WO1999030087A1 - Ecran filtre therapeutique d'ouverture d'aeration - Google Patents
Ecran filtre therapeutique d'ouverture d'aeration Download PDFInfo
- Publication number
- WO1999030087A1 WO1999030087A1 PCT/AU1998/001016 AU9801016W WO9930087A1 WO 1999030087 A1 WO1999030087 A1 WO 1999030087A1 AU 9801016 W AU9801016 W AU 9801016W WO 9930087 A1 WO9930087 A1 WO 9930087A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- air vent
- filter screen
- therapeutic
- air
- vent filter
- Prior art date
Links
Classifications
-
- 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
-
- 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
- F24F8/50—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by odorisation
-
- 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
- A61L9/01—Deodorant compositions
-
- 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
- A61L9/015—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone
- A61L9/04—Disinfection, sterilisation or deodorisation of air using gaseous or vaporous substances, e.g. ozone using substances evaporated in the air without heating
-
- 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
- B01D46/00—Filters or filtering processes specially modified for separating dispersed particles from gases or vapours
- B01D46/10—Particle separators, e.g. dust precipitators, using filter plates, sheets or pads having plane surfaces
-
- 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
- F24F8/24—Treatment, e.g. purification, of air supplied to human living or working spaces otherwise than by heating, cooling, humidifying or drying by sterilisation using sterilising media
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2273/00—Operation of filters specially adapted for separating dispersed particles from gases or vapours
- B01D2273/30—Means for generating a circulation of a fluid in a filtration system, e.g. using a pump or a fan
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01D—SEPARATION
- B01D2279/00—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses
- B01D2279/50—Filters adapted for separating dispersed particles from gases or vapours specially modified for specific uses for air conditioning
Definitions
- THIS INVENTION relates to a filter screen for an air vent.
- a filter screen that may be impregnated with a carrier and a therapeutic agent to improve the quality of air passing through the vent.
- Air passing through these vents usually carries particles of dust, lint, pollen, spores, mites and other matter suspended in the air flow. These particles may act as provocative agents to incite episodes of asthma, hayfever or other allergies.
- US Patent No 3, 572, 243 describes a device for delivery of fan-forced air through a filter and across an opening such as a door or window.
- the primary purpose of the air "curtain” is to prevent ingress of dust and insects into a building.
- the air provided, however, is simply passed through a dry filter with no other enhancement of its quality.
- filters are also known in air conditioning systems that draw air from outside a conditioned chamber and also those systems that recycle air from the chamber.
- These filters are usually comprised simply of a filter element of a fibrous or paper type which mechanically filter the air for an entire building.
- the use of such a filter would allow individual treatment of the air in one room or treatment of a group of rooms independently of the rest of a building. This may be particularly important in the light of increasing statutory requirements for healthy workplace environments.
- Empirical evidence strongly supports the theory that enhancing the quality of the air in a workplace causes a direct increase in productivity. This increased productivity results in distinct economic advantage to employers.
- the Legionella organism has been found to successfully colonise air conditioning cooling towers with subsequent distribution through ducting.
- Any filter system installed between the cooling system and recipient of conditioned air can be of assistance in decreasing the risk of disease. This is particularly so if that system is able to trap bacterial particles as well as exert an antibacterial effect.
- therapeutic agent includes pharmaceutical agents, aromatherapy oils, antiseptic agents and insect repellents.
- the invention resides in a therapeutic air vent filter screen comprising: a non-woven fibrous material which is dimensioned to cover a vent through which air flows; attachment means for maintaining the material in position relative to the air vent such that air passing through the air vent is filtered; a viscous carrier applied to the material; and a therapeutic agent associated with the carrier and of a volatile nature such that the therapeutic agent permeates air passing through the vent.
- a therapeutic air vent filter screen to control the local environment leads to surprising degree of improvement in air quality. This is particularly the case in air conditioned rooms where pressurisation of the room relative to outside air pressure leads to little intrusion of untreated air.
- Application of the invention at the air vent level gives unexpected advantages in quality enhancement over and above other forms of air circulation/filtration combinations.
- the material is suitably selected from one or more of RayonTM, polyester, wool and hemp.
- the carrier is a light natural oil.
- the carrier is selected from one or more of tea tree oil, almond oil, hemp oil and neem oil.
- the carrier is impregnated into the material.
- the therapeutic agent is an aromatherapeutic oil.
- the therapeutic agent may be a pharmaceutical agent.
- the pharmaceutical agent may be salbutamol (ventolinTM).
- the therapeutic agent may be an insect repellent.
- the therapeutic agent has disinfectant properties.
