JP2022175714A - Ultraviolet air sterilizer - Google Patents

Abstract

To solve the problem that conventional ultraviolet air sterilizers sterilizing air by irradiating ultraviolet light require use of an ultraviolet lamp with intense illuminance or prolonging the ultraviolet irradiation time for the air in the sterilizer so as to obtain strong sterilizing power.SOLUTION: An ultraviolet air sterilizer for sterilizing air using an ultraviolet light source comprises: a casing having an air circulation part in which air to be sterilized flows; an air intake guide plate disposed near an air inlet of the casing, and extending in a first direction in which the casing extends; an ultraviolet light source for irradiating the air circulation part with ultraviolet light; and a suction fan for sucking air into the casing from the air circulation part. The air intake guide plate is configured in such a manner that air which flows toward the air intake guide plate in a second direction crossing the first direction from the outside is guided into the air circulation part while changing the direction toward the first direction by being blocked by the air intake guide plate.SELECTED DRAWING: Figure 1

Description

The present invention relates to an ultraviolet air sterilizer. More specifically, the present invention relates to an air sterilizer that efficiently sucks air from the surrounding space.

Patent Literature 1 describes an ultraviolet irradiation air sterilizer provided with a baffle plate in a casing. The ultraviolet irradiation air sterilizer described in Patent Literature 1 is intended to increase the ultraviolet sterilization efficiency in the sterilizer by providing a baffle plate in the casing.

Japanese Patent Application Laid-Open No. 2016-32620

The UV sterilization effect in the apparatus is determined by the sterilization dose (Joules per unit area: J/cm2), which is the sum of the illuminance (mW/cm2) and the irradiation time (seconds) for the UV lamp. Therefore, in order to obtain a strong sterilizing power, it is necessary to use an ultraviolet lamp with a high illuminance, or to lengthen the time during which the air in the apparatus is irradiated with the ultraviolet sterilizing light source by means of a baffle plate or the like in the casing. In order to solve such a problem, as described in Japanese Patent Application Laid-Open No. 2016-32620 (Patent Document 1), the air in the device rotates around the ultraviolet sterilization light source, and the ultraviolet irradiation area is changed. A method has been proposed in which the air flow path is lengthened by allowing the air to pass through, and the ultraviolet irradiation time is lengthened.
However, in this structure, the air sucked into the apparatus is only the intake port, so there is a problem that the air in the space cannot be sufficiently sucked and only the air around the apparatus can be sterilized.
Airborne viruses originating from human breathing and speech can spread indoors. The air that flows into the device of an air sterilizer for the purpose of suppressing airborne wills depends only on the suction force of the fan, so there is a problem that only the air near the inlet can be sucked. However, methods such as using an ultraviolet sterilization light source with a high ultraviolet output or extending the time the air in the device is exposed to ultraviolet rays are complicated, increase power consumption, increase the external dimensions of the device, and increase the cost of the device. There is a problem that the running cost increases.
Another method is to slow down the flow rate of the air and lengthen the irradiation time of the ultraviolet rays.

An ultraviolet air sterilizer according to the present invention is an ultraviolet air sterilizer for sterilizing air using an ultraviolet light source, comprising a casing portion having an air circulation portion through which air to be sterilized flows, and an air flow in the casing portion. A baffle plate installed near an inlet and extending in a first direction in which the casing extends, an ultraviolet light source for irradiating the air circulation portion with ultraviolet rays, and sucking air from the air circulation portion into the casing portion. and a suction fan unit for The baffle plate is such that air flowing toward the baffle plate from the outside in a second direction crossing the first direction is blocked by the baffle plate and changed in direction to the first direction. and is introduced into the air circulation portion.

In the ultraviolet air sterilizer according to the present invention, a baffle plate extending in the first direction in which the casing extends is provided in the vicinity of the air inlet of the casing portion. This baffle plate blocks the air flowing toward the baffle plate from the outside in a second direction that intersects the first direction, and changes the direction in the first direction to move the casing part. Since it is configured to be introduced into the air circulating portion of the air circulating portion, the inflow of air from the outside into the air circulating portion is performed efficiently. As a result, the sterilization efficiency of bacteria and viruses contained in the air can be enhanced.

