JP6579961B2 - Cooker - Google Patents

Description

  The present invention relates to a cooking device that accommodates a dish-like cooking utensil on which a food item is placed in a heating chamber and can perform automatic cooking.

  DESCRIPTION OF RELATED ART Conventionally, the heating cooker which accommodates the heating net in which cooking goods, such as a fish and meat, are accommodated in a heating chamber, and cooks is known. When cooking with the above grille, the grille is made of metal wire, so the oil and moisture generated from the cooked dish will contaminate the inner wall of the heating cabinet and the bottom of the grille. Cheap. For this reason, it has been proposed to cook the food by placing it on a dish-like cooking utensil such as a cooking plate or a heating container.

  On the other hand, when cooking using the dish-shaped cooking utensils as described above, the cooked food in the heating chamber becomes difficult to see, so automatic cooking of cooked food by automatically increasing or decreasing the heating amount of the heating means A cooking device with a cooking mode has also been proposed.

  By the way, when cooking automatically using a dish-shaped cooking utensil, the bottom surface of the cooked product is in contact with the bottom wall of the cooking utensil, so heating is performed so that the temperature of the cooking utensil is within a certain temperature range during automatic cooking. There is a case where temperature control for increasing or decreasing the heating amount of the means is performed. When performing such temperature control, it is preferable to actually measure the temperature of the cooking utensil during cooking, but since the cooking utensil is put in and out of the heating chamber with the food being placed on it, the temperature sensor Is difficult to arrange in a cooking utensil. Therefore, in this type of cooking device, a temperature sensor for detecting the temperature in the heating chamber is provided, and the temperature sensor is used so that the food is heated at an appropriate heating temperature according to the selected automatic cooking mode. When the inside temperature detected in step 1 reaches a predetermined temperature control lower limit temperature and temperature control upper limit temperature set in advance, temperature control for increasing or decreasing the heating amount of the heating means is performed.

JP 2014-214902 A Japanese Patent Laid-Open No. 2015-200471 JP-A-2015-164494

  However, the dish-like cooking utensils as described above have a larger heat capacity than the grill net. Therefore, once the temperature of the cooking utensil rises, the temperature of the cooking utensil is maintained within the temperature range appropriate for the cooked item even if the heating amount is increased or decreased at the preset temperature regulation lower limit temperature and temperature regulation upper limit temperature. Is difficult. For example, even if the heating amount is reduced at the upper temperature control temperature limit, the temperature of the cooking utensil is not easily lowered. In some cases, there is a problem that a large amount of oily smoke is generated from the oil accumulated on the cooking utensil by the high temperature cooking utensil. Although it is possible to set the temperature control lower limit temperature and the temperature control upper limit temperature according to the type of cooked food, for example, even if one grilled fish is considered, the size of the cooked food differs depending on the fish type, and the same kind Even with food, the amount of food varies from cooking to cooking. Therefore, since the temperature characteristics of the internal temperature also differ due to such a difference in the load of the cooked item, the temperature adjustment lower limit temperature and the temperature adjustment upper limit temperature corresponding to all cooking are actually set in advance. It is difficult.

  The present invention has been made in order to solve the above-described problems, and an object of the present invention is a cooking device capable of automatic cooking by introducing a dish-shaped cooking utensil on which a food is placed into a heating chamber. In the case of performing temperature control for increasing or decreasing the heating amount of the heating means during automatic cooking, the temperature of the cooking utensil is maintained in a temperature range appropriate for the cooked food, and a cooked food having a good taste is provided.

The present invention comprises a heating cabinet,
At least one heating means for heating the inside of the heating chamber;
An internal temperature detection unit for detecting the internal temperature in the heating chamber,
An automatic cooking mode selection unit that performs automatic cooking by storing a dish-shaped cooking utensil on which food is placed in a heating chamber;
A heating cooker having a control device for controlling the temperature by increasing or decreasing the heating amount of the heating means during automatic cooking,
When heating is started in the automatic cooking mode, a predetermined initial heating amount is satisfied until a predetermined initial heating time elapses from the start of heating or until an initial heating condition in which the internal temperature reaches the predetermined initial heating temperature Ta is satisfied. In the heating chamber,
When the initial heating conditions are satisfied, the temperature characteristic of the internal temperature when the heating chamber is heated by reducing the predetermined lower limit temperature determination time and the heating amount to the predetermined lower limit temperature determination heating amount lower than the initial heating amount Based on the above, the temperature control lower limit temperature Tb (where Ta> Tb) is set,
After the elapse of the lower limit temperature determination time, the temperature characteristic of the internal temperature when the heating chamber is heated by increasing the predetermined upper limit temperature determination time and the heating amount to a predetermined upper limit temperature determination heating amount higher than the lower limit temperature determination heating amount. Based on the temperature control upper limit temperature Tc (where Tb <Tc),
After the elapse of the upper limit temperature determination time, the cooking device performs temperature adjustment control based on the set temperature adjustment lower limit temperature Tb and temperature adjustment upper limit temperature Tc.

