Heat-shielding healthy housing

Abstract

To provide a heat-shielding house capable of improving the indoor heating and cooling effect and taking measures against moisture under the floor by supplying geothermal heat from the ground or under the floor to the outer wall, roof and room. [Solution] A heat-shielding house 100 is made of concrete and comprises a foundation 21 of a building having an internal space 21A, an outdoor heat-shielding material 6E covering the entire area of ​​one side or both sides of a foundation rise part 22 of the foundation 21, a floor 23 constructed on the upper side of the foundation 21, and an indoor heat-shielding material 6C provided on the entire surface of the indoor side or underside of the floor 23. This heat-shielding house 100 is energy-efficient and provides a cool indoor environment in summer and a warm indoor environment in winter, allowing people to live comfortably indoors.

Description

[Technical field]

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

[0002] Ventilation holes are usually provided at the foundation rise of a building's slab foundation or strip foundation (for example, Patent Document 1). These ventilation holes are provided to prevent moisture in the space under the floor 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 spread under the floor to prevent moisture (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 underfloor area 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 described that the charcoal or bamboo charcoal has an area and thickness that can absorb moisture during the rainy season, etc., to maintain a comfortable humidity level. [Prior art documents] [Patent documents]

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

[0005] In conventional houses, slab foundations and strip foundations have ventilation holes at the top of the foundation. According to the Building Standards Act, in the case of strip foundations, ventilation holes are required if moisture-proofing measures are not taken on the dirt floor, but are not required for slab foundations. However, currently, most buildings have ventilation holes under the floor as a measure against moisture under the floor.

[0006] There are three main problems with moisture under the floor: (1) Rainwater intrusion First, the rainwater that should be prevented is most likely to get in through ventilation openings caused by strong winds. Secondly, it gets in 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 is no longer a problem. (2) Moisture intrusion The first type is often from ventilation openings under the floor, and there is no way to prevent it. The second type is moisture moving from inside the room to under the floor. This includes steam generated when cooking, and steam generated from gas stoves and kerosene fan heaters, but this is a possible problem that cannot be prevented under the current circumstances. The third type is moisture moving from the ground surface to under the floor, where moisture from the ground surface enters the space under the floor in the form of steam. Currently, this can be dealt with by using 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 the underfloor vents, but the current situation cannot be solved. In this way, most of the problems are caused by the existence of underfloor vents, which were originally considered necessary to prevent moisture.

[0007] Some buildings spread charcoal under the floor to prevent moisture from getting in. 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 can absorb a large amount of moisture that has entered under the floor through the ventilation holes under the floor or through the interior floor.

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

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

[0010] The heat-insulating house of the present invention is a heat-insulating 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 in the ground, 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 passed through a filter and supplied to the room by a fan.

[0012] The heat-shielding house of the present invention 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 reflectance against radiant heat such as aluminum foil is provided inside the exterior member within the first ventilation layer, a fourth material having a high reflectance against radiant heat such as aluminum foil is provided directly on the indoor side of the interior members constituting the room and facing the atmosphere on the indoor side, a fifth material having a high reflectance against radiant heat such as aluminum foil is provided on the floor of the room, the first ventilation layer is formed on the radiation side of the third material having a high reflectance against 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, an opening and closing device using 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, the spring is provided exposed to the outside of the exterior member, and the opening and closing device opens and closes by sensing the outside air temperature, thereby adjusting the ventilation volume of air flowing through the first ventilation layer.

