WO2014179854A1 - Agencement structural pour ensemble d'étanchéité d'un filtre à carburant - Google Patents

Agencement structural pour ensemble d'étanchéité d'un filtre à carburant Download PDF

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Publication number
WO2014179854A1
WO2014179854A1 PCT/BR2014/000151 BR2014000151W WO2014179854A1 WO 2014179854 A1 WO2014179854 A1 WO 2014179854A1 BR 2014000151 W BR2014000151 W BR 2014000151W WO 2014179854 A1 WO2014179854 A1 WO 2014179854A1
Authority
WO
WIPO (PCT)
Prior art keywords
sealing
filter
support base
housing
assembly
Prior art date
Application number
PCT/BR2014/000151
Other languages
English (en)
Portuguese (pt)
Inventor
Bruno DE AGUIAR
Fábio MOREIRA
Fernando JUN YOSHINO
Raphael RASCIO
Original Assignee
Mahle Metal Leve S.A.
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 Metal Leve S.A., Mahle International Gmbh filed Critical Mahle Metal Leve S.A.
Publication of WO2014179854A1 publication Critical patent/WO2014179854A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D35/00—Filtering devices having features not specifically covered by groups B01D24/00 - B01D33/00, or for applications not specifically covered by groups B01D24/00 - B01D33/00; Auxiliary devices for filtration; Filter housing constructions
    • B01D35/30—Filter housing constructions
    • 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
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/29—Filter cartridge constructions
    • B01D2201/291—End caps
    • B01D2201/296—Other than having a circular shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2201/00—Details relating to filtering apparatus
    • B01D2201/34—Seals or gaskets for filtering elements
    • B01D2201/347—Radial sealings

