Ozone emission method, ozone emission device and room

Abstract

To provide an ozone emission method in which ozone can be appropriately diffused.SOLUTION: An ozone emission method in a space sterilization device 1 being an ozone emission device that emits ozone accompanied with an air flow comprises: an arranging step of arranging the space sterilization device 1 in an arrangeable region 22 determined on the basis of the volume and shape of a space to be sterilized 12 being a subject space of ozone emission; and an emission step of emitting ozone into the space to be sterilized 12 by the space sterilization device 1 arranged in the arranging step.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present disclosure relates to an ozone releasing method, an ozone releasing device, and a room for sterilizing a space to be sterilized using ozone. [Background technology]

[0002] A space sterilization device using ozone has been introduced as one of the means for sterilizing viruses. For example, Patent Document 1 discloses a space sterilization device (ozone gas sterilizer) in which an ozone decomposition filter is provided upstream of an ozone generator. The space sterilization device described in Patent Document 1 can emit ozone so that the ozone concentration in a space such as an operating room is constant throughout the space without emitting ozone at a concentration exceeding the intended concentration, and has a compact size that is convenient for moving. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2017-136191 A Summary of the Invention [Problem to be solved by the invention]

[0004] In the technology described in Patent Document 1, ozone is diffused in a small space such as an operating room. However, as the size of the space increases, for example in a medium to large space, it may be difficult to diffuse ozone appropriately depending on the placement position of the spatial sterilization device. When it is difficult to diffuse ozone appropriately, effective sterilization may not be achieved.

[0005] The present disclosure has been made in view of the above, and aims to provide an ozone releasing method capable of appropriately diffusing ozone. [Means for solving the problem]

[0006] In order to solve the above-mentioned problems and achieve the objective, the ozone releasing method disclosed herein is an ozone releasing method in an ozone releasing device that releases ozone by accompanying it with an airflow, and includes an arrangement step in which the ozone releasing device is arranged in a possible arrangement area determined based on the volume and shape of a space in which ozone is to be released, and a releasing step in which the ozone releasing device arranged in the arrangement step releases ozone into the space in which ozone is to be released. Effect of the Invention

[0007] According to the present disclosure, an effect of being able to appropriately diffuse ozone is achieved. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is a diagram showing an example of a room in which a spatial sterilization device according to a first embodiment is installed. [Diagram 2] FIG. 1 is a plan view of an example of a room according to the first embodiment; [Diagram 3] FIG. 1 is a diagram showing a schematic external view of a spatial sterilization device according to a first embodiment. [Figure 4] FIG. 1 is a diagram showing an example of a functional configuration of a spatial sterilization device according to a first embodiment. [Diagram 5] FIG. 1 shows the placement position and blowing direction of the spatial sterilization device under condition #1 of embodiment 1. [Figure 6] A contour diagram of the ozone concentration (ozone gas concentration) on the symmetric plane obtained as a result of the simulation under condition #1 of the first embodiment. [Figure 7] A contour diagram of ozone concentration on a horizontal plane obtained as a result of simulation under condition #1 of embodiment 1. [Figure 8] FIG. 13 shows the arrangement position and blowing direction of the spatial sterilization device under condition #2 of embodiment 1. [Figure 9] A contour diagram of ozone concentration on a symmetric plane obtained as a result of a simulation under condition #2 of the first embodiment. [Figure 10] A contour diagram of ozone concentration on a horizontal plane obtained as a result of simulation under condition #2 of embodiment 1. [Figure 11]FIG. 13 shows the arrangement position and blowing direction of the spatial sterilization device under condition #3 of embodiment 1. [Figure 12] A contour diagram of ozone concentration on a symmetric plane obtained as a result of a simulation under condition #3 of the first embodiment. [Figure 13] A contour diagram of ozone concentration on a horizontal plane obtained as a result of simulation under condition #3 of the first embodiment. [Figure 14] FIG. 1 is a table showing the results of the simulation according to the first embodiment. [Figure 15] FIG. 1 is a diagram for explaining the blowing direction in the first embodiment; [Figure 16] FIG. 1 shows an example of an arrangement position of the spatial sterilization device according to the first embodiment. [Figure 17] FIG. 1 is a diagram for explaining a blowing angle according to the first embodiment; [Figure 18] A contour diagram of velocity (wind speed) obtained as a simulation result under condition #4 of the first embodiment. [Figure 19] A contour diagram of ozone concentration on a symmetric plane obtained as a result of a simulation under condition #4 of the first embodiment. [Figure 20] A contour diagram of velocity (wind speed) obtained as a simulation result under condition #5 of the first embodiment. [Figure 21] A contour diagram of ozone concentration on a symmetric plane obtained as a result of simulation under condition #5 of the first embodiment. [Figure 22] A contour diagram of velocity (wind speed) obtained as a simulation result under condition #6 of the first embodiment. [Figure 23] A contour diagram of ozone concentration on a symmetric plane obtained as a result of a simulation under condition #6 of the first embodiment. [Figure 24] FIG. 1 is a diagram showing an example of an arrangement possible area of ​​the first embodiment when the sterilization target space is a rectangular parallelepiped with a square floor surface. [Diagram 25] FIG. 13 is a diagram showing an example of an arrangement possible area of ​​the first embodiment when the sterilization target space has unevenness; [Figure 26] FIG. 13 shows an example of the arrangement of the spatial sterilization device according to the second embodiment. [Figure 27] FIG. 13 is a diagram showing another example of the arrangement of the spatial sterilization device according to the second embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] Hereinafter, an ozone releasing method, an ozone releasing device, and a room according to an embodiment will be described in detail with reference to the drawings.

[0010] Embodiment 1 FIG. 1 is a diagram showing an example of a room in which the spatial sterilization device according to the first embodiment is set. The spatial sterilization device 1 is an example of an ozone release device that releases ozone. As shown in FIG. 1, a room 10 is provided with the spatial sterilization device 1. The spatial sterilization device 1 of the present embodiment sterilizes the space in the room 10 by using ozone (ozone gas). More specifically, the spatial sterilization device 1 releases, for example, ozone gas into the room 10 by causing it to accompany an airflow. The room 10 is, for example, a medium- to large-sized section (area) such as an office room, a store, an educational facility, a conference room, a meeting hall, a medical facility, a theater, a movie theater, or a stadium. The use of the room 10 is not limited to these examples and may be any use.

[0011] Although not shown in FIG. 1, the room 10 has a ceiling, and is surrounded by, for example, a partition member 11. The space surrounded by the partition member 11 is a sterilization target space 12, which is a space to be sterilized by the spatial sterilization device 1. The sterilization target space 12 is an example of an ozone release target space from which ozone is released. "Enclosed" here does not only mean that the room is always surrounded, but also includes a case where the space inside the room 10 and the space outside the room 10 are temporarily connected to each other via a door, window, etc. of the room 10. The partition member 11 is, for example, a wall (a side wall), a ceiling, and a floor.

