WO2014009060A1 - Wasserabscheidevorrichtung, filterelement eines kraftstofffilters und kraftstofffilter - Google Patents
Wasserabscheidevorrichtung, filterelement eines kraftstofffilters und kraftstofffilter Download PDFInfo
- Publication number
- WO2014009060A1 WO2014009060A1 PCT/EP2013/061549 EP2013061549W WO2014009060A1 WO 2014009060 A1 WO2014009060 A1 WO 2014009060A1 EP 2013061549 W EP2013061549 W EP 2013061549W WO 2014009060 A1 WO2014009060 A1 WO 2014009060A1
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- WIPO (PCT)
- Prior art keywords
- fuel
- medium
- water
- separation
- filter
- Prior art date
Links
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 90
- 239000000446 fuel Substances 0.000 title claims abstract description 83
- 229930195733 hydrocarbon Natural products 0.000 claims abstract description 42
- 150000002430 hydrocarbons Chemical class 0.000 claims abstract description 42
- 239000007788 liquid Substances 0.000 claims abstract description 42
- 239000004215 Carbon black (E152) Substances 0.000 claims abstract description 40
- 238000001556 precipitation Methods 0.000 claims abstract description 20
- 238000004581 coalescence Methods 0.000 claims abstract description 18
- 238000002485 combustion reaction Methods 0.000 claims abstract description 10
- 230000002209 hydrophobic effect Effects 0.000 claims abstract description 7
- 238000000926 separation method Methods 0.000 claims description 135
- 229920000295 expanded polytetrafluoroethylene Polymers 0.000 claims description 23
- 230000002093 peripheral effect Effects 0.000 claims description 8
- -1 polytetrafluoroethylene Polymers 0.000 claims description 8
- 229920001343 polytetrafluoroethylene Polymers 0.000 claims description 7
- 239000004810 polytetrafluoroethylene Substances 0.000 claims description 7
- 230000008021 deposition Effects 0.000 claims description 5
- 238000001914 filtration Methods 0.000 claims description 5
- 239000002283 diesel fuel Substances 0.000 description 21
- 238000011144 upstream manufacturing Methods 0.000 description 9
- 239000012528 membrane Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 7
- 239000002245 particle Substances 0.000 description 7
- 239000000835 fiber Substances 0.000 description 6
- 239000011148 porous material Substances 0.000 description 6
- 230000008901 benefit Effects 0.000 description 5
- 239000004744 fabric Substances 0.000 description 4
- 230000005484 gravity Effects 0.000 description 4
- 238000009434 installation Methods 0.000 description 4
- 238000012423 maintenance Methods 0.000 description 4
- 239000004698 Polyethylene Substances 0.000 description 3
- 238000004140 cleaning Methods 0.000 description 3
- 229920000573 polyethylene Polymers 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 238000000034 method Methods 0.000 description 2
- 239000004745 nonwoven fabric Substances 0.000 description 2
- 239000003921 oil Substances 0.000 description 2
- 239000004033 plastic Substances 0.000 description 2
- 229920003023 plastic Polymers 0.000 description 2
- 230000008569 process Effects 0.000 description 2
- 238000000746 purification Methods 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 230000004888 barrier function Effects 0.000 description 1
- 239000011324 bead Substances 0.000 description 1
- 229920002678 cellulose Polymers 0.000 description 1
- 239000001913 cellulose Substances 0.000 description 1
- 239000011248 coating agent Substances 0.000 description 1
- 238000000576 coating method Methods 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000013461 design Methods 0.000 description 1
- 239000008187 granular material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000035699 permeability Effects 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 239000005871 repellent Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229920002994 synthetic fiber Polymers 0.000 description 1
- 239000002759 woven fabric Substances 0.000 description 1
Classifications
-
- 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
-
- 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
- B01D17/02—Separation of non-miscible liquids
- B01D17/04—Breaking emulsions
- B01D17/045—Breaking emulsions with coalescers
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
- B01D29/50—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition
- B01D29/56—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection
- B01D29/58—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with multiple filtering elements, characterised by their mutual disposition in series connection arranged concentrically or coaxially
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D36/00—Filter circuits or combinations of filters with other separating devices
- B01D36/003—Filters in combination with devices for the removal of liquids
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D63/00—Apparatus in general for separation processes using semi-permeable membranes
- B01D63/14—Pleat-type membrane modules
