JP2018194192A - Heating cooker - Google Patents

Abstract

To provide a technology capable of more accurately determining whether or not a surplus object other than a heating object exists at an upper part of a heating cooker.SOLUTION: A heating cooker includes: a first heating part for heating a heating object by fire power; an operation part in which an operation regarding the first heating part is performed by a user; an imaging part for imaging an upper part of a heating cooker with the surroundings of the first heating part in an imaging range; and a control part. The control part stores an image imaged by the imaging part when the operation part is operated by the user as a reference image, compares an image imaged by the imaging part after the reference image was imaged with the reference image, and in the case where an object which does not exist in a predetermined range of the reference image exists for equal to or longer than predetermined time in the predetermined range of the image which was imaged by the imaging part thereafter, executes first fire power reduction processing for reducing the fire power of the first heating part.SELECTED DRAWING: Figure 4

Description

  The technology disclosed in the present specification relates to a heating cooker.

  The heating cooker disclosed in Patent Document 1 includes a heating unit that heats an object to be heated with thermal power, an operation unit that performs operations related to the heating unit by a user, and the periphery of the heating unit in an imaging range for cooking. An image pickup unit for picking up an image of the upper side of the container and a control unit are provided. The control unit reduces the heating power of the heating unit when an object (human body or clothes) is present within a predetermined range of the image captured by the imaging unit. The control unit compares the image captured by the imaging unit with a hand sample image indicating a human hand or a sleeve sample image indicating a sleeve of a clothing, thereby determining whether an object (human body or clothes) is present. Deciding. By reducing the heating power of the heating unit when an object (human body or clothing) is present within a predetermined range, the risk of the fire of the heating unit igniting the object (human body or clothing) is reduced.

Japanese Patent Laid-Open No. 2015-230148

  In the heating cooker of Patent Document 1, it is determined whether or not an object (human body or clothes) is present based on the hand sample image or the sleeve sample image, but in order to determine the presence of the object more accurately. There was room for improvement. Therefore, the present specification provides a technique that can more accurately determine whether or not an extra object other than the object to be heated exists above the cooking device.

  A heating cooker disclosed in the present specification includes a first heating unit that heats a heating object with a thermal power, an operation unit that is operated by the user with respect to the first heating unit, and an imaging range around the first heating unit. And an image pickup unit that picks up an image of the upper portion of the cooking device and a control unit. In this heating cooker, the control unit stores, as a reference image, an image captured by the imaging unit when the operation unit is operated by a user, and the imaging unit captures the reference image after the reference image is captured. When the captured image is compared with the reference image, and an object that does not exist within the predetermined range of the reference image exists within the predetermined range of the image captured by the imaging unit for a predetermined time or longer Performs a first heating power reduction process for reducing the heating power of the first heating unit.

  According to such a configuration, when an object (for example, a human body or clothing) is present within a predetermined range, the fire of the first heating unit is reduced by reducing the heating power of the first heating unit (human body or clothing). ) Can be reduced. In the above configuration, the image captured by the imaging unit when the operation unit is operated by the user is used as the reference image. Therefore, the criteria for determining the presence of an extra object (for example, a human body or clothes) other than the object to be heated (for example, a pan or a frying pan) becomes clear. If the operation unit is operated by the user, the user is not working above the cooking device, and there is a high possibility that no extra object (human body or clothes) exists above the cooking device. Become. By making the image at that time the reference image, the reference for determining the presence of the object becomes clearer. Moreover, according to said structure, when the extra object other than a heating target object exists in the predetermined range over predetermined time or more, the thermal power of a 1st heating part is reduced. Therefore, the criteria for determining the presence of an object and reducing the thermal power become clear. If the presence of an extra object is less than the predetermined time, it is not necessary to reduce the thermal power because there is not much influence of the object. As described above, according to the technology disclosed in this specification, it is possible to more accurately determine whether or not an extra object other than the heating target exists above the cooking device.

  In the heating cooker, after the control unit has performed the first heating power reduction process, when the object does not exist within a predetermined range of the image captured by the imaging unit for a predetermined time or more, You may increase the thermal power of a 1st heating part.

  According to such a configuration, when an object (human body or clothes) no longer exists above the cooking device, the heating power of the first heating unit can be restored. Therefore, the heating object can be sufficiently heated.

  The heating cooker may further include a first detection unit that detects the heating object when the heating object is disposed on the first heating unit. In addition, when the heating unit is detected by the first detection unit after the control unit performs the first heating power reduction process in a state where the heating unit is not detected by the first detection unit, the detection is performed. The heating power of the first heating unit may be increased after a predetermined time.

