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WO2017050366A1 - A filter insert and a filter arrangement - Google Patents

A filter insert and a filter arrangement Download PDF

Info

Publication number
WO2017050366A1
WO2017050366A1 PCT/EP2015/071879 EP2015071879W WO2017050366A1 WO 2017050366 A1 WO2017050366 A1 WO 2017050366A1 EP 2015071879 W EP2015071879 W EP 2015071879W WO 2017050366 A1 WO2017050366 A1 WO 2017050366A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
filter insert
guiding means
material body
insert
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
Application number
PCT/EP2015/071879
Other languages
French (fr)
Inventor
Robert HOLMDAHL
Claes PIHL
Magnus Svensson
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.)
Volvo Truck Corp
Original Assignee
Volvo Truck Corp
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 Volvo Truck Corp filed Critical Volvo Truck Corp
Priority to PCT/EP2015/071879 priority Critical patent/WO2017050366A1/en
Publication of WO2017050366A1 publication Critical patent/WO2017050366A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • B01D35/16—Cleaning-out devices, e.g. for removing the cake from the filter casing or for evacuating the last remnants of liquid
    • 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
    • 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
    • B01D29/96—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor in which the filtering elements are moved between filtering operations; Particular measures for removing or replacing the filtering elements; Transport systems for filters
    • 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
    • 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
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
    • F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/02—Filtering elements having a conical form
    • 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
    • B01D2201/12—Pleated filters
    • B01D2201/127—Pleated filters with means for keeping the spacing between the pleats
    • 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
    • B01D2201/30—Filter housing constructions
    • B01D2201/301—Details of removable closures, lids, caps, filter heads
    • B01D2201/306—Closures, lids, caps or filter heads forming one element with the filtering element
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/34—Seals or gaskets for filtering elements
    • B01D2201/347—Radial sealings
    • 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
    • B01D2201/4007—Use of cam or ramp systems
    • 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
    • B01D2201/4076—Anti-rotational 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
    • F01M2001/1057—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 comprising a plurality of filters, parallel or serial
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16N—LUBRICATING
    • F16N39/00—Arrangements for conditioning of lubricants in the lubricating system
    • F16N39/06—Arrangements for conditioning of lubricants in the lubricating system by filtration
    • F16N2039/065—Arrangements for conditioning of lubricants in the lubricating system by filtration inlet foot filter

