JP7029840B1 - Exterior wall structure of the building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an outer wall structure of a building capable of suppressing the occurrence of dew condensation on a heat reflecting sheet portion arranged outside a heat insulating material of an outer wall. SOLUTION: The heat reflecting sheet part 22 has a frame part for sandwiching the outer peripheral edge of the heat reflecting sheet part 22 from inside and outside, and the frame part on the inner wall material 69 side and the outer wall material 68 side of the heat reflecting sheet part 22. The heat-permeable waterproof sheet portions 23, 23, which are juxtaposed with each other, are provided, and the base 53 constituting the outer wall 54, the left and right pillars, and the eaves girder 67 are arranged so as to be in contact with each outer surface. It is provided with a wall portion 21. The heat-shielding wall portion 21 is formed with non-ventilated airspaces 26 and 26 surrounded by the frame portion between the heat-reflecting sheet portion 22 and the moisture-permeable and waterproof sheet portions 23 and 23 inside and outside. Since the heat shield wall portion 21 can suppress heat transfer and moisture transfer inside and outside the heat shield wall portion 21, the effect of suppressing the generation of dew condensation is improved. [Selection diagram] Fig. 2

Description

The present invention relates to an outer wall structure in a building such as a house.

As an outer wall structure of a building such as a house, for example, in Patent Document 1, a moisture-permeable waterproof sheet is arranged on the outside of a building frame in which a heat insulating material is arranged between adjacent pillars, and a moisture-permeable waterproof sheet is provided on the outside of the moisture-permeable waterproof sheet. A configuration has been proposed in which a heat shield sheet is disposed via a gap, and an outer wall material is disposed outside the heat shield sheet via the gap. Here, the heat shield sheet shields heat transmitted through the outer wall material, and for example, a heat shield sheet on which aluminum is vapor-deposited is applied. In such a conventional configuration, since voids are formed inside and outside the heat shield sheet, it is possible to suppress the formation of dew condensation inside and outside the heat shield sheet.

Japanese Unexamined Patent Publication No. 2013-92023

However, in the above-mentioned conventional configuration, since the voids on the outside of the heat shield sheet communicate with the outside, the air flowing through the voids has moisture, and the air is the outer surface of the heat shield sheet. Contact. In such a conventional configuration, as described above, it is possible to suppress the formation of dew condensation on the inside of the heat shield sheet due to the gap between the outer wall material and the heat shield sheet, but the air in contact with the outer surface of the heat shield sheet is said. Since it has water content, there is a limit to the effect of suppressing the generation of dew condensation on the outer surface side of the heat shield sheet.

On the other hand, there is also known an outer wall structure in which the heat shield sheet is attached to the outer surface of a structural material such as a heat insulating material. In this configuration, although the heat shield sheet can suppress heat transfer due to radiation, heat conduction occurs between the heat shield sheet and the structural material because it is in contact with the structural material. Therefore, in such a conventional configuration, there is a limit to the effect of suppressing heat transfer by the heat shield sheet.

The present invention proposes an outer wall structure of a building that can improve the effect of suppressing heat transfer between indoors and outdoors and can improve the effect of suppressing the generation of dew condensation on the outer surface side of the heat reflecting sheet portion. be.

The present invention is disposed of the left and right pillars erected on the base at predetermined intervals, the horizontal member passed between the pillars above the base, and the outside of the pillar and the horizontal member. An outer wall structure of a building including an outer wall material and an inner wall material arranged inside the pillar and the horizontal member, which is arranged along the outer wall material and has a rectangular shape having heat reflectivity. The heat-reflecting sheet portion, the rectangular annular frame portion which is disposed on the inner wall material side and the outer wall material side of the heat-reflecting sheet portion and sandwiches the outer peripheral edge of the heat-reflecting sheet portion, and the heat reflection. A rectangular transparent airspace is arranged side by side on the inner wall material side and the outer wall material side of the sheet portion via the frame portion, and forms a non-ventilated airspace surrounded by the frame portion between the sheet portion and the heat reflecting sheet portion. A heat-shielding wall portion having a moisture-proof waterproof sheet portion is provided, and in the heat-shielding wall portion, the outer peripheral edge of the moisture-permeable waterproof sheet portion on the inner wall material side is at least one of the base, the horizontal member, and the left and right pillars. It is an outer wall structure of a building, which is attached to and arranged inside the outer wall material.

Here, the heat shield wall portion may have the configuration of the present invention described above in a state of being constructed as an outer wall of a building (construction completed state). That is, the outer wall structure of the present invention may be constructed by using a preformed heat shield wall portion, or the outer wall structure may be constructed by using a plurality of members for molding the heat shield wall portion. The heat shield wall portion may be formed by the construction.

