USRE33272E - Filter cartridge for filtering apparatuses - Google Patents

Filter cartridge for filtering apparatuses Download PDF

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Publication number
USRE33272E
USRE33272E US07/372,055 US37205589A USRE33272E US RE33272 E USRE33272 E US RE33272E US 37205589 A US37205589 A US 37205589A US RE33272 E USRE33272 E US RE33272E
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US
United States
Prior art keywords
filter material
zig
thin
zag
filter
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.)
Expired - Fee Related
Application number
US07/372,055
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English (en)
Inventor
Ernst Turck
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Filing date
Publication date
Application filed filed Critical
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Publication of USRE33272E publication Critical patent/USRE33272E/en
Anticipated expiration legal-status Critical
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    • 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
    • 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

Definitions

  • the invention relates to a filter cartridge for filtering apparatuses for the removal of impurities from hot and/or highly pressurized, flowing gases, with zig-zag formed, folded, gas-penetrated filter material whose part surfaces, caused by the folding, between the fold lines, are arranged in relatively close juxtaposition to each other resulting in acute angles at the fold lines.
  • phenolic resin-saturated fiber materials are used, in particular gas-permeable papers, fibrous webs of various types, which consists of zig-zag formed, folded strips of this material.
  • the stability of the filter material depends on the actual material used. Filter materials of temperature-sensitive material lose stability with increasing temperature which gives disagreeable results, especially when under certain operating conditions as a result of the no longer existing stability of the filter material or the fold, the part surfaces of the filter material between the individual fold lines touch each other and possibly adhere to each other. This results in the whole active filter surface being more or less severely reduced, which leads to a considerable reduction in the performance of the filter.
  • filter materials of paper were given a stamp with knobs or the like, which, however, are only able to be of effect for the duration of their stability.
  • the filter material With the filters is question it provided that with higher temperatures of the gas-flow to be cleaned, the filter material is so strongly heated and softened that the knobs lose their original form and/or are pressed flat by the adhering part surfaces of a fold. This results in paper and similar filter materials being unsuitable for the filter cartridges in question.
  • the most advantageous are webs of fibrous material which, however, on the other hand, have the disadvantage of not being stable enough in shape.
  • the invention is based on the task of providing a filter cartridge for filter apparatuses which does not have the aforementioned disadvantages and with which a collapsing of neighbouring part surfaces of the filter material of a fold is avoided, with the efficiency of the filter being impaired to the slightest possible degree, if at all, and which stands up to the occurring strains in all operating conditions, i.e. especially with all possible temperatures and pressures of the gas-flow to be cleaned.
  • a preferably thin-walled plate which can be referred to as a strip, is arranged whose one edge in the inside of the fold is rectilinear and the other, opposite-lying edge is of zig-zag formation and that the bend or crest lines between the two leading edges steadily rise towards the medial plane of the plate.
  • FIG. 1 is a perspective view of a plate to be laid in a fold between two part surfaces of the zig-zag folded filter material
  • FIG. 2 is a section through a fold of the zig-zag folded filter material in which a plate according to FIG. 1 has been placed;
  • FIG. 3 is a top view on the open side of the fold of the filter material according to FIG. 2.
  • the filter material 11 of a filter cartridge of customary design, placed in filtering apparatuses is zig-zag folded, with the material extending from the fold lines at acute angles.
  • the zig-zag folded filter material can be arranged along a straight line, a curved line or a circle.
  • the part surfaces 12, 13 of the filter material 11 form one fold respectively.
  • the zig-zag folded filter material 11 is commonly blown against from one side, with the impurities of the gas flow remaining on the filter material or depositing in the folds 14 between the part surfaces 12 and 13 of the filter material until a certain density is reached and it becomes necessary to clean the filter material.
  • a gas flow is passed through the filter in the opposing direction, which removes the agglomerated impurities from the surface of the filter material, which then fall into a collecting space and can be drawn off.
  • a plate, strip of material 15 formed according to the invention according to FIG. 1 is respectively placed in each fold, having a straight-formed edge 16 and the opposing edge 17 being zig-zag formed in such a way that the bend or crest lines 18 between the two edges 16 and 17 rise steadily towards the medial plane 19 of the plate 15.
  • part surfaces 20 and 21 are formed which enclose an angle 22 in the area of the bend and crest lines 18, said angle being between about 90° and about 120°.
  • channels are formed which steadily expands towards the delivery end of each of said folds 14 and which provide a flow-favorable discharge of the gas having passed through the filter material.
  • the plate 15 supporting the filter material 11 or the folds 14 of the filter material can be of any suitable material, e.g. strips of of thin metal sheet, but also of an inherently stable plastic material.
  • the plate 15 may be provided with a reinforcement along its straight edge 16.
  • This reinforcement can, in the case of a metal plate, be formed by the flanged edge, or by a bead, particularly when the plate is of plastic material.
  • the zig-zag folded filter material is commonly supported on the discharge side, usually with a perforated sheet or grid.
  • This support material is bound to impair the discharge of the gas having passed through the filter material, to a greater or lesser degree.
  • This disadvantage can be avoided with the filter cartridge formed according to the invention if the plates 15 inserted in the folds 14 of the zig-zag folded filter material 11 are supported at their ends, at the rear zig-zag formed edge 17, by a flange which, for example, can be arranged on the top and bottom of the filter material of the filter cartridge. With such a formation there is no need for supporting the zig-zag folded filter material in the hitherto customary manner.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
US07/372,055 1983-03-31 1984-03-28 Filter cartridge for filtering apparatuses Expired - Fee Related USRE33272E (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19833311863 DE3311863A1 (de) 1983-03-31 1983-03-31 Filterpatrone fuer filterapparate
DE3311863 1983-03-31

