Curved GW-made line box

Abstract

To provide a curved GW-made line box capable of uniformizing a longitudinal air volume in an indoor opening, without the need for a surplus member and a space.SOLUTION: In a curved GW-made line box according to the present invention, a discharge part 50 is formed in a cylindrical shape having a longitudinal direction. A depth plate part and a front plate part are constituted in a curved shape or an arc shape, in which the same direction is directed inward. In a plan view, a line box body 10 is constituted in a shape approximately similar to the discharge part 50. An opening 20 for taking in air-conditioned air from an air conditioner is formed in a front wall part that is arranged on the arc-shaped inside of the depth plate part.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to a line box connected to a duct that delivers conditioned air. [Background technology]

[0002] Conventionally, a system has been adopted in which a duct extends from an air conditioner placed in the ceiling of a building, and conditioned air is supplied from a box (line box) connected to the duct to a room through an opening (hereinafter referred to as an "indoor opening") formed in each air-conditioned area such as a living room. The opening surface of the indoor opening is rectangular, and the outlet of the line box connected to the indoor opening is also a rectangular parallelepiped that matches the shape of the opening surface of the indoor opening (for example, Patent Document 1). [Prior art documents] [Patent documents]

[0003] [Patent Document 1] JP 2003-56895 A Summary of the Invention [Problem to be solved by the invention]

[0004] In recent years, as shown in FIG. 49, rectangular openings with curved long sides (hereinafter referred to as "curved openings") have begun to be adopted, mainly from the viewpoint of design. Generally, a line box includes a main body 110 and an exhaust outlet 150, as shown in FIGS. 49 and 51. As shown in FIGS. 49 and 51, the exhaust outlet 150 is typically formed as a cylindrical box with curved long sides so that its opening matches the curved opening 200. In contrast, the main body 110 is formed in a normal rectangular parallelepiped shape, and a connection surface portion 112 (see FIGS. 51 and 52) is arranged at the connection portion with the exhaust outlet 150, and opens to match the curved shape of the exhaust outlet 150. For example, as shown in FIG. 49, a line box 100 is arranged above the ceiling so that conditioned air is exhausted from a curved opening 200 formed in Room C, which is the ceiling. When conditioned air Air1 is supplied to the supply port 120 of the line box 100, the conditioned air Air1 changes direction as it hits the inner surface of the line box 100, and becomes exhaust air Air31 to Air33, which is supplied to Room M, which is the room.

[0005] Within the main body 110, air 1 changes direction toward the exhaust port 150 (see FIG. 49 ). At the same time, as shown in FIG. 50 , air 1 tends to flow toward both ends of the main body 110 in the longitudinal direction, where the air pressure is lower. For this reason, as shown in FIG. 49 , the volume of exhaust air varies depending on the position in the longitudinal direction of the curved opening 200. Typically, the volume of air 31 near both ends is the largest, followed by air 33 in the central portion, and the volume of air 32 in the intermediate portion is the smallest. In this way, the volume of exhaust air becomes non-uniform depending on the position in the longitudinal direction of the curved opening 200. In this regard, in the past, emphasis was placed on the total volume of exhaust air from the curved opening 200, and it was considered that there was no problem as long as the total volume was a predetermined value.

[0006] However, the inventors of the present invention have found that unevenness in the volume of exhaust air depending on the position in the longitudinal direction of curved opening 200 is problematic, from the viewpoint that if the volume of exhausted air varies depending on the position inside a room, for example, the airflow, temperature, and humidity will vary depending on the position inside a room, thereby affecting the comfort of people staying in the room. Also, as shown in FIG. 52 , connection surface 112 is composed of frame 112a and opening 112s, but compared to when the indoor opening is rectangular, curved opening 200 has the problem that such connection surface 112 is required as an extra member to connect main body 110 and exhaust section 150. Furthermore, as can be seen from FIGS. 51 and 52 , the area of ​​main body 110 is larger than that of exhaust section 150 in a plan view, which causes the problem of unnecessarily occupying space behind the ceiling where curved opening 200 is located.

[0007] Based on the above, the present invention provides a curved GW line box that does not require extra components or space and can uniformly distribute airflow in the longitudinal direction at an indoor opening. [Means for solving the problem]

[0008] The first invention is a curved GW line box having a hollow box-shaped line box body and an exhaust section connected to the line box body and exhausting conditioned air sent from the line box body, wherein the exhaust section has a longitudinal direction and is formed in a cylindrical shape with an opening in a direction perpendicular to the longitudinal direction, and has a rear plate section and a front plate section that constitute the longitudinal direction and are arranged parallel to each other, the rear plate section and the front plate section are formed in a curved or arc shape, the line box body is configured to have a shape approximately similar to the exhaust section in a plan view, This is a curved GW line box, which has an opening at the portion that connects to the discharge section and is configured so that the discharge section can be inserted, and which has a ceiling wall, and a rear wall and a front wall that are arranged parallel to each other, the rear wall and the front wall being formed in a curved or arc shape, and the front wall being arranged inside the curved or arc shape relative to the rear wall, and an opening formed in the front wall for taking conditioned air from an air conditioner into the inside of the line box body, and a cylindrical supply port being arranged in the opening.

[0009] According to the first aspect of the present invention, the rear wall and front wall of the line box body are configured in a curved or arc-shaped configuration, with the front wall positioned inside the rear wall. The front wall has an opening for introducing conditioned air from an air conditioner into the line box body, and a supply port is located in the opening. Therefore, conditioned air flowing into the line box body from the supply port flows toward the rear wall and changes direction upon hitting the rear wall. Here, the front wall is positioned inside the curved or arc-shaped rear wall, and conditioned air flows from the supply port in the front wall toward the rear wall. Therefore, the air flow reflected by the rear wall has a vector component toward the center in the longitudinal direction of the line box body. This reduces the tendency for conditioned air to flow toward both longitudinal ends where the air pressure is relatively low, thereby uniforming the volume of conditioned air discharged at each longitudinal position of the discharge section. Although the processing process for the line box body is more complicated than when the rear and front walls are curved or arc-shaped, the inventors of the present invention discovered the problem of uniforming the volume of conditioned air discharged from the line box body in the longitudinal direction and considered it important to solve this problem. Furthermore, because the line box body has a shape that is approximately similar to the discharge section in a plan view, fixing the line box body to the discharge section is sufficient by simply fitting the discharge section into the line box body, and no connecting member is required between the line box body and the discharge section. Furthermore, because the line box body and the discharge section have a shape that is approximately similar in a plan view, there is no problem of unnecessary occupation of space behind the ceiling where the indoor opening is located.

[0010] The second invention is a curved GW line box in the configuration of the first invention, wherein the curved GW line box is formed from metal and has a frame that covers the line box body, the line box body is formed from an elastic material, and the frame allows the line box body to be elastically deformed and maintained in a curved or arc-shaped state.

[0011] According to the second aspect of the present invention, the material constituting the line box body has elasticity that causes it to return to its original shape before being curved or arced. However, this elasticity is limited by the frame. In this way, the elasticity of the line box body and the frame can maintain the curved or arced shape.

[0012] The third invention is a curved GW line box having the configuration of the first invention, wherein the curved GW line box is formed from a metal material and has a frame portion that covers the line box body, and the line box body is formed from a material that has the property of elastically deforming in a relatively short period of time and plastically deforming after a relatively long period of time has passed, and the line box body maintains its curved or arc-shaped state due to elastic deformation by the frame portion during the short period of time, and after the long period of time has passed, it maintains its curved or arc-shaped state due to elastic deformation without relying on the frame portion.

[0013] According to the third aspect of the present invention, in the manufacturing process of the curved GW line box, the line box body is reliably fixed in its final shape by the frame, and after a predetermined long time has passed, the line box body is maintained in its final shape without relying on the frame.

[0014] The fourth invention is a curved GW line box having the configuration of the first invention, wherein the curved GW line box is formed from metal and has a frame that covers the line box body, the line box body is formed from a microduct board, the frame allows the line box body to be elastically deformed and maintained in a curved or arc-shaped state, and the microduct board is a plate-shaped material made of glass fiber solidified with a thermosetting resin and finished on the outer part with aluminum foil reinforced with glass thread.

