JP2014037731A - Insulation structure for building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an insulation structure for a building providing an excellent heat insulation effect.SOLUTION: An insulation structure for a building H has a double wall structure where an inner exterior material 1 is disposed on the outside of a building frame of the building H, and an outer exterior material 2 is disposed on the outside of the inner exterior material 1 through an air layer W. Heat-blocking coating 3 is applied to at least one of the outer and inner surfaces of the inner exterior material 1, and the outer and inner surfaces of the outer exterior material 2.

Description

  The present invention relates to a heat insulating structure of a building.

  For example, Patent Document 1 proposes a ventilation structure building in which an exterior heat insulating material is provided with a gap between the outer wall and the inner surface side of the roof, and the gap between the outer wall and the roof is a ventilation layer. In this ventilated structure building, by connecting the underfloor space and the vent layer, air permeability is improved by the air flowing through the vent layer, and by transmitting geothermal and cold air from under the floor, in the interior space of the building, It is said that it can keep a warm environment in winter and a cool environment in summer.

JP-A-8-135037

  However, the heat insulation effect by the ventilation layer such as the ventilation structure building of Patent Document 1 is not always sufficient, and especially on a hot day, the external heat reaches the internal space of the building and raises the room temperature. There is a case. In such a case, the room temperature is generally lowered by lowering the set temperature of the cooling or the like, but an increase in power consumption is inevitable, and it is difficult to realize energy saving and power saving.

  This invention is made | formed in view of the above situations, and has the subject of providing the heat insulation structure of the building which has the outstanding heat insulation effect and has a high energy-saving and power-saving effect.

  In order to solve the above problems, in the heat insulating structure for a building according to the present invention, an inner exterior material is disposed outside the building housing, and an outer exterior material is disposed outside the inner exterior material via an air layer. A heat insulating paint is applied to at least one of the outer surface and the inner surface of the inner exterior material and the outer surface and the inner surface of the outer exterior material. It is characterized by being.

  In the heat insulating structure of this building, it is preferable that a vent hole communicating with the air layer is provided in the outer exterior material.

  In the heat insulating structure of this building, a heat insulating member is sandwiched between the inner outer covering material and the outer outer covering material, and this heat insulating member causes the air layer between the inner outer covering material and the outer outer covering material to be in the vertical direction and / or It is more preferable that the plurality of compartments are formed by being divided in the lateral direction and that the air flow between adjacent compartments is blocked.

  In the heat insulating structure of the building, the heat insulating member is more preferably formed in a lattice shape in which the vertical division portion and the horizontal division portion intersect.

  The building of the present invention is characterized by having the above-described heat insulating structure.

  The heat insulating structure of a building of the present invention has an excellent heat shielding effect, has high energy saving and power saving effect, and can maintain the temperature of the internal space of the building at a comfortable temperature.

It is the schematic which illustrated one Embodiment of the heat insulation structure of the building of this invention. It is a longitudinal cross-sectional view which illustrates a part of inner exterior material and outer exterior material in the heat insulation structure of the building of this invention. It is the perspective view which illustrated one Embodiment of the heat insulation member used for the heat insulation structure of the building of this invention. FIG. 4 is an internal perspective view from the outer exterior material (outer wall) side illustrating a state in which a plurality of heat insulating members illustrated in FIG. 3 are disposed between the inner exterior material and the outer exterior material (air layer).

  FIG. 1 is a schematic view illustrating an embodiment of a heat insulating structure for a building according to the present invention. FIG. 2 is a longitudinal sectional view illustrating a part of the inner exterior material and the outer exterior material in the heat insulating structure of a building of the present invention.

  The building H is constructed on a foundation laid on the ground, and an inner exterior material 1 is disposed on the outer side of a frame composed of beams, columns, and the like. The outer packaging material 2 is disposed through the air layer W. That is, the building H has a double wall structure in which the inner exterior material 1 and the outer exterior material 2 are disposed to face each other with the air layer W interposed therebetween.

  The material which comprises the inner exterior material 1 and the outer exterior material 2 is not specifically limited. Specifically, the inner exterior material 1 is preferably a material having a high heat insulating effect, for example, a wooden board, a wooden plywood, a plastic board, a metal board, a paper or plastic cardboard, a plate-shaped synthetic resin foam, One type or two or more types of glass wool can be exemplified. Here, “cardboard” is obtained by adhering a sheet-like material (paper, plastic, etc.) to the front and back surfaces of a corrugated material (paper, plastic, etc.), and has a structure in which air is contained inside. Say things. Corrugated cardboard includes, for example, one in which air from corrugated material is formed in multiple layers, and one in which corrugated material is exposed on the surface (sometimes referred to as single-sided corrugated cardboard). Synthetic resin foams, for example, foamed polystyrene (polystyrene foam), rigid foamed polyethylene, rigid urethane foam, etc., as well as lightweight aggregates made of hollow bodies such as glass balloons and silica balloons, molded with a resin binder Etc. are also included.

  The outer exterior material 2 includes, for example, outer walls (exterior materials) such as mortar walls, siding walls, concrete walls, and roofs (exterior materials) such as metal plates, flat roof materials, straw roof materials, and straight roof materials. ) Is included.

