Exterior wall panels and building

Abstract

To provide an exterior wall panel 1 capable of improving heat insulation performance.SOLUTION: An exterior wall panel 1 is provided for a building. This exterior wall panel 1 comprises: a rectangular metal framework 2; a plurality of furring strips 3 secured to a side which become outer wall surfaces 1o of the framework 2; and a cladding 4 secured to the furring strips 3 to constitute the outer wall surface 1o. At least one of the furring strips 3 includes a heat insulating furring strip 3B. The heat insulating furring strip 3B includes a composite material 18 in which a first part 14 made of a wooden material 16 and a second part 15 made of a heat insulating material 17 higher in heat resistance than the wooden material 16 are stacked in a panel thickness direction.SELECTED DRAWING: Figure 2

Description

Technical Field

[0001] The present invention relates to an outer wall panel and a building.

Background Art

[0002] Conventionally, various outer wall panels for forming the outer wall of a building have been proposed (see, for example, Patent Document 1 below).

Prior Art Document

Patent Document

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] In recent years, due to the tight supply and demand of electric power and the soaring energy prices, etc., there has been an increasing interest in energy-saving buildings. Along with this, for the outer wall panels constituting the outer skin of a building, further improvement in heat insulation performance has been demanded.

[0005] The present invention has been devised in view of the above actual situation, and the main object thereof is to provide an outer wall panel capable of improving heat insulation performance.

Means for Solving the Problems

[0006] The present invention is an outer wall panel of a building, including a metal and rectangular frame, a plurality of body edges fixed to the side that becomes the outer wall surface of the frame, and an exterior material fixed to the body edges to form the outer wall surface, at least one of the body edges includes a heat insulation body edge, and the heat insulation body edge includes a composite material in which a first part made of a wood material and a second part made of a heat insulation material having a higher thermal resistance than the wood material are overlapped in the panel thickness direction.

Effects of the Invention

[0007] By adopting the above configuration, the exterior wall panel of the present invention can improve thermal insulation performance. [Brief explanation of the drawing]

[0008] [Figure 1] This is a cross-sectional view showing a building to which the exterior wall panels of this embodiment are attached. [Figure 2] This is a partial perspective view of the exterior wall panel. [Figure 3] This is a perspective view showing the frame and furring strips. [Modes for carrying out the invention]

[0009] Embodiments of the present invention will be described below with reference to the drawings. It should be understood that the drawings contain exaggerations and representations that differ from the actual dimensional ratios of the structures in order to aid in understanding the content of the invention. Furthermore, the same or common elements are denoted by the same reference numerals throughout each embodiment, and redundant explanations are omitted. Moreover, the specific configurations shown in the embodiments and drawings are for the purpose of understanding the content of the present invention, and the present invention is not limited to the specific configurations shown in the drawings.

[0010] [building] Figure 1 is a cross-sectional view showing building B to which the exterior wall panel 1 of this embodiment is attached. In this embodiment, building B is exemplified as a house, but it may also be a building such as a commercial building.

[0011] [Exterior wall panels] The exterior wall panel 1 is fixed to the building B via a frame structure F, which includes, for example, columns and beams. Figure 2 is a partial perspective view of the exterior wall panel 1.

[0012] As shown in Figures 1 and 2, the exterior wall panel 1 is composed of a frame 2, furring strips 3, and exterior cladding 4. Preferably, these frame 2, furring strips 3, and exterior cladding 4 are integrally fixed together, for example, in a factory. This makes it possible to shorten the construction period of building B and stabilize the quality of the exterior wall panel 1.

[0013] The exterior wall panel 1 may include interior finishing material 5 fixed to the side of the frame 2 that becomes the inner wall surface 1i, similar to conventional exterior wall panels 1. This interior finishing material 5 may be fixed integrally with the frame 2, furring strips 3 and exterior finishing material 4 at a factory, for example, or it may be fixed integrally at the construction site.

[0014] [Frame] The frame 2 is made of metal. Such a frame 2 has higher rigidity than, for example, a frame made of wood (not shown), and can improve the durability of the exterior wall panel 1. The metal that makes up the frame 2 may be, for example, steel.

