TW202410949A - Cylindrical porous filter comprising filter element with mixed pleat heights - Google Patents
Cylindrical porous filter comprising filter element with mixed pleat heights Download PDFInfo
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Abstract
Description
本發明係關於圓柱形多孔過濾器，其包括內芯及外籠，其中內芯與外籠之間具有環狀間隙，其中圓柱形中空多孔褶皺過濾元件配置於內芯與外籠之間的環狀間隙中，該環狀間隙具有寬度；其中圓柱形中空多孔褶皺過濾元件具有第一及第二末端表面，圓柱形中空多孔褶皺過濾元件包括複數個過濾元件群組，該複數個過濾元件群組中之各者包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，該第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺；其中第一橋及第二橋各自具有大於環狀間隙之寬度的高度；其中第一過濾元件子群組中之複數個縱向褶皺具有具最高高度之第一褶皺及具最短高度之第二縱向褶皺，其中第一縱向褶皺之高度在比第一橋之高度低25%至35%的範圍內，且第二縱向褶皺之高度在比第一橋之高度低65%至75%的範圍內；且其中第二過濾元件子群組中之至少一個縱向反褶皺具有在比第二橋之高度低25%至35%的範圍內的縱向反褶皺高度；第一橋、縱向褶皺、第二橋及縱向反褶皺處於覆疊狀態。The present invention relates to a cylindrical porous filter, which comprises an inner core and an outer cage, wherein an annular gap is provided between the inner core and the outer cage, wherein a cylindrical hollow porous pleated filter element is arranged in the annular gap between the inner core and the outer cage, and the annular gap has a width; wherein the cylindrical hollow porous pleated filter element has a first end surface and a second end surface, and the cylindrical hollow porous pleated filter element has a first end surface and a second end surface. The filter element comprises a plurality of filter element groups, each of the plurality of filter element groups comprising a first filter element subgroup, the first filter element subgroup comprising a first bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height, the first filter element subgroup alternating with a second filter element subgroup comprising a second bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height. followed by at least one longitudinal anti-pleat having a longitudinal anti-pleat height; wherein the first bridge and the second bridge each have a height greater than the width of the annular gap; wherein the plurality of longitudinal pleats in the first filter element subgroup have a first pleat having a highest height and a second longitudinal pleat having a shortest height, wherein the height of the first longitudinal pleat is 25% lower than the height of the first bridge to 35%, and the height of the second longitudinal fold is in the range of 65% to 75% lower than the height of the first bridge; and at least one longitudinal anti-fold in the second filter element subgroup has a longitudinal anti-fold height in the range of 25% to 35% lower than the height of the second bridge; the first bridge, the longitudinal folds, the second bridge and the longitudinal anti-folds are in an overlapping state.
此項技術中需要改善的褶皺過濾元件。There is a need in the art for improved pleated filter elements.
本發明提供改良先前技術之缺點中之至少一些。自下文所闡述之描述，本發明之此等及其他優點將為顯而易見的。The present invention provides at least some of the shortcomings of the improved prior art. These and other advantages of the present invention will be apparent from the description given below.
本發明之態樣提供一種圓柱形多孔過濾器，其包括內芯及外籠，其中內芯與外籠之間具有環狀間隙，其中圓柱形中空多孔過濾元件配置於內芯與外籠之間的環狀間隙中，該環狀間隙具有寬度；其中圓柱形中空多孔褶皺過濾元件具有第一及第二末端表面，圓柱形中空多孔褶皺過濾元件包括複數個過濾元件群組，該複數個過濾元件群組中之各者包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，該第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺；其中第一橋及第二橋各自具有大於環狀間隙之寬度的高度；其中第一過濾元件子群組中之複數個縱向褶皺具有具最高高度之第一褶皺及具最短高度之第二縱向褶皺，其中第一縱向褶皺之高度在比第一橋之高度低25%至35%的範圍內，且第二縱向褶皺之高度在比第一橋之高度低65%至75%的範圍內；且其中第二過濾元件子群組中之至少一個縱向反褶皺具有在比第二橋之高度低25%至35%的範圍內的縱向反褶皺高度；第一橋、縱向褶皺、第二橋及至少一個縱向反褶皺處於覆疊狀態。The present invention provides a cylindrical porous filter, which includes an inner core and an outer cage, wherein an annular gap is provided between the inner core and the outer cage, wherein a cylindrical hollow porous filter element is arranged in the annular gap between the inner core and the outer cage, and the annular gap has a width; wherein the cylindrical hollow porous pleated filter element has a first end surface and a second end surface, and the cylindrical hollow porous pleated filter element has a first end surface and a second end surface. The filter element comprises a plurality of filter element groups, each of the plurality of filter element groups comprising a first filter element subgroup, the first filter element subgroup comprising a first bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height, the first filter element subgroup alternating with a second filter element subgroup comprising a second bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height. Then at least one longitudinal anti-pleat having a longitudinal anti-pleat height; wherein the first bridge and the second bridge each have a height greater than the width of the annular gap; wherein the plurality of longitudinal pleats in the first filter element subgroup have a first pleat having a highest height and a second longitudinal pleat having a shortest height, wherein the height of the first longitudinal pleat is 25% to 35% lower than the height of the first bridge %, and the height of the second longitudinal fold is in the range of 65% to 75% lower than the height of the first bridge; and wherein at least one longitudinal anti-fold in the second filter element subgroup has a longitudinal anti-fold height in the range of 25% to 35% lower than the height of the second bridge; the first bridge, the longitudinal folds, the second bridge and the at least one longitudinal anti-fold are in an overlapping state.
在一態樣中，各第一橋具有前第一橋表面及後第一橋表面；縱向褶皺中之各者具有一對縱向褶皺支腿，縱向褶皺支腿中之各者具有第一縱向褶皺支腿表面及第二縱向褶皺支腿表面；各第二橋具有前第二橋表面及後第二橋表面；至少一個縱向反褶皺具有一對縱向反褶皺支腿，縱向反褶皺支腿中之各者具有第一縱向反褶皺支腿表面及第二縱向反褶皺支腿表面；第一橋、縱向褶皺、第二橋及至少一個縱向反褶皺處於覆疊狀態，其中一個縱向褶皺之縱向褶皺支腿表面與一個縱向褶皺之鄰接支腿的縱向褶皺支腿表面、鄰近縱向褶皺之縱向褶皺支腿表面、後第一橋表面及前第二橋表面中之至少一個任一者緊密接觸；且至少一個縱向反褶皺之縱向反褶皺支腿表面與一個縱向反褶皺之鄰接支腿的縱向反褶皺支腿表面、前第一橋表面及後第二橋表面中之至少一個任一者緊密接觸。In one embodiment, each first bridge has a front first bridge surface and a rear first bridge surface; each of the longitudinal pleats has a pair of longitudinal pleat legs, each of the longitudinal pleat legs has a first longitudinal pleat leg surface and a second longitudinal pleat leg surface; each second bridge has a front second bridge surface and a rear second bridge surface; at least one longitudinal reverse pleat has a pair of longitudinal reverse pleat legs, each of the longitudinal reverse pleat legs has a first longitudinal reverse pleat leg surface and a second longitudinal reverse pleat leg surface; the first bridge, the longitudinal pleats, the second bridge, and at least one longitudinal reverse pleat is in an overlapping state, wherein the longitudinal pleat leg surface of one longitudinal pleat is in close contact with at least one of the longitudinal pleat leg surface of an adjacent leg of a longitudinal pleat, the longitudinal pleat leg surface of an adjacent longitudinal pleat, the rear first bridge surface, and the front second bridge surface; and the longitudinal reverse pleat leg surface of at least one longitudinal reverse pleat is in close contact with at least one of the longitudinal reverse pleat leg surface of an adjacent leg of a longitudinal reverse pleat, the front first bridge surface, and the rear second bridge surface.
