JP4636424B2

JP4636424B2 - Flush toilet

Info

Publication number: JP4636424B2
Application number: JP2001072489A
Authority: JP
Inventors: 剛清水; 信次柴田; 新川　　真弘; 光宏末永; 秀峰宮原
Original assignee: Toto Ltd
Current assignee: Toto Ltd
Priority date: 2001-03-14
Filing date: 2001-03-14
Publication date: 2011-02-23
Anticipated expiration: 2021-03-14
Also published as: JP2002276005A

Description

【０００１】
【発明の属する技術分野】
本発明は、水洗式便器のトラップ部およびジェット部の改良に関する。
【０００２】
【従来の技術】
従来のサイホンジェット式便器は、ジェット部のジェット孔から洗浄水をトラップ部の上昇管路に向けて噴射して、トラップ部にサイホン作用を発生させて、ボウル部の汚物や汚水をトラップ部の下降管路へ排出させる。これをサイホン誘発作用と呼ぶことにする。
そして、サイホン誘発作用後には、ボウル部の底部に残留した浮遊汚物などを含む汚水をジェット孔から噴射させた洗浄水で巻き込んでトラップ部に排出させる。これを残留汚水排出作用と呼ぶことにする。
このように、従来のサイホンジェット式便器は、ジェット部にサイホン誘発作用および残留汚物排出作用の二つの作用をもたせていた。
【０００３】
【発明が解決しようとする課題】
しかし、従来のサイホンジェット式便器は、残留汚水排出作用時に、▲１▼ジェット孔から噴射した洗浄水がトラップ部に衝突する際、および▲２▼トラップ部に衝突した後にジェット部の近傍まで戻ってくる洗浄水である返り水をジェット部で巻き込む際、に大きな騒音を発生していた。
そして、衝突時の騒音は、ジェット孔からの洗浄水噴射を乱れの少ない整流に近づける整流化噴射をしたほうが低減できるが、整流化噴射した洗浄水は衝突後にトラップ部の内壁に沿って流れるために、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後にジェット部の近傍に戻る洗浄水である返り水の量が比較的多くなり、その結果として巻き込み時の騒音が大きかった。
本発明は、このような課題を解決するためになされたもので、その目的は、サイホン作用発生能力を低下させることなく、サイホン作用発生後の残留汚水排出作用時の騒音を低減させる水洗式便器を提供するものである。
【０００７】
【課題を解決するための手段およびその作用・効果】
請求項１記載の水洗式便器は、汚物を受けるボウル部の底部に形成された排出口に連通して斜め上方に向かう上昇管路部と、前記上昇管路部を通過した洗浄水を外部の排出管に導くために前記上昇管路部の頂上部から下流側に向かって下方に屈曲した下流管路部とから成るトラップ部と、前記上昇管路部の下流側に向かって洗浄水を噴射するジェット孔を有するジェット部と、を備えた水洗式便器において、
前記ジェット孔から噴射した洗浄水のうちで前記トラップ部に衝突した後に前記排出口に向かう洗浄水の流れを阻害するために前記上昇管路部の頂上部またはその近傍の内壁に設けられた段部で形成される返り水阻害手段を有し、
前記段部は、前記トラップ部の円周方向の内壁に沿って略逆Ｕ字状に内壁から突出して設けられた突起によって形成されていることを特徴とする。本発明によれば、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後に、扇形状に広がりトラップ部の内壁に沿って流れて排出口に向かう洗浄水である返り水を、トラップ部の内壁に略逆Ｕ字状に設けた突起に衝突させることによって、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。また、略逆Ｕ字状に突起を設けることで、トラップ部の流路の断面積の変化を少なくすることができ、サイホン作用発生時において、サイホン作用の発生を妨げることを少なくすることができる。
【０００８】
また、請求項２記載の水洗式便器は、請求項１記載の水洗式便器において、前記突起の下流側の立壁である第一立壁を、前記突起の下流側のトラップ部の内壁との角度が９０度以下となるよう形成されていることを特徴とする。本発明によれば、突起の下流側の立壁である第一立壁を、前記突起の下流側のトラップ部の内壁との角度が９０度以下に形成することで、返り水が突起を乗り越えて排出口に達することを防ぐことができ、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。
【０００９】
また、請求項３記載の水洗式便器は、請求項１または２記載の水洗式便器において、前記突起の上流側の立壁である第二立壁の長さが、前記第一立壁の長さの２倍以上であることを特徴とする。本発明によれば、排出口から突起の第一立壁までの流路の断面積を緩やかに変化させることができ、サイホン作用発生時において、汚物や汚水の流れが突起によって妨げられることを少なくすることができる。
【００１０】
また、請求項４記載の水洗式便器は、請求項１から３のいずれか記載の水洗式便器において、前記突起をトラップ部とは別体として備えることを特徴とする。本発明によれば、陶器製である便器本体のトラップ部については単純な管路を有するだけの形状にできるので、便器本体にあっては既存のものをそのまま利用でき、製造上有益である。また、別体とする突起は、陶器製であってもよいし、樹脂等の別部材から形成したものでもよい。
【００１２】
また、請求項５記載の水洗式便器は、汚物を受けるボウル部の底部に形成された排出口に連通して斜め上方に向かう上昇管路部と、前記上昇管路部を通過した洗浄水を外部の排出管に導くために前記上昇管路部の頂上部から下流側に向かって下方に屈曲した下流管路部とから成るトラップ部と、前記上昇管路部の下流側に向かって洗浄水を噴射するジェット孔を有するジェット部と、を備えた水洗式便器において、
前記ジェット孔から噴射した洗浄水のうちで前記トラップ部に衝突した後に前記排出口に向かう洗浄水の流れを阻害するために前記上昇管路部の頂上部またはその近傍の内壁に設けられた段部で形成される返り水阻害手段を有し、前記段部は、前記上昇管路部の頂上部において流路の断面積が小さい上昇管路部と断面積が大きい下降管路部とを連結する連結部に前記トラップ部の円周方向の内壁に沿って略逆Ｕ字状に設けられていることを特徴とする。本発明によれば、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後に、扇形状に広がりトラップ部の内壁に沿って流れて排出口に向かう洗浄水である返り水を、トラップ部の内壁に略逆Ｕ字状に設けた連結部に衝突させることによって、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。また、略逆Ｕ字状に連結部を設けることで、トラップ部の流路の断面積の変化を少なくすることができ、サイホン作用発生時において、サイホン作用の発生を妨げることを少なくすることができる。
【００１３】
また、請求項６記載の水洗式便器は、請求項５記載の水洗式便器において、前記連結部を、前記連結部の下流側のトラップ部の内壁との角度が９０度以下となるよう形成されていることを特徴とする。本発明によれば、連結部を、連結部の下流側のトラップ部の内壁との角度が９０度以下に形成して設けることによって、返り水が連結部を乗り越えて排出口に達することを防ぐことができ、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。
【００１５】
また、請求項７記載の水洗式便器は、請求項１から６のいずれか記載の水洗式便器において、前記段部に衝突した洗浄水を前記下流管路部に誘導する誘導手段を、前記段部に連結して設けたことを特徴とする。本発明によれば、段部に連結して設けた誘導手段によって段部に衝突した洗浄水を効率的に下流管路部に誘導することができ、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。
【００１６】
また、請求項８記載の水洗式便器は、請求項７記載の水洗式便器において、前記誘導手段は、前記段部に衝突した洗浄水を前記トラップ部の円周方向の内周に沿って流す棚部を設けたことを特徴とする。本発明によれば、段部に衝突した洗浄水を、段部に連結して設けた棚部に流すことができ、効率的に下流管路部に誘導することができ、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。
【００１７】
また、請求項９記載の水洗式便器は、請求項８記載の水洗式便器において、前記棚部には、その端部からトラップ部の内壁方向へ突出する縁部を設けたことを特徴とする。本発明によれば、棚部を流れる洗浄水を、縁部を設けた棚部から落ちることなく流すことができ、効率的に下流管路部に誘導することができ、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。
【００１８】
また、請求項１０記載の水洗式便器は、請求項７記載の水洗式便器において、前記誘導手段は、前記段部に衝突した洗浄水を流す通路部を、前記ジェット孔から噴射した洗浄水が衝突するトラップ部の内壁より外側に設けたことを特徴とする。本発明によれば、段部に衝突した洗浄水を、トラップ部の内壁より外側に設けた通路部に流すことで、下流管路部に誘導することができ、排出口に向かう返り水の量を効率良く低減することができ、ジェット孔から噴射した洗浄水が、ジェット孔近傍に滞留した汚水を含む洗浄水や返り水を巻き込む際の巻き込み音を低減させることができる。また、通路部をジェット孔から噴射した洗浄水が衝突するトラップ部の内壁より外側に設けるので、サイホン作用発生時において、汚物や汚水の流れを妨げることを少なくすることができる。
【００１９】
また、請求項１１記載の水洗式便器は、請求項１から１０のいずれか記載の水洗式便器において、前記下流管路部は、前記段部を含む下降管路部分を別体として備え、前記別体の下降管路部分を前記上昇管路部の一端に装着して形成したことを特徴とする。本発明によれば、陶器製である便器本体のトラップ部については単純な管路を有するだけの形状にできるので、便器本体にあっては既存のものをそのまま利用でき、製造上有益である。また、別体とする下降管路部は、陶器製であってもよいし、樹脂等の別部材から形成したものでもよい。
【００２５】
【発明の実施の形態】
以下、図面にそって本発明に係る実施例を説明する。
図１は、本発明の残留汚水排出作用時の騒音を低減する機構を設けたサイホンジェット式便器の一実施形態を示す縦断面の説明図である。
【００２６】
図１において、サイホンジェット式便器１は、ボウル部２とトラップ部３とジェット部４を有する。
トラップ部３は、ボウル部２の底部に形成された排出口５に連通して上昇管路を有する上昇管路部６と、上昇管路部６を通過した洗浄水を外部の排出管に導くために、上昇管路の頂上部７から下流側に向かって下方に屈曲した下降管路を有する下流管路部８とを連結してなる。
給水管９は分岐してリム給水制御部１０およびジェット給水制御部１１の一端に接続し、リム給水制御部１０の他端はリム給水管１２を介してリム通水路１３へ接続する。ジェット制御部１１の他端はジェット給水管１４を介して、ボウル部２の底部に設けられたジェット部４へ接続する。
【００２７】
また、リム給水制御部１０とジェット制御部１１に起動入力を与える操作部１５を備える。
操作部１５からの起動入力信号が与えられるとリム給水制御部１０を開弁状態に駆動する。これにより、洗浄水がリム給水管１２を介してリム通水路１３からボウル部２へ供給され、ボウル部２の壁面を洗浄する。
所定時間経過後、リム給水制御部１０を閉弁状態に駆動するとともに、ジェット給水制御部１１を開弁状態に駆動する。これにより洗浄水がジェット給水管１４を介してジェット部４のジェット孔１６からトラップ部３へ向けて噴射される。この洗浄水は頂上部７を超えて下流管路部８へ流れ、さらに流出口１７から排出されるが、この際トラップ部３に生じる負圧によってトラップ部３内にサイホン状態が発生し、ボウル部２内の汚物・汚水の排出が開始される。このサイホン状態は封水面が隔壁１８の下端１８ａより低下しトラップ部３内へ空気が流入した時点で終了する。
【００２８】
サイホン状態が停止した後においては、ボウル部２の底部に残留した浮遊汚物などを含む汚水をジェット孔１６から噴射させた洗浄水で巻き込んでトラップ部３に排出する。ジェット孔１６から噴射した洗浄水の流れを模式的に矢印で示す。
この残留汚水排出作用時には、主に▲１▼ジェット孔から噴射した洗浄水がトラップ部に衝突する際、および▲２▼トラップ部に衝突した後にジェット部の近傍まで戻ってくる洗浄水である返り水をジェット部で巻き込む際、に騒音を発生する。
ジェット孔１６から噴射する洗浄水を整流する整流手段をジェット部４に設けて、衝突時の騒音を低減する。
また、ジェット孔１６から噴射した洗浄水のうちでトラップ部３に衝突した後に排出口５に向かう洗浄水の流れを阻害する返り水阻害手段をトラップ部３に設けて、巻き込み時の騒音を低減する。
【００２９】
本実施例では、返り水阻害手段として、ジェット孔１６から噴射した洗浄水が衝突するトラップ部３より上流側であり、かつ頂上部７の近傍であるトラップ部３の内壁に段部１９を設ける。これにより、ジェット孔１６から噴射した洗浄水のうちでトラップ部３に衝突した後にトラップ部３の内壁に沿って排出口５に向かう洗浄水を段部１９に衝突させて、下流管路部８に排出することができ、ジェット部４の近傍まで戻ってくる返り水の量を低減して、巻き込み時の騒音を低減する。
これにより、残留汚水排出作用時の騒音を著しく低減することができる。
なお、図１においては、床排水式便器における一実施形態を説明したが、図２のような壁排水式便器でも構わない。
【００３０】
本発明の返り水量低減用の突起を略環状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図を図３に示し、縦断面図とともに示した説明図を図４に示す。また、図４のＡ−Ａ線の断面図を図５に示す。
ジェット孔から噴射した洗浄水が衝突する位置であるトラップ部より上流側であり、かつ頂上部７の近傍であるトラップ部の内壁に、略環状に突起３１をトラップ部３の内壁に設ける。これにより、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後にトラップ部の内壁に沿って排出口に向かう洗浄水を突起３１に衝突させて、下流管路部８に排出することができ、ジェット部の近傍まで戻ってくる返り水の量を低減して、巻き込み時の騒音を低減する。
【００３１】
本発明の返り水量低減用の突起を略逆Ｕ字状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図を図６に示し、縦断面図とともに示した説明図を図７に示す。また、図７のＢ−Ｂ線の断面図を図８に示す。
