WO2022080387A1

WO2022080387A1 - Sterilization device

Info

Publication number: WO2022080387A1
Application number: PCT/JP2021/037784
Authority: WO
Inventors: 義一熊谷; 俊二二宮
Original assignee: 株式会社ビーイング
Priority date: 2020-10-12
Filing date: 2021-10-12
Publication date: 2022-04-21
Also published as: JP2022063660A; JP6964360B1

Abstract

[Problem] To efficiently sterilize air and provide a relatively large quantity of sterilized air, without giving rise to an increase in the size of a sterilization device. [Solution] In a sterilization device 1, a serpentine path D is formed inside a duct 2 by erecting partitioning plates 11A on a side wall 2A of the duct 2, erecting partitioning plates 11B on a side wall 2B of the same, and arranging the respective partitioning plates 11A, 11B in an alternating manner in the direction of flow of air in the duct 2. Furthermore, an air intake part 3 that causes air to flow into the serpentine path D is provided at one end side of the duct 2, and an air discharge part 4 that discharges the air which has flowed through the serpentine path D is provided at the other end side of the duct 2. An air intake-side UV ray radiating part 5 and an air discharge-side UV ray radiating part 6 are provided at end sections of the duct 2.

Description

Sterilizer

The present invention relates to a sterilizing device that sterilizes air using ultraviolet rays generated by an ultraviolet irradiation unit.

As a conventional sterilization device, there is a device that sterilizes air by irradiating the air in the duct with ultraviolet rays from an ultraviolet irradiation part such as an ultraviolet lamp while flowing air through the duct.

For example, in the air purifier described in Patent Document 1, an exhaust port is provided on the upper surface of the case body, an intake port is provided on the bottom surface thereof, and an LED that emits ultraviolet rays is provided in the center of the inside of the case body. A photocatalyst filter cartridge is placed around the LED, air flows into the case body from the intake port, and air is passed through the photocatalyst filter cartridge from the position of the LED and flowed to the exhaust port to exhaust the air. Deodorizing etc. are performed.

Further, in the ultraviolet irradiation air sterilizer described in Patent Document 2, an ultraviolet lamp is provided in the center of the inside of the duct, and a first set of baffle plates, a second set of baffle plates, and a partition plate are provided inside the duct. The air is sterilized by moving it around the ultraviolet lamp.

Japanese Unexamined Patent Publication No. 2006-0262339 Japanese Unexamined Patent Publication No. 2016-032620

In the above sterilization device, it is required to efficiently supply a large amount of sterilized air. For example, if the route for irradiating the air with ultraviolet rays is lengthened and the time for irradiating the air with ultraviolet rays is long, the air can be efficiently supplied while effectively sterilizing the air. It is required that the route for irradiating the ultraviolet rays is lengthened, but that the size of the sterilizing apparatus is not increased without arranging many ultraviolet irradiation apparatus.

However, in the air purifier described in Patent Document 1, the path through which air flows from the LED to the exhaust port via the photocatalyst filter cartridge is not long, and there is no device for lengthening the path, and the LED and the photocatalyst filter cartridge are not provided. Has a relatively short time to act on the flowing air. Therefore, it is difficult to supply a large amount of sterilized air.

Further, in the ultraviolet irradiation air sterilizer described in Patent Document 2, the air cannot be smoothly moved by the air guidance by the baffle plate and the partition plate provided around the ultraviolet lamp. Further, in a configuration in which air is moved while rotating around the ultraviolet lamp in the length direction of one ultraviolet lamp, the amount of air that can be sterilized by ultraviolet irradiation is relatively small.

The present invention has been made in view of the above circumstances, and it is intended to efficiently sterilize air and supply a relatively large amount of sterilized air without causing an increase in the size of the sterilizing device. The purpose.

The sterilization device according to one aspect of the present invention includes an intake unit that sucks in outside air, an exhaust unit that discharges internal air, and a duct that guides the air sucked by the intake unit to the exhaust unit. It is provided with a first vent hole formed at a position connecting the duct and the intake portion, and a second vent hole formed at a position connecting the duct and the exhaust portion, and the inside of the duct faces each other. On one of the side walls, there is a partition plate made of a material that transmits ultraviolet rays, which extends along the side wall and extends toward the other side wall facing the side wall and has a distance from the other side wall. A plurality of ducts are arranged side by side at intervals in the direction, and extend to the other side wall of the opposite side wall along the other side wall and extend toward the side wall surface of the one side facing the other side wall, and the one side thereof. A plurality of partition plates made of a material that transmits ultraviolet rays, which are spaced from the side wall, are provided side by side at intervals in one direction, and are provided on the partition plate provided on one side wall and the other side wall. The partition plates are arranged at positions that are staggered in one direction at intervals from the partition plate on the other side, and a meandering path is provided by both the partition plates and the opposite side walls of the one and the other. Further, it is provided at an intake side ultraviolet irradiation portion provided at a start point portion on the intake portion side of the meandering path in the duct and at an end point portion on the exhaust portion side of the meandering path in the duct. It is provided with an ultraviolet irradiation unit on the exhaust side.

The sterilization device as an invention according to a further aspect of the present invention includes an intake unit that sucks in outside air, a duct that extends in one direction and guides the air sucked by the intake unit, and the duct and the intake unit. A first vent hole formed at a position connecting the two, an exhaust port formed at an end of the duct different from the intake portion side and discharging the guided air, and an exhaust port provided inside the duct. A spiral partition plate composed of a rod-shaped ultraviolet irradiation portion extending in one direction and a spiral flat surface swirling around the ultraviolet irradiation portion, and the air flowing from the intake portion through the first ventilation hole. It is provided with a spiral path made of a material that transmits ultraviolet rays, which swirls around the ultraviolet irradiation portion and guides the exhaust port to the discharge port.