  According to such a configuration, even if it is determined that there is an extra object above the cooking device and the heating power of the first heating unit is reduced, when the heating object is detected by the first detection unit, The existing object can be regarded as a heating object. In this case, it is not necessary to reduce the heating power of the first heating unit. Therefore, the heating object can be sufficiently heated by increasing the heating power of the first heating unit and returning it.

  The heating cooker includes a second heating unit that heats the object to be heated with thermal power, and a second detection unit that detects the heating object when the heating object is disposed on the second heating unit. Furthermore, you may provide. The second heating unit is disposed next to the first heating unit. Moreover, after the said control part performs the said 1st thermal-power reduction process, when the heating target object is detected by the said 2nd detection part, the thermal power of the said 1st heating part is increased after the predetermined time from the detection. May be.

  According to such a configuration, even if it is determined that there is an extra object above the cooking device and the heating power of the first heating unit is reduced, the heating object is detected by the second detection unit. The existing object can be regarded as a heating object heated by the second heating unit. If the object existing above the cooking device is an object to be heated by the second heating unit, there is no particular danger, and there is no need to reduce the heating power of the first heating unit. Therefore, in this case, the heating target of the first heating unit can be sufficiently heated by returning the heating power of the first heating unit.

  Further, the control unit may store, as a reference image, an image captured by the imaging unit when the operation unit is ignited by a user in order to ignite the first heating unit.

  According to such a configuration, since the image at the time of ignition of the first heating unit is used as the reference image, an image immediately before the fire of the first heating unit may cause ignition of an object (for example, a human body or clothes) is the reference image. Can be. Therefore, an image with an appropriate timing can be used as a reference image used for reducing the risk of ignition.

  In addition, in said heating cooker, the case where the 1st heating part is extinguished is included in the control which reduces the thermal power of a 1st heating part. Moreover, the case where the 1st heating part is ignited is included in the control which increases the thermal power of the 1st heating part.

It is the perspective view which looked at the heating cooker from the near side toward the back side. It is a figure which expands and shows the principal part of a heating cooker. It is a figure which shows the control structure of a heating cooker. It is a flowchart of the process of 1st Example which a heating cooker performs. It is a figure which shows a reference | standard image and a captured image (1). It is a figure which shows a reference | standard image and a captured image (2). It is a figure which expands and shows the principal part of a heating cooker. It is a flowchart of the process of 2nd Example which a heating cooker performs.

(First embodiment)
(Configuration of heating cooker 2)
The heating cooker 2 will be described with reference to FIGS. 1 and 2. The heating cooker 2 is a gas-fired built-in stove that is used by being incorporated in a system kitchen. The heating cooker 2 includes a main body 4 whose front surface 4a is exposed to the front side of the system kitchen, and a top plate 6 that is disposed on the upper portion of the main body 4 and is exposed to the counter top of the system kitchen. The top plate 6 is provided corresponding to three virtues 8a, 8b, 8c that support cooking containers such as pans and frying pans that are objects to be heated, and the respective five virtues 8a, 8b, 8c. Three cooker burners 10a, 10b, 10c for heating the object to be heated supported by the five virtues 8a, 8b, 8c, and sensors 12a, 12b, 12c provided corresponding to the respective burners 10a, 10b, 10c. And are provided. A gas supply path (not shown) is connected to each of the burners 10a, 10b, and 10c arranged adjacent to each other. The gas supply path is provided with a flow rate adjusting valve for adjusting the amount of gas supplied to the stove burner 10a. The stove burner 10a is ignited by operating an igniter (not shown) in a state where gas is supplied to the stove burner 10a. By adjusting the amount of gas supplied to the stove burner 10a, the heating amount of the stove burner 10a can be adjusted. Then, the gas supply to the stove burner 10a is stopped, so that the stove burner 10a is extinguished. The stove burners 10b and 10c have the same structure as the stove burner 10a. The main body 4 is provided inside the main body 4 to store the food, the grill door 22 disposed on the front surface 4 a of the main body 4 to open and close the grill storage 20, and the grill door 22 on the front surface 4 a of the main body 4. The stove operating section 24 provided on the right side of the main body 4 and the grill operating section 26 provided on the left side of the grill door 22 on the front surface 4a of the main body 4 are provided. In addition, a grill burner 20 a (not shown) for heating food stored in the grill cabinet 20 is provided inside the grill cabinet 20. In the heating cooker 2, the front surface 4a of the main body 4 and the top surface of the top plate 6 constitute an outer surface exposed to the user.

  A transmissive window 90 is formed on the top plate 6 of the heating cooker 2. The transmission window 90 is formed on the front side (user side) of the main body 4. Further, the transmission window 90 is formed in the central portion of the main body 4 in the left-right direction. The transmission window 90 is formed between the left-hand side stove burner 10a and the right-hand side stove burner 10b. Transparent glass is disposed in the transmission window 90.

