Airflow Environment System

Abstract

To provide an airflow environment system improving stability in the flow of air in a local space and suppressing the air in the local space from flowing to the outside.SOLUTION: An airflow environment system 1 causes a stream of airflow in a local space where a near side face of a pair of seat parts 3 allowing users to seat while facing each other is an open face X. The airflow environment system 1 includes: a suction port 6 sucking air in the local space; a purification part 2b purifying the air sucked from the sucking port 6; an emission port 5 emitting the air purified by the purification part 2b to the local space as airflows A1 flowing along a first direction on the rear side of the seat parts 3; and a reflection part 4 which is disposed so as to face the emission port 5 in the first direction and to which each of the airflows A1 contacts. The reflection part 4 makes respective airflows A2 emitted from the emission port 5 to contact, collide with each other and recirculate to a floor surface 10f so as to cross between the pair of seat parts 3.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an airflow environmental system for forming an airflow in an environmental space. [Background technology]

[0002] As a conventional airflow environment system, for example, an air purifier and a chair with an air curtain are known (see, for example, Patent Document 1). The air purifier and the chair with an air curtain are configured to include a seatable chair with a backrest, an air outlet at the top and back of the chair, an intake port at the bottom of the chair, and a filter, a damper, and a blower inside the chair. In an open space, the air purifier and the chair with an air curtain purify the air sucked in from the intake port and release it from the air outlets at the top and back. The air released from the air outlet at the top creates an air curtain that flows from above the chair, across the front of the chair, and back to the intake port at the bottom. Furthermore, by adjusting the amount of air discharged to the outside from the air outlet at the back of the chair, the local space surrounded by the chair and the air curtain is put into a negative pressure state, thereby suppressing the air in the local space (for example, cigarette smoke) from flowing out to the outside. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Publication No. 2-045013 Summary of the Invention [Problem to be solved by the invention]

[0004] However, in such conventional airflow environment systems, if the airflow forming the air curtain is affected by the external environment (disturbance), the airflow will be disrupted, and there is a concern that the air in the local space surrounded by the chair and the air curtain will leak out to the outside.

[0005] Therefore, the present invention is intended to solve the above-mentioned conventional problems, and aims to provide an airflow environment system that can improve the stability of air flow within a local space and prevent air within the local space from leaking to the outside. [Means for solving the problem]

[0006] To achieve this object, the present invention One aspect of The airflow environment system according to the present invention is an airflow environment system that generates an airflow in a specific space, the specific space having a pair of seats on which users can sit facing each other, and in which the side sides of the pair of seats are open to an external space. The airflow environment system includes an air intake port provided on the floor surface side of each of the pair of seats for drawing in air in the specific space, a purification unit for purifying the air drawn in from the air intake port, an exhaust port provided on each of the pair of seats for discharging a portion of the air purified by the purification unit to the external space, an exhaust port provided on each of the pair of seats for discharging the remainder of the air purified by the purification unit to the specific space on the back side of the seat as an airflow flowing along a specific direction, and an exhaust port provided on each of the pair of seats for discharging the remainder of the air purified by the purification unit to the specific space as an airflow flowing along the specific direction on the back side of the seat. and a reflecting portion that hits each of the air flows emitted from the outlet. The reflecting portion is configured to make the air flows that hit the air flows collide with each other and return to the floor surface side so as to cross between the pair of seats. In this way, the intended purpose is achieved. Effect of the Invention

[0007] According to the present invention, it is possible to provide an airflow environment system that can improve the stability of the airflow in a local space and prevent the air in the local space from leaking out to the outside. [Brief description of the drawings]

[0008] [Figure 1] FIG. 1 is an external perspective view of an airflow environment system according to a first embodiment of the present invention. [Diagram 2]FIG. 2 is an external perspective view showing the airflow generated by the airflow environment system. [Diagram 3] FIG. 3 is a front view showing the airflow created by the airflow environment system. [Figure 4] FIG. 4 is a block diagram showing the configuration of the air blowing system in the air flow environment system. [Diagram 5] FIG. 5 is a front view showing an airflow generated by an airflow environment system according to the second embodiment of the present invention. [Figure 6] FIG. 6 is an external perspective view showing an airflow generated by an airflow environment system according to the second embodiment of the present invention. [Figure 7] FIG. 7 is an external perspective view showing an airflow created by an airflow environment system according to the third embodiment of the present invention. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The present invention One aspect of The airflow environment system according to the present invention is an airflow environment system that generates an airflow in a specific space, the specific space including a pair of seats on which users can sit facing each other, and the side surfaces of the pair of seats being open to an external space. The airflow environment system includes an air intake port provided on the floor surface side of each of the pair of seats for drawing in air in the specific space, a purification unit for purifying the air drawn in from the air intake port, an exhaust port provided on each of the pair of seats for discharging a part of the air purified by the purification unit to the external space, an exhaust port provided on each of the pair of seats for discharging the remaining air purified by the purification unit to the specific space on the back side of the seat as an airflow flowing along a specific direction, and a reflecting unit that is disposed to face the exhaust port in the specific direction and is hit by each of the airflows flowing along the specific direction. The reflecting unit is configured to cause the airflows that are discharged from the exhaust port and hit against each other to collide with each other, and to return the airflow to the floor surface side so as to cross between the pair of seats.

