Air suction and purification device

Abstract

To provide a small portable air suction purifier that collects droplets with a high performance.SOLUTION: An air suction purifier 1 is composed of: a screen 2 having a first air inflow part 4 that allows inflow of external air, and an air flowing part 3 that flows the inflow air 9; an air purification part 10 into which the inflow air 9 flows from the screen 2, and which sterilizes or inactivates miscellaneous bacteria and viruses contained in the inflow air 9 with deep ultraviolet rays; a deep ultraviolet emitter 11 that is arranged in the air purification part 10 and emits deep ultraviolet rays; a first purified air discharge part 13 that is arranged in the air purification part 10 and discharges the inflow air 9 purified in the air purification part 10; and an exhaust fan 12 that is arranged near the first purified air discharge part 13 and sucks the external air from the first air inflow part 4 into the air purification part 10 through the air flowing part 3.SELECTED DRAWING: Figure 1

Description

Technical Field

[0001] The present invention relates to an air suction purification device for purifying indoor air, particularly for sterilizing and inactivating viruses and various bacteria.

Background Art

[0002] In recent years, due to the emergence of new viruses such as the novel coronavirus, the risk of infection caused by droplets scattered in the air during conversations, coughing, and sneezing has become a social problem.

[0003] Although wearing masks and face guards can reduce the risk of virus infection by a certain percentage, as long as droplets containing viruses and various bacteria continue to float in the air, there remains a risk of infection by various viruses and bacteria through directly inhaling them or attaching them to mucous membranes such as eyes and noses.

[0004] As a countermeasure against the risk of virus infection in meetings and consultations, the number of cases where acrylic plates are installed on desks and conversations are carried out through the acrylic plates is increasing. However, when the dimensions of the installed acrylic plates are insufficient due to individual height differences, or when conversations are conducted with a slightly upward gaze, or coughing and sneezing occur, the droplets can easily reach the other side beyond the acrylic plate. Therefore, the risk of infection by viruses and the like cannot be significantly reduced only by installing acrylic plates, and the risk of virus infection remains high.

[0005] In addition, when droplets containing viruses and various bacteria float in the air, a situation may occur where they ride on the air currents of air conditioners and spread throughout the room over time, further increasing the risk of virus infection.

[0006] On the other hand, many devices for purifying indoor air have been released, including air purifiers equipped with various types of filters, such as HEPA filters (High Efficiency Particulate Air Filters), and air purifiers that use hypochlorous acid. However, these devices require a certain amount of time to purify indoor air, so they have limitations in combating viruses that can cause infection in seconds.

[0007] Furthermore, while remote conferencing using ZOOM® and Skype®, as well as working from home, have been increasing in recent years, opportunities for meetings with several people or for employees to go to the workplace to perform daily tasks will not completely disappear. For this reason, it has become urgent to implement measures to prevent virus transmission in offices where many people work together, in poorly ventilated areas, and in restaurants and other places where people eat. Against this backdrop, an air intake and purification device that disinfects indoor air has been proposed (see Patent Documents 1 and 2).

[0008] Patent Document 1 describes an air suction and purification device configured to capture and remove viruses and bacteria from the air using a HEPA filter.

[0009] Furthermore, Patent Document 2 describes an air suction and purification device that has a configuration in which air is passed through a disinfecting filter containing hypochlorous acid. [Prior art documents] [Patent Documents]

[0010] [Patent Document 1] Japanese Patent Publication No. 2015-124914 [Patent Document 2] Japanese Patent Publication No. 2016-202191 [Overview of the project] [Problems that the invention aims to solve]

[0011] However, with the conventional devices described above, if it takes several minutes or more to capture viruses or bacteria in the air, the viruses or bacteria will remain suspended in the air for several hours afterward. As a result, there is a higher probability that people working in the room will inhale air containing viruses or bacteria directly, or that the air will come into contact with the mucous membranes of their eyes or nose, increasing the likelihood of infection. In a sealed room, if droplets are dispersed into the room by airflow from an air conditioner or similar device, it takes several tens of minutes or more to capture the dispersed droplets, during which time there is a possibility of infection with the virus.

[0012] Furthermore, even when wearing a mask or face shield, as long as virus-containing droplets and germs are floating in the air, people working in that room can become infected with the virus by directly inhaling air containing viruses or germs, or by having them come into contact with the mucous membranes of their eyes or nose. Furthermore, even if virus countermeasures are installed in meeting rooms where face-to-face meetings take place, it will be difficult to install them in all locations.

[0013] This invention has been made in view of the above circumstances, and aims to provide an air suction and purification device that collects airborne droplets, which prevents droplets released into the air from directly reaching the person being spoken to, and also allows for the suction, capture, purification, and sterilization of droplets released into the air before they become airborne on the airflow from an air conditioner.

[0014] Furthermore, the objective is to provide an air intake and purification device that captures airborne droplets, which can eliminate the problem of insufficient height of acrylic panels due to individual height differences when meetings are held with a barrier such as an acrylic panel placed on a desk between people, or when several people are sitting side by side in an office, and can capture droplets released into the air immediately after they are released (within a few seconds), even when coughing or sneezing while slightly tilted upwards.

[0015] Furthermore, the objective is to provide an air suction and purification device that can be moved and carried to various locations and can capture droplets. In addition, the objective is to provide an air suction and purification device that not only captures bacteria and droplets in the air, but also supplies air that has been sterilized or inactivated from bacteria and viruses in the air as exhaled air near the mouth and nose, thereby significantly reducing the risk of viral infection. [Means for solving the problem]

[0016] To solve the above problems, the invention described in claim 1 of the present invention includes: a first air inlet for bringing in outside air; a partition having the first air inlet at its upper end and an air flow section inside for flowing in the air coming in from the first air inlet; an air purification section into which the incoming air flows in from the partition and sterilizes or inactivates bacteria and viruses contained in the incoming air using deep ultraviolet light; a deep ultraviolet light emitting device disposed in the air purification section and emitting deep ultraviolet light; a partition holding section for holding the partition and for installing the partition on the upper surface of the air purification section; and an air flow section disposed on the upper surface of the air purification section The air suction and purification device comprises a connecting port for the incoming air from a fluidized section to flow into the air purification section, a first purified air discharge section disposed in the air purification section to discharge the incoming air purified in the air purification section, and an exhaust fan disposed near the first purified air discharge section to draw external air from the first air inlet through the air fluidized section to the air purification section, wherein the connecting port is located approximately at the end of the air purification section, and the incoming air that flows into the air purification section from the connecting port is discharged from the first purified air discharge section while passing near the deep ultraviolet light emitting device.

[0017] Similarly, the invention described in claim 2 is characterized in that, in the air suction and purification device described in claim 1, the first air inlet has an inlet pressure equalization port for equalizing the inlet pressure of the incoming air and equalizing the suction speed of the outside air.

[0018] Similarly, the invention according to claim 3 is characterized in that, in the air suction purification device according to claim 1, the partition holding portion has a pressure loss reduction portion that prevents the inflowing air from flowing rapidly from the air flow portion into the connection port and increasing the pressure loss.

[0019] Similarly, the invention according to claim 4 includes a second air inflow portion for allowing external air to flow in, an air purification portion for allowing the inflowing air to flow in from the second air inflow portion and performing sterilization or inactivation of germs and viruses contained in the inflowing air by deep ultraviolet rays, a deep ultraviolet ray emitting device disposed in the air purification portion for emitting deep ultraviolet rays, a partition portion having an air flow portion for flowing the inflowing air from the air purification portion therein and a second purified air discharge portion for discharging the inflowing air from the air flow portion to the outside at an upper end portion thereof, a partition holding portion for holding the partition portion and installing the partition portion on the upper surface of the air purification portion, a connection port disposed on the upper surface of the air purification portion for allowing the inflowing air from the air purification portion to flow into the air flow portion, and a suction fan disposed near the second air inflow portion for allowing the external air to flow from the second air inflow portion through the air purification portion into the air flow portion. The connection port is disposed at a substantially end portion of the air purification portion, and the inflowing air flowing into the air purification portion from the second air inflow portion passes through the connection port while passing near the deep ultraviolet ray emitting device and flows into the air flow portion and is discharged to the outside from the second purified air discharge portion.

[0020] Similarly, the invention according to claim 5 is characterized in that, in the air suction purification device according to claim 4, it has a discharge pressure equalizing port for equalizing the discharge pressure of the inflowing air discharged from the second purified air discharge portion and equalizing the discharge speed of the inflowing air. <000利用可能なバッテリー容量が少ない場合には、バッテリー容量の少なさを理由に、電力消費が少ないモードで操作される。

[0021] Similarly, the invention according to claim 6 is characterized in that, in the air suction purification device according to claim 4, the partition holding portion has a pressure loss reduction portion that prevents the inflowing air from flowing rapidly from the connection port into the air flow portion and increasing the pressure loss.

[0022] Similarly, the invention described in claim 7 is an air suction and purification device according to claim 1, wherein the partition and partition holding part are moved on the upper surface of the air purification part to position the pressure loss reduction part above the first air discharge part, and the upper surface of the connecting port is opened to allow the outside air to flow in, thereby allowing the outside air to flow in from the connecting port, the incoming air that flows in from the connecting port passes near the deep ultraviolet light emitting device and sterilizes and inactivates bacteria and viruses contained in the incoming air, and flows into the pressure loss reduction part via the exhaust fan and the first purified air discharge part, the incoming air that flows into the pressure loss reduction part flows into the air flow section and is exhausted to the outside from the first air inlet where the inflow pressure uniforming port is provided, and the flow direction of the incoming air in the air flow section is reversed by moving the partition on the upper surface of the air purification part.