Definitions

  • the present invention relates to a seal assembly. More specifically, the present invention relates to a sealing assembly having a constructive arrangement capable of preventing or at least reducing the incidence of unwanted leaks.
  • the present invention also relates to a filter comprising the aforementioned sealing assembly.
  • the fuel supply system of a motor vehicle has the function of allowing fuel to be driven from the tank to the combustion chamber at substantially constant pressure.
  • such a system comprises a feed pump, a fuel filter, a manifold, a pressure regulator and injection valves.
  • the feeder pump makes it possible to transport fuel from the tank to the manifold through the fuel line.
  • the pressure regulating valve controls the pressure in said line.
  • the fuel also passes through a filter, positioned anywhere between the fuel pump and the injection valves, which will be detailed below.
  • filters consist of means capable of permitting the flow of a necessary substance such as combustible fluid and at the same time blocking the passage of undesirable substances such as solid particles. or liquid.
  • a fuel filter it is intended to retain impurities contained in the fuel by means of a filter element, such as paper, surrounded by a housing normally made of nylon, steel, aluminum or plastic.
  • a filter element such as paper
  • fuel filters protect the fuel supply system by eliminating or at least reducing impurities in the fuel from transport, storage and / or the tank itself, which prevents clogging of nozzle orifices.
  • the filters provide better engine performance and therefore an increased engine life.
  • the filter should provide high contaminant retention efficiency and low fuel flow resistance.
  • the filter must be designed to ensure good sealing and high resistance to internal pressures.
  • the filter has become an essential part as unwanted particles in the fuel can cause excessive wear on the injection system components.
  • the filter life depends on the amount of impurities contained in the fuel and varies according to the indicated mileage for each model / type of vehicle. In any case, the filter must be changed periodically for preventive maintenance.
  • the filter is normally discarded in its entirety at the end of its useful life as it is not possible to separate the filter element from the housing for replacement as the filter consists of a part comprising a permanently closed housing with the filter element already mounted inside.
  • the carcass material is not usually biodegradable.
  • the fuel filter is made of different materials, namely the shell material and the filter element material, as they are a single piece, it is difficult or even impossible to separate these materials into one. Proper disposal of waste that is environmentally friendly.
  • WO 2012/083405 a fuel filter whose filter element can be separated from the housing.
  • This filter is provided with a detachable cover to the housing, allowing replacement of the filter element without the need to discard the housing and also without the need to disconnect the filter from the fuel line.
  • the filter is also equipped with housing that accommodates radial sealing rings to prevent undesirable fuel leakage, which could reduce the performance of the fuel system and the risk of fire due to combustion of the fuel.
  • a typical failure mode observed in these radial O-ring housings is the loss of sealing function caused by tooling such as injection molds that already have a certain level of wear. More specifically, these molds generate parting lines in the sealing regions of the housing parts during the injection process, which may cause unwanted leakage. Such parting lines are usually generated because the constructive arrangement of the housing parts / parts does not allow the construction of an injection tooling where the parting line occurs in another region.
  • an object of the present invention is to provide a constructive arrangement applied to a sealing assembly and a filter that is capable of providing a safe and efficient sealing between parts, eliminating or at least reducing known limitations of the state of the art.
  • Still another object of the present invention is to provide a sealing assembly and a filter in which its sealing efficiency is not influenced or at least less influenced by the condition of the production tools with respect to known state sealing assemblies and filters. of technique.
  • the present invention aims to provide a sealing assembly and a filter capable of providing one or more sealing housings which do not allow or at least reduce the occurrence of undesirable leaks with respect to sealing assemblies known in the prior art.
  • sealing assembly comprising at least one sealing ring; a closing piece; and a support base fixedly associated with the closure, wherein the closure and support base form at least one seal housing configured to accommodate the seal ring.
  • the sealing housing is formed by a first sealing portion comprised of the closing part; and a second sealing portion comprised of the support base;
  • closure part and the support base are configured by parting line-free injection molds in the first sealing portion and the second sealing portion, respectively;
  • the closure is configured by an injection mold whose parting line is perpendicular to a transverse geometric axis of the closure;
  • the support base is configured by an injection mold whose parting line is perpendicular to a transverse geometric axis of the support base;
  • the support base is fixedly associated to the closing part by rotational welding.
  • a filter comprising a housing; a lid configured to close the housing; a filter element disposed within the housing; and a sealing assembly provided with at least one sealing ring.
