US20200289967A1 - Filter Element with Venting Function for Suspension on a Filter Head, and a Filter System - Google Patents

Filter Element with Venting Function for Suspension on a Filter Head, and a Filter System Download PDF

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Publication number
US20200289967A1
US20200289967A1 US16/837,677 US202016837677A US2020289967A1 US 20200289967 A1 US20200289967 A1 US 20200289967A1 US 202016837677 A US202016837677 A US 202016837677A US 2020289967 A1 US2020289967 A1 US 2020289967A1
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Prior art keywords
filter
filter element
fluid
channel
venting
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
US16/837,677
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English (en)
Inventor
Martin Weindorf
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Mann and Hummel GmbH
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Mann and Hummel GmbH
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Publication of US20200289967A1 publication Critical patent/US20200289967A1/en
Assigned to MANN+HUMMEL GMBH reassignment MANN+HUMMEL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: WEINDORF, MARTIN
Priority to US17/673,161 priority Critical patent/US11517836B2/en
Abandoned legal-status Critical Current

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    • 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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/157—Flow control valves: Damping or calibrated passages
    • B01D35/1573—Flow control valves
    • 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
    • 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
    • B01D35/14—Safety devices specially adapted for filtration; Devices for indicating clogging
    • B01D35/153—Anti-leakage or anti-return valves
    • 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
    • B01D35/30—Filter housing constructions
    • B01D35/306—Filter mounting adapter
    • 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
    • B01D36/001—Filters in combination with devices for the removal of gas, air purge systems
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • 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
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • 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
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • 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
    • B01D2201/20—Pressure-related systems for filters
    • B01D2201/204—Systems for applying vacuum to filters
    • B01D2201/206—Systems for applying vacuum to filters by the weight of the liquid in a tube, e.g. siphon, barometric leg
    • 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
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps
    • B01D2201/295—End caps with projections extending in a radial outward direction, e.g. for use as a guide, spacing means
    • 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
    • B01D2201/302—Details of removable closures, lids, caps, filter heads having inlet or outlet ports
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/40—Special measures for connecting different parts of the filter
    • B01D2201/4015—Bayonet connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/40—Special measures for connecting different parts of the filter
    • B01D2201/4084—Snap or Seeger ring connecting means
    • 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
    • F01M1/00—Pressure lubrication
    • F01M1/10—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters
    • F01M2001/105—Lubricating systems characterised by the provision therein of lubricant venting or purifying means, e.g. of filters characterised by the layout of the purification arrangements

