EP4469178A1 - Filterelement mit zickzackförmig gefaltetem filtermedium und filtersystem - Google Patents
Filterelement mit zickzackförmig gefaltetem filtermedium und filtersystemInfo
- Publication number
- EP4469178A1 EP4469178A1 EP22812468.1A EP22812468A EP4469178A1 EP 4469178 A1 EP4469178 A1 EP 4469178A1 EP 22812468 A EP22812468 A EP 22812468A EP 4469178 A1 EP4469178 A1 EP 4469178A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- filter
- seal
- filter element
- filter body
- sleeve
- 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.)
- Pending
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
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- B01D46/0002—Casings; Housings; Frame constructions
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/02—Non-permanent measures for connecting different parts of the filter
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2265/06—Details of supporting structures for filtering material, e.g. cores
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
- B01D2271/02—Gaskets, sealings
Definitions
- the invention relates to a filter element for a filter system for filtering a fluid, in particular air, with a filter body with a filter medium folded in a zigzag shape, and a filter system for filtering a fluid, in particular air, with a replaceable filter element.
- the intake air of internal combustion engines is usually routed through an air filter with a filter housing and a filter element arranged therein in order to separate dirt particles contained in the intake air from the intake air.
- an air filter is known, for example, from DE 102 31 696 A1.
- the filter element has the shape of a flat parallelepiped and comprises a filter medium made of paper or non-woven filter material which is folded in a zigzag shape. The folds on one side of the filter medium delimit a main filter surface for the unfiltered air side of the filter element and the folds lying in the parallel plane on the opposite side of the filter element delimit the filter surface for the clean air side.
- front edge bonding which can be implemented, for example, by applying a bead of hot-melt adhesive to the filter medium, spray bonding, PUR foam application or so-called sideband bonding.
- DE 10 2016 217 458 A1 discloses a trapezoidal or triangular air filter insert with a filter material folded in a zigzag shape, which does not have parallel side edges but tapers in one direction.
- sealing traces of adhesive run orthogonally to the folding axes and offset from one another in the axial direction. Adjacent traces of adhesive do not bond common folds but may terminate at a convex fold apex of adjacent folds.
- US 2018/0207566 A1 describes a filter with a filter medium that is folded too deeply, it being possible for the folds to be held at a distance from one another by beads of adhesive. Radial outer sides lying opposite one another can be sealed by a circumferential bead of adhesive which follows a curved profile of the outer sides.
- An object of the invention is to provide a robust and cost-effective filter element for a filter system. Another object is to provide a filter system with such a robust and cost-effective filter element.
- a filter element for a filter system for filtering a fluid, in particular air with a filter body with a filter medium folded in a zigzag shape through which the fluid flows in a flow direction when used as intended, with at least one clean-side
- the end face of the filter body is surrounded all around by a frame element with a seal in a circumferential direction, the frame element having a circumferential ring structure which is connected via a connection structure to a lattice structure which is arranged on the end face of the filter body, and which connection structure is at least partially integrated into the Seal is embedded, wherein the connection structure has radially extending openings for interlocking the seal with the frame member.
- a filter element for a filter system for filtering a fluid in particular air
- a filter body with a filter medium folded in a zigzag shape through which the fluid flows in a flow direction when used as intended, with at least one clean-side end face of the Filter body is surrounded circumferentially by a frame member with a seal in a circumferential direction.
- the frame element has a peripheral ring structure which is connected via a connection structure to an inner ring structure which is arranged on the front side of the filter body and which connection structure is at least partially embedded in the seal.
- the connecting structure has radial openings for interlocking the seal with the frame element. This involves a large number of openings, which are preferably distributed uniformly over the circumference of the frame element.
- the frame element can be designed as a one-piece plastic component, which protects and stabilizes the filter body on the outflow side.
- the circumferential ring structure dips radially into the seal, which can preferably be designed as a polyurethane (PUR) seal, in order to absorb the radial forces of the seal and to increase the sealing force.
- PUR polyurethane
- a firm mechanical interlocking between the frame element and the seal can be achieved via the openings.
- inexpensive polypropylene (PP) can be used as the material for the frame element, which, in contrast to the more expensive polyamide (PA) material, does not bond chemically to the PUR seal.
- a lattice structure can be connected to the frame element, which is arranged on the end face of the filter body and mechanically supports and stabilizes the filter body on the outflow side.