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D71/00—Semi-permeable membranes for separation processes or apparatus characterised by the material; Manufacturing processes specially adapted therefor
- B01D71/06—Organic material
- B01D71/30—Polyalkenyl halides
- B01D71/32—Polyalkenyl halides containing fluorine atoms
- B01D71/36—Polytetrafluoroethene
-
- C—CHEMISTRY; METALLURGY
- C10—PETROLEUM, GAS OR COKE INDUSTRIES; TECHNICAL GASES CONTAINING CARBON MONOXIDE; FUELS; LUBRICANTS; PEAT
- C10G—CRACKING HYDROCARBON OILS; PRODUCTION OF LIQUID HYDROCARBON MIXTURES, e.g. BY DESTRUCTIVE HYDROGENATION, OLIGOMERISATION, POLYMERISATION; RECOVERY OF HYDROCARBON OILS FROM OIL-SHALE, OIL-SAND, OR GASES; REFINING MIXTURES MAINLY CONSISTING OF HYDROCARBONS; REFORMING OF NAPHTHA; MINERAL WAXES
- C10G33/00—Dewatering or demulsification of hydrocarbon oils
- C10G33/06—Dewatering or demulsification of hydrocarbon oils with mechanical means, e.g. by filtration
-
- 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
Definitions
- the invention relates to a Wasserabscheidevoriques, in particular a filter element, in particular a fuel filter of an internal combustion engine, in particular a motor vehicle, for the separation of water from a liquid hydrocarbon, in particular fuel or oil, which is designed as a hollow body Koaleszenzmedium for coalescence of water droplets from the liquid hydrocarbon and in the flow direction of the liquid hydrocarbon behind the coalescence medium and, for example, in its interior or surrounding a hydrophobic designed as a hollow body, permeable for the liquid hydrocarbon separation medium for the separation of water droplets contained in the liquid hydrocarbon has.
- the invention relates to a filter element of a fuel filter of an internal combustion engine, in particular of a motor vehicle, with a Wasserabscheidevoriques for filtering a liquid fuel and for the separation of water from the fuel.
- the invention also relates to a fuel filter of an internal combustion engine, in particular of a motor vehicle, having a housing which has at least one fuel inlet for fuel to be cleaned, at least one fuel outlet for purified fuel and at least one water outlet for water separated from the fuel.
- US 20080105629 A1 discloses a water / fuel separation system for removing water from a liquid hydrocarbon.
- the water / fuel separation system includes a filter housing and a separation section disposed in the filter housing. At the separation section, in the liquid Hydrocarbon contained, water droplets retained and separated.
- the invention has for its object to design a Wasserabscheidevorraum, a filter element and a fuel filter of the type mentioned, with the / a deposition of water from liquid hydrocarbons can be improved. Furthermore, a pressure difference between an inlet side of the liquid hydrocarbon in the Wasserabscheidevortechnik and an outlet side should be reduced as possible.
- the Wasserabscheidevorraum is multi-stage, so that the deposition of water is improved.
- the coalescing medium is arranged at a distance upstream of the separation medium in the flow direction. As it flows through the coalescing medium even the smallest water droplets contained in the liquid hydrocarbon can be separated and combined to form larger water droplets. Large water droplets may be precipitated in the flow direction of the liquid hydrocarbon behind the coalescing medium in the precipitation gap. On the separation medium, water droplets, which get into the precipitation gap with the liquid hydrocarbon and have not yet precipitated there, are retained.
- the precipitation gap In the precipitation gap, the drops of water sink downwards due to their specific weight. If the specific gravity of the hydrocarbon is greater than that of water, the drops of water rise analogously. In this case, the Wasserabscheidevoriques can be arranged vice versa.
- the precipitation gap in the usual installation position of the water separation device, can be aligned vertically so that the water droplets can pass out of the precipitation gap as unhindered as possible.
- the water may in particular be collected in a water collecting space, which may be connected to a water outlet of a housing in which the Wasserabscheidevortechnik is located.
- the coalescing medium and the separation medium can be arranged coaxially. In this way, a uniform expansion of the precipitation gap in Um- direction are possible.
- a flow of the liquid hydrocarbon can be improved, in particular uniformed.
- the pressure ratios within the Wasserabscheidevoriques can be improved.
- a pressure difference between an inlet side and an outlet side of the water separation device can be reduced.
- the separation medium may also rest against the fold back, so that a precipitation gap is formed in the fold pockets of the coalescing medium. This results in the circumferential direction thus more Aussocilspalte or in the circumferential direction partially interrupted by the fold back Aussocilspalt.
