WO2005102496A2 - Support a filtre notamment concu pour filtrer des liquides - Google Patents

Support a filtre notamment concu pour filtrer des liquides Download PDF

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Publication number
WO2005102496A2
WO2005102496A2 PCT/GB2005/001581 GB2005001581W WO2005102496A2 WO 2005102496 A2 WO2005102496 A2 WO 2005102496A2 GB 2005001581 W GB2005001581 W GB 2005001581W WO 2005102496 A2 WO2005102496 A2 WO 2005102496A2
Authority
WO
WIPO (PCT)
Prior art keywords
filter
mesh
fibre
spars
support
Prior art date
Application number
PCT/GB2005/001581
Other languages
English (en)
Other versions
WO2005102496A3 (fr
Inventor
Jonathan Mccallum Douglas
Original Assignee
Induction Technology Group Limited
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 Induction Technology Group Limited filed Critical Induction Technology Group Limited
Publication of WO2005102496A2 publication Critical patent/WO2005102496A2/fr
Publication of WO2005102496A3 publication Critical patent/WO2005102496A3/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids

Definitions

  • the invention relates to a filter support, such as a mesh support, especially for use in fluid filtration, and in particular for the filtration of air to be directed to the air intake of an internal combustion engine, a compressor, an air conditioning unit or the like.
  • a filter comprising a filter material e.g. a plastics foam.
  • the foam is not self supporting, especially under the conditions of service, as a result of which it is mounted on a metal skeleton or frame. It is an object of the invention to provide a filter which has improved properties such as weight, strength and/or stiffness.
  • the invention provides a filter comprising a filter material mounted on a support which comprises a mesh having a skeleton of hardened resin composition comprising carbon fibre and/or polyaramid fibre.
  • the invention further provides a filter comprising a filter material mounted upon a support comprising a lattice frame formed from a plurality of interconnected panels formed from a hardened resin composition comprising carbon fibre and/or polyaramid fibre.
  • the invention provides a method of producing a filter according to the said one aspect comprising a filter material mounted on a support, the method comprising winding on to a former an elongate string of hardenable resin composition comprising carbon and/or polyaramid fibre so as to make on the former a mesh structure having interstices, then hardening the unhardened resin to form an integral structure as the filter support, and then applying to the filter support a filter material.
  • the string used to make the mesh is preferably woven from fibres obtained from carbonised polymer such as polyacrylonitrile.
  • the fibres can be produced by oxidising polyacrylonitrile in air at, say, 230°C whilst applying tension, and then the oxidised product can be carbonised in an inert atmosphere such as nitrogen at about 100°C.
  • the resulting string has stiffness and can be load bearing.
  • the string can be woven using traditional weaving technology. More than one string may be present.
  • the fibres for use in the resin composition can be synthetic polyaramid fibre, for example such fibre sold under the Trademark KEVLAR.
  • Filters take a variety of shapes including cylinders, domes, and the like.
  • a support of this invention may be made in any required shape. While the support may be made integrally in one piece it may alternatively be made in several pieces which are subsequently joined e.g. interconnected together, e.g. by adhesive or welding.
  • the filter material may be of any known type, such as a foam e.g. of ethylene polymer such as polyethylene, urethane polymer such as polyurethanes or the like; or a flexible textile like material such as a cloth or felt which per se is not necessarily self supporting in use.
  • a foam e.g. of ethylene polymer such as polyethylene, urethane polymer such as polyurethanes or the like; or a flexible textile like material such as a cloth or felt which per se is not necessarily self supporting in use.
  • Figure 1 is a perspective of a mould used in the method of making the filter of Figure 2;
  • FIG. 2 is a perspective of one filter of the invention, parts having been removed;
  • Figure 3 is a perspective view of a filter frame according to a second embodiment of the invention.
  • Figure 4 is a perspective view of a cut-away portion of the filter frame of Figure 3 shown in detail;
  • Figure 5 is a perspective view of a filter frame according to a third embodiment of the invention.
  • Figure 6 is a perspective view of a cut-away portion of the filter frame of Figure 5.
  • Figure 7 shows the cut-away filter frame portion of Figure 6 in which the exposed domed surface is covered with a layer of filter material attached to the frame.
  • the filter frame comprises a generally tubular mesh frame F made from one or more lengths of string 'L' based on a carbon fibre composition.
  • the string is wound e.g. by hand onto the former or mould M which has grooves 'G' to guide the string to the intended positions.
  • the string is wound to form a mesh having interstices T.
  • the composition is then cold cured e.g. by application of pressure and/or heat cured, optionally with chemical acceleration. Extra curable composition may be applied to the crossover points 'P'.
  • An end of the frame may be a solid wall to allow fittings to pass therethrough to hold the filter to apparatus, not shown.
  • the formed mesh is then removed from the mould as a self supporting frame structure 'F' and trimmed as necessary.
  • the foam e.g. polyurethane foam A, is located on the frame 'F' by say a sliding interference fit to form the complete filter.
  • polyaramid fibre can be used such as that available under the Trademark KEVLAR.
  • Figure 3 shows a filter frame according to a second embodiment of the invention.
  • the filter frame 10 is of a domed rigid frame structure formed from a network of interconnected rigid spars 14, 16 of composite material comprising carbon fibre admixed with hardened resin.
