Floor structure for indoor exhaustion, and floor material for indoor exhaustion

Abstract

To provide a floor structure 100 for indoor exhaustion which attains improvement in installation performance of a system for performing exhaustion into an underfloor space in a room with no underfloor space, a floor material 1 for indoor exhaustion, and a cleaning method for the floor structure for indoor exhaustion.SOLUTION: A floor structure 100 for indoor exhaustion exhausts air in a room R to a room outside O. The floor structure 100 for indoor exhaustion comprises: a floor material 1 for indoor exhaustion including an exhaust port 11 opened on a first main plate 10f in a plurality of main plates forming a closed space Q while being separated and opposed to each other; and an exhaustion control section 2 for controlling the exhaustion in the room via the exhaust port 11 of the floor material 1 for indoor exhaustion and the closed space Q. The floor material 1 for indoor exhaustion may also further include a rectification section 12 provided on an inner surface of a second main plate 10b at the room outside in the plurality of main plates in such a manner that a projection having n inclined plane, of which the diameter is expanded from the exhaust port 11 in a depth direction Z, is overlapped with the exhaust port 11 in a view in the depth direction Z.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to an indoor exhaust floor structure installed in a building, an indoor exhaust floor material, and a method for cleaning the indoor exhaust floor structure. [Background technology]

[0002] Currently, research is being conducted on technologies to exhaust air inside buildings by utilizing spaces under floors and behind walls. In recent years, there are many highly airtight residences and facilities, such as reinforced concrete and steel frame systems, commercial facilities, and tower apartments. These are buildings where many people gather, and there is a 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 gather 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 the operating room of a medical facility, which is the strictest in terms of infection prevention, the CDC Surgical Site Infection Prevention Guidelines 1999 stipulates that "air should be taken in from the ceiling and exhausted from near the floor" as a ventilation measure. In addition, for the same reason, not only is it necessary to prevent infection by viruses and bacterial flora, but so-called dust such as house dust generated in people's living spaces also causes diseases such as asthma because it is scattered and collected downward. In addition, conventional underfloor vents in buildings were designed to exhaust air from the space under the floor, not from the indoor space. In light of this situation, there is a strong need for ventilation through means other than the ceiling, such as floor or wall exhaust, as part of creating a healthier environment.

[0003] Patent Document 1 discloses a ventilation device that draws in and exhausts air to any one of an attic space, an underfloor space, and a back-of-wall space of a building. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] JP 2023-090578 A Summary of the Invention [Problem to be solved by the invention]

[0005] According to the ventilation device disclosed in Patent Document 1, by utilizing the attic space, underfloor space, and back-of-wall space 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 that the installation of a system related to floor exhaust cannot be improved.

[0006] The present invention has been devised in consideration of the above-mentioned problems, and its object 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 under-floor space in a room that does not have an under-floor space. [Means for solving the problem]

[0007] 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 by comprising 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 an exhaust control unit that controls the exhaust of the room through the exhaust port of the indoor exhaust floor material and the closed space.

[0008] The indoor exhaust floor structure of the second invention is characterized in that, in the first invention, the indoor exhaust floor material further has a straightening portion provided on the inner surface of the second main plate on the outdoor side among the multiple main plates so that a protrusion having an inclined surface that widens in diameter as it proceeds in the depth direction from the exhaust port overlaps with the exhaust port when viewed in the depth direction.

[0009] The indoor exhaust floor structure of the third invention is characterized in that, in the first or second invention, the closed space of the indoor exhaust floor material is connected to the ceiling space of an existing exhaust device of a 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.

[0010] The indoor exhaust floor structure of the fourth invention is characterized in that, in the second invention, the straightening section has an inclination angle of the inclined surface that decreases as the inclination angle approaches the depth direction from the exhaust port of the main plate on the outdoor side.

[0011] The indoor exhaust floor structure of the fifth invention is characterized in that, in the second invention, the straightening portion is detachable from the second main plate and can pass through the opening of the exhaust port.

[0012] The indoor exhaust floor structure in a sixth aspect of the present invention is the same as the second aspect of the present invention, in which the airflow straightening portion is integral with the second main plate.