[0015] Figure 3 is a perspective view showing the frame 2 and the furring strips 3. In this embodiment, the exterior wall panel 1 may be composed of one frame 2, but depending on the floor plan of the building B shown in Figure 1 and the presence or absence of openings such as windows, it may be composed of multiple frame 2 as shown in Figure 2. This makes it easy to form exterior wall panels 1 with different specifications such as size.

[0016] As shown in Figure 3, the frame 2 is formed in a rectangular shape when viewed from the front. The space enclosed by the frame 2 contains the first insulation material 6 shown in Figures 1 and 2. The first insulation material 6 may consist of insulation materials including, for example, fibrous insulation materials (such as rock wool or glass wool) or resin-based insulation materials (such as polystyrene foam, urethane foam, or phenolic foam). This first insulation material 6 is preferably placed inside the frame 2, for example, in a factory. A moisture-permeable waterproof sheet (not shown) may also be placed on the outer surface of the first insulation material 6.

[0017] As shown in FIGS. 2 and 3, the frame 2 of the present embodiment includes vertical frame members 7 extending vertically. The vertical frame members 7 include a first vertical frame member 7A and a second vertical frame member 7B.

[0018] The first vertical frame member 7A and the second vertical frame member 7B of the present embodiment include a web 11 and a pair of flanges 12, 12, and are formed in a U-shaped cross section. A recess 13 is formed in the first vertical frame member 7A and the second vertical frame member 7B by these webs 11 and the pair of flanges 12, 12.

[0019] The first vertical frame member 7A constitutes the outer peripheral portion 2c of the frame 2. In the present embodiment, the first vertical frame members 7A, 7A are respectively arranged on both horizontal sides of the frame 2. The recesses 13 of the pair of first vertical frame members 7A, 7A are arranged so as to face the inside of the panel (the inside in the horizontal direction of the frame 2).

[0020] The second vertical frame member 7B is arranged on the inner side of the panel rather than the outer peripheral portion 2c of the frame 2. In the present embodiment, one second vertical frame member 7B is arranged between the pair of first vertical frame members 7A, 7A in the horizontal direction of the frame 2, but two or more second vertical frame members 7B may be arranged. Further, the recess 13 of the second vertical frame member 7B is arranged so as to face one first vertical frame member 7A side (the right side in FIG. 3) of the pair of first vertical frame members 7A, 7A in the horizontal direction of the frame 2.

[0021] As shown in FIGS. 1 and 3, the frame 2 of the present embodiment further includes a horizontal frame member 8 extending horizontally. As shown in FIG. 3, the length of the horizontal frame member 8 of the present embodiment is formed smaller than the length of the vertical frame member 7.

[0022] The horizontal frame member 8 of this embodiment includes an upper horizontal frame member 8A and a lower horizontal frame member 8B. The upper horizontal frame member 8A is joined to the upper ends of a pair of first vertical frame members 7A, 7A and to the upper end of the second vertical frame member 7B. On the other hand, the lower horizontal frame member 8B is joined to the lower ends of a pair of first vertical frame members 7A, 7A and to the lower end of the second vertical frame member 7B. These upper horizontal frame member 8A and lower horizontal frame member 8B, together with the first vertical frame members 7A, 7A, constitute the outer periphery 2c of the frame 2. These vertical frame members 7 and horizontal frame members 8 are joined together, for example, by welding.

[0023] As shown in Figures 1 and 3, the upper horizontal frame member 8A and the lower horizontal frame member 8B of this embodiment, like the vertical frame member 7, include a web 11 and a pair of flanges 12, 12, and are formed in a U-shape in cross-section. These webs 11 and the pair of flanges 12, 12 form recesses 13 in the pair of horizontal frame members 8. The recesses 13 of the upper horizontal frame member 8A and the recesses 13 of the lower horizontal frame member 8B of this embodiment are arranged to face inward towards the panel (inward in the vertical direction of the frame 2).

[0024] As shown in Figure 2, when a single exterior wall panel 1 includes multiple frame frames 2, for example, the first vertical frame members 7A, 7A of adjacent frame frames 2, 2 are joined together. This forms an exterior wall panel 1 that includes multiple frame frames 2.

