determined, and if the common equation (1) is used, a determination value of the amount of cooked rice should be determined for each rice cooker.

However, in the actual product, a 1 liter kettle was 1600 Kcal, and a 1.4 liter kettle was 1800 Kc.
al and 2 liter kettles are assumed to be 2000 Kcal, and no calculation formulas are obtained for each.
In addition, the amount of cooked rice is determined using a common determination value. This is because, as a result of the experiment, a value slightly larger than the value of the gas consumption of the kettle having the smallest gas consumption is adopted as the target gas consumption for obtaining the common calculation formula.
Formula (1) is obtained by adopting 00Kcal, and if the strong combustion is performed for one minute and the weak combustion is performed for two minutes, and the thermal power is controlled so that the applied heat amounts are equal, the rise calculated by the formula (1) is performed. This is because the coefficient (KS) indicates that the amount of cooked rice can be determined with a common value.

Incidentally, the relationship between the rice cooking power time in step 107 and the heating power time to be averaged in step 109 is as follows.
The latter need not always be long. If the averaging can be performed, for example, the heating time in step 110 may be one minute. In addition, the amount of heat given in step 108 and the amount of heat given in step 110 need not necessarily be equal, as long as averaging is possible.

It is preferable that the heating power to be averaged is within a range necessary for cooking rice which does not hinder eating the cooked rice.

Further, from the viewpoint of calculation, the value stored in the storage unit 53 does not need to be 100 ° C. (calculated target temperature) 8 minutes (target time) and 3 minutes (elapsed time), for example, (1) (8 minutes target time) -3 minutes (elapsed time) in the formula is 3 minutes (elapsed time), and the measured temperature of the temperature sensor after 3 minutes is 100 ° C. (calculated target temperature) -3 minutes. It may be -45 ° C.

By the way, in the equation (1),
60/20, which means that sampling is performed every 20 seconds.
Is not always measured, but is used as a control signal based on sampled data. Therefore, the frequency of sampling is not essential. Next, after step 112, rice cooking control according to the rice cooking amount determined in step 111 is performed. That is, large, medium, and small branches of the amount of cooked rice are performed in step 112. If the amount of cooked rice is small, weak combustion is started in step 113, and if it is medium, forced strong combustion is started in step 114. If it is large, strong combustion is started in step 117. In the case of weak combustion in step 113, and in the case of strong combustion in step 117, as shown in step 118 of FIG. 7, weak combustion is performed until the detection temperature (T1) of the detection sensor S reaches 100 ° C.
Strong combustion is continued. On the other hand, in the case of the forced strong combustion in step 114, after continuing for 2 minutes as shown in step 115, the process is switched to weak combustion in step 116. After switching to weak combustion in step 116, similarly to step 113, weak combustion is continued until the detected temperature (T1) of the detection sensor S reaches 100 ° C. in step 118 of FIG. That is, the rice cooking control is changed by changing the combustion state according to the amount of cooked rice.

Next, in step 119, although not shown, the countdown timer starts to operate.
This is because rice cooking is completed after 20 minutes have passed since the detection temperature of the detection sensor S reached 100 ° C (see step 140). In step 120, branching is performed again according to the amount of cooked rice, and the combustion state is changed according to the amount of cooked rice. That is, when the amount of cooked rice is large as shown in step 121, forced strong combustion is started, and when the amount of cooked rice is medium or small, forced weak combustion is started as shown in step 122. As shown in step 123, both the forced strong combustion in step 121 and the forced weak combustion in step 122
Minutes, and then the combustion becomes weak in step 124.