Definitions

  • the invention concerns a filter element for a fluid, in particular fuel or oil that is provided for suspension on a filter head, with a filter medium that is arranged in an annular shape relative to the longitudinal axis of the filter element and that can be flowed through by the fluid to be filtered in a radial direction.
  • the filter element comprises a first end disc.
  • the invention concerns a filter system with such a filter element.
  • Filter elements in particular for fuel or oil, are designed frequently for suspended mounting on a filter head for operational use.
  • the filter elements can be embodied in this context as a filter insert that is exchangeably arrangeable in a filter housing.
  • the filter elements are embodied as so-called exchangeable filters with an enclosure that represents an integral component of the filter element.
  • the filter elements in general are expendable parts and must be exchangeable in practice in a simple and uncomplicated way even in case of tight installation conditions as they are common in the automotive sector.
  • the requirements on filter elements increase continuously due to improvement in performance of downstream devices. For example, in addition to a sufficiently large filtration capacity and, at the same time, compact configuration, a venting possibility of the filter element during operational use is frequently required.
  • DE 10 2013 226 810 A1 discloses a fluid filter with venting function which has a filter housing-associated outlet socket that comprises a central vent and a venting channel arranged radially displaced thereto at a discrete circumferential position.
  • the venting channel extends axially and opens into a fluid outlet channel wherein the venting channel is accommodated in a radially inwardly oriented depression of a circular cross section of the outlet socket. Therefore, the filter element has a simple radially sealed end disc opening as an interface.
  • venting channel is provided also at a discrete circumferential position, but extends in radial direction.
  • a filter element comprising at its end facing upwardly in vertical direction in the filtering operation a coaxial outlet socket with a fluid outlet channel for the filtered fluid and with a venting channel for clean side and/or raw side venting of the filter element, wherein the venting channel coaxially surrounds the fluid outlet channel in radial direction and extends at least in sections thereof in axial direction.
  • the filter system comprises a filter head with a fluid inlet conduit for fluid to be filtered, with a fluid outlet conduit for the filtered fluid, and with a venting conduit, and further comprises a filter element exchangeably connectable to the filter head, in particular a filter element connectable by suspension, as disclosed herein.
  • the filter element comprises at its end that is facing upwardly in filtering operation a coaxial outlet socket which comprises a fluid outlet channel for the filtered fluid and a venting channel for venting the clean side and/or raw side of the filter element.
  • the venting channel surrounds the fluid outlet channel coaxially in a radial direction and extends at least in sections thereof in axial direction.
  • the venting channel is in particular embodied as an annular channel, in particular a circular ring channel, which radially surrounds the fluid outlet channel for the filtered fluid.
  • the filter element can be embodied with only one outlet-associated connecting interface for the filter head. This enables an inexpensive manufacture of the filter element and a particularly compact configuration so that the filter element can be used even in case of tight installation conditions. At the same time, mounting and demounting of the filter element at the filter head can be significantly simplified and accelerated.
  • the coaxial outlet socket comprises at one end one or more actuating members for a valve body of the filter head which preferably extend in axial direction away from the fluid outlet channel and wherein a radial through opening for the filtered fluid is provided at least between two of the plurality of actuating members.
  • the actuating members are arranged such at the fluid outlet channel that they are positioned at regular angular distances relative to each other and form a crown-shaped structure.
  • the actuating member(s) is/are preferably integrally formed at the coaxial outlet socket, i.e., are formed as one piece therewith. In this way, the coaxial outlet socket can be embodied in an inexpensive way as an injection-molded part.
  • the individual actuating member or the plurality of actuating members can be embodied in particular as webs, tongues but also in an arc shape.
  • the filter head-associated valve body is arranged downstream of a clean side outlet of the filter element.
  • the valve body can be in particular a so-called service valve which, after removal of the filter element, closes off the clean side discharge in order to prevent emptying of the downstream fluid system.
  • the venting channel at the inlet side is connected by a first capillary channel with a raw side of the filter medium which is upstream of the filter medium relative to fluid flow.
  • the first capillary channel can be delimited in particular in radial direction inwardly by the coaxial outlet socket and in radial direction outwardly by a first wall section of the first end disc of the filter element.
  • the capillary channel provides for a sufficiently large flow resistance for the fluid to be filtered so that the fluid during the operational use cannot exit or only exit in a limited quantity through the venting channel. Due to the capillary channel, on the one hand, venting of the filter element according to needs can be achieved at its raw side.
  • the venting channel at the inlet side can be connected by a second capillary channel with a clean side of the filter element that is arranged relative to fluid flow downstream of the filter medium.