According to the present invention, it is possible to supply a relatively large amount of sterilized air while efficiently sterilizing air without inviting an increase in size of the sterilizing device.

It is a perspective view which shows the sterilization apparatus which concerns on 1st Embodiment of this invention. It is a vertical sectional view which shows the sterilization apparatus which concerns on 1st Embodiment of this invention, and shows the state which the air is flowing in a duct. It is a vertical sectional view which shows the sterilization apparatus which concerns on 1st Embodiment of this invention, and shows the state which the air of a duct is stagnant. It is a block diagram which shows the control system which controls the sterilization apparatus which concerns on 1st Embodiment of this invention. It is a vertical sectional view which shows the sterilization apparatus which concerns on 1st Embodiment of this invention, and shows the opening and closing operation of a flapper. It is a vertical sectional view which shows the modification of the sterilization apparatus which concerns on 1st Embodiment of this invention. It is a vertical sectional view which shows another modification of the sterilization apparatus which concerns on 1st Embodiment of this invention. It is a perspective view which shows the sterilization apparatus which concerns on 2nd Embodiment of this invention. It is a vertical sectional view which shows the sterilization apparatus which concerns on 2nd Embodiment of this invention, and shows the state which the air is flowing in the duct. It is a vertical sectional view which shows the modification of the sterilization apparatus which concerns on 2nd Embodiment of this invention. It is a block diagram which shows the control system which controls the modification of the sterilization apparatus which concerns on 2nd Embodiment of this invention.

Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

<First Embodiment>
FIG. 1 is a perspective view showing a sterilizing device according to the first embodiment of the present invention. Further, FIG. 2 is a vertical sectional view showing a sterilizing device according to an embodiment of the first invention. FIG. 3 is a vertical cross-sectional view showing a sterilizing device according to the first embodiment of the present invention, showing a state in which the air in the duct is stagnant.

As shown in FIGS. 1 and 2, the disinfectant device 1 according to the first embodiment of the present invention includes a duct 2, an intake unit 3, an exhaust unit 4, an intake side ultraviolet lamp 5, and an exhaust side ultraviolet lamp 6. And have. The sterilization device 1 may be provided with at least a mechanism for air sterilization by ultraviolet rays. In this embodiment, a mode in which the sterilizing device 1 includes a filter for collecting dust will be described.

The duct 2 is composed of a hollow housing having a prismatic outer shape. The duct 2 has

side walls

2A, 2B, 2C, 2D, an upper surface 2E, and a lower surface 2F. The side wall 2A of the duct 2 forms the left side surface portion of the duct 2 in FIG. The side wall 2B forms the right side surface portion of the duct 2 in FIG. The side wall 2C forms the front surface of the duct 2 in FIG. The side wall 2D forms the rear surface portion of the duct 2 in FIG.

The material of the duct 2 is not particularly limited, but is a material that blocks ultraviolet rays emitted from the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 in order to suppress the influence of ultraviolet rays on the periphery of the sterilizing device 1, for example, glass. It is preferably made of opaque synthetic resin or metal. In this embodiment, it is assumed that the material of the duct 2 is metal. In FIG. 1, the

side walls

2A, 2B, 2C, and 2D of the duct 2 are transparently shown for the purpose of clarifying the internal configuration.

An intake unit 3 is provided in the lower part of the duct 2, and an exhaust unit 4 is provided in the upper part of the duct 2.

Further, inside the duct 2, a plurality of plate-shaped partition plates 11A are attached to the side wall 2A. The partition plates 11A are provided on the side wall 2A at regular intervals in the vertical direction (Y direction in FIG. 1). The partition plate 11A has one side end portion in the X direction attached to the side wall 2A in FIG. 1, extends along the side wall 2A in the Z direction in FIG. 1, and is provided with the same length as the width of the side wall 2A. Further, the partition plate 11A extends from the side wall 2A toward the facing side wall 2B in the X direction in FIG. 1, but the side end portions of the partition plate 11A on the side wall 2B side are spaced from the side wall 2B at regular intervals. It is provided.

Similarly, inside the duct 2, a plurality of plate-shaped partition plates 11B are attached to the side wall 2B. The partition plate 11B is provided on the side wall 2B at regular intervals in the vertical direction. The partition plate 11B has one side end portion in the X direction attached to the side wall 2B in FIG. 1, extends along the side wall 2B in the Z direction in FIG. 1, and is provided with the same length as the width of the side wall 2B. Further, the partition plate 11B extends from the side wall 2B toward the facing side wall 2A in the X direction in FIG. 1, but the side end portions of the partition plate 11B on the side wall 2A side are spaced from the side wall 2A at regular intervals. It is provided.

Further, each partition plate 11A on the side wall 2A side and each partition plate 11B on the side wall 2B side are arranged at positions that are staggered in the vertical direction and at intervals from the other partition plate. As a result, the air from the intake portion 3 side at the lower part of the duct 2 toward the exhaust portion 4 at the upper part of the duct 2 passes between the partition plate 11A and the side wall 2B in the Y direction, and then along the partition plate 11A. It reaches the exhaust portion 4 side by repeating the movement of proceeding in the X direction, passing between the partition plate 11B and the side wall 2A in the Y direction, and then proceeding in the X direction along the partition plate 11B. That is, a meandering path D that moves air in the Y direction while swelling in the X direction is formed in the duct 2.