  As shown in FIG. 2, a camera 80 is disposed below the transmission window 90. The camera 80 images from above the top plate 6 through the transmission window 90 from below the top plate 6. The camera 80 can capture an image above the cooking device 2. The camera 80 is arranged on the front side (user side) of the main body 4. The camera 80 images the top of the top plate 6 from the front side of the main body 4 toward the back side. Moreover, the camera 80 images the upper part of the top plate 6 in a state where the surroundings of the stove burners 10a, 10b, and 10c are in the imaging range. The camera 80 continuously images above the top plate 6.

  Next to the camera 80, a liquid crystal display unit 84 is disposed. The display unit 84 is disposed on the back side of the main body 4 with respect to the camera 80. On the display unit 84, the operating states of the respective burners 10a, 10b, 10c and the grill burner 20a are displayed.

  As shown in FIG. 1, sensors 12a, 12b, and 12c are provided corresponding to the respective burners 10a, 10b, and 10c. Sensor 12a, 12b, 12c detects the temperature of a heating target object while detecting presence of a heating target object. The sensors 12a, 12b, and 12c can detect the heating object when the heating object (for example, a pan or a frying pan) is disposed on the stove burners 10a, 10b, and 10c. When a heating object (a pan or a frying pan) is disposed on the stove burners 10a, 10b, and 10c, the sensors 12a, 12b, and 12c are pressed by the heating object. When the sensors 12a, 12b, and 12c are pressed by the object to be heated, the sensors 12a, 12b, and 12c detect that the object to be heated is disposed on the stove burners 10a, 10b, and 10c. When the heating object is not disposed on the stove burners 10a, 10b, and 10c, the sensors 12a, 12b, and 12c are not pressed.

  The stove operation unit 24 includes a power switch 40 of the heating cooker 2, three heating amount operation units 42a, 42b, and 42c, and a panel operation unit 44. The heating amount operation units 42a, 42b, and 42c correspond to the burners 10a, 10b, and 10c, respectively. The heating amount operation units 42a, 42b, and 42c are surrounded by LED light emitting units 43a, 43b, and 43c that can emit blue or red light, respectively. The heating amount operation unit 42a is an operation unit for igniting and extinguishing the stove burner 10a and adjusting the heating amount of the stove burner 10a. The heating amount operation unit 42a is an alternate type switch. When an operation for moving the heating amount operation unit 42a from the fire extinguishing position to the ignition position (hereinafter referred to as “ignition operation”) is performed by the user, the stove burner 10a is ignited, and the user operates the heating amount operation unit 42a. When the operation for moving the engine from the ignition position to the fire extinguishing position (hereinafter, referred to as “fire extinguishing operation”) is performed, the stove burner 10a is extinguished. The ignition position is a position where the front surface of the heating amount operation unit 42 a protrudes forward from the front surface 4 a of the main body 4, and the fire extinguishing position is a position where the heating amount operation unit 42 a is accommodated in the main body 4. is there. Further, the user can adjust the heating amount of the burner 10a by operating the heating amount operation unit 42a clockwise or counterclockwise while the heating amount operation unit 42a is located at the ignition position. it can. The heating amount operation units 42b and 42c have the same structure as the heating amount operation unit 42a.

  The panel operation unit 44 includes a display unit 46, heating temperature operation units 48a and 48b, automatic cooking selection operation units 50a and 50b, heating time operation units 52a, 52b and 52c, a recipe selection operation unit 54, and a cooking state. And an operation unit 56. On the display unit 46, the operation state of each of the stove burners 10a, 10b, and 10c is displayed. The heating temperature operation part 48a is an operation part for setting the temperature (for example, 180 degreeC) of the heating target object heated by the stove burner 10a. The heating time operation part 52a is an operation part for setting the heating time (for example, 5 minutes) of the stove burner 10a. The automatic cooking selection operation part 50a is an operation part for selecting cooking by the automatic cooking mode using the stove burner 10a. The heating temperature operation unit 48b, the automatic cooking selection operation unit 50b, and the heating time operation unit 52b are the operation units corresponding to the stove burner 10b, respectively, except for the heating temperature operation unit 48a, the automatic cooking selection operation unit 50a, It has the same function as the heating time operation unit 52a. The recipe selection operation unit 54 is an operation unit for selecting a recipe to be cooked in the automatic cooking mode. The cooking state operation unit 56 is an operation unit for adjusting the state of ingredients cooked in the automatic cooking mode, for example, baking. The heating time operation part 52c has the same function as the heating time operation part 52a except that it is an operation part corresponding to the stove burner 10c.