[0015] Microduct boards are weak against external forces, especially since they are covered with aluminum foil, so they are not intended to be bent when used. However, the inventors of the present invention noticed that microduct boards can bend elastically without losing their properties if they are bent to a certain extent. Furthermore, they noticed that the deformed state is fixed after a certain period of time has passed. Utilizing this property, the inventors came up with the idea that during the manufacturing process, the line box body is reliably formed into its final shape by the frame, and after a certain period of time, it can maintain its final shape without relying on the frame.

[0016] The fifth invention is a curved GW line box configured as in the second invention, wherein the rear plate and front plate of the discharge section have a plurality of rectangular portions arranged on them that protrude outside the discharge section in a direction substantially perpendicular to the height direction, and a portion of the discharge section in the height direction is inserted into the interior of the line box body in a manner that contacts the rear wall and front wall of the line box body, and the rectangular portions contact the sides of the rear wall and front wall, thereby determining the positional relationship between the discharge section and the line box body, and the rectangular portions are sandwiched between the sides of the rear wall and front wall and the frame, thereby maintaining a fixed state between the discharge section and the line box body.

[0017] According to the configuration of the fifth aspect of the invention, the rectangular portion determines the positioning of the discharge portion and the line box body, and also fixes the discharge portion and the line box body together.

[0018] The sixth invention is a curved GW line box in the configuration of the first invention, wherein the ceiling wall portion is formed having an outer peripheral portion and a central portion, the central portion is located inside the outer peripheral portion, is formed in a shape substantially similar to the outer peripheral portion, and is formed to be higher with a step from the outer peripheral portion, and the rear wall portion and the front wall portion are configured to be positioned by the main surface of the outer peripheral portion and the side surface of the central portion.

[0019] According to the sixth aspect of the present invention, the rear wall and the front wall can be positioned by the configuration of the ceiling wall itself, so no additional members are required for positioning, which also contributes to reducing the weight of the line box body.

[0020] The seventh invention is a curved GW line box in which, in the configuration of the first invention, the line box body has a side wall portion arranged between the rear wall portion and the front wall portion, and the rear wall portion and the portions near both ends of the front wall portion are formed lower with a step compared to other portions of the rear wall portion and the front wall portion, and the side wall portion is configured to be positioned by the main surface of the outer periphery of the ceiling wall portion, the side surface of the central portion, and the portions near both ends of the rear wall portion and the front wall portion.

[0021] According to the seventh aspect of the present invention, the side walls can be positioned by the configuration of the ceiling wall, the rear wall, and the front wall themselves, so no additional members are required for positioning, which also contributes to reducing the weight of the line box body.

[0022] An eighth invention is, in the configuration of the second invention, the frame portion includes a rear frame member formed in a curved or arcuate shape substantially identical to an end portion along the longitudinal direction of the rear wall portion, and a front frame member having a curved or arcuate shape substantially identical to an end portion along the longitudinal direction of the front wall portion, the rear frame member and the front frame member being formed by processing a plate-like member, the rear frame member being composed of a first member and a second member, the first member being formed by processing the plate-like member into a curved or arcuate shape substantially identical to an end portion along the longitudinal direction of the rear wall portion before assembly of the frame portion, and forming a main surface of the rear frame member, the second member being formed by processing the plate-like member into a rectangular shape overall in a plan view before assembly of the frame portion, and having a main portion having a longitudinal direction and a plurality of rectangular portions connected to the main portion, the main portion of the second member being formed by processing the plate-like member into a rectangular shape overall in a plan view before assembly of the frame portion, a curved GW line box in which the rectangular portion and the first member are fixed by welding, the front frame member is made up of a third member and a fourth member, the third member is formed into a curved or arcuate shape substantially identical to the end portion along the longitudinal direction of the front wall portion before the frame portion is assembled, and the plate-like member of the third member is formed into a rectangular shape overall in a plan view before the frame portion is assembled, and is formed to have a main portion having a longitudinal direction and a plurality of rectangular portions connected to the main portion, the main portion of the fourth member is curved to match the shape of the third member during the frame portion assembly process, and forms an orthogonal plane perpendicular to the main plane, and the rectangular portion and the third member are fixed by welding.

[0023] According to the eighth aspect of the present invention, the first member of the rear frame member is formed in a curved or arcuate shape substantially identical to the longitudinal end of the rear wall portion, forming a main surface, and the second member is curved to match the first member and forms an orthogonal surface. Therefore, the rear frame member can maintain a curved or arcuate shape substantially identical to the longitudinal end of the rear wall portion, and does not deform when the curved GW line box is in use. Similarly, the third member of the front frame member is formed in a curved or arcuate shape substantially identical to the longitudinal end of the front wall portion, forming a main surface, and the fourth member is curved to match the third member and forms an orthogonal surface. Therefore, the front frame member can maintain a curved or arcuate shape substantially identical to the longitudinal end of the front wall portion, and does not deform when the curved GW line box is in use. By configuring the rear frame member and the front frame member as described above, the shape of the line box body can be maintained. [Effects of the Invention]

[0024] The curved GW line box according to the present invention does not require any extra components or space, and can make the air volume uniform in the longitudinal direction at the indoor opening. [Brief explanation of the drawings]

[0025] [Figure 1] FIG. 1 is a schematic perspective view of a curved GW line box according to an embodiment of the present invention. [Figure 2] This is a schematic perspective view of the ceiling wall and other parts that make up the curved GW line box. [Figure 3] FIG. 1 is a conceptual diagram of a cross section of a microduct board. [Figure 4] This is a schematic oblique view of the front wall and supply port that make up the curved GW line box. [Figure 5] This is a schematic oblique view of the rear wall portion that constitutes the curved GW line box. [Figure 6] This is a schematic diagram of the side wall portion that constitutes the curved GW line box. [Figure 7]This is a schematic diagram of the rear frame part that makes up the curved GW line box. [Figure 8] This is a schematic diagram of the front frame part that makes up the curved GW line box. [Figure 9] This is a schematic diagram of the side frame portion that makes up the curved GW line box. [Figure 10] This is a schematic diagram of the hanging members that make up the curved GW line box. [Figure 11] FIG. 10 is a schematic view of a rear plate that constitutes the discharge section. [Figure 12] FIG. 4 is a schematic view of a front plate that constitutes the discharge section. [Figure 13] FIG. 4 is a schematic view of a side plate that constitutes the discharge section. [Figure 14] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 15] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 16] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 17] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 18] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 19] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 20] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 21] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 22] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 23] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 24] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 25] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 26]This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 27] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 28] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 29] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 30] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 31] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 32] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 33] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 34] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 35] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 36] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 37] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 38] This is a schematic diagram showing the manufacturing method of a curved GW line box. [Figure 39] This is a schematic cross-sectional view of a curved GW line box in a direction perpendicular to the longitudinal direction. [Figure 40] This is a schematic cross-sectional view of a curved GW line box in a direction perpendicular to the longitudinal direction. [Figure 41] This is a schematic cross-sectional view of a curved GW line box in a direction perpendicular to the longitudinal direction. [Figure 42] This is a schematic cross-sectional view of a curved GW line box in a direction perpendicular to the longitudinal direction. [Figure 43] This is a schematic explanatory diagram showing the effect of the curved GW line box. [Figure 44]This is a schematic explanatory diagram showing the effect of the curved GW line box. [Figure 45] FIG. 10 is a schematic diagram showing a curved GW line box and the like according to the second embodiment. [Figure 46] FIG. 10 is a schematic perspective view showing a ceiling wall portion of a second embodiment. [Figure 47] FIG. 1 is a schematic diagram showing a first reference example. [Figure 48] FIG. 10 is a schematic diagram showing a second reference example. [Figure 49] FIG. 1 is a schematic explanatory diagram showing a conventional line box. [Figure 50] 10A and 10B are schematic explanatory diagrams showing the effects of a conventional line box. [Figure 51] FIG. 1 is a schematic diagram showing components constituting a conventional line box. [Figure 52] 1 is a schematic diagram showing a member for connecting to an indoor opening in a conventional line box. DETAILED DESCRIPTION OF THE INVENTION

[0026] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Preferred embodiments of the present invention will now be described with reference to the accompanying drawings. Note that the description will be limited to the basic configuration of the present invention, and will omit explanations of configurations that can be implemented by those skilled in the art.

[0027] First Embodiment <Outline of the curved GW line box> An outline of the configuration of a curved GW line box 1 (hereinafter referred to as "line box 1") will be described with reference to Fig. 1. Fig. 1 is a schematic perspective view showing the line box 1.

