WO2022260260A1

WO2022260260A1 - Antivirus filter and purifying apparatus comprising same

Info

Publication number: WO2022260260A1
Application number: PCT/KR2022/005211
Authority: WO
Inventors: 정용원; 김세령; 정원철; 권도형; 김새미; 김성원; 박수민; 박희진; 유성윤
Original assignee: 삼성전자 주식회사; 주식회사 엔투셀
Priority date: 2021-06-11
Filing date: 2022-04-11
Publication date: 2022-12-15
Also published as: KR20220167044A

Abstract

An antivirus filter and/or a purifying apparatus comprising same, according to various embodiments disclosed in the present document, comprise: a permeable support layer formed in a predetermined shape; and a filter layer formed on at least one surface of the support layer, wherein the filter layer comprises nanofibers containing an amorphous metal oxide substance on the basis of at least one from among copper oxide, gold, silver and iron oxide, and thus may give rise to an oxidation/reduction reaction or generate reactive oxygen species by coming into contact with a virus. Various other embodiments are possible.

Description

Antiviral filter and purification device including the same

Various embodiments disclosed in this document relate to a filter for purifying air or water quality, for example, to an antiviral filter and a purification device including the same.

Due to environmental deterioration such as air pollution by high-concentration fine dust and/or yellow dust or water pollution by various wastes and chemicals, and infectious diseases including bacteria and viruses, various products for hygiene management and cleanliness maintenance are appearing. For example, purification devices for purifying indoor air or drinking water, such as air purifiers or water purifiers, have appeared, and the use of the purification devices is expanding throughout daily life.

The purification device may collect, adsorb, or remove contaminant particles by including a non-woven filter or an electrostatic filter, and/or may remove bacteria and/or viruses by including an activated carbon or metal oxide filter. For example, contaminants, various bacteria and/or viruses may be removed by the filter while air or drinking water passes through the filter. Such a purification device may generally be installed in a user's living/office space or various living facilities where a large number of people come and go, and may be provided in the form of a personal purification device such as a mask.

Non-woven fabrics or electrostatic filters provide a purification function by adsorbing and collecting pollutant particles, and may require periodic maintenance, but it may be difficult to provide a purification function for bacteria or viruses. have. Filters based on nanofibers may be more useful than nonwoven fabrics or electrostatic filters in removing finer particles, and may be used to remove bacteria or viruses. For this reason, in a purification device such as an air purifier, particles of pollutants are first adsorbed and collected using a non-woven fabric or an electrostatic filter, and then polluted air or water is further purified using filter(s) based on nanofibers. can Although various filters that provide a function of removing various bacteria or viruses in a purification device have been proposed, considerable time is required to remove bacteria or viruses, so the effectiveness of the purification function may be substantially low.

Various embodiments disclosed in this document may provide an antiviral filter that is easy to apply to a personal purification device such as a mask and/or household appliances.

Various embodiments disclosed in this document may provide an antiviral filter with improved purification performance against bacteria or viruses and/or a purification device including the same.

According to various embodiments disclosed in this document, an antiviral filter and/or a purifying device including the same includes a breathable support layer molded into a designated shape, and a filter layer formed on at least one surface of the support layer, and the filter layer By including nanofibers to which an amorphous metal oxide component based on at least one of silver, copper oxide (CuOx), gold (Au), silver (Ag), or iron oxide (FeOx) is added, oxidation/reduction reaction occurs in contact with a virus can be configured to generate or generate reactive oxygen species.

According to various embodiments disclosed in this document, a purification device is a filter body including a support layer, a filter layer formed on at least one surface of the support layer, and a protective layer disposed to face the support layer with the filter layer interposed therebetween, and the filter body configured to pass through, wherein the filter layer includes nanofibers to which an amorphous metal oxide component based on at least one of copper oxide, gold, silver, or iron oxide is added, thereby reducing oxidation/reduction in contact with viruses. It can be configured to react or generate reactive oxygen species.

According to various embodiments disclosed in this document, the antiviral filter includes a support layer and a filter layer, wherein the filter layer includes nanofibers to which an amorphous metal oxide is added, which can be useful for removing or inactivating bacteria or viruses. have. In some embodiments, the amorphous metal oxide (eg, amorphous copper oxide) may increase the removal or inactivation efficiency of viruses by expanding the surface area of the filter layer or nanofibers. In one embodiment, the support layer can adsorb or collect pollutant particles, and can be easily applied to household appliances such as personal purification devices such as masks or air purifiers (or water purifiers) in combination with the filter layer. In another embodiment, the filter layer or the nanofibers of the filter layer may promote the reduction reaction of metal oxide by including a photocatalytic component, thereby improving the durability of antiviral performance, for example, the lifespan of the antiviral filter. . In addition, various effects identified directly or indirectly through this document may be provided.

