WO2019042823A1 - Étage de coalesceur d'un élément filtrant d'un filtre à carburant, élément filtrant et filtre à carburant - Google Patents

Étage de coalesceur d'un élément filtrant d'un filtre à carburant, élément filtrant et filtre à carburant Download PDF

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Publication number
WO2019042823A1
WO2019042823A1 PCT/EP2018/072544 EP2018072544W WO2019042823A1 WO 2019042823 A1 WO2019042823 A1 WO 2019042823A1 EP 2018072544 W EP2018072544 W EP 2018072544W WO 2019042823 A1 WO2019042823 A1 WO 2019042823A1
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WO
WIPO (PCT)
Prior art keywords
filter
koaleszerstufe
coalescing
stage
hollow body
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/EP2018/072544
Other languages
German (de)
English (en)
Inventor
Sieghard Pietschner
Moritz Dorschel
Marcus Wegmann
Andreas Schüttpelz
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.)
Hengst SE and Co KG
Original Assignee
Hengst SE and Co KG
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 Hengst SE and Co KG filed Critical Hengst SE and Co KG
Publication of WO2019042823A1 publication Critical patent/WO2019042823A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/08—Thickening liquid suspensions by filtration
    • B01D17/10—Thickening liquid suspensions by filtration with stationary filtering elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/24—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by water separating means
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • F02M37/34—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements by the filter structure, e.g. honeycomb, mesh or fibrous

