JP5887516B2 - Induction heating cooker - Google Patents

Induction heating cooker Download PDF

Info

Publication number
JP5887516B2
JP5887516B2 JP2012519245A JP2012519245A JP5887516B2 JP 5887516 B2 JP5887516 B2 JP 5887516B2 JP 2012519245 A JP2012519245 A JP 2012519245A JP 2012519245 A JP2012519245 A JP 2012519245A JP 5887516 B2 JP5887516 B2 JP 5887516B2
Authority
JP
Japan
Prior art keywords
cooking
output voltage
detection
detection unit
burn
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.)
Active
Application number
JP2012519245A
Other languages
Japanese (ja)
Other versions
JPWO2011155180A1 (en
Inventor
信尚 一法師
信尚 一法師
野口　新太郎
新太郎 野口
小笠原　史太佳
史太佳 小笠原
輝雄 林中
輝雄 林中
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
Priority to JP2012519245A priority Critical patent/JP5887516B2/en
Publication of JPWO2011155180A1 publication Critical patent/JPWO2011155180A1/en
Application granted granted Critical
Publication of JP5887516B2 publication Critical patent/JP5887516B2/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

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
    • 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

Landscapes

  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Induction Heating Cooking Devices (AREA)

Description

本発明は、焦げ付きを検知する機能を備えた誘導加熱調理器に関するものである。   The present invention relates to an induction heating cooker having a function of detecting burning.

従来、この種の加熱調理器は、調理容器を加熱する加熱コイルと、加熱コイルの上方で調理容器を載置する天板と、天板の下に設置され調理容器の底面から放射される赤外線を検出する赤外線検出手段と、赤外線検出手段の出力から調理容器の温度を検知する温度検知手段と、温度検知手段の出力より得られた温度の温度勾配により焦げ付いたかどうかを判定し入力電力を制御する制御手段とを備えて、これによって、赤外線検出手段を介して温度検知手段で検知した温度の温度勾配により焦げ付いたかどうかを判定するので、複雑な処理を行うことなく精度良く焦げ付きが判定でき、入力電力が制御できるとしている（例えば、特許文献１参照）。   Conventionally, this type of cooking device has a heating coil for heating the cooking vessel, a top plate for placing the cooking vessel above the heating coil, and an infrared ray installed under the top plate and radiated from the bottom surface of the cooking vessel. Infrared detection means for detecting the temperature, temperature detection means for detecting the temperature of the cooking container from the output of the infrared detection means, and determining whether or not it is burned by the temperature gradient of the temperature obtained from the output of the temperature detection means, and controlling the input power Control means to determine whether or not it has been burned by the temperature gradient of the temperature detected by the temperature detection means via the infrared detection means, so it can be determined accurately without performing complicated processing, The input power can be controlled (see, for example, Patent Document 1).

つまり、加熱開始後に鍋底温度の変化パターンにより調理状態を判定し、例えば、鍋の水分が多い調理（例えば、煮物）と判定すると、焦げ付き検知機能を有効にする構成となっている。以下、図６を用いて説明する。   That is, when the cooking state is determined based on the pan bottom temperature change pattern after the start of heating, for example, when the cooking state is determined to be cooking with a lot of water in the pan (for example, boiled food), the scorching detection function is enabled. Hereinafter, a description will be given with reference to FIG.

図６は従来の誘導加熱調理器の調理状態判定シーケンスのフローチャートである。   FIG. 6 is a flowchart of a cooking state determination sequence of a conventional induction heating cooker.

従来の構成では、加熱を開始し（Ｓ２０１）、赤外線センサの出力電圧が第１の出力電圧値に到達したことを検出すると（Ｓ２０２）、赤外線センサの出力電圧の勾配を監視し、赤外線センサの出力電圧の勾配が第１の出力電圧勾配より小さい場合には、鍋の水分が多い調理（例えば、煮物）と判定し（Ｓ２０３）、焦げ付き検知を有効とする（Ｓ２０４）。焦げ付き判定が有効になると、赤外線センサの出力電圧が焦げ付き判定する温度に到達した時に（Ｓ２０６）焦げ付きと判定する（Ｓ２０７）ようにしている。   In the conventional configuration, heating is started (S201), and when detecting that the output voltage of the infrared sensor has reached the first output voltage value (S202), the gradient of the output voltage of the infrared sensor is monitored, When the gradient of the output voltage is smaller than the first output voltage gradient, it is determined that the pan has a lot of moisture (for example, boiled food) (S203), and scoring detection is enabled (S204). When the burn-in determination is enabled, it is determined that the burn-in is detected (S207) when the output voltage of the infrared sensor reaches the temperature at which burn-in is determined (S206).

一方、赤外線センサの出力電圧の勾配が第１の出力電圧勾配より大きい場合には、鍋の水分が少ない調理（例えば、炒め物）と判定し（Ｓ２０３）、焦げ付き検知を無効とする（Ｓ２０５）。   On the other hand, when the gradient of the output voltage of the infrared sensor is larger than the first output voltage gradient, it is determined that the pan has less moisture (for example, fried food) (S203), and the scorch detection is invalidated (S205). .

特開２００７−１１５５１５号公報JP 2007-115515 A

しかしながら、前記従来の構成では、図６のＳ２０３における判定以降に、鍋を置き換えても、加熱を停止して再度Ｓ２０１から開始しない限りは、調理状態の判定は変更されない。このことにより、鍋の水分が多い調理（例えば、煮物）と判定されずに、焦げ付き検知が無効となっている状態（例えば、炒め物）から鍋を置き換えて鍋の水分が多い調理を開始した場合に、焦げ付き検知が無効のまま調理を続けることになるという課題を有していた。   However, in the conventional configuration, even if the pan is replaced after the determination in S203 of FIG. 6, the determination of the cooking state is not changed unless heating is stopped and the process is started again from S201. As a result, cooking with a lot of water in the pan was started by replacing the pan from a state where the burnt detection was disabled (for example, stir-fried food) without being judged as cooking with a lot of moisture in the pan (for example, boiled food). In this case, there is a problem that cooking is continued with the detection of burnt being invalid.