As can be seen from the processing in steps 125 and 126, the weak combustion processing in step 124 is as follows.
The process ends when the detection temperature (T2) of the detection sensor S has reached 108 ° C., or has not reached 108 ° C. but has been continued for 3 minutes. That is, when the detection temperature (T2) of the detection sensor S reaches 108 ° C., the process proceeds from step 125 to step 130, and after 3 minutes, proceeds from step 126 to step 127. Step 127
Is a branching process based on the amount of cooked rice. When the amount of cooked rice is small, the process proceeds to step 129, and the weak combustion is continued. When the amount of cooked rice is large or medium, the process proceeds to step 128, and the combustion is switched to the strong combustion.

Then, the next step 129 is the same process as step 125, that is, a process for determining whether or not the detection temperature (T2) of the detection sensor S has reached 108 ° C. If the amount of cooked rice is large or medium in step 127,
The reason why the strong combustion was performed is that the detection temperature of the detection sensor S has not reached 108 ° C. at the stage of step 127, so that the temperature is changed from weak combustion to strong combustion to quickly rise to 108 ° C.

When the detected temperature (T2) of the detection sensor S reaches 108 ° C. in step 129, the process proceeds to step 130 as in step 125. Step 130 is a branching process based on the amount of cooked rice. If the amount of cooked rice is small, the process proceeds to step 131 to perform weak combustion, and if the amount of cooked rice is medium or large, the process proceeds to step 132 to perform strong combustion. Done. The weak combustion in step 131 and the strong combustion in step 132 are continued until the detection temperature (T3) of the detection sensor S reaches the fire extinguishing temperature in step 133. When the temperature reaches the fire extinguishing temperature, the fire is extinguished in step 134, and thereafter,
It becomes a spotting process.

Steps 125 and 129
The two-stage fire extinguishing is performed in step 134 and in order to cook delicious rice with browning. In this way, the amount of cooked rice is determined, and the rice cooker control is changed in accordance with the result of the determination to cook delicious rice. By the way, it seems that the processing of step 129 is unnecessary from steps 124, 128, 131, and 132,
If the amount of cooked rice is large or medium as in step 132, strong combustion is performed. If the process does not proceed to step 128, step 131
When the amount of cooked rice is small as shown in FIG.
It is not necessary to perform the same treatment before and after 2) reaches 108 ° C. That is, for example, the weak combustion in step 131 may be performed when the amount of cooked rice is small or medium, and the strong combustion in step 132 may be performed when the amount of cooked rice is large.

Referring to FIG. 8, the mura process will be briefly described. In step 135, branching is performed according to the amount of cooked rice. If the amount of cooked rice is small, the process proceeds to step 136 to secure a 7-minute unevenness time. If the amount of cooked rice is medium, the process proceeds to step 137 to perform 5 minute unevenness. If the time is secured and the amount of cooked rice is large, the process proceeds to step 138, and the unevenness time for 3 minutes is secured. Step 136, Step 13
7. After step 138, the process proceeds to step 139, where the heater of the lid is turned on, and the temperature controlled heating is performed. This temperature controlled heating is performed until the countdown timer indicates 20 minutes, as shown in step 140. Then, when 20 minutes have elapsed, the process proceeds to step 141, where notification of the completion of rice cooking is performed, and the heat retention is started.

FIG. 9 is a graph showing a change in temperature when cooking five-piece rice with the gas rice cooker shown in FIG. 1; the temperature in the pot (the temperature of rice), the temperature of the pot edge, and the temperature of the pot bottom. It is a graph showing the temperature and the temperature change with respect to the elapsed time of the temperature of the pot lid. Then, time A is the start time of step 107, time B is the start time of step 109, and time C is
Is the end of step 110, that is, the time of measuring the temperature of the pot edge for calculating the amount of cooked rice. As can be seen from the graph, the temperature at the kettle edge at the time point C is measured as a temperature close to the averaged temperature in the kettle (the temperature of rice). As a result, the temperature of the pot is detected, but the temperature close to the rice temperature where the effect of the amount of cooked rice actually appeared, and the data necessary for calculating the amount of cooked rice is measured, and the amount of cooked rice is determined to be medium. Have been.