ジェット孔から噴射した洗浄水が衝突する位置であるトラップ部より上流側であり、かつ頂上部の近傍であるトラップ部の内壁に、略逆Ｕ字状に突起３１をトラップ部の内壁に設ける。これにより、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後にトラップ部の内壁に沿って排出口に向かう洗浄水を突起３１に衝突させて、下流管路部に排出することができ、ジェット部の近傍まで戻ってくる返り水の量を低減して、巻き込み時の騒音を低減する。
【００３２】
本発明の返り水量低減用の突起を設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図を図９に示す。
突起３１の下流側の立壁である第一立壁３２を、突起の下流側のトラップ部の内壁との角度が９０度以下に形成して設ける。また、突起の上流側の立壁である第二立壁３３の長さを、第一立壁３２の長さの２倍以上に形成して設ける。
【００３３】
本発明の返り水量低減用の連結部を略環状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図を図１０に示し、縦断面図とともに示した説明図を図１１に示す。また、図１１のＣ−Ｃ線の断面図を図１２に示す。
上流側の流路の断面積が大きい管路と下流側の流路の断面積が小さい管路とを連結する連結部４１を、ジェット孔から噴射した洗浄水が衝突する位置であるトラップ部より上流側に略環状に設ける。これにより、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後にトラップ部の内壁に沿って排出口に向かう洗浄水を連結部４１に衝突させて、下流管路部８に排出することができ、ジェット部の近傍まで戻ってくる返り水の量を低減して、巻き込み時の騒音を低減する。
【００３４】
本発明の返り水量低減用の連結部を略逆Ｕ字状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図を図１３に示し、縦断面図とともに示した説明図を図１４に示す。また、図１４のＤ−Ｄ線の断面図を図１５に示す。
上流側の流路の断面積が大きい管路と下流側の流路の断面積が小さい管路とを連結する連結部４１を、ジェット孔から噴射した洗浄水が衝突する位置であるトラップ部より上流側に略逆Ｕ字状に設ける。これにより、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後にトラップ部の内壁に沿って排出口に向かう洗浄水を連結部４１に衝突させて、下流管路部８に排出することができ、ジェット部の近傍まで戻ってくる返り水の量を低減して、巻き込み時の騒音を低減する。
【００３５】
本発明の返り水量低減用の連結部を設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図を図１６に示す。
連結部４１を、連結部の下流側のトラップ部の内壁との角度θが９０度以下に形成して設ける。
【００３６】
本発明の誘導手段である棚部を略環状に連結部に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図を図１７に示し、縦断面図とともに示した説明図を図１８に示す。また、図１８のＥ−Ｅ線の断面図を図１９に、Ｆ−Ｆ線の断面図を図２０に示す。
上流側の流路の断面積が大きい管路と下流側の流路の断面積が小さい管路とを連結する連結部４１を、ジェット孔から噴射した洗浄水が衝突する位置であるトラップ部より上流側に略環状に設ける。連結部４１の内周に棚部４２を略環状に設ける。これにより、ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後にトラップ部の内壁に沿って排出口に向かう洗浄水を連結部４１に衝突させた後に、棚部４２に沿って流すことで、下流管路部８に排出することができ、ジェット部の近傍まで戻ってくる返り水の量を低減して、巻き込み時の騒音を低減する。
なお、棚部は、連結部の内周に略逆Ｕ字状に設けても構わない。
【００３７】
本発明の誘導手段である縁部を略環状に棚部に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図を図２１に示し、縦断面図とともに示した説明図を図２２に示す。また、図２２のＧ−Ｇ線の断面図を図２３に示す。
棚部４２の下流側に縁部４３を略環状に設けることで、棚部４２を流れる洗浄水を、縁部４３を設けた棚部４２から落ちることなく流すことができ、棚部４２から落ちた返り水とジェット孔から噴射された洗浄水が衝突することを防ぐことができ、排出口に向かう返り水の量を効率良く低減して、巻き込み時の騒音を低減する。
なお、縁部は、棚部の下流側に略逆Ｕ字状に設けても構わない。
【００３８】
本発明の誘導手段である通水路をトラップ部の内壁より外側に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図を図２４に示し、縦断面図とともに示した説明図を図２５に示す。また、図２５のＨ−Ｈ線の断面図を図２６に、Ｉ−Ｉ線の断面図を図２７に示す。
誘導手段である通水路４４の入口４５を、ジェット孔から噴射した洗浄水が衝突するトラップ部より上流側に略逆Ｕ字状に設ける。また、通水路の出口４６を、ジェット孔から噴射した洗浄水が衝突するトラップ部より下流側に略逆Ｕ字状に設ける。
ジェット孔から噴射した洗浄水のうちでトラップ部に衝突した後にトラップ部の内壁に沿って排出口に向かう洗浄水を通水路４４の入口４５に設けた段部４６に衝突させて、通水路４４に導いて、下流管路部８に連通する出口４６から排出する。
【００３９】
本発明の整流手段の第一の実施形態では、図２８に示すようにジェットノズル５１の内部流路が直管であり吐出径φに対して３倍以上の長さＬを有する助走区間をもつことで、洗浄水が整流され、衝突音が低減される。
【００４０】
本発明の整流手段の第二の実施形態では、図２９に示すようにジェットノズル５１の内部流路が出口に向かって徐々に絞られていることで、洗浄水が整流され、衝突音が低減される。
【００４１】
本発明の整流手段の第三の実施形態では、図３０に示すようにジェットノズル５１の内部流路内に流路に対して平行に設置された整流板５２をもつことで、洗浄水が整流され、衝突音が低減される。本実施例ではジェットノズル５１内に整流板５２を設置しているが、ジェット給水管内に設置してもよい。
【００４２】
本発明の整流手段の第四の実施形態では、図３１に示すようにジェットノズル５１の内部流路内に流路に対して平行に設置された整流網５３をもつことで、洗浄水が整流され、衝突音が低減される。本実施例ではジェットノズル５１内に整流網５３を設置しているが、ジェット給水管内に設置してもよい。
【図面の簡単な説明】
【図１】図１は、本発明の残留汚水排出作用時の騒音を低減する機構を設けたサイホンジェット式便器の一実施形態を示す縦断面の説明図である。
【図２】図２は、本発明の残留汚水排出作用時の騒音を低減する機構を設けた壁排水式便器の一実施形態を示す縦断面の説明図である。
【図３】図３は、本発明の返り水量低減用の突起を略環状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図である。
【図４】図４は、本発明の返り水量低減用の突起を略環状に設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図５】図５は、図４のＡ−Ａ線の断面図である。
【図６】図６は、本発明の返り水量低減用の突起を略逆Ｕ字状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図である。
【図７】図７は、本発明の返り水量低減用の突起を略逆Ｕ字状に設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図８】図８は、図７のＢ−Ｂ線の断面図である。
【図９】図９は、本発明の返り水量低減用の突起を設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図１０】図１０は、本発明の返り水量低減用の連結部を略環状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図である。
【図１１】図１１は、本発明の返り水量低減用の連結部を略環状に設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図１２】図１２は、図１１のＣ−Ｃ線の断面図である。
【図１３】図１３は、本発明の返り水量低減用の連結部を略逆Ｕ字状に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図である。
【図１４】図１４は、本発明の返り水量低減用の連結部を略逆Ｕ字状に設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図１５】図１５は、図１４のＤ−Ｄ線の断面図である。
【図１６】図１６は、本発明の返り水量低減用の連結部を設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図１７】図１７は、本発明の誘導手段である棚部を略環状に連結部に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図である。
【図１８】図１８は、本発明の誘導手段である棚部を略環状に連結部に設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図１９】図１９は、図１８のＥ−Ｅ線の断面図である。
【図２０】図２０は、図１８のＦ−Ｆ線の断面図である。
【図２１】図２１は、本発明の誘導手段である縁部を略環状に棚部に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図である。
【図２２】図２２は、本発明の誘導手段である縁部を略環状に棚部に設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図２３】図２３は、図２２のＧ−Ｇ線の断面図である。
【図２４】図２４は、本発明の誘導手段である通水路をトラップ部の内壁より外側に設けたトラップ部の一実施形態を示す斜視図とともに示した説明図である。
【図２５】図２５は、本発明の誘導手段である通水路をトラップ部の内壁より外側に設けたトラップ部の一実施形態を示す縦断面図とともに示した説明図である。
【図２６】図２６は、図２５のＨ−Ｈ線の断面図である。
【図２７】図２７は、図２５のＩ−Ｉ線の断面図である。
【図２８】図２８は、本発明の整流手段の第一の実施形態に係わるものであって、整流機構の横断面図および縦断面図である。
【図２９】図２９は、本発明の整流手段の第二の実施形態に係わるものであって、整流機構の横断面図および縦断面図である。
【図３０】図３０は、本発明の整流手段の第三の実施形態に係わるものであって、整流機構の横断面図および縦断面図である。
【図３１】図３１は、本発明の整流手段の第四の実施形態に係わるものであって、整流機構の横断面図および縦断面図である。
【符号の説明】
１…サイホンジェット式便器
１ａ…壁排水式便器
２…ボウル部
３…トラップ部
４…ジェット部
５…排出口
６…上昇管路部
７…頂上部
８…下流管路部
９…給水管
１０…リム給水制御部
１１…ジェット給水制御部
１２…リム給水管
１３…リム通水路
１４…ジェット給水管
１５…操作部
１６…ジェット孔
１７…流出口
１８…隔壁
１８ａ…下端
１９…段部
３１…突起
３２…第一立壁
３３…第二立壁
４１…連結部
４２…棚部
４３…縁部
４４…通水路
４５…入口
４６…出口
５１…ジェットノズル
５２…整流板
５３…整流網
ｊ…ジェット孔から噴射した洗浄水の流れの模式図[0001]
BACKGROUND OF THE INVENTION
The present invention relates to an improvement of a trap part and a jet part of a flush toilet.
[0002]
[Prior art]
In conventional siphon jet toilets, washing water is jetted from the jet hole of the jet section toward the ascending pipeline of the trap section, and a siphon action is generated in the trap section, so that filth and sewage in the bowl section are collected in the trap section. Drain to downcomer. This is called siphon induction.
Then, after the siphon inducing action, the sewage containing the suspended sewage remaining on the bottom of the bowl part is engulfed with the cleaning water sprayed from the jet holes and discharged to the trap part. This is called the residual sewage discharging action.
As described above, the conventional siphon jet toilet has the siphon inducing action and the residual waste discharging action in the jet section.
[0003]
[Problems to be solved by the invention]
However, in the conventional siphon jet toilet, when the residual sewage is discharged, (1) the washing water sprayed from the jet hole collides with the trap part, and (2) returns to the vicinity of the jet part after colliding with the trap part. A large amount of noise was generated when the return water, which is the washing water, was introduced by the jet section.
