JP2004194968A

JP2004194968A - Electric water heater

Info

Publication number: JP2004194968A
Application number: JP2002367980A
Authority: JP
Inventors: Noboru Matsuda; 昇松田
Original assignee: Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Holdings Corp
Priority date: 2002-12-19
Filing date: 2002-12-19
Publication date: 2004-07-15
Anticipated expiration: 2022-12-19
Also published as: JP3876831B2

Abstract

<P>PROBLEM TO BE SOLVED: To make hot water hardly leaked to outside from the seal part of a lid in spite of tilting the body of an electric water heater forward. <P>SOLUTION: The water heater is provided with: an outer casing 31; a container 32 provided in the outer casing 31 for housing water; the lid 33 for covering the upper opening part of the container 32; a steam path 45 and a steam discharging port 35 provided at the lid 33 for discharging steam generated when water in the container 32 is heated; and a valve seat chamber 34 comprising a valve port 46 provided inside of the lid 33 for discharging the generated steam to the steam path 45, a check valve 47 operating in the case of overturning to close the valve port 46, and a valve seat 48 for housing and sliding the check valve 47. In order to avoid rise of inner pressure when the check valve 47 operates to close the valve port 46 in the case of tilting forward, a gap is provided between the valve seat chamber 34 and the steam path 45. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