  • the second capillary channel is preferably delimited in radial direction, on the one hand, by an end section of a tubular support body of the filter element, in particular by a generally known central tube, and on the other hand, by a wall section of the first end disc of the filter element. In this way, additional components of the filter element may be obsolete.
  • the filter element comprises venting at the raw side as well as at the clean side
  • a compressible air volume arranged at the clean side as well as at the raw side can be quickly discharged through the venting channel from the filter element.
  • the filtered fluid therefore can be provided, immediately after start of the filtering operation, with a sufficient pressure or a volume stream sufficient for the respective application purpose. This is in particular advantageous when using the filter element as a fuel filter in motor vehicles with internal combustion engine and a so-called automatic start stop operation.
  • the end section of the tubular support body can engage in axial direction an annular groove of the end disc which is delimited in radial direction inwardly by a first wall section of the end disc and outwardly by a second wall section of the end disc.
  • the first and the second wall sections in this case are advantageously connected to each other as one piece by means of a back section.
  • the first end disc can be embodied inexpensively, for example, as an injection-molded part.
  • the coaxial outlet socket can be embodied according to the invention as one piece or a multi-part configuration, in particular as a two-part configuration.
  • the coaxial outlet socket may comprise two coaxially arranged socket segments.
  • the venting channel can be delimited circumferentially at both sides by the two socket segments in radial direction.
  • one or a plurality of spacer elements for example, ribs or knobs, can be integrally formed by means of which the two socket segments are supported against each other.
  • the filter element according to the invention may comprise a second end disc wherein the filter medium in axial direction is arranged between the first and the second end discs and is fastened at the end faces to both end discs, in particular is glued, welded to the end discs or arranged so as to be held by being embedded in the material of the two end discs.
  • each of the afore explained capillary channels is connected in fluid communication by means of a siphon with the venting outlet, respectively.
  • the filter element comprises a capillary channel connected with the clean side and a capillary channel connected in fluid communication with the raw side
  • these two capillary channels advantageously can be connected in fluid communication by means of a common siphon with the venting channel.
  • Each capillary channel can be embodied, at least in sections thereof, so as to extend in a precise axial direction or so as to extend, at least in sections thereof, in a helical shape about the longitudinal axis.
  • the spiral shape configuration of a capillary channel entails a larger length of the respective capillary channel. In this way, the respective capillary channel, with an unchanged flow resistance relative to a straight configuration of the channel, can be formed with a larger cross section that is advantageous in regard to manufacturing technology.
  • the filter element can be surrounded by an enclosure which constitutes an integral component of the filter element.
  • Such filter elements in practice are generally referred to as exchangeable filters.
  • Such exchangeable filters as needed, are exchanged and disposed of as a unit.
  • the afore explained end disc which is arranged facing upwardly in vertical direction in operational use of the filter element, may also be part of the enclosure of the filter element in this configuration.
  • the end disk can be embodied, for example, in the form of a perforated disk with eccentrically arranged inflow openings for the fluid to be filtered.
  • the filter element embodied as an exchangeable filter can comprise two end discs which are arranged one after another in axial direction and face upwardly in vertical direction in operational use.
  • the filter element may comprise at least a part of a bayonet connection with which the filter element can be coupled in a detachable way with at least one housing component, in particular a housing cover of a filter system.
  • the bayonet connecting part is provided at an end of the filter element which is facing away from the coaxial outlet socket and, particularly preferred, faces downwardly in vertical direction in filtering operation.
  • the bayonet connecting part at the filter element can be provided in particular at a second end disc which forms a bottom end disc.
  • the coaxial connector socket can be pulled out of the filter head for such a removal of the filter element via the housing cover.
  • the filter system serves for filtering a fluid, in particular fuel or oil, and comprises a filter head with a fluid inlet conduit for the fluid to be filtered, a fluid outlet conduit for the filtered fluid, and a venting conduit for venting the filter element.
  • a filter element is exchangeably connectable by suspension, as has been explained above.
  • the filter element can be embodied as a filter insert or as an exchangeable filter.
  • the fluid outlet conduit of the filter head can therefore be provided in accordance with the invention with a valve body which, by connecting the filter element to the filter head, is transferable, in particular slidable, from its closed position in which it fluid-tightly closes the fluid outlet channel into an open position in which it opens the fluid outlet channel.
  • a valve body which, by connecting the filter element to the filter head, is transferable, in particular slidable, from its closed position in which it fluid-tightly closes the fluid outlet channel into an open position in which it opens the fluid outlet channel.
