Enclosure, toxic particle suppression device, toxic particle suppression negative pressure device, and toxic particle suppression negative pressure unit

Abstract

To provide enclosures, bacterial removal devices, bacterial removal negative pressure devices, and bacterial removal negative pressure units that can be immediately set up as negative pressure booths in emergencies indoors of medical facilities such as nursing homes, hospitals, and clinics, without requiring construction work to install new equipment for exhausting air outdoors, thereby minimizing unnecessary costs. [Solution] The enclosure 110 includes a housing 101 in which one or more air purifiers 1 are arranged in the internal space, a partition wall 130 that separates the internal space, a first space A1 in which the intake section 101a of the air purifier 1 is located and which is separated by the partition wall 130, an intake port 101a provided in the housing 101 and communicating with the first space A1, a second space A2 in which the exhaust section 51 of the air purifier 1 is located and which is separated by the partition wall 130, and an exhaust port 101c provided in the housing 101 and communicating with the second space A2.

Description

Technical Field

[0001] The present invention relates to an enclosure equipped with an air purification device that removes and eliminates toxic particles in the air, a bacteria removal device, a bacteria removal negative pressure device, and a bacteria removal negative pressure unit.

Background Art

[0002] Conventionally, the technology of a booth assembly unit, which is installed indoors or outdoors in medical facilities such as care facilities, hospitals, and clinics, forms a simple space partitioned by a sheet member, and ensures air cleanliness to prevent pathogen infection, is well known (for example, Patent Document 1).

[0003] This booth assembly unit is provided with a negative pressure device equipped with an air filter such as a HEPA filter, which purifies the air discharged from the inner space.

Prior Art Documents

Patent Documents

[0004]

Patent Document 1

Summary of Invention

Problems to be Solved by the Invention

[0005] By the way, most medical facilities such as care facilities, hospitals, and clinics do not have equipment for exhausting the air discharged from the negative pressure device of the conventional booth assembly unit installed indoors to the outside. Therefore, the medical facilities have a problem that ancillary work is required to newly install equipment for exhausting air to the outside of the facilities.

[0006] Therefore, medical facilities that introduce conventional booth assembly units and negative pressure devices face the problem of incurring extra costs for ancillary construction work such as equipment for exhausting air to the outside of the facility. Furthermore, medical facilities that do not have equipment for exhausting air to the outside of the facility face the challenge of not being able to immediately set up a simple negative pressure booth using conventional booth assembly units and negative pressure devices in an emergency.

[0007] Therefore, the present invention has been made in view of the above problems, and its purpose is to provide an enclosure, a bacterial removal device, a bacterial removal negative pressure device, and a bacterial removal negative pressure unit that can be immediately set up in an emergency indoors of medical facilities such as nursing homes, hospitals, and clinics, without requiring construction work to install new equipment for exhausting to the outdoors and without incurring unnecessary costs. [Means for solving the problem]

[0008] An enclosure according to one aspect of the present invention comprises a housing in which one or more air purifying devices are arranged in an internal space, one or more partition walls separating the internal space, a first space separated by the partition walls in which the intake section of the air purifying device is arranged, an intake port provided in the housing that communicates with the first space, a second space separated by the partition walls in which the exhaust section of the air purifying device is arranged, and an exhaust port provided in the housing that communicates with the second space.

[0009] An enclosure comprising: a casing in which one or more air purifiers are arranged in an internal space; one or more partitions separating the internal space; a first space separated by the partitions in which the intake section of the air purifier is arranged; an intake port provided in the casing and communicating with the first space; a second space separated by the partitions in which the exhaust section of the air purifier is arranged; and an exhaust port provided in the casing and communicating with the second space; and the air purifier.

[0010] One embodiment of the present invention provides a negative pressure device for reducing toxic particles, comprising: a housing in which one or more air purifiers are arranged in an internal space; one or more partitions separating the internal space; a first space separated by the partitions in which the intake sections of the air purifiers are arranged; an intake port provided in the housing that communicates with the first space; a second space separated by the partitions in which the exhaust sections of the air purifiers are arranged; and an exhaust port provided in the housing that communicates with the second space; and the air purifiers arranged in a negative pressure booth to create negative pressure inside the booth.

[0011] A negative pressure unit for reducing toxic particles according to one embodiment of the present invention comprises a housing in which one or more air purifiers are arranged in an internal space; one or more partitions separating the internal space; an enclosure having a first space separated by the partitions in which the intake section of the air purifiers is arranged; an intake port provided in the housing that communicates with the first space; a second space separated by the partitions in which the exhaust section of the air purifiers is arranged; and an exhaust port provided in the housing that communicates with the second space; a negative pressure unit for reducing toxic particles having the air purifiers; and a negative pressure booth in which the negative pressure unit for reducing toxic particles is installed.

[0012] The enclosure is disposed at the bottom of the housing and has positioning means for determining the installation position of the air purifier on the housing.

[0013] The enclosure is disposed at the bottom of the housing and has vibration-damping means for absorbing vibrations of the air purifier.

[0014] The enclosure is located at the bottom of the housing and has a tray that determines the installation position of the air purifier on the housing and absorbs vibrations of the air purifier.

[0015] The enclosure is disposed in the partition wall and has holding means for holding the air purifier.

[0016] The toxic particle abatement negative pressure unit includes an apparatus-side exhaust connector of the toxic particle abatement negative pressure apparatus, and a booth-side exhaust connector provided on the negative pressure booth that is hermetically connected to the apparatus-side exhaust connector.

[0017] In the toxic particle abatement negative pressure unit, the apparatus-side exhaust connector and the booth-side exhaust connector are connected by magnetic force. [Effects of the Invention]

[0018] According to the present invention, there is no need for construction work to newly install equipment for exhausting air to the outdoors, suppressing the occurrence of unnecessary costs, and it is possible to provide an enclosure, a bacteria removal apparatus, a bacteria removal negative pressure apparatus, and a bacteria removal negative pressure unit that allow a negative pressure booth to be set up immediately indoors in medical facilities such as nursing care facilities, hospitals, and clinics in an emergency. [Brief Description of the Drawings]

[0019] [Figure 1] A perspective view seen from the front side showing the configuration of the toxic particle abatement apparatus according to one aspect of the present invention [Figure 2] A perspective view seen from the back side showing the configuration of the same toxic particle abatement apparatus [Figure 3] A front view showing the configuration of the toxic particle abatement apparatus with the door of the same opened [Figure 4] An exploded perspective view schematically showing the configuration of the same toxic particle abatement apparatus [Figure 5] A perspective view showing the configuration of the same ultraviolet sterilization apparatus [Figure 6] A perspective view showing the configuration of the same ultraviolet sterilization apparatus in a state where the air purification unit is removed [Figure 7] A front view showing the configuration of the same ultraviolet sterilization apparatus [Figure 8] A cross-sectional view of the same ultraviolet sterilization apparatus taken along line VII-VII of FIG. 7 [Figure 9] An exploded perspective view showing the configuration of the same air purification unit [Figure 10] An exploded perspective view showing the configuration of the same air purification unit and filter unit [Figure 11] The same, an exploded perspective view of the ultraviolet sterilization apparatus showing the configuration in which the ultraviolet sterilization unit is detachable [Figure 12] The same, a perspective view showing the configuration of the ultraviolet sterilization unit [Figure 13] The same, an exploded perspective view showing the configuration of the ultraviolet sterilization unit [Figure 14] The same, a front view of the toxic particle abatement apparatus schematically showing a state where three ultraviolet sterilization apparatuses installed in the enclosure are driven [Figure 15] The same, a side view of the toxic particle abatement apparatus schematically showing a state where three ultraviolet sterilization apparatuses installed in the enclosure are driven [Figure 16] The same, a perspective view showing the toxic particle abatement negative pressure unit in which the toxic particle abatement apparatus is installed in a simple booth [Figure 17] The same, a partial cross-sectional view showing a state before the male connector portion of the enclosure and the female connector portion of the simple booth are connected [Figure 18] The same, a partial cross-sectional view showing a state where the male connector portion of the enclosure and the female connector portion of the simple booth are connected [Figure 19] The same, a perspective view schematically showing the toxic particle abatement apparatus in which two ultraviolet sterilization apparatuses are arranged in the enclosure [Figure 20] The same, a perspective view schematically showing the toxic particle abatement apparatus in which a single ultraviolet sterilization apparatus is arranged in the enclosure [Figure 21] The same, a perspective view seen from the back side showing the configuration of the toxic particle abatement apparatus, showing a state where an exhaust duct is connected to the male connector portion of the enclosure [Figure 22] The same, a side view of the toxic particle abatement negative pressure unit schematically showing a state where an exhaust duct is connected to the female connector portion of the simple booth [Figure 23] The same, a partial cross-sectional view showing a state before the male connector portion provided with the magnet of the enclosure and the female connector portion of the simple booth are connected [Figure 24] The same, a partial cross-sectional view showing a state where the male connector portion provided with the magnet of the enclosure and the female connector portion of the simple booth are connected [Figure 25]This is a partial cross-sectional view showing the state before the male connector of the enclosure and the female connector of the simple booth, which has a magnet, are connected. [Figure 26] The same, a partial cross-sectional view showing the state in which the male connector of the enclosure and the female connector of the simple booth, which is equipped with a magnet, are connected. [Figure 27] A schematic side view of a toxic particle reduction negative pressure unit, showing the state in which an exhaust duct for exhausting to the outside is connected to the female connector of the simple booth. [Figure 28] This is a perspective view from the front showing the configuration of the toxic particle reduction device with the simple booth housed inside. [Modes for carrying out the invention]

[0020] The present invention will be described below with reference to the drawings. Note that the drawings based on each embodiment in the following description are schematic, and the relationship between the thickness and width of each part, as well as the ratio of the thicknesses of each part, may differ from the actual dimensions. Furthermore, please be aware that there may be differences in dimensional relationships and ratios between drawings. Also, the vertical direction will be described in terms of the vertical direction with the toxic particle reduction device installed.

