JP2021046978A - Heating cooker - Google Patents

Abstract

To provide a heating cooker capable of properly performing rice cooking even in a disturbance occurrence state.SOLUTION: An operation control unit is constituted to successively execute: a first heating process for starting heating of a cooking stove burner with strong-side fire power as a heating process of rice cooking, and continuing the heating state until a temperature detection unit detects a determined reference temperature thereafter; a second heating process for continuing the heating of the cooking stove burner with weak-side fire power; a third heating process for continuing the heating of the cooking stove burner with strong-side fire power until the detection temperature detected by the temperature detection unit reaches a fire power switching temperature after it reaches an equilibrium temperature to bring an equilibrium state where the change of the detection temperature is small; a fourth heating process for continuing the heating of the cooking stove burner with weak-side fire power; and a fifth heating process for continuing the heating of the cooking stove burner with strong-side fire power until the temperature reaches a heating termination temperature, and the heating cooker is constituted to discriminate the equilibrium state in a mode that a discrimination condition for discriminating the equilibrium state is severe when a disturbance occurrence state is detected.SELECTED DRAWING: Figure 3

Description

The present invention includes a stove burner that heats the bottom of a cooking container and can adjust the heating power, a temperature detector that detects the temperature of the bottom of the cooking container, and an operation control that controls heating of the stove burner for cooking rice. A part is provided,
The first operation control unit starts heating the stove burner with a strong side thermal power as a heat treatment for cooking rice, and then continues the heating state until the temperature detection unit detects a set reference temperature. The state of continuing the heating of the stove burner with the heat treatment and then the weak side heating power is continued until the elapsed time for setting the elapsed time from the start of the heating to the set reference temperature becomes shorter. After reaching the equilibrium temperature at which the detection temperature detected by the temperature detection unit reaches the equilibrium state, the state in which the heating of the stove burner is continued by the strong side thermal power is followed by the second heat treatment. The third heat treatment that continues until the thermal power switching temperature set based on the equilibrium temperature is reached, and then the state that the heating of the stove burner is continued by the weak side thermal power is continued until the set time elapses. 4 Heat treatment, followed by a fifth heat treatment in which the state of continuing the heating of the stove burner with the strong side thermal power is continued until the detected temperature reaches the heating end temperature set based on the equilibrium temperature. For cookers configured to run sequentially.

In such a cooker, the operation control unit sequentially executes the first heat treatment to the fifth heat treatment as the heat treatment for cooking rice, so that good rice cooking can be performed (for example, Patent Document 1). reference).

Japanese Unexamined Patent Publication No. 11-287450

In the heating cooker, when the stove burner is burned by the strong side heat, for example, when the stove is in a state of disturbance that causes abnormal ventilation to the stove burner due to the inflow of outside air due to the ventilation of the kitchen, the stove Due to the flame of the burner being agitated, the flame of the stove burner tends to move away from the bottom of the cooking container to the side, and the bottom of the cooking container is cooled by ventilation. The amount of heat input to the stove tends to decrease.
In the state of disturbance generation, the temperature detection unit is heated by the flame, and the detection temperature tends to be high.

As a result, in the third heat treatment, that is, in the state where the control burner is continuously heated by the strong side thermal power, after the change in the detection temperature detected by the temperature detection unit reaches the equilibrium temperature in the equilibrium state where the change is small, When continuing until the thermal power switching temperature set based on the equilibrium temperature is reached, in the disturbance generation state, the change in the detection temperature detected by the temperature detection unit is at an earlier stage than the original equilibrium state. A state in which the temperature gradually rises appears in a state close to the equilibrium state.

Therefore, in the disturbance generation state, in the third heat treatment, the change in the detection temperature detected by the temperature detection unit reached the equilibrium temperature in the equilibrium state, which was earlier than the normal state in which no abnormal ventilation occurred. There is a possibility that it is determined to be in a state, and therefore, the third heat treatment is completed earlier than the normal state in which abnormal ventilation does not occur, and subsequently, the state in which the heating of the control burner is continued to the weak side thermal power is performed. The fourth heat treatment, which continues until the set time elapses, and the state where the stove burner is continued to be heated by the strong side thermal power, are continued until the detection temperature reaches the heating end temperature set based on the equilibrium temperature. 5 There is a risk that good rice cooking cannot be performed due to the heat treatment being performed.

