JP3685002B2

JP3685002B2 - Cooker

Info

Publication number: JP3685002B2
Application number: JP2000138651A
Authority: JP
Inventors: 博富永; 憲二服部; 裕二藤井; 大象緒方
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2000-05-11
Filing date: 2000-05-11
Publication date: 2005-08-17
Anticipated expiration: 2020-05-11
Also published as: JP2001319771A

Description

【０００１】
【発明の属する技術分野】
本発明は、加熱調理器に関するものである。
【０００２】
【従来の技術】
以下に従来構成の加熱調理器について説明する。
【０００３】
図５は従来構成の加熱調理器のブロック図である。図５において１は第１の加熱部である左コンロを加熱する第１の加熱手段、２は第２の加熱部である右コンロを加熱する第２の加熱手段、３ａは第３の加熱部であるロースターを加熱するための第３の加熱手段、４は商用電源、５は商用電源から上記加熱手段への電源供給をオンオフする電源スイッチである。電源スイッチ５は２極で構成され電源スイッチの第１の極５ａは第１の加熱手段１と第３の加熱手段３ａの単極をオンオフし、電源スイッチの第２の極５ｂは第２の加熱手段２の単極をオンオフしている。６は第１の加熱手段１をオンオフする第１の操作スイッチ、７は第２の加熱手段２をオンオフする第２の操作スイッチ、８は第３の加熱手段をオンオフする第３の操作スイッチである。
【０００４】
以上のように構成された従来構成の加熱調理器では、調理器の主電源は電源スイッチ５でオンオフし、第１の操作スイッチ６、第２の操作スイッチ７、および第３の操作スイッチ８からの操作により、それぞれの加熱部の加熱動作が行われていた。
【０００５】
【発明が解決しようとする課題】
しかしながら上記従来の構成では、電源スイッチの第１の極５ａに接続されている第１の加熱手段１と第３の加熱手段３ａを同時加熱した場合、電源スイッチの第１の極５ａに流れる電流は第１の加熱手段１のと第３の加熱手段３ａに流れる電流の総和となるので、電源スイッチの第２の極５ｂに流れる電流に対して非常に大きくなる。電源スイッチ５の定格は第１の極５ａに流れる最大電流を満足しなければならないため、電源スイッチ５は定格の大きい高価なものを使用しなければならなかった。
【０００６】
また、定格の小さい小型の電源スイッチ５を使用するため、第１の加熱手段１または第３の加熱手段３ａの最大出力を低下させると、高火力調理に必要な絶対火力が得られず、調理性能が低下するという問題があった。
【０００７】
また、定格の小さい小型の電源スイッチ５を使用するため、第１の加熱手段１と第３の加熱手段３ａいずれか一方のみを選択加熱する方法とすると、第１の加熱手段１と第３の加熱手段３ａを同時使用することができないため、使い勝手が悪くなるという課題があった。
【０００８】
本発明は上記課題を解決するもので、各加熱部の同時使用が可能で各加熱部それぞれに必要な加熱出力が得られて、かつ定格が小さく低コストで小型の電源スイッチが使用可能な加熱調理器を提供することを目的とする。
【０００９】
【課題を解決するための手段】
上記目的を達成するために本発明は、第１の加熱部を加熱する第１の加熱手段と、第２の加熱部を加熱する第２の加熱手段と、第３の加熱部を加熱する第３、第４の加熱手段と、商用電源から前記第１〜第４の加熱手段への電源供給をオンオフする電源スイッチを備え、前記電源スイッチは２極以上の構成からなり、前記第１、第３の加熱手段は前記電源スイッチの第１の極を介して商用電源から電源供給され、前記第２、第４の加熱手段は前記電源スイッチの第２の極を介して商用電源から電源供給される構成とした構成とするものである。
【００１０】
これにより、第３の加熱部へ供給される電流が電源スイッチの第１の極と第２の極に分散されるため、第３の加熱部を高火力としても、３つの加熱部を同時使用する場合の電源スイッチの第１の極と第２の極に流れる最大電流のバランスがよく、定格が小さく安価な小型の電源スイッチを使用することが可能となる。
【００１１】
【発明の実施の形態】
請求項１に記載の加熱調理器は、商用電源から加熱手段への電源供給をオンオフし第１の極と第２の極を有する少なくとも２極以上の構成からなる電源スイッチと、第１の加熱コイルと商用電源を直流に変換する第１の整流手段と前記直流電流を高周波電流に変換して前記第１の加熱コイルに供給する第１のインバータ回路とを有し前記電源スイッチの第１の極を介して商用電源から電源供給され第１の加熱部を加熱する第１の加熱手段と、第２の加熱コイルと商用電源を直流に変換する第２の整流手段と前記直流電流を高周波電流に変換して前記第２の加熱コイルに供給する第２のインバータ回路とを有し前記電源スイッチの第２の極を介して商用電源から電源供給され第２の加熱部を加熱する第２の加熱手段と、庫内の上方に設置される第３の加熱手段と前記庫内の下方に設置される第４の加熱手段を有するロースターとを備え、前記ロースターの第３の加熱手段は前記電源スイッチの第１の極を介して商用電源から電源供給され、前記ロースターの第４の加熱手段は前記電源スイッチの第２の極を介して商用電源から電源供給される構成とするものである。
【００１２】
これにより、ロースターへ供給される電流が電源スイッチの第１の極と第２の極に分散されるため、ロースターを高火力としても、３つの加熱部を同時使用する場合の電源スイッチの第１の極と第２の極に流れる最大電流のバランスがよく、定格が小さく安価な小型の電源スイッチを使用することが可能となる。
【００１３】
また、高火力なロースターの両面焼き構成が容易に実現でき、電源スイッチを小型化してかつ、両面加熱や片面加熱の調理が自在にできるようになる。
【００１４】
請求項２に記載の加熱調理器は、第１の加熱手段と第３の加熱手段の出力総和を、第２の加熱手段と第４の加熱手段の出力総和と略同等となるように構成するものである。
【００１５】
