WO2001047620A1 - Element filtrant se presentant sous forme de panneau, a bords d'extremite renforces, et son procede de production - Google Patents

Element filtrant se presentant sous forme de panneau, a bords d'extremite renforces, et son procede de production Download PDF

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Publication number
WO2001047620A1
WO2001047620A1 PCT/EP2000/011667 EP0011667W WO0147620A1 WO 2001047620 A1 WO2001047620 A1 WO 2001047620A1 EP 0011667 W EP0011667 W EP 0011667W WO 0147620 A1 WO0147620 A1 WO 0147620A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
stiffening element
fold
filter insert
end fold
Prior art date
Application number
PCT/EP2000/011667
Other languages
German (de)
English (en)
Inventor
Josef Rohrmeier
Maximilian Grad
Ulrich Hüngsberg
Johann Rackerseder
Original Assignee
Mhb Filtration Gmbh + Co. Kg
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 Mhb Filtration Gmbh + Co. Kg filed Critical Mhb Filtration Gmbh + Co. Kg
Publication of WO2001047620A1 publication Critical patent/WO2001047620A1/fr

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
    • B01D46/52—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material
    • B01D46/521—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material
    • 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
    • B01D46/0001—Making filtering elements
    • 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
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B60—VEHICLES IN GENERAL
    • B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
    • B60H3/00—Other air-treating devices
    • B60H3/06—Filtering
    • B60H3/0658—Filter elements specially adapted for their arrangement in vehicles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2271/00—Sealings for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2271/02—Gaskets, sealings
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2277/00—Filters specially adapted for separating dispersed particles from gases or vapours characterised by the position of the filter in relation to the gas stream
    • B01D2277/20—Inclined, i.e. forming an angle of between 0° and 90°