1 is an exploded perspective view illustrating an antiviral filter according to various embodiments disclosed herein.

2 is a graph illustrating an X-ray diffraction test pattern of a filter layer in an antiviral filter according to various embodiments disclosed herein.

3 is a graph illustrating the results of measuring the performance of an antiviral filter according to various embodiments disclosed herein.

4 is a purifying device to which an antiviral filter according to various embodiments disclosed herein is applied, and is a diagram illustrating a mask.

5 is a diagram illustrating an air purifier as a purification device to which an antiviral filter according to various embodiments disclosed herein is applied.

6 is an exploded perspective view illustrating the air purifier of FIG. 5;

Electronic devices according to various embodiments disclosed in this document may be devices of various types. The electronic device may include, for example, a portable communication device (eg, a smart phone), a computer device, a portable multimedia device, a portable medical device, a camera, a wearable device, or a home appliance. An electronic device according to an embodiment of the present document is not limited to the aforementioned devices.

Various embodiments of this document and terms used therein are not intended to limit the technical features described in this document to specific embodiments, but should be understood to include various modifications, equivalents, or substitutes of the embodiments. In connection with the description of the drawings, like reference numbers may be used for like or related elements. The singular form of a noun corresponding to an item may include one item or a plurality of items, unless the relevant context clearly dictates otherwise. In this document, "A or B", "at least one of A and B", "at least one of A or B", "A, B or C", "at least one of A, B and C", and "A Each of the phrases such as "at least one of , B, or C" may include any one of the items listed together in that phrase, or all possible combinations thereof. Terms such as "first", "second", or "first" or "secondary" may simply be used to distinguish that component from other corresponding components, and may refer to that component in other respects (eg, importance or order) is not limited. A (e.g. first) component is said to be “coupled” or “connected” to another (e.g. second) component, with or without the terms “functionally” or “communicatively”. When mentioned, it means that the certain component may be connected to the other component directly (eg by wire), wirelessly, or through a third component.

The term "module" used in various embodiments of this document may include a unit implemented in hardware, software, or firmware, and is interchangeably interchangeable with terms such as, for example, logic, logical blocks, parts, or circuits. can be used as A module may be an integrally constructed component or a minimal unit of components or a portion thereof that performs one or more functions. For example, according to one embodiment, the module may be implemented in the form of an application-specific integrated circuit (ASIC).

Various embodiments of this document are software (eg, a program) including one or more instructions stored in a storage medium (eg, internal memory or external memory) readable by a machine (eg, an electronic device). can be implemented as For example, a processor (eg, a processor) of a device (eg, an electronic device) may call at least one command among one or more instructions stored from a storage medium and execute it. This enables the device to be operated to perform at least one function according to the at least one command invoked. The one or more instructions may include code generated by a compiler or code executable by an interpreter. The device-readable storage medium may be provided in the form of a non-transitory storage medium. Here, 'non-temporary' only means that the storage medium is a tangible device and does not contain signals (e.g., electromagnetic waves), and this term refers to the case where data is stored semi-permanently in the storage medium. It does not discriminate when it is temporarily stored.

According to one embodiment, the method according to various embodiments disclosed in this document may be included and provided in a computer program product. Computer program products may be traded between sellers and buyers as commodities. A computer program product is distributed in the form of a device-readable storage medium (eg compact disc read only memory (CD-ROM)), or through an application store (eg Play Store ^TM ) or between two user devices ( It can be distributed (eg downloaded or uploaded) online, directly between smartphones. In the case of online distribution, at least part of the computer program product may be temporarily stored or temporarily created in a device-readable storage medium such as a manufacturer's server, an application store server, or a relay server's memory.

According to various embodiments, each component (eg, module or program) of the above-described components may include a single object or a plurality of objects, and some of the plurality of objects may be separately disposed from other components. have. According to various embodiments, one or more components or operations among the aforementioned corresponding components may be omitted, or one or more other components or operations may be added. Alternatively or additionally, a plurality of components (eg modules or programs) may be integrated into a single component. In this case, the integrated component may perform one or more functions of each of the plurality of components identically or similarly to those performed by a corresponding component of the plurality of components prior to the integration. . According to various embodiments, the actions performed by a module, program, or other component are executed sequentially, in parallel, iteratively, or heuristically, or one or more of the actions are executed in a different order, or omitted. or one or more other actions may be added.

1 is an exploded perspective view showing an antivirus filter 100 according to various embodiments disclosed in this document.