これにより、電源スイッチの第１の極と第２の極に流れる最大電流がほぼ等しくなるように第３の加熱手段と第４の加熱手段の出力を設定することで、電源スイッチの片側の極に対するスペックがオーバースペックとなることなく、もっとも効率よく定格の小さい安価な小型の電源スイッチを使用することができる。
【００１６】
請求項３に記載の加熱調理器は、第３の加熱手段と第４の加熱手段を単独または連動して動作させる操作スイッチを備えた構成とするものである。
【００１７】
これにより、一つのスイッチ操作で最大火力での調理や、連続通電で中間火力の調理が可能となる。また、第３の加熱手段と第４の加熱手段の形状や取り付け構成によっては、加熱面積の切り替えや、加熱部分の切り替えが可能となり、電源スイッチを小型としてかつ、使い勝手を向上させることが可能となる。
【００１８】
請求項４に記載の加熱調理器は、第１のインバータを駆動する第１の駆動手段と、前記第１の駆動手段を制御する第１の制御手段と、前記第２のインバータを駆動する第２の駆動手段と、前記第２の駆動手段を制御する第２の制御手段と、第３の加熱手段を駆動する第３の駆動手段と、第４の加熱手段を駆動する第４の駆動手段を備え、前記第３、第４の駆動手段は前記第１の制御手段からの信号に基づき前記第３、第４の加熱手段を駆動する構成とするものである。
【００１９】
これにより、誘導加熱構成である第１の加熱手段を制御する第１の制御手段にて、第１の加熱手段と電源スイッチを同極とする第３の加熱手段と、第１の加熱手段とは電源スイッチを異極とする第４の加熱手段を制御するので、制御手段を一つのマイクロコンピュータにて構成できると共に、第３の加熱手段と第４の加熱手段の同時加熱や片側加熱、交互加熱やデューティー制御による火力設定が自在に行うことができ、電源スイッチを小型化してかつ使い勝手を向上させることができる。
【００２０】
請求項５に記載の加熱調理器は、第１の制御手段と第３の駆動手段の基準電位は第１の整流手段の２次側の低電位側と同電位とし、第４の駆動手段の基準電位は第２の整流手段の２次側の低電位側と同電位とする構成とするものである。
【００２１】
これにより、電源スイッチの異なる極に接続された第３の加熱手段と第４の加熱手段をマイクロコンピュータ等で制御する際の、基板実装上の絶縁距離等の制約を最小限とすることができ、電源スイッチを小型化して第３の加熱部をマイコン制御する場合の基板の小型化を図ることができる。
【００２２】
請求項６に記載の加熱調理器は、第３の加熱部の温度を検出する温度検知手段を備え、第１の制御手段は、前記温度検知手段からの検知温度に基づき前記第３の加熱手段および第４の加熱手段の出力を制御する構成とするものである。
【００２３】
これにより、電源スイッチを小型化して第３の加熱部を電源スイッチの異なる極に互いに接続された２つの加熱手段で構成しても、第３の加熱部の温度を一定に制御したり、第３の加熱部のオート調理を実現することが可能となる。
【００２４】
【実施例】
（実施例１）
以下本発明の第１の実施例について、図面を参照しながら説明する。
【００２５】
図１において、１は第１の加熱部である左コンロを加熱する第１の加熱手段、２は第２の加熱部である右コンロを加熱する第２の加熱手段、３は第３の加熱部であるロースターである。ロースター３の加熱出力は図２ａに示すように２つの加熱手段より構成されており、３ａはロースター３の庫内上方に設置された第３の加熱手段、３ｂはロースター３の庫内下方に設置された第３の加熱手段である。４は商用電源、５は商用電源から前記加熱手段への電源供給をオンオフする電源スイッチである。
【００２６】
電源スイッチ５は２極で構成され電源スイッチの第１の極５ａは第１の加熱手段１と第３の加熱手段３ａの単極をオンオフし、電源スイッチの第２の極５ｂは第２の加熱手段２と第４の加熱手段３ｂの単極をオンオフしている。６は第１の加熱手段１をオンオフする第１の操作スイッチ、７は第２の加熱手段２をオンオフする第２の操作スイッチ、８は第３の加熱手段３ａおよび第４の加熱手段３ｂをオンオフする第３の操作スイッチである。
【００２７】
以上のように構成された加熱調理器についてその動作を説明する。
【００２８】
調理器の主電源は電源スイッチ５でオンオフし、左コンロを加熱する場合は第１の操作スイッチ６を操作して第１の加熱手段１を通電し、右コンロを加熱する場合は、第２の操作スイッチ７を操作して第２の加熱手段２を通電する。また、ロースター３を加熱する場合は、第３の操作スイッチ８を操作して第３の加熱手段３ａおよび第４の加熱手段３ｂを通電する。第３の操作スイッチ８は３つのコース選択が可能となっており、両面焼きを選択すると第３の加熱手段３ａをオンオフする第３の操作スイッチＡ８ａと第４の加熱手段３ｂをオンオフする第３の操作スイッチＢ８ｂが同時にオンされて、第３の加熱手段３ａと第４の加熱手段３ｂをそれぞれ通電する。また、上面焼きを選択すると第３の操作スイッチＡ８ａのみがオンされて、第３の加熱手段３ａが通電される。
【００２９】
全ての加熱手段を同時に通電したときに電源スイッチ５に流れる電流は、電源スイッチの第１の極５ａには、第１の加熱手段１に流れる電流Ｉ１と第３の加熱手段３ａに流れる電流Ｉ３の総和であるＩａの電流が流れる。また電源スイッチの第２の極５ｂには、第２の加熱手段２に流れる電流Ｉ２と第４の加熱手段３ｂに流れる電流Ｉ４の総和であるＩｂの電流が流れる。Ｉａ＞Ｉｂの場合は電源スイッチ５は定格Ｉａ以上のものを選定すればよく、電源スイッチ５の経路にあたる配線や、コネクタの温度上昇についてもＩａで規格を満足すればよい。Ｉａ＝Ｉｂとなるように第３の加熱手段３ａの電流Ｉ３と第４の加熱手段３ｂの電流Ｉ４を調整すると、一方の極の電源スイッチ５の定格がオーバースペックとなることなく、さらに効率よく定格の小さい安価で小型の電源スイッチ５を使用することが可能となる。
【００３０】
なお、本実施例では第３の加熱部をロースターとして説明したが、第３のコンロでもよく、第３のコンロは左、右、中央いずれのコンロでもよい。第３の加熱部をコンロとする場合は図２ｂに示すように、第３の加熱手段３ａをコンロの内側に配設し、第３の加熱手段３ａの外周に第４の加熱手段３ｂを配設すると、加熱面積を切り替えることが可能となる。
【００３１】
また、図２ｃに示すように、第３の加熱手段３ａと第４の加熱手段３ｂを平行にスパイラル状に巻いた形状とすることで、単位面積あたりの加熱出力を切り替えることが可能となる。
