JP3653712B2

JP3653712B2 - Method for manufacturing portable insulated container

Info

Publication number: JP3653712B2
Application number: JP01897096A
Authority: JP
Inventors: 州央松田; 毅桑名; 嘉也西野; 泰彦小宮; 賢二重田
Original assignee: Thermos KK
Current assignee: Thermos KK
Priority date: 1996-02-05
Filing date: 1996-02-05
Publication date: 2005-06-02
Anticipated expiration: 2016-02-05
Also published as: JPH09206226A

Description

【０００１】
【発明の属する技術分野】
本発明は、携帯用魔法瓶、携帯用ランチジャー、携帯用断熱調理器具に用いる携帯用断熱容器の製造方法に関する。
【０００２】
【従来の技術】
従来、この種の断熱容器として、例えば実公昭５９−３８１９２号公報には、断熱材層を備えた壁体により形成された箱体内に、蓄熱体と面発熱体よりなる保温用熱源が設けられた保温箱が開示されている。この保温箱において、蓄熱体への蓄熱は面発熱体により行っているので、蓄熱を簡単に行うことができ、また蓄熱材を全体的に加熱でき温度分布に局部的なむらを生じないものとなり、被保温物の蓄熱材からの伝熱による保温も均一な温度にすることができるというものである。また、実公昭６２−２１２５６号公報には、金属製の内外筒間が真空にされて真空断熱層が形成され、上記内筒底部にヒータが設けられている電気加熱式魔法瓶において、上記ヒータの近傍に蓄熱材を介在せしめたことを特徴とする電気加熱式魔法瓶が開示されている。この電気加熱式魔法瓶は、内筒底部に設けられたヒータの近傍に蓄熱材（蓄熱板）を設けた構成なので、ヒータの熱の逃散を阻止できるばかりでなく、蓄熱を積極的に再利用でき、熱効率に優れ、長時間保温が可能である。また、実開昭６４−２３９３３号公報には、断熱容器の任意部位に蓄熱ユニットを設け、この蓄熱ユニット内に６５〜８０℃の凝固点を有するパラフィンろうやマイクロクリスタリンワックスからなる蓄熱形の蓄熱材料を密封したことを特徴とする食品保存器が開示されている。この食品保存器は蓄熱ユニット内に蓄熱材を設けた構造なので、ヒータの熱の逃散を阻止できるばかりでなく、積極的に再利用できるようになっている。
【０００３】
【発明が解決しようとする課題】
しかしながら、これら従来技術には、それぞれ解決すべき課題があった。実公昭５９−３８１９２号公報記載の保温箱は、断熱材を用いた断熱構造であり携帯には不便である。すなわち、この保温箱では断熱材の材質として合成樹脂製発泡体、木材、グラスウール、石綿ボード、パーティクルボード等が挙げられており、これらの断熱材料で実用上十分な断熱効果を得るには、断熱材の厚みを厚くしなければならず、保温箱が大きく、重くなってしまう。さらに、これらの断熱材を用いて構成した場合、蓄熱材の蓄熱温度を８０〜１００℃近傍の温度とした場合、合成樹脂発泡体や木材は熱で変形し易く、また容器外側が熱くなるおそれがあり、前記温度域での使用が困難であった。またこの保温箱は面発熱体の位置が蓄熱材の上下いずれか一方または両方としているが、このような配置では、潜熱蓄熱材は熱伝導率が低いので蓄熱が遅く、実際には温度むらが生じ、温度制御し難かった。実公昭６２−２１２５６号公報記載の電気加熱式魔法瓶および実開昭６４−２３９３３号公報記載の食品保存器では、その構造から考えると、蓄熱材に蓄熱した熱は底を通じて外部に損失され被保温物に伝わる効率が悪くなるおそれがあった。また、底からの伝熱により外筒が熱せられるおそれがあった。また、これら従来例に関しては、温度制御手段等、効率よく蓄熱するシステムについては記載されていない。さらに、蓄熱材が蓄熱した後の感知及び報知システムについても記載されていない。
【０００４】
本発明は前記事情に鑑みてなされたもので、以下の事項を達成することを課題としている。
1 電気供給のある場所から電気供給の無い場所に簡単に携帯できるようにする。
2 断熱効果を高くするとともに、断熱容器を軽量、コンパクト化する。
3 蓄熱材蓄熱時及び放熱時の熱効率を良くするとともに、容器外面の温度が高くならず、安全に使用できるようにする。
4 温度制御手段等を用い、効率よく蓄熱する。
5 蓄熱材の蓄熱完了を感知して報知または表示し、蓄熱完了が容易に判るようにする。
【０００５】
【課題を解決するための手段】
本発明の請求項１記載の発明は、金属製の有底筒状の内容器と外容器がそれらの間に断熱層を形成して接合一体化されてなる金属製の断熱容器本体を作製し、潜熱蓄熱材と、該蓄熱材の温度を感知して制御される加熱手段とを備えた蓄熱ユニットを作製し、該蓄熱ユニットを前記断熱容器本体内に挿入、固定し、かつ前記断熱容器本体の側面または底面に設けた前記内容器と外容器を貫通する貫通孔または貫通管を通して、前記蓄熱ユニットの加熱手段と制御手段の配線を断熱容器本体外に導出し、前記蓄熱ユニットを前記断熱容器の内容器底部に挿入、固定することを特徴とする携帯用断熱容器の製造方法である。請求項２に係る発明は、潜熱蓄熱材と、該蓄熱材の温度を感知して制御される加熱手段とを有底筒状の金属製容器に密閉収容して蓄熱ユニットを作製し、該蓄熱ユニットの金属製容器上端に内筒を接合して内容器を形成し、該内容器と外容器とを接合一体化し、次いで内容器と外容器の間に断熱層を形成して断熱容器本体を形成し、かつ前記断熱容器本体の側面または底面に設けた前記内容器と外容器を貫通する貫通孔または貫通管を通して、前記蓄熱ユニットの加熱手段と制御手段の配線を断熱容器本体外に導出することを特徴とする携帯用断熱容器の製造方法である。
【０００６】
【発明の実施の形態】
以下、図面を参照して本発明の実施形態を説明する。
（第１の実施形態：携帯用魔法瓶）図１は本発明に係る携帯用断熱容器の第１の実施形態としての携帯用魔法瓶を示すものである。この携帯用魔法瓶は、金属製の断熱容器100と、該断熱容器100の肩部から上部開口に固定された合成樹脂製の肩部材101と、この肩部材101の上部を覆うように設けられた着脱可能なコップ102と、断熱容器100の上部開口に装着された合成樹脂製の中栓103と、断熱容器100の底部に固定された合成樹脂製の底部材105と、前記肩部材101と底部材105の間に設けられた折り畳み式の取手104と、断熱容器100の内底部に配設された蓄熱ユニットＡとを備えて構成されている。
【０００７】
前記断熱容器100は、金属製の外筒115の下端にチップ管117を有する有底円筒状の金属底部材116を溶接してなる外容器と、それよりも小径の金属製の内筒113の下端に蓄熱ユニットＡの外装をなす有底円筒状の金属製容器108の上端を溶接してなる内容器とをそれぞれの上端部で接合一体化し、かつこれら外容器と内容器の間の空間を真空断熱層100aとしてなるものである。内容器底部に接合された蓄熱ユニットＡは、金属製容器108に管状の電流導入端子107を接合し、所定温度に維持可能とされた面状の自己温度制御ヒータ109と温度ヒューズ110とを、容器内に浮いた状態となるように電流導入端子107に固定するとともに、該ヒータ109の電源用配線を該端子107を通して導出し、かつ該容器108内にパラフィン等の潜熱型の蓄熱材106を充填し、その上に金属製の蓋112を被せ、該蓋112の上端を金属製容器108の上端と一緒に内筒113下端に溶接して構成されている。この電流導入端子107の先端は、外筒115下端に接合された金属製底板116を貫通し気密に接合され、該端子107内を通して導出されたヒータ109の電源用配線は底部材105に設けられたジャック118に接続されている。
【０００８】
