JP3780992B2

JP3780992B2 - Toaster oven

Info

Publication number: JP3780992B2
Application number: JP2002288458A
Authority: JP
Inventors: 徹田中
Original assignee: Tiger Corp
Current assignee: Tiger Corp
Priority date: 2002-10-01
Filing date: 2002-10-01
Publication date: 2006-05-31
Anticipated expiration: 2022-10-01
Also published as: JP2004125237A

Description

【０００１】
【発明の属する技術分野】
【０００２】
本願発明は、加熱調理温度を調節可能とされたオーブントースターに関するものである。
【従来の技術】
【０００３】
近年、一般家庭用のオーブントースターを食パンのトーストだけではなく、冷凍食品等の加熱調理に使用したいというユーザの要求が高まっており、庫内温度を温度調節器により制御する必要がある。
【０００４】
ところで、冷凍食品を加熱調理する場合、解凍に多くの熱量が必要なため、調理室温度を高くする必要がある。ところが、一般的な家庭用オーブントースターの場合、温度調節器の最高設定温度は、約２２０℃とされているため、調理室温度は、図７に点線Ｂで示すように、２５０℃以上に保持することが難しいこととなっている。
【０００５】
上記のような不具合を解消するために、温度調節器の感熱棒部（調理室内に突出されている）と加熱源であるヒータとの間に遮熱板を設けて、ヒータから感熱棒部への熱輻射を低減させることにより、調理室温度を高く保持できるようにした提案がなされている（特許文献１参照）。
【０００６】
【特許文献１】
特開平１１−７６０７１号公報。
【発明が解決しようとする課題】
【０００７】
ところが、上記公知例の場合、温度調節器の感熱棒部の感度が低下せしめられた結果として、調理室温度を高く保持することはできるものの、図７に鎖線Ｃで示すように、ヒータがＯＮ／ＯＦＦするハンチング幅が大きくなってしまい、調理性能に悪影響を与えるおそれがある。
【０００８】
本願発明は、上記の点に鑑みてなされたもので、簡単な部品構成で調理室温度を高く保持しながらも、ハンチング幅を小さく抑え得るようにすることを目的としている。
【課題を解決するための手段】
【０００９】
本願発明では、上記課題を解決するための第１の手段として、本体内を区画して形成された調理室と機械室とを備え、前記調理室側に、加熱源となる電気ヒータと調理物を載置する焼き網とを配設する一方、前記機械室側に、前記電気ヒータの出力を制御する温度調節器を配設してなるオーブントースターにおいて、前記温度調節器の感熱棒部を、前記調理室の内壁の外面から前記電気ヒータの近傍にまで延設するとともに、前記調理室内壁に、前記調理室側に向かって突出して前記感熱棒部における根元部分を覆い、前記調理室内と外部と連通させる通気路を有し且つ前記調理室内壁と別体構成とされた導風部材を設け、該導風部材に、前記感熱棒部が遊挿される挿通穴を形成する一方、前記調理室内壁に、前記導風部材内と連通し且つ前記挿通穴の開口面積より大きな開口面積を有する開口を形成している。
【００１０】
上記のように構成したことにより、電気ヒータへの通電が開始され、電気ヒータからの輻射熱により温度調節器の感熱棒部の温度が上昇して設定温度を超えると、温度調節器がＯＦＦ作動して電気ヒータへの通電が停止される。このとき、導風部材の通気路を介して外気が調理室内へ導入される過程で前記感熱棒部が冷却されるため、温度調節器がＯＮ作動して電気ヒータへの通電が開始される。つまり、温度調節器がＯＦＦ作動してからＯＮ作動するまでの時間が、外気によって冷却される分だけ速められることとなるのである。従って、電気ヒータへの積算通電時間が長くなり且つ積算通電停止時間が短くなり、図７に実線Ａで示すように、点線Ｂあるいは鎖線Ｃに比べて、調理室温度を高く保持することができるとともに、ハンチング幅を小さく抑えることができる。しかも、電気ヒータへの通電停止時に、導風部材の通気路から導入される外気が感熱棒部に接触し易くなり、感熱棒部の冷却が促進される。また、別体構成の導風部材を調理室内壁に取り付け、調理室内壁に導風部材内と連通する開口を形成するだけで、外気を導入する通気路を形成することができることとなり、通気路を簡単に構成することができる。さらに、調理室内壁の開口から通気路への外気導入が容易となる。
【００１１】
本願発明では、上記課題を解決するための第２の手段として、本体内を区画して形成された調理室と機械室とを備え、前記調理室側に、加熱源となる電気ヒータと調理物を載置する焼き網とを配設する一方、前記機械室側に、前記電気ヒータの出力を制御する温度調節器を配設してなるオーブントースターにおいて、前記温度調節器の感熱棒部を、前記調理室の内壁の外面から前記電気ヒータの近傍にまで延設するとともに、前記調理室内壁に、前記調理室側に向かって突出して前記感熱棒部における根元部分を覆い且つ前記調理室内と外部と連通させる通気路を有する導風部材を前記調理室内壁と一体に設けている。
【００１２】
上記のように構成したことにより、電気ヒータへの通電が開始され、電気ヒータからの輻射熱により温度調節器の感熱棒部の温度が上昇して設定温度を超えると、温度調節器がＯＦＦ作動して電気ヒータへの通電が停止される。このとき、導風部材の通気路を介して外気が調理室内へ導入される過程で前記感熱棒部が冷却されるため、温度調節器がＯＮ作動して電気ヒータへの通電が開始される。つまり、温度調節器がＯＦＦ作動してからＯＮ作動するまでの時間が、外気によって冷却される分だけ速められることとなるのである。従って、電気ヒータへの積算通電時間が長くなり且つ積算通電停止時間が短くなり、図７に実線Ａで示すように、点線Ｂあるいは鎖線Ｃに比べて、調理室温度を高く保持することができるとともに、ハンチング幅を小さく抑えることができる。しかも、部品点数および組付工数を低減できる。