【００３２】
また、図２ｄに示すように第３の加熱手段を左側、第４の加熱手段を右側に配設することで、半面加熱と全面加熱の切り替えが可能となる。
【００３３】
以上のように本実施例によれば、第３の加熱部へ供給される電流が電源スイッチの第１の極５ａと第２の極５ｂに分散されるため、第３の加熱部を高火力としても、３つの加熱部を同時使用する場合の電源スイッチの第１の極５ａと第２の極５ｂに流れる最大電流のバランスがよく、定格が小さく安価な小型の電源スイッチを使用することが可能となる。
【００３４】
また、電源スイッチの第１の極５ａと第２の極５ｂに流れる最大電流がほぼ等しくなるように第３の加熱手段３ａと第４の加熱手段３ｂの出力を設定することで、電源スイッチ５の片側の極に対するスペックがオーバースペックとなることなく、もっとも効率よく定格の小さい安価な小型の電源スイッチを使用することが可能となる。
【００３５】
また、第３の操作スイッチ８により、一つのスイッチ操作で最大火力での調理や、連続通電で中間火力の調理が可能となる。また、第３の加熱手段と第４の加熱手段の形状や取り付け構成によっては、加熱面積の切り替えや、加熱部分の切り替えが可能となる。
【００３６】
また、第３の加熱部をロースター構成とすると、高火力なロースターの両面焼き構成が容易に実現でき、電源スイッチを小型化してかつ、両面加熱や片面加熱の調理が自在にできるようになる。
【００３７】
（実施例２）
以下、本発明の第２の実施例について、図面を参照しながら説明する。
【００３８】
図３において、１〜５は第１の実施例と同じであり説明を省略する。
【００３９】
１ａは第１の加熱コイル、１ｂは第１の整流手段、１ｃは第１のインバータ回路で１ａ、１ｂ、１ｃにより第１の加熱手段１を構成している。２ａは第２の加熱コイル、２ｂは第２の整流手段、２ｃは第２のインバータ回路で２ａ、２ｂ、２ｃにより第２の加熱手段２を構成している。９は第１の加熱手段１を駆動する第１の駆動手段、１０は第１の駆動手段を制御する第１の制御手段、１１は第２の加熱手段２を駆動する第２の駆動手段、１２は第２の駆動手段を制御する第２の制御手段、１３は第３の加熱手段３ａを駆動する第３の駆動手段、１４は第４の加熱手段３ｂを駆動する第４の駆動手段、１５は第３の加熱部であるロースターの庫内温度を検知する温度検知手段である。第１の制御手段１０および第２の制御手段１２はそれぞれマイクロコンピュータにて構成されている。また、第３の駆動手段１３および第４の駆動手段はそれぞれリレーとリレー駆動回路にて構成されている。
【００４０】
以上のように構成された加熱調理器についてその動作を説明する。
【００４１】
調理器の主電源は電源スイッチ５でオンオフしている。左コンロを加熱する場合は第１の制御手段１０は第１の駆動手段９を動作させ、第１のインバータ回路１ｃを動作させることにより第１の加熱コイル１ａに高周波電流を供給し、第１の加熱コイル１ａ上方にある負荷鍋を加熱する。また、右コンロを加熱する場合は左コンロと同様に、第２の制御手段１２は第２の駆動手段１１を動作させ、第２のインバータ回路２ｃを動作させることにより第２の加熱コイル２ａに高周波電流を供給し、第２の加熱コイル２ａ上方にある負荷鍋を加熱する。
【００４２】
また、ロースター３を加熱する場合は第１の制御手段１０は第３の駆動手段１３と第４の駆動手段１４を動作させ、第３の加熱手段３ａと第４の加熱手段３ｂをそれぞれ通電させる。ロースター３の通電パターンは調理メニューに応じて、第３の加熱手段３ａと第４の加熱手段３ｂを同時通電する両面加熱、あるいは第３の加熱手段３ａまたは第４の加熱手段３ｂを単独で通電する片面加熱、あるいは所定時間ごとに第３の加熱手段３ａと第４の加熱手段３ｂを交互に通電する交互加熱となるように、第１の制御手段１０により制御される。また、ロースター３の火力設定に応じて第１の制御手段１０は第３の加熱手段３ａと第４の加熱手段３ｂをデューティー制御による加熱制御を行う。
【００４３】
また、温度検知手段１５からの信号により、ロースター３庫内の温度が一定に保つように第１の制御手段１０は第３の加熱手段３ａと第４の加熱手段３ｂの加熱出力を制御する。また、ロースター３庫内の温度が所定温度以上となると第１の制御手段１０は第３の加熱手段３ａと第４の加熱手段３ｂの加熱出力を停止させる。また、ロースター３のオート調理時には温度検知手段１５からの信号に基づいて第１の制御手段１０は第３の加熱手段３ａと第４の加熱手段３ｂをオンオフする。
【００４４】
全ての加熱手段を同時に通電したときに電源スイッチ５に流れる電流は、第１の極５ａには、第１の加熱手段に流れる電流Ｉ１と第３の加熱手段３ａに流れる電流Ｉ３の総和であるＩａの電流が流れる。また第２の極５ｂには、第２の加熱手段に流れる電流Ｉ２と第４の加熱手段３ｂに流れる電流Ｉ４の総和であるＩｂの電流が流れる。Ｉａ＞Ｉｂの場合は電源スイッチ５は定格Ｉａ以上のものを選定すればよく、電源スイッチ５の経路にあたる配線や、コネクタの温度上昇についてもＩａで規格を満足すればよい。
【００４５】
なお、本実施例では第３の加熱部をロースターとして説明したが、第３のコンロである中央コンロでもよい。また、第１の加熱手段１と第２の加熱手段２は左右いずれのコンロでもかまわない。
【００４６】
以上のように本実施例によれば、誘導加熱構成である第１の加熱手段１を制御する第１の制御手段１０にて、第１の加熱手段１と電源スイッチ５を同極とする第３の加熱手段３ａと、第１の加熱手段１とは電源スイッチ５を異極とする第４の加熱手段３ｂを制御するので、制御手段を一つのマイクロコンピュータにて構成できると共に、第３の加熱手段３ａと第４の加熱手段３ｂの同時加熱や片側加熱、交互加熱やデューティー制御による火力設定が自在に行うことができる。
【００４７】
また、温度検知手段１５からの信号により、電源スイッチを小型化して第３の加熱部３を電源スイッチ５の異なる極に互いに接続された２つの加熱手段で構成しても、第３の加熱部３の温度を一定に制御したり、第３の加熱部３のオート調理を実現することが可能となる。
【００４８】
（実施例３）
以下、本発明の第３の実施例について、図面を参照しながら説明する。
【００４９】
図３および動作は第２の実施例と同じであり、説明を省略する。
【００５０】