According to the heating cooker, since the heating means is heated at a predetermined initial heating amount until the initial heating condition is satisfied in the initial heating stage before performing the temperature control, the internal temperature and the cooking utensil temperature are respectively set. It is possible to evaluate the change in temperature characteristics of the internal temperature from a state where the temperature is raised to a certain temperature.
Then, after the initial heating conditions are satisfied, if the heating amount of the heating means is reduced to a predetermined lower limit temperature determination heating amount lower than the initial heating amount, the internal temperature decreases, The degree of temperature drop varies depending on the cooking utensil and food. In addition, if the heating amount of the heating means is increased to a predetermined upper limit temperature determination heating amount that is higher than the lower limit temperature determination heating amount after the lower limit temperature determination time has elapsed, the internal temperature rises. Depending on the food, the degree of temperature rise varies. Therefore, in the temperature control that increases or decreases the heating amount of the heating means by evaluating the temperature characteristics of the internal temperature at the predetermined lower limit temperature determination time and the upper limit temperature determination time, the cooking utensil accommodated in the heating chamber and The temperature control lower limit temperature Tb and the temperature control upper limit temperature Tc suitable for the cooked food can be set.

In the heating cooker, preferably,
The temperature control further increases or decreases the heating amount based on a predetermined lower limit switching time and upper limit switching time.

  As cooking progresses, the temperature drop or temperature rise of the inside temperature changes, so the temperature adjustment is based only on whether the inside temperature reaches the temperature adjustment lower limit temperature Tb and the temperature adjustment upper limit temperature Tc. When the control is performed, the amount of heating is not changed for a long time, and the temperature of the cooking utensil may increase excessively, or the food may not be heated sufficiently. For this reason, the temperature of the cooking utensil can be maintained in a temperature range appropriate for the cooked food by performing temperature control based on not only the internal temperature but also the predetermined lower limit switching time and upper limit switching time.

In the heating cooker, preferably,
During the temperature control, the set temperature control lower limit temperature Tb and / or temperature control upper limit temperature Tc is changed based on the temperature characteristics of the internal temperature when the heating amount is decreased.

  Even if it is the same cooking thing, if the load of cooking goods changes, the grade of a temperature drop will differ. For example, when the amount of heating is decreased, the temperature inside the cabinet decreases earlier as the load on the food is larger, and the temperature inside the chamber gradually decreases as the load on the food is smaller. Therefore, it is possible to determine the load of the food based on the temperature characteristic of the internal temperature when the heating amount is decreased in the temperature control. And according to the said heating cooker, based on the temperature characteristic of the temperature in a store | warehouse | chamber when the heating amount of a heating means was reduced during temperature control, the set temperature control minimum temperature Tb and / or temperature control upper limit temperature Since Tc is changed and temperature control is performed using the changed temperature control lower limit temperature Tb and / or temperature control upper limit temperature Tc, the temperature of the cooking utensil is maintained in an appropriate temperature range according to the load of the food. can do.

In the heating cooker, preferably,
During the temperature control, the lower limit switching time and / or the upper limit switching time is changed based on the temperature characteristics of the internal temperature when the heating amount is decreased.

  According to the heating cooker, since the lower limit switching time and / or the upper limit switching time is changed based on the temperature characteristics of the internal temperature when the heating amount is decreased during the temperature control, the temperature of the cooking utensil is further controlled. It can be maintained in an appropriate temperature range according to the load of the food.

As described above, according to the present invention, a cooking device in which a dish-like cooking utensil on which food is placed is placed in a heating cabinet and capable of automatic cooking is used, and temperature control is performed during automatic cooking. In this case, the temperature adjustment lower limit temperature Tb and the temperature are not based on the preset temperature adjustment lower limit temperature and temperature adjustment upper limit temperature but on the temperature characteristics of the internal temperature when the heating amount of the heating means is increased or decreased before the temperature adjustment control. Since the adjustment upper limit temperature Tc is set, the temperature of the cooking utensil can be maintained in a temperature range appropriate for cooking the cooking utensil according to the cooking utensil and the cooking utensil accommodated in the heating chamber.
In addition, according to the present invention, during the temperature control, the temperature adjustment lower limit temperature Tb and the like are changed based on the temperature characteristics of the internal temperature when the heating amount of the heating means is reduced, so that the temperature of the cooking utensil is cooked. It can be maintained in an appropriate temperature range according to the load of the object.
Therefore, according to this invention, when cooking automatically using a dish-shaped cooking utensil, the excess and deficiency of cooking can be reduced and a cooked product with good taste can be provided.

FIG. 1 is a schematic perspective view showing an example of a heating cooker according to an embodiment of the present invention. FIG. 2 is a schematic longitudinal sectional view of the heating cooker of FIG. FIG. 3 is an explanatory diagram showing an example of an operation unit when the container cooking mode is selected in the heating cooker according to the embodiment of the present invention. FIG. 4 is a circuit diagram showing an example of a heating cooker according to the embodiment of the present invention. FIG. 5 is a correlation diagram showing the relationship between the heating time when automatic cooking is performed in the container cooking mode, the internal temperature, and the bottom wall temperature of the heating container in the cooking device according to the embodiment of the present invention. is there. FIG. 6 shows the heating time when the cooked food with different loads is automatically cooked in the container cooking mode, the internal temperature, and the bottom wall temperature of the heating container in the cooking device according to the embodiment of the present invention. It is a correlation diagram which shows a relationship. FIG. 7 is a flowchart showing an example of the control operation when the container cooking mode is selected in the heating cooker according to the embodiment of the present invention.

