EP0374347A1 - Doppelfiltereinlage für ein elektrostatisches Luftreinigungsgerät - Google Patents

Doppelfiltereinlage für ein elektrostatisches Luftreinigungsgerät Download PDF

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Publication number
EP0374347A1
EP0374347A1 EP89104200A EP89104200A EP0374347A1 EP 0374347 A1 EP0374347 A1 EP 0374347A1 EP 89104200 A EP89104200 A EP 89104200A EP 89104200 A EP89104200 A EP 89104200A EP 0374347 A1 EP0374347 A1 EP 0374347A1
Authority
EP
European Patent Office
Prior art keywords
filter
cleaning device
air cleaning
filter insert
electrostatic
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Withdrawn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
EP89104200A
Other languages
German (de)
English (en)
French (fr)
Inventor
Fernand Scherrer
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.)
Periso SA
Original Assignee
Periso SA
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 Periso SA filed Critical Periso SA
Publication of EP0374347A1 publication Critical patent/EP0374347A1/de
Withdrawn legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/02—Plant or installations having external electricity supply
    • B03C3/04—Plant or installations having external electricity supply dry type
    • B03C3/14—Plant or installations having external electricity supply dry type characterised by the additional use of mechanical effects, e.g. gravity
    • B03C3/155—Filtration
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
    • B03C3/00—Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
    • B03C3/28—Plant or installations without electricity supply, e.g. using electrets

Definitions

  • the invention relates to a double filter insert for an air cleaning device with ionizer, consisting of a flat pre-filter made of polyester for retaining coarse dirt particles and a flat, electrostatic filter made of fleece for removing even fine-grained floating particles from the air circulated in the air cleaning device.
  • Two-layer filter comprising a filter fabric made of polyester facing the inflow of polluted air as the upper part.
  • the outer layer and an electrostatic filter fabric made of nonwoven fabric loosely arranged underneath or behind it as the lower or inner layer have already been used in a known air purifier from the applicant equipped with an ionizer.
  • this has the disadvantage that the respective degree of contamination of the electrostatic filter covered by the prefilter and thus any decrease in its effectiveness is inaccessible to a visual inspection.
  • the double filter insert together with its cover for free remove from the air cleaner In addition to the inconvenience caused by the work required for this, this circumstance also meant an undesirable, frequent strain on the plastic holders of the cover.
  • the object of the invention was to ensure that the state of the electrostatic filter can be checked quickly without removing the filter insert and cover from the air cleaner.
  • Such a nature of the double filter insert enables a quick check of its operational capability at any time without having to be dismantled.
  • a prefilter 1.1 forming the upper layer thereof is visible, in the center of which a circular control opening 1.3 is provided to make visible the degree of contamination of an electrostatic filter 1.2 arranged underneath. While the fabric of the pre-filter 1.1 consists of polyester of dark color, the electrostatic filter 1.2 lying in the lower layer and visible through the control opening is made of a white non-woven material. As long as there is a strong color contrast between the two filters 1.1, 1.2, the electrostatic filter 1.2 remains effective.
  • control opening 1.3 could also be provided at another point in the prefilter 1.1 and also a different location have stalt. It would also be conceivable to use several control openings.
  • the diameter of the circular control opening 1.3 can expediently be chosen to be 50 mm, as in the embodiment illustrated in FIG. 1.
  • the two filters 1.1, 1.2 which are stacked on top of one another, are rectangular and have the same surface, so that the upper prefilter 1.1 covers the electrostatic filter 1.2 exactly. They are welded together along their side edges.
  • the double filter insert 1 is placed on the inner surface of a plastic grill with the air cleaning device 2, with the prefilter 1.1 facing outwards.
  • the control opening 1.3 of the latter comes to lie approximately below the rear half of the top surface of the grill 2.1.
  • brackets 2.2 also made of plastic are also visible at the lower edge of the two side surfaces of the grill 2.1.