The noise at the time of collision can be reduced by performing rectified injection that brings the washing water injection from the jet hole closer to rectification with less disturbance, but the washing water that has been rectified and injected flows along the inner wall of the trap part after the collision. In addition, the amount of return water, which is cleaning water that returns to the vicinity of the jet portion after colliding with the trap portion among the cleaning water sprayed from the jet holes, is relatively large, and as a result, noise during entrainment is large.
The present invention has been made in order to solve such a problem, and the object thereof is a flush toilet that reduces noise during the drainage of residual sewage after the occurrence of the siphon without lowering the ability to generate the siphon. Is to provide.
[0007]
[Means for solving the problems and their functions and effects]
The flush toilet according to claim 1 is:An ascending conduit that communicates with a discharge port formed at the bottom of the bowl portion that receives the filth and goes obliquely upward, and the ascending conduit for guiding the wash water that has passed through the ascending conduit to an external discharge pipe A trap part composed of a downstream pipe part bent downward from the top of the part toward the downstream side, and a jet part having jet holes for jetting washing water toward the downstream side of the rising pipe part, In the flush toilet equipped,
A step provided on the top wall of the ascending pipe section or an inner wall in the vicinity thereof in order to inhibit the flow of cleaning water toward the discharge port after colliding with the trap section among the cleaning water sprayed from the jet holes. Having return water inhibition means formed by
The step portion is formed by a protrusion provided to protrude from the inner wall in a substantially inverted U shape along the circumferential inner wall of the trap portion.It is characterized by that. In the present inventionAccording toAfter the collision of the cleaning water sprayed from the jet holes with the trap portion, the return water, which is the cleaning water that spreads in a fan shape and flows along the inner wall of the trap portion and flows toward the discharge port, is substantially reversed U on the inner wall of the trap portion. By colliding with the protrusions provided in the shape of a letter, the amount of return water toward the discharge port can be reduced efficiently, and the cleaning water sprayed from the jet holes contains cleaning water containing sewage water that has stayed in the vicinity of the jet holes. The entrainment sound at the time of entraining return water can be reduced. Further, by providing the projection in a substantially inverted U shape, it is possible to reduce the change in the cross-sectional area of the flow path of the trap portion, and to reduce the occurrence of the siphon action when the siphon action occurs. .
[0008]
Claims2The flush toilet according to claim 1, wherein the first standing wall, which is a standing wall on the downstream side of the projection, has an angle of 90 degrees or less with the inner wall of the trap portion on the downstream side of the projection. It is formed as follows. In the present inventionAccording toThe first standing wall, which is the standing wall on the downstream side of the protrusion, is formed at an angle of 90 degrees or less with the inner wall of the trap portion on the downstream side of the protrusion, thereby preventing return water from getting over the protrusion and reaching the discharge port. The amount of return water toward the discharge port can be efficiently reduced, and the cleaning water sprayed from the jet hole entrains the cleaning water containing the sewage and the return water collected in the vicinity of the jet hole. Can be reduced.
[0009]
Claims3The flush toilet according to claim1 or 2In the flush toilet described above, the length of the second standing wall, which is the standing wall on the upstream side of the protrusion, is at least twice the length of the first standing wall. In the present inventionAccording toThe cross-sectional area of the flow path from the discharge port to the first standing wall of the protrusion can be changed gently, and the flow of dirt and sewage can be reduced from being disturbed by the protrusion when the siphon action occurs.
[0010]
Claims4The flush toilet according to claim1From3In the flush toilet bowl according to any one of the above, the protrusion is provided as a separate body from the trap portion. In the present inventionAccording toSince the trap part of the toilet bowl body made of earthenware can be formed into a shape having a simple conduit, the existing toilet bowl body can be used as it is, which is beneficial in manufacturing. Moreover, the protrusions to be separated may be made of earthenware or may be formed from another member such as resin.
[0012]
Claims5The described flush toilet isAn ascending conduit that communicates with a discharge port formed at the bottom of the bowl portion that receives the filth and goes obliquely upward, and the ascending conduit for guiding the wash water that has passed through the ascending conduit to an external discharge pipe A trap part composed of a downstream pipe part bent downward from the top of the part toward the downstream side, and a jet part having jet holes for jetting washing water toward the downstream side of the rising pipe part, In the flush toilet equipped,
A step provided on the top wall of the ascending pipe section or an inner wall in the vicinity thereof in order to inhibit the flow of cleaning water toward the discharge port after colliding with the trap section among the cleaning water sprayed from the jet holes. And the stepped portion connects the rising pipe portion having a small cross-sectional area of the flow channel and the descending pipe portion having a large cross-sectional area at the top of the rising pipe portion. The connecting portion is provided in a substantially inverted U shape along the inner wall in the circumferential direction of the trap portion.It is characterized by that. In the present inventionAccording toAfter the collision of the cleaning water sprayed from the jet holes with the trap portion, the return water, which is the cleaning water that spreads in a fan shape and flows along the inner wall of the trap portion and flows toward the discharge port, is substantially reversed U on the inner wall of the trap portion. The amount of return water toward the discharge port can be efficiently reduced by colliding with the connecting portion provided in a letter shape, and the wash water sprayed from the jet holes includes the sewage water retained in the vicinity of the jet holes. The entrainment sound when entraining the return water can be reduced. Further, by providing the connection part in a substantially inverted U shape, the change in the cross-sectional area of the flow path of the trap part can be reduced, and the occurrence of the siphon action can be reduced when the siphon action occurs. it can.