Referring to FIG. 1, the antiviral filter 100 may include a support layer 101 and a filter layer 102(s) disposed on at least one surface of the support layer 101, and according to an embodiment, the filter layer ( A protective layer 103 disposed to face the support layer 101 with the 102 therebetween may be further included. In some embodiments, the protective layer 103 may be manufactured to have substantially the same material, thickness, and/or area as the support layer 101 . In looking at the various embodiments disclosed in this document, the support layer 101 and the protective layer 103 are exemplified as components different from the filter layer 102, but this is for convenience of description, and the support layer 101 And the protective layer 103 can function as an additional filter in combination with the filter layer 102 . For example, the filter layer 102 may provide a filter function for removing bacteria or viruses, and the support layer 101 and/or the protective layer 103 may contain contaminants having particles larger than bacteria or viruses (eg, dust). ) can function as a filter that removes For example, the support layer 101 and/or the protective layer 103 may adsorb or collect dust or organic compounds floating in the air.

According to various embodiments, the filter layer 102 may be provided on both sides of the support layer 101 , and in this case, a plurality of protective layers 103 may be provided to protect the filter layer 102 . In one embodiment, an additional filter layer and/or an additional protective layer, not shown, may be further disposed on the outer surface of the protective layer 103 of FIG. 1, and the product to which the antiviral filter 100 is applied, for example, Personal purification devices such as masks or protection equipment (eg, the mask 200 of FIG. 4 ) or household appliances such as air purifiers and water purifiers (eg, the purification device 300 of FIG. 5 or 6) Accordingly, the number of filter layers 102 and protective layers 103 may be appropriately selected.

According to various embodiments, the support layer 101 (and/or the protective layer 103) is a layer that substantially determines the shape of the antiviral filter 100, and is made of a breathable mesh, nonwoven fabric, or It can be made of at least one of the condensable fibers (felt). In some embodiments, the support layer 101 (and/or the protective layer 103) may include a polymer material or a metal material, and depending on the included material, contaminants may be collected using static electricity. In another embodiment, when the antiviral filter 100 is applied to a personal cleansing device (or protective gear) such as a mask, the support layer 101 (and/or the protective layer 103) is a filter body (e.g., FIG. 4 ). It may be provided as an outer material or lining of the filter body 201. In some embodiments, since the outer fabric or lining of the mask or filter body may directly contact the user's skin, a coating layer made of a material harmless to the human body is additionally provided on the outer surface of the support layer 101 or the protective layer 103 to It can function as a lining.

According to various embodiments, the filter layer 102 may be made of nanofibers including an amorphous metal oxide. An enlarged view indicated by 'E' in FIG. 1 illustrates the nanofiber structure of the filter layer 102 . For example, the filter layer 102 may be formed on at least one surface of a substrate (eg, the support layer 101) by mixing a metal precursor with a polymer solution and electrospinning. In some embodiments, in forming the filter layer 102, the support layer 101 may be utilized as a substrate. For example, the filter layer 102 may be formed on the surface of the support layer 101 by electrospinning with a mixture of a polymer liquid and a metal precursor. In another embodiment, the filter layer 102 may be formed on a separate substrate and attached to at least one surface of the support layer 101 by an adhesive layer 191 . Depending on the embodiment, the adhesive layer 191 may be selectively provided between the support layer 101 and the filter layer 102 and/or between the filter layer 102 and the protective layer 103 . According to one embodiment, the amorphous metal oxide is based on at least one of copper oxide (CuOx), gold (Au), silver (Ag) and/or iron oxide (FeOx), and the apparent thickness of the filter layer 102 Compared to the area, the surface area of the filter layer 102 that can contact bacteria or viruses can be increased.

FIG. 2 illustrates an X-ray diffraction test pattern of a filter layer (eg, the filter layer 102 of FIG. 1) in an antiviral filter (eg, the antiviral filter 100 of FIG. 1) according to various embodiments disclosed herein. is a graph that

In FIG. 2, the graph indicated by 'C' illustrates the X-ray diffraction test result of commercially available crystalline copper oxide, and the graph indicated by 'A' shows the antiviral filter (100 The X-ray diffraction test result of the filter layer 102 (eg, amorphous copper oxide) of ) is illustrated. Referring further to FIG. 2 , the amorphous metal oxide may have low crystallinity with a subminiature size of an atomic cluster level, and as such amorphous metal oxide is formed in the filter layer 102 and/or nanofibers, the filter layer ( 102) may be expanded. For example, when having the same thickness and area, a filter layer 102 based on amorphous metal oxide may contact and inactivate more viruses than a filter layer based on crystalline copper oxide. In one embodiment, the antiviral filter 100 (eg, metal oxide) is expected to inactivate viruses by causing oxidation/reduction reactions or generating reactive oxygen species in contact with viruses.