Hereinafter, the cooking device according to the present embodiment will be specifically described with reference to the drawings.
FIG. 1 is a schematic perspective view showing an example of a heating cooker according to the present embodiment applied to a gas stove, and FIG. 2 is a schematic longitudinal sectional view thereof. As shown in FIG. 1, the gas stove includes a plurality of stove burners 31, 32, 33 on the top surface of the top plate 30, and a grill cabinet (heating chamber) 2 is provided inside the stove main body 3. In the grill cabinet 2, for example, cooking tools such as a grill net (not shown), a cooking plate 4 for cooking mainly grilled fish and meat, or a so-called cocot-type lidded heating container 5 are accommodated. . In this gas stove, the grill, the cooking plate 4 and the heating container 5 are each replaced according to the type of cooking and accommodated in the grill cabinet 2, so FIG. 2 shows an example using the heating container 5. . Each of the cooking plate 4 and the heating container 5 body is a shallow dish having a substantially rectangular shape in plan view, and those made of metal or ceramics are used.

  In front of the top surface of the top plate 30, a liquid crystal display unit 300 for displaying the operation state, cooking mode, cooking conditions, and the like is arranged so that the display panel can be visually recognized. In this specification, the direction in which the grill door 21 and the back side of the grill cabinet 2 face each other is referred to as the front-rear direction, the width direction of the grill cabinet 2 is referred to as the left-right direction, and the height direction of the grill cabinet 2 is referred to as the up-down direction.

  As shown in FIG. 2, a grill door 21 that slides back and forth is provided in the front opening 100 of the grill cabinet 2. A connecting plate 210 is extended below the rear surface of the grill door 21 toward the inside of the grill cabinet 2, and a support frame 18 made of a metal wire material on which the juice tray 16 is placed is connected to the connecting plate 210. Has been. The support frame 18 is provided with front and rear support portions 180 that project the front and rear sides upward and support the container support 19 for installing the grill net, the cooking plate 4 and the heating container 5 from below. . The container support 19 is a substantially rectangular metal frame, and the front and rear portions of the container support 19 are placed on the front and rear support portions 180 of the support frame 18. The heating container 5 is dropped into the left and right, and the left and right grips of the main body of the heating container 5 are placed on the left and right support frame parts, whereby the heating container 5 is installed at a predetermined position in the grill box 2. Thereby, the heating container 5 and the juice receiving tray 16 are pulled out to the front of the grill cabinet 2 by pulling the grill door 21 forward, and the heating container 5 and the juice receiving tray 16 are pulled out of the grill storage by pushing the grill door 21 backward. It is comprised so that it may be accommodated in 2. Although not shown, when the cooking plate 4 is used, cooking is performed in the grill cabinet 2 by placing the front and rear portions of the cooking plate 4 on the support portions 180 before and after the support frame 18 instead of the container support 19. The plate 4 is installed at a predetermined position.

  An upper fire burner 56 for heating the heating container 5 from above is provided at the center of the upper wall in the grill cabinet 2. Further, a lower fire burner 55 for heating the main body of the heating container 5 from the side and the lower side is provided at a position below the central part of the left and right side walls in the grill cabinet 2. The lower fire burner 55 may be provided only on one side wall. An exhaust duct 17 is connected to the back end of the grill cabinet 2, and the exhaust duct 17 serves as an exhaust passage 13. Instead of the upper and lower burners 56 and 55, an electric heater may be used.

  A first temperature sensor 14a and a second temperature sensor 14b are disposed below the first and second central portions of the rear wall of the grill cabinet 2. The first and second temperature sensors 14a and 14b detect the internal temperature in the grill cabinet 2, and the internal temperature detection signal is output to the control device C described later. In the gas stove according to the present embodiment, control of automatic cooking at a high temperature is executed based on the internal temperature detected by the first temperature sensor 14a, and temperature control is performed based on the internal temperature detected by the second temperature sensor 14b. And ignition prevention control is executed.

  Referring back to FIG. 1, the operation unit 23 located on the right side of the grill door 21 has point-extinguishing switches 24, 25, 26 having both the power switch 29 and the point / fire-extinguishing functions of the stove burners 31, 32, 33 and the heating power adjustment function. Is arranged. On the other hand, the operation portion 36 formed on the left side of the grill door 21 has a grill switch 37 having both a function of turning on and off the upper and lower burners 56 and 55 and a heating power adjustment function, and a kangaroo operation unit 38 below the switch 37. Is provided.

