Double insulation structure for houses

Abstract

This invention provides a double-insulated structure for houses that enhances insulation performance by using both internal insulation (cavity insulation) and external insulation (external cladding insulation). [Solution] The double insulation structure for a house according to the present invention is characterized by the use of both an exterior insulation method, in which phenol foam 1, a foamed plastic insulation material, is applied to the outside of the frame, and an interior insulation method, in which urethane foam 2, a foamed plastic insulation material, is sprayed on-site to the inside of the frame, and in the interior insulation method, phenol foam and urethane foam, both foamed plastic insulation materials, are used in combination.

Description

Technical Field

[0001] The present invention relates to a housing structure with enhanced heat insulation by combining internal insulation (filled insulation) and external insulation (exterior insulation).

Background Art

[0002] Conventionally, internal insulation methods and external insulation methods are known as heat insulation methods for wooden houses. The internal insulation method is a method of applying a heat insulating material between columns, walls, etc. of a structural frame, and the external insulation method is a method of applying a heat insulating material outside the structural frame.

[0003] Mainly, fiber-based heat insulating materials and foamed plastic-based heat insulating materials are used as the heat insulating materials. For fiber-based heat insulating materials, rock wool, glass wool, cellulose fiber, etc. are used. Also, for foamed plastic-based heat insulating materials, polystyrene foam, urethane foam, polyethylene foam, phenol foam, etc. are used. These heat insulating materials are used appropriately to complement the respective purposes and weaknesses of the internal insulation method and the external insulation method.

[0004] For example, in the internal insulation method, since there is a heat insulating layer inside, the volume inside the heat insulating layer is small and it is easy to warm up and cool down. However, when using a fiber-based heat insulating material, because the heat capacity is small, it is easily affected by the outside air. Also, since the airtightness is low and moisture easily passes through, when the temperature difference from the outside air is large, internal condensation easily occurs Also, in the external insulation method, when using a foamed plastic-based heat insulating material, since the airtightness is high and moisture hardly passes through, even when the temperature difference from the outside air is large, internal condensation hardly occurs. However, because the airtightness is high, the ventilation is poor, and when continuously stretching to the foundation, the interior is easily affected by anti-corrosion and anti-termite agents.

[0005] Furthermore, as a method that combines internal and external insulation methods, Patent Document 1 discloses a housing structure in which an air layer is provided between the insulation materials to mitigate the temperature difference between the outside and inside air, preventing internal condensation through ventilation, and eliminating air pollution that may occur due to increased airtightness through a total heat exchange ventilation system.

[0006] Specifically, external insulation is achieved by attaching foamed polyurethane or similar insulation material to the outside of the building structure. When finishing the exterior walls and roof, furring strips are installed as a base to create a unified ventilation layer that runs from the foundation to the ridge. Then, fibrous insulation material such as rock wool or glass wool is installed on the inside of the building structure to enclose the rooms and provide internal insulation. The insulation is installed so that there is a space between the external and internal insulation materials, creating an air layer between the outside and inside air. This method enables the creation of a house with high insulation performance. Furthermore, the inclusion of an air layer and ventilation system prevents internal condensation, which is a disadvantage, and allows the interior to maintain a suitable environment for human health throughout the year. [Prior art documents] [Patent Documents]

[0007] [Patent Document 1] Japanese Patent Publication No. 2005-083142 [Overview of the project] [Problems that the invention aims to solve]

[0008] However, the invention described in Patent Document 1 uses fibrous insulation material on the inside of the building structure, which makes it prone to internal condensation when there is a large temperature difference with the outside air. Even if a space is created between the exterior and interior insulation materials during construction to create an air layer between the outside and inside air, a ventilation system is required, which increases construction costs and labor.

[0009] Therefore, in order to solve the above problems, this invention provides a housing structure with even higher insulation performance than before by using only foamed plastic insulation materials instead of fiber-based insulation materials, and by combining an internal insulation method using cavity insulation and an external insulation method using exterior insulation, and further by using multiple foamed plastic insulation materials in combination in the internal insulation method. [Means for solving the problem]

[0010] This invention addresses the above-mentioned problems in the prior art by employing the following technical solutions.

