EP1987247A1 - Conduit tubulaire filtrant - Google Patents

Conduit tubulaire filtrant

Info

Publication number
EP1987247A1
EP1987247A1 EP07726378A EP07726378A EP1987247A1 EP 1987247 A1 EP1987247 A1 EP 1987247A1 EP 07726378 A EP07726378 A EP 07726378A EP 07726378 A EP07726378 A EP 07726378A EP 1987247 A1 EP1987247 A1 EP 1987247A1
Authority
EP
European Patent Office
Prior art keywords
filter
tubular body
bag
pipe according
filter pipe
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.)
Withdrawn
Application number
EP07726378A
Other languages
German (de)
English (en)
Inventor
Jochen Linhart
Sascha Bauer
Michael Fasold
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.)
Mann and Hummel GmbH
Original Assignee
Mann and Hummel 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 Mann and Hummel GmbH filed Critical Mann and Hummel GmbH
Publication of EP1987247A1 publication Critical patent/EP1987247A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/02—Air cleaners
    • F02M35/024—Air cleaners using filters, e.g. moistened
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/02—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material
    • B01D46/06—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat
    • B01D46/08—Particle separators, e.g. dust precipitators, having hollow filters made of flexible material with means keeping the working surfaces flat the working surfaces forming a star shape
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
    • B01D46/56—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition
    • B01D46/62—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series
    • B01D46/64—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with multiple filtering elements, characterised by their mutual disposition connected in series arranged concentrically or coaxially
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10118—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements with variable cross-sections of intake ducts along their length; Venturis; Diffusers
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10124—Ducts with special cross-sections, e.g. non-circular cross-section
    • 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
    • F02M35/00—Combustion-air cleaners, air intakes, intake silencers, or induction systems specially adapted for, or arranged on, internal-combustion engines
    • F02M35/10—Air intakes; Induction systems
    • F02M35/10091—Air intakes; Induction systems characterised by details of intake ducts: shapes; connections; arrangements
    • F02M35/10137—Flexible ducts, e.g. bellows or hoses
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2275/00—Filter media structures for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2275/10—Multiple layers
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
    • B01D2279/60—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for the intake of internal combustion engines or turbines

