JP6009496B2 - Cooking equipment - Google Patents

Description

  The present invention relates to a cooking device including a human sensor.

  2. Description of the Related Art Conventionally, a cooking device that heats an object to be cooked by a burner has a human sensor that detects a human body existing in the vicinity of the operation unit of the cooking device, and depending on whether the human sensor is detected by the human sensor. The structure which adjusted the thermal power with respect to a foodstuff is known (for example, refer patent document 1, 2).

  In the cooking device described in Patent Document 1, the temperature of the cooking object is monitored during cooking, and when the temperature of the cooking object reaches the upper limit temperature, the burner is extinguished or the burning power of the burner is reduced. Yes. The upper limit temperature when the human body is detected by the human sensor is set higher than the upper limit temperature when the human body is not detected by the human sensor.

  In the heating and cooking apparatus described in Patent Document 2, when the state in which the human body is not detected by the human sensor continues for more than the specified time during cooking (tempura cooking), the burner is extinguished or the burning power of the burner is reduced. ing.

JP-A-8-200747 JP 2010-14372 A

  In the heating and cooking apparatus described in Patent Documents 1 and 2, when the human body is not detected by the human sensor during cooking, control is performed to extinguish the burner or reduce the burning power of the burner under certain conditions. Is going.

  However, the present inventors have found that depending on the contents of cooking, it may be contrary to the user's intention to extinguish the burner or reduce the burner's thermal power in this way. did.

  This invention is made | formed in view of this background, and it aims at providing the heating cooking apparatus which prevented that the heating power with respect to a to-be-cooked object decreased against a user's will during cooking. .

The present invention has been made to achieve the above object, and the cooking device of the present invention comprises:
A heating unit for heating a cooking container in which an object is to be cooked;
A heating power changing section for changing the heating power of the heating section;
A temperature sensor for detecting the temperature of the cooking object;
A human sensor that detects the human body in the vicinity,
A cooking control unit that performs automatic operation in a cooking mode that controls the heating power of the heating unit according to a preset operation according to a selection operation by a user;
When the cooking container is heated by the heating unit in a state where the automatic operation in the cooking mode is not performed, the heating power of the heating unit is equal to or higher than a predetermined upper limit heating power, and the human sensor detects the human body. When the state that is not detected continues for a predetermined determination time or more, a high temperature prevention unit that performs a high temperature prevention process for reducing the heating power of the heating unit by the heating power change unit,
The heating is performed to boil the water in the cooking container when the cooking container is heated by the heating unit in a state where the automatic operation by the cooking mode is not executed , A water heating detection unit for detecting based on the detection temperature of the temperature sensor;
When the water heating detection unit detects that the heating unit is heated to boil water in the cooking container, the high temperature prevention prohibition prohibits the high temperature prevention process by the high temperature prevention unit. And a section.

  According to this invention, by performing the said high temperature prevention process by the said high temperature prevention part, for example in the middle of tempura cooking, while a user leaves | separates from a heating cooking apparatus, to-be-cooked object becomes high temperature. Can be prevented.

  However, when the user tries to boil hot water by putting water in a cooking container such as a kettle or a pan, if the high temperature prevention process is performed, a result contrary to the intention of the user may be caused. That is, when a user tries to boil hot water by heating the cooking container containing water by the heating unit, the heating power changing unit near the maximum heating power of the heating unit to boil the hot water in a short time It is common to set to. In this case, it is rare that the user stays on the spot until the hot water is boiled, and the user often leaves the cooking device temporarily to perform other cooking.

  And, for example, when a large amount of water is put in a pan to heat noodles such as pasta and heated, when the amount of water in the cooking container is large and the time required for boiling the water is equal to or longer than the determination time In addition, when the high temperature prevention process is performed by the high temperature prevention unit, the heating power of the heating unit decreases even though the water in the cooking container has not yet boiled. As a result, the boiling of water in the cooking container is delayed, and contrary to the intention of the user who has come back expecting that the water has already boiled, the water is not boiling.