[0013]
Claims6The flush toilet according to claim5In the flush toilet described above, the connecting portion is formed such that an angle between the connecting portion and the inner wall of the trap portion on the downstream side of the connecting portion is 90 degrees or less. In the present inventionAccording toBy providing the connecting portion so that the angle with the inner wall of the trap portion on the downstream side of the connecting portion is 90 degrees or less, it is possible to prevent return water from getting over the connecting portion and reaching the discharge port. The amount of return water toward the water can be efficiently reduced, and the cleaning water sprayed from the jet holes can reduce the entrainment noise when the cleaning water including the sewage staying in the vicinity of the jet holes and the return water are involved. .
[0015]
Claims7The flush toilet according to claim1From6In the flush toilet according to any one ofThe washing water that has collided with the step portion is guided to the downstream pipe portion.A guiding means is provided in connection with the stepped portion. In the present inventionAccording toWashing water that has collided with the step portion can be efficiently guided to the downstream pipe portion by the guiding means connected to the step portion, and the amount of return water toward the discharge port can be efficiently reduced. It is possible to reduce the entrainment noise when the cleaning water ejected from the jet holes entrains the cleaning water and the return water containing the sewage retained in the vicinity of the jet holes.
[0016]
Claims8The flush toilet according to claim7In the flush toilet described above, the guiding means is provided with a shelf that allows flush water that collides with the stepped portion to flow along an inner circumference in a circumferential direction of the trap portion. In the present inventionAccording toWash water that has collided with the stepped part can be flowed to the shelf part connected to the stepped part, can be efficiently guided to the downstream pipe part, and the amount of return water toward the discharge port can be efficiently It is possible to reduce, and it is possible to reduce the entrainment noise when the cleaning water ejected from the jet holes entrains the cleaning water and the return water containing the sewage retained in the vicinity of the jet holes.
[0017]
Claims9The flush toilet according to claim8In the flush toilet described, the shelf portion is provided with an edge portion protruding from the end portion toward the inner wall of the trap portion. In the present inventionAccording toWash water flowing through the shelf can flow without falling from the shelf provided with the edge, can be efficiently guided to the downstream pipeline, and the amount of return water toward the discharge port is efficiently reduced It is possible to reduce the entrainment noise when the cleaning water sprayed from the jet holes entrains the cleaning water and the return water containing the sewage accumulated in the vicinity of the jet holes.
[0018]
Claims10The flush toilet according to claim7In the flush toilet described above, the guide means is provided with a passage portion through which the wash water colliding with the stepped portion is provided outside the inner wall of the trap portion where the wash water ejected from the jet hole collides. To do. In the present inventionAccording toBy flowing the wash water that has collided with the step part to the passage part provided outside the inner wall of the trap part, it can be guided to the downstream pipe part, and the amount of return water toward the discharge port can be efficiently reduced. It is possible to reduce the entrainment noise when the cleaning water sprayed from the jet holes entrains the cleaning water and the return water containing the sewage retained in the vicinity of the jet holes. In addition, since the passage portion is provided outside the inner wall of the trap portion where the cleaning water sprayed from the jet hole collides, it is possible to reduce the obstruction of the flow of filth and waste water when the siphon action occurs.
[0019]
Claims11The flush toilet according to claim1From10The flush toilet according to any one of the above, wherein the downstream conduit portion is provided with a descending conduit portion including the stepped portion as a separate body, and the separate descending conduit portion is attached to one end of the ascending conduit portion. It is characterized by having formed. In the present inventionAccording toSince the trap part of the toilet bowl body made of earthenware can be formed into a shape having a simple conduit, the existing toilet bowl body can be used as it is, which is beneficial in manufacturing. Further, the separate descending pipe line part may be made of earthenware or may be formed from a separate member such as resin.
[0025]
DETAILED DESCRIPTION OF THE INVENTION
Embodiments according to the present invention will be described below with reference to the drawings.
FIG. 1 is an explanatory view of a longitudinal section showing an embodiment of a siphon jet toilet having a mechanism for reducing noise during the operation of discharging residual sewage according to the present invention.
[0026]
In FIG. 1, a siphon jet toilet 1 includes a bowl part 2, a trap part 3, and a jet part 4.
The trap section 3 communicates with a discharge port 5 formed at the bottom of the bowl section 2 and has a rise pipe section 6 having a rise pipe, and guides wash water that has passed through the rise pipe section 6 to an external discharge pipe. For this purpose, it is formed by connecting a downstream pipe section 8 having a descending pipe bent downward from the top 7 of the ascending pipe toward the downstream side.
The water supply pipe 9 is branched and connected to one end of the rim water supply control unit 10 and the jet water supply control unit 11, and the other end of the rim water supply control unit 10 is connected to the rim water passage 13 through the rim water supply pipe 12. The other end of the jet control unit 11 is connected to a jet unit 4 provided at the bottom of the bowl unit 2 via a jet water supply pipe 14.