[0010] With this configuration, in a specific space (local space) in which the side surfaces of a pair of seats are open to the outside space, an air curtain is formed in which the air flow is discharged from the discharge port on the back side of each seat and reflected by the reflecting part so as to cross between the pair of seats and return to the floor side, so that the air flow can be confined within the space on each seat side while suppressing the influence of the external environment (disturbance) on the air flow forming the air curtain. At this time, the air curtains are formed by causing the respective air flows to collide with each other, improving the stability of the air flow. In other words, an air flow environment system can be provided that can improve the stability of the air flow in the specific space and suppress the air in the specific space from leaking out to the outside space.

[0011] In the airflow environment system according to the present invention, the reflecting portion is preferably configured with a plate-shaped reflecting plate curved in an arc so as to be convex toward the ceiling surface side, whereby the airflow hitting the reflecting portion flows along the plate-shaped reflecting plate curved in an arc, improving the stability of the airflow.

[0012] In addition, in the airflow environment system according to the present invention, it is preferable that a pair of reflectors are provided corresponding to each of the airflows discharged from the outlet. In this way, each airflow flows along the arc-shaped reflector and collides with the reflector, which reduces energy loss due to collision of the airflows and makes it easier for the airflows to flow toward the floor. As a result, the stability of the airflow can be further improved.

[0013] In the airflow environment system according to the present invention, it is preferable that a separation wall is provided on the ceiling side of the open surface to separate the specific space from the external space so as to close the open surface side of the reflecting section. This makes it possible to suppress air flowing out from the open surface side of the reflecting section to the external space in the area where the airflow reflected by the reflecting section collides, thereby further enhancing the effect of suppressing air in the specific space from flowing out to the outside.

[0014] The airflow environment system according to the present invention may further include an air outlet provided at the end of the outlet on the open surface side, for blowing out an airflow inclined in the direction opposite to the open surface on the back side of the seat so as to join the airflow flowing along a specific direction. In this way, the airflow blown out from the air outlet does not collide with the open surface side of the reflector, and the collision of the airflow with the open surface side of the reflector is suppressed, thereby further enhancing the effect of suppressing the air in the specific space from leaking out to the outside space.

[0015] In the airflow environment system according to the present invention, it is preferable that each of the pair of seats has an area on the open side of the seat where no outlet is provided, thereby eliminating the collision of airflow on the open side of the reflecting section, and further enhancing the effect of suppressing the air in the specific space from leaking out to the outside space.

[0016] 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.

[0017] (Embodiment 1) First, an overview of an airflow environment system 1 according to a first embodiment of the present invention will be described with reference to Figures 1 to 3. Figure 1 is an external perspective view of the airflow environment system 1 according to the first embodiment of the present invention. Figure 2 is an external perspective view showing the airflow formed by the airflow environment system 1. Figure 3 is a front view showing the airflow formed by the airflow environment system 1.

[0018] In the following explanation, the left-right direction (left side, right side), up-down direction (floor surface on the lower side, ceiling surface on the upper side), and front-to-back direction (near side or front side of the front, rear side or rear side of the rear) are defined when viewing the airflow environment system 1 from the front; however, when viewing the seat unit 3 from the front, the front of the seat unit 3, the side (or near side) of the seat unit 3, and the rear of the seat unit 3 may also be described.

[0019] The airflow environment system 1 is installed, for example, in an open space as a private room unit 10 that also serves as a meeting space, a rest space, and the like. As shown in FIG. 1, the airflow environment system 1 is a system that generates an airflow in a local space (local space SP1, local space SP2) in which a pair of seats 3 (seats 3 equipped with an air blowing system 2) are provided in the private room unit 10, where users can sit facing each other, and one of the side sides of the pair of seats 3 (the front side of the seats 3) is an open surface X that is open to the external space SP3. In the airflow environment system 1, the airflow operation of the air blowing system 2 prevents the air in the local space SP1 (or local space SP2) formed by the private room unit 10 and the air curtain 8 from leaking (flowing out) to the opposing local space SP2 (or local space SP1) and the external space SP3, thereby preventing the diffusion of odors or polluted air. Note that one or both of the local space SP1 and the local space SP2 correspond to the "specific space" in the claims. Moreover, the local space SP1 and the local space SP2 can also be called environmental spaces.

[0020] More specifically, the airflow environment system 1 includes a box-shaped private room unit 10, a pair of seat sections 3 having an air blowing system 2, and a reflecting section 4, as shown in FIG.