- the coalescing medium and the separation medium can be optimized for their respective function. Due to the fact that even the smallest water droplets have already been agglomerated by the coalescence medium and can become larger water droplets, the passage openings in the separation medium can be correspondingly larger. In this way, a pressure loss on the separation medium can be reduced. If, advantageously, the coalescing medium is flowed through from radially inward to outward, the separating medium can be located outside of the coalescing medium and surround it. Alternatively, if advantageously the coalescing medium flows through from radially outside to inside, the separating medium can be located in an interior of the filter medium.
- the separation medium may comprise polytetrafluoroethylene, in particular by a porous media layer of polytetrafluoroethylene, which is preferably expanded polytetrafluoroethylene is formed, wherein the porous media layer in particular forms a film and / or a membrane .
- the film-like separation medium can also be used as a membrane be designated.
- Expanded polytetrafluoroethylene (ePTFE) has water-repellent properties.
- ePTFE is a specially processed form of polytetrafluoroethylene. During processing to ePTFE, the PTFE molecular fibers are oriented, which results in improved strength and cold flow properties in the material compared to non-oriented PTFE.
- An ePTFE film has a greater water repellency than conventional hydrophobic fabrics.
- An ePTFE Film can be provided with high strength and chemical resistance due to the aligned molecular fibers. A film can simply be circumferentially closed, so that the entire precipitation gap can be limited circumferentially with her.
- the ePTFE can be a monodirectional ePTFE in which the molecular fibers are oriented in one direction. Alternatively, it may be multi-directional ePTFE, in which the molecular fibers are oriented in different directions. With multidirectional ePTFE, higher strength and creep resistance in the longitudinal and transverse direction of the film or membrane can be achieved than with monodirectional ePTFE.
- passage openings for the liquid hydrocarbon in the separation medium diameter of about 0.1 ⁇ and 30 ⁇ have to obtain an effective separation of water.
- the passage openings can also be referred to as pores or slots, in particular in the case of an ePTFE film. It has been found that diameter or width between about 5 ⁇ and about 20 ⁇ improve a ratio between a separation efficiency of water from the liquid hydrocarbon and a pressure difference between the inlet side and the outlet side of the separator.
- This advantage results in particular by the upstream coalescence medium, which has, for example, passage openings or pore diameters in the range between 1 ⁇ m and 300 ⁇ m, it being preferred for both small pore and larger pore portions to be present in order to achieve efficient coalescence.
- a shape-stabilizing support body can be provided which can support and / or support the separation medium and which can have passage openings for the liquid hydrocarbon.
- the support body is advantageously formed as a support layer, preferably in the form of a support grid, which is connected in area with the separation medium.
- the separation medium itself may be made of a non-dimensionally stable material.
- the separation medium can be folded or bent together with the support body, thereby stabilizing the separation medium in the folded form.
- a folding of an ePTFE film in combination with the support body can be made more dimensionally stable than a corresponding folding of other hydroprocessors known from the prior art. phobic tissues.
- the focus of the separating medium can be on improving the separation efficiency and reducing the pressure difference between upstream side and downstream side. Its own mechanical dimensional stability does not have to be considered.
- the passage openings of the support body can be chosen correspondingly large to reduce the pressure difference.
- the passage openings in the support body may be larger than the passage openings in the separation medium. In this way, the liquid hydrocarbon can flow through the support body without this having a significant influence on the flow, in particular the pressure loss. Thus, overall, the pressure loss in the Wasserabscheidevoriques can be reduced.
- the support body may advantageously be arranged on the downstream side of the separation medium. In this way, the support body better support the separation medium against the flow direction.
- the support body can also be arranged on the inflow side of the separation medium.
- the separation medium can also be clamped between struts of the support body and thus cover its passage openings.
- the separation medium can be advantageously placed or stretched as a film or membrane on a corresponding peripheral side of the support body.
- the support body from compared to the liquid hydrocarbon, in particular fuel, preferably diesel fuel, resistant, in particular synthetic material be.
- the support body may be made of a plastic, in particular of polyacrylic or polyethylene. Alternatively, it may also be composed of organic, in particular cellulose-based, materials. It can also be a mixed material.
- the support body may advantageously be constructed skeletal or lattice-like. It may advantageously be made from a so-called meltblown process nonwoven fabric, spunbonded fabric, woven fabric, knitted fabric or another type produced nonwoven fabric.
- the passage openings of the support body diameter of approximately between 100 ⁇ to 15 mm have. It has been shown that at the passage openings of the support body with diameters between 100 ⁇ and 15 mm, the support function of the support body for the separation medium can be improved and a pressure loss between upstream and downstream of the support body can be reduced. Through openings with such diameters can influence the Further reduce the supporting body to a flow of the liquid hydrocarbon.