[0027]
In addition, an operation unit 15 that gives a start input to the rim water supply control unit 10 and the jet control unit 11 is provided.
When the activation input signal from the operation unit 15 is given, the rim water supply control unit 10 is driven to open. Accordingly, the cleaning water is supplied from the rim water passage 13 to the bowl portion 2 through the rim water supply pipe 12 to clean the wall surface of the bowl portion 2.
After a predetermined time has elapsed, the rim water supply control unit 10 is driven to the valve closed state, and the jet water supply control unit 11 is driven to the valve open state. Accordingly, the cleaning water is jetted from the jet hole 16 of the jet part 4 toward the trap part 3 through the jet water supply pipe 14. This washing water flows over the top portion 7 to the downstream pipe portion 8 and is further discharged from the outlet port 17. At this time, the siphon state is generated in the trap portion 3 due to the negative pressure generated in the trap portion 3, and the bowl The discharge of filth and sewage in part 2 is started. This siphon state ends when the sealing surface is lowered from the lower end 18a of the partition wall 18 and air flows into the trap portion 3.
[0028]
After the siphon state is stopped, the sewage containing suspended filth and the like remaining on the bottom of the bowl part 2 is engulfed with the cleaning water sprayed from the jet hole 16 and discharged to the trap part 3. The flow of cleaning water ejected from the jet holes 16 is schematically indicated by arrows.
At the time of this residual sewage discharging action, (1) the cleaning water sprayed from the jet hole collides with the trap part, and (2) the return is the cleaning water that returns to the vicinity of the jet part after colliding with the trap part. Noise is generated when water is caught in the jet section.
A rectifying means for rectifying the cleaning water sprayed from the jet hole 16 is provided in the jet portion 4 to reduce noise at the time of collision.
Further, return water inhibiting means for inhibiting the flow of washing water toward the discharge port 5 after colliding with the trap part 3 out of the washing water jetted from the jet holes 16 is provided in the trap part 3 to reduce noise during entrainment. To do.
[0029]
In this embodiment, a stepped portion 19 is provided on the inner wall of the trap portion 3 that is upstream of the trap portion 3 where the wash water jetted from the jet hole 16 collides and is in the vicinity of the top portion 7 as return water inhibiting means. . As a result, the cleaning water sprayed from the jet hole 16 collides with the trap portion 3 and then collides with the step portion 19 along the inner wall of the trap portion 3 with the cleaning water, and the downstream pipe portion 8. The amount of return water that can be discharged to the vicinity of the jet section 4 is reduced, and noise during entrainment is reduced.
Thereby, the noise at the time of a residual sewage discharge effect | action can be reduced significantly.
In addition, although FIG. 1 demonstrated one Embodiment in a floor drainage toilet bowl, a wall drainage toilet bowl like FIG. 2 may be sufficient.
[0030]
FIG. 3 shows an explanatory view showing together with a perspective view showing an embodiment of a trap part provided with a projection for reducing the amount of returned water of the present invention in a substantially annular shape, and FIG. 4 shows an explanatory view showing it together with a longitudinal sectional view. FIG. 5 is a sectional view taken along line AA in FIG.
A protrusion 31 is provided on the inner wall of the trap portion 3 in a substantially annular shape on the inner wall of the trap portion that is upstream of the trap portion where the cleaning water sprayed from the jet hole collides and is in the vicinity of the top portion 7. Thus, the washing water that has collided with the trap portion out of the washing water jetted from the jet hole, collides with the protrusion 31 along the inner wall of the trap portion, and can be discharged to the downstream pipe portion 8. It is possible to reduce the amount of return water that returns to the vicinity of the jet part, and to reduce noise during entrainment.
[0031]
FIG. 6 is an explanatory view showing an embodiment of the trap portion provided with a substantially inverted U-shaped projection for reducing the amount of returned water according to the present invention, and FIG. 7 is an explanatory view showing it along with a longitudinal sectional view. Shown in FIG. 8 is a cross-sectional view taken along line BB in FIG.
A protrusion 31 is provided on the inner wall of the trap portion in a substantially inverted U shape on the inner wall of the trap portion, which is upstream of the trap portion where the cleaning water sprayed from the jet hole collides, and in the vicinity of the top. This allows the wash water sprayed from the jet hole to collide with the trap part and then collide with the protrusion 31 along the inner wall of the trap part to collide with the protrusion 31 and be discharged to the downstream pipe part. The amount of return water that returns to the vicinity of the jet part is reduced to reduce noise during entrainment.
[0032]
FIG. 9 shows an explanatory view shown together with a longitudinal sectional view showing an embodiment of the trap portion provided with a projection for reducing the amount of returned water of the present invention.
A first standing wall 32 that is a standing wall on the downstream side of the protrusion 31 is provided with an angle of 90 degrees or less with respect to the inner wall of the trap portion on the downstream side of the protrusion. Further, the length of the second standing wall 33 that is the standing wall on the upstream side of the protrusion is formed to be twice or more than the length of the first standing wall 32.
[0033]
FIG. 10 shows an explanatory view showing together with a perspective view of an embodiment of a trap portion provided with a connecting portion for reducing the amount of return water of the present invention in a substantially annular shape, and FIG. 11 shows an explanatory view showing together with a longitudinal sectional view. . FIG. 12 is a cross-sectional view taken along the line CC of FIG.