図４において、１３ａは第３の加熱手段３ａの電流をオンオフする第１のリレー、１３ｂは第１のリレーを駆動する第１のリレー駆動回路で１３ａと１３ｂで第３の駆動手段１３は構成されている。１４ａは第４の加熱手段３ｂの電流をオンオフする第２のリレー、１４ｂは第２のリレーを駆動する第２のリレー駆動回路で１４ａと１４ｂで第４の駆動手段１４は構成されている。
【００５１】
第１の制御手段１０と第１のリレー駆動回路１３ｂの基準電位は、第１の整流手段１ｂの２次側の低電位側である「１ｂ−」と同電位となるように接続されている。また、第２のリレー駆動回路１４ｂの基準電位は、第２の整流手段１ｂの２次側の低電位側である「２ｂ−」と同電位となるように接続されており、第１の制御手段１０からの制御信号はフォトカプラ１６を介して第２のリレー駆動回路１４ｂに送信されている。
【００５２】
以上のように構成された加熱調理器においては、電源スイッチの第１の極５ａを介して電源供給される回路と、第２の極５ｂを介して電源供給される回路とは異なるプリント配線板上に実装されている。フォトカプラ１６は電源スイッチの第２の極５ｂ側の回路を実装しているプリント配線板上に実装されており、第１の制御手段１０からリード線とコネクタを介してフォトカプラ１６に接続されている。コネクタおよびフォトカプラ１６の１次側と電源スイッチ５の第２の極５ｂ側の制御回路は異極間となるので、絶縁距離は充電部と同等の距離が必要とされるが、フォトカプラ１６の２次側と第４の駆動手段１４までの接続は周辺回路に対して小信号系回路の絶縁距離で十分である。
【００５３】
なお、フォトカプラ１６は電源スイッチの第１の極５ａ側の回路を実装しているプリント配線板上に実装されても、同様の効果が得られる。
【００５４】
以上のように本実施例によれば、ロースター３を高火力としてかつ、電源スイッチ５を小型化できる上に、第４の駆動手段１４の基準電位を第２の整流手段２ｂと同電位とすることにより、基板実装上の絶縁距離の制約を最小限とすることができ、基板面積の小型化を図ることができる。
【００５５】
以上のように本実施例によれば、電源スイッチ５の異なる極に接続された第３の加熱手段３ａと第４の加熱手段３ｂを一つの制御手段で制御する場合に、第４の駆動手段１４の基準電位を第２の整流手段２ｂの２次側の低電位側と同電位とすることにより、基板実装上の絶縁距離等の制約を最小限とすることができ、電源スイッチ５を小型化して第３の加熱部３をマイコン制御する場合の基板の小型化を図ることができる。
【００５６】
【発明の効果】
以上のように、請求項１記載の発明によれば、第３の加熱部へ供給される電流が電源スイッチの第１の極と第２の極に分散されるため、第３の加熱部を高火力としても、３つの加熱部を同時使用する場合の電源スイッチの第１の極と第２の極に流れる最大電流のバランスがよく、定格が小さく安価な小型の電源スイッチを使用することが可能となる。
【００５７】
また、高火力なロースターの両面焼き構成が容易に実現でき、電源スイッチを小型化してかつ、両面加熱や片面加熱の調理が自在にできるようになる。
【００５８】
また、請求項２記載の発明によれば、電源スイッチの第１の極と第２の極に流れる電流の最大値がほぼ等しくなるように第３の加熱手段と第４の加熱手段の出力を設定することで、電源スイッチの片側の極に対するスペックがオーバースペックとなることなく、もっとも効率よく定格の小さい安価な小型の電源スイッチを使用することが可能となる。
【００５９】
また、請求項３記載の発明によれば、一つのスイッチ操作で最大火力での調理や、連続通電で中間火力の調理が可能となる。また、第３の加熱手段と第４の加熱手段の形状や取り付け構成によっては、加熱面積の切り替えや、加熱部分の切り替えが可能となり、電源スイッチを小型としてかつ、使い勝手を向上させることが可能となる。
【００６０】
また、請求項４記載の発明によれば、誘導加熱構成である第１の加熱手段を制御する第１の制御手段にて、第１の加熱手段と電源スイッチを同極とする第３の加熱手段と、第１の加熱手段とは電源スイッチを異極とする第４の加熱手段を制御するので、制御手段を一つのマイクロコンピュータにて構成できると共に、第３の加熱手段と第４の加熱手段の同時加熱や片側加熱、交互加熱やデューティー制御による火力設定が自在に行うことができ、電源スイッチを小型化してかつ使い勝手を向上させることができる。
【００６１】
また、請求項５記載の発明によれば、電源スイッチの異なる極に接続された第３の加熱手段と第４の加熱手段をマイクロコンピュータ等で制御する際の、基板実装上の絶縁距離等の制約を最小限とすることができ、電源スイッチを小型化してかつ、第３の加熱部をマイコン制御する場合の基板の小型化を図ることができる。
【００６２】
また、請求項６記載の発明によれば、電源スイッチを小型化して第３の加熱部を電源スイッチの異なる極に互いに接続された２つの加熱手段で構成しても、第３の加熱部の温度を一定に制御したり、第３の加熱部のオート調理を実現することが可能となる。
【図面の簡単な説明】
【図１】本発明の第１の実施例における加熱調理器を示すブロック図
【図２】同、第３の加熱部の例を示す図
【図３】本発明の第２の実施例における加熱調理器を示すブロック図
【図４】本発明の第３の実施例における加熱調理器を示すブロック図
【図５】従来例における誘導加熱調理器を示すブロック図
【符号の説明】
１第１の加熱手段
１ａ第１の加熱コイル
１ｂ第１の整流手段
１ｃ第１のインバータ回路
２第２の加熱手段
２ａ第２の加熱コイル
２ｂ第２の整流手段
２ｃ第２のインバータ回路
３第３の加熱部
３ａ第３の加熱手段
３ｂ第４の加熱手段
４商用電源
５電源スイッチ
５ａ電源スイッチの第１の極
５ｂ電源スイッチの第２の極
６第１の操作スイッチ
７第２の操作スイッチ
８第３の操作スイッチ
８ａ第３の操作スイッチＡ
８ｂ第３の操作スイッチＢ
９第１の駆動手段
１０第１の制御手段
１１第２の駆動手段
１２第２の制御手段
１３第３の駆動手段
１３ａ第１のリレー
１３ｂ第１のリレー駆動手段
１４第４の駆動手段
１４ａ第２のリレー
１４ｂ第２のリレー駆動手段
１５温度検知手段
１６フォトカプラ[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a heating cooker.