Definitions

  • the invention relates to a filter insert and a filter arrangement for cleaning a fluid. More specifically, the filter insert and filter arrangement are adapted for cleaning a fluid for an internal combustion engine, wherein the fluid may be a liquid such as a lubricating oil or fuel or a gas such as air. Such filters may be provided onboard vehicles and in other applications containing transport systems to remove unwanted solids or other contaminants from the fluid.
  • the filter insert may be called filter cartridge or filter module.
  • the filter arrangement comprises a filter housing, which may be non-removably attached to the internal combustion engine. The filter housing is cup-shaped with an upper open, access end for receipt of the filter insert.
  • the filter housing encompasses at least one inlet for raw fluid to be filtered, which empties into a raw side of the filter housing, and an outlet, which starts at a clean side of the filter housing, for filtered clean fluid.
  • the inlet and outlet are provided in a lower portion of the filter housing.
  • the filter housing defines a longitudinal axis, along which the filter insert can be inserted into the filter housing and removed from it.
  • the filter arrangement further comprises a removable lid for closing the open end of the filter housing during operation.
  • the lid may also be called cover or cap.
  • the invention can be applied in an internal combustion engine, such as a diesel engine, for heavy-duty vehicles, such as trucks, buses and construction equipment. Although the invention will be described with respect to a diesel engine for a truck, the invention is not restricted to this particular application, but may also be used in other types of engines and for other types of vehicles, such as passenger cars.
  • US2012/0267293 discloses a liquid filter including a filter housing, a ring filter insert and a cover.
  • the housing bottom contains an outlet for emptying the housing when the filter insert is removed.
  • the filter insert includes a filter material body surrounded by front panels.
  • a blocking element for the outlet is arranged on one front panel, and positioning elements are provided on the filter insert and on the housing.
  • the positioning elements include an inclined plane and an engaging radially protruding nose.
  • the inclined plane is arranged on one and the nose is arranged on the other of the filter housing part and the ring filter insert.
  • the inclined plane is formed by two partial planes, which run towards each other in opposite direction and which in each case extend across half of the inner or outer circumference of the ring filter insert or half of the inner circumference of the filter housing or half of the outer circumference of the filter housing part arranged inside the ring filter insert.
  • the two partial planes run towards each other and merge into an axial guide for the nose for an axial guide of the blocking element into its corresponding seat.
  • An object of the invention is to provide a filter insert, which creates conditions for a reliable positioning of the filter insert in the filter housing.
  • the object is achieved by a filter insert according to claim 1 .
  • a filter insert for being removably arranged in a filter housing, wherein the filter insert comprises a filter material body, a guiding means arranged at a circumference of the filter material body for guiding the filter insert during movement relative to the filter housing, characterized in that the filter insert guiding means is helical and extends at least a complete turn.
  • the filter material body preferably has a cylindrical shape.
  • the term "cylindrical shape" defines a volume enclosed by two planes perpendicular to an axis extending in an axial direction of the filter insert.
  • the cross section of the cylinder at right angles to the axis is preferably circular forming a right circular cylinder.
  • the filter material body may have the shape of a truncated cone.
  • the filter material body may be hollow-cylindrical and formed by a pleated structure.
  • the filter material body may alternatively be non-cylindrical, for example the volume may not be defined by two planes perpendicular to an axis.
  • the axially limiting portions of the filter material body may be planes, but at least one of them may be non-perpendicular in relation to said axis. Further, at least one of the axially limiting portions of the filter material body may have a shape deviating from a straight plane, such as curved.
  • the term "circumference” is defined as a circumferential surface of the filter insert. The circumferential surface may be continuous in a circumferential direction or, as in the example of the pleated structure, be non-continuous in the circumferential direction.
  • the filter insert guiding means is preferably adapted to position the filter insert in a correct operational position in the filter housing.
  • helical defines a structure in the form of a helix.
  • the tangent line at any point along the extension of the helical guiding means makes a constant angle with a central axis of the filter insert.
  • the filter insert guiding means extends at least a complete turn of the inner or outer circumference of the filter material body.
  • the helical guiding means completely surrounds the filter material body in the circumferential direction.
  • the helical guiding means encloses the filter material body.
  • the filter material body is hollow and the helical guiding means extends inside of it and makes a complete turn.
  • the filter insert guiding means is adapted to engage a corresponding guiding means in an inner peripheral wall of the filter housing, and preferably a correspondingly shaped helical guiding means in the inner peripheral wall of the filter housing.
  • the helical guiding means of the filter insert and the corresponding guiding means of filter housing will engage and be moved in relation to each other such that they slide along each other thereby controlling a rotational movement of the filter insert at least one turn in relation to the filter housing.
  • the guiding means can be embodied with a very small overall size, viewed in radial direction, so that an increase of the diameter of the filter housing or a reduction of the diameter of the filter insert also does not become necessary to accommodate the guiding means.
  • the helical guiding means of the filter insert may be the only means for attachment of the lid to the filter housing. More specifically, the helical guiding means may be designed such that the lid is tightly screwed to the filter housing via the helical guiding means. It creates conditions for a cost-efficient design in that only one guiding means is required.
  • the filter insert design creates conditions for a controlled and quick insertion of the filter insert towards its operational position in the filter housing. Likewise, the filter insert design creates conditions for a controlled and quick withdrawal of the filter insert from its operational position in the filter housing.
  • the facilitated insertion/withdrawal of the filter insert is especially pronounced if the helical filter insert guiding means has a pitch substantially larger than a conventional thread pitch between the lid and the filter housing.
  • the external surface of the helical guiding means has a symmetrical cross section with regard to a center plane in the extension direction of the guiding means.
  • the cross section is symmetrical in a direction perpendicular to the extension direction of the guiding means.
  • the guiding means has a first surface section on a first side of the center plane, which is arranged for contacting a corresponding guiding surface of the filter housing wall when the filter insert is moved in a first direction (insertion direction) and has a second surface section on a second side of the center plane, which is arranged for contacting a corresponding guiding surface of the filter housing wall when the filter insert is moved in a second direction (withdrawal direction).
  • first and second surface sections are mirrored in the center plane.
  • the filter insert guiding means extends at least two complete turns. This creates conditions for an improved control of the movement of the filter insert relative to the filter housing and a more reliable positioning of the filter insert in the filter housing. Further preferably, the filter insert guiding means extends less than five complete turns and especially less than four complete turns. By limiting the number of turns to about 2-3 of the helical filter insert guiding means, the filter insert exchange will be quick while still ensuring a robust positioning of the filter insert.
  • the filter material body is exposed in a radial direction of the filter insert beside the filter insert guiding means and especially between consecutive turns of the filter insert guiding means.
  • the filter material body is exposed on different sides of the filter insert guiding means in an axial direction of the filter insert.
  • the complete radially exposed area of the filter material body is substantially not reduced and consequently the filtering function is substantially not impaired by the presence of the filter insert guiding means.
  • the helical filter insert guiding means is formed by an elongated helical member, wherein the filter material body is exposed in a radial direction of the filter insert on each side of the elongated helical member.
  • the filter material body is exposed on different sides of the filter insert guiding means in an axial direction of the filter insert.
  • the filter insert guiding means forms a relatively rigid structure in a circumferential direction. It creates further conditions for a reliable insertion/withdrawal of the filter insert. Especially, the filter insert guiding means forms a relatively rigid structure relative to the rigidity of the filter material body.
  • the filter insert guiding means extends over at least 50% of the filter insert extension in an axial direction of the filter insert. It creates further conditions for a reliable insertion/withdrawal of the filter insert. Especially, the filter insert guiding means extends over substantially the complete filter insert extension in an axial direction of the filter insert. It creates further conditions for a structurally rigid construction. Guiding support along its complete length relative to the filter housing inner wall secures a reliable movement and positioning of the filter insert.
  • the filter insert guiding means is arranged in contact with the circumference of the filter material body for reinforcing the filter material body. In this way, a risk of collapsing of the filter material body is reduced, wherein the need for any further reinforcement of the filter material is reduced.
  • the filter insert guiding means is preferably rigidly attached to the filter material body at the circumference of the filter material body.
  • the filter insert guiding means is rigidly attached to the filter material body via glue or other fastening means.
  • the filter material body is formed by a pleated structure and the filter insert guiding means is arranged to bridge a gap between two circumferentially spaced pleats in the pleated structure.
  • the filter material body is formed by a pleated structure and the filter insert guiding means is arranged to bridge gaps between substantially all circumferentially spaced pleats in the pleated structure.
  • the filter insert guiding means is rigidly attached to circumferentially spaced pleats of the filter material body via glue or other fastening means.
  • the helical filter insert guiding means is accessible in an axial direction of the filter insert for engagement with a corresponding guiding means in the filter housing. It creates conditions for a quick and easy alignment of the filter insert relative to the filter housing.
  • an end portion of the helical filter insert guiding means is accessible in an axial direction of the filter insert. Said end portion may be designed to project outwards from an envelope surface of the filter material body or alternatively project inwards from an envelope surface of the filter material body.
  • an entrance portion of the guiding means of one of the filter insert and the filter housing may be designed with an increased width in an axial direction for securing receipt of a corresponding end portion of the guiding means of the other one of the filter insert and the filter housing so that the corresponding end portion of the guiding means is captured by the entrance portion during insertion of the filter insert into the filter housing.
  • the filter insert guiding means is continuous along its complete extension. It creates conditions for a good control of the insertion and withdrawal of the filter insert relative to the filter housing and also a proper positioning of the filter insert in its operational position in the filter housing.
  • the filter insert guiding means is formed by at least one projection projecting radially from the circumference of the filter material body.
  • the projection is elongated in the helical extension direction of the guiding means.
  • the filter insert guiding means is formed by a projection in the form of a rib or ridge extending helically.
  • the filter insert guiding means is formed by a single elongated projection extending helically.
  • the projection is attached to the filter material body.
  • the filter insert guiding means is formed by at least one recess, which is open/exposed in a radial direction of the filter material body.
  • the recess is elongated in the helical extension direction of the guiding means.
  • the recess may be in the form of a groove.
  • the filter insert guiding means is formed by a rail defining the elongated recess and projecting radially from the circumference of the filter material body.
  • the rail is attached to the filter material body.
  • the filter insert guiding means is provided on an outer circumference of the filter material body.
  • the filter insert guiding means is provided on a radially outer surface of the filter material body.
  • the filter insert guiding means is provided on a surface of the filter material body exposed radially outwards. This is especially advantageous in that the guiding means is provided on a maximum diameter creating conditions for a robust control of the movement of the filter insert relative to the filter housing.
  • the filter material body is in the form of a pleated circular cylindrical structure since the distances between adjacent pleats are the largest at the outer circumference and thereby a reinforcement of the filter material body is achieved.
  • the filter material body is hollow and the filter insert guiding means is provided on an inner circumference of the filter material body.
  • the filter insert guiding means is provided on a radially inner surface of the filter material body.
  • the filter insert guiding means is provided on a surface of the filter material body exposed radially inwards.
  • the guiding means may replace an internal grid-shaped support dome for reinforcing the filter material body arranged inside the filter material body.
  • the helical guiding means may be easily integrally formed with or attached on such a grid-shaped support dome.
  • placing the guiding means on an inner surface of the filter material body is advantageous in that the guiding means will not interfere with the fluid flow in the outer gap between the filter insert and the housing.
  • the filter insert comprises a member for actuating a drainage means in the filter housing and wherein the drainage means actuating member is eccentrically positioned at one end of the filter insert for actuating the drainage means when the filter insert is completely inserted into the filter housing via engagement between the helical guiding means of the filter insert and the filter housing.
  • the drainage means actuating member may be formed by a projection acting on a blocking element for being received in a seat in the filter housing.
  • the blocking element can be a radially or axially sealing valve element.
  • the drainage means actuating member may be rigidly connected to a lower front panel of the filter insert.
  • the filter insert comprises a filter material body support structure at at least one end of the filter insert in its axial direction, wherein the filter material body support structure has a main extension in a radial direction of the filter insert and wherein the filter insert guiding means is rigidly connected to the filter material body support structure.
  • the filter material body support structure is preferably configured to give a rigid support to the filter insert.
  • the filter material body support structure is preferably configured to be provided with sealing means for sealing the filter insert to the filter housing and lid, respectively.
  • the filter material body support structure has a plate shaped structure.
  • the filter material body support structure may be termed a panel.
  • the elongated helical member preferably extends all the way between the opposite panels and is preferably rigidly attached to the panels.
  • the filter insert comprises means for engagement with a lid, which is adapted for closing the filter housing. It creates conditions for a less messy filter insert exchange operation since the service operator may only contact the lid during withdrawal of the filter insert from the filter housing, especially if the lid engagement means is adapted for a connection between the lid and the filter insert guiding means allowing the filter insert and the lid to be interconnected for being moved in unison in relation to the filter housing.
  • the lid engagement means may be formed by a tubular portion inside the filter material body, preferably with a central axis coinciding with a central axis of the filter insert. Further, preferably, the lid engagement means is rigidly attached to an upper one of the filter material body support structure at the axial end of the filter insert.