【０００１】
【発明の属する技術分野】
本発明は、電気湯沸かし器の蓋体構造に関するものである。
【０００２】
【従来の技術】
従来、この種の電気湯沸かし器としては、図７に示すようなものがあった。図７は電気湯沸かし器の要部拡大断面図であり、蓋体１は外蓋２と、蓋カバー３と飾り枠４とより構成されており、外蓋２に設けたボス５に蓋カバー３と飾り枠４とに夫々設けた孔６、７を介して取り付け体８を取り付けることにより外蓋２と蓋カバー３と飾り枠４とを一体とし、蓋体１を設けていた（例えば、特許文献１参照）。
【０００３】
前述の構成では構造が複雑であり、組立て工数もかかるので、図８に示すような構成が考えられた。図８は従来の他の電気湯沸かし器の要部拡大断面図である。図において、電気湯沸かし器は外郭１１と、外郭１１内に配設された上面が開口した開口部を有した容器１２と、容器１２の開口部を覆う蓋体１３とで構成されている。ここで蓋体１３は、外周に容器１２のフランジ部１２ａをシールするパッキング１４が装着された内蓋１５と、パッキング１４との当接面に三角リブ（図示せず）を設けてシールした中蓋１６と、外蓋１７とで構成されている。
【０００４】
また、蓋体１３の内部には容器１２内の水が加熱された時に発生する蒸気を外部へ排出するための蒸気通路１８と、蒸気排出口１９と弁座室２０が設けられている。さらに、弁座室２０には全方向転倒時、すなわち、電気湯沸かし器がどの方向に転倒したときでも動作して弁口２０を閉じ、蒸気の流れを遮断する逆止弁２２と、逆止弁２２を収容しかつ摺動させる弁座２３とが内包されている。
【０００５】
【特許文献１】
特開平１１−４７６３号公報
【０００６】
【発明が解決しようとする課題】
このような従来の構成では、内蓋１５と中蓋１６とを組み付けに締め代を設けて、内蓋１５の外周に装着したパッキング１４の平面部を中蓋１６に設けた三角リブで圧接シールしているため、パッキング１４と中蓋１６とのシール性能に限界があり、傾斜時に逆止弁２０が動作して弁口１９を封鎖すると、内圧が上昇してパッキング１４と中蓋１６のシール部から漏水する。この漏水の程度はＪＩＳＣ−９２１３魔法瓶の規格に準じて用いる転倒時の漏水量５０ｃｃ／１０秒を満足するものの周囲を濡らすという問題があった。
【０００７】
特に、使用者が電気湯沸かし器に接する場合、使用者は出湯口のある前面に対向する場合が多い。したがって、使用者は誤って電気湯沸かし器の上部を抑えて前方へ傾けたり、あるいは、手で両側を挟んで前へ傾けたりすることが多々ある。すると前述のように漏水し、漏水した湯は傾斜にしたがって前方へ移動し、出湯口に達し、そこより下方へ滴下する。漏水が出湯口の近辺を流れることは衛生上好ましくない。また、使用者が熱い湯にふれる恐れがあるという安全上の問題もあった。
【０００８】
本発明は前記課題を解決するもので、使用者が器体を前方に傾けても湯がほとんど漏水することがなく、衛生的で、かつ使い勝手のよい電気湯沸かし器を提供することを目的とする。
【０００９】
【課題を解決するための手段】
前記課題を解決するために、本発明は、水を収容する容器の上方開口部を覆う蓋体と、前記蓋体の内部に設けた発生した蒸気を外部へ排出する弁口と転倒時に動作して前記弁口を閉じる逆止弁と前記逆止弁を収容しかつ摺動させる弁座とを有する弁座室とを備え、前方向に傾斜し前記逆止弁が動作し前記弁口を閉じたとき、内圧が上昇しないように前記弁座室と外部に連通する蒸気通路との間に隙間を設ける構成とした。
【００１０】
これにより、傾斜時に逆止弁が動作した後には弁座室と外部との間に設けた隙間から圧力が抜けるため、内圧が上昇するのを防ぐことができる。
【００１１】
【発明の実施の形態】
請求項１記載の発明は、外郭と、前記外郭内に設けた水を収容する容器と、前記容器の上方開口部を覆う蓋体と、前記蓋体に設けた前記容器内の水が加熱された時に発生する蒸気を外部へ排出するための蒸気通路並びに蒸気排出口と、前記蓋体の内部に設けた発生した蒸気を前記蒸気通路へ排出する弁口と転倒時に動作して前記弁口を閉じる逆止弁と前記逆止弁を収容しかつ摺動させる弁座とを有する弁座室とを備え、前方向傾斜時に前記逆止弁が動作し前記弁口を閉じたとき、内圧が上昇しないように前記弁座室と前記蒸気通路との間に隙間を設ける構成とした。
【００１２】
これによって、前方傾斜時に逆止弁が動作した後に、弁座室と蒸気通路との間に設けた隙間から圧力が抜けるため、内圧上昇による漏水がなくなり、衛生上および安全上に優れたものにすることができる。
【００１３】
請求項２記載の発明は、特に、請求項１記載の構成において、弁口は前方向に転倒した時の水面より上方になる位置に設ける構成としたことにより、前方に転倒した時の水面より弁口が上方にあるため、転倒した時に蒸気通路から外部に漏水しにくくなる。
【００１４】
請求項３記載の発明は、特に、請求項１または２記載の構成において、隙間は弁口の中心線より少なくとも後方の前記弁口と逆止弁との間に設ける構成とした。この構成により、より確実に隙間を確保することができるようになり、内圧の上昇を抑えることができる。
【００１５】
請求項４記載の発明は、特に、請求項３記載の構成において、逆止弁が弁口のシール面に対して斜めに当接するように弁座を傾斜させて設ける構成とした。この構成によって、逆止弁のシール面と弁口のシール面とが後方下がりで斜めに当接するようになるので、前方向に傾斜した時に逆止弁が動作すると弁口の前方側に先当たりして、弁口の後方側に隙間ができているので、その隙間から圧力が抜けるため、内圧が上昇することはなく漏水する心配はなくなる。また、弁座の取り付け角度を従来に対して変更するだけであり、簡単な部品形状の変更によって容易に実施可能となる。
【００１６】
請求項５記載の発明は、特に、請求項３記載の構成において、弁口に逆止弁のシール面に対して傾斜したシール部を設ける構成とした。この構成により、逆止弁のシール面と弁口のシール面とが後方下がりで斜めに当接するようになるので、前方向に傾斜した時に逆止弁が動作すると弁口の前方側に先当たりして、弁口の後方側に隙間ができているので、その隙間から圧力が抜けるため、内圧が上昇することはなく、漏水する心配はなくなる。
【００１７】
請求項６記載の発明は、特に、請求項３記載の構成において、逆止弁に弁口のシール面に対して傾斜したシール部を設ける構成としたので、上述の場合と同様に隙間ができているので内圧の上昇を防ぐことができると共に、逆止弁のシール面の角度を従来に対して変更するだけであり、簡単な部品形状の変更によって容易に実施可能となる。
【００１８】
請求項７記載の発明は、特に、請求項３記載の構成において、弁口のシール面と逆止弁のシール面との交差角は０．５〜２．５°、好ましくは１〜２°とする構成としたので、確実に隙間を確保でき、内圧の上昇を防ぐと共に、液面の変動による漏水を防ぐことができる。
【００１９】
請求項８記載の発明は、特に、請求項３記載の構成において、少なくとも逆止弁のシール面または弁口のシール面のどちらか一方に弁座室と弁口とを連通する少なくとも１本の溝を設ける構成としたことにより、確実に隙間を確保でき、内圧の上昇を防ぐことができる。
【００２０】
請求項９記載の発明は、特に、請求項３記載の構成において、少なくとも逆止弁のシール面または弁口のシール面のどちらか一方に凸部を設ける構成としたことにより、確実に隙間を確保でき、内圧の上昇を防ぐことができる。
【００２１】
請求項１０記載の発明は、特に、請求項１または２記載の構成において、弁座室と蒸気通路との間に連通する細孔を設ける構成としたことにより、常に隙間が設けられているので、内圧の上昇を抑え、漏水を防ぐことができる。
【００２２】
請求項１１記載の発明は、特に、請求項１〜９のいずれか１項に記載の構成において、弁口と開口との間に水を貯えるプール部を設ける構成とした。この構成によって、傾斜時に逆止弁が動作した後に設けた弁口と逆止弁との間の隙間から万が一漏水しても、弁口と外部との間の蒸気通路の一部に設けたプール部に弁口から漏水した水を溜めることができ、一定時間以内は外部に漏水して周囲を濡らす心配はなくなり、さらに使い勝手が向上する。
【００２３】
【実施例】
以下、本発明の実施例について、図面を参照しながら説明する。
【００２４】
（実施例１）
図１は本発明の実施例１の電気湯沸かし器の要部拡大断面図であり、図２は同電気湯沸かし器の側面断面図、図３は同電気湯沸かし器の他の例の要部拡大断面図であり、図４は同電気湯沸かし器の他の例の要部拡大断面図である。
【００２５】
図２において、３１は外郭であり、３２は外郭３１内に設けた水を収容する容器、３３は容器３２の上方開口部を覆う蓋体であり、蓋体３３には本実施例に関わる弁座室３４と内部で発生した蒸気を排出する蒸気排出口３５を設けている。なお、弁座室は本実施例の効果を後述するようにより顕著にするために中心線ＯＯより後方に設けている。３６はポンプからなる出湯手段で、操作部（図示せず）を操作すると動作を開始し容器内の湯を水管３７を介して前方に設けた出湯口３８より出湯する。
【００２６】
また、３９は止水弁で器体を傾けたとき水路を遮断し容器内の湯が出湯口３８よりこぼれないようにしている。４０は電気湯沸かし器を移動するときに用いる把手である。なお、本実施例では出湯口３８のある位置を前方として記載している。以下本実施例の要部について説明する。
【００２７】
図１において、蓋体３３は、外周に容器３２のフランジ部３２ａをシールするパッキング４１が装着された内蓋４２と、パッキング４１との当接面に三角リブを設けてシールした中蓋４３と、外蓋４４とで構成している。また、蓋体３３の内部には容器３２内の水が加熱された時に発生する蒸気を外部へ排出するための蒸気通路４５および蒸気排出口３５と、弁座室３４とを設けている。この弁座室３４は発生した蒸気を蒸気通路４５に排出する弁口４６と、全方向、すなわち、どの方向に転倒しても動作して弁口４６を閉じる逆止弁４７と、逆止弁４７を収容しかつ摺動させる弁座４８とより構成している。弁口４６は前方向転倒時の水面に対して上方になるように容器３２中心線ＯＯより後方に設けている。これにより、傾斜時の漏水をより効果的に防止できる。逆止弁４７が弁口４６のシール面４６ａに対して後方下がりで斜めに当接するように弁座４８を傾斜させて設けている。すなわち、弁口４６の中心線ＡＡと弁座４８の中心線ＢＢとが一直線にならず、ある角度θ°を持って交差するようにしている。このため、弁口４６のシール面４６ａと弁座４８との当接面の後方、すなわち中心線ＯＯからはなれた位置に隙間が形成される。
【００２８】
これによって、特に、前方向に転倒した時の水面より弁口４６が上方になるように容器３２の中心より後方に設けているため、前方向に転倒した時に蒸気通路４５から外部に漏水して周囲を濡らす心配はなくなる。また、逆止弁４７が弁口４６のシール面４６ａに対して後方下がりで斜めに当接するように弁座４８を傾斜させて設けているので、機体を前方向に傾斜した時に逆止弁４７が動作すると弁口４６の前方側に先当たりして、弁口４６の後方側に隙間ができるので、その隙間から圧力が抜けるため、内圧が上昇することはなく、漏水して周囲を濡らす心配はなくなる。この構成は弁座４８の取り付け角度を従来に対して変更するだけであり、簡単な部品形状の変更によって容易に実施可能となる。