  • the valve body can be transferable from its closed position into its open position exclusively against the force of gravity.
  • this requires a precise fit and easy guiding of the valve body at the filter head which, as the case may be, cannot be sufficiently reliably ensured in the filter heads embodied mostly as cast or injection-molded parts.
  • a higher degree of functional reliability can be achieved according to the invention in that the valve body is transferable against the force of a spring element from its closed position into its open position.
  • the spring element can be in particular embodied as a pressure spring.
  • the filter head can comprise but also form a housing pot.
  • the filter system comprises in this case a housing cover which is detachably fastenable at the housing pot, in particular screwable into or onto the housing pot.
  • the housing cover forms together with the housing pot a filter housing in which the filter element can be exchangeably arranged.
  • the filter element is thus embodied in the form of a filter insert.
  • the housing cover and the filter element comprise preferably bayonet closure elements in order to detachably fasten the filter element by means of a bayonet closure at the housing cover.
  • the housing cover can be comprised of an at least translucent material at least in sections thereof. In this way, mounting and demounting of the filter element by an operator can be monitored visually from the exterior and further simplified as a whole. Due to the cover of at least translucent material, the state of the water collecting chamber, in particular its filling level, can be monitored and the filling and/or venting process can be inspected.
  • FIG. 1 shows a filter system with a filter head and a filter housing for exchangeable accommodation of a filter element, in a perspective view.
  • FIG. 2 shows the filter system according to FIG. 1 in a section illustration.
  • FIG. 3 shows an exposed view of the filter head of the filter system according to FIG. 1 , in a section illustration.
  • FIG. 4 shows an enlarged illustration of the detail of the filter system referenced in FIG. 1 with “E”, in a section illustration.
  • FIG. 5 shows an enlarged illustration of the detail of the filter system identified in FIG. 2 with “D”, in a section illustration.
  • a filter system 10 for filtering contaminants contained in a liquid medium or fluid 12 for example, fuel or oil
  • the filter system 10 comprises a filter head 14 with a housing pot 16 and a housing cover 18 which can be screwed onto or screwed into the housing pot 16 .
  • the housing pot 16 and the housing cover 18 thus form together a filter housing 20 that serves for accommodating a filter element embodied as a filter insert.
  • the filter head 14 comprises according to FIG. 1 a fluid inlet conduit 22 for the fluid 12 to be filtered, a fluid outlet conduit 24 for the filtered fluid as well as a venting conduit 26 through which gas or air collected in the filter element can flow out.
  • the longitudinal axis of the filter system 10 is identified by 28 .
  • the filter system 10 is illustrated in a longitudinal section view.
  • the filter element 30 is connected to the filter head 14 , detachably suspended from a connecting region 32 of the filter head 14 .
  • the filter element 30 extends thus in the filtering operation in vertical direction 34 downwardly away from the filter head 14 .
  • the housing pot 16 comprises an opening 36 which points in vertical direction 34 downwardly in the operational use of the filter system and which, by means of the housing cover 18 , can be closed off fluid-tightly and pressure-tightly.
  • the filter element 30 can be detachably coupled by means of a bayonet connection or closure 38 with the housing cover 18 .
  • the filter element 30 can be detached in a simplified way and with a minimal risk of soiling from the filter head 14 and removed from the housing pot 16 or connected to the filter head 14 .
  • the housing cover 18 is comprised of a translucent material, the bayonet closure 38 as well as the exchange of the filter element 30 can be visually controlled and in this way further simplified as a whole.
  • the fluid outlet conduit 24 of the filter head 14 is provided with a valve body 40 .
  • the valve body 40 is slidably supported in a valve seat 42 of the filter head 14 .
  • the valve body 40 can be designed in a cylinder shape and can be moved against the force of a spring element 44 from a closed position illustrated in FIG. 3 into its open position illustrated in FIG. 2 .
  • An opening stop 46 of the filter head 14 can be formed, for example, by a closure screw 48 of the filter head 14 .
  • the closure screw 48 By the closure screw 48 , the valve seat 42 after mounting of the valve body 40 can be closed in a simple way.
  • a type of revision access to the valve seat 42 can be provided in this way.
  • a closure stop 50 of the valve body can be provided according to FIG. 3 by an annular shoulder of the filter head 14 or, as an alternative, by a spring ring which is inserted into a groove, or something similar.
  • the filter element 30 comprises a top and a bottom end discs 52 , 54 .
  • the end discs 52 , 54 are here an integral component of the filter element 30 embodied as a filter insert.
  • a filter medium 56 is arranged between the two end discs 52 , 54 .
  • the filter medium 56 is arranged in an annular shape relative to the central or longitudinal axis of the filter element 30 and can be embodied in particular in the form of a star-shaped folded bellows.
  • the filter medium 56 is fluid-tightly connected to the two end discs 52 , 54 , respectively.
  • the filter medium 56 can be glued or welded to the end discs 52 , 54 or can be fluid-tightly embedded in the material of the end discs 52 , 54 .
  • a mesh-shaped support or central tube 60 serves for radial inner support of the filter medium 56 .
  • the central tube 60 surrounds the longitudinal axis 58 of the filter element 30 .
