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WO2019072547A1 - Filtre à fluide - Google Patents

Filtre à fluide Download PDF

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Publication number
WO2019072547A1
WO2019072547A1 PCT/EP2018/075969 EP2018075969W WO2019072547A1 WO 2019072547 A1 WO2019072547 A1 WO 2019072547A1 EP 2018075969 W EP2018075969 W EP 2018075969W WO 2019072547 A1 WO2019072547 A1 WO 2019072547A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
fluid
particle filter
particle
hydrophobic
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/EP2018/075969
Other languages
German (de)
English (en)
Inventor
Andreas Kollmann
Peter Koppi
David Springer
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.)
Mahle International GmbH
Original Assignee
Mahle International GmbH
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 Mahle International GmbH filed Critical Mahle International GmbH
Publication of WO2019072547A1 publication Critical patent/WO2019072547A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/11—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor with bag, cage, hose, tube, sleeve or like filtering elements
    • B01D29/13—Supported filter elements
    • B01D29/15—Supported filter elements arranged for inward flow filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D29/00—Filters with filtering elements stationary during filtration, e.g. pressure or suction filters, not covered by groups B01D24/00 - B01D27/00; Filtering elements therefor
    • B01D29/50—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
    • B01D29/52—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 parallel connection
    • B01D29/54—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 parallel 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M37/00—Apparatus or systems for feeding liquid fuel from storage containers to carburettors or fuel-injection apparatus; Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines
    • F02M37/22—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system
    • F02M37/32—Arrangements for purifying liquid fuel specially adapted for, or arranged on, internal-combustion engines, e.g. arrangements in the feeding system characterised by filters or filter arrangements
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps
    • B01D2201/295—End caps with projections extending in a radial outward direction, e.g. for use as a guide, spacing means
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D27/00—Cartridge filters of the throw-away type
    • B01D27/14—Cartridge filters of the throw-away type having more than one filtering element
    • B01D27/142—Cartridge filters of the throw-away type having more than one filtering element connected in parallel
    • B01D27/144—Cartridge filters of the throw-away type having more than one filtering element connected in parallel arranged concentrically or coaxially