本発明は、前記従来の課題を解決するもので、鍋の置き換えと共に調理状態が変化した場合にも調理状態を判定し、焦げ付き検知を適切に機能させることで、使用者の利便を高めることを可能とした誘導加熱調理器を提供することを目的とする。   The present invention solves the above-mentioned conventional problems, and determines the cooking state even when the cooking state changes with the replacement of the pan, and enhances the convenience of the user by appropriately functioning the burnt detection. It aims at providing the induction heating cooking appliance which enabled.

前記従来の課題を解決するために、本発明の誘導加熱調理器は、調理容器を載置するトッププレートと、前記トッププレートの下に設けられ前記調理容器を加熱する誘導加熱コイルを含むインバータと、前記インバータを制御する制御部と、前記トッププレートの下に設けられ前記調理容器の底から放射されて前記トッププレートを透過する赤外線を検知して前記調理容器の底温度に対応する出力電圧を出力する赤外線センサと、を備え、前記制御部は、前記調理容器の水分量を判定する調理状態判別シーケンスと、前記調理容器の底に調理物が焦げ付いたと判定する焦げ付き検知部と、前記インバータの動作状態から調理容器が載置されているかいないかを判定する調理容器検知部を備え、前記調理状態判別シーケンスにより調理状態が確定し、前記焦げ付き検知部による焦げ付き検知の有効無効判定が確定した状態において、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うようにしている。 In order to solve the conventional problem, an induction heating cooker according to the present invention includes a top plate on which a cooking container is placed, and an inverter including an induction heating coil provided under the top plate and heating the cooking container. A control unit for controlling the inverter; and an output voltage corresponding to a bottom temperature of the cooking vessel by detecting infrared rays that are provided under the top plate and are radiated from the bottom of the cooking vessel and pass through the top plate. An infrared sensor for outputting, a cooking state determination sequence for determining a moisture content of the cooking container, a burnt detection unit for determining that a cooked product has burned to the bottom of the cooking container, and the inverter It includes determining the cooking vessel detection unit whether the cooking container from the operating state is not or is placed, probability cooking condition by the cooking status determination sequence And, in a state where the enable disable judgment is finalized detection scorching by the scorching detection unit detects that the cooking vessel is removed by the cooking vessel detection unit during cooking, the determination and the scorching detection of the cooking status determination sequence The burn-in detection validity / invalidity determination by the unit is initialized, the determination by the cooking state determination sequence is performed again, and the burn-in detection determination by the burnt detection unit is performed .

これによって、調理中に調理容器の置き換えが発生したことを検知して、調理状態判別シーケンスを再度行うことができ、適切に焦げ付き検知を機能させることができる。   Thereby, it can be detected that the cooking container has been replaced during cooking, the cooking state determination sequence can be performed again, and burnt detection can be appropriately performed.

本発明の誘導加熱調理器は、調理容器の置き換えと共に調理状態が変化した場合にも調理状態を判定し、焦げ付き検知を適切に機能させることで、適切に焦げ付き検知を機能させることができる。   The induction heating cooker according to the present invention can appropriately detect the burn-in by determining the cooking state even when the cooking state is changed along with the replacement of the cooking container, and appropriately causing the burn-in detection to function.

図１は本発明の実施の形態１における誘導加熱調理器の全体回路ブロック図1 is an overall circuit block diagram of an induction heating cooker according to Embodiment 1 of the present invention. 図２は本発明の実施の形態１における誘導加熱調理器の調理状態判定シーケンスのフローチャートFIG. 2 is a flowchart of a cooking state determination sequence of the induction heating cooker according to the first embodiment of the present invention. 図３は本発明の実施の形態１における誘導加熱調理器の調理状態判定シーケンスを説明するためのグラフFIG. 3 is a graph for explaining a cooking state determination sequence of the induction heating cooker in the first embodiment of the present invention. 図４は本発明の実施の形態２における誘導加熱調理器の調理状態判定シーケンスを説明するためのグラフFIG. 4 is a graph for explaining a cooking state determination sequence of the induction heating cooker according to the second embodiment of the present invention. 図５は本発明の実施の形態３における誘導加熱調理器の調理状態判定シーケンスを説明するためのグラフFIG. 5 is a graph for explaining a cooking state determination sequence of the induction heating cooker in the third embodiment of the present invention. 図６は従来の誘導加熱調理器の調理状態判定シーケンスのフローチャートFIG. 6 is a flowchart of a cooking state determination sequence of a conventional induction heating cooker.

