EP4050971A1 - Heating cooker - Google Patents

Heating cooker Download PDF

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Publication number
EP4050971A1
EP4050971A1 EP21192056.6A EP21192056A EP4050971A1 EP 4050971 A1 EP4050971 A1 EP 4050971A1 EP 21192056 A EP21192056 A EP 21192056A EP 4050971 A1 EP4050971 A1 EP 4050971A1
Authority
EP
European Patent Office
Prior art keywords
heating
container
unit
energy
size
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
EP21192056.6A
Other languages
German (de)
English (en)
French (fr)
Inventor
Masafumi Sadahira
Tomoya Fujinami
Zarina Rafii
Satoshi Furusawa
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Panasonic Intellectual Property Management Co Ltd
Original Assignee
Panasonic Intellectual Property Management Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Panasonic Intellectual Property Management Co Ltd filed Critical Panasonic Intellectual Property Management Co Ltd
Publication of EP4050971A1 publication Critical patent/EP4050971A1/en
Pending legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H05B6/062—Control, e.g. of temperature, of power for cooking plates or the like
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/10—Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12—Cooking devices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/06—Arrangement or mounting of electric heating elements
    • F24C7/067—Arrangement or mounting of electric heating elements on ranges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F24—HEATING; RANGES; VENTILATING
    • F24C—DOMESTIC STOVES OR RANGES ; DETAILS OF DOMESTIC STOVES OR RANGES, OF GENERAL APPLICATION
    • F24C7/00—Stoves or ranges heated by electric energy
    • F24C7/08—Arrangement or mounting of control or safety devices
    • F24C7/082—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination
    • F24C7/083—Arrangement or mounting of control or safety devices on ranges, e.g. control panels, illumination on tops, hot plates
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00—Heating by electric, magnetic or electromagnetic fields
    • H05B6/02—Induction heating
    • H05B6/06—Control, e.g. of temperature, of power
    • H—ELECTRICITY
    • H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B2213/00—Aspects relating both to resistive heating and to induction heating, covered by H05B3/00 and H05B6/00
    • H05B2213/07—Heating plates with temperature control means

Definitions

  • the present disclosure relates to a heating cooker.
  • JP 2014-234929 A describes a heating cooker including a heating unit, a temperature sensor detecting the temperature of a container or of object to be cooked in the container, a heating power change instruction unit instructing to change the heating power of the heating unit, and a cooking control unit.
  • the cooking control is configured to switch the heating power of the heating unit between first heating power and second heating power less than the first heating power and, when instructed to change the heating power of the heating unit from the heating power change instruction unit, change only the first heating power, of the first heating power and the second heating power.
  • the heating cooker described in JP 2014-234929 A controls boiling noodles and preventing boiling over through switching the strength of the heating power.
  • the heating cooker switches the heating power without taking into consideration the size of the container to be heated, and therefore may undergo boiling over when heating a small container.
  • water may not boil sufficiently due to insufficient heating.
  • convection of water in the container cannot be secured and noodles as object to be cooked do not move through the water, with the result that insufficient boiling may occur such as not being heated evenly.
  • An object of the present disclosure is to provide a heating cooker capable of both securing convection of object to be cooked and preventing boiling over, irrespective of the size of a container to be heated.
  • the heating cooker of the present disclosure comprises: a placement unit on which a container is placed; one or more heating units arranged below the placement unit, for heating the container; an infrared sensor that is disposed substantially above the one or more heating units, the infrared sensor having a plurality of pixels that detect temperatures above the placement unit for the container as temperature information; a container size measurement unit that measures size of the container, based on the temperature information; and a heating control unit that controls heating energy applied to the container by each of the one or more heating units, based on the size of the container.
  • the heating cooker can be provided that is capable of both securing convection of object to be cooked and preventing boiling over, irrespective of the size of the container to be heated.
  • Fig. 1 is a view showing a schematic configuration of a heating cooker 1 according to an embodiment of the present disclosure.
  • Fig. 2 is a schematic lateral view of the heating cooker 1 viewed from the lateral side.
  • a container (pot) 2 is placed on the heating cooker 1.
  • the container 2 holds an object 3 to be cooked as a cooking subject.
  • an X-axis direction indicates a longitudinal direction of the heating cooker 1
  • a Y-axis direction indicates a front-to-back direction
  • a z-direction indicates a height direction.
  • a positive direction of an X-axis is the right side and a negative direction thereof is the left side.
  • a positive direction of a Y-axis is the back side and a negative direction thereof is the front side.
  • the heating cooker 1 When heating a container containing a water-rich food such as noodles to be cooked, the heating cooker 1 according to the present disclosure is capable of preventing the object to be cooked from boiling over while securing occurrence of convection in the object to be cooked.
  • the boil-over phenomenon occurs partly due to volume expansion caused by a film that is formed on the water surface from starch etc. eluted from the object to be cooked so that air bubbles generated at the bottom of the heated container become hard to disappear on the water surface. If heating power is simply weakened to suppress the boil-over phenomenon, boil of the object to be cooked in the container and generation of air bubbles are suppressed, making it hard for convection in the object to be cooked to occur, which may result in underheating of the object to be cooked.
  • the heating cooker controls generation of air bubbles at the bottom of the container by controlling the heating energy applied to the bottom of the container based on the size of the container, thereby simultaneously achieving both securing convection in the object to be cooked arising from boil of the object to be cooked and preventing the object to be cooked from boiling over.
  • the heating cooker 1 comprises a main body 4, a top plate 5, heating coils 6A to 6C, an infrared sensor 7, a communication circuit 8, an operation panel 9, and a control device 20.
  • the main body 4 includes in its interior the heating coils 6A to 6C and the control device 20.
  • the main body 4 has a top surface on which the top plate 5 is disposed and a lateral surface on which the operation panel 9 is disposed.
  • the top plate 5 is a placement unit on top of which the container 2 can be placed.
  • the top plate 5 is disposed on the top surface of the main body 4.
  • the top plate 5 is made of a material such as e.g. glass that can transmit magnetic fields generated by the heating coils 6A to 6C.
  • the heating coils 6A to 6C are heating units heating the container 2 that are arranged below the top plate 5.
  • the heating coils 6A to 6C generate induced magnetic fields when supplied with high-frequency current. By the magnetic fields, the heating coils 6A to 6C apply heat to a bottom surface, etc. of the container 2 placed on the top plate 5, whereby the object 3 to be cooked held in the container 2 can be heated.
