JP3912940B2 - rice cooker - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention belongs to the technical field of rice cookers, and mainly relates to a rice cooker that is controlled by controlling the cooking temperature in the final rice cooking process.
[0002]
[Prior art]
The rice cooker includes a rice cooker that heats the rice cooker and a control unit that controls the rice cooker, and as shown in FIG. 5, a preliminary cooking step (A) of impregnating rice grains with water and rice cooking The main cooking step (B) for evaporating the water in the kettle and the steaming step (C) for steaming the cooked cooked rice are sequentially performed to cook rice. And the said main cooking process (B) is the temperature rising process B1 heated until the inside of a rice cooker will be in a boiling state, the moisture evaporation process B2 which maintains the inside of a rice cooking pot in a boiling state, and evaporates a water | moisture content, and a rice cooking pot It consists of final rice cooking process B3 which heats until the inside becomes predetermined cooking temperature E.
[0003]
By the way, conventionally, there is a demand for scorching cooked rice cooked with a rice cooker, and in general, the cooking temperature E in the final rice cooking process B3 is set higher than that without scorch. To do. Specifically, the cooking temperature E is set to about 115 ° C. when not scorched, but is set to about 150 ° C. when scorched. In this way, in the final cooking step B3, because more heat Ru are added et al rice as compared to when not browned, browning attaches to rice kettle bottom.
[0004]
[Problems to be solved by the invention]
However, as shown in FIG. 6, the water evaporation temperature T which is the temperature in the kettle in the water evaporation step B2 is maintained at around 100 ° C. which is the boiling temperature of water. Depending on the condition of the rice, such as when cooking white rice, when cooking cooked rice, when cooking red rice, it becomes higher (T ° C → T1 ° C) or lower (T ° C → T2 ° C) It fluctuates at every cooked rice. Even in such a case, since the cooking temperature E is conventionally set as an absolute value such as 150 ° C., the temperature difference D between the cooking temperature E and the water evaporation temperature T varies every time rice is cooked. (D1 <D <D2 in FIG. 6) occurs. Therefore, when the state of the rice changes, the heating temperature (D, D1, D2) in the final rice cooking process B3 is different every time the rice is cooked, so the amount of heating to the cooked rice is different, and as a result, the cooked rice is cooked each time the rice is cooked. There is a problem that variation is caused by darkness or darkness.
[0005]
The present invention includes: a rice cooker that heats the rice cooker, a temperature detection unit that detects the temperature in the rice cooker, and a control unit that controls the operation of the rice cooker. After performing the moisture evaporation process to evaporate moisture while maintaining the boiling state, the temperature inside the kettle detected by the kettle temperature detection unit is raised until the temperature reaches the cooked temperature, and the cooked rice at the bottom of the kettle is burnt In the “rice cooker that performs the rice cooking process”, it is an object to make the degree of scorching of the cooked rice equal even if the state of the rice is different.
[0006]
[Means for Solving the Problems]
The technical measures taken to solve the above problems are as follows.
“A cooking temperature setting unit is provided that sets a temperature obtained by adding a predetermined value ΔT ° C. to the water evaporation temperature, which is the temperature in the kettle detected by the temperature sensing unit in the moisture evaporating step, as the cooking temperature ,
A burnt level designating unit for designating the burnt level of cooked rice, a temperature changing unit for changing ΔT ° C in the cooked temperature setting unit, and a heating capability changing unit for changing the heating capability of the rice cooker in the final rice cooking process, Provided,
The temperature changing unit increases the ΔT ° C as the burnt level specified by the burnt level specifying unit is increased, and
The heating capacity changing unit is characterized in that the heating capacity of the rice cooker is reduced as the burn level specified by the burn level specifying unit is increased . ]
The technical means operates as follows.
[0007]
When the main cooking process is started, the inside of the rice cooker is kept in a boiling state in the moisture evaporation process to evaporate the water, and then the temperature is raised until the temperature in the pot reaches the cooked temperature in the next final cooking process. The cooked rice is burnt.
[0008]
At this time, the moisture evaporation temperature, which is the temperature in the pot in the moisture evaporation step, varies depending on the state of rice as described above, but is detected by the pot temperature detector every time rice is cooked. Evaporation temperature is accurately grasped. And, as the cooked temperature, a temperature obtained by adding a predetermined value ΔT ° C to the moisture evaporation temperature detected by the cooker temperature detector by the cooker temperature setting unit is set. The rising temperature is always set to ΔT ° C.
