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WO2008037561A1 - Fuel filter - Google Patents

Fuel filter Download PDF

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Publication number
WO2008037561A1
WO2008037561A1 PCT/EP2007/059164 EP2007059164W WO2008037561A1 WO 2008037561 A1 WO2008037561 A1 WO 2008037561A1 EP 2007059164 W EP2007059164 W EP 2007059164W WO 2008037561 A1 WO2008037561 A1 WO 2008037561A1
Authority
WO
WIPO (PCT)
Prior art keywords
chamber
fuel
container
group
filter
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/EP2007/059164
Other languages
French (fr)
Inventor
Giorgio Girondi
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.)
UFI Filters SpA
Original Assignee
UFI Filters SpA
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 UFI Filters SpA filed Critical UFI Filters SpA
Publication of WO2008037561A1 publication Critical patent/WO2008037561A1/en
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • 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
    • B01D17/00—Separation of liquids, not provided for elsewhere, e.g. by thermal diffusion
    • B01D17/02—Separation of non-miscible liquids
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0211—Separation of non-miscible liquids by sedimentation with baffles
    • 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
    • B01D17/0208—Separation of non-miscible liquids by sedimentation
    • B01D17/0214—Separation of non-miscible liquids by sedimentation with removal of one of the phases
    • 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
    • F02M37/24—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
    • 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
    • C10G2400/00—Products obtained by processes covered by groups C10G9/00 - C10G69/14
    • C10G2400/04—Diesel oil

Definitions

  • the invention relates in general to a filter group for fuel which is destined to be associated to internal combustion engines of the diesel type. It is known that diesel fuel contains particles of water which must be separated from the fuel before it is supplied to the engine. Background Art
  • filter groups have been developed, one of which is described in European patent no. EP 1229984, which comprise an external cylindrical container, provided with an inlet conduit and an outlet conduit for the fuel, the internal volume of which is separated by a water separating means into two chambers, lower and upper, which are inter-communicating.
  • a filter wall is housed in the upper chamber, while the lower chamber is destined to collect the water which separates from the fuel thanks to the action of the separating means, which generally consists in a perforated platelet which by coalescence causes the separation of the water from the fuel.
  • the water collected in the lower chamber is evacuated thanks to a special tap.
  • the main drawback is that the size of the lower chamber is necessarily limited by the size of the filter group, which in turn must be commensurate with the size of the engine compartment, an often cramped space. This means that the chamber has to evacuated very frequently of the water collected therein. Disclosure of Invention The aim of the present invention is to obviate the drawbacks in the prior art with a simple and rational solution which involves an especially contained outlay in terms of costs.
  • Figure 1 is a plan view of the filter group of the invention.
  • Figure 2 is section N-Il of figure 1. Best Mode for Carrying Out the Invention
  • the figures illustrate the filter group 1 , which comprises a container 2, external and tray-conformed, a mouth of which is closed by a cover 3.
  • the bottom 20 of the container 2 has a narrow and elongate shape and exhibits two sides 21 which are parallel to one another, the ends of which are joined by two curved portions 22.
  • a shaped element 4 is housed inside the container, which shaped element 4 comprises a horizontal plate 40, from which a first portion 41 rises vertically and is joined to the internal surface of the container 2, against which the first portion 41 rests, and a second portion 42, also known as a wall, which derives from an end of the first portion 41 and is arranged perpendicular thereto in order to define a vertical wall.
  • the wall divides the internal volume of the container 2 into a first and a second chamber 5 and 6 which communicate with one another thanks to a vertical slot 7 afforded in the portion 42 defining the wall.
  • the two chambers 5 and 6 flank one another and develop in the direction of the height of the container.
  • a fuel inlet conduit 8 enters the chamber 5, entering above the cover 3; while an outlet conduit 9 exits the chamber 6, emerging therefrom below the bottom 20 of the container 2.
  • a filter wall 10 is housed internally of the chamber 5, which filter wall 10 filters the fuel introduced into the fuel filter group through the inlet conduit 8.
  • the filter wall 10 is toroid, but it could, in other embodiments of the invention, be of a different shape, for example flat.
  • the shaped body 4 further comprises a horizontal upper plate 43 which is located below the cover 3 and has the function of preventing axial translations of the filter wall 10.
  • the fuel crossing the filter wall 10 passes into the second chamber 6, in which a separating means 11 is housed, which separating means 11 has the function of collecting the drops of water dispersed in the diesel fuel by coalescence, such as to separate the water from the diesel. Water has a higher specific gravity than diesel fuel, which causes the drops of water to tend to collect at the bottom of the chamber 6.
  • the separating means 1 1 comprises a panel 12 which is supported by the shaped element 4 and is provided with a plurality of openings 120 which are closed by a usual hydrophobic net 121.
  • a side of the hydrophobic net 121 rests on a step 410 afforded at the end of the portion 41 of the element 4, while the opposite side of the net 121 rests on a step 420 of the wall 42.
  • the filter group of the present invention advantageously provides a large water collection chamber which is able to collect a considerably greater quantity of water than known filter groups. In this way maintenance of the group can be less frequent, i.e. interventions to remove the water from the chamber are less frequently required.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Filtration Of Liquid (AREA)
  • Centrifugal Separators (AREA)