[0028] As shown in FIG. 1, the line box 1 has a line box main body 10 (hereinafter referred to as "main body 10") and an exhaust section 50 connected to the main body 10. The main body 10 is formed in the shape of a hollow box that is long in one direction. The exhaust section 50 is formed as a cylindrical member having a longitudinal direction, and exhausts the conditioned air sent from the main body 10.

[0029] The discharge unit 50 appears to have a substantially rectangular shape in a plan view from the direction of arrow Z1. The two long sides of the substantially rectangular shape of the discharge unit 50 are arranged parallel to each other, and the discharge unit 50 is configured to have a curved or arc-like shape with the same direction facing inward. Hereinafter, the curved or arc-like shape will be collectively referred to as an "arc shape."

[0030] A heat insulating sheet 80 is disposed on the outer peripheral surface of the discharge portion 50 in a manner that contacts the main body 10. The sheet 80 is a sheet made of foamed plastic, for example, an adhesive heat insulating tape made of foamed plastic. The adhesive heat insulating tape is, for example, 75 millimeters (mm) wide and 3 millimeters (mm) thick.

[0031] The main body 10 is a substantially rectangular parallelepiped member, and is configured to have a shape substantially similar to that of the exhaust section 50 in a plan view. The portion of the main body 10 that connects to the exhaust section 50 is open, allowing gas to pass through. The main body 10 is provided with a supply port 20 for taking conditioned air A1 (hereinafter referred to as "air A1") from an air conditioner into the main body 10. In this specification, when describing each figure, unless a specific direction is specified, a view viewed from the direction of the arrow indicating air A1 is referred to as a front view, and a view viewed from the direction of arrow Z1 is referred to as a plan view. In addition, when describing each figure, unless a specific direction is specified, the direction indicated by arrow Z is referred to as the up-down direction.

[0032] The main body 10 is formed of an elastic material. Specifically, the main body 10 is formed of a material that is elastic for a short period of time, but after a predetermined long period of time, the deformed shape is fixed and the material undergoes plastic deformation. The duration of the terms "short period" and "long period" varies depending on the specific dimensions and shape of the component. However, the inventors of the present invention have discovered that the microduct board used in this embodiment has a predetermined "short period" for elastic deformation and a "long period" for plastic deformation. In this embodiment, the short period is generally less than 72 hours, and the long period is generally 72 hours or more. Each side of the main body 10 is covered by a metal frame 30 and side frame 40. The frame 30 and side frame 40 are examples of frames.

[0033] Air A1 that enters the interior of main body 10 through supply port 20 changes direction within main body 10 and is discharged as exhaust air A2. Air A1 is air whose temperature and humidity have been adjusted by an air conditioner, for example. Due to the structure of main body 10 in this embodiment, there is no significant difference in the volume of exhaust air A2 at any position along the length of main body 10.

[0034] <Components Constituting the Main Body 10> The components that make up the main body 10 will be described below with reference to FIGS. FIG. 2(a) is a schematic diagram showing the ceiling wall portion 12. The ceiling wall portion 12 is formed into an arc shape (curved shape) as a whole. Note that the shape of the ceiling wall portion 12 is not necessarily limited to an arc shape in the strict sense as long as it is formed into an arc shape (curved shape) as a whole. The shape of the ceiling wall portion 12 in a plan view may be called an arc shape, a curved shape, or a concave shape in addition to an arc shape. In this embodiment, the ceiling wall portion 12 is described as having an arc shape with a predetermined radius of curvature. The above description of the arc shape also applies to other components of the line box 1.

[0035] The ceiling wall 12 is composed of an outer peripheral portion 12a and a central portion 12b formed inside the outer peripheral portion 12a. The outer peripheral portion 12a and the central portion 12b are similar in shape in a plan view. Specifically, the outer peripheral shape of the main surface 12ba of the central portion 12b is similar in shape to the main surface 12aa of the outer peripheral portion 12a. The central portion 12b is formed to have a step in the width direction (the direction of width w1 in FIG. 2(b)) relative to the outer peripheral portion 12a, making it higher. As will be described later, the main surface 12aa of the outer peripheral portion 12a and the side surface 12bb of the central portion 12b can be used to position and fix other members constituting the main body 10. Through holes 12s are formed near both ends of the central portion 12b. Bolts 46 of the hanging member 41, which will be described later, pass through the through holes 12s.

[0036] The ceiling wall portion 12 is manufactured by processing the micro duct board 17 shown in FIG. 3 into the intermediate member 12pre shown in FIG. 2(b), and then cutting the intermediate member 12pre. That is, the outer periphery of the intermediate member 12pre is cut to a position that is 50% of the thickness w1 to form the outer periphery 12a and the central portion 12b. Before the outer periphery 12a and the central portion 12b are formed, the intermediate member 12pre has a substantially rectangular plate-like shape. However, the two long sides in plan view are formed in an arc shape. The two short sides in plan view are formed in a straight line.

[0037] As shown in FIG. 2(a), in the outer peripheral portion 12a, the long side at the top of the page is designated as long side 12a1, and the long side at the bottom of the page is designated as long side 12a2. The radius of curvature of long side 12a1 is designated as r1a, and the radius of curvature of long side 12a2 is designated as r2a. In the central portion 12b, the long side at the top of the page is designated as long side 12b1, and the long side at the bottom of the page is designated as long side 12b2. The radius of curvature of long side 12b1 is designated as r1b, and the radius of curvature of long side 12b2 is designated as r2b. The arc length of long side 12b1 is designated as L12b1, and the arc length of long side 12b2 is designated as L12b2. The length L12b1 is longer than the length L12b2. The length L12b1 of long side 12b1 is, for example, approximately 1500 mm. The length L12b2 of long side 12b2 is, for example, approximately 1490 mm. For example, the radius of curvature r1a of long side 12a1 is 10,000 millimeters (mm), the radius of curvature r1b of long side 12b1 is 9,975 millimeters (mm), the radius of curvature r2b of long side 12b2 is 9,875 millimeters (mm), and the radius of curvature r2a of long side 12a2 is 9,850 millimeters (mm). The difference between the radius of curvature r1a of long side 12a1 and the radius of curvature r1b of long side 12b1, and the difference between the radius of curvature r2b of long side 12b2 and the radius of curvature r2a of long side 12a2 are substantially the same as the thickness of the microduct board, which will be described later.

[0038] Microduct boards are also called glass boards. Microduct boards are plate-shaped materials made by solidifying glass fibers with thermosetting resin and finishing the outer layer with aluminum foil reinforced with glass yarn. Figure 3 is a schematic cross-sectional view of microduct board 17. Microduct board 17 has a black nonwoven fabric layer 17a, an adhesive layer 17b, a glass wool layer 17c, an adhesive layer 17d, and a surface layer 17e. Glass wool layer 17c is formed by solidifying glass fibers with thermosetting resin. Surface layer 17e is aluminum foil reinforced with glass yarn. Adhesive layer 17b secures nonwoven fabric layer 17a and glass wool layer 17c, and adhesive layer 17d secures glass wool layer 17c and surface layer 17e.

[0039] Microduct boards have excellent heat insulation and soundproofing properties, allowing them to transport air quietly without significantly changing the air temperature. Microduct boards are also lightweight, much lighter than the steel plates typically used in ducts. The microduct board of this embodiment weighs approximately 64 kilograms per cubic meter (kg / m3). If the components formed from the microduct board in this embodiment were made of metal steel plate, the weight would be approximately 35% heavier. The thickness (w1) of the microduct board is 25 millimeters (mm). In this embodiment, for example, the MDB24 microduct board from Mag Isover Co., Ltd. is used.