Referring back to FIG. 1, in manufacturing the filter layer 102, the polymer liquid is PAN (polyacrylonitrile) in a solvent such as dimethylformamide, water and / or acetone, PVDF ( At least one of polyvinylidene fluoride (PTFE), polytetrafluoroethylene (PTFE), cellulose, polyvinyl alcohol (PVA), or polyvinyl alcohol-polyacrylic acid (PVA-PAA) may be a dissolved liquid. In one embodiment, when the amorphous metal oxide contained in the filter layer 102 or the nanofibers is amorphous copper oxide, a metal precursor such as CuCl ₂ , CuSO ₄ , Cu(NO ₃ ) ₂ , or Cu acetate is mixed in the polymer liquid. can The type or content of the polymer liquid or metal precursor may be appropriately selected according to the specifications of the antiviral filter 100 to be actually manufactured. In the process of forming the filter layer 102 with the mixture of the polymer liquid and the metal precursor and then drying, the metal component of the nanofibers may combine with oxygen to form an amorphous metal oxide.

According to various embodiments, the nanofibers forming the filter layer 102 may have a diameter of about 1 μm or less, and the filter layer 102 may have a thickness of about 100 μm or less. In the process of forming and drying the filter layer 102 by electrospinning the metal precursor in a mixed state with the polymer liquid, an amorphous metal oxide (eg, amorphous copper oxide) may be contained in the nanofibers or the filter layer. In one embodiment, in the case of copper oxide, when the particle size is approximately 5 nm or less, it may have an amorphous characteristic and may not be observed through X-ray diffraction inspection or electron microscopy. As mentioned above, by including the amorphous metal oxide, the area capable of contacting viruses in the nanofibers or filter layer 102 may be expanded, and oxidation/reduction reactivity may be promoted to improve antiviral performance.

3 is a graph illustrating the results of measuring the performance of an antivirus filter (eg, the antivirus filter 100 of FIG. 1 ) according to various embodiments disclosed herein.

The performance of the antiviral filter 100 was measured by quantifying the bacteriophage virus by a plaque assay method, and when 1.0 ml of the virus at a concentration of 4×10 ⁵ PFU/ml was inoculated, the virus concentration was reduced to -2.5 log, the detection limit. The time taken was measured, and a nanofiber filter having a size of 1.9×1.9 cm ² (eg, the filter layer 102 in FIG. 1) was used. In FIG. 3, the graph of 'S1' illustrates the performance of PAN and Cu(II)-based nanofiber filters, and the graph of 'S2' illustrates the performance of PAN and Cu(I) (e.g., crystalline copper oxide)-based nanofiber filters. Illustrates the performance, 'S3' illustrates the performance of a nanofiber filter (eg, a filter including amorphous copper oxide as the filter layer 102 of FIG. 1) according to various embodiments disclosed in this document, and 'S4' illustrates the performance The performance of nanofiber filters based on PAN without metal oxides is illustrated.

Referring to the 'S4' and 'S1' graphs in FIG. 3, in the case of the metal oxide-free or Cu(II)-based nanofiber filter, it can be seen that there is substantially no change in the concentration of the virus for up to 25 hours after virus inoculation. can Referring to the 'S2' graph, it can be seen that the nanofiber filter containing crystalline copper oxide can be used to remove the antiviral performance, and it takes about 12 hours for the virus concentration to decrease to -2.5 log. Referring to the 'S3' graph, it can be seen that the nanofiber filter containing amorphous CuOx takes about 1 hour to reduce the virus concentration to -2.5 log under the same experimental conditions. For example, it was confirmed that the antiviral filter (eg, the antiviral filter 100 of FIG. 1) according to various embodiments disclosed in this document efficiently removes or inactivates bacteria or viruses.

According to various embodiments, the nanofiber or filter layer 102 may further include a photocatalytic component such as titanium dioxide (TiO ₂ ) or zinc oxide (ZnO). Amorphous copper oxide (CuOx) included in the nanofiber or filter layer 102 is oxidized to Cu(II), which has no antiviral performance after inactivating viruses or forming reactive oxygen species, and the photocatalytic component is sensitive to light to generate electron-hole pairs, and Cu(II) can be reduced to Cu(I) by combining with electrons generated by the photocatalytic component. According to one embodiment, the higher the virus concentration or the longer the virus exposure time, the lower the antiviral performance of the nanofiber or filter layer 102 may be. In an environment where the total amount of copper components in the filter layer 102 is specified, as the virus is exposed, the Cu(II) content may increase and the Cu(I) content may decrease. In various embodiments disclosed in this document, by further including a photocatalytic component added to the nanofibers or filter layer 102, a metal component (eg, Cu(II)) oxidized with a virus can be reduced to Cu(I). Through this, it is possible to prevent the performance or lifespan of the antiviral filter 100 from deteriorating. In some embodiments, when the antiviral filter 100 of FIG. 1 is used in a purification device such as an air purifier or water purifier, the purification device is a light source (eg, the light source 329 of FIG. 6) radiating light to the antiviral filter. ) may be included.

