EP2919880A1 - Filterelement - Google Patents
FilterelementInfo
- Publication number
- EP2919880A1 EP2919880A1 EP12812873.3A EP12812873A EP2919880A1 EP 2919880 A1 EP2919880 A1 EP 2919880A1 EP 12812873 A EP12812873 A EP 12812873A EP 2919880 A1 EP2919880 A1 EP 2919880A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- fold
- height
- filter element
- pleats
- 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.)
- Withdrawn
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/13—Supported filter elements
- B01D29/15—Supported filter elements arranged for inward flow filtration
- B01D29/21—Supported filter elements arranged for inward flow filtration with corrugated, folded or wound sheets
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
- B01D29/31—Self-supporting filtering elements
- B01D29/33—Self-supporting filtering elements arranged for inward flow filtration
- B01D29/333—Self-supporting filtering elements arranged for inward flow filtration with corrugated, folded filtering elements
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2201/00—Details relating to filtering apparatus
- B01D2201/12—Pleated filters
- B01D2201/122—Pleated filters with pleats of different length
Definitions
- the invention relates to a filter element with a preferably multilayer construction of a filter medium having pleated folds with different pleat height, with pleats having a first filter pleat height and with filter pleats having a lower second pleat height, the filter element having a flow direction for scavenging fluid from has a dirty side to a clean side.
- Filter elements of this type are commercially available. In connection with fluid systems of various kinds such filter elements are widely used for the filtration of process fluids, hydraulic fluids, such as hydraulic oils, as well as liquid fuels and lubricants for the treatment of liquid media and the like. In many cases, in fluid systems in which the filter elements are used, only a limited usable space for the installation or removal of the system parts are available that contain the relevant filter cartridge-like filter elements. On the other hand, in order to be able to filter correspondingly large filter flows, a sufficient size of the filter surface provided by the filter element is required.
- the known filter elements comprise a zig-zag folded or pleated filter medium which is typically composed of several layers of different filter materials.
- the filter medium is separated by a cutting device. carried out, in which the filter medium is cut to size on the edge before it is moved on to a folding machine in which the zigzag shape or the pleat is formed.
- the cut filter medium is then separated into sections, which are formed into a tubular body and thus form the filter element.
- the invention has the object to show an improved filter element, which has a high filter performance at a low flow rate even after prolonged service life.
- This object is achieved by a filter element having the features of claim 1.
- Advantageous embodiments and further developments of the filter element will become apparent from the dependent claims.
- the transitions of all filter folds arranged adjacent to the clean side or to the dirty side terminate along a notional circular cylinder, which passes through the filter medium coaxially to its longitudinal axis.
- the inventive arrangement of filter pleats of the first pleat height and the second pleat height stabilizes, wherein the filter pleats of the second pleat height support the filter pleats of the first pleat height. Consequently, a pressure-stable construction for the filter element over the filter folds of different heights is achieved. Furthermore, the filter folds of the first fold height are kept in their original arrangement during operation of the filter element and have a particularly large surface facing the dirty side. The dirty surface facing the open surface is therefore larger than conventional filter elements with a uniform fold height over the entire circumference. This makes it easier for the fluid to penetrate the filter medium, and thus leads to a filter element with improved over the lifetime filter performance and a longer life.
- the filter folds with the first fold height and the filter folds with the second fold height are arranged predominantly alternately to one another.
- the alternating or varying arrangement brings about a particularly effective stabilization of the pleat geometry of the filter pleats of the first pleat height.
- more filter pleats of the first pleat height can project freely beyond filter pleats of the second pleat height, so that the surface of the filter pleats of the first pleat height exposed to the dirty side or the clean side is maximized.
- the filter folds with the second filter fold height can stabilize the alignment and / or arrangement of the filter folds with the first fold height.
- the filter folds of the second fold height therefore serve as support folds. This stabilization has an advantageous effect in the course of the life of the filter element, since the filtration performance is significantly improved over time by stabilizing the shape of the filter pleats. It is particularly advantageous for the filter folds with the second fold height to prevent contacting or sticking together of the filter folds of the first fold height, provided that the filter folds project beyond the second fold height to the dirty side or the clean side with the first fold height. The contacting of filter pleats always leads to an undesirable reduction of the effective filter area. This is effectively prevented by the arrangement according to the invention, since the filter pleats of the first pleat height are spaced from each other.