[0021] As shown in Figures 1 and 2, the toxic particle elimination device 100 of this embodiment includes an ultraviolet sterilizer 1, which is an air purification device, and an enclosure 110 in which the ultraviolet sterilizer 1 is housed. Figure 1 is a perspective view from the front showing the configuration of the toxic particle elimination device, and Figure 2 is a perspective view from the rear showing the configuration of the toxic particle elimination device. Note that the enclosure 110 may be configured to house multiple, in this example, three ultraviolet sterilizers 1, but is not limited to this configuration, and may be configured to house one or more ultraviolet sterilizers 1.

[0022] The enclosure 110 has, for example, a cabinet-type outer box housing 101 made of steel. However, the enclosure 110 is not limited to steel, and can be made of various metals or metal alloys such as aluminum or stainless steel, or FRP or other materials that have a certain level of strength and rigidity.

[0023] The enclosure 110 has an upper opening 101a which serves as an air intake, formed on the top of the housing 101, a front opening 101b formed on the front, and a rear opening 101c which serves as an exhaust port, formed on the rear.

[0024] Furthermore, the enclosure 110 has two doors 102 and 103 that form a double-hinged (double-door) opening and closing front panel that opens and closes the front opening 101b. Here, a latch lever 114 with a lock is provided on the right door 102. The enclosure 110 may also be configured to have a ventilation cover 104 made of a mesh plate, perforated metal, etc. that covers the upper opening 101a.

[0025] The enclosure 110 has handles 105 on both sides of its upper section. The enclosure 110 has casters 106 at the four corners of its lower section. The casters 106 may also have a braking function.

[0026] Furthermore, the enclosure 110 has a receptacle-type inlet connector 107 and a changeover switch 108 for switching the power ON / OFF on the lower side of one side. An inlet plug-type power cord (not shown) is connected to the inlet connector 107.

[0027] The toxic particle reduction device 100 is powered by plugging the power cord, which is connected to the inlet connector 107 of the power outlet, into a commercial power outlet or the like, thereby supplying power to each ultraviolet sterilization device 1.

[0028] The changeover switch 108 is a switch that collectively switches the power supply to each ultraviolet sterilizer 1 ON / OFF. The changeover switch 108 is electrically connected to a power strip (not shown) located inside the enclosure 110. The power strip has multiple outlets, in this case, three outlets. The number of outlets on the power strip is set to the maximum number of ultraviolet sterilizers 1 that can be accommodated in the enclosure 110.

[0029] The enclosure 110 can be configured to have an annular male connector portion 109 as a ductless male connector provided in the rear opening 101c. The male connector portion 109 is joined to the rear part of the enclosure 110 around the rear opening 101c by welding or the like. That is, the male connector portion 109 communicates with the inside of the enclosure 110 through the rear opening 101c, which serves as an exhaust port.

[0030] Furthermore, a fan motor or the like may be installed in the rear opening 101c to assist in exhausting air from the inside to the outside of the enclosure 110. Examples of such fan motors include axial fans (propeller fans), mixed-flow fans, centrifugal fans (multi-blade fans, sirocco fans, radial fans, plate fans, turbo fans, limit load fans, airfoil fans, etc.), centrifugal axial fans, vortex fans, and cross-flow fans.

[0031] As shown in Figures 3 and 4, the toxic particle elimination device 100 has two spaces A1 and A2 formed vertically within the enclosure 110. Figure 3 is a front view showing the configuration of the toxic particle elimination device with the doors open, and Figure 4 is an exploded perspective view schematically showing the configuration of the toxic particle elimination device. Note that when the doors 102 and 103 are closed and the front opening 101b is closed, two isolated spaces A1 and A2 are formed in the toxic particle elimination device 100.

[0032] The enclosure 110 has a mounting tray 120, a bottom member that is laid over almost the entire inner bottom surface and on which the ultraviolet sterilizer 1 is placed, and a partition wall 130, a separating member that is positioned midway in the vertical direction and separates the two upper and lower spaces A1 and A2. Specifically, the mounting tray 120 has a predetermined thickness and a substantially rectangular surface, and is positioned to cover the entire bottom surface of the housing 101 of the enclosure 110. The partition wall 130 also has a predetermined thickness and a substantially rectangular surface, and is positioned midway inside the enclosure 110, in close contact with the inner surface of the housing 101, and is positioned substantially horizontally.

[0033] Doors 102 and 103 have packings 102a and 103a, which are sealing members made of non-breathable rubber foam, urethane foam, polyethylene foam, melamine foam, etc., provided on their edges, and convex-shaped contact portions 111 and 112 that are in close contact with the front end surface of the partition wall 130.

[0034] With the doors 102 and 103 closed and the front opening 101b closed, the enclosure 110 is airtightly separated by the packings 102a and 103a and the sealing parts 111 and 112 from the two external spaces A1 and A2 of each ultraviolet sterilizer 1. In other words, the upper space A1 and the lower space A2 of the enclosure 110 communicate only through each ultraviolet sterilizer 1.

[0035] Furthermore, a rod latch lock 113 can also be installed on the inner surface of the right-hand door 102, which unlocks and locks doors 102 and 103 by operating a lockable latch lever 114 (see Figure 1).

[0036] The mounting tray 120 is formed from a plate-shaped foam having a certain level of strength and cushioning properties, made from foamed resin foam and / or elastic foamed polymer such as foamed plastic, rubber, urethane, polyethylene, melamine, etc. Preferably, the mounting tray 120 is made from a foam with discontinuous cells or a foam with a continuous film surface and an open-cell interior.

[0037] The mounting tray 120 has a plurality of device mounting recesses 121 formed on its upper surface in a substantially circular shape, and a total of six grooves 122, 123 formed in a concave cross-section that extend from each device mounting recess 121 in the front-rear direction. The device mounting recesses 121 and grooves 122, 123 are formed at substantially equal intervals in the left-right direction of the enclosure 110.

[0038] The exhaust base 50 of the ultraviolet sterilizer 1 is placed in each device mounting recess 121. In this state, the front groove 122 is provided with a notch so that the buttons located at the bottom of the switch unit 55 of the ultraviolet sterilizer 1 are not covered and are exposed. As a result, the buttons on the switch unit 55 can be operated while the ultraviolet sterilizer 1 is placed on the mounting tray 120.

[0039] Furthermore, the rear groove 123 is left exposed so as not to cover the connector portion of the power cable (not shown) of the ultraviolet sterilizer 1. Therefore, the power cable and connector portion do not interfere with the mounting tray 120. The power cable of the ultraviolet sterilizer 1 is plugged into an outlet on a power strip located inside the enclosure 110.

[0040] Thus, the mounting tray 120 acts as a vibration-damping member that absorbs vibrations of the ultraviolet sterilizer 1 inside the enclosure 110 through its cushioning properties, and as a positioning member that determines the installation position of the ultraviolet sterilizer 1. In other words, the mounting tray 120 constitutes a vibration-damping positioning means.

[0041] The partition wall 130 is formed from a plate-shaped foam having a certain level of strength and airtightness, made from foamed plastic or foamed resin foam and / or elastic foamed polymer such as rubber, urethane, polyethylene, melamine, etc. Preferably, the partition wall 130 is a foam with discontinuous cells or a foam with a continuous film surface and a continuous cell interior. The partition wall 130 has partition materials 131 and 133 that separate the enclosure 110 into approximately two halves in the front-to-back direction (see Figure 4).

[0042] The partition wall material 131, installed on the rear side of the enclosure 110, which is the deeper part, has multiple, in this case three, device holding portions 132 formed in a substantially semicircular concave shape extending from the front end face toward the rear. The partition wall material 133, installed on the front side of the enclosure 110, has multiple, in this case three, device holding portions 134 formed in a substantially semicircular concave shape extending from the rear end face toward the front. The device holding portions 132 and 134 are formed at substantially equal intervals in the left-right direction of the enclosure 110.

[0043] When the front and rear end faces of the two partition wall materials 131 and 133 are brought together, a substantially circular hole is formed by the respective device holding parts 132 and 134 of the partition wall 130. The concave curved surfaces of the respective device holding parts 132 and 134 of the partition wall 130 are in close contact with the outer surface of the outer cover 30 of the ultraviolet sterilizer 1 which is placed on the enclosure 110.

[0044] Furthermore, in the enclosure 110, first, one partition wall member 131 is installed in the rear deep part, the ultraviolet sterilizer 1 is placed on top, and the outer cover 30 is fitted into the device holding part 132, after which the other partition wall member 133 is attached from the front.

[0045] Thus, the partition wall 130 also constitutes a holding means that securely holds the ultraviolet sterilizer 1 in place by having its thickness-direction concave curved surface, which forms the respective device holding parts 132 and 134, in close contact with the outer cover 30 of the ultraviolet sterilizer 1 placed inside the enclosure 110. Furthermore, the partition wall 130 is an airtight member that maintains airtightness by closely contacting the inner surface of the housing 101 of the enclosure 110 and the outer cover 30 of the ultraviolet sterilizer 1. In other words, the partition wall 130 constitutes an airtight holding means.

[0046] Furthermore, the enclosure 110 is provided with convex frames 101d on both inner surfaces that form inward-facing flanges that define and guide the vertical direction when the partition wall 130 is installed. In other words, users such as hospital staff can install the partition wall members 131 and 133 of the partition wall 130 by guiding them along the convex frames 101d that protrude from both sides inside the enclosure 110.

[0047] This defines the vertical position of the partition wall 130 when it is installed inside the enclosure 110. In other words, the partition wall 130 can be easily installed in a position that is in close contact with the outer cover 30 of the ultraviolet sterilizer 1 and maintains airtightness without the device holding parts 132 and 134 shifting.

[0048] As described above, when the enclosure 110 houses and positions the three ultraviolet sterilizers 1, and the doors 102 and 103 are closed and the front opening 101b is closed, the upper space A1 and the lower space A2 are separated by the doors 102 and 103, the inner wall of the housing 101, and the partition wall 130. Therefore, the upper space A1 and the lower space A2, which are internal spaces of the enclosure 110, are in communication only through each ultraviolet sterilizer 1. That is, space A1 becomes the intake space, and space A2 becomes the exhaust space.