That is, in the disturbance generation state, the equilibrium temperature in the equilibrium state is before the detection temperature detected by the temperature detection unit is determined to reach the equilibrium temperature in the equilibrium state in the normal state in which abnormal ventilation does not occur. As a result of the heat treatment of rice cooking being performed in the state where it is determined that the temperature has reached, the heat treatment is completed with water remaining inside the cooking container, and the rice cooking is performed in a state where the amount of heating is insufficient. There was a risk that the heat treatment would end.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a cooking cooker capable of satisfactorily cooking rice even in a state of disturbance.

The cooking cooker of the present invention has a stove burner that heats the bottom of the cooking container and can adjust the heating power, a temperature detector that detects the bottom temperature of the cooking container, and heating of the stove burner for cooking rice. An operation control unit is provided to control
The first operation control unit starts heating the stove burner with a strong side thermal power as a heat treatment for cooking rice, and then continues the heating state until the temperature detection unit detects a set reference temperature. The state of continuing the heating of the stove burner with the heat treatment and then the weak side heating power is continued until the elapsed time for setting the elapsed time from the start of the heating to the set reference temperature becomes shorter. After reaching the equilibrium temperature at which the detection temperature detected by the temperature detection unit reaches the equilibrium state, the state where the heating of the stove burner is continued by the strong side thermal power is followed by the second heat treatment. The third heat treatment that continues until the thermal power switching temperature set based on the equilibrium temperature is reached, and then the state that the heating of the stove burner is continued by the weak side thermal power is continued until the set time elapses. 4 Heat treatment, followed by a fifth heat treatment in which the state of continuing the heating of the stove burner with the strong side thermal power is continued until the detected temperature reaches the heating end temperature set based on the equilibrium temperature. It is configured to be executed sequentially, and its characteristic configuration is
A disturbance generation detection unit is provided to detect that the stove burner is in a disturbance generation state in which abnormal ventilation is occurring.
When the disturbance generation state is detected, the operation control unit determines the determination condition for determining the equilibrium state based on the detection result of the disturbance generation detection unit, as compared with the case where the disturbance generation state is not detected. The point is that it is configured to determine the equilibrium state in a strict form.

That is, when the operation control unit detects that the disturbance generation detection unit is in a disturbance generation state in which abnormal ventilation is generated in the stove burner, the discrimination condition for determining the equilibrium state is the disturbance. Since the equilibrium state is determined in a form that is stricter than when the generation state is not detected, the disturbance generation state in which abnormal ventilation occurs to the stove burner and the stove burner In any of the normal states where abnormal ventilation does not occur, rice cooking can be performed satisfactorily while appropriately determining the equilibrium state.

That is, the discriminant condition for discriminating the equilibrium state becomes stricter when the disturbance generation state is detected than when the disturbance generation state is not detected. Therefore, during the execution of the third heat treatment, the temperature detection unit As a change in the detected detection temperature, even if a state in which the temperature gradually rises near the equilibrium state occurs, the detection temperature is avoided while avoiding that the state in which the slowly rising detection temperature rises is determined to be in the equilibrium state. When the change of is in a state corresponding to the original equilibrium state, it can be determined as an equilibrium state, so that rice cooking can be performed satisfactorily while appropriately determining the equilibrium state.

Further, since the discrimination condition for discriminating the equilibrium state is not stricter than necessary when the disturbance generation state is not detected in the normal state, the detection temperature detected by the temperature detection unit during the execution of the third heat treatment. When the change in the temperature is small, it can be appropriately determined that the rice is in an equilibrium state. Therefore, the determination of the equilibrium state is delayed, and it is possible to cook rice satisfactorily while avoiding troubles such as scorching. ..

In short, according to the characteristic configuration of the cooking cooker of the present invention, it is a point to provide a cooking cooker capable of satisfactorily cooking rice even in a state of disturbance.

A further characteristic configuration of the cooking device of the present invention is that when the disturbance generation detection unit has a difference between the set reference temperature and the detected temperature when the duration has elapsed is larger than the set value, the above-mentioned The point is that it is configured to be in a state of disturbance.

That is, the detection temperature detected by the temperature detection unit when the duration elapses, that is, the detection temperature detected by the temperature detection unit when the second heat treatment is completed is cooking in the disturbance generation state. Due to the fact that the bottom of the container is cooled by ventilation and the like, the temperature tends to be significantly lower than in the normal state where abnormal ventilation does not occur in the stove burner.

