WO2016184739A1 - Filterelement mit filterbalg - Google Patents
Filterelement mit filterbalg Download PDFInfo
- Publication number
- WO2016184739A1 WO2016184739A1 PCT/EP2016/060505 EP2016060505W WO2016184739A1 WO 2016184739 A1 WO2016184739 A1 WO 2016184739A1 EP 2016060505 W EP2016060505 W EP 2016060505W WO 2016184739 A1 WO2016184739 A1 WO 2016184739A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- beads
- filter element
- bellows
- filter medium
- Prior art date
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
- B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
- B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
- B01D46/2411—Filter cartridges
-
- 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
- B01D46/523—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with means for maintaining spacing between the pleats or folds
Definitions
- the invention relates to a filter element for filtering a fluid with a filter bellows from a zigzag folded filter medium, in particular for use as a round filter an internal combustion engine, in particular a motor vehicle and a method and a system for producing such a filter element.
- Forehead wrinkles are the two outer folds, on opposite end faces of the filter bellows of a filter element.
- End edges are the two free edges of the filter medium from which the filter bellows is formed, which run along the end folds and limit these at the end faces of the filter bellows.
- the front edges of the filter bellows are the other two free edges of the filter bellows, which extend between the end edges and run in accordance with the folding of the filter bellows.
- the fold edges are the edges along which the filter media is folded. In a known from the market zigzag folded, approximately cuboid filter bellows, the front edges and the folding edges are usually straight and parallel to each other.
- the end edges extend from the side of the filter bellows seen zigzag and perpendicular to the end edges and the fold edges.
- the front edges of the filter bellows which later have an approximately rectangular imaginary envelope, run straight and parallel to one another.
- the imaginary envelope is spanned by the end edges, the fold edges or end edges adjacent to a clean fluid side of the filter bellows, and the fold edges or end edges adjacent to a raw fluid side.
- Filterbälgen of flat filter elements the filter media are not closed, ie, the forehead wrinkles are just like the front edges are not connected. In contrast, in Filterbälgen of round filter elements, the filter media are closed, ie, their forehead wrinkles are interconnected.
- Filter bellows of flat filter elements can be flat, but also have bends in different directions. In filter systems where repeated or cyclic fluctuations in the flow rate of the fluid being filtered through the filter occur, fatigue failure of the filter can be a problem. This particularly occurs in systems with large flow changes, ie, from zero to full flow and back to zero, as is the case in filter systems for piston pumps, for example, as used in power plants.
- a filter system which comprises a pleated filter element having longitudinally extending pleats having crests and a sheath helically wrapped around the filter element abutting the crests of the pleats and openings for increasing the dirt capacity of the filter element, wherein the total area of the openings is less than approximately half of the total surface defined by the crests of the pleats.
- the filter element comprises a pleated composite having first and second extruded polymeric mesh layers and a filter layer disposed therebetween. Disclosure of the invention
- An object of the invention is to provide a filter element for filtering a fluid which provides a stabilization and drainage possibility in the filter medium in a manner favorable in terms of production and cost. Another object is to provide a method and a system for producing a filter element, which provides a stabilization and drainage possibility in the filter medium in terms of production and cost favorable.
- the above object is achieved according to one aspect of the invention of a filter element with a filter medium having one or more beads which extend transversely to the folded edges of the filter medium and which in the normal state of the filter bellows, a flow of the fluid perpendicular to the folded edges of the filter bellows cause.
- the further object is achieved by a method and a system for producing such a filter element with a filter medium having one or more beads, which extend transversely to fold edges of the filter medium and which in the normal state of the filter bellows, a flow of the fluid perpendicular to the folding edges of the Effect filter bellows.
- a filter element for filtering a fluid in particular an internal combustion engine, in particular a motor vehicle proposed, comprising a filter bellows of a filter medium, which is folded in folds zigzag folded into folds, each extending between opposite end edges of the filter bellows, and which filter medium is intended to flow through with the fluid from a raw side of the filter element to a clean side.
- the filter medium on at least one of its flowed through surfaces on one or more beads which extend transversely to folding edges of the filter medium and which cause in the normal operating condition of the filter bellows a flow of at least a portion of the fluid perpendicular to the folded edges of the filter bellows, and wherein a width is specifically varied to height ratio of the beads along the ridges.
- the zigzag folds may be formed with sharp edges or with rounded edges.