[0011] The double insulation structure for a house according to this invention is The exterior insulation method involves applying phenol foam, a foamed plastic insulation material, to the outside of the building structure. The interior insulation method involves spraying polyurethane foam, a foamed plastic insulation material, onto the inside of the building structure on-site. In a double-insulated structure of a house where both are used, In the construction method using the aforementioned internal filling insulation method, Phenolic foam, a foamed plastic insulation material, Polyurethane foam, a type of foamed plastic insulation, is used in combination. It is characterized by the following:

[0012] In the double insulation structure of a house that uses both exterior insulation and interior insulation methods, the use of phenolic foam in combination with polyurethane foam provides a house structure with higher insulation performance compared to houses that use only polyurethane foam spraying for interior insulation.

[0013] The double insulation structure for a house according to this invention is The exterior insulation method involves applying phenol foam, a foamed plastic insulation material, to the outside of the building structure. The interior insulation method involves spraying polyurethane foam, a foamed plastic insulation material, onto the inside of the building structure on-site. A double-insulation structure for a house in which they are used in combination, In the construction by the above-mentioned inner filling insulation method, In the field area, Between the floor slab and Urethane foam, which is a foam plastic insulation material, there is Phenol foam, which is a foam plastic insulation material, intervening It is characterized by this.

[0014] In the double-insulation structure of a house in which the external pasting insulation method and the inner filling insulation method are used in combination, particularly in the inner filling insulation method applied to the field area, By interposing phenol foam, which is a foam plastic insulation material, between the floor slab and urethane foam, which is a foam plastic insulation material, a house structure with high insulation performance can be provided as compared with the case where only urethane foam is foamed and sprayed.

[0015] The double-insulation structure of the house according to the present invention is An external pasting insulation method of pasting phenol foam, which is a foam plastic insulation material, on the outside of the building frame, and An inner filling insulation method of foaming and spraying urethane foam, which is a foam plastic insulation material, on the inside of the building frame on-site, and A double-insulation structure for a house in which they are used in combination, In the construction by the above-mentioned inner filling insulation method, In the field area, On the floor slab, After phenol foam, which is a foam plastic insulation material, is pasted, Urethane foam, which is a foam plastic insulation material, is sprayed, In the wall area, Phenol foam, which is a foam plastic insulation material, is pasted, After interposing the shear wall material, Urethane foam, which is a foam plastic insulation material, is sprayed, The polyurethane foam sprayed on the inside of the load-bearing wall material is connected to the polyurethane foam sprayed on the inside of the roof sheathing. It is characterized by the following:

[0016] In the interior insulation method, where polyurethane foam, a type of foamed plastic insulation, is sprayed onto the inside of the building structure on-site, the polyurethane foam sprayed onto the inside of the structure can also be sprayed onto the inside of the roof sheathing. As a result, the polyurethane foam sprayed on the inside of the load-bearing wall material connects with the polyurethane foam sprayed on the inside of the roof sheathing, and the polyurethane foam sprayed on the load-bearing wall material is sprayed on the inside of all structural elements except windows, making it possible to achieve a house structure with high thermal insulation performance. [Effects of the Invention]

[0017] According to this invention, it is possible to construct a house structure with higher insulation performance than ever before in a short construction period while keeping construction costs low. Furthermore, it is possible to provide a house with a double-insulated structure that is less prone to internal condensation even when there is a large temperature difference with the outside air, and does not require a total heat exchange type ventilation system. [Brief explanation of the drawing]

[0018] [Figure 1] Cross-sectional view of the wall section of a house with a double-insulated structure. [Modes for carrying out the invention]

[0019] The specific implementation methods of this invention will be described in more detail below, based on the drawings. The following embodiments are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0020] After the foundation work is completed, the structural frame of the house is erected. Load-bearing wall panels are attached to the structural frame of the house.

