Air blowing device

Abstract

To provide a technology for suppressing, in a specific space where a plurality of persons can stay, aerosol and virus from moving between persons facing each other.SOLUTION: An intermediate nozzle 73 is disposed between a first nozzle 13a and a second nozzle 13b. The first nozzle 13a, the intermediate nozzle 73 and the second nozzle 13b extend over between a first inner panel 8a and a second inner panel 8b. A first outlet port 14a of the first nozzle 13a, an outlet port 74 of the intermediate nozzle 73 and a second outlet port 14b of the second nozzle 13b blow off the air in a same direction. The first nozzle 13a has a first closing part 80a closing a part of the first outlet port 14a. The second nozzle 13b has a second closing part 80b closing a part of the second outlet port 14b. The outlet port 74 of the intermediate nozzle 73 is not closed.SELECTED DRAWING: Figure 3

Description

[Technical field]

[0001] The present disclosure relates to a blower device, and more particularly to a blower device that blows airflow so as to block a space between users seated facing each other. [Background technology]

[0002] Recently, with the spread of the COVID-19 pandemic, reducing the risk of infection has become a social issue. When holding a meeting or conference, users often sit facing each other across a desk, and it has been pointed out that even if users wear masks, aerosols containing viruses may leak through gaps in the mask. For this reason, it has become common to install transparent partitions on the desks between users to reduce the risk of infection from aerosols. As such partitions, for example, transparent partition boards equipped with sterilization devices have been considered (for example, Patent Document 1).

[0003] [Patent Document 1] Patent Publication No. 2021-186300 Summary of the Invention [Problem to be solved by the invention]

[0004] There are small spaces such as booths and conference rooms where a small number of people can sit face-to-face. When multiple people use such small spaces together, there is a problem that they cannot feel safe because they are concerned about aerosols emitted by other users.

[0005] The present disclosure has been made to solve the above-mentioned problems, and aims to provide technology for suppressing the transfer of aerosols and viruses between people facing each other in a specific space where multiple people can stay. [Means for solving the problem]

[0006] In order to solve the above problems, a blower device according to an embodiment of the present disclosure is a blower device including a first blower, a second blower, a first nozzle, an intermediate nozzle, and a second nozzle, the intermediate nozzle being disposed between the first nozzle and the second nozzle, the first nozzle, the intermediate nozzle, and the second nozzle extending between a first surface and a second surface that are different from each other, the air from the first blower being conveyed from the first surface to each of the first nozzle, the intermediate nozzle, and the second nozzle, the air from the second blower being conveyed from the second surface to each of the first nozzle, the intermediate nozzle, and the second nozzle, each of which has an outlet that blows out air in the same direction. Each of the first nozzle and the second nozzle has a blocking portion that blocks a part of the outlet. The outlet of the intermediate nozzle is not blocked in a portion adjacent to the blocking portion. Effect of the Invention

[0007] According to the present disclosure, it is possible to suppress the transfer of aerosols and viruses between people facing each other in a specific space where multiple people can stay. [Brief description of the drawings]

[0008] [Figure 1] 1 is a perspective view showing a specific space in which a blower device according to an embodiment of the present invention is installed. [Diagram 2] 1 is a perspective view showing a specific space in which a blower device according to an embodiment of the present invention is installed. [Diagram 3] 3(a) and 3(b) are top views showing a specific space in which the blower device of FIG. 2 is installed. [Figure 4] FIG. 4 is a diagram showing the length of the occlusion portion in FIG. [Diagram 5] 3 is a partial cross-sectional view showing the flow of an air current generated by the blower device of FIG. 2. [Figure 6] 6(a) and 6(b) are side views showing the flow of the air current generated by the blower device of FIG. [Figure 7] 7(a)-(b) are front views showing the flow of the air current generated by the blower device of FIG. [Figure 8]3 is a top view showing the flow of an air current generated by the blower device of FIG. 2. [Figure 9] 9(a) to 9(c) are top views showing a specific space in which the air blowing devices according to the first to third modifications are installed. [Figure 10] FIG. 11 is a perspective view showing a specific space in which a blower device according to a fourth modified example is installed. [Figure 11] FIG. 13 is a perspective view showing a specific space in which a blower device according to a fifth modified example is installed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0009] The examples described below each show a preferred specific example of the present disclosure. Therefore, the numerical values, shapes, materials, components, the arrangement and connection of the components, as well as the steps (processes) and the order of the steps shown in the following examples are merely examples and are not intended to limit the present disclosure. Therefore, among the components in the following examples, those components that are not described in the independent claims showing the highest concept of the present disclosure are described as optional components. In addition, in each figure, the same reference numerals are given to substantially the same configurations, and duplicated descriptions are omitted or simplified.

[0010] Fig. 1 is a perspective view showing a specific space 2 in which a blower 1 is installed. More specifically, Fig. 1 is a perspective view showing the structure of the specific space 2 in which the blower 1 is installed. The specific space 2 is an equipment unit having a space (living space 3) in which at least one person can stay, and in which an air outlet of the blower 1 is arranged on the ceiling surface side. In this example, the specific space 2 is a conference room for multiple people to hold meetings or business negotiations, and can also be called a meeting booth.

[0011] Specifically, the specific space 2 is a rectangular housing, and includes a floorboard 5, a first side panel 6a, a second side panel 6b, a third side panel 6c, and a fourth side panel 6d collectively referred to as side panels 6, a top board 7, a first inner panel 8a and a second inner panel 8b collectively referred to as inner panels 8, four casters 9, two doors 10, a first air intake port 16a, a second air intake port 16b collectively referred to as air intake port 16, and an exhaust port 18. Inside the specific space 2, a living space 3, and a first hollow space 4a and a second hollow space 4b collectively referred to as hollow space 4 are provided.