- the effective filter surface of the filter medium is compared to a filter medium with uniformly high filter wrinkles, comparable to the first fold height, despite reducing the filter surface equal to, preferably increased. Consequently, with the same effective filter area, the amount of filter medium can be reduced or, in spite of the reduction of the surface of the filter medium, the effective filter area can be obtained. Both approaches lead to a much improved filter element in which the utilization of the filter medium is optimal.
- the clean side is arranged on the inside of the filter element, which is covered by the formation of the notional circular cylinder of the filter medium.
- the filter medium is advantageously flowed through during the filtration from outside to inside.
- the clean side is arranged on an outer side of the filter medium, which faces the fictitious circular cylinder. Consequently, the filter medium is flowed through from the inside to the outside.
- This arrangement has the advantage that the density of the filter medium can be substantially increased.
- the respective filter fold is formed from two adjoining planar filter surfaces, which together form the pleated filter surface. form medium and have the same bending radius in the region of the transition to the respectively adjacent filter fold.
- the arched transitions protect the filter medium during pleating. Furthermore, it is ensured that the flat filter surfaces are spaced from each other. In this way, the effective filter area is also advantageously increased.
- the filter pleats are supported on one side by a support tube through which the fictitious circular cylinder is formed.
- the support tube offers a contact surface for the filter folds. Therefore, they are additionally stabilized in shape, which is particularly advantageous for highly fluctuating or pulsating fluid flows.
- the filter folds with the second fold height can occupy 1/4 to 3/4, preferably approximately 2/3, of the height of the filter folds with the first fold height.
- an optimal stabilizing and supporting effect of the filter folds with simultaneous optimization of the effective filter area could be determined for this area.
- the individual filter folds of different fold height spread out with a conical profile to form the M fold arrangement.
- a free waiting space for fluid on the dirty side or the clean side in the form of a fictitious cylinder segment formed during operation of the filter element leads.
- fluid can be cached or dammed, in order to then flow through evenly through the filter medium. In this way, the filtration performance is improved and it is avoided excessive charging of the fluid due to a high flow velocity.
- Fig. 1 is a perspective view of the filter medium
- Fig. 2 is a plan view of the filter medium of Fig. 1;
- FIG. 3 is an enlarged detail of the illustration of FIG. 2.
- FIGS. 1 to 3 show a filter element 1 according to the invention with a multilayer structure of a filter medium 3.
- the filter medium 3 has in pleated form filter folds 5, 7 with different fold height h1, h2.
- Filter folds 7 of a first fold height h1 differ from filter folds 5 with a comparatively lower second fold height h2.
- the filter pleats 5 with the second pleat height h2 occupy about 2/3 of the height of the filter pleats 7 with the first pleat height hl.
- the filter element 1 has a flow direction for a fluid to be cleaned from an outer dirty side 5 to an inner clean side R. On the clean side R out close all filter folds 5, 7 along a notional circular cylinder 9, which passes through the filter medium 3 coaxially to its longitudinal axis LA.
- the filter pleats 7 with the first pleat height hl and the filter pleats 5 with the second pleat height h2 are arranged alternately to one another in such a way that the filter pleats 5 with the second pleat height h2 stabilize the alignment and arrangement of the filter pleats 7 with the first pleat height h1.
- the effective filter surface of the filter medium 3 is equal to or even higher than a filter medium with uniformly high filter folds, comparable to the first fold height h1, despite the reduction of the filter surface.
- the respective filter fold 5, 7 is formed from two adjacent planar filter surfaces 1 1, 1 3, the coherent form the pleated filter medium 3.
- the flat filter surfaces 11, 13 have the same bending radius BR in the area of the transition 15 to the respectively adjacent filter fold 7, 5.
- the filter folds 5, 7 are supported by a support tube 9 through which the notional circular cylinder is formed.
- the support tube 9 is made of metal and has distributed on its peripheral surface arranged circular holes for the passage of fluid.
- the filter fold 5 forms a type of M-fold arrangement M with the second fold height h2, which is bounded by a respective adjacently arranged filter fold 7 with the first fold height h1.
