JP7508149B1 - Indoor exhaust floor structure and indoor exhaust floor material - Google Patents

Abstract

[Problem] To provide an indoor exhaust floor structure 100, an indoor exhaust floor material 1, and a cleaning method for the indoor exhaust floor structure, which are designed to improve the installation of a system that exhausts air to an underfloor space in a room without an underfloor space. [Solution] The indoor exhaust floor structure 100 is an indoor exhaust floor structure 100 that exhausts air in the room R to the outside O, and is characterized by comprising an indoor exhaust floor material 1 having an exhaust port 11 drilled in a first main board 10f on the indoor side among a plurality of main boards that face each other at a distance and form a closed space Q, and an exhaust control unit 2 that controls exhaust of the room through the exhaust port 11 of the indoor exhaust floor material 1 and the closed space Q. The indoor exhaust floor material 1 may further have a straightening part 12 provided on the inner surface of a second main board 10b on the outdoor side among the plurality of main boards, so that a protrusion having an inclined surface whose diameter increases from the exhaust port 11 toward the depth direction Z overlaps with the exhaust port 11 when viewed in the depth direction Z. [Selected Figure] Figure 1

Description

The present invention relates to an indoor exhaust floor structure and an indoor exhaust floor material to be installed in a building.

Currently, research is being conducted into technologies that utilize spaces under floors and behind walls to exhaust air from inside buildings. In recent years, there are many highly airtight residences and facilities, such as reinforced concrete and steel frame systems, commercial facilities, and tower apartment buildings. These are buildings where many people gather, and there is growing awareness of the need for ventilation inside buildings due to the spread of infectious diseases. On the other hand, almost all ventilation methods use ventilation fans installed on the ceiling or at high places. After scattering, minute viruses and bacteria that are the focus of infectious diseases fall to the floor below and collect at the feet as a dense layer of the focus, and there is a problem that they are repeatedly scattered when people walk. For the above reasons, even in the clean environment of operating rooms in medical facilities, which are the strictest in terms of infection prevention, the CDC Guidelines for Prevention of Surgical Site Infections 1999 stipulates that ventilation measures should be "intake from the ceiling and exhaust from near the floor." For the same reason, not only is it important to prevent infections caused by viruses and bacterial flora, but house dust and other types of dust that are generated in people's living spaces also scatter and accumulate downward, causing illnesses such as asthma. Furthermore, conventional underfloor vents in buildings were designed to exhaust the space under the floor, not the indoor space. Given this current situation, there is a strong need for ventilation through exhaust from places other than the ceiling, such as floor or wall exhaust, as part of creating a healthier environment.

Patent document 1 discloses a ventilation device that draws in and exhausts air into the ceiling space, under-floor space, or behind-wall space of a building.

JP 2023-090578 A

According to the ventilation device disclosed in Patent Document 1, by utilizing the attic space, underfloor space, and space behind the walls as intake and exhaust paths, the ventilation device can be installed at low cost even in buildings where the space above the attic is narrow and there are restrictions on the layout of ducts. However, the ventilation device disclosed in Patent Document 1 does not disclose how to apply the device to rooms without underfloor space, and there is a problem in that it is not possible to improve the ease of installation of a system related to floor exhaust.

The present invention was devised in consideration of the above-mentioned problems, and its purpose is to provide an indoor exhaust floor structure, an indoor exhaust floor material, and a cleaning method for an indoor exhaust floor structure that improves the ease of installation of an indoor exhaust floor structure that can exhaust into an underfloor space in a room that does not have an underfloor space.

The indoor exhaust floor structure in the first invention is an indoor exhaust floor structure that exhausts indoor air to the outside, and is characterized in that it comprises an indoor exhaust floor material having an exhaust port drilled in a first main board on the indoor side of a plurality of main boards that are spaced apart and facing each other to form a closed space, and a straightening portion provided on the inner surface of a second main board on the outdoor side of the plurality of main boards so that a protrusion having an inclined surface that widens in diameter as it proceeds in the depth direction from the exhaust port and a side surface that rises in the depth direction from the inclined surface overlaps with the exhaust port when viewed in the depth direction, and an exhaust control portion that controls the exhaust of the room through the exhaust port of the indoor exhaust floor material and the closed space.

The indoor exhaust floor structure in the second invention is characterized in that, in the first invention, the closed space of the indoor exhaust floor material is connected to the ceiling space of an existing exhaust device of the ceiling chamber type, and the exhaust control unit controls the exhaust of the room through the exhaust port and the closed space of the indoor exhaust floor material and the ceiling space of the existing exhaust device.

The indoor exhaust floor structure of the third invention is characterized in that, in the first invention, the inclination angle of the inclined surface of the flow straightening section decreases as the inclination angle approaches the depth direction from the exhaust port of the main plate on the outdoor side.

The indoor exhaust floor structure of the fourth invention is characterized in that, in the first invention, the straightening section is detachable from the second main plate and can pass through the opening of the exhaust port.

The indoor exhaust floor structure in the fifth invention is the same as the first invention, in that the airflow straightening section is integral with the second main plate.

The indoor exhaust floor material of the sixth invention is an indoor exhaust floor material for exhausting indoor air to the outside, characterized in that it has an exhaust port drilled into a first main board on the indoor side of a plurality of main boards that are spaced apart and facing each other to form a closed space, and a straightening portion provided on the inner surface of a second main board on the outdoor side of the plurality of main boards so that a protrusion having an inclined surface that widens in diameter as it extends in the depth direction from the exhaust port and a side surface that rises in the depth direction from the inclined surface overlaps with the exhaust port when viewed in the depth direction.

According to the first to fifth aspects of the present invention, the indoor exhaust floor structure has an exhaust port drilled in the first main plate among the multiple main plates that form the closed space. Therefore, it is easy to form an underfloor space in a room that does not have an underfloor space. This improves the ease of installation of the indoor exhaust floor structure.

According to the first to fifth inventions, the exhaust control unit controls the exhaust of the indoor air through the exhaust port and the closed space. That is, a vertical laminar flow from top to bottom is formed in the indoor space. Therefore, the one-way exhaust can prevent the spread of viruses, bacteria, and the like in the room. This can improve the convenience of the indoor exhaust floor structure.
According to the first to fifth inventions, the indoor exhaust floor material has a flow straightening section provided on the inner surface of the second main plate so that the protrusion with an inclined surface overlaps with the exhaust port when viewed in the depth direction. Therefore, the exhaust air from inside the room passing through the exhaust port collides with the inclined surface, changing the exhaust direction from the depth direction to the extension direction of each main plate. This improves the exhaust efficiency of the indoor exhaust floor structure into the underfloor space.

In particular, according to the second aspect of the present invention, the closed space of the indoor exhaust floor material is connected to the ceiling space of the existing ceiling chamber type exhaust system, and the exhaust control unit controls the exhaust of the room through the exhaust port, the closed space, and the ceiling space. Therefore, there is no need to install a new duct to guide the air exhausted from the room. This further improves the ease of installation of the indoor exhaust floor structure.

In particular, according to the third aspect of the present invention, the inclination angle of the inclined surface of the flow straightening section decreases as it approaches the depth direction. Therefore, when indoor exhaust air passing through the exhaust port collides with the inclined surface, the exhaust direction is changed more gently, and turbulence is less likely to occur. This improves the efficiency of exhausting air into the underfloor space of the building. In addition, exhaust noise caused by the collision of exhaust air can be suppressed. This improves the convenience of the indoor exhaust floor structure.

