WO2011017352A2 - Method and apparatus for forming fluted filtration media having tapered flutes - Google Patents

Method and apparatus for forming fluted filtration media having tapered flutes Download PDF

Info

Publication number
WO2011017352A2
WO2011017352A2 PCT/US2010/044286 US2010044286W WO2011017352A2 WO 2011017352 A2 WO2011017352 A2 WO 2011017352A2 US 2010044286 W US2010044286 W US 2010044286W WO 2011017352 A2 WO2011017352 A2 WO 2011017352A2
Authority
WO
WIPO (PCT)
Prior art keywords
media
roll
flute
flutes
fluted
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2010/044286
Other languages
English (en)
French (fr)
Other versions
WO2011017352A3 (en
Inventor
Ted A. Moe
Gregory J. Fesenmaier
Gary J. Rocklitz
Ming Ouyang
Anitha M. Mathew
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Donaldson Co Inc
Original Assignee
Donaldson Co Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Donaldson Co Inc filed Critical Donaldson Co Inc
Priority to JP2012523711A priority Critical patent/JP5711230B2/ja
Priority to MX2012001455A priority patent/MX2012001455A/es
Priority to US13/388,956 priority patent/US10363513B2/en
Priority to EP10807046.7A priority patent/EP2461884B1/en
Priority to BR112012002409-4A priority patent/BR112012002409B1/pt
Priority to CN201080037254.0A priority patent/CN102481501B/zh
Publication of WO2011017352A2 publication Critical patent/WO2011017352A2/en
Publication of WO2011017352A3 publication Critical patent/WO2011017352A3/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • B01D46/525—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes
    • B01D46/526—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material which comprises flutes in stacked arrangement
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/001—Making filtering elements not provided for elsewhere
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D25/00—Filters formed by clamping together several filtering elements or parts of such elements
    • B01D25/22—Cell-type filters
    • B01D25/24—Cell-type roll filters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B01D39/1607—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous
    • B01D39/1623—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres the material being fibrous of synthetic origin
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0001—Making filtering elements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/02—Types of fibres, filaments or particles, self-supporting or supported materials
    • B01D2239/025—Types of fibres, filaments or particles, self-supporting or supported materials comprising nanofibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/12—Special parameters characterising the filtering material
    • B01D2239/1233—Fibre diameter