- the individual filter folds 5, 7 of different fold height h1, h2 spread in a conical shape to form the M-fold arrangement M.
- a free waiting space 19 for fluid is formed on the dirty side S in the manner of a fictitious cylinder segment.
- the filter element 1 due to the M-fold arrangement M during operation of the filter element 1, in which this is normally traversed by a fluid with particle contamination, which leads to an electrostatic charge of the filter element 1, this charge by reducing the Fluidströ- tion due to the respective waiting room 19 reduced. It has been shown that the charge increases with increasing flow velocity and accordingly decreases with decreasing flow velocity. The aim is therefore to reduce the flow rate so far that any remaining charge can be derived by grounding the fluid in downstream components of a hydraulic circuit. Consequently, the filter element 1 according to the invention has a high filter performance even at a low flow rate even after prolonged service life. The filter element 1 is therefore more cost-effective and safer in operation due to the reduced charge of the fluid flowing through, which can lead to undesired discharges with the consequence of the destruction of the element material, the increasing oil aging and an increased risk of fire.
- the clean side R is provided on the inside and the dirty side S on the outside of the filter medium 3. It goes without saying that the clean side R can also be arranged on the outside and the dirty side on the inside of the filter medium 3.
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Materials (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| EP22180195.4A EP4094819A1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE201210022283 DE102012022283A1 (de) | 2012-11-14 | 2012-11-14 | Filterelement und hydraulischer Kreislauf mit einem solchen Filterelement |
| DE201210022285 DE102012022285A1 (de) | 2012-11-14 | 2012-11-14 | Filterelement |
| PCT/EP2012/005375 WO2014075702A1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
Related Child Applications (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22180195.4A Division EP4094819A1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
| EP22180195.4A Previously-Filed-Application EP4094819A1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP2919880A1 true EP2919880A1 (de) | 2015-09-23 |
Family
ID=47520890
Family Applications (3)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22180195.4A Pending EP4094819A1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
| EP12812534.1A Active EP2919879B1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
| EP12812873.3A Withdrawn EP2919880A1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
Family Applications Before (2)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22180195.4A Pending EP4094819A1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
| EP12812534.1A Active EP2919879B1 (de) | 2012-11-14 | 2012-12-24 | Filterelement |
Country Status (5)
| Country | Link |
|---|---|
| US (3) | US10213709B2 (de) |
| EP (3) | EP4094819A1 (de) |
| JP (2) | JP6510417B2 (de) |
| CN (2) | CN104661720B (de) |
| WO (2) | WO2014075703A1 (de) |
Families Citing this family (17)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20150231531A1 (en) * | 2014-02-19 | 2015-08-20 | Essentra Porous Technologies Corp. | Vaned filtration media and methods of making the same |
| EP3219378A1 (de) * | 2016-03-15 | 2017-09-20 | Schuko Heinz Schulte-Südhoff GmbH & Co. KG | Filterpatrone zur reinigung von luft |
