Heating and cooking system

Abstract

The present disclosure aims to provide a cooking system capable of detecting an abnormality in a heated object by comparing the size of the bottom of the heated object with the size of the flame. The cooking system of the present disclosure includes a heating device that heats the heated object with a flame, an infrared imaging device that detects infrared rays emitted from the heated object and the flame from the side or diagonally below the heated object and the flame to generate a thermal image, and a control circuit that receives the thermal image. The control circuit determines whether or not the flame protrudes upward from the bottom of the heated object based on the thermal image. If it is determined that the flame protrudes from the bottom, the control circuit transmits a command signal to the heating device to reduce the output of the flame. The heating device reduces the output based on the command signal.

Description

[Technical field]

[0001] The present disclosure relates to a cooking system. [Background technology]

[0002] Patent Document 1 discloses a cooking system including a heating device for heating an object to be heated and a detector for detecting the contour and flame of the object to be heated. The cooking device reduces the output of the flame when it detects that the flame protrudes outside the contour of the object to be heated. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2020-16354 A Summary of the Invention [Problem to be solved by the invention]

[0004] However, the above-mentioned technology compares the outline of the top of the heated object with the size of the flame, but cannot compare the size of the flame with the bottom of the heated object that is directly heated by the flame. Therefore, for a bowl-shaped heated object with different widths at the top and bottom, even if the flame protrudes from the bottom of the heated object and the heated object is in an overheated state, this cannot be detected unless the flame also protrudes from the top of the heated object.

[0005] In order to solve the above-mentioned problems, the present disclosure aims to provide a cooking system that can detect abnormalities in a heated object by comparing the size of the bottom of the heated object and the size of the flame. [Means for solving the problem]

[0006] Aspects of the present disclosure include A heating device that heats an object to be heated by a flame; an infrared imaging device that detects infrared rays radiated from the object to be heated and the flame from a side or obliquely below the object to be heated and the flame to generate a thermal image; a control circuit for receiving the thermal image; Equipped with The control circuit includes: Whether or not the flame extends upward from the bottom of the heated object based on the thermal image and whether the flame extends beyond or beyond the object to be heated. A process of determining whether If the flame is found to be extending beyond the bottom and when it is recognized that the flame extends in front of or beyond the heated object. sending a command signal to the heating device to reduce the output of the flame; configured to run It is preferable that the heating device is a cooking system configured to execute a process of reducing the output based on the command signal. Effect of the Invention

[0007] In the present disclosure, an infrared imaging device captures images of the object and the flame from the side or diagonally below the object and the flame to generate a thermal image. A control circuit determines whether the flame extends upward from the bottom of the object based on the thermal image. If it is determined that the flame extends upward from the bottom of the object, the control circuit transmits a command signal to the heating device to reduce the output of the flame. This makes it possible to provide a cooking system that can detect an abnormality in the object by comparing the size of the bottom of the object and the size of the flame. [Brief description of the drawings]