第１の発明は、調理容器を載置するトッププレートと、前記トッププレートの下に設けられ前記調理容器を加熱する誘導加熱コイルを含むインバータと、前記インバータを制御する制御部と、前記トッププレートの下に設けられ前記調理容器の底から放射されて前記トッププレートを透過する赤外線を検知して前記調理容器の底温度に対応する出力電圧を出力する赤外線センサと、を備え、前記制御部は、前記調理容器の水分量を判定する調理状態判別シーケンスと、前記調理容器の底に調理物が焦げ付いたと判定する焦げ付き検知部と、前記インバータの動作状態から調理容器が載置されているかいないかを判定する調理容器検知部を備え、前記調理状態判別シーケンスにより調理状態が確定し、前記焦げ付き検知部による焦げ付き検知の有効無効判定が確定した状態において、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うものである。この構成により、調理中に調理容器の置き換えが発生したことを検知して、調理状態判別シーケンスを再度行うことができ、適切に焦げ付き検知を機能させることができる。 The first invention includes a top plate on which a cooking container is placed, an inverter including an induction heating coil provided under the top plate for heating the cooking container, a control unit for controlling the inverter, and the top plate An infrared sensor that is provided below and detects an infrared ray radiated from the bottom of the cooking vessel and transmitted through the top plate, and outputs an output voltage corresponding to the bottom temperature of the cooking vessel, and the control unit includes: The cooking state determination sequence for determining the moisture content of the cooking container, the burn detection unit for determining that the cooked food has burnt on the bottom of the cooking container, and whether the cooking container is placed from the operating state of the inverter the equipped determining cooking vessel detection unit, the cooking condition cooking condition is determined by determination sequence, the detection scorching by the scorching detection portion Initial in a state where the effect disable judgment is established, detects that the cooking vessel is removed by the cooking vessel detection unit during cooking, the judge the validity sensing scorching by the judgment and the scorching detection portion of the cooking state determination sequence reduction was, again, a determination by the cooking state determination sequence, and performs judge the validity detection scorching by the scorching detection portion. With this configuration, it is possible to detect that the cooking container has been replaced during cooking, perform the cooking state determination sequence again, and appropriately function the burn detection.

第２の発明は、特に、第１の発明の誘導加熱調理器において、前記調理状態判別シーケンスは、前記赤外線センサの出力電圧が第１の出力電圧値から所定の出力電圧勾配より小さな勾配で変化した場合には、前記焦げ付き検知部による焦げ付き検知を有効とする一方、前記赤外線センサの出力電圧が第１の出力電圧値から所定の出力電圧勾配より大きい勾配で変化した場合には、前記焦げ付き検知部による焦げ付き検知を無効とし、その後、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うものである。これにより、調理中に調理容器の置き換えが発生したことを検知して、調理状態判別シーケンスを再度行うことができ、適切に焦げ付き検知を機能させることができる。 According to a second aspect of the invention, in the induction heating cooker of the first aspect of the invention, in the cooking state determination sequence, the output voltage of the infrared sensor changes from the first output voltage value at a gradient smaller than a predetermined output voltage gradient. In this case, the scoring detection by the scoring detection unit is validated. On the other hand, if the output voltage of the infrared sensor changes from the first output voltage value with a gradient greater than a predetermined output voltage gradient, the scoring detection is performed. If the detection of the burning container by the cooking unit is invalidated and then the cooking container detection unit detects that the cooking container has been removed during cooking, the determination of the cooking state determination sequence and the validity detection of the burning detection by the burning detection unit are performed. initialize again, a determination by the cooking state determination sequence, judge the validity detection scorching by the scorching detection portion Is performed. Thereby, it can detect that the replacement | exchange of the cooking container generate | occur | produced during cooking, a cooking state determination sequence can be performed again, and a burning detection can be functioned appropriately.

第３の発明は、特に、第２の発明の誘導加熱調理器において、前記焦げ付き検知部による焦げ付き検知が有効な場合は、前記赤外線センサの出力電圧が前記第１の出力電圧値よりも大きい第２の出力電圧値に達すると、前記焦げ付き検知部は調理容器の底に調理物が焦げ付いたと判定し、前記調理容器検知部による調理容器の有無判定を行わないことにより、調理状態判別シーケンスの判定の無用な初期化を極力低減することができる。   In a third aspect of the invention, in particular, in the induction heating cooker of the second aspect of the invention, when the burn detection by the burn detection unit is effective, the output voltage of the infrared sensor is larger than the first output voltage value. When the output voltage value of 2 is reached, the burn detection unit determines that the cooked food has been burned on the bottom of the cooking container, and does not determine whether there is a cooking container by the cooking container detection unit, thereby determining the cooking state determination sequence. Unnecessary initialization can be reduced as much as possible.

第４の発明は、特に、第１の発明の誘導加熱調理器において、前記制御部は、調理開始後に前記インバータに入力される電力を積算する電力積算手段を備え、調理状態判別シーケンスは前記電力積算手段による電力積算値が第１の電力積算値に至るまでに、前記赤外線センサの出力電圧値が第３の出力電圧値に到達しない場合には、前記焦げ付き検知部による焦げ付き検知を有効とする一方、前記赤外線センサの出力電圧値が第３の出力電圧値に到達した場合には、前記焦げ付き検知部による焦げ付き検知を無効とし、その後、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うものである。これにより、第１の発明と同様の効果を奏することができる。 According to a fourth aspect of the invention, in the induction heating cooker of the first aspect of the invention, in particular, the control unit includes a power integration unit that integrates power input to the inverter after cooking is started, and the cooking state determination sequence includes the power When the output voltage value of the infrared sensor does not reach the third output voltage value until the power integrated value by the integrating means reaches the first power integrated value, the burn detection by the burn detection unit is enabled. On the other hand, when the output voltage value of the infrared sensor reaches the third output voltage value, the burn detection by the burn detection unit is invalidated, and then the cooking container is removed by the cooking container detection unit during cooking. When detecting that was, the judge the validity sensing scorching by the judgment and the scorching detection portion of the cooking state determination sequence initialized again, the cooking status determination A judgment by Sequence performs a judge the validity detection scorching by the scorching detection portion. Thereby, the same effects as those of the first invention can be obtained.

