JP3876831B2

JP3876831B2 - Electric water heater

Info

Publication number: JP3876831B2
Application number: JP2002367980A
Authority: JP
Inventors: 昇松田
Original assignee: Panasonic Corp; Matsushita Electric Industrial Co Ltd
Current assignee: Panasonic Corp; Panasonic Holdings Corp
Priority date: 2002-12-19
Filing date: 2002-12-19
Publication date: 2007-02-07
Anticipated expiration: 2022-12-19
Also published as: JP2004194968A

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、水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、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逆止弁が前記弁口のシール面に対して斜めに当接するように前記弁座を傾斜させて前記弁座室と前記蒸気通路との間に隙間を設け、前記隙間は前記弁口の中心線より少なくとも後方の前記弁口と前記逆止弁との間に設ける構成とした。
【００１０】
これにより、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。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。
【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逆止弁が前記弁口のシール面に対して斜めに当接するように前記弁座を傾斜させて前記弁座室と前記蒸気通路との間に隙間を設け、前記隙間は前記弁口の中心線より少なくとも後方の前記弁口と前記逆止弁との間に設ける構成とした。
【００１２】
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。
【００１３】
請求項２記載の発明は、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。
【００１４】
請求項３記載の発明は、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。
【００１５】
請求項４記載の発明は、特に、請求項１〜３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。
【００１６】
請求項５記載の発明は、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。
【００１７】
【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。
【００１８】
（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。
【００１９】
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。
【００２０】
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。
【００２１】
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。
【００２２】
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。
【００２３】
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。
【００２４】
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。
【００２５】
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。
【００２６】
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。
【００２７】
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。
【００２８】
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。
【００２９】
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。
【００３０】
（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。
【００３１】
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。
【００３２】
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。
【００３３】
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。
【００３４】
（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。
【００３５】
本実施例と実施例１との相違点は、蒸気通路４５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４７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。
【００３６】
【発明の効果】
以上のように、請求項１〜５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]
BACKGROUND 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 is one as shown in FIG. FIG. 7 is an enlarged cross-sectional view of a main part of the electric water heater. The lid body 1 includes an outer lid 2, a lid cover 3, and a decorative frame 4. A lid cover 3 is attached to a boss 5 provided on the outer lid 2. The outer cover 2, the cover cover 3, and the decorative frame 4 are integrated with each other by attaching the mounting body 8 through the holes 6 and 7 provided in the decorative frame 4, respectively, and the cover body 1 is provided (for example, Patent Documents). 1).
[0003]
The structure described above is complicated in structure and requires much man-hours for assembly, so the structure 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 is composed of an outer shell 11, a container 12 having an opening with an upper surface disposed in the outer shell 11, 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 between the inner lid 15 having a packing 14 that seals the flange portion 12a of the container 12 on the outer periphery and the packing 14. A lid 16 and an outer lid 17 are included.
[0004]
Further, a steam passage 18 for discharging steam generated when the water in the container 12 is heated to the outside, a steam discharge port 19 and a valve seat chamber 20 are provided inside the lid 13. Furthermore, the valve seat chamber 20 operates in any direction, that is, when the electric water heater falls, in any direction, and closes the valve port 20 to shut off the flow of water, and the check valve 22. And a valve seat 23 for receiving and sliding the valve.
[0005]
[Patent Document 1]
Japanese Patent Laid-Open No. 11-4863
[Problems to be solved by the invention]
In such a conventional configuration, an allowance is provided for assembling the inner lid 15 and the inner lid 16, and the flat portion of the packing 14 attached to the outer periphery of the inner lid 15 is pressure-sealed with a triangular rib provided on the inner lid 16. Therefore, there is a limit to the sealing performance between the packing 14 and the inner lid 16, and when the check valve 20 operates during the inclination and the valve port 19 is blocked, the internal pressure rises and the packing 14 and the inner lid 16 are sealed. Water leaks from the part. Although the degree of this water leakage satisfied the amount of water leakage 50cc / 10 seconds at the time of falling used in accordance with the standard of JISC-9213 thermos bottle, there was a problem that the surroundings were wetted.