  • the lid engagement means is adapted for a rotationally rigid connection between the lid and the filter insert guiding means. It creates conditions for replacing a conventional thread of a screw lid of the filter housing with the filter insert guiding means.
  • the lid engagement means is adapted for a rigid connection between the lid and the filter insert guiding means such that a turning movement of the lid towards and away from its operational position closing the filter housing is controlled by the engagement between the helical filter insert guiding means and corresponding guiding means in the filter housing.
  • the invention is related to a filter arrangement comprising
  • a filter housing arranged for receiving the filter insert, wherein an inner peripheral wall of the filter housing is provided with a helical guiding means for engagement with the filter material body guiding means.
  • the helical filter insert guiding means is radially projecting from one of the filter material body and the filter housing inner peripheral wall and wherein the helical filter insert guiding means is radially recessed in the other one of the filter material body and the filter housing inner peripheral wall.
  • the filter housing comprises a closed end and an opposite open end and wherein the filter arrangement further comprises
  • Fig. 1 discloses a vehicle in the form of a truck in a side view
  • Fig. 2 discloses an internal combustion engine of the truck in a perspective view with a filter arrangement attached
  • Fig. 3 discloses the filter arrangement of figure 2 in a partly disassembled state
  • Fig. 4 is a perspective view from the top of a filter insert according to a first embodiment example
  • Fig. 5 is a perspective view from below of the filter insert according to the first embodiment example
  • Fig. 6 is an exploded view of the filter insert of figure 4-5
  • Fig. 7 is a perspective view from the top of a lid according to a first embodiment example
  • Fig. 8 is a perspective view from below of the lid according to the first embodiment example
  • Fig.9 discloses the lid according to the first embodiment example attached to the filter insert according to the first embodiment example
  • Fig. 10 is a partially cut perspective view from the top of a filter housing according to a first embodiment example
  • Fig. 1 1 is a further partially cut perspective view from the top of the filter housing according to figure 10,
  • Fig. 12 is an exploded view of a filter arrangement according to a first embodiment example comprising the filter insert, lid and filter housing according to figures 1 -8,
  • Fig. 13 is a partly cut cross sectional view of the filter arrangement according to figure 12,
  • Fig.14 is a partly cut perspective view of the filter arrangement according to figure 12,
  • Fig. 15 discloses an alternative embodiment example of the filter insert according to figures 4-5
  • Fig. 16-17 discloses a second embodiment example of the filter insert in similar view as in figures 4-5
  • Fig. 18 discloses the lid according to figures 7-8 attached to the filter insert according to the second embodiment example
  • Fig. 19 discloses a filter housing according to a second embodiment example in a similar view as in figure 10
  • Fig. 20 discloses the filter housing according to the second embodiment example in a similar view as in figure 13,
  • Fig. 21 is an exploded view of a filter arrangement according to a second embodiment example comprising the filter insert, lid and filter housing according to figures 16-20,
  • Fig. 22 discloses an alternative embodiment example of the filter housing according to figure 19,
  • Fig. 23-24 discloses a third embodiment example of the filter insert in similar view as in figures 4-5,
  • Fig. 25 is an exploded view of the filter insert of figure 23-24
  • Fig. 26-27 discloses a third embodiment example of the filter housing in similar view as in figures 10 and 13,
  • Fig. 28 is an exploded view of the filter insert of figures 23-27,
  • Fig. 29-30 discloses a fourth embodiment example of the filter insert in similar view as in figures 4-5,
  • Fig. 31 is an exploded view of the filter insert of figure 29-30
  • Fig. 32-33 discloses a fourth embodiment example of the filter housing in similar view as in figures 26-27
  • Fig. 34-35 discloses a fifth embodiment example of the filter insert in similar view as in figures 4-5
  • Fig. 36 discloses a fifth embodiment example of the filter housing in similar view as in fig. 10, and
  • Fig.37 discloses insertion of the filter insert according to figures 34-35 provided with a lid according to figures 7-8 in a housing according to figure 36.
  • Fig. 1 discloses a vehicle in the form of a truck 1 in a partly cut side view. Further, an internal combustion engine (ICE) in the form of a diesel engine 2 for propelling the truck is indicated.
  • Figure 2 shows the internal combustion engine 2 provided with a filter arrangement 3 according to a first embodiment of the invention.
  • the filter arrangement 3 is adapted for filtering a fluid for the internal combustion engine. More specifically, there are three filter arrangements 3 arranged in parallel with each other.
  • the filter arrangement 3 comprises a filter housing 105, which is non-removably attached to the internal combustion engine.
  • the filter arrangement 3 is in an upright, standing position, slightly inclined outwards from its attachment at the bottom relative to a side of the ICE.
  • a lower section of the filter arrangement comprises inlets and outlets.
  • the filter housing 105 is in the form of a cup- shaped part, which is rigidly attached to the lower section.
  • the filter housing 105 defines a longitudinal axis 107 along which a filter insert (not shown) can be inserted into the filter housing and removed from the filter housing.
  • the filter arrangement 3 further comprises a lid 120 for closing the filter housing.
  • Fig. 3 discloses the filter arrangement 3 of figure 2 in a partly disassembled state.
  • a filter insert 100 according to a first embodiment example is attached to the lid 120 for being inserted into the filter housing 105 via a rotational movement around the longitudinal axis 107.
  • FIG 4-5 shows the filter insert 100 from figure 3 for being removably arranged in the filter housing 105.
  • the filter insert 100 comprises a filter material body 102.
  • the filter material body 102 has a hollow circular cylindrical shape.
  • the filter material body 102 has an external cross sectional shape generally defining a circle.
  • the filter material body 102 has an internal cross sectional shape generally defining a circle.
  • the filter material body 102 is formed by a pleated structure. More specifically, the filter material body 102 is formed by an elongated sheet of paper (strip), which has been 5 folded successively back and forth and configured to assume the cylindrical shape, for example via rolling.
  • the cylindrical filter material body 102 has its axis parallel to the line of the pleatings.
  • the filter insert 100 further comprises a guiding means 104 arranged at a circumference 10 of the filter material body for guiding the filter insert during movement relative to the filter housing 105.
  • the filter insert guiding means 104 is helical and extends about two complete turns around the filter material body 102. Thus, the filter insert guiding means 104 is provided on an outer circumference of the filter material body 102.
  • the filter material body 102 is exposed in a radial direction of the filter insert 100 between 15 consecutive turns of the filter insert guiding means 104.
  • the helical filter insert guiding means 104 is formed by an elongated helical member. Thus, the filter material body 102 is exposed in a radial direction of the filter insert 100 on each side of the elongated helical member 104.
  • the helical filter insert guiding means 104 extends over the complete filter insert extension in an axial direction 101 of the filter insert 100.
  • the filter insert is arranged so that the axial direction 101 of the filter insert 100 will coincide with the longitudinal direction 107 of the filter housing 105 during insertion.
  • the filter insert guiding means 102 forms a relatively rigid structure in a circumferential direction. Further, the filter
  • insert guiding means 104 is arranged in contact with the circumference of the filter material body 102 for reinforcing the filter material body. More specifically, the filter insert guiding means 104 is arranged to bridge gaps between substantially all circumferentially spaced pleats in the pleated structure 102. Further, the helical filter insert guiding means 104 is accessible in an axial direction of the filter insert for engagement with a
  • the filter insert guiding means 104 is continuous along its complete extension. More specifically, the filter insert guiding means 104 is formed by at least one projection 106 projecting radially from the circumference of the filter material body. The projection 35 106 is formed by a rib or ridge attached to the pleat edges.
  • the guiding means 104 is provided with a contact surface on both sides in the axial direction for contacting the corresponding guiding means of the filter housing on a first, upper side 109 during insertion and a second, lower side 1 1 1 during withdrawal.
  • the 5 filter insert guiding means 104 is arranged for guiding the filter insert 100 during both insertion and withdrawal of the filter insert from the filter housing.
  • the guiding means 104 has a rounded outer surface in cross section, especially in the shape of a half-circle in cross section, wherein the contact surfaces are rounded.
  • the filter insert guiding means 104 may be configured for contacting the corresponding guiding means of the filter 10 housing simultaneously on both the upper side 109 and the lower side 1 1 1 during insertion and removal, respectively.
  • the guiding means may have a different cross section, wherein the contact surfaces are planar or substantially to planar.
  • the filter insert 100 further comprises a filter material body support structure 108,1 10 at each end of the filter insert in its axial direction.
  • the filter material body support structures 108,1 10 have a main extension in a radial direction of the filter insert.
  • the filter insert guiding means 104 is rigidly connected at each end to the filter material body support structures 108,1 10, which implies a relatively rigid construction of the filter insert
  • Each of the filter material body support structures 108,1 10 has a plate shaped structure extending in a plane perpendicular to the axial direction of the filter insert.
  • the filter material body support structures 108,1 10 will in the following be referred to as an upper and lower panel 108,1 10.
  • the filter material body 102 is delimited on the top by the upper panel 108 and on the bottom by a lower panel 1 10.
  • the panels 108,1 10 may
  • the filter material body 102 is then bonded to the upper panel 108 and lower panel 1 10 at the edges of the filter paper in the axial direction of the filter insert.
  • the panels 108,1 10 may be made of plastics and the filter material body 102 is connected to the panels by non-contact infrared bonding or other bonding processes, such as hot-plate bonding. Alternatively, the panels
  • 30 108,1 10 are formed by a glue or other fastening fluid attached to the edges of the filter material body 102 in the axial direction of the filter insert and then solidifed.
  • the helical guiding means 104 is embodied integrally with the filter insert.
  • the helical guiding means 104 may be formed integrally with one of the end panels 108,1 10 of 35 the filter insert securing a rigid construction.
  • the helical guiding means 104 is attached to the filter material body circumference for reinforcement of the filter material body.
  • the guiding means 104 it is also possible for the guiding means 104 to be made as a separate part and to be connected to the panels 108,1 10. Further, the helical guiding means 104 projects radially relative to the panels 108,1 10 seen in the axial direction.
  • the filter insert 100 further comprises sealing means 122,124 for sealingly engage an inner surface of the lid 120 and the filter housing 105, respectively, in order to separate a raw side from a clean side of the filtering arrangement.
  • a first sealing means 122 in the form of a ring is provided on an external side of the upper panel 108 for a sealing engagement with the lid 120.
  • a second sealing means 124 in the form of a ring is provided on an external side of the lower panel 1 10 for a sealing engagement with a bottom surface of the filter housing 105.
  • Each of the sealing means 122,124 is arranged on a conical surface 125,127 and adapted to seal against a correspondingly shaped surface of the lid and the filter housing, respectively.
  • the filter insert 100 comprises means 1 12 for engagement with the lid 120, see also figures 7-8, which is adapted for closing the filter housing 105.
  • the lid engagement means 1 12 is adapted for a rotationally rigid connection between the lid 120 and the filter insert guiding means 102. Further, the lid engagement means 1 12 is adapted for a connection between the lid 120 and the filter insert guiding means 102 allowing the filter insert 100 and the lid 120 to be interconnected for being moved in unison in relation to the filter housing 105.
  • the filter insert guiding means 102 is arranged to be removably attached to the lid in such a manner that the lid 120 can be gripped, rotated and then lifted from the filter housing 105 while the filter insert is moved in unison with the lid.
  • the lid engagement means 1 12 is adapted for a rigid connection between the lid 120 and the filter insert guiding means 102 such that a turning movement of the lid towards and away from its operational position closing the filter housing 105 is controlled by the engagement between the helical filter insert guiding means 104 and corresponding guiding means 130 in the filter housing 105.
  • the lid engagement means 1 12 is adapted for a rotationally rigid connection between the lid 120 and the upper panel 108.
  • the lid engagement means 1 12 is formed by a tubular structure 1 14 arranged inside of the filter material body 102.
  • the tubular structure 1 14 is formed in a one-piece unit with the upper panel 108. Further, the tubular structure 1 14 has a slightly cone-shaped portion for a facilitated engagement with the lid. Further, the tubular structure 1 14 has a plurality of circumferentially spaced snap means 1 16a,b in the form of openings for a snap connection with the lid 120.
  • the filter insert comprises a member or blocking element 1 19 for actuating a drainage means 138 in the filter housing 105.
  • the drainage means actuating member 1 19 projects axially from the lower panel 1 10 and is eccentrically positioned for actuating the drainage means 138 when the filter insert 100 is completely inserted into the filter housing 105 via engagement between the helical guiding means 104 of the filter insert 100 and the filter housing 105.
  • the drainage member 1 19 comprises a section 140 formed by a ramp, which extends in a circumferential direction of the filter insert, wherein a corresponding portion of the drainage means 138 in the filter housing 105 is adapted to ride along the ramp during a rotational movement of the filter insert 100 relative to the filter housing 105.
  • Fig. 6 is an exploded view of the filter insert of figure 4-5.
  • FIG 7-8 shows a lid 120 according to a first embodiment example for being removably attached to the filter housing 105.
  • the lid 120 comprises a plate shaped portion 122, snap means 124 projecting from a first, lower side of the plate shaped portion 122, for attachment to the filter insert, and engagement means 126 arranged on a second, upper side of the plate shaped portion 122, for engagement with a tool during insertion and removal of the filter insert.
  • the plate shaped portion 122, snap means 124 and engagement means 126 are preferably formed in a one-piece unit.
  • the engagement means 126 has a peripheral polygonal shape for engagement with a correspondingly designed removal tool.
  • the engagement means 126 is here in the form of an axial projection. According to an alternative, the engagement means may be formed by an axial projection.
  • the snap means 124 is formed by a plurality of circumferentially spaced fingers projecting from the plate shaped portion 122.
  • the snap means 124 comprises four fingers. Each finger forms a hook and comprises a first, substantially straight portion, extending in parallel with an axis of the lid and a second radially projecting portion extending from a free end of the straight portion.
  • the fingers are radially elastic for riding along an inside surface of the tubular portion 1 14 in a compressed state before reaching its associated opening 1 16 and then radially flex into the opening.
  • the filter insert 100 is in this way locked on its upper front panel to the lid via the snap-lock means 124, so that the removal of the lid from the housing automatically leads to a removal of the filter insert from the housing.
  • the lid 120 further comprises a part 129 projecting from the first, lower side of the plate shaped portion 122, which part 129 has a surface adapted for sealing engagement with a corresponding surface of the filter insert.
  • the part 129 has the shape of a truncated cone, wherein the sealing surface is inclined in relation to a rotational axis of the lid.
  • the sealing part 129 is provided between the plate shaped portion 122 and the snap means 124. Further, the sealing part 129 forms a one-piece unit with the plate shaped portion 122 and the snap means 124.
  • the snap means 1 16,124 projects from a lower portion of the sealing part 129.
  • the lid 120 may as a complement, or alternative, to the engagement means 126 comprise a handle at a second side of the lid, opposite the snap means 124 for manual operation of the lid by a service technician during a filter insert insertion/withdrawal/exchange.
  • a handle may be formed in a one-piece unit with the plate shaped portion 122.
