JP2014105961A - Heating cooker - Google Patents

Abstract

The present invention provides a heating cooker that can be cooked automatically regardless of the material of a cooking container such as a pan.
Attention is paid to the fact that the temperature of the object to be heated in the cooking container is substantially the same at the equilibrium temperature at which the detected temperature of the cooking container to be heated is in an equilibrium state even if the material of the cooking container is different. When the stewed cooking mode is set, after the equilibrium temperature Tα is detected, when the detected temperature of the cooking container rises to the first set temperature T1 lower than the equilibrium temperature Tα, the heating power of the heating means is weakened. When the temperature drops to the second set temperature T2 lower than the first set temperature T1, the heating power of the heating means is switched to a stronger heating power, and the temperature of the cooking container is set to the first and second lower than the equilibrium temperature. The temperature is controlled based on the set temperature.
[Selection] Figure 5

Description

  The present invention relates to a cooking device, and more particularly to a cooking device suitable for stewed cooking.

  Conventionally, the temperature of the cooking container is detected by a temperature sensor and heating by the heating means is automatically stopped based on the detected temperature in order to prevent scorching and ignition due to overheating of the food in a cooking container such as a pan. Or detecting the boiling state of the cooked food based on the detected temperature of the cooking container, and detecting an equilibrium state where the heating amount by the heating means and the heat radiation amount of the cooking food and the cooking container are balanced. There has also been proposed a heating cooker that discriminates between a water cooked product and an oil cooked product and prevents the water cooked product from being burnt (see, for example, Patent Document 1).

JP-A-6-129644

  In stewed cooking such as `` oden '' and `` meat potatoes '', the amount of heat required to boil the soup varies depending on the material of the cooking pot and the cooking ingredients. That is, the heating amount cannot be fixed unconditionally.

  For this reason, the conventional cooking device has a function to prevent scorching and ignition due to overheating of the food as described above, but when performing stewed cooking, while the user is monitoring by the side, It is necessary to boil the cooked food while manually adjusting the heating power so that the boiling of the cooked food in the container is heated with a strong heating power until boiling, and if it boils, it will not blow down.

  Thus, with conventional cooking devices, in the case of stewed cooking, the user must manually adjust the heating power while monitoring by the side so as not to blow down, and it takes time and effort. In order to adjust the thermal power according to the experience or intuition of the person, there is a drawback that it is difficult to obtain an appropriate thermal power.

  The present invention has been made paying attention to such a situation, and an object of the present invention is to provide a cooking device capable of automatically cooking by boiling regardless of the material of the cooking container.

  In order to achieve the above object, the present invention is configured as follows.

   (1) The present invention controls the heating means based on the heating means for heating the cooking container, the temperature detection means for detecting the temperature of the cooking container, and the detected temperature detected by the temperature detection means. A cooking mode setting means for setting a stewed cooking mode, and the control means is an equilibrium temperature at which the detected temperature is in an equilibrium state when the stewed cooking mode is set. When the detected temperature falls to a second set temperature lower than the equilibrium temperature, the detected temperature is lower than the equilibrium temperature, with the heating power of the heating means being increased. When the temperature rises to a first set temperature higher than the second set temperature, the heating power of the heating means is switched to a weaker heating power.

  In the present invention, attention is paid to the fact that the temperature of the object to be heated in the cooking container is substantially the same at the equilibrium temperature at which the detected temperature of the cooking container to be heated is in an equilibrium state even if the material of the cooking container is different. When the stew cooking mode is set, after detecting the equilibrium temperature, when the detected temperature of the cooking container is lowered to the second set temperature lower than the equilibrium temperature, the heating power of the heating means is increased to a higher heating power, When the temperature rises to the first set temperature that is lower than the equilibrium temperature and higher than the second set temperature, the heating power of the heating means is switched to a weaker heating power, so the temperature of the cooking container is lower than the equilibrium temperature. The temperature range is controlled based on the first and second set temperatures.

  As a result, the object to be heated in the cooking container can be heated while maintaining a light boiling state without being blown down, and the heating power can be manually controlled while monitoring so that the user does not blow down as in the past. There is no need to adjust, and stewed cooking can be performed automatically.

   (2) In a preferred embodiment of the present invention, the temperature detection means detects the temperature of the bottom of the cooking container, and the control means heats the heating means until the equilibrium temperature is detected. While the force is controlled to the first heating power, after the equilibrium temperature is detected, the power is switched to the second heating power weaker than the first heating power, and the detected temperature reaches the second set temperature. When the temperature falls, the second heating power is switched to a third heating power which is stronger than the second heating power and equal to or weaker than the first heating power. When the detected temperature rises to the first set temperature, the second heating power is changed. After that, every time the detected temperature falls to the second set temperature or rises to the first set temperature, the control is switched to the third heating force or the second heating force.

  According to this embodiment, after the equilibrium temperature is detected, the heating power by the heating means is controlled to be switched between the second heating power and the third heating power, and the detected temperature at the bottom of the cooking container is balanced. It will be controlled to the temperature range based on the 1st and 2nd preset temperature lower than temperature, and it can heat, maintaining the light boiling state, without the heating target object in a cooking vessel blowing down.