Definitions

  • the invention relates to a Koaleszera filter insert of a fuel filter, in particular a diesel fuel filter, wherein the Koaleszercut consists of a hollow body of a fuel-permeable coalescing medium, in which small water droplets coalesced to larger water droplets and then delivered to the fuel flowing out of the hollow body at a flow with water droplet-containing fuel are.
  • the invention relates to a filter insert of a fuel filter, in particular a diesel fuel filter, with a particle filter stage, a Koaleszercut and a screening stage.
  • the invention relates to a fuel filter, in particular diesel fuel filter, with a filter insert, which has seen in the flow direction successively a particle filter stage, a Koaleszercut and a screening stage.
  • the document DE 10 201 1 120 647 A1 describes a fuel filter for fuel, in particular diesel fuel, an internal combustion engine, in particular of a motor vehicle, and a filter element of the same.
  • a housing has at least one fuel inlet for fuel to be purified, at least one fuel outlet for purified fuel, and at least one water outlet for water separated from the fuel.
  • the filter element is arranged, which separates the fuel inlet close to the fuel outlet.
  • the filter element has a filter medium designed as a hollow body, which can be flowed through to filter the fuel from the inside to the outside or from the outside to the inside.
  • the filter element has a coalescing medium designed as a hollow body for separating water contained in the fuel.
  • the coalescing medium is arranged in the flow path of the fuel behind the filter medium, surrounding it or in the interior space bounded by it.
  • the coalescing medium comprises at least one regenerated fiber coalescing layer of one of Coalescing water-suitable coalescing material having a weight fraction of at least 20% regenerated fibers, preferably at least 50%.
  • the regenerated fibers of the coalescing material of the at least one regenerated fiber coalescing layer are cellulose lyocell fibers or viscose fibers.
  • the task is to provide a Koaleszeris of the aforementioned type, which is inexpensive to produce and yet it ensures a high efficiency in the separation of water.
  • a corresponding filter insert of a fuel filter and a fuel filter should be specified.
  • the coalescing stage according to the invention need not be supported and supported by a supporting or supporting body to be produced separately and to be connected to the hollow body from the coalescing medium.
  • the coalescing medium is preferably a filter paper.
  • the coalescing medium according to the invention is a filter paper, a very compact design of the coalescing stage is made possible, since a filter paper is thin in comparison to conventional coalescing media.
  • suitable filter paper as a particulate filter material is available on the market at low cost, which contributes significantly to low production costs of Koaleszercut.
  • good efficiencies in water separation from the fuel are achieved with the coalescing medium consisting of filter paper according to the invention, which is achieved even with relatively high flow velocities of the fuel.
  • the main constituent of the coalescing medium with more than 50% by weight of the coalescing medium is cellulose fibers. These fibers provide a good coalescing effect and are well suited for the self-supporting design of the hollow body.
  • the coalescent medium preferably contains less than 50% by weight of polymer fibers which promote the coalescing action and contribute to the self-supporting design of the hollow body.
  • the fibers of the coalescing medium are wet-laid and resin-bound.
  • the coalescing medium be hydrophilic. Processing steps for the hydrophilic finish of the coalescing medium can be carried out with relatively little effort, for example in the form of spraying or dipping to form a suitable coating.
  • the filter paper as polymer fibers fibers from one or more of the plastics polyethylene (PE), polypropylene (PP), polyamide (PA), polyethylene terephthalate (PET), polybutylene terephthalate (PBT), polytetrafluoroethylene (PTFE), polyphenylene sulfide (PPS) and polyetheretherketone (PEEK).
  • PE polyethylene
  • PP polypropylene
  • PA polyamide
  • PET polyethylene terephthalate
  • PBT polybutylene terephthalate
  • PTFE polytetrafluoroethylene
  • PPS polyphenylene sulfide
  • PEEK polyetheretherketone
  • the fibers of the coalescing medium have a fiber diameter range of 0.1-50 ⁇ m, preferably 0.5-30 ⁇ m, particularly preferably 1-30 ⁇ m.
  • the fibers of the coalescing medium have a mean fiber diameter of 1 to 50 ⁇ m, preferably of 5 to 40 ⁇ m, particularly preferably of 10 to 30 ⁇ m.
  • the coalescing medium has a pore size range of 0.2-120 ⁇ m, preferably 1-100 ⁇ m, particularly preferably 2-90 ⁇ m.
  • a further embodiment provides that the coalescing medium has a mean pore size of 5 to 90 ⁇ m, preferably 10 to 70 ⁇ m, particularly preferably 20 to 60 ⁇ m.
  • the coalescing medium has an MFP value (average flow pore size) on the average of 1 to 1000 ⁇ m, preferably of 3 to 80 ⁇ m, particularly preferably of 40 to 70 ⁇ m.
  • the coalescing medium of the coalescing stage is hydrophilic.
  • the coalescing medium should have a hydrophobicity by water-tinting test (3M test, not standardized in accordance with the Olnot test DIN ISO 14419) with an isopropanol content of 15% by weight, preferably 20% by weight preferably from 25% by weight.
  • the invention proposes in that the coalescence medium has an air permeability of 1 to 3,000 l / m 2 s, preferably 5 to 2,500 l / m 2 s, particularly preferably 500 to 2,000 l / m 2 s, at a pressure difference of 200 Pa.
  • the coalescence medium may be multi-layered with up to five medium layers, preferably multi-layered with up to three medium layers, particularly preferably single-layer with a single medium layer.
  • the / each layer of the coalescing medium measured at a contact pressure of 100 kPa, has a thickness of 0.1-10 mm, preferably 0.2-5 mm, particularly preferably 0, 5-1.5mm.
  • a good suitability for the Koaleszerbone results when the coalescer has a basis weight of 10 - 400 g / m 2 , preferably from 50 to 300 g / m 2 , particularly preferably from 90 to 200 g / m 2 .