A connecting portion 41 that connects a pipe line having a large cross-sectional area of the upstream flow path and a pipe line having a small cross-sectional area of the downstream flow path from the trap portion that is a position where the washing water sprayed from the jet holes collides. It is provided in a substantially annular shape on the upstream side. As a result, of the cleaning water sprayed from the jet holes, the cleaning water that collides with the trap portion after colliding with the trap portion collides with the connecting portion 41 and is discharged to the downstream pipe portion 8. The amount of return water that returns to the vicinity of the jet part can be reduced to reduce noise during entrainment.
[0034]
FIG. 13 is an explanatory view showing an embodiment of a trap portion provided with a connecting portion for reducing the amount of return water of the present invention in a substantially inverted U shape, and FIG. 13 is an explanatory view showing a vertical sectional view. 14 shows. FIG. 15 is a cross-sectional view taken along the line DD in FIG.
A connecting portion 41 that connects a pipe line having a large cross-sectional area of the upstream flow path and a pipe line having a small cross-sectional area of the downstream flow path from the trap portion that is a position where the washing water sprayed from the jet holes collides. It is provided in a substantially inverted U shape on the upstream side. As a result, of the cleaning water sprayed from the jet holes, the cleaning water that collides with the trap portion after colliding with the trap portion collides with the connecting portion 41 and is discharged to the downstream pipe portion 8. The amount of return water that returns to the vicinity of the jet part can be reduced to reduce noise during entrainment.
[0035]
FIG. 16 shows an explanatory view shown together with a longitudinal sectional view showing an embodiment of a trap part provided with a connecting part for reducing the amount of returned water of the present invention.
The connecting portion 41 is provided so that the angle θ with the inner wall of the trap portion on the downstream side of the connecting portion is 90 degrees or less.
[0036]
FIG. 17 shows an explanatory view showing an embodiment of the trap portion provided with a shelf portion, which is a guiding means of the present invention, in a substantially annular shape at the connecting portion, and FIG. Shown in FIG. 19 is a cross-sectional view taken along the line EE of FIG. 18, and FIG. 20 is a cross-sectional view taken along the line FF of FIG.
A connecting portion 41 that connects a pipe line having a large cross-sectional area of the upstream flow path and a pipe line having a small cross-sectional area of the downstream flow path from the trap portion that is a position where the washing water sprayed from the jet holes collides. It is provided in a substantially annular shape on the upstream side. A shelf 42 is provided in a substantially annular shape on the inner periphery of the connecting portion 41. As a result, the cleaning water sprayed from the jet holes collides with the trap portion after colliding with the trap portion, and then the cleaning water flowing toward the discharge port along the inner wall of the trap portion is caused to collide with the connecting portion 41 and then flow along the shelf portion 42. Thus, the amount of return water that can be discharged to the downstream pipe portion 8 and returned to the vicinity of the jet portion is reduced, and noise during entrainment is reduced.
In addition, you may provide a shelf part in a substantially reverse U shape in the inner periphery of a connection part.
[0037]
FIG. 21 shows an explanatory view showing an embodiment of the trap portion provided with the edge portion, which is the guiding means of the present invention, in a substantially circular shape on the shelf portion, and FIG. Shown in FIG. 23 is a cross-sectional view taken along line GG in FIG.
By providing the edge 43 in a substantially annular shape on the downstream side of the shelf 42, the washing water flowing through the shelf 42 can flow without falling from the shelf 42 provided with the edge 43. It is possible to prevent the return water and the washing water jetted from the jet hole from colliding with each other, efficiently reducing the amount of the return water toward the discharge port, and reducing noise during entrainment.
In addition, you may provide an edge part in the substantially reverse U-shape in the downstream of a shelf part.
[0038]
FIG. 24 is an explanatory view showing a perspective view showing an embodiment of a trap part in which a water passage that is a guiding means of the present invention is provided outside the inner wall of the trap part, and FIG. 25. FIG. 26 is a cross-sectional view taken along the line HH in FIG. 25, and FIG. 27 is a cross-sectional view taken along the line II.
The inlet 45 of the water passage 44 as a guiding means is provided in a substantially inverted U shape upstream from the trap portion where the cleaning water sprayed from the jet hole collides. Further, the outlet 46 of the water passage is provided in a substantially inverted U shape downstream from the trap portion where the cleaning water jetted from the jet hole collides.
The washing water sprayed from the jet holes collides with the trap portion after being collided with the step portion 46 provided at the inlet 45 of the water passage 44 along the inner wall of the trap portion. And discharged from an outlet 46 communicating with the downstream pipe section 8.
[0039]
In the first embodiment of the rectifying means of the present invention, as shown in FIG. 28, the internal flow path of the jet nozzle 51 is a straight pipe and has a running section having a length L that is three times or more the discharge diameter φ. As a result, the washing water is rectified and the collision noise is reduced.
[0040]
In the second embodiment of the rectifying means of the present invention, as shown in FIG. 29, the internal flow path of the jet nozzle 51 is gradually squeezed toward the outlet, so that the washing water is rectified and the collision noise is reduced. Is done.
[0041]
In the third embodiment of the rectifying means of the present invention, the wash water is rectified by having a rectifying plate 52 installed parallel to the flow path in the internal flow path of the jet nozzle 51 as shown in FIG. The collision noise is reduced. In this embodiment, the rectifying plate 52 is installed in the jet nozzle 51, but it may be installed in the jet water supply pipe.
[0042]
In the fourth embodiment of the rectifying means of the present invention, the wash water is rectified by having a rectifying network 53 installed in parallel to the flow path in the internal flow path of the jet nozzle 51 as shown in FIG. The collision noise is reduced. In this embodiment, the rectifying network 53 is installed in the jet nozzle 51, but it may be installed in the jet water supply pipe.
