JP2004162936A - Heating cooker - Google Patents

Heating cooker Download PDF

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Publication number
JP2004162936A
JP2004162936A JP2002326341A JP2002326341A JP2004162936A JP 2004162936 A JP2004162936 A JP 2004162936A JP 2002326341 A JP2002326341 A JP 2002326341A JP 2002326341 A JP2002326341 A JP 2002326341A JP 2004162936 A JP2004162936 A JP 2004162936A
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Japan
Prior art keywords
superheated steam
hot air
heating
generator
heating chamber
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JP2002326341A
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Japanese (ja)
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JP4334201B2 (en
Inventor
Keisuke Hara
圭祐 原
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Sharp Corp
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Sharp Corp
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Abstract

<P>PROBLEM TO BE SOLVED: To prevent dew condensation found at the circumference of an overheated steam discharge port and an inner face of a heating chamber, when the overheated steam is cooled by a cooked material in a heating cooker for heating and cooking the cooked material by overheated steam. <P>SOLUTION: An air blower 20 sucks the air in the heating chamber 11 from a suction port 31 and discharges the air to an upper hot air generating device 23. The air is heated to be the hot air by an upper heater 40 mounted on the upper hot air generating device 23 and blown out from an upper hot air blowout port 30. Here, an overheated steam discharge nozzle 42 is mounted to discharge the overheated steam into the upper hot air generating device 23. Accordingly, an air temperature at the circumference of the overheated steam discharge port 42a can be kept to be higher than an air temperature of the heating chamber 11. Further as the overheated steam is efficiently mixed with the hot air, the high temperature can be kept even when the overheated steam is sent into the heating chamber 11. <P>COPYRIGHT: (C)2004,JPO

Description

【0001】
【発明の属する技術分野】
本発明は、被調理物の加熱調理を行う加熱調理器に関する。特に100°C以上の過熱蒸気により被調理物の加熱調理を行う加熱調理器に関する。
【0002】
【従来の技術】
飽和水蒸気を更に加熱した100°C以上の過熱蒸気によって、食品等の被調理物の加熱調理を行う加熱調理器がよく知られている。この加熱調理器においては、飽和水蒸気発生装置にて、給水タンク等から供給された水で飽和水蒸気を生成し、この飽和水蒸気を過熱蒸気発生装置にて更に加熱して、過熱蒸気を生成する。この過熱蒸気を、被調理物を収容した加熱室内に供給して、加熱調理を行う。加熱室内の温度が、被調理物に応じた所定の温度になり、被調理物に適した加熱時間が経過すると、過熱蒸気の供給が停止され、調理が完了する。
【0003】
過熱蒸気を使用することにより、被調理物内の水分の蒸発を防止して、しっとりとした仕上りに調理することが可能である。また、過熱蒸気は空気よりも熱伝達率が高いので、調理時間を短縮することができるとともに、加熱室内が無酸素状態に近くなり、被調理物の酸化を低減することが可能である。
【0004】
従来の過熱蒸気を使用した加熱調理器の構造については、過熱蒸気を加熱室内に直接供給するものが提案されている(特許文献1参照)。
【0005】
【特許文献1】
特開平9−4849号公報
【0006】
【発明が解決しようとする課題】
過熱蒸気発生装置で生成された過熱蒸気の温度は、当然のことながら加熱室内の気温より高い。特許文献1記載のような加熱調理器では、過熱蒸気が加熱室内に供給されると、相対的に温度が低い加熱室の内面や過熱蒸気の吐出口周辺、特に吐出ノズル、被調理物で過熱蒸気が冷却されて結露する。この結露により加熱室の内面や吐出ノズル等で発生した水滴が飛散して被調理物に付着したり、被調理物の表面で結露すると、被調理物が十分に加熱できなかったり、被調理物の表面が水っぽくなったりするなどして、仕上りが悪くなるという問題が生じる。さらに、加熱室の内面での結露は、汚れの原因となりたいへん不衛生であるとともに、清掃のための手間が増える。
【0007】
本発明は上記の点に鑑みなされたものであり、過熱蒸気により被調理物の加熱調理を行う加熱調理器において、過熱蒸気の吐出口周辺や加熱室の内面、被調理物で過熱蒸気が冷却されて結露することを抑え、過熱蒸気による優れた加熱効率を発揮す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】