[0023] Similarly, the invention described in claim 8 includes an air intake / exhaust section for introducing external air, a partition section having the air intake / exhaust section at its upper end and an air flow section inside for flowing the incoming air from the air intake / exhaust section, an air purification section into which the incoming air flows in from the partition section and which sterilizes or inactivates viruses contained in the incoming air using deep ultraviolet light, a deep ultraviolet light emitting device disposed in the air purification section and emitting deep ultraviolet light, and a partition holding section for holding the partition section and for installing the partition section on the upper surface of the air purification section. The unit comprises a connecting port disposed on the upper surface of the air purification unit for the incoming air from the air flow unit to flow into the air purification unit, a first purified air discharge unit disposed in the air purification unit for discharging the incoming air purified in the air purification unit, and an exhaust fan disposed near the first purified air discharge unit for drawing the outside air from the air intake / exhaust unit through the air flow unit to the air purification unit, the connecting port being located at approximately the end of the air purification unit, and the incoming air flowing into the air purification unit from the connecting port The air intake and purification device is characterized by being discharged from the first purified air discharge section while passing near the deep ultraviolet light emission device; the air purification section has a second air inlet for bringing in outside air, and the incoming air from the second air inlet is used to sterilize or inactivate bacteria and viruses contained in the incoming air with deep ultraviolet light; the deep ultraviolet light emission device is disposed in the air purification section and emits deep ultraviolet light; the partition section has an air flow section inside for flowing the incoming air from the air purification section and has an air intake and exhaust section at its upper end for discharging the incoming air from the air flow section to the outside; the partition holding section holds the partition section and installs the partition section on the upper surface of the air purification section; the connecting port is disposed on the upper surface of the air purification section for allowing the incoming air from the air purification section to flow into the air flow section; and the suction fan is disposed near the second air inlet and near the exhaust fan for allowing the outside air to flow from the second air inlet through the air purification section to the air flow section.The connection port is configured at a substantially end portion of the air purification unit, and the inflowing air that has flowed into the air purification unit from the second air inflow portion passes through the connection port while passing near the deep ultraviolet light emitting device, flows into the air flow portion, and is discharged to the outside from the air intake and exhaust portion. The air suction and purification device is characterized in that it is composed of a switching switch that operates either the exhaust fan or the suction fan, and includes a shielding plate that substantially shields the air flow of the second air inflow portion or the first purified air discharge portion disposed on the upper surface of the fan whose operation has stopped. The air suction and purification device is characterized in that the operation of the suction fan or the exhaust fan reverses the air flow of the air intake and exhaust portion.

[0024] Similarly, the invention according to claim 9 is the air suction and purification device according to claim 8, characterized in that it has an inlet and outlet pressure equalizing port for equalizing the inlet pressure of the inflowing air in the air intake and exhaust portion, equalizing the suction speed of the external air, equalizing the outlet pressure of the inflowing air discharged from the air intake and exhaust portion, and equalizing the discharge speed of the inflowing air.

[0025] Similarly, the invention according to claim 10 is the air suction and purification device according to claim 8, characterized in that the partition holding portion has a pressure loss reducing portion that prevents the inflowing air from flowing suddenly from the air flow portion into the connection port or prevents the inflowing air from flowing suddenly from the connection port into the air flow portion.

[0026] Similarly, the invention according to claim 11 is the air suction and purification device according to claim 8, characterized in that the shielding plate is configured to substantially shield the air flow of the second air inflow portion or the first purified air discharge portion disposed on the upper surface of the fan whose operation has stopped by a shielding plate moving mechanism such as a hinge or a slide mechanism.

[0027] Similarly, the invention described in claim 12 relates to the air suction and purification device described in claims 1, 4, and 8. The deep ultraviolet light emission device is characterized in that it uses a germicidal lamp or an LED as a light source and has an emission wavelength of any of 180 nm to 350 nm.

[0028] Similarly, the invention described in claim 13 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, the exhaust fan and the suction fan are axial flow fans.

[0029] Similarly, the invention described in claim 14 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, the partition and the air purification unit are detachable and movable relative to each other.

[0030] Similarly, the invention described in claim 15 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, the partition and partition holding parts are made of plate-shaped members or integral members.

[0031] Similarly, the invention described in claim 16 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, the mass of the partition or the partition holding part is increased to constitute a mass balance that prevents the partition from floating up due to the wind pressure of the incoming air.

[0032] Similarly, the invention described in claim 17 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, it has a flow rate adjustment mechanism for changing the flow rate of the incoming air in the airflow section.

[0033] Similarly, the invention described in claim 18 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, the height of the upper end of the partition is 5 cm to 50 cm relative to the ground surface.

[0034] Similarly, the invention described in claim 19 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, the height of the pressure loss reduction section is 5 mm to 40 cm.

[0035] Similarly, the invention described in claim 20 is characterized in that, in the air suction and purification device described in claims 1, 4, and 8, a reflection reduction unit for preventing leakage of deep ultraviolet rays is provided at one or more of the following locations: the lower part of the suction fan, the lower part of the exhaust fan, or the upper part of the connecting port.

[0036] Similarly, the invention described in claim 21 is characterized in that, in the air suction and purification device described in claims 4 and 8, a reflective wall channel is configured in which a reflective wall that reflects at least 30% or more of the light beam of the deep ultraviolet emission wavelength is arranged around the deep ultraviolet light emission device. [Effects of the Invention]

[0037] The air suction and purification device described in claims 1 to 21 of the present invention is configured as described above, and by suctioning droplets released into the air by talking, coughing, sneezing, etc., at the air inlet sections such as the first air inlet, the second air inlet, the connecting port, and the air intake and exhaust section, it is possible to suction and capture bacteria and viruses floating in the room air. In particular, by capturing droplets released into the air in a few seconds, the droplets are captured before they can spread into the room on the airflow of an air conditioner, etc., making it possible to significantly reduce the risk of viral infection. By installing the air suction and purification device in a space where two people are talking facing each other, it is possible to significantly reduce the risk of droplets directly hitting the mouth, eyes, and nose of the person facing you by suctioning droplets generated by talking, coughing, and sneezing in a few seconds.

[0038] Furthermore, deep ultraviolet light emitted from the deep ultraviolet light emission device in the air purification unit is used to irradiate bacteria and viruses with ultraviolet light for a set period of time, and a predetermined cumulative irradiation dose (target value is 1 mJ / cm²) is reached. 2By irradiating the air (as described above) to sterilize or inactivate bacteria and viruses, and then discharging the inflow air, which has been treated to capture and sterilize these bacteria and viruses, back into the room or near the mouth and nose, it becomes possible to significantly reduce the risk of infection from bacteria and viruses, and to realize a reliable and high-performance air intake and purification device with a simple configuration.

[0039] Furthermore, the air suction and purification device according to claims 1 to 21 is simple, compact, and portable, significantly reducing installation costs. In addition, it allows for the selection of a configuration in which droplets are drawn in from each other at the partition, or a configuration in which purified air (air from which bacteria and viruses have been sterilized or inactivated) is generated from the partition and the purified air is drawn in.

[0040] This simple configuration makes it portable and easy to install on existing desks and tables in conference rooms and office spaces, allowing for a relatively inexpensive air intake and purification system. Furthermore, it enables the creation of a highly reliable air intake and purification system that can be used in various situations. [Brief explanation of the drawing]

[0041] [Figure 1] This is a schematic diagram (a) of a perspective view and (b) of a side view (a cross-sectional view of the approximate center of the air flow section 3) of the air suction and purification device 1 according to Embodiment 1. [Figure 2] This diagram shows a schematic cross-sectional view of the side of the air suction and purification device 1 according to Embodiment 1 (approximately the central part of the air flow section 3). [Figure 3] This shows an example of the configuration of the reflection reduction unit 17 in the air suction device 1 according to Embodiment 1. [Figure 4] This figure shows the flow velocity distribution in the flow path according to Embodiment 1 when there is no inlet pressure uniform port 6 (a) and the flow velocity distribution when the inlet pressure uniform port 6 is configured (b). [Figure 5]This figure shows the pressure distribution (a) when the height of the pressure loss reduction section 7 in the flow path according to Embodiment 1 is 5 mm, and the pressure distribution (b) when the height of the pressure loss reduction section 7 is 20 mm. [Figure 6] This is a schematic diagram of a perspective view (a) and a schematic diagram of a side view (partially transparent) of the air suction and purification device 1 according to Embodiment 2 (b). [Figure 7] This is a schematic diagram (a) of a perspective view and (b) of a side view (a cross-sectional view of the approximate center of the air flow section 3) of the air suction and purification device 1 according to Embodiment 2. [Figure 8] This figure shows the flow velocity distribution in the flow path according to Embodiment 3 in the configuration of Embodiment 1 (a), and the flow velocity distribution when the partition section 2 and the partition holding section 5 are moved (b). [Figure 9] This figure shows examples of how to use the air suction and purification device 1 according to Embodiment 3, including an example where it is used as a droplet suction device between two people (a) and an example where the air is purified and used as exhaled air (b). [Figure 10] This is a schematic diagram of a perspective view (a) and a schematic diagram of a side view (partially transparent) of the air suction and purification device 1 according to Embodiment 4. [Figure 11] This is a schematic diagram (a) and a partially enlarged view (b) showing an example of the movement mechanism of the shielding plate 25 according to Embodiment 4. [Figure 12] As examples of the operation of the shielding plate 25 according to Embodiment 4, (a) is a schematic perspective view of the configuration used as a droplet suction device, and (b) is a schematic perspective view of the configuration used as a purified air supply device. [Modes for carrying out the invention]

[0042] (The process leading to obtaining one embodiment of the present invention) The inventors of this invention have diligently researched conventional air purifiers and acrylic splash guards installed in conference rooms, as described in the "Background Art." They found that while conventional acrylic splash guards, when used indoors, may prevent droplets from directly hitting someone at the moment of coughing or sneezing, the fine particles of the droplets remain suspended in the air for several minutes to several hours. Furthermore, if a person is tall and their face is positioned above the top of the acrylic panel, or if they cough or sneeze diagonally upwards, the droplets from the cough or sneeze will directly hit the person they are talking to.

[0043] Furthermore, even when an air purifier is installed in a room, conventional air purifiers are designed to purify the indoor air over a certain period of time (for example, several tens of minutes to several hours). Therefore, it takes a considerable amount of time for the air purifier's HEPA filter to capture airborne particles such as droplets, viruses, and bacteria. As a result, the air purification effect is not very effective in indoor spaces where viruses that can infect in a few seconds are present. Infection from viruses released into the air through coughing or sneezing, as well as influenza and other viruses including the novel coronavirus that float in the air, is thought to occur as quickly as a few seconds if these viruses enter the body through the mouth or come into contact with mucous membranes such as the eyes or nose. While it would be ideal to have an air ventilation system or air conditioner that could instantly replace all the air in a room within seconds of a cough or sneeze, such systems are large-scale and require enormous initial investment, making them difficult to implement. Furthermore, even air purifiers face the challenge that unless they can kill or inactivate as many of the captured droplets and viruses in the air as possible, these will be released back into the room, reintroducing viruses into the indoor air.

[0044] Therefore, after further investigation into this problem, the inventors have found that the above problem can be solved by making the following improvements. Specifically, the air intake and purification device prevents droplets from coughs and sneezes from directly reaching the person sitting opposite you during a conversation, to some extent by using a droplet prevention device such as an acrylic plate. Furthermore, it prevents droplets from directly hitting the mouth, eyes, and nose of taller people, and prevents droplets from coughs and sneezes released diagonally upwards from directly hitting the mouth, eyes, and nose of people sitting opposite them, even if they pass over droplet prevention devices such as acrylic panels. In this case, since droplets float downwards from above, even if there is some leeway in the height of the droplet prevention device such as an acrylic panel, droplets may still directly hit the mouth, eyes, and nose of people sitting opposite them, so the flow of droplets must also be taken into consideration.

