JP6719667B2 - 螺旋状に巻いた要素用の干渉パターン - Google Patents
螺旋状に巻いた要素用の干渉パターン Download PDFInfo
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Description
[02] 本主題発明は、螺旋状に巻いた膜の透過膜要素を含む、流体成分の分離に有効な透過膜システムに関する。
[04] 螺旋状に巻いた膜の濾過要素は、多孔透過スペーサに、又は多孔透過スペーサを中心に封止した膜シートから構成された積層構造からなり、多孔透過スペーサは、膜を通過して中央チューブに流れる流体を除去するための経路を生成する一方で、この積層構造は、中央チューブを中心に螺旋状に巻き付けられ、要素を通る流体の軸流を可能にするために多孔供給スペーサでそれ自体から離間される。この供給スペーサは、積層構造の間の開いた均一の軸流を維持するために必要である一方で、この供給スペーサは、軸流チャネル内の流量制限及び圧力降下の源でもあり、生体成長、スケール形成、及び粒子捕捉を介して膜の汚染に大きく影響する膜への流れ及び接触を制限する面積も提示する。
[08] 本発明の実施形態は、第1リーフ及び第2リーフを含む、螺旋状に巻いた濾過要素内で使用するための膜を提供し、各リーフは活性表面を有し、複数の突出部が表面に配置され、突出部は、第1リーフの活性表面が第2リーフの活性表面に隣接して置かれると、突出部が互いに接触るように形状されて表面上に配置され、第1リーフ上の突出部は第2リーフ上の突出部により第2リーフの活性表面から分離され、第1リーフ及び第2リーフは活性表面が互いに面して置かれ、突出部によって分離される。2つのリーフは適切な材料のシートを分離することができ、又は単一シートを折り畳むことによって提供することができ、折り目の両側は1つのリーフを提供する。螺旋状に巻いた濾過要素に使用するための膜は、供給流体流れ及び廃液流れのそれぞれに遭遇する膜の縁部に対応する、2つの縁部、供給縁部及び排除縁部を本質的に有することに留意されたい。このような膜は、本質的に供給縁部と排除縁部との間の材料の寸法に対応する幅を有する。
[22] 隣接した膜シートの間に間隔を提供するために、膜シートの表面上、又は螺旋状に巻いた要素の透過担体シート上若しくは中の浮き彫り又は堆積特徴は、通常使用するメッシュより多く開いた流れチャネル、低い圧力降下、低減した汚染、及び薄い供給空間を生成する機能を含む供給スペーサメッシュに比べると、いくつかの利点を提供することができる。様々な構成はBargerら及びBradfordらにより、及び国際特許出願PCT/US2014/018813号に開示されている。本発明の実施形態は、印刷又は別法により堆積された表面特徴の使用を提供し、これは孤立した島の堆積によって達成できない独自の接触及び流れパターンを生成するために、隣接した膜シートの間に空間を提供するように互いに選択的に接触する。また、それによって生成されたパターンは、螺旋状に巻いた要素内に追加の間隔及び流れ方向を提供するために、互いに接触しない他の堆積特徴を含有してもよい。追加として、印刷又は別法による堆積特徴の可変の高さは、螺旋状に巻いた要素の異なる面積に異なるスペーサ幾何形状を生成するために利用することができる。
Claims (21)
- 第1リーフ及び第2リーフを含む、螺旋状に巻いた濾過要素内で使用するための膜であって、各リーフは活性表面を有し、複数の突出部が前記活性表面に配置され、前記突出部は、前記第1リーフの前記活性表面が前記第2リーフの前記活性表面に隣接して置かれたときに前記突出部が互いに接触するように形作られて前記活性表面上に配置され、前記第1リーフ上の前記突出部は、前記第2リーフ上の前記突出部により前記第2リーフの前記活性表面から分離され、前記第1リーフ及び前記第2リーフは、前記活性表面が互いに面して置かれ、前記突出部によって分離され、