上記の課題を解決するため、本発明は、被調理物が収容される加熱室と、それのみでも加熱調理が可能な熱風を加熱室に供給する熱風発生装置と、水を飽和水蒸気に変化させる飽和水蒸気発生装置と、飽和水蒸気を加熱して過熱蒸気を発生させる過熱蒸気発生装置とを備え、前記過熱蒸気により被調理物の加熱調理を行う加熱調理器において、前記過熱蒸気の吐出ノズルを、前記熱風発生装置内に配設した。
【0009】
この構成によれば、過熱蒸気の吐出口周辺の気温を、加熱室の気温よりも高い温度に維持することができる。また、過熱蒸気は熱風と効率良く混合されるので、加熱室内に送り込まれても高温が維持される。その結果、過熱蒸気の吐出口周辺や加熱室の内面、被調理物で過熱蒸気が冷却されて結露することを抑えることが可能である。さらに、過熱蒸気自体の温度低下が抑えられることで、過熱蒸気による優れた加熱効率を実現することが可能である。
【0010】
また、本発明では、前記過熱蒸気の前記吐出ノズルを、前記熱風発生装置内のヒータ近傍に、該吐出ノズルの吐出口が位置するように配設した。
【0011】
この構成によれば、過熱蒸気を更に加熱でき、過熱蒸気発生装置で発生させた過熱蒸気よりも高い温度の過熱蒸気を生成することできる。その結果、更に高い温度での加熱が可能となり、効率の良い加熱調理が可能である。
【0012】
また、本発明では、前記過熱蒸気の前記吐出ノズルを、前記加熱室内における、前記熱風発生装置からの熱風吹き出し部近傍に、前記吐出口が位置するように配設した。
【0013】
この構成によれば、過熱蒸気を熱風に効率良く混合して高温を維持することができ、過熱蒸気の吐出口を直接熱風に晒すことができる。その結果、過熱蒸気の吐出口周辺での結露を、さらに抑えることが可能である。
【0014】
また、本発明では、前記過熱蒸気の前記吐出口近傍に、蒸気偏向板を設けた。
【0015】
この構成によれば、過熱蒸気が被調理物に直接当たることを防ぎ、被調理物周辺の領域に過熱蒸気を拡散させて送り込むことができる。その結果、被調理物の加熱ムラを少なくすることが可能である。また、不必要な焼け焦げを防ぐことが可能である。
【0016】
また、本発明では、前記過熱蒸気発生装置において、前記過熱蒸気の前記吐出口の径を絞ることによって、過熱蒸気の吐出速度を向上させた。
【0017】
この構成によれば、過熱蒸気を被調理物まで届かせることができる。また、被調理物を局部的に加熱することができる。その結果、調理時間の短縮や消費電力の低減が可能となり、被調理物の所望の部分に、意図的に焦げ目を付けるといった仕上りを実現することが可能である。
【0018】
また、本発明では、前記飽和水蒸気発生装置と、前記過熱蒸気発生装置が、一体に形成されているものとした。
【0019】
この構成によれば、部品の表面積が小さくなるので、熱の放散を少なくすることができる。また、これらを各々別個の装置として設ける必要がないので、部品点数を削減することが可能である。その結果、加熱調理器のエネルギー効率を向上することが可能となる。また、コストダウンや構造の簡素化、部品占有スペースの低減が可能となる。
【0020】
また、本発明では、前記加熱調理装置において、複数の前記熱風発生装置が配設されているものとした。
【0021】
この構成によれば、熱風及び過熱蒸気を相異なる複数の方向から被調理物に当てることができる。また、熱風及び過熱蒸気をより短時間で、加熱室内の広い範囲に送り込むことができる。その結果、被調理物を加熱ムラなく、効率よく調理することが可能である。また、加熱室内全体の加熱ムラを抑えることができるので、加熱室内の広い範囲にわたって被調理物が置かれている場合でも、効率良く調理することが可能である。そして、様々な被調理物、様々な調理法に対応することが可能である。
【0022】
【発明の実施の形態】
以下、本発明の実施形態を図に基づき説明する。
【0023】
図1は、本発明の第1の実施形態に係る加熱調理器の正面図にして、透視図法で表現したものである。図2は、図1に示す加熱調理器の概略断面図である。加熱調理器1は、直方体状の筐体10を有する。筐体10の内部には、直方体状の加熱室11が設けられる。加熱室11の上下は、天井壁12及び底面壁13で構成され、四周のうち三方は、奥内側壁14、左内側壁15、及び右内側壁16で構成される。四周の残り一方は、開閉自在な扉17により構成される。加熱室11の各壁部及び扉17には、断熱対策が施されている。
【0024】
奥内側壁14の外側には、送風装置20が設置される。送風装置20は、ファンケーシング21の中にファン22を配置し、このファン22をモータ(図示せず)で回転させる。ファンケーシング21は、天井壁12の外側に設けた上部熱風発生装置23に接続する。
【0025】
上部熱風発生装置23は、加熱室11に向かって開口する上部熱風吹き出し部30を有する。また、加熱室11の奥内側壁14には、送風装置20の吸い込み部31が設けられる。上部熱風吹き出し部30及び吸い込み部31は、小孔の集合からなる。
【0026】
上部熱風発生装置23の中には、上ヒータ40が配置される。上部熱風発生装置23の外側で上ヒータ40の上方には、過熱蒸気発生装置41が配置される。過熱蒸気発生装置41は、過熱蒸気吐出ノズル42と蒸気バルブ43を有する。過熱蒸気吐出ノズル42は、上部熱風発生装置23内に過熱蒸気を吐出するように、上部熱風発生装置23の上方から下方に向けて配設されている。その先端には、過熱蒸気吐出口42aが設けられている。なお、過熱蒸気吐出ノズル42は、上部熱風発生装置23の側面壁から横方向に向けて配設されても構わない。また、過熱蒸気発生装置41には、蒸気供給パイプ44を介して飽和水蒸気を発生させる飽和水蒸気発生装置45が接続されている。前述の蒸気バルブ43は、飽和水蒸気発生装置45からの飽和水蒸気の量を調節する。飽和水蒸気発生装置45には、給水装置47が給水パイプ46を介して接続されており、給水バルブ48によってその給水量を調節する。
【0027】
右内側壁16の外側には、送風装置20、上部熱風発生装置23、過熱蒸気発生装置41、飽和水蒸気発生装置45、給水装置47、及び加熱調理器1全体の運転制御を行う制御部(図示せず)が配置されている。右内側壁16の外側前面には、この制御部に対する指示を入力する操作パネル18が配置されている。
【0028】
底面壁13には、被調理物70を載置するためのターンテーブル60が配置される。ターンテーブル60の上には、被調理物70の種類に応じ、グリルやラック等の支持手段(図示せず)が載置される。
【0029】
加熱調理器1の動作は次の通りである。まず、扉17を開き、ターンテーブル60にグリルやラック等の支持手段の中から被調理物70の種類に適合したものを載置する。その上に被調理物70を直接、或いは容器に入れた状態で置き、扉17を閉じる。
【0030】
扉17を閉じた後、操作パネル18より調理条件を入力する。制御部(図示せず)は、入力された調理条件に基づき、予めプログラムされている複数の調理法の中から最適のものを選択する。そして、送風装置20、上部熱風発生装置23、過熱蒸気発生装置41、飽和水蒸気発生装置45、給水装置47を駆動し、加熱調理を開始する。
【0031】
送風装置20は、吸い込み部31から加熱室11内の空気を吸い込み、上部熱風発生装置23に送り出す。上部熱風発生装置23に設けられた上ヒータ40により、送風装置20から吐出された空気が熱風と化して上部熱風吹き出し部30から吹き出す。ここで、過熱蒸気吐出ノズル42は、上部熱風発生装置23内に過熱蒸気を吐出するように配設されている(図2参照)。したがって、過熱蒸気吐出ノズル42周辺の気温を、加熱室11の気温よりも高い温度に維持することができるので、過熱蒸気が冷却されて結露することを抑えることが可能である。また、過熱蒸気が熱風気流中に吐出されることにより、熱風と効率良く混合されるので、加熱室11内に送り込まれても高温が維持される。
