WO2008147585A2 - Ensemble de filtre de panneau pour filtration de la ventilation de carter; composants; et procédés - Google Patents

Ensemble de filtre de panneau pour filtration de la ventilation de carter; composants; et procédés Download PDF

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Publication number
WO2008147585A2
WO2008147585A2 PCT/US2008/056498 US2008056498W WO2008147585A2 WO 2008147585 A2 WO2008147585 A2 WO 2008147585A2 US 2008056498 W US2008056498 W US 2008056498W WO 2008147585 A2 WO2008147585 A2 WO 2008147585A2
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WO
WIPO (PCT)
Prior art keywords
media
seal
section
housing
media pack
Prior art date
Application number
PCT/US2008/056498
Other languages
English (en)
Other versions
WO2008147585A3 (fr
Inventor
Jan Leo Maria Cappuyns
Original Assignee
Donaldson Company, Inc.
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 Donaldson Company, Inc. filed Critical Donaldson Company, Inc.
Publication of WO2008147585A2 publication Critical patent/WO2008147585A2/fr
Publication of WO2008147585A3 publication Critical patent/WO2008147585A3/fr

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0002—Casings; Housings; Frame constructions
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/003—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions including coalescing means for the separation of liquid
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/42—Auxiliary equipment or operation thereof
    • B01D46/4227—Manipulating filters or filter elements, e.g. handles or extracting tools
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/0201—Housings; Casings; Frame constructions; Lids; Manufacturing or assembling thereof
    • F02M35/0202—Manufacturing or assembling; Materials for air cleaner housings
    • F02M35/0203—Manufacturing or assembling; Materials for air cleaner housings by using clamps, catches, locks or the like, e.g. for disposable plug-in filter cartridges
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10209—Fluid connections to the air intake system; their arrangement of pipes, valves or the like
    • F02M35/10222—Exhaust gas recirculation [EGR]; Positive crankcase ventilation [PCV]; Additional air admission, lubricant or fuel vapour admission
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/02—Non-permanent measures for connecting different parts of the filter
    • B01D2265/028—Snap, latch or clip connecting means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02—Gaskets, sealings
    • B01D2271/022—Axial sealings
    • 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
    • F01M13/00—Crankcase ventilating or breathing
    • F01M13/04—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil
    • F01M2013/0438—Crankcase ventilating or breathing having means for purifying air before leaving crankcase, e.g. removing oil with a filter
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners

Definitions

  • This disclosure relates to systems and methods for separating hydrophobic fluids (such as oils) which are entrained in gases as aerosols, from gas streams (for example diesel engine crankcase gases).
  • the arrangements also provide for filtration of fine particulate contaminants, for example carbon material, from the gas streams.
  • a particular example depicted, is in the form of a panel filter. Methods for using and assembling such panel filters and systems, are also provided.
  • Certain gas streams such as blow-by gases (ventilation gases) from the crankcases of diesel engines, carry substantial amounts of entrained oils (liquids) therein, as aerosols.
  • Oil (liquid) droplets within the aerosol are often within the size of 0.1-100 microns.
  • fine contaminant such as carbon contaminant.
  • contaminants are often of an average particle size of about 0.1-10 microns. It is preferred to reduce the amount of entrained oils (liquids) and fine contaminants (particulates) in crankcase gases.
  • variables for which improvements often concern include the following: (a) size/efficiency concerns, that is a desire for good efficiency separation while at the same time avoiding a requirement for a large separator system; (b) cost/efficiency, that is a desire for good or high efficiency without the requirement of substantially expensive system; (c) versatility, that is development of systems that can be adapted for a wide variety of applications and uses, in some instances without significant re- engineering, and (d) serviceability, that is development of systems that can be readily serviced after a period of use.
  • This disclosure particularly concerns development of techniques for use in crankcase ventilation (CCV), filter systems, which use a panel filter as a service part.
  • CCV crankcase ventilation
  • filter assemblies, arrangements and constructions for preferred use to filter crankcase blow-by gases are provided.
  • the arrangements are particularly developed to provide liquid drainage from coalescing media.
  • filter assembly refers to either or both of: filter cartridges for use in filter assemblies; and overall filter assemblies including filter cartridges.
  • filter cartridges for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter construction for use in filter assemblies
  • filter assembly refers to either or both of: filter cartridges for use in filter assemblies; and overall filter assemblies including filter cartridges.
  • a filter cartridge for filtering crankcase ventilation gases and coalescing hydrophobic fluid contained therein.
  • the cartridge includes: a media pack having a panel configuration; a carrier frame surrounding the media pack; and, a housing seal arrangement.
  • the carrier frame includes: a side wall portion surrounding the media pack; and a peripheral rim seal mount including a seal arch support.
  • the housing seal arrangement includes a peripheral seal section on the peripheral rim seal mount with an arch seal member section on the arch seal support; the arch seal support and arch seal member defining an open air flow (arch) passageway between a portion of the seal arch support and a portion of the media pack.
  • a filter cartridge arrangement is shown in detail.
  • a crankcase ventilation assembly comprising a housing configured for use with such a filter cartridge is described.
  • FIG. 1 is a schematic front view of an engine crankcase ventilation filter arrangement according to the present disclosure.
  • Fig. 2 is a schematic cross-sectional view, taken along line 2-2, Fig. 1.
  • Fig. 3 is a schematic, enlarged, fragmentary view of a portion of Fig. 2.
  • Fig. 4 is a schematic side cross-sectional view taken along line 4-4, Fig. 1.
  • Fig. 5 is a schematic side cross-sectional view taken along line 5-5
  • Fig. 6 is a schematic, enlarged, fragmentary view of portion of Fig. 5.
  • Fig. 7 is a schematic cross-sectional view taken along 7-7, Fig. 1.
  • Fig. 8 is a schematic, enlarged, fragmentary view of a portion of Fig. 7.
  • Fig. 9 is a schematic outlet side perspective view of a filter cartridge component useable in the assembly of Figs. 1-8.
  • Fig. 10 is a schematic inlet side perspective view of the cartridge depicted in Fig. 9.
  • Fig. 11 is a schematic bottom side view of the cartridge depicted in Figs. 9 and 10.
  • Fig. 12 is a schematic outlet side plan view of the cartridge depicted in Figs. 9 and 10.
  • Fig. 13 is a second, schematic, outlet side perspective view of the cartridge depicted in Figs. 9 and 10.
  • Fig. 14 is a schematic, exploded, perspective view of the assembly depicted in Fig. 1.