In particular, according to the fourth aspect of the present invention, the airflow straightening section is detachable from the second main plate and can pass through the opening of the exhaust port. Therefore, the airflow straightening section can be newly installed or replaced in the outer layer section while the outer layer section of the indoor exhaust floor material is in place. This further improves the ease of installation of the indoor exhaust floor structure.

In particular, according to the fifth aspect of the present invention, the airflow straightening section is integral with the second main plate. This makes it possible to prevent shear displacement or peeling of the airflow straightening section caused by the exhaust air from the room passing through the exhaust port colliding with the inclined surface. This makes it possible to improve the durability of the indoor exhaust floor structure.

According to the sixth aspect of the present invention, the exhaust port is provided in the first main plate among the plurality of main plates forming the closed space. Therefore, it is possible to easily form an under-floor space in a room without an under-floor space. This improves the ease of installation of the indoor exhaust floor structure.

FIG. 1 is a schematic diagram showing an example of the configuration of an indoor exhaust floor structure in this embodiment. 2(a) and 2(b) are schematic diagrams showing an example of an exhaust method for the indoor exhaust floor structure in this embodiment. FIG. 3 is a schematic diagram showing an example of the configuration of the indoor exhaust floor structure in this embodiment. FIG. 4(a) is a schematic cross-sectional view showing an example of the vicinity of the straightening section corresponding to the A-A section in FIG. 3, FIG. 4(b) is a schematic plan view corresponding to FIG. 4(a), and FIGS. 4(c) to 4(d) are schematic plan views showing modified examples of FIG. 4(b). 5(a) to 5(c) are schematic cross-sectional views showing first to third modified examples of the flow straightening portion of FIG. 4(a). 6A to 6C are schematic cross-sectional views showing fourth to sixth modified examples of the flow straightening portion of FIG. 4A. Figure 7(a) is a schematic cross-sectional view showing a seventh modified example of the flow straightening section of Figure 4(a), Figure 7(b) is a schematic cross-sectional view corresponding to Figure 7(a), and Figure 7(c) is a schematic cross-sectional view showing a modified example of Figure 7(b). 8(a) and 8(b) are schematic cross-sectional views showing eighth and ninth modified examples of the flow rectifier portion of FIG. 4(a). FIG. 9 is a schematic diagram showing an example of the operation of the indoor exhaust floor structure in this embodiment. FIG. 10 is a schematic diagram showing a modified example of the configuration and operation of the indoor exhaust floor structure in this embodiment. 11(a) and 11(b) are schematic diagrams showing an example of a manufacturing method for the indoor exhaust floor material included in the configuration of the indoor exhaust floor structure in this embodiment. 12(a) and 12(b) are schematic diagrams showing modified examples of the configuration of the indoor exhaust floor structure in this embodiment. 13(a) and 13(b) are schematic diagrams showing an example of a method for cleaning the indoor exhaust floor structure in this embodiment.

Below, an example of an indoor exhaust floor structure 100 according to an embodiment of the present invention will be described in detail with reference to the drawings. In each figure, a first direction is designated as X, one direction perpendicular to the first direction X is designated as the second direction Y, and a direction perpendicular to each of the first direction X and the second direction Y is designated as the depth direction Z. The configurations in each figure are depicted diagrammatically for the purpose of explanation, and for example, the size of each component and the comparison of sizes between components may differ from those shown in the figures.

(Indoor exhaust floor structure 100)
An example of an indoor exhaust floor structure 100 according to this embodiment will be described with reference to FIGS. 1 to 8.

The indoor exhaust floor structure 100 is a floor structure that constitutes the indoor floor surface of a building. As shown in FIG. 1, the indoor exhaust floor structure 100 includes an indoor exhaust floor material 1 and an exhaust control unit 2. The indoor exhaust floor structure 100 exhausts, for example, air from the indoor space R to the outdoor space O through an exhaust port 11 that connects the indoor space and the underfloor space included in the indoor exhaust floor material 1 and a closed space Q that is the underfloor space. The indoor exhaust floor structure 100 can exhaust air from the indoor space R to the outdoor space O through the indoor exhaust floor material 1 and the exhaust pipe 3, for example, by the control of the exhaust control unit 2. The closed space Q is isolated from the outdoor space O, and can prevent small animals from entering from the outside. In addition, since the closed space Q is isolated from the outdoor space O, the exhaust direction is less likely to be disturbed inside, and exhaust efficiency can be improved.

The indoor exhaust floor structure 100 may be combined with an existing intake duct or the like to exhaust air from the indoor space R. In the conventional exhaust method, as shown in FIG. 2(a), for example, the air in the indoor space R is exhausted through a ventilation port installed on the ceiling, so that a vertical laminar flow of indoor air moving from bottom to top is formed, and infectious substances such as viruses and bacteria are stirred up, and there is a concern that the infection will spread. The arrows in the figure indicate the air flow. On the other hand, as shown in FIG. 2(b), for example, the indoor exhaust floor structure 100 takes in outside air from the outdoor space O through a ventilation port installed on the ceiling, and exhausts the air in the indoor space R to the outdoor space O through the closed space Q in the indoor exhaust floor material 1 and the exhaust duct, so that a vertical laminar flow of indoor air moving from bottom to top is formed, which suppresses the spread of infectious substances such as viruses and bacteria, and contributes to infection prevention.

<Indoor exhaust floor material 1>
The indoor exhaust floor material 1 is a floor material that separates the indoor space R from the outdoor space O, and constitutes at least a part of the floor that forms the indoor space R.

The indoor exhaust flooring material 1 is composed of an outer layer 10 having an enclosed space Q therein, as shown in FIG. 3, for example. The outer layer 10 includes, for example, a first main plate 10f and a second main plate 10b that face each other at a distance to form the enclosed space Q, and a first end 101 and a second end 102 that face each other at a distance to form the enclosed space Q.

Here, the closed space Q is the space under the floor. On the other hand, for example, in conventional floor exhaust, in order to install exhaust piping under the floor, it was usually time-consuming to scrape off the entire floor surface or remove most of the floor surface before installing the exhaust piping. According to the indoor exhaust floor structure 100, by exhausting the indoor space R through the closed space Q, it is possible to easily form the underfloor space without the trouble of newly excavating the floor surface, and exhaust into the underfloor space of the building can be achieved. This improves the ease of installation of the indoor exhaust floor structure 100, which can exhaust into the underfloor space.

The closed space Q of the indoor exhaust flooring 1 is connected to the outdoor space O via an opening provided at the second end 102, the exhaust pipe 3a (exhaust pipe 3), the exhaust control unit 2, and the exhaust pipe 3b (exhaust pipe 3). At this time, exhaust is performed in the closed space Q in the exhaust direction from the first end 101 toward the second end 102 by the exhaust operation performed by the exhaust control unit 2.