[0007]
In particular, when the user is in contact with an electric water heater, the user often faces the front surface with the hot water outlet. Therefore, the user often mistakenly holds the upper part of the electric water heater and tilts it forward, or tilts it forward with both sides sandwiched by hand. Then, water leaks as described above, and the hot water that has leaked moves forward according to the inclination, reaches the hot water outlet, and drops downward from there. It is undesirable for hygiene that the water leaks near the outlet. There is also a safety problem that the user may touch hot water.
[0008]
SUMMARY OF THE INVENTION An object of the present invention is to provide an electric water heater that is hygienic and easy to use, with little water leaking even when a user tilts the body forward.
[0009]
[Means for Solving the Problems]
In order to solve the above problems, the present invention includes outer and a container for containing the water provided within said shell, a lid for covering an upper opening of said container, said container provided on the lid a steam passage and a steam discharge port for discharging the steam to the outside occurs when the water is heated, operating the steam generated provided inside of the lid at the time of fall and valve port to discharge into the steam passage A valve seat chamber having a check valve that closes the valve port and a valve seat that houses and slides the check valve, and when the check valve operates and closes the valve port when tilting forward , set the gap between the steam passage and is tilted the valve seat chamber the valve seat so that the inside pressure is not so the check valve increases abuts obliquely against the sealing surface of the valve port , the gap is provided between said valve port of at least behind the center line of the valve port said check valve It was constructed.
[0010]
As a result, the sealing surface of the check valve and the sealing surface of the valve port come into contact with each other in a downward-downward direction, so that when the check valve operates when tilted forward, it strikes the front side of the valve port. Since a gap is formed on the rear side of the valve opening, the pressure is released from the gap , so that the internal pressure does not increase and there is no fear of water leakage. Moreover, it is only possible to change the mounting angle of the valve seat with respect to the conventional one, and it can be easily implemented by simply changing the part shape.
[0011]
DETAILED DESCRIPTION OF THE INVENTION
According to the first aspect of the present invention, the outer shell, a container for containing water provided in the outer shell, a lid for covering the upper opening of the container, and water in the container provided in the lid are heated. A steam passage and a steam outlet for discharging the steam generated when the steam is generated to the outside, a valve opening for discharging the steam generated inside the lid to the steam passage, A valve seat chamber having a check valve that closes and a valve seat that houses and slides the check valve, and when the check valve operates and closes the valve port when tilting in the forward direction, the internal pressure increases. only set a gap between the lest the check valve is the valve seat is inclined to abut obliquely to the sealing surface of the valve port and the valve seat chamber and the steam path, the gap It was set as the structure provided between the said valve opening and the said non-return valve at least back from the centerline of the said valve opening .
[0012]
With this configuration, the check valve sealing surface and the valve mouth sealing surface come into contact with each other at an angle downward, so that when the check valve operates when tilted forward, the check valve contacts the front side of the valve mouth first. Since a gap is formed on the rear side of the valve opening, the pressure is released from the gap, so that the internal pressure does not increase and there is no fear of water leakage. Moreover, it is only possible to change the mounting angle of the valve seat with respect to the conventional one, and it can be easily implemented by simply changing the part shape.
[0013]
According to the second aspect of the present invention, the valve port is provided with a seal portion that is inclined with respect to the seal surface of the check valve . With this configuration, the check valve sealing surface and the valve mouth sealing surface come into contact with each other in a downward-downward direction, so that when the check valve operates when tilted forward, the check valve contacts the front side of the valve mouth first. Since a gap is formed on the rear side of the valve opening, the pressure is released from the gap, so that the internal pressure does not increase and there is no fear of water leakage.