4 is a diagram illustrating a mask 200 as a purification device to which an antiviral filter (eg, the antiviral filter 100 of FIG. 1 ) according to various embodiments disclosed herein is applied.

The antiviral filter 100 according to various embodiments disclosed in this document may be used in a personal purification device or protective equipment such as a mask 200. Referring to FIG. 4 , the mask 200 may include a filter body 201 and at least one band or string 202 extending from the filter body 201 . The band or string 202 may be attached to the user's ear or head so that the filter body 201 can be worn on the user's body (face).

According to various embodiments, the filter body 201 may have a size and shape capable of covering the user's mouth and nose, and includes an antiviral filter 212 disposed between the outer fabric 211 and the lining 213. can do. In some embodiments, outer fabric 211 (and/or lining 213 ) may be either support layer 101 or protective layer 103 of FIG. 1 . In this case, the antiviral filter 212 of FIG. 2 may be substantially implemented by the filter layer 102 of FIG. 1 . For example, the antiviral filter 100 of FIG. 1 may itself be manufactured in an appropriate shape to form the filter body 201. According to one embodiment, when a user breathes, the air inhaled from the outside substantially passes through the filter body 201 or the antiviral filter 212, and suspended substances in the air are removed from the outer fabric 211 or the support layer 101. ) (or the protective layer 103), and bacteria or viruses can be at least partially removed while passing through the filter layer 102. In another embodiment, as described above, the filter layer 102 or nanofibers of the filter layer 102 may effectively remove bacteria or viruses when air passes therethrough by including amorphous metal oxide.

5 is a diagram illustrating an air purifier as a purification device 300 to which an antiviral filter (eg, the antiviral filter 100 of FIG. 1 ) according to various embodiments disclosed herein is applied. 6 is an exploded perspective view illustrating the air purifier of FIG. 5;

5 and 6, the purification device 300 including the antiviral filter 100 according to various embodiments disclosed in this document is, for example, an air purifier, installed in a building such as a general home or an office. and household appliances that provide a function of purifying the air. The air purifier can collect or remove dust or gas floating in the air, and can remove or inactivate bacteria or viruses according to embodiments. The purification device 300 includes a blower 331 so as to circulate the air in the indoor space and pass through

various filters

321 , 323 , and 325 . Depending on the embodiment, the purification device 300 may further include a temperature and humidity control function of indoor air. For example, the purifying device 300 may be a home appliance that includes functions of an air purifier, an air conditioner, and/or a humidifier, or is selectively combined therewith. In some embodiments, antiviral filters according to various embodiments disclosed herein are mounted in water purifiers, refrigerators, kimchi refrigerators, washing machines, dryers, clothing management devices, shoe closets, closets, septic tanks and/or air conditioning systems, thereby deodorizing and antibacterial. and/or antiviral function.

According to various embodiments, the purification device 300 includes a housing 301 providing an internal space while forming an exterior, a suction port 313 formed on one side of the housing 301 and sucking air, and the inside of the housing 301. It may include

outlets

315a and 315b for discharging purified air introduced into the air outlet, an input unit 317 for inputting a user command, and

display units

319a and 319b for displaying an operating state of the purifier 300. .

According to various embodiments, the housing 301 may include a body 311b, a front cover 311a and an upper cover 311c that can be coupled to the body 311b. In the housing 301, some of the above-mentioned components may be omitted, or one or more other components may be additionally added. In FIG. 6, a configuration in which the front cover 311a or the upper cover 311c is detachable from the body 311b is shown, but may be integrally formed otherwise. In addition, application of various embodiments may be possible.

According to various embodiments, the number and location of the inlets 313 and

outlets

315a and 315b are not limited to any particular embodiment. 5 or 6 shows that the inlet 313 is formed in the front cover 311a of the housing 301, and the first and

second outlets

315a and 315b are respectively formed in the front cover 311a and the top cover 311c. Formed is shown, but is not necessarily limited thereto.