  • a sealing assembly comprises a closure piece dissociable from the lid; and a support base fixedly associated with the closure, wherein the closure and support base form at least one seal housing configured to accommodate the seal ring. Said sealing assembly is removable with respect to the filter.
  • the closing part comprises a first sealing portion; and the support base comprises a second sealing portion;
  • closure part and the support base are configured by parting line-free injection molds in the first sealing portion and the second sealing portion, respectively;
  • the sealing ring consists of a sealing ring internal to the filter element
  • the sealing housing consists of an inner sealing housing configured to receive the inner sealing ring;
  • the sealing ring consists of a sealing ring external to the filter element, the outer sealing ring being configured to internally tangent a closed housing wall;
  • the seal housing consists of an outer seal housing configured to receive the outer seal ring;
  • the closure is configured by an injection mold whose parting line is perpendicular to a transverse geometric axis of the closure;
  • the support base is configured by an injection mold whose parting line is perpendicular to a transverse geometric axis of the support base;
  • the support base is fixedly associated to the closing part by rotational welding
  • the filter consists of a fuel filter.
  • Figure 1 shows an exploded view (assembly) of a seal assembly according to a particular embodiment of the present invention
  • Figure 2 shows a perspective view of the sealing assembly illustrated in Figure 1;
  • Figure 3 shows a side sectional view of an upper portion of the sealing assembly shown in Figure 1;
  • Figure 4 shows a perspective view of a sealing assembly closing part illustrated in the figure
  • Figure 5 shows a side view of the closure piece illustrated in figure 4.
  • Figure 6 shows a perspective view of a sealing assembly support base illustrated in Figure 1;
  • Figure 7 shows a side view of the support base illustrated in figure 6;
  • Figure 8 shows a sectional side view of a filter according to a particular embodiment of the present invention.
  • Figure 9 shows a perspective view of an upper portion of a seal assembly according to an alternative embodiment of the present invention.
  • Figure 10 shows an exploded view of the seal assembly shown in Figure 9;
  • Figure 11 shows a side view of a sealing assembly support base illustrated in Figure 9.
  • Figure 12 shows a detail view of the illustrated seal assembly illustrated in figure 9. DESCRIPTION OF EMBODIMENTS OF THE INVENTION
  • sealing and filter assembly objects of the present invention, will be described hereinafter according to a particular (but not limited) embodiment (since their embodiments may be implemented in different shapes and variations and as the desired application.
  • the sealing assembly and filter are applicable to automotive fuel filters.
  • the sealing assembly and filter may be used on other types of automotive vehicle filters, such as an air or oil filter, and even in non-automotive applications such as water filters.
  • FIG 8 shows a cross-sectional side view of a detachable filter 10, i.e. a filter 10 whose filter element 20 may be detached from filter 10.
  • Filter 10 generally comprises a housing 30 surrounding the filter element 20 and generally has a substantially cylindrical shape.
  • the housing 30 is comprised of an axially extending sidewall 31 and at its ends defines on one side an opening 32 for receiving a filter element 20 and on the other side a closed wall 33 incorporating an inlet 34 (or outlet) of the fluid that is filtered.
  • the filter 10 described herein is a filter for filtering a combustible fluid such as, but not limited to, gasoline, ethanol, diesel oil, etc. In this sense, the inlet (or outlet) 34 is connected to the fuel supply line (not shown).
  • the filter element material 20 is generally a low mechanical strength material.
  • the filter element 20 disposed within the housing 30 and may be dissociated from it.
  • the filter element 20 may have a correspondingly cylindrical shape as well.
  • the filter element 20 is made of a material suitable for containing unwanted elements which must be contained, and its interior is generally hollow to allow adequate flow of the fluid to be filtered.
  • the filter element 20 comprises, on one side, a flange 50 for supporting the closed wall 33 of the housing 30 and, on the other side, a sealing assembly 1, also object of the present invention, capable of provide the flow of fluid to be filtered and prevent unwanted leaks, especially from the interior of the housing 30 to the interior of the lid 40.
  • the sealing assembly 1 is removable relative to the filter 10.
  • Figure 8 also discloses a filter cap 40 comprising a sidewall 41 which defines a continuous perimeter and delimits on one side an opening 42 for receiving the filter element 20 and securing to the housing 30 and FIG.
  • a closed wall 43 is integral with side wall 41 and incorporates an outlet 44 (or inlet) of the fluid being filtered.
  • the outlet 44 connects to a fuel supply line (not shown).
  • the lid 40 is configured to close the housing 30.
  • the fluid outlet 44 of this embodiment extends, on one side, to the outer portion of the cap 40 and, on the other hand, to the inner portion of the cap 40, designed to fit into a central opening 68 (FIG. 2) provided for in FIG. Seal Assembly 1.
  • a central opening 68 FIG. 2
  • the central opening 68 of the seal assembly 1 and the outlet 44 provided in the cap 40 should be substantially aligned.
  • sealing assembly 1 is provided with at least one sealing ring 71, 72 which may consist, for example, of an O-ring consisting of a type of rubber or silicone.
