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WO1996019279A1 - Bloc filtrant pour gaz - Google Patents

Bloc filtrant pour gaz Download PDF

Info

Publication number
WO1996019279A1
WO1996019279A1 PCT/EP1995/004598 EP9504598W WO9619279A1 WO 1996019279 A1 WO1996019279 A1 WO 1996019279A1 EP 9504598 W EP9504598 W EP 9504598W WO 9619279 A1 WO9619279 A1 WO 9619279A1
Authority
WO
WIPO (PCT)
Prior art keywords
filter
package according
filter package
gas side
threads
Prior art date
Application number
PCT/EP1995/004598
Other languages
German (de)
English (en)
Inventor
Otto Krogmann
Original Assignee
Camfil 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 Camfil Gmbh filed Critical Camfil Gmbh
Publication of WO1996019279A1 publication Critical patent/WO1996019279A1/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
    • B01D46/523—Particle separators, e.g. dust precipitators, using filters embodying folded corrugated or wound sheet material using folded, pleated material with means for maintaining spacing between the pleats or folds
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/083—Filter cloth, i.e. woven, knitted or interlaced material of organic material
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/08—Filter cloth, i.e. woven, knitted or interlaced material
    • B01D39/086—Filter cloth, i.e. woven, knitted or interlaced material of inorganic 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
    • B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/04—Additives and treatments of the filtering material
    • B01D2239/0471—Surface coating material
    • B01D2239/0492—Surface coating material on fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2239/00—Aspects relating to filtering material for liquid or gaseous fluids
    • B01D2239/08—Special characteristics of binders
    • B01D2239/086—Binders between particles or fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D2265/00—Casings, housings or mounting for filters specially adapted for separating dispersed particles from gases or vapours
    • B01D2265/06—Details of supporting structures for filtering material, e.g. cores