  • the filter medium 56 can rest against the central tube 60 directly or indirectly.
  • the bottom end disc 54 comprises here a preferably elastomeric sealing element 62 for a sealing seat of the filter element 30 at the housing cover 18 .
  • a raw side of the filter element 30 that is upstream of the filter medium 56 in fluid flow direction is identified at 64 and the clean side of the filter element 30 that is downstream of the filter medium in fluid flow direction is identified at 66 as a whole.
  • the filter element 30 comprises at its end 68 , facing upwardly in vertical direction 34 in filtering operation, a coaxial outlet socket 70 with, here, a central fluid outlet channel 72 for the filtered liquid medium 12 and with a venting channel 74 for venting of the filter element 30 at the clean side and raw side.
  • the coaxial outlet socket 70 extends in axial direction into the filter head 14 .
  • the coaxial outlet socket 70 can be seal-tightly resting externally in radial direction at the filter head 14 by means of sealing elements 62 .
  • a venting channel 74 surrounds the fluid outlet channel 72 at least in sections thereof in a radial direction relative to the longitudinal axis 58 of the filter element 30 .
  • the coaxial outlet socket 70 comprises in other words two socket segments 70 a , 70 b arranged to extend coaxially and embodied here together as one piece between which the venting channel 74 is formed.
  • the coaxial outlet socket 70 is here arranged, held by clamping, in a central opening of the first (top) end disc 52 of the filter element 30 in radial press fit.
  • the coaxial outlet socket 70 is resting circumferentially in radial direction inwardly at a central tube 60 , in particular the rim section 96 , and in radial direction outwardly at the top end disc 52 of the filter element 30 .
  • the filter element has presently a coaxially arranged end separator arranged therein which essentially also constitutes a central tube.
  • End separator is to be understood, for example, as a hydrophobic screen that is permeable for fuel and retains water.
  • the end separator comprises, for example, a support structure on which, radially inwardly or outwardly, a screen fabric with a predetermined mesh width is fastened. Therefore, it can be in particular provided that a section of the end separator comprises the aforementioned rim section 96 at which the coaxial outlet socket 70 is resting radially inwardly.
  • actuating members 76 for the valve body 40 of the filter head 14 are arranged at one end of the coaxial outlet socket 70 at one end of the coaxial outlet socket 70 .
  • the actuating members can be formed in particular integrally at the coaxial outlet socket 70 so that the latter is embodied as an injection-molded part.
  • the actuating member or members 76 extend preferably in axial, in particular precisely axial, direction away from the coaxial outlet socket 70 .
  • a radial through opening 78 for the filtered fluid is formed so that the filtered fluid 12 can flow out of the fluid outlet channel of the coaxial outlet socket via the fluid outlet conduit 24 of the filter head 14 .
  • a first capillary channel 80 is provided which, according to FIGS. 2 and 4 , is in fluid communication with the venting channel 74 .
  • a second capillary channel 82 is provided which, at the outlet side, is in fluid communication with the venting channel 74 .
  • the first or top end disc 52 of the filter element 30 comprises an annular groove 84 which is open toward the second end disc 54 , i.e., in filtering operation downwardly in vertical direction 34 .
  • the annular groove 84 is delimited in radial direction inwardly by a first wall section 86 of the top end disc 52 and in radial direction outwardly by a second wall section 88 of the top end disc 52 , wherein the first and the second wall sections 86 , 88 are connected by a back section 90 to each other as one piece.
  • the first capillary channel 80 is delimited in radial direction inwardly by the coaxial outlet socket 70 and in radial direction outwardly by the first wall section 86 of the end disc 52 .
  • the second capillary channel 82 is delimited in radial direction, on the one hand, by an end section 92 of the central tube 60 which engages the annular groove of the top end disc 52 and, on the other hand, by the second wall section 88 of the top end disc 52 .
  • the two capillary channels 80 , 82 can be arranged so as to extend spirally about the longitudinal axis 58 of the filter element 30 , respectively.
  • Each capillary channel 80 , 82 is connected in fluid communication by a siphon 94 with the venting channel 74 .
  • the coaxial outlet socket 70 is here embodied as one piece.
  • the coaxial socket can also be of a multi-part configuration.
  • the socket segments 70 a , 70 b preferably comprise spacer elements in the form of ribs, knobs or the like, by means of which the two tubular sockets are resting against each other in sections thereof.
  • FIG. 5 the detail of the filter system 10 that is identified in FIG. 2 by “D” is shown in enlarged illustration.
  • the coaxial outlet socket 70 is positioned at the inner circumference circumferentially at an angled rim section 96 of the central tube 60 in a seal-tight way.
  • the rim section 96 and the coaxial outlet socket 70 in this context can be in a mutual threaded engagement in order to secure the coaxial outlet socket 70 at the central tube 60 in a pull-resistant way.
  • the rim section 96 and the coaxial outlet socket 70 can be connected by a snap connection, in particular an annular snap connection.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Filtration Of Liquid (AREA)
US16/837,677 2017-10-05 2020-04-01 Filter Element with Venting Function for Suspension on a Filter Head, and a Filter System Abandoned US20200289967A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
US17/673,161 US11517836B2 (en) 2017-10-05 2022-02-16 Filter element with venting function for suspension on a filter head, and a filter system