[0009]
As a result, even if the water evaporation temperature changes depending on the state of rice every time it is cooked, unless the amount of cooked rice or the heating capacity of the cooker is changed, in the final cooking step, it corresponds to ΔT ° C for cooked rice every time. The amount of heat is added equally.
[0010]
Further, since [Delta] T ° C. before Symbol cooking up temperature setting unit is changed according to the browning level from the browning level specifying unit by the temperature changing unit, changing the heating amount in the final cooking step is in response to the browning level Therefore, the degree of burning of cooked rice can be changed according to the level of burning. That is, if the burnt level is specified to be high, the ΔT ° C is increased and the amount of heating in the final rice cooking process is increased, so that cooked rice with deep burnt can be cooked. On the other hand, when the burnt level is set low, the ΔT ° C. becomes low and the cooked rice can be cooked thin. Accordingly, by providing the burnt level specifying unit and the temperature changing unit and designating a predetermined burnt level, the burnt condition of the cooked rice can be adjusted and multi-stage burnt can be applied.
[0011]
The heating up from the heating capacity of the stove heater in the final cooking step is changed according to the browning level from the browning level specifying unit by the heating capacity change unit, it reaches the cooking up temperature in the final cooking step Since the time can be changed according to the burnt level, the degree of burnt rice can also be changed according to the burnt level. That is, if the burnt level is specified to be high, the heating capacity of the rice cooker in the final rice cooking process is reduced, so that the time until reaching the cooked temperature E is increased from t1 to t2, as shown in FIG. Thus, the heating time in the final rice cooking process becomes longer ((t1-t) <(t2-t)). Then, since the heating amount to cooked rice increases, cooked cooked rice can be cooked. On the other hand, if the burnt level is set low, the heating capacity increases and the time to reach the cooking temperature is shortened. Therefore, the heating time in the final rice cooking process is shortened and the cooked rice can be cooked. Accordingly, by providing the burnt level specifying unit and the heating capacity changing unit and specifying a predetermined burnt level, the burnt degree of the cooked rice can be adjusted and multi-stage burnt can be applied.
[0012]
Further, according to the above technical means, the amount of heat applied per unit amount of cooked rice is further increased in the final cooking step, according to “ΔT ° C. in the cooked temperature setting unit is set high in proportion to the amount of cooked rice”. Since the amount of cooked rice is constant regardless of the amount of cooked rice, the degree of cooked rice can be made equal regardless of the amount of cooked rice.
[0013]
In the technical means, “the ΔT ° C. is determined within a range of 50 ° C. to 140 ° C. This is because if the ΔT ° C is less than 50 ° C, the cooked rice at the bottom of the kettle will not be easily burnt, but if it exceeds 140 ° C, the temperature of the rice cooker itself will reach about 250 ° C and the coating material of the rice cooker may melt. Corresponds to that there is.
[0014]
【The invention's effect】
As described above, according to the present invention, even if the state of rice is different each time it is cooked, the amount of heat corresponding to ΔT ° C is equally applied to the cooked rice in the final rice cooking process. Can be made equal.
[0015]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments of the present invention will be described below with reference to the drawings.
[0016]
FIG. 1 is a configuration diagram showing a rice cooker according to the present embodiment. As shown in FIG. 1, this rice cooker is arranged at a rice cooker 1 in which an upper lid 11 is arranged and at the bottom of the rice cooker 1. And a gas burner 2 (rice cooker) for heating the rice cooker 1. In the gas circuit to the gas burner 2, the first gas valve 22, the second gas valve 23, and the proportional valve 24 are arranged in this order from the upstream side, and the first gas valve 22 and the second gas valve 23 are arranged in this order. The gas circuit to the pilot burner 26 branches from between the two.
[0017]
Further, the rice cooker is provided with a hook edge sensor 12 that comes into contact with the outer surface near the opening edge of the rice cooker 1 and a pot bottom sensor 13 that comes into contact with the outer face of the bottom of the rice cooker 1. The hook edge sensor 12 and the bottom sensor 13 function as a pot temperature detecting unit that detects the pot temperature of the rice cooker 1.