【００１３】
本願発明では、上記課題を解決するための第３の手段として、本体内を区画して形成された調理室と機械室とを備え、前記調理室側に、加熱源となる電気ヒータと調理物を載置する焼き網とを配設する一方、前記機械室側に、前記電気ヒータの出力を制御する温度調節器を配設してなるオーブントースターにおいて、前記温度調節器の感熱棒部を、前記調理室の内壁の外面から前記電気ヒータの近傍にまで延設するとともに、前記調理室内壁に、前記調理室側に向かって突出して前記感熱棒部における根元部分を覆い且つ前記調理室内と外部と連通させる通気路を有する導風部材を設け、該導風部材を、前記調理室側を頂面とする略円錐台形状としている。
【００１４】
上記のように構成したことにより、電気ヒータへの通電が開始され、電気ヒータからの輻射熱により温度調節器の感熱棒部の温度が上昇して設定温度を超えると、温度調節器がＯＦＦ作動して電気ヒータへの通電が停止される。このとき、導風部材の通気路を介して外気が調理室内へ導入される過程で前記感熱棒部が冷却されるため、温度調節器がＯＮ作動して電気ヒータへの通電が開始される。つまり、温度調節器がＯＦＦ作動してからＯＮ作動するまでの時間が、外気によって冷却される分だけ速められることとなるのである。従って、電気ヒータへの積算通電時間が長くなり且つ積算通電停止時間が短くなり、図７に実線Ａで示すように、点線Ｂあるいは鎖線Ｃに比べて、調理室温度を高く保持することができるとともに、ハンチング幅を小さく抑えることができる。しかも、外気の導入が容易となる。
【発明の実施の形態】
【００１５】
以下、添付の図面を参照して、本願発明の好適な実施の形態について説明する。
【００１６】
このオーブントースターは、図１ないし図３に示すように、本体１内を隔壁４を介して区画して形成された調理室２と機械室３とを備えて構成されており、前記調理室２の前面には、扉５によって開閉される調理物出し入れ用の開口部６が形成されている。
【００１７】
前記調理室２側には、加熱源となる電気ヒータ（即ち、上ヒータ７Ａおよび下ヒータ７Ｂ）と調理物を載置する焼き網８とが配設されている。前記上ヒータ７Ａと下ヒータ７Ｂは、共に管状ヒータとされており、調理室２内において上下に対向するようにして前記隔壁４および該隔壁４と対向する調理室内壁（図示省略）間に架設されている。前記焼き網８は、前記隔壁４および該隔壁４と対向する調理室内壁（図示省略）に形成された円弧形状のガイド溝９に端部が係止された支持棒１０に載置された状態で配設されている。また、この焼き網９の前端部は、前記扉５から突設された係止片１１に係止されており、扉５の開閉操作に伴って、前記焼き網８が前記ガイド溝９に案内されつつ引き出されあるいは押し入れられることとなっている。
【００１８】
一方、前記機械室３の前面は、調理室温度を設定するための温度調節用操作ツマミ１２およびタイマー１３を備えた操作パネル部１５とされており、前記隔壁４の機械室３側には、温度調節器１６が設けられている。
【００１９】
前記温度調節器１６の構造および作用について、図６を参照して説明する。
【００２０】
図６（イ）に示すように、前記温度調節器１６は、感熱棒部１７と温度調節部１８とからなっており、前記感熱棒部１７は、先端が閉塞された高熱膨張金属からなるパイプ１９と、該パイプ１９の開放端に溶接され、先端に開閉インシュレータ２１を備えたスプリング２０と、該スプリング２０の中間部と前記パイプ１９の先端内部とを連結した低熱膨張金属からなるアンバー２２とからなっている。
【００２１】
一方、前記温度調節部１８は、常態において互いに接触する接点２３ａ，２４ａをそれぞれ有する固定側バネ２３および可動側バネ２４と、これらのバネ２３，２４を共に移動させるシャフト２５とからなっており、前記可動側バネ２４の先端部を前記スプリング２０の開閉インシュレータ２１に対向させるように構成されている。そして、前記シャフト２５を螺回動させることにより、バネ２３，２４を前記開閉インシュレータ２１側に移動させ得るようになっている。
【００２２】
この温度調節器１６においては、感熱棒部１７が加熱されると、図６（ロ）に示すように、パイプ１９が伸びて、その長さＬｐがＬｐ′となるが、アンバー２２はほとんど伸びず、その長さはＬｉのままとなる。すると、スプリング２０がアンバー２２に引っ張られ、スプリング２０の開閉インシュレータ２１が可動側バネ２４の先端部を押し上げ、バネ２３，２４の接点２３ａ，２４ａが離間され、温度調節器１６がＯＦＦ状態となる。
【００２３】
また、温度調節器１６の設定温度を変更する際には、図６（ハ）に示すように、シャフト２５を螺回動させることにより、可動側バネ２４の先端部とスプリング２０の開閉インシュレータ２１との距離ＬｇがＬｇ′（例えば、Ｌｇ＞Ｌｇ′）に変更されることとなり、開閉インシュレータ２１の変位がＬｇ′となる温度で温度調節器１６がＯＦＦすることとなる。
【００２４】
本実施の形態においては、図４に示すように、前記温度調節器１６の感熱棒部１７は、前記調理室２と機械室３とを区画している隔壁４の外面から前記上ヒータ７Ａの近傍にまで該上ヒータ７Ａと平行となるように延設されており、前記隔壁４には、前記調理室２側に向かって突出して前記感熱棒部１７における根元部分を覆い且つ前記調理室２内と外部と連通させる通気路２６を有する導風部材２７が取り付けられている。上記したように、感熱棒部１７と上ヒータ７Ａとを平行となした場合、上ヒータ７Ａからの輻射熱が均一に感熱棒部１７に輻射されるとともに、輻射面積も大きくなるので、感温精度が向上する。なお、感熱棒部１７は、できるだけ調理室２側に延設するのが望ましく、また、感熱棒部１７の導風部材２７より突出している部分の長さは、導風部材２７から付け根（即ち、温度調節部１８）までの長さより長くするのが望ましい。
