JP2008098189A - System of heating cooking, and heating cooker - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a heating cooker capable of obtaining a target finishing state in a short time. <P>SOLUTION: Since an external temperature sensor 20 is fixed to a cooking utensil 9 not affected by a magnetic field from an IH coil 14 without a top plate 3 intervened, and a cooking content is controlled based on an infrared transmission of temperature information corresponding to a detection result of the external temperature sensor 20, an actual temperature of the cooking utensil 9 can be accurately detected without carrying out a gradual reduction control of heating power. Thus, the cooking utensil 9 can be continuously heated by high heating power, so that a cooking object can be cooked to a target status in a short time. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  INDUSTRIAL APPLICABILITY The present invention can be used in a heating cooker having a configuration for cooking the contents of a cooking utensil based on heating the cooking utensil by heating means, a cooking system including the cooking utensil, and the heating cooking system. It relates to possible cookware.

As shown in FIG. 19, the heating cooker has a configuration in which a thermistor 102 is disposed on the inner periphery of the IH coil 101 and the surface temperature of the cooking utensil 103 is indirectly detected via the top plate 104. is there. In this configuration, when performing automatic water cooking, the thermal power is gradually reduced to high, medium, and low as the detected temperature of the thermistor 102 increases, and the temporal temperature change rate in the low thermal power state becomes the judgment value. The boiling of water is detected on the basis of the fact that it becomes smaller.
JP 2003-139385 A

In the case of the above-mentioned cooking device, the cooking time is prolonged because the step-down control of the thermal power is performed. The stepwise lowering control of the thermal power is aimed at detecting the actual temperature of the cooking utensil 103 with high accuracy as shown in the following 1) to 3). When it is abolished, the actual temperature of the cooking utensil 103 cannot be detected with high accuracy, and the desired finished state cannot be obtained.
1) Since the lead wire 105 of the thermistor 102 is induction-heated under the influence of the magnetic field from the IH coil 101, the detected temperature of the thermistor 102 becomes higher than the actual temperature. For this reason, the influence of the magnetic field received by the lead wire 105 is reduced by gradually reducing the thermal power, and the detected temperature is brought close to the actual temperature.
2) Since the top plate 104, which is a product of a temperature gradient, exists between the cooking utensil 103 and the thermistor 102, the temperature detected by the thermistor 102 follows the actual temperature when the cooking utensil 103 is continuously heated with high heating power. It is hard to do. For this reason, the heating power of the cooking utensil 103 is actively delayed by weakening the heating power step by step, and the detected temperature is made to follow the actual temperature with high accuracy.
3) When the cooking utensil 103 is continuously heated with high heating power, the actual temperature of the cooking utensil 103 rises at the same temperature change rate as before the boiling even after reaching the boiling temperature, so the temperature change rate falls below the judgment value. In this state, the water temperature reaches 120 ° C. exceeding 100 ° C. For this reason, the actual temperature is converged to the vicinity of the boiling temperature by gradually decreasing the thermal power, and the temperature change rate is reduced when the actual temperature reaches the boiling temperature.
This invention is made | formed in view of the said situation, The objective is the cooking appliance which can be used with the system of the heat cooking which can obtain the target finishing state in a short time, and the said heat cooking system. It is to provide.

  The cooking system according to the present invention includes a cabinet in which a top plate on which a cooking utensil having a container portion into which a cooked product is placed is placed is fixed on an upper surface thereof, and the cabinet inside the cabinet. An IH coil that is provided below the top plate and induction-heats the cooking utensil placed on the top plate; and a temperature detection means that is provided on the cooking utensil and detects the temperature of the container portion of the cooking utensil. Transmitting means for transmitting temperature information according to the detection result of the temperature detecting means provided in the cooking utensil toward the top plate by infrared rays, a translucent part provided on the top plate, and the cabinet The temperature information transmitted by infrared rays from the transmission means provided in the lower part of the top plate is transmitted to the top plate. Receiving means for receiving through the portion of the translucent, has a feature where having a control means for driving and controlling the IH coil based on the reception result of said receiving means provided inside the cabinet.

<Common effects of inventions according to claims 1 to 6>
A temperature detector is provided in a cooking utensil that is not adversely affected by the IH coil and does not include a product of a temperature gradient, and the cooking content is controlled based on wireless communication of temperature information corresponding to the detection result of the temperature detector. Therefore, the actual temperature of the cooking utensil can be detected with high accuracy without performing step-down control of the thermal power. For this reason, since the cooking utensil can be continuously heated with a high heating power, it becomes possible to finish the cooked product in a desired state in a short time. Infrared rays are used as a transmission medium for temperature information. Since this infrared ray has a wider transmission area than radio waves, the temperature information can reach the receiving means accurately and reliably without being affected by the setting posture of the cooking utensil. In addition, since infrared rays are not affected by magnetism, temperature information reaches the receiving means accurately and reliably without being affected by magnetism from the electromagnetic cooker.

An infrared transmission module, a battery, and an operation switch are attached to the handle of the cooking utensil, and a temperature detecting means is attached to the container of the cooking utensil. Then, driving power is supplied from the battery to the infrared transmission module based on the ON operation of the operation switch, and the infrared transmission of the temperature information is spontaneously driven based on the ON operation of the operation switch, thereby heating the infrared transmission of the temperature information to the heating cooker. Start independently of the behavior. Hereinafter, specific examples of the embodiment will be described with reference to the drawings.
<Example 1>
As shown in FIG. 1, a cabinet 2 is fixed inside the system kitchen 1. A top plate 3 made of heat-resistant glass corresponding to support means is fixed to the upper surface of the cabinet 2, and the top plate 3 is exposed from the upper surface of the system kitchen 1. The top plate 3 is colored and opaque, and the inside of the cabinet 2 is visually invisible through the top plate 3. An operation panel 4 is fixed to the front surface of the cabinet 2, and an automatic water heating key 5, a heating power adjustment dial 6, and a tempura key 7 are attached to the operation panel 4. These automatic hot water key 5 to tempura key 7 correspond to input means for cooking conditions, and can be operated from the front.

  A circular heating mark 8 is formed on the top plate 3. The heating mark 8 is colored in a color different from the remaining part, and functions as a mark for displaying a placement area on which a general-purpose cooking utensil or a dedicated cooking utensil 9 is placed to the user. This dedicated cooking utensil 9 is composed of a one-handed pan made of a magnetic material, and as shown in FIG. 2, a container portion 10 into which a food is put and a rod-shaped handle portion 11 protruding sideways from the container portion 10. It is composed of Further, as shown in FIG. 1, the top plate 3 is formed with a window portion 12 positioned on the right side of the heating mark 8. The window portion 12 refers to a transparent portion that is a base material of the top plate 3 and has translucency.

  As shown in FIG. 2, an annular coil base 13 is housed inside the cabinet 2 so as to be positioned below the heating mark 8, and the upper surface of the coil base 13 corresponds to a heating means and a primary coil. An annular IH coil 14 is fixed. An internal temperature sensor 15 is housed inside the cabinet 2 below the heating mark 8, and the temperature sensing part of the internal temperature sensor 15 is pressed against the lower surface of the top plate 3 by the spring force of the sensor spring. ing. The internal temperature sensor 15 corresponds to indirect temperature detection means, internal temperature detection means, and temperature detection means, and the lead wire 16 of the internal temperature sensor 15 is connected to the inner peripheral portion of the IH coil 14 and the inner peripheral portion of the coil base 13. Has been inserted. The internal temperature sensor 15 is composed of a thermistor, and indirectly detects the surface temperature of the dedicated cooking utensil 9 and the surface temperature of a general-purpose cooking utensil via the top plate 3.

