JPH05176837A - Rice cooking jar - Google Patents

Abstract

PURPOSE:To cook tasty rice regardless of cooked volume, by judging cooking volume of rice and presetting a temperature-rising curve of standard inner bowl temp. during cooking processes including boiling and its keeping processes according to the cooking volume and further controlling the temperature. CONSTITUTION:A required volume of rice and water are fed in the inner bowl 4 and covered with a lid 2. The start key of an operation unit 11 for function indication and selection is pushed. Cooking processes are started in accordance with a cooking program memorized in ROM of the microcomputer contained in a control unit 10. The microcomputer controls the electric power of rice-cooking heater 6 in accordance with the temp. information from a center sensor 26, a shoulder sensor 25, and a side sensor 30. At first, water is sucked by a small electric power and then a large electric power is used to judge cooking volume. A temp.-rising curve of standard inner bowl temperature is preset in accordance with the cooking volume. The temp. is raised abruptly in compliance with the curve. When a preset specified temp. is detected, the heating ceases and then a steaming process succeeds the above and finally the cooking comes to an end. When warm-keeping is instructed, warm-keeping heaters 8, 9 work. In this way, tasty rice can be cooked regardless of the cooking volume of rice.

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 provided with means for setting a reference inner pot temperature rise curve (ideal rice cooker curve) in the cooking process according to the rice cooking capacity (total number). It is a thing.

[0002]

2. Description of the Related Art Rice cookers currently on the market are a combination of an electric rice cooker and a heat retaining jar.
In such a rice cooker, a heater is provided at the bottom of the inner pot, and heating power is supplied to the heater to cook rice.

In addition, for the purpose of cooking delicious rice, the temperature of the inner pot is measured by a controller equipped with a temperature sensor and a microcomputer, and the temperature or the degree of temperature rise is input to the microcomputer to cook rice. A microcomputer-controlled automatic rice cooker has been developed that determines whether or not the rice is cooked and performs appropriate power control according to the rice cooking capacity. The automatic rice cooker that cooks rice by microcomputer control controls the rice cooking process such as water absorption process, rice cooking capacity determination process, cooking process, boiling maintaining process, first murmuring process, heat retention process, etc., sequentially by program control of the microcomputer. After performing rice cooking in the optimal state and performing rice cooking control, it becomes a heat retention control state.

Then, the temperature of the inner pot is detected in the course of the rice cooking, and the detected inner pot temperature and the reference inner pot temperature rise curve in the cooking process set in the control program of the microcomputer (hereinafter referred to as ideal rice cooking). The rice cooking power is supplied so that the inner pot temperature rises along this ideal rice cooking curve. Fig. 8 shows a conventional ideal rice cooking curve and an inner pan temperature rise curve according to the rice cooking capacity. In FIG. 8, (m) is an ideal rice cooking curve, (s) is an inner pan temperature rise curve when the rice cooking capacity is small, (g) is an inner pan temperature rise curve when the rice cooking capacity is large, and area A is water absorption. The process, the region B is the cooking process, the region C is the boiling maintaining process, the region D is the stripping process, and the region E is the heat retaining process.

[0005]

However, in the above-mentioned conventional technique, since only one standard inner pot temperature rise curve (ideal rice cooking curve) in the cooking process is set, as shown in FIG. The temperature rise of rice and water in the inner pot varies depending on the rice cooking capacity (total number), and the larger the rice cooking capacity (total number), the slower it becomes, which is far from the standard inner pot temperature rise curve (ideal rice cooking curve). , There was a problem that I could not cook delicious rice.

An object of the present invention is to provide a technique capable of cooking delicious rice regardless of the rice cooking capacity (total number).

Another object of the present invention is to provide a technique capable of setting an ideal rice cooking curve according to the rice cooking capacity (total number) in the cooking process.

The above and other objects and novel features of the present invention will be apparent from the description of this specification and the accompanying drawings.