  • FIG. 1 shows an example in which one container 2 holding the object 3 to be cooked is placed over the heating coil 6A.
  • the infrared sensor 7 is a temperature detection unit that detects infrared rays emitted from the object 3 to be cooked in the container 2 to thereby detect the temperature of the object 3 to be cooked as temperature information from above based on the infrared rays.
  • the infrared sensor 7 may be e.g. an infrared camera, a thermal image camera, etc.
  • the infrared sensor 7 detects infrared rays radiated from the top plate 5 to thereby detect the temperature of the top plate 5 as temperature information.
  • the infrared sensor 7 detects infrared rays emitted from an object to thereby detect the temperature of the object based on the infrared rays
  • the infrared sensor 7 detects the temperature of the object.
  • the infrared sensor 7 is disposed substantially above the top plate 5 so that it can detect the object 3 to be cooked and the top plate 5 from above.
  • the infrared sensor 7 is connected to the communication circuit 8 to output the acquired temperature information to the communication circuit 8.
  • the communication circuit 8 is an interface device that transmits the temperature information detected by the infrared sensor 7, via a communication line wiredly or wirelessly, to a communication circuit 22 that is one of components of the control device 20.
  • the operation panel 9 is an input device for working the heating cooker 1.
  • the operation panel 9 is disposed on a front lateral surface of the main body 4.
  • the user of the heating cooker 1 operates the operation panel 9 to use the heating cooker 1.
  • Input information from the operation panel 9 is output to and processed by a control circuit 21 of the control device 20.
  • the operation panel 9 may comprise a display 10 that displays information required to use the heating cooker 1 such as power on/off of the heating cooker 1 and output (i.e. heating power) of the heating coils 6A to 6C.
  • the operation panel 9 comprises an operation input unit 11 so as to allow e.g. a predetermined mode to work.
  • the heating cooker 1 has at least a mode for applying heat to boil noodles, etc. and automatically controlling the heating power to prevent boiling over caused by heating.
  • the heating cooker 1 may have a mode for controlling the heating coils 6A to 6C to emit proper heating powers depending on dishes.
  • the heating cooker 1 comprises: a plurality of operation input units 12A to 12C for the user to operate the heating coils 6A to 6C, respectively; and a display unit 13.
  • the display unit 13 is disposed on the front side of the top plate 5 of the heating cooker 1 and displays outputs of the heating coils 6A to 6C.
  • the operation input units 12A to 12C are arranged in front of the display unit 13 on the top plate 5 of the heating cooker 1. The user operates the operation input units 12A to 12C to control e.g. the outputs of the heating coils 6A to 6C.
  • the operation input unit 12A and the heating coil 6A correspond to each other, the operation input unit 12B and the heating coil 6B correspond to each other, and the operation input unit 12C and the heating coil 6C correspond to each other.
  • a heating control unit 24 described later controls start and stop of heating of the heating coil 6A.
  • the operation input units 11 and 12A to 12C may be physical buttons or a touch panel.
  • the container 2 is placed on the top plate 5.
  • the container 2 holds the object 3 to be cooked that is a cooking subject to be heated and cooked.
  • the container 2 is heated by any one of the heating coils 6A to 6C arranged below the top plate 5.
  • the container 2 may be made of e.g. a metal material such as iron, stainless steel, aluminum, copper, etc.
  • the infrared sensor 7 can detect infrared rays having an energy E1 in accordance with the emissivity of the object 3 to be cooked that are radiated from the object 3 to be cooked in the container 2. Accordingly, the control circuit 21 described later of the heating cooker 1 can provide heating control, based on the temperature detected from the object 3 to be cooked.
  • Fig. 3 is a block diagram showing communication connections of the above components and the control circuit 21 of the control device 20.
  • the infrared sensor 7 is connected to the communication circuit 8.
  • the communication circuit 8 is connected to the communication circuit 22 of the control device 20 housed in the main body 4.
  • the control circuit 21 is connected to the communication circuit 22 and acquires, via the communication circuits 8 and 22, the temperature information detected by the infrared sensor 7.
  • the control device 20 comprises the control circuit 21, the communication circuit 22, and a storage device 23.
  • the control circuit 21 is a computer and comprises the heating control unit 24, a container size measurement unit 25, and a cooking status determination unit 26. As described later, the control circuit 21 may comprise a mounting position determination unit and a container size correction unit.
  • the control circuit 21 includes a general purpose processor such as CPU or MPU that runs a program to achieve predetermined functions. For example, the control circuit 21 calls and runs an arithmetic program, etc. stored in the storage unit 23, to thereby implement various processes of the control device 20 such as a heating process of the heating control unit 24 and a measuring process of the container size measurement unit 25.
  • the control circuit 21 is not limited to the mode in which hardware and software cooperate to achieve predetermined functions.
  • the control circuit 21 may be a hardware circuit designed dedicatedly to achieve the predetermined functions.
  • control circuit 21 may be implemented by various processors such as GPU, FPGA, DSP, ASIC, etc. other than CPU and MPU.
  • a control circuit 21 may be composed of e.g. a signal processing circuit that is a semiconductor integrated circuit.
  • the hardware configuration of the control circuit 21 applies to hardware configurations of the heating control unit 24, the container size measurement unit 25, the cooking status determination unit 26, the mounting position determination unit, and the container size correction unit.
  • the heating control unit 24 controls e.g. the magnitude of current flowing through the heating coils 6A to 6C, the time during which the current flows therethrough, etc. to thereby control at least one of the heating output and the heating time imparted from the heating coils 6A to 6C to the container 2 and the object 3 to be cooked.
  • the heating control unit 24 may be configured to start the above control when the cooking status determination unit 26 determines that predetermined conditions have been reached. For example, the heating control unit 24 sets the outputs of the heating coils 6A to 6C to any one of a plurality of predefined power stages, to control the outputs.
  • the heating control unit 24 may set the plurality of power stages with electric energy such as 2,000W, 1,450W, 1,000W, 700W, etc.
  • the heating control unit 24 may be configured to allow continuous change and control.
  • the control circuit 21 may display, on the operation panel 9 or on the display unit 13, the outputs of the heating coils 6A to 6C set by the heating control unit 24.
  • the heating control unit 24 can control the outputs and heating times of the heating coils 6A to 6C, based on instructions input via the operation input units 11 and 12A to 12C.