第５の発明は、特に、第１の発明の誘導加熱調理器において、前記制御部は、加熱開始からの経過時間を計測する計時手段を備え、前記調理状態判別シーケンスは、前記計時手段により計測した時間が、第１の設定時間に到達するまでの間に、前記赤外線センサの出力電圧が第４の出力電圧値に到達しない場合には、前記焦げ付き検知部による焦げ付き検知を有効とする一方、前記赤外線センサの出力電圧が第４の出力電圧値に到達した場合には、前記焦げ付き検知部による焦げ付き検知を無効とし、その後、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うものである。これにより、第１の発明と同様の効果を奏することができる。 According to a fifth aspect of the invention, in the induction heating cooker of the first aspect of the invention, in particular, the control unit includes a time measuring unit that measures an elapsed time from the start of heating, and the cooking state determination sequence is measured by the time measuring unit. In the case where the output voltage of the infrared sensor does not reach the fourth output voltage value by the time until the first set time is reached, the burn detection by the burn detection unit is enabled, When the output voltage of the infrared sensor reaches the fourth output voltage value, the burn detection by the burn detection unit is invalidated, and then the cooking container is removed by the cooking container detection unit during cooking. Upon detection, the judge the validity sensing scorching by the judgment and the scorching detection portion of the cooking state determination sequence initialized again, by the cooking status determination sequence It was treated with constant, and performs judge the validity detection scorching by the scorching detection portion. Thereby, the same effects as those of the first invention can be obtained.

以下、本発明の実施の形態について、図面を参照しながら説明する。なお、この実施の形態によって本発明が限定されるものではない。   Hereinafter, embodiments of the present invention will be described with reference to the drawings. Note that the present invention is not limited to the embodiments.

（実施の形態１）
図１は、本発明の第１の実施の形態における誘導加熱調理器の全体回路ブロック図、図２は、本発明の第１の実施の形態における誘導加熱調理器の調理状態判定シーケンスのフローチャート、図３は、本発明の第１の実施の形態における誘導加熱調理器の調理状態判定シーケンスを説明するためのグラフ、図４は、本発明の第２の実施の形態における誘導加熱調理器の調理状態判定シーケンスを説明するためのグラフ、図５は、本発明の第３の実施の形態における誘導加熱調理器の調理状態判定シーケンスを説明するためのグラフである。 (Embodiment 1)
FIG. 1 is an overall circuit block diagram of the induction heating cooker according to the first embodiment of the present invention. FIG. 2 is a flowchart of a cooking state determination sequence of the induction heating cooker according to the first embodiment of the present invention. FIG. 3 is a graph for explaining a cooking state determination sequence of the induction heating cooker in the first embodiment of the present invention, and FIG. 4 is cooking of the induction heating cooker in the second embodiment of the present invention. The graph for demonstrating a state determination sequence and FIG. 5 are graphs for demonstrating the cooking state determination sequence of the induction heating cooking appliance in the 3rd Embodiment of this invention.

図１において、トッププレート１２は機器の上面に設けられた結晶化ガラスやセラミックス等からなる耐熱性の板である。誘導加熱コイル１３はトッププレート１２の下方に配置されている。   In FIG. 1, a top plate 12 is a heat-resistant plate made of crystallized glass or ceramics provided on the upper surface of the device. The induction heating coil 13 is disposed below the top plate 12.

トッププレート１２に載置される鍋１１は任意の調理容器であり、誘導加熱コイル１３に対向する位置となる。インバータ回路１４は、制御部２２の指令により誘導加熱コイル１３に高周波電流を供給し、誘導加熱コイル１３とともにインバータを構成する。誘導加熱コイル１３は、高周波電流が供給されると高周波磁界を発生し、鍋１１の底面にその高周波磁界が鎖交することで鍋１１の底面に渦電流が誘起され、鍋１１の抵抗成分により発生するジュール損失による発熱により、鍋１１が加熱される。   The pan 11 placed on the top plate 12 is an arbitrary cooking container and is located at a position facing the induction heating coil 13. The inverter circuit 14 supplies a high-frequency current to the induction heating coil 13 according to a command from the control unit 22 and constitutes an inverter together with the induction heating coil 13. The induction heating coil 13 generates a high-frequency magnetic field when a high-frequency current is supplied, and the eddy current is induced on the bottom surface of the pan 11 by the high-frequency magnetic field interlinking with the bottom surface of the pan 11. The pan 11 is heated by the heat generated by the generated Joule loss.

赤外線センサ１９は、トッププレート１２を介して、鍋１１の底部から放射される赤外線を受け、電圧信号に変換する物である。鍋無し検知部（調理容器検知部）２３は、インバータ回路１４の動作状態から鍋１１がトッププレート１２上に無いことを検出する。鍋無し検出の方法については公知であることと、本願の主旨ではないため省略する。   The infrared sensor 19 receives infrared rays radiated from the bottom of the pan 11 through the top plate 12 and converts them into voltage signals. The no pan detection unit (cooking vessel detection unit) 23 detects that the pan 11 is not on the top plate 12 from the operation state of the inverter circuit 14. The method for detecting the absence of a pan is well known and is not the main point of the present application, and is therefore omitted.

焦げ付き検知部２４は、赤外線センサ１９の出力電圧を基に鍋１１が焦げ付いていることを検知する。詳細は後述する。   The burnt detection unit 24 detects that the pan 11 is burned based on the output voltage of the infrared sensor 19. Details will be described later.

次に、制御部２２に設けられた調理状態判定シーケンスを示す図２と、赤外線センサ１９の出力電圧の経時変化の一例を示す図３を用いて、焦げ付き検知の動作、作用について説明する。   Next, with reference to FIG. 2 showing the cooking state determination sequence provided in the control unit 22 and FIG. 3 showing an example of the change over time of the output voltage of the infrared sensor 19, the operation and action of scoring detection will be described.