[0013] The indoor exhaust floor material of the seventh invention is an indoor exhaust floor material for exhausting indoor air to the outside, and is characterized in having a first main plate on the indoor side and a second main plate on the outdoor side which are spaced apart and facing each other to form a closed space, an exhaust port drilled in the first main plate, and a straightening portion provided on the inner surface of the second main plate so that a protrusion having an inclined surface which increases in diameter as it extends in the depth direction from the exhaust port overlaps with the exhaust port when viewed in the depth direction.

[0014] The cleaning method for an indoor exhaust floor structure in the eighth invention is a cleaning method for an indoor exhaust floor structure that exhausts indoor air to the outside, and is characterized by having a cleaning liquid supplying process for supplying cleaning liquid to the blocked space through an exhaust port drilled in a first main board on the indoor side of a plurality of waterproof main boards that are spaced apart from each other and face each other to form a blocked space, and a cleaning liquid draining process for draining the cleaning liquid from the blocked space by operation of an exhaust control unit that controls the exhaust of the room through the exhaust port of the indoor exhaust floor material and the blocked space after the cleaning liquid has been supplied in the cleaning liquid supplying process.

[0015] The cleaning method for an indoor exhaust floor structure in the 9th invention is a cleaning method for an indoor exhaust floor structure that exhausts indoor air to the outside, and is characterized by having a cleaning liquid supplying process for supplying cleaning liquid to a blocked space through an exhaust port drilled in a first main board on the indoor side of a plurality of waterproof main boards that are spaced apart and facing each other to form a blocked space, and a cleaning liquid draining process for draining the cleaning liquid from the blocked space by operating an electric drain port connected to the blocked space after the cleaning liquid has been supplied by the cleaning liquid supplying process. Effect of the Invention

[0016] According to the first to sixth inventions, 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 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.

[0017] According to the first to sixth inventions, the exhaust control section controls exhaust from the room through the exhaust port and the closed space. That is, a vertical laminar flow from top to bottom is formed in the room 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.

[0018] In particular, according to the second aspect of the present invention, the indoor exhaust floor material has a 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.

[0019] In particular, according to the third 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.

[0020] In particular, according to the fourth aspect of the present invention, the inclination angle of the inclined surface of the flow straightening section decreases in 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.

[0021] In particular, according to the fifth aspect of the present invention, the straightening section is detachable from the second main plate and can pass through the opening of the exhaust port. Therefore, the 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.

[0022] In particular, according to the sixth aspect of the present invention, the airflow straightening section is integrated with the second main plate. This prevents shearing and peeling of the airflow straightening section caused by indoor exhaust air passing through the exhaust port colliding with the inclined surface. This improves the durability of the indoor exhaust floor structure.

[0023] According to the seventh aspect of the present invention, the exhaust port is provided in the first main plate among the main plates that form the closed space. Therefore, it is possible to easily form an under-floor space in a room that does not have an under-floor space. This improves the ease of installation of the indoor exhaust floor structure.

[0024] According to the eighth aspect of the present invention, the cleaning method for an indoor exhaust floor structure includes a cleaning liquid supply step of supplying cleaning liquid to the closed space through the exhaust port, and a cleaning liquid drain step of draining the cleaning liquid from the closed space by operating the exhaust control unit. This makes it possible to easily clean the closed space. This improves the ease of installation of the indoor exhaust floor structure and the manageability.

[0025] According to the ninth aspect of the present invention, the method for cleaning an indoor exhaust floor structure includes a cleaning liquid supply step of supplying cleaning liquid to an enclosed space through an exhaust port, and a cleaning liquid drain step of draining cleaning liquid from the enclosed space by operating an electric drain port connected to the enclosed space. This makes it easy to clean the enclosed space. This improves the ease of installation of the indoor exhaust floor structure and the manageability. [Brief description of the drawings]

