Steel floor backing set, heating and cooling system, and construction method of steel floor backing set

Abstract

To provide a steel floor backing set, a heating and cooling system, and a construction method of the steel floor backing set capable of comparatively easily realizing floor radiation heating and cooling.SOLUTION: A steel floor backing set 10 includes: a plurality of sleeper steels 11; a plurality of joist steels 15 arranged on the plurality of sleeper steels 11 so as to cross each other; a floor plate 18 arranged on the plurality of joist steels 15; and a temperature-controlled gas flow passage forming member 20 for forming a flow passage of a gas SA whose temperature is adjusted. The floor plate 18 partitions a space into an above-floor space AF, and an underfloor space BF in which the plurality of sleeper steels 11 and the joist steel 15 are present. The temperature-controlled gas flow passage forming member 20 is arranged in the underfloor space BF along the joist steel 15 so as to cross over the plurality of sleeper steels 11, and an inflow port for taking in the temperature-controlled gas SA supplied to the underfloor space BF is formed. A heating and cooling system 1 includes the steel floor backing set 10 and a temperature control device 91 for generating the temperature-controlled gas SA to be supplied to the underfloor space BF.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present disclosure relates to a steel floor substructure set, a heating and cooling system, and a method for constructing a steel floor substructure set, and in particular to a steel floor substructure set, a heating and cooling system, and a method for constructing a steel floor substructure set that are suitable for heating and cooling by radiation. [Background technology]

[0002] Gymnasiums are sometimes used as evacuation shelters in the event of a disaster. When air conditioners are installed in the ceiling of gymnasiums constructed with steel floor framing for cooling or heating (hereinafter referred to as "heating and cooling"), heating in extremely cold weather may not eliminate the cold in the living area on the floor, and cooling in extremely hot weather may not achieve the expected cooling effect due to radiant heat from the ceiling, making them inconvenient for use as evacuation shelters. To address these inconveniences, gymnasiums constructed with steel floor framing may use floor radiant heating and cooling. This floor radiant heating and cooling system includes joist steel beams with outlets formed to allow temperature-controlled air to flow out, and tensile steel beams that support the joist steel beams, and the areas where the joist steel beams and tensile steel beams intersect and come into contact are connected by connecting holes (see, for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Publication No. 2023-077655 Summary of the Invention [Problem to be solved by the invention]

[0004] However, the heating and cooling system described in Patent Document 1 requires processing the steel joists and tensile members that make up the steel floor structure, which requires a lot of processing time and is particularly difficult to apply to existing gymnasiums.

[0005] In view of the above-mentioned problems, the present disclosure relates to providing a steel floor substructure set, a heating and cooling system, and a method for constructing a steel floor substructure set that can realize floor radiant heating and cooling relatively easily. [Means for solving the problem]

[0006] A steel floor base set according to a first aspect of the present disclosure comprises a plurality of steel joists arranged parallel to one another, a plurality of steel joists arranged parallel to one another on top of the plurality of steel joists and crossing the plurality of steel joists, floorboards arranged on top of the plurality of steel joists, dividing an above-floor space into an underfloor space in which the plurality of steel joists and the plurality of steel joists are present, and a temperature-regulating gas flow path forming member that forms a flow path for a temperature-regulated gas, which is a temperature-regulated gas, and is arranged in the underfloor space on top of the plurality of steel joists and crossing the plurality of steel joists, along at least one of the plurality of steel joists, and the temperature-regulating gas flow path forming member has an inlet formed therein for taking in the temperature-regulating gas supplied to the underfloor space.

[0007] By configuring it in this manner, it is possible to provide a configuration that can achieve floor radiant heating and cooling relatively easily without processing the joist steel or joist steel and without impairing the function of the steel floor base components.

[0008] Furthermore, a steel floor substructure set according to a second aspect of the present disclosure is a steel floor substructure set according to the first aspect of the present disclosure, which includes a plurality of temperature-regulating gas flow path forming members, each of which is arranged between adjacent joist steel beams with its opening surface facing upward, and which cooperates with the floorboards that block the opening surface to form a flow path for the temperature-regulating gas.

[0009] With this configuration, it becomes possible to transfer the cold or hot heat contained in the temperature-control gas flowing through the temperature-control gas flow path to the floorboard by convective heat transfer.

[0010] Furthermore, a steel floor substructure set according to a third aspect of the present disclosure is a steel floor substructure set according to the first or second aspect of the present disclosure, which includes a plurality of temperature-regulating gas flow path forming members, and each of the temperature-regulating gas flow path forming members is arranged inside the joist steel.

[0011] With this configuration, the cold or hot heat contained in the temperature-controlling gas flowing through the temperature-controlling gas flow path can be transferred to the floorboards by heat transfer via the joist steel.

[0012] In addition, a heating and cooling system according to a fourth aspect of the present disclosure comprises a steel floor underlayment set according to any one of the first to third aspects of the present disclosure, and a temperature control device that generates the temperature-controlled gas to be supplied to the underfloor space.

[0013] With this configuration, it is possible to generate temperature-adjusted gas for use in floor radiant heating and cooling.

[0014] In addition, a method for constructing a steel floor substructure set according to a fifth aspect of the present disclosure is a method for constructing a steel floor substructure set according to the third aspect of the present disclosure, and includes the steps of: peeling off the floor panels of the steel floor substructure, which is composed of components including a plurality of the joist steels, a plurality of the joist steels, and the floor panels, along the direction in which the joist steels extend so that the ends of each of the joist steels can be seen from the space above the floor; placing the temperature-control gas flow path forming member, which is made of a flexible material, inside the joist steel; and installing the floor panels in the areas where the floor panels have been peeled off.