Although the partition plates 11A are provided at regular intervals in the vertical direction, they may be provided at regular intervals in one direction other than the vertical direction, and the partition plates 11A may be provided at regular intervals in a direction other than the vertical direction. It may be provided at a distance from the other partition plate 11A in one direction other than the above. Further, although the partition plate 11B is also provided at regular intervals in the vertical direction, it may be provided at regular intervals in one direction other than the vertical direction, and the partition plate 11B may be provided at regular intervals in a direction other than the vertical direction. It may be provided at a distance from the other partition plate 11B in one direction other than the direction.

Inside the duct 2, a ventilation hole 12A, which is an opening leading to the intake portion 3, is formed on the lower surface 2F. An intake side ultraviolet lamp (intake side ultraviolet irradiation unit) 5 is provided at a position above the ventilation hole 12A. As the ultraviolet lamp 5 on the intake side, for example, a UV-C wavelength of 280 nm or less is used, and more preferably, a lamp having a wavelength of around 260 nm is used. One end of the intake side ultraviolet lamp 5 is attached to the side wall 2C, and the other end is attached to the side wall 2D. That is, the intake side ultraviolet lamp 5 is arranged at the lower end (starting point) of the meandering path D. The intake side ultraviolet lamp 5 may be provided in either the duct 2 or the intake portion 3, but in the present embodiment, it will be described as being provided in the duct 2.

Further, inside the duct 2, a ventilation hole 15 which is an opening leading to the exhaust portion 4 is formed on the upper surface 2E. An exhaust side ultraviolet lamp (exhaust side ultraviolet irradiation unit) 6 is provided at a position below the ventilation hole 15. As the exhaust side ultraviolet lamp 6, for example, a UV-C wavelength of 280 nm or less is used, and more preferably, a lamp having a wavelength of around 260 nm is used. One end of the exhaust side ultraviolet lamp 6 is attached to the side wall 2C, and the other end is attached to the side wall 2D. That is, the exhaust side ultraviolet lamp 6 is arranged at the upper end (end point) of the meandering path D. The exhaust side ultraviolet lamp 6 may be provided on the exhaust portion 4 side as long as it is in the vicinity of the ventilation hole 15.

Each of the

partition plates

11A and 11B is made of a material that transmits the ultraviolet rays radiated from the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6. For example, the

partition plates

11A and 11B are plates made of polypropylene or quartz that transmit ultraviolet rays. The ultraviolet transmittance of polypropylene is about 70%, and the ultraviolet transmittance of quartz is higher than that of polypropylene. In this embodiment, the

partition plates

11A and 11B will be described as polypropylene.

The intake unit 3 is a hollow housing having a prismatic outer shape connected to the lower end of the duct 2, and has the same width and depth as the duct 2. The intake unit 3 and the duct 2 are connected to each other through a ventilation hole 12A.

A rectangular intake port 3B is formed on the side wall 3A of the intake unit 3. The intake port 3B is provided with a filter 13 that covers the intake port 3B. The filter 13 collects dust and the like contained in the air passing through the intake port 3B. The filter 13 is made of, for example, a known sponge-like synthetic resin sheet, a non-woven fabric, a breathable paper sheet, or the like. In this embodiment, the filter 13 will be described as a non-woven fabric.

Further, an intake fan 14 is provided inside the intake unit 3. The intake fan 14 is arranged at a position facing the filter 13 of the intake port 3B. That is, the intake fan 14 draws outside air from the intake port 3B into the inside of the intake unit 3 via the filter 13.

The exhaust unit 4 is a hollow housing having a prismatic outer shape connected to the upper end of the duct 2, and has a width narrower than that of the duct 2 and the same depth as the duct 2. The exhaust unit 4 and the duct 2 are connected to each other through a ventilation hole 15.

A rectangular exhaust port 4B that penetrates the inside and the outside of the exhaust portion 4 is formed on the side wall 4A of the exhaust portion 4. A flapper 16 is provided at the exhaust port 4B. The flapper 16 has a rectangular shape having a size larger than that of the exhaust port 4B, and only the upper side (upper portion) of the flapper 16 is attached to the side wall 4A of the exhaust portion 4. The flapper 16 is attached to the side wall 4A of the exhaust portion 4 so as to be swingable around the upper side thereof.

As shown in FIG. 3, when air is not exhausted from the exhaust port 4B, the flapper 16 hangs down due to its own weight and covers and closes the exhaust port 4B. Further, when air is exhausted from the exhaust port 4B, as shown in FIG. 2, the flapper 16 is pushed up to the outside of the exhaust portion 4 by the pressure of the air to open the exhaust port 4B. That is, the flapper 16 is pushed to the outside of the exhaust portion 4 by the air pressure in the exhaust port 4B generated by the intake fan 14 through the meandering path D to open the exhaust port 4B.

FIG. 4 is a block diagram showing a control system of the sterilization device 1. The sterilization device 1 includes a control unit 21. The control unit 21 is composed of a CPU, a RAM (RandomAccessMemory), a ROM (ReadOnlyMemory), and the like. The control unit 21 controls each operation mechanism of the sterilization device 1 according to a program stored in the ROM or the like by the CPU. The control unit 21 is arranged in, for example, the intake unit 3. The control unit 21 is connected to the intake fan 14, the intake side ultraviolet lamp 5, and the exhaust side ultraviolet lamp 6. The control unit 21 controls the rotation speed of the intake fan 14 at the time of rotation and stop, and rotation of the intake fan 14. Further, the control unit 21 turns on and off the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6.