[0045] Furthermore, we considered whether an air intake and purification device could instantly capture droplets from coughs and sneezes, as well as bacteria and viruses released into the air, within one second, preventing them from floating in the air. We also considered whether the captured bacteria and viruses could be sterilized or inactivated by irradiating them with deep ultraviolet light. In this process, instead of repeatedly capturing and sterilizing or inactivating airborne bacteria and viruses in the room, the required cumulative irradiation dose (mJ / cm²) should be achieved by passing through the deep ultraviolet irradiation section as much as possible in a single pass. 2 I wondered if it would be possible to secure a purified environment, collect the air, and then return it to the room.

[0046] Therefore, the air intake and purification device involves placing a splash-proof component such as an acrylic panel between two people talking face-to-face, and controlling the airflow by locally drawing in the air around their faces (a relatively narrow area) with a fan (axial fan, sirocco fan, various small fans, etc.) to draw in droplets, viruses, and bacteria during conversation, coughing, and sneezing through a specific airflow path. The idea was that if bacteria and viruses could be sterilized or inactivated by ultraviolet irradiation for a certain period of time, the air intake and purification device could be realized relatively simply and inexpensively.

[0047] First, an air intake and purification device is used to place a droplet prevention device, such as an acrylic panel, between two people talking face-to-face, thereby reducing the probability of direct contact with droplets. Next, the airflow from the upper surface of the droplet prevention device, near the faces of the two people, is drawn in. Then, the air intake and purification device uses a filter to capture droplets, viruses, and bacteria contained in the drawn-in air (although the filter is not a mandatory component).

[0048] Furthermore, the air intake and purification system kills or inactivates viruses and bacteria that have passed through after being collected by irradiating them with deep ultraviolet light or germicidal lamps with an emission wavelength of around 265 nm for a certain period of time.

[0049] On the other hand, instead of permanently installing the air intake and purification device described above, a portable, mobile type or a small size that can be easily moved by one person, equipped with both suction and virus inactivation capabilities, can suck up droplets in seconds and return purified air to the room, significantly reducing the risk of viral infection. Furthermore, when alone or in poorly ventilated places, the risk of viral infection can be further reduced by a configuration that sucks in room air, inactivates bacteria and viruses with deep ultraviolet light, and then exhausts the purified air near the mouth and nose, allowing the user to inhale purified air that is as free of viruses and bacteria as possible as exhaled.

[0050] Based on these challenges, insights, and inventions, we have devised a small, lightweight, and portable air intake and purification device with a simple configuration that allows switching between air intake and exhaust near the mouth. Furthermore, the present invention provides an air suction and purification device according to the following embodiments.

[0051] An air suction and purification device according to a first aspect of the present invention includes: a first air inlet for bringing in outside air; a partition section having the first air inlet at its upper end and an air flow section inside for flowing the air flowing in from the first air inlet; an air purification section into which the incoming air flows in from the partition section and which sterilizes or inactivates bacteria and viruses contained in the incoming air using deep ultraviolet light; a deep ultraviolet light emitting device disposed in the air purification section and emitting deep ultraviolet light; a partition holding section for holding the partition section and for installing the partition section on the upper surface of the air purification section; and a front The system comprises a connecting port for the incoming air from the air flow section to flow into the air purification section, a first purified air discharge section disposed in the air purification section to discharge the incoming air purified in the air purification section, and an exhaust fan disposed near the first purified air discharge section to draw external air from the first air inlet through the air flow section to the air purification section. The connecting port is located approximately at the end of the air purification section, and the incoming air that flows into the air purification section from the connecting port is discharged from the first purified air discharge section while passing near the deep ultraviolet light emission device.

[0052] According to the above configuration, by placing a partition made of acrylic or similar material between two people talking face-to-face, and drawing in localized air around each other's faces from an air intake, droplets, viruses, and bacteria released into the air can be captured immediately after they are released, thereby significantly reducing the risk of viral infection. Furthermore, it is possible to provide a high-performance droplet capture air intake and purification device that prevents droplets released into the air from directly reaching the person being spoken to, and also sucks in and captures, purifies, and sterilizes the air before the droplets released into the air become airborne on the airflow of an air conditioner or other source.

[0053] Since there are various airflows in a room, such as airflow from air conditioners, air purifiers, and people moving around, it is important to control the airflow near the first air inlet so that it can be drawn in without being affected by these other airflows as much as possible. Furthermore, in cases where a person is tall and their face is positioned above the top of the acrylic panel, or when they cough or sneeze diagonally upwards, it is possible to prevent droplets from coughing or sneezing directly from reaching the other person, as well as to prevent droplets from directly reaching the mouth, eyes, and nose of taller people, and to prevent droplets from coughing or sneezing diagonally upwards from passing over droplet prevention devices such as acrylic panels and directly reaching the mouth, eyes, and nose of the person sitting opposite.

[0054] On the other hand, this system offers the advantage of being able to construct a relatively simple and inexpensive air intake and purification device that can suction droplets, viruses, and bacteria from conversations, coughs, and sneezes through a flow path with a partition, and then sterilize or inactivate bacteria and viruses by irradiating them with ultraviolet light for a certain period of time. Furthermore, since the connecting port is located at the end of the air purification section, and the incoming air flows from one end of the deep ultraviolet light emission device to the other, efficient deep ultraviolet irradiation becomes possible, enabling high performance and miniaturization.

[0055] Furthermore, the air suction purification device according to the second aspect of the present invention has an inlet pressure equalization port in the first air inlet portion for equalizing the inlet pressure of the incoming air and equalizing the suction speed of the outside air, in addition to the configuration of the air suction purification device according to the first aspect. With the above configuration, the pressure distribution near the first air inlet in the airflow section is made uniform, and the inflow pressure of the incoming air is made uniform, thereby making it possible to uniformize the inflow velocity of the outside air in the first air inlet and increase the average velocity. Furthermore, by widening the spacing between the airflow sections and reducing the area of ​​the inlet pressure uniforming port, the area of ​​the external air suction section (the inlet pressure uniforming port) alone is reduced, thereby minimizing pressure loss in the airflow section of the partition and enabling efficient increases in the external air suction speed and uniformity of the suction speed. This makes it possible to provide a high-performance air suction and purification device with excellent suction performance.

[0056] Furthermore, the width of the airflow channel between the two surfaces in the airflow section is preferably 5 mm or more from the viewpoint of preventing an increase in pressure loss, and the material of the partition section is preferably transparent or translucent as much as possible, but it can also be constructed from opaque materials such as metal or wood.

[0057] Furthermore, in the configuration of the air suction purification device according to the third aspect of the present invention, the partition holding part has a pressure loss reduction part that prevents the incoming air from rapidly flowing from the air flow part to the connecting port and increasing the pressure loss.

[0058] With the above configuration, when external air is drawn in and the incoming air passes through the airflow section and flows into the air purification section via the connecting port, the pressure loss reduction section is configured between the airflow section and the connecting port. This reduces the sudden pressure increase at one or more of the airflow section, the connecting port, and the air purification section, or prevents the sudden increase in pressure loss at one or more of the airflow section, the connecting port, and the air purification section. This prevents a reduction in the flow rate of the incoming air, thus enabling the realization of a high-performance air intake and purification device with excellent intake performance.

[0059] Furthermore, the air suction and purification device according to the fourth aspect of the present invention includes an air purification unit having a second air inlet for bringing in outside air and in which the incoming air flows in from the second air inlet and sterilizes or inactivates bacteria and viruses contained in the incoming air with deep ultraviolet light; a deep ultraviolet light emitting device disposed in the air purification unit and emitting deep ultraviolet light; a partition unit having an air flow unit inside for flowing the incoming air from the air purification unit and a second purified air discharge unit at its upper end for discharging the incoming air from the air flow unit to the outside; and a partition unit that holds the partition unit and has the partition unit on the upper surface of the air purification unit. The system consists of a partition support section for installation, a connecting port disposed on the upper surface of the air purification section for allowing the incoming air from the air purification section to flow into the airflow section, and a suction fan disposed near the second air inlet for allowing the outside air to flow from the second air inlet through the air purification section to the airflow section. The connecting port is located approximately at the end of the air purification section, and the incoming air that flows into the air purification section from the second air inlet passes near the deep ultraviolet light emission device, passes through the connecting port, flows into the airflow section, and is discharged to the outside from the second purified air discharge section.

[0060] With the above configuration, external air is drawn in by the suction fan, and the incoming air entering from the second air inlet is purified by deep ultraviolet light emitted from a deep ultraviolet light emitter installed in the air purification section. The air then passes through the connecting port to the pressure loss reduction section and the air flow section before being discharged from the second purified air discharge section.

[0061] By directing the inflow air, purified by the air purification unit and discharged from the second purified air discharge unit, towards the mouth or nose and inhaling it as exhaled breath, the body takes in purified air in a state where bacteria and viruses have been sterilized or inactivated, significantly reducing the risk of health damage from bacteria and infection from viruses. In particular, by carrying the device to various locations such as poorly ventilated rooms, restaurants, places where many droplets are exchanged, and outdoor areas with infection risks, the risk of viral infection in daily life can be significantly reduced by inhaling the inflow air purified by the air intake and purification device as exhaled breath. It is said that the amount of air a person needs to breathe is about 6 liters per minute, which is at least 0.002 m³. 3 A flow rate of / min is required, but if the flow rate is 0.3m 3 With a flow rate of / min, the aforementioned suction fan will supply more than 150 times the amount of purified air, which is a sufficient supply from the perspective of the required amount of exhaled air.

[0062] Furthermore, the air suction purification device according to the fifth aspect of the present invention has, in the configuration of the air suction purification device according to the fourth aspect, an exhaust pressure equalization port for equalizing the discharge pressure of the incoming air discharged from the second purified air discharge section and for equalizing the discharge speed of the incoming air.

[0063] With the above configuration, the pressure distribution near the second purified air discharge section in the airflow section is made uniform, and the outflow pressure of the incoming air is made uniform, thereby making it possible to uniformize the outflow velocity of the incoming air in the second purified air discharge section and increase the average velocity. Furthermore, by widening the spacing between the airflow sections and reducing the area of ​​the discharge pressure uniforming port, the area of ​​the inflow air discharge section (the discharge pressure uniforming port) alone is reduced, thereby minimizing pressure loss in the airflow section of the partition and efficiently increasing and uniformizing the discharge speed of the inflow air. This makes it possible to provide a high-performance air intake and purification device with excellent exhaust performance.

