JP3482376B2 - Hot water supply control valve - Google Patents
Hot water supply control valveInfo
- Publication number
- JP3482376B2 JP3482376B2 JP2000149492A JP2000149492A JP3482376B2 JP 3482376 B2 JP3482376 B2 JP 3482376B2 JP 2000149492 A JP2000149492 A JP 2000149492A JP 2000149492 A JP2000149492 A JP 2000149492A JP 3482376 B2 JP3482376 B2 JP 3482376B2
- Authority
- JP
- Japan
- Prior art keywords
- valve
- valve body
- hot water
- cylindrical
- spring
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
Landscapes
- Domestic Plumbing Installations (AREA)
- Temperature-Responsive Valves (AREA)
- Multiple-Way Valves (AREA)
Description
【発明の詳細な説明】
【0001】
【発明の属する技術分野】本発明は、例えば、浴室のシ
ャワー設備等への給湯経路上に設置される湯水供給用制
御弁に関し、更に詳しくは、温水と冷水の混合水を常に
所定の設定温度範囲内で給湯可能にした湯水供給用制御
弁に関する。
【0002】
【従来の技術】一般に、シャワー設備等の給湯システム
においては、所望の適正温度に設定された給湯器からの
温水と冷水の混合水を給湯経路を介して給湯している。
【0003】
【発明が解決しようとする課題】しかしながら、このよ
うな従来の給湯システムにあっては、夏季や冬季での給
湯温度の差が激しく、特に、冬季では、給湯器からの混
合水が給湯経路を流れる間に冷されて、所定の設定温度
以下の冷水となってシャワーから出てしまうことがある
ため、人身に不快感を与える。また、シャワー時に混合
水栓の故障等によって、温水への冷水の混合が不能にな
った場合には、所定の設定温度以上の異常高温の温水が
シャワーから出てしまう恐れがあるため、火傷等の重大
な危険性を及ぼす。
【0004】本発明は、上記した事情に鑑みてなされた
もので、温水と冷水の混合水を常に所定の設定温度範囲
内で給湯することができる湯水供給用制御弁を提供する
ことを目的とする。
【0005】
【課題を解決するための手段】前記の目的を達成するた
めに、本発明は、温水と冷水の混合水の供給経路上に設
置され、一端側に湯水流入口1Aを有し、他端側に湯水
流出口1Bを有する弁本体1内に、上流側の第1開閉弁
10と下流側の第2開閉弁20を直列的に配設し、両開
閉弁10、20の相互動作により、設定温度範囲内の混
合水を湯水流出口1B側に流し、設定温度以下の混合水
は弁本体1の壁に開設した上流側(冷水用)ドレーン口
3を通してドレーン管2に流し、設定温度以上の混合水
は、弁本体1の壁に開設した下流側(熱水用)ドレーン
口7を通してドレーン管2に流すようにした湯水供給用
制御弁であって、上流側の第1の開閉弁10は、スプリ
ング13により前記上流側(冷水用)ドレーン口3を閉
弁するように付勢された筒状可動弁体11からなる第1
の弁機構と、所定の低レベル設定温度以上の混合水の温
度に感応する感熱付勢体16がスプリング15の作用に
打ち勝って伸長動作することで、筒状可動弁体11との
間の弁座を開くように設けられた可動弁体14であっ
て、さらに、所定の低レベル設定温度以下の混合水の温
度による、形状記憶合金ばねからなる感熱付勢体16の
縮小動作に伴い、これに打ち勝つスプリング15の弾発
力で筒状可動弁体11との間の弁座を閉じると共に、そ
の閉弁動作に連動して、スプリング13に抗して筒状可
動弁体11にドレーン管2に通じる上流側(冷水用)ド
レーン口3を開弁させるように連設した可動弁体14に
よって構成された第2の弁機構とから構成し、下流側の
第2の開閉弁20は、所定の高レベル設定温度上の混合
水の温度に感応する形状記憶合金ばねからなる感熱付勢
体23が伸長動作することで、筒状弁体25が湯水流出
口1Bを閉弁すると共に、ドレーン管2に通じる下流側
(熱水用)ドレーン口7を開弁する前記筒状弁体25と
一体の可動弁体21からなる第3の弁機構と、所定の高
レベル設定温度以下の混合水の温度に感応して感熱付勢
体23が縮小動作することで、スプリング26の作用に
より湯水流出口1Bを開弁すると共に、前記可動弁体2
1が下流側(熱水用)ドレーン口7を閉弁するように一
体に設けた筒状弁体25からなる第4の弁機構によって
構成したことを特徴とする。
【0006】
【0007】すなわち、本発明は、上記した構成を採用
することにより、弁本体の湯水流入口側から流入する混
合水が所定の設定温度範囲内であると、第1の弁機構及
び第2の弁機構が作動し、適正温度の混合水が湯水流出
口側から流出される。また、混合水が所定の設定温度範
囲以下であると、第1の弁機構が開弁状態、第2の弁機
構が閉弁状態を維持し、混合水が上流側ドレーン口から
弁本体の外部に排水されるため、従前のような冷水が湯
水流出口側から流出することがない。
【0008】一方、混合水が所定の設定温度範囲以上で
あると、第3の弁機構及び第4の弁機構が作動し、混合
水が下流側ドレーン口から弁本体の外部に排水されるた
め、従前のような異常高温の温水が湯水流出口側から流
出する恐れがない。
【0009】さらに、各弁機構の開閉動作が形状記憶合
金ばねの混合水の温度変化に伴う伸長/縮小作用の組合
せにて行われるため、即応性を高めるとともに、弁機構
全体も構造的に簡略化する。
【0010】
【発明の実施の形態】以下、本発明の実施の形態を図面
を参照しながら詳細に説明する。図1は湯水供給用制御
弁の全体構成を示す断面図、図2は平面図である。
【0011】すなわち、本発明に係る湯水供給用制御弁
は、例えば、浴室のシャワー設備等への給湯器からの温
水と冷水の混合水Wの給湯経路上に設置される弁本体1
と、この弁本体1の外周面に設けた係合溝および係止段
部に嵌合係止するように設けた排水受け室を有する筒状
排水受2aに接続し外部に連通する排水経路を形成する
ドレーン管2とを有する。
【0012】前記弁本体1は、上部筒状ケーシング1C
の下部の雄ねじ部に、下部筒状ケーシング1Dの上部の
雌ねじ部を直列に螺合連結して構成し両端部に接続用ね
じ部を備え、その弁本体1内には、一方の湯水流入口1
A側から他方の湯水流出口1B側に向けて流入する混合
水Wの温度に応じて開閉制御される上流側に設けられた
第1の開閉弁10と、下流側に設けられた第2の開閉弁
20を有する。
【0013】前記上流側の第1の開閉弁10は、弁本体
1の上流側外周側面に設けた環状排水受2aに接続する
ドレーン管2に通じる上部筒状ケーシング1Cに設けら
れた冷水用ドレーン口3を開閉する第1の筒状可動弁体
11と、この筒状可動弁体11の周側面に冷水用ドレー
ン口3に対応するように開口させた弁孔(排水孔)12
と、筒状可動弁体11を弁本体1の下流側軸方向(閉弁
方向)に摺動自在に常時付勢する圧縮コイルばねからな
る第1のスプリング13とを備えている。前記冷水用ド
レーン口3の内側、すなわち上部筒状ケーシング1Cの
内周面の周方向には、前記冷水用ドレーン口3に連通す
る環状室3aが設けられている。
【0014】前記第1のスプリング13における上流側
の端部は、湯水導入孔4Aを有する複数段の段部を有す
る環状の環状支持部材4により支持され、前記環状支持
部材4は、その上流側に上部ケーシング1cに設けられ
た係止溝に係合するリング状のストッパ4bに係合し、
かつ前記スプリング13は筒状可動弁体11の大径筒状
部11bの下部に一体に屈曲連設された内向き段部11
cに係合している。また前記内向き段部11cに一体に
屈曲連設され下流方向に突出するように一体に前記大径
筒状部11bと同心状に連設された小内径の環状弁座1
1aを備えている。そして、前記筒状可動弁体11、弁
孔12及びスプリング13にて第1の弁機構を構成して
いる。
【0015】前記筒状可動弁体11は上部ケーシング1
cの内周面に液密に軸方向に摺動可能に、かつ筒状可動