【００２９】
また、弁口４６と逆止弁４７とを傾斜させて当接する方法としては、図３に示すように、弁口４６を逆止弁４７のシール面４７ａに対してθ°傾斜させてシール部４６ａを設ける構成としてもよい。このとき、弁口４６の中心線ＡＡと弁座４８の中心線ＢＢとは一直線となる。この場合、弁口４６のシール面４６ａの角度を従来に対して変更するだけであり、簡単な部品形状の変更によって容易に実施可能となる。
【００３０】
また、図４に示すように、逆止弁４７を弁口４６のシール面４６ａに対してθ°傾斜させたシール部４７ａを設ける構成としてもよい。このとき、弁口４６の中心線ＡＡと弁座４８の中心線ＢＢとは一直線となる。この場合においても、逆止弁４７のシール面４７ａの角度を従来に対して変更するだけであり、簡単な部品形状の変更によって容易に実施可能となる。
【００３１】
上述のように、弁口４６と逆止弁４７とを当接するときの角度θ°は実用的には０．５〜２．５°、好ましくは１〜２°がよい。角度が０．５°より小さくなると、圧力の抜けが悪く内圧が上昇し漏水する危険性が高くなる。また２．５°より大きな角度になると、傾斜するときの液面の振動や傾斜しゆすったときの液面の変動により隙間を介して湯が漏出する恐れがあるからである。
【００３２】
この他、弁口４６と逆止弁４７との間に隙間を設ける方法としては、弁口４６のシール面４６ａまたは逆止弁４７のシール面４７ａの少なくともどちらか一方に溝を設ける構成としても良い。勿論、このとき溝が湯につからないようにするためシール面４６ａとシール面４７ａとの当接面のうち容器３２の中心線ＯＯから離れた位置に設けるようにする。
【００３３】
また、弁口４６のシール面４６ａまたは逆止弁４７のシール面４７ａの少なくともどちらか一方に凸部を設ける構成としても良い。勿論、このときも凸部の位置はシール面４６ａとシール面４７ａとの当接面のうち容器３２の中心線ＯＯから離れた位置に設けるようにする。
【００３４】
この他、隙間を設ける方法としては本実施例の主旨にかなうものであればどのような構成であってもよい。
【００３５】
以上述べたように、本実施例によれば、傾斜時に弁口と逆止弁との間に隙間が確保されるため、内圧が上昇せず、漏水が起こらないため出湯口が漏水に曝されたり、使用者が漏水に触れたりするのを無くすことができる。
【００３６】
（実施例２）
図５は本発明の実施例２における電気湯沸かし器の要部拡大断面図である。なお、本実施例の基本構成は実施例１と同じなので異なる点を中心に説明する。また、実施例１と同じ機能には同じ符号を付しその説明は省略する。
【００３７】
本実施例が実施例１と異なる点は、実施例１が弁口４６と逆止弁４７との間に隙間を設けたのに対し、本実施例では弁座室３４と蒸気通路４５との間に細孔４９による隙間を設けた点である。
【００３８】
通常の正常な使用状態では、発生した蒸気は弁口４６を経て蒸気通路４５を通り蒸気排出口３５より外部に排出される。このとき、蒸気は細孔４９の排気抵抗が弁口４６の排気抵抗より大きいため蒸気の大部分は弁口４６を通って排出される。そして、器体が前方に傾斜し弁口４６が逆止弁で完全に閉ざされたときは、発生した蒸気は細孔４９を通って外部に排出される。したがって、内圧はほとんど上昇しないので、器体を前方に傾斜しても実質的には漏水しない。もちろん、細孔は実施例１の場合と同様に、湯に浸からないようにするため弁座室３４の後方部に設ける。
【００３９】
以上の構成にすることにより、実施例１とほぼ同様の効果が得られる。
【００４０】
（実施例３）
図６は本発明の実施例３における電気湯沸かし器の要部拡大断面図である。なお、本実施例の基本構成は実施例１と同じなので異なる点を中心に説明する。また、実施例１と同じ機能には同じ符号を付しその説明は省略する。
【００４１】
本実施例と実施例１との相違点は、蒸気通路３５の一部に漏水を溜めるプール部５０を設けた点である。前方に傾斜時に逆止弁１０が動作した後に設けた弁口４６と逆止弁４７との間の隙間から万が一漏水しても、弁口４６と蒸気排出口３５との間の蒸気通路４５の一部に設けたプール部５０に弁口４６から漏水した水を溜めることができ、一定時間以内は外部に漏水する心配はさらに少なくなり、利便性が向上する。
【００４２】
【発明の効果】
以上のように、請求項１〜１１に記載の発明によれば、使用者が器体を前方に傾けても湯がほとんど漏水することがなく、衛生的で、かつ使い勝手のよいものにすることができる。
【図面の簡単な説明】
【図１】本発明の実施例１における電気湯沸かし器の要部拡大断面図
【図２】同電気湯沸かし器の側面断面図
【図３】同電気湯沸かし器の他の例の要部拡大断面図
【図４】同電気湯沸かし器の他の例の要部拡大斜視図
【図５】本発明の実施例２における電気湯沸かし器の要部拡大断面図
【図６】本発明の実施例３における電気湯沸かし器の要部拡大断面図
【図７】従来の電気湯沸かし器の要部拡大断面図
【図８】従来の他の電気湯沸かし器の要部拡大断面図
【符号の説明】
３１外郭
３２容器
３３蓋体
３４弁座室
３５蒸気排出口
４５蒸気通路
４６弁口
４６ａシール面
４７逆止弁
４７ａシール面
４８弁座
４９細孔
５０プール部[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a lid structure of an electric water heater.
[0002]
[Prior art]
Conventionally, as this type of electric water heater, there has been one as shown in FIG. FIG. 7 is an enlarged sectional view of a main part of the electric water heater. The lid 1 is composed of an outer lid 2, a lid cover 3 and a decorative frame 4, and a boss 5 provided on the outer lid 2 is attached to the lid cover 3. By attaching the mounting body 8 to the decorative frame 4 through the holes 6 and 7 provided respectively, the outer lid 2, the lid cover 3 and the decorative frame 4 are integrated, and the lid 1 is provided (for example, Patent Document 1). 1).
[0003]
Since the above-described configuration has a complicated structure and requires a lot of assembly steps, a configuration as shown in FIG. 8 has been considered. FIG. 8 is an enlarged sectional view of a main part of another conventional electric water heater. In the figure, the electric water heater includes an outer shell 11, a container 12 provided in the outer shell 11, having an opening with an open upper surface, and a lid 13 covering the opening of the container 12. Here, the lid 13 is sealed by providing a triangular rib (not shown) on the contact surface with the inner lid 15 on which the packing 14 for sealing the flange portion 12a of the container 12 is mounted. It is composed of a lid 16 and an outer lid 17.
[0004]
Further, a steam passage 18 for discharging steam generated when water in the container 12 is heated to the outside, a steam outlet 19 and a valve seat chamber 20 are provided inside the lid 13. Further, the valve seat chamber 20 is provided with a check valve 22 that operates to close the valve port 20 and shut off the steam flow when the electric water heater falls down in any direction, that is, when the electric water heater falls in any direction. And a valve seat 23 that accommodates and slides.
[0005]
[Patent Document 1]
JP-A-11-4763
[Problems to be solved by the invention]
In such a conventional configuration, the inner lid 15 and the inner lid 16 are provided with an interference in the assembly, and the flat part of the packing 14 mounted on the outer periphery of the inner lid 15 is pressed and sealed by a triangular rib provided on the inner lid 16. Therefore, the sealing performance between the packing 14 and the inner lid 16 is limited, and when the check valve 20 is operated to close the valve port 19 at the time of inclining, the internal pressure increases and the sealing between the packing 14 and the inner lid 16 is sealed. Water leaks from the part. The degree of this water leakage satisfies the water leakage amount at the time of a fall of 50 cc / 10 seconds used according to the standard of JISC-9213 thermos, but there was a problem that the surrounding area was wet.