  • the base 12 of the domed frame is of a generally rectangular shape with rounded corners.
  • the spars are interconnected at their crossing points resulting in a rigid frame in the appearance and shape of a net or cage.
  • polyaramid fibre may be used.
  • the interconnected spars 14, 16 intersect each other to form vertices V, the interconnected spars 14, 16 intersect perpendicular to each other, such that spars 14 are formed in a longitudinal direction and spars 16 are formed in a lateral direction. However, it will be appreciated that in alternative embodiments other angles may be chosen.
  • the interconnected spars form a mesh having interstices 'I'.
  • the interconnected spars terminate at each end at, and are connected to, a base 12 which extends around the periphery of the frame.
  • the base 12 has an 'L' shaped cross section, the interconnected spars terminate at, and are fixed to, the horizontal portion of the 'L' shaped base 12.
  • Suitable filter material can be placed over and cover the filter frame 10 such that a peripheral edge of the filter material would terminate at, and be secured, around the base.
  • base 12 could be of an alternative structure; and in other embodiments may not be present.
  • the network of composite material spars could be flat, cylindrical, conical or take any three dimensional shape.
  • the principal function of the spars is to support the filter material to prevent deformation under loads applied to it, including aerodynamic loads.
  • Figure 4 shows an area 'A' of the embodiment of Figure 3 in close up. It can be seen that the interconnected spars 14, 16 are of rectangular cross section, however it will be appreciated that alternative shapes could be used in other embodiments.
  • the vertices or crossing points V of the interconnected spars lie within the form of the spars at the their interconnection.
  • the spars are aligned such that an upper and lower surface of one spar is aligned with an upper and lower surface of a second spar. It will be appreciated that this need not be the case, in that the spars could pass one over or under the other, nor is it essential that the spars be of equal cross-section and/or shape.
  • the filter frame 110 incorporates the same basic externally domed shape as the frame of Figure 3 and 4.
  • the filter frame 110 has a substantially rectangular base 112, with rounded corners.
  • the filter frame 110 in this embodiment is a rigid structure formed from intersecting and interlinking panels 114 and 116 of composite material comprising carbon fibre within a hardened resin. Upper surfaces of the intersecting panels 114, 116 define the upper surface of the filter frame 110. The intersecting panels 114, 116 extend from the upper surface of the filter frame 110 towards the base 112 in a lattice array of open ended pockets 'P' of substantially square cross-section.
  • the composite material may comprise polyaramid fibre such as that available under the Trademark KEVLAR instead of or to supplement the carbon fibre.
  • the panels 114, 116 intersect and interlink at substantially 90° to one another forming longitudinal panels 114 and lateral panels 116. However, other angles are envisaged, nor is it essential that the intersecting panels form pockets of square cross-section.
  • the panels forming the filter frame 110 provide a rigid structure which has an influence upon the flow and direction of the flow of fluid, such as air, passing through the filter and filter frame.
  • the tubular structure defined by the intersecting panels tends to reduce velocity of fluid flowing in a direction transverse to the direction of filtration 'F', and to impart a directional fluid flow through the filter.
  • Figure 6 shows the filter frame 110 of Figure 5 where a portion of the filter frame has been cut away, such that the shape of a panel forming part of the filter frame 110 can be seen more clearly.
  • panel 116 extends throughout the cross-section of the filter frame.
  • the upper edges of the panels are shaped in a similar manner to the previously described embodiments, so as to form part of the support for filter material.
  • the filter material 122 is secured around a peripheral edge between the upper surface of the intersecting panels 114, 116 and the vertical portion of the 'L' shape defined by the cross- section of the base 112.
  • the fluid flow would be downwards through the filter material and then through the support structure. It is quite possible that in another arrangement, other rigid parts would be positioned above the filter material, or a smaller piece of the filter material might be placed inside each of the separate spaces formed by the panels of this type of filter support structure.
  • fluid will flow in the direction of arrow 'F'. Thereby any pressure created by the fluid flow will not tend to separate the filter material 122 away from the filter frame 110.
  • the filter material 122 may be separable from the filter frame for the purpose of cleaning or replacement.
  • the filter may take a variety of known shapes and the frame of the invention can be moulded to make any suitably shaped support.
  • the filter can be used to filter air, for example in the air intake of a combustion engine. In use, the air passes through e.g. filtering foam so particles of dust etc. are trapped therein. The air is then passed to the intake of an e.g. internal combustion engine.
  • filtration of other fluids is also envisaged, such as, but not limited to, fuel, oil or water. It is also envisaged that filters according to the present invention could be utilised outside the automotive industry, for example within the aircraft industry as a filter for aircraft engines.
  • the invention is not limited to the embodiments described and shown.
  • the frame need not be part cylindrical as shown in Figure 2, and the frame may be present within the thickness of the foam instead of just in contact with the inside wall.
  • the embodiments of air filter may be used in connection with any apparatus having an air intake and requiring or benefiting from air filtration.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Materials (AREA)