In such a configuration, the moisture-permeable waterproof sheet portion creates a non-ventilated airspace on the surface of the heat-reflecting sheet portion on the inner wall material side (hereinafter referred to as the inner surface) and the surface on the outer wall material side (hereinafter referred to as the outer surface). Since they are arranged side by side, it is possible to prevent the moisture contained in the air from coming into contact with the inner surface and the outer surface of the heat reflecting sheet portion. Further, the non-ventilated airspace on both the inner and outer sides of the heat-reflecting sheet portion can significantly suppress convection and conduction, which is heat transfer between the inner surface side and the outer surface side of the heat-reflecting sheet portion. In addition, since the heat reflection sheet portion can prevent heat transfer due to radiation, the heat transfer due to convection, conduction, and radiation can be significantly suppressed between the inner wall material side and the outer wall material side of the heat shield wall portion. , Extremely high heat shielding effect can be stably exhibited. In this way, it is possible to prevent moisture from coming into contact with the heat-reflecting sheet portion, and it is possible to significantly suppress heat transfer between the inside and outside of the heat-reflecting sheet portion. The effect of suppressing the occurrence of dew condensation in the airspace) can be significantly improved. Therefore, in the outer wall structure of the present invention, the heat shield wall portion can reliably and stably prevent the transfer of heat and moisture between the inner wall material side and the outer wall material side of the heat shield wall portion. The effect of suppressing the occurrence of dew condensation inside the outer wall structure is extremely high.

As the above-mentioned building having the outer wall structure of the present invention, in the underfloor airspace formed between the floor material exposed in the living area and the underfloor heat insulating material disposed under the floor material, and in the underfloor airspace. An inner wall-side ventilation airspace formed along the vertical direction between the inner wall material that is communicated and exposed to the living area and the wall heat insulating material disposed outside the inner wall material, and is formed through the inner wall material. Therefore, a configuration having a wall floor structure including a slit connecting the inner wall side ventilation airspace and the living area is proposed.

In this configuration, the inner wall side ventilation airspace formed between the inner wall material and the wall heat insulating material is communicated with the underfloor airspace formed under the floor material, and the inner wall side ventilation airspace is slit. Since it is communicated with the living area, air can be circulated between the inner wall side ventilation airspace, the underfloor airspace, and the living area. As a result, for example, when a temperature difference occurs between the inner wall side ventilation airspace, the underfloor airspace, and the living area, air flows between them according to the temperature difference. By circulating the air in this way, it is possible to suppress the accumulation of moisture in the air vented airspace on the inner wall side and the airspace under the floor, so that it is possible to suppress the generation of mold due to the retention of the moisture.

In this configuration, it is preferable that the communication portion that communicates the inner wall side ventilation airspace and the underfloor airspace has an opening area larger than the opening area of the slit. According to this configuration, air can be more easily circulated between the inner wall side ventilated airspace and the underfloor airspace, so that the effect of suppressing the retention of moisture in the inner wall side ventilated airspace and the underfloor airspace is improved. ..

In the above-mentioned building, the exhaust is arranged near the upper end of the inner wall side ventilated airspace or in the upper airspace of the building coupled to the inner wall side ventilated airspace, and draws in the air in the inner wall side ventilated airspace and discharges it to the outside. A configuration with means is proposed.
Here, the exhaust means preferably one that can be converted into an operating state in which air is drawn in and discharged, and an operation stopped state in which the air is not drawn in.

In this configuration, the air that has entered the inner wall side ventilation airspace can be drawn in and discharged through the slit by the exhaust means, and the air in the underfloor airspace can be drawn in and discharged through the inner wall side ventilation airspace. Further, when the air is discharged from the underfloor airspace, a negative pressure is generated in the underfloor airspace, so that the air in the living area can flow to the underfloor airspace through the slit due to the pressure difference. For this reason, the air flow from the living area to the outside through the inner wall side ventilated airspace and the air flow from the living area to the outside through the underfloor airspace and the inner wall side ventilated airspace are discharged to the outside by the exhaust means. There is an air flow. According to this configuration, since such an air flow can be forcibly generated by the exhaust means, it is possible to further suppress the retention of moisture in the inner wall side ventilation airspace and the underfloor airspace, and the effect of suppressing the generation of mold. Can be significantly improved.

In the above-mentioned building, the underfloor is provided with a water flow pipe arranged in the underfloor airspace and a water circulation control means for circulating water in the water flow pipe, and the temperature is changed by circulating water in the water flow pipe. A configuration equipped with a heating / cooling system for heating / cooling a living area by radiant heat transfer action between a floor material and an inner wall material by air in an airspace and air flowing in an airflow on the inner wall side is proposed.

In this configuration, an air-conditioning system that cools and heats by radiant heat transmitted to the living area through the floor material and the inner wall material is provided, and the air-conditioning system sets the area where the radiant heat transfer action is generated to the floor of the living area. Since it is extended to the wall (inner wall material) in addition to the (floor material), the heating / cooling effect is likely to be stably generated in the entire living area, and the efficiency of the heating / cooling can be enhanced. In particular, in the wall-floor structure of the present invention, the air-conditioning effect can be more efficiently exhibited because the air easily flows between the underfloor airspace and the air-ventilated airspace on the inner wall side. Further, since the cooling / heating system of this configuration circulates water in the water flow pipe in the underfloor airspace, it is necessary to supply water to the water flow pipe as compared with the conventionally known configuration of circulating water to the back of the ceiling. It is possible to reduce the size of the pump required for the system. Therefore, according to the configuration of the present invention, there is an excellent advantage that a highly efficient heating / cooling effect can be stably generated by the radiant heat transfer action, and the cost required for installation and the running cost can be reduced.

According to the outer wall structure of the building of the present invention, the heat shield wall portion improves the effect of suppressing heat transfer due to convection, heat transfer, and radiation, so that the heat shield effect between indoors and outdoors is remarkably enhanced. Can be improved. Further, since the effect of suppressing the generation of dew condensation on the inner surface and the outer surface of the heat reflecting sheet portion is improved, the generation of dew condensation can be suppressed inside the outer wall structure, and the generation of mold due to the dew condensation is suppressed. can.

