WO2022213160A1 - Système de désinfection pour aéronef et procédé de désinfection d'intérieurs d'aéronefs - Google Patents

Système de désinfection pour aéronef et procédé de désinfection d'intérieurs d'aéronefs Download PDF

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Publication number
WO2022213160A1
WO2022213160A1 PCT/BR2021/050138 BR2021050138W WO2022213160A1 WO 2022213160 A1 WO2022213160 A1 WO 2022213160A1 BR 2021050138 W BR2021050138 W BR 2021050138W WO 2022213160 A1 WO2022213160 A1 WO 2022213160A1
Authority
WO
WIPO (PCT)
Prior art keywords
uvc
far
sub
aircraft
interior areas
Prior art date
Application number
PCT/BR2021/050138
Other languages
English (en)
Inventor
Paulo Anchieta Da Silva
Lucien Maurice LE BOURLEGAT
Ricardo Rosa Macêdo
Luis Gustavo D’Andrea Demétrio CORREA
Rodolfo Faria TIRAPELLI
Priscila dos Santos OLIVEIRA
Original Assignee
Embraer S.A.
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 Embraer S.A. filed Critical Embraer S.A.
Priority to PCT/BR2021/050138 priority Critical patent/WO2022213160A1/fr
Publication of WO2022213160A1 publication Critical patent/WO2022213160A1/fr

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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
    • A61L9/18—Radiation
    • A61L9/20—Ultraviolet radiation
    • 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
    • A61L2/02—Methods or apparatus for disinfecting or sterilising materials or objects other than foodstuffs or contact lenses; Accessories therefor using physical phenomena
    • A61L2/08—Radiation
    • A61L2/10—Ultraviolet radiation
    • 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
    • A61L2202/10—Apparatus features
    • A61L2202/14—Means for controlling sterilisation processes, data processing, presentation and storage means, e.g. sensors, controllers, programs
    • 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
    • A61L2209/11—Apparatus for controlling air treatment
    • A61L2209/111—Sensor means, e.g. motion, brightness, scent, contaminant sensors