- An advantage of the solution according to the invention is that, in contrast to conventional designs of filter elements, for which stabilizing and drainage purposes on the clean side usually have a grating on the filter medium. is used instead of the grid glue or plastic beads before or after embossing the filter medium in the form of beads are applied. These beads can be applied continuously or at intervals along the processing direction of the filter medium, which are completely or at least substantially cured prior to setting up the folds of the filter medium and ensure drainage and ensure a stabilizing effect of the filter medium.
- the grid and the lamination process can thus be omitted.
- the beads may be in particular glue or plastic caterpillars.
- the glue or plastic caterpillars can be applied during bellows production.
- the solution according to the invention thus represents a considerable time and cost savings compared with the conventional lamination process.
- the folds of the filter bellows can be designed both with rounded and pointed fold edges in the application according to the invention of the glue or plastic caterpillars.
- the drainage effect of the beads consists in diverting at least part of the filtered fluid along the beads from the folds of the filter bellows into the inner region of the filter element, so that the fluid can not accumulate in the folds and thus limit the flow of the fluid. Also, the deposition of possible dirt particles can be distributed over the surface of the filter medium.
- a constant amount of material of the glue or plastic beads per unit time can be applied to the filter bellows and the width and height of the applied material strip can be selectively varied in a subsequent embossing step. This allows a very high production speed, in particular in the case of a rotary folding system.
- the beads in the folded state of the filter medium cause a spacing of opposite fold edge surfaces of a fold of the filter bellows.
- the beads can certainly have a certain spacing.
- the beads can prevent opposing fold edge surfaces of a fold of the filter bellows from touching or even sticking together since the opposite beads meet at the same height and thus ensure a distance between the Faltkanten inhabit.
- a distance between the parallel beads of the order of magnitude, for example 5 to 7 mm.
- this value is dependent on the rigidity of the filter medium and the fluid to be filtered, as well as the material of the bead and can be adjusted accordingly.
- a height of the bead of eg 0.1 mm to 3 mm is advantageous. This value also depends on the boundary conditions of the filter medium, the fluid and the material.
- a vacuum applied to the filter element in particular during operation of an internal combustion engine in the intake tract, can cause the interspace folds to collapse locally or even over the entire width of the filter medium, ie to come into direct contact with filter medium sections located on the clean side.
- tensions and deformations due to material irregularities, in particular with regard to nonuniform impregnations, it is also possible for tensions and deformations to occur which lead to a raw-side collapse.
- Such collapsed areas are no longer flowed through, whereby the filtration performance of the filter element is restricted.
- Such a collapse of regions of the filter bellows can be prevented by applying beads according to the invention to the filter medium, since the beads, on the one hand, effect a spacing of the folded edge surfaces, and on the other constitute a stiffening of the filter medium.
- the beads along their longitudinal extent may have narrow elevations and wide tapers.
- the taper can be formed as an embossment of the folded edges.
- the folding edges are embossed into the filter medium only after the beads have been applied to the filter medium, the beads can be embossed in this way and thus have the desired tapers at the points of intersection with the folded edges.
- the beads may be arranged on the intended clean side of the filter medium.
- a drainage effect can be represented by the beads by deriving the filtered fluid.
- the beads are formed by applying a hot melt adhesive.
- Such a process can be favorably integrated into the usual production process in the manufacture of a filter bellows, in which the filter medium usually runs in long paths through an embossing unit.
- additional adhesive application stations can be provided, which apply the hot melt adhesive at the same speed, so that the normal production process is not hindered. Also interruptions in the applied beads can be provided so low by the glue application stations are driven accordingly and provided with valves.
- the filter element can be formed from a filter medium which consists of cellulose, meltblown fibers, micro- or nanofibers, woven or knitted fibers, a non-woven or a combination of these substances.
- the filter bellows of the filter element can be designed as a hollow cylindrical round element with a star-folded filter medium.
- the originally flat filter bellows can be formed from a zigzag-folded filter medium into a hollow cylinder which is closed, for example glued, along an end edge. The fluid to be filtered can then flow through the filter medium via the outer surface of the hollow cylinder and flow away via the inner region of the hollow cylindrical filter along the axis of the hollow cylinder.
- the invention relates to the use of the filter element as a round filter for filtering a fluid, in particular as a round filter of an internal combustion engine.
- Such round filters are preferably used in the automotive field as air, oil, or fuel filter or the like and used on the internal combustion engine as interchangeable filter elements with regular change intervals.
- the invention relates to a method for producing a filter element according to the invention comprising the following manufacturing steps of a filter bellows: unwinding the filter medium from a roll, storing the filter medium in a goods storage, applying beads to the filter medium prior to embossing for the formation of folded edges with a constant amount of material, pressing the beads, placing the folded edges to a zigzag folded filter bellows.
