JP4068761B2

JP4068761B2 - Hot water automatic mixing valve

Info

Publication number: JP4068761B2
Application number: JP14611499A
Authority: JP
Inventors: 栄治関; 功根岸
Original assignee: Nippon Thermostat Co Ltd
Current assignee: Nippon Thermostat Co Ltd
Priority date: 1999-05-26
Filing date: 1999-05-26
Publication date: 2008-03-26
Anticipated expiration: 2019-05-26
Also published as: JP2000337535A

Description

【０００１】
【発明が属する技術分野】
本発明は、供給される湯と水とを所望の割合に混合して、所望の温度の混合水として取り出す湯水混合弁のうちで、供給される湯と水の量の調節を、混合水の温度を感知する温度センサの作動により自動的に行う湯水自動混合弁についての改良に関する。
【０００２】
【従来の技術】
従前の湯水自動混合弁Ａは、通常、図１に示している如く、それの弁箱たるボディ１には、それの内部に弁室１０を形成し、そのボディ１の外面側の側面に、給湯配管に接続する湯用の接続口１１と、給水配管に接続する水用の接続口１２とを設けて、それの湯用の接続口１１を弁室１０の下端側に湯入口１３により接続連通し、水用の接続口１２を弁室１０の上端側に水入口１４により連通し、ボディ１の下面側には、弁室１０の底面側に形成した混合水出口１５と接続連通する混合水取出用の接続口１６をそれの内腔に混合室１７を具備する形態として形成し、上面側には、前述の弁室１０内に組込む弁機構ａを装入するための取付口１８を形成する。
【０００３】
この、弁機構ａは、上縁側に水弁２０を形成し下縁側に湯弁２１を形成した筒状弁状の混合弁２と、その混合弁２の中心ボス部２２にガイド部３０を嵌挿して混合弁２に対し一体的に組付けるサーモエレメント３とからなり、それらの組付けを、混合弁２の中心ボス部２２とそれに嵌挿したサーモエレメント３のガイド部３０とを、ガイド部３０に嵌挿しておく支持金具４０とバネ性を有するワッシャー４１とガイド部３０に嵌着するＥ型止め輪４２とからなる部品４により、混合弁２の中心ボス部２２がガイド部３０の基端側に形成してある拡径段部３３とＥ型止め輪４２との間に挟持されて一体的に連結する状態とすることで行っている。
【０００４】
このように組立てられる弁機構ａを、前述のボディ１の上面側の取付口１８から弁室１０内に落とし込んで、サーモエレメント３の感温部３２が、混合水取出用の接続口１６の内腔に形成した混合室１７内に位置し、ガイド部３０から突出するロッド３１が取付口１８から上方に突き出る状態となるように装入し、そのサーモエレメント３を接続口１６内に設けるバイアスバネ５により押し上げるよう付勢しておく。
【０００５】
そして、ボディ１の上面側の取付口１８には、前述の弁機構ａのサーモエレメント３のガイド部３０を水密に保持せしめて摺動自在に嵌合させる調整ネジ蓋６０を螺合して組付け、これに、操作ハンドル６１の回動操作により上下に変位する調整ネジ筒６２と、それの内腔に上下可動に設けて逃しバネ６３により下降側に付勢した支点金具６４とを組込んで、その支点金具６４によりサーモエレメント３のロッド３１の突出端を支承させる。
【０００６】
そして、調整ネジ蓋６０の下面に混合弁２の水弁２０と対向する水側弁座２０ａを形成し、弁室１０の底部の混合水出口１５のまわりに湯弁２１と対向する湯側弁座２１ａを形成して、これにより、混合室１７内の混合水の温度変化によりサーモエレメント３のロッド３１が出入りする作動で、混合弁３が自動的に動いて湯弁２１および水弁２０の開度を変動させて、取り出す混合水の温度を設定温度に保持するように構成してある。
【０００７】
図２は、別の形態の湯水自動混合弁Ａの断面図である。
【０００８】
この湯水自動混合弁Ａは、弁機構ａの、混合弁２とサーモエレメント３との連繋状態を変えた例であり、その余の基本的な構成については前述の図１にある形態の湯水自動混合弁と変わりがないものである。そして、それの弁機構ａは、サーモエレメント３のガイド部３０を、ボディ１内に装設した筒状の規制部材４３に摺動自在に嵌挿して、軸線方向に正しく沿って上下に動くよう規制し、この規制部材４３より上方に突出するガイド部３０の胴部に、混合弁２の中心ボス部２２を嵌挿し、ガイド部３０の胴部周面に嵌着するＥ型止め輪４２によりその中心ボス部２２のガイド部３０に対する上方への動きを規制しておいて、混合弁２を逃しバネを兼ねるバイアスバネ５によりそれの中心ボス部２２がＥ型止め輪４２に突き当たるまで押し上げるように付勢して、これにより、混合弁２とサーモエレメント３とを一体的に組付けている例である。
【０００９】
【発明が解決しようとする課題】
上述の従前の湯水自動混合弁Ａは、第１の例のものにあっては、混合弁２とサーモエレメント３のガイド部３０とが、支持金具４０とワッシャー４１とＥ型止め輪４２との三つの部品で一体的に連結していることで、それら部品の組付時の曲がりにより、混合弁２の湯弁２１と湯側弁座２１ａとの平行度および水弁２０と水側弁座２０ａとの平行度が出しにくく、組付け不良の製品が多く出るようになることと、平行度を正しく出した状態に部品を組付けることがむずかしいことから、設定温度を低く設定したときの湯弁２１によるシール性および設定温度を高く設定したときの水弁２０によるシール性が悪く、水を必要とする場合に設定温度より遙かに高い高温水が出る危険があり、また、湯のみを必要とする場合に、高温水が出るまでに時間がかかる問題がある。
【００１０】
