JP3736477B2 - Induction heating cooker - Google Patents

Induction heating cooker Download PDF

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Publication number
JP3736477B2
JP3736477B2 JP2002056968A JP2002056968A JP3736477B2 JP 3736477 B2 JP3736477 B2 JP 3736477B2 JP 2002056968 A JP2002056968 A JP 2002056968A JP 2002056968 A JP2002056968 A JP 2002056968A JP 3736477 B2 JP3736477 B2 JP 3736477B2
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Japan
Prior art keywords
light
top plate
light emitting
heated
induction heating
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JP2002056968A
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JP2003257601A (en
Inventor
徹也 鍜治
清義 高田
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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    • HELECTRICITY
    • H05ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
    • H05BELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
    • H05B6/00Heating by electric, magnetic or electromagnetic fields
    • H05B6/02Induction heating
    • H05B6/10Induction heating apparatus, other than furnaces, for specific applications
    • H05B6/12Cooking devices
    • H05B6/1209Cooking devices induction cooking plates or the like and devices to be used in combination with them
    • H05B6/1218Cooking devices induction cooking plates or the like and devices to be used in combination with them with arrangements using lights for heating zone state indication

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

Description

【0001】
【発明の属する技術分野】
本発明は、発光手段によりトッププレートの上面に光による模様を描く構成を有する誘導加熱調理器に関する。
【0002】
【従来の技術】
誘導加熱調理器は加熱コイルに高周波電流を流し、高周波磁界を発生させ、加熱コイルと磁気結合している鍋(負荷)に渦電流によるジュール熱を発生させ、鍋自体を発熱させて調理を行う調理器である。そのため炎が見えるガス調理器や加熱部が赤熱する電気ヒータと違い加熱部を視覚的に捉えることが出来ないという問題があった。
【0003】
この課題を解決するために、例えば、特開2001―160483号公報に記載されているようなものがあった。図9は、前記公報に記載された従来の誘導加熱調理器の断面を示すものである。図9において、1は外郭を構成する本体であり、2は本体の上部に設けたトッププレートである。3はトッププレート2に載置された鍋などの被加熱物であり誘導加熱により発熱し内部に収納した調理物を加熱する。4はトッププレート2の下部に設けられた被加熱物を誘導加熱する加熱コイルである。
【0004】
また、5は発光手段であり光源6と導光体7とより構成され、発光面8よりトッププレート2に向かって光を放射する。9は加熱コイルや発光手段を制御する制御手段である。
【0005】
前記構成において加熱コイルが通電されると被加熱物は誘導加熱により加熱される。それと同時に、光源6が点灯し、その光は導光体7を導光し発光面8より発光しトッププレート2を照射する。これによりトッププレート2の面上には図10に示すような円環状の模様が描かれ、加熱部を視覚的に捉える事ができるというものであった。
【0006】
【発明が解決しようとする課題】
近年食生活の向上に伴い、誘導加熱調理器においても被加熱物として鉄鍋から、軽くて高級感のあるステンレス系の鍋が用いられるようになり、調理時の雰囲気が重要視されるようになってきた。しかしながら、前記従来の構成では、加熱部を視覚的に捉える事ができるが平面的なものであり、調理時においても、もっとゆとりを感じられるような調理器が望まれていた。
【0007】
本発明は、前記従来の課題を解決するもので、トッププレートに被加熱物を載置したとき、トッププレートと被加熱物とで光による模様を立体的に描くことができる誘導加熱調理器を提供することを目的とする。
【0008】
【課題を解決するための手段】
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外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有し半透明の膜を裏面に設けたトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた導光体を有する発光手段と、前記膜の前記発光手段に対応する位置の少なくとも一部に前記導光体の発光面と交叉するか又は前記導光体の外側に位置するように光の透過率の高いスリットを設けることにより光の透過率の異なる部位を交互に設け、前記スリットを透過した光が前記被加熱物の外表面に炎状の模様を形成する構成とした。この構成により、被加熱物が炭火またはガスの炎の中に載置されたようなイメージを与え、ほのぼのとした感じを与える事ができる。
【0009】
【発明の実施の形態】
請求項に記載の発明は、外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有し半透明の膜を裏面に設けたトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた導光体を有する発光手段とを備え、前記の前記発光手段に対応する位置の少なくとも一部に前記導光体の発光面と交叉するか又は前記導光体の外側に位置するように光の透過率の高いスリットを設けることにより光の透過率の異なる部位を交互に設け、前記スリットを透過した光が前記被加熱物の外表面に炎状の模様を形成する構成とした。この構成により、被加熱物の側面底部に光の明暗により、炎のような模様が形成され、使用者にゆとり感を持たせることができる。
