JP4097854B2 - Electric water heater, split heater and water heater - Google Patents

Electric water heater, split heater and water heater Download PDF

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JP4097854B2
JP4097854B2 JP25033699A JP25033699A JP4097854B2 JP 4097854 B2 JP4097854 B2 JP 4097854B2 JP 25033699 A JP25033699 A JP 25033699A JP 25033699 A JP25033699 A JP 25033699A JP 4097854 B2 JP4097854 B2 JP 4097854B2
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partition plate
water
container
heater
liquid
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JP2001070158A (en
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敏弘 慶島
良行 岡部
隆男 神庭
太 弘松
和一 岡田
英明 小林
政廣 横野
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Panasonic Corp
Panasonic Holdings Corp
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Panasonic Corp
Matsushita Electric Industrial Co Ltd
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【０００１】
【発明の属する技術分野】
本発明は、主として一般家庭または事務所等で使用される、収容液体を加熱、保温する電気湯沸し器、電気湯沸し器等の早沸し手段としての分割加熱器、および給湯器に関するものである。
【０００２】
【従来の技術】
従来のこの種の電気湯沸し器は図２５に示すようであった。１は上方を開口し上端部に外方にフランジ２を設けて底部に加熱手段であるヒータ３を備えた容器である。４は中央に円筒状の保持部５を設けて保持部５にパッキン６を介して水密的に容器１を係止する上枠であり、一端にヒンジ７が設けてある。８は上枠４を保持して容器１を収納する本体である。
【０００３】
９は容器１上部を覆う蓋であり、該蓋９の一端に取り付けたピン１０を上枠４のヒンジ７に嵌着して回転する。蓋９には蒸気口１１が設けられ、蓋９の上側から下側へ貫通して貫通穴１２が設けられ、蒸気口１１と貫通穴１２を連通する蒸気通路１３が取り付けられている。蓋９の貫通穴１２下方近傍には蒸気抜き穴１４が複数個設けてある。１５は蓋９の外周に備えられたシールパッキンであり、蓋９の閉塞で前記容器１のフランジ２を気密的にシールする。
【０００４】
１６は容器１底部に一端を連通し、他端を本体８外方に開口した送水管１７に連通した送水装置を構成する遠心ポンプである。
【０００５】
１８は蓋９のピン１０と反対側に備えられて内部から外方へばね１９で付勢して外方から内方にばね１９の付勢にうち勝って摺動するロック部材である。２０はロック部材１８を摺動させる操作つまみである。２１は上枠４のヒンジ７と反対側に設けられた係止部である。ヒンジ７にピン１０が嵌合して蓋９が回転しロック部材１８が係止部２１に係止して蓋９の上枠４への嵌合が完了する。このとき蓋９のシールパッキン１３は容器１上端のフランジ２を気密的にシールする。
【０００６】
２２は外部より電気を給電する接続部である。２３は容器１底部略中央に接触して備えられた温度検知素子である。２４は温度検知素子２３からの信号でヒータ３への通電を制御するとともに操作部２５の回路を制御する制御回路である。
【０００７】
以上のように構成された電気湯沸かし器において、容器１に水を給水する。ピン１０を軸にして蓋９を閉じるとロック部材１８が係止部２１に係止してシールパッキン１５がフランジ２を水密的にシールする。
【０００８】
次に接続部２２から電気を給電する。温度検知素子２３は容器１底部を介して湯温を検知し、制御回路２４が温度検知素子２３からの信号でヒータ３へ通電して湯沸かしする。やがて水温が上昇し、沸騰すると温度検知素子２３がこれを検知して制御回路２４がヒータ３への通電を断電し、以降は温度検知素子２３からの信号で制御回路２４はヒータ３への通電を制御して所定の保温温度を維持する。
【０００９】
湯を所望のときは操作部２５を操作して遠心ポンプ１６を作動させ送水管１７を介して給湯する。
【００１０】
【発明が解決しようとする課題】
上記従来の構成の電気湯沸し器では、容器１内に定格の水量を入れると全体が沸騰するまで湯を使えないので、例えばコップ１杯程度の少量の湯を汲む場合には容器１の定格容量が３Ｌ程度であれば１５〜２０分程度の湯沸かし待ち時間を要し、急いで湯が欲しい場合には使い勝手の悪いものであった。
【００１１】
また、本体１の節電などのため８５°Ｃ程度の温度で保温時に沸騰した湯を使うには３〜５分程度の湯沸かし待ち時間を要した。
【００１２】
したがって、上記従来の問題点を解決し、容器内に定格容量に近い多量の水や保温中の湯が入っていても、湯であれば短時間で高温にして供給できる電気湯沸し器が必要とされた。
【００１３】
また、従来の給湯器も同様な問題があり、液体を急速に昇温し、更に容器全体の液体の温度も従来と同じ時間で昇温できる使い勝手の良い給湯器が必要とされた。
【００１４】
一方、早沸し手段としては電気冷温水機の例があり、実公昭６１−１７０９８１号公報に記載されたものが知られている。その構成は図２６のようになっている。４０１は冷却加熱部４０２とその上部に配置する貯水部４０３から成るタンクで、冷却加熱部４０２の外壁の外周に冷却器４０４および冷却加熱器４０２の底部にはヒータ４０５が取付けてある。４０６はタンク４０１内の冷却加熱部４０２と貯水部４０３を仕切る仕切り板（分割加熱器）で、貯水部４０３から冷却加熱部４０２へ水を導いたり、加熱時、冷却加熱部４０２で発生した気泡を上部へ逃がすため、通水部４０７が設けられている。この通水部４０７の冷却加熱部４０２側に形状記憶合金でできた温度可変部４０８とこの先端に設けられた通水部遮蔽板４０９から成る制御板４１０が取付けられている。
【００１５】
上記構成により、冷水時、温水時により通水部４０７の開口面積を変化させることが可能になり、特に温水時には通水部４０７の開口面積を小さくするように動作させて、冷却加熱部４０２内の水の昇温時間を短くさせることができる。
【００１６】
しかしながら上記従来の技術では、加熱時にいくら開口面積を小さくしても、通水部４０７がある限り常に加熱された水が貯水部４０３に逃げるので加熱効率が落ちるという課題があった。また、通水部４０７を全閉した場合には昇温時間は短くなり、加熱効率は上がるが、冷却加熱部４０２内で発生した気泡は逃げ場がなく、ある程度溜まってくると仕切板（仕切り板）４０６を浮かしてそこから逃げる。そのとき、一気に冷水が冷却加熱部４０２内に入ってくるために温水が冷えてしまうという課題があり、特に冷却加熱部４０２内の水を沸騰させる場合、気泡が大量に発生するのでその傾向は顕著になる。
【００１７】
そこで、本発明の目的は、上記従来の問題点を解決するもので、容器内に定格容量に近い多量の水や保温中の湯が入っていても、湯であれば短時間で高温にして供給できる有用な機能を有する電気湯沸し器、液体を急速に昇温し、容器全体の温度も従来と同じ時間で昇温することもできる使い勝手の良い給湯器、さらに加熱効率を落とさずに発生した気泡を（特に沸騰させた場合でも）うまく逃がすこともできる分割加熱器を提供するものである。
【００１８】
【課題を解決するための手段】
請求項１記載の電気湯沸し器は、液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記出水孔が前記容器の底面の外周付近に設けられ、前記導水管の上端部の略直上が前記仕切り板の前記頂上部とされたものである。
【００１９】
請求項１記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
容器の出水孔を容器底面の外周付近に設け、導水管上端部の略直上を仕切り板の頂上部としたため、遠心ポンプ等の送水装置から湯が吐出され易くすることができる。
【００２０】
請求項２記載の電気湯沸し器は、液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記出水孔が前記容器の底面の外周付近に設けられ、前記導水管の上端部の略直上が前記仕切り板の前記頂上部とされ、前記流水経路が前記出水孔と反対側に設けられたものである。
【００２１】
請求項２記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
また容器の出水孔を容器底面の外周付近に設け、導水管上端部の略直上を仕切り板の頂上部とし、流水経路を出水孔と反対側に設けたため、遠心ポンプ等の送水装置から湯が吐出され易くしつつ、供給する高温の湯量を増すことができる。
【００２２】
請求項３記載の電気湯沸し器は、液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記導水管の上端付近の開口と前記容器の前記出水孔との経路を主水路とし、前記導水管の下端付近に前記出水孔に通じる第２の経路を設けて補水路としたものである。
【００２３】
請求項３記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
また導水管の上端付近の開口と容器の出水孔との経路を主水路とし、導水管下端付近に容器の出水孔に通じる第２の経路を設けて補水路としたため、遠心ポンプ等の送水装置による出湯後、容器内の残湯量を低減し容器内の湯を有効に使用することができる。
【００２４】
請求項４記載の電気湯沸し器は、液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記仕切り板の前記排泡孔に、上昇により開弁し下降により閉弁する弁を設け、前記弁を１平方センチメートル当たり２から５グラムの重量にしたものである。
【００２５】
請求項４記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
仕切り板の排泡孔に、上昇により開弁し下降により閉弁する弁を設け、前記弁を１平方センチメートル当たり２から５グラムの重量にしたため、仕切り板の内側で発生した気泡を効果的に排出し、気泡排出時に仕切り板外の水が仕切り板内に侵入しにくくし、仕切り板内の湯を高温に維持することができる。
【００２６】
請求項５記載の電気湯沸し器は、請求項１、請求項３または請求項４において、流水経路を前記仕切り板の全周にわたり略均等に配したものである。
【００２７】
請求項５記載の電気湯沸し器によれば、請求項１、請求項３または請求項４と同様な効果のほか、仕切り板内部から供給される高温の湯量を増すことができる。
【００２８】
請求項６記載の電気湯沸し器は、請求項１、請求項２、請求項３または請求項４において、仕切り板の内部が空気層となった２重構成とするものである。
【００２９】
請求項６記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果のほか、仕切り板の断熱性を高くして、仕切り板内の水温上昇を早めかつ、供給する湯温を高くすることができる。
【００３０】
請求項７記載の電気湯沸し器は、請求項１、請求項２、請求項３または請求項４において、仕切り板の内部が大気圧より若干低い程度の中空層となった２重構成とするものである。
【００３１】
請求項７記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果のほか、仕切り板の断熱性を高めつつ、中空層の膨張によって仕切り板に生じる応力を低減することができる。
【００３２】
請求項８記載の電気湯沸し器は、請求項１、請求項２、請求項３または請求項４において、仕切り板の中央が真空の中空層となった２重構成とするものである。
【００３３】
請求項８記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果のほか、仕切り板の断熱性を大幅に高めつつ、中空層の膨張によって仕切り板に生じる応力を大幅に低減することができる。
【００３４】
請求項９記載の電気湯沸し器は、請求項１、請求項２、請求項３または請求項４において、仕切り板により覆われた前記容器底面側の容積は、約１０００ｍｌ以下としたものである。
【００３５】
請求項９記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果がある。
【００３６】
請求項１０記載の分割加熱器は、収容液体を加熱するヒータを有する容器と、収容液体をヒータ側と反ヒータ側に分割する仕切り板と、この仕切り板の頂部に取付けた弁と、前記容器に設けられ前記仕切り板により分割された前記ヒータ側の液体を取出す取湯口とを備え、前記仕切り板の前記ヒータ側の液温の高低に応じて弁を開閉制御する温度可変部を設けたものである。
【００３７】
請求項１０記載の分割加熱器によれば、仕切り板のヒータ側の気泡がある一定量溜まるまでは弁は開かず、常に閉じているので加熱効率は落ちず、良好で、また逆に、気泡がある一定量以上溜まったり、沸騰状態のとき、弁が開き気泡を逃がすので仕切り板を浮かすことがなく、一気に温水が冷えない。したがって、加熱効率が良好で安定した早沸しを行うことができる。また仕切り板のヒータ側の液温の高低に応じて弁を開閉制御する温度可変部を設けたため、仕切り板のヒータ側の液温を一定に保ちつつ、仕切り板の反ヒータ側の液体の加熱も行うことができる。
【００３８】
請求項１１記載の分割加熱器は、収容液体を加熱するヒータを有する容器と、収容液体をヒータ側と反ヒータ側に分割する仕切り板と、この仕切り板の頂部に取付けた弁と、前記容器に設けられ前記仕切り板により分割された前記ヒータ側の液体を取出す取湯口とを備え、前記ヒータは前記仕切り板の前記ヒータ側の液体を加熱する内ヒータであり、前記反ヒータ側の液体を加熱する外ヒータを設けたものである。
【００３９】
請求項１１記載の分割加熱器によれば、仕切り板のヒータ側の気泡がある一定量溜まるまでは弁は開かず、常に閉じているので加熱効率は落ちず、良好で、また逆に、気泡がある一定量以上溜まったり、沸騰状態のとき、弁が開き気泡を逃がすので仕切り板を浮かすことがなく、一気に温水が冷えない。したがって、加熱効率が良好で安定した早沸しを行うことができる。また仕切り板のヒータ側の液体を加熱する内ヒータ、反ヒータ側の液体を加熱する外ヒータを設けたため、仕切り板のヒータ側の液温を一定に保ちつつ、仕切り板の反ヒータ側の液体の加熱も行うことができる。
【００４０】
請求項１２記載の分割加熱器は、請求項１０または請求項１１において、仕切り板のヒータ側に活性炭を備えたものである。
【００４１】
請求項１２記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、塩素除去等の浄水性能を向上させることができる。
【００４２】
請求項１３記載の分割加熱器は、請求項１０または請求項１１において、仕切り板を容器に着脱自在に取付けたものである。
【００４３】
請求項１３記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、例えば容器の内側面に凸部を形成し、仕切り板に凸部と係合可能な環状リブを設けたり、仕切り板に磁石を取付けたもので、容器内の水を捨てたりするときに、仕切り板が脱落することを防止することができる。
【００４４】
請求項１４記載の分割加熱器は、請求項１０または請求項１１において、仕切り板の底に流水経路用の隙間を設けたものである。
【００４５】
請求項１４記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、例えば仕切り板の底に突起を設けたもので、容器と一定の隙間を形成することにより、仕切り板への液体の供給を容易に、しかも安定させることができる。
【００４６】
請求項１５記載の分割加熱器は、請求項１０または請求項１１において、仕切り板の反ヒータ側の液温を検知するセンサを仕切り板の反ヒータ側の液体と面する容器の外面に設けたものである。
【００４７】
請求項１５記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、仕切り板の反ヒータ側の液温を確実に検知することができる。
【００４８】
請求項１６記載の分割加熱器は、請求項１０または請求項１１において、仕切り板の反ヒータ側の液温を検知するセンサを備え、仕切り板の反ヒータ側の液体が沸点に到達しないようにしたものである。
【００４９】
請求項１６記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、仕切り板の反ヒータ側の液温が沸点に到達することなく、所定の液温以下にすることができ、出湯量の低下を防止することができる。また、仕切り板の反ヒータ側の液温が沸点に到達しないようにすれば、蓋の蒸気口からの蒸気の噴出をおさえることもできる。
【００５０】
請求項１７記載の分割加熱器は、請求項１６において、仕切り板のヒータ側の液体の取出し中も加熱を継続するものである。
【００５１】
請求項１７記載の分割加熱器によれば、請求項１６と同様な効果のほか、仕切り板の反ヒータ側の液温が沸点に到達することなく、かつ所定の液温以下で仕切り板のヒータ側の液体の取出し中も加熱を継続することにより、出湯後の次の出湯を早く行うことができる。また、容器内全体の湯沸かしも早く行うことができる。
【００７４】
【発明の実施の形態】
（実施の形態１）
本発明の第１の実施の形態について、図１を参照しながら説明する。フランジ２、加熱手段を構成するヒータ３、上枠４、保持部５、パッキン６、ヒンジ７、本体８、蓋９、ピン１０、貫通穴１２、蒸気抜き穴１４、シールパッキン１５、送水装置を構成する遠心ポンプ１６、送水管１７、ロック部材１８、ばね１９、操作つまみ２０、係止部２１、接続部２２、温度検知素子２３、制御回路２４、操作部２５は従来例と同一の形状と機能である。
【００７５】
容器３１の底面中央部には遠心ポンプ１６に通じる出水口３２を設け、容器３１の底面との間に流水経路３３となる隙間を保って、容器３内に下方を径大にして載置した碗状の仕切り板３４を、外周部がヒータ３を囲み込むように容器３１の内径に近接する程度の大きさとして設け、容器３１内は仕切り板３４内部の第１の空間３５と仕切り板３４外部の第２の空間３６とに分離されている。仕切り板３４の材質はステンレスとしているがこれに限るものでなく、ガラスや磁器や耐熱水性樹脂など耐熱性がある材料であればよく、熱伝導率が小さい方が好ましい。仕切り板３４の頂上部には流水経路３３に比べ１０分の１程度と十分に総面積を小さくした排泡孔３７を設け、出水孔３２からは上向きに延長され上端付近が開口３８となった導水管３９を備ている。
【００７６】
上記構成における作用を説明する。容器３１に水を入れ接続部２２を電源に接続しヒータ３に通電すると容器３１の内部の水が加熱されるが、容器３１の内部は仕切り板３４によってヒータ３側の第１の空間３５と蓋９側の第２の空間３６とに分離されているので、ヒータ３側の第１の空間３５内の水は急速に加熱され温度が上昇する。仕切り板３４の頂上部には排泡口３７が設けられているが、排泡孔３７からの漏れ量は微量で、ヒータ３からの受熱量の一部が第２の空間３６内に漏れる程度である。このため第１の空間３５内はヒータ３の電気容量が１２００Ｗ程度で第１の空間３５の容積が７００ｍＬ程度であれば、実験によれば５〜６分程度で沸騰する。温度検知素子２３で容器３１の温度を検出し制御回路２４で沸騰到達を検知することができる。沸騰後遠心ポンプ１６を動作させると、第１の空間３５内の湯は導水管３９上部の開口３８から取り出され、給湯した量だけ仕切り板３４下端側の流水経路３３を通り第２の空間３６内の低温の水が第１の空間３５内に供給され、第１の空間３５内の高温の湯とは温度差による比重差からすぐには混ざり合わない。そして、第２の空間３６内から導かれた水は容器３１の底側から徐々に盛り上がり、仕切り板３４の壁面に近づいていく。導水管３９の開口３８は仕切り板３４の頂上近くに位置するので、仕切り板３４内の容積の相当量が高温を保ち給湯される。具体的には仕切り板３４内容積が７００ｍＬ程度であれば、５００ｍＬ程度を８５°Ｃ程度の高温で得ることができる。