[0018]
Moreover, this rice cooker comprises the burnt eye level designation | designated part 5 which designates the burning condition of the cooked rice which a user tries to cook. The burnt eye level designation unit 5 includes an UP / DOWN counter 50, a burnt eye level increase button 51 connected to the UP input terminal, and a burnt eye level drop button 52 connected to the DOWN input terminal. Further, a burnt level indicator 55 having a burnt level display lamp 54 is connected to the output part of the UP / DOWN counter 50. The burned rice level can be adjusted in 11 steps from “−5” to “+5”, for example, by setting the standard to “0” by the output of the burnt eye level designation unit 5.
[0019]
Furthermore, this rice cooker comprises a control device 30 that controls the operation of the gas burner 2 that functions as a rice cooker. The control device 30 is connected to the first gas valve 22, the second gas valve 23, the proportional valve 24, the hook edge sensor 12, the hook bottom sensor 13, and the burnt eye level designation unit 5. Moreover, this control apparatus 30 changes the cooking temperature setting part 31 which sets the cooking temperature E of cooked rice, the temperature change part 32 which changes the said cooking temperature E, and the thermal power (heating capability) of the said gas burner 2. And a heating capacity changing unit 33 that performs heating.
[0020]
The cooked temperature setting unit 31 sets a predetermined value ΔT according to the burnt eye level to the moisture evaporation temperature T which is the temperature in the pot detected by the pot edge sensor 12 in the moisture evaporation process B2 of the main cooking process (B). The temperature obtained by adding ℃ is set as the cooked temperature E. Thereby, the rising temperature in the pot in the final rice cooking step B3 is always set to ΔT ° C. This ΔT ° C. is determined within a range of 50 ° C. to 140 ° C. This is because if the ΔT ° C is less than 50 ° C, the cooked rice at the bottom of the kettle becomes difficult to be burnt, whereas if it exceeds 140 ° C, the temperature of the rice cooker 1 itself reaches about 250 ° C and the fluorine coating material of the rice cooker 1 melts. Respond to fears. In the initial state, the UP / DOWN counter 50 in the burnt eye level designation unit 5 is set to the standard “0”, and ΔT ° C. at this time is set to 90 ° C.
[0021]
The temperature changing unit 32 sets the ΔT ° C. higher as the burnt level in the burnt level specifying unit 5 increases. When ΔT ° C. is increased in this way, the amount of heating in the final rice cooking process B3 increases, so that cooked rice with a dark burnt can be cooked. In this example, as shown in FIG. 2, as ΔT ° C., when the amount of cooked rice is “small” according to the level designation in the burnt eye level designation unit 5, it is 8 ° C. within the range of 50 ° C. to 130 ° C. It is set to 11 steps in increments, and when the amount of cooked rice is “large”, it is set to 11 steps in increments of 8 ° C. within the range of 60 ° C. to 140 ° C. However, ΔT ° C. may be set at more or less stages, and ΔT ° C. can be set only by level designation from the burnt level designation unit 5 without adding the amount of cooked rice. Also good.
[0022]
The heating capacity changing unit 33 sets the heating power (heating capacity) of the gas burner 2 to be lower as the burning level in the burning level specifying unit 5 becomes higher. Then, as shown in FIG. 3, the temperature curve L in the last rice cooking process B3 becomes that temperature gradient becomes small, and comes to draw the temperature curve L3. Thereby, time until it reaches the above-mentioned cooking temperature E extends from t1 to t2, and the heating time of the final rice cooking process B3 becomes longer ((t1-t) <(t2-t)), and the amount of heating to cooked rice Because it increases, you can cook cooked rice with dark burnt. In this example, the opening degree of the proportional valve 24 in the gas circuit of the gas burner 2 can be set in three stages according to the level designation in the burnt eye level designation unit 5. That is, as shown in FIG. 2, as the opening degree of the proportional valve 24, when the UP / DOWN counter 50 in the burnt level specifying unit 5 is between "-2" and [+2], the opening degree is "medium" (fully open). It is set to 2/3 of the hour, but when it is between “+3” and “+5” by raising it by the burnt level raising button 51, the opening degree is changed to “small” (1/3 when fully opened). On the other hand, when it is lowered by the burnt eye level lowering button 52 and is between “−3” and “−5”, the opening degree is changed to “large” (fully opened). In this case as well, the opening degree of the proportional valve 24 may be adjusted not only in three stages but also in more or less stages.
[0023]
Next, the rice cooking operation of the rice cooker will be described.