【0010】
請求項に記載の発明は、特に請求項に記載のトッププレートの光の透過率の異なる部位を透光性の膜の有無よりなる構成としたので、簡単な構成で明暗の異なる部位をつくることができる。
【0011】
請求項に記載の発明は、特に、請求項からに記載の構成において、光の透過率の高い方の部位を発光体の外周方向に向かって放射状に、矩形または細長い花弁状、あるいはこれらに準じた形状にする構成としたので、被加熱物の側面に細長いはっきりとした炎の模様を描くことができる。また、さらに炎の高さの高い模様を作り上げることができる。
【0012】
請求項に記載の発明は、外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有し半透明の膜を裏面に設けたトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた発光手段とを備え、前記トッププレートの下面の前記発光手段の発光面に対応する位置に沿って少なくとも一部に光の透過率の高い凹部を非連続的に設け、前記凹部に入射した光が前記被加熱物の外表面に炎状の模様を形成する構成とした。この構成により、被加熱物の側面底部に光の明暗により、炎のような模様が形成され、使用者にゆとり感を持たせることができる。
【0013】
請求項に記載の発明は、特に、請求項のいずれか1項に記載の構成において、発光手段の発光色の明暗を経時的に変える構成としたので、揺らぎを有する模様を描くことができる。
【0014】
請求項に記載の発明は、特に、請求項のいずれか1項に記載の構成において、発光手段の発光巾を経時的に変える構成としたので、揺らぎを有する模様を描くことができる。
【0015】
請求項に記載の発明は、外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有するトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた発光手段とを備え、前記トッププレートの下面の前記発光手段に対応する位置の少なくとも一部に光の透過率の異なる部位を交互に設けるとともに、前記発光手段は光源と導光体とからなり、前記光源と前記導光体との位置関係を経時的に変える構成としたので、揺らぎを有する模様を描くことができる。
【0016】
請求項に記載の発明は、外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有するトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた発光手段とを備え、前記トッププレートの下面の前記発光手段に対応する位置の少なくとも一部に光の透過率の異なる部位を交互に設けるとともに、前記発光手段の発光面とトッププレートとの位置関係を経時的変える構成としたので、揺らぎを有する模様を描くことができる。
【0017】
【実施例】
以下、本発明の実施例について、図面を参照しながら説明する。
【0018】
(実施例1)
図1(a)は本発明の実施例1における誘導加熱調理器のトッププレートの断面図、図1(b)はトッププレートの要部裏面図であり、図2は本発明の実施例1における誘導加熱調理器の外観斜視図、図3同誘導加熱調理器の要部側面断面図、図4は円環状の発光手段である。また、図5はトッププレート上に被加熱物を載置した状態の模式図である。
【0019】
図2において、11は外郭を構成する本体であり、12は本体11の上面に設けたトッププレートであり、13及び14は被加熱物を誘導加熱する誘導加熱部、15はヒータ加熱するラジエント加熱部である。
【0020】
また、16はロースタ部、17は操作部である。図3は誘導加熱調理器の要部側面断面図で、誘導加熱部13または14のどちらか一方を示したものであるが、本実施例では誘導加熱部13に対応したものとして説明する。図において、トッププレート12の上面の誘導加熱部13に被加熱物である鍋18が載置され、トッププレート12の下部には誘導加熱部13に対応して加熱コイル19が設けられている。そして、加熱コイル19の周囲には図4に示す円環状の発光手段20が設けられている。この発光手段20は光源21と発光面23を有する導光体22より構成されている。なお、24は制御部である。
【0021】
前記構成において加熱コイル19が通電されると被加熱物である鍋18は誘導加熱により加熱される。それと同時に、光源21が点灯し、その光は導光体22を導光し順次発光面23より発光しトッププレート12を照射する。これによりトッププレート12の面上に光による模様が描かれる。
【0022】
次に、本実施例の特徴であるトッププレート12の構成について説明する。
【0023】
図1において、トッププレート12は透光性の耐熱ガラス25の裏面に印刷により半透明の膜26を設けた構成になっている。これは外部から本体11の内部が見えないようにするためである。本実施例の特徴はこのような構成のトッププレート12において、発光手段20に対応する位置の少なくとも一部に光の透過率の異なる部位を交互に設ける構成とした点である。具体的には図1(a)に示すように膜26の発光手段20の発光面23に対応する部分にスリット27を設けた点である。このスリット27の設け方は印刷時に膜を設けない部分として膜26と同時に設けるか、膜26を作製後エッチングなどの手段によりスリット部の膜を除去して設けるかなどの方法により得ることができる。
【0024】
スリット27を設けた位置は光が良く通るので明るく、スリット27のない位置は光が通り難いため相対的に暗くなる。このとき、図1(b)に示すようにスリット27を細長い花弁状とし、この花弁が点線で示した導光体22の発光面23と交叉するようにする。特に、導光体22が円環状の場合は花弁の方向を半径方向に向け交叉するようにすると全体のバランスがよく花びらのような模様が得られる。
【0025】
このように構成したトッププレート12上に鍋18として円形の鍋を載置し、調理をしたときの状態を図5に示す。本実施例では円環状の発光手段20を用いているため、トッププレート12上に円形の模様が描かれ加熱部13の範囲が明示される。
【0026】
さらに、半透明の膜26の中に光透過率の高い花弁状のスリット27が導光体22の発光面23と交叉して全周に多数設けられているため、トッププレート12上には円形の模様に重ねて花弁が載置されたような模様となる。この模様は花弁状のスリット27の部分は光の透過率が高いため明るく、スリット27とスリット27との間は光の透過率が比較的低いため暗くなる。したがって、円環状に沿って明暗が交互に現れる模様となる。このような模様が描かれるトッププレート12上に円形の鍋18が載置されると、スリット27の先端部を透過した光は鍋18の外表面に達し、ここで反射されるが、スリット27間の円環状部に対応する位置から放射された光は鍋18に到達しないかまたは到達しても光が弱いため認識されにくい。このため、鍋18の外表面にはスリットを透過した光により鍋の外表面に炎状の模様が形成され、鍋18があたかも炎の中に載置されたようなイメージを与える事ができる。このようなイメージは鉄系の鍋よりも、反射率の高いステンレス系の鍋、またはアルミニウム系の鍋などの方がより鮮明になる。