【００７７】
このように、容器３１内に定格容量に近い多量の水が入っていても、少量の湯であれば容器３１内の水すべてが沸騰するのを待たずに、短時間で高温にして供給できる。容器３１内が８５°Ｃ程度に保温中に沸騰した少量の高温の湯を得る場合も同様で、このときは１分程度で高温の湯を得られ、仕切り板内部の湯のみが再加熱されるので、消費電力を低減する効果もある。
【００７８】
（実施の形態２）
本発明の第２の実施の形態について、図２に基づいて説明する。フランジ２、加熱手段を構成するヒータ３、上枠４、保持部５、パッキン６、ヒンジ７、本体８、蓋９、ピン１０、貫通穴１２、蒸気抜き穴１４、シールパッキン１５、送水装置を構成する遠心ポンプ１６、送水管１７、ロック部材１８、ばね１９、操作つまみ２０、係止部２１、接続部２２、温度検知素子２３、制御回路２４、操作部２５は従来例と同一の形状と機能である。また、容器３１、出水口３２、開口３８、導水管３９、仕切り板４１、排泡孔４２、摺動弁４３、仕切り板４１内部の第１の空間４４、仕切り板４１外部の第２の空間４５は第１の実施の形態と同様のものである。
【００７９】
異なるのは、流水経路５１を形成する容器３１と仕切り板４１の隙間Ａを、仕切り板４１の全周にわたりほぼ均等に設けた点である。また、排泡孔４２を上側から塞ぎ、摺動部が排泡孔４２に貫通し、下端に係止部を備えた摺動弁４３を備えている。
【００８０】
上記構成における作用を説明する。仕切り板４１内部の水が沸騰後、遠心ポンプ１６を動作させると、第１の空間４４内の湯は導水管３９上部の開口３８から取り出され、本体外部に給湯される。給湯した量だけ仕切り板４１の下端側の流水経路５１を通り第２の空間４５内の低温の水が第１の空間４４内に供給されるが、第１の空間４４内の高温の湯とは温度差による比重差からすぐには混ざり合わない。そして、第２の空間４５内に導かれた低温の水は容器３１の底側から徐々に盛り上がり、仕切り板４１の上部壁面に近づいていく。このときに、流水経路５１を形成する隙間Ａが仕切り板４１の全周にわたり均一であるので、第１の空間４４内には仕切り板４１の全周から均等に水が導かれ、低温の水の層は容器３１の底から全周が均一な早さで盛り上がり、ほぼ水平に導水管３９の開口３８に近づく。このため、仕切り板４１内部の第１の空間４４から、開口３８に低温の水層が達するまでに効率よく高温の湯を取り出すことができるので、仕切り板内部から供給される高温の湯量を増すことができる。また、仕切り板４１の頂上部には排泡口３７が設けられているが、常時は摺動弁４３で塞がれ、仕切り板４１内の第１の空間４４の水が高温になって発生する気泡が摺動弁４３の下に溜り、気泡の浮勢力で摺動弁４３が上方に動作し、気泡が抜けると摺動弁４３は自重で閉じる。こうして排泡孔４２は通常閉じていることが多く、第１の空間４４内から第２の空間４５内へ逃げる熱量が低減され、仕切り板内部から供給される湯温を高めることができる。
【００８１】
（実施の形態３）
本発明の第３の実施の形態について、図３に基づいて説明する。フランジ２、加熱手段を構成するヒータ３、上枠４、保持部５、パッキン６、ヒンジ７、本体８、蓋９、ピン１０、貫通穴１２、蒸気抜き穴１４、シールパッキン１５、送水装置を構成する遠心ポンプ１６、送水管１７、ロック部材１８、ばね１９、操作つまみ２０、係止部２１、接続部２２、温度検知素子２３、制御回路２４、操作部２５は従来例と同一の形状と機能である。
【００８２】
異なるのは、容器６１の出水孔６２を容器６１底面の外周付近に設け、上端部を開口６３とした導水管６４の略直上を仕切り板６５の頂上部として排泡孔６６を配したもので、排泡孔６６には仕切り板６５内の第１の空間６７の水が沸点近くになると発生する気泡の浮勢力で開き、気泡が仕切り板６５外の第２の空間に抜けると閉じる摺動弁６９を設けた点である。７０は流水経路である。
【００８３】
このように構成すると、出水口６２の直下付近は制御回路２４を避け、送水管１７にも近く、遠心ポンプ１６の配置には適切な位置であり、加えて、出水口６２と遠心ポンプ１６との送水経路を最短にできるので、出水口６２と遠心ポンプ１６との間に圧力低下が生じにくく、第１の空間６７内の湯温が１００°Ｃに近い９８〜９９°Ｃ程度の高温であっても、圧力低下で沸点が下がって生じるキャビテーションが生じにくいものである。このため、遠心ポンプ１６の性能低下を防ぎ、湯を吐出され易くするものである。
【００８４】
（実施の形態４）
本発明の第４の実施の形態について、図４に基づいて説明する。フランジ２、加熱手段を構成するヒータ３、上枠４、保持部５、パッキン６、ヒンジ７、本体８、蓋９、ピン１０、貫通穴１２、蒸気抜き穴１４、シールパッキン１５、送水装置を構成する遠心ポンプ１６、送水管１７、ロック部材１８、ばね１９、操作つまみ２０、係止部２１、接続部２２、温度検知素子２３、制御回路２４、操作部２５は従来例と同一の形状と機能である。また、容器６１の出水孔６２を容器６１底面の外周付近に設け、開口６３を有する導水管６４を設けた点は第３の実施の形態と同様である。
【００８５】
異なるのは、導水管６４上端部の略直上を頂上部として排泡孔７１を配した仕切り板７２の下端と容器底面との間の流水経路７３であるすきまを、出水孔６２の反対側に設けたものである。
【００８６】
このように構成すると、出湯孔６２と遠心ポンプ１６の経路が短いので遠心ポンプでの圧力低下が小さくなり、湯を吐出し易くできる。さらに、仕切り板７２内の第１の空間７４において導水管６４の開口６３が前上部に偏った位置にあるので、導水管６４直下の出水孔６２と反対側に流水経路７３を設けると、第１の空間７４内の湯が導水管６４側に押し出されやすくなり、第１の空間７４内の湯を有効に引き出し、供給する高温の湯量を増すことができる。
【００８７】
（実施の形態５）
本発明の第５の実施の形態について、図５に基づいて説明する。フランジ２、加熱手段を構成するヒータ３、上枠４、保持部５、パッキン６、ヒンジ７、本体８、蓋９、ピン１０、貫通穴１２、蒸気抜き穴１４、シールパッキン１５、送水装置を構成する遠心ポンプ１６、送水管１７、ロック部材１８、ばね１９、操作つまみ２０、係止部２１、接続部２２、温度検知素子２３、制御回路２４、操作部２５は従来例と同一の形状と機能である。
【００８８】
異なるのは、容器８１の中央部の出水口８２と、容器８１の底面との間に流水経路８３となる隙間を保ち、外周部がヒータ３を囲み込むように容器８１の内径に近接する程度の大きさとして設けた碗状の仕切り板８４と、仕切り板８４内部の第１の空間８５と仕切り板８４外部の第２の空間８６と、仕切り板８４頂上部の排泡孔８７と、常時は排泡孔８７を閉じる摺動弁８８と、出水孔８２から上向きに延長され上端付近が開口８９となった導水管９０を備て、導水管９０下端部に出水孔８２に通じる補助孔９１を設けた点である。
【００８９】
このように構成すると、導水管９０の上端の開口８９から容器８１の出水孔８２に至る主水路に加え、導水管９０下端付近の補助孔９１から出水孔８２に通じる第２の経路が補水路として構成される。容器８１内の定格容量に近い湯を取り出す際、補助孔９１がない場合は容器８１内の湯は水面が導水管９０上端の開口８９下端Ｈ１より低くなると取り出せないが、補助孔９１を導水管９０下端部に設けることで、水面が補助孔９１下端のＨ２になるまで湯を取り出すことができ、遠心ポンプ１６で出湯後の容器８１内の残湯量を低減することができる。
【００９０】
（実施の形態６）
本発明の第６の実施の形態について、図６に基づいて説明する。第６の実施の形態は、第５の実施の形態の仕切り板８４に代えて、仕切り板１０１をステンレス製の内板１０２と外板１０３から成り、内板１０２と外板１０３をそれぞれ両端部で全周を溶接密閉し、仕切り板１０１の中央が空気層１０４となった２重構成としたものである。空気層１０４が断熱層になるので仕切り板１０１の断熱性が高まり、仕切り板１０１を介して外部へ逃げる熱量が減少して仕切り板１０１内部の水温上昇が早くなり、仕切り板１０１内を湯沸かし後は断熱効果により湯温が低下しにくいので、供給する湯温が高くなる。ひいては消費電力量を低減できる。なお、内板１０２と外板１０３の接合を溶接としたがこれに限るものでなく、ろう付けなどほかの方法でも良い。
【００９１】
（実施の形態７）
本発明の第７の実施の形態について、図７に基づいて説明する。第７の実施の形態は、第５の実施の形態の仕切り板８４に代えて、仕切り板１１１をステンレス製の内板１１２と外板１１３から成り、内板１１２と外板１１３をそれぞれ両端部で溶融密閉し、仕切り板１１１の中央が中空層１１４となった２重構成としたものである。中空層１１４は１０から３０°Ｃの常温で０．７５から０．９５気圧とし大気圧より若干低い程度としている。この結果、中空層１１４が常温で大気圧のものが１００°Ｃでは１．３気圧程度に上昇して内圧が生じ、仕切り板１１１にストレスが生じて仕切り板１１１が変形したり、溶接部に応力が生じるなどの不具合があるが、常温での仕切り板１１１内圧を０．７５から０．９５気圧とすれば、湯沸かし沸騰で中空層の圧力が上昇を１気圧を挟んで上下することになり、仕切り板１１１の断熱性を中空層１１４があることで高めつつ、中空層１１４の膨張によって仕切り板に生じる応力を低減することをができる。
【００９２】
（実施の形態８）
本発明の第８の実施の形態について、図８に基づいて説明する。第８の実施の形態は、第５の実施の形態の仕切り板８４に代えて、仕切り板１２１をステンレス製の内板１２２と外板１２３から成り、内板１２２と外板１２３をそれぞれ両端部で溶融密閉し、仕切り板１２１の内部が中空層１２４となった２重構成としたものである。中空層１２４は１万分の１ｔｏｒｒ以下の真空としている。この程度の真空度は真空魔法瓶と同程度であり、これにより仕切り板１２１の断熱性を大幅に高めて電気湯沸し器本体の消費電力量を低減すると同時に、中空層１２４は空気が低密度なので空気の熱膨張がほとんど無く、膨張による内圧で仕切り板１２１に生じる応力を大幅に低減することをができ、仕切り板１２１の耐久性を高めることができる。
【００９３】
（実施の形態９）
本発明の第９の実施の形態について、図９に基づいて説明する。第９の実施の形態は、例えば第６の実施の形態から第８の実施の形態において、仕切り板１３１の排泡孔１３２を上側から塞ぎ、摺動部が排泡孔１３２に貫通し、下端に係止部を備えた摺動弁１３３を備えている。摺動弁１３３は常時は閉じており、排泡孔１３２の開口面積に対する摺動弁１３３の重量である動作力を１平方センチメートル当たり２から５グラムにしている。こうすると仕切り板１３１内部の水が沸騰した場合の比重低下で生じる押し上げ力では動作せず、水が沸騰した時発生する気泡が摺動弁１３３の動作力に勝つまで排出されないので、常時摺動弁１３３が開くことなく、排泡孔１３２から仕切り板１３１外部への熱水漏れを低減する。また、摺動弁１３３の動作力を大きくすると、仕切り板１３１内に多量の気泡が溜まると摺動弁１３３は動作するが、仕切り板１３１内の容積を占めていた気泡が一気に外に出ると、仕切り板１３１内に外部の水が供給され、仕切り板１３１内の湯温が低下する。これに対し、１平方センチメートル当たり５グラムの場合であれば、仕切り板１３１内の気泡排出時の湯温低下を５゜Ｃ程度で実用に差し支えない程度である。こうして、仕切り板１３１の内側で発生した気泡を効果的に排出し、気泡排出時に仕切り板外の水が仕切り板内に侵入しにくくし、仕切り板内の湯を高温に維持することができる。
【００９４】
（実施の形態１０）
本発明の第１０の実施の形態を図１０により説明する。図１０において、２１１は容器で、その底部にヒータ２１２を内蔵している。２１３は容器２１１内を仕切る椀形の仕切り板で、容器２１１の底部に、かつ、ヒータ２１２を覆うように備えられている。２１４は弁で、仕切り板２１３の最高位置に取付けられている。仕切り板２１３のヒータ側には取湯口（出水孔）２１５があり、容器２１１に設けられている。２１６は導水管、２１７はポンプ、２１８は吐出口で、導水経路を構成している。２１９はサーミスタ等のセンサで、仕切り板２１３のヒータ側の水温を検知している。２２０は容器２１１等の内蔵部品を収容する外装体である。２２１は蓋で、外装体２２０に回動自在に取付けられており、蓋２２１には蒸気口２２２が形成されている。当然のことながら、導水経路等については水密が保持されている。仕切り板２１３のヒータ側で湯ができて、出湯可能になり、実際にポンプ２１７を駆動して出湯するときは、基本的には出湯中ヒータ２１２は通電しないようにする。これはヒータ通電のため発生する気泡を巻込むことによる流量低下を防止するためである。当然、出湯後は仕切り板２１３のヒータ側に冷水が入ってくるので、再び湯ができるまで待つ必要がある。
【００９５】
ところで、仕切り板２１３と弁２１４は比重１以上が必要条件であり、仕切り板２１３は給水時や仕切り板２１３のヒータ側、反ヒータ側の水の沸騰時等、浮上がらない十分な負の浮力をもつように比重と体積（肉厚）で調整しなければならない。弁２１４は軽過ぎると仕切り板２１３のヒータ側の温水が逃げ易くなり、加熱効率が低下する。逆に重過ぎると、弁２１４が開いたときの仕切り板２１３のヒータ側の温度低下が大きくなったり、仕切り板２１３のヒータ側に気泡が溜まり過ぎて仕切り板２１３が浮易くなる。したがって、弁２１４は気泡がある一定量溜まるまでは開かず、逆に、気泡がある一定量以上溜まったり、沸騰状態のとき、開いて気泡を逃がすような適度な負の浮力をもつように調整しなければならない。
【００９６】
上記構成により、仕切り板２１３のヒータ側の気泡がある一定量溜まるまでは弁２１４は開かず、常に閉じているので加熱効率は落ちず、良好で、また逆に、気泡がある一定量以上溜まったり、沸騰状態のとき、弁２１４が開き気泡を逃がすので仕切り板２１３を浮かすことがなく、一気に温水が冷えない。したがって、加熱効率が良好で安定した早沸しを行うことができる。
【００９７】
なお、図１０の構成において、取湯口２１５の位置については容器２１１の底部中央に、高さについてはできるだけ高い方が効率よく高い温度の湯を取込むことができ、仕切り板２１３のヒータ側の実加熱容積以下のある一定量出湯したときの温度低下を抑制することができる。また、高さについては高い方が硬水の場合に発生する水垢のポンプへの吸込みも起こりにくい。
【００９８】
さらに弁２１４について付け加えるなら、負の浮力やストローク、開口面積（π／４）Ｄ2 を図１１に示すように適度に調整することにより、仕切り板２１３のヒータ側の飽和温度は約１００度だけでなく、ある一定温度にすることもできる。
【００９９】
（実施の形態１１）
本発明の第１１の実施の形態を図１２（ａ）、（ｂ）、（ｃ）により説明する。図１２（ａ）、（ｂ）において、２２３は活性炭で、２２４は活性炭２２３を収容するケースで、フレーム２２５とメッシュ２２６で構成されており、爪２２７が設けられている。仕切り板２１３には取付け穴２２８を設け、ケース２２４の爪２２７とかん合自在になっている。この場合、ヒータ２１２との間に気泡が溜まり、空気層ができて空焼きにならないように十分隙間を設け、気泡が溜まりにくい構成にする必要がある。
【０１００】
上記構成により、活性炭２２３による触媒作用により、塩素除去等の浄水性能を向上させることができる。
【０１０１】
なお、図１２（ｃ）のような構成にしてもよく、この場合、２２９は活性炭で、２３０は活性炭２２９を収容するケースで、ベース２３１とメッシュ２３２で構成されており、ケース２３０を取湯口２１５に取付ければよい。
【０１０２】
その他は第１０の実施の形態と同様である。
【０１０３】
（実施の形態１２）
次に本発明の第１２の実施の形態を図１３（ａ）、（ｂ）により説明する。図１３（ａ）、（ｂ）において、２３３は凸部で容器２１１の内側面に形成されている。仕切り板２１３には凸部２３３と係合可能な環状リブ２３４が設けてあり、一箇所凹部２３５が形成されている。仕切り板２１３のセットは次のように行う。凹部２３５と凸部２３３の位置を揃えて仕切り板２１３を容器２１１の底部に置き、仕切り板２１３を回転させる。
【０１０４】
上記構成により、蓋２２１を開けて、容器２１１内の水を捨てたりするときに、仕切り板２１３が脱落することを防止することができる。
【０１０５】
なお、容器２１１に凸部２３３を形成しなくても、凸部２３３に替わる配管等の突出部があればそれを利用してもよい。
【０１０６】
その他は第１０の実施の形態と同様である。
【０１０７】
（実施の形態１３）
本発明の第１３の実施の形態を図１４により説明する。図１４において、２３６は磁石で、仕切り板２１３に取付けられており、仕切り板２１３を容器２１１にセットしたとき、容器２１１と磁力で結合する。この場合、当然容器２１１は磁性を有しており、たとえば、フェライト系ステンレス鋼等でなければならない。
【０１０８】
上記構成により、蓋２２１を開けて、容器２１１内の水を捨てたりするときに、仕切り板２１３が脱落することを防止することができる。また、容器２１１と磁力で結合しているので、仕切り板２１３の比重を必ずしも１以上にする必要はなく、さらに浮上がらない十分な負の浮力にする必要もなくなるので、体積（肉厚）を小さくすることができ、軽量化できる。場合によっては、コストダウンも可能になる。
【０１０９】
その他は第１０の実施の形態と同様である。
【０１１０】
（実施の形態１４）
次に本発明の第１４の実施の形態を説明する。本発明は仕切り板２１３を樹脂製としたものである。この場合、耐熱水性の優れた樹脂である必要があり、たとえば、フィラー／ガラス強化したポリフェニレンサルファイド、ポリサルフォン、ポリエーテルスルフォン、シンジオタクチックポリスチレン等が挙げられる。また、比重という観点からは比重の比較的大きいポリフェニレンサルファイドが有利である。さらに、樹脂製であるため、断熱性は非常によい。
【０１１１】
上記のように、仕切り板２１３を断熱性の高い樹脂としたことで、仕切り板２１３の反ヒータ側への放熱が少なく、加熱効率を高めることができる。また、樹脂製であるために、自由度の高い形状に成形することができ、比較的安価である。
【０１１２】
その他は、第１０の実施の形態と同様である。
【０１１３】
（実施の形態１５）
本発明の第１５の実施の形態を説明する。本発明は仕切り板２１３を金属製としたものである。この場合、耐食性の優れた金属である必要があり、たとえば、ステンレス鋼、チタン合金等が挙げられるが、断熱性、コストという観点を含め、総合的にはＳＵＳ３０４系のステンレス鋼が有利である。
【０１１４】
上記のように、仕切り板２１３を強靱な金属としたことで、落下時等の欠け、割れがなく、頑丈である。また、汚れも取れ易く衛生的である。プレス成形にすれば、比較的安価である。
【０１１５】
その他は、第１０の実施の形態と同様である。
【０１１６】
（実施の形態１６）
本発明の第１６の実施の形態を説明する。本発明は仕切り板２１３をセラミック（陶磁器、硝子）製としたものである。この場合、断熱性については概ね樹脂と金属の中間にある。
【０１１７】
上記のように、仕切り板２１３をセラミック（陶磁器、硝子）製としたことで、化学的に安定で、腐食の恐れはほとんどない。
【０１１８】
その他は、第１０の実施の形態と同様である。
【０１１９】
（実施の形態１７）
本発明の第１７の実施の形態を図１５により説明する。図１５において、２３７は仕切り板の二重構造部で、水を浸入させて断熱層を形成している。二重構造部２３７にはわずかに水が循環でき、完全に水が澱んでしまうのを防止する穴２３８が数箇所設けてある。
【０１２０】
上記構成により、よい断熱性が得られ、加熱効率を向上させることができる。
【０１２１】
その他は、第１０の実施の形態と同様である。
【０１２２】
（実施の形態１８）
本発明の第１８の実施の形態を図１６により説明する。図１６において、２３９は突起で、仕切り板２１３の底に数箇所設け、容器２１１と一定の隙間を形成している。
【０１２３】
上記構成により、仕切り板２１３への水の供給を容易に、しかも安定させることができる。特に、仕切り板２１３のヒータ側の水を加熱中、気泡が溜まると弁２１４が開き、仕切り板２１３の底から水が供給されるが、そのとき仕切り板２１３のヒータ側の水温変化を低減するのに効果があり、その結果、センサ２１９のセンシングに好都合である。これは、隙間がなければ冷水が急激に仕切り板２１３のヒータ側に供給され、水温変化が大きくなり易いが、一定の隙間があるために冷水が比較的遅い流速で仕切り板２１３のヒータ側に供給され、水温変化が小さくなることによる。なお、図３の場合、センシングという観点からは、冷たい水流が温度検知素子２３の上を直接かすめることがないように配慮する方が温度検知素子２３の温度変化が急激にならず、センシングに好都合である。端的には摺動弁６９または導水管６４と温度検知素子２３と流水経路７０（隙間）は同一線上にない方がよい。また、より高温の湯を一定量出湯したい場合、導水管６４の近傍には流水経路７０（隙間）を形成しない方がよい。そうすることにより、仕切り板６５の反ヒータ側の冷たい水を引込みにくくなる。
【０１２４】