According to various embodiments, the input unit 317 is a power button for turning on or off the purifying device 300, and a timer button for setting an operating time of the purifying device 300. , In order to prevent erroneous operation of the input unit, a lock button for limiting operation of the input unit may be included. In addition, buttons for inputting various control information of the purification device 300 may be included. At this time, the input unit 317 may adopt a push switch method that generates an input signal through a user's pressure or a touch switch method that generates an input signal through a touch of a user's body part. have. If the input unit 317 adopts a touch switch method, the input unit 317 may be implemented integrally with the display unit 319a.

According to various embodiments, the

display units

319a and 319b may display information about the state of the purification device 300 . For example, information on the degree of contamination of the

filters

321, 323, and 325, information on replacement or cleaning timing of the

filters

321, 323, and 325, information on the state of the

filters

321, 323, and 325 (eg, accumulation number of days of use or cumulative use time), information on the current operating state (eg, information on the sensed air quality, blowing speed or direction) may be displayed. In one embodiment, such information may be provided through the

display units

319a and 319b or through another electronic device (eg, a smart phone) linked to the purification device 300 . In another embodiment, the

display units

319a and 319b may be disposed at arbitrary positions on the housing 301 as long as they are easily visible to the user. In FIG. 5 or 6, as the

display units

319a and 319b, the display unit 319a disposed on the upper cover 311c and the display unit 115 disposed on the main body 311b are exemplified, but various embodiments disclosed in this document Note that it is not limited to the configuration shown in the drawings.

According to various embodiments, the purification device 300 includes filters, for example, a pre-filter 321, a HEPA filter 323, and an antiviral filter 325 (eg, the antiviral filter 100 of FIG. 1 ). )) and a blowing fan 331. In some embodiments, when the antiviral filter 325 (eg, the filter layer 102 of FIG. 1 or the nanofibers) includes a photocatalytic component, the purification device 300 may further include a light source 329 . Inside the housing 301, the light source 329 may be arranged or set to emit light to the antiviral filter 325. In some embodiments, the purification device 300 is configured to perform an operation for driving the blowing fan 331 and/or irradiating the light source 329 (eg, recycling the antiviral filter 325). A controller 335 may be included, and a sensor 333 for detecting air quality inside the purification device 300 may be included.

According to various embodiments, the pre-filter 321 is a component for filtering out relatively large dust particles among suspended matter or foreign substances in the air and may be disposed closest to the inlet 313 . The HEPA filter 323 may be disposed behind the pre-filter 321 to filter out fine dust that is not filtered by the pre-filter 321 . In some embodiments, the support layer 101 and/or the protective layer 103 of the antiviral filter 323 (eg, the antiviral filter 100 of FIG. 1) is made of substantially the same material or structure as the HEPA filter 323. can have According to one embodiment, the pre-filter 321 may primarily filter out dust, and the pre-filter 321 may filter out dust secondarily through the HEPA filter 323 having relatively higher performance. Here, the HEPA filter 323 may be made of, for example, glass fibers. Although not shown in the figure, a deodorization filter including activated carbon may be further included between the pre-filter 321 and the HEPA filter 323 or behind the HEPA filter 323. The arrangement order of the filters may be as shown in FIG. 2, and it is also possible to arrange them in a different order. Alternatively, it is also possible to omit any one of the

filters

321, 323, and 325 (eg, the pre-filter 321).

According to various embodiments, the light source 329 may radiate light toward the antiviral filter 325 including a photocatalytic component. The photocatalytic component of the antiviral filter 325, for example, titanium dioxide or zinc oxide, reacts with light emitted from the light source 329 to generate electron-hole pairs, and the oxidation reaction with the virus generates Cu(II) can be reduced to Cu(I). In one embodiment, the light source 329 may be implemented as a device such as a fluorescent lamp or an incandescent lamp or an LED, and may emit at least one type of light among white light, red light, green light, blue light, ultraviolet light, visible light, and infrared light. In another embodiment, the light source 329 may be provided in the form of lens assemblies and assemblies such as Fresnel lenses, convex lenses, and concave lenses. Depending on the embodiment, at least one parameter of the brightness, temperature, color, light focusing, light emission timing, and light emission direction of the light source 329 may be controlled by the controller 335 .

According to various embodiments, the light source 329 may radiate light along the direction of air flow inside the housing 301, and the light emitted from the light source 329 may be passed through an antiviral filter 325, for example, It may reach the filter layer 102 by passing through the support layer 101 or the protective layer 103 of FIG. 1 . In another embodiment, the light source 329 may cause a photocatalytic reaction within the filter layer 102 by irradiating light in a direction opposite to the direction of air flow. Depending on the embodiment, the direction in which light is irradiated to the antiviral filter 325 or the filter layer 102 may be variously selected or combined.