[0015] By configuring it in this manner, it is possible to relatively easily install a temperature-regulating gas flow path forming member in an existing steel floor assembly in which a temperature-regulating gas flow path forming member is not installed, and to construct a steel floor substructure set. [Effects of the Invention]

[0016] According to the present disclosure, it is possible to provide a configuration that can achieve floor radiant heating and cooling relatively easily without processing the joist steel or joist steel and without impairing the function of the steel floor substructure components. [Brief explanation of the drawings]

[0017] [Figure 1](A) is an oblique view showing the general configuration of a heating and cooling system according to one embodiment of the present disclosure, and (B) is a partial oblique view of a steel floor substructure set according to the first embodiment of the present disclosure that is equipped with the heating and cooling system. [Figure 2] (A) is an oblique view of the flow path member provided in the steel floor base set according to the first embodiment of the present disclosure, viewed from the opening side; (B) is an oblique view of the flow path member, viewed from the bottom side; and (C) is an oblique view of a head applicable to the flow path member. [Figure 3] (A) is an oblique view from the opening side of a modified example of a flow path member provided in a steel floor base set according to the first embodiment of the present disclosure, and (B) is an oblique view from the bottom side of the flow path member according to the modified example. [Figure 4] (A) is an oblique view showing the general configuration of a heating and cooling system relating to another embodiment of the present disclosure, (B) is an oblique view of the flow path member and its surroundings of a steel floor substructure set relating to a second embodiment of the present disclosure that is provided in the heating and cooling system, and (C) is an oblique view of the flow path member and its surroundings relating to a modified example of the steel floor substructure set. [Figure 5] 10 is a flowchart illustrating a procedure for constructing a steel floor base set according to a third embodiment of the present disclosure. DETAILED DESCRIPTION OF THE INVENTION

[0018] Hereinafter, an embodiment will be described with reference to the drawings. In the drawings, identical or similar reference numerals are used to designate identical or corresponding components, and redundant explanations will be omitted.

[0019] First, with reference to Figures 1(A) and 1(B), a heating and cooling system 1 according to an embodiment of the present disclosure and a steel floor substructure set 10 according to a first embodiment of the present disclosure that is provided in the heating and cooling system 1 will be described. Figure 1(A) is a perspective view showing the schematic configuration of the heating and cooling system 1, and Figure 1(B) is a partial perspective view of the steel floor substructure set 10. The heating and cooling system 1 typically applies floor radiant heating and cooling to steel floor substructure components (JIS A6519) for gymnasiums, and includes a steel floor substructure set 10 (hereinafter simply referred to as "substructure set 10") and a temperature control device 91.

[0020] In this embodiment, the temperature control device 91 is a device that generates air (hereinafter referred to as "temperature-controlled air SA") adjusted to a temperature that allows radiant heating and cooling of the occupied area that the heating and cooling system 1 is intended to cool or heat (hereinafter referred to as "heating and cooling"). The temperature-controlled air SA is gaseous air that has been temperature-controlled, and is a form of temperature-controlled gas. A packaged air conditioner is typically used as the temperature control device 91, but an air handling unit or the like may also be used. In this embodiment, by installing the temperature control device 91 in combination with the base set 10, the temperature-controlled air SA can be supplied to the base set 10. The base set 10 will be described below.

[0021] [First embodiment] In this embodiment, the base set 10 is configured by adding a temperature-controlled air flow path forming member 20 (hereinafter simply referred to as "flow path member 20"), which is a member for realizing radiant heating and cooling, to a steel floor base component for gymnasiums (JIS A6519). In other words, the base set 10 comprises a steel floor base component for gymnasiums and the flow path member 20. A steel floor base component is generally defined as a member made up of main components such as support legs, joists, floor joists, and floor panels. The flow path member 20 is a member that forms a flow path for the temperature-controlled air SA, and corresponds to a temperature-controlled gas flow path forming member. The steel floor base component for gymnasiums comprises steel joists 11, floor joist steel 15, and floorboards 18.

[0022] The joist steel beams 11 are members that support the joist steel beams 15. In this embodiment, the joist steel beams 11 are elongated members formed from plated steel sheets. In this embodiment, the joist steel beams 11 have a "hat-shaped" cross section perpendicular to the longitudinal direction. The "hat-shaped" shape is a shape resembling a hat with a brim around the periphery. For example, a hollow prism with a rectangular cross section is cut in the middle of the base of the rectangle, and the cut base is then rotated 180° outward at the intersections with the side edges. A plurality of joist steel beams 11 (five in the example shown in Figure 1(A)) are arranged parallel to one another. "Parallel arrangement" here refers to a degree of parallelism that allows the steel floor framing to function. The bottom of each joist steel beam 11 is supported by an appropriate number of support legs 12, and the beams are arranged in a floating state above the floor foundation. The support legs 12 preferably have adjustment bolts that can adjust the distance between the floor base and the steel tensile members 11, and buffer materials are preferably provided at the contact points with the steel tensile members 11.

[0023] The joist steel 15 is a member that supports the floorboards 18 and is placed on the plurality of tensile steel beams 11. The joist steel beams 15 are typically similar in material and shape to the tensile steel beams 11. That is, the joist steel beams 15 are typically hollow, elongated members formed from plated steel plates, and have a "hat-shaped" cross section perpendicular to the longitudinal direction. The joist steel beams 15 typically have smaller cross-sectional dimensions (width and height) perpendicular to the longitudinal direction than the tensile steel beams 11. A plurality of joist steel beams 15 (11 in the example shown in FIG. 1(A)) are arranged parallel to one another and placed on the tensile steel beams 11. "Arranged parallel" here has the same meaning as the "parallel" in the arrangement of the plurality of tensile steel beams 11 described above. Each joist steel beam 15 is arranged across the plurality of tensile steel beams 11 and also intersects with each tensile steel beam 11. In this embodiment, each joist steel 15 is perpendicular to each joist steel 11, but they may also intersect at an angle other than 90° (for example, 75° to 85°) depending on the purpose and shape of the living area to be heated and cooled.

[0024] The floorboards 18 are placed on a plurality of joists 15 to form the floor surface of the living area to be heated and cooled. The floorboards 18 can be made of plywood, particle board, sandwich plywood, or the like. In the example shown in FIG. 1(A), only two floorboards 18 are shown to illustrate the configuration of the steel joists 11 and the steel joists 15. However, in reality, a plurality of floorboards 18 are laid out so that the entire structure below the floorboards 18 is covered by the floorboards 18. By laying the plurality of floorboards 18, the space is divided into an upper above-floor space AF and a lower underfloor space BF, with the floorboards 18 as the boundary. The above-floor space AF includes the living area to be heated and cooled. The underfloor space BF contains the steel joists 11 and the steel joists 15. The floorboards 18 may be used as a base material, with a finishing material installed on top of the floorboards 18, or the floorboards 18 themselves may be used as the finishing material.