弁体11における内向き段部(フランジ)11cに係合
すると共に、外側環状フランジ4cおよび中間部環状フ
ランジ4dおよび内側環状フランジ4eを階段状に屈曲
連設して形成されている前記環状支持部材4における前
記外側フランジ4cに係合する圧縮状態のコイルからな
るスプリング13により、筒状可動弁体11における弁
口12がドレーン口3に対向する位置になるように常時
付勢されている。
【0016】また上部ケーシング1cの内周面には、前
記冷水用ドレーン口3と同レベルにおいて環状溝3aが
設けらており、前記環状溝3aにより筒状可動弁体11
が軸方向を中心として水平回転しても、前記弁孔12と
前記環状溝3aとが連通している間は、ドレーン管2か
ら排水される。
【0017】また、筒状可動弁体11の下流側開口周縁
部11aは、環状弁座を兼ねようになっているととも、
その内部には、環状フランジ部14aに一体に大径筒状
部分14bが連設されていると共にこれに一体に上流側
端部が閉塞された筒状頭部14cを有するほぼキャップ
状の第1の可動弁体14が下流側から挿入されている。
この可動弁体14の下流側周端縁部に張出し形成された
環状フランジ部14aは、環状弁座11aに接離可能に
なっているもので、その頭部14cは、環状支持部材4
の中央部貫通孔に遊嵌されている。
【0018】さらに、前記可動弁体14の内部には、第
1のスプリング13よりも付勢力(ばね定数)の大きな
第2のスプリング15が下流側から同心状に挿入され
て、その上端部が可動弁体14における頭部下端の中間
環状フランジに係合されている。この第2のスプリング
15は、その下流側端部が弁本体1における上部ケーシ
ング1Cの下流側(下端部)の内向き段部に係止するよ
うに設けた湯水導入用孔を有する円盤状の支持板5に係
合していると共に、前記支持板5に固定された保持部材
6の頭部に嵌合保持されて、可動弁体14を上流側軸方
向に向けて常に付勢し、そのフランジ部(弁部)14a
を環状弁座11aに当接させることにより、閉弁状態が
維持されるようになっている。なお、前記支持板5は、
可動弁体14および第1の筒状可動弁体11ならびにス
プリング13を介して間接的に支持部材4に係合するス
プリング15により常時下流方向に上部ケーシング1C
の係止段部に押し付けられているので、上流側に移動す
ることはない。なお前記圧縮状態で配置されているスプ
リング13のばね定数よりもスプリング15のばね定数
が大きく設定されている。
【0019】さらにまた、可動弁体14の環状フランジ
部14aの基部側と環状支持部材4の中間環状フランジ
4dとの間には、第1の感熱応動手段としての形状記憶
合金ばねの圧縮コイル16からなる感熱付勢体16が組
み付けられ、この感熱付勢体16の感熱応動に伴う伸長
動作にて、可動弁体14を第2のスプリング15の付勢
力に抗して下流側に移動可能に付勢されるようになって
いる。また前記可動弁体14の下流方向への移動と共に
スプリング13により第1の筒状可動弁体11が下流方
向に移動することにより、上流側ドレーン口3が閉弁さ
れる。そして、これら環状弁座11a、可動弁体14、
フランジ部14a、スプリング15及び感熱付勢体16
にて第2の弁機構を構成している。この場合、筒状可動
弁体11の下流側への移動範囲は、例えば、弁本体1の
内周壁面に形成される内向き突出段部からなるストッパ
17にて規制され、前記筒状可動弁体11が前記ストッ
パ17に当接するまで、前記筒状可動弁体11と前記可
動弁体14は、これらの係合部である環状弁座11aと
フランジ部14aの閉弁した状態の係合を保って、下流
側に共に移動する。
【0020】すなわち、第2の弁機構の感熱付勢体16
は、給湯初期待機状態において、弁本体1の周側面に設
けたドレーン管2に通じる冷水用ドレーン口3と、筒状
可動弁体11の弁孔12とが対応するように、前記スプ
リング15と前記スプリング13との釣り合い関係によ
り位置決めされている。これにより、第1の弁機構に
て、冷水用ドレーン口3の開弁状態を維持するようにな
っている。
【0021】一方、第2の開閉弁20は、弁本体1の下
流側に設けたドレーン管2に通じる熱水用ドレーン口7
を閉弁可能な第2の筒状可動弁体21を有する。前記第
2の筒状可動弁体21は、広狭二段の筒状体からなる形
態を有し、最外側の大外径の筒状部21aは下部ケーシ
ング1Dの内周面に軸方向に液密に摺動可能に嵌設さ
れ、前記筒状可動弁体21の中間部には内向き環状フラ
ンジ21bが一体に屈曲形成され、前記内向き環状フラ
ンジ21bの内径側に一体に小径筒状部分21cが同心
状に屈曲形成され、前記小径筒状部分21cの下流側端
部に内向きに環状フランジ21dが一体に屈曲形成さ
れ、前記環状フランジ21dの上面には、コイル状の形
状記憶合金ばねの圧縮ばねからなる感熱付勢体23の下
部が係合していると共に、前記感熱付勢体23の上部
は、筒状弁体1の内側中間部に同心状に配設されている
筒状支持部材8の支承フランジ8aに係合している。
【0022】この形状記憶合金ばねからなる感熱付勢体
23により、所定温度以上の混合水が流入してきたとき
には、前記環状フランジ21dに係合する筒状弁体25
の環状下端部を下部ケーシング1Dの環状弁座9に圧着
した状態で着座して閉弁する。前記第2の筒状可動弁体
21の内向き環状フランジ22bには、弁本体1の下流
側端部の湯水流出口1Bに連通する湯水導入口22が周
方向に間隔を置いて設けられている。
【0023】また、可動弁体21は、下部ケーシング1
Dの中間部内周面に液密に摺動自在に嵌設され、前記可
動弁体21の上端部は上部ケーシング1Cの下端面に係
合することにより、上流方向に移動することが阻止さ
れ、また下部ケーシング1Dにおける中間部内向き段部
27に環状フランジ21b下面が係合する前に前記筒状
弁体25の先端部が環状弁座9に着座するように設定さ
れている。前記下部ケーシング1Dにおける上部ケーシ
ング1Cとの接合部下面付近の周壁に、周方向に間隔を
おいて複数の下流側ドレーン口(熱水用ドレーン口)7
が前記上部ケーシング1Cの下端面に近接した位置に設
けられている。従って前記筒状可動弁体21が上部ケー
シング1Cの下面から離れた直後には、前記外部に連通
する下流側ドレーン口7から、所定の温度以上の高温の
混合水を排水することができる。
【0024】前記湯水導通孔を有する支持板5の下流側
に筒状支持部材8の一端面が溶接等により固定され、前
記筒状支持部材8の下流側には半径方向外側に張り出す
環状支承フランジ8aが設けられ、前記支承フランジ8
aと前記筒状可動弁体21における内向き環状フランジ
21dとの間に、形状記憶合金ばねの圧縮ばね23から
なる感熱応動手段としての感熱付勢体23が設けられて
いる。
【0025】すなわち、前記可動弁体21の一端が湯水
導通孔を有する支持板5の下面に溶接等にて固定される
フランジ付き筒状支持部材8を介して組み付けられる感
熱応動手段としての形状記憶合金ばねの圧縮コイルばね
からなる感熱付勢体23の感熱応動に伴う伸長動作に
て、弁本体1の軸方向に沿う開弁方向に摺動可能に付勢
されるようになっていると共に前記筒状弁体25の下流
方向の移動により環状弁座9を閉弁するように構成され
ている。そして、これら可動弁体21、湯水導入口22
及び感熱付勢体23にて第3の弁機構を構成している。
【0026】さらに、第2の開閉弁20は、その一端が
筒状支持部材8または保持部材6に溶接等により固定さ
れて弁本体1の下流側軸方向に延びる筒状ガイド部材2
4を有する。この筒状ガイド部材24には、感熱付勢体
23の感熱応動に伴う伸長動作に共動して弁本体1の軸
方向に相対的に液密に摺動可能な筒状弁体25が挿嵌さ
れ、この筒状弁体25の下流側の断面円弧状の環状先端
部25aは、弁本体1の下流側端部の湯水流出口1Bに
形成した環状弁座9に対して開弁状態を維持するよう
に、前記筒状弁体25の上流側内向きフランジ25bと
前記筒状ガイド部材24における外向きフランジ24a
との間に配設される圧縮コイルばねからなるスプリング
26の付勢力にて常時付勢されている。そして、これら
環状弁座9、筒状ガイド部材24、筒状弁体25及びス
プリング26にて第4の弁機構を構成している。
【0027】ところで、第1の開閉弁10を構成する第
1の感熱応動手段としての形状記憶合金ばねの圧縮コイ
ルばねからなる感熱付勢体16は、例えば、混合水Wの
温度が30℃以下では伸長動作することがなく、30℃
以上で急激に伸長動作するように設定されている。ま
