WO1997000113A1 - Filter cartridge - Google Patents
Filter cartridge Download PDFInfo
- Publication number
- WO1997000113A1 WO1997000113A1 PCT/EP1996/002235 EP9602235W WO9700113A1 WO 1997000113 A1 WO1997000113 A1 WO 1997000113A1 EP 9602235 W EP9602235 W EP 9602235W WO 9700113 A1 WO9700113 A1 WO 9700113A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- filter
- end plate
- filter cartridge
- sealing
- sealing 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.)
- Ceased
Links
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
- F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
- F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
- F02M35/02—Air cleaners
- F02M35/024—Air cleaners using filters, e.g. moistened
-
- 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
- B01D46/24—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
- B01D46/2414—End caps including additional functions or special forms
-
- 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
-
- 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
- B01D2271/027—Radial sealings
Definitions
- the invention relates to a filter cartridge in particular for an intake air filter of an internal combustion engine according to the preamble of the main claim.
- a filter cartridge of this type is described in DE 88 05 049 Ul.
- such filter cartridges have the disadvantage that the outer edge of the support and sealing ring can detach from the filter paper web in cases of extreme stress, since there is only a non-positive connection there. There is then a direct connection between the unfiltered air inlet and the clean air outlet, the passage cross section of which is small, but which can nevertheless result in malfunctions or increased wear on the downstream internal combustion engine.
- DE-OS 27 38 086 shows a filter cartridge consisting of a filter material part and a flange part cast thereon from a pourable, hardened material e.g. There is plastic or rubber, which remains flexible after curing.
- the filter material is embedded in the flange material in the end area.
- a disadvantage of this known filter cartridge is that a casting mold is required for casting on the flange part, which results in a long cycle time and therefore low productivity in connection with the relatively slow curing.
- the invention has for its object to avoid the disadvantages mentioned and to create a filter cartridge that consists of a few parts or components and at the same time ensures a reliable seal between the raw air side and clean air side.
- the main advantage of the invention is the fact that the end plate, in which the sealing element is already integrated, is connected directly to the filter body, that is, the connection is made by melting the end plate and pressing it into the filter body. Due to the surface structure of the filter body or the zigzag-shaped pleated filter material, an intimate and reliable connection between the end plate and the filter body is achieved.
- the end plate consists of a mixture of polypropylene and elastomer, which is also known under the term Santoprene, or of a mixture of polyamide and elastomer.
- the advantage of this material is that it changes from rigid to pasty when heated and can thus be fused with the filter paper body.
- the material shows a soft elastic property that is suitable for the fact that the washer can also be used as a sealing element.
- the sealing element consists of a lip seal which, for example, has a plurality of sealing grooves.
- a kind of labyrinth seal can thereby be achieved.
- the arrangement of sealing grooves has the advantage that the elasticity behavior can be set exactly.
- the end plate is an injection molded part and can be produced in a design using the so-called 2-component process. This means that plastics with different properties are melted together in a single operation.
- the sealing element can consist of a plastic that has particularly good sealing properties.
- the element to be fused with the filter body can consist of a plastic which has particularly good adhesive properties.
- a further development of the invention provides for the sealing element to be arranged axially or radially. While the axial sealing of a filter cartridge represents the previously usual sealing, the radial sealing has the advantage that length tolerances of the filter cartridge can be compensated for more easily.
- FIG. 1 a half section of an air filter with a filter cartridge
- FIG. 1b shows a variant of an air filter with a filter cartridge
- FIG. 2 shows a sealing profile with a cavity
- Figure 3 shows a sealing profile with an open edge seal.
- the embodiment of the air filter consists of an air filter housing 10 which is closed with a cover 11.
- the filter housing has a raw air inlet 12 and a clean air outlet 13.
- Inside the filter housing there is a filter cartridge 14 which is provided with an end plate 15 at its upper end and with an end plate 16 at the lower end.
- the filter cartridge consists essentially of a zigzag folded filter paper 17. Both the end plate 15 and the End plate 16 consists in particular of Santoprene, a combination of polypropylene and an elastomeric material.
- sealing lips are formed on the lower end disk 16. These sealing lips 18 have sealing grooves 19, 20 which contribute to an increase in the sealing effect.
- the end disks are heated during assembly with the filter paper 17 and melted into the paper bellows and connected to it.
- FIG. 1b also shows sealing lips 21. These provide a radial seal on the attachment 22 of the clean air outlet 13. If the end plate 16 is produced, for example, in a two-component injection molding process, it is expedient to design the first component as an easily meltable flat plate and to provide the second component for the sealing area.