  As shown in FIG. 3, the operation unit 38 is provided with a touch panel type operation unit 380. The operation unit 380 accommodates the cooking plate 4 and the heating container 5 on which the food is placed in the grill cabinet 2, and an auto menu switch 381 (automatic cooking mode selection unit) for selecting an automatic cooking mode for automatic cooking. A cooking selection switch 382 for selecting the type of cooking from among the automatic cooking modes, a baking condition selection switch 383 for setting the baking and finishing of the cooked food in each automatic cooking mode, and a display Part 384. For example, when cooking using the heating container 5, when the user operates the auto menu switch 381, the container cooking mode is alternatively selected from a plurality of automatic cooking modes and is lit on. Further, every time the user operates the cooking selection switch 382, the type of cooking of grilled fish, grilled rice, or timer setting is alternatively selected and displayed on the display unit 384. Further, each time the user operates the baking condition selection switch 383, the strong, standard, and weak baking adjustments are alternatively selected and displayed on the display unit 384. Although not shown, when cooking is performed using the cooking plate 4, the display in the plate cooking mode is similarly displayed on the display unit 384.

  FIG. 4 is a circuit diagram of the gas stove according to the present embodiment. The control device C controls not only the upper and lower burners 56 and 55 but also the combustion of the stove burners 31, 32 and 33. Hereinafter, only the upper and lower burners 56 and 55 will be described. Will not be described.

  As shown in FIG. 4, branch pipes 551 and 561 branched from the gas supply pipe 550 are connected to the upper and lower burners 56 and 55, respectively. The gas supply pipe 550 is connected to the main valve V1, the governor G, and the electromagnetic A safety valve V2 is interposed. The branch pipes 551 and 561 are respectively provided with thermal power adjustment plates T1 and T2 for adjusting the orifice by operating a stepping motor (not shown) to change the flow rate of the fuel gas, and downstream of the thermal power adjustment plates T1 and T2. Are provided with latch valves V3 and V4. The operation of the main valve V1, the electromagnetic safety valve V2, the latch valves V3 and V4, and the stepping motor is controlled by the control device C. Specifically, when the main valve V1 and the electromagnetic safety valve V2 are opened and closed, the fuel gas is supplied to or stopped from both the upper and lower burners 56 and 55. Further, by operating the stepping motor to adjust the orifices of the heating power adjusting plates T1 and T2, the heating power of the upper and lower burners 56 and 55 is changed between the strong heating power and the weak heating power, respectively. Further, the supply of fuel gas to the upper and lower burners 56 and 55 is shut off by closing the latch valves V3 and V4. Further, in the vicinity of each flame hole of the upper and lower burners 56 and 55, ignition electrodes 501 and 601 and a flame sensor 502 and 602 for spark discharge by applying a high voltage from the igniter 600 are disposed.

  The control device C includes the first and second temperature sensors 14a and 14b, the power switch 29, the grill switch 37, the main valve V1, the electromagnetic safety valve V2, the stepping motor, the latch valves V3 and V4, the liquid crystal display unit 300, the operation The unit 380, the igniter 600, the flame sensors 502 and 602, and the like are connected via electrical wiring.

  Although not shown, the control device C for controlling the grill cabinet 2 incorporates a microcomputer in which a control program is stored. When the container cooking mode or the plate cooking mode is selected, the microcomputer controls the heating power (heating amount) and cooking time of the upper and lower burners 56 and 55 according to the control program. Further, when the container cooking mode or the plate cooking mode is selected as the functional configuration, the control device operates the main valve V1, the electromagnetic safety valve V2, the stepping motor, and the latch valves V3, V4 to move the upper and lower burners 56, 55. A combustion control unit that controls the amount of heating that heats the inside of the grill cabinet 2 by changing the heating power of this, a setting unit that sets the temperature regulation lower limit temperature Tb and the temperature regulation upper limit temperature Tc based on the temperature characteristics of the cabinet temperature, Based on the temperature characteristics of the internal temperature, the temperature control lower limit temperature Tb and the temperature control upper limit temperature Tc, the changing unit for changing the lower limit switch time and the upper limit switch time during temperature control described later, the temperature control lower limit temperature Tb, Based on the temperature control upper limit temperature Tc, the lower limit switching time, and the upper limit switching time, a temperature control unit that instructs the combustion control unit to increase or decrease the heating power of the upper and lower burners 56, 55, a timer, and the like are provided. Further, in the microcomputer memory, when the container cooking mode or the plate cooking mode is selected, the predetermined heating power of the upper and lower burners 56 and 55, the heating and determination time, and the determination temperature characteristic according to the selected condition. A data table such as total cooking time is stored. These set values can be obtained in advance by experiments using the respective cooking utensils.

  FIG. 5 illustrates an example of a preferable aspect of the present embodiment. When the heating container 5 on which two large horse mackerels are placed is housed in the grill cabinet 2, automatic cooking is performed. The change of internal temperature and the change of the bottom wall temperature of the heating container 5 are shown. In FIG. 5, (a) shows the change in the internal temperature detected by the first temperature sensor 14 b, and (b) to (d) show a thermocouple at three locations on the inner surface of the bottom wall of the heating vessel 5 as a test. It is a change in the bottom wall temperature measured by attaching, (b) is a change in the bottom wall temperature at the center of the left and right of the container bottom wall, (c) is a bottom wall temperature on the left back side of the container bottom wall. (D) shows the change of the bottom wall temperature on the right back side of the container bottom wall. In this automatic cooking, the cooking is set to be completed in 17 minutes from the start of heating.