[0064] Furthermore, the width of the airflow channel between the two surfaces in the airflow section is preferably 5 mm or more from the viewpoint of preventing an increase in pressure loss, and the material of the partition section is preferably transparent or translucent as much as possible, but it can also be constructed from opaque materials such as metal or wood. Furthermore, in the air suction purification device according to the sixth aspect of the present invention, the partition holding part has a pressure loss reduction part that prevents the incoming air from rapidly flowing into the airflow part from the connecting port and increasing the pressure loss, in the configuration of the air suction purification device according to the fourth aspect.

[0065] With the above configuration, when external air is drawn in and the incoming air passes through the air purification section and flows into the airflow section via the connecting port, the pressure loss reduction section is configured between the airflow section and the connecting port. This reduces the sudden pressure increase at one or more of the airflow section, the connecting port, and the air purification section, or prevents the sudden increase in pressure loss at one or more of the airflow section, the connecting port, and the air purification section. This prevents a reduction in the flow rate of the incoming air, thus enabling the realization of a high-performance air suction and purification device with excellent purification performance.

[0066] Furthermore, in the seventh aspect of the present invention, the air suction and purification device is configured such that the partition and partition holding part are moved on the upper surface of the air purification unit, the pressure loss reduction unit is positioned above the first purified air discharge unit, and the upper surface of the connecting port is opened to the outside air, allowing the outside air to flow in. The incoming air flows in from the connecting port, passes near the deep ultraviolet light emitting device, sterilizing and inactivating bacteria and viruses contained in the incoming air, and flows into the pressure loss reduction unit via the exhaust fan and the first purified air discharge unit. The incoming air that has flowed into the pressure loss reduction unit flows into the airflow unit and is exhausted to the outside from the first air inlet where the inflow pressure uniforming port is provided. The flow direction of the incoming air in the airflow unit is reversed by moving the partition on the upper surface of the air purification unit.

[0067] With the above configuration, the exhaust fan's suction force allows outside air to be drawn in through the connecting port. The incoming air entering through the connecting port is purified by the air purification unit and then flows into the pressure loss reduction unit by the exhaust fan. The incoming air that flows into the pressure loss reduction unit passes through the air flow unit and is exhausted to the outside through the inflow pressure uniform port and the first air inflow port. In this case, by utilizing the direction of the airflow from the exhaust fan and arranging the pressure loss reduction unit above the exhaust fan, it becomes possible to reverse the direction of the incoming air flowing through the airflow unit by 180 degrees, and the air suction and purification device that sucks in droplets from the first air inlet can be used as an air suction and purification device that discharges purified air from the first air inlet.

[0068] By directing the purified air discharged from the first air inlet towards the mouth and nose, it becomes possible to exhale purified air, significantly reducing the risk of viral infection in poorly ventilated places such as conference rooms and restaurants. Furthermore, its compact design allows for installation and portability in various locations, enabling droplet and viral infection control for one or more people.

[0069] In this way, by providing a single exhaust fan with two functions—a droplet suction function and a purified air discharge function—from the first air inlet, it becomes possible to realize a compact, lightweight, low-cost, high-performance, and portable air suction and purification device.

[0070] Furthermore, an air intake and purification device according to the eighth aspect of the present invention includes an air intake and exhaust section for bringing in outside air, a partition section having the air intake and exhaust section at its upper end and an air flow section inside for flowing in the air coming in from the air intake and exhaust section, an air purification section into which the incoming air flows in from the partition section and sterilizes or inactivates viruses contained in the incoming air with deep ultraviolet light, a deep ultraviolet light emitting device disposed in the air purification section that emits deep ultraviolet light, and a device for holding the partition section and for installing the partition section on the upper surface of the air purification section. The unit comprises a partition holding section, a connecting port disposed on the upper surface of the air purification section for the incoming air from the air flow section to flow into the air purification section, a first purified air discharge section disposed in the air purification section for discharging the incoming air purified in the air purification section, and an exhaust fan disposed near the first purified air discharge section for drawing the outside air from the air intake / exhaust section through the air flow section to the air purification section, the connecting port being located approximately at the end of the air purification section and the flow that flows into the air purification section from the connecting port The air intake and purification device is characterized in that incoming air is discharged from the first purified air discharge section while passing near the deep ultraviolet light emission device; the air purification section has a second air inlet for bringing in outside air, and the incoming air flows in from the second air inlet and sterilizes or inactivates bacteria and viruses contained in the incoming air with deep ultraviolet light; the deep ultraviolet light emission device is disposed in the air purification section and emits deep ultraviolet light; the partition section has an air flow section inside for flowing the incoming air from the air purification section and has an air intake and exhaust section at its upper end for discharging the incoming air from the air flow section to the outside; the partition holding section holds the partition section and installs the partition section on the upper surface of the air purification section; the connecting port is disposed on the upper surface of the air purification section for flowing the incoming air from the air purification section into the air flow section; and the suction fan is disposed near the second air inlet and near the exhaust fan for flowing the outside air from the second air inlet through the air purification section into the air flow section.The air intake and purification device is characterized in that the connecting port is located at approximately the end of the air purification section, and the incoming air flowing from the second air inlet to the air purification section passes near the deep ultraviolet light emission device, through the connecting port, flows into the air flow section, and is discharged to the outside from the air intake and exhaust section. A changeover switch operates either the exhaust fan or the suction fan, and a shielding plate is provided on the upper surface of the fan that is not operating, substantially blocking the airflow of the second air inlet or the first purified air discharge section. The operation of the suction fan or the exhaust fan reverses the airflow of the air intake and exhaust section by approximately 180 degrees.

[0071] With the above configuration, when the suction fan is stopped and the exhaust fan is operated, outside air is drawn in from the air intake / exhaust section, and the incoming air passes through the air flow section and flows into the air purification section via the connecting port. The incoming air that flows into the air purification section is purified by a deep ultraviolet light emitting device installed in the air purification section that emits deep ultraviolet light, and is then discharged to the outside by the exhaust fan. At this time, the second air inlet, which is the outside air inlet for the suction fan, is blocked by the shielding plate, so that outside air does not flow in.

[0072] On the other hand, when the exhaust fan is stopped and the suction fan is operated, the suction fan draws in outside air, and the incoming air flows into the air purification section. The incoming air that flows into the air purification section is purified by a deep ultraviolet light emitting device installed in the air purification section that emits deep ultraviolet light, and then passes through the connecting port and flows into the air flow section.

[0073] The incoming air that flows into the airflow section is discharged to the outside through the air intake and exhaust section. At this time, the first purified air discharge section, which is the outlet section of the exhaust fan, is blocked by the shielding plate, so that the incoming air does not flow out. By utilizing the flow directions of the exhaust fan and the suction fan, it becomes possible to reverse the direction of the incoming air flowing through the airflow section by approximately 180 degrees, making it possible to utilize the air suction and purification device by switching between a configuration that sucks in droplets from the air intake and exhaust section and a configuration that discharges purified air from the air intake and exhaust section.

[0074] By capturing droplets containing bacteria and viruses from the aforementioned air intake and exhaust unit, the risk of viral infection can be significantly reduced. Furthermore, by directing the purified air discharged from the air intake and exhaust unit towards the mouth and nose, purified air can be exhaled, significantly reducing the risk of viral infection in poorly ventilated conference rooms, restaurants, and other places where people eat. By configuring the air intake and purification device without moving any components, it is possible to perform both functions with stable operation, thereby realizing a highly reliable air intake and purification device.

[0075] Furthermore, the configuration can be made such that there is no air leakage from the second air inlet when the suction fan is stopped, and no air leakage from the first purified air outlet when the exhaust fan is stopped, thereby preventing a significant decrease in the flow rate of the incoming air and making it possible to provide a high-performance air suction and purification device with a large flow rate of incoming air.

[0076] Furthermore, the air suction and purification device according to the ninth aspect of the present invention has an inlet and outlet pressure equalization port in the air intake and exhaust section for equalizing the inlet pressure of the incoming air and the suction speed of the outside air, as well as for equalizing the discharge pressure of the incoming air discharged from the air intake and exhaust section and for equalizing the discharge speed of the incoming air.

[0077] With the above-described configuration, when the exhaust fan is operated, the pressure distribution near the air intake and exhaust section in the airflow section is made uniform, and the inflow pressure of the incoming air is made uniform, thereby making it possible to uniformize the inflow velocity of the outside air in the air intake and exhaust section and to increase the average velocity. On the other hand, when the suction fan is operated, the pressure distribution near the intake / exhaust section in the airflow section is made uniform, and the outflow pressure of the incoming air is made uniform, which in turn makes it possible to make the outflow velocity of the incoming air in the air intake / exhaust section uniform and to increase the average velocity. Therefore, the aforementioned air intake and exhaust section makes it possible to provide a high-performance air intake and exhaust device with excellent external air intake and inflow air exhaust performance.

[0078] Furthermore, in the air suction purification device according to the tenth aspect of the present invention, the partition holding part is configured such that the partition holding part has a pressure loss reduction part that prevents the incoming air from rapidly flowing from the air flow part to the connecting port and increasing the pressure loss, or prevents the incoming air from rapidly flowing from the connecting port to the air flow part and increasing the pressure loss.

[0079] With the above configuration, when the exhaust fan is operating, it draws in outside air, and when the incoming air flowing in from the air intake / exhaust section passes through the airflow section and flows into the air purification section via the connecting port, the pressure loss reduction section is configured between the airflow section and the connecting port, thereby reducing a sudden increase in pressure at one or more of the airflow section, the connecting port, and the air purification section, or preventing a sudden increase in pressure loss at one or more of the airflow section, the connecting port, and the air purification section, and thus preventing a reduction in the flow rate of the incoming air. As a result, it is possible to realize a high-performance air intake and purification device with excellent external air intake performance and purified air exhaust performance.

[0080] Furthermore, when the suction fan is operating, it draws in outside air from the second air inlet, and as the incoming air passes through the air purification section and flows into the airflow section via the connecting port, the pressure loss reduction section is configured between the airflow section and the connecting port. This reduces a sudden increase in pressure at one or more of the airflow section, the connecting port, and the air purification section, or prevents a sudden increase in pressure loss at one or more of the airflow section, the connecting port, and the air purification section. This prevents a reduction in the flow rate of the incoming air, thus enabling the realization of a high-performance air suction and purification device with excellent exhaust performance. Therefore, the pressure loss reduction unit makes it possible to provide a high-performance air intake and purification device with excellent external air intake performance and inflow air exhaust performance.