Further, in the ultraviolet air sterilizer according to the present invention, the air guide plate has a plate-like member arranged substantially radially, and the surface of the plate-like member has a surface extending in the first direction. 2. A convex projection may be provided for guiding the air blocked by the baffle plate into the air circulation portion.

In the ultraviolet air sterilizer according to the present invention, the baffle plate has a plate-shaped member arranged substantially radially, and the surface of the plate-shaped member has a convex projection extending in the first direction. is provided, the air blocked by the baffle plate can be more efficiently guided into the air circulation portion.

Further, in the ultraviolet air sterilizer according to the present invention, the plate-like member may have a plate-like or curved shape. By making the shape of the plate-like member that constitutes the baffle plate a flat or curved shape, the plate-like member captures the air flowing toward the baffle plate, and the air blocked by the plate-like member is reliably removed. can be efficiently guided into the air circulation portion.

Further, in the ultraviolet air sterilizer according to the present invention, the plate member may extend spirally around the central axis of the baffle plate in the first direction. By configuring the plate-like member constituting the baffle plate to extend spirally around the central axis of the baffle plate in the first direction, the air coming toward the baffle plate from different directions is treated as a tornado. Since the air flowing toward the baffle plate can be caught by the plate-like member, the air blocked by the plate-like member can be reliably and efficiently guided into the air circulation portion.

Further, in the ultraviolet air sterilizer according to the present invention, the protrusion may be provided near an end and/or substantially in the center of the plate member. By providing the protruding portion in the vicinity of the end portion and/or in the substantially central portion of the plate-like member, the air blocked by the baffle plate can be reliably and efficiently guided into the air circulation portion.

Further, in the ultraviolet air sterilizer according to the present invention, the ultraviolet light source may include an ultraviolet germicidal lamp or a light emitting diode that outputs ultraviolet light in a wavelength range of 200 nm to 280 nm (wavelength range of UVC region). .

In the ultraviolet air sterilizer according to the present invention, the air injection portion of the casing portion is provided with the baffle plate extending in the first direction in which the casing extends, and the baffle plate extends in the first direction from the outside. The air flowing toward the baffle plate in a second direction intersecting with is blocked by the baffle plate and introduced into the air circulation portion of the casing portion while changing its direction to the first direction. Therefore, air can efficiently flow into the air circulation portion from the outside. As a result, the sterilization efficiency of bacteria and viruses contained in the air can be enhanced.

FIG. 1 is a diagram schematically showing a perspective view of an ultraviolet air sterilizer according to a first embodiment. FIG. 2 is a top view of the ultraviolet air sterilizer according to the first embodiment. FIG. 3 is a top view of the ultraviolet air sterilizer according to the second embodiment. FIG. 4 is a diagram schematically showing a perspective view of an ultraviolet air sterilizer according to a third embodiment. FIG. 5 is a top view of the ultraviolet air sterilizer according to the third embodiment. FIG. 6 is a diagram schematically showing a perspective view of an ultraviolet air sterilizer according to a fourth embodiment. FIG. 7 is a diagram schematically showing a perspective view of an ultraviolet air sterilizer according to a fifth embodiment. FIG. 8 is a diagram schematically showing the flow of air in the ultraviolet air sterilizer according to the first embodiment. FIG. 9 is a diagram schematically showing the air flow in the ultraviolet air sterilizer according to the fifth embodiment.

Ultraviolet air sterilizers according to some embodiments are described below with reference to the drawings. In the following description, the same reference numerals are given to the same elements in the description of the drawings.

An ultraviolet air sterilizer is a device that sterilizes air by irradiating the air flowing through the device with ultraviolet light called germicidal rays generated by an ultraviolet light source. In the ultraviolet air sterilizer according to the present embodiment, for example, the air exhaled by a person is efficiently flowed into the air circulation part in the ultraviolet air sterilizer without using a large fan, and is irradiated with ultraviolet light to sterilize the air. configured to allow As a result, it is possible to realize a compact and power-saving ultraviolet air sterilizer that has a high sterilization capability. Below, the ultraviolet air sterilizer according to some embodiments will be described in detail.