【0032】
図3は、本発明の第2の実施形態に係る加熱調理器を示す概略断面図である。構成の概要は、前記第1の実施形態と同様である。
【0033】
過熱蒸気吐出ノズル42は、上部熱風発生装置23の上方から下方に向けて、過熱蒸気吐出口42aが上ヒータ40に最も近くなる場所に配設されている。本実施形態においては、過熱蒸気を更に加熱でき、過熱蒸気発生装置41で発生させた過熱蒸気よりも高い温度の過熱蒸気を生成することできる。なお、過熱蒸気吐出ノズル42は、第1の実施形態同様、上部熱風発生装置23内の側面壁から横方向に向けて配設されても構わない。
【0034】
図4は、本発明の第3の実施形態に係る加熱調理器を示す概略断面図である。構成の概要は、前記第1及び第2の実施形態と同様である。
【0035】
過熱蒸気吐出ノズル42は、上部熱風発生装置23の上方から下方に向けて、上部熱風発生装置23を突き抜けて、過熱蒸気吐出口42aが上部熱風吹き出し部30近傍に配設されている。本実施形態においては、吐出された過熱蒸気を、熱風が上方からカバーするように吹き出されるので、過熱蒸気を熱風に効率良く混合して高温を維持することが可能であり、過熱蒸気吐出口42aを直接熱風に晒すことができる。なお、過熱蒸気吐出ノズル42は、上部熱風発生装置23内の側面壁から横方向に向けて配設されても構わない。また、過熱蒸気吐出ノズル42は、過熱蒸気吐出口42aが上部熱風吹き出し部30の上部熱風発生装置23側、或いは加熱室11側のいずれに位置するように配設されても構わない。
【0036】
図5は、本発明の第4の実施形態に係る加熱調理器を示す概略断面図である。構成の概要は、前記第1ないし第3の実施形態と同様である。
【0037】
過熱蒸気吐出ノズル42は、上部熱風発生装置23の上方から下方に向けて、過熱蒸気吐出口42aが上ヒータ40に最も近くなる場所に配設されている。そして、過熱蒸気吐出口42aの近傍下方に、水平に蒸気偏向板49が配設されている。本実施形態においては、過熱蒸気が被調理物70に直接当たることを防ぎ、被調理物70周辺の領域に過熱蒸気を拡散させて送り込むことができる。なお、過熱蒸気吐出ノズル42は、第1の実施形態同様、上部熱風発生装置23の側面壁から横方向に向けて配設されても構わない。これに伴い、蒸気偏向板49は垂直に配設される。
【0038】
図6は、本発明の第5の実施形態に係る加熱調理器の過熱蒸気吐出口周辺を示す部分拡大図である。図のように、過熱蒸気吐出ノズル42は、その過熱蒸気吐出口42aの径を絞るように構成されている。そして、過熱蒸気吐出口42aの直下の上部熱風吹き出し部30には、過熱蒸気吹き出し孔30aが設けられている。これにより、過熱蒸気の吐出速度が向上される。したがって、過熱蒸気は付勢され、過熱蒸気を短時間で加熱室11に送り込むことができる。また、過熱蒸気は、その勢いが弱まることなく被調理物70に届くので、被調理物70を局部的に加熱することができる。
【0039】
図7は、本発明の第6の実施形態に係る加熱調理器を示す概略断面図である。構成の概要は、前記第1の実施形態と同様である。
【0040】
図1及び図2に示す前記第1の実施形態の飽和水蒸気発生装置45と過熱蒸気発生装置41が一体化した一体型過熱蒸気発生装置50が、上部熱風発生装置23の外側で上ヒータ40の上方に配置される。一体型過熱蒸気発生装置50には、前記過熱蒸気発生装置41と同様に、過熱蒸気吐出ノズル42と蒸気バルブ43が設けられている。また、給水装置47が給水パイプ46を介して接続されており、給水バルブ48によってその給水量を調節する。一体型過熱蒸気発生装置50内では、水から飽和水蒸気を発生させ、その後、過熱蒸気を発生させる。蒸気バルブ43は、装置内で発生する飽和水蒸気の量を調節する。本実施形態においては、蒸気を発生する部品の表面積を小さくすることで、熱の放散を少なくすることができるので、加熱調理器のエネルギー効率を向上することが可能となる。また、部品点数の削減により、コストダウンや構造の簡素化が可能となる。
【0041】
図8は、本発明の第7の実施形態に係る加熱調理器の正面図にして、透視図法で表現したものである。図9は、図8に示す加熱調理器の概略断面図である。構成の概要は、前記第1ないし第4の実施形態と同様である。
【0042】
ファンケーシング21は2方向分岐型であって、天井壁12の外側に設けた上部熱風発生装置23と、左内側壁15の外側に設けた側面熱風発生装置24に接続する。側面熱風発生装置24は、加熱室11に向かって開口する側面熱風吹き出し部32を有する。側面熱風吹き出し部32は、小孔の集合からなる。
【0043】
側面熱風発生装置24の中には、横ヒータ51が配置される。側面熱風発生装置24の外側で横ヒータ51の左側には、過熱蒸気発生装置41が配置される。また、側面熱風発生装置24の上方には、飽和水蒸気発生装置45が配置される。これらの装置の構成や接続は、上部熱風発生装置23の上方に備えられたそれらと同様である。
【0044】
送風装置20は、吸い込み部31から加熱室11内の空気を吸い込み、上部熱風発生装置23及び側面熱風発生装置24に吐出する。上部熱風発生装置23及び側面熱風発生装置24に設けられた上ヒータ40及び横ヒータ51により、送風装置20から吐出された空気が熱風と化して上部熱風吹き出し部30及び側面熱風吹き出し部32から吹き出す。本実施形態においては、熱風及び過熱蒸気を相異なる複数の方向から被調理物70に当てることができる。その結果、被調理物70を加熱ムラなく、効率よく調理することが可能である。また、熱風及び過熱蒸気をより短時間で、加熱室11内の広い範囲に送り込むことができる。
【0045】
上記のように本発明の実施形態を示したが、この他、発明の主旨を逸脱しない範囲で種々の変更を加えて実施することができる。例えば、本発明に誘電加熱手段を組み合わせることも可能である。
【0046】
【発明の効果】
本発明の上記の構成によれば、過熱蒸気の吐出ノズルが熱風発生装置内に配設されるので、過熱蒸気の吐出口周辺の気温を、加熱室の気温よりも高い温度に維持することができる。また、過熱蒸気が熱風気流中に吐出されることにより、過熱蒸気は熱風と効率良く混合されるので、加熱室内に送り込まれても高温が維持される。その結果、過熱蒸気の吐出口周辺や加熱室の内面、被調理物で過熱蒸気が冷却されて結露することを抑えることが可能である。さらに、過熱蒸気自体の温度低下が抑えられることで、過熱蒸気による優れた加熱効率を実現することが可能である。
【0047】
また、蒸気偏向板の使用や、複数の方向から熱風を加熱室に送り込むことによって、被調理物を加熱ムラなく、効率よく調理することが可能である。また、加熱室内全体の加熱ムラを抑えることができるので、加熱室内の広い範囲にわたって被調理物が置かれている場合でも、効率良く調理することが可能である。そして、様々な被調理物、様々な調理法に対応することが可能である。
【図面の簡単な説明】
【図1】本発明の第1の実施形態に係る加熱調理器の正面図にして、透視図法で表現したもの
【図2】図1に示す加熱調理器の概略断面図
【図3】本発明の第2の実施形態に係る加熱調理器を示す概略断面図
