JP4022883B2

JP4022883B2 - Induction heating cooker

Info

Publication number: JP4022883B2
Application number: JP2003128207A
Authority: JP
Inventors: 親司上妻; 利男小池; 博井上; 弘司菱山
Original assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Current assignee: Mitsubishi Electric Home Appliance Co Ltd; Mitsubishi Electric Corp
Priority date: 2003-05-06
Filing date: 2003-05-06
Publication date: 2007-12-19
Anticipated expiration: 2023-05-06
Also published as: KR100547365B1; JP2004329492A; CN1547993A; CN100413441C; KR20040095140A

Description

【０００１】
【発明の属する技術分野】
本発明は、誘導加熱調理器に係り、さらに詳しくは、１台の調理器（炊飯器）で炊飯及び惣菜などの煮物を行うことのできる誘導加熱調理器に関するものである。
【０００２】
【従来の技術】
従来のこの種誘導加熱調理器に、電磁誘導加熱装置と炊飯器本体とを分離可能とし、炊飯器として使用する場合は、電磁誘導加熱装置の上に炊飯器本体を載置して加熱することにより炊飯し、他の調理の加熱装置として利用する場合は、電磁誘導加熱装置から炊飯器本体を取外して電気的接続を遮断し、電磁誘導加熱装置の上に別の調理を目的とする鍋等を載置して加熱し、調理を行うようにしたものがある（例えば、特許文献１参照）。
【０００３】
また、誘導加熱により加熱を行う加熱装置と、この加熱装置に選択的に載置し得る複数の調理容器本体とからなり、調理容器本体のうち１つを炊飯用として、この炊飯用調理容器本体に対応した炊飯モードに使用する第１の操作部を加熱装置の側面に設けるとともに、その他の調理容器本体に対応した調理モードに使用する第２の操作部を加熱装置の上面に設け、炊飯用調理容器本体を載置したときに第２の操作部が隠れるようにしたものがある（例えば、特許文献２参照）。
【０００４】
さらに、本体と、本体に着脱自在に収納される内釜と、内釜に入れた米や水を加熱する加熱部と、加熱部を制御する制御部と、制御部へ入力操作するための操作部とを有し、操作部には生米から炊飯する時の炊飯モード用の炊飯スイッチと、その他の食材等を加熱調理するための通常加熱モード用の通常加熱スイッチ及び通常加熱時の出力調節手段を設けたジャー炊飯器がある（例えば、特許文献３参照）。
【０００５】
【特許文献１】
実開昭６３−１０８１９７号公報（第３−６頁、図１−図２）
【特許文献２】
特許第３１０８９５６号公報（第２−３頁、図１−図６）
【特許文献３】
特開２００１−３４６６８４号公報（第２−３頁、図１−図２）
【０００６】
【発明が解決しようとする課題】
特許文献１に記載の炊飯器は、電磁誘導加熱装置に対応して設置されている鍋は炊飯用鍋のみであり、調理の種類としては炊飯が主であるため調理の範囲が狭く限られている。また、炊飯以外の他の食材の調理を行う場合は、その都度電磁誘導加熱装置から炊飯用鍋を取外すと共に電気的接続を遮断し、他の食材が入れられた汎用の鍋等を電磁誘導加熱装置上に載置しなければならないので、きわめて面倒である。
【０００７】
特許文献２に記載の加熱調理器は、加熱装置に選択的に載置しうる複数の調理器本体（鍋）を必要とし、炊飯又は他の食材の調理を行う場合は、その都度加熱装置から調理器本体を取外して他の調理器本体と交換しなければならないので、矢張り面倒である。
【０００８】
特許文献３のジャー炊飯器は、１つの鍋で炊飯と煮物調理が可能であるが、特に、煮物調理の際にうまみの素である煮汁を鍋内に還元する機構が設けられていないので、味の不満が生じたり、煮汁で汚れたりして清掃が面倒である。
【０００９】
本発明は、上記の課題を解決するためになされたもので、１台の調理器に、炊飯用と煮物用の制御パターンを有する制御部を設け、調理の際に内鍋内の調理物を自動的に検出して制御部の制御パターンを切換えるようにした便利で使い勝手のよい誘導加熱調理器を提供することを目的としたものである。
【００１０】
【課題を解決するための手段】
本発明に係る誘導加熱調理器は、誘導加熱コイルと、上部が開口し前記誘導加熱コイルにより発熱する内鍋と、該内鍋の開口部を開閉自在に覆う蓋体と、前記誘導加熱コイルを制御する制御部と、該制御部を外部から操作する操作部とを有する本体ケースを備え、前記内鍋を、炊飯用内鍋と煮物用内鍋とによって構成すると共に、前記蓋体に着脱可能に装着された内蓋を、炊飯用内蓋と煮物用内蓋とにより構成して、前記制御部を、炊飯用と煮物用の制御パターンを有し前記操作部により選択可能に構成し、前記蓋体に内外と連通する蒸気抜き孔及び調理物からのうまみを前記内鍋に還元するうまみ溜りを有するうまみ還元器を設けたものである。
【００１１】
【発明の実施の形態】
［実施の形態１］
図１は本発明の実施の形態１に係る誘導加熱調理器の内鍋収納部に炊飯用鍋を収納した状態を示す縦断面図、図２は図１の外観斜視図、図３は図１の内鍋収納部に蓋体を開放して煮物用鍋を収納した状態を示す斜視図である。
本発明に係る誘導加熱調理器は、上部が開口され内部に内鍋収納部５が形成された本体ケース１と、一端がヒンジ４を介して本体ケース１に取付けられ、本体ケース１の上部開口部を開閉する蓋体２と、上部が開口され内鍋収納部５に収納されて白米等を炊く炊飯用鍋４０及び惣菜等を調理する煮物用鍋４５（以下、白米等及び惣菜等を合わせて調理物ということがある）とからなっている。
【００１２】
内鍋収納部５の底部外壁面には、炊飯用鍋４０及び煮物用鍋４５（以下、両者を合わせて内鍋ということがある）を電磁誘導作用により発熱させて調理するための誘導加熱コイル６が設けられており、また、底部のほぼ中心部には、内鍋の温度を検出する温度センサ７が設けられている。
【００１３】
また、内鍋収納部５の下部には、後述の炊飯用制御パターンや煮物用制御パターン等を有し、電磁誘導コイル６の発熱量や通電時間等を制御する制御部８が設けられており、前面側（以下、図の左側を前面側、右側を後面側という）には、外部から制御部８を操作する操作部９が設けられている。この操作部９には、図４に示すように、炊飯スイッチ９ａ、予約スイッチ９ｂ、保温スイッチ９ｃ、煮物スイッチ９ｄ、火力調整スイッチ９ｅ、低温（保温）スイッチ９ｆ及び表示部９ｇ等が設けられている。１０は本体ケース１の下部後面側に設けられたコードリールである。
【００１４】
蓋体２は上蓋２ａ、下蓋２ｂ及び下蓋２ｂに着脱可能に装着された内蓋２ｃから構成されており、内蓋２ｃは炊飯用内蓋と煮物用内蓋とからなっている。また、上蓋２ａの上面には後述するうまみ還元器２０を着脱可能に装着するための凹部３ａが設けられており、この凹部３ａの前面側には上蓋２ａ、下蓋２ｂ、内蓋２ｃを貫通して、うまみ還元器２０の連結部２３が挿入される貫通穴３ｂが設けられ、貫通穴３ｂとうまみ還元器２０の連結部２３との間には、シール部材３ｃが介装されている。１１は蓋体２の前面側に設けられ、蓋体２を閉じたときにケース本体１にロックするためのラッチである。
【００１５】
うまみ還元器２０は、図５に示すように、横長でほぼ皿状の下ケース２１と、下ケース２１の上部開口部を覆う上ケース２２とから形成されており、下ケース２１の底部の前面側には、蓋体２の貫通穴３ｂに挿入される有底円筒状の連結部２３が突設されている。また、連結部２３の前面側には、うまみ還元器２０の内部と内鍋４０とを連通し、うまみを含む蒸気をうまみ還元器２０内に導く中空の案内筒２４が立設されている。なお、下ケース２１の底部は、連結部２３に形成されたうまみ溜り２５に向って下降する傾斜面に形成されている。
【００１６】
２７は案内筒２３の底部に設けた戻し穴２６を開閉する開閉弁である。２８は下ケース２１の溜り凹部２５と後面側周壁とのほぼ中間部において、蒸気の流れ方向（前後方向）と直交して下ケース１に立設された下障壁で、幅方向の中央部が後方に突出したほぼく字状に形成されており、また、その両端部と周壁との間には開口部（図示せず）が形成されている。
【００１７】
上ケース２２の後面側には蒸気抜き孔２９が設けられており、前面側の下面には前面側が案内筒２４の上端部とほぼ等しく、後面側が案内筒２４の上端部より下方に位置する円筒状の第１の上障壁３０が設けられている。また、下障壁２８の前面側には蒸気の流れ方向と直交して第２の上障壁３１が設けられており、その上部には開口部３２が形成されている。３３は第２の上障壁３１と蒸気口２９との間に設けられた第３の上障壁である。
なお、図には、上ケース２２をヒンジ３４により下ケース２１に開閉可能に取付けた場合を示したが、上ケース２２を下ケース２１に着脱可能に装着するようにしてもよく、このように構成することによりうまみ還元器２０の清掃が容易である。
【００１８】
上記のようなうまみ還元器２０において、例えば、白米と水が入れられて内鍋収納部５に収納された炊飯用鍋４０が誘導加熱コイル６により加熱されて水が沸騰すると、うまみ（おねば）を含んだ蒸気（以下、単に蒸気という）が発生する。このとき、炊飯用鍋４０の内圧が上昇しているので、うまみ還元器２０の開閉弁２７は押し上げられて戻し穴２６を塞いでおり、このため、蒸気は案内筒２４を通ってうまみ還元器２０内に導かれる。案内筒２４を出て第１の上障壁３０に衝突した蒸気は、矢印で示すように、うまみ還元器２０内を蒸気抜き孔２９に向って拡散していき、この間、第２の上障壁３１、下降壁２８、第３の上障壁３３に衝突しておねばと蒸気が確実に分離し、蒸気は蒸気抜き孔２９から外部に放出され、おねばは下ケース２１の底面に沿って流下し、うまみ溜り２５に溜る。
【００１９】
加熱が低下して炊飯用鍋４０の内圧が下ると、開閉弁２７は自重及びおねばの重量によって下降し、戻し穴２６を開口する。これにより、うまみ溜り２５内に溜ったおねばは、戻し穴２６から炊飯用鍋４０内に落下する。おねばが炊飯用鍋４０のご飯に戻ることにより、おねばに含まれるおいしさの成分がご飯に与えられて、つやや粘りのあるおいしいご飯を炊くことができる。また、煮物調理の場合も、煮汁がおねばと同じ役目を果す。
なお、上記の説明では、蓋体２に図５に示すうまみ還元器２０を設けた場合を示したが、うまみ還元器２０の構造はこれに限定するものではなく、他の構造のものであってもよい。
【００２０】
再び図１において、４０は磁性材料からなり、白米などを炊飯する炊飯用鍋で、上部が開口されて鍋収納部５内に収容される本体部４１と、本体部１の上端部外周に形成され、鍋収納部５の上端部５ａに載置されるフランジ４２とからなっている。
４５（図３）は、磁性材料からなり、米以外の惣菜等の煮物などを行う煮物用鍋で、その一例を図６に示す。
【００２１】
図６（ａ）の煮物用鍋４５は、炊飯用鍋４０の本体部４１と相似形状の本体部４６と、本体部４６の上端部において、炊飯用鍋４０のフランジ４２とほぼ同じ位置から外方に張り出され、上方かつ外方に向って階段状に形成されたフランジ４７とからなっている。
【００２２】
図６（ｂ）は煮物用鍋４５の他の例を示すもので、炊飯用鍋４０とほぼ等しい形状の内鍋のフランジ４７に、例えば耐熱性樹脂からなるほぼＳ字状の取っ手４８を取付けたものである。この取っ手４８はフランジ４７に着脱自在に取付けてもよく、あるいは固定してもよい。煮物用鍋４５をこのように構成することにより、他の調理器、例えば誘導加熱コイルを有し、プレート上に鍋を載置して加熱調理し、あるいはガスコンロにより直接煮込み調理を行うことができ、さらに調理を行ったのち、取っ手４８を持って内鍋収納部５に収納して保温のみを行うこともできる。このとき、取っ手４８を煮物用鍋４５から取り外して蓋体２を閉じれば、長時間の保温も可能である。そのときは、操作部９に保温温度制御スイッチ（図示せず）を設けて所定温度に設定すればよい。
【００２３】
以上、煮物用鍋４５の一例について説明したが、これに限定するものではなく、他の形状、構造のものを用いてもよい。
なお、煮物用鍋４５の本体部４６の外径を、炊飯用鍋４０の本体部４１の内径とほぼ等しいか又は若干小さく形成して、図７に示すように、煮物用鍋４５の本体部４６を炊飯用鍋４０の本体部４１内に収納できるようにすれば、コンパクトに梱包することができ、保管、輸送等に便利である。
【００２４】
また、炊飯用鍋４０と煮物用鍋４５とは、上述のようにフランジ４２，４７の形状を変えることにより区別することができるが、さらに、内鍋の本体部４１，４６の内壁の材料を変える（例えば、いずれか一方を銅メッキとする）、材質を変える（例えば、炊飯用鍋４０を強磁性材料で形成し、煮物用鍋４５を弱磁性材料で形成する）、本体部４１，４６の内壁の色を変える、内鍋の肉厚を変える（例えば、煮物用鍋４５の肉厚を炊飯用鍋４０の肉厚より厚くする）等により特定することができるので、間違って使用することがない。
【００２５】
次に、内鍋収納部５に収納された炊飯用鍋４０又は煮物用鍋４５を検知して判別する検知手段について説明する。図８は検知手段と制御系との関係の一例を示す説明図である。
電源５０の一方の配線は本体ケース１内に設けた炊飯と煮物の切換手段である切換スイッチ５１の共通接点５２に接続され、他方の配線は誘導加熱コイル６に接続されており、切換スイッチ５１には炊飯用端子５３と煮物用端子５４が設けられて、可動片５５は常時は煮物用接点５４に接続されている。そして、炊飯用接点５３は操作部９の炊飯スイッチ９ａ、制御部８を経て誘導加熱コイル６に接続され、煮物用接点５４は操作部９の煮物スイッチ９ｄ、制御部８を経て誘導加熱コイル６に接続されている。
【００２６】
また、切換スイッチ５１の炊飯用接点５３側に設けたコイル５６は電源５０に接続されており、その回路中には常時は開放している検知スイッチ６１を備えた検知手段６０が設けられている。