また、図２にあるもう一つの形態のものは、バイアスバネ５を混合弁２とボディ１との間に設けて逃しバネを兼ねるようにした例のものであるが、このものは、サーモエレメント３を押し上げる力がないので、混合弁２の水弁２０が水側弁座２０ａに当たるとそれ以上サーモエレメント３を押し上げることができず、そのため、サーモエレメント３と混合弁２とが常に一体的に連結した状態に保持されることで、混合弁２の弁座２０ａ・２１ａに対する平行度がサーモエレメント３のガイド部３０に対する組付状態に規制されることになって、前述の従来例のもののようにシール性が悪く、また、バイアスバネ５がサーモエレメント３の外側に位置することで、小型化しにくいことと、水および湯がバイアスバネ５の間を通過することで混合精度が悪い問題がある。
【００１１】
本発明は従来手段に生じている上述の問題を解消せしめるためになされたものであって、混合弁とサーモエレメントとの連繋を、サーモエレメントに対し自由度をもって混合弁が連繋する状態として、混合弁の湯弁または水弁が湯側弁座または水側弁座に衝合したときに、それにより混合弁が自動的に動いて、湯弁および水弁が湯側弁座および水側弁座に正しく平行する状態に修正されていくようにして、シール性を良好にする新たな手段を提供することを目的とする。
【００１２】
【課題を解決するための手段】
そして、本発明においては上述の目的を達成するための手段として、内腔に弁室を設け、外面側に給湯配管に接続する給湯用の接続口と給水配管に接続する給水用の接続口と混合水取出用の接続口とを設けたボディ内に、一端縁に水弁を形成し他端縁に湯弁を形成した筒状弁状の混合弁と感温部の感温作動によりガイド部に嵌挿せるロッドが出入りするサーモエレメントとを組合わせて連繋した弁機構ａを装入する湯水自動混合弁において、弁機構の混合弁の中心ボス部を、サーモエレメントのガイド部に緩く嵌挿して、混合弁とサーモエレメントとの間に設けるバネｂにより、混合弁をサーモエレメントに固定状態に設ける衝合部材ｃに対し押し付けて、混合弁をサーモエレメントに対し自由度を保持せしめた状態として連繋せしめたことを特徴とする湯水自動混合弁を提起し、また、さらに、内腔に弁室を設け、外面側に給湯配管に接続する給湯用の接続口と給水配管に接続する給水用の接続口と混合水取出用の接続口とを設けたボディ内に、一端縁に水弁を形成し他端縁に湯弁を形成した筒状弁状の混合弁と感温部の感温作動によりガイド部に嵌挿せるロッドが出入りするサーモエレメントとを組合わせて連繋した弁機構ａを装入する湯水自動混合弁において、弁機構ａの混合弁の中心ボス部を、サーモエレメントのガイド部に緩く嵌挿し、ガイド部の先端側と混合弁の上面側との間に設けるバネｂにより、混合弁をガイド部の基端側に向け付勢して、その混合弁の下面側をサーモエレメントに固定状態に設けた衝合部材に押し付け、混合弁をサーモエレメントに対し自由度を保持せしめた状態として連繋せしめたことを特徴とする湯水自動混合弁を提起するものである。
【００１３】
【発明の実施の形態】
本発明手段は、内部に弁機構を収蔵する弁室を具備せしめた弁箱の外面側に、前記弁室に対し湯入口を介し連通する給湯用の接続口と、前記弁室に対し水入口を介し連通する給水用の接続口と、前記弁室の混合水出口と連通する混合水取出用の接続口と、弁室内に弁機構を組付けるためとその弁機構を設定する設定温度を調節する温度調節機構を取付けるための取入口とを装設すること、そして、それの弁室内に装入する弁機構を、上縁側に水弁を形成し下縁側に湯弁を形成した筒状の混合弁と温度変化に応じてロッドが出入作動するサーモエレメントとを組合わせて、自動的に混合弁が動いて湯弁および水弁の開度を変更させる弁機構とし、また、温度調節機構は、ハンドルの操作または工具による操作により、ねじ筒またはねじ杆を回して弁機構のサーモエレメントのロッドの突出端部を支承する支点金具の位置を、ロッドの出入方向に変更変位させる構造のものとすることについては、従来手段のものと同様に構成してよい。
【００１４】
しかして、弁機構を構成する混合弁とサーモエレメントとの連繋は、混合弁の中心ボス部を、サーモエレメントのガイド部に対して、軸方向の摺動自在で、かつ、所定の角度範囲で揺動自在に嵌挿し、その混合弁を、サーモエレメントのガイド部に固定して設ける衝合部材に、その混合弁とサーモエレメントとの間に介装するバネにより押し付けて固定状態に保持せしめることで行うようにする。
【００１５】
この場合、混合弁とサーモエレメントとの間に介装するバネは、混合弁を押し上げる方向に設けて、その混合弁をサーモエレメントに固定して設ける衝合部材に押し付けて、サーモエレメントに対しその状態位置に保定せしめるようにしてよく、また、逆に混合弁を押し下げる方向に設けて、混合弁をサーモエレメントのガイド部の基端側に設けられている拡径段部を衝合部材に利用してそれに押し付けるか、またはサーモエレメントに別に固定して設けておく衝合部材に押し付けて、混合弁をサーモエレメントに対しその状態位置に保定せしめるようにしてもよい。
【００１６】
そして、これにより、サーモエレメントが感温作動により、弁箱のボディに設ける湯側弁座および水側弁座に対して動いて、それにより、該サーモエレメントに保持されている混合弁が一緒に動き、それの湯弁または水弁が対向する湯側または水側の弁座に衝合したときに、混合弁の衝合部材に対する圧接が解放されて、混合弁の自由度が確保され、その自由度により混合弁はそれの湯弁または水弁と対向する弁座とが平行する状態に動いて、その状態でバネにより弁座に圧接してシール性を良好に保持するようになる。
【００１７】
このとき、混合弁と衝合部材との衝合面を、球面状に形成しておくことで、混合弁の湯弁および水弁の弁座に対する平行度を出す作動が一層適確に行われるようになる。
【００１８】
【実施例】
次に実施例を図面に従い詳述する。なお、図面符号は、従前手段のものと同効の構成部材については同一の符号を付すものとする。
【００１９】
図３は、本発明による自動混合弁の第１の実施例の縦断側面図で、同図において、１は弁箱のボディで、軸線方向を上下方向とした筒状に形成してあり、内腔には弁室１０が形設してある。
【００２０】
１１はボディ１の一側面に設けた給湯配管に対して接続する湯用の接続口で、湯入口１３により前記弁室１０の下端側に連通している。
【００２１】
１２はボディ１の他側に設けた給水配管に対して接続する水用の接続口で、水入口１４を介し前記弁室１０の上端側に連通している。
【００２２】
１６は混合水の取出用の接続口で、弁室１０の底部に設けた混合水出口１５と連通させて、ボディ１の底面側に形設してあり、それの内腔は混合室１７に形成してある。