【００２５】
前記導風部材２７は、前記調理室２側を頂面２７ａとする略円錐台形状とされており、その底部２７ｂに一体形成された４個の係止片２８，２８・・を前記隔壁４に形成された係合穴２９，２９・・に係合させることにより取り付けられている。また、前記導風部材２７の頂面２７ａには、前記感熱棒部１７が遊挿される挿通穴３０が形成される一方、前記隔壁４には、前記導風部材２７内と連通し、前記挿通穴３０より開口面積が大きい開口３１が形成されている。なお、挿通穴３０の開口面積は、感熱棒部１７が接触しない程度とされ、できるだけ小さい方が望ましい。このようにすると、隔壁４の開口３１から通気路２６への外気導入が容易となるし、上ヒータ７Ａへの通電停止時には、導風部材２５の通気路２６から挿通穴３０を介して導入される外気が感熱棒部１７に接触し易くなり、感熱棒部１７の冷却が促進されることとなる。
【００２６】
前記温度調節器１６におけるシャフト２５と、前記操作パネル１５に設けられた温度調節用操作ツマミ１２のシャフト３２とは、該シャフト３２の先端部に枢着されたギヤ３３と、前記シャフト２５の先端部に枢着されたギヤ３４との噛合により動力伝達可能に結合されており、温度調節用操作ツマミ１２の回動操作に伴って、シャフト２５が螺回動されて前述したように温度調節器１６の設定温度が変更できることとなっているのである（図３参照）。符号３５は機械室３へ外気を導入する外気導入穴、３６はギヤ３３，３４および温度調節器１６を取り付けるための取付部材である。
【００２７】
上記のように構成したことにより、ヒータへの通電が開始され、上ヒータ７Ａからの輻射熱により温度調節器１６の感熱棒部１７の温度が上昇して設定温度を超えると、温度調節器１６がＯＦＦ作動して上ヒータ７Ａへの通電が停止される。このとき、導風部材２７の通気路２６を介して外気が調理室２内へ導入される過程で前記感熱棒部１７が冷却されるため、温度調節器１６がＯＮ作動して上ヒータ７Ａへの通電が開始される。つまり、温度調節器１６がＯＦＦ作動してからＯＮ作動するまでの時間が、外気によって冷却される分だけ速められることとなるのである。従って、上ヒータ７Ａへの積算通電時間が長くなり且つ積算通電停止時間が短くなり、図７に実線Ａで示すように、点線Ｂあるいは鎖線Ｃに比べて、調理室２の温度を高く保持することができるとともに、ハンチング幅を小さく抑えることができる。
【００２８】
また、この場合、別体構成の導風部材２７を隔壁４に取り付け、隔壁４に導風部材２７内と連通する開口３１を形成するだけで、外気を導入する通気路２６を形成することができることとなり、通気路２６を簡単に構成することができる。
【００２９】
さらに、この場合、調理室２と機械室３とを区画する隔壁４を利用して感熱棒部４および導風部材２７を設けることができるため、本体構造を変更する必要がなくなり、コストダウンを図ることができる。
【００３０】
ところで、前記上ヒータ７Ａは、図４に示すように、隔壁４に取り付けられたガイシ３７と該ガイシ３７に一端を固定された耐熱ガラス管３８と、該耐熱ガラス管３８内に配設された発熱体３９とからなっており、該発熱体３９は、通電により発熱する発熱部３９ａと該発熱部３９ａへの給電部となる非発熱部３９ｂとからなっている。
【００３１】
そして、本実施の形態においては、前記導風部材２７の突出量（即ち、隔壁４から導風部材２７の頂面２７ａとの距離）をＤとし、前記隔壁４から上ヒータ７Ａの発熱体３９における非発熱部３９ｂの先端部までの距離（即ち、発熱体３９の発熱部３９ａまでの距離）をＤ′とするとき、Ｄ≦Ｄ′とするのが望ましい。このようにすると、上ヒータ７Ａからの輻射熱が感熱棒部１７に効率よく輻射されることとなり、感温精度が向上することとなる。
【００３２】
なお、図５に示すように、前記導風部材２７を、前記隔壁４と一体に構成することもでき、そのように構成した場合、部品点数および組付工数を低減できる。この場合、導風部材２７の底部は開放されており、外気導入用の開口４０が形成されることとなる。
【発明の効果】
【００３３】
本願発明の第１の手段によれば、本体内を区画して形成された調理室と機械室とを備え、前記調理室側に、加熱源となる電気ヒータと調理物を載置する焼き網とを配設する一方、前記機械室側に、前記電気ヒータの出力を制御する温度調節器を配設してなるオーブントースターにおいて、前記温度調節器の感熱棒部を、前記調理室の内壁の外面から前記電気ヒータの近傍にまで延設するとともに、前記調理室内壁に、前記調理室側に向かって突出して前記感熱棒部における根元部分を覆い、前記調理室内と外部と連通させる通気路を有し且つ前記調理室内壁と別体構成とされた導風部材を設け、該導風部材に、前記感熱棒部が遊挿される挿通穴を形成する一方、前記調理室内壁に、前記導風部材内と連通し且つ前記挿通穴の開口面積より大きな開口面積を有する開口を形成して、温度調節器がＯＦＦ作動して電気ヒータへの通電が停止されたとき、導風部材の通気路を介して外気が調理室内へ導入される過程で前記感熱棒部が冷却されるようにしたので、温度調節器がＯＦＦ作動してからＯＮ作動するまでの時間が、外気によって冷却される分だけ速められ、電気ヒータへの積算通電時間が長くなり且つ積算通電停止時間が短くなり、調理室温度を高く保持することができるとともに、ハンチング幅を小さく抑えることができるという効果がある。しかも、電気ヒータへの通電停止時に、導風部材の通気路から導入される外気が感熱棒部に接触し易くなり、感熱棒部の冷却が促進されるという効果もある。また、別体構成の導風部材を調理室内壁に取り付け、調理室内壁に導風部材内と連通する開口を形成するだけで、外気を導入する通気路を形成することができることとなり、通気路を簡単に構成することができるという効果もある。さらに、調理室内壁の開口から通気路への外気導入が容易となるという効果もある。
