JP2015130261A - heating cooker - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heating cooker which eliminates the possibility of interrupting cooking even though cooking requires a long cooking time and which is convenient.SOLUTION: A heating cooker comprises: a left heating coil 11 for heating a cooking device 200 placed on a top plate 1 from under the top plate 1; a left operation part 3a for instructing a heating mode of the left heating coil 11; and a control circuit 16 for controlling a heating operation of the left heating coil 11 based on the heating mode instructed by the left operation part 3a. The control circuit 16 in which a timing of a start for measuring a heating time is preliminarily set depending on a heating mode starts measurement of the heating time when the heating mode is instructed by the left operation part 3a, at the timing preset for the heating mode instructed and stops the heating operation of the left heating coil 11 when the measuring heating time reaches a first time limit for heating.

Description

  The present invention relates to a heating cooker having a function of automatically stopping heating when a time limit for heating elapses due to, for example, forgetting to turn off heating during cooking.

As a conventional heating cooker, there is one that measures the time from the start of heating of the cooking utensil and automatically stops the heating operation of the heating source when the measurement time exceeds a predetermined time limit. (For example, refer to Patent Document 1).
As another cooking device, when the temperature of the cooking utensil heated by the heating source is low, the time limit for stopping the heating operation of the heating source is lengthened, and when the temperature of the cooking utensil is high, the time limit is shortened. (For example, refer to Patent Document 2). In addition, when the time measured from the start of heating reaches a certain time before the time limit, the heating cooker notifies a warning to that effect and allows an extension operation of the time limit to be accepted. When this extension instruction is received, the heating operation of the heating source is extended.

JP 61-38322 A (Claims) Japanese Patent Laid-Open No. 06-221466 (Claims)

The cooking device described in Patent Document 1 has the following problems because the heating time limit is fixed.
For example, when fried food cooking using oil and boiled food cooking are compared, in general, cooking time is longer for boiled food cooking, and cooking temperature is higher for fried food cooking. For this reason, if the heating time limit is set to be relatively long so that the heating source does not stop during boiled food cooking, the user can accidentally take a soba noodle for a long time during fried food cooking. If the oil is separated from the oil, it will be left for a long time with the oil heated at a high temperature, and the oil may ignite and cause a fire.
In order to solve such a problem, if the time limit is set to be relatively short, the heating will stop in the middle of cooking the simmered food. In such a case, the user again operates the heating source. The problem that it must be made arises.

In the heating cooking described in Patent Document 2, for example, during fried food cooking, cooking is not possible because the oil temperature is low during preheating, and cooking is performed so as to maintain a high temperature after completion of preheating, so the preheating time is long. When it becomes, there exists a subject that the remaining cooking time becomes short.
Furthermore, when the user continues the cooking by changing the temperature setting, the measurement time from the start of heating is less than the time limit even though the user is cooking near the heating cooker. When a certain time is reached, a warning is notified and there is a problem that the user feels uncomfortable.
Also, even if the user wants to perform an extension operation due to a warning, if the extension operation cannot be performed immediately if other cooking operations are being performed or the hand is dirty due to preparations for cooking, etc. There is a problem that heating is stopped in time for the reception time.

  The present invention has been made in order to solve the above-described problems, and even if the cooking content has a long cooking time, cooking does not become impossible in the middle, and the cooking device is easy to use. The purpose is to provide.

  The cooking device according to the present invention includes a top plate on which a cooking utensil is placed, a heating means for heating the cooking utensil placed on the top plate from below the top plate, and an operation for instructing a heating mode of the heating means. And a control means for controlling the heating operation of the heating means based on the heating mode instructed by the operation section. The control means is configured such that the timing for starting the measurement of the heating time is preset according to the heating mode. When the heating mode is instructed by the operation unit, the measurement of the heating time is started at the timing set in the instructed heating mode, and the measured heating time reaches the first time limit In addition, the heating operation of the heating means is stopped.

  In the present invention, when a heating mode in which a heating operation pattern according to cooking is assigned by the operation unit is specified, the measurement of time is started at the timing set in the heating mode, When the first time limit is reached, the heating operation of the heating means is stopped. Thus, since the timing of time measurement start differs according to the heating mode, for example, in the heating mode according to cooking that keeps the temperature constant through a preheating process such as fried food cooking, frying pan cooking, etc., from the completion of preheating By starting the time measurement, the cooking time can be secured without being affected by the length of the preheating time. For this reason, it is possible to provide a cooking device that is easy to use without being unable to cook in the middle.

FIG. 3 is a plan view of the heating cooker according to the first embodiment. FIG. 3 is a block diagram illustrating a circuit configuration of the heating cooker according to the first embodiment. 5 is a flowchart showing the operation of the heating cooker according to the first embodiment. The flowchart following FIG. The block diagram which shows the circuit structure of the heating cooker which concerns on Embodiment 2. FIG. FIG. 4 is a block diagram showing a circuit configuration of a heating cooker according to a third embodiment.