[0025] Steel floor substructure components for gymnasiums can be constructed by combining the joists 11, joist steel 15, and floorboards 18 configured as described above. However, since the steel floor substructure components for gymnasiums themselves do not have the configuration to perform floor radiant heating and cooling, in this embodiment, the configuration for constructing the heating and cooling system 1, such as the temperature control device 91 and flow path member 20, described above, is provided in addition to the steel floor substructure components for gymnasiums.

[0026] The flow path member 20 is a member that forms a flow path for the temperature-controlled air SA. In this embodiment, the flow path member 20 is an elongated member having a length similar to that of the joist steel 15 and is a member that is open along the longitudinal direction. In this embodiment, the flow path member 20 has a cylindrical shape with a rectangular cross section perpendicular to the longitudinal direction, with one of the four side surfaces of the cylindrical shape removed (i.e., a C-shaped cross section). As shown in FIG. 1(B), of the four side surfaces of the flow path member 20, the open surface is referred to as the opening surface 21, the surface opposite thereto is referred to as the bottom surface 22, and a pair of surfaces between the opening surface 21 and the bottom surface 22 are referred to as the side surfaces 23. The flow path member 20 has a flow path 24 for the temperature-controlled air SA formed inside the bottom surface 22 and the pair of side surfaces 23. The flow path member 20 is typically formed of a viscoelastic material such as an elastomer resin and is flexible. In this embodiment, the flow path member 20 is placed on the plurality of joist steel beams 11, with the opening surface 21 facing upward, between a plurality of adjacent joist steel beams 15, typically arranged parallel to the joist steel beams 15. Therefore, in this embodiment, a plurality of flow path members 20 are provided. The arrangement of the flow path member 20 between adjacent joist steel beams 15 is one form of arrangement along the joist steel beams 15. The height of the flow path member 20 is typically formed to be the same as the height of the joist steel beams 15. Therefore, in the base set 10, the upper ends of the pair of side surfaces 23 of the flow path member 20 contact the back surface of the floor board 18 (i.e., the surface facing the underfloor space BF), and the flow path 24 can be seen as a culvert surrounded by the floor board 18, the bottom surface 22, and the pair of side surfaces 23. In other words, the flow path member 20 forms the flow path 24 in cooperation with the floor board 18 that closes the opening surface 21.

[0027] 2(A) and 2(B), the configuration of the flow path member 20 will be described in more detail. FIG. 2(A) is a perspective view of the flow path member 20 as viewed from the opening surface 21 side, and FIG. 2(B) is a perspective view of the flow path member 20 as viewed from the bottom surface 22 side. In this embodiment, the flow path member 20 has an inlet 25 formed in the bottom surface 22 as shown in FIG. 2(B). The inlet 25 is an opening for introducing temperature-controlled air SA into the flow path member 20 and corresponds to an inlet. A plurality of inlets 25 are formed at intervals in the longitudinal direction of the bottom surface 22. In this embodiment, the flow path member 20 is provided with a magnet 29 for attaching to the tensile steel 11. The magnet 29 is fixed to the outside of the bottom surface 22. The magnet 29 is provided at a position that contacts the tensile steel 11 when the flow path member 20 is placed on the tensile steel 11.

[0028] In this embodiment, the flow path member 20 has a nozzle 26 provided inside the flow path 24, as shown in FIG. 2(A). In this embodiment, the nozzle 26 is formed in a cylindrical shape. However, the cross-sectional shape perpendicular to the axis is not limited to a circle, and may be a polygon such as a rectangle, hexagon, or octagon, an ellipse, or other shape. The nozzle 26 is disposed with its first end face in contact with the inner surface of the bottom surface 22 so that the internal space is connected to the inlet 25, in other words, so that the nozzle 26 covers the inlet 25. The nozzle 26 is typically disposed with its axis extending perpendicular to the bottom surface 22. Therefore, the second end face of the nozzle 26, opposite the first end face, faces the back surface of the floor plate 18. The number of nozzles 26 provided corresponds to the number of inlets 25.

[0029] The nozzle 26 is formed so that its axial length is shorter than the height of the side surface 23 (i.e., the distance between the opening surface 21 and the bottom surface 22). The diameter and axial length of the nozzle 26 are preferably set to a size that allows the temperature-controlled air SA, which passes through the nozzle 26 from the inlet 25 and exits the second end surface of the nozzle 26, to collide with the floorboard 18 as a jet. The term "jet" as used here refers to a phenomenon in which a fluid with a certain velocity is ejected from a small hole into a space as a substantially unidirectional flow, and is typically a flow discharged at a flow velocity of approximately 3 m / s to 5 m / s. For this reason, the diameter of the nozzle 26 is preferably determined so that the temperature-controlled air SA is discharged at a flow velocity of approximately 3 m / s to 5 m / s, taking into consideration the static pressure of the temperature-controlled air SA. In addition, the axial length of the nozzle 26 is preferably determined so that the distance between the second end face of the nozzle 26 and the floor board 18 is such that the temperature-controlled air SA discharged from the nozzle 26 collides with the floor board 18 at a flow velocity of approximately 3 m / s to 5 m / s.

[0030] The nozzles 26 are preferably provided at intervals that minimize temperature unevenness in the area where the temperature of the floorboard 18 changes when the temperature-controlled air SA discharged from the nozzles 26 collides with the floorboard 18 and transfers cold or hot heat from the temperature-controlled air SA to the floorboard 18. Since the inlets 25 are provided in a number and size corresponding to the nozzles 26, the positions and sizes are formed to correspond to the required number and size of nozzles 26. In other words, the size, number, and arrangement of the inlets 25 depend on the nozzles 26.

