Heat-shielding healthy house

Abstract

To provide a heat insulating dwelling house capable of enhancing an indoor cooling / heating effect and taking measures against underfloor moisture by supplying underground or underfloor geothermal heat to an outer wall, a roof and the inside of a room.SOLUTION: The heat shielding house 100 is made of concrete, and includes a base 21 of a building having an internal space 21A, an outdoor heat shielding material 6E covering the entire area of one surface or the entire area of both surfaces of a base rising portion 22 of the base 21, a flooring portion 23 constructed on the upper side of the base 21, and an indoor heat shielding material 6C provided on the entire surface of the flooring portion 23 on the indoor side or the underfloor side. The heat shielding house 100 is energy-saving and provides a cool indoor environment in summer and a warm indoor environment in winter, so that a comfortable life can be enjoyed indoors.SELECTED DRAWING: Figure 7

Description

[Technical Field]

[0001] The present invention relates to a heat-shielding building that improves the indoor heating and cooling effect and takes measures against moisture under the floor by supplying geothermal heat from the ground or under the floor to the foundation, roof exterior wall, and interior of the building. [Background technology]

[0002] Ventilation openings are usually provided at the base of a building's mat foundation or strip foundation (see, for example, Patent Document 1). These ventilation openings are provided to prevent moisture buildup in the underfloor space by drawing in outside air into the space under the floor and expelling it from the space under the floor to the outside. Some buildings also have charcoal or other materials laid out under the floor to prevent moisture buildup (see, for example, Patent Document 2).

[0003] The house described in Patent Document 1 has an underfloor space surrounded by an insulated foundation, a first floor supported by the foundation, and a dirt floor located below the floor, and a foundation ventilation opening is formed in the foundation to introduce outside air into the underfloor space. In the house described in Patent Document 2, the area under the floor is a sealed slab foundation, an opening is provided on the north wall of the underfloor area, and charcoal or bamboo charcoal is spread over the slab foundation under the floor. The charcoal or bamboo charcoal spread over the slab foundation absorbs moisture and odors from the circulating air. It is stated that the area and thickness of the charcoal or bamboo charcoal are sufficient to absorb moisture during the rainy season and other periods to maintain a comfortable humidity level. [Prior art documents] [Patent documents]

[0004] [Patent Document 1] Japanese Patent Application Laid-Open No. 2015-224485 [Patent Document 2] Registered Utility Model No. 3123276 Summary of the Invention [Problem to be solved by the invention]

[0005] In conventional homes, slab foundations and strip foundations have ventilation holes at the base of the foundation. The Building Standards Act requires installation of ventilation holes in strip foundations if moisture-proofing measures are not taken in the dirt floor, but does not require it in slab foundations. However, most buildings now have ventilation holes under the floor as a measure against moisture under the floor.

[0006] There are three main problems with underfloor moisture: (1) Rainwater intrusion First, the rainwater that should be prevented is most likely to enter through ventilation openings due to strong winds, etc. Second, it enters through the joints of bathroom tiles. Until now, bathrooms were built with tiles on top of mortar. For various reasons, the mortar would crack and water would seep under the floor. However, these days, most bathrooms are modular, so this problem is no longer present. (2) Moisture penetration The first type is often from underfloor ventilation holes, and there is no way to prevent it. The second type is moisture moving from inside the room to underfloor. This includes steam generated when cooking, gas stoves, and kerosene fan heaters, but it is a possible problem that cannot be prevented at present. The third type is moisture moving from the ground surface to underfloor, where moisture on the ground enters underfloor in the form of steam. Currently, this can be addressed with waterproof sheets and slab foundations. (3) Condensation occurring in underfloor equipment Condensation occurs on the pipes in the toilet and bathroom due to cold air entering through underfloor vents, but this problem cannot be solved at present. In this way, underfloor vents, which are originally considered necessary to prevent humidity, are actually problems that are caused by the existence of underfloor vents.

[0007] Some buildings spread charcoal under the floor to prevent moisture from building up. It is true that charcoal can be understood as a material with conditioning properties, but it is hard to believe that spreading it under the floor will be able to absorb the large amounts of moisture that enters under the floor through underfloor ventilation openings or interior floors.

[0008] The present invention has been made to solve these problems, and an object of the present invention is to provide a heat-shielding house that takes measures against moisture under the floor. [Means for solving the problem]

[0009] The heat-shielding house of the present invention is characterized by comprising a foundation portion of a building made of concrete and having an internal space, a first material with high reflectivity to radiant heat such as aluminum foil that covers the entire area of ​​one side or both sides of the foundation rise portion of the foundation portion, a floor portion constructed above the foundation rise portion, and a second material with high reflectivity to radiant heat such as aluminum foil that is provided on the entire indoor side or underside of the floor portion.

