Method for manufacturing building components and building component sets used in radiant air conditioning systems.

Abstract

To improve the reliability of building components used in radiant air conditioning systems. [Solution] A building component 10 used in a radiant air conditioning system that contains a liquid inside and utilizes the exchange of heat between the air in a living room 2 and the liquid, characterized in that it comprises a main body 100 made of a resin material and a film material 200 provided on the surface of the main body 100 that faces the living room 2.

Description

Technical Field

[0001] The present invention relates to a building member used for radiant air conditioning and a method for manufacturing a set of building members including the building member.

Background Art

[0002] In recent years, from the perspective of energy conservation and the like, an air conditioning system that combines radiant air conditioning and heat storage technology has attracted attention. As an example of combining radiant air conditioning and latent heat technology, Patent Document 1 discloses an air conditioning system that performs radiant air conditioning by disposing a building member that houses a heat storage medium combining a latent heat storage material and a sensible heat storage material inside a ceiling space on the back side of a panel that forms a ceiling surface. By using both a sensible heat storage material with excellent heat absorption characteristics and a latent heat storage material with excellent heat dissipation characteristics, unstable natural energy can be effectively utilized.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In radiant air conditioning, high reliability is required for building members. For example, even when a fire occurs or the temperature of the liquid contained in the building member rises, it is required to maintain the shape of the building member.

Means for Solving the Problems

[0005] The building member used for radiant air conditioning according to the present invention is a building member used for radiant air conditioning that houses a liquid inside and utilizes heat exchange between the air in the living room and the liquid, and includes a main body portion made of a resin material and a film material provided on the surface of the main body portion on the living room side surface.

[0006] Furthermore, the present invention relates to a method for manufacturing a building component set used in a radiant air conditioning system, comprising a building component that contains a liquid inside and is made of at least a resin material, and piping through which a heat transfer medium flows, and is characterized by comprising: a first step of arranging the piping in contact with the building component; a second step of arranging a film material containing a resin material so as to cover the piping; and a third step of fixing the film material to the building component by welding. [Effects of the Invention]

[0007] According to the building component of the present invention, reliability can be improved. [Brief explanation of the drawing]

[0008] [Figure 1] This is a schematic diagram showing the configuration of an air conditioning system, which is an example of this embodiment. [Figure 2] This is a schematic plan view showing the arrangement of radiant panels constituting an air conditioning system, which is an example of this embodiment. [Figure 3] This is a perspective view of a radiant panel that constitutes an air conditioning system, which is an example of this embodiment. [Figure 4] This is a plan view from above of a radiant panel that constitutes an air conditioning system, which is an example of this embodiment. [Figure 5] This is a cross-sectional view along line AA in Figure 4. [Figure 6] Figure 4 is a cross-sectional view along line BB. [Figure 7] This figure illustrates a method for manufacturing a set of building components comprising radiant panels and piping that constitute an air conditioning system, which is an example of this embodiment. [Figure 8] This figure illustrates a method for manufacturing a set of building components comprising radiant panels and piping that constitute an air conditioning system, which is an example of this embodiment. [Figure 9] This figure illustrates a method for manufacturing a set of building components comprising radiant panels and piping that constitute an air conditioning system, which is an example of this embodiment. [Figure 10]This figure illustrates a method for manufacturing a set of building components comprising radiant panels and piping that constitute an air conditioning system, which is an example of this embodiment. [Modes for carrying out the invention]

[0009] Hereinafter, with reference to the drawings, an example of an embodiment of an air conditioning system equipped with building components according to the present invention will be described in detail. The embodiments described below are merely examples, and the present invention is not limited to these embodiments. Furthermore, forms obtained by selectively combining the multiple embodiments and modifications described below are included in the present invention.

[0010] Figure 1 is a schematic diagram showing the configuration of the air conditioning system 1 of this embodiment, and is a cross-sectional view of one floor of a building M in which the air conditioning system 1 is installed, viewed from the side. Figure 2 is a schematic diagram showing the arrangement of the radiant panels 10 as building components constituting the air conditioning system 1, and is a plan view of the radiant panels 10 viewed from above. In Figure 2, four radiant panels 10 are shown arranged. The building M is, for example, a large store or office building, and has one or more floors. The number of floors of the building M is not particularly limited.