肩部材101にはコップ102が螺着されるとともに、中栓103が螺着されている。ここで例示する中栓は上部中央のボタンを押圧することにより、下端に垂設された弁体を移動させて、内部の液体（被保温物）の注出可能／停止を切換えるワンタッチ式中栓である。なおこの中栓103に代えて、注出口を回して切換える回転式中栓を用いてもよい。また、底部材105には前記ジャック（雄）118が設けられている。このジャック118には、電源に接続されたジャック（雌）119が着脱容易に接続される。このジャック（雌）119には、通電状態を点灯により表示するための放電管120が設けられている。
【０００９】
この携帯用魔法瓶は、コップ102と中栓103を外し、断熱容器100内に湯、茶などの被保温物を充填し、電源のある場所では、電源に接続されたジャック（雌）119を魔法瓶のジャック（雄）118に挿入してヒータ109に通電することで内部を一定温度に保持することができる。蓄熱材106の蓄熱終了はジャック（雌）119に配した放電管120の消灯により判断できる。そして、保温状態にある該魔法瓶を持ち運ぶ際にはジャック（雌）119を外せば携帯可能となる。携帯時には、真空断熱とされた断熱容器100によって保温されるとともに、蓄熱材106が放熱して被保温物を高温に保ち得るので、被保温物は冷めにくく、長時間携帯した後でも熱い湯や茶を飲用することができる。なお、潜熱型蓄熱材106はパラフィンに限定されず、実使用温度域で液体−固体の相変化を伴って熱エネルギーを蓄熱可能な材料であれば使用可能である。
【００１０】
次に、この携帯用魔法瓶の製造方法を説明する。まず、電流導入端子107を溶接した金属製容器108の内部に、面状の自己温度制御ヒータ109と、温度ヒューズ110を固定する。それらの固定は、導電性の針金等を用い、自己温度制御ヒータ109と温度ヒューズ110が容器108から浮くように電流導入端子107に半田付けする。次いで、蓄熱材106を液体の状態で金属製容器108内に流し込み、その後金属製容器108の蓋112を被せて蓄熱ユニットＡとし、溶接位置114にて金属製容器108と蓋112の上端を内筒113下端に溶接して内容器を形成する。次に蓄熱ユニットＡを備える内容器と、外筒115を口元接合する。さらに、金属底部材116を外筒115下端に溶接する。この時電流導入端子107と金属底部材116も溶接によって接合する。上記のように形成された内容器と外容器の間隙を密閉空間とし、金属底部材116に設けたチップ管117から真空排気し、その後該チップ管117を圧着封止して蓄熱材入り断熱容器100を作製する。次いで、断熱容器100内部からの配線コード121を底部材105に具備されたジャック（雄）118と接続し、底部材105を断熱容器100に固定する。その後、肩部材101、コップ102、中栓103及び取手104を取付け、蓄熱材入り携帯用魔法瓶とする。
【００１１】
本例の携帯用魔法瓶は、底面または側面のごく一部を貫通させて必要な配線を設け、他部は断熱されている断熱容器100を用いることにより、熱損失を極力抑えて、蓄熱材106の蓄熱時に電気効率よく蓄熱することができ、電源供給が無い場所で使用する蓄熱材106の放熱時は熱効率よく保温が行える。また任意に設定した温度で潜熱型の蓄熱材106を徐々に暖めるようにすることにより、急激に暖めるのと違い、昇華等による容器の内部圧力上昇を抑制できる。また蓄熱材106を簡単にその融点に応じた温度、例えば融点＋約２０℃程度で蓄熱できる。また電源さえ供給すれば自動的に蓄熱できることにより、経済的な夜間電力などを利用して蓄熱し、手間を感じず使用できる。また、蓄熱材106が蓄熱したことを表示する放電管120を設けたことにより、蓄熱材106が蓄熱されたことを簡単に判断でき、蓄熱材106が蓄熱されているかどうか危惧する必要がなくなる。また電気の配線コードが携帯用魔法瓶と簡単に着脱できることにより、蓄熱作業が終った魔法瓶は、被保温物を入れ、電源供給のコードを抜くだけで、難しい手続き無しで手軽に携帯することができる。さらに、本例による製造方法は、蓄熱材106と、この蓄熱材106の温度を感知して制御される加熱手段とを備えた蓄熱ユニットＡを作製し、この蓄熱ユニットＡと、内筒113とを接合して断熱容器100の内容器を作製することにより、製造工程が簡略化できる。
【００１２】
（第２の実施形態：携帯用ランチジャー）図２は本発明に係る携帯用断熱容器の第２の実施形態としての携帯用ランチジャーを示すものである。この携帯用ランチジャーは、内容器39と外容器40がそれらの間に断熱層32aを形成して接合一体化されてなる金属製の断熱容器32と、この断熱容器32の上端部に固定された合成樹脂製の肩部材33と、該肩部材33の上部に螺着された合成樹脂製の外蓋部材34と、断熱容器32の底部に固定された合成樹脂製の底部材37と、断熱容器32の内底部に配設された蓄熱ユニットＢと、底部材37内に配設された制御ユニット10及び磁石式コンセント13と、断熱容器32の一側面に取り付けられた箸ケース35と、断熱容器32に外蓋部材34を装着した状態で形成される内部空間に積層収納された３つの収納容器36,45,46とを備えて構成されている。
【００１３】
前記断熱容器32は、有底筒状の内容器39と外容器40とをそれぞれの間に隙間を持たせた状態で上端部を接合一体化するとともに、内容器39と外容器40の底部接触部20を圧接して接合し、さらに圧接された底部接触部20の中央に貫通孔12を形成した構成になっている。内容器39の外容器40との間には、空気よりも熱伝導率の小さなガス、好ましくはキセノン、クリプトン、アルゴンからなる群より選択される少なくとも１種の低熱伝導率ガスが充填封入されている。
【００１４】
前記蓄熱ユニットＢは、内容器39底部に収納可能な大きさで、その下部にヒータ49を取り付ける面を形成するために縮径された金属製容器43と、該金属製容器43の縮径部上面側に固定されたシリコンラバーヒータ49と、該金属製容器43内に固定された蓄熱材温度センサとしてのサーミスタ素子16と、該金属製容器43内に充填された潜熱型の蓄熱材38と、該蓄熱材38の上面を覆う金属製の蓋51とを備えている。該蓋51はその周縁部が金属製容器43上端部に巻き締めによって気密に接合されている。また、金属製容器43の縮径部には温度ヒューズ52が設けられ、ヒータ49の下側にはヒータ温度制御用サーミスタ素子50が設けられている。また、金属製容器43の底部には、サーミスタ素子16の配線を導出するための導入端子15が固定されている。この端子15を通して金属製容器43から導出されたサーミスタ素子16の配線と、温度ヒューズ52及びヒータ温度制御用サーミスタ素子50を介してヒータ49に接続された配線は、金属製容器43の底部を通り、断熱容器32底部に形成した貫通孔12を通して、断熱容器32から導出され、底部材37内に配設した制御ユニット10に接続されている。
【００１５】
前記底部材３７には、断熱容器32底部に形成した貫通孔12を通して断熱容器32から導出されたサーミスタ素子16の配線と、温度ヒューズ52及びヒータ温度制御用サーミスタ素子50を介してヒータ49に接続された配線が接続された制御ユニット10と、該制御ユニット10に接続された電源供給用の磁石式コンセント13と、同じく制御ユニット10に接続され、通電の停止によって点灯するＬＥＤ14とが設けられている。
【００１６】
この携帯用ランチジャーは、それぞれの収納容器36,45,46にそれぞれ調理済み食品を入れ、これらをランチジャー内に積み重ねて収納し、外蓋部材34を螺着して密封し、磁石式コンセント13を電源に接続してヒータ49に通電することで内部を一定温度に保持することができる。蓄熱材38の蓄熱終了はＬＥＤ14の点灯により容易に判断できる。そして電源を外せば携帯可能となる。携帯時には、断熱容器32によって保温されるとともに、蓄熱材38が放熱して内部を高温に保ち得るので、収納容器36,45,46内の被保温物は冷めにくく、長時間携帯した後でも熱い調理食品を食することができる。
【００１７】
