JP3885772B2

JP3885772B2 - Cooker

Info

Publication number: JP3885772B2
Application number: JP2003182309A
Authority: JP
Inventors: 和一岡田; 政廣横野; 勝行相原; 貴晶日下
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2003-06-26
Filing date: 2003-06-26
Publication date: 2007-02-28
Anticipated expiration: 2023-06-26
Also published as: JP2005019194A

Description

【０００１】
【発明の属する技術分野】
本発明は、ロースターを備えた一般家庭で使用する複合の加熱調理器に関するもので、加熱部やロースターの出力設定を行う操作部の温度低減をはかったものである。
【０００２】
【従来の技術】
従来、ロースターを備えた加熱調理器においては、ロースターからの熱影響を低減するため、通常使用時には電子部品を冷却ファンによる冷却風により冷却するとともに、異常時には温度センサーの検知にて加熱停止させ、電子部品の異常温度上昇を防ぐようにしたものが知られている（例えば、特許文献１参照）。
【０００３】
その構成を図４に示している。図は誘導加熱調理器を示しており、通常は、鍋１を加熱するため加熱コイル２を駆動すると、冷却ファン３の冷却風により、トランジスタ４やプリント配線板５上の部品が冷却される。また、ロースターのヒーター６が通電されたときも冷却ファン３は動作し、ロースター側から上昇する熱を阻止し、トランジスタ４やプリント配線板５上の部品を冷却する。ところが、異常時、つまり冷却ファン３の吸い込み口７が目詰まりしたり、冷却ファン３が何らかの原因で回転しなかったりしたときは、トランジスタ４の放熱フィン８などの温度を検知している温度センサー９が、ヒーター６が動作しているときは通気孔１０によってロースター側の熱を直接受熱し、プリント配線板５に構成した回路への通電を停止して、現在動作している加熱を停止させ、プリント配線板５の周囲温度を上昇させないようにしている。
【０００４】
【特許文献１】
特開平９−２６００５５号公報
【０００５】
【発明が解決しようとする課題】
ところで、近年、誘導加熱調理器は普及が高まるにつれ、操作のしやすさなど使い勝手の良い形態の誘導加熱調理器が望まれるようになってきた。例えば、加熱コイルやロースターの出力設定を行う操作部は、調理器の本体上面で加熱コイルの前に対応配置して操作しやすくしたり、また、ロースターは両面焼きにしたりするなど、操作性と使い勝手の良さが要請されている。
【０００６】
しかしながら、前記従来の構成では、要請される操作部の配置部分は、ロースターの熱を受けやすいため、操作部を構成する電子回路部品などの温度が高くなり、配置が困難であった。加えて、ロースターを両面焼きにしてロースターの使い勝手を向上させる場合は、操作部の配置がより困難となるものであった。すなわち、下面焼き側ヒーターを配置するため、ロースターユニットに高さ方向の空間が必要となり、ロースターユニットの上端位置が高くなる。このため、調理器全体の高さを抑える必要があり、操作部とロースターユニットとがより近接することになり、ロースターの熱影響を受けやすいためである。
【０００７】
本発明は、前記従来の課題を解決するもので、加熱部やロースターの出力設定を行う操作部の温度低減をはかることができ、ロースターの熱影響に関係なく、操作しやすく、使い勝手の良い位置に操作部を配置することができる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】
前記目的を達成するために、本発明の加熱調理器は、前記本体の上面に設けたトッププレートと、前記トッププレートに載置した鍋などの被加熱物を加熱する加熱コイルよりなる複数の加熱部と、前記加熱部の出力を制御する駆動回路と、前記加熱部の下方に配したロースターと、前記本体の上面手前に配置され前記加熱部やロースターの出力設定を行う操作部と、前記ロースターの側方に複数層設けた駆動回路と、加熱部や駆動回路へ冷却風を供給する冷却ファンとを備え、前記操作部は、操作回路基板の周囲を囲ったダクト構成とし、前記操作部のダクト内に前記操作部のダクト下面の前記ロースターから遠い側に配した通気入り口から、下層の前記駆動回路を通過した冷却風を供給して通気層を形成してなるとともに、前記下層の前記駆動回路を通過した冷却風を前記操作部のダクトを通して前記ロースター側の加熱部に供給するものである。
【０００９】
これにより、冷却風で操作部の温度低減をはかることができ、ロースターの熱影響に関係なく、操作しやすく、使い勝手の良い位置に操作部を配置することができるものである。また、下層の駆動回路を通過した後の温度上昇が比較的低い冷却風を、マイコンや液晶など低発熱部品で構成された操作回路基盤周囲のダクトを経由して、冷却風が達しにくいロースター側の加熱部に確実に送ることができ、ロースター側の加熱部の温度低減をはかることができる。
【００１０】
【発明の実施の形態】
請求項１に記載の発明は、調理器の本体と、前記本体の上面に設けたトッププレートと、前記トッププレートに載置した鍋などの被加熱物を加熱する加熱コイルよりなる複数の加熱部と、前記加熱部の出力を制御する駆動回路と、前記加熱部の下方に配したロースターと、前記本体の上面手前に配置され前記加熱部やロースターの出力設定を行う操作部と、前記ロースターの側方に複数層設けた駆動回路と、加熱部や駆動回路へ冷却風を供給する冷却ファンとを備え、前記操作部は、操作回路基板の周囲を囲ったダクト構成とし、前記操作部のダクト内に前記操作部のダクト下面の前記ロースターから遠い側に配した通気入り口から、下層の前記駆動回路を通過した冷却風を供給して通気層を形成してなるとともに、前記下層の前記駆動回路を通過した冷却風を前記操作部のダクトを通して前記ロースター側の加熱部に供給する加熱調理器としたことにより、冷却風で操作部の温度低減をはかることができ、ロースターの熱影響に関係なく、操作しやすく、使い勝手の良い位置に操作部を配置することができ、かつ、下層の駆動回路を通過した後の温度上昇が比較的低い冷却風を、マイコンや液晶など低発熱部品で構成された操作回路基盤周囲のダクトを経由して、冷却風が達しにくいロースター側の加熱部に確実に送ることができ、ロースター側の加熱部の温度低減をはかることができる。