- the diameters of the passage openings can also be referred to as a mesh width, in particular in the case of a grid-like support body.
- the separation medium can have an alternating course over the circumference; in particular, the separation medium can be wavy or zigzag-shaped.
- a film-like or membrane-like separation medium can be correspondingly shaped or folded.
- the film-like or membrane-like separation medium can be applied or mounted on a shaping support body and then molded together with the support body and closed circumferentially.
- the separation medium can be folded into a zigzag shape with the support body and closed circumferentially.
- the separation medium with the support body then has a star-shaped profile. Due to the alternating course of the peripheral side of the separation medium, a surface of the separation medium to be flowed through can be increased while maintaining the space required, in particular comparable external dimensions. By increasing the inflow area, a mechanical surface load when flowing through the separation medium can be reduced.
- the separation medium may have a higher degree of water repellency and thus a smaller water permeability, without necessarily increasing a pressure difference between the inflow side and the outflow side.
- the separation medium can also have a cylindrical course circumferentially instead of an alternating course.
- the cylindrical separating medium may have a round, oval or angular base.
- a filter medium designed as a hollow body can be arranged to filter the liquid hydrocarbon in the direction of flow of the liquid hydrocarbon upstream of the separating medium, surrounding it or in its interior.
- the filter medium in particular particles which contaminate the liquid hydrocarbon can be filtered out, before they get to the separation medium.
- the separation medium can be protected.
- the service life of the separation medium can thus be extended.
- the filter medium can be arranged upstream of the coalescence medium in the flow direction, so that the particles can be filtered out before they reach the coalescence medium.
- the coalescent medium can also be protected from particles and its service life extended.
- the properties of the coalescence medium can advantageously be integrated in the filter medium.
- both the filter function and the coalescing function can thus be made possible with a single medium.
- the Wasserabscheidevoriques can be arranged interchangeably in a housing.
- the separation device can optionally be removed from the housing with the filter medium, in particular for maintenance purposes, in particular in the event of contamination.
- the water separation device may optionally be arranged with the filter medium fixed in the housing. In this case, in particular for maintenance purposes, the complete housing with the Wasserabscheidevoroplasty optionally be replaced with the filter medium.
- the filter element according to the invention which is designed as a hollow body Koaleszenzmedium for coalescence of water droplets from the fuel and in the flow direction of the fuel behind the coalescence in the interior or this surrounding a designed as a hollow body hydrophobic, permeable to the fuel Separating medium for the separation of water droplets contained in the fuel, wherein a designed as a hollow body filter medium for filtering the fuel in the flow direction of the liquid hydrocarbon in front of the separation medium, this surrounding or in the interior, is arranged and between the coalescer and the separation medium a precipitation gap is realized , All shown in connection with the deposition device according to the invention and its advantageous embodiments advantages and features apply to the filter element according to the invention and its advantageous embodiments accordingly.
- the technical object is also achieved by the fuel filter according to the invention, in which a filter element according to the invention with a Wasserabscheide noticed is arranged in the housing so that it separates the fuel inlet close to the fuel outlet. All in connection with the separation device according to the invention and the filter element according to the invention and their advantageous embodiments demonstrated advantages and features apply to the fuel filter according to the invention and its advantageous embodiments accordingly.
- Figure 1 is an isometric view of an open at its top filter element of a fuel filter of an internal combustion engine having a Wasserabscheidevoriques having a separation unit with a star-shaped profile;
- Figure 2 is a plan view of the filter element of Figure 1 axially to a longitudinal center axis of the filter element;
- FIG. 3 shows a longitudinal section of the filter element from FIGS. 1 and 2 along a section line III-III from FIG. 2 in a filter housing of the fuel filter;
- Figure 4 is a detail section of the separation unit of the filter element of Figures 1 to 3;
- Figure 5 is a detail view of a downstream side of the separation unit of Figures 1 to 4;
- FIG 6 is an isometric view of the filter element of Figures 1 to 3, wherein here a radially outer filter element is shown transparent and indicated by dashed lines;
- Figure 7 shows a second embodiment of a circular cylindrical separation unit, which can be used in conjunction with the filter element of Figures 1 to 3.
- the same components are provided with the same reference numerals.
- FIGS. 1 to 6 show a filter element 10 of a fuel filter 12, shown in section in FIG. 3, for diesel fuel of an internal combustion engine of a motor vehicle in different perspectives.
