WO2022126292A1 - Appareil stérilisateur d'objets par application de lumière uv-c - Google Patents

Appareil stérilisateur d'objets par application de lumière uv-c Download PDF

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Publication number
WO2022126292A1
WO2022126292A1 PCT/CL2020/050184 CL2020050184W WO2022126292A1 WO 2022126292 A1 WO2022126292 A1 WO 2022126292A1 CL 2020050184 W CL2020050184 W CL 2020050184W WO 2022126292 A1 WO2022126292 A1 WO 2022126292A1
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WO
WIPO (PCT)
Prior art keywords
support
objects
irradiation
sterilizing device
irradiable
Prior art date
Application number
PCT/CL2020/050184
Other languages
English (en)
Spanish (es)
Inventor
Patricio Andrés LILLO GALLARDO
Daniel Andrés CHAPARRO DRAPELA
David Felipe DÍAZ TUNJANO
Joaquín Andrés SÁNCHEZ ÓRDENES
Original Assignee
Pontificia Universidad Catolica De Chile
Lightwash Spa
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 Pontificia Universidad Catolica De Chile, Lightwash Spa filed Critical Pontificia Universidad Catolica De Chile
Priority to PCT/CL2020/050184 priority Critical patent/WO2022126292A1/fr
Publication of WO2022126292A1 publication Critical patent/WO2022126292A1/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
    • 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
    • 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
    • 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
    • A61L2/20—Gaseous substances, e.g. vapours
    • 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
    • A61L2/24—Apparatus using programmed or automatic operation
    • 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
    • A61L2/26—Accessories or devices or components used for biocidal treatment

Definitions

  • the present invention relates to the technical field of disinfection and sterilization; Specifically, it refers to a system for sanitizing objects through the application of UVC light irradiation and ozone, where the system optimizes the sanitization process, by allowing the necessary exposure times to UVC light irradiation to be reduced, processing a greater number of articles at a time and ensure effective purification of residual air before it is released into the environment at the end of each sanitization cycle.
  • pathogenic microorganisms can be transmitted to humans through various channels and endanger human health. Once these pathogens infect humans, some of them have a major impact on the health of the population.
  • the contagion power of many viruses, especially that of the new Coronavirus, is one of the relevant edges to face as a containment strategy, with physical protection measures being the first measures to be adopted, among others, are mechanical barriers given by the use of masks, facial shields and gloves. But none of these measures is effective if there is no continuous replacement of gloves and masks, or disinfection of face shields that allow their reuse.
  • the principle of this type of sterilization is to use the appropriate wavelength of ultraviolet light to destroy the molecular bonds of pathogens.
  • UV light is classified into three wavelength ranges: UV-C, from about 200 nanometers (nm) to about 280 nm; UV-B, from about 280nm to about 315nm; and UV-A, from about 315nm to about 400nm.
  • UV-C from about 200 nanometers (nm) to about 280 nm
  • UV-B from about 280nm to about 315nm
  • UV-A from about 315nm to about 400nm.
  • the shorter the wavelength the more power the wave has.
  • Ultraviolet light and in particular light in the UV-C range, is capable of deactivating the DNA of bacteria, viruses and other pathogens, thereby destroying their ability to multiply and cause disease. This effectively results in the sterilization of microorganisms.
  • UV-C light ultraviolet light - C band
  • DNA and RNA genetic material
  • Ultraviolet light with a wavelength between about 250 and about 280 nm provides the greatest germicidal efficacy.
  • a single irradiation source and/or fixed source located in a confined space with walls of reflective material is used, as can be seen in the content of document CN110665029A, published on 01/10/2020, which describes an "Ultraviolet disinfection cabinet for instruments for medical use", where the source is located at a single upper point that irradiates the objects to be sterilized.
  • One of the disadvantages of this type of device is that often, in an object to be sterilized, there are areas that are shaded from the UV irradiation produced by the sole source. Furthermore, the object to be sterilized is required to rest on a support during the sterilization process. When the support is not transparent to UV irradiation, the support also contributes to shading the object.
  • Sterilizing devices are also known that, in addition to operating with UV-C light irradiation, include the application of ozone that enhances the sanitizing effect.
  • the fixed position of the tubes implies that there will always be points of projected shadow where the objects do not receive irradiation, either caused by the tray itself or by objects adjacent to each other. Additionally, the fixed position of the tubes also implies that the points furthest from the objects with respect to the focus will require a longer exposure time to achieve the same irradiation dose as that received at those points closer to the source.