[0025] [Exterior materials] As shown in Figures 1 and 2, the exterior material 4 is for forming the exterior wall surface 1o of the exterior wall panel 1. This exterior material 4 is fixed to the furring strips 3.

[0026] The exterior material 4 of this embodiment is formed in the shape of a rectangular plate when viewed from the front. This exterior material 4 can be formed as, for example, a foamed concrete panel such as ALC. Decorative materials such as tiles (not shown) may be fixed to the outer surface of this exterior material 4.

[0027] As shown in Figure 2, when a single exterior wall panel 1 includes multiple exterior materials 4, it is preferable to fill the joints formed between adjacent exterior materials 4, 4 with a sealant 23.

[0028] [Wood trim] As shown in Figure 2, multiple furring strips 3 are fixed to the side (flange 12) that becomes the outer wall surface 1o of the frame frame 2. This allows an air layer 9 to be formed between the exterior material 4 and the frame frame 2 (first insulation material 6). As shown in Figures 1 and 3, this embodiment includes furring strips 3 that extend in the vertical direction (vertical furring strips) and furring strips 3 that extend in the horizontal direction (horizontal furring strips).

[0029] [Termite-resistant furring strips] In this embodiment, it is preferable that at least one of the multiple furring strips 3 includes a termite-resistant furring strip 3A with termite-resistant properties. Here, termite-resistant properties refer to the ability to suppress termite invasion (formation of termite tunnels).

[0030] The termite-resistant furring strip 3A of this embodiment is formed by impregnating a wood material 10 with a termite-resistant chemical solution (not shown). The wood material 10 is made of plywood, for example, and is formed as a rectangular timber with a rectangular cross-section.

[0031] The termite-repellent liquid is configured as a liquid containing a termite-repellent agent, for example, as described in a patent document (Japanese Patent No. 6130664). By impregnating the wood material 10 with such a termite-repellent liquid, a termite-repellent furring strip 3A with termite-repellent properties can be formed.

[0032] In this way, by including termite-resistant furring strips 3A in at least one of the multiple furring strips 3, the intrusion of termites into the exterior wall panel 1 can be suppressed. Therefore, the durability performance of the exterior wall panel 1 can be maintained.

[0033] As shown in Figures 2 and 3, it is preferable that the termite-resistant furring strips 3A are fixed to the first vertical frame members 7A, 7A that constitute the outer periphery 2c of the frame 2. This can suppress termites from entering the inside of the exterior wall panel (first insulation material 6, etc.) from both horizontal sides of the exterior wall panel 1 where the first vertical frame members 7A, 7A (termite-resistant furring strips 3A) are placed, via the furring strips 3 (termite-resistant furring strips 3A).

[0034] Furthermore, it is preferable that the termite-resistant furring strips 3A are fixed to the horizontal frame members 8 (upper horizontal frame member 8A and lower horizontal frame member 8B) that constitute the outer perimeter 2c of the frame 2. This can suppress termites from entering the inside of the exterior wall panel 1 (first insulation material 6, etc.) via the furring strips 3 (termite-resistant furring strips 3A) from both the upper and lower sides of the exterior wall panel 1 where the horizontal frame members 8 (termite-resistant furring strips 3A) are placed.

[0035] In this embodiment, termite-resistant furring strips 3A are placed around the entire outer perimeter 2c of the frame 2. This makes it possible to more reliably prevent termites from entering the inside of the exterior wall panel 1 through the furring strips 3 (termite-resistant furring strips 3A).

[0036] [Insulating furring strips] In this embodiment, at least one of the furring strips 3 includes an insulating furring strip 3B. This insulating furring strip 3B includes a composite material 18 in which a first portion 14 and a second portion 15 are superimposed in the panel thickness direction.

[0037] The first part 14 is made of wood material 16. This wood material 16 is made of, for example, plywood and is formed as a rectangular timber with a rectangular cross-section.