(First embodiment)
FIG. 1 is a diagram schematically showing a perspective view of an ultraviolet air sterilizer 1 according to the first embodiment. FIG. 2 is a top view of the ultraviolet air sterilizer 1 according to this embodiment. An XYZ coordinate system is drawn in FIG.

As shown in FIG. 1, the ultraviolet air sterilizer 1 includes an ultraviolet light source 6 for radiating ultraviolet rays to sterilize air, a casing section 7 through which air to be sterilized flows, and an air A baffle plate 2 installed in the vicinity of the inlet 3 and an intake fan 4 for sucking air from the air inlet 3 to the air circulation section 10 inside the casing section 7 are provided. In the present embodiment, the baffle plate 2 is composed of four substantially rectangular plate-like plate members that are substantially perpendicular to each other and radially arranged. For example, the baffle plate 2 includes two flat plate members 2a whose short sides extend in the Y direction and two flat plate members 2b whose short sides extend in the X direction. are placed in Further, the longitudinal direction of the plate-like members 2a and 2b that constitute the baffle plate 2 extends in the direction in which the casing portion 7 extends (the Z direction). In this embodiment, the Z direction or the downward direction corresponds to the first direction. On the other hand, the X direction, the Y direction, or the horizontal direction corresponds to the second direction. In addition, in FIG. 1, the ultraviolet light source 6 is supported by a support member (not shown) at a substantially central position of the air circulation portion 10 .

When the intake fan 4 operates, the air around the ultraviolet air sterilizer 1 is sucked by the intake fan 4, moves horizontally toward the air guide plate 2, and moves toward the air guide plate 2 (plate-like member 2a). , 2b) and is blocked by the baffle plate 2 . After that, it moves downward along the plate-like members 2a and 2b that constitute the baffle plate 2 while changing its direction downward. After that, the air is introduced into the air circulation portion 10 through the air inlet 3 provided in the upper portion of the casing portion 7 .

1 and 2, the surface of the baffle plate 2 (or the surface of the plate-like members 2a and 2b) of the ultraviolet air sterilizer 1 is extended downward (first direction). A convex projection 11 is provided for guiding the air blocked by the baffle plate 2 into the air circulation portion 10 . In this embodiment, the projections 11 are provided near the ends of the plate-like members 2a and 2b and in the approximate center. Moreover, the protrusions 11 do not necessarily have to be provided near the ends of the plate-like members 2a and 2b and substantially at the center, but are provided either near the ends of the plate-like members 2a and 2b or substantially at the center. can be Moreover, the protrusion 11 can be provided continuously from the vicinity of the upper end to the vicinity of the lower end of the surface of the baffle plate 2 (or the surfaces of the plate members 2a and 2b). However, the protrusions 11 do not necessarily have to be provided continuously from the vicinity of the upper end to the vicinity of the lower end of the surface of the baffle plate 2 (or the surfaces of the plate-like members 2a and 2b). It may be formed by arranging a plurality of them in the direction.

Further, referring to FIG. 2, the projections 11 are composed of projections 11a provided on the surfaces near the ends of the plate-like members 2a and 2b, and approximately central portions of the rear surfaces opposite to the surfaces near the ends. can have a projection 11b provided on the . FIG. 2 schematically shows the horizontal air flow. By arranging the protrusions in this way, the air hitting the plate-like members 2a and 2b can be captured without escaping more reliably. It can be introduced into the air circulation section 10 in advance.

In FIG. 1, the casing part 7 can be made of a material capable of blocking ultraviolet rays so that the ultraviolet rays emitted from the ultraviolet light source 6 do not leak to the outside. For example, the casing part 7 can be made of metal such as aluminum, or opaque resin. Further, in order to prevent ultraviolet rays from leaking to the outside, a light-shielding paint may be applied to the inner surface or outer surface of the casing portion 7, or a light-shielding plate may be attached.