  • the garments are irradiated in their entire height and, by turning the platform, the exposure of each garment to the source is optimized; Its main disadvantage is that the garments, when hanging and rotating the platform, determine that the surfaces to be treated are in a changing, unpredictable position, generating folds that prevent their entire surface from receiving regular irradiation.
  • Another relevant aspect to consider in order to have an effective sanitization system is the safety aspect of its operation; especially in the sense of ensuring that the people who handle the devices are not exposed to the source of UV-C irradiation or to high levels of ozone.
  • the present invention is related to a device for sterilizing objects using UV-C light irradiation and an ozone flow that, in addition to helping to sanitize, allows the elimination of non-volatile odors, where the device is capable of optimizing the sterilization process by reduce the necessary time of exposure to irradiation of several objects at the same time and ensure that the entire surface of the objects receives a minimum necessary dose of sterilization within the reduced period of time; and provide residual air purification at the end of each operating cycle,
  • One of the main objectives of the present invention is to provide an object sterilizing device that allows UV-C light irradiation to be applied for a reduced period, ensuring that the integral surface of the treated objects receives, at least, a minimum necessary dose of irradiation to ensure its sterilization of 20 mJ/cm2.
  • Another of the main objectives of the present invention is to provide an object sterilizing apparatus that allows the simultaneous processing of several objects at the same time during the same operating cycle.
  • Another main objective of the present invention is to provide an object sterilizing device that allows a sterilization process to be carried out safely, on the one hand, eliminating the possibility of a user being exposed to radiation or to a harmful ozone level; and on the other hand, reducing the chances of mishandling that can damage the user due to the breakage of any input content dangerous to their health; which additionally helps to extend the useful life of the supplies.
  • An additional objective of the invention is to provide an object sterilizing apparatus that facilitates the disposition of the objects inside it.
  • Still another objective of the invention is to provide an object sterilizing device that allows different embodiments, where at least one of them is of low implementation cost, so that the largest number of hospitals or other facilities not necessarily medical, can implement one or several devices that allow facing a high demand for sterilization means, as happens during pandemic scenarios.
  • Yet another objective of the present invention is to provide an object sterilizing apparatus that allows efficient processing of several objects at the same time, regardless of their shape, so that all of them receive the target dose of irradiation on their entire surface.
  • An additional objective of the present invention is to provide an object sterilizing device that can be easily operated by a user, without the need for training or expertise in this technology.
  • the specific technical problem is related to being able to sterilize several objects at the same time, in a short time, but without increasing the amount of ultraviolet light sources, since this input is the most expensive to carry out the sterilization procedure.
  • UV energy is the product of the incident UV power (also known as “UV irradiance”) and the exposure time.
  • UV energy can be measured, for example, in joules per square centimeter (J/cm2), and power or irradiance can be measured in units of watts per square centimeter (W/cm2).
  • J/cm2 joules per square centimeter
  • W/cm2 watts per square centimeter
  • the irradiance of ultraviolet light has an exponential attenuation law due to its propagation in air and water, which leads to a significant decrease in its power the greater the distance to the object, and the efficiency of sterilization and disinfection increases. significantly reduces. In other words, if the distance at which the dose is applied is doubled, the irradiance of UVC light decreases not by half, but by four times. In the same way, if the irradiation distance is halved, the irradiation power increases not twice but four times; reducing by four times the time needed to reach an inactivation energy dose.
  • the factor of the distance that each part of the object has to the source is an important factor of the proposal; knowing that, according to the size of a support where the objects are placed, and assuming the type of objects to be treated, there will be a maximum surface to be irradiated that needs to receive an optimal dose of 20 mJ/cm2.
  • the present invention seeks to optimize the sterilization process, since, instead of increasing the number of foci to treat several objects simultaneously and/or increasing the time of exposure to irradiation, it proposes means that adequately mobilize and position the irradiation source with respect to the objective, where said source comprises a minimum number of sources emitting UV-C light, so that all points, on all faces, of several objects irradiated simultaneously, receive at least a minimum dose of sterilizing irradiation during a cycle of minimum duration.
  • the present invention specifically proposes a sterilizing device for objects through the application of UV-C light irradiation and, in addition, the application of an ozone flow, which allows sanitizing parts of objects that have folds or overlapping layers that receive less UV-C irradiation, such as occurs in some clothing.
  • the apparatus is capable of optimizing the sterilization process by reducing the time of exposure to irradiation of several objects at the same time, but ensuring that the entire surface of the objects receives a minimum necessary dose of sterilization within the reduced period of time; and additionally, provide residual air purification at the end of each operating cycle to prevent high levels of ozone from remaining inside the device.
