Airflow Environment System

Abstract

To provide an air flow environment system that can form an air flow in an open local space in an indoor space, and restrain contaminated air in the local space from diffusing to the outside of the local space.SOLUTION: An air flow environment system 1 comprises: a frame body 2 comprising a grid-like top surface 2a over the head of a user; a first side wall 3 closing a first side surface 2c of the frame body 2; a plurality of nozzles 4 provided in parallel at intervals on the side of the top surface 2a, and extending toward a second side surface 2d from the first side wall 3 along the top surface 2a; a suction port 5 provided on the side of a bottom surface 2b of the frame body 2, and for sucking air in an internal space S1 of the frame body 2; an air cleaning filter 10 for cleaning the air sucked from the suction port 5; first discharge ports 7 provided in respective lower surfaces of the plurality of nozzles 4, and for discharging a portion of the cleaned air toward the bottom surface 2b; and a second discharge port 8 for discharging the rest of the cleaned air toward an external space S2 of the frame body 2.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an airflow environmental system that inhibits air within a space from diffusing to the outside of the space. [Background technology]

[0002] As a conventional airflow environment system, for example, an air conditioning system has been proposed that creates a vertical downward air flow from the top of a relatively large indoor space (for example, an entire room or a particularly limited booth indoors) to prevent the spread of viruses or bacteria and the spread of infection (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Utility Model Registration No. 3226657 Summary of the Invention [Problem to be solved by the invention]

[0004] However, while conventional airflow environment systems are effective in indoor spaces that are physically enclosed by walls or other such structures (closed spaces), when they are applied to open, localized spaces without walls or other such structures, there is an issue that they are unable to adequately suppress the spread of viruses or bacteria and the spread of infection.

[0005] The present invention has been made to solve the above-mentioned problems, and aims to provide an airflow environment system that can form an airflow in an open local space in an indoor space and prevent contaminated air in the local space from diffusing outside the local space. [Means for solving the problem]

[0006] To achieve this object, the present invention One aspect ofThe airflow environment system according to the present invention has a blower, an intake port for sucking in an airflow generated by the blower, a duct for transporting the airflow sucked in from the intake port to a position above the intake port, and a first air outlet for blowing out one side of the airflow transported by the duct to the side of the intake port. A plurality of nozzles having a nozzle hole; a second blowing outlet for blowing the other of the air flows conveyed by the blowing outlet upward from the first blowing outlet; Mouth and This achieves the above-mentioned objectives. Effect of the Invention

[0007] According to the present invention, an airflow environment system can be provided that can form an airflow in an open local space in an indoor space and prevent contaminated air in the local space from diffusing outside the local space. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an external perspective view showing the structure of an airflow environment system according to a first embodiment of the present invention. [Diagram 2] FIG. 2 is a schematic cross-sectional view showing the internal structure of the airflow environment system. [Diagram 3] FIG. 3 is a schematic cross-sectional view showing the airflow in the airflow environment system. [Figure 4] FIG. 4 is a schematic cross-sectional view showing the flow of the air current blown out of the nozzle. [Diagram 5] FIG. 5 is a schematic cross-sectional view showing the airflow in the airflow environment system. [Figure 6] FIG. 6 is an external perspective view showing the structure of an air flow environment system according to a second embodiment of the present invention. [Figure 7] FIG. 7 is a schematic cross-sectional view showing the airflow in the airflow environment system. [Figure 8] FIG. 8 is an external perspective view showing the configuration of an airflow environment system according to the third embodiment of the present invention. [Figure 9] FIG. 9 is a side view showing a schematic configuration of the airflow environment system of FIG. 8 and an airflow generated by the airflow environment system. [Figure 10] FIG. 10 is a side view that illustrates a schematic view of an airflow and a negative pressure region generated in the vicinity of the nozzle in FIG. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The airflow environment system includes a blower, a duct having an intake port for sucking in an airflow generated by the blower and transporting the airflow sucked in from the intake port above the intake port, and a plurality of nozzles having a first outlet for blowing one side of the airflow transported by the duct toward the intake port, and a second outlet for blowing the other side of the airflow transported by the duct above the first outlet.

[0010] With this configuration, the air sucked in from the air inlet is blown out from the second air outlet to the external space, so that the internal space has a negative pressure relative to the surrounding external space, and aerosols such as viruses floating in the air in the internal space can be prevented from diffusing outside the internal space (external space). In other words, an airflow environment system can be provided that forms an airflow in an open local space (internal space) in an indoor space and prevents contaminated air in the local space from diffusing outside the local space.

[0011] The airflow environment system 1 is installed such that adjacent nozzles have the first air outlets on the same surface.

[0012] With this configuration, the airflow generated by the multiple nozzles can be a surface airflow made up of an outlet airflow caused by the air blown out from the first air outlet, and an induced airflow induced by this outlet airflow.

[0013] The airflow environment system further includes a frame having a top surface, a first side surface, a second side surface, a third side surface, and a fourth side surface, and a first side wall closing the first side surface. The nozzles extend from the first side surface to the second side surface. The duct is formed in the first side wall.

[0014] With this configuration, an airflow environment system can be created that can form an airflow in an open local space (internal space) in an indoor space and prevent contaminated air in the local space from diffusing outside the local space.

[0015] In the airflow environment system, the second air outlet is provided on a surface of the nozzle opposite to a surface on which the first air outlet is provided.

[0016] With this configuration, the air blown out from the second outlet is blown out toward the upper side of the multiple nozzles so as to be attracted by the airflow blown out from the first outlet. This is expected to have the effect of easily generating a surface airflow by the airflow blown out from the first outlet by using the airflow blown out from the second outlet as an induced airflow and reducing the negative pressure area.