[0026] [Figure 1] FIG. 1 is a schematic diagram showing an example of the configuration of an indoor exhaust floor structure in this embodiment. [Diagram 2] 2(a) and 2(b) are schematic diagrams showing an example of an exhaust method for the indoor exhaust floor structure in this embodiment. [Diagram 3] FIG. 3 is a schematic diagram showing an example of the configuration of the indoor exhaust floor structure in this embodiment. [Figure 4] FIG. 4(a) is a schematic cross-sectional view showing an example of the vicinity of the straightening section corresponding to the AA 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 a modified example of FIG. 4(b). [Diagram 5] 5(a) to 5(c) are schematic cross-sectional views showing first to third modified examples of the flow straightening section of FIG. 4(a). [Figure 6] 6(a) to 6(c) are schematic cross-sectional views showing fourth to sixth modified examples of the airflow rectifying portion of FIG. 4(a). [Figure 7] Figure 7(a) is a schematic cross-sectional view showing a seventh modified example of the 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 the modified example of Figure 7(b). [Figure 8] 8(a) and 8(b) are schematic cross-sectional views showing eighth and ninth modified examples of the airflow rectifying portion of FIG. 4(a). [Figure 9] FIG. 9 is a schematic diagram showing an example of the operation of the indoor exhaust floor structure in this embodiment. [Figure 10] FIG. 10 is a schematic diagram showing a modified example of the configuration and operation of the indoor exhaust floor structure in this embodiment. [Figure 11] 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. [Figure 12] 12(a) and 12(b) are schematic diagrams showing modified examples of the configuration of the indoor exhaust floor structure in this embodiment. [Figure 13] 13(a) and 13(b) are schematic diagrams showing an example of a method for cleaning the indoor exhaust floor structure in this embodiment. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] Hereinafter, an example of an indoor exhaust floor structure 100 as an embodiment of the present invention will be described in detail with reference to the drawings. In each drawing, a first direction X is defined, one direction perpendicular to the first direction X is defined as a second direction Y, and a direction perpendicular to each of the first direction X and the second direction Y is defined as a depth direction Z. The configurations in each drawing are depicted diagrammatically for the purpose of explanation, and for example, the size of each component and the size comparison between the components may differ from those in the drawing.

[0028] (Floor structure for indoor exhaust 100) An example of an indoor exhaust floor structure 100 in this embodiment will be described with reference to Figs. 1 to 8.

[0029] The indoor exhaust floor structure 100 is a floor structure that constitutes the indoor floor surface of a building. The indoor exhaust floor structure 100 includes an indoor exhaust floor material 1 and an exhaust control unit 2, as shown in FIG. 1. The indoor exhaust floor structure 100 exhausts, for example, air from an indoor space R to an 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 the exhaust efficiency can be improved.

[0030] 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 the indoor air moving from bottom to top is formed, and infectious substances such as viruses and bacteria are stirred up, which may cause the spread of infection. 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 a closed space Q in the indoor exhaust floor material 1 and an exhaust duct, so that a vertical laminar flow of the 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.

[0031] <Indoor exhaust flooring 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.

[0032] The indoor exhaust floor material 1, as shown in Fig. 3, is made of an outer layer portion 10 having an enclosed space Q therein. The outer layer portion 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 portion 101 and a second end portion 102 that face each other at a distance to form the enclosed space Q.

[0033] Here, the closed space Q is the underfloor space. 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, exhausting the indoor space R through the closed space Q makes it possible to easily form the underfloor space without the time-consuming task of newly excavating the floor surface, and exhausting to the underfloor space of the building can be realized. This improves the ease of installation of the indoor exhaust floor structure 100 that can exhaust to the underfloor space.

[0034] The closed space Q of the indoor exhaust floor material 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.

[0035] 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 portion 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.

[0036] Here, 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. In addition, 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.

[0037] The indoor exhaust floor material 1 is made of a metal such as aluminum or stainless steel (SUS304, etc.).

[0038] <1st main plate 10f> The first main board 10f is a board 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 board 10f extends in a first planar direction including the first direction X and the second direction Y, for example.

[0039] As for the dimensions of the first main plate 10f, for example, as shown in FIG. 4(a), the thickness w4 is about 4 mm.

[0040] 3 and 4, the first main plate 10f is provided with one or more exhaust ports 11. At this time, the indoor space R and the enclosed space Q are connected to each other via the exhaust ports 11.

[0041] <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 planar 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.

[0042] 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 separation width between the second main plate 10b and the first main plate 10f, i.e., the width w6 in the depth direction Z of the enclosed space Q, is, for example, about 14 mm. In addition, among the outer layer portion 10 shown in FIG. 3, the thicknesses of a pair of side plates extended in a second planar direction including the first direction X and the depth direction Z, excluding the main plates 10f, 10b and the ends 101, 102, are, for example, about 4 mm each. In this case, the separation width between the pair of side plates, i.e., the width in the second direction Y of the enclosed space Q, is, for example, about 292 mm.