  • the apparatus comprises a multiple source of sterilizing irradiation with UV-C light; a static component with supports to arrange the objects to be treated; a mobile component that carries said multiple irradiation source and describes a linear path; an ozone flow generator; residual air purifying means; a security cabinet containing the components of the device and an electronic control component of the device that allows it to operate automatically.
  • the multiple source of sterilizing irradiation has at least two UV-C light emitting tubes, where a first UV-C light emitting tube is arranged, parallel and distanced, with respect to a second UV-C light emitting tube, to irradiate the objects that are arranged on the supports of the static component, located between both light sources.
  • Each of the supports on which the objects are arranged are transparent to UV-C irradiation and permeable to ozone flows; they have at least one first face and one second face, opposite each other and irradiable directly and simultaneously by said UV-C light-emitting tubes; specifically, said first face of the support is directly irradiated by said first UV-C light emitting tube, and said second face of the support, opposite to the first face, is directly irradiated by the second UV-C light emitting tube.
  • the number of supports is at least one, while the number of UV-C light emitting tubes is in a numerical relationship with respect to the supports, where for each one of the irradiable faces of the support, there is at least one UV-C irradiation emitting tube.
  • the UV-C light-emitting tubes are carried in a mobile component that moves linearly and bidirectionally, in relation to the static component; where said UV-C light emitting tubes are simultaneously movable, at least, in the direction of a transverse axis or a longitudinal axis of the supports.
  • a first UV-C light emitting tube is arranged parallel and spaced with respect to the first irradiable face of the support, according to a first constant distance; and said second UV-C light emitting tube is arranged parallel and spaced with respect to the second irradiable face of the support, according to a second constant distance.
  • said first distance of a first UV-C light-emitting tube with respect to the first irradiable face of the support element is greater than the second distance of a second UV-C light-emitting tube with respect to of the second irradiable side of the same support element.
  • This distance can be adapted according to the type of objects to be treated, mainly depending on their size, and for any of the possible applications, the speed of movement of the light source can be recalculated to achieve the minimum dose.
  • the object supports are positioned horizontally in the static component, like trays; constituting, its first irradiable face, as an upper support surface where the objects to be sterilized are placed; while its second opposite irradiable face is constituted as the lower surface of the support.
  • the supports of the objects are positioned vertically in the static component, constituting its first irradiable face as a first lateral surface, while its second opposite irradiable face is constituted as a second lateral surface. ; said supports being formed as hanging elements from which objects hang in a hanging manner.
  • the object supports are positioned vertically in the static component, as a frame-shaped panel; constituting its first irradiable face as a first lateral surface, while its second opposite irradiable face is constituted as a second lateral surface; where the frame-shaped panels comprise hook elements that allow various objects to be hung.
  • the supports of the objects are positioned horizontally
  • the objects placed on their upper irradiable face will receive direct incident irradiation on their upper and lateral surfaces, coming from the UV-C tube parallel to said upper face, and which, by the way, is distanced from said upper face according to the aforementioned first distance;
  • the lower surface of the objects will not receive incident, direct irradiation from the second UV-C tube parallel to the second support face and which is distanced according to the second distance, since said irradiation is interfered by the body of the object itself. support.
  • said second distance, presented by the second UV-C tube with respect to the second surface of the support is less than the distance presented by the first UV-C tube radiating from the first surface of the support, so as to compensate for the radiation interfered by the support, even though said support is made of a transparent material to UV-C radiation; as well as to compensate for the asymmetry in the shape of the objects to be sterilized.
  • the supports are arranged vertically so that the objects are hung
  • the objects are exposed to direct irradiation by their corresponding first and second UV-C tubes, so that, in these cases, the distance between the first UV-C tube with respect to the first irradiable face of the support is equal to the distance between the second UV-C tube with respect to the second irradiable face of the same support.
  • a perimeter contour is defined between both first and second irradiable faces, which, in an embodiment of the invention, said supports can be quadrangular or rectangular in shape, the perimeter contour is formed by a front edge, opposite to a rear edge, between which lateral edges extend, also opposite each other.
  • said front edge and said rear edge of the support are parallel to the longitudinal axis of the support. While, in another embodiment, said front edge and said rear edge are parallel to the transverse axis of the support.
  • the support can be of any other suitable form, which facilitates the distribution of various objects, which facilitates their production and, at the same time, facilitates the assembly of the support in the apparatus.
  • the support comprises a rigid perimeter frame that supports and tensions a woven structure, forming a regular open grid, based on filamentary elements of transparent material to UV-C irradiation, where the open grid generates multiple openings that allow permeability to an ozone flow and ensure transparency to irradiation.