It is a schematic diagram which shows the air-conditioning system 1 which concerns on this invention. It is a vertical sectional view which shows the outer wall 54. It is explanatory drawing 1 which shows the flow of air. FIG. 2 is an explanatory diagram showing an air flow. It is a perspective view which shows a part of the outer wall 54. It is a perspective view which shows by cutting out a part of a heat shield wall part 21. It is an exploded perspective view of the heat shield wall part 21. It is a perspective view which shows a part of the heat shield wall part 91 of the modification.

An embodiment embodying the present invention will be described with reference to the accompanying drawings.
FIG. 1 shows a building 51 according to this embodiment, and exemplifies a general wooden house. As shown in FIGS. 1 and 2, the building 51 is a two-story house, and is erected on a base 53 arranged on a concrete foundation 52 and a predetermined interval on the base 53. A plurality of pillars 65 (see FIG. 5), an eaves girder 67 and a beam (not shown) delivered to the pillar 65, and a roof provided on the eaves girder 67 and the beam via a plurality of rafters 56. It is equipped with 55. Further, a face plate 57 arranged between the rafters 56 is provided along the eaves girder 67. On the base 53, large pulls and joists arranged in a grid pattern are horizontally assembled (not shown), and the first floor material 61 is mounted on the joists and the large pulls are placed. An underfloor heat insulating material 62 is arranged between the joist and the joist. Further, on the flat side of the building 51, an outer wall 54 having the pillar 65, the girder 66 provided to the pillar 65, and the eaves girder 67 provided above the girder 66 is provided. , Arranged on the base 53. On the other hand, on the gable side of the building 51, an outer wall 54 having the pillar 65, the girder 66, and the beam (not shown) provided above the gable 66 is on the base 53. It is arranged in. The outer wall 54 between the flat side and the gable side includes an outer wall heat insulating material 63 arranged between adjacent pillars 65, and an outer wall arranged outside the pillar 65, the gable 66, and the eaves girder 67. A material 68 and an inner wall material 69 arranged inside are provided. The girder 66 and the eaves girder 67 (or the beam) correspond to the horizontal member according to the present invention, and the first floor floor material 61 corresponds to the floor material according to the present invention. The outer wall heat insulating material 63 corresponds to the wall heat insulating material according to the present invention.

A floor beam for the second floor (not shown) is horizontally assembled to the girder 66, and a flat plate-shaped second floor material 71 is mounted on the floor beam. A flat plate-shaped first-floor ceiling material 72 is arranged below the second-floor floor material 71, and a flat-plate-shaped second-floor ceiling material 73 is arranged above the second-floor floor material 71. The first-floor ceiling material 72 and the second-floor ceiling material 73 are assembled to the inner wall material 69. Further, a roof heat insulating material 64 is disposed above the second floor ceiling material 73, and an attic airspace 74 is formed between the second floor ceiling material 73 and the roof heat insulating material 64.

In the building 51, the area surrounded by the first floor material 61, the first floor ceiling material 72, and the inner wall material 69 is the first floor living area 78, and the second floor floor material 71 and the second floor ceiling. The area surrounded by the material 73 and the inner wall material 69 is the second floor living area 79. That is, the first floor material 61, the first floor ceiling material 72, and the inner wall material 69 are exposed in the first floor living area 78, and the second floor floor material 71, the second floor ceiling material 73, and the inner wall material 69 are exposed in the second floor living area 79. .. The living area 78 on the first floor corresponds to the living area according to the present invention.

The main parts of the present invention will be described below.
In the building 51 of this embodiment, as shown in FIGS. 1 to 3, an underfloor airspace 11 is formed between the first floor floor material 61 and the underfloor heat insulating material 62. Further, in the outer wall 54 described above, an inner wall side ventilation airspace 12 is formed between the inner wall material 69, the outer wall heat insulating material 63, and the pillar 65, and the inner wall material 69 is formed by the inner wall side ventilation airspace 12. It is separated from the heat insulating material 63 and the pillar 65. The lower end of the inner wall side ventilation airspace 12 communicates with the underfloor airspace 11, and the upper end communicates with the attic airspace 74. As a result, air can flow between the underfloor airspace 11, the inner wall side ventilation airspace 12, and the attic airspace 74. The floor on the first floor and the outer wall 54 provided with the underfloor airspace 11 correspond to the wall-floor structure according to the present invention.

The inner wall material 69 is formed with an opening of a slit 18 that communicates the inner wall side ventilation airspace 12 and the first floor living area 78. As a result, the air in the living area 78 on the first floor can flow into the airspace 12 on the inner wall side through the slit 18 and flow to the attic airspace 74 (and the airspace 11 under the floor) through the airspace 12 on the inner wall side. In this embodiment, the opening area of the communication port that communicates the inner wall side ventilation airspace 12 and the underfloor airspace 11 is formed to be larger than the opening area of the slit 18. As a result, the air vented airspace 12 on the inner wall side facilitates the circulation of air with the underfloor airspace 11 through the slit 18 as compared with the living area 78 on the first floor.