  • the container size measurement unit 25 measures the size of the container 2 heated by each of the heating coils 6A to 6C, from temperature information based on the temperature detected by the infrared sensor 7. For example, the container size measurement unit 25 sets a predetermined threshold value to regard as the container 2 a region including pixels from which temperatures higher than the threshold value are detected. The container size measurement unit 25 measures the area of the container 2, based on the number of such pixels. For example, the container size measurement unit 25 may measure the size of the container 2, based on whether the detected temperatures exceed the threshold value after the lapse of a predetermined period of time from the start of heating by the heating coils 6A to 6C. The container size measurement unit 25 may be configured to measure the container size when one of the temperatures detected by the infrared sensor 7 exceeds another threshold value that is set to a temperature higher than the above threshold value.
  • the cooking status determination unit 26 determines whether the object 3 to be cooked in the container 2 has reached a predetermined cooking status, from the temperature information based on the temperatures detected by the infrared sensor 7.
  • the predetermined cooking status includes e.g. boiling of the object 3 to be cooked and putting foodstuff into the container 2.
  • the cooking status determination unit 26 determines that the above cooking status has been reached, it outputs the information to the heating control unit 24.
  • the communication circuit 22 is disposed inside the main body 4 and below the top plate 5 and is connected to the control circuit 21.
  • the communication circuit 22 receives from the communication circuit 8 temperature information acquired by the infrared sensor 7 and outputs it to the control circuit 21.
  • the communication circuit 22 is an interface device that receives the temperature information from the communication circuit 8 via the communication line wiredly or wirelessly.
  • the communication circuits 8 and 22 may be connectable to other devices by way of communication lines.
  • the interface device is capable of performing communication compliant with wired communication standards for e.g. USB, Ethernet, etc.
  • the interface device is capable of performing communication compliant with wireless communication standards for e.g. Wi-Fi, Bluetooth, mobile phone line, etc.
  • the storage device 23 is a storage medium capable of storing various pieces of information.
  • the storage device 23 stores the temperature information received by the communication circuit 22 so that the control circuit 21 can utilize the information stored.
  • the storage device 23 is implemented by e.g. a memory such as DRAM, SRAM, flash memory, etc., HDD, SSD, or other storage device, or a proper combination thereof.
  • the storage device 23 stores therein a program for implementing various processes effected by the control circuit 21 of the control device 20.
  • the storage device 23 can store outputs of the heating coils 6A to 6C, heating times at the outputs, temperatures detected by the infrared sensor 7, etc.
  • the storage device 23 may store a table indicative of relationships between any pieces of information, such as e.g.
  • the storage device 23 may store an arithmetic program for calculating the relationships between any pieces of information, such as e.g. an arithmetic program for calculating the above capacity of water from the above measured size of the container 2.
  • Fig. 4 is a flowchart showing a heating control process effected by the control circuit 21 of the heating cooker 1 according to this embodiment.
  • the control circuit 21 causes current to flow through the heating coil 6A by the heating control unit 24, to heat the container 2 (S1).
  • the control circuit 21 acquires as temperature information the temperature detected by the infrared sensor 7 (S2) and measures the size of the container 2 by the container size measurement unit 25 (S3).
  • the control circuit 21 After measuring the size of the container 2, the control circuit 21 allows the heating control unit 24 to determine heating energy applied to the container, based on the size of the container 2 (S4). When the control circuit 21 determines that the heated state in the container 2 has reached a predetermined state (S5), the control circuit 21 allows the heating control unit 24 to start heating control so as to keep the determined heating energy within a predetermined range (S6).
  • the heating cooker 1 provides heating control as described above when heating the container 2 so as to keep the heating energy determined based on the size of the container 2, to consequently prevent boiling over caused by heating.
  • Fig. 5 shows an example of a part of the field of view region detected by the infrared sensor 7 of the heating cooker 1 according to this embodiment.
  • Fig. 6 shows an example of temperatures detected by the infrared sensor 7 in the field of view region shown in Fig. 5 .
  • the temperatures shown in Fig. 6 are temperatures detected from the container 2 being heated by the heating coil 6A.
  • the control circuit 21 measures the container size from temperature information on the temperatures by the container size measurement unit 25.
  • the container size measurement unit 25 determines a pixel whose temperature detected by the infrared sensor 7 is equal to or above 80 degrees centigrade as forming a region of the container 2.
  • the control circuit 21 determines a region T1 indicated in Fig.
  • the control circuit 21 can determine pixels of the region corresponding to the container 2 by the container size measurement unit 25.
  • the control circuit 21 Based on the pixels determined as forming the region of the container 2, the control circuit 21 measures the size of the container 2 by the container size measurement unit 25. For example, a table indicative of relationships between the number of pixels and the area of the container 2 is stored in the storage device 23. The control circuit 21 may refer to the table to measure the area of the container 2 from the number of pixels determined as forming the region of the container 2. Note that the position in the height direction mounted with the infrared sensor 7 is already known and that the average container height can also be predetermined. The above table can be created by finding in advance the relationships between the number of pixels of the container and the area of the container 2 when shot under these conditions.
  • Fig. 7 is a graph showing an example of temperature variation in temperatures detected by the infrared sensor 7 of the heating cooker 1 according to this embodiment.
  • the above temperature is a mean value of temperatures of at least a partial region in the container 2.
  • the control circuit 21 allows the heating coil 6A to heat the container 2
  • the temperature detected by the infrared sensor 7 rises.
  • the temperature rise of object 3 to be cooked saturates at about 100 degrees centigrade.
  • the control circuit 21 can presume that water contained in the object 3 to be cooked is boiling. Since the temperatures detected by the infrared sensor 7 may have some error with respect to the actual temperatures, the temperature saturation detected by the infrared sensor 7 may occur at temperatures other than 100 degrees centigrade.
  • the timing indicated by an arrow A is a timing at which the saturation in temperature rise has been detected.
  • the control circuit 21 may start the heating control process for boil-over prevention by the heating control unit 24.
  • the infrared sensor 7 can acquire a temperature waveform in which rise and fall of the temperature are repeated after the temperature rise saturation, as shown subsequently to the timing indicated by the arrow A.
  • the control circuit 21 may start the heating control process at another timing.
  • An example of the another timing is a timing at which foodstuff is put into the container 2.
  • a temporary, sudden drop in temperature is detected.
  • the control circuit 21 detects as the temperature variation an overall drop in temperature of the object 3 to be cooked which is caused by putting foodstuff having a temperature lower than that of water into water that has reached its boiling point.