[0011] As shown in Figure 1, the air conditioning system 1 is a radiant (radiant) air conditioning system having a radiant panel 10 as a building component that contains a liquid such as a latent heat storage material inside. In addition to the radiant panel 10, the air conditioning system 1 also includes piping 20 through which a heat transfer medium flows and a circulation device 30 for circulating the heat transfer medium. The radiant panel 10 is located on the ceiling of a living room 2 in building M.

[0012] As will be described in more detail later, the radiant panel 10 is made of a resin material and has a main body 100 with a hollow structure and a film material 200 provided on the lower surface of the main body 100. A liquid such as water or a latent heat storage material is contained inside the main body 100.

[0013] The air conditioning system 1, for example, has both cooling and heating functions and automatically executes either a cooling mode or a heating mode based on user operation or the temperature of the living room 2. In cooling mode, the air conditioning system 1 circulates a heat transfer medium (chilled water) through the piping 20 using a circulation device 30, for example, during nighttime hours when electricity demand is low. Then, heat exchange occurs between the heat transfer medium and the liquid inside the radiant panel 10 via the piping 20. As a result, the liquid inside the radiant panel 10 is cooled. During daytime hours when the temperature rises, the liquid inside the radiant panel 10 absorbs heat from the occupants W in the living room 2, equipment (not shown), and the walls and floor of the living room 2. This lowers the room temperature of the living room 2.

[0014] As shown in Figures 1 and 2, the radiant panel 10 is positioned between the ceiling boards 3 that form the ceiling surface of the living room 2. That is, the lower surface of the radiant panel 10 is exposed to the interior side from the ceiling boards 3 and forms part of the ceiling surface of the living room 2. By the lower surface of the radiant panel 10 forming the ceiling surface, heat exchange between the air in the living room 2 and the liquid inside the radiant panel 10 is facilitated. As described above, a film material 200 is provided on the lower surface of the radiant panel 10. In other words, the film material 200 forms the ceiling surface. The radiant panel 10 is inserted from the exterior side between the ceiling boards 3, for example, and is fixed to the ceiling boards 3 via bolts (not shown) or the like. The material of the ceiling boards 3 is not particularly limited and may be, for example, rock wool sound-absorbing board.

[0015] It is preferable that the radiant panel 10 is positioned so as not to come into contact with the underside of the upper structure 4 on the ceiling side of a predetermined floor of the building M, and also so as not to come into contact with the exterior walls or side walls of the building M. This makes it possible to easily adjust the temperature of the air in the living space 2 while reducing the amount of heat escaping from the underside of the upper structure 4 and the aforementioned walls through heat conduction from the radiant panel 10.

[0016] The radiation panel 10 preferably has a size adapted to the size of, for example, a ceiling board 3 used for a system ceiling (such as 600 mm × 600 mm), or a size that becomes the said size when a plurality of radiation panels 10 are combined. In this case, it becomes possible to replace the existing ceiling board 3 with the radiation panel 10, and the air conditioning system 1 can be easily introduced.

[0017] In the present embodiment, the radiation panel 10 has a substantially rectangular shape in plan view, and the length in the longitudinal direction of the radiation panel 10 coincides with the length of one side of the ceiling board 3. Also, the length in the short - hand direction of the radiation panel 10 is half of the length in the longitudinal direction of the radiation panel 10. That is, when two radiation panels 10 are arranged side - by - side in the short - hand direction of the radiation panel 1, it coincides with the size of the ceiling board 3.

[0018] Also, in the present embodiment, on the ceiling surface of the living room 2, the ratio (laying rate) of the total area of the radiation panels 10 to the area of the entire ceiling surface is 50%. Note that the laying rate can be appropriately changed according to the heat demand of the living room 2, and for example, it is 25% or more. Also, the laying rate can be 100%, that is, the radiation panels 10 may substantially form the entire area of the ceiling surface.

[0019] The radiation panel 10 is provided such that the lower surface of the radiation panel 10 and the lower surface of the ceiling board 3 are located on the same plane. Thereby, when looking up at the ceiling surface from inside the living room 2, the boundary between the radiation panel 10 and the ceiling board 3 becomes less conspicuous, and the design property is improved.