When the sterilizing device 1 is in operation, the control unit 21 turns on the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 as the first operation, and continuously rotates the intake fan 14. The intake fan 14 sucks the outside air into the inside of the intake unit 3 through the filter 13 of the intake port 3B. The sucked air flows from the intake portion 3 to the meandering path D of the duct 2 through the ventilation hole 12A, moves through the meandering path D, and flows into the exhaust portion 4 through the ventilation hole 15. Further, the air flowing into the exhaust unit 4 pushes up the flapper 16 of the exhaust port 4B of the exhaust unit 4, opens the exhaust port 4B, and exits from the exhaust port 4B to the outside. Therefore, the air is taken in from the intake port 3B of the intake unit 3, enters the sterilization device 1, flows through the inside of the duct 2 from the bottom to the top through the meandering path D, and flows from the exhaust port 4B of the exhaust unit 4. It is exhausted.

At this time, the ultraviolet rays radiated from the intake side ultraviolet lamp 5 are directly irradiated to the air flowing from the intake unit 3 to the lower end (starting point) of the meandering path D of the duct 2 through the ventilation hole 12A, and the air is sterilized. Is done. Further, the ultraviolet rays radiated from the exhaust side ultraviolet lamp 6 are directly irradiated to the air flowing from the upper end of the meandering path D of the duct 2 into the exhaust portion 4 through the ventilation holes 15, and the air is sterilized.

Further, the ultraviolet rays radiated from the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 pass through the

partition plates

11A and 11B that transmit the ultraviolet rays, and are irradiated to the air flowing through the meandering path D. The ultraviolet rays radiated from the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 are not only the air around the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6, that is, the air near the ventilation holes 12A and the ventilation holes 15. The air that has passed through the ventilation hole 12A and is moving along the meandering path D toward the ventilation hole 15 is also irradiated. As a result, as compared with the case where the meandering path D is not provided in the duct 2 and the air heading straight from the ventilation hole 12A to the ventilation hole 15 is irradiated with ultraviolet rays by the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6. The time required to irradiate the air existing in the duct 2 with ultraviolet rays is increased by the time required for the air to move along the meandering path D. Therefore, the effect of sterilizing the air in the duct 2 can be further enhanced. Generally, in order to increase the amount of ultraviolet irradiation to air, it is necessary to arrange a large number of ultraviolet lamps and take a long ultraviolet irradiation area. On the other hand, in the present embodiment, since the meandering path D is adopted, it is possible to avoid increasing the size of the sterilizing device 1 even if the ultraviolet irradiation region is long. Further, since the meandering path D is sandwiched between the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6, it is possible to efficiently irradiate the air with ultraviolet rays without disposing a large number of ultraviolet lamps.

Further, as shown in FIG. 1, the meandering path D of the duct 2 is formed over the extending direction (Z direction) of the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6, and the air is moving along the meandering path D. As long as it is, it is irradiated with ultraviolet rays by the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6. Therefore, for example, the amount of air that can be sterilized by ultraviolet irradiation is relatively large as compared with the case where the air is moved while rotating around the ultraviolet lamp in the length direction of one ultraviolet lamp.

Further, as a second operation under the control of the control unit 21, the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 are turned on during the operation of the sterilizing device 1, but the intake fan 14 as in the first operation is continuously operated. Instead of rotating the intake fan 14, the intake fan 14 may be alternately stopped and driven as a second operation. That is, the control unit 21 controls to intermittently rotate the intake fan 14 while continuing to light the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6.

In this second operation, when the control unit 21 stops the intake fan 14, the air inside the exhaust unit 4 does not generate an air flow due to the intake fan 14, so that the flapper 16 is used as shown in FIG. It hangs down by its own weight and closes the exhaust port 4B of the exhaust unit 4. Therefore, it is prevented that the air in the sterilizing device 1 naturally leaks from the exhaust port 4B, and the air in the intake unit 3, the meandering path D, and the exhaust unit 4 stays in the sterilizing device 1. At this time as well, since the ultraviolet rays are irradiated by lighting the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6, the time for the air to be irradiated with the ultraviolet rays in the sterilizing device 1 can be further extended, and the air is sterilized. Can be performed more reliably. Then, when the control unit 21 starts the rotation of the intake fan 14 after the intake fan 14 is stopped, air flows in from the intake port 3B of the intake unit 3 and flows through the meandering path D, and the air flows into the exhaust unit 4. As shown in FIG. 5, the flapper 16 is opened by air pressure due to this air flow, and the sterilized air is exhausted from the exhaust port 4B of the exhaust unit 4.

Further, in the second operation, the control unit 21 passes through the meandering path D from the time when the air taken in the sterilizing device 1 passes through the arrangement position of the intake side ultraviolet lamp 5 in the duct 2. Assuming that the time until passing through the arrangement position of the ultraviolet lamp 6 on the exhaust side is T1, the rotation drive time T2 of the intake fan 14 during the intermittent operation of the intake fan 14 may be made the same as the time T1. good. In this case, when the rotary drive of the intake fan 14 is restarted, the air sufficiently sterilized by the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 is accurately discharged in the meandering path D when the intake fan 14 is stopped. Air that has been newly taken into the sterilizing device 1 and has not yet been sufficiently sterilized by the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 in the meandering path D can be retained in the sterilizing device 1.

Further, in the second operation of performing the intermittent operation of the intake fan 14, the control unit 21 sets the normal rotation speed S1 when the intake fan 14 is rotationally driven to a rotation speed S2 (S2 <. By setting S1), it is possible to prolong the time for eradication by the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 in the meandering path D as compared with the case of the rotation speed S1. Further, the control unit 21 makes the stop time of the intake fan 14 shorter than the normal stop time T3 by the amount of the longer sterilization time by the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6. Control may be performed with the time T4. In this case, the sterilized air is used during the normal intermittent operation while ensuring the same effect as the sterilizing force obtained in the normal intermittent operation in which the rotation speed S1 of the intake fan 14 and the stop time T3 of the intake fan 14 are set. It can be discharged more slowly than.