[0009]

[Means for Solving the Problems] In order to achieve the above object, the present invention performs a rice cooking capacity determination, and sequentially controls a rice cooking step including a cooking step and a boiling maintaining step according to the determined rice cooking capacity, The most important feature of the rice cooker for cooking rice is to have means for setting an ideal rice cooking curve (reference inner pot temperature rise curve) according to the rice cooking capacity in the cooking step.

[0010]

According to the above-mentioned means, in the cooking process,
By setting the standard inner pot temperature rise curve according to the rice cooking capacity, rice can be cooked according to this ideal rice cooking curve,
You can cook delicious rice regardless of the cooking capacity (total number).

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described in detail below with reference to the drawings.

FIG. 1 is a sectional view of a rice cooker according to a first embodiment of the present invention. In FIG. 1, 1 is a rice cooker body, 2 is a lid portion of the rice cooker body 1, and 3 is a body portion of the rice cooker body 1.
The main body 3 includes an inner pan 4, an inner pan container 5 for accommodating the inner pan 4, a rice cooker 6 at the bottom of the inner pan 6, a shoulder ring 7 provided on the shoulder of the inner pan container 5, an inner pan container. 5, a shoulder heater 8 for heat retention provided in the shoulder ring 7 of the shoulder 5, a heat retention heater 9 provided for the body of the inner pan storage container 5, a control unit 10 incorporating a microcomputer, etc. It is provided. Further, the inner pot 4 has a shoulder portion contacting a pot lid packing made of an elastic material such as silicon rubber fixed to the pot lid 4a, and an upper portion thereof is covered with the pot lid 4a. The pot lid 4a is formed by molding a material having high thermal conductivity, for example, aluminum. A shoulder sensor (temperature sensor) 25 is provided by being put in a sensor case arranged at a position in close contact with the pan lid 4a. Further, a center sensor (temperature sensor) 29 is provided at the bottom portion of the inner pot 4, and a side sensor (temperature sensor) 30 is provided at the side portion. Reference numeral 11 is a function display selection operation unit.

FIG. 2 is a view showing a panel surface of the function selection operation unit 11. Function display selection operation unit 11
Is arranged at an upper position of the rice cooker main body 1. The function display selection operation unit 11 has a plurality of operation key switches, a light emitting diode for displaying various states, and a time display, as described later. A 7-segment character display is provided. As the operation key switches, there are provided hour key switches, minute key switches, reserved key switches, menu key switches, clock set key switches, start key switches, and cancel / heat retention key switches.

In FIG. 2, numeral 12 is a character display,
For example, it is a 4-digit numerical display liquid crystal module that displays characters of each display digit in 7 segments. The character display unit 12 displays the time and the reserved time when the reserved rice is cooked. 13a is a key switch for operating the hour digit, 13b is a minute key switch for operating the minute digit,
13c is a reservation key switch for instructing a reservation, 13d is a menu key switch for instructing a rice cooking menu, 13e is a start key switch for instructing a rice cooking operation start or a reserved rice cooking operation start, and 13f is for canceling each operation (or during waiting period). A cancel / heat retention key switch, 13g is a clock set key switch for setting the present time. Further, 14 is a status display section for displaying the operation mode. The state display unit 14 is provided with a plurality of light emitting diodes (LEDs) that display various states of the rice cooker. As the states to be displayed, "reservation 1", "reservation 2", "white rice", "early cooked", to display the states of the reservation mode distinction, the rice cooking menu type of rice cooking control, and the heat insulation mode distinction, respectively. "Rice cooked", "rice cooked",
Various states are displayed by turning on the light emitting diodes (LEDs) labeled "brown rice", "porridge", "separately cooked", and "warm".