[0020] A heat medium circulated by a circulation device 30 flows through the pipe 20. The pipe 20 may be made of resin, but preferably is made of a metal having heat conductivity, such as copper or stainless steel. Further, from the viewpoint of suppressing deterioration of the metal, it is more preferable to use a three - layer pipe (for example, an aluminum three - layer pipe) in which a metal film is sandwiched between resins. In the present embodiment, the heat medium flowing through the pipe 20 is cold and warm water.

[0021] As shown in Figures 1 and 2, a portion of the piping 20 is held in place by the upper surface of the radiant panel 10. More specifically, a portion of the piping 20 is housed, or inserted into, grooves 101, 102, and 103 (see Figure 3) formed on the upper surface of the radiant panel 10 along its shorter direction, and held in place. The diameter of the piping 20 is approximately the same as the width of the grooves 101, 102, and 103 formed on the upper surface of the radiant panel 10.

[0022] In the example shown in Figure 2, piping 20 includes four pipes 21, 22, 23, and 24. The four pipes 21, 22, 23, and 24 are located on four radiating panels 11, 12, 13, and 14, respectively. Pipes 21 and 22 are connected by a pipe fitting 25, pipes 22 and 23 are connected by a pipe fitting 26, and pipes 23 and 24 are connected by a pipe fitting 27.

[0023] Furthermore, as shown in Figure 2, the four pipes 21, 22, 23, and 24 are arranged in a meandering manner on the upper surface of the radiant panel 10. By arranging the pipes 20 in a meandering manner on the upper surface of the radiant panel 10, the contact area between the pipes 20 and the upper surface of the radiant panel 10 can be increased. This allows for efficient heat exchange between the heat transfer medium and the radiant panel 10 via the pipes 20.

[0024] The four pipes 21, 22, 23, and 24 each have multiple straight regions and multiple curved regions. The straight regions are arranged along the longitudinal direction of the radiant panel 10. As will be described in more detail later, the grooves 101, 102, and 103 (see Figure 3) formed on the upper surface of the radiant panel 10 are formed at equal intervals in the short direction of the radiant panel 10. Therefore, the straight regions are arranged at equal intervals in the short direction of the radiant panel 10. The curved regions connect adjacent straight regions that are spaced apart from each other in the short direction of the radiant panel 10.

[0025] Furthermore, as shown in Figure 2, the four pipes 21, 22, 23, and 24 may be constructed by reversing or rotating four pipe members having substantially the same shape. In this case, the ease of installation when assembling the pipes 20 to the radiant panel 10 is improved.

[0026] The circulation device 30 is connected to the piping 20 and circulates the heat transfer medium flowing through the piping 20. The configuration of the circulation device 30 is not particularly limited as long as it can circulate chilled and hot water through the piping 20 and exchange heat with the chilled and hot water. The circulation device 30 is composed of, for example, a chiller, a cooling tower, etc. The location of the circulation device 30 is not particularly limited, but in this embodiment, the circulation device 30 is located on the roof of the building M. At least a part of the devices that make up the circulation device 30 may be installed indoors or underground.

[0027] The radiation panel 10 will be explained in detail with reference to Figures 3 to 6. Figure 3 is a perspective view of the radiation panel 10, Figure 4 is a plan view of the radiation panel 10 seen from above, and Figure 5 is a cross-sectional view taken along line AA in Figure 4. Figure 6 is a cross-sectional view taken along line BB in Figure 4.

[0028] As shown in Figures 3 to 6, the radiant panel 10 has a main body 100 with a hollow structure and a film material 200 provided on the lower surface of the main body 100. As described above, the film material 200 is exposed to the interior side from the ceiling board 3 (see Figure 1) and forms part of the ceiling surface of the living room 2 (see Figure 1).

[0029] The main body 100 is made of a resin material. In this case, the manufacturing cost of the main body 100 can be reduced. Examples of resins that make up the main body 100 include high-density polyethylene (HDPE), low-density polyethylene (LDPE), polypropylene (PP), and silicone rubber. When the main body 100 is made of a resin material, the main body 100 can be manufactured by blow molding. This method is effective when molding a shape having a hollow structure, as in this embodiment. The main body 100 can also be manufactured by injection molding.

[0030] The main body 100 has a continuous space inside which it contains a liquid such as water or a latent heat storage material. From the viewpoint of realizing a highly efficient air conditioning system 1, it is preferable that the liquid is a latent heat storage material.