た、第2の開閉弁20を構成する第2の感熱応動手段と
しての形状記憶合金ばねの圧縮コイルばねからなる感熱
付勢体23は、例えば、混合水Wの温度が50℃より下
では伸長動作することがなく、50℃以上で急激に伸長
動作するように設定され、50℃より下の温度において
自動的にもとの形状に復帰するように設定されている形
状記憶合金ばねを用いるようにする。
【0028】次に、本発明に係る湯水供給用制御弁の湯
水温度による制御動作を図3から図5に示す図面に基づ
いて説明する。なお、湯水供給経路に混合水Wが流れて
いない場合、あるいは、湯水供給経路内に残留する所定
の設定温度範囲以下の混合水(冷水:例えば30℃以
下)Wが流れる場合のような給湯初期待機時には、図1
に示すように、第1の開閉弁10を構成する第1の弁機
構は開弁状態、第2の弁機構は閉弁状態を維持し、一
方、第2の開閉弁20を構成する第3の弁機構は閉弁状
態、第4の弁機構は開弁状態を維持する。これにより、
所定の設定温度範囲以下の混合水Wは、実線矢印で示す
ように、冷水用ドレーン口3からドレーン管2を介して
弁本体1の外部に排水されるようになっている。
【0029】この状態で、弁本体1の上流側の湯水流入
口1Aから所定の設定温度範囲内の温度(30℃以上)
の混合水Wが流入すると、感熱付勢体16が伸長動作
し、図3に示すように、可動弁体14が下流側に向け強
制的に移動される。そして、可動弁体11が下流側に強
制的に移動すると同時に、筒状可動弁体11がスプリン
グ13の付勢力により下流側に追従移動し、冷水用ドレ
ーン口3を閉弁する。このとき、可動弁体14のフラン
ジ部14aは、スプリング15の付勢力により筒状可動
弁体11の環状弁座11aに対して閉弁状態を維持して
いる。
【0030】そして、冷水用ドレーン口3が筒状可動弁
体11にて閉弁されて、感熱付勢体16が更に伸長動作
すると、筒状可動弁体11は、弁本体1の内周壁面のス
トッパ17に係止し、それ以上の移動が規制されると同
時に、図4に示すように、可動弁体14のみがスプリン
グ15の付勢力に抗して下流側に向け強制的に移動す
る。これにより、可動弁体14のフランジ部14aが筒
状可動弁体11の環状弁座11aから離間するように開
弁動作し、弁本体1の上流側の湯水流入口1Aから流入
する所定の設定温度範囲内の適正温度(30℃以上)の
混合水Wは、図4に実線矢印で示すように、湯水流量調
整板5、第2の開閉弁20の第3の弁機構を構成する可
動弁体21の湯水導入口22を通して弁本体1の湯水流
出口1Bから流出し、図示しないシャワー設備等への給
湯が行われる。
【0031】一方、このような給湯状態において、例え
ば、混合水栓の故障等によって、所定の設定温度以上の
異常高温の温水(熱水:例えば50℃以上)Wが、弁本
体1の湯水流入口1Aから流入すると、図5に示すよう
に、第2の開閉弁20の第3の弁機構を構成する形状記
憶合金ばねの圧縮コイルばねからなる感熱付勢体23が
急激に伸長作動する。そして、この感熱付勢体23の感
熱応動に伴う伸長動作にて、可動弁体21が弁本体1の
下流側に向け移動し、熱水用ドレーン口7を開弁させる
と同時に、第4の弁機構を構成する筒状弁体25は、ス
プリング26の付勢力に抗して弁本体1の下流側に向け
移動し、湯水流出口1Bに形成した環状弁座9を閉弁す
る。これにより、弁本体1の湯水流入口1Aから流入す
る所定の設定温度範囲以上の異常高温の温水Wは、図5
に実線矢印で示すように、熱水用ドレーン口7からドレ
ーン管2を介して弁本体1の外部に排水され、弁本体1
の湯水流出口1Bからの流出を遮断するようになってい
る。
【0032】ところで、図4に示す第1の開閉弁10に
よる適正温度の給湯状態において、弁本体1の上流側の
湯水流入口1Aから所定の設定温度範囲以下の混合水W
が流入したり、あるいは、給湯が停止されて弁本体1内
に残留する混合水Wの温度が所定の設定温度範囲以下に
なった場合には、第1の開閉弁10を構成する感熱付勢
体16が縮小動作し、可動弁体14がスプリング15の
付勢力により上流側に向け移動するとともに、可動弁体
14のフランジ部14aが筒状可動弁体11の端部の環
状弁座11aに当接して閉弁される。これにより、所定
の設定温度範囲以下の混合水Wの下流側への流入を遮断
する。
【0033】そして、感熱付勢体16が更に縮小動作す
ると、可動弁体14もまた上流側に更に移動すると同時
に、筒状可動弁体11をスプリング13の付勢力に抗し
て上流側に向け移動させ、弁孔12を冷水用ドレーン口
3に対応位置させて連通させることにより、冷水用ドレ
ーン口3を開弁させ、図1に示すような給湯初期待機状
態を維持する。
【0034】また、図5に示す異常高温の温水Wの流入
による第2の開閉弁20の遮断状態において、異常高温
の温水Wの流入が停止されて、弁本体1内に流入する混
合水Wが適正温度になった場合には、感熱付勢体23の
感熱応動に伴う縮小動作にて可動弁体21が弁本体1の
上流側に向け移動し、熱水用ドレーン口7を閉弁させる
と同時に、筒状弁体25もまた、スプリング26の付勢
力により弁本体1の上流側に向け移動して、環状弁座9
を開弁する。これにより、図3に示すような適正温度の
給湯状態を可能にしている。
【0035】なお、上記した本発明の実施形態におい
て、第1及び第2の開閉弁20をそれぞれ構成する形状
記憶合金ばねの圧縮コイルばねからなる感熱付勢体1
6,23の作動温度は、使用環境や使用条件によって適
宜に設定される。
【0036】
【発明の効果】以上説明したように、本発明に係る湯水
供給用制御弁は、弁本体の湯水流入口側から流入する混
合水が所定の設定温度範囲内であると、第1の弁機構及
び第2の弁機構が作動し、適正温度の混合水が湯水流出
口側から流出されることから、適正温度の給湯を確実に
行うことができる。
【0037】また、混合水が所定の設定温度範囲以下で
あると、第1の弁機構が開弁状態、第2の弁機構が閉弁
状態を維持し、混合水が上流側ドレーン口から弁本体の
外部に排水されることから、従前のような所定の設定温
度以下の冷水が供給されることがなく、これにより、人
身に不快感を与えることがない。
【0038】一方、混合水が所定の設定温度範囲以上で
あると、第3の弁機構及び第4の弁機構が作動し、混合
水が下流側ドレーン口から弁本体の外部に排水されるこ
とから、従前のような異常高温の温水が湯水流出口側か
ら流出することがなく、これにより、火傷等の重大な危
険性を及ぼす恐れがない。
【0039】さらに、各弁機構の開閉動作が形状記憶合
金ばねの圧縮コイルばねからなる感熱付勢体の混合水の
温度変化に伴う伸長/縮小作用の組合せにて行われるこ
とから、弁機構の即応性を高めることができ、しかも、
弁機構全体構造の簡略化を図ることができるとともに、
誤作動を確実に防止することができる。Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a control valve for supplying hot and cold water installed on a hot water supply path to, for example, a shower facility in a bathroom. The present invention relates to a hot / water supply control valve that can always supply mixed water of cold water within a predetermined set temperature range. 