WO2006009341A1 - Filtre epurateur d'air - Google Patents

Filtre epurateur d'air Download PDF

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Publication number
WO2006009341A1
WO2006009341A1 PCT/KR2004/003271 KR2004003271W WO2006009341A1 WO 2006009341 A1 WO2006009341 A1 WO 2006009341A1 KR 2004003271 W KR2004003271 W KR 2004003271W WO 2006009341 A1 WO2006009341 A1 WO 2006009341A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
silver
enzyme
air cleaning
cleaning filter
Prior art date
Application number
PCT/KR2004/003271
Other languages
English (en)
Inventor
Seong Hwan Lee
Sung Hwa Lee
Ok Chun Hyun
Young Ki Hong
Myung Suk Lee
Chul Sang Jung
Jong Soon Kim
Original Assignee
Lg Electronics Inc.
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 Lg Electronics Inc. filed Critical Lg Electronics Inc.
Publication of WO2006009341A1 publication Critical patent/WO2006009341A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L9/00—Disinfection, sterilisation or deodorisation of air
    • A61L9/16—Disinfection, sterilisation or deodorisation of air using physical phenomena
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/02—Loose filtering material, e.g. loose fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/16—Other self-supporting filtering material ; Other filtering material of organic material, e.g. synthetic fibres
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
    • B01D—SEPARATION
    • B01D39/00—Filtering material for liquid or gaseous fluids
    • B01D39/14—Other self-supporting filtering material ; Other filtering material
    • B01D39/20—Other self-supporting filtering material ; Other filtering material of inorganic material, e.g. asbestos paper, metallic filtering material of non-woven wires
    • B01D39/2027—Metallic 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
    • B01D46/0027—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions
    • B01D46/0028—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours with additional separating or treating functions provided with antibacterial or antifungal means
    • 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
    • B01D46/24—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies
    • B01D46/2403—Particle separators, e.g. dust precipitators, using rigid hollow filter bodies characterised by the physical shape or structure of the filtering element
    • B01D46/2418—Honeycomb filters
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61L—METHODS OR APPARATUS FOR STERILISING MATERIALS OR OBJECTS IN GENERAL; DISINFECTION, STERILISATION OR DEODORISATION OF AIR; CHEMICAL ASPECTS OF BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES; MATERIALS FOR BANDAGES, DRESSINGS, ABSORBENT PADS OR SURGICAL ARTICLES
    • A61L2209/00—Aspects relating to disinfection, sterilisation or deodorisation of air
    • A61L2209/10—Apparatus features
    • A61L2209/14—Filtering means
    • 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
    • B01D2239/0407—Additives and treatments of the filtering material comprising particulate additives, e.g. adsorbents