Definitions

  • the present invention relates to a system and a method to disinfect aircraft interiors, based on a control of the intensity and irradiation of ultraviolet waves, particularly “FAR-UVC” in the range of 220nm to 224nm such that allows its application without causing clinical problems with humans.
  • FAR-UVC ultraviolet wave
  • Airborne-mediated microbial diseases represent one of the major challenges to worldwide public health. Common examples are influenza, appearing in seasonal and pandemic forms, and bacterially based airborne- mediated diseases such as tuberculosis, increasingly emerging in multi-drug resistant form.
  • Microbial pathogenic contaminations have world widely represented a serious health hazard to humans. Viruses, as a member of microbial contaminants, seriously threaten human health due to their high environmental resistance, having small sizes, and causing an extensive range of diseases.
  • ultraviolet light exposure is a direct antimicrobial approach, whose effectiveness against different strains of airborne microorganisms has long been established.
  • UVC short-wave ultraviolet
  • UVC light disinfection systems have been increasingly used in health care settings in an attempt to decrease the transmission of pathogens and prevent health care associated infections.
  • UV disinfection systems use germicidal lamps emitting UVC around 254nm, but these lamps can be used to disinfect unoccupied spaces only.
  • some studies have aimed to investigate the in vitro efficacy of 222nm Far-UVC on the disinfection surface contamination, when exposed in aerosol droplets of sizes similar to those generated during sneezing and coughing.
  • Far-UVC efficiently inactivates airborne aerosolized viruses, with a low dose of 2 mJ/cm 2 of 222nm light inactivated >95% of aerosolized H1N1 influenza virus, and low doses of 1.7 and 1.2 mJ/cm 2 inactivated 99.9% of aerosolized coronavirus alpha and beta, respectively.
  • document US9623133 discloses a disinfection system to perform a disinfection process inside an aircraft lavatory when the lavatory is not in use and the disinfection system is inactive when the lavatory is in use.
  • an activation system that controls activation and deactivation of the disinfection system.
  • this disinfection system comprises a source of far ultraviolet radiation which is located in or on a ceiling of the lavatory to perform the disinfection process on at least one surface inside the lavatory.
  • a sensor system detects whether the lavatory is occupied or unoccupied so the UV must be used only when it is unoccupied.
  • the present invention aims to provide a disinfection system for aircraft interiors based on a control of the intensity and irradiation of ultraviolet waves, Far-UVC, allowing its safe application in an occupied area without causing clinical problems to humans.
  • the aim of this invention is a disinfection system for aircraft interiors that comprises: a Far-UVC sub-system installed in aircraft interior areas previous defined for sanitization; and at least a database comprising information about the aircraft interior areas and its availability to the Far-UVC sub-system during the preparation of the aircraft and on board at cruise; the Far-UVC sub-system comprising:
  • an application server capable to store data of the disinfection process and signals of other systems in the aircraft
  • (iii) at least a processor unit to calculate, to evaluate, to monitor and to control the intensity, energy and time exposition of the ultraviolet waves applied in the aircraft interior areas during the preparation of the aircraft and on board at cruise, sending the data of the disinfection process to be stored in the application server.
  • step (d) If the Far-UVC sub-system intensity and radiation are out of the predefined minimum parameters, dimmers and filters are switched on to control the UV intensity and irradiation rate and it returns to step (d);
  • Figure 1 - is a flowchart of the disinfection system for aircraft interiors, objection of this invention.
  • Figure 2 - is a flowchart of the method to disinfect aircraft interiors, objection of this invention.
  • the Far-UVC sub-system comprises means to scan air and surfaces 224 inside the aircraft interior areas using the databases 220 information.
  • These means to scan air and surfaces 224 are at least UV lamps and sensors, such as UV Radiometers and UV Spectroradiometers, that are installed in strategic points in the interior areas previously defined by sanitization protocols and which will be able to do a scan in the air and in the surfaces of the components installed in these interior areas of the aircraft to be able to calculate the intensity and energy of the ultraviolet waves applied in that location.
  • the Far-UVC sub-system also calculates and defines as initial data, the necessary time of the ultraviolet waves exposition which will varies from the interior area, size, amount of surfaces and the sanitization protocol for each environment.
  • the initial data from the means to scan the air and surfaces 224 are then stored in an application server 221 which is capable to store data of the disinfection process and signals of other systems in the aircraft. These initial data are accessed and used by at least a processor unit 223 to calculate, to evaluate, to monitor and to control the intensity, energy and time exposition of the ultraviolet waves applied in the aircraft interior areas during the preparation of the aircraft and on board at cruise, when the passenger and crewmembers are already using the interior areas, according to minimum predefined parameters. All these data of the disinfection processes are sent to be stored in the application server 221 , such as data, hour, time, exposition, intensity, irradiation and others. These information are stored to be monitored and to be consulted any time. [0034] Further, the processor unit 223 also uses dimmers and filters to modify the intensity and the energy of the ultraviolet waves applied in the aircraft interior areas when it is necessary to adequate these parameters to the minimum predefined parameters.