- FIG. 2 shows an air filter cartridge in which a sealing profile is arranged on the end plate 16, which brings about both a radial and an axial seal.
- This sealing profile is produced in the so-called gas internal pressure process, that is to say the cavity 23 of the profile seal is created during the injection molding process by blowing in gas. This results in a seal that can be adjusted in terms of elasticity to the requirements regarding the stability of the filter insert.
- Both TPE and polyamide are suitable as sealing or end plate material.
- Figure 3 shows a variant.
- the sealing profile is an open profile.
- the seal effects both a radial and an axial seal or a seal in the axial direction and a position stabilization of the filter cartridge 14 in the radial direction.
- both functions that is to say the sealing functions, the position stabilization are optimally fulfilled.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Geometry (AREA)
- Filtering Of Dispersed Particles In Gases (AREA)
Abstract
Description
Filterpatrone Filter cartridge
Die Erfindung betrifft eine Filterpatrone insbesondere für einen Ansaugluftfilter einer Brennkraftmaschine nach dem Oberbegriff des Hauptanspruchs.The invention relates to a filter cartridge in particular for an intake air filter of an internal combustion engine according to the preamble of the main claim.
Eine Filterpatrone dieser Art wird in dem DE 88 05 049 Ul beschrieben. Derartige Filterpatronen weisen jedoch den Nachteil auf, daß sich in Fällen extremer Beanspruchung der Außenrand des Stütz- und Dichtringes von der Filterpapierbahn lösen kann, da dort nur eine kraftschlüssige Verbindung vorhanden ist. Es kommt dann eine unmittelbare Verbindung zwischen dem Rohlufteinlaß und dem Reinluftauslaß zustande, deren Durchtrittsquerschnitt zwar klein ist, die aber dennoch Störungen oder erhöhten Verschleiß der nachgeordneten Brennkraftmaschine zur Folge haben kann.A filter cartridge of this type is described in DE 88 05 049 Ul. However, such filter cartridges have the disadvantage that the outer edge of the support and sealing ring can detach from the filter paper web in cases of extreme stress, since there is only a non-positive connection there. There is then a direct connection between the unfiltered air inlet and the clean air outlet, the passage cross section of which is small, but which can nevertheless result in malfunctions or increased wear on the downstream internal combustion engine.
Die DE-OS 27 38 086 zeigt eine Filterpatrone, die aus einem Filtermaterialteil und einem daran angegossenen Flanschteil aus einem gießfähigen, aushärteten Material z.B. Kunststoff oder Gummi besteht, welches nach dem Aushärten flexibel bleibt.DE-OS 27 38 086 shows a filter cartridge consisting of a filter material part and a flange part cast thereon from a pourable, hardened material e.g. There is plastic or rubber, which remains flexible after curing.
Das Filtermaterial ist im Endbereich in das Flanschmaterial eingebettet. Um hier eine sichere Verbindung zu schaffen wird vorgeschlagen, das Filtermaterial mit einer Lochung zu versehen, so daß beim Angießen des Flanschteils das flüssige Flanschmaterial durch die Löcher im Filtermaterial fließt und so eine Zapfenverbindung zwischen dem Filtermaterial und dem Flanschmaterial herstellt.The filter material is embedded in the flange material in the end area. In order to create a secure connection here, it is proposed to provide the filter material with a perforation, so that when the flange part is cast on, the liquid flange material flows through the holes in the filter material and thus produces a pin connection between the filter material and the flange material.
Als nachteilig wird bei dieser bekannten Filterpatrone angesehen, daß für das Angießen des Flanschteils eine Gießform benötigt wird, was im Zusammenhang mit der relativ langsamen Aushärung eine lange Taktzeit und damit eine geringe Produktivität ergibt.A disadvantage of this known filter cartridge is that a casting mold is required for casting on the flange part, which results in a long cycle time and therefore low productivity in connection with the relatively slow curing.
Ein weiterer Nachteil ist auch darin zu sehen, daß der Filterpapierkörper mit einer Lochung versehen werden muß, die in einem zusätzlichen Arbeitsgang eingebracht wird und außerdem bei nicht vollständigem Ausgießen zu einem Kurzschluß zwischen der Rohluftseite und der Reinluftseite führt.Another disadvantage is the fact that the filter paper body must be provided with a perforation, which is introduced in an additional operation and also leads to a short circuit between the raw air side and the clean air side when the pouring is not complete.