  • Fig. 15 is a schematic, outlet side perspective view of a media pack sub-component of the filter cartridge of Fig. 1. Detailed Description
  • Pressure-charged diesel engines often generate "blow-by" gases, i.e., a flow of air-fuel (gas-fuel) mixture leaking past pistons and from the combustion chambers.
  • Such "blow-by gases” generally comprise a gas phase, for example air or combustion off gases, carrying therein: (a) fine droplets of hydrophobic liquid (e.g., oil including fuel aerosol) for example typically comprising 0.1-10.0 micron droplets; and, (b) fine particulate contaminant from combustion and the engine, typically including carbon particles, often about 0.1-10 microns in size.
  • Such "blow-by gases” are generally directed outwardly from the engine block, through a blow-by vent.
  • hydrophobic when used in reference to the entrained liquid aerosol in a gas flow, reference is meant to non-aqueous fluids, such as oils. Generally such materials are immiscible in water.
  • gas or variants thereof, used in connection with a carrier fluid, refers to air, combustion off gases and other carrier gases for the aerosol.
  • Hydrophobic reference to the "hydrophobic” fluid, is not meant to suggest that there is never any water in the combustion gases. Rather it is meant that there is typically at least hydrophobic fluid, which raises issues of coalescing and filtering.
  • the gases may carry substantial amounts of other components.
  • Such components may include, for example: copper, lead, silicone, aluminum, iron, chromium, sodium, molybdenum, tin, and various heavy metals.
  • Engines operating such systems as trucks, farm machinery, boats, buses, and other equipment generally comprise diesel engines which may have significant crankcase gas flows contaminated as described above. Flow rates and volumes on the order of 2-50 cubic feet per minute (cfm); typically 5-10 cfm, are fairly common.
  • a typical system in which a crankcase ventilation filter arrangement according to the present disclosure would be utilized is as follows. Air is taken to the engine through a combustion air cleaner.
  • the combustion air cleaner filters the air taken in for the combustion process.
  • the turbo or turbo boost directs the filtered air into the engine. While in the engine, the air undergoes compression and with the fuel, combustion occurs. During this process, the engine gives off blow-by (i.e. crankcase ventilation) gases.
  • the crankcase ventilation filter arrangement is in gas flow communication with the engine to filter the blow-by gases. From this filter arrangement, the gases are either vented or are directed back into the engine (typically to the engine air intake system) depending on whether the system is open or closed.
  • a crankcase ventilation filter arrangement (and components thereof) is provided for engine blow-by gases, i.e., for separating a hydrophobic liquid phase from a gaseous stream.
  • a crankcase ventilation filtration assembly is shown in Fig. 1, at reference normal 1 .
  • the filtration assembly 1, in Fig. 1, is shown in an orientation as it would typically be positioned for use, with an upper portion IU of the figure being a side of assembly 1 positioned directed upwardly, and a lower portion IL of the figure being an opposite side directed downwardly.
  • the filtration assembly 1 includes a housing 5, defining an interior; and, an interiorly positioned, removable and replaceable, filter cartridge 6 (not shown in Fig. 1, see for example Fig. 14).
  • housing 1 includes gas flow inlet 8, a gas flow outlet 9, and, a liquid drain outlet 10.
  • the liquid drain outlet 10 is typically oriented adjacent lower portion or side IL, i.e., directed downwardly from a bottom portion of assembly 1 in use, to facilitate liquid drainage from an interior of housing 1, as described below.
  • FIG. 14 an exploded perspective view of assembly 1 is shown.
  • the housing 5 comprises two sections 5a, 5b, respectively separable from one another for access to an interior 5i of the housing 5.
  • typically housing section 5a would be mounted to the equipment system, for example utilizing mounting pads 15.
  • Housing section 5b would then be removably mounted on housing section 5 a; section 5b being a removable service cover secured in place by bolts 17 or other fasteners using pads 17a in section 5a, and pads 17b in section 5b.
  • Removal of access cover 5b provides for service access to an interior of housing 5, for example to remove, and service or replace, interiorly received filter cartridge 6.
  • housing section 5a is a downstream section; and, housing section 5b is an upstream section. That is, in use, during filtering air flows from section 5a into section 5b, while passing through the cartridge 6.
  • the inlet 8 is in housing section 5a.
  • flow of air is to section 5a from inlet 8, into section 5b without passage through the media of the cartridge 6, and then through the cartridge 6 (with filtering flow through media thereof) and back into section 5a, with liquid drain through drain 10 and gas flow exit through outlet 9.
  • Both liquid drain 10 and gas flow outlet 9 are on a downstream side of a seal around cartridge 6.
  • regulator valve assembly 24 inside of the housing 5, located generally under portion 20 of housing section 5a, is positioned regulator valve assembly 24.
  • Fig. 4 is a cross-sectional view taken along line 4-4, Fig. 1. Configuration and operation of an example regulator valve assembly 24 is described herein below, in more detail.
  • the regulator valve assembly 24 regulates inlet flow from the inlet 8, passing into and through interiorly received cartridge 6.
  • the regulator valve assembly 24 is positioned in housing section 5a.
  • a pressure relief valve arrangement is depicted.
  • the pressure relief valve arrangement 25 allows for venting gas pressure from inside of housing 5, for example in response to pressure spikes within the assembly 1 during use. This helps protect, for example, engine gaskets. Further discussion of pressure relief valve arrangement 25 is provided below. As can be seen in Fig. 14, the pressure relief valve arrangement 25 is in housing section 5 a.
  • a cross-sectional view of the assembly 1 is provided, taken along line 2-2, Fig. 1. Portions of the interior 5i of housing 5 as shown.
  • gases entering housing 5 through inlet 8 (Fig. 1) upon passage of the regulator valve assembly 24 (located under section 20) are then directed (without filtering) into interior region 30 of upstream housing section 5b.
  • the gases are then directed through filter cartridge 6, in the general direction of arrow 32 and into interior region 31 of downstream housing section 5a. Filtered gases in region 31 can then pass outwardly from assembly 1, through gas flow outlet 9.
  • FIG. 9 (perspective) view of cartridge 6, for use crankcase ventilation filtration assembly 1, is depicted.
  • the cartridge 6 is depicted in an orientation analogous to the way assembly 1 is depicted in Fig. 14. That is, inside of the assembly 1, Fig. 14, is positioned a cartridge 6 which generally is oriented as shown in Fig. 9. In actual use, cartridge 6 would be positioned with end 6U directed upwardly and opposite end 6L directed downwardly.
