JP2007051806A - Heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To achieve an effective oven function, particularly in a heating cooker mainly concerned with a grill. <P>SOLUTION: The heating cooker comprises an upper electric heater 61 and a lower electric heater 62 provided in a cooking chamber 65 so as to be located above and below a heated object 100, and a grill heating control means 66 for controlling electric power supplied to the upper electric heater 61 and the lower electric heater 62 with electric power set lower than the rated power consumption of the upper electric heater 61 and lower electric heater 62, as the maximum when temperature in the cooking chamber 65 is allowed to reach a set temperature while the heated object 100 is kept as it is in the cooking chamber 65. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to a heating cooker. In particular, oven heating can be performed in a limited space in a cooking cabinet while an object to be heated is put in like a grill.

A roaster grill, which is a type of cooking device, has a roaster function for grilling fish, meat, and the like, and a grill function for grilling a whole pizza, and heats the object to be heated in the cooking cabinet. The surface of the object to be heated can be baked or burnt. In particular, recently, the volume in the cooking chamber has become wider, and it has become more delicious and safe to cook, and its width is increasing (see, for example, Patent Document 1).
JP 2001-074250 A

  As the range of cooking by the roaster grill expands, the demand for cooking by an oven for baking cookies, sponge cakes and the like is also increasing. The oven does not directly heat the object to be heated with a heater or the like, but, for example, heats the object to be heated by increasing the temperature in the cooking chamber. Therefore, in order to realize the oven function, temperature monitoring in the cooking chamber is indispensable, but abnormal temperature monitoring has been performed conventionally.

  Therefore, an object of the present invention is to realize an oven function, a risk prevention measure, and the like that effectively use conventional temperature monitoring particularly in a cooking device mainly including a grill.

  The heating cooker according to the present invention sets a temperature in the cooking chamber while the heating object is placed in the cooking chamber and a plurality of heating means provided in the cooking chamber so as to be positioned above and below the heating object. When the temperature is reached, a heating control means for controlling the power supplied to the heating means with the power set lower than the rated power consumption of the heating means as a maximum is provided.

  According to the present invention, since the heating control unit controls the power supplied to the plurality of heating units to control the temperature in the cooking chamber, oven cooking can be performed. At that time, when the temperature in the cooking chamber reaches the predetermined set temperature, the power lower than the rated power consumption of the heating means is set to the maximum power to be supplied. Compared to grill equipment with a narrow cooking chamber, direct heat transfer to the object to be heated can be suppressed and the surface can be prevented from being burnt. The temperature inside can reach the set temperature. Moreover, since the cooking time including the time to reach the set temperature can be set, oven cooking can be performed with the same feeling as when grill cooking is performed.

Embodiment 1 FIG.
FIG. 1 is a diagram illustrating the appearance of a heating cooker according to Embodiment 1 of the present invention. FIG. 2 is a block diagram showing the configuration of the heating cooker centering on the configuration of the roaster grill 6. FIG. 1 is a built-in type IH cooking heater equipped with a roaster grill. In FIG. 1, the top plate 1 on the upper surface of the heating cooker includes an induction heating unit 2 having a left electromagnetic induction coil 21 and a right electromagnetic induction coil 22, a heater unit 3 having a central heater 31, an upper operation unit 4, and an upper display unit. 5 is provided. A roaster grill 6 is provided in the cooking device. And the grill door 7, the front operation part 8, and the front display part 9 which have the handle 71 for putting in and out a to-be-heated material into the roaster grill part 6 are provided in the heating cooker front surface.

  In the induction heating unit 2 and the heater unit 3 of the heating cooker according to the present embodiment, for example, the left electromagnetic induction coil 21, the right electromagnetic induction coil 22, and the central heater 31 (for example, a radial heater) are provided so as to face the lower surface of the top plate 1. Each heater is provided. An upper surface operation unit 4 is provided on the outer frame portion in front of the top plate 1. In addition, a front operation unit 8 is provided on the front right side of the cooker, and an upper surface display unit 5 that displays operation states of the left electromagnetic induction coil 21, the right electromagnetic induction coil 22, the roaster grill unit 6 (central heater 31), and the like. Is provided on the top plate 1.