  As shown in FIG. 3, a rectifier circuit 17 is housed inside the cabinet 2, and a commercial AC power supply 18 is electrically connected to an input terminal of the rectifier circuit 17. This rectifier circuit 17 converts the AC power source 18 into a DC power source, and is composed of a bridge circuit formed by bridge-connecting diodes and a smoothing capacitor. An inverter circuit 19 is electrically connected to the output terminal of the rectifier circuit 17. The inverter circuit 19 converts a DC power source from the rectifier circuit 17 into a high-frequency voltage, and is mainly composed of switching elements connected in a half-bridge form. An IH coil 14 is electrically connected to the output terminal of the inverter circuit 19, and the IH coil 14 induction-heats the upper cooking utensil 9 based on the application of a high-frequency current from the inverter circuit 19.

  As shown in FIG. 2, an external temperature sensor 20 is mechanically fixed to the cooking utensil 9 on the outer peripheral surface of the container portion 10. The external temperature sensor 20 is disposed at the lower end portion of the container portion 10, and the temperature sensitive portion of the external temperature sensor 20 is in close contact with the outer peripheral surface of the container portion 10 at the lower end portion. The external temperature sensor 20 corresponds to a temperature detection means and an external temperature detection means, and is composed of a thermistor that directly detects the surface temperature To of the cooking utensil 9.

  A pot-side power source 21 is mechanically fixed to the cooking utensil 9 at the handle 11. This pan-side power source 21 is composed of a primary battery of 9 V, and a temperature data transmission unit 23 is electrically connected to the pan-side power source 21 via a power switch 22. The power switch 22 is a self-holding slide switch fixed to the handle portion 11, and is switched to an on state for closing the power feeding path and an off state for opening the power feeding path based on the sliding operation of the plunger 24. Retained. That is, when the power switch 22 is turned on, the main power source Vin is supplied from the pan-side power source 21 to the temperature data transmission unit 23, and when the power switch 22 is turned off, the main power source Vin is shut off.

  The temperature data transmission unit 23 is mechanically fixed to the handle unit 11 of the cooking utensil 9 and is activated when the main power source Vin is supplied from the pan-side power source 21 and the main power source Vin is shut off. Stop based on. An external temperature sensor 20 is electrically connected to the temperature data transmitter 23 via a lead wire 25, and the temperature data transmitter 23 detects a temperature signal from the external temperature sensor 20 via a lead wire 25. The cooking information corresponding to the detection result of the temperature signal is transmitted by infrared rays. That is, the temperature data transmission unit 23 corresponds to a transmission means, and the transmission of cooking information from the temperature data transmission unit 23 is automatically started based on the user turning on the power switch 22 and used. Automatically stops when the person turns off the power switch 22.

  As shown in FIG. 4, the temperature data transmission unit 23 is capable of infrared transmission of the power supply circuit 26, voltage detection circuit 27, oscillation circuit 28, temperature detection circuit 29, LED drive circuit 30, infrared LED 31, and control circuit 32. It consists of electrically interconnecting forms. The temperature data transmission unit 23 corresponds to an infrared transmission module that can be handled as a physically independent unit, and the power supply circuit 26 has a voltage of 5 V based on stepping down the main power supply Vin from the pan-side power supply 21. The stabilized power supply Vo is generated. The power supply circuit 26 is composed of a series regulator, and the temperature data transmitter 23 is driven by using a stabilized power supply Vo generated by the power supply circuit 26 as a power supply.

  The voltage detection circuit 27 generates a voltage signal corresponding to the level of the main power supply Vin, and the voltage signal is given to the control circuit 32. The temperature detection circuit 29 generates a voltage signal having a level corresponding to the resistance change of the external temperature sensor 20, and the voltage signal is given to the control circuit 32. The control circuit 32 is composed of a microcomputer using an 8 MHz pulse signal from the oscillation circuit 28 as an operating frequency, and has a CPU, a ROM, a RAM, and an I / O. The voltage detection circuit 27 corresponds to an output detection unit.

A control program is recorded in the ROM of the control circuit 32. This control program is started based on the output of the INT signal from the timer circuit of the control circuit 32, and includes 1) voltage detection processing, 2) temperature detection processing, and 3) data transmission processing. The output of the INT signal is performed every set time (specifically, every 1 msec), and the control circuit 32 starts 1) voltage detection processing to 3) data based on starting the control program every set time. The transmission process is executed every set time. Hereinafter, 1) voltage detection processing to 3) data transmission processing will be described.
1) Voltage detection processing The CPU of the control circuit 32 A / D converts the voltage signal from the voltage detection circuit 27. Based on the A / D conversion result of the voltage signal, the voltage level of the main power source Vin is detected, and the detection result of the voltage level is compared with a determination value recorded in advance in the ROM. When it is detected that the detection result of the voltage level exceeds the determination value, it is determined that the main power supply Vin is at a normal level, and when the detection result of the voltage level is lower than the determination value, the main power supply Vin is at an abnormal level. It is determined that This abnormal level refers to the voltage level before the control circuit 32 can not normally perform the processing operation, and the voltage detection processing is to determine whether or not the pan-side power supply 21 is consumed every set period. It is.
2) Temperature detection processing The ROM of the control circuit 32 records the relationship between the voltage signal (V) from the temperature detection circuit 29 and the surface temperature To (° C) of the cooking utensil 9, as shown in FIG. The CPU of the control circuit 32 performs A / D conversion on the voltage signal from the temperature detection circuit 29 and prepares the surface temperature To according to the A / D conversion result of the voltage signal from the recorded data of the ROM. The direct surface temperature To of the instrument 9 is detected. For example, when the A / D conversion result of the voltage signal is “4.1 V”, “75 ° C.” is detected as the surface temperature To. That is, the temperature detection process is to detect the direct surface temperature To of the cooking utensil 9 for each set period.
3) Data transmission processing As shown in FIG. 4, an infrared LED 31 corresponding to an infrared element is electrically connected to the control circuit 32 via an LED drive circuit 30, and the CPU of the control circuit 32 is 1) a power source. A drive signal is generated based on the detection result of the voltage Vin and 2) the detection result of the surface temperature To. Then, the LED drive circuit 30 is driven and controlled based on the drive signal to control the emission of the infrared LED 31, and from the infrared LED 31 1) the cooking information including the detection result of the power supply voltage Vin and 2) the detection result of the surface temperature To is infrared. Send with. This drive signal is obtained by modulating a carrier signal having a set frequency (specifically, “31.25 kHz”) and a set duty ratio, and the carrier signal is modulated by changing the on / off period. That is, the data transmission process is to generate a driving signal for the infrared LED 31 and to transmit the cooking information by infrared emission by controlling the emission of the infrared LED 31 based on the driving signal. 1) Voltage detection process and 2) Temperature detection process It is performed every set period in conjunction with.

  6A and 6B show the drive signal S generated by the control circuit 32. The drive signal S includes the header S1, the battery remaining amount data S2, the pan data S3, the temperature data S4, and the stop bit S5. It consists of and. The header S1 determines the start of transmission of the drive signal, and is generated by turning off the carrier signal for 5 msec and 3 msec. The stop bit S5 determines the end of transmission of the drive signal, and is generated by turning off the carrier signal for 1 msec and for 3 msec or more. The remaining battery data S2 to temperature data S4 specify the content of the data by a combination of bit “0” and bit “1”, and bit “0” is generated by turning the carrier signal on and off for 1 msec. Bit “1” is generated by turning the carrier signal on for 1 msec and off for 2 msec.