- Such a process can be favorably integrated into the usual production process in the manufacture of a filter bellows, in which the filter medium usually runs in long paths through an embossing unit.
- additional adhesive application stations can be provided, which apply the hot melt adhesive at the same speed, so that the normal production process is not hindered.
- interruptions in the applied beads can be provided so low by the glue application stations are driven accordingly and provided with valves.
- the method for producing a filter element may comprise further manufacturing steps of a filter bellows such as heating the filter medium in preparation for embossing, embossing folding edges in the filter medium with simultaneous pressing of the beads with different heights and widths of the beads.
- a filter bellows such as heating the filter medium in preparation for embossing, embossing folding edges in the filter medium with simultaneous pressing of the beads with different heights and widths of the beads.
- the width-to-height ratio of the beads along the beads is specifically varied.
- the desired width to height ratio of the beads is preferably predetermined / determined by the design of the embossing roller.
- the embossing of folded edges in the filter medium can be made favorable by preheating the filter medium, since the embossed fold edges remain so permanently.
- the invention relates to a system for producing a filter element, which comprises at least the following aggregates for producing a filter bellows: an unwinder, a goods storage, a polymer application station for applying the beads, a pressure roller, a flow heater, a stamping unit, and a Faltenaufstellaggregat.
- a hot melt adhesive application station if a hot melt adhesive bead is used as the bead.
- the embossing unit has an embossing roller having recesses on its surface, which cause embossing surveys and rejuvenation of the beads.
- Fig. 1 is an isometric view of a filter element according to an embodiment of the invention
- FIG. 2 shows a partial cross section through a filter element according to an embodiment of the invention.
- Fig. 3 is a plan view of a filter medium according to an embodiment of the
- FIG. 4 schematically shows a plan view of a detail of an advantageous embossing roll for selectively influencing the height-to-width ratio of glue or plastic caterpillar;
- Fig. 5 is a schematic representation of a system for producing a filter element according to an embodiment of the invention.
- FIG. 1 shows an isometric view of a filter element 1 10 according to an embodiment of the invention.
- the filter element 1 10 for filtering a fluid comprises a filter bellows 1 12 made of a filter medium 1 14, which is folded zigzag along fold edges 126 into folds 134 which respectively extend between opposite end edges 122a, 122b of the filter bellows 12.
- the filter medium 1 14 is for flowing through with the fluid from a raw side 150 of the filter element to a clean 152 and provided in a throughflow direction 154 from an outer surface to an inner region of the filter element 1 10.
- the filter medium 14 has a plurality of beads 142 on the clean side 152 (shown in FIGS.
- the filter element 110 in FIG. 1 is designed as a hollow-cylindrical round filter element with a star-folded filter medium 14. Such round filter elements are preferably used in the automotive field as air, oil, or fuel filter or the like and used on the internal combustion engine as replaceable filter elements 1 10 with regular replacement intervals.
- the filter bellows 1 12 is closed at both end faces with end disks 1 1 6, 1 18, which comprise a central central tube 138, through which the filtered fluid can also flow in the flow direction 154.
- FIG. 2 shows a partial cross section through a filter element 110 according to an exemplary embodiment of the invention, as shown in FIG.
- the cross section shows a plurality of folds 134 of the filter bellows 1 12, which are folded around at fold edges 126.
- the fluid to be filtered passes from a raw side 150 outside of the round filter 110 into an inner region of the filter element 110 with the clean side 152.
- the inner side of the filter bellows 12 is stiffened by a central tube 138, which can be partially seen in a section.
- the filter medium 1 14 has 152 on the clean side 152 beads.
- the beads 142 in addition to the drainage effect for discharging the filtered fluid, in the folded state of the filter medium 1 14 at least in the operating state, a spacing of opposite Faltkanten inhabit 120a, 120b of a fold 134 of the filter bellows 1 12.
- the beads 142 are in particular on the Faltkanten inhabit 120a, 120b and not arranged in the curvature region of the folds 134.
- the beads 142 along their longitudinal extent from fold edge 126 to opposite fold edge 126, ie from fold tip to fold base, a purposeful variation in height and width with elevations 143 and tapers 144.
- the variation is such that when folded up folds 134 two surveys each 143 opposite to opposite fold edge surfaces 120b and in the circumferential direction successive folds 134 each pair of elevations 143 in a fold 134 in the radial direction offset from the elevations 143 of the adjacent folds 134 are arranged.