  • the radiation of the ultraviolet waves applied in the aircraft interior areas according to the predefined minimum parameters is 3mJ/cm 2 /h.
  • the intensity of the ultraviolet waves Far-UVC is in the rage of 220nm to 224nm, preferably 222nm and the time of the exposition is predefined by Far-UVC sub-system according to the internal area and sanitization protocols.
  • the disinfection system also comprises a passenger server 225 that executes user interface commands to the Far-UVC sub-system, allowing interactions between the passenger and the Far-UVC sub-system. These interactions are made by a touch display of a video monitor or other input device connected to the Far-UVC sub-system and which provides the passenger permission to voluntarily cancel the process for scan of sanitization near the passenger localization.
  • the information introduced in the disinfection system by the passenger by the input device are also stored in the application server in other to be considered when the disinfection system is monitoring the exposition of the aircraft interior areas to the ultraviolet waves Far-UVC to follow the sanitizations protocols.
  • a method to disinfect aircraft interior is also an object of this invention. As illustrated in figure 2, this method starts with the switch of the Far- UVC sub-system in an OFF position 202.
  • the information about the aircraft interior areas are made available 203 to the Far-UVC sub-system 201. These are necessary information to know if the aircraft interiors, i.e., cabin, lavatory, cockpit and others, are power on and available for the Far-UVC sub-system.
  • the switch of the Far-UVC sub-system 201 is kept power off 202, since it means that no sanitization is need yet.
  • the Far-UVC sub-system 201 calculates and evaluates the intensity, energy and time exposition of the ultraviolet waves already applied in the aircraft interior areas 207 and compare to predefined minimum parameters, verifying if the touch surfaces of the interior areas received at least 3mJ/cm 2 /h for necessary time predefined by the Far-UVC according to the internal area and sanitization protocols.
  • the switch of the Far-UVC sub system 201 is kept power off 202, but if the aircraft interior areas still have to receive the energy and time exposition of the ultraviolet waves according to the predefined minimum parameters, the switch of the Far-UVC sub-system 201 is kept power ON 205 and the disinfection system is activated.
  • the method to disinfect aircraft interior also provides a step of monitoring and controlling the Far-UVC sub-system intensity and radiation 208 according to the predefined minimum parameters. In this step, it is verified if the Far-UVC sub-system is with intensity in range of 220nm to 224nm and with radiation of 3mJ/cm 2 /h.
  • the Far-UVC sub-system intensity and radiation are according to the predefined minimum parameters, it is verified if the exposition time of the Far-UVC sub-system is activated in a less time than a predefined time parameter 209 initially set. If the exposition time of the Far-UVC sub-system is in a less time than a predefined time parameter, it returns to step of Far-UVC sub-system calculation 207 to be improved and to fulfill these predefined minimum parameters. But if the exposition time of the Far-UVC sub system is according to the predefined time parameter, the last disinfection process data are stored, and it returns to the beginning when the Far-UVC sub system is switched off 202. [0045] It is important to stand out that these method steps are provided during the preparation of the aircraft and also on board at cruise, that is, when the passenger and the crewmembers are onboard and using the aircraft interior areas.
  • this method to disinfect aircraft interior areas has also the step of receiving passenger’s interface commands 206 in real time by an input device and capable to request voluntarily the cancelation of the steps of scan of sanitization around this passenger localization by the touch display or other input device as already described. In this case, if these commands are received, the method returns to the beginning and the Far-UVC sub-system is switched off 202.
  • the radiation exposition of the ultraviolet waves applied in the aircraft interior areas 204 according to predefined minimum parameters is 3mJ/cm 2 /h. Yet, the intensity of the ultraviolet waves Far-UVC is in the rage of 220nm to 224nm and the time of the exposition is predefined by Far-UVC sub system according to the internal area and sanitization protocols.
  • This method is constantly monitoring and controlling the application of the Far-UVC in a restricted range of intensity and irradiance to avoid damage to human health, allowing the applications with passenger and or crewmembers in the disinfected interior areas.
  • the record and storage of the Far-UVC applications history ensure the optimization of applications in selected intervals.
  • the disinfection system and method can be used without the need to exclude people and for this reason they can be used during flight operation, as well as preparation of aircrafts, pre-boarding and deplaning, which will add value to the product with regard to people’s health security.