Definitions

  • the invention relates to a filter pipe especially for
  • Intake air duct of an internal combustion engine with a tubular body in which at least one filter element is accommodated.
  • Filter tubes are used in the Ansaug Kunststoffest of internal combustion engines to direct the intake ambient air through a filter element, thereby leading filtered combustion air to the engine.
  • filter pipes at least two tubular bodies are provided, between which a filter housing for receiving a filter element is arranged. Through the raw air pipe body, the ambient air is supplied to the filter housing and passed to the engine after passing through the filter element through the clean air pipe body.
  • filter mats or similar block-shaped filter elements are common, which can be used in a correspondingly designed filter housing. If an increased filter performance is required in certain applications, then correspondingly larger sized filter mats must be used, which increases the size of the filter housing and thus the entire filter pipe considerably.
  • the present invention is based on the object
  • Filter pipe such that at cost-effective production of the filter pipe as large a filter surface in relation to the size of the filter pipe is ready.
  • a filter bag made of a flexible material is provided as a filter element, which is attachable to a region of its opening on the inside of the pipeline.
  • the filter bag extends from its opening to its sack bottom in the longitudinal direction of the pipeline. In this way, the length of the pipe can be exploited and, if necessary, by using a correspondingly long filter bag an optionally be provided to the end of the pipe reaching filter surface.
  • the filter bag made of flexible material can also be pushed through bends of the filter pipe, which can be carried out in the inaccessible bow areas in a simple manner, a filtration.
  • the filter bag and the inner wall of the tubular body are shaped such that arise in the circumferential direction of the pipe different distances between the filter bag and an inner wall of the tubular body, which ruled out that the filter bag applies to the inner wall of the tubular body and always a Clean air space between the pipe body and filter bag remains.
  • the filter bag and the inner wall of the tubular body preferably have different cross-sectional contours. An application of the filter bag to the inner wall of the tubular body can be advantageously prevented by protruding from the tubular body inwardly projecting ribs.
  • a cost-effective production of the filter pipe can be achieved by designing the filter bag and / or the tubular body with a polygonal cross-sectional contour.
  • the polygonal cross-sectional contour it is ensured that a plurality of projections of the respective cross-sectional contour are formed, at which the filter bag can create selectively on the circumference of the tubular body.
  • a star-shaped cross-sectional contour of the filter bag and / or of the tubular body has proved to be particularly advantageous.
  • the filter bag is provided with fastening means for attachment to the filter pipe, whereby the filter bag can be mounted in a simple manner during assembly of the filter pipe in the interior of the tubular body. It allows a clip connection a particularly simple assembly when the filter bag is provided in the region of its opening with a ring element spanning the opening, which can be latched in a retaining groove formed on the tubular body.
  • the ring element may be formed as an elastic spring ring.
  • the tubular body can be made of an elastically expandable material at least in the region of the retaining groove.
  • the tubular body is advantageously made of a mixture of a thermoplastic material and an elastic plastic, wherein a cost-effective production by plastic extrusion or extrusion blow molding is possible.
  • the plastic pipe body can be formed in a simple manufacturing process with the required cross sections.
  • a thermoplastic elastomer (TPE) is expediently used as the elastic plastic, the use of polyamide (PA) or, in particular, polypropylene (PP) being preferred.
  • PA polyamide
  • PP polypropylene
  • the polypropylene may be partially filled and in particular contain a proportion of talc.
  • plastic extrusion or extrusion blow molding tube body can be made in one piece in a simple manner, whereby an easy-to-use component with low installation costs can be integrated into the intake manifold.
  • inventive use of a filter bag made of flexible material no cross-sectional extensions for the use of the filter element are required because the required filter area is significantly achieved over the length of the filter bag in the longitudinal direction of the filter tube. In this way, endless pipe systems can be produced inexpensively without large cross-sectional jumps, with high production speeds can be achieved while maintaining quality.
  • the attachment of the filter bag is advantageous by clamping its circulating in the region of the bag opening edge between two adjacent pipe parts.
  • no shapes for receiving fasteners must be provided on the inner wall of the filter pipe, since the already for mutual Attachment provided end portions of the tubes are used for clamping the filter bag.
  • the flexible filter bag is a sectionally design of the tubular body as a bellows with creases particularly advantageous, wherein the tubular body is bendable by the bellows in these sections with respect to its longitudinal direction and the bellows adapts to any change in direction.
  • Filter performance can be effectively increased in a small space, since the filter bags with their filter bottoms extend through the openings of the next filter bag and partially run inside the following filter bag.
  • filter bags with different pore structure can be connected in a simple manner one behind the other, for example as a coarse separator and subsequent fine filter.
  • the filter bags are arranged spaced apart in the longitudinal direction of the filter tube, resulting in spaces between the filter layers for receiving the previously filtered air.
  • a simple and thus quick and inexpensive installation is given by attaching the filter bags to a mounting part, wherein the mounting part is used with the attached filter bags in the pipeline.