The ultraviolet air sterilizer 1 can include a power supply for driving the ultraviolet light source 6 and wiring for connecting the power supply and the ultraviolet light source 6 (not shown). Also, the suction fan 4 can be driven by, for example, an electric motor (not shown).

Moreover, in the present embodiment, as described above, the ultraviolet light source 6 can be arranged substantially in the central portion of the air circulation section 10 . As a result, ultraviolet rays are emitted from the ultraviolet light source 6 in the circumferential direction of the air circulation portion 10, so that the air flowing through the air circulation portion can be sterilized in all directions. Note that the ultraviolet light source may be arranged around the air circulation portion. In this case, ultraviolet light is emitted from the ultraviolet light source toward the interior of the air circulation portion.

Next, the structures of the baffle plate 2 and the projections are illustrated below.
(1) Structure of baffle plate Material: metal such as aluminum, acrylic plate, or resin film,
Thickness: 3 mm to 15 mm: Thickness that can ensure appropriate strength Width: 30 mm to 60 mm: Length equal to or greater than the opening diameter (radius) of the air inlet 3 of the casing 7 Length: About 100 mm to 1000 mm: Efficiently takes in air The surface of the baffle plate 2 (or the surfaces of the plate-like members 2a and 2b) may be provided with convex projections for taking in air at the ends and approximately the center thereof. Air can be captured by the projections and flowed into the air inlet of the ultraviolet air sterilizer. The height of the protrusion from the surface of the baffle plate 2 (or the surfaces of the plate members 2a and 2b) can be about 2 mm to 30 mm.

The baffle plate 2 is attached to a fixed member (pillar member), and can be installed in the vicinity of the air inlet 3 provided in the upper part of the casing part 7 while being attached to the fixed member with screws, for example. . The structure of the fixing member (column member) for fixing the baffle plate 2 will be exemplified below.
(2) Structure of fixing member (pillar member) of baffle plate Material Metal such as aluminum, resin such as acrylic Thickness 3mm to 5mm Thickness and length that can ensure appropriate strength Approximately 100mm to 1000mm: Length to take in air efficiently difference

Further, as shown in FIG. 1, a light shielding plate 5 having a slit can be provided between the air inlet 3 and the ultraviolet light source 6 in the upper part of the casing part 7 . The structure of the light shielding plate 5 is exemplified below.
(3) Light-shielding plate with slit Material Metal such as aluminum, resin such as acrylic, material that is opaque and does not transmit ultraviolet light Thickness 3 mm to 5 mm Thickness that can ensure appropriate strength Length 50 mm to 100 mm: Light crossing the slit length that does not directly leak

In the ultraviolet air sterilizer 1 according to this embodiment, the air flowing through the air circulation portion 10 of the casing portion 7 is irradiated with ultraviolet light emitted from the ultraviolet lamp to perform air sterilization. Two plate-like members 2a extending in the Y direction and two plate-like members 2b extending in the X direction, which constitute the baffle plate 2, are radially arranged in the upper part of the casing part 7. The air flowing from the periphery of the ultraviolet air sterilizer 1 can be efficiently sucked to sterilize the air. By providing the baffle plate 2, a sufficient amount of air can flow into the casing portion 7 even if a small intake fan 4 is used for sucking the air. Energy saving can be realized.

(Second embodiment)
Next, an ultraviolet air sterilizer 101 according to a second embodiment will be described. FIG. 3 shows a schematic diagram of the ultraviolet air sterilizer 101 viewed from above. As shown in FIG. 3, the baffle plate 2 is composed of two flat plate members 2a arranged linearly in substantially the same direction. Note that the ultraviolet air sterilizer 101 according to the second embodiment may have the same configuration as the ultraviolet air sterilizer 1 except that the baffle plate 2 is composed of two plate-like members 2a. can.

In the ultraviolet air sterilizer 101, the baffle plate 2 is composed of two flat plate-like members 2a arranged linearly in substantially the same direction. When the intake fan 4 operates, the air around the ultraviolet air sterilizer 101 is sucked by the intake fan 4, moves horizontally toward the air guide plate 2, and moves toward the air guide plate 2 (plate-like member 2a). ) and is blocked by the baffle plate 2 . After that, it moves downward along the plate-like member 2a that constitutes the baffle plate 2 while changing its direction downward. After that, the air is introduced into the air circulation portion 10 through the air inlet 3 provided in the upper portion of the casing portion 7 .