As a further embodiment, not only the intake side ultraviolet lamp 5 and the exhaust side ultraviolet lamp 6 are arranged at the lower end and the upper end of the duct 2 (meandering path D), but also in the middle of the meandering path D as shown in FIG. May be provided with one or more additional UV lamps 22. This makes it possible to increase the irradiation amount of ultraviolet rays on the air flowing through the meandering path D and to sterilize the air more quickly.

Further, the inner wall surfaces of the

side walls

2A, 2B, 2C, 2D, the upper surface 2E, and the lower surface 2F of the duct 2 may be formed of a material that reflects ultraviolet rays. For example, the inner wall surface of the duct 2 is plated with a metal such as aluminum to form a metal layer that reflects ultraviolet rays, or the inner wall surface of the duct 2 is painted white. In these cases, the ultraviolet rays are repeatedly reflected on the inner wall surface of the duct 2 and the ultraviolet rays are distributed to every corner of the meandering path D, so that the air traveling in the meandering path D can be sterilized more effectively.

Further, as a further embodiment, (1) a filter 13 and an intake fan 14 are provided in the intake port 3B of the intake unit 3, and (2) a flapper 16 is provided in the exhaust port 4B of the exhaust unit 4 (1). Instead of (2), as shown in FIG. 7, the exhaust port 4 is provided with a filter 23 at the exhaust port 4B and an exhaust fan 24 for exhausting air through the filter 23, and the intake port 3B of the intake unit 3 is provided with a filter 23. A flapper 25 for opening and closing the intake port 3B may be provided, and the control unit 21 may control the rotation of the exhaust fan 24, the rotation speed during rotation, and the stop. The flapper 25 has a rectangular shape having a size larger than that of the intake port 3B, and only the upper side of the flapper 25 is attached to the inner wall of the intake portion 3. The flapper 25 is supported on the inner wall side of the side wall 3A so as to be swingable around the upper side of the flapper 25. In the further embodiment, it is preferable that the control unit 21 is provided in the exhaust unit 4.

In this case, when the control unit 21 performs intermittent operation of the exhaust fan 24 and stops the exhaust fan 24 as in the case of the second operation described above, when the exhaust fan 24 is stopped, the air from the intake port 3B into the sterilization device 1 is discharged. The flow stops, and the flapper 25 hangs down under its own weight to close the intake port 3B of the intake unit 3. As a result, it is possible to prevent the air outside the sterilizing device 1 from naturally entering the sterilizing device 1 from the intake port 3B, and the air in the sterilizing device 1 is used in the intake unit 3, the meandering path D, and the exhaust unit 4. Stagnation. As a result, the irradiation time of the ultraviolet rays to the air in the sterilization device 1 can be further extended, and the sterilization of the air can be performed more reliably. Then, when the control unit 21 restarts the rotation of the exhaust fan 24 after the exhaust fan 24 is stopped, the flapper 25 is generated in the intake unit 3 by the air that is about to flow out of the sterilization device 1 from the exhaust port 4B. At the same time as being opened by the negative pressure, the air outside the sterilizing device 1 flows in from the intake port 3B and flows through the meandering path D, and the air is further exhausted from the exhaust port 4B of the exhaust unit 4, whereby the sterilization is performed. Air is exhausted from the exhaust port 4B of the exhaust unit 4.

<Second Embodiment>
The sterilization apparatus according to the second embodiment of the present invention will be described. FIG. 8 is a perspective view showing a sterilizing device according to a second embodiment of the present invention. FIG. 9 is a vertical sectional view showing a sterilizing device according to a second embodiment of the present invention.

As shown in FIGS. 8 and 9, the sterilizing device 31 according to the second embodiment includes a duct 32, an intake unit 33, and a rod-shaped ultraviolet lamp 34.

The duct 32 is a cylindrical hollow housing. An ultraviolet lamp 34 is provided at the center of the duct 32 in the radial direction. The lower end of the ultraviolet lamp 34 is fixed to the inner bottom portion of the intake portion 33. A spiral partition plate 35 having a smooth spiral curved surface is provided around the ultraviolet lamp 34. The end of the spiral partition plate 35 on the opposite side of the ultraviolet lamp 34 is fixed to the inner wall of the duct 32. Further, the end portion of the spiral partition plate 35 on the ultraviolet lamp 34 side is (1) slightly away from the ultraviolet lamp 34 to the extent that it does not come into contact with the ultraviolet lamp 34, or (2) comes into contact with the ultraviolet lamp 34. It extends to the position on the UV lamp 34 side. The inner wall of the duct 32 and the spiral partition plate 35 that swirls around the ultraviolet lamp 34 and extends in the vertical direction (Y direction in FIG. 8) form a spiral path R that guides air in the duct 32. There is.

Further, (3) the ultraviolet lamp 34 is arranged in a tubular member made of a material that extends in the same direction as the ultraviolet lamp 34 and transmits ultraviolet rays (that is, the outer periphery of the ultraviolet lamp 34 is covered with the tubular member). The spiral partition plate 35 may be provided so that the end portion of the spiral partition plate 35 on the ultraviolet lamp 34 side is brought into close contact with the tubular member. In this case, as compared with the case of (1) above, it is possible to eliminate the leakage of air inside the spiral partition plate 35 so that the air flows through the spiral path R.

The spiral partition plate 35 is made of a material that transmits ultraviolet rays radiated from the ultraviolet lamp 34. The spiral partition plate 35 is, for example, a plate made of polypropylene or quartz that transmits ultraviolet rays. In the present embodiment, the spiral partition plate 35 will be described as polypropylene.