  In the building H, the thermal barrier coating 3 is applied to at least one of the outer surface and the inner surface of the inner exterior material 1 and the outer surface and the inner surface of the outer exterior material 2. Here, in the present invention, the “outer surface” of the inner exterior material 1 and the outer exterior material 2 refers to a surface located outside the building H, and the “inner surface” refers to a surface located inside the building H. Say.

  Although FIG. 2 illustrates the form in which the thermal barrier paint 3 is applied to the outer surface of the inner exterior member 1 and the outer surface and inner surface of the outer exterior member 2, the thermal barrier paint in the heat insulating structure of the building H of the present invention. The application area | region of 3 is not limited to such a form. That is, for example, the thermal barrier coating 3 may be applied to all of the outer surface and the inner surface of the inner exterior material 1 and the outer surface and the inner surface of the outer exterior material 2, or may be applied to any one surface. However, from the viewpoint of the heat insulating effect, it is preferable that the thermal barrier coating 3 is applied to at least the outer surface of the outer exterior material 2.

  The thermal barrier paint 3 may be in any form of a water-based paint, an organic solvent-type paint, and a powder paint, but is preferably a liquid paint containing a solvent or a dispersion medium. For example, the thermal barrier coating 3 can include a vehicle, a liquid medium in which the vehicle is dissolved or dispersed, and a metal powder.

  Vehicles include acrylic resins, polyvinyl acetate resins, vinyl chloride resins, vinylidene chloride resins, thermoplastic resins such as thermoplastic elastomers, BR, SBR, NBR, CR, EPDM, rubbers such as fluoro rubber, solvents or dispersions What forms a film when a medium evaporates can be used. In some cases, a thermosetting resin such as a urethane resin composed of a polyol and an isocyanate, a phenol resin, or an epoxy resin can be used.

  It is particularly preferable to use an aqueous emulsion as the vehicle and the liquid medium. Examples of water-based emulsions include acrylic emulsions, silicon acrylic emulsions, urethane emulsions, urethane acrylic emulsions, SBR emulsions, and epoxy emulsions. Inorganic binders such as water glass and colloidal silica are also selected and used depending on the application. be able to.

  The metal powder has heat reflectivity, and examples thereof include titanium, aluminum, gold, silver, indium, copper, and oxides thereof. Although not a metal in a strict sense, in the present invention, a powder such as silica, glass, mica, and talc, which has a metallic glitter layer on the surface and has heat reflectivity, is included in the metal powder. Although the shape of metal powder is not specifically limited, For example, shapes, such as spherical shape and scale shape, can be illustrated. Furthermore, in order to ensure heat insulation, it is preferable that the metal powder is contained in the heat insulation paint 3 in an amount of 20% by mass or more.

  As a preferred thermal barrier paint 3, specifically, in addition to the thermal barrier effect, it has excellent antibacterial and deodorizing effects. “Blue on Tech” manufactured by High Pressure Gas Industry Co., Ltd. (sales source: n-tech Co., Ltd.) Etc. can be illustrated.

  The coating thickness of the thermal barrier coating 3 is not particularly limited and can be appropriately designed in consideration of the thermal barrier effect. As a temporary standard, for example, a range of about 10 μm to 400 μm can be exemplified. Moreover, the application | coating method of the thermal-insulation coating material 3 is also not specifically limited, Spraying by spraying, application | coating with a roller, etc. can be performed.

  Since the building H has a double wall structure in which the outer exterior material 2 is disposed outside the inner exterior material 1 via the air layer W, the building H has a double wall structure. It is difficult for heat and cold to reach between the rooms of the building H. Further, since the building H is coated with the thermal barrier coating 3 on at least one of the outer surface and the inner surface of the inner exterior material 1 and the outer surface and the inner surface of the outer exterior material, heat from the outside is blocked. The heat insulation effect of the building H is further improved. For example, as illustrated in FIG. 2, when the thermal barrier coating 3 is applied to a plurality of surfaces (three layers), the thermal barrier effect is further improved.

  Since the heat insulating structure of a building according to the present invention exhibits an excellent heat insulating effect, for example, a comfortable environment is maintained even if the operation of indoor air conditioning is refrained, and thus energy saving and power saving effects are high.

  Furthermore, as illustrated in FIG. 1, the building H is provided with vents 4 (a lower vent 4 a and an upper vent 4 b) that communicate the outside of the outer exterior material 2 with the air layer W.

  For example, the lower vent 4a can be disposed near the ground or under the floor of the outer exterior material 2, and the upper vent 4b can be disposed near the outer exterior 2 or near the roof of the eaves.

