JPWO2019212028A1 - 微細気泡発生装置 - Google Patents
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Abstract
Description
(1)微細気泡濃度が高く、気泡径が数十マイクロメートル以下の小さい気泡径の微細気泡を発生させることができる。
(2)排出口から放出される微細気泡を有する気液混合液の液圧を高く保つことができるため、例えば、上水道の配水管等から供給される水圧で装置内に水を導入しても、その水圧を保ったまま、又はその水圧をより高めた気液混合液として装置外に放出することができる。
(3)また、下流側の縮径部の最小内径を上流側のものよりも小さく形成することにより、より小さい気泡径を有する微細気泡を発生させることができる。
(4)また、下流側の気液混合部の内径を上流側のものよりも大きく形成することにより、気泡の圧壊収縮を促進させ、より微細化したナノオーダーレベルの気泡径を有する微細気泡を発生させることができる。
(5)また、最も上流側に設けられた縮径部と縮径部に連続する気液混合部、及び気液混合部に連続する縮径部に対応する部分の管状体を一体的にかつ同軸に形成することにより、耐圧性が高められ、安定的に使用できる装置を得ることができる。
1.気液混合液に含まれる微細気泡の粒子径等の測定(1)
微細気泡発生装置1を用いて気液混合液Mを生成させ、気液混合液M中に含まれる微細気泡の粒子径分布、気液混合液Mの溶存酸素量及び気泡生成器2の排出口29から放出される気液混合液Mの水圧を測定した。なお、微細気泡の粒子径分布の測定には、レーザ回折式粒度分布測定装置(型番:SALD−3100、株式会社島津製作所製品)を用い、溶存酸素量の測定にはデジタル溶存酸素計(型番:DO−5509、株式会社マザーツール製品)を用いた。
2.気液混合液に含まれる微細気泡の粒子径等の測定(2)
実施例1で用いた微細気泡発生装置1から、シャワーヘッド5を省いた構成の微細気泡発生装置1´(シャワーヘッド5無し)を用いた以外は、実施例1と同様の構成及び同様の条件で、生成した気液混合液M中に含まれる微細気泡の粒子径分布、気液混合液Mの溶存酸素量及び気泡生成器2の排出口29から放出される気液混合液Mの水圧を測定した。
3.気液混合液に含まれる微細気泡の粒子径等の測定(3)
実施例1で用いた微細気泡発生装置1の気泡生成器2及び気体供給手段3を、以下に詳述する気泡生成器及び気体供給手段に替えた構成の微細気泡発生装置(比較品)とした以外は、実施例1と同様の条件で、生成した気液混合液M中に含まれる微細気泡の粒子径分布、気液混合液Mの溶存酸素量及び気泡生成器の排出口から放出される気液混合液Mの水圧を測定した。
4.気液混合水を毛髪洗浄等に用いた際の毛髪状態の検討
本発明の微細気泡発生装置により得られた気液混合水Mを毛髪洗浄等に用いた際の毛髪状態を調べた。人の毛髪(健康で、これまで染色処理や脱色処理等していないもの)1本をプレパラートに固定し、カバーガラスをのせた後、カバーガラスの脇から実施例1で得られた気液混合水を加え、毛髪を気液混合水で浸した。顕微鏡にて20分間に亘り、毛髪の毛径を測定した。また、実施例1の気液混合水に替えて水道水を用いて同様の試験を行った。結果を図9のグラフに示す。
2、20 気泡生成器
21、210 流路
22、220 第1の縮径部
22d、220d 第1の縮径部の最小内径
23、230 第2の縮径部
23d、230d 第2の縮径部の最小内径
24、240 第1の気液混合部
24d、240d 第1の気液混合部の内径
25、250 第2の気液混合部
25d、250d 第2の気液混合部の内径
26、260 管状体
261 第1の管状体
262 第2の管状体
27 液体導入口
28 気体導入口(貫通孔)
29 排出口
3 気体供給手段
30 圧縮機
31 配管
32 接続部材
33 気体供給口
34 ケーシング
35 ナット
36 間隙
4 アダプター
5 シャワーヘッド
6 水栓
F 流れ方向
G 加圧気体
L 液体
M 気液混合液
Claims (6)
- 液体供給源から連続して供給される液体と、気体供給手段から供給される気体とを混合して微細気泡を発生させ、前記微細気泡と前記液体とが混合した気液混合液を排出する微細気泡発生装置であって、
前記液体の流路を内部に有する管状体、前記液体を前記流路に導入する液体導入口、前記気体を前記流路に導入する気体導入口及び前記気液混合液を前記流路から排出する排出口を有する気泡生成器と、
前記気体を加圧する圧縮機及び前記圧縮機によって加圧された気体を前記気泡生成器に供給する気体供給口を有する気体供給手段と、を備え、
前記気泡生成器の前記流路は前記液体導入口から前記排出口に至るまで略同軸線状に延びており、前記流路には前記液体の流れる方向に向かって内径を縮小させた縮径部が複数設けられ、各々の縮径部の下流側には、各縮径部における最小内径よりも大きい内径を有する気液混合部が夫々連続して設けられ、
前記気泡生成器の前記気体導入口は、前記管状体の外壁の周方向に沿って配設された複数の貫通孔として、前記流路における最も上流側に設けられた前記縮径部の近傍に設けられ、該気体導入口は、前記気体供給手段の前記気体供給口と連通していることを特徴とする微細気泡発生装置。 - 前記気泡生成器の前記流路において、最も上流側に設けられた前記縮径部と該縮径部に連続する気液混合部、及び該気液混合部に連続する縮径部に対応する部分の管状体が、一体的にかつ同軸に形成されていることを特徴とする請求項1に記載の微細気泡発生装置。
- 前記気泡生成器の前記複数の縮径部は、上流側に配置された縮径部の最小内径よりも下流側に配置された縮径部の最小内径の方が小さくなるように形成されていることを特徴とする請求項1又は2に記載の微細気泡発生装置。
- 前記気泡生成器の前記複数の気液混合部は、上流側に配置された気液混合部の内径よりも下流側に配置された気液混合部の内径の方が大きくなるように形成されていることを特徴とする請求項3に記載の微細気泡発生装置。
- 前記気泡生成器の前記流路には、上流側から下流側に向かって、第1の縮径部、該第1の縮径部に連続する第1の気液混合部、該第1の気液混合部と連続する第2の縮径部、及び該第2の縮径部に連続する第2の気液混合部が設けられ、
前記気泡生成器の前記気体導入口は、前記第1の縮径部の近傍に設けられていることを特徴とする請求項1〜4のいずれか1項に記載の微細気泡発生装置。 - さらに、シャワーヘッドを備え、該シャワーヘッドは前記気泡生成器の前記排出口に接続されたホースを介して連結されていることを特徴とする請求項1〜5のいずれか1項に記載の微細気泡発生装置。
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