  Therefore, in order to prevent such a situation from occurring, the high temperature prevention prohibition unit is heated by the heating unit in order to boil the water in the cooking container by the water heating detection unit. Is detected, the high temperature prevention process by the high temperature prevention unit is prohibited. This prevents the heating power of the heating unit from being reduced against the user's will while the cooking container is being heated to boil the water in the cooking container. Water can be boiled quickly.

The external view of a heating cooking apparatus (gas stove). The control block diagram of a heating cooking apparatus. The operation | movement flowchart of a control unit when fried food mode is not selected. The operation | movement flowchart of a control unit when fried food mode is selected.

  An embodiment of a gas stove that is a heating cooking apparatus of the present invention will be described with reference to FIGS. With reference to FIG. 1, the gas stove 1 of this embodiment is a built-in type, and includes three stove burners 4 (4L, 4B, 4R) provided in the stove body and a grill 5 incorporated in the stove body. I have. Two of the three stove burners 4 are arranged on the left and right of the front side of the stove body, and the remaining one is arranged on the rear side of the stove body.

  A temperature sensor 8 (8L, 8B, 8R) for detecting the temperature of the cooking containers WL, WB, WR (see FIG. 2) placed on the five virtues is provided at the center of each combustor 4. Each temperature sensor 8 is biased upward by a spring (not shown) so as to come into contact with the cooking container when the cooking container is placed on the virtues, and a temperature detection signal indicating a detected temperature at the bottom of the cooking container is provided. Output.

  Here, each temperature sensor 8 indirectly detects the temperature of the heated portion in the cooking container, but employs a temperature sensor that directly detects the temperature of the heated object in the cooking container. Also good.

  In the following description, of the three stove burners 4, the left stove 4L is the left stove 4L, the right stove 4R is the right stove 4R, and the rear burner 4 is the rear stove. 4 is also referred to as rear stove 4B.

  In addition, “L” is added to the reference symbol of the component related to the left stove 4L, “R” is added to the reference symbol of the component related to the right stove 4R, and reference to the component related to the rear stove 4B is made. “B” is added to the reference symbol, and “G” is added to the reference symbol of the component related to the grill 5. For example, the expression “temperature sensor 8L” indicates that the temperature sensor 8L is a temperature sensor corresponding to the left stove 4L.

  The stove body has an ignition / fire extinguishing button 10L for the left stove 4L, an ignition / fire extinguishing button 10R for the right stove 4R, an ignition / fire extinguishing button 10B for the rear stove 4B, and an ignition / extinguishing button 11 for the grill 5. Has been placed.

  The stove ignition / fire extinguishing buttons 10L, 10B, and 10R are all operators that can be pushed and rotated, and the pushing operation is an operation for igniting or extinguishing the corresponding stove burner 4. The rotation operation is an operation for adjusting the heating power of the corresponding burner 4 (adjustment of the flow rate of fuel gas supplied to the burner 4). In the present embodiment, the heating power (heating power) of the stove burner 4 can be adjusted to 9 stages (1 to 9 stages).

  Similarly, the ignition / fire extinguishing button 11 for the grill is an operation element that can be pushed and rotated, and the pushing operation is an operation for igniting or extinguishing the grill burners 6a and 6b. The rotation operation is an operation for adjusting the heating power of the grill burners 6a and 6b (adjusting the amount of fuel gas supplied to the grill burners 6a and 6b).

  Furthermore, the stove body is provided with a human sensor 9, an operation panel 12, a display panel 13, and a speaker 15. The human sensor 9 is configured by an infrared sensor, an ultrasonic sensor, or the like, and detects a human body (a user of the gas stove 1) existing near the front surface of the gas stove 1. The speaker 15 outputs notification sounds such as voice and buzzer sounds.

  The operation panel 12 is provided with a switch for performing settings relating to automatic cooking using the stove burner 4. As the automatic cooking, an automatic cooking operation in a cooking mode such as “water heater mode”, “boiled food mode”, “noodle cooking mode” is executed. Moreover, the cooking operation by "fried food mode" which controls the temperature of to-be-cooked object (oil) to preset temperature is performed.