  • the view of cartridge 6 provided is generally toward a side from which filter gases leave cartridge 6; i.e., the view is toward a side of cartridge 6 directed into downstream housing section 5a, Fig. 1, during installation and use.
  • the cartridge 6 generally comprises perimeter carrier frame 40 positioned surrounding, and supporting an interiorly positioned media pack or media pack assembly 41.
  • Media pack assembly 41 includes media 42 appropriate for the conditions of intended use, supported by media support piece 43.
  • media support piece 43 is secured, by snap fit arrangement as discussed below, to perimeter carrier frame 40.
  • the media 42 is selected for at least the following characteristics: (a) ability to coalesce liquids entrained in the gases, allowing the liquid to drain therefrom; (b) filtration properties with respect to various particles within the crankcase gas stream; and (c) integrity under the conditions of use.
  • the amount of exposed surface area of the media, and thickness or the media, are also variables selected for the intended operational characteristics of the cartridge 6. Example media is discussed herein below.
  • the media 42 can comprise layers of media. Different layers media can be used to create gradients within the media 42.
  • the particular media pack assembly 41 depicted, is a panel filter media pack or panel filter.
  • panel in its context, is meant that the media 42 does not surround an open interior. Rather it is organized in a form in which gases, during filtering, pass from one exterior (inlet) face through the media
  • cartridge 6 has an upstream face 46 and an opposite downstream face 47.
  • the media 42 will be unpleated, and will comprise non- woven fibrous media.
  • the media pack 41 includes a downstream media support or grid 48 adjacent the media 42 on a downstream (exit) side 47 thereof.
  • the grid 48 provides support to the media 42 against distortion downstream, during use.
  • the grid 48, on the downstream (exit) side 47 of the media 42 comprises a portion of media support piece 43.
  • in the media pack assembly 41 is viewable, separated from a remainder of cartridge 6, i.e. separated from carrier frame 40.
  • media pack 41 comprises media support piece 43 and media 42.
  • the perimeter rim 49 includes a set of spaced, peripherally outwardly directed, snap-in hooks or projections 49a thereon, spaced, around perimeter 49 rim. These projections 49a are sufficiently flexible, so that when media pack assembly 41 is inserted into perimeter assembly 40, Fig. 9, the projections 49a project (one each from the set) outwardly into a set of through apertures 51 in carrier frame 40 to secure the cartridge 6 in position.
  • the perimeter rim 49 has four sides including: a first pair of opposite sides 50a, 50b; and, a second pair of opposite sides 50c, 50d.
  • perimeter 49 is generally rectangular.
  • the set of snap-in hooks or projections 49a is positioned with at least one, and typically at least two, spaced projections 49a, in each of the four sides 50a, 50b, 50c, 5Od.
  • the media 42 can be secured to the frame piece 43.
  • the media 42 can be compressed between frame piece 43 and carrier 40, without adhesive (or other attachment) of the media 42 to the frame piece 43.
  • the media 41 projects away (in an upstream direction) from the media support 43, defining four, exposed, media sides projecting upstream from grid 48.
  • These sides include a first pair of opposite sides 41a, 41b, adjacent sides 50a, 50b of the rim 49; and, a second pair of opposite sides 41c and 41d (not viewable) adjacent sides 50c and 50d, respectively, of rim 49.
  • the media pack 41 (Fig. 15) is positioned with sides 50a, 41a, adjacent upper side 6U of the cartridge; and, with sides 50b, 41b, directed adjacent side 6L of the cartridge 6.
  • media pack 41 can be snap-fit into carrier assembly 40, rotated so that sides 50b, 41b, will be adjacent side 6U in the resulting cartridge 6.
  • the example cartridge 6 comprises an assembly of subcomponents, including the media pack assembly 41 (media 42 and support 43) and the peripheral carrier frame 40.
  • the carrier frame 40 includes thereon a perimeter sidewall portion 54 surrounding the media pack 41; a perimeter or peripheral seal rim seal mount 55 having housing seal arrangement or gasket 56 thereon; and, an end flange 57.
  • the carrier frame 40 includes, as part of seal mount 55, a seal arch support 55x.
  • the housing seal arrangement 56 includes a perimeter or peripheral seal section portion or 56y mounted on the rim mount 55 extending around side wall portion 54 and over arch support 55x.
  • the housing seal arrangement 56 is configured to be positioned between housing sections 5 a, 5b, to form a seal around the media pack 41 and cartridge 6 when housing section 5b is mounted on housing section 5 a, with the cartridge 6 within interior 5i. Attention is directed to Fig. 4. In Fig. 4 a portion of carrier frame 40 having rim seal mount 55 thereon is viewable in cross-section. Also viewable is a portion of peripheral seal section 56y. Typically, the rim 55 includes a plurality of apertures therethrough, and housing seal arrangement 56 is molded in place on the rim 55, with portions extending through the rim 55 to provide for mechanical interlock.
  • the housing seal arrangement 56 includes oppositely directed ribs or edges 56a, 56b, to facilitate sealing to and between housing sections 5a, 5b. Such sealing is viewable in Fig. 4.
  • the sidewall portion 54 carrier member 40 includes an upstream section 58 and a downstream section 59, on opposite sides of rim 55.
  • the downstream section 59 comprises a perimeter wall having a set of apertures 51 therein, into each one of which one each of projections 49b discussed above projects, directed outwardly.
  • Wall 59 is generally rectangular, and configured such that during assembly of cartridge 6, media pack 41 extends into open edge 59o of wall 59.
  • the wall 59 includes a first pair of opposite sides 65, 66 and second pair of opposite sides 67, 68.
  • side 65 will generally be directed upwardly, i.e., adjacent assembly side IU Fig. 1.
  • Side 66 (Fig. 9) will generally be directed downwardly and adjacent assembly side IL, Fig. 1.
  • Drain aperture arrangement 70 is directed downwardly when cartridge 6 is installed for use, and provides for direct liquid flow from media 42 of media pack 41, on a downstream side of rim 55 and housing seal arrangement 56, when cartridge 6 is installed. This means that on a downstream side of housing seal arrangement 56, liquid can drain outwardly from media pack 42, through wall 66 via drain aperture arrangement 70.
  • Drain aperture arrangement 70 can comprise a plurality of individual apertures.