[0024]
Before starting cooking with this rice cooker, the user operates the UP / DOWN counter 50 of the burnt eye level specifying unit 5 to set it to the desired burn condition. Then, the burnt level signal output from the UP / DOWN counter 50 is applied to the control device 30 and also to the burnt level indicator 55, and a specific burnt level display lamp 54 corresponding to the burnt level set by the user is displayed. Light.
[0025]
As shown in FIG. 5, the basic rice cooking operation by the present rice cooker sequentially executes the preliminary cooking process (A), the main cooking process (B), and the steaming process (C) as shown in FIG. To do.
[0026]
When the rice cooking switch is turned on, the first gas valve 22 and the second gas valve 23 shown in FIG. 1 are opened, the gas burner 2 is ignited, and the preliminary cooking step (A) is executed. In this preliminary cooking step (A), the amount of combustion of the gas burner 2 is controlled by adjusting the opening of the proportional valve 24, the temperature in the rice cooker 1 is maintained at about 50 ° C., and a predetermined preliminary cooking time (10 minutes). Heat rice cooker 1 for ~ 20 minutes. Thereby, the moisture content of the rice grain in the rice cooker 1 increases. At this time, the preliminary cooking time may be adjusted to adjust the hardness level of the cooked rice. That is, in order to increase the hardness level of cooked rice, the pre-cooking time is shortened and the moisture content of the rice grain is lowered. Conversely, in order to lower the hardness level of cooked rice, the pre-cooking time is lengthened and the moisture content of the rice grain is increased. In this case, although not shown in the present example, a hardness level designation unit similar to the burnt level designation unit 5 is provided, and the preliminary cooking is performed by the function unit of the control device 30 according to the hardness level input to the hardness level designation unit. The time may be controlled.
[0027]
And if the said preliminary cooking time passes, a preliminary cooking process (A) will be complete | finished and it will transfer to the following main cooking process (B).
[0028]
In the main cooking step (B), a temperature raising step B1, a water evaporation step B2, and a final rice cooking step B3 are sequentially performed (see FIG. 5).
[0029]
In the temperature raising step B1, the rice cooker 1 is heated until the inside of the rice cooker 1 is in a boiling state. At this time, the amount of combustion of the gas burner 2 is controlled so that the inside of the rice cooker 1 is in a boiling state in about 7 minutes. For example, the temperature inside the kettle is detected by the hook edge sensor 12 a total of 24 times every 10 seconds in the first 4 minutes, and then the temperature inside the pot detected by the hook edge sensor 12 is 95 ° C. close to the boiling temperature of water in 3 minutes. Calculate the temperature curve that reaches the degree. Then, the combustion amount of the gas burner 2 is controlled by adjusting the opening of the proportional valve 24 so that the temperature in the pot rises along the temperature curve calculated here. Moreover, the amount of cooked rice is determined from the opening state of the proportional valve 24 at this time. That is, if the opening state of the proportional valve 24 in this temperature raising step B1 is larger than a predetermined value, it is determined that the amount of cooked rice is “large”, and if it is smaller, it is determined that the amount of cooked rice is “small”. Based on the determined amount of cooked rice, the moisture evaporation determination temperature F for determining the end of the next moisture evaporation step B2 and the reference of ΔT ° C. by the temperature changing unit 32 described above are determined. The moisture evaporation determination temperature F is set to 120 ° C. when the amount of cooked rice is “large”, and is set to 110 ° C. when the amount of cooked rice is “small”. Then, when the temperature rising time of about 7 minutes has elapsed, the following operation is performed in order to determine whether or not the inside of the rice cooker 1 has actually become a boiling state. That is, when the temperature rise time of about 7 minutes has elapsed, the proportional valve 24 is once fully opened to bring the gas burner 2 into the maximum combustion state, and the temperature inside the hook is monitored for a predetermined time by the hook edge sensor 12 and stabilized to a constant value. It is determined whether or not. This is because when the liquid is in a boiling state, the temperature (boiling point) is maintained no matter how much it is heated. When the inside of the rice cooker 1 is in a boiling state, the temperature in the kettle at that time is stabilized at a constant value. It is based on. And if the inside of the rice cooking pot 1 will be in a boiling state, it will transfer to the following moisture evaporation process B2.
[0030]
In the water evaporation step B2, the rice cooker 1 is heated until the water in the rice cooker 1 is almost evaporated.