  • Fig.9 discloses the lid 120 according to the first embodiment example attached to the filter insert 100 according to the first embodiment example.
  • a turning movement of the lid towards and away from its operational position closing the filter housing is controlled by the engagement between the helical filter insert guiding means 104 and the corresponding filter housing guiding means 130.
  • the used filter insert 100 would be removed from the filter housing 105 together with the lid 120 when the lid 120 is unscrewed from the housing.
  • the lid 120 is then detached from the used filter insert 100, the used filter insert scrapped and the lid 120 attached to a new filter insert for insertion into the filter housing 105.
  • Fig. 10 is a partially cut perspective view from the top of the filter housing 105 according to a first embodiment example.
  • the filter housing 105 has a cylindrical inner wall 128 with a circular cross section. The diameter of the circular cylindrical wall 128 is matched to the diameter of the filter material body 102 establishing a gap between them.
  • a helical filter insert guiding means 130 in the form of a helically extending recess or groove is provided in the inner wall 128.
  • the filter insert guiding means 130 is adapted to match the design of the helical guiding means 104 of the filter insert 100 for a close engagement allowing sliding of the filter insert guiding means 104 along the guiding means 130 of the filter housing 105. More specifically, the filter insert guiding means 130 is adapted with regard to cross section shape and size to match the design of the helical guiding means 104 of the filter insert 100.
  • the filter housing 105 has a cone-shaped upstanding, central tubular portion 131 for receipt in the opening of the filter insert at a lower portion thereof.
  • the cone-shaped tubular portion 131 is arranged to guide the filter insert to its correct operational position.
  • the sealing means is realized between the cone-shaped tubular portion 131 and the sealing 124 of the filter insert.
  • the filter housing 105 further comprises a fluid permeable tubular central post 143 for being received in the central opening in the filter insert 100.
  • the central post 143 is grid-shaped.
  • the filter housing 105 comprises an inlet 132 for receipt of a raw fluid to be filtered, which empties into a raw side of the filter housing, and an outlet or return 134, which starts at a clean side of the filter housing, for filtered clean fluid.
  • the inlet 132 and outlet 134 are provided in a lower region 136 of the filter housing 105.
  • the inlet 132 and outlet 134 are in communication with different sides of the filter material body 102. More specifically, the outlet 134 is provided in a bottom wall 138 of the filter housing and positioned radially centrally and adapted to match the position of the central opening in the fluid permeable central post 143. The outlet 134 is thus fluid communication with an interior side of the fluid permeable tubular central post 143. Further, the inlet 132 is positioned radially eccentric in the bottom wall 138 of the filter housing for distributing the fluid to a radially external side of the filter material body 102. The direction of the fluid inside the filter arrangement is disclosed in figure 13.
  • the filter housing 105 comprises the drainage means 138, see figures 10-14, in the form of a drainage valve in the lower region 136 of the filter housing 105 and specifically in the bottom wall 138 of the filter housing 105.
  • the drainage means 138 is positioned radially eccentric in the bottom wall 138 of the filter housing and adapted to receive the drainage means actuating member 1 19 for blocking the valve.
  • the filter housing 105 furthermore has a drain outlet 145, through which an emptying of the filter housing is carried out in response to a replacement of the filter insert.
  • the lid 120 is tightly screwed to the filter housing 105 via the helical guiding means 104,130.
  • a blocking element 147 see figure 1 1 , is urged in a direction upwards, away from its associated seat 149 via a spring means 151 .
  • the blocking element 147 is pressed tightly against the seat 149 while compressing the spring means 151 .
  • the seat 149 may be incorporated in the filter housing wall or may be inserted as a separate part matching the blocking element.
  • the actuating member 1 19 as part of the lower front panel of the filter insert is also lifted and the blocking element 147 is thus lifted from the seat 149 on the drain outlet 145.
  • the drain outlet 145 is opened and the liquid located in the filter housing can flow off through the drain outlet, in the case of an oil filter, for example into the oil sump of a corresponding internal combustion engine.
  • a mostly liquid-free filter insert 100 can then be removed from the filter housing 105.
  • Fig. 12 is a partly cut, exploded view of the filter arrangement 3 according to the first embodiment example comprising the filter insert 100, lid 120 and filter housing 105 according to figures 2-1 1 .
  • Fig. 13 discloses the direction of fluid during operation of the filter arrangement. Further, an enlarged view shows that the helical guiding means 104 is attached to the filter material body via a layer 170 of fastening means, such as glue.
  • Fig. 15 discloses an alternative embodiment example of the filter insert 100 ' according to figures 4-5. Only the main differences in relation to the first embodiment example will be described below.
  • the helical filter insert guiding means 104 ' is partly non-continuous, or interrupted, in the direction of helical extension. It provides for a fluid flow across the helical filter insert guiding means 104 ' . More specifically, the helical filter insert guiding means 104 ' in the form of a rib has a plurality of spaced cut-outs 155. The cut-outs 155 5 faces the filter material body 102.
  • Fig. 16-17 discloses a second embodiment example of the filter insert 200 in similar views as in figures 4-5. Only the main differences in relation to the first embodiment example will be described below.
  • the filter insert 200 comprises a filter insert guiding means 204
  • the filter insert guiding means 204 is formed by a rail providing the elongated recess facing radially outwards.
  • the rail 204 forms a helically wound structure around the filter material body 202.
  • the rail 204 is attached to the edges of the pleats in a similar
  • Fig. 18 discloses the lid 120 according to figures 5-6 attached to the filter insert 200 according to the second embodiment example.
  • Fig. 19 discloses a filter housing 205 according to a second embodiment example in a similar view as in figure 10. Only the main differences in relation to the first embodiment example will be described below.
  • the filter housing 205 comprises a helical filter insert guiding means 230 in the form of a helically extending rib or ridge provided on an inner wall 228 of the filter housing.
  • the rib 230 projects radially inwards from the inner wall 228.
  • the filter insert guiding means 230 is adapted to match the design of the helical guiding means 204 of the filter insert 200 for a close engagement allowing sliding of the filter insert guiding means 204 along the guiding means 230 of the filter housing 205. More specifically, the filter insert guiding means 230 is adapted with regard to cross section shape and size to match the design of the helical guiding means 204 of the filter insert
  • Fig. 20 shows a cross section view of the filter arrangement according to a second embodiment example comprising the filter insert 200, filter housing 205 and lid 120.
  • Fig. 21 is an exploded view of the filter arrangement according to the second embodiment 35 example.
  • Fig. 22 discloses an alternative embodiment of the filter housing 205 ' according to the second embodiment example. Only the main differences in relation to the second embodiment example will be described below.
  • the helical filter insert guiding means 230 ' is partly non-continuous, or interrupted, in the direction of helical extension. It provides for a fluid flow across the helical filter insert guiding means 204 ' . More specifically, the helical filter insert guiding means 204 ' has a plurality of spaced cut-outs 255.
  • FIG. 23-24 discloses a third embodiment example of a filter insert 300 in similar view as in figures 4-5. Only the main differences in relation to the first embodiment example will be described below.
  • the filter insert 300 comprises a guiding means 304 arranged at an inner circumference of the hollow filter material body 302 for guiding the filter insert during insertion into a filter housing 305, see figure 26.
  • the filter insert guiding means 304 is helical and extends about two complete turns inside of the filter material body 302.
  • the filter material body 302 is exposed in a radial direction of the filter insert 300 between consecutive turns of the filter insert guiding means 304.
  • the helical filter insert guiding means 304 is formed by an elongated helical member.
  • the filter insert 300 further comprises a fluid permeable central tube 360, in the form of a grid, see exploded view in figure 25, which is rigidly attached at its ends to the upper and lower panel, 308 and 310, respectively.
  • a fluid permeable central tube 360 in the form of a grid, see exploded view in figure 25, which is rigidly attached at its ends to the upper and lower panel, 308 and 310, respectively.
  • the filter material body 302 is exposed in a radial direction of the filter insert 300 on each side of the elongated helical member 304 via through holes in the fluid permeable central tube 360.
  • Fig. 26 discloses a third embodiment example of a filter housing 305. Only the main differences in relation to the first embodiment example will be described below.
  • the filter housing 305 comprises a fluid permeable tubular central post 343 for being received in the central opening in the filter insert 300 for supporting the filter insert 300.
  • the central post 343 is grid-shaped.
  • the filter insert support structure 343 comprises a helical filter insert guiding means 330 in the form of a helically extending recess or groove.
  • the filter insert guiding means 330 is adapted to match the design of the helical guiding means 304 of the filter insert 300 for a close engagement allowing sliding of the filter insert guiding means 304 along the guiding means 330 of the filter housing 305.
  • the filter insert guiding means 330 is adapted with regard to cross section shape and size to match the design of the helical guiding means 304 of the filter insert 300.
  • the through holes in the fluid permeable central tube 360 are preferably matched with the through holes in the central post 143 so that they overlap.
  • Fig. 27 discloses a filter arrangement according to a third embodiment example in a cross section view comprising the filter insert 300, the filter housing 305 and the lid 120.
  • Fig. 28 discloses the filter arrangement according to the third embodiment example in an exploded view.
  • Fig. 29-30 discloses a fourth embodiment example of the filter insert 400 in similar views as in figures 4-5. Only the main differences in relation to the first embodiment example will be described below.
  • the filter insert 400 comprises a guiding means 404 arranged at an inner circumference of the hollow filter material body for guiding the filter insert during insertion into a filter housing 405, see figure 32.
  • the filter insert guiding means 404 is helical and extends about two complete turns inside of the filter material body 402.
  • the filter material body 402 is exposed in a radial direction of the filter insert 400 between consecutive turns of the filter insert guiding means 404.
  • the helical filter insert guiding means 304 is formed by an elongated recess or groove. Thus, the filter material body 402 is exposed in a radial direction of the filter insert 400 on each side of the elongated helical member 404.
  • the filter insert 400 further comprises a fluid permeable central tube 460, in the form of a grid, see exploded view in figure 31 , which is rigidly attached at its ends to the upper and lower panel, 408 and 410, respectively.
  • the helical guiding means 304 is formed integral with the central tube 460.
  • Fig. 32 discloses a fourth embodiment example of a filter housing 405.
  • the filter housing 405 comprises a fluid permeable tubular central post 443 for being received in the central opening in the filter insert 400 for supporting the filter insert 400.
  • the central post 443 is grid-shaped.
  • the filter insert support structure 443 comprises a helical filter insert guiding means 430 in the form of a helically extending projection or rib.
  • the filter insert guiding means 430 is adapted to match the design of the helical guiding means 404 of the filter insert 400 for a close engagement allowing sliding of the filter insert guiding means 404 along the guiding means 430 of the filter housing 405. More specifically, the filter insert guiding means 430 is adapted with regard to cross section shape and size to match the design of the helical guiding means 404 of the filter insert 400.
  • Fig. 33 discloses a filter arrangement according to a third embodiment example in a cross section view comprising the filter insert 400, the filter housing 405 and the lid 120.
  • Fig. 34-35 disclose a fifth embodiment example of the filter insert 500 in a perspective view from above and below, respectively. Only the main differences in relation to the first embodiment example will be described below.
  • the filter insert 500 has the external shape of a truncated cone. More specifically, the filter material body 502 has the external shape of a truncated cone.
  • An upper end panel 508 has a greater dimension than a lower end panel 510. More specifically, the upper end panel 508 and the lower end panel 510 has a circular shape, wherein the upper end panel 508 has a greater radius than the lower end panel 510.
  • the filter insert 500 comprises a filter insert guiding means 504 formed by at least one recess exposed in a radial direction of the filter material body 502.
  • the recess is elongated and formed by a groove.
  • the filter insert guiding means 504 is formed by a rail providing the elongated recess facing radially outwards.
  • the rail 504 forms a helically wound structure around the filter material body 202.
  • a radially inner surface of the rail 504 is in contact with the filter material body 202
  • the rail 504 is attached to the edges of the pleats in a similar manner as has been disclosed above for the rib according to the first embodiment.
  • Fig. 36 discloses a fifth embodiment example of the filter housing in a perspective, partly cut view from above.
  • the filter housing 505 has a cylindrical inner wall 528 with a circular cross section.
  • the diameter of the circular cylindrical wall 528 is matched to the diameter of the filter material body 502 establishing a gap between them.
  • the inner wall 528 has the shape of a truncated cone.
  • a helical filter insert guiding means 530 in the form of a helically extending rib is provided in the inner wall 528.
  • the filter insert guiding means 530 is adapted to match the design of the helical guiding means 504 of the filter insert 500 for a close engagement allowing sliding of the filter insert guiding means 504 along the guiding means 530 of the filter housing 505.
  • the filter insert guiding means 530 is adapted with regard to cross section shape and size to match the design of the helical guiding means 504 of the filter insert 500.
  • Fig. 37 discloses insertion of the filter insert according to figures 34-35 provided with a lid according to figures 7-8 in a housing according to figure 36.
  • This insertion differs from the previously described embodiments due to the external shape of the filter insert 500 and the complimentary internal shape of the housing 505. More specifically, due to the shape of a truncated cone, the filter insert 500 may be axially inserted, see straight arrow, into the filter housing 505 without being turned to an intermediate position, which is defined by that the filter insert guiding means 504,530 contact. Thus, the filter insert is partly positioned inside of the housing in the intermediate position.
  • the filter arrangement is adapted so that at least half the longitudinal length of the filter insert, and especially at least 3 ⁇ 4 of the longitudinal length of the filter insert is positioned inside of the housing in the intermediate position. More specifically, the filter arrangement may be designed so that the helical rail 504 contacts the helical rib 530 simultaneously over a significant portion of their length. From the intermediate position, the filter insert 500 is turned, see the bent arrow, wherein the filter insert guiding means 504,530 engage and are in engagement with each other during the consecutive turning motion. The filter arrangement may be designed so that the filter insert 500 is only turned one complete turn, or possibly less than a complete turn, such as 3 ⁇ 4 turn, for a complete attachment of the filter insert 500 in the housing 505 and blocking of the drainage means in the filter housing.
  • the filter material body support structure at one end of the filter insert projects radially outwards from the filter material body forming a lid for closing the filter housing.
  • the lid for closing the filter housing would be formed in one piece with the filter insert in a non-removable way. In an exchange of a used filter insert, the lid would be scraped together with the filter insert.
  • the sealing between the filter insert and the lid and the housing, respectively may be realized in different ways, such as in the form of a radial sealing, or an axial sealing.
  • the filter insert may comprise a filter insert guiding means formed by at least one recess projecting radially from the circumference of the filter material body and into the filter material body.
  • the filter material body may be formed by a helical recess, which receives a correspondingly shaped rail.
  • the paper may be formed with cut-outs distributed in such a manner that they define the helical recess.