[0012] The floorboard 5 is a rectangular board material that is placed on the floor surface side of the specific space 2, and is provided with an air intake port 16 and an exhaust port 18.

[0013] The side panels 6 are made up of four rectangular plate materials, a first side panel 6a, a second side panel 6b, a third side panel 6c, and a fourth side panel 6d, and are erected vertically upward from the four outer periphery edges of the floorboard 5. The third side panel 6c is a side panel 6 provided with two doors 10, and the first side panel 6a and the second side panel 6b are connected to both ends of the third side panel 6c. The fourth side panel 6d is a side panel 6 arranged in a position opposite the third side panel 6c, and the first side panel 6a and the second side panel 6b are also connected to both ends of the fourth side panel 6d. The first side panel 6a and the second side panel 6b are arranged in positions opposite each other.

[0014] The top board 7 is a rectangular board that covers the opening formed by the erection of the side panel 6. The top board 7 is provided above the floor board 5, and corresponds to the ceiling surface of the specific space 2 when the floor board 5 is the floor surface of the specific space 2.

[0015] The inner panel 8 includes a first inner panel 8a and a second inner panel 8b. The inner panel 8 is a plate material that divides the specific space 2 into a living space 3 where a user stays and a hollow space 4 that serves as a ventilation path for the blower device 1 described later, and is installed parallel to the first side panel 6a and the second side panel 6b. The first inner panel 8a is provided on the floor board 5 and positioned on the first side panel 6a side, and defines a first hollow space 4a within the specific space 2. The second inner panel 8b is provided on the floor board 5 and positioned on the second side panel 6b side, and defines a second hollow space 4b within the specific space 2.

[0016] The living space 3 is a space where users who use the specific space 2 can enter, exit and stay. More specifically, the living space 3 is composed of a floorboard 5, a third side panel 6c, a fourth side panel 6d, a top board 7, a first inner panel 8a, a second inner panel 8b and two doors 10. When the surface of the first inner panel 8a facing the living space 3 is called the "first surface", the surface of the second inner panel 8b facing the living space 3 is called the "second surface".

[0017] The hollow space 4 communicates with the living space 3, and is a space in which the ventilation passage of the blower device 1 and the blower 15 are installed. The hollow space 4 has a first hollow space 4a and a second hollow space 4b. The first hollow space 4a is constituted by a floor board 5, a first side panel 6a, a third side panel 6c, a fourth side panel 6d, a top board 7, and a first inner panel 8a, and the first blower 15a is installed. Here, the first hollow space 4a is constituted by having a space protruding in the lower part by forming the first inner panel 8a in a stepped shape. The second hollow space 4b is constituted by a floor board 5, a second side panel 6b, a third side panel 6c, a fourth side panel 6d, a top board 7, and a second inner panel 8b, and the second blower 15b is installed. Here, the second hollow space 4b is configured to have a space protruding from the lower part by configuring the second inner panel 8b in a stepped shape. Here, the inner panel is configured in a stepped shape, but the shape is not important as long as the blower 15 can be placed in the hollow space and the air blown from the blower 15 can be blown into the hollow space.

[0018] The air intake port 16 is a square opening for supplying air from outside the specific space 2 to the living space 3, and is provided below the air intake surface of the blower 15 of the floorboard 5. The air intake port 16 draws in air from outside the specific space 2 when the blower 15 described below operates. Note that the air intake port 16 is rectangular, but is not limited to this, and may be a polygon other than a rectangle or a circle. In the embodiment, the air intake port 16 is provided in four locations so as to be located directly below the air intake surface of the blower 15, but there is no problem as long as the blower 15 is installed so that air from outside the specific space 2 is drawn in.

[0019] More specifically, the air intake 16 has a first air intake 16a and a second air intake 16b. The first air intake 16a is provided on the floorboard 5 in the first hollow space 4a and is connected to the air intake surface of the first fan 15a. The first fan 15a draws in air from the first air intake 16a. The second air intake 16b is provided on the floorboard 5 in the second hollow space 4b and is connected to the air intake surface of the second fan 15b. The second fan 15b draws in air from the second air intake 16b.

[0020] The casters 9 are fixed legs that lift the specific space 2 and enable it to be moved. The casters 9 are provided at each of the four corners on the lower surface side of the floorboard 5. In this embodiment, the casters are provided at four locations, but the number of casters may be increased or decreased depending on the load capacity.

[0021] The doors 10 are tools used by users staying in the living space 3 when entering and exiting the living space 3. Two doors 10 are provided on the third side panel 6c. The number of doors is not limited to two, and may be one. Alternatively, the doors may be provided on the fourth side panel 6d side so that users can enter and exit the living space 3 from both the third side panel 6c side and the fourth side panel 6d side.

[0022] FIG. 2 is a perspective view showing the specific space 2 in which the blower 1 is installed. More specifically, FIG. 2 is a see-through perspective view showing the internal structure of the specific space 2 in which the blower 1 is installed. The blower 1 is a device that blows out air flowing from the top board 7 side toward the floor board 5 side in the living space 3 in the specific space 2. The airflow formed by the air blown out from the blower 1 will be described later. Specifically, the blower 1 has a first nozzle 13a, a second nozzle 13b, an intermediate nozzle 73, a first blower 15a, and a second blower 15b. The number of nozzles 13 in the blower 1 is not limited to "2", the number of intermediate nozzles 73 is not limited to "1", and the number of blowers 15 is not limited to "2".

[0023] The blower 15 is disposed inside the hollow space 4 and generates an airflow from the air inlet 16 through the hollow space 4 toward the first nozzle 13a, the second nozzle 13b, and the intermediate nozzle 73. The blower 15 may be a known turbo machine such as a centrifugal blower. The number of blowers 15 installed varies depending on the specifications of the air blowing volume, but in this embodiment, two blowers, a first blower 15a and a second blower 15b, are installed.