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102017009255.9A DE102017009255A1 (de) 2017-10-05 2017-10-05 Filterelement mit Entlüftungsfunktion für den hängenden Anschluss an einem Filterkopf sowie Filtersystem
DE102017009255.9 2017-10-05
PCT/EP2018/075356 WO2019068470A1 (fr) 2017-10-05 2018-09-19 Élément filtrant comprenant une fonction d'évacuation d'air pour le raccord suspendu à une tête de filtre ainsi que système de filtration

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/075356 Continuation WO2019068470A1 (fr) 2017-10-05 2018-09-19 Élément filtrant comprenant une fonction d'évacuation d'air pour le raccord suspendu à une tête de filtre ainsi que système de filtration

Related Child Applications (1)

Application Number Title Priority Date Filing Date
US17/673,161 Continuation US11517836B2 (en) 2017-10-05 2022-02-16 Filter element with venting function for suspension on a filter head, and a filter system

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Publication Number Publication Date
US20200289967A1 true US20200289967A1 (en) 2020-09-17

Family

ID=63685961

Family Applications (2)

Application Number Title Priority Date Filing Date
US16/837,677 Abandoned US20200289967A1 (en) 2017-10-05 2020-04-01 Filter Element with Venting Function for Suspension on a Filter Head, and a Filter System
US17/673,161 Active US11517836B2 (en) 2017-10-05 2022-02-16 Filter element with venting function for suspension on a filter head, and a filter system

Family Applications After (1)

Application Number Title Priority Date Filing Date
US17/673,161 Active US11517836B2 (en) 2017-10-05 2022-02-16 Filter element with venting function for suspension on a filter head, and a filter system

Country Status (5)

Country Link
US (2) US20200289967A1 (fr)
EP (1) EP3691769B1 (fr)
CN (1) CN111148560B (fr)
DE (1) DE102017009255A1 (fr)
WO (1) WO2019068470A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11649904B2 (en) 2021-03-05 2023-05-16 Mann+Hummel Gmbh Valve unit, filter head for a valve unit, and filter system

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102021002511A1 (de) * 2021-05-12 2022-11-17 Hydac Filtertechnik Gmbh Filtervorrichtung

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DE19519352C2 (de) * 1995-05-26 1997-08-07 Mann & Hummel Filter Filteranordnung
DE19835525C1 (de) * 1998-08-06 1999-10-07 Afriso Euro Index Gmbh Filter mit Entlüftungsleitung (-einrichtung)
CN100563779C (zh) * 2004-06-29 2009-12-02 唐纳森公司 液体过滤器结构和方法
EP2062634B1 (fr) 2005-07-22 2013-04-10 MANN+HUMMEL GmbH Filtre à carburant
DE202007008483U1 (de) * 2006-08-25 2008-01-03 Mann+Hummel Gmbh Funktionselement zum Betätigen eines Ventils
DE102006060127A1 (de) * 2006-12-20 2008-06-26 Mahle International Gmbh Kraftstofffilter
FR2911797B1 (fr) * 2007-01-29 2009-04-17 Filtrauto Sa Cartouche filtrante pour liquide, sous-ensemble de moteur comportant une telle cartouche
DE102010043836A1 (de) * 2010-11-04 2012-05-10 Hengst Gmbh & Co. Kg Filter mit einem austauschbaren Filtereinsatz
US9700818B2 (en) * 2010-12-30 2017-07-11 Baldwin Filters, Inc. Vented liquid filter vented through media
DE102013226810B4 (de) * 2013-12-20 2017-08-10 Robert Bosch Gmbh Flüssigkeitsfilter zur Filterung von Partikeln aus einer Flüssigkeit und Filtergehäuse für einen Flüssigkeitsfilter
DE102016000340B4 (de) * 2016-01-18 2022-02-03 Mann+Hummel Gmbh Filterelement und Filtersystem mit Siphon-Entlüftungseinrichtung
DE102016000339B4 (de) 2016-01-18 2022-02-03 Mann+Hummel Gmbh Filterelement und Filtersystem für ein Flüssigmedium mit rein- und rohseitiger Entlüftung
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11649904B2 (en) 2021-03-05 2023-05-16 Mann+Hummel Gmbh Valve unit, filter head for a valve unit, and filter system

Also Published As

Publication number Publication date
US20220168675A1 (en) 2022-06-02
EP3691769A1 (fr) 2020-08-12
WO2019068470A1 (fr) 2019-04-11
US11517836B2 (en) 2022-12-06
CN111148560B (zh) 2022-01-14
EP3691769B1 (fr) 2022-06-22
BR112020002480A2 (pt) 2020-07-28
DE102017009255A1 (de) 2019-04-11
CN111148560A (zh) 2020-05-12

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