[0031] The latent heat storage material housed in the main body 100 is a heat storage material capable of phase change between a solid phase and a liquid phase. The latent heat storage material releases stored latent heat by phase changing from the liquid phase to the solid phase, and stores heat as latent heat by phase changing from the solid phase to the liquid phase.

[0032] When the air conditioning system 1 is used for cooling, a latent heat storage material is used that undergoes a phase change in the range of 16°C to 22°C. Furthermore, it is preferable that the latent heat storage material is non-combustible. Examples of latent heat storage materials include sodium sulfate decahydrate (Na2SO4·10H2O), sodium acetate trihydrate (CH3COONa·3H2O), disodium hydrogen phosphate dodecahydrate (Na2HPO4·12H2O), sodium carbonate decahydrate (Na2CO3·10H2O), and sodium thiosulfate pentahydrate (Na2S2O3·5H2O), with sodium sulfate decahydrate being particularly preferred.

[0033] Furthermore, it is preferable that the ignition point of the resin material constituting the main body 100 is higher than the boiling point of the liquid. This suppresses the rise in temperature of the main body 100 even when the temperature of the liquid rises, thereby preventing damage and melting of the main body 100. In other words, if the ignition point of the resin material constituting the main body 100 is lower than the boiling point of the liquid, when the temperature of the liquid rises, the temperature of the main body 100 may exceed the ignition point of the resin material, potentially causing damage and melting of the main body 100. The ignition point of the resin material is preferably, for example, 100°C or higher, and preferably 110°C or higher.

[0034] As shown in Figures 3 to 5, the upper surface of the main body 100 is provided with three grooves 101, 102, and 103 extending along the longitudinal direction of the main body 100, four protrusions 111, 112, 113, and 114 separated by the grooves 101, 102, and 103, and a first region 121 and a second region 122 located at the longitudinal ends of the grooves 101, 102, and 103, respectively.

[0035] Here, the shape of the lower surface of the main body 100 is not particularly limited; it may be flat, or it may have grooves. Alternatively, it may have the same configuration as the upper surface of the main body 100. In this embodiment, the lower surface of the main body 100 has a flat shape, except for the areas where the second recess 150 and the third recess 160, which will be described later, are provided.

[0036] The grooves 101, 102, and 103 are provided parallel to each other along the longitudinal direction of the main body 100. As described above, the grooves 101, 102, and 103 have the function of housing and holding the piping 20 inside. In this embodiment, the lengths of the grooves 101, 102, and 103 are the same in the longitudinal direction of the main body 100. The lengths of the grooves 101, 102, and 103 are not particularly limited, but for example, they are 30% or more and 90% or less of the length of the main body 100.

[0037] Groove 101 is located in the center of the main body 100 in the short direction. Grooves 102 and 103 are located at equidistant positions from groove 101 in the short direction of the main body 100. By arranging grooves 101, 102, and 103 at equal intervals, the pipes 20 inserted into grooves 101, 102, and 103 can also be provided at equal intervals. As a result, the ease of installation when assembling the pipes 20 to the main body 100 is improved.

[0038] The widths of grooves 101, 102, and 103 are the same. The widths of grooves 101, 102, and 103 can be appropriately set according to the diameter of the pipe 20, for example, between 3% and 20% of the length of the main body 100 in the shorter direction. In this specification, unless otherwise specified, "width" refers to the width of the upper surface of the main body 100.

[0039] Here, it is preferable that the pipes 20 held in grooves 101, 102, and 103 are positioned in close contact with the main body 100. In this case, heat exchange between the liquid inside the main body 100 and the heat transfer medium flowing through the pipes 20 is efficiently performed. As will be described in more detail later, one method for holding the pipes 20 in close contact with the main body 100 is to place the pipes 20 in grooves 101, 102, and 103 of the main body 100, then place a film material containing resin material, and fix the film material to the main body 100 by welding. With this method, the resin material of the film material enters the gap formed around the pipes 20 when they are placed in grooves 101, 102, and 103. This makes it possible to hold the pipes 20 in close contact with the main body 100.