【００３４】
本願発明の第２の手段によれば、本体内を区画して形成された調理室と機械室とを備え、前記調理室側に、加熱源となる電気ヒータと調理物を載置する焼き網とを配設する一方、前記機械室側に、前記電気ヒータの出力を制御する温度調節器を配設してなるオーブントースターにおいて、前記温度調節器の感熱棒部を、前記調理室の内壁の外面から前記電気ヒータの近傍にまで延設するとともに、前記調理室内壁に、前記調理室側に向かって突出して前記感熱棒部における根元部分を覆い且つ前記調理室内と外部と連通させる通気路を有する導風部材を前記調理室内壁と一体に設けて、温度調節器がＯＦＦ作動して電気ヒータへの通電が停止されたとき、導風部材の通気路を介して外気が調理室内へ導入される過程で前記感熱棒部が冷却されるようにしたので、温度調節器がＯＦＦ作動してからＯＮ作動するまでの時間が、外気によって冷却される分だけ速められ、電気ヒータへの積算通電時間が長くなり且つ積算通電停止時間が短くなり、調理室温度を高く保持することができるとともに、ハンチング幅を小さく抑えることができるという効果がある。しかも、部品点数および組付工数を低減できるという効果もある。
【００３５】
本願発明の第３の手段によれば、本体内を区画して形成された調理室と機械室とを備え、前記調理室側に、加熱源となる電気ヒータと調理物を載置する焼き網とを配設する一方、前記機械室側に、前記電気ヒータの出力を制御する温度調節器を配設してなるオーブントースターにおいて、前記温度調節器の感熱棒部を、前記調理室の内壁の外面から前記電気ヒータの近傍にまで延設するとともに、前記調理室内壁に、前記調理室側に向かって突出して前記感熱棒部における根元部分を覆い且つ前記調理室内と外部と連通させる通気路を有する導風部材を設け、該導風部材を、前記調理室側を頂面とする略円錐台形状として、温度調節器がＯＦＦ作動して電気ヒータへの通電が停止されたとき、導風部材の通気路を介して外気が調理室内へ導入される過程で前記感熱棒部が冷却されるようにしたので、温度調節器がＯＦＦ作動してからＯＮ作動するまでの時間が、外気によって冷却される分だけ速められ、電気ヒータへの積算通電時間が長くなり且つ積算通電停止時間が短くなり、調理室温度を高く保持することができるとともに、ハンチング幅を小さく抑えることができるという効果がある。しかも、外気の導入が容易となるという効果もある。
【図面の簡単な説明】
【図１】本願発明の実施の形態にかかるオーブントースターの斜視図である。
【図２】図１のＩＩ−ＩＩ拡大断面図である。
【図３】図１のＩＩＩ−ＩＩＩ拡大断面図である。
【図４】本願発明の実施の形態にかかるオーブントースターにおける温度調節器取付部の拡大断面図である。
【図５】本願発明の実施の形態にかかるオーブントースターにおける温度調節器取付部の変形例を示す拡大断面図である。
【図６】一般的な温度調節器の構造および作用を説明するもので、（イ）は概略構造図、（ロ）はＯＦＦ状態を示す図、（ハ）は設定温度変更時の状態を示す図である。
【図７】オーブントースターの調理室温度の変化を示す特性図である。
【符号の説明】
１は本体、２は調理室、３は機械室、４は内壁（隔壁）、７Ａは電気ヒータ（上ヒータ）、７Ｂは電気ヒータ（下ヒータ）、１６は温度調節器、１７は感熱棒部、１８は温度調節部、２６は通気路、２７は導風部材、２７ａは頂面、３０は挿通穴、３１は開口、４０は開口。[0001]
BACKGROUND OF THE INVENTION
[0002]
The present invention relates to an oven toaster capable of adjusting the cooking temperature.
[Prior art]
[0003]
In recent years, there is an increasing demand for users who want to use a general household oven toaster not only for toasting bread but also for cooking frozen foods, etc., and it is necessary to control the internal temperature with a temperature controller.
[0004]
By the way, when cooking frozen food, a large amount of heat is required for thawing, and thus the cooking chamber temperature needs to be increased. However, in the case of a general household oven toaster, the maximum set temperature of the temperature controller is about 220 ° C., so the cooking chamber temperature is maintained at 250 ° C. or higher as shown by the dotted line B in FIG. It has become difficult to do.