[0008] [Figure 1] 1 is a configuration example of a heat cooking system according to a first embodiment. [Diagram 2] FIG. 4 is a diagram illustrating a determination process according to the first embodiment. [Diagram 3] FIG. 13 is a diagram illustrating the effect of the first embodiment. [Figure 4] FIG. 2 is a diagram showing a case where the infrared imaging device according to the first embodiment is installed to the side of an object to be heated and a flame. [Diagram 5]FIG. 5 is a diagram showing a state in which the infrared imaging device in FIG. 4 is stored. [Figure 6] FIG. 2 is a diagram showing a case where the infrared imaging device according to the first embodiment is placed diagonally below a heated object and a flame. [Figure 7A] 2 is a configuration example in which the function of the control circuit according to the first embodiment is realized by hardware. [Figure 7B] 2 is a configuration example in which the function of the control circuit according to the first embodiment is realized by software. [Figure 8] 1 illustrates an example of the configuration of an infrared imaging device according to a first embodiment. [Figure 9] FIG. 11 is a diagram illustrating a modified example of the determination process according to the first embodiment. [Figure 10] FIG. 13 is a diagram illustrating the effect of the first modification of the first embodiment. [Figure 11] FIG. 11 is a diagram illustrating a determination process according to the second embodiment. [Figure 12] FIG. 11 is a diagram illustrating a determination process according to the second embodiment. [Figure 13] 11 is a configuration example of a heat cooking system according to a third embodiment. [Figure 14] FIG. 11 is a diagram illustrating a determination process according to the third embodiment. [Figure 15] FIG. 13 is a diagram illustrating a modified example of the determination process according to the third embodiment. [Figure 16] 13 is a configuration example of a heat cooking system according to a fourth embodiment. [Figure 17] FIG. 11 is a layout diagram of two infrared imaging devices according to the fourth embodiment as viewed from above. [Figure 18] FIG. 13 is a modified layout diagram of two infrared imaging devices according to the fourth embodiment of the present disclosure. [Figure 19] FIG. 13 is a modified layout diagram of two infrared imaging devices according to the fourth embodiment of the present disclosure. [Figure 20] 13 is a configuration example of a heat cooking system according to a fifth embodiment. [Figure 21] FIG. 13 is a diagram illustrating a determination process according to the fifth embodiment. [Figure 22]FIG. 13 is a diagram illustrating a cooking assistance function according to the fifth embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The embodiments will be described with reference to the drawings. The same or corresponding components are designated by the same reference numerals, and the repeated description may be omitted.

[0010] First embodiment 1 shows an example of the configuration of a cooking system 100 according to Embodiment 1. The cooking system 100 includes a heating device 150, an infrared imaging device 110, and a control circuit 120.

[0011] The infrared imaging device 110 captures images of the object to be heated 200 and the flame 50 from the side or obliquely below the object to be heated 200 and the flame 50, and generates a thermal image.

[0012] The control circuit 120 includes an input section, a detection circuit 121, a determination circuit 122, and an output section. The input section receives the thermal image generated by the infrared imaging device 110. The detection circuit 121 detects the bottom area of ​​the heated object 200 and the area of ​​the flame 50 from the thermal image (detection process). Specifically, the control circuit 120 extracts a pixel group showing a temperature of about 1000°C or higher from the thermal image to determine the area of ​​the flame 50. The control circuit 120 also extracts a pixel group located above the area of ​​the flame 50 on the thermal image to determine the area of ​​the heated object 200, and determines the bottom of the area to be the area of ​​the heated object 200. The temperature of the heated object is, for example, in the range of 100°C to 500°C, but the numerical values ​​are merely examples and are not limited thereto.

[0013] The determination circuit 122 determines whether or not the flame 50 protrudes upward from the bottom of the object to be heated 200 based on the area of ​​the flame 50 extracted by the detection circuit 121 and the area of ​​the bottom of the object to be heated 200 (determination process).

[0014] If it is determined that the flame 50 protrudes from the bottom of the object 200, the judgment circuit 122 judges that the object 200 is in an overheated state. In this case, the judgment circuit 122 sends a command signal from the output section to the heating device 150 to reduce the output of the flame 50.

[0015] Heating device 150 is a gas stove that uses combustion exhaust gas of gas as a heat source to heat object 200 such as food ingredients or cooking containers. Heating device 150 includes top plate 153 (not shown), trivet 151, burner 152, an ignition device (not shown) that ignites burner 152, an operating device (not shown) operated by a user to ignite or extinguish burner 152, and a control device (not shown) that controls the amount of gas supplied to burner 152.

[0016] When a command signal is received from the control circuit 120 to reduce the output of the flame 50, the heating device 150 reduces the amount of gas supplied to the burner 152 to reduce the size of the flame 50, or stops the gas supply to extinguish the burner 152.

[0017] Even after sending the command signal, the control circuit 120 continues to monitor the thermal images of the object 200 and the flame 50, and sends a control signal to the heating device 150 until it is no longer determined that the flame 50 protrudes beyond the bottom of the object 200. This makes it possible to reliably prevent the flame 50 from protruding beyond the bottom of the object 200.

