JP7637849B2 - Airflow Environment System - Google Patents

Description

The present invention relates to an airflow environmental system that creates airflow in an environmental space.

For example, an air purifier and a chair with an air curtain are known as conventional airflow environment systems (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, suppressing the air in the local space (for example, cigarette smoke) from leaking out to the outside.

Japanese Patent Application Publication No. 2-045013

However, in such conventional airflow environment systems, if the airflow that forms the air curtain is affected by the external environment (disturbances), the airflow will be disrupted, raising concerns that the air in the local space enclosed by the chair and air curtain may leak out to the outside.

The present invention aims to solve the above-mentioned problems of the conventional technology by providing 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 to the outside.

In order to achieve this object, an airflow environment system according to one aspect of 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 are open to an external space. The airflow environment system includes an intake port provided on the floor surface side of each of the pair of seats to draw in air in the specific space, a purification unit that purifies the air drawn in from the intake port, an exhaust port provided on each of the pair of seats to discharge 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 to discharge 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 arranged 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. This achieves the intended object.

The present invention provides 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 to the outside.

FIG. 1 is a perspective view of the exterior of an airflow environment system according to a first embodiment of the present invention. FIG. 2 is an external perspective view showing an airflow created by the airflow environment system. FIG. 3 is a front view showing the airflow created by the airflow environment system. FIG. 4 is a block diagram showing the configuration of an air blowing system in the air flow environment system. FIG. 5 is a front view showing an airflow created by the airflow environment system according to the second embodiment of the present invention. 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. FIG. 7 is an external perspective view showing an airflow generated by an airflow environment system according to the third embodiment of the present invention.

An airflow environment system according to one aspect of 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 sides of the pair of seats being open to an external space. The airflow environment system includes an air intake port provided on the floor 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 airflows to the floor side so as to cross between the pair of seats.

By configuring it in this way, in a specific space (local space) where the side sides 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 outlet on the back side of each seat and reflected by the reflecting part, and flows back to the floor side so as to cross between the pair of seats. This makes it possible to confine the air flow within the space on each seat side while suppressing the effects of the external environment (disturbances) on the air flow that forms the air curtain. In this case, 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, it is possible to create an air flow environment system that improves the stability of the air flow within the specific space and prevents the air within the specific space from leaking out to the outside space.

In addition, in the airflow environment system according to the present invention, it is preferable that the reflecting portion is configured by a plate-shaped reflecting plate that is curved in an arc so that it is convex toward the ceiling surface. This allows the air flow that hits the reflecting portion to flow along the plate-shaped reflecting plate that is curved in an arc, improving the stability of the air flow.

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 curved reflector and collides with it, so energy loss due to the collision of the airflows is suppressed and the airflows tend to flow toward the floor surface. As a result, the stability of the airflow can be further improved.

In addition, 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 that attempts to flow 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.

The airflow environment system of the present invention may further include an air outlet provided at the end of the outlet on the open surface side, which blows out an airflow that is inclined in the direction opposite the open surface on the back side of the seat so that the airflow merges with 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 external space.

In addition, in the airflow environment system according to the present invention, it is preferable that each of the pair of seating sections has an area on the open surface side of the seating section where no outlet is provided. This eliminates the collision of airflow on the open surface side of the reflecting section, further enhancing the effect of preventing air in a specific space from leaking out to the external space.

The following describes an embodiment of the present invention 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 ratio of the size and thickness of each component in each figure does not necessarily reflect the actual dimensional ratio.

(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.

In the following explanation, the left-right direction (left side, right side), the up-down direction (floor surface on the lower side, ceiling surface on the upper side), and the front-rear direction (near side or front side of the near side, rear side or rear side of the rear side) are defined when the airflow environment system 1 is viewed from the front, but they may also be described as the front of the seat unit 3, the side of the seat unit 3 (or the near side), and the rear of the seat unit 3 when viewed from the front.

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, etc. 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 (leaking) into 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 spaces SP1 and SP2 correspond to the "specific space" in the claims. The local spaces SP1 and SP2 can also be called environmental spaces.

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

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 wall surface 10c on the ceiling side, a wall surface 10d on the back side, a separation wall 10e that covers part of the ceiling side on the front side, and a floor surface 10f, and has an open surface X where the front side of the seating section 3 is open to the external space SP3. Note that the "open surface X" is a virtual surface that does not have a physical entity, and is a virtual surface surrounded by the walls 10a and 10b, and the front end of the separation wall 10e. Inside the private room unit 10, a pair of seats 3 are installed on the floor surface 10f, and a reflecting section 4 is installed on the wall surface 10c on the ceiling side.