[0007]
In particular, when the user comes into contact with the electric kettle, the user often faces the front surface with the tap hole. Therefore, the user often erroneously leans forward by holding down the upper part of the electric water heater, or leans forward by hand on both sides. Then, the water leaks as described above, and the leaked hot water moves forward according to the inclination, reaches the tap hole, and drops downward therefrom. It is not sanitary for the water leak to flow near the tap. There is also a safety problem that a user may touch hot water.
[0008]
An object of the present invention is to solve the above-mentioned problems, and an object of the present invention is to provide a sanitary and easy-to-use electric water heater in which hot water hardly leaks even when a user tilts a body forward.
[0009]
[Means for Solving the Problems]
In order to solve the above-mentioned problem, the present invention has a lid for covering an upper opening of a container for storing water, a valve port provided inside the lid for discharging generated steam to the outside, and operates when the tipper falls. A valve seat chamber having a check valve that closes the valve port and a valve seat that receives and slides the check valve, and tilts forward to operate the check valve and close the valve port. In such a case, a gap is provided between the valve seat chamber and a steam passage communicating with the outside so that the internal pressure does not rise.
[0010]
Thus, after the check valve operates during the inclination, the pressure is released from the gap provided between the valve seat chamber and the outside, so that the internal pressure can be prevented from rising.
[0011]
BEST MODE FOR CARRYING OUT THE INVENTION
According to the first aspect of the present invention, an outer shell, a container for storing water provided in the outer shell, a lid for covering an upper opening of the container, and water in the container provided for the lid are heated. A steam passage and a steam discharge port for discharging steam generated at the time of discharge to the outside, a valve port provided inside the lid for discharging generated steam to the steam path, and a valve port which operates at the time of falling to operate the valve port. A valve seat chamber having a close check valve and a valve seat for receiving and sliding the check valve, wherein when the check valve operates and closes the valve port when tilted forward, the internal pressure increases. A gap is provided between the valve seat chamber and the steam passage so as not to prevent the gap.
[0012]
As a result, the pressure is released from the gap provided between the valve seat chamber and the steam passage after the check valve operates at the time of forward tilt, so that water leakage due to an increase in the internal pressure is eliminated, which is excellent in hygiene and safety. can do.
[0013]
The invention according to claim 2 is particularly configured such that, in the configuration according to claim 1, the valve port is provided at a position above the water surface when the vehicle falls down in the forward direction, so that the valve port is located above the water surface when the vehicle falls down forward. Since the valve port is at the top, it is difficult for water to leak out of the steam passage to the outside when it falls down.
[0014]
According to a third aspect of the present invention, in the configuration of the first or second aspect, the gap is provided between the valve port and the check valve at least behind the center line of the valve port. With this configuration, it is possible to more reliably secure the gap, and it is possible to suppress an increase in the internal pressure.
[0015]
According to a fourth aspect of the present invention, in the configuration of the third aspect, the check valve is provided so as to be inclined so that the check valve abuts on the seal surface of the valve port. With this configuration, the sealing surface of the check valve and the sealing surface of the valve port come into contact with each other obliquely downward and downward, so that when the check valve operates when tilted forward, it comes into contact with the front side of the valve port first. Since a gap is formed behind the valve port, pressure is released from the gap, so that the internal pressure does not increase and there is no fear of water leakage. Further, the mounting angle of the valve seat is simply changed with respect to the conventional one, and it can be easily implemented by simply changing the component shape.