Abstract

La présente invention concerne un filtre comprenant une matière filtrante qui est montée sur un support présentant une maille dont le squelette est constitué d'une composition de résine durcie qui comprend des fibres de carbone et/ou de polyaramide. La présente invention concerne également un procédé pour produire un filtre qui consiste à enrouler sur une forme une chaîne allongée de composition durcissable comprenant des fibres de carbone et/ou de polyaramide, de manière que la forme produise une structure de maille qui présente des interstices, puis à faire durcir la résine non durcie, afin de former une structure intégrale servant de support à filtre, et enfin à appliquer une matière filtrante sur le support à filtre. En outre, cette invention concerne un filtre comprenant une matière filtrante qui est montée sur un support comprenant un cadre de grille formé de plusieurs panneaux interconnectés constitués d'une composition de résine durcie comprenant des fibres de carbone et/ou de polyaramide.
PCT/GB2005/001581 2004-04-26 2005-04-26 Support a filtre notamment concu pour filtrer des liquides WO2005102496A2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
GB0409347A GB0409347D0 (en) 2004-04-26 2004-04-26 Mesh, especially for air infiltration
GB0409347.2 2004-04-26

Publications (2)

Publication Number Publication Date
WO2005102496A2 true WO2005102496A2 (fr) 2005-11-03
WO2005102496A3 WO2005102496A3 (fr) 2006-01-19