在另一態樣中，提供一種過濾流體之方法，該方法包括：使流體通過包括內芯及外籠之圓柱形多孔過濾器的態樣，其中內芯與外籠之間具有環狀間隙，其中圓柱形中空多孔過濾元件配置於內芯與外籠之間的環狀間隙中，該環狀間隙具有寬度；其中圓柱形中空多孔褶皺過濾元件具有第一及第二末端表面，圓柱形中空多孔褶皺過濾元件包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，該第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺；其中第一橋及第二橋各自具有大於環狀間隙之寬度的高度；其中第一過濾元件子群組中之複數個縱向褶皺具有具最高高度之第一褶皺及具最短高度之第二縱向褶皺，其中第一縱向褶皺之高度在比第一橋之高度低25%至35%的範圍內，且第二縱向褶皺之高度在比第一橋之高度低65%至75%的範圍內；且其中第二過濾元件子群組中之至少一個縱向反褶皺具有在比第二橋之高度低25%至35%的範圍內的縱向反褶皺高度；第一橋、縱向褶皺、第二橋及至少一個縱向反褶皺處於覆疊狀態。In another aspect, a method of filtering a fluid is provided, the method comprising: passing the fluid through an aspect of a cylindrical porous filter including an inner core and an outer cage, wherein the inner core and the outer cage have an annular gap therebetween, wherein a cylindrical hollow porous filter element is disposed in the annular gap between the inner core and the outer cage, the annular gap having a width; wherein the cylindrical hollow porous pleated filter element has first and second end surfaces, the cylindrical hollow porous pleated filter element comprising a first filter element subgroup, the first filter element subgroup comprising a first bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height, the first filter element subgroup alternating with a second filter element subgroup, the second filter element subgroup comprising a second bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height of At least one longitudinal anti-pleat having a longitudinal anti-pleat height; wherein the first bridge and the second bridge each have a height greater than the width of the annular gap; wherein the plurality of longitudinal pleats in the first filter element subgroup have a first pleat having a highest height and a second longitudinal pleat having a shortest height, wherein the height of the first longitudinal pleat is 25% to 35% lower than the height of the first bridge and the height of the second longitudinal fold is in the range of 65% to 75% lower than the height of the first bridge; and wherein at least one longitudinal anti-fold in the second filter element subgroup has a longitudinal anti-fold height in the range of 25% to 35% lower than the height of the second bridge; the first bridge, the longitudinal folds, the second bridge and at least one longitudinal anti-fold are in an overlapping state.
在另一態樣中，提供一種圓柱形中空多孔褶皺過濾元件，該圓柱形中空多孔褶皺過濾元件包括複數個過濾元件群組，該複數個過濾元件群組中之各者包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，該第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺；其中第一過濾元件子群組中之複數個縱向褶皺具有具最高高度之第一褶皺及具最短高度之第二縱向褶皺，其中第一縱向褶皺之高度在比第一橋之高度低25%至35%的範圍內，且第二縱向褶皺之高度在比第一橋之高度低65%至75%的範圍內；且其中第二過濾元件子群組中之至少一個縱向反褶皺具有在比第二橋之高度低25%至35%的範圍內的縱向反褶皺高度。In another aspect, a cylindrical hollow porous pleated filter element is provided, the cylindrical hollow porous pleated filter element comprising a plurality of filter element groups, each of the plurality of filter element groups comprising a first filter element subgroup, the first filter element subgroup comprising a first bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height, the first filter element subgroup alternating with a second filter element subgroup comprising a second bridge followed by at least one longitudinal anti-pleat having a longitudinal anti-pleat height. longitudinal anti-pleats; wherein the plurality of longitudinal pleats in the first filter element subgroup have a first pleat having a maximum height and a second longitudinal pleat having a shortest height, wherein the height of the first longitudinal pleat is in the range of 25% to 35% lower than the height of the first bridge, and the height of the second longitudinal pleat is in the range of 65% to 75% lower than the height of the first bridge; and wherein at least one longitudinal anti-pleat in the second filter element subgroup has a longitudinal anti-pleat height in the range of 25% to 35% lower than the height of the second bridge.
根據本發明之態樣，提供一種圓柱形多孔過濾器，其包括內芯及外籠，其中內芯與外籠之間具有環狀間隙，其中圓柱形中空多孔過濾元件配置於內芯與外籠之間的環狀間隙中，該環狀間隙具有寬度；其中圓柱形中空多孔褶皺過濾元件具有第一及第二末端表面，圓柱形中空多孔褶皺過濾元件包括複數個過濾元件群組，該複數個過濾元件群組中之各者包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，該第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺；其中第一橋及第二橋各自具有大於環狀間隙之寬度的高度；其中第一過濾元件子群組中之複數個縱向褶皺具有具最高高度之第一褶皺及具最短高度之第二縱向褶皺，其中第一縱向褶皺之高度在比第一橋之高度低25%至35%的範圍內，且第二縱向褶皺之高度在比第一橋之高度低65%至75%的範圍內；且其中第二過濾元件子群組中之至少一個縱向反褶皺具有在比第二橋之高度低25%至35%的範圍內的縱向反褶皺高度；第一橋、縱向褶皺、第二橋及至少一個縱向反褶皺處於覆疊狀態。According to an aspect of the present invention, a cylindrical porous filter is provided, which includes an inner core and an outer cage, wherein an annular gap is provided between the inner core and the outer cage, wherein a cylindrical hollow porous filter element is arranged in the annular gap between the inner core and the outer cage, and the annular gap has a width; wherein the cylindrical hollow porous pleated filter element has a first end surface and a second end surface, and the cylindrical hollow porous pleated filter element has a first end surface and a second end surface. The aperture pleated filter element comprises a plurality of filter element groups, each of the plurality of filter element groups comprising a first filter element subgroup comprising a first bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height, the first filter element subgroup alternating with a second filter element subgroup comprising a second bridge, followed by at least one longitudinal anti-pleat having a longitudinal anti-pleat height; wherein the first bridge and the second bridge each have a height greater than the width of the annular gap; wherein the plurality of longitudinal pleats in the first filter element subgroup have a first pleat having a highest height and a second longitudinal pleat having a shortest height, wherein the height of the first longitudinal pleat is 25% to 3% lower than the height of the first bridge 5%, and the height of the second longitudinal fold is in the range of 65% to 75% lower than the height of the first bridge; and wherein at least one longitudinal anti-fold in the second filter element subgroup has a longitudinal anti-fold height in the range of 25% to 35% lower than the height of the second bridge; the first bridge, the longitudinal folds, the second bridge and the at least one longitudinal anti-fold are in an overlapping state.
在另一態樣中，提供一種圓柱形中空多孔褶皺過濾元件，該圓柱形中空多孔褶皺過濾元件包括複數個過濾元件群組，該複數個過濾元件群組中之各者包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，該第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺；其中第一過濾元件子群組中之複數個縱向褶皺具有具最高高度之第一褶皺及具最短高度之第二縱向褶皺，其中第一縱向褶皺之高度在比第一橋之高度低25%至35%的範圍內，且第二縱向褶皺之高度在比第一橋之高度低65%至75%的範圍內；且其中第二過濾元件子群組中之至少一個縱向反褶皺具有在比第二橋之高度低25%至35%的範圍內的縱向反褶皺高度。In another aspect, a cylindrical hollow porous pleated filter element is provided, the cylindrical hollow porous pleated filter element comprising a plurality of filter element groups, each of the plurality of filter element groups comprising a first filter element subgroup, the first filter element subgroup comprising a first bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height, the first filter element subgroup alternating with a second filter element subgroup comprising a second bridge followed by at least one longitudinal anti-pleat having a longitudinal anti-pleat height. longitudinal anti-pleats; wherein the plurality of longitudinal pleats in the first filter element subgroup have a first pleat having a maximum height and a second longitudinal pleat having a shortest height, wherein the height of the first longitudinal pleat is in the range of 25% to 35% lower than the height of the first bridge, and the height of the second longitudinal pleat is in the range of 65% to 75% lower than the height of the first bridge; and wherein at least one longitudinal anti-pleat in the second filter element subgroup has a longitudinal anti-pleat height in the range of 25% to 35% lower than the height of the second bridge.