[0002]
[Prior art]
A conventional cooking device will be described below.
[0003]
FIG. 5 is a block diagram of a conventional cooking device. In FIG. 5, 1 is the first heating means for heating the left stove which is the first heating section, 2 is the second heating means for heating the right stove which is the second heating section, and 3a is the third heating section. 3 is a third heating means for heating the roaster, 4 is a commercial power source, and 5 is a power switch for turning on / off the power supply from the commercial power source to the heating means. The power switch 5 is composed of two poles. The first pole 5a of the power switch turns on and off the single poles of the first heating means 1 and the third heating means 3a, and the second pole 5b of the power switch is the second pole. The single pole of the heating means 2 is turned on / off. 6 is a first operation switch for turning on / off the first heating means 1, 7 is a second operation switch for turning on / off the second heating means 2, and 8 is a third operation switch for turning on / off the third heating means. is there.
[0004]
In the heating cooker having the conventional configuration configured as described above, the main power source of the cooker is turned on / off by the power switch 5, and the first operation switch 6, the second operation switch 7, and the third operation switch 8 are used. By the above operation, the heating operation of each heating unit was performed.
[0005]
[Problems to be solved by the invention]
However, in the above-described conventional configuration, when the first heating means 1 and the third heating means 3a connected to the first pole 5a of the power switch are simultaneously heated, the current flowing through the first pole 5a of the power switch Is the sum of the currents flowing through the first heating means 1 and the third heating means 3a, and is very large with respect to the current flowing through the second pole 5b of the power switch. Since the rating of the power switch 5 must satisfy the maximum current flowing through the first pole 5a, the power switch 5 must be an expensive one with a large rating.
[0006]
Moreover, since the small power switch 5 with a small rating is used, if the maximum output of the first heating means 1 or the third heating means 3a is reduced, the absolute heating power required for high-heat cooking cannot be obtained, and cooking There was a problem that the performance deteriorated.
[0007]
Further, since the small power switch 5 having a small rating is used, if only one of the first heating unit 1 and the third heating unit 3a is selectively heated, the first heating unit 1 and the third heating unit 3a are selected. Since the heating means 3a cannot be used at the same time, there is a problem that usability deteriorates.
[0008]
The present invention solves the above-described problem, and can be used simultaneously with each heating unit, the heating output necessary for each heating unit can be obtained, and a small power switch can be used with a small rating and low cost. The purpose is to provide a cooker.
[0009]
[Means for Solving the Problems]
In order to achieve the above object, the present invention provides a first heating unit for heating the first heating unit, a second heating unit for heating the second heating unit, and a second heating unit for heating the third heating unit. 3. A fourth heating means and a power switch for turning on / off power supply from a commercial power source to the first to fourth heating means, wherein the power switch has a configuration of two or more poles, and the first, first, The third heating means is supplied with power from the commercial power supply via the first pole of the power switch, and the second and fourth heating means are supplied with power from the commercial power supply via the second pole of the power switch. The configuration is such that
[0010]
As a result, the current supplied to the third heating unit is distributed to the first and second poles of the power switch. Therefore, even if the third heating unit is set to high thermal power, the three heating units are used simultaneously. In this case, it is possible to use a small-sized power switch that has a good balance between the maximum currents flowing in the first and second poles of the power switch and has a small rating and is inexpensive.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
The heating cooker according to claim 1, wherein a power switch having a configuration of at least two or more poles having a first pole and a second pole by turning on / off the power supply from the commercial power source to the heating means, and the first heating A first rectifying means for converting a coil and a commercial power source into a direct current; and a first inverter circuit for converting the direct current into a high-frequency current and supplying the same to the first heating coil. A first heating unit which is supplied with power from a commercial power source via a pole and heats the first heating unit; a second heating coil; a second rectifying unit which converts the commercial power source into a direct current; A second inverter circuit that converts the power into the second heating coil and supplies the second heating coil with power supplied from a commercial power source through the second pole of the power switch to heat the second heating unit Heating means and installed in the upper part of the cabinet 3 and a roaster having a fourth heating means installed in the lower part of the cabinet, and the third heating means of the roaster is powered from a commercial power supply via the first pole of the power switch. is supplied, the fourth heating unit of the roaster is to a configuration that will be power supplied from a commercial power source via a second pole of the power switch.
[0012]
Thus, since the current supplied to the roaster is distributed to the first pole and the second pole of the power switch, the first power switch in the case where the three heating units are used simultaneously even when the roaster is set to high thermal power. It is possible to use a small-sized power switch that has a good balance between the maximum current flowing in the first and second electrodes and a small rating and is inexpensive.
[0013]
In addition, a high-heat-powered roaster double-sided baking configuration can be easily realized, the power switch can be downsized, and double-sided heating or single-sided heating cooking can be freely performed.
[0014]
The heating cooker according to claim 2 is configured such that the total output of the first heating unit and the third heating unit is substantially equal to the total output of the second heating unit and the fourth heating unit. Is.
[0015]
As a result, the outputs of the third heating means and the fourth heating means are set so that the maximum currents flowing in the first pole and the second pole of the power switch are substantially equal, so that the poles on one side of the power switch Therefore, it is possible to use an inexpensive small-sized power switch having a low rating most efficiently.
[0016]
According to a third aspect of the present invention, there is provided a cooking device comprising an operation switch for operating the third heating means and the fourth heating means independently or in conjunction with each other.
[0017]
Thereby, cooking with maximum thermal power by one switch operation and cooking with intermediate thermal power by continuous energization becomes possible. In addition, depending on the shape and mounting configuration of the third heating means and the fourth heating means, it is possible to switch the heating area and the heating part, and to reduce the size of the power switch and improve the usability. Become.