According to various embodiments, the blowing fan 331 may introduce air outside the purifying device 300 into the housing 301 through the suction port 313 . The air sucked in by the blowing fan 331 passes through various filters (pre-filter 321, HEPA filter 323, anti-virus filter 325) and is purified through the

outlets

315a and 315b to the purifier (300) It can be discharged to the outside. The blowing fan 331 may operate under the control of the controller 335 and may control the flow of air under the control of the controller 335 .

According to various embodiments, the sensor 333 may be a sensor that measures air quality inside the purifying device 300 . For example, the type and concentration of substances contained in air may be measured using the sensor 333 . In some embodiments, the sensor 333 may be disposed in an inner space of the purification device 300, for example, at a position adjacent to

outlets

315a and 315b of the purification device 300. Alternatively, the sensor 333 may be disposed adjacent to the antiviral filter 325 in the inner space of the purification device 300 .

According to various embodiments, the controller 335 is for controlling the overall operation of the purifying device 300, and may control driving of the light source 329 and the blowing fan 331, for example. According to various embodiments disclosed in this document, the controller 335 controls the light source 329 and/or the blowing fan based on air quality information provided from the sensor 333 and an external electronic device (eg, a smart phone or smart home hub). (331) can be controlled. The controller 335 may be referred to in terms such as a processor. For example, it is possible to execute a program (software) to control at least one other component (eg, hardware or software component) of the purification device 300 connected to the controller 335, and to perform various data processing or operations. can be done According to one embodiment, as at least part of data processing or operation, the controller 335 (or processor) loads commands or data received from other components (eg, sensors or communication modules) into volatile memory, and It can process commands or data stored in , and store the resulting data in non-volatile memory.

As described above, according to various embodiments disclosed in this document, an antiviral filter (eg, the antiviral filter 100 of FIG. 1) and/or a purification device including the same (eg, the mask 200 or The purification device 300 of FIG. 5 includes a breathable support layer molded into a designated shape (eg, the support layer 101 of FIG. 1 ), and a filter layer formed on at least one surface of the support layer (eg, the filter layer of FIG. 1 ). (102)), and the filter layer includes nanofibers to which an amorphous metal oxide component based on at least one of copper oxide, gold, silver, or iron oxide is added (e.g., nanofibers illustrated in enlarged view 'E' of FIG. 1). fiber), it may be configured to cause an oxidation/reduction reaction or generate reactive oxygen species in contact with a virus.

According to various embodiments, the antiviral filter or the purification device including the same as described above further includes a protective layer (eg, the protective layer 103 of FIG. 1 ) disposed to face the support layer with the filter layer interposed therebetween. can do.

According to various embodiments, an antiviral filter or a purification device including the same may include an adhesive layer (eg, an adhesive layer 191 of FIG. 1) disposed between at least one of the support layer and the filter layer or between the filter layer and the protective layer. ) may be further included.

According to various embodiments, at least one of the support layer and the protective layer is made of at least one of a breathable mesh, a nonwoven fabric, and a condensable fiber, and includes at least one of a polymer material and a metal material. can

According to various embodiments, the filter layer may include at least one of polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), cellulose, polyvinyl alcohol (PVA), or polyvinyl alcohol-polyacrylic acid (PVA-PAA). It can be formed from a mixture containing

According to various embodiments, the filter layer may be formed of a mixture of a polymer liquid and a metal precursor, and during a drying process, a metal component of the metal precursor may combine with oxygen to generate an amorphous metal oxide component.

According to various embodiments, the filter layer may include titanium dioxide (TiO ₂ ) or zinc oxide (ZnO).

According to various embodiments, the filter layer may be disposed on both sides of the support layer.

According to various embodiments, the antiviral filter or the purification device including the same further includes a protective layer disposed to face the support layer with the filter layer interposed therebetween, wherein the support layer or the protective layer is a breathable mesh ( mesh), non-woven fabric, or at least one of condensable fibers (felt), and the filter layer is made of polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), cellulose, polyvinyl alcohol (PVA), or PVA- It may be formed of a mixture containing at least one of polyvinyl alcohol-polyacrylic acid (PAA).

According to various embodiments, the filter layer may further include a titanium dioxide (TiO ₂ ) or zinc oxide (ZnO) component.

According to various embodiments disclosed in this document, the purification device (eg, the mask 200 of FIG. 4 or the purification device 300 of FIGS. 5 and 6) includes a support layer (eg, the support layer 101 of FIG. 1) and , A filter layer formed on at least one surface of the support layer (eg, the filter layer 102 of FIG. 1) and a protective layer disposed facing the support layer with the filter layer interposed therebetween (eg, the protective layer 102 of FIG. 1) A filter body (e.g. filter body 201 in FIG. 4 or antiviral filter 325 in FIG. 6) comprising the filter body configured to pass gas, and the filter layer (e.g. filter layer in FIG. 1) (102)) includes nanofibers to which an amorphous metal oxide component based on at least one of copper oxide, gold, silver, or iron oxide is added, thereby causing an oxidation / reduction reaction in contact with a virus or generating reactive oxygen species can be configured.