[0014]
Since the invention according to claim 3 has a structure in which the check valve is provided with a seal portion that is inclined with respect to the seal surface of the valve port, a gap is formed in the same manner as described above, so that an increase in internal pressure can be prevented. In addition, the angle of the sealing surface of the check valve can be simply changed with respect to the conventional one, and can be easily implemented by simply changing the shape of the parts.
[0015]
In the invention according to claim 4 , in particular, in the configuration according to claims 1 to 3, the crossing angle between the seal surface of the valve port and the seal surface of the check valve is 0.5 to 2.5 °, preferably 1 to Since it was set as 2 degrees, a clearance gap can be ensured reliably, an increase in internal pressure can be prevented, and water leakage due to fluctuations in the liquid level can be prevented.
[0016]
According to a fifth aspect of the invention, by the both a configuration in which the protrusion on either the check valve sealing surface or valve port sealing surface of the small, can be reliably ensured gap, to prevent the increase in internal pressure Can do.
[0017]
【Example】
Embodiments of the present invention will be described below with reference to the drawings.
[0018]
Example 1
1 is an enlarged cross-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 cross-sectional view of the electric water heater, and FIG. 3 is an enlarged cross-sectional view of a main part of another example of the electric water heater. FIG. 4 is an enlarged cross-sectional view of a main part of another example of the electric water heater.
[0019]
In FIG. 2, 31 is an outer shell, 32 is a container for storing water provided in the outer shell 31, 33 is a lid that covers the upper opening of the container 32, and the lid 33 has a valve related to this embodiment. The seat chamber 34 and a steam outlet 35 for discharging steam generated inside are provided. The valve seat chamber is provided behind the center line OO in order to make the effects of this embodiment more prominent as will be described later. 36 is a hot water discharge means comprising a pump. When an operation unit (not shown) is operated, the operation starts, and hot water in the container is discharged through a water pipe 37 from a hot water outlet 38 provided in front.
[0020]
In addition, 39 is a water stop valve that shuts off the water channel and prevents hot water in the container from spilling from the outlet 38. Reference numeral 40 denotes a handle used when the electric water heater is moved. In the present embodiment, the position where the outlet 38 is located is described as the front. The main part of the present embodiment will be described below.
[0021]
In FIG. 1, a lid 33 includes an inner lid 42 having a packing 41 that seals the flange portion 32 a of the container 32 on the outer periphery, and an inner lid 43 that is sealed by providing a triangular rib on a contact surface with the packing 41. And the outer lid 44. The lid 33 is provided with a steam passage 45 and a steam outlet 35 for discharging steam generated when the water in the container 32 is heated to the outside, and a valve seat chamber 34. 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 in any direction, that is, in any direction, and closes the valve port 46, and a check valve The valve seat 48 which accommodates and slides 47 is comprised. The valve port 46 is provided behind the center line OO of the container 32 so as to be above the water surface at the time of forward falling. Thereby, the water leakage at the time of inclination can be prevented more effectively. The valve seat 48 is inclined and provided so that the check valve 47 comes into contact with the seal surface 46a of the valve port 46 obliquely in a backward direction. That is, the center line AA of the valve port 46 and the center line BB of the valve seat 48 are not in a straight line but intersect with each other with a certain angle θ °. Therefore, a gap is formed behind the contact surface between the seal surface 46a of the valve port 46 and the valve seat 48, that is, at a position away from the center line OO.
[0022]
As a result, 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 water falls forward, so that when the water falls forward, water leaks from the steam passage 45 to the outside. There is no need to worry about getting wet. Further, since the valve seat 48 is inclined so that the check valve 47 comes in contact with the seal surface 46a of the valve port 46 in a backward downward direction, the check valve 47 is inclined when the machine body is inclined forward. When the is operated, a gap is formed on the front side of the valve port 46 and a rear side of the valve port 46 is formed, so that the 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. Will disappear. In this configuration, only the mounting angle of the valve seat 48 is changed from the conventional one, and it can be easily implemented by simply changing the shape of the parts.
