WO2024251738A1 - Système filtrant doté d'au moins deux éléments filtrants, élément filtrant et utilisation - Google Patents

Système filtrant doté d'au moins deux éléments filtrants, élément filtrant et utilisation Download PDF

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Publication number
WO2024251738A1
WO2024251738A1 PCT/EP2024/065344 EP2024065344W WO2024251738A1 WO 2024251738 A1 WO2024251738 A1 WO 2024251738A1 EP 2024065344 W EP2024065344 W EP 2024065344W WO 2024251738 A1 WO2024251738 A1 WO 2024251738A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
sealing surface
housing
seal
filter element
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
Application number
PCT/EP2024/065344
Other languages
German (de)
English (en)
Inventor
Daniel Schmid
Thilo Müller
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel 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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Priority to DE112024002437.8T priority Critical patent/DE112024002437A5/de
Publication of WO2024251738A1 publication Critical patent/WO2024251738A1/fr
Anticipated expiration legal-status Critical
Pending legal-status Critical Current

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
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • 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
    • B01D46/0005—Mounting of filtering elements within casings, housings or frames
    • 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
    • B01D46/12—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces in multiple arrangements
    • 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
    • B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02—Gaskets, sealings
    • B01D2271/022—Axial sealings

Definitions

  • Filter system with at least two filter elements, filter element and use
  • the invention relates to a filter system with at least two replaceable filter elements for filtering a fluid, in particular for filtering air, and a filter element for filtering a fluid, in particular air, for such a filter system. Furthermore, an advantageous use is specified.
  • Fuel cell systems often require a particle filter and an adsorption filter to filter both particles and harmful gases from the intake air.
  • the filter bodies often have different service lives, which makes it sensible to separate the two filter bodies or filter elements so that the filter elements can be changed separately. This saves maintenance costs.
  • An object of the invention is to provide a service-friendly and cost-effective filter system with at least two replaceable filter elements for filtering a fluid, in particular for filtering air.
  • a further object is to provide a filter element for such a service-friendly and cost-effective filter system.
  • a filter system with a filter housing with a fluid inlet and a fluid outlet, and with at least two replaceable filter elements for filtering a fluid, in particular for filtering air, which are arranged between the fluid inlet and the fluid outlet, wherein the filter elements each have a filter body with a filter medium which, when used as intended, is arranged in a flow direction for the fluid to flow through, wherein the filter elements have, on oppositely arranged end faces, seals with sealing surfaces on outer edges which engage with one another when the filter elements are installed as intended in the filter housing.
  • a filter element for filtering a fluid, in particular air for a filter system with a filter body with a filter medium which, when used as intended, is arranged in a flow direction for the fluid to flow through, wherein the filter body has on one end face a seal running around an outer edge with a sealing surface which, when installed as intended in a filter housing of the filter system, comes into contact with a sealing surface which is formed on another seal with a complementary sealing surface of a second filter element arranged opposite one end face.
  • a filter system is proposed, with a filter housing with a fluid inlet and a fluid outlet, and with at least two replaceable filter elements for filtering a fluid, in particular for filtering air, which are arranged between the fluid inlet and the fluid outlet.
  • the filter elements each have a filter body with a filter medium, which, when used as intended, is arranged in a flow direction for the fluid to flow through.
  • the filter elements have circumferential seals with sealing surfaces on the outer edges of their opposite end faces, which interlock when the filter elements are installed correctly in the filter housing.
  • the two filter elements can be designed as flat filter elements with a foamed seal, for example, but other filter element shapes are also possible.
  • the seals of the two filter elements engage with each other.
  • the seals have sealing surfaces for the other seal.
  • the sealing surface of the seal of one filter element serves to seal the seal of the other filter element.
  • the sealing surface of the seal of one filter element can, for example, be designed with a concave curvature, while the sealing surface of the seal of the other filter element can be designed with a convex curvature.
  • the seals are pressed by the filter housing or a housing part of the filter housing. This ensures a high level of tightness between the two filter elements.
  • the alignment of the sealing surfaces can be axial, so that the seals can be pressed axially.
  • the maintenance of the particle filter element and the adsorption filter element of a fuel cell system can be carried out separately. Maintenance costs can thus be reduced in a cost-effective manner. Because the respective seals of the two filter elements are pressed together, no sealing can be achieved in the housing if one of the filter elements is missing. This ensures that the filter system can only be operated if both filter elements are installed correctly.
  • the sealing surfaces can be designed to be complementary in their cross-section.
  • the sealing surface of one of the filter elements can be concavely curved in its cross-section at least in some areas, while the sealing surface of the other of the filter elements can be convexly curved in a complementary cross-section at least in some areas. Both seals can thus lie directly against one another at the respective sealing surfaces, so that a flow path through the two filter elements is sealed to the outside.
  • the respective seal on the filter body can be in a radial direction, i.e. the sealing surface is directed radially inwards or outwards.
  • the respective seal on the filter body can be in an axial direction, i.e. the sealing surface is directed axially upwards or downwards.
