EP2919880A1 - Filter element - Google Patents
Filter elementInfo
- 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- Withdrawn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
- 239000012530 fluid Substances 0.000 claims abstract description 26
- 230000007704 transition Effects 0.000 claims abstract description 7
- 238000001914 filtration Methods 0.000 claims description 8
- 238000011109 contamination Methods 0.000 claims description 4
- 239000002245 particle Substances 0.000 claims description 4
- 238000005452 bending Methods 0.000 claims description 3
- 238000010276 construction Methods 0.000 claims description 3
- 239000000463 material Substances 0.000 description 3
- 239000007788 liquid Substances 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 230000006641 stabilisation Effects 0.000 description 2
- 238000011105 stabilization Methods 0.000 description 2
- 230000000087 stabilizing effect Effects 0.000 description 2
- 230000032683 aging Effects 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000000903 blocking effect Effects 0.000 description 1
- 230000001427 coherent effect Effects 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000006378 damage Effects 0.000 description 1
- 230000007423 decrease Effects 0.000 description 1
- 230000003247 decreasing effect Effects 0.000 description 1
- 230000001419 dependent effect Effects 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 239000000446 fuel Substances 0.000 description 1
- 238000000265 homogenisation Methods 0.000 description 1
- 239000010720 hydraulic oil Substances 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 239000000314 lubricant Substances 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 238000000034 method Methods 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 230000002093 peripheral effect Effects 0.000 description 1
- 230000002000 scavenging effect Effects 0.000 description 1
- 230000008093 supporting effect Effects 0.000 description 1
- 230000037303 wrinkles Effects 0.000 description 1
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 (en) | 2012-11-14 | 2012-12-24 | Filter element |
Applications Claiming Priority (3)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210022285 DE102012022285A1 (en) | 2012-11-14 | 2012-11-14 | Filter element for filtration of process fluids, hydraulic fluids and liquid fuels and lubricants, has multi-layer structure of filter medium with filter folds, where all filter folds terminate along imaginary circular cylinder |
DE201210022283 DE102012022283A1 (en) | 2012-11-14 | 2012-11-14 | Multi-layer filter element for filtering pleated filter medium in hydraulic element, has filtering medium charged with lower depressing rate of fluid filtration during fluid flow at lower surface |
PCT/EP2012/005375 WO2014075702A1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22180195.4A Division EP4094819A1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
EP22180195.4A Previously-Filed-Application EP4094819A1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
Publications (1)
Publication Number | Publication Date |
---|---|
EP2919880A1 true EP2919880A1 (en) | 2015-09-23 |
Family
ID=47520890
Family Applications (3)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP12812873.3A Withdrawn EP2919880A1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
EP22180195.4A Pending EP4094819A1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
EP12812534.1A Active EP2919879B1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
Family Applications After (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP22180195.4A Pending EP4094819A1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
EP12812534.1A Active EP2919879B1 (en) | 2012-11-14 | 2012-12-24 | Filter element |
Country Status (5)
Country | Link |
---|---|
US (3) | US11033838B2 (en) |
EP (3) | EP2919880A1 (en) |
JP (2) | JP6510417B2 (en) |
CN (2) | CN104780990A (en) |
WO (2) | WO2014075702A1 (en) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB2537325A (en) * | 2014-02-19 | 2016-10-12 | Essentra Porous Tech Corp | Vaned filtration media and methods of making the same |
EP3219378A1 (en) * | 2016-03-15 | 2017-09-20 | Schuko Heinz Schulte-Südhoff GmbH & Co. KG | Filter cartridge for the purification of air |
US11752470B2 (en) | 2016-08-29 | 2023-09-12 | Emd Millipore Corporation | Fixed rigid wall device for compressed pleat configuration filters |
US11439943B2 (en) | 2016-10-20 | 2022-09-13 | Cummins Filtration Ip, Inc. | Interrupted, directional emboss of flat sheet |