Definitions

  • the invention relates to a plate-shaped filter insert for a gas filter, which can be provided in particular for the interior of a vehicle and contains a folded filter web with an end edge reinforcement, according to the preamble of claim 1.
  • the invention also relates to a method for producing this filter insert.
  • a filter insert of the type mentioned is z. B. known from EP 759 319 A1.
  • a section through the filter insert according to FIG. 2 of the document mentioned shows that the end pleats of the folded filter web 1 are framed in U-profiles 3. This results in a frame-like reinforcement of the filter material along the last fold, so that the filter insert can be installed sealingly in a filter housing.
  • a seal 5 can be used, the sealing pressure of the seal 5, which is supported on the housing, not shown, being absorbed by the U-profile 3.
  • the use of the U-profile described aims at economical production of plate-shaped filter inserts.
  • the U-profile can be glued with a side strip 2, as a result of which the filter frame is closed.
  • the economic advantages achieved by this manufacturing process are limited by the fact that the U-profile 3 has to be joined to the filter web.
  • the end edge of the filter web is pushed into the U-profile, which creates a seal between these components.
  • the seal can only be incomplete, since a greater contact pressure of the U-slot against the paper cannot be provided without endangering the ability to mount the last paper fold in the U-slot.
  • Figure 5 of the said document z. B.
  • the object of the invention is therefore to provide a plate-shaped filter insert with end edge stiffening which is economical to manufacture and reliable in operation at the same time. This object is solved by the features of claim 1.
  • the plate-shaped filter insert according to the invention contains, in a known manner, a folded filter web, the ends of these folds having to be sealed tightly for the gas to be filtered.
  • This can e.g. B. done by a glue bead in the region of the ends of the folds, the z. B. closes the gaps on the raw side, which are formed by two adjacent folds. The outside of the last fold does not form a gap, but the end of the filter insert.
  • the filter insert can be installed in a housing, whereby a raw side is sealed from a clean side of the filter.
  • seals can additionally be provided on the filter insert, which, for. B. can consist of a foam. If there are slight pressure differences at the filter insert, no additional seals have to be provided. The contact pressure of the edge of the filter element on the housing is sufficient for the seal.
  • the filter insert according to the invention is characterized in that the stiffening element for stabilizing the end edge has a strip which is in direct connection with the edge of the end fold. In this area, a seal between see filter sheet and stiffening element guaranteed.
  • the edge of the end fold where the bar is located is also the edge of the filter sheet.
  • the bar By means of an economical joining process, it is provided with at least one flap which, when the stiffening element is mounted, lies directly on the outside of the end fold. Since this outside also forms the edge of the filter insert, this area is very easily accessible. However, the flap only partially covers the end fold, so that the stiffening element can be fixed to the filter insert by means of a tape which is glued to the outside and at the same time runs over the flap. To facilitate the joining process, the tape can first be glued to the tabs of the stiffening element and then this bandage can be fixed on the outside of the end fold.
  • the tape for fixing the stiffening element is designed to be self-adhesive.
  • Such adhesive strips are commercially available.
  • the stiffening element has, in addition to the at least one tab, a sword which, when the stiffening element is installed, plunges into the first intermediate space between the folds of the filter element. The last fold is between the sword and the at least one flap.
  • the stiffening element can be pre-fixed, and this can be placed on the end fold by a simple joining movement. The unit is then glued to the tape in the manner described.
  • the sword leads to an additional stiffening of the filter element.
  • the main stabilization of the filter insert is achieved by the bar, which extends across the entire width of the filter insert.
  • the tabs or the sword can be designed such that they do not extend across the entire width of the filter element.
  • a particularly favorable embodiment results from the fact that the sword is attached in the middle of the bar and two tabs each at the end of the bar. This results in a symmetrical structure of the stiffening element. If the projections of the tabs and the sword do not overlap on the end fold, the stiffening element can be produced particularly easily by injection molding. The mold division can be placed without undercuts approximately in the plane of the end fold to be assembled, which leads to a simple shape geometry of the injection mold. In addition, due to the missing overlap of the flaps and the sword, the stiffening element can be mounted particularly easily on the end fold. There is no slit into which the end gusset has to be inserted, so that the stiffening element can be easily attached by slightly bending the end gusset.
  • the tape for gluing the stiffening element consists of components which are required anyway for the production of the filter insert.
  • this can be a side band which is glued onto the filter web to seal the end faces of the filter insert and can be bent around the corners of the filter element for mounting the stiffening element.
  • this leads to a stiffening of the filter insert as a whole and to a reliable connection of the individual sides of the filter insert to a closed frame.
  • seal glued to the sides to mount the stiffening element.
  • the seal can run around the entire filter element or only be provided on the sides that are equipped with the stiffening elements.
  • the tabs are preferably designed so that they are crossed by the tape. As a result, reliable assembly is still possible even within a certain tolerance range. This is to be assessed differently if the sealing strip z. B. would be glued in half on the outside of the end fold and on the tab. If the tape is offset, it could happen that it would lie completely on the tab or the filter paper, so that it would not be fixed.
  • the filter sheets are folded, which have been cut to length according to the dimensions of the filter insert to be produced. Another possibility is the continuous production of folded filter webs, which are then cut to length.
  • the folded filter sheet must be sealed on the front. If a side band is used, this is placed, in particular glued, on the end face of the filter web for sealing.
  • the stiffening element is placed on the end fold. This can also be done before sealing the end faces of the filter web.
  • the outside of the end fold which is partially covered by the tabs, is glued to the tape in such a way that it adheres to both the end fold and the tabs.
  • the side band or the sealing strip can be used to fix the stiffening element.
  • FIG. 1 shows an air filter with the air filter element according to the invention in an exploded perspective view
  • FIG. 2 shows the top view A of the filter insert according to FIG. 1 before fixing the
  • Figure 3 is a perspective view of a cut filter insert with all-round foam seal. Description of the embodiments
  • An air filter according to Figure 1 can, for. B. can be provided for the air, which is intended for ventilation of the interior of a vehicle.
  • the filter has a housing consisting of upper shell 10 and lower shell 11.
  • the upper shell has an inlet 12 and forms a raw side 13 of the filter.
  • a clean side 14 is formed by the lower shell 11, which has an outlet 15.
  • the filter insert 16 is plate-shaped. It has a folded filter web 17, the end faces 18 of which are sealed with a side band 19. On an end fold 20 of the filter web, a stiffening element 21 is attached, which is fixed with the aid of tabs 22, which is held by the folded side band 19 on the outside of the end fold 20. The stiffening effect of the stiffening element is brought about by a strip 23. A sword is also attached to this, which dips into the filter web behind the end fold and therefore cannot be seen.
  • FIG. 2 shows a top view of the filter insert with the end fold 20.
  • the stiffening element 21 is inserted with the sword 24 into a fold space 25 behind the end fold 20.
  • the bar 23 looks out of the filter web 17.
  • the stiffening element 21 is held in that the sword 24 and the tabs 22 clamp the end fold 20.
  • Sword and tabs are attached to the bar 23 and do not overlap in the projection shown.
  • the side bands 19 are already glued to the end faces 18 of the filter insert and are longer than the length of the filter insert, which cannot be seen in FIG. 2. They can be folded over after the stiffening element 21 has been plugged on and then cover the tabs 22.
  • a lower edge 26 of the side bands 19 is provided in the housing for sealing the filter insert.
  • the exact position of the stiffening element 21 in the last of the fold spaces 25 is shown in FIG. 3.
  • the fold spaces are formed by adjacent folds 27.
  • the sword 24 is in the last space between folds pushed, which is formed by the end fold 20.
  • the bar 23 lies on an edge 28 of the filter web 17.
  • the end fold 20 is clamped between the sword 24 of the tab 22.
  • the side bands 19 end at the corners of the filter element.
  • the tab 22 is crossed by a circumferential glued sealing strip 29 made of foam.
  • the tolerance ranges a arise with regard to the position of the sealing strip 29 on the edge of the filter insert.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)