  • the control circuit 21 may determine that foodstuff has been put in when the cooking status determination unit 26 detects a temporary drop in temperature that is larger than a predetermined threshold value.
  • the cooking status determination unit 26 may set any value such as e.g. 20 degrees centigrade, 30 degrees centigrade, etc. as the predetermined threshold value.
  • the control circuit 21 of the heating cooker 1 controls heat application to the container 2 by switching the output of the heating coil 6A at a predetermined cycle between a first heating energy for applying a greater energy to the container 2 and a second heating energy that is smaller than the first heating energy.
  • Fig. 8 is a graph showing an example of the output of the heating coil 6A, set by the heating control unit 24. As shown in Fig. 8 , the peak value of the output of the heating coil 6A having the first heating energy indicated by an arrow C is 1,450 W. The peak value of the output of the heating coil 6A having the second heating energy indicated by an arrow D is 1,000 W.
  • the predetermined cycle T means a certain interval indicated by an arrow E of Fig. 8 when the outputs of the heating coils 6A to 6C are varied repeatedly between the predetermined peak values at the certain interval.
  • Example of heating control provided by the heating cooker 1 according to this embodiment.
  • the control circuit 21 switches the output of the heating coil 6A between the first heating energy and the second heating energy every 50 % of the cycle by the heating control unit 24.
  • the heating time of the first heating energy and the heating time of the second heating energy need not be the same, and hence the control circuit 21 may switch the heating time of each heating energy at any ratio.
  • the heating cooker 1 according to this Example can operate the heating coils 6A to 6C with outputs having peak values of at least any of 500 W, 700 W, 1,000 W, 1,450 W, 2,000 W, and 2,500 W through the heating control for boil-over prevention, but this is not limitative.
  • the control circuit 21 performs the heating control process for boil-over prevention for a first container having a diameter of 18 cm at the output of the heating coil 6A shown in Fig. 8 .
  • the object 3 to be cooked held in the first container boils violently and air bubbles generated at the bottom of the first container create convection inside the object 3 to be cooked.
  • the object 3 to be cooked is water and noodles, the present disclosure is not limited thereto.
  • the first container holds the object 3 to be cooked so that the water level is about 60% of the height of the first container. About 1000 g of water is held in the first container to reach the above water level.
  • the noodles being boiled in the first container move through the water along the flow of convection to be heated evenly.
  • the object 3 to be cooked becomes bubbled due to air bubbles generated in the object 3 to be cooked by boiling, with the result that boiling over may occur with the increased bubbles on the object 3 to be cooked.
  • boiling over is prevented by heating at the output of 1,450 W for a predetermined period of time as described above and thereafter switching the output to 1,000 W lower than 1,450 W.
  • the output is switched to 1,000 W after heating with 1,450 W for about 8 seconds.
  • the object 3 to be cooked boils gently as compared with the case of heating at the output of 1,450 W. This suppresses the generation of air bubbles inside the object 3 to be cooked from the bottom of the first container and therefore bubbling at the surface of the object 3 to be cooked, whereupon the amount of bubbles, which has increased by heating at the output of 1,450 W, decreases. Since the amount of bubbles decreases when heated at the output of 1,000 W, the heating cooker 1 can prevent boiling over.
  • the heating cooker 1 controls heat application to the container 2 by switching the output of the heating coil 6A at predetermined periods of time between a first heating energy for applying a greater energy to the container 2 and a second heating energy that is smaller than the first heating energy.
  • the heating cooker 1 can convect and effectively heat the object 3 to be cooked while preventing the object 3 to be cooked from boiling over.
  • the output used in the above Example is applied to the container 2 having a different size, it may be difficult unlike the Example to simultaneously achieve both effective heating ensuring occurrence of convection of the object 3 to be cooked and prevention of boiling over.
  • the container 2 has a diameter larger than 18 cm of Example, the object 3 to be cooked may not be heated sufficiently at the output of 1,450 W and the above convection may not occur.
  • the container 2 has a diameter smaller than 18 cm, when heated at the output of 1,450 W, so many bubbles are generated and boiling over may occur immediately. Furthermore, even if heated at the output of 1,000 W, the generation of air bubbles in the object 3 to be cooked may not be suppressed, which may result in generation of a lot of bubbles and occurrence of boiling over.
  • the control circuit 21 of the heating cooker 1 measures the size of the container 2 and changes the peak values of the outputs of the heating coils 6A to 6C, based on the size measured.
  • the control circuit 21 thereby changes the heating energy applied to the container 2 so that the heating energy applied to the container 2 has an equal energy density.
  • the energy density means heating energy per unit area and unit time applied to the container 2.
  • the control circuit 21 can provide the heating control at proper outputs by changing the heating energies applied to the object 3 to be cooked by heating the container 2 with the heating coils 6A to 6C.
  • the control circuit 21 increases the heating energy applied to the container 2.
  • the smaller the size of the container 2 the smaller the heating energy applied to the container 2.
  • the area of the second container is 121 ⁇ cm 2 .
  • the first container of 18 cm in diameter has an area of 81 ⁇ cm 2 .
  • the area of the second container has a size of about 149% of the area of the first container.
  • the control circuit 21 figures out the output of the heating coil 6A having the same energy density as that of the second heating energy applied to the first container to be 1,490 W. Therefore, via the heating control unit 24, the control circuit 21 selects the output of 1,450 W closer to 1,490 W as being the second heating energy, to heat the second container.
  • the area of the third container is 49 ⁇ cm 2 .
  • the area of the third container has a size of about 60% of the area of the first container.
  • the control circuit 21 figures out the output of the heating coil 6A having the same energy density as that of the second heating energy applied to the first container to be 600 W. Therefore, via the heating control unit 24, the control circuit 21 selects the output of 700 W closer to 600 W as being the second heating energy, to heat the third container.
  • the heating cooker 1 can vary the energy density of the heating energy applied to the container 2, based on the size of the container 2.
  • the control circuit 21 can control the energy densities of the heating energy applied to the container 2 from the heating coils 6A to 6C so as to be within a predetermined range as described later irrespective of the size of the container.
  • the heating cooker 1 can convect and effectively heat the object 3 to be cooked while preventing the object 3 to be cooked from boiling over due to heating.
  • the heating cooker 1 can provide the heating control process for boil-over prevention by varying the cycle of period of time during which heating energy is applied, depending on the volume (i.e. capacity) of the object 3 to be cooked to which the heating energy is applied.