[0081] Furthermore, in the air suction and purification device according to the 11th aspect of the present invention, the shielding plate is configured to substantially block the airflow of the second air inlet or the first purified air outlet, which is located on the upper surface of a fan that is not in operation, by a shielding plate moving mechanism such as a hinge or a sliding mechanism.

[0082] The above configuration enables simple and smooth switching operations, making it possible to provide a highly reliable air intake and purification device.

[0083] Furthermore, in the air suction and purification device according to the twelfth aspect of the present invention, the deep ultraviolet light emission device, in the configuration of the air suction and purification device according to the first, fourth, and eighth aspects, uses a germicidal lamp or LED as the light source, and the emission wavelength is in the range of 180 nm to 350 nm.

[0084] With the above configuration, it is possible to realize a deep ultraviolet light emission device with excellent emission wavelength, illuminance, emission lifetime, heat generation, emission performance, and sterilization or inactivation performance, and to provide a highly reliable air suction purification device with excellent sterilization or inactivation performance.

[0085] Furthermore, in the configuration of the air suction purification device according to the 13th aspect of the present invention, the exhaust fan and the suction fan are axial flow fans, as in the configuration of the air suction purification device according to the first aspect, the fourth aspect, and the eighth aspect.

[0086] The above configuration makes it possible to provide an air suction and purification device that excels in flow rate, quietness, and cost.

[0087] Furthermore, in the air suction and purification device according to the 14th aspect of the present invention, the partition and the air purification unit are configured to be detachable and movable relative to each other, as is the case with the air suction and purification device according to the first, fourth, and eighth aspects of the present invention.

[0088] The above configuration makes it possible to provide an air suction and purification device that is easy to assemble and highly portable.

[0089] Furthermore, in the configuration of the air suction purification device according to the 15th aspect of the present invention, the partition portion and the partition holding portion are made of a plate-shaped member or an integrated member, as described in the configuration of the air suction purification device according to the first, fourth, and eighth aspects of the present invention.

[0090] The above-described configuration allows for a relatively lightweight, easy, and inexpensive construction using acrylic assembly or resin molding, making it possible to provide an air suction and purification device with excellent portability and cost-effectiveness.

[0091] Furthermore, in the air suction purification device according to the 16th aspect of the present invention, in the configuration of the air suction purification device according to the first, fourth, and eighth aspects, the mass of the partition or the partition holding part is increased to constitute a mass balance that prevents the partition from floating up due to the wind pressure of the incoming air.

[0092] With the above-described configuration, the partition and the partition holder will not float up due to the air pressure of the incoming air, and the gap between the lower surface of the partition holder and the upper surface of the air purification unit will be reduced, making it possible to provide a high-performance air suction and purification device that prevents a decrease in the flow rate of the incoming air.

[0093] Furthermore, the air suction purification device according to the 17th aspect of the present invention has a configuration that includes a flow rate adjustment mechanism for changing the flow rate of the incoming air in the air flow section, in the configuration of the air suction purification device according to the first, fourth, and eighth aspects of the present invention.

[0094] With the above-described configuration, it becomes possible to change the flow rate of the incoming air depending on the usage scenario and situation, making it possible to provide an air suction and purification device with excellent quietness and flow characteristics.

[0095] Furthermore, in the air suction purification device according to the 18th aspect of the present invention, the height of the upper end of the partition portion is set to 5 cm to 50 cm relative to the ground surface, in the configuration of the air suction purification device according to the first, fourth, and eighth aspects of the present invention.

[0096] With the above configuration, it becomes possible to select the optimal height of the upper end of the partition section, taking into account the user's height, portability, and ease of use when aspirating droplets and discharging purified air, thereby providing an air suction and purification device tailored to the application.

[0097] Furthermore, in the air suction purification device according to the 19th aspect of the present invention, the height of the pressure loss reduction section is set to 5 mm to 40 cm in the configuration of the air suction purification device according to the first aspect, the fourth aspect, and the eighth aspect.

[0098] The above-described configuration makes it possible to prevent a sudden increase in pressure loss at one or more of the airflow section, the connecting port, or the air purification section, thereby realizing a high-performance air suction and purification device with excellent fluidity of the incoming air.

[0099] Furthermore, the air suction purification device according to the 20th aspect of the present invention has a configuration in which, in the configuration of the air suction purification device according to the first, fourth, and eighth aspects, a reflection reduction unit for preventing leakage of deep ultraviolet rays is provided at one or more of the following locations: below the suction fan, below the exhaust fan, or above the connecting port.

[0100] The above configuration significantly reduces the leakage of deep ultraviolet rays to the outside, making it possible to realize a high-performance air intake and purification device with superior safety.

[0101] Furthermore, in the configuration of the air suction purification device according to the 21st aspect of the present invention, as in the configuration of the air suction purification device according to the first aspect, the fourth aspect, and the eighth aspect, a reflective wall channel is configured in which a reflective wall that reflects at least 30% or more of the light beam of the deep ultraviolet emission wavelength is arranged around the deep ultraviolet light emission device.

[0102] With the above-described configuration, it is possible to significantly improve the average illuminance of deep ultraviolet light in the reflective wall channel and significantly reduce the illuminance unevenness of deep ultraviolet light in the reflective wall channel, thereby realizing an air intake purification device with excellent cumulative irradiation dose and superior performance in sterilizing or inactivating bacteria and viruses.

[0103] These configurations enable the efficient removal of viruses and bacteria from indoors using an air intake and purification device, as well as the efficient and highly accurate removal of viruses and bacteria contained in coughs and sneezes immediately after they are released into the air. This significantly reduces the risk of viral infection, and its portability allows for safer and more secure meetings, conferences, business operations, customer service, etc. Embodiments of the present invention

[0104] Hereinafter, an air suction and purification device according to an embodiment of the present invention (hereinafter simply referred to as "an embodiment") will be described based on the drawings. In the following, the same or corresponding components are denoted by the same reference numerals in all the drawings, and redundant explanations of components with the same reference numerals will be omitted.

[0105] (Embodiment 1) The air suction purification device 1 according to Embodiment 1 will be described with reference to Figures 1 to 5. Figures 1 to 3 are schematic diagrams showing an example of the configuration of the air suction purification device 1 according to Embodiment 1. Figure 4 is a diagram showing the flow velocity distribution in the flow path of the inflow air 9 of the air suction purification device 1, performed using CFD (Computer Fluid Dynamics) in the configuration of the air suction purification device 1 according to Embodiment 1, and Figure 5 is a diagram showing the pressure distribution in the flow path of the inflow air 9 of the air suction purification device 1, performed using CFD (Computer Fluid Dynamics) in the configuration of the air suction purification device 1 according to Embodiment 1.

[0106] Figure 1 shows a perspective view (a) and a schematic side view (cross-sectional view of approximately the center of the airflow section 3) (b) of the air suction purification device 1 according to Embodiment 1. Figure 2 shows a schematic side view of the cross-sectional view (approximately the center of the airflow section 3) of the air suction purification device 1 according to Embodiment 1. Figure 3 shows an example of the configuration of the reflection reduction section 17 in the air suction device 1 according to Embodiment 1.

[0107] As shown in Figures 1 to 3, the air intake and purification device 1 comprises a first air inlet 4 into which outside air flows, a partition 2 having the first air inlet 4 at its upper end and an air flow section 3 inside that allows the incoming air 9 from the first air inlet 4 to flow, an air purification section 10 into which the incoming air 9 flows from the partition 2 and which sterilizes or inactivates bacteria and viruses contained in the incoming air 9 using deep ultraviolet light, a deep ultraviolet light emitting device 11 disposed in the air purification section 10 that emits deep ultraviolet light, and a holder for the partition 2. It also consists of a partition holding section 5 for installing a partition section 2 on the upper surface of the air purification section 10, a connecting port 8 disposed on the upper surface of the air purification section 10 for incoming air 9 from the air flow section 3 to flow into the air purification section 10, a first purified air discharge section 13 disposed in the air purification section 10 for discharging the incoming air 9 purified in the air purification section 10, and an exhaust fan 12 disposed near the first purified air discharge section 13 for drawing outside air from the first air inlet section 4 through the air flow section 3 into the air purification section 10.

[0108] Furthermore, the connecting port 8 is located approximately at the end of the air purification unit 10, and the incoming air 9 that flows into the air purification unit 10 from the connecting port 8 passes near the deep ultraviolet light emitting device 11 before being discharged from the first purified air discharge unit 13. Furthermore, the first air inlet 4 is equipped with an inlet pressure equalization port 6 to equalize the inlet pressure of the incoming air 9 and equalize the suction speed of the outside air. On the other hand, the partition holding section 5 has a pressure loss reduction section 7 inside to prevent the inlet air 9 from flowing rapidly from the air flow section 3 to the connecting port 8 and increasing pressure loss, and the upper surface of the air purification section 10 and the lower surface of the partition holding section 5 are in contact, making it difficult for the incoming air 9 to leak to the outside.

[0109] A reflective wall channel 14 is formed by arranging reflective walls 16 around the deep ultraviolet light emitter 11 installed in the air purification section 10, which reflect at least 30% of the deep ultraviolet light emission wavelength (in the case of germicidal lamps, the light beam is distributed in the range of 200nm to 300nm, with the highest light intensity or illuminance around 250nm). Generally, as the distance from the deep ultraviolet light emitter 11 increases, the illuminance (mW / cm²) increases. 2 The illuminance decreases rapidly. By causing multiple reflections of deep ultraviolet light from the deep ultraviolet light emitter 11 by the reflective wall 16, the variation in illuminance in the flow path of the incoming air 9, which forms the internal space of the reflective wall flow path 14, is reduced, and the average value of the illuminance increases.

[0110] The sterilization and inactivation performance of the incoming air 9 passing through the reflecting wall channel 14 increases with increasing cumulative irradiation dose. If the cumulative irradiation dose falls below a predetermined dose, sufficient sterilization and inactivation performance cannot be obtained. The cumulative irradiation dose J (J / m2) is calculated using the formula J = dt × I = (L / U) × I. In this formula, L (m) is the channel length (length of the reflecting wall channel 14), and I (W / m) is the length of the channel. 2 ): UV irradiation dose, U (m / s): flow velocity, dt: unit time (UV irradiation time). Making the flow velocity of the incoming air 9 passing through each region of the reflective wall channel 14 as uniform as possible, making the cumulative irradiation dose, which consists of the flow velocity and the amount of ultraviolet irradiation, as uniform as possible, and reducing the areas where the cumulative irradiation dose is locally low are important factors in maintaining sterilization performance and inactivation. By providing the reflective wall 16, it is possible to improve the average cumulative amount of ultraviolet radiation irradiated inside the air purification unit 10, significantly improving the ability to kill bacteria and inactivate viruses. The reflectivity of the reflective wall 16 at emission wavelengths of 200 nm to 300 nm is preferably 70% or higher, but lower values ​​are also acceptable.