[0040] The protrusions 111, 112, 113, and 114 are provided parallel to each other along the longitudinal direction of the main body 100. Protrusion 111 is demarcated by grooves 101 and 102, and protrusion 112 is demarcated by grooves 101 and 103. Furthermore, protrusion 113 is positioned opposite protrusion 111 in the short direction of the main body 100 with groove 102 in between, and protrusion 114 is positioned opposite protrusion 112 in the short direction of the main body 100 with groove 103 in between. In other words, groove 101 separates protrusion 111 and protrusion 112, groove 102 separates protrusion 111 and protrusion 113, and groove 103 separates protrusion 112 and protrusion 114. As a result, the pipe 20 housed in groove 101 is held between protrusions 111 and 112, the pipe 20 housed in groove 102 is held between protrusions 111 and 113, and the pipe 20 housed in groove 103 is held between protrusions 112 and 114.

[0041] The upper surfaces of the protrusions 111, 112, 113, and 114 have a flat shape, except for the area where the first recess 140, described later, is formed. However, the shape of the upper surfaces of the protrusions 111, 112, 113, and 114 is not limited to this, and an air layer where convection does not occur may be provided directly above the main body 100.

[0042] The widths of the protrusions 111, 112, and 114 are substantially the same along the longitudinal direction of the main body 100. On the other hand, the width of the protrusion 113 differs along the longitudinal direction of the main body 100. Specifically, the width of the protrusion 113 at both ends of the main body 100 in the longitudinal direction is smaller than the width of the protrusion 113 at the center of the main body 100 in the longitudinal direction.

[0043] In this embodiment, the widths of the protrusions 111 and 112 are greater than the widths of the protrusions 113 and 114. Also, the widths of protrusion 111 and protrusion 112 are the same. The widths of the protrusions 111 and 112 are not particularly limited, but for example, they are 20% or more and 40 or less of the length of the main body 100 in the shorter direction, respectively.

[0044] In the protruding portion 113, an opening 115 is provided on the side surface of the longitudinal end of the main body portion 100, connecting the inside and outside of the main body portion 100. Latent heat storage material can be introduced into the main body portion 100 through the opening 115. The number of openings 115 is not limited to one, and multiple openings may be provided. The opening 115 is provided with, for example, a lid (not shown). The opening 115 may also be sealed with a film material. This film material may be designed to rupture, for example, when the liquid inside the main body portion 100 boils. This allows the internal pressure of the main body portion 100 to be released, and damage to the main body portion 100 can be suppressed.

[0045] In this embodiment, the main body 100 is provided with a first region 121 and a second region 122 at both longitudinal ends, through which the piping 20 is curved from groove 101 to groove 102 and from groove 102 to groove 103. In the first region 121 and the second region 122, the piping 20 is curved from groove 101 to groove 102 in one region and from groove 102 to groove 103 in the other. Therefore, the upper surfaces of the first region 121 and the second region 122 are at the same height as or lower than the bottom surfaces of grooves 101, 102, and 103. In this embodiment, The upper surfaces of the first region 121 and the second region 122 are configured to be at the same height as the bottom surfaces of the grooves 101, 102, and 103. Alternatively, the upper surface of the main body 100 may not have the first region 121 and the second region 122, but instead may have grooves that match the shape of the curved region of the pipe 20.

[0046] The main body portion 100 has overhangs 131 and 132 at both ends in the longitudinal direction of the main body portion 100, which extend outward from the outer edges of the first region 121 and the second region 122, that is, from the periphery of the lower surface of the main body portion 100. The lower surfaces of the overhangs 131 and 132 are designed to overlap and engage with the upper surface of the ceiling boards 3 and the battens (not shown) when the main body portion 100 is placed between the ceiling boards 3 (see Figure 1). This allows the main body portion 100 to be supported by the ceiling boards 3 and the battens, preventing the main body portion 100 from falling through the gaps in the ceiling boards 3. The shape and size of the overhangs 131 and 132 can be appropriately set according to the size and weight of the main body portion 100 and the shape of the ceiling boards 3. In this embodiment, the overhangs 131 and 132 are provided continuously along the short direction of the main body portion 100.

[0047] As shown in Figures 4 and 5, the depths of grooves 101, 102, and 103 are the same and are at least the radius, more preferably the diameter, of the pipe 20 so that the pipe 20 fits in and its movement is restricted. The depths of grooves 101, 102, and 103 are, for example, 30% to 70% of the maximum height of the main body 100. As described above, in this embodiment, the bottom surfaces of grooves 101, 102, and 103 and the top surfaces of the first region 121 and the second region 122 are at the same height.