Embodiment 1 FIG.
1 is a plan view of a cooking device according to Embodiment 1. FIG.
A cooking device 100 shown in FIG. 1 includes a top plate 1 provided on an upper portion of a box-shaped main body case, a left heating coil, a right heating coil, and a central heating coil disposed under the top plate 1 in the main body case. And a grill cooker 7 installed approximately at the center in the main body case. In this embodiment, one heating coil is used for each of the three heating ports. However, this is only an example, and the number of heating ports and the number of heating coils are limited. is not. That is, one cooking utensil may be a combination of a plurality of heating coils. Moreover, although the heating source has shown in the example of the heating coil, it may replace with a heating coil and may be a radial heater and a gas burner, and the form is not ask | required. Furthermore, the structure without the grill cooker 7 may be sufficient.

  The top plate 1 is made of heat-resistant crystallized glass formed into a quadrilateral. The top plate 1 is attached to the upper part of the main body case in a state where the top plate 1 is mounted on a frame-like frame 2 on the outer periphery. On the top surface of the top plate 1 in the left-right direction, a circular left heating unit 6a and a right heating unit 6b indicating the placement position of the cooking utensil are displayed. A central heating unit 6 c is displayed on the upper surface of the top plate 1. The left heating unit 6a is opposed to the left heating coil, and the right heating unit 6b is opposed to the left heating coil. The central heating unit 6c is opposed to the central heating coil.

  The grill cooker 7 includes a rectangular parallelepiped grille having an opening on the front surface of the main body case, a grill door 7a for opening and closing the opening of the grille, and an upper heater and a lower heater ( For example, a sheathed heater) is provided.

  In the front part of the frame 2, a left operation unit 3a, a right operation unit 3b, and a central operation unit 3c for instructing the heating power of the left heating unit 6a, the right heating unit 6b, and the central heating unit 6c are provided. The left operation unit 3a and the right operation unit 3b are provided with a key switch for instructing a heating mode according to cooking such as deep-fried food cooking or stewed cooking, and a key switch for instructing the heating power of the heating coil. The central operation unit 3c includes a key switch for instructing the heating power of the central heating unit 6c, a key switch for automatically controlling the heating power and temperature in accordance with the cooking menu of the grill cooker 7, and manual heating power, temperature, time, etc. A key switch for instructing is provided. Further, on the front part of the frame 2, a left heating power display unit 5a that displays the heating power of the left heating unit 6a, a right heating power display unit 5b that displays the heating power of the right heating unit 6b, and the heating power of the central heating unit 6c are displayed. A central thermal power display 5c is arranged. In addition, although the operation part is described here as the top plate upper surface side, a part or all of the operation part may be provided on the front surface of the main body case, or placed in a so-called kangaroo pocket and stored in the main body. It is good also as a form to do.

  The left liquid crystal display unit 4a that displays the heating operation of the left heating coil is provided at the left end of the front side of the top plate 1, and the right that displays the heating operation of the right heating coil is provided at the right end of the front side of the top plate 1. A liquid crystal display unit 4b is provided. Further, a central liquid crystal display unit 4c for displaying a heating operation of the central heating coil and the grill cooker 7, a cooking procedure of the grill cooker 7, setting contents and warning contents concerning the entire system, etc. is provided at the center of the front side of the top plate 1. Is provided.

  At the right end of the front surface of the main body case, a power switch that can turn on and off the heating cooker 100 is provided.

  In the rear part of the frame 2, there are provided intake ports 8 a and 8 b for taking air into the main body case, and an exhaust port 9 for exhausting air taken into the main body case and air inside the grill cooker 7. ing. Although not illustrated, the intake ports 8a and 8b and the exhaust port 9 are covered with a cover having a plurality of openings.

Next, a circuit configuration on the left heating coil side will be described as an example with reference to FIG.
FIG. 2 is a block diagram showing a circuit configuration of the heating cooker according to the first embodiment.
As described above, the left heating coil 11 installed below the top plate 1 faces the left heating unit 6a. For example, the inner heating coil 11a and the outer periphery of the inner heating coil 11a are spaced apart from each other. It is comprised with the single coil of the outer peripheral side heating coil 11b wound by having. The left heating coil 11 is supported by a coil support 12. The right heating coil has the same configuration as the left heating coil 11, and the central heating coil is a single coil having a gap at the center of the coil.

  For example, a thermistor 13 (temperature sensor) is installed in the gap between the inner peripheral heating coil 11 a and the outer peripheral heating coil 11 b so as to be in close contact with the back surface of the top plate 1. The thermistor 13 generates a signal (for example, voltage) based on the heat transmitted from the cooking utensil 200 to the top plate 1 and inputs the signal to the temperature detection circuit 14. The temperature detection circuit 14 detects the temperature of the cooking utensil 200 based on a signal from the thermistor 13 and inputs the detected temperature to the control circuit 16. In FIG. 2, the thermistor 13 is single, but the temperature of the cooking utensil 200 may be detected by a plurality of thermistors 13. The thermistor 13 is installed in the right heating coil in the same manner as the left heating coil 11, and is installed in the center of the central heating coil. The temperature sensor is not limited to the thermistor, but may be an infrared sensor. Moreover, the structure which used the thermistor and the infrared sensor together may be sufficient.

  The inverter circuit 15 converts a DC voltage into an AC based on an input of a drive signal (PWM) from the control circuit 16 and supplies a high frequency current to the left heating coil 11. The inverter circuit 15 is also provided in each of the right heating coil and the center heating coil.

  The cooling fan 17 is provided in the main body case of the heating cooker 100, and cools the left heating coil 11, the inverter circuit 15, and the like. The cooling fan 17 is also provided on the right heating coil side, and cools the right heating coil, the central heating coil, the inverter circuit 15 and the like in the same manner as described above.