[0018] FIG. 2 is a diagram for explaining the judgment process according to the first embodiment. Here, a diagram showing the flame 50 and the heated object 200 viewed from the side is shown. In the judgment process, the judgment circuit 122 compares the width W1 of the flame 50 with the width W2 of the bottom of the heated object 200, and judges that the flame 50 protrudes from the bottom of the heated object 200 when the width W1 of the flame 50 is larger than the width W2 of the bottom of the heated object 200. The width W1 of the flame 50 is measured by detecting both ends of the region of the flame 50 on the thermal image and counting the number of pixels from one end to the other end in the horizontal direction. Similarly, the width W2 of the bottom of the heated object 200 is measured by detecting both ends of the region of the bottom of the heated object 200 and counting the number of pixels from one end to the other end in the horizontal direction.

[0019] 3 is a diagram for explaining the effect of embodiment 1. In this embodiment, even for a bowl-shaped object to be heated 200 with different widths at the top and bottom, it is possible to reliably detect an overheating abnormality at the bottom directly heated by the flame 50. On the other hand, in the conventional method of comparing the outline of the top of the object to be heated 200 with the size of the flame, even if the flame 50 protrudes from the bottom of the object to be heated 200 as in this figure, this cannot be detected unless the flame 50 protrudes from the top.

[0020] 4 is a diagram showing a case where the infrared imaging device 110 according to the first embodiment is installed to the side of the object to be heated 200 and the flame 50. The infrared imaging device 110 can be stored together with the elevator 112 in a storage section 113 provided under a top plate 153 of the heating device 150. The top plate 153 has an opening for removing the infrared imaging device 110 from the upper surface of the storage section 113. A lid covering the upper surface of the storage section 113 is attached to the opening, and when the heating device 150 is to be used, the lid is opened and the infrared imaging device 110 is removed. The infrared imaging device 110 is lifted to the side of the object to be heated 200 by the elevator 112.

[0021] Fig. 5 is a diagram showing a state in which the infrared imaging device 110 of Fig. 4 is stored. When the heating device 150 is not in use, the infrared imaging device 110 is stored in the storage section 113. The top surface of the lid of the storage section 113 is flat with respect to the top surface of the top plate 153 when the lid is closed. This makes it easy to clean the top plate 153.

[0022] However, the infrared imaging device 110 does not necessarily have to be housed in the heating device 150. The infrared imaging device 110 may be installed on a kitchen counter, for example, or may be attached to a wall.

[0023] 6 is a diagram showing a case where the infrared imaging device 110 according to the first embodiment is installed diagonally below the object 200 to be heated and the flame 50. The infrared imaging device 110 captures an image of the flame 50 and the object 200 to be heated through an opening provided in the top plate 153 while stored in the storage section 113. The top surface of the storage section 113 is open, and the opening is closed by a lid that covers the top surface of the storage section 113 and transmits infrared rays. Note that in order to make it easy to clean the top plate 153, it is desirable that the top surface of the lid is flat with the top surface of the top plate 153.

[0024] FIG. 7A is a configuration example in which the function of the control circuit 120 according to the first embodiment is realized by hardware. FIG. 7B is a configuration example in which the function of the control circuit 120 according to the first embodiment is realized by software. The input section of the control circuit 120 is a receiver 145, and the output section is a transmitter 147. Furthermore, the functions of the detection circuit 121 and the judgment circuit 122 of the control circuit 120 are realized by a processing circuit. That is, the control circuit 120 includes a processing circuit for realizing processing including the detection processing performed by the detection circuit 121 and the judgment processing performed by the judgment circuit 122. The processing circuit may be implemented by using dedicated hardware as shown in FIG. 7A. Alternatively, the processing circuit may be implemented by software using a CPU (Central Processing Unit, also called a processor) that executes a program stored in a memory as shown in FIG. 7B.

[0025] When the processing circuit is a dedicated hardware, the processing circuit 146 corresponds to, for example, a single circuit, a decoding circuit, a programmed processor, a parallel programmed processor, an ASIC (Application Specific Integrated Circuit), an FPGA (Field Programmable Gate Array), or a combination of these. The functions of the detection circuit 121 and the determination circuit 122 may be implemented by the processing circuit 146, or the functions of each part may be implemented by the processing circuit 146 collectively.