  • the drain aperture arrangement 70 comprises a plurality of (for example five) spaced apertures 70a. Drain aperture arrangement 70 is in drain overlap or drainage overlap, with the media 42. By this it is meant when the cartridge 6 is oriented for use, liquid will drain downwardly from the media 42 through the drain aperture arrangement 70, without the liquid having to exit the downstream side 47 of the cartridge 46. (Typically some liquid will also exit side 47 and flow down to outlet 10.)
  • carrier frame 40 includes seal arch support 55x, which forms an open arch 75 extending outwardly from one of the sides of the cartridge 6.
  • the arch 75 projects outwardly away from side 67 of side wall portion 54 and thus media pack assembly 41, to define an arch passageway 76, between a portion of arch 75 and a portion of media pack assembly 42 (and a portion 4Ox of carrier frame 40 adjacent wall portion 54 and wall 59).
  • the arch passageway 76 is an opening through which portions of a service person's hand can project, to grasp cartridge 6 during handling.
  • the arch passageway 76 is positioned to extend around a region within the assembly 1 (see Fig. 4), through which air passes when moving from flow regular assembly 24 into cartridge section 5a.
  • arch passageway 76 is an air flow passageway in use.
  • Arch 75 includes arch seal member section 56x of perimeter housing seal arrangement 56y.
  • Arch 75 is non-collapsible; i.e., it does not fold or otherwise collapse, in normal use.
  • the housing seal arrangement 56 includes arch seal section 56x extending around arch opening 75.
  • the housing seal arrangement 56 includes a continuous perimeter seal section 56y which extends on the peripheral rim seal mount 55.
  • a gasket member in region 4Ox can be provided in extension between ends 55s, 55t, i.e., by providing for a seal between one or both of the housing sections 5a, 5b, and seal material in extension along region 4Ox.
  • a seal member is shown in 56st, in cross- section.
  • gasket member 56st When the gasket member 56st, is in extension over region 4Ox, there is an inhibition provided to flow of gases from section 5b into section 5a, with passage over section 50x, and without filtering passage through the media 42 of the cartridge 6.
  • Gasket section 56st can form portions of continuous molded seal 56, with perimeter seal arrangement 56y, if desired. Attention is now directed to Fig. 10, a view of cartridge 6 directed toward upstream side 46.
  • Upstream section 58 of the carrier frame 40 includes side sections 80, 81, 82 and 83.
  • Side section 80 is generally oriented adjacent portion IU of assembly 1 during use.
  • Section 81 is opposite section 80 and is generally oriented downwardly, toward portion IL of assembly 1 in use.
  • Section 81 includes flange 57 thereon, which extends further away (upstream) from gasket 56, then portions of the other side walls 80, 82, and 83.
  • Flange 57 includes flange end 89 thereon, positioned remote from seal rim 55 to engage, and extend across, a portion of upstream housing section, 5b, at a location above drain outlet 10 in use. This is discussed below.
  • Flange 57 can comprise a molded-in-place component, for example it can be formed from a flexible, compressible, material such as a gasketing or sealing material.
  • a gasketing or sealing material such as a gasketing or sealing material.
  • engagement between flange 57 and housing section 5b does not need to form a gas tight seal, as does seal arrangement 56. Rather the engagement of flange 57 of the housing section 5b is to ensure that liquid coalescing in upstream section of 5b of housing 5 will be inhibited from draining to lower portions of housing section 5a, but rather will likely to be caught by flange 57 to flow into the media pack 41.
  • upstream sidewall 58 includes a grid arrangement 90 extending across the media 41 on an upstream side thereof.
  • the grid arrangement 90 includes a handle arrangement 91 which operates as a handle, to facilitate installation and removal of the cartridge 6 with respect to housing section 5a.
  • handle arrangement 91 generally comprises a pair of projection arrangements including, in the example shown, spaced projections 92 projecting in a direction away from media 42.
  • An outer tip of each of the projections 92 includes a laterally directed flange 93, for easy grasping.
  • the flanges 93 extend away from one another and in a direction generally over the media 42.
  • FIG. 11 a side view of cartridge 6 directed towards side 6L is viewable. Drain apertures 70a are viewable on a downstream side of gasket 56, through which media 42 can be seen.
  • Fig. 12 a plan view of cartridge 6 is viewable, taken toward downstream side 47, Fig. 9.
  • Fig. 13 an alternate perspective view to that shown in Fig. 9 is provided, also taken toward downstream side 47 of cartridge 6. D. Further Features of the Filter Assembly 1
  • FIG. 2 a cross-section view taken along line 2-2, Fig. 1.
  • cartridge 6 is viewable in cross-section, with housing seal arrangement 56 compressed between housing sections 5 a, 5b, to form a peripheral pinch seal 56y around the cartridge 6.
  • the media 42 of cartridge 6 comprises multiple layers of media 42a, 42b, 42c, 42d.
  • relief valve assembly 25 is viewable. An enlarged portion of Fig. 2, depicting relief valve assembly 25, is shown in Fig. 3. Referring to Fig. 3, relief valve assembly 25 includes a valve member
  • valve assembly 25 further includes a valve seat 110.
  • the valve member 100 is positioned projecting through an aperture in valve seat 110, with the valve head 101 oriented outside of the housing 5 and with gasket 102 sealing valve seat 110 closed.
  • a force maintaining closure is provided by helical spring 115 in compression between a portion of valve seat 110, and projection 104 on valve stem 103.
  • valve head 101 is biased in a direction of arrow 120, to open valve seat 110, to vent gases from region 25i and reduce internal pressure, at which point the valve assembly 25 will close.
  • Valve assembly 25 operates as a relief valve, to allow gas pressure within interior 5i to be vented, should the pressure exceed an acceptable limit. It is noted that region 25i, in which the valve assembly 25 is positioned, is upstream of the cartridge 6.
  • valve seal 110 is positioned in housing section 5a.
  • Fig. 4 a cross-sectional view taken along line 4-4, Fig. 1.
  • the cartridge 6 can be seen positioned with housing seal arrangement 56, including sections 56y and 56st secured between housing sections 5a, 5b.
  • regulator valve assembly 24 is viewable in detail.
  • the regulator valve assembly 24 comprises diaphragm 124 having a peripheral gasket bead 125 secured between top 20 and portion 127 of housing section 5 a.
  • the diaphragm 124 is shown supported on spring 130 around tube 135. Gas flow from inlet 8 must pass into an interior 135i of tube 135, to reach cartridge 6. Entry into open end 135a, of the gas flow tube 135, from inlet 8, is regulated by valve 24.
  • diaphragm 124 is supported on spring 130 over the tube 135, to provide this effect. From interior 135i of tube 135, the gas is passed into region 140 of housing section 5b, and then through cartridge 6 from upstream side 46 and downstream side 47.