[0017] In the airflow environment system, the nozzles are divided into a first nozzle group located at the center and a second nozzle group located outside the first nozzle group. The blowing speed of air blown out from the first outlet of the second nozzle group is faster than the blowing speed of air blown out from the first outlet of the first nozzle group.

[0018] With this configuration, the airflow caused by the air blown out from the first outlet of the second nozzle group functions as an air curtain airflow for the air blown out from the first outlet of the first nozzle group, so that the air blown out from the first outlet of the first nozzle group and reaching the bottom side is easily sucked in from the suction port. Also, the internal space of the frame body has a negative pressure relative to the surrounding external space, so that the air blown out from the first outlet of the second nozzle group is attracted and flows into the internal space of the frame body, so that the air in the internal space of the frame body can be prevented from diffusing into the external space.

[0019] The airflow environment system further includes a second sidewall closing the third side surface. The nozzles are divided into a first nozzle group located at a center side and a second nozzle group located outside the first nozzle group. A blowing speed of air blown out from a first outlet of the second nozzle group located on the fourth side surface side is greater than a blowing speed of air blown out from a first outlet of the first nozzle group and a blowing speed of air blown out from a first outlet of the second nozzle group located on the second sidewall side.

[0020] As a result, the airflow caused by the air blown out from the first outlet of the second nozzle group located on the third side surface side not provided with the second side wall functions as an air curtain airflow for the air blown out from the first outlet of the first nozzle group, and the air blown out from the first outlet of the first nozzle group and reaching the bottom surface side is easily sucked in from the suction port. Also, since the internal space of the frame body has a negative pressure compared to the surrounding external space, the air blown out from the first outlet of the second nozzle group located on the fourth side surface is also attracted and flows into the internal space of the frame body, so that the air in the internal space of the frame body can be prevented from diffusing into the external space.

[0021] The airflow environment system further includes an air purification filter that purifies the air drawn in through the air inlet.

[0022] This allows the air purified by the air purification filter to be attracted by the outlet airflow from the first outlet and introduced into the internal space, which is expected to have the effect of increasing the cleanliness (infection prevention effect) of the internal space of the frame body.

[0023] Hereinafter, an embodiment of the present invention will be described with reference to the drawings. Note that the following embodiment is an example of the present invention, and does not limit the technical scope of the present invention. Also, each figure described in the embodiment is a schematic diagram, and the size and thickness ratios of each component in each figure do not necessarily reflect the actual dimensional ratios.

[0024] (Embodiment 1) First, an airflow environment system 1 according to a first embodiment of the present invention will be described with reference to Fig. 1 and Fig. 2. Fig. 1 is an external perspective view of the airflow environment system 1 according to the first embodiment of the present invention. Fig. 2 is a schematic cross-sectional view showing the internal structure of the airflow environment system 1.

[0025] The airflow environment system 1 is a system that zones an open local space in an indoor space, forms a downflow air current (descending air current) in the local space, and prevents polluted air in the local space from diffusing to the outside of the local space. The airflow environment system 1 is preferably installed in a waiting area in a hospital, for example, but may also be installed as a place for small-group communication such as a meeting space in an office or a rest area.

[0026] 1, the airflow environment system 1 includes a frame 2 having a lattice-shaped top surface 2a, a first side wall 3, a plurality of nozzles 4, an inlet 5, a blower 6, a first outlet 7, and a second outlet 8. As shown in FIG. 2, the blower 6 includes an air purifying filter 10 and a blower 11.

[0027] The frame 2 is a rectangular parallelepiped framework structure that surrounds the target space, and is composed of, for example, four pillars and four beams (horizontal members) that connect the upper ends of the pillars. Here, the space surrounded by the frame 2 is referred to as the "internal space S1," and the space outside the frame 2 having the lattice-shaped top surface 2a is referred to as the "external space S2." Here, the frame 2 defines the top surface 2a, bottom surface 2b, and four side surfaces (first side surface 2c, second side surface 2d, third side surface 2e, and fourth side surface 2f) when the airflow environment system 1 is installed on the floor surface of the indoor space.

[0028] The top surface 2a is located at a predetermined height above the user's head. A plurality of nozzles 4 are arranged along the top surface 2a.

[0029] The bottom surface 2b corresponds to the surface under the feet of the user, and can also be said to be the floor surface of the indoor space or the floor surface of the internal space S1.

[0030] The first side surface 2c is one of the four side surfaces of the frame body 2, and is closed by the first side wall 3. The first side surface 2c is disposed in the frame body 2 so as to face the second side surface 2d.

[0031] The second side surface 2d is a side surface located opposite the first side surface 2c, and is in an open (open) state without a side wall. The second side surface 2d is disposed in the frame 2 opposite the first side surface 2c.

[0032] The third side surface 2e is a side surface that connects the first side surface 2c and the second side surface 2d, and is in an open (open) state without a side wall. The third side surface 2e is disposed in the frame 2 so as to face the fourth side surface 2f.

[0033] The fourth side surface 2f is a side surface that connects the first side surface 2c and the second side surface 2d, and is in an open (open) state without a side wall. The fourth side surface 2f is disposed in the frame 2 so as to face the third side surface 2e.