- the frame element is connected to a sleeve which protects the filter body on its radial lateral surface.
- additional elements such as guide elements and/or handle elements for guiding the filter element during installation in a filter housing and/or for holding the filter element during installation or removal from a filter housing can be arranged on the frame element. These additional elements can be used advantageously for maintenance tasks.
- the functions such as protecting the filter body on the outflow side, absorbing the forces of the radial seal, protecting the radial lateral surface and structures for guiding, holding and gripping during maintenance can be advantageously combined in one plastic component.
- By integrating the functions in one component significant cost savings can be achieved in the manufacture of the filter element.
- the circumferential ring structure can be embedded in the seal at least in the radial direction.
- the ring structure can advantageously absorb radial supporting forces of the seal.
- the seal can be connected to folds of the filter body.
- the seal can be foamed onto folds of the filter body. In this way, the seal can be permanently and reliably connected to the folds of the filter body. In addition, it can be ensured that the folds are also reliably sealed at the outer edges or in areas where the folds can be trimmed.
- the frame element can have a lattice structure which is connected to the ring structure and which completely covers the clean-side end face.
- the lattice structure can be formed in one piece with the ring structure. The lattice structure advantageously supports and stabilizes the end face of the filter body against the pressure of the flowing fluid.
- the frame element is connected to a sleeve which at least partially surrounds a lateral surface of the filter body in the axial direction and/or in the circumferential direction.
- the sensitive filter medium can be protected mechanically.
- folds that are open in the direction of the lateral surface can be sealed by the shell.
- the sleeve can have at least one maximum height in an axial direction, which corresponds to 30%, 50% or 70%, preferably 80%, very particularly preferably 90% of a height of the lateral surface.
- the lateral surface of the filter body can be adequately mechanically protected against damage.
- the sleeve can be continuously connected to the ring structure in the circumferential direction.
- the ring structure can merge seamlessly into the shell. Sufficient interlocking of the seal with the frame element is nevertheless possible via openings.
- the sleeve can have at least one guide element to support positioning in a filter housing.
- the guide element can be arranged on the casing in a radially outward direction.
- a suitable guide for reliably positioning the filter element in a filter housing can be achieved via the guide element.
- the guide element can be designed, for example, in the form of a round pin or also in the form of an increasing incline.
- the sleeve can have at least one gripping element, the gripping element being arranged on the sleeve in a radially outward direction. The grip element can advantageously be used to securely grip the filter element when it is installed in a filter housing or when it is removed from the filter housing.
- the sleeve can have a constant height all around, for example, or alternatively a different height all around in sections, with the height preferably being selected in sections so that, for example, guide element(s) and/or grip element(s) are on the Shell can be arranged.
- the frame element can be designed in one piece with a lattice structure and/or casing and/or guide element and/or handle element.
- the one-piece construction means that the frame element with the additional elements can be produced in a particularly cost-effective manner.
- the ring structure and the connection structure of the frame element (possibly also the lattice structure) and the shell are in one piece and consist of a plastic material, in particular a hard plastic material, so that the aforementioned device components in particular in a common process step, in particular by Injection molding can be produced.
- a raw-side end face of the filter body can be surrounded by a border in the circumferential direction.
- the filter body On the unfiltered side, the filter body can be surrounded by a peripheral border.
- the border can serve to seal and stabilize or protect the filter body on the raw side.
- the raw side skirt is preferably spaced axially from the casing, if present.
- the filter body can have an oval, round or rectangular cross-section on at least part of its cross-sectional area.
- the filter body can be oval with two parallel sides.
- other shapes can also be advantageously implemented.
- the seal can be designed with steps parallel to the clean-side end face in the radial direction inwards.
- steps for example, edge areas of the folds of the folded filter body can also be reliably sealed.
- a filter system for filtering a fluid, in particular air, with a replaceable filter element and a filter housing with a fluid inlet and a fluid outlet is proposed, wherein the filter element has a filter body with a filter medium folded in a zigzag shape, which when used as intended in a flow direction is flowed through by the fluid.
- At least one clean-side end face of the filter body is surrounded by a frame element with a seal in a peripheral direction.
- the frame element has a circumferential ring structure which is connected via a connection structure to a lattice structure which is arranged on the end face of the filter body and which connection structure is at least partially embedded in the seal.
- the connection structure has radial openings for interlocking the seal with the frame element.