The material of the duct 32 is not particularly limited, but a material that blocks ultraviolet rays in order to suppress the influence of ultraviolet rays on the periphery of the duct 32, for example, glass, an opaque synthetic resin, or a metal is preferable. In this embodiment, the duct 32 will be described as a metal.

The intake unit 33 is a hollow housing having a prismatic outer shape connected to the lower end of the duct 2. The intake portion 33 and the duct 32 are connected to each other through a ventilation hole 42.

For example, a rectangular intake port 33B is formed on the side wall 33A of the intake unit 33. The intake port 33B is provided with a filter 43 that covers the intake port 33B. The filter 43 collects dust and the like contained in the air passing through the intake port 33B. The filter 43 is made of, for example, a known sponge-like synthetic resin sheet, a non-woven fabric, a breathable paper sheet, or the like. In the present embodiment, the filter 43 will be described as a non-woven fabric.

Further, an intake fan 44 is provided inside the intake unit 33. The intake fan 44 is arranged at a position facing the filter 43 of the intake port 33B. That is, the intake fan 44 draws outside air from the intake port 33B into the inside of the intake unit 33 via the filter 43.

Then, in the sterilization device 31, the ultraviolet lamp 34 is turned on and the intake fan 44 is rotated under the control of the control unit 21 (FIG. 11). As a result, the air drawn from the intake portion 33 into the duct 32 through the ventilation hole 42 flows into the spiral path R of the duct 32, passes through the spiral path R, and is an exhaust port which is the upper opening end of the duct 32. It is exhausted from 32A.

At this time, the ultraviolet rays emitted from the ultraviolet lamp 34 at the center of the spiral path R of the duct 32 are directly irradiated to the air flowing through the spiral path R, and the air is continuously sterilized.

Further, the ultraviolet rays radiated from the ultraviolet lamp 34 are irradiated to the air flowing through the spiral path R even if they pass through the spiral partition plate 35, so that the air is always ultraviolet rays while flowing through the spiral path R. Can be irradiated, and air is efficiently sterilized.

That is, in the sterilization device 31 of the present embodiment, since air is flowed through the spiral path R inside the duct 32 and the air from the intake unit 33 is guided to the discharge port 32A, the spiral path is inside the duct 32. When R is not provided, the air existing in the duct 32 is irradiated with ultraviolet rays rather than the air directed straight from the ventilation hole 42 to the discharge port 32A by the ultraviolet lamp 34. The time required for air to travel along the spiral path R is increased by the amount of time required. Therefore, the effect of sterilizing the air in the duct 32 can be further enhanced.

Further, since the spiral path R is formed of a spiral partition plate 35 having a spiral smooth curved surface, for example, air is guided by a combination of a flat baffle plate and a partition plate around an ultraviolet lamp. The resistance between the guidance mechanism (spiral path R) and the air when guiding the air around the ultraviolet lamp is smaller than in the case of adopting the configuration in which the path is provided. Therefore, a large amount of air can be smoothly guided from the ventilation hole 42 to the discharge port 32A through the spiral path R.

Further, when a material made of a material that reflects ultraviolet rays is applied as the inner wall surface of the duct 32, the ultraviolet rays are repeatedly reflected by the inner wall surface of the duct 32 and reflected against the air flowing through the spiral path R. Since the ultraviolet rays can be further irradiated, the sterilization of the air flowing through the spiral path R can be performed more effectively. Further, it is prevented that the ultraviolet rays leak to the outside of the duct 32 and affect the surroundings.

FIG. 10 is a vertical sectional view showing a modified example of the sterilization device 31. In the sterilization device 31 of this modification, a hole 33D having the same diameter as or slightly larger than the cylindrical duct 32 is formed in the top plate 33C of the hollow housing of the intake unit 33. The lower end of the duct 32 is inserted into the hole 33D. The duct 32 is rotatably supported in the hole 33D by the hole 33D. In this case, the structure of the above-mentioned (1) or (3) is adopted as the structure of the spiral partition plate 35 with respect to the ultraviolet lamp 34. In the case of (3), the ultraviolet lamp 34 and the tubular member are not in contact with each other.

Further, a drive motor 51 is provided inside the intake unit 33. A rubber roller 52 that rotates together with the rotating shaft is fixed to the rotating shaft of the drive motor 51. The rubber roller 52 is arranged in a state of being pressed against the outer periphery of the lower end portion of the duct 32.

The control unit 21 controls the rotary drive of the drive motor 51. When the drive motor 51 is rotationally driven under the control of the control unit 21 (FIG. 11), the rubber roller 52 rotates. Since the rubber roller 52 is pressed against the outer periphery of the lower end portion of the duct 32, the duct 32 rotates due to the friction between the rubber roller 52 and the outer peripheral surface of the duct 32. As a result, the duct 32 rotates and stops according to the rotation and stop of the drive motor 51. Further, the rotation direction of the duct 32 is switched by switching the rotation direction of the drive motor 51. As the rotation speed of the drive motor 51 changes, the rotation speed of the duct 32 also changes. At this time, since the spiral partition plate 35 inside the duct 32 is provided separately from the ultraviolet lamp 34 and integrally with the duct 32, the spiral partition plate 35 rotates the ultraviolet lamp 34 together with the duct 32. Rotate and stop while staying in the center of.