FIG. 3 is a block diagram showing the configuration of the main part of a control unit using the microcomputer 20.
In FIG. 3, 6 is a rice cooking heater, 8 is a shoulder heater, 9 is a warming heater, 10 is a control unit, 11 is a function display selection operation unit, 25 is a shoulder sensor provided on the pan lid portion, and 29 is an internal heater. A center sensor provided at the bottom of the pot and a side sensor 30 provided at the side of the inner pot. As described above, the function display selection operation unit 11 is provided with the 7-segment character display 12, the operation key switches 13a to 13g, and the light emitting diode of the status display unit 14. 15 is a commercial AC power supply (A
C, 100 V) and 16 are thermal fuses. The control unit 10 includes a relay 1 for controlling energization of the rice cooking heater 6.
7. Triac 18 for controlling energization of heat insulation heater 9
a, a triac 18b for controlling energization of the shoulder heater 8,
Microcomputer 20, clock mechanism 21, buzzer 22
And so on. The shoulder sensor 25 provided on the lid of the inner pot is composed of a thermistor or the like. Further, the center sensor 29 at the bottom provided at the bottom of the pot is also composed of a thermistor or the like. These temperature sensors detect the temperature and output an electric signal corresponding to the temperature. The electric signal corresponding to the temperature is input to the analog / digital conversion port of the microcomputer 20. The microcomputer 20 has a processing unit (CPU), a memory (R) inside.
AM), a program memory (ROM), an input port having an analog / digital conversion function, a plurality of input ports for receiving a key switch input, an output port for outputting a control output signal and a display control signal, and the like. A predetermined output signal is output from the output port in accordance with the input from the input port according to the program stored in. That is, the microcomputer 20
Receives input from each of the shoulder sensor 25, the center sensor 29, the timepiece mechanism, and the operation key switch 13, performs a series of processes according to a processing program incorporated therein, and sends a control signal to a triac for controlling energization of the heater. At the same time as sending, a lighting control signal to the light emitting diode of the status display unit 14 is sent to display the status such as the operation mode.
Further, the time signal from the clock mechanism 21 is input to the microcomputer 20, the time is displayed on the character display 12, and the microcomputer 20 is provided with a signal for determining the reserved time when the timer reserved rice is cooked. Is entered.

Next, the operation of the cooked rice heat insulation jar thus configured will be described.

FIG. 4 is a flow chart showing the outline of the control flow of the entire microcomputer 20. Figure 3
And FIG. 4 will be described.

When the power is turned on, pre-processing for rice cooking control is performed (step 31). In this pre-processing of rice cooking control, initialization processing for resetting various internal registers, timers and the like of the microcomputer 20 is performed, and rice cooking operation instruction data setting processing such as rice cooking menu setting and rice cooking reservation time setting is performed. Start key switch 13e (Fig. 2)
Is turned on (or the reserved time is reached in the case of reserved rice cooking), the relay 17 or the like is controlled to perform rice cooking control to turn on the rice cooking heater circuit (step 3).
2). Next, the rice cooking process control is performed (step 33). As a result, a rice cooking operation for cooking rice is performed. When the rice cooking operation is completed, the relay 17 and the like are turned off (step 3
4) The rice cooker heater circuit is turned off to enter the heat retention control mode in which heat retention control is performed to keep the cooked rice warm. In the heat retention control mode, the process from step 35 is performed.

In this heat retention control mode, normal heat retention control is performed (step 35), and it is determined whether or not there is a temperature abnormality (step 36). If the temperature is abnormal, error processing such as error notification and error display is performed (step 37),
The whole process ends. Also, in step 36,
If the temperature is not abnormal, the process returns to step 35 to repeat the normal heat retention control.

Next, the processing operation of the rice cooking control by the microcomputer control thus constructed will be described.