その他は、第１０の実施の形態と同様である。
【０１２５】
（実施の形態１９）
本発明の第１９の実施の形態を図１７により説明する。図１７において、２４０は突起で、仕切り板２１３の外周に数箇所設けてある。
【０１２６】
上記構成により、仕切り板２１３と容器２１１とのガタを防止し、ヒータ２１２と仕切り板２１３のヒータ側の形状の関係を一定に保ち、対流の変化を最小限に抑え、安定した早沸しを行うことができる。
【０１２７】
その他は、第１０の実施の形態と同様である。
【０１２８】
（実施の形態２０）
本発明の第２０の実施の形態を図１８（ａ）、（ｂ）により説明する。図１８（ａ）において、２４１は仕切り板２１３の反ヒータ側の水温を検知するためのサーミスタ等のセンサで、容器２１１の外側面に設けてある。この場合、十分に仕切り板２１３の反ヒータ側の水温を反映できるように、仕切り板２１３の外周とセンサ２４１直内の容器２１１の間には一定の距離をあける必要がある。
【０１２９】
上記構成により、仕切り板２１３の反ヒータ側の水温を確実に検知することができる。
【０１３０】
なお、図１８（ｂ）のように、センサ２４１の取付けは容器２１１の外側面でなく、外底面でもよい。この場合、仕切り板２１３による分割加熱は容器２１１の外底面を外して行うようにする必要がある。この場合、十分に仕切り板２１３の反ヒータ側の水温を反映できるように、また、仕切り板２１３の底部隙間から漏れた湯の影響を受けないように、仕切り板２１３の外周とセンサ２４１直内の容器２１１の間には一定の距離をあける必要がある。なお、実施の形態１８のように隙間を設ける場合は、（ａ）、（ｂ）どちらの実施例であっても、センサ２４１の近傍には隙間を形成せず、隙間から漏れる湯の温度の影響を受けないようにするのが原則で、そうすることにより、センサ２４１の温度変化が急激にならず、センシングに好都合である。
【０１３１】
その他は、第１０の実施の形態と同様である。
【０１３２】
（実施の形態２１）
本発明の第２１の実施の形態を説明する。基本的な構成は第２０の実施の形態と同様であり、仕切り板２１３の反ヒータ側の水温が沸点に到達することなく、かつ、所定の水温以下になるようにしたものである。
【０１３３】
ここで、仕切り板２１３の反ヒータ側の水温と製品性能の関係について説明する。図１９は仕切り板２１３の反ヒータ側の水温と毎秒当たりの出湯量の関係を表したものである。出湯直前の仕切り板２１３のヒータ側の水温は常に約１００℃である。使用したポンプはローリング式ダイヤフラムポンプである。図１９のように、仕切り板２１３の反ヒータ側の水温がＴ１になると出湯量が低下し始める屈曲点が現れる。出湯量の低下の原因は次のように考えられる。出湯し始めるとヒータ２１２は非通電になるが、仕切り板２１３の反ヒータ側の水温が低いときはヒータ２１２の余熱による気泡の発生が直ぐになくなり、気泡の巻込みによる流量低下の影響は少ない。また、反ヒータ側の水温が低いと、ポンプにより引き込む湯温が早期に低下し、キャビテーションの発生しない臨界温度に達するため、キャビテーションによる流量低下の影響も少ない。しかし、仕切り板２１３の反ヒータ側の水温が高くなると、ヒータ２１２の余熱による気泡が出湯中も発生し続け、気泡の巻込みによる流量低下やキャビテーションによる流量低下が起こる。実験的にはＴ１は８５〜９５℃である。
【０１３４】
上記のように、仕切り板２１３の反ヒータ側の水温が沸点に到達することなく、かつ、所定の水温以下になるようにしたことで、出湯量の低下を防止することができる。これを解決する方法として、仕切り板２１３の反ヒータ側の水温がＴ１かＴ１よりある程度低い水温になったときに、余熱の少ない加熱の方法、すなわち、消費電力の小さいヒータに切替えるとか、ヒータをＯＮ−ＯＦＦさせるなどの方法がある。
【０１３５】
ところで、仕切り板２１３の反ヒータ側の水を沸騰させた場合の現象について説明する。仕切り板２１３なしで通常に沸騰させた場合に比較して、仕切り板２１３ありで沸騰させると、通常沸騰時に発生する気泡のエネルギーだけでなく、仕切り板２１３のヒータ側で発生した気泡が弁２１４を開けて連続的に出ることによるエネルギーが加わり、湯の動きが非常に大きくなる。
【０１３６】
しかし、仕切り板２１３の反ヒータ側の水が沸点に到達しないようにすれば、上記のような現象が生じず容器２１１内の湯上面を安定させることもできる。
【０１３７】
（実施の形態２２）
次に本発明の第２２の実施の形態を説明する。基本的な構成は第２０の実施の形態と同様であり、仕切り板２１３の反ヒータ側の水が沸点に到達することなく、かつ、所定の水温以下で仕切り板２１３のヒータ側の湯の取出し中も加熱を継続するようにしたものである。
【０１３８】
第２１の実施の形態では仕切り板２１３の反ヒータ側の水温が低いときは気泡の巻込みやキャビテーションによる流量低下の影響は少ないと説明したが、本発明は仕切り板２１３の反ヒータ側の水温が低く、気泡の巻込みやキャビテーションが起こりにくいときは出湯中も加熱を積極的に行い、出湯後もできるだけ早く次の出湯ができるようにすることが目的である。ここで、仕切り板２１３の反ヒータ側の水温と製品性能の関係について説明する。図２０は仕切り板２１３の反ヒータ側の水温と毎秒当たりの出湯量の関係を表したものである。第２１の実施の形態と同じく出湯直前の仕切り板２１３のヒータ側の水温は常に約１００℃であり、使用したポンプはローリング式ダイヤフラムポンプである。図２０のように、仕切り板２１３の反ヒータ側の水温がＴ２になると出湯量が低下し始める屈曲点が現れる。したがって、仕切り板２１３の反ヒータ側の水温がＴ２になるまで、出湯中も加熱を継続することができる。当然、出湯中加熱なしの屈曲点Ｔ１に比較し、Ｔ２は低い温度となる。実験的にはＴ２は５０〜６０℃である。
【０１３９】
上記のように、仕切り板２１３の反ヒータ側の水温が沸点に到達することなく、かつ、所定の水温以下で仕切り板２１３のヒータ側の湯の取出し中も加熱を継続するようにしたことで、出湯後の次の出湯を早く行うことができる。また、容器２１１内全体の湯沸かしも早く行うことができる。
【０１４０】
（実施の形態２３）
本発明の第２３の実施の形態を図２１により説明する。図２１において、２４２は弁、２４３は支持部Ａ、２４４はバイアスばねで、バイアスばね２４４は支持部Ａ２４３の上方に取付けられ、弁２４２を上方に付勢しており、支持部Ａ２４３は仕切り板２１３に固定されている。２４５は支持部Ｂで、弁と一体となった軸２４６に取付けられている。２４７は形状記憶合金でできた温度可変部で、支持部Ａ２４３、支持部Ｂ２４５の間に取付けられている。上記構成により、温度可変部２４７がある一定水温を越えると、バイアスばね２４４が弁２４２を付勢する力より、温度可変部２４７が弁２４２を下方に下げようとする力の方が勝るようになり、弁２４２は開く。逆に、温度可変部２４７がある一定水温以下になると、弁２４２は閉じる。
【０１４１】
ところで、今までの実施の形態では仕切り板２１３のヒータ側の水は沸騰させることを前提としたが、使用状況によっては、沸騰した水では温度が高過ぎるという場合がある。たとえば、コーヒー等を抽出する場合などがそうであり、また、できるだけ一定水温にすることが望ましい。したがって、仕切り板２１３のヒータ側の水を沸騰させず、一定の水温で止めるようにヒータ２１２のＯＮ−ＯＦＦ制御をする必要が生じる。たとえば、一定の水温を９０℃とした場合、９０℃を越えるとヒータ２１２の通電が止まるものとする。しかし、仕切り板２１３の断熱性が高ければ、仕切り板２１３のヒータ側の水温はヒータ２１２が再び通電する水温まで容易に下がらず、ヒータ２１２の通電間隔が極端に伸び、仕切り板２１３の反ヒータ側の水の加熱がほとんど行われなくなるという課題が発生する。
【０１４２】
ここで、本構成による弁２４２の動作について説明する。たとえば、一定の水温を９０℃とした場合、９０℃を越えるとヒータ２１２の通電は止まる。一方、弁２４２をたとえば９０℃で開くように設定しておけば、仕切り板２１３のヒータ側の水温が下がり、ヒータ２１２は再通電され、弁２４２は閉じる。
【０１４３】
上記構成により、ヒータ２１２のＯＮ−ＯＦＦ制御と弁２４２の開閉の繰返しで、仕切り板２１３のヒータ側の水温を一定に保ちつつ、仕切り板２１３の反ヒータ側の水の加熱も行うことができる。
【０１４４】
その他は、第１０の実施の形態と同様である。
【０１４５】
（実施の形態２４）
次に本発明の第２４の実施の形態を図２２により説明する。図２２において、２４８は内ヒータで、容器２１１の底部に内蔵されている。２４９は外ヒータで、容器２１１の外側面に設けられている。２５０は内センサ、２５１は外センサでそれぞれ仕切り板２１３のヒータ側、反ヒータ側の水温を検知している。
【０１４６】
本構成の目的は第２３の実施の形態と同じく、仕切り板２１３のヒータ側の水温を一定にしつつ、仕切り板２１３の反ヒータ側の水を加熱することである。ここで、本構成の動作について説明する。まず、仕切り板２１３のヒータ側の水を内ヒータ２４８で加熱する。仕切り板２１３のヒータ側の水が所定の水温になったのを内センサ２５０が検知し、内ヒータ２４８の通電を止める。次に、外ヒータ２４９への通電を開始し、仕切り板２１３の反ヒータ側の水を加熱する。もし、その途中で出湯があり、仕切り板２１３のヒータ側の水が冷えたなら、再び、内ヒータ２４８への通電を開始し、同時に外ヒータ２４９への通電を止める。このような動作を容器２１１内全体の水が一定温度になるまで繰返す。
【０１４７】
上記構成により、仕切り板２１３のヒータ側の水温を一定に保ちつつ、仕切り板２１３の反ヒータ側の水の加熱も行うことができる。
【０１４８】
なお、消費電力が高くなるが、内ヒータ２４８、外ヒータ２４９を同時に通電しても構わない。
【０１４９】
その他は、第１０の実施の形態と同様である。
【０１５０】
（実施の形態２５）
本発明の第２５の実施の形態について図２３および図２４により説明する。図２３において、３０１は水等の液体３０２を入れる容器で、容器３０１の底面にはヒータ３０３が取り付けられている。容器３０１の底部には水より比重の重い材質、例えばＰＰＳ樹脂等で作られた略密閉空間を形成する仕切り板３０４が設置されている。仕切り板３０４上部には沸騰により発生する気泡を上方へ排出する為の逆止弁３０５が設けられている。この逆止弁３０５も仕切り板３０４と同様に水より比重の重いＰＰＳ樹脂等で作られている。仕切り板３０４の底面と容器３０１底面の接触部には０．１〜２ｍｍ位の隙間３０６を設けて仕切り板３０４内の水が沸騰により逆止弁３０５より抜けた時、水３０２が仕切り板３０４内に循環するようにしている。この隙間３０６は仕切り板３０４の底面に数ヶ所の凸部を設けて形成している。３０７は仕切り板３０４内の水温を検出するサーミスタＡで、３０８は仕切り板３０４外の水温を検出するサーミスタＢである。３１０は湯を吐出する液体ポンプで、仕切り板３０４の内部空間に連通し、容器３０１の底部より上方に突き出た吸水パイプ３１１に接続され、出水パイプ３１２より外部に湯を吐出する。３１３は吸水パイプ３１１を容器３０１の底面と共に覆うステンレス製メッシュのフィルタである。３１４は容器３０１を収納する本体で、上部には容器３０１に水を入れる際に開閉する蓋３１５を設け、蓋３１５には蒸気を外部へ排出する蒸気口３１６が開いている。
【０１５１】
この第２５の実施の形態の場合、容器３０１底部の水は仕切り板３０４により略密閉されているため、ヒータ３０３の熱を集中して受け、急速に昇温することができる。第２５の実施の形態では約２５０ｍｌの水を沸騰させるのに必要な時間は約２分であった。この時、サーミスタＡ３０７で仕切り板３０４内の水温を検知し、本体の表示部（図示せず）により湯沸かし完了を表示し、液体ポンプ３１０により出水を行うと、急速に熱水を吐出することができる。また、更に加熱を続けていくと、仕切り板３０４内の水が激しく沸騰し、気泡が発生する。この気泡は逆止弁５を浮かせ、仕切り板３０４外へと気泡を排出させるが、この時に熱水も同時に逆止弁３０５から抜け、水３０２全体を加熱、昇温させる。
【０１５２】
逆止弁３０５の動作は図２４（ａ）に示すように気泡が発生していない時には仕切り板３０４に天板３２１が密着して熱を閉じこめるが、沸騰状態まで加熱すると（ｂ）に示すように気泡が逆止弁３０５を上へ持ち上げるが、逆止弁３０５の側壁ａ３２２と側壁ｂ３２３はお互い独立して天板３２１に構成されているので側壁ａ３２２と側壁ｂ３２３の間より気泡が抜け、気泡を上方から逃がす。この時、逆止弁３０５の側壁ａ３２２と側壁ｂ３２３が仕切り板３０４の内側に引っかかり、仕切り板３０４から抜けることはない。
【０１５３】
図２３に戻り、加熱された水３０２は容器３０１の底面と仕切り板３０４の底面の間に形成した隙間３０６より再び仕切り板３０４内に入り、循環加熱される。また、サーミスタＢ３０８で検出する温度でヒータ３０３を制御することにより容器３０１内全体の温度を所定の温度に保つことができる。
【０１５４】
また、湯の吐出は仕切り板３０４内部空間に連通した液体ポンプ３１０で行うため、高温の水を少量必要とする場合には、短時間で熱水を供給することができる。
【０１５５】
また、ヒータ３０３は大出力の主ヒータと小出力の補助ヒータが入っており（図示せず）、主ヒータで所定の温度まで昇温した後は補助ヒータに切り替わり、ヒステリシスを小さくして温度制御を精密に行うことができる。
【０１５６】
また、水３０２を沸騰させる場合には、主ヒータで通電させると気泡が仕切り板３０４上部より集中して噴き上がり、沸騰の勢いが強くなるため、万一沸騰中に蓋３１５を開けると湯が噴き出す危険があるため、沸騰近くの温度になると主ヒータを間欠運転させて沸騰の勢いを弱める制御を行っているので湯の噴き出しはない。
【０１５７】
また、沸騰近くの温度になると主ヒータから補助ヒータに切り替える制御を行っても沸騰の勢いを弱めることができ、上記と同様の効果を達成することができる。
【０１５８】
また、水中にはカルシウム、珪素、マグネシウム等が含まれており、湯を沸かすことによってこれらが仕切り板３０４内で析出し、スケールとなって仕切り板３０４内で堆積するが、ヒータ３０３を通電し、沸騰中に液体ポンプを運転すると、沸騰の勢いで堆積したスケールが仕切り板３０４内で舞い上がり、液体ポンプ３１０の吸い込み口である吸水パイプ３１１に入りやすくなるので沸点近くで液体ポンプ３１０を運転する際にはヒータ３０３の通電を停止させる制御を行い、スケールの舞上がりをなくし、液体ポンプ３１０へのスケール吸い込みを抑え、液体ポンプ３１０へのスケールの目話まりを抑えることができる。
【０１５９】
また、吸水パイプ３１１は仕切り板３０４の上部にできるだけ接近させている。
【０１６０】
これにより、温度の高い水ほど比重が小さく、仕切り板３０４内の上部に滞留するため、少しでも高い温度の水を吐出することができる。
【０１６１】
また、吸水パイプ３１１はフィルタ３１３で覆われているため、仕切り板３０４内で析出したスケールを液体ポンプ３１０内へ吸引されることを更に低減することができる。
【０１６２】
なお、上記の各実施の形態の相互間で可能な場合には組合せてもよい。
【０１６３】
また、上記の実施の形態において、仕切り板により仕切られる急速加熱側の容積は昇温の待ち時間の短縮という本発明の目的とカップ麺等での使用湯量から約１０００ｍｌ以下が好ましい。
【０１６４】
【発明の効果】
請求項１記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
容器の出水孔を容器底面の外周付近に設け、導水管上端部の略直上を仕切り板の頂上部としたため、遠心ポンプ等の送水装置から湯が吐出され易くすることができる。
【０１６５】
請求項２記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
また容器の出水孔を容器底面の外周付近に設け、導水管上端部の略直上を仕切り板の頂上部とし、流水経路を出水孔と反対側に設けたため、遠心ポンプ等の送水装置から湯が吐出され易くしつつ、供給する高温の湯量を増すことができる。
【０１６６】
請求項３記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
また導水管の上端付近の開口と容器の出水孔との経路を主水路とし、導水管下端付近に容器の出水孔に通じる第２の経路を設けて補水路としたため、遠心ポンプ等の送水装置による出湯後、容器内の残湯量を低減し容器内の湯を有効に使用することができる。
【０１６７】
請求項４記載の電気湯沸し器によれば、容器内に定格水量を入れ湯沸かしを開始した際、容器内の水は仕切り板により２つの部屋に分けられ、加熱手段を覆う仕切り板内部の水が仕切り板外の水よりも先に温度上昇し、沸騰する。遠心ポンプ等の送水装置を動作させると仕切り板内の湯が先に排出され、仕切り板内には下端部の流水経路を通して仕切り板下方から仕切り板外部の水が供給され、湯は導水管上部から順次排出される。このため、容器内に定格容量に近い多量の水が入っていても、仕切り板内の空間よりも少ない湯であれば短時間で高温にして供給される。また、８５°Ｃ程度の低温で保温時に再沸騰する場合も仕切り板内の湯が先に沸騰するので、同様に、仕切り板内の空間よりも少ない量の湯であれば短時間で高温にして供給され、使い勝手の良いものとできる。
仕切り板の内側で発生した気泡を効果的に排出し、気泡排出時に仕切り板外の水が仕切り板内に侵入しにくくし、仕切り板内の湯を高温に維持することができる。
【０１６８】
請求項５記載の電気湯沸し器によれば、請求項１、請求項３または請求項４と同様な効果のほか、仕切り板内部から供給される高温の湯量を増すことができる。
【０１６９】
請求項６記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果のほか、仕切り板の断熱性を高くして、仕切り板内の水温上昇を早めかつ、供給する湯温を高くすることができる。
【０１７０】
請求項７記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果のほか、仕切り板の断熱性を高めつつ、中空層の膨張によって仕切り板に生じる応力を低減することができる。
【０１７１】
請求項８記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果のほか、仕切り板の断熱性を大幅に高めつつ、中空層の膨張によって仕切り板に生じる応力を大幅に低減することができる。
【０１７２】
請求項９記載の電気湯沸し器によれば、請求項１、請求項２、請求項３または請求項４と同様な効果がある。
【０１７３】
請求項１０記載の分割加熱器によれば、仕切り板のヒータ側の気泡がある一定量溜まるまでは弁は開かず、常に閉じているので加熱効率は落ちず、良好で、また逆に、気泡がある一定量以上溜まったり、沸騰状態のとき、弁が開き気泡を逃がすので仕切り板を浮かすことがなく、一気に温水が冷えない。したがって、加熱効率が良好で安定した早沸しを行うことができる。また仕切り板のヒータ側の液温の高低に応じて弁を開閉制御する温度可変部を設けたため、仕切り板のヒータ側の液温を一定に保ちつつ、仕切り板の反ヒータ側の液体の加熱も行うことができる。
【０１７４】
請求項１１記載の分割加熱器によれば、仕切り板のヒータ側の気泡がある一定量溜まるまでは弁は開かず、常に閉じているので加熱効率は落ちず、良好で、また逆に、気泡がある一定量以上溜まったり、沸騰状態のとき、弁が開き気泡を逃がすので仕切り板を浮かすことがなく、一気に温水が冷えない。したがって、加熱効率が良好で安定した早沸しを行うことができる。また仕切り板のヒータ側の液体を加熱する内ヒータ、反ヒータ側の液体を加熱する外ヒータを設けたため、仕切り板のヒータ側の液温を一定に保ちつつ、仕切り板の反ヒータ側の液体の加熱も行うことができる。
【０１７５】
請求項１２記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、塩素除去等の浄水性能を向上させることができる。
【０１７６】
請求項１３記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、例えば容器の内側面に凸部を形成し、仕切り板に凸部と係合可能な環状リブを設けたり、仕切り板に磁石を取付けたもので、容器内の水を捨てたりするときに、仕切り板が脱落することを防止することができる。
【０１７７】
請求項１４記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、例えば仕切り板の底に突起を設けたもので、容器と一定の隙間を形成することにより、仕切り板への液体の供給を容易に、しかも安定させることができる。
【０１７８】
請求項１５記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、仕切り板の反ヒータ側の液温を確実に検知することができる。
【０１７９】