[0026] When the processing circuit is a CPU, the functions of the detection circuit 121 and the determination circuit 122 are realized by software, firmware, or a combination of these. The software or firmware is written as a program and stored in the memory 149. The processing circuit realizes the functions of each part by reading and executing the program recorded in the memory 149. That is, the control circuit 120 has a memory for storing a program that, when executed by the processing circuit, results in the execution of processes including the detection process and the determination process. These programs can also be said to be for causing a computer to execute the procedures or methods of the detection circuit 121 and the determination circuit 122. Here, the memory 149 corresponds to, for example, a volatile or non-volatile semiconductor memory such as a RAM, a ROM, or a flash memory, or a magnetic disk, a flexible disk, an optical disk, a DVD, or the like.

[0027] FIG. 8 shows an example of the configuration of an infrared imaging device 110 according to the first embodiment.

[0028] The shutter 11 opens and closes the path of infrared light incident on the infrared imaging element 13 by exposing and covering the lens 12 in the field of view facing the subject. The shutter 11 is, for example, a black infrared shielding member. The shutter 11 is open during normal imaging, but is closed when capturing a reference image required for temperature correction.

[0029] The lens 12 focuses the infrared light from the subject onto the infrared imaging element 13 .

[0030] The infrared imaging element 13 has a structure in which a large number of infrared sensor elements are arranged as pixels in a two-dimensional array. The infrared sensor elements change their electrical or temperature characteristics in response to infrared light, and generate an electrical signal according to the amount of infrared light. The infrared sensor elements are, for example, thermopiles, bolometers, thermal diodes, etc., that have light receiving sensitivity in the wavelength range of 8 to 14 μm. However, the wavelength is merely an example and is not limited thereto.

[0031] The ADC 14 digitally converts the electrical signal output from the infrared imaging element 13 and outputs it to the thermal image generating circuit 15 .

[0032] The thermal image generating circuit 15 generates a two-dimensional thermal image representing infrared radiation from the digitized electrical signal of the infrared imaging element 13. The thermal image generating circuit 15 compares the thermal image of the target with a reference image provided by the reference temperature detection circuit 16, and calculates the temperature distribution of the thermal image of the target from the difference with the temperature distribution of the reference image.

[0033] The reference temperature detection circuit 16 detects the temperature distribution for a reference image, which is a thermal image captured with the shutter 11 closed. The reference temperature detection circuit 16 provides the reference image and its temperature distribution to the thermal image generation circuit 15.

[0034] Thus, in this embodiment, the infrared imaging device 110 captures images of the object 200 and the flame 50 from the side or diagonally below the object 200 and the flame 50 to generate a thermal image. The control circuit 120 determines whether the flame 50 protrudes upward from the bottom of the object 200 based on the thermal image. If it is determined that the flame 50 protrudes from the bottom of the object 200, the control circuit 120 sends a command signal to the heating device 150 to reduce the output of the flame 50. This makes it possible to provide a cooking system that can detect an abnormality in the object by comparing the size of the bottom of the object and the size of the flame.

[0035] The method for implementing the determination process is not limited to the above-described method. Modifications are shown below.

[0036] <Modification of the First Embodiment> 9 is a diagram for explaining a modified example of the determination process according to the first embodiment. Here, the case is shown where the center C of the object 200 is shifted from the center A of the flame 50 to the left of the paper by a shift amount S. In the determination process, the amount of protrusion of the flame 50 from the bottom of the object 200 may be measured for each of the left and right sides of the object 200, and if the amount of protrusion exceeds 0 on at least one of the left and right sides, it may be determined that the flame 50 protrudes from the bottom of the object 200. The left and right protrusion amounts D1 and D2 are measured by detecting both ends of the region of the flame 50 that is outside the bottom of the object 200 on the thermal image, and counting the number of pixels in the horizontal direction for each of the left and right sides of the object 200.