That is, since the second heat treatment heats the bottom of the cooking container with the weak side heating power, the detection temperature detected by the temperature detection unit is higher than the set reference temperature by executing the second heat treatment. However, in the state of disturbance, the bottom of the cooking container is cooled by ventilation, and the temperature tends to decrease more than when the state of disturbance is not detected.

Therefore, the difference between the set reference temperature corresponding to the target temperature when the first heat treatment is executed and the detection temperature detected by the temperature detection unit when the elapsed time has elapsed is that abnormal ventilation is generated in the stove burner. In the generated disturbance state, the difference is larger than in the normal state where abnormal ventilation does not occur in the stove burner. Therefore, the set value for determining whether or not the difference corresponds to the disturbed state. By comparing the differences, if the difference is larger than the set value, it can be accurately detected that the disturbance has occurred.

In short, according to the further characteristic configuration of the cooking device of the present invention, the disturbance generation state can be accurately detected.

A further characteristic configuration of the heating cooker of the present invention is that the temperature after the set standby time from the time when the discriminant condition becomes the boiling state in which the rate of increase of the detected temperature decreases is set as the equilibrium reference temperature, and then the set equilibrium. Setting for each determination time When the number of times the detection temperature is within the permissible range set based on the equilibrium reference temperature is equal to or greater than the set number of times, it is a condition for determining the equilibrium state.
The operation control unit sets the set equilibrium determination time longer when the disturbance generation state is detected than when the disturbance generation state is not detected, and sets the permissible range by the disturbance generation state. The point is that when it is detected, it is configured to be narrower than when the disturbance generation state is not detected.

That is, as a discrimination condition for discriminating the equilibrium state, the temperature after the set standby time from the time when the temperature rise rate of the detection temperature becomes a boiling state is set as the equilibrium reference temperature, and then the set equilibrium judgment time is set a plurality of times. When the number of times the detection temperature is within the permissible range set based on the equilibrium reference temperature is equal to or greater than the set number of times, it is a condition that the state is in equilibrium. Therefore, even if the detection temperature may fluctuate due to various factors. , The equilibrium state can be detected accurately.

Then, the operation control unit sets the set equilibrium determination time longer when the disturbance generation state is detected than when the disturbance generation state is not detected, and sets the permissible range to the disturbance generation state. Sometimes, by making it narrower than when the disturbance occurrence state is not detected, the discrimination condition for determining the equilibrium state is made stricter when the disturbance occurrence state is detected than when the disturbance occurrence state is not detected. Therefore, the equilibrium state can be appropriately determined in both the disturbance state in which the stove burner is abnormally ventilated and the normal state in which the stove burner is not abnormally ventilated.

That is, by adjusting both the set equilibrium determination time and the permissible range, the determination condition for determining the equilibrium state is made stricter when the disturbance generation state is detected than when the disturbance generation state is not detected. The equilibrium state can be appropriately determined in both a disturbance state in which abnormal ventilation is generated in the stove burner and a normal state in which abnormal ventilation is not generated in the stove burner.

In short, according to the further characteristic configuration of the cooking device of the present invention, in both the disturbance generation state in which the stove burner is abnormally ventilated and the normal state in which the stove burner is not abnormally ventilated. , The equilibrium state can be properly determined.

A further characteristic configuration of the cooking device of the present invention is that the operation control unit is configured to determine the boiling state as a state in which the time for the detection temperature to rise to the set temperature is equal to or longer than the set time. It is in.

That is, since the boiling state is determined as a state in which the time for the detection temperature to rise is equal to or longer than the set time, the rate of rise in the detection temperature of the temperature detection unit is increased by sufficiently lengthening the set time. A state in which the temperature is sufficiently lowered is determined as a boiling state.
That is, for example, by setting the set temperature to 1 ° C. and setting the set time to 40 seconds, which is sufficiently long, a state in which the rate of increase in the detection temperature of the temperature detection unit is sufficiently reduced can be determined as a boiling state.

As described above, by discriminating the state in which the rate of increase in the detection temperature is sufficiently lowered as the boiling state, the boiling state can be accurately discriminated, and as a result, the equilibrium state can be discriminated more accurately.

In short, according to the further characteristic configuration of the cooking device of the present invention, the equilibrium state can be determined more accurately.

It is the schematic which shows the structure of the gas stove. It is a figure which shows the outline of rice cooking. It is a figure which shows the outline of the rice cooking in the state of the disturbance occurrence. It is a figure which shows the outline of rice cooking when the discrimination condition is not changed. It is a flowchart which shows the control operation of rice cooking.