【００１１】
請求項２に記載の発明は、操作部および加熱部と、ロースターとを隔離する仕切り板を本体内部に備え、前記仕切り板と前記操作部のダクト下面との間に第２の通気層を形成した請求項１に記載の加熱調理器としたことにより、２重の通気層で操作部がロースターの熱影響を受けず、所望の位置に操作部を配置することができるものである。
【００１２】
請求項３に記載の発明は、操作部の下方位置で、仕切り板とロースター側との間に第３の通気層を形成した請求項２に記載の加熱調理器としたことにより、３重の通気層で操作部がロースターの熱影響を受けず、所望の位置に操作部を配置することができるものである。
【００１３】
請求項４に記載の発明は、操作部を構成する操作回路基板に温度検出素子を設けた請求項１〜３のいずれか１項に記載の加熱調理器としたことにより、温度検出素子で異常状態を容易に検出することができるものである。
【００１４】
請求項５に記載の発明は、調理器の本体と、前記本体の上面に設けたトッププレートと、前記トッププレートに載置した鍋などの被加熱物を加熱する複数の加熱部と、前記加熱部の出力を制御する駆動回路と、前記加熱部の下方に配したロースターと、前記加熱部やロースターの出力設定を行う操作部と、加熱部や駆動回路へ冷却風を供給する冷却ファンとを備え、前記操作部は、操作回路基板の周囲を囲ったダクト構成とし、前記操作部のダクト内に冷却風を供給して通気層を形成してなるとともに、前記駆動回路を前記ロースターの側方に複数層設け、上層の前記駆動回路を通過した冷却風を主に近接する前記加熱部に供給し、下層の前記駆動回路を通過した冷却風を、前記操作部のダクトを通して前記ロースター側の前記加熱部に供給する加熱調理器としたことにより、複数の駆動回路と、冷却風が達しにくいロースター側の加熱部に、冷却風を確実に供給することができ、駆動回路と加熱部の温度低減をはかることができる。
【００１５】
請求項６に記載の発明は、下層の駆動回路を通過した冷却風を、本体前面の内側に沿わせて操作部のダクトに供給する請求項５に記載の加熱調理器としたことにより、通常使用時に触れたり、電源スイッチを配したりする本体前面の温度低減を容易に行うことができる。
【００１６】
請求項７に記載の発明は、調理器の本体と、前記本体の上面に設けたトッププレートと、前記トッププレートに載置した鍋などの被加熱物を加熱する複数の加熱部と、前記加熱部の出力を制御する駆動回路と、前記加熱部の下方に配したロースターと、前記加熱部やロースターの出力設定を行う操作部と、加熱部や駆動回路へ冷却風を供給する冷却ファンと、前記本体内に設けられ前記操作部および前記加熱部と前記ロースターとを隔離する仕切り板とを備え、前記操作部は、操作回路基板の周囲を囲ったダクト構成とし、前記操作部のダクト内に冷却風を供給して通気層を形成してなるとともに、前記操作部のダクトから出る冷却風を、前記加熱部の上面側に供給し、前記仕切り板と前記操作部のダクト下面との間の第２の通気層を通る冷却風を、前記加熱部の下面側に供給する加熱調理器としたことにより、特に、冷却風が達しにくくかつロースターの輻射熱を受ける、ロースター側の加熱部における上下両面の温度低減をはかることができる。
【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。本実施例においては、加熱調理器として誘導加熱調理器を例にとって説明する。
【００１８】
図１において、２１は誘導加熱調理器の外郭を構成する本体、２２は本体２１の上面に設けたトッププレート、２３ａ、２３ｂはトッププレート２２上の鍋を載置する部分、いわゆるコンロ部である。２４は操作パネルで、この操作パネル２４の下方には、操作部２８が設けられている。操作部２８は、スイッチや液晶表示素子などを配した操作回路基板２５と、操作カバー上２６と、操作カバー下２７とからユニットとして構成され、トッププレート２２を保持するトップフレーム２９に固定されている。操作パネル２４と操作部２８は、コンロ部２３ａ、２３ｂおよびコンロ部２３ｂの下方に配したロースター３０に対応して、それぞれ操作ブロック３１ａ、３１ｂ、３１ｃにブロック化されている。３２ａ、３２ｂはトッププレート２２上に載置した鍋などの被加熱物を高周波加熱する加熱コイルよりなる加熱部で、コンロ部２３ａ、２３ｂに対応して複数配置している。
【００１９】
３３ａ、３３ｂは加熱部３２ａ、３２ｂの出力を制御する駆動回路で、ロースター３０の側方に複数層（実施例では上下２層）設けている。３４は本体２１内を冷却する冷却ファンで、駆動回路３３ａ、３３ｂや加熱部３２ａ、３２ｂへ供給する冷却風の発生源である。これらの配置構成は、図２にわかりやすく示されている。
【００２０】
前記操作部２８は、加熱部３２ａ、３２ｂやロースター３０の出力設定を行うものであり、操作カバー上２６と操作カバー下２７とを組み合わせて操作回路基板２５の周囲を囲ったダクト構成としている。そして、操作カバー下２７は操作ブロック３１ａの下付近を開口して通気入り口３５とし、他方はロースター３０の上に位置する加熱部３２ｂに向けて開口して通気出口３６としている。すなわち、操作部２８は、ダクト内に冷却風を供給して通気入り口３５から通気出口３６に至る、図１に矢印で示す送風経路Ｃによる通気層を形成してなるものである。
【００２１】
図３に示すように、ロースター３０は、魚などを載せる焼き網３７を挟んで上ヒーター３８と下ヒーター３９を備えた両面焼きであり、天部の調理室壁４０の外側に遮熱壁４１を備え、さらに後方に排気筒４２を配している。そして、本体２１内部において、操作部２８を構成する操作カバー下２７とロースター３０と間には、操作部２８および加熱部３２ｂとロースター３０とを隔離する仕切り板４３を備えている。この構成により、操作部２８を構成する操作カバー上２６と操作カバー下２７によるダクトによる通気層に加え、仕切り板４３と操作部２８の下面との間に、図１に矢印で示す送風経路Ｄによる第２の通気層を形成している。
【００２２】
また、本体２１内部は、遮熱を兼ねた分離壁４６により駆動回路３３ａ、３３ｂなどを配する制御部空間４５と、ロースター３０部とに左右に分離し、仕切り板４３の下部で操作部２８下方位置に開口４７を設けている。これにより、仕切り板４３下方のロースター側空間４８（図３）を、図１に矢印で示す送風経路Ｅによる第３の通気層を形成している。
【００２３】
次に、以上の構成による作用について説明する。