[Brief description of the drawings]
FIG. 1 is an explanatory view of a longitudinal section showing an embodiment of a siphon jet toilet having a mechanism for reducing noise during the operation of discharging residual sewage according to the present invention.
FIG. 2 is an explanatory view of a longitudinal section showing an embodiment of a wall-draining toilet provided with a mechanism for reducing noise during the operation of discharging residual sewage according to the present invention.
FIG. 3 is an explanatory view together with a perspective view showing an embodiment of a trap portion in which a projection for reducing the amount of return water according to the present invention is provided in a substantially annular shape.
FIG. 4 is an explanatory view together with a longitudinal sectional view showing an embodiment of a trap part in which a projection for reducing the amount of return water according to the present invention is provided in a substantially annular shape.
FIG. 5 is a cross-sectional view taken along line AA in FIG. 4;
FIG. 6 is an explanatory view showing, together with a perspective view, an embodiment of a trap portion in which a projection for reducing the amount of return water according to the present invention is provided in a substantially inverted U shape.
FIG. 7 is an explanatory view showing, together with a longitudinal sectional view, an embodiment of a trap part in which a projection for reducing the amount of return water according to the present invention is provided in a substantially inverted U shape.
8 is a cross-sectional view taken along line BB in FIG. 7. FIG.
FIG. 9 is an explanatory view together with a longitudinal sectional view showing an embodiment of a trap part provided with a projection for reducing the amount of returned water according to the present invention.
FIG. 10 is an explanatory view showing, together with a perspective view, an embodiment of a trap portion in which the connecting portion for reducing the amount of return water according to the present invention is provided in a substantially annular shape.
FIG. 11 is an explanatory view showing, together with a longitudinal sectional view, an embodiment of a trap portion in which a connecting portion for reducing the amount of return water according to the present invention is provided in a substantially annular shape.
12 is a cross-sectional view taken along line CC in FIG. 11. FIG.
FIG. 13 is an explanatory view together with a perspective view showing an embodiment of a trap part in which a connecting part for reducing the amount of returned water according to the present invention is provided in a substantially inverted U shape.
FIG. 14 is an explanatory view together with a longitudinal sectional view showing an embodiment of a trap part in which a connecting part for reducing the amount of return water according to the present invention is provided in a substantially inverted U shape.
FIG. 15 is a cross-sectional view taken along the line DD of FIG. 14;
FIG. 16 is an explanatory view together with a longitudinal sectional view showing an embodiment of a trap part provided with a connecting part for reducing the amount of return water according to the present invention.
FIG. 17 is an explanatory view showing, together with a perspective view, an embodiment of a trap part in which a shelf part that is a guiding means of the present invention is provided in a connection part in a substantially annular shape.
FIG. 18 is an explanatory view showing a longitudinal section showing an embodiment of a trap part in which a shelf part which is a guiding means of the present invention is provided in a connection part in a substantially annular shape.
FIG. 19 is a cross-sectional view taken along line EE of FIG.
20 is a cross-sectional view taken along the line FF in FIG. 18. FIG.
FIG. 21 is an explanatory view showing a trap portion in which an edge portion, which is a guiding means of the present invention, is provided in a substantially circular shape on a shelf, together with a perspective view.
FIG. 22 is an explanatory view showing a trap portion in which an edge portion, which is the guiding means of the present invention, is provided in a substantially circular shape on a shelf, together with a longitudinal sectional view showing an embodiment of the trap portion.
23 is a cross-sectional view taken along line GG in FIG.
FIG. 24 is an explanatory view showing, together with a perspective view, an embodiment of a trap part in which a water passage that is a guiding means of the present invention is provided outside the inner wall of the trap part.
FIG. 25 is an explanatory view showing, together with a longitudinal sectional view, an embodiment of a trap part in which a water passage that is a guiding means of the present invention is provided outside the inner wall of the trap part.
26 is a cross-sectional view taken along line HH in FIG. 25. FIG.
FIG. 27 is a cross-sectional view taken along the line II of FIG.
FIG. 28 relates to the first embodiment of the rectifying means of the present invention, and is a transverse sectional view and a longitudinal sectional view of the rectifying mechanism.
FIG. 29 relates to a second embodiment of the rectifying means of the present invention, and is a transverse sectional view and a longitudinal sectional view of a rectifying mechanism.
FIG. 30 relates to a third embodiment of the rectifying means of the present invention, and is a transverse sectional view and a longitudinal sectional view of a rectifying mechanism.
FIG. 31 relates to a fourth embodiment of the rectifying means of the present invention, and is a transverse sectional view and a longitudinal sectional view of a rectifying mechanism.
[Explanation of symbols]
1. Siphon jet toilet
1a ... Wall drainage toilet
2 ... Bowl
3 ... Trap part
4 ... Jet part
5 ... Discharge port
6 ... Ascending pipeline
7 ... top
8 ... Downstream pipe section
9 ... Water supply pipe
10 ... Rim water supply control unit
11 ... Jet water supply control unit
12 ... Rim water supply pipe
13 ... Rim waterway
14 ... Jet water pipe
15 ... Operation part
16 ... Jet hole
17 ... Outlet
18 ... Bulkhead
18a ... lower end
19 ... Step
31 ... Protrusions
32. First standing wall
33 ... Second standing wall
41 ... connecting part
42 ... shelf
43 ... Edge
44 ... Waterway
45 ... Entrance
46 ... Exit
51 ... Jet nozzle
52 ... Rectifying plate
53 ... Rectifier network
j ... Schematic diagram of the flow of cleaning water sprayed from the jet hole