  Referring to FIG. 5, the automatic cooking control operation in the gas stove of the present embodiment will be schematically described. In the initial heating, the heating power of the upper and lower burners 56 and 55 is changed to the initial heating power Pa (for example, any of the upper and lower burners 56 and 55). The heating is continued until a predetermined initial heating time ta (for example, 9 minutes) elapses or the internal temperature reaches the initial heating temperature Ta (for example, 230 ° C.). Thereby, similarly to the time when the temperature control is executed, it is possible to evaluate the change in the temperature characteristics of the internal temperature from the state where the internal temperature of the grill storage 2 and the temperature of the heating container 5 are respectively increased to a constant temperature. . The initial heating temperature Ta is set according to the type of cooking item and cooking conditions, and in order to more accurately determine the temperature characteristics at the time of temperature drop after satisfying the initial heating conditions, usually, It is set to a temperature higher than the predicted temperature control upper limit temperature Tc.

  When any of the above initial heating conditions is satisfied, the heating power of the upper and lower burners 56, 55 is set to a lower limit temperature determination heating power Pb lower than the initial heating power Pa (for example, the upper heating burner 56 is a strong heating power and the lower heating burner 55 is extinguished). The internal temperature is decreased to decrease the internal temperature, and the internal temperature when the lower limit temperature determination time tb (for example, 60 seconds) has elapsed is set as the temperature adjustment lower limit temperature Tb (for example, 165 ° C.). This temperature regulation lower limit temperature Tb may be set based on other temperature characteristics such as a temperature gradient of the internal temperature within the lower limit temperature determination time tb.

  Next, when the lower limit temperature determination time tb elapses, the heating power of the upper and lower burners 56 and 55 is increased to the upper limit temperature determination heating power Pc (for example, both the upper and lower burners 56 and 55 are strong heating power) higher than the lower limit temperature determination heating power Pb. Increase internal temperature. Then, the internal temperature when the upper limit temperature determination time tc (for example, 60 seconds) has elapsed is set as the temperature adjustment upper limit temperature Tc (for example, 205 ° C.). The temperature control upper limit temperature Tc may be set based on other temperature characteristics such as a temperature gradient of the internal temperature within the upper limit temperature determination time tc.

  When the temperature regulation lower limit temperature Tb and the temperature regulation upper limit temperature Tc are set as described above, the process proceeds to temperature regulation control. In this temperature control, the heating power of the upper and lower burners 56, 55 is reduced to a first temperature control power Pd (for example, the upper fire burner 56 is a strong heating power and the lower fire burner 55 is extinguished), and the internal temperature is set. It is determined whether or not the adjustment lower limit temperature Tb is reached or a predetermined lower limit switching time td (for example, 60 seconds) set according to the type of cooking, baking conditions, or the like has elapsed.

  When the inside temperature reaches the set temperature adjustment lower limit temperature Tb or the lower limit switching time td elapses, the heating power of the upper and lower burners 56 and 55 is changed to the second temperature adjustment heating power Pe (for example, the upper and lower burners 56 and 55 are both high fires). ), And the internal temperature reaches the set temperature control upper limit temperature Tc or a predetermined upper limit switching time te (for example, 60 seconds) set according to the type of cooking, baking conditions, etc. has elapsed. It is determined whether or not to do so. When the internal temperature reaches the temperature control upper limit temperature Tc or the upper limit switching time te elapses, the heating power of the upper and lower burners 56 and 55 is reduced to the first temperature control heating power Pd. Thus, in the present embodiment, the temperature adjustment lower limit temperature set based on the temperature characteristics when the internal temperature is lowered and raised by increasing / decreasing the heating power of the upper and lower burners 56, 55 before temperature control. Since temperature control is executed using Tb and the temperature control upper limit temperature Tc, temperature control according to the temperature characteristics of the heating container 5 and the cooked food in the grill box 2 can be performed. Further, in this temperature control, the heating power of the upper and lower burners 56 and 55 is increased or decreased if a predetermined lower limit switching time td or the like elapses without reaching the set temperature control lower limit temperature Tb or the like. Further, the heating container 5 can be prevented from being heated for a long time in a state where the heating power is not increased or decreased. As a result, as shown in FIG. 5, the bottom wall of the central portion of the heating container 5 ((b) of FIG. 5) and the left and right back wall sides ((c) and (d) of FIG. 5) are provided. The temperature can be maintained in a substantially constant temperature range. As a result, during temperature control, the bottom wall temperature of the heating container 5 can be maintained within a temperature range appropriate for the cooked product, and the cooked product can be heated without excess or deficiency by automatic cooking. Therefore, according to this Embodiment, generation | occurrence | production of a lot of oily smoke at the time of cooking the cooking of a cooking with much cooking and cooking of a lot of oil and the bottom surface of cooking in the case of cooking automatically using the heating container 5 can be prevented.