【0027】
なお、本実施例では光の透過率の異なる部位を設ける方法は前記方法以外に、二重の印刷膜により設ける方法がある。このとき、最初は透過率の高い膜で全体を印刷し、次いで、透過率があまり高くない膜をスリット部以外に設ける方法である。この場合、最初の膜は赤色光をよく透過する膜にするとより鮮明な赤色が鍋を照射するのでさらに炎の感じをよくすることができる。もちろん、この場合の印刷膜の形成はどちらを先にしても問題はない。
【0028】
また、耐熱ガラスを赤色ガラスにしても同様に炎の感じをよくすることができる。
【0029】
また、耐熱ガラスに設ける膜は、印刷以外に塗装や、耐熱性のフイルムを貼り付ける方法等の本実施例の主旨にそうものであれば良い。
【0030】
また、本実施例ではスリットの形状とした花弁状の形状について説明したが、この形状に限定されるものでなく、本発明の主旨に合う形状であればどのような形状であってもよい。特に細長い矩形状とし、その先端が次第に細くなる形状、または半円の形状、すなわち花弁に準じた形状とすると炎の感じが良く表現されるようになる。
【0031】
また、本実施例ではトッププレート上にスリットが円環状の導光体と交叉するような図形を描くように設けた場合を説明したが、通常鍋に照射される光は導光体の外側のスリット部を透過した光によるものである。したがって、スリットに対応する導光体の外側にだけ設けるようにしてもよい。このようにすることにより透過光の強度を強くできる。ただしこの場合、鍋の大きさが小さく、円環状の導光体のかなり内側に載置されるような場合は本実施例の効果は得られず、むしろ本実施例で示したスリットに対応する導光体の両側に設ける方が好ましい。
【0032】
また、スリットの巾及び長さは特に規制されるものではなく、夫々の機種に応じて実験結果を参照して設計により定めればよい。
【0033】
また、本実施例では、スリットを円環状の、すなわち加熱部の全周にわたって設けた場合を説明したがこれに限定されるものでなく、円環状の一部すなわち使用者が良く見る部分だけであっても良いのは勿論である。
【0034】
また、円環状にスリットを配置する場合について説明したが、機種によってはこの形状に規制される事なく導光体の形状に応じて、例えば四角形等であっても良い。
【0035】
(実施例2)
図6は本発明の実施例2における誘導加熱調理器のトッププレートの要部裏面図である。なお、本実施例の基本構成は実施例1と同じであるので、その説明は省略し異なる点を中心に説明する。また、実施例1と同一構成には同一符号を付しその説明は省略する。
【0036】
本実施例では図6に示すように、トッププレート12の裏面の導光体22に対応する部分に凹部28を設け、かつ凹部28には印刷などによる膜26を設けないようにし、凹部の光透過率を高くしたことを特徴としている。この構成では、発光面23より放射された光が凹部28に入射すると、入射した光の放射方向が凸部から放射する形になるので、放射光束は拡がりをもつようになる。勿論このような関係になるように導光体22と凹部28との距離を決める必要がある。このように構成されたトッププレート12に鍋18を載置すると、凹部を透過した光は明るく、かつ拡がりを持っているので鍋18の壁面に上部に行くにしたがって幅広くかつ、ぼやっとした炎状の模様を描く。したがって、鍋18が炎の中に載置しているような感じが得られる。
【0037】
なお、凹部の形状は光が加熱部の半径方向に拡がるような形状にするのが好ましい。
【0038】
また、前記説明ではトッププレートの裏面に凹部を設けた場合を示したが、逆にトッププレートの表面の導光体に対応する位置に凸部を設けても同様な効果が得られる。ただしこの場合、表面に凸部があるため鍋をトッププレート上で移動し難くなるが、逆に鍋を適正な加熱部内に載置しやすくなり、またトッププレート自体に傷がつきにくくなるという利点もある。
【0039】
(実施例3)
図7は本発明の実施例3における誘導加熱調理器の要部断面図である。なお、本実施例の基本構成は実施例1または2と同じであるので、その説明は省略し異なる点を中心に説明する。また、実施例1と同一構成には同一符号を付しその説明は省略する。
【0040】
本実施例では図7に示すように、導光体22の発光面23に凸部29と平坦部30とを交互に設けたことを特徴としている。そして凸部29に対応するトッププレート12の裏面には膜26を設けない構成とした。この構成により、トッププレート12から放射される凸部29に対応する光は明るく、かつ拡がりをもっているので、実施例2で記載したと同様な効果が得られる。
【0041】
(実施例4)
本実施例では実施例1〜3で得られた炎に揺らぎ感を持たせる構成について述べる。なお、本実施例の基本構成は実施例1ないし3と同じであるので、その説明は省略し異なる点を中心に説明する。
【0042】
また、説明を分かり易くするために実施例1と同一構成には同一符号を用いその説明は省略する。
【0043】
発光手段20の光源21の電圧または電流を変化させ、光出力を経時的に変えるようにする。これにより鍋18に照射される光の明暗が変化し、いっそう鍋18が炎の中に置かれているような感じを与えることができる。
【0044】
また、夫々独立して光源21を有する導光体22を複数本並列に設け、これらの導光体22を経時的に選択し発光させることにより、発光手段20の発光幅を変えるようにする。これにより鍋18に照射される光の面積の大きさ、すなわち、炎の大きさが変化し、一層鍋18が炎の中に置かれているような感じを与えることができる。さらに、先述したように光源21の出力を変えるようにするとさらに効果的である。
【0045】
また、図8に示すように、光源21と導光体22との位置関係を変えるようにするとよい。例えば、光源21に移動手段を設け、図8に示す矢印方向に移動させるようにする。これにより、光源21と導光体22との位置関係が変わり、導光体22に入力される光の量が変わる。したがって、鍋18の壁面に放射される光の量が変わり、鍋18が炎の中に置かれているような感じを与えることができる。さらに、先述したように光源21の出力を変えたり、巾を変えたりするようにするとさらに効果的である。
【0046】
また、導光体22に移動手段を設け、発光面23とトッププレート12との位置関係が変わるようにしても良い。この場合の位置関係は発光面23とトッププレート12との距離、または左右及び前後の位置を変えるようにしても良い。これにより、鍋18の壁面の模様が揺らいで見えるようにすることができる。
【0047】
なお、実施例1〜4において誘導加熱調理器として加熱部が3箇所あるものについて述べたが、勿論これに限定されるものではない。
【0048】
また、実施例1〜4において導光体の発光面にフィルタなどを設け、発光面から放射する光の量が各部位ごとに交互に異なる構成にしてもよい。
【0049】
【発明の効果】
以上のように、請求項1〜に記載の発明によれば、トッププレートに被加熱物を載置したとき、トッププレートと被加熱物とで光による模様を立体的に描くことができ、使用者にゆとり感を与える事ができる。
【図面の簡単な説明】
【図1】 (a)本発明の実施例1における誘導加熱調理器のトッププレートの断面図
(b)同誘導加熱調理器のトッププレートの要部裏面図
【図2】 本発明の実施例1における誘導加熱調理器の外観斜視図
【図3】 同誘導加熱調理器の要部側面断面図