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

Floor surface 10f is a component that constitutes private room unit 10, but it may also be the floor of an open space in which private room unit 10 is installed.

The pair of seats 3 are arranged facing each other, allowing users to sit 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 disposed 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.

As shown in FIG. 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 to operate the air blowing system 2 and generate an air flow (air curtain 8).

The discharge port 5 is an opening that discharges the air flow A1 (see FIG. 2) flowing along the first direction (vertically upward) on the back side of the seat 3 into the local space (local space SP1 or local space SP2). Specifically, the discharge port 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 discharge port 5 is formed extending from the front side of the seat 3 to the rear wall surface 10d along the upper surface of the backrest. The discharge port 5 is connected in communication with the ventilation system 2 and discharges the air blown from the ventilation system 2 into the local space as the air flow A1 flowing along the first direction. Here, the air flow A1 discharged from the discharge port 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 air flow is attracted to the negative pressure area). The first direction corresponds to the "specific direction" in the claims.

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 located on the floor surface 10f side of the seat base of the seat 3, and is composed of, for example, multiple slit-shaped holes that are long in the vertical direction. The air intake 6 is formed extending along the front surface of the seat base of the seat 3 from the front side surface of the seat 3 to the rear wall surface 10d. The air intake 6 draws in air from the local space in conjunction with the blowing operation of the blowing system 2. The air intake 6 is also connected in communication with the blowing system 2 via the internal space (not shown) of the seat 3, and sends the drawn-in air to the purification section 2b (see FIG. 4) that constitutes the blowing system 2.

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 of the base of the seat portion 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 operation of the air blowing system 2 proceeds.

As described above, the air supply system 2 is configured to be housed or held inside the seat section 3. The air supply system 2 is connected in communication with each of the outlet 5, intake 6, and exhaust 7 in the internal space of the seat section 3. The air supply system 2 blows air, and air in the local space (local space SP1 or local space SP2) is sucked into the air supply system 2 through the intake 6. After that, a portion of the sucked air is exhausted from the exhaust 7 to the external space SP3, and the remainder of the sucked air is exhausted from the exhaust 5 to the local space. Details of the air supply system 2 will be described later.

The seat section 3 is composed of the above components.

Next, we will explain the reflector 4.

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 each of the air flows A1 that are released from the outlet 5 and hit it to collide with each other, and returns the air flows to the floor surface 10f side so as to cross between the pair of seating sections 3.

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

In the reflecting section 4, when the airflow environment system 1 (air blowing system 2) is in operation, the airflow A1 (airflow A1 flowing along the first direction) discharged from each discharge port 5 hits the curved surface 4a of the reflecting section 4. Then, each of the airflows A1 that hit the curved surface 4a becomes airflow A2 that flows in the second direction (from the back side to the front side of the seat section 3) along the curved surface 4a. 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 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 the third direction (from the ceiling surface side toward the floor surface 10f side).

Next, the air supply system 2 will be described with reference to FIG. 4. FIG. 4 is a block diagram showing the configuration of the air supply system 2 in the air flow environment system 1. Note that the air supply system 2 is built into each of the pair of seat sections 3, but as with the description of the seat sections 3, the description will focus on one of the pair of seat sections 3.

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

Specifically, as shown in FIG. 4, the air blowing system 2 is configured with an air blowing device 2a and a purification section 2b.

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

The purifying unit 2b is a device that purifies the air in the local space (local space SP1 or local space SP2) 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 discharged from the exhaust port 5 to the local space (local space SP1 or local space SP2) and the air flow discharged from the exhaust port 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 exhaust port 5 as an air flow by the blower device 2a. The purifier 2b may be a space sterilization and deodorization device that generates hypochlorous acid water by electrolysis or the like and mixes the hypochlorous acid into the airflow generated by the blower 2a.

Next, we will explain the airflow in the airflow environment system 1 with reference to Figure 3.

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 airflow operation of the airflow 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 in the second direction (the direction from the back side to the front side of the seat section 3) along the curved surface 4a. 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 the 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 plays a role in suppressing the air flow A3 that tries to flow out from the open surface X side of the reflecting section 4 into the external space SP3.