  • arch 75 is seen providing open passageway 76, for gas flow passage from interior 135i of tube 135 into region 140 of housing section 5b.
  • Housing perimeter seal arrangement 56y is viewable in cross-section, with arch section 56x extending around arch 75.
  • FIG. 5 a cross-sectional view taken along line 5-5, Fig. 1 is viewable. Referring to Fig. 5, it can be seen that flange 57 which engages wall 145 of housing section 5b. This inhibits coalesced liquid upstream of media 42 from collecting in region 146 instead of flowing into media 42 and eventually to drain outlet 10.
  • FIG. 6 an enlarged fragmentary view of a portion of Fig. 5.
  • housing perimeter seal arrangement 56y is viewable compressed between housing sections 5a, 5b, and in particular between perimeter flange 150 on section 5a, and perimeter flange 151 on section 5b.
  • Fig. 7 a cross-sectional view taken along line 7-7, Fig. 1.
  • the drain 10 can be seen to communicate only with an upstream side 170 of interior 5i the housing 5. From Fig. 7 it will be understood that liquid draining through drain aperture arrangement 70 to outlet 10, will occur downstream of seal support rim 55 and housing seal arrangement 56.
  • Fig. 8 is an enlarged cross-sectional view showing regions designated in Fig. 7. Again housing seal arrangement 56y is viewable providing a peripheral seal between housing sections 5a, 5b, the sealing pressure is applied by bolt 17.
  • downstream and variants thereof, when used to refer to a portion of a characterized assembly, is meant generally to refer to portion on an unfiltered side of rim 55 and seal 56, when the assembly 1 is configured for use.
  • downstream is correspondingly meant, when used to reference a portion of component, construction is positioned on a filtered side of rim 55 and seal arrangement 56, when the component is installed in the assembly 1, for use.
  • the appropriate media 42, for the media pack 41 is selected for the conditions of use.
  • the media is selected to have appropriate properties with respect to: coalescing and drainage of liquid; and, filtering of gases passing therethrough with respect to particulates.
  • Layers of media can be utilized for the media 41 of media pack 42.
  • the media will comprise a continuous, non-woven, fibrous media.
  • An example useable media as described in U.S. provisional application 60/656,806 filed February 22, 2005, incorporated herein by reference.
  • Another example media is described in PCT Publication WO 05/083,240, published September 9, 2005, and incorporated herein by reference.
  • a third example media is described in U.S. provisional application 60/650,051 filed February 4, 2005, incorporated herein by reference. The following description is of example media from U.S. provisional application 60/650,051, filed February 4, 2005.
  • the media is typically a wet laid media is formed in a sheet form using wet laid processing, and is then positioned on/in the filter cartridge.
  • the wet laid media sheet is at least used as a media stage stacked in multiple layers.
  • multiple layers, forming a gradient can be provided in a media stage, by first applying one or more layers of wet laid media of first type and then applying one or more layers of a media (typically a wet laid media) of a different, second, type.
  • the gradient involves use of two or more media types which are selected for at least differences in efficiency.
  • wet laid sheet “media sheet” or variants thereof, is used to refer to the sheet material that is used to form the media extension of a filter, as opposed to the overall definition of the total media extension in the filter. This will be apparent from certain of the following descriptions.
  • Media extensions of the type of primary concern herein, are at least used for coalescing/drainage, although they typically also have particulate removal function and thus comprise a portion of an overall media stage that provides for both coalescing/drainage and desired removal efficiency of solid particulate removal.
  • an example media composition used to form a media extension in a CCV (crankcase ventilation) filter for coalescing/drainage is typically as follows:
  • pore size (X-Y direction) of at least 10 micron, usually at least 12 micron.
  • the pore size is typically no greater than 60 micron, for example within the range of 12-50 micron, typically 15-45 micron.
  • DOPE % efficiency at 10.5 fpm for 0.3 micron particles
  • It typically comprises at least 30% by weight, typically at least 40% by weight, often at least 45% by weight and usually within the range of 45-70% by weight, based on total weight of filter material within the sheet, bi-component (binder) fiber material in accord with the general description provided herein.
  • the average lengths are typically 1 to 20 mm, often 1-10 mm.
  • This secondary fiber material can be a mix of fibers. Typically polyester and/or glass fibers are used, although alternatives are possible.
  • the fiber sheet (and resulting media extension) includes no added binder other than the binder material contained within the bi-component fibers. If an added resin or binder is present, preferably it is present at no more than about 7% by weight of the total fiber weight, and more preferably no more than 3% by weight of the total fiber weight.
  • Media in accord with the general definitions provided herein, including a mix of bi-component (binder) fiber and other fiber, can be used as any (and in some instances all) layer(s) of a media stage in a crankcase ventilation filter as generally described above in connection with the figures. When used in this manner, it will typically be placed in multiple layers, although alternatives are possible.
  • the overall efficiency can be calculated based upon the number of layers and the efficiency of each layer. For example the efficiency at 10.5 feet per minute (3.2 m/min) for 0.3 micron DOPE particles for media stage comprising two layers of wet laid media each having an efficiency of 12% would be 22.6%, i.e., 12% + .12 x 88.
  • final media stage refers to a stage resulting from wraps or coils of the sheet(s) of the media.
  • the media extension performs two important functions:
  • a calculated pore size for media used to form media extension within the range of 12 to 50 micron is generally useful. Typically the pore size is within the range of 15 to 45 micron.
  • the term X-Y pore size and variants thereof when used herein, is meant to refer to the theoretical distance between fibers in a filtration media. X-Y refers to the surface direction versus the Z direction which is the media thickness. The calculation assumes that all the fibers in the media are lined parallel to the surface of the media, equally spaced, and ordered as a square when viewed in cross- section perpendicular to the length of the fibers. The X-Y pore size is a distance between the fiber surfaces on the opposite corners of the square.
  • the d 2 mean of the fiber is used as the diameter.
  • the d 2 mean is the square root of the average of the diameters squared. It has been found, in some instances, that it is useful to have calculated pore sizes on the higher end of the preferred range, typically 30 to 50 micron, when the media stage at issue has a total vertical height, in the crankcase ventilation filter of less than 7 inches (178 mm); and, pore sizes on the smaller end, about 15 to 30 micron, are sometimes useful when the filter cartridge has a height on the larger end, typically 7-12 inches (178 - 305 mm).