Abstract

La présente invention concerne un élément filtrant se présentant sous forme de panneau, notamment destiné à un filtre à air pour l'intérieur d'un véhicule. Le filtre à air (16) présente un élément de renfort (21), qui permet de rigidifier le pli d'extrémité (20) dudit filtre, au moyen d'une barre (23). Une entretoise (24) est introduite dans le dernier interstice de pli de la voie du filtre (17), afin d'assembler l'élément de renfort. Le pli d'extrémité (20) est serré entre l'entretoise et des pattes (22). Ces pattes (22) peuvent être collées au pli d'extrémité, au moyen d'une bande, par exemple par pliage des bandes latérales (19), ce qui permet de fixer l'élément de renfort (21). La solution proposée par cette invention se caractérise en ce que la production dudit filtre est très économique et en ce que l'élément filtrant est très fiable lors de son utilisation.
PCT/EP2000/011667 1999-12-24 2000-11-23 Element filtrant se presentant sous forme de panneau, a bords d'extremite renforces, et son procede de production WO2001047620A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1999163088 DE19963088B4 (de) 1999-12-24 1999-12-24 Plattenförmiger Filtereinsatz mit Endkantenverstärkung
DE19963088.7 1999-12-24

Publications (1)

Publication Number Publication Date
WO2001047620A1 true WO2001047620A1 (fr) 2001-07-05

Family

ID=7934559

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2000/011667 WO2001047620A1 (fr) 1999-12-24 2000-11-23 Element filtrant se presentant sous forme de panneau, a bords d'extremite renforces, et son procede de production

Country Status (2)

Country Link
DE (1) DE19963088B4 (fr)
WO (1) WO2001047620A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9468872B2 (en) 2012-10-01 2016-10-18 Entegris, Inc. Purification system with manifold assembly and removable filter cassette
US9943789B2 (en) 2011-10-03 2018-04-17 Entegris, Inc. Modular filter cassette

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10241748B4 (de) * 2002-09-10 2004-07-29 Helsa-Werke Helmut Sandler Gmbh & Co. Kg Filterelement
DE10324681B4 (de) * 2003-05-30 2016-06-09 Mann+Hummel Innenraumfilter Gmbh & Co. Kg Filterelement
DE112019002755T5 (de) 2018-05-31 2021-02-18 Cummins Filtration Ip, Inc. Filterbaugruppe einschliesslich einer abnehmbaren auslassleitung

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0759319A1 (fr) * 1995-08-18 1997-02-26 Knecht Filterwerke Gmbh Elément filtrant en forme de plaque et son procédé de fabrication
DE29815861U1 (de) * 1998-09-03 1998-11-19 Filterwerk Mann & Hummel Gmbh, 71638 Ludwigsburg Filter, insbesondere für den Einsatz im Zuluftbereich von Innenräumen
EP0891801A2 (fr) * 1997-07-18 1999-01-20 Knecht Filterwerke Gmbh Elément filtrant en forme de plaque

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4042358A (en) * 1976-05-14 1977-08-16 Research Products Corporation Filter media
US5201949A (en) * 1986-04-18 1993-04-13 E. I. Du Pont De Nemours And Company TiO2 manufacturing process

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0759319A1 (fr) * 1995-08-18 1997-02-26 Knecht Filterwerke Gmbh Elément filtrant en forme de plaque et son procédé de fabrication
EP0891801A2 (fr) * 1997-07-18 1999-01-20 Knecht Filterwerke Gmbh Elément filtrant en forme de plaque
DE29815861U1 (de) * 1998-09-03 1998-11-19 Filterwerk Mann & Hummel Gmbh, 71638 Ludwigsburg Filter, insbesondere für den Einsatz im Zuluftbereich von Innenräumen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US9943789B2 (en) 2011-10-03 2018-04-17 Entegris, Inc. Modular filter cassette
US9468872B2 (en) 2012-10-01 2016-10-18 Entegris, Inc. Purification system with manifold assembly and removable filter cassette
US9802142B2 (en) 2012-10-01 2017-10-31 Entegris, Inc. Purifier cassette

Also Published As

Publication number Publication date
DE19963088B4 (de) 2014-02-13
DE19963088A1 (de) 2001-06-28

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