- a filter element which has a frame element can advantageously be used in the proposed filter system.
- the frame element can be designed as a one-piece plastic component, which protects and stabilizes the filter body on the outflow side.
- the ring structure dips radially into the seal, which can preferably be designed as a polyurethane (PUR) seal, in order to absorb the radial forces of the seal and to increase the sealing force.
- PUR polyurethane
- a firm mechanical interlocking between the frame element and the seal can be achieved via the openings.
- inexpensive polypropylene (PP) can be used as the material for the frame element, which, in contrast to the more expensive polyamide (PA) material, does not bond chemically to the PUR seal.
- the lattice structure to which the frame element is connected, stabilizes the filter body on the outflow side and supports it mechanically.
- the frame element is connected to a sleeve which protects the filter body on its radial lateral surface.
- additional elements such as guide elements and/or handle elements for guiding the filter element during installation in a filter housing and/or for holding the filter element during installation or removal from a filter housing can be arranged on the frame element. These additional elements can be used advantageously for maintenance tasks.
- FIG. 1 shows a partially sectioned isometric view of a filter element according to an embodiment of the invention with sections A and B marked;
- FIG. 2 shows an enlarged representation of section A of the filter element according to FIG. 1 ;
- FIG. 3 shows an enlarged representation of section B of the filter element according to FIG. 1 ;
- FIG. 4 is an isometric view of the filter element of FIG. 1 in a different section, with sections C and D marked;
- FIG. 5 shows an enlarged view of section C of the filter element according to FIG. 4;
- FIG. 6 shows an enlarged representation of section D of the filter element according to FIG. 4;
- FIG. 7 shows the isometric view of the filter element according to FIG. 4 without a seal
- Figure 8 is an isometric view of the frame member and envelope of the filter element
- FIG. 9 shows a section of the frame element according to FIG. 8.
- FIG. 11 shows an isometric view of a filter system with a mounted filter element according to one
- Embodiment of the invention in a longitudinal section.
- FIG. 1 shows a partially sectioned isometric view of a filter element 10 according to an exemplary embodiment of the invention with sections A and B marked.
- FIG. 2 shows an enlarged view of section A
- FIG. 3 shows an enlarged view of section B.
- FIG. 4 shows a different isometric view of the filter element 10 according to FIG. 1 with sections C and D marked.
- FIG. 5 shows an enlarged view of section C
- FIG. 6 shows an enlarged view of section D.
- FIG. 7 shows the isometric view of the filter element 10 without the seal 26, while FIG. 8 shows an isometric view of the frame element 20 with the sleeve 42 of the filter element 10.
- Figure 9 shows a section of the frame element according to Figure 8.
- the filter element 10 for filtering a fluid has a filter body 12 with a zigzag folded filter medium 14 through which the fluid flows in a flow direction 50 (shown as an arrow) when used as intended.
- a flow direction 50 shown as an arrow
- At least one clean-side end face 16 of the filter body 12 is surrounded in a peripheral direction 52 by a frame element 20 with a seal 26 .
- the frame element 20 has a circumferential ring structure 22 which is connected via a connecting structure 32, for example via posts 36 and bridges 34, to a lattice structure 40 which is arranged on the clean-side end face 16 of the filter body 12 (see Figure 7).
- the connecting structure 32 is at least partially embedded in the seal 26, in particular at least in the radial direction.
- the connecting structure 32 has openings 38 that run radially for interlocking the seal 26 with the frame element 20 .
- the circumferential ring structure 22 is arranged axially behind the outflow-side end face in the direction of flow and is axially spaced from it. Furthermore, the circumferential ring structure 22 is offset radially inwards relative to the outer lateral surface 44 of the filter medium 14, i.e. the circumferential ring structure 22 has a smaller circumference than the lateral surface 44.
- the seal 26, which is preferably formed from PUR, is connected to folds 60 of the filter body 12, in particular foamed onto folds 60 of the filter body 12.
- the frame element 20 thus has a lattice structure 40 which is connected to the ring structure 22 and which covers the end face 16 on the clean side.
- the lattice structure 40 can in particular be formed in one piece with the ring structure 22 .
- the lattice structure 40 advantageously supports and stabilizes the end face 16 of the filter body 12 against the pressure of the flowing fluid.
- the frame element 20 is also connected to a sleeve 42 which at least partially surrounds a lateral surface 44 of the filter body 12 in the axial direction L and in the circumferential direction 52 .