[0013] The heat-shielding house of the present invention is characterized in that it has a second ventilation layer formed on the inside of the roofing material, a sixth material having high reflectivity to radiant heat such as aluminum foil is 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 to radiant heat such as aluminum foil, outside air is taken in through an air intake of the second ventilation layer and exhausted through an exhaust outlet of the second ventilation layer, an opening and closing device is provided at the exhaust outlet of the second ventilation layer, and the amount of air flowing through the second ventilation layer is adjusted. Effect of the Invention

[0014] In the heat-shielding house of the present invention, one or both sides of the foundation rise part of the foundation part having an internal space are entirely covered with a first material having a high reflectance against radiant heat such as aluminum foil, and a second material having a high reflectance against radiant heat such as aluminum foil is provided on the entire surface of the indoor side or underside of the floor part. In this way, the internal space of the foundation is surrounded by a material having a high reflectance against radiant heat such as aluminum foil. Therefore, in the heat-shielding house of the present invention, the temperature under the floor is stable throughout the year, and condensation under the floor can be prevented. In addition, the outdoor heat-shielding material (the first material having a high reflectance against radiant heat such as aluminum foil) applied to the outside of the slab foundation is used by adhering it to the foundation, but because it is thin, it can prevent the intrusion of termites.

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

[0016] In the heat-insulating house according to the present invention, air that has been subjected to heat exchange is supplied to the first ventilation layer formed between the exterior member and the interior member and to the second ventilation layer formed on the inside of the roof via heat supply means buried in the ground. In addition, in the heat-insulating house according to the present invention, 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 through a filter. Therefore, in the heat-insulating house according to the present invention, the heating and cooling effect in the room can be improved.

[0017] The heat-insulating house according to 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, and takes in outside air through an intake port of the first ventilation layer and an intake port of the second ventilation layer, and exhausts it through an exhaust port of the first ventilation layer and an exhaust port of the second ventilation layer. An opening and closing device using a spring made of a shape memory alloy is provided at the intake port of the first ventilation layer and the exhaust ports of the first ventilation layer and the second ventilation layer, respectively. This spring is provided exposed to the outside of the exterior member, and the spring of the opening and closing device opens and closes by sensing the outside air temperature, thereby adjusting the amount of air flowing through the first ventilation layer and the second ventilation layer. Therefore, in addition to being able to enjoy the above-mentioned effects, the heat-insulating house according to the present invention can automatically adjust the indoor temperature environment without using energy such as a power source, and can automatically prevent condensation occurring in the house. As a result, this heat-insulating house is energy-efficient, has a cool indoor environment in summer and a warm indoor environment in winter, and the occupants can live comfortably. [Brief description 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. [Diagram 2] FIG. 2 is a diagram for explaining the heat insulating structure of a heat insulating house according to an embodiment of the present invention. [Diagram 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 insulating structure formed on the roof of a heat insulating house according to an embodiment of the present invention. [Diagram 5] 1 is a diagram showing an opening / closing part made of a shape memory alloy of an opening / closing device provided in a heat insulating house according to an embodiment of the present invention. FIG. [Figure 6] 1A and 1B are diagrams for explaining opening and closing of an opening and closing device for a heat insulating house according to an embodiment of the present invention, in which (a) shows a closed state and (b) shows an open state. [Figure 7] FIG. 2 is a cross-sectional view of a heat-shielding house according to an embodiment of the present invention, in which heat-shielding material is applied to the foundation rise part of a slab foundation and an indoor floor. [Figure 8]FIG. 13 is a diagram for explaining how air is supplied from piping buried underground to the ventilation layer of an exterior wall in a heat-shielding house according to an embodiment of the present invention. [Figure 9] FIG. 1 is a schematic diagram of an air circulation system for taking air from under the floor into the room in a heat-shielding house according to an embodiment of the present invention. [Figure 10] This shows the results of [Test 1] in a heat-insulating house. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0019] DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS 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 use geothermal energy in a building is to use it under the floor, which is in contact with the ground. However, under the floor, ventilation openings are installed at the top of the foundation, and air flows in and out through these openings, so the geothermal energy cannot be used effectively. In addition, under the floor, ventilation openings that were originally installed to prevent moisture under the floor, and in the current situation where equipment and construction methods such as slab foundations and unit baths are being updated, having them installed actually has a negative effect.