そして、誘導加熱調理器の内鍋収納部５に炊飯用鍋４０を収容すると、検知手段６０の可動部６２が検知スイッチ６１の接片を押圧して回路を閉成し、コイル５６に通電して切換スイッチ５１の可動片５５を吸引し、炊飯用接点５３に接続して炊飯制御系を形成する。炊飯用鍋４０を取出すと検知スイッチ６１の回路が開放され、可動片５５が煮物用接点５４に接続されて煮物用制御系を形成するようになっている。また、内鍋収納部５に煮物用鍋４５を収納すると、検知手段６０の可動片６２は移動せず、可動片６２は煮物用接点５４に接続された状態を維持し、煮物用制御系が形成される。
【００２７】
図９、図１０は検知手段６０の一例を示す説明図で、図９は鍋収納部５に炊飯用鍋４０を収納した状態を示す。
鍋収納部５の上端部５ａの前面側の一段低い位置には平坦部５ｂが設けられており、その下面には検知手段６０を構成する検知スイッチ６１が取付けられ、これに設けた可動部６２が平坦部５ｂに設けた孔５ｃから上面に突出している。６３ａは電源５０の一方の配線と検知スイッチ６１の一方の端子に、６３ｂは検知スイッチ６１の他方の端子と切換スイッチ５１のコイル５６にそれぞれ接続された配線である。
【００２８】
いま、鍋収納部５内に炊飯用鍋４０を収納して電源５０を投入すると、炊飯用鍋４０のフランジ４２が検出スイッチ６１の可動部６２を圧下して検知スイッチ６１を閉成し、切換スイッチ５１のコイル５６に通電してその磁気作用により可動片５５を吸引し、炊飯用接点５３に接続する。
炊飯用鍋４０を内鍋収納部５から取出すと、可動部６２が上昇して検知スイッチ６１が開放されるので、切換スイッチ５１の可動片５５は再び煮物用接点５４に接続される。
【００２９】
図１０は鍋収納部５に煮物用鍋４５を収納した状態を示すものである。鍋収納部５内に煮物用鍋４５を収納すると、煮物用鍋４５のフランジ４７は上方に向って階段状に形成されているので、検知スイッチ６１の可動部６２より上方に位置し、これを圧下することはない。このため検知スイッチ６１は引続き開放状態に維持され、切換スイッチ５１の可動片５５は煮物用接点２４に接続されて煮物用制御系が形成されている。
【００３０】
図１１は検知手段６０の他の例を示す説明図である。
本例においては、鍋収納部５の前面側に設け平坦部５ｂの下面に検出手段６０を構成するリードスイッチ６４を設けると共に、炊飯用鍋４０のフランジ４２の下面にリードスイッチ６４と対向して永久磁石６７を設けたもので、リードスイッチ６４の一方の端子６６ａは電源５０に接続され、他方の端子６６ｂは切換スイッチ５１のコイル５６に接続されている。なお、リードスイッチ６４に代えて近接スイッチを設けてもよい。
【００３１】
いま、図１１に示すように、内鍋収納部５に炊飯用鍋４０を収納すると永久磁石６７の磁気作用によりリードスイッチ６４の可動接片６５ｂが吸引され、固定接片６５ａに接続されて回路を閉成し、切換スイッチ５１のコイル５６に通電してその可動片５５を炊飯用接点５３に接続し、炊飯用制御系を形成する。炊飯用鍋４０を取出すとリードスイッチ６４の可動接片６５ｂが固定接片６５ａから離れて回路を開放し、切換スイッチ５１の可動片５５は再び煮物用接点５４に接続される。
【００３２】
次に、図１２に示すように、鍋収納部５に煮物用鍋４５を収納すると、煮物用鍋４５のフランジ４７には永久磁石が設けられていないので、リードスイッチ６４は作動せず開放状態を継続する。このため、切換スイッチ５１の可動片５５は引続き煮物用接点５５に接続されている。
このように、本実施の形態においては、鍋収納部５に炊飯用鍋４０又は煮物用鍋４５を収納することにより、検知手段６０の作用によって制御部８は炊飯用制御パターン又は煮物用制御パターンに自動的に切換えられる。なお、検知手段６０によって検知した結果を例えば操作部９に表示させるようにしてもよく、これにより外部から確認することができる。
【００３３】
以上、内鍋収納部５に収納された炊飯用鍋４０又は煮物用鍋４５を判別して検知する検知手段６０及び検知手段６０と制御系との関係について説明したが、これらはその一例を示すものでこれに限定するものではなく、他の構造、方式を用いてもよい。
【００３４】
次に、上記のように構成した誘導加熱調理器により、炊飯及び惣菜等の煮物を行う場合の作用について説明する。
前述のように、制御部８には炊飯用制御パターンと煮物用制御パターンが設けられており、炊飯用制御パターンは、図１３に示すように、誘導加熱コイル６に通電して炊飯用鍋４０を発熱させて加熱し、炊飯用鍋４０の温度が１００℃近傍に達したとき（これは、底部に設けた温度センサ７によって検出される）は、連続的又は間欠的にその温度を維持し、時間Ｔを経過したときはその温度を下降させてほぼ７０℃程度で保温する従来の炊飯制御とほぼ同様の制御パターンが用いられる。
【００３５】
一方、煮物用制御パターンは、図１４に示すように、誘導加熱コイル６に通電して煮物用鍋４５を発熱させて煮物を加熱する。そして、煮物用鍋４５の温度が１００℃近傍（例えば、９５℃）に達したときは、連続的又は断続的にこの温度（９３℃〜９５℃）を維持し、時間ｔ（この時間はｔ＜Ｔであり、通常５分〜１０分程度）経過したときは煮込み工程が終了して、以後例えば８０℃〜８５℃の低温加熱工程に移行する制御パターンが用いられる。
【００３６】
調理物である白米を炊飯する場合は、白米と水が入れられた炊飯用鍋４０を鍋収納部５内に収納し、蓋体２を閉じて電源５０を投入する。これにより、検知手段６０が炊飯用鍋４０が収納されたことを検知し、前述のように切換スイッチ５１の可動片５５が炊飯用接点５３に接続される。ついで、操作部９の炊飯スイッチ９ａをＯＮして誘導加熱コイル６に通電すれば、誘導加熱コイル６は制御部８に設けた炊飯用制御パターンにしたがって制御され、炊飯を行う。
【００３７】
このとき、うまみ還元器のうまみ溜り２５には前述のようにうまみであるおねばが溜り、炊飯工程から保温工程に移行したときは、開閉弁２７が開いてうまみ溜り２５内のおねばをご飯に戻し、つやや粘りのあるおいしいご飯を炊くことができる。この場合、おかゆや炊き込みご飯などを炊く場合は、操作部９に設けたこれらに対応するボタンを操作することにより、炊飯制御パターンの一部が変更される。
【００３８】
次に、調理物である惣菜等の煮物を行う場合は、食材、水、調味料等が入れられた煮物用鍋４５を鍋収納部５内に収納し、蓋体２を閉じて電源５０を投入する。このとき、前述のように切換スイッチ５１の可動片５５は煮物用接点５４に接続されている。
ついで、操作部９の煮物スイッチ９ｄをＯＮして誘導加熱コイル６に通電すれば、誘導加熱コイル６は制御部８に設けた煮物用制御パターンによって制御され、煮物用鍋４５内の調理物を加熱し調理する。なお、調理物の種類によっては、操作部９に設けた調理物の種類に対応したスイッチ（図示せず）を操作することにより、煮物用制御パターンの一部が変更される。例えば、煮込時間や低温加熱の温度等を調理物に応じて自在に変化させる。
【００３９】
煮物の調理にあたり、加熱によってうまみ（煮汁）を含んだ蒸気が発生し、この蒸気は前述のようにうまみ還元器２０内に導かれ、煮汁と蒸気が分離して蒸気は蒸気抜き孔２９から外部に放出され、煮汁はうまみ溜り２５に溜る。そして、煮込み工程から低加熱工程に移行すると煮汁のおいしい成分が煮物内に戻り、味のよいおいしい煮物を調理することができる。
【００４０】
本実施の形態によれば、煮物を行う際は煮物専用の煮物用鍋４５を使用し、また、内鍋収納部５の開口部を覆う内鍋２ｃは、炊飯用内蓋と煮物用内蓋とを別々に設けた（両者を色変り等により区別できるようにすることが望ましい）ので、炊飯用鍋４０や蓋体２ｃに煮物の臭いがつくことがなく、おいしいご飯を炊くことができる。なお、内蓋２ｃを１個設け、使用の都度取外して清掃するようにしてもよい。また、蓋体２をヒンジ４により本体ケース１に開閉自在に取付けた場合を示したが、ヒンジ４を省略し、蓋体２を本体ケース１に着脱自在に設けても良い。このように構成することにより蓋体２の清掃がより容易になる。
【００４１】
［実施の形態２］
実施の形態１では、内鍋収納部５に収納した炊飯用鍋４０又は煮物用鍋４５を、両者のフランジ４２，４７の形状若しくは構造を変えることにより、検知スイッチ６１やリードスイッチ６４などの検知手段６０によりハード的に判別する場合を示したが、本実施の形態は、内鍋収納部５に収納された炊飯用鍋４０又は煮物用鍋４５をソフト的に判別するようにしたものである。
【００４２】
すなわち、図１５に示すように、白米等が入れられる炊飯用鍋４０又は惣菜等が入れられる煮物用鍋４５の素材を強磁性や弱磁性あるいは板厚等を変更し、それぞれ内鍋収納部５に収納して蓋体２を閉じ、誘導加熱コイル６に一定時間（ｔ₁）通電し、そのときの内鍋の温度を温度センサ７で検出する。そして、内鍋の温度が高い場合（ａ）は炊飯用鍋４０と判断し、内鍋の温度が低い場合（ｂ）は煮物用鍋４５と判断して、これに対応した制御系に切換えるようにしたものである。
【００４３】
また、図１６に示すように、炊飯用鍋４０又は煮物用鍋４５の素材を強磁性や弱磁性あるいは板厚等を変更し、それぞれ内鍋収納部５に収納して蓋体２を閉じ、誘導加熱コイル６に通電して内鍋の温度が所定の温度（ｃ）に達するまでの時間を計測し、この時間がｔ₂の場合は炊飯用鍋４０、ｔ₃の場合は煮物用鍋４５と判断し、これに対応した制御系に切換えるようにしたものである。
【００４４】
本実施の形態によれば、炊飯用鍋４０と煮物用鍋４５のフランジ４２，４７の形状を変える必要がなく、同じ形状のものを使用することができ、また、検知手段６０の如き機構を設けることがないため構造が簡単であり、これらによりコストを低減できるばかりでなく、ソフト的な手法により内鍋の種類を確実に判別することができる。
【００４５】
【発明の効果】
本発明は、１台の調理器に、炊飯用と煮物用の制御パターンを有し操作部により選択可能な制御部を備えると共に、蓋体にうまみ溜りを有するうまみ還元器を設けたので、おいしいご飯や煮物を調理することができ、便利で使い勝手のよい誘導加熱調理器を得ることができる。
【図面の簡単な説明】
【図１】本発明の実施の形態１に係る誘導加熱調理器の内鍋収納部に炊飯用鍋を収納した状態を示す縦断面図である。
【図２】図１の外観斜視図である。
【図３】図１の内鍋収納部に蓋体を開放して煮物用鍋を収納した状態を示す斜視図である。
【図４】図１の操作部の正面図である。
【図５】図１のうまみ還元器の縦断面図である。
【図６】煮物用鍋の一例を示す縦断面図である。
【図７】煮物用鍋を炊飯用鍋内に収納した状態を示す模式図である。
【図８】内鍋の検知手段と制御系との関係を示す説明図である。
【図９】内鍋の検知手段の一例の説明図である。
【図１０】内鍋の検知手段の一例の説明図である。
【図１１】内鍋の検知手段の他の例の説明図である。
【図１２】内鍋の検知手段の他の例の説明図である。
【図１３】炊飯用制御パターンの説明図である。
【図１４】煮物用制御パターンの説明図である。
【図１５】本発明の実施の形態２に係る内鍋の判別手段の説明図である。
【図１６】本発明の実施の形態２に係る内鍋の判別手段の説明図である。
【符号の説明】
１本体ケース、２蓋体、４ヒンジ、５内鍋収納部、６誘導加熱コイル、８制御部、９操作部、９ａ炊飯用スイッチ、９ｄ煮物用スイッチ、２０うまみ還元器、４０炊飯用鍋、４１本体部、４５煮物用鍋、４６本体部、５０電源、５１切換手段、６０蓋体の検出手段。[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an induction heating cooker, and more particularly, to an induction heating cooker that can cook boiled dishes such as rice and prepared dishes with one cooker (rice cooker).
[0002]
[Prior art]
When this electromagnetic induction heating device and the rice cooker main body can be separated from this conventional induction heating cooker and used as a rice cooker, the rice cooker main body is placed on the electromagnetic induction heating device and heated. When using as a heating device for other cooking, remove the rice cooker body from the electromagnetic induction heating device, cut off the electrical connection, and use a pan intended for another cooking on the electromagnetic induction heating device, etc. Is heated and cooked (see, for example, Patent Document 1).
[0003]