【図4】 円環状の発光手段を示す図
【図5】 本発明の実施例1における誘導加熱調理器のトッププレート上に被加熱物を載置した状態の模式図
【図6】 本発明の実施例2における誘導加熱調理器のトッププレートの要部裏面図
【図7】 本発明の実施例3における誘導加熱調理器の要部断面図
【図8】 本発明の実施例4における誘導加熱調理器の発光手段の要部断面図
【図9】 従来の誘導加熱調理器の側面断面図
【図10】 従来の誘導加熱調理器のトッププレート上に描かれた模様を示す図
【符号の説明】
11 本体
12 トッププレート
18 鍋(被加熱物)
19 加熱コイル
20 発光手段
21 光源
22 導光体(線状発光体)
26 膜
28 凹部
29 凸部
[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an induction heating cooker having a configuration in which a light pattern is drawn on an upper surface of a top plate by light emitting means.
[0002]
[Prior art]
The induction heating cooker applies high-frequency current to the heating coil, generates a high-frequency magnetic field, generates Joule heat due to eddy current in the pan (load) magnetically coupled to the heating coil, and heats the pan itself for cooking. It is a cooker. Therefore, there is a problem that the heating part cannot be visually grasped unlike a gas cooker in which a flame is visible and an electric heater in which the heating part is red hot.
[0003]
In order to solve this problem, for example, there is one described in Japanese Patent Application Laid-Open No. 2001-160483. FIG. 9 shows a cross section of a conventional induction heating cooker described in the publication. In FIG. 9, 1 is a main body constituting the outer shell, and 2 is a top plate provided on the upper portion of the main body. Reference numeral 3 denotes an object to be heated such as a pan placed on the top plate 2, which generates heat by induction heating and heats the food stored inside. Reference numeral 4 denotes a heating coil that induction-heats an object to be heated, which is provided below the top plate 2.
[0004]
Reference numeral 5 denotes a light emitting means, which includes a light source 6 and a light guide 7, and emits light from the light emitting surface 8 toward the top plate 2. Reference numeral 9 denotes control means for controlling the heating coil and the light emitting means.
[0005]
In the above configuration, when the heating coil is energized, the object to be heated is heated by induction heating. At the same time, the light source 6 is turned on, and the light is guided through the light guide 7 and emitted from the light emitting surface 8 to irradiate the top plate 2. As a result, an annular pattern as shown in FIG. 10 is drawn on the surface of the top plate 2 so that the heating portion can be visually grasped.
[0006]
[Problems to be solved by the invention]
With the improvement of eating habits in recent years, light and high-grade stainless steel pans have been used from induction hot pots in induction heating cookers as well, so that the atmosphere during cooking is regarded as important. It has become. However, in the above-described conventional configuration, although the heating unit can be visually grasped, it is a flat one, and there has been a demand for a cooking device that can feel more relaxed even during cooking.
[0007]
The present invention solves the above-mentioned conventional problems, and an induction heating cooker that can draw a three-dimensional pattern with light between the top plate and the object to be heated when the object to be heated is placed on the top plate. The purpose is to provide.