前記突出部は、前記第1リーフの第1領域内及び前記第2リーフの第1領域内に配置され、(a)前記第1リーフの前記第1領域以外の前記第1リーフの前記活性表面上、(b)前記第2リーフの前記第1領域以外の前記第2リーフの前記活性表面上、又は(c)両方に配置された複数の流れ突出部を更に含み、前記流れ突出部は、前記第1リーフの前記第1領域内の前記突出部の高さ及び前記第2リーフの前記第1領域内の前記突出部の高さの合計にほぼ等しい高さを有し、一方のリーフ上の流れ突出部は、前記濾過要素が螺旋状に巻かれたときに他方のリーフ上の流れ突出部と接触しない、膜。 - 膜材料のシートを含み、前記第1リーフは前記シートの第1部分を含み、前記第2リーフは、折線により前記第1部分から分離された前記シートの第2部分を含み、前記第1及び第2リーフは、前記折線に沿って前記シートを折り畳むことにより、活性表面が互いに面して置かれる、請求項1に記載の膜。
- 前記突出部は複数の線状突出部を含み、前記線状突出部は、互いに平行に配置され、対応するリーフの活性表面ですべての平面方向に互いから分離され、前記線状突出部は、前記第1リーフ上の前記線状突出部が前記第2リーフ上の前記線状突出部にそれらの交点で接触するように、前記対応するリーフの供給縁部から90度以外の角度で前記活性表面に配置される、請求項1に記載の膜。
- 前記角度は、40〜85度、又は100〜135度である、請求項3に記載の膜。
- 前記突出部は、各リーフの前記活性表面から少なくとも0.065mmであるが、0.4mm以下だけ突出する、請求項1に記載の膜。
- 前記突出部は、前記膜が螺旋状に巻かれたときに、前記第1リーフ上の湾曲突出部が0度以外の角度で前記第2リーフ上の湾曲突出部と交差するように構成された複数の湾曲突出部を含む、請求項1に記載の膜。
- 前記線状突出部は、前記対応するリーフの全幅にわたって延在する、請求項3に記載の膜。
- 前記線状突出部は、前記対応するリーフの全幅より短く延在する、請求項3に記載の膜。
- 前記線状突出部は軸方向寸法に少なくとも20mmの長さであり、前記線状突出部の間の間隔は前記線状突出部の長さより短い、請求項8に記載の膜。
- 前記流れ突出部は、前記第1リーフ上に配置され、前記第2リーフ上に配置されない、請求項1に記載の膜。
- 前記線状突出部は、前記対応するリーフの前記供給縁部及び排除縁部の近位の領域に配置され、(a)前記線状突出部によって占有された領域以外の領域内の前記第1リーフの前記活性表面上、(b)前記線状突出部によって占有された領域以外の領域内の前記第2リーフの前記活性表面上、又は(c)両方に配置された複数の流れ突出部を更に含み、前記流れ突出部は、前記第1リーフ上の前記線状突出部の高さ及び前記第2リーフ上の前記線状突出部の高さの合計にほぼ等しい高さを有し、一方のリーフ上の前記流れ突出部は、前記濾過要素が螺旋状に巻かれたときに他方のリーフ上の前記流れ突出部と接触しない、請求項8に記載の膜。
- 前記流れ突出部は、前記第1リーフ上に配置され、前記第2リーフ上に配置されない、請求項11に記載の膜。
- 螺旋状に巻いた濾過要素内で使用するための膜を作成する方法であって、
それぞれが活性表面を有する第1リーフ及び第2リーフを提供することと、
その第1領域内で各リーフの前記活性表面上に第1の複数の突出部を置くことであって、前記突出部は、前記第1リーフの前記活性表面が前記第2リーフの前記活性表面に隣接して置かれたときに前記突出部が互いに接触するように形作られて前記活性表面上に配置され、前記第1リーフ上の前記突出部は前記第2リーフ上の前記突出部により前記第2リーフの前記活性表面から分離される、置くことと、
(a)前記第1リーフの前記第1領域以外の前記第1リーフの前記活性表面上、(b)前記第2リーフの前記第1領域以外の前記第2リーフの前記活性表面上、又は(c)両方に第2の複数の流れ突出部を置くことであって、前記流れ突出部は、前記第1リーフの前記第1領域内の前記突出部の高さ及び前記第2リーフの前記第1領域内の前記突出部の高さの合計にほぼ等しい高さを有し、一方のリーフ上の流れ突出部は、前記濾過要素が螺旋状に巻かれたときに他方のリーフ上の流れ突出部と接触しない、置くことと、