【図4】本発明の第3の実施形態に係る加熱調理器を示す概略断面図
【図5】本発明の第4の実施形態に係る加熱調理器を示す概略断面図
【図6】本発明の第5の実施形態に係る加熱調理器の過熱蒸気吐出口周辺を示す部分拡大図
【図7】本発明の第6の実施形態に係る加熱調理器を示す概略断面図
【図8】本発明の第7の実施形態に係る加熱調理器の正面図にして、透視図法で表現したもの
【図9】図8に示す加熱調理器の概略断面図
【符号の説明】
1 加熱調理器
11 加熱室
20 送風装置
23 上部熱風発生装置
24 側面熱風発生装置
30 上部熱風吹き出し部
31 吸い込み部
32 側面熱風吹き出し部
40 上ヒータ
41 過熱蒸気発生装置
42 過熱蒸気吐出ノズル
42a 過熱蒸気吐出口
45 飽和水蒸気発生装置
47 給水装置
50 一体型過熱蒸気発生装置
51 横ヒータ
[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a heating cooker for cooking an object to be cooked. In particular, the present invention relates to a heating cooker for cooking an object to be cooked with superheated steam of 100 ° C. or more.
[0002]
[Prior art]
2. Description of the Related Art A heating cooker that cooks an object to be cooked, such as food, using superheated steam of 100 ° C. or higher, which is obtained by further heating saturated steam, is well known. In this heating cooker, a saturated steam generator generates saturated steam with water supplied from a water supply tank or the like, and the saturated steam is further heated by a superheated steam generator to generate superheated steam. The superheated steam is supplied into a heating chamber containing the food to be cooked. When the temperature in the heating chamber reaches a predetermined temperature corresponding to the object to be cooked and the heating time suitable for the object to be cooked has elapsed, the supply of the superheated steam is stopped, and the cooking is completed.
[0003]
By using the superheated steam, it is possible to prevent evaporation of water in the object to be cooked, and to cook with a moist finish. Further, since the superheated steam has a higher heat transfer coefficient than air, the cooking time can be shortened, and the heating chamber becomes almost oxygen-free, so that the oxidation of the object to be cooked can be reduced.
[0004]
With respect to the structure of a conventional heating cooker using superheated steam, one that directly supplies superheated steam into a heating chamber has been proposed (see Patent Document 1).
[0005]
[Patent Document 1]
JP-A-9-4849
[Problems to be solved by the invention]
The temperature of the superheated steam generated by the superheated steam generator is naturally higher than the temperature in the heating chamber. In the heating cooker described in Patent Document 1, when the superheated steam is supplied into the heating chamber, the superheated portion is heated at the inner surface of the heating chamber having a relatively low temperature and around the discharge port of the superheated steam, particularly at the discharge nozzle and the object to be cooked. The steam cools and condenses. If this condensation causes water droplets generated on the inner surface of the heating chamber or the discharge nozzle to scatter and adhere to the object to be cooked, or if condensation forms on the surface of the object to be cooked, the object to be cooked cannot be heated sufficiently or the object to be cooked cannot be heated. There is a problem that the finish becomes poor, for example, because the surface becomes watery. Furthermore, dew condensation on the inner surface of the heating chamber is very unsanitary, causing dirt, and increases the cleaning time.