  • the capacity of water held in the second container is about 225 % of that of water held in the first container.
  • the heating time at the first heating energy and the heating time at the second heating energy are each 8 seconds.
  • the heating control unit 24 switches the heating energy at the cycle of 16 seconds.
  • Heating control similar to the heating control for the first container can be provided. Heating need not be performed for the calculated period of time.
  • the control circuit 21 may control the heating coils 6A to 6C to switch their respective heating energies at the cycle of 32 seconds.
  • the capacity of water held in the third container is about 62 % of that of water held in the first container.
  • the heating time at the first heating energy and the heating time at the second heating energy are each 8 seconds.
  • the heating control unit 24 switches the heating energy at the cycle of 16 seconds.
  • the control circuit 21 may control the heating coils 6A to 6C to switch their respective heating energies at the cycle of 8 seconds.
  • the capacity of the object 3 to be cooked held in the container 2 can be inferred from e.g. the temperature information on temperatures detected by infrared sensor 7.
  • the control circuit 21 may detect the water level in the container 2 and the height of the container lateral surface from the acquired temperature information and combine the water level information and the area of the container 2 to calculate the capacity.
  • the storage device 23 may store therein combinations of the sizes of the container 2 and the capacities of the object to be cooked at those sizes. By doing so, when detecting the size of the container 2, the control circuit 21 can select the capacity of the object 3 to be cooked held in the container 2 and calculate the heating time based on the selected capacity to control the heating times of the heating coils 6A to 6C. Furthermore, the capacity of the object 3 to be cooked can be calculated and inferred from the outputs of the heating coils 6A to 6C and the temperature variations in the acquired temperature information.
  • the storage device 23 may store therein combinations of the container sizes and the heating time cycles at those sizes. By doing so, when detecting the container size, the control circuit 21 can select the cycle based on the size and control the heating time cycles of the heating coils 6A to 6C. As described above, since according as the size of the container 2 goes up the capacity of the object 3 to be cooked held in the container 2 increases, the control circuit 21 elongates the cycle. On the contrary, since according as the size of the container 2 goes down the capacity of the object 3 to be cooked held in the container 2 decreases, the control circuit 21 shortens the cycle.
  • the heating cooker 1 can change the heating times by changing the cycles, in addition to being able to change the output peak values of the heating coils 6A to 6C, based on the size of the container 2 or on the capacity of the object 3 to be cooked held in the container 2.
  • the heating cooker 1 controls the generation of air bubbles at the bottom of the container 2 with proper outputs and heating times in accordance with the size of the container 2, thereby making it possible to prevent the object 3 to be cooked from boiling over while performing effective heating ensuring the occurrence of convection of the object 3 to be cooked.
  • the outputs of the heating coils 6A to 6C are configured to be able to apply heat with predetermined outputs, but the present disclosure is not limited thereto.
  • the control circuit 21 may be configured to be able to continuously change the outputs of the heating coils 6A to 6C through the heating control unit 24. By being configured in this manner, the control circuit 21 can heat the container with heating energy having a more proper energy density, based on the container size.
  • the heating time for the capacity of water held in anther container is calculated so that the outputs of the heating coils 6A to 6C are switched at that heating time, but the present disclosure is not limited thereto.
  • the storage device 23 may store therein a table indicative of relationships between the size of the container 2 and the capacity of water, while the control circuit 21 may acquire the capacity of water by measuring the size of the container 2 and referring to that table.
  • the first heating energies applied to the first container, the second container, and the third container described in the above Example have energy densities of about 5.70, about 5.92, and about 6.50 W/cm 2 , respectively.
  • the second heating energies applied to the first container, the second container, and the third container described in the above Example have energy densities of about 3.93, about 3.82, and about 4.55 W/cm 2 , respectively.
  • the heating coils 6A to 6C can apply thereto heating energy allowing occurrence of convection of the object 3 to be cooked held in the container 2.
  • the heating coils 6A to 6C can apply thereto heating energy capable of heating the object 3 to be cooked while suppressing generation of bubbles at the surface of the object 3 to be cooked.
  • the control circuit 21 may set as a reference energy density a predetermined value among the energy densities included in the above and may effect the heating control process so as to vary the energy density of the heating energy with respect to the reference energy density as the reference.
  • the control circuit 21, via the heating control unit 24, may set heating energy having an energy density larger than the above reference energy density as the first heating energy and set heating energy having an energy density smaller than that as the second heating energy, to effect the heating control process. Consequently, the control circuit 21 can control the generation of air bubbles at the bottom of the container 2 and carry out the heating control process for preventing the object 3 to be cooked from boiling over while performing effective heating ensuring the occurrence of convection of the object 3 to be cooked.
  • the heating cooker 1 provides heating control by controlling the outputs of the heating coils 6A to 6C so that the energy density of the heating energy applied to the container 2 become a predetermined energy density, based on the size of the container 2. It is therefore important to properly measure the size of the container 2.
  • the heating cooker 1 measures the size of the container 2, based on the temperatures detected by the infrared sensor 7. Since the infrared sensor 7 may be mounted at any location upon installing the heating cooker, the field of view region detected by the infrared sensor 7 varies depending on the position where the infrared sensor 7 is mounted. When the field of view region varies, the size of the container 2 also changes that is measured based on the temperatures detected by the infrared sensor 7 and on the pixels of the infrared sensor 7. Hence, to effect the heating control process with proper outputs, the control circuit 21 needs to correct the measured size of the container 2, based on the positional relationship between the infrared sensor 7 and the top plate 5.
  • Fig. 9 is a schematic view showing information on positional relationships required to correct the size of the container 2.
  • Fig. 9 shows the top plate 5, the heating coils 6A and 6B, and the infrared sensor 7. Although the heating coil 6C is not shown for simplification, the size of the container 2 placed over the heating coil 6C may also need to be corrected in such a manner as described later.
  • the control circuit 21 of the control device 20 further comprises the container size correction unit in order to execute the above correction.
  • the container size correction unit has a hardware configuration similar to that of the control circuit 21.
  • the container size correction unit can correct the container size measured by the container size measurement unit 25, from the top plate 5 and a mounting position of a mounting unit of the infrared sensor 7 and a mounting angle of a movable unit of the mounting unit, which described later.
  • the infrared sensor 7 comprises the mounting unit for mounting the infrared sensor 7 substantially above the top plate 5.