Definitions

  • the invention relates to a filter package according to the preamble of claim 1.
  • cover grids e.g. made of sheet metal or plastic injection molded parts. This design is complex in the individual parts and assembly.
  • a known filter package (US 4 135 900 A, FIGS. 8 to 10) lies with its clean gas side on stiff, flat surfaces
  • the object of the invention is to provide mechanical protection for the sensitive pleated filter material in a cost-effective manner.
  • the flexibility of the grid allows the grid to be used to manufacture the filter pack e.g. to be removed from a roll and to be attached to the filter material during or after the completion of the zigzag-folded filter material.
  • the distance between the threads can e.g. 3 to 5 mm and in any case be so large that that caused by the grid
  • the grid preferably has high resistance to stretching in all directions.
  • the grid thus contributes significantly to the stability of the zigzag-folded filter material. It is particularly advantageous that the grille offers excellent mechanical protection of the zigzag-folded filter material against external influences, such as falling objects or the hands of the service personnel when handling the filter packs.
  • the securing properties of the grating can be improved by the features of claim 2.
  • the composite of the grid is promoted by its design.
  • the features of claim 4 facilitate the connection of the grating to the filter material.
  • the features of claim 5 are particularly suitable for the mechanical application of the grid to the zigzag-folded filter material.
  • the already existing adhesive strands of the filter material can be used for connection to the grid. These strands of adhesive can simultaneously perform the function in a manner known per se to keep the folds at an optimal distance from one another. In this way, the adhesive strands act as separators between the individual folds of the filter material.
  • the envelope can, for example, from a
  • Such an envelope can also be self-extinguishing.
  • connection at the fastening points e.g. done by fusing or gluing.
  • the result is an increased dimensional stability of the lattice with simultaneous flexibility.
  • the casing can e.g. from a
  • the features of claim 14 offer mechanical protection to the dust gas side of the filter package even when part of the dust gas side is occupied by the gas distribution element.
  • the gas distribution element is preferably in contact with the dust gas side and the grid is in contact with the gas distribution element.
  • the gas distribution element is preferably designed as a thin nonwoven fabric and causes the distribution of the
  • the sheet-like web acts as a laminator, which results in a good direction and homogenization of the gas flow.
  • the laminator is preferably on the associated side of the filter pack, and the grid is again on the laminator.
  • FIG. 3 shows a longitudinal section through part of another embodiment of the filter package
  • Fig. 5 shows a longitudinal section through part of yet another embodiment
  • FIG. 6 shows a longitudinal section through part of another embodiment of the filter pack.
  • a filter material 2 known per se is zigzag-folded, with the dust-gas side crest 3 of the folds defining a dust gas side 4 and the clean gas-side crest 5 defining a clean gas side 6 of the filter pack 1.
  • the dust gas is fed in the direction of an arrow 7.
  • the individual folds of the filter material 2 form V-shaped pockets on the dust gas side as well as on the clean gas side, which pockets are to be maintained in their optimal V shape in order to achieve the optimum filter effect, even during operation of the filter.
  • This is done according to FIG. 1 by means of adhesive strands 8 and 9, shown exaggeratedly thick for clarification, which on the one hand via the crest 3 on the dust gas side and on the other hand via the clean gas side Vertex 5 run.
  • Adjacent folds of the filter material 2 each have a division 12.
  • a coarse-mesh, flexible grid 13 is arranged.
  • Each grid 13 has longitudinal threads 15 arranged in a division 14 from one another and transverse threads 17 arranged in a division 16 (FIG. 2).
  • the longitudinal threads 15 and the transverse threads 17 are fastened to one another at their crossing points 18 by fastening points 19.
  • the tensile strength is particularly high if the longitudinal threads 15 and / or the transverse threads 17 each have a glass fiber bundle.
  • the fastening points can be formed by locally applied adhesive or by a covering 20 (FIG.
  • the wrappers 20, 21 can e.g. consist of a plastic or hot-melt adhesive, which become molten at elevated temperatures and create a firm bond to the other threads when re-cold.
  • the grids 13 can be prefabricated in this way and kept ready as endless web material, for example on a supply roll.
  • the lattice web is pulled off the supply roll and laminated onto the dust gas side 4 and / or clean gas side 6 during the production of the filter package 1.
  • the fact that the adhesive strands 8, 9 are adhesive until the temperature falls below a certain temperature can be used to advantage. If previously the grid 13 with its Longitudinal threads 15 placed on the apex of the adhesive strands 8, 9 and slightly pressed on, a firm bond between the adhesive strands 8, 9 and the longitudinal threads 15 is produced after the system has cooled. The path of the grid material 13 is then only cut to length.
  • the division 14 can preferably be the same or a multiple of the division 12. Then it is ensured that each longitudinal thread 15 has an apex of an adhesive strand 8, 9 opposite. In addition to these glue points or instead of these glue points, the longitudinal threads 15 can be connected to the opposite vertex 3, 5 of the filter material 2 essentially over their entire length, e.g. be glued. In this way, at least some of the folds of the filter material 2 can experience additional fixation relative to one another. This again promotes the efficiency and the service life of the filter packs 1.
  • the division 16 can be chosen to be the same as the division 14 or different therefrom.
  • the distance of the adhesive strands 8, 9 from one another in the direction of the longitudinal threads 15 is selected according to the special requirements for the dimensional stability of the V-shaped pockets of the filter material 2.
  • Fig. 3 illustrates one of the crossing points 18 and the associated attachment point 19, which was created by fusing the envelopes 20, 21 together. It is also indicated in Fig. 4 that the threads 15, 17 each consist of a glass fiber bundle.
  • longitudinal threads 15 can be connected to the tops of the adhesive strands 8 in the manner described above.
  • transverse threads 17 can be connected to the tops of the adhesive strands 8 in the manner described above.
  • transverse threads 17 can be connected to adhesive points 22 with apices of the adhesive strands 8 or with the apices 3 of the filter material 2.
  • the filter packet 1 according to FIG. 6 is equipped with the grille 13 on its dust gas side in the manner described above.
  • a sheet-like web 23 made of a gas-permeable, fine-mesh material, e.g. a non-woven fabric.
  • the web 23 acts as a laminator and has an extremely low pressure drop.
  • the path 23 causes the clean gas to exit at essentially the same direction and speed everywhere.
  • the web 23 is conveniently with the apices 5, e.g. by local adhesive to the apex of the adhesive strands 9 (Fig. 1) connected.
  • the grid 13 is placed on the lower or outlet side of the web 23 and is either held there by a circumferential frame (not shown in FIG. 6) or fastened to the web 23 by gluing or welding at least some of the longitudinal threads 15.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Textile Engineering (AREA)
  • Inorganic Chemistry (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)
  • Glass Compositions (AREA)