Abstract

A filter group comprises an external container (2) provided with an inlet conduit (8) and an outlet conduit (9) for fuel, an internal volume of the container being divided into a first (5) and a second (6) chamber, which are in reciprocal communication. The first chamber (5) is destined to house a filter wall (10) while the second chamber is destined to collect water which separates from the fuel via a means for separating (11) located internally of the container.

Description

FUEL FILTER
Technical Field
The invention relates in general to a filter group for fuel which is destined to be associated to internal combustion engines of the diesel type. It is known that diesel fuel contains particles of water which must be separated from the fuel before it is supplied to the engine. Background Art
To this end filter groups have been developed, one of which is described in European patent no. EP 1229984, which comprise an external cylindrical container, provided with an inlet conduit and an outlet conduit for the fuel, the internal volume of which is separated by a water separating means into two chambers, lower and upper, which are inter-communicating. A filter wall is housed in the upper chamber, while the lower chamber is destined to collect the water which separates from the fuel thanks to the action of the separating means, which generally consists in a perforated platelet which by coalescence causes the separation of the water from the fuel. The water collected in the lower chamber is evacuated thanks to a special tap.
The solution described in the above-mentioned patent carries out its functions well, but exhibits some drawbacks.
The main drawback is that the size of the lower chamber is necessarily limited by the size of the filter group, which in turn must be commensurate with the size of the engine compartment, an often cramped space. This means that the chamber has to evacuated very frequently of the water collected therein. Disclosure of Invention The aim of the present invention is to obviate the drawbacks in the prior art with a simple and rational solution which involves an especially contained outlay in terms of costs.
The invention attains the above-cited aim thanks to a filter group exhibiting the technical characteristics recited in independent claim 1. The dependent claims define details and advantageous embodiments of the invention.
Brief description of the Drawings
The characteristics and constructional advantages of the invention will emerge from the detailed description that follows, made with reference to the accompanying figures of the drawings, which illustrate, by way of non-limiting example, a particular and preferred embodiment of the invention. Figure 1 is a plan view of the filter group of the invention. Figure 2 is section N-Il of figure 1. Best Mode for Carrying Out the Invention
The figures illustrate the filter group 1 , which comprises a container 2, external and tray-conformed, a mouth of which is closed by a cover 3. The bottom 20 of the container 2 has a narrow and elongate shape and exhibits two sides 21 which are parallel to one another, the ends of which are joined by two curved portions 22.
A shaped element 4 is housed inside the container, which shaped element 4 comprises a horizontal plate 40, from which a first portion 41 rises vertically and is joined to the internal surface of the container 2, against which the first portion 41 rests, and a second portion 42, also known as a wall, which derives from an end of the first portion 41 and is arranged perpendicular thereto in order to define a vertical wall. The wall divides the internal volume of the container 2 into a first and a second chamber 5 and 6 which communicate with one another thanks to a vertical slot 7 afforded in the portion 42 defining the wall. As can be seen from the figures of the drawings, the two chambers 5 and 6 flank one another and develop in the direction of the height of the container.
A fuel inlet conduit 8 enters the chamber 5, entering above the cover 3; while an outlet conduit 9 exits the chamber 6, emerging therefrom below the bottom 20 of the container 2. A filter wall 10 is housed internally of the chamber 5, which filter wall 10 filters the fuel introduced into the fuel filter group through the inlet conduit 8. In the illustrated embodiment, the filter wall 10 is toroid, but it could, in other embodiments of the invention, be of a different shape, for example flat. The shaped body 4 further comprises a horizontal upper plate 43 which is located below the cover 3 and has the function of preventing axial translations of the filter wall 10.
The fuel crossing the filter wall 10 passes into the second chamber 6, in which a separating means 11 is housed, which separating means 11 has the function of collecting the drops of water dispersed in the diesel fuel by coalescence, such as to separate the water from the diesel. Water has a higher specific gravity than diesel fuel, which causes the drops of water to tend to collect at the bottom of the chamber 6.
It is stressed that the phenomenon of coalescence of the drops of water is facilitated by the relatively slow speed of the fuel moving in the chamber 6. The fuel, in crossing the slot, is subjected to a sharp change in velocity, i.e. it speeds up as it crosses the slot 7, then slowing down internally of the chamber 6.
In the illustrated example the separating means 1 1 comprises a panel 12 which is supported by the shaped element 4 and is provided with a plurality of openings 120 which are closed by a usual hydrophobic net 121. In particular, a side of the hydrophobic net 121 rests on a step 410 afforded at the end of the portion 41 of the element 4, while the opposite side of the net 121 rests on a step 420 of the wall 42.
The water which collects on the bottom of the second chamber 6 is expelled through a usual means for evacuating 13, for example a usual tap valve located on the bottom of the chamber 6 itself. The fuel separated from the water exits from the second chamber through the outlet conduit 9. From the above description it can be seen that the filter group of the present invention advantageously provides a large water collection chamber which is able to collect a considerably greater quantity of water than known filter groups. In this way maintenance of the group can be less frequent, i.e. interventions to remove the water from the chamber are less frequently required.