  The left temperature detection element 23 and the right temperature detection element 24 are composed of, for example, a thermistor, and a signal based on the temperature of the food in the pot (container) obtained through the top plate 1 is sent to the left induction heating control means 25 and the right, respectively. It transmits to the induction heating control means 26. The central temperature detecting element 32 is made of, for example, a thermostat, detects the temperature rise due to the reflected heat of the pan placed through the top plate 1 and the self-heating of the central heater 31, and outputs a signal based on the detection to the central heater control means 33. Send to.

  The left induction heating control means 25 and the right induction heating control means 26 are composed of, for example, a one-chip microcomputer (microcomputer), an inverter, or the like. Power supply to the left electromagnetic induction coil 21 and the right electromagnetic induction coil 22, respectively, based on a signal including an instruction from the main control means 11 described later, a signal from the left temperature detection element 23, the right temperature detection element 24, and the like. To control heating (thermal power). Further, for example, a signal including data such as temperature is transmitted to the main control means 11. Similarly, the central heater control means 33 performs heating (thermal power) control of the central heater 31 based on a signal including an instruction from the main control means 11, a signal from the central temperature detection element 32, and the like.

  FIG. 3 is a diagram showing a key arrangement of the upper surface operation unit 4. Various keys for operating the induction heating unit 2 and the roaster grill unit 6 are arranged on the upper surface operation unit 4. For example, the left key 41 is arranged on the left side, such as a heating power setting key for selecting the heating power (weak / medium / strong) of the left electromagnetic induction coil 21 and a left fried food key for operating when cooking fried food. On the other hand, on the right side, a heating power setting key for selecting the heating power (low / medium / strong) of the right electromagnetic induction coil 22, a right frying key for operating when cooking the deep-fried food, and 3 kW operated at higher heating power than usual. Right keys 42 such as keys are arranged. Further, an automatic menu key 43, a manual menu key 44, a thermal power UP key 45, a thermal power DOWN key 46, a thermal power DOWN key 46, a start key 47, and a stop key 48 necessary for cooking in the roaster grill section 6 are arranged in the center. By these keys, instructions such as the heating power (electric power) set in the roaster grill unit 6, the cooking mode, the cooking time, and the set temperature are input. In the present embodiment, the cooker can arbitrarily set the set temperature or the like, but for example, the cooking time, the set temperature, or the like may be determined in advance by inputting an instruction such as a cooking course.

  FIG. 4 is a diagram illustrating the front operation unit 8 and the front display unit 9. The front operation unit 8 has a heating power adjustment encoder dial 81 for operating the left electromagnetic induction coil 21, the right electromagnetic induction coil 22 or the central heater 31 on / off and heating power adjustment, respectively, for setting the cooking time of each. A timer setting dial 82 is provided. Further, a lock key 84 for preventing the power switch 83, the induction heating unit 2 and / or the heater unit 3 from operating is also provided. In particular, in the heating cooker according to the present embodiment, as will be described later, a grill illumination key 85 for operating the lamp heater 67 for illuminating the inside of the cooking chamber 65 of the roaster grill section 6 is provided. On the other hand, the front display unit 9 is provided with an operation lamp 91 for teaching each operation state of the left electromagnetic induction coil 21, the right electromagnetic induction coil 22 or the central heater 31 by illuminating characters. Further, as will be described later, there is provided a door caution lamp 92 that illuminates and indicates that the grill door 7 is hot.

  For example, when the control power is supplied to the control-related means such as the main control means 11 and the encoder dial 81 is pushed out to a convex state, the corresponding coil or heater enters a thermal power input standby state. A thermal power display unit (LED) for displaying a thermal power level is disposed on the upper surface display unit 5 of the top plate 1 to display the thermal power level and display indicating an input standby state. In the input standby state, the thermal power display LED is lit blue, and when the thermal power is input during the heater operation, the red LED is lit according to the corresponding thermal power level. The operation lamp 91 of the front display unit 9 also lights up in blue in the standby state and lights up red in the heating operation. Thereby, the present operation state can be confirmed from a position away from the cooking device.

  As shown in FIGS. 1 and 2, the roaster grill unit 6 has a cooking cabinet 65 and a grill door 7 that can be opened and closed for taking the heated object 100 into and out of the cooking cabinet 65. In the cooking cabinet 65, an upper electric heater 61 and a lower electric heater 62 are provided so as to sandwich the heated object 100 placed on the net 101 from above and below. In particular, the lower electric heater 62 is provided between a tray (not shown) disposed on a frame connected to the grill door 7 and the net 101. Here, in the present embodiment, the rated power consumption of the upper electric heater 61 and the lower electric heater 62 is 1200 W and 800 W (that is, 2/3 of the upper electric heater 61), respectively. Further, a back side thermistor 63 serving as a temperature detecting element is disposed in the back of the cooking chamber 65, and further, in the vicinity of the grill door 7 in front of the cooking chamber 65, and an upper electric heater 61 and a lower electric heater. A door thermistor 64 is disposed at a position between the door 62 and the door.