図２、図３において、加熱を開始し（Ｓ３０１）、制御部２２において、赤外線センサ１９の出力電圧が第１の出力電圧値４０に到達したことを検出すると（Ｓ３０２）、赤外線センサ１９の出力電圧の勾配を監視し、曲線４３のように、赤外線センサ１９の出力電圧の勾配が第１の出力電圧勾配４２より小さい場合には、鍋１１の水分が多い調理（例えば、煮物）と判定し（Ｓ３０３）、焦げ付き検知を有効とする（Ｓ３０４）。   2 and 3, heating is started (S301), and when the control unit 22 detects that the output voltage of the infrared sensor 19 has reached the first output voltage value 40 (S302), the output of the infrared sensor 19 is output. The gradient of the voltage is monitored, and when the gradient of the output voltage of the infrared sensor 19 is smaller than the first output voltage gradient 42 as shown by the curve 43, it is determined that the cooking of the pan 11 is a lot of water (for example, boiled food). (S303), scoring detection is validated (S304).

焦げ付き判定が有効になると、焦げ付き検知部２４において、赤外線センサ１９の出力電圧が第１の出力電圧値４０よりも大きい第２の出力電圧値４１に到達したことを検知すると（Ｓ３０６、図３のｔ１）焦げ付きと判定する（Ｓ３０８）。   When the burn determination becomes valid, the burn detection unit 24 detects that the output voltage of the infrared sensor 19 has reached the second output voltage value 41 that is larger than the first output voltage value 40 (S306, FIG. 3). t1) It is determined that the image is burnt (S308).

一方、曲線４４のように、赤外線センサ１９の出力電圧の勾配が第１の出力電圧勾配４２より大きい場合には、鍋１１の水分が少ない調理（例えば、炒め物）と判定し（Ｓ３０３）、焦げ付き検知を無効とする（Ｓ３０５）。   On the other hand, when the gradient of the output voltage of the infrared sensor 19 is larger than the first output voltage gradient 42 as shown by the curve 44, it is determined that the pan 11 has less moisture (for example, fried food) (S303), Burning detection is disabled (S305).

ここまでの動作は従来の誘導加熱調理器と同等である。   The operation so far is the same as that of a conventional induction heating cooker.

本実施の形態における誘導加熱調理器においては、調理状態の判別シーケンスにより調理状態が確定した後で（図２のＳ３０４、Ｓ３０５）、鍋無し検知部２３が鍋無しを検知した場合（Ｓ３０９、Ｓ３０７）に焦げ付き検知の有効無効判定をリセット（Ｓ３１０）して、Ｓ３０２から再度、調理状態判定シーケンスによる判定を行うようにしている。   In the induction heating cooker in the present embodiment, when the cooking state is determined by the cooking state determination sequence (S304 and S305 in FIG. 2), the no-pan detection unit 23 detects the absence of the pan (S309, S307). ) Is reset (S310), and the determination by the cooking state determination sequence is performed again from S302.

これにより、調理中に鍋の置き換えが発生したことを検知して、適切に焦げ付き検知を機能させることができる。   Thereby, it can detect that the replacement | exchange of the pan generate | occur | produced during cooking, and can perform a burning detection appropriately.

なお、焦げ付き判定が有効になり、焦げ付き検知部２４で焦げ付きと判定されると（Ｓ３０８）、鍋無し検知部２３による鍋無し検知を行うことなく、調理状態判定シーケンスは終了する。   When the burn determination is enabled and the burn detection unit 24 determines that it is burned (S308), the cooking state determination sequence ends without performing the absence of pan detection by the no pan detection unit 23.

（実施の形態２）
赤外線センサ１９の出力電圧の勾配を監視する方法以外では、例えば、調理開始後にインバータ回路１４に入力される電力を積算する電力積算手段を制御部２２に設け、図４のように、インバータ回路１４への入力電力の積算値が、加熱開始から第１の積算電力値５０に到達するまでの間に、赤外線センサ１９の出力電圧が第３の出力電圧値５１に到達するかしないかで調理状態を判定することもできる。 (Embodiment 2)
Other than the method of monitoring the gradient of the output voltage of the infrared sensor 19, for example, a power integrating means for integrating the power input to the inverter circuit 14 after the start of cooking is provided in the control unit 22, and the inverter circuit 14 as shown in FIG. Whether the output voltage of the infrared sensor 19 reaches the third output voltage value 51 during the period from when heating starts until the integrated value of input power reaches the first integrated power value 50 Can also be determined.

例えば、曲線５２のように、インバータ回路１４への入力電力の積算値が、加熱開始から第１の積算電力値５０に到達するまでの間に、赤外線センサ１９の出力電圧が第３の出力電圧値５１に到達しない場合には、鍋１１の水分が多い調理と判定し、焦げ付き検知を有効とする一方、曲線５３のように、赤外線センサ１９の出力電圧が第３の出力電圧値５１に到達した場合には、鍋１１の水分が少ない調理と判定し、焦げ付き検知を無効とする。   For example, as indicated by a curve 52, the output voltage of the infrared sensor 19 is changed to the third output voltage until the integrated value of the input power to the inverter circuit 14 reaches the first integrated power value 50 from the start of heating. When the value 51 is not reached, it is determined that the pan 11 is cooked with a lot of moisture, and scorch detection is enabled, while the output voltage of the infrared sensor 19 reaches the third output voltage value 51 as indicated by a curve 53. When it does, it determines with cooking with little water | moisture content of the pan 11, and makes a burnt detection invalid.