  FIG. 6 illustrates an example of a more preferable aspect of the present embodiment. When the heating container 5 in which the food with different loads is placed in the grill cabinet 2 and automatic cooking is performed, FIG. The change of the inside wall temperature and the change of the measured value of the bottom wall temperature in the center part before and after the right and left of the heating container 5 are shown. In FIG. 6, (a) shows the change in the internal temperature of the two large horse mackerels, as in FIG. 5, and (b) shows the change in the internal temperature of one of the medium load sacks. (C) shows the change in the temperature in the three cabinets with small loads. (D) shows the change in the bottom wall temperature in the case of (a), (e) shows the change in the bottom wall temperature in the case of (b), and (f) shows the bottom wall temperature in the case of (c). The change in wall temperature is shown. In FIG. 6, in order to make the heating amount in the initial heating the same, the grill cabinet 2 is heated with the initial heating power Pa until the same initial heating time ta elapses. However, as described above, If the initial heating condition for the temperature to reach the predetermined initial heating temperature Ta is satisfied, the thermal power of the upper and lower burners 56 and 55 may be reduced to the lower limit temperature determination thermal power Pb.

  As shown in FIG. 6, in the lower limit temperature determination time and the temperature control, the degree of temperature drop of the internal temperature when the heating power of the upper and lower burners 56 and 55 is reduced varies depending on the load of the food. I understand. This is because, when the load of the food is large, the food is not heated sufficiently within a short time from the start of heating, and the temperature of the food is low. This is because it will decrease. In particular, the degree of the temperature drop in the temperature control after the elapse of the upper limit temperature determination time tc greatly varies depending on the load of the food. This is because, since the temperature of the heating container 5 is not sufficiently increased at the initial stage of heating, the heating amount is used to increase the temperature of the heating container 5 having a large heat capacity, whereas the temperature control is started. In this case, since the temperature of the heating container 5 has already increased to a certain temperature, the load of the food greatly affects the internal temperature. Accordingly, it is possible to determine the difference in the load of the food based on the temperature characteristics of the internal temperature when the heating power of the upper and lower burners 56 and 55 during the temperature control is reduced. And as the load on the food is smaller and the heating time is longer, even if the heating power of the upper and lower burners 56 and 55 is decreased, the temperature in the refrigerator becomes difficult to decrease. come. Therefore, even when the load of the food is small, as in the case where the load of the food is large, the temperature adjustment lower limit temperature Tb and the temperature adjustment lower limit temperature Tb set based on the temperature characteristics of the internal temperature in the initial stage of heating, When temperature control is performed with a predetermined lower limit switching time td and upper limit switching time te set in advance based on the type of cooking, baking conditions, etc., the upper and lower burners 56, The thermal power of 55 is increased, and the cooked food tends to burn.

  Therefore, in the present embodiment, the heating power of the upper and lower burners 56 and 55 is reduced to the first temperature control power Pd (for example, for example) so as to lower the internal temperature from the temperature control upper limit temperature Tc to the temperature control lower limit temperature Tb during temperature control. The set temperature adjustment lower limit temperature Tb and lower limit switching time td are changed based on the temperature characteristics of the internal temperature when the upper fire burner 56 is reduced to a strong heating power and the lower fire burner 55 is extinguished). For example, if the internal temperature Ttd at the lower limit switching time td (for example, 60 seconds) when the heating power of the upper and lower burners 56, 55 is reduced in the first temperature control is less than the set temperature control lower limit temperature Tb For example, the set temperature adjustment lower limit temperature Tb or the like is not changed ((a) in FIG. 6), but the internal temperature Ttd is higher than the set temperature adjustment lower limit temperature Tb, but the temperature difference (Tb−Ttd) is. When the temperature is lower than a predetermined load determination temperature Tp (for example, 5 ° C.), a temperature lower by a predetermined lower limit correction temperature ΔTh (for example, 5 ° C.) than the set temperature adjustment lower limit temperature Tb (for example, 165 ° C.) is newly set. Is set as a low temperature control lower limit temperature Tb (for example, 160 ° C.), and a new lower limit switching time td that is longer than the lower limit switching time td (for example, 60 seconds) by a predetermined lower limit correction time Δth (for example, 30 seconds). (For example, 90 It is set between) (in Figure 6 (b)). Similarly, a temperature lower by a predetermined upper limit correction temperature ΔTi (for example, 20 ° C.) than the set temperature adjustment upper limit temperature Tc (for example, 205 ° C.) is set as a new temperature adjustment upper limit temperature Tc (for example, 185 ° C.). Then, a time shortened by a predetermined upper limit correction time Δti (for example, 30 seconds) from the upper limit switching time te (for example, 60 seconds) is set to a new upper limit switching time te (for example, 30 seconds) (FIG. 6 (b)). Thereby, temperature control can be performed based on temperature control lower limit temperature Tb etc. according to the load of cooking. In addition, when temperature control is performed for a long time, the temperature of the heating container 5 becomes difficult to fall further. Therefore, each time the heating power of the upper and lower burners 56, 55 is reduced by temperature control, the internal temperature Ttd at the lower limit switching time td is determined, and the temperature control lower limit temperature Tb, the lower limit switching time td, and the like may be changed. . Thereby, a foodstuff can be heated in the suitable temperature range according to the load of the foodstuff.