在另一態樣中，提供一種過濾流體之方法，該方法包括：使流體通過包括內芯及外籠之圓柱形多孔過濾器的態樣，其中內芯與外籠之間具有環狀間隙，其中圓柱形中空多孔過濾元件配置於內芯與外籠之間的環狀間隙中，該環狀間隙具有寬度；其中圓柱形中空多孔褶皺過濾元件具有第一及第二末端表面，圓柱形中空多孔褶皺過濾元件包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，該第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺；其中第一橋及第二橋各自具有大於環狀間隙之寬度的高度；其中第一過濾元件子群組中之複數個縱向褶皺具有具最高高度之第一褶皺及具最短高度之第二縱向褶皺，其中第一縱向褶皺之高度在比第一橋之高度低25%至35%的範圍內，且第二縱向褶皺之高度在比第一橋之高度低65%至75%的範圍內；且其中第二過濾元件子群組中之至少一個縱向反褶皺具有在比第二橋之高度低25%至35%的範圍內的縱向反褶皺高度；第一橋、縱向褶皺、第二橋及至少一個縱向反褶皺處於覆疊狀態；較佳地，該方法包含獲得經過濾流體。In another embodiment, a method for filtering a fluid is provided, the method comprising: passing the fluid through a cylindrical porous filter including an inner core and an outer cage, wherein an annular gap is provided between the inner core and the outer cage, wherein a cylindrical hollow porous filter element is disposed in the annular gap between the inner core and the outer cage, and the annular gap has a width; wherein the cylindrical hollow porous pleated filter element has a The cylindrical hollow porous pleated filter element comprises a first filter element subgroup, the first filter element subgroup comprising a first bridge followed by a plurality of longitudinal pleats having a longitudinal pleat height, the first filter element subgroup alternating with a second filter element subgroup, the second filter element subgroup comprising a second bridge followed by a plurality of longitudinal anti-pleat heights wherein the first bridge and the second bridge each have a height greater than the width of the annular gap; wherein the plurality of longitudinal folds in the first filter element subgroup have a first fold with a maximum height and a second longitudinal fold with a shortest height, wherein the height of the first longitudinal fold is in the range of 25% to 35% lower than the height of the first bridge, and the second longitudinal fold The height of the first bridge is in the range of 65% to 75% lower than the height of the first bridge; and wherein at least one longitudinal anti-pleat in the second filter element subgroup has a longitudinal anti-pleat height in the range of 25% to 35% lower than the height of the second bridge; the first bridge, the longitudinal pleats, the second bridge and the at least one longitudinal anti-pleat are in an overlapping state; preferably, the method includes obtaining a filtered fluid.
該方法之態樣可包含由外而內流動，其中待過濾流體自外籠經由過濾元件流動至內芯中，或包含由內而外流動，其中流體自內芯經由過濾元件流動至外籠。Aspects of the method may include outside-in flow, wherein the fluid to be filtered flows from an outer cage through a filter element into an inner core, or inside-out flow, wherein the fluid flows from an inner core through a filter element into an outer cage.
在較佳態樣中，第一不可滲透端蓋連接至過濾元件之第一末端表面。In a preferred embodiment, a first impermeable end cap is connected to the first end surface of the filter element.
在一態樣中，各第一橋具有前第一橋表面及後第一橋表面；縱向褶皺中之各者具有一對縱向褶皺支腿，縱向褶皺支腿中之各者具有第一縱向褶皺支腿表面及第二縱向褶皺支腿表面；各第二橋具有前第二橋表面及後第二橋表面；至少一個縱向反褶皺具有一對縱向反褶皺支腿，縱向反褶皺支腿中之各者具有第一縱向反褶皺支腿表面及第二縱向反褶皺支腿表面；第一橋、縱向褶皺、第二橋及至少一個縱向反褶皺處於覆疊狀態，其中一個縱向褶皺之縱向褶皺支腿表面與一個縱向褶皺之鄰接支腿的縱向褶皺支腿表面、鄰近縱向褶皺之縱向褶皺支腿表面、後第一橋表面及前第二橋表面中之至少一個任一者緊密接觸；且至少一個縱向反褶皺之縱向反褶皺支腿表面與一個縱向反褶皺之鄰接支腿的縱向反褶皺支腿表面、前第一橋表面及後第二橋表面中之至少一個任一者緊密接觸。In one embodiment, each first bridge has a front first bridge surface and a rear first bridge surface; each of the longitudinal pleats has a pair of longitudinal pleat legs, each of the longitudinal pleat legs has a first longitudinal pleat leg surface and a second longitudinal pleat leg surface; each second bridge has a front second bridge surface and a rear second bridge surface; at least one longitudinal reverse pleat has a pair of longitudinal reverse pleat legs, each of the longitudinal reverse pleat legs has a first longitudinal reverse pleat leg surface and a second longitudinal reverse pleat leg surface; the first bridge, the longitudinal pleats, the second bridge, and at least one longitudinal reverse pleat is in an overlapping state, wherein the longitudinal pleat leg surface of one longitudinal pleat is in close contact with at least one of the longitudinal pleat leg surface of an adjacent leg of a longitudinal pleat, the longitudinal pleat leg surface of an adjacent longitudinal pleat, the rear first bridge surface, and the front second bridge surface; and the longitudinal reverse pleat leg surface of at least one longitudinal reverse pleat is in close contact with at least one of the longitudinal reverse pleat leg surface of an adjacent leg of a longitudinal reverse pleat, the front first bridge surface, and the rear second bridge surface.
在一些態樣中，一個縱向褶皺之縱向褶皺支腿的第二（內部）縱向褶皺支腿表面與一個縱向褶皺之鄰接支腿的第二（內部）縱向褶皺支腿表面緊密接觸，且一個縱向褶皺之縱向褶皺支腿的第一（外部）縱向褶皺支腿表面與鄰近縱向褶皺之後第一橋表面或前第二橋表面或第一（外部）縱向褶皺支腿表面緊密接觸，及/或至少一個縱向反褶皺之縱向反褶皺支腿的第二（內部）縱向反褶皺支腿表面與至少一個縱向反褶皺之鄰接支腿的第二（內部）縱向反褶皺支腿表面緊密接觸，且至少一個縱向反褶皺之縱向反褶皺支腿的第一（外部）縱向反褶皺支腿表面可與後第二橋表面或前第一橋表面緊密接觸。In some embodiments, a second (inner) longitudinal pleat leg surface of a longitudinal pleat leg of a longitudinal pleat is in close contact with a second (inner) longitudinal pleat leg surface of an adjacent leg of a longitudinal pleat, and a first (outer) longitudinal pleat leg surface of a longitudinal pleat leg of a longitudinal pleat is in close contact with a rear first bridge surface or a front second bridge surface or a first (outer) longitudinal pleat leg surface of an adjacent longitudinal pleat. The second (inner) longitudinal reverse pleat leg surface of at least one longitudinal reverse pleat is in close contact with the second (inner) longitudinal reverse pleat leg surface of at least one adjacent leg of the longitudinal reverse pleat, and the first (outer) longitudinal reverse pleat leg surface of at least one longitudinal reverse pleat may be in close contact with the rear second bridge surface or the front first bridge surface.
在一些態樣中，第一橋具有在比內芯與外籠之間的環狀間隙大10%至25%之範圍內的高度，及/或第二橋具有在比內芯與外籠之間的環狀間隙大10%至25%之範圍內的高度。In some embodiments, the first bridge has a height in the range of 10% to 25% greater than the annular gap between the inner core and the outer cage, and/or the second bridge has a height in the range of 10% to 25% greater than the annular gap between the inner core and the outer cage.
有利地，過濾元件、包含過濾元件之過濾器及包含過濾器之過濾裝置可具有較低包裝密度及較高滲透率，同時維持所要壓差且減小膜面積，同時減小邊緣流動阻力。Advantageously, filter elements, filters comprising filter elements, and filter devices comprising filter elements can have lower packing density and higher permeability while maintaining a desired pressure differential and reducing membrane area while reducing edge flow resistance.
根據本發明之態樣的過濾元件之具體實例通常為中空圓柱形形式且包括褶皺多孔介質，褶皺多孔介質包含褶皺高度之混合，其中複數個縱向褶皺面向內（尖端面向內芯；高度(I)H1至(I)H2）且至少一個縱向反褶皺面向外（尖端面向外籠；反褶皺；高度(O)H1）。Specific embodiments of filter elements according to aspects of the present invention are typically hollow cylindrical in form and include a pleated porous medium comprising a mixture of pleat heights wherein a plurality of longitudinal pleats face inward (with tips facing the inner core; heights (I)H1 to (I)H2) and at least one longitudinal reverse pleat faces outward (with tips facing the outer cage; reverse pleat; height (O)H1).
現將在下文更詳細地描述本發明之組件中的各者，其中類似組件具有類似參考編號。Each of the components of the present invention will now be described in more detail below, where like components have like reference numbers.