  For example, a voice recognition unit 18 and a voice output unit 19 are provided at the right end of the front surface of the main body case. The voice recognition unit 18 recognizes the voice of the user. For example, when the voice of the left heating coil 11 is extended, the voice recognition unit 18 inputs an instruction to extend the left heating coil 11 to the control circuit 16. The voice output unit 19 urges, for example, a warning that the heating will be stopped soon before the control circuit 16 stops the heating operation of the left heating coil 11 or an operation to perform an extension operation if the heating is to be extended. Announcement is announced by voice or buzzer sound. Note that the voice output unit 19 notifies the above-described warning or the like by voice or a buzzer sound when stopping the heating operation of the right heating coil or stopping the heating operation of the central heating coil.

  When the thermal power instructed by the left operation unit 3a is input, the control circuit 16 generates a drive signal so that the power set according to the thermal power and the output power of the inverter circuit 15 are substantially the same, The inverter circuit 15 is driven by the drive signal. The output power of the inverter circuit 15 is detected by power detection means. This electric power detection means detects from the electric current which flows into the left heating coil 11, and the alternating voltage input into the heating cooker 100, for example. The control circuit 16 performs the above-described operation for the inverter circuits provided in the right heating coil and the central heating coil, respectively.

  In the control circuit 16, the timing for starting the measurement of the heating time is set in advance according to the heating mode. For example, when the heating mode is instructed by the left operation unit 3a, the time is set at the timing set in the heating mode. When the measured heating time reaches a first time limit (for example, 45 minutes), the heating operation of the left heating coil 11 is stopped.

  For example, when a heating mode having a preheating mode (such as fried food cooking or frying pan cooking) is instructed by the left operation unit 3a, the control circuit 16 starts and measures the heating time at the timing of completion of preheating. When the instruction for extending the time is received from the voice recognition unit 18 or the instruction for cooking from the left operation unit 3a before the heating time reaches the first time limit, the time is switched to the second time limit and extended. Measurement of the heating time is started, and when the measured heating time reaches a second time limit (for example, 60 minutes), the heating operation of the left heating coil 11 is stopped. In addition, the instruction | indication regarding cooking is an instruction | indication based on operation, such as a change of preset temperature, during cooking. The second time limit (60 minutes) is set longer than the first time limit (45 minutes), but may be set shorter than the first time limit or may be the same time.

  In addition, the control circuit 16 starts the measurement of the heating time at the heating start timing when, for example, there is no preheating mode by the left operation unit 3a, a heating mode in which cooking such as boiling or boiling is performed, or simply when a thermal power is instructed. However, when an instruction to extend the time from the voice recognition unit 18 or an instruction about cooking from the left operation unit 3a is received before the measured heating time reaches the first time limit, the time is switched to the second time limit and extended. The measurement of the heating time is newly started from the switching, and when the measured heating time reaches the second time limit, the heating operation of the left heating coil 11 is stopped. In addition, the instruction | indication regarding cooking is an instruction | indication based on operation, such as heating adjustment, a change of a thermal power, and the time setting of a cut-off timer, during cooking.

  In addition, the control circuit 16, for example, during the measurement of the heating time when the cooking utensil 200 is being heated by the left heating coil 11, the heating time is the third one of the first time limit or the second time limit. When the set time (for example, 5 minutes) is reached (40 minutes), a command to notify the warning that the heating operation of the left heating coil 11 is stopped is given to the audio output unit 19 and the left liquid crystal display unit 4a. Output to inform. Further, the control circuit 16 performs the heating operation of the left heating coil 11 when the measured heating time reaches the first time limit or the second time limit and the heating operation of the left heating coil 11 is stopped. A command for informing the stop is output to the audio output unit 19 and the left liquid crystal display unit 4a to be notified. Although the warning is notified from the audio output unit 19 and the left liquid crystal display unit 4a, the warning may be notified from either one.

The display content when informing from the left liquid crystal display unit 4a may be a sentence, the remaining time from before the third set time to the first time limit, or the like, or expressed by changing the color of the backlight. Good. Furthermore, the user may be prompted to perform an extension operation by changing the display form such as blinking a backlight or characters. Further, an LED may be provided separately from the left liquid crystal display unit 4a and the LED may blink. Furthermore, as the measurement time approaches the first time limit, the characters on the left liquid crystal display unit 4a may be enlarged, and the backlight of the left liquid crystal display unit 4a and the blinking speed of the LEDs may be increased. .
In addition, when the measurement time reaches the third set time before the first time limit during the heating operation of the right heating coil, a voice command is issued to issue a warning to stop the heating operation of the right heating coil. The information is output to the unit 19 or the right liquid crystal display unit 4b for notification. Also, when the measurement time reaches the third set time before the first time limit during the heating operation of the central heating coil, a warning to stop the heating operation is sent to the audio output unit 19 and the center in the same manner as described above. Notification is made from the liquid crystal display unit 4c.