  The grill operation unit 26 includes a heating amount operation unit 60 and a panel operation unit 62. The heating amount operation unit 60 is surrounded by an LED light emitting unit 61 that can emit blue or red light. By operating the heating amount operation unit 60, the user can ignite and extinguish the grill burner 20a and adjust the heating amount of the grill burner 20a. The structure of the heating amount operation unit 60 is the same as the heating amount operation unit 42 a of the stove operation unit 24.

  The panel operation unit 62 includes a display unit 64, an automatic cooking selection operation unit 66, a recipe selection operation unit 68, and a cooking state operation unit 70. The display unit 64 displays the operating state of the grill burner 20a. The functions of the automatic cooking selection operation unit 66, the recipe selection operation unit 68, and the cooking state operation unit 70 are the operation units corresponding to the grill burner 20a, respectively, and the automatic cooking selection operation unit 50a and the recipe selection operation unit 54, respectively. The same function as the cooking state operation unit 56 is provided.

  Then, with reference to FIG. 3, the control structure of the heating cooker 2 is demonstrated. In addition, in FIG. 3, for easy understanding, the cooker burners 10b and 10c, the sensors 12b and 12c, the heating amount operating units 42b and 42c, the LED light emitting units 43b and 43c, the heating temperature operating unit 48b, and the automatic cooking selection operation Illustration of the part 50b and the heating time operation parts 52b and 52c is omitted. In the following, description of the configuration described in FIG. 1 is omitted.

  The heating cooker 2 includes a control unit 110. The control unit 110 controls the operation of each component of the heating cooker 2. The control unit 110 includes a heating control unit 112 and an instruction transmission unit 114. The heating control unit 112 controls the operation of each burner 10a, 10b, 10c, 20a. When each operation unit is operated by the user, the instruction transmission unit 114 transmits an instruction corresponding to the operation to the operation unit to the heating control unit 112. Further, the control unit 110 includes a memory 120. The memory 120 is configured by a volatile memory, a nonvolatile memory, or the like.

(Processing performed by heating cooker 2)
Then, with reference to FIG. 4, the process performed by the control part 110 of the heating cooker 2 is demonstrated. In the heating cooker 2, when the power switch 40 is turned on, the process shown in FIG. 4 is started. As shown in FIG. 4, in step S11, the control unit 110 monitors reception of the ignition operation signal. The ignition operation signal is transmitted from the heating amount operation unit 42a, 42b, or 42c. When the user of the heating cooker 2 performs an ignition operation with the heating amount operation unit 42a, 42b, or 42c, an ignition operation signal is transmitted from the heating amount operation unit 42a, 42b, or 42c to the control unit 110. For example, when the user performs an ignition operation at the heating amount operation unit 42a corresponding to the control burner 10a in order to ignite the left side burner 10a, an ignition operation signal is transmitted from the heating amount operation unit 42a to the control unit 110. . In addition, the left-hand side burner 10a is ignited. When the control unit 110 receives an ignition operation signal from the heating amount operation unit 42a, 42b, or 42c, the control unit 110 determines YES in step S11 and proceeds to step S12. On the other hand, when the control unit 110 does not receive the ignition operation signal from the heating amount operation units 42a, 42b, or 42c, the control unit 110 determines NO in step S11 and waits.

  Subsequently, in step S <b> 12, the control unit 110 stores the reference image 122 in the memory 120. The reference image 122 is an image captured by the camera 80 when the ignition operation is executed by the user. In the heating cooker 2 described above, the camera 80 disposed below the top plate 6 continuously captures images above the top plate 6. The camera 80 images the top of the top plate 6 in a state where the periphery of the stove burners 10a, 10b, and 10c is in the imaging range. Information on the image captured by the camera 80 is continuously transmitted from the camera 80 to the control unit 110. The control unit 110 continuously receives the image information. When the ignition operation signal is received in step S <b> 11 described above, the control unit 110 stores the image captured by the camera 80 at that time in the memory 120 as the reference image 122. The control unit 110 acquires and stores an image when the ignition operation is executed as the reference image 122. The reference image 122 is a still image.

  Subsequently, in step S <b> 13, the control unit 110 compares the captured image 133 of the camera 80 with the reference image 122. The captured image 133 is an image that the camera 80 is currently capturing. The captured image 133 is an image captured by the camera 80 after the ignition operation is performed by the user. That is, the captured image 133 is an image captured by the camera 80 after the control unit 110 acquires the reference image 122. In the heating cooker 2, the camera 80 continuously images above the top plate 6 even after the ignition operation is executed by the user. Information on the image captured by the camera 80 is continuously transmitted from the camera 80 to the control unit 110. The control unit 110 continuously receives the image information. The control unit 110 compares the captured image 133 captured by the camera 80 after the ignition operation is performed by the user with the reference image 122 stored in the memory 120. The captured image 133 is a moving image or a continuous still image.