  • the mounting unit may be mounted e.g. to a wall surface of a kitchen in which the heating cooker 1 is arranged or to a part of a ventilator arranged substantially above the heating cooker 1.
  • the field of view - region of the infrared sensor 7 needs to be adjusted depending on the position where the mounting unit is mounted.
  • the mounting unit includes a movable unit having one or more axes for adjusting the imaging angle of the infrared sensor 7.
  • the movable unit is an angle adjustment mechanism such as a latch capable of adjusting the imaging angle of the infrared sensor 7 vertically and transversely.
  • a dimension X 0 shown in Fig. 9 indicates a difference of distance in X-axis direction between a midpoint between centers of the heating coils 6A and 6B and the center of the heating coil 6B.
  • a dimension Y 0 indicates a difference of distance in Y-axis direction between a back end of the top plate 5 in the front-to-beck direction and the center of the heating coil 6B.
  • the dimensions X 0 and Y 0 are dimensions determined by the model of the heating cooker 1.
  • a dimension X 1 indicates a difference of distance in X-axis direction between the midpoint between the respective centers of the heating coils 6A and 6B and the position where the infrared sensor 7 is mounted.
  • a dimension Y 1 indicates a difference of distance in Y-axis direction between the back end of the top plate 5 in the front-to-beck direction and the position where the infrared sensor 7 is mounted.
  • a dimension Z 1 indicates a difference of distance in Z-axis direction between the top surface of the top plate 5 and the position where the infrared sensor 7 is mounted.
  • the control circuit 21 can determine the mounting angle of the mounting unit of the infrared sensor 7 by the mounting position determination unit.
  • the control circuit 21 finds and determines as the mounting angle e.g. an angle ⁇ X that is an angle representative of the magnitude of the dimension X 1 relative to the dimension Z 1 and an angle ⁇ Z that is an angle representative of the magnitude of the sum of the dimension Y 0 and the dimension Y 1 relative to the dimension Z 1 .
  • the infrared sensor 7 may be mounted at a mounting angle having a proper imaging angle.
  • the control circuit 21 Based on the acquired mounting position and on the determined mounting angle, the control circuit 21 corrects via the container size correction unit the container size measured by the container size measurement unit 25.
  • the storage device 23 may store therein a table showing relationships between the size of the container 2 measured by the container size measurement unit 25 when the infrared sensor 7 is mounted at predetermined mounting position and mounting angle and the actual size of the container 2.
  • the control circuit 21 can calculate the rate to be corrected by the container size correction unit based on the mounting position and the mounting angle, to correct the container size.
  • Table 1 is an example of a table representing relationships of rates to be corrected relative to predetermined mounting positions and mounting angles. TABLE 1 No.
  • the table shown as Table 1 is created by regarding the state where the infrared sensor 7 is mounted at the mounting position and the mounting angle shown with No. 1, as distances that do not require the size correction of the container 2.
  • the dimension Z 1 is changed from the mounting position shown in No. 1, with the result that the angle ⁇ Z is changed.
  • the distance is calculated as being 754.2 between the infrared sensor 7 disposed at the mounting position shown with No. 1 in Table 1 and the center of the heating coil 6A. Since the infrared sensor 7 in No.
  • the left-to-right ratio represents the ratio of area of the heating coil 6B to the heating coil 6A.
  • the sizes of the heating coils 6A and 6B mean the areas of ring marks (not shown) having the same sizes as those of the heating coils 6A to 6C, the ring mark being designated at positions corresponding to the heating coils 6A to 6C drawn on the top plate 5.
  • the distance between the infrared sensor 7 and the container 2 increases as compared with when the infrared sensor 7 is mounted at the mounting position indicated in No. 1.
  • the distance between the infrared sensor 7 and the center of the heating coil 6A is figured out in the same manner as the above to be 921.3.
  • the size of the container 2 measured by the control circuit 21 based on the temperatures detected by the infrared sensor 7 has a value of about 67 % of the size of the container 2 measured at the mounting position indicated in No. 1.
  • the area ratio (left side) shown in Table 1 is a ratio of the area of the heating coil 6A measured by the infrared sensor 7 at the position indicated in No.
  • the container size correction unit corrects the size of the container 2 considering that the size of the container 2 measured by the container size measurement unit 25 is reduced to about 67 %. For example, correction can be made by deviding the measured container size by 0.67.
  • the dimensions X 1 and Y 1 are changed from the mounting position indicated in No. 1, with the result that the angles ⁇ X and ⁇ Z are changed.
  • the dimension X 1 is not 0 and the infrared sensor 7 is mounted at a position other than the midpoint between the respective centers of the heating coils 6A and 6B in X-axis direction. For this reason, the distance between the infrared sensor 7 and the heating coil 6A differs from the distance between the infrared sensor 7 and the heating coil 6B. In the case where the infrared sensor 7 is mounted at the position indicated in No.
  • the area ratio (left side) is 0.97 and the area ratio (right side) is 0.66.
  • the table is stored in the storage device 23 so that the control circuit 21 performs correction process by referring to the table by the container size correction unit, based on the acquired mounting position and the determined mounting angle, but the present disclosure is not limited thereto.
  • the control circuit 21 may acquire a mounting position of the infrared sensor 7 from any terminal and figure out a mounting angle and a distance between the infrared sensor 7 and the container 2, from dimensions based on the mounting position.
  • an arithmetic program for the above calculation may be stored in the storage device 23.
  • the terminal 30 may be a mobile terminal.
  • Fig. 10 is a block diagram showing a configuration of the terminal 30. As shown in Fig. 10 , the terminal 30 includes a control circuit 31, a communication circuit 32, a display 33, a camera 34, and a storage 35.
  • the control circuit 31 is e.g. a computer. Similarly to the control circuit 21, the control circuit 31 can be implemented by various processors, etc. For example, the control circuit 31 calls and runs an arithmetic program, etc. stored in the storage 35, to thereby implement various processes such as a dimension input process effected by a mounting position input program 40 that described later.
  • the communication circuit 32 is an interface device that transmits/receives information to/from the communication circuit 8 via the communication line wiredly or wirelessly.
  • the communication circuit 32 may be connectable to other devices by way of communication lines.
  • the interface device is capable of performing communication compliant with wired communication standards for e.g. USB, Ethernet, etc.
  • the interface device is capable of performing communication compliant with wireless communication standards for e.g. Wi-Fi, Bluetooth, mobile phone line, etc.