【００２４】
操作部２８は本体２１の上面手前の略全幅にわたり配置すると、ロースター３０の上に位置する範囲はロースター３０の輻射熱を受ける。一方、電子部品や液晶表示素子など使用温度限度が７０°Ｃ前後である、耐熱が比較的低い部品を多数使用した操作回路基板２５や、直接触れて使用する操作パネル２４は温度上昇を抑える必要がある。そこで、操作カバー下２７に備えた通気入り口３５から、操作カバー上２６と操作カバー下２７とは組み合わせた中空状のダクト内に、ロースター３１の熱影響を受ける前の冷却風を操作部２８内に送風する。すなわち、図１に矢印で示す送風経路Ｃが形成される。従って、操作回路基板２５の温度を容易に使用温度限度よりも低くできるので、ロースター３０の熱影響を操作部２８が受け難く、操作部２８をロースター３０上に位置する本体２１の上面手前に配置できると同時に、操作面すなわち操作パネル２４上面の温度低減をはかることができる。操作カバー２６上面には、液晶表示素子やスイッチを操作パネル２４に露出するための穴があいているが、これらの穴は最小限の大きさに設定され液晶表示素子やスイッチでほとんどが塞がれる。しかし若干の隙間があり、この隙間から漏れた冷却風が操作パネル２４に当り操作面温度が低減される。また、冷却風の大部分は操作部２８の通気出口３６から吐き出し、本体２１の左側でロースター３０の上に位置する加熱部３２ｂの方向に送風できる。
【００２５】
また、前述の作用に加え、操作部２８の下方において、仕切り板４３と操作部２８の下面との間に形成した第２の通気層にも同時に送風することで、操作部２８のダクトで構成した通気層に加え２重に通気層を形成する。すなわち、図１に矢印で示す送風経路Ｄが送風経路Ｃに加えて同時に形成されるので、ロースター３０の熱が操作部２８や操作パネル２４に達し難くして温度を低減し、操作部２８を容易にロースター３０上に位置する本体２１上面に配し、操作面である操作パネル２４や操作回路基板２５の温度をさらに低減することができる。
【００２６】
さらに、操作部２８は前記２重の通気層による断熱層に加え、ロースター３０と、操作部２８および加熱部３２ｂとを隔離する仕切り板４３下部の第３の通気層により、３重にロースター３０の熱が断熱される。すなわち、仕切り板４３とロースター３０の遮熱壁４１との間の空間４８に、分離壁４６に設けた開口４７から送風され第３の通気層が形成される。すなわち、図１に矢印で示す送風経路Ｅが送風経路Ｄおよび送風経路Ｃに加えて同時に形成される。このため、操作部２８と操作パネル２４は、３重の通気層で構成される送風経路による断熱構成により、一層温度低減がはかれ、操作部２８を容易にロースター３０上に位置する本体２１上面に配することができる。
【００２７】
さらに、本実施例では、図１、図３に示すように、操作部２８を構成する操作回路基板２５には、ロースター３０上に位置する部分に温度検出素子４９を配している。温度検出素子４９が所定温度以上を検知すると、本体２１内の発熱源、すなわち、ロースター３０と加熱部３２ａ、３２ｂの通電を停止する。温度検出素子４９の温度は、通常は前述した操作部２８付近の送風経路Ｃ、Ｄ、Ｅによる断熱構成により、許容温度上限値に対し十分低いものであるので、異常に対する温度検知幅を十分に広く確保できる。一方、冷却ファン３４の吸い込み口の目詰まりなど、冷却風の流れが弱まる異常が生じた時には、冷却風による断熱効果が弱まり、ロースター３０の輻射熱を受けて温度検出素子４９の温度が上昇するので、冷却風の流れが弱まる異常を容易に検出することができる。これにより、操作部２８や操作パネル２４の温度が許容値に達するまでに、容易に異常を検出できる。
【００２８】
また、２個の加熱部３２ａ、３２ｂの駆動回路３３ａ、３３ｂをロースター３０の右側方に上下２層で配し、図２に示すように、上層の駆動回路３３ａを通過した送風を駆動回路３３ａに近接しその上に配した加熱部３２ａに主に送風し、下層の駆動回路３３ｂを通過した送風を、操作カバー下２７のロースター３０から遠い側に配した通気入り口３５を介して、操作回路基板２５周囲の操作カバー上２６と操作カバー下２７から成るダクト内に送風する。ダクト内を通過した後は、通気出口３６からロースター３０側の加熱部３２ｂに送り出している。
【００２９】
この構成により、下層の駆動回路３３ｂを通過した後の温度上昇値が１５Ｋ程度であり、温度上昇が比較的低い冷却風を、マイコンや液晶など低発熱部品で構成された操作回路基盤２５周囲のダクトを経由して、冷却風が達しにくいロースター３０側の加熱部３２ｂに確実に送ることができ、ロースター３０側の加熱部３２ｂの温度低減をはかることができる。
【００３０】
なお、実施例では加熱部の個数を２個とし、駆動回路を２層としたがこれに限るものでなく、上層側の駆動回路を通過した送風を駆動回路に近接しその上に配した加熱部に主に送風し、下層側の駆動回路を通過した送風を、操作回路基板周囲のダクト内を通過した後、ロースター側の加熱部に送り出すものであれば、２個、２層以上の場合でも同様の効果を得ることができる。
【００３１】
また、複数層に配した加熱部３２ａ、３２ｂの駆動回路３３ａ、３３ｂのうち、下層側の駆動回路３３ｂ通過後の送風を、図２に示すように、本体２１の外郭を構成し電源スイッチ５０を保持する本体前面５１の内側に直接当て、内壁面に沿って上向きに偏向した後、操作カバー下２７のロースター３０から遠い側に配した通気入り口３５を介して、操作回路基板２５周囲の操作カバー上２６と操作カバー下２７から成るダクト内に送風するようにしている。そして、ダクト内を通過した後は、通気出口３６からロースター３０側の加熱部３２ｂに送り出している。
【００３２】
この構成により、電源スイッチ５０を配するとともに、通常使用する際に容易に触れる本体前面５１の温度低減をはかるので、操作や使用に快適な調理器を供することができる。
【００３３】
また、図３に矢印で記すように、操作部２８を構成する操作回路基板２５周囲の、操作カバー上２６と操作カバー下２７とで成るダクトから出る通気を、ロースター３０側に配した加熱部３２ｂの上面側、すなわち、加熱部３２ｂ上面とトッププレート２２裏面との隙間に送風している。そして、操作カバー下２７の通気出口３６上端位置は少なくとも加熱部３２ｂを保持するコイルベース５２上面よりも高い位置に設定されている。さらに、仕切り板４３と操作部回路基板２５周囲を囲むダクトを構成する操作カバー下２７下面との間の第２の通気層を通った後の冷却風を、ロースター３０側に配した加熱部３２ｂの下面側に送風する。