[Embodiment]
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(Overall composition of gas stove)
FIG. 1 illustrates a stove burner 1 provided in a built-in type or table type gas stove GC, in which a cooking container J such as a pot or a frying pan is placed on the trivet 2, and the stove burner 1 is placed on the trivet 2. It is configured to heat the placed cooking container J.
In the illustration, a pot for cooking rice is illustrated as the cooking container J.

By the way, the illustrated stove burner 1 is a gas stove GC provided with left and right stove burners on the front side of the top plate and one stove burner on the rear side of the top plate, and is provided on the rear side of the top plate. It is a burner that has a smaller maximum and minimum thermal power than the left and right stove burners provided on the front side of the top plate.

The stove burner 1 includes a cylindrical burner main body 1A and a burner mixing tube 1B connected to the burner main body 1A, and a flame hole is formed in the burner main body 1A along the circumferential direction. There is.
Then, when the fuel gas is injected from the injection nozzle 3 into the burner mixing pipe portion 1B, the primary air is introduced into the burner mixing pipe portion 1B, and the mixed gas of the fuel gas and the primary air is ejected from the flame hole to be primary. It is configured to burn and the air around the burner main body 1A is introduced as secondary air by the primary combustion to perform secondary combustion.

In the gas supply path 4 that supplies the fuel gas to the injection nozzle 3, the flow rate of the fuel gas is adjusted by driving the original gas valve 5 that interrupts the supply of the fuel gas and the stepping motor 6M to adjust the heating amount (thermal power). A gas amount adjusting valve 6 (an example of a thermal power adjusting unit) for adjusting is provided.
The detection information of the rotation angle sensor 6s for detecting the opening degree of the gas amount adjusting valve 6 is configured to be input to the operation control unit H described later.

By the way, the thermal power of the stove burner 1 can be adjusted steplessly by the gas amount adjusting valve 6, but in the present embodiment, the thermal power of the stove burner 1 has three stages of high thermal power, medium thermal power, and small thermal power. It will be explained as being adjusted to.
In the present embodiment, the strong side thermal power in the heat treatment of rice cooking described later corresponds to the medium thermal power, and the weak side thermal power corresponds to the small thermal power.

At the center of the stove burner 1, a temperature sensor 7 (an example of a temperature detection unit) that contacts the bottom wall of the cooking container J placed on the trivet 2 and detects the bottom temperature of the cooking container J is provided in the burner body. It is provided in a posture of penetrating 1A, and the detection temperature T of the temperature sensor 7 is input to the operation control unit H, which will be described later.
Further, the stove burner 1 is equipped with a spark plug P and an ignition sensor R configured by using a thermocouple.

An operation control unit H that controls the operation of the stove burner 1 is provided, and the operation control unit H operates the opening / closing operation of the original gas valve 5, the opening / closing operation of the gas amount adjusting valve 6, and the ignition of the spark plug P. It is configured to execute the ignition process and the fire extinguishing process of the stove burner 1 and execute the thermal power adjustment process while controlling the operation.
That is, the operation control unit H is configured to control the heating of the stove burner 1 for cooking rice, which will be described later.

A point fire extinguishing command unit 8 that commands an ignition command and a fire extinguishing command of the stove burner 1 and a setting operation unit U (an example of a cooking mode setting unit) that commands an automatic cooking mode are provided.
Then, when the operation control unit H is in a state where the automatic cooking mode is set by the setting operation unit U and the ignition command is commanded by the point fire extinguishing command unit 8, the set automatic cooking mode is set. Is configured to run.

That is, when the operation control unit H is commanded by the ignition command unit 8 in the state where the automatic cooking mode is set, the main gas valve 5 and the gas amount adjusting valve 18 for the stove are operated to operate the stove. A state in which fuel gas corresponding to ignition thermal power (for example, medium thermal power) is supplied to the burner 1, and ignition processing for operating the spark plug P is executed until ignition is detected by the ignition sensor R, and then ignition processing is executed. The set automatic cooking mode will be executed.
When a fire extinguishing command is commanded by the point fire extinguishing command unit 8 for the purpose of interrupting cooking in the automatic cooking mode, the main gas valve 5 is operated in the closed state to extinguish the stove burner 1. The process will be executed.