  • the material transparent to UV-C irradiation of the woven filamentary elements, which make up the grid is preferably a polymeric material, such as a polyamide compound.
  • the object support comprises a rigid perimeter frame that supports a multi-perforated laminar structure to provide permeability to an ozone flow, where this laminar structure is made of a transparent material to UV-C irradiation to allow the lower surface of the treated object, receives sufficient irradiation to complete a minimum dose necessary for its sterilization.
  • the object support comprises a rigid perimeter frame that supports multiple rigid linear elements forming a support grid, where the elements are spaced apart from each other forming spaces to provide permeability to an ozone flow, and They are made of a material transparent to UV-C irradiation to allow the lower surface of the treated object to receive sufficient irradiation to complete a minimum dose necessary for its sterilization.
  • the material transparent to UV-C irradiation can be selected from quartz, glass or an alloy of glass and quartz.
  • Said static component that forms part of the apparatus and that is mainly the one that contains the supports of the objects, is formed by at least two structural frames, spaced apart, each one formed by at least two parallel vertical straight profiles, based on which are mounted straight guides for the movement of the mobile component, and some sliders in which the supports of the objects are mounted.
  • the sliders are mounted horizontally on both structural frames, so as to allow the supports to move towards the edge of the apparatus, to facilitate the arrangement of the objects to sterilize, thereby preventing the user from having to insert their hands to position the objects, running the risk of, on the one hand, placing the objects in an inappropriate position (mounted or very close to each other), and on the other hand, passing to carry the UV-C tubes and cause an accident.
  • the straight guides for moving the mobile component are arranged horizontally in the static component.
  • the two structural frames are arranged horizontally, spaced apart from each other, one upper and one lower; each one formed by at least two parallel horizontal straight profiles, between which upper and lower straight guides are mounted, for the displacement of the mobile component; and in at least one of the structural frames, horizontal sliders are mounted that receive, in a sliding manner, said support elements of the objects that are arranged vertically; which can also be slid towards the edge of the device to position the objects.
  • the mentioned mobile component that forms part of the apparatus of the present invention comprises a carrier frame in which the UV-C light-emitting tubes are mounted in a position parallel to each other; and at the same time, it comprises drive means that drive and allow the linear displacement of the mobile component, based on the static component.
  • the carrier frame is a rigid frame comprising at least two transverse profiles, parallel and spaced apart from each other; at least two longitudinal profiles, parallel and distanced from each other; mounting points for the UV-C light-emitting tubes arranged opposite each other on the carrier frame; where the carrier frame comprises an inner contour and an outer contour with four outer corners where bearings are mounted, which generate a sliding, stabilizing and anti-rotation effect of the frame during its displacement in the static component.
  • These mounting points are provided with mechanical and electrical connectors to mount the UV-C tubes between them.
  • the driving means comprise motors with a transmission gear and straight and fixed toothed guides on the static body, oriented perpendicular to the longitudinal elements of the carrier frame.
  • the toothed guides that form part of the drive means are mounted parallel to the lateral edges of the support, so that the supporting frame moves from the leading edge to the trailing edge of the media, and vice versa; thereby allowing the UV-C tubes to be parallel to the longitudinal axis of the supports and to move along the smallest dimension of said supports, that is, to move in a direction of displacement in the direction of the transverse axis of the support.
  • the aforementioned security cabinet comprises double perimeter walls forming a hermetic internal chamber where the components are housed; It comprises a front face provided with a hinged hatch for access to the inner chamber, also with double walls, and compartments outside the inner chamber to accommodate peripheral components of the device. Said hinged gate is associated with a safety lock that prevents its opening during the operation of the apparatus.
  • the double walls surrounding the inner chamber comprise an inner radiation reflective panel to increase the incident radiation on the surface of the objects to be sterilized.
  • the residual air purifying means comprise a hot air generator which, thanks to the high temperature it generates, is capable of decomposing the ozone used to Sanitization and treatment of non-volatile odors.
  • a hot air generator which, thanks to the high temperature it generates, is capable of decomposing the ozone used to Sanitization and treatment of non-volatile odors.
  • said ozone is provided through an ozone generator. It also includes an activated carbon filter associated with an air extractor that forces the evacuation of residual air.
  • the ozone generator and the hot air generator are preferably located in an upper area of the interior chamber, so that the flows go through the permeable supports thanks to the various openings or separations that they present, so that the ozone flow it can reach all objects arranged on all supports, upper and lower inside the apparatus; additionally, between each support and the inner panels of the double walls of the cabinet, a gap can be provided to allow side flows of circulation of ozone, hot air and exhaust flows to occur.