[0031] The head 27 shown in FIG. 2(C) may be attached to the second end face of the nozzle 26. The head 27 generally has a configuration in which a triangular tube and a cylinder are connected. The triangular tube portion of the head 27 is a hollow triangular prism, and in this embodiment, the pair of triangles at the base are right-angled isosceles triangles. The cylindrical portion of the head 27 has an inner diameter large enough to fit into the second end face of the nozzle 26, and an axial length large enough to stably attach to the nozzle 26. One end of the cylindrical portion of the head 27 is connected to the side with the largest area of ​​the three sides of the triangular tube portion, and this connection connects the cylindrical portion and the triangular tube portion. When the cylindrical portion of the head 27 is attached to the nozzle 26, the two sides not connected to the cylindrical portion face the back surface of the floorboard 18 at a 45° angle. The head 27 has horizontally extending slits formed on each of two side surfaces that face each other at an angle of 45° relative to the rear surface of the floorboard 18. The slits in the head 27 are formed to a size that allows the temperature-controlled air SA to collide as a jet with the floorboard 18. When the head 27 is attached to the nozzle 26, it is advisable to determine the height of the nozzle 26 so that the slits formed in the head 27 are positioned so that the temperature-controlled air SA discharged from the slits can collide as a jet with the floorboard 18.

[0032] Referring again primarily to FIGS. 1(A) and 1(B), the configuration of the base set 10 will be described. In this embodiment, the base set 10 includes a return chamber 31 provided on the outside of each of the two outermost steel tensile members 11 among the multiple steel tensile members 11 arranged in the array. The return chamber 31 collects the temperature-controlled air SA that has flowed through the flow paths 24 in the multiple flow path members 20. In this embodiment, each return chamber 31 extends adjacent to the steel tensile members 11 and is formed in the shape of an elongated rectangular parallelepiped having approximately the same length as the steel tensile members 11. Each return chamber 31 is typically supported by a support member 35. The support member 35 may be attached to the steel tensile members 11. The top surface of each return chamber 31 is connected to the bottom surface 22 of one end of each of the multiple flow path members 20 arranged in the array. A communication hole (not shown) is formed at the connection between the top surface of the return chamber 31 and the bottom surface 22 of each flow path member 20, and the flow path 24 inside each flow path member 20 is connected to the inside of the return chamber 31. That is, of the two return chambers 31 provided, one return chamber 31 connects one end of each flow path member 20, and the other return chamber 31 connects the other end of each flow path member 20. In addition, as shown in FIG. 1(B), end caps 39 are attached to the ends on both sides of each flow path member 20, so that the temperature-controlled air SA in the flow path 24 does not flow out from both ends of the flow path member 20.

[0033] Each return chamber 31 has an outlet 33 formed on its upper surface, through which the temperature-controlled air SA collected inside the return chamber 31 flows out into the above-floor space AF. In the example shown in FIG. 1(A), the outlets 33 formed in each return chamber 31 are provided at both ends of a single joist steel 15, but they may also be provided at positions that are approximately diagonal on the overall rectangular floor surface so that the distance between the outlets 33 is as large as possible. In the example shown in FIG. 1(A), one outlet 33 is formed per return chamber 31, but multiple outlets 33 may be formed per return chamber 31. In addition, a grate (including punched metal) may be attached to each outlet 33 to prevent objects from falling into the return chamber 31.

[0034] When installing the above-described base set 10 in a building, first, the support legs 12 are fixed onto the building's floor base (e.g., a concrete slab) with anchors or the like. The layout of the support legs 12 is determined according to the steel joists 11 to be laid. The base set 10 is constructed by laying multiple steel joists 11 in parallel at predetermined intervals, and then laying multiple steel joists 15 in parallel at predetermined intervals on the steel joists 11. The predetermined intervals between the multiple steel joists 11 are determined to satisfy the intended standard (in this embodiment, JISA 6519 for steel floor substructure components for gymnasiums). After the support legs 12 are fixed onto the slab, the steel joists 11 are adjusted in length according to the floor area of ​​the above-floor space AF and then placed on the support legs 12 with their longitudinal direction horizontal. Once the tensile steel 11 has been placed on the support legs 12, the tensile steel 11 is fixed to the support legs 12 using fixing bolts (not shown) or the like. After the tensile steel 11 has been fixed to the support legs 12, the return chambers 31 are fixed to the outermost tensile steel 11 with their communication holes (not shown) facing upward. Instead of or in addition to fixing the return chambers 31 to the tensile steel 11, the return chambers 31 may be supported from the floor base of the building using support legs or the like.

[0035] Next, the joist steel beams 15 are placed on the joist steel beams 11. In this embodiment, each joist steel beam 15 is placed so that it is perpendicular to the corresponding joist steel beams 11. At this time, it is preferable to place the edge of the hat-shaped joist steel beam 15 on the top surface of the joist steel beams 11. After the joist steel beams 15 are laid, it is preferable to fix the contact points between the joist steel beams 15 and the joist steel beams 11 with fixing brackets (not shown). After the placement of the joist steel beams 15 is complete, the flow path members 20 are placed on the joist steel beams 11 between the adjacent joist steel beams 15. At this time, each flow path member 20 is placed so that the communication holes (not shown) formed at both ends of each flow path member 20 are aligned with the communication holes (not shown) formed in each return chamber 31. In this embodiment, magnets 29 are provided at appropriate positions on the outside of the bottom surface 22 of each flow path member 20, so that each flow path member 20 can be fixed to the tensile steel 11 simply by placing the flow path member 20 on the tensile steel 11. After the flow path members 20 are arranged, floor plates 18 are laid on each of the joist steel 15 and each flow path member 20. By laying the floor plates 18, an above-floor space AF and an under-floor space BF are formed. The floor plates 18 are laid with a cutout at the portion where the outlet 33 of the return chamber 31 is formed. A grid (not shown) is typically installed at the outlet 33.

[0036] The above-described base set 10 can also be constructed in existing gymnasiums. Gymnasiums that use steel gymnasium floor subfloor components typically do not include the flow path members 20 and return chambers 31, unlike the above-described base set 10. However, the steel joists 11, joist steel beams 15, and floorboards 18 are still assembled. To apply the base set 10 to an existing gymnasium configured in this manner, first remove the entire floorboards 18, leaving the steel joists 11 and joist steel beams 15 intact. After removing the floorboards 18, each return chamber 31 with a communicating hole (not shown) is placed in the aforementioned position, and then each flow path member 20 is placed in the aforementioned manner. After each flow path member 20 is placed, the floorboards 18 are laid in the aforementioned manner. At this time, the floorboards 18 used in the previously removed existing gymnasium may be laid, or newly procured floorboards 18 may be laid. In this manner, the base set 10 can be applied to an existing gymnasium.