Es ist ferner aus der DE 38 38 540 eine Filterpatrone bekannt, die eine Endscheibe aus einem Dichtmaterial aufweist. Diese Endscheibe wird mittels eines speziellen Klebers mit dem Filterpapierkörper verbunden. Außerdem ist die Endscheibe derart gestaltet, daß eine Verzahnung zwischen Kleber und Endscheibe erfolgt. Damit zeigt sich jedoch auch schon der Nachteil der darin zu sehen ist, daß die Enscheibe ein kompliziertes und aufwendig herzustellendes Bauteil ist.It is also known from DE 38 38 540 a filter cartridge which has an end plate made of a sealing material. This end plate is attached with a special adhesive Filter paper body connected. In addition, the end plate is designed in such a way that the teeth and the end plate are interlocked. However, this also shows the disadvantage that it can be seen in the fact that the washer is a complicated and complex component to manufacture.
Der Erfindung liegt die Aufgabe zugrunde, die genannten Nachteile zu vermeiden und eine Filterpatrone zu schaffen, die aus wenigen Bauteilen bzw. Komponenten besteht und gleichzeitig eine zuverlässige Abdichtung zwischen Rohluftseite und Reinluftseite gewährleistet.The invention has for its object to avoid the disadvantages mentioned and to create a filter cartridge that consists of a few parts or components and at the same time ensures a reliable seal between the raw air side and clean air side.
Diese Aufgabe wird ausgehend von dem Oberbegriff des Hauptanspruchs durch dessen kennzeichnenden Merkmale gelöst.This object is achieved on the basis of the preamble of the main claim by its characterizing features.
Der wesentliche Vorteil der Erfindung ist darin zu sehen, daß die Endscheibe in welche bereits das Dichtelement integriert ist, unmittelbar mit dem Filterkörper verbunden wird, das heißt, die Verbindung erfolgt durch Aufschmelzen der Endscheibe und Einpressen in den Filterkörper. Aufgrund der Oberflächenstruktur des Filterkörpers bzw. des zick-zack-fbrmig gefalteten Filtermaterials wird eine innige und zuverlässige Verbindung zwischen Endscheibe und Filterkörper erzielt.The main advantage of the invention is the fact that the end plate, in which the sealing element is already integrated, is connected directly to the filter body, that is, the connection is made by melting the end plate and pressing it into the filter body. Due to the surface structure of the filter body or the zigzag-shaped pleated filter material, an intimate and reliable connection between the end plate and the filter body is achieved.
Gemäß einer Weiterbildung der Erfindung besteht die Endscheibe aus einer Mischung von Polypropylen und Elastomer, welche auch unter dem Begriff Santoprene bekannt ist oder aus einer Mischung von Polyamid und Elastomer.According to a development of the invention, the end plate consists of a mixture of polypropylene and elastomer, which is also known under the term Santoprene, or of a mixture of polyamide and elastomer.
Der Vorteil dieses Material liegt darin, daß es beim Erwärmen vom starren in den teigigen Zustand überwechselt und dadurch mit dem Filterpapierkörper verschmolzen werden kann.The advantage of this material is that it changes from rigid to pasty when heated and can thus be fused with the filter paper body.
Außerdem zeigt das Material aufgrund der geringen Shore-Härte eine weichelastische Eigenschaft die dazu geeignet ist, daß die Enscheibe gleichzeitig als Dichtelement angewandt werden kann.In addition, due to the low Shore hardness, the material shows a soft elastic property that is suitable for the fact that the washer can also be used as a sealing element.
In einer weiteren Ausgestaltung der Erfindung besteht das Dichtelement aus einer Lippendichtung, welche beispielsweise mehrere Dichtrillen aufweist. Dadurch ist eine Art Labyrinthdichtung erzielbar. Außerdem hat die Anordnung von Dichtrillen den Vorteil, daß das Elastizitätsverhalten exakt einstellbar ist. Die Endscheibe ist ein Spritzgußteil und kann in einer Gestaltung im sogenannten 2- Komponenten Verfahren hergestellt werden. Dies bedeutet, daß Kunststoffe unterschiedlicher Eigenschaften in einem einzigen Arbeitsgang miteinander verschmolzen werden. So kann beispielsweise das Dichtelement aus einem Kunststoff bestehen, der besonders gute Dichteigenschaften aufweist. Das mit dem Filterkörper zu verschmelzende Element kann aus einem Kunststoff bestehen, der besonders gute Klebeeigenschaften aufweist.In a further embodiment of the invention, the sealing element consists of a lip seal which, for example, has a plurality of sealing grooves. A kind of labyrinth seal can thereby be achieved. In addition, the arrangement of sealing grooves has the advantage that the elasticity behavior can be set exactly. The end plate is an injection molded part and can be produced in a design using the so-called 2-component process. This means that plastics with different properties are melted together in a single operation. For example, the sealing element can consist of a plastic that has particularly good sealing properties. The element to be fused with the filter body can consist of a plastic which has particularly good adhesive properties.