[0034] The first side wall 3 is a side wall that closes the entire first side surface 2c. A blower 6 is installed on the bottom surface 2b of the first side wall 3 on the side of the internal space S1. As shown in FIG. 2, the first side wall 3 is a hollow wall, and a duct 12 is formed inside through which air blown from the blower 6 flows. A branching portion 13 is formed at the upper end of the duct 12 on the top surface 2a side of the first side wall 3. A plurality of nozzles 4 extending from the first side wall 3 along the top surface 2a toward the second side surface 2d of the frame 2 are connected to the first side wall 3 on the sides of the branching portion 13. Furthermore, a second air outlet 8 is formed above the branching portion 13 in the first side wall 3, which blows air toward the external space S2.

[0035] The multiple nozzles 4 are members that generate a surface airflow (an airflow that is linear in the blowing direction as a whole) as a downward airflow from the top surface 2a side toward the bottom surface 2b.

[0036] As shown in FIG. 1, the nozzles 4 are arranged side by side on the top surface 2a side with a predetermined interval (gap) therebetween, and are formed extending from the first side wall 3 toward the second side surface 2d of the frame body 2 along the top surface 2a. The nozzles 4 all have the same length in the extending direction. Each of the nozzles 4 has a vertical cross section in the extending direction that is long vertically, and has a first outlet 7 on the lower surface side in the air blowing direction. More specifically, each of the nozzles 4 has a hollow structure through which air can flow, as shown in FIG. 2, and the first outlet 7 is formed on the lower surface. The nozzles 4 are installed so that the lower surfaces on which the first outlet 7 is provided are flush with each other.

[0037] 1, the nozzles 4 include a first nozzle group 4a located at the center and a second nozzle group 4b located outside the first nozzle group 4a. In this embodiment, the first nozzle group 4a is composed of four nozzles 4, and each of the second nozzle groups 4b is composed of two nozzles 4. Note that in the embodiment of the present invention, the nozzle 4 may be read as nozzle 4, the first nozzle group 4a as first nozzle group 4a, and the second nozzle group 4b as second nozzle group 4b.

[0038] The suction port 5 is an opening for drawing air from the internal space S1 of the frame 2 into the inside of the blower unit 6. The suction port 5 is disposed on the bottom surface 2b side of the front surface (the surface facing the second side surface 2d) of the blower unit 6, and draws in air from the internal space S1 (particularly air blown out from the first blowing ports 7 of the multiple nozzles 4 and reaching the bottom surface 2b side). The suction port 5 is formed across the entire width of the first side surface 2c.

[0039] The blower unit 6 is a unit that purifies the air taken in, turns it into pressurized air, and generates an air current that is blown out toward the internal space S1 and the external space S2.

[0040] Specifically, the blower unit 6 includes an air cleaning filter 10 and a blower 11, as shown in FIG.

[0041] The air purifying filter 10 is a member that uses a known sterilization filter, dust collection filter, or deodorizing filter such as activated carbon to convert the air taken in into purified air from viruses, bacteria, dust, pollen, allergens, etc. By purifying the air with the air purifying filter 10, the cleanliness of the air blown out of the airflow environment system 1 can be increased.

[0042] The blower 11 is a centrifugal fan located downstream of the air purification filter 10. A motor (not shown) for rotating the blower 11 is connected to the blower 11, and by rotating the motor, the blower 11 rotates to generate an air flow.

[0043] As shown in Fig. 1, the first air outlet 7 is an opening formed on the bottom surface of each of the multiple nozzles 4. The first air outlet 7 communicates with the branching section 13 via the nozzle 4, and blows out air (a part of the purified air) from the blower section 6 toward the bottom surface 2b. Note that, as shown in Fig. 2, a plurality of first air outlets 7 are formed at predetermined intervals so that air can be blown out from the entire length of the nozzle 4 from the first side surface 2c side to the second side surface 2d side.

[0044] 1, the first outlet 7 has a first outlet 7a corresponding to the first nozzle group 4a located at the center, and a first outlet 7b corresponding to the second nozzle group 4b located on the outer side of the first nozzle group 4a. Although details will be described later, the blowing speed of the air blown out from the first outlet 7b of the second nozzle group 4b is controlled to be faster than the blowing speed of the air blown out from the first outlet 7a of the first nozzle group 4a.

[0045] The second air outlet 8 is an opening formed on the upper surface of the first side wall 3 on the top surface 2a side of the frame body 2. The second air outlet 8 communicates with the branching portion 13, and blows out air (the remaining purified air) from the blowing portion 6 toward the external space S2. In particular, in this embodiment, the second air outlet 8 is configured to blow out toward the external space S2 above the multiple nozzles 4 by an air direction changing plate. In this way, the purified air blown out from the second air outlet 8 (see the blown airflow 24 shown in FIG. 3) is introduced into the internal space S1 as an induced airflow 22 (see FIG. 4) caused by the multiple nozzles 4 described later. The second air outlet 8 is formed across the entire width of the first side wall 3.

[0046] Duct 12 is provided inside first side wall 3, and connects blower section 6 and branch section 13. Duct 12 distributes the air blown from blower section 6 and guides it to branch section 13. Duct 12 can also be said to be a passage through which the air blown from blower section 6 flows.

[0047] The branching section 13 is a member formed at the upper end of the duct 12 on the top surface 2a side of the first side wall 3. The branching section 13 branches and distributes the air (purified air) blown from the blowing section 6 to the first outlet 7 side (the multiple nozzles 4 side) and the second outlet 8 side. As a result, a part of the purified air is introduced to the first outlet 7 side, and the remaining purified air is introduced to the second outlet 8 side. Here, the branching section 13 is configured to distribute 80% of the total purified air as part of the first outlet 7 side (the multiple nozzles 4 side) and distribute 20% of the total purified air as the remaining purified air to the second outlet 8 side.

[0048] As described above, the airflow environment system 1 is made up of each member.