請求項１６記載の分割加熱器によれば、請求項１０または請求項１１と同様な効果のほか、仕切り板の反ヒータ側の液温が沸点に到達することなく、所定の液温以下にすることができ、出湯量の低下を防止することができる。また、仕切り板の反ヒータ側の液温が沸点に到達しないようにすれば、蓋の蒸気口からの蒸気の噴出をおさえることもできる。
【０１８０】
請求項１７記載の分割加熱器によれば、請求項１６と同様な効果のほか、仕切り板の反ヒータ側の液温が沸点に到達することなく、かつ所定の液温以下で仕切り板のヒータ側の液体の取出し中も加熱を継続することにより、出湯後の次の出湯を早く行うことができる。また、容器内全体の湯沸かしも早く行うことができる。
【図面の簡単な説明】
【図１】本発明の第１の実施の形態を示す電気湯沸し器の断面図である。
【図２】本発明の第２の実施の形態を示す電気湯沸し器の断面図である。
【図３】本発明の第３の実施の形態を示す電気湯沸し器の断面図である。
【図４】本発明の第４の実施の形態を示す電気湯沸し器の断面図である。
【図５】本発明の第５の実施の形態を示す電気湯沸し器の断面図である。
【図６】本発明の第６の実施の形態を示す電気湯沸し器の断面図である。
【図７】本発明の第７の実施の形態を示す電気湯沸し器の断面図である。
【図８】本発明の第８の実施の形態を示す電気湯沸し器の断面図である。
【図９】本発明の第９の実施の形態を示す電気湯沸し器の断面図である。
【図１０】本発明の第１０の実施の形態を示す分割加熱器の全体断面図である。
【図１１】本発明の第１０の実施の形態における弁（ａ）と仕切り板のヒータ側の飽和温度の関係を示すグラフ（ｂ）を示す図である。
【図１２】（ａ）は本発明の第１１の実施の形態を示す仕切り板の部分の断面図、（ｂ）は活性炭収容ケースの斜視図、（ｃ）は別の形態の活性炭収容ケースの断面図である。
【図１３】（ａ）は本発明の第１２の実施の形態を示す仕切り板の平面図、（ｂ）は仕切り板の部分の断面図である。
【図１４】本発明の第１３の実施の形態を示す仕切り板の部分の断面図である。
【図１５】本発明の第１７の実施の形態を示す仕切り板の部分の断面図である。
【図１６】本発明の第１８の実施の形態を示す仕切り板の部分の断面図である。
【図１７】本発明の第１９の実施の形態を示す仕切り板の部分の断面図である。
【図１８】（ａ）は本発明の第２０の実施の形態を示す仕切り板とセンサの位置関係を示す説明図、（ｂ）は本発明の第２０の実施の形態を示す仕切り板とセンサの別の位置関係を示す説明図である。
【図１９】本発明の第２１の実施の形態における仕切り板の反ヒータ側の水温と出湯量の関係を示すグラフである。
【図２０】本発明の第２２の実施の形態における仕切り板の反ヒータ側の水温と出湯量の関係を示すグラフである。
【図２１】本発明の第２３の実施の形態を示す仕切り板の部分断面図である。
【図２２】本発明の第２４の実施の形態を示す仕切り板の部分の断面図である。
【図２３】本発明の第２５の実施の形態を示す給湯器断面図である。
【図２４】その逆止弁の動作の説明図である。
【図２５】従来の電気湯沸し器の断面図である。
【図２６】従来の給湯器（電気冷温水機）の断面図である。
【符号の説明】
３ ヒータ（加熱手段）
９ 蓋
１６ 遠心ポンプ（送水装置）
３１、６１、８１ 容器
３２、６２、８２ 出水孔
３３、５１、７２、８３ 流水経路
３４、４１、６５、８４、１０１、１１１、１２１、１３１ 仕切り板
３７、４２、６６、７１、８７、１３２ 排泡孔
３８、６３、８９ 開口
３９、６４、９０ 導水管
９１ 補助孔（補水路）
１０４ 空気層
１１４、１２４ 中空層
１３３ 摺動弁
２１１ 容器
２１２ ヒータ
２１３ 仕切り板
２１４ 弁
２１５ 取湯口
２２３ 活性炭
２３３ 凸部
２３４ 環状リブ
２３６ 磁石
２３７ 二重構造部
２３９ 突起
２４０ 突起
２４１ センサ
２４２ 弁
２４７ 温度可変部
２４８ 内ヒータ
２４９ 外ヒータ
３０１ 容器
３０２ 液体
３０３ 加熱手段
３０４ 仕切り板
３０５ 逆止弁
３０７ 内部温度検出手段
３０８ 外部温度検出手段[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an electric water heater that is used mainly in general households or offices for heating and keeping a stored liquid, a divided heater as a quick boiling means such as an electric water heater, and a water heater.
[0002]
[Prior art]
A conventional electric water heater of this type was as shown in FIG. Reference numeral 1 denotes a container provided with a heater 3 serving as a heating means at the bottom with an upper opening, a flange 2 provided outwardly at the upper end. Reference numeral 4 denotes an upper frame which is provided with a cylindrical holding portion 5 in the center and which locks the container 1 in a watertight manner to the holding portion 5 via a packing 6. A hinge 7 is provided at one end. Reference numeral 8 denotes a main body for holding the container 1 while holding the upper frame 4.
[0003]
Reference numeral 9 denotes a lid that covers the upper portion of the container 1, and a pin 10 attached to one end of the lid 9 is fitted to the hinge 7 of the upper frame 4 to rotate. The lid 9 is provided with a steam port 11, penetrating from the upper side to the lower side of the lid 9, a through hole 12 is provided, and a steam passage 13 communicating the steam port 11 and the through hole 12 is attached. A plurality of vapor vent holes 14 are provided in the vicinity of the lid 9 below the through hole 12. A seal packing 15 is provided on the outer periphery of the lid 9, and the flange 2 of the container 1 is hermetically sealed by closing the lid 9.
[0004]
Reference numeral 16 denotes a centrifugal pump that constitutes a water supply device having one end connected to the bottom of the container 1 and the other end connected to a water supply pipe 17 that opens to the outside of the main body 8.
[0005]
Reference numeral 18 denotes a lock member which is provided on the opposite side of the lid 9 from the pin 10 and is urged by a spring 19 from the inside to the outside, and slides in the direction from the outside to the inside so as to overcome the urging of the spring 19. Reference numeral 20 denotes an operation knob for sliding the lock member 18. Reference numeral 21 denotes a locking portion provided on the side opposite to the hinge 7 of the upper frame 4. The pin 10 is fitted to the hinge 7, the lid 9 is rotated, and the lock member 18 is latched to the latching portion 21, thereby completing the fitting of the lid 9 to the upper frame 4. At this time, the seal packing 13 of the lid 9 hermetically seals the flange 2 at the upper end of the container 1.
[0006]
Reference numeral 22 denotes a connecting portion for supplying electricity from the outside. Reference numeral 23 denotes a temperature detection element provided in contact with the substantially center of the bottom of the container 1. A control circuit 24 controls the energization of the heater 3 with a signal from the temperature detection element 23 and controls the circuit of the operation unit 25.
[0007]
In the electric water heater configured as described above, water is supplied to the container 1. When the lid 9 is closed with the pin 10 as an axis, the lock member 18 is locked to the locking portion 21 and the seal packing 15 seals the flange 2 in a watertight manner.
[0008]
Next, electricity is supplied from the connecting portion 22. The temperature detection element 23 detects the hot water temperature through the bottom of the container 1, and the control circuit 24 energizes the heater 3 with a signal from the temperature detection element 23 to boil the water. When the water temperature eventually rises and boils, the temperature detection element 23 detects this, and the control circuit 24 cuts off the power supply to the heater 3. Thereafter, the control circuit 24 supplies the heater 3 with a signal from the temperature detection element 23. Energization is controlled to maintain a predetermined temperature.
[0009]
When hot water is desired, the operation unit 25 is operated to operate the centrifugal pump 16 to supply hot water via the water supply pipe 17.
[0010]
[Problems to be solved by the invention]
In the electric water heater having the above-described conventional configuration, when a rated amount of water is put into the container 1, the hot water cannot be used until the whole is boiled. If it is about 3L, it takes a waiting time of about 15 to 20 minutes, and it is inconvenient when urgently wanting hot water.
[0011]
Further, in order to save the power of the main body 1, it took about 3 to 5 minutes to wait for boiling time to use hot water boiled at a temperature of about 85 ° C.
[0012]
Therefore, there is a need for an electric water heater that can solve the above-mentioned conventional problems and can supply a high temperature in a short time even if a large amount of water close to the rated capacity or hot water being kept in the container is contained. It was done.
[0013]
In addition, the conventional water heater has the same problem, and an easy-to-use water heater that can rapidly raise the temperature of the liquid and raise the temperature of the liquid in the entire container in the same time as the conventional one is required.
[0014]
On the other hand, there is an example of an electric chiller / heater as an early boiling means, and one described in Japanese Utility Model Publication No. 61-170981 is known. The configuration is as shown in FIG. Reference numeral 401 denotes a tank composed of a cooling / heating unit 402 and a water storage unit 403 disposed above the cooling / heating unit 402. A cooler 404 is attached to the outer periphery of the outer wall of the cooling / heating unit 402, and a heater 405 is attached to the bottom of the cooling / heating unit 402. Reference numeral 406 denotes a partition plate (divided heater) that divides the cooling heating unit 402 and the water storage unit 403 in the tank 401, and introduces water from the water storage unit 403 to the cooling heating unit 402 or bubbles generated in the cooling heating unit 402 during heating. In order to allow the water to escape to the upper part, a water flow part 407 is provided. A control plate 410 comprising a temperature variable portion 408 made of a shape memory alloy and a water passage shielding plate 409 provided at the tip of the water passage portion 407 is attached to the cooling and heating portion 402 side.
[0015]
With the above configuration, it is possible to change the opening area of the water passing portion 407 during cold water and hot water. The water heating time can be shortened.
[0016]
However, the above-described conventional technique has a problem that even if the opening area is reduced at the time of heating, as long as the water passing portion 407 is present, the heated water always escapes to the water storage portion 403 and the heating efficiency is lowered. In addition, when the water passage 407 is fully closed, the temperature raising time is shortened and the heating efficiency is increased, but bubbles generated in the cooling and heating unit 402 have no escape space. ) Float 406 and escape from it. At that time, there is a problem that the hot water is cooled because cold water enters the cooling heating unit 402 at a stretch, and particularly when boiling the water in the cooling heating unit 402, a large amount of bubbles are generated, so the tendency is Become prominent.