  • Solidity is the volume fraction of media occupied by the fibers. It is the ratio of the fibers volume per unit mass divided by the media's volume per unit mass. Typical materials preferred for use in media extension according to the present disclosure, have a percent solidity at 0.125 psi (8.6 ) of fewer than 10%, and typically fewer than 8%, for example 6-7%.
  • DOPE Efficiency at 10.5 ft/minute for 0.3 micron particles.
  • the preferred efficiency stated is desirable for layers or sheets of media to be used to generate crankcase ventilation filters. This requirement indicates that a number of layers of the wet laid media will typically be required, in order to generate an overall desirable efficiency for the media stage of typically at least 85% or often 90% or greater, in some instances 95% or greater. The reason a relatively low efficiency is provided in any given layer, is that it facilitates coalescing and drainage and overall function.
  • DOPE efficiency is a fractional efficiency of a 0.3 micron DOPE particle (dactyl phthalate) challenging the media at 10 fpm.
  • a TSAR model 3160 Bench (TSAR Incorporated, St. Paul, Minnesota) can be used to evaluate this property. Model dispersed particles of DOPE are sized and neutralized prior to challenging the media.
  • the fiber composition of the media include 30 to 70%, by weight, of bi-component (binder) fiber material.
  • bi-component fiber material is effective utilization of fiber size while maintaining a relatively low solidity. With the bi-component fibers, this can be achieved while still accomplishing a sufficiently high strength media for handling installation in crankcase ventilation filters.
  • the bi-component fibers are binder fibers.
  • the bi-component fibers generally comprise two polymeric components formed together, as the fiber.
  • Various combinations of polymers for the bi-component fiber may be useful, but it is important that the first polymer component melt at a temperature lower than the melting temperature of the second polymer component and typically below 205 0 C.
  • the bi-component fibers are integrally mixed and evenly dispersed with the other fibers, in forming the wet laid media. Melting of the first polymer component of the bi-component fiber is necessary to allow the bi-component fibers to form a tacky skeletal structure, which upon cooling, captures and binds many of the other fibers, as well as other bi- component fibers.
  • the bi-component fibers will be formed in a sheath core form, with a sheath comprising the lower melting point polymer and the core forming the higher melting point.
  • the low melting point e.g., about 80 to 205 0 C
  • thermoplastic is typically extruded around a fiber of the higher melting point material (e.g., about 120 to 26O 0 C).
  • the bi-component fibers typically have a average largest cross-sectional dimension (average fiber diameter if round) of about 5 to 50 micrometer often about 10 to 20 micrometer and typically in a fiber form generally have an average length of at least 1 mm, and not greater than 30 mm, usually no more than 20 mm, typically 1-10 mm.
  • largest in this context, reference is meant to the thickest cross-section dimension of the fibers.
  • Such fibers can be made from a variety of thermoplastic materials including polyolefin's (such as polyethylene's, polypropylenes), polyesters (such as polyethylene terephthalate, polybutylene terephthalate, PCT), nylons including nylon 6, nylon 6, 6, nylon 6, 12, etc.
  • polyolefin's such as polyethylene's, polypropylenes
  • polyesters such as polyethylene terephthalate, polybutylene terephthalate, PCT
  • nylons including nylon 6, nylon 6, 6, nylon 6, 12, etc.
  • Any thermoplastic that can have an appropriate melting point can be used in the low melting component of the bi-component fiber while higher melting polymers can be used in the higher melting "core” portion of the fiber.
  • the cross-sectional structure of such fibers can be a "side-by-side” or "sheath-core” structure or other structures that provide the same thermal bonding function.
  • lobed fibers where the tips have lower melting point polymer.
  • the value of the bi-component fiber is that the relatively low molecular weight resin can melt under sheet, media, or filter forming conditions to act to bind the bi-component fiber, and other fibers present in the sheet, media, or filter making material into a mechanically stable sheet, media, or filter.
  • the polymers of the bi-component (core/shell or sheath and side-by- side) fibers are made up of different thermoplastic materials, such as for example, polyolefin/polyester (sheath/core) bi-component fibers whereby the polyolefin, e.g. polyethylene sheath, melts at a temperature lower than the core, e.g. polyester.
  • Typical thermoplastic polymers include polyolefins, e.g. polyethylene, polypropylene, polybutylene, and copolymers thereof, polytetrafluoroethylene, polyesters, e.g.
  • polyethylene terephthalate polyvinyl acetate, polyvinyl chloride acetate, polyvinyl butyral, acrylic resins, e.g. polyacrylate, and polymethylacrylate, polymethylmethacrylate, polyamides, namely nylon, polyvinyl chloride, polyvinylidene chloride, polystyrene, polyvinyl alcohol, polyurethanes, cellulosic resins, namely cellulosic nitrate, cellulosic acetate, cellulosic acetate butyrate, ethyl cellulose, etc., copolymers of any of the above materials, e.g.
  • ethylene- vinyl acetate copolymers ethylene-acrylic acid copolymers, styrene-butadiene block copolymers, Kraton rubbers and the like.
  • Particularly preferred in the present invention is a bi- component fiber known as 271P available from DuPont. Others fibers include FIT 201, Kuraray N720 and the Nichimen 4080 and similar materials. AU of these demonstrate the characteristics of cross-linking the sheath polymer upon completion of first melt. This is important for liquid applications where the application temperature is typically above the sheath melt temperature. If the sheath does not fully crystallize then the sheath polymer will remelt in application and coat or damage downstream equipment and components.
  • a useable bi-component (binder) fiber for forming wet laid media sheets for use in CCV media is Dupont polyester bi-component 27 IP, typically cut to a length of about 6 mm. 2.
  • the bi-component fibers provide a matrix for the crankcase ventilation filter media.
  • the additional fibers or secondary fibers sufficiently fill the matrix to provide the desirable properties for coalescing and efficiency.
  • the secondary fibers can be polymeric fibers, glass fibers, metal fibers, ceramic fibers or a mixture of any of these. Typically glass fibers, polymeric fibers or a mixture are used.
  • Glass fibers useable in filter media of the present invention include glass types known by the designations: A, C, D, E, Zero Boron E, ECR, AR, R, S, S- 2, N, and the like, and generally, any glass that can be made into fibers either by drawing processes used for making reinforcement fibers or spinning processes used for making thermal insulation fibers.
  • Non-woven media of the invention can contain secondary fibers made from a number of both hydrophilic, hydrophobic, oleophilic, and oleophobic fibers. These fibers cooperate with the glass fiber and the bi-component fiber to form a mechanically stable, but strong, permeable filtration media that can withstand the mechanical stress of the passage of fluid materials and can maintain the loading of particulate during use.