The shape of the indoor exhaust floor material 1 is, for example, a hollow, approximately rectangular parallelepiped shape. The dimensions of the indoor exhaust floor material 1 are, for example, a width w1 in the second direction Y of about 300 mm and a width w2 in the depth direction Z of about 22 mm. The widths w1 and w2 are designed based on, for example, the cross-sectional area (cross-sectional area perpendicular to the exhaust direction) of the closed space Q according to the exhaust capacity required for the indoor exhaust floor structure 100, and the plate thickness of the outer layer 10 according to the durability performance required for the indoor exhaust floor material 1. Note that the width w3 in the first direction X may be any length, for example, about 1 to 5 m, since the first direction X is the exhaust direction in this embodiment and the length does not directly affect the intake and exhaust capacity.

Conventional exhaust systems that use the underfloor space as an exhaust path are large, about 40 to 100 mm thick, and have the inconvenience of creating a raised area when installed in an existing room. On the other hand, the indoor exhaust floor material 1 of the present invention has a thin width w2 in the depth direction Z of about 22 mm, making it highly convenient as an indoor floor material, and by using it as an indoor floor material, the underfloor space of a building can be used as an exhaust path. Furthermore, this thinness reduces the cross-sectional area of the exhaust path, making it easier to exhaust at a faster wind speed. This improves the efficiency of exhausting into the underfloor space of a building.

The material for the indoor exhaust floor material 1 is metal, such as aluminum or stainless steel (SUS304, etc.).

<First main plate 10f>
The first main plate 10f is a plate material that is installed on the indoor space R side of the outer layer portion 10 of the indoor exhaust floor material 1. The first main plate 10f extends in a first planar direction including the first direction X and the second direction Y, for example.

The dimensions of the first main plate 10f are, for example, as shown in FIG. 4(a), a thickness w4 of approximately 4 mm.

The first main plate 10f has one or more exhaust ports 11 drilled therein, as shown in Figures 3 and 4. At this time, the indoor space R and the enclosed space Q are connected via the exhaust ports 11.

<Second main plate 10b>
The second main plate 10b is a plate material that is installed on the outdoor space O side of the outer layer portion 10 of the indoor exhaust floor material 1. The second main plate 10b extends, for example, in a first plane direction including the first direction X and the second direction Y. The second main plate 10b is, for example, parallel to the first main plate 10f.

As for the dimensions of the second main plate 10b, for example, as shown in FIG. 4(a), the thickness w5 is about 4 mm. The width of the gap between the second main plate 10b and the first main plate 10f, i.e., the width w6 in the depth direction Z of the closed space Q, is, for example, about 14 mm. In addition, among the outer layer portion 10 shown in FIG. 3, the thickness of a pair of side plates extended in the second planar direction including the first direction X and the depth direction Z, excluding each of the main plates 10f, 10b and each of the ends 101, 102, is, for example, about 4 mm each. In this case, the width of the gap between the pair of side plates, i.e., the width in the second direction Y of the closed space Q, is, for example, about 292 mm.

The second main plate 10b may have a straightening section 12 provided on its inner surface, as shown in, for example, Figures 3 and 4. For example, only one straightening section 12 is provided for each exhaust port 11. At this time, air passing between the indoor space R and the enclosed space Q collides with the straightening section 12.

<First end 101, second end 102>
The first end 101 and the second end 102 are plate members in the outer layer 10 of the indoor exhaust floor material 1 that determine the exhaust direction in the enclosed space Q. The first end 101 and the second end 102 extend in a third plane direction including, for example, the second direction Y and the depth direction Z.

In this embodiment, for example, the surfaces other than the second end 102 (including the first main plate 10f, the second main plate 10b, and the pair of side plates) are closed, and at least a part of the second end 102 is open. In addition, the closed space Q of the indoor exhaust floor material 1 is connected to the outdoor space O via, for example, the exhaust pipe 3a connected to the opening provided at the second end 102, the exhaust control unit 2, and the exhaust pipe 3b. As a result, the indoor space R is connected to the outdoor space O via the closed space Q. In addition, the exhaust direction in the closed space Q when exhausting from the indoor space R to the outdoor space O is the direction from the first end 101 to the second end 102. Note that the second end 102 may be opened entirely by not providing a plate material extended in the third plane direction.

<Exhaust port 11>
The exhaust port 11 is formed in the first main plate 10f. The exhaust port 11 connects the indoor space R and the enclosed space Q.

In this embodiment, the shape of the exhaust port 11 is described as being circular, but any shape can be used as long as it can secure an area according to the required exhaust capacity. The dimensions of the exhaust port 11 are, for example, a diameter w7 of about 100 mm, as shown in Figures 4(b) to 4(d).

As shown in FIG. 4(a), for example, the exhaust port 11 may have a filter 13 provided on the inner or outer surface of the first main plate 10f to cover the opening. The filter 13 may be, for example, a known breathable nonwoven fabric filter. By providing the filter 13, it is possible to prevent dust and debris contained in the exhaust air from blocking the exhaust path in the closed space Q when exhausting air from the indoor space R through the closed space Q to the outdoor space O.

<Rectification unit 12>
As shown in Fig. 4(a) for example, the airflow straightening section 12 is provided on the second main plate 10b on the inner surface side of the enclosed space Q. In the example of Fig. 4(a) , the airflow straightening section 12 is made of a material different from that of the second main plate 10b and is detachable from the second main plate 10b.

The flow straightening portion 12 has, for example, a top portion 120, an inclined surface 121, and a bottom portion 122. The flow straightening portion 12 is a protrusion having an inclined surface 121 whose diameter increases from the exhaust port 11 toward the depth direction Z. The flow straightening portion 12 is installed on the inner surface of the second main plate 10b, for example, with the bottom portion 122 serving as the installation surface.

In this embodiment, the shape of the rectifying section 12 is described as a cone, but any protruding shape having an inclined surface 121 may be used, such as a polygonal pyramid. Modified examples of the shape of the rectifying section 12 will be described later.

As for the dimensions of the flow straightening section 12, for example, as shown in FIG. 4(a), it is preferable that the diameter w8 of the bottom 122 is about 50 to 150 mm, and the height w9 along the depth direction Z is at least half the width w6, for example, about 11 to 22 mm.

The straightening section 12 is provided so as to overlap with the exhaust port 11 when viewed in the depth direction Z. Here, overlapping with the exhaust port 11 when viewed in the depth direction Z means that it is provided so as to be visible from the opening of the exhaust port 11 when viewed in the depth direction Z, as shown in Figures 4(b) to 4(d), for example, and includes being visible from the opening of the exhaust port 11 when the filter 13 is removed in the case where a filter 13 is installed.

In this case, the exhaust air from the indoor space R passing through the exhaust port 11 collides with the inclined surface 121, and the exhaust direction is converted from the depth direction Z to the extension direction of each main board, that is, the first plane direction including the first direction X and the second direction Y. In detail, for the indoor exhaust floor material 1 used as a floor material, the vertical laminar flow of air passing through the exhaust port 11 along the depth direction Z is converted to the exhaust direction along the inclined surface 121, and the exhaust direction is converted to a horizontal laminar flow along the first plane direction. This improves the exhaust efficiency to the underfloor space. Note that when the indoor exhaust floor material 1 is used as a wall material, the horizontal laminar flow passing through the exhaust port 11 is converted to a vertical laminar flow by colliding with the inclined surface 121.