【００３４】
この構成により、冷却風が達しにくくかつロースター３０の輻射熱を受ける、ロースター３０側の加熱部３２ｂの上下両面に冷却風を送って冷却し、加熱部３２ｂの温度低減が容易になる。
【００３５】
なお、本実施例の構成以外に、操作部の温度を低減するために、操作部の下部付近で本体の前面に吸い込み口を設け、操作部を囲うように本体内に仕切り壁を設け、仕切り壁で囲った空間は前述した吸い込み口と繋いで、仕切り壁の所定箇所に専用の冷却ファンを配することで、操作部内面に直接外気を導き温度低減をはかる方法が考えられるが、本実施例は、本体内の駆動回路や加熱部を冷却する冷却ファンのみを用いて操作部を同時に冷却するので、操作部専用の冷却ファンが不要である。そして、本体前面の吸い込み口が無いため、キッチン前面からの吸気が無く、使用者が本体の前に立ったときキッチン前面に吸い込み気流が発生するなど違和感が無いため、きわめて実際的なものである。
【００３６】
また、本実施例に記載したものは、常時は冷却ファン３４が駆動され操作部２８の温度を低減しているものであり、吸い込み口が目詰まりするなど冷却経路にトラブルが生じた場合に異常を検出し、加熱通電を停止し、操作部２８を構成する部品の保護をはかるものである。
【００３７】
さらに、本実施例の説明にあたっては、２個の加熱コイルからなる加熱部を有する場合について説明しているが、これに限定されず加熱部は何個あっても良いものである。そして、本発明の意図にかなうものであれば、誘導加熱以外の例えばラジエントヒーターなどの加熱部であってもよいし、これらの組合せのものであってもよい。
【００３８】
【発明の効果】
以上のように、本発明の加熱調理器によれば、加熱部やロースターの出力設定を行う操作部を、操作回路基板の周囲を囲ったダクト構成とし、ダクト内に冷却風を供給して通気層を形成してなるものであり、冷却風で操作部の温度低減をはかることができ、ロースターの熱影響に関係なく、操作しやすく、使い勝手の良い位置に操作部を配置することができるものである。
【図面の簡単な説明】
【図１】本発明の実施例における誘導加熱調理器の分解斜視図
【図２】同誘導加熱調理器のＡ−Ａ線における断面図
【図３】同同誘導加熱調理器のＣ−Ｃ線における断面図
【図４】従来の誘導加熱調理器の断面図
【符号の説明】
２１本体
２２トッププレート
２８操作部
３０ロースター
３２ａ、３２ｂ加熱部
３３ａ、３３ｂ駆動回路
３４冷却ファン
４３仕切り板
４６分離壁
４７開口
４９温度検出素子
５１本体前面[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a composite cooking device used in a general home equipped with a roaster, and is intended to reduce the temperature of a heating unit and an operation unit for setting output of the roaster.
[0002]
[Prior art]
Conventionally, in a cooking device equipped with a roaster, in order to reduce the thermal effect from the roaster, electronic components are cooled by cooling air from a cooling fan during normal use, and when abnormal, the heating is stopped by detection of a temperature sensor, An electronic component that prevents an abnormal temperature rise is known (see, for example, Patent Document 1).
[0003]
The configuration is shown in FIG. The drawing shows an induction heating cooker. Normally, when the heating coil 2 is driven to heat the pan 1, the components on the transistor 4 and the printed wiring board 5 are cooled by the cooling air from the cooling fan 3. Further, the cooling fan 3 operates even when the heater 6 of the roaster is energized, blocks the heat rising from the roaster side, and cools the components on the transistor 4 and the printed wiring board 5. However, when an abnormality occurs, that is, when the suction port 7 of the cooling fan 3 is clogged or the cooling fan 3 does not rotate for some reason, a temperature sensor that detects the temperature of the radiating fins 8 and the like of the transistor 4. 9, when the heater 6 is operating, it directly receives the heat of the roaster side through the vent hole 10, stops energization to the circuit configured on the printed wiring board 5, and stops the heating currently operating. The ambient temperature of the printed wiring board 5 is not increased.