[0012] As described above, when the room 10 is a medium- to large-sized section, the sterilization target space 12 is a medium- to large-sized space. 3 However, the definition of a medium- to large-scale space is not limited to this, and can include spaces with a volume of 500m 3The space may be of a volume of 750m or more. 3 The medium- to large-sized space may be defined by its floor area. In an office or the like, the height of the room 10, i.e., the height of the sterilization target space 12, is often about 2.5 m. Therefore, for example, a medium- to large-sized space may be defined by a floor area of ​​80 m. 2 The space may be more than 200 m2, or the floor area may be 200 m2 or more. 2 The space may be more than 300 m2, or the floor area may be 300 m2 or more. 2 The above space may be used. The height of the sterilization target space 12 is not limited to this example. Below, an example will be described in which the sterilization target space 12 of the spatial sterilization device 1 is a medium- to large-sized space, but the sterilization method of this embodiment may be applied to cases in which the sterilization target is a space other than a medium- to large-sized space.

[0013] Here, as shown in FIG. 1, an example will be described in which the shape of the room 10, i.e., the shape of the sterilization target space 12, is a rectangular parallelepiped. However, as described later, the shape of the sterilization target space 12 is not limited to a rectangular parallelepiped. In the example shown in FIG. 1, the interior of the room 10, i.e., the sterilization target space 12, is a rectangular parallelepiped, so the shape of the floor in the plan view of the room 10 is a rectangle with a long side A and a short side B. In this embodiment, an arrangement possible area 22, which is a range in which the spatial sterilization device 1 can be arranged, is determined based on the volume and shape of the sterilization target space 12. The arrangement possible area 22 is, for example, two areas in which the distance in the horizontal plane from two wall surfaces at both ends of the long side of the floor is C or less, as shown in FIG. The spatial sterilization device 1 is installed within this arrangement possible area 22. As a result, in this embodiment, even if the sterilization target space 12, which is the space to be sterilized and the space to be sterilized that is the space to be sterilized and the space to be sterilized is a medium- to large-sized space, an appropriate sterilization effect can be obtained. Here, an example in which the spatial sterilization device 1 is used for sterilization will be described, but the configuration and operation of this embodiment can also be used for applications other than sterilization using ozone gas, such as deodorization and antifungal measures. That is, as described above, the spatial sterilization device 1 is an example of an ozone release device that releases ozone gas, and by arranging the ozone release device in the method described in this embodiment and having the ozone release device release ozone gas into a space, not only sterilization but also deodorization and antifungal measures can be effectively implemented. That is, the ozone release method of this embodiment is applicable to sterilization, deodorization, antifungal treatment, mold inactivation treatment, etc., and the ozone release method of this embodiment is an ozone release method in an ozone release device that forms an airflow and releases ozone gas accompanied by the airflow, and includes an arrangement step in which the ozone release device is arranged in an arrangement possible area determined based on the volume and shape of the ozone release target space, and a release step in which the ozone release device arranged in the arrangement step releases ozone gas into the ozone release target space. By applying the ozone releasing method of this embodiment to anti-mold treatment or mold inactivation treatment, mold spores floating in the air or target space can be sterilized, and the mold reproduction cycle can be fundamentally suppressed.

[0014] The following effects can be obtained with the configuration and operation of this embodiment for mold prevention. For mold to visibly grow or emit an odor, mold spores in the air flow into the room together with the outside air, grow under environmental conditions favorable for growth, such as temperature, humidity, and moisture and nutrients for growth, and then generate spores and scatter them into the air, repeating the growth cycle of mold. However, it is difficult to notice the growth until the above-mentioned state occurs and damage occurs. Here, with the configuration and operation of this embodiment, by releasing ozone gas into the space, in addition to sterilizing visible mold, it is possible to suppress the continuation of the mold growth cycle by sterilizing invisible mold and mold spores floating in the air with ozone gas, so that an appropriate mold prevention effect can be obtained for the range where the ozone gas is diffused, including hard-to-reach places in the room.

[0015] For example, if the direction in which the spatial sterilization device 1 releases ozone gas is the blowing direction 30, as shown in FIG. 1, when the blowing direction 30 is one direction, the ozone gas is unlikely to diffuse in the area from the side of the blowing direction 30 to the rear direction. When the space to be sterilized is a small space, even if such an area exists, the overall volume is small, so that the ozone gas is likely to wrap around from other places and the ozone gas is likely to diffuse throughout. On the other hand, when a medium- to large-sized space is to be sterilized, the area in which the ozone gas is unlikely to diffuse becomes wide depending on the arrangement position of the spatial sterilization device 1. Since ozone gas is easily decomposed, if the area in which the ozone gas is unlikely to diffuse is wide, even if the ozone gas wraps around from other places, the decomposition of the ozone gas advances before the ozone gas spreads throughout the entire space, and a place with a low ozone concentration is generated. For this reason, in this embodiment, the spatial sterilization device 1 is arranged so that the area in which the ozone gas is unlikely to diffuse becomes narrow. For example, a person or an information processing device described later determines the volume and shape based on a drawing of the room 10 or based on measurement results, and determines the arrangement possible area 22, which is the range in which the spatial sterilization device 1 can be arranged, so that the area into which ozone gas does not easily diffuse is narrowed based on the volume and shape of the sterilization target space 12. Then, the spatial sterilization device 1 is arranged within the determined arrangement possible area 22. This allows the ozone gas to be diffused efficiently.

[0016] 1, for example, an area including a center 20 that is the geometric center of the space to be sterilized 12 is defined as a central area 21, and an area within the space to be sterilized 12 other than the central area 21 (area hatched with diagonal lines) is defined as an arrangement area 22. In other words, the arrangement area 22 is defined as an area within the space to be sterilized 12 excluding the central area 21 that includes the center 20 of the space to be sterilized 12. By arranging the space sterilization device 1 within the arrangement area 22 so that the blowing direction 30 faces the central area 21, the area from the side to the rear of the space sterilization device 1 can be narrowed compared to when the space sterilization device 1 is arranged near the center 20, and ozone gas can be diffused efficiently.

[0017] For example, in sterilization using ozone, the sterilization effect is determined by the CT value (Concentration-Time Value), which is the product of the concentration of ozone gas (ozone concentration) and the time exposed to ozone, so it is desirable that the ozone concentration be equal to or higher than a set target value in all locations in the sterilization target space 12. If the area in which ozone gas does not diffuse easily is large, there is a high possibility that locations with low ozone concentration will occur in the area. In particular, in a medium- to large-sized space, it takes time for ozone gas to diffuse, so that natural attenuation of ozone gas is more likely to progress, and the larger the volume, the higher the possibility that there will be more openings to the outside, such as outlets and exhaust ports. For this reason, when the sterilization target space 12 is a medium- to large-sized space, there is a high possibility that the ozone concentration will decrease in the sterilization target space 12. In this embodiment, by installing the spatial sterilization device 1 in the arrangement possible area 22, the area in which ozone gas does not diffuse easily can be narrowed compared to when the spatial sterilization device 1 is installed near the center 20, and locations with low ozone concentration are less likely to occur. This can improve the sterilization effect.

[0018] In addition, if the air volume when the spatial sterilization device 1 releases ozone gas is increased, the decrease in ozone concentration can be prevented, but disadvantages such as an increase in the weight of the spatial sterilization device 1, an increase in power consumption, and difficulty in handling arise. In addition, the decrease in ozone concentration can be prevented by increasing the ozone concentration (blowout concentration) when the spatial sterilization device 1 releases ozone gas, but in this case, the ozone concentration around the spatial sterilization device 1 may become too high. If the spatial sterilization device 1 is installed in the arrangement possible area 22 described in this embodiment, a location with a low ozone concentration is less likely to occur than when the spatial sterilization device 1 is arranged near the center 20 without increasing the air volume or the ozone concentration at the time of release. Therefore, the ozone gas can be efficiently diffused while maintaining the air volume and the ozone concentration at the time of release within a certain range.