[0037] For the base set 10 configured as described above, the temperature control device 91 for constructing the heating and cooling system 1 is typically installed in a position where the temperature-controlled air SA blown out from the temperature control device 91 can be supplied to the underfloor space BF. An example of such an arrangement is to position the temperature control device 91 so that its air outlet is located in the underfloor space BF, and supply the temperature-controlled air SA directly to the underfloor space BF. The temperature control device 91 may be installed near the wall of the area where the above-floor space AF is formed, in a room adjacent to the above-floor space AF, or in a room away from the above-floor space AF, and may be configured to use a duct to guide the temperature-controlled air SA to the underfloor space BF.

[0038] Continuing with reference to FIGS. 1(A) to 2(C), the operation (operating status) of the heating and cooling system 1 will be described. The operation of the base set 10 will be described as part of the operation of the heating and cooling system 1. The temperature control device 91 generates temperature-controlled air SA adjusted to a temperature suitable for radiant heating and cooling of the underfloor space AF (depending on the set temperature, for example, 18 to 23°C when cooling, and 30 to 35°C when heating). Radiant heating and cooling is generally designed to reduce the difference between the temperature of the temperature-controlled air and the outside air temperature compared to heating and cooling using only convection (heating and cooling performed by supplying temperature-controlled air into the heated and cooled space), so less energy is required to generate the temperature-controlled air SA. The temperature-controlled air SA generated by the temperature control device 91 is supplied to the underfloor space BF directly or via a duct (not shown).

[0039] As the amount of temperature-controlled air SA supplied to the underfloor space BF increases, the temperature-controlled air SA fills the underfloor space BF. Eventually, due to static pressure, the temperature-controlled air SA flows through the inlets 25 formed on the bottom surface 22 of each flow path member 20 facing the underfloor space BF and into the nozzles 26 provided inside the flow path member 20. The temperature-controlled air SA that flows into each nozzle 26 flows out from the second end surface facing the floorboard 18 and collides with the floorboard 18 as a jet. By colliding with the floorboard 18, the temperature-controlled air SA transfers cold (during cooling) or heat (during heating) to the floorboard 18. This cools or heats the floorboard 18. Note that by colliding the temperature-controlled air SA flowing out of the nozzles 26 with the floorboard 18 as a jet, the heat transfer rate of the cold or heat contained in the temperature-controlled air SA to the floorboard 18 can be improved compared to when the jet is not used. That is, the temperature-controlled air SA collides with the floorboards 18 as a jet, thereby efficiently transferring cold or heat from the temperature-controlled air SA to the floorboards 18. Then, the cold or heat is radiated from the cooled or heated floorboards 18 to the above-floor space AF, thereby cooling or heating the above-floor space AF. Because the cold or heat is radiated from the floorboards 18 to the above-floor space AF, the floor occupancy area can be cooled or heated effectively.

[0040] The temperature-controlled air SA that has flowed out of the nozzle 26 and impinged on the floorboard 18, thereby providing cold or heat to the floorboard 18, enters the flow path 24 on the outside of the nozzle 26 inside the flow path member 20, and flows through the flow path 24 toward one of a pair of return chambers 31 connected to both ends of the flow path member 20. Because the temperature-controlled air SA flowing through the flow path 24 toward the return chamber 31 has already provided cold or heat to the floorboard 18, its temperature is closer to the ambient temperature (e.g., outside air temperature or the temperature of an unconditioned room) than when it flowed into the nozzle 26 from the inlet 25. In other words, the temperature of the temperature-controlled air SA flowing through the flow path 24 is higher during cooling and lower during heating than when it flowed into the nozzle 26 from the inlet 25.

[0041] When the temperature-controlled air SA flowing through the flow paths 24 of each flow path member 20 reaches the position of the return chamber 31, it flows into the return chamber 31 through a communication hole (not shown). In this way, the return chamber 31 collects the temperature-controlled air SA from each flow path member 20. The temperature-controlled air SA that flows into the return chamber 31 from each flow path member 20 flows inside the return chamber 31 toward the outlet 33. The temperature-controlled air SA that reaches the outlet 33 flows into the above-floor space AF through the outlet 33 and convects inside the above-floor space AF. The temperature-controlled air SA that flows into the above-floor space AF is usually at a temperature equal to or lower than the floorboards 18 during cooling and higher than the floorboards 18 during heating, and therefore contributes to the heating and cooling of the above-floor space AF. The temperature-controlled air SA that flows into the above-floor space AF is then returned to the temperature control device 91, for example, via a return air duct (not shown), where its temperature is adjusted and then supplied again to the underfloor space BF. Alternatively, the temperature-controlled air SA inside the above-floor space AF is released into the outside air, and the air released into the outside air is supplied to the under-floor space BF after being temperature-controlled by the temperature control device 91. After the temperature-controlled air SA is supplied to the under-floor space BF, the above-mentioned action is repeated.

[0042] As described above, with the base set 10 according to this embodiment, the flow path member 20 is installed without processing the steel gymnasium floor subfloor components. This reduces the amount of processing required and adds heating and cooling functionality while maintaining the functionality of the steel gymnasium floor subfloor components. Furthermore, since the flow path member 20 is formed of a viscoelastic material such as an elastomer resin, the flow path member 20 does not impede the deflection of the floorboards 18 when a force that causes deflection acts on the floorboards 18, thereby maintaining the functionality of the steel gymnasium floor subfloor components. Furthermore, with the heating and cooling system 1 according to this embodiment, the temperature-controlled air SA flowing out of the nozzles 26 of the flow path member 20 is caused to impinge on the floorboards 18 as a jet, thereby efficiently transferring the cold or hot energy contained in the temperature-controlled air SA to the floorboards 18.

[0043] [Modification of the first embodiment] Next, a flow path member 20A according to a modified example will be described with reference to Figures 3(A) and 3(B). The flow path member 20A can be applied in place of the flow path member 20 (see Figures 2(A) and 2(B)) in the base set 10 shown in Figure 1(A) and the heating and cooling system 1 including the same. The flow path member 20A does not have the inlet 25 formed in the flow path member 20 (see Figures 2(A) and 2(B)) and the nozzle 26 (including the head 27 as necessary) provided therein. The flow path member 20A has a notch 28 formed therein, which was not formed in the flow path member 20 (see Figures 2(A) and 2(B)).