[0021] As shown in FIG. 1, the heat-shielding house 100 according to the present invention has a heat-shielding structure 1. The heat-shielding structure 1 has 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 having a high reflectance against radiant heat, such as aluminum foil (hereinafter also referred to as a high-reflectance material), is provided inside the exterior member 2 in the ventilation layer 4. In addition, a high-reflectance material 6B is provided directly on the indoor side of the interior member 3 constituting the room 3A and facing the atmosphere on the indoor side. This high-reflectance 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. Also, a ventilation layer 4 (second ventilation layer 4) is formed on the inside of the roof material 9. Note that heat-shielding tape can be attached to the door 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 the roofing material 9 (Figures 1 and 4). In the heat-shielding house 100 of the present invention, a high reflectance material 6A is attached to the inside of the exterior member 2, and high reflectance materials 6B and 6C are attached to the inside of the interior member 3. In addition, a high reflectance 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 reflectance material 6D.

[0023] In the heat-shielding house 100 according to the present invention, an opening and closing device 5 using a shape memory alloy is 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, and the opening and closing device 5 opens and closes 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 slide-type device using a shape memory alloy. As shown in FIG. 5, this opening and closing device 5 has two rectangular metal plates (slide members) 12 stacked on a base 10, each having a plurality of square openings 11, and a spring 13 made of a shape memory alloy senses the temperature of one of the metal plates 12 and expands and contracts to open and close the openings 11.

[0024] Specifically, as shown in Fig. 6(a), when it cools, the spring 13 expands and the metal plate 12 moves 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 up to a predetermined temperature, the spring 13 contracts and the metal plate 12 moves to the left in the left-right direction X, opening the opening 11 and 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 and is a great energy-saving effect, but conversely, it reduces the heating effect in the winter, resulting in a negative energy-saving effect. A sliding type opening and closing device 5 using a shape memory alloy reduces this negative effect in winter. By closing the intake and exhaust ports of the ventilation layer 4 with this opening and closing device 5, a still air layer is formed within the ventilation layer 4, making it possible to keep the heat insulated house 100.

[0026] The currently used shape memory alloy can be fully closed (closed state) at 18°C ​​and fully opened (open state) at 28°C. This opening and closing temperature can be changed depending on the type of shape memory alloy, and it is not necessary to stick to the above temperature. The opening and closing temperature of the opening and closing device 5 is very important as to what temperature is sensed to activate it, and the heat-shielding house 100 (heat-shielding structure 1) is characterized in that the spring 13 made of shape memory alloy is attached to the outside air side and exposed to the outside. Assuming that the spring 13 made of shape memory alloy is in the ventilation layer 4. When sunlight hits the roof or the outer wall 2 during the daytime at 0°C in midwinter and heats it, the temperature in the ventilation layer 4 rises to 18°C ​​or higher, and the sliding type opening and closing device 5 using the shape memory alloy is in the open state. As a result, the air in the ventilation layer 4 starts to flow, but since the room temperature is about 22°C, the heat in the room continues to flow into the ventilation layer 4, and the sliding type opening and closing device 5 using the shape memory alloy continues to be in the open state, resulting in less energy saving effect. Another advantage of the slide-type opening and closing device 5 using a shape memory alloy is that since the spring 13 senses the outside air temperature and operates, 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 is made of concrete and includes a foundation 21 of a building having an internal space 21A, a material 6E having high reflectivity against radiant heat such as aluminum foil that covers the entire area on one side (entire circumference on one side) or the entire area on both sides (entire circumference on both sides) of a foundation riser 22 of the foundation 21, a floor part (floor material) 23 of the first floor constructed on the upper side of the foundation riser 22, and a highly reflective material 6C provided on the entire indoor side or underside of the floor part 23. This heat-shielding house 100 is a building that utilizes geothermal energy. The internal space 21A of the foundation 21 indicates the underside of the floor part 23.