【００２３】
ａは前記弁室１０内に組込む弁機構で、上縁側に水弁２０を設け下縁側に湯弁２１を設けた筒状の混合弁２と、軸筒状のガイド部３０に嵌挿したロッド３１がワックス類を封入した感温部３２の感温作動により出入作動するサーモエレメント３とを連繋して組合わせた通常のものであり、それの混合弁２が弁室１０内に位置し、サーモエレメント３の感温部３２が混合室１７内に位置する状態としてボディ１内に組込まれ、サーモエレメント３には、混合室１７に設けたバイアスバネ５が押し上げる方向に作用させてある。
【００２４】
この弁機構ａにおける混合弁２とサーモエレメント３との連繋は、混合弁２の中心ボス部２２を、サーモエレメント３のガイド部３０の外周に緩く嵌挿し、かつ、その中心ボス部２２を、予めガイド部３０に嵌装しておくバネｂによりロッド３１が突出するガイド部３０の先端側に向け押し上げるように付勢しておく。
【００２５】
そして、その中心ボス部２２から上方に突出するガイド部３０の先端側に、衝合部材ｃを嵌装してＥ型止め輪４２によりガイド部３０の先端側への動きを規制しておいて、前述のバネｂによる押し上げにより混合弁２の中心ボス部２２の上面側を、この衝合部材ｃの下面側に突き当てて圧接させ、ガイド部３０に対し混合弁２をその状態位置に保定させてある。
【００２６】
ｄは、この衝合部材ｃの下面側と混合弁２の中心ボス部２２の上面側との衝合部位にそれぞれ形成した球面状の衝合面である。
【００２７】
１８はボディ１の上面側に形成した取付口、６０はその取付口１８に螺合した調整ネジ蓋、６２はハンドル６１の回動操作によりボディ１に対し昇降するよう前記調整ネジ蓋６０に螺合した調整ネジ筒、６４は前記調整ネジ蓋６０に摺動自在に嵌合させたサーモエレメント３のガイド部３０の先端から突出するロッド３１の突出端を支承させるよう調整ネジ筒６２内に昇降自在に嵌装した支点金具、６３はその支点金具６４を下降側に付勢する逃しバネである。
【００２８】
図５は本発明による湯水自動混合弁Ａの第２の実施例の縦断側面図である。
【００２９】
同図において、１は弁箱を形成するボディ、１０はそれの内部に形成した弁室、１１は湯用の接続口、１２は水用の接続口、１３は湯入口、１４は水入口、１５は混合水出口、１６は混合水取出用の接続口、１７はその接続口１６の内腔に形成した混合室、１８はボディ１の上面側に形成した取付口、ａはその取付口１８からボディ１内に組込んだ混合弁２とサーモエレメントとからなる弁機構、２０は混合弁２に設けた水弁、２１は湯弁、２２は中心ボス部、３０はサーモエレメント３のガイド部、３１はロッド、３２は感温部、５はサーモエレメント３を押し上げるバイアスバネで、これらについては前述の第１の実施例のものと変わりない。
【００３０】
ｂは中心ボス部２２をガイド部３０に嵌挿した混合弁２を、サーモエレメント３の拡径段部３３に設ける衝合部材ｃに押し付けるバネで、混合弁２の上面側とガイド部３０の先端側に設けたＥ型止め輪４２との間に、混合弁２をロッド３１が突出するガイド部３０の先端側に対し反対側の基端側に向けて押し下げるように装設してある。
【００３１】
そして、押し下げられる混合弁２と衝合させる衝合部材ｃは、ガイド部３０の基端側に形設した拡径段部３３を利用して構成し、これに中心ボス部２２の下面側が衝合するようにしてある。
【００３２】
また、この衝合部材ｃと中心ボス部２２の下面側との衝合面ｄはそれぞれ球面状に形成してある。
【００３３】
６０は取付口１８に螺合した調整ネジ蓋、６５はその調整ネジ蓋６０の中心部位に螺合した調整ネジ軸、６６はそれの内端側の端面に形成した支点金具である。
【００３４】
【発明の効果】
以上説明したように、本発明手段による湯水自動混合弁は、弁機構を構成する筒状の混合弁の中心ボス部をサーモエレメントのガイド部に緩く嵌挿して、混合弁とサーモエレメントとの間に設けるバネｂにより混合弁をサーモエレメントに固定状態に設ける衝合部材ｃに対し押し付けることで、混合弁をサーモエレメントに対し自由度を保持せしめた状態で連繋させているのだから、混合弁の水弁または湯弁が水側弁座または湯側弁座に当たったときに、自動的に水弁または湯弁と水側弁座または湯側弁座との平行度が正しくなるように修正されるので、シール性が良好に保持されるとともに組立てが著しく容易になる。
【図面の簡単な説明】
【図１】従前の湯水自動混合弁の縦断側面図である。
【図２】従前の別の形態の湯水自動混合弁の縦断側面図である。
【図３】本発明による湯水自動混合弁の縦断側面図である。
【図４】同上湯水自動混合弁の水弁が開放し湯弁が閉弁した状態時の要部の縦断面図である。
【図５】同上の別の実施例の縦断側面図である。
【図６】同上実施例の湯弁側が閉弁した状態時の縦断側面図である。
【符号の説明】
Ａ…湯水自動混合弁、ａ…弁機構、ｂ…バネ、ｃ…衝合部材、ｄ…球面状の衝合面、１…ボディ、１０…弁室、１１…接続口、１２…接続口、１３…湯入口、１４…水入口、１５…混合水出口、１６…接続口、１７…混合室、１８…取付口、２…混合弁、２０…水弁、２０ａ…水側弁座、２１…湯弁、２１ａ…湯側弁座、２２…中心ボス部、３…サーモエレメント、３０…ガイド部、３１…ロッド、３２…感温部、３３…拡径段部、４…部品、４０…支持金具、４１…ワッシャー、４２…Ｅ型止め輪、４３…規制部材、５…バイアスバネ、６０…調整ネジ蓋、６１…操作ハンドル、６２…調整ネジ筒、６３…逃しバネ、６４…支点金具、６５…調整ネジ軸、６６…支点金具。[0001]
[Technical field to which the invention belongs]
The present invention relates to the adjustment of the amount of hot water and water to be supplied by mixing the hot water and water to be supplied at a desired ratio and taking out the water as a mixed water at a desired temperature. The present invention relates to an improvement on a hot water automatic mixing valve that is automatically performed by operating a temperature sensor that senses temperature.