[0018]
The heating cooker according to claim 4 , wherein the first driving means for driving the first inverter , the first control means for controlling the first driving means, and the second driving means for driving the second inverter. 2 driving means, second control means for controlling the second driving means, third driving means for driving third heating means, and fourth driving means for driving fourth heating means The third and fourth driving means are configured to drive the third and fourth heating means based on a signal from the first control means.
[0019]
Thus, in the first control means for controlling the first heating means having the induction heating configuration, the first heating means and the third heating means having the same polarity as the power switch, the first heating means, Controls the fourth heating means having a power switch of a different polarity, so that the control means can be constituted by one microcomputer, and the third heating means and the fourth heating means can be simultaneously heated, one-sided heating, alternating The heating power can be set freely by heating or duty control, and the power switch can be downsized and the usability can be improved.
[0020]
In the cooking device according to claim 5 , the reference potential of the first control means and the third drive means is the same as the low potential side of the secondary side of the first rectifying means, and the fourth drive means The reference potential is set to the same potential as the low potential side on the secondary side of the second rectifying means.
[0021]
As a result, when the third heating means and the fourth heating means connected to different poles of the power switch are controlled by a microcomputer or the like, restrictions such as an insulation distance on the substrate mounting can be minimized. In this case, it is possible to reduce the size of the substrate when the power switch is downsized and the third heating unit is controlled by the microcomputer.
[0022]
The cooking device according to claim 6 , further comprising a temperature detection means for detecting the temperature of the third heating unit, wherein the first control means is based on the detected temperature from the temperature detection means. And it is set as the structure which controls the output of a 4th heating means.
[0023]
Thus, even if the power switch is downsized and the third heating unit is composed of two heating means connected to different poles of the power switch, the temperature of the third heating unit can be controlled to be constant, It is possible to realize automatic cooking of the heating unit 3.
[0024]
【Example】
(Example 1)
Hereinafter, a first embodiment of the present invention will be described with reference to the drawings.
[0025]
In FIG. 1, 1 is a first heating means for heating the left stove which is the first heating section, 2 is a second heating means for heating the right stove which is the second heating section, and 3 is a third heating. It is a roaster that is a part. The heating output of the roaster 3 is composed of two heating means as shown in FIG. 2a, 3a is the third heating means installed above the interior of the roaster 3 and 3b is installed below the interior of the roaster 3. 3rd heating means. 4 is a commercial power source, and 5 is a power switch for turning on / off the power supply from the commercial power source to the heating means.
[0026]
The power switch 5 is composed of two poles. The first pole 5a of the power switch turns on and off the single poles of the first heating means 1 and the third heating means 3a, and the second pole 5b of the power switch is the second pole. The single poles of the heating means 2 and the fourth heating means 3b are turned on and off. 6 is a first operation switch for turning on and off the first heating means 1, 7 is a second operation switch for turning on and off the second heating means 2, and 8 is a third heating means 3a and a fourth heating means 3b. It is the 3rd operation switch which turns on and off.
[0027]
The operation of the cooking device configured as described above will be described.
[0028]
The main power supply of the cooker is turned on / off by the power switch 5, and when the left stove is heated, the first operation switch 6 is operated to energize the first heating means 1 and when the right stove is heated, the second The second heating means 2 is energized by operating the operation switch 7. When the roaster 3 is heated, the third operation switch 8 is operated to energize the third heating means 3a and the fourth heating means 3b. The third operation switch 8 can select three courses. When double-side baking is selected, the third operation switch A8a for turning on / off the third heating means 3a and the third heating switch 3b for turning on / off the third heating means 3b are provided. Are simultaneously turned on to energize the third heating means 3a and the fourth heating means 3b, respectively. When top baking is selected, only the third operation switch A8a is turned on and the third heating means 3a is energized.
[0029]
When all the heating means are energized at the same time, the current that flows through the power switch 5 flows through the first pole 5a of the power switch at the current I1 that flows through the first heating means 1 and the current I3 that flows through the third heating means 3a. A current Ia which is the sum of the currents flows. In addition, a current Ib that is a sum of a current I2 flowing through the second heating unit 2 and a current I4 flowing through the fourth heating unit 3b flows through the second pole 5b of the power switch. In the case of Ia> Ib, the power switch 5 may be selected to have a rating Ia or higher, and the wiring corresponding to the path of the power switch 5 and the temperature rise of the connector may satisfy the standard at Ia. If the current I3 of the third heating means 3a and the current I4 of the fourth heating means 3b are adjusted so that Ia = Ib, the rating of the power switch 5 on one pole does not become overspec, and more efficiently It is possible to use an inexpensive and small-sized power switch 5 having a small rating.
[0030]
In the present embodiment, the third heating unit has been described as a roaster, but a third stove may be used, and the third stove may be any of the left, right, and center stoves. When the third heating unit is a stove, as shown in FIG. 2b, the third heating means 3a is arranged inside the stove, and the fourth heating means 3b is arranged on the outer periphery of the third heating means 3a. If provided, the heating area can be switched.
[0031]
Further, as shown in FIG. 2c, the heating output per unit area can be switched by forming the third heating means 3a and the fourth heating means 3b in a spiral shape in parallel.
[0032]
Further, as shown in FIG. 2d, the third heating means is disposed on the left side and the fourth heating means is disposed on the right side, so that switching between half-surface heating and full-surface heating is possible.
[0033]
As described above, according to the present embodiment, the current supplied to the third heating unit is distributed to the first pole 5a and the second pole 5b of the power switch. Even when three heating units are used at the same time, it is possible to use a small-sized power switch that has a good balance between the maximum currents flowing through the first pole 5a and the second pole 5b of the power switch and has a small rating and is inexpensive. It becomes possible.
[0034]
Further, by setting the outputs of the third heating means 3a and the fourth heating means 3b so that the maximum currents flowing through the first pole 5a and the second pole 5b of the power switch are substantially equal, the power switch 5 Therefore, it is possible to use an inexpensive small-sized power switch having the smallest and most efficient rating without causing the specification of the pole on one side to be over-spec.
[0035]
In addition, the third operation switch 8 enables cooking with maximum thermal power by one switch operation and cooking with intermediate thermal power by continuous energization. Further, depending on the shapes and mounting configurations of the third heating means and the fourth heating means, it is possible to switch the heating area or the heating part.
[0036]
Further, when the third heating unit has a roaster configuration, a high-heat-power roaster double-sided baking configuration can be easily realized, and the power switch can be downsized and cooking on both sides or single-sided heating can be performed freely.