次に、この携帯用ランチジャーの製造方法を説明する。導入端子15を具備した金属製容器43の内部に、面状のシリコンラバーヒータ49を固定し、また、容器43内部側面にサーミスタ素子16を取り付ける。さらに温度ヒューズ52とヒータ温度制御用サーミスタ素子50を容器43外側に隙間なく固定する。次いで、パラフィン等の潜熱型の蓄熱材38を液体の状態で金属製容器43内に流し込み、液体の状態のまま前記容器43の蓋51を被せて、巻き締めにより気密に封止する。次いで電気部品に配線を施し、蓄熱ユニットＢを作製する。また、断熱容器32は以下の方法で作製する。内容器39と外容器40を低熱伝導率のガス雰囲気中で口元接合するとともに、内容器39と外容器40の底部接触部20を圧接する。その後、圧接した底部20に圧接面よりも小さな貫通孔12をボール盤により形成する。蓄熱ユニット53の配線コード17を断熱容器32に形成した貫通孔管12から通し、蓄熱ユニット53を断熱容器32に挿入し、その後、保護金属板44を挿入して、部分的にろう付けにより接合する。断熱容器32からの配線コード17は制御ユニット10に接続し、接続ユニットからは蓄熱完了を点灯にて知らせるＬＥＤ14と電源供給の磁石式コンセント13に配線する。上記の制御ユニット10、ＬＥＤ14及びコンセント13は底部材37に固定し、その底部材37は断熱容器32に固定する。その後、肩部材33、外蓋部材34、箸ケース35を取り付け、収納容器36,46,45を入れて携帯用ランチジャーを作製する。
【００１８】
（第３の実施形態：携帯用断熱調理器）図３は本発明に係る携帯用断熱容器の第３の実施形態としての携帯用断熱調理器を示すものである。この携帯用断熱調理器は、内容器54aと外容器54bがそれらの間に断熱層54cを形成して接合一体化されてなる金属製の断熱容器54と、この断熱容器54の上端部に固定された合成樹脂製の肩取手部材58と、該断熱容器54の上部開口に装着された合成樹脂製の外蓋部材63と、断熱容器54の底部に固定された合成樹脂製の底部材59と、断熱容器54内に収納された内鍋ユニット55と、断熱容器54の内容器内底部に配設された蓄熱ユニットＣと、底部材59内に配設された制御ユニット57とを備えて構成されている。
【００１９】
前記断熱容器54は、有底円筒状の内容器54aと、底部に排気孔を有する有底円筒状の外容器54bとをそれぞれの上端部で接合一体化し、該排気孔を通して内外容器間を真空排気し、その排気孔の周囲を金属製の封止板をろう付けして封止することによって形成される。この断熱容器54の底部には、内外容器を貫通する配線導出用の貫通管71が設けられている。前記肩取手部材58は、断熱容器54の上端部に固定された基部に揺動可能な取手を取り付けたものである。前記蓄熱ユニットＣは、金属容器下部材21と、該下部材21にヒータ支持部材22を介して固定されたシーズヒータ65と、同じく該下部材21にセンサ支持部材23を介して固定された蓄熱材温度センサとしてのサーミスタ素子90と、シーズヒータ65に固定されたヒータ温度センサとしてのサーミスタ素子66と、この金属容器下部材21と接合されて蓄熱材充填用の密閉空間を形成する金属容器上部材64と、該密閉空間内に充填されたパラフィン等の潜熱型の蓄熱材68とを備えて構成されている。ヒータ65および各素子90,66の配線は、金属容器下部材21に形成された穴に設けられたパッキン70を介して導出され、さらに断熱容器54に設けられた貫通管71を通して断熱容器54底部に導出され、温度ヒューズ67を介して制御ユニット57に接続されている。
【００２０】
底部材59には、前記制御ユニット57の他、電源に接続されたコンセント（雌）75が接続される磁石式コンセント（雄）74が取り付けられ、また制御ユニット57に接続されて蓄熱完了時に点灯するＬＣＤ73が設けられている。前記内鍋ユニット55は、金属製の内鍋60と、該内鍋60の上部開口を塞ぐ蓋61と、該蓋61に固定されたツマミ62と、該内鍋60の上端部に揺動可能に取り付けられた図示略の取手とを備えている。
【００２１】
この断熱調理器は、内鍋60に食品素材等を入れて調理し、半調理品が入った内鍋ユニット55を断熱容器54内に収納し、外蓋部材63を被せるとともに、磁石式コンセント74に電源を接続してヒータ65に通電することで内部を一定温度に保持し、内鍋ユニット55内の半調理品を断熱調理し、さらに完成品を保温することができる。蓄熱材68の蓄熱終了はＬＣＤ73の点灯により容易に判断できる。そして電源を外せば携帯可能となる。携帯時には、断熱容器54によって保温されるとともに、蓄熱材68が放熱して内部を高温に保ち得るので、内鍋60内の調理食品は冷めにくく、長時間携帯した後でも熱い調理食品を食することができる。
【００２２】
次に、この携帯用断熱調理器の製造方法を説明する。まず、以下の手順によって蓄熱ユニットＣを作製する。ヒータ支持部材22とセンサ支持部材23を固定した金属容器下部材21内部に、シーズヒータ65を該ヒータ支持部材22に取り付け、該シーズヒータ65にサーミスタ素子66を隙間無く固定しさらにサーミスタ素子90をネジ止めにより該センサ支持部材23に取り付ける。シーズヒータ65、サーミスタ素子66,90の配線を導入端子69に配線する。次に、シーズヒータ65、サーミスタ素子66,90を具備した容器下部材21に容器上部材64をろう付け等により接合し、導入端子69を取り付けるための小孔より液化したパラフィン68を注入する。注入後、電流導入端子69を容器下部材21に溶接し、封止する。また、断熱容器54は、内容器54aと外容器54bとをそれぞれの上端部で接合一体化し、次いで底部を上向きにして真空加熱炉内に置き、外容器54bの底部に形成した排気孔の周囲にろう材を配し、その上に封止板を置き、真空雰囲気中で加熱し、排気孔を通して内外容器間の空気を排気した後、排気孔を封止板で封止して作製される。作製された断熱容器54の底部に形成した貫通管71に前記蓄熱ユニットＣの配線コード72を通し、パッキン70により水密構造とした状態で蓄熱ユニット56を断熱容器54に挿入し、無理嵌めにより固定する。断熱容器54からの配線コード72を温度ヒューズ67を経由して底部材59に固定した制御ユニット57に接続し、制御ユニット57からは蓄熱完了を表示報知させるＬＣＤ73と、電源供給の磁石式コンセント74に配線する。上記のＬＣＤ73とコンセント74も底部材59に固定し、底部材59を断熱容器54に無理嵌めにより嵌合する。その後、肩取手部材58、外蓋部材63を取り付け、内鍋ユニット55を入れて携帯用断熱調理器とする。
【００２３】
【実施例】
実施例１：携帯用魔法瓶図１に示す携帯用魔法瓶を作製した。まず、電流導入端子107を溶接したステンレス鋼からなる金属製容器108の内部に、１００℃に維持することができる面状の自己温度制御ヒータ109と、温度ヒューズ110を固定した。それらの固定は、導電性の針金111を用い、自己温度制御ヒータ109と温度ヒューズ110が容器108から浮くように導入端子107に半田付けで行った。次いで、蓄熱材として、融点が約８０℃のパラフィン106を液体の状態で金属製容器108内に流し込み、金属製容器108の蓋112を被せて、内容器113とともに溶接位置にて溶接した。次に蓄熱材入りの内容器113と外容器115を口元接合した。さらに、金属底部材116を外容器115に溶接した。この時、導入端子107と金属底部材116も溶接によって接合した。上記のように形成された内容器113と外容器115の間隙を密閉空間とし、金属底部材116の設けたチップ管117から真空排気し、圧着封止して蓄熱材入り断熱容器100を作製した。断熱容器100内部からの配線コード121をポリプロピレン製底部材105に具備されたジャック（雄）118と接続し、底部材105を断熱容器100に無理嵌めにより嵌合した。その後、肩部材101、コップ102、中栓103及び取手104を取付け、蓄熱材入り携帯用魔法瓶とした。ジャック（雌）119と放電管120を配線し、自己温度制御ヒータ109に電気を供給した。その後、自己温度制御性により約１００℃に維持された面状の自己温度制御ヒータ109により、パラフィン106は危険なく溶解し、蓄熱を行うことができた。この時、パラフィン106は自己温度制御ヒータ109と密着し、さらに断熱容器100に入っていることから非常に効率よく蓄熱できた。また、蓄熱作業を夜間に行ったので、格安な電気料金を利用できた。また、パラフィン106の蓄熱完了は、放電管120が消灯したことにより、容易に判断できた。ジャック118をジャック119から外し、携帯可能となった。パラフィンが１５０ｇ入った断熱容器内に被保温物として、（★）℃の湯１０００ｍｌを入れ、６時間蓋を開けずに携帯したところ、蓄熱材を用いない従来品より５℃高い温度で保温できた。また、携帯時にも外面が熱くならず安全であった。