  (3) In another embodiment of the present invention, the cooking mode setting means has a timer setting unit for setting a cooking time in the stew cooking mode, and the control means is set in the timer setting unit. The timer measuring unit that measures the cooking time, and the cooking time measurement by the timer measuring unit when the boiling temperature at which the heating object in the cooking container is in a boiling state is detected based on the detected temperature. To start.

  According to this embodiment, when the cooking time in the stew cooking mode is set by the timer setting unit, the detection time point of the boiling temperature at which the object to be heated in the cooking container is in a boiling state, which is the time when the stew is substantially started. Timer measurement can be started as a starting point.

  (4) In another embodiment of the present invention, the cooking mode setting means has a change setting unit for changing and setting the first and second set temperatures.

  According to this embodiment, since the first and second set temperatures can be changed and set by the change setting unit, for example, the first and second temperatures can be set according to the kind of stewed cooking and the amount of the heating object in the cooking container. By changing the set temperature, the detected temperature of the cooking container can be controlled to an appropriate temperature range based on the first and second set temperatures.

  (5) In still another embodiment of the present invention, the control means is configured so that the stewed cooking mode is set and the equilibrium temperature is detected and then heating by the heating means is continued. When the detected temperature falls to a predetermined temperature lower than the second set temperature, the equilibrium temperature is detected again and the first and second set temperatures are reset.

  In the middle of the stewed cooking mode, when the heating object is additionally charged to the cooking container, the detection temperature of the cooking container is lowered, but according to this embodiment, the heating object is additionally charged in large quantities, When the detected temperature of the cooking container is lowered to a predetermined temperature lower than the second set temperature, the equilibrium temperature is detected again and the first and second set temperatures are reset, so that the temperature of the cooking container is heated. The temperature is controlled to an appropriate temperature range based on the first and second set temperatures reset according to the additional input of the object.

  Thus, according to the present invention, when the stew cooking mode is set, the equilibrium temperature is detected, and the detected temperature of the cooking container is within a temperature range based on the first and second set temperatures lower than the equilibrium temperature. Because it is controlled, regardless of the material of the cooking container, the object to be heated can be heated so as to maintain a lightly boiled state without blowing from the cooking container. It is not necessary to manually adjust the heating power while monitoring so that the cooking is not performed, and stewed cooking can be performed automatically.

It is a perspective view of the cooking-by-heating machine concerning one embodiment of the present invention. It is explanatory drawing of the fuel supply path of the heating cooker of FIG. It is a front view of the cooking setting input part for gas stoves. It is a figure which shows the temperature change of each pan at the time of heating the pan from which a material differs, and the change of the water temperature in each pan. It is a figure which shows the thermal power of the stew cooking mode by the heating cooker of one Embodiment of this invention, and the temperature change of a pan. It is a figure corresponding to FIG. 5 at the time of adding the heating target object in the middle of the stew cooking mode. It is a figure corresponding to FIG. 5 which shows the other example at the time of adding the heating target object in the middle of the stew cooking mode.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings.

  In this embodiment, description will be made by applying to a gas stove with a grill as a heating cooker.

  As shown in FIG. 1, the gas stove A with a grill according to this embodiment includes three gas stove portions 2 a to 2 c made of a stove burner having different maximum heating power at the top of the stove body 1. The grill 3 is provided with a grill burner (not shown) and a grill pan (not shown) equipped with a grill door 3a on the front side.

  This gas stove A with a grill is a built-in type that is dropped into a kitchen cabinet (not shown).

  The upper portion of the stove body 1 is covered with a top plate 4 and a grill exhaust port 5 for discharging combustion exhaust gas from the grill 3 is provided on the upper surface of the stove rear end.

  In this embodiment, one (left side) of the gas stove parts 2a, 2b disposed on the left and right sides of the front side of the top plate 4 is a standard heating power gas stove part 2a, and the other (right side) is a high heating power gas stove. It is part 2b. Moreover, the gas stove part 2c arrange | positioned in the center part of the back | inner side is the gas stove part 2c of small thermal power. Each gas stove section 2a to 2c is equipped with a temperature sensor 7a to 7c comprising a thermistor for detecting the temperature of the cooking container, for example, the bottom of the pan, and the corresponding virtues 6a to 6c are respectively mounted. .

  Although not shown, each gas stove section 2a to 2c is provided with an ignition plug as an ignition device for igniting the burner and a thermocouple as an ignition detection device for detecting the ignition of the burner. Similarly, an ignition plug as an ignition device for igniting the grill burner and a thermocouple as an ignition detection device for detecting the ignition of the grill burner are provided. The ignition plug is ignited by a control unit 11 (see FIG. 2) composed of a microcomputer by an ignition operation in heating state adjusting units 12a to 12c to be described later, and ignition (ignition) information detected by the thermocouple is controlled by the control unit. 11, the control unit 11 ends the ignition process with the spark plug.