The operation of the cooking device configured as described above will be described with reference to FIGS. 3 and 4.
FIG. 3 is a flowchart showing the operation of the heating cooker according to Embodiment 1, and FIG. 4 is a flowchart following FIG.
The control circuit 16 drives the inverter circuit 15 based on the heating mode instructed by the left operation unit 3a, supplies high-frequency power to the left heating coil 11, and starts heating the cooking utensil 200 on the left heating unit 6a. (S1). Then, the control circuit 16 determines whether or not the instructed heating mode has a preheating mode (S2). When the heating mode does not include the preheating mode, the control circuit 16 proceeds to S21 (see FIG. 4), but when the heating mode has the preheating mode, the control circuit 16 determines whether the preheating is completed (S3).

  When the preheating mode is not completed, the control circuit 16 stands by in S3. When the preheating mode is completed, the control circuit 16 starts measuring the heating time with the completion of the preheating as a timing (S4). Then, the control circuit 16 determines whether or not there is an instruction to turn off the heating operation of the left heating coil 11 from the left operation unit 3a (S5). When the control circuit 16 is instructed to turn it off, the control circuit 16 stops the heating operation of the left heating coil 11, and notifies that effect from the audio output unit 19 and the left liquid crystal display unit 4a (S11). Further, when the control circuit 16 does not receive an instruction to turn off the heating operation of the left heating coil 11, it determines whether or not there is an instruction to extend the time or an instruction regarding cooking from the voice recognition unit 18 or the left operation unit 3a (S6). ). This extension instruction or cooking instruction is an instruction to extend the first time limit for heating due to forgetting to cut. As described above, this cooking instruction is an instruction based on an operation such as changing the set temperature during cooking.

  When the control circuit 16 receives a time extension instruction or a cooking instruction, the process proceeds to S12. However, when there is no time extension instruction or a cooking instruction, the measured heating time is the third time limit of the first time limit. It is determined whether or not the set time is reached (5 minutes before the first time limit is reached) (S7). When the heating time being measured has not reached the third set time before the first time limit, the control circuit 16 returns to S5 and repeats the above-described operation (S5 to S7). When the heating time during measurement reaches the third set time before the first time limit, the control circuit 16 displays a warning to stop the heating operation of the left heating coil 11 on the left liquid crystal display unit 4a. At the same time, a warning that the heating operation of the left heating coil 11 is stopped is notified from the voice output unit 19 by voice or buzzer sound (S8). At this time, for example, the control circuit 16 notifies the remaining time from the left liquid crystal display unit 4a and the audio output unit 19 every time one minute elapses.

  Then, the control circuit 16 determines whether or not there has been a time extension instruction or a cooking instruction from the left operation unit 3a or the voice recognition unit 18 after the start of warning notification (S9). The control circuit 16 proceeds to S12 when there is a time extension instruction or a cooking instruction, but when there is no time extension instruction or a cooking instruction, whether the heating time during measurement has reached the first time limit or not. Is determined (S10). When the heating time has not reached the first time limit, the control circuit 16 returns to S9 and repeats the above-described operation (S9, S10). The control circuit 16 performs the heating operation of the left heating coil 11 when the heating time during measurement reaches the first time limit without receiving a time extension instruction or a cooking instruction during the third set time (5 minutes). Is stopped, and the fact is notified from the sound output unit 19 and the left liquid crystal display unit 4a (S11).

  When the control circuit 16 receives an instruction for extending the first time limit or an instruction regarding cooking in either S6 or S9, the control circuit 16 switches to the second time limit and extends the time, and starts a new measurement of the heating time from the time of the change. (S12). Then, the control circuit 16 determines whether or not there is an instruction to turn off the heating operation of the left heating coil 11 from the left operation unit 3a (S13), and when there is an instruction to turn off, the heating operation of the left heating coil 11 is stopped. Then, this is notified from the audio output unit 19 and the left liquid crystal display unit 4a (S11).

  Further, when the control circuit 16 does not receive an instruction to turn off the heating operation of the left heating coil 11, it determines whether or not there is an instruction to extend the time or an instruction regarding cooking (S14). When the control circuit 16 receives a time extension instruction or a cooking instruction, the control circuit 16 returns to S12, switches to the second time limit again, and starts to measure the heating time from the time of the switching. When there is no time extension instruction or cooking instruction, the control circuit 16 determines whether the heating time during measurement has reached the third set time before the second time limit (S15).

  When the heating time during measurement has not reached the third set time before the second limit time, the control circuit 16 returns to S13 and repeats the above-described operation (S13 to S15). When the heating time during measurement reaches the third set time before the second limit time, the control circuit 16 issues a warning that the heating operation of the left heating coil 11 is stopped after the third set time to the left liquid crystal display unit 4a. And the voice output unit 19 (S16). Then, the control circuit 16 determines whether or not there is a time extension instruction or an instruction related to cooking (S17), and if there is no instruction, it is determined whether or not the heating time during measurement has reached the second time limit. Determine (S18). When there is no instruction regarding cooking and the heating time during measurement reaches the second time limit, the control circuit 16 stops the heating operation of the left heating coil 11 and informs that to the left liquid crystal display unit 4a and the audio output unit 19. (S11).

  When the control circuit 16 determines in S2 that the heating mode does not include the preheating mode or that the heating power is simply instructed, the control circuit 16 starts measuring time from the start of heating (S21). Then, the control circuit 16 determines whether there is an instruction to turn off the heating operation of the left heating coil 11 from the left operation unit 3a (S22). When there is an instruction to turn it off, the control circuit 16 stops the heating operation of the left heating coil 11, and notifies the fact from the left liquid crystal display unit 4a and the sound output unit 19 (S28). When there is no instruction to turn off the heating operation of the left heating coil 11, the control circuit 16 determines whether there is an instruction to extend the time or an instruction related to cooking from the left operation unit 3a (S23). As described above, the instruction relating to cooking is an instruction based on operations such as heating / discharging, changing the heating power, and setting the time of the cut-off timer during cooking.