【００２４】
実施例２：携帯用ランチジャー図２に示す構成の携帯用ランチジャーを作製した。電流導入端子15を具備したアルミニウムからなる金属製容器43の内部に面状のシリコンラバーヒータ49をネジ止めした。また、容器43内部側面に蓄熱材温度センサとしてサーミスタ素子16を取り付けた。次に温度ヒューズ52とヒータ温度制御用サーミスタ素子50を容器43外側に隙間なく確実に固定した。次いで、融点が８０℃のパラフィン38を液体の状態で金属製容器43内に流し込み、液体の状態のまま前記容器43の蓋51を被せて、巻き締めにより気密に封止した。次いで電気部品に配線を施し、蓄熱ユニットＢを完成させた。また、断熱容器32は以下の方法で作製した。内容器39と外容器40を低熱伝導率のガス雰囲気中で口元接合するとともに、内容器39と外容器40の底部接触部20を圧接する。その後、圧接した底部20に圧接面よりも小さな貫通孔12をボール盤により形成した。蓄熱ユニット53の配線コード17を断熱容器32につくられた貫通孔管12から通し、蓄熱ユニット53を断熱容器32に挿入し、その後、保護金属板44を挿入して、部分的にろう付けにより接合した。断熱容器32からの配線コード17は制御ユニット10に接続し、接続ユニットからは蓄熱完了を点灯にて知らせるＬＥＤ14と電源供給の磁石式コンセント13に配線した。上記の制御ユニット10、ＬＥＤ14及びコンセント13はポリプロピレン製の底部材37に固定し、その底部材37は断熱容器32に無理嵌めにより嵌合した。その後、肩部材33、外蓋部材34、箸ケース35を取り付け、収納容器36,46,45を入れて携帯用ランチジャーを作製した。磁石式コンセント13から電源を供給し、シリコンラバーヒータ49に電気を供給した。その後、制御ユニット10により約１００℃に維持された面状のシリコンラバーヒータ49により、パラフィン38は危険なく溶融し、蓄熱を行うことができた。このとき、パラフィン38はシリコンラバーヒータ49と密着し、さらに断熱容器32に入っていることから非常に効率よく蓄熱できた。サーミスタ素子16が蓄熱材の温度を検知し、その温度が蓄熱材の融点かそれより数度高くなった時点で、シリコンラバーヒータ49の通電を止めると同時に蓄熱完了のＬＥＤ14を点灯させた。これにより、蓄熱完了と判断し、コンセント13を外し、携帯可能となった。パラフィンが２００ｇ入った断熱容器内に、被保温物を入れた収納容器36,46,45を入れ、持ち運び、６時間経過後、内部の被保温物の品温を測定した結果、蓄熱材を用いない従来品より約７℃高かった。また、携帯時に外面が熱くならず安全であった。
【００２５】
実施例３：携帯用断熱調理器図３に示す携帯用断熱調理器を作製した。まず、以下の手順によって蓄熱ユニット56を作製した。ヒータ支持部材22とセンサ支持部材23を具備したアルミニウム製の金属容器下部材21内部に、シーズヒータ65をネジ止めにより該ヒータ支持部材22に取り付け、該シーズヒータ65にヒータ温度センサとしてサーミスタ素子66を隙間無く金属バンドで取り付け、さらに蓄熱材温度センサとしてサーミスタ素子90をネジ止めにより該センサ支持部材23に取り付けた。シーズヒータ65、サーミスタ素子66,90の配線を導入端子69に配線した。次に、シーズヒータ65、サーミスタ素子66,90を具備した容器下部材21に容器上部材64をろう付けにより接合し、電流導入端子69を取り付けるための小孔より液化したパラフィン68を注入する。注入後、電流導入端子69を容器下部材21に溶接し、封止して蓄熱ユニットＣを形成した。前記蓄熱ユニットＣの配線コード72を、別途作製した断熱容器54の底部につくられた貫通管71に通し、パッキン70により水密構造とした状態で蓄熱ユニットＣを断熱容器54に挿入した。断熱容器54からの配線コード72を温度ヒューズ67を経由してフェノール樹脂製底部材59に固定した制御ユニット57に接続し、制御ユニット57からは蓄熱完了を表示報知させるＬＣＤ73と、電源供給の磁石式コンセント74（雄）に配線した。上記のＬＣＤ73とコンセント74も底部材59に固定した。その底部材59は断熱容器54に無理嵌めにより嵌合した。その後、肩取手部材58、外蓋部材63を取り付け、内鍋ユニット55を入れて携帯用断熱調理器とした。磁石式コンセント74から電源を供給し、シーズヒータ65に電気を供給した。その後、制御ユニット57により約１００℃に維持されたシーズヒータ65により、パラフィン68は危険無く溶融し、蓄熱を行うことができた。このとき、パラフィン６８はシーズヒータ65と密着し、さらに断熱容器54に入っていることから非常に効率よく蓄熱できた。サーミスタ素子90が蓄熱材の温度を検知し、パラフィン68の温度が該蓄熱材の融点かそれより数度高くなった時点で、シーズヒータ65の通電を止め、蓄熱完了をＬＣＤ73により表示した。これにより、蓄熱完了と判断し、コンセント75をコンセント74から外し、携帯可能とした。パラフィンが２５０ｇ入った断熱容器54内に被調理物２５００ｇを入れ、蓋61をした内鍋ユニット55を入れ、断熱調理を継続しながら持ち運びをしたところ、６時間後には蓄熱材を用いない従来品よりも１０℃高い温度で断熱調理が完成していた。また、携帯時にも外面が熱くならず安全であった。
【００２６】
【発明の効果】
以上説明したように、本発明に係る携帯用断熱容器は、断熱性のある金属製二重壁容器の底面または側面のごく一部を貫通させて必要な配線を設け、他部は断熱されている金属製二重壁容器を用いることにより、熱損失を極力抑えて、蓄熱材の蓄熱時に電気効率よく蓄熱することができ、電源供給が無い場所で使用する蓄熱材の放熱時は熱効率よく保温または調理が行える。また、温度制御手段により任意に設定した温度で潜熱蓄熱材を徐々に暖めるようにすることにより、急激に暖めるのと違い、昇華等による容器の内部圧力上昇を抑制できる。また、潜熱蓄熱材を簡単に、その融点に応じた温度、例えば融点＋約２０℃程度で蓄熱できる。また、電源さえ供給すれば自動的に蓄熱できることにより、経済的な夜間電力などを利用して蓄熱し、手間を感じず使用できる。また、蓄熱材が蓄熱したことを感知及び報知または表示する手段を設けたことにより、蓄熱材が蓄熱されたことを該手段により簡単に判断でき、蓄熱材が蓄熱されているかどうか危惧する必要がなくなる。また、加熱手段や制御手段に供給する電気の配線コードが携帯用断熱容器と簡単に着脱でき、或いは断熱容器または底部材内に簡単に収納できるようにしたことにより、蓄熱作業が終った断熱容器は、被保温物を入れ、電源供給のコードを抜くだけで、難しい手続き無しで手軽に携帯することができる。
【図面の簡単な説明】
【図１】図１は本発明に係る携帯用魔法瓶を例示する断面図である。
【図２】図２は本発明に係る携帯用ランチジャーを例示する断面図である。
【図３】図３は本発明に係る携帯用断熱調理器を例示する断面図である。
【符号の説明】
１００，３２，５４……断熱容器
Ａ，Ｂ，Ｃ……蓄熱ユニット
１０６，３８，６８……蓄熱材
１０９，４９，６５……ヒータ（加熱手段）
１０７，７１……貫通管
１２……貫通孔[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a portable heat insulating container for use in a portable thermos, a portable launcher, and a portable insulated cookware. Manufacturing method About.