Definitions

  • the present invention relates to an air cleaning filter, and more particularly, to an air cleaning filter for removing microorganisms floating in the air and a manufacturing method thereof, in which silver and enzyme are coated on a carrier for the air cleaning filter.
  • an indoor air cleaner With the increasing interest in the environment, an indoor air cleaner has been demanded. Accordingly, various air cleaners for removing foreign substances have been developed. Such air cleaners use an air cleaning filter.
  • the air cleaning filter has various shapes and features according to kind, size and characteristic of the object that needs to be removed and therefore various filters have been developed. Specifically, for a satisfactory air cleaning effect, such an air cleaning filter must have an antimicrobial property so as to sufficiently remove microorganisms, such as a bacteria, a microbe and a fungus, which are floating in the air.
  • An object of the present invention devised to solve the problem lies on an air cleaning filter, which can sterilize and germicide microorganism floating in the air.
  • Another object of the present invention devised to solve the problem lies on a method for manufacturing an air cleaning filter, which can sterilize and germicide microorganism floating in the air.
  • the object of the present invention can be achieved by providing an air cleaning filter having a carrier coated with a silver and an enzyme.
  • a method for manufacturing the air cleaning filter including the steps of: coating a silver on a carrier; and fixing an enzyme on the carrier by processing the enzyme on the carrier coated with the silver.
  • the method includes the step of immersing the carrier in a mixed solution of the silver and the enzyme or spraying the mixed solution onto the carrier.
  • the carrier includes a glass fiber, an ion exchange fiber, a cellulose fiber or an asbestos fiber, various kinds of organic fiber, various kinds of inorganic fiber, and so on.
  • a metal such as zinc, copper and aluminum, or a plastic can be used.
  • theses carriers can be variously modified depending on characteristics of the materials.
  • the carrier can be a honeycomb type, a particle type, a net type, a filter paper type, a cotton type, a mesh type, a plate type or a foam type.
  • any kind of silver can be used if only it has a germicidal power.
  • a nano silver or a colloidal silver can be used.
  • the silver is activated so sufficient that it can be coated on the carrier.
  • the nano silver represents a nano-sized silver particle.
  • a dispersion solution of a nano-sized composite material can be used according to a method disclosed in Korean Patent Application Laid-Open Publication No. 2004-0018227.
  • the dispersion solution of nano-sized composite materials is prepared by the steps of: preparing a basic colloidal silica solution; preparing an electrolysis apparatus by putting a negative electrode containing aluminum and ⁇ a positive electrode containing silver in the silica colloidal solution; and forming a nano- sized composite material by applying voltage to each electrode.
  • the silver used in the present invention destructs a cell membrane of bacteria and converts an oxygen into an activated oxygen, thereby providing a strong antibacterial function.
  • any enzyme can be used if only it has a property of bacteriolytic property.
  • the enzyme may be one selected from the group consisting of lysozyme, chitinase, protease, glucose oxidase, glucanase, ⁇ -galactosidase, endo- ⁇ -N- acetylglucosamunidase, endolysin, and combinations thereof.
  • concentration of the enzyme There is no special limit in the concentration of the enzyme. That is, the concentration of the enzyme can be properly adjusted depending on the characteristic of target bacteria and the required degree of the pollution.
  • the lysozyme is an enzyme that acts on a peptidoglycan of cell membrane and hydrolyzes ⁇ -l,4-muramide bond between N-acetyl muramic acid and
  • the lysozyme has an excellent sterilization function together with the silver.
  • the air cleaning filter coated with the silver and the enzyme can be manufactured by coating the silver on the carrier and fixing the enzyme on the carrier.
  • the air cleaning filter coated with the silver and the enzyme can be manufactured by immersing the carrier in a mixed solution of the silver and the enzyme or spraying the mixed solution onto the carrier.
  • the air cleaning filter coated with the silver and the enzyme can be manufactured by sequentially coating the carrier with the silver and the enzyme, or immersing the carrier in the mixed solution of the silver and the enzyme and then spraying the solution onto the carrier.
  • the step of coating the carrier with the silver is performed by the general methods and a suitable method can be selected depending on the property of the carrier.
  • the step of fixing the enzyme on the carrier coated with the silver can be performed by a general method, without any special limit.
  • Chemical and physical methods can be used to fix the silver on the carrier.
  • the nano silver can be coated on the carrier by a spray method and the enzyme can be coated on the carrier by spraying an activated enzyme thereon.
  • a known technology such as an air spray can be used as the spraying method
  • the present invention is not limited to it. That is, any method can be used only if it evenly coats the silver and the enzyme on the carrier.
  • an immersion method can be used.
  • the air cleaning filter coated with the silver and the enzyme can be manufactured by activating the enzyme with EDTA or glycine and then adding the nano silver.
  • the present invention is not limited to it. That is, the silver and the enzyme can be coated by a general method, without any special limit.
  • the silver and the enzyme can be coated on the carrier by spraying the mixed solution of the silver and the enzyme.
  • the carrier may be cleansed with a proper cleaning water before coating the carrier with the silver and the enzyme or the cleaned carrier may be dried by a heat treatment.