[0028] Joists 24 are arranged above the foundation riser 22, and the joists 24 are provided on the foundation riser 22 via foundation packing 25. A plurality of pillars (framework) 26 are provided above the joists 24. A carpet 27 is laid on the high reflectivity material 6C provided on the floor 23. A high reflectivity material 6E is attached to one side (outside or inside) or both sides (outside and inside) of the entire circumference of the foundation riser 22 on the outer periphery of the foundation 21, which is a slab foundation or a strip foundation, with an adhesive or double-sided tape. When a foundation packing is used on the top end of the foundation riser 22, the high reflectivity material 6E is raised up to the base and completely sealed so that air does not flow through the gap between the base and the base. When a ventilation hole or a piping through hole is formed in the foundation riser 22, it is installed so as to seal it from the outside. Highly reflective material 6E is usually applied at least to the exterior side of foundation rise portion 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 rise portion 22. Foundation portion 21 is preferably a slab foundation, and it is preferable to apply a waterproof sheet to the underside of foundation portion 21. This provides thorough moisture protection from the ground surface. If the house has a ventilation opening, highly reflective material 6E is installed to cover the ventilation opening.

[0029] The room is filled with water vapor from cooking and water vapor generated by gas stoves and kerosene fan heaters. This moisture flows in the same direction as the room temperature. The internal space 21A under the floor is lower than the room temperature throughout the year, and there is a high possibility that moisture from the first floor will leak into this internal space. In the heat-shielding house 100 according to the present invention, highly reflective material 6C is applied to the entire upper side (above the floor) and lower side (below the floor) of the floor 23 on the first floor. This makes it possible to completely stop the movement of moisture between the indoor side of the first floor and the internal space 21A under the floor.

[0030] In this way, it is possible to prevent moisture from moving around the entire periphery of the foundation riser 22, the first floor floor 23, and the underside of the foundation 21, and the interior space 21A under the floor becomes an environment where moisture and the like hardly penetrates from the outside. Furthermore, since the periphery of the interior space 21A under the floor is covered with the highly reflective material 6E, it is possible to retain the heat of the earth's surface that is transferred in the form of conductive heat from the earth floor.

[0031] The aluminum foil used here is generally mostly a material with high reflectivity against radiant heat (high reflectivity material). However, since it alone has problems of corrosion and strength, it is used as a heat shielding material by stacking multiple layers of various materials. The outdoor heat shielding material used on the outside of the foundation 21 faces the atmosphere and receives sunlight directly, so the surface is made of diffuse reflection specifications so that the reflected light is not irradiated on the surrounding people and hurts their eyes. In addition, since the heat shielding material uses high purity aluminum foil, it will cause corrosion if it comes into contact with alkaline concrete. Therefore, it is necessary to use an alkali-resistant material. The heat shielding material is made of a seven-layer structure consisting of a highly transparent resin layer, aluminum foil, a heat-welded layer, glass cloth, a heat-welded layer, aluminum foil, and a highly transparent resin layer (diffuse reflection structure). The important thing is the aluminum foil, which has a purity of 99.5% or more and a reflectivity of 98%, but since a colored highly transparent resin layer (diffuse reflection structure) is applied to the surface, the final reflectivity is about 90%. The highly reflective 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 applying heat shielding material (high reflectivity material 6E) to the foundation 21, it is usually directly attached with adhesive so that it can withstand strong winds and rainwater. On the other hand, the indoor heat shielding material (high reflectivity material 6C) used for indoor floors is used on the indoor side, so it is fine if it is shiny, but since there is a possibility that acid or alkaline components will adhere to it, it is also made of a material with high chemical resistance. It is made up of seven layers: a highly transparent resin layer, aluminum foil, a heat-sealed layer, nonwoven fabric, a heat-sealed layer, aluminum foil, and a highly transparent resin layer. The heat shielding material used has a reflectivity of 98%, but this is slightly reduced by the highly transparent resin layer on the surface, and the final reflectivity is about 95%. When applying it to an indoor floor, there is no problem if it is simply fixed with double-sided tape. However, since people will be walking on it, it is basic to apply carpet or artificial turf on top of the heat shielding material. Also, when applying it under the floor, it is almost always fixed to the base with a tacker.

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

[0034] In summer, 90% of the radiant heat from outdoors is reflected by the heat shielding material (highly reflective material 6E) applied to 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 under the floor, but this is also absorbed because the ground temperature under the floor is low. Therefore, although the indoor side would generally be warm because it is in the reflective direction, the floor is cooled by geothermal heat, creating a cool environment.