2. Description of the Related Art Generally, in a hot water supply system such as a shower facility, a mixture of hot and cold water from a water heater set to a desired appropriate temperature is supplied through a hot water supply path. [0003] However, in such a conventional hot water supply system, the difference in hot water supply temperature between summer and winter is severe. Particularly in winter, mixed water from the hot water supply system is used. Since the water is cooled while flowing through the hot water supply path and becomes cold water having a temperature equal to or lower than a predetermined set temperature, it may come out of the shower, thereby giving a feeling of discomfort to the human body. In addition, if the mixing of the cold water into the hot water becomes impossible due to a failure of the mixing faucet at the time of the shower, for example, abnormally high temperature hot water at a predetermined temperature or higher may come out of the shower, and thus, a burn or the like may occur. Poses a serious danger. The present invention has been made in view of the above circumstances, and has as its object to provide a hot water supply control valve which can always supply hot water and cold water within a predetermined set temperature range. I do. In order to achieve the above-mentioned object, the present invention is to provide a hot water / cold water mixed water supply path.
And has a hot water inlet 1A at one end and hot water at the other end.
A first on-off valve on the upstream side in a valve body 1 having an outlet 1B.
10 and the second on-off valve 20 on the downstream side are arranged in series,
Due to the mutual operation of the closing valves 10 and 20, mixing within the set temperature range is achieved.
Flow the mixed water to the hot and cold water outlet 1B side, and mix water below the set temperature.
Is the upstream (for cold water) drain opening on the wall of the valve body 1
3 to the drain tube 2 and mix water above the set temperature
Is the downstream (for hot water) drain opened on the wall of the valve body 1
For hot and cold water supply that flows to the drain pipe 2 through the port 7
The first on-off valve 10 on the upstream side, which is a control valve, is a split valve.
The upstream (for cold water) drain port 3 is closed by the ring 13
A first movable valve body 11 urged to open a valve
Valve mechanism and the temperature of mixed water above a predetermined low-level set temperature.
The heat-sensitive urging body 16 responding to the temperature
By extending and overcoming, the movable valve body 11
A movable valve element 14 provided to open a valve seat between
And the temperature of the mixed water below a predetermined low-level set temperature.
Of the heat-sensitive urging member 16 made of a shape memory alloy spring
Spring 15 that overcomes this with the shrinking action
The valve seat between the movable valve body 11 and the cylinder is closed by force,
Can be cylindrical against the spring 13 in conjunction with the valve closing action of
The upstream (for cold water) drain communicating with the drain pipe 2 is connected to the valve train 11
The movable valve element 14 connected to open the lane port 3
And the second valve mechanism thus configured, and the downstream side
The second on-off valve 20 is provided for mixing at a predetermined high level set temperature.
Heat-sensitive biasing of a shape memory alloy spring responsive to water temperature
When the body 23 is extended, the tubular valve body 25 flows out of hot water.
The valve 1B is closed and the downstream side connected to the drain pipe 2 is opened.
(For hot water) the cylindrical valve body 25 for opening the drain port 7;
A third valve mechanism including an integral movable valve body 21 and a predetermined height
Sensitive energizing in response to mixed water temperature below the level set temperature
When the body 23 contracts, the action of the spring 26
The hot water outlet 1B is opened and the movable valve body 2 is opened.
1 so that the downstream (for hot water) drain port 7 is closed.