  • a metal carrier it is preferable to remove an oil component attached to a surface of the carrier during the manufacturing process or storage.
  • a drying time and a drying temperature can be properly adjusted depending on a shape, kind and size of the carrier.
  • a drying step can be performed after coating the carrier with the silver and the enzyme. In case where the
  • the germicide function of the air cleaning filter coated with the mixed solution of the silver and the enzyme is shown in FIG. 3.
  • the vitamin C emitting filter according to the present invention is cut with a desired size and used as a filter for the air cleaner.
  • the filter according to the present invention can be used singly in the same product and can be used together with the air cleaner filter and the deodorizer filter.
  • the vitamin C emitting filter according to the present invention can be widely used in the home or business air cleaners, vehicles, refrigerators, humidifiers, air conditioners, and other home appliances.
  • the mounting position and shape of the filter can be appropriately adjusted depending on the products.
  • FIG. 1 is a schematic view of a chamber for evaluating a microorganism cleaning performance of an air cleaning filter according to an embodiment of the present invention
  • FIG 2 is a plan view of the chamber shown in FIG. 1;
  • FIG. 3 is a TEM image illustrating a process of sterilizing E.coli collected in an air cleaning filter according to an embodiment of the present invention
  • FIG. 4 is an image of living bacteria when an air cleaning filter is process with E.coil
  • FIG. 5 is an image of living bacteria when an air cleaning filter is processed with staphylococcus aureis
  • FIG. 6 is an image of living bacteria when an air cleaning filter is processed with pseudomonas
  • FIG. 7 is an image of living bacteria when an air cleaning filter is processed with mold.
  • An aluminum mesh manufactured by Airfill company is immersed in 2.5% NaOH solution for three minutes, so that an oil component is removed from the aluminum mesh.
  • the aluminum mesh is cleaned using 2.5% NaOH solution. The above processes are repeated seven times. A heat treatment is performed on the cleaned aluminum mesh
  • Nano silver is coated on the heat-treated aluminum mesh by using a spray method. Then, a lysozyme manufactured by Sigma company is added to 100 mM EDTA solution, thereby preparing 1000 ppm lysozyme solution. The aluminum mesh coated with the silver is immersed in the lysozyme solution and agitated at a room temperature for six hours, such that the lysozyme is coated on the aluminum mesh. Consequently, the aluminum mesh coated with the nano silver and the lysozyme is obtained. [Embodiment 2]
  • a NaH 2 PO 4 hydrate and a pure water are mixed in a ratio of 1 :32 and a Na 2 HPO 4 hydrate and a pure water are mixed in a ratio of 1:18.6.
  • 100 mM EDTA solution is obtained by adding
  • a lysozyme solution whose final concentration is 10000 ppm is manufactured by adding lysozyme to the 100 mM EDTA solution, hi addition, silver coating solution whose final concentration is 1000 ppm is manufactured by adding acryl emulsion, propylene glycol and polysiloxane to a colloidal nano silver. Then, 1000 ppm solution is manufactured by adding the lysozyme solution to the silver coating solution, and the resulting solution is agitated 100-200 rpm at a room temperature for six hours, thereby manufacturing a silver/enzyme coating solution.
  • the silver/enzyme coating solution is sprayed on the aluminum mesh, which is cleaned and heat-treated in the method of the first embodiment, thereby coating the silver and the enzyme on the aluminum mesh. Then, the aluminum
  • the silver and the enzyme according to the present invention is obtained.
  • the aluminum meshes coated with the silver and the lysozyme according to the first and second embodiments of the present invention are placed in a chamber for evaluating a microorganism cleaning performance, as shown in FIG 1.
  • the chamber has a volume of 1000 cm 3 .
  • An aerosol generator is connected to a bacteria dispenser, model 256 of Royco Instrument Incorporation, and E.coli is dispersed from the bacteria dispenser.
  • the chamber is polluted with 100000 CFU/ml E.coli and air is circulated using a fan disposed in the chamber.
  • the air cleaning filter having a carrier coated with silver and enzyme improves the germicidal effect much more than the air cleaning filter having no silver and enzyme coated.
  • FIGs. 4 to 7 represent a living bacteria just after inoculation
  • (b) represents a living bacteria after twenty- four hours in the aluminum mesh where the silver and the enzyme are not processed
  • (c) represents a living bacteria after twenty-four hours after inoculation.
  • the average number of the living bacteria was 240,000 in FIG. 4(a), 210,000 in FIG.
  • the average number of the living bacteria was 210,000 in FIG 5(a), 5,000 in FIG. 5(b), and less than 10 in FIG. 5(c), respectively.
  • the average number of the living bacteria was 130,000 in FIG. 6(a), 130,000 in FIG. 6(b), and 180 in FIG. 6(c), respectively.
  • the average number of the living bacteria was 120,000 in FIG. 7(a), 4,900 in FIG. 7(b), and less than 10 in FIG. 7(c), respectively.
  • the air cleaning filter showed the antibacterial property with respect to four kinds of the bacteria. It can be again confirmed that the air cleaning filter coated with the silver and the enzyme according to the present invention has the antibacterial performance with respect to the microorganism.
  • the air cleaning filter is coated with the silver having germicidal function and the enzyme having bacteriolytic function and therefore the sterilization effect for the microorganism can be remarkably improved by maximizing the germicidal ability of the silver and the enzyme.
  • the air cleaning filter coated with the silver and the enzyme can hydrolyze cell wall of the microorganism, such as a bacteria, a microbe or a fungus, and destruct cell membrane of the microorganism. Also, the air cleaning filter can convert oxygen into active oxygen and thus effectively sterilize the microorganism floating in the air.