[0019] FIG. 2 is a plan view of an example of the room 10 of the present embodiment. FIG. 2 is a plan view of the part below the ceiling of the room 10 shown in FIG. 1, seen from above. In the example shown in FIG. 1, the inside of the room 10, i.e., the sterilization target space 12, is a rectangular parallelepiped, so the shape of the floor in the plan view of the room 10 is a rectangle with a long side A and a short side B. If the length of the long side of this rectangle is A, in the example shown in FIG. 2, the arrangement possible area 22 is an area from the wall at the end of the long side to a position at a distance of A / 4 from the wall, and the central area 21 is an area sandwiched between the arrangement possible areas 22 on both sides. Note that here, the range from the wall at the end of the long side to a position at a distance of A / 4 from the wall is set as the arrangement possible area 22, but this is just one example, and the arrangement possible area 22 may be determined according to the volume and shape of the sterilization target space 12 by a simulation, experiment, theoretical calculation, or the like, which will be described later. In the case where the floor shape of the room 10 is rectangular as in the example shown in Figures 1 and 2, the ozone gas can be efficiently diffused by releasing the ozone gas from a point close to the wall at the end of the long side toward the center 20 so that the ozone gas can be efficiently diffused along the long side.

[0020] The volume and shape of the sterilization target space 12 are calculated based on, for example, a drawing of the room 10. This calculation may be performed manually or by the space sterilization device 1 or a sterilization management device (not shown). The sterilization management device obtains the volume and shape, for example, using a drawing, according to a set rule, or by machine learning or the like. The sterilization management device, which is an information processing device, holds correspondence information indicating the correspondence between the volume and shape and the information indicating the arrangement possible area 22, for example, in a table format, and obtains information indicating the arrangement possible area 22 corresponding to the volume and shape using the calculated volume and shape and the correspondence information. The correspondence information is determined by simulation, experiment, theoretical calculation, or the like, as described above. The sterilization management device may perform the simulation, or a device other than the sterilization management device may perform the simulation. The sterilization management device presents the information indicating the arrangement possible area 22 to the user, for example, by displaying the information. The information indicating the possible arrangement area 22 may be a diagram illustrating the possible arrangement area 22, or may indicate a range using letters and numbers, such as the range from the wall that is the end of the long side to a position that is A / 4 away from the wall in Fig. 2. The sterilization management device is realized, for example, by a computer system, and a program stored in a memory in the computer system is executed by a processor in the computer system to realize the function of the sterilization management device. The sterilization management device may be realized by multiple computer systems, for example, by a cloud system.

[0021] Also, for example, a measuring means (measuring device) for measuring the volume and shape of the sterilization target space 12 may be provided, and the sterilization management device may determine the placement position using the measurement results obtained by the measuring means. The measuring means may be, for example, but is not limited to, a photographing means such as a camera, or a measuring device such as a three-dimensional measuring device. Also, the sterilization management device may use the data obtained by the measuring means to obtain information on the volume and shape of the sterilization target space by utilizing image recognition, machine learning, or the like.

[0022] Furthermore, when the volume and shape are calculated manually, the sterilization management device may receive an input of the volume and shape, and use the input volume and shape and the corresponding information to obtain information indicating the allocable area 22 corresponding to the volume and shape. Note that the method of managing the allocable area 22 is not limited to the example using the sterilization management device, and the allocable area 22 determined by simulation, experiment, theoretical calculation, or the like may be managed manually.

[0023] Fig. 3 is a diagram showing a schematic external view of the spatial sterilization device 1 of the present embodiment. In the example shown in Fig. 3, the spatial sterilization device 1 is a floor-standing device. As shown in Fig. 3, the spatial sterilization device 1 has a housing 2, and the housing 2 is provided with an outlet 3 and an inlet 4.

[0024] Fig. 4 is a diagram showing an example of a functional configuration of the spatial sterilization device 1 of the present embodiment. As shown in Fig. 4, the spatial sterilization device 1 includes an ozone generating unit 5, an air blowing unit 6, and a control unit 7. Although not shown in Fig. 4, the spatial sterilization device 1 includes a housing 2 as shown in Fig. 3, and the ozone generating unit 5, the air blowing unit 6, and the control unit 7 are provided, for example, inside the housing 2. Although not shown in Fig. 4, the spatial sterilization device 1 may include at least one of an input receiving unit that receives input from a user, and a display unit that displays various setting information and the like.

[0025] The ozone generator 5 generates ozone gas by applying power to an ozone generating UV (UltraViolet) lamp such as a maxima lamp. Note that the method of generating ozone gas in the ozone generator 5 (method of generating ozone gas) is not limited to this example.

[0026] The blower 6 forms an air flow from the inlet 4 shown in Fig. 3 toward the outlet 3 shown in Fig. 3. The blower 6 is, for example, a blower such as a blower fan, but is not limited thereto. The ozone gas generated by the ozone generator 5 is mixed with the air sucked from the inlet 4, and the ozone gas having a predetermined blowing concentration is discharged from the outlet 3.

[0027] The control unit 7 controls the ozone generating unit 5 and the blowing unit 6. The control unit 7 controls, for example, the air volume of the blowing unit 6 and controls the concentration of the ozone gas generated by the ozone generating unit 5. For example, an input means (not shown) such as a touch panel accepts the selection of an air volume mode from a user, and the control unit 7 controls the air volume of the blowing unit 6 according to the selected air volume mode. Alternatively, the input means may accept the selection of the mode of the ozone concentration to be released (for example, high concentration / low concentration), and the control unit 7 may determine the air volume, i.e., the range of the airflow, based on the result of the mode selection and the volume and shape of the sterilization target space 12, and control the air volume of the blowing unit 6 based on the determined air volume. The control unit 7 is, for example, a processing circuit, and the processing circuit may be a control circuit having a processor such as a CPU or MPU and a memory, or may be a processing circuit as dedicated hardware such as an ASIC (Application Specific Integrated Circuit) or an FPGA (Field Programmable Gate Array). When the processing circuit is a control circuit, the function of the control unit 7 is realized by the processor executing a program stored in the memory. In addition, when the air volume and the blowing density are fixed, the control unit 7 does not need to be provided.

[0028] The elevation and depression angles of the blowing direction 30 in the spatial sterilization device 1 may be adjustable. As described above, the spatial sterilization device 1 is installed so that the blowing direction 30 faces the central region 21 (towards the central region 21), but the elevation and depression angles of the blowing direction 30, i.e., the angle with respect to the horizontal plane, may be adjustable. Hereinafter, the angle of the blowing direction 30 in the vertical plane when directly below is set to 0 degrees, i.e., the angle obtained by adding 90 degrees to the elevation angle of the blowing direction 30, is also referred to as the blowing angle. The blowing angle may be manually adjustable, or the input receiving unit may receive an input of the blowing angle from a user or an installer of the spatial sterilization device 1, output the received information to the control unit 7, and the control unit 7 may adjust the blowing angle. There are no particular restrictions on the mechanism for adjusting the blowing angle, and any mechanism may be used. The spatial sterilization device 1 may also be capable of adjusting the horizontal angle of the blowing direction 30, i.e., the azimuth angle.