[0048] As shown in Figures 4 and 5, grooves 101, 102, and 103 are U-shaped in cross-section. The walls of grooves 101, 102, and 103 constitute the side walls of protrusions 111, 112, 113, and 114. Therefore, the side walls of protrusions 111, 112, 113, and 114 have a curved shape. The shape of grooves 101, 102, and 103 is not particularly limited as long as it can hold the pipe 20. For example, grooves 101, 102, and 103 may have a shape with a uniform width in the depth direction.

[0049] As shown in Figures 4 and 5, the main body portion 100 is provided with an overhang portion 133 that extends outward from the outer edge of the protrusion 114, that is, from the periphery of the lower surface of the main body portion 100. Similar to the overhang portions 131 and 132, when the main body portion 100 is placed between the ceiling boards 3, the lower surface of the overhang portion 133 overlaps with the ceiling boards 3 and the battens, allowing for engagement. This supports the main body portion 100 on the ceiling boards 3 and prevents the main body portion 100 from falling through the gaps in the ceiling boards 3. In this embodiment, the protrusion portion 113 is not provided with an overhang portion, but it may be provided on the protrusion portion 113.

[0050] As shown in Figure 4, multiple first recesses 140 are provided on the upper surfaces of the protrusions 111 and 112, recessed into the interior of the main body 100. By providing the first recesses 140, the pressure resistance strength of the main body 100 is improved. As a result, deformation of the main body 100 can be suppressed even when the internal pressure changes due to the phase change of the latent heat storage material.

[0051] In this embodiment, four first recesses 140 are provided on the upper surfaces of the protrusions 111 and 112, at equal intervals along the longitudinal direction of the main body 100. That is, the first recesses 140 are provided so as to be recessed toward the interior side of the main body 100 in the area surrounded by the protrusions 111 and 112, i.e., the portion of the main body 100 that houses the latent heat storage material. The first recesses 140 have a circular shape in plan view. However, the first recesses 140 may also have a rectangular shape in plan view.

[0052] As shown in Figure 5, the wall surface of the first recess 140 is sloped such that its diameter gradually decreases towards the bottom of the groove. The bottom surface of the first recess 140 is positioned approximately parallel to the top surface of the main body 100. The depth of the first recess 140 is approximately 50% of the maximum height of the main body 100. In other words, the first recess 140 is formed up to approximately the midpoint in the thickness direction of the main body 100.

[0053] On the lower surface of the main body 100, a second recess 150 is provided, recessed inward from the main body 100, at a position that overlaps with the first recess 140 in a plan view of the main body 100. In other words, the same number of second recesses 150 are provided as the number of first recesses 140. Therefore, the second recesses 150 are provided in a location surrounded by the part of the main body 100 that houses the latent heat storage material, and are recessed inward from the main body 100, similar to the first recesses 140. The second recesses 150 have a circular shape in plan view, similar to the first recesses 140. Also, the wall surface of the second recesses 150 is inclined so that the diameter gradually decreases toward the bottom of the groove, similar to the first recesses 140. The number and size of the first recesses 140 and the second recesses 150 can be appropriately set according to the size and weight of the main body 100.

[0054] The second recess 150 is provided such that its bottom surface is in contact with the bottom surface of the first recess 140. The contact, or more specifically, the joining, of the bottom surfaces of the first recess 140 and the second recess 150 further improves the pressure resistance of the main body 100. As a result, even when the internal pressure changes due to the phase change of the latent heat storage material, the deformation of the main body 100 is further suppressed. In this embodiment, the first recess 140 is provided on the upper surface of the main body 100 and the second recess 150 is provided on the lower surface of the main body 100. However, the main body 100 may be configured to have only one of the first recess 140 or the second recess 150, with the upper and lower surfaces being joined together.

[0055] As shown in Figures 4 and 6, a third recess 160 is provided on the lower surface of the main body 100 at a different position from the second recess 150. Specifically, in a plan view of the main body 100, the second recess 150 and the third recess 160 are arranged in a staggered pattern. By arranging the second recess 150 and the third recess 160 in a staggered pattern, the pressure resistance strength of the main body 100 can be further improved.