FIG. 11 is a block diagram showing a control system of the sterilizing device 31 related to the above-mentioned modified example. The control unit 21 is composed of a CPU, a RAM (RandomAccessMemory), a ROM (ReadOnlyMemory), and the like. The control unit 21 controls each operation mechanism of the sterilization device 31 according to a program stored in the ROM or the like by the CPU. The control unit 21 is arranged, for example, in the intake unit 33. The control unit 21 is connected to the intake fan 44, the drive motor 51, and the ultraviolet lamp 34. The control unit 21 controls the rotation speed of the intake fan 44 at the time of rotation, stop, and rotation of the intake fan 44. Further, the control unit 21 turns on and off the ultraviolet lamp 34. Further, the control unit 21 controls the rotation and stop of the drive motor 51, the rotation direction, and the rotation speed. The rotation, stop, rotation direction, and rotation speed of the duct 32 and the spiral partition plate 35 are changed by the control of the drive motor 51 by the control unit 21.

The control unit 21 turns on the ultraviolet lamp 34, continuously rotates the intake fan 44, and further rotates and drives the drive motor 51 when the sterilization device 31 is in operation. The intake fan 44 sucks the outside air into the inside of the intake portion 33 through the filter 43 of the intake port 33B. The sucked air enters the spiral path R in the duct 2 from the intake portion 33. At this time, since the spiral partition plate 35 and the duct 32 are rotated by the drive motor 51, an air flow is also generated in the spiral path R by the rotation of the spiral partition plate 35, and the discharge port 32A by the spiral path R is generated. The guidance of the air toward is smooth.

For example, in the control unit 21, the direction of the air flow in the spiral path R generated by the rotation of the spiral partition plate 35 coincides with the direction of the air flow in the spiral path R due to the rotation of the intake fan 44. The drive motor 51 is rotationally driven in the direction. In this case, the air moves more smoothly in the spiral path R. At this time, as the rotation speed of the spiral partition plate 35 increases, the amount of air flowing through the spiral path R increases.

In the control unit 21, the direction of the air flow in the spiral path R generated by the rotation of the spiral partition plate 35 is opposite to the direction of the air flow in the spiral path R due to the rotation of the intake fan 44. The drive motor 51 may be rotationally driven in such a direction. In this case, the rotation of the spiral path R obstructs the flow of air toward the discharge port 32A. Therefore, the movement of air in the spiral path R is suppressed. At this time, as the rotation speed of the spiral partition plate 35 increases, the amount of air flowing through the spiral path R decreases.

That is, the amount of air discharged from the duct 32 is adjusted by controlling the rotation direction and rotation speed of the drive motor 51 by the control unit 21.

The sterilizing device 1 according to the present embodiment is also an air purifying device in that the

sterilizing devices

1 and 31 shown in the present embodiment include a filter for collecting dust. Further, the one without a filter for collecting dust is also an embodiment of the

sterilizing devices

1 and 31.

Further, the present invention is not limited to the sterilizing device of the above embodiment, and various modifications are possible. Further, the configurations of the above-described embodiments and modifications described with reference to FIGS. 1 to 11 are merely examples of the present invention, and the present invention is not intended to be limited to the above-mentioned configurations.

1 Bactericidal device 2

Ducts

2A, 2B, 2C, 2D Side wall

2E Top surface

2F Bottom surface 3 Intake part

3A Side wall

3B Intake port 4 Exhaust part

4A Side wall

4B Exhaust port 5 Intake side ultraviolet lamp 6 Exhaust side

ultraviolet lamp

11A, 11B Partition plate 12A Vent 13 Filter 14 Intake fan 15 Vent 16 Flapper 21 Control 22 UV lamp 23 Filter 24 Exhaust fan 25 Flapper 31 Bactericidal device 32 Duct 32A Outlet 33 Intake

33A Side wall 33B Intake

33C Top plate 33D Hole 34 UV lamp 35 Spiral partition plate 42 Vent hole 43 Filter 44 Intake fan 51 Drive motor 52 Rubber roller R Spiral path