[0010] The heat-shielding house of the present invention is a heat-shielding house comprising an exterior member, an interior member constructed inside the exterior member, a first ventilation layer formed between the exterior member and the interior member, and a second ventilation layer formed inside the roof, and is characterized in that it has a heat supply means buried underground, outside air is supplied to the heat supply means, and the air heat-exchanged by the heat supply means is supplied to the first ventilation layer and the second ventilation layer.

[0011] The heat-shielding house of the present invention is characterized in that the air in the internal space of the foundation is used for heating or cooling the room, and the air in the internal space is supplied to the room by a fan after passing through a filter.

[0012] The heat-shielding house of the present invention comprises an exterior member, an interior member constructed inside the exterior member, and a first ventilation layer formed between the exterior member and the interior member, wherein a third material having a high reflectivity to radiant heat, such as aluminum foil, is provided inside the exterior member within the first ventilation layer, a fourth material having a high reflectivity to radiant heat, such as aluminum foil, is provided directly on the indoor side of the interior member that constitutes the room and facing the atmosphere inside the room, and a fifth material having a high reflectivity to radiant heat, such as aluminum foil, is provided on the floor of the room, and the first ventilation layer is formed on the radiating side of the third material having a high reflectivity to radiant heat, such as aluminum foil, outside air is taken in through an intake port of the first ventilation layer and exhausted through an exhaust port of the first ventilation layer, and opening and closing devices using springs made of shape memory alloy are provided at the intake port of the first ventilation layer and the exhaust port of the first ventilation layer, the springs are exposed to the outside of the exterior member, and the opening and closing devices open and close when the springs sense the outside air temperature, thereby regulating the amount of air flowing through the first ventilation layer.

[0013] The heat-shielding house of the present invention has a second ventilation layer formed on the inside of the roofing material, and a sixth material with high reflectivity to radiant heat, such as aluminum foil, is provided on the inside of the roofing material within the second ventilation layer, and the second ventilation layer is formed on the radiation side of the sixth material with high reflectivity to radiant heat, such as aluminum foil, and is characterized in that outside air is taken in through an intake port of the second ventilation layer and exhausted through an exhaust port of the second ventilation layer, and an opening and closing device is provided at the exhaust port of the second ventilation layer so as to adjust the amount of air passing through the second ventilation layer. [Effects of the Invention]

[0014] In the heat-shielding house of the present invention, one or both sides of the foundation riser of the foundation section, which has an internal space, are entirely covered with a first material with high radiant heat reflectivity, such as aluminum foil, and a second material with high radiant heat reflectivity, such as aluminum foil, is provided on the entire indoor or underfloor side of the floor section. In this way, the internal space of the foundation is surrounded by a material with high radiant heat reflectivity, such as aluminum foil. Therefore, in the heat-shielding house of the present invention, the temperature under the floor remains stable throughout the year, preventing condensation under the floor. Furthermore, the outdoor heat-shielding material (the first material with high radiant heat reflectivity, such as aluminum foil) applied to the outside of the slab foundation is adhered to the foundation, but its thin thickness helps prevent termite intrusion.

[0015] As mentioned above, the temperature under the floor in a heat-shielding house remains stable throughout the year, with the first floor being cool in the summer and providing a cooling effect, and in the winter a heating effect. Therefore, in a heat-shielding house, the temperature difference between the underfloor and the interior can be reduced, even in summer and winter. By reducing the temperature difference between the underfloor and the interior, the inside of a heat-shielding house becomes a very comfortable environment to live in.

[0016] In the heat-shielding house of the present invention, heat-exchanged air is supplied to the first ventilation layer formed between the exterior and interior members and the second ventilation layer formed inside the roof via heat supply means buried underground. Furthermore, the heat-shielding house of the present invention uses the air in the interior space of the foundation for indoor heating or cooling, and supplies the air from the interior space to the room via a fan after passing through a filter. Therefore, the heat-shielding house of the present invention can enhance the indoor heating and cooling effect.