[0049] Herein, the configuration of the ultraviolet sterilization device 1 of this embodiment will be described in detail below. Figure 5 is a perspective view showing the configuration of the ultraviolet sterilization device 1, Figure 6 is a perspective view showing the configuration of the ultraviolet sterilization device 1 with the air purification unit removed, and Figure 7 is a front view showing the configuration of the ultraviolet sterilization device 1. The ultraviolet sterilization device 1, which is an air purification device as shown in Figures 5 to 7, has, in its mounted state, an air purification unit 2 as a filter section, an intake flow unit 3 as an intake section, a base unit 4 as the main body section, and an exhaust unit 5 as an exhaust section, in that order from the top.

[0050] The air purification unit 2 includes an outer cover 20, a filter unit 22, and the like. The outer cover 20 has an upper opening 21 in the center when viewed from above. The filter unit 22 is located below the upper opening 21 and is disposed inside the outer cover 20. The detailed configuration of the filter unit 22 will be explained later using Figures 8 to 10.

[0051] The outer cover 20 constituting the air purification unit 2 is formed from general-purpose plastics, including base materials such as polyethylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile butadiene styrene (ABS), acrylonitrile styrene (AS), methyl methacrylate (PMMA), polyethylene (PE), polypropylene (PP), urea resin (UF), polyacetal (POM), and polyamide (PA). The base material of the intake flow unit 3 is not limited to general-purpose plastics; it may also be formed from metals including aluminum alloys, iron, stainless steel alloys, copper, titanium, magnesium, or alloys thereof. Furthermore, in the following description, the types of general-purpose plastics and metal base materials will be omitted if they are the same as those exemplified above, and will only be described if they are different.

[0052] As shown in Figure 8, the intake flow unit 3 includes an outer cover 30, a pressure loss reduction section 32, a surrounding section 33, etc. The upper end of the intake flow unit 3 is fitted and connected to the lower end of the air purification unit 2. The ultraviolet sterilization device 1 is configured to allow for easy attachment of the air purification unit 2 to the intake flow unit 3, and by removing the air purification unit 2 from the intake flow unit 3, the intake flow rate can be increased, allowing the device to be used as a device specifically for reducing toxic targets such as viruses and bacteria.

[0053] The outer cover 30 has an upper opening 31 in the center when viewed from above. The pressure loss reduction section 32 is located below the upper opening 31. The surrounding section 33 surrounds the pressure loss reduction section 32 and is disposed inside the outer cover 30.

[0054] The outer cover 30, pressure loss reduction section 32, and surrounding section 33 that constitute the intake flow unit 3 are formed from a base material made of general-purpose plastic. However, the base materials of the outer cover 30, pressure loss reduction section 32, and surrounding section 33 are not limited to general-purpose plastic and may be formed from metal.

[0055] The intake flow unit 3 has an introduction passage 34 that communicates with the upper opening 31. The introduction passage 34 is formed between the pressure loss reduction section 32 and the surrounding section 33. This introduction passage 34 is a space through which external fluid located above the ultraviolet sterilizer 1 is introduced into the base unit 4 from the upper opening 31 via the air purification unit 2.

[0056] The base unit 4 has a roughly cylindrical outer casing 40. The upper end of the base unit 4 is fitted and connected to the lower end of the intake flow unit 3. A UV sterilization unit 41, which will be described later, is housed inside the outer casing 40. The outer casing 40 is formed from a metal base material. However, the base material of the outer casing 40 is not limited to metal and may be formed from general-purpose plastic. If the outer casing 40 is formed from general-purpose plastic, it may be externally colored by internal coloring, which involves mixing colorants such as dyes, pigments, and colorants, or by surface processing such as printing, painting, or plating, which involves depositing a metal film.

[0057] The exhaust unit 5 is located below the base unit 4. The upper end of the exhaust unit 5 is fitted and connected to the lower end of the outer casing 40. The exhaust unit 5 has an exhaust base 50, which is a fluid discharge housing. Multiple exhaust ports 51, in this case three, are formed on the outer circumferential surface of the exhaust base 50. The exhaust ports 51 constitute the openings of the discharge passage 52 formed in the exhaust base 50. The exhaust unit 5 has a switch unit 55 on its lower end. The switch unit 55 consists of an ON / OFF button, an airflow switching button for switching between multiple airflow levels, etc.

[0058] Multiple exhaust ports 51 and discharge passages 52 are provided on the exhaust base 50, in this case three of each. The exhaust ports 51 are located on the lower part of the outer circumferential surface of the exhaust base 50. The three exhaust ports 51 are provided at approximately equal intervals along the circumferential direction of the exhaust base 50. The discharge passages 52 guide the air that has passed through the base unit 4 to the exhaust ports 51. The exhaust ports 51 then discharge the fluid guided through the discharge passages 52 to the outside.

[0059] Furthermore, the discharge passage 52 is defined by a plurality of walls erected within the exhaust unit 5. The walls are, for example, provided to curve radially outward from approximately the center of the exhaust unit 5 in a plan view. The walls are inclined or curved with respect to the vertical so that their lower ends connect to the exhaust port 51. The discharge passage 52 is also formed to spiral radially outward from the center of the cross-section of the exhaust unit 5, for example. The spirally spiraled discharge passage 52 guides the fluid flow that has passed through the base unit 4 from the vertical to the radial direction towards the exhaust port 51.

[0060] Figure 8 is a cross-sectional view of the ultraviolet sterilization device 1 along the line VII-VII in Figure 7. Figure 9 is an exploded perspective view showing the configuration of the air purification unit. Figure 10 is an exploded perspective view showing the configuration of the air purification unit and the filter unit. As shown in Figures 8 to 10, the filter unit 22 has a triple (three-layer) structure inside the outer cover 20. Specifically, the filter unit 22 comprises, in order from the top, a pre-filter 23, a HEPA (High Efficiency Particulate Air) filter 24, and a deodorizing filter 25.

[0061] The filter unit 22 is equipped with a pre-filter 23, a HEPA filter 24, and a deodorizing filter 25 in that order from top to bottom, but it is not limited to this order and may be in other order. For example, the filter unit 22 may be equipped with a pre-filter 23, a deodorizing filter 25, and a HEPA filter 24 in that order from top to bottom.

[0062] The pre-filter 23, HEPA filter 24, and deodorizing filter 25 are arranged within a substantially cylindrical tubular section 24a. The tubular section 24a has an outer diameter that is substantially the same as or slightly smaller than the inner diameter of the outer cover 20. The pre-filter 23, HEPA filter 24, and deodorizing filter 25 also have an outer diameter that is substantially the same as or slightly smaller than the inner diameter of the tubular section 24a. With this configuration, the inside of the outer cover 20 has a sealed structure due to the tubular section 24a and the filter unit 22 arranged within the tubular section 24a.

[0063] An annular packing 27 is provided on the inner circumferential surface of the outer cover 20 of the air purification unit 2. The packing 27 abuts against the outer circumferential surface of the outer cover 30 of the intake flow unit 3. The packing 27 is made of an elastic material or the like that maintains airtightness / watertightness to prevent the intrusion of dust, water, etc. In other words, the air purification unit 2 is configured to be detachable from the intake flow unit 3 and is kept airtight and / or watertight by the packing 27.

[0064] The cylindrical portion 24a is configured to be detachable from the outer cover 20. Furthermore, the filter unit 22 (pre-filter 23, HEPA filter 24, and deodorizing filter 25) is configured to be detachable from and replaceable from the cylindrical portion 24a. This configuration allows the air purification unit 2 to replace the filter unit 22 located within the outer cover 20.

[0065] This filter unit 22 removes large suspended particles such as dust, pollen, and common pollutants, as well as foreign substances such as harmful chemicals and / or malodorous odors from the intake fluid. The filter unit 22 has a triple (three-layer) structure, but is not limited to this; for example, it may have a quadruple (four or more layers) or double (two or fewer layers) structure. Furthermore, the filter unit 22 is installed within the air purification unit 2, but is not limited to this; for example, it may be installed within the intake air flow unit 3.

[0066] The pre-filter 23 has a circular shape and is disposed within a substantially cylindrical section 24a. The pre-filter 23 removes relatively large suspended particles from the fluid flowing in from the upper opening 21. The pre-filter 23 mainly removes suspended particles with a particle size of 5 μm or larger, such as dust and pollen.

[0067] The HEPA filter 24 is folded in an accordion-like manner and disposed within a substantially cylindrical section 24a. The HEPA filter 24 is a filter that has a particle collection efficiency of 99.97% or more for particles with a diameter of 0.3 μm. The HEPA filter 24 removes suspended particles with a diameter of 0.3 μm or more, such as PM2.5, from the fluid that has passed through the pre-filter 23.

[0068] The deodorizing filter 25 is a deodorizing filter that adsorbs and removes harmful chemical substances and / or malodors from the fluid that has passed through the HEPA filter 24. The deodorizing filter 25 has a circular shape and is disposed within a substantially cylindrical tubular section 24a. The deodorizing filter 25 has a plurality of substantially cylindrical holes 25a that penetrate the upper and lower sides. Mesh sheets are disposed on the upper and lower sides of the deodorizing filter 25, and these mesh sheets contain at least one or more granulated activated carbon 26 inside each of the plurality of holes 25a. The granulated activated carbon 26 is, for example, made by crushing coal and adding a binder to form a predetermined shape, and it adsorbs and removes harmful chemical substances and / or malodors from the fluid.

[0069] Furthermore, while the deodorizing filter 25 uses granulated activated carbon 26 manufactured from coal, it is not limited to this, and other activated carbons such as granular activated carbon manufactured from coconut shells may be used. Also, the shape of the granulated activated carbon 26 is not particularly limited, and various shapes such as cylindrical, fibrous, honeycomb, crushed, granular, and powdered can be used.

[0070] The fluid that has passed through the HEPA filter 24 then passes through the pores 25a of the deodorizing filter 25, which contains granulated activated carbon 26, and harmful chemical substances and / or malodors in the fluid are removed.

[0071] Furthermore, the shapes of the pre-filter 23, HEPA filter 24, and deodorizing filter 25 are not limited to a circular shape, but may be polygonal, elliptical, or other shapes. In particular, it is preferable that the shapes of the pre-filter 23, HEPA filter 24, and deodorizing filter 25 substantially match the shape of the inside of the cylindrical portion 24a disposed in the outer cover 20.

[0072] With this configuration, the fluid flowing in from the upper opening 21 sequentially passes through the pre-filter 23, HEPA filter 24, and deodorizing filter 25, removing suspended particles and malodorous odors before being drawn into the intake air flow unit 3.

