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1. WO2020065648 - A METHOD OF AIR DISINFECTION AND AN AIR DISINFECTION APPARATUS COMPRISING AN UNIPOLAR CORONA DISCHARGE ZONE AND AN ELECTRICAL FIELD

Publication Number WO/2020/065648
Publication Date 02.04.2020
International Application No. PCT/IL2019/051058
International Filing Date 25.09.2019
Chapter 2 Demand Filed 01.03.2020
IPC
B01D 53/32 2006.01
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases or aerosols
32by electrical effects other than those provided for in group B01D61/89
H01T 19/04 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
19Devices providing for corona discharge
04having pointed electrodes
H01T 23/00 2006.01
HELECTRICITY
01BASIC ELECTRIC ELEMENTS
TSPARK GAPS; OVERVOLTAGE ARRESTERS USING SPARK GAPS; SPARKING PLUGS; CORONA DEVICES; GENERATING IONS TO BE INTRODUCED INTO NON-ENCLOSED GASES
23Apparatus for generating ions to be introduced into non-enclosed gases, e.g. into the atmosphere
A61L 9/22 2006.01
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
9Disinfection, sterilisation or deodorisation of air
16using physical phenomena
22Ionisation
F24F 3/16 2006.01
FMECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
24HEATING; RANGES; VENTILATING
FAIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
3Air-conditioning systems in which conditioned primary air is supplied from one or more central stations to distributing units in the rooms or spaces where it may receive secondary treatment; Apparatus specially designed for such systems
12characterised by the treatment of the air otherwise than by heating and cooling
16by purification, e.g. by filtering; by sterilisation; by ozonisation
CPC
A61L 2209/211
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
2209Aspects relating to disinfection, sterilisation or deodorisation of air
20Method-related aspects
21Use of chemical compounds for treating air or the like
211Use of hydrogen peroxide, liquid and vaporous
A61L 9/22
AHUMAN NECESSITIES
61MEDICAL OR VETERINARY SCIENCE; HYGIENE
LMETHODS 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
9Disinfection, sterilisation or deodorisation of air
16using physical phenomena
22Ionisation
B01D 2257/91
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2257Components to be removed
91Bacteria; Microorganisms
B01D 2258/06
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2258Sources of waste gases
06Polluted air
B01D 2259/818
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
2259Type of treatment
80Employing electric, magnetic, electromagnetic or wave energy, or particle radiation
818Employing electrical discharges or the generation of a plasma
B01D 53/32
BPERFORMING OPERATIONS; TRANSPORTING
01PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
DSEPARATION
53Separation of gases or vapours; Recovering vapours of volatile solvents from gases; Chemical or biological purification of waste gases, e.g. engine exhaust gases, smoke, fumes, flue gases, aerosols,
32by electrical effects other than those provided for in group B01D61/00
Applicants
  • TADIRAN CONSUMER AND TECHNOLOGY PRODUCTS LTD. [IL]/[IL]
Inventors
  • RISKIN, Yefim
Agents
  • TOPPER, Jonathan
Priority Data
26202227.09.2018IL
Publication Language English (EN)
Filing Language English (EN)
Designated States
Title
(EN) A METHOD OF AIR DISINFECTION AND AN AIR DISINFECTION APPARATUS COMPRISING AN UNIPOLAR CORONA DISCHARGE ZONE AND AN ELECTRICAL FIELD
(FR) PROCÉDÉ DE DÉSINFECTION DE L'AIR ET APPAREIL DE DÉSINFECTION DE L'AIR COMPRENANT UNE ZONE DE DÉCHARGE CORONA UNIPOLAIRE ET UN CHAMP ÉLECTRIQUE
Abstract
(EN)
In a method and apparatus (10) for air disinfection a unipolar corona discharge zone (26) is formed between an ionizing portion (15) of a first electrode (14) and a non- ionizing second electrode (18) by applying high DC voltage (22', 22") across the first and second electrodes and water molecules in an air flow (25) conveyed through the corona discharge zone are converted to hydrogen peroxide molecules. An electric field (27, 27', 27") is generated across the air flow close to the corona discharge zone for preventing ions escaping from the corona discharge zone into the atmosphere. This allows a higher corona discharge current to be applied than would be permitted if ions were able to escape into the atmosphere, which results in a higher yield of hydrogen peroxide and increases the efficiency of disinfection. It also helps to prevent dust from settling on the ionizing portion (15).
(FR)
Dans un procédé et un appareil (10) de désinfection de l'air, une zone de décharge corona unipolaire (26) est formée entre une partie ionisante (15) d'une première électrode (14) et d'une seconde électrode non ionisante (18) en appliquant une tension continue élevée (22', 22") à travers les première et seconde électrodes et les molécules d'eau dans un flux d'air (25) transporté à travers la zone de décharge corona sont converties en molécules de peroxyde d'hydrogène. Un champ électrique (27, 27', 27") est généré à travers le flux d'air à proximité de la zone de décharge corona pour empêcher les ions de s'échapper de la zone de décharge corona dans l'atmosphère. Ceci permet d'appliquer un courant de décharge corona supérieur à celui qui serait autorisé si des ions pouvaient s'échapper dans l'atmosphère, ce qui conduit à un rendement plus élevé de peroxyde d'hydrogène et augmente l'efficacité de désinfection. Il aide également à empêcher la poussière de se déposer sur la partie ionisante (15).
Latest bibliographic data on file with the International Bureau