  The battery remaining amount data S2 is composed of 1-bit data for specifying whether or not the pan-side power supply 21 is consumed. The CPU of the control circuit 32 1) When it is determined in the voltage detection process that the main power supply Vin is at a normal level. “0” is set as the remaining battery level data S2 in the immediately subsequent data transmission process, and “1” is set as the remaining battery level data S2 in the immediately following data transmission process when it is determined that the main power source Vin is at an abnormal level. The pan data S3 is unique data for specifying the type, material, size, and the like of the cooking utensil 9, and is recorded in advance in the ROM of the control circuit 32. This pan data S3 consists of 3-bit data, and the CPU of the control circuit 32 sets the same recording data as pan data S3 for each data transmission process. The temperature data S4 is composed of 8-bit data specifying the surface temperature To of the cooking utensil 9, and the CPU of the control circuit 32 2) sets the detection result To of the temperature detection process to the temperature data S4 in the immediately subsequent data transmission process. To do. For example, 2) When the detection result To of the temperature detection process is “75 ° C.”, “11010010” is set as the temperature data S4.

  As shown in FIG. 2, a handle cover 33 is fixed to the cooking utensil 9. The handle cover 33 covers the external temperature sensor 20, the pan-side power supply 21, the operation switch 22, the temperature data transmission unit 23, and the lead wire 25 except for the plunger 24, and is formed of a heat insulating material. A battery exchange port is formed in the handle cover 33, and a battery cover is attached to the battery exchange port so that it can be opened and closed. This battery exchange port refers to an opening for exchanging the pan-side power supply 21, and is opened and closed based on operating the battery cover. In addition, a heat insulating material refers to the material (specifically synthetic resin) whose heat conductivity is low compared with the magnetic material which is a base material of the cooking utensil 9.

  As shown in FIG. 3, an inverter control unit 34 is accommodated in the cabinet 2. The inverter control unit 34 controls the switching of the inverter circuit 19 and is configured as follows. The control circuit 35 is composed mainly of a microcomputer, and has a CPU, a ROM, a RAM, and an I / O. An operation unit 36 is electrically connected to the control circuit 35, and the control circuit 35 sets cooking conditions according to the operation content of the operation unit 36. The operation unit 36 refers to cooking information input means such as an automatic water heating key 5, a heating power adjustment dial 6, and a tempura key 7, and the control circuit 35 generates a drive signal based on the setting result of the cooking conditions. An inverter circuit 19 is electrically connected to the control circuit 35 via a drive circuit 37, and the drive circuit 37 performs switching control of the inverter circuit 19 based on a drive signal from the control circuit 35, and The cooking utensil 9 is induction-heated based on passing a high-frequency current. The control circuit 35 corresponds to control means.

  A temperature detection circuit 38 is electrically connected to the internal temperature sensor 15 via a lead wire 16. This temperature detection circuit 38 outputs a voltage signal at a level corresponding to the resistance change of the internal temperature sensor 15, and the control circuit 35 cooks based on A / D conversion of the voltage signal from the temperature detection circuit 38. The surface temperature To of the appliance 9 and the surface temperature Ts of a general-purpose cooking appliance are indirectly detected, and the pulse width of the drive signal is controlled based on the detection results of the surface temperatures To and Ts.

  The current transformer 39 functions as current detection means for detecting the input current Iin supplied from the AC power supply 18 to the rectifier circuit 17, and the input current detection circuit 40 is electrically connected to the current transformer 39. The input current detection circuit 40 outputs a voltage signal at a level corresponding to the input current Iin, and the control circuit 35 performs A / D conversion on the voltage signal from the input current detection circuit 40 to input voltage Iin. Detect the size of.

  The control circuit 35 detects the amount of electrical energy used for induction heating based on temporal integration of the detection result of the input current Iin, and determines the detection result of the amount of electrical energy and the detection result of the surface temperature Ts. Heating information is acquired based on software processing. The detection result of the surface temperature Ts corresponds to the consumption result of electric energy, and the control circuit 35 acquires the material, weight, size, etc. of the general-purpose cooking utensil as heating information based on the correlation between the two. The pulse width of the drive signal is controlled based on the acquisition result of the heating information. The heating information acquisition process according to the detection result of the input current Iin is executed at the time of general-purpose automatic water cooking without the infrared cooking information from the temperature data transmission unit 23, and the infrared data from the temperature data transmission unit 23 is obtained. At the time of cooking in a dedicated automatic kettle where cooking information exists, heating information such as the material, weight and size of the cooking utensil 9 is acquired based on the cooking information pan data S3, and the pulse width of the drive signal is the infrared acquisition result of the heating information Controlled based on

  The infrared light receiving circuit 41 is formed by modularizing an infrared sensor and a signal output circuit, and is disposed below the window portion 12 of the top plate 3. This infrared light receiving circuit 41 generates cooking data based on receiving cooking information from the temperature data transmitting unit 23 through the window unit 12, and the cooking data is as shown in FIG. It is set by envelope detection of the light reception result of cooking information. The infrared light receiving circuit 41 corresponds to receiving means.

  As shown in FIG. 4, the infrared light receiving circuit 41 is connected to the interrupt terminal INT of the control circuit 35, and the control circuit 35 starts the interrupt program based on detecting the header S1 of the cooking data. Then, the battery remaining data S2, the pan data S3, and the temperature data S4 following the header S1 are stored in the RAM as wireless cooking information. In this RAM, “wireless area (NEW)” and “wireless area (OLD)” are formed as wireless cooking information storage areas, and the latest wireless cooking information from the infrared light receiving circuit 41 is “wireless”. It is stored in “Area (NEW)”, processed by the main program for automatic water cooking, and then moved to “Radio Area (OLD)”.

  As shown in FIG. 3, the control circuit 35 is electrically connected with an LED 42 corresponding to a notification unit. This LED 42 is fixed to the operation panel 4 as shown in FIG. 1, and the CPU of the control circuit 35 controls the “wireless area (NEW) of the RAM when cooking contents are controlled by the main program for automatic kettle cooking. ) ”Stores the consumption“ 1 ”of the pan-side power supply 21 as the battery remaining amount data S2, the user is asked to wear and replace the pan-side power supply 21 based on the continuous light emission of the LED 42. Is notified.

A main program for automatic kettle cooking is recorded in the ROM of the control circuit 35, and when the CPU of the control circuit 35 detects the ON operation of the automatic kettle key 5, the main program for automatic kettle cooking is started up. Control the cooking content based on. Hereinafter, the main program for automatic kettle cooking will be described.
When performing automatic water heating using a general-purpose cooking utensil, the general-purpose cooking utensil is set on the heating mark 8 and the automatic water heating key 5 of the operation panel 4 is turned on. When performing automatic water heating using the dedicated cooking utensil 9, the dedicated cooking utensil 9 is set on the heating mark 8, and the operation switch 22 of the cooking utensil 9 and the automatic water heating key 5 of the operation panel 4 are turned on.

  When the control circuit 35 detects that the automatic water heating key 5 is turned on, the control circuit 35 clears the RAM in step S1 of FIG. 7 and resets the cooking flag to the temperature raising process. In step S2, the heating power is set to a rated value of 3 kW, and automatic water heating cooking is started with a strong heating power of 3 kW. This heating power is adjusted based on controlling the energization time per unit time of the IH coil 14 by the on / off ratio of the inverter circuit 19, and the control circuit 35 starts automatic water boiling cooking with a high power of 3 kW. The process proceeds to step S3.