[0008]
[Means for Solving the Problems]
In order to solve the above conventional problems, the induction heating cooker of the present invention is a body constituting an outer shell, a perforated semi-transparent film heating unit for placing an object to be heated provided on the upper surface of the main body rear surface light emitting means having top and plates, and the induction pressure heat heating coil the object to be heated provided below the top plate, a light guide provided in at least part of the outer periphery of the heating coil provided in, Light is provided by providing a slit having a high light transmittance so as to cross the light emitting surface of the light guide or at the outside of the light guide at least at a part of the film corresponding to the light emitting means. provided transmittance of different sites alternately, the light transmitted through the slit is configured that to form a flame-like pattern on the outer surface of the object to be heated. With this configuration, it is possible to give an image as if the object to be heated is placed in a charcoal fire or a gas flame, and to give a warm feeling.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1, the body and the top plate Yu was translucent film heating unit for placing an object to be heated provided on the upper surface of the main body provided on the back surface that constitutes an outer shell, said top A heating coil for inductively heating the object to be heated provided below the plate ; and a light emitting means having a light guide provided on at least a part of the outer periphery of the heating coil, corresponding to the light emitting means of the film By alternately providing slits with high light transmittance so as to cross the light-emitting surface of the light guide or at the outside of the light guide , at least part of the positions where the light guides have different light transmittance to provided, the light transmitted through the slit is configured that to form a flame-like pattern on the outer surface of the object to be heated. With this configuration, a flame-like pattern is formed on the bottom of the side surface of the object to be heated due to the brightness of the light, and the user can have a feeling of comfort.
[0010]
In the second aspect of the invention, the portion of the top plate according to the first aspect having different light transmittance is configured by the presence or absence of a light-transmitting film. Can be made.
[0011]
The invention described in claim 3 is the structure described in claims 1 to 2 , in particular, a portion having a higher light transmittance radially toward the outer circumference of the light emitter, rectangular or elongated petal, or Since the configuration conforms to these, it is possible to draw an elongated and clear flame pattern on the side surface of the object to be heated. In addition, a pattern with a higher flame height can be created.
[0012]
Invention of claim 4, the main body and the top plate Yu was translucent film heating unit for placing an object to be heated provided on the upper surface of the main body provided on the back surface that constitutes an outer shell, said top A heating coil for inductively heating the object to be heated provided below the plate; and a light emitting means provided on at least a part of an outer peripheral portion of the heating coil; and a light emitting surface of the light emitting means on the lower surface of the top plate at least a portion along a position corresponding to the provided high transmittance of light recesses discontinuously, the light incident on the concave portion has a structure that form a flame-like pattern on the outer surface of the object to be heated . With this configuration, a flame-like pattern is formed on the bottom of the side surface of the object to be heated due to the brightness of the light, and the user can have a feeling of comfort.
[0013]
The invention described in claim 5 is the structure described in any one of claims 1 to 4 , in which the light emission color of the light emitting means is changed over time, so that a pattern having fluctuations is drawn. be able to.
[0014]
In the invention according to claim 6 , in particular, in the structure according to any one of claims 1 to 5 , since the light emission width of the light emitting means is changed over time, a pattern having fluctuations can be drawn. it can.
[0015]
The invention according to claim 7 is a main body constituting an outer shell, a top plate having a heating portion for placing an object to be heated provided on an upper surface of the main body, and the object to be heated provided below the top plate. A heating coil for induction heating, and a light emitting means provided on at least a part of the outer peripheral portion of the heating coil, and a light transmittance at least at a part of the lower surface of the top plate corresponding to the light emitting means. Different portions are provided alternately, and the light emitting means is composed of a light source and a light guide, and the positional relationship between the light source and the light guide is changed over time, so that a pattern with fluctuations can be drawn. it can.
[0016]
According to an eighth aspect of the present invention, there is provided a main body constituting an outer shell, a top plate having a heating portion for placing an object to be heated provided on the upper surface of the main body, and the object to be heated provided below the top plate. A heating coil for induction heating, and a light emitting means provided on at least a part of the outer peripheral portion of the heating coil, and a light transmittance at least at a part of the lower surface of the top plate corresponding to the light emitting means. Since different parts are provided alternately and the positional relationship between the light emitting surface of the light emitting means and the top plate is changed over time, a pattern having fluctuations can be drawn.
[0017]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0018]
Example 1
FIG. 1A is a cross-sectional view of a top plate of an induction heating cooker in Embodiment 1 of the present invention, FIG. 1B is a rear view of the main part of the top plate, and FIG. 2 is in Embodiment 1 of the present invention. FIG. 3 is an external perspective view of the induction heating cooker, FIG. 3 is a side sectional view of the main part of the induction heating cooker, and FIG. 4 is an annular light emitting means. FIG. 5 is a schematic view of a state in which an object to be heated is placed on the top plate.
[0019]
In FIG. 2, 11 is a main body constituting the outer shell, 12 is a top plate provided on the upper surface of the main body 11, 13 and 14 are induction heating units for induction heating of an object to be heated, and 15 is radial heating for heater heating. Part.
[0020]
Reference numeral 16 denotes a roaster unit, and 17 denotes an operation unit. FIG. 3 is a side cross-sectional view of the main part of the induction heating cooker, showing either the induction heating unit 13 or 14, but in the present embodiment, it will be described as corresponding to the induction heating unit 13. In the figure, a pan 18 which is an object to be heated is placed on the induction heating unit 13 on the upper surface of the top plate 12, and a heating coil 19 is provided below the top plate 12 corresponding to the induction heating unit 13. An annular light emitting means 20 shown in FIG. 4 is provided around the heating coil 19. The light emitting means 20 includes a light source 22 having a light source 21 and a light emitting surface 23. Reference numeral 24 denotes a control unit.
[0021]
In the above configuration, when the heating coil 19 is energized, the pan 18 that is the object to be heated is heated by induction heating. At the same time, the light source 21 is turned on, and the light is guided through the light guide 22 to emit light sequentially from the light emitting surface 23 to irradiate the top plate 12. As a result, a light pattern is drawn on the surface of the top plate 12.
[0022]
Next, the configuration of the top plate 12 that is a feature of the present embodiment will be described.