[0044] In the flow path member 20A, a plurality of notches 28 are formed at predetermined intervals on the upper end edge of each of the pair of side surfaces 23. Each notch 28 is an opening for introducing the temperature-controlled air SA into the inside of the flow path member 20A and corresponds to an inlet. The plurality of notches 28 formed at predetermined intervals on the upper end edge of each of the pair of side surfaces 23 are typically misaligned in the longitudinal direction of the flow path member 20A from the position of the notch 28 formed on one side surface 23 to the position of the notch 28 formed on the other side surface 23. This misalignment in the longitudinal direction of the notches 28 is typically half the distance between adjacent notches 28 formed on one side surface 23. In other words, typically, the notch 28 on one side surface 23 is located midway between adjacent notches 28 on the other side surface 23 in the longitudinal direction of the flow path member 20A. Furthermore, each notch 28 formed in the flow path member 20A is preferably formed to a size that allows air to flow from the outside to the inside of the flow path member 20A as a jet (i.e., typically at a flow velocity of approximately 3 m / s to 5 m / s).

[0045] The flow path member 20A may be formed so that the distance between the pair of side surfaces 23 increases as one moves from the bottom surface 22 toward the opening surface 21. In other words, each of the pair of side surfaces 23 does not have to be perpendicular to the bottom surface 22. The angle between each side surface 23 and the bottom surface 22 may be approximately 90° to 105°, or may be 95° to 100°. The other configuration of the flow path member 20A, including the material, shape, and size, is typically the same as that of the flow path member 20 (see FIGS. 2(A) and 2(B)). When installing a base set employing the flow path member 20A instead of the flow path member 20 (see FIGS. 2(A) and 2(B)) in a building, the above-described installation procedure may be followed, simply by replacing the flow path member 20 (see FIGS. 2(A) and 2(B)) with the flow path member 20A.

[0046] The operation (operating conditions) when the flow path member 20A is used instead of the flow path member 20 (see FIGS. 2A and 2B) in the base set 10 shown in FIG. 1A and the heating and cooling system 1 including the same is as follows. The process from generating temperature-controlled air SA in the temperature control device 91 to supplying it to the underfloor space BF is the same as when the flow path member 20 (see FIGS. 2A and 2B) is used. As the amount of temperature-controlled air SA supplied to the underfloor space BF increases, the temperature-controlled air SA fills the underfloor space BF. Then, due to static pressure, the temperature-controlled air SA flows through each notch 28 formed in the side surface 23 of each flow path member 20A facing the underfloor space BF and into the flow paths 24 inside the flow path member 20A. The temperature-controlled air SA flowing in through each notch 28 flows inside the flow path 24 while diffusing along the back surface of the floorboard 18. When the temperature-controlled air SA flows along the back surface of the floorboard 18, it contacts the floorboard 18 while flowing and transfers cold (during cooling) or heat (during heating) to the floorboard 18. This cools or heats the floorboard 18. Here, if the size of the notch 28 is formed so that the temperature-controlled air SA passing through the notch 28 forms a jet, the boundary film formed between the temperature-controlled air SA and the floorboard 18 can be broken as the temperature-controlled air SA flows. A boundary film is an extremely thin region that exists at the phase boundary when fluids are in relative motion and maintains a laminar flow state. Generally, if a boundary film in which air stagnates between the floorboard 18 and the flow of the temperature-controlled air SA exists, the surface heat transfer resistance increases, and the cold or heat contained in the temperature-controlled air SA is not efficiently transferred to the floor material F. However, breaking the boundary film can improve the heat transfer coefficient. Note that cold or hot heat is radiated from the cooled or heated floorboards 18 to the above-floor space AF, cooling or heating the above-floor space AF, in the same way as when the flow path member 20 (see Figures 2(A) and 2(B)) is used. Also, the temperature-controlled air SA that flows into the inside of the flow path 24 of the flow path member 20A reaches the above-floor space AF via the return chamber 31, and the flow thereafter is also the same as when the flow path member 20 (see Figures 2(A) and 2(B)) is used. In this way, when the flow path member 20A is used, the same effects as when the flow path member 20 (see Figures 2(A) and 2(B)) are achieved.

[0047] [Second embodiment] Next, with reference to FIGS. 4(A) and 4(B), a heating and cooling system 2 according to another embodiment of the present disclosure and a steel floor base set 10A according to a second embodiment of the present disclosure (hereinafter simply referred to as "base set 10A") provided in the heating and cooling system 2 will be described. FIG. 4(A) is a perspective view showing a schematic configuration of the heating and cooling system 2, and FIG. 4(B) is a perspective view showing the flow path member 20 and its surroundings provided in the base set 10A. In this embodiment, the heating and cooling system 2 differs from the base set 10 (see FIGS. 1(A) and 1(B)) in the configuration of the base set 10A, while the other configurations, including the temperature control device 91, are the same as those of the heating and cooling system 1 (see FIGS. 1(A) and 1(B)). Below, the configuration of the base set 10A will be described, focusing mainly on the differences from the base set 10 (see FIGS. 1(A) and 1(B)).

[0048] The base set 10A differs from the base set 10 (see FIGS. 1(A) and 1(B)) in that the flow path members 20 are not provided between adjacent joist steel pieces 15, but are arranged inside each joist steel piece 15 as shown in FIG. 4(B). Arranging the flow path members 20 inside the joist steel pieces 15 is one form of arranging them along the joist steel pieces 15. The flow path members 20 included in the base set 10A are typically the same in material, shape, and size as the flow path members 20 included in the base set 10 (see FIGS. 1(A) and 1(B)). The flow path members 20 are arranged inside the joist steel pieces 15 with their opening surfaces 21 facing upward. In the base set 10A, the temperature-controlled air SA flowing out from the nozzles 26 collides with the top surfaces of the joist steel pieces 15. The flow path member 20 has a second end face of the nozzle 26 (i.e., the face facing the top face of the joist steel 15) positioned away from the top face of the joist steel 15 so that the temperature-controlled air SA flowing out of the nozzle 26 impinges on the top face of the joist steel 15 as a jet. In the base set 10A, the upper ends of a pair of side faces 23 of the flow path member 20 contact the top face of the joist steel 15, preventing the temperature-controlled air SA from passing between the upper ends of the side faces 23 and the top face of the joist steel 15. The flow path member 20 is typically formed of a viscoelastic material such as an elastomer resin. Therefore, even if the height of the side faces 23 is slightly greater than the internal height of the joist steel 15, the side faces 23 can elastically deform and fit within the joist steel 15. In the base set 10A, a head 27 (see FIG. 2(C)) may also be attached to the second end face of the nozzle 26. The rest of the configuration of the base set 10A, including the joists 11, the joists 15, the floorboards 18, etc., is the same as that of the base set 10 (see FIGS. 1(A) and 1(B)).