[0007]
The present invention has been made in view of the above points, and in a heating cooker for heating and cooking an object to be cooked with overheated steam, the superheated steam is cooled around the discharge port of the overheated steam, the inner surface of the heating chamber, and the object to be cooked. An object of the present invention is to provide a heating cooker that suppresses dew condensation due to heat and exhibits excellent heating efficiency by superheated steam.
[0008]
[Means for Solving the Problems]
In order to solve the above-mentioned problems, the present invention provides a heating chamber in which an object to be cooked is accommodated, a hot-air generator that supplies hot air that can be cooked by itself to the heating chamber, and changes water into saturated steam. In a heating cooker that includes a saturated steam generation device and a superheated steam generation device that heats saturated steam to generate superheated steam, and that performs heating cooking of the object to be cooked with the superheated steam, the superheated steam discharge nozzle is It was arranged in the hot air generator.
[0009]
According to this configuration, the temperature around the discharge port of the superheated steam can be maintained at a temperature higher than the temperature of the heating chamber. Further, since the superheated steam is efficiently mixed with the hot air, the high temperature is maintained even when the superheated steam is sent into the heating chamber. As a result, it is possible to prevent the superheated steam from being cooled and condensed around the discharge port of the superheated steam, the inner surface of the heating chamber, and the object to be cooked. Further, by suppressing the temperature decrease of the superheated steam itself, it is possible to realize excellent heating efficiency by the superheated steam.
[0010]
Further, in the present invention, the discharge nozzle of the superheated steam is disposed near the heater in the hot air generator so that the discharge port of the discharge nozzle is located.
[0011]
According to this configuration, the superheated steam can be further heated, and the superheated steam having a higher temperature than the superheated steam generated by the superheated steam generator can be generated. As a result, heating at a higher temperature is possible, and efficient cooking is possible.
[0012]
Further, in the present invention, the discharge nozzle of the superheated steam is disposed so that the discharge port is located in the heating chamber in the vicinity of a hot air blow-out portion from the hot air generator.
[0013]
According to this configuration, the superheated steam can be efficiently mixed with the hot air to maintain the high temperature, and the outlet of the superheated steam can be directly exposed to the hot air. As a result, dew condensation around the discharge port of the superheated steam can be further suppressed.
[0014]
In the present invention, a steam deflector is provided near the discharge port of the superheated steam.
[0015]
According to this configuration, the superheated steam can be prevented from directly hitting the object to be cooked, and the superheated steam can be diffused and sent to a region around the object to be cooked. As a result, it is possible to reduce uneven heating of the object to be cooked. It is also possible to prevent unnecessary scorching.
[0016]
Further, in the present invention, in the superheated steam generator, the discharge speed of the superheated steam is improved by reducing the diameter of the discharge port of the superheated steam.
[0017]
According to this configuration, the superheated steam can reach the object to be cooked. Further, the object to be cooked can be locally heated. As a result, the cooking time can be reduced and the power consumption can be reduced, and it is possible to achieve a finish in which a desired portion of the object to be cooked is intentionally browned.
[0018]
Further, in the present invention, the saturated steam generator and the superheated steam generator are formed integrally.
[0019]
According to this configuration, since the surface area of the component is reduced, heat dissipation can be reduced. In addition, since it is not necessary to provide these as separate devices, the number of parts can be reduced. As a result, the energy efficiency of the cooking device can be improved. Further, it is possible to reduce costs, simplify the structure, and reduce the space occupied by components.
[0020]
Further, in the present invention, in the heating cooking device, a plurality of the hot air generators are provided.
[0021]
According to this configuration, the hot air and the superheated steam can be applied to the object to be cooked from a plurality of different directions. Further, the hot air and the superheated steam can be sent to a wide range in the heating chamber in a shorter time. As a result, it is possible to efficiently cook the food without uneven heating. In addition, since uneven heating in the entire heating chamber can be suppressed, cooking can be efficiently performed even when objects to be cooked are placed over a wide range in the heating chamber. And it is possible to respond to various cooking objects and various cooking methods.
[0022]
BEST MODE FOR CARRYING OUT THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0023]
FIG. 1 is a front view of a heating cooker according to a first embodiment of the present invention, which is represented by a perspective view. FIG. 2 is a schematic sectional view of the cooking device shown in FIG. The heating cooker 1 has a rectangular parallelepiped housing 10. A rectangular parallelepiped heating chamber 11 is provided inside the housing 10. The upper and lower portions of the heating chamber 11 are constituted by a ceiling wall 12 and a bottom wall 13, and three of the four circumferences are constituted by a back inner wall 14, a left inner wall 15, and a right inner wall 16. The other one of the four circumferences is constituted by a door 17 that can be opened and closed. Each wall of the heating chamber 11 and the door 17 are provided with heat insulation measures.
[0024]
A blower 20 is installed outside the inner wall 14. The blower 20 has a fan 22 disposed in a fan casing 21, and the fan 22 is rotated by a motor (not shown). The fan casing 21 is connected to an upper hot air generator 23 provided outside the ceiling wall 12.
[0025]
The upper hot-air generator 23 has an upper hot-air blowing unit 30 that opens toward the heating chamber 11. Further, a suction portion 31 of the blower 20 is provided on the inner wall 14 at the back of the heating chamber 11. The upper hot air blow-out part 30 and the suction part 31 are formed of a set of small holes.
[0026]
An upper heater 40 is arranged in the upper hot air generator 23. A superheated steam generator 41 is arranged outside the upper hot air generator 23 and above the upper heater 40. The superheated steam generator 41 has a superheated steam discharge nozzle 42 and a steam valve 43. The superheated steam discharge nozzle 42 is disposed downward from above the upper hot air generator 23 so as to discharge superheated steam into the upper hot air generator 23. A superheated steam discharge port 42a is provided at the tip. Note that the superheated steam discharge nozzle 42 may be disposed laterally from the side wall of the upper hot air generator 23. The superheated steam generator 41 is connected to a saturated steam generator 45 for generating saturated steam via a steam supply pipe 44. The aforementioned steam valve 43 adjusts the amount of saturated steam from the saturated steam generator 45. A water supply device 47 is connected to the saturated steam generator 45 via a water supply pipe 46, and the amount of water supply is adjusted by a water supply valve 48.