By a fourth valve mechanism comprising a cylindrical valve body 25 provided on the body
Characterized in that the configuration was. That is, according to the present invention, by adopting the above-described structure, when the mixed water flowing from the hot water inlet side of the valve body is within a predetermined set temperature range, the first valve mechanism and the first valve mechanism are provided. The second valve mechanism is operated, and the mixed water having an appropriate temperature flows out of the hot water outlet. Further, when the mixed water is below the predetermined set temperature range, the first valve mechanism keeps the valve open, the second valve mechanism keeps the valve closed, and the mixed water flows from the upstream drain port to the outside of the valve body. As a result, cold water does not flow out of the hot and cold water outlet side. On the other hand, if the temperature of the mixed water is equal to or higher than the predetermined temperature range, the third valve mechanism and the fourth valve mechanism operate, and the mixed water is discharged from the downstream drain port to the outside of the valve body. In addition, there is no danger that hot water having an abnormally high temperature as in the past flows out of the hot water outlet. Further, since the opening / closing operation of each valve mechanism is performed by a combination of the expansion / contraction action according to the temperature change of the mixed water of the shape memory alloy spring, the responsiveness is improved and the entire valve mechanism is structurally simplified. Become Embodiments of the present invention will be described below in detail with reference to the drawings. FIG. 1 is a cross-sectional view showing the entire configuration of a hot water supply control valve, and FIG. 2 is a plan view. That is, the hot water supply control valve according to the present invention is, for example, a valve body 1 installed on a hot water supply path of a mixed water W of hot water and cold water from a water heater to a shower facility in a bathroom or the like.
And a drainage path connected to a cylindrical drainage receiver 2a having a drainage receiving chamber provided to be fitted and engaged with an engaging groove and an engaging step provided on the outer peripheral surface of the valve body 1 and communicating with the outside. And a drain tube 2 to be formed. The valve body 1 includes an upper cylindrical casing 1C.
And a female screw part on the upper part of the lower cylindrical casing 1D is connected in series with a lower male screw part, and connection screw parts are provided at both ends thereof. 1
A first on-off valve 10 provided on the upstream side, which is opened and closed in accordance with the temperature of the mixed water W flowing from the A side toward the other hot water outlet 1B side, and a second on-off valve provided on the downstream side It has an on-off valve 20. The upstream first opening / closing valve 10 is a drain for chilled water provided in an upper cylindrical casing 1C communicating with a drain pipe 2 connected to an annular drainage receiver 2a provided on an upstream outer peripheral surface of the valve body 1. A first cylindrical movable valve body 11 that opens and closes the port 3, and a valve hole (drain hole) 12 that is opened on a peripheral side surface of the cylindrical movable valve body 11 so as to correspond to the cold water drain port 3.
And a first spring 13 composed of a compression coil spring that constantly biases the cylindrical movable valve body 11 slidably in the axial direction downstream of the valve body 1 (valve closing direction). An annular chamber 3a communicating with the cold water drain port 3 is provided inside the cold water drain port 3, that is, in the circumferential direction of the inner peripheral surface of the upper cylindrical casing 1C. The upstream end of the first spring 13 is supported by an annular annular support member 4 having a plurality of steps having hot and cold water introduction holes 4A. Engages with a ring-shaped stopper 4b which engages with a locking groove provided in the upper casing 1c.
The spring 13 is an inwardly-stepped portion 11 integrally bent and provided below the large-diameter tubular portion 11b of the tubular movable valve body 11.
c. An annular valve seat 1 having a small inner diameter, which is integrally bent and connected to the inward stepped portion 11c and is provided concentrically with the large-diameter cylindrical portion 11b so as to protrude downstream.
1a. A first valve mechanism is constituted by the cylindrical movable valve body 11, the valve hole 12, and the spring 13. The cylindrical movable valve body 11 includes an upper casing 1
c so as to be slidable in the axial direction in a fluid-tight manner on the inner peripheral surface of the cylindrical movable valve body 11 and to engage with the inward step (flange) 11c of the cylindrical movable valve body 11; A valve opening in the cylindrical movable valve body 11 is formed by a spring 13 composed of a compressed coil that engages with the outer flange 4c of the annular support member 4 formed by bending the inner annular flange 4e in a stepwise manner. 12 is constantly urged to be at a position facing the drain port 3. An annular groove 3a is provided on the inner peripheral surface of the upper casing 1c at the same level as the drain port 3 for cold water, and the cylindrical movable valve element 11 is formed by the annular groove 3a.
Is drained from the drain pipe 2 while the valve hole 12 and the annular groove 3a communicate with each other even if the valve rotates horizontally about the axial direction. Further, the peripheral edge portion 11a on the downstream side of the cylindrical movable valve body 11 also serves as an annular valve seat.
A substantially cap-shaped first portion having a large-diameter cylindrical portion 14b integrally formed with the annular flange portion 14a and having a cylindrical head portion 14c having an upstream end closed at the inside thereof. Is inserted from the downstream side.
An annular flange portion 14a formed on the downstream peripheral edge of the movable valve body 14 is formed so as to be able to contact and separate from the annular valve seat 11a.
Is loosely fitted in the central through hole. Further, a second spring 15 having a larger biasing force (spring constant) than the first spring 13 is inserted concentrically from the downstream side into the movable valve body 14, and the upper end thereof is formed. The movable valve element 14 is engaged with an intermediate annular flange at the lower end of the head. The second spring 15 has a disk-like shape having a hole for introducing hot and cold water, the downstream end of which is engaged with an inward step on the downstream side (lower end) of the upper casing 1 </ b> C in the valve body 1. While being engaged with the support plate 5, it is fitted and held on the head of the holding member 6 fixed to the support plate 5, and constantly biases the movable valve body 14 in the axial direction on the upstream side. Flange (valve) 14a
Is brought into contact with the annular valve seat 11a to maintain the valve closed state. The support plate 5 is
The upper casing 1C is always in the downstream direction by the movable valve element 14, the first cylindrical movable valve element 11, and the spring 15 which is indirectly engaged with the support member 4 via the spring 13.
, And does not move upstream. The spring constant of the spring 15 is set to be larger than the spring constant of the spring 13 arranged in the compressed state. Further, between the base side of the annular flange portion 14a of the movable valve body 14 and the intermediate annular flange 4d of the annular support member 4, a compression coil 16 of a shape memory alloy spring as a first heat-sensitive responsive means is provided. And the movable valve element 14 can be moved downstream against the urging force of the second spring 15 by the extension operation accompanying the heat-sensitive response of the heat-sensitive urging element 16. It is to be energized. Also, the upstream drain port 3 is closed by the spring 13 moving the first tubular movable valve body 11 in the downstream direction together with the movement of the movable valve body 14 in the downstream direction. The annular valve seat 11a, the movable valve body 14,
Flange 14a, spring 15 and heat-sensitive urging body 16
Constitutes a second valve mechanism. In this case, the range of movement of the tubular movable valve element 11 to the downstream side is regulated by, for example, a stopper 17 formed of an inwardly projecting step formed on the inner peripheral wall surface of the valve body 1. Until the body 11 comes into contact with the stopper 17, the cylindrical movable valve body 11 and the movable valve body 14 engage with each other in the closed state of the annular valve seat 11a and the flange portion 14a, which are the engagement portions thereof. Hold and move together downstream. That is, the heat-sensitive urging member 16 of the second valve mechanism
In the hot water supply initial standby state, the spring 15 is connected to the cold water drain port 3 communicating with the drain pipe 2 provided on the peripheral side surface of the valve body 1 so that the valve hole 12 of the cylindrical movable valve body 11 corresponds to the spring 15. Positioning is performed by a balance relationship with the spring 13. Thus, the first valve mechanism maintains the open state of the cold water drain port 3. On the other hand, the second on-off valve 20 is provided with a hot water drain port 7 communicating with the drain pipe 2 provided on the downstream side of the valve body 1.