この構成では、調理状態の判別シーケンスにより調理状態が確定した後で鍋無しを検知した場合に焦げ付き検知の有効無効判定をリセットすると共に積算電力値もリセットし、再度加熱開始後にインバータ回路１４への入力電力の積算を開始する。   In this configuration, when no cooking pan is detected after the cooking state is determined by the cooking state determination sequence, the burnout detection validity / invalidity determination is reset, and the integrated power value is also reset. Start integrating input power.

（実施の形態３）
また、加熱開始からの経過時間を計測する計時手段（例えば、タイマ）を制御部２２に設け、図５のように、計時手段で計測した加熱開始からの経過時間（例えば、タイマのカウント）が、第１の設定時間６０に到達するまでの間に、赤外線センサ１９の出力電圧が第４の出力電圧値６１に到達するかしないかで調理状態を判定することもできる。 (Embodiment 3)
Further, the control unit 22 is provided with a time measuring means (for example, a timer) for measuring the elapsed time from the start of heating, and the elapsed time from the start of heating (for example, a timer count) measured by the time measuring means as shown in FIG. The cooking state can also be determined by whether or not the output voltage of the infrared sensor 19 reaches the fourth output voltage value 61 until the first set time 60 is reached.

例えば、曲線６２のように、計時手段で計測した加熱開始からの経過時間が、第１の設定時間６０に到達するまでの間に、赤外線センサ１９の出力電圧が第４の出力電圧値６１に到達しない場合には、鍋１１の水分が多い調理と判定し、焦げ付き検知を有効とする一方、曲線６３のように、赤外線センサ１９の出力電圧が第４の出力電圧値６１に到達した場合には、鍋１１の水分が少ない調理と判定し、焦げ付き検知を無効とする。   For example, as shown by a curve 62, the output voltage of the infrared sensor 19 reaches the fourth output voltage value 61 until the elapsed time from the start of heating measured by the time measuring means reaches the first set time 60. When it does not reach, it is determined that the pan 11 is cooked with a lot of moisture, and scorch detection is enabled, while the output voltage of the infrared sensor 19 reaches the fourth output voltage value 61 as indicated by a curve 63. Determines that cooking is less in the pan 11 and invalidates the detection of scorching.

この構成では、調理状態の判別シーケンスにより調理状態が確定した後で鍋無しを検知した場合に焦げ付き検知の有効無効判定をリセットすると共に計時手段の計測値もリセットし、再度加熱開始後に計時手段の計測を開始する。   In this configuration, when the absence of the pan is detected after the cooking state is determined by the cooking state determination sequence, the burnout detection validity / invalidity determination is reset and the measurement value of the timing unit is also reset. Start measurement.

このように、調理状態の判定の根拠となる量が異なる場合も、同様の考え方を用いて同様の効果を得ることができる。   In this way, even when the amount that is the basis for the determination of the cooking state is different, the same effect can be obtained using the same concept.

以上のように、本発明にかかる誘導加熱調理器は、鍋の置き換えと共に調理状態が変化した場合にも調理状態を判定し、焦げ付き検知を適切に機能させることで、適切に焦げ付き検知を機能させることができるので、組み込み式、テーブルの上で使用する卓上型、又は置き台の上で使用する据え置き型等で、家庭用又は業務用の誘導加熱調理器に有効である。   As described above, the induction heating cooker according to the present invention determines the cooking state even when the cooking state is changed with the replacement of the pan, and appropriately functions the scoring detection so that the scoring detection functions properly. Therefore, it is effective for an induction heating cooker for home use or business use, such as a built-in type, a desktop type used on a table, or a stationary type used on a table.

１１ 鍋（調理容器）
１２ トッププレート
１３ 加熱コイル
１４ インバータ回路（インバータ）
１９ 赤外線センサ
２２ 制御部
２３ 鍋無し検知部
２４ 焦げ付き検知部
４０ 第１の出力電圧値
４１ 第２の出力電圧値
４２ 第１の出力電圧勾配
４３ 第１の出力電圧勾配より小の特性
４４ 第１の出力電圧勾配より大の特性
５０ 第１の電力積算値
５１ 第３の出力電圧値
５２ 第３の出力電圧値に到達しない特性
５３ 第３の出力電圧値に到達する特性
６０ 第１の設定時間
６１ 第４の出力電圧値
６２ 第１の設定時間の間に第４の出力電圧値に到達しない特性
６３ 第１の設定時間の間に第４の出力電圧値に到達する特性 11 Pan (cooking container)
12 Top plate 13 Heating coil 14 Inverter circuit (inverter)
DESCRIPTION OF SYMBOLS 19 Infrared sensor 22 Control part 23 No pan detection part 24 Burning detection part 40 1st output voltage value 41 2nd output voltage value 42 1st output voltage gradient 43 Characteristic smaller than 1st output voltage gradient 44 1st 50 The first power integrated value 51 The third output voltage value 52 The characteristic that does not reach the third output voltage value 53 The characteristic that reaches the third output voltage value 60 The first set time 61 Fourth output voltage value 62 Characteristics that do not reach the fourth output voltage value during the first set time 63 Characteristics that reach the fourth output voltage value during the first set time

Claims (5)