  Here, in the case of the conventional roaster grill, for example, the degree of baking of the object to be heated could be seen through the window provided in the door by the light emitted when the electric heater radiates heat. In the present embodiment, as will be described later, when the power supply to the upper electric heater 61 and the lower electric heater 62 is controlled and the heating power is adjusted, the electric heater emits less light (heat radiation) in some cases, and the grill door The cook may not be able to confirm the state of the object to be heated 100 even when looking through the window 7. Therefore, in the heating cooker according to the present embodiment, a lamp heater 67 serving as an illumination unit for illuminating the inside of the cooking cabinet 65 is provided. The reason why the lamp heater 67 is used is to contribute to heating of the article to be heated 100 and the cooking chamber 65. In particular, by providing the lamp heater 67 on the door side with respect to the upper electric heater 61, not only lighting but also heating in the vicinity of the grill door 7 where the temperature is lowered by touching the outside air can be expected to be completed. Uneven cooking can be performed. Further, although not shown in the drawing, an exhaust port is provided on the back side of the cooking chamber 65, a chimney is connected from the exhaust port, and a catalyst and a catalyst heater for heating the catalyst are disposed in the chimney. Yes. In the chimney, a fan and a fan motor are provided from the cooking chamber 65 behind the catalyst, and the smoke in the cooking chamber 65 is forcibly discharged.

  The grill heating control means 66 has at least a storage means, a timer, and a counter (not shown) in the present embodiment in order to perform heating control in the roaster grill section 6. Then, based on a signal including an instruction from the main control means 11 and a signal related to a detected temperature transmitted from the back side thermistor 24 and the door side thermistor 25, the power supply of the upper electric heater 61 and the lower electric heater 62 is controlled. And fire power (heating) control. Further, for example, a signal including data such as temperature is transmitted to the main control means 11. In particular, in the present embodiment, as will be described later, set temperature data included in a signal transmitted from the main control unit 11, detected temperature data included in signals from the back side thermistor 24 and the door side thermistor 25, and the like. Based on the above, in a state where the article to be heated 100 is placed in the cooking cabinet 65, the temperature in the cooking cabinet 65 reaches the set temperature and is controlled to be kept constant. In the present embodiment, on / off control of the lamp heater 67 is performed based on a signal including an instruction transmitted from the main control unit 11. Furthermore, power supply control to the catalyst heater, drive control of the catalyst fan, and the like are also performed.

  Here, in the present embodiment, regarding the thermal power control of the upper electric heater 61 and the lower electric heater 62, the thermal power is 9 steps from 5.0 to 5.0 in increments of 1.0 to 0.5 (10 steps including thermal power 0). It is assumed that each control can be performed independently. Thermal power 5.0 is supplied with rated power consumption of 1200 W and 800 W, respectively.

  The main control means 11 shown in FIG. 2 controls the entire heating cooker. Particularly in the present embodiment, a signal including data relating to the set temperature instructed by the cooker via the automatic menu key 43, the manual menu key 44, the heating power UP key 45, and the heating power DOWN key 46 of the upper surface operating means 4 in particular. Is transmitted to the grill heating control means 66, and the set temperature is displayed on the upper surface display means 5. Further, the temperature in the cooking chamber 65 may also be displayed on the upper surface display means 5 based on the temperature-related signal transmitted from the grill heating control means 66. Further, based on the instruction input via the front operation means 8, the grill heating control means 66 is controlled to turn on or off the lamp heater 67. Further, for example, data stored in a transmitted signal such as a procedure of processing executed by the main control unit 11 is temporarily or long-term stored, for example, E2PROM (also referred to as an electrically erasable programmable read only memory (EEPROM)). Main control storage means 12 is connected to main control means 11.

  Here, it is set as the circuit structure which sends an electric current through the drive coil of a power supply power relay so that a power supply power relay (not shown) may turn ON when a cook pushes the power switch 83. When the power supply power relay is turned on, an operating power supply 5V is supplied from a control power supply circuit (not shown) to the main control means 10 and the like to start. When the main control means 11 is activated, a drive signal for turning on the above-described power supply power relay is output, the power supply power relay is kept on by the drive signal of the main control means 11, and the control power supply continues to be supplied It becomes.