[0038] The second part 15 is made of an insulating material 17 that has a higher thermal resistance than the wood material 16. Like the wood material 16, the second part 15 is formed in a horizontally elongated rectangular shape in cross-section. This second part 15 is overlapped with the first part 14 in the panel thickness direction and fixed together, for example, with a known adhesive. The thickness of the second part 15 is set to be approximately the same as the thickness of the first part 14 in the panel thickness direction, but can be set appropriately according to the required thermal insulation performance. Here, "approximately the same" means that manufacturing tolerances are allowed.

[0039] The thermal insulation material 17 can be appropriately selected from among the thermal insulation materials that make up the first thermal insulation material 6, as long as it has a higher thermal resistance than the wood material 16.

[0040] The insulating furring strips 3B reduce the amount of heat transfer between the exterior material 4 and the frame 2, thereby suppressing the transfer of heat from the outside of building B through the exterior material 4 to the inside of building B via the frame 2. Consequently, the exterior wall panel 1 can have its thermal insulation performance improved. Furthermore, in this embodiment, the thermal insulation performance of the exterior wall panel 1 can be improved without increasing the thickness of the exterior wall panel 1 (for example, the thickness of the first insulation material 6) by increasing the thermal resistance of the insulating furring strips 3B.

[0041] Thermal resistance value of insulation material 17 (m 2 The (K / W) value is preferably the thermal resistance value (m) of the wood material 16. 2 The thermal resistance value (m²) of the wood material is 3.5 times or more, and more preferably 6 times or more. This makes it possible for the insulating furring strip 3B to reduce the amount of heat transfer between the exterior material 4 and the frame 2. 2 (K / W) is, for example, 0.05~0.09(m 2 The thermal resistance value of the insulating material 17 is, for example, 0.2~0.9(m 2 It can be set to (kW).

[0042] The insulating furring strips 3B are preferably fixed to the vertical frame members 7. In this embodiment, the length of the vertical frame members 7 is greater than the length of the horizontal frame members 8. By fixing the insulating furring strips 3B to such vertical frame members 7, the amount of heat transfer between the exterior material 4 and the vertical frame members 7 (frame 2) is reduced, improving the thermal insulation performance of the exterior wall panel 1.

[0043] It is preferable that the insulating furring strips 3B are fixed to the second vertical frame member 7B. This reduces the amount of heat transfer between the second vertical frame member 7B and the exterior material 4, thereby improving the thermal insulation performance of the exterior wall panel 1. On the other hand, since the termite-resistant furring strips 3A are fixed to the first vertical frame member 7A and the horizontal frame member 8 that constitute the outer perimeter 2c of the frame, termite-resistant performance can be maintained. Furthermore, unlike the insulating furring strips 3B, the termite-resistant furring strips 3A do not contain thermal insulation material and therefore have high rigidity. For this reason, by placing the termite-resistant furring strips 3A on the outer perimeter 2c of the frame 2 (the first vertical frame member 7A and the horizontal frame member 8), the panel surface strength (in-plane shear force) of the exterior material 4 is improved.

[0044] As shown in Figure 2, it is preferable that the horizontal width W1 of the insulating furring strip 3B is equal to or greater than the horizontal width W2 of the vertical frame member 7. This ensures that at the fixing surface between the vertical frame member 7 and the insulating furring strip 3B, the vertical frame member 7 (flange 12) is covered by the insulating furring strip 3B, thereby effectively reducing the amount of heat transfer between the exterior material 4 and the vertical frame member 7 (frame 2).

[0045] In this embodiment, the first portion 14 of the insulating furring strip 3B is positioned closer to the exterior material 4 than the second portion 15. As described above, since the first portion 14 is made of wood material 16, it has higher rigidity than the second portion 15, which is made of insulating material 17. By positioning the first portion 14 closer to the exterior material 4, for example, compared to the case where the second portion 15 is positioned closer to the exterior material 4, compressive deformation of the second portion 15 is suppressed when screws are driven from the exterior material 4 to the furring strip 3, and sinking of the insulating furring strip 3B is prevented. Such sinking of the insulating furring strip 3B can cause stress on the exterior material 4, which may cause warping or cracking of the exterior material 4 over time. Therefore, in this embodiment, by positioning the first portion 14 closer to the exterior material 4 than the second portion 15, the durability of the exterior wall panel 1 is improved.

