US20150275716A1 - Filter for Filtering Liquids and Filter Element of such a Filter - Google Patents

Filter for Filtering Liquids and Filter Element of such a Filter Download PDF

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Publication number
US20150275716A1
US20150275716A1 US14/736,863 US201514736863A US2015275716A1 US 20150275716 A1 US20150275716 A1 US 20150275716A1 US 201514736863 A US201514736863 A US 201514736863A US 2015275716 A1 US2015275716 A1 US 2015275716A1
Authority
US
United States
Prior art keywords
filter
medium
support body
filter element
housing
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.)
Abandoned
Application number
US14/736,863
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English (en)
Inventor
Guenter Jokschas
Martin Weindorf
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
Assigned to MANN+HUMMEL GMBH reassignment MANN+HUMMEL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEINDORF, MARTIN, Jokschas, Günter
Publication of US20150275716A1 publication Critical patent/US20150275716A1/en
Priority to US16/164,251 priority Critical patent/US10662834B2/en
Abandoned legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01M—LUBRICATING OF MACHINES OR ENGINES IN GENERAL; LUBRICATING INTERNAL COMBUSTION ENGINES; CRANKCASE VENTILATING
    • F01M11/00—Component parts, details or accessories, not provided for in, or of interest apart from, groups F01M1/00 - F01M9/00
    • F01M11/03—Mounting or connecting of lubricant purifying means relative to the machine or engine; Details of lubricant purifying means
    • 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
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/005—Filters specially adapted for use in internal-combustion engine lubrication or fuel systems
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D36/00—Filter circuits or combinations of filters with other separating devices
    • B01D36/003—Filters in combination with devices for the removal of liquids
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/04—Supports for the filtering elements
    • B01D2201/0415—Details of supporting structures
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B01D2201/305—Snap, latch or clip connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/31—Other construction details
    • B01D2201/316—Standpipes