  As in this embodiment, the cooking device that is provided in the built-in type of induction heating device and is essentially used as a grill device has a limited space in the cooking cabinet 65 (generally available for oven devices that are commercially available etc. The volume is about 1/2). In such a heating cooker, the temperature in the cooking chamber 65 is detected to prevent danger, and the temperature in the cooking chamber 65 can be controlled, so that it can also be used as an oven. In this case, time (equivalent to the conventional preheating time) until the inside of the cooking chamber 65 (the air) is set to the set temperature is not required. And the to-be-heated material 100 can be previously put in the cooking chamber 65. Therefore, since it is not necessary to perform the operation of putting the object to be heated 100 again after preheating, it is convenient for the cooker and the total total cooking time including the preheating time can be set. Can be used with the same feeling.

  However, when normal grill heating is performed, the inside of the cooking chamber 65 reaches a predetermined set temperature or the like with power such as rated power consumption supplied to the upper electric heater 61 and the lower electric heater 62, for example. If it tries to do so, the detection by the thermistor in the cooking cabinet 65 cannot follow the temperature rise in the actual cooking cabinet 65, and the actual temperature in the cooking cabinet 65 rises beyond the set temperature. Will occur. When overshoot occurs, power is wasted and time is required to lower to the set temperature. In addition, due to space limitations, the distance between the upper electric heater 61 and the lower electric heater 62 and the object to be heated 100 is reduced, and if priority is given only to reaching the set temperature, the object to be heated 100 may be burnt. In some cases, it cannot be used.

  Therefore, in the present embodiment, the upper electric heater 61 and the lower electric heater are used when the temperature in the cooking chamber 65 reaches the set temperature while balancing the time until the cooking chamber 65 reaches the set temperature. The heater 62 is not supplied with the rated power consumption, and the maximum power that is lower than the heater 62 is determined in advance based on the set temperature, and the control by the power supply is performed within the power range. Further, the set temperature and the temperature in the cooking chamber 65 may be displayed on the upper surface display unit 5. For example, in the case of grill heating, the upper heating power is increased in order to color the object 100 to be heated. However, if the upper heating power is increased when the cooking chamber 65 is heated, only the upper heating chamber is heated. Since warm air accumulates, it is better to heat from the lower side in order to reach the set temperature. Therefore, in the present embodiment, the energization rate to the lower electric heater 62 is increased, and the power supply is made larger than that of the upper electric heater 61.

  FIG. 5 is a diagram showing a processing operation centering on the grill heating control means 66 until the inside of the cooking cabinet 65 reaches the set temperature. Based on FIG. 5, the operation of the heating cooker until the set temperature is reached will be described.

  FIG. 6 is a diagram illustrating a screen displayed on the upper surface display unit 5. The main control means 11 displays setting screens such as a heating power, a cooking mode, a set temperature, and a cooking time on the upper surface display unit 5 (FIGS. 6A and 6B). Here, it is assumed that an oven is selected. Further, when the set temperature and cooking time are instructed by the cooker via the upper surface operation unit 4, the main control unit 11 sends the heating power to the grill heating control unit 66 based on the signal transmitted from the upper surface operation unit 4. A signal including data such as cooking mode, set temperature and cooking time is transmitted. The grill heating control means 66 starts a step of reaching the set temperature in the cooking chamber 65 based on the thermistor comparison process (hereinafter referred to as a preheating equivalent step) (S1).

  FIG. 7 is a diagram showing the relationship between the electric power (thermal power) supplied to the upper electric heater 61 and the lower electric heater 62 and the set temperature. The grill heating control means 66 sets an energization rate for the upper electric heater 61 and the lower electric heater 62 independently, and controls power supply (S2). The energization is performed at the timing of a half cycle of the power cycle in order to prevent flickering with respect to other electric appliances, for example. For example, the number of cycles of the power supply is used as a unit, and the number of times corresponding to the required power supply is energized at every half cycle timing. At this time, the balance between energization and interruption is considered. In order to eliminate the bias toward the upper half wave or the lower half wave, the energization in the upper half wave and the lower half wave is made equal.