調理容器を載置するトッププレートと、前記トッププレートの下に設けられ前記調理容器を加熱する誘導加熱コイルを含むインバータと、前記インバータを制御する制御部と、前記トッププレートの下に設けられ前記調理容器の底から放射されて前記トッププレートを透過する赤外線を検知して前記調理容器の底温度に対応する出力電圧を出力する赤外線センサと、を備え、
前記制御部は、前記調理容器の水分量を判定する調理状態判別シーケンスと、前記調理容器の底に調理物が焦げ付いたと判定する焦げ付き検知部と、前記インバータの動作状態から調理容器が載置されているかいないかを判定する調理容器検知部を備え、
前記調理状態判別シーケンスにより調理状態が確定し、前記焦げ付き検知部による焦げ付き検知の有効無効判定が確定した状態において、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うことを特徴とする誘導加熱調理器。 A top plate for placing a cooking vessel; an inverter including an induction heating coil provided under the top plate for heating the cooking vessel; a control unit for controlling the inverter; and the top plate provided under the top plate An infrared sensor that detects infrared rays radiated from the bottom of the cooking vessel and passes through the top plate and outputs an output voltage corresponding to the bottom temperature of the cooking vessel, and
The control unit includes a cooking state determination sequence for determining the moisture content of the cooking container, a burning detection unit for determining that the cooked product has burned to the bottom of the cooking container, and the cooking container from the operating state of the inverter. It has a cooking container detector that determines whether or not
In the state where the cooking state is determined by the cooking state determination sequence and the effective / ineffective determination of the burning detection by the burning detection unit is determined, the cooking container detection unit detects that the cooking container has been removed during cooking, Initializing the determination of the cooking state determination sequence and the validity / invalidity determination of the burnt detection by the burnt detection unit, performing the determination by the cooking state determination sequence again, and performing the validity / invalidity determination of the burnt detection by the burnt detection unit Induction heating cooker featuring. 前記調理状態判別シーケンスは、前記赤外線センサの出力電圧が第１の出力電圧値から所定の出力電圧勾配より小さな勾配で変化した場合には、前記焦げ付き検知部による焦げ付き検知を有効とする一方、前記赤外線センサの出力電圧が第１の出力電圧値から所定の出力電圧勾配より大きい勾配で変化した場合には、前記焦げ付き検知部による焦げ付き検知を無効とし、その後、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うことを特徴とする請求項１に記載の誘導加熱調理器。 In the cooking state determination sequence, when the output voltage of the infrared sensor is changed from the first output voltage value with a gradient smaller than a predetermined output voltage gradient, the burn detection unit enables the burn detection, When the output voltage of the infrared sensor changes from the first output voltage value at a gradient greater than a predetermined output voltage gradient, the burn detection by the burn detection unit is invalidated, and then the cooking container detection unit during cooking When it is detected that the cooking container has been removed, the determination of the cooking state determination sequence and the determination of the validity of the burn detection by the burn detection unit are initialized, the determination by the cooking state determination sequence is performed again, and the burn detection is performed. The induction heating cooker according to claim 1, wherein valid / invalid determination of scoring detection by the unit is performed . 前記焦げ付き検知部による焦げ付き検知が有効な場合は、前記赤外線センサの出力電圧が前記第１の出力電圧値よりも大きい第２の出力電圧値に達すると、前記焦げ付き検知部は調理容器の底に調理物が焦げ付いたと判定し、前記調理容器検知部による調理容器の有無判定を行わないことを特徴とする請求項２に記載の誘導加熱調理器。 When scoring detection by the scoring detection unit is effective, when the output voltage of the infrared sensor reaches a second output voltage value that is larger than the first output voltage value, the scoring detection unit is placed on the bottom of the cooking container. The induction heating cooker according to claim 2, wherein it is determined that the cooked product has been burnt and the presence or absence of the cooking container is not determined by the cooking container detection unit. 前記制御部は、調理開始後に前記インバータに入力される電力を積算する電力積算手段を備え、調理状態判別シーケンスは前記電力積算手段による電力積算値が第１の電力積算値に至るまでに、前記赤外線センサの出力電圧値が第３の出力電圧値に到達しない場合には、前記焦げ付き検知部による焦げ付き検知を有効とする一方、前記赤外線センサの出力電圧値が第３の出力電圧値に到達した場合には、前記焦げ付き検知部による焦げ付き検知を無効とし、その後、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うことを特徴とする請求項１に記載の誘導加熱調理器。 The control unit includes a power integration unit that integrates the electric power input to the inverter after the start of cooking, and the cooking state determination sequence is performed until the power integration value by the power integration unit reaches the first power integration value. When the output voltage value of the infrared sensor does not reach the third output voltage value, the burn detection by the burn detection unit is enabled, while the output voltage value of the infrared sensor reaches the third output voltage value. In this case, when the burn detection by the burn detection unit is invalidated and then the cooking container detection unit detects that the cooking container has been removed during cooking, the determination of the cooking state determination sequence and the burn detection unit initialize the judge the validity scorching detection, again, it is determined by the cooking state determination sequence, burnt by the burnt-detecting section Induction heating cooker according to claim 1, characterized in that the judge the validity can detect. 前記制御部は、加熱開始からの経過時間を計測する計時手段を備え、前記調理状態判別シーケンスは、前記計時手段により計測した時間が、第１の設定時間に到達するまでの間に、前記赤外線センサの出力電圧が第４の出力電圧値に到達しない場合には、前記焦げ付き検知部による焦げ付き検知を有効とする一方、前記赤外線センサの出力電圧が第４の出力電圧値に到達した場合には、前記焦げ付き検知部による焦げ付き検知を無効とし、その後、調理中に前記調理容器検知部により調理容器が取り除かれたことを検知すると、前記調理状態判別シーケンスの判定及び前記焦げ付き検知部による焦げ付き検知の有効無効判定を初期化し、再度、前記調理状態判別シーケンスによる判定を行い、前記焦げ付き検知部による焦げ付き検知の有効無効判定を行うことを特徴とする請求項１に記載の誘導加熱調理器。 The control unit includes a time measuring unit that measures an elapsed time from the start of heating, and the cooking state determination sequence includes the infrared ray until the time measured by the time measuring unit reaches a first set time. When the output voltage of the sensor does not reach the fourth output voltage value, the burn detection by the burn detection unit is enabled, whereas when the output voltage of the infrared sensor reaches the fourth output voltage value When the burn detection by the burn detection unit is invalidated and then the cooking container detection unit detects that the cooking container has been removed during cooking, the determination of the cooking state determination sequence and the burn detection by the burn detection unit are performed. the valid invalid determination initialized again, a determination by the cooking state determination sequence, Mu effective detection scorching by the scorching detection portion Induction heating cooker according to claim 1, characterized in that a determination.
JP2012519245A 2010-06-07 2011-06-07 Induction heating cooker Active JP5887516B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2012519245A JP5887516B2 (en) 2010-06-07 2011-06-07 Induction heating cooker