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 an 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, forming the air curtain 8. In other words, the space between the pair of seats 3 is blocked by the air curtain 8.

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

The air flow A4 drawn 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 FIG. 1) to the external space SP3, and most of the remaining air is discharged upward again from the discharge port 5 as the air flow A1.

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). In other words, in the airflow environment system 1, in the local spaces (local spaces SP1 and SP2) in which the front side of a pair of seating parts 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, which is discharged from the discharge port 5 on the rear side of each seating part 3 and reflected by the reflecting part 4, flow back to the floor surface 10f side so as to cross between the pair of seating parts 3. As a result, in the airflow environment system 1, a local space SP1 corresponding to one seating part 3 and a local space SP1 corresponding to the other seating part 3 are separately configured within the local space of the private room unit 10.

As described above, the airflow environment system 1 according to the first embodiment provides the following advantages:

(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 the 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 into the external space SP3, an exhaust port 5 provided on each of the pair of seats 3 to discharge the remaining air purified by the purification unit 2b into 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 emitted from the outlet 5 and hit each other, and to return the air flows to the floor surface 10f side so as to cross between the pair of seats 3.

As a result, in the local space (local space SP1, local space SP2) in which the front side of the pair of seat parts 3 is an open surface X that is open to the external space SP3, an air curtain 8 is formed in which the air flow A3 that is discharged from the discharge port 5 on the back side of each seat part 3 and reflected by the reflecting part 4 flows back to the floor surface 10f side so as to cross between the pair of seat parts 3, so that the air flow can be confined within the local space (local space SP1 or local space SP2) on each seat part 3 side while suppressing the influence of the external environment (disturbance) on the air flow (air flow A1 to air flow A3) that forms the air curtain 8. At this time, the air flow A2 is collided with each other to form the air curtain 8, so the stability of the air flow is improved. In other words, it is possible to provide an air flow environment system 1 that can improve the stability of the air flow in the local space (local space SP1 or local space SP2) and suppress the air in the local space (local space SP1 or local space SP2) from flowing out into the external space SP3.

(2) In the airflow environment system 1, 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 airflow compared to air curtains in conventional airflow environment systems.

(3) In the airflow environment system 1, the reflecting unit 4 is configured as a plate-shaped reflecting plate that is curved in an arc so that it is 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.

(4) In the airflow environment system 1, a separation wall 10e is provided on the ceiling side of the open surface X to separate the local spaces (local spaces SP1 and SP2) from the external space SP3 so as to block 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 space from flowing out to the outside.

In addition, the air flow A3 that hits the separation wall 10e generates a flow toward the floor surface 10f, stabilizing the air curtain 8.

(5) In the airflow environment system 1, local spaces (local spaces SP1, SP2) are configured as box-shaped private room units 10, with the front side surfaces of a pair of seating sections 3 forming an open surface X that is open to the external space SP3. This reduces the effects of the external environment (disturbances) on the air flows (air flows A1 to A4, air curtain 8) formed within the local spaces.

(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 puts 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, further preventing the air in the local space from leaking into the external space SP3.

(Embodiment 2)
The 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). 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.

The airflow environment system 1a according to the second embodiment of the present invention will be described with reference to FIG. 5. FIG. 5 is a front view showing the airflow formed by the airflow environment system 1a according to the second embodiment of the present invention.

As shown in FIG. 5, the reflecting section 14 is installed on the wall surface 10c on the ceiling side of the private room unit 10. The reflecting section 14 is arranged 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 portion is curved in an arc so that it is convex toward the ceiling surface side. It can also be said that the reflecting section 14 is composed of two plate-shaped reflectors connected together, each curved in an arc so that it is convex toward the ceiling surface side.

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.

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 connection part (the center part of the reflecting part 14) between the curved surface 14a and the curved surface 14b of the reflecting part 4, and is released from the center part of the reflecting part 14 towards the floor surface 10f as an air curtain 8 flowing in the third direction (from the ceiling surface side towards the floor surface 10f side).

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 way as in the airflow environment system 1.