[0021] The private room unit 10 is a structure that constitutes a local space used by users for meetings or breaks. Specifically, the private room unit 10 is surrounded by a left wall surface 10a, a right wall surface 10b, a ceiling side wall surface 10c, a back wall surface 10d, a separation wall surface 10e that covers a part of the ceiling side in front of the front side, and a floor surface 10f, and has an open surface X in which the front side of the seating part 3 is open to the external space SP3. The "open surface X" is a virtual surface that does not have a substance and is a virtual surface surrounded by the wall surface 10a, the wall surface 10b, and the front end of the separation wall 10e. Inside the private room unit 10, a pair of seating parts 3 are installed on the floor surface 10f, and a reflecting part 4 is installed on the wall surface 10c on the ceiling side.

[0022] Here, the separation wall 10e is a member that separates the local spaces (local spaces SP1, SP2) from the external space SP3 on the ceiling surface side of the open surface X so as to close the open surface X side of the reflecting section 4.

[0023] Furthermore, the floor surface 10f is a member that constitutes the private unit 10, but may also be the floor of an open space in which the private unit 10 is installed.

[0024] The pair of seats 3 are seats where users can sit facing each other, and are arranged facing each other. Specifically, one of the pair of seats 3 is installed on the left wall surface 10a side of the private room unit 10, and the other is installed on the right wall surface 10b side of the private room unit 10. A table is arranged between the pair of seats 3. The following description focuses on one of the pair of seats 3, but the other seat 3 has the same structure and function.

[0025] 1, the seat section 3 has a base and a backrest on which a user can sit. The seat section 3 also has a built-in air-blowing system 2, and the seat section 3 also serves as a member that constitutes the outer frame of the air-blowing system 2. The seat section 3 further has an outlet 5, an intake 6, and an exhaust 7 for operating the air-blowing system 2 to generate an air flow (air curtain 8).

[0026] The outlet 5 is an opening that releases the air into the local space (local space SP1 or local space SP2) as an airflow A1 (see FIG. 2) flowing along a first direction (vertically upward) on the back side of the seat 3. Specifically, the outlet 5 is disposed on the upper surface of the backrest of the seat 3, and is configured by a slit-shaped opening (or a plurality of holes). The outlet 5 is formed extending from the front side surface of the seat 3 to the rear wall surface 10d along the upper surface of the backrest. The outlet 5 is connected in communication with the ventilation system 2, and releases the air blown from the ventilation system 2 into the local space as an airflow A1 flowing along the first direction. Here, the airflow A1 released from the outlet 5 flows along the wall surface (wall surface 10a or wall surface 10b) due to the attraction phenomenon caused by the Coanda effect (a negative pressure area is generated between the blown air and the wall surface on the back side of the seat 3, and the blown airflow is attracted to the negative pressure area). The first direction corresponds to the "specific direction" in the claims.

[0027] The air intake 6 is an opening that draws in air from the local space (local space SP1 or local space SP2). The air intake 6 is disposed on the floor surface 10f side of the base of the seat 3, and is composed of, for example, a plurality of slit-shaped holes that are long in the vertical direction. The air intake 6 is formed extending from the front side surface of the seat 3 to the rear wall surface 10d along the front surface of the base of the seat 3. The air intake 6 draws in air from the local space in accordance with the blowing operation of the air blowing system 2. The air intake 6 is also connected in communication with the air blowing system 2 via the internal space (not shown) of the seat 3, and sends out the drawn-in air to the purification unit 2b (see FIG. 4) that constitutes the air blowing system 2.

[0028] The exhaust port 7 is an opening that exhausts a portion of the air in the local space (local space SP1 or local space SP2) to the external space SP3. Specifically, the exhaust port 7 is disposed on the front side surface of the base of the seat 3. The exhaust port 7 is connected in communication with the air blowing system 2, and exhausts a portion of the air purified by the purification unit 2b to the external space SP3 as the air blowing system 2 blows air.

[0029] As described above, the air blowing system 2 is configured to be housed or held inside the seat portion 3. The air blowing system 2 is connected in communication with each of the outlet 5, the intake vent 6, and the exhaust vent 7 in the internal space of the seat portion 3. The air blowing operation of the air blowing system 2 causes air in the local space (local space SP1 or local space SP2) to be sucked into the air blowing system 2 from the intake vent 6. Thereafter, a portion of the sucked air is exhausted from the exhaust vent 7 to the external space SP3, and the remainder of the sucked air is discharged from the exhaust vent 5 to the local space. Details of the air blowing system 2 will be described later.

[0030] The seat portion 3 is composed of the above-mentioned components.

[0031] Next, the reflecting section 4 will be described.

[0032] The reflecting unit 4 is installed on the wall surface 10c on the ceiling side of the private room unit 10 at a position facing the ventilation system 2 in the first direction, and is a member that is hit by each of the air flows A1 flowing along the first direction. The reflecting unit 4 causes the air flows A1 that are discharged from the discharge port 5 and hit each other to collide with each other, and returns the air flows to the floor surface 10f side so as to cross between the pair of seats 3.