- the filter element 10 and the fuel filter 12 are shown in Figures 1 to 6 only schematically and not to scale. Some elements have only been schematically indicated or omitted for the sake of clarity.
- the filter element 10 is arranged in a housing 14 of the fuel filter 12.
- the housing 14 is indicated by dashed lines.
- the housing 14 has a fuel inlet 16 for the diesel fuel.
- a fuel outlet 18, which in the present exemplary embodiment is arranged, for example, on the filter element 10, leads out of this through a peripheral wall of the filter housing 14.
- the water outlet 20 is arranged on the filter element 10 by way of example in the present exemplary embodiment.
- the filter element 10 is disposed in the housing 14 so as to tightly separate the fuel inlet 16 from the fuel outlet 18.
- the fuel inlet 16 is connected outside the housing 14 with a fuel supply line, not shown in the figures. Inside the housing 14, the fuel inlet 16 opens into an inlet chamber 22, which surrounds the filter element 10 in a ring-shaped radially outside.
- the feed space 22 extends in the axial direction in the interior of the housing 14.
- "Axial”, “radial”, “coaxial” and “circumferential” refer in the following, unless stated otherwise, to a filter axis 24, which is shown in FIGS. 3 and 6 is indicated by dash-dotted lines.
- the fuel outlet 18 is connected to a drainage chamber 26, which is located in the normal installation position of the fuel filter 12 at the bottom of the filter element 10. Outside the housing 14, the fuel outlet 18 is connected to a fuel discharge, not shown in the figures, for the purified diesel fuel.
- the water outlet 20 is connected to a water collection chamber 28, which is located in the normal installation position of the fuel filter 12 at the bottom of the filter element 10. Outside the housing 14, the water outlet 20 is connected to a water drainage line, not shown, via which the separated water can be discharged from the housing 14.
- the filter element 10 comprises a star-shaped folded, circumferentially closed filter medium 30, with the particular particles can be filtered out of the diesel fuel to be cleaned.
- the filter medium 30 has an imaginary radially outer envelope and an imaginary radially inner envelope each in the form of a coaxial circular cylinder.
- the filter medium 30 is sealed to a lower end plate 32.
- the filter medium 30 is tightly connected to an upper end plate 34, which is shown in FIG.
- the upper end plate 34 is closed throughout.
- the lower end disk 32 has a coaxial opening 36, which connects a filter interior 38 within the filter medium 30 with the water collection chamber 28.
- the coalescing medium 40 is circular cylindrical and circumferentially closed. It extends coaxially to the filter medium 30 between the upper Anschlußendlude 34 and the lower Anschlußendcase 32.
- the coalescing medium 40 serves the merging of even the smallest water droplets in the diesel fuel to larger water droplets.
- the coalescing medium 40 may be a nonwoven, for example.
- the coalescing medium 40 is part of a generally designated 42 Wasserabscheidevoriques for the separation of water contained in the diesel fuel.
- the Wasserabscheidevoriques 42 further includes a designed as an approximately tubular hollow body separation unit 44.
- a detail section of a peripheral wall of the separation unit 44 is shown in FIG.
- FIG. 5 is a plan view of a radially inner downstream side of the separation unit 44 is shown.
- the separation unit 44 has a support grid 46 radially inward and a separation medium 48 radially outward.
- the support grid 46 is located on the outflow side of the separation medium 48.
- An interior 50 of the separation unit 44 is connected to the discharge space 26 at the bottom at the end face of the separation unit 44 in the normal installation position of the fuel filter 12.
- the support grid 46 is made of a diesel fuel resistant material. It is preferably made of polyacrylic or polyethylene.
- the support grid 46 is constructed like a mesh. It may preferably have a mesh size of about 100 ⁇ to 15 mm. The mesh size is indicated in FIG. 5 by a double arrow 56.
- the separation medium 48 is made of a hydrophobic material. It is realized as a membrane made of expanded polytetrafluoroethylene (ePTFE). The membrane is circumferentially closed. The separation medium 48 serves as a water barrier, which only lets through the diesel fuel.
- the ePTFE can be a monodirectional ePTFE in which the molecular fibers are oriented in one direction. Alternatively, it can also be multidirectional ePTFE in which the molecular fibers are oriented in different directions. With multidirectional ePTFE, higher strength and creep resistance in the longitudinal and transverse directions of the membrane can be achieved than with monodirectional ePTFE.
- the separation medium 48 has a pore size of approximately between 10 ⁇ and 30 ⁇ .