Eine Weiterbildung der Erfindung sieht vor, das Dichtelement axial bzw. radial anzuordnen. Während die axiale Abdichtung einer Filterpatrone die bisher übliche Abdichtung darstellt, hat dieradiale Abdichtung den Vorteil, daß Längentoleranzen der Filterpatrone einfacher ausgeglichen werden können.A further development of the invention provides for the sealing element to be arranged axially or radially. While the axial sealing of a filter cartridge represents the previously usual sealing, the radial sealing has the advantage that length tolerances of the filter cartridge can be compensated for more easily.
Diese und weitere Merkmale von bevorzugten Weiterbildungen der Erfindung gehen außer aus den Ansprüchen auch aus der Beschreibung und den Zeichnungen hervor, wobei die einzelnen Merkmale jeweils für sich allein oder zu mehreren in Form von Unterkombinationen bei der Ausführungsform der Erfindung und auf anderen Gebieten verwirklicht sein und vorteilhafte sowie für sich schutzfähige Ausführungen darstellen können, für die hier Schutz beansprucht wird. Ausführungsbeispiele der Erfindung sind in den Zeichnungen dargestellt und werden im folgenden näher erläutert. Die Zeichnungen zeigen:These and further features of preferred developments of the invention are evident from the claims and also from the description and the drawings, the individual features being implemented individually or in groups in the form of subcombinations in the embodiment of the invention and in other fields, and can represent advantageous and protectable versions for which protection is claimed here. Embodiments of the invention are shown in the drawings and are explained in more detail below. The drawings show:
Figur la einen Halbschnitt eines Luftfilters mit Filterpatrone,FIG. 1 a half section of an air filter with a filter cartridge,
Figur lb eine Variante eines Luftfilters mit Filterpatrone,FIG. 1b shows a variant of an air filter with a filter cartridge,
Figur 2 ein Dichtungsprofil mit Hohlraum,FIG. 2 shows a sealing profile with a cavity,
Figur 3 ein Dichtungsprofil mit einer offenen Randdichtung.Figure 3 shows a sealing profile with an open edge seal.
Wie in Figur 1 dargestellt, besteht das Ausführungsbeispiel des Luftfilters aus einem Luftfiltergehäuse 10, das mit einem Deckel 1 1 verschlossen ist. Das Filtergehäuse weist einen Rohlufteinlaß 12 und einen Reinluftauslaß 13 auf. Innerhalb des Filtergehäuses befindet sich eine Filterpatrone 14, welche an ihrem oberen Ende mit einer Endscheibe 15 und an dem unteren Ende mit einer Endscheibe 16 versehen ist. Die Filterpatrone besteht im wesentlichen aus einem zick-zack-fόrmig gefalteten Filterpapier 17. Sowohl die Endscheibe 15 als auch die Endscheibe 16 besteht insbesondere aus Santoprene, einer Kombination aus Polypropylen und einem elastomeren Werkstoff.As shown in Figure 1, the embodiment of the air filter consists of an air filter housing 10 which is closed with a cover 11. The filter housing has a raw air inlet 12 and a clean air outlet 13. Inside the filter housing there is a filter cartridge 14 which is provided with an end plate 15 at its upper end and with an end plate 16 at the lower end. The filter cartridge consists essentially of a zigzag folded filter paper 17. Both the end plate 15 and the End plate 16 consists in particular of Santoprene, a combination of polypropylene and an elastomeric material.
An der unteren Endscheibe 16 sind in Figur la, das heißt im linken Halbschnitt, Dichtlippen angeformt. Diese Dichtlippen 18 weisen Dichtungsrillen 19, 20 auf, welche zu einer Erhöhung der Dichtwirkung beitragen. Die Endscheiben werden bei der Montage mit dem Filterpapier 17 erwärmt und in den Papierbalg eingeschmolzen und damit verbunden.In FIG. 1 a, that is to say in the left half-section, sealing lips are formed on the lower end disk 16. These sealing lips 18 have sealing grooves 19, 20 which contribute to an increase in the sealing effect. The end disks are heated during assembly with the filter paper 17 and melted into the paper bellows and connected to it.