[0023]
In FIG. 1, the top plate 12 has a configuration in which a translucent film 26 is provided on the back surface of a translucent heat-resistant glass 25 by printing. This is to prevent the inside of the main body 11 from being seen from the outside. The feature of the present embodiment is that the top plate 12 having such a configuration is configured such that portions having different light transmittances are alternately provided in at least a part of the position corresponding to the light emitting means 20. Specifically, as shown in FIG. 1A, a slit 27 is provided in a portion of the film 26 corresponding to the light emitting surface 23 of the light emitting means 20. The method of providing the slit 27 can be obtained by a method of providing the slit 27 at the same time as the film 26 at the time of printing, or removing the film at the slit portion by means such as etching after the film 26 is manufactured. .
[0024]
The position where the slit 27 is provided is bright because light passes well, and the position where there is no slit 27 is relatively dark because it is difficult for light to pass through. At this time, as shown in FIG. 1B, the slit 27 is formed into an elongated petal shape, and this petal crosses the light emitting surface 23 of the light guide 22 indicated by a dotted line. In particular, when the light guide 22 has an annular shape, the petal-like pattern can be obtained with good overall balance by crossing the petals in the radial direction.
[0025]
FIG. 5 shows a state where a circular pan is placed as the pan 18 on the top plate 12 configured as described above and cooked. In this embodiment, since the annular light emitting means 20 is used, a circular pattern is drawn on the top plate 12 to clearly indicate the range of the heating unit 13.
[0026]
Furthermore, a large number of petal-like slits 27 having a high light transmittance intersect with the light emitting surface 23 of the light guide 22 in the translucent film 26, so that a circular shape is formed on the top plate 12. It looks like a petal is placed on top of the pattern. The pattern of the petal-shaped slit 27 is bright because the light transmittance is high, and the portion between the slit 27 and the slit 27 is dark because the light transmittance is relatively low. Therefore, it becomes a pattern where light and dark appear alternately along the annular shape. When the circular pan 18 is placed on the top plate 12 on which such a pattern is drawn, the light transmitted through the tip of the slit 27 reaches the outer surface of the pan 18 and is reflected there. The light emitted from the position corresponding to the annular portion between them does not reach the pan 18 or is difficult to be recognized because the light is weak even if it reaches. Therefore, the outer surface of the pan 18 are made flame-like pattern shape on the outer surface of the pot by the light transmitted through the slits, it is possible to provide an image such as a pot 18 is as if placed in a flame . Such an image is clearer with a highly reflective stainless steel pan or aluminum pan than an iron pan.
[0027]
In this embodiment, a method of providing a portion having a different light transmittance includes a method of providing a double printed film in addition to the above method. At this time, the whole is first printed with a film having a high transmittance, and then a film having a very low transmittance is provided in addition to the slit portion. In this case, if the first film is a film that transmits red light well, a brighter red color irradiates the pan, so the feeling of flame can be further improved. Of course, there is no problem with the formation of the printed film in this case, whichever comes first.
[0028]
Moreover, even if the heat resistant glass is red glass, the feeling of flame can be improved.
[0029]
Moreover, the film | membrane provided in heat resistant glass should just be so in the main point of this Example, such as the method of applying a coating or heat resistant film besides printing.
[0030]
In the present embodiment, the petal-like shape as the slit shape has been described. However, the present invention is not limited to this shape, and any shape may be used as long as it meets the gist of the present invention. In particular, when the shape is a long and narrow rectangle and the tip gradually becomes thinner, or the shape of a semicircle, that is, a shape according to a petal, the feeling of flame is well expressed.
[0031]
Further, in this embodiment, the case where the slit is provided on the top plate so as to draw a figure that intersects with the annular light guide is explained. This is due to light transmitted through the slit. Therefore, it may be provided only outside the light guide corresponding to the slit. By doing so, the intensity of transmitted light can be increased. However, in this case, the effect of the present embodiment cannot be obtained when the pan is small and placed on the inner side of the annular light guide, rather, it corresponds to the slit shown in the present embodiment. It is preferable to provide it on both sides of the light guide.
[0032]
In addition, the width and length of the slit are not particularly limited, and may be determined by design with reference to experimental results according to each model.
[0033]
Further, in the present embodiment, the case where the slit is formed in an annular shape, that is, over the entire circumference of the heating unit has been described, but the present invention is not limited to this, and only a part of the annular shape, that is, a portion that the user often sees. Of course, there may be.
[0034]
Moreover, although the case where a slit is arrange | positioned circularly was demonstrated, depending on the model, according to the shape of a light guide, for example, a rectangle etc. may be sufficient without being controlled by this shape.
[0035]
(Example 2)
FIG. 6 is a back view of the main part of the top plate of the induction heating cooker in Embodiment 2 of the present invention. Since the basic configuration of the present embodiment is the same as that of the first embodiment, the description thereof will be omitted and the description will focus on the different points. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0036]
In this embodiment, as shown in FIG. 6, a concave portion 28 is provided in a portion corresponding to the light guide 22 on the back surface of the top plate 12, and a film 26 by printing or the like is not provided in the concave portion 28. It is characterized by high transmittance. In this configuration, when the light emitted from the light emitting surface 23 enters the concave portion 28, the radiation direction of the incident light is emitted from the convex portion, so that the radiated light flux has a spread. Of course, it is necessary to determine the distance between the light guide 22 and the recess 28 so as to have such a relationship. When the pan 18 is placed on the top plate 12 configured in this way, the light transmitted through the recess is bright and has a spread, so that the width of the pan 18 increases toward the upper portion of the pan 18 and becomes a flame-like flame. Draw a pattern. Therefore, the feeling that the pan 18 is placed in the flame is obtained.