[0017] The heat-shielding house of the present invention has a first ventilation layer formed between an exterior member and an interior member and a second ventilation layer formed on the inside of the roof. Outside air is taken in through the air inlet of the first ventilation layer and the air inlet of the second ventilation layer and exhausted through the air outlet of the first ventilation layer and the air outlet of the second ventilation layer. The air inlet of the first ventilation layer and the air outlet of the first and second ventilation layers are each provided with an opening / closing device using a spring made of a shape memory alloy. The spring is exposed to the exterior of the exterior member, and the opening / closing device spring senses the outside air temperature to open and close, thereby adjusting the amount of air flowing through the first and second ventilation layers. Therefore, the heat-shielding house of the present invention can enjoy the above-mentioned effects, as well as automatically adjust the indoor temperature and automatically prevent condensation from occurring within the house without using energy such as a power source. As a result, the heat-shielding house is energy-efficient, providing a cool indoor environment in the summer and a warm indoor environment in the winter, allowing residents to live comfortably. [Brief explanation of the drawings]

[0018] [Figure 1] 1 is a cross-sectional view of an exterior wall of a heat-shielding house according to an embodiment of the present invention. [Figure 2] 1 is a diagram illustrating a heat insulating structure of a heat insulating house according to an embodiment of the present invention. [Figure 3] 1 is an enlarged view of a heat insulating structure of a heat insulating house according to an embodiment of the present invention. [Figure 4] 1 is a cross-sectional view of a heat-shielding structure formed on the roof of a heat-shielding house according to an embodiment of the present invention. [Figure 5] 1 is a diagram showing an opening / closing section made of a shape memory alloy of an opening / closing device provided in a heat-shielding house according to an embodiment of the present invention. [Figure 6] 1A and 1B are diagrams for explaining the opening and closing of an opening and closing device for a heat-shielding house according to an embodiment of the present invention, in which (a) shows the closed state and (b) shows the open state. [Figure 7] FIG. 10 is a cross-sectional view of a heat-shielding house according to an embodiment of the present invention, in which heat-shielding materials are installed on the foundation rise of a slab foundation and on the indoor floor. [Figure 8]FIG. 10 is a diagram for explaining how air is supplied to the ventilation layer of the exterior wall from piping buried underground in a heat-shielding house according to an embodiment of the present invention. [Figure 9] 1 is a schematic diagram of an air circulation system in a heat-shielding house according to an embodiment of the present invention, which takes air from under the floor into the room. [Figure 10] This shows the results of [Test 1] in a heat-shielding house. DETAILED DESCRIPTION OF THE INVENTION

[0019] Hereinafter, the best mode for carrying out the present invention will be described with reference to FIGS.

[0020] The temperature of the earth's surface is constantly around 14°C, and in Japan, where there are four seasons, it is an effective heat source that can be used for both heating and cooling. The cheapest and most effective way to utilize geothermal energy in a building is to use it under the floor, where the ground is in contact with the ground. However, under the floor, ventilation openings are installed at the base of the foundation, and air flows in and out through these openings, preventing effective utilization of the geothermal energy. Furthermore, under the floor, ventilation openings, which were originally installed to prevent moisture under the floor, have actually had a negative effect in the current situation where equipment and construction methods such as slab foundations and modular baths are being updated.

[0021] As shown in FIG. 1, a heat-shielding house 100 according to the present invention has a heat-shielding structure 1. This heat-shielding structure 1 includes an exterior member 2, an interior member 3 constructed inside the exterior member 2, and a ventilation layer 4 (first ventilation layer 4) formed between the exterior member 2 and the interior member 3. A material 6A with high reflectivity against radiant heat, such as aluminum foil (hereinafter also referred to as a high-reflectivity material), is provided inside the exterior member 2 within the ventilation layer 4. Furthermore, a high-reflectivity material 6B is provided directly on the indoor side of the interior member 3 constituting the room 3A and facing the atmosphere inside the room. This high-reflectivity material 6B is provided on at least the surfaces of the ceiling, walls, etc. located on the indoor side (atmospheric side) of the room 3A. Note that no heat insulating material is provided between the exterior member 2 and the interior member 3. Furthermore, a ventilation layer 4 (second ventilation layer 4) is also formed inside the roofing material 9. Note that heat-shielding tape can be attached to doors and window glass, which enhances the heat-shielding effect inside the heat-shielding house 100.

[0022] As shown in Figures 2 and 3, waterproof paper (waterproof layer) 8 is provided on the outside of the interior member 3, and structural plywood 7 is provided on the outside of this waterproof paper 8. In addition, a ridge ventilation material 20 is formed on top of the roofing material 9 (Figures 1 and 4). In the heat-shielding house 100 of the present invention, a high-reflectivity material 6A is attached to the inside of the exterior member 2, and high-reflectivity materials 6B and 6C are attached to the inside of the interior member 3. In addition, a high-reflectivity material 6D is directly attached to the inside of the roofing material 9. Therefore, the ventilation layer 4 is formed on the radiation side of the high-reflectivity material 6D.