  On the display panel 13, the setting status of the left stove 4L, the right stove 4R, the rear stove 4B, and the grill 5 by the operation panel 12 is displayed.

  Next, referring to FIG. 2, the gas stove 1 includes a gas supply path 31 (31L, 31B, 31R) for supplying fuel gas to the left stove 4L, the rear stove 4B, and the right stove 4R, and the grill burner 6a, A gas supply path 32 for supplying fuel gas to 6b and a control unit 50 for controlling the operation of the gas stove 1 are provided inside the stove body.

  The gas supply paths 31 and 32 are branched from a main gas supply path 33 to which fuel gas is supplied from the outside, and the main gas supply path 33 is connected to the main gas supply paths 31 and 32 at the upstream side of the branch point. An original electromagnetic valve 36 for opening and closing the gas supply path 33 is provided.

  The gas supply path 31L is provided with an electromagnetic valve 34L that opens and closes the gas supply path 31L and a flow rate adjustment valve 35L that adjusts the flow rate of the fuel gas flowing through the gas supply path 31L. Similarly, the gas supply path 31B is provided with an electromagnetic valve 34B and a flow rate adjustment valve 35B, the gas supply path 31R is provided with an electromagnetic valve 34R and a flow rate adjustment valve 35R, and the gas supply path 32 is provided with an electromagnetic valve 34G and a flow rate. A control valve 35G is provided.

  The flow rate adjusting valves 35L, 35B, and 35R correspond to the heating power changing unit of the present invention.

  Further, an ignition electrode 40L for igniting the left stove 4L, an ignition electrode 40B for igniting the rear stove 4B, an ignition electrode 40R for igniting the right stove 4R, and an ignition electrode for igniting the grill burners 6a and 6b 41a and 41b are provided.

  Furthermore, the thermocouple 42L that detects the combustion state of the left stove 4L, the thermocouple 42B that detects the combustion state of the rear stove 4B, the thermocouple 42R that detects the temperature of the combustion flame of the right stove 4R, and the combustion state of the grill 5 Thermocouples 43a and 43b for detection are provided.

  The control unit 50 is an electronic circuit unit configured by a CPU, a memory, and the like (not shown), and performs a function of controlling the operation of the gas stove 1 by executing a control program for the gas stove 1 held in the memory. It functions as a cooking control unit 51, a high temperature prevention unit 52, a water heating detection unit 53, and a high temperature prevention prohibition unit 54.

  The control unit 50 includes an operation signal for the ignition / fire extinguishing buttons 10L, 10B, 10R for the stove 4R, 4B, 4L, an operation signal for the ignition / fire extinguishing button 11 for the grill 5, an operation signal for the operation panel 12, and a temperature sensor 8L. , 8B, 8R, temperature detection signals of thermocouples 42L, 42B, 42R, 43a, 43b, human body detection signals of human sensor 9, and the like.

  Further, according to the control signal output from the control unit 50, the electromagnetic valves 34L, 34B, 34R, 34G, the flow rate adjusting valves 35L, 35B, 35R, 35G, the original electromagnetic valve 36, the ignition electrodes 40L, 40B, 40R, 41a, 41b. The operations of the display panel 13 and the speaker 15 are controlled.

  The cooking controller 51 receives the operation signal of the ignition / fire extinguishing button 10L, 10B, 10R for the stove 4R, 4B, 4L or the ignition / fire extinguishing button 11 for the grill 5, and the corresponding stove 4R, 4B, 4L, grill 5 ignition (heating start) or fire extinguishing (heating stop) processing is performed.

  In addition, the cooking control unit 51 receives the rotation operation signal of the ignition / extinguishing button 10L, 10B, 10R for the stove 4R, 4B, 4L or the ignition / extinguishing button 11 for the grill 5, and the corresponding stove 4R, 4B, 4L, and the heating power of the grill 5 are changed (increased or decreased).

  Furthermore, the cooking control unit 51 executes an automatic cooking operation in various cooking modes of the stove 4R and 4L and a cooking operation in the “fried food mode” based on the operation signal of the operation panel 12.