圖1以圖解方式繪示（其中為了易於參考，將褶皺展示為在壓縮之前為展開的以形成褶皺多孔過濾元件）褶皺圓柱形中空多孔過濾元件3000之態樣配置於穿孔內芯800與外籠900之間的環狀間隙G中，該環狀間隙具有寬度W；該褶皺圓柱形中空多孔過濾元件具有縱向軸線（參見圖3）以及第一及第二末端表面，圓柱形中空多孔褶皺過濾元件包括複數個過濾元件群組GRP，FIG. 1 schematically shows (for ease of reference, the pleats are shown as unfolded before compression to form a pleated porous filter element) a pleated cylindrical hollow porous filter element 3000 disposed in an annular gap G between a perforated inner core 800 and an outer cage 900, the annular gap having a width W; the pleated cylindrical hollow porous filter element having a longitudinal axis (see FIG. 3 ) and first and second end surfaces, the cylindrical hollow porous pleated filter element comprising a plurality of filter element groups GRP,
複數個過濾元件群組GRP中之各者包括第一過濾元件子群組SG1，該第一過濾元件子群組包括第一橋B1（具有前第一橋表面及後第一橋表面），其後接著具有縱向褶皺高度之複數個縱向褶皺100A、200A，各第一過濾元件子群組SG1與第二過濾元件子群組SG2交替，該第二過濾元件子群組包括第二橋B2（具有前第二橋表面及後第二橋表面），其後接著具有縱向褶皺高度之至少一個縱向反褶皺100B；Each of the plurality of filter element groups GRP comprises a first filter element subgroup SG1, the first filter element subgroup comprising a first bridge B1 (having a front first bridge surface and a rear first bridge surface), followed by a plurality of longitudinal pleats 100A, 200A having a longitudinal pleat height, each first filter element subgroup SG1 alternates with a second filter element subgroup SG2, the second filter element subgroup comprising a second bridge B2 (having a front second bridge surface and a rear second bridge surface), followed by at least one longitudinal anti-pleat 100B having a longitudinal pleat height;
其中第一橋B1及第二橋B2具有大於環狀間隙之寬度的各別高度BH1、BH2；The first bridge B1 and the second bridge B2 have respective heights BH1 and BH2 greater than the width of the annular gap;
其中第一過濾元件子群組SG1中之複數個縱向褶皺具有具最高高度(I)H1之第一褶皺及具最短高度(I)H2之第二縱向褶皺，其中第一縱向褶皺之高度(I)H1在比第一橋B1之高度BH1低25%至35%的範圍內，且第二縱向褶皺之高度(I)H2在比第一橋B1之高度BH1低65%至75%的範圍內；且wherein the plurality of longitudinal folds in the first filter element subgroup SG1 have a first fold having a maximum height (I) H1 and a second longitudinal fold having a shortest height (I) H2, wherein the height (I) H1 of the first longitudinal fold is in a range of 25% to 35% lower than the height BH1 of the first bridge B1, and the height (I) H2 of the second longitudinal fold is in a range of 65% to 75% lower than the height BH1 of the first bridge B1; and
其中第二過濾元件子群組SG2中之至少一個縱向反褶皺具有在比第二橋B2之高度BH2低25%至35%的範圍內的縱向反褶皺高度(O)H1；wherein at least one longitudinal anti-fold in the second filter element subgroup SG2 has a longitudinal anti-fold height (O) H1 in the range of 25% to 35% lower than a height BH2 of the second bridge B2;
第一橋、縱向褶皺、第二橋及至少一個縱向褶皺處於覆疊狀態（展示於圖2B及圖3中）。The first bridge, the longitudinal folds, the second bridge and at least one longitudinal fold are in an overlapping state (shown in FIG. 2B and FIG. 3 ).
根據此所繪示態樣，過濾元件中之群組及子群組具有不同設計及高度圖案（連續重複的單元及非對稱定向），亦即，群組=子群組1：B1、(I)H1、(I)H2；子群組2：B2、(O)H1；群組=子群組1：B1、(I)H1、(I)H2；子群組2：B2、(O)H1；其中過濾元件具有任何合適數目個重複群組。According to the illustrated embodiment, the groups and subgroups in the filter element have different designs and height patterns (continuously repeated units and asymmetric orientations), that is, Group = Subgroup 1: B1, (I) H1, (I) H2; Subgroup 2: B2, (O) H1; Group = Subgroup 1: B1, (I) H1, (I) H2; Subgroup 2: B2, (O) H1; wherein the filter element has any suitable number of repeated groups.
各褶皺包括一對支腿，各支腿具有內表面及外表面（因此，支腿具有相對內表面及相對外表面）、支腿長度及冠部或尖端，在該冠部或尖端處，支腿相接（鄰接）且褶皺摺疊。各支腿具有鄰接芯（對於縱向反褶皺）或籠（縱向褶皺）之根部，且褶皺分別自芯或籠軸向延伸。Each pleat includes a pair of legs, each leg having an inner surface and an outer surface (thus, the legs have opposing inner surfaces and opposing outer surfaces), a leg length, and a crown or tip where the legs meet (abut) and the pleat folds. Each leg has a root adjacent to the core (for longitudinal reverse pleats) or cage (longitudinal pleats), and the pleat extends axially from the core or cage, respectively.
在圖1所展示之態樣中，褶皺之各支腿的長度(I)H1彼等相等，褶皺之各支腿的長度(I)H2彼此相等，且褶皺之各支腿的長度(O)H1彼此相等，且該對褶皺中之各支腿的長度(I)H2及(O)H1彼此相等。In the embodiment shown in FIG. 1 , the lengths (I)H1 of the legs of the pleats are equal to each other, the lengths (I)H2 of the legs of the pleats are equal to each other, and the lengths (O)H1 of the legs of the pleats are equal to each other, and the lengths (I)H2 and (O)H1 of the legs in the pair of pleats are equal to each other.
如下文將更詳細地論述且在例如圖2B及圖3中所展示，所形成的過濾元件將具有覆疊褶皺。因此，第一橋、縱向褶皺、第二橋及至少一個縱向反褶皺處於覆疊狀態，其中一個縱向褶皺之縱向褶皺支腿表面與一個縱向褶皺之鄰接支腿的縱向褶皺支腿表面、鄰近縱向褶皺之縱向褶皺支腿表面、後第一橋表面及前第二橋表面中之至少一個任一者緊密接觸；且至少一個縱向反褶皺之縱向反褶皺支腿表面與一個縱向反褶皺之鄰接支腿的縱向反褶皺支腿表面、前第一橋表面及後第二橋表面中之至少一個任一者緊密接觸。As will be discussed in more detail below and shown, for example, in FIGS. 2B and 3 , the resulting filter element will have overlapping pleats. Therefore, the first bridge, the longitudinal pleats, the second bridge and at least one longitudinal reverse pleat are in an overlapping state, wherein the longitudinal pleat leg surface of one longitudinal pleat is in close contact with at least one of the longitudinal pleat leg surface of an adjacent leg of a longitudinal pleat, the longitudinal pleat leg surface of an adjacent longitudinal pleat, the rear first bridge surface and the front second bridge surface; and the longitudinal reverse pleat leg surface of at least one longitudinal reverse pleat is in close contact with at least one of the longitudinal reverse pleat leg surface of an adjacent leg of a longitudinal reverse pleat, the front first bridge surface and the rear second bridge surface.
典型地，一個縱向反褶皺之各第二（內部）縱向反褶皺支腿表面與一個縱向反褶皺之鄰接支腿的第二（內部）縱向反褶皺支腿表面緊密接觸，且一個縱向反褶皺之第一（外部）反褶皺支腿表面亦可與後第一橋表面或前第二橋表面緊密接觸，及/或一個縱向褶皺之各第二（內部）縱向褶皺支腿表面與一個縱向褶皺之鄰接支腿的第二（內部）縱向褶皺支腿表面緊密接觸，且一個縱向褶皺之第一（外部）褶皺支腿表面亦可與鄰近縱向褶皺之第一（外部）縱向褶皺支腿表面、前第一橋表面或後第二橋表面緊密接觸。Typically, each second (inner) longitudinal reverse pleat leg surface of a longitudinal reverse pleat is in close contact with the second (inner) longitudinal reverse pleat leg surface of an adjacent leg of a longitudinal reverse pleat, and the first (outer) reverse pleat leg surface of a longitudinal reverse pleat may also be in close contact with the rear first bridge surface or the front second bridge surface, and/or a longitudinal reverse pleat. Each second (inner) longitudinal pleat leg surface of the pleats is in close contact with the second (inner) longitudinal pleat leg surface of an adjacent leg of a longitudinal pleat, and the first (outer) pleat leg surface of a longitudinal pleat may also be in close contact with the first (outer) longitudinal pleat leg surface, the front first bridge surface or the rear second bridge surface of an adjacent longitudinal pleat.