  As shown in FIG. 2, a branch supply path 8a that branches from a fuel supply path 8 that supplies a gas fuel such as city gas is connected to each burner and grill burner. In FIG. 2, only the stove burner of the gas stove unit 2a is representatively shown. The fuel supply path 8 is provided with an electromagnetic valve 9, and each branch supply path 8a is driven by a stepping motor to adjust the amount of gas fuel supplied, so that the valve opening position can be finely adjusted. A flow rate control valve 10 and a position sensor (not shown) for detecting the opening position of the valve body are provided. The electromagnetic valve 9 and the flow rate control valve 10 are controlled by the control unit 11, and the detection information in the position sensor is recognized and processed by the control unit 11. Further, the flow control valve 10 is switched so that the flow rate becomes zero and the shut-off state is established when the corresponding stove burner or grill burner is not used.

  As shown in FIG. 1, three heating state adjusting units 12 a to 12 c for performing operations of ignition, extinguishing, and heating power adjustment of the stove burners of the gas stove units 2 a to 2 c are respectively provided on the left and right upper portions of the front surface of the stove body 1. Is provided. In this embodiment, the heating state adjusting unit 12a of the gas stove unit 2a of the standard thermal power is disposed on the left side of the front surface, and the heating state adjusting unit 12b of the gas stove unit 2b of the high heating power and the gas stove unit of small thermal power are disposed on the right side of the front surface. A heating state adjusting unit 12c of 2c is provided.

  Further, on the upper right side of the front surface is an automatic return type push button that turns on / off power to the control unit 11, the electromagnetic valve 9, the flow control valve 10, the input unit, the heating state adjusting units 12a to 12c, and the like. A power switch 13 of the type is provided.

  Each of the heating state adjusting units 12a to 12c is composed of a push button that is movable in the front-rear direction. When the gas stove units 2a to 2c are used, the heating state adjusting units 12a to 12c are pressed to perform an ignition operation. As a result, the retreated heating state adjusting parts 12a to 12c protrude forward, the instrument plug is turned on, and the discharged gas fuel is sparked and ignited in the gas burners 2a to 2c.

  When the heating state adjusting units 12a to 12c formed by the push buttons protrude forward, the heating state adjusting units 12a to 12c are picked up with a finger and rotated, and the rotation angle is detected by the rotary encoder and is sent to the control unit 11. The valve body of the flow rate control valve 10 is driven by the stepping motor to be recognized and the gas flow rate is controlled so that the opening position according to the rotation angle is reached, and the heating power of the gas stove parts 2a to 2c is "1". It is possible to control in five stages of “5”. On the other hand, in extinguishing the fire, the appliance plugs are turned OFF by pressing the heating state adjusting units 12a to 12c protruding forward, and the stove burners of the gas stove units 2a to 2c are extinguished.

  Operation panels 14 and 15 are provided in the left and right lower portions of the front surface of the stove body 1 so as to be retractable. The right operation panel 15 is provided with a grill cooking setting input unit 16 for performing operations relating to the grill 3, and this operation panel 15 serves as a grill side operation panel, and the left operation panel 14 includes a gas stove with a standard thermal power. A gas stove cooking setting input unit 17 for inputting cooking settings by the unit 2a is provided, and the operation panel 14 is a stove side operation panel.

  FIG. 3 shows a gas stove cooking setting input unit 17. The gas stove cooking setting input unit 17 for inputting the cooking setting by the gas stove unit 2a of the standard fired power is a timer switch 18 for setting the cooking time by the gas stove unit 2a, fried food, rice cooking, boiling water, automatic cooking of stew Menu switches 19 to 22 for setting menus and a cancel switch 23 for canceling each input set by operating the switches 18 to 22 are provided.

  By pressing the "+" switch 18a and the "-" switch 18b of the timer switch 18 as a timer setting unit, the timer time from 1 minute to 120 minutes can be set in units of 1 minute, and the set timer time Is displayed on the display unit 18c. If the timer time is not set, 60 minutes is displayed as the initial setting value. During execution of the set cooking mode, the display unit 18c displays the remaining time in minutes that is decremented with the passage of 1 minute until the remaining time reaches 1 minute. When the remaining time is less than minutes, the value of “1 minute” is displayed until the remaining time reaches 30 seconds. When the remaining time becomes 30 seconds or less, a buzzer is notified and the time is decremented as time passes by 1 second. The remaining time in seconds is displayed, and when the remaining time becomes 0, “0” blinks 10 times, the gas stove 2a is extinguished, and the set cooking mode is ended.

  During the cooking mode in which the timer time is set, the timer time setting can be changed by pressing the “+” switch 18a or the “−” switch 18b of the timer switch 18, and the maximum settable time is It is up to 120 minutes, and the continuous usable time of the gas stove 2a is up to 120 minutes.