(Details of setting operation unit)
The setting operation unit U is configured to be able to set a rice cooking mode for cooking rice, a water boiling mode, and a temperature setting mode as the automatic cooking mode.
That is, the setting operation unit U has a menu switch 10 for switching and selecting each time the rice cooking mode, the boiling mode, and the temperature setting mode are pressed, and the cooking mode display unit 11 lights up when the rice cooking mode is selected. A lamp 11a, a water heater lamp 11b that lights up when the water heater mode is selected, and a temperature setting lamp 11c that lights up when the temperature setting mode is selected are provided. By operating the menu switch 10, the rice cooking mode, the water heater mode, and the temperature are provided. It is configured so that the setting mode can be selected.

Further, in the setting operation unit U, a temperature display unit 12t for displaying the set set temperature (target heating temperature) and a time display unit 12h for displaying the set set time (target heating time) are arranged one above the other. A changeover switch 14 is provided to switch between a state in which the set temperature (target heating temperature) is changed and a state in which the set time (target heating time) is changed and set by the display unit 12, the increase / decrease switch 13, and the increase / decrease switch 13. Further, a cancel switch 15 for canceling various set information is provided.
Hereinafter, in the present embodiment, the rice cooking mode among the rice cooking mode, the water boiling mode, and the temperature setting mode will be described, and the description of the water boiling mode and the temperature setting mode will be omitted.

(Overview of rice cooking mode)
When the rice cooking mode is set, the operation control unit H is configured to sequentially execute the following first heat treatment to fifth heat treatment as the heat treatment for cooking rice, as shown in FIG. ..
That is, the operation control unit H starts heating the stove burner 1 with the strong side thermal power (medium thermal power), and then continues the heating state until the temperature sensor 7 detects the set reference temperature (for example, 95 ° C.). Perform the first heat treatment.

Subsequently, the state in which the heating of the stove burner 1 is continued with the weak side thermal power (small thermal power) is continued until the elapsed time from the start of heating to the set reference temperature becomes shorter as the elapsed time elapses. A second heat treatment is performed.

Subsequently, the state in which the control burner 1 is continuously heated by the strong side thermal power (medium thermal power) reaches the equilibrium temperature at which the change in the detected temperature detected by the temperature sensor 7 becomes a small equilibrium state, and then the equilibrium A third heat treatment that continues until the thermal power switching temperature set based on the temperature is reached is executed.
Subsequently, the fourth heat treatment is executed in which the heating of the stove burner 1 is continued with the weak side thermal power (small thermal power) until the set time elapses.

Subsequently, the fifth heating in which the heating of the stove burner 1 is continued by the strong side thermal power until the detection temperature detected by the temperature sensor 7 reaches the heating end temperature set based on the equilibrium temperature. Execute the process.
That is, when the detection temperature of the temperature sensor 7 reaches the heating end temperature set based on the equilibrium temperature, the stove burner 1 is extinguished and the fifth heat treatment is completed.

In the present embodiment, when the elapsed time is less than 200 seconds, the duration is set to 10 minutes, and when the elapsed time is 200 seconds or more and less than 250 seconds, the duration is set to 8 minutes. If the elapsed time is 250 seconds or more and less than 300 seconds, the duration is set to 6 minutes, and if the elapsed time is 300 seconds or more and less than 350 seconds, the duration is set to 4 minutes and the elapsed time. If is 350 seconds or more, 2 minutes is set as the duration.
The relationship between the elapsed time and the duration can be variously changed according to the specific configuration of the stove burner 1.

Further, in the present embodiment, the thermal power switching temperature and the heating end temperature are set to the same temperature, and are set to a temperature obtained by adding 20 ° C. to the equilibrium temperature.
By the way, for example, the thermal power switching temperature is set to a temperature obtained by adding 20 ° C to the equilibrium temperature, and the heating end temperature is set to a temperature obtained by adding 30 ° C to the equilibrium temperature. It may be set to a different temperature.
When the operation control unit H detects the equilibrium state, the operation control unit H sets the combustion stop temperature by adding the set safety temperature (for example, 50 ° C.) to the equilibrium temperature, and by any chance, the detection temperature of the temperature sensor 7 becomes the combustion stop temperature. Then, it is configured to forcibly stop the combustion of the controller 1.