  • at least one of the seals can be foamed onto the respective filter body. If the seal on the filter body is in a radial direction, the effective area for the flow through the filter body is advantageously affected as little as possible by the seal. If the seal on the filter body is in an axial direction, a defined distance can be set between the two filter bodies.
  • the respective seal can advantageously be arranged at least largely radially outside the front side of the filter element that forms the inflow or outflow side, so that as little of the filter surface as possible is covered by the seal and the force during pressing acts directly on the seal and less on the filter medium.
  • the seals can advantageously be foamed directly onto the filter body.
  • Polyurethane (PUR) for example, can be used as a material.
  • the seals can be positioned against each other in a axial direction.
  • the seals can be pressed axially using the filter housing or using housing parts such as the lower and upper sections in order to achieve a favorable sealing effect.
  • the respective seal can have a circumferential receptacle opposite the sealing surface, into which a housing part engages.
  • This allows the filter element to be appropriately positioned with respect to the filter housing or a housing part, so that the filter element is aligned for installation in the filter housing.
  • the two filter elements can also be reliably positioned relative to one another, so that the seals of the two filter elements can engage with one another and come into contact with the sealing surfaces.
  • the housing part engaging in the receptacle of the seal allows the seals to be pressed in the axial direction when the filter housing is closed as intended, so that the sealing of the two filter elements with respect to one another is ensured.
  • the seals can be pressed against a housing wall in a radial direction when the filter housing is closed as intended.
  • the seals of the filter elements can be pressed against the inner housing wall, whereby the sealing of the filter elements against the filter housing can be achieved.
  • the filter element through which the air flows first in the direction of flow can be designed as a particle filter.
  • the filter element following in the direction of flow can be designed as an adsorption filter, in particular as an activated carbon filter and/or as an ion exchanger. In this way, particles and harmful gases can advantageously be filtered out of the intake air, for example in fuel cell systems.
  • the filter housing can be designed to encompass the seals on a radial outer side. This advantageously protects the seals from mechanical damage.
  • an interface for connecting the housing parts can advantageously be arranged on the seals, so that in this way the removal of a filter element from the housing part is made easier for maintenance.
  • a filter element for filtering a fluid, in particular air, for a filter system with a filter body with a filter medium which, when used as intended, is arranged in a flow direction through which the fluid can flow.
  • the filter body has on one end face a seal running around an outer edge with a sealing surface which, when installed as intended in a filter housing of the filter system, comes into contact with a sealing surface which is formed on another seal with a complementary sealing surface of a second filter element arranged opposite one end face.
  • the proposed filter element can be designed, for example, as a flat filter element with a foamed seal, but other filter element shapes are also possible.
  • the seal is designed so that its sealing surface can engage the sealing surface of a second filter element.
  • the sealing surface of the seal of the filter element can, for example, be designed with a concave curvature, while the sealing surface of the seal of the other filter element can be designed with a convex curvature. If both seals engage with each other, lateral displacement against each other can advantageously be prevented.
  • the seal On the side facing away from the convex or concave sealing surface, the seal can be pressed by the filter housing or a housing part of a filter housing. This ensures tightness with the other filter element.
  • the two sealing surfaces are designed to be axially opposite one another and the pressing takes place axially.
  • the axial direction runs parallel to the flow direction.
  • the maintenance of a particle filter element and an adsorption filter element of a fuel cell system can be carried out separately from one another. Maintenance costs can thus be reduced in a cost-effective manner.
  • the sealing surface can be designed in an axial direction in its cross section complementary to the sealing surface of the second filter element.
  • the sealing surface can be concavely curved at least in some areas in its cross section, while the sealing surface of the second filter element is convexly curved at least in some areas in a complementary manner.
  • the sealing surface of the filter element can be convexly curved at least in some areas in its cross section, while the sealing surface of the second filter element is concavely curved at least in some areas in a complementary manner. Both seals can thus lie directly against one another at the sealing surfaces, so that a flow path through the two filter elements is sealed to the outside.
  • a filter element designed for the absorption of harmful gases is surrounded on the front side by a circumferential seal which has a concave cross-section in the axial direction.
  • This element can be arranged in a filter housing in addition to a filter element for particle filtration with a convex sealing surface.
  • the filter medium can, for example, be in a folded form and advantageously comprise activated carbon.
  • the seal on the filter body can be in a radial direction, ie the sealing surface is directed radially inwards or outwards.
  • the seal on the filter body can be in an axial direction, ie the sealing surface is directed axially directed upwards or downwards.
  • the seal can be foamed onto the filter body. If the seal is in the radial direction on the filter body, the effective area for the flow through the filter body is advantageously affected as little as possible by the seal. If the seal is in the axial direction on the filter body, a defined distance can be set between the two filter bodies.
  • the seal can advantageously be arranged at least largely radially outside the front side of the filter element that forms the inflow or outflow side, so that as little filter surface as possible is covered by the seal and the force during pressing acts directly on the seal and less on the filter medium.
  • the seals can advantageously be foamed directly onto the filter body.
  • Polyurethane (PUR) for example, can be used as a material.
  • the seal can have a circumferential receptacle opposite the sealing surface, into which a housing part of the filter housing engages when properly installed in the filter housing.