  In the high temperature prevention unit 52, for each stove 4 (4R, 4B, 4L), a human body is not detected by the human sensor 9, and the stove 4 thermal power is equivalent to the upper limit thermal power (for example, seven stages, the upper limit heating power of the present invention). When the above state continues for a predetermined determination time or more, a high temperature prevention process for weakening the thermal power is executed. By performing the high temperature prevention process, it is possible to prevent the object to be cooked from being heated to a high temperature while the user is away from the gas stove 1.

  In addition, when the automatic cooking operation by cooking modes, such as "water heater mode", "boiled food mode", "noodle bowl mode", is performed, the heating power of the stove 4 is controlled by a preset process, Since there is no fear of being heated until the temperature becomes high, no high temperature prevention treatment is performed.

  The water heating detection unit 53 confirms that heating for boiling water in the cooking container is performed based on the temperature detected by the temperature sensor 8 when the cooking container is heated by the stove burner 4. Detect. Specifically, the water heating detection unit 53 raises the temperature detected by the temperature sensor 8 until the water reaches boiling, the reached temperature estimated from the degree of temperature rise, and the temperature detected by the temperature sensor 8 due to the boiling of water. Based on the fact that it has stopped, it is detected that heating is being performed to boil the water in the cooking container.

  The high temperature prevention prohibition unit 54 prohibits the high temperature prevention unit 52 from executing the high temperature prevention process when the water heating detection unit 53 detects that the water in the cooking container is heated to boil. To do.

  Hereinafter, processing by the high temperature prevention unit 52, the water heating detection unit 53, and the high temperature prevention prohibition unit 54 for the left stove 4L will be described in accordance with the flowcharts illustrated in FIGS. The same process is performed for the right stove 4R.

  STEP 1 to STEP 4 in FIG. 3, STEP 6 to STEP 10, and STEP 30 to STEP 36 in FIG. 4 are processes by the high temperature prevention unit 52.

  The high temperature prevention unit 52 determines whether or not the fried food mode is being selected in STEP 1 of FIG. Then, when the deep-fried food mode is selected, the process branches to STEP 40 of FIG. 4, and when the deep-fried food mode is not selected, the process proceeds to STEP 2.

  In STEP 2, the high temperature prevention unit 52 determines whether or not the heating power of the stove burner 4L is equal to or higher than the medium heating (for example, four stages, corresponding to the upper limit heating power of the present invention). When the heating power of the stove burner 4L is equal to or higher than medium fire, the process proceeds to STEP3.

  In subsequent STEP 3, the high temperature prevention unit 52 has a non-detection period (period during which no human body is detected) of the human sensor 9 when the heating power of the burner 4 </ b> L is equal to or higher than medium fire for 15 minutes (the determination time of the present invention). Or the like). And when the non-detection period of the human sensor 9 is 15 minutes, it progresses to STEP4.

  Note that when the user changes the heating power of the burner 4L to be smaller than that of the medium fire by STEP3, the high temperature prevention unit 52 ends the measurement of the non-detection period of the human sensor 9 and performs the processing from STEP2. To resume.

  In STEP 4, the high temperature prevention unit 52 outputs a buzzer sound from the speaker 15 in STEP 11 to alert the user. The subsequent STEP 5 and STEP 20 branched from STEP 5 are processes by the high temperature prevention prohibition unit 54. The high temperature prevention prohibition unit 54 determines whether or not the water heating detection unit 53 detects that the heating in the cooking container is being boiled in STEP 5. When it is detected that heating is performed to boil the water in the cooking container, the process branches to STEP 20, and the high temperature prevention prohibition unit 54 continues heating with the current thermal power.

  In this case, since the high temperature prevention process by the high temperature prevention part 52 is prohibited, the thermal power of the stove burner 4L does not decrease. Therefore, heating of the cooking container WL is continued by the thermal power set when the user starts heating by the stove burner 4L in order to boil the water in the cooking container WL, and contrary to the intention of the user, It is possible to prevent the water boiling from being delayed. When the heating time by the stove burner 4L exceeds a predetermined time limit, the cooking controller 51 extinguishes the stove burner 4L.