[0024] The first fan 15a generates an air flow from the first air supply port 16a to the first nozzle 13a, the second nozzle 13b, and the intermediate nozzle 73 inside the first hollow space 4a, and supplies the air sucked from the first air supply port 16a to the first nozzle 13a, the second nozzle 13b, and the intermediate nozzle 73 through the first hollow space 4a. The second fan 15b generates an air flow from the second air supply port 16b to the first nozzle 13a, the second nozzle 13b, and the intermediate nozzle 73 inside the second hollow space 4b, and supplies the air sucked from the second air supply port 16b to the first nozzle 13a, the second nozzle 13b, and the intermediate nozzle 73 through the first hollow space 4a.

[0025] Here, the first fan 15a and the second fan 15b may each have a mechanism for adjusting the air volume (air supply volume). Although details will be described later, in this embodiment, the air volume of the first fan 15a and the air volume of the second fan 15b are controlled to be equal.

[0026] The first nozzle 13a, the intermediate nozzle 73, and the second nozzle b extend between the first inner panel 8a (first surface) and the second inner panel 8b (second surface). The intermediate nozzle 73 is disposed between the first nozzle 13a and the second nozzle 13b. This configuration can also be said to be such that the first inner panel 8a is provided between each of the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b, and the first side panel 6a. The second inner panel 8b can also be said to be provided between each of the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b, and the second side panel 6b.

[0027] Each of the nozzle 13 and the intermediate nozzle 73 is a kind of rectangular ventilation pipe into which the air transported by the blower 15 flows. The nozzle 13 and the intermediate nozzle 73 are not limited to a rectangular shape as long as they are cylindrical and serve as a passage for the air, and may be, for example, elliptical. The air from the first blower 15a is transported from the first inner panel 8a (first surface) side to the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b through the first hollow space 4a. The air from the second blower 15b is transported from the second inner panel 8b (second surface) side to the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b through the second hollow space 4b. In each of the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b, the air transported from both sides collides at the center.

[0028] A desk 11, a first chair 12a, and a second chair 12b are arranged in the living space 3. The desk 11 is a tool on which a user staying in the living space 3 can place a computer or documents to work. The desk 11 is fixed so as to abut against the third side panel 6c and the fourth side panel 6d. The desk 11 has a desk opening 17 in its center. The desk 11 may be freestanding or may have legs that can stand on its own.

[0029] The desk opening 17 is formed across the first nozzle 13a and the second nozzle 13b described later, and penetrates the center of the desk 11 from the top board 7 side to the floor board 5 side. More specifically, the desk opening 17 is a square-shaped opening for blowing airflows blown out from the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b toward the exhaust port 18. The desk opening 17 is rectangular, but is not limited thereto, and may be a polygon other than a rectangle or an ellipse. Also, a punching metal may be installed on the desk opening 17. This makes it possible to prevent pens and the like from being dropped into the desk opening 17.

[0030] The chairs 12 are seated by users staying in the living space 3. The chairs 12 include a first chair 12a and a second chair 12b so that the users can face each other across the desk 11. The first chair 12a is arranged so that its backrest abuts the first inner panel 8a. That is, the first chair 12a is placed on the first inner panel 8a facing the desk 11. The second chair 12b is arranged so that its backrest abuts the second inner panel 8b. That is, the second chair 12b is placed on the second inner panel 8b facing the desk 11.

[0031] The exhaust outlet 18 is a square-shaped opening for exhausting air from the living space 3 to the outside. The exhaust outlet 18 extends from the third side panel 6c toward the fourth side panel 6d, and is provided in the floorboard 5 directly below the desk opening 17 in the vertical direction. This also means that the desk opening 17 is provided directly above the exhaust outlet 18. The exhaust outlet 18 exhausts air from the living space 3 by operating the blower 15. Although the exhaust outlet 18 is rectangular, it is not limited to this and may be a polygon other than a rectangle or an ellipse.

[0032] 3(a)-(b) are top views showing the specific space 2 in which the blower 1 is installed. FIG. 3(a) shows the configuration of the blower 1 when viewed from the top board 7 toward the floor board 5. As shown in FIG. 3(a) and FIG. 2, the nozzle 13 and the intermediate nozzle 73 are horizontally extended from above the first inner panel 8a to the second inner panel 8b. At this time, the nozzle 13 and the intermediate nozzle 73 are connected to the first hollow space 4a and the second hollow space 4b, respectively, on the side where the first inner panel 8a and the second inner panel 8b are connected to each other. In addition, the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b are arranged in parallel from one end of the first inner panel 8a toward one end of the second inner panel 8b.

[0033] Here, "above the first inner panel 8a" means a position higher than the head of a standing human body, and specifically indicates a position 200 cm or higher above the floor board 5 in the living space 3. Also, "extending horizontally" indicates standing in a direction parallel to the floor board 5, which is the floor surface, and the top board 7, which is the ceiling surface, in the living space 3.

[0034] FIG. 3(b) shows a configuration in which the upper surfaces of the first nozzle 13a, the second nozzle 13b, and the intermediate nozzle 73 in FIG. 3(a) are seen through. This can also be said to show the configuration of the lower surfaces of the first nozzle 13a, the second nozzle 13b, and the intermediate nozzle 73. As shown in FIG. 3(b), a first air outlet 14a is provided on the lower surface of the first nozzle 13a. The first air outlet 14a is a slit-shaped opening that is long in the direction in which the first nozzle 13a extends. In addition, a part of the first air outlet 14a is blocked by a first blocking portion 80a. The first blocking portion 80a is provided, for example, in the central portion between the first inner panel 8a (first surface) and the second inner panel 8b (second surface). Therefore, the first air outlet 14a is opened on both ends sandwiching the first blocking portion 80a.