When the control circuit 35 proceeds to step S3, it determines the presence or absence of a timer signal. This timer signal is output from the timer circuit of the control circuit 35 every set time (specifically every 1 sec), and when the control circuit 35 detects the timer signal in step S3, the process proceeds to step S4.
When the control circuit 35 proceeds to step S4, it determines the setting state of the cooking flag. The cooking flag is set in the temperature raising process based on the start of the automatic water heating cooking, and is set in the heat retaining process based on the end of the temperature raising process. The control circuit 35 sets the cooking flag in the temperature rising process in step S4. When it is detected that the cooking flag is set, the temperature increasing process of step S5 is performed, and when it is detected that the cooking flag is set to the heat retaining process in step S4, the heat retaining process of step S6 is performed. In other words, the temperature increasing process in step S5 and the heat retaining process in step S6 are performed every set time when the timer signal is output from the timer circuit.

When the control circuit 35 proceeds to the temperature raising process of step S5, it refers to the “wireless area (NEW)” of the RAM in step S11 of FIG. This “wireless area (NEW)” indicates the latest use state of the dedicated cooking utensil 9. For example, when a general-purpose cooking utensil is used, the “wireless area (NEW)” is reset. . In the reset state of the “wireless area (NEW)”, the control circuit 35 recognizes that a general-purpose cooking utensil is used in step S11, proceeds to step S12, and performs general-purpose kettle cooking.
1. General-purpose kettle cooking The control circuit 35 detects the indirect surface temperature Ts of the cooking utensil based on the wired acquisition of the output signal from the internal temperature sensor 15 in step S12, and the detection result of the surface temperature Ts is stored in the RAM. Stored as wired cooking information. In this RAM, “wired area (NEW)” and “wired area (OLD)” are formed as storage areas for wired cooking information, and the latest surface temperature Ts acquired in step S12 is “wired area (NEW)”. And is moved to the “wired area (OLD)” in step S16 or S19.

  When the surface temperature Ts is stored in the RAM in step S12, the control circuit 35 detects the storage result of the surface temperature Ts from the “wired area (NEW)” in step S13, and compares it with a determination value Th recorded in advance in the ROM. If “Ts ≦ Th (specifically, 80 ° C.)” is detected, the process proceeds to step S14, where the storage results of the surface temperature Ts are stored in the ROM as the determination values Th and Tl (specifically 50). Compare with ° C).

  When the control circuit 35 detects “Ts <Tl” in step S14, the control circuit 35 proceeds to step S16. Here, the latest surface temperature Ts of the “wired area (NEW)” is moved to the “wired area (OLD)” and the default data is recorded in the “wired area (NEW)”. To reset. If “Tl ≦ Ts ≦ Th” is detected in step S14, the heating power is set to 2 kW in step S15, and the process proceeds to step S16. That is, when it is detected based on the output signal from the internal temperature sensor 15 that the surface temperature Ts of the general-purpose cooking utensil has reached the judgment value Tl, the heating power is lowered from 3 kW to 2 kW, and the cooking utensil is heated by 2 kW. Heated continuously.

  When the control circuit 35 detects “Ts> Th” in step S13, the control circuit 35 proceeds to step S17 and operates the IH coil 14 with a low heating power of 1 kW. That is, when it is detected that the surface temperature Ts of the general-purpose cooking utensil reaches the determination value Th (> Tl) based on the output signal from the internal temperature sensor 15, the heating power is lowered from 2 kW to 1 kW, and the cooking utensil is Heated continuously with 1 kW of thermal power.

  When the heating power is set weak in step S17, the control circuit 35 calculates the temperature change rate ΔTs in step S18. This temperature change rate ΔTs corresponds to the temperature rise per unit time of the cooking utensil, and the control circuit 35 detects the surface temperature Ts from the “wired area (NEW)” and “wired area (OLD)” The difference between the latest detection result of the surface temperature Ts and the previous detection result is calculated as the temperature change rate ΔTs.

After calculating the temperature change rate ΔTs in step S18, the control circuit 35 proceeds to step S19. Here, the latest surface temperature Ts of the “wired area (NEW)” is moved to the “wired area (OLD)” and the default data is recorded in the “wired area (NEW)”. To reset.
When the control circuit 35 arranges the “wired area (NEW)” and “wired area (OLD)” of the RAM in step S19, the calculation result of the temperature change rate ΔTs is compared with the determination value ΔT recorded in advance in the ROM in step S20. To do. Here, when “ΔTs <ΔT” is detected, it is determined that the cooking utensil has reached the recognition temperature Tw, and the heat retention process is set in the cooking flag in step S21. That is, as shown in FIG. 10, the general-purpose automatic kettle cooking changes the heating state of the cooking utensil based on changing the heating power stepwise from strong, medium, and weak based on the output signal from the internal temperature sensor 15. It is weakened step by step, and ends based on a decrease in the temperature rise ΔTs of the cooking utensil.
2. About dedicated hot water cooking When the control circuit 35 detects that wireless cooking information is stored in the “wireless area (NEW)” of the RAM in step S11 of FIG. 8, the control circuit 35 proceeds to step S22. The wireless cooking information of this “wireless area (NEW)” is transmitted by the temperature data transmission unit 23 of the cooking utensil 9 by infrared rays at every set time, and is stored by the control circuit 35 in the external interruption process. That is, when wireless cooking information is stored in the “wireless area (NEW)” of the RAM, the use of the dedicated cooking utensil 9 is recognized, and automatic hot water cooking is performed in a manner corresponding to the dedicated cooking utensil 9.

  When the control circuit 35 proceeds to step S22, it detects the remaining battery level data S2 of the “wireless area (NEW)”. Here, when it is detected that “0” is stored as the battery remaining amount data S2, it is determined that the pan-side power source 21 is at a normal level, and the LED 42 is turned off in step S23. Further, when it is detected that “1” is stored as the remaining battery level data in the “wireless area (NEW)”, it is determined that the pan-side power source 21 is abnormally lowered and the process proceeds to step S24, and the LED 42 is turned on. The user is notified that the battery has run out based on the lighting. That is, the battery exhaustion display is turned on not only when cooking is started while the pan-side power source 21 is abnormally lowered, but also when the pan-side power source 21 is abnormally dropped during cooking. When this pan-side power supply 21 is replaced with a normal one during cooking, “0” is transmitted as the remaining battery level data from the temperature data transmission unit 23, so that the battery exhaustion display is turned off.

  In step S25, the control circuit 35 detects the temperature data S4 from the “wireless area (NEW)” of the RAM. This temperature data S4 corresponds to the direct surface temperature To of the cooking utensil 9 transmitted by infrared rays from the temperature data transmitter 23, and when the control circuit 35 detects the surface temperature To in step S25, in step S26. A temperature change rate ΔTo is calculated. This temperature change rate ΔTo corresponds to the temperature rise per unit time of the cooking utensil 9, and the control circuit 35 detects the surface temperature To from the “wireless area (NEW)” and “wireless area (OLD)”. The difference between the latest detection result of the surface temperature To and the previous detection result is calculated as the temperature change rate ΔTo.

When the control circuit 35 calculates the temperature change rate ΔTo in step S26, the control circuit 35 proceeds to step S27. Here, the latest surface temperature To of the “wireless area (NEW)” is moved to the “wireless area (OLD)” and the default data is recorded in the “wireless area (NEW)”. To reset.
When the control circuit 35 arranges the “wireless area (NEW)” and “wireless area (OLD)” of the RAM in step S27, the calculation result of the temperature change rate ΔTo is compared with the determination value ΔT recorded in advance in the ROM in step S28. To do. Here, when “ΔTo <ΔT” is detected, it is determined that the cooking utensil 9 has reached the recognition temperature Tw by boiling water, and the heat retention process is set in the cooking flag in step S21.