[0004]
[Patent Document 1]
Japanese Patent Laid-Open No. 9-260055
[Problems to be solved by the invention]
By the way, in recent years, as induction heating cookers have become widespread, an induction heating cooker having an easy-to-use form such as ease of operation has been desired. For example, the operation unit for setting the output of the heating coil and roaster is easy to operate by arranging it in front of the heating coil on the upper surface of the main body of the cooker, and the roaster is double-sided. Usability is required.
[0006]
However, in the conventional configuration, since the required arrangement portion of the operation unit is easily subjected to the heat of the roaster, the temperature of the electronic circuit components constituting the operation unit becomes high, and the arrangement is difficult. In addition, when the roaster is double-sided to improve the usability of the roaster, it is more difficult to arrange the operation unit. That is, since the bottom side heater is disposed, a space in the height direction is required for the roaster unit, and the upper end position of the roaster unit is increased. For this reason, it is necessary to suppress the height of the entire cooking device, and the operation unit and the roaster unit are closer to each other, which is easily affected by the heat of the roaster.
[0007]
The present invention solves the above-mentioned conventional problems, can reduce the temperature of the operation unit for setting the output of the heating unit and the roaster, and is easy to operate regardless of the thermal effect of the roaster, and is easy to use. An object of the present invention is to provide a cooking device in which an operation unit can be arranged.
[0008]
[Means for Solving the Problems]
In order to achieve the above object, a heating cooker according to the present invention comprises a top plate provided on the upper surface of the main body and a plurality of heating coils comprising a heating coil for heating an object to be heated such as a pan placed on the top plate. A driving circuit that controls the output of the heating unit, a roaster disposed below the heating unit, an operation unit that is disposed in front of the upper surface of the main body and performs output setting of the heating unit and the roaster, and the roaster A driving circuit provided with a plurality of layers on the side of the heating circuit and a cooling fan for supplying cooling air to the heating unit and the driving circuit, and the operation unit has a duct configuration surrounding the operation circuit board . from the ventilation inlet wherein arranged from roaster farther duct lower surface of the operating portion in the duct, it becomes to form the ventilation layer by supplying the cooling air which has passed through the drive circuit of the lower layer, the lower layer of the The cooling air which has passed through the dynamic circuit is intended to be supplied to the heating portion of the roaster side through the duct of the manipulation portion.
[0009]
Accordingly, the temperature of the operation unit can be reduced with cooling air, and the operation unit can be arranged at a position that is easy to operate and easy to use regardless of the thermal effect of the roaster. In addition, the cooling air, which has a relatively low temperature rise after passing through the lower drive circuit, passes through the duct around the operation circuit board composed of low heat-generating parts such as a microcomputer and liquid crystal, so that the cooling air is difficult to reach. Can be reliably sent to the heating section, and the temperature of the heating section on the roaster side can be reduced.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
The invention according to claim 1 is a plurality of heating units comprising a main body of a cooker, a top plate provided on an upper surface of the main body, and a heating coil for heating an object to be heated such as a pan placed on the top plate. When a driving circuit for controlling the output of the heating unit, and the roaster arranged below the heating portion, an operation section disposed on an upper surface front of the body performing the output settings of the heating unit and the roaster, the roaster a drive circuit provided plural layers laterally, and a cooling fan for supplying cooling air to the heating unit and the drive circuit, the operation portion includes a duct configuration surrounding the periphery of the operation circuit board, the duct of the operating unit from the vent entrance arranged farther from said roaster duct lower surface of the operating unit within, together by forming a ventilation layer by supplying the cooling air which has passed through the drive circuit of the lower layer, the lower layer of the driving circuit By the cooling air which has passed through the heating cooker is supplied to the heating portion of the roaster side through the duct of the operating unit, it is possible to achieve a temperature reduction of controls cooling air, regardless of the thermal influence of the roaster, The operation part can be placed in a position that is easy to operate and easy to use , and the cooling air that has a relatively low temperature rise after passing through the lower drive circuit is composed of low heat-generating parts such as a microcomputer and liquid crystal. Via the duct around the operation circuit board, the cooling air can be reliably sent to the heating section on the roaster side, and the temperature of the heating section on the roaster side can be reduced.
[0011]
According to a second aspect of the present invention, a partition plate that separates the operation unit, the heating unit, and the roaster is provided inside the main body, and a second ventilation layer is formed between the partition plate and the duct lower surface of the operation unit. By using the heating cooker according to claim 1, the operation portion is not affected by the heat of the roaster by the double ventilation layer, and the operation portion can be arranged at a desired position.
[0012]
The invention according to claim 3 is a three-layered cooking device according to claim 2 in which a third ventilation layer is formed between the partition plate and the roaster side at a position below the operation portion. The operation portion is not affected by the heat of the roaster in the ventilation layer, and the operation portion can be arranged at a desired position.
[0013]
The invention according to claim 4 is abnormal in the temperature detection element by using the heating cooker according to any one of claims 1 to 3 in which the temperature detection element is provided on the operation circuit board constituting the operation unit. The state can be easily detected.
[0014]
The invention according to claim 5 includes a main body of a cooker, a top plate provided on an upper surface of the main body, a plurality of heating units for heating an object to be heated such as a pan placed on the top plate, and the heating A driving circuit for controlling the output of the heating unit, a roaster disposed below the heating unit, an operation unit for setting the output of the heating unit and the roaster, and a cooling fan for supplying cooling air to the heating unit and the driving circuit The operation unit has a duct configuration that surrounds the periphery of the operation circuit board, and a cooling air is supplied into the duct of the operation unit to form a ventilation layer, and the drive circuit is disposed on the side of the roaster. a plurality layers, the cooling air which has passed through the drive circuit of the upper layer was supplied to the heating unit for mainly close, the cooling air which has passed through the drive circuit of the lower layer, the said roaster side through the duct of the operating unit Supply to heating unit By was that pressurized heat cooker, a plurality of drive circuits, the heating part of the cooling air reaches difficult roaster side, the cooling air can be reliably supplied, to achieve the temperature reduction of the heating portion and the driver circuit Can do.