[0073] The pressure loss reduction section 32 of the intake flow unit 3 has a bulging section 35 that expands in the middle of the vertical direction along the longitudinal axis X of the ultraviolet sterilizer 1. The outer diameter of the pressure loss reduction section 32 gradually widens from the lower side to the bulging section 35, and then gradually narrows from the bulging section 35 to the tip section 36 which is the top of the upper side. The tip section 36 has a substantially pointed shape that forms an obtuse or acute angle.

[0074] The pressure loss reduction section 32 is roughly conical in shape from the bulging section 35 to the tip section 36. Furthermore, the pressure loss reduction section 32 is roughly frustoconical in shape from the bulging section 35 to the base section. In other words, the pressure loss reduction section 32 here is what is known as a mushroom shape.

[0075] Furthermore, the pressure loss reduction section 32 may have a shape from the bulging section 35 to the tip section 36 that is roughly pyramidal, truncated pyramidal, or truncated cone, or a spiral-shaped inlet passage 34 may be formed on its outer surface. The shape from the bulging section 35 to the base end may also be roughly inverted truncated pyramidal. Moreover, the pressure loss reduction section 32 may be roughly conical in shape, such as a cone shape, as a whole.

[0076] The surrounding portion 33 has an annular shape with different inner diameters along the longitudinal axis X direction. The surrounding portion 33 has a constricted portion 37 and an expanded portion 38. The constricted portion 37 is formed to narrow towards the upper opening 31 located on the upper side. The expanded portion 38 is formed at a position radially opposite to the bulging portion 35.

[0077] The constricted portion 37 has an inner diameter that is smaller than the outer diameter of the bulging portion 35 and larger than the outer diameter near the tip portion 36. The enlarged portion 38 has an inner diameter set such that it has a predetermined radial gap with respect to the opposing bulging portion 35.

[0078] Therefore, the inner diameter of the surrounding portion 33 is set to have a gap of a predetermined amount or more with respect to the pressure loss reduction portion 32. For this reason, the surrounding portion 33 has a shape that does not obstruct the flow of fluid flowing into the intake flow unit 3.

[0079] Furthermore, the constricted portion 37 is not limited to the upper position, but can be set as appropriate as long as it does not obstruct the flow of fluid. For example, the constricted portion 37 may be located downstream of the bulging portion 35 in the direction of fluid flow.

[0080] The introduction passage 34 is formed by the pressure loss reduction section 32 and the surrounding section 33. Therefore, the introduction passage 34 has a substantially annular cross-sectional spatial shape perpendicular to the longitudinal axis X. In addition, the introduction passage 34 has a shape that is at least partially curved along the direction of fluid flow. Specifically, as shown in Figure 8, the introduction passage 34 has a cross-sectional spatial shape in which a part of the introduction passage 34 defined between the bulging section 35 and the enlarged diameter section 38 is curved in a substantially C shape.

[0081] Furthermore, the exhaust base 50 incorporates a blower, specifically a motor 53 acting as a rotor, and a flow generation unit 54 above the exhaust port 51 and the discharge passage 52. The flow generation unit 54 is a so-called rotating blade (propeller) and is composed of a hub that rotates around an axis and a plurality of blades formed on the outer surface of the hub.

[0082] The type and shape of the flow generation unit 54 are not particularly limited, and for example, axial flow fans (propeller fans), mixed flow fans, centrifugal fans (multi-blade fans, sirocco fans, radial fans, plate fans, turbo fans, limit load fans, airfoil fans, etc.), centrifugal axial flow fans, vortex flow fans, cross-flow fans, etc. can be applied.

[0083] Furthermore, the motor 53 and the fluid generation unit 54 may be arranged, for example, at the upper and lower ends in the longitudinal axis X direction of the base unit 4, inside the intake flow unit 3, or on the base unit 4 side near the exhaust unit 5. In addition, the motor 53 and the fluid generation unit 54 may be configured in multiple units to generate the fluid flow of the fluid drawn in from the intake flow unit 3.

[0084] The flow generation unit 54 has a plurality of radially projecting blades connected to the radially outward side of the outer circumferential surface of the hub. The hub of the flow generation unit 54 is connected to the motor 53. In addition, a plurality of dimples may be formed on the surface of the blades of the flow generation unit 54.

[0085] The fluid generation unit 54 rotates when power is transmitted from the motor 53. As the fluid generation unit 54 rotates, a fluid is formed inside the exhaust base 50. That is, the fluid generation unit 54 causes fluid to flow into the base unit 4 through the intake flow unit 3. The fluid generation unit 54 then forms a fluid that passes through the base unit 4 and is discharged from the exhaust port 51.

[0086] Furthermore, the rotation direction of the flow generation unit 54 is set to follow the radially outward spiral of the discharge passage 52. For example, if the flow generation unit 54 rotates clockwise, the spiral direction of the discharge passage 52 is set to a shape that curves to the right.

[0087] The configuration of the ultraviolet sterilization unit 41 will be explained in detail below. Figure 11 is an exploded perspective view of the ultraviolet sterilization device 1 showing that the ultraviolet sterilization unit 41 is detachable, Figure 12 is a perspective view showing the configuration of the ultraviolet sterilization unit 41, and Figure 13 is an exploded perspective view showing the configuration of the ultraviolet sterilization unit 41.

[0088] As shown in Figure 11, the ultraviolet sterilization unit 41 is configured to be easily inserted and removed from the upper opening of the outer casing 40 from which the air purification unit 2 and the intake flow unit 3 have been removed. In other words, the ultraviolet sterilization unit 41 is configured to be easily attached to and removed from the base unit 4.

[0089] The ultraviolet sterilization unit 41 receives fluid through the introduction passage 34 of the intake flow unit 3, and the fluid flows downwards through it. As shown in Figures 12 and 13, the ultraviolet sterilization unit 41 includes a first UV blocking holder 42A as an upper frame, a second UV blocking holder 42B as a lower frame, a support column 43 as a support frame, a reflector 44 as a reflector, etc. The support column 43 connects the upper first UV blocking holder 42A and the lower second UV blocking holder 42B. The support column 43 is made of a metal such as aluminum alloy or stainless steel.

[0090] The ultraviolet sterilization unit 41 has multiple support columns 43, in this case three, and reflectors 44. Furthermore, the ultraviolet sterilization unit 41 has an enclosed ultraviolet reflection path 47 (see Figure 9) within its internal space, surrounded by the first UV blocking holder 42A, the second UV blocking holder 42B, the reflectors 44, etc. The ultraviolet reflection path 47 forms a high-level UV region for sterilizing and disinfecting fluids.

[0091] A roughly U-shaped (roughly U-shaped) handle 48 is positioned approximately in the center of the first UV-blocking holder 42A. The handle 48 is a gripping part that the user holds when attaching or detaching the ultraviolet sterilization unit 41 to the outer casing 40.

[0092] Furthermore, multiple UV-blocking filters 46, which are electromagnetic wave shielding filters that act as ultraviolet light leakage suppression units, are attached to the first UV-blocking holder 42A and the second UV-blocking holder 42B, respectively.

[0093] The UV-blocking filter 46 has a structure through which fluid can pass. The UV-blocking filter 46 prevents ultraviolet rays emitted from the ultraviolet light source 45, which is the ultraviolet radiation part described later, from leaking out of the ultraviolet sterilization unit 41 to the outside. The UV-blocking filter 46 is composed of a structure (honeycomb core) in which multiple cells, which are polygonal three-dimensional shapes such as squares and hexagons, are arranged neatly without gaps.

[0094] The UV-blocking filter 46 is formed from glass fiber, synthetic resin, metal, rubber, ceramic, or composite materials thereof. For example, the UV-blocking filter 46 may be formed from a UV-resistant material such as a glass fiber sheet, stainless steel, titanium, aluminum or their alloys, or other silicone resin or urea resin.

[0095] Sockets 49 (see Figure 9) are positioned opposite each other approximately in the center of the inside of the first UV blocking holder 42A and the second UV blocking holder 42B. The terminals of the ultraviolet light sources 45 are electrically connected to the sockets 49. Multiple ultraviolet light sources 45 are provided, corresponding to the number of sockets 49; in this case, three are provided. The three ultraviolet light sources 45 are arranged to irradiate ultraviolet light over approximately the entire area of ​​the ultraviolet reflection path 47. That is, each ultraviolet light source 45 is erected within the ultraviolet reflection path 47, sandwiched between the sockets 49 of the first UV blocking holder 42A and the second UV blocking holder 42B.

[0096] Each ultraviolet light source 45 is, for example, a straight-tube-shaped ultraviolet irradiation unit. The ultraviolet light source 45 emits ultraviolet light that reduces toxic substances through decomposition, inactivation, disinfection, sterilization, and other similar processes. Various light sources such as mercury lamps, xenon lamps, excimer lamps, metal halide lamps, neon lamps, and LEDs can be used as the ultraviolet light source 45.

[0097] Furthermore, the shape of each ultraviolet light source 45 is not limited to a straight tube shape, but may be, for example, U-shaped, spiral, spherical, or balloon-shaped. Also, the number of ultraviolet light sources 45 is not limited to three, and the placement location and number can be set as appropriate, as long as it is possible to irradiate the fluid flowing in the ultraviolet reflection path 47 with ultraviolet light. By using multiple ultraviolet light sources 45, the amount of ultraviolet light increases accordingly, which can improve the efficiency of detoxifying toxic substances.

[0098] The ultraviolet light sources 45 are positioned within the ultraviolet reflection path 47 through which the air inside the ultraviolet sterilization unit 41 passes. The three ultraviolet light sources 45 are arranged so that their longitudinal directions are parallel to the longitudinal axis X of the ultraviolet sterilization unit 41, and they are positioned around the central axis (longitudinal axis X) of the ultraviolet sterilization unit 41. Therefore, each ultraviolet light source 45 is surrounded by a reflector 44. As a result, the ultraviolet light emitted from the ultraviolet light sources 45 is reflected by the reflector 44 into the ultraviolet reflection path 47, forming a high-level UV region.