[0002]
[Prior art]
Conventionally, as a heat insulating container of this type, for example, Japanese Utility Model Publication No. 59-38192, a heat insulating heat source composed of a heat storage body and a surface heating element is provided in a box formed by a wall body having a heat insulating material layer. A warming box is disclosed. In this heat insulation box, heat storage to the heat storage body is performed by a surface heating element, so heat storage can be performed easily, and the heat storage material can be heated as a whole, and local unevenness in temperature distribution does not occur. In addition, the heat retention by heat transfer from the heat storage material of the object to be heated can also be made uniform. Japanese Utility Model Publication No. 62-21256 discloses an electric heating thermos in which a vacuum heat insulating layer is formed by evacuating a metal inner and outer cylinders, and a heater is provided at the bottom of the inner cylinder. An electric heating type thermos characterized in that a heat storage material is interposed in the vicinity is disclosed. This electric heating thermos has a structure in which a heat storage material (heat storage plate) is provided in the vicinity of the heater provided at the bottom of the inner cylinder, so that not only can the heat escape from the heater be prevented, but the heat storage can be actively reused. Excellent thermal efficiency and can be kept warm for a long time. Japanese Utility Model Laid-Open No. 64-23933 discloses a heat storage type heat storage material provided with a heat storage unit at an arbitrary part of a heat insulating container and made of paraffin wax or microcrystalline wax having a freezing point of 65 to 80 ° C. in the heat storage unit. A food preserving device characterized in that is sealed is disclosed. Since this food storage device has a structure in which a heat storage material is provided in the heat storage unit, not only can the heat escape from the heater be prevented, but also it can be actively reused.
[0003]
[Problems to be solved by the invention]
However, each of these conventional techniques has problems to be solved. The heat insulation box described in Japanese Utility Model Publication No. 59-38192 is a heat insulating structure using a heat insulating material and is inconvenient to carry. That is, in this heat insulation box, synthetic resin foam, wood, glass wool, asbestos board, particle board, etc. are mentioned as the material of the heat insulating material, and in order to obtain a practically sufficient heat insulating effect with these heat insulating materials, heat insulating The thickness of the material must be increased, and the heat insulation box becomes large and heavy. Furthermore, when it comprises using these heat insulating materials, when the heat storage temperature of a heat storage material shall be the temperature of 80-100 degreeC, a synthetic resin foam and wood are easy to deform | transform with heat, and there exists a possibility that the container outer side may become hot. It was difficult to use in the temperature range. Also, in this heat insulation box, the position of the surface heating element is one or both of the upper and lower sides of the heat storage material, but in such an arrangement, the latent heat storage material has a low thermal conductivity, so the heat storage is slow, and actually the temperature unevenness It was difficult to control the temperature. In the electric heating type thermos bottle described in Japanese Utility Model Publication No. 62-21256 and the food storage device described in Japanese Utility Model Publication No. 64-23933, the heat stored in the heat storage material is lost to the outside through the bottom and is kept warm. There was a possibility that the efficiency transmitted to the object would deteriorate. In addition, the outer cylinder may be heated by heat transfer from the bottom. In addition, regarding these conventional examples, a system for efficiently storing heat, such as temperature control means, is not described. Furthermore, it does not describe the sensing and notification system after the heat storage material has stored heat.
[0004]
This invention is made | formed in view of the said situation, and makes it a subject to achieve the following matters.
1 Make it easy to carry from a place with electricity to a place without electricity.
2 Increase the heat insulation effect and make the heat insulation container lighter and more compact.
3 Thermal storage material The thermal efficiency during heat storage and heat dissipation should be improved, and the temperature on the outer surface of the container should not be raised so that it can be used safely.
4 Use heat control means to store heat efficiently.
5 Detect and notify the completion of heat storage of the heat storage material, so that the completion of heat storage can be easily identified.
[0005]
[Means for Solving the Problems]
The invention according to claim 1 of the present invention is to produce a metal heat insulating container body in which a metal bottomed cylindrical inner container and an outer container are joined and integrated by forming a heat insulating layer therebetween. Producing a heat storage unit comprising a latent heat storage material and a heating means controlled by sensing the temperature of the heat storage material, inserting and fixing the heat storage unit in the heat insulation container body, and the heat insulation container body The heating means and the control means of the heat storage unit are led out of the heat insulating container main body through a through hole or a through pipe that penetrates the inner container and the outer container provided on the side surface or the bottom surface of the heat insulating container, It is a manufacturing method of the portable heat insulation container characterized by inserting and fixing to the inner container bottom part. According to a second aspect of the invention, a latent heat storage material and a heating means that is controlled by sensing the temperature of the heat storage material are hermetically housed in a bottomed cylindrical metal container to produce a heat storage unit, and the heat storage unit An inner cylinder is joined to the upper end of the metallic container of the unit to form an inner container, the inner container and the outer container are joined and integrated, and then a heat insulating layer is formed between the inner container and the outer container to form a heat insulating container body. The wiring of the heat storage unit and the control means of the heat storage unit is led out of the heat insulation container body through a through hole or a through pipe that is formed and penetrates the inner container and the outer container provided on the side surface or bottom surface of the heat insulation container body. It is a manufacturing method of the portable heat insulation container characterized by the above-mentioned.
[0006]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
(First Embodiment: Portable Thermos) FIG. 1 shows a portable thermos as a first embodiment of a portable heat insulating container according to the present invention. The portable thermos was provided so as to cover a metal heat insulating container 100, a shoulder member 101 made of a synthetic resin fixed to the upper opening from the shoulder portion of the heat insulating container 100, and an upper portion of the shoulder member 101. A removable cup 102, a synthetic resin middle plug 103 attached to the upper opening of the heat insulating container 100, a synthetic resin bottom member 105 fixed to the bottom of the heat insulating container 100, and the shoulder member 101 and the bottom The foldable handle 104 provided between the members 105 and the heat storage unit A disposed on the inner bottom of the heat insulating container 100 are configured.
[0007]
The heat insulating container 100 includes an outer container formed by welding a bottomed cylindrical metal bottom member 116 having a tip tube 117 to the lower end of a metal outer cylinder 115, and a metal inner cylinder 113 having a smaller diameter than that. An inner container formed by welding the upper end of a bottomed cylindrical metal container 108 that forms the exterior of the heat storage unit A at the lower end is joined and integrated at each upper end, and a space between the outer container and the inner container is formed. The vacuum heat insulating layer 100a is formed. A heat storage unit A joined to the bottom of the inner container joins a tubular current introduction terminal 107 to a metal container 108, and includes a planar self-temperature control heater 109 and a thermal fuse 110 that can be maintained at a predetermined temperature. While being fixed to the current introduction terminal 107 so as to float in the container, the power supply wiring of the heater 109 is led out through the terminal 107, and a latent heat type heat storage material 106 such as paraffin is placed in the container 108. Filled and covered with a metal lid 112, the upper end of the lid 112 is welded to the lower end of the inner cylinder 113 together with the upper end of the metal container. The front end of the current introduction terminal 107 penetrates the metal bottom plate 116 joined to the lower end of the outer cylinder 115 and is airtightly joined. The power supply wiring of the heater 109 led out through the terminal 107 is provided on the bottom member 105. Connected to jack 118.
[0008]
A cup 102 is screwed to the shoulder member 101, and an inner plug 103 is screwed. The internal plug illustrated here is a one-touch type internal plug that moves the valve body suspended at the lower end by pressing the button in the upper center, and switches between enabling / discharging of the internal liquid (insulated material). It is. Instead of the inner plug 103, a rotary inner plug that rotates by turning the spout may be used. The bottom member 105 is provided with the jack (male) 118. A jack (female) 119 connected to a power source is easily connected to the jack 118. The jack (female) 119 is provided with a discharge tube 120 for displaying an energized state by lighting.
[0009]
This portable thermos removes the cup 102 and the inner cap 103, fills the heat-insulated container 100 with heat insulation such as hot water and tea, and in a place where there is a power source, the jack (female) 119 connected to the power source is the thermos It is possible to keep the inside at a constant temperature by inserting into the jack (male) 118 and energizing the heater 109. The end of heat storage of the heat storage material 106 can be determined by turning off the discharge tube 120 disposed on the jack (female) 119. Then, when carrying the thermos bottle in the heat-retaining state, it can be carried by removing the jack (female) 119. When carrying it, it is kept warm by the heat insulating container 100 that is vacuum insulated, and the heat storage material 106 can dissipate heat and keep the heated object at a high temperature. You can drink tea. The latent heat type heat storage material 106 is not limited to paraffin, and any material can be used as long as it can store thermal energy with a liquid-solid phase change in the actual use temperature range.