  In addition, in a food with a very small load such as scum, the food is heated to a high temperature within a short time from the start of heating even if the heating power of the upper and lower burners 56 and 55 is reduced by temperature control, so that the cooking container It becomes difficult for the temperature of 5 to fall further. In particular, when the heating container 5 is used continuously, the temperature of the heating container 5 becomes high in the initial stage of heating, so that the temperature inside the container is hardly lowered. Therefore, when the internal temperature Ttd is higher than the set temperature control lower limit temperature Tb and the temperature difference (Tb−Ttd) is equal to or greater than the load determination temperature Tp (for example, 5 ° C.), the set temperature control lower limit temperature Without using Tb, heating with only the upper fire burner 56 is continued ((c) of FIG. 6). However, according to the kind of cooking, you may change so that the set temperature control minimum temperature Tb may be lowered | hung further, and you may further extend the minimum switch time td. Note that the load of the food item may be determined based on other temperature characteristics such as a temperature gradient of the inside temperature within the lower limit switching time td.

  Therefore, according to the more preferable aspect of this Embodiment, the temperature control according to the load of a foodstuff can be performed. Therefore, as shown in FIG. 6, any cooked food can be automatically cooked while maintaining the temperature of the heating container 5 in a certain temperature range ((d) to (f) of FIG. 6). Moreover, since the temperature control is controlled based on the temperature control lower limit temperature Tb and the like changed according to the load of the food during automatic cooking, the temperature control lower limit temperature for each of a large number of foods is set in advance. There is no need.

FIG. 7 is a flowchart illustrating an example of a control operation in automatic cooking when the container cooking mode is selected in the gas stove according to the present embodiment.
First, the auto menu switch 381 accepts the selection of the container cooking mode, the cooking selection switch 382 selects the type of food, the baking condition selection switch 383 selects the finished food, and the grill switch 37 is turned on. Then, the upper and lower burners 56 and 55 are ignited and heating is started at a predetermined initial heating power Pa (steps ST1 to ST5).

  When heating is started, a timer is started, and an initial heating time ta, an initial heating temperature Ta, a lower limit temperature determination time tb, a lower limit temperature determination thermal power Pb, and an upper limit temperature determination according to the selected cooking type and cooking conditions. Time tc, upper limit temperature determination thermal power Pc, lower limit switching time td, upper limit switching time te, lower limit and upper limit correction temperatures ΔTh, ΔTi, lower limit and upper limit correction times Δth, Δti, load determination temperature Tp, first and first Various set values such as 2 temperature control power Pd, Pe and total cooking time tz are read (step ST6).

  When the initial heating time ta elapses or the internal temperature reaches a predetermined initial heating temperature Ta, it is determined that the initial heating condition is satisfied, and the thermal power of the upper and lower burners 56, 55 is reduced to the lower limit temperature determination thermal power Pb ( Steps ST7 to ST9). And when predetermined | prescribed lower limit temperature determination time tb passes after initial heating conditions are satisfied (it is Yes at step ST10), the chamber temperature at the time of lower limit temperature determination time tb passage is set as temperature control lower limit temperature Tb ( Step ST11).

  When the lower limit temperature determination time tb elapses, the heating power of the upper and lower burners 56 and 55 is increased to the upper limit temperature determination heating power Pc (step ST12). And if predetermined | prescribed upper limit temperature determination time tc passes after initial heating conditions are satisfy | filled (it is Yes at step ST13), the chamber temperature at the time of upper limit temperature determination time tc passage will be set as temperature control upper limit temperature Tc ( Step ST14).

  When the upper limit temperature determination time tc elapses, the heating power of the upper and lower burners 56, 55 is reduced to the first temperature control power Pd, the temperature control lower limit temperature Tb and the temperature control upper limit temperature Tc set as described above, and the lower limit switching. Temperature control based on the time td and the upper limit switching time te is started.

  If temperature control is started and the internal temperature has reached the temperature control lower limit temperature Tb before the lower limit switching time td elapses (No in step ST16, Yes in step ST17), the upper and lower burners 56, 55 Since the internal temperature is lowered early by reducing the thermal power of the temperature, the temperature control lower limit temperature Tb and the like are not changed, and the thermal power of the upper and lower burners 56, 55 is increased to the second temperature control thermal power Pe (step) ST21).

  On the other hand, when the lower limit switching time td has elapsed, the internal temperature has not decreased to the set temperature adjustment lower limit temperature Tb (Yes in step ST16), and the internal temperature Ttd when the lower limit switching time td has elapsed is set. When the temperature difference (Ttd−Tb) from the temperature control lower limit temperature Tb is less than the predetermined load determination temperature Tp (Yes in step ST19), the temperature in the chamber is less decreased due to the decrease in the heating power of the upper and lower burners 56, 55. Therefore, the set temperature adjustment lower limit temperature Tb is changed to a new first temperature adjustment lower limit temperature Tb that is lower than the first lower limit correction temperature ΔTh, and the lower limit change time td is a new lower limit change time that is lower than the lower limit correction time Δth. It is changed to td. Similarly, the set temperature adjustment upper limit temperature Tc is changed to a new first temperature adjustment upper limit temperature Tc that is lower than the first upper limit correction temperature ΔTi, and the upper limit switching time te is a new one that is shorter than the upper limit correction time Δti. The upper limit switching time te is changed (step ST20). Then, if the temperature adjustment lower limit temperature Tb at which the inside temperature has been changed is reached by the newly changed lower limit switching time td, the heating power of the upper and lower burners 56, 55 is increased to the second temperature heating power Pe (step) ST21).