Further, a ventilation fan 75 is arranged on the outer wall 54 on the wife side constituting the attic airspace 74. The ventilation fan 75 includes a humidity sensor and has a function of automatically operating when the humidity is set to a preset humidity (for example, 60%) or higher. By operating the ventilation fan 75, the air in the underfloor airspace 11 can flow to the attic airspace 74 through the inner wall side ventilation airspace 12, and the air in the first floor living area 78 can flow through the slit 18 to the inner wall. It can flow into the side ventilation airspace 12 and flow to the attic airspace 74 through the inner wall side ventilation airspace 12. In this way, it is possible to create an air flow from the underfloor airspace 11 and the first floor living area 78 to the ventilation fan 75 through the inner wall side ventilation airspace 12. In this embodiment, the ventilation fan 75 is provided so as to be drive-controllable by an operation control device described later, and can be manually operated via the operation control device.

Further, as shown in FIGS. 1 to 4, the outer wall 54 includes a heat shield wall portion 21 disposed between the outer wall material 68, the outer wall heat insulating material 63, and the pillar 65. The heat shield wall portion 21 constitutes the heating / cooling system 1, and is in contact with the outer surface of the pillar 65, the eaves girder 67 (or beam), the girder 66, and the base 53, and is in contact with the outer surface of the outer wall material 68. And are arranged at predetermined intervals. As a result, the outer wall side ventilation airspace 13 is formed between the outer wall material 68 and the heat shield wall portion 21. The outer wall-side ventilation airspace 13 is communicated with the outside of the building 51 at its upper end and lower end, and outside air can be circulated.

As shown in FIGS. 6 and 7, the heat-shielding wall portion 21 has a substantially rectangular heat-reflecting sheet portion 22 and an inner surface of the heat-reflecting sheet portion 22 (as shown in FIGS. Approximately rectangular moisture-permeable waterproof sheet portions 23, 23 arranged side by side on the outer surface (the surface located on the inner wall material 69 side in the completed construction state) and the outer surface (the surface located on the outer wall material 68 side in the completed construction state). The moisture-permeable waterproof sheet portions 23, 23 inside and outside (the inner surface side and the outer surface side) are integrally attached to the heat reflecting sheet portion 22 via the rectangular annular frame portions 24, 24. Here, the frame portion 24 includes long cross members 31 and 31 arranged along the eaves girder 67 (or beam) and the base 53, respectively, and columns arranged on the left and right ends of the outer wall 54 (the frame portion 24). It is composed of long vertical members 32, 32 arranged along the through columns 65, 65, respectively, with the upper and lower ends of the vertical members 32, 32 and the left and right ends of the upper and lower horizontal members 31, 31. Are each consolidated to form a rectangular ring. The frame portion 24, the heat reflection sheet portion 22, and the moisture permeation prevention sheet portion 23 are formed in a rectangular shape having the same outer dimensions, and the upper and lower cross members 31 and 31 of the frame portion 24 are formed. The heat-reflecting sheet portion 22 and the moisture-permeable waterproof sheet portion 23 are attached to the upper and lower side edges, respectively, and the left and right vertical members 32 and 32 of the frame portion 24 are the heat-reflecting sheet portion 22 and the moisture-permeable waterproof sheet portion 23. It is attached to each of the left and right edges of and. In this way, the heat-reflecting sheet portion 22 is sandwiched by the frame portions 24, 24 that are in contact with the inner surface and the outer surface, respectively, and the moisture-permeable waterproof sheet portions 23, 23 are the heat-reflecting sheet portions 22. The heat shield wall portion 21 is formed by being juxtaposed on the inner surface side, the outer surface side, and the frame portions 24, 24, respectively. A non-ventilated airspace 26, 26 surrounded by the frame portion 24 is formed between the heat-reflecting sheet portion 22 and the moisture-permeable and waterproof sheet portions 23, 23 inside and outside the heat-shielding wall portion 21, respectively. Will be done. The non-ventilated airspace 26 is formed in a closed shape, and air cannot enter or leave the outside.

The heat-reflecting sheet portion 22 is composed of a heat-reflecting sheet in which aluminum layers are provided on both sides of a sheet-like base material. For example, heat with high-purity aluminum foil attached to both sides of a polyethylene air cushion sheet. Reflective sheet can be applied. Such a heat-reflecting sheet portion 22 has a property of reflecting (blocking) heat. On the other hand, the moisture-permeable waterproof sheet portion 23 is made of a moisture-permeable waterproof sheet having the ability to pass water and moisture, and for example, a moisture-permeable waterproof sheet using a polyethylene non-woven fabric can be applied. Since conventionally known ones can be applied to the heat-reflecting sheet (heat-reflecting sheet portion 22) and the moisture-permeable waterproof sheet (moisture-permeable waterproof sheet portion 23), detailed description thereof will be omitted.

In such a heat shield wall portion 21, the upper and lower horizontal members 31 and 31 of the frame portion 24 are respectively consolidated to the eaves girder 67 (or beam) and the base 53, and the left and right vertical members 32 of the frame portion 24 are respectively. , 32 are consolidated to the pillars (through pillars) 65 and 65, respectively. As a result, the outer peripheral edge of the moisture-permeable waterproof sheet portion 23 inside the heat-shielding wall portion 21 (on the inner surface side of the heat-reflecting sheet portion 22) has the eaves girder 67 (or beam), the base 53, and the pillar. (Through pillar) Arranged in a state of being in contact with each outer surface of 65, 65.