[0043] 3 and 4, the second main plate 10b may have a straightening portion 12 provided on its inner surface. For example, only one straightening portion 12 is provided for each exhaust port 11. In this case, air traveling between the indoor space R and the enclosed space Q collides with the straightening portion 12.

[0044] <First end 101, second end 102> The first end 101 and the second end 102 are plate members of the outer layer portion 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.

[0045] 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, the exhaust control unit 2, and the exhaust pipe 3b connected to the opening provided in the second end 102. 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.

[0046] <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.

[0047] In this embodiment, the shape of the exhaust port 11 is described as a circle, but any shape can be used as long as it can secure an area according to the required exhaust capacity. The size of the exhaust port 11 is, for example, as shown in Figures 4(b) to 4(d), a diameter w7 of about 100 mm.

[0048] 4(a), the exhaust port 11 may be provided with a filter 13 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 dirt contained in the exhaust air from blocking the exhaust path in the closed space Q when exhausting air from the indoor space R to the outdoor space O through the closed space Q.

[0049] <Rectification part 12> As shown in Fig. 4(a), for example, the flow 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 flow 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.

[0050] 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 the 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 an installation surface.

[0051] In this embodiment, the shape of the flow straightening portion 12 is described as a cone, but it may be any protruding shape having an inclined surface 121, such as a polygonal pyramid. Modified examples of the shape of the flow straightening portion 12 will be described later.

[0052] 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 equal to or greater than half the width w6, for example, about 11 to 22 mm.

[0053] The straightening unit 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 the straightening unit 12 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 Fig. 4(b) to Fig. 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 the filter 13 is provided.

[0054] 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 can improve 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.

[0055] As shown in FIG. 4(b), for example, the rectifying unit 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. As shown in FIG. 4(c), for example, the rectifying unit 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. 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, as shown in FIG. 4(d), for example, the rectifying unit 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. The diameter w8 of the flow straightening portion 12 may be substantially the same length as the diameter w7 of the exhaust port 11.

[0056] <Exhaust control section 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.

[0057] As the exhaust control unit 2, for example, a known blower or the like is used. 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 (by Tetsuya Kai, 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)," the ventilation rate required for ventilation inside the operating room is preferably set with reference to "outdoor 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.

[0058] For example, if the volume of the interior space R is approximately 24.3 m 3 (width 2.7m x depth 3.6m x height 2.5m) and when exhausting vertical laminar flow using the indoor exhaust floor material 1 as the floor material, the exhaust capacity required for the exhaust control unit 2 is 72.9m 3 / hr(24.3m 3 / times × 3 times / hr), which is about 0.020m 3 / s, the total area of ​​all the openings of the exhaust vents 11 drilled in the indoor exhaust floor material 1 is approximately 0.055 m 2 That is, by designing the exhaust port 11 to have seven circles with a diameter of w7 = 100 mm, the wind speed of the vertical laminar flow passing through the exhaust port 11 is about 0.37 m / s (0.020 m 3 / s÷0.055m 2 ), which satisfies the condition of "blowout wind speed: 0.35 m / s (vertical laminar flow)". 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 0.004 m2 when the cross-sectional area of ​​the enclosed space Q is about 2 (width w6 = 0.014 m, separation between the pair of side panels = 0.292 m), the velocity is approximately 71 m / s.

[0059] In addition, the exhaust capacity is 55m 3 / min, i.e. exhaust capacity of approximately 0.917 m 3 When exhausting air using an exhaust control unit 2 with a speed of 100 s / s, the volume of the indoor space R is approximately 1100 m 3The exhaust port 11 has a total area of ​​approximately 2.592 m2, and the exhaust port 11 has a vertical laminar flow speed of approximately 0.35 m / s or more. 2 This corresponds to about 330 perfect circles with a diameter w7 of 100 mm. In this way, the indoor exhaust floor structure 100 can also exhaust a wide range of indoor spaces R depending on the exhaust capacity of the existing exhaust control section 2 and the opening area and number of the exhaust ports 11.