  The control circuit 16 proceeds to S29 when there is a time extension instruction or an instruction regarding cooking, but when there is no such instruction, has the heating time during measurement reached the third set time before the first time limit? It is determined whether or not (S24). When the measurement time does not reach the third set time before the first time limit, the control circuit 16 returns to S22 and repeats the above-described operation (S22 to S24). The control circuit 16 warns that the heating operation of the left heating coil 11 is stopped after the third set time (5 minutes) when the heating time during measurement reaches the third set time before the first limit time. While displaying and notifying on the left liquid crystal display part 4a, a warning that the buzzer sound or the heating operation of the left heating coil 11 is stopped is notified by sound from the sound output part 19 (S25). At this time, for example, the control circuit 16 notifies the remaining time from the left liquid crystal display unit 4a and the audio output unit 19 every time one minute elapses.

  Then, the control circuit 16 determines whether there is a time extension instruction or an instruction regarding cooking after notifying the warning (S26), and when there is any instruction, the process proceeds to S29, but there is no instruction. If it is determined, it is determined whether the heating time during measurement has reached the first time limit (S27). When the heating time has not reached the first time limit, the control circuit 16 returns to S26 and repeats the above-described operation (S26, S27). The control circuit 16 heats the left heating coil 11 when the heating time during measurement reaches the first time limit without any time extension instruction or cooking instruction during the third set time (5 minutes). The operation is stopped, and the fact is notified from the left liquid crystal display unit 4a and the audio output unit 19 (S28).

  When there is a time extension instruction or an instruction regarding cooking in either S23 or S26, the control circuit 16 switches to the second time limit and extends the time, and newly starts the measurement of the heating time from that time (S29). ). Then, the control circuit 16 determines whether or not there is an instruction to turn off the heating operation of the left heating coil 11 from the left operation unit 3a (S30), and when there is an instruction to turn off, the heating operation of the left heating coil 11 is stopped. Then, the fact is notified from the left liquid crystal display unit 4a and the audio output unit 19 (S28).

  Further, when there is no instruction to turn off the heating operation of the left heating coil 11, the control circuit 16 determines whether or not there is an instruction to extend the time or an instruction related to cooking from the left operation unit 3a (S31). The control circuit 16 returns to S29 when there is a time extension instruction or an instruction regarding cooking, and switches to the second time limit for extension again, and starts measuring the heating time anew from the switching. On the other hand, when there is no time extension instruction or cooking instruction, the control circuit 16 determines whether the heating time during measurement has reached the third set time before the second time limit (S32).

  When the measurement time has not reached the third set time before the second time limit, the control circuit 16 returns to S30 and repeats the above operation (S30 to S32). When the heating time during measurement reaches the third set time before the second limit time, the control circuit 16 issues a warning that the heating operation of the left heating coil 11 is stopped after the third set time to the left liquid crystal display unit 4a. And the voice output unit 19 (S33). Then, the control circuit 16 determines whether or not there is a time extension instruction or an instruction related to cooking (S34), and if there is no instruction, it is determined whether or not the heating time during measurement has reached the second time limit. Determine (S35). When there is no instruction regarding cooking and the heating time during measurement reaches the second time limit, the control circuit 16 stops the heating operation of the left heating coil 11 and informs that to the left liquid crystal display unit 4a and the audio output unit 19. (S28).

As described above, in the first embodiment, the following effects are obtained.
(1) In the heating mode having the preheating mode, since the measurement of the heating time is started from the completion of the preheating, the cooking time can be ensured without being affected by the length of the preheating time. For this reason, heating stops in the middle of cooking, cooking does not become impossible, and a user-friendly cooking device can be provided.
(2) In the above heating mode, when an instruction for extending the time or an instruction relating to cooking is received, the time is switched to the second time limit and extended to start the measurement of the heating time. Even if cooking is prolonged, cooking time can be secured.
(3) When a time extension instruction or an instruction regarding cooking is received from the voice recognition unit 18, the time is switched to the second time limit, and the measurement of the heating time is newly started from that time. With this configuration, even when the user is near the heating cooker and the extension operation cannot be performed without releasing his hand, the extension instruction can be given by voice, so the troublesomeness of the operation can be reduced.
(4) If heating is started with no preheating mode or simply instructed by thermal power, time measurement is started at the heating start timing separately from the heating mode having the preheating mode, and an instruction to extend the time is given. Or when it receives the instruction | indication regarding cooking, it switches to the 2nd time limit, is extended, and the measurement of a heating time is newly started. With this configuration, a warning is issued at an optimal time according to the heating mode, so that the user does not feel uncomfortable.