  Of the above-mentioned automatic cooking menu switches 19 to 22, the fried food menu switch 19 can be pressed to make a fried food mode in which the fried food is automatically cooked. Depending on how many times the fried food menu switch 19 is pressed. Fried food cooking at a target temperature can be set from a plurality of types of fried food cooking such as 200 ° C., 180 ° C., and 160 ° C. Moreover, it can be set as the rice cooking mode which cooks rice by automatic cooking by pushing the menu switch 20 for rice cooking, and cooking of various kinds of rice cooking such as rice and rice porridge is made by how many times this menu switch 20 for rice cooking is pushed. The cooking of the target cooking rice can be set from the inside. Also, by pressing the menu switch 21 for boiling water, it is possible to enter a water heating mode in which the water heating is performed by automatic cooking. Depending on how many times the menu switch 21 for water heating is pressed, automatic fire extinguishment, immediately after boiling such as 5 minutes heat retention. It is possible to select and set a water heater such as whether to extinguish the fire or keep it warm for a certain period of time.

  Furthermore, in this embodiment, it is possible to set a stew cooking mode in which the stew is performed by automatic cooking by pressing the menu switch 22 for stew. Each time the menu switch 22 for stew is pressed, the stew heating power is “standard”. ”(Oden, roll cabbage, etc.) →“ Strong ”(when meat potato or Chikuzen boiled, when the amount is large) →“ Weak ”(when miso soup or when the amount is small), etc. Can be set. By selecting and setting the “standard”, “strong”, and “weak”, it is possible to change and set the first and second set temperatures for controlling the heating power as described later.

  The stew menu switch 22 and the timer switch 18 constitute cooking mode setting means for setting the stew cooking mode.

  When the cooking setting input by the gas stove unit 2a of the standard heating power is performed in the gas stove cooking setting input unit 17, the heating power adjustment, the cooking time, etc. in the gas stove unit 2a are determined based on the control content preset by the control unit 11. Be controlled. In this case, the temperature of the bottom of the pan is detected by the temperature sensor 7a, and the temperature of the bottom of the pan detected by the temperature sensor 7a is input to the control unit 11 to adjust the thermal power by feedback control. . The control unit 11 also has a function as a timer measurement unit that measures the timer time set by the timer switch 18.

  In using the gas stove units 2a to 2c, when heating is performed manually, the controller 11 is instructed by directly operating the heating state adjusting units 12a to 12c exposed on the front surface of the stove body 1 with a finger. In addition to performing ignition, heating power adjustment, and fire extinguishing, and performing automatic cooking with the gas stove unit 2a of standard heating power, the gas flow rate and heating power are mainly adjusted by the control unit 11 as described later.

  In addition, the automatic cooking may be extinguished when an abnormality is detected by the end of automatic cooking, the timer function, or the safety device. In this case, the ignition / fire extinguishing operation unit is in a state where the appliance plug is turned on. However, the safety valve shuts off the fuel gas and extinguishes the fire.

  In this embodiment, regardless of the material of the pan that is a cooking container, when the stew cooking mode is set by pressing the stew menu switch 22, the stew cooking can be performed automatically. Here, the change of the temperature of the pot by the difference in the material of a pot and the temperature of the heating target object in a pot is demonstrated.

  Figure 4 shows the same amount of water as the heating object in a stainless steel (SUS) multi-layer pan with a low heat transfer rate and a large heat capacity, and an aluminum pan with a high heat transfer rate and a small heat capacity. It is a figure which shows the temperature of the bottom part of each pan when it heats with a gas stove part, and the change of the water temperature in each pan, and the horizontal axis shows time (second), and the vertical axis | shaft has shown temperature (degreeC), respectively. . The temperature at the bottom of each pan was detected by a temperature sensor comprising a thermistor provided in the gas stove, and the water temperature of the pan was detected by a temperature sensor attached to the pan.

In FIG. 4, the thick solid line _LSUS indicates the temperature of the bottom of the stainless steel multi-layer pan, the thin solid line L _Al indicates the temperature of the bottom of the aluminum pan, and the thick broken line L _WSUS indicates the inside of the stainless multi-layer pan. The thin broken line L _WAl indicates the water temperature in the aluminum pan.

When heating is started, the temperature L _SUS , L _{Al at} the bottom of each pan and the water temperature L _WSUS , L _WAl in each pan rise, and are described below based on the temperature L _Al at the bottom of the aluminum pan. Thus, it is detected that the water in the pan has boiled. The temperature at the bottom of the aluminum pan at the time when this boiling state is detected is shown as the boiling temperature _TBAl . Then, based on the temperature L _SUS at the bottom of the stainless steel multilayer pot, it is detected boiling state in the same manner, indicating the temperature at the bottom of the stainless steel multilayer pot this time as the boiling temperature T _BSUS.

Further, when the heating is continued, the temperature of the bottom L _SUS, L _Al of each pot stable, first, based on the temperature L _Al at the bottom of the aluminum pan, it became an equilibrium state as described below Next, based on the temperature L _SUS at the bottom of the stainless steel multilayer pan, it is detected that an equilibrium state has been reached in the same manner, and the temperatures L _Al and L _{SUS at} the bottom of each pan at each detection time are detected. Are shown as equilibrium temperatures Tα _Al and Tα _SUS .

  In addition, after detecting an equilibrium state, the switching control of the thermal power similar to the stewed cooking mode of this embodiment mentioned later is performed.