[0049] The procedure for installing the base set 10A on a building is generally the same as the procedure for installing the base set 10 (see FIGS. 1(A) and 1(B)) on a building. However, with the base set 10A, it is preferable to place the flow path members 20 after the tensile steel 11 and the return chambers 31 are installed and before the joist steel 15 is placed. At this time, the flow path members 20 are typically placed on the tensile steel 11 with the opening surface 21 facing upward, so that the communication holes (not shown) formed at both ends of each flow path member 20 are aligned with the communication holes (not shown) formed in each return chamber 31. After each flow path member 20 is placed on the tensile steel 11, it is preferable to place each joist steel 15 on the upper surface of the tensile steel 11 so as to cover each flow path member 20 placed on the tensile steel 11. By covering the flow path member 20 with the joist steel 15, a flow path 24 is formed that is surrounded by the joist steel 15, a bottom surface 22, and a pair of side surfaces 23. After arranging the joist steel 15, the floor boards 18 are laid, and the subsequent procedure is the same as for the base set 10 (see Figures 1(A) and 1(B)).

[0050] The operation (operating conditions) of the heating and cooling system 2 including the above-described base set 10A is the same as that of the heating and cooling system 1 (see FIG. 1(A)), from the point where temperature-controlled air SA is generated by the temperature control device 91 and supplied to the underfloor space BF, passing through the inlets 25 formed on the bottom surface 22 of the flow path member 20 and flowing into each nozzle 26. In the heating and cooling system 2, the temperature-controlled air SA that flows into each nozzle 26 flows out from the second end face and collides as a jet with the top surface of the joist steel 15. By colliding with the top surface of the joist steel 15, the temperature-controlled air SA transfers cold (during cooling) or heat (during heating) to the joist steel 15. By colliding as a jet with the temperature-controlled air SA flowing out of the nozzle 26 with the joist steel 15, cold or heat can be efficiently transferred from the temperature-controlled air SA to the joist steel 15. The cold or heat transferred from the temperature-controlled air SA to the joist steel 15 is further transferred to the floorboards 18 in contact with the joist steel 15. This cools or heats the floorboards 18. The cold or heat is then radiated from the cooled or heated floorboards 18 to the space above the floor AF, effectively cooling or heating the floor occupancy area. The temperature-controlled air SA flows out of the nozzle 26 and gives cold or heat to the floorboards 18 through the joist steel 15, then flows through the flow path 24 and enters the return chamber 31, and then flows into the space above the floor AF, just like the heating and cooling system 1 (see FIG. 1(A)).

[0051] As described above, according to the heating and cooling system 2 of this embodiment, the temperature-controlled air SA flowing out from the nozzle 26 of the flow path member 20 is made to collide as a jet against the joist steel 15 to cool or heat the joist steel 15, and the floorboards 18 can be cooled or heated by heat transfer from the joist steel 15 to the floorboards 18. The other effects of the base set 10A (and the heating and cooling system 2 including it) are the same as those of the base set 10 (and the heating and cooling system 1 including it) shown in Figure 1(A).

[0052] As shown in FIG. 4(C), a flow path member 20A may be placed inside the joist steel 15 in place of the flow path member 20 (see FIG. 4(B)). The flow path member 20A is typically the same as that shown in FIGS. 3(A) and 3(B). When the flow path member 20A is placed inside the joist steel 15, the temperature-controlled air SA supplied to the underfloor space BF flows from the outside of the flow path member 20A through each notch 28 and into the flow path 24 inside the flow path member 20A. The temperature-controlled air SA that flows into the flow path 24 from each notch 28 flows inside the flow path 24 while diffusing along the top surface of the joist steel 15. When the flow path member 20A is used, the base set 10A can be easily constructed in an existing gymnasium. The following describes the procedure for constructing the base set 10A in an existing gymnasium.

[0053] [Third embodiment] 5 is a flowchart illustrating the procedure for constructing a base set 10A employing a flow path member 20A as a method for constructing a steel floor base set according to a third embodiment of the present disclosure. In the following description of the method for constructing the base set 10A employing the flow path member 20A, when referring to the configuration of the base set 10A employing the flow path member 20A, reference will be made to FIGS. 3(A), 3(B), 4(A), and 4(C) as appropriate. Before constructing the base set 10A employing the flow path member 20A, an existing gymnasium using steel gymnasium floor base components typically does not include the flow path member 20A and the return chamber 31 compared to the base set 10A, but the joists 11, joist steel 15, and floorboards 18 are assembled.

[0054] When construction of the base set 10A for the existing gymnasium begins, the floorboards 18 of the existing gymnasium are first peeled off so that the ends of each joist steel 15 are visible from the floor space AF (S1). At this time, the floorboards 18 are typically peeled off continuously along the direction in which the joist steel 11 extends. Two rows of floorboards 18 are peeled off: one row on one end of each joist steel 15 and one row on the other end. Other floorboards 18 that do not reveal the ends of the joist steel 15 even after peeling (i.e., floorboards 18 between the two peeled rows) do not need to be peeled off. In other words, it is sufficient to peel off only some of the floorboards 18 installed in the existing gymnasium. After peeling off some of the floorboards 18, each return chamber 31 with a communication hole (not shown) is installed in the aforementioned position (see FIG. 4(A)) (S2).