In the embodiment of the present invention, a gas cooker has been described as a rice cooker. However, the present invention is not limited to a gas cooker.
It may be an electric rice cooker, or may be a gas stove with a rice cooking function or an electric stove with a rice cooking function. Further, the time condition, the temperature condition, and the like are not limited to the description in the embodiment, and if the viewpoint of averaging the temperature in the kettle is satisfied,
It is not limited.

[Brief description of the drawings]

FIG. 1 is a cross-sectional view of a gas rice cooker as a rice cooker according to an embodiment of the present invention.

FIG. 2 is a sectional view taken along line XX of FIG.

FIG. 3 is an enlarged view of the vicinity of a detection sensor of FIG. 1;

FIG. 4 is a further enlarged view near the detection sensor of FIG. 3;

FIG. 5 is a schematic block diagram showing a configuration necessary for determining the amount of cooked rice in FIG. 1;

FIG. 6 is a first flowchart showing control of the gas cooker of FIG. 1;

FIG. 7 is a second flowchart showing control of the gas cooker of FIG. 1;

FIG. 8 is a third flowchart showing control of the gas cooker of FIG. 1;

9 is a diagram showing changes in the temperature of the pot (rice of rice), the temperature of the pot edge, the temperature of the pot bottom, and the temperature of the pot lid with time when cooking the five-piece rice using the gas cooker of FIG. FIG.

[Explanation of symbols]

 4 burner 11 valve device S detection sensor 50 discriminator

Continuation of the front page (74) One of the above agents 100111257 Attorney Eiji Miyazaki (one outsider) (72) Inventor Makiko Abe 4-1-2, Hirano-cho, Chuo-ku, Osaka-shi Osaka Gas Co., Ltd. (72 Inventor Keiko Aoyagi Park Nova Sugamo 1103, 4-22-4 Sugamo, Toshima-ku, Tokyo (72) Inventor Yasuo Koketsu 19-18 Sakuradacho, Atsuta-ku, Nagoya-shi Toho Gas Co., Ltd. (72) Inventor Takashi Oya 2-26 Fukuzumi-cho, Nakagawa-ku, Nagoya-shi Examiner, Linnai Co., Ltd. Toshio Uchida (56) References JP-A-63-68050 (JP, A) JP-A-63-167749 (JP, A) JP-A-7 -8187 (JP, A) JP-A-7-8189 (JP, A) JP-A-5-3829 (JP, A) (58) Fields investigated (Int. Cl. ⁷ , DB name) A47J 27/00 A23L 1/10

Claims (4)

(57) [Claims] A heating means for heating the kettle; and a heating means for controlling a heating power of the heating means to a rice cooking power in order to apply a predetermined amount of heat to the kettle, and then averaging a temperature in the heating pot. Thermal power control means for controlling the thermal power to average the thermal power of the kettle; measuring means for measuring the temperature of the kettle corresponding to the averaged temperature in the kettle; and the corresponding kettle measured by the measuring means A rice cooker, comprising: a determination unit configured to determine the amount of rice cooked based on the temperature of the rice cooker. 2. The time of the heating power of the heating means being the rice cooking power is the first time, and the time of the heating power such that the heating power of the heating means is averaged is the second time longer than the first time. The heating power to be averaged, wherein the heating power to be averaged includes a heating power in which an amount of heat given to the kettle during the first time is equal to an amount of heat given to the kettle during the second time. Rice cooker. 3. The temperature of the corresponding kettle measured by the measuring means is lower than a boiling temperature, and the determining means calculates a difference obtained by subtracting the temperature of the corresponding kettle from the boiling temperature for a predetermined time. The rice cooker according to claim 1 or 2, wherein the amount of cooked rice is determined based on a value obtained by dividing the amount of cooked rice. 4. The rice cooker according to claim 1, wherein the heating means heats the bottom of the pot, and the measuring means includes a temperature sensor for measuring a temperature of an edge of the pot.