Definitions

  • the invention concerns a filter for filtering liquids, in particular fuel, of an internal combustion engine, in particular of a motor vehicle, comprising a housing with at least one inlet for liquid to be filtered and at least one outlet for filtered liquid, comprising a coaxial filter element that comprises a filter medium with an interior in which at least one support body for supporting the filter medium is coaxially arranged and that is arranged in the housing in such a way that it separates the at least one inlet from the at least one outlet.
  • the invention concerns a filter element of a filter for filtering liquids, in particular fuel, of an internal combustion engine, in particular of a motor vehicle, that can be arranged in a housing with at least one inlet for the liquid to be filtered and at least one outlet for filtered liquid in such a way that it separates the at least one inlet from the at least one outlet and that comprises a coaxial filter medium with an interior in which at least one support body for supporting the filter medium is coaxially arranged.
  • the filter insert for a liquid filter.
  • the liquid filter can serve for purifying fuels for an internal combustion engine.
  • the filter insert is comprised of a star-shaped folded filter element that is resting with its inner circumference on a support pipe provided with cutouts. End disks of plastic material embed seal-tightly the filter element at its upper and lower end.
  • the support pipe which is serving as a support for the filter element is divided into two parts perpendicular to the longitudinal axis.
  • the partial members are formed as one piece together with the end disks.
  • the filter element is not supported across its entire length by the two-part support pipe.
  • the invention has the object to design a filter and a filter element of the aforementioned kind in which the filter medium is stabilized better in particular against radial force actions.
  • the filter medium is mounted coaxially on a central tube that is fast with the housing and in that an inner support body, arranged between the radial inner circumferential side of the filter medium and the central tube, comprises a plurality of support webs which are distributed in axial direction and in circumferential direction across the inner support body and which serve for supporting the filter medium at least radially on the central tube.
  • the inner support body serves for bridging gaps between the radial inner circumferential side of the filter medium and the exterior side of the central tube.
  • the filter medium is supported directly on the inner support body.
  • a further body in particular a support pipe and/or a further filter layer, in particular a coalescing layer, is arranged, the filter medium can also be supported indirectly by means of this body on the inner support body.
  • the central tube can advantageously be fastened stably in particular in a filter cup of the housing.
  • the central tube can be designed as a component lasting a life time.
  • the inner support body prevents that the filter medium collapses in radial inward direction. Accordingly, even great radial forces that are acting on the filter medium can be transmitted by the support body onto the central tube.
  • the filter medium is stabilized along its entire extension.
  • the filter medium remains stable with regard to its shape even when high pressures occur. Accordingly, the filter medium can also be used in filters, in particular in fuel filters, that do not have a bypass valve and therefore may be exposed to a maximum pressure generated within the liquid system.
  • the inner support body can be arranged in a space-saving way even within tight mounting spaces.
  • the inner support body can advantageously be realized as a separate component. In this way, the filter element and the housing can be assembled of modules.
  • an appropriate inner support body can be selected that, in this way, may also function like an adapter.
  • the inner support body can also be connected fixedly with the filter element so that it is a component of the filter element.
  • At least one of the support webs can extend in axial direction.
  • the at least one support web can extend in axial direction across the entire length extension of the filter medium. In this way, a support of the filter medium uniformly along its entire axial extension is possible.
  • Axial webs require little mounting space.
  • Axial support webs can be realized with a material expenditure that is minimal in relation to their surface that is effective for the support action.
  • a media support body can be arranged on which, on a radial outer side, directly or indirectly the radial inner circumferential side of the filter medium and, on a radial inner side, the support webs can be supported.
  • the media support body can be a support pipe which is radially permeable for liquids.
  • the support pipe can be a part of the filter element. It can be fixedly connected with the filter medium. In addition or as an alternative, it can be connected with appropriate end disks of the filter element.
  • the media support body can be a support pipe with stays arranged like a grid, in particular axial stays and/or circumferential stays, and the stays can be arranged such that they can abut against the support webs.
  • a grid-like support pipe can be realized in a simple way. It is stable in axial direction as well as in circumferential direction. Grid openings between the stays realize passages which, in comparison to the liquid-impermeable areas of the stays, can be large. The pressure loss at the support pipe between the inlet side and the outlet side can thus be minimized.
  • solid stay bodies great radial forces can be transmitted so that, together with the support webs, they can provide a good support between the radial inner circumferential side of the filter medium and the central tube.
  • the circumferential and axial distribution of the stays of the support pipe and the distribution of the support webs can be matched to each other.
  • a corresponding stay of the support pipe can rest on each support web.
  • the expansion of the support webs in circumferential direction and in axial direction can be optimized accordingly. In this way, material can be saved. Also, in this way, the liquid-impermeable areas covered by the stays and therefore the pressure losses between clean side and raw side of the filter element can be minimized.
  • the inner support body may advantageously comprise a separating medium for separating water from fuel, in particular a screen-like medium.
