Thermal insulation structure and thermal insulation method

Abstract

A ceiling insulation structure with thermal insulation and moisture-proofing properties spanning multiple units is formed above the beam without protruding. [Solution] The thermal insulation structure is formed in a rectangular parallelepiped shape by a column-beam frame and comprises a plurality of building units 10 in which beams 14 are arranged facing each other, ceiling insulation material 20 and ceiling moisture-proof film 22 arranged above the ceiling material 50 of each building unit 10, connecting insulation material 30 arranged sandwiched between opposing beams 14, base material 40 fixed to the lower surface of each opposing beam 14, connecting moisture-proof film 32 arranged sandwiched between at least one of the opposing beams 14 and the base material 40 and stretched between the opposing beams 14, and connecting ceiling material 52 stretched and fixed across each base material 40.

Description

Technical Field

[0001] The present invention relates to a heat insulation structure and a heat insulation method.

Background Art

[0002] Patent Document 1 below shows a heat insulation structure of the attic of a building formed by arranging units. In this heat insulation structure, a moisture-proof film and a heat insulating material are laid so as to cover the ceiling girders of the units arranged opposite to each other.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] As shown in Patent Document 1 above, by using a moisture-proof film and a heat insulating material, heat loss from the living room can be suppressed, and it is also possible to suppress the moisture in the living room space from entering the ceiling and causing condensation in the ceiling. On the other hand, the moisture-proof film and the heat insulating material are laid so as to cover the ceiling girder. Therefore, in order to ensure the heat insulation performance, the height dimension is large, and it may be difficult to apply it to a flat roof or the like where the attic space cannot be sufficiently secured.

[0005] In consideration of the above facts, the present disclosure forms a ceiling heat insulation structure having heat insulation performance and moisture-proof performance across a plurality of units without protruding above the beam.

Means for Solving the Problems

[0006] The first embodiment of the thermal insulation structure comprises a plurality of building units formed in a rectangular parallelepiped shape by a column-beam frame, with beams arranged facing each other; ceiling insulation material and ceiling moisture-proof film arranged above the ceiling material of each building unit; connecting insulation material arranged between opposing beams; base materials fixed to the lower surfaces of opposing beams; connecting moisture-proof film arranged between at least one of the opposing beams and the base material and stretched between the opposing beams; and connecting ceiling materials stretched and fixed across each of the base materials.

[0007] In the first embodiment of the thermal insulation structure, the ceiling insulation material can suppress heat loss from the indoor space formed inside the building unit through the ceiling. In addition, the ceiling vapor barrier film can suppress moisture from the indoor space from entering the ceiling and causing condensation within the ceiling.

[0008] Furthermore, connected insulation material is placed between opposing beams, and connected moisture-proof film is stretched across the opposing beams. This ensures that insulation and moisture-proof performance are also achieved between building units.

[0009] Furthermore, since the connecting insulation material is sandwiched between opposing beams, a ceiling insulation structure with insulation and moisture-proofing properties spanning multiple units can be formed without protruding above the beams.

[0010] Furthermore, since the connecting moisture-proof film is sandwiched and fixed between the beam and the substrate, the connecting ceiling material is less likely to shift compared to a configuration where it is sandwiched between the substrate and the connecting ceiling material. This suppresses cracking and twisting of the finishing material caused by the shifting of the connecting ceiling material.

[0011] The second embodiment of the thermal insulation structure is such that, in the thermal insulation structure of the first embodiment, one end of the connecting moisture-proof film is sandwiched between one of the opposing beams and the base material, and the other end is sandwiched between the other of the opposing beams and the connecting thermal insulation material.

[0012] In the second embodiment of the insulation structure, both ends of the connecting moisture-proof film are held in place, so it does not sag when installing the connecting ceiling material, making it easier to install the connecting ceiling material.

[0013] The third embodiment of the insulation method comprises the steps of: fixing a base material to the lower surface of the beams of a building unit formed in a rectangular parallelepiped shape by a column-beam frame, sandwiching a connecting moisture-proof film between them; arranging other building units adjacent to the building unit so that their beams face each other; arranging ceiling insulation material and ceiling moisture-proof film above the ceiling material of each of the building units; arranging a connecting insulation material sandwiched between the beams of the opposing building units; stretching the connecting moisture-proof film attached to one of the building units between the opposing beams; and stretching and fixing the connecting ceiling material across the base material of each of the building units.