Embodiment 2. FIG.
FIG. 5 is a block diagram showing a circuit configuration of the heating cooker according to the second embodiment. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1. FIG.
In the second embodiment, the human sensor 20 is added to the cooking device of the first embodiment, and the other configuration is the same as that of the first embodiment. Further, the control circuit 16 according to the second embodiment operates in accordance with the detection / non-detection of the human body in addition to the operations based on the flowcharts shown in FIGS. 3 and 4.
The human sensor 20 shown in FIG. 5 is provided, for example, on the right side of the front surface of the cooking device 100, detects heat (infrared rays) emitted from the human body, generates a signal according to the detected change in the amount of heat, Input to the control circuit 16. The control circuit 16 determines that the human body is detected by the human sensor 20 when the signal from the human sensor 20 is input.

  For example, the control circuit 16 shortens the first time limit or the second time limit when the state in which the human body is not detected by the human sensor 20 continues for the fifth set time, and then the human body is detected by the human sensor 20. When it is determined that it has been detected, the shortened first time limit or second time limit is returned to the original time limit. When the heating time during measurement reaches the third set time before either the first limit time or the second limit time, the control circuit 16 stops the heating operation of the left heating coil 11 after the third set time. A command for informing the warning is output to the left liquid crystal display unit 4a and the audio output unit 19 for notification.

  The control circuit 16 stops the heating operation of the left heating coil 11 after outputting to the left liquid crystal display unit 4a and the sound output unit 19 a command for notifying the warning when the human sensor 20 has not detected the human body. In the meantime, when the human body is detected by the human sensor 20, the left liquid crystal display unit 4a and the audio output unit 19 notify again that the heating operation of the left heating coil 11 will soon be stopped at the timing when the human body is detected. Command to output to the notification means. When the human sensor is detected by the human sensor 20 after the heating operation of the left heating coil 11 is stopped after the human sensor is not detected by the human sensor 20, the control circuit 16 performs the heating operation of the left heating coil 11. A command for informing again that the operation has been stopped is output to the left liquid crystal display unit 4a and the audio output unit 19 for notification.

  In the second embodiment, when cooking in the heating mode having the preheating mode, the control circuit 16 does not receive an instruction to turn off the heating operation from the left operation unit 3a (S5), and the left operation unit 3a or voice recognition is performed. When there is no time extension instruction from any of the units 18 (S6), and when no human body is detected during the fifth set time, it is assumed that there is no user near the heating cooker 100, and the left heating A warning that the heating operation of the coil 11 is stopped is notified from the left liquid crystal display unit 4 a and the audio output unit 19. When the human sensor is detected by the human sensor 20 after the heating operation of the left heating coil 11 is stopped, the control circuit 16 informs that the heating operation of the left heating coil 11 is stopped and the left liquid crystal display unit 4a. Notification from the unit 19.

  Further, when cooking in the heating mode without the preheating mode, the control circuit 16 does not receive an instruction to turn off the heating operation from the left operation unit 3a (S22), and does not receive an instruction regarding cooking from the left operation unit 3a (S23). Further, when the human body is not detected during the fifth set time, it is assumed that there is no user near the heating cooker 100 and a warning that the heating operation of the left heating coil 11 is stopped is displayed on the left liquid crystal display unit. Notification is made from 4a and the audio output unit 19. When the human sensor is detected by the human sensor 20 after the heating operation of the left heating coil 11 is stopped, the control circuit 16 indicates that the heating operation of the left heating coil 11 has been stopped as described above. Notification is given from the unit 4a and the audio output unit 19.

  As described above, according to the second embodiment, when no human body is detected by the human sensor 20 during the fifth set time, the first time limit or the second time limit is shortened, and then the human sensor. When it is determined by 20 that a human body is detected, the shortened first time limit or second time limit is returned to the original time limit. In this way, when the user is not on the cooking device 100 side, the first time limit or the second time limit is shortened, so safety is improved and the user moves to the cooking device 100 side. When returning, the first time limit or the second time limit is returned to the original time limit, so that comfortable cooking is possible.

  In addition, when a human body is detected by the human sensor 20 from when the warning is issued until the heating operation of the left heating coil 11 is stopped, the heating operation of the left heating coil 11 is performed at the timing when the human body is detected. When the human sensor is detected by the human sensor 20 after the heating operation of the left heating coil 11 is stopped, the heating operation of the left heating coil 11 is stopped at the timing when the human body is detected. Notify you again. With this configuration, when the user returns, it is possible to recognize that it will stop soon, and if necessary, the extension operation can be prompted. It is possible to prompt an operation such as resetting the heating power as necessary.

Embodiment 3 FIG.
FIG. 6 is a block diagram showing a circuit configuration of the heating cooker according to the third embodiment. In addition, the same code | symbol is attached | subjected to the part similar to Embodiment 1. FIG.
In the third embodiment, the storage unit 21 in which the first time limit and the second time limit are stored in the heating cooker of the second embodiment and the warning information notified from the control circuit 16 by wireless communication. The transmitting / receiving unit 30 to transmit and the warning information from the transmitting / receiving unit 30 via wireless communication, a terminal device (for example, a mobile phone 33 owned by the user, a tablet) via a repeater 32 on a communication network built indoors 34, etc.) and a communication controller 31 for informing the user.

  As the above-described communication network, wireless LAN or wireless communication at a specific low power is used. The wireless LAN is a local area network that transmits and receives data by wireless communication, and is also called a wireless LAN. Specified small power is the power of the antenna for wireless communications that is 1 W or less (originally 10 mW or less but the law was revised). Wireless communication with specific low power can be used without the need for

  In addition to the above-described functions, the communication controller 31 monitors, for example, the amount of power used by the home appliance to be controlled. If the set amount of power is likely to be exceeded, the communication controller 31 automatically switches off the home appliance. It has functions to control the air conditioner according to the room temperature, and to control the lighting equipment according to the brightness of the room.

