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WO2021260537A1 - Dispositif d'assainissement de locaux, en particulier pour l'assainissement de l'air - Google Patents

Dispositif d'assainissement de locaux, en particulier pour l'assainissement de l'air Download PDF

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Publication number
WO2021260537A1
WO2021260537A1 PCT/IB2021/055483 IB2021055483W WO2021260537A1 WO 2021260537 A1 WO2021260537 A1 WO 2021260537A1 IB 2021055483 W IB2021055483 W IB 2021055483W WO 2021260537 A1 WO2021260537 A1 WO 2021260537A1
Authority
WO
WIPO (PCT)
Prior art keywords
fact
biocidal
sanitizing
filter
pollutants
Prior art date
Legal status (The legal status 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 status listed.)
Ceased
Application number
PCT/IB2021/055483
Other languages
English (en)
Inventor
Enrico BORGHETTI
Michele CHINI
Gian Marco GRASSI ODETTI
Michele Manica
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Aersafe Srl
Original Assignee
Aersafe Srl
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 Aersafe Srl filed Critical Aersafe Srl
Publication of WO2021260537A1 publication Critical patent/WO2021260537A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • 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
    • A61L9/22—Ionisation
    • 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
    • A61L2/00—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor
    • A61L2/16—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using chemical substances
    • A61L2/18—Liquid substances or solutions comprising solids or dissolved gases
    • 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
    • A61L9/14—Disinfection, sterilisation or deodorisation of air using sprayed or atomised substances including air-liquid contact processes
    • 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
    • A61L2101/00—Chemical composition of materials used in disinfecting, sterilising or deodorising
    • A61L2101/02—Inorganic materials
    • A61L2101/26—Inorganic materials containing copper
    • 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
    • A61L2202/00—Aspects relating to methods or apparatus for disinfecting or sterilising materials or objects
    • A61L2202/20—Targets to be treated
    • A61L2202/25—Rooms in buildings, passenger compartments
    • 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