In the present embodiment, the discrimination condition for discriminating the equilibrium state is the equilibrium reference temperature, which is the temperature after the set standby time (for example, after 15 seconds) from the time when the temperature rise rate of the temperature sensor 7 is lowered to the boiling state. After that, the detection temperature set multiple times (for example, 5 times) for each set equilibrium determination time (for example, every 10 seconds) was set within the permissible range (reference temperature plus 3 ° C.) set based on the equilibrium reference temperature. When the number of times the temperature is below the upper limit temperature and above the lower limit temperature obtained by subtracting 3 ° C. from the set temperature is greater than or equal to the set number of times (for example, 4 times or more), it is set as a condition for determining the equilibrium state.

Further, the operation control unit H is configured to determine the boiling state as a state in which the detection temperature of the temperature sensor 7 rises by a set temperature (for example, 1 ° C.) for a set time or longer (for example, 40 seconds or longer). Has been done.

(About the state of disturbance)
The operation control unit H determines the equilibrium state based on the detection result of the disturbance generation detection unit Q that detects that the stove burner 1 is in a disturbance generation state in which abnormal ventilation is occurring. It is configured to discriminate the above-mentioned equilibrium state in a form that makes the state of occurrence of disturbance more severe when the state is detected than when the state of disturbance is not detected.

In the present embodiment, the operation control unit H sets the set equilibrium determination time longer when the disturbance generation state is detected than when the disturbance generation state is not detected, and sets the permissible range to the disturbance generation state. When it is detected, it is configured to be narrower than when the disturbance occurrence state is not detected.

That is, the set equilibrium determination time is set to, for example, 10 seconds when the disturbance generation state is not detected, and is set to, for example, 11 seconds when the disturbance generation state is detected.
Further, when the disturbance generation state is not detected, the permissible range is set to, for example, the upper limit temperature obtained by adding 3 ° C to the reference temperature and the lower limit temperature obtained by subtracting 3 ° C from the set temperature, and the disturbance occurs. When the state is detected, for example, the temperature is set to be equal to or lower than the upper limit temperature obtained by adding 2 ° C. to the reference temperature and equal to or higher than the lower limit temperature obtained by subtracting 2 ° C. from the set temperature.

In the disturbance generation detection unit Q, the difference between the set reference temperature in the first heat treatment and the detection temperature of the temperature sensor 7 when the duration for executing the second heat treatment elapses is larger than the set value (for example, 30 ° C.). If it is large, it is configured to be in a state of disturbance.
In the present embodiment, the operation control unit H obtains the difference between the set reference temperature in the first heat treatment and the temperature detected by the temperature sensor 7 when the duration for executing the second heat treatment has elapsed, and the difference is obtained. Is larger than the set value (for example, 30 ° C.), it is configured to be in a disturbance generation state.
That is, the operation control unit H is configured to function as the disturbance generation detection unit Q.

It should be noted that the cause of the disturbance generation state in which the stove burner 1 is abnormally ventilated is considered to be the inflow of outside air due to ventilation in the kitchen, the wind of the air conditioner, or the like.
Further, the stove burner 1 corresponds to a stove burner provided on the rear side of the top plate in a gas stove GC having left and right stove burners on the front side of the top plate and one stove burner on the rear side of the top plate. In some cases, it may be generated by the flow of secondary air or combustion gas generated when the left and right stove burners provided on the front side of the top plate are in a combustion state.

FIG. 3 illustrates an outline of heat treatment in rice cooking when the discrimination conditions are strict in a disturbance generation state, and FIG. 4 is an outline of heat treatment in rice cooking when the discrimination conditions are not strict in a disturbance generation state. Is illustrated.
In FIG. 4, when the detection temperature of the temperature sensor 7 gradually rises due to the bottom of the cooking container J being cooled by abnormal ventilation or the like during the execution of the third heat treatment, the cooking container J is in an equilibrium state. If it is detected, the process shifts to the fourth heat treatment, so that the amount of heating is insufficient.

On the other hand, in FIG. 3, even if the detection temperature of the temperature sensor 7 gradually rises due to the bottom of the cooking container J being cooled by abnormal ventilation or the like during the execution of the third heat treatment. The third heat treatment is continued without being detected as being in an equilibrium state, and after the third heat treatment is sufficiently continued, the equilibrium state is detected and the process proceeds to the fourth heat treatment. Therefore, a sufficient amount of heating can be secured.

That is, even if the heat treatment for cooking rice is started in the state where the disturbance is generated, the rice cooking can be appropriately performed and good cooking can be obtained as in the case where the state where the disturbance is not generated.