  • the coalescing medium has a bending resistance according to Gurley (Tappi T-543) of 8,000-150 mg, preferably of 5,000-150 mg, particularly preferably of 3,000. 150 mg.
  • Gurley Ta T-543
  • the bending resistance even in the wet state of the coalescing medium which occurs during operation, sufficiently large bending resistances still result for a self-supporting hollow body.
  • the coalescing medium should contain up to 49.9% by weight, preferably up to 30% by weight, more preferably up to between 5 and 10% by weight.
  • Glass fibers and / or metal fibers are preferred.
  • a further improvement of the coalescing effect of the coalescing stage in particular with regard to the separation of particularly fine water droplets from the fuel, can be achieved by rendering the coalescing medium hydrophobic on one side, the hydrophobically equipped side of the coalescing medium forming its inflow side in use. Furthermore, it is provided for the coalescing stage that the coalescing medium has a porosity with a gradient in the direction of flow, the porosity increasing in the direction of flow.
  • the porosity is advantageously adapted to the increasing in the flow direction of the coalescing medium size of the water droplets.
  • the hollow body of the coalescing stage is wrapped by a conventional coalescing fleece.
  • the coalescing stage formed from the hollow body of coalescing medium is a self-supporting hollow body which, in most applications, does not require an additional supporting body.
  • the coalescence stage formed from the hollow body of coalescing medium may have a lattice-shaped or perforated hollow-cylindrical support body on whose outer or inner circumference, according to the respective flow direction in operation, the hollow body is present and supported. Since the hollow body from the Koaleszermedium already has a certain stability, the optionally provided support body can be made comparatively easy and space-saving to accommodate large loads.
  • the solution of the second, the filter element part of the object succeeds according to the invention with a filter cartridge of a fuel filter, in particular a diesel fuel filter, with a particle filter stage, with a Koaleszercut and with a screening stage, which is characterized by a Koaleszercut according to any one of claims 1 to 23.
  • the coalescer stage and the particulate filter stage can beneficially interact in different ways.
  • the particle filter stage is formed by a filter material body folded in a star shape into a ring, that the Koaleszeris forming hollow body from the coalescing medium is round in cross-section, arranged in the filter body and tube with its outer circumference on the radially inner pleated tips of the filter cloth this supporting loosely abuts or fixed, in particular glued or thermally joined, and that the filter insert in Remaining non-supporting body is executed.
  • the coalescing stage advantageously performs at the same time a function as an inner support body for the filter material body of the particle filter stage and protects it during its flow radially from outside to inside against collapse, without the need for a separate support body.
  • the particulate filter stage is formed by a radially folded into a ring filter body, that the Koaleszeris forming hollow body from the Koaleszermedium is folded in a star shape with a same distance to the filter cloth body wrinkle and smaller fold depth that the radially inside lying pleat tips of the filter cloth body extending into radially outwardly facing Faltentäler of the Koaleszerissue forming hollow body and resting against the hollow body loosely or fixed to this, in particular glued or thermally joined, and that the filter insert is otherwise carried out supporting body free.
  • the Koaleszercut advantageous at the same time has a function as an inner support body for the particle filter stage.
  • the folds of the filter material body are fixed in their distance from one another in the circumferential direction, which prevents an undesirable, the filter surface shrinking juxtaposition of folds of the filter cloth body.
  • the particle filter stage is formed by a star shaped to a ring filter body, that the Koaleszeris forming hollow body from the Koaleszermedium congruent with the filter material body is folded in a star shape that the Koaleszerissue forming hollow body from the coalescing flat on the filter cloth this supporting rests and that the filter cartridge is otherwise carried out supportive body.
  • the coalescing stage advantageously supports the particle filter stage.
  • the materials for the particle filter stage and the Koaleszerlie can be stacked before folding in order to then transform them together in a single folding process to the star-shaped hollow body or ring.
  • the filter insert according to the invention can alternatively also be embodied such that the filter element is formed by a star shaped filter body, that the hollow body forming the coalescing stage is folded in a star shape from the coalescing medium with a reduced diameter relative to the filter body and that the filter body and the Koaleszeris forming hollow body of coalescing medium are arranged at a radial distance from each other.
  • This embodiment is particularly useful when the particle filter stage requires no support or has its own support body.
  • the thickness of the coalescing medium of Koaleszercut is not greater than the thickness of the filter cloth of the filter cloth body of the particle filter stage.
  • the coalescing stage can be formed from a filter paper, it is even possible for the coalescing stage to simultaneously form the particle filter stage of the filter insert.
  • the coalescing stage thus takes over two essential functions of the filter insert, which saves individual parts, installation space and production costs.
  • the filter cartridge For applications of the filter cartridge in which this is exposed to particularly high mechanical loads, it is provided that it has a lattice-shaped or perforated hollow cylindrical support body, seen in the radial direction rests supporting either on the inner circumference of the filter cloth of the particle filter stage or on the inner circumference of the hollow body of Koaleszernote.