Moreover, it consists of the heating apparatus which heats by induction heating, and the some cooking container main body which can be selectively mounted in this heating apparatus, and one of the cooking container main bodies is for rice cooking, and this cooking container main body for rice cooking For the rice cooking, the first operation unit used for the cooking mode corresponding to the above is provided on the side surface of the heating device, and the second operation unit used for the cooking mode corresponding to the other cooking container body is provided on the upper surface of the heating device. There is one in which the second operation unit is hidden when the cooking container main body is placed (for example, see Patent Document 2).
[0004]
Furthermore, the main body, an inner pot that is detachably stored in the main body, a heating unit that heats rice and water contained in the inner pot, a control unit that controls the heating unit, and an operation for performing an input operation to the control unit A cooking switch for the rice cooking mode when cooking from raw rice, a normal heating switch for the normal heating mode for cooking other ingredients, etc., and output adjustment during normal heating There is a jar rice cooker provided with means (for example, see Patent Document 3).
[0005]
[Patent Document 1]
Japanese Utility Model Publication No. 63-108197 (page 3-6, FIG. 1 to FIG. 2)
[Patent Document 2]
Japanese Patent No. 3108956 (page 2-3, FIG. 1 to FIG. 6)
[Patent Document 3]
JP 2001-346684 A (page 2-3, FIG. 1 to FIG. 2)
[0006]
[Problems to be solved by the invention]
In the rice cooker described in Patent Document 1, the pot installed corresponding to the electromagnetic induction heating device is only a pot for cooking rice, and the cooking range is narrow and limited as the type of cooking is mainly rice cooking. Yes. In addition, when cooking other ingredients other than cooking rice, each time the cooking pot is removed from the electromagnetic induction heating device, the electrical connection is cut off, and a general-purpose pot containing other ingredients is heated by electromagnetic induction. Since it has to be mounted on the apparatus, it is very troublesome.
[0007]
The heating cooker described in Patent Document 2 requires a plurality of cooker bodies (pots) that can be selectively placed on the heating device, and when cooking rice or other ingredients, the heating device is used each time. Since the cooker body must be removed and replaced with another cooker body, it is cumbersome.
[0008]
The jar rice cooker of Patent Document 3 can cook rice and boiled food in one pot, but in particular, since there is no mechanism for reducing boiled soup that is a source of umami into a pot during boiled cooking, Cleaning is troublesome because of unsatisfactory taste or dirty with boiled juice.
[0009]
This invention was made | formed in order to solve said subject, and provided the control part which has a control pattern for rice cooking and boiled food in one cooker, and cooks the food in an inner pot in the case of cooking. An object of the present invention is to provide a convenient and easy-to-use induction heating cooker that automatically detects and switches the control pattern of the control unit.
[0010]
[Means for Solving the Problems]
An induction heating cooker according to the present invention includes an induction heating coil, an inner pot that is open at the top and generates heat by the induction heating coil, a lid that covers the opening of the inner pot so as to be openable and closable, and the induction heating coil. A main body case having a control unit for controlling and an operation unit for operating the control unit from the outside is provided, and the inner pot is constituted by an inner pot for cooking rice and an inner pot for boiled food, and is detachable from the lid The inner lid mounted on the rice cooker and the simmered inner lid, and the control unit has a control pattern for cooking and simmered rice, and can be selected by the operation unit , The lid body is provided with an umami reducing device having a steam vent hole communicating with the inside and the outside and an umami reservoir for returning the umami from the cooked food to the inner pot.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
[Embodiment 1]
1 is a longitudinal sectional view showing a state in which a rice cooking pan is stored in an inner pot storage portion of an induction heating cooker according to Embodiment 1 of the present invention, FIG. 2 is an external perspective view of FIG. 1, and FIG. It is a perspective view which shows the state which open | released the cover body in the inner pot storage part, and accommodated the simmered pot.
The induction heating cooker according to the present invention has a main body case 1 having an upper portion opened and an inner pot storage portion 5 formed therein, and one end attached to the main body case 1 via a hinge 4. The lid 2 that opens and closes the portion, the upper portion is opened and stored in the inner pot storage portion 5 and cooked white rice etc. 40 and the cooking pan 45 that cooks side dishes etc. (hereinafter, white rice etc. and side dishes etc. are combined) And sometimes cooked food).
[0012]
On the outer wall surface of the bottom of the inner pot storage section 5, an induction heating coil for cooking by cooking the rice cooking pot 40 and the boiled cooking pot 45 (hereinafter sometimes referred to as the inner pot) by electromagnetic induction action. 6 is provided, and a temperature sensor 7 for detecting the temperature of the inner pot is provided at substantially the center of the bottom.
[0013]
Moreover, the control part 8 which has the below-mentioned control pattern for rice cooking, the control pattern for simmered foods, etc. in the lower part of the inner pot accommodating part 5, and controls the emitted-heat amount, energization time, etc. of the electromagnetic induction coil 6 is provided. On the front side (hereinafter, the left side in the figure is referred to as the front side and the right side is referred to as the rear side), an operation unit 9 for operating the control unit 8 from the outside is provided. As shown in FIG. 4, the operation unit 9 includes a rice cooking switch 9a, a reservation switch 9b, a heat retention switch 9c, a boiled food switch 9d, a heating power adjustment switch 9e, a low temperature (heat retention) switch 9f, a display unit 9g, and the like. Yes. Reference numeral 10 denotes a cord reel provided on the lower rear surface side of the main body case 1.