[0046] The thermal insulation material 17 of the second part 15 preferably includes phenolic foam from among the thermal insulation materials described above. Like the wood material 16, phenolic foam has the property of carbonizing in the event of a fire. When the thermal insulation material 17 (second part 15) containing such phenolic foam carbonizes together with the wood material 16 in the event of a fire, the temperature rise of the frame 2 (second vertical frame member 7B) is suppressed, and consequently, buckling of the frame 2 can be prevented.

[0047] [Interior materials] As shown in Figures 1 and 2, the interior material 5 is fixed to the side of the frame 2 that becomes the inner wall surface 1i. The interior material 5 in this embodiment includes a base material 19, a second insulation material 20, and an interior base material 21, but some of these may be omitted or other members may be included depending on the specifications of the exterior wall panel 1, etc.

[0048] The base material 19 is made of, for example, particleboard. This base material 19 is placed on the inner wall surface 1i side of the frame 2. The second insulation material 20 is placed on the inner wall surface 1i side of the base material 19 and is formed in a panel shape. This second insulation material 20 may be made of, for example, an insulating material including polystyrene foam, urethane foam, or phenolic foam. The interior base material 21 is made of, for example, gypsum board. This interior base material 21 is placed on the inner wall surface 1i side of the second insulation material 20.

[0049] The interior material 5 and the insulating furring strip 3B, and the interior material 5 and the termite-resistant furring strip 3A, constitute a thermal bridge of the exterior wall panel 1. Of these thermal bridges, the combined thermal resistance of the insulating furring strip 3B and the interior material 5 is 1.7 m 2 It is preferable to set it to kW or higher.

[0050] The thermal resistance values ​​of each component of the insulating furring strip 3B and interior material 5 are calculated by dividing the thickness (m) of each component in the thickness direction of the exterior wall panel 1 by the thermal conductivity (W / (m·K)) of each component.

[0051] The thermal resistance value of the insulating furring strip 3B is calculated by adding the thermal resistance value of the first part 14 (wood material 16) and the thermal resistance value of the second part 15 (insulating material 17). On the other hand, in the case of the interior material 5 of this embodiment, which includes a base material 19, a second insulating material 20, and an interior base material 21, the thermal resistance value of the interior material 5 is calculated by adding the thermal resistance value of the base material 19, the thermal resistance value of the second insulating material 20, and the thermal resistance value of the interior base material 21. Then, the thermal resistance value of the insulating furring strip 3B and the thermal resistance value of the interior material 5 are added together to calculate the total thermal resistance value of the insulating furring strip 3B and the interior material 5.

[0052] The combined thermal resistance of the insulating furring strip 3B and the interior material 5 is 1.7 m 2 By setting the temperature to kW or higher, the thermal insulation performance of the thermal bridge is improved, and the transfer of heat from the outside of building B to the inside of building B via the exterior material 4 and frame 2 can be effectively suppressed. As a result, the exterior wall panel 1 can improve its thermal insulation performance.

[0053] In previous embodiments, an example has been given in which the insulating furring strip 3B is fixed to the second vertical frame member 7B, but the invention is not limited to this embodiment. The insulating furring strip 3B may be fixed not only to the second vertical frame member 7B, but also to the first vertical frame member 7A or the horizontal frame member 8. This makes it possible to further improve the thermal insulation performance of the exterior wall panel 1. In this case, it is preferable that the first part 14 (wood material 16) and the second part 15 (thermal insulation material 17) constituting the insulating furring strip 3B have the above-mentioned termite-resistant properties.

[0054] Although particularly preferred embodiments of the present invention have been described in detail above, the present invention is not limited to the illustrated embodiments and can be implemented in various modified forms.

[0055] [Note] The present invention includes the following embodiments.