[0029] Next, the outlet height will be described. The outlet height is the height of the outlet 3 from the floor surface of the space 12 to be sterilized, and is the distance from the floor surface of the space 12 to be sterilized to the outlet 3. In the example shown in Fig. 3, since the space sterilization device 1 is a floor-standing device, the height 31 from the bottom surface of the housing 2 of the space sterilization device 1 to the outlet 3 is the outlet height.

[0030] When equipment such as an office desk, a copy machine, a cabinet, production equipment in a factory, and educational equipment is installed in the room 10, i.e., the sterilization target space 12, the equipment may become an obstacle and prevent the diffusion of ozone gas into the room 10. For this reason, it is desirable that the air outlet height is higher than the height of the desk (generally said to be 60 to 72 cm), for example, 75 cm or more. That is, when the spatial sterilization device 1 is installed in the sterilization target space 12, the air outlet height is desirably 75 cm or more. This has the effect of preventing documents on the desk from scattering. The air outlet height is not limited to 75 cm or more, and may be set according to the height of the equipment installed in the room 10. For example, the air outlet height may be set to be equal to or higher than the maximum height of the equipment, or, when multiple pieces of equipment are installed, may be set to be equal to or higher than the height of a specific piece of equipment.

[0031] Note that since ozone gas is heavier than air, there is no particular restriction on the upper limit of the outlet height, and the ceiling height may be set as the upper limit of the outlet height. Considering the operability and maintainability of the spatial sterilization device 1, the outlet height is preferably, for example, 150 cm or less. Restrictions on the outlet height may be reflected when designing the spatial sterilization device 1, or the outlet 3 of the spatial sterilization device 1 may be variable.

[0032] In addition, FIG. 3 shows an example in which the spatial sterilization apparatus 1 is a floor-mounted apparatus, but the present invention is not limited thereto, and the spatial sterilization apparatus 1 may be a ceiling-mounted apparatus or may be installed on equipment or the like. When the spatial sterilization apparatus 1 is a ceiling-mounted apparatus, the air outlet height is fixed to the height of the ceiling, so there is no need to impose any constraints on the air outlet height. When the spatial sterilization apparatus 1 is a ceiling-mounted apparatus, the air outlet direction 30 is diagonally downward. Furthermore, when the spatial sterilization apparatus 1 is placed on equipment or the like, the spatial sterilization apparatus 1 is installed so that the height of the equipment plus the height 31 from the bottom surface of the housing 2 of the spatial sterilization apparatus 1 to the air outlet 3 satisfies the constraints on the air outlet height.

[0033] Next, the results of a simulation for determining the possible arrangement area 22 will be described. The arrangement position of the spatial sterilization device 1 was changed to perform a simulation of the diffusion of ozone gas in the sterilization target space 12. Specifically, the diffusion of ozone gas in the sterilization target space 12 was analyzed under the following analysis conditions by a CFD (Computational Fluid Dynamics) simulation (a numerical analysis / simulation in which equations related to fluid motion or their derivatives are solved by a computer using numerical solutions of partial differential equations, etc.).

[0034] The analysis conditions for the sterilization target space 12 are as follows: The shape of the sterilization target space 12 is a rectangular parallelepiped, and the height of the sterilization target space 12 is 2.5 m. In addition, if the length of the long side of the rectangular floor surface of the sterilization target space 12 is A and the length of the short side of the rectangular floor surface is B, then A = 15 m and B = 10 m.

[0035] The analysis conditions for the spatial sterilization device 1 were as follows, and the analysis time was 50 minutes (min). -Blowout concentration: 4.2ppm ·Air volume: 6.0m 3 / min ·Wind speed: 0.56m / s -Blow direction: Parallel to the long side Blowing angle: 0 degrees (horizontal) -Blowout height: 1.75m

[0036] Regarding the placement position of the spatial sterilization apparatus 1, three types of conditions, Condition #1 to Condition #3, were set, and an analysis corresponding to each condition was performed. In all of Condition #1 to Condition #3, the floor-standing spatial sterilization apparatus 1 was installed along the wall surface at the end of the short side of the rectangular floor surface of the sterilization target space 12, and only the placement position along the long side of the rectangle of the spatial sterilization apparatus 1 (placement position in the long side direction) was made different between Condition #1 to Condition #3 as described below. Note that the analysis conditions other than the placement position of the spatial sterilization apparatus 1 were common. Condition #1: Long side position: End (wall) Condition #2: Long side position: A / 4 away from the wall Condition #3: Position of the long side: Center of the long side (A / 2 away from the wall)

[0037] FIG. 5 is a diagram showing the arrangement position and blowing direction 30 of the spatial sterilization device 1 under condition #1 of this embodiment. FIG. 5 is a plan view of the sterilization target space 12 viewed from above. Under condition #1, the spatial sterilization device 1 is arranged so as to contact the wall surface at the end in the long side direction and the wall surface at the end in the short side direction. That is, the spatial sterilization device 1 is arranged in the lower right corner of the paper, which is one of the four corners of the floor surface of the sterilization target space 12. As shown in FIG. 5, the spatial sterilization device 1 is installed so that the blowing direction 30 is parallel to the long side and faces the central region 21. The pressure boundary 60 and the symmetric plane 70 are set at the positions shown in FIG. 5. The target surface is the wall surface on the lower side of the paper, and is a surface shown in a contour diagram of a plane including the vertical direction, which will be described later.

[0038] FIG. 6 is a contour diagram of the ozone concentration (ozone gas concentration) on a symmetric plane 70 obtained as a simulation result under condition #1 of this embodiment. As shown in FIG. 5, the symmetric plane 70 is a plane including the wall surface (wall surface including the long side) at the end of the short side of the wall surface to which the spatial sterilization apparatus 1 contacts and the vertical direction (height direction). FIG. 7 is a contour diagram of the ozone concentration on a horizontal plane obtained as a simulation result under condition #1 of this embodiment. FIG. 7 shows contour diagrams at four heights, namely, the floor surface (height 0 m), the space (height 1.0 m), the space (height 2.0 m), and the ceiling surface (height 2.5 m). The heights are the heights from the floor surface of the sterilization target space 12. Note that in the contour diagram at the top of FIG. 7, the lower left corner of the paper is the arrangement position of the spatial sterilization apparatus 1, since it corresponds to a state in which the plan view of the sterilization target space 12 shown in FIG. 5 is rotated 90 degrees clockwise. The lower part of FIG. 7 shows a schematic side view of the sterilization target space 12 as seen from the wall side of the short side end of the floor of the room 10, in order to indicate the height corresponding to each contour diagram.