Abstract

La présente invention concerne un bloc filtrant (1) qui comporte une matière filtrante (2) pliée en accordéon, avec laquelle des crêtes (3) des plis situées du côté des gaz empoussiérés définissent un côté gaz empoussiérés (4) et des crêtes (5) du côté des gaz épurés définissent un côté gaz épurés (6). Immédiatement en amont du côté gaz empoussiérés (4) et immédiatement en aval du côté gaz épurés (6) est disposée une grille (13) souple à large mailles qui couvre toute la surface, grille constituée par des fils longitudinaux (15) et transversaux (17) placés à une certaine distance les uns des autres. Chacune des grilles (13) est fixée au bloc filtrant.
PCT/EP1995/004598 1994-12-22 1995-11-22 Bloc filtrant pour gaz WO1996019279A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE9420505U DE9420505U1 (de) 1994-12-22 1994-12-22 Gasfilterpaket
DEG9420505.1U 1994-12-22

Publications (1)

Publication Number Publication Date
WO1996019279A1 true WO1996019279A1 (fr) 1996-06-27

Family

ID=6917759

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP1995/004598 WO1996019279A1 (fr) 1994-12-22 1995-11-22 Bloc filtrant pour gaz

Country Status (2)

Country Link
DE (1) DE9420505U1 (fr)
WO (1) WO1996019279A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856346A1 (fr) * 1997-02-03 1998-08-05 Aaf International Ensemble de filtre plié
EP1199199A1 (fr) * 2000-10-18 2002-04-24 Valeo Dispositif de filtration destiné à équiper un appareil d'aération et/ou de chauffage et/ou de climatisation, notamment pour véhicule automobile, et adapté à réduire la vitesse de propagation d'une flamme
WO2003080222A1 (fr) * 2002-03-22 2003-10-02 Carl Freudenberg Kg Filtre a cassette
CN105377399A (zh) * 2013-08-21 2016-03-02 日东电工株式会社 过滤器滤材

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19837504C2 (de) * 1998-08-19 2001-02-08 Krantz Tkt Gmbh Filterelement

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479722A (en) * 1945-01-08 1949-08-23 Air Maze Corp Filter construction
FR2217049A1 (en) * 1973-02-15 1974-09-06 Carello & C Spa Fausto Air filter cartridge production - stabilisation of paper crimp with plastic strip
GB1542263A (en) * 1976-04-22 1979-03-14 Marshall D High temperature resistant fluid filter
GB2020995A (en) * 1978-05-22 1979-11-28 Ouest Cie A filter element
GB2156232A (en) * 1984-03-29 1985-10-09 Marshall D A G Reinforced pleated filtering material
US5236480A (en) * 1989-01-05 1993-08-17 Camfil Ab Air filter for workstations and methods of making and using such air filter

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2479722A (en) * 1945-01-08 1949-08-23 Air Maze Corp Filter construction
FR2217049A1 (en) * 1973-02-15 1974-09-06 Carello & C Spa Fausto Air filter cartridge production - stabilisation of paper crimp with plastic strip
GB1542263A (en) * 1976-04-22 1979-03-14 Marshall D High temperature resistant fluid filter
GB2020995A (en) * 1978-05-22 1979-11-28 Ouest Cie A filter element
GB2156232A (en) * 1984-03-29 1985-10-09 Marshall D A G Reinforced pleated filtering material
US5236480A (en) * 1989-01-05 1993-08-17 Camfil Ab Air filter for workstations and methods of making and using such air filter

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0856346A1 (fr) * 1997-02-03 1998-08-05 Aaf International Ensemble de filtre plié
EP1199199A1 (fr) * 2000-10-18 2002-04-24 Valeo Dispositif de filtration destiné à équiper un appareil d'aération et/ou de chauffage et/ou de climatisation, notamment pour véhicule automobile, et adapté à réduire la vitesse de propagation d'une flamme
WO2003080222A1 (fr) * 2002-03-22 2003-10-02 Carl Freudenberg Kg Filtre a cassette
CN1297335C (zh) * 2002-03-22 2007-01-31 卡尔弗罗伊登柏格两合公司 盒式过滤器
US7288130B2 (en) 2002-03-22 2007-10-30 Carl Freudenberg Kg Cassette filter
CN105377399A (zh) * 2013-08-21 2016-03-02 日东电工株式会社 过滤器滤材

Also Published As

Publication number Publication date
DE9420505U1 (de) 1995-02-02

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