According to various embodiments, the purifying device as described above includes a band or string (eg, band or string 202 of FIG. 4 ) extending from the filter body and configured to wear the filter body on a user's body. can include more.

According to various embodiments, the purifying device as described above includes a housing (for example, the housing 301 of FIG. 5 or 6) accommodating the filter body, and is disposed in the housing and extracts external air through the filter body. A blowing fan (eg, the blowing fan 331 of FIG. 6 ) configured to flow into the housing may be further included.

According to various embodiments, the purifying device as described above further includes an adhesive layer (eg, the adhesive layer 191 of FIG. 1 ) disposed between at least one of the support layer and the filter layer or between the filter layer and the protective layer. can do.

According to various embodiments, the purification device as described above may further include a light source (eg, the light source 329 of FIG. 6 ) for irradiating light to the filter layer.

According to various embodiments, the purifying device as described above further includes a protective layer disposed facing the support layer with the filter layer interposed therebetween, wherein the support layer or the protective layer is a breathable mesh, nonwoven fabric Or made of at least one of condensable fibers (felt), the filter layer, PAN (polyacrylonitrile), PVDF (polyvinylidene fluoride), PTFE (polytetrafluoroethylene), cellulose (cellulose), PVA (polyvinyl alcohol) or PVA-PAA (polyvinyl alcohol) -polyacrylic acid).

In the above detailed description of this document, specific embodiments have been described, but it will be apparent to those skilled in the art that various modifications are possible without departing from the scope of the present invention.

Claims

In the antiviral filter,

A breathable support layer molded into a designated shape; and

Including a filter layer formed on at least one surface of the support layer,

The filter layer includes nanofibers to which an amorphous metal oxide component based on at least one of copper oxide (CuOx), gold (Au), silver (Ag), or iron oxide (FeOx) is added, thereby contacting the virus to oxidize / reduce Antiviral filters configured to react or generate reactive oxygen species.
According to claim 1,

The antiviral filter further comprising a protective layer disposed to face the support layer with the filter layer interposed therebetween.
According to claim 2,

An antiviral filter further comprising an adhesive layer disposed between at least one of the support layer and the filter layer or between the filter layer and the protective layer.
The method of claim 2, wherein at least one of the support layer and the protective layer is made of at least one of a breathable mesh, a nonwoven fabric, or a condensable fiber, and includes at least one of a polymer material and a metal material. Antiviral filter.
The method of claim 1, wherein the filter layer is at least one of polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), cellulose, polyvinyl alcohol (PVA), or polyvinyl alcohol-polyacrylic acid (PVA-PAA). An antiviral filter formed of a mixture comprising
The antiviral filter according to claim 1, wherein the filter layer is formed of a mixture of a polymer liquid and a metal precursor, and in a drying process, a metal component of the metal precursor is combined with oxygen to form an amorphous metal oxide component.
The antiviral filter according to claim 1, wherein the filter layer includes titanium dioxide (TiO 2 ) or zinc oxide (ZnO).
The antiviral filter according to claim 1, wherein the filter layer is disposed on both sides of the support layer.
According to claim 1,

Further comprising a protective layer disposed to face the support layer with the filter layer interposed therebetween,

The support layer or the protective layer is made of at least one of a breathable mesh, a nonwoven fabric, or a condensable fiber,

The filter layer is formed of a mixture containing at least one of polyacrylonitrile (PAN), polyvinylidene fluoride (PVDF), polytetrafluoroethylene (PTFE), cellulose, polyvinyl alcohol (PVA), or polyvinyl alcohol-polyacrylic acid (PVA-PAA). Antiviral filter.
The antiviral filter according to claim 9, wherein the filter layer further comprises a titanium dioxide (TiO 2 ) or zinc oxide (ZnO) component.
In the purification device,

A filter body comprising the antiviral filter according to any one of claims 1 to 10,

The filter body is configured to pass gas.
According to claim 11,

The purification device further comprises a band or string extending from the filter body and configured to wear the filter body on a user's body.
According to claim 11,

a housing accommodating the filter body; and

and a blowing fan disposed in the housing and configured to introduce outside air into the housing through the filter body.
According to claim 11,

Purifying device further comprising a light source for irradiating light to the filter layer.
The purification device according to claim 14, further comprising a photocatalyst component added to the filter layer.