  At least within the range of the temperature at which the heating cooker according to the present embodiment is desired to function as an oven (here, the set temperature), the grill heating control means 66 during the process until the cooking chamber 65 reaches the set temperature, Control is performed so that the power supplied to the lower electric heater 62 is equal to or higher than the electric power supplied to the upper electric heater 61.

  FIG. 8 is a diagram showing the relationship between the set temperature and the target set temperature. For example, if the temperature detected by the back side thermistor 63 and the door side thermistor 64 is the target set temperature, the temperature of the corresponding cooking chamber 65 (here, the central portion of the cooking chamber 65 is the temperature of the cooking chamber 65. The detected temperature is estimated to be a set temperature. It is assumed that the grill heating control means 66 stores this relationship in the storage means (not shown) as data. Moreover, you may memorize | store in the main-control memory | storage means 12 mentioned above. The relationship shown in FIG. 8 represents an example, and the relationship varies depending on the volume of the cooking cabinet 65 and the like. The grill heating control means 66 transmits a signal including detected temperature and set temperature data to the main control means 11. The main control unit 11 causes the upper surface display unit 5 to display either one or both of the detected temperature and the set temperature.

  The grill heating control means 66 determines whether or not the detected temperature has reached the set temperature (S3). Here, in the present embodiment, if one of the temperatures detected by the back side thermistor 63 and the door side thermistor 64 is equal to or higher than the target set temperature as shown in FIG. 7, the detected temperature (the temperature of the cooking chamber 65). Is considered to have reached the set temperature. If it is determined that the detected temperature has reached the set temperature, the preheating equivalent process is terminated and the process proceeds to a constant temperature control process (S5).

  On the other hand, if it is determined in S3 that the detected temperature has not reached the set temperature, it is determined whether 10 minutes have elapsed since the start of the process (S4). If it is determined that it has not elapsed, the power supply in the preheating equivalent process for the upper electric heater 61 and the lower electric heater 62 is continuously controlled (S2). For example, if it is determined that 10 minutes have elapsed since the start of the process, the preheating equivalent process is terminated, and the process proceeds to a temperature constant control process. Therefore, in this embodiment, the preheating equivalent process is 10 minutes at the longest. Here, as an example, the maximum time of the preheating-equivalent process is 10 minutes, but this is not a limitation.

  FIG. 9 is a diagram illustrating a process of performing constant control for maintaining the inside of the cooking chamber 65 at the set temperature in the roaster grill unit 6. The grill heating control means 66 performs a temperature constant control process (cooking process) in which the cooking chamber 65 is controlled to a set temperature for the remaining cooking time designated by the cooker after the preheating equivalent process is completed. Here, in the present embodiment, in the constant temperature control process, the processing described in the following steps is performed at intervals of 1 second. Further, in this description, when the thermal power is lowered, first, it is necessary to reduce the thermal power by reducing the power supply to the lower electric heater 62, and further lower the thermal power of the lower electric heater 62 to 2.0 or less. If there is, the heating power of the upper electric heater 61 is lowered. When increasing the heating power, the heating power is increased to the initial heating power at the maximum for both the upper electric heater 61 and the lower electric heater 62.

  Based on the relationship of FIG. 7, the grill heating control means 66 sets the energization rate in the initial state based on the set temperature for each of the upper electric heater 61 and the lower electric heater 62 independently, and controls power supply. To do.

  When the constant temperature control process is started, first, the grill heating control means 66 actually selects one of the temperatures detected by the back side thermistor 63 and the door side thermistor 64 (hereinafter referred to as these temperatures). It is determined whether the detected temperature is equal to or higher than the abnormal temperature (S11). If it is determined that the temperature is higher than the abnormal temperature, the power supply to the upper electric heater 61 and the lower electric heater 62 is stopped, and the heating power is set to 0 (S31). Then, after waiting until the detected temperature reaches the target set temperature for the set temperature to be controlled, the control is started again with the heating power immediately before determining that the detected temperature is equal to or higher than the abnormal temperature (S32).

  If it is determined that the detected temperature is not equal to or higher than the abnormal temperature, it is determined whether or not two seconds have elapsed after performing the process of lowering the thermal power (S12). If the thermal power is not lowered or if 2 seconds have passed even if the thermal power is lowered, power supply with the set thermal power is continued (S13).

  On the other hand, if 2 seconds have not passed since the thermal power was lowered, a thermal power determination is performed to determine whether or not the currently set thermal power is smaller than the thermal power 2 (S101). If the present set thermal power is smaller than the thermal power 2, the set thermal power is set to 0 (S102). If the present set thermal power is not smaller than thermal power 2 (if thermal power is 2 or more), power supply with the set thermal power is continued (S103), and a constant temperature control process is performed in the next 1 second.