[0017]
Therefore, the object of the present invention is to solve the above-mentioned conventional problems, and even if a large amount of water close to the rated capacity or hot water being kept in the container is contained, Electric water heater with a useful function that can be supplied, easy-to-use water heater that can quickly raise the temperature of the liquid and raise the temperature of the whole container in the same time as before, further generated without reducing the heating efficiency The present invention provides a divided heater that can escape bubbles (especially even when boiled).
[0018]
[Means for Solving the Problems]
  The electric water heater according to claim 1, a container for storing liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container,A water supply device for taking out the liquid in the container, and a bowl-shaped partition plate arranged in the container,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
  The water discharge hole is provided near the outer periphery of the bottom surface of the container, and the top portion of the upper end portion of the water guide pipe is the top of the partition plate.Is.
[0019]
  According to the electric water heater according to claim 1,When the rated amount of water is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the temperature inside the partition plate covering the heating means rises before the water outside the partition plate. Boil. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower side of the partition plate through the water flow path at the lower end, and the hot water is at the top of the conduit Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. In addition, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate is first boiled. Similarly, if the amount of hot water is smaller than that in the space in the partition plate, the temperature is raised in a short time. Supplied and can be made easy to use.
Since the water outlet hole of the container is provided in the vicinity of the outer periphery of the bottom surface of the container, and the upper part of the upper part of the conduit pipe is used as the top of the partition plate, hot water can be easily discharged from a water supply device such as a centrifugal pump.
[0020]
  The electric water heater according to claim 2 is:A container for storing the liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container, a water feeding device for taking out the liquid in the container, and a bowl-like shape disposed in the container A partition plate,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
The water discharge hole is provided in the vicinity of the outer periphery of the bottom surface of the container, the top right of the upper end of the water guide pipe is the top of the partition plate, and the water flow path is provided on the opposite side of the water discharge hole.Is.
[0021]
  According to the electric water heater according to claim 2, when the rated water amount is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the water inside the partition plate covering the heating means is The temperature rises and boils before the water outside the partition. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower part of the partition plate through the water flow path at the lower end, and the hot water is at the top of the water conduit. Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. Also, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate will boil first. Similarly, if the amount of hot water is smaller than the space in the partition plate, the hot water will be raised in a short time. Supplied and can be made easy to use.
In addition, since the water outlet hole of the container is provided near the outer periphery of the bottom of the container, the top right of the upper part of the conduit pipe is the top of the partition plate, and the water flow path is provided on the side opposite to the water outlet hole, The amount of hot water to be supplied can be increased while facilitating discharge.
[0022]
  The electric water heater according to claim 3 is:A container for storing the liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container, a water feeding device for taking out the liquid in the container, and a bowl-like shape disposed in the container A partition plate,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
A path between the opening near the upper end of the water conduit and the water outlet hole of the container is a main water channel, and a second path leading to the water outlet hole is provided near the lower end of the water conduit to form a supplementary water channel.
[0023]
  According to the electric water heater according to claim 3,When the rated amount of water is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the temperature inside the partition plate covering the heating means rises before the water outside the partition plate. Boil. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower side of the partition plate through the water flow path at the lower end, and the hot water is at the top of the conduit Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. In addition, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate is first boiled. Similarly, if the amount of hot water is smaller than that in the space in the partition plate, the temperature is raised in a short time. Supplied and can be made easy to use.
Further, since the path between the opening near the upper end of the water conduit and the water outlet hole of the container is the main water channel, and the second path leading to the water outlet hole of the container is provided near the lower end of the water conduit, the water supply device such as a centrifugal pump is provided. The amount of hot water remaining in the container can be reduced and the hot water in the container can be used effectively after the hot water is discharged.
[0024]
  The electric water heater according to claim 4 is:A container for storing the liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container, a water feeding device for taking out the liquid in the container, and a bowl-like shape disposed in the container A partition plate,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
A valve that opens when the bubble is raised and closes when the bubble is lowered is provided in the partition hole of the partition plate, and the valve has a weight of 2 to 5 grams per square centimeter.Is.
[0025]
  According to the electric water heater according to claim 4,When the rated amount of water is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the temperature inside the partition plate covering the heating means rises before the water outside the partition plate. Boil. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower side of the partition plate through the water flow path at the lower end, and the hot water is at the top of the conduit Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. In addition, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate is first boiled. Similarly, if the amount of hot water is smaller than that in the space in the partition plate, the temperature is raised in a short time. Supplied and can be made easy to use.
A valve that opens on the partition plate and closes on the bottom is provided in the bubble removal hole of the partition plate, and the valve has a weight of 2 to 5 grams per square centimeter, so that air bubbles generated inside the partition plate are effectively discharged. In addition, the water outside the partition plate is less likely to enter the partition plate when the bubbles are discharged, and the hot water in the partition plate can be maintained at a high temperature.
[0026]
  The electric water heater according to claim 5 is:In Claim 1, Claim 3 or Claim 4, the flowing water path is arranged substantially evenly over the entire circumference of the partition plate.Is.
[0027]
  According to the electric water heater of claim 5,Claim 1, claim 3 or claim 4In addition to the same effect, the amount of hot water supplied from the inside of the partition plate can be increased.
[0028]
  The electric water heater according to claim 6 is:In Claim 1, Claim 2, Claim 3, or Claim 4, it is set as the double structure by which the inside of the partition plate became the air layer.Is.
[0029]
  According to the electric water heater of claim 6,In addition to the same effects as in claim 1, claim 2, claim 3 or claim 4, the heat insulating property of the partition plate is increased, the water temperature rise in the partition plate is accelerated, and the supplied hot water temperature is increased. Can do.
[0030]
  The electric water heater according to claim 7,In Claim 1, Claim 2, Claim 3, or Claim 4, it is set as the double structure by which the inside of the partition plate became the hollow layer of the grade a little lower than atmospheric pressure.Is.
[0031]
  According to the electric water heater of claim 7,In addition to the effects similar to those of the first, second, third, and fourth aspects, the stress generated in the partition plate due to the expansion of the hollow layer can be reduced while enhancing the heat insulating property of the partition plate.
[0032]
  The electric water heater according to claim 8,In Claim 1, Claim 2, Claim 3, or Claim 4, it is set as the double structure by which the center of the partition plate became the vacuum hollow layer.Is.
[0033]
  According to the electric water heater of claim 8,In addition to the effects similar to those of the first, second, third, and fourth aspects, the heat generated by the partition plate can be greatly enhanced while the stress generated in the partition plate due to the expansion of the hollow layer can be greatly reduced. it can.
[0034]
  The electric water heater according to claim 9 is:In Claim 1, Claim 2, Claim 3, or Claim 4, the volume of the container bottom face covered with the partition plate is about 1000 ml or less.Is.
[0035]
  According to the electric water heater according to claim 9,Claim 1, claim 2, claim 3 or claim 4Has the same effect.
[0036]
  Claim 10The split heater includes a container having a heater for heating the stored liquid, a partition plate that divides the stored liquid into the heater side and the counter-heater side, a valve attached to the top of the partition plate, and the partition provided in the container And a hot water outlet for taking out the liquid on the heater side divided by a plate, and provided with a temperature variable portion that controls opening and closing of the valve according to the liquid temperature on the heater side of the partition plateIs.
[0037]
  Claim 10According to the divided heater, the valve is not opened until a certain amount of bubbles on the heater side of the partition plate is collected, and since it is always closed, the heating efficiency does not decrease, and on the contrary, the bubbles are more than a certain amount. When it is accumulated or boiled, the valve opens to allow bubbles to escape, so the partition plate does not float and the hot water does not cool at once. Accordingly, it is possible to carry out stable and rapid boiling with good heating efficiency. In addition, since the temperature variable part that controls the opening and closing of the valve according to the liquid temperature on the heater side of the partition plate is provided, the liquid temperature on the counter heater side of the partition plate is heated while keeping the liquid temperature on the heater side of the partition plate constant. Can also be done.
[0038]
  Claim 11The split heater includes a container having a heater for heating the stored liquid, a partition plate that divides the stored liquid into the heater side and the counter-heater side, a valve attached to the top of the partition plate, and the partition provided in the container A hot water outlet for taking out the liquid on the heater side divided by a plate, the heater being an inner heater for heating the liquid on the heater side of the partition plate, and an outer heater for heating the liquid on the counter heater side ProvidedIs.
[0039]
  Claim 11According to the divided heater, the valve is not opened until a certain amount of bubbles on the heater side of the partition plate is collected, and since it is always closed, the heating efficiency does not decrease, and on the contrary, the bubbles are more than a certain amount. When it is accumulated or boiled, the valve opens to allow bubbles to escape, so the partition plate does not float and the hot water does not cool at once. Accordingly, it is possible to carry out stable and rapid boiling with good heating efficiency. In addition, since the inner heater that heats the liquid on the heater side of the partition plate and the outer heater that heats the liquid on the counter heater side are provided, the liquid temperature on the counter heater side of the partition plate is kept constant while keeping the liquid temperature on the heater side of the partition plate constant. The heating can also be performed.
[0040]
  The split heater according to claim 12 is:In Claim 10 or Claim 11, the activated carbon was provided in the heater side of the partition plate.Is.
[0041]
  According to the divided heater according to claim 12,In addition to the same effects as those of the tenth or eleventh aspect, water purification performance such as chlorine removal can be improved.
[0042]
  The split heater according to claim 13 is:In Claim 10 or Claim 11, the partition plate is detachably attached to the container.
[0043]
  According to the divided heater according to claim 13,In addition to effects similar to those of Claim 10 or Claim 11, for example, a convex portion is formed on the inner surface of the container, an annular rib that can be engaged with the convex portion is provided on the partition plate, or a magnet is attached to the partition plate Thus, it is possible to prevent the partition plate from dropping off when the water in the container is discarded.
[0044]
  The divided heater according to claim 14,In Claim 10 or Claim 11, the clearance gap for flowing water paths was provided in the bottom of the partition plate.Is.
[0045]
  According to the divided heater according to claim 14,In addition to the same effect as that of claim 10 or 11, for example, a projection is provided on the bottom of the partition plate, and by forming a certain gap with the container, the liquid can be easily supplied to the partition plate. It can be stabilized.
[0046]
  The divided heater according to claim 15,In Claim 10 or Claim 11, the sensor which detects the liquid temperature of the non-heater side of a partition plate was provided in the outer surface of the container facing the liquid of the non-heater side of a partition plate.Is.
[0047]
  According to the divided heater according to claim 15,In addition to the same effects as those of the tenth or eleventh aspect, the liquid temperature on the side opposite to the heater of the partition plate can be reliably detected.
[0048]
  The split heater according to claim 16,In Claim 10 or Claim 11, the sensor which detects the liquid temperature of the non-heater side of a partition plate was provided, and the liquid of the counter heater side of a partition plate did not reach a boiling point.Is.
[0049]
  According to the divided heater of claim 16,In addition to the same effects as those of Claim 10 or Claim 11, the liquid temperature on the counter-heater side of the partition plate can be reduced to a predetermined liquid temperature or less without reaching the boiling point, thereby preventing a decrease in the amount of hot water. Can do. Further, if the liquid temperature on the side opposite to the heater of the partition plate does not reach the boiling point, it is possible to suppress the ejection of steam from the steam port of the lid.
[0050]
  The divided heater according to claim 17,In Claim 16, heating is continued also during extraction of the liquid of the heater side of a partition plate.Is.
[0051]
  According to the divided heater of claim 17,In addition to the same effect as that of the sixteenth aspect, the liquid temperature on the counter-heater side of the partition plate does not reach the boiling point, and the heating is continued during the extraction of the liquid on the heater side of the partition plate at a predetermined liquid temperature or lower. Thus, the next hot water after the hot water can be performed quickly. In addition, the entire inside of the container can be quickly heated.
[0074]
DETAILED DESCRIPTION OF THE INVENTION
(Embodiment 1)
A first embodiment of the present invention will be described with reference to FIG. The flange 2, the heater 3 constituting the heating means, the upper frame 4, the holding portion 5, the packing 6, the hinge 7, the main body 8, the lid 9, the pin 10, the through hole 12, the steam vent hole 14, the seal packing 15, and the water supply device. The centrifugal pump 16, the water supply pipe 17, the lock member 18, the spring 19, the operation knob 20, the locking part 21, the connection part 22, the temperature detection element 23, the control circuit 24, and the operation part 25 are the same as the conventional example. It is a function.
[0075]
A water outlet 32 that communicates with the centrifugal pump 16 is provided in the center of the bottom surface of the container 31, and a gap is formed between the bottom surface of the container 31 and the water flow path 33, and the container 3 is placed with a large diameter downward. The bowl-shaped partition plate 34 is provided with a size close to the inner diameter of the container 31 so that the outer peripheral portion surrounds the heater 3, and the interior of the container 31 includes the first space 35 and the partition plate 34 inside the partition plate 34. It is separated from the external second space 36. The material of the partition plate 34 is made of stainless steel, but is not limited to this, and any material having heat resistance such as glass, porcelain or hot water-resistant resin may be used, and it is preferable that the thermal conductivity is small. The top of the partition plate 34 is provided with a bubble removal hole 37 having a total area sufficiently reduced to about one-tenth of that of the flowing water path 33, extending upward from the water discharge hole 32, and an opening 38 near the upper end. A water conduit 39 is provided.
[0076]
The operation in the above configuration will be described. When water is poured into the container 31 and the connection portion 22 is connected to the power source and the heater 3 is energized, the water in the container 31 is heated. The interior of the container 31 is separated from the first space 35 on the heater 3 side by the partition plate 34. Since it is separated from the second space 36 on the lid 9 side, the water in the first space 35 on the heater 3 side is rapidly heated and the temperature rises. A bubble exhaust port 37 is provided at the top of the partition plate 34, but the amount of leakage from the bubble exhaust hole 37 is very small, and a part of the amount of heat received from the heater 3 leaks into the second space 36. It is. Therefore, in the first space 35, if the electric capacity of the heater 3 is about 1200 W and the volume of the first space 35 is about 700 mL, it boils in about 5 to 6 minutes according to experiments. The temperature detection element 23 can detect the temperature of the container 31 and the control circuit 24 can detect the arrival of boiling. When the centrifugal pump 16 is operated after boiling, the hot water in the first space 35 is taken out from the opening 38 above the water conduit 39 and passes through the flowing water path 33 on the lower end side of the partition plate 34 by the amount of hot water supplied to the second space 36. The low temperature water is supplied into the first space 35 and does not mix immediately with the high temperature hot water in the first space 35 due to the difference in specific gravity due to the temperature difference. The water guided from the second space 36 gradually rises from the bottom side of the container 31 and approaches the wall surface of the partition plate 34. Since the opening 38 of the water conduit 39 is located near the top of the partition plate 34, a considerable amount of the volume in the partition plate 34 is kept hot and hot water is supplied. Specifically, if the internal volume of the partition plate 34 is about 700 mL, about 500 mL can be obtained at a high temperature of about 85 ° C.
[0077]
In this way, even if a large amount of water close to the rated capacity is contained in the container 31, a small amount of hot water can be supplied at a high temperature in a short time without waiting for all the water in the container 31 to boil. . The same applies to the case where a small amount of hot water boiled while keeping the inside of the container 31 at about 85 ° C. is obtained. In this case, hot water can be obtained in about 1 minute, and only the hot water inside the partition plate is reheated. Therefore, there is an effect of reducing power consumption.
[0078]
(Embodiment 2)
A second embodiment of the present invention will be described with reference to FIG. The flange 2, the heater 3 constituting the heating means, the upper frame 4, the holding portion 5, the packing 6, the hinge 7, the main body 8, the lid 9, the pin 10, the through hole 12, the steam vent hole 14, the seal packing 15, and the water supply device. The centrifugal pump 16, the water supply pipe 17, the lock member 18, the spring 19, the operation knob 20, the locking part 21, the connection part 22, the temperature detection element 23, the control circuit 24, and the operation part 25 are the same as the conventional example. It is a function. In addition, the container 31, the water outlet 32, the opening 38, the water conduit 39, the partition plate 41, the bubble release hole 42, the sliding valve 43, the first space 44 inside the partition plate 41, and the second space outside the partition plate 41. 45 is the same as that of the first embodiment.
[0079]
The difference is that the gaps A between the container 31 and the partition plate 41 forming the flowing water path 51 are provided almost uniformly over the entire circumference of the partition plate 41. Moreover, the bubble removal hole 42 is closed from the upper side, the sliding part penetrates the bubble removal hole 42, and the sliding valve 43 provided with the latching | locking part in the lower end is provided.
[0080]
The operation in the above configuration will be described. When the centrifugal pump 16 is operated after the water in the partition plate 41 has boiled, the hot water in the first space 44 is taken out from the opening 38 above the water conduit 39 and supplied to the outside of the main body. Low-temperature water in the second space 45 is supplied into the first space 44 through the flowing water path 51 on the lower end side of the partition plate 41 by the amount of hot water supplied, and the hot water in the first space 44 Does not mix immediately due to the difference in specific gravity due to temperature difference. Then, the low-temperature water introduced into the second space 45 gradually rises from the bottom side of the container 31 and approaches the upper wall surface of the partition plate 41. At this time, since the gap A that forms the flowing water path 51 is uniform over the entire circumference of the partition plate 41, water is evenly introduced into the first space 44 from the entire periphery of the partition plate 41, and the low-temperature water is supplied. This layer rises from the bottom of the container 31 at a uniform speed and approaches the opening 38 of the water conduit 39 almost horizontally. For this reason, since hot water can be efficiently taken out from the first space 44 inside the partition plate 41 until the low temperature water layer reaches the opening 38, the amount of hot water supplied from the inside of the partition plate is increased. be able to. In addition, although the bubble outlet 37 is provided at the top of the partition plate 41, it is normally blocked by the slide valve 43, and the water in the first space 44 in the partition plate 41 becomes hot. The bubbles that are accumulated accumulate under the sliding valve 43, and the sliding valve 43 operates upward by the buoyancy of the bubbles. When the bubbles are released, the sliding valve 43 is closed by its own weight. In this way, the bubble exhaust hole 42 is usually closed, the amount of heat escaping from the first space 44 into the second space 45 is reduced, and the hot water temperature supplied from the inside of the partition plate can be increased.