前記第1リーフの前記活性表面を、前記突出部によって分離された前記第2リーフの前記活性表面に隣接して置くことと、を含む方法。 - 第1リーフ及び第2リーフを提供することは、折線により第1リーフ及び第2リーフに分離されたシートを提供することを含み、前記第1リーフの前記活性表面を前記第2リーフの前記活性表面に隣接して置くことは、前記折線に沿って前記シートを折り畳むことを含む、請求項13に記載の方法。
- 中央チューブを中心に螺旋状に巻いた、請求項1に記載の膜を含む濾過要素。
- 請求項15に記載の複数の濾過要素を含む、流体処理システム。
- 請求項15に記載の濾過要素を通る前記流体を流すことを含む、流体を処理する方法。
- 螺旋状に巻いた濾過要素に使用するための膜であって、活性表面を有するシートを含み、前記シートは、前記活性表面を前記折り畳んだシートの内側に折り畳んで折線の第1側に第1リーフ部分を形成するととも前記折線の第2側に第2リーフ部分を形成し、前記活性表面は、その上に配置された複数の突出部を有し、前記突出部は、前記突出部が互いに接触して前記折り畳んだシート内で対向する前記活性表面を離間して保持するように形作られて前記表面上に配置され、
前記突出部は、前記第1リーフ部分の第1領域内及び前記第2リーフ部分の第1領域内に配置され、(a)前記第1リーフ部分の前記第1領域以外の前記第1リーフ部分の前記活性表面上、(b)前記第2リーフ部分の前記第1領域以外の前記第2リーフ部分の前記活性表面上、又は(c)両方に配置された複数の流れ突出部を更に含み、前記流れ突出部は、前記第1リーフ部分の前記第1領域内の前記突出部の高さ及び前記第2リーフ部分の前記第1領域内の前記突出部の高さの合計にほぼ等しい高さを有し、一方のリーフ部分上の流れ突出部は、前記濾過要素が螺旋状に巻かれたときに他方のリーフ上の流れ突出部と接触しない、膜。 - 前記突出部は、前記折線に垂直な前記膜の縁部に対して90度以外の角度で前記活性表面上に配置された複数の線状突出部を含む、請求項18に記載の膜。
- 前記角度は、40〜85度、又は100〜135度である、請求項19に記載の膜。
- 前記突出部は、各リーフ部分の前記活性表面から少なくとも0.065mmであるが、0.4mm以下だけ突出する、請求項19に記載の膜。
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- 2017-11-17 JP JP2019522827A patent/JP6719667B2/ja active Active
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KR102033982B1 (ko) | 2019-10-18 |
US20190030488A1 (en) | 2019-01-31 |
US10471391B2 (en) | 2019-11-12 |
WO2018094288A3 (en) | 2019-08-22 |
WO2018094288A2 (en) | 2018-05-24 |
EP3541623A4 (en) | 2020-06-24 |
US20210268444A1 (en) | 2021-09-02 |
US11040311B2 (en) | 2021-06-22 |
JP2019535499A (ja) | 2019-12-12 |
WO2018094287A1 (en) | 2018-05-24 |
CN110248802A (zh) | 2019-09-17 |
EP3541623A1 (en) | 2019-09-25 |
KR20190061087A (ko) | 2019-06-04 |
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