[0005]
In order to solve the above problems, a heat shield is provided between the heat-sensitive bar part of the temperature controller (projected into the cooking chamber) and the heater as the heating source, and the heater is moved to the heat-sensitive bar part. A proposal has been made that the cooking chamber temperature can be kept high by reducing the heat radiation (see Patent Document 1).
[0006]
[Patent Document 1]
Japanese Patent Application Laid-Open No. 11-76071.
[Problems to be solved by the invention]
[0007]
However, in the case of the above known example, as a result of the reduced sensitivity of the heat sensitive bar portion of the temperature controller, the cooking chamber temperature can be kept high, but as shown by the chain line C in FIG. / The hunting width to be turned off becomes large, which may adversely affect the cooking performance.
[0008]
The present invention has been made in view of the above points, and an object of the present invention is to reduce the hunting width while keeping the cooking chamber temperature high with a simple component configuration.
[Means for Solving the Problems]
[0009]
In this invention, as a 1st means for solving the said subject, the cooking chamber and machine room which were formed by dividing the inside of a main body were provided, and the electric heater and cooked material which become a heating source in the said cooking chamber side In the oven toaster comprising a temperature regulator for controlling the output of the electric heater on the machine room side , a heat sensitive bar portion of the temperature regulator is disposed on the machine room side. Extending from the outer surface of the inner wall of the cooking chamber to the vicinity of the electric heater, projecting toward the cooking chamber side on the cooking chamber wall, covering the root portion of the heat sensitive bar, and outside the cooking chamber and the outside the air guide member which is a chromatic and and the cooking chamber wall and separate constituting the air passage which communicates with provided the conductor wind member, while forming a through hole in which the heat sensitive rod part is loosely inserted, the cooking chamber The wall communicates with the inside of the air guide member and Forming an opening having a large opening area than the opening area of the insertion hole.
[0010]
By configuring as described above, energization to the electric heater is started, and when the temperature of the heat sensitive bar of the temperature controller rises due to radiant heat from the electric heater and exceeds the set temperature, the temperature controller is turned off. As a result, energization of the electric heater is stopped. At this time, since the heat-sensitive rod portion is cooled in the process of introducing the outside air into the cooking chamber through the air passage of the air guide member, the temperature controller is turned on and energization of the electric heater is started. That is, the time from when the temperature controller is turned off to when it is turned on is accelerated by the amount of cooling by the outside air. Therefore, the cumulative energization time for the electric heater is lengthened and the cumulative energization stop time is shortened, so that the cooking chamber temperature can be kept higher than the dotted line B or the chain line C as shown by the solid line A in FIG. At the same time, the hunting width can be kept small. In addition, when the energization of the electric heater is stopped, the outside air introduced from the ventilation path of the air guide member is likely to come into contact with the heat sensitive rod portion, and cooling of the heat sensitive rod portion is promoted. In addition, it is possible to form an air passage for introducing outside air by simply attaching an air guide member having a separate structure to the cooking chamber wall and forming an opening communicating with the interior of the air guide member on the cooking chamber wall. Can be configured easily. Furthermore, it becomes easy to introduce outside air from the opening of the cooking chamber wall into the ventilation path.
[0011]
In this invention, as a 2nd means for solving the said subject, it has the cooking chamber and machine room which divided and formed the inside of a main body, The electric heater and cooked material which become a heating source in the said cooking chamber side In the oven toaster comprising a temperature regulator for controlling the output of the electric heater on the machine room side, a heat sensitive bar portion of the temperature regulator is disposed on the machine room side. It extends from the outer surface of the inner wall of the cooking chamber to the vicinity of the electric heater, projects toward the cooking chamber side on the cooking chamber wall, covers the root portion of the heat-sensitive bar portion, and is external to the cooking chamber. An air guide member having an air passage communicating with the cooking chamber wall is provided integrally with the cooking chamber wall.
[0012]
By configuring as described above, energization to the electric heater is started, and when the temperature of the heat sensitive bar of the temperature controller rises due to radiant heat from the electric heater and exceeds the set temperature, the temperature controller is turned off. As a result, energization of the electric heater is stopped. At this time, since the heat-sensitive rod portion is cooled in the process of introducing the outside air into the cooking chamber through the air passage of the air guide member , the temperature controller is turned on and energization of the electric heater is started. That is, the time from when the temperature controller is turned off to when it is turned on is accelerated by the amount of cooling by the outside air. Therefore, the cumulative energization time for the electric heater is lengthened and the cumulative energization stop time is shortened, so that the cooking chamber temperature can be kept higher than the dotted line B or the chain line C as shown by the solid line A in FIG. At the same time, the hunting width can be kept small. In addition, the number of parts and the number of assembly steps can be reduced .
[0013]
In this invention, as a 3rd means for solving the said subject, the cooking chamber and machine room which were formed by dividing the inside of a main body were provided, and the electric heater and cooked material which become a heating source in the said cooking chamber side In the oven toaster comprising a temperature regulator for controlling the output of the electric heater on the machine room side, a heat sensitive bar portion of the temperature regulator is disposed on the machine room side. It extends from the outer surface of the inner wall of the cooking chamber to the vicinity of the electric heater, projects toward the cooking chamber side on the cooking chamber wall, covers the root portion of the heat-sensitive bar portion, and is external to the cooking chamber. the air duct member having a vent path for communicating provided, the air guide member, and the cooking chamber side and a generally frustoconical shape with the top surface and.