  • the carbon filter and the air extractor are located, preferably, in a lower part of the interior chamber, to favor the exit and forced passage of the air with ozone that has been descending through the supports with the objects, forcing it to go through the activated carbon filter that eliminates odours.
  • the electronic control component comprises an operation interface by means of a control panel that is arranged in the cabinet, a power source, means of connection between the operable components and a processor to implement at least one preconfigured operation program to operate the components. in a synchronized manner and ensure the application of at least a minimum dose of radiated energy at all points on the items to be sterilized.
  • the carrier frame for the UV-C light-emitting tubes is oriented vertically, arranging the UV-C light-emitting tubes horizontally and parallel to the longitudinal axis of the support of the objects; where said carrier frame moves in a bidirectional linear manner based on the static component, following a direction of displacement along the transverse axis of the object support, and vice versa; allowing the UV-C light-emitting tubes, when moving, to irradiate the entire surface of the objects evenly.
  • the irradiation coverage that is obtained allows the most extreme points of the objects with respect to an initial position of the irradiation source, to receive the same dose as that received by the points closest to the source in the same position. initial.
  • an optimum irradiation point is produced where the greatest efficiency occurs, formed in the area or fringe of the object that has the least distance from the source, with an angle of incidence perpendicular to the target surface.
  • those faces of the object that are oriented almost parallel to the path of the light receive a marginal or almost null irradiance; as well as in those areas of the objects where shadows are produced by the same adjacent objects.
  • the present invention provides the means to move said UV-C light-emitting tubes from end to end of the object support, following a linear path and at a determined speed in relation to the minimum and maximum distances of the object. source to the furthest points of the objects; so that, as the light source moves linearly, the high intensity irradiation target region changes, so that at some point in the path of the source, all points on the objects are a high intensity irradiation target region. High intensity; allowing those areas where shadows had initially been produced, to receive the same amount of irradiation as the rest of the areas.
  • Having a single tube for each face of the supports it allows to treat various objects, of different shapes, ensuring that all the faces of the object, including the lateral ones that are located close to the periphery of the support, are exposed to irradiation to achieve the same dose. than that received on the other faces of the objects.
  • the UV-C light-emitting tube that faces the underside of the support at a distance less than the distance from the upper tube, it is ensured that the irradiance interfered by the support itself is compensated thanks to this lower distance; thereby achieving that the lower surface of the object placed on the support receives the same dose as the rest of the surface.
  • the present invention allows the effect of total coverage to occur simultaneously in several objects at the same time, optimizing the process and making it efficient, since it is proposed that the device comprises at least one support, while the Multiple source of UV-C light emitting tubes, as they are all mounted on a single carrier frame, allows all of them to describe the same movement at the same speed and at the same distance from the support they radiate. Intending to propose a device with simple operation, which does not require a complex instruction to be operated, it is desirable that the user be faced as little as possible with having to program the operation.
  • the tubes will be arranged along the larger side of the support and to move in the direction of the smaller side, since the round trip is less while covering the largest extension of the support with the objects; shorter length zippers are required.
  • the tubes were oriented parallel to the minor axis of the support, the total coverage is less than cm2 per second, there are points further away from the source, the length of the total displacement path is greater, it takes more time to go and return, maintaining the same speed; Requires longer zipper length.
  • the size of the supports can allow the arrangement of at least one larger object, while, preferably, the trays have a size that allows several objects to be placed spaced apart from each other.
  • the objects to be sanitized can be of various types and belong to different areas; However, by way of example only, without limiting the scope of the present invention, personal protection objects can be mentioned in a medical environment, made of textile material or another type of material, such as protective aprons, bibs, pants, shirts, etc. masks, face shields, goggles, filtering masks, etc.
  • objects for general medical or hospital use such as medical instruments, sheets, towels, respiratory helmets, etc. Only, by way of example, may be mentioned objects such as goggles, helmets, non-disposable gloves and similar protective implements, of the type used in manufacturing or mining facilities.
  • Figure 1 shows a front isometric view of the apparatus, without the upper part of the cabinet to illustrate the internal components.
  • Figure 2 shows a front sectional view of the apparatus.
  • Figures 3a and 3b show a schematic top view of the apparatus according to different modalities of disposition of the mobile component.
  • Figure 4 shows a front sectional view of the apparatus showing the distances from the irradiance source tubes to the object supports.
  • Figure 5 shows a front sectional view of a second arrangement mode of the components.