[0016]
The invention according to claim 5 is particularly configured such that, in the configuration according to claim 3, a seal portion that is inclined with respect to the seal surface of the check valve is provided at the valve port. With this configuration, the seal surface of the check valve and the seal surface of the valve port come into contact obliquely downward and downward, so that when the check valve operates when tilted forward, it comes into contact with the front side of the valve port first. Since a gap is formed on the rear side of the valve port, pressure is released from the gap, so that the internal pressure does not increase and there is no fear of water leakage.
[0017]
According to the sixth aspect of the present invention, in particular, in the configuration of the third aspect, the check valve is provided with a seal portion inclined with respect to the seal surface of the valve port. As a result, the internal pressure can be prevented from rising, and the angle of the seal surface of the check valve can be simply changed from that of the related art.
[0018]
According to a seventh aspect of the present invention, in the configuration of the third aspect, an intersection angle between the sealing surface of the valve port and the sealing surface of the check valve is 0.5 to 2.5 °, preferably 1 to 2 °. With this configuration, a gap can be reliably secured, an increase in internal pressure can be prevented, and water leakage due to fluctuations in the liquid level can be prevented.
[0019]
The invention according to claim 8 is, in particular, in the configuration according to claim 3, at least one of the valve seat chamber and the valve port communicating with at least one of the seal surface of the check valve and the seal surface of the valve port. With the configuration in which the groove is provided, a gap can be reliably secured, and an increase in internal pressure can be prevented.
[0020]
According to the ninth aspect of the present invention, in particular, in the configuration of the third aspect, the gap is reliably formed by providing a convex portion on at least one of the seal surface of the check valve and the seal surface of the valve port. It is possible to secure and prevent the internal pressure from rising.
[0021]
According to the tenth aspect of the present invention, in particular, in the configuration according to the first or second aspect, a gap is always provided by providing a configuration in which a pore communicating with the valve seat chamber and the steam passage is provided. In addition, it is possible to suppress an increase in internal pressure and prevent water leakage.
[0022]
According to an eleventh aspect of the present invention, in particular, in the configuration according to any one of the first to ninth aspects, a pool portion for storing water is provided between the valve port and the opening. According to this configuration, even if water should leak from the gap between the check port and the check valve provided after the check valve operates during tilting, the pool provided in a part of the steam passage between the check port and the outside Water leaked from the valve port can be stored in the portion, and there is no need to worry about leaking to the outside and getting wet around the device within a certain period of time, further improving usability.
[0023]
【Example】
Hereinafter, embodiments of the present invention will be described with reference to the drawings.
[0024]
(Example 1)
FIG. 1 is an enlarged sectional view of a main part of an electric water heater according to a first embodiment of the present invention, FIG. 2 is a side sectional view of the electric water heater, and FIG. 3 is an enlarged sectional view of a main part of another example of the electric water heater. FIG. 4 is an enlarged sectional view of a main part of another example of the electric water heater.
[0025]
In FIG. 2, reference numeral 31 denotes an outer shell, 32 denotes a container provided in the outer shell 31 for storing water, 33 denotes a lid that covers an upper opening of the container 32, and the lid 33 includes a valve according to the present embodiment. A seat chamber 34 and a steam outlet 35 for discharging steam generated inside are provided. In addition, the valve seat chamber is provided behind the center line OO in order to make the effect of this embodiment more prominent as described later. Reference numeral 36 denotes a tapping means comprising a pump. When an operation section (not shown) is operated, the operation is started, and the tap water in the container is supplied through a tap 38 provided in front through a water pipe 37.
[0026]