Der rechtsseitige Halbschnitt Figur lb zeigt ebenfalls Dichtlippen 21. Diese bewirken eine radiale Abdichtung an dem Ansatz 22 des Reinluftaustritts 13. Wird die Endscheibe 16 beispielsweise im 2-Komponenten Spritzgießverfahren hergestellt, dann ist es zweckmäßig, die erste Komponente als leicht schmelzbare ebene Scheibe auszubilden und die zweite Komponente für den Dichtbereich vorzusehen.The right-hand half section of FIG. 1b also shows sealing lips 21. These provide a radial seal on the attachment 22 of the clean air outlet 13. If the end plate 16 is produced, for example, in a two-component injection molding process, it is expedient to design the first component as an easily meltable flat plate and to provide the second component for the sealing area.
Figur 2 zeigt eine Luftfilterpatrone bei der ein Dichtprofil an der Endscheibe 16 angeordnet ist, welche sowohl eine radiale als auch eine axiale Abdichtung bewirkt. Dieses Dichtprofil ist im sogenannten Gasinnendruckverfahren hergestellt, das heißt, der Hohlraum 23 der Profildichtung wird während des Spritzgießverfahrens durch ein Einblasen von Gas erzeugt. Damit ergibt sich eine Dichtung, die hinsichtlich der Elastizität auf die Anforderungen bezüglich der Stabilität des Filtereinsatzes abgestimmt werden kann. Als Dichtungs- bzw. Endscheibenmaterial eignet sich sowohl TPE als auch Polyamid.Figure 2 shows an air filter cartridge in which a sealing profile is arranged on the end plate 16, which brings about both a radial and an axial seal. This sealing profile is produced in the so-called gas internal pressure process, that is to say the cavity 23 of the profile seal is created during the injection molding process by blowing in gas. This results in a seal that can be adjusted in terms of elasticity to the requirements regarding the stability of the filter insert. Both TPE and polyamide are suitable as sealing or end plate material.
Eine Variante zeigt Figur 3. Hier ist das Dichtungsprofil ein offenes Profil. Die Dichtung bewirkt sowohl eine radiale als auch eine axiale Abdichtung bzw. eine Abdichtung in axialer Richtung und eine Lagestabilisierung der Filterpatrone 14 in radialer Richtung. Auch hier besteht die Möglichkeit, das Dichtungsprofil so zu gestalten, daß beide Funktionen, das heißt die Dichtfunktionen die Lagestabilisierung optimal erfüllt werden. Figure 3 shows a variant. Here, the sealing profile is an open profile. The seal effects both a radial and an axial seal or a seal in the axial direction and a position stabilization of the filter cartridge 14 in the radial direction. Here too there is the possibility of designing the sealing profile in such a way that both functions, that is to say the sealing functions, the position stabilization are optimally fulfilled.
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP9502546A JPH11508180A (en) | 1995-06-16 | 1996-05-24 | Filter patrone |
| BR9608355A BR9608355A (en) | 1995-06-16 | 1996-05-24 | Filter cartridge |
| EP96919804A EP0836525A1 (en) | 1995-06-16 | 1996-05-24 | Filter cartridge |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19521898A DE19521898A1 (en) | 1995-06-16 | 1995-06-16 | Filter cartridge |
| DE19521898.1 | 1995-06-16 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997000113A1 true WO1997000113A1 (en) | 1997-01-03 |
Family
ID=7764514
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1996/002235 Ceased WO1997000113A1 (en) | 1995-06-16 | 1996-05-24 | Filter cartridge |
Country Status (8)
| Country | Link |
|---|---|
| EP (1) | EP0836525A1 (en) |
| JP (1) | JPH11508180A (en) |
| KR (1) | KR19990022799A (en) |
| BR (1) | BR9608355A (en) |
| CZ (1) | CZ402797A3 (en) |
| DE (1) | DE19521898A1 (en) |
| WO (1) | WO1997000113A1 (en) |
| ZA (1) | ZA965106B (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999012629A1 (en) * | 1997-09-08 | 1999-03-18 | Cuno, Incorporated | End-cap for pleated filter cartridge |
