WO2002004036A1 - Purification of air - Google Patents
Purification of air Download PDFInfo
- Publication number
- WO2002004036A1 WO2002004036A1 PCT/GB2001/003124 GB0103124W WO0204036A1 WO 2002004036 A1 WO2002004036 A1 WO 2002004036A1 GB 0103124 W GB0103124 W GB 0103124W WO 0204036 A1 WO0204036 A1 WO 0204036A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air
- section
- filter
- withdrawn
- enclosed space
- Prior art date
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60H—ARRANGEMENTS OF HEATING, COOLING, VENTILATING OR OTHER AIR-TREATING DEVICES SPECIALLY ADAPTED FOR PASSENGER OR GOODS SPACES OF VEHICLES
- B60H3/00—Other air-treating devices
-
- 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
-
- 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
- A61L9/18—Radiation
- A61L9/20—Ultra-violet radiation
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F24—HEATING; RANGES; VENTILATING
- F24F—AIR-CONDITIONING; AIR-HUMIDIFICATION; VENTILATION; USE OF AIR CURRENTS FOR SCREENING
- F24F8/00—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying
- F24F8/20—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation
- F24F8/22—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using UV light
Definitions
- the present invention relates to a method and apparatus for purifying air.
- the present invention proposes a recirculatory air system which includes within its ducting the provision of an ultraviolet radiation emission section which is arranged to purify the air in combination with an antimicrobial coating.
- the ultraviolet radiation emission section is arranged to be maintained in situ and is provided with one or more openable inspection panels provided with means which automatically terminate energisation of the ultraviolet light source upon opening the or each panel.
- Figure 1 shows a diagrammatic representation of an installation according to the present invention
- Figure 2 shows a diagrammatic side view of a portion of the installation shown in Figure 1;
- Figure 3 shows a diagrammatic representation of a control box used in the installation shown in Figure 1.
- FIG. 1 shows diagrammatically a recirculating air system for purifying air in an aircraft.
- the enclosed space 1 is provided with an air extraction vent 2 which permits air to be withdrawn from the enclosed space 1 under action of a fan system 3 via ducting 4.
- a fan system 3 Located at a suitable position along the length of the ducting 4 is an ultraviolet illumination section 5 which will be described in detail below.
- an air flow conditioning section 6 is also provided in the ducting 4 which is arranged to provide conventional mechanical filtering of the air flowing through the ducting 4. The thus cleaned air is returned to the enclosed space via an air inlet 8 and the operation of the fan system 3 and the ultraviolet illumination section 5 is monitored and/or controlled by a control unit 7.
- the section 6 can include one or more filter sections 6a and a pre-sterilisation section 6b.
- the filters used can be one or more of the conventional mechanical filters such as an activated charcoal filter as well as an electrostatic filter. It is important that the filters do not create a back pressure of any significance in the system and we have found a filter of 5 microns (G4/EU4 rating) to be sufficient.
- the pre-sterilisation section 6b includes an arrangement for creating slightly turbulent air flow through the ultraviolet illumination section 5. This can be achieved in a number of ways but we prefer to utilise a fixed multi bladed directional fan 9. Alternatively, the fan may be replaced by fixed shaped or planar members may be provided at an angle to the air flow in order to provide a sinous air flow path through the section 5.
- the fixed shaped or planar members may be perforated or made of a porous material.
- the ultraviolet illumination section 5 will now be described and is shown as being of circular cross section but it will be appreciated that any convenient cross section may be utilised which may or may not be the same cross section as used for the ducting 4.
- the section 5 has a cylindrical side wall 11 which encloses a central core 15 around which are mounted the individual light sources 10.
- the number and length of the sources 10 will depend on the air flow conditions but in the present embodiment we prefer to have eight light sources 10 uniformly disposed around the core 15 and the effect of this is to cause slightly turbulent air flow in the annular space between the core 15 and the cylindrical side wall 11.
- the light sources 10 are held in position such that they are spaced from the core 15 which maximises the effect of the ultraviolet light on the bacteria in the air as the air flow passes over substantially all the surface of the sources 10.