As shown in FIG. 4, the temperatures L _SUS and L _{Al at} the bottom of each pan are different, and the boiling temperatures T _BAl and T _BSUS at the time when the boiling state is detected and the temperatures at the time when the equilibrium state is detected are detected. The equilibrium temperatures Tα _Al and Tα _SUS are also different. In this example, the equilibrium temperature Tα _SUS of the stainless steel multilayer pan is 110 ° C., and the equilibrium temperature Tα _Al of the aluminum pan is 102 ° C.

Thus, while the temperatures L _SUS and L _{Al at} the bottom of each pan are different, the water temperatures L _WSUS and L _WAl of the pans indicated by broken lines are different during the temperature rise, In the vicinity of the equilibrium temperatures Tα _Al and Tα _SUS at which the equilibrium state is detected, the temperatures are substantially coincident with each other and become 100 ° C. That is, at the time of the equilibrium temperature Tα _SUS , Tα _Al at which the equilibrium state is detected based on the temperature L _SUS , L _Al at the bottom of each of the stainless steel multilayer pan and the aluminum pan, the water temperature is It is approximately the same 100 ° C.

  Therefore, in this embodiment, as described later, after detecting the equilibrium state based on the temperature of the bottom of the pan, the equilibrium state was detected in order to maintain a light boiling state while preventing the spilling. Based on the first and second set temperatures slightly lower than the equilibrium temperature, which is the temperature at the time, the heating is switched and controlled, and the temperature at the bottom of the pan is controlled to a temperature range based on the first and second set temperatures It is.

  Specifically, after detecting the equilibrium state, the heating power is weakened, and when the temperature at the bottom of the pan falls to a second set temperature lower than the equilibrium temperature, the heating power is increased and the temperature at the bottom of the pan becomes the second. When the temperature rises to the first set temperature that is higher than the set temperature and lower than the equilibrium temperature, the heating power is weakened again, and when the temperature at the bottom of the pan falls to the second set temperature, the heating power is increased again. , Each time the second set temperature is reached, the heating power is switched to weaker or stronger, thereby controlling the temperature of the bottom of the pan to a temperature range based on the first and second set temperatures lower than the equilibrium temperature. Is.

In the example of FIG. 4, when the equilibrium temperatures Tα _Al and Tα _SUS are detected, a temperature that is 3 ° C. lower than the equilibrium temperatures Tα _Al and Tα _SUS is set as the first set temperature, and 1 ° C. below the first set temperature. The low temperature is set as the second set temperature.

Therefore, in the case of a stainless steel multilayer pan having an equilibrium temperature Tα _SUS of 110 ° C., 107 ° C. (= 110-3) is set as the first set temperature, and 106 ° C. (= 107-1) is set as the second set temperature. When the temperature L _{SUS at} the bottom of the stainless steel pan drops to 106 ° C, the thermal power is strengthened, and when the temperature L _{SUS at} the bottom of the pan rises to 107 ° C, the thermal power is weakened. Each time, the heating power is controlled to be increased or decreased, whereby the temperature _{LSUS at} the bottom of the pan is based on the first and second set temperatures 107 ° C and 106 ° C lower than the equilibrium temperature 110 ° C. Controlled to range.

Similarly, in the case of an aluminum pan having an equilibrium temperature Tα _Al of 102 ° C., 99 ° C. (= 102-3) is the first set temperature and 98 ° C. (= 99-1) is the second set temperature. When the temperature L _{Al at} the bottom of the aluminum pan is lowered to 98 ° C, the heating power is increased, and when the temperature L _{Al at} the bottom of the pan is increased to 99 ° C, the heating power is weakened. Each time, the heating power is controlled to be stronger or weaker, so that the temperature L _{Al at} the bottom of the pan becomes a temperature range based on the first and second set temperatures 99 ° C and 98 ° C lower than the equilibrium temperature 102 ° C. Be controlled.

Thus, after detecting the equilibrium state based on the temperatures L _SUS and L _Al at the bottom of each pan, heating is controlled by the first and second set temperatures based on the respective equilibrium temperatures Tα _SUS and Tα _Al. Therefore, after the equilibrium temperatures Tα _SUS and Tα _Al are detected, the temperatures L _SUS and L _{Al at} the bottom of each pan are controlled in a temperature range lower than the equilibrium temperature. Thus, as shown in FIG. 4, the water temperature L _WSUS, L _WAl of each pot, and it can be seen that maintain the time has elapsed for approximately 900 seconds to approximately 98 ° C..

  The first set temperature is preferably lower than the equilibrium temperature in order to prevent blown down, but if it is too low, it cannot be boiled, so the temperature difference between the equilibrium temperature and the first set temperature is, for example, It is within 7 ° C, preferably within 5 ° C, more preferably within 3 ° C. The temperature difference between the first set temperature and the second set temperature is, for example, within 5 ° C, preferably within 3 ° C, and more preferably within 1 ° C. However, the said temperature should be changed by the kind of pan and the cooking content.

  Hereinafter, control of the stewed cooking mode of this embodiment will be described based on FIG.

  FIG. 5 shows changes in the detected temperature and heating power at the bottom of the pan after the stew cooking mode is set and heating is started, with the horizontal axis indicating time and the vertical axis indicating temperature. The image of the water temperature change in the pan is also shown with a thin solid line.