[0033] Specifically, as shown in FIG. 3, the reflecting section 4 is installed on the wall surface 10c on the ceiling surface side of the private room unit 10. The reflecting section 4 is disposed so as to face the discharge port 5 in the first direction (vertical upward direction), and the lower surface of the reflecting section 4 (the surface facing the discharge port 5) has a curved surface 4a with a recessed central portion and substantially semi-cylindrical (semi-cylindrical) shape. Specifically, the substantially semi-cylindrical curved surface 4a has an axial direction substantially parallel to the wall surfaces 10a and 10b, and is curved in an arc shape convex toward the ceiling surface side when viewed along the axial direction. It can also be said that the reflecting section 4 is composed of a plate-shaped reflecting plate curved in an arc shape convex toward the ceiling surface side.

[0034] In the reflecting section 4, when the airflow environment system 1 (air blowing system 2) is in operation, the airflows A1 (airflows A1 flowing along the first direction) discharged from the respective discharge ports 5 hit the curved surface 4a of the reflecting section 4. Then, each of the airflows A1 that hit the curved surface 4a becomes an airflow A2 that flows in a second direction (from the back side of the seat section 3 toward the front side) along the curved surface 4a. Furthermore, the airflow A2 that flows in the second direction along the curved surface 4a collides with the airflow A2 flowing from the opposite side at the center of the reflecting section 4 (curved surface 4a), and is discharged from the center of the reflecting section 4 (curved surface 4a) toward the floor surface 10f as an air curtain 8 that flows in a third direction (from the ceiling surface toward the floor surface 10f).

[0035] Next, the air blowing system 2 will be described with reference to Fig. 4. Fig. 4 is a block diagram showing the configuration of the air blowing system 2 in the air flow environment system 1. Note that the air blowing system 2 is built into each of the pair of seats 3, but similar to the description of the seats 3, the description will focus on one of the pair of seats 3.

[0036] The air supply system 2 is a unit that is installed on the wall surface 10c on the floor side within the local space (local space SP1 or local space SP2) and releases air flow A1 (see Figure 2) flowing along a first direction on the back side of the seat portion 3 into the local space.

[0037] Specifically, as shown in FIG. 4, the air blowing system 2 includes an air blowing device 2a and a purification section 2b.

[0038] The blower 2a is a device that, under the control of a control unit (not shown), draws in air within a local space (local space SP1 or local space SP2) from an air intake 6, generates an airflow A1 flowing along a first direction (vertical upward direction), and sends it out to an air outlet 5. The blower 2a is, for example, a sirocco fan that generates an airflow that contains more linear components than swirling components.

[0039] The purifying unit 2b is a device that purifies the air in the local space (local space SP1 or local space SP2) that is sucked in from the intake port 6. The purifying unit 2b can also be said to be a device that purifies the air flow A1 that is discharged from the outlet 5 to the local space (local space SP1 or local space SP2) and the air flow that is discharged from the outlet 7 to the external space SP3. Specifically, the purifying unit 2b is, for example, an air filter installed in an air passage through which the air sucked in from the intake port 6 flows, and removes viruses, pollen, dirt, dust, etc. from the air sucked in from the intake port 6 and outputs purified air. For example, a HEPA (High Efficiency Particulate Air) filter is used for the purifying unit 2b. The air purified by the purifying unit 2b is discharged upward from the outlet 5 as an air flow by the blower 2a. The purifying section 2b may be a space sterilizing deodorizing machine configured to generate hypochlorous acid water by electrolysis or the like and mix the hypochlorous acid into the airflow generated by the blower 2a.

[0040] Next, the airflow in the airflow environment system 1 will be described with reference to FIG.

[0041] In the airflow environment system 1, as shown in FIG. 3, the airflow A1 flowing along the first direction is discharged from each outlet 5 by the air blowing operation of the air blowing system 2. Here, the airflow A1 discharged from the outlet 5 flows along the wall surface (wall surface 10a, wall surface 10b) due to the attraction phenomenon caused by the Coanda effect. Then, the airflow A1 discharged from the outlet 5 hits the curved surface 4a at the end of the curved surface 4a in the reflecting section 4. Then, each of the airflows A1 that hit the curved surface 4a becomes an airflow A2 that flows along the curved surface 4a in the second direction (the direction from the back side to the front side of the seating section 3). Furthermore, the airflow A2 flowing in the second direction along the curved surface 4a collides with the airflow A2 flowing from the opposite side at the center of the reflecting section 4 (curved surface 4a), and becomes an airflow A3 that flows in a third direction toward the floor surface 10f side. At the point where the opposing air flows A2 collide, the air flow A3 tries to flow not only in the third direction toward the floor surface 10f but also in the direction toward the open surface X, but is reflected by the separation wall 10e and flows in the third direction. In other words, the separation wall 10e has a role of suppressing the air flow A3 that tries to flow out from the open surface X side of the reflecting part 4 into the external space SP3.