[0010]
Next, the manufacturing method of this portable thermos is demonstrated. First, a planar self-temperature control heater 109 and a thermal fuse 110 are fixed inside a metal container 108 to which a current introduction terminal 107 is welded. For fixing them, a conductive wire or the like is used and soldered to the current introduction terminal 107 so that the self-temperature control heater 109 and the thermal fuse 110 float from the container 108. Next, the heat storage material 106 is poured into the metal container 108 in a liquid state, and then the cover 112 of the metal container 108 is covered to form the heat storage unit A. At the welding position 114, the upper ends of the metal container 108 and the cover 112 are placed inside. An inner container is formed by welding to the lower end of the tube 113. Next, the inner container provided with the heat storage unit A and the outer cylinder 115 are joined at the mouth. Further, the metal bottom member 116 is welded to the lower end of the outer cylinder 115. At this time, the current introduction terminal 107 and the metal bottom member 116 are also joined by welding. The space between the inner container and the outer container formed as described above is used as a sealed space, evacuated from the tip tube 117 provided on the metal bottom member 116, and then the tip tube 117 is crimped and sealed to contain the heat storage material. Make 100. Next, the wiring cord 121 from the inside of the heat insulating container 100 is connected to a jack (male) 118 provided on the bottom member 105, and the bottom member 105 is fixed to the heat insulating container 100. Thereafter, the shoulder member 101, the cup 102, the inner plug 103, and the handle 104 are attached to form a portable thermos containing a heat storage material.
[0011]
The portable thermos of this example is provided with the necessary wiring by penetrating only a part of the bottom surface or side surface, and by using a heat insulating container 100 in which the other part is insulated, the heat loss is minimized as much as possible. Therefore, the heat can be stored efficiently while the heat storage material 106 used in a place where there is no power supply is radiated. Further, by gradually warming the latent heat type heat storage material 106 at an arbitrarily set temperature, it is possible to suppress an increase in the internal pressure of the container due to sublimation or the like, unlike sudden warming. Further, the heat storage material 106 can be easily stored at a temperature corresponding to the melting point thereof, for example, the melting point + about 20 ° C. In addition, since it can automatically store heat as long as power is supplied, it can store heat using economical nighttime power, etc., and can be used without any hassle. Further, by providing the discharge tube 120 that indicates that the heat storage material 106 has stored heat, it is possible to easily determine that the heat storage material 106 has stored heat, and there is no need to worry about whether the heat storage material 106 is storing heat. In addition, since the electrical wiring cord can be easily attached to and detached from the portable thermos, the thermos after the heat storage work has been completed can be easily carried without any difficult procedures simply by inserting the insulation and unplugging the power supply cord. . Further, the manufacturing method according to the present example produces a heat storage unit A including a heat storage material 106 and a heating means that senses and controls the temperature of the heat storage material 106. The heat storage unit A, the inner cylinder 113, By manufacturing the inner container of the heat insulating container 100 by joining the manufacturing process, the manufacturing process can be simplified.
[0012]
(Second Embodiment: Portable Launcher) FIG. 2 shows a portable launcher as a second embodiment of a portable heat insulating container according to the present invention. This portable launcher is fixed to a metal heat insulating container 32 in which an inner container 39 and an outer container 40 are joined and integrated by forming a heat insulating layer 32a therebetween, and an upper end portion of the heat insulating container 32. A synthetic resin shoulder member 33, a synthetic resin outer cover member 34 screwed onto the upper portion of the shoulder member 33, a synthetic resin bottom member 37 fixed to the bottom of the heat insulating container 32, and heat insulation A heat storage unit B disposed in the inner bottom of the container 32; a control unit 10 and a magnetic outlet 13 disposed in the bottom member 37; a chopstick case 35 attached to one side of the heat insulating container 32; The container 32 includes three storage containers 36, 45, and 46 stacked and stored in an internal space formed with the outer lid member 34 attached to the container 32.
[0013]
The heat insulating container 32 has a bottomed cylindrical inner container 39 and an outer container 40 that are joined and integrated at the upper end with a gap between them, and the bottom contact between the inner container 39 and the outer container 40. The parts 20 are joined by pressure contact, and the through hole 12 is formed in the center of the bottom contact part 20 that is further pressure contacted. Between the inner container 39 and the outer container 40, a gas having a lower thermal conductivity than air, preferably at least one low thermal conductivity gas selected from the group consisting of xenon, krypton, and argon is filled and sealed. Yes.
[0014]
The heat storage unit B has a size that can be stored in the bottom of the inner container 39, and has a metal container 43 that is reduced in diameter to form a surface to which the heater 49 is attached, and a reduced diameter part of the metal container 43. Silicon rubber heater 49 fixed on the upper surface side, thermistor element 16 as a heat storage material temperature sensor fixed in the metal container 43, and a latent heat type heat storage material 38 filled in the metal container 43, And a metal lid 51 covering the upper surface of the heat storage material 38. The periphery of the lid 51 is airtightly joined to the upper end of the metal container 43 by tightening. In addition, a thermal fuse 52 is provided at the reduced diameter portion of the metal container 43, and a heater temperature control thermistor element 50 is provided below the heater 49. An introduction terminal 15 for leading the wiring of the thermistor element 16 is fixed to the bottom of the metal container 43. The wiring of the thermistor element 16 led out from the metal container 43 through the terminal 15 and the wiring connected to the heater 49 via the temperature fuse 52 and the heater temperature control thermistor element 50 pass through the bottom of the metal container 43. The heat insulating container 32 is led out through the through hole 12 formed at the bottom of the heat insulating container 32 and connected to the control unit 10 disposed in the bottom member 37.
[0015]
The bottom member 37 is connected to the heater 49 through the wiring of the thermistor element 16 led out from the heat insulating container 32 through the through hole 12 formed in the bottom of the heat insulating container 32, and the temperature fuse 52 and the thermistor element 50 for heater temperature control. A control unit 10 to which the wired wiring is connected, a magnetic outlet 13 for power supply connected to the control unit 10, and an LED 14 that is also connected to the control unit 10 and is lit when the energization is stopped. Yes.
[0016]
In this portable launcher, cooked foods are put in the respective storage containers 36, 45, 46, and these are stacked and stored in the launcher, and the outer lid member 34 is screwed and sealed, and a magnetic outlet. By connecting 13 to a power source and energizing the heater 49, the inside can be maintained at a constant temperature. The end of the heat storage of the heat storage material 38 can be easily determined by turning on the LED 14. And if you turn off the power, it will be portable. When carrying it, it is kept warm by the heat insulating container 32, and the heat storage material 38 can dissipate heat and keep the inside at a high temperature, so that the heat-retained objects in the storage containers 36, 45, 46 are hard to cool and are hot even after being carried for a long time. You can eat cooked food.
[0017]
Next, the manufacturing method of this portable launcher will be described. A planar silicon rubber heater 49 is fixed inside the metal container 43 provided with the introduction terminal 15, and the thermistor element 16 is attached to the inner side surface of the container 43. Further, the temperature fuse 52 and the heater temperature control thermistor element 50 are fixed to the outside of the container 43 without any gap. Next, a latent heat type heat storage material 38 such as paraffin is poured into the metal container 43 in a liquid state, and the lid 51 of the container 43 is covered in a liquid state and hermetically sealed by winding. Next, wiring is applied to the electrical component to produce the heat storage unit B. The heat insulating container 32 is produced by the following method. The inner container 39 and the outer container 40 are joined at the mouth in a gas atmosphere having low thermal conductivity, and the inner container 39 and the bottom contact portion 20 of the outer container 40 are pressed together. Thereafter, a through-hole 12 smaller than the pressure contact surface is formed in the pressure-contacted bottom portion 20 by a drilling machine. Pass the wiring cord 17 of the heat storage unit 53 through the through-hole tube 12 formed in the heat insulating container 32, insert the heat storage unit 53 into the heat insulating container 32, and then insert the protective metal plate 44 and partially join by brazing To do. The wiring cord 17 from the heat insulating container 32 is connected to the control unit 10 and wired from the connection unit to the LED 14 and the magnetic outlet 13 for supplying power to notify completion of heat storage by lighting. The control unit 10, the LED 14, and the outlet 13 are fixed to the bottom member 37, and the bottom member 37 is fixed to the heat insulating container 32. Thereafter, the shoulder member 33, the outer lid member 34, and the chopstick case 35 are attached, and the storage containers 36, 46, and 45 are put therein to produce a portable launcher.