[0015]
The invention according to claim 6 is the heating cooker according to claim 5 in which the cooling air that has passed through the lower drive circuit is supplied to the duct of the operation unit along the inside of the front surface of the main body. It is possible to easily reduce the temperature of the front surface of the main body where it is touched during use or a power switch is arranged.
[0016]
The invention according to claim 7 includes a main body of the cooker, a top plate provided on an upper surface of the main body, a plurality of heating units for heating an object to be heated such as a pan placed on the top plate, and the heating A driving circuit that controls the output of the heating unit, a roaster disposed below the heating unit, an operation unit that performs output setting of the heating unit and the roaster, a cooling fan that supplies cooling air to the heating unit and the driving circuit, A partition plate provided in the main body and separating the operation unit, the heating unit, and the roaster; the operation unit has a duct configuration surrounding an operation circuit board; and in the duct of the operation unit together by forming a ventilation layer by supplying cooling air, the cooling air exiting from the duct of the operating unit, is supplied to the upper surface side of the heating portion, between the duct lower surface of the operation portion and the partition plate Cold through the second vent layer Wind, by which the pressurized heat cooker you supplied to the lower surface side of the heating unit, in particular, receive the radiant heat hardly and roaster cooling air reaches, to achieve the temperature reduction of the upper and lower surfaces in the heating section of the roaster side Can do.
[0017]
【Example】
Embodiments of the present invention will be described below with reference to the drawings. In this embodiment, an induction heating cooker will be described as an example of a heating cooker.
[0018]
In FIG. 1, 21 is a main body constituting the outer shell of the induction heating cooker, 22 is a top plate provided on the upper surface of the main body 21, 23a and 23b are portions on which a pan on the top plate 22 is placed, a so-called stove portion. . Reference numeral 24 denotes an operation panel. An operation unit 28 is provided below the operation panel 24. The operation unit 28 is configured as a unit including an operation circuit board 25 provided with switches, liquid crystal display elements, and the like, an operation cover upper 26, and an operation cover lower 27, and is fixed to a top frame 29 that holds the top plate 22. Yes. The operation panel 24 and the operation unit 28 are divided into operation blocks 31a, 31b, and 31c, respectively, corresponding to the stove units 23a and 23b and the roaster 30 disposed below the stove unit 23b. Reference numerals 32a and 32b denote heating units made of a heating coil for high-frequency heating an object to be heated such as a pan placed on the top plate 22, and a plurality of heating units 32a and 32b are arranged corresponding to the stove units 23a and 23b.
[0019]
Reference numerals 33a and 33b denote drive circuits for controlling the outputs of the heating units 32a and 32b, and a plurality of layers (upper and lower two layers in the embodiment) are provided on the side of the roaster 30. Reference numeral 34 denotes a cooling fan that cools the inside of the main body 21, and is a source of cooling air supplied to the drive circuits 33a and 33b and the heating units 32a and 32b. These arrangements are clearly shown in FIG.
[0020]
The operation unit 28 sets the output of the heating units 32 a and 32 b and the roaster 30, and has a duct configuration that surrounds the operation circuit board 25 by combining the upper operation cover 26 and the lower operation cover 27. The lower part 27 of the operation cover is opened near the lower part of the operation block 31 a and serves as a ventilation inlet 35, and the other is opened toward the heating part 32 b located above the roaster 30 and serves as a ventilation outlet 36. That is, the operation part 28 forms a ventilation layer by the ventilation path C shown by the arrow in FIG. 1, which supplies cooling air into the duct and extends from the ventilation inlet 35 to the ventilation outlet 36.
[0021]
As shown in FIG. 3, the roaster 30 is a double-sided grill provided with an upper heater 38 and a lower heater 39 with a grill 37 on which fish or the like is placed, and a heat shield wall 41 on the outside of the top cooking chamber wall 40. Further, an exhaust cylinder 42 is disposed on the rear side. In the main body 21, a partition plate 43 that isolates the operation unit 28, the heating unit 32 b, and the roaster 30 is provided between the operation cover lower part 27 and the roaster 30 constituting the operation unit 28. With this configuration, in addition to the ventilation layer formed by the duct formed by the operation cover upper 26 and the operation cover lower 27 constituting the operation unit 28, the air flow path D indicated by an arrow in FIG. 1 between the partition plate 43 and the lower surface of the operation unit 28. The 2nd ventilation layer by is formed.
[0022]
Further, the inside of the main body 21 is separated into a control part space 45 in which drive circuits 33a and 33b and the like are arranged by a separation wall 46 that also serves as heat insulation and a roaster 30 part, and the operation part 28 is provided below the partition plate 43. An opening 47 is provided at a lower position. Thereby, the 3rd ventilation layer by the ventilation path E shown by the arrow in FIG. 1 is formed in the roaster side space 48 (FIG. 3) below the partition plate 43.
[0023]
Next, the effect | action by the above structure is demonstrated.
[0024]
When the operation unit 28 is disposed over substantially the entire width in front of the upper surface of the main body 21, the range located on the roaster 30 receives the radiant heat of the roaster 30. On the other hand, the operating circuit board 25 using many components with relatively low heat resistance, such as electronic components and liquid crystal display elements, whose operating temperature limit is around 70 ° C., and the operating panel 24 used by direct touching must suppress the temperature rise. There is. Therefore, the cooling air before being affected by the heat of the roaster 31 is passed through the air inlet 35 provided in the lower operation cover 27 into the hollow duct combined with the upper operation cover 26 and the lower operation cover 27. To blow. That is, the air supply path C shown by the arrow in FIG. 1 is formed. Accordingly, since the temperature of the operation circuit board 25 can be easily lowered below the operating temperature limit, the operation unit 28 is not easily affected by the heat of the roaster 30, and the operation unit 28 is disposed in front of the main body 21 positioned on the roaster 30. At the same time, the temperature of the operation surface, that is, the upper surface of the operation panel 24 can be reduced. The upper surface of the operation cover 26 has holes for exposing the liquid crystal display elements and switches to the operation panel 24. These holes are set to a minimum size, and are almost closed by the liquid crystal display elements and switches. It is. However, there is a slight gap, and the cooling air leaking from this gap hits the operation panel 24 to reduce the operation surface temperature. Most of the cooling air is discharged from the ventilation outlet 36 of the operation unit 28 and can be blown in the direction of the heating unit 32 b positioned on the roaster 30 on the left side of the main body 21.