  • This allows the filter element to be appropriately positioned with respect to the filter housing or a housing part so that the filter element is aligned for installation in the filter housing.
  • the two filter elements can also be reliably positioned relative to one another so that the seals of the two filter elements can engage with one another.
  • the housing part engaging in the receptacle of the seal allows the seals to be pressed in the axial direction when the filter housing is properly closed, so that the sealing of the two filter elements with respect to one another is ensured.
  • the filter element can be designed as a particle filter and/or as an adsorption filter, in particular as an activated carbon filter and/or as an ion exchanger.
  • particles and harmful gases can advantageously be filtered out of the intake air.
  • FIG. 1 is an isometric view of a filter system according to an embodiment of the invention.
  • FIG. 2 is an isometric exploded view of the filter system according to Figure 1;
  • FIG. 3 is an exploded view of the filter system according to Figure 1 in side view;
  • FIG. 4 is a plan view of the filter system according to Figure 1 with marked section plane B-B;
  • FIG. 5 is a sectional view of the section plane B-B according to Figure 4 with marked area C;
  • FIG. 6 is an enlarged view of section C of the filter system according to Figure 4.
  • Figure 1 shows an isometric view of a filter system 100 according to an embodiment of the invention.
  • Figure 2 shows an isometric exploded view of the filter system 100, while Figure 3 shows an exploded view of the filter system 100 in side view.
  • Figure 4 shows a plan view of the filter system 100 with marked section plane B-B, wherein Figure 5 shows the sectional view of the section plane B-B according to Figure 4 with marked area C and Figure 6 shows an enlarged view of the section C of the filter system according to Figure 5.
  • the filter system 100 has a filter housing 110 with an upper housing part 112 and a lower housing part 114, wherein a fluid inlet 102 is arranged on the lower housing part 114 and a fluid outlet 104 is arranged on the upper housing part 112.
  • the fluid to be filtered thus flows through the filter housing 110 from the lower housing part 114 to the upper housing part 112 in a flow direction 50.
  • the filter system 100 has two replaceable filter elements 10, 30 for filtering a fluid, in particular for filtering air, which are arranged between the fluid inlet 102 and the fluid outlet 104.
  • the filter elements 10, 30 each have a filter body 12, 32 with a filter medium 14, 34, which, when used as intended, is arranged in a flow direction 50 for the fluid to flow through.
  • the flow direction 50 runs in the axial direction 60 of the filter system 100.
  • the filter medium 14, 34 can be designed, for example, as a fleece or filter paper and can be folded, in particular folded in a zigzag shape, in the filter body 12, 32. In the figures, folds of the filter medium are only partially shown in the filter body 12, 32. Of course, the entire filter body 12, 32 is designed with the folded filter medium 14, 34. The folds run in each case between an inflow side and an outflow side.
  • the filter medium 14, 34 can be sealed at its front edges with a side band 48, as can be seen in the section in Figure 6.
  • the filter elements 10, 30 have seals 20, 40 with sealing surfaces 22, 42 on outer edges 18, 38 on oppositely arranged end faces 16, 36, which engage with one another when the filter elements 10, 30 are installed as intended in the filter housing 110.
  • the sealing surface 22 on the seal 20 of one filter element 10 serves to seal when the seal 40 of the other filter element 30 rests on the sealing surface 22.
  • the sealing surface 42 on the seal 40 of the other filter element 30 serves to seal when the seal 20 of one filter element 10 rests on the sealing surface 42.
  • the sealing surfaces 22, 42 are designed to be complementary in their cross-section.
  • the sealing surface 42 of the filter element 30 is concavely curved in its cross-section at least in some areas, while the sealing surface 22 of the other filter element 10 is convexly curved in a complementary cross-section at least in some areas.
  • the sealing surfaces 22, 42 are designed to be complementary in the axial direction 60, so that an axial seal is formed.
  • the seal 20, 40 has a first holding section that covers a front edge area and a second holding section that covers a side edge area of the filter body 12, 32 and is thus securely connected.
  • the sealing surfaces 22, 42 are arranged radially outside the filter body 12, 32.
  • the seals 20, 40 can expediently be foamed onto the respective filter body 12, 32.
  • Polyurethane (PUR) for example, can advantageously be used as the material.
  • the respective seal 20, 40 has a circumferential receptacle 24, 44 opposite the sealing surface 22, 42, into which a part of a housing part 112, 114 engages when the filter housing 110 is closed.
  • the one housing part 112 is, for example, an upper housing part and the other housing part 114 is, for example, a lower housing part.
  • the housing parts 112, 114 can each have a collar 120, 122 that extends the housing wall 116, 118 and that engages in the receptacle 24, 44 or is pressed into the receptacle 24, 44 when the filter housing 110 is closed as intended. In this way, the seals 20, 40 are pressed against one another in the axial direction 60 when the filter housing 110 is closed as intended.
  • the seals 20, 40 could optionally also be pressed against the housing wall 116 in the radial direction 70 when the filter housing 110 is closed as intended, whereby the sealing of the filter elements 10, 30 against the filter housing 110 can be achieved.
  • the sealing surfaces would be designed to engage one another in the radial direction, in particular to be complementary.
  • the filter element 10 through which the air flows first in the flow direction 50 can be designed as a particle filter, while the filter element 30 following in the flow direction 50 can be designed as an adsorption filter, in particular as an activated carbon filter and/or as an ion exchanger. In this way, for example in a fuel cell system, particles and harmful gases can advantageously be filtered out of the intake air.
  • the filter housing 110 surrounds the seals 20, 40 on the radial outer side 26, 46. This allows the seals 20, 40 to be advantageously protected from mechanical damage.
  • an interface 124 for connecting the housing parts 112, 114 can advantageously be arranged on the surround of the seals 20, 40, so that in this way removal of a filter element 10, 30 from the housing part 112, 114 is made easier during maintenance.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