[0040] Microduct boards are vulnerable to external forces, particularly the aluminum foil and nonwoven fabric on their surfaces, which can be damaged by deformation. Therefore, bending microduct boards has not been considered in the past. However, the inventors of the present invention discovered that microduct boards exhibit elasticity without damaging the microboard or impairing its original properties, provided the microduct board is bent within a certain range. Furthermore, the bent state can be fixed if the microduct board is maintained in a bent state for a certain period of time. The length of time it takes for the bent microduct board to become fixed after bending varies depending on the specific dimensions of the product. The front wall 14 and rear wall 16 used in this embodiment are approximately 1500 mm long, approximately 300 mm wide, and have a radius of curvature of approximately 1000 mm. In this case, if the microduct board is maintained in a deformed state due to an external force for approximately 72 hours, the deformed shape is maintained even after the external force is removed. The above dimensions are approximate; in reality, the front wall 14 is slightly shorter than the rear wall 16, and its radius of curvature is also slightly smaller. The main body 10 utilizes the elastic and plastic deformation properties of the microduct board to process and maintain its final shape. That is, assembly of the main body 10 is completed within the time it exhibits elasticity. This shortens the assembly process time. Furthermore, the microduct board undergoes plastic deformation after a predetermined time has elapsed, and does not apply force to other components, eliminating the problem of deforming other components. Unlike this embodiment, the assembly process may begin once the microduct board has deformed and undergoes plastic deformation after a predetermined time has elapsed. The microduct board is an example of an elastic material. It is also an example of a material that exhibits elastic deformation over a relatively short period of time and plastic deformation over a relatively long period of time. In this specification, elasticity refers to the property of straining when stress is applied, but returning to its original dimensions when stress is removed. Plastic deformation refers to deformation that occurs when an external force is applied to an object and remains even after the external force is removed.In this embodiment, plastic deformation is not limited to that which occurs when the magnitude of the external force exceeds the elastic limit, but also includes a state in which, like a microduct board, the material undergoes elastic deformation for a short period of time, but if the elastic deformation is maintained for a long period of time, the elastically deformed shape is maintained even when the external force is removed.

[0041] FIG. 4(a) is a schematic perspective view showing the front wall portion 14. Before the main body 10 is assembled, the front wall portion 14 is generally in the form of a flat plate and a rectangular parallelepiped with a longitudinal direction. The front wall portion 14 is formed of a microduct board. Both longitudinal ends of the front wall portion 14 are formed lower and have a step compared to the other portions. That is, the front wall portion 14 is composed of a central portion 14a and peripheral portions 14b and 14c which are formed lower and have a step compared to the central portion 14a. The central portion 14a is formed higher and has a step in the width direction (direction of width w1) compared to the peripheral portions 14b and 14c.

[0042] The main surface of the central portion 14a, which faces the outer peripheral portions 14b and 14c, is the inner surface 14ab, which will become the inner surface when the main body 10 is constructed. The main surface opposite the inner surface 14ab is the outer surface 14aa, which will become the outer surface when the main body 10 is constructed. The front wall portion 14 has an opening 14s at its center in a front view for taking in conditioned air from an air conditioner. During the assembly process of the main body 10, the front wall portion 14 is curved so that its inner surface 14ab matches the shape of the long side 12b2 of the central portion 12b of the top wall portion 12. In FIG. 4, the front wall portion 14 is curved so that the longitudinal center is raised toward the front side of the page. The final shape of the inner surface 14ab of the front wall portion 14 is an arc shape with a curvature radius r2b (see FIG. 2(a)) that matches the long side 12b2 of the central portion 12b of the top wall portion 12.

[0043] The supply port 20 shown in FIG. 4(b) is disposed in the opening 14s. The supply port 20 is a generally cylindrical member, and is composed of a cylindrical main body 20a and an expanded diameter portion 20b. The supply port 20 is formed by processing a metal plate. The metal plate is, for example, a zinc-plated steel plate (Z18) having a thickness of 0.6 to 2.3 millimeters (mm). In this embodiment, the thickness of the metal plate is 0.6 millimeters (mm). The supply port 20 is inserted from the inner surface 14ab side of the front wall portion 14 and protrudes toward the outer surface 14aa side. At this time, the expanded diameter portion 20b abuts the inner surface 14ab, and the supply port 20 is positioned relative to the front wall portion 14.

[0044] FIG. 5 is a schematic diagram showing the rear wall portion 16. Before the main body 10 is assembled, the rear wall portion 16 is generally in the form of a flat plate and a rectangular parallelepiped with a longitudinal direction. The rear wall portion 16 is formed of a microduct board. Both longitudinal ends of the rear wall portion 16 are formed lower and have a step compared to the other portions. That is, the rear wall portion 16 is composed of a central portion 16a and peripheral portions 16b and 16c that are formed lower and have a step compared to the central portion 16a. The central portion 16a is formed higher and has a step in the width direction (direction of width w1) compared to the peripheral portions 16b and 16c.

[0045] The main surface facing in the same direction as the outer peripheral portions 16b and 16c is the inner surface 16ab, which will become the inner surface when the main body 10 is constructed. The main surface opposite the inner surface 16ab is the outer surface 16aa, which will become the outer surface when the main body 10 is constructed. The inner surface 16ab of the rear wall portion 16 is curved so that it matches the shape of the long side 12b1 of the central portion 12b of the top wall portion 12 during the assembly process of the main body 10. In Figure 5, both longitudinal ends are curved so that they are lifted toward the front side of the page. The final shape of the inner surface 16ab of the rear wall portion 16 is an arc with a curvature radius r1b (see Figure 2(a)) that matches the shape of the long side 12b1 of the central portion 12b of the top wall portion 12.

[0046] 6 is a schematic diagram showing side wall members 18A and 18B that constitute the side wall portion 18. The side wall members 18A and 18B are generally flat plate-like and have a rectangular parallelepiped shape with a longitudinal direction. The main surfaces have a height h18 and a width w18. The side wall members 18A and 18B are formed from microduct boards.

[0047] <Regarding the members constituting the frame portion 30 and the side frame portions 40> As shown in Fig. 7, the frame portion 30 is composed of a rear frame member 30A shown in Fig. 7 and a front frame member 30B shown in Fig. 8. The rear frame member 30A and the front frame member 30B are formed by processing metal plates. The metal plates are, for example, zinc-plated steel plates (Z18) having a thickness of 0.6 millimeters (mm) to 2.3 millimeters (mm). In this embodiment, the thickness of the metal plates is 0.6 millimeters (mm).

[0048] There are two rear frame members 30A and two front frame members 30B. In a front view of the line box 1 shown in Fig. 1, the two rear frame members 30A are arranged at the upper and lower edge portions on the rear side of the main body 10, and the two front frame members 30B are arranged at the upper and lower edge portions on the front side of the main body 10. The length L1 of the arc of the rear frame member 30A is longer than the length L2 of the arc of the front frame member 30B.

[0049] As shown in FIG. 7, the rear frame member 30A is composed of a first member 32 and a second member 34. The first member 32 is formed in an arc shape in the plan view shown in FIG. 7. That is, the first member 32 is formed by cutting a metal plate into the arc shape shown in FIG. 7. The radius of curvature r1a of the first member 32 is substantially the same as that of the outer surface 16aa of the rear wall portion 16 (see FIG. 5). The radius of curvature of the outer surface 16aa of the rear wall portion 16 is substantially the same as the radius of curvature r1a of the long side 12a1 of the ceiling wall portion 12 (see FIG. 2(a)). The rear long side 32a and the front long side 32b are parallel to each other. The length of the arc of the rear long side 32a is L1. The first member 32 constitutes the main surface of the rear frame member 30A.

[0050] The second member 34, in the pre-assembly state shown in FIG. 7, is formed into an overall rectangular shape with a length L1a. The length L1a is the same as the length L1 of the arc of the first member 32. The second member 34 is configured with a main portion 34a having a longitudinal direction and multiple rectangular portions 34b connected to the main portion 34a. A gap 34s is formed between adjacent rectangular portions 34b. As described below, the second member 34 is curved to match the curved shape of the first member 32 and is fixed to the first member 32 by welding. When the first member 32 and the second member 34 are fixed, the second member 34 has an arc shape with a length L1. The main portion 34a forms an orthogonal plane that is perpendicular to the main surface of the rear frame member 30A.

[0051] When the first member 32 and the second member 34 are fixed together, the rectangular portion 34b of the second member 34 is bent toward the front of the page relative to the main portion 34a along the boundary line 34L between the main portion 34a and the rectangular portion 34b. As indicated by arrow Y1, the rectangular portion 34b and the first member 32 are fixed together by welding so that the boundary line 34L overlaps with the rear long side 32a of the first member 32. At this time, the second member 34 is bent to match the curved shape of the rear long side 32a of the first member 32. However, the presence of the gap 34s allows the main portion 34a to bend without resistance and prevents excessive deformation of the main portion 34a. In FIG. 7, the second member 34 is bent so that both ends are raised toward the front of the page to match the arc-shaped shape of the rear long side 32a of the first member 32.