- the surfaces of the wall 11 and the central core 15 are either made of or coated with material with a high reflectance to UV light. We prefer to use polished aluminium sheet which has been found to be better than polished stainless steel.
- the side walls 11, can be provided with an operable panel to permit maintenance of the light sources 10 and permit other access to the illumination section 5.
- the individual light sources 10 are attached to the core 15 in any convenient manner and are most conveniently attached by means of simple clips. Additionally, the panel in the side wall 11 may be provided with detectors (not shown) which will detect the opening or potential opening of a panel and thus signal to the control unit 7 that the light sources 10 should be switched off. This avoids possible eye damage to maintenance personnel.
- control unit The exact way in which the potential opening of the panels is signalled to the control unit is a matter of design choice and could be a micro switch or other suitable sensor which could be activated by the operation of a latch or the like on the side wall which is required to be unlatched prior to the movement of the panel itself.
- Figure 3 shows a typical front panel 19 for the control unit 7 where an isolator switch 20 is shown.
- the control unit can be located at any convenient position but will usually be remote from the fan system 3 and illumination section 5.
- a key pad 21 can provide control of the illumination section 5 and also of fan speed to cater for different conditions and an LFI and hours run meter 22 is also provided which can be checked by maintenance personnel.
- the proposed method is to use the ultraviolet light within the illumination section 5 in such a manner as to provide an excess of a 99% sanitation rate overall. It is also proposed to recirculate the air at regular intervals in order to improve the sanitation rate.
- the agent is one which is non-leaching and nonvolatile and is not consumed by microorganisms.
- an antimicrobial agent is a standard antimicrobial substance (a quaternary amine) in a silane which when coated on a surface bonds to the surface to render it antimicrobially active.
- an agent incorporating 3-(trimethoxysilyl)-propyldimethyloctadecyl ammonium chloride as active ingredient as sold by Aegis Environments of Midland, Michigan, USA under the trade mark Aegis Microbe Shield is particularly useful.
- a metal "wool” as the .filter in the filter section 6a and this is usually of stainless steel or other non-corroding metal.
- filter materials such as natural or synthetic fibres or mixtures thereof could be used.
- the apparatus described above can be assembled from discrete parts or modules, it is preferred to construct the conditioning section 6 and the UV treatment section 5 as a unit so that the unit can be readily fitted into existing ducting.
Abstract
Description
Claims
Priority Applications (7)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU2001270793A AU2001270793A1 (en) | 2000-07-11 | 2001-07-11 | Purification of air |
DE60137053T DE60137053D1 (en) | 2000-07-11 | 2001-07-11 | AIR CLEANING |
EP01949674A EP1313517B1 (en) | 2000-07-11 | 2001-07-11 | Purification of air |
CA002417561A CA2417561C (en) | 2000-07-11 | 2001-07-11 | Purification of air |
JP2002508490A JP2004504869A (en) | 2000-07-11 | 2001-07-11 | Air cleaning method and apparatus |
NZ523901A NZ523901A (en) | 2000-07-11 | 2001-07-11 | Purification of air |