[0014] In the third embodiment of the insulation method, the ceiling insulation material can suppress heat loss from the indoor space formed inside the building unit through the ceiling. In addition, the ceiling vapor barrier film can suppress moisture from the indoor space from entering the ceiling and causing condensation within the ceiling.

[0015] Furthermore, connected insulation material is placed between opposing beams, and connected moisture-proof film is stretched across the opposing beams. This ensures that insulation and moisture-proof performance are also achieved between building units.

[0016] Furthermore, since the connecting insulation material is placed between opposing beams, a ceiling insulation structure with insulation and moisture-proofing properties spanning multiple units is formed without protruding above the beams.

[0017] Furthermore, since the connecting moisture-proof film is fixed by being sandwiched between the beam and the substrate material, the connecting ceiling material is less likely to shift compared to a method where it is sandwiched between the substrate material and the connecting ceiling material. This suppresses cracking and twisting of the finishing material caused by the shifting of the connecting ceiling material. [Effects of the Invention]

[0018] According to the present invention, a ceiling heat insulation structure having heat insulation performance and moisture-proof performance across a plurality of units can be formed without protruding above the beam.

Brief Description of the Drawings

[0019] [Figure 1] It is a perspective view showing an overview of a building unit to which the heat insulation structure and heat insulation method according to an embodiment of the present disclosure are applied. [Figure 2] (A) is a cross-sectional view showing a state where a connecting moisture-proof film is fixed to a beam, (B) is a cross-sectional view showing a state where a ceiling heat insulating material and a ceiling moisture-proof film are laid on a building unit, (C) is a cross-sectional view showing a state where a connecting heat insulating material is arranged between opposing beams and the connecting moisture-proof film is spanned, and (D) is a cross-sectional view taken along line D-D of FIG. 1 showing the heat insulation structure according to an embodiment of the present disclosure. [Figure 3] It is a cross-sectional view showing a heat insulation structure according to a comparative example. [Figure 4] (A) is a cross-sectional view showing a state where a connecting moisture-proof film is fixed to each of opposing beams, (B) is a cross-sectional view showing a state where a connecting heat insulating material is arranged between opposing beams and the connecting moisture-proof film is spanned, and (C) is a cross-sectional view showing a heat insulation structure according to a modified example.

Mode for Carrying Out the Invention

[0020] Hereinafter, the heat insulation structure and heat insulation method according to an embodiment of the present disclosure will be described with reference to the drawings. Components denoted by the same reference numerals in each drawing mean the same components. However, unless otherwise specified in the specification, each component is not limited to one, and a plurality of them may exist.

[0021] Also, the description of overlapping configurations and reference numerals in each drawing may be omitted. Note that the present disclosure is not limited to the following embodiments, and can be implemented with appropriate modifications such as omitting configurations, replacing with different configurations, and combining one embodiment and various modified examples within the scope of the object of the present disclosure.

[0022] <Building unit> As shown in Fig. 1, a building unit 10 to which the heat insulation structure and the heat insulation method according to the embodiments of the present disclosure are applied is shown. The building unit 10 is a column-beam structure formed in a rectangular parallelepiped shape using steel columns 12 and beams 14 spanned across the columns 12. By connecting the building units 10 in the horizontal and vertical directions, the skeleton of the building is formed.

[0023] As shown in this figure, two adjacent building units 10 are arranged such that their beams 14 face each other with a gap therebetween. These building units 10 form the top floor of the building. Also, the roof arranged above these building units 10 is a flat roof (ground roof) and is supported by the columns 12 and the beams 14.

[0024] As will be described later, heat insulating materials are laid in the ceilings of two adjacent building units 10 respectively. Also, as will be described later, heat insulating materials are laid between the beams 14 of the two building units 10.

[0025] And in the heat insulation structure of the present disclosure, the heat insulation structure "inside the ceiling" of two adjacent building units 10 and the heat insulation structure "between the beams 14" of these two building units 10 are continuously formed.