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/GB2005/001581 WO2005102496A2 (fr) 2004-04-26 2005-04-26 Support a filtre notamment concu pour filtrer des liquides

Country Status (2)

Country Link
GB (2) GB0409347D0 (fr)
WO (1) WO2005102496A2 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7753513B2 (en) * 2002-09-25 2010-07-13 Brother Kogyo Kabushiki Kaisha Ink-jet head, filter assembly used for manufacturing the ink-jet head, and method for manufacturing the ink-jet head using the filter assembly
US8828115B2 (en) 2009-03-17 2014-09-09 Mann & Hummel Gmbh Support grid and alignment apparatus for a filter element and housing
IT201800007854A1 (it) * 2018-08-03 2020-02-03 Officine Metallurgiche G Cornaglia Spa Cartuccia filtro aria a pannello per motori endotermici

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104088736A (zh) * 2014-06-05 2014-10-08 浙江威泰汽配有限公司 一种瓦楞纸滤芯及滤清器

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197802A (en) * 1986-11-26 1988-06-02 Locker Air Maze Limited Filter
US20040003719A1 (en) * 2002-07-03 2004-01-08 Le Hung T. Multi port air filter

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2076489A5 (en) * 1970-01-16 1971-10-15 Beaudrey & Cie Synthetic resin filter frame - of fibre reinforced polyester resin
DE3012287C2 (de) * 1980-03-29 1985-08-08 Fröhlich & Wolff GmbH, 3436 Hessisch Lichtenau Gewebe und Verfahren zu seiner Ausrüstung
GB2244011A (en) * 1990-05-17 1991-11-20 Coal Ind Gas filter elements
JPH1182235A (ja) * 1997-09-04 1999-03-26 Denso Corp 蓄圧式燃料噴射装置
CA2383736A1 (fr) * 1999-09-03 2001-03-15 Xtreme Fibers, Inc. Formes en perfluoropolymere transformables a chaud
JP3703022B2 (ja) * 2001-12-27 2005-10-05 東洋エレメント工業株式会社 フィルタエレメント

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2197802A (en) * 1986-11-26 1988-06-02 Locker Air Maze Limited Filter
US20040003719A1 (en) * 2002-07-03 2004-01-08 Le Hung T. Multi port air filter

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch, Week 200356 Derwent Publications Ltd., London, GB; Class J01, AN 2003-591830 XP002345668 & JP 2003 190732 A (TOYO ELEMENT KOGYO KK) 8 July 2003 (2003-07-08) *
DATABASE WPI Section PQ, Week 199923 Derwent Publications Ltd., London, GB; Class Q53, AN 1999-268821 XP002345669 & JP 11 082235 A (NIPPONDENSO CO LTD) 26 March 1999 (1999-03-26) *

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7753513B2 (en) * 2002-09-25 2010-07-13 Brother Kogyo Kabushiki Kaisha Ink-jet head, filter assembly used for manufacturing the ink-jet head, and method for manufacturing the ink-jet head using the filter assembly
US8828115B2 (en) 2009-03-17 2014-09-09 Mann & Hummel Gmbh Support grid and alignment apparatus for a filter element and housing
IT201800007854A1 (it) * 2018-08-03 2020-02-03 Officine Metallurgiche G Cornaglia Spa Cartuccia filtro aria a pannello per motori endotermici
WO2020026179A3 (fr) * 2018-08-03 2020-05-14 Officine Metallurgiche G. Cornaglia S.P.A. Cartouche de filtre à air de type panneau pour moteurs à combustion interne
CN112601597A (zh) * 2018-08-03 2021-04-02 科纳利亚冶金股份有限公司 用于内燃机的板式空气过滤器滤芯

Also Published As

Publication number Publication date
GB0508378D0 (en) 2005-06-01
GB0409347D0 (en) 2004-06-02
WO2005102496A3 (fr) 2006-01-19
GB2414198A (en) 2005-11-23

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