[0035] A second air outlet 14b is provided on the lower surface of the second nozzle 13b. The second air outlet 14b is a slit-shaped opening that is long in the direction in which the second nozzle 13b extends. A part of the second air outlet 14b is blocked by a second blocking portion 80b. The second blocking portion 80b is provided, for example, in the central portion between the first inner panel 8a (first surface) and the second inner panel 8b (second surface). Therefore, the second air outlet 14b is open on both ends of the second blocking portion 80b. The first air outlet 14a and the second air outlet 14b are collectively referred to as the air outlet 14, and the first blocking portion 80a and the second blocking portion 80b are collectively referred to as the blocking portion 80.

[0036] An air outlet 74 is provided on the lower surface of the intermediate nozzle 73. The air outlet 74 is a slit-shaped opening that is long in the extension direction of the intermediate nozzle 73. The intermediate nozzle 73 is not blocked in a portion adjacent to the blocking portion 80, that is, in the central portion between the first inner panel 8a (first surface) and the second inner panel 8b (second surface).

[0037] The first air outlet 14a, the second air outlet 14b, and the air outlet 74 are provided facing downward. The first air outlet 14a, the second air outlet 14b, and the air outlet 74 blow out the air that has flowed into the nozzle 13 or the intermediate nozzle 73 and flows from the top board 7 toward the floor board 5. In other words, the first air outlet 14a, the second air outlet 14b, and the air outlet 74 blow out the air in the same direction.

[0038] Here, "facing downward" refers to facing directly to the floorboard 5 in the living space 3. That is, the air outlet 14 is provided on the surface that faces the floorboard 5 among the surfaces that form the rectangular nozzle 13. The air outlet 14 is also a rectangular opening, and is formed so that the long side is in the upright direction and the short side is in the direction parallel to the inner panel 8. One air outlet 14 is provided for each nozzle 13. The air outlets 14 belonging to each nozzle 13 are arranged on the same plane when a certain horizontal plane is imagined. That is, in the living space 3, the air outlets 14 belonging to each nozzle 13 are arranged at the same height from the floorboard 5. The air outlet 74 is also provided in the same manner as the air outlet 14.

[0039] The exhaust port 18 exhausts the air blown out from the air outlet 14 and the air outlet 74. When the floorboard 5 is viewed in a plan view from above, the exhaust port 18 is provided so as to straddle the first blocking portion 80a of the first nozzle 13a and the second blocking portion 80b of the second nozzle 13b.

[0040] The length of the blocking portion 80 will be described below with reference to FIG. 4. FIG. 4 shows the length of the blocking portion 80. In FIG. 4, the combination of the air outlet 14 and the blocking portion 80 is called an "opening". The horizontal axis of FIG. 4 shows the length of the blocking portion 80 relative to the entire opening, and the vertical axis shows the aerosol blocking rate to the opposite side (at this time, the distance between the facing users is set to at least 560 cm). From this, if the blocking portion 80 blocks about 25% to 75% of the entire air outlet, a blocking rate of 95% or more of the emitted aerosol can be ensured. Therefore, it is desirable that the blocking portion 80 is about 25% to 75% of the entire air outlet. In addition, the air outlet 14 and the air outlet 74 are not limited to a square shape, and may be, for example, a round hole or an intermittent square opening.

[0041] Next, the surface airflow AF31 generated by the blower 1 will be described with reference to Fig. 5. Fig. 5 is a partial cross-sectional view showing the flow of the airflow generated by the blower 1. The operation of the blower 1 is started by operating the first blower 15a and the second blower 15b. When the first blower 15a and the second blower 15b are operated, air outside the specific space 2 is sucked in through the first air supply port 16a and the second air supply port 16b, and the blown airflow AF15 is blown out from each of the first blowing port 14a of the first nozzle 13a, the second blowing port 14b of the second nozzle 13b, and the blowing port 74 of the intermediate nozzle 73.

[0042] When the discharged airflow AF15 is blown out into the living space 3, the air in the space around the discharged airflow AF15 is attracted to the discharged airflow AF15, and a negative pressure region S1 is generated in each of the space between the first nozzle 13a and the intermediate nozzle 73 and the space between the intermediate nozzle 73 and the second nozzle 13b. Here, negative pressure (also called negative pressure) refers to a state in which the air pressure is lower than the surroundings. In other words, the negative pressure region S1 is a region where the air pressure is lower than the surroundings.

[0043] When the negative pressure region S1 is generated, a force acts to eliminate the negative pressure, and an air flow (induced airflow AF21) for eliminating the negative pressure region S1 is generated from the space around the nozzle 13 and the intermediate nozzle 73. In addition, the space between the first nozzle 13a and the intermediate nozzle 73, through which the induced airflow AF21 flows, and the space between the intermediate nozzle 73 and the second nozzle 13b, are each referred to as an induced air passage.

[0044] In a limited space such as the living space 3, the air in the space around the induced airflow AF21 (the space near the inlet of the induced airflow duct) is drawn in by the induced airflow AF21, and a negative pressure area S2 is generated in the space between the nozzle 13 and the top board 7 and in the space between the intermediate nozzle 73 and the top board 7. This generates an air flow (return airflow AF41) for eliminating the negative pressure area S2. In other words, a return path is formed that serves as a path for introducing air induced into the induced airflow duct via the negative pressure area S2, and the air is induced into the induced airflow duct.