[0027]
Outside the right inner wall 16, a control unit (FIG. 1) that controls the operation of the blower 20, the upper hot air generator 23, the superheated steam generator 41, the saturated steam generator 45, the water supply device 47, and the entire heating cooker 1. (Not shown). An operation panel 18 for inputting an instruction to the control unit is arranged on the outer front surface of the right inner wall 16.
[0028]
On the bottom wall 13, a turntable 60 on which the object 70 is placed is arranged. On the turntable 60, support means (not shown) such as a grill or a rack is placed according to the type of the object 70 to be cooked.
[0029]
The operation of the cooking device 1 is as follows. First, the door 17 is opened, and a support means such as a grill or a rack suitable for the type of the object 70 is placed on the turntable 60. The object to be cooked 70 is placed thereon or directly in a container, and the door 17 is closed.
[0030]
After the door 17 is closed, cooking conditions are input from the operation panel 18. The control unit (not shown) selects an optimal one from a plurality of preprogrammed cooking methods based on the input cooking conditions. Then, the air blower 20, the upper hot air generator 23, the superheated steam generator 41, the saturated steam generator 45, and the water supply device 47 are driven to start heating and cooking.
[0031]
The blower 20 sucks the air in the heating chamber 11 from the suction part 31 and sends it out to the upper hot air generator 23. The air discharged from the blower 20 is turned into hot air by the upper heater 40 provided in the upper hot air generator 23 and blown out from the upper hot air blowout unit 30. Here, the superheated steam discharge nozzle 42 is disposed so as to discharge the superheated steam into the upper hot air generator 23 (see FIG. 2). Therefore, the air temperature around the superheated steam discharge nozzle 42 can be maintained at a higher temperature than the air temperature in the heating chamber 11, so that it is possible to suppress the superheated steam from being cooled and condensed. In addition, since the superheated steam is efficiently mixed with the hot air by being discharged into the hot air stream, the high temperature is maintained even if it is sent into the heating chamber 11.
[0032]
FIG. 3 is a schematic sectional view showing a heating cooker according to a second embodiment of the present invention. The outline of the configuration is the same as that of the first embodiment.
[0033]
The superheated steam discharge nozzle 42 is provided at a position where the superheated steam discharge port 42 a is closest to the upper heater 40 from above the upper hot air generator 23 to below. In the present embodiment, the superheated steam can be further heated, and superheated steam having a higher temperature than the superheated steam generated by the superheated steam generator 41 can be generated. Note that, similarly to the first embodiment, the superheated steam discharge nozzle 42 may be disposed laterally from a side wall in the upper hot air generator 23.
[0034]
FIG. 4 is a schematic sectional view showing a heating cooker according to a third embodiment of the present invention. The outline of the configuration is the same as in the first and second embodiments.
[0035]
The superheated steam discharge nozzle 42 penetrates through the upper hot air generator 23 from above to below the upper hot air generator 23, and a superheated steam discharge port 42 a is provided in the vicinity of the upper hot air blowout unit 30. In the present embodiment, since the discharged superheated steam is blown out so that the hot air covers it from above, the superheated steam can be efficiently mixed with the hot air to maintain a high temperature, and the superheated steam discharge port can be maintained. 42a can be directly exposed to hot air. Note that the superheated steam discharge nozzle 42 may be disposed laterally from a side wall in the upper hot air generator 23. Further, the superheated steam discharge nozzle 42 may be disposed such that the superheated steam discharge port 42 a is located on either the upper hot air generator 23 side of the upper hot air blow-out unit 30 or the heating chamber 11 side.
[0036]
FIG. 5 is a schematic sectional view showing a heating cooker according to a fourth embodiment of the present invention. The outline of the configuration is the same as in the first to third embodiments.
[0037]
The superheated steam discharge nozzle 42 is provided at a position where the superheated steam discharge port 42 a is closest to the upper heater 40 from above the upper hot air generator 23 to below. A steam deflecting plate 49 is horizontally disposed below and near the superheated steam discharge port 42a. In the present embodiment, it is possible to prevent the superheated steam from directly hitting the article 70 to be cooked, and to diffuse the superheated steam into a region around the article 70 to be cooked. The superheated steam discharge nozzle 42 may be disposed laterally from the side wall of the upper hot air generator 23 as in the first embodiment. Accordingly, the steam deflector 49 is disposed vertically.
[0038]
FIG. 6 is a partially enlarged view showing the vicinity of a superheated steam discharge port of a heating cooker according to a fifth embodiment of the present invention. As shown in the figure, the superheated steam discharge nozzle 42 is configured to narrow the diameter of the superheated steam discharge port 42a. And the superheated steam blowout hole 30a is provided in the upper hot air blowout part 30 immediately below the superheated steam discharge port 42a. Thereby, the discharge speed of the superheated steam is improved. Therefore, the superheated steam is energized, and the superheated steam can be sent into the heating chamber 11 in a short time. Moreover, since the superheated steam reaches the object 70 without decreasing its momentum, the object 70 can be locally heated.
[0039]
FIG. 7 is a schematic sectional view showing a heating cooker according to a sixth embodiment of the present invention. The outline of the configuration is the same as that of the first embodiment.