[0042] Then, the air flow A3 is emitted from the center of the reflecting portion 4 (curved surface 4a) toward the floor surface 10f side to form the air curtain 8. In other words, the air flow A3 flows toward the floor surface 10f side so as to cross between the pair of seats 3 to form the air curtain 8. That is, the space between the pair of seats 3 is blocked by the air curtain 8.

[0043] After that, the air curtain 8 hits the table top and splits into two parts on each side of the pair of seats 3, and each part of the split flows around into the space below the table. Then, the air flow A4 that has flowed around into the space below the table is sucked into the ventilation system 2 through each of the air intakes 6.

[0044] The air flow A4 sucked into the ventilation system 2 is purified by the purification section 2b, after which a portion of it is discharged from the exhaust port 7 (see Figure 1) to the external space SP3, and the majority of the remaining air is again discharged upward from the discharge port 5 as the air flow A1.

[0045] In this way, in the airflow environment system 1, a series of air flows (air flows A1 to A4) are formed in the local spaces (local spaces SP1 and SP2). That is, in the airflow environment system 1, in the local spaces (local spaces SP1 and SP2) in which the front side of a pair of seats 3 is an open surface X that is open to the external space SP3, an air curtain 8 is formed in which air flows A3 that are discharged from the discharge port 5 on the rear side of each seat 3 and reflected by the reflecting portion 4 cross between the pair of seats 3 and return to the floor surface 10f side. As a result, in the airflow environment system 1, a local space SP1 corresponding to one seat 3 and a local space SP1 corresponding to the other seat 3 are separately configured in the local space of the private room unit 10.

[0046] As described above, according to the airflow environment system 1 according to the first embodiment, the following effects can be obtained.

[0047] (1) The airflow environment system 1 is a system that generates an airflow in a local space (local space SP1, local space SP2) that includes a pair of seats 3 on which users can sit facing each other, and in which the front side of the pair of seats 3 is an open surface X that is open to an external space SP3. The airflow environment system 1 includes an air intake 6 provided on the floor surface 10f side of each of the pair of seats 3 to draw in air from the local space, a purification unit 2b that purifies the air drawn in from the air intake 6, an exhaust port 7 provided on each of the pair of seats 3 to discharge a portion of the air purified by the purification unit 2b to the external space SP3, an exhaust port 5 provided on each of the pair of seats 3 to discharge the remainder of the air purified by the purification unit 2b to the local space as an air flow A1 flowing along a first direction on the back side of the seat 3, and a reflection unit 4 that is arranged to face the exhaust port 5 in the first direction and hits each of the air flows A1 flowing along the first direction. The reflecting section 4 is configured to collide the air flows A2 discharged from the discharge port 5 and hitting each other, and to return the air flows to the floor surface 10f side so as to cross between the pair of seats 3.

[0048] As a result, in the local spaces (local spaces SP1 and SP2) in which the front side surfaces of the pair of seats 3 are open surfaces X that are open to the external space SP3, air flows A3 that are discharged from the discharge port 5 on the rear side of each seat 3 and reflected by the reflecting unit 4 are formed to flow back to the floor surface 10f side so as to cross between the pair of seats 3, forming an air curtain 8, so that the air flow can be confined within the local space (local space SP1 or local space SP2) on each seat 3 side while suppressing the influence of the external environment (disturbance) on the air flows (air flows A1 to A3) that form the air curtain 8. At this time, the air flows A2 are caused to collide with each other to form the air curtain 8, improving the stability of the air flow. In other words, the air flow environment system 1 can be made to improve the stability of the air flow within the local space (local space SP1 or local space SP2) and suppress the air within the local space (local space SP1 or local space SP2) from flowing out to the external space SP3.

[0049] (2) In the air flow environment system 1, the two air flows A2 collide with each other to form an air curtain 8 that crosses between a pair of seats 3. This improves the stability of the air flow compared to air curtains in conventional air flow environment systems.

[0050] (3) In the airflow environment system 1, the reflecting unit 4 is configured with a plate-shaped reflecting plate that is curved in an arc so as to be convex toward the ceiling surface. This allows the airflow A1 that hits the reflecting unit 4 to flow along the plate-shaped reflecting plate that is curved in an arc, improving the stability of the airflow.

[0051] (4) In the airflow environment system 1, a separation wall 10e that separates the local spaces (local spaces SP1 and SP2) from the external space SP3 is provided on the ceiling surface side of the open surface X so as to close the open surface X side of the reflecting unit 4. This makes it possible to suppress the airflow A3 that attempts to flow out from the open surface X side of the reflecting unit 4 to the external space SP3 in the area where the airflow A2 reflected by the reflecting unit 4 collides, thereby further enhancing the effect of suppressing the air in the local spaces from flowing out to the outside.