Definitions

  • the present invention relates to a room sanitizing device, particularly for air sanitization.
  • the sanitizing devices of known type comprise a treatment compartment provided with an inlet opening through which the air flow to be sanitized enters and an outlet opening for the sanitized air flow.
  • Such devices are provided with purification means of the type of textile membrane elements configured to be crossed by the air flow to be sanitized and adapted to trap pollutants and/or pathogens present in the air flow.
  • purification means of the type of textile membrane elements configured to be crossed by the air flow to be sanitized and adapted to trap pollutants and/or pathogens present in the air flow.
  • cyclone-type purification devices wherein the air flow to be sanitized is treated by applying the principle of centrifugal force thereto.
  • this type of device is not without its drawbacks.
  • the main aim of the present invention is to devise a room sanitizing device, particularly for air sanitization, which allows ensuring both the sanitization of the air itself and of the device by eliminating the presence of bacterial and/or viral pollutants from the latter.
  • Another object of the present invention is to devise a room sanitizing device, particularly for air sanitization, which allows significantly reducing the maintenance costs of the device itself by allowing restoration of the filtration means and avoiding shutdown of the device itself.
  • Another object of the present invention is to devise a room sanitizing device, particularly for air sanitization, which allows overcoming the aforementioned drawbacks of the prior art within a simple, rational, easy and effective to use as well as affordable solution.
  • the aforementioned objects are achieved by the present room sanitizing device, particularly for air sanitization, having the characteristics of claim 1. Additionally, the aforementioned objects are achieved by the use of a biocidal mixture for sanitizing a room sanitizing device, particularly for air sanitization, having the characteristics of claim 16.
  • Figure 1 is an exploded view of the sanitizing device according to the invention
  • Figure 2 is an exploded view of the sanitizing device according to the invention in an alternative embodiment
  • Figure 3 is a side view of the sanitizing device according to the invention
  • Figure 4 is a plan view from above of the sanitizing device in Figure 3;
  • Figure 5 is a side view of the sanitizing device according to the invention in an alternative embodiment
  • Figure 6 is a side view of the sanitizing device according to the invention in a further embodiment
  • Figure 7 is a plan view from above of the sanitizing device in Figure 6.
  • the present invention relates to a room sanitizing device, particularly for air sanitization.
  • reference numeral 1 globally indicates a room sanitizing device.
  • the expression “sanitizing device” relates to a device adapted to allow air purification and usable in an integrated manner with ventilation and air conditioning systems or in an independent and separate form from these to purify the ambient air, i.e. that does not require integration with an aeration or air conditioning system.
  • the sanitizing device 1 comprises a treatment compartment 14 provided with an inlet opening 2 of an air flow to be sanitized 3 comprising pollutants and/or pathogens and with an outlet opening 4 of the sanitized air flow 5.
  • the expression “pollutants and/or pathogens” relates to substances which, directly or indirectly, produce pollution, thus representing a danger to human health or the environment. In detail, this expression also relates to bacterial, viral and fungal agents.
  • the device 1 comprises purification means 6, 7, 15 of the air flow to be sanitized 3 positioned between the inlet opening 2 and the outlet opening F/BA
  • the device 1 comprises washing means 10 of the treatment compartment 14 comprising, in turn, at least one biocidal and/or sanitizing fluid F adapted to allow solubilization and/or dispersion of the pollutants and/or pathogens.
  • biocidal and/or sanitizing fluid F relates to one or more substances which are effective against harmful organisms and/or microorganisms for the purpose of destroying them, eliminating them, rendering them harmless, preventing their action or exerting a controlling effect thereon.
  • this expression is used for both compliant and non-compliant substances in accordance with EU Regulation 528/2012 and REACH standards No. 1907/2006.
  • biocidal and/or sanitizing fluid F is soluble and/or dispersible in water.
  • the biocidal and/or sanitizing fluid F has high stability over time.
  • the biocidal and/or sanitizing fluid F comprises a liquid mixture comprising one or more copper- based compounds.
  • one or more copper-based compounds relates to the fact that the mixture may comprise one or more compounds either belonging to the same chemical species or belonging to different chemical species.
  • the copper ion performs high biocidal activity due to the non-specific binding affinity with the proteins of pathogenic microorganisms, thus causing their denaturation.
  • the fact that proteins lose their native structure also causes the loss of their biological activity and, therefore, in the case of pathogenic F/BA
  • the one or more copper-based compounds comprise copper sulfate.
  • copper sulfate has free Cu++ ions available in solution.
  • the copper sulfate is pentahydrate.
  • the liquid mixture comprises at least one non-volatile solvent. This means that the liquid mixture comprises one or more non-volatile solvents.
  • the one or more non-volatile solvents comprise water.
  • the liquid mixture comprising an organic solvent.
  • the aforementioned organic solvent is selected from the list comprising: aprotic polar solvents, protic polar solvents and apolar solvents suitable for dispersing and/or solubilizing and/or emulsifying substances with biocidal activity.
  • one or more solvents are suitable in order to solubilize and/or emulsify the biocidal component and, at the same time, allow the sanitization of the air avoiding the emission of odors.
  • the expression “one or more non-volatile solvents” relates to the fact that the biocidal and/or sanitizing fluid F may have both one or more solvents of the same chemical species and one or more solvents of different chemical species. Furthermore, the liquid mixture may comprise one or more additives adapted to increase the biocidal activity of the composition itself.
  • the purification means 6, 7, 15 comprise at least one mechanical filter 15 selected from the list comprising: pocket filter, sleeve bag filter, cartridge filter, candle filter, panel filter, cyclone filter, and multi-cyclone filter ( Figures 6 and 7).
  • the purification means 6, 7, 15 comprise at least one electrostatic filter.
  • the electrostatic filter 6, 7 comprises a plurality of collection electrodes 6 for collecting pollutants and/or pathogens.
  • the collection electrodes 6 are arranged in the proximity of the outlet opening 4.
  • the collection electrodes 6 are made of a conductive metal material.
  • the collection electrodes 6 are made at least partly of copper.
  • the collection electrodes 6 comprise a plurality of plate- shaped elements 8 arranged in series parallel to each other.
  • the electrostatic filter 6, 7 comprises a plurality of charging electrodes 7 adapted to ionize the air flow to be sanitized 3; the pollutants and/or pathogens are attracted by the collection electrodes 6 by electrostatic attraction.
  • the charging electrodes 7 are arranged in the proximity of the inlet opening 2.