And a second cylindrical movable valve body 21 that can close the valve. The second cylindrical movable valve body 21 has a form of a two-stage wide and narrow cylindrical body, and the outermost large-diameter cylindrical part 21a is provided with a liquid in the axial direction on the inner peripheral surface of the lower casing 1D. An inwardly-facing annular flange 21b is integrally bent and formed at an intermediate portion of the tubular movable valve body 21, and a small-diameter tubular portion is integrally formed on an inner diameter side of the inwardly-facing annular flange 21b. The small-diameter cylindrical portion 21c has an annular flange 21d integrally bent inward at a downstream end thereof, and a coil-shaped shape memory alloy spring is formed on the upper surface of the annular flange 21d. The lower part of the heat-sensitive urging element 23 formed of a compression spring is engaged, and the upper part of the heat-sensitive urging element 23 is concentrically arranged at the inner middle part of the cylindrical valve element 1. It is engaged with a bearing flange 8 a of the support member 8. When the mixed water of a predetermined temperature or more flows in by the heat-sensitive urging element 23 made of the shape memory alloy spring, the cylindrical valve element 25 engaged with the annular flange 21d.
Is seated and closed with the annular lower end thereof pressed against the annular valve seat 9 of the lower casing 1D. A hot water inlet 22 communicating with a hot water outlet 1B at the downstream end of the valve body 1 is provided on the inward annular flange 22b of the second cylindrical movable valve body 21 at circumferential intervals. I have. The movable valve element 21 is provided in the lower casing 1.
D is slidably fitted on the inner peripheral surface of the intermediate portion of D in a liquid-tight manner, and the upper end portion of the movable valve body 21 is engaged with the lower end surface of the upper casing 1C, so that it is prevented from moving in the upstream direction, The distal end of the tubular valve body 25 is set to be seated on the annular valve seat 9 before the lower surface of the annular flange 21b engages with the intermediate inward step 27 of the lower casing 1D. A plurality of downstream drain ports (hot water drain ports) 7 are provided on the peripheral wall of the lower casing 1D near the lower surface of the joint with the upper casing 1C at intervals in the circumferential direction.
Is provided at a position close to the lower end surface of the upper casing 1C. Therefore, immediately after the cylindrical movable valve element 21 is separated from the lower surface of the upper casing 1C, the high-temperature mixed water having a predetermined temperature or higher can be drained from the downstream drain port 7 communicating with the outside. One end surface of a cylindrical support member 8 is fixed to the downstream side of the support plate 5 having the hot and cold water supply holes by welding or the like, and an annular support projecting radially outward on the downstream side of the cylindrical support member 8. A flange 8a is provided, and the bearing flange 8 is provided.
A heat-sensitive urging element 23 as a heat-sensitive responsive means composed of a compression spring 23 of a shape memory alloy spring is provided between a and the inward annular flange 21d of the cylindrical movable valve element 21. That is, a shape memory as a heat-sensitive responsive means is assembled via a flanged cylindrical support member 8 in which one end of the movable valve body 21 is fixed to the lower surface of the support plate 5 having a hot water supply hole by welding or the like. The extension of the heat-sensitive urging element 23 made of a compression coil spring made of an alloy spring accompanying the heat-sensitive response is slidably urged in the valve opening direction along the axial direction of the valve body 1. The annular valve seat 9 is closed by moving the cylindrical valve body 25 in the downstream direction. The movable valve body 21 and the hot water inlet 22
The heat-sensitive urging element 23 constitutes a third valve mechanism. Further, the second on-off valve 20 has one end fixed to the cylindrical support member 8 or the holding member 6 by welding or the like, and extends in the axial direction on the downstream side of the valve body 1.
4 A cylindrical valve element 25 that can slide relatively liquid-tight in the axial direction of the valve main body 1 in coordination with the elongating operation accompanying the heat-sensitive response of the heat-sensitive urging element 23 is inserted into the cylindrical guide member 24. The annular distal end portion 25a having an arc-shaped cross section on the downstream side of the cylindrical valve body 25 is opened with respect to the annular valve seat 9 formed at the hot and cold water outlet 1B at the downstream end portion of the valve body 1. The upstream inward flange 25b of the cylindrical valve body 25 and the outward flange 24a of the cylindrical guide member 24 are maintained.
And is constantly urged by the urging force of a spring 26 formed of a compression coil spring disposed between them. The annular valve seat 9, the cylindrical guide member 24, the cylindrical valve body 25, and the spring 26 constitute a fourth valve mechanism. By the way, the heat-sensitive urging body 16 composed of a compression coil spring of a shape memory alloy spring as the first heat-sensitive responsive means constituting the first on-off valve 10 is, for example, in a case where the temperature of the mixed water W is 30 ° C. or less. 30 ° C
As described above, it is set so that the extension operation is performed rapidly. Further, the heat-sensitive urging element 23 composed of a compression coil spring of a shape memory alloy spring as the second heat-sensitive responsive means constituting the second on-off valve 20 extends, for example, when the temperature of the mixed water W is lower than 50 ° C. Use a shape memory alloy spring that is set so that it does not operate, and that suddenly expands at a temperature of 50 ° C. or higher, and automatically returns to its original shape at a temperature lower than 50 ° C. To Next, the control operation of the hot water supply control valve according to the present invention based on the hot water temperature will be described with reference to the drawings shown in FIGS. Note that when the mixed water W is not flowing in the hot water supply path, or when the mixed water (cool water: for example, 30 ° C. or less) W remaining in the hot water supply path and having a predetermined temperature range or less flows, the initial state of hot water supply is assumed. Fig. 1
As shown in FIG. 1, the first valve mechanism that constitutes the first on-off valve 10 keeps the valve open and the second valve mechanism keeps the valve closed, while the third valve that makes up the second on-off valve 20 The fourth valve mechanism maintains the valve closed state, and the fourth valve mechanism maintains the valve open state. This allows
Mixed water W having a temperature equal to or lower than a predetermined set temperature range is drained from the cold water drain port 3 to the outside of the valve body 1 through the drain pipe 2 as indicated by a solid arrow. In this state, the temperature within a predetermined set temperature range (30 ° C. or higher) from the hot water inlet 1 A on the upstream side of the valve body 1.