[0039] FIG. 8 is a diagram showing the arrangement position and blowing direction 30 of the spatial sterilization device 1 under condition #2 of this embodiment. FIG. 8 is a plan view of the sterilization target space 12 as seen from above, similar to FIG. 5. Under condition #2, the arrangement position of the spatial sterilization device 1 is a position in contact with the wall surface at the end of the short side direction in the vertical direction of the paper, similar to condition #1, but unlike condition #1, the arrangement position is a position between the wall surface (wall surface at the end of the long side) and the center (on the perpendicular line from the center 20 to the long side) in the long side direction, that is, a position that is the midpoint between the wall surface at the end of the long side and the center of the long side at the bottom of the paper. That is, the arrangement position in the long side direction is a position where the distance from the wall surface at the end of the long side is A / 4. Also, as shown in FIG. 8, under condition #2, similar to condition #1, the spatial sterilization device 1 is installed so that the blowing direction 30 is parallel to the long side and faces the central region 21.

[0040] FIG. 9 is a contour diagram of the ozone concentration on the symmetric plane 70 obtained as a simulation result of condition #2 of this embodiment. FIG. 10 is a contour diagram of the ozone concentration on a horizontal plane obtained as a simulation result of condition #2 of this embodiment. In FIG. 10, similar to FIG. 7, contour diagrams are shown at four heights, namely, the floor surface (height 0 m), the space (height 1.0 m), the space (height 2.0 m), and the ceiling surface (height 2.5 m). Note that in the contour diagram shown in FIG. 10, the spatial sterilization device 1 is disposed at a position A / 4 above the lower left corner of the paper, in order to correspond to a state in which the plan view of the sterilization target space 12 shown in FIG. 8 is rotated 90 degrees clockwise.

[0041] FIG. 11 is a diagram showing the arrangement position and blowing direction 30 of the spatial sterilization device 1 in condition #3 of this embodiment. FIG. 11 is a plan view of the sterilization target space 12 as seen from above, similar to FIG. 5. In condition #3, the arrangement position of the spatial sterilization device 1 is a position in contact with the wall surface at the end of the short side direction in the vertical direction of the paper as in condition #1, but is a position at the center, i.e., the midpoint in the long side direction, unlike condition #1. That is, the arrangement position in the long side direction is a position at a distance of A / 2 from the wall surface at the end of the long side. Also, as shown in FIG. 11, in condition #3, the spatial sterilization device 1 is installed so that the blowing direction 30 is parallel to the long side and toward the left of the paper as in conditions #1 and #2.

[0042] FIG. 12 is a contour diagram of the ozone concentration on the symmetric plane 70 obtained as a simulation result of condition #3 of this embodiment. FIG. 13 is a contour diagram of the ozone concentration on a horizontal plane obtained as a simulation result of condition #3 of this embodiment. In FIG. 13, similar to FIG. 7, contour diagrams are shown at four heights, namely, the floor surface (height 0 m), the space (height 1.0 m), the space (height 2.0 m), and the ceiling surface (height 2.5 m). Note that in the contour diagram shown in FIG. 13, the spatial sterilization device 1 is disposed at a position A / 2 above the lower left corner of the paper, in order to correspond to a state in which the plan view of the sterilization target space 12 shown in FIG. 11 is rotated 90 degrees clockwise.

[0043] As can be seen from Fig. 6, Fig. 9 and Fig. 12, under condition #3, compared to conditions #1 and #2, there are areas with low ozone concentration behind the spatial sterilization device 1, i.e., in the direction opposite to the blowing direction 30 as seen from the spatial sterilization device 1. It can also be seen from Fig. 7, Fig. 10 and Fig. 13 that under condition #3, the ozone concentration is biased compared to conditions #1 and #2.

[0044] FIG. 14 is a diagram summarizing the simulation results of this embodiment in a table format. In FIG. 14, the maximum and minimum ozone concentrations are summarized for each height. The first row of FIG. 14 shows the results of condition #1, the second row of FIG. 14 shows the results of condition #2, and the third row of FIG. 14 shows the results of condition #3. If the target value of the ozone concentration to ensure the necessary CT value is 1.0 ppm, then in condition #3, there will be a location where the ozone concentration in the sterilization target space 12 is below the target value, but in conditions #1 and #2, the ozone concentration in the sterilization target space 12 can be made equal to or higher than the target value. For this reason, as shown in FIG. 2, by setting the possible arrangement area 22 to an area from the wall surface at the end of the long side of the floor surface to a position where the distance from the wall surface to the wall surface is 1 / 4 of the length of the long side of the rectangle for each of the wall surfaces at both ends of the long side, efficient sterilization can be achieved. Although the target value of the ozone concentration is determined as a numerical value here, it is not limited to this, and the target value of the ozone concentration may be determined as a ratio to the blowing concentration, such as X% of the blowing concentration.

[0045] In the above simulation, the blowing direction 30 of the spatial sterilization device 1 is parallel to the long side direction, but it is not limited thereto. As long as the blowing direction 30 is a direction toward the central region 21, the region from the side to the rear of the blowing direction 30 of the spatial sterilization device 1 can be narrowed, and it is considered that the same effect as the above example can be achieved. Here, facing the central region 21 means, for example, that a line extending in the blowing direction 30 from the blowing port 3 of the spatial sterilization device 1 as a starting point passes through the central region 21. Note that when ozone gas is actually released from the spatial sterilization device 1, the direction in which the ozone gas is released may be not only the blowing direction 30 but also a certain degree of spread.

[0046] 15 is a diagram for explaining the blowing direction 30 of this embodiment. The blowing direction 30 may be a direction toward the central region 21, but is more preferably a direction toward a region close to the center 20. That is, the blowing direction 30 may be, for example, a direction toward a central portion (a direction toward the central portion), which is a specified range including the center 20 of the sterilization target space 12, and the central portion may be the central region 21 or may be narrower than the central region 21.

[0047] 15 illustrates three types of blowing directions 30, which correspond to lines 61, 62, and 63, respectively. The lines 61, 62, and 63 are lines extending the blowing directions 30 from the outlet 3 of the spatial sterilization device 1 as a starting point. The line 61 intersects with a line extending in the height direction from the center 20 of the space 12 to be sterilized. For example, the central portion may be a line extending in the height direction from the center 20, in which case the central portion is a point in the plan view, and the blowing direction 30 is a direction intersecting with a line extending in the height direction from the center 20, like the line 61.

[0048] The central portion may be a surface 23 that passes through the center 20 and is perpendicular to the long side of the floor surface. The central portion may also be a range 24 that is within a certain distance from the center 20. In this case, for example, a line 62 passes through the range 24 but a line 63 does not pass through the range 24, so that the blowing direction 30 corresponding to the line 62 corresponds to the direction facing the central portion, but the blowing direction 30 corresponding to the line 63 does not correspond to the direction facing the central portion.

[0049] The above definition of the central portion is one example, and the central portion is not limited to the above example, but may be set appropriately according to the shape of the space to be sterilized 12 so as to include the center 20 of the space to be sterilized 12 .

[0050] Furthermore, in the above-mentioned conditions #1 to #3, the spatial sterilization device 1 is placed along the wall surface that is the end of the short side of the floor surface, i.e., the wall surface that is in contact with the long side of the floor surface, but the spatial sterilization device 1 may be placed anywhere within the placement possible area 22.

[0051] Fig. 16 is a diagram showing examples of arrangement positions of the spatial sterilization device 1 of this embodiment. Fig. 16 shows four arrangement positions, 51 to 54, and the spatial sterilization device 1 may be arranged, for example, at any of the arrangement positions 51 to 54, or may be arranged at any other arrangement position as long as it is within the arrangement possible area 22.