[0060] The exhaust capacity is approximately 0.020 m 3 When exhausting horizontal laminar air at 100 s / s using the indoor exhaust floor material 1 as a wall material, the total area of ​​all the openings of the exhaust ports 11 drilled in the indoor exhaust floor material 1 must be approximately 0.039 m 2 That is, by designing the exhaust port 11 to have five circles with a diameter of w7 = 100 mm, the horizontal laminar wind speed when passing through the exhaust port 11 is about 0.52 m / s (0.020 m 3 / s÷0.039m 2 ), which satisfies the condition of "0.45 m / s (horizontal laminar flow)".

[0061] <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.

[0062] (Modification of the indoor exhaust floor structure 100) Modifications of the rectification section 12 will be described below with reference to FIGS.

[0063] As shown in Fig. 5(a), for example, the flow straightening unit 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 to 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 larger than the inclination angle θ2.

[0064] That is, in the airflow straightening section 12, the inclination angle θ of the inclined surface 121 decreases 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.

[0065] 5(b), the airflow 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. In this case as well, 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.

[0066] As shown in Fig. 5(c), for example, the flow straightening section 12 may have a convexly curved inclined surface 121 in which the inclination angle θ increases from the top 120 to the bottom 122. That is, 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 released, improving the durability of the flow straightening section 12. This can improve the exhaust efficiency and durability of the indoor exhaust floor structure 100.

[0067] 6(a), the airflow straightening unit 12 may have an inclined surface 121 that is asymmetric with respect to a perpendicular line passing through the top 120. 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 easily changed to a specific direction. This can further improve the efficiency of exhausting air into the space under the floor of the building.

[0068] The rectifying portion 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 injury when a person walking on the first main plate 10f accidentally steps on the rectifying portion 12 or when a worker grasps the rectifying portion 12 to install it. This can improve the safety and workability of the indoor exhaust floor structure 100.

[0069] 6(c), the airflow straightening unit 12 may have a side surface rising along the depth direction Z between the inclined surface 121 and the bottom portion 122. In this case, it is possible to reduce the risk that the air, whose exhaust direction has once been changed, will flow back along the inclined surface 121 toward the exhaust port 11. This makes it possible to further improve the exhaust efficiency of exhaust utilizing the space under the floor of a building.

[0070] The straightening unit 12 may have a support 4 between the bottom 122 and the second main plate 10b, as shown in FIG. 7(a), for example. The support 4 is made up of support parts 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 parts 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 efficiency of exhausting air 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 with respect to the diameter w7 of the exhaust port 11, and the width w8' of the straightening unit 12 indicates the width along the second direction Y with respect to the diameter w8 of the straightening unit 12.

[0071] The support portion 4 may be configured with one support portion 4c whose width along the second direction Y is shorter than the width w8' of the bottom portion 122. In this case, a plurality of air passages 40a, 40b are formed between the bottom portion 122, the support portion 4c, and the second main plate 10b. In this case as well, it is possible to reduce the risk that the air that has once had its exhaust direction changed will flow back toward the exhaust port 11, while making it difficult to impede the flow of air toward the exhaust direction, thereby further improving the efficiency of exhausting into the space under the floor of the building.

[0072] The flow straightening portion 12 may be integral with the second main plate 11b, for example, as shown in Fig. 8(a) to Fig. 8(b). In this case, it is possible to prevent shear displacement or peeling of the flow straightening portion 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 Fig. 8(a), the flow straightening portion 12 is provided by a method in which the second main plate 10b is plastically deformed by press working or the like. In the example of Fig. 8(b), the flow straightening portion 12 is provided by a method in which the peripheral surface of the second main plate 10b is cut out by cutting working or the like.

[0073] (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.

[0074] <Advance preparation> 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.

[0075] <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 the indoor exhaust floor material 1 as a reference.

[0076] The air then collides with the inclined surface 121 of the flow straightening section 12, and at least a portion of the air flows in an exhaust direction f2 along the inclined surface 121 toward the second end 102 (second step). The air then flows in an 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 with the indoor exhaust floor material 1 as a reference.

[0077] Furthermore, at least a portion of the air that collides with the inclined surface 121 of the flow straightening unit 12 after the first step may flow in an exhaust direction f4 along the inclined surface 121 toward the first end 101 (fourth step). Even in this case, the air then flows in an exhaust direction f3 from the first end 101 toward the second end 102 due to the suction force from the exhaust control unit 2 (fifth step). Note that the second and fourth steps and the third and fifth steps may be performed in parallel.