[0023]
Further, as a method of inclining and abutting the valve port 46 and the check valve 47, as shown in FIG. 3, the valve port 46 is inclined by θ ° with respect to the seal surface 47a of the check valve 47, and the seal portion 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, it is only necessary to change the angle of the sealing surface 46a of the valve port 46 with respect to the conventional one, and it can be easily implemented by simply changing the shape of the parts.
[0024]
In addition, as shown in FIG. 4, a configuration may be provided in which the check valve 47 is provided with a check portion 47 a that is inclined by θ ° with respect to the seal surface 46 a 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. Even in this case, only the angle of the sealing surface 47a of the check valve 47 is changed from that of the conventional one, which can be easily implemented by simply changing the shape of the parts.
[0025]
As described above, the angle θ ° when the valve port 46 and the check valve 47 abut is practically 0.5 to 2.5 °, preferably 1 to 2 °. When the angle is smaller than 0.5 °, the pressure is not easily released and the internal pressure rises to increase the risk of water leakage. Further, when the angle is larger than 2.5 °, the hot water may leak through the gap due to the vibration of the liquid level when it is tilted or the fluctuation of the liquid level when it is tilted.
[0026]
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 or the seal surface 47a of the check valve 47. good. Of course, at this time, the groove is provided at a position away from the center line OO of the container 32 on the contact surface between the seal surface 46a and the seal surface 47a so that the groove does not touch the hot water.
[0027]
Moreover, it is good also as a structure which provides a convex part in at least any one of the sealing surface 46a of the valve port 46, or the sealing surface 47a of the non-return valve 47. FIG. Of course, also at this time, the position of the convex portion is provided at a position away from the center line OO of the container 32 in the contact surface between the seal surface 46a and the seal surface 47a.
[0028]
In addition, any configuration may be used as a method of providing a gap as long as it meets the gist of the present embodiment.
[0029]
As described above, according to the present embodiment, a gap is secured between the valve port and the check valve at the time of tilting, so that the internal pressure does not increase and water leakage does not occur. Or touching the leaked water by the user.
[0030]
(Example 2)
FIG. 5 is an enlarged cross-sectional view of a main part of an electric water heater in Embodiment 2 of the present invention. Since the basic configuration of the present embodiment is the same as that of the first embodiment, the differences will be mainly described. The same functions as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0031]
The difference between the first embodiment and the first embodiment is that a gap is provided between the valve port 46 and the check valve 47 in the first embodiment, whereas the valve seat chamber 34 and the steam passage 45 are provided in the present embodiment. This is the point where a gap by the pore 49 is provided between them.
[0032]
In a normal normal use state, the generated steam passes through the valve port 46, passes through the steam passage 45, and is discharged to the outside from the steam discharge port 35. At this time, since the exhaust resistance of the pore 49 is larger than the exhaust resistance of the valve port 46, most of the steam is discharged through the valve port 46. When the vessel body is tilted forward and the valve port 46 is completely closed by the check valve, the generated steam is discharged to the outside through the pore 49. Therefore, since the internal pressure hardly increases, even if the body is tilted forward, water does not leak substantially. Of course, the pores are provided in the rear part of the valve seat chamber 34 so as not to be immersed in hot water as in the case of the first embodiment.
[0033]
With the above configuration, substantially the same effect as in the first embodiment can be obtained.
[0034]
(Example 3)
FIG. 6 is an enlarged cross-sectional view of a main part of an electric water heater according to Embodiment 3 of the present invention. Since the basic configuration of the present embodiment is the same as that of the first embodiment, the differences will be mainly described. The same functions as those in the first embodiment are denoted by the same reference numerals, and the description thereof is omitted.
[0035]
The difference between the present embodiment and the first embodiment is that a pool portion 50 for collecting water leakage is provided in a part of the steam passage 45. Even if water leaks from the gap between the valve port 46 and the check valve 47 provided after the check valve 47 operates when tilting forward, the steam passage 45 between the valve port 46 and the steam discharge port 35 is not provided. The water leaked from the valve port 46 can be stored in the pool part 50 provided in a part, and there is less fear of leaking to the outside within a certain time, and convenience is improved.