As described above, the airflow environment system 1a according to the second embodiment provides the following advantages:

(7) In the airflow environment system 1a, a pair of plate-shaped reflectors curved in an arc so as to be convex toward the ceiling surface side are provided as the reflecting section 14 corresponding to each of the air flows A1 discharged from the discharge port 5. In other words, in the airflow environment system 1a, the reflecting section 14 is configured such that the axial direction of the reflecting section 14 is approximately parallel to the wall surfaces 10a and 10c, and the curved surfaces 14a and 14b 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 air flow B1 flows along the curved reflectors and collides with each other, so that the energy loss due to the collision of the air flow B1 is suppressed and it becomes easier to flow toward the floor surface 10f side. As a result, the stability of the air flow can be further improved.

(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 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.

Referring to Figure 6, an airflow environment system 1b according to embodiment 3 of the present invention will be described. Figure 6 is an external perspective view showing the airflow formed by the airflow environment system 1b according to embodiment 3 of the present invention.

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 an outlet 5a that blows out the air flow C1 in a fourth direction (the direction indicated by the arrow indicating the air flow C1 in FIG. 4) different from the first direction of the other outlets 5. In other words, the airflow environment system 1b is provided with an outlet 5a that is provided at the end of the outlet 5 on the open surface X side and blows out the air flow C1 that is inclined in the direction opposite to the open surface X on the back side of the seat 3 so as to merge with the air flow A1 flowing along the first direction on the ceiling surface side.

Here, the air flow C1 has the role of preventing the air flow A1, which flows in 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.

As described above, the airflow environment system 1b according to the third embodiment provides the following advantages:

(8) In the airflow environment system 1b, an air outlet 5a is provided at the end of the outlet 5 on the open surface X side, and blows out an airflow C1 that is inclined in the direction opposite 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 the air in the local space (local space SP1 and local space SP2) can be prevented from flowing out into the external space SP3.

(9) In the airflow environment system 1a, the air outlet 5 is composed of multiple holes arranged along the upper part of the backrest of the seat 3, and the airflow C1 discharged from some of the holes (air outlet 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 for the inclined discharged airflow C1 to suppress the diffusion of the airflow A1 flowing out from the open surface X to the external space SP3.

(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. The rest of 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.

Referring to Figure 7, an airflow environment system 1c according to embodiment 4 of the present invention will be described. Figure 7 is an external perspective view showing the airflow formed by the airflow environment system 1c according to embodiment 4 of the present invention.

In the airflow environment system 1c, the discharge port 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 reflecting section 4 facing 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 discharge port 5 is not provided.

As described above, the airflow environment system 1c according to the fourth embodiment provides the following advantages:

(10) In the airflow environment system 1c, a region 5b where no outlet 5 is provided on the open surface X side of the seating portion 3 is provided in each of the pair of seating portions 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 rear side of the seating portion 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 portion 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 portion 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.

The present invention has been described above based on the embodiments, but the present invention is in no way limited to the above embodiments, and it can be easily imagined that various improvements and modifications are possible within the scope of the invention without departing from its spirit.

In the airflow environment system 1 according to the first embodiment, the discharge port 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 discharge port 5 may be located in the gap. This improves the design freedom of the airflow environment system 1.

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

The airflow environmental system of the present invention is useful because it can prevent contaminated air from leaking into the external space.

REFERENCE SIGNS LIST 1 Airflow environment system 1a Airflow environment system 1b Airflow environment system 1c Airflow environment system 2 Air blowing system 2a Air blowing device 2b Purification section 3 Seat section 4 Reflection section 4a Curved surface 4b Curved surface 4c Curved surface 5 Outlet 5a Outlet 5b Area 6 Inlet 7 Exhaust 8 Air curtain 10 Private room unit 10a Wall surface 10b Wall surface 10c Wall surface 10d Wall surface 10e Separation wall 10f Floor surface 14 Reflection section 14a Curved surface 14b Curved surface SP1 Local space SP2 Local space SP3 External space X Open surface A1 Air flow A2 Air flow A3 Air flow A4 Air flow B1 Air flow C1 Air flow

Claims (6)

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 side surfaces of the pair of seats being open to an external space, the 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 from 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 . 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 side surfaces of the pair of seats being open to an external space, the 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 from 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 . 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 side surfaces of the pair of seats being open to an external space, the 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 from 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. The airflow environment system according to claim 1, further comprising a purification unit that purifies the air sucked in through the air intake port. The airflow environment system according to claim 1, characterized in that the reflecting section is composed of a plate-shaped reflecting plate curved in an arc so as to be convex toward the ceiling surface. 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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