[0014]
By configuring as described above, energization to the electric heater is started, and when the temperature of the heat sensitive bar of the temperature controller rises due to radiant heat from the electric heater and exceeds the set temperature, the temperature controller is turned off. As a result, energization of the electric heater is stopped. At this time, since the heat-sensitive rod portion is cooled in the process of introducing the outside air into the cooking chamber through the air passage of the air guide member, the temperature controller is turned on and energization of the electric heater is started. That is, the time from when the temperature controller is turned off to when it is turned on is accelerated by the amount of cooling by the outside air. Therefore, the cumulative energization time for the electric heater is lengthened and the cumulative energization stop time is shortened, so that the cooking chamber temperature can be kept higher than the dotted line B or the chain line C as shown by the solid line A in FIG. At the same time, the hunting width can be kept small. In addition, it is easy to introduce outside air.
DETAILED DESCRIPTION OF THE INVENTION
[0015]
Preferred embodiments of the present invention will be described below with reference to the accompanying drawings.
[0016]
As shown in FIGS. 1 to 3, the oven toaster is configured to include a cooking chamber 2 and a machine chamber 3 formed by partitioning the inside of the main body 1 with a partition wall 4, and the cooking chamber 2. An opening 6 for taking in and out the food that is opened and closed by the door 5 is formed on the front side of the.
[0017]
On the cooking chamber 2 side, an electric heater (that is, an upper heater 7A and a lower heater 7B) serving as a heating source and a grill 8 on which food is placed are disposed. Both the upper heater 7A and the lower heater 7B are tubular heaters, and are installed between the partition wall 4 and the cooking chamber wall (not shown) facing the partition wall 4 so as to face each other vertically in the cooking chamber 2. Has been. The grill 8 is placed on a support rod 10 whose end is locked to an arc-shaped guide groove 9 formed on the partition wall 4 and a cooking chamber wall (not shown) facing the partition wall 4. It is arranged by. Further, the front end portion of the grill net 9 is locked to a locking piece 11 protruding from the door 5, and the grill net 8 guides to the guide groove 9 as the door 5 is opened and closed. It will be pulled out or pushed in.
[0018]
On the other hand, the front surface of the machine room 3 is an operation panel unit 15 provided with a temperature control knob 12 and a timer 13 for setting the cooking room temperature. A temperature controller 16 is provided.
[0019]
The structure and operation of the temperature controller 16, to explain with reference to FIG.
[0020]
As shown in FIG. 6 (a), the temperature controller 16 includes a heat sensitive bar portion 17 and a temperature adjusting portion 18, and the heat sensitive bar portion 17 is a pipe made of a high thermal expansion metal with a closed end. 19, a spring 20 welded to the open end of the pipe 19 and provided with an open / close insulator 21 at the tip, and an amber 22 made of a low thermal expansion metal that connects an intermediate portion of the spring 20 and the inside of the tip of the pipe 19. It is made up of.
[0021]
On the other hand, the temperature adjusting unit 18 includes a stationary spring 23 and a movable spring 24 each having contacts 23a and 24a that normally contact each other, and a shaft 25 that moves the springs 23 and 24 together. The distal end portion of the movable side spring 24 is configured to face the open / close insulator 21 of the spring 20. The springs 23 and 24 can be moved to the open / close insulator 21 side by screwing the shaft 25.
[0022]
In this temperature controller 16, when the heat sensitive rod portion 17 is heated, as shown in FIG. 6 (b), the pipe 19 is extended and its length Lp becomes Lp ', but the amber 22 is almost extended. The length remains Li. Then, the spring 20 is pulled by the amber 22, the open / close insulator 21 of the spring 20 pushes up the tip of the movable spring 24, the contacts 23a and 24a of the springs 23 and 24 are separated, and the temperature regulator 16 is turned off. .
[0023]
Further, when changing the set temperature of the temperature adjuster 16, as shown in FIG. 6C, the shaft 25 is screwed to turn the tip of the movable spring 24 and the opening / closing insulator 21 of the spring 20. Is changed to Lg ′ (for example, Lg> Lg ′), and the temperature regulator 16 is turned off at a temperature at which the displacement of the opening / closing insulator 21 becomes Lg ′.
[0024]
In the present embodiment, as shown in FIG. 4, the heat-sensitive rod portion 17 of the temperature controller 16 is provided on the upper heater 7 </ b> A from the outer surface of the partition wall 4 that partitions the cooking chamber 2 and the machine chamber 3. The partition 4 extends to the vicinity so as to be parallel to the upper heater 7 </ b> A, protrudes toward the cooking chamber 2, covers the root portion of the heat-sensitive rod portion 17, and the cooking chamber 2. An air guide member 27 having an air passage 26 communicating with the inside and the outside is attached. As described above, when the heat-sensitive rod portion 17 and the upper heater 7A are parallel, the radiant heat from the upper heater 7A is uniformly radiated to the heat-sensitive rod portion 17 and the radiation area is also increased. Will improve. It is desirable that the heat-sensitive bar portion 17 is extended as far as possible to the cooking chamber 2 side, and the length of the portion of the heat-sensitive bar portion 17 that protrudes from the air guide member 27 is the root (that is, from the air guide member 27). It is desirable that the length is longer than the length up to the temperature control unit 18).
[0025]
The air guide member 27 has a substantially truncated cone shape with the cooking chamber 2 side as a top surface 27a, and four locking pieces 28, 28,. It is attached by engaging with engagement holes 29, 29,. The top surface 27a of the air guide member 27 is formed with an insertion hole 30 into which the heat-sensitive rod portion 17 is loosely inserted, while the partition wall 4 communicates with the inside of the air guide member 27 so that the insertion is made. An opening 31 having an opening area larger than that of the hole 30 is formed. In addition, the opening area of the insertion hole 30 is set to such an extent that the heat-sensitive rod portion 17 does not come into contact with the insertion hole 30, and is desirably as small as possible. In this way, it becomes easy to introduce outside air from the opening 31 of the partition wall 4 to the ventilation path 26, and when the energization to the upper heater 7A is stopped, it is introduced from the ventilation path 26 of the air guide member 25 through the insertion hole 30. This makes it easier for the outside air to come into contact with the heat-sensitive rod portion 17 and promotes cooling of the heat-sensitive rod portion 17.