[0052] Furthermore, the air flow A3 that strikes the separation wall 10e generates a flow toward the floor surface 10f, so that the air curtain 8 can be stabilized.

[0053] (5) In the airflow environment system 1, local spaces (local spaces SP1, SP2) are configured as box-shaped private room units 10, in which the front side surfaces of a pair of seats 3 form an open surface X that is open to the external space SP3. This makes it possible to reduce the effects of the external environment (disturbances) on the air flows (air flows A1 to A4, air curtain 8) formed in the local spaces.

[0054] (6) The airflow environment system 1 is configured to have an exhaust port 7 so that a portion of the air purified by the purification unit 2b is exhausted to the external space SP3. This makes it possible to put the local space (local space SP1 or local space SP2) surrounded by the seat unit 3 and the air curtain 8 into a negative pressure state, thereby further preventing the air in the local space from flowing out to the external space SP3.

[0055] (Embodiment 2) An airflow environment system 1a according to the second embodiment of the present invention differs from the first embodiment in that the shape of the reflecting portion 14 is composed of two curved surfaces that are approximately semi-cylindrical (semi-cylindrical). Other than this, 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.

[0056] An airflow environment system 1a according to a second embodiment of the present invention will be described with reference to Fig. 5. Fig. 5 is a front view showing an airflow formed by the airflow environment system 1a according to the second embodiment of the present invention.

[0057] As shown in FIG. 5, the reflecting section 14 is installed on the wall surface 10c on the ceiling surface side of the private room unit 10. The reflecting section 14 is disposed so as to face the discharge port 5 in the first direction (vertical upward direction), and the lower surface of the reflecting section 14 (the surface facing the discharge port 5) has curved surfaces 14a and 14b whose central portions are recessed and have a substantially semi-cylindrical (semi-cylindrical) shape. Specifically, the axial direction of each of the substantially semi-cylindrical curved surfaces 14a and 14b is substantially parallel to the wall surfaces 10a and 10b, and when viewed along the axial direction, the central portions are curved in an arc shape so as to be convex toward the ceiling surface side. It can also be said that the reflecting section 14 is configured by connecting two plate-shaped reflecting plates curved in an arc shape so as to be convex toward the ceiling surface side.

[0058] In the reflecting section 14, when the airflow environment system 1a (air blowing system 2) is in operation, the airflow A1 (airflow A1 flowing along the first direction) discharged from one of the discharge ports 5 hits the curved surface 14a of the reflecting section 14, and the airflow A1 (airflow A1 flowing along the first direction) discharged from the other discharge port 5 hits the curved surface 14b of the reflecting section 14. After that, the airflow A1 that hits the curved surface 14a becomes the airflow B1 that flows in the second direction (direction from the back side to the front side of one of the seat parts 3) along the curved surface 14a. On the other hand, the airflow A1 that hits the curved surface 14b becomes the airflow B1 that flows in the second direction (direction from the back side to the front side of the other seat part 3) along the curved surface 14b. After that, when each of the airflows B1 reaches the connecting part between the curved surface 14a and the curved surface 14b (the center part of the reflecting section 14), it changes so as to be directed in an oblique direction with respect to the floor surface 10f.

[0059] Then, the air flow B1 flowing in the second direction along the curved surface 14a collides with the air flow B1 flowing from the opposite side at the connecting portion (the center of the reflecting portion 14) between the curved surfaces 14a and 14b of the reflecting portion 4, and is released from the center of the reflecting portion 14 toward the floor surface 10f as an air curtain 8 flowing in the third direction (from the ceiling surface side toward the floor surface 10f side).

[0060] In the airflow environment system 1a, the colliding airflow B1 forms an air curtain 8 that crosses between the pair of seats 3. In other words, the space between the pair of seats 3 is blocked by the air curtain 8. In the airflow environment system 1a, the airflow returns in the same manner as in the airflow environment system 1.

[0061] As described above, according to the airflow environment system 1a of the second embodiment, the following effects can be obtained.

[0062] (7) In the airflow environment system 1a, a pair of reflectors, each of which is a plate-shaped reflector curved in an arc so as to be convex toward the ceiling surface side, is provided as the reflector 14 in correspondence with each of the airflows A1 discharged from the discharge port 5. In other words, in the airflow environment system 1a, the reflector 14 is configured such that the axial direction of the reflector 14 is substantially parallel to the wall surface 10a and the wall surface 10c, and the curved surfaces 14a and 14b, each of which is curved in an arc so as to be convex toward the ceiling surface side, are continuous in a direction perpendicular to the axis. As a result, each airflow B1 flows along the reflectors curved in an arc and collides with each other, so that the energy loss due to the collision of the airflow B1 is suppressed, and the airflow B1 is more likely to flow toward the floor surface 10f side. As a result, the stability of the airflow can be further improved.