[0052] As shown in FIG. 8, the front frame member 30B is composed of a third member 36 and a fourth member 38. The third member 36 is formed in an arc shape in the plan view shown in FIG. 8. That is, the third member 36 is formed by cutting a metal plate into the arc shape shown in FIG. 8. The radius of curvature of the third member 36 is r2a, which is substantially the same as that of the outer surface 14aa of the front wall portion 14 (see FIG. 4). The radius of curvature of the outer surface 14aa of the front wall portion 14 is substantially the same as the radius of curvature r2a of the long side 12a2 of the ceiling wall portion 12 (see FIG. 2(a)). The rear long side 36b and the front long side 36a are parallel to each other. The arc length of the front long side 36a is L2. The third member 36 constitutes the main surface of the front frame member 30B.

[0053] The fourth member 38, in the pre-assembly state shown in FIG. 8, is formed into an overall rectangular shape with a length L2a. The length L2a is the same as the length L2 of the arc of the third member 36. The fourth member 38 is configured with a main portion 38a having a longitudinal direction and multiple rectangular portions 38b connected to the main portion 38a. A gap 38s is formed between adjacent rectangular portions 38b. As described below, the fourth member 38 is curved to match the shape of the third member 36 and is fixed to the third member 36 by welding. When the third member 36 and the fourth member 38 are fixed, the fourth member 38 has an arc shape with a length L2. The main portion 38a forms an orthogonal plane that is perpendicular to the main surface of the front frame member 30B.

[0054] When the third member 36 and the fourth member 38 are fixed together, the rectangular portion 38b of the fourth member 38 is bent toward the back of the page relative to the main portion 38a along a boundary line 38L between the main portion 38a and the rectangular portion 38b. As indicated by arrow Y2, the rectangular portion 38b is fixed to the third member 36 in a state where the boundary line 38L overlaps with the front long side 36a of the third member 36. At this time, the fourth member 38 is curved to match the shape of the third member 36, but the presence of the gap 38s allows the main portion 38a to bend without resistance and prevents excessive deformation of the main portion 38a. In other words, the fourth member 38 is bent so that both ends are raised toward the front of the page in FIG. 8 to match the arc-shaped shape of the front long side 36a of the third member 36.

[0055] As shown in FIG. 9, the side frame portion 40 is composed of side frame members 40A and 40B. The side frame members 40A and 40B are respectively arranged at both ends of the main body 10 and cover both ends of the main body 10. The side frame members 40A and 40B are formed from the same metal plate as the frame portion 30 described above. The side frame members 40A and 40B are each composed of a front frame portion 40a and side walls 40b to 40e. A rectangular opening 40s is formed in the front frame portion 40a.

[0056] <About hanging components> FIG. 10 is a schematic diagram showing a hanging member 41 for hanging the line box 1 from a structure inside the ceiling of a building. The hanging member 41 is composed of plate-shaped members 42 and 44, bolts 46, and nuts 48. The plate-shaped member 42 is composed of a rectangular main surface portion 42a and side portions 42b and 42c bent at right angles from the main surface portion 42. A through-hole 42s is formed in the center of the main surface portion 42a. The plate-shaped member 44 is a rectangular member and has a through-hole 44s formed in the center. The bolt 46 is composed of an enlarged diameter portion 46a and a shaft portion 46b. A male thread is formed in the shaft portion 46b. The length of the shaft portion 46 is longer than the thickness w1 of the center portion 12b of the ceiling wall portion 12. With the ceiling member 12 sandwiched between the plate-like members 42 and 44, bolts 46 pass through the through holes 42s and 44s and are fixed in place with nuts 48. During assembly of the line box 1, the shaft 46 is left protruding toward the main surface 12ba of the central portion 12b. After the line box 1 is completed, the expanded diameter portion 46a and the shaft 46b are caused to protrude toward the back surface 12c (see FIG. 2(a)), and the expanded diameter portion 46a is connected to the structure inside the ceiling.

[0057] <Regarding the members constituting the discharge section 50> The discharge section 50 is composed of a rear plate section 50A shown in Fig. 11, a front plate section 50B shown in Fig. 12, and a side plate section 60 shown in Fig. 13. The side plate section 60 is composed of side plate members 60A and 60B. The rear plate section 50A, the front plate section 50B, and the side plate members 60A and 60B are formed by processing metal plates similar to the above-mentioned rear frame member 30A, etc.

[0058] As shown in Fig. 11, the rear plate portion 50A is composed of a first plate member 52 and a second plate member 54. In the plan view shown in Fig. 11, the first plate member 52 and the second plate member 54 are formed in a substantially rectangular shape with a length L3 before the main body 10 is assembled. The length L3 is substantially the same as the length L12b1 of the rear long side 12b1 of the central portion 12b of the ceiling wall portion 12. To be precise, the length L3 is shorter than the length L12b1 of the long side 12b1 by twice the thickness of the metal plate (approximately 1.2 millimeters).

[0059] The second plate member 54 is configured by arranging a plurality of rectangular portions 54b on a main portion 54a. A gap 54s is formed between adjacent rectangular portions 54b. When the first plate member 52 and the second plate member 54 are fixed together, the rectangular portions 54b of the second plate member 54 are bent toward the back of the drawing relative to the main portion 54a along a boundary line 54L between the main portion 54a and the rectangular portions 54b. After the first plate member 52 and the second plate member 54 are bent with a predetermined radius of curvature, the main portion 54a of the second plate member 54 is fixed by welding to the back of the drawing of the first plate member 52 in FIG. 11 in such a manner that the lower end 54aa of the main portion 54a overlaps the lower end 52b of the first plate member 52, as shown by arrow Y3. The predetermined radius of curvature around which the first plate member 52 and the second plate member 54 are curved is substantially the same as the radius of curvature of the rear wall portion 16, that is, radius of curvature r1b (see FIG. 2(a)).

[0060] As shown in Fig. 12, the front plate portion 50B is composed of a third plate member 56 and a fourth plate member 58. In the plan view shown in Fig. 12, the third plate member 56 and the fourth plate member 58 are formed in a substantially rectangular shape with a length L4 before the main body 10 is assembled. The length L4 is substantially the same as the length L12b2 of the long side 12b2 on the front side of the central portion 12b of the ceiling wall portion 12. To be precise, the length L4 is shorter than the length L12b2 of the long side 12b2 by twice the thickness of the metal plate (approximately 1.2 millimeters).

[0061] The fourth plate member 58 has a main portion 58a and a plurality of rectangular portions 58b arranged thereon. A gap 58s is defined between adjacent rectangular portions 58b. When the third plate member 56 and the fourth plate member 58 are fixed together, the rectangular portions 58b of the fourth plate member 58 are bent toward the front of the drawing relative to the main portion 58a along a boundary line 58L between the main portion 58a and the rectangular portions 58b. After the third plate member 56 and the fourth plate member 58 are bent with a predetermined radius of curvature, the main portion 58a of the fourth plate member 58 is fixed by welding to the front of the drawing of the third plate member 56 in FIG. 12 in such a manner that the lower end portion 58aa of the main portion 58a overlaps the lower end portion 56b of the third plate member 56, as indicated by arrow Y4. The predetermined radius of curvature around which the third plate member 56 and the fourth plate member 58 are curved is substantially the same as the radius of curvature of the front wall portion 14, that is, radius of curvature r2b (see FIG. 2(a)).

[0062] 13, the side plates 60A and 60B each include a central portion 60a and side portions 60b and 60c. In the manufacturing process of the line box 1, the side portions 60b and 60c are bent toward the front of the paper in FIG. 13 relative to the central portion 60a.

[0063] <About the assembly process of Line Box 1> The assembly process of the line box 1 will be described below with reference to FIGS. First, as shown in FIG. 14 , a hanging member 41, including plate-like members 42 and 44, is placed on the ceiling wall portion 12. The plate-like members 42 and 44 are fixed in place with bolts 46 and nuts 48, sandwiching the ceiling wall portion 12 between them in the thickness direction of the ceiling wall portion 12. At this time, the rectangular main surface 42a of the plate-like member 42 contacts the main surface 12ba of the central portion 12b of the ceiling wall portion 12, and the side surfaces 42b and 42c of the plate-like member 42 contact the side surfaces 12bb of the central portion 12b of the ceiling wall portion 12. In other words, the side surfaces 42b and 42c of the plate-like member 42 sandwich the central portion 12b in the width direction. This prevents the plate-like member 42 from rotating inside the line box 1 when the line box 1 is attached to a building.