Reference numeral 39 denotes a water stop valve which shuts off the water channel when the body is tilted so that hot water in the container does not spill out from the tap 38. Reference numeral 40 denotes a handle used when the electric water heater is moved. In this embodiment, the position where the tap 38 is located is described as the front. Hereinafter, the main part of the present embodiment will be described.
[0027]
In FIG. 1, a lid 33 includes an inner lid 42 on which a packing 41 for sealing the flange portion 32 a of the container 32 is mounted on an outer periphery, and an inner lid 43 sealed by providing a triangular rib on a contact surface with the packing 41. , And an outer lid 44. Further, a steam passage 45 and a steam discharge port 35 for discharging steam generated when water in the container 32 is heated to the outside, and a valve seat chamber 34 are provided inside the lid 33. The valve seat chamber 34 has a valve port 46 for discharging generated steam to the steam passage 45, a check valve 47 that operates to close the valve port 46 in all directions, that is, in any direction, and a check valve. And a valve seat 48 that accommodates and slides the valve seat 47. The valve port 46 is provided rearward of the center line OO of the container 32 so as to be above the water surface when the vehicle falls over in the forward direction. Thereby, water leakage at the time of inclination can be prevented more effectively. The valve seat 48 is provided so as to be inclined so that the check valve 47 abuts on the sealing surface 46 a of the valve port 46 obliquely downward and rearward. That is, the center line AA of the valve port 46 and the center line BB of the valve seat 48 are not straight, but intersect at a certain angle θ °. Therefore, a gap is formed behind the contact surface between the sealing surface 46a of the valve port 46 and the valve seat 48, that is, at a position separated from the center line OO.
[0028]
In particular, since the valve port 46 is provided behind the center of the container 32 so that the valve port 46 is located above the water surface when the vehicle falls down in the forward direction, water leaks from the steam passage 45 to the outside when the vehicle falls down in the forward direction. No more worrying about getting wet. Also, since the check valve 47 is provided so as to be inclined so that the check valve 47 abuts on the sealing surface 46a of the valve port 46 obliquely downward and rearward, the check valve 47 is inclined when the body is tilted forward. When the valve operates, a gap is formed in front of the valve port 46 and behind the valve port 46, so that pressure is released from the gap, so that the internal pressure does not increase and there is a concern that water leaks and wets the surroundings. Is gone. This configuration merely changes the mounting angle of the valve seat 48 compared to the related art, and can be easily implemented by simply changing the shape of parts.
[0029]
As a method of inclining the valve port 46 and the check valve 47 in contact with each other, as shown in FIG. 46a may be provided. At this time, the center line AA of the valve port 46 and the center line BB of the valve seat 48 are in a straight line. In this case, the angle of the sealing surface 46a of the valve port 46 is simply changed from the conventional one, and it can be easily implemented by simply changing the shape of parts.
[0030]
Further, as shown in FIG. 4, a check valve 47 may be provided with a seal portion 47a in which the check portion 47 is inclined by θ ° with respect to the seal surface 46a of the valve port 46. At this time, the center line AA of the valve port 46 and the center line BB of the valve seat 48 are in a straight line. In this case as well, the angle of the seal surface 47a of the check valve 47 is simply changed from the conventional one, and it can be easily implemented by simply changing the shape of parts.
[0031]
As described above, the angle θ ° when the valve port 46 contacts the check valve 47 is practically 0.5 to 2.5 °, preferably 1 to 2 °. If the angle is smaller than 0.5 °, the pressure is not sufficiently released, and the internal pressure increases, and the risk of water leakage increases. On the other hand, if the angle is greater than 2.5 °, the molten metal may leak through the gap due to the vibration of the liquid surface when tilting or the fluctuation of the liquid surface when tilting.
[0032]
In addition, as a method of providing a gap between the valve port 46 and the check valve 47, a groove may be provided on at least one of the seal surface 46a of the valve port 46 and the seal surface 47a of the check valve 47. good. Of course, at this time, in order to prevent the groove from getting into the hot water, the groove is provided at a position apart from the center line OO of the container 32 in the contact surface between the sealing surface 46a and the sealing surface 47a.