(Details of control operation of operation control unit)
Next, the control operation of the operation control unit H in the rice cooking mode will be described based on the flowchart of FIG.
When the rice cooking mode is set, it is first determined whether or not the ignition command is commanded (# 1), and if the ignition command is not commanded, the process waits until the ignition command is commanded.

When it is determined in # 1 that the ignition command is commanded, the stove burner 1 is ignited by the strong side thermal power to execute the first heat treatment (# 2), and then the elapsed time from the start of heating. Is executed (# 3).
Next, it is determined whether or not the detected temperature of the temperature sensor 7 is equal to or higher than the set reference temperature (# 4), and if the detected temperature is not equal to or higher than the set reference temperature, the process proceeds to # 2.

If it is determined in the process of # 4 that the detected temperature is equal to or higher than the set reference temperature, the process of setting the duration for executing the second heat treatment is executed based on the measured elapsed time (#). 5) Subsequently, a second heat treatment for burning the stove burner 1 with a weak side thermal power is executed (# 6).

Next, it is determined whether or not the duration has elapsed (# 7), and if the duration has not elapsed, the process of # 6 is repeated.
If it is determined in the process of # 7 that the duration has elapsed, it is determined whether or not the disturbance has occurred (# 8). That is, when the difference between the set reference temperature in the first heat treatment and the detection temperature of the temperature sensor 7 when the duration for executing the second heat treatment elapses is larger than the set value (for example, 30 ° C.), It is determined that the disturbance is generated, and if the above difference is equal to or less than the set value (for example, 30 ° C.), it is determined that the disturbance is not generated.

Next, a process of setting the discriminant condition is executed in a form in which the discriminant condition for discriminating the equilibrium state based on whether or not the disturbance is generated is set more severely in the disturbance generated state than in the non-disturbed state. (# 9).

Next, a third heat treatment for burning the stove burner 1 with a strong thermal power is executed (# 10), and then it is determined whether or not the equilibrium state has been detected (# 11), and the equilibrium state is set. If it has not been detected, it is determined whether or not it is in an equilibrium state (# 12).

When it is determined in the process of # 12 that the equilibrium state is not reached, the process proceeds to the process of # 10.
Further, when it is determined in the process of # 12 that the state is in equilibrium, the process of setting the thermal power switching temperature and the heating end temperature is executed (# 13), and subsequently, the detection temperature of the temperature sensor 7 is the thermal power. It is determined whether the temperature is equal to or higher than the switching temperature (# 14), and if it is not higher than the thermal power switching temperature, the process proceeds to # 10.
Further, when it is determined in the process of # 11 that the equilibrium state has been detected, the process proceeds to the process of # 14.

When it is determined in the process of # 14 that the detection temperature of the temperature sensor 7 is equal to or higher than the thermal power switching temperature, the fourth heat process of burning the stove burner 1 with the weak side thermal power is executed (# 15). Subsequently, it is determined whether or not the set time has elapsed (# 16), and if it is determined that the set time has not elapsed, the process of # 15 is repeated.

When it is determined in the process of # 16 that the set time has elapsed, the fifth heat process of burning the stove burner 1 with the strong side thermal power is executed (# 17), and then the temperature sensor 7 is executed. It is determined whether or not the detection temperature of is equal to or higher than the heating end temperature (# 18), and if it is not equal to or higher than the heating end temperature, the process of # 17 is repeated.

If it is determined in the process of # 18 that the temperature detected by the temperature sensor 7 is equal to or higher than the heating end temperature, a fire extinguishing process for extinguishing the stove burner 1 is executed (# 19), and the rice cooking is completed.

[Another Embodiment]
Next, another embodiment is listed.
(1) In the above embodiment, the difference between the set reference temperature in the first heat treatment and the detection temperature of the temperature sensor 7 when the duration of executing the second heat treatment elapses is the set value of the disturbance generation detection unit Q. When the temperature is higher than (for example, 30 ° C.), a case where it is determined that a disturbance is generated has been illustrated. For example, the temperature sensor 7 from the start of the second heat treatment to the elapse of the duration. When the downward gradient of the detection temperature is lower than the set gradient, it is determined that the disturbance is generated, and the specific configuration for detecting the disturbance can be changed in various ways.