[0023] In a heat-shielding house 100 according to the present invention, opening and closing devices 5 using shape memory alloys are provided at the intake and exhaust ports of the first ventilation layer 4 formed between the exterior member 2 and the interior member 3, and at the exhaust port of the second ventilation layer 4 formed inside the roofing material 9, respectively. The opening and closing devices 5 open and close when the shape memory alloy senses the outside air temperature, thereby adjusting the amount of air passing through the ventilation layer 4. The opening and closing device 5 used in the present invention is a sliding device using a shape memory alloy. As shown in FIG. 5 , this opening and closing device 5 has two rectangular metal plates (sliding members) 12, each having a plurality of quadrangular openings 11, stacked on a base 10. One of the metal plates 12 is opened and closed by a spring 13 made of a shape memory alloy that senses the temperature and expands and contracts, thereby opening and closing the openings 11.

[0024] Specifically, as shown in Fig. 6(a), when it cools, the spring 13 expands, causing the metal plate 12 to move to the right in the left-right direction X, and the opening 11 is closed by the metal plate 12, resulting in a closed state. On the other hand, as shown in Fig. 6(b), when it warms to a predetermined temperature, the spring 13 contracts, causing the metal plate 12 to move to the left in the left-right direction X, and the opening 11 opens, resulting in an open state. By utilizing this property, the opening 11 is opened and closed to adjust the flow of air in and out of the ventilation layer 4, and as a result, the amount of air flowing through the ventilation layer 4 is adjusted.

[0025] Providing a ventilation layer 4 on the inside of the roof 9 or on the exterior wall 2 has a large cooling effect in the summer, resulting in a large energy-saving effect, but conversely reduces the heating effect in the winter, resulting in a negative energy-saving effect. A sliding opening / closing device 5 using a shape-memory alloy reduces this negative effect in winter. By using this opening / closing device 5 to close the intake and exhaust ports of the ventilation layer 4, a still air layer is formed within the ventilation layer 4, making it possible to keep the heat in the heat-shielding house 100.

[0026] Currently used shape memory alloys can be fully closed (closed state) at 18°C ​​and fully open (open state) at 28°C. This opening / closing temperature can be changed depending on the type of shape memory alloy, and is not limited to the above temperatures. The temperature at which the opening / closing device 5 senses and activates is crucial. The heat-shielding house 100 (heat-shielding structure 1) features a shape memory alloy spring 13 attached to the outside air side and exposed to the outside. Let's assume that the shape memory alloy spring 13 is located within the ventilation layer 4. When sunlight hits the roof or exterior wall 2 during the daytime at 0°C in midwinter, the temperature within the ventilation layer 4 rises above 18°C, causing the sliding-type opening / closing device 5 using the shape memory alloy to open. As a result, air begins to flow within the ventilation layer 4, but since the room temperature is approximately 22°C, indoor heat continues to flow into the ventilation layer 4, causing the sliding-type opening / closing device 5 using the shape memory alloy to remain in the open state, resulting in reduced energy savings. Another advantage of the slide-type opening and closing device 5 using a shape memory alloy is that the spring 13 senses the outside air temperature and operates accordingly, so no power source is required, making it possible to build a zero-energy system that does not require any control devices.

[0027] Furthermore, as shown in Fig. 7, the heat-shielding house 100 according to the present invention comprises a concrete foundation 21 having an interior space 21A, a material 6E with high reflectivity against radiant heat such as aluminum foil covering the entire area on one side (the entire circumference of one side) or the entire area on both sides (the entire circumference of both sides) of a foundation riser 22 of the foundation 21, a first-floor floor (floor material) 23 constructed above the foundation riser 22, and a highly reflective material 6C provided on the entire indoor side or underside of the floor 23. This heat-shielding house 100 is a building that utilizes geothermal energy. Note that the interior space 21A of the foundation 21 refers to the area under the floor 23.

[0028] Joists 24 are arranged above the foundation riser 22, and these joists 24 are installed on the foundation riser 22 via foundation packing 25. A plurality of pillars (framework) 26 are installed above the joists 24. A carpet 27 is laid on top of the high-reflectivity material 6C installed on the floor 23. A high-reflectivity material 6E is attached with adhesive or double-sided tape to one side (outside or inside) or both sides (outside and inside) of the entire circumference of the foundation riser 22 on the periphery of the foundation 21, which is a slab foundation or a strip footing. If a foundation packing is used on the top edge of the foundation riser 22, the high-reflectivity material 6E is raised up to the base to completely seal it so that air does not flow through the gap between the base and the foundation. If a ventilation opening, a pipe through-hole, or the like is formed in the foundation riser 22, it is installed so that it seals from the outside. Highly reflective material 6E is usually applied at least to the exterior side of foundation riser 22, but it is even more effective if applied to the interior side as well. This makes it possible to completely waterproof, moisture-proof, and even insulate the exterior and interior sides of foundation riser 22. It is preferable that foundation 21 be a slab foundation, and that a waterproof sheet be applied to the underside of foundation 21. This provides thorough moisture protection from the ground surface. If the house has ventilation openings, highly reflective material 6E is installed to cover the ventilation openings.