- the therapeutic agent may comprise two or more of a pharmaceutical agent, an agent having an aromatherapeutic effect, an agent having disinfectant properties and an insect repellent.
- the therapeutic air vent filter screen further comprises a colour additive to indicate the presence of the therapeutic agent.
- the therapeutic air vent filter screen may include a chemical indicator for indicating a time for replacing the therapeutic air vent filter screen.
- the attachment means comprises a resilient band attached to the material and expandable so as to engage an air vent and thereby retain the material in position across air flow from the vent.
- the attachment means may further comprise an attachment frame that is attachable to or near the air vent and projects from the air vent so that the resilient band can be engaged with the frame.
- the attachment means comprises a frame support to removably receive at least one cartridge, said at least one cartridge confining the non-woven fibrous material.
- the attachment means comprises hook and loop fasteners (VelcroTM) for retention of the non- woven fibrous material in position in relation to the vent.
- VelcroTM hook and loop fasteners
- the attachment means comprises a plurality of hook projections secured to a surface adjacent the air vent and engagable with the material.
- the attachment means may further comprise an auxiliary fan to augment the flow of air through the non-woven fibrous material.
- a wad treated with one or more therapeutic agents is retained in a wad retaining means joined to the non-woven fibrous material.
- the wad retaining means is preferably a loop or pocket.
- the wad is preferably formed from a non-woven cellulose-based fibre material.
- FIG. 1 is a sectional schematic view of a ceiling with an air vent having an air vent filter screen attached.
- FIG. 2 is an exploded sectional view of a ceiling with an air vent filter screen and attachment frame.
- FIG. 3 is an exploded sectional view of a ceiling with an air vent and attachment frame with hook fasteners.
- FIG. 4 is a plan view of a filter fibre mounting frame and filter fibre locking frame.
- FIG. 5 is a cross-sectional view of the locking frame of FIG 4 located in the mounting frame.
- FIG. 6 is an exploded schematic view of a frame support with filter cartridges and an auxiliary fan.
- FIG. 7 is a schematic sectional view of a frame support located above a ceiling air vent.
- FIG. 8 is a sectional view of the filter showing air flow paths and a wad retaining loop.
- FIG. 1 there is shown an air vent filter screen 1 located adjacent to an air vent 2 which penetrates ceiling 3. Ducting 4 channels air flow 5 through air vent 2 and across air vent filter screen 1. Air vent filter screen 1 is composed of a non-woven fibrous material 6 such that air flow 5 must follow a tortuous track in penetrating the air vent filter screen 1. As a result of following this tortuous track, particles of matter entrained in air flow 5 contact fibres of material 6 and are retained by the filter screen 1.
- the material 6 is impregnated or coated with a light oil, such as tea tree oil (melaleuca alternifolia).
- tea tree oil has a double effect on the effectiveness of the filter. Firstly, it has an antimicrobial action to disinfect the air passing through the filter screen 1. Secondly, the oil aids in trapping dust from the air into the filter screen 1.
- tea tree oil is preferred, it will be appreciated that other light oils, such as hemp oil, neem oil, wheat germ, jojoba, grape seed or almond oil could be used.
- the inventors have found that the filter material provides a suitable matrix for carrying essential oils used in aromatherapy.
- Essential oils are volatile oils generally derived from the leaves, stems, flowers or twigs of plants. Chemically, they are principally terpenes (hydrocarbons) but many other types occur. The majority of essential oils have a low oral and dermal toxicity.
- the filter is sprayed with a carrier in the form of a light oil, such as tea tree oil and additionally an aromatherapy blend of essential oils is added.
- the actual blend of essential oils is a matter of taste for the user. Persons having knowledge of aromatherapy will know that a large number of blends are possible from the 36 essential oils.
- the therapeutic agent may be a pharmaceutical agent, such as ventolinTM for medication of the environment in a room.
- the invention is not limited to ventolinTM but could be used with any medication that may be released into the environment.
- the therapeutic agent may be an insect repellent for the purposes of treating the air to avoid the presence of biting insects, such as mosquitos. This may be of particular importance in areas that suffer from arthropod borne diseases, such as Ross River Fever and Dengue Fever.
- the filter has an effective life limited by the evaporation rate of the agents and the quantity of agents applied to the material.
- this lifetime feature is enhanced by treating the therapeutic agent with a colour additive that indicates the presence of the therapeutic agent. When the colour is gone from the filter, it indicates that the therapeutic agent has evaporated and the therapeutic value is negligible. This indicates to the user that it is time to replace the filter.
- a separate chemical indicator can be used to indicate the time to change the filter. The chemical indicator could be linked directly to duration of use or to dust captured.