  • Figure 6 shows a schematic top plan view of the support and the irradiance source.
  • Figure 7 shows a top plan view of a first embodiment of the supports for carrying the objects.
  • Figure 8 shows a top plan view of a second embodiment of the supports for carrying the objects.
  • Figure 9 shows a top plan view of a third embodiment of the supports for carrying the objects.
  • Figure 10 shows a front sectional view of a first modality of arrangement of the static component.
  • Figure 11 shows a front sectional view of a second modality of arrangement of the static component.
  • Figure 12 shows a partial isometric view of a first modality of arrangement of the static component.
  • Figure 13 shows a partial isometric view of a second embodiment of the static component.
  • Figure 14 shows a partial isometric view of the mobile component in relation to the static component.
  • Figure 15 shows a partial isometric view of the mobile component.
  • Figure 16 shows a partial isometric view of the mobile component with the drive means.
  • Figure 17 shows an isometric view of the toothed guide of the mobile component.
  • Figure 18 shows isometric view of the motor of the mobile component.
  • Figure 19 shows a partial isometric view of the mobile component arranged according to a second embodiment.
  • Figure 20 shows a front sectional view of the device where the cabinet can be seen.
  • Figure 21 shows a front isometric view of the cabinet.
  • Figure 22 shows a partial isometric view of the apparatus with the purifying means.
  • Figure 23 shows a frontal diagram of the arrangement of the tubes with respect to the supports.
  • Figure 24 shows a plan view of the displacement of the source with respect to the static component.
  • Figure 25 shows a frontal diagram of the initial position of the multiple source of irradiance with respect to the objects.
  • Figures 26a and 26b show a frontal diagram of the variation in the distance of the irradiance source in a first and a second position, respectively.
  • Figures 27a and 27b show a frontal diagram of the generation of shadows on objects according to a first and a second position of the irradiance source, respectively.
  • Figures 28a, 28b and 28c show an upper diagram of the modification of the high intensity zone according to a first, second and third position of the irradiance source, respectively.
  • the invention refers to a sterilizing device for objects using UV-C light irradiation and an ozone flow that, in addition to sanitizing, allows the elimination of non-volatile odors, where the device is capable of optimizing the sterilization process by reducing the necessary time of exposure to irradiation of several objects at the same time and to ensure that the entire surface of the objects receives a minimum necessary dose of sterilization within the reduced period of time, and to provide purification of the residual air at the end of each operating cycle.
  • the apparatus (1) comprises a multiple source (20) of sterilizing irradiation formed by multiple UV-C light-emitting tubes (201) mounted on a mobile component (30) that moves linearly. in relation to a static component (40) that houses at least one support (41) to position the objects (A) to be treated, said supports (41) being transparent to UV-C irradiation and permeable to ozone fluxes.
  • each of the supports (41) comprise a first irradiable face (42), opposite a second irradiable face (43); and the multiple source (20) of sterilizing irradiation, has at least one first tube (21) and at least one second tube (22) emitting UV-C light parallel to each other.
  • the number of emitting tubes of UV-C irradiation of the multiple source (20) of irradiation is in a numerical relationship with respect to the supports (41) of the objects, where for each support (41), two emitting tubes of UV-C irradiation, each positioned parallel to and irradiating respective first (42) and second (43) irradiable faces of the support (41).
  • this mobile component (30) allows the UV-C light emitting tubes (201) to be moved in the direction of a transverse axis (y) of the supports ( 41), or in the direction of a longitudinal axis (x) of the supports (41), as illustrated in FIG. 3b; preferably being that it moves them in the direction of the transverse axis (y).
  • the mobile component (30) allows moving said first tubes (21) emitting UV-C irradiation, maintaining a first distance (di), with respect to the mentioned first irradiable face ( 42) of the supports (41), and in turn, keeping said second tubes (22), according to a second distance (d2), with respect to the mentioned second irradiable face (43) of the same supports (41).
  • said second distance (d2) maintained by a second UV-C light emitting tube (22) with respect to the second irradiable face (43) of a support (41), is less than said first distance (di) of a first UV-C light emitting tube (21) with respect to the first irradiable face (42) of the same support (41).
  • said second distance (d2) maintained by a second UV-C light emitting tube (22) with respect to the second irradiable face (43) of a support (41 ), is the same as said first distance (di) of a first UV-C light emitting tube (21) with respect to the first irradiable face (42) of the same support (41).
  • the support (41) of the objects comprises a perimeter contour between both first (42) and second (43) irradiable faces, defined by a front edge (44), opposite to an edge rear (45), between which side edges (46) opposite each other extend.