繪示性地，使用圖1中所繪示之態樣用於參考，在覆疊狀態下，後第一橋表面將與後續縱向褶皺（100A）之第一縱向褶皺支腿的第一（外部）縱向褶皺支腿表面緊密接觸，第一縱向褶皺支腿之第二（內部）縱向褶皺支腿表面將與彼縱向褶皺（100A）之鄰接第二縱向褶皺支腿的第二（內部）縱向褶皺支腿表面緊密接觸。彼縱向褶皺（100A）之第二縱向褶皺支腿的第一（外部）縱向褶皺支腿表面將與後續（鄰近）縱向褶皺（200A）之第一縱向褶皺支腿的第一（外部）縱向褶皺支腿表面緊密接觸，等等，參看圖1，例如，前第二橋表面將與縱向褶皺（100A）之後（鄰近於該縱向褶皺）的縱向褶皺（200A）之第二縱向褶皺支腿的第一（外部）縱向褶皺支腿表面緊密接觸，且後第二橋表面將與後續（鄰近）縱向反褶皺（100B）之第一縱向反褶皺支腿的第一（外部）縱向反褶皺支腿表面緊密接觸。Illustratively, using the aspect shown in FIG. 1 for reference, in the overlapping state, the rear first bridge surface will be in close contact with the first (outer) longitudinal pleat leg surface of the first longitudinal pleat leg of the subsequent longitudinal pleat (100A), and the second (inner) longitudinal pleat leg surface of the first longitudinal pleat leg will be in close contact with the second (inner) longitudinal pleat leg surface of the adjacent second longitudinal pleat leg of the longitudinal pleat (100A). The first (outer) longitudinal pleat leg surface of the second longitudinal pleat leg of the longitudinal pleat (100A) will be in close contact with the first (outer) longitudinal pleat leg surface of the first longitudinal pleat leg of the subsequent (adjacent) longitudinal pleat (200A), and so on. Referring to FIG. 1, for example, the front second bridge surface will be in close contact with the longitudinal pleat (100A). ) is in close contact with the first (outer) longitudinal pleat leg surface of the second longitudinal pleat leg of the subsequent (adjacent) longitudinal pleat (200A), and the second bridge surface is in close contact with the first (outer) longitudinal reverse pleat leg surface of the first longitudinal reverse pleat leg of the subsequent (adjacent) longitudinal reverse pleat (100B).
使用圖1、圖2B、圖2C及圖3用於參考（圖2B展示具有覆疊褶皺之完全壓縮過濾元件）中，圓柱形穿孔內芯800沿著褶皺多孔過濾元件3000之內部周邊同軸地安置，且圓柱形籠900沿著過濾元件之外部周邊安置，且環狀間隙G存在於內芯與外籠之間，其中褶皺多孔過濾元件配置於內芯與外籠之間的間隙中，該間隙具有寬度W。Using Figures 1, 2B, 2C and 3 for reference (Figure 2B shows a fully compressed filter element with overlapping pleats), a cylindrical perforated inner core 800 is coaxially disposed along the inner periphery of a pleated porous filter element 3000, and a cylindrical cage 900 is disposed along the outer periphery of the filter element, and an annular gap G exists between the inner core and the outer cage, wherein the pleated porous filter element is disposed in the gap between the inner core and the outer cage, the gap having a width W.
第一橋B1及第二橋B2具有大於環狀間隙之寬度的各別高度BH1、BH2，且因此橋B1及B2各自具有作為覆疊狀態之部分面向外籠及內芯彎曲的末端。在一些態樣中，第一橋具有在比內芯與外籠之間的環狀間隙大10%至25%之範圍內的高度，及/或第二橋具有在比內芯與外籠之間的環狀間隙之寬度大10%至25%之範圍內的高度。The first bridge B1 and the second bridge B2 have respective heights BH1, BH2 greater than the width of the annular gap, and thus the bridges B1 and B2 each have an end bent toward the outer cage and the inner core as a portion of the overlapping state. In some embodiments, the first bridge has a height in the range of 10% to 25% greater than the annular gap between the inner core and the outer cage, and/or the second bridge has a height in the range of 10% to 25% greater than the width of the annular gap between the inner core and the outer cage.
縱向褶皺及縱向反褶皺之高度各自小於內芯與外籠之間的環狀間隙之寬度。The heights of the longitudinal pleats and the longitudinal counter-pleats are each smaller than the width of the annular gap between the inner core and the outer cage.
如圖2B中所展示，在經組裝過濾元件中，作為覆疊褶皺之部分，縱向褶皺接近其尖端（面向內芯）彎曲，且縱向反褶皺接近其尖端（面向外籠）彎曲。As shown in FIG. 2B , in the assembled filter element, as part of the overlapping pleats, the longitudinal pleats are bent near their tips (facing the inner core), and the longitudinal counter-pleats are bent near their tips (facing the outer cage).
褶皺之鄰接支腿的相對表面無需在過濾元件之整個軸向長度上緊密接觸，但緊密接觸區在軸向方向上之長度愈大，則更有效地使用過濾元件3000之內部周邊與外部周邊之間的空間。因此，鄰接支腿在連續區上緊密接觸，該連續區延伸過濾元件3000之軸向長度的至少大約50%，在一些態樣中，至少大約75%或大約95至100%。The opposing surfaces of adjacent legs of the pleats need not be in close contact over the entire axial length of the filter element, but the greater the length of the close contact area in the axial direction, the more efficiently the space between the inner periphery and the outer periphery of the filter element 3000 is used. Thus, adjacent legs are in close contact over a continuous area that extends at least about 50%, in some aspects, at least about 75%, or about 95-100% of the axial length of the filter element 3000.
對可用於本發明之多孔過濾元件中的多孔過濾介質500（參見圖3）之類型不存在特定限制，且其可根據待過濾流體及所要過濾特性進行選擇。較佳地，多孔過濾介質/過濾元件包括聚合介質。過濾元件/過濾器可用以過濾各種行業中所使用的流體，諸如液體、氣體或其混合物。舉例而言，過濾元件/過濾器可用以過濾微電子行業中用於濕式蝕刻清潔（例如，使用液體化學品或蝕刻劑以自晶圓移除材料的材料移除製程）之製程流體。化學機械平坦化（chemical-mechanical planarization；CMP），用於產生超純水（ultra pure water；UPW）且用於微影模組，且流體可包含例如標準清潔1（SC1）流體、標準清潔2（SC2）流體、異丙醇（IPA；包含熱IPA）、硫酸（H 2SO 4，包含熱H 2SO 4）、氫氧化四甲基四級銨（TMAH；包含熱TAMH）、過氧化氫（H 2O 2，包含熱H 2O 2）、氫氧化銨（NH 4OH；包含熱NH 4OH）及氟化氫（HF；包含熱HF）以及其他，該等流體獨立地使用或彼此混合。 There is no particular limitation on the type of porous filter medium 500 (see FIG. 3 ) that can be used in the porous filter element of the present invention, and it can be selected based on the fluid to be filtered and the desired filtering characteristics. Preferably, the porous filter medium/filter element comprises a polymeric medium. The filter element/filter can be used to filter fluids used in various industries, such as liquids, gases, or mixtures thereof. For example, the filter element/filter can be used to filter process fluids used for wet etch cleaning (e.g., a material removal process that uses liquid chemicals or etchants to remove material from a wafer) in the microelectronics industry. Chemical-mechanical planarization (CMP) is used to generate ultra pure water (UPW) and is used in a lithography module, and the fluid may include, for example, standard clean 1 (SC1) fluid, standard clean 2 (SC2) fluid, isopropyl alcohol (IPA; including hot IPA), sulfuric acid (H 2 SO 4 , including hot H 2 SO 4 ), tetramethylammonium hydroxide (TMAH; including hot TAMH), hydrogen peroxide (H 2 O 2 , including hot H 2 O 2 ), ammonium hydroxide (NH 4 OH; including hot NH 4 OH) and hydrogen fluoride (HF; including hot HF) and others, which are used independently or mixed with each other.