  First, when the stew cooking mode is started, the user first turns the heating state adjustment unit 12a until the temperature detected at the bottom of the pan detected by the temperature sensor 7a reaches the control start temperature, for example, 80 ° C. Heating is performed with the set thermal power set by dynamic operation. When the detected temperature at the bottom of the pan reaches 80 ° C., the set thermal power set by the user is switched to the first thermal power that is the thermal power for control. The first thermal power is a thermal power “3”, which is a moderate thermal power among the five levels of thermal power “1” to “5” described above.

When the heating by the thermal power “3” as the first thermal power is continued and it is detected that the heating target in the pan is in a boiling state based on the detected temperature at the bottom of the pan, the detection time t1 The measurement of the timer time set by the above-described timer switch 18 is started. The detected temperature of the bottom of the pot when the detected boiling condition is shown as a boiling temperature T _B.

  In this embodiment, the boiling state is detected by measuring the time required for the temperature detected at the bottom of the pan by the temperature sensor 7a to rise to a predetermined temperature, for example, 1 ° C., and the measured time is a predetermined time, for example, 40 When it exceeds 2 seconds, it is detected as a boiling state.

  After the boiling state is detected, the heating at the heating power “3” is further continued, and when an equilibrium state in which the detected temperature is stabilized is detected based on the detected temperature at the bottom of the pan, the detection is performed at the detection time t2. The thermal power “3” that is the thermal power of 1 is switched to the second thermal power that is weak in thermal power. This second thermal power is the thermal power “1” which is the weakest thermal power among the above-mentioned five levels of thermal power “1” to “5”.

  In this embodiment, the equilibrium state is detected every fixed determination period, for example, every 30 seconds, from the detection temperature Te at the bottom of the pot at the end of the determination period of 30 seconds, to the detection temperature at the bottom of the pot at the start. When the temperature difference ΔT (= Te−Tb) obtained by subtracting Tb falls within a predetermined temperature range, for example, −2 ° C. or more and + 2 ° C. or less (−2 ° C ≦ ΔT ≦ + 2 ° C.) Assuming that the state is detected, the detected temperature Te at the bottom of the pan at the end of the determination period is set as the equilibrium temperature Tα.

  The detection of the equilibrium state is started when the temperature detected at the bottom of the pan reaches 80 ° C. which is the control start temperature, and for example, it is determined whether or not the equilibrium state is reached every 30 seconds.

  The equilibrium temperature Tα may be the detected temperature Tb at the bottom of the pan at the start of the determination period, instead of the detected temperature Te at the bottom of the pan at the end of the determination period. In particular, the detected temperature after the equilibrium temperature has been detected becomes substantially flat, and since it rises and falls due to the influence of disturbances such as fluctuations in wind and supply gas pressure, the detected temperature at the end of the judgment period Te may be the equilibrium temperature Tα, or the detected temperature Tb at the start time may be the equilibrium temperature Tα.

  By reducing the thermal power from the thermal power “3” to the thermal power “1” at the time point t2 when the equilibrium state is detected, as shown in FIG. 5, the detected temperature at the bottom of the pan is lowered, and the second temperature lower than the equilibrium temperature Tα. When the temperature falls to the set temperature T2, the thermal power “1” is switched to the third thermal power stronger than the thermal power “1” and equal to or weaker than the thermal power “3” at the time t3. In this embodiment, the third thermal power is the same thermal power “3” as the first thermal power described above.

  Thus, when it becomes 2nd preset temperature T2, since it switches to heating power "3" and a heating power is strengthened, as shown in FIG. 5, the detection temperature of the bottom part of a pan rises again. When the detected temperature at the bottom of the pan becomes the first set temperature T1 lower than the equilibrium temperature Tα and higher than the second set temperature T2, the thermal power “3” is changed again to the weak thermal power “1” at the time t4. Switch.

  Thereafter, in the same manner, when the detected temperature at the bottom of the pan falls to the second set temperature T2, the thermal power is switched to the thermal power “3” again. When the detected temperature rises to the first set temperature T1, the thermal power is switched to the thermal power “1” again. The detected temperature at the bottom of the pan is controlled to a temperature range based on the first and second set temperatures T1 and T2 lower than the equilibrium temperature Tα.

  Immediately after switching the heating power, an overshoot in which the detected temperature at the bottom of the pan exceeds the first set temperature T1 or an undershoot below the second set temperature T2 occurs. 2 It is slightly wider than the temperature range where the set temperatures T1 and T2 are the upper and lower limits.

  Thus, while the detected temperature at the bottom of the pan is controlled to the temperature range based on the first and second set temperatures T1 and T2 lower than the equilibrium temperature Tα, the measurement is started from the detection time t1 of the boiling temperature. When the timer time reaches the set timer time, that is, when the time is up, a buzzer notifies the user, and the gas stove unit 2a automatically extinguishes and ends the stew cooking mode. The user pushes in the heating state adjusting unit 12a to turn off the instrument plug, and presses the power switch 13 to turn off the power.