  • Secondary fibers are typically monocomponent fibers with average largest cross-sectional dimension (diameters if round) that can range from about 0.1 on up, typically 1 micron or greater, often 8-15 microns and can be made from a variety of materials including naturally occurring cotton, linen, wool, various cellulosic and proteinaceous natural fibers, synthetic fibers including rayon, acrylic, aramide, nylon, polyolefin, polyester fibers.
  • One type of secondary fiber is a binder fiber that cooperates with other components to bind the materials into a sheet.
  • Another type of secondary fiber is a structural fiber that cooperates with other components to increase the tensile and burst strength the materials in dry and wet conditions.
  • the binder fiber can include fibers made from such polymers as polyvinyl chloride, polyvinyl alcohol. Secondary fibers can also include inorganic fibers such as carbon/graphite fiber, metal fiber, ceramic fiber and combinations thereof.
  • the secondary thermoplastic fibers include, but are not limited to, polyester fibers, polyamide fibers, polypropylene fibers, copolyetherester fibers, polyethylene terephthalate fibers, polybutylene terephthalate fibers, polyetherketoneketone (PEKK) fibers, polyetheretherketone (PEEK) fibers, liquid crystalline polymer (LCP) fibers, and mixtures thereof.
  • Polyamide fibers include, but are not limited to, nylon 6, 66, 11, 12, 612, and high temperature "nylons" (such as nylon 46) including cellulosic fibers, polyvinyl acetate, polyvinyl alcohol fibers (including various hydrolysis of polyvinyl alcohol such as 88% hydrolyzed, 95% hydrolyzed, 98% hydrolyzed and 99.5% hydrolyzed polymers), cotton, viscose rayon, thermoplastic such as polyester, polypropylene, polyethylene, etc., polyvinyl acetate, polylactic acid, and other common fiber types. Mixtures of the fibers can be used, to obtain certain desired efficiencies and other parameters.
  • the sheet media of the invention are typically made using papermaking processes. Such wet laid processes are particularly useful and many of the fiber components are designed for aqueous dispersion processing. However, the media of the invention can be made by air laid processes that use similar components adapted for air laid processing.
  • the machines used in wet laid sheet making include hand laid sheet equipment, Fourdrinier papermaking machines, cylindrical papermaking machines, inclined papermaking machines, combination papermaking machines and other machines that can take a properly mixed paper, form a layer or layers of the furnish components, remove the fluid aqueous components to form a wet sheet.
  • a fiber slurry containing the materials are typically mixed to form a relatively uniform fiber slurry. The fiber slurry is then subjected to a wet laid papermaking process.
  • the wet laid sheet can then be dried, cured or otherwise processed to form a dry permeable, but real sheet, media, or filter.
  • the bi- component mats of the invention are generally processed through the use of pape ⁇ naking-type machines such as commercially available Fourdrinier, wire cylinder, Stevens Former, Roto Former, Inver Former, Venti Former, and inclined Delta Former machines.
  • an inclined Delta Former machine is utilized.
  • a bi-component mat of the invention can be prepared by forming pulp and glass fiber slurries and combining the slurries in mixing tanks, for example. The amount of water used in the process may vary depending upon the size of the equipment used.
  • the furnish may be passed into a conventional head box where it is dewatered and deposited onto a moving wire screen where it is dewatered by suction or vacuum to form a non-woven bi-component web.
  • the binder in the bi-component fibers is activated by passing the matt through a heating step.
  • the resulting material can then be collected in a large roll if desired.
  • a method of modifying the surface of the fibers is to apply a surface treatment such as a flourochemical or silicone containing material, typically up to 5% by weight of the media.
  • the surface treatment agent can be applied during manufacture of the fibers, during manufacture of the media or after manufacture of the media post- treatment, or after provision of the media pack.
  • Numerous treatment materials are available such as flourochemicals or silicone containing chemicals that increase contact angle.
  • An example is the DuPont Zonyl ⁇ M flourochemicals, such as #7040 or #8195.
  • a filter cartridge for filtering crankcase ventilation gases while coalescing hydrophobic fluid contained therein.
  • the filter cartridge includes a media pack having a panel configuration and a carrier frame surrounding the media pack.
  • the carrier frame includes a side wall portion surrounding the media pack; and, a peripheral rim seal mount including a seal arch support.
  • the seal arch support defines an arch opening or passageway between a portion of the seal arch support and a portion of the media pack (i.e.., a remainder of the carrier frame).
  • the cartridge includes a housing seal arrangement.
  • the housing seal arrangement includes a peripheral seal section mounted on the peripheral seal mount.
  • the housing seal arrangement includes arch seal member section mounted on the seal arch support. The seal arch support, along with the arch seal member, defines an open arch air flow passageway and handle.
  • the media pack has a rectangular outer perimeter, and the side wall portion of the carrier frame is rectangular.
  • the side wall portion typically includes an upstream section and a downstream section.
  • the downstream section of the side wall portion includes a liquid drain arrangement therethrough, in overlap with portion of the media pack.
  • downstream in this context, it is meant that the side wall portion with the liquid drain arrangement therethrough, is positioned so that liquid drainage from the media pack will occur on a downstream side of the housing seal arrangement, during use of the cartridge.
  • the media pack comprises a non-woven, and typically non-pleated, media positioned between a downstream media support and an upstream grid; and, the downstream media support is snap-fit into the side wall portion of the carrier frame.
  • a specific example of such a snap-fit arrangement is depicted, and with the downstream media support of the media pack includes an outer periphery with a set of flexible, outwardly directed, snap-fit projections; and, the side wall portion of the carrier frame includes a set of snap-fit receiver apertures therein: each snap-fit receiver aperture of the set of snap-fit receiver apertures receiving therein one of the set of flexible snap-fit projections.
  • an upstream section of the side wall portion includes a lateral flange member thereon having a seal edge remote from the peripheral housing seal and projecting upstream from the remainder of the cartridge.
  • the seal member is positioned to engage an upstream housing section, when the cartridge is installed in a housing for use.
  • a filter assembly for filtering crankcase ventilation gases and coalescing hydrophobic fluid contained therein is provided.
  • the assembly generally includes a housing defining a housing interior and having a first housing section and a second housing section, and a filter cartridge in accord with the descriptions of the filter cartridge provided above, therein.
  • the first housing section in an example described, includes a gas flow inlet, a gas flow outlet and a liquid drain outlet.