As shown in FIGS. It is composed of a siding 66, an eaves girder 67 (or a beam), and an outer wall heat insulating material 63. Then, the outer wall side ventilation airspace 13 formed between the outer wall material 68 and the heat shield wall portion 21, the inner wall side ventilation airspace 12 formed between the inner wall material 69 and the outer wall heat insulating material 63, and the heat shield wall portion. The inner and outer non-ventilated airspaces 26 and 26 constituting the 21 are arranged side by side in the inner and outer directions of the outer wall 54.

Further, in the building 51 of the present embodiment, as shown in FIGS. 2 and 4, a heat reflecting sheet portion 37 is arranged under the roof 55 via the roof 55 and the gap 39, and the heat reflecting sheet is provided. The lower edge of the portion 37 is sandwiched between the face plate 57 and the horizontal member 58 that closes the gap 39. Here, the horizontal member 58 is provided along the face plate 57, and the gap 39 is a closed non-ventilated airspace surrounded by the heat reflecting sheet portion 37, the roof 55, and the horizontal member 58. Is formed as. Further, in this embodiment, a moisture permeable waterproof sheet portion 38 is arranged between the roof heat insulating material 64 and the rafters 56. The heat-reflecting sheet portion 37 is composed of the same heat-reflecting sheet as the heat-reflecting sheet portion 22 of the heat-shielding wall portion 21, and the moisture-permeable waterproof sheet portion 38 is a moisture-permeable waterproof sheet of the heat-shielding wall portion 21. It is composed of the same moisture-permeable waterproof sheet as the portion 23.

Further, in the building 51 of the present embodiment, since the heat reflection sheet portion 37 is arranged under the roof 55 through the gap 39, heat transfer through the roof 55 is also prevented. As described above, since the building 51 has a structure that prevents heat transfer from the outside except for the window, it is possible to perform heating and cooling in the living areas 78 and 79 extremely efficiently, and the cost required for the heating and cooling is high. The effect of reducing (electricity charges, etc.) is also high.

On the other hand, the building 51 of the present embodiment is provided with an air-conditioning system 1 capable of heating and cooling the living areas 78 and 79. As shown in FIG. 1, the cooling / heating system 1 includes a flowing water pipe 2 arranged in the underfloor airspace 11 and a circulating water control device (not shown) for supplying and controlling cold water or hot water to the flowing water pipe 2. Be prepared. Here, the circulating water control device includes a geothermal water control temperature device 3 that supplies cold water to the flowing water pipe 2, a solar hot water device 4 that supplies hot water to the flowing water pipe 2, a geothermal water control temperature device 3 and sunlight. A pump 5 that sends water from the hot water device 4 to the water flow pipe 2, a switching valve 6 that switches the water supply source by the pump 5 to one of the geothermal water control temperature device 3 and the solar water hot water device 4, and the pump 5. It is equipped with an operation control device (not shown) that executes drive control and operation control of the switching valve 6, and the operation control device can be operated by an operation panel (not shown) installed in the house. The circulating water control device corresponds to the water circulation control means according to the present invention, and the geothermal water temperature control device 3 corresponds to the water temperature adjusting means according to the present invention. The pump 5, the switching valve 6, and the operation control device correspond to the water supply control means according to the present invention.

The water flow pipe 2 is made of a cross-linked polyethylene pipe, and the outer surface of the water flow pipe 2 is exposed to the air in the underfloor airspace 11. One end of such a water flow pipe 2 is communicated with the geothermal water temperature control device 3 and the solar water temperature device 4 via the pump 5, and the other end is communicated with the geothermal water control temperature device 3 and the solar water temperature device 4. ing. Then, the switching valve 6 is disposed between the other end of the flowing water pipe 2 and the geothermal water temperature control device 3, and between the other end and the solar water heating device 4, and the pump 5 and the pump 5 are provided. The switching valves 6 are arranged between the geothermal water temperature control device 3 and the other end of the solar water temperature device 4.

The geothermal water temperature device 3 is formed by forming a heat-conducting steel pipe in a meandering ring shape, and is buried about 7.5 m underground. The geothermal water temperature device 3 adjusts (heats or cools) the water temperature of the water flowing from the water flow pipe 2 through the switching valve 6 to a predetermined temperature by the heat exchange action with the geothermal heat. Then, the water having the predetermined temperature is sent to the water flow pipe 2 by the pump 5. Here, geothermal heat is generally lower than the outside air temperature in summer and higher than the outside air temperature in winter because it is kept substantially constant throughout the year when it is away from the surface of the earth. That is, according to the geothermal water temperature control device 3, the water flowing from the flowing water pipe 2 can be cooled in the summer and heated in the winter. In this embodiment, the geothermal water temperature control device 3 is buried in the ground under the building 51.

The solar water heating device 4 heats the inflowing water with sunlight and discharges the water, and a conventionally known configuration can be applied. Therefore, the detailed description of the solar water heating device 4 will be omitted.

The pump 5 pumps water from the geothermal water temperature control device 3 and the solar water temperature device 4 to the water flow pipe 2, and has a function of controlling the flow rate to the water flow pipe 2. Further, the switching valve 6 is composed of, for example, a solenoid valve, and is opened and closed by the operation control device. Since a conventionally known configuration can be applied to the pump 5 and the switching valve 6, the description thereof will be omitted.