[0037] FIG. 10 is a diagram for explaining the effect of the first modification of the first embodiment. In this modification, the control circuit 120 reduces the output of the flame 50 until both of the left and right overhang amounts D1 and D2 are equal to or less than 0. This allows the flame 50 to be controlled so that it does not overhang to either the left or right side of the bottom of the object 200 even if the center C of the object 200 is shifted from the center A of the flame 50. Here, in the method described in FIG. 2 of the first embodiment, the output of the flame 50 is reduced until the width W1 of the flame 50 is equal to or less than the width W2 of the bottom of the object 200. However, it should be noted that when the center C of the object 200 is shifted from the center A of the flame 50, the flame 50 may overhang from either the left or right side of the object 200 even if the width W1 of the flame 50 is equal to or less than the width W2 of the bottom of the object 200.

[0038] Note that when the amount of protrusion of the flame 50 on either the left or right side exceeds 0, control may be performed to reduce the output of only the flame 50 on the side where the amount of protrusion exceeds 0. For example, such control is possible by providing a plurality of supply ports for supplying gas into the burner 152 and individually adjusting the amount of gas at each supply port.

[0039] Embodiment 2 Here, changes from the first embodiment will be described.

[0040] 11 and 12 are diagrams for explaining the judgment process according to embodiment 2. Figs. 11 and 12 show cases where flame 50 is shifted forward and backward, respectively, from the bottom of object 200 to be heated. Judgment circuit 122 of this embodiment judges whether flame 50 protrudes forward or backward from object 200 to be heated based on the thermal image.

[0041] When the first condition is met, that is, the area of ​​the flame 50 overlaps with the area of ​​the object to be heated 200, the judgment circuit 122 judges that the flame 50 protrudes in front of the object to be heated 200. Alternatively, when the first condition is met and it is recognized that the temperature of the bottom of the object to be heated 200 is higher than the temperature of the entire object to be heated 200, the judgment circuit 122 judges that the flame 50 protrudes in front of the object to be heated 200.

[0042] On the other hand, when the second condition is met, that is, the area of ​​the flame 50 does not overlap the area of ​​the object 200 to be heated and the area of ​​the flame 50 is outside the area of ​​the object 200 to be heated, the judgment circuit 122 judges that the flame 50 protrudes beyond the object 200 to be heated. Alternatively, when the second condition is met and the temperature of the side surface of the bottom of the object 200 to be heated is higher than the temperature of the entire object 200 to be heated, the judgment circuit 122 judges that the flame 50 protrudes beyond the object 200 to be heated.

[0043] If it is determined that the flame 50 extends beyond the bottom of the object 200, the determination circuit 122 determines that the object 200 is overheated. In this case, as in the first embodiment, the determination circuit 122 sends a command signal to the heating device 150 to reduce the output of the flame 50.

[0044] In this manner, in this embodiment, it is determined whether the flame 50 extends beyond or beyond the object to be heated 200. This makes it possible to detect overheating abnormalities both in front of and behind the object to be heated 200.

[0045] Third embodiment Here, changes from the first embodiment will be described.

[0046] 13 shows an example of the configuration of a cooking system 100 according to embodiment 3. In cooking system 100 of the present embodiment, an alarm device 160 is added to the example of the configuration of embodiment 1.

[0047] FIG. 14 is a diagram for explaining the judgment process according to the third embodiment. Here, the case is shown where the center C of the object 200 is shifted from the center A of the flame 50 to the left of the paper. When the judgment process determines that the flame 50 is protruding from the bottom of the object 200, the judgment circuit 122 further judges whether the output of the flame 50 is minimum. When the output of the flame 50 is minimum, it indicates that the center C of the object 200 is shifted from the center A of the flame 50 as shown in the figure, and therefore the flame 50 is protruding from the bottom of the object 200 even though the output of the flame 50 is minimum. In this case, the judgment circuit 122 judges that the object 200 is in an abnormal placement state, and transmits a command signal to the alarm 160 to issue a warning.

[0048] When a command signal is received from the control circuit 120, the alarm 160 issues a warning to the user.

[0049] Furthermore, the control circuit 120 judges whether the state in which the flame 50 protrudes from the bottom of the object to be heated 200 continues for a predetermined time. If it is judged that the state continues, the judgment circuit 122 sends a command signal to the heating device 150 to stop the output of the flame 50. In response to this, the heating device 150 stops the gas supply and extinguishes the burner 152.