4(b), the straightening section 12 has a diameter w8 smaller than the diameter w7 of the exhaust port 11, and is provided so that the top 120 and all of the inclined surfaces 121 overlap with the exhaust port 11 when viewed in the depth direction Z. The straightening section 12 may have a diameter w8 larger than the diameter w7 of the exhaust port 11, and is provided so that the top 120 and some of the inclined surfaces 121 overlap with the exhaust port 11 when viewed in the depth direction Z, as shown in FIG. 4(c), for example. The dashed line in FIG. 4(c) indicates a hidden inclined surface 121a that cannot be seen from the opening of the exhaust port 11 when viewed in the depth direction Z. In addition, the straightening section 12 may have a diameter w8 smaller than the diameter w7 of the exhaust port 11, and is provided so that the top 120 and some of the inclined surfaces 121 overlap with the exhaust port 11 when viewed in the depth direction Z, as shown in FIG. 4(d), for example. The diameter w8 of the flow straightening section 12 may be approximately the same length as the diameter w7 of the exhaust port 11.

<Exhaust control unit 2>
The exhaust control unit 2 controls the exhaust of the indoor space R. The exhaust control unit 2 is connected to the closed space Q of the indoor exhaust floor material 1 via, for example, the exhaust pipe 3a, and is connected to the outdoor space O via the exhaust pipe 3b. The exhaust control unit 2 can suck air from the closed space Q along the exhaust direction from the first end 101 to the second end 102, thereby sucking air from the indoor space R, and can discharge the sucked air to the outdoor space O. That is, the indoor exhaust floor structure 100 can control the exhaust of the room through the exhaust port 11 and the closed space Q via the exhaust control unit 2. That is, a vertical laminar flow from top to bottom is formed in the indoor space. Therefore, the one-way exhaust can prevent the spread of viruses, bacteria, etc. in the room. This can improve the convenience of the indoor exhaust floor structure 100.

For example, a known blower or the like is used as the exhaust control unit 2. The exhaust performance of the exhaust control unit 2 may be designed arbitrarily according to the exhaust volume required for the indoor space R, but according to "Air conditioning and environmental improvement of operating rooms (written by Kai Tetsuya, Symposium of the 35th Annual Meeting of the Japanese Society of Clinical Anesthesiology, Journal of the Japanese Society of Clinical Anesthesiology, Vol. 37 No. 3, 369-379, 2017)," it is preferable to set the ventilation rate required for ventilation inside the operating room with reference to "outside air 3 times/hr or more" and "blowout wind speed: about 0.35 m/s (vertical laminar flow type), 0.45 m/s (horizontal laminar flow type)." In addition, the opening area of the exhaust port 11 and the number of holes to be drilled may be designed according to the exhaust performance of the exhaust control unit 2 and the exhaust volume required for the indoor space R.

For example, if the volume of the indoor space R is approximately 24.3 ^m3 (width 2.7 m x depth 3.6 m x height 2.5 m) and vertical laminar exhaust is performed using the indoor exhaust floor material 1 as the floor material, the exhaust capacity required of the exhaust control unit 2 is 72.9 ^m3 /hr (24.3 ^m3 /time x 3 times/hr), which is approximately 0.020 ^m3 /s. Therefore, by designing the total area of all the openings of the exhaust ports 11 drilled in the indoor exhaust floor material 1 to be approximately 0.055 ^m2 , in other words, by drilling seven perfect circles with a diameter w7 = 100 mm, the wind speed of the vertical laminar flow when passing through the exhaust ports 11 will be approximately 0.37 m/s (0.020 ^m3/ s ÷ 0.055 ^m2 ), and the condition of "blowout wind speed: 0.35 m/s (vertical laminar flow type)" will be met. This wind speed is the wind speed inside the exhaust port 11 of the air passing through the exhaust port 11. At this time, the wind speed of the air flowing inside the enclosed space Q is approximately 71 m/s when the cross-sectional area of the enclosed space Q is approximately 0.004 ^m2 (width w6 = 0.014 m, separation width between a pair of side panels is 0.292 m).

In addition, when exhausting using an exhaust control section 2 with an exhaust capacity of 55 ^m3 /min, i.e., an exhaust capacity of about 0.917 ^m3 /s, exhaust of an indoor space R with a volume of about 1100 ^m3 (width 10 m x depth 10 m x height 11 m) can be performed 3 times/hr. In addition, the total area of the exhaust ports 11 that satisfy the wind speed of the vertical laminar flow when passing through the exhaust ports 11 of about 0.35 m/s or more is about 2.592 ^m2 , which is equivalent to about 330 perfect circles with a diameter w7 = 100 mm. In this way, the indoor exhaust floor structure 100 can also accommodate exhaust of a wide range of indoor spaces R depending on the exhaust capacity of the existing exhaust control section 2 and the area of the openings of the exhaust ports 11 and the number of them drilled.

When exhausting horizontal laminar air with an exhaust capacity of approximately 0.020 ^m3 /s using the indoor exhaust floor material 1 as the wall material, the total area of all the openings of the exhaust ports 11 drilled in the indoor exhaust floor material 1 is designed to be approximately 0.039 ^m2 , in other words, five perfect circles with a diameter w7 = 100 mm are drilled. This will result in the wind speed of the horizontal laminar air passing through the exhaust ports 11 being approximately 0.52 m/s (0.020 m3 ^/ s ÷ 0.039 ^m2 ), thereby satisfying the condition of "0.45 m/s (horizontal laminar flow type)".

<Exhaust pipe 3>
The exhaust pipe 3 is a known exhaust pipe for transporting air. The exhaust pipe 3 connects the enclosed space Q and the outdoor space O. This allows the air in the enclosed space Q to be transported to the outdoor space O.

(Modification of the indoor exhaust floor structure 100)
Modifications of the rectification unit 12 will be described below with reference to FIGS.

As shown in FIG. 5(a), the flow straightening section 12 may have an inclined surface 121 consisting of inclined surfaces 121b and 121c having different inclination angles θ (θ1, θ2) from the top 120 toward the bottom 122. The inclined surface 121b has an inclination angle θ1 with respect to the first direction X. The inclined surface 121c has an inclination angle θ2 with respect to the first direction X. In the example of FIG. 5(a), the inclination angle θ1 is greater than the inclination angle θ2.

That is, the inclination angle θ of the inclined surface 121 of the straightening section 12 decreases as it moves from the exhaust port 11 toward the depth direction Z. In this case, when exhaust air from the indoor space R passing through the exhaust port 11 collides with the inclined surface 121, the exhaust direction is changed more gently, and exhaust noise caused by the collision can be suppressed. This improves the convenience of the indoor exhaust floor structure 100.

The straightening section 12 may have a concavely curved inclined surface 121 with a smaller inclination angle θ from the top 120 to the bottom 122, as shown in FIG. 5(b), for example. In this case, the exhaust direction is changed more gently, and exhaust noise caused by collisions can be suppressed, improving the convenience of the indoor exhaust floor structure 100.

The flow straightening section 12 may have a convex curved inclined surface 121 with an increasing inclination angle θ from the top 120 to the bottom 122, as shown in FIG. 5(c), for example. In other words, the curved surface of the flow straightening section 12 has a shell structure. In this case, the force of the exhaust air from the indoor space R passing through the exhaust port 11 colliding with the inclined surface 121 can be easily dissipated, improving the durability of the flow straightening section 12. This can improve the exhaust efficiency and durability of the indoor exhaust floor structure 100.