Definitions

  • the invention relates to a fluid filter, in particular a diesel fuel filter for a motor vehicle, according to the preamble of claim 1.
  • Fluid filters - such as diesel fuel filters - are used in a motor vehicle to rid the fuel of dirt particles and thereby protect the engine.
  • the fuel is guided from a fluid inlet to a fluid outlet through a particle filter, which usually consists of a fine-meshed material.
  • a particle filter which usually consists of a fine-meshed material.
  • the fuel can pass through the material unhindered and is thus cleaned.
  • a so-called raw side is defined by the fluid inlet
  • a so-called clean side of the particle filter is defined by the fluid outlet.
  • a plurality of particulate filters may be provided in the fluid filter.
  • a coarse-meshed material is used for one of the particulate filter, so that even with a dirty fine-meshed particulate filter or at a low pressure, the fuel can flow through the fluid filter.
  • Such fluid filters are known, for example, from WO 201 1/101750 A1; US 2008/0308474 A1 and DE 1 977 428 U known. Separating disks can be inserted between the individual particle filters so that no uncleaned fuel can flow between the particle filters. The cutting discs may have a surface pattern to better prevent flow of the unpurified fuel between the particulate filters.
  • a fluid filter is described for example in DE 616696 C.
  • the fuel to be cleaned can contain not only dirt particles but also water droplets, which also have to be filtered out of the fuel.
  • a density difference of the water droplets and the fuel is used in the conventional fluid filters. Since the density of the water droplets is higher than the density of the fuel, the water droplets settle under the action of the dead weight in the fuel and are collected in a water collecting chamber of the fluid filter. During maintenance of the fluid filter, the water from the water collection chamber is disposed of automatically or manually. However, if the fuel flows at high pressure through the particulate filter, the water droplets can be entrained and enter the internal combustion engine. This is to be avoided in principle.
  • the object of the invention is therefore to provide an improved or at least alternative embodiment for a fluid filter of the generic type, in which the described disadvantages are overcome.
  • the present invention is based on the general idea, in a fluid filter, in particular in a diesel fuel filter for a motor vehicle, to separate the fluid to be filtered and the admixed water even before filtering.
  • the fluid filter has a hollow-cylindrical filter housing with a fluid inlet and with a fluid outlet.
  • a first directly permeable particle filter and a second directly permeable particle filter are arranged side by side and coaxially in the filter housing, wherein a raw side of the particulate filter with the fluid inlet and a clean side of the particulate filter fluidly connected to the fluid outlet.
  • the two particle filters can be flowed through in parallel by the fluid to be filtered.
  • the first te particle filter on the raw side hydrophobic and the second particle filter on the raw side hydrophilic.
  • a hydrophobic surface and a hydrophilic surface are defined by a contact angle of a water droplet on this surface.
  • the contact angle of the water droplet on the hydrophobic surface is higher than 80 °.
  • the contact angle of the water drop is between 0 ° and 80 °.
  • the admixed water can not wet the first hydrophobic particle filter on the raw side and also can not penetrate the first particle filter.
  • the admixed water wets the second hydrophilic particle filter on the raw side and can accordingly penetrate the second particle filter.
  • the fluid to be cleaned flows unfiltered into the fluid filter and can flow unhindered through the first hydrophobic particle filter.
  • the water mixed with the fluid is held unfiltered by the first hydrophobic particle filter and settles.
  • the hydrophobic particle filter may consist of a fine-meshed material, so that the dirt particles mixed with the fluid adhere to the particle filter.
  • the fluid to be filtered thus passes through the particle filter to the clean side and is freed from the admixed water and from the admixed dirt particles.
  • the first particulate filter is disposed at the fluid outlet so that the filtered fluid can flow out of the fluid filter.
  • the untreated water flows through the second hydrophilic particle filter to the clean side, whereby also on the clean side the filtered fluid and the filtered water remain separated due to the difference in density.
  • the fluid to be filtered is freed in the fluid filter according to the invention already on the raw side of the admixed water and clean side remain the filtered fluid and the filtered water separated. In this way, the fluid to be filtered safely from freed the added water and the engine of the motor vehicle to be protected.
  • the first particle filter on the raw side has a hydrophobic coating or consists of a hydrophobic material or has such a hydrophobic material.
  • the second particle filter on the raw side has a hydrophilic coating or consists of a hydrophilic material or has such.
  • the first particle filter and the second particle filter can be separated axially and at least partially from one another by a separating disk.
  • the first particle filter and the second particle filter can be separated from one another in a fluid-tight manner via the separating disk and can also be connected to one another in a fluid-conducting manner. If the particle filters are connected to one another in a fluid-conducting manner on the clean side, a separation of the water from the fluid can also take place on the clean side. If the particle filters on the clean side fluid-tightly separated, so a pure water area is formed exclusively with the filtered water. The clean water area is separated from the filtered fluid by the separation disk, and the filtered water can be disposed of from the clean water area without additional costly filtering.
  • the second particulate filter may be a coalescer or may consist of a coalescing material.