When a desired amount of rice and water corresponding thereto are put in the inner pot 4 and the start key switch 13e (FIG. 2) is turned on, the microcomputer 20 of the control unit 10
The power supply control for heating in the rice cooking process is started according to the processing steps of the rice cooking program stored in the program memory (ROM) therein. At this time, the microcomputer 20 converts the voltage output from the shoulder sensor 25, the center sensor 29, and the side sensor 30 into a digital amount from the input port A / D of the analog / digital conversion function, inputs the same, and converts it into temperature. Then, the input temperature is determined, and various rice cooking processes are controlled based on the temperature determination result. In this rice cooking process, in the initial stage of rice cooking, a water absorption process is performed in which rice is absorbed by reducing heating power. Next, increase the heating power to determine the rice cooking capacity at a predetermined temperature, set the ideal rice cooking curve according to the rice cooking capacity based on the result of this rice cooking capacity determination, rapidly raise the temperature, and boil the rice. Carry out the raising process,
Then, a boiling maintaining step for continuing boiling is performed. When this boiling maintaining process continues, when the rice has sufficiently absorbed water and the inner bottom of the pot is depleted of water and reaches a predetermined temperature, for example, 130 ° C., this temperature is detected by the center sensor 29 and the microcomputer 20 heats. The heater for heating is turned off, and the boiling maintaining process is completed. Next, during a predetermined time period, the first muddling step, the first additional cooking step, the second uneven cooking step, the second additional cooking step, etc. are performed, and finally the heat retention step is reached and the rice cooking step is completed. When the rice cooking process control is completed, the process proceeds to the heat retention process control.

FIG. 5 is a diagram showing an example of a rice cooking temperature curve (rice cooking curve) showing the temperature change of the inner pot when the normal rice cooking process is controlled by the control of the microcomputer 20 of this embodiment. In FIG. 5, a region A indicates a water absorption step, and the conventional rice cooking capacity determination step is performed during this water absorption step. The rice cooking capacity determination step determines the rice cooking capacity. The region B shows the cooking process, the region C shows the boiling continuous process, the region D shows the purging process including the additional cooking process, and the region E shows the heat retaining process. In the cooking process in the region B, the heating power is increased, the temperature is rapidly raised to boil, and the heating power is controlled to an appropriate heating power according to the rice cooking capacity, and the boiling is appropriately continued to cook the rice.

Further, is a rice cooking temperature curve (rice cooking curve) showing the temperature change of the inner pan when the rice cooking capacity is large, and is a rice cooking temperature curve (rice cooking curve) showing the temperature change of the inner pan when the rice cooking capacity is small. ..

In the cooking process in the region B, the appropriate heating power according to the rice cooking capacity is determined by an appropriate rice cooking ideal curve according to the rice cooking capacity (total number) as shown in FIG. This ideal rice cooking curve is set, for example, by a value obtained by converting the temperature rise rate of the inner pot bottom into time, by t the rice cooking capacity determination data, by a value t _{0 obtained} by converting the unit temperature rise rate of the inner pot bottom into time, and an experimental constant. Where A is A, the energization time t of the heating heater for setting the ideal rice cooking curve can be expressed by the empirical formula of the following formula (1).

T = A × α1 × t ₀ (1) The experimental constant A and the value t _{0 obtained} by converting the unit temperature rising rate of the inner pot bottom into time are determined by experiments. For example, A is 1/1000 and t ₀ is 20 seconds.

Table 1 shows rice cooking control data up to 5 cups for measuring the weight (capacity) of rice cooked by the formula (1).

[0027]

[Table 1]

Then, data corresponding to the temperature of the inner pot bottom rising during the fixed time (t1) is Tm, m = 0, 1,
2, 3 ... 10 and the temperature rise interval is 3 ° C. (ΔT = 3), the correspondence between Tm and the temperature of the inner pot bottom that rises during a fixed time (t1) is shown in Table 2. This represents the slope of the ideal rice cooking curve.

[0029]

[Table 2]

Next, in the cooking process of the first embodiment, the ideal rice cooking curve is set according to the rice cooking capacity, and the rice cooking control process is performed according to the ideal rice cooking curve in the cooking process according to the rice cooking capacity (total number). The operation of will be described.