  • the mounting part is itself formed as a tube and is connected to the respective adjoining end portions of tubular bodies. In this way, with a regular maintenance of the filter pipe, the mounting part with the filter bags exchanged in a few steps and new filter bags are used.
  • the filter bag is preferably made of paper or non-woven.
  • the flexible bag material is folded with little manufacturing effort in the intended for the filter bag cross-sectional contour.
  • FIG. 2 shows a section through the filter pipe according to N-II in Fig. 1, 3 shows a cross section corresponding to the section N-II with an alternative design of the filter pipeline,
  • Fig. 5 shows a cross section of an attachment of filter bags with a Montagerohrteil.
  • Fig. 1 shows the cross section of a filter pipe 1 for the intake manifold of an internal combustion engine, not shown here with a tubular body 5, which is made continuously by extrusion blow molding.
  • the tubular body 5 is integrally formed and is connected with its formed at the ends of flanges 16 to pipe socket 24 of the intake manifold or to the throttle.
  • the tubular body 5 is configured in sections with folds 10 or creases, whereby the tubular body is bendable in these sections 9.
  • the tube body 5 is flowed through by the sucked air in the longitudinal direction 11, wherein the incoming dirty air is passed through filter bags 2, 3.
  • the filter bags consist of fleece, paper or other filtration media and are therefore flexible.
  • two spaced apart in the longitudinal direction 11 filter bags 2, 3 are provided.
  • the filter bags are fastened with their edges in the region of an opening 4 on the inner wall 6 of the tubular body 5.
  • a clip connection is provided, wherein the filter bags 2, 3 are provided in the region of their openings 4, 4a with an opening 4, 4a spanning annular spring element 7 which is engageable in a formed on the tubular body 5 holding groove 8.
  • the retaining grooves 8 are formed continuously on the circumference of the inner wall 6 of the tubular body 5 and are transverse to the longitudinal direction 11, whereby the opening 4, 4a of the filter bags 2, 3 set up the largest possible inlet cross section of the filter bags.
  • the filter bags 2, 3 extend in the longitudinal direction of the pipe 5 and close to their sack bottom a large interior and form a very large filter area corresponding to the bag length. Due to the length of the bag can without enlargement of the tube cross section a larger Filter surface are provided in the pipe direction for the passing combustion air.
  • a plurality of filter bags 2, 3 can be installed in the pipeline 1 by a filter bag 2 with its sack bottom 14 through the opening 4a of the filter bag following in the longitudinal direction 11 3 is passed through and thereby extends partially in the interior.
  • an enlarged filter surface can be provided by intermeshing filter bags 2.
  • This filter bags are used with tapering to the filter bottom cross-section, which ensures that the projecting into the following filter bag 3 filter bag 2 does not come into contact with the other filter bag 3.
  • the consisting of flexible nonwoven, paper or other filtration material filter bag can be easily inserted into the tube body 5 and adapts to any possible bending of the tubular body 5, without additional deformation measures are required.
  • the incoming through the pipe socket 24 dirty air passes through the opening 4 of the longitudinal direction 11 of the pipe 5 front filter bag 2 in the interior, which is the dirty air side 12.
  • the clean air space 13 of the first filter bag 2 simultaneously forms the raw air side of the filter bag 3 following in the longitudinal direction 11.
  • the filter bag lying in the longitudinal direction 11 can be used as coarse separator with coarse filter material, while the subsequent filter 3 with correspondingly fine pores as a fine filter is used. With such a step filtering can be carried out even with a short length of dirt by appropriate length of the filter bags 2 complete filtering even with significant amount of dirt particles.
  • FIG. 2 shows a cross section of the filter pipe according to the line N-II in Fig. 1.
  • the tubular body 5 and the filter bag 2 have different cross-sectional contours, thereby preventing that the filter bag to the inner wall 6 of the tubular body 5 applies
  • a filter bag 2 is provided with an approximately circular cross-section, while the tube body 5 has an approximately star-shaped cross-sectional contour.
  • the cross-sectional contour of the tubular body 5 ensures that in the circumferential direction constantly different distances A between the inner wall 6 and the filter bag 2 are present and thus a sufficiently large clean air space 13 is ensured.
  • Fig. 3 shows an alternative embodiment in which a filter bag 2 is arranged with a polygonal or star-shaped cross-sectional contour in the tubular body 5.
  • the filter bag 2 is placed by loops 17, 18 in loops, so that the filter bag punctiform rests with the outer folds 17 on the inner wall 6 of the tubular body 5 and the inner folds 18 limit the clean air space 13.
  • Fig. 4 shows a simple attachment of the filter bag 2 in the tubular body 5, which is particularly advantageous in a multi-part design of the pipeline.
  • two adjoining pipe parts 17, 18 are formed at their end portions with flanges which are brought into register with each other and fixed to each other. Between the flange collar 19 of the assembled pipe sections 17, 18 of the circumferential edge 20 of the filter bag 2 is clamped in the region of its opening and thereby the filter bag 2 is held on the tubular body 5.
  • Fig. 5 shows a cross section of a filter tube with two filter bags 2, 3, which are spaced from each other in the longitudinal direction of the filter tube 5 are attached to a tubular mounting part 21.
  • the mounting part 21 has a contour corresponding to the pipeline and is mounted between two adjacent pipe sections 17a, 18a of the pipeline 5.
  • the mounting part 21 by means of bolts or similar fastening elements 22 on a back 23 of the adjacent Pipe sections 17a fixed.
  • the filter bag 3 and the pipe section 18 a is fixed to a bolt or a fastening element 22 a of the mounting part 21.