[0049] Next, the airflow in the airflow environment system 1 will be described with reference to Figs. 3 to 5. Fig. 3 is a schematic cross-sectional view showing the airflow in the airflow environment system 1. Fig. 4 is a schematic cross-sectional view showing the airflow blown out from the nozzle 4. Fig. 5 is a schematic cross-sectional view showing the airflow in the airflow environment system 1. Fig. 5 is a vertical cross-section in the extension direction of the nozzle 4. In Fig. 5, the length of the arrows showing each airflow indicates the magnitude of the blowing speed of the air.

[0050] In the airflow environment system 1, as shown in Fig. 3, when the blower 6 (blower 11) starts blowing air, air (dirty air, etc.) in the internal space S1 sucked in from the air inlet 5 passes through the air purification filter 10 and is purified, and the purified air flows through the duct 12 as an airflow 20. The airflow 20 introduced into the branching section 13 is then divided by the branching section 13 into an airflow 23 blown out from the first air outlet 7 (more precisely, the blown airflow 21 shown in Fig. 4) and an airflow 24 blown out from the second air outlet 8. That is, in the airflow environment system 1, the air sucked in from the air inlet 5 is purified and blown out from the first air outlet 7 as the airflow 23 into the internal space S1 and from the second air outlet 8 as the blown airflow 24.

[0051] As described above, the nozzles 4 are arranged side by side on the top surface 2a side with a predetermined interval (gap). Therefore, in the nozzles 4, as shown in Fig. 4, a negative pressure region S3 is generated in the gap between adjacent nozzles 4 by the blown airflow 21 blown out from the first blowing outlet 7, and air in the external space S2 is attracted to this negative pressure region S3 and introduced into the internal space S1 as an induced airflow 22. Then, the blown airflow 21 blown out from the first blowing outlet 7 and the induced airflow 22 are combined to become an airflow 23. Note that the airflow 23 is also described here as an airflow blown out from the first blowing outlet 7.

[0052] More specifically, as shown in FIG. 5, in the first nozzle group 4a, the air in the external space S2 is attracted to the gap between the adjacent nozzles 4 by the blown airflow 21a blown out from each nozzle 4 of the first nozzle group 4a, generating an induced airflow 22a, which joins together to become an airflow 23a. In the first nozzle group 4a, the airflow 23a is blown from a plurality of adjacent locations, resulting in a planar airflow as a whole. On the other hand, in the second nozzle group 4b, the blown airflow 21b blown out from each nozzle 4 of the second nozzle group 4b attracts the air in the external space S2 to the gap between the adjacent nozzles 4, generating an induced airflow 22b, which joins together to become an airflow 23b. In the second nozzle group 4b, when the airflow 23b is blown from a plurality of adjacent locations, the airflow becomes a planar airflow as a whole.

[0053] In the airflow environment system 1, the blowing speed of the air blown out from the second nozzle group 4b (blowout airflow 21b) is controlled to be higher than the blowing speed of the air blown out from the first air outlet 7a of the first nozzle group 4a (blowout airflow 21a). As a result, the airflow 23b formed by the air blown out from the second nozzle group 4b functions as an air curtain airflow for the airflow 23a formed by the air blown out from the first nozzle group 4a, and the airflow 23a is prevented from diffusing into the external space S2.

[0054] 4, in the airflow environment system 1, a portion of the sucked air (20% of the total) is blown out from the second outlet 8 to the external space S2 relative to the amount of air sucked into the internal space S1 from the suction port 5, so the amount of air (airflow 23) blown out from the first outlet 7 to the internal space S1 is small. In other words, in the airflow environment system 1, the amount of air sucked in from the suction port 5 is greater than the amount of air blown out from the first outlet 7 during the blowing operation of the blower 6, so the internal space S1 (especially the area near the suction port 5) is always in a negative pressure state (negative pressure), which attracts the surrounding air. This makes it easier to suck in the air (airflows 23a, 23b) that has descended through the internal space S1 of the frame 2 from the suction port 5.

[0055] The airflow is formed as described above in the airflow environment system 1. In the airflow environment system 1, the open internal space S1 is zoned, and a downward air current is formed in the internal space S1 while preventing the polluted air in the internal space S1 from diffusing into the external space S2.

[0056] As described above, according to the airflow environment system 1 according to the first embodiment, the following effects can be obtained.

[0057] (Overview and Effects of One Aspect of the Airflow Environment System 1) (1) Airflow environment system 1 includes a blower 11, a duct 12 having an intake port 5 for sucking in an airflow generated by blower 11 and transporting the airflow sucked in from intake port 5 above intake port 5, and a plurality of nozzles 4 having a first outlet 7 for blowing one side of the airflow transported by duct 12 toward intake port 5, and a second outlet 8 for blowing the other side of the airflow transported by duct 12 above the first outlet 7.

[0058] With this configuration, the airflow 23 flows down from the top surface 2a of the frame body 2, so that aerosols such as viruses floating in the air of the internal space S1 of the frame body 2 can be lowered and removed from the breathing area of ​​the user. Then, the airflow 23 that has descended through the internal space S1 of the frame body 2 is sucked in through the inlet 5, and one of the air sucked in through the inlet 5 (blowout airflow 21) is blown out from the first blowout port 7 into the internal space S1 of the frame body 2. In addition, the other of the air sucked in through the inlet 5 (blowout airflow 24) is blown out from the second blowout port 8 into the external space S2 of the frame body 2, so that the internal space S1 of the frame body 2 has a negative pressure relative to the external space S2 around it, and aerosols such as viruses floating in the air of the internal space S1 of the frame body 2 can be prevented from diffusing outside the internal space S1 (external space S2). In other words, an airflow environment system 1 can be created in an indoor space that can form an airflow 23 in an open local space (internal space S1) and prevent contaminated air in the local space from diffusing outside the local space.