  A comparison between the captured image 133 and the reference image 122 will be described in detail. The control unit 110 sets a predetermined detection range 124 in the reference image 122 stored in the memory 120 as shown in FIG. The detection range 124 in the reference image 122 is an image range corresponding to the periphery of the stove burner 10a, 10b, or 10c corresponding to the heating amount operation unit 42a, 42b, or 42c where the ignition operation is performed by the user. For example, when the left heating amount operation unit 42a is operated by the user, an image range corresponding to the periphery of the left-side burner 10a corresponding thereto is set as the detection range 124. The detection range 124 is, for example, an image range corresponding to a range of 10 cm from the stove burner 10a. The setting of the detection range 124 can be changed as appropriate.

  Next, as illustrated in FIG. 5B, the control unit 110 sets a predetermined detection range 134 in the captured image 133 currently captured by the camera 80. The detection range 134 of the captured image 133 is an image range corresponding to the detection range 124 of the reference image 122 set as described above. That is, the detection range 134 is an image range corresponding to the surroundings of the burner 10a, 10b, or 10c corresponding to the heating amount operation unit 42a, 42b, or 42c for which the ignition operation has been performed by the user. The detection range 134 of the captured image 133 can be appropriately changed according to the detection range 124 of the reference image 122. The control unit 110 compares the detection range 134 in the captured image 133 with the detection range 124 in the reference image 122.

  In the heating cooker 2, some object may enter the periphery of the igniting conburner 10 a (the left conburner 10 a corresponding to the left heating amount operation unit 42 a ignited by the user). For example, when a user lifts a pan or pan placed on the left-handed stove burner 10a, the user's hand or clothing sleeve may enter the periphery of the stove burner 10a. Alternatively, when the user places a pan or frying pan on the right-hand side combo burner 10b next to the left-hand side stove burner 10a, the left hand-held burner 10a whose user's hand or clothing sleeve is lit. May invade. Then, an object (human body or clothing) that does not exist in the detection range 124 of the reference image 122 exists in the detection range 134 of the captured image 133 that is currently captured by the camera 80. Therefore, the image in the detection range 134 of the captured image 133 is different from the image in the detection range 124 of the reference image 122.

  Subsequently, in step S14, the control unit 110 determines whether or not there is any object around the igniting burner 10a. Specifically, the control unit 110 compares the detection range 134 of the captured image 133 with the detection range 124 of the reference image 122, and when there is a difference between the images, the time measurement is performed from the time when the difference occurs. To start. Then, as a result of measuring the time, if the time during which the two images are different exceeds a predetermined threshold time (for example, 5 seconds), the control unit 110 has some object (human body or clothes) around the cono burner 10a. Is determined to have intruded. The control unit 110 determines that an object that does not exist in the detection range 124 of the reference image 122 exists in the detection range 134 of the captured image 133 for a predetermined threshold time or more. In this case, the control unit 110 determines YES in step S14 and proceeds to step S15. On the other hand, when the time during which the images of the detection range 134 and the detection range 124 are different does not exceed a predetermined threshold time, the control unit 110 determines that an object has not entered the surroundings of the burner 10a. In this case, the control unit 110 determines NO in step S14 and returns to step S13.

  Subsequently, in step S15, the control unit 110 reduces the heating power of the burner 10a, 10b, or 10c corresponding to the heating amount operation unit 42a, 42b, or 42c for which the ignition operation has been performed by the user. Decrease processing is executed. For example, the control unit 110 reduces the heating power of the left-side burner 10a corresponding to the left-side heating amount operation unit 42a. The control unit 110 reduces the heating power of the stove burner 10a corresponding to the heating amount operation unit 42a that is the transmission source of the ignition operation signal in step S11. In other words, the control unit 110 reduces the heating power of the igniting burner 10a. For example, the fired power of the igniting burner 10a is changed from high to low. Moreover, you may extinguish the fire of the burner 10a. As described above, when a foreign object enters the surroundings of the ignited burner 10a, the control unit 110 reduces the heating power of the burner 10a.

  Subsequently, in step S <b> 16, the control unit 110 compares the captured image 133 of the camera 80 with the reference image 122 again. The captured image 133 is an image that the camera 80 is currently capturing. The captured image 133 at this time is an image captured by the camera 80 after the ignition operation is executed by the user and after the heating power of the burner 10a is reduced in step S15. In the heating cooker 2, the camera 80 continuously images the top of the top plate 6 even after the heating power of the stove burner 10 a is reduced. Information on the image captured by the camera 80 is continuously transmitted from the camera 80 to the control unit 110. The control unit 110 continuously receives the image information. The control unit 110 compares the captured image 133 captured by the camera 80 with the reference image 122 stored in the memory 120 after reducing the heating power of the burner 10a. The captured image 133 is a moving image or a continuous still image.