| DE19848978A1 (en) * | 1998-10-23 | 2000-04-27 | Knecht Filterwerke Gmbh | Fluid filter includes a filter element which is sealed against a housing by a labyrinth seal formed of two complementary components |
| DE102010023974A1 (en) * | 2010-06-16 | 2011-11-17 | Mahle International Gmbh | Filter arrangement, in particular air filter arrangement |
| US9217399B2 (en) | 2003-02-11 | 2015-12-22 | Donaldson Company, Inc. | Air cleaner arrangements; serviceable filter elements; and, methods |
| EP4417293A1 (en) * | 2023-02-14 | 2024-08-21 | Donaldson Company, Inc. | Filter elements and related filter assembly |
Families Citing this family (23)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19638791A1 (en) * | 1996-09-21 | 1998-03-26 | Mann & Hummel Filter | Air filters, in particular intake air filters for an internal combustion engine |
| DE19712679A1 (en) * | 1997-03-26 | 1998-10-01 | Mann & Hummel Filter | Air filter |
| ZA982922B (en) * | 1997-04-16 | 1998-10-09 | Mann & Hummel Filter | Modular filter system |
| DE19723580A1 (en) * | 1997-06-05 | 1998-12-10 | Knecht Filterwerke Gmbh | Filters for gases and liquids |
| DE29715504U1 (en) * | 1997-08-29 | 1998-12-24 | Filterwerk Mann & Hummel Gmbh, 71638 Ludwigsburg | Housing for a filter element |
| DE19813319A1 (en) * | 1998-03-26 | 1999-09-30 | Knecht Filterwerke Gmbh | Ring-shaped plastic end plate made of polyamide for a ring filter |
| DE19930614A1 (en) * | 1999-07-02 | 2001-01-04 | Mann & Hummel Filter | Filter insert |
| DE10159097A1 (en) | 2001-12-01 | 2003-06-12 | Mahle Filtersysteme Gmbh | Intake air filter for an internal combustion engine |
| DE102004015398A1 (en) | 2003-03-26 | 2004-11-04 | Mann + Hummel Gmbh | Hot-melt bond between pleated filter component and base plate, relies upon grooved base plate, from which material flows into folds during bonding |
| FR2854818B1 (en) * | 2003-05-15 | 2007-04-20 | Filtrauto | FILTER CARTRIDGE FOR INTERNAL COMBUSTION ENGINE LIQUID FILTER AND FILTER COMPRISING SUCH FILTER CARTRIDGE |
| DE102004029225A1 (en) | 2004-06-17 | 2006-01-12 | Hydac Filtertechnik Gmbh | Filter device and filter element |
| US7628837B2 (en) * | 2005-10-19 | 2009-12-08 | Baldwin Filters, Inc. | Air filter with composite end cap |
| US7815705B2 (en) | 2005-10-19 | 2010-10-19 | Baldwin Filters, Inc. | Air filter with composite end cap |
| DE102006003949B4 (en) * | 2006-01-26 | 2008-04-30 | Carl Freudenberg Kg | Filter element with connection element |
| DE202007013822U1 (en) * | 2007-10-02 | 2009-02-19 | Mann+Hummel Gmbh | Filter element and filter system |
| DE202007014821U1 (en) * | 2007-10-02 | 2009-02-26 | Mann+Hummel Gmbh | Filter element V-seal |
| BR112017012950A2 (en) * | 2014-12-19 | 2018-01-09 | Honda Motor Co., Ltd. | vehicular air filter device |
| BR112018012466B1 (en) * | 2015-12-18 | 2021-12-28 | Donaldson Company, Inc. | FILTER CARTRIDGES AND AIR PURIFIER ASSEMBLIES |
| CN114555209A (en) * | 2019-07-26 | 2022-05-27 | 唐纳森公司 | Filter element and method for producing a filter element |
| DE102019129692A1 (en) * | 2019-11-04 | 2021-05-06 | Elsässer Filtertechnik GmbH | Air filter with integrated sealing lip |
| DE102020130142B3 (en) | 2020-11-16 | 2022-02-10 | Mann+Hummel Gmbh | Ring-shaped sealing element for a round filter element, round filter element and filter device |
| EP4218986B1 (en) * | 2022-01-28 | 2025-06-04 | Volvo Truck Corporation | A tubular air filter element |
| US12177725B2 (en) | 2022-03-31 | 2024-12-24 | Dish Wireless L.L.C. | Enabling permissionless cellular roaming connections between user equipment and radio access networks |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1549577A (en) * | 1966-11-17 | 1968-12-13 | ||
| GB1253354A (en) * | 1967-11-16 | 1971-11-10 | Tecalemit Engineering | Improvements in fluid filters |
| FR2266535A1 (en) * | 1974-04-08 | 1975-10-31 | Europ Accumulateurs | Fabrication of a filter cartridge - by pressing heat softened covers in e.g. polypropylene to filter element edges |