[0018]
(Third Embodiment: Portable Insulated Cooker) FIG. 3 shows a portable insulated cooker as a third embodiment of a portable insulated container according to the present invention. This portable heat insulating cooker is fixed to the metal heat insulating container 54 in which the inner container 54a and the outer container 54b are joined and integrated by forming a heat insulating layer 54c therebetween, and fixed to the upper end of the heat insulating container 54. A synthetic resin shoulder handle member 58, a synthetic resin outer cover member 63 attached to the upper opening of the heat insulating container 54, and a synthetic resin bottom member 59 fixed to the bottom of the heat insulating container 54. And an inner pan unit 55 housed in the heat insulating container 54, a heat storage unit C disposed in the inner container inner bottom portion of the heat insulating container 54, and a control unit 57 disposed in the bottom member 59. Has been.
[0019]
The heat insulating container 54 is formed by joining and integrating a bottomed cylindrical inner container 54a and a bottomed cylindrical outer container 54b having an exhaust hole at the bottom at each upper end, and vacuuming between the inner and outer containers through the exhaust hole. It is formed by exhausting and sealing the periphery of the exhaust hole by brazing a metal sealing plate. At the bottom of the heat insulating container 54, a through pipe 71 for leading out the wiring penetrating the inner and outer containers is provided. The shoulder handle member 58 has a swingable handle attached to a base fixed to the upper end portion of the heat insulating container 54. The heat storage unit C includes a metal container lower member 21, a sheathed heater 65 fixed to the lower member 21 via a heater support member 22, and a heat storage fixed to the lower member 21 via a sensor support member 23. A thermistor element 90 as a material temperature sensor, a thermistor element 66 as a heater temperature sensor fixed to the sheathed heater 65, and a metal container that is joined to the metal container lower member 21 to form a sealed space for filling a heat storage material A member 64 and a latent heat type heat storage material 68 such as paraffin filled in the sealed space are provided. The wiring of the heater 65 and each element 90, 66 is led out through the packing 70 provided in the hole formed in the metal container lower member 21, and further through the through pipe 71 provided in the heat insulating container 54, the bottom of the heat insulating container 54 And is connected to the control unit 57 via the temperature fuse 67.
[0020]
In addition to the control unit 57, the bottom member 59 is attached with a magnetic outlet (male) 74 to which an outlet (female) 75 connected to a power source is connected, and is connected to the control unit 57 and lights up when heat storage is completed. An LCD 73 is provided. The inner pot unit 55 is made of a metal inner pot 60, a lid 61 for closing the upper opening of the inner pot 60, a knob 62 fixed to the lid 61, and swingable at the upper end of the inner pot 60. And a handle (not shown) attached to the head.
[0021]
This insulated cooker puts food ingredients etc. in the inner pot 60 and cooks it, stores the inner pot unit 55 containing the half-cooked product in the insulated container 54, covers the outer lid member 63, and magnetic outlet 74 By connecting the power supply to the heater 65 and energizing the heater 65, the inside can be maintained at a constant temperature, the half-cooked product in the inner pot unit 55 can be heat-insulated, and the finished product can be kept warm. The end of heat storage of the heat storage material 68 can be easily determined by turning on the LCD 73. And if you turn off the power, it will be portable. When carrying it, it is kept warm by the heat insulating container 54, and the heat storage material 68 can dissipate heat and keep the inside at a high temperature, so that the cooked food in the inner pot 60 is hard to cool and eats hot cooked food even after being carried for a long time. be able to.
[0022]
Next, the manufacturing method of this portable insulated cooker will be described. First, the heat storage unit C is produced by the following procedure. A sheathed heater 65 is attached to the heater supporting member 22 inside the metal container lower member 21 to which the heater supporting member 22 and the sensor supporting member 23 are fixed, and the thermistor element 66 is fixed to the sheathed heater 65 without any gap, and the thermistor element 90 is further mounted. The sensor support member 23 is attached by screwing. The sheath heater 65 and thermistor elements 66 and 90 are wired to the introduction terminal 69. Next, the container upper member 64 is joined to the container lower member 21 having the sheathed heater 65 and the thermistor elements 66 and 90 by brazing or the like, and liquefied paraffin 68 is injected from a small hole for attaching the introduction terminal 69. After the injection, the current introduction terminal 69 is welded to the container lower member 21 and sealed. The heat insulating container 54 is formed by joining and integrating the inner container 54a and the outer container 54b at their upper ends, and then placing them in a vacuum heating furnace with the bottom facing upward, around the exhaust holes formed in the bottom of the outer container 54b. A brazing material is placed on the plate, a sealing plate is placed thereon, heated in a vacuum atmosphere, the air between the inner and outer containers is exhausted through the exhaust hole, and then the exhaust hole is sealed with the sealing plate. . The wiring cord 72 of the heat storage unit C is passed through the through pipe 71 formed at the bottom of the manufactured heat insulation container 54, and the heat storage unit 56 is inserted into the heat insulation container 54 in a state of being watertight by the packing 70 and fixed by forcible fitting. To do. The wiring cord 72 from the heat insulating container 54 is connected to the control unit 57 fixed to the bottom member 59 via the thermal fuse 67, and the control unit 57 displays an LCD 73 for informing and indicating the completion of heat storage, and a magnetic outlet 74 for supplying power. Wire to. The LCD 73 and the outlet 74 are also fixed to the bottom member 59, and the bottom member 59 is forcibly fitted to the heat insulating container 54. After that, the shoulder handle member 58 and the outer lid member 63 are attached, and the inner pot unit 55 is put into a portable heat-insulating cooker.
[0023]
【Example】
Example 1: Portable thermos The portable thermos shown in FIG. 1 was produced. First, a planar self-temperature control heater 109 capable of being maintained at 100 ° C. and a thermal fuse 110 were fixed inside a metal vessel 108 made of stainless steel to which a current introduction terminal 107 was welded. They were fixed by soldering to the introduction terminal 107 using a conductive wire 111 so that the self-temperature control heater 109 and the thermal fuse 110 floated from the container 108. Next, paraffin 106 having a melting point of about 80 ° C. as a heat storage material was poured into the metal container 108 in a liquid state, covered with the lid 112 of the metal container 108, and welded together with the inner container 113 at the welding position. Next, the inner container 113 containing the heat storage material and the outer container 115 were joined at the mouth. Further, the metal bottom member 116 was welded to the outer container 115. At this time, the introduction terminal 107 and the metal bottom member 116 were also joined by welding. The gap between the inner container 113 and the outer container 115 formed as described above was used as a sealed space, and the tip tube 117 provided with the metal bottom member 116 was evacuated and pressure-sealed to produce a heat insulating material-containing heat insulating container 100. . The wiring cord 121 from the inside of the heat insulating container 100 was connected to a jack (male) 118 provided on the polypropylene bottom member 105, and the bottom member 105 was fitted into the heat insulating container 100 by forcible fitting. Thereafter, the shoulder member 101, the cup 102, the inner plug 103, and the handle 104 were attached to form a portable thermos containing a heat storage material. Jack (female) 119 and discharge tube 120 were wired and electricity was supplied to self-temperature control heater 109. Thereafter, the paraffin 106 was dissolved without danger by the planar self-temperature control heater 109 maintained at about 100 ° C. by self-temperature controllability, and heat could be stored. At this time, since the paraffin 106 was in close contact with the self-temperature control heater 109 and was in the heat insulating container 100, the heat could be stored very efficiently. In addition, the heat storage work was done at night, so cheap electricity charges were available. In addition, the completion of the heat storage of the paraffin 106 can be easily determined because the discharge tube 120 is turned off. Jack 118 was removed from Jack 119, making it portable. Placed in a heat-insulated container with 150 g of paraffin as a heat-retaining material, (*) 1000 ° C. hot water (1000 ml) was carried without opening the lid for 6 hours. It was. In addition, the outer surface was safe when it was carried.