[0055] After the return chamber 31 is installed, the flow path member 20A is installed inside each joist steel member 15 (S3). The flow path member 20A is made of a flexible material and can typically be installed using a wiring wire. The wiring wire is used to run electrical wires and other items through conduits such as sheaths that are pre-installed inside buildings or concrete structures. To install the flow path member 20A inside the joist steel member 15 using the wiring wire, first, insert the tip of the wiring wire into one end of the joist steel member 15 exposed by the peeling of the floorboard 18 and feed it toward the other end, and then eject the tip of the wiring wire from the other end of the joist steel member 15. Next, connect one end of the flow path member 20A to the tip of the wiring wire that has ejected from the other end of the joist steel member 15. Then, pull the wiring wire from one end of the joist steel member 15 and retrieve it. When the tip of the wiring wire reaches one end of the joist steel member 15, remove the tip of the wiring wire from the flow path member 20A. In this way, the flow path member 20A is installed inside the joist steel 15. At this time, the flow path member 20A is preferably fixed by magnets 29 to the tensile steel 11 that intersects at various points.

[0056] After the flow path members 20A are installed inside each joist steel 15, floorboards 18 are installed in the areas where the floorboards 18 were previously removed (S4). At this time, the floorboards 18 used in the previously removed existing gymnasium may be installed, or newly procured floorboards 18 may be installed. In this manner, a base set 10A employing the flow path members 20A can be constructed for an existing gymnasium. When the base set 10A employing the flow path members 20A is constructed using this construction method, the number of floorboards 18 that need to be removed can be reduced compared to when constructing the base set 10 (see FIGS. 1(A) and 1(B)) for the previously described existing gymnasium. Therefore, the base set 10A can be constructed for an existing gymnasium easily with a relatively small number of steps. In the construction method of the base set 10A described with reference to Figure 5, the flow path member 20A is installed inside each joist steel 15, but if it can be installed later inside the joist steel 15 placed on the joist steel 11, a flow path member 20 (see Figure 4 (B)) may be installed instead of the flow path member 20A.

[0057] [others] In the above explanation, the temperature-adjusted gas is temperature-adjusted air SA, but gas other than air whose temperature is adjusted may also be used depending on the purpose of the building to which the heating and cooling systems 1 and 2 are applied.

[0058] In the above explanation, the base sets 10, 10A are configured by adding flow path members 20, 20A to steel floor subfloor components for gymnasiums, but they may also be configured for uses other than gymnasiums, with flow path members 20, 20A added to a structure comprising joists, joists, and floorboards.

[0059] In the above explanation, the tensile steel 11 is a long, slender member having a "hat-shaped" cross section perpendicular to the longitudinal direction, but a hollow square steel pipe may also be used. If a square steel pipe is used, both longitudinal end faces are open, and the space between these end faces is surrounded by steel material, functioning as a culvert. The same applies to the joist steel 15.

[0060] In the above explanation, the flow path members 20, 20A are formed from a viscoelastic material such as an elastomer resin, but they may also be formed from a material other than a viscoelastic material, such as a plated steel plate, as long as the function of the steel floor substructure component for the gymnasium is not impaired.

[0061] In the above description, it has been assumed that one flow path member 20, 20A is provided between adjacent joist steel pieces 15 in the base set 10. However, two or more flow path members may be provided in consideration of the spacing between adjacent joist steel pieces 15 and minimizing temperature variations in the floorboards 18 to which the cold or hot heat contained in the temperature-controlled air SA is transferred.

[0062] In the above explanation, the flow path member 20 has a nozzle 26 provided inside the flow path 24, but if the cold or hot heat contained in the temperature-controlled air SA can be transferred to the floor board 18 without providing the nozzle 26, the nozzle 26 does not need to be provided.

[0063] In the above description, two return chambers 31 are provided to connect one end of each flow path member 20, 20A to the other end, but it may also be provided on only one side (i.e., only one).

[0064] In the above description, for convenience, the base set 10 and the base set 10A have been described as separate embodiments, but the two may be combined. That is, the flow path member 20 or the flow path member 20A may be disposed between adjacent joist steel pieces 15, and the flow path member 20 or the flow path member 20A may be disposed inside each joist steel piece 15. [Explanation of symbols]

[0065] 1, 2 Heating and cooling system 10, 10A Underlayment Set (Steel Floor Underlayment Set) 11 Ohiki Hagane 15 Joist steel 18 Floorboards 20, 20A Flow path member (temperature control gas flow path forming member) 21 Opening surface 22 bottom 23 Side 24 flow paths 25 Inlet (inlet) 26 nozzles 28 Notch (inlet) 29 Magnet 91 Temperature control equipment AF Floor space BF Underfloor space SA Temperature-controlled air (temperature-controlled gas)

Claims

1. A plurality of tensile steel beams arranged parallel to each other; a plurality of joist steel beams arranged on the plurality of tensile steel beams so as to cross the plurality of tensile steel beams and be parallel to each other; A floor board arranged on the plurality of joist steel beams, the floor board dividing the space above the floor into an above-floor space and an under-floor space in which the plurality of tensile steel beams and the plurality of joist steel beams are present; a temperature control gas flow path forming member that forms a flow path for a temperature control gas, which is a gas whose temperature is adjusted, and that is disposed on top of the plurality of tensile steel beams, crossing the plurality of tensile steel beams, and along at least one of the plurality of joist steel beams in the underfloor space; the temperature-controlling gas flow path forming member is formed with an inlet for taking in the temperature-controlling gas supplied to the underfloor space, Steel floor subfloor set.

2. a plurality of the temperature control gas flow path forming members; Each of the temperature control gas flow path forming members is disposed between the adjacent joist steel beams with an opening surface facing upward, and forms a flow path for the temperature control gas in cooperation with the floor board that closes the opening surface. The steel floor subfloor set according to claim 1.

3. a plurality of the temperature control gas flow path forming members; Each of the temperature control gas flow path forming members is disposed inside the joist steel. The steel floor subfloor set according to claim 1.

4. The steel floor base set according to any one of claims 1 to 3, a temperature control device that generates the temperature control gas to be supplied to the underfloor space, Heating and cooling system.

5. A method for constructing a steel floor substructure set according to claim 3, comprising: a step of peeling off the floorboards of a steel floor base, which is configured by arranging members including a plurality of the tensile steel beams, a plurality of the joist steel beams, and the floorboards, along the direction in which the tensile steel beams extend so that the ends of each of the joist steel beams can be seen from the space above the floor; a step of placing the temperature control gas flow path forming member formed of a flexible material in the joist steel; and installing the floorboard in the area where the floorboard was removed. How to build a steel subfloor set.

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