  • the charging electrodes 7 are powered by the power supply means 9 adapted to allow ionization of the air flow to be sanitized 3.
  • the power supply means 9 are configured to allow voltages suitable for the operation of the device 1 to be delivered and maintained thanks to the insulation means configured to prevent the aforementioned voltages from being discharged to the ground, such as e.g. in the presence of fouling of the biocidal composition.
  • the potential difference created between the charging electrodes 7 and the collection electrodes 6 allows for the electrostatic attraction of pollutants and/or pathogens onto the collection electrodes themselves.
  • the device 1 comprises filtration means 17, 18 comprising a first filtering element 17 arranged in the proximity of the inlet opening 2 and a second filtering element 18 arranged in the proximity of the outlet opening 4.
  • the first filtering element 17 is configured to allow uniformity of the air flow to be sanitized 3 and, in parallel, the second filtering element 18 is configured to F/BA
  • the washing means 10 are configured to allow washing the purification means 6, 7, 15 and/or the filtration means 17, 18.
  • the washing means 10 are configured to allow washing of at least one of either the collection electrodes 6 or the charging electrodes 7, the first filtering element 17 or the second filtering element 18.
  • the washing means 10 are configured to allow washing of both the purification means 6, 7, 15 and the filtration means 17, 18.
  • the washing means 10 comprise the biocidal and/or sanitizing fluid F and are adapted to allow solubilization and/or dispersion of the pollutants and/or pathogens in the biocidal and/or sanitizing fluid F.
  • the washing means 10 are operatively connected to a storage tank, not shown in detail in the figures, adapted to contain the biocidal and/or sanitizing fluid F.
  • the washing means 10 comprise a plurality of nozzles 11 arranged in the proximity of the purification means 6, 7, 15 and/or of the filtration means 17, 18.
  • the nozzles 11 are arranged in the proximity of the charging electrodes 7 and of the collection electrodes 6.
  • the nozzles 11 are associated with the supporting means 12 adapted to allow the biocidal and/or sanitizing fluid F to be precisely and effectively delivered on the plate- shaped elements 8 and on the charging electrodes 7.
  • the washing means 10 are arranged above the purification means 6, 7, 15; in this case, as visible in Figures 1 and 2, the washing means 10 are arranged above the charging electrodes 7 and the collection electrodes 6. In this way, the delivery of the biocidal and/or sanitizing fluid F from above allows washing in a homogeneous manner the treatment compartment 14, the F/BA
  • washing means 10 are positioned between the inlet opening 2 and the purification means 6, 7, 15 and between the latter and the outlet opening
  • the nozzles 11 are positioned between the charging electrodes 7 and the inlet opening 2 and between the collection electrodes 6 and the outlet opening 4 ( Figures 3 and 4).
  • the nozzles 11 are positioned: between the charging electrodes 7 and the first filtering element 17; - between the collection electrodes 6 and the second filtering element 18; and above the charging electrodes 7 and the collection electrodes 6.
  • washing means 10 comprise the biocidal and/or sanitizing fluid F and are configured to allow for the solubilization and/or dispersion of the pollutants and/or pathogens.
  • the device 1 comprises a plurality of electrostatic filters 6, 7 operatively connected to the washing means 10.
  • the device 1 comprises two electrostatic filters 6, 7.
  • the device 1 comprising an additional treatment compartment 14 ( Figure 2).
  • the additional treatment compartment 14 is provided with a respective inlet opening 2, a respective outlet opening 4 and respective filtration F/BA
  • the latter Under operating conditions, to prevent the operation of the device 1 from being interrupted, the latter has: one of the two treatment compartments 14 wherein the electrostatic filter 6, 7 is active to allow the attraction of the pollutants and/or pathogens on the collection electrodes 6 and the washing means 10 are inactivated; and the other of the treatment compartments 14 wherein the electrostatic filter 6, 7 is inactive and the washing means 10 are activated to allow the washing of the inactivated collection electrodes 6.
  • the other electrostatic filter 6, 7 is active when one electrostatic filter 6, 7 is inactive to allow the washing thereof, the other electrostatic filter 6, 7 is active.
  • electrostatic filters 6, 7 can be activated alternately.
  • the electrostatic filters 6, 7 being arranged aligned with each other along the direction of forward movement of the air flow to be sanitized 3.
  • the device 1 comprises a collection tank 13 for collecting used biocidal and/or sanitizing fluid F, i.e., used during washing of the treatment compartment 14.
  • the collection tank 13 is adapted to collect the used biocidal fluid F falling from the purification means 6, 7, 15 and/or from the filtration means 17,18.
  • the collection tank 13 is arranged below the purification means 6, 7, 15 and the filtration means 17, 18 and is adapted to allow the storage of the used biocidal and/or sanitizing fluid F.
  • biocidal and/or sanitizing fluid F may be easily recovered and subjected to recycling treatments that allow it to be used again in the device 1. This becomes particularly relevant when the biocidal and/or sanitizing fluid F F/BA
  • the biocidal and/or sanitizing fluid F allows, in fact, using the biocidal and/or sanitizing fluid F for multiple washing cycles while maintaining the purification efficiency unchanged over time.
  • the used biocidal and/or sanitizing fluid F may be decanted inside the collection tank 13 to allow the pollutants and/or pathogens to be deposited inside the same. In this manner, the biocidal and/or sanitizing fluid F may be reintroduced into the device 1.
  • the device 1 comprises recirculation means 16 of the biocidal and/or sanitizing fluid F out of the collection tank 13.
  • the device 1 comprises means for injecting a solvent into the storage tank.
  • such injection means are adapted to inject the solvent, preferably water, into the storage tank in such a way that the amount of biocidal and/or sanitizing fluid contained in the storage tank does not decrease during the operation of the device 1.
  • the purification means 6, 7, 15 comprise a wet washing device, of the scrubber type.
  • the device 1 comprises an inlet port of the biocidal and/or sanitizing fluid F positioned downstream of the inlet opening 2 with respect to the direction of forward movement of the air flow to be sanitized 3. This means that the air flow to be sanitized 3 is subjected to washing by coming into contact with the biocidal and/or sanitizing fluid F inside the treatment compartment.
  • the present invention relates to the use of a biocidal mixture for sanitizing the device 1.
  • the biocidal mixture comprises one or more copper-based compounds.
  • the biocidal mixture comprises pentahydrate copper sulphate. F/BA
  • the biocidal mixture comprises at least one non-volatile solvent.
  • the biocidal mixture comprises a non-ionic surfactant.
  • the fact of providing for the use of a mixture comprising copper sulphate in combination with the use of one or more electrostatic filters ensures the air purification in a remarkably effective way compared to the devices of known type, without altering the pressure drops of the air flow to be treated conveyed by means of a pipeline or air duct.
  • the use of copper sulphate allows for the recycling of the used biocidal mixture thus allowing it to be used again for numerous operational cycles.