[0035] In winter, radiant heat from outdoors is irradiated at a low angle of 30°C, so the foundation 21 is generally heated, but the heat shielding material (highly reflective material 6E) has a high reflectivity, so little heat is supplied to the internal space 21A under the floor. However, since air below 0°C would normally flow from the ventilation opening under the floor and be cooled, the cold is much less than before. Of course, on the indoor side, heat from the room temperature of about 22°C is transmitted to the underfloor area where the temperature is 14°C, but this also becomes 14°C instead of below 0°C, so the cold is greatly alleviated.

[0036] In this way, 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, and the difference is small. Furthermore, since the perimeter is sealed, no moisture can enter from the surrounding area, so there is no condensation on the pipes under the floor, etc. This completely changes the environment under the floor, where moisture had previously been a problem.

[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 in the ground, and outside air is supplied to the 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 piping or a heat exchange device 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, thereby improving the cooling effect of the room 3A.

[0039] As an example of the overall configuration, as shown in FIG. 8, it has 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 operates by sensing the temperature inside the wall, and is powered by the small solar panel 30. The intake fan 31 is also provided with a dust filter 34. The heat exchanger piping unit 32 is a pipe with a diameter of 50 mm and a total length of about 7 to 8 m, which is bent continuously every 1 m, and the upper part is buried about 5 m underground. The part that comes out into the air is covered with a highly insulating outdoor heat shielding material, and the exhaust side is a trapezoidal thin nozzle so that it can be sucked in over a wide area. In addition, the upper part and the surrounding area of ​​the buried heat exchanger piping unit 32 are covered with a heat shielding material, etc., so as to be as little affected by radiant heat from the sun as possible. 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 layer 4 will be described.

[0041] This system is a facility installed to lower the indoor temperature, and it operates when the temperature inside the wall is approximately 28°C or higher. At temperatures below that, the system stops because it lowers 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, and then exhausted as is. This air has no connection to the living space, so maintenance is relatively easy. In addition, a small solar panel 30 is used for operation. This solar panel 30 only needs to operate when the sun is out and it is hot, so it does not require any other operating energy. However, it is important to be aware that the temperature of the ground outside will change. There is no problem if the heat exchanger piping unit 32 is buried 5m or more underground or installed under a slab foundation, but if it is used in a shallow area underground where the air is exposed, the ground temperature will rise and the system may not be effective. Therefore, in such cases, it is necessary to protect the heat exchanger piping unit 32 from the sun and to surround it with a heat-shielding material for at least 1m around it.

[0042] In the heat-shielding house 100 according to the present invention, the air in the internal space 21A of the foundation 21 is used 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 air 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 air outlet 42A. Furthermore, in the heat-shielding house 100, a small air intake is provided, and the air below the ceiling 45 is directly discharged to the outdoors.

[0044] A cooling and heating 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 internal space 21A is 10°C lower. This cold air under the floor is taken into the room 3A to lower the room temperature. Excess air is returned to the underfloor again from the room 3A via exhaust piping installed under the floor. In other words, heat exchange of the air is carried out throughout the entire underfloor internal space 21A. The reason that the excess air in the room 3A is returned to the underfloor internal space 21A rather than discharged outside is to stabilize the temperature under the floor by reducing the amount of heat exchange.

[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, and by supplying a weak breeze little by little over a long period of time, the strain on the body can be reduced. Another advantage is that by circulating air between under the floor and room 3A, there is no need to introduce air from outside, and no need to take measures against PM2.5 and pollen that are scattered in the air. Another major advantage of this system is that the equipment is simple, so the installation costs are very low.

[0046] [Test 1] Outdoor heat shielding material was applied around the entire perimeter of the building foundation, and indoor heat shielding material was applied to the floor. In addition, heat shielding material was applied to the indoor side of the exterior wall material and roof material around the building, and a ventilation layer was provided inside to allow ventilation. The test was performed 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 outer 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.) inside the ventilation layer (8) In-wall ventilation: Atmosphere

[0047] [Result 1] 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 all day, perhaps due to the season. However, the temperature only changed by about 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. There was little difference in temperature between the different floors, and it was uniform.