Claims

Claims
1 ). A filter group comprising an external container provided with an inlet conduit and an outlet conduit for fuel, an internal volume of the container being divided into a first and a second chamber, which are in reciprocal communication, the first chamber being destined to house a filter wall and the second chamber being destined to collect water which separates from the fuel via a means for separating located internally of the container, characterised in that the first chamber and the second chamber are located side-by-side and develop in a direction according to a height of the container.
2). The filter group of claim 1 , characterised in that the height of the first and second chambers is equal to the height of the container.
3). The filter group of claim 1 , characterised in that a means for evacuating the water is located in the second chamber.
4). The filter group of claim 1 , characterised in that the filter wall is toroid.
5). The filter group of claim 1 , characterised in that the first chamber and the second chamber are separated by a wall affording a slot.
6). The group of claim 1 , characterised in that the means for separating the water is housed in the second chamber.
7). The group of claim 1 , characterised in that the means for separating comprises a panel provided with a plurality of openings which are closed by a hydrophobic net.
8). The group of claim 1 , characterised in that the inlet conduit of the fuel is associated to the first chamber.
9). The group of claim 1 , characterised in that the outlet conduit of the fuel is associated to the second chamber.
PCT/EP2007/059164 2006-09-28 2007-09-03 Fuel filter Ceased WO2008037561A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ITRE2006A000113 2006-09-28
IT000113A ITRE20060113A1 (en) 2006-09-28 2006-09-28 FILTERING UNIT FOR FUEL

Publications (1)

Publication Number Publication Date
WO2008037561A1 true WO2008037561A1 (en) 2008-04-03

Family

ID=38626750

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2007/059164 Ceased WO2008037561A1 (en) 2006-09-28 2007-09-03 Fuel filter

Country Status (2)

Country Link
IT (1) ITRE20060113A1 (en)
WO (1) WO2008037561A1 (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000938A3 (en) * 2008-06-23 2009-06-18 Ufi Innovation Ct Srl A fuel filter
WO2010094529A1 (en) * 2009-02-18 2010-08-26 Mann+Hummel Gmbh Water separator, in particular for fuel supply systems of internal combustion engines in motor vehicles
EP2955113A1 (en) * 2014-06-09 2015-12-16 Filton Systems Engineering Ltd Fuel tank valve assembly
WO2020241058A1 (en) * 2019-05-24 2020-12-03 京三電機株式会社 Fuel filter