- a fold 134 near the radially outer fold edge 126 there are two ridges 143 followed by ridges 144 in the direction of the ridge, each occupying about half of the length of the ridge 142, while the next fold 134 from fold edge 126 to fold edge 126 are two opposed ones has elongated elevations 143, the maximum lie approximately in the middle between the fold edges 126.
- a protrusion 143 corresponds to a narrow portion of the bead 142 and a taper 144 to a widened portion of the bead 142, as seen in plan view in FIG. Figure 3 shows a plan view of a filter medium 1 14 according to an embodiment of the invention.
- the flat filter medium 1 14 has folded edges 126 at regular intervals, which may be formed by stampings of the filter medium 1 14. Parallel to this, parallel beads 142 run.
- the beads 142 can be formed, for example, by applying a hotmelt adhesive.
- the beads 142 have wide areas and narrow areas along their longitudinal extent.
- the narrow areas correspond to the elevations 143 and the wide areas correspond to the tapers 144 from FIG. 2.
- the tapers 144 can be made particularly flat.
- the elevations 143 and tapers 144 can advantageously be formed as embossings when embossing the fold edges 126, since the beads 142 were applied before the embossing of the filter medium 14.
- FIG. 4 schematically shows a plan view of a section of an advantageous embossing roll 1 60 for purposefully influencing the height to width ratio of beads 142 (FIG. 3, FIG. 4), in particular of glue or plastic beads.
- the embossing roll 1 60 along its circumference 1 62, the embossing roll 1 60 at regular intervals alternately projections 1 64 and depressions 1 66 on.
- the distance between adjacent projections 164 and recesses 166 corresponds to the distance between successive fold edges 126 (FIG. 3, FIG. 4).
- the circumference 1 62 of the embossing roll 1 60 between the projections 164 and recesses 166 is milled off, so that regions 170 are formed which are shorter in the radial direction than if the embossing roll 1 60 apart from the projections 164 and recesses 166 to have a cylindrical shape.
- the embossing roll 1 60 faces a cylindrical embossing roll (not shown) with corresponding protrusions and depressions with a constant calendering distance, the filter bellows 12 (FIG. 2) running between these embossing rolls.
- the regions 170 have a variable distance to the circumference of the opposite embossing roller.
- beads 142 are applied to the filter bellows 12 (FIG. 2), they are flattened to different degrees by the variable spacing of the regions 170 with respect to the opposing embossing roll.
- a protuberance 143 corresponds to the maximum distance between the region 170 (in Figure, for example, in the center of the region 170) from the opposed embossing roll.
- the elevation 143 is pressed little or not at all.
- corresponding sequences of elevations 143 and tapers 144 of the beads 142 result (FIG. 3, FIG. 4).
- Circumferentially successive regions 170 can be configured along the surface of the embossing roll 1 60 in such a way that the height and width of the beads 142 are set in a defined manner.
- FIG. 5 shows a schematic representation of a system 1 100 for producing a filter element 110 according to an exemplary embodiment of the invention.
- the method for producing a filter element 110 according to the invention comprises the following manufacturing steps of a filter bellows 1 12: unwinding of the filter medium 1 14 from a roll, storage of the filter medium 1 14 in a goods storage 1 104, application of beads 142 on the filter medium 1 14 before or after embossing to form folding edges 134, pressing the beads 142, placing the folded edges 134 to a zigzag folded filter bag 1 12.
- Such a process can be favorably in the usual manufacturing process in the production of Integrate filter bellows 1 12, in which the filter medium 1 14 usually runs in long lanes through a stamping unit 1 1 10.
- additional adhesive application stations 1 106 can be provided, which apply the hotmelt adhesive at the same speed, so that the normal production process is not hindered.
- the application of the beads 142 may be provided in particular before an embossing process with a constant amount of material. If the beads 142 are applied before embossing, they can be provided with desired tapers 144 at the intersection points with the folded edges 126 during the embossing process, in order to favor the setting up of the folded edges 126, in particular tapering, folds 134.
- the beads 142 can be advantageously pressed onto the filter medium 1 14 after application to the filter medium 1 14 in order to achieve a good and lasting adhesion. This can be favorably effected, for example, by a rolling process.
- the method of making a filter element 110 may include 10 further manufacturing steps of a filter bag 12, such as heating the filter medium in preparation for embossing, embossing fold edges 126 into the filter medium 14, with simultaneous pressing of the beads 142 having different heights and widths of the beads 142.