[0099] The ultraviolet light emitted from the ultraviolet light source 45 preferably has a wavelength of about 200-300 nm, and more preferably is set to around 250-270 nm. Of course, the ultraviolet light may also be near-ultraviolet (UV-C), far-ultraviolet (wavelength 10-200 nm), or extreme ultraviolet (wavelength 10-121 nm), etc., with a wavelength of less than 260 nm, as long as it can at least neutralize the toxic substance. Near-ultraviolet (UV-A, UV-B) with a wavelength exceeding 300 nm may also be used, or these may be used in combination. It is preferable to exclude the 185 nm wavelength of ultraviolet light, which converts oxygen in the air into ozone, but this wavelength may also be used if necessary.

[0100] Furthermore, when using an ultraviolet LED (Light Emitting Diode) as the ultraviolet light source 45, for example, one may use aluminum gallium nitride (AlGaN). The ultraviolet LEDs can be arranged in a nearly linear manner, or in a plane aligned vertically and / or horizontally to form the ultraviolet radiation section. Of course, the ultraviolet light source 45 may be single rather than multiple.

[0101] The first and second UV-blocking holders 42A and 42B engage with the upper and lower edges of the reflector 44. The reflector 44 is a plate with a substantially arc-shaped cross-section, formed from a metal such as aluminum. The reflector 44 has bent edges 44a on both sides that are bent outward.

[0102] The reflector 44 is installed so that its folded edge 44a abuts against the surface of the support column 43 on the side of the ultraviolet reflection path 47 (the inner diameter side of the ultraviolet sterilization unit 41).

[0103] The reflector 44 has a reflective surface 44b on the side facing the ultraviolet reflection path 47. The reflective surface 44b has an ultraviolet reflective material that repeatedly reflects ultraviolet light irradiated from the ultraviolet light source 45 in a high order. Preferably, the ultraviolet reflective material has a diffuse transmittance of 1% / 1mm or more and 20% / 1mm or less, and a total reflectance in the high-level UV region of 60% / 1mm or more and 99.9% / 1mm or less, and the sum of the diffuse transmittance and the total reflectance in the ultraviolet region is 90% / 1mm or more.

[0104] As ultraviolet reflective materials, materials containing at least one of the following can be used: silver, aluminum, polytetrafluoroethylene (PTFE), silicone resin, quartz glass containing internal bubbles of 0.05 μm to 10 μm, partially crystallized quartz glass containing internal crystal grains of 0.05 μm to 10 μm, alumina sintered bodies with crystal grains of 0.05 μm to 10 μm, mullite sintered bodies with crystal grains of 0.05 μm to 10 μm, magnesium carbonate, barium, hafnium, zirconium, and other oxides.

[0105] The reflective surface 44b may be formed by providing a thin film of metal (silver, aluminum, nickel, copper, etc.) on the inner surface of the reflector 44. Alternatively, the reflector 44 may be formed by depositing an ultraviolet reflective material onto the substrate surface of the reflective surface 44b by vapor deposition, sputtering, or the like.

[0106] Furthermore, when using silver or aluminum as the ultraviolet reflective material for the reflective surface 44b, a protective film that functions as a coating may be applied to the surface to prevent oxidation. In this case, the protective film can be made of a material that does not reduce the reflectivity of the reflective surface 44b, such as acrylic resin, quartz glass, or PTFE. Methods for forming the PTFE protective film include vapor deposition and sputtering.

[0107] Furthermore, the reflective surface 44b may be formed by layering thin films on the surface of the reflector 44. For example, it may be formed by layering thin films of metal, thin films of alloys mainly composed of metal, or films of oxides (aluminum oxide, silicon oxide, titanium oxide, zirconium oxide, etc.). The thickness of each layer of the multilayer film is set, for example, to an integer multiple of 1 / 4 of the wavelength of ultraviolet light (i.e., an odd or even multiple of 1 / 4 of the wavelength).

[0108] Specifically, if the main ultraviolet wavelength to be reflected is set to 253.7 nm, the thickness of one layer of the multilayer film can be set to 63.4 nm, 126.8 nm, 190.3 nm, etc. Of course, the thickness of each layer of the multilayer film can be set as appropriate, and it may be a so-called thick film with a thickness of several tens of micrometers, a so-called thin film with a thickness of several micrometers, or a so-called ultrathin film with a thickness of a few nanometers or less.

[0109] Furthermore, when forming a multilayer film, the surface of the substrate (base material) may be pre-polished to a mirror-like state, and layers with different refractive indices and / or dielectric constants may be formed alternately. In addition, a region with a film of a photocatalytically active substance may be formed on the inner surface of the reflector 44. That is, by generating an active surface through irradiation with ultraviolet light, sterilization, antiviral effects, deodorization, and reduction of toxic substances such as organochlorine compounds and formaldehyde can be achieved. Titanium dioxide and tungsten oxide can be used as photocatalytically active substances.

[0110] Furthermore, the support column 43 has a groove 43a with a concave cross-section formed along its longitudinal direction in the center of its outer surface. Electrical cords, etc. (not shown), for supplying power to the ultraviolet light source 45 via each socket 49 are housed in the groove 43a.

[0111] The ultraviolet sterilization device 1 of this embodiment, configured as described above, removes airborne particles such as dust, pollen, and dirt, as well as malodorous odors, using the filter unit 22 of the air purification unit 2. It then has the function of reducing toxic substances in the fluid, i.e., toxic substances inhaled along with the fluid, within the ultraviolet sterilization unit 41. Here, "fluid" refers to gases such as air as an example. "Toxic substances" include pathogenic microorganisms such as bacteria and viruses, as well as harmful molecules such as formaldehyde VOCs. These are substances that are toxic or harmful to living organisms, the environment, etc., and are transported within the fluid. The reduction of toxic substances means that the toxicity is eliminated or reduced through decomposition, inactivation, sterilization, etc.

[0112] First, the ultraviolet sterilizer 1 is installed in a designated space such as a room. The ultraviolet sterilizer 1 is activated by selectively pressing one of the ON / OFF buttons on the switch unit 55, or by pressing an airflow switching button that switches between multiple airflow levels. The motor 53 of the ultraviolet sterilizer 1 is driven at a predetermined number of rotations per unit time based on the selected airflow. The flow generation unit 54 then rotates at a predetermined rotational speed.

[0113] As a result, fluid flow is generated inside the ultraviolet sterilizer 1. The ultraviolet sterilizer 1 draws in air as a fluid from the air purification unit 2, removes relatively large suspended particles and malodorous odors, and then discharges the air, which has had toxic substances reduced in the base unit 4, from the exhaust unit 5. When the fluid generation unit 54 rotates, the air, which is the fluid in the predetermined space in which it is installed, is drawn into the device via the air purification unit 2.

[0114] The ultraviolet sterilizer 1 then reduces the toxic substances and discharges the air from the exhaust unit 5. The air is drawn into the base unit 4 from the top of the ultraviolet sterilizer 1 via the air purification unit 2 and the intake flow unit 3. The air then flows down the inside of the ultraviolet sterilizer 1 and is discharged from the bottom.

[0115] Specifically, the air taken into the ultraviolet sterilizer 1 passes through the filter unit 22 of the air purification unit 2 and flows down toward the intake flow unit 3. That is, the air taken into the ultraviolet sterilizer 1 flows down in the order of pre-filter 23, HEPA filter 24, and deodorizing filter 25 and is supplied to the intake flow unit 3.

[0116] As a result, the pre-filter 23 removes suspended particles with a particle size of 5 μm or larger, and the HEPA filter 24 removes suspended particles with a particle size of 0.3 μm or larger. Subsequently, the granulated activated carbon 26 of the deodorizing filter 25 adsorbs and removes harmful chemical substances and / or malodorous odors from the air (fluid). As a result, air from which suspended particles and malodorous odors have been removed is taken into the intake flow unit 3.

[0117] The air taken into the intake flow unit 3 flows down along the outer surface of the pressure loss reduction section 32 of the intake flow unit 3. That is, the air enters the introduction passage 34, which is the gap between the pressure loss reduction section 32 and the surrounding section 33. The air then flows from the introduction passage 34 through the UV blocking filter 46, etc., attached to the first UV blocking holder 42A of the ultraviolet sterilization unit 41, and into the ultraviolet reflection passage 47.

[0118] Furthermore, the intake flow unit 3 is provided with the tip 36 of the pressure loss reduction section 32 at a position radially opposite to the constricted section 37, and the enlarged diameter section 38 of the surrounding section 33 at a position radially opposite to the bulging section 35. As a result, the intake flow unit 3 has an introduction passage 34 that secures space for the inhaled air to pass through. Therefore, the intake flow unit 3 reduces the effect of pressure loss on the air as it passes through the introduction passage 34, and suppresses a decrease in air flow rate and velocity.

[0119] The air that flows into the ultraviolet reflection path 47 passes through the high-level UV region formed by ultraviolet light irradiated from the ultraviolet light source 45 within the ultraviolet reflection path 47 of the ultraviolet sterilization unit 41 and flows down toward the exhaust unit 5.

[0120] Furthermore, in the high-level UV region, ultraviolet light irradiated from the ultraviolet light source 45 is repeatedly reflected by the reflective surface 44b of the reflector 44, meaning that the total dose of ultraviolet light in the ultraviolet reflection path 47 increases due to higher-order reflections. In other words, a high-level UV region is formed inside the ultraviolet sterilization unit 41, creating a high-density, high-dose ultraviolet region.

[0121] Therefore, in the ultraviolet sterilization unit 41, toxic substances in the air flowing down from top to bottom pass through the high-level UV region and are exposed to high-density and high-dose ultraviolet light, which neutralizes them. That is, within the high-level UV region formed in the ultraviolet reflection path 47, toxic substances are exposed to high-density and high-dose ultraviolet light, and are instantly decomposed and / or inactivated and / or sterilized, thus neutralizing them.

[0122] The air that flows down the ultraviolet reflection path 47 of the ultraviolet sterilization unit 41 passes through the ultraviolet blocking filter 46 provided in the second UV blocking holder 42B and enters the exhaust unit 5. The air then moves along the discharge path 52 of the exhaust unit 5 and is discharged to the outside of the ultraviolet sterilization device 1 from the exhaust port 51.