[0002]
[Prior art]
As shown in FIG. 1, the conventional hot water / automatic mixing valve A usually has a valve chamber 10 formed in the body 1 as its valve box, and on the side surface on the outer surface side of the body 1. A hot water connection port 11 connected to the hot water supply pipe and a water connection port 12 connected to the water supply pipe are provided, and the hot water connection port 11 is connected to the lower end side of the valve chamber 10 by the hot water inlet 13. The water connection port 12 communicates with the upper end side of the valve chamber 10 through the water inlet 14, and the lower surface side of the body 1 is connected to and communicated with the mixed water outlet 15 formed on the bottom surface side of the valve chamber 10. A connection port 16 for taking out water is formed as a form having a mixing chamber 17 in its inner cavity, and an attachment port 18 for inserting the valve mechanism a incorporated in the valve chamber 10 is provided on the upper surface side. Form.
[0003]
The valve mechanism a includes a cylindrical valve-like mixing valve 2 in which a water valve 20 is formed on the upper edge side and a hot water valve 21 is formed on the lower edge side, and a guide portion 30 is fitted to the central boss portion 22 of the mixing valve 2. The thermo element 3 is inserted into the mixing valve 2 and assembled integrally with the mixing valve 2. The assembly is made up of the central boss portion 22 of the mixing valve 2 and the guide portion 30 of the thermo element 3 inserted therein. The central boss portion 22 of the mixing valve 2 is made to be the base of the guide portion 30 by the component 4 including the support fitting 40 to be inserted into the shaft 30, the washer 41 having a spring property, and the E-type retaining ring 42 to be fitted to the guide portion 30. This is performed by sandwiching the enlarged diameter step portion 33 formed on the end side and the E-type retaining ring 42 so as to be integrally connected.
[0004]
The valve mechanism a assembled in this way is dropped into the valve chamber 10 from the mounting port 18 on the upper surface side of the body 1 described above, and the temperature sensing part 32 of the thermo element 3 is connected to the inside of the connection port 16 for taking out the mixed water. A bias spring located in the mixing chamber 17 formed in the cavity and loaded so that the rod 31 protruding from the guide portion 30 protrudes upward from the attachment port 18, and the thermoelement 3 is provided in the connection port 16. Energize to push up by 5.