In the ultraviolet air sterilizer 101, the baffle plate 2 is composed of two flat plate-like members 2a, and the amount of air caught by the baffle plate is the same as that of the ultraviolet air according to the first embodiment. Although it is lower than the sterilization device 1, the air flowing from the vicinity of the ultraviolet air sterilization device 101 can be efficiently sucked and the air can be sterilized. By providing the baffle plate 2, a sufficient amount of air can flow into the casing portion 7 even if a small intake fan 4 is used for sucking the air. Energy saving can be realized.

(Third Embodiment)
Next, an ultraviolet air sterilizer 201 according to a third embodiment will be described. FIG. 4 is a diagram schematically showing a perspective view of the ultraviolet air sterilizer 201. As shown in FIG. FIG. 5 is a top view of the ultraviolet air sterilizer 201. FIG. Note that an XYZ coordinate system is drawn in FIG. As shown in FIGS. 4 and 5, the baffle plate 2 is composed of four curved plate-like members each having an R-shaped cross section, which are radially arranged substantially perpendicular to each other. For example, the baffle plate 2 includes two curved plate members 202a whose short sides extend in the Y direction and two curved plate members 202b whose short sides extend in the X direction. are placed in Note that the plate-like members 202a and 202b that constitute the baffle plate 2 are not limited to having an R-shaped cross section, and various shapes such as those having a substantially U-shaped cross section can be applied.

In addition, in the ultraviolet air sterilizer 201 according to the third embodiment, except that the baffle plate 2 is configured by radially arranging four curved plate-like members substantially perpendicular to each other, It can have the same configuration as the sterilization device 1 .

In the ultraviolet air sterilizer 201, the baffle plate 2 is configured by radially arranging four curved plate members substantially perpendicular to each other. When the intake fan 4 operates, the air around the ultraviolet air sterilizer 201 is sucked by the intake fan 4, moves horizontally toward the air guide plate 2, and moves toward the air guide plate 2 (plate-like member 202a). , 202b) and is blocked by the baffle plate 2. After that, it moves downward along the plate-like member 2a that constitutes the baffle plate 2 while changing its direction downward. After that, the air is introduced into the air circulation portion 10 through the air inlet 3 provided in the upper portion of the casing portion 7 .

In the ultraviolet air sterilizer 201, the baffle plate 2 is composed of four curved plate-like members 202a and 202b, and can catch the air coming from different directions with respect to the baffle plate 2. Therefore, the amount of air captured by the baffle plate can be increased more than that of the flat plate-like member. Therefore, the air flowing from the vicinity of the ultraviolet air sterilizer 201 can be sucked more efficiently than the ultraviolet air sterilizer 1 according to the first embodiment, and the air can be sterilized. By providing the baffle plate 2, a sufficient amount of air can flow into the casing portion 7 even if a small intake fan 4 is used for sucking the air. Energy saving can be realized.

In this embodiment, convex projections 11 are provided on the surfaces of the ends of the baffle plate 2 (the surfaces of the curved plate-like members 202a and 202b).

(Fourth embodiment)
Next, an ultraviolet air sterilizer 301 according to a fourth embodiment will be described. FIG. 6 schematically shows a perspective view of the ultraviolet air sterilizer 301. In FIG. 6, an XYZ coordinate system is drawn. As shown in FIG. 6, the baffle plate 2 includes four curved plate-like members 302a and 302b each having an R-shaped cross section and radially arranged substantially orthogonally. As shown in FIG. 6, the plate-like members 302a and 302b can have a shape in which the width of the plate-like members 302a and 302b gradually decreases from the upper end to the lower end (first direction). For example, the baffle plate 2 includes two curved plate members 302a whose short sides extend in the Y direction and two curved plate members 302b whose short sides extend in the X direction. are placed in The plate-like members 302a and 302b forming the baffle plate 2 are not limited to having an R-shaped cross section, and various shapes such as a substantially U-shaped cross section can be applied.