典型地，褶皺多孔過濾元件包括或為膜。膜可具有任何合適的孔隙結構，例如孔隙大小（例如，如由起泡點或由例如美國專利4,340,479中所描述之K L所證明，或由毛細凝聚流動式孔隙測定法（capillary condensation flow porometry）所證明）、平均孔隙大小；平均流動孔隙（mean flow pore；MFP）大小（例如，當使用孔率儀表徵時，例如Porvair孔率儀（英國諾福克之Porvair公共有限公司）或以商標POROLUX（Porometer.com；比利時）購得之孔率儀）、孔隙等級、孔隙直徑（例如，當使用例如美國專利4,925,572中所描述之經修改OSU F2測試表徵時），或移除等級介質。所使用的孔隙結構取決於待利用粒子之大小、待處理流體之組成及所處理流體之所要流出程度。在一些態樣中，膜具有（取決於應用）在10 nm至150 nm之範圍內的平均孔隙大小。 Typically, the pleated porous filter element comprises or is a membrane. The membrane may have any suitable pore structure, such as pore size (e.g., as evidenced by bubble point or by K L as described, for example, in U.S. Pat. No. 4,340,479, or by capillary condensation flow porometry), mean pore size; mean flow pore (MFP) size (e.g., when characterized using a porosimeter, such as Porvair Porosimeter (Porvair plc, Norfolk, UK) or a porosimeter available under the trademark POROLUX (Porometer.com; Belgium)), pore grade, pore diameter (e.g., when characterized using a modified OSU F2 test as described, for example, in U.S. Pat. No. 4,925,572), or removal grade media. The pore structure used depends on the size of the particles to be utilized, the composition of the fluid to be processed, and the desired effluent level of the processed fluid. In some aspects, the membrane has an average pore size (depending on the application) in the range of 10 nm to 150 nm.
多孔膜可具有任何所要的臨界潤濕表面張力（critical wetting surface tension；CWST，如例如美國專利4,925,572中所定義）。如此項技術中已知的，可選擇CWST，例如，如另外在例如美國專利5,152,905、5,443,743、5,472,621及6,074,869中所揭示。典型地，膜具有在28達因/公分（28×10 -5N/cm）至34達因/公分（34×10 -5N/cm）之範圍內的CWST。 The porous membrane can have any desired critical wetting surface tension (CWST, as defined, for example, in U.S. Pat. No. 4,925,572). The CWST can be selected as known in the art, for example, as also disclosed, for example, in U.S. Pat. Nos. 5,152,905, 5,443,743, 5,472,621, and 6,074,869. Typically, the membrane has a CWST in the range of 28 dynes/cm (28× 10-5 N/cm) to 34 dynes/cm (34× 10-5 N/cm).
範例性膜揭示於美國專利4,702,840及4,900,449中。其他膜，包含揭示於美國專利4,906,374、4,886,836、4,964,989、5,019,260、4,340,479、4,855,163、4,744,132、4,707,266、4,203,848、4,618,533、6,039,872、6,780,327、6,783,937及7,189,322中之彼等膜，亦可為合適的。範例性膜包含但不限於耐綸膜、聚四氟乙烯（PTFE）膜、高密度聚乙烯（HDPE）膜及高度不對稱聚芳碸（HAPAS）膜。範例性膜可個別地使用或結合具有相同或不同特性之任何其他範例性膜使用。Exemplary membranes are disclosed in U.S. Patents 4,702,840 and 4,900,449. Other membranes, including those disclosed in U.S. Patents 4,906,374, 4,886,836, 4,964,989, 5,019,260, 4,340,479, 4,855,163, 4,744,132, 4,707,266, 4,203,848, 4,618,533, 6,039,872, 6,780,327, 6,783,937, and 7,189,322, may also be suitable. Exemplary membranes include, but are not limited to, nylon membranes, polytetrafluoroethylene (PTFE) membranes, high-density polyethylene (HDPE) membranes, and highly asymmetric polyarylether (HAPAS) membranes. The exemplary films may be used individually or in combination with any other exemplary films having the same or different properties.
過濾器可包含可具有不同結構及/或功能之額外元件、層或組件，例如以下各者中之任何一或多者中的至少一者：預濾件、支撐件、排流器、間隔及緩衝器。The filter may include additional elements, layers or components that may have different structures and/or functions, such as at least one of any one or more of the following: a pre-filter, a support, a drain, a spacer and a buffer.
舉例而言，在圖3中所展示之過濾器3100的態樣中，除沿著過濾元件之內部周邊同軸地安置的圓柱形穿孔內芯800及沿著過濾元件3000之外部周邊安置的圓柱形外籠900以外，所繪示過濾器亦包含接觸過濾元件之多孔介質500之第一（例如，上游）表面的第一褶皺濾網501及接觸過濾元件之多孔介質500之第二（例如，下游）表面的第二褶皺濾網502，從而提供三層複合物。在過濾器包含第一及/或第二褶皺濾網之彼等態樣中，所提及的褶皺表面之間的接觸係指過濾元件之所提及表面上的濾網之間的接觸，例如，一個縱向反褶皺之第二（內部）縱向反褶皺支腿表面與一個縱向反褶皺之鄰接支腿的第二（內部）縱向反褶皺支腿表面緊密接觸，係指一個縱向反褶皺之第二（內部）縱向反褶皺支腿表面上的濾網與一個縱向反褶皺之鄰接支腿的第二（內部）縱向反褶皺支腿表面上之濾網緊密接觸。For example, in the embodiment of the filter 3100 shown in FIG. 3 , in addition to the cylindrical perforated inner core 800 coaxially disposed along the inner periphery of the filter element and the cylindrical outer cage 900 disposed along the outer periphery of the filter element 3000, the illustrated filter also includes a first pleated filter 501 contacting a first (e.g., upstream) surface of the porous medium 500 of the filter element and a second pleated filter 502 contacting a second (e.g., downstream) surface of the porous medium 500 of the filter element, thereby providing a three-layer composite. In those embodiments in which the filter includes first and/or second pleated filters, the contact between the pleated surfaces mentioned refers to the contact between the filters on the mentioned surfaces of the filter element, for example, the second (inner) longitudinal reverse pleat leg surface of one longitudinal reverse pleat is in close contact with the second (inner) longitudinal reverse pleat leg surface of an adjacent leg of a longitudinal reverse pleat, which means that the filter on the second (inner) longitudinal reverse pleat leg surface of one longitudinal reverse pleat is in close contact with the filter on the second (inner) longitudinal reverse pleat leg surface of an adjacent leg of a longitudinal reverse pleat.
形成過濾元件之組件（濾網、過濾介質）可藉由習知過濾器製造技術在波紋化之前或與波紋化同時地形成為複合物。The components forming the filter element (filter mesh, filter medium) can be formed as a composite by known filter manufacturing techniques before or simultaneously with corrugation.
濾網（術語「濾網」亦包含「篩網」）防止過濾介質之相對表面彼此形成接觸，且使得當褶皺處於覆疊狀態時，流體能夠均勻地流動至過濾介質之表面的實質上所有部分或自過濾介質之表面的實質上所有部分流動。因此，實際上過濾介質之整個表面區域可有效地用於過濾。The filter (the term "filter" also includes "screen") prevents opposing surfaces of the filter medium from coming into contact with each other and enables fluid to flow evenly to or from substantially all portions of the surface of the filter medium when the pleats are in an overlapping state. Thus, substantially the entire surface area of the filter medium can be effectively used for filtering.
多種濾網適合用於本發明之態樣中。濾網可由具有合適的沿邊流動特性之任何材料製成，亦即，對在平行於層表面之方向上流經層的流體具有合適阻力。排流網之沿邊流阻較佳足夠低使得排流層中之壓降小於過濾介質上之壓降，藉此提供流體沿著過濾介質之表面的均勻分佈。A variety of filters are suitable for use in aspects of the present invention. The filters may be made of any material having suitable edgewise flow characteristics, i.e., suitable resistance to fluid flowing through the layer in a direction parallel to the layer surface. The edgewise flow resistance of the drainage screen is preferably low enough so that the pressure drop in the drainage layer is less than the pressure drop across the filter medium, thereby providing uniform distribution of the fluid along the surface of the filter medium.
典型地，根據本發明之態樣的過濾器3100將在過濾元件3000之一個或兩個末端處配備有端蓋850（圖3中僅展示其中之一者）。端蓋850可為盲（封閉）端蓋或開放端蓋，且其形成材料及其形狀可根據過濾條件及待接合端蓋之構件的材料來選擇。較佳地，端蓋850附接至過濾元件3000，但其亦可附接至內芯800或外籠900。習知技術可用以將端蓋附接至過濾元件。Typically, a filter 3100 according to aspects of the present invention will be equipped with an end cap 850 at one or both ends of the filter element 3000 (only one of which is shown in FIG. 3 ). The end cap 850 can be a blind (closed) end cap or an open end cap, and the material from which it is formed and its shape can be selected according to the filtering conditions and the material of the component to which the end cap is to be joined. Preferably, the end cap 850 is attached to the filter element 3000, but it can also be attached to the inner core 800 or the outer cage 900. Known techniques can be used to attach the end cap to the filter element.