[0052] Next, the blowing angle will be described. As described below, the blowing angle may also be restricted. FIG. 17 is a diagram for explaining the blowing angle of this embodiment. As described above, the blowing angle is the angle in the vertical plane when the angle directly below is 0 degrees, that is, the angle obtained by adding 90 degrees to the elevation angle. In particular, when the sterilization target space 12 is a medium- to large-sized space, the desirable blowing angle is in the range of 90 degrees or more and 90 degrees + θ or less. This is because if the blowing angle is less than 90 degrees, the ozone gas will head toward the floor surface, making it difficult for the ozone gas to diffuse to the back of the room 10, and if the blowing angle is too large than 90 degrees + θ, the ozone gas will collide with the ceiling, making it difficult for the ozone gas to diffuse. For example, when the space sterilization device 1 is a floor-mounted type, θ can be calculated by the following formula (1). Note that A is the length of the long side of the floor of the room 10 (space 12 to be sterilized), Hb is the blowing height, D is the depth of the spatial sterilization device 1, i.e., the distance in the long side direction from the rear wall of the spatial sterilization device 1 to the blowing outlet 4, and H is the height of the room 10. θ=tan -1 {((H-Hb)÷(AD))} (1)

[0053] Furthermore, when the spatial sterilization device 1 is a ceiling-mounted type, the desirable blowing angle is in the range of 90 degrees-θ or more and 90 degrees or less. Since it is assumed that the diffusion performance will deteriorate if the ozone gas collides with the floor on the way, θ can be calculated, for example, by the following formula (2). Note that formulas (1) and (2) are merely examples, and θ may be determined by simulation or the like, and the method of determining θ is not limited to the above-mentioned example. θ=tan -1 {(Hb÷(AD))} (2)

[0054] The effect of ozone gas diffusion due to differences in blowing angle was also confirmed by simulation. The analysis conditions were as follows. The shape of the sterilization target space 12 was assumed to be a rectangular parallelepiped, and the height of the sterilization target space 12 was assumed to be 7.4 m. In addition, the length of the long side of the rectangular floor surface of the sterilization target space 12 was assumed to be A, and the length of the short side of the rectangular floor surface was assumed to be B, so A = 22 m and B = 4.5 m.

[0055] The analysis conditions for the spatial sterilization device 1 were as follows, and the analysis time was 60 minutes (min). - Position and blowing direction: Same as condition #1 -Blowout concentration: 4.2ppm ·Air volume: 10.0m 3 / min ·Wind speed: 2.0m / s -Blow direction: Parallel to the long side -Blowout height: 1.75m

[0056] Regarding the blowing angle, three types of angles were set as Condition #4 to Condition #6, namely, 95.7 degrees (almost straight to the side), 135 degrees (diagonally upwards at 45 degrees), and 180 degrees (straight above), and the analysis was performed.

[0057] Fig. 18 is a contour diagram of velocity (wind speed) obtained as a simulation result under condition #4 of the present embodiment. Fig. 19 is a contour diagram of ozone concentration at symmetry plane 70 obtained as a simulation result under condition #4 of the present embodiment.

[0058] Fig. 20 is a contour diagram of velocity (wind speed) obtained as a simulation result under condition #5 of the present embodiment. Fig. 21 is a contour diagram of ozone concentration at symmetry plane 70 obtained as a simulation result under condition #5 of the present embodiment.

[0059] Fig. 22 is a contour diagram of velocity (wind speed) obtained as a simulation result under condition #6 of the present embodiment. Fig. 23 is a contour diagram of ozone concentration at symmetry plane 70 obtained as a simulation result under condition #6 of the present embodiment.

[0060] As can be seen from Figures 18 to 22, the efficiency of ozone gas diffusion under condition #6 is poorer than under conditions #4 and #5. Moreover, the minimum concentrations (minimum values ​​of ozone concentration) on the ceiling and floor under conditions #4 to #6 are as follows: ·Condition #4: 1.28ppm ·Condition #5: 1.35ppm ·Condition #6: 1.10ppm

[0061] As described above, the minimum concentration is equal to or higher than the target value of 1.0 ppm in all cases, but the minimum concentration is also lower in condition #6 because the efficiency of diffusion is lower than in conditions #4 and #5. Therefore, by setting the blowing angle to a range of 90 degrees or more and 90 degrees + θ or less, the ozone gas can be diffused efficiently.

[0062] That is, when expressed using the elevation angle of the blowing direction 30, the elevation angle of the blowing direction 30 is in the range from 0 degrees to the threshold value θ. For example, when the threshold value (θ) is 45 degrees, the elevation angle of the blowing direction 30 in condition #4 and condition #5 is in the range from 0 degrees to the threshold value θ. As the simulation results show, it is assumed that the diffusion efficiency is higher in condition #4 and condition #5, which are in the range from 0 degrees to the threshold value θ, than in condition #6, which is outside this range. Thus, although setting θ to 45 degrees has the effect of suppressing the decrease in the diffusion efficiency, in order to diffuse more efficiently, it is preferable that θ is determined by the above formula (1) or formula (2), etc.

[0063] In the above, an example has been described in which the sterilization target space 12 is a rectangular parallelepiped with a rectangular floor surface, but the shape of the sterilization target space 12 is not limited to this. For example, the sterilization target space 12 may be a rectangular parallelepiped with a square floor surface. Fig. 24 is a diagram showing an example of the arrangement possible area 22 of this embodiment when the sterilization target space 12 is a rectangular parallelepiped with a square floor surface. In this case, since the floor surface is a square, all sides of the square are long sides and short sides, so one side of the square is set to A, and the arrangement possible area 22 may be an area from each wall surface of the square up to a distance of A / 4 from the wall surface.

[0064] Furthermore, if the sterilization target space 12 has projections and recesses, the projections and recesses may be smoothed to form a rectangular parallelepiped with the same volume, and the possible arrangement area 22 may be determined in the same manner as in the above-mentioned example. Fig. 25 is a diagram showing an example of the possible arrangement area 22 of this embodiment when the sterilization target space 12 has projections and recesses. As shown by the dashed line in Fig. 25, the uneven parts may be smoothed to form the floor surface into a rectangle including the dashed line, and the position up to a distance of A / 4 from the wall surface that is the end of the long side (in this case, the wall surface on the right side of the paper is the virtual wall surface that corresponds to the dashed line) may be found, and the possible arrangement area 22 may be determined from that position to the wall, as in the above-mentioned example.

[0065] Furthermore, the sterilization target space 12 is not limited to a case where the floor surface is rectangular or square, and the floor surface may be circular, polygonal (excluding rectangular and square), or other shapes. Similarly, depending on the shape, the periphery of the wall may be determined as the possible arrangement area 22 so that the range from the side to the rear is narrow. For example, if the floor surface is circular, the range within a certain distance from the center of the circle may be determined as the central area 21, and the area other than the central area 21 may be determined as the possible arrangement area 22. For example, when the radius of the circle on the floor surface is R, this certain distance may be R / 2. The numerical value of the certain distance may be determined, for example, by simulation, analysis, or the like.