- the sleeve 42 can have at least one maximum height 54, in particular in an axial direction L, which corresponds to 30%, 50% or 70%, preferably 80%, very particularly preferably 90% of a height 56 of the lateral surface 44.
- the sleeve 42 has at least one handle element 48 which is arranged on the sleeve 42 in a radially outward direction. With the handle element 48, the filter element 10 can be conveniently inserted into or removed from a filter housing.
- the sleeve 42 can, for example, have a constant height 54 all around, or alternatively a different height 54 (not shown in the figures) in sections, with the height 54 preferably being selected in sections such that, for example, guide element(s) 46 and/or Grip element(s) 48 on which can be connected in the axial direction L with respect to their selected axial position.
- a height 54 of at least 70% of the lateral surface 44 can be selected, for example in sections, for example in the area in which the gripping element 48 is arranged on the sleeve 42 .
- a front side 18 of the filter body 12 on the raw side is surrounded by a border 80 in the circumferential direction 52 .
- the border 80 can serve to seal and stabilize or protect the filter body 12 on the raw side.
- the seal 26 is formed with steps 62 parallel to the clean-side end face 16 in the radial direction inwards.
- the steps 62 are realized, for example, via an inner ring structure 24 that is additionally connected to the frame element 20 .
- the inner ring structure 24 defines the stepped areas 62 for foaming the PUR seal 26 .
- edge regions of the folds 60 of the folded filter body 12 can also be reliably sealed.
- the steps 62 are arranged in particular in the rounded areas of the oval filter body 12 on the inner ring structure 24 and thus reliably seal off cut areas 64 (see FIG. 10) of the filter body 12 .
- the annular structure 22 embedded in the seal 26 can be seen in the enlarged representation of section A in FIG.
- a cut inner ring structure 24 can be seen on the filter body 12 .
- An opening 38 is formed between the ring structure 22 and the inner ring structure 24, through which the PUR seal 26 can reach.
- the shell enters axially from below 42 into the seal 26.
- the inner ring structure 24 exits the seal 26 radially inward.
- the seal 26 has an axial sealing surface 30 and a radial sealing surface 28 for installation in a filter housing.
- the radial sealing surface 28 is supported by the counteracting force of the ring structure 22 when the filter element 10 is installed as intended.
- Sectioned areas of the lattice structure 40 can be seen in FIGS. 2 and 3, which support the folds 60 of the filter body 12 on the clean-side end face 16 .
- ring structure 22 merges directly via post 36 of connecting structure 32 into bridge 34 of connecting structure 32 , which is connected to inner ring structure 24 , and which in turn merges directly into shell 42 .
- the sleeve 42 can thus advantageously be continuously connected to the ring structure 22 in the circumferential direction 52 .
- Ring structure 22 is connected to inner ring structure 24 via bridges 34 and posts 36 of connecting structure 32 .
- FIG. 8 where the frame element 20 with lattice structure 40 and sleeve 42 is shown without the filter body 12, at least one guide element 46 on the sleeve 42 to support positioning in a filter housing 110 can be seen.
- the guide member 46 is on the shell 42 is arranged in a radially outward direction and has an ascending ramp shape.
- the guide element 46 can also be designed as a round pin, for example.
- the frame element 20 with the lattice structure 40 and/or the casing 42 and/or the guide element 46 and/or the grip element 48 can advantageously be designed in one piece. This enables the frame element 20 to be produced inexpensively with additional elements.
- FIG. 9 shows a section of the frame element according to FIG. 8 in an enlarged representation.
- the connection of the peripheral ring structure 22 via the posts 36 and bridges 34 to the shell 42 or to the inner ring structure 24 and the lattice structure 40 can thus be seen more clearly.
- FIG. 10 shows an isometric representation of the filter body 12 of the filter element 10 according to FIG. 1.
- the filter body 12 has an oval cross section with two parallel side surfaces on at least part of its cross-sectional area.
- the rounded ends of the oval each have an additional trimmed side 64 .
- the filter body 12 can have a round or rectangular cross section or a cross section of a different design.
- FIG. 11 shows an isometric view of a filter system 100 with a mounted filter element 10 according to an exemplary embodiment of the invention in a longitudinal section.
- the filter system 100 for filtering a fluid, in particular air, has a filter housing 110 with a fluid inlet 102 and a fluid outlet 104 .