[0064] 15 and 16, the supply port 20 is inserted into the opening 14s of the front wall 14 and fixed. As indicated by arrow X1 in Fig. 15, the annular tip portion 20aa of the cylindrical main body 20a of the supply port 20 is inserted from the inner surface 14ab side toward the outer surface 14aa of the front wall 14, and the supply port is fixed in a state where the expanded diameter portion 20b abuts against the inner surface 14ab. The cylindrical main body 20a protrudes toward the outer surface 14aa of the front wall 14.

[0065] Next, the front wall 14 is curved. As shown in FIG. 19, the outer surface 14aa of the front wall 14 becomes concave, and the inner surface 14ab becomes convex. In other words, the outer surface 14aa of the front wall 14 becomes the inside of the arc, and the inner surface 14ab becomes the outside of the arc. At this time, for example, a jig 25 shown in FIG. 17(a) is used. The radius of curvature of the inner surface 25b of the jig 25 is the same as the radius of curvature of the front wall 14 when the main body 1 is completed. Specifically, the radius of curvature is r2b (see FIG. 2). The material of the jig 25 is not limited, but it may be made of metal or wood, for example. As shown in FIG. 18, the jig 25 is brought into contact with the inner surface 14ab of the front wall 14, and the front wall 14 is pressed from the outer surface 14aa side to conform to the shape of the inner surface 25b of the jig 25. 19, the jig 25 is not in contact with the lower part of the front wall 14 in an area of ​​height t1. The height t1 is set to be substantially the same as the height of the side surface 12bb of the central portion 12b. This makes it easier to fix the front wall 14 to the ceiling wall 12 in a later step while keeping the jig 25 in contact with the front wall 14.

[0066] Next, as shown in Fig. 20 , the front wall portion 14 is temporarily fixed to the ceiling wall portion 12 in a manner such that the lower end portion and the vicinity of the lower end portion are in contact with the main surface 12aa of the outer peripheral portion 12a of the ceiling wall portion 12 and the side surface 12bb of the central portion 12b. The jig 25 is not shown in Fig. 20 . Furthermore, when the jig 25 is removed in the state shown in Fig. 20 , the front wall portion 14 attempts to return from the curved state to a flat state due to its elasticity. However, the curved state can be maintained by temporarily fixing the front wall portion 14 to the ceiling wall portion 12 using, for example, adhesive tape 15. That is, the flat, plate-like front wall portion 14 is deformed into an arc shape and temporarily fixed to the ceiling wall portion 12 within a time period during which it retains its elasticity.

[0067] 21, the rear wall portion 16 is temporarily fixed to the ceiling wall portion 12. The method of curving and fixing the rear wall portion 16 is the same as that for the front wall portion 14 described above. As shown in FIG. 21, the inner surface 16ab of the rear wall portion 16 is concave, and the outer surface 16aa is convex. In other words, the inner surface 16ab of the rear wall portion 16 is the inside of the arc, and the outer surface 16aa is the outside of the arc. The jig used to curve it has a different radius of curvature from jig 25; for example, jig 26 (see FIG. 17(b)) is used. The outer surface 26a of jig 26 is abutted against the inner surface 16ab of the rear wall portion 16, and the rear wall portion 16 is conformed to the shape of jig 26. The radius of curvature of the outer surface 26a of jig 26 is the same as the radius of curvature of the rear wall portion 16 when the main body 1 is completed. Specifically, the radius of curvature is r1b (see FIG. 2(a)).

[0068] 21 , the front wall portion 14 is disposed on the inside of an arc in plan view relative to the rear wall portion 16. This arrangement may be expressed as the front wall portion 14 being disposed on the inside of a curved shape relative to the rear wall portion 16. Alternatively, it may be expressed as the front wall portion 14 being disposed on the concave side opposite the convex side of the rear wall portion 16.

[0069] Next, as shown in FIG. 22, the side walls 18A and 18B are arranged between the rear wall 16 and the front wall 14. At this time, the side walls 18A and 18B also contact the top wall 12. The side wall 18A contacts and is positioned with the main surface 12aa of the outer periphery 12a of the top wall 12, the side surface 12bb of the central portion 12b, the outer periphery 14b of the front wall 14, and the inner side of the outer periphery 16b of the rear wall 16. The side wall 18B contacts and is positioned with the main surface 12aa of the outer periphery 12a of the top wall 12, the side surface 12bb of the central portion 12b, the outer periphery 14c of the front wall 14, and the inner side of the outer periphery 16c of the rear wall 16. The state shown in FIG. 22 is called box body 10A.

[0070] Next, as indicated by arrows X2 and X3 in Figure 23, frame members 40A and 40B are placed on both ends of box body 10A in Figure 22 (see Figure 24). The state in Figure 24 is referred to as box body 10B. In box body 10B, the width between the inner surfaces of front wall portion 14 and rear wall portion 16 is width w50.

[0071] Next, as shown in FIG. 25, the first member 32 and the second member 34 are fixed together to create a rear frame member 30A. Two rear frame members 30A are created. The second member 34 is formed by bending the rectangular portion 34b toward the front of the page relative to the main portion 34a along a boundary line 34L between the main portion 34a and the rectangular portion 34b, with the boundary line 34L overlapping the rear long side 32a of the first member 32. The first member 32 and each rectangular portion 34b are then spot-welded together in a manner such that the bottom surface 32d of the first member 32 and the top surface 34ba of each rectangular portion 34b are in contact with each other in FIG. 25. Spot welding is a technique in which electrodes are used to apply pressure to the metals to be joined from above and below, causing an electric current to flow, melting the metals with the heat generated by electrical resistance.

[0072] Next, as shown in FIG. 26, the third member 36 and the fourth member 38 are fixed together to create the rear frame portion 30B. Two rear frame portions 30B are created. The fourth member 38 is formed by bending the rectangular portion 38b toward the rear of the page relative to the main portion 38a along a boundary line 38L between the main portion 38a and the rectangular portion 38b, and the third member 36 and the rectangular portion 38b are spot-welded together in such a manner that the boundary line 38L overlaps with the rear long side 36a of the third member 36. In FIG. 26, the third member 36 and each rectangular portion 38b are spot-welded together with the bottom surface 36d of the third member 36 in contact with the top surface 38ba of each rectangular portion 38b.

[0073] Next, as shown in FIG. 27, the rear plate portion 50A that constitutes the discharge section 50 is assembled. As shown in FIG. 27, the first plate member 52 and the second plate member 54 are curved to a predetermined radius of curvature. The first plate member 52 is curved using a manual three-roll bender. The second plate member 54 is also curved, for example, using a manual three-roll bender to match the shape of the first plate member 52. The predetermined radius of curvature is substantially the same as radius r1b (see FIG. 2(a)). The second plate member 54 is bent toward the back of the paper with respect to the main portion 54a along the boundary line 54L between the main portion 54a and the rectangular portion 54b. The main portion 54a of the second plate member 54 is fixed to the back of the paper of the first plate member 52, with the lower end 54aa of the main portion 54a overlapping the lower end 52b of the first plate member 52 (see FIG. 28). For example, the first plate member 52 and the second plate member 54 are spot-welded at a plurality of positions 52p of the first plate member 52 and a plurality of positions 54p of the second plate member 54.

[0074] Similarly, as shown in FIG. 29, the front plate 50B constituting the discharge section 50 is assembled. As shown in FIG. 29, the third plate member 56 and the fourth plate member 58 are bent to a predetermined radius of curvature. The third plate member 56 is curved using a manual three-roll bender. The fourth plate member 58 is also curved, for example, using a manual three-roll bender to match the shape of the third plate member 56. The predetermined radius of curvature is substantially the same as the radius r2b (see FIG. 2(a)). The fourth plate member 58 is bent toward the front of the paper with respect to the main portion 58a along a boundary line 58L between the main portion 58a and the rectangular portion 58b. The main portion 58a of the fourth plate member 58 is fixed to the front of the paper of the third plate member 56, with the lower end 58aa of the main portion 58a overlapping the lower end 56b of the third plate member 56 (see FIG. 30). For example, the third plate member 56 and the fourth plate member 58 are spot-welded at a plurality of positions 56p of the third plate member 56 and a plurality of positions 58p of the fourth plate member 58.