Definitions

  • Figure 8 is an enlarged, partial, sectional view of a portion of the coining roll shown in Figure 7.
  • Media volume asymmetry generally measures the media volume ratio of the larger media volume bounded by the flute peaks to the smaller media volume.
  • the larger media volume corresponds to the upstream open media volume
  • the smaller media volume corresponds to the downstream open media volume (during use the open volume may accumulate contaminants, such as dust).
  • media will demonstrate a media volume asymmetry of more than 1%, more than 3%, more than 5%, or more than 10%.
  • Example media constructions demonstrate a media volume asymmetry of greater than 15%, greater than 20%, greater than 50%, greater than 75%, greater than 100%, greater than 150%, and greater than 200%.
  • Suitable media volume asymmetry ranges includes, for example, 1% to 300%, 5% to 200%; 50% to 200%; 100% to 200%; and 100% to 150%.
  • Corrugated media is a specific form of fluted media.
  • Fluted media is media which has individual flutes (for example, formed by corrugating or folding or pleating) extending thereacross.
  • Fluted media can be prepared by any technique that provides the desired flute shapes. While corrugating can be a useful technique for forming flutes having a particular size. When it is desirable to increase the height of the flutes (the height is the elevation between peaks), corrugating techniques might not be practical and it may be desirable to fold or pleat the media. In general, pleating of media can be provided as a result of folding the media.
  • An exemplary technique for folding the media to provide pleats includes scoring and using pressure to create the fold.
  • the flute width height ratio is the ratio of the flute period length Dl to the flute height J.
  • the flute width height ratio can be expressed by the following formula: flute width height D
  • flutes having a flute width height ratio of at least about 2.2, at least about 2.5, at least about 2.7, or at least about 3.0 can provide an increased surface area of media available for filtration.
  • providing a flute design having a width height ratio of less than about 0.45, less than about 0.40, less than about 0.37, or less than about 0.33 can provide increased media area available for filtration.
  • a theoretical flute having a equilateral triangle shape represents a flute width height ratio of about 1.6.
  • Another technique for increasing the amount of filtration media available for filtration includes increasing the flute density of the media pack.
  • the filter element may have a sheath or a seal intended to engage a housing that would provide the filter element with a cross-sectional area that is greater than the cross- sectional area of the media.
  • the cross-sectional area of the media refers to the effective area. That is, if the media is wound around a core or mandrel, the cross-sectional area of the core or mandrel is not part of the z-media pack cross- sectional area.
  • the low contact shape refers to the relatively low area of contact between the fluted sheet 112 and the facing sheet 111.
  • the presence of the ridge 118 helps provide for reduced masking at the peaks 115 and 119.
  • the ridge 118 exists as a result of the forming of fluted sheet 112 and, as a result, reduces the internal stress on the media at the peaks 115 and 119. Without the presence of the ridge 118, there would likely exist a level of internal tension in the fluted sheet 112 that would cause the fluted sheet 112 to create a greater radius at the peaks 115 and 119, and thereby increase masking.
  • the coining roll 250 has coining roll projections 258 that can be considered a form of teeth, and coining roll recesses 276 that can be considered a form of recess.
  • the receiver roll 290 includes receiver roll recesses 296 that can be considered a type of recess, and receiver roll projections 298 that can be considered at type of teeth.
  • the coining roll projections 258 engage the receiver roll recesses 298, and the receiver roll projections 298 engage the coining roll recesses 276. This operation is illustrated in Figure 12 where a coining roll 250 and a receiver roll 290 engage a filtration media 310 to create fluted filtration media 312.
  • the rolls by providing both rolls with media contact areas that engage the filtration media on opposite sides of the filtration media to create a ridge or crease or bend, it is the combined effort of the rolls that creates the repeating pattern of flutes in the filtration media.
  • the rolls by characterizing of the rolls as a coining roll, it is not meant to exclude the possibility of the other roll (e.g., the receiving roll) from having projections that engage recesses on the coining roll to create ridges, bends, or creases in the filtration media.
  • the characterization of the first roll as having a plurality of first roll projections does not mean that the first roll projections extend the entire length of the roll. It may be desirable to have the first roll projections only extend a length of the roll.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Shaping Of Tube Ends By Bending Or Straightening (AREA)
  • Cigarettes, Filters, And Manufacturing Of Filters (AREA)
  • Manufacturing Of Magnetic Record Carriers (AREA)
PCT/US2010/044286 2009-08-03 2010-08-03 Method and apparatus for forming fluted filtration media having tapered flutes Ceased WO2011017352A2 (en)

Priority Applications (6)

Application Number Priority Date Filing Date Title
JP2012523711A JP5711230B2 (ja) 2009-08-03 2010-08-03 テーパ付き縦溝流路を有する縦溝流路付き濾過媒体を形成する方法および装置
MX2012001455A MX2012001455A (es) 2009-08-03 2010-08-03 Metodo y aparato para formar un medio de filtracion acanalado que tiene acanaladuras progresivas.
US13/388,956 US10363513B2 (en) 2009-08-03 2010-08-03 Method and apparatus for forming fluted filtration media having tapered flutes
EP10807046.7A EP2461884B1 (en) 2009-08-03 2010-08-03 Method for forming fluted filtration media having tapered flutes
BR112012002409-4A BR112012002409B1 (pt) 2009-08-03 2010-08-03 método e aparelho para formação de meio de filtração estriado que tem estrias afuniladas
CN201080037254.0A CN102481501B (zh) 2009-08-03 2010-08-03 用于形成具有楔形槽的槽式过滤介质的方法和装置

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
US23100909P 2009-08-03 2009-08-03
US61/231,009 2009-08-03

Publications (2)

Publication Number Publication Date
WO2011017352A2 true WO2011017352A2 (en) 2011-02-10
WO2011017352A3 WO2011017352A3 (en) 2011-06-16