Further, as shown in FIG. 1, the air-conditioning system 1 of the present embodiment includes an air conditioner 81 and a panel heater 82 arranged in the living area 79 on the second floor. Here, a pipe (not shown) branched from the water flow pipe 2 arranged in the underfloor airspace 11 is joined to the panel heater 82, and the water flow pipe 2 and water are circulated through the pipe. It is possible. An on-off valve (not shown) that can be converted into an open state in which water is circulated from the water flow pipe 2 and a closed state in which water is stopped is provided in this pipe. The circulation of water to the heater 82 can be controlled. The operation of the air conditioner 81, the panel heater 82, and the on-off valve can be controlled by the operation control device described above. Since the conventionally known configurations can be applied to the air conditioner 81, the panel heater 82, and the on-off valve, the description thereof will be omitted.

In the heating / cooling system 1 of the present embodiment, the operation control device (not shown) is operated to drive the pump 5, and the geothermal water temperature control device 3 or the solar water temperature device 4 and the flowing water pipe 2 are used. Circulate water. As a result, the living areas 78 and 79 of the building 51 are cooled and heated.

More specifically, in the summer, the geothermal water temperature control device 3 and the water flow pipe 2 are communicated with each other by the switching valve 6, and the pump 5 is driven to connect the geothermal water control temperature device 3 and the water flow pipe 2. Circulate water. The air in the underfloor airspace 11 is cooled by the water flowing through the flowing water pipe 2, and the temperature of the first-floor living area 78 rises (the room temperature rises due to the amount of heat incident from a window or the like) due to the radiant heat generated by this air through the first-floor floor material 61. ) Can be suppressed, and the resident in the first floor living area can get a feeling of coldness. Further, by operating the ventilation fan 75 (or automatically operating at a humidity of 60% or more), the air in the first floor living area 78 enters the inner wall side ventilation airspace 12 through the slit 18 of the inner wall material 69. And rise. Here, since the inner wall side ventilation airspace 12 is provided inside the heat shield wall portion 21 and the outer wall heat insulating material 63, it is possible to block the heat (heat of the outside air) transmitted from the outer wall material 68 as described later. .. Therefore, the air in the ventilated airspace 12 on the inner wall side rises without being warmed by the heat from the outside. Even with the air in the air vented airspace 12 on the inner wall side, the temperature rise between the first floor living area 78 and the second floor living area 79 can be suppressed by the radiant heat through the inner wall material 69, and the residents in these living areas 78 and 79 feel cold. Can be obtained. Furthermore, in the summer, the air conditioner 81 and the panel heater 82 (which opens the on-off valve) are driven to cool the second floor living area 79, and the temperature difference between the first floor and the second floor caused by this causes the second floor living. The cold air in the area 79 descends to the living area 78 on the first floor. The air in the first floor living area 78 cooled in this way also flows into the inner wall side ventilation airspace 12 through the slit 18. As described above, according to the heating / cooling system 1 of the present embodiment, in the summer, the room temperature rise is suppressed by the radiant heat transfer action, and air is circulated from the second floor living area 79 to the inner wall side ventilated air area 12 to construct the building. The entire living area 78, 79 of the object 51 can be cooled.

On the other hand, in winter, the switching valve 6 is used to communicate the solar hot water device 4 and the water flow pipe 2, and the pump 5 is driven to supply water to the solar hot water device 4 and the water pipe 2. Circulate. As a result, the water warmed by the solar water heating device 4 flows into the flowing water pipe 2, and the air in the underfloor airspace 11 is warmed. Then, the heat can be transmitted to the resident in the first floor living area 78 by the radiant heat generated by the air through the first floor material 61. Further, since the warmed air in the underfloor airspace 11 rises in the inner wall side ventilated airspace 12 communicating with the underfloor airspace 11, the radiant heat from the air in the inner wall side ventilated airspace 12 causes the first floor. The heat can be transmitted to the residents in the living area 78 and the second floor living area 79. Further, by operating the ventilation fan 75, the air in the underfloor airspace 11 can be stably raised in the inner wall side ventilation airspace 12, and the radiant heat transfer action is more effectively performed through the inner wall material 69. obtain. In addition, by operating the ventilation fan 75, the air in the living area 78 on the first floor can be made to flow into the ventilation airspace 12 on the inner wall side through the slit 18, and the air can be easily circulated. Furthermore, as described above, the building 51 of the present embodiment has a structure that prevents heat transfer from the outside by the structure of the heat shield wall portion 21 of the outer wall 54 and the heat reflection sheet portion 37 provided under the roof 55. Therefore, it is highly effective in blocking cold air from the outside in winter. Therefore, in winter, the entire living area 78, 79 of the building 51 can be heated by the radiant heat transfer action via the first floor material 61 and the inner wall material 69.

In addition, in the heating / cooling system 1 of the present embodiment, the operation control device has a timer function, and the timer function controls the drive and stop of the pump 5, so that more efficient heating can be performed. You can do it. Specifically, in winter, the timer function sets the operation time (for example, 9:00 am) and the operation stop time (for example, 4:00 pm) of the pump 5 that circulates hot water from the solar water heater 4. .. Further, the solar hot water device 4 is provided with a water temperature sensor, and the operation control device controls the start and stop of the operation of the pump 5 according to the information input from the water temperature sensor (water temperature of the solar hot water device 4). Has a water temperature operating function. For example, when the water temperature sensor becomes 41 degrees or less, the operation / stop control of the pump 5 is performed, while when the water temperature sensor becomes 44 degrees or more, the operation start control of the pump 5 is performed. In this way, the combination of the timer function and the water temperature operation function enables efficient heating operation, and in addition, by controlling the operation of the air conditioner 81, super energy-saving heating operation is performed in the entire living area 78 and 79. Can be done for 24 hours.