[0075] Next, as shown in FIGS. 31 and 32 , the rear plate portion 50A, the front plate portion 50B, and the side plate portions 60A and 60B are connected to form the discharge portion 50. The side plate portion 60A is fixed to the rear plate portion 50A and the front plate portion 50B with the side portions 60b and 60c of the side plate portion 60A contacting the outer edges of the rear plate portion 50A and the front plate portion 50B, respectively. For the side plate portion 60A, multiple positions 60q on the side portion 60c are spot-welded to multiple positions 52p on the rear plate portion 50A, and multiple positions 60p on the side portion 60b are spot-welded to multiple positions 56q on the front plate portion 50B. Similarly, for the side plate portion 60B, multiple positions 60p on the side portion 60b are spot-welded to multiple positions 52p on the rear plate portion 50A, and multiple positions 60q on the side portion 60c are spot-welded to multiple positions 56q on the front plate portion 50B. As shown in Fig. 32, side portions 60b and 60c of side plate portions 60A and 60B are located above rectangular portions 54b and 58b. The width of discharge portion 50 is substantially width w50, which is substantially the same as the width w50 between front wall portion 14 and rear wall portion 16 of box body 10B (see Fig. 24).

[0076] Next, as shown in Figures 33 and 34, the discharge part 50 is attached to the box body 10B. The curved direction of the discharge part 50 is aligned with the curved direction of the box body 10B, and the discharge part 50 is inserted into the box body 10B up to the position of the rectangular parts 54b and 58b of the discharge part 50. This brings the rectangular part 54b into contact with the side surface 16d of the rear wall part 16, and the rectangular part 58b into contact with the side surface 14d of the front wall part 14. This state is called box body 10C (see Figure 34).

[0077] Next, the rear frame member 30A and the front frame member 30B are fixed to the box body 10C of FIG. 34 to form the box body 10D (see FIG. 35). Specifically, the rear frame member 30A and the front frame member 30B are fixed to the side frame members 40A and 40B with screws. Prior to this step, the temporary fixation of the rear wall portion 16 and the front wall portion 14 is released. At this stage, the rear frame member 30A and the front frame member 30B are in an elastically deformed state and will return to their original flat state if the external force is removed. However, the ceiling wall portion 12, the rear frame member 30A, the front frame member 30B, and the side frame members 40A and 40B prevent the shape from changing, so they cannot return to their original flat state and maintain their arc-shaped state. Next, as shown in FIG. 36, a sheet 80 is fixed to the outer periphery of the discharge portion 50 of the box body 10D. The state shown in FIG. 36 is referred to as box body 10E.

[0078] Next, a U-shaped member 70 (see FIG. 37(b)) is connected to the box body 10E (see FIG. 37(a)). As shown in FIG. 37(b), the U-shaped member 70 is composed of a base 70a and vertical wall portions 70b and 70c. The vertical wall portions 70b and 70c are formed integrally with the base 70a in a manner such that they are bent vertically from both ends of the rectangular base 70a in a plan view. Screw holes 70aa and 70ab are formed in the base 70a, a screw hole 70ba is formed in the vertical wall portion 70b, and a screw hole 70ca is formed in the vertical wall portion 70c. The U-shaped member 70 is formed from the same metal plate as the frame portion 30 described above.

[0079] 37(a), the base 70a of the U-shaped member 70 connects two rear frame members 30A and two front frame members 30B. In this embodiment, two U-shaped members 70 are arranged, but the number is not limited thereto, and may be, for example, three, four or more.

[0080] Thereafter, adhesive is used to connect each component as needed, and the line box 1 is completed (see Figure 38). The adhesive is, for example, a vinyl acetate resin emulsion wood bond. Furthermore, a sealant is applied between each component as needed. The sealant is, for example, a nitrile rubber duct sealer.

[0081] Figures 39, 40, 41, and 42 are schematic cross-sectional views of the line box 1 in Figure 38 taken along lines AA, DD, BB, and CC, respectively. The schematic cross-sectional view of line AA in Figure 39 and the schematic cross-sectional view of line DD in Figure 40 are schematic cross-sectional views of both ends of the line box 1 where the side frame portions 40A and 40B are located, respectively. The schematic cross-sectional view of line BB in Figure 41 is a schematic cross-sectional view of the portion where the U-shaped member 70 is located. The schematic cross-sectional view of line CC in Figure 42 is a schematic cross-sectional view of the center portion in the longitudinal direction of the line box 1 where the supply port 20 is located. Note that the "upper end" and "lower end" in the explanations referring to Figures 39 to 42 refer to the top and bottom on the paper of Figures 39 to 42. Because Figures 39 to 42 are schematic cross-sectional views, notations of screws, adhesives, etc. are omitted.

[0082] As shown in FIG. 39 , near one longitudinal end of the line box 1, the side wall member 18B is held in contact with the rear wall 16, the front wall 14, and the ceiling wall 12. The side frame 40B contacts and covers the outer surface and upper side surface of the rear wall 16, the outer surface and upper side surface of the front wall 14, the outer surface 12c and both side surfaces of the ceiling wall 12, and the upper side surface of the side wall member 18B. The two rear frame members 30A are fixed in contact with the upper corners and their vicinity, and the lower corners and their vicinity, of the side frame members 40B, respectively. Similarly, the two front frame members 30B are fixed in contact with the upper corners and their vicinity, and the lower corners and their vicinity, of the side frame members 40B, respectively.

[0083] As shown in FIG. 40, near a different longitudinal end of the line box 1 from that shown in FIG. 39, the side wall member 18A is held in contact with the rear wall 16, the front wall 14, and the ceiling wall 12. The side frame 40A contacts and covers the outer surface and upper side of the rear wall 16, the outer surface and upper side of the front wall 14, the outer surface 12c and both side surfaces of the ceiling wall 12, and the upper side of the side wall member 18A. The two rear frame members 30A are fixed in contact with the upper corner and its vicinity, and the lower corner and its vicinity, of the side frame 40A, respectively. Similarly, the two front frame members 30B are fixed in contact with the upper corner and its vicinity, and the lower corner and its vicinity, of the side frame 40A, respectively.

[0084] 41, the rear plate 50A of the discharge section 50 is fixed in contact with the inner surfaces of the rear frame member 30A and the rear wall 16. The front plate 50B is fixed in contact with the inner surfaces of the front frame member 30B and the front wall 14. The U-shaped member 70 is fixed in contact with the two rear frame members 30A and the two front frame members 30B.

[0085] As shown in FIG. 42, the supply port 20 protrudes from the inner surface of the front wall portion 14 toward the outer surface.

[0086] <Effects of Line Box 1> The effect of the line box 1 will be described with reference to Figures 43 and 44. The line box 1 is placed in a curved opening 200 formed in Room C, which is the ceiling. The line box 1 is placed in Room C in a state upside down from the state shown in Figure 38 during the manufacturing process. When conditioned air Air1 is supplied to the supply port 20 of the line box 1, the conditioned air Air1 changes direction when it hits the inner surface of the line box 1 and becomes exhaust air Air3, which is then supplied to Room M, which is the room. As shown in Figure 44, inside the line box 1, after hitting the back wall portion 16, Air1 changes direction to Room M through the exhaust port 50. However, in parallel with this change in direction, Air1 tends to flow toward the side walls at both ends, where the air pressure is lower. Here, the back wall portion 16 is formed in an arc shape with the direction of entry of Air1 facing inward. Therefore, when Air1 hits the back wall portion 16, the air flow has a vector component directed toward the center, as shown by the dashed arrow in Figure 44. This reduces the tendency for the air to flow toward the side wall where the air pressure is lower, and the volume of exhaust air is made uniform in the longitudinal direction of the curved opening 200.

[0087] Second Embodiment A curved GW line box 1X (hereinafter referred to as "line box 1X") of the second embodiment will be described with reference to Figures 45 and 46. Note that a description of matters common to the first embodiment will be omitted, and differences from the first embodiment will be briefly described.

[0088] It is assumed that both ends in the longitudinal direction are formed in an arc shape, as in the curved opening 200X in Fig. 45. In this case, like the line box 1X, both ends in the longitudinal direction of the discharge section 50X and the line box main body 10X are also configured in an arc shape, as in the line box 1X, so as to match the shape of the curved opening 200X in plan view.

[0089] 46 is a schematic perspective view showing a ceiling wall portion 12X of the second embodiment. Both longitudinal ends of the ceiling wall portion 12X are formed in an arc shape. Specifically, both ends of the outer peripheral portion 12a and both ends of the central portion 12b are formed in an arc shape. Other members constituting the line box 1X are also configured to match the configuration of the ceiling wall portion 12X.

[0090] <First Reference Example> The first reference example will be described with reference to Fig. 47. Note that a description of matters common to the first embodiment will be omitted, and only differences from the first embodiment will be briefly described.