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611490A (en) * 1947-09-30 1952-09-23 Selas Corp Of America Apparatus for separating immiscible liquids
US2739713A (en) * 1953-10-12 1956-03-27 Fram Corp Cartridge for removing undesirable free water and solid contaminant from liquid hydrocarbon
DE1028729B (en) * 1955-08-16 1958-04-24 Faudi Feinbau G M B H Device for separating water from liquid hydrocarbons
GB2109695A (en) * 1981-11-20 1983-06-08 Faudi Feinbau Device for separating water and filtering impurities from liquid hydrocarbons
US4892667A (en) * 1988-09-16 1990-01-09 Kaydon Corporation Method and means for dewatering lubricating oils
GB2273669A (en) * 1992-12-23 1994-06-29 Pall Corp Liquid/liquid separation
US20020162777A1 (en) * 2001-05-07 2002-11-07 Baah Richard A. Fuel filter and dryer
US20030121858A1 (en) * 2001-12-28 2003-07-03 Guanghua Yu Method and apparatus for separating emulsified water from fuel
WO2004014517A1 (en) * 2002-02-06 2004-02-19 Pall Corporation Coalescing and separating arrangements, systems, and methods for liquid mixtures
EP1653075A2 (en) * 2004-10-26 2006-05-03 Fleetguard, Inc. Automatic water drain for suction fuel water separators

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2611490A (en) * 1947-09-30 1952-09-23 Selas Corp Of America Apparatus for separating immiscible liquids
US2739713A (en) * 1953-10-12 1956-03-27 Fram Corp Cartridge for removing undesirable free water and solid contaminant from liquid hydrocarbon
DE1028729B (en) * 1955-08-16 1958-04-24 Faudi Feinbau G M B H Device for separating water from liquid hydrocarbons
GB2109695A (en) * 1981-11-20 1983-06-08 Faudi Feinbau Device for separating water and filtering impurities from liquid hydrocarbons
US4892667A (en) * 1988-09-16 1990-01-09 Kaydon Corporation Method and means for dewatering lubricating oils
GB2273669A (en) * 1992-12-23 1994-06-29 Pall Corp Liquid/liquid separation
US20020162777A1 (en) * 2001-05-07 2002-11-07 Baah Richard A. Fuel filter and dryer
US20030121858A1 (en) * 2001-12-28 2003-07-03 Guanghua Yu Method and apparatus for separating emulsified water from fuel
WO2004014517A1 (en) * 2002-02-06 2004-02-19 Pall Corporation Coalescing and separating arrangements, systems, and methods for liquid mixtures
EP1653075A2 (en) * 2004-10-26 2006-05-03 Fleetguard, Inc. Automatic water drain for suction fuel water separators

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009000938A3 (en) * 2008-06-23 2009-06-18 Ufi Innovation Ct Srl A fuel filter
CN102132028A (en) * 2008-06-23 2011-07-20 Ufi发明中心有限公司 A fuel filter
WO2010094529A1 (en) * 2009-02-18 2010-08-26 Mann+Hummel Gmbh Water separator, in particular for fuel supply systems of internal combustion engines in motor vehicles
CN102325986A (en) * 2009-02-18 2012-01-18 曼·胡默尔有限公司 Dehydrator, in particular for the fuel delivery system of an internal combustion engine in a motor vehicle
CN102325986B (en) * 2009-02-18 2014-06-11 曼·胡默尔有限公司 Dehydrator, in particular for the fuel delivery system of an internal combustion engine in a motor vehicle
US9194343B2 (en) 2009-02-18 2015-11-24 Mann+ Hummel Gmbh Water separator, in particular for fuel supply systems of internal combustion engines in motor vehicles
EP2955113A1 (en) * 2014-06-09 2015-12-16 Filton Systems Engineering Ltd Fuel tank valve assembly
US10024440B2 (en) 2014-06-09 2018-07-17 Filton Systems Engineering Ltd Fuel tank valve assembly
WO2020241058A1 (en) * 2019-05-24 2020-12-03 京三電機株式会社 Fuel filter

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Publication number Publication date
ITRE20060113A1 (en) 2008-03-29

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