| KR20190020060A (ko) | 2016-08-29 | 2019-02-27 | 이엠디 밀리포어 코포레이션 | 압축된 주름 구성 필터에 대한 고정된 강성 벽 장치 |
| CN109890666B (zh) | 2016-10-20 | 2022-03-11 | 康明斯滤清系统知识产权公司 | 平坦的片的间断的定向凸起 |
| DE102016013166A1 (de) * | 2016-11-04 | 2018-05-09 | Hydac Filter Systems Gmbh | Filterelement |
| US11376541B2 (en) | 2016-12-15 | 2022-07-05 | Cummins Filtration Ip, Inc. | Tetrahedral filter media |
| CN110475600B (zh) | 2017-04-11 | 2021-10-22 | 康明斯过滤Ip公司 | 板式过滤器元件 |
| WO2018231537A1 (en) | 2017-06-15 | 2018-12-20 | Porex Corporation | Integral porous fiber media with distinguishable density or fiber diameters |
| DE102018101804A1 (de) * | 2018-01-26 | 2019-08-01 | Sartorius Stedim Biotech Gmbh | Filtermodul |
| CN108671633A (zh) * | 2018-08-01 | 2018-10-19 | 德清国能过滤器材有限公司 | 褶皱过滤芯 |
| CN109289537A (zh) * | 2018-11-07 | 2019-02-01 | 无锡普力环保科技有限公司 | 一种大通量过滤器的滤芯 |
| DE102019120646A1 (de) * | 2019-07-31 | 2021-02-04 | Mann+Hummel Gmbh | Filterelement, Innenraumluftfilter und Herstellungsverfahren |
| KR102932356B1 (ko) * | 2019-09-17 | 2026-02-27 | 코웨이 주식회사 | 튜브형상의 절곡형 필터부재 |
| WO2021118524A1 (en) | 2019-12-09 | 2021-06-17 | Cummins Filtration Inc. | Formed filter media |
| DE102020004704A1 (de) * | 2020-08-04 | 2022-02-10 | H Y D A C Filtertechnik GmbH | Filterelement |
| US20230024676A1 (en) * | 2021-07-22 | 2023-01-26 | Gonzalo Fuentes Iriarte | Systems and methods for electric vehicle energy recovery |
| CN115869769B (zh) * | 2022-12-23 | 2025-12-30 | 武汉维晨科技有限公司 | 高填充密度的大通量折叠滤芯 |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2395449A (en) * | 1942-03-31 | 1946-02-26 | Southwick W Briggs | Filter unit |
| GB725066A (en) * | 1953-06-16 | 1955-03-02 | Fram Corp | Improvements relating to separating or filtering media |
| JPS50115876U (de) * | 1974-03-05 | 1975-09-20 | ||
| EP1322396A2 (de) * | 2000-09-15 | 2003-07-02 | Cuno Incorporated | Spiralförmig gefaltete filterpatronen |
| EP1757355A1 (de) * | 2004-04-15 | 2007-02-28 | Entegris, Inc. | Gefaltete patronenfiltervorrichtung |
Family Cites Families (24)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2627350A (en) * | 1949-01-12 | 1953-02-03 | Wix Accessories Corp | Filter cartridge |
| GB1426173A (en) | 1972-03-11 | 1976-02-25 | Gen Motors Ltd | Fluid filter elements |
| JPS5016578U (de) * | 1973-06-11 | 1975-02-21 | ||
| JPS60238111A (ja) * | 1984-05-11 | 1985-11-27 | Nippon Rokaki Kk | フイルタエレメント |
| WO1987001301A1 (en) * | 1985-09-06 | 1987-03-12 | Eastman Kodak Company | Conductive filter cartridge and method for making same |
| JPH0510898Y2 (de) * | 1988-10-25 | 1993-03-17 | ||
| FR2673852B1 (fr) * | 1991-03-13 | 1994-04-15 | Labinal Precision Mecanique | Perfectionnements apportes aux cartouches de filtration comprenant un element filtrant constitue par une feuille plissee. |
| US5275743A (en) * | 1991-12-10 | 1994-01-04 | Pall Corporation | Filter and filtration method |
| JPH07243356A (ja) * | 1994-03-03 | 1995-09-19 | Toyo Eremento Kogyo Kk | フイルタエレメント |
| EP0840644B1 (de) | 1995-07-18 | 1999-04-28 | Parker-Hannifin Corporation | Leitendes filterelement. |
| JP5042408B2 (ja) * | 1999-01-07 | 2012-10-03 | スリーエム イノベーティブ プロパティーズ カンパニー | プリーツ付フィルター要素 |
| FR2791579A1 (fr) * | 1999-04-02 | 2000-10-06 | Albrecht Philippe | Cartouche filtrante demontable et recyclable pour filtres a liquide immerges |
| CA2391016A1 (en) | 1999-11-23 | 2001-05-31 | Pall Corporation | Conductive filter cartridge |
| CN2581042Y (zh) * | 2002-10-24 | 2003-10-22 | 张聪明 | 改进的集尘机滤袋 |