Related Parent Applications (1)

Application Number Title Priority Date Filing Date
US06/678,282 Reissue US4619676A (en) 1983-03-31 1984-03-28 Filter cartridge for filtering apparatuses

Publications (1)

Publication Number Publication Date
USRE33272E true USRE33272E (en) 1990-07-24

Family

ID=6195276

Family Applications (2)

Application Number Title Priority Date Filing Date
US06/678,282 Ceased US4619676A (en) 1983-03-31 1984-03-28 Filter cartridge for filtering apparatuses
US07/372,055 Expired - Fee Related USRE33272E (en) 1983-03-31 1984-03-28 Filter cartridge for filtering apparatuses

Family Applications Before (1)

Application Number Title Priority Date Filing Date
US06/678,282 Ceased US4619676A (en) 1983-03-31 1984-03-28 Filter cartridge for filtering apparatuses

Country Status (4)

Country Link
US (2) US4619676A (fr)
EP (1) EP0138923B1 (fr)
DE (2) DE3311863A1 (fr)
WO (1) WO1984003842A1 (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6734122B1 (en) 2001-11-16 2004-05-11 Bgf Industries, Inc. Fabric for high-temperature gaseous filtration applications
US6740137B2 (en) * 2002-06-14 2004-05-25 3M Innovative Properties Company Collapsible pleated filter element
US20060078847A1 (en) * 2000-09-29 2006-04-13 Kwan Norman H Dental implant system and additional methods of attachment

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4795481A (en) * 1988-03-25 1989-01-03 Cambridge Filter Corporation Air filter with high dust-holding capacity
DK65889A (da) * 1988-04-02 1989-10-03 Mueller S F & Partner Filteranlaeg
DE4206738A1 (de) * 1992-03-04 1993-09-09 Minnesota Mining & Mfg Filterelement zum filtern von fluiden, insbesondere zum filtern von luft
US5454945A (en) * 1992-08-31 1995-10-03 Porous Media Corporation Conical coalescing filter and assembly
US5591329A (en) * 1995-05-31 1997-01-07 H-Tech, Inc. Fluid filter with pleated septum
US5871641A (en) * 1996-05-30 1999-02-16 H-Tech, Inc. Fluid filter with pleated septum
SE527578C2 (sv) * 2004-05-26 2006-04-11 Absolent Ab Filterkassett bestående av ett hölje omgivande en veckad filtermatta med distansorgan mellan parallella motstående filtermattdelar
JP6010360B2 (ja) * 2012-06-25 2016-10-19 日本無機株式会社 エアフィルタユニット

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410371A (en) * 1943-02-08 1946-10-29 Vokes Cecil Gordon Filter
US3199275A (en) * 1962-02-27 1965-08-10 Studley Paper Company Inc Conical filter
US3410062A (en) * 1966-09-12 1968-11-12 Cambridge Filter Corp Filter
JPS577221A (en) * 1980-06-13 1982-01-14 Nippon Muki Kk Apparatus for continuously preparing separator for air filter
EP0067115A1 (fr) * 1981-03-16 1982-12-15 DELBAG-LUFTFILTER GmbH Système filtrant d'air compact et universel de grande surface construit selon le système de montage modulaire
US4560477A (en) * 1982-11-22 1985-12-24 501 P.M. Filter Konstruktionen Separator for filter cartridges

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2720937A (en) * 1952-03-22 1955-10-18 Cambridge Filter Corp Filter construction
JPS5624013A (en) * 1979-05-04 1981-03-07 Nitta Kk Structure of air filter element

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2410371A (en) * 1943-02-08 1946-10-29 Vokes Cecil Gordon Filter
US3199275A (en) * 1962-02-27 1965-08-10 Studley Paper Company Inc Conical filter
US3410062A (en) * 1966-09-12 1968-11-12 Cambridge Filter Corp Filter
JPS577221A (en) * 1980-06-13 1982-01-14 Nippon Muki Kk Apparatus for continuously preparing separator for air filter
EP0067115A1 (fr) * 1981-03-16 1982-12-15 DELBAG-LUFTFILTER GmbH Système filtrant d'air compact et universel de grande surface construit selon le système de montage modulaire
US4560477A (en) * 1982-11-22 1985-12-24 501 P.M. Filter Konstruktionen Separator for filter cartridges

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060078847A1 (en) * 2000-09-29 2006-04-13 Kwan Norman H Dental implant system and additional methods of attachment
US6734122B1 (en) 2001-11-16 2004-05-11 Bgf Industries, Inc. Fabric for high-temperature gaseous filtration applications
US6740137B2 (en) * 2002-06-14 2004-05-25 3M Innovative Properties Company Collapsible pleated filter element

Also Published As

Publication number Publication date
EP0138923B1 (fr) 1987-07-29
DE3465024D1 (en) 1987-09-03
US4619676A (en) 1986-10-28
DE3311863A1 (de) 1984-10-04
EP0138923A1 (fr) 1985-05-02
WO1984003842A1 (fr) 1984-10-11

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