  In addition, when the lower limit switching time td has elapsed, the internal temperature has not decreased to the set temperature adjustment lower limit temperature Tb (Yes in step ST16), and the internal temperature Ttd and the set temperature adjustment lower limit temperature Tb When the temperature difference (Ttd−Tb) is equal to or higher than the predetermined load determination temperature Tp (No in step ST19), the internal cooking temperature is unlikely to decrease even if the heating power of the upper and lower burners 56, 55 is reduced. The first temperature control power Pd is maintained until tz ends (step ST24).

  After the heating power of the upper and lower burners 56, 55 is increased to the second temperature control power Pe, the internal temperature reaches the temperature control upper temperature Tc by the upper limit switching time te (No in step ST22, in step ST23) , Yes), the end of the total cooking time tz is determined (step ST24), and if the automatic cooking has not ended, the above temperature control is repeated.

  As described above, according to the gas stove of the present embodiment, when the heating container 5 on which the food is placed is housed in the grill cabinet 2 and is automatically cooked, the temperature corresponding to the heating container 5 and the food is determined. Since the adjustment lower limit temperature Tb and the temperature adjustment upper limit temperature Tc are set, the temperature of the heating container 5 can be maintained in a temperature range suitable for cooking the cooked food. Thereby, the excess and deficiency of cooking can be reduced and the cooking product with favorable taste can be provided.

  Furthermore, during the temperature control, the temperature control lower limit temperature Tb and the like are changed based on the temperature characteristics of the internal temperature when the heating power of the upper and lower burners 56, 55 is reduced. Can be maintained within an appropriate temperature range.

(Other embodiments)
(1) In the above embodiment, the initial thermal power and the upper limit temperature determination thermal power are both high thermal power in the upper and lower burners, and the lower limit temperature determination thermal power is that the upper fire burner is strong thermal power and the lower fire burner is extinguished. If the lower limit temperature determination thermal power is smaller than the initial thermal power limit and the upper limit temperature determination thermal power, each thermal power can be appropriately selected.
(2) In the above embodiment, when determining the load of the food, not only the temperature control lower limit temperature Tb and the temperature control upper limit temperature Tc, but also the lower limit switch time and the upper limit switch time are based on the temperature characteristics of the internal temperature. Although it is changing, only one of these may be changed according to the type of cooking utensil or cooking.
(3) In the above embodiment, the heating power of the upper and lower burners is increased and decreased once, and the temperature adjustment lower limit temperature Tb and the temperature adjustment upper limit temperature Tc are set.

2 Grill box 4 Cooking plate 5 Heating container 14a 1st temperature sensor (inside temperature detection part)
381 Auto menu switch (cooking mode selector)
55 Lower fire burner 56 Upper fire burner

Claims (4)

A heating cabinet;
At least one heating means for heating the inside of the heating chamber;
An internal temperature detection unit for detecting the internal temperature in the heating chamber,
An automatic cooking mode selection unit that performs automatic cooking by storing a dish-shaped cooking utensil on which food is placed in a heating chamber;
A heating cooker having a control device for controlling the temperature by increasing or decreasing the heating amount of the heating means during automatic cooking,
When heating is started in the automatic cooking mode, a predetermined initial heating amount is satisfied until a predetermined initial heating time elapses from the start of heating or until an initial heating condition in which the internal temperature reaches the predetermined initial heating temperature Ta is satisfied. In the heating chamber,
When the initial heating conditions are satisfied, the temperature characteristic of the internal temperature when the heating chamber is heated by reducing the predetermined lower limit temperature determination time and the heating amount to the predetermined lower limit temperature determination heating amount lower than the initial heating amount Based on the above, the temperature control lower limit temperature Tb (where Ta> Tb) is set,
After the elapse of the lower limit temperature determination time, the temperature characteristic of the internal temperature when the heating chamber is heated by increasing the predetermined upper limit temperature determination time and the heating amount to a predetermined upper limit temperature determination heating amount higher than the lower limit temperature determination heating amount. Based on the temperature control upper limit temperature Tc (where Tb <Tc),
A cooking device that performs temperature adjustment control based on the set temperature adjustment lower limit temperature Tb and temperature adjustment upper limit temperature Tc after the upper limit temperature determination time has elapsed. The heating cooker according to claim 1, wherein
The temperature control is a cooking device that further increases or decreases the amount of heating based on a predetermined lower limit switching time and upper limit switching time. The heating cooker according to claim 1 or 2,
A heating cooker that changes the set temperature adjustment lower limit temperature Tb and / or the temperature adjustment upper limit temperature Tc based on the temperature characteristics of the internal temperature when the heating amount is reduced during the temperature control. In the heating cooker according to claim 2 or 3,
A heating cooker that changes the lower limit switching time and / or the upper limit switching time based on the temperature characteristics of the internal temperature when the heating amount is reduced during temperature control.

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