[0026] (Arrangement of beams) As shown in Fig. 2, the beam 14 is formed using channel steel or light channel steel. The beam 14 is a steel material having a substantially C-shaped cross section in which flanges 14B project in one direction from both ends in the width direction of a long flat base (web 14A).

[0027] Between the building units 10 arranged adjacent to each other, the surfaces of the web 14A of the beam 14 on the side opposite to the flange 14B are arranged to face each other with a predetermined interval therebetween.

[0028] Note that the beam 14 is not limited to channel steel, and H-shaped steel or the like may be used. Also, secondary beams (not shown) may be placed between the beams 14 arranged in parallel in each building unit 10. The secondary beams have a lower beam depth than the beam 14 and are preferably placed on the lower part of the beam 14 so that the base material 40, which will be described later, can be fixed to them.

[0029] <Thermal insulation structure> As shown in Figure 2(D), the thermal insulation structure of this disclosure comprises a ceiling insulation material 20, a ceiling moisture-proof film 22, a connecting insulation material 30, and a connecting moisture-proof film 32. Furthermore, this thermal insulation structure comprises a base material 40, a ceiling material 50, and a connecting ceiling material 52.

[0030] (Underlayment) The base material 40 is a purlin fixed to the lower flange 14B of the beam 14. In addition to the beam 14, the base material 40 is also fixed to secondary beams (not shown) that span across the beam 14. The base material 40 can be formed using lightweight steel or wood.

[0031] The base material 40 has the ceiling material 50 or the connecting ceiling material 52 fixed to it from below. Of these, the base material 40 fixed to the beam 14 has the ceiling material 50 and the connecting ceiling material 52 fixed to it from below.

[0032] (Ceiling materials, connecting ceiling materials) The ceiling material 50 is the ceiling material for each building unit 10. The connecting ceiling material 52 is a ceiling material that spans between the beams 14 of adjacent building units 10. The ceiling material 50 and the connecting ceiling material 52 are formed, for example, from gypsum board of equal thickness. The undersides of the ceiling material 50 and the connecting ceiling material 52 are flush.

[0033] The joints between the ceiling material 50 and the connecting ceiling material 52 are smoothed by applying putty or the like, and the undersides of the ceiling material 50 and the connecting ceiling material 52 are finished with a decorative surface by laying down a wallpaper or the like (not shown).

[0034] (Ceiling insulation, ceiling moisture-proof film) The ceiling insulation material 20 and the ceiling moisture-proof film 22 are placed inside the ceiling of each building unit 10 (above the ceiling material 50) to insulate the interior of the building unit 10 and prevent moisture from entering the ceiling.

[0035] Specifically, the ceiling insulation material 20 is laid across the beams 14 of each building unit 10. The ends of the ceiling insulation material 20 are positioned between the flanges 14B of the beams 14.

[0036] The ceiling insulation material 20 is formed into a compressible mat by filling a bag of a predetermined size with a fibrous insulation material. As the fibrous insulation material for the ceiling insulation material 20, inorganic fibrous insulation materials such as glass wool and rock wool may be used, or other fibrous insulation materials such as wood fiber insulation materials may be used. Multiple sheets of ceiling insulation material 20 may be laid overlapping each other.

[0037] Furthermore, the ceiling moisture barrier film 22 is positioned in contact with the underside of the ceiling insulation material 20. For this reason, the end of the ceiling moisture barrier film 22 is positioned between the flanges 14B of the beam 14, similar to the end of the ceiling insulation material 20. In addition, the end of the ceiling moisture barrier film 22 is positioned sandwiched between the end of the ceiling insulation material 20 and the flange 14B of the beam 14.

[0038] The ceiling moisture-proof film 22 is attached to the bag-shaped ceiling insulation material 20. Alternatively, the ceiling moisture-proof film 22 may constitute a part of the bag-shaped ceiling insulation material 20. Polyethylene film or the like can be used as the ceiling moisture-proof film 22.

[0039] It is preferable that the ceiling insulation material 20 and the ceiling moisture-proof film 22 be laid without gaps above the ceiling material 50. "Without gaps" includes both laying them without gaps between joists (not shown) and laying them across the joists. Alternatively, if the joists are spanning the top of the beam 14, it also includes laying them without gaps below the joists.