[0040]
An integrated superheated steam generator 50 in which the saturated steam generator 45 and the superheated steam generator 41 of the first embodiment shown in FIGS. 1 and 2 are integrated, is provided with an upper heater 40 outside the upper hot air generator 23. It is arranged above. The integrated superheated steam generator 50 is provided with a superheated steam discharge nozzle 42 and a steam valve 43, similarly to the superheated steam generator 41. A water supply device 47 is connected via a water supply pipe 46, and the amount of water supply is adjusted by a water supply valve 48. In the integrated superheated steam generator 50, saturated steam is generated from water, and then superheated steam is generated. The steam valve 43 controls the amount of saturated steam generated in the device. In the present embodiment, heat dissipation can be reduced by reducing the surface area of the component that generates steam, so that the energy efficiency of the cooking device can be improved. In addition, the reduction in the number of parts makes it possible to reduce costs and simplify the structure.
[0041]
FIG. 8 is a front view of a heating cooker according to a seventh embodiment of the present invention, which is represented by a perspective view. FIG. 9 is a schematic sectional view of the heating cooker shown in FIG. The outline of the configuration is the same as in the first to fourth embodiments.
[0042]
The fan casing 21 is of a two-way branch type and is connected to an upper hot air generator 23 provided outside the ceiling wall 12 and a side hot air generator 24 provided outside the left inner wall 15. The side hot air generator 24 has a side hot air blowing part 32 that opens toward the heating chamber 11. The side hot-air blowing part 32 is formed of a set of small holes.
[0043]
A horizontal heater 51 is disposed in the side hot air generator 24. The superheated steam generator 41 is disposed outside the side hot air generator 24 and to the left of the horizontal heater 51. A saturated steam generator 45 is arranged above the side hot air generator 24. The configuration and connection of these devices are the same as those provided above the upper hot air generator 23.
[0044]
The blower 20 sucks the air in the heating chamber 11 from the suction part 31 and discharges the air to the upper hot air generator 23 and the side hot air generator 24. By the upper heater 40 and the horizontal heater 51 provided in the upper hot air generator 23 and the side hot air generator 24, the air discharged from the air blower 20 is turned into hot air and blown out from the upper hot air blowing unit 30 and the side hot air blowing unit 32. . In the present embodiment, the hot air and the superheated steam can be applied to the object 70 from a plurality of different directions. As a result, the object to be cooked 70 can be efficiently cooked without uneven heating. Further, the hot air and the superheated steam can be sent to a wide range in the heating chamber 11 in a shorter time.
[0045]
Although the embodiment of the present invention has been described above, other various modifications can be made without departing from the gist of the present invention. For example, it is possible to combine dielectric heating means with the present invention.
[0046]
【The invention's effect】
According to the above configuration of the present invention, since the superheated steam discharge nozzle is provided in the hot air generator, it is possible to maintain the temperature around the superheated steam discharge port at a temperature higher than the temperature of the heating chamber. it can. Further, since the superheated steam is discharged into the hot air stream, the superheated steam is efficiently mixed with the hot air, so that the high temperature is maintained even when the superheated steam is sent into the heating chamber. As a result, it is possible to prevent the superheated steam from being cooled and condensed around the discharge port of the superheated steam, the inner surface of the heating chamber, and the object to be cooked. Further, by suppressing the temperature decrease of the superheated steam itself, it is possible to realize excellent heating efficiency by the superheated steam.
[0047]
In addition, by using a steam deflector or sending hot air into the heating chamber from a plurality of directions, it is possible to efficiently cook an object to be cooked without uneven heating. In addition, since uneven heating in the entire heating chamber can be suppressed, cooking can be efficiently performed even when objects to be cooked are placed over a wide range in the heating chamber. And it is possible to respond to various cooking objects and various cooking methods.
[Brief description of the drawings]
FIG. 1 is a front view of a heating cooker according to a first embodiment of the present invention, represented by a perspective view. FIG. 2 is a schematic cross-sectional view of the heating cooker shown in FIG. FIG. 4 is a schematic sectional view showing a heating cooker according to a second embodiment of the present invention. FIG. 4 is a schematic sectional view showing a heating cooker according to a third embodiment of the present invention. FIG. 5 is a fourth embodiment of the present invention. FIG. 6 is a schematic sectional view showing a heating cooker according to the present invention. FIG. 6 is a partially enlarged view showing the vicinity of a superheated steam discharge port of the heating cooker according to a fifth embodiment of the present invention. FIG. 7 is a sixth embodiment of the present invention. FIG. 8 is a front view of a heating cooker according to a seventh embodiment of the present invention, which is represented by a perspective view. FIG. 9 is a heating cooker shown in FIG. Schematic cross section of [Description of reference numerals]