[0037]
In addition, it is preferable that the shape of the concave portion is such that light spreads in the radial direction of the heating portion.
[0038]
Moreover, although the case where the recessed part was provided in the back surface of the top plate was shown in the said description, the same effect is acquired even if it provides a convex part in the position corresponding to the light guide on the surface of a top plate conversely. However, in this case, it is difficult to move the pan on the top plate because there is a convex part on the surface, but on the contrary, it becomes easier to place the pan in the appropriate heating part, and the top plate itself is less likely to be damaged. There is also.
[0039]
Example 3
FIG. 7: is principal part sectional drawing of the induction heating cooking appliance in Example 3 of this invention. Since the basic configuration of the present embodiment is the same as that of the first or second embodiment, the description thereof will be omitted and different points will be mainly described. The same components as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0040]
As shown in FIG. 7, the present embodiment is characterized in that convex portions 29 and flat portions 30 are provided alternately on the light emitting surface 23 of the light guide 22. The film 26 is not provided on the back surface of the top plate 12 corresponding to the protrusions 29. With this configuration, the light corresponding to the convex portion 29 radiated from the top plate 12 is bright and spreads, so that the same effect as described in the second embodiment can be obtained.
[0041]
(Example 4)
In this embodiment, a configuration for giving a feeling of fluctuation to the flames obtained in Embodiments 1 to 3 will be described. Since the basic configuration of the present embodiment is the same as that of the first to third embodiments, the description thereof will be omitted and the description will focus on different points.
[0042]
In order to make the description easy to understand, the same reference numerals are used for the same components as those in the first embodiment, and the description thereof is omitted.
[0043]
The voltage or current of the light source 21 of the light emitting means 20 is changed to change the light output with time. Thereby, the brightness of the light irradiated to the pan 18 changes, and it is possible to give a feeling that the pan 18 is placed in the flame.
[0044]
Also, a plurality of light guides 22 each having a light source 21 are provided in parallel, and the light emission width of the light emitting means 20 is changed by selecting these light guides 22 over time and causing them to emit light. Thereby, the magnitude | size of the area of the light irradiated to the pan 18, ie, the magnitude | size of a flame, changes, and can give the feeling that the pan 18 is further placed in the flame. Furthermore, it is more effective to change the output of the light source 21 as described above.
[0045]
In addition, as shown in FIG. 8, the positional relationship between the light source 21 and the light guide 22 may be changed. For example, the light source 21 is provided with a moving means and moved in the direction of the arrow shown in FIG. Thereby, the positional relationship between the light source 21 and the light guide 22 changes, and the amount of light input to the light guide 22 changes. Therefore, the amount of light radiated to the wall surface of the pan 18 changes, and it is possible to give the feeling that the pan 18 is placed in the flame. Further, as described above, it is more effective to change the output of the light source 21 or to change the width.
[0046]
Further, a moving means may be provided in the light guide 22 so that the positional relationship between the light emitting surface 23 and the top plate 12 may be changed. In this case, the positional relationship may be such that the distance between the light emitting surface 23 and the top plate 12, or the left and right and front and rear positions are changed. Thereby, the pattern of the wall surface of the pan 18 can be seen swinging.
[0047]
In addition, in Examples 1-4, although the thing with three heating parts was described as an induction heating cooking appliance, of course, it is not limited to this.
[0048]
Moreover, in Examples 1-4, a filter etc. may be provided in the light emission surface of a light guide, and you may make it the structure from which the quantity of the light radiated | emitted from a light emission surface changes alternately for every site | part.
[0049]
【The invention's effect】
As described above, according to the inventions described in claims 1 to 8 , when an object to be heated is placed on the top plate, a pattern by light can be drawn in three dimensions with the top plate and the object to be heated. A sense of space can be given to the user.