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  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • Filtration Of Liquid (AREA)

Abstract

The invention relates to a filter insert (100) for being removably arranged in a filter housing comprising a filter material body (102), a guiding means (104) arranged at a circumference of the filter material body for guiding the filter insert during insertion into the filter housing, wherein the filter insert guiding means (104) is helical and extends at least a complete turn.

Description

A filter insert and a filter arrangement
TECHNICAL FIELD
The invention relates to a filter insert and a filter arrangement for cleaning a fluid. More specifically, the filter insert and filter arrangement are adapted for cleaning a fluid for an internal combustion engine, wherein the fluid may be a liquid such as a lubricating oil or fuel or a gas such as air. Such filters may be provided onboard vehicles and in other applications containing transport systems to remove unwanted solids or other contaminants from the fluid. The filter insert may be called filter cartridge or filter module. The filter arrangement comprises a filter housing, which may be non-removably attached to the internal combustion engine. The filter housing is cup-shaped with an upper open, access end for receipt of the filter insert. The filter housing encompasses at least one inlet for raw fluid to be filtered, which empties into a raw side of the filter housing, and an outlet, which starts at a clean side of the filter housing, for filtered clean fluid. The inlet and outlet are provided in a lower portion of the filter housing. The filter housing defines a longitudinal axis, along which the filter insert can be inserted into the filter housing and removed from it. The filter arrangement further comprises a removable lid for closing the open end of the filter housing during operation. The lid may also be called cover or cap. The invention can be applied in an internal combustion engine, such as a diesel engine, for heavy-duty vehicles, such as trucks, buses and construction equipment. Although the invention will be described with respect to a diesel engine for a truck, the invention is not restricted to this particular application, but may also be used in other types of engines and for other types of vehicles, such as passenger cars.
PRIOR ART
US2012/0267293 discloses a liquid filter including a filter housing, a ring filter insert and a cover. The housing bottom contains an outlet for emptying the housing when the filter insert is removed. The filter insert includes a filter material body surrounded by front panels. A blocking element for the outlet is arranged on one front panel, and positioning elements are provided on the filter insert and on the housing. The positioning elements include an inclined plane and an engaging radially protruding nose. The inclined plane is arranged on one and the nose is arranged on the other of the filter housing part and the ring filter insert. When the ring filter insert is rotated relative to the filter housing, the inclined plane and the nose are moved in relation to each other such that they slide along each other and engage the blocking element with the outlet. More specifically, the inclined plane is formed by two partial planes, which run towards each other in opposite direction and which in each case extend across half of the inner or outer circumference of the ring filter insert or half of the inner circumference of the filter housing or half of the outer circumference of the filter housing part arranged inside the ring filter insert. The two partial planes run towards each other and merge into an axial guide for the nose for an axial guide of the blocking element into its corresponding seat.
SUMMARY
An object of the invention is to provide a filter insert, which creates conditions for a reliable positioning of the filter insert in the filter housing. The object is achieved by a filter insert according to claim 1 . Thus, it is achieved by a filter insert for being removably arranged in a filter housing, wherein the filter insert comprises a filter material body, a guiding means arranged at a circumference of the filter material body for guiding the filter insert during movement relative to the filter housing, characterized in that the filter insert guiding means is helical and extends at least a complete turn.
The filter material body preferably has a cylindrical shape. The term "cylindrical shape" defines a volume enclosed by two planes perpendicular to an axis extending in an axial direction of the filter insert. The cross section of the cylinder at right angles to the axis is preferably circular forming a right circular cylinder. According to one variant, the filter material body may have the shape of a truncated cone. The filter material body may be hollow-cylindrical and formed by a pleated structure. However, the filter material body may alternatively be non-cylindrical, for example the volume may not be defined by two planes perpendicular to an axis. The axially limiting portions of the filter material body may be planes, but at least one of them may be non-perpendicular in relation to said axis. Further, at least one of the axially limiting portions of the filter material body may have a shape deviating from a straight plane, such as curved. The term "circumference" is defined as a circumferential surface of the filter insert. The circumferential surface may be continuous in a circumferential direction or, as in the example of the pleated structure, be non-continuous in the circumferential direction. The filter insert guiding means is preferably adapted to position the filter insert in a correct operational position in the filter housing. The term "helical" defines a structure in the form of a helix. According to one example, the tangent line at any point along the extension of the helical guiding means makes a constant angle with a central axis of the filter insert. The filter insert guiding means extends at least a complete turn of the inner or outer circumference of the filter material body. In the case of a complete turn of the outer circumference of the filter insert, the helical guiding means completely surrounds the filter material body in the circumferential direction. In other words, the helical guiding means encloses the filter material body. In the case of a complete turn of the inner circumference of the filter insert, the filter material body is hollow and the helical guiding means extends inside of it and makes a complete turn.
The filter insert guiding means is adapted to engage a corresponding guiding means in an inner peripheral wall of the filter housing, and preferably a correspondingly shaped helical guiding means in the inner peripheral wall of the filter housing. When the filter insert is inserted into the filter housing, the helical guiding means of the filter insert and the corresponding guiding means of filter housing will engage and be moved in relation to each other such that they slide along each other thereby controlling a rotational movement of the filter insert at least one turn in relation to the filter housing.
Further, by arranging the guiding means on opposite inner and outer circumferences of the filter insert on the one hand and of the filter housing on the other hand create conditions for a space-efficient design with regard to the overall size of the filter arrangement. In addition, the guiding means can be embodied with a very small overall size, viewed in radial direction, so that an increase of the diameter of the filter housing or a reduction of the diameter of the filter insert also does not become necessary to accommodate the guiding means.
Further, the provision of such a filter insert creates conditions for the connection between the lid and the filter housing to be free of any threads or other engagement means. Thus, the helical guiding means of the filter insert may be the only means for attachment of the lid to the filter housing. More specifically, the helical guiding means may be designed such that the lid is tightly screwed to the filter housing via the helical guiding means. It creates conditions for a cost-efficient design in that only one guiding means is required.
Further, the filter insert design creates conditions for a controlled and quick insertion of the filter insert towards its operational position in the filter housing. Likewise, the filter insert design creates conditions for a controlled and quick withdrawal of the filter insert from its operational position in the filter housing. The facilitated insertion/withdrawal of the filter insert is especially pronounced if the helical filter insert guiding means has a pitch substantially larger than a conventional thread pitch between the lid and the filter housing.
Preferably, the external surface of the helical guiding means has a symmetrical cross section with regard to a center plane in the extension direction of the guiding means. Thus, the cross section is symmetrical in a direction perpendicular to the extension direction of the guiding means. The guiding means has a first surface section on a first side of the center plane, which is arranged for contacting a corresponding guiding surface of the filter housing wall when the filter insert is moved in a first direction (insertion direction) and has a second surface section on a second side of the center plane, which is arranged for contacting a corresponding guiding surface of the filter housing wall when the filter insert is moved in a second direction (withdrawal direction). Thus, the shape of first and second surface sections are mirrored in the center plane.
According to one embodiment, the filter insert guiding means extends at least two complete turns. This creates conditions for an improved control of the movement of the filter insert relative to the filter housing and a more reliable positioning of the filter insert in the filter housing. Further preferably, the filter insert guiding means extends less than five complete turns and especially less than four complete turns. By limiting the number of turns to about 2-3 of the helical filter insert guiding means, the filter insert exchange will be quick while still ensuring a robust positioning of the filter insert.
According to a further embodiment, the filter material body is exposed in a radial direction of the filter insert beside the filter insert guiding means and especially between consecutive turns of the filter insert guiding means. Thus, the filter material body is exposed on different sides of the filter insert guiding means in an axial direction of the filter insert. In this way and by in addition arranging the filter insert guiding means with a relatively small extension in the axial direction, the complete radially exposed area of the filter material body is substantially not reduced and consequently the filtering function is substantially not impaired by the presence of the filter insert guiding means.
According to a further embodiment, the helical filter insert guiding means is formed by an elongated helical member, wherein the filter material body is exposed in a radial direction of the filter insert on each side of the elongated helical member. Thus, the filter material body is exposed on different sides of the filter insert guiding means in an axial direction of the filter insert. By using an elongated helical member extending in the helical extension direction and with a relatively small extension in the axial direction, the complete radially exposed area of the filter material body is substantially not reduced and consequently the filtering function is substantially not impaired by the presence of the filter insert guiding means.
According to a further embodiment, the filter insert guiding means forms a relatively rigid structure in a circumferential direction. It creates further conditions for a reliable insertion/withdrawal of the filter insert. Especially, the filter insert guiding means forms a relatively rigid structure relative to the rigidity of the filter material body.
According to a further embodiment, the filter insert guiding means extends over at least 50% of the filter insert extension in an axial direction of the filter insert. It creates further conditions for a reliable insertion/withdrawal of the filter insert. Especially, the filter insert guiding means extends over substantially the complete filter insert extension in an axial direction of the filter insert. It creates further conditions for a structurally rigid construction. Guiding support along its complete length relative to the filter housing inner wall secures a reliable movement and positioning of the filter insert.
According to a further embodiment, the filter insert guiding means is arranged in contact with the circumference of the filter material body for reinforcing the filter material body. In this way, a risk of collapsing of the filter material body is reduced, wherein the need for any further reinforcement of the filter material is reduced. Preferably, the filter insert guiding means is preferably rigidly attached to the filter material body at the circumference of the filter material body. For example, the filter insert guiding means is rigidly attached to the filter material body via glue or other fastening means. According to a further development of the last-mentioned embodiment, the filter material body is formed by a pleated structure and the filter insert guiding means is arranged to bridge a gap between two circumferentially spaced pleats in the pleated structure. In this way, a risk of collapsing of the filter material body is reduced, wherein the need for any further reinforcement of the filter material is reduced. Especially, the filter material body is formed by a pleated structure and the filter insert guiding means is arranged to bridge gaps between substantially all circumferentially spaced pleats in the pleated structure. For example, the filter insert guiding means is rigidly attached to circumferentially spaced pleats of the filter material body via glue or other fastening means.
According to a further embodiment, the helical filter insert guiding means is accessible in an axial direction of the filter insert for engagement with a corresponding guiding means in the filter housing. It creates conditions for a quick and easy alignment of the filter insert relative to the filter housing. Preferably, an end portion of the helical filter insert guiding means is accessible in an axial direction of the filter insert. Said end portion may be designed to project outwards from an envelope surface of the filter material body or alternatively project inwards from an envelope surface of the filter material body. Further preferably, an entrance portion of the guiding means of one of the filter insert and the filter housing may be designed with an increased width in an axial direction for securing receipt of a corresponding end portion of the guiding means of the other one of the filter insert and the filter housing so that the corresponding end portion of the guiding means is captured by the entrance portion during insertion of the filter insert into the filter housing. According to a further embodiment, the filter insert guiding means is continuous along its complete extension. It creates conditions for a good control of the insertion and withdrawal of the filter insert relative to the filter housing and also a proper positioning of the filter insert in its operational position in the filter housing. According to a further embodiment, the filter insert guiding means is formed by at least one projection projecting radially from the circumference of the filter material body. Preferably, the projection is elongated in the helical extension direction of the guiding means. Further preferably, the filter insert guiding means is formed by a projection in the form of a rib or ridge extending helically. Further preferably, the filter insert guiding means is formed by a single elongated projection extending helically. Preferably, the projection is attached to the filter material body.
Alternatively, the filter insert guiding means is formed by at least one recess, which is open/exposed in a radial direction of the filter material body. Preferably, the recess is elongated in the helical extension direction of the guiding means. The recess may be in the form of a groove. Preferably, the filter insert guiding means is formed by a rail defining the elongated recess and projecting radially from the circumference of the filter material body. Preferably, the rail is attached to the filter material body.
According to a further embodiment, the filter insert guiding means is provided on an outer circumference of the filter material body. Thus, the filter insert guiding means is provided on a radially outer surface of the filter material body. In other words, the filter insert guiding means is provided on a surface of the filter material body exposed radially outwards. This is especially advantageous in that the guiding means is provided on a maximum diameter creating conditions for a robust control of the movement of the filter insert relative to the filter housing. Further, it is advantageous in case the filter material body is in the form of a pleated circular cylindrical structure since the distances between adjacent pleats are the largest at the outer circumference and thereby a reinforcement of the filter material body is achieved.
According to an alternative embodiment, the filter material body is hollow and the filter insert guiding means is provided on an inner circumference of the filter material body. Thus, the filter insert guiding means is provided on a radially inner surface of the filter material body. In other words, the filter insert guiding means is provided on a surface of the filter material body exposed radially inwards. Such a design of the filter insert may be advantageous in that the guiding means may replace an internal grid-shaped support dome for reinforcing the filter material body arranged inside the filter material body. Alternatively, the helical guiding means may be easily integrally formed with or attached on such a grid-shaped support dome. Further, placing the guiding means on an inner surface of the filter material body is advantageous in that the guiding means will not interfere with the fluid flow in the outer gap between the filter insert and the housing.
According to a further embodiment, the filter insert comprises a member for actuating a drainage means in the filter housing and wherein the drainage means actuating member is eccentrically positioned at one end of the filter insert for actuating the drainage means when the filter insert is completely inserted into the filter housing via engagement between the helical guiding means of the filter insert and the filter housing. The drainage means actuating member may be formed by a projection acting on a blocking element for being received in a seat in the filter housing. The blocking element can be a radially or axially sealing valve element. The drainage means actuating member may be rigidly connected to a lower front panel of the filter insert.
According to a further embodiment, the filter insert comprises a filter material body support structure at at least one end of the filter insert in its axial direction, wherein the filter material body support structure has a main extension in a radial direction of the filter insert and wherein the filter insert guiding means is rigidly connected to the filter material body support structure. The filter material body support structure is preferably configured to give a rigid support to the filter insert. The filter material body support structure is preferably configured to be provided with sealing means for sealing the filter insert to the filter housing and lid, respectively. Preferably, the filter material body support structure has a plate shaped structure. The filter material body support structure may be termed a panel. The elongated helical member preferably extends all the way between the opposite panels and is preferably rigidly attached to the panels.