  After the process of S13, it is determined whether or not the detected temperature is equal to or higher than the target set temperature + 2 ° C. (S14). If it is determined that the temperature is equal to or higher than the target set temperature + 2 ° C., the thermal power is lowered by 1.0 (S15), and the above-described thermal power determination is performed (S101). If it is determined that it is not the target set temperature + 2 ° C. or higher, it is determined whether the detected temperature is the target set temperature + 1 ° C. (above) (S16). If it is determined that the target set temperature is + 1 ° C. (or higher), it is determined whether the target set temperature + 1 ° C. or higher is continued three times (S17). If it is determined that it has been continued three times, the thermal power is reduced by 0.5 (S18), and the above-mentioned thermal power determination is performed (S101).

  If it is determined that the target set temperature is not + 1 ° C. (or higher), it is determined whether the detected temperature is the target set temperature (or higher) (S19). If it is determined that the temperature is the target set temperature (above), the above-described thermal power determination is performed (S20).

  If it is determined that it is not the target set temperature (above), it is determined whether or not the detected temperature is the target set temperature −1 ° C. or less (S21). If it is determined that the temperature is equal to or lower than the target set temperature −1 ° C., it is determined whether or not it has been continued three times (S22). If it is determined that three consecutive times, the thermal power is increased by 0.5 (S23), and the above-described thermal power determination is performed (S101). The grill heating control means 66 performs the above processing until the cooking time ends.

  As described above, according to the first embodiment, in the roaster grill unit 6, the grill heating control means 66 detects the temperature in the cooking chamber 65 by the back side thermistor 63 and the door side thermistor 64, while the upper electric heater 61. Since the temperature in the cooking chamber 65 is positively controlled by controlling the heating of the lower electric heater 62, oven cooking can be performed in addition to the original grill cooking. In particular, in the present embodiment, a temperature of about 150 ° C. to 180 ° C., which is relatively low, can be controlled, which is convenient. Further, depending on the control method, the inside of the cooking cabinet 65 can be, for example, near 40 ° C. where the dough is fermented. In such a case, a series of operations from fermentation to baking of the dough is performed in the roaster grill unit 6. be able to.

  Further, when the temperature in the cooking chamber 65 reaches a predetermined set temperature, power lower than the rated power consumption of the upper electric heater 61 and the lower electric heater 62 is set in relation to the time until the set temperature is reached. In the roaster grill 6 where the cooking chamber 65 is narrow, overshoot is suppressed, and direct heat transfer to the object to be heated 100 is suppressed, and the surface is not burned. In addition, the inside of the cooking cabinet 65 can be quickly reached the set temperature. In addition, by suppressing direct heat transfer to the object to be heated 100, the temperature in the cooking chamber 65 can reach a predetermined set temperature while the object to be heated 100 is put in the cooking chamber in advance. Moreover, since the cooking time including the time to reach the set temperature can be set, oven cooking can be performed with the same feeling as when grill cooking is performed. Furthermore, since the grill heating control means 66 makes the electric power supplied to the lower electric heater 62 larger than the upper electric heater 61 when the cooking chamber 65 reaches the set temperature, the surface of the object to be heated 100 It is possible to make the inside temperature uniform and reach the set temperature by heating from the lower side without scorching and without accumulating heat only on the upper side of the cooking chamber 65.

  And in the constant temperature control in the cooking chamber 65, even if the thermal power is limited during the demand control that has been unsatisfactory until now, if the constant temperature control is used, cooking is performed without any problem even at the limited low thermal power. be able to. Here, demand control refers to, for example, one or more of the devices in the device so that the total power consumption of the heater load of the entire cooking device does not exceed the maximum rated power of the device (here, assumed to be 5800 W). It is control which suppresses the maximum value of the power consumption which concerns on the heating of a means. For example, the rated power consumption related to induction heating of the right electromagnetic induction coil 22 is maximum 3000 W, the rated power consumption related to induction heating of the right electromagnetic induction coil 21 is maximum 2500 W, and the rated power consumption due to the roaster grill unit 6 is maximum 2500 W (catalytic heater , Including the catalyst fan, lamp heater 67, etc.), the total becomes 8000 W, which exceeds the maximum rated power of the device of 5800 W. Therefore, in order to be able to use these simultaneously, for example, the power supply to the right electromagnetic induction coil 22 that can be originally used at 3000 W may be controlled to 800 W to control the operation. Alternatively, priority may be given between the induction heating unit 2 and the roaster grill unit 6 to supply power to the induction heating unit 2 and limit the power supply to the roaster grill unit 6 to 800W. Thereby, TOTAL thermal power control (total electric power control of the whole apparatus) can be performed. In addition, by enabling temperature control in the roaster grill 6, it is possible to suppress the thermal influence on the appliances, control means, and the like that constitute the induction heating unit 2, the heater unit 3 and the like located above the roaster grill unit 6. . Further, the temperature of the handle 71 does not rise too much.