The straightening section 12 may have an asymmetric inclined surface 121 with respect to a perpendicular line passing through the top 120, as shown in FIG. 6(a), for example. In this case, when the exhaust air from the indoor space R passing through the exhaust port 11 collides with the inclined surface 121, the exhaust direction is easily changed to a specific direction. This can further improve the efficiency of exhausting air into the space under the floor of the building.

The flow straightening section 12 may be a truncated cone with a flat cutout at the apex 120, as shown in FIG. 6(b), for example. In this case, compared to a cone or a polygonal pyramid with a point at the apex 120, it is possible to reduce the risk of a person walking on the first main plate 10f accidentally stepping on the flow straightening section 12, or of a worker being injured when grasping the flow straightening section 12 to install it. This can improve the safety and workability of the indoor exhaust floor structure 100.

As shown in FIG. 6(c), for example, the straightening section 12 may have a side surface rising along the depth direction Z between the inclined surface 121 and the bottom 122. In this case, the risk of air that has once had its exhaust direction changed flowing back along the inclined surface 121 toward the exhaust port 11 can be reduced. This can further improve the exhaust efficiency of exhaust that utilizes the space under the floor of a building.

The straightening section 12 may have a support section 4 between the bottom section 122 and the second main plate 10b, as shown in FIG. 7(a), for example. The support section 4 is made up of support sections 4a and 4b spaced apart from each other, as shown in FIG. 7(b), for example, and an air passage 40 is formed between the support sections 4a and 4b. In this case, the risk of air that has once been redirected flowing back toward the exhaust port 11 along the inclined surface 121 is reduced, while the air passage 40 is less likely to impede the flow of air toward the exhaust direction. This makes it possible to further improve the exhaust efficiency into the underfloor space of the building. Here, the width w7' of the exhaust port 11 in FIG. 7 indicates the width of the exhaust port 11 along the second direction Y for the diameter w7 of the exhaust port 11, and the width w8' of the straightening section 12 indicates the width along the second direction Y for the diameter w8 of the straightening section 12.

The support portion 4 may be formed of a single support portion 4c whose width in the second direction Y is shorter than the width w8' of the bottom portion 122. In this case, multiple air passages 40a, 40b are formed between the bottom portion 122, the support portion 4c, and the second main plate 10b. In this case, the risk of air that has once had its exhaust direction changed flowing back toward the exhaust port 11 is similarly reduced, while the flow of air toward the exhaust direction is less likely to be impeded, and the exhaust efficiency into the space under the floor of the building can be further improved.

The straightening section 12 may be integral with the second main plate 11b, as shown in Figures 8(a) to 8(b), for example. In this case, it is possible to prevent shear displacement or peeling of the straightening section 12 caused by the exhaust air from the indoor space R passing through the exhaust port 11 colliding with the inclined surface 121. This improves the durability of the indoor exhaust floor structure 100. In the example of Figure 8(a), the straightening section 12 is provided by a method in which the second main plate 10b is plastically deformed by press processing or the like. In the example of Figure 8(b), the straightening section 12 is provided by a method in which the surrounding surface of the second main plate 10b is cut out by cutting processing or the like.

(An example of the operation of the indoor exhaust floor structure 100)
Next, an example of the operation of the indoor exhaust floor structure 100 in this embodiment will be described with reference to FIG.

<Advance preparations>
In preparation for the operation of the indoor exhaust floor structure 100, the indoor exhaust floor material 1 is installed in advance in the indoor space R. At this time, the indoor exhaust floor material 1 is oriented so that the first main plate 10f in which the exhaust port 11 is drilled faces the indoor space R, and the second main plate 10b faces the outdoor space O. In addition, the closed space Q of the indoor exhaust floor material 1 is connected to the outdoor space O via the second end 102, the exhaust pipe 3a, the exhaust control unit 2, and the exhaust pipe 3b. As a result, the indoor space R is connected to the outdoor space O via the closed space Q, and the exhaust control unit 2 controls the exhaust to the outdoor space O.

<Exhaust operation>
The indoor exhaust floor structure 100 performs an exhaust operation of the indoor space R via the exhaust control unit 2. At this time, the air in the indoor space R flows in an exhaust direction f1 toward the exhaust port 11 (first step). Here, the exhaust direction f1 is, for example, the depth direction Z in FIG. 9. Also, depending on the dimensions and thickness of the exhaust port 11, the exhaust direction f1 may be a second planar direction including the first direction X and the depth direction Z, or a third planar direction including the second direction Y and the depth direction Z. At this time, the air flowing in the exhaust direction f1 may be a vertical laminar flow with respect to the indoor exhaust floor material 1.

The air then collides with the inclined surface 121 of the straightening section 12, and at least a portion of the air flows in the exhaust direction f2 along the inclined surface 121 toward the second end 102 (second step). The air then flows in the exhaust direction f3 from the first end 101 toward the second end 102 due to the suction force from the exhaust control section 2 (third step). Here, the exhaust direction f3 may be, for example, a first planar direction including the first direction X and the second direction Y in FIG. 9. At this time, the air flowing in the exhaust direction f3 may be a horizontal laminar flow based on the indoor exhaust floor material 1.

Furthermore, after the first step, at least a portion of the air that collides with the inclined surface 121 of the flow straightening section 12 may flow in the exhaust direction f4 along the inclined surface 121 toward the first end 101 (fourth step). Even in this case, the air then flows in the exhaust direction f3 from the first end 101 toward the second end 102 due to the suction force from the exhaust control section 2 (fifth step). Note that the second and fourth steps and the third and fifth steps may be performed in parallel.

Here, if the straightening section 12 is not provided, the second and fourth steps described above cannot be performed. In other words, the air in the indoor space R is converted from exhaust direction f1 to exhaust direction f3, which may cause turbulence around the exhaust port 11, reducing exhaust efficiency, or exhaust noise may be generated, reducing convenience. According to the indoor exhaust floor structure 100, since it is provided with the indoor exhaust floor material 1 having the straightening section 12, the second and fourth steps described above can be performed. This can improve exhaust efficiency and convenience.

After the third and fifth steps, the air in the indoor space R passes through the second end 102 and is exhausted to the outdoor space O via the exhaust pipe 3a, the exhaust control unit 2, and the exhaust pipe 3b.

(Modification of the operation of the indoor exhaust floor structure 100)
Next, a modified example of the operation of the indoor exhaust floor structure 100 in this embodiment will be described with reference to Fig. 10. Fig. 10 shows an example in which the indoor exhaust floor structure 100 is connected in four different arrangement methods and applied to four indoor spaces R (R1 to R4) in a building equipped with an existing exhaust device 5 of the ceiling chamber type. For convenience of explanation, the indoor exhaust floor material 1 used as a floor material in the indoor spaces R1 and R2 and the indoor exhaust floor material 1' used as a wall material in the indoor spaces R3 and R4 are given different reference numerals, but the configuration and function are the same.