FIGS. 6A and 6B are flowcharts of the rice cooking control process of the rice cooker of the first embodiment, where Tm is the temperature value (m in the center sensor 29 provided at the bottom of the pan.
Is 0, 1, 2, 3, ... 10).

In the rice cooker control process of the rice cooker of the first embodiment, as shown in FIGS. 6A and 6B, when the program starts, rice cook capacity determination (sum number judgment) is performed (step 101), and water is added to the rice. A water absorption step of absorbing water is started (step 102), and it is determined whether a predetermined time S (for example, 10 minutes) has elapsed (step 103). If the predetermined time S has passed (YES), the water absorption step is completed. If the predetermined time S has not elapsed (NO), the process returns to step 102. When the water absorption process is completed, the rice cooking heater 6 is turned on (step 104) and the fixed timer is started.

Next, the rice cooking ideal curve setting process in the cooking process according to the rice cooking capacity (total number) is started. First, a case where there is one ideal rice cooking curve will be described. The fixed timer is a fixed time (for example, 20 seconds), and until the fixed time (20 seconds) elapses, the temperature of the center sensor 29 is compared with the temperature corresponding to Tm in Table 2 (step 105). Since m = 0 at the first time, it is determined whether the center sensor 29 is 70 ° C. or lower (step 10
6) If it is above, the rice cooking heater 6 is turned off (step 107), and if it is below, the rice cooking heater 6 is turned on (step 108). When the fixed timer (20 seconds) elapses while rotating through this loop, it is set to m + 1 (step 109). The first time, m = 0, so m = 1, then
This m is compared with n (currently set to n = 10) (step 110), and if they do not match, the fixed timer is reset (step 111), the fixed timer is started (step 105), and the center sensor 29 And the temperature corresponding to Tm are compared. Since m = 1 this time, it is determined whether or not the temperature of the center sensor 29 is 73 ° C. or lower (step 106). If the temperature is 73 ° C. or higher, the rice cooking heater 6 is turned off (step 107) and the temperature is 73. If the temperature is not higher than ℃, the rice cooking heater 6 is turned on (step 108).

By repeating the process from m = 0 to m = n = 10 in this way, the pan bottom (center sensor 29) follows the ideal rice cooking curve (rice cooking temperature rising curve) determined by the fixed timer (20 seconds) and Tm. Temperature rises.

Next, after the rice is heated according to the ideal rice cooking curve, the cooking power is set based on the rice cooking capacity determination (sum number determination) data (step 112), and 130 ° C. is detected by the center sensor 29 (step). 113), power is supplied to cook the rice. When the rice is cooked, the steaming process (step 114) is performed and the heat retention process is started.

If the fixed timer in step 105 is set to be long, the temperature rising rate will be slow, and if it is set to be short, it will be fast.

In the case of weighing the rice cooking capacity determination, the value obtained by converting the temperature rising rate of the inner pot bottom into the electric power is W, the rice cooking weight (capacity) determination data is α2, and the unit temperature rising rate of the inner pot bottom is Assuming that the value converted to the energized power is W ₀ and the experimental constant is B (for example, 1/1050), the value w converted to the energized power is the value obtained by converting the temperature rise rate of the inner pan bottom into the empirical formula of the following equation (2). Represented.

W = B × α2 × W ₀ (2) In the formula (2), if B = 1/1050 and W ₀ = 300 watts, W up to 5 cups is as shown in Table 3. become.

[0039]

[Table 3]

[Embodiment 2] FIG. 7 is a flow chart of rice cooking control processing of a rice cooker of Embodiment 2 of the present invention.
m is the temperature value of the center sensor 29 provided at the bottom of the pan as in the first embodiment (m is 0, 1, 2, 3, ..., 10)
Is.