[0050] In this manner, in this embodiment, a warning is issued to the user when the output is at a minimum and the flame 50 protrudes beyond the bottom of the object to be heated 200. This makes it possible to notify the user of an abnormal placement of the object to be heated 200.

[0051] <Modification of the Third Embodiment> Fig. 15 is a diagram for explaining a modified example of the judgment process according to the third embodiment. In the judgment process, it may be determined whether the flame 50 or the object to be heated 200 is tilted with respect to a horizontal plane, and if tilt is found, a command signal for issuing a warning may be sent to the alarm 160. In this case, the judgment circuit 122 stores a thermal image of the flame 50 and the object to be heated 200 in a normal tilt state. The judgment circuit 122 judges whether the flame 50 and the object to be heated 200 are tilted by comparing the captured thermal image with a thermal image in a normal state. Alternatively, the judgment circuit 122 detects the tilt angle of the flame 50 and the object to be heated 200 from the captured thermal image to judge whether or not there is tilt.

[0052] Fourth embodiment Here, changes from the first embodiment will be described.

[0053] 16 is a configuration example of a cooking system 100 according to embodiment 4. The cooking system 100 of this embodiment includes two infrared imaging devices 110 of embodiment 1. Both infrared imaging device (first infrared imaging device) 110-1 and infrared imaging device (second infrared imaging device) 110-2 image the object to be heated 200 and the flame 50 from the side or diagonally below the object to be heated 200 and the flame 50.

[0054] 17 is a layout diagram of two infrared imaging devices 110 according to embodiment 4 as viewed from above. Virtual XY coordinate axes with the center A of the flame 50 as the origin are displayed. Also shown here is a case where the center C of the object to be heated 200 is shifted from the center A of the flame 50 to the right on the page by a shift amount S. The infrared imaging devices 110-1 and 110-2 capture images of the object to be heated 200 and the flame 50 from directions perpendicular to each other. This makes it possible to capture images of the flame 50 and the object to be heated 200 without creating blind spots.

[0055] The number of infrared imaging devices 110 is not limited to two, and may be disposed on the left and right, in front, or behind the object 200 to be heated.

[0056] The layout method of the two infrared imaging devices 110 is not limited to the example shown in Fig. 17. Modifications are shown below.

[0057] <Modification of the Fourth Embodiment> 18 and 19 are modified layout diagrams of two infrared imaging devices 110 according to the fourth embodiment of the present disclosure. When there are multiple burners 152, the two infrared imaging devices 110 may be arranged so that each can simultaneously image multiple burners 152. By combining the thermal images of the two infrared imaging devices 110, blind spots can be reduced.

[0058] Fifth embodiment Here, changes from the fourth embodiment will be described.

[0059] 20 shows a configuration example of a cooking system 100 according to embodiment 5. In addition to the configuration example of embodiment 4, cooking system 100 of this embodiment includes an upper infrared imaging device 130 that images object to be heated 200 and flame 50 from above and generates a planar thermal image. Control circuit 120 is provided with button 180 for executing a cooking assistance function and display 170 for displaying the results of cooking assistance.

[0060] Fig. 21 is a diagram for explaining the judgment process according to the fifth embodiment. Virtual XY coordinate axes with the center A of the flame 50 as the origin are displayed. Also shown here is a case where the center C of the object to be heated 200 is shifted from the center A of the flame 50 to the right of the paper by a shift amount S. The detection circuit 121 of this embodiment judges whether the flame 50 protrudes from the outline of the object to be heated 200 based on the planar thermal image from the upward infrared imaging device 130. This makes it possible to detect an overheating abnormality on the top surface of the object to be heated 200 as well.

[0061] Fig. 22 is a diagram for explaining the cooking assistance function according to the fifth embodiment. When the user presses the button 180, the detection circuit 121 detects the temperature distribution of the food 210 from the thermal image of the upper infrared imaging device 130. The control circuit 120 transmits a command signal to the heating device 150 to maintain or change the output of the flame 50 based on the temperature distribution of the food 210. For example, if it is recognized that the temperature distribution of the food 210 is not uniform and there are high-temperature areas E1 and low-temperature areas E2, the control circuit 120 transmits a command signal to change the output of the flame 50 so that the temperature distribution becomes uniform. Specifically, the output of the flame 50 is changed so as to decrease the output of the flame 50 in the high-temperature area E1 and increase the output of the flame 50 in the low-temperature area E2.