[0014]
The lid 2 includes an upper lid 2a, a lower lid 2b, and an inner lid 2c that is detachably attached to the lower lid 2b. The inner lid 2c includes an inner lid for cooking rice and an inner lid for cooking. Further, a concave portion 3a for detachably mounting an umami reducing device 20 to be described later is provided on the upper surface of the upper lid 2a, and the upper lid 2a, the lower lid 2b, and the inner lid 2c penetrate through the front side of the concave portion 3a. And the through-hole 3b in which the connection part 23 of the umami reducer 20 is inserted is provided, and the sealing member 3c is interposed between the through-hole 3b and the connection part 23 of the umami reducer 20. A latch 11 is provided on the front side of the lid 2 and is locked to the case body 1 when the lid 2 is closed.
[0015]
As shown in FIG. 5, the umami reducing device 20 is formed of a horizontally long and substantially dish-shaped lower case 21 and an upper case 22 that covers the upper opening of the lower case 21. On the side, a bottomed cylindrical connecting portion 23 that is inserted into the through hole 3 b of the lid 2 is projected. Further, on the front side of the connecting portion 23, a hollow guide cylinder 24 is erected so as to communicate the inside of the umami reducing device 20 and the inner pot 40 and guide the steam containing umami into the umami reducing device 20. The bottom portion of the lower case 21 is formed on an inclined surface that descends toward the umami reservoir 25 formed in the connecting portion 23.
[0016]
An open / close valve 27 opens and closes a return hole 26 provided at the bottom of the guide tube 23. Reference numeral 28 denotes a lower barrier that is erected on the lower case 1 perpendicular to the flow direction of the steam (front-rear direction) at a substantially intermediate portion between the reservoir recess 25 and the rear side peripheral wall of the lower case 21, and has a central portion in the width direction. It is formed in a substantially square shape protruding rearward, and an opening (not shown) is formed between both ends and the peripheral wall.
[0017]
A steam vent hole 29 is provided on the rear surface side of the upper case 22, and a cylinder whose front surface side is substantially equal to the upper end portion of the guide tube 24 on the lower surface on the front surface side and whose rear surface side is located below the upper end portion of the guide tube 24. A first upper barrier 30 is provided. Further, a second upper barrier 31 is provided on the front side of the lower barrier 28 in a direction orthogonal to the flow direction of the vapor, and an opening 32 is formed in the upper part thereof. Reference numeral 33 denotes a third upper barrier provided between the second upper barrier 31 and the steam port 29.
In the figure, the upper case 22 is detachably attached to the lower case 21 by the hinge 34. However, the upper case 22 may be detachably attached to the lower case 21, as described above. By configuring, the umami reducing device 20 can be easily cleaned.
[0018]
In the umami reducing device 20 as described above, for example, when the rice cooking pot 40 in which white rice and water are put and stored in the inner pot storage unit 5 is heated by the induction heating coil 6 and the water boils, the umami (rice ball) ) Containing steam (hereinafter simply referred to as steam). At this time, since the internal pressure of the rice cooking pot 40 has risen, the on-off valve 27 of the umami reducer 20 is pushed up to close the return hole 26, so that the steam passes through the guide tube 24 and becomes an umami reducer. 20 is led. The vapor that has exited the guide tube 24 and collided with the first upper barrier 30 diffuses in the umami reducer 20 toward the vapor vent hole 29 as indicated by an arrow, and during this time, the second upper barrier 31 If the lower wall 28 and the third upper barrier 33 collide with each other, the steam is surely separated, and the steam is discharged to the outside through the steam vent hole 29, and the toe flows down along the bottom surface of the lower case 21. , Accumulated in the umami reservoir 25.
[0019]
When the heating is reduced and the internal pressure of the rice cooking pot 40 is lowered, the on-off valve 27 is lowered by its own weight and the weight of the rice bowl, and the return hole 26 is opened. As a result, the rice balls collected in the umami reservoir 25 fall into the cooking pot 40 through the return hole 26. When the rice ball returns to the rice in the cooking pot 40, the delicious ingredients contained in the rice ball are given to the rice, and it is possible to cook delicious rice that is glossy and sticky. In the case of boiled food, boiled soup plays the same role as rice balls.
In the above description, the case where the lid 2 is provided with the umami reducing device 20 shown in FIG. 5 has been described. However, the structure of the umami reducing device 20 is not limited to this, but is of another structure. May be.
[0020]
Referring again to FIG. 1, reference numeral 40 is made of a magnetic material, and is a rice cooking pot for cooking white rice or the like. And a flange 42 placed on the upper end 5a of the pan storage part 5.
45 (FIG. 3) is a simmered pan made of a magnetic material and used for cooking simmered foods such as side dishes other than rice. An example is shown in FIG.
[0021]
6 (a) has a main body portion 46 having a shape similar to that of the main body portion 41 of the rice cooking pot 40, and an upper end portion of the main body portion 46 outside the substantially same position as the flange 42 of the rice cooking pot 40. And a flange 47 formed in a step shape upward and outward.
[0022]