[0045] The blown airflow AF15 and the induced airflow AF21 join together in the living space 3 to form a surface airflow AF31. The surface airflow AF31 moves aerosols and viruses from the entire living space 3 from the top board 7 to the floor board 5 side, enhancing the effect of discharging them to the outside of the specific space 2 through the exhaust port 18 shown in Fig. 2, and more reliably suppressing the movement of aerosols and viruses between users facing each other.

[0046] 6(a)-(b) are side views showing the flow of the airflow generated by the blower 1. FIG. 6(a) is a cross-sectional view of the specific space 2 at the position where the intermediate nozzle 73 is disposed. When the blower 15 starts operating, the air outside the specific space 2 becomes an airflow AF12 and is sucked in from the air supply port 16. The air sucked in from the air supply port 16 (airflow AF12) is transported inside the hollow space 4 as an airflow AF13, and circulates inside from both sides of the intermediate nozzle 73 as an airflow AF14. Here, the airflow AF14 is supplied at the same air volume from both ends of the nozzle 13 and the intermediate nozzle 73.

[0047] The air (airflow AF14) that has flowed into the intermediate nozzle 73 collides with the central portion S3 and is blown out from the air outlet 74 downward, that is, toward the floorboard 5, as the blown airflow AF15. At this time, the blown airflow AF15 is blown out at a constant wind speed in all the regions R1. The blown airflow AF15 is combined with the above-mentioned induced airflow AF21 and flows toward the floorboard 5 in the living space 3 as the above-mentioned surface airflow AF31. In other words, the surface airflow AF31 is a highly linear airflow that blows down onto the chair 12. The surface airflow AF31 toward the floorboard 5 is reflected by the chair 12 and flows as a return airflow AF41 toward the top board 7 along the first inner panel 8a or the second inner panel 8b. The return airflow AF41 is an airflow for stably forming the surface airflow AF31 in the living space 3.

[0048] 6(b) is a cross-sectional view of the specific space 2 at the position where the first nozzle 13a is disposed. The position where the second chair 12b is disposed is also shown. When the blower 15 starts operating, the air outside the specific space 2 becomes an airflow AF12 and is sucked in from the air supply port 16. The air sucked in from the air supply port 16 (airflow AF12) is transported inside the hollow space 4 as an airflow AF13 and circulates inside from both sides of the first nozzle 13a as an airflow AF14.

[0049] The air (airflow AF14) that has flowed into the first nozzle 13a collides with each other at the central portion S3, and is blown out from the two first air outlets 14a downward, that is, toward the floorboard 5, as an outlet airflow AF15. Here, by providing the first blocking portion 80a, the total length of the two first air outlets 14a becomes shorter than the length of the air outlet 74. Therefore, the wind pressure of the outlet airflow AF15 blown out from the two first air outlets 14a is higher than the wind pressure of the outlet airflow AF15 blown out from the air outlet 74. As a result, the wind speed of the outlet airflow AF15 in the region R2 is higher than the wind speed of the outlet airflow AF15 in the above-mentioned region R1.

[0050] Due to the difference between the wind speed of the blown airflow AF15 in the region R2 and the wind speed of the blown airflow AF15 in the region R1, the blown airflow AF15 in the region R2 is blown below the intermediate nozzle 73 as the blocked airflow AF33 shown in FIG. 6(a). To be more specific, the region R3 in FIG. 6(a) is the portion where the first blocking portion 80a is provided in FIG. 6(b). The blocked airflow AF33 flows from the region R2 to the lower portion of the region R3 and circulates toward the desk 11. The blocked airflow AF33 flows from the top board 7 toward the floor board 5 between the first chair 12a and the second chair 12b, thereby improving the blocking of aerosols for the user sitting in the first chair 12a and the user sitting in the second chair 12b.

[0051] The blocking airflow AF33 heading toward the floorboard 5 passes through the desk opening 17 as a converging airflow AF35, and is then exhausted to the outside of the specific space 2 from the exhaust port 18. In other words, the converging airflow AF35 is an airflow for discharging the aerosols that have been lowered by the blocking airflow AF33.

[0052] 7(a)-(b) are front views showing the flow of the airflow generated by the blower 1. FIG. 7(a) is a cross-sectional view taken along line A-A' in FIG. 6(a) and line B-B' in FIG. 6(b), that is, a vertical cross-sectional view taken along line B-B' in FIG. 6(b). An outlet airflow AF15 is blown downward from the first outlet 14a of the first nozzle 13a, an outlet airflow AF15 is blown downward from the outlet 74 of the intermediate nozzle 73, and an outlet airflow AF15 is blown downward from the second outlet 14b of the second nozzle 13b. Based on these outlet airflows AF15, a surface airflow AF31 is formed near the head of the second user 100b. In addition, the surface airflow AF31 is reflected by the second chair 12b, forming a return airflow AF41 that flows upward.

[0053] FIG. 7(b) is a cross-sectional view taken along line CC' in FIG. 6(a) and line D-D' in FIG. 6(b), that is, a cross-sectional view taken along the vertical direction on the desk 11. The outlet 74 of the intermediate nozzle 73 blows out an outlet airflow AF15 downward. On the other hand, the first nozzle 13a is provided with a first blocking portion 80a, and the second nozzle 13b is provided with a second blocking portion 80b, so that the outlet airflow AF15 is not blown out from these nozzles. As described above, the outlet airflow AF15 in the region R2 moves downward in front of the second user 100b as the blocked airflow AF33. The blocked airflow AF33 travels as AF35 from the desk 11 toward the floorboard 5 and is discharged to the outside from the exhaust port 18.