- the filter housing 110 is formed from a housing upper part 112 and a housing lower part 114, which are detachably and tightly connected to one another and accommodate the replaceable filter element 10 on the inside.
- the filter element 10 has a filter body 12 with a filter medium 14 folded in a zigzag shape, through which the fluid flows in a flow direction 50 when used as intended.
- the flow direction 50 is marked with arrows.
- the inserted filter element 10 rests on the housing wall of the filter housing 110 via the radial sealing surface 28 of the seal 26 and with the axial sealing surface 30 on the shoulder of the filter housing 110 .
- the ring structure 22 of the frame element 20 supports the seal 26 in particular in the radial direction.
- a corresponding receptacle 120 is provided in the filter housing 110 for the handle element 48 arranged on the sleeve 42 .
- the filter element 10 can preferably be removed from the filter housing 110 laterally, ie transversely to the direction of flow 50 .
Landscapes
- Chemical & Material Sciences (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Claims
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102022102013.4A DE102022102013A1 (de) | 2022-01-28 | 2022-01-28 | Filterelement mit zickzackförmig gefaltetem Filtermedium und Filtersystem |
| PCT/EP2022/079730 WO2023143762A1 (de) | 2022-01-28 | 2022-10-25 | Filterelement mit zickzackförmig gefaltetem filtermedium und filtersystem |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| EP4469178A1 true EP4469178A1 (de) | 2024-12-04 |
Family
ID=84362621
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP22812468.1A Pending EP4469178A1 (de) | 2022-01-28 | 2022-10-25 | Filterelement mit zickzackförmig gefaltetem filtermedium und filtersystem |
Country Status (5)
| Country | Link |
|---|---|
| US (1) | US20240367080A1 (de) |
| EP (1) | EP4469178A1 (de) |
| CN (1) | CN118613315A (de) |
| DE (1) | DE102022102013A1 (de) |
| WO (1) | WO2023143762A1 (de) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP3363521B1 (de) * | 2015-04-10 | 2022-06-29 | MANN+HUMMEL GmbH | Filterelement und filteranordnung |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB9202781D0 (en) * | 1992-02-11 | 1992-03-25 | Btr Plc | Improvements in and relating to filters |
| US6852141B2 (en) * | 2001-06-06 | 2005-02-08 | Donaldson Company, Inc. | Filter element having center piece and methods |
| DE10231696A1 (de) | 2002-07-13 | 2004-01-22 | B & S Industrieservice Gmbh | Filtereinsatz mit einer zu einem Faltenbalg gefalteten Filtermatte |
| US9776118B2 (en) | 2014-08-25 | 2017-10-03 | Mann+Hummel Gmbh | Filter element and housing with cooperating filter media support structures |
| DE102016217458A1 (de) | 2016-09-13 | 2018-03-15 | Röchling Automotive SE & Co. KG | Plissierter Gasfiltereinsatz für ein Kraftfahrzeug mit diskontinuierlich verklebten Filtermaterialschenkeln sowie Verfahren und Vorrichtung zu dessen Herstellung |
| US11117079B2 (en) | 2017-01-20 | 2021-09-14 | Champion Laboratories, Inc. | Filter packs, processes for making filter packs, and air filters comprising filter packs |
| IT201800007854A1 (it) * | 2018-08-03 | 2020-02-03 | Officine Metallurgiche G Cornaglia Spa | Cartuccia filtro aria a pannello per motori endotermici |
| CN113329804B (zh) * | 2018-11-29 | 2023-01-17 | 康明斯滤清系统知识产权公司 | 改进的分层过滤器框架 |
-
2022
- 2022-01-28 DE DE102022102013.4A patent/DE102022102013A1/de active Pending
- 2022-10-25 WO PCT/EP2022/079730 patent/WO2023143762A1/de not_active Ceased
- 2022-10-25 CN CN202280090245.0A patent/CN118613315A/zh active Pending
- 2022-10-25 EP EP22812468.1A patent/EP4469178A1/de active Pending
-
2024
- 2024-07-17 US US18/775,080 patent/US20240367080A1/en active Pending
Also Published As
| Publication number | Publication date |
|---|---|
| CN118613315A (zh) | 2024-09-06 |
| WO2023143762A1 (de) | 2023-08-03 |
| US20240367080A1 (en) | 2024-11-07 |
| DE102022102013A1 (de) | 2023-08-03 |
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