| DE10250969A1 (de) * | 2002-11-02 | 2004-05-19 | Hydac Filtertechnik Gmbh | Filterelement |
| DE102004005202A1 (de) | 2004-02-03 | 2005-08-25 | Hydac Filtertechnik Gmbh | Filterelement |
| AU2005295757A1 (en) * | 2004-10-15 | 2006-04-27 | 3M Innovative Properties Company | Pleated multi-layer filter media and cartridge |
| JP4634890B2 (ja) | 2005-08-15 | 2011-02-16 | インテグリス・インコーポレーテッド | プリーツ型カートリッジフィルタ装置 |
| DE102008004344A1 (de) | 2008-01-15 | 2009-08-06 | Hydac Filtertechnik Gmbh | Filter |
| CN101411952A (zh) * | 2008-08-26 | 2009-04-22 | 张金松 | 一种折叠式净水滤芯 |
| DE202009000969U1 (de) * | 2009-01-26 | 2010-07-01 | Mann+Hummel Gmbh | Filterelement |
| US20100243554A1 (en) * | 2009-03-25 | 2010-09-30 | Nathan Herrin | Fluid Filter Assembly |
| US9943796B2 (en) * | 2009-03-26 | 2018-04-17 | Columbus Industries, Inc. | Multi layer pleatable filter medium |
| DE102010025215A1 (de) * | 2010-06-23 | 2011-12-29 | Hydac Filtertechnik Gmbh | Filtermaterial sowie dieses enthaltendes Filterelement |
-
2012
- 2012-12-24 US US14/440,665 patent/US10213709B2/en active Active
- 2012-12-24 JP JP2015542167A patent/JP6510417B2/ja active Active
- 2012-12-24 WO PCT/EP2012/005376 patent/WO2014075703A1/de not_active Ceased
- 2012-12-24 EP EP22180195.4A patent/EP4094819A1/de active Pending
- 2012-12-24 CN CN201280075997.6A patent/CN104661720B/zh active Active
- 2012-12-24 JP JP2015542168A patent/JP6258956B2/ja active Active
- 2012-12-24 US US14/418,154 patent/US11033838B2/en active Active
- 2012-12-24 CN CN201280077060.2A patent/CN104780990A/zh active Pending
- 2012-12-24 WO PCT/EP2012/005375 patent/WO2014075702A1/de not_active Ceased
- 2012-12-24 EP EP12812534.1A patent/EP2919879B1/de active Active
- 2012-12-24 EP EP12812873.3A patent/EP2919880A1/de not_active Withdrawn
-
2019
- 2019-01-11 US US16/245,403 patent/US10478759B2/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2395449A (en) * | 1942-03-31 | 1946-02-26 | Southwick W Briggs | Filter unit |
| GB725066A (en) * | 1953-06-16 | 1955-03-02 | Fram Corp | Improvements relating to separating or filtering media |
| JPS50115876U (de) * | 1974-03-05 | 1975-09-20 | ||
| EP1322396A2 (de) * | 2000-09-15 | 2003-07-02 | Cuno Incorporated | Spiralförmig gefaltete filterpatronen |
| EP1757355A1 (de) * | 2004-04-15 | 2007-02-28 | Entegris, Inc. | Gefaltete patronenfiltervorrichtung |
Non-Patent Citations (1)
| Title |
|---|
| See also references of WO2014075702A1 * |
Also Published As
| Publication number | Publication date |
|---|---|
| JP2016501120A (ja) | 2016-01-18 |
| CN104661720A (zh) | 2015-05-27 |
| JP6510417B2 (ja) | 2019-05-08 |
| WO2014075703A1 (de) | 2014-05-22 |
| US20150165352A1 (en) | 2015-06-18 |
| CN104661720B (zh) | 2016-11-09 |
| US20190143250A1 (en) | 2019-05-16 |
| JP2016501119A (ja) | 2016-01-18 |
| EP2919879A1 (de) | 2015-09-23 |
| US11033838B2 (en) | 2021-06-15 |
| WO2014075702A1 (de) | 2014-05-22 |
| US20150290562A1 (en) | 2015-10-15 |
| US10213709B2 (en) | 2019-02-26 |
| JP6258956B2 (ja) | 2018-01-10 |
| EP2919879B1 (de) | 2020-02-26 |
| CN104780990A (zh) | 2015-07-15 |
| EP4094819A1 (de) | 2022-11-30 |
| US10478759B2 (en) | 2019-11-19 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PUAI | Public reference made under article 153(3) epc to a published international application that has entered the european phase |
Free format text: ORIGINAL CODE: 0009012 |
|
| 17P | Request for examination filed |
Effective date: 20150402 |
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