[0123] Furthermore, the discharge passage 52 is curved in a spiral radial shape to match the airflow generated by the flow generation section 54. As a result, the pressure loss of the air discharged from the exhaust port 51 is reduced.

[0124] Furthermore, the UV-blocking filters 46 provided in the first and second UV-blocking holders 42A and 42B are formed from an assembly of multiple neatly arranged cells and are honeycomb cores having a predetermined thickness. Therefore, air passes through the UV-blocking filter 46 along the axial direction of the pores of each cell. In other words, the UV-blocking filter 46 straightens the airflow in a certain direction through the pores of the cells. Moreover, the UV-blocking filter 46 does not obstruct the airflow through the pores of each cell and hardly reduces the airflow velocity.

[0125] In particular, the UV-blocking filter 46 provided in the first UV-blocking holder 42A straightens the air from the intake flow unit 3 to a laminar flow. As a result, the laminar flowing air flows almost linearly down the ultraviolet reflection path 47 of the ultraviolet sterilization unit 41. This also reduces the pressure loss of the air passing through the ultraviolet reflection path 47 of the ultraviolet sterilization unit 41, and suppresses the decrease in flow rate and flow velocity.

[0126] In the ultraviolet sterilization device 1, the UV blocking filter 46 is arranged so that its pores extend radially inward at a predetermined angle θ from the ultraviolet reflection path 47 side toward the intake flow unit 3 (or exhaust unit 5) side, thereby blocking ultraviolet rays irradiated from the ultraviolet light source 45. In other words, in the ultraviolet sterilization device 1, the UV blocking filter 46 blocks ultraviolet rays with the inner walls that form the pores of each cell, preventing ultraviolet rays from leaking to the outside.

[0127] Furthermore, the UV-blocking filter 46 may be provided with low-reflection areas on the cylindrical inner wall surface that forms the pores of each cell to suppress the reflection of ultraviolet rays. For surface treatments such as preventing reflection of ultraviolet rays and absorbing ultraviolet rays, the low-reflection areas can be subjected to, for example, film formation by hot-dip plating, vacuum plating, electroless plating, electrolytic plating, anodizing, or coating with acrylic paints, pure acrylic paints, urethane paints, silicone paints, fluorine paints, inorganic paints, glass coatings, etc.

[0128] In particular, the UV-blocking filter 46 may have an extremely low reflectivity surface by providing the cylindrical inner wall surface that forms the pores of each cell with a large number of fine irregularities, dendritic structures, etc. Furthermore, if the inner wall surface of the pores of each cell of the UV-blocking filter 46 is treated with a black surface, it can absorb ultraviolet rays and further improve the anti-reflection effect of ultraviolet rays.

[0129] As described above, the ultraviolet sterilization device 1 prevents ultraviolet rays from the ultraviolet light source 45 from leaking out of the ultraviolet sterilization unit 41 by blocking them with the UV blocking filter 46. In other words, the ultraviolet sterilization device 1 reflects the ultraviolet rays irradiated from the ultraviolet light source 45 into the ultraviolet reflection path 47 by the reflective surface 44b of the reflector 44, and the UV blocking filter 46 prevents these ultraviolet rays from leaking out of the ultraviolet sterilization unit 41.

[0130] Furthermore, even if ultraviolet light were to pass through the UV-blocking filter 46, the bulging portion 35 and / or constricting portion 37 of the intake flow unit 3 would block the ultraviolet light that had passed through the UV-blocking filter 46, reliably preventing it from leaking outside the device. As a result, the ultraviolet sterilization device 1 can prevent users from accidentally looking directly at the ultraviolet light source.

[0131] Incidentally, in the ultraviolet sterilization unit 41, at least the surface of the substrate of each component exposed within the ultraviolet reflection path 47 is formed from inorganic material and / or inorganic compound. Specifically, in the ultraviolet sterilization unit 41, the first and second UV blocking holders 42A and 42B, the support column 43, the reflector 44, and the UV blocking filter 46, which form the ultraviolet reflection path 47, are made of resin with a surface treatment of metal and / or inorganic material and / or inorganic compound.

[0132] If the components of the ultraviolet sterilization unit 41 are, for example, a resin substrate, a surface treatment is performed by plating, which deposits a metal film to form an inorganic and / or inorganic compound film. Examples of metals that can be used to form a film on the surface of the resin substrate include, but are not particularly limited to, chromium, nickel, chromate, tin, zinc, aluminum, iron, gold, silver, copper, titanium, or alloys thereof. Of course, the entire surface of the resin substrate may be surface-treated by plating.

[0133] Furthermore, the resin substrate, which has been surface-treated by plating, may have a mirror-finished surface to create a highly reflective area that enhances the reflectivity of ultraviolet rays. As for the mirror finish treatment, a highly reflective area can be formed by polishing the surface of the resin substrate and applying chrome plating over a bright nickel plating base, or by depositing a film of aluminum, iron, gold, silver, copper, titanium, etc., onto the surface of the resin substrate by vapor deposition, sputtering, etc.

[0134] Furthermore, the resin substrate may have a low-reflectance area on its surface to reduce the reflectivity of ultraviolet rays. The low-reflectance area can be treated with a black surface treatment, and electrolytic methods such as black electrolytic chromium plating, black electrolytic nickel plating, black electrolytic tin alloy plating, and black electrodeposition coating can be applied. For black film formation using electroless plating, for example, there is black electroless nickel plating, in which the black film can be obtained in the electroless nickel plating state or by oxidation treatment. Methods for obtaining a black film in the electroless nickel plating state include black electroless nickel-phosphorus-zinc alloy plating, black electroless pure nickel plating using hydrazine as a reducing agent, and black electroless Ni-Sn plating.

[0135] Furthermore, the resin substrate may be made by attaching films of polyethylene terephthalate (PET), polyvinyl chloride (PVC), polystyrene (PS), acrylonitrile butadiene styrene (ABS), acrylonitrile styrene (AS), methyl methacrylate (PMMA), polyethylene (PE), polypropylene (PP), urea resin (UF), polyacetal (POM), polyamide (PA), etc., to a surface treated with inorganic materials or inorganic compounds to provide a low-reflectance area, or the above films may be attached in overlap with the low-reflectance area.

[0136] Furthermore, black surface treatments may include blackening using alkaline coloring methods, sulfide treatment, chemical conversion treatments such as black chromate, and dyeing of anodized coatings. In addition, the above-mentioned high-reflectivity and low-reflectivity areas are not limited to resin substrates but can also be applied to metal substrates.

[0137] As described above, in this embodiment, the ultraviolet sterilization apparatus 1 has at least the surface of the substrate of each component exposed to the ultraviolet reflection path 47 by the ultraviolet sterilization unit 41 made of inorganic material and / or inorganic compound. Therefore, even when the substrate (base material) of each component forming the ultraviolet sterilization unit 41 is exposed to high-level UV radiation under high density and high dose ultraviolet light that sterilizes and disinfects the fluid passing through the ultraviolet reflection path 47, it does not deteriorate in terms of UV resistance, and no decrease in physical properties, changes in appearance, etc., are prevented.

[0138] Furthermore, the various components exposed to the ultraviolet reflection path 47 are surface-treated by plating, which deposits metal to form a film, thereby providing ultraviolet resistance. Therefore, they can be formed from inexpensive, general-purpose plastics. Consequently, the ultraviolet sterilization device 1 can reduce the manufacturing cost of the ultraviolet sterilization unit 41. Of course, the various components of the ultraviolet sterilization unit 41 are not limited to general-purpose plastics; they may also be formed from metals, engineering plastics, etc.

[0139] Therefore, the UV sterilizer 1 can reduce maintenance costs because it eliminates the need to replace UV-degraded parts of the UV sterilization unit 41. Furthermore, the UV sterilizer 1 can prevent the shortening of product lifespan due to embrittlement and decreased mechanical durability of the parts of the UV sterilization unit 41.

[0140] As described above, in the ultraviolet sterilization device 1, airborne particles and malodorous odors are removed by the pre-filter 23, HEPA filter 24, and deodorizing filter 25 of the air purification unit 2, and the air from which airborne particles and malodorous odors have been removed is supplied to the base unit 4 via the intake flow unit 3. That is, the air supplied to the base unit 4 contains relatively small-particle toxic targets such as viruses and bacteria that are not captured by the filter unit 22, which includes the pre-filter 23, HEPA filter 24, and deodorizing filter 25.

[0141] As the air supplied to the base unit 4 flows from top to bottom inside the ultraviolet sterilization unit 41, it is exposed to high-density and high-dose ultraviolet light in the high-level UV region formed in the ultraviolet reflection path 47. As a result, toxic substances contained in the air are instantly decomposed and / or inactivated and / or sterilized, reducing their presence.

[0142] The air that flows down the ultraviolet reflection path 47 of the ultraviolet sterilization unit 41 then moves along the discharge path 52 of the exhaust unit 5 and is discharged to the outside of the ultraviolet sterilization device 1 from the exhaust port 51. As a result, the air discharged to the outside of the ultraviolet sterilization device 1 is free of suspended particles and malodorous substances, and toxic substances have been reduced, preventing large suspended particles and foreign substances such as harmful chemicals and / or malodorous substances from being scattered to the outside.

[0143] As described above, three ultraviolet sterilizers 1 are installed inside the enclosure 110. In the toxic particle elimination device 100, for example, three of these devices are installed inside the enclosure 110. As shown in Figures 14 and 15, air is drawn in from the upper opening 101a of the enclosure 110 by the operation of each ultraviolet sterilizer 1. Figure 14 is a schematic front view of the toxic particle elimination device showing the state in which the three ultraviolet sterilizers installed inside the enclosure are in operation, and Figure 15 is a schematic side view of the toxic particle elimination device showing the state in which the three ultraviolet sterilizers installed inside the enclosure are in operation.

[0144] At this time, the pre-purification air, which is contaminated air containing toxic targets such as viruses and bacteria and / or airborne particles and malodorous odors, is drawn into the space A1 of the enclosure 110 from the upper opening 101a via the ventilation cover 104 by the drive of each ultraviolet sterilization device 1.