[0033]
Further, a configuration may be employed in which a convex portion is provided on at least one of the seal surface 46a of the valve port 46 and the seal surface 47a of the check valve 47. Of course, also at this time, the position of the convex portion is provided at a position apart from the center line OO of the container 32 on the contact surface between the sealing surface 46a and the sealing surface 47a.
[0034]
In addition, any configuration may be used as a method of providing the gap as long as it meets the gist of the present embodiment.
[0035]
As described above, according to the present embodiment, since the gap is secured between the valve port and the check valve at the time of inclining, the internal pressure does not increase, and no water leakage occurs, so that the tap hole is exposed to water leakage. Or the user is prevented from touching the leak.
[0036]
(Example 2)
FIG. 5 is an enlarged sectional view of a main part of an electric water heater according to Embodiment 2 of the present invention. Note that the basic configuration of the present embodiment is the same as that of the first embodiment, and therefore the description will focus on the differences. The same functions as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
[0037]
This embodiment is different from the first embodiment in that a gap is provided between the valve port 46 and the check valve 47 in the first embodiment, whereas in the present embodiment, the gap between the valve seat chamber 34 and the steam passage 45 is provided. The point is that a gap is formed between the fine holes 49.
[0038]
In a normal normal use state, the generated steam is discharged to the outside through the steam outlet 45 through the steam passage 45 through the valve port 46. At this time, most of the steam is discharged through the valve port 46 because the exhaust resistance of the pores 49 is larger than the exhaust resistance of the valve port 46. When the body is inclined forward and the valve port 46 is completely closed by the check valve, the generated steam is discharged to the outside through the fine holes 49. Therefore, since the internal pressure hardly increases, even if the body is inclined forward, substantially no water leaks. Of course, as in the case of the first embodiment, the pores are provided in the rear portion of the valve seat chamber 34 so as not to be immersed in hot water.
[0039]
With the above configuration, substantially the same effects as in the first embodiment can be obtained.
[0040]
(Example 3)
FIG. 6 is an enlarged sectional view of a main part of an electric water heater according to Embodiment 3 of the present invention. Note that the basic configuration of the present embodiment is the same as that of the first embodiment, and therefore the description will focus on the differences. The same functions as those in the first embodiment are denoted by the same reference numerals, and the description thereof will be omitted.
[0041]
The difference between the present embodiment and the first embodiment is that a pool part 50 for storing water leakage is provided in a part of the steam passage 35. Even if water leaks from the gap between the valve port 46 and the check valve 47 provided after the check valve 10 is operated when tilted forward, the steam passage 45 between the valve port 46 and the steam discharge port 35 The water leaked from the valve port 46 can be stored in the pool part 50 provided in a part thereof, and the fear of leaking to the outside within a certain time is further reduced, and the convenience is improved.
[0042]
【The invention's effect】
As described above, according to the first to eleventh aspects of the present invention, hot water hardly leaks even when the user inclines the body forward, and is sanitary and easy to use. Can be.
[Brief description of the drawings]
FIG. 1 is an enlarged sectional view of a main part of an electric water heater in Embodiment 1 of the present invention. FIG. 2 is a side sectional view of the electric water heater. FIG. 3 is an enlarged cross-sectional view of a main part of another example of the electric water heater. FIG. 5 is an enlarged perspective view of a main part of another example of the electric water heater. FIG. 5 is an enlarged cross-sectional view of a main part of the electric water heater according to the second embodiment of the present invention. FIG. 7 is an enlarged cross-sectional view of a main part of a conventional electric water heater. FIG. 8 is an enlarged cross-sectional view of a main part of another conventional electric water heater.
31 shell 32 container 33 lid 34 valve seat chamber 35 steam outlet 45 steam passage 46 valve port 46a sealing surface 47 check valve 47a sealing surface 48 valve seat 49 pore 50 pool part