[0037]
(Example 2)
The second embodiment of the present invention will be described below with reference to the drawings.
[0038]
In FIG. 3, reference numerals 1 to 5 are the same as those in the first embodiment, and a description thereof will be omitted.
[0039]
Reference numeral 1a denotes a first heating coil, 1b denotes a first rectifying means, 1c denotes a first inverter circuit, and the first heating means 1 is constituted by 1a, 1b and 1c. 2a is a second heating coil, 2b is a second rectifying means, 2c is a second inverter circuit, and the second heating means 2 is constituted by 2a, 2b and 2c. 9 is a first driving means for driving the first heating means 1, 10 is a first control means for controlling the first driving means, 11 is a second driving means for driving the second heating means 2, 12 is a second control means for controlling the second drive means, 13 is a third drive means for driving the third heating means 3a, 14 is a fourth drive means for driving the fourth heating means 3b, Reference numeral 15 denotes temperature detection means for detecting the internal temperature of the roaster serving as the third heating unit. The first control means 10 and the second control means 12 are each constituted by a microcomputer. The third driving means 13 and the fourth driving means are each constituted by a relay and a relay driving circuit.
[0040]
The operation of the cooking device configured as described above will be described.
[0041]
The main power supply of the cooker is turned on / off by the power switch 5. When heating the left stove, the first control means 10 operates the first drive means 9 and operates the first inverter circuit 1c to supply a high frequency current to the first heating coil 1a. The load pan above the heating coil 1a is heated. Further, when heating the right stove, the second control means 12 operates the second drive means 11 and operates the second inverter circuit 2c in the same manner as the left stove, thereby causing the second heating coil 2a to operate. A high frequency current is supplied to heat the load pan located above the second heating coil 2a.
[0042]
When the roaster 3 is heated, the first control means 10 operates the third driving means 13 and the fourth driving means 14 to energize the third heating means 3a and the fourth heating means 3b, respectively. . Depending on the cooking menu, the energization pattern of the roaster 3 is a double-sided heating in which the third heating means 3a and the fourth heating means 3b are energized simultaneously, or the third heating means 3a or the fourth heating means 3b is energized independently. It is controlled by the first control means 10 so as to be single-sided heating or alternating heating in which the third heating means 3a and the fourth heating means 3b are alternately energized every predetermined time. Further, the first control means 10 controls the heating of the third heating means 3a and the fourth heating means 3b by duty control according to the heating power setting of the roaster 3.
[0043]
Further, the first control means 10 controls the heating output of the third heating means 3a and the fourth heating means 3b so as to keep the temperature in the roaster 3 chamber constant by a signal from the temperature detection means 15. Further, when the temperature in the roaster 3 chamber becomes a predetermined temperature or higher, the first control means 10 stops the heating outputs of the third heating means 3a and the fourth heating means 3b. Further, during the automatic cooking of the roaster 3, the first control means 10 turns on and off the third heating means 3a and the fourth heating means 3b based on a signal from the temperature detection means 15.
[0044]
The current flowing through the power switch 5 when all the heating means are energized simultaneously is the sum of the current I1 flowing through the first heating means and the current I3 flowing through the third heating means 3a at the first pole 5a. A current Ia flows. In addition, a current Ib that is a sum of a current I2 flowing through the second heating unit and a current I4 flowing through the fourth heating unit 3b flows through the second pole 5b. In the case of Ia> Ib, the power switch 5 may be selected to have a rating Ia or higher, and the wiring corresponding to the path of the power switch 5 and the temperature rise of the connector may satisfy the standard at Ia.
[0045]
In the present embodiment, the third heating unit is described as a roaster, but a central stove that is a third stove may be used. The first heating means 1 and the second heating means 2 may be either left or right stove.
[0046]
As described above, according to the present embodiment, in the first control means 10 for controlling the first heating means 1 having the induction heating configuration, the first heating means 1 and the power switch 5 have the same polarity. Since the third heating means 3a and the first heating means 1 control the fourth heating means 3b with the power switch 5 having a different polarity, the control means can be constituted by one microcomputer, The heating means can be freely set by simultaneous heating, one-side heating, alternate heating or duty control of the heating means 3a and the fourth heating means 3b.
[0047]
Even if the power switch is downsized by the signal from the temperature detection means 15 and the third heating unit 3 is composed of two heating units connected to different poles of the power switch 5, the third heating unit 3 can be controlled to be constant, or automatic cooking of the third heating unit 3 can be realized.
[0048]
(Example 3)
Hereinafter, a third embodiment of the present invention will be described with reference to the drawings.
[0049]
FIG. 3 and the operation are the same as those in the second embodiment, and a description thereof will be omitted.
[0050]
In FIG. 4, 13a is a first relay for turning on and off the current of the third heating means 3a, 13b is a first relay drive circuit for driving the first relay, and 13a and 13b are the third drive means 13. Has been. 14a is a second relay for turning on and off the current of the fourth heating means 3b, 14b is a second relay drive circuit for driving the second relay, and the fourth drive means 14 is constituted by 14a and 14b.
[0051]
The reference potentials of the first control means 10 and the first relay drive circuit 13b are connected to have the same potential as “1b−” which is the low potential side of the secondary side of the first rectifying means 1b. . The reference potential of the second relay drive circuit 14b is connected so as to be the same potential as “2b−”, which is the low potential side of the secondary side of the second rectifying means 1b, and the first control is performed. The control signal from the means 10 is transmitted to the second relay drive circuit 14b via the photocoupler 16.
[0052]
In the heating cooker configured as described above, the printed circuit board is different from the circuit supplied with power through the first pole 5a of the power switch and the circuit supplied with power through the second pole 5b. Implemented above. The photocoupler 16 is mounted on a printed wiring board on which a circuit on the second pole 5b side of the power switch is mounted, and is connected to the photocoupler 16 from the first control means 10 via a lead wire and a connector. ing. Since the control circuit on the primary side of the connector and the photocoupler 16 and the control circuit on the second pole 5b side of the power switch 5 are different polarities, the insulation distance is required to be the same as that of the charging unit. For the connection from the secondary side to the fourth driving means 14, the insulation distance of the small signal system circuit is sufficient with respect to the peripheral circuit.
[0053]
The same effect can be obtained even when the photocoupler 16 is mounted on a printed wiring board on which a circuit on the first pole 5a side of the power switch is mounted.