  In this embodiment, a first set temperature T1 (= Tα−a) lower by a ° C. than the equilibrium temperature Tα and a second set temperature T2 (T2 = T1-b) lower by b ° C. than the first set temperature T1. Can be selected by the operation of the above-described stew menu switch 22 and is set as follows depending on whether the stew heating power is selected to be “strong”, “standard”, or “weak”.

  That is, when “strong” is selected, for example, a ° C. = 1 ° C. and b ° C. = 1 ° C., and when “standard” is selected, for example, a ° C. = 3 ° C., b ° C. = When the temperature is 1 ° C. and “weak” is selected, for example, a ° C. = 5 ° C. and b ° C. = 1 ° C.

  For example, when the equilibrium temperature Tα is, for example, 105 ° C., when “strong” is selected, the first set temperature T1 is 104 ° C. (= 105-1), and the second set temperature T2 is 103 ° C. (= 104-1). In this case, when the detected temperature at the bottom of the pan is 104 ° C., the thermal power “3” is switched to the thermal power “1”, and when 103 ° C. is reached, the thermal power “1” is switched to the thermal power “3”. The heating power is switched each time the first set temperature 104 ° C. or the second set temperature 103 ° C., and the detected temperature at the bottom of the pan is changed to the first and second set temperatures 104 ° C. and 103 ° C. lower than the equilibrium temperature 105 ° C. Controlled to a temperature range based.

  When “standard” is selected, the first set temperature T1 is 102 ° C. (= 105-3), and the second set temperature T2 is 101 ° C. (= 102-1). In this case, when the detected temperature at the bottom of the pan reaches 102 ° C., the heating power “3” is switched to the heating power “1”, and when 101 ° C. is reached, the heating power “1” is switched to the heating power “3”. The heating power is switched each time the first set temperature 102 ° C. or the second set temperature 101 ° C., and the detected temperature at the bottom of the pan is changed to the first and second set temperatures 102 ° C. and 101 ° C. lower than the equilibrium temperature 105 ° C. Controlled to a temperature range based.

  Further, when “weak” is selected, the first set temperature T1 is 100 ° C. (= 105−5), and the second set temperature T2 is 99 ° C. (= 100−1). In this case, when the detected temperature at the bottom of the pan reaches 100 ° C., the thermal power “3” is switched to the thermal power “1”, and when 99 ° C. is reached, the thermal power “1” is switched to the thermal power “3”. The heating power is switched each time the first set temperature 100 ° C. or the second set temperature 99 ° C., and the detected temperature at the bottom of the pan becomes the first and second set temperatures 100 ° C. and 99 ° C. lower than the equilibrium temperature 105 ° C. Controlled to a temperature range based.

  FIG. 5 shows an example in which “standard” is selected.

  As described above, at the equilibrium temperature Tα at which the equilibrium state is detected based on the detected temperature at the bottom of the pan, the object to be heated in the pan has a temperature of about 100 ° C. regardless of the material of the pan. Therefore, after detecting the equilibrium state, the object to be heated in the pan is blown by controlling the detected temperature at the bottom of the pan to a temperature range based on the first and second set temperatures lower than the equilibrium temperature Tα. It will be kept in a light boiled state without spilling and will be boiled quickly, and as before, there is no need for the user to manually adjust the heating power while monitoring so that it will not spill, and automatic cooking is done Can be done.

  In addition, during execution of the stew cooking mode, the user pushes in the heating state adjustment unit 12a and extinguishes the gas stove unit 2a, turns off the power by pressing the power switch 13, or the detected temperature at the bottom of the pan is Even when a high cut temperature set as a safety function for preventing scorching, for example, 150 ° C., is exceeded, the gas stove unit 2a automatically extinguishes and the stew cooking mode is stopped.

  During the execution of the stewed cooking mode, when a heating object, for example, ingredients, seasoning or water is additionally added to the pan, the detection temperature of the bottom of the pan is lowered, but in this embodiment, the detection temperature of the pan is The control differs depending on whether or not the temperature falls to a predetermined reset temperature, for example, 70 ° C.

  That is, when the stew cooking mode is being executed, additional ingredients and seasonings are added to the pan, and if the detected temperature of the pan does not drop to the reset temperature of 70 ° C., the first set as described above is used. 1, The heating control by 2nd preset temperature T1, T2 is continued.

  For example, when trying to make miso soup, the menu switch 22 for stew is set to set the stew cooking mode, the “weak” stew fire power is set, and the heating state adjusting unit 12a is pushed to operate the gas stove unit 2a. Ignite. Thereby, control by the stew cooking mode is started, and when the equilibrium state is detected, the temperature at the time of detection is set as the equilibrium temperature Tα, and the first and first set as described above based on the equilibrium temperature Tα. 2 Heating is controlled by the set temperatures T1 and T2. During cooking, even if additional ingredients such as vegetables and miso are added into the pan, as shown in FIG. 6, if the detected temperature at the bottom of the pan does not drop below 70 ° C, until the end of cooking, Control of heating by the first and second set temperatures T1 and T2 once set is continued.