  The control circuit 16 according to the third embodiment has a command for notifying the warning that the heating operation of the left heating coil 11 is stopped or the heating operation is stopped when cooking in the heating mode having the preheating mode. Is output to the left liquid crystal display unit 4a and the audio output unit 19 (S8 or S16), the warning information is transmitted from the transmission / reception unit 30 to the communication controller 31. The communication controller 31 transmits the received warning information to the mobile phone 33 and the tablet 34 owned by the user via the repeater 32 to notify the user.

  Further, when cooking in a heating mode without a preheating mode, the control circuit 16 displays a command to stop the heating operation of the left heating coil 11 or to notify a warning that the heating operation has been stopped on the left liquid crystal display. When output to the unit 4a and the audio output unit 19 (S25 or S33), the warning information is transmitted from the transmission / reception unit 30 to the communication controller 31. The communication controller 31 transmits the received warning information to the mobile phone 33 and the tablet 34 owned by the user via the repeater 32 to notify the user.

  In the third embodiment, the first time limit or the second time limit can be changed according to the user's preference. In this case, numerical values of the first time limit or the second time limit are stored in the storage unit 21 for the left heating coil 11, the right heating coil, and the center heating coil, respectively. For example, when one or both of the first time limit and the second time limit are instructed by the left operation unit 3a, the control circuit 16 sets the first time limit and the second time limit of the left heating coil 11 according to the instruction. Either one or both times are changed and stored in the storage unit 21. These time limits may be set for each heating mode.

  As described above, according to the third embodiment, a warning that the heating operation of the left heating coil 11 is stopped or the heating operation is stopped is output to the left liquid crystal display unit 4a and a sound output regardless of the presence or absence of the preheating mode. When notified from the unit 19, the warning information is transmitted to the mobile phone 33 and the tablet 34 owned by the user via the transmission / reception unit 30, the communication controller 31, and the repeater 32 for notification. With this configuration, even when the user is away from the heating cooker, the heating operation can be stopped or a warning to the effect that the heating operation has been stopped can be notified. An operation such as setting can be prompted.

  Moreover, since the 1st time limit of heating or the 2nd time limit can be changed according to a user preference, the usability of a heating cooker improves.

  In the first, second, and third embodiments, in the heating mode having the preheating mode, the measurement of the heating time is started from the completion of the preheating (S4), and in the heating mode without the preheating mode, the time from the heating start is started. (S21), in addition to this, during cooking, when the temperature of the cooking utensil 200 detected by a temperature sensor such as the thermistor 13 falls within a predetermined time, You may make it start time measurement newly from the time. With this configuration, the time measurement is started after detecting the temperature drop when the ingredients are added, so for example, even when many ingredients are cooked, the necessary cooking time is ensured. And the discomfort of receiving a warning at the time from the start of heating is eliminated.

Furthermore, in Embodiments 1, 2, and 3, when there is an instruction to extend the time in S14, or when there is an instruction regarding cooking in S31, it is switched again to the second time limit and extended. In addition, when the continuous measurement time of the heating operation from the start of heating of the left heating coil 11 reaches the fourth time limit longer than the first time limit or the time limit longer than the second time limit. When the heating operation of the left heating coil 11 is stopped and the third set time before the fourth time limit is reached, the heating operation of the left heating coil 11 is temporarily stopped because further cooking is dangerous. You may make it alert | report a warning to that effect. With this configuration, for example, it is possible to continue to falsely detect the input of ingredients during cooking of deep-fried food, to continuously extend without limitation, to continuously heat, prevent the danger that the oil temperature will rise and lead to a fire, and to improve safety it can. Note that the fourth time limit may be changed depending on the heating mode.
In addition, when changing the setting of the first time limit and the second time limit to a desired time, the time limit may be set to a range equal to or less than the fourth time limit to prevent a dangerous time from being set. Good.

  In the first, second, and third embodiments, the first time limit, the second time limit, and the fourth time when the temperature of the cooking utensil 200 detected by a temperature sensor such as the thermistor 13 exceeds a preset threshold value. The time limit may be shortened, and the first time limit, the second time limit, and the fourth time limit may be increased when the temperature of the cooking utensil 200 is equal to or lower than the threshold. Due to this configuration, when the temperature is high, the time limit is shortened by judging the cooking of the stir-fried food that is heated with a strong heating power in a short time. Since the warning is given at a time suitable for cooking by determining that the cooking time is longer, the user will not feel uncomfortable when receiving a warning at an unintended timing. The time may be changed depending on the set temperature instead of the temperature of the temperature sensor, or may be changed depending on the heating mode. Furthermore, you may change with the magnitude | size of a thermal power.

  Moreover, in Embodiment 1, 2, 3, although demonstrated in the case of the left heating coil 11, it is the same also in the case of a right heating coil and a center heating coil. Further, the first time limit, the second time limit, and the fourth time limit may be individually set according to the diameter of each heating coil and the maximum output power.

  In the first, second and third embodiments, the heating means has been described as an example of the induction heating coil. However, the heating means may be a gas stove, and the form of the heating source is not limited.