  • the separating medium can advantageously be a hydrophobic medium that repels water. Accordingly, water can be retained at the radial outer side of the separating medium. Only the fuel can pass through the separating medium. The retained water can sink in a precipitation gap between the separating medium and the filter medium downwardly or, should the density of the fuel be greater than that of water, can migrate upwardly. The separated water can be collected and removed from the housing.
  • the screen-like separating medium can be realized in a simple way.
  • the inner support body and the separating medium can be made of plastic material.
  • the support webs and the separating medium can be monolithic. In this way, the manufacturing process can be simplified.
  • the support webs can support the separating medium.
  • the separating medium itself can thus be realized in a material-saving way and with minimal weight even with thin wall thicknesses.
  • the separating medium can even be produced of a material that by itself is not shape-stable and that is supported by means of the support webs.
  • the support webs in particular axial support webs, can extend in radial direction on both sides (on an inner side and an outer side in radial direction) of the separating medium.
  • the support webs provide additionally the function of spacers so that between the separating medium and the filter medium, on the one hand, and the separating medium and the central tube, on the other hand, a radially and circumferentially extending gap can be delimited, respectively.
  • circumferentially extending support webs are preferably configured to be more flat in radial direction so that they do not form a barrier for the downwardly flowing water or the upwardly flowing fuel.
  • a coalescing medium can be arranged radially between the inner support body, optionally the media support body, and the filter medium.
  • the coalescing medium can serve for separating water that is contained in the fuel.
  • At the coalescing medium in flow direction downstream of the filter medium, even smallest water droplets which are contained in the fuel can be combined to larger water drops.
  • the fine water droplets can be retained at the coalescing medium and grow to large drops until they are entrained by the fuel flow and carried away from the coalescing medium.
  • the removed water drops in flow direction downstream of the coalescing medium, can then sink downward in a gap between the coalescing medium and the central tube, or optionally the separating medium, or, inasmuch as the density of the fuel is greater than that of water, can migrate upwardly and can be collected.
  • the coalescing medium is designed as a coil, i.e., comprises at least one coiled layer.
  • the filter medium can be folded in a zigzag shape. With a zigzag-shaped folded filter medium an optimal ratio between separating surface and required mounting space can be realized.
  • the filter element can be a round filter element which can be arranged in a space-saving way and can be mounted in a simple way.
  • the housing can be openable and the filter element can be arranged exchangeably in the housing. Accordingly, the filter element can be removed from the housing for servicing purposes and/or cleaning purposes. The filter element can thus be replaced simply with a new filter element.
  • the filter element in that an inner support body is designed such that the filter element can be mounted coaxially on a central tube that is fast with the housing and the inner support body comprises a plurality of support webs distributed across the inner support body for supporting the filter medium at least radially on the central tube.
  • FIG. 1 shows a cross-section of a fuel filter with a filter element with a zigzag-shaped folded filter medium that is supported with an inner support pipe on a central tube of the housing.
  • FIG. 2 is a longitudinal section of the fuel filter of FIG. 1 along the section line II-II indicated therein.
  • FIG. 1 a fuel filter 10 of an internal combustion engine of a motor vehicle is illustrated in cross-section;
  • FIG. 2 shows a longitudinal section of the fuel filter 10 .
  • the fuel filter 10 comprises a filter housing 12 with a housing cup 14 that is substantially cylindrical in its interior and with a housing cover 16 , illustrated in FIG. 2 .
  • the interior of the housing cup 14 tapers slightly conically in downward direction.
  • the housing cover 16 is screwed into an open side of the housing cup 14 .
  • a central tube 18 is arranged coaxially in the housing cup 14 .
  • the central tube 18 is attached by a connecting flange to the bottom of the housing cup 14 .
  • a flow channel 20 and a venting channel or return channel 22 are extending in axial direction.
  • the flow channel 20 is open toward a connecting channel, not shown in the Figures, and the return channel 22 is open toward a return connecting channel 26 in the connecting flange.
  • the filtered fuel can be supplied to the internal combustion engine by means of a connecting channel, not illustrated, that forms an outlet of the filter housing 12 for the filtered fuel.
  • a connecting channel not illustrated
  • gas which collects in the upper part of the filter housing 12 in particular air, and fuel that is present in the filter housing 12 when removing the filter element 30 can be returned into the fuel tank in a way not of interest here.
  • An inlet channel 24 that forms an inlet of the filter housing 12 for the fuel to be filtered extends into an inlet chamber 28 , shown in FIG. 2 , at the bottom of the housing cup 14 .
  • the inlet channel 24 in particular by means of a fuel pump, not illustrated, is connected with a fuel tank, not illustrated, from which the fuel to be filtered can be supplied to the fuel filter 10 .
  • a filter element 30 is exchangeably arranged in the filter housing 12 in axial direction.
  • the filter element 30 separates the inlet from the outlet of the filter housing 12 .
  • the inlet chamber 28 is connected with an annular inlet space 32 which surrounds the filter element 30 outwardly in radial direction.
  • the filter element 30 comprises a filter bellows of a zigzag-shaped folded filter medium 34 which, as a whole, has an approximately hollow cylindrical shape. At its end faces, the filter medium 34 , as illustrated in FIG. 2 , is connected seal-tightly with an upper end disk 36 and a lower end disk 38 .
  • the central tube 18 penetrates the lower end disk 38 .
  • a circumferentially closed coalescing medium 40 that is also approximately hollow-cylindrical is resting on the filter medium 34 .