[0025]
Further, in addition to the above-described action, the air is also blown to the second ventilation layer formed between the partition plate 43 and the lower surface of the operation unit 28 below the operation unit 28, thereby forming a duct of the operation unit 28. In addition to the ventilation layer, a ventilation layer is formed twice. That is, since the air flow path D indicated by the arrow in FIG. 1 is formed at the same time in addition to the air flow path C, the heat of the roaster 30 does not easily reach the operation unit 28 or the operation panel 24 and the temperature is reduced. It can be easily arranged on the upper surface of the main body 21 located on the roaster 30 and the temperature of the operation panel 24 and the operation circuit board 25 which are operation surfaces can be further reduced.
[0026]
In addition to the heat insulating layer formed by the double ventilation layer, the operation unit 28 is triple-rotated by the third ventilation layer below the partition plate 43 that separates the roaster 30 from the operation unit 28 and the heating unit 32b. The heat is insulated. That is, the third ventilation layer is formed in the space 48 between the partition plate 43 and the heat shield wall 41 of the roaster 30 by blowing from the opening 47 provided in the separation wall 46. That is, in addition to the ventilation path D and the ventilation path C, the ventilation path E shown by the arrow in FIG. For this reason, the operation unit 28 and the operation panel 24 are further reduced in temperature by the heat insulation structure by the air flow path formed by the triple ventilation layer, and the operation unit 28 is easily positioned on the roaster 30. Can be arranged.
[0027]
Further, in the present embodiment, as shown in FIGS. 1 and 3, a temperature detection element 49 is arranged in a portion located on the roaster 30 in the operation circuit board 25 constituting the operation unit 28. When the temperature detection element 49 detects a predetermined temperature or higher, the energization of the heat source in the main body 21, that is, the roaster 30 and the heating units 32a and 32b is stopped. The temperature of the temperature detecting element 49 is normally sufficiently low with respect to the upper limit of the allowable temperature due to the heat insulation structure by the air flow paths C, D, E near the operation unit 28 described above, so that the temperature detection width for the abnormality is sufficiently large. Widely secured. On the other hand, when an abnormality occurs in which the flow of cooling air weakens, such as clogging of the suction port of the cooling fan 34, the heat insulation effect by the cooling air is weakened, and the temperature of the temperature detecting element 49 rises due to the radiant heat of the roaster 30. An abnormality in which the flow of cooling air weakens can be easily detected. Thereby, an abnormality can be easily detected before the temperature of the operation unit 28 or the operation panel 24 reaches an allowable value.
[0028]
Further, the drive circuits 33a and 33b of the two heating units 32a and 32b are arranged in two layers on the right side of the roaster 30, and as shown in FIG. 2, the air that has passed through the upper drive circuit 33a is sent to the drive circuit 33a. The operation circuit is mainly blown to the heating unit 32a disposed adjacent to and over the lower drive circuit 33b via the ventilation inlet 35 disposed on the side farther from the roaster 30 below the operation cover 27. The air is blown into a duct composed of an upper operation cover 26 and a lower operation cover 27 around the substrate 25. After passing through the duct, it is sent out from the ventilation outlet 36 to the heating unit 32b on the roaster 30 side.
[0029]
With this configuration, the temperature rise value after passing through the lower drive circuit 33b is about 15K, and the cooling air with a relatively low temperature rise is generated around the operation circuit board 25 composed of a low heat-generating component such as a microcomputer or a liquid crystal. The cooling air can be reliably sent to the heating unit 32b on the roaster 30 side through the duct, and the temperature of the heating unit 32b on the roaster 30 side can be reduced.
[0030]
In the embodiment, the number of heating units is two and the drive circuit is two layers. However, the present invention is not limited to this, and the air that has passed through the drive circuit on the upper layer side is adjacent to the drive circuit and is disposed thereon. If there are two, two or more layers, as long as it blows mainly to the part and sends the blown air that has passed through the drive circuit on the lower layer side to the heating part on the roaster side after passing through the duct around the operation circuit board However, the same effect can be obtained.
[0031]
In addition, among the drive circuits 33a and 33b of the heating units 32a and 32b arranged in a plurality of layers, the air blown after passing through the lower drive circuit 33b constitutes the outline of the main body 21 as shown in FIG. Is directly applied to the inside of the front surface 51 of the main body holding the light and deflected upward along the inner wall surface, and then the operation around the operation circuit board 25 is performed through the vent inlet 35 disposed on the side farther from the roaster 30 below the operation cover 27. The air is blown into a duct composed of the upper cover 26 and the lower operation cover 27. And after passing through the inside of a duct, it sends out from the ventilation outlet 36 to the heating part 32b by the side of the roaster 30.
[0032]
With this configuration, the power switch 50 is provided, and the temperature of the main body front surface 51 that is easily touched during normal use is reduced, so that a cooking device that is comfortable to operate and use can be provided.
[0033]
Further, as indicated by an arrow in FIG. 3, a heating unit in which ventilation around the operation circuit board 25 constituting the operation unit 28 and exiting from a duct composed of the upper operation cover 26 and the lower operation cover 27 is arranged on the roaster 30 side. The air is blown into the upper surface side of 32b, that is, the gap between the upper surface of the heating unit 32b and the back surface of the top plate 22. The upper end position of the ventilation outlet 36 under the operation cover 27 is set at a position higher than at least the upper surface of the coil base 52 that holds the heating unit 32b. Furthermore, the heating part 32b which distribute | circulated the cooling air after passing through the 2nd ventilation layer between the partition plate 43 and the operation cover lower part 27 lower surface which comprises the duct surrounding the operation part circuit board 25 circumference | surroundings to the roaster 30 side. The air is blown to the lower surface side.