  As shown in FIG. 9, the dedicated hot water cooking is to detect the infrared transmission result of the direct surface temperature To while heating the cooking utensil 9 with a strong heating power of 3 kW, and the rising temperature ΔTo of the cooking utensil becomes dull. It ends based on that. When it is detected that wireless cooking information does not exist in the “wireless area (NEW)” in step S11 of FIG. 8 during this dedicated automatic kettle cooking, the recognition is changed that a general-purpose cooking utensil is used, No hot water cooking is performed. That is, when the pan-side power source 21 drops to an uncontrollable level during the dedicated hot water cooking, the wireless cooking information from the temperature data transmission unit 23 is lost, and the dedicated hot water cooking is automatically switched to general-purpose hot water cooking.

  When the control circuit 35 detects that the cooking flag is set to the heat retaining process in step S4 in FIG. 7, the control circuit 35 initializes the thermal power to the heat retaining value (<1 kW) in the heat retaining process in step S6. When the wireless cooking information is present, the heating power is adjusted in the vicinity of the heat insulation value so that the wireless surface temperature To is maintained at the recognition temperature Tw, and when the wireless cooking information is not present, the wired surface temperature Ts is heated to the recognition temperature Tw. Adjust the thermal power around the heat insulation value so that it is maintained.

  According to the first embodiment, the external temperature sensor 20 is provided in the cooking utensil 9 that is not affected by the IH coil 14 and does not include the top plate 3 that is a product of the temperature gradient. Since the cooking content is controlled based on wireless communication of the corresponding cooking information, the actual temperature of the cooking utensil 9 can be detected with high accuracy without performing step-down control of the heating power. For this reason, since the cooking utensil 9 can be continuously heated with a strong heating power, the cooked product can be finished in a desired state in a short time.

  Infrared rays were used as a cooking information transmission medium. Since this infrared ray has a wider transmission area than radio waves, the cooking information can surely reach the infrared light receiving circuit 41 without being affected by the setting posture with respect to the heating mark 8. In addition, since infrared rays are not affected by magnetism, cooking information can surely reach the infrared light receiving circuit 41 without being influenced by magnetism from the IH coil 14.

A battery was used as the pan-side power source 21. For this reason, since it is not necessary to transmit a power supply by radio waves from the heating cooker side, the electrical configuration is simplified.
It was detected that the output of the pan-side power supply 21 was abnormally lowered, and an abnormality was notified on the heating cooker side. For this reason, since trouble notification can be recognized and the pan-side power supply 21 can be replaced before obstructing infrared transmission of cooking information, maintenance performance is improved.

  An internal temperature sensor 15 was provided on the heating cooker side, and the utilization state of the internal temperature sensor 15 was controlled according to the infrared transmission state of cooking information. For this reason, cooking can be continued based on the detection result from the internal temperature sensor 15 when the pan-side power supply 21 is turned off during cooking and infrared transmission of cooking information disappears during cooking. In addition, when the pan-side power source 21 is replaced during cooking and infrared transmission of cooking information occurs during cooking, cooking can be continued based on the result of infrared transmission of temperature information. Cooking can be continued even when it is restored.

Since the temperature data transmission unit 23 is composed of an infrared transmission module, the temperature data transmission unit 23 can be easily attached to the cooking utensil 9.
<Example 2>
As shown in FIG. 11, a temperature switch 43 is fixed to the handle portion 11 of the dedicated cooking utensil 9 so as to be located in the handle cover 33, and the pan-side power source 21 is connected to a power source as shown in FIG. 12. The circuit 26 is electrically connected through a temperature switch 43. The temperature switch 43 uses a bimetal as a movable contact, and switches from an off state to an on state with the detected temperature “Tb” as a boundary. That is, when the surface temperature To of the cooking utensil 9 is equal to or lower than the detected temperature “Tb”, the temperature data transmitting unit 23 is disconnected based on the temperature switch 43 being turned off, and the surface temperature To of the cooking utensil 9 is detected at the detected temperature “Tb”. When the temperature is exceeded, the temperature data transmission unit 23 is energized based on the temperature switch 43 being turned on. Therefore, the temperature data transmission unit 23 is activated on the condition that the surface temperature To of the cooking utensil 9 exceeds the detected temperature “Tb”, and starts infrared transmission of cooking information. The temperature switch 43 corresponds to switch means.

  The control circuit 35 of the inverter control unit 34 controls the contents of the automatic hot water cooking based on the control programs shown in FIGS. That is, when the cooking utensil 9 is used, since there is no wireless cooking information until the surface temperature To reaches the detected temperature “Tb”, general-purpose hot water cooking is performed. Since the wireless cooking information exists after the surface temperature To of the cooking utensil 9 exceeds the detected temperature “Tb”, dedicated hot water cooking is performed. Since this detected temperature “Tb” is set smaller than the general-purpose boiling water determination temperature Tl (specifically 45 ° C.), before “Tl ≦ Ts ≦ Th” is detected in step S14. The infrared transmission of cooking information is started from the temperature data transmission unit 23, and the general hot water cooking is switched to the dedicated hot water cooking before the heating power is lowered from the initial strong output “3 kW” to the medium output “2 kW” in step S15. . That is, as shown in FIG. 13, the cooking utensil 9 is continuously heated with a strong initial heating power until reaching the boiling water recognition temperature Tw.

According to the said 2nd Example, the power supply was given to the temperature data transmission part 23 from the pan side power supply 21 according to the surface temperature To of the cooking utensil 9. FIG. For this reason, only when the surface temperature To of the cooking utensil 9 enters the area that needs to be detected, power is supplied from the pan-side power source 21 to the temperature data transmission unit 23, and cooking information is transmitted from the temperature data transmission unit 23 by infrared rays. Since it can do, consumption of the pot side power supply 21 can be suppressed.
<Example 3>
As shown in FIG. 14, an annular loop coil 44 is fixed to the dedicated cooking utensil 9 on the lower surface of the container portion 10. The loop coil 44 corresponds to a secondary coil that is magnetically coupled to the IH coil 14 on the basis of setting the cooking utensil 9 on the heating mark 8 of the top plate 3, as shown in FIG. The temperature data transmitter 23 is electrically connected to the rectifier circuit 45 via a lead wire. This rectifier circuit 45 converts the induced voltage of the loop coil 44 into a direct current, and a switching power supply circuit 46 corresponding to a stable power supply unit is electrically connected to the rectifier circuit 45. The switching power supply circuit 46 is stabilized by switching the rectified output from the rectifier circuit 45, and the temperature data transmitter 23 drives the stable output from the switching power supply circuit 46 to the power supply.

  FIG. 16 shows the relationship between the input power “kW” of the IH coil 14 and the rectified output “V” from the rectifier circuit 45, and the rectified output from the rectifier circuit 45 is proportional to the input power of the IH coil 14. growing. Since this rectified output is ensured to “10 V or more” even if the input power fluctuates from the low value “200 W” to the high value “3 kW”, the switching power supply circuit 46 is rated by switching the rectified output from the rectifier circuit 45. It is possible to generate a drive power source with a stable level that does not fall below the value.