[0054] FIG. 8 is a top view showing the flow of the airflow generated by the blower device 1. A highly straight surface airflow AF31 is formed toward the top of the chair 12. In addition, a return airflow AF41 is formed at the back and sides of the chair 12, returning to the top board 7. The area where the return airflow AF41 flows is shown as a return airflow area T1. A blocking airflow AF33 that blows strongly down toward the floor board 5 is formed near the face of the user 100 on the chair 12. The area where the blocking airflow AF33 flows is shown as a blocking airflow area T2. A converging airflow AF35 (not shown) is formed in the center of the living space 3, blowing down toward the center toward the floor board 5 and being discharged from the exhaust port 18. The area where the converging airflow AF35 flows is shown as a converging airflow area T3.

[0055] (Modification) In the following, modifications of the embodiments described above will be described as Modification 1 to Modification 5. In doing so, the contents already described in the embodiments will be appropriately omitted, and differences from the embodiments will be mainly described.

[0056] 9(a)-(c) are top views showing a specific space 2 in which a blower 1 according to Modifications 1 to 3 is installed. These are shown in the same manner as in FIG. 3(b). FIG. 9(a) shows the configuration of a blower 1 according to Modification 1. In the conventional blower 1, one intermediate nozzle 73 is arranged between the first nozzle 13a and the second nozzle 13b. On the other hand, as long as the nozzles at both ends, such as the first nozzle 13a and the second nozzle 13b, are provided with the blocking portion 80, the number of intermediate nozzles 73 arranged between them is not limited to "1" and may be multiple. In FIG. 9(a), three intermediate nozzles 73 are arranged between the first nozzle 13a and the second nozzle 13b.

[0057] FIG. 9(b) shows the configuration of the blower 1 according to the modified example 2. In the conventional blower 1, one each of the first nozzle 13a and the second nozzle 13b is provided. Meanwhile, the number of the first nozzle 13a and the second nozzle 13b is not limited to "1" and may be more than one. In FIG. 9(a), one intermediate nozzle 73 is disposed between two first nozzles 13a and two second nozzles 13b. Also, the number of the first nozzles 13a and the number of the second nozzles 13b may be different. Furthermore, the modified example 1 and the modified example 2 may be combined, and multiple intermediate nozzles 73 may be disposed between multiple first nozzles 13a and multiple second nozzles 13b.

[0058] FIG. 9(c) shows the configuration of the blower 1 according to the third modification. In the conventional blower 1, the blocking portion 80 is provided in the center of the nozzle 13, that is, in the center between the first inner panel 8a and the second inner panel 8b. On the other hand, the blocking portion 80 may be provided in a biased portion of the nozzle 13, not in the center. In FIG. 9(c), the blocking portion 80 is provided in a position closer to the second chair 12b than to the first chair 12a. In other words, the blocking portion 80 may be provided between the first user 100a sitting in the first chair 12a and the second user 100b sitting in the second chair 12b.

[0059] 10 is a perspective view showing a specific space 2 in which a blower device 1 according to Modification 4 is installed. The blower device 1 according to the present embodiment is provided in the specific space 2 with a pair of chairs 12 on which users 100 can sit facing each other with a desk 11 in between, but the blower device 1 according to Modification 4 is assumed to be used with the user 100 standing. Therefore, the blower device 1 according to Modification 4 does not have the chairs 12 and is provided with a desk 11 that the user 100 can face while standing. Other than this, the configuration and control method of the blower device 1 according to Modification 4 are the same as those of the blower device 1 according to the embodiment.

[0060] The desk 11 is a tool on which a user 100 (not shown) staying in the living space 3 can place a computer or documents and work while standing. The desk 11 is fixed so as to abut against the third side panel 6c and the fourth side panel 6d. The desk 11 has a desk opening 17 in the center. The desk 11 may be freestanding or may have self-supporting legs.

[0061] The air supply port 16 is a square opening for supplying air from outside the specific space 2 to the living space 3, and is provided in the side panels 6 (the first side panel 6a and the second side panel 6b). The air supply port 16 draws in air from outside the specific space 2 when the blower 15 operates. More specifically, the air supply port 16 has a first air supply port 16a and a second air supply port 16b.

[0062] The first air supply port 16a is provided in the first side panel 6a in the first hollow space 4a. When the first fan 15a is operated, the first air supply port 16a draws air from the outside of the specific space 2 into the first hollow space 4a.

[0063] The second air supply port 16b is provided in the second hollow space 4b in the second side panel 6b. When the second fan 15b is operated, the second air supply port 16b draws air from the outside of the specific space 2 into the second hollow space 4b.

[0064] The exhaust port 18 is a square opening for exhausting air from the living space 3 to the outside. The exhaust port 18 extends from the third side panel 6c toward the fourth side panel 6d, and is provided on the floorboard 5 directly below the desk opening 17 in the vertical direction. In other words, the exhaust port 18 is provided on a different surface from the first air supply port 16a and the second air supply port 16b. The exhaust port 18 exhausts air from the living space 3 by operating the blower 15. Although the exhaust port 18 is rectangular, the shape is not limited thereto, and it may be a polygon other than a rectangle or an ellipse.

[0065] 11 is a perspective view showing a specific space 2 in which a blower device 1 according to Modification 5 is installed. In the blower device 1 according to this embodiment, the specific space 2 is a rectangular housing, and is a closed living space 3 composed of a floor board 5, a side panel 6, a top board 7, an inner panel 8, casters 9, a door 10, an air intake port 16, and an exhaust port 18. On the other hand, in the blower device 1 according to Modification 5, there is no wall separating the inside and outside of the living space 3, so that the living space 3 is an open space. In other words, the blower device 1 is used in an open space.

[0066] The first hollow space 4a is composed of a first bottom panel 20a, a first side panel 6a, a fifth side panel 6e, a sixth side panel 6f, a first top board 7a, and a first inner panel 8a. A first fan 15a is installed inside the first hollow space 4a. The first hollow space 4a is configured to have a predetermined space below the seat of the first chair 12a by configuring the first inner panel 8a in a stepped shape.