Family

ID=43544909

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/US2010/044286 Ceased WO2011017352A2 (en) 2009-08-03 2010-08-03 Method and apparatus for forming fluted filtration media having tapered flutes

Country Status (7)

Country Link
US (1) US10363513B2 (enExample)
EP (1) EP2461884B1 (enExample)
JP (3) JP5711230B2 (enExample)
CN (1) CN102481501B (enExample)
BR (1) BR112012002409B1 (enExample)
MX (1) MX2012001455A (enExample)
WO (1) WO2011017352A2 (enExample)

Cited By (12)

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JP2013521107A (ja) * 2010-02-26 2013-06-10 クラーコア インコーポレーテッド ナノ繊維マトリクスを含む拡張複合ろ過材及び方法
CN103212256A (zh) * 2012-01-23 2013-07-24 通用电气公司 包括褶末端形状的过滤器组件
US8673043B2 (en) 2010-03-17 2014-03-18 Baldwin Filters, Inc. Fluid filter
US9084957B2 (en) 2008-07-25 2015-07-21 Donaldson Company, Inc. Pleated filtration media, media packs, filter elements, and methods for filtering fluids
US9433884B2 (en) 2007-06-26 2016-09-06 Donaldson Company, Inc. Filtration media pack, filter element, and methods
US9517430B2 (en) 2007-02-02 2016-12-13 Donaldson Company, Inc. Air filtration media pack, filter element, air filtration media, and methods
USD786935S1 (en) 2015-11-20 2017-05-16 Baldwin Filters, Inc. Filter element
US10058812B2 (en) 2010-01-25 2018-08-28 Donaldson Company, Inc. Pleated filtration media having tapered flutes
US10279301B2 (en) 2012-11-01 2019-05-07 Lumileds Llc Strip, filter with the strip, method and apparatus for producing the strip
US10363513B2 (en) 2009-08-03 2019-07-30 Donaldson Company, Inc. Method and apparatus for forming fluted filtration media having tapered flutes
US11358090B2 (en) 2010-03-17 2022-06-14 Baldwin Filters, Inc. Fluid filter
US12097459B2 (en) 2017-08-22 2024-09-24 Donaldson Company, Inc. Fluted filtration media, filtration media packs, and filtration elements

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CN101932372B (zh) * 2008-02-04 2015-09-16 唐纳森公司 用于形成槽纹过滤介质的方法和装置
CN102119049B (zh) 2008-08-06 2014-04-09 唐纳森公司 具有槽纹闭合结构的z-介质、方法和装置
US9463594B2 (en) 2013-03-13 2016-10-11 Braden Manufacturing, Llc Method and apparatus for corrugating filter media
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US20140263037A1 (en) 2013-03-14 2014-09-18 Ahistrom Corporation Filtration media
US9492775B2 (en) * 2013-03-15 2016-11-15 Donaldson Company, Inc. Air filtration media, media constructions and methods
WO2016069342A1 (en) * 2014-10-31 2016-05-06 3M Innovative Properties Company Respirator having corrugated filtering structure
US10661209B2 (en) 2014-11-10 2020-05-26 Donaldson Company, Inc. Filtration media packs comprising plurality of bosses between filter media, filter elements, and methods for manufacturing
CN104338803A (zh) * 2014-11-22 2015-02-11 山东科润机械股份有限公司 一种连续式轴向辊压成形机
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EP2461884B1 (en) 2019-11-06
JP6490777B2 (ja) 2019-03-27
JP2013500863A (ja) 2013-01-10
CN102481501A (zh) 2012-05-30
EP2461884A2 (en) 2012-06-13
EP2461884A4 (en) 2013-02-13
CN102481501B (zh) 2016-10-12
BR112012002409B1 (pt) 2020-11-10
US10363513B2 (en) 2019-07-30
JP2015131299A (ja) 2015-07-23
JP6518085B2 (ja) 2019-05-22
JP5711230B2 (ja) 2015-04-30
MX2012001455A (es) 2012-05-08
BR112012002409A2 (pt) 2018-03-13
JP2018086645A (ja) 2018-06-07
US20120196733A1 (en) 2012-08-02
WO2011017352A3 (en) 2011-06-16

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