[0005]
Then, an adjustment screw lid 60 for screwing the guide portion 30 of the thermo element 3 of the valve mechanism a to be fitted in a slidable manner is screwed into the mounting port 18 on the upper surface side of the body 1 and assembled. In addition, an adjustment screw cylinder 62 that is displaced up and down by the turning operation of the operation handle 61 and a fulcrum metal fitting 64 that is provided in the inner cavity of the adjustment screw cylinder movably up and down and is urged downward by a release spring 63 are incorporated. Thus, the protruding end of the rod 31 of the thermo element 3 is supported by the fulcrum fitting 64.
[0006]
And the water side valve seat 20a which opposes the water valve 20 of the mixing valve 2 is formed in the lower surface of the adjustment screw lid 60, and the hot water side valve which opposes the hot water valve 21 around the mixed water outlet 15 of the bottom part of the valve chamber 10 is provided. The seat 21a is formed, and by this, the mixing valve 3 is automatically moved by the operation of the rod 31 of the thermoelement 3 coming in and out due to the temperature change of the mixed water in the mixing chamber 17, and the hot water valve 21 and the water valve 20 The temperature of the mixed water to be taken out is maintained at the set temperature by changing the opening degree.
[0007]
FIG. 2 is a cross-sectional view of another embodiment of the hot and cold automatic mixing valve A.
[0008]
The hot water automatic mixing valve A is an example in which the connection state of the mixing valve 2 and the thermo element 3 of the valve mechanism a is changed, and the remaining basic configuration is the hot water automatic in the form shown in FIG. It is the same as a mixing valve. The valve mechanism a is slidably inserted into the cylindrical regulating member 43 installed in the body 1 so that the guide part 30 of the thermo element 3 moves up and down along the axial direction correctly. The center boss portion 22 of the mixing valve 2 is fitted and inserted into the body portion of the guide portion 30 that is regulated and protrudes upward from the restriction member 43, and the E-type retaining ring 42 that fits on the circumferential surface of the body portion of the guide portion 30. The upward movement of the central boss portion 22 with respect to the guide portion 30 is restricted, and the mixing boss 2 is escaped by the bias spring 5 serving also as a spring so that the central boss portion 22 is pushed up until it hits the E-type retaining ring 42. This is an example in which the mixing valve 2 and the thermo element 3 are assembled integrally.
[0009]
[Problems to be solved by the invention]
In the conventional automatic hot water mixing valve A described above, in the first example, the mixing valve 2 and the guide portion 30 of the thermo element 3 include the support bracket 40, the washer 41, and the E-type retaining ring 42. Since the three parts are integrally connected, the parallelism between the hot water valve 21 and the hot water side valve seat 21a of the mixing valve 2 and the water valve 20 and the water side valve seat are caused by bending when the parts are assembled. Since the parallelism with 20a is difficult to be obtained, many defectively assembled products come out, and it is difficult to assemble the parts in a state where the parallelism is correctly achieved. The sealing performance by the valve 21 and the sealing performance by the water valve 20 when the set temperature is set high are poor, and there is a risk that hot water much higher than the set temperature may be produced when water is required, and only hot water is required. When high temperature water comes out While there is such a problem.
[0010]
Another embodiment shown in FIG. 2 is an example in which a bias spring 5 is provided between the mixing valve 2 and the body 1 so as to serve as a release spring. Since there is no force to push up 3, when the water valve 20 of the mixing valve 2 hits the water side valve seat 20 a, the thermo element 3 can not be pushed up any further, so that the thermo element 3 and the mixing valve 2 are always integrated. By being held in a connected state, the parallelism of the mixing valve 2 with respect to the valve seats 20a and 21a is restricted to the assembled state with respect to the guide portion 30 of the thermoelement 3, as in the above-described conventional example. In addition, the sealing performance is poor, and the bias spring 5 is located outside the thermo element 3, so that it is difficult to reduce the size and that water and hot water pass between the bias springs 5 and are mixed. Degrees and there is a bad problem.
[0011]
The present invention has been made to solve the above-mentioned problems occurring in the conventional means, and the mixing valve and the thermo element are connected in a state where the mixing valve is connected to the thermo element with a degree of freedom. When the hot water valve or water valve of the valve collides with the hot water valve seat or the water side valve seat, the mixing valve automatically moves so that the hot water valve and the water valve become hot water valve seat and water side valve seat. It is an object of the present invention to provide a new means for improving the sealing property so that the state is corrected to be in a state of being correctly parallel to each other.