[0026]
The shaft 25 in the temperature adjuster 16 and the shaft 32 of the temperature adjusting operation knob 12 provided on the operation panel 15 are a gear 33 pivotally attached to the tip of the shaft 32 and the tip of the shaft 25. It is coupled so as to be able to transmit power by meshing with a gear 34 pivotally attached to the portion. As the temperature adjusting operation knob 12 is rotated, the shaft 25 is screwed and the temperature adjuster as described above. The set temperature of 16 can be changed (see FIG. 3). Reference numeral 35 is an outside air introduction hole for introducing outside air into the machine room 3, and 36 is an attachment member for attaching the gears 33, 34 and the temperature controller 16.
[0027]
With the configuration described above, energization of the heater is started, and when the temperature of the heat sensitive bar portion 17 of the temperature controller 16 rises and exceeds the set temperature due to radiant heat from the upper heater 7A, the temperature controller 16 The power supply to the upper heater 7A is stopped by the OFF operation. At this time, since the heat-sensitive bar portion 17 is cooled in the process of introducing the outside air into the cooking chamber 2 through the air passage 26 of the air guide member 27, the temperature controller 16 is turned on to the upper heater 7A. Is energized. That is, the time from when the temperature controller 16 is turned off to when the temperature regulator 16 is turned on is accelerated by the amount cooled by the outside air. Accordingly, the cumulative energization time for the upper heater 7A becomes longer and the cumulative energization stop time becomes shorter, and the temperature of the cooking chamber 2 is kept higher than that of the dotted line B or chain line C as shown by the solid line A in FIG. And the hunting width can be kept small.
[0028]
Further, in this case, the air guide passage 27 for introducing the outside air can be formed simply by attaching the air guide member 27 having a separate structure to the partition wall 4 and forming the opening 31 communicating with the interior of the air guide member 27 in the partition wall 4. As a result, the air passage 26 can be configured easily.
[0029]
Furthermore, in this case, since the heat-sensitive rod portion 4 and the air guide member 27 can be provided by using the partition wall 4 that partitions the cooking chamber 2 and the machine chamber 3, it is not necessary to change the main body structure, thereby reducing the cost. Can be planned.
[0030]
By the way, as shown in FIG. 4, the upper heater 7 </ b> A is disposed in the heat-resistant glass tube 38, the insulator 37 attached to the partition wall 4, the heat-resistant glass tube 38 having one end fixed to the insulator 37. The heating element 39 includes a heating part 39a that generates heat by energization and a non-heating part 39b that serves as a power feeding part to the heating part 39a.
[0031]
In this embodiment, the amount of protrusion of the air guide member 27 (that is, the distance from the partition wall 4 to the top surface 27a of the air guide member 27) is D, and the heating element 39 of the upper heater 7A from the partition wall 4 is D. When the distance to the tip of the non-heat generating portion 39b (that is, the distance to the heat generating portion 39a of the heat generating body 39) is D ′, it is desirable that D ≦ D ′. If it does in this way, the radiant heat from upper heater 7A will be efficiently radiated to heat sensitive rod part 17, and temperature sensitive accuracy will improve.
[0032]
In addition, as shown in FIG. 5, the said air guide member 27 can also be comprised integrally with the said partition 4, and when comprised, the number of parts and an assembly man-hour can be reduced. In this case, the bottom of the air guide member 27 is open, and the opening 40 for introducing outside air is formed.
【The invention's effect】
[0033]
According to the first means of the present invention, there is provided a cooking chamber and a machine room formed by partitioning the inside of the main body, and an electric heater serving as a heating source and a cooking net are placed on the cooking chamber side. In the oven toaster in which a temperature controller for controlling the output of the electric heater is disposed on the machine room side , the heat sensitive bar portion of the temperature controller is disposed on the inner wall of the cooking chamber. An air passage that extends from the outer surface to the vicinity of the electric heater, protrudes toward the cooking chamber side on the cooking chamber wall, covers a root portion of the heat-sensitive rod portion, and communicates with the cooking chamber and the outside. the organic was and the cooking chamber wall and separate with each other to produce the air duct member is provided, the conductor wind member, while forming a through hole in which the heat sensitive rod part is loosely inserted in the cooking chamber wall, the baffle member and communicating with and larger than the opening area of the insertion hole Forming an opening having an open area, when the energization of the electric heater temperature controller and OFF operation is stopped, the heat-sensitive in the course of the outside air is introduced into the cooking chamber via the air passage of the air duct member Since the rod is cooled, the time from when the temperature controller is turned off until it is turned on is accelerated by the amount of cooling by the outside air, and the cumulative energization time to the electric heater is lengthened and integrated. The energization stop time is shortened, the cooking chamber temperature can be kept high, and the hunting width can be kept small. In addition, when the energization of the electric heater is stopped, the outside air introduced from the air passage of the air guide member can easily come into contact with the heat sensitive rod portion, and the cooling of the heat sensitive rod portion is promoted. In addition, it is possible to form an air passage for introducing outside air by simply attaching an air guide member having a separate structure to the cooking chamber wall and forming an opening communicating with the interior of the air guide member on the cooking chamber wall. There is also an effect that can be configured easily. Furthermore, there is an effect that it becomes easy to introduce outside air from the opening of the cooking chamber wall into the ventilation path.