[Brief description of the drawings]
1A is a cross-sectional view of a top plate of an induction heating cooker in Embodiment 1 of the present invention. FIG. 1B is a rear view of a main part of the top plate of the induction heating cooker. FIG. FIG. 3 is a side sectional view of the main part of the induction heating cooker. FIG. 4 is a diagram showing an annular light emitting means. FIG. 5 is an induction heating cook in Example 1 of the present invention. Fig. 6 is a schematic view of a state in which an object to be heated is placed on the top plate of the cooker. FIG. 8 is a cross-sectional view of main parts of the light emitting means of the induction heating cooker in Example 4 of the present invention. FIG. 9 is a side cross-sectional view of a conventional induction heating cooker. ] Shows the pattern drawn on the top plate of a conventional induction cooker Figure [Description of the code]
11 Body 12 Top plate 18 Pan (to be heated)
19 Heating coil 20 Light emitting means 21 Light source 22 Light guide (linear light emitter)
26 Film 28 Concave part 29 Convex part

Claims (8)

外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有し半透明の膜を裏面に設けたトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた導光体を有する発光手段とを備え、前記の前記発光手段に対応する位置の少なくとも一部に前記導光体の発光面と交叉するか又は前記導光体の外側に位置するように光の透過率の高いスリットを設けることにより光の透過率の異なる部位を交互に設け、前記スリットを透過した光が前記被加熱物の外表面に炎状の模様を形成する構成とした誘導加熱調理器。A body constituting an outer shell, a top plate Yu was translucent film heating unit for placing an object to be heated is provided on the back surface provided on an upper surface of the main body, the heated provided below the top plate a heating coil for induction heating an object, and a light emitting unit having a light guide provided in at least part of the outer periphery of the heating coil, the electrically to at least a portion of the position corresponding to the light emitting means of said film Light that has crossed the light emitting surface of the light body or provided slits having high light transmittance so as to be located outside the light guide, thereby alternately providing portions having different light transmittances , and transmitting the light through the slits. There induction heating cooker has a configuration that form a flame-like pattern on the outer surface of the object to be heated. トッププレートの光の透過率の異なる部位は透光性の膜の有無よりなる構成とした請求項に記載の誘導加熱調理器。The induction heating cooker according to claim 1 , wherein the portions of the top plate having different light transmittances are configured by the presence or absence of a light-transmitting film. 光の透過率の高い方の部位を発光体の外周方向に向かって放射状に、矩形または細長い花弁状、あるいはこれらに準じた形状にする構成とした請求項1または2に記載の誘導加熱調理器。The induction heating cooker according to claim 1 or 2 , wherein a portion having a higher light transmittance is configured to be radially or rectangularly or elongated in the outer peripheral direction of the light emitter, or a shape conforming thereto. . 外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有し半透明の膜を裏面に設けたトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた発光手段とを備え、前記トッププレートの下面の前記発光手段の発光面に対応する位置に沿って少なくとも一部に光の透過率の高い凹部を非連続的に設け、前記凹部に入射した光が前記被加熱物の外表面に炎状の模様を形成する構成とした誘導加熱調理器。A body constituting an outer shell, a top plate Yu was translucent film heating unit for placing an object to be heated is provided on the back surface provided on an upper surface of the main body, the heated provided below the top plate A heating coil for inductively heating an object, and a light emitting means provided on at least a part of an outer peripheral portion of the heating coil, and at least a part along a position corresponding to the light emitting surface of the light emitting means on the lower surface of the top plate induction heating cooker recess high transmittance of light discontinuously provided, light incident on the concave portion has a structure that form a flame-like pattern on the outer surface of the object to be heated to. 発光手段の発光色の明暗を経時的に変化させる構成とした請求項のいずれか1項に記載の誘導加熱調理器。The induction heating cooker according to any one of claims 1 to 4 , wherein the light emitting color of the light emitting means is configured to change in brightness over time. 発光手段の発光巾を経時的に変化させる構成とした請求項のいずれか1項に記載の誘導加熱調理器。The induction heating cooker according to any one of claims 1 to 5 , wherein the light emission width of the light emitting means is changed over time. 外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有するトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた発光手段とを備え、前記トッププレートの下面の前記発光手段に対応する位置の少なくとも一部に光の透過率の異なる部位を交互に設けるとともに、前記発光手段は光源と導光体とからなり、前記光源と前記導光体との位置関係を経時的に変化させる構成とした誘導加熱調理器。 A main body constituting an outer shell, a top plate having a heating part for placing the object to be heated provided on the upper surface of the main body, a heating coil for induction heating the object to be heated provided below the top plate, Light emitting means provided on at least a part of the outer peripheral portion of the heating coil, and alternately providing portions having different light transmittances in at least a part of the position corresponding to the light emitting means on the lower surface of the top plate, emitting means comprises a light source and a light guide body, induction heating cooker and over time alters constituting the positional relationship between the light guide and the light source. 外郭を構成する本体と、前記本体の上面に設けた被加熱物を載置する加熱部を有するトッププレートと、前記トッププレートの下方に設けた前記被加熱物を誘導加熱する加熱コイルと、前記加熱コイルの外周部の少なくとも一部に設けた発光手段とを備え、前記トッププレートの下面の前記発光手段に対応する位置の少なくとも一部に光の透過率の異なる部位を交互に設けるとともに、前記発光手段の発光面と前記トッププレートとの位置関係を経時的に変化させる構成とした誘導加熱調理器。 A main body constituting an outer shell, a top plate having a heating part for placing the object to be heated provided on the upper surface of the main body, a heating coil for induction heating the object to be heated provided below the top plate, Light emitting means provided on at least a part of the outer peripheral portion of the heating coil, and alternately providing portions having different light transmittances in at least a part of the position corresponding to the light emitting means on the lower surface of the top plate, induction heating cooker and over time alters structure light emitting surface and the positional relationship between the top plate of the light emitting means.
JP2002056968A 2002-03-04 2002-03-04 Induction heating cooker Expired - Lifetime JP3736477B2 (en)

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JP4133408B2 (en) * 2003-02-14 2008-08-13 株式会社東芝 Induction heating cooker
JP4978280B2 (en) * 2007-04-06 2012-07-18 パナソニック株式会社 Induction heating device
EP2405713B1 (en) * 2010-07-09 2012-12-26 Electrolux Home Products Corporation N.V. An induction cooking hob with illumination equipment
KR101369278B1 (en) 2012-01-13 2014-03-06 조강욱 Electric range for forming hologram image of flame
KR101993749B1 (en) * 2013-11-26 2019-06-27 삼성전자주식회사 Induction heating cooker
KR102208812B1 (en) 2014-05-30 2021-01-28 삼성전자주식회사 Induction heating cooker
KR102270491B1 (en) * 2014-05-30 2021-06-29 삼성전자주식회사 Induction heating cooker
WO2017076469A1 (en) * 2015-11-06 2017-05-11 Arcelik Anonim Sirketi Induction cooker with improved usability
CN112425261B (en) 2018-07-18 2022-12-09 三菱电机株式会社 Heating cooker

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