[0034]
With this configuration, cooling air is sent to both the upper and lower surfaces of the heating unit 32b on the roaster 30 side, which is hard to reach the cooling air and receives the radiant heat of the roaster 30, and the temperature of the heating unit 32b is easily reduced.
[0035]
In addition to the configuration of this embodiment, in order to reduce the temperature of the operation unit, a suction port is provided on the front surface of the main unit near the lower part of the operation unit, and a partition wall is provided in the main unit so as to surround the operation unit. The space surrounded by the wall is connected to the suction port described above, and a dedicated cooling fan is placed at a predetermined location on the partition wall, so that it is possible to reduce the temperature by directing outside air directly to the inner surface of the operation unit. In the example, the operation unit is cooled at the same time using only the cooling fan that cools the drive circuit and the heating unit in the main body, so that a cooling fan dedicated to the operation unit is unnecessary. And since there is no suction port on the front of the main body, there is no inhalation from the front of the kitchen, and when the user stands in front of the main body, there is no sense of incongruity such as a suction airflow generated on the front of the kitchen, so it is very practical .
[0036]
Also, what is described in this embodiment is that the cooling fan 34 is always driven to reduce the temperature of the operation unit 28, and an abnormality occurs when a trouble occurs in the cooling path such as clogging of the suction port. Is detected, heating energization is stopped, and the parts constituting the operation unit 28 are protected.
[0037]
Furthermore, in the description of the present embodiment, the case of having a heating section composed of two heating coils is described, but the present invention is not limited to this, and there may be any number of heating sections. And if it is in accordance with the intention of the present invention, it may be a heating unit other than induction heating, such as a radiant heater, or a combination thereof.
[0038]
【The invention's effect】
As described above, according to the heating cooker of the present invention, the operation unit for setting the output of the heating unit and the roaster is configured as a duct that surrounds the periphery of the operation circuit board, and the cooling air is supplied into the duct for ventilation. A layer is formed, the temperature of the operation part can be reduced with cooling air, and the operation part can be placed in a position that is easy to operate and easy to use regardless of the thermal effect of the roaster It is.
[Brief description of the drawings]
FIG. 1 is an exploded perspective view of an induction heating cooker according to an embodiment of the present invention. FIG. 2 is a cross-sectional view of the induction heating cooker along line AA. FIG. 3 is a CC line of the induction heating cooker. [Fig. 4] Cross-sectional view of a conventional induction heating cooker [Explanation of symbols]
21 Main body 22 Top plate 28 Operation unit 30 Roaster 32a, 32b Heating unit 33a, 33b Drive circuit 34 Cooling fan 43 Partition plate 46 Separation wall 47 Opening 49 Temperature detection element 51 Front surface of main body

Claims

Controls the output of the heating unit, a plurality of heating units composed of a main body of the cooker, a top plate provided on the top surface of the main body, a heating coil for heating an object to be heated such as a pan placed on the top plate, and the like. Driving circuit, a roaster disposed below the heating unit, an operation unit arranged in front of the upper surface of the main body for setting the output of the heating unit and the roaster, and a driving circuit provided in a plurality of layers on the side of the roaster When, and a cooling fan for supplying cooling air to the heating unit and the drive circuit, the operation portion includes a duct configuration surrounding the periphery of the operation circuit board, the duct lower surface of the operating portion into the duct of the operating unit from the vent entrance arranged farther from the roaster, along with by forming a ventilation layer by supplying the cooling air which has passed through the drive circuit of the lower layer, the steering cooling air having passed through the driving circuit of the lower layer Cooker supplied to the heating portion of the roaster side through part of the duct.

The cooking according to claim 1, wherein a partition plate that separates the operation unit and the heating unit from the roaster is provided inside the main body, and a second ventilation layer is formed between the partition plate and a lower surface of the duct of the operation unit. vessel.

The cooking device according to claim 2, wherein a third ventilation layer is formed between the partition plate and the roaster side at a position below the operation unit.

The cooking device according to any one of claims 1 to 3, wherein a temperature detection element is provided on an operation circuit board constituting the operation unit.

A main body of the cooker, a top plate provided on the upper surface of the main body, a plurality of heating units for heating an object to be heated such as a pan placed on the top plate, and a drive circuit for controlling the output of the heating unit A roaster disposed below the heating unit, an operation unit for setting the output of the heating unit and the roaster, and a cooling fan for supplying cooling air to the heating unit and the drive circuit, the operation unit including an operation circuit and enclosed duct constituting the periphery of the substrate, it becomes to form the ventilation layer by supplying cooling air to the duct of the operation unit, a plurality layers of the driving circuit on the side of the roaster, the upper layer of the drive is supplied to the heating portion adjacent the cooling air which has passed through the circuit mainly the cooling air which has passed through the drive circuit of the lower layer, supply pressurized heat cooking through the duct of the operating unit to the heating unit of the roaster side vessel.

The cooking device according to claim 1 or 5, wherein the cooling air that has passed through the lower drive circuit is supplied to the duct of the operation unit along the inside of the front surface of the main body.

A main body of the cooker, a top plate provided on the upper surface of the main body, a plurality of heating units for heating an object to be heated such as a pan placed on the top plate, and a drive circuit for controlling the output of the heating unit A roaster disposed below the heating unit, an operation unit for setting the output of the heating unit and the roaster, a cooling fan for supplying cooling air to the heating unit and a drive circuit, and the operation unit provided in the main body And a partition plate that separates the heating unit and the roaster, and the operation unit has a duct configuration surrounding the operation circuit board, and supplies cooling air into the duct of the operation unit to form a ventilation layer. formed with comprising, a cooling air exiting from the duct of the operating unit, is supplied to the upper surface side of the heating unit, the cooling air passing through the second ventilation layer between the duct lower surface of the partition plate and the operating unit the lower surface of the heating unit Pressurized heat cooker supplied.