In the flowchart of FIG. 7, when the cooking rice program is started, rice cooking capacity determination (total number determination)
(Step 201), collect the data of the amount of cooked rice, and then enter the water absorption process for sucking water into the rice (Step 202), and determine whether a predetermined time S (for example, 600 seconds) has elapsed. (Step 203). If the water absorption step has passed the predetermined time S (YES), the water absorption step ends. If the predetermined time S has not elapsed (NO), the process returns to step 202 and the water absorption process is continued.

When the water absorption process is completed, the rice cooking process in which the ideal rice cooking curve of the present invention is set is entered, the rice cooking heater is turned on (step 204), and then the rice cooking capacity determination (total number determination) of step 201 is performed. Check the obtained data and see if the amount of rice cooked is small (step 205), medium (step 206), or other (large) (step 2).
06 NO) is determined.

The standard for small amount, medium amount and large amount is as follows. In a rice cooker capable of cooking the number of cups (rice cooking capacity) shown in Table 1, about 1 to 2 cups for small amount, 3 to 4 cups for medium amount, Use 5 cups or more as a guide. Next, if the amount of cooked rice is small (YES in step 205), it is confirmed whether the fixed timer TS (for example, 19 seconds) has elapsed (step 207). If TS has not elapsed (NO in step 207), the temperature detected by the center sensor 29 is compared with Tm (step 210). Since m = 0 at the first time, Tm is To from Table 2 and is 70 ° C.
And the temperature of the sensor center 29 are compared, and Tm ° C (7
If it is 0 ° C or less, the rice cooking heater 6 is on (step 211), and if it is Tm ° C (70 ° C) or less,
The rice cooking heater 6 is turned off (step 212), the process returns to step 205 again, and this is repeated for TS seconds (for example, 19 seconds).

When TS seconds (for example, 19 seconds) have elapsed (YES in step 207), the process m + 1 (step 21)
Perform 3) and set m = 1. Next, m and n (this embodiment 2)
Then, n = 10) is compared (step 214), and if not m = n, the fixed timer TS is reset (set to 0).
(Step 215) Then, the process returns to Step 205.
Then, check the amount of cooked rice in the same way (step 2
05), it is started as a fixed timer for TS seconds (for example, 19 seconds) (step 105), and the temperature of the center sensor 29 is compared with the temperature corresponding to Tm (step 21).
0). Since m = 1 this time, Tm becomes T ₁ and 73 ° C.
Is set, and the temperature of the center sensor 29 is 73
It will be compared with ° C, if it is more than 73 ° C,
The rice cooking heater 6 is turned off (step 212), and if it is 73 ° C or lower, the rice cooking heater 6 is turned on (step 21).
1).

In this way, by repeating from m = 0 to m = n = 10, the fixed timer TS (for example, 19
The temperature of the pan bottom (center sensor 29) rises according to a small amount of ideal rice cooking curve (rice cooking temperature rise curve) determined by the second and Tm.

Similarly, when the rice cooking amount (total number) obtained in the total number determination (step 201) is medium, the fixed timer is set to Tm.
(For example, 17.5 seconds) is set (step 208),
As in the case of a small amount, it is compared whether or not the temperature of the center sensor 29 is Tm ° C or lower for Tm seconds (for example, 17.5 seconds) (step 210).
Turn on the rice cooking heater 6 (step 211), and the temperature is Tm.
If it is above ° C, turn off the rice cooking heater 6 (step 21
2) Do. This is repeated from m = 0 to m = n = 10, and rice is cooked according to the ideal rice cooking curve (rice cooking temperature rise curve) of medium amount. When the amount of cooked rice (total) data obtained in step 201 is large (NO in step 206), the fixed timer is set to TL (for example, 16.5 seconds) (step 209), and the same operation as the small and medium quantities is performed. From m = 0 to m =
Repeatedly cook up to 10 and cook a large amount of rice according to the ideal cooking curve.