- FIG. 2 shows a sectional view of an air vent 2 penetrating ceiling 3 and connected to ducting 4.
- An attachment frame 7 has a base 8 and lip 9. The base 8 can be attached to ceiling 3 by any appropriate means such as screw, adhesive or other fastening device.
- Material 6 is connected to a resilient band 10.
- resilient band 10 may be expanded and located around lip 9 and then released so that it contracts to a tight retention fit.
- To replace filter screen 1 it is simply a matter of reversing the above steps to remove an exhausted filter and then locate a replacement filter.
- FIG. 3 shows an alternative retention means in which material 6 is engaged with hook projections 11 located on attachment frame 12.
- material 6 may be attachable to attachment frame 12 by means of hook and loop fasteners (VelcroTM) wherein the hook portion of the fasteners are attached to either the attachment frame or filter screen and the loop portion is attached to the other.
- VelcroTM hook and loop fasteners
- FIG. 4 shows a further embodiment of an attachment means for use with the air vent of the invention.
- a filter fibre mounting frame 13 has a series of projecting teeth 14.
- the mounting frame 13 is attached to a ceiling or wall around an air vent (not shown).
- Non-woven fibrous material is placed so that its fibres engage the teeth 14 and a locking frame 15 is then located inside filter fibre mounting frame 13 and is retained in position either by a friction fit or positive engagement means, such as a screw, nut or adhesive.
- FIG. 5 is a cross-sectional view of one edge of the attachment means of FIG. 4 when assembled. Material 6 is engaged with tooth 14 and locking frame 15 is pushed into contact with filter fibre mounting frame 13.
- FIG. 6 is a schematic view of a frame support 16 with slots
- the frame support 16 is attachable to ceiling 3 so as to surround the air vent 2 which is connected to ducting 4.
- This embodiment allows easy replacement of expired cartridges. It also permits the application of different therapeutic agents to different cartridges in the frame support. A combination of therapeutic agents may then be added to the air to provide a desired result.
- the assembly further includes a removable housing 20 which supports an auxiliary fan 21 to augment the flow of air through the frame support 16 when fully assembled.
- the fan 21 is not essential but may be required when the thickness and type of cartridges 18 used restrict the flow of air to such an extent that ventilation is significantly impeded. Alternatively, the use of the fan 21 may be required in ventilation systems in which the pressure of air delivery is decreased due to the inherent characteristics of the system or due to deterioration and subsequent leakage in the air ducting system.
- FIG. 7 shows a view of a filter support frame 22 which is located between an air vent 23 and ceiling or wall 24. This arrangement presents a less obtrusive end result as the only projection from the ceiling or wall 24 is flange 25.
- FIG. 8 shows the tortuous air path followed by air flow 5 as it traverses material 6.
- therapeutic agents may be applied to a wad which is held by a wad retaining means in the air flow. Such a wad retaining means is shown in FIG 8.
- Loop 26 is stitched to material 6 so as to ensure that air flows past and through a wad (not shown) inserted in loop 26.
- the wad (not shown) is suitably formed from a non-woven cellulose-based fibre.
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- Engineering & Computer Science (AREA)
- Health & Medical Sciences (AREA)
- Chemical & Material Sciences (AREA)
- Combustion & Propulsion (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Epidemiology (AREA)
- Animal Behavior & Ethology (AREA)
- General Health & Medical Sciences (AREA)
- Public Health (AREA)
- Veterinary Medicine (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Agricultural Chemicals And Associated Chemicals (AREA)
- Filtering Materials (AREA)
- Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AU16480/99A AU1648099A (en) | 1997-12-09 | 1998-12-09 | Therapeutic air vent filter screen |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
AUPP0784A AUPP078497A0 (en) | 1997-12-09 | 1997-12-09 | Therapeutic air vent filter screen |
AUPP0784 | 1997-12-09 | ||
AUPP1489 | 1998-01-27 | ||