[0081]
(Embodiment 3)
A third embodiment of the present invention will be described with reference to FIG. The flange 2, the heater 3 constituting the heating means, the upper frame 4, the holding portion 5, the packing 6, the hinge 7, the main body 8, the lid 9, the pin 10, the through hole 12, the steam vent hole 14, the seal packing 15, and the water supply device. The centrifugal pump 16, the water supply pipe 17, the lock member 18, the spring 19, the operation knob 20, the locking part 21, the connection part 22, the temperature detection element 23, the control circuit 24, and the operation part 25 are the same as the conventional example. It is a function.
[0082]
The difference is that the water outlet hole 62 of the container 61 is provided near the outer periphery of the bottom surface of the container 61, and the bubble discharge hole 66 is arranged with the upper part of the water guide pipe 64 having the upper end portion as the opening 63 as the top of the partition plate 65. When the water in the first space 67 in the partition plate 65 is close to the boiling point, the bubbles are opened by the buoyant force of the generated bubbles, and the bubbles are closed when the bubbles escape to the second space outside the partition plate 65. The valve 69 is provided. Reference numeral 70 denotes a flowing water path.
[0083]
With this configuration, the vicinity of the water outlet 62 is located near the water supply pipe 17, avoiding the control circuit 24, and is suitable for the arrangement of the centrifugal pump 16. In addition, the water outlet 62, the centrifugal pump 16, Therefore, the pressure drop is unlikely to occur between the water outlet 62 and the centrifugal pump 16, and the hot water temperature in the first space 67 is as high as about 98 to 99 ° C., which is close to 100 ° C. Even if it exists, it is hard to produce the cavitation which a boiling point falls by pressure fall. For this reason, the performance fall of the centrifugal pump 16 is prevented, and hot water is easily discharged.
[0084]
(Embodiment 4)
A fourth embodiment of the present invention will be described with reference to FIG. The flange 2, the heater 3 constituting the heating means, the upper frame 4, the holding portion 5, the packing 6, the hinge 7, the main body 8, the lid 9, the pin 10, the through hole 12, the steam vent hole 14, the seal packing 15, and the water supply device. The centrifugal pump 16, the water supply pipe 17, the lock member 18, the spring 19, the operation knob 20, the locking part 21, the connection part 22, the temperature detection element 23, the control circuit 24, and the operation part 25 are the same as the conventional example. It is a function. Moreover, the point which provided the water discharge hole 62 of the container 61 in the outer periphery vicinity of the container 61 bottom, and provided the water conduit 64 which has the opening 63 is the same as that of 3rd Embodiment.
[0085]
The difference is that a gap which is a water flow path 73 between the lower end of the partition plate 72 and the bottom surface of the container, in which the bubble discharge hole 71 is disposed, with the top portion of the upper end of the water conduit 64 as the top is disposed on the opposite side of the water outlet hole 62. It is provided.
[0086]
If comprised in this way, since the path | route of the hot water outlet 62 and the centrifugal pump 16 is short, the pressure drop in a centrifugal pump will become small and it can discharge hot water easily. Furthermore, since the opening 63 of the water conduit 64 is in a position biased to the front upper part in the first space 74 in the partition plate 72, if the water flow path 73 is provided on the side opposite to the water outlet hole 62 directly below the water conduit 64, The hot water in the first space 74 is easily pushed out toward the water guide pipe 64, and the hot water in the first space 74 can be effectively drawn out to increase the amount of hot water to be supplied.
[0087]
(Embodiment 5)
A fifth embodiment of the present invention will be described with reference to FIG. The flange 2, the heater 3 constituting the heating means, the upper frame 4, the holding portion 5, the packing 6, the hinge 7, the main body 8, the lid 9, the pin 10, the through hole 12, the steam vent hole 14, the seal packing 15, and the water supply device. The centrifugal pump 16, the water supply pipe 17, the lock member 18, the spring 19, the operation knob 20, the locking part 21, the connection part 22, the temperature detection element 23, the control circuit 24, and the operation part 25 are the same as the conventional example. It is a function.
[0088]
The difference is that the gap serving as the water flow path 83 is maintained between the water outlet 82 in the center of the container 81 and the bottom surface of the container 81, and the outer peripheral part is close to the inner diameter of the container 81 so as to surround the heater 3. A partition-shaped partition plate 84 provided as a size, a first space 85 inside the partition plate 84, a second space 86 outside the partition plate 84, a bubble discharge hole 87 at the top of the partition plate 84, and Is provided with a sliding valve 88 that closes the air discharge hole 87 and a water guide pipe 90 that extends upward from the water outlet hole 82 and has an opening 89 in the vicinity of the upper end, and an auxiliary hole 91 that leads to the water outlet hole 82 at the lower end of the water guide pipe 90. This is the point.
[0089]
If comprised in this way, in addition to the main water path from the opening 89 of the upper end of the water conduit 90 to the water outlet hole 82 of the container 81, the 2nd path | route which leads to the water outlet hole 82 from the auxiliary hole 91 near the lower end of the water conduit 90 is a supplementary water path. Configured as When hot water close to the rated capacity in the container 81 is taken out, if the auxiliary hole 91 is not provided, the hot water in the container 81 cannot be taken out when the water surface is lower than the lower end H1 of the opening 89 at the upper end of the water conduit 90. By providing it at the lower end of 90, hot water can be taken out until the water surface becomes H2 at the lower end of the auxiliary hole 91, and the amount of remaining hot water in the container 81 after hot water can be reduced by the centrifugal pump 16.
[0090]
(Embodiment 6)
  A sixth embodiment of the present invention will be described with reference to FIG. In the sixth embodiment, instead of the partition plate 84 of the fifth embodiment, the partition plate 101 includes a stainless inner plate 102 and an outer plate 103, and the inner plate 102 and the outer plate 103 are respectively connected to both end portions. The entire circumference is welded and sealed, and the center of the partition plate 101 is an air layer 104. Since the air layer 104 becomes a heat insulating layer, the heat insulating property of the partition plate 101 is enhanced, the amount of heat escaping to the outside through the partition plate 101 is reduced, and the water temperature inside the partition plate 101 is rapidly increased.TheSince the hot water temperature is unlikely to decrease due to the heat insulation effect after boiling, the supplied hot water temperature becomes high. As a result, power consumption can be reduced. In addition, although joining of the inner plate 102 and the outer plate 103 is welding, it is not limited to this, and other methods such as brazing may be used.
[0091]
(Embodiment 7)
A seventh embodiment of the present invention will be described with reference to FIG. In the seventh embodiment, instead of the partition plate 84 of the fifth embodiment, the partition plate 111 is composed of an inner plate 112 and an outer plate 113 made of stainless steel, and the inner plate 112 and the outer plate 113 are respectively connected to both end portions. And a double structure in which the center of the partition plate 111 becomes the hollow layer 114. The hollow layer 114 is 0.75 to 0.95 at room temperature of 10 to 30 ° C. and is slightly lower than atmospheric pressure. As a result, the hollow layer 114 having a normal temperature and an atmospheric pressure rises to about 1.3 atm at 100 ° C. to generate an internal pressure, stress is generated in the partition plate 111, and the partition plate 111 is deformed or welded to the welded portion. There are problems such as stress, but if the internal pressure of the partition plate 111 at room temperature is 0.75 to 0.95 atm, the pressure of the hollow layer will rise and fall with 1 atm between boiling water and boiling. While the heat insulation of the partition plate 111 is enhanced by the presence of the hollow layer 114, the stress generated in the partition plate due to the expansion of the hollow layer 114 can be reduced.
[0092]
(Embodiment 8)
An eighth embodiment of the present invention will be described with reference to FIG. In the eighth embodiment, instead of the partition plate 84 of the fifth embodiment, the partition plate 121 is composed of an inner plate 122 and an outer plate 123 made of stainless steel, and the inner plate 122 and the outer plate 123 are respectively connected to both ends. And a double structure in which the inside of the partition plate 121 becomes a hollow layer 124. The hollow layer 124 is evacuated to 1 / 10,000 torr or less. This degree of vacuum is about the same as that of a vacuum thermos, thereby significantly increasing the heat insulating property of the partition plate 121 and reducing the power consumption of the electric water heater body. At the same time, the hollow layer 124 has a low density of air. Therefore, the stress generated in the partition plate 121 due to the internal pressure due to the expansion can be greatly reduced, and the durability of the partition plate 121 can be enhanced.
[0093]
(Embodiment 9)
A ninth embodiment of the present invention will be described with reference to FIG. In the ninth embodiment, for example, in the sixth to eighth embodiments, the bubble discharge hole 132 of the partition plate 131 is closed from above, the sliding portion penetrates the bubble discharge hole 132, and the lower end. Is provided with a sliding valve 133 having a locking portion. The sliding valve 133 is normally closed, and the operating force that is the weight of the sliding valve 133 with respect to the opening area of the bubble removing hole 132 is set to 2 to 5 grams per square centimeter. In this way, it does not operate with the push-up force generated due to the decrease in specific gravity when the water inside the partition 131 boils, and the bubbles generated when the water boils are not discharged until the operating force of the sliding valve 133 is overcome. Without opening the valve 133, the hot water leakage from the bubble removing hole 132 to the outside of the partition plate 131 is reduced. Further, when the operating force of the sliding valve 133 is increased, the sliding valve 133 operates when a large amount of bubbles accumulates in the partition plate 131, but when the bubbles occupying the volume in the partition plate 131 come out at once. External water is supplied into the partition plate 131, and the hot water temperature in the partition plate 131 decreases. On the other hand, in the case of 5 grams per square centimeter, the decrease in hot water temperature when the bubbles in the partition plate 131 are discharged is about 5 ° C., which is practically acceptable. In this way, bubbles generated inside the partition plate 131 can be effectively discharged, water outside the partition plate can hardly enter the partition plate when the bubbles are discharged, and hot water in the partition plate can be maintained at a high temperature.
[0094]
(Embodiment 10)
A tenth embodiment of the present invention will be described with reference to FIG. In FIG. 10, 211 is a container and has a heater 212 built in at the bottom thereof. Reference numeral 213 denotes a bowl-shaped partition plate for partitioning the inside of the container 211, and is provided at the bottom of the container 211 so as to cover the heater 212. A valve 214 is attached to the highest position of the partition plate 213. On the heater side of the partition plate 213, there is a hot water outlet (water outlet hole) 215 provided in the container 211. 216 is a water conduit, 217 is a pump, 218 is a discharge port, and constitutes a water conduit. A sensor 219 such as a thermistor detects the water temperature on the heater side of the partition plate 213. Reference numeral 220 denotes an exterior body that houses built-in components such as the container 211. Reference numeral 221 denotes a lid that is rotatably attached to the exterior body 220, and a steam port 222 is formed in the lid 221. As a matter of course, watertightness is maintained for the water guide path and the like. Hot water is produced on the heater side of the partition plate 213, and the hot water can be discharged. When the pump 217 is actually driven to discharge the hot water, the heater 212 during the hot water is basically not energized. This is to prevent a decrease in flow rate due to entrainment of bubbles generated due to energization of the heater. Naturally, after the hot water is discharged, cold water enters the heater side of the partition plate 213, so it is necessary to wait until hot water is produced again.
[0095]
By the way, the partition plate 213 and the valve 214 are required to have a specific gravity of 1 or more, and the partition plate 213 has a sufficient negative buoyancy that does not float when water is supplied or when the water on the heater side or the non-heater side of the partition plate 213 is boiled. It must be adjusted by specific gravity and volume (thickness) so that If the valve 214 is too light, it is easy for hot water on the heater side of the partition plate 213 to escape, and the heating efficiency decreases. On the other hand, if it is too heavy, the temperature drop on the heater side of the partition plate 213 when the valve 214 is opened becomes large, or air bubbles accumulate on the heater side of the partition plate 213 so that the partition plate 213 tends to float. Therefore, the valve 214 does not open until a certain amount of bubbles are accumulated, and conversely, the valve 214 is adjusted so as to have a moderate negative buoyancy that allows bubbles to accumulate more than a certain amount or to boil when the bubbles boil. Must.
[0096]
With the above configuration, the valve 214 is not opened until a certain amount of bubbles on the heater side of the partition plate 213 is collected, and the heating efficiency is not lowered because the valve 214 is always closed, and conversely, the bubbles accumulate more than a certain amount. In the boiling state, the valve 214 opens and air bubbles are released, so that the partition plate 213 is not lifted, and the hot water does not cool at once. Accordingly, it is possible to carry out stable and rapid boiling with good heating efficiency.
[0097]
In the configuration of FIG. 10, the hot water outlet 215 can be taken into the center of the bottom of the container 211 at the center of the bottom of the container 211. A temperature drop when a certain amount of hot water having an actual heating volume or less is discharged can be suppressed. Also, the higher the height, the less likely the suction of scales generated in the case of hard water into the pump.
[0098]
Furthermore, if it adds about valve 214, negative buoyancy, stroke, opening area (π / 4) D2As shown in FIG. 11, the saturation temperature on the heater side of the partition plate 213 can be not only about 100 ° C. but also a certain constant temperature.
[0099]
(Embodiment 11)
An eleventh embodiment of the present invention will be described with reference to FIGS. 12 (a), (b), and (c). 12 (a) and 12 (b), 223 is activated carbon, 224 is a case for housing activated carbon 223, which is composed of a frame 225 and a mesh 226, and is provided with a claw 227. A mounting hole 228 is provided in the partition plate 213 so that it can be engaged with the claw 227 of the case 224. In this case, it is necessary to provide a sufficient gap so that bubbles do not accumulate due to the accumulation of bubbles between the heater 212 and the formation of an air layer so that the air does not burn.
[0100]
With the above configuration, the water purification performance such as chlorine removal can be improved by the catalytic action of the activated carbon 223.
[0101]
12 (c) may be used. In this case, 229 is activated carbon, 230 is a case for storing activated carbon 229, and is composed of a base 231 and a mesh 232. What is necessary is just to attach to 215.
[0102]
The rest is the same as in the tenth embodiment.
[0103]
(Embodiment 12)
Next, a twelfth embodiment of the present invention will be described with reference to FIGS. 13A and 13B, reference numeral 233 denotes a convex portion formed on the inner surface of the container 211. The partition plate 213 is provided with an annular rib 234 that can be engaged with the convex portion 233, and a concave portion 235 is formed at one place. The partition plate 213 is set as follows. The partition plate 213 is placed on the bottom of the container 211 with the positions of the recess 235 and the projection 233 aligned, and the partition plate 213 is rotated.
[0104]
With the above configuration, when the lid 221 is opened and the water in the container 211 is discarded, the partition plate 213 can be prevented from falling off.
[0105]
In addition, even if it does not form the convex part 233 in the container 211, if there exists protrusions, such as piping replaced with the convex part 233, you may utilize it.
[0106]
The rest is the same as in the tenth embodiment.
[0107]
(Embodiment 13)
A thirteenth embodiment of the present invention will be described with reference to FIG. In FIG. 14, reference numeral 236 denotes a magnet, which is attached to the partition plate 213, and is coupled to the container 211 by magnetic force when the partition plate 213 is set in the container 211. In this case, naturally, the container 211 has magnetism and must be, for example, ferritic stainless steel.
[0108]
With the above configuration, when the lid 221 is opened and the water in the container 211 is discarded, the partition plate 213 can be prevented from falling off. Further, since it is coupled to the container 211 by magnetic force, the specific gravity of the partition plate 213 does not necessarily have to be 1 or more, and it is not necessary to have a sufficient negative buoyancy that does not float, so the volume (thickness) is reduced. It can be made smaller and lighter. In some cases, the cost can be reduced.
[0109]
The rest is the same as in the tenth embodiment.
[0110]
(Embodiment 14)
Next, a fourteenth embodiment of the present invention will be described. In the present invention, the partition plate 213 is made of resin. In this case, the resin needs to be excellent in hot water resistance, and examples thereof include filler / glass-reinforced polyphenylene sulfide, polysulfone, polyether sulfone, and syndiotactic polystyrene. From the viewpoint of specific gravity, polyphenylene sulfide having a relatively large specific gravity is advantageous. Furthermore, since it is made of resin, the heat insulation is very good.
[0111]
As described above, since the partition plate 213 is made of a highly heat-insulating resin, heat radiation to the counter-heater side of the partition plate 213 is small and heating efficiency can be increased. Further, since it is made of resin, it can be formed into a shape with a high degree of freedom and is relatively inexpensive.
[0112]
Others are the same as those of the tenth embodiment.
[0113]
(Embodiment 15)
A fifteenth embodiment of the present invention will be described. In the present invention, the partition plate 213 is made of metal. In this case, it is necessary to be a metal having excellent corrosion resistance. For example, stainless steel, titanium alloy and the like can be mentioned, but SUS304 stainless steel is advantageous comprehensively from the viewpoint of heat insulation and cost.
[0114]
As described above, since the partition plate 213 is made of a tough metal, the partition plate 213 is strong without any chipping or cracking when dropped. Moreover, it is easy to remove dirt and is hygienic. If press molding is used, it is relatively inexpensive.
[0115]
Others are the same as those of the tenth embodiment.
[0116]
(Embodiment 16)
A sixteenth embodiment of the present invention will be described. In the present invention, the partition plate 213 is made of ceramic (ceramics, glass). In this case, the heat insulation is approximately between resin and metal.
[0117]
As described above, since the partition plate 213 is made of ceramic (ceramics, glass), it is chemically stable and there is almost no risk of corrosion.
[0118]
Others are the same as those of the tenth embodiment.
[0119]
(Embodiment 17)
A seventeenth embodiment of the present invention will be described with reference to FIG. In FIG. 15, reference numeral 237 denotes a double structure part of the partition plate, in which water is permeated to form a heat insulating layer. The double structure portion 237 is provided with several holes 238 that allow a slight amount of water to circulate and prevent water from stagnation completely.
[0120]
With the above configuration, good heat insulation can be obtained and heating efficiency can be improved.
[0121]
Others are the same as those of the tenth embodiment.
[0122]
(Embodiment 18)
An eighteenth embodiment of the present invention will be described with reference to FIG. In FIG. 16, reference numeral 239 denotes a protrusion, which is provided at several locations on the bottom of the partition plate 213 and forms a certain gap with the container 211.