Claims

The intake part that sucks in outside air and
The exhaust part that exhausts the internal air and
A duct that guides the air sucked by the intake unit to the exhaust unit,
A first vent formed at a position connecting the duct and the intake portion,
It is provided with a second ventilation hole formed at a position connecting the duct and the exhaust portion.
Inside the duct,
A partition plate made of a material that transmits ultraviolet rays, which extends along the side wall and extends toward the other side wall facing the side wall and has a distance from the other side wall, is provided on one of the facing side walls. Multiple pieces are placed side by side at intervals in one direction.
A material that transmits ultraviolet rays to the other side of the opposite side wall, extending along the other side wall and extending toward the side of the one side wall facing the other side wall, and having a distance from the one side wall. A plurality of partition plates made of the above are provided side by side at intervals in one direction.
The partition plate provided on one side wall and the partition plate provided on the other side wall are arranged at positions that are staggered in one direction and at intervals from the other side wall. A meandering path is formed by both the partition plate and the one and the other side walls facing each other.
The first vent and the second vent are located at different positions in the one direction and are located between the one side wall and the other side wall in the arrangement direction of the one side wall and the other side wall. It is installed in the same central position and
Further, at the duct side or the intake portion side of the first ventilation hole which is the starting point portion of the meandering path on the intake portion side in the duct, at a position where air flows from the intake portion into the meandering path. The intake side ultraviolet irradiation part provided only, and
Provided only at the duct side or the intake portion side of the second ventilation hole, which is the end point portion of the meandering path on the exhaust portion side, and at a position where air flows from the meandering path to the exhaust portion. A sterilization device including an exhaust side ultraviolet irradiation unit.
A fan is provided in the intake portion to suck air into the intake portion from an intake port formed in the intake portion and generate an air flow toward the meandering path.
An upper part is attached to a part of the exhaust part above the exhaust port formed in the exhaust part in the vertical direction as the one direction, and the lower part hangs down due to its own weight to close the exhaust port, and the fan The sterilization device according to claim 1, further provided with a flapper that is pushed to the outside of the exhaust portion by the air pressure at the exhaust port generated through the meandering path to open the exhaust port.
The intake part that sucks in outside air and
The exhaust part that exhausts the internal air and
A duct that guides the air sucked by the intake unit to the exhaust unit,
A first vent formed at a position connecting the duct and the intake portion,
It is provided with a second ventilation hole formed at a position connecting the duct and the exhaust portion.
Inside the duct,
A partition plate made of a material that transmits ultraviolet rays, which extends along the side wall and extends toward the other side wall facing the side wall and has a distance from the other side wall, is provided on one of the facing side walls. Multiple pieces are placed side by side at intervals in one direction.
A material that transmits ultraviolet rays to the other side of the opposite side wall, extending along the other side wall and extending toward the side of the one side wall facing the other side wall, and having a distance from the one side wall. A plurality of partition plates made of the above are provided side by side at intervals in one direction.
The partition plate provided on one side wall and the partition plate provided on the other side wall are arranged at positions that are staggered in one direction and at intervals from the other side wall. A meandering path is formed by both the partition plate and the one and the other side walls facing each other.
Further, an intake side ultraviolet irradiation portion provided at a starting point portion on the intake portion side of the meandering path in the duct, and an ultraviolet irradiation portion on the intake side.
The exhaust side ultraviolet irradiation portion provided at the end point portion of the meandering path on the exhaust portion side in the duct is provided.
A fan for generating an air flow for discharging the air inside the exhaust section to the outside of the exhaust section from the exhaust port formed in the exhaust section is provided in the exhaust section.
The upper part is attached to the upper part of the intake port in the vertical direction as the one direction, and the lower part hangs down due to its own weight to the part of the intake part above the intake port formed in the intake part. A sterilization device provided with a flapper that is closed and is pushed toward the inside of the intake portion by the air pressure at the intake port generated by the fan through the meandering path to open the intake port.
The intake part that sucks in outside air and
The exhaust part that exhausts the internal air and
A duct that guides the air sucked by the intake unit to the exhaust unit,
A first vent formed at a position connecting the duct and the intake portion,
It is provided with a second ventilation hole formed at a position connecting the duct and the exhaust portion.
Inside the duct,
A partition plate made of a material that transmits ultraviolet rays, which extends along the side wall and extends toward the other side wall facing the side wall and has a distance from the other side wall, is provided on one of the facing side walls. Multiple pieces are placed side by side at intervals in one direction.
A material that transmits ultraviolet rays to the other side of the opposite side wall, extending along the other side wall and extending toward the side of the one side wall facing the other side wall, and having a distance from the one side wall. A plurality of partition plates made of the above are provided side by side at intervals in one direction.
The partition plate provided on one side wall and the partition plate provided on the other side wall are arranged at positions that are staggered in one direction and at intervals from the other side wall. A meandering path is formed by both the partition plate and both the one and the other side walls facing each other, and further, an intake side ultraviolet irradiation portion provided at a starting point portion of the meandering path on the intake portion side in the duct.
The exhaust side ultraviolet irradiation portion provided at the end point portion of the meandering path on the exhaust portion side in the duct is provided.
A fan is provided in the intake portion to suck air into the intake portion from an intake port formed in the intake portion and generate an air flow toward the meandering path.
An upper part is attached to a part of the exhaust part above the exhaust port formed in the exhaust part in the vertical direction as the one direction, and the lower part hangs down due to its own weight to close the exhaust port, and the fan A flapper that is pushed to the outside of the exhaust portion by the air pressure at the exhaust port generated through the meandering path to open the exhaust port is further provided.
A control unit that drives and controls the fan is further provided.
The control unit intermittently drives the fan by repeating rotational drive and stop of the fan.
When the air taken into the intake unit while the fan is rotationally driven passes through the arrangement position of the intake side ultraviolet irradiation unit, it passes through the meandering path and the exhaust side ultraviolet irradiation unit is arranged. When the time until passing through the setting position is T1, the control unit sets the time T2 for rotationally driving the fan to be the same as the time T1 and intermittently drives the fan.
The sterilizing device according to any one of claims 1 to 4, wherein the side wall of the duct is made of a material that reflects ultraviolet rays.
The sterilization device according to any one of claims 1 to 5, wherein a further ultraviolet irradiation unit is provided in the meandering path.
The intake part that sucks in outside air and
A duct that extends in one direction and guides the air taken in by the intake unit,
A first vent formed at a position connecting the duct and the intake portion,
An discharge port formed at the end of the duct different from the intake portion side and for discharging the guided air, and a discharge port.
A rod-shaped ultraviolet irradiation unit provided inside the duct and extending in one direction,
A spiral partition plate formed of a spiral flat surface that swirls around the ultraviolet irradiation portion, and the air flowing from the intake portion through the first ventilation hole is swirled around the ultraviolet irradiation portion. Equipped with a spiral path made of a material that transmits ultraviolet rays, which guides to the outlet.
The spiral partition plate is rotatably provided with the ultraviolet irradiation unit as a rotation center.
A fan that sucks air into the intake unit and generates an air flow toward the spiral path.
A rotary drive unit that rotates the spiral partition plate,
A sterilization device including a control unit that controls the fan and the rotation drive unit.
The sterilization device according to claim 7, wherein the control unit controls the rotation speed of the fan and controls the rotation drive unit to change the rotation speed and the rotation direction of the spiral partition plate.
The sterilizing device according to claim 7 or 8, wherein the side wall of the duct is made of a material that reflects ultraviolet rays.