[0029] The room is filled with steam from cooking and steam generated by gas stoves and kerosene fan heaters. This moisture flows in the same direction as the room temperature. The underfloor interior space 21A is cooler than room temperature throughout the year, and there is a high possibility that moisture from the first floor will leak into this interior space. In the heat-shielding house 100 of the present invention, a highly reflective material 6C is installed on the entire upper side (above floor) and lower side (below floor) of the floor 23 on the first floor. This completely prevents moisture from moving between the inside of the first floor and the underfloor interior space 21A.

[0030] In this way, it is possible to prevent moisture from moving around the entire periphery of the foundation riser 22, the first floor 23, and underneath the foundation 21, creating an environment in which moisture and the like hardly penetrates from the outside into the underfloor interior space 21A. Furthermore, since the periphery of the underfloor interior space 21A is covered with the highly reflective material 6E, it is possible to retain the heat from the earthen floor, which is transferred in the form of conductive heat.

[0031] The aluminum foil used here is generally a highly reflective material against radiant heat (high-reflectivity material). However, because using it alone can cause corrosion and strength issues, multiple layers of various materials are used as heat-shielding materials. The outdoor heat-shielding material used on the exterior of the foundation 21 faces the atmosphere and receives direct sunlight, so its surface is designed to have a diffuse reflection design to prevent reflected light from irradiating nearby people and causing eye damage. Furthermore, because the heat-shielding material uses high-purity aluminum foil, contact with alkaline concrete can cause corrosion. Therefore, an alkali-resistant material must be used. The heat-shielding material is composed of seven layers: a high-transmittance resin layer, aluminum foil, a heat-sealed layer, glass cloth, a heat-sealed layer, aluminum foil, and a high-transmittance resin layer (diffuse reflection structure). The aluminum foil used is important, with a purity of 99.5% or higher and a reflectivity of 98%. However, a colored high-transmittance resin layer (diffuse reflection structure) is applied to the surface, resulting in a final reflectivity of approximately 90%. The high reflectivity materials 6A to 6E can be appropriately selected depending on the location of use, and the same material or different materials may be used.

[0032] When installing heat-shielding materials (high-reflectivity material 6E) on the foundation 21, they are usually directly attached with adhesive to withstand strong winds and rainwater. On the other hand, indoor heat-shielding materials (high-reflectivity material 6C) used on indoor floors are used on the interior side, so a shiny finish is acceptable. However, to prevent the risk of acid and alkaline components adhering, highly chemical-resistant materials are also used. They are constructed with seven layers: a high-transmittance resin layer, aluminum foil, a heat-sealed layer, nonwoven fabric, another heat-sealed layer, aluminum foil, and a high-transmittance resin layer. The heat-shielding material used has a reflectivity of 98%, but this is slightly reduced by the high-transmittance resin layer on the surface, ultimately resulting in a reflectivity of around 95%. When installing on indoor floors, simple affixing with double-sided tape is sufficient. However, since people will be walking on the surface, carpet or artificial turf is typically installed on top of the heat-shielding material. Furthermore, when installing underfloors, it is usually tacked to the base.

[0033] Next, the utilization of geothermal energy under the floor with the outside of the foundation rising portion 22 insulated will be described in detail.

[0034] In summer, 90% of the radiant heat from outside is reflected by the heat-shielding material (high-reflectivity material 6E) installed on the outside of the foundation riser 22, and only about 10% is transmitted to the internal space 21A of the foundation 21 below the floor. However, the ground temperature under the floor is approximately 14°C, and the heat transmitted from the foundation 21 is absorbed by the floor. Meanwhile, heat of room temperature 25°C moves from inside the room to the floor, but this is also absorbed because the ground temperature under the floor is low. Therefore, although the indoor side would normally be warm due to the reflective direction, the floor is cooled by geothermal heat, resulting in a cool environment.

[0035] In winter, radiant heat from outdoors is emitted at a low angle of 30°C, so the foundation 21 is generally heated, but the high reflectivity of the heat-shielding material (high-reflectivity material 6E) means that little heat is supplied to the internal space 21A under the floor. However, because air below 0°C would normally flow through the underfloor ventilation openings and be cooled, the cold is much less than before. Of course, on the indoor side, heat from a room temperature of around 22°C is transferred to the underfloor, where the temperature is 14°C, but this also raises the temperature from below 0°C to 14°C, significantly reducing the cold.