When the mixed water W flows in, the heat-sensitive urging body 16 extends and the movable valve body 14 is forcibly moved downstream as shown in FIG. Then, at the same time that the movable valve body 11 is forcibly moved to the downstream side, the cylindrical movable valve body 11 follows the downstream side by the urging force of the spring 13 to close the chilled water drain port 3. At this time, the flange portion 14a of the movable valve body 14 maintains a closed state with respect to the annular valve seat 11a of the cylindrical movable valve body 11 by the urging force of the spring 15. When the cold water drain port 3 is closed by the cylindrical movable valve body 11 and the heat-sensitive urging body 16 further extends, the cylindrical movable valve body 11 is moved to the inner peripheral wall surface of the valve body 1. At the same time, the movable valve element 14 is forcibly moved downstream against the urging force of the spring 15, as shown in FIG. . Thereby, the valve opening operation is performed so that the flange portion 14a of the movable valve body 14 is separated from the annular valve seat 11a of the cylindrical movable valve body 11, and a predetermined setting that flows in from the hot water inlet 1A on the upstream side of the valve body 1. The mixed water W at an appropriate temperature (30 ° C. or higher) within the temperature range is supplied to the movable valve constituting the third valve mechanism of the hot water flow rate adjusting plate 5 and the second on-off valve 20 as shown by the solid arrow in FIG. The hot water flows out of the hot water outlet 1B of the valve body 1 through the hot water inlet 22 of the body 21, and hot water is supplied to shower equipment (not shown). On the other hand, in such a hot water supply state, due to, for example, failure of the mixing faucet, abnormally high temperature hot water (hot water: for example, 50 ° C. or more) W equal to or higher than the predetermined set temperature is caused by the hot and cold water When flowing from the inlet 1A, as shown in FIG. 5, the heat-sensitive urging member 23 formed of a compression coil spring of a shape memory alloy spring constituting the third valve mechanism of the second on-off valve 20 rapidly expands. The movable valve element 21 moves toward the downstream side of the valve main body 1 by the extension operation accompanying the heat-sensitive response of the heat-sensitive urging element 23 to open the hot water drain port 7, and at the same time, to perform the fourth operation. The cylindrical valve body 25 constituting the valve mechanism moves toward the downstream side of the valve body 1 against the urging force of the spring 26, and closes the annular valve seat 9 formed at the hot and cold water outlet 1B. As a result, the abnormally high-temperature hot water W that flows in from the hot water inlet 1A of the valve body 1 and has a temperature equal to or higher than a predetermined set temperature range is used as shown in FIG.
As shown by a solid line arrow, the water is drained from the hot water drain port 7 to the outside of the valve body 1 through the drain pipe 2, and the valve body 1
Out of the hot water outlet 1B. By the way, in the hot water supply state at an appropriate temperature by the first on-off valve 10 shown in FIG. 4, the mixed water W having a predetermined temperature range or less is supplied from the hot water inlet 1A on the upstream side of the valve body 1.
When the temperature of the mixed water W remaining in the valve body 1 falls below a predetermined set temperature range due to inflow of hot water or the stop of hot water supply, the heat-sensitive energizing The body 16 is contracted, the movable valve body 14 moves toward the upstream side by the urging force of the spring 15, and the flange portion 14a of the movable valve body 14 is connected to the annular valve seat 11a at the end of the cylindrical movable valve body 11. The valve is closed upon contact. Thereby, the inflow of the mixed water W below the predetermined set temperature range to the downstream side is blocked. When the heat-sensitive urging element 16 further contracts, the movable valve element 14 also moves further upstream, and at the same time, the cylindrical movable valve element 11 is directed upstream against the urging force of the spring 13. The cold water drain port 3 is opened by moving the valve hole 12 so as to correspond to the cold water drain port 3, thereby maintaining the hot water supply initial standby state as shown in FIG. In the shut-off state of the second on-off valve 20 due to the inflow of the abnormally high temperature hot water W shown in FIG. 5, the inflow of the abnormally high temperature hot water W is stopped, and the mixed water W flowing into the valve body 1 is stopped. When the temperature has reached an appropriate temperature, the movable valve element 21 moves toward the upstream side of the valve body 1 by the contraction operation accompanying the heat-sensitive response of the heat-sensitive urging element 23, and closes the hot water drain port 7. At the same time, the cylindrical valve body 25 also moves toward the upstream side of the valve body 1 by the urging force of the spring 26, and
Is opened. This enables a hot water supply state at an appropriate temperature as shown in FIG. In the above-described embodiment of the present invention, the heat-sensitive urging element 1 composed of a compression coil spring of a shape memory alloy spring constituting the first and second on-off valves 20 respectively.
The operating temperatures 6 and 23 are appropriately set depending on the use environment and use conditions. As described above, the hot / water supply control valve according to the present invention has the first configuration in which the mixed water flowing from the hot water inlet side of the valve body is within a predetermined set temperature range. The valve mechanism and the second valve mechanism are operated, and the mixed water at the appropriate temperature flows out of the hot water outlet, so that the hot water supply at the appropriate temperature can be reliably performed. When the temperature of the mixed water is lower than the predetermined temperature range, the first valve mechanism maintains the open state, the second valve mechanism maintains the closed state, and the mixed water flows through the upstream drain port from the upstream drain port. Since the water is drained to the outside of the main body, cold water having a temperature equal to or lower than a predetermined set temperature as in the past is not supplied, and therefore, no discomfort is given to the human body. On the other hand, if the temperature of the mixed water is higher than the predetermined temperature range, the third valve mechanism and the fourth valve mechanism are operated, and the mixed water is discharged from the downstream drain port to the outside of the valve body. Therefore, the abnormally high temperature hot water does not flow out from the hot water outlet side as before, and there is no danger of causing serious danger such as burns. Further, since the opening and closing operation of each valve mechanism is performed by a combination of the expansion / contraction action of the heat-sensitive urging member composed of the compression coil spring of the shape memory alloy spring due to the temperature change of the mixed water, Responsiveness, and
While simplifying the overall structure of the valve mechanism,
Malfunction can be reliably prevented.
【図面の簡単な説明】
【図1】同じく湯水供給用制御弁の給湯初期待機時にお
ける閉弁形態を示す縦断側面図である。