  DESCRIPTION OF SYMBOLS 1 Top plate, 2 frames, 3a Left operation part, 3b Right operation part, 3c Central operation part, 4a Left liquid crystal display part, 4b Right liquid crystal display part, 4c Central liquid crystal display part, 5a Left thermal power display part, 5b Right thermal power display Part, 5c central heating power display part, 6a left heating part, 6b right heating part, 6c central heating part, 7 grill cooker, 7a grill door, 8a, 8b inlet, 9 exhaust outlet, 11 left heating coil, 11a inner circumference Side heating coil, 11b outer peripheral side heating coil, 12 coil support base, 13 thermistor, 14 temperature detection circuit, 15 inverter circuit, 16 control circuit, 17 cooling fan, 18 voice recognition unit, 19 voice output unit, 20 human sensor, 21 memory | storage part, 30 transmission / reception part, 31 communication controller, 32 repeater, 33 mobile phone, 34 tablet, 100 heating cooker, 200 tone Scientific instruments.

Claims (16)

A top plate on which cooking utensils are placed;
Heating means for heating the cooking utensil placed on the top plate from below the top plate;
An operation unit for instructing a heating mode of the heating unit;
Control means for controlling the heating operation of the heating means based on the heating mode instructed by the operation unit;
The control means sets the heating time measurement start timing according to the heating mode in advance, and when the heating mode is instructed by the operation unit, heating is performed at the timing set in the instructed heating mode. A cooking device characterized by starting time measurement and stopping the heating operation of the heating means when the measured heating time reaches the first time limit.   2. The cooking device according to claim 1, wherein when the heating mode has a preheating mode, the control unit starts measuring the heating time with the completion of preheating of the cooking utensil as a timing.   3. The cooking device according to claim 1, wherein when the heating mode does not include a preheating mode, the control unit starts measuring the heating time at the timing when heating of the cooking utensil is started. 4.   The control means switches from the first time limit to the second time limit and extends when receiving an instruction regarding cooking from the operation unit before the heating time being measured reaches the first time limit, The heating operation of the heating means is stopped when the measurement of the heating time is newly started from the switching time and the measured heating time reaches the second time limit. The cooking device according to any one of? 3. It has a voice recognition unit that recognizes voice,
When the control means receives a time extension instruction from the voice recognition unit before the measured heating time reaches the first time limit, the control means switches from the first time limit to the second time limit and extends it. Then, the measurement of the heating time is newly started from the switching time, and the heating operation of the heating means is stopped when the measured heating time reaches the second time limit. Item 5. The cooking device according to any one of Items 1 to 4. Providing a notification means,
The control means warns that the heating operation of the heating means is stopped when the measured heating time reaches a third set time before either the first time limit or the second time limit. The cooking device according to any one of claims 4 and 5, wherein a command for informing is output to the notification means.   The control means indicates that when the measured heating time reaches the first time limit or the second time limit and the heating operation of the heating means is stopped, the heating operation of the heating means is stopped. The cooking device according to claim 6, wherein a command for notification is output to the notification means.   When the continuous measurement time of the heating operation of the heating means reaches a fourth time limit that is longer than the longer time limit of the first time limit or the second time limit, the control means The heating cooker according to any one of claims 4 to 7, wherein the heating operation is stopped.   The cooking device according to claim 8, wherein the measurement start timing of the fourth time limit is a start time of the heating operation of the heating means. A temperature sensor for detecting the temperature of the cooking utensil;
When the temperature of the cooking utensil detected by the temperature sensor is lower than the previously detected temperature, the control means newly measures the first time limit or the second time limit from that time. The cooking device according to any one of claims 4 to 9, wherein the cooking device is started. It has a human sensor that detects the human body,
The control means shortens the first time limit or the second time limit when the state in which the human body is not detected by the human sensor continues for a fifth set time, and then the human body is detected by the human sensor. When detected, the shortened first time limit or second time limit is returned to the original time limit, and the measured heating time is either the first time limit or the second time limit. The heating according to any one of claims 6 to 10, wherein when the time is reached, a command for informing a warning to stop the heating operation of the heating unit is output to the notification unit. Cooking device.   The control means outputs the instruction for notifying the warning to the notifying means in a state in which no human body is detected by the human sensor until the heating operation of the heating means is stopped. When the human body is detected by the sensor, a command for informing again that the heating operation of the heating unit is about to be stopped is output to the notification unit, and the human body sensor is not detected by the human sensor. 12. The heating according to claim 11, wherein when a human body is detected by the human sensor after the heating operation is stopped, a command for re-notifying that the heating operation of the heating unit is stopped is output to the notification unit. Cooking device. A transmission / reception unit for transmitting information on the warning output from the control means;
13. The communication controller according to claim 6, further comprising: a communication controller configured to transmit the warning information from the transmission / reception unit to a terminal device through a communication network built in a room and notify the terminal device. The heating cooker described in 1. A storage unit,
The cooking device according to any one of claims 4 to 13, wherein the numerical value of the first time limit or the second time limit is stored in the storage unit in advance for each heating mode.   The cooking device according to claim 14, wherein the control unit changes a numerical value of the first time limit or the second time limit stored in the storage unit based on an instruction from the operation unit. .   The cooker according to claim 14 or 15, wherein the numerical values of the first and second time limits stored in the storage unit are equal to or less than the fourth time limit.

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