[0145] First, the pre-cleaning air is drawn into each operating ultraviolet sterilizer 1 and passes through the intake flow unit 3, where airborne particles and malodorous odors are removed. The pre-cleaning air, which contains toxic substances, passes through the base unit 4 of each ultraviolet sterilizer 1, where it is instantly decomposed and / or inactivated and / or sterilized, becoming cleaned air from which pathogens have been reduced. This cleaned air is then discharged from the exhaust port 51 of each ultraviolet sterilizer 1 into the space A2 of the enclosure 110. This cleaned air discharged into the space A2 of the enclosure 110 is then exhausted to the outside of the enclosure 110 through the rear opening 101c of the housing 101.

[0146] The toxic particle reduction device 100 configured as described above can be used by installing it inside a simple booth 151, such as a tent, which is made up of a transparent sheet and a frame, as shown in Figure 16. Figure 16 is a perspective view showing a toxic particle reduction negative pressure unit with the toxic particle reduction device installed inside a simple booth.

[0147] For example, by placing the toxic particle elimination device 100 inside a simple booth 151 with dimensions of 3.0m wide x 3.0m deep x 2.4m high, it can function as a simple negative pressure room that can be installed to cover a patient's bed 153 in a general patient room of a medical facility such as a hospital. Furthermore, the toxic particle elimination device 100 and the simple booth 151 can constitute a toxic particle elimination negative pressure unit 150. In this context, the toxic particle elimination device 100 becomes a toxic particle elimination negative pressure device.

[0148] As shown in Figures 17 and 18, the simple booth 151 has an annular female connector portion 152 on one side of the sheet body wall that connects to the male connector portion 109 of the enclosure 110. The simple booth 151 has a hole carved out in the wall portion where the female connector portion 152 is provided. Figure 17 is a partial cross-sectional view showing the state before the male connector portion of the enclosure and the female connector portion of the simple booth are connected, and Figure 18 is a partial cross-sectional view showing the state after the male connector portion of the enclosure and the female connector portion of the simple booth are connected.

[0149] The male connector portion 109 has a tapered outer surface. The female connector portion 152 has an inner surface that is tapered and substantially similar in shape to the outer surface of the male connector portion 109. As a result, the outer surface of the male connector portion 109 and the inner surface of the female connector portion 152 are connected in surface contact.

[0150] The male connector portion 109 of the device-side exhaust connector and the female connector portion 152 of the booth-side exhaust connector are configured such that, for example, one is made of a ferromagnetic material such as iron and the other is equipped with a magnet (not shown), and they are spontaneously attracted and connected by magnetic force. That is, when the male connector portion 109, which is the exhaust port of the toxic particle reduction device 100, is brought close to the female connector portion 152 of the simple booth 151, which is a negative pressure booth, they are attracted to each other by magnetic force and sealed together. Alternatively, one of the male connector portion 109 or the female connector portion 152 may be made of a ferromagnetic material and the other may be magnetized, or both may be magnetized with different polarities so that they attract each other.

[0151] As a result, the toxic particle reduction negative pressure unit 150 does not require the connection of an exhaust duct to the male connector 109, which serves as the exhaust port for the toxic particle reduction device 100. Consequently, exhaust duct installation work is unnecessary. Furthermore, the connection between the male connector 109 and the female connector 152 is not limited to a magnetic connection, but may also be a mechanical connection such as a screw connection or snap fit.

[0152] Furthermore, the toxic particle reduction negative pressure unit 150 discharges purified air from the toxic particle reduction device 100, which has been detoxified from contaminated air containing toxic targets such as viruses and bacteria, and / or airborne particles and malodorous odors. As a result, the toxic particle reduction negative pressure unit 150 creates negative pressure inside the simple booth 151 when the toxic particle reduction device 100 is driven.

[0153] The toxic particle reduction negative pressure unit 150 can prevent infection to other patients, hospital staff, visitors, etc., even when a patient with or suspected of having an airborne infectious disease such as measles, chickenpox, or tuberculosis is isolated and the purified air, detoxified by the ultraviolet sterilizer 1, is exhausted indoors. Furthermore, the toxic particle reduction negative pressure unit 150 is naturally effective against aerosol infections and droplet infections of SARS-CoV-2, influenza viruses, etc., contained in exhaled breath.

[0154] As described above, the toxic particle reduction device 100, enclosure 110, and toxic particle reduction negative pressure unit 150, which can be used as a toxic particle reduction negative pressure device in this embodiment, do not require any construction work to install new equipment for exhausting to the outside of the facility, even when installed indoors in medical facilities such as nursing homes, hospitals, and clinics.

[0155] Therefore, the toxic particle suppression device 100, enclosure 110, and toxic particle suppression negative pressure unit 150 can be configured to be installed indoors in medical facilities such as nursing homes, hospitals, and clinics, without requiring construction work to install new equipment for exhausting to the outdoors.

[0156] In medical facilities such as nursing homes, hospitals, and clinics, adopting the toxic particle reduction device 100, enclosure 110, and toxic particle reduction negative pressure unit 150 eliminates the need for additional construction work such as exhaust systems to the outside of the facility. Furthermore, even in medical facilities that lack exhaust systems to the outside, a simple negative pressure booth can be immediately set up in an emergency using the toxic particle reduction negative pressure unit 150.

[0157] The toxic particle reduction device 100, enclosure 110, and toxic particle reduction negative pressure unit 150 do not require construction work to install new equipment for exhausting to the outside, thus minimizing unnecessary costs, and allow for the immediate and rapid establishment of a negative pressure booth indoors in medical facilities such as nursing homes, hospitals, and clinics during emergencies.

[0158] Of course, it goes without saying that one end of an exhaust duct, such as a flexible duct, may be connected to the outside of the female connector part 152, which is the booth-side exhaust connector, and the other end of the exhaust duct may be connected to an outdoor exhaust vent provided in a wall or window, thereby configuring the system for outdoor exhaust.

[0159] Furthermore, as shown in Figures 19 and 20, when installing only one or two ultraviolet sterilizers 1, which are air purifiers, in the enclosure 110, the toxic particle reduction device 100 can separate the two spaces A1 and A2 by fitting, for example, a roughly disc-shaped lid 135, to close the device holding parts 132 and 134 of the partition material 131 where the ultraviolet sterilizers 1 are not installed. The ultraviolet sterilizers 1 that are not installed in the toxic particle reduction device 100 can be used as other toxic particle reduction devices or used on their own.

[0160] Figure 19 is a schematic perspective view showing a toxic particle elimination system in which two ultraviolet sterilizers are arranged in an enclosure, and Figure 20 is a schematic perspective view showing a toxic particle elimination system in which a single ultraviolet sterilizer is arranged in an enclosure.

[0161] Furthermore, although the toxic particle reduction device 100 is exemplified as having an ultraviolet sterilization device 1 placed inside the enclosure 110, it is not limited to this configuration, and a circulator, blower, intake device, blower, etc. may also be installed. In addition, the toxic particle reduction device 100 can be installed not only in the simple booth 151 of the toxic particle reduction negative pressure unit 150, but also in temporary rooms, etc.

[0162] Furthermore, the toxic particle elimination device 100 can also be used by connecting an exhaust duct 160 to a male connector 109 provided in the rear opening 101c, as shown in Figure 21. Figure 21 is a rear perspective view showing the configuration of the toxic particle elimination device with the exhaust duct connected to the male connector of the enclosure.

[0163] The exhaust duct 160 has a duct connector portion 161 at one end that is airtightly connected to a male connector portion 109. The male connector portion 109 may be configured to be spontaneously attracted and connected to the duct connector portion 161 by magnetic force, similar to the female connector portion 152 described above.

[0164] Furthermore, the exhaust duct 160 may be configured to be airtightly connected to the female connector portion 152 of the simple booth 151, as shown in Figure 22. Figure 22 is a schematic side view of a toxic particle reduction negative pressure unit showing the exhaust duct connected to the female connector portion of the simple booth.

[0165] In this case, the female connector portion 152 has an annular connecting portion 154 formed to protrude outside the simple booth 151. The annular connecting portion 154 is configured to be detachably attached to the duct connector portion 161 of the exhaust duct 160. The annular connecting portion 154 may be configured to be spontaneously attracted and connected to the duct connector portion 161 by magnetic force, similar to the female connector portion 152 described above, or it may be configured to be airtightly connected by screw coupling.

[0166] In this configuration, an exhaust duct 160, such as a flexible duct, is connected to the outside of the male connector 109 of the toxic particle reduction device 100 or the female connector 152, which is the booth-side exhaust connector of the simple booth 151, and the other end of the exhaust duct 160 is connected to an outdoor exhaust port provided in a wall or window, allowing for outdoor exhaust.

[0167] Furthermore, as shown in Figures 23 and 24, the male connector portion 109 provided on the enclosure 110 has multiple magnets 115 in a ring shape or circumferentially positioned opposite the end face of the female connector portion 152 of the simple booth 151. The female connector portion 152 is spontaneously attracted by the magnetic force of the magnets 115, resulting in an airtight connection. The tapered outer surface of the male connector portion 109 and the tapered inner surface of the female connector portion 152, which is attracted to the magnets 115, are in surface contact to form an airtight connection.

[0168] Figure 23 is a partial cross-sectional view showing the state before the male connector portion of the enclosure with the magnet is connected to the female connector portion of the temporary booth, and Figure 24 is a partial cross-sectional view showing the state after the male connector portion of the enclosure with the magnet is connected to the female connector portion of the temporary booth.

[0169] The magnet 115 may also be provided on the female connector portion 152 of the simple booth 151, as shown in Figures 25 and 26. Figure 25 is a partial cross-sectional view showing the state before the male connector portion of the enclosure and the female connector portion of the simple booth with the magnet are connected, and Figure 26 is a partial cross-sectional view showing the state after the male connector portion of the enclosure and the female connector portion of the simple booth with the magnet are connected.

[0170] In this case, multiple magnets 115 are provided in a ring shape or at approximately equal intervals in the circumferential direction on the inner circumference side of the female connector portion 152, which faces the end face of the male connector portion 109 of the enclosure 110. The magnets 115 provided on the female connector portion 152 are attracted to the end face of the male connector portion 109.

[0171] As a result, the tapered outer surface of the male connector portion 109 and the tapered inner surface of the female connector portion 152 are in surface contact, creating an airtight connection. Furthermore, by providing the magnet 115 in the female connector portion 152 of the simple booth 151, the female connector portion 152 can be formed from lightweight materials such as PVC (polyvinyl chloride), PE (polyethylene), polycarbonate, or closed-cell foam resin.