[0059] (2) The airflow environment system 1 is installed such that the surfaces of adjacent nozzles 4 on which the first air outlets 7 are provided are flush with each other.

[0060] With this configuration, the airflow 23 generated by the multiple nozzles 4 can be made into a surface airflow consisting of the blown airflow 21 caused by the air blown out from the first air outlet 7 and the induced airflow 22 induced by the blown airflow 21. Therefore, the air blown out from the first air outlet 7 can be made to flow down from the top surface 2a of the frame 2 efficiently.

[0061] (3) The airflow environment system 1 further includes a frame 2 having a top surface 2a, a first side surface 2c, a second side surface 2d, a third side surface 2e, and a fourth side surface 2f, and a first side wall 3 closing the first side surface 2c. The nozzles 4 extend from the first side surface 2c toward the second side surface 2d. The duct 12 is formed in the first side wall 3.

[0062] With this configuration, we can expect the same effects as outlined in (1).

[0063] (4) In the airflow environment system 1, the second outlet 8 is provided on a surface of the nozzle 4 that faces a surface on which the first outlet 7 is provided.

[0064] With this configuration, the air blown out from the second air outlet 8 (airflow 24) is blown out toward above the multiple nozzles 4 so as to be attracted by the airflow 21 blown out from the first air outlet 7. This makes it possible to use the airflow 24 blown out from the second air outlet 8 as an induced airflow, thereby reducing the negative pressure region S3, and is expected to have the effect of easily generating a surface airflow by the airflow 21 blown out from the first air outlet 7.

[0065] (5) In the airflow environment system 1, the multiple nozzles 4 are divided into a first nozzle group 4a located in the center and a second nozzle group 4b located outside the first nozzle group 4a. The blowing speed of the air (blowout airflow 21b) blown out from the first blowing outlet 7b of the second nozzle group 4b is faster than the blowing speed of the air (blowout airflow 21a) blown out from the first blowing outlet 7a of the first nozzle group 4a.

[0066] With this configuration, the airflow 23b caused by the air blown out from the first outlet 7b of the second nozzle group 4b functions as an air curtain airflow for the air (airflow 23a) blown out from the first outlet 7a of the first nozzle group 4a, so that the air (airflow 23a) blown out from the first outlet 7a of the first nozzle group 4a and reaching the bottom surface 2b side is easily sucked in from the suction port 5. In addition, the internal space S1 of the frame body 2 has a negative pressure compared to the surrounding external space S2, so that the air (airflow 23b) blown out from the first outlet 7b of the second nozzle group 4b is also attracted to and flows into the internal space S1 of the frame body 2, so that the air in the internal space S1 of the frame body 2 (particularly the air (airflow 23a) blown out from the first outlet 7a of the first nozzle group 4a) can be suppressed from diffusing into the external space S2.

[0067] (Embodiment 2) Next, an airflow environment system 1a according to a second embodiment of the present invention will be described with reference to Fig. 6 and Fig. 7. Fig. 6 is an external perspective view showing the structure of the airflow environment system 1a according to the second embodiment of the present invention. Fig. 7 is a schematic cross-sectional view showing the airflow in the airflow environment system 1a. Note that Fig. 7 is a vertical cross-section in the extension direction of the nozzle 4. In Fig. 7, the length of each arrow showing the airflow indicates the magnitude of the air blowing speed.

[0068] The airflow environment system 1a according to the second embodiment of the present invention includes a second side wall 3a on the third side surface 2e of the frame body 2. The airflow environment system 1a differs from the first embodiment in that the blowing speed of the air blown out from the second nozzle group 4b located on the fourth side surface 2f side is faster than the blowing speed of the air blown out from the second nozzle group 4b located on the first nozzle group 4a and second side wall 3a sides. The rest of the configuration of the airflow environment system 1a is the same as that of the airflow environment system 1 according to the first embodiment. Below, the contents already explained in the first embodiment will not be explained again as appropriate, and the differences from the first embodiment will be mainly explained.

[0069] The airflow environment system 1a is preferably installed in, for example, a meeting space in an office. For this reason, in the airflow environment system 1a, a table and chair set 30 is installed in the center of the internal space S1, and a display 31 is attached to the first side wall 3, as shown in FIG.

[0070] In the airflow environment system 1a, a second side wall 3a is provided on the third side surface 2e of the frame body 2. The second side wall 3a closes the third side surface 2e. Note that the second side surface 2d and the fourth side surface 2f are in an open (open) state.

[0071] 7, in the first nozzle group 4a, the air in the external space S2 is attracted into the gap between adjacent nozzles 4 by the blown airflow 21a blown out from each nozzle 4 of the first nozzle group 4a, generating an induced airflow 22a, which then join together to become an airflow 23a. Meanwhile, in the second nozzle group 4b, the air in the external space S2 is attracted into the gap between adjacent nozzles 4 by the blown airflow 21b blown out from each nozzle 4 of the second nozzle group 4b, generating an induced airflow 22b, which then join together to become an airflow 23b.

[0072] The airflow environment system 1a controls the speed of the air (exhaust airflow 21b) blown out from the fourth side surface 2f of the second nozzle group 4b to be faster than the speed of the air (exhaust airflow 21a) blown out from the first air outlet 7a of the first nozzle group 4a. This allows the airflow 23b formed by the air blown out from the second nozzle group 4b on the fourth side surface 2f side to function as an air curtain airflow for the airflow 23a formed by the air blown out from the first nozzle group 4a, and prevents the airflow 23a from diffusing into the external space S2.