[0021] Next, we will explain the construction method using the exterior insulation method. From the outside of the building structure, phenolic foam is applied to the load-bearing wall material as insulation using an external insulation method. Joint tape is applied to the seams of the phenolic foam to eliminate any gaps between them. A breathable waterproof sheet is applied to the outside of the phenolic foam to prevent water from seeping into the building. Furthermore, the base material and vertical furring strips for attaching the exterior walls are installed. Finally, the exterior wall material is attached and the exterior walls are painted.

[0022] Next, we will explain the construction method using the internal filling insulation method. (1) The underside of the roofing is On the roof sheathing, Phenolic foam, a foamed plastic insulation material, is attached, The process involves spraying polyurethane foam, a type of foamed plastic insulation material. (2) The wall portion is Phenolic foam, a foamed plastic insulation material, is attached. With load-bearing wall material interposed, The process involves spraying polyurethane foam, a type of foamed plastic insulation material. (3) In addition, the polyurethane foam sprayed on the inside of the roof sheathing can be sprayed in a manner that is continuous with the polyurethane foam sprayed on the inside of the load-bearing wall material. This means that polyurethane foam is sprayed onto the inside of all structural elements except the windows, resulting in a house structure with high thermal insulation performance. (4) As described in (1) and (2) above, by applying phenol foam and then spraying polyurethane foam, the average thermal transmittance Ua value of the building envelope is reduced to 0.32 (W / m²) compared to the case where polyurethane foam is sprayed without applying phenol foam. 2 ·K) to 0.20 (W / m 2 We were able to improve it to K. (5) For load-bearing wall materials other than roof sheathing, gypsum board interior wall material is attached over the polyurethane foam after it has been sprayed. (6) Finally, attach the wall coverings and decorative materials.

[0023] The above construction method allows for the construction of a house structure with higher insulation performance than ever before, while keeping construction costs low and completing the work in a short period of time. Furthermore, it enables the provision of a house with a double-insulated structure that is less prone to internal condensation even when there is a large temperature difference with the outside air. [Explanation of Symbols]

[0024] 1 phenolic foam 2. Urethane foam

Claims

1. The exterior insulation method involves applying phenol foam, a foamed plastic insulation material, to the outside of the building structure. The interior insulation method involves spraying polyurethane foam, a foamed plastic insulation material, onto the inside of the building structure on-site. In a double-insulated structure of a house where both are used, In the construction method using the aforementioned internal filling insulation method, Phenolic foam, a foamed plastic insulation material, Polyurethane foam, a type of foamed plastic insulation, is used in combination. A double-insulated structure for houses, characterized by its unique features.

2. The exterior insulation method involves applying phenol foam, a foamed plastic insulation material, to the outside of the building structure. The interior insulation method involves spraying polyurethane foam, a foamed plastic insulation material, onto the inside of the building structure on-site. In a double-insulated structure of a house where both are used, In the construction method using the aforementioned internal filling insulation method, In the underside of the roof, Roof sheathing and, A layer of phenolic foam, another foamed plastic insulation material, is interposed between the polyurethane foam, another foamed plastic insulation material, and the polyurethane foam. A double-insulated structure for houses, characterized by its unique features.

3. The exterior insulation method involves applying phenol foam, a foamed plastic insulation material, to the outside of the building structure. The interior insulation method involves spraying polyurethane foam, a foamed plastic insulation material, onto the inside of the building structure on-site. In a double-insulated structure of a house where both are used, In the construction method using the aforementioned internal filling insulation method, In the underside of the roof, On the roof sheathing, Phenolic foam, a foamed plastic insulation material, is attached, It is coated with sprayed polyurethane foam, which is a foamed plastic insulation material. In the wall section, Phenolic foam, a foamed plastic insulation material, is attached. With load-bearing wall material interposed, It is coated with sprayed polyurethane foam, which is a foamed plastic insulation material. The polyurethane foam sprayed on the inside of the load-bearing wall material is connected to the polyurethane foam sprayed on the inside of the roof sheathing. A double-insulated structure for houses, characterized by its unique features.

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