[0012]
[Means for Solving the Problems]
In the present invention, as means for achieving the above-mentioned object, a valve chamber is provided in the inner cavity, a hot water supply connection port connected to the hot water supply pipe on the outer surface side, and a water supply connection port connected to the water supply pipe; In the body provided with a connection port for taking out the mixed water, a guide part is formed by a temperature sensing operation of a tubular valve shaped mixing valve in which a water valve is formed at one end edge and a hot water valve is formed at the other end edge. In a hot water / water automatic mixing valve that uses a valve mechanism a connected in combination with a thermo element through which a rod that can be inserted and exits, the center boss of the mixing valve of the valve mechanism is loosely inserted into the guide part of the thermo element. The mixing valve is pressed against an abutting member c provided in a fixed state on the thermo element by a spring b provided between the mixing valve and the thermo element, and the mixing valve is linked in a state where the degree of freedom is maintained with respect to the thermo element. What was Providing a hot water / water automatic mixing valve, which has a feature, and further, a valve chamber is provided in the lumen, and a hot water connection port connected to the hot water supply pipe on the outer surface side and a water supply connection port connected to the water supply pipe and mixed water Fits into the guide part by the temperature sensing operation of the tubular valve-like mixing valve with a water valve formed at one end edge and a hot water valve formed at the other end edge in the body provided with a connection port for extraction. In a hot water / water automatic mixing valve that inserts a valve mechanism a connected in combination with a thermo element into and out of which a rod can be inserted, the central boss of the mixing valve of the valve mechanism a is loosely inserted into the guide portion of the thermo element, and the guide The mixing valve is urged toward the base end side of the guide portion by a spring b provided between the distal end side of the portion and the upper surface side of the mixing valve, and the lower surface side of the mixing valve is fixed to the thermo element. Pressing against the abutting member, the mixing valve is free to the thermo element Is intended to raise the hot water automatic mixing valve, characterized in that it allowed interlocking in a state where allowed retained.
[0013]
DETAILED DESCRIPTION OF THE INVENTION
The means of the present invention comprises a connection port for hot water supply communicating with the valve chamber via a hot water inlet on the outer surface side of the valve box having a valve chamber for storing a valve mechanism therein, and a water inlet for the valve chamber. The connection port for water supply that communicates via the valve, the connection port for extracting mixed water that communicates with the mixed water outlet of the valve chamber, and the temperature setting for setting the valve mechanism for adjusting the valve mechanism in the valve chamber are adjusted. And a valve mechanism to be inserted into the valve chamber of the valve mechanism is formed in a cylindrical shape in which a water valve is formed on the upper edge side and a hot water valve is formed on the lower edge side. Combining the mixing valve and a thermo element that moves in and out of the rod in response to temperature changes, the mixing valve automatically moves to change the opening of the hot water valve and water valve, and the temperature adjustment mechanism Rotate the screw cylinder or screw 杆 by operating the handle or using a tool. The position of the fulcrum plate that supports the projecting end of the rod of the thermo-element of the valve mechanism, the be of the structure for changing displaced in and out direction of the rod may be configured similarly to the conventional means.
[0014]
Thus, the mixing valve and the thermo element constituting the valve mechanism are connected in such a manner that the central boss portion of the mixing valve is slidable in the axial direction with respect to the guide portion of the thermo element and within a predetermined angle range. The mixing valve is inserted in a swingable manner, and the mixing valve is pressed against an abutting member provided fixed to the guide portion of the thermo element by a spring interposed between the mixing valve and the thermo element, and held in a fixed state. To do.
[0015]
In this case, the spring interposed between the mixing valve and the thermo element is provided in the direction in which the mixing valve is pushed up, and is pressed against the abutting member provided by fixing the mixing valve to the thermo element. It may be held in the state position, and conversely, the mixing valve is provided in the direction of pushing down, and the mixing valve is used as an abutting member at the base end side of the thermoelement guide part. Then, it may be pressed against it, or pressed against an abutting member that is separately fixed to the thermo element, and the mixing valve may be held in its state position with respect to the thermo element.
[0016]
As a result, the thermo element moves with respect to the hot water side valve seat and the water side valve seat provided in the body of the valve box by the temperature sensitive operation, whereby the mixing valve held by the thermo element is moved together. When the movement or its hot water valve or water valve abuts the opposite hot water or water side valve seat, the pressure contact with the abutting member of the mixing valve is released, and the degree of freedom of the mixing valve is ensured. Depending on the degree of freedom, the mixing valve moves in a state in which the hot water valve or the water valve and the valve seat opposite to each other are parallel to each other, and in this state, the mixing valve is pressed against the valve seat by a spring to maintain a good sealing performance.
[0017]
At this time, by forming the abutting surface of the mixing valve and the abutting member in a spherical shape, the operation of obtaining parallelism with respect to the hot water valve of the mixing valve and the valve seat of the water valve is performed more accurately. It becomes like this.
[0018]
【Example】
Next, embodiments will be described in detail with reference to the drawings. It should be noted that the same reference numerals are given to constituent members having the same effect as those of the conventional means.
[0019]
FIG. 3 is a longitudinal side view of a first embodiment of an automatic mixing valve according to the present invention. In FIG. 3, 1 is a body of a valve box, which is formed in a cylindrical shape with the axial direction being the vertical direction. A valve chamber 10 is formed in the cavity.
[0020]
A hot water connection port 11 is connected to a hot water supply pipe provided on one side of the body 1 and communicates with the lower end side of the valve chamber 10 through a hot water inlet 13.
[0021]
A water connection port 12 is connected to a water supply pipe provided on the other side of the body 1 and communicates with the upper end side of the valve chamber 10 through a water inlet 14.
[0022]
Reference numeral 16 denotes a connection port for taking out the mixed water, which communicates with a mixed water outlet 15 provided at the bottom of the valve chamber 10 and is formed on the bottom surface side of the body 1, and its inner cavity is formed in the mixing chamber 17. It is formed.