(2) In the above embodiment, as a discrimination condition for discriminating the equilibrium state, the temperature after the set standby time (for example, after 15 seconds) is set from the time when the temperature rise rate of the temperature sensor 7 is lowered to the boiling state. The equilibrium reference temperature is set, and then the detection temperature set for each set equilibrium determination time (for example, every 10 seconds) is set multiple times (for example, 5 times) within the permissible range (3 ° C. to the reference temperature) set based on the equilibrium reference temperature. When the number of times the temperature is below the upper limit temperature including the above temperature and above the lower limit temperature obtained by subtracting 3 ° C from the set temperature is greater than or equal to the set number of times (for example, 4 times or more), the conditions for determining the equilibrium state are illustrated. The discrimination conditions for discriminating the equilibrium state can be variously changed.

For example, after setting the equilibrium reference temperature, the detection temperature read every set equilibrium determination time (for example, every 10 seconds) is equal to or less than the allowable range set based on the equilibrium reference temperature (upper limit temperature obtained by adding 3 ° C to the reference temperature). And when the temperature reaches the lower limit temperature obtained by subtracting 3 ° C. from the set temperature), it may be determined that the temperature is in equilibrium immediately.

(3) In the above embodiment, there is an example in which the boiling state is determined as a state in which the detection temperature of the temperature sensor 7 rises by a set temperature (for example, 1 ° C.) for a set time or longer (for example, 40 seconds or longer). However, for example, a state in which the detection temperature rise rate (for example, the rise rate every second) is equal to or less than the set value continues for the boiling determination time (for example, several tens of seconds) is set as the boiling state. The specific configuration for determining the boiling state can be changed in various ways.

The configuration disclosed in the above embodiment (including another embodiment, the same shall apply hereinafter) can be applied in combination with the configuration disclosed in other embodiments as long as there is no contradiction. The embodiments disclosed in the present specification are examples, and the embodiments of the present invention are not limited thereto, and can be appropriately modified without departing from the object of the present invention.

1 Stove burner 7 Temperature detection unit H Operation control unit J Cooking container Q Disturbance generation detection unit

Claims (4)

A stove burner that heats the bottom of the cooking container and can adjust the heating power, a temperature detection unit that detects the bottom temperature of the cooking container, and an operation control unit that controls the heating of the stove burner for cooking rice are provided. Be,
The first operation control unit starts heating the stove burner with a strong side thermal power as a heat treatment for cooking rice, and then continues the heating state until the temperature detection unit detects a set reference temperature. The state of continuing the heating of the stove burner with the heat treatment and then the weak side heating power is continued until the elapsed time for setting the elapsed time from the start of the heating to the set reference temperature becomes shorter. After reaching the equilibrium temperature at which the detection temperature detected by the temperature detection unit reaches the equilibrium state, the state in which the heating of the stove burner is continued by the strong side thermal power is followed by the second heat treatment. The third heat treatment that continues until the thermal power switching temperature set based on the equilibrium temperature is reached, and then the state that the heating of the stove burner is continued by the weak side thermal power is continued until the set time elapses. 4 Heat treatment, followed by a fifth heat treatment in which the state of continuing the heating of the stove burner with the strong side thermal power is continued until the detected temperature reaches the heating end temperature set based on the equilibrium temperature. A cooker configured to run sequentially,
A disturbance generation detection unit is provided to detect that the stove burner is in a disturbance generation state in which abnormal ventilation is occurring.
When the disturbance generation state is detected, the operation control unit determines the determination condition for determining the equilibrium state based on the detection result of the disturbance generation detection unit, as compared with the case where the disturbance generation state is not detected. A cooking device configured to determine the equilibrium state in a strict form. When the difference between the set reference temperature and the detected temperature when the duration elapses is larger than the set value, the disturbance generation detection unit is configured to be in the disturbance generation state. The cooking device according to claim 1. As the discrimination condition, the temperature after the set standby time from the time when the temperature rise rate of the detection temperature drops below the set value to the boiling state is set as the equilibrium reference temperature, and then the set equilibrium determination time is set a plurality of times. When the number of times the detection temperature is within the permissible range set based on the equilibrium reference temperature is equal to or greater than the set number of times, it is a condition for determining the equilibrium state.
The operation control unit sets the set equilibrium determination time longer when the disturbance generation state is detected than when the disturbance generation state is not detected, and sets the permissible range by the disturbance generation state. The cooker according to claim 1 or 2, wherein when it is detected, it is configured to be narrower than when the disturbance generation state is not detected. The cooker according to claim 3, wherein the operation control unit determines the boiling state as a state in which the time for the detection temperature to rise to the set temperature is equal to or longer than the set time.

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