According to the third embodiment, the loop coil 44 is magnetically coupled to the IH coil 14 based on the setting of the cooking utensil 9 on the heating mark 8 of the top plate 3, and the IH coil 14 to the loop coil 44. Since the power is supplied, there is no need to install a battery in the cooking utensil 9. This eliminates the need to replace the battery, improving the maintainability.
Since the loop coil 44 is disposed at the bottom of the cooking utensil 9, the mechanical separation distance between the loop coil 44 and the IH coil 14 is shortened with the cooking utensil 9 set on the heating mark 8. For this reason, since the electromotive force of the loop coil 44 is increased, it is possible to reliably generate a power supply having a rated level necessary for normal driving of the temperature data transmission unit 23 even when the output of the IH coil 14 is small.

Since the rectified output from the rectifier circuit 45 is stabilized by the switching power supply circuit 46, even when the electromotive force of the loop coil 44 varies based on the output variation of the IH coil 14, it is possible to stably generate a power supply at a constant level. it can.
<Example 4>
As shown in FIG. 17, a rectification output detection circuit 47 corresponding to a rectification output detection unit is electrically connected to the control circuit 32 of the temperature data transmission unit 23. The rectification output detection circuit 47 outputs a voltage signal at a level corresponding to the rectification output from the rectification circuit 45, and the control circuit 32 performs A / D conversion on the voltage signal from the rectification output detection circuit 47 to obtain a voltage signal. The magnitude of the rectified output is detected based on the result of A / D conversion.

  A power supply circuit 48 corresponding to a stable power supply unit is electrically connected to the rectifier circuit 45. The power supply circuit 48 generates drive power for the temperature data transmission unit 23, and is composed of a series regulator that steps down the rectified output from the rectifier circuit 45 to "5V" due to transistor loss. In addition, an output suppression circuit 49 is electrically connected to the control circuit 32. The output suppression circuit 49 includes a transistor 50 and a resistor 51, and the control circuit 32 enables the resistor 51 based on turning on the transistor 50 and steps down the rectified output from the rectifier circuit 45. This step-down processing is performed by the control circuit 32 based on the detection result of the rectified output. As shown in FIG. 18, the transistor 50 is turned on when the detection result of the rectified output reaches “20V”. Thus, the rectified output is suppressed to “25 V” which is lower than the withstand voltage of the power supply circuit 48 with respect to the high output value “3 kW” of the IH coil 14. The control circuit 32 and the resistor 51 correspond to a rectification output control unit and a load.

According to the fourth embodiment, when the rectified output from the rectifier circuit 45 is larger than the determination value “20V”, the rectified output is suppressed based on enabling the resistor 51, and the power supply from the rectifier circuit 45 is reduced. Since a rectified output at a level not exceeding the withstand voltage is given to the circuit 48, an inexpensive series regulator can be used as the power supply circuit 48 without failure.
In the said 1st-4th Example, although the temperature data transmission part 23 was fixed to the handle part 11 of the cooking appliance 9, it is not limited to this, For example, you may fix to the container part 10. FIG. In the case of this configuration, it is preferable to fix the temperature data transmission unit 23 to a portion of the container unit 10 where the temperature rise is slow, and specifically, the upper end portion of the container unit 10 is appropriate.

In the first to fourth embodiments, the temperature data transmission unit 23 is modularized, but may be packaged in addition to this. That is, the temperature data transmission unit 23 may be molded with a heat-resistant synthetic resin.
In the first to fourth embodiments, the cooking information from the temperature data transmission unit 23 is used when the heat retaining process is performed using the dedicated cooking utensil 9, but the present invention is not limited to this. A temperature signal from the temperature sensor 15 may be used.

  In the first to fourth embodiments, the presence / absence of water boiling is determined based on cooking information from the temperature data transmission unit 23, but in addition to this, the presence / absence of water may be determined. In the case of this configuration, when boiling of water is confirmed within the determination time or less based on cooking information from the temperature data transmission unit 23, it is determined that water is not present, and automatic boiling water cooking is stopped. preferable.