[0040] (Connected insulation material, connected moisture-proof film) The connected insulation material 30 and the connected moisture-proof film 32 are placed between adjacent building units 10 to insulate the interior space formed by the connected building units 10 and to prevent moisture from entering the ceiling space.

[0041] Specifically, the connecting insulation material 30 is positioned sandwiched between opposing beams 14 (beams 14 of each adjacent building unit 10). In addition, the connecting insulation material 30 is positioned in contact with the web 14A of each beam 14.

[0042] The connected moisture-proof film 32 has one end sandwiched between one of the opposing beams 14 and the base material 40. The other end of the connected moisture-proof film 32 is folded upward and sandwiched between the other of the opposing beams 14 and the connecting insulation material 30. In this way, the connected moisture-proof film 32 is stretched across the opposing beams 14.

[0043] Thus, the "connecting moisture-proof film positioned between at least one of the opposing beams and the base material, and stretched between the opposing beams" in this disclosure includes, as shown in Figure 2, "a connecting moisture-proof film positioned with one end positioned between one of the opposing beams 14 and the base material 40, and stretched across the other beam."

[0044] The materials used to form the connected insulation material 30 and the connected moisture-proof film 32 are the same as those used for the ceiling insulation material 20 and the ceiling moisture-proof film 22, and therefore their explanation is omitted.

[0045] <Insulation Methods> To form the thermal insulation structure of the above embodiment, first, as shown in Figure 2(A), the base material 40 is fixed to the lower surface of the beam 14 of the building unit 10 (the lower surface of the lower flange 14B) by sandwiching the end of the connecting moisture-proof film 32. This fixes the connecting moisture-proof film 32 to the beam 14.

[0046] Next, as shown in Figure 2(B), another building unit 10 is placed adjacent to the building unit 10 to which the connecting moisture-proof film 32 is fixed, so that the webs 14A of the beams 14 of each unit face each other.

[0047] Then, the ceiling material 50 is fixed to the base material 40 of each building unit 10. In addition, ceiling insulation material 20 and ceiling moisture barrier film 22 are laid above the ceiling material 50.

[0048] Next, as shown in Figure 2(C), the connecting insulation material 30 is placed between the beams 14 of the opposing building units 10. Then, the connecting moisture-proof film 32 attached to one building unit 10 is stretched across the beam 14 of the other building unit 10.

[0049] At this time, the end of the connecting moisture-proof film 32 is sandwiched between the beam 14 and the connecting insulation material 30. In this state, it is preferable that the connecting insulation material 30 be placed in a compressed state between the beams 14 of the opposing building units 10 so that the connecting moisture-proof film 32 is held in place.

[0050] Next, as shown in Figure 2(D), the connecting ceiling material 52 is stretched across and fixed to the base material 40 of each building unit 10.

[0051] <Mechanism and Effects> According to the thermal insulation structure and thermal insulation method of this disclosure, the ceiling insulation material 20 can suppress heat loss from the indoor space formed inside the building unit 10 through the ceiling. In addition, the ceiling moisture-proof film 22 can suppress moisture from the indoor space from entering the ceiling and causing condensation.

[0052] Furthermore, the connected insulation material 30 is placed between opposing beams 14, and the connected moisture-proof film 32 is stretched across the opposing beams 14. As a result, insulation and moisture-proof performance can be obtained between the building units 10.

[0053] Furthermore, since the connecting insulation material 30 is positioned between opposing beams 14, a ceiling insulation structure with thermal insulation and moisture-proofing properties spanning multiple building units 10 can be formed without protruding above the beams 14.

[0054] Furthermore, since the connecting moisture-proof film 32 is sandwiched and fixed between the beam 14 and the base material 40, the connecting ceiling material 52 is less likely to shift compared to the configuration in which the connecting moisture-proof film 32 is sandwiched between the base material 40 and the connecting ceiling material 52, as shown in the "Comparative Example" in Figure 3. This suppresses cracking and twisting of the finishing material caused by the shifting of the connecting ceiling material 52.

[0055] Furthermore, according to the thermal insulation structure and thermal insulation method of this disclosure, one end of the connecting moisture-proof film 32 is sandwiched between the beam 14 and the base material 40, and the other end is sandwiched between the other beam 14 and the connecting thermal insulation material 30.