  • the admixed water is present in the fluid to be filtered in the form of a plurality of water droplets dissolved in the fluid.
  • a second particle filter designed in this way allows the water drops dissolved in the fluid to flow together, so that larger and correspondingly heavier water droplets are present on the clean side than on the raw side. In this way, an increase of the water drops even at a high Prevents pressure in the fluid filter and the filtered water and the filtered fluid remain segregated from each other on the clean side.
  • the first particle filter and the second particle filter form a one-piece filter body with a first hydrophobic particle filter region and with a second hydrophilic particle filter region.
  • the filter body may be made of a material that has neither pronounced hydrophilic properties nor pronounced hydrophobic properties.
  • the hydrophobic first particulate filter region and the second hydrophilic particulate filter region may be defined by a raw hydrophobic surface and a raw hydrophilic surface.
  • the first particle filter region has a hydrophobic coating on the raw side.
  • the second particle filter region may have a hydrophilic coating on the raw side.
  • the admixed water is rejected in this way unfiltered by the respective coating of the respective particle filter area or transmitted.
  • the production cost and the manufacturing cost can be reduced.
  • the fluid outlet is separated on the clean side from the particle filters via an end separator.
  • the end separator is a hydrophobic Endabscheidersieb through which the admixed water droplets are retained by the fluid outlet. The Endabscheider can thereby at least over a length of the first particulate filter coaxially therewith to allow sufficient passage of the fluid to the fluid outlet.
  • the fluid filter can have a water-collecting chamber.
  • the water collecting chamber is at least partially axially separated from the first particle filter by the second particle filter.
  • the water collecting chamber In an operating state of the fluid filter, the water collecting chamber is located under the second hydrophilic particle filter, so that the filtered water settles under gravity into the water collecting chamber.
  • the first hydrophobic particle filter Above the second hydrophilic particle filter is in the operating state of the fluid filter, the first hydrophobic particle filter, so that the fluid is on the clean side and raw side above the water.
  • the fluid outlet is arranged on the clean side in such a way that the filtered fluid can flow out of the fluid filter without mixing with the filtered water.
  • the fluid to be filtered is already freed on the raw side from the admixed water and also on the clean side, the filtered fluid and the filtered water remain separated. In this way, the fluid to be filtered can be safely freed from the admixed water and the engine of the motor vehicle to be protected.
  • the sole FIGURE 1 shows a fluid filter 1 according to the invention.
  • the fluid filter 1 has a hollow-cylindrical filter housing 2 with a fluid inlet 3 and with a fluid outlet 4.
  • a first particle filter 5 and a second particle filter 6 are axially offset with respect to a cylinder axis of the fluid filter 1 and arranged coaxially in the filter housing 2, wherein a raw side 3a of the particulate filter 5 and 6 with the fluid inlet 3 and a clean side 4a of the particulate filter 5 and 6 are fluidly connected to the fluid outlet 4. Consequently, the fluid inlet 3a is fluid-conductively connected to the fluid outlet 4a via the particulate filters 5 and 6.
  • the first particle filter 5 is hydrophobic on the raw side 3a and the second particle filter 6 is hydrophilic on the raw side 3a.
  • the first particle filter 5 on the raw side may have a hydrophobic coating or consist of a hydrophobic material.
  • the second particle filter 6 can have a hydrophilic coating on the raw side or consist of a hydrophilic material.
  • the fluid to be purified flows into the filter housing 2 on the raw side 3a and passes unhindered through the first hydrophobic particle filter 5.
  • the hydrophobic particle filter 5 consists of a fine-meshed material, so that the dirt particles mixed with the fluid adhere to the particle filter 5.
  • the fluid to be filtered is therefore freed on the clean side 4a of the admixed water and the admixed dirt particles.
  • the water deposited on the raw side 3a flows through the second hydrophilic particle filter 6 to the clean side 4a and also becomes freed from the added dirt particles.
  • the second particle filter 6 may, for example, be a coalescence separator or consist of a coalescing material in order to increase the water droplets by the coalescence and thus better to separate on the clean side 4a from the filtered fluid. On the clean side 4a, the filtered fluid and the filtered water remain separated due to the difference in density.
  • the fluid filter 1 In order to be able to deposit the admixed water on the clean side 4a, the fluid filter 1 has an end separator 7.
  • the end separator 7 separates the fluid outlet 4 from the particulate filters 5 and 6 and the admixed water remains in the filter housing 2.
  • the filter housing 2 has a water collecting chamber 8, in which the water is collected on the clean side 4a. Through a water drainage channel 9, the collected water from the filter housing 2 can be removed manually or automatically as needed.
  • the clean side 4a is fluid-tightly separated from the raw side 3a, so that no unfiltered fluid and no unfiltered water can reach the clean side 4a.
  • the fluid filter 1 has a first sealing ring 10a and a second sealing ring 10b.
  • the first particle filter 5 and the second particle filter 6 are axially separated from one another by a separating disk 1 1.
  • the fluid to be filtered is already freed from the admixed water on the raw side 3a.
  • the filtered fluid and the filtered water remain separated on the clean side 4a due to the density difference.
  • the fluid to be filtered can be safely freed from the admixed water and the internal combustion engine of the motor vehicle can be better protected.