- the embossing of folding edges 126 in the filter medium 1 14 can be made low by preheating the filter medium 1 14, since the embossed fold edges 126 remain so durable.
- the plant 1 100 for the production of a filter element 1 10 in Figure 5 comprises the following units for producing a filter bellows 1 12: an unwinder 1 102, a goods store 1 104, a polymer application station 1 106 for applying the beads 142, a pressure roller 1 107 to Pressing of the beads 142 to the filter medium 1 14, a flow heater 1 108, an embossing unit 1 1 10, and a Faltenaufstellaggregat 1 1 12.
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- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Materials (AREA)
Abstract
Description
Claims
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE112016002242.5T DE112016002242A5 (de) | 2015-05-19 | 2016-05-11 | Filterelement mit Filterbalg |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102015006355.3A DE102015006355A1 (de) | 2015-05-19 | 2015-05-19 | Filterelement mit Filterbalg |
DE102015006355.3 | 2015-05-19 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2016184739A1 true WO2016184739A1 (de) | 2016-11-24 |
Family
ID=55967267
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2016/060505 WO2016184739A1 (de) | 2015-05-19 | 2016-05-11 | Filterelement mit filterbalg |
Country Status (2)
Country | Link |
---|---|
DE (2) | DE102015006355A1 (de) |
WO (1) | WO2016184739A1 (de) |
Families Citing this family (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2024102211A1 (en) | 2022-11-09 | 2024-05-16 | Baldwin Filters, Inc. | Variable filter media thickness for improved flow and filter performance |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999028012A1 (de) * | 1997-12-03 | 1999-06-10 | 'jacobi' Systemtechnik Gmbh | Filterelement sowie verfahren und klebstoff-auftragvorrichtung zu dessen herstellung |
JP2007098233A (ja) * | 2005-09-30 | 2007-04-19 | Nippon Muki Co Ltd | ジグザグ状エアフィルタ用濾材およびエアフィルタ |
DE102012005532A1 (de) * | 2012-03-21 | 2013-09-26 | Mann + Hummel Gmbh | Filterelement eines Filters zur Filtrierung von Fluiden und Filter |
WO2015082584A1 (de) * | 2013-12-05 | 2015-06-11 | Mann+Hummel Gmbh | Filterelement mit filterbalg |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US5252207A (en) | 1988-06-15 | 1993-10-12 | Pall Corporation | Wrap member having openings |
DE4345122A1 (de) * | 1993-12-30 | 1995-07-06 | Detroit Holding Ltd | Verfahren zur Herstellung eines Filtereinsatzes |
DE19755466A1 (de) * | 1997-12-03 | 1999-06-10 | Jacobi Systemtechnik Gmbh | Filterelement |
US6165241A (en) * | 1999-03-27 | 2000-12-26 | Aaf International, Inc. | Pleated filter media with strip spacers and method of making |
US7097684B2 (en) * | 2002-12-12 | 2006-08-29 | Aaf-Mcquay, Inc. | Method of forming combined pleated scrim and filter media materials and product of same |
JP5466853B2 (ja) * | 2008-12-25 | 2014-04-09 | 日本無機株式会社 | プリーツ型エアフィルタパック及びそれを用いたエアフィルタ |
-
2015
- 2015-05-19 DE DE102015006355.3A patent/DE102015006355A1/de not_active Withdrawn
-
2016
- 2016-05-11 WO PCT/EP2016/060505 patent/WO2016184739A1/de active Application Filing
- 2016-05-11 DE DE112016002242.5T patent/DE112016002242A5/de not_active Ceased
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1999028012A1 (de) * | 1997-12-03 | 1999-06-10 | 'jacobi' Systemtechnik Gmbh | Filterelement sowie verfahren und klebstoff-auftragvorrichtung zu dessen herstellung |
JP2007098233A (ja) * | 2005-09-30 | 2007-04-19 | Nippon Muki Co Ltd | ジグザグ状エアフィルタ用濾材およびエアフィルタ |
DE102012005532A1 (de) * | 2012-03-21 | 2013-09-26 | Mann + Hummel Gmbh | Filterelement eines Filters zur Filtrierung von Fluiden und Filter |
WO2015082584A1 (de) * | 2013-12-05 | 2015-06-11 | Mann+Hummel Gmbh | Filterelement mit filterbalg |
Also Published As
Publication number | Publication date |
---|---|
DE112016002242A5 (de) | 2018-02-08 |
DE102015006355A1 (de) | 2016-11-24 |
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