Claims

An ascending conduit that communicates with a discharge port formed at the bottom of the bowl portion that receives the filth and goes obliquely upward, and the ascending conduit for guiding the wash water that has passed through the ascending conduit to an external discharge pipe A trap part composed of a downstream pipe part bent downward from the top of the part toward the downstream side, and a jet part having jet holes for jetting washing water toward the downstream side of the rising pipe part, In the flush toilet equipped,
A step provided on the top wall of the ascending pipe section or an inner wall in the vicinity thereof in order to inhibit the flow of cleaning water toward the discharge port after colliding with the trap section among the cleaning water sprayed from the jet holes. Having return water inhibition means formed by
The flush toilet bowl, wherein the stepped portion is formed by a protrusion that protrudes from the inner wall in a substantially inverted U shape along the circumferential inner wall of the trap portion.

The flush type according to claim 1, wherein the first standing wall, which is the standing wall on the downstream side of the projection, is formed so that the angle with the inner wall of the trap portion on the downstream side of the projection is 90 degrees or less. Toilet bowl.

The length of the 2nd standing wall which is the standing wall of the upstream of the said protrusion is 2 times or more of the length of the 1st standing wall which is the standing wall of the downstream of the said protrusion, The Claim 1 or 2 characterized by the above-mentioned. Flush toilet.

The flush toilet according to any one of claims 1 to 3, wherein the protrusion is provided separately from the trap portion.

An ascending conduit that communicates with a discharge port formed at the bottom of the bowl portion that receives the filth and goes obliquely upward, and the ascending conduit for guiding the wash water that has passed through the ascending conduit to an external discharge pipe A trap part composed of a downstream pipe part bent downward from the top of the part toward the downstream side, and a jet part having jet holes for jetting washing water toward the downstream side of the rising pipe part, In the flush toilet equipped,
A step provided on the top wall of the ascending pipe section or an inner wall in the vicinity thereof in order to inhibit the flow of cleaning water toward the discharge port after colliding with the trap section among the cleaning water sprayed from the jet holes. Having return water inhibition means formed by
The stepped portion is connected to a connecting portion for connecting a rising pipe section having a small cross-sectional area of the flow path and a descending pipe section having a large cross-sectional area at the top of the rising pipe section in the circumferential direction of the trap section. A flush toilet comprising a substantially inverted U shape along the inner wall.

The flush toilet according to claim 5, wherein the step portion is formed so that an angle with an inner wall of the trap portion on the downstream side of the connecting portion is 90 degrees or less.

The flush type according to any one of claims 1 to 6, characterized in that guide means for guiding the wash water that has collided with the step portion to the downstream pipe portion is connected to the step portion. Toilet bowl.

The flush toilet according to claim 7, wherein the guide means includes a shelf that allows flush water that collides with the step portion to flow along an inner circumference in a circumferential direction of the trap portion.

9. The flush toilet according to claim 8, wherein the shelf is provided with an edge protruding from an end of the shelf toward the inner wall of the trap.

8. The water washing apparatus according to claim 7, wherein the guide means has a passage portion through which the washing water colliding with the stepped portion is provided outside the inner wall of the trap portion where the washing water jetted from the jet hole collides. Toilet bowl.

The downstream pipe part is provided with a descending pipe part including the step part as a separate body, and the separate down pipe part is attached to one end of the ascending pipe part. Item 11. The flush toilet bowl according to any one of Items 1 to 10.