According to a further development of the last-mentioned embodiment, the filter insert comprises means for engagement with a lid, which is adapted for closing the filter housing. It creates conditions for a less messy filter insert exchange operation since the service operator may only contact the lid during withdrawal of the filter insert from the filter housing, especially if the lid engagement means is adapted for a connection between the lid and the filter insert guiding means allowing the filter insert and the lid to be interconnected for being moved in unison in relation to the filter housing. The lid engagement means may be formed by a tubular portion inside the filter material body, preferably with a central axis coinciding with a central axis of the filter insert. Further, preferably, the lid engagement means is rigidly attached to an upper one of the filter material body support structure at the axial end of the filter insert.
Further preferably, the lid engagement means is adapted for a rotationally rigid connection between the lid and the filter insert guiding means. It creates conditions for replacing a conventional thread of a screw lid of the filter housing with the filter insert guiding means. Especially, the lid engagement means is adapted for a rigid connection between the lid and the filter insert guiding means such that a turning movement of the lid towards and away from its operational position closing the filter housing is controlled by the engagement between the helical filter insert guiding means and corresponding guiding means in the filter housing.
According to a further aspect, the invention is related to a filter arrangement comprising
- a filter insert according to one of the embodiments above,
- a filter housing arranged for receiving the filter insert, wherein an inner peripheral wall of the filter housing is provided with a helical guiding means for engagement with the filter material body guiding means.
According to one embodiment, the helical filter insert guiding means is radially projecting from one of the filter material body and the filter housing inner peripheral wall and wherein the helical filter insert guiding means is radially recessed in the other one of the filter material body and the filter housing inner peripheral wall.
According to a further embodiment, the filter housing comprises a closed end and an opposite open end and wherein the filter arrangement further comprises
- a lid for closing the open end of the filter housing.
Further advantages and advantageous features of the invention are disclosed in the following description and in the dependent claims. BRIEF DESCRIPTION OF THE DRAWINGS
With reference to the appended drawings, below follows a more detailed description of embodiments of the invention cited as examples. In the drawings:
Fig. 1 discloses a vehicle in the form of a truck in a side view,
Fig. 2 discloses an internal combustion engine of the truck in a perspective view with a filter arrangement attached, Fig. 3 discloses the filter arrangement of figure 2 in a partly disassembled state,
Fig. 4 is a perspective view from the top of a filter insert according to a first embodiment example,
Fig. 5 is a perspective view from below of the filter insert according to the first embodiment example, Fig. 6 is an exploded view of the filter insert of figure 4-5,
Fig. 7 is a perspective view from the top of a lid according to a first embodiment example,
Fig. 8 is a perspective view from below of the lid according to the first embodiment example,
Fig.9 discloses the lid according to the first embodiment example attached to the filter insert according to the first embodiment example, Fig. 10 is a partially cut perspective view from the top of a filter housing according to a first embodiment example,
Fig. 1 1 is a further partially cut perspective view from the top of the filter housing according to figure 10,
Fig. 12 is an exploded view of a filter arrangement according to a first embodiment example comprising the filter insert, lid and filter housing according to figures 1 -8,
Fig. 13 is a partly cut cross sectional view of the filter arrangement according to figure 12,
Fig.14 is a partly cut perspective view of the filter arrangement according to figure 12,
Fig. 15 discloses an alternative embodiment example of the filter insert according to figures 4-5, Fig. 16-17 discloses a second embodiment example of the filter insert in similar view as in figures 4-5,
Fig. 18 discloses the lid according to figures 7-8 attached to the filter insert according to the second embodiment example,
Fig. 19 discloses a filter housing according to a second embodiment example in a similar view as in figure 10, Fig. 20 discloses the filter housing according to the second embodiment example in a similar view as in figure 13,
Fig. 21 is an exploded view of a filter arrangement according to a second embodiment example comprising the filter insert, lid and filter housing according to figures 16-20,
Fig. 22 discloses an alternative embodiment example of the filter housing according to figure 19,
Fig. 23-24 discloses a third embodiment example of the filter insert in similar view as in figures 4-5,
Fig. 25 is an exploded view of the filter insert of figure 23-24,
Fig. 26-27 discloses a third embodiment example of the filter housing in similar view as in figures 10 and 13,
Fig. 28 is an exploded view of the filter insert of figures 23-27,
Fig. 29-30 discloses a fourth embodiment example of the filter insert in similar view as in figures 4-5,
Fig. 31 is an exploded view of the filter insert of figure 29-30,
Fig. 32-33 discloses a fourth embodiment example of the filter housing in similar view as in figures 26-27, Fig. 34-35 discloses a fifth embodiment example of the filter insert in similar view as in figures 4-5,
Fig. 36 discloses a fifth embodiment example of the filter housing in similar view as in fig. 10, and
Fig.37 discloses insertion of the filter insert according to figures 34-35 provided with a lid according to figures 7-8 in a housing according to figure 36. DETAILED DESCRIPTION OF EXAMPLE EMBODIMENTS OF THE INVENTION
Fig. 1 discloses a vehicle in the form of a truck 1 in a partly cut side view. Further, an internal combustion engine (ICE) in the form of a diesel engine 2 for propelling the truck is indicated. Figure 2 shows the internal combustion engine 2 provided with a filter arrangement 3 according to a first embodiment of the invention. The filter arrangement 3 is adapted for filtering a fluid for the internal combustion engine. More specifically, there are three filter arrangements 3 arranged in parallel with each other. The filter arrangement 3 comprises a filter housing 105, which is non-removably attached to the internal combustion engine. The filter arrangement 3 is in an upright, standing position, slightly inclined outwards from its attachment at the bottom relative to a side of the ICE. A lower section of the filter arrangement comprises inlets and outlets. The filter housing 105 is in the form of a cup- shaped part, which is rigidly attached to the lower section. The filter housing 105 defines a longitudinal axis 107 along which a filter insert (not shown) can be inserted into the filter housing and removed from the filter housing. The filter arrangement 3 further comprises a lid 120 for closing the filter housing.
Fig. 3 discloses the filter arrangement 3 of figure 2 in a partly disassembled state. A filter insert 100 according to a first embodiment example is attached to the lid 120 for being inserted into the filter housing 105 via a rotational movement around the longitudinal axis 107.
Figure 4-5 shows the filter insert 100 from figure 3 for being removably arranged in the filter housing 105. The filter insert 100 comprises a filter material body 102. The filter material body 102 has a hollow circular cylindrical shape. Thus, the filter material body 102 has an external cross sectional shape generally defining a circle. Further, the filter material body 102 has an internal cross sectional shape generally defining a circle. Further, the filter material body 102 is formed by a pleated structure. More specifically, the filter material body 102 is formed by an elongated sheet of paper (strip), which has been 5 folded successively back and forth and configured to assume the cylindrical shape, for example via rolling. The cylindrical filter material body 102 has its axis parallel to the line of the pleatings.
The filter insert 100 further comprises a guiding means 104 arranged at a circumference 10 of the filter material body for guiding the filter insert during movement relative to the filter housing 105. The filter insert guiding means 104 is helical and extends about two complete turns around the filter material body 102. Thus, the filter insert guiding means 104 is provided on an outer circumference of the filter material body 102. The filter material body 102 is exposed in a radial direction of the filter insert 100 between 15 consecutive turns of the filter insert guiding means 104. The helical filter insert guiding means 104 is formed by an elongated helical member. Thus, the filter material body 102 is exposed in a radial direction of the filter insert 100 on each side of the elongated helical member 104.
20 The helical filter insert guiding means 104 extends over the complete filter insert extension in an axial direction 101 of the filter insert 100. The filter insert is arranged so that the axial direction 101 of the filter insert 100 will coincide with the longitudinal direction 107 of the filter housing 105 during insertion. Further, the filter insert guiding means 102 forms a relatively rigid structure in a circumferential direction. Further, the filter
25 insert guiding means 104 is arranged in contact with the circumference of the filter material body 102 for reinforcing the filter material body. More specifically, the filter insert guiding means 104 is arranged to bridge gaps between substantially all circumferentially spaced pleats in the pleated structure 102. Further, the helical filter insert guiding means 104 is accessible in an axial direction of the filter insert for engagement with a
30 corresponding guiding means in the filter housing, see figures 10-1 1 .
Further, the filter insert guiding means 104 is continuous along its complete extension. More specifically, the filter insert guiding means 104 is formed by at least one projection 106 projecting radially from the circumference of the filter material body. The projection 35 106 is formed by a rib or ridge attached to the pleat edges. The guiding means 104 is provided with a contact surface on both sides in the axial direction for contacting the corresponding guiding means of the filter housing on a first, upper side 109 during insertion and a second, lower side 1 1 1 during withdrawal. Thus, the 5 filter insert guiding means 104 is arranged for guiding the filter insert 100 during both insertion and withdrawal of the filter insert from the filter housing. The guiding means 104 has a rounded outer surface in cross section, especially in the shape of a half-circle in cross section, wherein the contact surfaces are rounded. The filter insert guiding means 104 may be configured for contacting the corresponding guiding means of the filter 10 housing simultaneously on both the upper side 109 and the lower side 1 1 1 during insertion and removal, respectively. According to an alternative, the guiding means may have a different cross section, wherein the contact surfaces are planar or substantially to planar.
15 The filter insert 100 further comprises a filter material body support structure 108,1 10 at each end of the filter insert in its axial direction. The filter material body support structures 108,1 10 have a main extension in a radial direction of the filter insert. Further, the filter insert guiding means 104 is rigidly connected at each end to the filter material body support structures 108,1 10, which implies a relatively rigid construction of the filter insert
20 100. Each of the filter material body support structures 108,1 10 has a plate shaped structure extending in a plane perpendicular to the axial direction of the filter insert. The filter material body support structures 108,1 10 will in the following be referred to as an upper and lower panel 108,1 10. Thus, the filter material body 102 is delimited on the top by the upper panel 108 and on the bottom by a lower panel 1 10. The panels 108,1 10 may
25 be formed by separate parts attached to the filter material body 102. The filter material body 102 is then bonded to the upper panel 108 and lower panel 1 10 at the edges of the filter paper in the axial direction of the filter insert. The panels 108,1 10 may be made of plastics and the filter material body 102 is connected to the panels by non-contact infrared bonding or other bonding processes, such as hot-plate bonding. Alternatively, the panels
30 108,1 10 are formed by a glue or other fastening fluid attached to the edges of the filter material body 102 in the axial direction of the filter insert and then solidifed.
The helical guiding means 104 is embodied integrally with the filter insert. Preferably, the helical guiding means 104 may be formed integrally with one of the end panels 108,1 10 of 35 the filter insert securing a rigid construction. Preferably, the helical guiding means 104 is attached to the filter material body circumference for reinforcement of the filter material body. In the alternative, it is also possible for the guiding means 104 to be made as a separate part and to be connected to the panels 108,1 10. Further, the helical guiding means 104 projects radially relative to the panels 108,1 10 seen in the axial direction.
The filter insert 100 further comprises sealing means 122,124 for sealingly engage an inner surface of the lid 120 and the filter housing 105, respectively, in order to separate a raw side from a clean side of the filtering arrangement. A first sealing means 122 in the form of a ring is provided on an external side of the upper panel 108 for a sealing engagement with the lid 120. A second sealing means 124 in the form of a ring is provided on an external side of the lower panel 1 10 for a sealing engagement with a bottom surface of the filter housing 105. Each of the sealing means 122,124 is arranged on a conical surface 125,127 and adapted to seal against a correspondingly shaped surface of the lid and the filter housing, respectively.
The filter insert 100 comprises means 1 12 for engagement with the lid 120, see also figures 7-8, which is adapted for closing the filter housing 105. The lid engagement means 1 12 is adapted for a rotationally rigid connection between the lid 120 and the filter insert guiding means 102. Further, the lid engagement means 1 12 is adapted for a connection between the lid 120 and the filter insert guiding means 102 allowing the filter insert 100 and the lid 120 to be interconnected for being moved in unison in relation to the filter housing 105. Thus, the filter insert guiding means 102 is arranged to be removably attached to the lid in such a manner that the lid 120 can be gripped, rotated and then lifted from the filter housing 105 while the filter insert is moved in unison with the lid. More specifically, the lid engagement means 1 12 is adapted for a rigid connection between the lid 120 and the filter insert guiding means 102 such that a turning movement of the lid towards and away from its operational position closing the filter housing 105 is controlled by the engagement between the helical filter insert guiding means 104 and corresponding guiding means 130 in the filter housing 105.
The lid engagement means 1 12 is adapted for a rotationally rigid connection between the lid 120 and the upper panel 108. The lid engagement means 1 12 is formed by a tubular structure 1 14 arranged inside of the filter material body 102. The tubular structure 1 14 is formed in a one-piece unit with the upper panel 108. Further, the tubular structure 1 14 has a slightly cone-shaped portion for a facilitated engagement with the lid. Further, the tubular structure 1 14 has a plurality of circumferentially spaced snap means 1 16a,b in the form of openings for a snap connection with the lid 120.
Further, the filter insert comprises a member or blocking element 1 19 for actuating a drainage means 138 in the filter housing 105. The drainage means actuating member 1 19 projects axially from the lower panel 1 10 and is eccentrically positioned for actuating the drainage means 138 when the filter insert 100 is completely inserted into the filter housing 105 via engagement between the helical guiding means 104 of the filter insert 100 and the filter housing 105. The drainage member 1 19 comprises a section 140 formed by a ramp, which extends in a circumferential direction of the filter insert, wherein a corresponding portion of the drainage means 138 in the filter housing 105 is adapted to ride along the ramp during a rotational movement of the filter insert 100 relative to the filter housing 105.
Fig. 6 is an exploded view of the filter insert of figure 4-5.
Figure 7-8 shows a lid 120 according to a first embodiment example for being removably attached to the filter housing 105. The lid 120 comprises a plate shaped portion 122, snap means 124 projecting from a first, lower side of the plate shaped portion 122, for attachment to the filter insert, and engagement means 126 arranged on a second, upper side of the plate shaped portion 122, for engagement with a tool during insertion and removal of the filter insert. The plate shaped portion 122, snap means 124 and engagement means 126 are preferably formed in a one-piece unit.
The engagement means 126 has a peripheral polygonal shape for engagement with a correspondingly designed removal tool. The engagement means 126 is here in the form of an axial projection. According to an alternative, the engagement means may be formed by an axial projection.
The snap means 124 is formed by a plurality of circumferentially spaced fingers projecting from the plate shaped portion 122. In the example show, the snap means 124 comprises four fingers. Each finger forms a hook and comprises a first, substantially straight portion, extending in parallel with an axis of the lid and a second radially projecting portion extending from a free end of the straight portion. The fingers are radially elastic for riding along an inside surface of the tubular portion 1 14 in a compressed state before reaching its associated opening 1 16 and then radially flex into the opening. The filter insert 100 is in this way locked on its upper front panel to the lid via the snap-lock means 124, so that the removal of the lid from the housing automatically leads to a removal of the filter insert from the housing. The lid 120 further comprises a part 129 projecting from the first, lower side of the plate shaped portion 122, which part 129 has a surface adapted for sealing engagement with a corresponding surface of the filter insert. The part 129 has the shape of a truncated cone, wherein the sealing surface is inclined in relation to a rotational axis of the lid. The sealing part 129 is provided between the plate shaped portion 122 and the snap means 124. Further, the sealing part 129 forms a one-piece unit with the plate shaped portion 122 and the snap means 124. The snap means 1 16,124 projects from a lower portion of the sealing part 129.
The lid 120 may as a complement, or alternative, to the engagement means 126 comprise a handle at a second side of the lid, opposite the snap means 124 for manual operation of the lid by a service technician during a filter insert insertion/withdrawal/exchange. Such a handle may be formed in a one-piece unit with the plate shaped portion 122.