FIG. 6B shows another example of the simmered pan 45, and a substantially S-shaped handle 48 made of, for example, a heat-resistant resin is attached to the flange 47 of the inner pan having a shape substantially equal to that of the rice cooking pan 40. It is a thing. The handle 48 may be detachably attached to the flange 47 or may be fixed. By configuring the simmered pan 45 in this way, other cooking devices, for example, induction heating coils, can be cooked by placing the pan on the plate, or can be cooked directly with a gas stove. Further, after further cooking, it is possible to hold the handle 48 and store it in the inner pot storage portion 5 to perform only heat insulation. At this time, if the handle 48 is removed from the simmered pan 45 and the lid 2 is closed, long-time heat insulation is possible. In that case, a heat retention temperature control switch (not shown) may be provided in the operation unit 9 and set to a predetermined temperature.
[0023]
As mentioned above, although the example of the pan 45 for cooking was demonstrated, it is not limited to this, You may use the thing of another shape and a structure.
In addition, the outer diameter of the main body 46 of the simmered pan 45 is formed to be approximately equal to or slightly smaller than the inner diameter of the main body 41 of the rice cooking pan 40, and as shown in FIG. If 46 can be accommodated in the main-body part 41 of the rice cooking pot 40, it can pack compactly and is convenient for storage, transportation, etc.
[0024]
Moreover, although the rice cooking pot 40 and the stewed pot 45 can be distinguished by changing the shapes of the flanges 42 and 47 as described above, the material of the inner walls of the main body portions 41 and 46 of the inner pot is further selected. Change (for example, one of them is copper-plated), change the material (for example, the rice cooking pan 40 is formed of a ferromagnetic material, and the boiled pan 45 is formed of a weak magnetic material), the body portions 41 and 46 It can be specified by changing the inner wall color, changing the thickness of the inner pot (for example, making the thickness of the stewed pan 45 thicker than the thickness of the rice cooking pot 40), etc. There is no.
[0025]
Next, the detection means which detects and discriminate | determines the cooking pot 40 or the boiled pot 45 accommodated in the inner pot accommodating part 5 is demonstrated. FIG. 8 is an explanatory diagram showing an example of the relationship between the detection means and the control system.
One wire of the power source 50 is connected to a common contact 52 of a changeover switch 51 that is a means for switching between cooked rice and boiled food provided in the main body case 1, and the other wire is connected to the induction heating coil 6. Is provided with a rice cooking terminal 53 and a boiled food terminal 54, and the movable piece 55 is normally connected to a boiled food contact 54. The rice cooking contact 53 is connected to the induction heating coil 6 through the rice cooking switch 9a and the control unit 8 of the operation unit 9, and the boiled contact 54 is connected to the induction heating coil 6 through the boiled food switch 9d and the control unit 8 of the operation unit 9. It is connected to the.
[0026]
Further, the coil 56 provided on the rice cooking contact 53 side of the changeover switch 51 is connected to a power source 50, and a detection means 60 having a detection switch 61 that is normally open is provided in the circuit. .
When the rice cooking pot 40 is accommodated in the inner pot accommodating portion 5 of the induction heating cooker, the movable portion 62 of the detecting means 60 presses the contact piece of the detection switch 61 to close the circuit, and the coil 56 is energized. Then, the movable piece 55 of the changeover switch 51 is sucked and connected to the rice cooking contact 53 to form a rice cooking control system. When the rice cooking pan 40 is taken out, the circuit of the detection switch 61 is opened, and the movable piece 55 is connected to the boiled food contact 54 to form a boiled food control system. Further, when the simmered pan 45 is stored in the inner pot storage unit 5, the movable piece 62 of the detecting means 60 does not move, the movable piece 62 is maintained connected to the simmered contact 54, and the simmered control system is operated. It is formed.
[0027]
FIGS. 9 and 10 are explanatory views showing an example of the detection means 60, and FIG. 9 shows a state in which the rice cooking pot 40 is stored in the pot storage unit 5.
A flat portion 5b is provided at a lower level on the front side of the upper end portion 5a of the pot storage portion 5, and a detection switch 61 constituting the detection means 60 is attached to the lower surface of the flat portion 5b. Protrudes from the hole 5c provided in the flat portion 5b to the upper surface. 63 a is a wiring connected to one wiring of the power source 50 and one terminal of the detection switch 61, and 63 b is a wiring connected to the other terminal of the detection switch 61 and the coil 56 of the changeover switch 51.
[0028]
Now, when the rice cooking pot 40 is stored in the pot storage part 5 and the power supply 50 is turned on, the flange 42 of the rice cooking pot 40 presses down the movable part 62 of the detection switch 61 to close the detection switch 61 and switch. The coil 56 of the switch 51 is energized to attract the movable piece 55 by its magnetic action and connected to the rice cooking contact 53.
When the rice cooking pot 40 is taken out from the inner pot storage part 5, the movable part 62 is raised and the detection switch 61 is opened, so that the movable piece 55 of the changeover switch 51 is connected to the boiled food contact 54 again.
[0029]
FIG. 10 shows a state in which the simmered pan 45 is stored in the pan storage unit 5. When the simmering pan 45 is stored in the pan storage part 5, the flange 47 of the simmering pan 45 is formed in a stepped shape upward, so that it is located above the movable part 62 of the detection switch 61, There is no reduction. For this reason, the detection switch 61 is continuously maintained in the open state, and the movable piece 55 of the changeover switch 51 is connected to the boiled food contact 24 to form a boiled food control system.