[0066] Furthermore, the possible arrangement area 22 may be determined based on the volume and shape of the sterilization target space 12, as well as on device information, which is information on the space sterilization device 1, specifically, for example, the number of blowing directions 30, whether the device is a ceiling-mounted or floor-mounted type, etc. Furthermore, the device information is, for example, at least one of the number of blowing directions 30, information on whether the device is a ceiling-mounted or floor-mounted type, air volume, and blowing concentration. Furthermore, the possible arrangement area 22 may be determined based on a target value of ozone concentration in addition to the above.

[0067] In addition, in the above example, the blowing direction 30 is one direction, but even when the blowing direction 30 is two or more directions, the blowing direction 30 and the possible arrangement area 22 can be determined by simulation, analysis, etc., depending on the volume and shape of the space 12 to be sterilized, so that the ozone gas is efficiently diffused.

[0068] The ozone gas diffusion effect may be improved by installing a circulator in the sterilization target space 12. The circulator may be placed anywhere in the sterilization target space 12, and may be installed in the central region 21, for example.

[0069] As described above, in this embodiment, the arrangement possible area 22, which is the range within which the spatial sterilization device 1 can be arranged, is determined based on the volume and shape of the sterilization target space 12, and the spatial sterilization device 1 is installed within this arrangement possible area 22. This makes it possible to obtain an appropriate sterilization effect even if the sterilization target space 12 is a medium- to large-sized space, and increases the possibility of achieving effective sterilization.

[0070] Embodiment 2 Fig. 26 is a diagram showing an example of the arrangement of the spatial sterilization device 1 of the embodiment 2. The configuration of the spatial sterilization device 1 of the present embodiment and the sterilization target space 12 are similar to those of the embodiment 1. Components having the same functions as those of the embodiment 1 are given the same reference numerals as those of the embodiment 1, and duplicated explanations will be omitted. The following description will focus on the points that are different from the embodiment 1.

[0071] In this embodiment, the arrangement possible area 22 is determined in the same manner as in embodiment 1. As described in embodiment 1, in a medium to large size space, ozone gas is unlikely to diffuse throughout. Considering restrictions such as the weight, power consumption, and handling of the spatial sterilization device 1, it can be assumed that there will be certain limitations with one spatial sterilization device 1 even if the spatial sterilization device 1 is arranged in the manner described in embodiment 1.

[0072] Therefore, in this embodiment, a plurality of spatial sterilization devices 1 are arranged in the arrangement possible area 22 described in the first embodiment. In the example shown in Fig. 26, spatial sterilization devices 1-1 and 1-2, each of which is the spatial sterilization device 1 of the first embodiment, are arranged in the arrangement possible areas 22 on both the left and right sides of the paper. In the example shown in Fig. 26, the spatial sterilization devices 1-1 and 1-2 are both arranged so that the blowing direction 30 is parallel to the long side of the floor surface, and the blowing direction 30 of the spatial sterilization device 1-1 and the blowing direction 30 of the spatial sterilization device 1-2 are opposed to each other.

[0073] FIG. 27 is a diagram showing another example of arrangement of the spatial sterilization device 1 of the present embodiment. In the example shown in FIG. 27, the spatial sterilization devices 1-1 and 1-2 are arranged so that the blowing direction 30 is on the diagonal of a rectangle on the floor surface, and the blowing direction 30 of the spatial sterilization device 1-1 and the blowing direction 30 of the spatial sterilization device 1-2 are opposed to each other. In addition, the spatial sterilization device 1-3 shown by the dashed line in FIG. 27 may be arranged instead of the spatial sterilization device 1-2. The spatial sterilization device 1-3 is also the spatial sterilization device 1 of the first embodiment. In addition, the spatial sterilization device 1-3 may be arranged instead of the spatial sterilization device 1-1. In addition, three spatial sterilization devices 1-1, 1-2, and 1-3 may be arranged. When multiple spatial sterilization devices 1 are arranged in the sterilization target space 12, the spatial sterilization devices 1 may be arranged in each of the arrangement possible areas 22 at both ends of the long side, as shown in this manner, or multiple spatial sterilization devices 1 may be arranged in one of the arrangement possible areas 22. Furthermore, four or more spatial sterilization devices 1 may be arranged within the arrangement possible area 22.

[0074] In the examples shown in Fig. 26 and Fig. 27, the blowing directions 30 of the spatial sterilization devices 1-1, 1-2, and 1-3 all face the central portion as described in embodiment 1. More specifically, in the examples shown in Fig. 26 and Fig. 27, the central portion is a line extending in the height direction from the center 20. As described in embodiment 1, the central portion is not limited to these examples, and may be the central region 21, the range 24 shown in Fig. 15, or other than these.

[0075] As shown in Fig. 26 and Fig. 27, when the blowing direction 30 of the spatial sterilization device 1-1 and the blowing direction 30 of the spatial sterilization device 1-2 are opposed to each other, the airflow formed by the spatial sterilization device 1-1 and the airflow formed by the spatial sterilization device 1-2 collide with each other, and the ozone gas is easily diffused. For this reason, it is more effective to arrange the spatial sterilization devices 1-1 and 1-2 so that the blowing direction 30 of the spatial sterilization device 1-1 and the blowing direction 30 of the spatial sterilization device 1-2 are opposed to each other. When three or more spatial sterilization devices 1 are arranged, it is also effective to arrange at least some of the three or more spatial sterilization devices 1 so that the blowing directions 30 of the spatial sterilization devices 1 are opposed to each other. When a plurality of spatial sterilization devices 1 are arranged, two devices may be arranged to form one pair, and the arrangement may be made so that the blowing directions 30 of the two devices constituting the pair are opposed to each other.

[0076] The number of space sterilization devices 1 to be arranged in the sterilization target space 12 may be optimized as follows. For example, when the volume of the sterilization target space 12 that the space sterilization device 1 can handle is set as a rated value, the number of space sterilization devices 1 to be arranged is calculated using the volume of the sterilization target space 12 and the rated value. This calculation may be performed by the sterilization management device, another device, or manually. For example, the volume of the sterilization target space 12 is divided by the rated value, and if the rated value is divisible, the quotient is set as the number of space sterilization devices 1 to be arranged, and if the rated value is not divisible, the quotient plus 1 is set as the number of space sterilization devices 1 to be arranged. The method of calculating the number of space sterilization devices 1 to be arranged is not limited to this example, and for example, the number of space sterilization devices 1 to be arranged may be set by adding a natural number set to the number calculated by the above calculation with a margin.

[0077] As described in the first embodiment, a circulator may be installed in the sterilization target space 12 to improve the ozone gas diffusion effect. The circulator may be placed anywhere in the sterilization target space 12, and may be installed in the central region 21, for example.

[0078] As described above, in this embodiment, a plurality of spatial sterilization devices 1 are arranged within the arrangement possible area 22. Therefore, ozone gas can be diffused more effectively than in the first embodiment.

[0079] The configurations shown in the above embodiments are merely examples, and may be combined with other known technologies, or the embodiments may be combined with each other. Also, parts of the configurations may be omitted or modified without departing from the spirit of the invention.

[0080] Various aspects of the present disclosure are summarized below as appendices.