HK03105044.2A HK1052657A1 (en) | 2000-07-11 | 2003-07-11 | Purification of air |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
GB0017058.9 | 2000-07-11 | ||
GBGB0017058.9A GB0017058D0 (en) | 2000-07-11 | 2000-07-11 | Purification of air |
Related Child Applications (2)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US10/070,721 A-371-Of-International US20030039576A1 (en) | 2000-07-11 | 2001-07-11 | Purification of air |
US10/242,848 Continuation-In-Part US20030021721A1 (en) | 2002-07-16 | 2002-09-13 | Purification of air |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2002004036A1 true WO2002004036A1 (en) | 2002-01-17 |
Family
ID=9895473
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/GB2001/003124 WO2002004036A1 (en) | 2000-07-11 | 2001-07-11 | Purification of air |
Country Status (13)
Country | Link |
---|---|
US (1) | US20030039576A1 (en) |
EP (1) | EP1313517B1 (en) |
JP (1) | JP2004504869A (en) |
CN (1) | CN1185017C (en) |
AT (1) | ATE417634T1 (en) |
AU (1) | AU2001270793A1 (en) |
CA (1) | CA2417561C (en) |
DE (1) | DE60137053D1 (en) |
GB (1) | GB0017058D0 (en) |
HK (1) | HK1052657A1 (en) |
NZ (1) | NZ523901A (en) |
RU (1) | RU2280473C2 (en) |
WO (1) | WO2002004036A1 (en) |
Cited By (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002075232A1 (en) | 2001-03-21 | 2002-09-26 | Robert Charles Dwyer | Fluid to gas heat exchangers |
WO2004108174A1 (en) * | 2003-06-06 | 2004-12-16 | Dwje Limited | Aircraft air disinfection system |
EP1660211A2 (en) * | 2003-05-08 | 2006-05-31 | Eco-Rx, Inc. | System for purifying and removing contaminants from gaseous fluids |
US11406729B2 (en) | 2017-08-31 | 2022-08-09 | Aeroclean Technologies, Llc | Air treatment system and method |
US11779675B2 (en) | 2020-10-19 | 2023-10-10 | Molekule Group, Inc. | Air sterilization insert for heating, ventilation, and air conditioning (HVAC) systems |
US11850336B2 (en) | 2020-05-22 | 2023-12-26 | Molekule Group, Inc. | UV sterilization apparatus, system, and method for aircraft air systems |
Families Citing this family (18)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US20030230477A1 (en) * | 2002-06-14 | 2003-12-18 | Fink Ronald G. | Environmental air sterilization system |
US6784440B2 (en) * | 2002-07-26 | 2004-08-31 | Boc, Inc. | Food sanitizing cabinet |
US20040056201A1 (en) * | 2002-09-19 | 2004-03-25 | Fink Ronald G. | Food surface sanitation hood |
US7160566B2 (en) * | 2003-02-07 | 2007-01-09 | Boc, Inc. | Food surface sanitation tunnel |
US6787782B1 (en) | 2003-04-23 | 2004-09-07 | B/E Aerospace, Inc. | Ultraviolet-light vehicle air cleaning system |
FR2887616B1 (en) * | 2005-06-22 | 2013-03-01 | Valeo Systemes Thermiques | DEVICE FOR ANTIMICROBIAL TREATMENT BY DIFFUSION OF A VOLATILE TREATING AGENT FOR A VENTILATION, HEATING AND / OR AIR CONDITIONING INSTALLATION, OF A VEHICLE IN PARTICULAR |
WO2017070359A1 (en) | 2015-10-23 | 2017-04-27 | Cleanco Bioscience Group, Llc | Uv sterilization apparatus, system, and method for forced-air patient heating systems |
CN106739969A (en) * | 2016-12-15 | 2017-05-31 | 合肥观云阁商贸有限公司 | The vehicle-mounted filtering perfume fumigator of ultraviolet disinfection |
US10960098B2 (en) * | 2018-07-03 | 2021-03-30 | Apogee Lighting Holdings, Llc | Multi-functional lighting fixture |
WO2021126459A1 (en) * | 2019-12-17 | 2021-06-24 | Aerobiotix, Inc. | Medical air handling system with laminar flow and energy-based air decontamination |
EP3878522A1 (en) * | 2020-03-09 | 2021-09-15 | Markus Bindhammer | Respirator mask |