DE102016013166A1 (en) * | 2016-11-04 | 2018-05-09 | Hydac Filter Systems Gmbh | filter element |
DE112017005542T5 (en) | 2016-12-15 | 2019-07-25 | Cummins Filtration Ip, Inc. | Tetrahedral filter media |
WO2018191147A1 (en) | 2017-04-11 | 2018-10-18 | Cummins Filtration Ip, Inc. | Panel filter element |
JP2020523490A (en) | 2017-06-15 | 2020-08-06 | ポレックス テクノロジーズ コーポレーション | Monolithic porous fiber media with distinguishable densities or fiber diameters |
DE102018101804A1 (en) * | 2018-01-26 | 2019-08-01 | Sartorius Stedim Biotech Gmbh | filter module |
CN108671633A (en) * | 2018-08-01 | 2018-10-19 | 德清国能过滤器材有限公司 | Corrugated filter core |
CN109289537A (en) * | 2018-11-07 | 2019-02-01 | 无锡普力环保科技有限公司 | A kind of filter core of high-flow filter |
DE102019120646A1 (en) * | 2019-07-31 | 2021-02-04 | Mann+Hummel Gmbh | Filter element, cabin air filter and manufacturing process |
KR20210032730A (en) * | 2019-09-17 | 2021-03-25 | 코웨이 주식회사 | Pleated-type Filter Member |
US20230024676A1 (en) * | 2021-07-22 | 2023-01-26 | Gonzalo Fuentes Iriarte | Systems and methods for electric vehicle energy recovery |
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 (en) * | 1974-03-05 | 1975-09-20 | ||
EP1322396A2 (en) * | 2000-09-15 | 2003-07-02 | Cuno Incorporated | Spiral pleated filter cartridges |
EP1757355A1 (en) * | 2004-04-15 | 2007-02-28 | Entegris, Inc. | Pleated-type cartridge filter device |
Family Cites Families (25)
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 (en) * | 1973-06-11 | 1975-02-21 | ||
JPS60238111A (en) * | 1984-05-11 | 1985-11-27 | Nippon Rokaki Kk | Filter element |
WO1987001301A1 (en) * | 1985-09-06 | 1987-03-12 | Eastman Kodak Company | Conductive filter cartridge and method for making same |
JPH0510898Y2 (en) * | 1988-10-25 | 1993-03-17 | ||
FR2673852B1 (en) | 1991-03-13 | 1994-04-15 | Labinal Precision Mecanique | IMPROVEMENTS IN OR RELATING TO FILTRATION CARTRIDGES COMPRISING A FILTER ELEMENT CONSISTING OF A PLEATED SHEET. |
US5275743A (en) * | 1991-12-10 | 1994-01-04 | Pall Corporation | Filter and filtration method |
JPH07243356A (en) * | 1994-03-03 | 1995-09-19 | Toyo Eremento Kogyo Kk | Filter element |
EP0840644B1 (en) | 1995-07-18 | 1999-04-28 | Parker-Hannifin Corporation | Conductive filter element |
EP1140319B1 (en) | 1999-01-07 | 2005-06-29 | Cuno Incorporated | Pleated filter element and method of forming a pleated filter element |
FR2791579A1 (en) * | 1999-04-02 | 2000-10-06 | Albrecht Philippe | Oil or fuel filter cartridge for e.g. vehicle, has annular plastic joint molded over each end face of cylindrical filter element, with rigid layer molded over element and flexible resilient hub |
WO2001037969A1 (en) * | 1999-11-23 | 2001-05-31 | Pall Corporation | Conductive filter cartridge |
CN2581042Y (en) * | 2002-10-24 | 2003-10-22 | 张聪明 | Improved dust collector filtering bag |
DE10250969A1 (en) * | 2002-11-02 | 2004-05-19 | Hydac Filtertechnik Gmbh | Filter cylinder for hydraulic oil, in a hydraulic system, has a pleated structure with pleat folds covering the radial gap between the outer mantle and inner tube and shorter intermediate folds |
DE102004005202A1 (en) | 2004-02-03 | 2005-08-25 | Hydac Filtertechnik Gmbh | filter element |
AU2005295757A1 (en) * | 2004-10-15 | 2006-04-27 | 3M Innovative Properties Company | Pleated multi-layer filter media and cartridge |
JP4066998B2 (en) * | 2004-12-24 | 2008-03-26 | 三菱電機株式会社 | Reflective liquid crystal display |
JP4634890B2 (en) | 2005-08-15 | 2011-02-16 | インテグリス・インコーポレーテッド | Pleated cartridge filter device |
DE102008004344A1 (en) * | 2008-01-15 | 2009-08-06 | Hydac Filtertechnik Gmbh | filter |
CN101411952A (en) * | 2008-08-26 | 2009-04-22 | 张金松 | Folding type water purifying filter element |
DE202009000969U1 (en) * | 2009-01-26 | 2010-07-01 | Mann+Hummel Gmbh | filter element |
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 (en) * | 2010-06-23 | 2011-12-29 | Hydac Filtertechnik Gmbh | Filter material for use in filter element for filtration of e.g. fuel, has supporting structures comprising electrically conductive structural elements formed by linear elements that run transverse or inclined to pleat folds of material |
-
2012
- 2012-12-24 EP EP12812873.3A patent/EP2919880A1/en not_active Withdrawn
- 2012-12-24 WO PCT/EP2012/005375 patent/WO2014075702A1/en active Application Filing
- 2012-12-24 JP JP2015542167A patent/JP6510417B2/en active Active
- 2012-12-24 EP EP22180195.4A patent/EP4094819A1/en active Pending
- 2012-12-24 US US14/418,154 patent/US11033838B2/en active Active