[0078] Here, if the straightening section 12 is not provided, the second and fourth steps described above cannot be performed. That is, the air in the indoor space R is converted from the exhaust direction f1 to the exhaust direction f3, which may cause turbulence around the exhaust port 11, reducing the exhaust efficiency, or may cause exhaust noise, 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 the exhaust efficiency and convenience.

[0079] 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.

[0080] (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 a 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 configurations and functions are the same.

[0081] 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, for example, 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.

[0082] <Advance preparation> 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'.

[0083] The existing exhaust device 5 is a device that exhausts air from, for example, a plurality of indoor spaces R (a combination of R1 and R3 or a combination of R2 and R4 in FIG. 10). As the existing exhaust device 5, a known exhaust duct provided in the ceiling space may be used.

[0084] When using an existing exhaust device 5, 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 any one of the exhaust pipes 3c, 3d, and 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 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, will be described, but the present invention is not limited to this.

[0085] <Exhaust operation in indoor 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.

[0086] Thereafter, the air collides with the inclined surface of the flow straightening unit 12, and at least a part 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.

[0087] Thereafter, the air flows in the exhaust pipe 3c in an 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 (eighth step). 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 respect to the building.

[0088] Thereafter, the air flows in the attic space in an exhaust direction F4 toward the exhaust duct 52 side by the suction force from the exhaust control unit 2 (ninth 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.

[0089] Thereafter, the air flows in exhaust direction F5 toward the outdoor exhaust port side for exhausting the air inside exhaust duct 52 to the outdoor space (tenth step). Here, exhaust direction F5 is the same as the extension direction of exhaust duct 52, and may be, for example, vertical direction Z'. At this time, the air flowing in exhaust direction F5 may be a vertical laminar flow with respect to the building.

[0090] Here, by further including the existing exhaust device 5, the indoor exhaust floor structure 100 can carry out the above-mentioned eighth to tenth steps and exhaust the air in the indoor space R to the outdoors. Therefore, there is no need to install a new duct to guide the air exhausted from the indoor space R. This can further improve the ease of installation of the indoor exhaust floor structure 100.

[0091] <Exhaust operation in indoor 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 ceiling space 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.

[0092] <Exhaust operation in indoor space R3> The configuration of the indoor exhaust floor structure 100 in the indoor space R3 differs 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.

[0093] 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 (eleventh step). 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.

[0094] The air then collides with the inclined surface (not shown) of the flow straightening unit 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 to the ceiling space in the ceiling chamber 51 (12th step). 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 respect to the building.

[0095] <Exhaust operation in indoor 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.

[0096] As for the exhaust operation in the indoor space R4, after the above-mentioned step 11, as in step 12, at least a portion of the air flows in exhaust direction F7 along the inclined surface approaching the second end 102', and then, due to the suction force from the exhaust control unit 2, flows within the exhaust pipe 3e in exhaust direction F8 from the closed space Q side toward the attic space side (step 13).

[0097] Through the above operations, exhaust of the indoor space R by the indoor exhaust floor structure 100 is completed.

[0098] Although not shown in the drawings, the indoor exhaust floor material 1 of the floor material may be connected directly to the internal space of the exhaust duct 52 through an opening provided at the second end 102 of the closed space Q, similar to the indoor exhaust floor material 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 floor material 1 can be improved.

[0099] (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.

[0100] The manufacturing method for the indoor exhaust floor material 1 includes, for example, an outer layer forming process for forming an outer layer 10 including each main board 10f, 10b, each end 101, 102 and a pair of side boards, an exhaust port drilling process for drilling an exhaust port 11 in the first main board 10f, and a straightening section installation process for providing a straightening section 12 on the inner surface of the second main board 10b.

[0101] For example, when making the second main panel 10b and the straightening section 12 of the indoor exhaust floor material 1 detachable, a worker performs the outer layer molding process and the exhaust port drilling process, and then performs the straightening section installation process.

[0102] The worker may use a straightening part 12 having dimensions and a shape that allows it to pass through the opening of the exhaust port 11, for example, as shown in FIG. 11(a). In this case, the straightening part 12 can be newly installed or replaced in the outer layer part 10 through the opening of the exhaust port 11 with the outer layer part 10 of the indoor exhaust floor material 1 installed. This can further improve the ease of installation of the indoor exhaust floor structure 100. In addition, when the straightening part 12 has dimensions and a shape that allows it to pass through the opening provided in the second end part 102, the straightening part 12 can be newly installed or replaced in the outer layer part 10 through the opening of the second end part 102 with the outer layer part 10 of the indoor exhaust floor material 1 installed.