[0063] (Embodiment 3) The airflow environment system 1b according to the third embodiment of the present invention differs from the first embodiment in that a part of the outlet 5 (the outlet 5 at the end on the open surface X side) is configured as an air outlet 5a, and the air outlet 5a is configured to incline the airflow direction in the direction opposite to the external space SP3. The rest of the configuration of the airflow environment system 1b 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.

[0064] An airflow environment system 1b according to a third embodiment of the present invention will be described with reference to Fig. 6. Fig. 6 is an external perspective view showing an airflow formed by the airflow environment system 1b according to the third embodiment of the present invention.

[0065] In the airflow environment system 1b, the outlet 5 is composed of a plurality of holes. Among the outlets 5 arranged at a predetermined interval along the upper surface of the backrest of the seat 3 from the front side of the seat 3 to the rear wall surface 10d, the outlet 5 located at the end on the open surface X side is set as an air outlet 5a that blows out the airflow C1 in a fourth direction (the direction indicated by the arrow indicating the airflow C1 in FIG. 4) different from the first direction of the other outlets 5. In other words, the airflow environment system 1b includes an air outlet 5a that is provided at the end of the outlet 5 on the open surface X side and blows out the airflow C1 inclined in the direction opposite to the open surface X on the back side of the seat 3 so as to join the airflow A1 flowing along the first direction on the ceiling surface side.

[0066] Here, the air flow C1 has the role of preventing the air flow A1 flowing along the first direction from diffusing and flowing out into the external space SP3 when the air flow A1 flows along the wall surface (wall surface 10a or wall surface 10b) on the rear side of the seat portion 3.

[0067] As described above, according to the airflow environment system 1b of the third embodiment, the following effects can be obtained.

[0068] (8) In the airflow environment system 1b, the air outlet 5a is provided at the end of the air outlet 5 on the open surface X side, and blows out an airflow C1 that is inclined in the direction opposite to the open surface X on the back side of the seat section 3 so as to merge with the airflow A1 flowing along the first direction. As a result, the airflow C1 blown out from the air outlet 5a does not collide with the open surface X side of the reflecting section 4, and the collision of the airflow A2 with the open surface X side of the reflecting section 4 is suppressed, so that it is possible to suppress the air in the local spaces (local spaces SP1 and SP2) from flowing out into the external space SP3.

[0069] (9) In the airflow environment system 1a, among the air outlets 5 consisting of a number of holes arranged along the upper part of the backrest of the seat 3, the airflow C1 discharged from some of the holes (air outlets 5a) on the open surface X side is configured to be discharged in a direction inclined away from the external space SP3 at the end on the open surface X side. This makes it possible to suppress the diffusion of the airflow A1 that flows out from the open surface X to the external space SP3 by the airflow C1 discharged at an angle.

[0070] (Embodiment 4) An airflow environment system 1c according to a fourth embodiment of the present invention differs from the first embodiment in that the airflow environment system 1c is configured so that the blowing range of the outlet is shorter toward the local space SP1 and local space SP2 than the open surface X. Other than this, the configuration of the airflow environment system 1c 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.

[0071] An airflow environment system 1c according to a fourth embodiment of the present invention will be described with reference to Fig. 7. Fig. 7 is an external perspective view showing the airflow formed by the airflow environment system 1c according to the fourth embodiment of the present invention.

[0072] In the airflow environment system 1c, the outlet 5 is arranged on the upper surface of the backrest of the seat 3 as shown in Fig. 7, and is configured as a slit-shaped opening (or a plurality of holes) with a short open surface X side with respect to the opposing reflector 4 on the ceiling surface side. In other words, each of the pair of seats 3 has an area 5b on the open surface X side of the upper surface of the backrest where the outlet 5 is not provided.

[0073] As described above, according to the airflow environment system 1c according to the fourth embodiment, the following effects can be obtained.

[0074] (10) In the airflow environment system 1c, a region 5b where no outlet 5 is provided is provided on the open surface X side of the seat 3 in each of the pair of seats 3. As a result, in the airflow environment system 1c, when the airflow A1 flows along the wall surface (wall surface 10a or wall surface 10b) on the back side of the seat 3, the air is diffused and deviates from the first direction to the open surface X side, making it difficult for the airflow A1 to flow out from the open surface X to the external space SP3 without hitting the reflecting unit 4. In addition, in the airflow environment system 1c, there is no collision of the airflow A2 on the open surface X side of the reflecting unit 4, so that it is possible to suppress the air in the local space (local space SP1 and local space SP2) from flowing out to the external space SP3.

[0075] The present invention has been described above based on the embodiments, but the present invention is not limited to the above embodiments, and it can be easily imagined that various improvements and modifications are possible within the scope of the present invention without departing from the spirit of the present invention.