Family Cites Families (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD61890A (en) * | ||||
| DE1576541A1 (en) * | 1967-03-17 | 1970-07-02 | Mann & Hummel Filter | Replaceable air filter cartridge |
| DE2738086A1 (en) * | 1977-08-24 | 1979-03-08 | Heinz Hoelter | Air filter with flexible flange - fixed together by material pegs in filter rim holes |
| DE8805049U1 (en) * | 1988-04-16 | 1988-06-01 | Ing. Walter Hengst GmbH & Co KG, 4400 Münster | Air filter |
| DE3838540A1 (en) * | 1988-11-14 | 1990-05-17 | Hengst Walter Gmbh & Co Kg | Filter cartridge, in particular for an intake air filter of an internal combustion engine |
| DE4024898A1 (en) * | 1990-08-06 | 1992-02-13 | Mann & Hummel Filter | INTAKE AIR FILTER FOR THE COMBUSTION ENGINE OF A VEHICLE |
| DE4141969A1 (en) * | 1991-12-19 | 1993-06-24 | Knecht Filterwerke Gmbh | RING FILTER ELEMENT MADE OF A ZIGZAG FOLDED FILTER RAIL MATERIAL |
| DE4241586C1 (en) * | 1992-12-10 | 1994-01-27 | Mann & Hummel Filter | Air filter |
-
1995
- 1995-06-16 DE DE19521898A patent/DE19521898A1/en not_active Withdrawn
-
1996
- 1996-05-24 WO PCT/EP1996/002235 patent/WO1997000113A1/en not_active Ceased
- 1996-05-24 EP EP96919804A patent/EP0836525A1/en not_active Withdrawn
- 1996-05-24 BR BR9608355A patent/BR9608355A/en not_active Application Discontinuation
- 1996-05-24 KR KR1019970709268A patent/KR19990022799A/en not_active Withdrawn
- 1996-05-24 CZ CZ974027A patent/CZ402797A3/en unknown
- 1996-05-24 JP JP9502546A patent/JPH11508180A/en active Pending
- 1996-06-14 ZA ZA965106A patent/ZA965106B/en unknown
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR1549577A (en) * | 1966-11-17 | 1968-12-13 | ||
| GB1253354A (en) * | 1967-11-16 | 1971-11-10 | Tecalemit Engineering | Improvements in fluid filters |
| FR2266535A1 (en) * | 1974-04-08 | 1975-10-31 | Europ Accumulateurs | Fabrication of a filter cartridge - by pressing heat softened covers in e.g. polypropylene to filter element edges |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO1999012629A1 (en) * | 1997-09-08 | 1999-03-18 | Cuno, Incorporated | End-cap for pleated filter cartridge |
| DE19848978A1 (en) * | 1998-10-23 | 2000-04-27 | Knecht Filterwerke Gmbh | Fluid filter includes a filter element which is sealed against a housing by a labyrinth seal formed of two complementary components |
| DE19848978B4 (en) * | 1998-10-23 | 2006-11-09 | Mahle Filtersysteme Gmbh | filter element |
| US9217399B2 (en) | 2003-02-11 | 2015-12-22 | Donaldson Company, Inc. | Air cleaner arrangements; serviceable filter elements; and, methods |
| US10010825B2 (en) | 2003-02-11 | 2018-07-03 | Donaldson Company, Inc. | Air cleaner arrangements; serviceable filter elements; and, methods |
| US10589209B2 (en) | 2003-02-11 | 2020-03-17 | Donaldson Company, Inc. | Air cleaner arrangements; serviceable filter elements; and, methods |
| US11318408B2 (en) | 2003-02-11 | 2022-05-03 | Donaldson Company, Inc. | Air cleaner arrangements; serviceable filter elements; and, methods |
| DE102010023974A1 (en) * | 2010-06-16 | 2011-11-17 | Mahle International Gmbh | Filter arrangement, in particular air filter arrangement |
| US9144763B2 (en) | 2010-06-16 | 2015-09-29 | Mahle International Gmbh | Filter arrangment, in particular air filter arrangement |
| EP4417293A1 (en) * | 2023-02-14 | 2024-08-21 | Donaldson Company, Inc. | Filter elements and related filter assembly |
| WO2024173578A1 (en) * | 2023-02-14 | 2024-08-22 | Donaldson Company, Inc. | Filter elements and related filter assemblies |
Also Published As
| Publication number | Publication date |
|---|---|
| EP0836525A1 (en) | 1998-04-22 |
| KR19990022799A (en) | 1999-03-25 |
| BR9608355A (en) | 1999-03-30 |
| CZ402797A3 (en) | 1998-06-17 |
| DE19521898A1 (en) | 1996-12-19 |
| JPH11508180A (en) | 1999-07-21 |