[0030]
FIG. 11 is an explanatory view showing another example of the detecting means 60.
In this example, while providing the reed switch 64 which comprises the detection means 60 in the lower surface of the flat part 5b provided in the front side of the pan accommodating part 5, it faces the reed switch 64 in the lower surface of the flange 42 of the rice cooking pot 40. A permanent magnet 67 is provided, and one terminal 66 a of the reed switch 64 is connected to the power supply 50, and the other terminal 66 b is connected to the coil 56 of the changeover switch 51. A proximity switch may be provided instead of the reed switch 64.
[0031]
As shown in FIG. 11, when the rice cooking pot 40 is stored in the inner pot storage section 5, the movable contact piece 65b of the reed switch 64 is attracted by the magnetic action of the permanent magnet 67 and connected to the fixed contact piece 65a. Is closed, and the coil 56 of the changeover switch 51 is energized to connect the movable piece 55 to the rice cooking contact 53 to form a rice cooking control system. When the rice cooking pot 40 is taken out, the movable contact piece 65b of the reed switch 64 is separated from the fixed contact piece 65a to open the circuit, and the movable piece 55 of the changeover switch 51 is connected to the boiled food contact 54 again.
[0032]
Next, as shown in FIG. 12, when the simmered pan 45 is stored in the pan storage unit 5, the permanent magnet is not provided on the flange 47 of the simmered pan 45, so the reed switch 64 does not operate and is open. Continue. For this reason, the movable piece 55 of the changeover switch 51 is continuously connected to the boiled food contact 55.
Thus, in this Embodiment, the control part 8 is the control pattern for rice cooking, or the control pattern for boiled foods by the effect | action of the detection means 60 by accommodating the rice cooking pot 40 or the boiled food pan 45 in the pot storage part 5. FIG. Automatically switched to The result detected by the detection means 60 may be displayed on the operation unit 9, for example, and can be confirmed from the outside.
[0033]
As mentioned above, although the detection means 60 which discriminate | determines and detects the pot 40 for rice cooking accommodated in the inner pot accommodating part 5, or the detection means 60, and the relationship between a control system and these were demonstrated, these show the example. However, the present invention is not limited to this, and other structures and methods may be used.
[0034]
Next, an effect | action at the time of performing boiled foods, such as rice cooking and a side dish, with the induction heating cooking appliance comprised as mentioned above is demonstrated.
As described above, the control unit 8 is provided with the rice cooking control pattern and the boiled food control pattern, and the rice cooking control pattern energizes the induction heating coil 6 as shown in FIG. When the temperature of the rice cooking pot 40 reaches around 100 ° C. (this is detected by the temperature sensor 7 provided at the bottom), the temperature is continuously or intermittently maintained. When the time T elapses, a control pattern substantially the same as the conventional rice cooking control in which the temperature is lowered and kept at about 70 ° C. is used.
[0035]
On the other hand, as shown in FIG. 14, the boiled food control pattern energizes the induction heating coil 6 to heat the boiled food pan 45 and heats the boiled food. When the temperature of the simmered pan 45 reaches around 100 ° C. (for example, 95 ° C.), this temperature (93 ° C. to 95 ° C.) is maintained continuously or intermittently, and the time t (this time is t <T, usually about 5 to 10 minutes) When the elapse of time, the cooking process is terminated, and a control pattern is used for shifting to a low temperature heating process of, for example, 80 ° C. to 85 ° C.
[0036]
When cooking white rice, which is a cooked product, the rice cooking pot 40 containing white rice and water is stored in the pot storage unit 5, the lid 2 is closed, and the power supply 50 is turned on. Thereby, the detection means 60 detects that the rice cooking pot 40 has been stored, and the movable piece 55 of the changeover switch 51 is connected to the rice cooking contact 53 as described above. Next, when the rice cooking switch 9a of the operation unit 9 is turned on and the induction heating coil 6 is energized, the induction heating coil 6 is controlled according to the rice cooking control pattern provided in the control unit 8 and cooks rice.
[0037]
At this time, the umami reservoir 25 of the umami reducer stores umami rice balls as described above, and when the rice cooking process shifts from the rice cooking process to the heat retaining process, the on-off valve 27 is opened and the rice in the umami pool 25 is cooked. You can cook delicious and sticky rice. In this case, when cooking rice porridge, cooked rice, or the like, a part of the rice cooking control pattern is changed by operating buttons corresponding to these provided in the operation unit 9.
[0038]
Next, when cooking the prepared food such as prepared dishes, the stewed pot 45 containing ingredients, water, seasonings and the like is stored in the pot storage section 5, the lid 2 is closed, and the power supply 50 is turned on. throw into. At this time, the movable piece 55 of the changeover switch 51 is connected to the boiled contact 54 as described above.
Next, if the boiled food switch 9d of the operation unit 9 is turned on and the induction heating coil 6 is energized, the induction heating coil 6 is controlled by the boiled food control pattern provided in the control unit 8, and the food in the boiled food pan 45 is removed. Heat and cook. Depending on the type of cooked food, a part of the boiled food control pattern is changed by operating a switch (not shown) corresponding to the type of cooked food provided in the operation unit 9. For example, the cooking time, the temperature of low-temperature heating, etc. can be changed freely according to the food.