DESCRIPTION OF SYMBOLS 1 Cooking device 11 Heating room 20 Blower 23 Upper hot air generator 24 Side hot air generator 30 Upper hot air blowout part 31 Suction part 32 Side hot air blowout part 40 Upper heater 41 Superheated steam generator 42 Superheated steam discharge nozzle 42a Superheated steam discharge Outlet 45 Saturated steam generator 47 Water supply device 50 Integrated superheated steam generator 51 Horizontal heater

Claims (7)

被調理物が収容される加熱室と、それのみでも加熱調理が可能な熱風を加熱室に供給する熱風発生装置と、水を飽和水蒸気に変化させる飽和水蒸気発生装置と、飽和水蒸気を加熱して過熱蒸気を発生させる過熱蒸気発生装置とを備え、前記過熱蒸気により被調理物の加熱調理を行う加熱調理器において、前記過熱蒸気の吐出ノズルを、前記熱風発生装置内に配設したことを特徴とする加熱調理器。A heating chamber for accommodating the object to be cooked, a hot air generator for supplying hot air capable of heating and cooking to the heating chamber alone, a saturated steam generator for converting water into saturated steam, and heating the saturated steam. A superheated steam generator for generating superheated steam, wherein the heating nozzle of the superheated steam is provided in the hot air generator, wherein the superheated steam discharge nozzle is provided in the hot air generator. And cooker. 前記吐出ノズルを、その吐出口が前記熱風発生装置内のヒータ近傍に位置するように配設したことを特徴とする請求項1に記載の加熱調理器。The cooking device according to claim 1, wherein the discharge nozzle is disposed such that a discharge port thereof is located near a heater in the hot air generator. 前記吐出ノズルを、その吐出口が前記加熱室内における、前記熱風発生装置からの熱風吹き出し部近傍に位置するように配設したことを特徴とする請求項1に記載の加熱調理器。The heating cooker according to claim 1, wherein the discharge nozzle is disposed such that a discharge port thereof is located in a vicinity of a hot air blow-out portion from the hot air generator in the heating chamber. 前記吐出ノズルの吐出口近傍に、蒸気偏向板を設けたことを特徴とする請求項1ないし請求項3のいずれかに記載の加熱調理器。The heating cooker according to any one of claims 1 to 3, wherein a steam deflection plate is provided near a discharge port of the discharge nozzle. 前記吐出ノズルの吐出口の径を絞ることによって、過熱蒸気の吐出速度を向上させたことを特徴とする請求項1ないし請求項4のいずれかに記載の加熱調理器。The heating cooker according to any one of claims 1 to 4, wherein the discharge speed of the superheated steam is improved by reducing the diameter of the discharge port of the discharge nozzle. 前記飽和水蒸気発生装置と、前記過熱蒸気発生装置が、一体に形成されていることを特徴とする請求項1ないし請求項5のいずれかに記載の加熱調理器。The cooking device according to any one of claims 1 to 5, wherein the saturated steam generator and the superheated steam generator are formed integrally. 前記加熱室に、複数の前記熱風発生装置が配設されていることを特徴とする請求項1ないし請求項6のいずれかに記載の加熱調理器。The heating cooker according to any one of claims 1 to 6, wherein a plurality of the hot air generators are disposed in the heating chamber.
JP2002326341A 2002-11-11 2002-11-11 Cooker Expired - Fee Related JP4334201B2 (en)

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Cited By (14)

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WO2005066544A1 (en) * 2004-01-07 2005-07-21 Sharp Kabushiki Kaisha Steam cooking apparatus
JP2006038254A (en) * 2004-07-22 2006-02-09 Sharp Corp Heating cooker
JP2006118806A (en) * 2004-10-22 2006-05-11 Matsushita Electric Ind Co Ltd Heating device
JP2006317016A (en) * 2005-05-10 2006-11-24 Hitachi Home & Life Solutions Inc Heating cooker
JP2006317015A (en) * 2005-05-10 2006-11-24 Hitachi Home & Life Solutions Inc Heating cooker
JP2007003136A (en) * 2005-06-27 2007-01-11 Hitachi Appliances Inc Cooking device
JP2007010163A (en) * 2005-06-28 2007-01-18 Hitachi Appliances Inc Heating cooker
KR100678177B1 (en) 2006-02-13 2007-02-02 동양매직 주식회사 A instant steam generator
EP1757861A1 (en) * 2004-05-14 2007-02-28 Sharp Kabushiki Kaisha Steam cooker
JP2007064519A (en) * 2005-08-30 2007-03-15 San Plant Kogyo Kk Batch type oven
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JP2010133703A (en) * 2010-02-05 2010-06-17 Sharp Corp Cooking device
US7847220B2 (en) 2006-09-27 2010-12-07 Samsung Electronics Co., Ltd. Steam generator and heating cooking apparatus having the same
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US7802564B2 (en) 2004-01-07 2010-09-28 Sharp Kabushiki Kaisha Steam cooking apparatus
WO2005066544A1 (en) * 2004-01-07 2005-07-21 Sharp Kabushiki Kaisha Steam cooking apparatus
EP1757861B1 (en) * 2004-05-14 2013-12-18 Sharp Kabushiki Kaisha Steam cooker
EP1757861A1 (en) * 2004-05-14 2007-02-28 Sharp Kabushiki Kaisha Steam cooker
JP2006038254A (en) * 2004-07-22 2006-02-09 Sharp Corp Heating cooker
JP2006118806A (en) * 2004-10-22 2006-05-11 Matsushita Electric Ind Co Ltd Heating device
JP4696527B2 (en) * 2004-10-22 2011-06-08 パナソニック株式会社 Heating device
JP2006317016A (en) * 2005-05-10 2006-11-24 Hitachi Home & Life Solutions Inc Heating cooker
JP4585910B2 (en) * 2005-05-10 2010-11-24 日立アプライアンス株式会社 Cooker
JP2006317015A (en) * 2005-05-10 2006-11-24 Hitachi Home & Life Solutions Inc Heating cooker
JP4557788B2 (en) * 2005-05-10 2010-10-06 日立アプライアンス株式会社 Cooker
JP2007003136A (en) * 2005-06-27 2007-01-11 Hitachi Appliances Inc Cooking device
JP2007010163A (en) * 2005-06-28 2007-01-18 Hitachi Appliances Inc Heating cooker
JP4576296B2 (en) * 2005-06-28 2010-11-04 日立アプライアンス株式会社 Cooker
JP4583272B2 (en) * 2005-08-30 2010-11-17 サン・プラント工業株式会社 Batch oven
JP2007064519A (en) * 2005-08-30 2007-03-15 San Plant Kogyo Kk Batch type oven
KR100678177B1 (en) 2006-02-13 2007-02-02 동양매직 주식회사 A instant steam generator
JP2007240119A (en) * 2006-03-10 2007-09-20 Naomoto Kogyo Kk Food cooker
US7847220B2 (en) 2006-09-27 2010-12-07 Samsung Electronics Co., Ltd. Steam generator and heating cooking apparatus having the same
JP2010133703A (en) * 2010-02-05 2010-06-17 Sharp Corp Cooking device
JP2019168163A (en) * 2018-03-23 2019-10-03 アイリスオーヤマ株式会社 Heating cooker

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