At this time, the opening degree of the proportional valve 24 may be adjusted to a predetermined opening degree, the amount of combustion of the gas burner 2 may be controlled to adjust the heating time, and the viscosity level of the cooked rice may be adjusted. That is, in order to increase the viscosity level of cooked rice, the opening degree of the proportional valve 24 is decreased, the heating amount per unit time by the gas burner 2 is decreased, and the time of the water evaporation step B2 is increased. Conversely, to lower the viscosity level of cooked rice, the opening of the proportional valve 24 is increased to increase the amount of heating per unit time by the gas burner 2 and to shorten the time of the water evaporation step B2. In this case, although not shown in the present example, a viscosity level designating unit similar to the burnt eye level designating unit 5 is provided, and the moisture evaporation is performed by the function unit of the control device 30 according to the viscosity level input to the viscosity level designating unit. The amount of combustion of the gas burner 2 in the process may be controlled.
[0031]
Further, the temperature in the pot that is constantly changing in the water evaporation step B2 is detected by the hook edge sensor 12, and the temperature in the pot at this time is input as the water evaporation temperature T to the cooking temperature setting unit 31. At this time, the temperature in the kettle may be detected only once after a predetermined time has passed, and this may be used as the water evaporation temperature T. The temperature inside the kettle is detected several times at regular time intervals, and the average value is obtained. May be the moisture evaporation temperature T. And this cooking temperature setting part 31 calculates | requires the temperature which added (DELTA) TdegreeC according to the burnt eye level designated from the said burnt eye level designation | designated part 5 to this moisture evaporation temperature T in consideration of the amount of rice cooking, The temperature (T + ΔT ° C.) obtained in step 1 is set as the cooking temperature E in the next final rice cooking step B3.
[0032]
And since the inside of the rice cooker 1 is maintained in the boiling state in the water evaporation step B2, the water in the rice cooker 1 evaporates as the water evaporation step B2 proceeds, and when the water is almost evaporated, It rises. At this time, it is determined whether or not the temperature in the hook detected by the hook edge sensor 12 has reached the water evaporation determination temperature F set in the temperature raising step B1, and when the water evaporation determination temperature F is reached, the water evaporation step B2 is followed. It shifts to the last rice cooking process B3.
[0033]
In the final rice cooking process B3, the opening of the proportional valve 24 (see FIG. 2) is set according to the burnt level specified by the burnt level specifying unit 5 to determine the combustion amount of the gas burner 2, and detected by the hook edge sensor 12 It is determined whether or not the cooked pot internal temperature has reached the cooked temperature E set by the cooked temperature setting unit 31. In this final rice cooking step B3, the amount of heat corresponding to ΔT ° C. is equally applied to the cooked rice every time. That is, as shown in FIG. 4, the water evaporation temperature T ranges from T ° C. to T 1 ° C. depending on the state of the rice, such as when cracked rice, the type and quality of the rice, and white rice, cooked rice, red rice, etc. It becomes higher or vice versa, and it is lowered from T ° C to T2 ° C. In this case, conventionally, since the cooking temperature E is set as an absolute value such as 150 ° C., there is a variation in the temperature difference D between the cooking temperature E and the water evaporation temperature T (in FIG. 6). , D1 <D <D2). However, in this example, each time the rice is cooked, the kettle edge sensor 12 detects the moisture evaporation temperature T so that it can be accurately grasped. As the cooked temperature E, the moisture evaporation temperature T detected here is a predetermined value ΔT ° C. Therefore, as shown in FIG. 4, even when the water evaporation temperature T is T1 ° C. and the temperature curve in the final rice cooking process B3 is L1, the water evaporation temperature T is T2 ° C. Even if the temperature curve in the final rice cooking process B3 depicts L2, the rising temperature in the rice cooker 1 in the final rice cooking process B3 is always set to ΔT ° C. As a result, even if the state of the rice changes every time the rice is cooked, the amount of heat applied to the cooked rice in the final rice cooking process B3 is always equal to the amount of heat corresponding to ΔT ° C. . Then, when the temperature inside the pot detected by the hook edge sensor 12 reaches the temperature E, the first and second gas valves 22 and 23 are closed and the gas burner 2 is extinguished.
[0034]
Thereby, this cooking process (B) is complete | finished.
[0035]
Thereafter, the steaming step (C) of steaming the cooked rice in the rice cooker 1 for a predetermined time is executed, and the whole rice cooking step is completed by the end of the steaming step (C).