【図2】本発明に係る湯水供給用制御弁の一実施形態を
示す平面図である。
【図3】同じく湯水供給用制御弁の温水流入時の作動途
中状態を示す縦断側面図である。
【図4】同じく湯水供給用制御弁の適正温度の給湯状態
を示す縦断側面図である。
【図5】同じく湯水供給用制御弁の熱水流入時の作動状
態を示す縦断側面図である。
【符号の説明】
1 弁本体
1A 湯水流入口
1B 湯水流出口
1C 上部筒状ケーシング
1D 下部筒状ケーシング
2 ドレーン管
2a 筒状排水受
3 上流側ドレーン口(冷水用ドレーン口)
3a 環状室
4 環状支持部材
4A 湯水導入孔
4c 外側環状フランジ
4d 中間部環状フランジ
4e 内側環状フランジ4d
5 湯水流量調整板
6 保持部材
7 下流側ドレーン口(熱水用ドレーン口)
8 筒状支持部材
8a 支承フランジ
9 環状弁座
10 第1の開閉弁
11 第1の筒状可動弁体
11a 環状弁座
11c 内向き段部(フランジ)
12 弁孔
13 スプリング
14 可動弁体
14a フランジ部
15 スプリング
16 第1の感熱付勢体
17 ストッパ
20 第2の開閉弁
21 第2の筒状可動弁体
21a 大外径の筒状部
21b 内向き環状フランジ
21c 小径筒状部分
21d 環状フランジ
22 湯水導入口
23 第2の感熱付勢体
24 筒状ガイド部材
25 筒状弁体
26 スプリング
27 中間部内向き段部
W 混合水BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a vertical sectional side view showing a valve closing state of a hot water supply control valve in a hot water supply initial standby state. FIG. 2 is a plan view showing an embodiment of a hot water supply control valve according to the present invention. FIG. 3 is a vertical sectional side view showing a state in which the hot / water supply control valve is in the middle of operation when hot water is supplied. FIG. 4 is a vertical sectional side view showing a hot-water supply state of the hot-water supply control valve at an appropriate temperature. FIG. 5 is a vertical sectional side view showing an operating state of the hot water supply control valve when hot water flows in the same. [Description of Signs] 1 Valve body 1A Hot and cold water inlet 1B Hot and cold water outlet 1C Upper cylindrical casing 1D Lower cylindrical casing 2 Drain pipe 2a Cylindrical drainage receiver 3 Upstream drain port (cold water drain port) 3a Annular chamber 4 Annular Support member 4A Hot water introduction hole 4c Outer annular flange 4d Intermediate annular flange 4e Inner annular flange 4d 5 Hot water flow rate adjusting plate 6 Holding member 7 Downstream drain port (drain port for hot water) 8 Cylindrical support member 8a Bearing flange 9 Ring Valve seat 10 First on-off valve 11 First cylindrical movable valve body 11a Annular valve seat 11c Inward step (flange) 12 Valve hole 13 Spring 14 Movable valve body 14a Flange part 15 Spring 16 First heat-sensitive urging Body 17 Stopper 20 Second on-off valve 21 Second cylindrical movable valve body 21a Large-diameter cylindrical part 21b Inwardly-facing annular flange 21c Small-diameter cylindrical Min 21d annular flange 22 the hot water inlet port 23 and the second heat sensitive biasing member 24 the tubular guide member 25 the tubular valve body 26 a spring 27 intermediate portion facing stepped portion W mixed water
Claims (1)
され、一端側に湯水流入口1Aを有し、他端側に湯水流
出口1Bを有する弁本体1内に、上流側の第1開閉弁1
0と下流側の第2開閉弁20を直列的に配設し、両開閉
弁10、20の相互動作により、設定温度範囲内の混合
水を湯水流出口1B側に流し、設定温度以下の混合水は
弁本体1の壁に開設した上流側(冷水用)ドレーン口3
を通してドレーン管2に流し、設定温度以上の混合水
は、弁本体1の壁に開設した下流側(熱水用)ドレーン
口7を通してドレーン管2に流すようにした湯水供給用
制御弁であって、 上流側の第1の開閉弁10は、 スプリング13により前記上流側(冷水用)ドレーン口
3を閉弁するように付勢された筒状可動弁体11からな
る第1の弁機構と、 所定の低レベル設定温度以上の混合水の温度に感応する
感熱付勢体16がスプリング15の作用に打ち勝って伸
長動作することで、筒状可動弁体11との間の弁座を開
くように設けられた可動弁体14であって、さらに、所
定の低レベル設定温度以下の混合水の温度による、形状
記憶合金ばねからなる感熱付勢体16の縮小動作に伴
い、これに打ち勝つスプリング15の弾発力で筒状可動
弁体11との間の弁座を閉じると共に、その閉弁動作に
連動して、スプリング13に抗して筒状可動弁体11に
ドレーン管2に通じる上流側(冷水用)ドレーン口3を
開弁させるように連設した可動弁体14によって構成さ
れた第2の弁機構とから構成し、 下流側の第2の開閉弁20は、 所定の高レベル設定温度上の混合水の温度に感応する形
状記憶合金ばねからなる感熱付勢体23が伸長動作する
ことで、筒状弁体25が湯水流出口1Bを閉弁すると共
に、ドレーン管2に通じる下流側(熱水用)ドレーン口
7を開弁する前記筒状弁体25と一体の可動弁体21か
らなる第3の弁機構と、 所定の高レベル設定温度以下の混合水の温度に感応して
感熱付勢体23が縮小動作することで、スプリング26
の作用により湯水流出口1Bを開弁すると共に、前記可
動弁体21が下流側(熱水用)ドレーン口7を閉弁する
ように一体に設けた筒状弁体25からなる第4の弁機構
によって構成した ことを特徴とする湯水供給用制御弁。(57) [Claims] [Claim 1] Installed on a mixed water supply path of hot water and cold water
Has a hot water inlet 1A at one end and a hot water inlet at the other end.
A first on-off valve 1 on the upstream side is provided in a valve body 1 having an outlet 1B.
0 and the second on-off valve 20 on the downstream side are arranged in series,
Mixing within the set temperature range by the mutual operation of the valves 10 and 20
Flow the water to the hot water outlet 1B side, and mix water below the set temperature.
Upstream (for cold water) drain port 3 opened on the wall of valve body 1
Through the drain pipe 2 and mix water above the set temperature
Is the downstream (for hot water) drain opened on the wall of the valve body 1
For hot and cold water supply that flows to the drain pipe 2 through the port 7
A control valve, wherein the upstream first open / close valve 10 is connected to the upstream (for cold water) drain port by a spring 13.
3 from the cylindrical movable valve body 11 urged to close the valve.
A first valve mechanism that is sensitive to the temperature of the predetermined low level set temperature or more mixing water
The heat-sensitive urging element 16 overcomes the action of the spring 15 and extends.
By long operation, the valve seat between the cylindrical movable valve element 11 is opened.
The movable valve body 14 is provided so that
Shape due to mixed water temperature below a certain low level set temperature
As the heat-sensitive urging element 16 made of a memory alloy spring is contracted,
It can be moved in a cylindrical shape by the spring force of the spring 15 that overcomes this.
While closing the valve seat between the valve body 11 and the valve closing operation
In conjunction therewith, the cylindrical movable valve body 11 is
Connect the upstream (for cold water) drain port 3 to the drain pipe 2
It is constituted by a movable valve body 14 connected so as to open the valve.
Which was formed from the second valve mechanism, the second on-off valve 20 on the downstream side, the shape sensitive to the temperature of the mixed water on the predetermined high level setting temperature
The heat-sensitive urging member 23 made of a shape memory alloy spring performs an extension operation.
Thus, when the cylindrical valve body 25 closes the hot and cold water outlet 1B,
At the downstream (for hot water) drain port leading to the drain pipe 2
The movable valve element 21 integral with the cylindrical valve element 25 that opens the valve 7
A Ranaru third valve mechanism, and responsive to a predetermined temperature of the high level setting temperature following mixed water
When the heat-sensitive urging element 23 is contracted, the spring 26
The hot water outlet 1B is opened by the action of
The valve body 21 closes the downstream (for hot water) drain port 7.
Valve mechanism composed of a cylindrical valve body 25 integrally provided as described above
A hot and cold water supply control valve characterized by comprising:
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000149492A JP3482376B2 (en) | 2000-05-22 | 2000-05-22 | Hot water supply control valve |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2000149492A JP3482376B2 (en) | 2000-05-22 | 2000-05-22 | Hot water supply control valve |
Publications (2)
Publication Number | Publication Date |
---|---|
JP2001330170A JP2001330170A (en) | 2001-11-30 |
JP3482376B2 true JP3482376B2 (en) | 2003-12-22 |
Family
ID=18655344
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
JP2000149492A Expired - Fee Related JP3482376B2 (en) | 2000-05-22 | 2000-05-22 | Hot water supply control valve |
Country Status (1)
Country | Link |
---|---|
JP (1) | JP3482376B2 (en) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
JP4919772B2 (en) * | 2006-11-16 | 2012-04-18 | 株式会社Lixil | Hot water mixing valve with automatic temperature control function |
-
2000
- 2000-05-22 JP JP2000149492A patent/JP3482376B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
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JP2001330170A (en) | 2001-11-30 |
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