Landscapes

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

Abstract

L'invention concerne un filtre à fluide (1), en particulier pour un filtre à carburant diesel d'un véhicule à moteur. Le filtre à fluide (1) comporte un boîtier de filtre (2) cylindrique creux pourvu d'une entrée de fluide (3) et d'une sortie de fluide (4). Un premier filtre à particules (5) et un deuxième filtre à particules (6) sont disposés l'un à côté de l'autre et coaxialement dans le boîtier de filtre (2), un côté brut (3a) des filtres à particules (5, 6) étant en communication fluidique avec l'entrée de fluide (3) et un côté propre (4a) des filtres à particules (5, 6) étant en communication fluidique avec la sortie de fluide (4). Selon l'invention, le premier filtre à particules (5) est hydrophobe du côté brut et le deuxième filtre à particules (6) est hydrophile du côté brut.
PCT/EP2018/075969 2017-10-09 2018-09-25 Filtre à fluide Ceased WO2019072547A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102017217911.2 2017-10-09
DE102017217911.2A DE102017217911A1 (de) 2017-10-09 2017-10-09 Fluidfilter

Publications (1)

Publication Number Publication Date
WO2019072547A1 true WO2019072547A1 (fr) 2019-04-18

Family

ID=63720663

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2018/075969 Ceased WO2019072547A1 (fr) 2017-10-09 2018-09-25 Filtre à fluide

Country Status (2)

Country Link
DE (1) DE102017217911A1 (fr)
WO (1) WO2019072547A1 (fr)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102020106489A1 (de) 2020-03-10 2021-09-16 Mann+Hummel Gmbh Flüssigkeitsfilterelement

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE616696C (de) 1934-03-02 1935-08-02 Robert Bosch Akt Ges Fluessigkeitsfilter, insbesondere Brennstoffilter, fuer Brennkraftmaschinen
DE1977428U (de) 1963-07-26 1968-01-25 Winslow Engineering And Mfg Co Filteraggregat.
WO2004082804A1 (fr) * 2003-03-21 2004-09-30 Mann+Hummel Gmbh Systeme de filtre a carburant
US20080308474A1 (en) 2005-04-06 2008-12-18 Ufi Filters S.P.A. Diesel Fuel Filter
WO2011101750A1 (fr) 2010-05-25 2011-08-25 Ufi Innovation Center S.R.L. Groupe filtrant amélioré pour moteurs à combustion interne
US8470175B2 (en) * 2009-09-15 2013-06-25 Purolator Filters Na Llc Space reducing filter with supplemental fluid processing element
US20140284264A1 (en) * 2011-12-09 2014-09-25 Mann+Hummel Gmbh Fuel Filter of an Internal Combustion Engine, and Filter Element of a Fuel Filter
DE102013016976A1 (de) * 2013-10-14 2015-04-16 Mann + Hummel Gmbh Filterelement und Filtersystem für ein Flüssigmedium, insbesondere Dieselkraftstoff

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3465883A (en) * 1967-07-25 1969-09-09 Wix Corp Fuel-water separator and filter
DE102005005848A1 (de) * 2005-02-08 2006-08-10 Mann + Hummel Gmbh Filtersystem für Kraftstoff
US9789426B2 (en) * 2015-01-26 2017-10-17 Caterpillar Inc. Flow cap and filter assembly including flow cap

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE616696C (de) 1934-03-02 1935-08-02 Robert Bosch Akt Ges Fluessigkeitsfilter, insbesondere Brennstoffilter, fuer Brennkraftmaschinen
DE1977428U (de) 1963-07-26 1968-01-25 Winslow Engineering And Mfg Co Filteraggregat.
WO2004082804A1 (fr) * 2003-03-21 2004-09-30 Mann+Hummel Gmbh Systeme de filtre a carburant
US20080308474A1 (en) 2005-04-06 2008-12-18 Ufi Filters S.P.A. Diesel Fuel Filter
US8470175B2 (en) * 2009-09-15 2013-06-25 Purolator Filters Na Llc Space reducing filter with supplemental fluid processing element
WO2011101750A1 (fr) 2010-05-25 2011-08-25 Ufi Innovation Center S.R.L. Groupe filtrant amélioré pour moteurs à combustion interne
US20140284264A1 (en) * 2011-12-09 2014-09-25 Mann+Hummel Gmbh Fuel Filter of an Internal Combustion Engine, and Filter Element of a Fuel Filter
DE102013016976A1 (de) * 2013-10-14 2015-04-16 Mann + Hummel Gmbh Filterelement und Filtersystem für ein Flüssigmedium, insbesondere Dieselkraftstoff

Also Published As

Publication number Publication date
DE102017217911A1 (de) 2019-04-11

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