[0056] As shown in Figure 2(C), since both ends of the connecting moisture-proof film 32 are held in place, it does not sag when installing the connecting ceiling material 52, making it easier to install the connecting ceiling material 52.

[0057] <Other Embodiments> In the above embodiment, a set of connected moisture-proof films 32 is spanned from one opposing beam 14 to the other; however, the embodiments of this disclosure are not limited to this.

[0058] For example, as shown in Figure 4(A), two sets of connecting moisture-proof films 32 may be used. In this case, one end of each connecting moisture-proof film 32 is sandwiched between the opposing beams 14 and the base material 40.

[0059] Then, as shown in Figure 4(B), the other ends of each connecting moisture-proof film 32 are overlapped below the connecting insulation material 30. At this time, the other ends of the connecting moisture-proof films 32 may or may not be bonded together.

[0060] Furthermore, as shown in Figure 4(C), the connecting ceiling material 52 is fixed to the base material 40 so as to cover the overlapping portion of the connecting moisture-proof film 32. In this way, the two sets of connecting moisture-proof films 32 are connected, forming a connecting moisture-proof film 32A that spans from one opposing beam 14 to the other.

[0061] Thus, the "connecting moisture-proof film positioned between at least one of the opposing beams and the base material, and stretched between the opposing beams" in this disclosure includes, as shown in Figure 4, "a connecting moisture-proof film 32A positioned between each of the beams 14, which are opposed at both ends, and the base material 40, and stretched between the opposing beams 14."

[0062] Furthermore, as described above, in the above embodiment, the connecting insulation material 30 is sandwiched between opposing beams 14, so that an insulation structure with both insulation and moisture-proof properties can be formed without protruding from the beams 14.

[0063] However, this disclosure does not require that the insulation structure "not protrude above the beam 14". For example, if the roof above the building unit 10 is not a flat roof and sufficient ceiling space can be secured, additional insulation material may be laid on top of the insulation structure of this disclosure.

[0064] Furthermore, in the above embodiment, as shown in Figure 1, the thermal insulation structure between beams 14 along the longitudinal direction (girder direction) of the building unit 10 was described, but the embodiments of this disclosure are not limited to this. In other words, multiple building units 10 can be arranged so that beams 14 along the short direction (gable direction) face each other, and the same configuration as the present invention can be applied between these beams 14 along the short direction (gable direction). Thus, the present invention can be implemented in various forms. [Explanation of symbols]

[0065] 10 building units 14 Beam 20 Ceiling insulation 22 Ceiling moisture-proof film 30 Linked insulation material 32 Interlocking moisture-proof film 32A Interlocking moisture-proof film 40. Underlayment 50 Ceiling materials 52 Connecting ceiling material

Claims

1. Multiple building units are formed in a rectangular parallelepiped shape by a column-beam frame, with beams arranged facing each other. Ceiling insulation material and ceiling moisture-proof film are placed above the ceiling material of each of the aforementioned building units, A connecting insulation material is placed between the opposing beams, A base material fixed to the lower surface of each of the opposing beams, A connecting moisture-proof film is positioned between at least one of the opposing beams and the base material, and is stretched between the opposing beams. Each of the aforementioned base materials is spanned and fixed to the connecting ceiling material, An insulated structure equipped with this feature.

2. One end of the connecting moisture-proof film is positioned between one of the opposing beams and the base material, and the other end is positioned between the other of the opposing beams and the connecting insulation material. The thermal insulation structure according to claim 1.

3. The process involves fixing a base material to the underside of the beams of a building unit formed into a rectangular parallelepiped shape by a column-beam frame, with a connecting moisture-proof film sandwiched in between. The process of arranging other building units adjacent to the aforementioned building unit, such that their beams face each other, The process involves placing ceiling insulation material and ceiling moisture-proof film above the ceiling material of each of the aforementioned building units, The process of placing a connecting insulation material between the beams of the opposing building units, The process of stretching the connecting moisture-proof film attached to one of the building units across the opposing beams, The process involves bridging and fixing the connecting ceiling material to the base material of each of the aforementioned building units, An insulation method that includes [the necessary equipment / features].

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