- the mesh size 56 of the support grid 46 is significantly larger than the pore size of the separation medium 48. In this way, an influence of the support grid 46 on the fuel flow through the separation unit 44 is reduced.
- the separation medium 48 surrounds circumferentially the support grid 46 and lies with its radially inner side on the support grid 46.
- the membrane of the separation medium 48 is arranged on the later upstream side of the first flat support grid 44.
- the support grid 46 is folded star-shaped together with the separation medium 48 and circumferentially closed. In this way, the alone in its form labile separation medium 48 can be folded simply star-shaped.
- the support grid 46 with the coalescing medium 40 is attached to a separation unit support tube 49.
- the separation unit support tube 49 has a plurality of profile-shaped circumferential circumferential support portions 52.
- the circumferential support sections 52 are connected to one another via a plurality of axial support sections 54.
- Axialstützabête 54 extend axially to the filter axis 24th
- the separation unit 44 is sealed tightly with an upper closed dividing end disk 58. There, the Trennticiansstützrohr 49, the support grid 46 and the separation medium 48 are connected to the upper Tiredulation 58. On the opposite end face of the separation unit 44, the separation unit support tube 49, the support grid 46 and the separation medium 48 are connected to a lower separating end disk 60.
- the lower separating end disk 60 has an opening 62 coaxial with the filter axis 24, which connects the interior 50 of the separating unit 44 to the discharge space 26.
- the separation unit 44 extends in the axial direction over the entire filter interior 38.
- the precipitation gap 64 has the shape of an annular space.
- the precipitation gap 64 is bounded radially inwardly by the separation medium 48 and radially outward by the coalescing medium 40.
- the precipitation gap 64 is closed by the upper end disk 34.
- the precipitation gap 64 is connected to the water collecting space 28 via the opening 36.
- the diesel fuel to be cleaned which may contain particles and water, as indicated in FIG. 3 by a dot-dashed arrow 66, is supplied from the fuel feed line through the fuel inlet 16 to the inlet space 22. From there, the diesel fuel, indicated by arrows 68, passes through the filter medium 30 from radially outside to radially inward to the coalescing medium 40. The diesel fuel is freed of particles.
- the filter medium 30 forms a first stage of the overall three-stage fuel filter 12 for the cleaning / water separation. On the clean side of the filter medium 30, the diesel fuel freed of particles flows through the coalescing medium 40 from radially outside to radially inside. In the process, even the smallest water droplets contained in the diesel fuel are captured and combined to form larger drops of water.
- the coalescing medium 40 forms a second stage for the purification / water separation.
- the diesel fuel and the water which is mostly in the form of large drops of water, reach the precipitation gap 64.
- the diesel fuel flows through the separation medium 48, which forms a third stage for the cleaning / water separation, from radially outside to radially inside, indicated by dashed arrows 70.
- the star-shaped arrangement of the separation medium 48 a corresponding increase in the fürström design is achieved. Due to the larger flow area compared to a circular-cylindrical separation medium, a pressure difference between the inflow side and the outflow side of the separation medium 48 is reduced.
- the cleaned and freed of water diesel fuel passes, indicated by arrows 72, from the interior 50 of the separation unit 44 down into the drain chamber 26 and from there through the fuel outlet 18 in the fuel discharge.
- the housing 14 may be designed for maintenance purposes so that it can be opened. In this way, the filter element 10 can be removed from the housing 14, for example for replacement or for cleaning. However, the fuel filter 12 may also be designed so that the filter element fixed in the housing 14th is arranged. In this case, for maintenance purposes, the entire fuel filter 12 can be replaced.
- FIG. 7 shows a second exemplary embodiment of a separation unit 144.
- Those elements that are similar to those of the first embodiment of Figures 1 to 6 are provided with the same reference numerals plus 100.
- the second embodiment differs from the first embodiment in that the separation unit 144 and the separation unit support tube 149 do not have a star-shaped but round profile.
- the separation unit 144 can be used analogously to the first embodiment in the filter element 10 of the fuel filter 12 of Figures 1 to 6.
- the invention is not limited to filter elements 10 for diesel fuel. Rather, it can also be used for the purification and / or water separation in other liquid hydrocarbons, such as fuels or oils. If a hydrocarbon is used whose specific gravity is greater than water, the drops of water increase analogously. In this case, the filter element 10 may be reversed. Likewise, the fuel inlet 16, the fuel outlet 18 and the water outlet 20 can be arranged accordingly.
- the invention can also be used in other types of internal combustion engines, such as industrial engines.
- the water separation device 42 can also be arranged as a separate component, in particular in a separate housing.