[0076] In the airflow environment system 1 according to the first embodiment, the outlet 5 is provided on the upper surface of the backrest of the seat 3, but this is not limited to this. For example, a gap may be provided between the seat 3 and the wall surface (wall surface 10a or wall surface 10b) on the rear side of the seat 3, and the outlet 5 may be located in the gap. This improves the design freedom of the airflow environment system 1.

[0077] In the airflow environment system 1 according to the first embodiment, the private room unit 10 is configured with the front side surface of the seating section 3 as the open surface X, but this is not limited to this. For example, the rear side surface of the seating section 3 may also be configured as the same open surface as the open surface X. Even in this case, the above-mentioned effects can be obtained. [Industrial Applicability]

[0078] The airflow environmental system according to the present invention is useful because it can suppress leakage of contaminated air within an environmental space to an external space. [Explanation of symbols]

[0079] 1. Airflow Environment System 1a Airflow Environment System 1b Airflow Environment System 1c Airflow Environment System 2. Air Blowing System 2a Air blower 2b Purification section 3. Seat 4 Reflector 4a curved surface 4b curved surface 4c curved surface 5 Outlet 5a Air outlet 5b area 6 Air Intake 7 Outlet 8. Air Curtain 10 Private Room Units 10a Wall 10b Wall 10c Wall 10d Wall 10e Separation Wall 10th floor 14 Reflector 14a Curved surface 14b Curved surface SP1 Local Space SP2 Local Space SP3 External Space X Open side A1 Air flow A2 Air flow A3 Air flow A4 Air flow B1 Air flow C1 Airflow

Claims

1. An airflow environment system that generates an airflow in a specific space having a pair of seats on which users can sit facing each other, the side surfaces of the pair of seats being open to an external space, the airflow environment system comprising: an air intake provided on a floor surface side of each of the pair of seat portions, the air intake opening configured to draw in air from the specific space; an exhaust port provided in each of the pair of seat portions and configured to discharge a portion of the air drawn in through the air intake port to an external space; an exhaust port provided in each of the pair of seats, which exhausts the remaining air sucked through the intake port to the specific space as an air flow flowing along a specific direction on a back side of the seat; a reflecting portion that is disposed to face the outlet in the specific direction and that is hit by each of the air flows that flow along the specific direction; Equipped with The reflecting section is configured to collide the air flows emitted from the outlets and hit each other, and to return the air flows to a floor surface side so as to cross between the pair of seats, An airflow environment system characterized in that a separation wall is provided on the ceiling side of the open surface to separate the specific space from the external space so as to close the open surface side of the reflecting section.

2. An airflow environment system that generates an airflow in a specific space having a pair of seats on which users can sit facing each other, the side surfaces of the pair of seats being open to an external space, the airflow environment system comprising: an air intake provided on a floor surface side of each of the pair of seat portions, the air intake opening configured to draw in air from the specific space; an exhaust port provided in each of the pair of seat portions and configured to discharge a portion of the air drawn in through the air intake port to an external space; an exhaust port provided in each of the pair of seats, which exhausts the remaining air sucked through the intake port to the specific space as an air flow flowing along a specific direction on a back side of the seat; a reflecting portion that is disposed to face the outlet in the specific direction and that is hit by each of the air flows that flow along the specific direction; Equipped with The reflecting section is configured to collide the air flows emitted from the outlets and hit each other, and to return the air flows to a floor surface side so as to cross between the pair of seats, The airflow environment system further comprises an air outlet provided at the end of the outlet on the open surface side, for blowing out an airflow inclined in a direction opposite to the open surface on the back side of the seat portion so as to join the airflow flowing along the specific direction.

3. An airflow environment system that generates an airflow in a specific space having a pair of seats on which users can sit facing each other, the side surfaces of the pair of seats being open to an external space, the airflow environment system comprising: an air intake provided on a floor surface side of each of the pair of seat portions, the air intake opening configured to draw in air from the specific space; an exhaust port provided in each of the pair of seat portions and configured to discharge a portion of the air drawn in through the air intake port to an external space; an exhaust port provided in each of the pair of seats, which exhausts the remaining air sucked through the intake port to the specific space as an air flow flowing along a specific direction on a back side of the seat; a reflecting portion that is disposed to face the outlet in the specific direction and that is hit by each of the air flows that flow along the specific direction; Equipped with The reflecting section is configured to collide the air flows emitted from the outlets and hit each other, and to return the air flows to a floor surface side so as to cross between the pair of seats, An airflow environment system, characterized in that each of the pair of seat sections has an area on the open surface side of the seat section where the outlet is not provided.

4. An airflow environment system as described in any one of claims 1 to 3, characterized in that it is provided with a purification section that purifies the air sucked in through the air intake port.

5. 2. The airflow environment system according to claim 1, wherein the reflecting portion is configured by a plate-like reflecting plate curved in an arc shape so as to be convex toward the ceiling surface side.

6. 6. The airflow environment system according to claim 5, wherein a pair of the reflecting plates are provided corresponding to the respective air flows discharged from the discharge port.

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