  • the coalescing medium 40 extends between the two end disks 36 and 38 and is also seal-tightly connected with them.
  • the coalescing medium 40 serves for combining smallest water droplets contained in the fuel to be filtered to large water drops.
  • a grid-like media support body in the form of a media support pipe 42 is arranged in the interior of the filter element 30 .
  • the media support pipe 42 is resting on the radial inner circumferential side of the coalescing medium 40 .
  • the media support pipe 42 supports the filter medium 34 and the coalescing medium 40 .
  • the media support pipe 42 comprises eight axial stays 44 distributed in circumferential direction and each connected with their ends with the upper end disk 36 and the lower end disk 38 .
  • a plurality of circumferential stays 46 which stabilize the axial stays 44 circumferentially and radially are provided at a uniform spacing so that a grid is formed.
  • the inner support pipe 48 comprises four axial support webs 50 which are distributed in circumferential direction and extend in axial direction.
  • the axial support webs 50 are connected to each other by a plurality of circumferential support webs 52 which are distributed in axial direction.
  • sections of a screen-like separating medium 54 are extending.
  • the separating medium (screen) 54 is comprised of a hydrophobic material which is retaining water contained in the fuel.
  • the separating medium 54 , the axial support webs 50 , and the circumferential support webs 52 are seal-tightly connected to each other.
  • the inner support pipe 48 as a whole is circumferentially closed.
  • the axial support webs 50 and the circumferential support webs 52 extend in radial direction on both sides (inner and outer sides) of the separating medium 54 , respectively.
  • Each axial support web 50 is resting flat with its radial outer side on one of the axial stays 44 of the media support pipe 42 . With its radial inner side, it is resting on the radial outer circumferential side of the central tube 18 .
  • the circumferential support webs 52 are positioned with their radial outer circumferential sides at the radial inner sides of the axial stays 44 . Their radial inner circumferential sides are minimally spaced from the outer circumference of the central tube 18 .
  • the axial support webs 50 and the circumferential support webs 52 support in this way the filter medium 34 and the coalescing medium 40 radially relative to the central tube 18 .
  • the inner support pipe 48 is connected at the end faces with the end disks 36 and 38 .
  • the filter element 30 For mounting the fuel filter 10 , the filter element 30 , with the housing cover 16 removed, is mounted with its lower end disk 38 leading in axial direction on the central tube 18 . Subsequently, the housing cover 16 is screwed on. The removal of the filter element 30 is done in reverse direction.
  • the fuel to be filtered is supplied through the inlet channel 24 of the fuel filter 10 to the inlet chamber 28 . It passes from there into the annular inlet space 32 . From the annular inlet space 32 the fuel to be filtered passes in radial direction from the exterior to the interior first through the filter medium 34 and subsequently through the coalescing medium 40 .
  • the axial support webs 50 and the circumferential support webs 52 stabilize the separating medium 54 and support it relative to the media support pipe 42 and the central tube 18 .
  • the axial support webs 50 and the circumferential support webs 52 support moreover the filter medium 34 and the coalescing medium 40 relative to the central tube 18 and prevent in this way that the filter medium 34 may collapse as a result of the pressure difference between the clean side and the raw side.
  • Particles are essentially filtered out of the fuel by the filter medium 34 .
  • the coalescing medium 40 in a way not of interest here, smallest water droplets contained in the fuel are combined to larger water drops. As soon as the water drops have reached a certain size, they are entrained by the fuel flowing through and pass through the grid openings of the media support pipe 42 into a precipitation gap 56 .
  • the precipitation gap 56 has the shape of an annular space which is located between the coalescing medium 40 and the inner support pipe 48 .
  • the fuel from which the particles have been removed passes through the separating medium 54 in a radial direction from the exterior to the interior and reaches an inner annular space 58 .
  • the inner annular space 58 is located between the separating medium 54 and the central tube 18 . From the inner annular space 58 the fuel that has been filtered and from which water has been removed passes through the connecting openings 60 in the wall of the central tube 18 into the flow channel 20 . From the flow channel 20 the filtered fuel flows via the discharge connecting channel 26 into the fuel line and to the internal combustion engine.
  • the water drops contained in the fuel are retained at the separating medium 54 and sink in the precipitation gap 56 downwardly.
  • the precipitation gap 56 is connected at the bottom with a water collecting space 62 , only partially shown, from which the collected water can be removed in a way not of interest here.
  • the invention is not limited to a fuel filter 10 of an internal combustion engine. Instead, it can be used also for other types of liquid filters of an internal combustion engine, for example, oil filters. Moreover, the invention can also be utilized in areas outside of automotive technology, for example, in industrial motors.
  • the separating medium 54 instead of being screen-like, can also be a different type of water-repellent separating medium.
  • the inner support pipe 48 can also be mounted as a separate component in the filter element 30 , for example, also to be separable therefrom.
  • the invention can also be used in filter elements without coalescing medium.
  • the axial support webs 50 and/or the circumferential support webs 52 can also be arranged, instead of on the interior support pipe 48 , directly on an appropriately designed media support pipe.
  • the interior support pipe 48 can be eliminated.
  • the inner support pipe can additionally have the function of a media support pipe so that a separate media support pipe can be eliminated.
  • the inner support pipe 48 can also be designed such that only the axial support webs 50 or only the circumferential support webs 52 are supported in radial outward direction against the filter medium 34 and the coalescing medium 40 and in radial inward direction against the central tube 18 .