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  • Chemical Kinetics & Catalysis (AREA)
  • Chemical & Material Sciences (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Health & Medical Sciences (AREA)
  • Geology (AREA)
  • Geometry (AREA)
  • Physics & Mathematics (AREA)
  • Epidemiology (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Filtering Materials (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)

Abstract

La présente invention concerne un filtre épurateur d'air et un procédé de fabrication de ce dernier. Le filtre épurateur d'air est revêtu à l'aide d'argent et d'une enzyme. Le procédé de fabrication du filtre épurateur d'air comprend l'étape de fixation de l'enzyme sur le support par traitement de l'enzyme sur le support revêtu sur l'argent, ou comprend l'étape d'immersion du support dans une solution mélangée d'argent et d'enzyme ou de pulvérisation de la solution mélangée d'argent et d'enzyme sur le support. Ainsi, le filtre épurateur d'air revêtu à l'aide d'argent et d'enzyme peut directement hydrolyser la paroi cellulaire du micro-organisme, tel qu'une bactérie, un microbe ou un champignon et détruire la membrane cellulaire du micro-organisme. Le filtre épurateur d'air peut également convertir l'oxygène en oxygène actif et ainsi stériliser efficacement le micro-organisme en suspension dans l'air.
PCT/KR2004/003271 2004-07-21 2004-12-13 Filtre epurateur d'air WO2006009341A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
KR1020040056799A KR100606980B1 (ko) 2004-07-21 2004-07-21 공기 정화 필터
KR10-2004-0056799 2004-07-21

Publications (1)

Publication Number Publication Date
WO2006009341A1 true WO2006009341A1 (fr) 2006-01-26

Family

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Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/KR2004/003271 WO2006009341A1 (fr) 2004-07-21 2004-12-13 Filtre epurateur d'air

Country Status (2)

Country Link
KR (1) KR100606980B1 (fr)
WO (1) WO2006009341A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010030058A1 (fr) * 2008-09-10 2010-03-18 Lg Electronics Inc. Filtre pour épurer l'air comprenant une enzyme protéolytique et son procédé de fabrication
US8672142B2 (en) 2007-07-12 2014-03-18 Nitto Denko Corporation Composite semipermeable membrane
EP2806964B1 (fr) * 2012-01-26 2019-08-07 AG+ ApS Procédé de production d'un élément de filtration
EP3984618A4 (fr) * 2020-09-03 2022-04-20 Nikki-Universal Co., Ltd. Milieu filtrant pour une purification d'air et procédé de production de celui-ci

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR100922566B1 (ko) * 2007-06-11 2009-10-21 웅진코웨이주식회사 공기 정화용 필터

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049795A (ja) * 1983-08-31 1985-03-19 Kanai Hiroyuki 殺菌性繊維シ−ト
JP2003106583A (ja) * 2001-09-29 2003-04-09 Nippon Muki Co Ltd 空気清浄装置
US6579352B1 (en) * 1996-07-25 2003-06-17 Nikki-Universal Co., Ltd. Air cleaning filter
US20040050254A1 (en) * 1996-07-25 2004-03-18 Atsuo Tanaka Air purifying filter using modified enzymes

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6049795A (ja) * 1983-08-31 1985-03-19 Kanai Hiroyuki 殺菌性繊維シ−ト
US6579352B1 (en) * 1996-07-25 2003-06-17 Nikki-Universal Co., Ltd. Air cleaning filter
US20040050254A1 (en) * 1996-07-25 2004-03-18 Atsuo Tanaka Air purifying filter using modified enzymes
JP2003106583A (ja) * 2001-09-29 2003-04-09 Nippon Muki Co Ltd 空気清浄装置

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8672142B2 (en) 2007-07-12 2014-03-18 Nitto Denko Corporation Composite semipermeable membrane
WO2010030058A1 (fr) * 2008-09-10 2010-03-18 Lg Electronics Inc. Filtre pour épurer l'air comprenant une enzyme protéolytique et son procédé de fabrication
EP2806964B1 (fr) * 2012-01-26 2019-08-07 AG+ ApS Procédé de production d'un élément de filtration
EP3984618A4 (fr) * 2020-09-03 2022-04-20 Nikki-Universal Co., Ltd. Milieu filtrant pour une purification d'air et procédé de production de celui-ci

Also Published As

Publication number Publication date
KR20060008508A (ko) 2006-01-27
KR100606980B1 (ko) 2006-08-01

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