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WO2018177618A1 - Élément filtrant pour un filtre à fluide, filtre à fluide et procédé pour la fabrication d'un élément filtrant - Google Patents

Élément filtrant pour un filtre à fluide, filtre à fluide et procédé pour la fabrication d'un élément filtrant Download PDF

Info

Publication number
WO2018177618A1
WO2018177618A1 PCT/EP2018/050767 EP2018050767W WO2018177618A1 WO 2018177618 A1 WO2018177618 A1 WO 2018177618A1 EP 2018050767 W EP2018050767 W EP 2018050767W WO 2018177618 A1 WO2018177618 A1 WO 2018177618A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter element
fluid
wave structure
edges
Prior art date
Application number
PCT/EP2018/050767
Other languages
German (de)
English (en)
Inventor
Ralf Disson
Hartmut Harr
Peter Koppi
Wolfgang ZUPANC
Original Assignee
Mahle International Gmbh
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 Mahle International Gmbh filed Critical Mahle International Gmbh
Publication of WO2018177618A1 publication Critical patent/WO2018177618A1/fr

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
    • 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
    • B01D46/522—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with specific folds, e.g. having different lengths
    • 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
    • B01D2201/127—Pleated filters with means for keeping the spacing between the pleats

Definitions

  • the invention relates to a filter element for a fluid filter, in particular a fuel filter, a lubricant filter or a water filter, in a motor vehicle.
  • the invention also relates to a fluid filter with the filter element.
  • the invention relates to a method for producing the filter element.
  • Fluid filters - such as fuel filters or lubricant filters - are used in a motor vehicle, for example, to free the fuel or the lubricant of solid particles and thereby to extend the life of a vehicle or motor supplied with the fuel or the lubricant.
  • the fluid filter in this case has a filter element which is made of a fine mesh material. The fine-meshed material can be traversed by the fluid and the solid particles can no longer penetrate the filter material from a certain size.
  • the filter element is constructed in the form of a substantially hollow-cylindrical fold star and individual folds of the filter element are supported against each other. Another way to increase the filter area is known for example from the document US 2,801, 009.
  • the fluid - fuel, lubricant or water - flows to the filter element at a very high pressure. If the flow or in particular the outflow of the fluid - for example by adhering folds - prevented, so the efficiency and the life of the filter element are drastically reduced.
  • US 2016/0177891 A1 discloses that the flow of fluid through deposits between the individual outer folds of the pleated star can be improved. However, such a solution is associated with a high cost and cost and the outflow of the fluid can still not be improved.
  • the object of the invention is therefore to provide a filter element and a fluid filter with the filter element, in which the outflow of the fluid is facilitated.
  • a further object of the invention is to provide a cost-effective and reduced-cost method for producing such a filter element.
  • the present invention is based on the general idea, a filter element for a fluid filter in a motor vehicle to impart a structure that facilitates the outflow of the fluid.
  • the filter element has a substantially hollow cylindrical pleat star with a raw side and a clean side.
  • the hollow cylindrical fold star has several folds, which are connected via inner and outer folding edges.
  • at least one inner folded edge has a wave structure running at least in regions in an axial direction and resting against the adjacent inner folded edges.
  • the wave structure extends in the axial direction and forms together with the adjacent folded edges a plurality of radial channels, which facilitate the outflow of the fluid from the filter element.
  • the wave structure prevents the adjacent folds from adhering to each other over a large area, so that a surface of the filter element that can be used for the outflow is retained.
  • the inventive film terelement facilitates the outflow of the fluid, thereby improving the efficiency of the filter element and the life can be extended.
  • the wave structure of the adjacent folded edges can be designed so that shaft tips of the first folded edge rests on shaft tips of the adjacent folded edge. In this way, radial channels are formed between the abutting shaft tips, through which the fluid can flow.
  • the wave structure can extend over the folded edge only in regions, the wave structure of the first folded edge resting on a region without the wave structure of the adjacent folded edge. Between the folded edge without the wave structure and the adjacent folded edge with the wave structure also channels for the outflow of the fluid are formed.
  • the inner folded edges are arranged alternately with the wave structure and without the wave structure.
  • every second or every third folded edge may have the wave structure, while the intermediate folded edges have no wave structure.
  • channels are formed between the folded edges without the wave structure and the adjacent folded edges with the wave structure, through which the fluid can flow freely.
  • the folded edges are supported against each other, so that adhesion of the adjacent folds to each other is prevented.
  • the wave structure extends from the respective inner folded edge in a radial direction into the fold over a width between 1 mm and 5 mm, preferably between 2 mm and 3 mm.
  • the channels for discharging the fluid have a sufficient length in the radial direction and filtering properties of the Filter material is not affected by the impressed wave structure.
  • the outflow of the fluid is facilitated and the filterable area of the filter element is obtained.
  • the wave structure has a plurality of shafts which extend between two of the adjacent inner folded edge facing shaft tips.
  • the width of the waves on a folded edge can remain constant or vary in the axial direction.
  • the width of the waves decreases or increases from the middle of the folded edge in the axial direction. In this way, the outflow of the fluid from the filter element can be influenced.
  • the adjacent shaft tips to each other have a distance between 2 mm and 8 mm, preferably between 4 mm and 6 mm.
  • a plurality of channels are formed for the outflow of the fluid and, in addition, the folds are advantageously supported against one another.
  • the invention also relates to a fluid filter for a motor vehicle with a cylindrical filter body having a fluid inlet and a fluid outlet.