  • the housing first section further includes a relief valve assembly and a regulator valve assembly therein.
  • the regulator valve assembly in an example shown, includes a diaphragm engaged by a coiled spring, with the coiled spring extending around a flow tube.
  • the seal arch support of the cartridge is positioned in the housing such that a flow aperture defined by the cartridge allows for gas flow from the flow tube to pass through the arch and to then enter the second housing section.
  • the lateral flange member on the upstream section of the side wall portion of the cartridge engages the second housing section, to form a seal thereacross.
  • Drain apertures in the cartridge are directed downwardly in drain overlap with media within the cartridge, to allow drain of liquid from the media to the drain.
  • Various forms of similar arrangements are described, generally, in U.S. Provisional Application 60/731,287 filed October 28, 2005 and PCT Application US06/41738, filed October 27, 2006, each of which is incorporated herein by reference.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Combustion & Propulsion (AREA)
  • Manufacturing & Machinery (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Lubrication Details And Ventilation Of Internal Combustion Engines (AREA)

Abstract

L'invention concerne une cartouche filtrante pour filtrer des gaz de ventilation du carter et coalescer un fluide hydrophobe qui y est contenu. La cartouche comprend généralement un milieu entouré par un cadre porteur; le cadre porteur comprenant une monture de joint et un joint de logement, définissant une section arquée fournissant une ouverture entre la section arquée et la garniture du milieu. Un ensemble de filtre comprenant la cartouche filtrante est décrit, ainsi que des procédés d'assemblage et d'utilisation.
PCT/US2008/056498 2007-03-13 2008-03-11 Ensemble de filtre de panneau pour filtration de la ventilation de carter; composants; et procédés WO2008147585A2 (fr)

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Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2013003769A2 (fr) 2011-06-30 2013-01-03 Donaldson Company, Inc. Ensembles séparateurs air/huile, composants et procédés
WO2013019643A2 (fr) 2011-07-29 2013-02-07 Donaldson Company, Inc. Ensembles et composants de séparation gaz/liquide; ensembles d'évacuation d'un courant liquide; systèmes d'utilisation; et caractéristiques et composants
WO2013059588A1 (fr) 2011-10-20 2013-04-25 Donaldson Company, Inc. Ensembles, composants et procédés de séparateur air/huile
WO2013104797A1 (fr) * 2012-01-13 2013-07-18 Mann+Hummel Gmbh Elément filtrant pour filtre à air, et filtre à air
KR101566110B1 (ko) * 2014-06-27 2015-11-04 쌍용자동차 주식회사 자동차용 에어클리너 어셈블리
US9359924B2 (en) 2010-05-13 2016-06-07 Donaldson Company, Inc. Engine crankcase ventilation filter assembly; components; feature; and methods
US9638147B2 (en) 2013-07-12 2017-05-02 Mann+Hummel Gmbh Filter element with at least one guide crosspiece, filter with a filter element and filter housing of a filter
WO2017139454A1 (fr) * 2016-02-10 2017-08-17 United Air Specialists, Inc. Filtre emboîté à utiliser dans une unité de coalesceur de buée
DE102017006074A1 (de) * 2017-06-28 2019-01-03 Mann+Hummel Gmbh Flachfilterelement, insbesondere zur Gasfiltration
US11020701B2 (en) 2017-01-30 2021-06-01 Mann+Hummel Gmbh Filter element having optimized flow control

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861359A (en) * 1989-02-10 1989-08-29 Allied-Signal Inc. Dual function air filter
EP0534079A2 (fr) * 1991-09-24 1993-03-31 Knecht Filterwerke Gmbh Elément pour filtre à air d'aspiration en particulier pour véhicules automobiles
US20040011010A1 (en) * 2002-07-18 2004-01-22 Rotter Terrence M. Panel type air filter element with integral baffle
WO2008103736A1 (fr) * 2007-02-22 2008-08-28 Donaldson Company, Inc. Élément filtrant et procédé associé

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4861359A (en) * 1989-02-10 1989-08-29 Allied-Signal Inc. Dual function air filter
EP0534079A2 (fr) * 1991-09-24 1993-03-31 Knecht Filterwerke Gmbh Elément pour filtre à air d'aspiration en particulier pour véhicules automobiles
US20040011010A1 (en) * 2002-07-18 2004-01-22 Rotter Terrence M. Panel type air filter element with integral baffle
WO2008103736A1 (fr) * 2007-02-22 2008-08-28 Donaldson Company, Inc. Élément filtrant et procédé associé

Cited By (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9359924B2 (en) 2010-05-13 2016-06-07 Donaldson Company, Inc. Engine crankcase ventilation filter assembly; components; feature; and methods
WO2013003769A2 (fr) 2011-06-30 2013-01-03 Donaldson Company, Inc. Ensembles séparateurs air/huile, composants et procédés
WO2013019643A2 (fr) 2011-07-29 2013-02-07 Donaldson Company, Inc. Ensembles et composants de séparation gaz/liquide; ensembles d'évacuation d'un courant liquide; systèmes d'utilisation; et caractéristiques et composants
WO2013059588A1 (fr) 2011-10-20 2013-04-25 Donaldson Company, Inc. Ensembles, composants et procédés de séparateur air/huile
WO2013104797A1 (fr) * 2012-01-13 2013-07-18 Mann+Hummel Gmbh Elément filtrant pour filtre à air, et filtre à air
US9415337B2 (en) 2012-01-13 2016-08-16 Mann+Hummel Gmbh Air filter element and air filter
US9638147B2 (en) 2013-07-12 2017-05-02 Mann+Hummel Gmbh Filter element with at least one guide crosspiece, filter with a filter element and filter housing of a filter
US10316804B2 (en) 2013-07-12 2019-06-11 Mann+Hummel Gmbh Filter element with at least one guide crosspiece, filter with a filter element and filter housing of a filter
KR101566110B1 (ko) * 2014-06-27 2015-11-04 쌍용자동차 주식회사 자동차용 에어클리너 어셈블리
WO2017139454A1 (fr) * 2016-02-10 2017-08-17 United Air Specialists, Inc. Filtre emboîté à utiliser dans une unité de coalesceur de buée
US11020701B2 (en) 2017-01-30 2021-06-01 Mann+Hummel Gmbh Filter element having optimized flow control
DE102017006074A1 (de) * 2017-06-28 2019-01-03 Mann+Hummel Gmbh Flachfilterelement, insbesondere zur Gasfiltration

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