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  • Health & Medical Sciences (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • General Chemical & Material Sciences (AREA)
  • Disinfection, Sterilisation Or Deodorisation Of Air (AREA)
  • Agricultural Chemicals And Associated Chemicals (AREA)

Abstract

L'invention concerne un dispositif d'assainissement de locaux (1), en particulier pour l'assainissement de l'air, comprenant au moins un compartiment de traitement (14) pourvu : d'au moins une ouverture d'entrée (2) d'un flux d'air à assainir (3) comprenant des polluants et/ou des agents pathogènes ; d'au moins une ouverture de sortie (4) du flux d'air assaini (5) ; de moyens de purification (6, 7, 15) du flux d'air à assainir (3) positionnés entre l'ouverture d'entrée (2) et l'ouverture de sortie (4) ; de moyens de lavage (10) du compartiment de traitement (14) comprenant au moins un fluide biocide et/ou désinfectant (F) conçu pour permettre la solubilisation et/ou la dispersion des polluants et/ou des agents pathogènes.
PCT/IB2021/055483 2020-06-24 2021-06-22 Dispositif d'assainissement de locaux, en particulier pour l'assainissement de l'air Ceased WO2021260537A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT102020000015241A IT202000015241A1 (it) 2020-06-24 2020-06-24 Dispositivo sanificatore d’ambiente, particolarmente per la sanificazione dell’aria
IT102020000015241 2020-06-24

Publications (1)

Publication Number Publication Date
WO2021260537A1 true WO2021260537A1 (fr) 2021-12-30

Family

ID=72473780

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2021/055483 Ceased WO2021260537A1 (fr) 2020-06-24 2021-06-22 Dispositif d'assainissement de locaux, en particulier pour l'assainissement de l'air

Country Status (2)

Country Link
IT (1) IT202000015241A1 (fr)
WO (1) WO2021260537A1 (fr)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433578A (en) * 1963-10-08 1969-03-18 Phillips Petroleum Co Biocidal washing composition and method
US6843835B2 (en) * 2001-03-27 2005-01-18 The Procter & Gamble Company Air cleaning apparatus and method for cleaning air
WO2008053871A1 (fr) * 2006-11-01 2008-05-08 Misawa Homes Co., Ltd. Purificateur d'air

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3433578A (en) * 1963-10-08 1969-03-18 Phillips Petroleum Co Biocidal washing composition and method
US6843835B2 (en) * 2001-03-27 2005-01-18 The Procter & Gamble Company Air cleaning apparatus and method for cleaning air
WO2008053871A1 (fr) * 2006-11-01 2008-05-08 Misawa Homes Co., Ltd. Purificateur d'air

Also Published As

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IT202000015241A1 (it) 2021-12-24

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