[0039]
In cooking the boiled food, steam containing umami (boiled soup) is generated by heating, and this steam is guided into the umami reducer 20 as described above, and the boiled juice and steam are separated, and the steam is discharged from the steam vent hole 29 to the outside. The soup is stored in the umami reservoir 25. And if it transfers to a low heating process from a stew process, the delicious component of a broth will return in a stew, and a delicious delicious stew can be cooked.
[0040]
According to the present embodiment, when cooking the simmered food, the simmered pan 45 dedicated to the simmered food is used, and the inner pot 2c covering the opening of the inner pot storage unit 5 includes the inner lid for cooking rice and the inner lid for simmered food. Are provided separately (it is desirable to be able to distinguish the two by color change or the like), so that the rice cooker 40 and the lid 2c do not smell of boiled food, and delicious rice can be cooked. Note that one inner lid 2c may be provided and removed and cleaned each time it is used. Further, although the case where the lid 2 is attached to the main body case 1 by the hinge 4 so as to be opened and closed is shown, the hinge 4 may be omitted, and the lid 2 may be detachably provided on the main body case 1. With this configuration, the lid 2 can be more easily cleaned.
[0041]
[Embodiment 2]
In Embodiment 1, the detection switch 61, the reed switch 64, and the like are detected by changing the shape or structure of the flanges 42 and 47 of the rice cooking pot 40 or the boiled pot 45 stored in the inner pot storage unit 5. Although the case where it discriminate | determined by the hardware by the means 60 was shown, this Embodiment discriminate | determines softly the pot 40 for rice cooking or the pan 45 for boiled food accommodated in the inner pot accommodating part 5. FIG. .
[0042]
That is, as shown in FIG. 15, the material of the cooking pot 40 in which white rice or the like is put or the simmered cooking pot 45 in which the prepared dishes are put is changed in ferromagnetic, weak magnetism, plate thickness, etc. The lid 2 is closed, the induction heating coil 6 is energized for a certain time (t ₁ ), and the temperature of the inner pot at that time is detected by the temperature sensor 7. And when the temperature of an inner pot is high (a), it judges that it is the cooking pot 40, and when the temperature of an inner pot is low (b), it judges that it is the pan for cooking 45, and it switches to the control system corresponding to this. It is a thing.
[0043]
In addition, as shown in FIG. 16, the material of the rice cooking pan 40 or the boiled pan 45 is changed to ferromagnetic, weak magnetism, plate thickness, etc., and each is stored in the inner pot storage unit 5 and the lid 2 is closed, The time from when the induction heating coil 6 is energized until the temperature of the inner pot reaches a predetermined temperature (c) is measured. When this time is t ₂ , the cooking pot 40, and when it is t ₃ , the cooking pot 45. And switching to a control system corresponding to this.
[0044]
According to the present embodiment, it is not necessary to change the shapes of the flanges 42 and 47 of the rice cooking pan 40 and the boiled pan 45, the same shape can be used, and a mechanism such as the detection means 60 is provided. Since it is not provided, the structure is simple, and not only can the cost be reduced by these, but also the type of the inner pot can be reliably determined by a soft method.
[0045]
【The invention's effect】
The present invention is provided with a control unit that has a control pattern for cooking rice and boiled food and can be selected by the operation unit in one cooker, and is provided with an umami reducer having an umami pool in the lid, which is delicious. Rice and boiled food can be cooked, and a convenient and convenient induction heating cooker can be obtained.
[Brief description of the drawings]
FIG. 1 is a longitudinal sectional view showing a state in which a rice cooking pot is stored in an inner pot storage portion of an induction heating cooker according to Embodiment 1 of the present invention.
2 is an external perspective view of FIG. 1. FIG.
FIG. 3 is a perspective view showing a state where a lid is opened in the inner pot storage part of FIG. 1 and a stewed pot is stored.
4 is a front view of the operation unit in FIG. 1; FIG.
FIG. 5 is a longitudinal sectional view of the umami reducer of FIG. 1;
FIG. 6 is a longitudinal sectional view showing an example of a boiled pan.
[Fig. 7] Fig. 7 is a schematic view showing a state in which a stewed pan is stored in a rice cooking pan.
FIG. 8 is an explanatory diagram showing the relationship between the inner pan detection means and the control system.
FIG. 9 is an explanatory diagram of an example of the inner pot detection means.
FIG. 10 is an explanatory diagram of an example of the inner pot detection means.
FIG. 11 is an explanatory diagram of another example of the inner pot detection means.
FIG. 12 is an explanatory diagram of another example of the inner pot detection means.
FIG. 13 is an explanatory diagram of a rice cooking control pattern.
FIG. 14 is an explanatory diagram of a boiled food control pattern.
FIG. 15 is an explanatory diagram of an inner pot discriminating means according to Embodiment 2 of the present invention.
FIG. 16 is an explanatory diagram of the inner pot discriminating means according to the second embodiment of the present invention.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Main body case, 2 Cover body, 4 Hinge, 5 Inner pan storage part, 6 Induction heating coil, 8 Control part, 9 Operation part, 9a Switch for rice cooking, 9d Boiled food switch, 20 Umami reducer, 40 Rice cooking pot, 41 body part, 45 pan for cooking, 46 body part, 50 power supply, 51 switching means, 60 detection means for lid.