AUPP1489A AUPP148998A0 (en) | 1998-01-27 | 1998-01-27 | Therapeutic air vent filter screen assembly |
Publications (2)
Publication Number | Publication Date |
---|---|
WO1999030087A1 true WO1999030087A1 (fr) | 1999-06-17 |
WO1999030087A8 WO1999030087A8 (fr) | 1999-09-02 |
Family
ID=25645671
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/AU1998/001016 WO1999030087A1 (fr) | 1997-12-09 | 1998-12-09 | Ecran filtre therapeutique d'ouverture d'aeration |
Country Status (1)
Country | Link |
---|---|
WO (1) | WO1999030087A1 (fr) |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6361578B1 (en) | 2000-07-20 | 2002-03-26 | Rhonda Rubinson | Easy-attach air-duct filter frame |
US20100078014A1 (en) * | 2008-09-30 | 2010-04-01 | Searete Llc, A Limited Liablity Corporation Of The State Of Delaware | Method, composition, and system to control pH in pulmonary tissue of a subject |
WO2011100656A1 (fr) * | 2010-02-15 | 2011-08-18 | Philadelphia University | Méthodes et appareils pour lutter contre le syndrome des bâtiments malsains |
CN108561968A (zh) * | 2018-01-18 | 2018-09-21 | 寻甸牧工商茶叶进出口有限公司 | 无能耗空气清新装置 |
Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1349223A (en) * | 1971-10-15 | 1974-04-03 | Rappold E | Ventilating ambulances |
DE3930023A1 (de) * | 1989-09-08 | 1991-04-11 | Chmiel Horst | Sterilisierbarer filter |
DE4015506A1 (de) * | 1990-05-15 | 1991-11-21 | Hanns Rump | Sicherheitsfiltersystem mit integrierter sensorik zur ermittlung des erschoepfungsgrades |
US5286279A (en) * | 1992-12-14 | 1994-02-15 | W. L. Gore & Associates, Inc. | Gas permeable coated porous membranes |
US5474737A (en) * | 1993-07-01 | 1995-12-12 | The United States Of America As Represented By The Secretary Of Commerce | Alloys for cryogenic service |
US5523057A (en) * | 1995-02-06 | 1996-06-04 | Mazzilli; Matt | Air sterilization and filteration apparatus |
-
1998
- 1998-12-09 WO PCT/AU1998/001016 patent/WO1999030087A1/fr active Application Filing
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
GB1349223A (en) * | 1971-10-15 | 1974-04-03 | Rappold E | Ventilating ambulances |
DE3930023A1 (de) * | 1989-09-08 | 1991-04-11 | Chmiel Horst | Sterilisierbarer filter |
DE4015506A1 (de) * | 1990-05-15 | 1991-11-21 | Hanns Rump | Sicherheitsfiltersystem mit integrierter sensorik zur ermittlung des erschoepfungsgrades |
US5286279A (en) * | 1992-12-14 | 1994-02-15 | W. L. Gore & Associates, Inc. | Gas permeable coated porous membranes |
US5474737A (en) * | 1993-07-01 | 1995-12-12 | The United States Of America As Represented By The Secretary Of Commerce | Alloys for cryogenic service |
US5523057A (en) * | 1995-02-06 | 1996-06-04 | Mazzilli; Matt | Air sterilization and filteration apparatus |
Non-Patent Citations (4)
Title |
---|
DERWENT ABSTRACT, Accession No. 87-153501/22, Class P34; & JP 62090168 A (MATSUSHITA ELEC WORKS) 24 April 1987. * |
DERWENT ABSTRACT, Accession No. 90-235965/31, Class P34; & JP 02164410 A (KOYO KASEI KK) 25 June 1990. * |
DERWENT ABSTRACT, Accession No. 96-241772/25, Class D22; & JP 08094166 A (NEC HOME ELECTRONICS LTD) 12 April 1996. * |
DERWENT ABSTRACT, Accession No. 98-336669/30, Class Q74; & JP 10122639 A (KUKEN KOGYO KK) 15 May 1998. * |
Cited By (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6361578B1 (en) | 2000-07-20 | 2002-03-26 | Rhonda Rubinson | Easy-attach air-duct filter frame |
US20100078014A1 (en) * | 2008-09-30 | 2010-04-01 | Searete Llc, A Limited Liablity Corporation Of The State Of Delaware | Method, composition, and system to control pH in pulmonary tissue of a subject |
US8584670B2 (en) * | 2008-09-30 | 2013-11-19 | Invention Science Fund I, Llc | Method, composition, and system to control pH in pulmonary tissue of a subject |
US8911711B2 (en) | 2008-09-30 | 2014-12-16 | The Invention Science Fund I, Llc | Method, device, and system to control pH in pulmonary tissue of a subject |
WO2011100656A1 (fr) * | 2010-02-15 | 2011-08-18 | Philadelphia University | Méthodes et appareils pour lutter contre le syndrome des bâtiments malsains |
CN102985117A (zh) * | 2010-02-15 | 2013-03-20 | 费城大学 | 用于对抗病态建筑综合症的方法和装置 |
CN108561968A (zh) * | 2018-01-18 | 2018-09-21 | 寻甸牧工商茶叶进出口有限公司 | 无能耗空气清新装置 |
Also Published As
Publication number | Publication date |
---|---|
WO1999030087A8 (fr) | 1999-09-02 |
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