[0023]
a is a valve mechanism incorporated in the valve chamber 10, and is a cylindrical mixing valve 2 in which a water valve 20 is provided on the upper edge side and a hot water valve 21 is provided on the lower edge side, and a rod fitted into a shaft-shaped guide portion 30. 31 is a normal combination of a thermoelement 3 connected in and out by a temperature sensing operation of a temperature sensing section 32 enclosing wax, and the mixing valve 2 thereof is located in the valve chamber 10; The temperature sensing part 32 of the thermo element 3 is incorporated in the body 1 in a state where it is located in the mixing chamber 17, and the bias spring 5 provided in the mixing chamber 17 acts on the thermo element 3 in the direction of pushing up.
[0024]
In the valve mechanism a, the mixing valve 2 and the thermo element 3 are connected by loosely inserting the center boss portion 22 of the mixing valve 2 into the outer periphery of the guide portion 30 of the thermo element 3 and the center boss portion 22 It is urged so as to push upward toward the tip end side of the guide part 30 from which the rod 31 protrudes by a spring b fitted in the guide part 30 in advance.
[0025]
Then, an abutting member c is fitted on the distal end side of the guide portion 30 protruding upward from the central boss portion 22, and the movement of the guide portion 30 toward the distal end side is regulated by the E-type retaining ring 42. The upper surface side of the central boss portion 22 of the mixing valve 2 is pressed against the lower surface side of the abutting member c by being pushed up by the spring b, and the mixing valve 2 is held in its state position with respect to the guide portion 30. I'm allowed.
[0026]
d is a spherical abutting surface formed at each abutting portion between the lower surface side of the abutting member c and the upper surface side of the central boss portion 22 of the mixing valve 2.
[0027]
18 is an attachment port formed on the upper surface side of the body 1, 60 is an adjustment screw lid screwed into the attachment port 18, and 62 is screwed into the adjustment screw lid 60 so as to be moved up and down with respect to the body 1 by turning operation of the handle 61. The combined adjustment screw cylinder 64 is raised and lowered into the adjustment screw cylinder 62 so as to support the protruding end of the rod 31 protruding from the tip of the guide portion 30 of the thermo element 3 slidably fitted to the adjustment screw lid 60. A fulcrum fitting 63, which is freely fitted, is a relief spring that urges the fulcrum fitting 64 downward.
[0028]
FIG. 5 is a longitudinal side view of a second embodiment of the hot and cold automatic mixing valve A according to the present invention.
[0029]
In the figure, 1 is a body forming a valve box, 10 is a valve chamber formed therein, 11 is a hot water connection port, 12 is a water connection port, 13 is a hot water inlet, 14 is a water inlet, Reference numeral 15 is a mixed water outlet, 16 is a connection port for taking out mixed water, 17 is a mixing chamber formed in the lumen of the connection port 16, 18 is a mounting port formed on the upper surface side of the body 1, and a is a mounting port 18 thereof. A valve mechanism comprising a mixing valve 2 and a thermo element incorporated in the body 1 from the above, 20 a water valve provided on the mixing valve 2, 21 a hot water valve, 22 a central boss portion, and 30 a guide portion of the thermo element 3 , 31 is a rod, 32 is a temperature sensing part, and 5 is a bias spring that pushes up the thermoelement 3, which is the same as that of the first embodiment.
[0030]
b is a spring that presses the mixing valve 2 in which the central boss portion 22 is inserted into the guide portion 30 against an abutting member c provided on the diameter-expanded step portion 33 of the thermoelement 3. Between the E-type retaining ring 42 provided on the distal end side, the mixing valve 2 is installed so as to be pushed down toward the proximal end side opposite to the distal end side of the guide portion 30 from which the rod 31 protrudes.
[0031]
The abutting member c for abutting with the pushed-down mixing valve 2 is configured using an enlarged diameter step portion 33 formed on the proximal end side of the guide portion 30, and the lower surface side of the central boss portion 22 is opposed to this. It is supposed to match.
[0032]
The abutting surfaces d of the abutting member c and the lower surface side of the central boss portion 22 are each formed in a spherical shape.
[0033]
Reference numeral 60 denotes an adjustment screw cover screwed into the attachment port 18, 65 denotes an adjustment screw shaft screwed to the central portion of the adjustment screw cover 60, and 66 denotes a fulcrum fitting formed on the end face on the inner end side thereof.
[0034]
【The invention's effect】
As described above, the automatic hot water mixing valve according to the present invention means that the central boss portion of the cylindrical mixing valve constituting the valve mechanism is loosely inserted into the guide portion of the thermo element, so that it is between the mixing valve and the thermo element. By pressing the mixing valve against the abutting member c provided in a fixed state on the thermo element by the spring b provided on the mixing element, the mixing valve is linked in a state where the degree of freedom is maintained with respect to the thermo element. When the water valve or hot water valve hits the water side valve seat or hot water side valve seat, the parallelism between the water valve or hot water valve and the water side valve seat or hot water side valve seat is automatically corrected. Therefore, the sealing property is maintained well and the assembly is remarkably facilitated.
[Brief description of the drawings]
FIG. 1 is a vertical side view of a conventional hot and cold automatic mixing valve.
FIG. 2 is a vertical sectional side view of another conventional hot water automatic mixing valve.
FIG. 3 is a vertical sectional side view of a hot and cold automatic mixing valve according to the present invention.