[0073] On the other hand, the airflow environment system 1a controls the blowing speed of the air (blowout airflow 21b) blown out from the second nozzle group 4b on the second side wall 3a side of the second nozzle group 4b to be the same as the blowing speed of the air (blowout airflow 21a) blown out from the first air outlet 7a of the first nozzle group 4a. This is because the second side wall 3a physically prevents the air in the internal space S1 from diffusing into the external space S2 from the second side wall 3a side of the second nozzle group 4b.

[0074] Furthermore, in the airflow environment system 1a, as in the airflow environment system 1, a portion of the sucked air (20% of the total) is blown out from the second blowing outlet 8 to the external space S2 relative to the amount of air sucked in from the air inlet 5 in the internal space S1, so the amount of air blown out from the first blowing outlet 7 (airflow 23) is small. In other words, in the airflow environment system 1a, the "amount of air sucked in from the air inlet 5 > the amount of air blown out from the first blowing outlet 7" during the blowing operation of the blowing unit 6, so the internal space S1 (particularly the area near the air inlet 5) is in a negative pressure state (negative pressure), which attracts the surrounding air. This makes it easier to suck in the air (airflows 23a, 23b) that has descended in the internal space S1 of the frame body 2 from the air inlet 5.

[0075] In the airflow environment system 1a, the airflow is formed as described above.

[0076] As described above, according to the airflow environment system 1a of the second embodiment, in addition to the advantages described in the overview (1) to (3) of the airflow environment system 1 of the first embodiment, the following advantages can be obtained.

[0077] (Overview and Effects of One Aspect of the Airflow Environment System 1a) (6) The airflow environment system 1a further includes a second side wall 3a closing the third side surface 2e. The nozzles 4 are divided into a first nozzle group 4a located in the center and a second nozzle group 4b located outside the first nozzle group 4a. The blowing speed of the air blown out from the first blowing outlet 7b of the second nozzle group 4b located on the fourth side surface 2f side is faster than the blowing speed of the air blown out from the first blowing outlet 7a of the first nozzle group 4a and the first blowing outlet 7b of the second nozzle group 4b located on the second side wall 3a side.

[0078] As a result, the outlet airflow 21b of the air blown out from the first outlet 7b of the second nozzle group 4b located on the third side surface 2e side not provided with the second side wall 3a functions as an air curtain airflow for the air blown out from the first outlet 7a of the first nozzle group 4a, and the air blown out from the first outlet 7a of the first nozzle group 4a and reaching the bottom surface 2b side is easily sucked in from the suction port 5. In addition, the internal space S1 of the frame body 2 has a negative pressure relative to the surrounding external space S2, and the air blown out from the first outlet 7b of the second nozzle group 4b located on the fourth side surface 2f side (outlet airflow 21b) is also attracted and flows into the internal space S1 of the frame body 2, so that the air in the internal space S1 of the frame body 2 can be prevented from diffusing into the external space S2.

[0079] (7) The airflow environment system 1 a further includes an air purification filter 10 that purifies the air drawn in through the air inlet 5 .

[0080] As a result, the air purified by the air purifying filter 10 is attracted to the outlet airflow 21 blown out from the first air outlet 7 and introduced into the internal space S1, which is expected to have the effect of improving the cleanliness (infection prevention effect) of the internal space S1 of the frame body 2. The air purifying filter 10 may be provided in the airflow environment system 1 of the first embodiment, and similar effects can be expected.

[0081] (Embodiment 3) Next, an airflow environment system 1c according to a third embodiment of the present invention will be described.

[0082] (Configuration of Airflow Environment System 1c) The configuration of the airflow environment system 1c will be described with reference to Figures 8 and 9. Figure 8 is an external perspective view showing the configuration of the airflow environment system 1c. Figure 9 is a side view showing the configuration of the airflow environment system 1c and a schematic view of the airflow generated by the airflow environment system 1c.

[0083] The airflow environment system 1c is a type of air blower that is installed on a floor surface FL of an indoor space such as a hospital waiting room or an office space, and generates an airflow that circulates through the airflow environment system 1c. The airflow environment system 1c includes a blower 11, a duct 12, a nozzle 4, and a frame 140.

[0084] The blower 11 generates an airflow 20 passing through the duct 12. The blower 11 may be a known turbomachine such as a centrifugal blower.

[0085] Duct 12 has an inlet 5 for sucking in airflow 20 generated by blower 11, and is an air transport path for transporting airflow 20 sucked in from inlet 5 above inlet 5. Duct 12 is a rectangular frame standing approximately vertically with its base end on the floor surface FL side. Duct 12 has inlet 5 provided on the base end side of duct 12. Duct 12 contains blower 11 inside.

[0086] The suction port 5 is provided on the base end side of the duct 12, near the floor surface FL. In the present invention, the vicinity of the floor surface FL refers to the floor surface FL side of the head of the user of the airflow environment system 1c, preferably the feet. In the present invention, the opening shape of the suction port 5 is shown as a square shape as an example, but is not limited to this as long as a predetermined amount of air is sucked in from the suction port 5. For example, when the opening of the suction port 5 is square, the corners may be rounded. The opening of the suction port 5 may be elliptical. The suction port 5 may be formed to include at least one of a circular opening and a square opening.