In the first to fourth embodiments, the cooking information from the temperature data transmission unit 23 is used for automatic kettle cooking. However, the cooking information is not limited to this, and cooking such as tempura cooking, hot water cooking, and fried food cooking is possible. It can utilize for the automatic cooking performed by heating the instrument 9 to preset temperature.
In the said 1st-4th Example, although it was set as the structure which detects the surface temperature To of the cooking utensil 9 with the external temperature sensor 20, it is not limited to this, For example, the inside of the cooking utensil 9 with the external temperature sensor 20 The temperature of the cooked product may be detected, and the temperature data transmitting unit 23 of the cooking utensil 9 may transmit the temperature of the cooked product as infrared information to the infrared light receiving circuit 41 of the heating cooker by infrared transmission. In this case, the external temperature sensor 20 may be fixed to the inner peripheral surface of the container portion 10 of the cooking utensil 9.
In the first to fourth embodiments, in addition to the invention described in the claims, each of the other inventions 1 to 11 is described.
<Other Description of Invention 1>
Support means for supporting the cooking utensil, heating means for heating the cooking utensil, receiving means capable of receiving temperature information of the cooking utensil or the cooking object in the cooking utensil transmitted from outside by infrared, and the receiving means A heating cooker comprising: control means for driving and controlling the heating means based on the reception result of.
Other invention 1 controls the heating means based on wirelessly transmitting temperature information to the receiving means from the outside, and particularly uses infrared rays as a transmission medium. Hereinafter, the meaning of the terms described in Invention 1 will be described.
1) Support means: mechanically supports the cooking utensil.
2) Receiving means: receiving temperature information transmitted from outside by infrared rays. This temperature information refers to the temperature information of the cooking utensil or the temperature information of the cooked food in the cooking utensil, and the temperature information is relative to the absolute temperature of the cooking utensil and the reference value of the cooking utensil. It refers to information relating to temperature, such as temperature, rate of change of cooking utensils, absolute temperature of cooked food, relative temperature of cooked food and a reference value of cooked food, and rate of change of cooked food temperature.
3) Control means: Controls cooking contents based on driving control of the heating means, and switches the inverter circuit that converts a DC power source into a high-frequency power source to control the amount of electric power supplied from the inverter circuit to the heating means. It is preferable to control the above. This control means controls the heating means based on the reception result of the receiving means, and the cooking content is controlled based on temperature information from the outside.
According to the other invention 1, the temperature detection means is provided in the cooking utensil that is not adversely affected by the heating means and does not include the product of the temperature gradient, and the temperature information corresponding to the detection result of the temperature detection means is wirelessly communicated. Since the cooking contents can be controlled, the actual temperature of the cooking utensil can be detected with high accuracy without performing stepwise lowering control of the thermal power. For this reason, since the cooking utensil can be continuously heated with a high heating power, it becomes possible to finish the cooked product in a desired state in a short time. In addition, infrared rays are used as a transmission medium for temperature information. Since this infrared ray has a wider transmission area than radio waves, the temperature information can reach the receiving means accurately and reliably without being affected by the setting posture of the cooking utensil. In addition, since infrared rays are not affected by magnetism, temperature information reaches the receiving means accurately and reliably without being affected by magnetism from the electromagnetic cooker.
<Other Description of Invention 2>
Temperature detecting means for detecting the temperature of the cooking utensil via the support means;
The control means includes
When there is temperature information transmitted by infrared rays from outside, the heating means is driven and controlled based on temperature information from outside,
2. The cooking device according to claim 1, wherein when there is no temperature information transmitted from the outside by infrared rays, the heating unit is driven and controlled based on a detection result of the temperature detection unit.
Other invention 2 provides temperature detection means on the cooking device side, and controls the utilization state of the temperature detection means in accordance with the infrared transmission state of temperature information from the outside. Specifically, when the temperature information is transmitted from the outside by infrared rays, the cooking content is controlled based on the infrared transmission result, and when the temperature information is not transmitted from the outside by infrared rays, based on the temperature detection result on the cooking device side. It controls cooking contents. According to this other invention 2, for example, when the battery of the cooking utensil is cut off during cooking and the infrared transmission of the temperature information disappears during cooking, cooking is continued based on the detection result of the temperature detection means on the cooking device side. Can do. In addition, when the battery of the cooking utensil is replaced or charged during cooking, and infrared transmission of temperature information occurs during cooking, cooking can be continued based on the result of infrared transmission of temperature information. Cooking can continue even when exhausted and restored.
<Other Description of Invention 3>
In other cooking utensils usable in the heating cooker according to any one of the inventions 1 and 2,
Temperature detecting means for outputting a signal corresponding to the temperature of the food;
A cooking device comprising: transmission means for transmitting temperature information according to an output signal from the temperature detection means by infrared rays.
In addition, the invention 3 detects the temperature of the food on the cooking utensil side and wirelessly transmits temperature information corresponding to the detected temperature from the cooking utensil side to the heating cooker side by infrared rays. The temperature of the food is detected by the temperature detecting means. This temperature detection means is mechanically connected to the cooking utensil, and is preferably arranged on the side of the cooking utensil in terms of maintaining the placing property of the cooking utensil on the support means, and is arranged at the lower end of the cooking utensil. It is preferable to increase the temperature detectability of the food. The temperature information is transmitted by the transmission means. This transmission means is mechanically connected to the cooking utensil, and the temperature information refers to the information related to the temperature described above. This transmission means is preferably arranged in the handle part of the cooking utensil, and the handle part refers to a grip part for the user to hold the cooking utensil.
<Other Description of Invention 4>
A cooking utensil according to another invention 3 comprising a battery for supplying electric power to the transmission means by wire.
Other invention 4 is to supply electric power to the transmitting means from the battery of the cooking utensil, and the battery corresponds to a primary battery, a secondary battery, a solar battery or the like. According to the fourth aspect of the present invention, it is not necessary to transmit power from the heating cooker side to the cooking utensil side by radio waves, so that the electrical configuration is simplified.
<Other Description of Invention 5>
The cooking utensil according to another aspect of the invention, further comprising switch means for opening and closing a feeding path between the battery and the transmission means in accordance with the temperature of the food.
In the other invention 5, a temperature switch is interposed in the power supply path between the battery and the transmission means. This temperature switch refers to a spontaneous switch that changes its state depending on the temperature of the cooking utensil, and a power source is applied to the transmitting means according to the temperature of the cooking utensil. According to the fifth aspect of the present invention, only when the temperature of the cooking utensil enters the area that needs to be detected, the battery can be supplied with power and the temperature information from the transmission means can be transmitted by infrared. It becomes possible to reduce the amount.
<Other Description of Invention 6>
The said transmission means is provided with the output detection part which detects the output of the said battery, The cooking appliance in any one of invention 4-5 characterized by the above-mentioned.
In addition, the invention 6 is provided with an output detection unit for detecting the output of the battery, and the detection result of the output detection unit is preferably transmitted by infrared rays from the transmission means. According to the other 6, it is possible to detect that the output of the battery has dropped to the replacement level or the charge level, and to notify the abnormality on the cooking utensil side or the heating cooker side. For this reason, since the abnormality notification can be recognized and the battery can be replaced or charged before the wireless transmission of the temperature information is hindered, the maintainability is improved.
<Other Description of Invention 7>
4. A cooking utensil according to another invention 3, further comprising a secondary coil that generates a power source for the transmitting means based on magnetic coupling to the primary coil in a non-contact manner.
In addition, the invention 7 is such that the cooking appliance is provided with a secondary coil. The secondary coil generates electromotive force based on non-contact magnetic coupling with the primary coil, and the transmission means drives the electromotive force of the secondary coil to a power source. According to this other invention 7, the secondary coil of the cooking utensil is magnetically coupled to the heating coil of the electromagnetic cooking appliance based on setting the cooking utensil on the support means of the electromagnetic cooking appliance, and the secondary coil is changed from the heating coil to the secondary coil. Since it is possible to supply power to the cooking appliance, it is not necessary to install a battery in the cooking utensil. This eliminates the need to replace or charge the battery, improving the maintainability.
<Description of Other Invention 8>
The said secondary coil is provided in the bottom part of the container part in which a foodstuff is thrown in, The cooking appliance of the other invention 7 characterized by the above-mentioned.
The other invention 8 arrange | positions a secondary coil in the bottom part of a container part, and a container part means the part which can be stored among cooking utensils in which foodstuffs are thrown in. According to the invention 8, the mechanical separation distance between the secondary coil and the heating coil is shortened with the cooking utensil set on the support means. For this reason, since the electromotive force of the secondary coil becomes large, it is possible to reliably generate a power supply having a rated level necessary for normal driving of the transmission means even when the output of the heating coil is small.
<Other Description of Invention 9>
The transmission means includes
A rectifying unit that rectifies the output from the secondary coil;
The cooking utensil according to any one of inventions 7 to 8, further comprising: a stable power supply unit that stabilizes a rectified output from the rectifying unit.
The other invention 9 is to stabilize by supplying the output from the secondary coil to the stable power source through the rectifier. According to the invention 9, since the rectified output from the rectifying unit is stabilized by the stable power supply unit, even when the electromotive force of the secondary coil fluctuates based on the fluctuation of the output of the heating coil, a constant level power source can be stabilized. Can be generated.
<Other Description of Invention 10>
The transmission means includes
A rectification output detection unit for detecting the magnitude of the rectification output given from the rectification unit to the stable power supply unit;
A rectification output control unit that controls the magnitude of the rectification output given from the rectification unit to the stable power supply unit by adjusting the size of the load based on the detection result of the rectification output detection unit. Other cooking utensils according to the ninth aspect of the invention.
Other invention 10 controls the magnitude of the rectified output given from the rectifier to the stable power supply based on the actual measurement result. Specifically, the magnitude of the rectified output is adjusted by adjusting the magnitude of the load such as a resistor. Is to control. The adjustment of the load is a term including a two-stage control for switching the load between the invalid state and the valid state. According to the invention 10, since the rectified output from the rectifying unit is large exceeding the judgment value, the rectified output can be suppressed, and a rectified output at a level not exceeding the withstand voltage can be given from the rectifying unit to the stable power supply unit. An inexpensive series regulator can be used as a stable power supply without failure.
<Other Description of Invention 11>
The said transmission means is comprised from the infrared transmission module, The cooking appliance in any one of invention 3-10 characterized by the above-mentioned.
In the other invention 11, the transmission means is composed of an infrared transmission module. This infrared module is an assembly in which components are electrically interconnected in a manner capable of infrared transmission of temperature information, and refers to a physically independent unit. According to the other aspect of the invention, since the transmission means is composed of the infrared transmission module, the transmission means can be easily attached to the cooking utensil.