[0036] As a result, the geothermal energy remains stable at 14°C throughout the year, and the room temperature varies only by about 3°C ​​between summer and winter, which is a small difference.Furthermore, since the surrounding area is sealed, moisture cannot enter from the surrounding area, so condensation does not occur on the pipes under the floor, etc., and the environment under the floor, which has previously been a problem due to moisture, is completely transformed.

[0037] The heat-shielding house 100 of the present invention comprises a first ventilation layer 4 formed between an exterior member 2 and an interior member 3, and a second ventilation layer 4 formed on a roof 9, and has piping and a heat exchange device (heat supply means) buried underground, and outside air is supplied to these piping and heat exchange device, and the heat-exchanged air is supplied to the first ventilation layer 4 and the second ventilation layer 4.

[0038] In the heat-shielding house 100, air is taken in from one side of pipes or heat exchangers buried underground and released from the other side into a first ventilation layer 4 formed inside the exterior wall 2 of the building, thereby cooling the exterior wall 2 and the like, and ultimately increasing the cooling effect of the room 3A.

[0039] As shown in Figure 8, an example of the overall configuration includes a small solar panel 30, an intake fan 31, a heat exchanger piping unit 32, and a thin supply nozzle 33. The intake fan 31 senses the temperature inside the wall and is powered by the small solar panel 30. The intake fan 31 is also equipped with a dust filter 34. The heat exchanger piping unit 32 is a 50 mm diameter, 7-8 m long pipe bent continuously every 1 meter or so, with the top buried approximately 5 m underground. The exposed portion is covered with a highly insulating outdoor heat shield, and the discharge side has a thin trapezoidal nozzle for wide-area suction. The area above and around the buried heat exchanger piping unit 32 is also covered with a heat shield to minimize the impact of radiant heat from the sun. The heat exchanger piping unit 32 can also be installed in the interior space 21A under the floor. In this case, it is preferable to install the heat exchanger piping unit 32 so that it is in contact with the base portion 21 as closely as possible.

[0040] Next, a system for converting geothermal heat into air via the heat exchanger piping unit 32 and supplying the air to the ventilation layer 4 will be described.

[0041] This system is designed to lower indoor temperatures and operates only when the wall temperature is approximately 28°C or higher. Below that temperature, the system shuts down because it would lower the room temperature. Therefore, it only operates during the hot summer months. The air used in this system is heat-exchanged and supplied to the exterior wall 2 or roof, then directly exhausted. This air has no direct contact with the living space, making maintenance relatively easy. It also uses small solar panels 30 for operation. These solar panels 30 only need to operate during hot, sunny days, so they do not require any additional energy sources. However, it is important to note that the outdoor ground temperature can change. While this is not a problem when the heat exchanger piping unit 32 is buried more than 5 meters underground or installed under a slab foundation, using it in a shallow, outdoor area exposed to the atmosphere can increase the ground temperature and reduce effectiveness. Therefore, in such cases, it is necessary to protect the heat exchanger piping unit 32 from sunlight and surround it with heat-shielding material for at least 1 meter around it.

[0042] The heat-shielding house 100 according to the present invention utilizes the air in the internal space 21A of the foundation 21 for heating or cooling the room 3A. Specifically, as shown in Fig. 9, the air in the internal space 21A is passed through a filter 40 and supplied to the room 3A by a supply fan 41.

[0043] In this heat-shielding house 100, air from under the floor is filtered by a filter 40 and supplied to each room 3A by a supply fan 41. Supply piping 42 is installed, and a supply fan 41 is attached to the supply piping 42. The supply fan 41 is installed from the foundation 21 to the ceiling 45, and blows air out from an outlet 42A toward the room 3A. In essence, the air from under the floor is circulated and used for heating and cooling. A ceiling fan 46 can also be installed near the outlet 42A. Furthermore, the heat-shielding house 100 is provided with a small air intake, and air below the ceiling 45 is discharged directly to the outdoors.

[0044] A heating and cooling system using a supply fan 41 in a heat-shielding house 100 will be described in detail. In summer, the indoor temperature can reach 28°C, but the temperature in the underfloor interior space 21A is 10°C lower. This cool underfloor air is drawn into the room 3A to lower the room temperature. Excess air is returned from the room 3A to the underfloor again via exhaust piping installed under the floor. In other words, heat exchange of the air takes place throughout the entire underfloor interior space 21A. The reason that excess air in the room 3A is returned to the underfloor interior space 21A rather than being exhausted outdoors is that the amount of heat exchange is reduced, stabilizing the temperature under the floor.