Landscapes

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

Abstract

L'invention concerne des conduits tubulaires (1), en particulier pour le système d'aspiration d'un moteur à combustion interne, qui comprend un corps tubulaire (2) dans lequel au moins un élément de filtration (2, 3) est repris. Pour obtenir une surface de filtration aussi grande que possible par rapport à la taille du conduit tubulaire filtrant tout en pouvant fabriquer le conduit tubulaire filtrant de manière économique, on propose d'utiliser comme élément filtrant un sac de filtre (2, 3) constitué d'un matériau flexible et qui peut être fixé sur le corps tubulaire (5) dans la zone de son ouverture (4, 4a).
EP07726378A 2006-02-24 2007-02-14 Conduit tubulaire filtrant Withdrawn EP1987247A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE202006003137U DE202006003137U1 (de) 2006-02-24 2006-02-24 Filterrohrleitung
PCT/EP2007/051422 WO2007096280A1 (fr) 2006-02-24 2007-02-14 Conduit tubulaire filtrant

Publications (1)

Publication Number Publication Date
EP1987247A1 true EP1987247A1 (fr) 2008-11-05

Family

ID=37976821

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07726378A Withdrawn EP1987247A1 (fr) 2006-02-24 2007-02-14 Conduit tubulaire filtrant

Country Status (11)

Country Link
US (1) US8029586B2 (fr)
EP (1) EP1987247A1 (fr)
JP (1) JP5048686B2 (fr)
KR (1) KR20080103545A (fr)
CN (1) CN101421505B (fr)
BR (1) BRPI0708255A2 (fr)
CA (1) CA2643002A1 (fr)
DE (1) DE202006003137U1 (fr)
MX (1) MX2008010851A (fr)
RU (1) RU2008137970A (fr)
WO (1) WO2007096280A1 (fr)

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US8506664B2 (en) * 2006-02-24 2013-08-13 Mann +Hummel GmbH Filter pipeline
DE102006045985A1 (de) * 2006-09-27 2008-05-21 Mann + Hummel Gmbh Filtereinrichtung, insbesondere zur Filtration von Verbrennungsluft in Brennkraftmaschinen
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DE202007011099U1 (de) * 2007-08-08 2008-12-18 Mann + Hummel Gmbh Filtereinrichtung
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Also Published As

Publication number Publication date
US20090031681A1 (en) 2009-02-05
WO2007096280A1 (fr) 2007-08-30
CA2643002A1 (fr) 2007-08-30
JP2009527689A (ja) 2009-07-30
US8029586B2 (en) 2011-10-04
CN101421505B (zh) 2015-02-04
RU2008137970A (ru) 2010-03-27
DE202006003137U1 (de) 2007-07-12
JP5048686B2 (ja) 2012-10-17
CN101421505A (zh) 2009-04-29
KR20080103545A (ko) 2008-11-27
MX2008010851A (es) 2008-11-14
BRPI0708255A2 (pt) 2011-05-24

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