  • sealing assembly 1 comprises a plurality of sealing rings 71, 72. More particularly, sealing ring 71, 72 consists of a sealing ring 71 internal to the filter element 20. This inner sealing ring 71 has the function of the gap between outlet 44 and central opening 68. Additionally or optionally, sealing ring 71, 72 consists of a sealing ring 72 external to the filter element 20. Such an external sealing ring 72 is configured to internally tangent. closed wall 33 of housing 30.
  • the sealing assembly 1 also comprises a closing part 60, illustrated in figures 1 to 5, dissociable from the cap 40.
  • the seal assembly 1 further comprises a support base 61, illustrated in figures 1, 2, 3, 6 and 7, fixedly associated with the closure piece 60. This fixation is preferably but not necessarily made by rotational welding. .
  • sealing assembly 1 comprises a plurality of sealing housings 62, 63. More particularly, sealing housing 62, 63 consists of an inner sealing housing 62 configured to receive the inner sealing ring 71. Additionally or optionally, the sealing housing 62, 63 consists of an outer sealing housing 63 configured to receive the outer sealing ring 72. Note that the outer sealing ring 72 has the function of sealing the gap between the closing part 60, the bearing base 61 and the filter housing 30.
  • the closure 60 comprises a first sealing portion 64, 65 and, on the other hand, the support base 61 comprises a second sealing portion 66, 67, further according to Figure 3.
  • the closing part 60 comprises a plurality of first sealing portions 64, 65.
  • the first sealing portion 64, 65 consists of a first inner sealing portion 64 and additionally or optionally consists of a first outer sealing portion 65.
  • the base 61 comprises a plurality of second sealing portions 66, 67.
  • the second sealing portion 66, 67 consists of a second inner sealing portion 66 and additionally or optionally consists of a second sealing portion.
  • outer sealing portion 67 is
  • the first sealing portion 64, 65 of the closure 60 and the second sealing portion 66, 67 of the support base 61 form the sealing housing 62, 63. More particularly, the first inner sealing portion 64 of the closure 60 and the second inner seal portion 66 of the support base 61 form the inner seal housing 62. On the other hand, the first outer sealing portion 65 of the closure 60 and the second outer sealing portion 67 of the support base 61 form the outer sealing housing 63.
  • closure 60 and support base 61 are formed by injection molding free of parting lines (or mold closing lines) in the first sealing portion 64, 65 and the second sealing portion 66, 67, respectively.
  • the seal housing 62, 63 is formed by portions obtained by injection molding free of parting lines in these forming portions of the seal housing 62, 63.
  • the closure 60 is configured (obtained or formed) by an injection mold whose parting line LP1 is substantially perpendicular to a transverse geometric axis x of the closure 60, as can be seen in Figure 5.
  • the closure 60 is configured by an injection mold whose parting line does not intersect the seal housing 62, 63.
  • the base 61 is configured (obtained or formed) by an injection mold whose partition line LP2 is substantially perpendicular to a transverse y axis of the base 61, as can be seen in Figure 7.
  • the support base 61 is configured by an injection mold whose parting line also does not intersect the seal housing 62, 63.
  • the present invention provides a sealing assembly and a filter that eliminate or at least reduce the incidence of unwanted leaks with respect to the prior art sealing and filter assemblies since the injection molds are free from partition in the forming portions of the seal housing 62, 63.
  • the sealing efficiency of the assembly is unaffected or at least less influenced by the condition of the production tools compared to the sealing assemblies and filters known in the state of the art, because even if the injection molds wear out with the use and with course over time, the closure 60 and the backing base 61 are capable of maintaining the sealing efficiency of the seal housing 62, 63 due to the absence of parting lines in the mold in the first sealing portion 64, 65 and the second sealing portion 66, 67 forming said sealing housing 62, 63.
  • the present invention allows sealing housings 62, 63 to be obtained through the interaction and cooperation of simple parts to be produced, namely the closing part 60 and the support base 61, without the need to implement complex changes in the injection mold, optimizing the process and production costs.
  • Figures 9 to 12 illustrate the seal assembly and / or its components in an alternative embodiment of the invention.
  • the components were referenced with the same numbers as the embodiment described above, plus an apostrophe (').
  • the closure piece 60 ' consists of a disc-shaped part having a relatively simpler constructive arrangement to the constructive arrangement of the closure piece 60 of the particular embodiment of the invention described above.
  • the closure 60 ' is also configured (obtained or formed) by an injection mold whose parting line is substantially perpendicular to a transverse geometric axis of the closure 60'.
  • the closing part 60 ' is configured by an injection mold whose parting line does not intersect the sealing housing 62'.
  • the support base 61 ' also has a modified and relatively simpler constructive arrangement to the constructive arrangement of the support base 61 of the particular embodiment described above.
  • the base 61 ' is formed (obtained or formed) by an injection mold whose partition line LP2' is substantially perpendicular to a transverse geometric axis y 'of support base 61' as seen in Figure 11.
  • support base 61 ' is configured by an injection mold whose parting line also does not intersect the housing of seal 62 '.
  • the closure 60 'and the support base 61' are mutually interlocked, forming the sealing housing 62 'in which the sealing member 71' is disposed. .