[0036]
【The invention's effect】
As described above, according to the first to fifth aspects of the present invention, even when the user tilts the body forward, the hot water hardly leaks, and is hygienic and easy to use. Can do.
[Brief description of the drawings]
1 is an enlarged cross-sectional view of the main part of the electric water heater in Embodiment 1 of the present invention. FIG. 2 is a side cross-sectional view of the electric water heater. FIG. 3 is an enlarged cross-sectional view of the main part of another example of the electric water heater. ] Main part enlarged perspective view of another example of the electric water heater [FIG. 5] Main part enlarged sectional view of the electric water heater in Example 2 of the present invention [FIG. 6] Main part enlarged of the electric water heater in Example 3 of the present invention Sectional view [Fig. 7] An enlarged sectional view of the main part of a conventional electric water heater [Fig. 8] An enlarged sectional view of an essential part of another conventional electric water heater [Explanation of symbols]
31 outer 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 covering the upper opening of the container, and steam generated when the water in the container provided in the lid is heated to the outside A steam passage and a steam outlet for discharging, a valve port for discharging the generated steam provided in the lid body to the steam passage, a check valve that operates at the time of falling and closes the valve port, and the check and a valve seat chamber and a valve seat to receive and slide valve, when the check valve is closed the valve port operating at forward inclination, the check valve so that the inside pressure does not increase setting a gap only between the steam passage and is tilted the valve seat chamber the valve seat so as to abut obliquely to the sealing surface of the valve port, the gap is at least the center line of the valve port An electric water heater provided between the rear valve port and the check valve .

An outer shell, a container for storing water provided in the outer shell, a lid covering the upper opening of the container, and steam generated when the water in the container provided in the lid is heated to the outside A steam passage and a steam outlet for discharging, a valve port for discharging the generated steam provided in the lid body to the steam passage, a check valve that operates at the time of falling and closes the valve port, and the check and a valve seat chamber and a valve seat to receive and slide valve, the front when the when the direction inclined check valve closes the valve port operating, the valve port so that the inside pressure does not rise A seal portion that is inclined with respect to the seal surface of the check valve is provided to provide a gap between the valve seat chamber and the steam passage, and the gap is at least behind the center line of the valve port and the valve port. Electric water heater provided between the check valve .

An outer shell, a container for storing water provided in the outer shell, a lid covering the upper opening of the container, and steam generated when the water in the container provided in the lid is heated to the outside A steam passage and a steam outlet for discharging, a valve port for discharging the generated steam provided in the lid body to the steam passage, a check valve that operates at the time of falling and closes the valve port, and the check A valve seat chamber having a valve seat that houses and slides the valve, and the check valve operates to prevent the internal pressure from increasing when the check valve operates and closes the valve port when tilting forward. provided a seal portion which is inclined with respect to the sealing surface of the valve port a gap is provided between the steam passage and the valve seat chamber, the gap is the said valve port of at least behind the center line of the valve port Electric water heater provided between the check valve .

Crossing angle 0.5 to 2.5 ° between the sealing surface and the sealing surface of the check valve of the valve port, according to preferably any one of claims 1 to 3 is configured to be a 1 to 2 ° Electric water heater.

An outer shell, a container for storing water provided in the outer shell, a lid covering the upper opening of the container, and steam generated when the water in the container provided in the lid is heated to the outside A steam passage and a steam outlet for discharging, a valve port for discharging the generated steam provided in the lid body to the steam passage, a check valve that operates at the time of falling and closes the valve port, and the check and a valve seat chamber and a valve seat to receive and slide valve, when the check valve is closed the valve port operating at forward inclination, at least the check valve so that the inside pressure does not rise sealing surface or a convex portion is provided on either the sealing surface of the valve port a gap is provided between the steam passage and the valve seat chamber, the gap is at least behind the center line of the valve port An electric water heater provided between a valve port and the check valve .