[0087] The nozzle 4 is an air transport passage having an outlet for blowing out the airflow 20 transported from the duct in a predetermined direction. The nozzle 4 is formed in a nozzle shape, standing approximately parallel to the floor surface FL with the tip side of the duct 12 as its base end. The base end of the nozzle 4 communicates with the tip side of the duct 12. The nozzle 4 has a first outlet 7 and a second outlet 8. A plurality of nozzles 4 are provided in parallel. In the third embodiment, eight nozzles 4 are illustrated as being arranged in parallel, but this is not limited thereto, and two or more nozzles may be arranged.

[0088] The first air outlet 7 is an opening for blowing one of the air flows 20 conveyed by the duct 12 toward the inlet 5 side, i.e., toward the floor surface FL, as an outlet air flow 21. The first air outlet 7 is formed in a rectangular shape. The first air outlet 7 is provided in the nozzle 4 facing the floor surface FL. In addition, in the multiple nozzles 4, adjacent first air outlets 7 are preferably arranged so that they are at approximately the same height from the floor surface FL. In other words, in the multiple nozzles 4, adjacent first air outlets 7 are preferably arranged on approximately the same plane.

[0089] The second air outlet 8 is an opening for blowing out the other of the airflows 20 conveyed by the duct 12 upward from the first air outlet 7 as an outlet airflow 24. The second air outlet 8 is formed in a square or circular shape. The second air outlet 8 is provided on the surface of the nozzle 4 opposite to the surface on which the first air outlet 7 is provided.

[0090] The frame 140 is a framework structure for holding the nozzle 4 at a predetermined height from the floor surface FL. The frame 140 has two support columns standing from the floor surface FL side and four beams (horizontal members) connecting the upper ends of the two support columns. The frame 140 differs from the frame 2 of the first and second embodiments in that the number of support columns standing from the floor surface FL side is two, but is common in other respects. The frame 140 has a nozzle 4 on the top surface 2a. The top surface 2a and the nozzle 4 may be connected via screws or adhesive, or may be fitted to each other by providing a fitting portion using a known fitting technique. The frame 140 may be supported on a ceiling surface (not shown) via a known hanging bolt or wire.

[0091] The above is the configuration of the airflow environment system 1c.

[0092] (Features of Airflow Environment System 1c) The features of the airflow environment system 1c will be described with reference to Fig. 10. Fig. 10 is a side view showing a schematic view of the airflow and negative pressure region generated in the vicinity of the nozzle 4.

[0093] When the blower 11 starts operating, air in the indoor space in which the airflow environment system 1c is installed becomes airflow 20 and is sucked in through the air inlet 5. The air (airflow 20) sucked in through the air inlet 5 passes through the duct 12 and is transported to the nozzle 4. The air (airflow 20) transported to the nozzle 4 is divided into air (airflow 21) blown out from the first air outlet 7 and air (airflow 24) blown out from the second air outlet 8.

[0094] When the airflow 21 is blown out from the air outlet 131, the air in the space around the airflow 21 is attracted to the airflow 21, and a negative pressure region S3 is generated in the space between the adjacent nozzles 4. When the negative pressure region S3 is generated, a force that tries to eliminate the negative pressure (negative pressure) acts, and air (induced airflow 22) for eliminating the negative pressure region S3 is generated from the space around the airflow environment system 1c. The induced airflow 22 suppresses the force that attracts the adjacent airflows 21 to the negative pressure region S3 and merges with each other. Therefore, the airflow environment system 1c can easily generate an airflow in which the merging of the adjacent airflows 21 is suppressed, that is, an airflow 23 that is linear in the blowing direction as a whole (in the present application, this airflow may be referred to as a "planar airflow" or "planar airflow"). By making the airflow 21 a planar airflow (airflow 23), the occurrence of non-uniformity (variation) in the speed distribution of the airflow 21 in the area parallel to the floor surface FL is suppressed. For this reason, for example, the airflow environment system 1c is expected to have the effect of providing the same airflow 21 to the user of the airflow environment system 1c regardless of the position of the user. The induced airflow 22 may include air from the blown airflow .

[0095] The airflow 21 moves toward the floor surface FL and is sucked into the air inlet 5 again. Here, if the air volume of the airflow 20 is Q1, the air volume of the blown airflow 21 is Q2, and the air volume of the blown airflow 24 is Q3, then Q1=Q2+Q3. That is, the magnitude relationship between Q1 and Q2 is Q1>Q2. Assuming an internal space S1 in which an air flow is generated by the blown airflow 21, the internal space S1 has a negative pressure (negative pressure) relative to the surrounding space (external space S2), so that the air in the internal space S1 is prevented from spreading to the surrounding space (external space S2) of the internal space S1. For this reason, for example, if the air in the internal space S1 contains a pathogen such as a virus, the airflow environment system 1c can be expected to have an effect of preventing the pathogen from spreading (diffusing) to the surroundings of the internal space S1 (external space S2), that is, an effect of infection control (infection prevention). It is preferable that Q2 has an air volume of about 80% of Q1, and Q3 has an air volume of about 20% of Q1. Adjustment of air volume Q2 of outlet airflow 21 and air volume Q3 of outlet airflow 24 may be achieved by adjusting the opening area of ​​first outlet 7 and the opening area of ​​second outlet 8, or may employ an air volume adjustment damper according to known technology.

[0096] Furthermore, by locating the intake port 5 near the floor surface FL, it becomes easy to generate the flow of the blown air current 21 from the nozzle 4 toward the floor surface FL, that is, the descending air current (also called downflow). For this reason, for example, if the air in the internal space S1 contains a pathogen such as a virus, the airflow environment system 1c shortens the time that the pathogen remains around the head of the user of the airflow environment system 1c. In other words, the airflow environment system 1c is expected to have the effect of suppressing the possibility of pathogens entering the body through the user's eyes, nose, mouth, etc., that is, the effect of infection control (infection prevention).