Next, after heating according to the ideal rice cooking curve, the data obtained by the rice cooking amount (total number) in step 201 is confirmed again (small amount, medium amount, large amount) (step 21).
6, 217), and the rice is cooked with the cooking power according to the quantity. For example, in the case of a small amount (YE in step 216)
S), the rice cooking heater 6 is set to WS (for example, 450 watts) (step 218), and when the amount is medium (step 21).
7, YES), the rice cooking heater 6 is set to WM (for example, 600 watts) (step 219), and when the amount is large (NO in step 217), the rice cooking heater 6 is set at WL (for example, 800).
If the temperature of the center sensor 29 is equal to or lower than 130 ° C. (step 220), the process returns to step 216 and is heated to 130 ° C. (step 221) to continue cooking rice. The temperature of the center sensor 29 is 1
When the temperature is 30 ° C. or higher (NO in step 221), the rice is cooked through the Musashi process (step 222).

As can be seen from the above description, the first embodiment
According to 2 and 2, by setting the ideal rice cooking curve according to the rice cooking capacity (total number) in the cooking process, the rice cooking ideal curve according to the determined rice cooking capacity (total number) is followed according to the ideal rice cooking curve. You can cook delicious rice regardless of the cooking capacity (total number).

Although the present invention has been specifically described based on the embodiments, the present invention is not limited to the above embodiments, and it goes without saying that various modifications can be made without departing from the scope of the invention. ..

[0050]

As described above, according to the present invention, rice can be cooked according to the ideal rice cooking curve in the cooking process according to the determined rice cooking capacity (total number). ) Can cook delicious rice.

[Brief description of drawings]

FIG. 1 is a sectional view of a rice cooker according to a first embodiment of the present invention,

FIG. 2 is a front view showing a panel surface of the function selection operation unit according to the first embodiment,

FIG. 3 is a block diagram showing a configuration of a main part of a control unit using the microcomputer of the first embodiment,

FIG. 4 is a flowchart showing an outline of the overall control flow of the microcomputer of the first embodiment,

FIG. 5 is a diagram showing an example of a rice cooking temperature curve showing the temperature change of the inner pot when the normal rice cooking process is controlled by the control of the microcomputer of the first embodiment;

FIG. 6A is a flow chart of rice cooking control processing of the rice cooker of the first embodiment,

FIG. 6B is a flowchart of rice cooking control processing of the rice cooker of the first embodiment,

FIG. 7 is a flowchart of rice cooking control processing of the rice cooker according to the second embodiment of the present invention,

FIG. 8 is a diagram showing an example of a rice cooking temperature curve showing a temperature change of an inner pot when a conventional rice cooking process is controlled by controlling a conventional microcomputer.

[Explanation of symbols]

1 ... Rice cooker main body, 2 ... Lid part, 3 ... Main body part, 4 ... Inner pot, 4
a ... pan lid, 5 ... inner pan storage container, 6 ... rice cooker, 7 ... shoulder ring, 8 ... shoulder heater, 9 ... heater heater, 10 ... control unit, 11 ... function display selection operation unit, 12 ... character display , 13 ... operation key switch, 13a ... hour key switch, 13b ... minute key switch, 13c ... reservation key switch, 13d ... menu key switch, 13e ... start key switch, 13f ... cancel / heat retention key switch, 13g
… Clock set key switch, 14… Status display, 15…
Commercial AC power supply, 16 ... Thermal fuse, 17 ... Relay, 1
8, 19a, 19b ... Triac, 20 ... Microcomputer, 21 ... Clock mechanism, 22 ... Buzzer, 25 ... Shoulder sensor, 29 ... Center sensor, 30 ... Side sensor.

Claims (1)

[Claims] 1. A rice cooking capacity is determined, and a rice cooking process including a cooking process and a boiling maintaining process is sequentially controlled according to the determined rice cooking capacity, and in a rice cooker for cooking rice, according to the rice cooking capacity in the cooking process. A rice cooker characterized in that it is provided with means for setting a temperature rise curve of the standard inner pot.