  • An arrangement of the support body on the inner circumference of the filter material body of the particle filter stage is expedient if the Koaleszerhand is arranged at a radial distance from the particle filter stage.
  • An arrangement of the support body on the inner circumference of the hollow body of the Koaleszercuta is useful when the Koaleszerease is arranged without radial distance from the particle filter stage or radially supported there along pleat tips.
  • the flow direction of the filter insert extends radially from outside to inside.
  • the opposite direction of flow of the support body is then of course arranged radially outward of the filter material body of the particle filter stage or from the hollow body of Koaleszernote.
  • the screening stage forms a radially innermost part of the filter insert and that between the inner circumference of the hollow body of the Koaleszernote and the outer periphery of a hollow cylindrical screen of the screening stage, an annular space for gravity separation of water droplets is kept free.
  • the annular space expediently has such a large free flow cross-section that there is a relevant reduction in the flow velocity of the fuel in order to ensure sufficient residence time for an effective separation of the gravity of the water droplets which are now enlarged.
  • the flow direction of the filter insert as usual, extends radially from outside to inside.
  • the screening stage is then of course arranged radially on the outside of the hollow body of the coalescing stage.
  • the invention proposes a fuel filter, in particular diesel fuel filter, before with a filter insert, as seen in the flow direction successively a particle filter stage, a Koaleszerprocess and a screening stage and which is characterized by a filter cartridge according to one of claims 25 to 33rd
  • FIG. 1 shows a fuel filter with a filter insert in a schematic longitudinal section
  • FIGS. 16 and 17 show the filter insert without end disks in an eighth embodiment, once in longitudinal section and once in cross section,
  • FIGS. 18 and 19 show the filter insert without end disks in a ninth embodiment, once in longitudinal section and once in cross section,
  • FIGS 22 and 23 the filter element without end plates in an eleventh embodiment, once in longitudinal section and once in cross section.
  • FIG. 1 of the drawing shows a fuel filter 1, in particular a diesel fuel filter, with a filter element 2 accommodated interchangeably therein, in a schematic longitudinal section.
  • the fuel filter 1 here has a substantially hollow cylindrical housing 10 with a liquid-tight connected, but detachable housing lower part 10 '.
  • a raw fluid inlet 11 designed as a connecting piece through which, as indicated by the FIG. dashed arrow indicated, fuel to be filtered into the interior of the filter housing 10 can be introduced.
  • a tubular clean fluid outlet 12 Centrally connected to the upper side of the filter housing 10 is a tubular clean fluid outlet 12, which protrudes into the interior of the filter housing 10 as a pipe socket 14 and can be discharged by the fuel filtered, as indicated by a further dashed arrow, and fed, for example, to an internal combustion engine.
  • the fuel filter 1 serves to filter out of the fuel flowing through it for a dirt particles and to separate the other entrained in the fuel water droplets.
  • the filter element 2 has several, here three stages, namely in the flow direction of the fuel successively a particle filter stage 3, a Koaleszeris 4 and a screening stage 5. Between the Koales- shreds 4 and the screening stage 5 is an open towards the bottom annular space. 6
  • a water outlet 13 with an associated valve 13 'arranged at the lowest point of the housing lower part 10' if necessary the water collected in the water collecting chamber 15 can be drained off.
  • the particle filter stage 3 consists of a conventional, zigzag-shaped, star-shaped, hollow filter material body 30 made of a suitable filter material, such as filter paper.
  • the coalescing stage 4 arranged radially inward of the particle filter stage 3 consists of a hollow body 40 of an at least single-layer coalescing medium, which in this case has the shape of a tube which is round in cross-section. Other forms are possible, as will be explained later.
  • the coalescing medium has several specific and particular properties.
  • the coalescence medium here is a filter paper whose Main component with more than 50 wt .-% cellulose fibers.
  • the coalescent medium contains less than 50% by weight of polymer fibers.
  • the fibers of the coalescing medium are wet laid and resin bound and the coalescent medium is hydrophilic.
  • the coalescing medium has a bending resistance sufficient for a self-supporting hollow body in order to be able to execute the hollow body 40 on its own and the filter element 2 as a whole without a separate support body.
  • the screening stage 5 consists of a tubular sieve 50, which is arranged concentrically in the hollow body 40 of coalescing medium at a radial distance therefrom.
  • the screen 50 has the well-known property of allowing fuel to pass through, but being impermeable to the larger water droplets formed in the hollow body 40 of coalescing medium.
  • the tubular sieve 50 is closed.
  • the filter material body 30 and the hollow body 40 made of coalescent medium are bordered together at the end by a respective first, upper end disk 21 and a second, lower end disk 21. With the first, upper end plate 21, the screen 50 is also connected at its upper end side.
  • the first, upper end disk 21 has an outer diameter which is slightly larger than the outer diameter of the filter cloth body 30, and is liquid-tightly connected to the filter cloth body 30, the hollow body 40 of Koaleszermedium and the screen 50, for example, thermally welded. Furthermore, the first end plate 21 is annular and has in its center surrounded by a circumferential seal 21 'opening, by means of which the filter element 2 is sealingly attached to the inside of the filter housing 10, the clean liquid outlet 12 forming pipe socket 14.