[0091] Figure 47 is a schematic diagram showing a line box 1Y ​​of a reference example. As shown in Figure 47(a), the line box 1Y ​​has a line box main body 110Y and an outlet 150Y. The opening of the outlet 150Y is rectangular. As shown in Figure 47(b), in the line box main body 110Y, the front wall 110b where the supply port 120 is located is flat, but the back wall 110a is curved in an arc shape with the supply port 120 facing inward.

[0092] In the line box 1Y, too, the flow of conditioned air entering through the supply port 120 has a vector component directed toward the center in the longitudinal direction of the line box body 110Y when it hits the rear wall 110a, thereby mitigating the tendency for the air to flow toward both ends where the air pressure is low. This makes the volume of conditioned air discharged uniform in the longitudinal direction of the discharge port 150Y.

[0093] According to the line box 1Y, when the indoor opening is rectangular, the outflow amount of air can be made uniform in the longitudinal direction.

[0094] <Second Reference Example> The second reference example will be described with reference to Fig. 48. Note that a description of matters common to the first embodiment will be omitted, and only differences from the first embodiment will be briefly described.

[0095] Figure 48 is a schematic diagram showing a line box 1Z of a reference example. As shown in Figure 48(a), the line box 1Z has a line box main body 110Z and an outlet 150Z. The line box main body 110Z is a rectangular parallelepiped, and has a curved wall portion 130 arranged therein that has an arc shape when viewed from the arrow Z1 direction and the arrow Z2 direction. A supply port 120 is arranged inside the arc shape of the curved wall portion 130.

[0096] Fig. 48(b) is a schematic plan view of the line box body 110Z as viewed from the direction of arrow Z2, with the internal curved wall portion 130 indicated by a dashed line. Fig. 48(c) is a schematic plan view of the line box body 110Z as viewed from the direction of arrow Z1, with the internal curved wall portion 130 indicated by a solid line.

[0097] In the line box 1Z, too, the flow of conditioned air entering through the supply port 120 has a vector component directed toward the center in the longitudinal direction of the line box body 110Z when it hits the curved wall portion 130, thereby mitigating the tendency for the air to flow toward both ends where the air pressure is low. This makes the volume of conditioned air discharged uniform in the longitudinal direction of the discharge port 150Y.

[0098] According to the line box 1Z, when the indoor opening is rectangular, the outflow amount of air can be made uniform in the longitudinal direction.

[0099] The line box of the present invention is not limited to the above-described embodiment, and various modifications can be made without departing from the spirit of the present invention. Furthermore, the above-described embodiments and reference examples can be combined as appropriate as long as no technical contradiction occurs. [Explanation of symbols]

[0100] 1,1X,1Y,1Z curved GW line box 10,10X Line Box Body 12,12X Ceiling wall 14 Front wall 16 Back wall 18 Side wall 18A, 18B Side wall members 20 supply port 30 Frame 30A Rear frame member 30B Front frame member 32 First member 34 Second member 36 Third member 38 Fourth member 40 Side frame 40A, 40B Side frame members 50,50X discharge section 50A back plate part 50B Front plate part 52 First plate member 54 Second plate member 56 Third plate member 58 Fourth plate member 60 Side plate part 60A, 60B Side plate members 70 U-shaped member 80 sheets

Claims

1. A curved GW line box having a hollow box-shaped line box body and an exhaust section connected to the line box body and exhausting conditioned air sent from the line box body, The discharge section is The container is formed in a cylindrical shape having a longitudinal direction and an opening in a direction perpendicular to the longitudinal direction, The longitudinal direction is configured, and the rear plate portion and the front plate portion are arranged in parallel, The rear plate portion and the front plate portion are formed in a curved or arcuate shape, The line box body includes: In a plan view, the shape is substantially similar to that of the discharge portion, The portion connected to the discharge part is open, and the discharge part can be inserted into the opening. The storage unit has a ceiling wall portion, and a rear wall portion and a front wall portion that are arranged parallel to each other, The rear wall portion and the front wall portion are formed in a curved or arcuate shape, the front wall portion is disposed inside the curved shape or the arc shape with respect to the rear wall portion, An opening is formed in the front wall portion to introduce conditioned air from an air conditioner into the line box body, A cylindrical supply port is disposed in the opening. Curved GW line box.

2. The curved GW line box is made of metal and has a frame that covers the line box body, The line box body is made of an elastic material, The curved GW line box according to claim 1, wherein the line box body is maintained in a curved or arc-shaped state by elastic deformation due to the frame portion.

3. The curved GW line box is made of metal and has a frame that covers the line box body, The line box body is formed of a material that undergoes elastic deformation in a relatively short time and plastic deformation after a relatively long time has passed, The line box body includes: During the short period of time, the frame portion maintains the curved or arc-shaped state elastically deformed, After the long period of time has elapsed, the elastically deformed curved or arc-shaped state is maintained without relying on the frame portion. The curved GW line box according to claim 1.

4. The curved GW line box is made of metal and has a frame that covers the line box body, The line box body is formed of a micro duct board, The line box body is elastically deformed by the frame portion and maintained in a curved or arc-shaped state, The microduct board is a plate-shaped material made by solidifying glass fiber with a thermosetting resin and finishing the outer part with aluminum foil reinforced with glass thread. The curved GW line box according to claim 1.

5. a plurality of rectangular portions are arranged on the rear plate portion and the front plate portion of the discharge portion, the rectangular portions protruding outward from the discharge portion in a direction substantially perpendicular to the height direction; a part of the discharge section in the height direction is inserted into the inside of the line box body in a manner that the part is in contact with the rear wall portion and the front wall portion of the line box body, and the rectangular portion is in contact with the side portions of the rear wall portion and the front wall portion, thereby defining a positional relationship between the discharge section and the line box body; The curved GW line box according to claim 2, wherein the rectangular portion is sandwiched between the side portions of the rear wall portion and the front wall portion and the frame portion, thereby maintaining a fixed state between the discharge portion and the line box main body.

6. The ceiling wall portion is formed to have an outer periphery and a central portion, the central portion is located inside the outer circumferential portion, is formed in a shape substantially similar to the outer circumferential portion, and is formed to be higher than the outer circumferential portion by having a step; The curved GW line box according to claim 1, wherein the rear wall portion and the front wall portion are configured to be positioned by the main surface of the outer periphery and the side surface of the central portion.

7. The line box body has a side wall portion disposed between the rear wall portion and the front wall portion, The rear wall portion and the front wall portion have portions near both ends that are lower than other portions of the rear wall portion and the front wall portion, The curved GW line box according to claim 1, wherein the side wall portion is configured to be positioned by the main surface of the outer periphery of the ceiling wall portion, the side surface of the central portion, and the rear wall portion and the vicinity of both ends of the front wall portion.

8. The frame portion is a rear frame member formed in a curved or arcuate shape substantially identical to an end portion of the rear wall portion along the longitudinal direction, and a front frame member having a curved or arcuate shape substantially identical to an end portion of the front wall portion along the longitudinal direction, The rear frame member and the front frame member are formed by processing plate-shaped members, The rear frame member is It is composed of a first member and a second member, Before assembly of the frame portion, the first member is formed such that the plate-like member has a curved or arcuate shape substantially identical to an end portion along the longitudinal direction of the rear wall portion, and is formed so as to constitute a main surface of the rear frame member, The second member is formed such that, before assembly of the frame portion, the plate-like member is processed to have an overall rectangular shape in a plan view, and has a main portion having a longitudinal direction and a plurality of rectangular portions connected to the main portion, the main portion of the second member is curved to match the shape of the first member in an assembly process of the frame, and forms an orthogonal surface that is orthogonal to the main plane, and the rectangular portion and the first member are fixed by welding; The front frame member is It is composed of a third member and a fourth member, the third member is formed such that, before assembly of the frame portion, the plate-like member is formed in a curved or arcuate shape that is substantially the same as an end portion along the longitudinal direction of the front wall portion, and constitutes a main surface of the front frame member; the fourth member is formed by processing a plate-like member into an overall rectangular shape in a plan view before assembling the frame portion, and is formed to have a main portion having a longitudinal direction and a plurality of rectangular portions connected to the main portion, 3. The curved GW line box according to claim 2, wherein the main portion of the fourth member is curved to match the shape of the third member during the assembly process of the frame portion, thereby forming an orthogonal plane perpendicular to the main plane, and the rectangular portion and the third member are fixed by welding.

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