視需要，在一些態樣中，可將對端蓋材料具有良好親和性之材料條帶形式的***件波紋化至過濾元件3000之末端中，以改善過濾元件3000及端蓋850之兩個末端之間的密封。舉例而言，當端蓋由含氟聚合物製成時，可將諸如氟化乙烯-丙烯（FEP）樹脂之另一種含氟聚合物的條帶作為***件波紋化至過濾元件之末端中。***件僅需要足夠寬以將過濾介質接合至端蓋，且因此，其可僅延伸過濾元件3000之軸向長度的一部分。***件之典型寬度為大約0.5吋。Optionally, in some embodiments, an insert in the form of a strip of material having a good affinity for the end cap material may be corrugated into the end of the filter element 3000 to improve the seal between the two ends of the filter element 3000 and the end cap 850. For example, when the end cap is made of a fluoropolymer, a strip of another fluoropolymer such as fluorinated ethylene-propylene (FEP) resin may be corrugated into the end of the filter element as an insert. The insert only needs to be wide enough to join the filter medium to the end cap, and therefore, it may only extend a portion of the axial length of the filter element 3000. The typical width of the insert is about 0.5 inches.
過濾裝置及過濾器之態樣適合於由外而內流動，其中待過濾流體自外部周邊（例如，外籠）經由過濾元件流動至中空中心（例如，內芯），或其可用於由內而外流動，其中流體自中空中心（例如，內芯）經由過濾元件流動至外部周邊（例如，外籠）。The filter device and filter configurations are suitable for outside-in flow, where the fluid to be filtered flows from the outer periphery (e.g., outer cage) through the filter element to the hollow center (e.g., inner core), or they can be used for inside-out flow, where the fluid flows from the hollow center (e.g., inner core) through the filter element to the outer periphery (e.g., outer cage).
圖3中所繪示之過濾元件3000可藉由多種技術製造，例如，如描述於美國專利5,543,047中。The filter element 3000 shown in FIG. 3 can be manufactured by a variety of techniques, for example, as described in U.S. Patent No. 5,543,047.
在一種技術中，過濾器複合物首先波紋化以形成波紋薄片、被切割成合適長度或合適數目個褶皺，且接著形成為圓柱形形狀。接著藉由習知方式將波紋薄片之縱向邊緣彼此密封以形成圓柱形過濾元件。接著在過濾元件3000***至籠900中時，過濾元件之褶皺被覆疊。在已將過濾元件裝配至籠900中之後，將芯800***至過濾元件10之中空中心中，且接著將端蓋附接至過濾元件之末端以形成完整過濾器。In one technique, the filter composite is first corrugated to form a corrugated sheet, cut into a suitable length or number of pleats, and then formed into a cylindrical shape. The longitudinal edges of the corrugated sheet are then sealed to each other in a known manner to form a cylindrical filter element. The pleats of the filter element are then covered when the filter element 3000 is inserted into the cage 900. After the filter element has been assembled into the cage 900, the core 800 is inserted into the hollow center of the filter element 10, and then the end cap is attached to the end of the filter element to form a complete filter.
包括過濾元件之過濾器安置於外殼中，該外殼包括至少一個入口及至少一個出口，且在入口與出口之間界定至少一個流體流徑，其中過濾器跨越流體流徑以提供過濾裝置。較佳地，過濾裝置為可滅菌的。可使用具有合適形狀且提供至少一個入口及至少一個出口的任何外殼。A filter comprising a filter element is disposed in a housing comprising at least one inlet and at least one outlet and defining at least one fluid flow path between the inlet and the outlet, wherein the filter spans the fluid flow path to provide a filtering device. Preferably, the filtering device is sterilizable. Any housing having a suitable shape and providing at least one inlet and at least one outlet may be used.
殼體可由任何合適的剛性不可滲透材料製造，包含任何不可滲透熱塑性材料，其與處理中之流體相容。舉例而言，外殼可由諸如不鏽鋼之金屬或由聚合物製造。在較佳態樣中，外殼為聚合物，在一些態樣中為透明的或半透明的聚合物，諸如丙烯酸、聚丙烯、聚苯乙烯或聚碳酸酯樹脂。The housing can be made of any suitable rigid impermeable material, including any impermeable thermoplastic material, which is compatible with the fluid being processed. For example, the housing can be made of a metal such as stainless steel or of a polymer. In a preferred embodiment, the housing is a polymer, in some embodiments a transparent or translucent polymer such as acrylic, polypropylene, polystyrene or polycarbonate.
以下實例進一步說明本發明，但當然不應將其解釋為以任何方式限制其範圍。 實施例 The following examples further illustrate the present invention, but of course should not be construed as limiting its scope in any way. Examples
此實施例表明相較於包含具有覆疊縱向褶皺之市售過濾元件的測試過濾裝置（如美國專利5,543,047中大體描述），含有根據本發明之態樣的過濾元件之測試過濾裝置的滲透性有所改善。This example demonstrates improved permeability of a test filter device containing a filter element according to aspects of the present invention compared to a test filter device including a commercially available filter element having overlapping longitudinal pleats (as generally described in U.S. Patent 5,543,047).
使用Rabofsky PM600波紋機對過濾元件（高密度聚乙烯（HDPE）膜）進行打褶（具有上游及下游濾網），使得第一及第二橋高度為1吋（其中間隙之寬度為.85吋），(I)H1高度為0.6吋，(I)H2高度為0.4吋，且(O)H1高度為0.3吋（參見圖1、圖2A及圖2B）。孔隙大小為15 nm。The filter element (HDPE membrane) was pleated (with upstream and downstream filters) using a Rabofsky PM600 corrugator such that the first and second bridge heights were 1 inch (with gap widths of .85 inches), (I) H1 height was 0.6 inches, (I) H2 height was 0.4 inches, and (O) H1 height was 0.3 inches (see Figures 1, 2A, and 2B). The pore size was 15 nm.
市售過濾元件（HDPF膜）具有1吋之縱向褶皺高度。The commercially available filter element (HDPF membrane) has a longitudinal pleat height of 1 inch.
根據本發明之態樣的過濾元件及市售過濾元件具有相同的穿孔內芯及外籠，以及.85吋的相同間隙寬度。各過濾元件在一個末端處具有開放端蓋且在另一末端處具有封閉端蓋，且置放於經配置以用於由外而內流動的測試外殼中。Filter elements according to aspects of the present invention and commercially available filter elements had the same perforated inner core and outer cage, and the same gap width of .85 inches. Each filter element had an open end cap at one end and a closed end cap at the other end, and was placed in a test housing configured for outside-in flow.
相比具有市售過濾元件之測試裝置，具有根據本發明之態樣之過濾元件的測試裝置具有相同壓降，但膜面積較低。因此，根據本發明之態樣的過濾元件之滲透率（每單位壓降每單位面積之流量）展示高達20%的增強。Compared to a test device with a commercially available filter element, a test device with a filter element according to aspects of the present invention has the same pressure drop, but a lower membrane area. Therefore, the permeability (flow per unit area per unit pressure drop) of the filter element according to aspects of the present invention shows an increase of up to 20%.
本文中所引用之所有參考文獻（包含公開案、專利申請案及專利）在此以引用之方式併入，該引用程度如同個別及特定地指示各參考文獻以引用之方式併入且全文闡述於本文中。All references (including publications, patent applications, and patents) cited herein are hereby incorporated by reference to the same extent as if each reference were individually and specifically indicated to be incorporated by reference and were set forth in its entirety herein.