Fig.9 discloses the lid 120 according to the first embodiment example attached to the filter insert 100 according to the first embodiment example. A turning movement of the lid towards and away from its operational position closing the filter housing is controlled by the engagement between the helical filter insert guiding means 104 and the corresponding filter housing guiding means 130. In a filter insert exchange procedure, the used filter insert 100 would be removed from the filter housing 105 together with the lid 120 when the lid 120 is unscrewed from the housing. The lid 120 is then detached from the used filter insert 100, the used filter insert scrapped and the lid 120 attached to a new filter insert for insertion into the filter housing 105.
Fig. 10 is a partially cut perspective view from the top of the filter housing 105 according to a first embodiment example. The filter housing 105 has a cylindrical inner wall 128 with a circular cross section. The diameter of the circular cylindrical wall 128 is matched to the diameter of the filter material body 102 establishing a gap between them. Further, a helical filter insert guiding means 130 in the form of a helically extending recess or groove is provided in the inner wall 128. The filter insert guiding means 130 is adapted to match the design of the helical guiding means 104 of the filter insert 100 for a close engagement allowing sliding of the filter insert guiding means 104 along the guiding means 130 of the filter housing 105. More specifically, the filter insert guiding means 130 is adapted with regard to cross section shape and size to match the design of the helical guiding means 104 of the filter insert 100.
The filter housing 105 has a cone-shaped upstanding, central tubular portion 131 for receipt in the opening of the filter insert at a lower portion thereof. The cone-shaped tubular portion 131 is arranged to guide the filter insert to its correct operational position. Further, the sealing means is realized between the cone-shaped tubular portion 131 and the sealing 124 of the filter insert. The filter housing 105 further comprises a fluid permeable tubular central post 143 for being received in the central opening in the filter insert 100. The central post 143 is grid-shaped.
During insertion of the filter insert 100 into the housing 105, the filter insert is first moved so that an end portion of the guiding means 104 adjacent the second end panel 1 10 engages an end portion of the guiding means 130 adjacent an access opening of the filter housing 105. The filter insert 100 is thereafter screwed down into the filter housing towards its operational position during an increasing engagement of the guiding means. The filter housing 105 comprises an inlet 132 for receipt of a raw fluid to be filtered, which empties into a raw side of the filter housing, and an outlet or return 134, which starts at a clean side of the filter housing, for filtered clean fluid. The inlet 132 and outlet 134 are provided in a lower region 136 of the filter housing 105. The inlet 132 and outlet 134 are in communication with different sides of the filter material body 102. More specifically, the outlet 134 is provided in a bottom wall 138 of the filter housing and positioned radially centrally and adapted to match the position of the central opening in the fluid permeable central post 143. The outlet 134 is thus fluid communication with an interior side of the fluid permeable tubular central post 143. Further, the inlet 132 is positioned radially eccentric in the bottom wall 138 of the filter housing for distributing the fluid to a radially external side of the filter material body 102. The direction of the fluid inside the filter arrangement is disclosed in figure 13. By flowing through the filter material body 102, the liquid flows to the clean side of the filter housing (the radially interior space) while dirt particles are retained in the filter material body 102. The filtered liquid flows off through the outlet (return) 134. Further, the filter housing 105 comprises the drainage means 138, see figures 10-14, in the form of a drainage valve in the lower region 136 of the filter housing 105 and specifically in the bottom wall 138 of the filter housing 105. The drainage means 138 is positioned radially eccentric in the bottom wall 138 of the filter housing and adapted to receive the drainage means actuating member 1 19 for blocking the valve. The filter housing 105 furthermore has a drain outlet 145, through which an emptying of the filter housing is carried out in response to a replacement of the filter insert. During operation of the filter, the lid 120 is tightly screwed to the filter housing 105 via the helical guiding means 104,130. A blocking element 147, see figure 1 1 , is urged in a direction upwards, away from its associated seat 149 via a spring means 151 . When the lid 120 is tightly screwed to the filter housing 105, the blocking element 147 is pressed tightly against the seat 149 while compressing the spring means 151 . The seat 149 may be incorporated in the filter housing wall or may be inserted as a separate part matching the blocking element.
During removal of the filter insert 100 from the filter housing 105, due to the engagement between the lid 120 and the filter insert 100, the actuating member 1 19 as part of the lower front panel of the filter insert is also lifted and the blocking element 147 is thus lifted from the seat 149 on the drain outlet 145. In this manner, the drain outlet 145 is opened and the liquid located in the filter housing can flow off through the drain outlet, in the case of an oil filter, for example into the oil sump of a corresponding internal combustion engine. A mostly liquid-free filter insert 100 can then be removed from the filter housing 105.
Fig. 12 is a partly cut, exploded view of the filter arrangement 3 according to the first embodiment example comprising the filter insert 100, lid 120 and filter housing 105 according to figures 2-1 1 . Fig. 13 discloses the direction of fluid during operation of the filter arrangement. Further, an enlarged view shows that the helical guiding means 104 is attached to the filter material body via a layer 170 of fastening means, such as glue.
Fig. 15 discloses an alternative embodiment example of the filter insert 100' according to figures 4-5. Only the main differences in relation to the first embodiment example will be described below. The helical filter insert guiding means 104' is partly non-continuous, or interrupted, in the direction of helical extension. It provides for a fluid flow across the helical filter insert guiding means 104'. More specifically, the helical filter insert guiding means 104' in the form of a rib has a plurality of spaced cut-outs 155. The cut-outs 155 5 faces the filter material body 102.
Fig. 16-17 discloses a second embodiment example of the filter insert 200 in similar views as in figures 4-5. Only the main differences in relation to the first embodiment example will be described below. The filter insert 200 comprises a filter insert guiding means 204
10 formed by at least one recess exposed in a radial direction from the circumference of the filter material body 202. The recess is elongated and formed by a groove. More specifically, the filter insert guiding means 204 is formed by a rail providing the elongated recess facing radially outwards. The rail 204 forms a helically wound structure around the filter material body 202. The rail 204 is attached to the edges of the pleats in a similar
15 manner as has been disclosed above for the rib according to the first embodiment.
Fig. 18 discloses the lid 120 according to figures 5-6 attached to the filter insert 200 according to the second embodiment example.
20 Fig. 19 discloses a filter housing 205 according to a second embodiment example in a similar view as in figure 10. Only the main differences in relation to the first embodiment example will be described below. The filter housing 205 comprises a helical filter insert guiding means 230 in the form of a helically extending rib or ridge provided on an inner wall 228 of the filter housing. The rib 230 projects radially inwards from the inner wall 228.
25 The filter insert guiding means 230 is adapted to match the design of the helical guiding means 204 of the filter insert 200 for a close engagement allowing sliding of the filter insert guiding means 204 along the guiding means 230 of the filter housing 205. More specifically, the filter insert guiding means 230 is adapted with regard to cross section shape and size to match the design of the helical guiding means 204 of the filter insert
30 200.
Fig. 20 shows a cross section view of the filter arrangement according to a second embodiment example comprising the filter insert 200, filter housing 205 and lid 120. Fig. 21 is an exploded view of the filter arrangement according to the second embodiment 35 example. Fig. 22 discloses an alternative embodiment of the filter housing 205' according to the second embodiment example. Only the main differences in relation to the second embodiment example will be described below. The helical filter insert guiding means 230' is partly non-continuous, or interrupted, in the direction of helical extension. It provides for a fluid flow across the helical filter insert guiding means 204'. More specifically, the helical filter insert guiding means 204' has a plurality of spaced cut-outs 255. The cut-outs 255 faces the interior of the filter housing. Fig. 23-24 discloses a third embodiment example of a filter insert 300 in similar view as in figures 4-5. Only the main differences in relation to the first embodiment example will be described below. The filter insert 300 comprises a guiding means 304 arranged at an inner circumference of the hollow filter material body 302 for guiding the filter insert during insertion into a filter housing 305, see figure 26. The filter insert guiding means 304 is helical and extends about two complete turns inside of the filter material body 302. The filter material body 302 is exposed in a radial direction of the filter insert 300 between consecutive turns of the filter insert guiding means 304. The helical filter insert guiding means 304 is formed by an elongated helical member. Thus, the filter material body 302 is exposed in a radial direction of the filter insert 300 on each side of the elongated helical member 304. The filter insert 300 further comprises a fluid permeable central tube 360, in the form of a grid, see exploded view in figure 25, which is rigidly attached at its ends to the upper and lower panel, 308 and 310, respectively. Thus, the filter material body 302 is exposed in a radial direction of the filter insert 300 on each side of the elongated helical member 304 via through holes in the fluid permeable central tube 360.
Fig. 26 discloses a third embodiment example of a filter housing 305. Only the main differences in relation to the first embodiment example will be described below. The filter housing 305 comprises a fluid permeable tubular central post 343 for being received in the central opening in the filter insert 300 for supporting the filter insert 300. The central post 343 is grid-shaped. The filter insert support structure 343 comprises a helical filter insert guiding means 330 in the form of a helically extending recess or groove. The filter insert guiding means 330 is adapted to match the design of the helical guiding means 304 of the filter insert 300 for a close engagement allowing sliding of the filter insert guiding means 304 along the guiding means 330 of the filter housing 305. More specifically, the filter insert guiding means 330 is adapted with regard to cross section shape and size to match the design of the helical guiding means 304 of the filter insert 300. The through holes in the fluid permeable central tube 360 are preferably matched with the through holes in the central post 143 so that they overlap. Fig. 27 discloses a filter arrangement according to a third embodiment example in a cross section view comprising the filter insert 300, the filter housing 305 and the lid 120. Fig. 28 discloses the filter arrangement according to the third embodiment example in an exploded view. Fig. 29-30 discloses a fourth embodiment example of the filter insert 400 in similar views as in figures 4-5. Only the main differences in relation to the first embodiment example will be described below. The filter insert 400 comprises a guiding means 404 arranged at an inner circumference of the hollow filter material body for guiding the filter insert during insertion into a filter housing 405, see figure 32. The filter insert guiding means 404 is helical and extends about two complete turns inside of the filter material body 402. The filter material body 402 is exposed in a radial direction of the filter insert 400 between consecutive turns of the filter insert guiding means 404. The helical filter insert guiding means 304 is formed by an elongated recess or groove. Thus, the filter material body 402 is exposed in a radial direction of the filter insert 400 on each side of the elongated helical member 404. The filter insert 400 further comprises a fluid permeable central tube 460, in the form of a grid, see exploded view in figure 31 , which is rigidly attached at its ends to the upper and lower panel, 408 and 410, respectively. The helical guiding means 304 is formed integral with the central tube 460. Fig. 32 discloses a fourth embodiment example of a filter housing 405. The filter housing 405 comprises a fluid permeable tubular central post 443 for being received in the central opening in the filter insert 400 for supporting the filter insert 400. The central post 443 is grid-shaped. The filter insert support structure 443 comprises a helical filter insert guiding means 430 in the form of a helically extending projection or rib. The filter insert guiding means 430 is adapted to match the design of the helical guiding means 404 of the filter insert 400 for a close engagement allowing sliding of the filter insert guiding means 404 along the guiding means 430 of the filter housing 405. More specifically, the filter insert guiding means 430 is adapted with regard to cross section shape and size to match the design of the helical guiding means 404 of the filter insert 400. Fig. 33 discloses a filter arrangement according to a third embodiment example in a cross section view comprising the filter insert 400, the filter housing 405 and the lid 120.
Fig. 34-35 disclose a fifth embodiment example of the filter insert 500 in a perspective view from above and below, respectively. Only the main differences in relation to the first embodiment example will be described below. The filter insert 500 has the external shape of a truncated cone. More specifically, the filter material body 502 has the external shape of a truncated cone. An upper end panel 508 has a greater dimension than a lower end panel 510. More specifically, the upper end panel 508 and the lower end panel 510 has a circular shape, wherein the upper end panel 508 has a greater radius than the lower end panel 510.
Further, the filter insert 500 comprises a filter insert guiding means 504 formed by at least one recess exposed in a radial direction of the filter material body 502. The recess is elongated and formed by a groove. More specifically, the filter insert guiding means 504 is formed by a rail providing the elongated recess facing radially outwards. The rail 504 forms a helically wound structure around the filter material body 202. A radially inner surface of the rail 504 is in contact with the filter material body 202 The rail 504 is attached to the edges of the pleats in a similar manner as has been disclosed above for the rib according to the first embodiment.
Fig. 36 discloses a fifth embodiment example of the filter housing in a perspective, partly cut view from above. The filter housing 505 has a cylindrical inner wall 528 with a circular cross section. The diameter of the circular cylindrical wall 528 is matched to the diameter of the filter material body 502 establishing a gap between them. The inner wall 528 has the shape of a truncated cone. Further, a helical filter insert guiding means 530 in the form of a helically extending rib is provided in the inner wall 528. The filter insert guiding means 530 is adapted to match the design of the helical guiding means 504 of the filter insert 500 for a close engagement allowing sliding of the filter insert guiding means 504 along the guiding means 530 of the filter housing 505. More specifically, the filter insert guiding means 530 is adapted with regard to cross section shape and size to match the design of the helical guiding means 504 of the filter insert 500.
Fig. 37 discloses insertion of the filter insert according to figures 34-35 provided with a lid according to figures 7-8 in a housing according to figure 36. This insertion differs from the previously described embodiments due to the external shape of the filter insert 500 and the complimentary internal shape of the housing 505. More specifically, due to the shape of a truncated cone, the filter insert 500 may be axially inserted, see straight arrow, into the filter housing 505 without being turned to an intermediate position, which is defined by that the filter insert guiding means 504,530 contact. Thus, the filter insert is partly positioned inside of the housing in the intermediate position. More specifically, the filter arrangement is adapted so that at least half the longitudinal length of the filter insert, and especially at least ¾ of the longitudinal length of the filter insert is positioned inside of the housing in the intermediate position. More specifically, the filter arrangement may be designed so that the helical rail 504 contacts the helical rib 530 simultaneously over a significant portion of their length. From the intermediate position, the filter insert 500 is turned, see the bent arrow, wherein the filter insert guiding means 504,530 engage and are in engagement with each other during the consecutive turning motion. The filter arrangement may be designed so that the filter insert 500 is only turned one complete turn, or possibly less than a complete turn, such as ¾ turn, for a complete attachment of the filter insert 500 in the housing 505 and blocking of the drainage means in the filter housing.
It is to be understood that the present invention is not limited to the embodiments described above and illustrated in the drawings; rather, the skilled person will recognize that many changes and modifications may be made within the scope of the appended claims.
According to an alternative embodiment, the filter material body support structure at one end of the filter insert projects radially outwards from the filter material body forming a lid for closing the filter housing. Thus, the lid for closing the filter housing would be formed in one piece with the filter insert in a non-removable way. In an exchange of a used filter insert, the lid would be scraped together with the filter insert. Further, the sealing between the filter insert and the lid and the housing, respectively may be realized in different ways, such as in the form of a radial sealing, or an axial sealing.
According to a further alternative embodiment, the filter insert may comprise a filter insert guiding means formed by at least one recess projecting radially from the circumference of the filter material body and into the filter material body. Thus, the filter material body may be formed by a helical recess, which receives a correspondingly shaped rail. In the case of the filter material body being formed by a pleated structure, the paper may be formed with cut-outs distributed in such a manner that they define the helical recess.