[0111] In Figures 1 to 3, the incoming air 9 that enters from the first air inlet 4 passes through the air flow section 3, then passes through the connecting section 8 and enters the reflective wall channel 14 located inside the air purification section 10. Inside the reflective wall channel 14, deep ultraviolet light emitted from the deep ultraviolet light emitter 11 irradiates bacteria and viruses contained in the incoming air 9, performing ultraviolet irradiation for a certain period of time, and a predetermined cumulative irradiation dose (target value is 1 mJ / cm²) is reached. 2 By irradiating the system with the above-mentioned light, bacteria and viruses are sterilized or inactivated, and the inflow air 9, which has collected and sterilized these bacteria and viruses, is released to the outside via the exhaust fan 12 and the first purified air discharge unit 13. At this time, it is desirable that each flow path through which the inflow air 9 flows be as airtight as possible, with no leakage of the inflow air 9.

[0112] The suction force for drawing in outside air and the flow rate of the incoming air 9 are determined by the capacity of the exhaust fan 12 (PQ curve) and the pressure loss in the flow path (from the first air inlet 4 to the first purified air outlet 13) through which the incoming air 9 flows. A fast inflow velocity of the incoming air 9 at the uniform inflow pressure port 6 is desirable for drawing in outside air, and a uniform inflow velocity with minimal variation is also desirable.

[0113] Figures 2 and 3 show the configuration of a reflection reduction unit 17 for reducing the amount of light (μW) that leaks to the outside, either directly from the deep ultraviolet light emitter 11 or the reflection channel wall 14, or reflected from the surfaces of various components. It is located below the connecting port 8 and the exhaust fan 12. Since ultraviolet light (including deep ultraviolet light) is harmful to the human body, the amount of light leaking to the outside must be kept below a specified level. Furthermore, it has been confirmed that ultraviolet light (deep ultraviolet light) has the property of degrading resins, rubbers, acrylics, adhesives, etc., upon irradiation. Therefore, in addition to reducing the leakage of deep ultraviolet light to the outside, it is also essential to take measures to prevent deep ultraviolet irradiation of components in order to prevent degradation of resin parts due to ultraviolet irradiation.

[0114] The reflection reduction unit 17, which is attached to the lower part of the exhaust fan 12 using an axial flow fan, has the function of reducing ultraviolet irradiation to the resin blades of the exhaust fan 12 and reducing ultraviolet leakage to the outside. In this case, the exterior of the exhaust fan 12 mounted in Embodiment 1 is made of aluminum. Furthermore, if the pressure loss increases due to the placement of the reflection reduction section 17 at the bottom of the exhaust fan 12, a configuration in which an anti-reflective material 19 that significantly reduces the reflection of ultraviolet rays is placed at the bottom of the exhaust fan 12 may also be used.

[0115] On the other hand, the reflection reduction unit 17 installed at the exhaust fan's one-way connection port 8 has the function of reducing ultraviolet irradiation to the acrylic partition 3 and reducing ultraviolet leakage to the outside. By implementing measures to prevent ultraviolet leakage to the outside and to prevent ultraviolet irradiation to resin parts in this way, an air intake and purification device 1 with excellent safety and reliability can be realized. Furthermore, the air purification unit 10, the partition unit 3, and the partition holder unit 5 are designed to be detachable and portable. This configuration makes it possible to realize an air suction and purification device 1 with even greater portability, ease of transport, and mobility.

[0116] Figure 4 shows the difference in flow velocity distribution near the first air inlet 4 at the inlet pressure uniformity port 6, as shown by CFD. Figure 4(a) does not have the inlet pressure uniformity port 6, while Figure 4(b) shows a configuration with the inlet pressure uniformity port 6 installed. It can be seen that the inlet pressure uniformity port 6 equalizes the pressure near the first air inlet 4, resulting in a uniform and several-fold increase in the flow velocity of the incoming air 9 passing through the inlet pressure uniformity port 6.

[0117] Figure 5 shows the results of a CFD (Computer Fluid Dynamics) calculation of the pressure loss distribution in the flow path of the incoming air 9 of the air suction purification device 1, illustrating the effect of the pressure loss reduction section 7 formed in the partition holding section 5. Figure 5(a) shows the calculated pressure distribution when the height dimension of the pressure loss reduction section 7 is 5 mm, and Figure 5(b) shows the calculated pressure distribution when the height dimension of the pressure loss reduction section 7 is 20 mm. It can be seen that the pressure change (pressure loss) of the incoming air 9 flowing from the airflow section 3 to the connecting port 8 has been significantly improved (reduced). By appropriately setting the dimensions of the pressure loss reduction section 7, it is possible to prevent an increase in the pressure loss in the flow path of the incoming air 9, increase the flow rate of the incoming air 9, and increase the flow velocity of the incoming air 9 passing through the inflow pressure uniform port 6.

[0118] As shown in Embodiment 1 of the air suction and purification device 1, a partition 3 made of an acrylic plate or the like, which has a first air inlet 4 (air suction section), is placed between two people talking face to face. By drawing in localized air (external air) near each other's faces through the first air inlet 4, droplets, viruses, and bacteria released into the air can be captured immediately after they are released, thereby significantly reducing the risk of viral infection. Furthermore, with a relatively simple configuration, it is possible to provide a high-performance droplet capture air suction and purification device 1 that prevents droplets released into the air from directly reaching the person being spoken to, and also sucks in and captures, purifies, and sterilizes the droplets released into the air before they can float on the airflow of an air conditioner or other source.

[0119] Since there are various airflows in a room, such as airflow from air conditioners, air purifiers, and people moving around, it is important to control the airflow so that the outside air near the first air inlet 4 can be drawn in without being affected by these other airflows as much as possible.

[0120] On the other hand, an air intake and purification device 1 can be constructed relatively simply and inexpensively, which can draw in droplets, viruses, and bacteria from conversations, coughs, and sneezes through a flow path provided by the partition section 3, and sterilize or inactivate bacteria and viruses by irradiating them with ultraviolet light for a certain period of time. Furthermore, since the connecting port 8 is located at the end of the air purification section 10, and the incoming air 9 flows in from one end of the deep ultraviolet light emitter 11 to the other end, efficient deep ultraviolet irradiation is possible, enabling a high-performance and compact air intake and purification device 1. This also makes it portable, relocatable, and mobile, significantly reducing installation costs and drastically reducing the risk of viral infection, thus realizing a high-performance air intake and purification device 1.

[0121] In Embodiment 2, filters are not provided in any of the airflow section 3, pressure loss reduction section 7, or air purification section 10, which are the flow paths for the incoming air 9. However, it is also acceptable to configure the system to include a filter in any of the flow paths for the incoming air 9.

[0122] (Embodiment 2) Next, the air suction purification device 1 according to Embodiment 2 will be described with reference to Figure 6. Figure 6 is a schematic diagram showing an example of the configuration of the air suction purification device 1 according to Embodiment 2. A schematic diagram (a) of a perspective view and a schematic diagram (b) of a side view (partially transparent) of the air suction and purification device 1 according to Embodiment 2 are shown. Detailed explanations of parts that have the same configuration as Embodiment 1 are omitted.

[0123] As shown in Figures 6(a) and (b), the air intake and purification device 1 has a second air inlet 18 for bringing in outside air, and an air purification unit 10 into which incoming air 9 flows in from the second air inlet 18 and sterilizes or inactivates bacteria and viruses contained in the incoming air 9 with deep ultraviolet light, a deep ultraviolet light emitting device 11 disposed in the air purification unit 10 and emitting deep ultraviolet light, a partition unit 2 having an air flow section 3 inside which the incoming air 9 from the air purification unit 10 flows, and a second purified air discharge section 21 at its upper end which discharges the incoming air 9 from the air flow section 9 to the outside, and a partition unit 2 that holds the partition unit 2 and on the upper surface of the air purification unit 10 The system consists of a partition support section 5 for installing the partition section 2, a connecting port 8 disposed on the upper surface of the air purification section 10 to allow incoming air 9 from the air purification section 10 to flow into the air flow section 3, and a suction fan 15 disposed near the second air inlet 18 to allow outside air to flow from the second air inlet 18 through the air purification section 10 to the air flow section 3. The connecting port 8 is located approximately at the end of the air purification section 10, and the incoming air 9 that flows into the air purification section 10 from the second air inlet 18 passes near the deep ultraviolet light emission device 11, passes through the connecting port 8, flows into the air flow section 3, and is discharged to the outside from the second purified air discharge section 21.

[0124] With the above configuration, external air is drawn in by the suction fan 15, and the incoming air 9 that flows in from the second air inlet 18 is purified by deep ultraviolet light emitted from the deep ultraviolet light emitter 11 installed in the air purification unit 10. The purified air then passes through the connecting port 8 to the pressure loss reduction unit 7 and the air flow unit 3 and is discharged from the second purified air discharge unit 21.

[0125] By directing the inflow air 9, purified by the air purification unit 10 and discharged from the second purified air discharge unit 21, towards the mouth or nose and inhaling it as exhaled breath, the purified air 9, in which bacteria and viruses have been sterilized or inactivated, is taken into the body, significantly reducing the risk of health damage from bacteria and infection from viruses. In particular, by carrying the device to various locations such as poorly ventilated rooms, restaurants where people eat, places where many droplets are exchanged, and outdoor areas with infection risks, the risk of viral infection in daily life can be significantly reduced by inhaling the inflow air purified by the air intake purification device 1 as exhaled breath.

[0126] Furthermore, a discharge pressure equalization port 20 is provided to equalize the discharge pressure of the incoming air 9 discharged from the second purified air discharge section 21 and to equalize the discharge velocity of the incoming air 9. The discharge pressure equalization port 20 equalizes the pressure distribution near the second purified air discharge section 21 in the airflow section 3, thereby equalizing the outflow pressure of the incoming air 9, which in turn equalizes the outflow velocity of the incoming air 9 in the second purified air discharge section 21 and increases the average velocity. Furthermore, by widening the spacing between the airflow sections 3 and reducing the area of ​​the discharge pressure uniform port 20, the area of ​​only the discharge section (discharge pressure uniform port 20) for the incoming air 9 is reduced, thereby minimizing pressure loss in the airflow sections 3 of the partition section 2 and efficiently increasing and uniformizing the discharge speed of the incoming air 9. This makes it possible to provide a high-performance air suction and purification device 1 with excellent purification performance.