The coordinate system in FIG. 10 is a global coordinate system consisting of the first horizontal direction X', the second horizontal direction Y', and the vertical direction Z' based on the building, and is different from the local coordinate system consisting of the first direction X, the second direction Y, and the depth direction Z based on the indoor exhaust floor material 1 shown in FIG. 3 to FIG. 9 and FIG. 11. The planar direction including the first horizontal direction X' and the second horizontal direction Y' is the fourth planar direction, the planar direction including the first horizontal direction X' and the vertical direction Z' is the fifth planar direction, and the planar direction including the second horizontal direction Y' and the vertical direction Z' is the sixth planar direction. In this case, the indoor exhaust floor material 1 used as a floor material in the indoor spaces R1 and R2 has, for example, the fourth planar direction parallel to the first planar direction, the fifth planar direction parallel to the second planar direction, and the sixth planar direction parallel to the third planar direction. In addition, the indoor exhaust floor material 1' used as a wall material in the indoor spaces R3 and R4 has a fourth plane direction parallel to the third plane direction, a fifth plane direction parallel to the second plane direction, and a sixth plane direction parallel to the first plane direction, for example.

<Advance preparations>
The indoor exhaust floor structure 100 may further include an existing exhaust device 5, as shown in Fig. 10, for example. The existing exhaust device 5 has a ceiling chamber 51, an exhaust duct 52, and an existing exhaust port 53. The internal space of the exhaust duct 52 is connected to, for example, one or more ceiling spaces in the ceiling chamber 51. The ceiling space in the ceiling chamber 51 is connected to, for example, indoor spaces R1 to R4 via one or more existing exhaust ports 53. The ceiling chamber 51 and the ceiling space extend, for example, in the fourth plane direction. The exhaust duct 52 extends, for example, in the vertical direction Z'.

The existing exhaust device 5 is a device that exhausts air from, for example, multiple indoor spaces R (a combination of R1 and R3 or a combination of R2 and R4 in FIG. 10). A known exhaust duct installed in the ceiling space may be used as the existing exhaust device 5.

When an existing exhaust device 5 is used, the closed space Q of the indoor exhaust floor material 1 is connected to the outdoor space O, which is the attic space, via the second end 102 and one of the exhaust pipes 3c, 3d, or 3e. As a result, the indoor space R is connected to the outdoor space O, which is the attic space, via the closed space Q, and the exhaust to the outdoor space O is controlled by the exhaust control unit 2. Note that, in this embodiment, an example in which the exhaust control unit 2 is installed in the outdoor space O, which is the attic space, is described, but is not limited to this.

<Exhaust Operation in the Room Space R1>
In the exhaust operation in the indoor space R1, the air in the indoor space R1 flows in an exhaust direction F1 toward the exhaust port 11 (sixth step). Here, the exhaust direction F1 may be, for example, the vertical direction Z', the fifth planar direction, or the sixth planar direction. At this time, the air flowing in the exhaust direction F1 may be a vertical laminar flow with respect to the building.

The air then collides with the inclined surface of the straightening section 12, and at least a portion of the air flows in the exhaust direction along the inclined surface toward the second end 102, and then flows in the exhaust direction F2 from the first end 101 toward the second end 102 (seventh step). Here, the exhaust direction F2 may be, for example, the fourth plane direction. At this time, the air flowing in the exhaust direction F2 may be a horizontal laminar flow with the building as the reference.

Then, the air flows in the exhaust pipe 3c in the exhaust direction F3 from the closed space Q side toward the ceiling space side due to the suction force from the exhaust control unit 2 (step 8). Here, the exhaust direction F3 is the same as the extension direction of the exhaust pipe 3c, and may be, for example, the vertical direction Z'. At this time, the air flowing in the exhaust direction F3 may be a vertical laminar flow with the building as the reference.

Then, the air flows in the attic space in exhaust direction F4 toward the exhaust duct 52 side due to the suction force from the exhaust control unit 2 (9th step). Here, the exhaust direction F4 is the same as the extension direction of the attic space, and may be, for example, the fourth plane direction. At this time, the air flowing in the exhaust direction F4 may be a horizontal laminar flow with the building as the reference.

Then, the air flows in an exhaust direction F5 toward the outdoor exhaust port for exhausting the air from inside the exhaust duct 52 to the outdoor space (step 10). Here, the exhaust direction F5 is the same as the extension direction of the exhaust duct 52, and may be, for example, the vertical direction Z'. At this time, the air flowing in the exhaust direction F5 may be a vertical laminar flow with respect to the building.

Here, the indoor exhaust floor structure 100 further includes an existing exhaust device 5, and thus performs the above-mentioned eighth to tenth steps, allowing the air in the indoor space R to be exhausted to the outdoors. This eliminates the need to install a new duct to guide the air exhausted from the indoor space R. This further improves the ease of installation of the indoor exhaust floor structure 100.

<Exhaust Operation in the Room Space R2>
The configuration of the indoor exhaust floor structure 100 in the indoor space R2 differs from that of the indoor space R1 in that the exhaust pipe 3d connects the closed space Q and the space above the ceiling via the existing exhaust port 53. In this case, there is no need to drill a new vent in the ceiling. This improves the ease of installation of the indoor exhaust floor material 1. The exhaust operation in the indoor space R2 is the same as the exhaust operation in the indoor space R1.

<Exhaust Operation in the Room Space R3>
The configuration of the indoor exhaust floor structure 100 in the indoor space R3 is different from that of the indoor space R1 in that it includes an indoor exhaust floor material 1', which is a wall material. Here, the closed space Q in the indoor exhaust floor material 1' is directly connected to the ceiling space in the ceiling chamber 51 through an opening provided in the second end 102'. In other words, there is no need to provide an exhaust pipe 3. This makes it possible to improve the ease of installation of the indoor exhaust floor material 1.

In the exhaust operation in the indoor space R3, the air in the indoor space R3 flows in an exhaust direction F6 toward the exhaust port 11 (step 11). Here, the exhaust direction F6 may be, for example, the first horizontal direction X', the fourth planar direction, or the fifth planar direction. At this time, the air flowing in the exhaust direction F6 may be a horizontal laminar flow with the building as the reference.

The air then collides with the inclined surface (not shown) of the straightening section 12', and at least a portion of the air flows in the exhaust direction along the inclined surface toward the second end 102', and then flows in the exhaust direction F7 from the first end 101' toward the second end 102', passes through the opening of the second end 102', and flows into the ceiling space in the ceiling chamber 51 (step 12). Here, the exhaust direction F7 may be, for example, the sixth plane direction. At this time, the air flowing in the exhaust direction F7 may be a vertical laminar flow with the building as the reference.

<Exhaust Operation in Room Space R4>
The configuration of the indoor exhaust floor structure 100 in the indoor space R4 is different from that of the indoor space R1 in that the closed space Q in the indoor exhaust floor material 1' of the wall material is connected to the ceiling space in the ceiling chamber 51 via the exhaust pipe 3e and the existing exhaust port 53'. In other words, even if the indoor exhaust floor material 1' is used as the wall material, there is no need to drill a new vent in the ceiling. This improves the ease of installation of the indoor exhaust floor material 1.

In the exhaust operation in the indoor space R4, after the above-mentioned step 11, at least a portion of the air flows in the exhaust direction F7 along the inclined surface toward the second end 102' as in step 12, and then flows in the exhaust pipe 3e in the exhaust direction F8 from the closed space Q side toward the ceiling space side due to the suction force from the exhaust control unit 2 (step 13).