In this embodiment, in winter, the on-off valve of the pipe that connects the water flow pipe 2 and the panel heater 82 is closed, and the panel heater 82 is not operated.

In the building 51 of this embodiment, as described above, the underfloor airspace 11 and the inner wall side ventilation airspace 12 of the outer wall 54 and the attic airspace 74 in which the ventilation fan 75 is arranged are communicated with each other, and the slit 18 of the inner wall material 69 is further communicated. Since the living area 78 on the first floor is communicated with the ventilation airspace 12 on the inner wall side, air can flow in and out of each other, and the air in the ventilation airspace 12 on the inner wall side can be operated by the operation of the ventilation fan 75. And the air in the underfloor airspace 11 can be drawn in and forcibly discharged to the outside. As a result, it is possible to prevent moisture from staying in the air vented airspace 12 on the inner wall side and the airspace 11 below the floor. In particular, in this embodiment, the ventilation fan 75 is provided with a humidity sensor and automatically operates at a predetermined humidity, so that the retention of the humidity can be suppressed more effectively. More specifically, when the air in the inner wall side ventilation airspace 12 is discharged by the operation of the ventilation fan 75, the air in the underfloor airspace 11 flows into the inner wall side ventilation airspace 12, and the living area 78 is passed through the slit 18. Air is drawn in. Then, when air flows from the underfloor airspace 11, a negative pressure is generated in the underfloor airspace 11, so that it is considered that the air in the living area 78 also flows to the underfloor airspace 11 through a part of the slits 18 due to the pressure difference. In particular, in this embodiment, as described above, since the opening area of the communication port that communicates the inner wall side ventilation airspace 12 and the underfloor airspace 11 is larger than the opening area of the slit 18, the opening area is larger than that of the slit 18. A part of the inflowing air flows into the underfloor airspace 11 according to the pressure difference, and makes it easy to generate an air flow that flows into the inner wall side ventilation airspace 12 through the underfloor airspace 11.

For these reasons, the flow of air discharged to the outside by the ventilation fan 75 of the roof airspace 74 through the airspace 12 on the inner wall side from the living area 78, and the air flow from the underfloor airspace 11 (including the air flowing in from the living area 78) to the inner wall side. There is a flow of air discharged to the outside by the ventilation fan 75 through the ventilation airspace 12. By forcibly generating such a flow in the airspace by the operation of the ventilation fan 75, it is possible to further suppress the retention of moisture in the underfloor airspace 11 and the inner wall side ventilation airspace 12.

Further, the outer wall 54 of the building 51 can block heat transfer inside and outside the heat shield wall portion 21 by the heat shield wall portion 21. Here, the heat shield wall portion 21 can prevent heat transfer due to radiation inside and outside the heat reflection sheet portion 22 by the heat reflection sheet portion 22. In addition, the inner and outer surfaces of the heat-reflecting sheet portion 22 are separated into outside air and indoor air (inside the outer wall 54) by the moisture-permeable waterproof sheet portions 23, 23 on both the inner and outer sides and the non-ventilated airspaces 26, 26. Since it is configured so as not to come into contact with each other, heat transfer due to convection and conduction can be blocked between the inner surface and the outer surface of the heat reflective sheet portion 22. Therefore, heat transfer due to convection, conduction, and radiation can be blocked inside and outside the heat shield wall portion 21, and external heat is transferred from the outer wall material 68 to the inner wall side ventilation airspace 12 (and living areas 78, 79). Can be significantly suppressed. In addition, the moisture permeable waterproof sheet portions 23, 23 juxtaposed via the non-ventilated airspaces 26, 26 can prevent the moisture contained in the outside air of the outer wall side ventilated airspace 13 from touching the heat reflecting sheet portion 22. At the same time, it is possible to prevent the moisture contained in the air in the inner wall side ventilation airspace 12 from touching the heat reflecting sheet portion 22. In this way, the heat shield wall portion 21 can prevent heat transfer and moisture passage in the inward and outward directions.

As described above, in the building 51 of the present embodiment, the heat shield wall portion 21 (and the outer wall heat insulating material 63) of the outer wall 54 allows heat transfer and moisture passage between the inner wall side ventilation airspace 12 and the outer wall side ventilation airspace 13. And, as described above, the retention of moisture in the inner wall side ventilation airspace 12 can be suppressed, so that the occurrence of dew condensation on the inner wall side ventilation airspace 12, the inner wall material 69, and the outer wall heat insulating material 63 can be suppressed. In other words, in the outer wall 54, the heat shield wall portion 21 has the effect of preventing heat transfer and moisture passage of the heat shield wall portion 21 by the non-ventilated airspaces 26 and 26, and the inner wall side ventilated airspace 12 produces moisture. It is possible to suppress the retention of moisture and suppress the retention of moisture in the ventilation airspace 13 on the outer wall side. As described above, the outer wall 54 has a structure in which four airspaces of the inner wall side ventilated airspace 12, the non-ventilated airspace 26 and 26 of the heat shield wall portion 21, and the outer wall side ventilated airspace 13 are provided side by side in the inner and outer directions. The action and effect of suppressing the occurrence of dew condensation can be exhibited extremely high.