  • said front edges (44) and rear edge (45) are parallel to the longitudinal axis (x) of the support (41).
  • said front edge (44) and rear edge (45) extend parallel to the transverse axis (y) of the support (41).
  • the support (41) comprises a rigid perimeter frame (47) that supports and tensions a woven structure (48) where the objects (A) are positioned, forming a grid regular open, based on filamentary elements of transparent material to UV-C irradiation, where the open grid generates multiple openings (49) that allow permeability to an ozone flow.
  • the transparent material to UV-C irradiation of the woven filament elements, which make up the grid is a polymeric material.
  • the support (41') comprises a rigid perimeter frame (47') that supports a laminar structure (48') where the elements are positioned. objects (A), with multiple perforations (49') to provide permeability to an ozone flow.
  • the support (41") of the objects comprises a rigid perimeter frame (47") that holds multiple rigid linear elements (48") forming a support grid , where said elements are spaced from each other forming interstices (49”) to provide permeability to an ozone flow.
  • the support (41) is made of a material that is transparent to UV-C irradiation to allow the lower surface of the treated object (A), which is in contact with the first face (42) of said support (41), receives sufficient irradiation to complete a minimum dose necessary for its sterilization, said material being transparent to UV-C irradiation, selectable between quartz, glass or an alloy of glass and quartz.
  • the supports (41) of the objects (A) are positioned horizontally in the static component (40), constituting its first irradiable face (42), as an upper surface of support where the objects (A) to be sterilized are placed; while its second opposite irradiable face (43) is constituted as the lower surface of the support.
  • the supports (41) of the objects are positioned vertically, constituting their first irradiable face (42) as a first lateral surface, while their second face opposite irradiable (43), is constituted as a second lateral surface; said support (41) being formed as hanging elements from which objects are attached in a hanging manner.
  • the static component (40) comprises at least two structural frames (401), arranged vertically and spaced apart, between which side straight guides (402) are mounted for moving the mobile component (30), and at the same time, horizontal sliders (403) are mounted that receive, in a sliding manner, said supports (41) that are arranged horizontally.
  • the static component (40) comprises at least two structural frames (401), arranged horizontally at a distance from each other, between which upper and lower straight guides (402) are mounted. lower, for the movement of the mobile component (30); while in, at least one, of the structural frames (401), horizontal sliders (403) are mounted that receive, in a sliding manner, said support elements (41) of the objects that are arranged vertically (not illustrated ).
  • the mobile component (30) comprises a carrier frame (31) in which the UV-C light-emitting tubes (201) are mounted; and drive means (301) are mounted that drive and allow the linear movement of the mobile component (30), based on the static component (40).
  • the carrier frame (31) is a rigid frame comprising at least two transverse profiles (32), parallel and spaced apart from each other; and at least two longitudinal profiles (33), parallel and spaced from each other, comprising mounting points (34) provided with mechanical and electrical connectors to mount the UV-C tubes (201) between them; where the carrier frame (31) comprises an outer contour (35) with four corners (36) where bearings (305) are arranged.
  • the driving means (301) comprise motors (302) with a transmission gear (303), toothed guides (304) fixed on the static body (40).
  • Each of the straight toothed guides (304) are arranged fixed on the static component (40), oriented perpendicular to the carrier frame (31).
  • the carrier frame (31) of the UV-C light emitting tubes (201) is oriented vertically, arranging the tubes parallel to each other and vertically; where said carrier frame (31) moves in a bidirectional linear manner based on the toothed guides (304) fixed on the static component (40).
  • the apparatus (1) furthermore, comprises a security cabinet (50) containing the different components; residual air purifying means (60); an ozone flow generator (70); and an electronic apparatus control component (80) (not illustrated).
  • the aforementioned security cabinet (50) comprises double perimeter walls (51) forming an internal hermetic chamber (52); it comprises a front face (53) provided with a hinged hatch (54) for access to the internal chamber, also with double walls; and external compartments (55) for arranging peripheral components of the apparatus (1).
  • the hinged hatch (54) is associated with a safety lock (not shown) that prevents it from opening during appliance operation.
  • the double walls (51) surrounding the internal chamber (52) comprise an inner panel (56) reflecting radiation.
  • the residual air purifying means (60) comprise a hot air generator (61) that decomposes the ozone provided by the ozone generator (70); and an activated carbon filter (62) associated with an air extractor (63) that forces the evacuation of residual air.
  • the ozone generator (70) and the air generator hot (61) are located in an upper area of the internal chamber (52) of the cabinet (50); while the activated carbon filter (62) and the air extractor (63) are located in a lower part of the internal chamber (52) of the cabinet (50).