  As described above, the temperature rise in the room of the building H is suppressed by the heat insulating effect of the air layer W and the thermal barrier paint 3, but the air in the air layer W rises in temperature, for example, on a hot day. May extend into the interior of building H. However, when the lower vent 4a and the upper vent 4b are provided, relatively high temperature air drifting in the air layer W is released from the plurality of upper vents to the outside air, and natural convection is generated. It is promoted and introduced into the air layer W through the lower vent 4a. As described above, the air in the air layer W having a high temperature is released to the outside air through the upper vent 4b, while the natural convection in which the lower outside air having a temperature lower than that of the upper portion is introduced into the air layer W through the lower vent 4a. Occurring and repeated, the temperature of the air layer W balances with the outside air temperature and is maintained at substantially the same temperature. For this reason, the temperature of the air layer W is kept low, and the temperature rise in the room of the building H is suppressed. In addition, since the lower vent 4a and the upper vent 4b are provided, air permeability is ensured, so that generation of mold and the like due to moisture is suppressed, and corrosion of the inner exterior material 1 and the outer exterior material 2 is also suppressed. Is done.

Furthermore, one Embodiment of the heat insulation structure of the building of this invention is described with FIG. 3, FIG.
3 is a perspective view illustrating an embodiment of a heat insulating member used in the heat insulating structure of a building according to the present invention. FIG. 4 is a view between the inner exterior material and the outer exterior material (air layer). It is an internal perspective view from the outside exterior material (outer wall) side which illustrated the state where a plurality of heat insulation members illustrated in the above were arranged.

  The heat insulating member 5 is formed in a lattice shape in which the vertical fraction portion 52 and the horizontal fraction portion 53 that connect the opposing frame portions 51 are orthogonal to each other inside the rectangular frame portion 51. A plurality of sections S are formed in a space surrounded by the image section 52 and the horizontal fraction section 53.

  Examples of the material of the heat insulating member 5 include plastic, metal, paper or plastic corrugated cardboard, foamed polystyrene (polystyrene foam), hard foamed polyethylene, and synthetic resin foam such as hard urethane foam.

  The thickness of the heat insulating member 5 is formed substantially equal to the length between the inner exterior material 1 and the outer exterior material 2 (air layer W). For this reason, between the inner exterior material 1 and the outer exterior material 2 (air layer W), the heat insulating member 5 is sandwiched between the outer surface of the inner exterior material 1 and the inner surface of the outer exterior material 2.

  For example, as illustrated in FIG. 4, a plurality of heat insulating members 5 are continuously disposed between the inner exterior material 1 and the outer exterior material 2 (air layer W), so that the frame portion 51 and the vertical fractionation portion 52 are arranged. And the area | region where the air layer W was divided | segmented into the grid | lattice shape containing the some division S by the horizontal fraction part 53 is formed. Thereby, in the area | region where the heat insulation member 5 is arrange | positioned, since the flow of the air between adjacent divisions S is interrupted | blocked, the heat insulation effect improves with the air included in each division S. FIG. Therefore, an increase in the room temperature of the building H can be suppressed in summer when the outside air temperature is high, and a temperature drop in the room of the building H can be suppressed in winter when the outside air temperature is low.

  It is also effective to provide the heat insulating member 5 and the vents (lower vent 4a and upper vent 4b) illustrated in FIG. For example, when the vents illustrated in FIG. 1 are provided, the temperature of the building H can be kept warm in winter when the outside temperature is low, although the temperature rise suppressing effect by natural convection can be expected in summer when the outside temperature is high. Insulation effect may be slightly weak. Therefore, for example, a heat insulating member 5 is provided around the room or under the floor, for example, around the room where the heat insulation effect is desired to be improved, while ensuring the air permeability of the air layer W by arranging the air vents as necessary. The flow can be cut off to increase the heat insulation.

  The heat insulation structure of the building of the present invention is not limited to the above embodiment. For example, the structure, arrangement position, number of arrangements, etc. of the vent can be designed as appropriate. Moreover, the heat insulation member used for the heat insulation structure of the building of this invention should just be able to form several division with which the flow of air was interrupted | blocked, and a shape, the magnitude | size (length, width, etc.) of a division ) And the like are not particularly limited. Moreover, a heat-insulating effect can be enhanced by applying a heat-shielding paint to the heat insulating member.

DESCRIPTION OF SYMBOLS 1 Inner exterior material 2 Outer exterior material 3 Thermal barrier coating material 4 Vent 5 Thermal insulation member H Building S Section

Claims (5)

A heat insulating structure of a building having a double wall structure in which an outer exterior material is disposed outside the inner casing of the building, and an outer exterior material is disposed outside the inner exterior material via an air layer,
A heat insulating structure for a building, wherein at least one of the outer surface and the inner surface of the inner exterior material and the outer surface and the inner surface of the outer exterior material is coated with a thermal barrier paint.   2. The heat insulating structure for a building according to claim 1, wherein a vent hole communicating with the air layer is disposed in the outer exterior material.   A heat insulation member is sandwiched between the inner exterior material and the outer exterior material, and the heat layer divides the air layer between the inner exterior material and the outer exterior material in the vertical direction and / or the horizontal direction. The heat insulation structure for a building according to claim 1 or 2, wherein the air flow between adjacent compartments is blocked.   The heat insulating structure for a building according to any one of claims 1 to 3, wherein the heat insulating member is formed in a lattice shape in which the vertical division portion and the horizontal division portion intersect. A building provided with the heat insulating structure according to claim 1.

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