Further, as described above, since it is possible to suppress the accumulation of moisture in the underfloor airspace 11, it is also possible to suppress the occurrence of dew condensation in the underfloor airspace 11. Further, in the present embodiment, as described above, since the heat reflection sheet portion 37 is arranged under the roof 55 via the sealed gap 39, the heat and humidity transmitted indoors through the roof 55 can be obtained. Can be suppressed. Furthermore, in the attic airspace 74, air is discharged by the operation of the ventilation fan 75, and the retention of moisture is suppressed. Therefore, it is possible to suppress the occurrence of dew condensation in the attic airspace 74.

As described above, since the building 51 is a building having extremely high airtightness having an extremely high effect of suppressing heat and moisture (moisture) from being transmitted indoors from the outer wall 54 and the roof 55, the above-mentioned dew condensation occurs. The effect of suppressing is extremely high, and the generation of mold due to the dew condensation can be suppressed. Further, due to such high airtightness, the cooling / heating effect of the heating / cooling system 1 can be exhibited stably and with high efficiency.

Further, in such a configuration of the present embodiment, the flowing water pipe 2 is arranged in the underfloor airspace 11, and the outer surface of the flowing water pipe 2 is exposed to the air in the underfloor airspace 11, and the heat is transmitted from the flowing water pipe 2. Thermal action occurs through the air in the underfloor airspace 11. As a result, it is possible to suppress the formation of dew condensation on the first floor floor material 61 and the underfloor heat insulating material 62, and it is possible to suppress the generation of mold due to the dew condensation.

The present invention is not limited to the above-described embodiment, and can be appropriately modified without departing from the spirit of the present invention.
For example, in the embodiment, the configuration is provided with the solar hot water device 4, but the configuration may not be provided with the solar hot water device 4. In this configuration, hot water is circulated from the geothermal water temperature control device 3 to the running water pipe 2 in the winter as well as in the summer.

Further, in the embodiment, the geothermal water temperature device 3 is buried in the ground under the building 51, but even if it is buried in the ground of another place (for example, a garden) in the site. good.

Further, the heat-shielding wall portion constituting the outer wall may be configured such that another functional sheet portion is interposed between the heat-reflecting sheet portion and the moisture-permeable waterproof sheet portion. For example, as shown in FIG. 8, a gypsum board (corresponding to the above-mentioned functional sheet portion) 92 having a predetermined thickness having fire resistance is arranged on a frame portion 24 arranged on the outer wall material side of the heat reflective sheet portion 22. It can also be a set configuration. Since the gypsum board 92 has fire resistance, the heat shield wall portion 91 having such a configuration is suitably used in a building in which a galvalume steel plate is used as the outer wall material. As the functional sheet, a soundproof sheet, a radio wave shielding property, or the like can be applied.

1 Air-conditioning system 2 Flow pipe 3 Geothermal water temperature control device (water temperature adjustment means)
4 Solar water heater 5 Pump 6 Switching valve 11 Underfloor airspace 12 Inner wall side ventilation airspace 13 Outer wall side ventilation airspace 18 Slit 21 Heat shield wall part 22,37 Heat reflection sheet part 23,38 Moisture permeable waterproof sheet part 24 Frame part 26 Non Ventilated airspace 31 Horizontal material 32 Vertical material 39 Void 51 Building 52 Foundation 53 Base 54 Outer wall 55 Roof 56 Rafters 57 Face door plate 58 Horizontal material 61 First floor floor material (floor material)
62 Underfloor insulation 63 Outer wall insulation (wall insulation)
64 Roof insulation 65 Pillars 66 Bodice 67 Eaves girder 68 Outer wall material 69 Inner wall material 71 Second floor floor material 72 First floor ceiling material 73 Second floor ceiling material 74 Attic airspace 75 Ventilation fan 78 First floor living area (living area)
79 Second floor living area 81 Air conditioner 82 Panel heater 91 Heat shield wall 92 Gypsum board

Claims (1)

The left and right pillars erected on the base at regular intervals,
The horizontal lumber passed between the pillars above the base,
The outer wall material arranged on the outside of the pillar and the horizontal member, and
It is an outer wall structure of a building including the inner wall material arranged inside the pillar and the horizontal member.
A rectangular heat-reflecting sheet portion that is arranged along the outer wall material and has heat-reflecting properties, and a heat-reflecting sheet portion.
A rectangular annular frame portion that is disposed on the inner wall material side and the outer wall material side of the heat reflecting sheet portion and sandwiches the outer peripheral edge of the heat reflecting sheet portion, respectively.
A rectangle that is juxtaposed on the inner wall material side and the outer wall material side of the heat-reflecting sheet portion via the frame portion and forms a non-ventilated airspace surrounded by the frame portion between the heat-reflecting sheet portion and the frame portion. Equipped with a heat shield wall part having a moisture permeable waterproof sheet part in shape,
The heat shield wall portion is
The outer peripheral edge of the moisture-permeable waterproof sheet portion on the inner wall material side is attached to at least one of the base, the horizontal member, and the left and right pillars, and is disposed inside the outer wall material. The outer wall structure of the building.

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