  • the display 33 is a display device composed of e.g. liquid crystal or organic EL.
  • the display 33 also comprises an input device such as a touch panel disposed integrally with the display device.
  • the terminal 30 may comprise, as the input device, a physical button separate from the display 33, instead of the touch panel. The above dimensions may be input through the input device.
  • the camera 34 is an imaging device having an imaging element such as e.g. CCD or CMOS and can image the heating cooker 1 as described later.
  • the storage 35 is implemented by e.g. a memory such as DRAM, SRAM, flash memory, etc., HDD, SSD, or other storage device, or a proper combination thereof.
  • the storage 35 may store the mounting position input program 40, etc. As described later, the storage 35 may store therein a program for determining the mounting angle of the movable unit of the mounting unit of the infrared sensor 7 based on the input dimensions.
  • Fig. 11 shows an example of the mounting position input program 40 displayed on the display 33 of the terminal 30.
  • the mounting position input program 40 includes a dimension input unit 41, a heating cooker selection unit 42, a setting angle display unit 43, an angle calculation unit 44, and a deletion unit 45.
  • the dimension input unit 41 allows input of the dimensions X 1 , Y 1 , and Z 1 using the display 33.
  • the heating cooker selection unit 42 allows selection of model information, etc. of the heating cooker 1 that is used for the mounting. Since the dimensions X 0 and Y 0 are dimensions determined by the model of the heating cooker 1, selection of the model information leads to automatic input of the above dimensions X 0 and Y 0 . The dimensions X 0 and Y 0 may be entered manually like the dimension X 1 , etc.
  • the control circuit 31 calculates a proper mounting angle of the movable unit of the mounting unit of the infrared sensor 7 from the input dimensions and displays the result on the setting angle display unit 43.
  • a table indicative of the relationships between dimensions and mounting angles may previously be stored in the storage 35 so that the control circuit 31 can select a mounting angle based on the input dimensions.
  • the setting angle display unit 43 can display a proper setting angle calculated of the movable unit of the infrared sensor 7.
  • the deletion unit 45 is selected, the above input dimensions and the calculated angles are deleted, enabling the dimensions, etc. to be input again.
  • the control circuit 31 of the terminal 30 may transmit the input dimensions to the control device 20 of the heating cooker 1.
  • the control circuit 31 may transmit the calculated mounting angles to the control device 20 of the heating cooker 1.
  • the control circuit 21 of the heating cooker 1 can acquire information for correcting the container size by the container size correction unit, from the received dimensions and mounting angles.
  • the installer of the heating cooker 1 can easily understand the mounting angles of the movable unit of the mounting unit of the infrared sensor 7, from the information on distance between the top plate 5 and the infrared sensor 7.
  • the infrared sensor 7 of the heating cooker 1 is mounted at proper mounting angles so that the control circuit 21 of the heating cooker 1 can effect the heating control process based on proper information.
  • the configuration may be such that the control circuit 31 acquires dimensions from the captured image.
  • the control circuit 31 can acquire the dimensions X 0 and Y 0 from shape features, etc. of the main body 4 of the heating cooker 1.
  • the control circuit 31 may acquire the dimensions by receiving model information of the heating cooker 1 from the control device 20 of the heating cooker 1.
  • the control circuit 31 may be configured such that it can acquire from the captured image the dimensions of the position at which the infrared sensor 7 is mounted relative to the top plate 5.
  • the heating cooker 1 may also be configured such that the captured image is transmitted to the control device 20 of the heating cooker 1 so that the control circuit 21 acquires the dimensions from the captured image.
  • the installer of the heating cooker 1 can acquire the distance information of the infrared sensor 7 relative to the top plate 5 by taking the captured image without measuring the dimensions and easily understand therefrom the mounting angles of the movable unit of the mounting unit of the infrared sensor 7.
  • the infrared sensor 7 of the heating cooker 1 is mounted at proper mounting angles so that the control circuit 21 of the heating cooker 1 can effect the heating control process based on proper information.
  • the present disclosure is not limited thereto.
  • the control circuit 31 may be configured to specify a region where the infrared sensor 7 can be mounted, on the captured image appearing on the display 33.
  • the control circuit 31 may display on the display the region where the infrared sensor 7 can be mounted, overlapping on a video captured by the camera 34, like so-called augmented reality (AR).
  • AR augmented reality
  • the installer of the heating cooker 1 can easily understand a proper mounting position of the infrared sensor 7 through checking the captured image or video.
  • the infrared sensor 7 is mounted at the proper mounting position and is mounted at proper mounting angles using the above methods, etc. so that the control circuit 21 of the heating cooker 1 can effect the heating control process based on proper information.
  • the heating cooker according to this embodiment described as above may be configured as follows.
  • a heating cooker comprises: a placement unit on which a container is placed; one or more heating units arranged below the placement unit, for heating the container; an infrared sensor that is disposed substantially above the one or more heating units, the infrared sensor having a plurality of pixels that detect temperatures above the placement unit for the container as temperature information; a container size measurement unit that measures size of the container, based on the temperature information; and a heating control unit that controls heating energy applied to the container by each of the one or more heating units, based on the size of the container.
  • the heating cooker can measure the size of the container based on the temperatures detected by the infrared sensor, to control the heating energy based on the size.
  • the heating cooker can apply proper heating energy to the container.
  • the heating control unit may calculate an energy density of the heating energy applied to the container by each of the one or more heating units, based on the size of the container, and control the heating energy so that the energy density when the container is large and the energy density when the container is small are both included in a predetermined range.
  • the heating cooker can therefore calculate the energy density of the heating energy applied to the container, based on the size of the container.
  • the heating cooker can thereby control the heating energy so that the energy density has a certain magnitude, based on the size of the container, and apply proper heating energy to the container.
  • the heating control unit may vary the energy density of the heating energy with respect to a predetermined reference energy density as a reference.
  • the heating cooker can provide heating control securing convection of the object to be cooked due to boiling thereof and preventing the object to be cooked from boiling over.
  • the heating control unit may control the heating energy by switching the heating energy between a first heating energy having an energy density larger than the predetermined reference energy density and a second heating energy having an energy density smaller than the predetermined reference energy density.
  • the heating cooker can provide heating control that secures convection of the object to be cooked due to boiling thereof by using the first heating energy having an energy density larger than the predetermined reference energy density and that prevents the object to be cooked from boiling over by using the second heating energy having an energy density smaller than the predetermined reference energy density.