  • the electronic control component comprises an operation interface through a control panel (80), shown in FIG. 21, a power source, connection means between the operable components, a central processing unit to implement at least one program preconfigured operating mode to operate the components in a synchronized manner and ensure the application of at least a minimum dose of radiated energy at all points on the items to be sterilized.
  • the mobile component (30) is oriented vertically, arranging said UV-C radiation emitting tubes (201) horizontally and parallel to the longitudinal axis (x) of the supports (41) of the objects, above and below it.
  • said mobile component (30) moves along a bidirectional linear path (R) based on the static component (40), following a direction of movement along the transverse axis (and ) of the support (41), and vice versa.
  • the present invention provides the means to mobilize said UV-C irradiance source (20), which, as illustrated in the embodiment shown in FIG.28a, FIG.28b and FIG.28c, moves in the mobile component (30) from the front edge (44) of the support towards its rear edge (45) and vice versa, following a linear path, so that, as the source (20) of UV-C light moves, the target region of high intensity irradiation (E) changes, so that at some point in the path of the source (20), all the points of the objects are a region of high intensity irradiation .

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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)
  • Apparatus For Disinfection Or Sterilisation (AREA)

Abstract

La présente invention concerne un appareil stérilisateur (1) d'objets par application de lumière UV-C et d'un flux d'ozone, capable d'optimiser la stérilisation par la réduction du temps d'exposition de divers objets en même temps et d'assurer que toute la surface reçoive une dose minimale nécessaire de stérilisation, avec la purification de l'air résiduel à la fin de chaque cycle. L'appareil comprend une source multiple (20) d'irradiation de stérilisation qui comporte au moins un premier tube (21) et au moins un second tube (22) qui émettent de la lumière UV-C et sont parallèles entre eux; la source multiple (20) d'irradiation est montée sur un constituant mobile (30) qui se déplace de manière linéaire par rapport à un constituant statique (40) qui comprend au moins un support (41) pour positionner les objets à traiter, transparent à l'irradiation UV-C et perméable aux flux d'ozone, et comprenant une première face irradiable (42) opposée à une seconde face irradiable (43); lequel constituant mobile (30) déplace, simultanément, les deux tubes émetteurs de lumière UV-C, maintenant ledit premier tube (21), à une première distance (d1), par rapport à ladite première face irradiable (42), du support (41) et ledit second tube (22) à une seconde distance (d2) par rapport à ladite seconde face irradiable (43) dudit support (41).
PCT/CL2020/050184 2020-12-18 2020-12-18 Appareil stérilisateur d'objets par application de lumière uv-c WO2022126292A1 (fr)

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DE102008063886A1 (de) * 2008-12-19 2010-07-01 Dorma Gmbh + Co. Kg Desinfektionseinrichtung mit einer UV-Strahlungsquelle
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CN207220511U (zh) * 2017-04-10 2018-04-13 江苏省疾病预防控制中心 一种微生物实验室用消毒衣柜
CN107961386A (zh) * 2017-05-19 2018-04-27 宁波方太厨具有限公司 一种消毒柜
CN107970465A (zh) * 2017-05-19 2018-05-01 宁波方太厨具有限公司 一种消毒柜
CN208877390U (zh) * 2018-04-16 2019-05-21 华帝股份有限公司 一种高效消毒柜
CN209154590U (zh) * 2017-08-25 2019-07-26 华帝股份有限公司 一种消毒柜
CN110585902A (zh) * 2019-08-26 2019-12-20 宁波方太厨具有限公司 一种消毒柜及应用有该消毒柜的消毒方法
CN211533284U (zh) * 2019-08-19 2020-09-22 甘肃佰阁丽家具有限公司 一种杀菌除湿的衣柜

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102008063886A1 (de) * 2008-12-19 2010-07-01 Dorma Gmbh + Co. Kg Desinfektionseinrichtung mit einer UV-Strahlungsquelle
US20150118107A1 (en) * 2013-06-20 2015-04-30 Nosocom Solutions, Inc. Method and apparatus for the disinfection or sterilization of medical apparel and accessories
CN207220511U (zh) * 2017-04-10 2018-04-13 江苏省疾病预防控制中心 一种微生物实验室用消毒衣柜
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CN107970465A (zh) * 2017-05-19 2018-05-01 宁波方太厨具有限公司 一种消毒柜
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CN209154590U (zh) * 2017-08-25 2019-07-26 华帝股份有限公司 一种消毒柜
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