[0127] Furthermore, the partition holding section 5 has a pressure loss reduction section 7 that prevents the rapid inflow of incoming air 9 from the connecting port 8 into the airflow section 3, thereby preventing an increase in pressure loss. With this configuration, when external air is drawn in and the incoming air 9 passes through the air purification section 10 and flows into the airflow section 3 via the connecting port 8, a pressure loss reduction section 7 is formed between the airflow section 3 and the connecting port 8. This reduces the rapid increase in pressure at one or more of the airflow section 3, connecting port 8, and air purification section 10, or prevents the rapid increase in pressure loss at one or more of the airflow section 3, connecting port 8, and air purification section 10. This prevents a reduction in the flow rate of incoming air 9, making it possible to realize a high-performance air suction and purification device 1 with excellent exhaust performance.

[0128] Furthermore, the configuration and function of the ultraviolet light emission device 11, reflective wall channel 14, reflective wall 16, reflection reduction section 17, and anti-reflective material 19 in Embodiment 2 are the same as in Embodiment 1, so their description will be omitted. In Embodiment 2, filters are not provided in any of the airflow section 3, pressure loss reduction section 7, or air purification section 10, which are the flow paths for the incoming air 9. However, it is also acceptable to configure the system to include a filter in any of the flow paths for the incoming air 9.

[0129] (Embodiment 3) Next, the air suction purification device 1 according to Embodiment 3 will be described with reference to Figures 7 to 9. Figure 7 is a schematic diagram showing an example of the configuration of the air suction purification device 1 according to Embodiment 3, and shows a perspective view (a) and a schematic side view (cross-sectional view of approximately the center of the air flow section 3) (b) of the air suction purification device 1 according to Embodiment 3. In Figure 7, detailed explanations of parts with the same configuration as Embodiments 1 and 2 will be omitted.

[0130] Furthermore, the air suction and purification device 1 according to Embodiment 3 is configured as an air suction and purification device 1 with the same configuration as Embodiment 1 shown in Figures 1 to 3, but with the partition section 2 and partition holding section 5 moved on the upper surface of the air purification section 10 to position the pressure loss reduction section 7 above the first purified air discharge section 13, and the upper surface of the connecting port 8 opened to the outside air so that outside air can flow in. The incoming air 9 that flows in from the connecting port 8 passes near the deep ultraviolet light emission device 11, sterilizing and inactivating bacteria and viruses contained in the incoming air 9, and flows into the pressure loss reduction section 7 via the exhaust fan 12 and the first purified air discharge section 13. The incoming air 9 that flows into the pressure loss reduction section 7 flows into the air flow section 3 and is exhausted to the outside from the first air inlet section 4 where the inflow pressure uniform port 6 is provided. The flow direction of the incoming air 9 in the air flow section 3 is reversed by moving the partition section 2 and partition holding section 5 on the upper surface of the air purification section 10. In this case, since the incoming air 9 passes through, it is desirable that the contact surface between the upper surface of the air purification section 10 and the lower surface of the partition holding section 5 having the pressure loss reduction section 7 be as airtight as possible, with no leakage of the incoming air 9.

[0131] With the above configuration, the exhaust fan 12 can draw in outside air from the connecting port 8 by its suction force. The incoming air 9 that flows in from the connecting port 8 is purified by the air purification unit 10 and flows into the pressure loss reduction unit 7 via the exhaust fan 12. The incoming air 9 that flows into the pressure loss reduction unit 7 passes through the air flow unit 3 and is exhausted to the outside through the inflow pressure uniform port 6 and the air inflow port 3. In this case, by utilizing the direction of the airflow of the exhaust fan 12 and arranging the pressure loss reduction unit 7 above the exhaust fan 12, it becomes possible to reverse the direction of the incoming air 9 flowing through the airflow unit 3 by 180 degrees. This makes it possible to use the air suction purification device 1 of Embodiment 1 shown in Figures 1 to 3, which is configured to suck in droplets from the first air inlet 4, as the air suction purification device 1 of Embodiment 3 shown in Figure 7, which discharges purified air (incoming air 9) from the first air inlet 4.

[0132] By directing the purified air (intake air 9) discharged from the first air inlet 4 towards the mouth and nose, it becomes possible to exhale purified air, significantly reducing the risk of viral infection in poorly ventilated places such as conference rooms and restaurants. Furthermore, its compact design allows for installation and portability in various locations, enabling droplet and viral infection control for one or more people.

[0133] Figure 8 shows the results of calculating the velocity distribution of the incoming air 9 inside the flow path of the air suction purification device 1 in Embodiment 3 using CFD when the flow direction of the incoming air 9 is reversed by 180 degrees. Figure 8(a) shows the flow velocity distribution of a flow path with the same configuration as in Embodiment 1, in which outside air flows in from the first air inlet 4 and the incoming air 9 is discharged to the outside from the first purified air discharge section 13 via the exhaust fan 12.

[0134] Figure 8(b) shows the results of calculating the flow velocity distribution of the incoming air 9 inside the flow path of the air suction purification device 1 using CFD, in a configuration in which the partition section 2 and partition holding section 5 are moved from Embodiment 1, the upper part of the connecting port 8 is opened to the outside air, and the pressure loss reduction section 7 of the partition holding section 3 is positioned directly above the first purified air discharge section 13.

[0135] The incoming air 9 that enters from the connecting port 8 flows into the reflecting wall passage 14 of the air purification unit 10, and then flows into the pressure loss reduction unit 7 from the first receiving air discharge unit 13 via the exhaust fan 12. The incoming air 9 that enters the air flow unit 3 passes through the air flow unit 3 and flows out to the outside from the first air inlet 4. Figures 8(a) and (b) show that, due to the effects of the pressure loss reduction section 7 and the inlet pressure uniforming port 6, both the suction of external air from the first air inlet 4 and the discharge of purified air (inlet air 9) from the first air inlet 4 become several times faster than the flow velocity of the airflow section 3, resulting in a flow velocity of several meters per second, and thus the system operates without problems.

[0136] Figure 9 shows examples of how the air intake and purification device 1 is used. Figure 9(a) shows a configuration where the air intake and purification device 1 is placed between two people sitting opposite each other at a desk, sucking in droplets containing germs and viruses, as well as outside air, purifying it, and then releasing it into the air. On the other hand, Figure 9(b) shows a configuration where the air intake and purification device 1 is brought closer to the user, sucking in droplets containing germs and viruses, as well as outside air, purifying it in the air purification unit 10, and then discharging the purified air around the mouth and nose, allowing the user to directly inhale the purified air as exhaled breath.

[0137] In this way, by realizing a configuration in which a single exhaust fan 12 has two functions—a function of sucking in droplets from the first air inlet 4 and a function of discharging purified air from the first air inlet 4—it is possible to realize a small, lightweight, low-cost, high-performance, portable air suction and purification device 1.

[0138] (Embodiment 4) Next, the air suction purification device 1 according to Embodiment 4 will be described with reference to Figures 10 to 12. Figure 10 is a schematic diagram showing an example of the configuration of the air suction purification device 1 according to Embodiment 4, and shows a perspective view (a) and a schematic side view (partially transparent) (b) of the air suction purification device 1 according to Embodiment 4. Figures 11(a) and (b) show perspective views of the configuration of the hinge portion 26 as an example of a mechanism for arranging the shielding plate 25. Figures 12(a) and (b) show perspective views of the air suction purification device 1 as an example of the operation of the shielding plate 25. In Figures 10 to 12, detailed explanations of parts with the same configuration as Embodiments 1, 2, and 3 are omitted.

[0139] As shown in Figures 10(a) and (b) and Figure 12(a), the air intake and purification device 1 includes an air intake and exhaust section 22 for bringing in outside air, a partition section 2 having the air intake and exhaust section 22 at its upper end and an air flow section 3 inside for flowing in the incoming air 9 from the air intake and exhaust section 22, an air purification section 10 into which the incoming air 9 flows in from the partition section 2 and which sterilizes or inactivates viruses contained in the incoming air 9 with deep ultraviolet light, a deep ultraviolet light emitting device 11 disposed in the air purification section 10 that emits deep ultraviolet light, a partition holding section 5 for holding the partition section 2 and for installing the partition section 2 on the upper surface of the air purification section 10, and an air purifying device disposed on the upper surface of the air purification section 10 One operating mode of the air suction and purification device 1 consists of a connecting port 8 for incoming air 9 from the airflow section 3 to flow into the air purification section 10, a first purified air discharge section 13 located in the air purification section 10 to discharge the incoming air 9 purified in the air purification section 10, and an exhaust fan 12 located near the first purified air discharge section 13 to draw outside air from the air intake and exhaust section 22 through the airflow section 3 into the air purification section 10. The connecting port 8 is located approximately at the end of the air purification section 10, and the incoming air 9 that flows into the air purification section 10 from the connecting port 8 passes near the deep ultraviolet light emission device 11 before being discharged from the first purified air discharge section 13.

[0140] Furthermore, as shown in Figures 10(a) and (b) and Figure 12(b), the air intake and purification device 1 has a second air inlet 18 for bringing in outside air, and an air purification unit 10 into which incoming air 9 flows in from the second air inlet 18 and sterilizes or inactivates bacteria and viruses contained in the incoming air 9 using deep ultraviolet light; a deep ultraviolet light emitting device 11 disposed in the air purification unit 10 and emitting deep ultraviolet light; a partition unit 2 having an air flow section 3 inside for flowing the incoming air 9 from the air purification unit 10 and an air intake and exhaust section 22 at its upper end for discharging the incoming air 9 from the air flow section 3 to the outside; and a partition unit that holds the partition unit 2 and installs the partition unit 2 on the upper surface of the air purification unit 10. The other operating mode of the air suction and purification device 1 consists of a partition holding section 5, a connecting port 8 disposed on the upper surface of the air purification section 10 which allows incoming air 9 from the air purification section 10 to flow into the air flow section 3, and a suction fan 15 disposed near the second air inlet 18 and near the exhaust fan 12 which allows outside air to flow from the second air inlet 18 through the air purification section 10 to the air flow section 3. The connecting port 8 is located approximately at the end of the air purification section 10, and the incoming air 9 that flows into the air purification section 10 from the second air inlet 18 passes near the deep ultraviolet light emitting device 11, passes through the connecting port 8, flows into the air flow section 3, and is discharged to the outside from the air intake and exhaust section 22.

[0141] In the air suction and purification device 1 having the two operating modes described above, a changeover switch 24 operates either the exhaust fan 12 or the suction fan 15. A shielding plate 25 is provided that substantially blocks the airflow of the second air inlet 18 or the first purified air outlet 13, which are located on the upper surface of the fan that is not operating. The operation of the suction fan 15 or the exhaust fan 12 reverses the airflow of the air intake and exhaust section 22 by approximately 180 degrees.