In addition, in the ultraviolet air sterilizer 301 according to the fourth embodiment, except that the baffle plate 2 is configured by radially arranging four curved plate members substantially perpendicular to each other, the ultraviolet air It can have the same configuration as the sterilization device 1 .

In the ultraviolet air sterilizer 301, the baffle plate 2 is configured by radially arranging four curved plate members substantially perpendicular to each other. When the intake fan 4 operates, the air around the ultraviolet air sterilizer 301 is sucked by the intake fan 4, moves horizontally toward the air guide plate 2, and moves toward the air guide plate 2 (plate-like member 302a). , 302b) and is blocked by the baffle plate 2. After that, it moves downward along the plate-like member 2a that constitutes the baffle plate 2 while changing its direction downward. After that, the air is introduced into the air circulation portion 10 through the air inlet 3 provided in the upper portion of the casing portion 7 .

In the ultraviolet air sterilizer 301, the baffle plate 2 is composed of four curved plate-like members 302a and 302b, and can catch the air coming from different directions with respect to the baffle plate 2. Therefore, the amount of air captured by the baffle plate can be increased more than that of the flat plate-like member. Therefore, air flowing from the vicinity of the ultraviolet air sterilizer 301 can be sucked more efficiently than the ultraviolet air sterilizer 1 according to the first embodiment, and the air can be sterilized. By providing the baffle plate 2, a sufficient amount of air can flow into the casing portion 7 even if a small intake fan 4 is used for sucking the air. Energy saving can be realized.

In this embodiment, convex projections 11 are provided on the surfaces of the end portions of the baffle plate 2 (the surfaces of the curved plate-like members 302a and 302b). The protruding portion 11 having a convex shape can be provided at approximately the center of the surface of the end portion of the baffle plate 2 (the surfaces of the curved plate-like members 302a and 302b), or at both the end portion and approximately the center portion. can.

(Fifth embodiment)
Next, an ultraviolet air sterilizer 401 according to a fifth embodiment will be described. FIG. 7 is a diagram schematically showing a perspective view of the ultraviolet air sterilizer 401. As shown in FIG. Note that FIG. 7 depicts an XYZ coordinate system. As shown in FIG. 7, the baffle plate 2 includes four curved plate-like members 402a and 402b each having an R-shaped cross section and radially arranged substantially perpendicular to each other. As shown in FIG. 6, the plate-like members 402a and 402b have a shape in which the width of the plate-like members 402a and 402b gradually decreases in the direction from the upper end to the lower end (first direction). can be provided to extend spirally around the central axis of the baffle plate 2 . For example, the baffle plate 2 includes two curved plate members 402a whose short sides extend in the Y direction and two curved plate members 402b whose short sides extend in the X direction. are placed in The plate-like members 402a and 402b that constitute the baffle plate 2 are not limited to having an R-shaped cross section, and various shapes such as those having a substantially U-shaped cross section can be applied.

In addition, in the ultraviolet air sterilizer 401 according to the fifth embodiment, the baffle plate 2 is configured by radially arranging four curved plate-like members 402a and 402b substantially perpendicular to each other. , can have the same configuration as the ultraviolet air sterilizer 1 .

In the ultraviolet air sterilizer 401, the baffle plate 2 is configured by radially arranging four curved plate members substantially perpendicular to each other. When the intake fan 4 operates, the air around the ultraviolet air sterilizer 401 is sucked by the intake fan 4, moves horizontally toward the air guide plate 2, and moves toward the air guide plate 2 (plate-like member 402a). , 402b) and is blocked by the baffle plate 2. After that, it moves downward along the plate-like member 2a that constitutes the baffle plate 2 while changing its direction downward. After that, the air is introduced into the air circulation portion 10 through the air inlet 3 provided in the upper portion of the casing portion 7 .