  • a filter element is arranged coaxially, wherein a raw side of the filter element to the fluid inlet and a clean side of the filter element are fluidly connected to the fluid outlet.
  • the fluid filter has the filter element described above.
  • At least one inner folded edge of the filter element has the wave structure, by means of which the individual folds of the filter element can be supported against each other. Furthermore, due to the wave- structure radial channels formed for the outflow of the fluid, so that the fluid can flow out of the filter element better.
  • the invention also relates to a method for producing the filter element described above.
  • a filter material is folded in a folding step, thereby forming a plurality of folds connected by internal and external folding edges.
  • the folded filter material is connected to a hollow cylindrical pleated star with a clean side and with a raw side.
  • the internal folded edges a wave structure is impressed in a pressing step. An impressing of the wave structure can take place, for example, by a press which imprints the wave structure at a pressure of the inner folded edges.
  • the pressing step can be carried out after the folding step.
  • the wave structure is impressed on one side of the folded material.
  • the pressing step can also be carried out simultaneously with the folding step, wherein, for example, the folded edges are formed by impressing the wave structure. In this way, the manufacturing time and the manufacturing cost can be reduced.
  • the pressing step be carried out after the forming step.
  • the pleat star can be shaped and then the inner folded edges of the wave structure can be impressed by a special pressing tool.
  • Fig. 1 is a view of a filter element according to the invention
  • Fig. 2 is a sectional view of a filter element according to the invention.
  • Fig. 3 is a plan view of internal folding edges of a filter element, each of the folding edges having an impressed wave structure;
  • Fig. 4 is a plan view of internal folding edges of a filter element, with each second of the folding edges having an impressed wave structure
  • Fig. 5 is a plan view of internal folding edges of a filter element, wherein each third of the folded edges has an impressed wave structure
  • FIG. 6 shows a sequence of a method according to the invention for producing a filter element.
  • the filter element 1 shows a schematic view of a filter element 1 according to the invention for a fluid filter in a motor vehicle, in particular for a fuel filter, for a lubricant filter or for a water filter.
  • the filter element 1 has a substantially hollow-cylindrical pleated star 2 with a raw side 3 and with a clean side 4.
  • the hollow cylindrical pleated star 2 also has a plurality of folds 5, which are connected via inner folded edges 6 and over outer folded edges 7.
  • the inner folded edges 6 have alternately a running in an axial direction 8 and adjacent to the adjacent inner folded edges 6 wave structure 9.
  • FIG. 2 shows a schematic sectional view of the filter element 1 according to the invention.
  • the inner folded edges 6 with the wave structure 9 and without the wave structure 9 are arranged alternately.
  • the wave structure 9 extends from the respective inner folded edge 6 in a radial direction 10 into the respective fold 5 over a width between 1 mm and 5 mm, preferably between 2 mm and 3 mm. In this way, 9 are affected by the imprinted wave structure filtration properties of the filter material only insignificantly.
  • channels 1 1 facilitate the outflow of a fluid Ids - such as the fuel, the lubricant or the water - on the clean side 4, whereby the efficiency and the life of the filter element 1 are increased.
  • the wave structure 9 prevents a large-area adhesion of the adjacent folds 5 to one another, so that a usable surface for the outflow of the filter element 1 is maintained.
  • FIG. 3 shows a schematic plan view of the inner folded edges 6 of the filter element 1, wherein each of the folded edges 6 has the wave structure 9.
  • the wave structure 9 of the adjacent inner folded edges 6 is configured such that a shaft tip 12 of the folded edge 6 rests on a shaft tip 12 of the adjacent folded edge 6.
  • the channels 1 1 are formed in the radial direction 10 between the abutting shaft tips 12, through which the fluid can flow.
  • the adjacent shaft tips 12 may have a distance between 2 mm and 8 mm, preferably between 4 mm and 6 mm.
  • FIG. 4 shows a schematic plan view of the inner folded edges 6 of the filter element 1, wherein every second one of the folded edges 6 has the wave structure 9.
  • FIG. 5 shows an alternative embodiment of the filter element 1, in which every third of the inner folded edges 6 has the wave structure 9. Again, the channels 1 1 are formed between the adjacent folds 5, which facilitate the outflow of the fluid and prevent adhesion of the folds 5 to each other advantageous.
  • FIG. 6 shows a schematic sequence of a method 13 according to the invention for producing the filter element 1.
  • a filter material is folded in a folding step 14, thereby forming a plurality of folds 5 connected by the inner fold edges 6 and the outer fold edges 7.
  • the folded filter material is connected to the hollow-cylindrical pleat star 2 with the raw side 3 and with the clean side 4.
  • the inner folded edges 6, the wave structure 9 is impressed in a pressing step 16.
  • the pressing step 16 may be performed after or simultaneously with the folding step 14. Alternatively, the pressing step 16 may be performed after the forming step 15.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtration Of Liquid (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne un élément filtrant (1) pour un filtre à fluide dans un véhicule à moteur, en particulier pour un filtre à carburant, pour un filtre à lubrifiant ou pour un filtre à eau. L'élément filtrant (1) comprend une étoile plissée (2) essentiellement cylindrique et creuse avec un côté brut (3) et un côté propre (4). L'étoile plissée (2) cylindrique creuse comprend plusieurs plis (5) reliés au moyen de bords de pliage internes (6) et de bords de pliage externes (7). Selon l'invention, au moins un bord de pliage interne (6) comprend une structure ondulée (9) s'étendant au moins par zones dans une direction axiale (8) et adjacente aux bords de pliage internes (6) voisins. L'invention concerne aussi un filtre à fluide avec l'élément filtrant (1) et un procédé (13) pour la fabrication de l'élément filtrant (1).
PCT/EP2018/050767 2017-03-29 2018-01-12 Élément filtrant pour un filtre à fluide, filtre à fluide et procédé pour la fabrication d'un élément filtrant WO2018177618A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017205330.5 2017-03-29
DE102017205330.5A DE102017205330A1 (de) 2017-03-29 2017-03-29 Filterelement für einen Fluidfilter, Fluidfilter und Verfahren zum Herstellen eines Filterelements