[0123]
With the above configuration, the water supply to the partition plate 213 can be easily and stabilized. In particular, during the heating of water on the heater side of the partition plate 213, when bubbles accumulate, the valve 214 opens and water is supplied from the bottom of the partition plate 213. At that time, the water temperature change on the heater side of the partition plate 213 is reduced. As a result, the sensor 219 is convenient for sensing. This is because if there is no gap, cold water is rapidly supplied to the heater side of the partition plate 213, and the water temperature changes easily. However, since there is a certain gap, the cold water flows to the heater side of the partition plate 213 at a relatively slow flow rate. This is because the change in water temperature is reduced. In the case of FIG. 3, from the viewpoint of sensing, it is more convenient for sensing that the temperature change of the temperature detection element 23 does not abruptly take into consideration that the cold water flow does not directly go over the temperature detection element 23. It is. In short, the sliding valve 69 or the water conduit 64, the temperature detecting element 23, and the flowing water path 70 (gap) should not be on the same line. In addition, when a certain amount of hot water is desired to be discharged, it is better not to form the flowing water path 70 (gap) in the vicinity of the water conduit 64. By doing so, it becomes difficult to draw in cold water on the side opposite to the heater of the partition plate 65.
[0124]
Others are the same as those of the tenth embodiment.
[0125]
(Embodiment 19)
A nineteenth embodiment of the present invention will be described with reference to FIG. In FIG. 17, reference numeral 240 denotes a protrusion, which is provided at several locations on the outer periphery of the partition plate 213.
[0126]
With the above configuration, the play between the partition plate 213 and the container 211 is prevented, the relationship between the heater 212 and the shape of the partition plate 213 on the heater side is kept constant, changes in convection are minimized, and stable rapid boiling is achieved. It can be carried out.
[0127]
Others are the same as those of the tenth embodiment.
[0128]
(Embodiment 20)
A twentieth embodiment of the present invention will be described with reference to FIGS. 18 (a) and 18 (b). In FIG. 18A, reference numeral 241 denotes a sensor such as a thermistor for detecting the water temperature on the side opposite to the heater of the partition plate 213, which is provided on the outer surface of the container 211. In this case, it is necessary to leave a certain distance between the outer periphery of the partition plate 213 and the container 211 immediately inside the sensor 241 so that the water temperature on the counter heater side of the partition plate 213 can be sufficiently reflected.
[0129]
With the above configuration, the water temperature on the side opposite to the heater of the partition plate 213 can be reliably detected.
[0130]
As shown in FIG. 18B, the sensor 241 may be attached not to the outer surface of the container 211 but to the outer bottom surface. In this case, the division heating by the partition plate 213 needs to be performed by removing the outer bottom surface of the container 211. In this case, the outer periphery of the partition plate 213 and the inside of the sensor 241 are provided so that the water temperature on the side opposite to the heater of the partition plate 213 can be sufficiently reflected and not affected by hot water leaking from the bottom gap of the partition plate 213. It is necessary to leave a certain distance between the containers 211. In the case of providing a gap as in the eighteenth embodiment, in either of the examples (a) and (b), no gap is formed in the vicinity of the sensor 241, and the temperature of hot water leaking from the gap is not measured. In principle, the sensor 241 is not affected by this, and the temperature change of the sensor 241 is not abrupt, which is convenient for sensing.
[0131]
Others are the same as those of the tenth embodiment.
[0132]
(Embodiment 21)
A twenty-first embodiment of the present invention will be described. The basic configuration is the same as in the twentieth embodiment, and the water temperature on the side opposite to the heater of the partition plate 213 does not reach the boiling point and is equal to or lower than a predetermined water temperature.
[0133]
Here, the relationship between the water temperature on the non-heater side of the partition plate 213 and the product performance will be described. FIG. 19 shows the relationship between the water temperature on the side opposite to the heater of the partition plate 213 and the amount of hot water discharged per second. The water temperature on the heater side of the partition plate 213 immediately before the hot water is always about 100 ° C. The pump used is a rolling diaphragm pump. As shown in FIG. 19, when the water temperature on the side opposite to the heater of the partition plate 213 reaches T1, a bending point at which the amount of hot water begins to decrease appears. The cause of the decrease in the amount of hot water is considered as follows. When the hot water starts to be discharged, the heater 212 is deenergized. However, when the water temperature on the side opposite to the heater of the partition plate 213 is low, the generation of bubbles due to the residual heat of the heater 212 is immediately eliminated, and the influence of a decrease in flow rate due to entrainment of bubbles is small. Further, when the water temperature on the side opposite to the heater is low, the temperature of the hot water drawn by the pump is lowered early and reaches a critical temperature at which cavitation does not occur. However, when the water temperature on the side opposite to the heater of the partition plate 213 becomes high, bubbles due to residual heat of the heater 212 continue to be generated in the hot water, and the flow rate decreases due to entrainment of bubbles and the flow rate decreases due to cavitation. Experimentally, T1 is 85 to 95 ° C.
[0134]
As described above, since the water temperature on the side opposite to the heater of the partition plate 213 does not reach the boiling point and is equal to or lower than the predetermined water temperature, it is possible to prevent a decrease in the amount of hot water. As a method for solving this, when the water temperature on the side opposite to the heater of the partition plate 213 becomes a temperature that is somewhat lower than T1 or T1, a heating method with less residual heat, that is, switching to a heater with low power consumption, There is a method of ON-OFF.
[0135]
By the way, a phenomenon when water on the side opposite to the heater of the partition plate 213 is boiled will be described. Compared to the case of normal boiling without the partition plate 213, when boiling is performed with the partition plate 213, not only the energy of bubbles generated at the time of normal boiling, but also the bubbles generated on the heater side of the partition plate 213 are valves 214. The energy of the hot water is greatly increased due to the energy from the continuous opening of the hot water.
[0136]
However, if the water on the side opposite to the heater of the partition plate 213 does not reach the boiling point, the above phenomenon does not occur and the hot water surface in the container 211 can be stabilized.
[0137]
(Embodiment 22)
Next, a twenty-second embodiment of the present invention will be described. The basic configuration is the same as that of the twentieth embodiment, and the water on the side opposite to the heater of the partition plate 213 does not reach the boiling point, and the hot water on the heater side of the partition plate 213 is taken out at a predetermined water temperature or lower. Heating was continued inside.
[0138]
In the twenty-first embodiment, it has been described that when the water temperature on the counter heater side of the partition plate 213 is low, there is little influence of the flow rate decrease due to entrainment of bubbles or cavitation, but the present invention is the water temperature on the counter heater side of the partition plate 213. The purpose of this is to positively heat the hot water even when the hot water is discharged, and to allow the next hot water to be discharged as soon as possible after the hot water. Here, the relationship between the water temperature on the non-heater side of the partition plate 213 and the product performance will be described. FIG. 20 shows the relationship between the water temperature on the side opposite to the heater of the partition plate 213 and the amount of hot water discharged per second. As in the twenty-first embodiment, the water temperature on the heater side of the partition plate 213 immediately before the hot water is always about 100 ° C., and the pump used is a rolling diaphragm pump. As shown in FIG. 20, when the water temperature on the side opposite to the heater of the partition plate 213 reaches T2, a bending point at which the amount of discharged hot water begins to decrease appears. Therefore, heating can be continued even during tapping until the water temperature on the side opposite to the heater of the partition plate 213 reaches T2. Of course, T2 is a lower temperature than the bending point T1 without heating during tapping. Experimentally, T2 is 50-60 ° C.
[0139]
As described above, the water temperature on the side opposite to the heater of the partition plate 213 does not reach the boiling point, and the heating is continued during the extraction of hot water on the heater side of the partition plate 213 below the predetermined water temperature. The next hot water after the hot water can be performed quickly. Also, the entire inside of the container 211 can be quickly heated.
[0140]
(Embodiment 23)
A twenty-third embodiment of the present invention will be described with reference to FIG. In FIG. 21, 242 is a valve, 243 is a support part A, 244 is a bias spring, a bias spring 244 is mounted above the support part A243, urges the valve 242 upward, and the support part A243 is a partition plate. 213 is fixed. Reference numeral 245 denotes a support portion B, which is attached to a shaft 246 integrated with the valve. Reference numeral 247 denotes a temperature variable portion made of a shape memory alloy, and is attached between the support portion A243 and the support portion B245. With the above configuration, when the temperature variable portion 247 exceeds a certain water temperature, the force that the temperature variable portion 247 attempts to lower the valve 242 downward is superior to the force that the bias spring 244 biases the valve 242. The valve 242 opens. Conversely, the valve 242 is closed when the temperature variable part 247 is below a certain water temperature.
[0141]
By the way, in the embodiments so far, it is assumed that the water on the heater side of the partition plate 213 is boiled, but depending on the use situation, the temperature of the boiled water may be too high. This is the case, for example, when extracting coffee or the like, and it is desirable to keep the water temperature as constant as possible. Therefore, it is necessary to perform ON / OFF control of the heater 212 so that the water on the heater side of the partition plate 213 is not boiled and is stopped at a constant water temperature. For example, when the constant water temperature is 90 ° C., energization of the heater 212 stops when the temperature exceeds 90 ° C. However, if the heat insulating property of the partition plate 213 is high, the water temperature on the heater side of the partition plate 213 cannot be easily lowered to the water temperature at which the heater 212 is energized again. There arises a problem that the side water is hardly heated.
[0142]
Here, the operation of the valve 242 according to this configuration will be described. For example, when the constant water temperature is 90 ° C., energization of the heater 212 stops when it exceeds 90 ° C. On the other hand, if the valve 242 is set to open at 90 ° C., for example, the water temperature on the heater side of the partition plate 213 decreases, the heater 212 is energized again, and the valve 242 is closed.
[0143]
With the above configuration, the heating of the water on the side opposite to the heater of the partition plate 213 can be performed while the water temperature on the heater side of the partition plate 213 is kept constant by repeating the ON / OFF control of the heater 212 and the opening and closing of the valve 242. .
[0144]
Others are the same as those of the tenth embodiment.
[0145]
(Embodiment 24)
Next, a twenty-fourth embodiment of the present invention will be described with reference to FIG. In FIG. 22, reference numeral 248 denotes an inner heater, which is built in the bottom of the container 211. An outer heater 249 is provided on the outer surface of the container 211. Reference numeral 250 denotes an inner sensor, and reference numeral 251 denotes an outer sensor, which detects the water temperature on the heater side and the counter heater side of the partition plate 213, respectively.
[0146]
The purpose of this configuration is to heat the water on the counter heater side of the partition plate 213 while keeping the water temperature on the heater side of the partition plate 213 constant, as in the twenty-third embodiment. Here, the operation of this configuration will be described. First, water on the heater side of the partition plate 213 is heated by the inner heater 248. The inner sensor 250 detects that the water on the heater side of the partition plate 213 has reached a predetermined water temperature, and the energization of the inner heater 248 is stopped. Next, energization to the outer heater 249 is started, and water on the side opposite to the heater of the partition plate 213 is heated. If there is hot water in the middle and the water on the heater side of the partition plate 213 is cooled, the energization to the inner heater 248 is started again, and the energization to the outer heater 249 is stopped at the same time. Such an operation is repeated until the water in the entire container 211 reaches a constant temperature.
[0147]
According to the above configuration, the water on the side opposite to the heater of the partition plate 213 can be heated while keeping the water temperature on the heater side of the partition plate 213 constant.
[0148]
In addition, although power consumption becomes high, you may energize the inner heater 248 and the outer heater 249 simultaneously.
[0149]
Others are the same as those of the tenth embodiment.
[0150]
(Embodiment 25)
A twenty-fifth embodiment of the present invention will be described with reference to FIGS. In FIG. 23, reference numeral 301 denotes a container for storing a liquid 302 such as water, and a heater 303 is attached to the bottom surface of the container 301. A partition plate 304 that forms a substantially sealed space made of a material having a specific gravity heavier than water, such as PPS resin, is installed at the bottom of the container 301. A check valve 305 for discharging bubbles generated by boiling upward is provided at the upper part of the partition plate 304. This check valve 305 is also made of PPS resin having a specific gravity heavier than water, like the partition plate 304. A contact portion between the bottom surface of the partition plate 304 and the bottom surface of the container 301 is provided with a gap 306 of about 0.1 to 2 mm, and when water in the partition plate 304 escapes from the check valve 305 due to boiling, the water 302 is separated from the partition plate 304. It circulates inside. The gap 306 is formed by providing several convex portions on the bottom surface of the partition plate 304. A thermistor A 307 detects the water temperature inside the partition plate 304, and a thermistor B 308 detects the water temperature outside the partition plate 304. A liquid pump 310 discharges hot water, communicates with the internal space of the partition plate 304, is connected to a water absorption pipe 311 protruding upward from the bottom of the container 301, and discharges hot water from the water discharge pipe 312 to the outside. A stainless steel mesh filter 313 covers the water absorption pipe 311 together with the bottom surface of the container 301. Reference numeral 314 denotes a main body for storing the container 301, and a lid 315 that opens and closes when water is put into the container 301 is provided at the upper portion, and a steam port 316 that discharges steam to the outside is opened in the lid 315.
[0151]
In the case of the twenty-fifth embodiment, the water at the bottom of the container 301 is substantially sealed by the partition plate 304, so that the heat of the heater 303 is concentrated and the temperature can be rapidly raised. In the twenty-fifth embodiment, the time required to boil about 250 ml of water was about 2 minutes. At this time, when the thermistor A307 detects the water temperature in the partition plate 304, the completion of boiling water is displayed on the display unit (not shown) of the main body, and when the water is discharged by the liquid pump 310, hot water can be discharged rapidly. it can. As heating continues further, the water in the partition plate 304 boils violently and bubbles are generated. This bubble floats the check valve 5 and discharges the bubble to the outside of the partition plate 304. At this time, hot water also escapes from the check valve 305 at the same time, and heats and raises the temperature of the entire water 302.
[0152]
As shown in FIG. 24A, the check valve 305 operates as shown in FIG. 24B when the top plate 321 comes into close contact with the partition plate 304 and traps heat when no bubbles are generated. However, since the side wall a322 and the side wall b323 of the check valve 305 are formed independently of each other on the top plate 321, the air bubbles are released from the space between the side wall a322 and the side wall b323. Escape from above. At this time, the side wall a 322 and the side wall b 323 of the check valve 305 are caught inside the partition plate 304 and do not come out of the partition plate 304.
[0153]
Returning to FIG. 23, the heated water 302 enters the partition plate 304 again through the gap 306 formed between the bottom surface of the container 301 and the bottom surface of the partition plate 304 and is circulated and heated. Further, by controlling the heater 303 with the temperature detected by the thermistor B308, the temperature inside the container 301 can be kept at a predetermined temperature.
[0154]
Moreover, since hot water is discharged by the liquid pump 310 communicated with the internal space of the partition plate 304, hot water can be supplied in a short time when a small amount of high-temperature water is required.
[0155]
The heater 303 includes a high-output main heater and a small-output auxiliary heater (not shown). After the temperature is raised to a predetermined temperature by the main heater, the heater 303 is switched to the auxiliary heater to reduce the hysteresis and control the temperature. Can be performed precisely.
[0156]
  In addition, when water 302 is boiled, if the main heater is energized, bubbles are concentrated and spouted from the upper part of the partition plate 304, and the boiling momentum becomes stronger.315If the temperature is close to boiling, the main heater is operated intermittently.boilingThere is no spout of hot water because of the control to weaken the momentum.
[0157]
Moreover, even if it controls to switch from a main heater to an auxiliary heater when it becomes the temperature near boiling, the momentum of boiling can be weakened and the effect similar to the above can be achieved.
[0158]
In addition, the water contains calcium, silicon, magnesium, etc., and these are deposited in the partition plate 304 by boiling the hot water, and become scales and accumulate in the partition plate 304, but the heater 303 is energized. When the liquid pump is operated during boiling, the scale accumulated at the moment of boiling rises in the partition plate 304 and easily enters the water absorption pipe 311 that is the suction port of the liquid pump 310. Therefore, the liquid pump 310 is operated near the boiling point. At this time, control to stop the energization of the heater 303 is performed, the scale is prevented from rising, the suction of the scale into the liquid pump 310 is suppressed, and the visibility of the scale into the liquid pump 310 can be suppressed.
[0159]
The water absorption pipe 311 is as close as possible to the upper part of the partition plate 304.
[0160]
As a result, the higher the temperature of the water, the smaller the specific gravity, and the water stays in the upper part of the partition plate 304, so that even a little higher temperature water can be discharged.
[0161]
Further, since the water absorption pipe 311 is covered with the filter 313, it is possible to further reduce the suction of the scale deposited in the partition plate 304 into the liquid pump 310.
[0162]
In addition, you may combine when it is possible between each said embodiment.
[0163]
In the above embodiment, the volume on the rapid heating side partitioned by the partition plate is preferably about 1000 ml or less from the object of the present invention of shortening the waiting time for temperature rise and the amount of hot water used in cup noodles and the like.
[0164]
【The invention's effect】
  According to the electric water heater according to claim 1,When the rated amount of water is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the temperature inside the partition plate covering the heating means rises before the water outside the partition plate. Boil. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower side of the partition plate through the water flow path at the lower end, and the hot water is at the top of the conduit Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. In addition, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate is first boiled. Similarly, if the amount of hot water is smaller than that in the space in the partition plate, the temperature is raised in a short time. Supplied and can be made easy to use.
Since the water outlet hole of the container is provided in the vicinity of the outer periphery of the bottom surface of the container, and the upper part of the upper part of the conduit pipe is used as the top of the partition plate, hot water can be easily discharged from a water supply device such as a centrifugal pump.
[0165]
  According to the electric water heater according to claim 2, when the rated water amount is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the water inside the partition plate covering the heating means is The temperature rises and boils before the water outside the partition. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower part of the partition plate through the water flow path at the lower end, and the hot water is at the top of the water conduit. Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. Also, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate will boil first. Similarly, if the amount of hot water is smaller than the space in the partition plate, the hot water will be raised in a short time. Supplied and can be made easy to use.
In addition, since the water outlet hole of the container is provided near the outer periphery of the bottom of the container, the top right of the upper part of the conduit pipe is the top of the partition plate, and the water flow path is provided on the side opposite to the water outlet hole, The amount of hot water to be supplied can be increased while facilitating discharge.