除非本文中另外指示或與上下文明顯矛盾，否則在描述本發明之上下文中（尤其在以下申請專利範圍的之上下文中），應將術語「一（a）」及「一（an）」以及「該」及「至少一個」及類似提及物的使用理解為涵蓋單數與複數兩者。除非本文中另外指示或與上下文明顯矛盾，否則使用後接一或多個項目之清單的術語「至少一者」（例如，「A及B中之至少一者」）應解釋為意謂選自所列項目之一個項目（A或B）或所列項目中之兩者或多於兩者的任何組合（A及B）。除非另外指示，否則術語「包括」、「具有」、「包含」及「含有」應解釋為開放式術語（亦即，意謂「包含但不限於」）。除非本文中另外指示，否則本文中值範圍的敍述僅意欲充當個別提及屬於該範圍的各獨立值的簡寫方法，且各獨立值併入本說明書中，如同在本文中個別地敍述一般。除非本文中另外指示或另外與上下文明顯矛盾，否則本文中所描述之所有方法可以任何合適次序執行。除非另外主張，否則使用本文中所提供之任何及所有實例或範例性語言（例如，「諸如」）僅意欲較好地闡明本發明而不對本發明之範圍造成限制。本說明書中之語言不應解釋為指示實踐本發明所必需之任何未主張要素。Unless otherwise indicated herein or clearly contradicted by context, the use of the terms "a" and "an" and "the" and "at least one" and similar references in the context of describing the present invention (especially in the context of the claims below) should be understood to cover both the singular and the plural. Unless otherwise indicated herein or clearly contradicted by context, the use of the term "at least one" followed by a list of one or more items (e.g., "at least one of A and B") should be interpreted to mean one item (A or B) or any combination of two or more of the listed items (A and B) selected from the listed items, unless otherwise indicated. The terms "including," "having," "comprising," and "containing" should be interpreted as open-ended terms (i.e., meaning "including, but not limited to"), unless otherwise indicated. Unless otherwise indicated herein, the recitation of ranges of values herein is intended merely to serve as a shorthand method of referring individually to each individual value falling within the range, and each individual value is incorporated into the specification as if individually recited herein. All methods described herein may be performed in any suitable order unless otherwise indicated herein or otherwise clearly contradicted by context. Unless otherwise claimed, the use of any and all examples or exemplary language (e.g., "such as") provided herein is intended merely to better illustrate the invention and not to limit the scope of the invention. The language in this specification should not be interpreted as indicating any non-claimed element necessary to practice the invention.
本發明之較佳態樣描述於本文中，包含本發明人已知之進行本發明的最佳模式。在閱讀前文描述之後，彼等較佳態樣之變化對所屬技術領域中具有通常知識者而言可變得顯而易見。本發明人期望所屬技術領域中具有通常知識者在適當時使用此類變化，且本發明人意欲以不同於本文中特定描述之其他方式來實施本發明。因此，若適用法律准許，則本發明包含在隨附於本文之申請專利範圍中所敍述的主題之所有修改及等效物。此外，除非本文中另外指示或另外上下文明顯矛盾，否則本發明涵蓋上述要素以其所有可能變化形式之任何組合。The preferred aspects of the present invention are described herein, including the best modes known to the inventors for carrying out the present invention. After reading the foregoing description, variations of those preferred aspects may become apparent to those with ordinary knowledge in the art. The inventors expect those with ordinary knowledge in the art to use such variations when appropriate, and the inventors intend to implement the present invention in other ways than those specifically described herein. Therefore, if permitted by applicable law, the present invention includes all modifications and equivalents of the subject matter described in the scope of the claims attached hereto. In addition, unless otherwise indicated herein or otherwise clearly contradicted by the context, the present invention covers any combination of the above elements in all possible variations thereof.
100A,200A:縱向褶皺 100B,200B:縱向反褶皺 500:多孔介質 501:第一褶皺濾網 502:第二褶皺濾網 800:穿孔內芯 850:端蓋 900:外籠 3000:褶皺圓柱形中空多孔過濾元件 3100:過濾器 B1:第一橋 BH1:第一橋高度 B2:第二橋 BH2:第二橋高度 G:環狀間隙 GRP:過濾元件群組 (I)H1:具有最高高度之第一縱向褶皺 (I)H2:具有最短高度之第二縱向褶皺 (O)H1:具有最高高度之第一縱向反褶皺 (O)H2:具有最短高度之第二縱向反褶皺 SG1:第一過濾元件子群組 SG2:第二過濾元件子群組 W:環狀間隙之寬度 100A, 200A: longitudinal pleats 100B, 200B: longitudinal reverse pleats 500: porous medium 501: first pleated filter 502: second pleated filter 800: perforated inner core 850: end cap 900: outer cage 3000: pleated cylindrical hollow porous filter element 3100: filter B1: first bridge BH1: first bridge height B2: second bridge BH2: second bridge height G: annular gap GRP: filter element group (I) H1: first longitudinal pleat with the highest height (I) H2: second longitudinal pleat with the shortest height (O)H1: The first longitudinal anti-pleat with the highest height (O)H2: The second longitudinal anti-pleat with the shortest height SG1: The first filter element subgroup SG2: The second filter element subgroup W: The width of the annular gap
[圖1]為以圖解方式展示用於製備根據本發明之態樣之過濾元件的具有混合褶皺高度之褶皺的圖式（其中為了易於參考，將褶皺展示為在壓縮之前為展開的以形成褶皺多孔過濾元件，且亦展示內芯及外籠），該圖式展示配置於內芯與外籠之間的環狀間隙中之褶皺圓柱形中空多孔過濾元件的態樣，該環狀間隙具有寬度；褶皺圓柱形中空多孔過濾元件包括複數個過濾元件群組，該複數個過濾元件群組中之各者包括第一過濾元件子群組，該第一過濾元件子群組包括第一橋，其後接著具有縱向褶皺高度之複數個縱向褶皺，各第一過濾元件子群組與第二過濾元件子群組交替，該第二過濾元件子群組包括第二橋，其後接著具有縱向反褶皺高度之至少一個縱向反褶皺，其中面向內（尖端面向內芯；高度(I)H1至(I)H2）之縱向褶皺的第一及第二群組以及面向外（尖端面向外籠；反褶皺；高度(O)H1）之至少一個縱向反褶皺具有不同設計及高度圖案（連續重複的單元及非對稱定向），之後褶皺在所製備過濾器中壓縮在一起。FIG. 1 is a diagram showing pleats with mixed pleat heights for preparing a filter element according to an aspect of the present invention in a diagrammatic manner (wherein, for ease of reference, the pleats are shown as unfolded before compression to form a pleated porous filter element, and an inner core and an outer cage are also shown), the diagram showing an aspect of a pleated cylindrical hollow porous filter element disposed in an annular gap between an inner core and an outer cage, the annular gap having a width; the pleated cylindrical hollow porous filter element includes a plurality of filter element groups, each of the plurality of filter element groups includes a first filter element subgroup, the first filter element subgroup includes a first A filter element is prepared by first and second groups of longitudinal pleats having a longitudinal pleat height, followed by a plurality of longitudinal pleats having a longitudinal pleat height, each first filter element subgroup is alternated with a second filter element subgroup, the second filter element subgroup comprising a second bridge, followed by at least one longitudinal anti-pleat having a longitudinal anti-pleat height, wherein the first and second groups of longitudinal pleats facing inward (with the tip facing the inner core; heights (I)H1 to (I)H2) and at least one longitudinal anti-pleat facing outward (with the tip facing the outer cage; anti-pleat; height (O)H1) have different designs and height patterns (continuously repeated units and asymmetrical orientation), after which the pleats are compressed together in the prepared filter.
[圖2A]為展示圖1中所展示之過濾元件的相片；且圖2為以部分剖視圖展示圖1及圖2A中大體展示之具有混合褶皺高度的經組裝過濾元件之電腦斷層攝影術（computed tomography；CT）掃描之相片；圖2C為展示圖2A中所展示之部分壓縮的過濾元件之圖式。[FIG. 2A] is a photograph showing the filter element shown in FIG. 1; and FIG. 2 is a photograph showing a computed tomography (CT) scan of the assembled filter element with mixed pleat heights generally shown in FIG. 1 and FIG. 2A in a partial cross-sectional view; FIG. 2C is a diagram showing a partially compressed filter element shown in FIG. 2A.
[圖3]為展示根據本發明之另一態樣的過濾器之剖視透視圖解視圖的圖式，該過濾器包含圖2B中所展示之具有混合褶皺高度的過濾元件（過濾元件未完全壓縮）。[FIG. 3] is a diagram showing a perspective sectional view of a filter according to another aspect of the present invention, wherein the filter includes a filter element with mixed pleat heights as shown in FIG. 2B (the filter element is not fully compressed).
Claims (8)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US63/395,079 | 2022-08-04 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| TW202410949A true TW202410949A (en) | 2024-03-16 |
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