  • second end plate 22 is also designed here annular and has an outer diameter which is slightly smaller than the inner diameter of the filter housing 10. Between the outer periphery of the second end plate 22 and the inner periphery of the filter housing 10 is a further circumferential seal 22 ' arranged. In this way, a raw side connected to the raw liquid inlet 1 1 and a clean side of the fuel filter 1 connected to the clean liquid outlet 12 are separated from one another. A flow of fuel from the raw side to the clean side is only possible by the successive arrangement of filter material body 30, hollow body 40 of coalescent medium and sieve 50.
  • the lower housing part 10 ' is released from the rest of the housing 10, after which the filter housing 10 is open on the underside.
  • a seal 16 running between them is used for sealing the connection point between the housing 10 and the housing lower part 10 '.
  • the fuel together with the water droplets entrained therein, flows through the hollow body 40 of the coalescing stage 4, during which coalescing stage 4 coalesces small water droplets into significantly larger water droplets due to their coalescing action, ie, they are combined.
  • These larger water droplets are guided with the fuel in the radial direction inwards from the hollow body 40 of the coalescing stage 4 into the annular space 6.
  • the annular space 6 lying between the inner circumference of the hollow body 40 made of coalescent medium and the outer circumference of the wire 50 is open at the bottom and is in free flow communication with the water collection chamber 15.
  • the annular space 6 has a free flow cross section, which is responsible for a significant slowing down of the flow rate of the fuel and thus ensures a greater residence time of the fuel and the entrained larger water droplets in the annular space 6.
  • an effective separation of the previously enlarged water droplets on the one hand by gravity separation and on the other by deposition on the outer circumference of the screen 50 done.
  • the separated water droplets fall under the influence of gravity due to their height ren specific weight in the fuel down and collect in the water collection chamber 15 in the lower housing part 10 'in the lower region of the filter housing 10th
  • the water collecting space 15 When the water collecting space 15 is filled with water, it can be discharged by opening the valve 13 'through the water outlet 13.
  • the filter insert 2 can be designed in different ways, which will be explained in more detail below with reference to several examples.
  • Figures 2 to 23 of the drawing show in pairs each eleven different versions of the filter element 2, each without end plates and each once in the longitudinal section below on the drawing page and once in cross section at the top of the drawing page.
  • the filter material body 30 of the particle filter stage 3 is folded in a star shape into a hollow body, as is known per se.
  • Centrally through the filter element 2 extends the longitudinal central axis 20, to which the filter insert 2 is rotationally symmetrical.
  • the hollow body 40 Radially inside of the filter material body 30 is the hollow body 40 made of the coalescing medium, which forms the coalescing stage 4.
  • the hollow body 40 is here single-layered and has the shape of a round tube in cross-section. Radially inwardly facing pleat tips 31 of the star-shaped folded filter material body 30 here lie loosely on the outer circumference of the hollow body 40 of coalescing medium.
  • the hollow body 40 is designed to be stable and self-supporting to such an extent that it can additionally assume a support function for the filter material body 30.
  • the second embodiment of the filter cartridge 2 according to Figures 4 and 5 differs from the first embodiment according to Figures 2 and 3, characterized in that now between the inwardly facing pleat tips 31 of the filter cloth 30 and the outer periphery of the hollow body 40 of Koaleszermedium a certain, relatively small radial distance exists.
  • the filter material body 30 is thus radially spaced from the hollow body 40 of coalescing medium.
  • the filter material body 30 can deform radially inwardly to a limited extent, concretely shrink in its inner diameter, whereby its pleat tips 31 then in contact with the outer periphery of the hollow body 40 arrive. Further deformation or even collapse of the filter cloth body 30 is then prevented by the supporting function of the self-supporting hollow body 40 of the coalescing stage 4.
  • the filter element 2 according to FIGS. 4 and 5 corresponds to the first exemplary embodiment of the filter element 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • the third embodiment of the filter cartridge 2 according to FIGS. 6 and 7 differs from the first exemplary embodiment of the filter cartridge 2 according to FIGS. 2 and 3 in that now the coalescing stage 40 has a hollow body 40 of coalescing medium consisting of two concentric media layers 41, 42. Due to the two-layered nature of the hollow body 40 of the coalescing stage 4, the coalescing effect of the coalescing stage 4 can be increased.
  • the radially inner medium layer 42 of the hollow body 40 may be a filter paper layer as a coalescing medium and the radially outer medium layer 41 may be a conventional coalescing web wound around the inner medium layer 42.
  • the filter insert 2 according to FIGS. 6 and 7 corresponds to the first exemplary embodiment of the filter insert 2 according to FIGS. 2 and 3, to whose description reference is made in this regard.
  • the fourth embodiment of the filter cartridge 2 according to Figures 8 and 9 differs from the first embodiment of the filter cartridge 2 according to Figures 2 and 3 and of the third embodiment of the filter cartridge 2 according to Figures 6 and 7 in that now the Koaleszercut 4 one has four concentric media layers 41, 42, 43 and 44 existing hollow body 40 coalescing medium.
  • the coalescing effect of the coalescing stage 4 can be further increased.
  • the media of the individual media layers 41 to 44 can thereby be identical with each other; Alternatively, two or more different media may be used for the media layers 41-44.
  • the filter insert 2 according to FIGS. 8 and 9 corresponds to the first exemplary embodiment of the filter insert 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • the fifth exemplary embodiment of the filter insert 2 according to FIGS. 10 and 11 differs from the first exemplary embodiment of the filter insert 2 according to FIGS. 2 and 3 in that the radially inwardly pointing pleat tips 31 of the star-shaped folded filter material body 30 are here on the outer circumference of the hollow body 40 Koaleszermedium not loosely, but connected to this by means of bonds 32 and are fixed in position.