Claims

An induction heating coil, an inner pot that is open at the top and generates heat by the induction heating coil, a lid that covers the opening of the inner pot so as to be openable and closable, a control unit that controls the induction heating coil, and the control unit A main body case having an operation unit operated from the outside,
The inner pot is composed of an inner pot for cooking rice and an inner pot for cooking, and an inner lid detachably attached to the lid is composed of an inner lid for cooking and an inner lid for cooking, The control unit has a control pattern for cooking rice and boiled food, and is configured to be selectable by the operation unit , and the steam vent hole communicating with the inside and outside of the lid and the umami from the cooked food are reduced to the inner pot. An induction heating cooker provided with an umami reducer having a pool.

Control unit, the induction heating cooker according to claim 1, further comprising a control pattern to boil the food in the inner bowl a predetermined time continuously or intermittently to.

Induction heating cooker according to claim 1, characterized in that varied the form of cooking pots and boiled for pan, color or material and the like.

The main body of the rice cooking pan and the main body of the boiled pan are formed in a similar shape, and the outer diameter of the main body of the boiled pan is substantially equal to or slightly smaller than the inner diameter of the main body of the rice cooking pan. The induction heating cooker according to claim 1 or 3 , wherein the induction heating cooker is formed.

The induction heating cooker according to any one of claims 1 to 4 , wherein the main body case is provided with a means for detecting an inner pot for discriminating between a pot for cooking rice and a pot for cooking.

6. The induction heating cooker according to claim 5, further comprising a display unit for displaying a discrimination result of the detection means.

The detection unit and the control unit are electrically connected, and the control unit controls the induction heating coil with a control pattern corresponding to the discrimination result between the rice cooking pan and the boiled pan by the detection unit. The induction heating cooker according to claim 1 or 5 .

Between the operation portion and the power supply, on the basis of the determination result detector, the induction heating cooker according to claim 1, characterized in that a switching means for switching the control unit for cooking or for simmered .

The induction heating coil is energized for a predetermined time to detect the temperature of the inner pan, or the induction heating coil is energized to detect the energization time when the inner pan reaches the predetermined temperature, and based on these detection results induction heating cooker of claim 1, wherein the determining whether pan boiled pots for cooking.