Claims

An outer shell, a container for storing water provided in the outer shell, a lid for covering an upper opening of the container, and steam generated when the water in the container provided on the lid is heated to the outside. A non-return valve and a non-return valve for discharging the generated steam to the vapor passage provided in the lid, a non-return valve for closing the non-return valve when the valve is turned over, A valve seat chamber having a valve seat that accommodates and slides the valve, wherein when the check valve operates and closes the valve port when tilted forward, the valve seat chamber prevents internal pressure from rising. An electric water heater having a configuration in which a gap is provided between the water heater and the steam passage.

The electric water heater according to claim 1, wherein the valve port is provided at a position above a water surface when the valve falls down forward.

The electric water heater according to claim 1 or 2, wherein the gap is provided between the valve port at least rearward of a center line of the valve port and the check valve.

The electric water heater according to claim 3, wherein the check valve is provided so as to be inclined so that the check valve abuts on the seal surface of the valve port at an angle.

4. The electric water heater according to claim 3, wherein the valve port is provided with a seal portion inclined with respect to the seal surface of the check valve.

2. The electric water heater according to claim 1, wherein the check valve is provided with a seal portion inclined with respect to the seal surface of the valve port.

The intersection angle between the sealing surface of the valve port and the sealing surface of the check valve is set to 0.5 to 2.5 °, preferably 1 to 2 °, according to any one of claims 4 to 6. Electric water heater.

4. The electric water heater according to claim 3, wherein at least one of the seal surface of the check valve and the seal surface of the valve port is provided with at least one groove communicating the valve seat chamber and the valve port.

4. The electric water heater according to claim 3, wherein a convex portion is provided on at least one of the seal surface of the check valve and the seal surface of the valve port.

The electric water heater according to claim 1 or 2, wherein a pore communicating with the valve seat chamber and the steam passage is provided.

The electric water heater according to any one of claims 1 to 10, wherein a pool portion for storing water is provided between the valve port and the opening.