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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)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

L'invention concerne un système et un procédé de désinfection pour intérieurs d'aéronefs basés sur une commande de l'intensité et de l'irradiation d'ondes ultraviolettes, en particulier le rayonnement ultraviolet C lointain (FAR-UVC) dans la plage allant de 220 nm à 224 nm, de telle sorte que leur application ne pose pas de problèmes cliniques vis-à-vis des êtres humains, et destinés à être utilisés pendant les opérations de vol, ainsi que la préparation des aéronefs, le pré-embarquement et le débarquement.
PCT/BR2021/050138 2021-04-05 2021-04-05 Système de désinfection pour aéronef et procédé de désinfection d'intérieurs d'aéronefs WO2022213160A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/BR2021/050138 WO2022213160A1 (fr) 2021-04-05 2021-04-05 Système de désinfection pour aéronef et procédé de désinfection d'intérieurs d'aéronefs

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/BR2021/050138 WO2022213160A1 (fr) 2021-04-05 2021-04-05 Système de désinfection pour aéronef et procédé de désinfection d'intérieurs d'aéronefs

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Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20070053188A1 (en) * 2005-09-06 2007-03-08 Luminator Holding, L.P. LED ultraviolet air sanitizer light fixture
US8753575B2 (en) * 2005-01-31 2014-06-17 S. Edward Neister Method and apparatus for sterilizing and disinfecting air and surfaces and protecting a zone from external microbial contamination
WO2016164364A1 (fr) * 2015-04-06 2016-10-13 Arthur Kreitenberg Assainissement de surfaces
GB2549192A (en) * 2016-03-31 2017-10-11 Boeing Co Systems and methods for cleaning interior portions of a vehicle
BR102017017951A2 (pt) * 2016-08-24 2018-04-03 The Boeing Company Sistema e método para sanitização por luz ultravioleta, e, veículo
US10228622B2 (en) * 2017-06-26 2019-03-12 The Boeing Company Systems and methods for operating a light system
US10702618B2 (en) * 2017-06-26 2020-07-07 The Boeing Company Disinfection systems and methods for operating a light system
WO2020223820A1 (fr) * 2019-05-07 2020-11-12 Barry Hunt Systèmes et procédés pour désinfecter une installation
US10874760B2 (en) * 2014-10-15 2020-12-29 Xenex Disinfection Services Inc. Pre-doffing disinfection systems and methods
US20210113723A1 (en) * 2019-10-17 2021-04-22 Raffel Systems, Llc Uv-sanitizing apparatuses and systems
US20210346561A1 (en) * 2020-05-08 2021-11-11 The Boeing Company Ultraviolet light sanitizing pacing systems and methods

Patent Citations (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US8753575B2 (en) * 2005-01-31 2014-06-17 S. Edward Neister Method and apparatus for sterilizing and disinfecting air and surfaces and protecting a zone from external microbial contamination
US20070053188A1 (en) * 2005-09-06 2007-03-08 Luminator Holding, L.P. LED ultraviolet air sanitizer light fixture
US10874760B2 (en) * 2014-10-15 2020-12-29 Xenex Disinfection Services Inc. Pre-doffing disinfection systems and methods
WO2016164364A1 (fr) * 2015-04-06 2016-10-13 Arthur Kreitenberg Assainissement de surfaces
GB2549192A (en) * 2016-03-31 2017-10-11 Boeing Co Systems and methods for cleaning interior portions of a vehicle
BR102017017951A2 (pt) * 2016-08-24 2018-04-03 The Boeing Company Sistema e método para sanitização por luz ultravioleta, e, veículo
US10228622B2 (en) * 2017-06-26 2019-03-12 The Boeing Company Systems and methods for operating a light system
US10702618B2 (en) * 2017-06-26 2020-07-07 The Boeing Company Disinfection systems and methods for operating a light system
WO2020223820A1 (fr) * 2019-05-07 2020-11-12 Barry Hunt Systèmes et procédés pour désinfecter une installation
US20210113723A1 (en) * 2019-10-17 2021-04-22 Raffel Systems, Llc Uv-sanitizing apparatuses and systems
US20210346561A1 (en) * 2020-05-08 2021-11-11 The Boeing Company Ultraviolet light sanitizing pacing systems and methods

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