[0166]
  According to the electric water heater according to claim 3,When the rated amount of water is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the temperature inside the partition plate covering the heating means rises before the water outside the partition plate. Boil. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower side of the partition plate through the water flow path at the lower end, and the hot water is at the top of the conduit Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. In addition, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate is first boiled. Similarly, if the amount of hot water is smaller than that in the space in the partition plate, the temperature is raised in a short time. Supplied and can be made easy to use.
Further, since the path between the opening near the upper end of the water conduit and the water outlet hole of the container is the main water channel, and the second path leading to the water outlet hole of the container is provided near the lower end of the water conduit, the water supply device such as a centrifugal pump is provided. The amount of hot water remaining in the container can be reduced and the hot water in the container can be used effectively after the hot water is discharged.
[0167]
  According to the electric water heater according to claim 4,When the rated amount of water is put in the container and the water heating is started, the water in the container is divided into two rooms by the partition plate, and the temperature inside the partition plate covering the heating means rises before the water outside the partition plate. Boil. When a water supply device such as a centrifugal pump is operated, the hot water in the partition plate is discharged first, and water outside the partition plate is supplied from the lower side of the partition plate through the water flow path at the lower end, and the hot water is at the top of the conduit Are discharged sequentially. For this reason, even if a large amount of water close to the rated capacity is contained in the container, hot water is supplied at a high temperature in a short time if it is less hot water than the space in the partition plate. In addition, when re-boiling is performed at a low temperature of about 85 ° C., the hot water in the partition plate is first boiled. Similarly, if the amount of hot water is smaller than that in the space in the partition plate, the temperature is raised in a short time. Supplied and can be made easy to use.
Air bubbles generated inside the partition plate can be effectively discharged, water outside the partition plate can hardly enter the partition plate when the bubbles are discharged, and hot water in the partition plate can be maintained at a high temperature.
[0168]
  According to the electric water heater of claim 5,In addition to the same effects as those of the first, third, and fourth aspects, the amount of hot water supplied from the inside of the partition plate can be increased.
[0169]
  According to the electric water heater of claim 6,In addition to the same effects as in claim 1, claim 2, claim 3 or claim 4, the heat insulating property of the partition plate is increased, the water temperature rise in the partition plate is accelerated, and the supplied hot water temperature is increased. Can do.
[0170]
  According to the electric water heater of claim 7,In addition to the effects similar to those of the first, second, third, and fourth aspects, the stress generated in the partition plate due to the expansion of the hollow layer can be reduced while enhancing the heat insulating property of the partition plate.
[0171]
  According to the electric water heater of claim 8,In addition to the effects similar to those of the first, second, third, and fourth aspects, the heat generated by the partition plate can be greatly enhanced while the stress generated in the partition plate due to the expansion of the hollow layer can be greatly reduced. it can.
[0172]
  According to the electric water heater according to claim 9,Claim 1, claim 2, claim 3 or claim 4Has the same effect.
[0173]
  Claim 10Split heaterAccording toThe valve is not opened until a certain amount of bubbles on the heater side of the partition plate is collected, and it is always closed, so the heating efficiency does not decrease, and it is good, and conversely, when a certain amount of bubbles accumulates or is boiling Because the valve opens and air bubbles are released, the partition plate does not float and the hot water does not cool at once. Accordingly, it is possible to carry out stable and rapid boiling with good heating efficiency. In addition, since the temperature variable part that controls the opening and closing of the valve according to the liquid temperature on the heater side of the partition plate is provided, the liquid temperature on the counter heater side of the partition plate is heated while keeping the liquid temperature on the heater side of the partition plate constant. Can also be done.
[0174]
  Claim 11Split heaterAccording toThe valve is not opened until a certain amount of bubbles on the heater side of the partition plate is collected, and it is always closed, so the heating efficiency does not decrease, and it is good, and conversely, when a certain amount of bubbles accumulates or is boiling Because the valve opens and air bubbles are released, the partition plate does not float and the hot water does not cool at once. Accordingly, it is possible to carry out stable and rapid boiling with good heating efficiency. In addition, since the inner heater that heats the liquid on the heater side of the partition plate and the outer heater that heats the liquid on the counter heater side are provided, the liquid temperature on the counter heater side of the partition plate is kept constant while keeping the liquid temperature on the heater side of the partition plate constant. The heating can also be performed.
[0175]
  According to the divided heater according to claim 12,In addition to the same effects as those of the tenth or eleventh aspect, water purification performance such as chlorine removal can be improved.
[0176]
  According to the divided heater according to claim 13,In addition to effects similar to those of Claim 10 or Claim 11, for example, a convex portion is formed on the inner surface of the container, an annular rib that can be engaged with the convex portion is provided on the partition plate, or a magnet is attached to the partition plate Thus, it is possible to prevent the partition plate from dropping off when the water in the container is discarded.
[0177]
  According to the divided heater according to claim 14,In addition to the same effect as that of claim 10 or 11, for example, a projection is provided on the bottom of the partition plate, and by forming a certain gap with the container, the liquid can be easily supplied to the partition plate. It can be stabilized.
[0178]
  According to the divided heater according to claim 15,In addition to the same effects as those of the tenth or eleventh aspect, the liquid temperature on the side opposite to the heater of the partition plate can be reliably detected.
[0179]
  According to the divided heater of claim 16,In addition to the same effects as those of Claim 10 or Claim 11, the liquid temperature on the counter-heater side of the partition plate can be reduced to a predetermined liquid temperature or less without reaching the boiling point, thereby preventing a decrease in the amount of hot water. Can do. Further, if the liquid temperature on the side opposite to the heater of the partition plate does not reach the boiling point, it is possible to suppress the ejection of steam from the steam port of the lid.
[0180]
  According to the divided heater of claim 17,In addition to the same effect as that of the sixteenth aspect, the liquid temperature on the counter-heater side of the partition plate does not reach the boiling point, and the heating is continued during the extraction of the liquid on the heater side of the partition plate at a predetermined liquid temperature or lower. Thus, the next hot water after the hot water can be performed quickly. In addition, the entire inside of the container can be quickly heated.
[Brief description of the drawings]
FIG. 1 is a cross-sectional view of an electric water heater showing a first embodiment of the present invention.
FIG. 2 is a sectional view of an electric water heater showing a second embodiment of the present invention.
FIG. 3 is a cross-sectional view of an electric water heater showing a third embodiment of the present invention.
FIG. 4 is a sectional view of an electric water heater showing a fourth embodiment of the present invention.
FIG. 5 is a cross-sectional view of an electric water heater showing a fifth embodiment of the present invention.
FIG. 6 is a cross-sectional view of an electric water heater showing a sixth embodiment of the present invention.
FIG. 7 is a cross-sectional view of an electric water heater showing a seventh embodiment of the present invention.
FIG. 8 is a sectional view of an electric water heater showing an eighth embodiment of the present invention.
FIG. 9 is a cross-sectional view of an electric water heater showing a ninth embodiment of the present invention.
FIG. 10 is an overall cross-sectional view of a divided heater showing a tenth embodiment of the present invention.
FIG. 11 is a graph (b) showing a relationship between a valve (a) and a saturation temperature on the heater side of a partition plate in the tenth embodiment of the present invention.
12A is a cross-sectional view of a part of a partition plate showing an eleventh embodiment of the present invention, FIG. 12B is a perspective view of an activated carbon storage case, and FIG. 12C is an activated carbon storage case of another form. It is sectional drawing.
13A is a plan view of a partition plate showing a twelfth embodiment of the present invention, and FIG. 13B is a cross-sectional view of a portion of the partition plate.
FIG. 14 is a sectional view of a part of a partition plate showing a thirteenth embodiment of the present invention.
FIG. 15 is a sectional view of a part of a partition plate showing a seventeenth embodiment of the present invention.
FIG. 16 is a sectional view of a part of a partition plate showing an eighteenth embodiment of the present invention.
FIG. 17 is a sectional view of a part of a partition plate showing a nineteenth embodiment of the present invention.
18A is an explanatory view showing the positional relationship between a partition plate and a sensor according to the twentieth embodiment of the present invention, and FIG. 18B is a partition plate and sensor according to the twentieth embodiment of the present invention. It is explanatory drawing which shows another positional relationship.
FIG. 19 is a graph showing the relationship between the water temperature on the side opposite to the heater of the partition plate and the amount of hot water in a twenty-first embodiment of the present invention.
FIG. 20 is a graph showing the relationship between the water temperature on the side opposite to the heater of the partition plate and the amount of hot water in a twenty-second embodiment of the present invention.
FIG. 21 is a partial sectional view of a partition plate showing a twenty-third embodiment of the present invention.
FIG. 22 is a sectional view of a part of a partition plate showing a twenty-fourth embodiment of the present invention.
FIG. 23 is a sectional view of a water heater showing a twenty-fifth embodiment of the present invention.
FIG. 24 is an explanatory view of the operation of the check valve.
FIG. 25 is a sectional view of a conventional electric water heater.
FIG. 26 is a cross-sectional view of a conventional water heater (electric cold / hot water machine).
[Explanation of symbols]
3 Heater (heating means)
9 Lid
16 Centrifugal pump (water supply device)
31, 61, 81 containers
32, 62, 82
33, 51, 72, 83 Flow path
34, 41, 65, 84, 101, 111, 121, 131 Partition plate
37, 42, 66, 71, 87, 132
38, 63, 89 opening
39, 64, 90
91 Auxiliary hole (reservoir channel)
104 Air layer
114, 124 Hollow layer
133 Sliding valve
211 containers
212 heater
213 Partition plate
214 Valve
215 tap
223 activated carbon
233 Convex
234 annular rib
236 Magnet
237 Double structure part
239 protrusion
240 protrusions
241 Sensor
242 Valve
247 Temperature variable part
248 Heater inside
249 Outside heater
301 containers
302 liquid
303 Heating means
304 Partition plate
305 Check valve
307 Internal temperature detection means
308 External temperature detection means

Claims (17)

液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記出水孔が前記容器の底面の外周付近に設けられ、前記導水管の上端部の略直上が前記仕切り板の前記頂上部とされた電気湯沸し器。 A container for storing the liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container, a water feeding device for taking out the liquid in the container, and a bowl-like shape disposed in the container A partition plate,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
An electric water heater in which the water discharge hole is provided in the vicinity of the outer periphery of the bottom surface of the container, and the top of the water guide pipe is directly above the top of the partition plate . 液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記出水孔が前記容器底面の外周付近に設けられ、前記導水管の上端部の略直上が前記仕切り板の前記頂上部とされ、前記流水経路が前記出水孔と反対側に設けられた電気湯沸し器。 A container for storing the liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container, a water feeding device for taking out the liquid in the container, and a bowl-like shape disposed in the container A partition plate,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
The water heater is provided in the vicinity of the outer periphery of the bottom surface of the container, the top of the water guide pipe is directly above the top of the partition plate, and the water flow path is provided on the opposite side of the water outlet. vessel. 液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記導水管の上端付近の前記開口と前記容器の前記出水孔との経路を主水路とし、前記導水管の下端付近に前記出水孔に通じる第２の経路を設けて補水路とした電気湯沸し器。 A container for storing the liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container, a water feeding device for taking out the liquid in the container, and a bowl-like shape disposed in the container A partition plate,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
An electric water heater in which the path between the opening near the upper end of the water conduit and the water outlet hole of the container is a main water channel, and a second path leading to the water outlet hole is provided near the lower end of the water conduit to form a supplementary water channel . 液体を収納する容器と、この容器又は容器内の液体を加熱する加熱手段と、前記容器の上部を覆う蓋と、前記容器内の液体を取り出す送水装置と、前記容器内に配置した碗状の仕切り板とを備え、
前記仕切り板で覆われた前記容器の底面に前記送水装置へ通じる出水孔を設け、前記仕切り板の下端と前記容器の底面との間に流水経路を形成し、前記仕切り板の頂上部に排泡孔を設け、前記出水孔から上向きに延長し上端付近が開口した導水管を設け、
前記仕切り板の前記排泡孔に、上昇により開弁し下降により閉弁する弁を設け、前記弁を１平方センチメートル当たり２から５グラムの重量にした電気湯沸し器。 A container for storing the liquid, a heating means for heating the container or the liquid in the container, a lid for covering the upper part of the container, a water feeding device for taking out the liquid in the container, and a bowl-like shape disposed in the container A partition plate,
A water outlet hole leading to the water feeding device is provided on the bottom surface of the container covered with the partition plate, a water flow path is formed between the lower end of the partition plate and the bottom surface of the container, and the top of the partition plate is drained. Provided with a bubble hole, provided with a water conduit that extends upward from the outlet hole and opened near the upper end,
An electric water heater in which a valve that opens when the bubble is lifted and closes when the valve is lowered is provided in the bubble removing hole of the partition plate, and the valve has a weight of 2 to 5 grams per square centimeter . 前記流水経路を、前記仕切り板の全周にわたり略均等に配した請求項１、請求項３または請求項４記載の電気湯沸し器。The electric water heater according to claim 1, 3 or 4, wherein the flowing water path is arranged substantially evenly over the entire circumference of the partition plate . 前記仕切り板の内部が空気層となった２重構成とする請求項１、請求項２、請求項３または請求項４記載の電気湯沸し器。The electric water heater according to claim 1, 2, 3, or 4, wherein the partition plate has a double structure in which an air layer is formed inside . 前記仕切り板の内部が大気圧より若干低い程度の中空層となった２重構成とする請求項１、請求項２、請求項３または請求項４記載の電気湯沸し器。 5. The electric water heater according to claim 1, claim 2, claim 3, or claim 4, wherein the partition plate has a double structure in which the inside of the partition plate is a hollow layer slightly lower than atmospheric pressure . 前記仕切り板の内部が真空の中空層となった２重構成とする請求項１、請求項２、請求項３または請求項４記載の電気湯沸し器。The electric water heater according to claim 1, 2, 3, or 4, wherein the inside of the partition plate has a double structure in which a vacuum hollow layer is formed . 前記仕切り板により覆われた前記容器底面側の容積は、約１０００ｍｌ以下である請求項１、請求項２、請求項３または請求項４記載の電気湯沸し器。 5. The electric water heater according to claim 1, wherein the volume of the container bottom face covered with the partition plate is about 1000 ml or less . 収容液体を加熱するヒータを有する容器と、前記収容液体を前記ヒータ側と反ヒータ側に分割する仕切り板と、この仕切り板の頂部に取付けた弁と、前記容器に設けられ前記仕切り板により分割された前記ヒータ側の前記収容液体を取出す取湯口とを備え、前記仕切り板の前記ヒータ側の液温の高低に応じて前記弁を開閉制御する温度可変部を設けた分割加熱器。 A container having a heater that heats the stored liquid, a partition plate that divides the stored liquid into the heater side and the counter-heater side, a valve that is attached to the top of the partition plate, and a partition plate that is provided in the container and is divided by the partition plate A divided heater provided with a temperature variable unit that opens and closes the valve according to the liquid temperature on the heater side of the partition plate . 収容液体を加熱するヒータを有する容器と、前記収容液体を前記ヒータ 側と反ヒータ側に分割する仕切り板と、この仕切り板の頂部に取付けた弁と、前記容器に設けられ前記仕切り板により分割された前記ヒータ側の前記収容液体を取出す取湯口とを備え、前記ヒータは前記仕切り板の前記ヒータ側の前記収容液体を加熱する内ヒータであり、前記反ヒータ側の前記収容液体を加熱する外ヒータを設けた分割加熱器。 A container having a heater that heats the stored liquid, a partition plate that divides the stored liquid into the heater side and the counter-heater side, a valve that is attached to the top of the partition plate, and a partition plate that is provided in the container and is divided by the partition plate And a hot water outlet for taking out the stored liquid on the heater side. The heater is an inner heater that heats the stored liquid on the heater side of the partition plate, and heats the stored liquid on the counter-heater side. Split heater with an external heater . 前記仕切り板の前記ヒータ側に活性炭を備えた請求項１０または請求項１１記載の分割加熱器。The split heater according to claim 10 or 11, wherein activated carbon is provided on the heater side of the partition plate . 前記仕切り板を容器に着脱自在に取付けた請求項１０または請求項１１記載の分割加熱器。The split heater according to claim 10 or 11, wherein the partition plate is detachably attached to the container . 前記仕切り板の底に流水経路用の隙間を設けた請求項１０または請求項１１記載の分割加熱器。The divided heater according to claim 10 or 11, wherein a gap for a flowing water path is provided at the bottom of the partition plate . 前記仕切り板の前記反ヒータ側の液温を検知するセンサを前記仕切り板の反ヒータ側の液体と面する容器の外面に設けた請求項１０または請求項１１記載の分割加熱器。The split heater according to claim 10 or 11, wherein a sensor for detecting a liquid temperature on the side opposite to the heater of the partition plate is provided on an outer surface of the container facing the liquid on the side opposite to the heater of the partition plate . 前記仕切り板の前記反ヒータ側の液温を検知するセンサを備え、前記仕切り板の前記反ヒータ側の前記収容液体が沸点に到達しないようにした請求項１０または請求項１１記載の分割加熱器。 12. The split heater according to claim 10, further comprising a sensor that detects a liquid temperature on the side opposite to the heater of the partition plate so that the liquid stored on the side opposite to the heater of the partition plate does not reach a boiling point . . 前記仕切り板の前記ヒータ側の前記収容液体の取出し中も加熱を継続する請求項１６記載の分割加熱器。The split heater according to claim 16, wherein heating is continued even during extraction of the stored liquid on the heater side of the partition plate .
JP25033699A 1999-09-03 1999-09-03 Electric water heater, split heater and water heater Expired - Lifetime JP4097854B2 (en)

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GB0902726D0 (en) * 2009-02-18 2009-04-01 Otter Controls Ltd Liquid heating appliances
CN106901597A (en) * 2015-12-23 2017-06-30 浙江绍兴苏泊尔生活电器有限公司 Liquid heating container
CN112478456A (en) * 2020-12-07 2021-03-12 萍乡市长远工艺有限公司 Food jar lid and food jar
CN114617431B (en) * 2021-12-14 2023-12-08 九阳股份有限公司 Rolling brewing type instant drinking machine

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