[0067] The second hollow space 4b is composed of a second bottom panel 20b, a second side panel 6b, a seventh side panel 6g, an eighth side panel 6h, a second top board 7b, and a second inner panel 8b. A second fan 15b is installed inside the second hollow space 4b. The second hollow space 4b is configured to have a predetermined space below the seat of the second chair 12b by configuring the second inner panel 8b in a stepped shape.

[0068] The bottom panel 20 is a rectangular plate material disposed on the lower side in the hollow space 4. The bottom panel 20 has a first bottom panel 20a and a second bottom panel 20b. The first bottom panel 20a is a panel on the bottom side that constitutes the first hollow space 4a. The second bottom panel 20b is a panel on the bottom side that constitutes the second hollow space 4b.

[0069] The first side panel 6a and the second side panel 6b are the same as before, and the fifth side panel 6e to the eighth side panel 6h are included instead of the third side panel 6c and the fourth side panel 6d. These are made of rectangular plate materials. The side panels 6 are erected vertically upward from the outer peripheral edge of the bottom panel 20 and form the side portions of the hollow space 4.

[0070] The fifth side panel 6e is a side panel 6 that constitutes the first hollow space 4a and connects the first side panel 6a and the first inner panel 8a. The sixth side panel 6f is a side panel 6 that constitutes the first hollow space 4a and is disposed opposite the fifth side panel 6e and connects the first side panel 6a and the first inner panel 8a. The first side panel 6a is a side panel 6 that constitutes the first hollow space 4a and connects the fifth side panel 6e and the sixth side panel 6f.

[0071] The seventh side panel 6g is a side panel 6 that constitutes the second hollow space 4b and connects the second side panel 6b and the second inner panel 8b. The eighth side panel 6h is a side panel 6 that constitutes the second hollow space 4b and is disposed in a position opposite the seventh side panel 6g and connects the second side panel 6b and the second inner panel 8b. The second side panel 6b is a side panel 6 that constitutes the second hollow space 4b and connects the seventh side panel 6g and the eighth side panel 6h.

[0072] The top board 7 is a rectangular plate material that covers the opening that constitutes the hollow space 4, which is formed by the side panels 6 and the inner panel 8. The top board 7 is provided above the bottom panel 20, and has a first top board 7a and a second top board 7b. The first top board 7a is an upper panel that constitutes the first hollow space 4a. The second top board 7b is an upper panel that constitutes the second hollow space 4b.

[0073] The inner panel 8 includes a first inner panel 8a and a second inner panel 8b. The inner panel 8 is a plate material that constitutes the hollow space 4 that serves as an air passage for the blower device 1, and is disposed parallel to the first side panel 6a and the second side panel 6b.

[0074] The first inner panel 8a is the inner panel 8 that constitutes the first hollow space 4a, and is placed on the first bottom panel 20a in parallel to the first side panel 6a, connecting the fifth side panel 6e and the sixth side panel 6f.

[0075] The second inner panel 8b is an inner panel 8 that constitutes the second hollow space 4b, and is placed on the second bottom panel 20b in parallel to the second side panel 6b, connecting the seventh side panel 6g and the eighth side panel 6h.

[0076] The first nozzle 13a, the intermediate nozzle 73, and the second nozzle b extend between the first inner panel 8a (first surface) and the second inner panel 8b (second surface). The intermediate nozzle 73 is disposed between the first nozzle 13a and the second nozzle 13b. This configuration is the same as in the past.

[0077] According to this embodiment, by providing the nozzle 13 with the blocking portion 80, the surface airflow AF31, the blocking airflow AF33, the converging airflow AF35, and the circulating airflow AF41 are formed, so that the movement of aerosols and viruses between people facing each other can be suppressed in a specific space where multiple people can stay. In addition, since the movement of aerosols and viruses between people facing each other is suppressed, safety and security can be provided in a small space. In addition, since the first nozzle 13a and the second nozzle 13b are each provided with a blocking portion 80, and the intermediate nozzle 73 is not provided with a blocking portion 80, the wind speed of the blown airflow AF15 from the first blowing port 14a and the second blowing port 14b can be made faster than the wind speed of the blown airflow AF15 from the blowing port 74. In addition, since the wind speed of the blown airflow AF15 from the first blowing port 14a and the second blowing port 14b is faster than the wind speed of the blown airflow AF15 from the blowing port 74, the blocking airflow AF33 can be formed.

[0078] Since the blocking portion 80 is provided in the center portion of the first inner panel 8a and the second inner panel 8b, a converging airflow AF35 can be formed in the center portion. Furthermore, the air from the first blower 15a is transported to the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b through the first hollow space 4a, so that the air can be supplied to the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b. Furthermore, the air from the second blower 15b is transported to the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b through the second hollow space 4b, so that the air can be supplied to the first nozzle 13a, the intermediate nozzle 73, and the second nozzle 13b.

[0079] Moreover, the first blower 15a draws in air from the first air supply port 16a, so that it can supply air to the first hollow space 4a. The second blower 15b draws in air from the second air supply port 16b, so that it can supply air to the second hollow space 4b. When the floorboard 5 is viewed in a plan view from above, the exhaust port 18 is provided in the floorboard 5 so as to straddle the blocking portion 80, so that the convergent airflow AF35 can be discharged from the exhaust port 18. Moreover, the desk opening 17 is provided directly above the exhaust port 18, so that the convergent airflow AF35 can be discharged from the exhaust port 18.