The figure which shows 1st Example of this invention (The perspective view which shows the external appearance of a cooking heater) The figure which shows the state which set the special cooking utensil to the top plate Block diagram showing electrical configuration of inverter circuit unit and inverter control unit Block diagram showing electrical configuration of temperature data transmitter The figure which shows the relationship between the detection voltage of control circuit and recognition temperature (A) is a figure which shows the drive signal of infrared LED, (b) is a figure which shows the content of the wireless cooking information projected from infrared LED, (c) is a detection signal of the wireless cooking information output from an infrared light receiving circuit. Figure showing Flow chart showing control contents of control circuit Flow chart showing control contents of control circuit The figure which shows the automatic hot water cooking content at the time of using the dedicated cooking appliance which has a wireless communication function The figure which shows the contents of the automatic kettle cooking when the general-purpose cooking utensil which does not have a wireless communication function is used FIG. 2 equivalent diagram showing a second embodiment of the present invention. 4 equivalent diagram Fig. 9 equivalent FIG. 2 equivalent view showing a third embodiment of the present invention. 4 equivalent diagram The figure which shows the relationship between the input electric power of an IH coil, and the rectification output of a rectifier circuit FIG. 4 equivalent view showing the fourth embodiment of the present invention. 16 equivalent diagram FIG. 2 equivalent diagram showing a conventional example

Explanation of symbols

  3 is a top plate (support means), 9 is a cooking utensil, 10 is a container part, 14 is an IH coil (heating means, primary coil), 15 is an internal temperature sensor (temperature detection means), 20 is an external temperature sensor (temperature detection) Means), 21 is a pan side power source (battery), 23 is a temperature data transmission unit (transmission means, infrared transmission module), 27 is a voltage detection circuit (output detection unit), 32 is a control circuit (rectification output control unit), 35 Is a control circuit (control means), 41 is an infrared light receiving circuit (reception means), 43 is a temperature switch (switch means), 44 is a loop coil (secondary coil), 46 is a switching power supply circuit (stable power supply unit), 47 is A rectification output detection circuit (rectification output detection unit), 48 is a power supply circuit (stable power supply unit), and 51 is a resistor (load).

Claims (7)

A cabinet provided inside the system kitchen and having a top plate fixed on the top surface on which a cooking utensil having a container portion into which a food is put is placed;
An IH coil that is provided in the cabinet below the top plate and induction-heats the cooking utensil placed on the top plate;
Temperature detection means provided on the cooking utensil, for detecting the temperature of the container of the cooking utensil;
Transmitting means that is provided in the cooking utensil and transmits temperature information according to the detection result of the temperature detecting means to the top plate by infrared rays;
A translucent portion provided on the top plate;
Receiving means provided in the cabinet below the top plate and receiving temperature information transmitted by infrared rays from the transmitting means through the translucent portion of the top plate;
A heating cooking system comprising a control unit provided inside the cabinet and drivingly controlling the IH coil based on a reception result of the receiving unit. Provided with the cooking utensil, means for pre-recording pan data that is data including the material of the cooking utensil,
The transmitting means transmits the temperature information including the pan data toward the top plate with infrared rays,
The said control means detects each of the temperature and material of the said cooking utensil from the reception result of the said receiving means, and controls the drive of the said IH coil based on each of both detection results. Cooking system. An input means that is provided in the cabinet and can be operated by a user and for inputting cooking conditions;
Indirect temperature detection means for detecting the temperature of a general-purpose cooking utensil provided in the cabinet below the top plate and not equipped with the temperature detection means, via the top plate;
Provided inside the cabinet, comprising current detection means for detecting an input current applied to the IH coil,
The control means includes
When it is determined that a predetermined cooking condition has been input based on the operation of the input means, the top plate is subjected to whether or not temperature information transmitted by infrared from the transmission means exists. It performs a process of discriminating between a dedicated cooking utensil provided with the temperature detecting means and a general-purpose cooking utensil not provided with the temperature detecting means,
When it is determined that the dedicated cooking utensil is placed on the top plate, the temperature and material of the dedicated cooking utensil are detected based on the reception result of the receiving means, and both the IH coils are detected. Drive control based on each of the results,
When it is determined that the general-purpose cooking utensil is placed on the top plate, the heating information of the general-purpose cooking utensil is detected based on the detection result of the current detection means, and the detection result of the indirect temperature detection means The heating cooking system according to claim 2, wherein the temperature of the general-purpose cooking utensil is detected based on the control and the IH coil is driven and controlled based on both detection results. A battery that is provided in the cooking utensil and supplies power to the transmission means by wire;
A voltage detection circuit that is provided in the cooking utensil and generates a voltage signal corresponding to the voltage level of the battery;
Provided in the cabinet, provided with a notification means for notifying the user that the output of the battery has abnormally decreased,
The transmission means includes
Processing for detecting the voltage level of the battery based on the detection result of the voltage detection circuit;
A process of determining whether or not the output of the battery is abnormally reduced based on comparing the detection result of the voltage level with a predetermined determination value;
Performing a process of transmitting the infrared information toward the top plate including the determination result of the presence or absence of the abnormal decrease as the temperature information,
The control means includes
A process of detecting the determination result of the presence or absence of the abnormality drop from the reception result of the receiving means;
2. The cooking process according to claim 1, wherein when it is detected that there is an abnormal decrease, the notification means is used to notify the user that the output of the battery has abnormally decreased. system. An input means that is provided in the cabinet and can be operated by a user and for inputting cooking conditions;
Indirect temperature detection means for detecting the temperature of a general-purpose cooking utensil provided inside the cabinet below the top plate and not equipped with the temperature detection means via the top plate;
The control means includes
The top plate is based on whether or not there is temperature information transmitted by infrared from the transmitting means when it is determined that automatic hot water cooking for boiling water is input based on the operation of the input means. A process for mutually determining which one of the dedicated cooking utensil provided with the temperature detection means and the general-purpose cooking utensil not provided with the temperature detection means is placed,
When it is determined that the general-purpose cooking utensil is placed on the top plate,
Processing for detecting the temperature of the general-purpose cooking utensil based on the detection result of the indirect temperature detection means;
The output of the IH coil is decreased stepwise as the temperature detection result increases based on comparing the temperature detection result with each of a plurality of determination values having different sizes. A process of selecting the output of the IH coil from a plurality of outputs having different sizes;
A process of driving the IH coil with the output selection result;
A process of calculating a rate of change per unit time of the temperature detection result in a state where the IH coil is driven with the smallest output among the plurality of outputs;
The calculation result of the change rate is compared with a predetermined determination value, and based on the determination that the calculation result of the change rate is lower than the determination value, the IH coil is driven with the smallest output. To finish the process,
When it is determined that the dedicated cooking utensil is placed on the top plate,
A process of driving the IH coil with the highest output among the plurality of outputs regardless of temperature information transmitted by infrared rays from the transmission means;
Processing for detecting the temperature of the dedicated cooking utensil based on temperature information transmitted by infrared rays from the transmission means;
Processing for calculating the rate of change per unit time of the temperature detection result;
A process of comparing the calculation result of the change rate with the determination value and ending driving at the highest output of the IH coil based on determining that the calculation result of the change rate is lower than the determination value. The cooking system according to claim 1, wherein the cooking system is performed. A battery which is provided in the dedicated cooking utensil and supplies power to the transmission means by wire;
Provided in the dedicated cooking utensil, and when the temperature of the dedicated cooking utensil is equal to or lower than the detection temperature, the power supply path between the battery and the transmission means is opened and the temperature of the dedicated cooking utensil is A switch means that is turned on to close a power supply path between the battery and the transmission means when the detected temperature is exceeded,
6. The cooking system according to claim 5, wherein the smallest one of the plurality of determination values for selecting the output of the IH coil is set higher than the detected temperature of the switch means. . In the cooking utensil which can be used for the heating cooking system according to any one of claims 1 to 6,
A container portion into which a cooked product is charged, which is induction-heated by the IH coil;
Temperature detecting means for detecting the temperature of the container part;
A cooking utensil comprising transmission means for transmitting temperature information corresponding to a detection result of the temperature detection means to the top plate by infrared rays.

Images