[0024]
Example 2: Portable launcher A portable launcher having the structure shown in FIG. 2 was produced. A planar silicon rubber heater 49 was screwed to the inside of a metal container 43 made of aluminum provided with a current introduction terminal 15. Further, the thermistor element 16 was attached to the inner side surface of the container 43 as a heat storage material temperature sensor. Next, the temperature fuse 52 and the heater temperature control thermistor element 50 were securely fixed to the outside of the container 43 without a gap. Next, paraffin 38 having a melting point of 80 ° C. was poured into the metal container 43 in a liquid state, covered with the lid 51 of the container 43 in a liquid state, and hermetically sealed by winding. Subsequently, wiring was given to the electrical component, and the heat storage unit B was completed. Further, the heat insulating container 32 was produced by the following method. The inner container 39 and the outer container 40 are joined at the mouth in a gas atmosphere with low thermal conductivity, and the inner container 39 and the bottom contact portion 20 of the outer container 40 are pressed together. Thereafter, a through hole 12 smaller than the pressure contact surface was formed in the pressure-contacted bottom portion 20 with a drilling machine. Pass the wiring cord 17 of the heat storage unit 53 through the through-hole tube 12 formed in the heat insulating container 32, insert the heat storage unit 53 into the heat insulating container 32, and then insert a protective metal plate 44, partially by brazing Joined. The wiring cord 17 from the heat insulating container 32 was connected to the control unit 10 and wired from the connection unit to the LED 14 and the magnetic outlet 13 for supplying power to notify completion of heat storage by lighting. The control unit 10, the LED 14, and the outlet 13 were fixed to a polypropylene bottom member 37, and the bottom member 37 was fitted into the heat insulating container 32 by forcible fitting. After that, the shoulder member 33, the outer lid member 34, and the chopstick case 35 were attached, and the storage containers 36, 46, and 45 were put therein to produce a portable launcher. Power was supplied from the magnetic outlet 13, and electricity was supplied to the silicon rubber heater 49. Thereafter, the paraffin 38 was melted without danger by the planar silicon rubber heater 49 maintained at about 100 ° C. by the control unit 10, and heat could be stored. At this time, since the paraffin 38 was in close contact with the silicon rubber heater 49 and was further contained in the heat insulating container 32, the heat could be stored very efficiently. When the thermistor element 16 detects the temperature of the heat storage material and the temperature becomes the melting point of the heat storage material or several degrees higher than that, the energization of the silicon rubber heater 49 is stopped and the LED 14 indicating the completion of heat storage is turned on. As a result, it was determined that the heat storage was completed, the outlet 13 was removed, and it became portable. Put storage container 36, 46, 45 containing heat-insulated material in an insulated container containing 200 g of paraffin, carry it, and after 6 hours, measure the temperature of the internal heat-retained material. It was about 7 ° C higher than the conventional product. In addition, the outer surface was safe when it was carried.
[0025]
Example 3: Portable insulated cooker The portable insulated cooker shown in FIG. 3 was produced. First, the heat storage unit 56 was produced by the following procedure. A sheathed heater 65 is attached to the heater supporting member 22 by screwing inside an aluminum metal container lower member 21 having a heater supporting member 22 and a sensor supporting member 23, and the thermistor element 66 serving as a heater temperature sensor is attached to the sheathed heater 65. Was attached with a metal band without a gap, and the thermistor element 90 as a heat storage material temperature sensor was attached to the sensor support member 23 by screwing. The sheath heater 65 and thermistor elements 66 and 90 were wired to the introduction terminal 69. Next, the container upper member 64 is joined to the container lower member 21 having the sheathed heater 65 and the thermistor elements 66 and 90 by brazing, and liquefied paraffin 68 is injected from a small hole for attaching the current introduction terminal 69. After the injection, the current introduction terminal 69 was welded to the container lower member 21 and sealed to form the heat storage unit C. The wiring cord 72 of the heat storage unit C was passed through a through pipe 71 formed at the bottom of a separately manufactured heat insulating container 54, and the heat storage unit C was inserted into the heat insulating container 54 in a state where a watertight structure was formed by the packing 70. The wiring cord 72 from the heat insulating container 54 is connected to the control unit 57 fixed to the phenol resin bottom member 59 via the temperature fuse 67, and the control unit 57 displays an LCD 73 to notify the completion of heat storage, and a magnet for supplying power Wired to type outlet 74 (male). The LCD 73 and the outlet 74 are also fixed to the bottom member 59. The bottom member 59 was fitted into the heat insulating container 54 by forcible fitting. After that, the shoulder handle member 58 and the outer lid member 63 were attached, and the inner pot unit 55 was put into a portable heat insulating cooker. Power was supplied from a magnetic outlet 74, and electricity was supplied to the sheathed heater 65. Thereafter, the paraffin 68 was melted without danger by the sheathed heater 65 maintained at about 100 ° C. by the control unit 57, and heat could be stored. At this time, since the paraffin 68 was in close contact with the sheathed heater 65 and further contained in the heat insulating container 54, heat could be stored very efficiently. The thermistor element 90 detects the temperature of the heat storage material, and when the temperature of the paraffin 68 becomes equal to or higher than the melting point of the heat storage material, the energization of the sheathed heater 65 is stopped and the heat storage completion is displayed on the LCD 73. As a result, it was determined that the heat storage was completed, and the outlet 75 was removed from the outlet 74 to be portable. Put 2500g of paraffin in an insulated container 54, put an inner pot unit 55 with a lid 61, and carry it while continuing the insulation cooking. After 6 hours, no conventional heat storage material is used. Heat insulation cooking was completed at a temperature 10 ° C. higher than that. In addition, the outer surface was safe when it was carried.
[0026]
【The invention's effect】
As described above, the portable heat insulating container according to the present invention is provided with necessary wiring through a very small part of the bottom surface or side surface of the metal double wall container having heat insulation, and the other part is insulated. By using a metal double-walled container, heat loss can be suppressed as much as possible, and heat can be stored efficiently when storing the heat storage material. Or you can cook. Also, by gradually warming the latent heat storage material at a temperature arbitrarily set by the temperature control means, unlike the rapid warming, an increase in the internal pressure of the container due to sublimation or the like can be suppressed. Further, the latent heat storage material can be easily stored at a temperature corresponding to the melting point thereof, for example, at a melting point + about 20 ° C. In addition, since it can automatically store heat as long as power is supplied, it can store heat using economical nighttime power, etc., and can be used without much effort. In addition, by providing means for sensing and notifying or displaying that the heat storage material has stored heat, it is possible to easily determine that the heat storage material has stored heat, and it is necessary to be concerned whether the heat storage material is storing heat. Disappear. In addition, the electric wiring cord supplied to the heating means and the control means can be easily attached to and detached from the portable heat insulating container, or can be easily stored in the heat insulating container or the bottom member. Simply put the object to be heated and unplug the power supply cord.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view illustrating a portable thermos according to the present invention.
FIG. 2 is a cross-sectional view illustrating a portable launcher according to the present invention.
FIG. 3 is a cross-sectional view illustrating a portable insulated cooker according to the present invention.
[Explanation of symbols]
100, 32, 54 ... Insulated container
A, B, C ... thermal storage unit
106, 38, 68 …… Heat storage material
109, 49, 65 ... Heater (heating means)
107, 71 …… Through pipe
12 …… Through hole

Claims

A metal heat-insulated container main body in which a metal bottomed cylindrical inner container and an outer container are joined and integrated by forming a heat insulating layer therebetween, and a latent heat storage material, and the heat storage material The inner container provided with a heat storage unit including a heating unit that senses and controls the temperature, inserts and fixes the heat storage unit into the heat insulating container body, and is provided on a side surface or a bottom surface of the heat insulating container body And through the through-hole or through-tube penetrating the outer container, the heating means and the control means of the heat storage unit are led out of the heat insulating container body, and the heat storage unit is inserted into the inner container bottom of the heat insulating container as a sealed structure, A method for producing a portable heat insulating container, characterized by being fixed .

A latent heat storage material and a heating means that senses and controls the temperature of the heat storage material are hermetically accommodated in a bottomed cylindrical metal container to produce a heat storage unit, and the heat storage unit is formed at the upper end of the metal container of the heat storage unit. A cylinder is joined to form an inner container, the inner container and the outer container are joined and integrated, then a heat insulating layer is formed between the inner container and the outer container to form a heat insulating container body, and the heat insulating container body Portable heat insulation, wherein the wiring of the heating means and the control means of the heat storage unit is led out of the heat insulation container body through a through hole or a through pipe penetrating the inner container and the outer container provided on the side surface or bottom surface Container manufacturing method.