  On the other hand, when it is not detected in STEP5 that heating is performed to boil the water in the cooking container, the process proceeds to STEP6. The high temperature prevention unit 52 sets the heating power of the stove burner 4L to a small fire (for example, two stages) in STEP 6 to prevent the cooking object from becoming high temperature, and proceeds to STEP 7.

  In STEP 7, the high temperature prevention unit 52 determines whether or not the non-detection period of the human sensor 9 is 24 minutes. And when the non-detection period of the human sensor 9 is 24 minutes, it progresses to STEP8. In STEP 8, the high temperature prevention unit 52 outputs a buzzer sound from the speaker 15 again to alert the user and proceeds to STEP 9.

  In STEP 9, the high temperature prevention unit 52 determines whether or not the non-detection period of the human sensor 9 is 25 minutes. And when the non-detection period of the human sensor 9 is 25 minutes, it progresses to STEP10, the high temperature prevention part 52 extinguishes the stove burner 4L, and a to-be-cooked object is left while the user is away from the gas stove 1. Prevent high temperatures.

  When the deep-fried food mode is selected, the process proceeds to STEP 31 when the temperature detected by the temperature sensor 8L reaches the temperature set by the operation panel 12 at STEP 30 in FIG. It is determined whether the non-detection period of 9 is 5 minutes. And when the non-detection period of the human sensor 9 is 5 minutes, it progresses to STEP32, and the high temperature prevention part 52 outputs a buzzer sound from the speaker 15 to alert a user, and progresses to STEP33.

  In STEP 33, the high temperature prevention unit 52 determines whether or not the non-detection period of the human sensor 9 is 9 minutes. And when the non-detection period of the human sensor 9 is 9 minutes, it progresses to STEP34, and the high temperature prevention part 52 outputs a buzzer sound from the speaker 15 again to alert a user, and progresses to STEP35.

  In STEP 35, the high temperature prevention unit 52 determines whether or not the non-detection period of the human sensor 9 is 10 minutes. And when the non-detection period of the human sensor 9 is 10 minutes, it progresses to STEP36, and the high temperature prevention part 52 extinguishes the stove burner 4L, and a to-be-cooked object is left while the user is away from the gas stove 1. Prevent high temperatures.

  In addition, in this embodiment, although the gas stove was shown as a heating cooking apparatus of this invention, this invention is applicable also to other types of heating cooking apparatuses, such as an IH stove.

  DESCRIPTION OF SYMBOLS 1 ... Gas stove (heating cooking apparatus), 4 ... Combustor (heating part), 8 ... Temperature sensor, 9 ... Human sensor, 10 ... Ignition / extinguishing button, 15 ... Speaker, 35 ... Flow control valve (heating power change part) ), 40 ... ignition electrode, 50 ... control unit, 51 ... cooking control part, 52 ... high temperature prevention part, 53 ... water heating detection part, 54 ... high temperature prevention prohibition part.

Claims (1)

A heating unit for heating a cooking container in which an object is to be cooked;
A heating power changing section for changing the heating power of the heating section;
A temperature sensor for detecting the temperature of the cooking object;
A human sensor that detects the human body in the vicinity,
A cooking control unit that performs automatic operation in a cooking mode that controls the heating power of the heating unit according to a preset operation according to a selection operation by a user;
When the cooking container is heated by the heating unit in a state where the automatic operation in the cooking mode is not performed, the heating power of the heating unit is equal to or higher than a predetermined upper limit heating power, and the human sensor detects the human body. When the state that is not detected continues for a predetermined determination time or more, a high temperature prevention unit that performs a high temperature prevention process for reducing the heating power of the heating unit by the heating power change unit,
The heating is performed to boil the water in the cooking container when the cooking container is heated by the heating unit in a state where the automatic operation by the cooking mode is not executed , A water heating detection unit for detecting based on the detection temperature of the temperature sensor;
When the water heating detection unit detects that the heating unit is heated to boil water in the cooking container, the high temperature prevention prohibition prohibits the high temperature prevention process by the high temperature prevention unit. The cooking apparatus characterized by having a part.