  The comparison between the captured image 133 and the reference image 122 in step S16 is the same as the comparison method between the captured image 133 and the reference image 122 in step S13. Therefore, detailed description of step S16 is omitted.

  Subsequently, in step S <b> 17, the control unit 110 determines whether there is any object around the igniting burner 10 a. At the stage where the control unit 110 reduces the heating power of the burner 10a in Step S15 described above, an object (human body or clothes) is present in the detection range 134 of the captured image 133. Therefore, as shown in FIG. 5, the image in the detection range 134 of the captured image 133 shown in (b) is different from the image in the detection range 124 of the reference image 122 shown in (a). In step S17, the control unit 110 compares the detection range 134 of the captured image 133 after the reduction of the thermal power and the detection range 124 of the reference image 122, and as shown in FIG. When the difference between the reference image 122 shown in FIG. 5 and the captured image 133) shown in FIG. 5B disappears, time measurement is started when the difference disappears. Then, as a result of measuring the time, the control unit 110 determines that there is no object (human body or clothes) around the cono-burner 10a when the time when the difference between the images is eliminated exceeds a predetermined threshold time. To do. In this case, the control unit 110 determines NO in step S17 and proceeds to step S18. On the other hand, when the detection range 134 of the captured image 133 after the reduction of the thermal power and the image of the detection range 124 of the reference image 122 are different, the control unit 110 still has an object around the conburner 10a. Judge that. The control unit 110 determines that an object that does not exist in the detection range 124 of the reference image 122 exists in the detection range 134 of the captured image 133. In this case, the control unit 110 determines YES in step S17 and returns to step S16.

  Subsequently, in step S18, the control unit 110 increases the thermal power of the stove burner 10a whose thermal power is reduced. The control unit 110 increases the heating power of the stove burner 10a corresponding to the left heating amount operation unit 42a of the transmission source of the ignition operation signal in step S11. For example, the heating power of the stove burner 10a is returned to the heating power before decreasing. Alternatively, the heating power of the stove burner 10a may be changed from low to high. Further, when the stove burner 10a is extinguished, the stove burner 10a is ignited. As described above, after reducing the heating power of the burner 10a, when the foreign matter disappears from the surroundings of the burner 10a, the control unit 110 increases the heating power of the burner 10a.

  After step S18 ends, the control unit 110 returns to step S13. Moreover, if fire extinguishing operation is performed by the user after that, the control part 110 will complete | finish the process shown in FIG.

  The heating cooker 2 according to the first embodiment has been described above. As is apparent from the above description, the heating cooker 2 includes a stove burner 10a that heats an object to be heated (a pan or a frying pan) with thermal power, a heating amount operation unit 42a that is ignited by a user, and a stove burner 10a. Is provided with a camera 80 for capturing an image of the upper portion of the heating cooker 2. Moreover, in this heating cooker 2, the control part 110 memorize | stores in the memory 120 as the reference | standard image 122 the image which the camera 80 imaged when the heating amount operation part 42a was operated by the user. Further, the control unit 110 compares the captured image 133 captured by the camera 80 after the reference image 122 is captured with the reference image 122, and an object (human body or clothing) that does not exist within the detection range 124 of the reference image 122. Is present in the detection range 134 of the picked-up image 133 picked up by the camera 80 for a predetermined time or longer, the heating power of the stove burner 10a is reduced. When the object (human body or clothes) is present in the detection range 134, the risk of the fire of the combustor 10a being ignited by the object (human body or clothes) is reduced by reducing the heating power of the conburner 10a.

  According to the above configuration, since the image captured by the camera 80 when the heating amount operation unit 42a is ignited by the user is used as the reference image 122, an extra object (human body) other than the object to be heated (pan or pan) Criteria for judging the existence of clothing) If the heating amount operation unit 42a is ignited by the user, the user is not working above the heating cooker 2, and there are no extra objects (human body or clothes) above the cooking cooker 2. The possibility that it does not exist increases. By making the image at that time the reference image 122, the reference for determining the presence of an object (human body or clothes) becomes clearer. Moreover, according to said structure, when extra objects (a human body and clothes) other than a heating target object (a pan and a frying pan) exist in the detection range 134 of the captured image 133 over predetermined time or more, the control burner 10a. The firepower is reduced. Therefore, the criteria for determining the presence of an object (human body or clothes) and reducing the thermal power are clarified. If the presence of an extra object (human body or clothes) is less than a predetermined time, there is no influence of the object (human body or clothes), so there is no need to reduce the firepower. With such a configuration, it is possible to more accurately determine whether or not there is an extra object (human body or clothes) other than the heating object (pan or frying pan) above the cooking device 2.