Claims

1 . A filter insert (100,200,300,400,500) for being removably arranged in a filter housing (105,205,305,405,505), wherein the filter insert comprises
- a filter material body (102,202,302,402,502),
- a guiding means (104,204,304,404,504) arranged at a circumference of the filter material body for guiding the filter insert during movement relative to the filter housing,
characterized in that
- the filter insert guiding means (104,204,304,404,504) is helical and extends at least a complete turn.
2. A filter insert according to claim 1 , wherein the filter insert guiding means (104,204,304,404,504) extends at least two complete turns.
3. A filter insert according to claim 1 or 2, wherein the filter material body (102,202,302,402,502) is exposed in a radial direction of the filter insert beside the filter insert guiding means (104,204,304,404,504).
4. A filter insert according to any preceding claim, wherein the helical filter insert guiding means (104,204,304,404,504) is formed by an elongated helical member, wherein the filter material body (102,202,302,402,502) is exposed in a radial direction of the filter insert on each side of the elongated helical member.
5. A filter insert according to any preceding claim, wherein the filter insert guiding means (104,204,304,404,504) forms a relatively rigid structure in a circumferential direction.
6. A filter insert according to any preceding claim, wherein the filter insert guiding means (104,204,304,404,504) extends over at least 50% of the filter insert extension in an axial direction of the filter insert.
7. A filter insert according to any one of claims 1 -5, wherein the filter insert guiding means (104,204,304,404,504) extends over substantially the complete filter insert extension in an axial direction of the filter insert.
8. A filter insert according to any one of the preceding claims, wherein the filter insert guiding means (104,204,304,404,504) is arranged in contact with the circumference of the filter material body (102,202,302,402,502) for reinforcing the filter material body.
5 9. A filter insert according to claim 8, wherein the filter material body (102,202,302,402,502) is formed by a pleated structure and that the filter insert guiding means (104,204,304,404,504) is arranged to bridge a gap between two circumferentially spaced pleats in the pleated structure.
10 10. A filter insert according to claim 8, wherein the filter material body (102,202,302,402,502) is formed by a pleated structure and that the filter insert guiding means (104,204,304,404,504) is arranged to bridge gaps between substantially all circumferentially spaced pleats in the pleated structure.
15 1 1 . A filter insert according to any one of the preceding claims, wherein the helical filter insert guiding means (104,204,304,404,504) is accessible in an axial direction of the filter insert (100,200,300,400,500) for engagement with a corresponding guiding means in the filter housing.
20 12. A filter insert according to any one of the preceding claims, wherein the filter insert guiding means (104,204,304,404,504) is continuous along its complete extension.
13. A filter insert according to any one of the preceding claims, wherein the filter insert guiding means (104,304) is formed by at least one projection projecting radially from the
25 circumference of the filter material body.
14. A filter insert according to any one of claims 1 -12, wherein the filter insert guiding means (204,404) is formed by at least one recess projecting radially from the circumference of the filter material body.
30
15. A filter insert according to any one of the preceding claims, wherein the filter insert guiding means (104,204) is provided on an outer circumference of the filter material body (102,202).
16. A filter insert according to any one of the preceding claims, wherein the filter material body (102,202,302,402,502) is hollow.
17. A filter insert according to claim 16, wherein the filter insert guiding means (304,404) is provided on an inner circumference of the filter material body (302,402).
18. A filter insert according to any one of the preceding claims, wherein the filter insert (100,200,300,400,500) comprises a member (1 19) for actuating a drainage means in the filter housing and wherein the drainage means actuating member (1 19) is eccentrically positioned at one end of the filter insert for actuating the drainage means when the filter insert is completely inserted into the filter housing via engagement between the helical guiding means of the filter insert and the filter housing.
19. A filter insert according to any one of the preceding claims, wherein the filter insert comprises a filter material body support structure (108,1 10) at at least one end of the filter insert in its axial direction, wherein the filter material body support structure (108,1 10) has a main extension in a radial direction of the filter insert and that the filter insert guiding means (104,204,304,404,504) is rigidly connected to the filter material body support structure.
20. A filter insert according to claim 19, wherein the filter material body support structure (108,1 10) has a plate shaped structure.
21 . A filter insert according to any one of the preceding claims, wherein the filter insert comprises means (1 12) for engagement with a lid, which is adapted for closing the filter housing.
22. A filter insert according to claim 21 , wherein the lid engagement means (1 12) is adapted for a rotationally rigid connection between the lid and the filter insert guiding means.
23. A filter insert according to claim 21 or 22, wherein the lid engagement means (1 12) is adapted for a connection between the lid and the filter insert guiding means allowing the filter insert and the lid to be interconnected for being moved in unison in relation to the filter housing.
24. A filter insert according to any one of claims 21 -23, wherein the lid engagement means (1 12) is adapted for a rigid connection between the lid and the filter insert guiding means such that a turning movement of the lid towards and away from its operational position closing the filter housing is controlled by the engagement between the helical filter insert guiding means and corresponding guiding means in the filter housing.
25. A filter insert according to any one of the preceding claims, wherein the filter insert (100,200,300,400,500) is adapted for filtering a fluid for an internal combustion engine.
26. A filter arrangement comprising
- a filter insert (100,200,300,400,500) according to any one of the preceding claims,
- a filter housing (105,205,305,405,505) arranged for receiving the filter insert, wherein an inner peripheral wall of the filter housing is provided with a helical guiding means
(130,230,330,430) for engagement with the filter material body guiding means.
27. A filter arrangement according to claim 26, wherein the helical filter insert guiding means (104,204,304,404,504;130,230,330,430) is radially projecting from one of the filter material body and the filter housing inner peripheral wall and wherein the helical filter insert guiding means (104,204, 304,404,504;130,230,330,430) is radially recessed in the other one of the filter material body and the filter housing inner peripheral wall.
28. A filter arrangement according to claim 26 or 27, wherein the filter housing comprises an open end and wherein the filter arrangement further comprises
- a lid (120) for closing the open end of the filter housing.
PCT/EP2015/071879 2015-09-23 2015-09-23 A filter insert and a filter arrangement Ceased WO2017050366A1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
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Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
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Publications (1)

Publication Number Publication Date
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DE102017003578A1 (en) * 2017-04-12 2018-10-18 Hydac Fluidcarecenter Gmbh Device for exchanging a filter element
CN110772871A (en) * 2019-12-03 2020-02-11 珠海格力电器股份有限公司 Filter element positioning structure and drinking water device
CN110860118A (en) * 2018-08-28 2020-03-06 上海欧菲滤清器有限公司 Filter cartridge with operating device
WO2021164885A1 (en) * 2020-02-21 2021-08-26 Volvo Truck Corporation An air filter hosuing and an air filter element
WO2022233990A1 (en) * 2021-05-06 2022-11-10 Hengst Se Processing cartridge for a fluid-processing device
JP2024515874A (en) * 2021-04-30 2024-04-10 インテグリス・インコーポレーテッド FILTER CARTRIDGE, FILTER DEVICE, AND METHODS
US12415151B2 (en) 2020-07-03 2025-09-16 Volvo Truck Corporation Filter housing and an air filter system

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JP2004130253A (en) * 2002-10-11 2004-04-30 Nippon Mykrolis Kk Filter device with clogging prevention function
DE102013202449A1 (en) * 2013-02-14 2014-08-14 Mahle International Gmbh filter device

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Publication number Priority date Publication date Assignee Title
JP2004130253A (en) * 2002-10-11 2004-04-30 Nippon Mykrolis Kk Filter device with clogging prevention function
DE102013202449A1 (en) * 2013-02-14 2014-08-14 Mahle International Gmbh filter device

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102017003578A1 (en) * 2017-04-12 2018-10-18 Hydac Fluidcarecenter Gmbh Device for exchanging a filter element
CN110860118A (en) * 2018-08-28 2020-03-06 上海欧菲滤清器有限公司 Filter cartridge with operating device
CN110772871A (en) * 2019-12-03 2020-02-11 珠海格力电器股份有限公司 Filter element positioning structure and drinking water device
WO2021164885A1 (en) * 2020-02-21 2021-08-26 Volvo Truck Corporation An air filter hosuing and an air filter element
US12460609B2 (en) 2020-02-21 2025-11-04 Volvo Truck Corporation Air filter housing and an air filter element
US12415151B2 (en) 2020-07-03 2025-09-16 Volvo Truck Corporation Filter housing and an air filter system
JP2024515874A (en) * 2021-04-30 2024-04-10 インテグリス・インコーポレーテッド FILTER CARTRIDGE, FILTER DEVICE, AND METHODS
JP7729915B2 (en) 2021-04-30 2025-08-26 インテグリス・インコーポレーテッド FILTER CARTRIDGE, FILTER DEVICE, AND METHODS
WO2022233990A1 (en) * 2021-05-06 2022-11-10 Hengst Se Processing cartridge for a fluid-processing device

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