Landscapes

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

Abstract

La présente invention concerne un agencement structural destiné à un ensemble d'étanchéité (1, 1') pouvant empêcher ou au moins réduire l'incidence de fuites indésirables. Cet ensemble d'étanchéité (1, 1') comprend au moins un anneau d'étanchéité (71, 72, 71'); une pièce de fermeture (60, 60'); et une base d'appui (61, 61') associées de manière fixe à la pièce de fermeture (60, 60'), ladite pièce de fermeture (60, 60') et la base d'appui (61, 61') formant au moins un logement d'étanchéité (62, 63, 62') conçu pour recevoir l'anneau d'étanchéité (71, 72, 71'). La présente invention concerne un filtre à carburant (10) possédant cet ensemble d'étanchéité (1, 1'). Ledit ensemble d'étanchéité (1, 1') est amovible par rapport au filtre (10).
PCT/BR2014/000151 2013-05-10 2014-05-09 Agencement structural pour ensemble d'étanchéité d'un filtre à carburant WO2014179854A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BRBR1020130116637 2013-05-10
BR102013011663A BR102013011663A2 (pt) 2013-05-10 2013-05-10 conjunto de vedação e filtro

Publications (1)

Publication Number Publication Date
WO2014179854A1 true WO2014179854A1 (fr) 2014-11-13

Family

ID=51866561

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/BR2014/000151 WO2014179854A1 (fr) 2013-05-10 2014-05-09 Agencement structural pour ensemble d'étanchéité d'un filtre à carburant

Country Status (2)

Country Link
BR (1) BR102013011663A2 (fr)
WO (1) WO2014179854A1 (fr)

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2786109A1 (fr) * 1998-11-19 2000-05-26 Orelis Module de filtration et procede de montage etanche des extremites du module
DE60123499T2 (de) * 2000-02-16 2007-05-03 Stanadyne Corp., Windsor Ökologische Filterpatrone für Kraftstoff und Filteraufbau
US20070262014A1 (en) * 2004-06-17 2007-11-15 Hydac Filtertechnik Gmbh Filtering Apparatus and Filter Element
WO2012083405A1 (fr) * 2010-12-23 2012-06-28 Mahle Metal Leve S.A. Filtre à combustible
CN202478706U (zh) * 2011-12-05 2012-10-10 杭州科百特过滤器材有限公司 一种长度可调节的圆筒滤芯

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2786109A1 (fr) * 1998-11-19 2000-05-26 Orelis Module de filtration et procede de montage etanche des extremites du module
DE60123499T2 (de) * 2000-02-16 2007-05-03 Stanadyne Corp., Windsor Ökologische Filterpatrone für Kraftstoff und Filteraufbau
US20070262014A1 (en) * 2004-06-17 2007-11-15 Hydac Filtertechnik Gmbh Filtering Apparatus and Filter Element
WO2012083405A1 (fr) * 2010-12-23 2012-06-28 Mahle Metal Leve S.A. Filtre à combustible
CN202478706U (zh) * 2011-12-05 2012-10-10 杭州科百特过滤器材有限公司 一种长度可调节的圆筒滤芯

Also Published As

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