  On the other hand, when the stewed cooking mode is being executed, water and a large amount of ingredients are added to the pan, and if the detected temperature at the bottom of the pan falls below 70 ° C, which is the reset temperature, The control of the heating by the second set temperature is cleared, the equilibrium state is detected again, the first and second set temperatures are reset based on the equilibrium temperature at the time of detection, and the reset first and second are set. The heating control based on the set temperature is executed again.

  For example, if you want to make a cream stew, cut potatoes, onions, carrots and other vegetables into large pieces and place them in a pan with chicken glass or water and seasoning (consomme cubes, etc.). Next, the simmering menu switch 22 is pressed to set the simmering cooking mode, a “strong” simmering heating power is set, and the heating state adjusting unit 12a is pressed to ignite the gas stove unit 2a. Thereby, the control by the stew cooking mode is started, and when the equilibrium state is detected as shown in FIG. 7, the temperature at the detection time t2 is set as the equilibrium temperature Tα, and the set first and second set temperatures T1 are set. , T2 is controlled for heating.

  In the middle of the stew cooking mode, add cream sauce (made with butter, flour, milk) in the pan, and if the detected temperature at the bottom of the pan falls below 70 ° C, which is the reset temperature, The control of heating by the set first and second set temperatures T1 and T2 is once cleared, and until the detected temperature at the bottom of the pan reaches 80 ° C., which is the control start temperature, the user adjusts the heating state adjusting unit 12a. When the detected temperature reaches 80 ° C, the heating power is switched to "3" as described above, the equilibrium state is detected again, and the equilibrium state is detected. The detected temperature at the bottom of the pan at time t7 is set to the equilibrium temperature Tα ′, the first and second set temperatures T1 ′ and T2 ′ are reset, and the heating is performed by the reset first and second set temperatures T1 ′ and T2 ′. Execute the control.

Also, if the timer time is set, the detected temperature of the bottom of the pot, when lowered below 70 ° C. is reset temperature, measuring time of the timer is also cleared at that time t5, again, the boiling temperature T _B 'Is detected, and the measurement of the newly set timer time is started from the detection time t6.

(Other embodiments)
In the above-described embodiment, the description is applied to the gas stove unit 2a with the standard thermal power, but it can also be applied to the gas stove unit 2b with a high thermal power and the gas stove unit 2c with a small thermal power.

  In the above-described embodiment, the thermal power is set to five levels. However, the thermal power is not limited to five levels and is arbitrary, and the switching of the thermal power is not limited to the thermal power “1” and the thermal power “3”.

  The detection of the boiling state and the equilibrium state is not limited to the above-described embodiment, and may be detected by other methods.

  In the said embodiment, although the cooking container was heated with the gas burner, it is not limited to a gas burner, It is applicable to various heating cookers, such as using an electric heater, an IH heater, etc.

  Further, the cooking device is not necessarily limited to the built-in type, and may be a desktop cooking device.

2a to 2c Gas stove section 3 Grill
7a-7c Temperature sensor 11 Control unit 12a-12c Heating state adjustment unit 17 Cooking setting input unit for gas stove 18 Timer switch 22 Menu switch for stew cooking

Claims (5)

A heating cooker comprising heating means for heating the cooking container, temperature detection means for detecting the temperature of the cooking container, and control means for controlling the heating means based on the detected temperature detected by the temperature detection means. Because
A cooking mode setting means for setting the stew cooking mode is provided,
When the control means detects the equilibrium temperature at which the detected temperature is in an equilibrium state when the stewed cooking mode is set, the detected temperature falls to a second set temperature lower than the equilibrium temperature, When the detected temperature rises to a first set temperature that is lower than the equilibrium temperature and higher than the second set temperature, with the heating power of the heating means being a stronger heating power, the heating power of the heating means Switch to a weaker heating force,
A cooking device characterized by that. The temperature detecting means detects the temperature of the bottom of the cooking container,
The control means controls the heating power of the heating means to the first heating power until the equilibrium temperature is detected, and is weaker than the first heating power after the equilibrium temperature is detected. When switched to the second heating power, when the detected temperature falls to the second set temperature, switched to a third heating power stronger than the second heating power and the same as or weaker than the first heating power, When the detected temperature rises to the first set temperature, it switches to the second heating power, and thereafter, every time the detected temperature falls to the second set temperature or rises to the first set temperature, Switching control to the third heating power or the second heating power,
The cooking device according to claim 1. The cooking mode setting means has a timer setting unit for setting a cooking time in the stew cooking mode,
The control means includes a timer measuring unit that measures the cooking time set in the timer setting unit, and detects a boiling temperature at which the heating object in the cooking container is in a boiling state based on the detected temperature. At the time, start measuring the cooking time by the timer measurement unit,
The cooking device according to claim 1 or 2. The cooking mode setting means includes a change setting unit that changes and sets the first and second set temperatures.
The cooking device according to any one of claims 1 to 3. The control means is configured such that the detected temperature is lower than the second set temperature although the stewed cooking mode is set and the heating by the heating means is continued after detecting the equilibrium temperature. When the temperature falls to a predetermined temperature, the equilibrium temperature is detected again, and the first and second set temperatures are reset.
The cooking device according to any one of claims 1 to 4.

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