[0049] [Test 2] When the air temperature was 29°C, an attempt was made to use a fan to blow heat from the internal space under the floor into the room on the second floor. (1) Test date: June 8, 2024, 3:00 p.m. (2) Temperature: 29℃ (3) Pipe 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] The insulation of the piping may not have been that great, but the temperature of the air coming out was 23.5°C. However, since the air flowed in the room was 28.5°C and was 5°C cooler, it felt very comfortable.

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

[0053] In the heat-insulating house 100 according to this embodiment, one or both sides of the foundation rise part 22 of the foundation part 21 are entirely covered with the highly reflective material 6E, and the highly reflective material 6C is provided on the entire indoor side or underfloor side of the floor part 23, so that the temperature under the floor is stable throughout the year and condensation under the floor can be prevented. In addition to condensation under the floor, this heat-insulating 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 is stable throughout the year, and the floor of the first floor is cool in summer, providing a cooling effect, and in winter, providing 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, air that has undergone heat exchange can be supplied to the first ventilation layer 4 and the second ventilation layer 4 via heat supply means buried in the ground. 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 through a filter. Therefore, in the heat-shielding house 100, the heating and cooling effect of the room 3A can be improved.

[0056] In the heat-insulating house 100 according to this embodiment, an opening / closing device using a spring made of a shape memory alloy is provided at the intake of the first ventilation layer 4 and the exhaust of the first ventilation layer 4 and the second ventilation layer 4, and the spring is exposed to the outside of the exterior member, and the spring of the opening / closing device opens and closes by sensing the outside air temperature, thereby adjusting the amount of air passing through the first ventilation layer 4 and the second ventilation layer 4. Therefore, the heat-insulating 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 occurring in the house. As a result, this heat-insulating house 100 can provide a comfortable indoor environment that is cool in summer and warm in winter with energy saving.

[0057] Although the present embodiment has been described above, it is possible to select from the configurations given in the above embodiment, or to change 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 (inner 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 material) 6E Aluminum foil and other materials with high reflectivity against radiant heat (outdoor heat shielding material) 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 section (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 for a building made of concrete and having an internal space; A first material having a high reflectivity against radiant heat, such as aluminum foil, which covers the entire area of ​​one side or both sides of the foundation rise portion of the foundation part; A floor portion constructed above the foundation rising portion; A second material having a high reflectivity against radiant heat, such as aluminum foil, provided on the entire surface of the indoor side or underside of the floor portion; The present invention 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 reflectance against radiant heat, such as aluminum foil, is provided inside the exterior member in the first ventilation layer, a fourth material having a high reflectance 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 on the indoor side, and a fifth material having a high reflectance against radiant heat, such as aluminum foil, is provided on the floor part of the room, The first ventilation layer is formed on the radiation side of a third material having a high reflectance against radiant heat, such as the aluminum foil, and 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. An opening / 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. The opening / closing device opens and closes when the spring senses the outside air temperature, thereby adjusting the ventilation amount of air flowing through the first ventilation layer. A heat-insulating house characterized by:

2. A heat-insulating house having a second ventilation layer formed on the inside of the roof, A heat supply means having a pipe buried underground is provided, Outside air is supplied to the piping, and the outside air that has been heat exchanged inside the piping by geothermal heat is supplied to the first ventilation layer and the second ventilation layer through the piping. The heat insulating house according to claim 1.

3. A first pipe arranged below the floor portion, and a second pipe connected to the first pipe and leading to the room, A filter and a fan are provided in the first piping, and by operating the fan, air in the internal space passes through the filter and is supplied to the room. The heat insulating house according to claim 1.

4. A roofing material having 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, is 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 a high reflectivity against radiant heat, such as the aluminum foil, and 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. The opening and closing device is provided at an exhaust port of the second ventilation layer, and the ventilation amount of the air flowing through the second ventilation layer is adjusted. The heat insulating house according to claim 1.

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