RU2730066C1 (en) | 2020-05-19 | 2020-08-17 | Общество с ограниченной ответственностью ЛитТрансСервис | Decontamination of elevator cabin by uv radiation |
RU2744143C1 (en) * | 2020-06-23 | 2021-03-03 | Федеральное государственное унитарное предприятие "Ростовский-на-Дону научно-исследовательский институт радиосвязи" (ФГУП "РНИИРС") | Semi-open device for air disinfection in an air-conditioned room |
RU2732861C1 (en) * | 2020-07-23 | 2020-09-23 | Акционерное Общество «Научно-Производственное Объединение «Тепломаш» | Method and device for individual protection against pathogenic microorganisms and viruses |
MX2023002513A (en) * | 2020-09-02 | 2023-05-17 | EnspiAIR LLC | Air treatment system with airflow detection. |
RU209284U1 (en) * | 2021-09-22 | 2022-03-14 | Общество с ограниченной ответственностью "РЭМО-Технологии" | Bactericidal recirculator for air disinfection |
CN114043852B (en) * | 2021-11-15 | 2023-06-23 | 东风悦享科技有限公司 | Unmanned vehicle deodorizing system and method based on GPS positioning |
CN114623648A (en) * | 2022-04-15 | 2022-06-14 | 长虹美菱股份有限公司 | Antibacterial humidifying device and refrigerator |
Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
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US3757495A (en) * | 1971-12-30 | 1973-09-11 | W Sievers | Portable air purifier |
US3846072A (en) * | 1973-06-28 | 1974-11-05 | L Patterson | Ultraviolet lamp fixture |
GB2212370A (en) * | 1987-11-09 | 1989-07-19 | Tiong Ee Ong | Air purifying apparatus |
GB2215234A (en) * | 1988-03-09 | 1989-09-20 | Forward Team 8 Private Limited | An air filtering apparatus |
US5112370A (en) * | 1989-12-13 | 1992-05-12 | Michele Gazzano | Device for sterilizing a forced air flow by means of ultraviolet radiations |
WO1992020974A1 (en) * | 1991-05-17 | 1992-11-26 | Vertron International Pty. Limited | Disinfectant system |
US5225167A (en) * | 1991-12-30 | 1993-07-06 | Clestra Cleanroom Technology, Inc. | Room air sterilizer |
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FR2360199A1 (en) * | 1976-07-27 | 1978-02-24 | Pellin Henri | NEGATIVE IONIZER |
US4935232A (en) * | 1983-08-16 | 1990-06-19 | Interface Research Corporation | Microbiocidal composition and method of preparation thereof |
JPS61279248A (en) * | 1985-06-04 | 1986-12-10 | 陽道産業株式会社 | Method and apparatus for sterilizing and deodorizing air of wide region |
JPH0814383B2 (en) * | 1986-11-06 | 1996-02-14 | 三洋電機株式会社 | Blower |
JPS63209660A (en) * | 1987-02-25 | 1988-08-31 | 及川 晃 | Air sterilizing apparatus |
JPS63230170A (en) * | 1987-03-19 | 1988-09-26 | 東洋紡績株式会社 | Antibacterial deodorizing molded product and its production |
JP2538985B2 (en) * | 1988-04-21 | 1996-10-02 | 三菱重工業株式会社 | Circulating air sterilization / deodorization system |
ATE157013T1 (en) * | 1994-03-25 | 1997-09-15 | Perentron Engineering Limited | METHOD FOR PURIFYING AIR AND DEVICE FOR IMPLEMENTING THE METHOD |
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JPH1147257A (en) * | 1997-07-30 | 1999-02-23 | Iwasaki Electric Co Ltd | Air sterilizer |
EP1066878B1 (en) * | 1998-09-30 | 2006-03-15 | Nippon Sheet Glass Co., Ltd. | Photocatalyst article, article prevented from fogging and fouling, and process for producing article prevented from fogging and fouling |
JP2000116762A (en) * | 1998-10-09 | 2000-04-25 | Fuji Kiki Kk | Deodorizing and sterilizing device |
JP3924589B2 (en) * | 1998-11-25 | 2007-06-06 | 川崎設備工業株式会社 | Air cleaner |
US20030021721A1 (en) * | 2002-07-16 | 2003-01-30 | Microgenix Limited | Purification of air |
-
2000