- 2012-12-24 WO PCT/EP2012/005376 patent/WO2014075703A1/en active Application Filing
- 2012-12-24 US US14/440,665 patent/US10213709B2/en active Active
- 2012-12-24 JP JP2015542168A patent/JP6258956B2/en active Active
- 2012-12-24 CN CN201280077060.2A patent/CN104780990A/en active Pending
- 2012-12-24 EP EP12812534.1A patent/EP2919879B1/en active Active
- 2012-12-24 CN CN201280075997.6A patent/CN104661720B/en active Active
-
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 (en) * | 1974-03-05 | 1975-09-20 | ||
EP1322396A2 (en) * | 2000-09-15 | 2003-07-02 | Cuno Incorporated | Spiral pleated filter cartridges |
EP1757355A1 (en) * | 2004-04-15 | 2007-02-28 | Entegris, Inc. | Pleated-type cartridge filter device |
Non-Patent Citations (1)
Title |
---|
See also references of WO2014075702A1 * |
Also Published As
Publication number | Publication date |
---|---|
WO2014075703A1 (en) | 2014-05-22 |
US11033838B2 (en) | 2021-06-15 |
JP2016501119A (en) | 2016-01-18 |
JP6258956B2 (en) | 2018-01-10 |
EP2919879B1 (en) | 2020-02-26 |
US10213709B2 (en) | 2019-02-26 |
US20150290562A1 (en) | 2015-10-15 |
US20150165352A1 (en) | 2015-06-18 |
CN104661720A (en) | 2015-05-27 |
JP2016501120A (en) | 2016-01-18 |
WO2014075702A1 (en) | 2014-05-22 |
CN104780990A (en) | 2015-07-15 |
US20190143250A1 (en) | 2019-05-16 |
EP2919879A1 (en) | 2015-09-23 |
US10478759B2 (en) | 2019-11-19 |
JP6510417B2 (en) | 2019-05-08 |
CN104661720B (en) | 2016-11-09 |
EP4094819A1 (en) | 2022-11-30 |
Similar Documents
Publication | Publication Date | Title |
---|---|---|
WO2014075702A1 (en) | Filter element | |
EP2616157B1 (en) | Filter element | |
DE69906109T2 (en) | FILTER AND METHOD FOR FILTRATING A FLUID | |
EP0656223A1 (en) | Backwashfilter | |
DE102008026485A1 (en) | Concentric coalescence and combination filter | |
DE2126080B2 (en) | Tubular separator for filtering and separating water and solids from fuel | |
DE102013007605A1 (en) | filter element | |
EP2700438B1 (en) | Filter device | |
EP3107708A1 (en) | Device for filtering a plastic melt | |
EP3883665B1 (en) | Filter element | |
DE102012022285A1 (en) | Filter element for filtration of process fluids, hydraulic fluids and liquid fuels and lubricants, has multi-layer structure of filter medium with filter folds, where all filter folds terminate along imaginary circular cylinder | |
DE102004061078A1 (en) | Filter component for filter element in form of filter cylinder comprises further structural layer arranged on one of upper sides of first structural layer or between them | |
DE102013111149B4 (en) | Filter system | |
WO2020244823A1 (en) | Filter apparatus | |
DE10038412A1 (en) | Filter element with a filter medium applied to a support body | |
DE1922976A1 (en) | Filter insert for liquids, especially for the lubricating oil of Bronnkraftmaschinen | |
DE3838720A1 (en) | Lubricant filter for liquid lubricants | |
EP3536391A1 (en) | Filter | |
DE102012022283A1 (en) | Multi-layer filter element for filtering pleated filter medium in hydraulic element, has filtering medium charged with lower depressing rate of fluid filtration during fluid flow at lower surface | |
DE10334041B4 (en) | Filter element for frontal flow | |
EP3167947B1 (en) | Filter device | |
DE112018003163T5 (en) | FILTER ELEMENT WITH A SPACER | |
WO2022079116A1 (en) | Filter device and separating apparatus | |
WO2023151837A1 (en) | Filter apparatus | |
AT512190B1 (en) | DEVICE FOR THE DEPOSITION OF SUBSTANCES |
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 |
|
AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR |
|
AX | Request for extension of the european patent |
Extension state: BA ME |
|
DAX | Request for extension of the european patent (deleted) | ||
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
17Q | First examination report despatched |
Effective date: 20180419 |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: EXAMINATION IS IN PROGRESS |
|
APBK | Appeal reference recorded |
Free format text: ORIGINAL CODE: EPIDOSNREFNE |
|
APBN | Date of receipt of notice of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA2E |
|
APBR | Date of receipt of statement of grounds of appeal recorded |
Free format text: ORIGINAL CODE: EPIDOSNNOA3E |
|
APAF | Appeal reference modified |
Free format text: ORIGINAL CODE: EPIDOSCREFNE |
|
RAP3 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: HYDAC FILTERTECHNIK GMBH |
|
APBT | Appeal procedure closed |
Free format text: ORIGINAL CODE: EPIDOSNNOA9E |
|
STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN |
|
18W | Application withdrawn |
Effective date: 20220627 |