  Further, in the present embodiment, since the lamp heater 67 that illuminates the object to be heated 100 is provided in the cooking chamber 65, light emission due to heat radiation of the upper electric heater 61 is suppressed by the heating control, and Even when the state of 100 cannot be confirmed, the cooker can arbitrarily confirm without opening the grill door 7 by illuminating the object to be heated 100 with the lamp heater 67. Further, for example, by causing the lamp heater 67 to emit light during cooking and notifying that cooking is in progress, it is possible to prevent a danger that the cook accidentally touches the grill door 7. Further, a lamp heater 67 that can also be used as a heating means, for example, is provided in the vicinity of the grill door 7 where the temperature is lowered by contact with outside air, and it can be expected to compensate for the decrease. In the finished state, unevenness can be reduced.

  And since the set temperature and the temperature of the cooking chamber 65 are displayed on the upper surface display unit 5 on the upper surface display unit 5, the temperature in the cooking chamber 65 is displayed in real time during cooking, for example, cooking The person can also determine the timing for switching the cooking temperature, the timing for seasoning cooking, and the like, and can obtain a cooking device that enables better cooking. Moreover, the actual control temperature at the time of development evaluation can be easily determined. Moreover, since the display of the upper surface display part 5 and the upper surface operation part 4 which a cook inputs operation based on the display were provided nearby, operability is good and it does not hesitate at every setting.

Embodiment 2. FIG.
In the present embodiment, a high temperature warning display of the grill door 7 performed by the main control unit 11 based on the temperature detected by the door-side thermistor 64 will be described. For example, there is a relationship between the temperature detected by the door-side thermistor 64 and the actual temperature of the grill door 7. For example, if the temperature based on the detection of the door-side thermistor 64 is 90 ° C., the temperature of the grill door 7 is about 70 ° C., and if the temperature based on the detection of the door-side thermistor 64 is 70 ° C., the temperature of the grill door 7 is About 60 ° C. Therefore, a temperature (for example, 70 ° C.) for displaying the high temperature warning is determined in advance. When the main control means 11 determines that the temperature based on the detection by the door-side thermistor 64 has been changed from a temperature lower than 90 ° C. to 90 ° C. or higher based on the temperature-related signal transmitted from the grill heating control means 66. The caution lamp 92 is turned on to display a high temperature caution display. For example, in the door caution lamp 92 of FIG. 4, high temperature caution display is performed by illuminating characters, but teaching can also be performed, for example, by simply emitting an LED. Further, a blinking display or the like may be displayed.

  On the other hand, when the temperature of the grill door 7 tends to decrease after the high temperature caution display, a hysteresis is provided (that is, the temperature at which the door caution lamp 92 is turned on and off is varied). If the main control means 11 determines that the temperature based on the detection by the door-side thermistor 64 has changed from a temperature greater than 70 ° C. to 70 ° C. or less, the main control means 11 extinguishes the door warning lamp 92.

  Here, the display by the door caution lamp 92 is used to teach that the temperature of the door is high. For example, other teaching means (for example, teaching means taught by sound (sound, buzzer, etc.)) is used. May be taught. Further, in this case, a sensor or the like may be provided, and for example, when a person approaches, attention may be urged with a sound or the like.

  Here, in some cooking devices, for example, if the cook does not perform an operation for a certain time, the power is automatically shut off. However, if all the power is turned off and the door warning lamp 92 is extinguished, the original purpose of alerting may not be achieved. Therefore, once the door caution lamp 92 emits light, for example, when there is no operation and a predetermined time elapses, while the door caution lamp 92 is determined to be at a temperature at which the door caution lamp 92 should be emitted, Do not block.