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Filtration Of Liquid (AREA)
US14/736,863 2012-12-13 2015-06-11 Filter for Filtering Liquids and Filter Element of such a Filter Abandoned US20150275716A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US16/164,251 US10662834B2 (en) 2012-12-13 2018-10-18 Filter for filtering liquids and filter element of such a filter

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102012024349.9 2012-12-13
DE102012024349.9A DE102012024349B4 (de) 2012-12-13 2012-12-13 Filter zur Filtrierung von Flüssigkeiten und Filterelement eines derartigen Filters
PCT/EP2013/071576 WO2014090447A1 (de) 2012-12-13 2013-10-16 Filter zur filtrierung von flüssigkeiten und filterelement eines derartigen filters

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2013/071576 Continuation WO2014090447A1 (de) 2012-12-13 2013-10-16 Filter zur filtrierung von flüssigkeiten und filterelement eines derartigen filters

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US16/164,251 Continuation US10662834B2 (en) 2012-12-13 2018-10-18 Filter for filtering liquids and filter element of such a filter

Publications (1)

Publication Number Publication Date
US20150275716A1 true US20150275716A1 (en) 2015-10-01

Family

ID=49448131

Family Applications (2)

Application Number Title Priority Date Filing Date
US14/736,863 Abandoned US20150275716A1 (en) 2012-12-13 2015-06-11 Filter for Filtering Liquids and Filter Element of such a Filter
US16/164,251 Active US10662834B2 (en) 2012-12-13 2018-10-18 Filter for filtering liquids and filter element of such a filter

Family Applications After (1)

Application Number Title Priority Date Filing Date
US16/164,251 Active US10662834B2 (en) 2012-12-13 2018-10-18 Filter for filtering liquids and filter element of such a filter

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US (2) US20150275716A1 (de)
DE (2) DE102012024349B4 (de)
WO (1) WO2014090447A1 (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9976525B2 (en) 2015-03-02 2018-05-22 Mahle International Gmbh Fuel filter device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016007233A1 (de) 2016-06-15 2017-12-21 Mann+Hummel Gmbh Filter mit verripptem Gehäusestandrohr sowie Filterelement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864505A (en) * 1956-09-07 1958-12-16 Bendix Aviat Corp Vertical two stage demulsifier filter assembly
US4588500A (en) * 1984-09-04 1986-05-13 Kaydon Corporation Fuel filter and dehydrator
US5997739A (en) * 1998-04-16 1999-12-07 Parker-Hannifin Corporation Fuel/water separator
US20060283160A1 (en) * 2005-04-05 2006-12-21 Johnson Philip E Multi-element filter arrangement and methods
US20110036770A1 (en) * 2009-08-11 2011-02-17 Mann+Hummel Gmbh Sealing Device of a Filter System for Filtering Fluids
WO2011107264A1 (de) * 2010-03-04 2011-09-09 Hydac Filtertechnik Gmbh Filtervorrichtung

Family Cites Families (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3514778C1 (de) * 1985-04-24 1986-08-14 Knecht Filterwerke Gmbh, 7000 Stuttgart Filtereinsatz für einen Flüssigkeitsfilter
DE19934378A1 (de) * 1999-07-22 2001-01-25 Mann & Hummel Filter Filter mit Flüssigkeiten
DE102008046499A1 (de) * 2008-09-09 2010-03-18 Mann + Hummel Gmbh Filter mit Drainageanschluss
DE102010023650A1 (de) * 2010-06-14 2011-12-15 Mann + Hummel Gmbh Filtereinrichtung, insbesondere Flüssigkeitsfilter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2864505A (en) * 1956-09-07 1958-12-16 Bendix Aviat Corp Vertical two stage demulsifier filter assembly
US4588500A (en) * 1984-09-04 1986-05-13 Kaydon Corporation Fuel filter and dehydrator
US5997739A (en) * 1998-04-16 1999-12-07 Parker-Hannifin Corporation Fuel/water separator
US20060283160A1 (en) * 2005-04-05 2006-12-21 Johnson Philip E Multi-element filter arrangement and methods
US20110036770A1 (en) * 2009-08-11 2011-02-17 Mann+Hummel Gmbh Sealing Device of a Filter System for Filtering Fluids
WO2011107264A1 (de) * 2010-03-04 2011-09-09 Hydac Filtertechnik Gmbh Filtervorrichtung

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9976525B2 (en) 2015-03-02 2018-05-22 Mahle International Gmbh Fuel filter device

Also Published As

Publication number Publication date
DE102012024349A1 (de) 2014-06-18
US20190145294A1 (en) 2019-05-16
WO2014090447A1 (de) 2014-06-19
US10662834B2 (en) 2020-05-26
DE102012024349B4 (de) 2015-11-05
DE112013005985A5 (de) 2015-08-27

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