[0097] [Variations] Below, a description will be given of a modified example of embodiment 3. In the description of the modified example, the same or equivalent components and members as those of embodiment 3 will be given the same reference numerals. Descriptions that overlap with the embodiment will be omitted as appropriate, and the description will focus on the configurations that differ from the examples.

[0098] The airflow environment system 1c may further include a filter that collects dust contained in the air drawn in through the air inlet 5. The filter may be one based on known technology.

[0099] The airflow environment system 1c may further include a functional gas generator that adds a functional gas to the air drawn in from the air inlet 5. The functional gas is a gas that contains components that perform sterilization, deodorization, and fragrance blending.

[0100] The second air outlet 8 is configured to be provided in the nozzle 4, but is not limited thereto. For example, it may be configured to be provided on the upright tip side of the duct 12. When the second air outlet 8 is provided in the duct 12, the second air outlet 8 may be configured to blow out the blown airflow 24 between adjacent nozzles 4 (negative pressure region S3). This allows the blown airflow 24 to be efficiently transported to the negative pressure region S3, so that it is expected that the negative pressure region S3 can be reduced and a surface airflow (airflow 23) can be easily generated by the blown airflow 21.

[0101] The airflow environment system 1c may further include an airflow direction adjustment plate for controlling the blowing direction of the blown airflow 21. This makes it possible to precisely control the blowing direction of the blown airflow 21, and is expected to have the effect of easily generating a surface airflow (airflow 23) by the blown airflow 21.

[0102] Although the frame 140 has been described as having two support pillars, the present invention is not limited to this. For example, the frame 140 may be supported on a ceiling surface (not shown) via a known hanging bolt or wire instead of the support pillars.

[0103] The present invention has been described above based on the embodiments. These embodiments are merely examples, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component or each treatment process, and that such modifications are also within the scope of the present invention.

[0104] In the airflow environment system 1 according to the first embodiment, the air (airflow 24) blown out from the second air outlet 8 is blown out toward the upper side of the nozzles 4 so as to be attracted by the airflow 21 blown out from the first air outlet 7, but the present invention is not limited to this. For example, the airflow may be configured to be blown out into the external space S2 on the side of the airflow environment system 1. In this case, although the above-mentioned effect (3) cannot be obtained, the internal space S1 (particularly the area near the air inlet 5) can be made to be in a negative pressure state (negative pressure) during the blowing operation of the blower 6, so that the air (airflows 23a, 23b) descending through the internal space S1 of the frame 2 can be easily sucked in through the air inlet 5. [Industrial Applicability]

[0105] The airflow environment system of the present invention is useful in indoor spaces because it can zone an open local space and form a downflow airflow in the local space while preventing polluted air in the local space from diffusing outside the local space. [Explanation of symbols]

[0106] 1. Airflow Environment System 1a Airflow Environment System 1c Airflow Environment System 2 frame 2a Top 2b Bottom 2c First aspect 2d second side 2e Third aspect 2f Fourth side 3 First side wall 3a Second side wall 4 Nozzles 4a First nozzle group 4b Second nozzle group 5 Intake port 6 Blower section 7 First outlet 7a First outlet 7b First outlet 8 Second outlet 10 Air Purifying Filter 11 Blower 12 Duct 13 Branch 20 Airflow 21 Airflow 21a Airflow 21b Airflow 22 Induced air current 22a Induced air current 22b Induced air current 23 Airflow 23a Airflow 23b Airflow 24 Airflow 30 Table and chair set 31 Display S1 interior space S2 External space S3 Negative pressure area 140 Frame Q1 Air volume Q2 Air volume Q3 Air volume FL floor surface

Claims

1. A blower and a duct having an intake port for sucking in an airflow generated by the blower and for transporting the airflow sucked from the intake port to a position above the intake port; a plurality of nozzles each having a first outlet for blowing one of the air flows conveyed by the duct toward the suction port; a second air outlet for blowing out the other airflow conveyed by the duct above the first air outlet; a frame having a top surface, a first side surface, a second side surface, a third side surface, and a fourth side surface; a first side wall closing the first side surface, The nozzles extend from the first side to the second side, The duct is formed in the first side, The second air outlet is provided in the duct, The second air outlet blows out an air flow between adjacent ones of the nozzles. Airflow environmental system.

2. The nozzle is installed so that the surfaces on which the first air outlet is provided are flush with each other. The airflow environment system of claim 1 .

3. The plurality of nozzles are divided into a first nozzle group located on a central side and a second nozzle group located on an outer side of the first nozzle group, a blowing speed of the air blown out from the first blowing port of the second nozzle group is higher than a blowing speed of the air blown out from the first blowing port of the first nozzle group; The airflow environment system of claim 1 .

4. Further comprising a second side wall closing the third side surface, The plurality of nozzles are divided into a first nozzle group located on a central side and a second nozzle group located on an outer side of the first nozzle group, Air blown out from the first blowing outlet of the second nozzle group located on the fourth side surface side. the blowing speed of the air blown out from the first blowing outlet of the first nozzle group and the first blowing outlet of the second nozzle group located on the side of the second side wall is greater than the blowing speed of the air blown out from the first blowing outlet of the first nozzle group and the first blowing outlet of the second nozzle group located on the side of the second side wall, The airflow environment system of claim 1 .

5. Further provided with an air purification filter for purifying the air drawn in from the air inlet.

5. The airflow environment system of claim 1.

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