[0062] The heating device 150 controls the output of the flame 50 based on the contents of the command signal, thereby improving user convenience.

[0063] The present disclosure is not limited to the above-described embodiment, and various modifications can be made in the implementation stage without departing from the spirit of the present disclosure. Furthermore, the embodiments and modifications may be implemented in appropriate combination, and in that case, the combined effects can be obtained. [Explanation of symbols]

[0064] 11 shutter, 12 lens, 13 infrared imaging element, 15 thermal image generating circuit, 16 reference temperature detection circuit, 50 flame, 100 cooking system, 110 infrared imaging device, 112 elevator, 113 storage section, 120 control circuit, 121 detection circuit, 122 judgment circuit, 130 upper infrared imaging device, 145 receiver, 146 processing circuit, 147 transmitter, 149 memory, 150 heating device, 151 trivet, 152 burner, 153 top plate, 160 alarm, 170 display, 180 button, 200 heated object, 210 cooking object

Claims

1. A heating device that heats an object to be heated by a flame, An infrared imaging device that detects infrared radiation emitted from the heated object and the flame from the side or diagonally below the heated object and the flame and generates a thermal image, A control circuit that receives the aforementioned thermal image, Equipped with, The aforementioned control circuit is A process to determine, based on the thermal image, whether the flame extends upward from the bottom of the object being heated, and whether the flame extends in front of or behind the object being heated. If it is determined that the flame is protruding from the bottom, or if it is determined that the flame is protruding in front of or behind the object being heated, the process of sending a command signal to the heating device to reduce the output of the flame, It is configured to perform, A heating and cooking system in which the heating device is configured to perform a process to reduce the output based on the command signal.

2. The aforementioned control circuit is If the flame region overlaps with the region of the object being heated in the thermal image, it is determined that the flame is protruding in front of the object being heated. The heating and cooking system according to claim 1, wherein it is determined that the flame is extending beyond the area of ​​the object to be heated if the flame area does not overlap with the area of ​​the object to be heated and the flame area is outside the area of ​​the object to be heated.

3. The heating device has a top plate and a storage compartment located beneath the top plate. The infrared imaging device, while housed in the storage compartment, captures images of the flame and the object being heated through an opening provided in the top plate. The heating and cooking system according to claim 1 or 2, wherein the opening is closed with a lid that transmits infrared rays.

4. The infrared imaging device includes a first infrared imaging device and a second infrared imaging device. The heating and cooking system according to claim 1 or 2, wherein the first and second infrared imaging devices image the flame and the object to be heated from directions perpendicular to each other.

5. The aforementioned control circuit is If it is determined that the flame is protruding from the bottom, a process is performed to determine whether the output of the flame is at its minimum. A process to notify the user of a warning when the output is deemed to be the minimum; The heating and cooking system according to claim 1 or 2, further comprising the following steps.

6. A heating device that heats an object to be heated by a flame, An infrared imaging device that detects infrared radiation emitted from the heated object and the flame from the side or diagonally below the heated object and the flame and generates a thermal image, A control circuit that receives the aforementioned thermal image, Equipped with, The aforementioned control circuit is A process to determine whether the flame is protruding upward from the bottom of the object being heated, based on the thermal image, If it is determined that the flame is protruding from the bottom, the process involves sending a command signal to the heating device to reduce the output of the flame. A process for determining whether the flame is inclined with respect to the horizontal plane, A process to notify the user of a warning if a tilt is detected, It is configured to perform, A heating and cooking system in which the heating device is configured to perform a process to reduce the output based on the command signal.

7. The device further comprises an upward infrared imaging device that detects the infrared radiation from above the heated object and the flame and generates a planar thermal image. The aforementioned control circuit is A process for detecting the temperature distribution of the object to be heated based on the aforementioned planar thermal image, A process of transmitting a command signal to the heating device to maintain or change the output of the flame based on the temperature distribution, Further execution, The heating device controls the output of the flame based on the command signal, according to claim 1 or 2.

Images