[0054]
As described above, according to the present embodiment, the roaster 3 has a high heating power and the power switch 5 can be miniaturized, and the reference potential of the fourth driving means 14 is set to the same potential as the second rectifying means 2b. As a result, the restriction on the insulation distance on the substrate mounting can be minimized, and the substrate area can be reduced.
[0055]
As described above, according to this embodiment, when the third heating means 3a and the fourth heating means 3b connected to different poles of the power switch 5 are controlled by one control means, the fourth driving means is used. The reference potential of 14 is set to the same potential as the low potential side of the secondary side of the second rectifying means 2b, so that restrictions such as insulation distance on the substrate mounting can be minimized, and the power switch 5 can be made compact. Therefore, it is possible to reduce the size of the substrate when the third heating unit 3 is controlled by a microcomputer.
[0056]
【The invention's effect】
As described above, according to the first aspect of the present invention, the current supplied to the third heating unit is distributed to the first pole and the second pole of the power switch. Even with high thermal power, it is possible to use a small-sized power switch that has a good balance between the maximum current flowing in the first and second poles of the power switch when using three heating units simultaneously, and has a small rating and is inexpensive. It becomes possible.
[0057]
In addition, a high-heat-powered roaster double-sided baking configuration can be easily realized, the power switch can be downsized, and double-sided heating or single-sided heating cooking can be freely performed.
[0058]
According to the second aspect of the invention, the outputs of the third heating means and the fourth heating means are set so that the maximum values of the currents flowing through the first pole and the second pole of the power switch are substantially equal. By setting, it is possible to use an inexpensive small-sized power switch with the lowest rating most efficiently without the specification for the pole on one side of the power switch becoming an over-spec.
[0059]
Further, according to the invention described in claim 3, cooking with maximum thermal power can be performed with one switch operation, and cooking with intermediate thermal power can be performed with continuous energization. In addition, depending on the shape and mounting configuration of the third heating means and the fourth heating means, it is possible to switch the heating area and the heating part, and to reduce the size of the power switch and improve the usability. Become.
[0060]
According to the fourth aspect of the present invention, in the first control means for controlling the first heating means having the induction heating configuration, the third heating having the same polarity as the first heating means and the power switch. Since the means and the first heating means control the fourth heating means having a power switch of a different polarity, the control means can be constituted by one microcomputer, and the third heating means and the fourth heating means The heating power can be freely set by simultaneous heating, one-side heating, alternate heating or duty control of the means, and the power switch can be downsized and the usability can be improved.
[0061]
According to the invention described in claim 5, when the third heating means and the fourth heating means connected to different poles of the power switch are controlled by a microcomputer or the like, the insulation distance on the substrate mounting, etc. The restrictions can be minimized, the power switch can be miniaturized, and the substrate can be miniaturized when the third heating unit is controlled by a microcomputer.
[0062]
According to the invention described in claim 6 , even if the power switch is downsized and the third heating unit is constituted by two heating means connected to different poles of the power switch, It becomes possible to control the temperature to be constant or to realize automatic cooking of the third heating unit.
[Brief description of the drawings]
FIG. 1 is a block diagram showing a cooking device according to a first embodiment of the present invention. FIG. 2 is a diagram showing an example of a third heating unit. FIG. 3 is a diagram showing heating according to a second embodiment of the present invention. FIG. 4 is a block diagram showing a heating cooker in a third embodiment of the present invention. FIG. 5 is a block diagram showing an induction heating cooker in a conventional example.
DESCRIPTION OF SYMBOLS 1 1st heating means 1a 1st heating coil 1b 1st rectification means 1c 1st inverter circuit 2 2nd heating means 2a 2nd heating coil 2b 2nd rectification means 2c 2nd inverter circuit 3 2nd 3 heating section 3a 3rd heating means 3b 4th heating means 4 commercial power supply 5 power switch 5a 1st pole of power switch 5b 2nd pole of power switch 6 1st operation switch 7 2nd operation switch 8 Third operation switch 8a Third operation switch A
8b Third operation switch B
9 1st drive means 10 1st control means 11 2nd drive means 12 2nd control means 13 3rd drive means 13a 1st relay 13b 1st relay drive means 14 4th drive means 14a 1st Second relay 14b Second relay driving means 15 Temperature detecting means 16 Photocoupler

Claims

A power switch having a configuration of at least two or more poles having a first pole and a second pole by turning on / off power supply from the commercial power source to the heating means, and a first heating coil and a first power source that converts the commercial power source into direct current Rectifying means and a first inverter circuit that converts the direct current into a high frequency current and supplies the first heating coil to the first heating coil, and is supplied with power from a commercial power source through a first pole of the power switch . A first heating unit for heating one heating unit; a second heating coil; a second rectifying unit for converting a commercial power source into a direct current; and converting the direct current into a high-frequency current to form the second heating coil. A second inverter circuit for supplying power, a second heating means for heating the second heating unit which is supplied with power from a commercial power supply via the second pole of the power switch, and is installed above the interior of the cabinet. The third heating means and the lower part in the storage A roaster having a fourth heating unit installed, the third heating means of the roaster is power supplied from a commercial power source via a first pole of the power switch, the fourth heating before Symbol roaster The means is a heating cooker configured to be supplied with power from a commercial power supply via the second pole of the power switch.

The cooking device according to claim 1, wherein the output sum of the first heating means and the third heating means is substantially equal to the output sum of the second heating means and the fourth heating means.

The cooking device according to claim 1 or 2, further comprising an operation switch for operating the third heating means and the fourth heating means independently or in conjunction with each other.

A first driving means for driving the first inverter, the first and the first control means for controlling the drive means, second drive means for driving the second inverter, said second driving means A second control means for controlling the third heating means, a third driving means for driving the third heating means, and a fourth driving means for driving the fourth heating means, wherein the third and fourth driving means are provided. The heating cooker according to any one of claims 1 to 3 , wherein the third and fourth heating means are driven based on a signal from the first control means.

The reference potential of the first control means and the third driving means is the same as that of the low potential side on the secondary side of the first rectifying means, and the reference potential of the fourth driving means is the secondary potential of the second rectifying means. The heating cooker according to claim 4, wherein the same potential as the low potential side is set.

Temperature detection means for detecting the temperature of the third heating unit is provided, and the first control means controls the outputs of the third heating means and the fourth heating means based on the detected temperature from the temperature detection means. The cooking device according to claim 4 or 5 .