[0103] 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 to the first end 101. Here, the outer edge plate portion 101f may be lifted from the position shown by the broken 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 broken line) to form the 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.

[0104] For example, when the second main plate 10b and the rectifier 12 are integrated for the indoor exhaust floor material 1, the worker may perform the rectifier installation step either before or after the exhaust port drilling step, or may perform the rectifier installation step simultaneously with the exhaust port drilling step. Also, when the second main plate 10b is plastically deformed by press working 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 step, in which case the rectifier installation step may be omitted.

[0105] Furthermore, the worker may install the filter 13 either in the exhaust port drilling step or in the flow straightening part installation step, as long as the exhaust port 11 has already been drilled.

[0106] Through the above steps, the production of the indoor exhaust floor material 1 is completed.

[0107] (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.

[0108] <Indoor exhaust flooring 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.

[0109] <1st main plate 10f> The first main plate 10f extends in a third planar 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. It is also 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.

[0110] 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 having the exhaust gas from the indoor space R passing through the exhaust port 11 collide with an inclined surface 121 whose diameter increases toward the exhaust direction (first plane direction in FIG. 12) of the indoor space R passing through the exhaust port 11. The straightening unit 12 may also convert the exhaust direction from a vertical laminar flow to a horizontal laminar flow by having the exhaust gas from the indoor space R passing through the exhaust port 11 collide with an inclined surface 121 whose diameter increases toward the depth direction Z and heads toward the third plane direction in the closed space Q. This can improve the efficiency of exhausting to the underfloor space.

[0111] (Method for cleaning 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 indoor exhaust floor material 1 is made of a waterproof material such as plastic (synthetic resin), aluminum, stainless steel (SUS304, etc.) described in ISO1043-1 or JIS K 6899-1.

[0112] The cleaning method for the indoor exhaust floor structure 100 includes a cleaning liquid supplying step and a cleaning liquid draining step.

[0113] <Cleaning solution 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.

[0114] <Cleaning solution 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.

[0115] In addition, in the cleaning liquid supplying step, after the cleaning liquid L is supplied to the closed space Q, 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, as shown in FIG. 13(b), for example. At this time, the cleaning liquid L is drained in the drainage direction Lf4 in the exhaust pipe 3c connecting the closed space Q and the electric drain 6, and drained in the drainage 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 can improve the installation and management of the indoor exhaust floor structure 100. In addition, the electric drain 6 may be an electric check valve. In addition, the electric drain 6 may be drilled in at least one of the various main plates constituting the indoor exhaust floor material 1.

[0116] 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.

[0117] According to this embodiment, the exhaust control section 2 controls the exhaust of the indoor air through the exhaust port 11 and the closed space Q. That is, a vertical laminar flow from top to bottom is formed in the indoor space R. 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 100.

[0118] 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 makes it possible to improve the efficiency of exhausting the underfloor space of the indoor exhaust floor structure 100.

[0119] Furthermore, 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 further improves the ease of installation of the indoor exhaust floor structure 100.

[0120] Furthermore, according to this embodiment, the inclination angle θ of the inclined surface 121 of the airflow straightening section 12 decreases toward 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.

[0121] Furthermore, according to this embodiment, the rectifying section 12 is detachable from the second main plate 10b and can pass through the opening of the exhaust port 11. Therefore, with the outer layer 10 of the indoor exhaust floor material 1 in place, the rectifying section 12 can be newly installed or replaced within the outer layer 10. This can further improve the ease of installation of the indoor exhaust floor structure 100.

[0122] Moreover, according to this embodiment, the airflow straightening portion 12 is integrated with the second main plate 10b. This prevents shear displacement and peeling of the airflow straightening portion 12 caused by 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.

[0123] In addition, according to this embodiment, the first main plate 10f and the second main plate 10b that form the closed space Q, and the exhaust port 11 drilled in the first main plate 10f are provided. Therefore, it is possible to easily form an under-floor space in a room that does not have an under-floor space. This improves the ease of installation of the indoor exhaust floor structure 100.