  Further, in the heating cooker 2 described above, the control unit 110 detects the captured image 133 captured by the camera 80 after reducing the heating power of the stove burner 10a (after executing the first heating power reduction process). When no object (human body or clothes) exists in the range 134 for a predetermined time or longer, the heating power of the stove burner 10a is increased. Therefore, when an object (human body or clothes) no longer exists from above the cooking device 2, the heating power of the stove burner 10a can be restored. Therefore, it is possible to sufficiently heat an object to be heated (a pot or a frying pan).

  Further, in the heating cooker 2 described above, the control unit 110 stores, as the reference image 122, an image captured by the camera 80 when the heating amount operation unit 42a is ignited by the user to ignite the burner 10a. I remember it. For this reason, since the image at the time of ignition of the burner 10a is set as the reference image 122, the image immediately before the fire of the burner 10a causes the possibility of ignition of an object (human body or clothes) can be set as the reference image 122. Therefore, an image with an appropriate timing can be used as the reference image 122 used to reduce the risk of ignition.

  Each embodiment has been described in detail above, but these are merely examples and do not limit the scope of the claims. The technology described in the claims includes various modifications and changes of the specific examples illustrated above.

(Second embodiment)
In the heating cooker 2, as shown in FIG. 7, when a heating object (a pan or a frying pan) is placed on the stove burner 10a, 10b, or 10c, the sensor 12a, 12b, or 12c is heated. Detect objects. When the sensors 12a, 12b, or 12c detect the object to be heated, a detection signal is transmitted from the sensors 12a, 12b, or 12c to the control unit 110. For example, when an object to be heated (a pan or a frying pan) is placed on the left-side ignited burner 10a, a detection signal is transmitted from the burner 10a to the control unit 110. In addition, when an object to be heated (a pan or a frying pan) is arranged on the stove burner 10b or 10c (whether or not it is ignited) next to the firing stove 10a, the stove A detection signal is transmitted from the burner 10b or 10c to the control unit 110. Control unit 110 receives the detection signal.

  In the heating cooker 2 according to the second embodiment, as shown in FIG. 8, after the control unit 110 reduces the heating power of the stove burner 10a in step S15, the process proceeds to step S21. In step S21 following step S15, the control unit 110 monitors reception of the detection signal. When the sensors 12a, 12b, or 12c detect an object to be heated (a pan or a frying pan), a detection signal is transmitted to the control unit 110. If the detection signal is received in step S21, control unit 110 determines YES and proceeds to step S22. On the other hand, the control part 110 judges that it is NO, when not receiving a detection signal by step S21, and progresses to step S16. In addition, in the step S15, it is assumed that a heating object (a pan or a frying pan) is not arranged on the stove burner 10a, and no heating object is detected by the sensor 12a.

  In step S22, control unit 110 monitors whether or not a predetermined time has elapsed since the detection signal was received. That is, the control unit 110 monitors whether a predetermined time has elapsed since the detection of the heating object. If the predetermined time has elapsed, the control unit 110 determines YES in step S22 and proceeds to step S18. If the predetermined time has not elapsed, the control unit 110 determines NO and waits.

  In continuing step S18, the control part 110 increases the thermal power of the stove burner 10a which reduced the thermal power. Since step S18 has been described above, a detailed description thereof will be omitted.

  Control part 110 is a case where it is a case where a detection signal is received from any sensor 12a, 12b, and 12c, and increases the thermal power of stove burner 10a at Step S18. That is, even when a heating object (a pan or a frying pan) is arranged on the stove burner 10a with reduced thermal power, the heating object (a pot or pan) on the adjacent stove burner 10b or 10c. Even when the frying pan) is arranged, the heating power of the stove burner 10a having reduced heating power is increased.

  Note that in step S16 after determining NO in step S21, the control unit 110 compares the captured image 133 of the camera 80 with the reference image 122. Since step S16 has been described above, a detailed description thereof will be omitted. If the control unit 110 determines YES in step S17 following step S16, the process returns to step S21.

  The heating cooker 2 according to the second embodiment has been described above. As apparent from the above description, the heating cooker 2 includes a sensor 12a that detects a heating object (a pot or a frying pan) when the heating object (a pan or a frying pan) is placed on the ignited burner 10a. ing. In the heating cooker 2, after the controller 110 reduces the heating power of the stove burner 10a in a state in which the heating object (pan or frying pan) is not detected by the sensor 12a (after executing the first heating power reduction process). When a heating object (a pan or a frying pan) is detected by the sensor 12a, the heating power of the stove burner 10a is increased after a predetermined time from the detection.

  According to such a configuration, even if it is determined that some object is present above the heating cooker 2 and the heating power of the stove burner 10a is decreased in step S15, the heating object (pan or frying pan) is detected by the sensor 12a. When detected, the object existing above the cooking device 2 can be regarded as a heating object (a pan or a frying pan). In this case, it is possible to sufficiently heat (a pan or a frying pan) by returning the heating power of the stove burner 10a.