[0036]
As described above, the water evaporation temperature T in the water evaporation step B2 varies depending on the state of the rice, such as cracked rice, the type and quality of the rice, and when cooking white rice, cooked rice, and red rice. In the rice cooker according to the embodiment, since the water evaporation temperature T is detected by the pot edge sensor 12 every time rice is cooked, the water evaporation temperature T at the time of rice cooking is accurately detected regardless of the state of rice. And since the temperature which added (DELTA) T degreeC to this water | moisture-content evaporation temperature T is set as cooking temperature E for detecting cooking (end of this cooking process (B)), every time it cooks by the state of rice Even if the water evaporation temperature T changes, the rising temperature in the rice cooker 1 in the final rice cooking process B3 is always set to ΔT ° C. Therefore, in the final rice cooking step B3, the amount of heat corresponding to ΔT ° C. is equally applied to the cooked rice every time, so that the cooked rice can always be burned evenly even if the state of the rice is different.
[0037]
Furthermore, in this example, the burn power level designation unit 5 for inputting the burnt level of cooked rice, and the thermal power of the temperature changing unit 32 and the gas burner 2 for changing ΔT ° C. at the cooking temperature E according to the burnt level input here. Since the heating capacity changing section 33 to be changed is provided, the degree of cooked rice can be adjusted in multiple stages according to the burnt eye level.
[0039]
In addition , although the gas rice cooker using the gas burner 2 was mentioned as this rice cooker in this Embodiment, you may apply to the electric rice cooker using an electric heater as a rice cooker.
[0040]
Furthermore, although the hook temperature is detected by the hook edge sensor 12, it may be detected by using the hook bottom sensor 13.
[Brief description of the drawings]
FIG. 1 is a configuration diagram illustrating a rice cooker according to an embodiment.
FIG. 2 is a table showing a relationship between a burnt eye level by a burnt eye level designation unit, ΔT ° C., and the opening of a proportional valve.
FIG. 3 is a graph showing a temperature change in the final rice cooking step B3 when the heating power (heating ability) of the gas burner is reduced.
FIG. 4 is a graph showing the cooking temperature E in the final rice cooking step B3 when the water evaporation temperature T in the water evaporation step B2 changes.
FIG. 5 is a graph showing changes in the temperature in the pot during the rice cooking operation.
FIG. 6 is a graph showing the cooking temperature E in the final rice cooking step B3 when the water evaporation temperature T in the conventional water evaporation step B2 changes.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Rice cooker 2 Gas burner 5 Burnt level designation | designated part 11 Upper cover 12 Pot edge sensor 13 Pot bottom sensor 22 1st gas valve 23 2nd gas valve 24 Proportional valve 26 Pilot burner 30 Controller 31 Cooking temperature setting part 32 Temperature change part 33 Heating capacity changing unit 50 UP / DOWN counter 51 Burnt level increase button 52 Burnt level drop button 54 Burnt level display lamp 55 Burnt level indicator T, T1, T2 Moisture evaporation temperature E, E1, E2 Cooking temperature

Claims (3)

A rice cooker that heats the rice cooker, a temperature detector inside the kettle that detects the temperature inside the rice cooker, and a control unit that controls the operation of the rice cooker are maintained in a boiling state. After performing the water evaporation process to evaporate the water, the rice cooking process is carried out for the final rice cooking process in which the temperature inside the kettle detected by the temperature sensor in the kettle is cooked and heated until the cooked rice reaches the temperature. In the vessel
A cooking temperature setting unit is provided for setting a temperature obtained by adding a predetermined value ΔT ° C to the moisture evaporation temperature, which is the temperature in the pot detected by the pot temperature detecting unit in the moisture evaporation step, as the cooking temperature ,
A burnt level designating unit for designating the burnt level of cooked rice, a temperature changing unit for changing ΔT ° C in the cooked temperature setting unit, and a heating capability changing unit for changing the heating capability of the rice cooker in the final rice cooking process, Provided,
The temperature changing unit increases the ΔT ° C as the burnt level specified by the burnt level specifying unit is increased, and
The heating capability changing unit is configured to reduce the heating capability of the rice cooking heater as the burning level specified by the burning level specifying unit is increased . In the rice cooker according to claim 1,
ΔT ° C. in the cooked temperature setting unit is set to be high in proportion to the amount of cooked rice. In the rice cooker according to claim 1 or 2,
The ΔT ° C. is determined within a range of 50 ° C. to 140 ° C.

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