- 2000-07-11 GB GBGB0017058.9A patent/GB0017058D0/en not_active Ceased
-
2001
- 2001-07-11 EP EP01949674A patent/EP1313517B1/en not_active Expired - Lifetime
- 2001-07-11 JP JP2002508490A patent/JP2004504869A/en active Pending
- 2001-07-11 WO PCT/GB2001/003124 patent/WO2002004036A1/en active IP Right Grant
- 2001-07-11 CA CA002417561A patent/CA2417561C/en not_active Expired - Fee Related
- 2001-07-11 CN CNB018126529A patent/CN1185017C/en not_active Expired - Fee Related
- 2001-07-11 DE DE60137053T patent/DE60137053D1/en not_active Expired - Fee Related
- 2001-07-11 US US10/070,721 patent/US20030039576A1/en not_active Abandoned
- 2001-07-11 AU AU2001270793A patent/AU2001270793A1/en not_active Abandoned
- 2001-07-11 RU RU2003103846/13A patent/RU2280473C2/en not_active IP Right Cessation
- 2001-07-11 AT AT01949674T patent/ATE417634T1/en not_active IP Right Cessation
- 2001-07-11 NZ NZ523901A patent/NZ523901A/en unknown
-
2003
- 2003-07-11 HK HK03105044.2A patent/HK1052657A1/en unknown
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US3757495A (en) * | 1971-12-30 | 1973-09-11 | W Sievers | Portable air purifier |
US3846072A (en) * | 1973-06-28 | 1974-11-05 | L Patterson | Ultraviolet lamp fixture |
GB2212370A (en) * | 1987-11-09 | 1989-07-19 | Tiong Ee Ong | Air purifying apparatus |
GB2215234A (en) * | 1988-03-09 | 1989-09-20 | Forward Team 8 Private Limited | An air filtering apparatus |
US5112370A (en) * | 1989-12-13 | 1992-05-12 | Michele Gazzano | Device for sterilizing a forced air flow by means of ultraviolet radiations |
WO1992020974A1 (en) * | 1991-05-17 | 1992-11-26 | Vertron International Pty. Limited | Disinfectant system |
US5225167A (en) * | 1991-12-30 | 1993-07-06 | Clestra Cleanroom Technology, Inc. | Room air sterilizer |
Cited By (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2002075232A1 (en) | 2001-03-21 | 2002-09-26 | Robert Charles Dwyer | Fluid to gas heat exchangers |
US6918435B2 (en) | 2001-03-21 | 2005-07-19 | Robert Charles Dwyer | Fluid to gas heat exchangers |
EP1660211A2 (en) * | 2003-05-08 | 2006-05-31 | Eco-Rx, Inc. | System for purifying and removing contaminants from gaseous fluids |
JP2007500055A (en) * | 2003-05-08 | 2007-01-11 | エコ−アールエックス, インコーポレイテッド | System for purifying and removing contaminants from gaseous fluids |
EP1660211A4 (en) * | 2003-05-08 | 2007-04-25 | Eco Rx Inc | System for purifying and removing contaminants from gaseous fluids |
WO2004108174A1 (en) * | 2003-06-06 | 2004-12-16 | Dwje Limited | Aircraft air disinfection system |
US11406729B2 (en) | 2017-08-31 | 2022-08-09 | Aeroclean Technologies, Llc | Air treatment system and method |
US11850336B2 (en) | 2020-05-22 | 2023-12-26 | Molekule Group, Inc. | UV sterilization apparatus, system, and method for aircraft air systems |
US11779675B2 (en) | 2020-10-19 | 2023-10-10 | Molekule Group, Inc. | Air sterilization insert for heating, ventilation, and air conditioning (HVAC) systems |
Also Published As
Publication number | Publication date |
---|---|
AU2001270793A1 (en) | 2002-01-21 |
EP1313517B1 (en) | 2008-12-17 |
CA2417561C (en) | 2008-10-14 |
DE60137053D1 (en) | 2009-01-29 |
CN1441681A (en) | 2003-09-10 |
CN1185017C (en) | 2005-01-19 |
CA2417561A1 (en) | 2002-01-17 |
HK1052657A1 (en) | 2003-09-26 |
EP1313517A1 (en) | 2003-05-28 |
RU2280473C2 (en) | 2006-07-27 |
US20030039576A1 (en) | 2003-02-27 |
GB0017058D0 (en) | 2000-08-30 |
NZ523901A (en) | 2004-09-24 |
ATE417634T1 (en) | 2009-01-15 |
JP2004504869A (en) | 2004-02-19 |
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