  • the hollow body 40 is also stable and self-supporting executed in such a degree that it can additionally take over a support function for the filter material body 30.
  • the star-shaped folded filter material body 30 is fixed in its shape and it is so a the filter surface available to reduce the application of adjacent folds of the filter cloth body 30 prevents each other.
  • the filter insert 2 according to FIGS. 10 and 11 corresponds to the first exemplary embodiment of the filter insert 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • the sixth exemplary embodiment of the filter insert 2 according to FIGS. 12 and 13 differs from the first exemplary embodiment according to FIGS. 2 and 3 in that the hollow body 40 of coalescing medium is now folded in a star shape and that between the radially inwardly pointing pleat tips 31 of the star-shaped folded Filter material body 30 and the outer periphery of the hollow body 40 of coalescing medium is a relatively large radial distance.
  • the self-supporting hollow body 40 has a much larger compared to a round tube surface, but no support function for the filter material body 30th
  • the filter element 2 according to FIGS. 12 and 13 corresponds to the first exemplary embodiment of the filter element 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • the seventh embodiment of the filter cartridge 2 according to FIGS. 14 and 15 differs from the sixth exemplary embodiment according to FIGS. 12 and 13 in that the star-shaped folded hollow body 40 of coalescing medium now supports the radially inwardly pointing pleat tips 31 of the star-shaped folded filter material body 30.
  • the hollow body 40 is folded with an identical with the filter cloth body pleat spacing in the circumferential direction and has a diameter such that the radially inwardly facing pleat tips 31 of the filter cloth 30 protrude into radially outwardly open Faltentäler the hollow body 40 and there supported on the self-supporting hollow body 40 ,
  • the hollow body 40 has a much larger compared to a round tube surface and at the same time a support function and Faltenfixierfunktion for the filter material body 30th
  • the filter element 2 according to FIGS. 14 and 15 corresponds to the first exemplary embodiment of the filter element 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • the eighth exemplary embodiment of the filter insert 2 according to FIGS. 16 and 17 differs from the seventh exemplary embodiment according to FIGS. 14 and 15 in that now the filter material body 30 and the hollow body 40 of coalescing medium rest against each other over their entire surface and are folded together to form a star-shaped body in cross-section , Also in this embodiment, the hollow body 40 has a much larger compared to a round tube surface and at the same time a support function for the filter material body 30th
  • the filter insert 2 according to FIGS. 16 and 17 corresponds to the first exemplary embodiment of the filter insert 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • the ninth exemplary embodiment of the filter insert 2 according to FIGS. 18 and 19 differs from the first exemplary embodiment according to FIGS. 2 and 3 in that a lattice-shaped hollow cylindrical support body 7, preferably an injection-molded part made of plastic or a metal lattice, is now directly radially inwardly of the hollow body 40 made of coalescent medium , is arranged.
  • the hollow body 40 rests with its inner circumference on the outer circumference of the support body 7.
  • the radially after inside facing pleat tips 31 of the filter material body 30 are here loosely on the outer circumference of the hollow body 40 at.
  • the filter element 2 according to FIGS. 18 and 19 corresponds to the first exemplary embodiment of the filter element 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • the tenth embodiment of the filter cartridge 2 according to Figures 20 and 21 differs from the ninth embodiment of Figures 18 and 19 in that now between the inwardly facing pleat tips 31 of the filter cloth body 30 and the outer periphery of the hollow body 40 of Koaleszermedium a certain, relatively small radial distance exists.
  • an identical support body 7 is arranged here as in the example of FIGS. 18 and 19 described above.
  • the filter cloth body 30 is radially spaced from the hollow body 40 of coalescing medium.
  • the filter material body 30 can deform radially inwardly to a certain extent, concretely reduce in its inner diameter, whereby its pleat tips 31 then in contact with the outer periphery of the hollow body 40 arrive. Further deformation or even collapse of the filter material body 30 is then reliably prevented by the supporting function of the hollow body 40 of the coalescing stage 4 and of the support body 7.
  • the filter insert 2 according to FIGS. 20 and 21 corresponds to the first exemplary embodiment of the filter insert 2 according to FIGS. 2 and 3, to the description of which reference is made in this respect.
  • Figures 22 and 23 show the filter element 2 without end plates in an eleventh and last embodiment, once in longitudinal section and once in cross section.
  • character- teristic for this embodiment of the filter element 2 is that here consists of filter paper as a coalescing medium self-supporting hollow body 40 of the coalescing stage 4 at the same time the filter material body 30 of the particle filter stage 3.
  • the hollow body 40 is capable of exerting, in addition to the coalescing effect on the water droplets entrained in the fuel, also a filter function for dirt particles entrained in the fuel.
  • the filter element 2 has very few components and a particularly compact design.
  • the arranged in the interior of the combined Filterstoff- and hollow body 30, 40 sieve 50 corresponds to the previously described embodiments. Between the combined Filterstoff- and hollow body 30, 40 on the one hand and the sieve 50 on the other hand is also the annular gap 6 for the gravity separation of water droplets.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