  Moreover, the heating cooker 2 is equipped with the stove burner 10b and 10c which heat a heating target object (a pot and a frying pan) with a thermal power next to the stove burner 10a. Moreover, the heating cooker 2 includes a sensor 12b or 10c that detects a heating object when the heating object is placed on the stove burner 10b or 10c adjacent to the stove burner 10a. In the heating cooker 2, after the control unit 110 reduces the thermal power of the igniting combustor 10a (after executing the first thermal power reduction process), the control unit 110 of the adjacent combustor 10b or 10c When a heating object is disposed on the heating object and the heating object is detected by the sensor 12b or 12c, the heating power of the burner 10a is increased after a predetermined time from the detection.

  According to such a configuration, even if it is determined that there is some object above the heating cooker 2 and the heating power of the ignited burner 10a is reduced, heating is performed by the adjacent sensor 12b or 12c. When an object is detected, it can be considered that the object existing above the heating cooker 2 is a heating object heated by the adjacent stove burner 10b or 10c. If the object existing above the heating cooker 2 is an object to be heated by the adjacent stove burner 10b or 10c, there is no particular danger, so there is no need to reduce the heating power of the stove burner 10a. Therefore, in this case, the heating target of the stove burner 10a can be sufficiently heated by increasing the heating power of the stove burner 10a with reduced heating power and returning it.

(Other examples)
In the above-described embodiment, the image captured by the camera 80 when the heating amount operation unit 42a, 42b, or 42c in which the ignition operation is performed by the user is operated as the reference image 122, but is limited to this configuration. It is not a thing. In another embodiment, an image captured by the camera 80 when the power switch 40 is operated may be used as the reference image 122. The operation that triggers the control unit 110 to acquire the reference image 122 is not particularly limited. What is necessary is just an operation related to the igniting burners 10a, 10b, and 10c. For example, operations such as the recipe selection operation unit 54 and the cooking state operation unit 56 may be performed.

  The technical elements described in this specification or the drawings exhibit technical usefulness alone or in various combinations, and are not limited to the combinations described in the claims at the time of filing. In addition, the technology exemplified in this specification or the drawings can achieve a plurality of objects at the same time, and has technical usefulness by achieving one of the objects.

2: Heat cooker 4: Main body 6: Top plate 10a: Combustor 10b: Combustor 10c: Combustor 12a: Sensor 12b: Sensor 12c: Sensor 20: Grill box 22: Grill door 24: Stove operating unit 26: Grill operation Unit 40: Power switch 42a: Heating amount operation unit 42b: Heating amount operation unit 42c: Heating amount operation unit 44: Panel operation unit 46: Display unit 80: Camera 84: Display unit 90: Transmission window 110: Control unit 112: Heating Control unit 114: Instruction transmission unit 120: Memory

Claims (5)

A cooking device,
A first heating unit that heats an object to be heated by thermal power;
An operation unit in which an operation related to the first heating unit is performed by a user;
An imaging unit that images the upper portion of the heating cooker by putting the periphery of the first heating unit in an imaging range;
A control unit,
The control unit stores, as a reference image, an image captured by the imaging unit when the operation unit is operated by a user, and an image captured by the imaging unit after the reference image is captured. When the object that does not exist within the predetermined range of the reference image is present in the predetermined range of the image captured by the imaging unit for a predetermined time or more after the comparison with the reference image, the first heating The heating cooker which performs the 1st thermal-power reduction process which reduces the thermal power of a part.   If the object does not exist for a predetermined time or more within a predetermined range of the image captured by the imaging unit after the control unit performs the first thermal power reduction process, the thermal power of the first heating unit is reduced. The cooker according to claim 1, wherein the cooker is increased. A first detection unit for detecting the heating object when the heating object is disposed on the first heating unit;
When the heating unit is detected by the first detection unit after the control unit performs the first heating power reduction process in a state where the heating unit is not detected by the first detection unit, a predetermined value is detected from the detection. The heating cooker according to claim 1 or 2, wherein the heating power of the first heating unit is increased after time. A second heating unit that is arranged next to the first heating unit and that heats the object to be heated by thermal power;
A second detection unit for detecting the heating object when the heating object is disposed on the second heating unit;
When the heating unit is detected by the second detection unit after the control unit performs the first thermal power reduction process, the thermal power of the first heating unit is increased after a predetermined time from the detection. Item 3. A cooking device according to item 1 or 2. 5. The control unit according to claim 1, wherein the control unit stores, as a reference image, an image captured by the imaging unit when the operation unit is ignited by a user to ignite the first heating unit. The heating cooker according to item.

Images