- the fuel outlet 18 and / or the water outlet 20 may also be fixedly connected to the housing 14 instead of being arranged on the filter element 10.
- the arrangement of the filter element 10 in the housing 14 can also be done in other ways.
- a housing-fixed central tube can be provided, on which the filter element 10 can be inserted axially to the filter axis 24.
- the filter medium 30 can be surrounded radially on the outside by a fluid-permeable, coaxial filter support tube which can connect the upper end disk 34 stably to the lower end disk 32.
- the filter support tube can also be arranged radially inward. Coalescing medium 40 may then abut the radially outer peripheral side of the filter support tube.
- the coalescing medium 40 can be realized instead of as a nonwoven in another way, for example as a woven or knitted fabric.
- the coalescing medium 40 can also be combined with the filter medium 30, for example in the form of a coating.
- the filter medium 30 may also be provided with a coalescing property.
- the separation medium 48 can be shaped instead of a star shape and shaped as another type of hollow body so that it has an alternating course circumferentially.
- a circumferentially wavy course can be provided.
- an imaginary circular-cylindrical envelope it can also have an imaginary envelope with another base, for example an oval or angled base.
- the separation medium 48 may also be conical in the axial direction.
- the separation medium 148 can be realized instead of circular cylindrical as another type of hollow body, for example as a hollow cone.
- the hollow body may instead of a round base also have a different, for example, oval or angular base.
- the support grid 46; 146 may be made of a different, fuel-resistant material, in particular a plastic instead of polyacrylic or polyethylene.
- the filter medium 30 can also be realized as a different kind of hollow body, for example as a hollow cylinder or hollow cone, for example with a round, oval or angular base area.
- the separation unit support pipe 49; 149 instead of a profile that the separation medium 48; 148 with the support grid 46; 146 also has a different profile.
- the separation unit support tube 49; 149 have a round, oval or angular profile.
- radially inner fold edges of the separation medium 48 and the support grid 46 may abut against the radially outer peripheral side of a circular cylindrical separation unit support tube.
- the coalescing medium 40 can be realized instead of as a nonwoven in another way, for example as a sieve, tissue or granules.
- the filter medium 30 may be replaced by the coalescing medium 40 and the separation unit 44; 144 to be surrounded radially outside, also in the interior of the separation unit 44; 144 may be arranged.
- the diesel fuel to be cleaned then flows through the filter medium 30, the coalescing medium 40 and the separation medium 48; 148 from radially outside to inside.
- the filter medium 30, the coalescing medium 40 and / or the separation medium 48; 148 may instead of axially to the filter axis 24 in other ways, for example, eccentrically to the filter axis 24 may be arranged.
Abstract
Description
Claims
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201311003472 DE112013003472A5 (de) | 2012-07-12 | 2013-06-05 | Wasserabscheidevorrichtung, Filterelement eines Kraftstofffilters und Kraftstofffilter |
US14/594,490 US10220352B2 (en) | 2012-07-12 | 2015-01-12 | Water separating device, filter element of a fuel filter and a fuel filter |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE201210013743 DE102012013743A1 (de) | 2012-07-12 | 2012-07-12 | Wasserabscheidevorrichtung, Filterelement eines Kraftstoff-Filters und Kraftstofffilter |
DE102012013743.5 | 2012-07-12 |
Related Child Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US14/594,490 Continuation US10220352B2 (en) | 2012-07-12 | 2015-01-12 | Water separating device, filter element of a fuel filter and a fuel filter |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2014009060A1 true WO2014009060A1 (de) | 2014-01-16 |
Family
ID=48607240
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2013/061549 WO2014009060A1 (de) | 2012-07-12 | 2013-06-05 | Wasserabscheidevorrichtung, filterelement eines kraftstofffilters und kraftstofffilter |
