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1. WO1994003276 - ELECTROSTATIC FILTER

Publication Number WO/1994/003276
Publication Date 17.02.1994
International Application No. PCT/IE1993/000042
International Filing Date 30.07.1993
Chapter 2 Demand Filed 25.02.1994
IPC
B01D 39/08 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
08Filter cloth, i.e. woven, knitted or interlaced material
B01D 39/16 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material
16of organic material, e.g. synthetic fibres
B03C 3/155 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
3Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
02Plant or installations having external electricity supply
04dry type
14characterised by the additional use of mechanical effects, e.g. gravity
155Filtration
B03C 3/28 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
3Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
28Plant or installations without electricity supply, e.g. using electrets
B03C 3/30 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
3Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
28Plant or installations without electricity supply, e.g. using electrets
30in which electrostatic charge is generated by passage of the gases, i.e. tribo-electricity
CPC
B01D 2239/0442
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
04Additives and treatments of the filtering material
0442Antimicrobial, antibacterial, antifungal additives
B01D 2239/0464
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
04Additives and treatments of the filtering material
0464Impregnants
B01D 2239/065
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2239Aspects relating to filtering material for liquid or gaseous fluids
06Filter cloth, e.g. knitted, woven non-woven; self-supported material
065More than one layer present in the filtering material
B01D 39/083
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
08Filter cloth, i.e. woven, knitted or interlaced material
083of organic material
B01D 39/1676
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
39Filtering material for liquid or gaseous fluids
14Other self-supporting filtering material ; ; Other filtering material
16of organic material, e.g. synthetic fibres
1669Cellular material
1676of synthetic origin
B03C 3/155
BPERFORMING OPERATIONS; TRANSPORTING
03SEPARATION 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
CMAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
3Separating dispersed particles from gases or vapour, e.g. air, by electrostatic effect
02Plant or installations having external electricity supply
04dry type
14characterised by the additional use of mechanical effects, e.g. gravity
155Filtration
Applicants
  • E.V.E. HOLDINGS LIMITED [IE]/[IE] (AllExceptUS)
  • FORDE, George [IE]/[IE] (UsOnly)
Inventors
  • FORDE, George
Agents
  • MACLACHLAN & DONALDSON
Priority Data
92250330.07.1992IE
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) ELECTROSTATIC FILTER
(FR) FILTRE ELECTROSTATIQUE
Abstract
(EN)
An air filter comprises a first (21) and second (22) layer of woven electrostatic material (100). The woven electrostatic material (100) comprises a warp (120) of positively or negatively chargeable material and a weft (110) of oppositely chargeable material. The material (100) has the combined electrostatic characteristics of both positively and negatively charged material. The layers of material are separated in a filter by an air permeable material (22) comprising a block of woven polypropylene, open-cell polyurethane or polyester. The woven material (100) and/or the air permeable material (22) is impregnated with a microbiological growth control agent. The filter is reversible and may be placed in a bidirectional air flow.
(FR)
Un filtre à air comprend une première (21) et une seconde (22) couche de matériau électrostatique tissé (100). Le matériau électrostatique tissé (100) comprend une chaîne (120) en un matériau pouvant être chargé positivement ou négativement et une trame (110) en un matériau pouvant être chargé de façon opposée. Le matériau (100) possède les caractéristiques électrostatiques combinées d'un matériau chargé à la fois positivement et négativement. Les couches de matériau sont séparées dans un filtre par un matériau perméable à l'air (22) comprenant un bloc de polypropylène tissé, de polyuréthane ou de polyester à alvéoles ouverts. Le matériau tissé (100) et/ou le matériau perméable à l'air (22) sont imprégnés avec un agent empêchant la croissance microbiologique. Le filtre présenté est réversible et peut être placé dans un écoulement d'air bidirectionnel.
Also published as
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