  As described above, according to the second embodiment, based on the temperature detected by the door-side thermistor 64 provided in the vicinity of the grill door 7, the main control means 11 causes the door warning lamp 92 to emit light, and the grill door 7 has a high temperature. Since the caution display is made, the danger of the cook not knowing it can be prevented.

Embodiment 3 FIG.
The main control means 11 stores in the main control storage means 12 data on setting instructions (for example, cooking time, cooking setting temperature, etc.) from the upper surface operation unit 4 regarding cooking by the cook. Then, when the same cooking utensil in the heating cooker is used next time, the main control unit 11 causes the upper surface display unit to display the initial setting value. The cook can transmit a change instruction via the upper surface operation unit 4 at that time and change the initial setting value. However, the setting value changed halfway after the start of cooking is not stored because it is considered as one of the steps related to cooking. By using the previous setting for the next setting, it is possible to eliminate the troublesome setting, particularly when the cook tends to cook many of the same dishes.

It is a figure showing the external appearance of the heating cooker which concerns on Embodiment 1 of this invention. FIG. 4 is a block diagram showing a configuration centering on the configuration of the roaster grill section 6. It is a figure showing the keyboard layout of the upper surface operation part. It is a figure showing the front operation part 8 and the front display part 9. FIG. It is a figure showing processing operation until the inside of cooking cabinet 65 is made to reach preset temperature. FIG. 6 is a diagram illustrating a screen displayed on upper surface display unit 5. It is a figure showing the relationship between the electric power of the electric heaters 61 and 62, and preset temperature. It is a figure showing the relationship between preset temperature and target preset temperature. It is a figure showing the process which carries out constant control of the inside of the cooking chamber 65 to preset temperature.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Top plate, 11 Main control means, 12 Main control memory means, 2 Induction heating part, 21 Left electromagnetic induction coil, 22 Right electromagnetic induction coil, 23 Left temperature detection element, 24 Right temperature detection element, 25 Left induction heating control means , 26 Right induction heating control means, 3 heater section, 31 central heater, 32 central temperature detection element, 33 central heater control means, 4 top operation section, 41 left key, 42 right key, 43 automatic menu key, 44 manual menu key , 45 Thermal UP key, 46 Thermal DOWN key, 47 Start key, 48 Stop key, 5 Top display, 6 Roaster grille, 61 Upper electric heater, 62 Lower electric heater, 63 Back side thermistor, 64 Door side thermistor, 65 Cooking chamber, 66 Grill heating control means, 67 Lamp heater, 7 Grill door, 71 Handle, 8 Front operation section, 8 Thermal adjustment Encoder dial, 82 timer setting dial, 83 power switch, 84 lock key, 85 grill lighting key, 9 front display unit, 91 operation lamp, 92 door Attention light, 100 to be heated, 101 network.

Claims (7)

A plurality of heating means provided in the cooking chamber so as to be positioned above and below the object to be heated;
When the temperature in the cooking chamber reaches the set temperature with the object to be heated in the cooking chamber, the power set lower than the rated power consumption of the heating unit is maximized and supplied to the heating unit. A heating cooker comprising heating control means for controlling electric power.   The cooking device according to claim 1, further comprising display means for displaying the set temperature and / or the temperature in the cooking chamber.   The heating control means supplies power to each heating means such that the power supplied to the heating means located below the object to be heated is larger than the heating means located above the object to be heated. The heating cooker according to claim 1 or 2, wherein electric power to be controlled is controlled.   The cooking device according to any one of claims 1 to 3, further comprising an illuminating means for illuminating the object to be heated in the cooking chamber.   The cooking device according to claim 4, wherein the illumination means is a lamp heater. A temperature detecting element that is provided in the vicinity of a door for taking in and out the article to be heated in the cooking chamber, and that transmits a signal based on the temperature in the cooking chamber;
Determination means for determining whether the door is at a temperature higher than a predetermined temperature based on a signal from the temperature detection element;
A cooking device comprising teaching means for teaching that the temperature of the door is equal to or higher than a predetermined temperature based on the judgment of the judging means. Operation means for transmitting a signal including setting instruction data relating to cooking;
Storage means for storing data of the setting instruction;
Display means for performing display based on the display signal;
Based on the signal transmitted from the operation means, the setting instruction data is stored in the storage means, and when the cooking setting is performed, a display signal for displaying the setting instruction data as an initial set value is displayed on the display means. And a control means for transmitting to the cooking device.

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