[0124] According to this embodiment, the cleaning method for the indoor exhaust floor structure 100 includes a cleaning liquid supply step of supplying the cleaning liquid L to the enclosed space Q through the exhaust port 11, and a cleaning liquid drainage step of draining the cleaning liquid L from the enclosed space Q by operating the exhaust control unit 2. This makes it easy to clean the enclosed space Q. This improves the ease of installation of the indoor exhaust floor structure 100 as well as the manageability.

[0125] Furthermore, according to this embodiment, the cleaning method for the indoor exhaust floor structure 100 includes a cleaning liquid supply step of supplying the cleaning liquid L to the enclosed space Q through the exhaust port 11, and a cleaning liquid drain step of draining the cleaning liquid L from the enclosed space Q by operating the electric drain port 6 connected to the enclosed space Q. This makes it possible to easily clean the enclosed space Q. This improves the ease of installation of the indoor exhaust floor structure 100 as well as the manageability.

[0126] Although some 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 spirit of the invention. These embodiments and their modifications are included in the scope and spirit of the invention, and are included in the scope of the invention and its equivalents described in the claims. [Explanation of symbols]

[0127] 100 Indoor exhaust floor structure 1. Indoor exhaust flooring 10f 1st main plate 10b 2nd main plate 101 First end 102 Second end 103 Gap 11 Exhaust port 12 Rectifier 120 Top 121 Slope 122 Bottom 13 Filters 2 Exhaust control section 3. Exhaust pipe 4 Support part 40 Ventilation Channel 5 Existing exhaust equipment 6 Electric drain θ Tilt angle R Indoor O Outdoors Q closed space L Cleaning Solution f, F Exhaust direction X 1st direction Y Second direction Z depth direction X' 1st horizontal direction Y' 2nd horizontal direction Z' vertical direction

Claims

1. 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 that are spaced apart from each other and face each other to form a closed space; an exhaust control unit that controls exhaust from the room through the exhaust port of the room exhaust floor material and the enclosed space; To be prepared An indoor exhaust floor structure characterized by the above.

2. The indoor exhaust floor material further has a straightening portion provided on the inner surface of the second main plate on the outdoor side among the plurality of main plates so that a protrusion having an inclined surface whose diameter increases from the exhaust port in the depth direction overlaps with the exhaust port when viewed in the depth direction. The indoor exhaust floor structure according to claim 1 .

3. 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 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.

3. The indoor exhaust floor structure according to claim 1 or 2.

4. The flow straightening portion has an inclination angle of the inclined surface that decreases in a depth direction from the exhaust port.

3. The indoor exhaust floor structure according to claim 2 .

5. The airflow rectifying portion is detachable from the second main plate and can pass through the exhaust port.

3. The indoor exhaust floor structure according to claim 2 .

6. The airflow regulating portion is integral with the second main plate.

3. The indoor exhaust floor structure according to claim 2 .

7. An indoor exhaust floor material for exhausting indoor air to the outside, The exhaust port is provided in the first main plate on the indoor side among a plurality of main plates that are spaced apart from each other and face each other to form a closed space. An indoor exhaust flooring material characterized by the above.

8. A cleaning method for an indoor exhaust floor structure that exhausts indoor air to the outside, comprising the steps of: a cleaning liquid supplying step of supplying cleaning liquid to the closed space through an exhaust port of an indoor exhaust flooring material having an exhaust port drilled in a first main board on the indoor side of a plurality of waterproof main boards that are spaced apart from each other and face each other to form a closed space; a cleaning liquid draining step of draining the cleaning liquid from the closed space by an operation of an exhaust control unit that controls exhaust from the room through the exhaust port of the indoor exhaust floor material and the closed space after the cleaning liquid is supplied by the cleaning liquid supplying step; Having A method for cleaning an indoor exhaust floor structure, comprising:

9. A cleaning method for an indoor exhaust floor structure that exhausts indoor air to the outside, comprising the steps of: a cleaning liquid supplying step of supplying cleaning liquid to the closed space through an exhaust port of an indoor exhaust flooring material having an exhaust port drilled in a first main board on the indoor side of a plurality of waterproof main boards that are spaced apart from each other and face each other to form a closed space; a cleaning liquid draining step of draining the cleaning liquid from the closed space by operating an electric drain port connected to the closed space after the cleaning liquid is supplied by the cleaning liquid supplying step; Having A method for cleaning an indoor exhaust floor structure, comprising:

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