The above operations complete the exhaust of the indoor space R using the indoor exhaust floor structure 100.

Although not shown in the figures, the indoor exhaust flooring 1 of the flooring may be connected directly to the internal space of the exhaust duct 52 through an opening in the second end 102 of the closed space Q, similar to the indoor exhaust flooring 1' of the wall material in the indoor space R3. Even in this case, the installation of the exhaust pipe 3 can be omitted, and the ease of installation of the indoor exhaust flooring 1 can be improved.

(Method of manufacturing indoor exhaust floor material 1)
Next, an example of a manufacturing method for the indoor exhaust floor material 1 constituting the indoor exhaust floor structure 100 in this embodiment will be described with reference to FIG.

The manufacturing method of the indoor exhaust flooring material 1 includes, for example, an outer layer forming process for forming the outer layer 10 including each main plate 10f, 10b, each end 101, 102, and a pair of side plates, an exhaust port drilling process for drilling an exhaust port 11 in the first main plate 10f, and a rectifying portion installation process for providing a rectifying portion 12 on the inner surface of the second main plate 10b.

For example, when making the second main plate 10b and the straightening section 12 of the indoor exhaust flooring material 1 detachable, the worker first carries out the outer layer molding process and the exhaust port drilling process, and then carries out the straightening section installation process.

The worker may use a straightening section 12 having dimensions and a shape that allows it to pass through the opening of the exhaust port 11, as shown in FIG. 11(a), for example. In this case, the straightening section 12 can be newly installed or replaced in the outer layer section 10 through the opening of the exhaust port 11 with the outer layer section 10 of the indoor exhaust flooring 1 in place. This can further improve the ease of installation of the indoor exhaust floor structure 100. In addition, when the straightening section 12 has dimensions and a shape that allows it to pass through the opening provided in the second end 102, the straightening section 12 can be newly installed or replaced in the outer layer section 10 through the opening of the second end 102 with the outer layer section 10 of the indoor exhaust flooring 1 in place.

For example, as shown in FIG. 11(b), the worker may detachably attach the outer edge plate portion 101f on the first end 101 side of the first main plate 10f and the first end 101. Here, the outer edge plate portion 101f may be lifted from the position shown by the dashed line in FIG. 11(b) to the position shown by the solid line (the position of the outer edge plate portion 101f'. At this time, the first main plate 10f moves to the first main plate 10f' shown by the dashed line) to form a gap 103. In this case, the straightening portion 12 can be newly installed or replaced in the outer layer portion 10 through the gap 103 with the outer layer portion 10 of the indoor exhaust floor material 1 installed. This can improve the ease of installation of the indoor exhaust floor material 1 that exhausts to the underfloor space of the building.

For example, when the second main plate 10b and the rectifier 12 are integrated for the indoor exhaust flooring 1, the worker may perform the rectifier installation process either before or after the exhaust port drilling process, or may perform the rectifier installation process simultaneously with the exhaust port drilling process. In addition, when the second main plate 10b is plastically deformed by pressing or the like as shown in FIG. 8(a), or when the second main plate 10b is cut out and formed by cutting or the like as shown in FIG. 8(b), the rectifier 12 may be provided on the inner surface of the second main plate 10b in the outer layer forming process, in which case the rectifier installation process may be omitted.

In addition, the worker may install the filter 13 during either the exhaust port drilling process or the flow straightening section installation process after the exhaust port 11 has been drilled.

The above steps complete the manufacturing of the indoor exhaust flooring material 1.

(Modification of the indoor exhaust floor structure 100)
Next, a modified example of the configuration of the indoor exhaust floor structure 100 in this embodiment will be described with reference to FIG.

<Indoor exhaust floor material 1>
The indoor exhaust floor material 1 has a shape in which the outer periphery is recessed from the center as shown in Fig. 12(a), for example. In this case, the indoor exhaust floor material 1 forms a floor surface groove structure in which the outer periphery is lower than the center of the floor surface.

<First main plate 10f>
The first main plate 10f extends in a third plane direction including, for example, the second direction Y and the depth direction Z. At this time, the first main plate 10f is separated from the wall surface forming the indoor space R, and the air in the indoor space R can pass between the first main plate 10f and the wall surface. That is, the indoor exhaust floor structure 100 exhausts the air in the indoor space R through the exhaust port 11 provided toward the wall surface at the outer edge of the floor surface. In this case, it is possible to prevent the user from stepping on the exhaust port 11 and prevent damage to the indoor exhaust floor material 1. In addition, it is possible to prevent objects in the room from falling into the closed space Q through the exhaust port 11. This improves the convenience of the indoor exhaust floor structure 100.

As described above, the straightening unit 12 may be installed in the closed space Q. Here, the straightening unit 12 may convert the exhaust direction from a horizontal laminar flow (first plane direction) to a vertical laminar flow (third plane direction) by colliding the exhaust from the indoor space R passing through the exhaust port 11 with an inclined surface 121 whose diameter increases as it moves toward the exhaust direction of the indoor space R passing through the exhaust port 11 (first plane direction in FIG. 12). The straightening unit 12 may also convert the exhaust direction from a vertical laminar flow to a horizontal laminar flow by colliding the exhaust from the indoor space R passing through the exhaust port 11 and moving toward the third plane direction in the closed space Q with an inclined surface 121 whose diameter increases as it moves toward the depth direction Z. This can improve the exhaust efficiency to the underfloor space.

(Method for cleaning the indoor exhaust floor structure 100)
Next, an example of a cleaning method for the indoor exhaust floor structure 100 in this embodiment will be described with reference to Fig. 13. The indoor exhaust floor structure 100 can clean the inside of the enclosed space Q when the material of the indoor exhaust floor material 1 is a waterproof material such as plastic (synthetic resin), aluminum, stainless steel (SUS304, etc.) described in ISO1043-1 or JIS K 6899-1.

The cleaning method for the indoor exhaust floor structure 100 includes a cleaning liquid supply process and a cleaning liquid drainage process.

<Cleaning liquid supply process>
In the cleaning liquid supplying step, as shown in Fig. 13(a), for example, an operator supplies cleaning liquid L to the enclosed space Q of the indoor exhaust floor material 1 through the exhaust port 11. At this time, the cleaning liquid L is supplied in a water supply direction Lf1. As the cleaning liquid L, a known floor cleaning material may be used.

<Cleaning liquid drainage process>
In the cleaning liquid supplying step, for example, after the cleaning liquid L is supplied to the closed space Q, the worker operates the exhaust control unit 2 to suck and drain the cleaning liquid L from the closed space Q. At this time, the cleaning liquid L is drained in the drainage direction Lf2 in the exhaust pipe 3a, and drained in the drainage direction Lf3 in the exhaust pipe 3b. In this case, the closed space Q can be easily cleaned. This can improve the installability and manageability of the indoor exhaust floor structure 100.

In addition, in the cleaning liquid supply process, the operator may drain the cleaning liquid L from the closed space Q by operating the electric drain 6 connected to the closed space Q after the cleaning liquid L is supplied to the closed space Q, as shown in FIG. 13(b), for example. At this time, the cleaning liquid L is drained in the drain direction Lf4 in the exhaust pipe 3c connecting the closed space Q and the electric drain 6, and drained in the drain direction Lf5 in the exhaust pipe 3d connecting the electric drain 6 and the outdoor space O. In this case, the closed space Q can be easily cleaned. This improves the installation and management of the indoor exhaust floor structure 100. In addition, the electric drain 6 may be an electric check valve. The electric drain 6 may be drilled in at least one of the various main plates that constitute the indoor exhaust floor material 1.