| ZA965106B (en) | 1997-01-22 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0836525A1 (en) | Filter cartridge | |
| EP0958032B1 (en) | Filter cartridge | |
| EP0897317B1 (en) | End disc for an annular filter element with a seal which acts radially | |
| DE112008002433B4 (en) | Filter element with serrated seal and filter system | |
| EP0828547B1 (en) | Filter, especially air filter for the intake air of an internal combustion engine | |
| DE10058478B4 (en) | Flat filter element with molded frame | |
| EP1163945B1 (en) | Cylindrical filter cartridge with supporting tube | |
| DE1167590B (en) | Fuel filters for internal combustion engines | |
| DE202007018076U1 (en) | Filter device, in particular liquid filter | |
| EP0726389A1 (en) | Air filter housing for internal combustion engine | |
| DE2610584A1 (en) | SELF-LOCKING SEAL | |
| WO2018050367A1 (en) | Filter element and filter system | |
| EP1113853A1 (en) | Filter for liquids, mainly oil or fuel, in an internal combustion engine | |
| WO1997048470A2 (en) | Filter | |
| DE202006018187U1 (en) | filter cartridge | |
| EP1123460A1 (en) | Filter, especially for the intake air of an internal combustion engine | |
| WO2013030085A1 (en) | Filter element and method for production thereof | |
| DE102015108594A1 (en) | Filter with a replaceable filter cartridge and filter cartridge for use in the filter | |
| DE9403669U1 (en) | Filter insert, especially for oil or fuel filters | |
| DE10124612B4 (en) | Round filter cartridge and manufacturing method for such a round filter cartridge | |
| EP1400685A2 (en) | Combined resonator and air filter | |
| DE102008027847A1 (en) | Air filter element has folded filter medium, from which air or gases flow for cleaning, and which has outer boundary, where outer boundary is provided with seal, which works together with retainer housing | |
| DE102023131379A1 (en) | Air filter with support structures centrally attached to a flat filter element | |
| DE102004005211B4 (en) | Annular filter element and associated manufacturing method | |
| DE10106526A1 (en) | Cylindrical filter cartridge with support tube |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| AK | Designated states |
Kind code of ref document: A1 Designated state(s): BR CA CN CZ JP KR US |
|
| AL | Designated countries for regional patents |
Kind code of ref document: A1 Designated state(s): AT BE CH DE DK ES FI FR GB GR IE IT LU MC NL PT SE |
|
| DFPE | Request for preliminary examination filed prior to expiration of 19th month from priority date (pct application filed before 20040101) | ||
| 121 | Ep: the epo has been informed by wipo that ep was designated in this application | ||
| WWE | Wipo information: entry into national phase |
Ref document number: 1996919804 Country of ref document: EP |
|
| WWE | Wipo information: entry into national phase |
Ref document number: 1019970709268 Country of ref document: KR |
|
| ENP | Entry into the national phase |
Ref country code: JP Ref document number: 1997 502546 Kind code of ref document: A Format of ref document f/p: F |
|
| WWE | Wipo information: entry into national phase |
Ref document number: PV1997-4027 Country of ref document: CZ |
|
| WWP | Wipo information: published in national office |
Ref document number: 1996919804 Country of ref document: EP |
|
| WWP | Wipo information: published in national office |
Ref document number: PV1997-4027 Country of ref document: CZ |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 1996919804 Country of ref document: EP |
|
| NENP | Non-entry into the national phase |
Ref country code: CA |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: PV1997-4027 Country of ref document: CZ |
|
| WWP | Wipo information: published in national office |
Ref document number: 1019970709268 Country of ref document: KR |
|
| WWW | Wipo information: withdrawn in national office |
Ref document number: 1019970709268 Country of ref document: KR |