L'invention concerne un système filtrant (100) doté d'un boîtier de filtre (110) avec une entrée de fluide (102) et une sortie de fluide (104), et au moins deux éléments filtrants échangeables (10, 30) pour filtrer un fluide, en particulier pour filtrer de l'air, qui sont placés entre l'entrée de fluide (102) et la sortie de fluide (104). Les éléments filtrants (10, 30) ont chacun un corps de filtre (12, 32) doté d'un milieu filtrant (14, 34) qui, lorsqu'il est utilisé tel que prévu, est placé dans une direction d'écoulement (50) par l'intermédiaire de laquelle le fluide peut s'écouler. Les éléments filtrants (10, 30) ont également des joints circonférentiels (20, 40) dotés de surfaces d'étanchéité (22, 42) sur les bords externes respectifs (18, 38) de côtés d'extrémité placés en opposition (16, 36), qui viennent en prise l'un avec l'autre lorsque les éléments filtrants (10, 30) sont assemblés comme prévu dans le boîtier de filtre (110). L'invention concerne également un élément filtrant (10, 30).
PCT/EP2024/065344 2023-06-06 2024-06-04 Système filtrant doté d'au moins deux éléments filtrants, élément filtrant et utilisation Pending WO2024251738A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE112024002437.8T DE112024002437A5 (de) 2023-06-06 2024-06-04 Filtersystem mit wenigstens zwei Filterelementen, Filterelement und Verwendung