L'invention concerne un étage de coalesceur (4) d'un élément filtrant (2) d'un filtre à carburant (1), en particulier d'un filtre à un carburant diesel, l'étage de coalesceur (4) étant constitué par un corps creux (40) en un support coalesceur perméable au carburant, dans lequel, lors du passage d'un flux de carburant contenant des gouttes d'eau, de petites gouttes d'eau peuvent être coalescées en gouttes d'eau plus grandes et ensuite être dégagées du carburant s'écoulant hors du corps creux (40). L'étage de coalesceur (4) selon l'invention est caractérisé en ce que le support coalesceur est conçu comme un corps creux autoportant (40) et en ce que le support coalesceur présente une résistance à la flexion suffisante pour un corps creux autoportant (40). En outre, l'invention concerne un élément filtrant (2) pourvu d'un tel étage de coalesceur (4) ainsi qu'un filtre à carburant (1) pourvu d'un tel élément filtrant (2).
PCT/EP2018/072544 2017-08-30 2018-08-21 Étage de coalesceur d'un élément filtrant d'un filtre à carburant, élément filtrant et filtre à carburant Ceased WO2019042823A1 (fr)

Applications Claiming Priority (2)

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DE102017119926.8 2017-08-30
DE102017119926.8A DE102017119926A1 (de) 2017-08-30 2017-08-30 Koaleszerstufe eines Filtereinsatzes eines Kraftstofffilters, Filtereinsatz und Kraftstofffilter