According to this embodiment, the indoor exhaust floor material 1 has a first main plate 10f and a second main plate 10b that form an enclosed space Q, and an exhaust port 11 drilled in the first main plate 10f. Therefore, it is possible to easily form an underfloor space in a room that does not have an underfloor space. This improves the ease of installation of the indoor exhaust floor structure 100.

In addition, according to this embodiment, the exhaust control unit 2 controls the exhaust of the room via the exhaust port 11 and the closed space Q. That is, a vertical laminar flow from top to bottom is formed in the room space R. Therefore, the one-way exhaust can prevent the spread of viruses, bacteria, etc. in the room. This can improve the convenience of the indoor exhaust floor structure 100.

In addition, according to this embodiment, the indoor exhaust floor material 1 has a straightening section 12 provided on the inner surface of the second main plate 10b so that a protrusion having an inclined surface overlaps with the exhaust port 11 when viewed in the depth direction Z, and the exhaust control section 2 controls the exhaust of the room through the exhaust port 11 and the enclosed space Q. Therefore, the exhaust air from the room passing through the exhaust port 11 collides with the inclined surface, and the exhaust direction is changed from the depth direction Z to the extension direction of each main plate 10f, 10b. This improves the exhaust efficiency of the indoor exhaust floor structure 100 into the underfloor space.

In addition, according to this embodiment, the closed space Q of the indoor exhaust floor material 1 is connected to the ceiling space of the existing ceiling chamber type exhaust device 5, and the exhaust control unit 2 controls the exhaust of the room (indoor space R) through the exhaust port 11, the closed space Q, and the ceiling space. Therefore, there is no need to install a new duct to guide the air exhausted from the room (indoor space R). This makes it possible to further improve the ease of installation of the indoor exhaust floor structure 100.

In addition, according to this embodiment, the inclination angle θ of the inclined surface 121 of the straightening section 12 decreases as it approaches the depth direction Z. Therefore, when exhaust air from the room (room space R) passing through the exhaust port 11 collides with the inclined surface 121, the exhaust direction f (exhaust direction F) is changed more gently, and exhaust noise caused by the collision can be suppressed. This improves the convenience of the indoor exhaust floor structure 100.

In addition, according to this embodiment, the straightening section 12 is detachable from the second main plate 10b and can pass through the opening of the exhaust port 11. Therefore, the straightening section 12 can be newly installed or replaced within the outer layer 10 while the outer layer 10 of the indoor exhaust floor material 1 is in place. This further improves the ease of installation of the indoor exhaust floor structure 100.

In addition, according to this embodiment, the straightening section 12 is integral with the second main plate 10b. This prevents shear displacement or peeling of the straightening section 12 caused by the exhaust air from the room (room space R) passing through the exhaust port 11 colliding with the inclined surface 121. This improves the durability of the indoor exhaust floor structure 100.

In addition, according to this embodiment, there are a first main plate 10f and a second main plate 10b that form the closed space Q, and an exhaust port 11 that is drilled in the first main plate 10f. Therefore, it is possible to easily form an underfloor space in a room that does not have an underfloor space. This improves the ease of installation of the indoor exhaust floor structure 100.

According to this embodiment, the method for cleaning the indoor exhaust floor structure 100 includes a cleaning liquid supply process for supplying cleaning liquid L to the closed space Q through the exhaust port 11, and a cleaning liquid drainage process for draining the cleaning liquid L from the closed space Q by the operation of the exhaust control unit 2. This makes it easy to clean the closed space Q. This improves the ease of installation of the indoor exhaust floor structure 100 and improves the manageability.

According to this embodiment, the method for cleaning the indoor exhaust floor structure 100 includes a cleaning liquid supply step of supplying cleaning liquid L to the closed space Q through the exhaust port 11, and a cleaning liquid drain step of draining the cleaning liquid L from the closed space Q by operating the electric drain port 6 connected to the closed space Q. This makes it easy to clean the closed space Q. This improves the ease of installation of the indoor exhaust floor structure 100 and improves the manageability.

Although several embodiments of the present invention have been described, these embodiments are presented as examples and are not intended to limit the scope of the invention. These novel embodiments can be implemented in various other forms, and various omissions, substitutions, and modifications can be made without departing from the gist of the invention. These embodiments and their modifications are included in the scope and gist of the invention, and are included in the scope of the invention and its equivalents described in the claims.

100 Indoor exhaust floor structure 1 Indoor exhaust floor material 10f First main plate 10b Second main plate 101 First end 102 Second end 103 Gap 11 Exhaust port 12 Flow straightening section 120 Top 121 Inclined surface 122 Bottom 13 Filter 2 Exhaust control section 3 Exhaust pipe 4 Support section 40 Air passage 5 Existing exhaust equipment 6 Electric drain outlet θ Incline angle R Indoor O Outdoor Q Closed space L Cleaning liquid f, F Exhaust direction X First direction Y Second direction Z Depth direction X' First horizontal direction Y' Second horizontal direction Z' Vertical direction

Claims (6)

An indoor exhaust floor structure for exhausting indoor air to the outside,
an indoor exhaust floor material having an exhaust port drilled in a first main board on the indoor side among a plurality of main boards facing each other at a distance from each other to form a closed space; and a straightening portion provided on an inner surface of a second main board on the outdoor side among the plurality of main boards so that a protrusion having an inclined surface that increases in diameter as it goes in the depth direction from the exhaust port and a side surface that rises in the depth direction from the inclined surface overlaps with the exhaust port when viewed in the depth direction;
an exhaust control unit that controls exhaust from the room through the exhaust port of the room exhaust floor material and the enclosed space;
An indoor exhaust floor structure comprising: The closed space of the indoor exhaust floor material is connected to a ceiling space of an existing exhaust device of a ceiling chamber type,
The indoor exhaust floor structure according to claim 1, characterized in that the exhaust control unit controls the exhaust of the room through the exhaust port of the indoor exhaust floor material, the closed space, and the ceiling space of the existing exhaust device. The indoor exhaust floor structure according to claim 1 , wherein the inclination angle of the inclined surface of the airflow straightening portion decreases as the airflow straightening portion approaches the depth direction from the exhaust port. The indoor exhaust floor structure according to claim 1 , wherein the airflow straightening portion is detachable from the second main plate and can pass through the exhaust port. The indoor exhaust floor structure according to claim 1 , wherein the airflow straightening portion is integral with the second main plate. An indoor exhaust floor material for exhausting indoor air to the outside,
This floor material for indoor exhaust comprises an exhaust port drilled in a first main board on the indoor side among a plurality of main boards which face each other at a distance from each other and form a closed space, and a straightening portion provided on the inner surface of a second main board on the outdoor side among the plurality of main boards so that a protrusion having an inclined surface which widens in diameter as it extends in the depth direction from the exhaust port and a side surface which rises in the depth direction from the inclined surface overlaps with the exhaust port when viewed in the depth direction.

Images