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102023114795.1 2023-06-06
DE102023114795.1A DE102023114795A1 (de) 2023-06-06 2023-06-06 Filtersystem mit wenigstens zwei Filterelementen, Filterelement und Verwendung

Publications (1)

Publication Number Publication Date
WO2024251738A1 true WO2024251738A1 (fr) 2024-12-12

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ID=91431441

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2024/065344 Pending WO2024251738A1 (fr) 2023-06-06 2024-06-04 Système filtrant doté d'au moins deux éléments filtrants, élément filtrant et utilisation

Country Status (2)

Country Link
DE (2) DE102023114795A1 (fr)
WO (1) WO2024251738A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102023114795A1 (de) 2023-06-06 2024-12-12 Mann+Hummel Gmbh Filtersystem mit wenigstens zwei Filterelementen, Filterelement und Verwendung

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348077B1 (en) * 1999-11-19 2002-02-19 Solberg Manufacturing, Inc. Multiple stage air-intake filter apparatus
DE10347103A1 (de) * 2003-10-10 2005-06-09 Mann + Hummel Gmbh Filtersystem
DE102016004315A1 (de) * 2016-04-12 2017-10-12 Mann + Hummel Gmbh Filteranordnung
DE102016005007A1 (de) * 2016-04-25 2017-10-26 Nilfisk A/S Filterelement und Schmutzsauger mit Filteraufnahme für ein solches Filterelement
DE102023114795A1 (de) 2023-06-06 2024-12-12 Mann+Hummel Gmbh Filtersystem mit wenigstens zwei Filterelementen, Filterelement und Verwendung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
ITTO20131038A1 (it) * 2013-12-18 2015-06-19 Cornaglia G Off Met Spa Elemento filtrante multistrato e suo metodo di realizzazione
GB2575321A (en) * 2018-07-06 2020-01-08 Dyson Automotive Res And Development Limited Vehicle cabin filter assembly
DE102020131697A1 (de) * 2020-11-30 2022-06-02 Mann+Hummel Gmbh Filter, insbesondere Innenraumfilter eines Kraftfahrzeugs, Verwendung eines Filterelements in dem Filter, Filterelement und Kraftfahrzeug
DE102021128717A1 (de) * 2021-11-04 2023-05-04 Mann+Hummel Gmbh Rundfilterelement und Filtereinrichtung

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6348077B1 (en) * 1999-11-19 2002-02-19 Solberg Manufacturing, Inc. Multiple stage air-intake filter apparatus
DE10347103A1 (de) * 2003-10-10 2005-06-09 Mann + Hummel Gmbh Filtersystem
DE102016004315A1 (de) * 2016-04-12 2017-10-12 Mann + Hummel Gmbh Filteranordnung
DE102016005007A1 (de) * 2016-04-25 2017-10-26 Nilfisk A/S Filterelement und Schmutzsauger mit Filteraufnahme für ein solches Filterelement
DE102023114795A1 (de) 2023-06-06 2024-12-12 Mann+Hummel Gmbh Filtersystem mit wenigstens zwei Filterelementen, Filterelement und Verwendung

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DE102023114795A1 (de) 2024-12-12
DE112024002437A5 (de) 2026-03-19

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