  • the predetermined reference energy density may be within 4 to 6.5 [W/cm 2 ].
  • the heating cooker can provide heating control securing convection of the object to be cooked due to boiling thereof and preventing the object to be cooked from boiling over.
  • the heating control unit may control the heating energy at a predetermined cycle to change an output peak value and the cycle of the heating energy, or only the output peak value, to thereby vary the energy density.
  • the heating cooker can thus control generation of air bubbles at the bottom of the container or generation of air bubbles and time thereof, and provide heating control securing convection of the object to be cooked due to boiling thereof and preventing the object to be cooked from boiling over.
  • the heating control unit may control the heating energy at a predetermined cycle to elongate the cycle of the heating energy of each of the one or more heating units according as the container has a larger size and to shorten the cycle of the heating energy of each of the one or more heating units according as the container has a smaller size.
  • the heating cooker can elongate the cycle of the heating energy controlled at a predetermined cycle according as the size of the container to be heated increases, and shorten the cycle according as the size of the container to be heated decreases.
  • the heating cooker can therefore control the heating energy applied to the container at a proper cycle depending on the container size, and properly heat the object to be cooked held in the container.
  • the container size measurement unit may measure the size of the container, based on the number of pixels having detection temperatures equal to or higher than a predetermined threshold value.
  • the heating cooker can measure the size of the container, based on temperature information of temperatures detected by the infrared sensor.
  • the heating cooker can therefore calculate the heating energy applied to the container, using a container size proper for the heating control.
  • the heating cooker can measure the container size without adding further components.
  • the heating cooker of any one of the first to eighth aspects may further comprise a cooking status determination unit determining heating state inside the container from the temperature information, wherein the heating control unit may start to control of the heating energy of each of the one or more heating units when the cooking status determination unit detects saturation of temperature variation inside the container.
  • the heating cooker can provide heating control when the object to be cooked in the container starts to boil. Hence, the heating cooker can prevent boiling over caused by the object to be cooked continuing to boil.
  • the heating cooker of any one of the first to eighth aspects may further comprise a cooking status determination unit determining heating state inside the container from the temperature information, wherein the heating control unit may start to control of the heating energy of each of the one or more heating units when the cooking status determination unit detects a temporary drop in temperature greater than a predetermined threshold value inside the container.
  • the heating cooker can thus prevent boiling over caused by the object to be cooked continuing to boil.
  • the heating cooker of any one of the first to tenth aspects may further comprise: a mounting unit of the infrared sensor, the mounting unit having a movable unit with one or more axes; a mounting position determination unit determining mounting angles of the mounting unit by acquiring information on distance between the placement unit and the mounting unit; and a container size correction unit correcting the size of the container measured by the container size measurement unit, based on the distance information and the mounting angles, wherein the heating control unit may control the heating energy, based on the size of the container corrected by the container size correction unit.
  • the heating cooker can mount the infrared sensor at proper mounting angles based on the mounting position of the mounting unit of the infrared sensor and to correct the size of the container based on the mounting position and the mounting angles. Accordingly, the heating cooker can provide heating control using more proper information for the container size.
  • the heating cooker of the eleventh aspect may comprise a communication circuit communicable wiredly or wirelessly to a terminal having an input unit, wherein the mounting position determination unit may acquire the distance information input to the terminal.
  • the heating cooker can properly correct the container size by the mounting position determination unit and the container size correction unit and properly control the heating energy based on the size.
  • the heating cooker of the eleventh aspect may comprise a communication circuit communicable wiredly or wirelessly to a terminal having an imaging unit, wherein the mounting position determination unit may acquire the distance information from images of the placement unit and the mounting unit captured by the terminal.
  • the heating cooker can properly correct the container size by the mounting position determination unit and the container size correction unit and properly control the heating energy based on the size.
  • the heating cooker of the eleventh aspect may comprise a communication circuit communicable wiredly or wirelessly to a terminal having an imaging unit, wherein the mounting position determination unit may comprise information on a range of distance from the placement unit, within which the mounting unit is attachable, and wherein the heating cooker may transmit to the terminal the information on the range of distance within which the mounting unit is attachable.
  • the heating cooker can transmit the information on the range of distance within which the mounting unit of the infrared sensor is attachable, to the terminal. This enables the heating cooker to present a proper mounting position of the mounting unit of the infrared sensor.
  • the heating cooker described in the present disclosure can be implemented by e.g. collaboration of hardware resources such as processor and memory and software resources (computer program).
  • a heating cooker can be provided that is capable of both securing convection of the object to be cooked and preventing boiling over, irrespective of the container size, enabling preferred utilization in the industrial field of this type of heating cooker.

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  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Electric Stoves And Ranges (AREA)
  • Induction Heating Cooking Devices (AREA)
EP21192056.6A 2021-02-25 2021-08-19 Heating cooker Pending EP4050971A1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2021028737A JP2022129880A (ja) 2021-02-25 2021-02-25 加熱調理器

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EP4050971A1 true EP4050971A1 (en) 2022-08-31

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EP21192056.6A Pending EP4050971A1 (en) 2021-02-25 2021-08-19 Heating cooker

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JP (1) JP2022129880A (ja)
CN (1) CN114980392A (ja)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2014234929A (ja) 2013-05-30 2014-12-15 リンナイ株式会社 加熱調理装置
DE102015201079A1 (de) * 2014-02-28 2015-09-03 BSH Hausgeräte GmbH Verfahren zur Temperaturregelung eines Kochfeldes
EP2748534B1 (de) * 2011-08-23 2018-12-12 BSH Hausgeräte GmbH Einrichten einer überwachungsvorrichtung für ein kochfeld
GB2564657A (en) * 2017-07-17 2019-01-23 Gerard Bailey Samuel Cooking hob monitoring method

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP2748534B1 (de) * 2011-08-23 2018-12-12 BSH Hausgeräte GmbH Einrichten einer überwachungsvorrichtung für ein kochfeld
JP2014234929A (ja) 2013-05-30 2014-12-15 リンナイ株式会社 加熱調理装置
DE102015201079A1 (de) * 2014-02-28 2015-09-03 BSH Hausgeräte GmbH Verfahren zur Temperaturregelung eines Kochfeldes
GB2564657A (en) * 2017-07-17 2019-01-23 Gerard Bailey Samuel Cooking hob monitoring method

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CN114980392A (zh) 2022-08-30

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