FIG. 4 is a longitudinal sectional view of the main part when the water valve of the hot water automatic mixing valve is open and the hot water valve is closed.
FIG. 5 is a longitudinal side view of another embodiment of the same.
FIG. 6 is a longitudinal side view of the embodiment when the hot water valve side is closed.
[Explanation of symbols]
A ... Hot water / water automatic mixing valve, a ... Valve mechanism, b ... Spring, c ... Contact member, d ... Spherical contact surface, 1 ... Body, 10 ... Valve chamber, 11 ... Connection port, 12 ... Connection port, DESCRIPTION OF SYMBOLS 13 ... Hot water inlet, 14 ... Water inlet, 15 ... Mixed water outlet, 16 ... Connection port, 17 ... Mixing chamber, 18 ... Mounting port, 2 ... Mixing valve, 20 ... Water valve, 20a ... Water side valve seat, 21 ... Hot water valve, 21a ... Hot water side valve seat, 22 ... Center boss part, 3 ... Thermo element, 30 ... Guide part, 31 ... Rod, 32 ... Temperature sensing part, 33 ... Diameter expansion step part, 4 ... Parts, 40 ... Support Metal fitting, 41 ... Washer, 42 ... E-type retaining ring, 43 ... Restriction member, 5 ... Bias spring, 60 ... Adjustment screw lid, 61 ... Operation handle, 62 ... Adjustment screw cylinder, 63 ... Relief spring, 64 ... Supporting metal fitting, 65 ... adjustment screw shaft, 66 ... fulcrum bracket.

Claims

内腔に弁室を設け、外面側に給湯配管に接続する給湯用の接続口と給水配管に接続する給水用の接続口と混合水取出用の接続口とを設けたボディ内に、一端縁に水弁を形成し他端縁に湯弁を形成した筒状弁状の混合弁と感温部の感温作動によりガイド部に嵌挿せるロッドが出入りするサーモエレメントとを組合わせて連繋した弁機構ａを装入する湯水自動混合弁において、弁機構の混合弁の中心ボス部を、サーモエレメントのガイド部に緩く嵌挿して、混合弁とサーモエレメントとの間に設けるバネｂにより、混合弁をサーモエレメントに固定状態に設ける衝合部材ｃに対し押し付けて、混合弁をサーモエレメントに対し自由度を保持せしめた状態として連繋せしめたことを特徴とする湯水自動混合弁。Inside the body provided with a valve chamber in the lumen, a connection port for hot water supply connected to the hot water supply pipe on the outer surface side, a connection port for water supply connected to the water supply pipe, and a connection port for taking out mixed water A valve that is a combination of a cylindrical valve-like mixing valve with a water valve formed at the other end and a hot water valve at the other end and a thermo element with a rod that can be inserted into the guide part by temperature sensing operation of the temperature sensing part. In the hot water automatic mixing valve charged with the mechanism a, the central boss portion of the mixing valve of the valve mechanism is loosely inserted into the guide portion of the thermo element, and the mixing valve is moved by the spring b provided between the mixing valve and the thermo element. Is pressed against an abutting member c provided in a fixed state on the thermo element, and the mixing valve is linked in a state in which the degree of freedom is maintained with respect to the thermo element.

内腔に弁室を設け、外面側に給湯配管に接続する給湯用の接続口と給水配管に接続する給水用の接続口と混合水取出用の接続口とを設けたボディ内に、一端縁に水弁を形成し他端縁に湯弁を形成した筒状弁状の混合弁と感温部の感温作動によりガイド部に嵌挿せるロッドが出入りするサーモエレメントとを組合わせて連繋した弁機構ａを装入する湯水自動混合弁において、弁機構ａの混合弁の中心ボス部を、サーモエレメントのガイド部に緩く嵌挿し、ガイド部の先端側と混合弁の上面側との間に設けるバネｂにより、混合弁をガイド部の基端側に向け付勢して、その混合弁の下面側をサーモエレメントに固定状態に設けた衝合部材に押し付け、混合弁をサーモエレメントに対し自由度を保持せしめた状態として連繋せしめたことを特徴とする湯水自動混合弁。Inside the body provided with a valve chamber in the lumen and provided with a hot water supply connection port connected to the hot water supply pipe on the outer surface side, a water supply connection port connected to the water supply pipe, and a connection port for mixed water extraction A valve that is a combination of a cylindrical valve-shaped mixing valve with a water valve formed at the other end and a hot water valve at the other end, and a thermo-element with a rod that can be inserted into the guide section through the temperature sensing operation of the temperature sensing section. In the hot and cold automatic mixing valve charged with the mechanism a, the central boss portion of the mixing valve of the valve mechanism a is loosely inserted into the guide portion of the thermo element, and is provided between the tip side of the guide portion and the upper surface side of the mixing valve. The spring b pushes the mixing valve toward the base end side of the guide portion, presses the lower surface side of the mixing valve against the abutting member fixed to the thermo element, and allows the mixing valve to move with respect to the thermo element. It is characterized by being connected as a state of holding Hot and cold water automatic mixing valve.

混合弁と衝合部材との衝合面を球面状に形成することを特徴とする請求項１または請求項２記載の湯水自動混合弁。The hot and cold automatic mixing valve according to claim 1 or 2, wherein the abutting surface of the mixing valve and the abutting member is formed in a spherical shape.