[0034]
According to the second means of the present invention, there is provided a cooking chamber and a machine room formed by partitioning the inside of the main body, and an electric heater serving as a heating source and a cooking net placed on the cooking chamber side. In the oven toaster in which a temperature controller for controlling the output of the electric heater is disposed on the machine room side, the heat sensitive bar portion of the temperature controller is disposed on the inner wall of the cooking chamber. An air passage extending from the outer surface to the vicinity of the electric heater and projecting toward the cooking chamber side on the cooking chamber wall so as to cover a root portion of the heat-sensitive rod portion and communicate with the cooking chamber and the outside. When the temperature regulator is turned off and energization to the electric heater is stopped, outside air is introduced into the cooking chamber through the air passage of the wind guiding member. In the process, the heat sensitive bar is cooled. As a result, the time from when the temperature controller is turned off to when it is turned on is accelerated by the amount of cooling by the outside air, the cumulative energization time to the electric heater is lengthened, and the cumulative energization stop time is shortened. There is an effect that the cooking chamber temperature can be kept high and the hunting width can be kept small. Moreover, there is an effect that the number of parts and the number of assembling steps can be reduced.
[0035]
According to the third means of the present invention, there is provided a cooking chamber and a machine room formed by partitioning the inside of the main body, and an electric heater serving as a heating source and a cooking net placed on the cooking chamber side. In the oven toaster in which a temperature controller for controlling the output of the electric heater is disposed on the machine room side, the heat sensitive bar portion of the temperature controller is disposed on the inner wall of the cooking chamber. An air passage extending from the outer surface to the vicinity of the electric heater and projecting toward the cooking chamber side on the cooking chamber wall so as to cover a root portion of the heat-sensitive rod portion and communicate with the cooking chamber and the outside. the air duct member having provided, the air guide member, the cooking chamber side and a generally frustoconical shape with the top surface, when the temperature controller is energized to the electric heater is stopped by OFF operation, the wind guide Outside air is introduced into the cooking chamber through the air passages of the components. Since the heat sensitive bar is cooled in the process, the time from when the temperature controller is turned off until it is turned on is accelerated by the amount of cooling by the outside air, and the cumulative energization time to the electric heater And the cumulative energization stop time is shortened, so that the cooking chamber temperature can be kept high, and the hunting width can be kept small. Moreover, there is an effect that the introduction of outside air is facilitated.
[Brief description of the drawings]
FIG. 1 is a perspective view of an oven toaster according to an embodiment of the present invention.
FIG. 2 is an enlarged sectional view taken along the line II-II in FIG.
FIG. 3 is an enlarged sectional view taken along the line III-III in FIG.
FIG. 4 is an enlarged cross-sectional view of a temperature controller mounting portion in the oven toaster according to the embodiment of the present invention.
FIG. 5 is an enlarged cross-sectional view showing a modified example of the temperature controller mounting portion in the oven toaster according to the embodiment of the present invention.
6A and 6B are diagrams for explaining the structure and operation of a general temperature controller. FIG. 6A is a schematic structural diagram, FIG. 6B is a diagram showing an OFF state, and FIG. FIG.
FIG. 7 is a characteristic diagram showing changes in the cooking chamber temperature of the oven toaster.
[Explanation of symbols]
1 is a main body, 2 is a cooking chamber, 3 is a machine room, 4 is an inner wall (partition wall), 7A is an electric heater (upper heater), 7B is an electric heater (lower heater), 16 is a temperature controller, and 17 is a thermal bar. , 18 is a temperature control unit, 26 is an air passage, 27 is an air guide member, 27a is a top surface, 30 is an insertion hole, 31 is an opening, and 40 is an opening.

Claims

A cooking room and a machine room formed by dividing the body are provided, and an electric heater serving as a heating source and a grill net for placing the food to be placed are disposed on the cooking room side, while the machine room On the side, an oven toaster comprising a temperature controller for controlling the output of the electric heater, wherein the heat sensitive bar portion of the temperature controller is disposed in the vicinity of the electric heater from the outer surface of the inner wall of the cooking chamber. as well as extended to the said cooking chamber wall, said projects toward the cooking chamber side to cover the root portion of the thermosensitive rod section, possess the cooking chamber and the ventilation path for communicate with the outside and the cooking chamber An air guide member configured separately from the wall is provided , and the air guide member is formed with an insertion hole into which the heat-sensitive rod portion is loosely inserted, while the cooking chamber wall communicates with the inside of the air guide member. And an opening area having an opening area larger than the opening area of the insertion hole. Toaster oven, characterized in that the formation of the.

A cooking room and a machine room formed by dividing the body are provided, and an electric heater serving as a heating source and a grill net for placing the food to be placed are disposed on the cooking room side, while the machine room On the side, an oven toaster comprising a temperature controller for controlling the output of the electric heater, wherein the heat sensitive bar portion of the temperature controller is disposed in the vicinity of the electric heater from the outer surface of the inner wall of the cooking chamber. And an air guide member that has a ventilation path that protrudes toward the cooking chamber side, covers a root portion of the heat-sensitive rod portion, and communicates with the cooking chamber and the outside. It features and be Luo over oven toaster that provided in the cooking chamber wall and integral.

A cooking room and a machine room formed by dividing the body are provided, and an electric heater serving as a heating source and a grill net for placing the food to be placed are disposed on the cooking room side, while the machine room On the side, an oven toaster comprising a temperature controller for controlling the output of the electric heater, wherein the heat sensitive bar portion of the temperature controller is disposed in the vicinity of the electric heater from the outer surface of the inner wall of the cooking chamber. In addition, the cooking chamber wall is provided with an air guide member that protrudes toward the cooking chamber side, covers a root portion of the heat-sensitive rod portion, and has an air passage that communicates with the cooking chamber and the outside. , the air guide member, characterized and to Luo chromatography oven toaster in that the cooking chamber side and a generally frustoconical shape with the top surface.