[0172] In other words, if the female connector portion 152 of the simple booth 151 is formed from a metal such as a magnetic material, it will need to have the strength and rigidity to support its weight. Since the simple booth 151 is a thin sheet, it is desirable that the female connector portion 152 be lightweight. Furthermore, it is preferable that the female connector portion 152 be lightweight so that it can spontaneously attract onto the male connector portion 109.

[0173] Furthermore, as described above, the female connector portion 152 here has an annular connector portion 154 that protrudes outside the simple booth 151. Then, as shown in Figure 27, the duct connector portion 161 of the exhaust duct 160 is connected to the annular connector portion 154 of the female connector portion 152. Figure 27 is a schematic side view of a toxic particle reduction negative pressure unit showing the state in which the exhaust duct that exhausts to the outside is connected to the female connector portion of the simple booth.

[0174] Furthermore, the exhaust duct 160 can be installed outdoors through a window or the like to exhaust the exhaust end to the outside of a medical facility such as a nursing home, hospital, or clinic, or it can be connected to an outdoor exhaust port provided in a wall or window for outdoor exhaust. The exhaust duct 160 does not have a duct connector portion 161, and may be configured to directly cover the outer circumference of the annular connection portion 154 and be secured to the annular connection portion 154 by fastening and fixing members such as hose clamps or fasteners to prevent it from coming loose.

[0175] Incidentally, when not in use, the toxic particle reduction negative pressure unit 150 can house a sheet-type simple booth 151 and a case 155 containing the frame (not shown) of the simple booth 151 inside the enclosure 101 of the enclosure 110, as shown in Figure 28. Figure 28 is a front perspective view showing the configuration of the toxic particle reduction device with the simple booth housed inside.

[0176] Thus, when not in use, the toxic particle reduction and extinguishing negative pressure unit 150 can be stored as a single unit in a warehouse or the like, comprising the enclosure 110, the simple booth 151, and the frame. Therefore, the toxic particle reduction and extinguishing negative pressure unit 150 has the advantage of being easy to transport and being able to be immediately assembled by removing the simple booth 151 and the frame from inside the enclosure 110 when needed.

[0177] In this case, in order to prevent the mounting tray 120 and partition wall 130, which are made of foam or the like, from collapsing, a holding means (not shown) is provided to hold the simple booth 151 and case 155 at an intermediate vertical position on the enclosure 110.

[0178] The invention described in the above-described embodiments is not limited to those embodiments, and various modifications can be made in the implementation stage without departing from the gist of the invention. Furthermore, the above-described embodiments include inventions at various stages, and various inventions can be extracted by appropriate combinations of the multiple constituent elements disclosed.

[0179] For example, if the problem described can be solved and the effects described can be obtained even if some of the constituent elements shown in the embodiment are deleted, then the configuration with the deleted constituent elements can be extracted as an invention.

[0180] Incidentally, ultraviolet sterilization devices that irradiate fluids such as air and water with ultraviolet light to kill or sterilize (inactivate) toxic substances are known. For example, Japanese Patent Publication No. 2024-22373 discloses a virus inactivation device equipped with an ultraviolet lamp that irradiates ultraviolet light to inactivate viruses in a gas, and inactivates viruses in a gas that has passed through an air tank.

[0181] This virus inactivation device comprises a first fan and intake valve set for drawing in potentially contaminated gas into an air tank, and a second fan and exhaust valve set for discharging the sterilized gas from the air tank. The virus inactivation device controls the irradiation time of the inhaled gas with ultraviolet light by controlling these sets to control the time the gas remains in the air tank.

[0182] The virus inactivation device disclosed in Japanese Patent Publication No. 2024-22373 draws gas into the air tank by rotating a first fan and opening an intake valve to the inside of the air tank, and discharges gas to the outside of the air tank by rotating a second fan and opening an exhaust valve to the outside of the air tank.

[0183] In this configuration, when this virus inactivation device draws in a gas containing viruses, etc., into the air tank via the intake valve, it also draws in large suspended particles such as dust, pollen, and general pollutants, as well as harmful chemical substances and / or malodorous odors. After irradiation with ultraviolet light, the large suspended particles, harmful chemical substances and / or malodorous odors are discharged out of the air tank through the discharge valve along with the gas in which the viruses have been sterilized.

[0184] Therefore, this virus inactivation device had the problem of taking in large airborne particles such as dust, pollen, and common pollutants, as well as foreign substances such as harmful chemicals and / or foul odors, and then scattering the taken-in foreign substances into the room.

[0185] Therefore, the present invention has been made in view of the above problems, and can provide an ultraviolet sterilization device that can inactivate and deactivate toxic targets such as viruses and bacteria without scattering foreign matter to the outside.

[0186] Ultraviolet sterilization devices have the following characteristics:

[0187] One embodiment of an ultraviolet sterilization apparatus includes a filter unit for removing foreign matter from a fluid taken in from the outside, an ultraviolet light source and a reflector, an ultraviolet reflection path through which the fluid from which the foreign matter has been removed by the filter unit passes, and a high-level UV region within the ultraviolet reflection path through which ultraviolet light irradiated from the ultraviolet light source is repeatedly reflected by the reflector, and in a high-order reflected ultraviolet space, toxic substances contained in the fluid from which the foreign matter has been removed are decomposed and / or inactivated and / or sterilized.

[0188] In the ultraviolet sterilization apparatus according to the present invention, the filter unit includes a first filter that removes suspended particles of a first particle size or larger from the fluid, a second filter that removes suspended particles of a second particle size or larger that are smaller than the first particle size from the fluid that has passed through the first filter, and a third filter that adsorbs and removes harmful chemical substances and / or malodorous odors from the fluid that has passed through the second filter.

[0189] The ultraviolet sterilization apparatus according to the present invention has a cylindrical portion in which the first filter, the second filter, and the third filter are disposed inside.

[0190] The ultraviolet sterilization apparatus according to the present invention comprises a main body having a high-level UV region, a suction unit disposed on the upper part of the main body for drawing the fluid into the main body, and an air purification unit configured to be detachable from the suction unit, wherein the cylindrical portion is disposed within the air purification unit and configured to be detachable from the air purification unit.

[0191] In the ultraviolet sterilization apparatus according to the present invention, the inside of the air purification unit has a sealed structure formed by the cylindrical part, the first filter, the second filter, and the third filter.

[0192] In the ultraviolet sterilization apparatus according to the present invention, the first filter, the second filter, and the third filter are detachable from and replaceable from the cylindrical portion.

[0193] In the ultraviolet sterilization apparatus according to the present invention, the second filter is a HEPA filter, and the HEPA filter is folded in an accordion shape and arranged in the cylindrical portion.

[0194] In the ultraviolet sterilization apparatus according to the present invention, the third filter has a plurality of pores and at least one activated carbon contained inside the plurality of pores.

[0195] In the ultraviolet sterilization apparatus according to the present invention, the activated carbon is granular activated carbon or granulated activated carbon. [Explanation of Symbols]

[0196] 1...Ultraviolet sterilizer 2…Air purification unit 3…Intake flow unit 4…Base Unit 5… Exhaust unit 20…Exterior cover 21… Upper opening 100…Toxic particle reduction device 101... Cabinet 101a…Top opening 101b…Front opening 101c…Back opening 101d...Convex frame 102, 103... Doors 104...Ventilated cover 105...Handle 106... Caster (wheel) 107...Inlet connector 108... Changeover switch 109...Male connector part 110...Enclosure 113... Rod latch lock 114...Latch lever 115... Magnet 120... Mounting tray 121...Device mounting recess 122, 123… Groove 130...Bulkhead 131,133…Partition material 132,134...Device holding part 135... Lid 150... Negative pressure unit for reducing toxic particles 151... Temporary booth 152...Female connector section 153…Hospital bed 154... Ring-shaped connection 155...case 160... Exhaust duct 161... Duct connector section A1,A2…Space

Claims

1. A housing in which one or more air purifiers are arranged in the internal space, One or more partitions separate the above-mentioned internal space, The first space, separated by the partition wall, is where the intake section of the above-mentioned air purifier is located. An air intake port is provided in the above-mentioned housing, which communicates with the above-mentioned first space, The exhaust section of the above-mentioned air purifier is located in a second space separated by the above-mentioned partition wall, An exhaust port is provided in the above-mentioned enclosure, which communicates with the above-mentioned second space, An enclosure characterized by having [a certain feature].

2. The enclosure according to claim 1, characterized in that it has positioning means disposed at the bottom of the housing for determining the installation position of the air purifier on the housing.

3. The enclosure according to claim 1, characterized in that it has vibration damping means disposed at the bottom of the housing for absorbing vibrations of the air purifier.

4. The enclosure according to claim 1, characterized in that it has a tray disposed at the bottom of the housing that determines the installation position of the air purifier on the housing and absorbs vibrations of the air purifier.

5. The enclosure according to claim 1, characterized in that it has a holding means disposed in the partition wall for holding the air purifying device.

6. An enclosure according to any one of claims 1 to 5, The above air purifier and, A toxic particle reduction device characterized by having the following features.

7. A toxic particle reduction and elimination negative pressure device characterized by having a toxic particle reduction device according to claim 6, which is placed inside a negative pressure booth and creates a negative pressure inside the negative pressure booth.

8. A toxic particle reduction and extinguishing negative pressure device according to claim 7, The negative pressure booth in which the above-mentioned toxic particle reduction and elimination negative pressure device is installed, A negative pressure unit for reducing toxic particles, characterized by having the following features.

9. The device-side exhaust connector of the toxic particle reduction / extraction negative pressure device, A booth-side exhaust connector provided in the negative pressure booth is sealed and connected to the device-side exhaust connector, A toxic particle reduction negative pressure unit according to claim 8, characterized by having the following features.

10. The toxic particle reduction negative pressure unit according to claim 9, characterized in that the exhaust connector on the device side and the exhaust connector on the booth side are connected by magnetic force.

11. The toxic particle reduction and extinguishing negative pressure unit according to claim 9, characterized in that the booth-side exhaust connector has a duct connection portion that can be connected to a duct.

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