Landscapes

  • Electrostatic Separation (AREA)
  • Filtering Of Dispersed Particles In Gases (AREA)
  • Filtering Materials (AREA)
EP89104200A 1988-10-25 1989-03-09 Doppelfiltereinlage für ein elektrostatisches Luftreinigungsgerät Withdrawn EP0374347A1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CH3960/88A CH676087A5 (enrdf_load_stackoverflow) 1988-10-25 1988-10-25
CH3960/88 1988-10-25

Publications (1)

Publication Number Publication Date
EP0374347A1 true EP0374347A1 (de) 1990-06-27

Family

ID=4267163

Family Applications (1)

Application Number Title Priority Date Filing Date
EP89104200A Withdrawn EP0374347A1 (de) 1988-10-25 1989-03-09 Doppelfiltereinlage für ein elektrostatisches Luftreinigungsgerät

Country Status (5)

Country Link
US (1) US4880448A (enrdf_load_stackoverflow)
EP (1) EP0374347A1 (enrdf_load_stackoverflow)
CH (1) CH676087A5 (enrdf_load_stackoverflow)
DK (1) DK233889A (enrdf_load_stackoverflow)
NO (1) NO891212L (enrdf_load_stackoverflow)

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB9006146D0 (en) * 1990-03-19 1990-05-16 Wheway Plc Filter
US5540756A (en) * 1990-03-19 1996-07-30 Hoppitt; Bernard Electrostatic filter and method of filtering dust
US5306321A (en) * 1992-07-07 1994-04-26 Donaldson Company, Inc. Layered air filter medium having improved efficiency and pleatability
US5427597A (en) * 1992-07-07 1995-06-27 Donaldson Company, Inc. Layered air filter medium having improved efficiency and pleatability
GB2269668A (en) * 1992-08-14 1994-02-16 British Tech Group Passive dust sampler
US5980616A (en) * 1993-02-16 1999-11-09 Donaldson Company, Inc. Filter media for preventing carbon migration
US5874373A (en) * 1997-03-14 1999-02-23 American Felt & Filter Company Enhanced electret needled filtration media and composites
US5876487A (en) * 1997-03-17 1999-03-02 Donaldson Company, Inc. Adsorbent construction; and, method
US6143058A (en) * 1997-03-17 2000-11-07 Donaldson Company, Inc. Adsorbent construction and method
US5906677A (en) * 1997-05-05 1999-05-25 Dudley; Jesse R. Electrostatic supercharger screen
US6110260A (en) * 1998-07-14 2000-08-29 3M Innovative Properties Company Filter having a change indicator
US6168651B1 (en) * 1998-10-08 2001-01-02 Donaldson Company, Inc. Filter assembly with shaped adsorbent article; and devices and methods of use
US6146446A (en) * 1998-10-08 2000-11-14 Donaldson Company, Inc. Filter assembly with shaped adsorbent article; and devices and methods of use
US6875249B2 (en) * 2002-10-08 2005-04-05 Donaldson Company, Inc. Motor vehicle filter structure having visual indicator of useful life
US8409337B1 (en) 2010-06-08 2013-04-02 Aaf-Mcquay Inc. Air handling filtration equipment with adjustable media bed and method of use
KR101976325B1 (ko) * 2018-07-06 2019-05-07 주식회사 케이티앤지 연기 성분 저감 담배 필터, 담배, 그리고 그 제조 방법
US20220001393A1 (en) * 2018-11-19 2022-01-06 Clair Inc. Electrostatic induction-type air filtration dust collecting apparatus and method

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724457A (en) * 1953-12-22 1955-11-22 Charles S Besser Electrostatic air filter
US4376642A (en) * 1980-08-18 1983-03-15 Biotech Electronics Ltd. Portable air cleaner unit

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB900450A (en) * 1960-04-26 1962-07-04 Purolator Products Inc Gas filter element
JPS61283320A (ja) * 1985-05-01 1986-12-13 Nippon Denso Co Ltd 空気清浄器用濾材

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2724457A (en) * 1953-12-22 1955-11-22 Charles S Besser Electrostatic air filter
US4376642A (en) * 1980-08-18 1983-03-15 Biotech Electronics Ltd. Portable air cleaner unit

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, Band 9, Nr. 96 (C-278)[1819], 25. April 1985; & JP-A-59 225 757 (SANYO DENKI K.K.) 18-12-1984 *

Also Published As

Publication number Publication date
NO891212L (no) 1990-04-26
US4880448A (en) 1989-11-14
DK233889D0 (da) 1989-05-12
CH676087A5 (enrdf_load_stackoverflow) 1990-12-14
DK233889A (da) 1990-04-26
NO891212D0 (no) 1989-03-20

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