[0045] The air in room 3A should be blown out from above the ceiling fan 46 if there is one, or horizontally if there is no ceiling fan 46. By supplying a gentle breeze over a long period of time, the strain on the body can be reduced. Another advantage is that by circulating the air between under the floor and room 3A, there is no need to introduce air from outside, and there is no need to take measures against PM2.5 and pollen that are dispersed in the air. Another major advantage of this system is that the equipment is simple, so installation costs are very low.

[0046] [Test 1] Outdoor heat-shielding material was installed around the entire perimeter of the building's foundation, and indoor heat-shielding material was installed on the floor.In addition, heat-shielding material was installed on the indoor side of the exterior wall and roof materials around the building, and a ventilation layer was installed inside to allow ventilation.The test was conducted with the windows closed, and the temperature in each room was measured under the following measurement conditions. (1) Measurement date and time: May 24, 2020, 15:30 (2) Weather: Sunny (3) Temperature: 33℃ (4) Room condition: 1 guest, total of 2 guests (5) Air conditioner usage status: Unused (6) Measurement thermometer: Thermo recorder (7) Heat-shielding materials used: THB-FD (manufactured by Nippon Heat Shield Co., Ltd.) on the periphery of the foundation, THB-X (manufactured by Nippon Heat Shield Co., Ltd.) on the floor, THB-FX (manufactured by Nippon Heat Shield Co., Ltd.) in the ventilation layer (8) In-wall ventilation: Atmospheric

[0047] [Result 1] The result 1 is shown in FIG.

[0048] [Consideration 1] Generally, the temperature on the ground is said to be around 14°C, but in this test building it was 19.0°C throughout the day, perhaps due to the season. However, the temperature only changed by around 0.3°C throughout the day, so it was very stable. Also, the floor inside the building felt cool and cooled by geothermal heat, even though the room temperature was around 27°C. The temperature on each floor was uniform with little difference.

[0049] [Test 2] When the temperature was 29°C, an attempt was made to use a fan to blow the heat from the interior space under the floor into the room on the second floor. (1) Test date: June 8, 2024, 3:00 PM (2) Temperature: 29℃ (3) Piping used: 50mm vinyl chloride (4) Piping length: 9.5m (5) Thermometer: Thermo recorder (6) Fan: Ohm Electric (150Φ PFS2-150A 170m 3 / H)

[0050] [Result 2] The results were as follows: (1) Underfloor temperature: 19.1℃ (2) 2nd floor indoor temperature: 28.5℃ (3) Air outlet temperature: 23.5℃ (4) Temperature drop: 4.4℃ (23.5-19.1)

[0051] [Consideration 2] Perhaps the insulation of the piping is not so good, but the temperature of the air coming out was 23.5°C. However, since the air was 5°C cooler in a room with a room temperature of 28.5°C, it felt very comfortable.

[0052] Finally, the effects of the heat-shielding house 100 according to the present invention will be described.

[0053] In the heat-shielding house 100 according to this embodiment, one or both sides of the foundation rise portion 22 of the foundation portion 21 are entirely covered with the highly reflective material 6E, and the entire indoor or underfloor surface of the floor portion 23 is provided with the highly reflective material 6C, so that the temperature under the floor remains stable throughout the year and condensation under the floor can be prevented. In addition to condensation under the floor, this heat-shielding house 100 can also prevent condensation on the wall surfaces and inside the walls.

[0054] In the heat-shielding house 100 according to this embodiment, the temperature under the floor remains stable throughout the year, and the first floor floor is kept cool in the summer, providing a cooling effect, while in the winter it provides a heating effect. Therefore, in this heat-shielding house 100, the temperature difference between the underfloor and the room 3A can be reduced even in summer and winter, making the room 3A a very comfortable environment.

[0055] In the heat-shielding house 100 according to this embodiment, heat-exchanged air can be supplied to the first ventilation layer 4 and the second ventilation layer 4 via heat supply means buried underground. Furthermore, in the heat-shielding house 100 according to the present invention, the air in the internal space 21A of the foundation 21 can be used to heat or cool the room 3A, and the air in the internal space 21A can be supplied to the room 3A by a fan after passing through a filter. Therefore, the heat-shielding house 100 can improve the heating and cooling effect of the room 3A.