[0056] The third recess 160 is recessed toward the interior side of the main body 100, and the bottom surface of the third recess 160 is provided to be in contact with the bottom surfaces of the grooves 101, 102, and 103 or the upper surfaces of the first region 121 and the second region 122. In other words, the third recess 160 is provided to be recessed toward the interior side of the main body 100 in the area surrounded by the bottom surfaces of the grooves 101, 102, and 103, and the first region 121 and the second region 122, that is, the part of the main body 100 that houses the latent heat storage material. As a result, the bottom surface is in contact with, more specifically, joined to the upper surface of the main body 100 opposite to the third recess 160. In this embodiment, the third recess 160 has the same shape as the second recess 150.

[0057] As shown in Figures 5 and 6, the film material 200 is provided on the lower surface of the main body 100 and forms part of the ceiling surface of the living room 2 (see Figure 1). By providing the film material 200, the durability of the radiant panel 10 can be improved. This improves the reliability of the radiant panel 10.

[0058] Furthermore, the design of the radiant panel 10 can be improved by providing the film material 200. For example, by matching the surface pattern of the film material 200 to the surface pattern of the ceiling board 3, the boundary between the radiant panel 10 and the ceiling board 3 becomes less noticeable. Note that the surface pattern of the film material 200 does not have to be the same as the surface pattern of the ceiling board 3. For example, the surface pattern of the film material 200 may be wood grain or tile pattern. Also, by changing the film material 200, the ceiling surface pattern of the radiant panel 10 can be changed, making it easy to change the design after the radiant panel 10 has been installed.

[0059] The film material 200 is a composite film having a multilayer structure consisting of, for example, a layer made of aluminum foil (first layer) and a layer for enhancing the design (second layer). The presence of the first layer containing aluminum foil in the film material 200 enhances the fire resistance of the radiant panel 10. As a result, it becomes easier to maintain the shape of the radiant panel 10 in the event of a fire, further improving its reliability.

[0060] Preferably, the film material 200 is provided over substantially the entire lower surface of the main body 100. In this case, the durability of the radiation panel 10 can be further improved. The thickness of the film material 200 is, for example, 5 μm or more and 100 μm or less, or 10 μm or more and 100 μm or less. If the film material 200 includes aluminum foil, the thickness of the aluminum foil is, for example, 2 μm or more and 50 μm or less.

[0061] Furthermore, it is preferable that the second layer of the film material 200 is made of a material with a higher emissivity than the aluminum foil (first layer). In this case, heat exchange between the air in the living room 2 (see Figure 1) and the liquid inside the radiant panel 10 becomes easier.

[0062] The film material 200 may be a so-called in-mold label, formed integrally with the main body 100. In this case, the film material 200 can be joined to the main body 100 without using an adhesive. Furthermore, because the main body 100 and the film material 200 are formed integrally, even if a volume change occurs in the liquid inside the main body 100, the film material 200 is less likely to peel off from the main body 100. When manufacturing the radiant panel 10 by blow molding, the radiant panel 10 in which the main body 100 and the film material 200 are integrally formed can be manufactured by inflating the resin material constituting the main body 100 with the film material 200 placed inside the mold.

[0063] The method of joining the film material 200 is not limited to this. For example, the film material 200 may have an adhesive layer containing an adhesive, and the film material may be joined by adhering this adhesive layer to the lower surface of the main body 100. The thickness of the adhesive layer is, for example, 5 μm or more and 30 μm or less. Furthermore, when the main body 100 is manufactured by injection molding, the thickness of the area of ​​the main body 100 to which the film material 200 is joined may be made smaller than the thickness of the other areas by, for example, the thickness of the film material 200. This reduces the amount of resin material that makes up the main body 100, thereby reducing manufacturing costs.

[0064] Next, a method for manufacturing a building component set comprising a radiant panel 10 and piping 20 will be described with reference to Figures 7 to 10. Figure 7 shows the state before the piping 20 is placed on the radiant panel 10, and Figure 8 shows the state after the piping 20 is placed on the radiant panel 10. Figure 9 shows the state before the upper film material 300 is placed, and Figure 10 shows the state after the upper film material 300 is placed. After manufacturing, this building component set is placed in the space above the ceiling of a living room 2 in building M.

[0065] The method for manufacturing the building component set of this embodiment includes a first step of arranging the pipe 20 in contact with the radiant panel 10 as a building component, a second step of arranging an upper film material 300 containing a resin material so as to cover the pipe 20, and a third step of fixing the upper film material 300 to the radiant panel 10 by welding.