[0142] With the above configuration, when the suction fan 15 is stopped and the exhaust fan 12 is operated, outside air is drawn in from the air intake / exhaust section 22, and the incoming air 9 passes through the air flow section 3 and flows into the air purification section 10 via the connecting port 8. The incoming air 9 that flows into the air purification section 10 is purified by the deep ultraviolet light emitting device 11, which is installed in the air purification section 10 and emits deep ultraviolet light, and is then discharged to the outside by the exhaust fan 12. At this time, the second air inlet 18, which is the outside air inlet for the suction fan 15, is blocked by the shielding plate 25, so that outside air does not flow in.

[0143] On the other hand, when the exhaust fan 12 is stopped and the suction fan 15 is operated, outside air is drawn in by the suction fan 15, and the incoming air 9 flows into the air purification unit 10. The incoming air 9 that flows into the air purification unit 10 is purified by a deep ultraviolet light emitting device 11 installed in the air purification unit 10, which emits deep ultraviolet light, and then passes through the connecting port 8 and flows into the air flow unit 3.

[0144] The incoming air 9 that flows into the airflow section 3 is discharged to the outside through the air intake / exhaust section 22. At this time, the first purified air discharge section 13, which is the outlet of the exhaust fan 12, is blocked by the shielding plate 25, so that the incoming air 9 does not flow out.

[0145] By utilizing the flow directions of the exhaust fan 12 and the suction fan 15, it is possible to reverse the direction of the incoming air 9 flowing through the airflow section 3 by approximately 180 degrees. This allows the air suction and purification device 1 to be used by switching between a configuration in which droplets are sucked in from the air intake and exhaust section 22 and a configuration in which purified air is discharged from the air intake and exhaust section 22.

[0146] By capturing droplets containing bacteria and viruses from the air intake and exhaust unit 22, the risk of viral infection can be significantly reduced. Furthermore, by directing the purified air discharged from the air intake and exhaust unit 22 towards the mouth and nose, purified air can be exhaled, significantly reducing the risk of viral infection in poorly ventilated conference rooms, restaurants, and other places where people eat. By configuring the air intake and purification device 1 without moving any components, it is possible to perform both functions with stable operation, resulting in a highly reliable air intake and purification device 1.

[0147] Furthermore, the configuration can be designed so that there is no air leakage from the second air inlet 18 when the suction fan 15 is stopped, and no air leakage from the first purified air discharge 13 when the exhaust fan 12 is stopped, thereby preventing a significant decrease in the flow rate of the incoming air 9, and making it possible to provide a high-performance air suction and purification device 1 with a large flow rate of incoming air 9. Figure 11 shows an example of a mechanism for moving the shielding plate 25, in which a hinge portion 26 fixed to the shielding plate 25 is held rotatably by a hinge rotation portion 27.

[0148] In Embodiment 4, the first purified air discharge section 13 or the second air flow section 18 is substantially shielded by a hinge mechanism, but a sliding mechanism or any other mechanism capable of shielding is also acceptable.

[0149] In Embodiments 1 to 4, the air purification unit 10 is equipped with a deep ultraviolet light emitting device 11, but it is also possible to have a configuration in which a filter is installed in the flow path of the incoming air 9 from the air inlet to the air outlet. In this case, the deep ultraviolet light emitting device 11 may be installed in addition, or it may not be installed. In Embodiments 1 to 4, the inlet pressure equalization port 6, the outlet pressure equalization port 20, and the inlet / outlet pressure equalization port 23 may or may not be provided. Also, the shape of the opening may be circular or angular, as long as there is a hole.

[0150] Furthermore, in Embodiments 1 to 4, the flow path width between the two surfaces of the airflow section 3 is preferably 5 mm or more from the viewpoint of preventing an increase in pressure loss, and the material of the partition section 2 is preferably transparent or translucent as much as possible, but it is also acceptable to use an opaque material such as metal or wood. In Embodiments 1 to 4, the partition section 2 and the partition holding section 5 were made of acrylic or other sheet material, but there is no problem in using metal or molded resin. Furthermore, although the deep ultraviolet light source used in Embodiments 1 to 4 was a germicidal lamp, any light source that emits deep ultraviolet light, such as an LED or laser, is acceptable.

[0151] Furthermore, in Embodiments 1 to 4, it is also acceptable to adjust the flow rate of the incoming air 9 by adjusting the rotation speed of the exhaust fan 12 and the suction fan 15. In Embodiments 1, 2, and 4, the partition holding section 5 is configured to include a pressure loss reduction section 7, but a configuration without the pressure loss reduction section 7 in the partition holding section 5 is also acceptable. In Embodiments 1 to 4, the exhaust fan 12 and the suction fan 15 were axial fans, but other types of fans with suction capabilities are also acceptable.

[0152] Furthermore, in Embodiments 1 to 4, the partition section 2, the partition holding section 5, and the air purification section 10 may be fixed with screws or adhesive, or they may be separate components that can be moved. In Embodiments 1 to 4, the partition section 2 and the partition holding section 5 are made of acrylic or the like. However, it is also possible to use metal or the like in part, and by applying the load of the metal part, the degree of contact between the lower surface of the partition holding section 5 and the upper surface of the air purification section 10 may be increased, and the structure may also be designed so that it does not float up due to the wind pressure of the incoming air 9. In Embodiments 1 to 4, the partition section 2, partition holding section 5, airflow section 3, and pressure loss reduction section 7 were assembled using screws and other fasteners made of acrylic or other sheet material, but they may also be partially molded from resin or other materials.

[0153] Furthermore, the power supply for the exhaust fan 12, suction fan 15, and deep ultraviolet light emitter 11 may be a 100V power supply, or it may be a configuration in which batteries are installed to supply power. From the above description, many improvements and other embodiments of the present invention will be apparent to those skilled in the art. Therefore, the above description should be interpreted as illustrative only and is provided for the purpose of teaching those skilled in the art the best mode of carrying out the invention. The details of its structure and / or function can be substantially modified without departing from the spirit of the invention. [Industrial applicability]

[0154] This invention relates to an air intake and purification device installed on a desk or table. It works by drawing in air containing airborne bacteria and viruses from an air inlet in a partition, sterilizing or inactivating the bacteria and viruses in the air in an air purification unit, and then releasing the purified air back into the air, or releasing the purified air around the mouth and nose from an air outlet in the partition, thereby sterilizing and inactivating bacteria and viruses in indoor air. This device is highly reliable, economical, high-performance, and portable, and is an effective technology for balancing the risk of influenza virus and COVID-19 infection with economic activity. It can be used in workplaces, convenience stores, conference rooms, restaurants, meeting halls, various conference rooms, concert halls, and other locations. [Explanation of symbols]

[0156] 1. Air suction and purification device 2. Partition section 3. Air flow section 4. First air inlet 5. Partition holder 6. Inlet pressure equalization port 7 Pressure loss reduction section 8 Connection port 9. Inflow air 10. Air purification unit 11. Deep ultraviolet light emission device 12 Exhaust fan 13. First purified air discharge section 14 Reflection wall channel 15 Suction fan 16 reflective wall 17 Reflection reduction section 18 Second air inlet 19 Anti-reflective material 20 Exhaust pressure equalization port 21 Second purified air discharge section 22 Air intake and exhaust section 23. Inlet and outlet pressure equalization port 24 Changeover switch 25 Shielding plate 26 Hinge section 27 Hinge rotation part

Claims

1. A partition section comprising: a first air inlet for bringing in outside air; a partition section having the first air inlet at its upper end and an air flow section inside for flowing the air flowing in from the first air inlet; an inlet pressure equalization port for equalizing the inlet pressure of the incoming air and equalizing the suction speed of the outside air in the first air inlet; an air purification section into which the incoming air flows in from the partition section and sterilizes or inactivates bacteria and viruses contained in the incoming air using deep ultraviolet light; a deep ultraviolet light emitting device disposed in the air purification section that emits deep ultraviolet light; a partition holding section for holding the partition section and for installing the partition section on the upper surface of the air purification section; a connecting port disposed on the upper surface of the air purification section for the incoming air from the air flow section to flow into the air purification section; and the partition holding section is designed so that the incoming air flows rapidly from the air flow section to the connecting port. An air suction and purification device comprising: a pressure loss reduction unit to prevent an increase in incoming pressure loss; a first purified air discharge unit disposed in the air purification unit and discharging the incoming air purified in the air purification unit; and an exhaust fan disposed near the first purified air discharge unit and drawing the outside air from the first air inlet through the air flow unit to the air purification unit, wherein the connecting port is located approximately at the end of the air purification unit, and the incoming air that flows into the air purification unit from the connecting port passes near the deep ultraviolet light emission device and is discharged from the first purified air discharge unit, wherein, depending on the application, the partition unit and partition holding unit are moved on the upper surface of the air purification unit to position the pressure loss reduction unit above the first purified air discharge unit, and the upper surface of the connecting port is opened to the outside air so that the outside air can flow in, thereby allowing the outside air to flow in from the connecting port, and the incoming air that flows in from the connecting port passes near the deep ultraviolet light emission device, removing bacteria and viruses contained in the incoming air The system is configured to sterilize and inactivate the air, and to allow the air to flow into the pressure loss reduction section via the exhaust fan and the first purified air discharge section, and the incoming air that has flowed into the pressure loss reduction section flows into the air flow section and is exhausted to the outside from the first air inlet section where the inflow pressure equalization port is provided, and the partition section is moved on the upper surface of the air purification section,An air intake and purification device characterized by having a configuration that reverses the flow direction of the incoming air in the airflow section.

2. The air suction and purification device according to claim 1, characterized in that the deep ultraviolet light emission device uses a germicidal lamp or an LED as a light source and has an emission wavelength of any of 180 nm to 350 nm.

3. The air suction and purification device according to claim 1, characterized in that the exhaust fan is an axial flow fan.

4. The air suction and purification device according to claim 1, characterized in that the partition and the air purification unit are detachable and movable relative to each other.

5. The air suction and purification device according to claim 1, characterized in that the partition and partition holding parts are made of plate-shaped members or integral members.

6. The air suction and purification device according to claim 1, characterized in that the mass of the partition or the partition holder is increased to configure a mass balance that prevents the partition from floating up due to the wind pressure of the incoming air.

7. The air suction and purification device according to claim 1, characterized in that the height of the upper end of the partition is 5 cm to 50 cm relative to the ground surface.

8. The air suction and purification device according to claim 1, characterized in that the height of the pressure loss reduction section is 5 mm to 40 cm.

9. The air suction and purification device according to claim 1, characterized in that a reflective wall channel is configured in which a reflective wall that reflects at least 30% or more of the light beam of the deep ultraviolet emission wavelength is arranged around the deep ultraviolet light emission device.

Images