Publications (1)

Publication Number Publication Date
WO2018177618A1 true WO2018177618A1 (fr) 2018-10-04

Family

ID=61168049

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/050767 WO2018177618A1 (fr) 2017-03-29 2018-01-12 Élément filtrant pour un filtre à fluide, filtre à fluide et procédé pour la fabrication d'un élément filtrant

Country Status (2)

Country Link
DE (1) DE102017205330A1 (fr)
WO (1) WO2018177618A1 (fr)

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801009A (en) 1954-02-10 1957-07-30 Gen Motors Corp Filter having outwardly extending pleats
US3058594A (en) * 1960-06-06 1962-10-16 Purolator Products Inc Pleated paper filter
US3726408A (en) * 1966-04-11 1973-04-10 Wood M Sa Structures of sheet materials made of asymmetric folds
JPS63214312A (ja) * 1987-02-28 1988-09-07 Tsuchiya Mfg Co Ltd 環状笠形の濾過エレメント
WO2008039377A1 (fr) * 2006-09-27 2008-04-03 Donaldson Company, Inc. Dispositif à matériau filtrant, cartouche filtrante et procédés
US20160177891A1 (en) 2013-07-19 2016-06-23 Donaldson Company, Inc. Filter element, air cleaner, and methods

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2112360B2 (de) * 1971-03-15 1973-04-05 Purolator Filter GmbH, 7110 Öhringen Papierfilter, insbesondere fuer die verwendung bei brennkraftmaschinen
GB1518554A (en) * 1975-11-20 1978-07-19 Evans Adlard & Co Disposable filter element
DE4433129A1 (de) * 1994-09-16 1996-03-28 Gore W L & Ass Gmbh Verfahren zur Herstellung eines Filtermediums
US20120186452A1 (en) * 2011-01-26 2012-07-26 Alan Smithies Multiple Layer HEPA Filter and Method of Manufacture
EP2764905A1 (fr) * 2013-02-12 2014-08-13 Mann + Hummel Gmbh Corps de filtration

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2801009A (en) 1954-02-10 1957-07-30 Gen Motors Corp Filter having outwardly extending pleats
US3058594A (en) * 1960-06-06 1962-10-16 Purolator Products Inc Pleated paper filter
US3726408A (en) * 1966-04-11 1973-04-10 Wood M Sa Structures of sheet materials made of asymmetric folds
JPS63214312A (ja) * 1987-02-28 1988-09-07 Tsuchiya Mfg Co Ltd 環状笠形の濾過エレメント
WO2008039377A1 (fr) * 2006-09-27 2008-04-03 Donaldson Company, Inc. Dispositif à matériau filtrant, cartouche filtrante et procédés
US20160177891A1 (en) 2013-07-19 2016-06-23 Donaldson Company, Inc. Filter element, air cleaner, and methods

Also Published As

Publication number Publication date
DE102017205330A1 (de) 2018-10-04

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