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP2010129756 2010-06-07
JP2010129756 2010-06-07
PCT/JP2011/003197 WO2011155180A1 (en) 2010-06-07 2011-06-07 Induction cooker
JP2012519245A JP5887516B2 (en) 2010-06-07 2011-06-07 Induction heating cooker

Publications (2)

Publication Number Publication Date
JPWO2011155180A1 JPWO2011155180A1 (en) 2013-08-01
JP5887516B2 true JP5887516B2 (en) 2016-03-16

Family

ID=45097796

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2012519245A Active JP5887516B2 (en) 2010-06-07 2011-06-07 Induction heating cooker

Country Status (2)

Country Link
JP (1) JP5887516B2 (en)
WO (1) WO2011155180A1 (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP6355494B2 (en) * 2014-09-09 2018-07-11 株式会社ハーマン grill

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10149875A (en) * 1996-11-21 1998-06-02 Matsushita Electric Ind Co Ltd Induction-heated cooking device
JP2003004237A (en) * 2001-06-20 2003-01-08 Rinnai Corp Heating and cooking device
JP2007299707A (en) * 2006-05-08 2007-11-15 Matsushita Electric Ind Co Ltd Induction heating cooker
JP2008041471A (en) * 2006-08-08 2008-02-21 Matsushita Electric Ind Co Ltd Induction heating device
JP2009218140A (en) * 2008-03-12 2009-09-24 Panasonic Corp Induction heating cooking appliance

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP3353547B2 (en) * 1995-06-22 2002-12-03 松下電器産業株式会社 Cooking device

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH10149875A (en) * 1996-11-21 1998-06-02 Matsushita Electric Ind Co Ltd Induction-heated cooking device
JP2003004237A (en) * 2001-06-20 2003-01-08 Rinnai Corp Heating and cooking device
JP2007299707A (en) * 2006-05-08 2007-11-15 Matsushita Electric Ind Co Ltd Induction heating cooker
JP2008041471A (en) * 2006-08-08 2008-02-21 Matsushita Electric Ind Co Ltd Induction heating device
JP2009218140A (en) * 2008-03-12 2009-09-24 Panasonic Corp Induction heating cooking appliance

Also Published As

Publication number Publication date
JPWO2011155180A1 (en) 2013-08-01
WO2011155180A1 (en) 2011-12-15

Similar Documents

Publication Publication Date Title
US7102109B2 (en) Induction cooking heater
JP2006331910A (en) Induction heating cooking device
JP5262544B2 (en) Induction heating cooker
JP2012247074A (en) Heating cooker
JP4311413B2 (en) Induction heating device
JP2007050164A (en) Rice cooker
JP5272612B2 (en) Induction heating cooker
JP5887516B2 (en) Induction heating cooker
JP4497196B2 (en) Induction heating cooker
JP5218287B2 (en) Induction heating cooker
JP5264838B2 (en) Cooker
KR20110096201A (en) Cooker capable of controlling the cooking temperature automatically and the controlling method for the same
JP5592410B2 (en) Induction heating cooker and control method thereof
JP2008226568A (en) Induction heating cooker
JP2005150013A (en) Induction heating cooker
JP2008060088A5 (en)
JP2012014839A (en) Heating cooker
JP2006078079A (en) Cooking device and program
JP2005310384A (en) Induction heating cooker
JP2009176553A (en) Induction heating cooker
JP5690996B2 (en) Induction heating cooker
JP4301203B2 (en) Cooker
JP5082877B2 (en) Induction heating cooker
KR20240030925A (en) Induction heating device and control method of induction heating device
JP6114907B2 (en) High frequency heating device

Legal Events

Date Code Title Description
A621 Written request for application examination

Free format text: JAPANESE INTERMEDIATE CODE: A621

Effective date: 20140509

A711 Notification of change in applicant

Free format text: JAPANESE INTERMEDIATE CODE: A711

Effective date: 20141008

RD03 Notification of appointment of power of attorney

Free format text: JAPANESE INTERMEDIATE CODE: A7423

Effective date: 20141014

A131 Notification of reasons for refusal

Free format text: JAPANESE INTERMEDIATE CODE: A131

Effective date: 20150423

A521 Written amendment

Free format text: JAPANESE INTERMEDIATE CODE: A523

Effective date: 20150619

TRDD Decision of grant or rejection written
A01 Written decision to grant a patent or to grant a registration (utility model)

Free format text: JAPANESE INTERMEDIATE CODE: A01

Effective date: 20151013

A61 First payment of annual fees (during grant procedure)

Free format text: JAPANESE INTERMEDIATE CODE: A61

Effective date: 20151021

R151 Written notification of patent or utility model registration

Ref document number: 5887516

Country of ref document: JP

Free format text: JAPANESE INTERMEDIATE CODE: R151