[0056] In the heat-shielding house 100 according to this embodiment, opening and closing devices using springs made of shape memory alloys are provided at the air intake ports of the first ventilation layer 4 and the exhaust ports of the first ventilation layer 4 and the second ventilation layer 4, respectively. These springs are exposed to the exterior of the exterior member, and the springs of the opening and closing devices sense the outside air temperature to open and close, thereby adjusting the amount of air flowing through the first ventilation layer 4 and the second ventilation layer 4. Therefore, the heat-shielding house 100 according to the present invention can automatically adjust the temperature environment of the room 3A without using a power source or the like, and can automatically prevent condensation from occurring inside the house. As a result, this heat-shielding house 100 is energy-efficient and can provide a comfortable indoor environment that is cool in the summer and warm in the winter.

[0057] Although the present embodiment has been described above, it is possible to select and / or change the configurations given in the above embodiment to other configurations as appropriate without departing from the spirit of the present invention. [Explanation of symbols]

[0058] 1. Heat-shielding structure 2 Exterior materials (exterior walls) 3 Interior materials (interior walls) Room 3A (indoor) 4. Ventilation layer (first ventilation layer, second ventilation layer) 5. Switchgear 6A, 6B, 6D Aluminum foil and other materials with high reflectivity against radiant heat (highly reflective materials) 6C: Aluminum foil and other materials with high reflectivity against radiant heat (indoor heat shielding materials) 6E: Aluminum foil and other materials with high reflectivity against radiant heat (outdoor heat shielding materials) 7. Structural plywood 8 Waterproof paper (waterproof layer) 9 Roof (roofing materials) 10 Base material 11 Opening 12 Metal plate (slide member) 13 Spring 20 building ventilation material 21A Internal space (under the floor) 21 Foundation 22 Foundation standing part 23 Floor (floor material) 24 Joists, etc. 25 Foundation packing 26 pillars (framework) 27 Carpet 30 Solar Panels 31 Intake fan 32 Heat exchanger piping unit 33 Supply nozzle 34 Dust filter 40 filters 41 Supply fan 42 Supply piping 42A Air outlet 45 Ceiling 46 Ceiling Fan 100 Heat-shielding house

Claims

1. A foundation of a building made of concrete and having an internal space; A first material having a high reflectivity against radiant heat, such as aluminum foil, covering the entire area of ​​one side or both sides of the foundation rise portion of the foundation portion; A floor portion constructed above the foundation rising portion; A second material having a high reflectivity against radiant heat, such as aluminum foil, is provided on the entire surface of the indoor side or underfloor side of the floor portion. A heat-shielding house characterized by:

2. A heat-shielding house comprising an exterior member, an interior member constructed inside the exterior member, a first ventilation layer formed between the exterior member and the interior member, and a second ventilation layer formed inside the roof, A heat supply means is buried underground, Outside air is supplied to the heat supply means, and the air that has undergone heat exchange by the heat supply means is supplied to the first ventilation layer and the second ventilation layer. The heat-shielding house according to claim 1.

3. A heat-shielding house that uses the air in the internal space of the foundation for indoor heating or cooling, The air in the internal space is passed through a filter and supplied into the room by a fan.

3. The heat-shielding house according to claim 1 or 2.

4. The airbag has an exterior member, an interior member constructed inside the exterior member, and a first ventilation layer formed between the exterior member and the interior member, a third material having a high reflectivity against radiant heat, such as aluminum foil, is provided inside the exterior member in the first ventilation layer; a fourth material having a high reflectivity against radiant heat, such as aluminum foil, is provided directly on the indoor side of the interior member constituting the room and facing the atmosphere inside the room; and a fifth material having a high reflectivity against radiant heat, such as aluminum foil, is provided on a floor inside the room; the first ventilation layer is formed on the radiation side of the third material, such as aluminum foil, which has a high reflectivity against radiant heat, and outside air is taken in through an air inlet of the first ventilation layer and discharged through an air outlet of the first ventilation layer; An opening and closing device utilizing a spring made of a shape memory alloy is provided at the intake port of the first ventilation layer and the exhaust port of the first ventilation layer, and the spring is exposed to the outside of the exterior member, and the opening and closing device opens and closes when the spring senses the outside air temperature, thereby adjusting the ventilation volume of air flowing through the first ventilation layer. The heat-shielding house according to claim 1.

5. a second ventilation layer formed on the inside of the roofing material, and a sixth material having a high reflectivity against radiant heat, such as aluminum foil, provided on the inside of the roofing material within the second ventilation layer; the second ventilation layer is formed on the radiation side of the sixth material having high reflectivity against radiant heat, such as aluminum foil, and outside air is taken in through an air inlet of the second ventilation layer and discharged through an air outlet of the second ventilation layer; The opening and closing device is provided at the outlet of the second ventilation layer, and the ventilation amount of air flowing through the second ventilation layer is adjusted. The heat-shielding house according to claim 4.

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