[0056] [Invention 1] It is an exterior wall panel for a building, A rectangular metal frame, Multiple furring strips are fixed to the side of the frame that will become the outer wall surface, Includes exterior material that is fixed to the furring strip and constitutes the exterior wall surface, At least one of the aforementioned furring strips includes an insulating furring strip. The aforementioned insulating furring strip includes a composite material in which a first portion made of wood material and a second portion made of an insulating material having a higher thermal resistance than the wood material are superimposed in the panel thickness direction. Exterior wall panels. [2nd Invention] The exterior wall panel according to the present invention 1, wherein the thermal insulation material includes phenolic foam. [Invention 3] The exterior wall panel according to the present invention 1 or 2, wherein the first portion is positioned closer to the exterior material than the second portion. [4th Invention] The aforementioned frame includes vertical frame members extending vertically, The aforementioned insulating furring strips are fixed to the aforementioned vertical frame members. The exterior wall panel according to any one of inventions 1 to 3, wherein the horizontal width of the insulating furring strip is equal to or greater than the horizontal width of the vertical frame material. [5th ​​Invention] The frame includes a first vertical frame member that constitutes the outer periphery of the frame and a second vertical frame member that extends further inward from the outer periphery. At least one of the aforementioned furring strips includes a termite-resistant furring strip equipped with termite-resistant properties, The exterior wall panel according to any one of inventions 1 to 4, wherein the termite-resistant furring strip is fixed to the first vertical frame member. [Invention 6] The exterior wall panel according to the present invention, wherein the termite-resistant furring strip is formed by impregnating a wood material with a termite-resistant chemical solution. [7th Invention] The exterior wall panel according to claim 5 or 6 of the present invention, wherein the insulating furring strips are fixed to the second vertical frame material. [8th Invention] The interior material is further fixed to the side that forms the inner wall surface of the frame, The total thermal resistance of the aforementioned insulating furring strips and the aforementioned interior material is 1.7 m 2 An exterior wall panel according to any one of claims 1 to 7 of the present invention, having a power of kW or more. [Invention 9] A building comprising an exterior wall panel according to any one of inventions 1 to 8. [Explanation of Symbols]

[0057] 1. Exterior wall panels 2 frame frame 3. Furring strips 4. Exterior materials 14 Part 1 15 Part 2 16 Wood materials 17. Insulation materials 18 Composite materials

Claims

1. It is an exterior wall panel for a building, A rectangular metal frame, Multiple furring strips are fixed to the side of the frame that will become the outer wall surface, Includes exterior material that is fixed to the furring strip and constitutes the exterior wall surface, The frame includes a first vertical frame member that constitutes the outer periphery of the frame and a second vertical frame member that extends further inward from the outer periphery. At least one of the furring strips includes an insulating furring strip and an anti-termite furring strip with anti-termite properties, The aforementioned insulating furring strip includes a composite material in which a first portion made of wood material and a second portion made of an insulating material having a higher thermal resistance than the wood material are superimposed in the panel thickness direction. The termite-resistant furring strip is fixed to the first vertical frame member. Exterior wall panels.

2. The exterior wall panel according to claim 1, wherein the thermal insulation material includes phenolic foam.

3. The exterior wall panel according to claim 1, wherein the first portion is positioned closer to the exterior material than the second portion.

4. The aforementioned frame includes vertical frame members extending vertically, The aforementioned insulating furring strips are fixed to the aforementioned vertical frame members. The exterior wall panel according to claim 1, wherein the horizontal width of the insulating furring strip is equal to or greater than the horizontal width of the vertical frame material.

5. The exterior wall panel according to claim 1, wherein the termite-resistant furring strips are formed by impregnating a wood material with a termite-resistant chemical solution.

6. The exterior wall panel according to claim 1, wherein the insulating furring strip is fixed to the second vertical frame member.

7. An exterior wall panel for a building, A rectangular metal frame, Multiple furring strips are fixed to the side of the frame that will become the outer wall surface, The exterior material fixed to the furring strip and constituting the exterior wall surface, This includes interior material fixed to the side that forms the inner wall surface of the frame, At least one of the aforementioned furring strips includes an insulating furring strip. The aforementioned insulating furring strip includes a composite material in which a first portion made of wood material and a second portion made of an insulating material having a higher thermal resistance than the wood material are superimposed in the panel thickness direction. The combined thermal resistance of the aforementioned insulating furring strips and the aforementioned interior material is 1.7 m²·K / W or more. Exterior wall panels.

8. A building comprising the exterior wall panel according to any one of claims 1 to 7.

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