[0080] An outline of one aspect of the present disclosure is as follows. (Item 1) A blower (1) including a first blower (15a), a second blower (15b), a first nozzle (13a), an intermediate nozzle (73), and a second nozzle (13b), the intermediate nozzle (73) is disposed between the first nozzle (13a) and the second nozzle (13b), the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b) extend between a first surface and a second surface that are different from each other; air from the first blower (15a) is delivered from the first surface to each of the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b); the air from the second blower (15b) is delivered from the second surface to each of the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b); the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b) each have an outlet (14, 74) through which air is blown in the same direction; each of the first nozzle (13a) and the second nozzle (13b) has a blocking portion (80) that blocks a part of the air outlet (14); The air blower (1), wherein the air outlet (74) of the intermediate nozzle (73) is not blocked in a portion adjacent to the blocking portion (80).

[0081] (Item 2) The blocking portion (80) is provided in a central portion between the first surface and the second surface, Item 2. The air blower (1) according to item 1, wherein the air outlet (74) of the intermediate nozzle (73) is not blocked in a central portion between the first surface and the second surface.

[0082] (Item 3) The bag further includes a first inner panel (8a), a second inner panel (8b), a first side panel (6a), and a second side panel (6b), the first surface is a surface of the first inner panel (8a); the first inner panel (8a) is provided between each of the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b) and the first side panel (6a); A first hollow space (4a) is provided between the first inner panel (8a) and the first side panel (6a), air from the first blower (15a) is delivered to each of the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b) through the first hollow space (4a); the second surface is a surface of the second inner panel (8b); the second inner panel (8b) is provided between each of the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b) and the second side panel (6b); A second hollow space (4b) is provided between the second inner panel (8b) and the second side panel (6b), 3. The blower device (1) according to item 1 or 2, wherein air from the second blower (15b) is transported to each of the first nozzle (13a), the intermediate nozzle (73), and the second nozzle (13b) through the second hollow space (4b).

[0083] (Item 4) The first hollow space (4a) has a first air supply port (16a), The first fan (15a) draws air through the first air inlet (16a), The second hollow space (4b) has a second air supply port (16b), The air blower (1) according to item 3, wherein the second air blower (15b) draws air through the second air supply port (16b).

[0084] (Item 5) Further comprising a floor board (5); The floor board (5) has an exhaust port (18) for exhausting the air blown out from the air outlet (14, 74), The air blower (1) according to any one of items 1 to 4, wherein, when the floorboard (5) is viewed in a plan view from above, the exhaust port (18) is provided so as to straddle the closing portion (80) of the first nozzle (13a) and the closing portion (80) of the second nozzle (13b).

[0085] (Item 6) Further comprising a desk (11); The desk (11) has a desk opening (17), The air blower (1) according to item 5, wherein the desk opening (17) is provided directly above the exhaust port (18).

[0086] The present disclosure has been described above based on the embodiments. These embodiments are merely illustrative, and it will be understood by those skilled in the art that various modifications are possible in the combination of each component or each treatment process, and that such modifications are also within the scope of the present disclosure. [Explanation of symbols]

[0087] 1 blower device, 2 specific space, 3 living space, 4 hollow space, 5 floorboard, 6 side panel, 7 top board, 8 inner panel, 9 caster, 10 door, 11 desk, 12 chair, 13 nozzle, 14 outlet, 15 blower, 16 air intake, 17 desk opening, 18 exhaust, 20 bottom panel, 73 intermediate nozzle, 74 outlet, 80 blockage, 100 user.

Claims

1. A blower device including a first blower, a second blower, a first nozzle, an intermediate nozzle, and a second nozzle, the intermediate nozzle is disposed between the first nozzle and the second nozzle, the first nozzle, the intermediate nozzle, and the second nozzle extend between a first surface and a second surface that are different from each other; Air from the first blower is delivered from the first surface to each of the first nozzle, the intermediate nozzle, and the second nozzle; air from the second blower is delivered from the second surface to each of the first nozzle, the intermediate nozzle, and the second nozzle; each of the first nozzle, the intermediate nozzle, and the second nozzle has an outlet for blowing air in the same direction; Each of the first nozzle and the second nozzle has a blocking portion that blocks a part of the air outlet, A blowing device in which the air outlet of the intermediate nozzle is not blocked in a portion adjacent to the blocking portion.

2. The blocking portion is provided in a central portion between the first surface and the second surface, The blower device according to claim 1 , wherein the outlet of the intermediate nozzle is not blocked in a central portion between the first surface and the second surface.

3. The bag further includes a first inner panel, a second inner panel, a first side panel, and a second side panel, the first surface is a surface of the first inner panel; the first inner panel is provided between each of the first nozzle, the intermediate nozzle, and the second nozzle, and the first side panel; A first hollow space is provided between the first inner panel and the first side panel, Air from the first blower is delivered to each of the first nozzle, the intermediate nozzle, and the second nozzle through the first hollow space, the second surface is a surface of the second inner panel, the second inner panel is provided between each of the first nozzle, the intermediate nozzle, and the second nozzle, and the second side panel; A second hollow space is provided between the second inner panel and the second side panel, The blower device according to claim 1 , wherein air from the second blower is transported to each of the first nozzle, the intermediate nozzle, and the second nozzle through the second hollow space.

4. The first hollow space has a first air supply port, The first fan draws air through the first air supply port, The second hollow space has a second air supply port, The blower device according to claim 3 , wherein the second blower draws air through the second air supply port.

5. Further equipped with floorboards, The floor board has an exhaust port for exhausting the air blown out from the air outlet, The blower device according to claim 1 , wherein, when the floorboard is viewed in a plan view from above, the exhaust port is provided so as to straddle the closed portion of the first nozzle and the closed portion of the second nozzle.

6. More desks were provided. The desk has a desk opening, The blower device according to claim 5 , wherein the desk opening is provided directly above the exhaust port.

Images