In the ultraviolet air sterilizer 401, the baffle plate 2 is composed of four curved plate-like members 402a and 402b, and the air coming from different directions to the baffle plate 2 is also shaped like a tornado. Since it can be caught, the amount of air caught by the baffle plate can be even greater than that of the flat plate-like member. Therefore, air flowing from the vicinity of the ultraviolet air sterilizer 401 can be sucked more efficiently than the ultraviolet air sterilizer 1 according to the first embodiment, and the air can be sterilized. By providing the baffle plate 2, a sufficient amount of air can flow into the casing portion 7 even if a small intake fan 4 is used for sucking the air. Energy saving can be realized.

In the present embodiment, convex projections 11 are provided on the surfaces of the end portions of the baffle plate 2 (the surfaces of the curved plate-like members 402a and 402b). The protruding portion 11 having a convex shape can be provided at approximately the center of the surface of the end portion of the baffle plate 2 (the surfaces of the curved plate-like members 402a and 402b), or at both the end portion and approximately the center portion. can.

The air flow of the ultraviolet air sterilizer 1 according to this embodiment will be described in detail with reference to FIG.
The air around the ultraviolet sterilizer 1 sucked from the suction fan 4 passes through the baffle plate 2 and is sent into the casing 7 from the outside of the air inlet 3 . A light shielding plate 5 is installed on the leeward side of the intake fan 4 . The flow of air (airflow) 9 sent in passes through the space between the light shielding plate on the windward side and the light shielding plate on the leeward side, and passes through the air circulation portion 10, which is the space between the ultraviolet sterilization light source 6 and the casing 7. pass. At this time, the airflow 9 receives direct light from the ultraviolet sterilization light source 6 and is sterilized. The sterilized airflow 9 is blown out of the ultraviolet sterilizer from the air outlet 8. - 特許庁

Next, the air flow of the ultraviolet air sterilizer 401 according to the fifth embodiment will be described in detail with reference to FIG. The air around the ultraviolet sterilizer 1 drawn like a tornado from the intake fan 4 is sucked from the outside of the air inlet 3 through the baffle plate 2 and sent into the casing 7 . A light shielding plate 5 is installed on the leeward side of the intake fan 4 . The flow of air (airflow) 9 sent in passes through the space between the light shielding plate on the windward side and the light shielding plate on the leeward side, and passes through the air circulation portion 10, which is the space between the ultraviolet sterilization light source 6 and the casing 7. pass. At this time, the airflow 9 receives direct light from the ultraviolet sterilization light source 6 and is sterilized.
The sterilized airflow 9 is blown out of the ultraviolet sterilizer from the air outlet 8. - 特許庁

1 Ultraviolet air sterilizer 2 Air guide plate 2a Y-direction air guide plate 2b X-direction air guide plate 3 Air inlet 4 Inhalation fan 5 Light shielding plate 6 Ultraviolet sterilization light source 7 Casing 8 Air outlet 9 Air flow
10 Air circulation part
11 Baffle plate protrusion
11a End baffle plate protrusion
11b central baffle plate protrusion

Claims (5)

An ultraviolet air sterilizer for sterilizing air using an ultraviolet light source,
a casing portion having an air circulation portion through which air to be sterilized flows;
a baffle plate installed near the air inlet of the casing portion and extending in a first direction in which the casing extends;
an ultraviolet light source for irradiating the air circulation portion with ultraviolet light;
a suction fan section for sucking air from the air circulation section into the casing section,
The baffle plate is such that air flowing toward the baffle plate from the outside in a second direction crossing the first direction is blocked by the baffle plate and changed in direction to the first direction. An ultraviolet air sterilizer, characterized in that it is configured to be introduced into the air circulation part while the air is flowing.
The baffle plate has plate-like members arranged substantially radially,
The surface of the plate-like member is provided with a convex projection extending in the first direction for guiding the air blocked by the baffle plate into the air circulation section. The ultraviolet air sterilizer according to claim 1.
3. The ultraviolet air sterilizer according to claim 2, wherein the plate member has a flat or curved shape.
3. The ultraviolet air sterilizer according to claim 2, wherein the plate member extends spirally around the center axis of the baffle plate in the first direction.
5. The ultraviolet air sterilizer according to any one of claims 2 to 4, wherein the protrusion is provided near an end and/or substantially in the center of the plate member.

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