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WO2019042823A1 true WO2019042823A1 (fr) 2019-03-07

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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112049743A (zh) * 2020-09-28 2020-12-08 江西瑞黔汽车配件有限公司 一种油水分离、精密过滤燃油滤清器

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102019215867A1 (de) 2019-10-15 2021-04-15 Mahle International Gmbh Filtereinrichtung

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0465424A1 (fr) * 1990-07-05 1992-01-08 Filtrox-Werk AG Filtre à lit épais, procédé de fabrication d'une couche de filtration et module de filtration
DE102011120647A1 (de) 2011-12-09 2013-06-13 Mann + Hummel Gmbh Kraftstofffilter einer Brennkraftmaschine und Filterelement eines Kraftstofffilters
DE102015003915A1 (de) * 2014-04-28 2015-11-12 Mann + Hummel Gmbh Abscheideelement einer Abscheidevorrichtung zur Abscheidung wenigstens eines fluiden Mediums aus einem zu behandelnden Fluid und Abscheidevorrichtung
WO2017007348A1 (fr) * 2015-07-08 2017-01-12 Amazon Filters Spółka z Ograniczoną Odpowiedzialnością Système de séparation pour l'élimination simultanée de particules solides et de gouttelettes liquides en suspension dans un autre liquide

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8833567B2 (en) * 2008-01-16 2014-09-16 Ahlstrom Corporation Coalescence media for separation of water-hydrocarbon emulsions
KR20110062104A (ko) * 2009-12-02 2011-06-10 현대자동차주식회사 디젤연료필터
JP2012062771A (ja) * 2010-09-14 2012-03-29 Denso Corp 燃料フィルタ
DE102014000903B4 (de) * 2014-01-21 2021-08-12 Hydac Filtertechnik Gmbh Filterelement und Filtervorrichtung
DE102015218185A1 (de) * 2015-09-22 2017-03-23 Mahle International Gmbh Filtermedium

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0465424A1 (fr) * 1990-07-05 1992-01-08 Filtrox-Werk AG Filtre à lit épais, procédé de fabrication d'une couche de filtration et module de filtration
DE102011120647A1 (de) 2011-12-09 2013-06-13 Mann + Hummel Gmbh Kraftstofffilter einer Brennkraftmaschine und Filterelement eines Kraftstofffilters
DE102015003915A1 (de) * 2014-04-28 2015-11-12 Mann + Hummel Gmbh Abscheideelement einer Abscheidevorrichtung zur Abscheidung wenigstens eines fluiden Mediums aus einem zu behandelnden Fluid und Abscheidevorrichtung
WO2017007348A1 (fr) * 2015-07-08 2017-01-12 Amazon Filters Spółka z Ograniczoną Odpowiedzialnością Système de séparation pour l'élimination simultanée de particules solides et de gouttelettes liquides en suspension dans un autre liquide

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN112049743A (zh) * 2020-09-28 2020-12-08 江西瑞黔汽车配件有限公司 一种油水分离、精密过滤燃油滤清器

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