Country Status (3)
Country | Link |
---|---|
US (1) | US10220352B2 (de) |
DE (2) | DE102012013743A1 (de) |
WO (1) | WO2014009060A1 (de) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2015140626A1 (en) | 2014-03-20 | 2015-09-24 | Ufi Filters S.P.A. | A filter structure for fuel, a cartridge and a filter group |
Families Citing this family (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2016135097A1 (de) * | 2015-02-27 | 2016-09-01 | Mann+Hummel Gmbh | Abscheidevorrichtung zur abscheidung wenigstens eines störfluids aus einer flüssigkeit, membran einer abscheidevorrichtung, filter, filterelement und flüssigkeitssystem |
DE112016002713T5 (de) | 2015-08-17 | 2018-03-01 | Cummins Filtration Ip, Inc. | Autoablasssystem für vakuum- und druckseitigen Kraftstoff-Wasserabscheider |
WO2019079094A2 (en) | 2017-10-20 | 2019-04-25 | Cummins Filtration Ip, Inc. | AUTOMATIC GALESCENCE FILTER FILTER DRAIN / LIQUID |
CN112154019B (zh) | 2018-03-09 | 2022-07-01 | 唐纳森公司 | 带有聚结器的燃料过滤器 |
DE102018205069A1 (de) * | 2018-04-04 | 2019-10-10 | Mahle International Gmbh | Filtereinrichtung |
GB2590066A (en) * | 2019-11-13 | 2021-06-23 | Indufil BV | Apparatus and method |
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EP0336398A2 (de) * | 1988-04-06 | 1989-10-11 | Manfred Lorey | Separatorelement |
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DE202006019301U1 (de) * | 2006-12-23 | 2008-04-30 | Mann+Hummel Gmbh | Kraftstofffilter |
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DE102010023650A1 (de) * | 2010-06-14 | 2011-12-15 | Mann + Hummel Gmbh | Filtereinrichtung, insbesondere Flüssigkeitsfilter |
DE102010052329A1 (de) * | 2010-11-25 | 2012-05-31 | Mann + Hummel Gmbh | Kraftstofffilter |
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US2864505A (en) * | 1956-09-07 | 1958-12-16 | Bendix Aviat Corp | Vertical two stage demulsifier filter assembly |
SE392582B (sv) * | 1970-05-21 | 1977-04-04 | Gore & Ass | Forfarande vid framstellning av ett porost material, genom expandering och streckning av en tetrafluoretenpolymer framstelld i ett pastabildande strengsprutningsforfarande |
IT8167809A0 (it) * | 1980-06-23 | 1981-06-11 | Chicago Rawhide Mfg Co | Dispositivo per la rimozione di sostanze contaminanti da un fluido |
US4588500A (en) * | 1984-09-04 | 1986-05-13 | Kaydon Corporation | Fuel filter and dehydrator |
-
2012
- 2012-07-12 DE DE201210013743 patent/DE102012013743A1/de not_active Withdrawn
-
2013
- 2013-06-05 DE DE201311003472 patent/DE112013003472A5/de not_active Withdrawn
- 2013-06-05 WO PCT/EP2013/061549 patent/WO2014009060A1/de active Application Filing
-
2015
- 2015-01-12 US US14/594,490 patent/US10220352B2/en not_active Expired - Fee Related
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CA963400A (en) * | 1971-09-29 | 1975-02-25 | Vladimir Rizek | Combination filter and water separator |
US4253954A (en) * | 1979-07-02 | 1981-03-03 | Nelson Industries, Inc. | Two-stage spin-on separating device |
EP0336398A2 (de) * | 1988-04-06 | 1989-10-11 | Manfred Lorey | Separatorelement |
EP1256707A2 (de) * | 2001-05-12 | 2002-11-13 | MAHLE Filtersysteme GmbH | Kraftstofffilter mit wasserabscheidenden Mitteln |
US20080105629A1 (en) | 2006-11-08 | 2008-05-08 | Donaldson Company, Inc. | Systems, articles, and methods for removing water from hydrocarbon fluids |
DE202006019301U1 (de) * | 2006-12-23 | 2008-04-30 | Mann+Hummel Gmbh | Kraftstofffilter |
DE102010023650A1 (de) * | 2010-06-14 | 2011-12-15 | Mann + Hummel Gmbh | Filtereinrichtung, insbesondere Flüssigkeitsfilter |
DE102010052329A1 (de) * | 2010-11-25 | 2012-05-31 | Mann + Hummel Gmbh | Kraftstofffilter |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
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WO2015140626A1 (en) | 2014-03-20 | 2015-09-24 | Ufi Filters S.P.A. | A filter structure for fuel, a cartridge and a filter group |
CN106413834A (zh) * | 2014-03-20 | 2017-02-15 | Ufi过滤股份公司 | 用于燃料的过滤结构、筒及过滤组件 |
CN106413834B (zh) * | 2014-03-20 | 2018-11-30 | Ufi过滤股份公司 | 用于燃料的过滤结构、筒及过滤组件 |
Also Published As
Publication number | Publication date |
---|---|
US10220352B2 (en) | 2019-03-05 |
DE112013003472A5 (de) | 2015-03-19 |
US20150122720A1 (en) | 2015-05-07 |
DE102012013743A1 (de) | 2014-01-16 |
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