[0066] As shown in Figures 7 and 8, in the first step, the pipe 20 is inserted into grooves 101, 102, and 103 formed in the main body 100 of the radiating panel 10. From the viewpoint of easily inserting the pipe 20 into grooves 101, 102, and 103, the width of grooves 101, 102, and 103 is larger than the diameter of the pipe 20. Therefore, when the pipe 20 is inserted into grooves 101, 102, and 103, a gap is formed around the pipe 20.

[0067] If a gap forms around the pipe 20, the contact area between the pipe 20 and the main body 100 decreases, making it difficult for heat exchange to occur between the heat transfer medium inside the pipe 20 and the liquid (latent heat storage material) inside the main body 100. As a result, the efficiency of the air conditioning system 1 deteriorates.

[0068] Therefore, as shown in Figures 9 and 10, after inserting the pipes 20 into grooves 101, 102, and 103, in the second step, the upper film material 300 containing the resin material is placed over the pipes 20 from above. From the viewpoint of improving the adhesion described later, it is preferable that the resin material constituting the upper film material 300 is the same as the resin material constituting the main body 100.

[0069] In the third step, the resin material constituting the upper film material 300 is melted by welding, such as ultrasonic welding or electromagnetic induction heating welding. As a result, the molten resin material fills the gap around the pipe 20, improving the adhesion between the pipe 20 and the main body 100 and increasing the contact area. Consequently, heat exchange between the heat transfer medium inside the pipe 20 and the liquid (latent heat storage material) inside the radiant panel 10 becomes easier. When heat exchange between the heat transfer medium inside the pipe 20 and the liquid inside the radiant panel 10 becomes easier, for example, the temperature of the liquid inside the radiant panel 10 is less likely to rise excessively, and deformation or damage to the radiant panel 10 due to the temperature rise of the liquid inside the radiant panel 10 is suppressed. As a result, the reliability of the radiant panel 10 can be improved. [Explanation of Symbols]

[0070] 1. Air conditioning system, 2. Living room, 3. Ceiling board, 4. Upper structure, 10, 11, 12, 13, 14. Radiant panel, 20, 21, 22, 23, 24. Piping, 25, 26, 27. Piping fittings, 30. Circulation device, 100. Main body, 100, 101, 102, 103. Grooves, 111, 112, 113, 114. Protrusions, 115. Opening, 121. First area, 122. Second area, 131, 132, 133. Overhanging parts, 140. First recess, 150. Second recess, 160. Third recess, 200. Film material, 300. Upper film material (film material).

Claims

1. A building component used in radiant air conditioning, which contains a liquid inside and utilizes the exchange of heat between the air in the living space and the liquid, The main body is made of resin material, A film material provided on the surface of the main body that faces the living room, A building component that includes the following features.

2. The aforementioned film material constitutes the ceiling surface of the living room, as described in claim 1.

3. The building component according to claim 1, wherein the film material includes aluminum foil.

4. The building component according to claim 1, wherein the film material is a composite film having a multilayer structure.

5. The building member according to claim 1, wherein the liquid is water or a latent heat storage material.

6. The building component according to claim 5, wherein the latent heat storage material is sodium sulfate decahydrate.

7. The building member according to claim 1, wherein one surface of the building member is provided with a recess that is indented toward the interior side of the building member, and the one surface and the other surface facing the one surface are in contact with each other.

8. The building member according to claim 1, wherein the main body is provided with a groove for accommodating piping through which a heat transfer medium flows.

9. It contains liquid inside and is a building component containing resin material, A pipe through which a heat transfer fluid flows, A method for manufacturing a set of building components used in radiant air conditioning, comprising: The first step is to arrange the piping in a state in contact with the building member, A second step involves arranging a film material containing a resin material so as to cover the aforementioned pipe, A third step involves fixing the film material to the building component by welding, A method for manufacturing a set of building components, comprising the following:

10. The method for manufacturing a building component set according to claim 9, wherein in the third step, the film material is fixed to the building component by ultrasonic welding or electromagnetic induction heating welding.

11. The building member has a groove for piping, The method for manufacturing a building component set according to claim 9, wherein in the first step, the piping is arranged in the groove.

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