[0081] (Appendix 1) An ozone discharging method in an ozone discharging device that discharging ozone by entraining it in an air flow, comprising the steps of: An arrangement step of arranging the ozone release device in an arrangement possible area determined based on the volume and shape of the ozone release target space; a discharging step in which the ozone discharging device disposed in the disposing step discharges ozone into the ozone discharge target space; An ozone releasing method comprising: (Appendix 2) The ozone release method according to claim 1, characterized in that the possible arrangement area is an area within the ozone release target space excluding a central area including the center of the ozone release target space. (Appendix 3) The blowing direction in which the ozone releasing device releases ozone is a direction toward the center, The ozone releasing method according to claim 2, wherein the central portion is a predetermined range including the center of the ozone releasing target space. (Appendix 4) The elevation angle of the blowing direction ranges from 0 degrees to a threshold value, The ozone releasing method according to claim 3, wherein the threshold value is greater than 0 degrees and less than 90 degrees. (Appendix 5) The floor surface of the ozone release target space is rectangular, A is the length of the long side of the floor surface of the ozone release target space, Hb is the height of the outlet of the ozone release device, D is the distance in the long side direction from the rear wall surface of the ozone release device to the outlet, and H is the height of the ozone release target space, then θ, which is the threshold value, is θ=tan -1 {((H-Hb)÷(AD))} The ozone releasing method according to claim 4, wherein the ozone release amount is calculated as follows: (Appendix 6) The ozone releasing method according to any one of claims 1 to 5, characterized in that, when the ozone releasing device is installed in the ozone release target space, the height of the outlet from which the ozone releasing device blows out ozone from the floor surface of the ozone release target space is 75 cm or more. (Appendix 7) The ozone release method according to any one of claims 1 to 6, characterized in that the floor surface of the ozone release target space has a rectangular shape, and the possible arrangement area is, for each of the wall surfaces at both ends of the rectangle, an area from the wall surface to a position where the distance from the wall surface is 1 / 4 of the length of the long side of the rectangle. (Appendix 8) 8. The ozone releasing method according to claim 1, wherein a plurality of the ozone releasing devices are arranged in the arrangement possible area. (Appendix 9) The ozone releasing method according to claim 8, wherein at least some of the ozone releasing devices among the plurality of ozone releasing devices have blowing directions, in which the ozone releasing devices release ozone, that face each other. (Appendix 10) 10. The ozone release method according to any one of claims 1 to 9, wherein a circulator is placed in an area other than the area where the circulator can be placed. (Appendix 11) The volume of the space in which ozone is released is 200 m 3 The ozone releasing method according to any one of claims 1 to 10, characterized in that (Appendix 12) The volume of the space in which ozone is released is 500 m 3 The ozone releasing method according to claim 11, characterized in that: (Appendix 13) The volume of the space subject to ozone release is 750 m 3 The ozone releasing method according to claim 12, characterized in that (Appendix 14) An ozone discharging device for discharging ozone, comprising: An ozone releasing device characterized in that it is placed in an arrangement possible area determined based on the volume and shape of an ozone release target space, which is a medium- to large-sized space, and releases ozone into the ozone release target space. (Appendix 15) An ozone discharging device that discharges ozone, comprising: A room characterized in that the ozone release device is placed in a placement possible area determined based on the volume and shape of an ozone release target space inside the room. (Appendix 16) The room described in Appendix 15, characterized in that the shape of the floor of the ozone release target space is rectangular, and the possible arrangement area is, for each of the wall surfaces at both ends of the rectangle, an area from the wall surface to a position where the distance from the wall surface is 1 / 4 of the length of the long side of the rectangle. [Explanation of symbols]

[0082] 1 spatial sterilization device, 2 housing, 5 ozone generation unit, 6 air blowing unit, 7 control unit, 10 room, 11 partition member, 12 space to be sterilized, 20 center, 21 central area, 22 possible arrangement area, 24 range, 30 blowing direction.

Claims

1. An ozone discharging method in an ozone discharging device that discharging ozone by entraining it in an air flow, comprising the steps of: An arrangement step of arranging the ozone release device in an arrangement possible area determined based on the volume and shape of the ozone release target space; a discharging step in which the ozone discharging device disposed in the disposing step discharges ozone into the ozone discharge target space; An ozone releasing method comprising:

2. 2. The ozone releasing method according to claim 1, wherein the possible arrangement area is an area within the ozone release target space excluding a central area including a center of the ozone release target space.

3. The blowing direction in which the ozone releasing device releases ozone is a direction toward the center, The ozone releasing method according to claim 2 , wherein the central portion is a predetermined range including a center of the ozone releasing target space.

4. the elevation angle of the blowing direction is in the range from 0 degrees to a threshold value; 4. The ozone releasing method according to claim 3, wherein the threshold value is greater than 0 degrees and less than 90 degrees.

5. The floor surface of the ozone release target space is rectangular, A is the length of the long side of the floor surface of the ozone release target space, Hb is the height of the outlet of the ozone release device, D is the distance in the long side direction from the rear wall surface of the ozone release device to the outlet, and H is the height of the ozone release target space, then θ, which is the threshold value, is <h2 style=";text-align:left;direction:ltr">θ=tan<h2 style=";text-align:left;direction:ltr"> －１ <h2 style=";text-align:left;direction:ltr"> {((H-Hb)÷(A-D))} The ozone releasing method according to claim 4, characterized in that the ozone releasing amount is calculated as follows:

6. The ozone releasing method according to claim 5, characterized in that, when the ozone releasing device is installed in the ozone release target space, the height of the outlet from which the ozone releasing device blows out ozone is 75 cm or more from the floor surface of the ozone release target space.

7. The ozone releasing method according to claim 1, characterized in that the shape of the floor surface of the ozone release target space is rectangular, and the possible arrangement area is, for each of the wall surfaces at both ends of the rectangle, an area from the wall surface to a position where the distance from the wall surface is 1 / 4 of the length of the long side of the rectangle.

8. The ozone releasing method according to any one of claims 1 to 7, characterized in that a plurality of the ozone releasing devices are arranged in the arrangement possible area.

9. The ozone releasing method according to claim 8, wherein at least some of the ozone releasing devices among the plurality of ozone releasing devices have blowing directions, which are directions in which the ozone releasing devices release ozone, opposed to each other.

10. 8. The ozone releasing method according to claim 1, further comprising the step of: disposing a circulator in an area other than the area where the circulator can be disposed.

11. The volume of the space into which ozone is released is 200 m ３ The ozone releasing method according to any one of claims 1 to 7, characterized in that

12. The volume of the space to which ozone is released is 500 m ３ The ozone releasing method according to claim 11, characterized in that

13. The volume of the space to which ozone is released is 750 m ３ The ozone releasing method according to claim 12, characterized in that

14. An ozone discharging device for discharging ozone, comprising: An ozone releasing device characterized in that it is placed in an arrangement possible area determined based on the volume and shape of an ozone release target space, which is a medium- to large-sized space, and releases ozone into the ozone release target space.

15. An ozone discharging device that discharges ozone, comprising: A room characterized in that the ozone release device is placed in a placement possible area determined based on the volume and shape of an ozone release target space inside the room.

16. The room described in claim 15, characterized in that the shape of a floor surface of the ozone release target space is rectangular, and the possible arrangement area is, for each of the wall surfaces at both ends of the rectangle, an area from the wall surface to a position where the distance from the wall surface is 1 / 4 of the length of the long side of the rectangle.

Images