JP5946047B2 - Local heat insulation structure of buildings - Google Patents

Description

  The present invention relates to a local heat insulating structure for a building that insulates the interior of a building by a wooden frame construction method, a frame wall construction method, or the like in an individual space.

  In recent years, the number of houses built with high airtightness and high thermal insulation is increasing. In such a house, a plate-shaped heat insulating material, foamed resin, glass wool, or the like is attached to a wall, floor, roof, or the like in contact with the outside air in order to ensure heat insulation. For example, in the house 10 by the wooden frame construction method shown in FIG. 10, a base 12 is provided on a cloth base 11, a column (not shown) is provided on the base 11, and beams 13 and girders 15 are provided on the first and second floor portions. Each is constructed vertically and horizontally. An inner wall plate 20, which is a wall base material on the indoor side, is attached to the inner side of the frame assembly such as the beam 13, the girder 15, and the column, and a wallpaper (not shown) or the like is pasted and finished. The outer wall base material 16 of the structural plywood provided with the heat insulating material 14 is attached to the outdoor side of the column and the beam 13, and the outer wall material 18 is attached to the outer side of the outer wall base material 16 via the trunk edge to ventilate. It is made possible.

  Furthermore, a heat insulating material 17 is provided between the large pulls 21 on the floor 22 of the first floor portion in the room to insulate the space under the floor, and a floor base material 24 is placed on the large pulls 21 via joists 23. It is laid. On the floor base material 24 of the structural plywood, a tatami mat 25 and other floor finishing materials are provided. A ceiling material 26 is provided in the ceiling portion of the room on the first floor.

  In the floor 22 of the second floor, a floor base material 24 is laid on a joist 23 arranged on the beams 13 and girders 15 on the first floor, and a floor finishing material 28 is provided thereon. In addition, a ceiling material 26 is provided in the ceiling portion of the room on the second floor, and a heat insulating material 27 is provided on the outer surface of the ceiling material 26 to insulate the ceiling from the back. A rafter 29 is erected on the roof 31 of the second floor portion, and a roof base material 19 of structural plywood is provided thereon.

  Such a house with high airtightness and high heat insulation performance has high airtightness inside and outside the house in order to ensure heat insulation, and therefore requires ventilation in each room and indoors and outdoors, as disclosed in Patent Document 1. In addition, a ventilation means such as a vent that penetrates between the rooms of the house is provided to ventilate each room, and a structure to ventilate the interior and exterior using a ventilation device provided on the roof or wall ing.

  In addition, a structure as disclosed in Patent Document 2 has been proposed as a building that performs air conditioning throughout the building without the need for a ventilation duct that spans between living rooms in a house, and performs efficient cooling and heating. This building performs cooling and heating of adjacent rooms by means of heat conduction means in the partition between the rooms. As the heat conduction means here, in the example of Patent Document 2, a fan device, aluminum, copper, etc. The material with high thermal conductivity is mentioned. Thereby, even if it does not provide the air duct for whole building air conditioning, it is comprised so that the air conditioning of an adjacent room can be performed.

  In addition, as disclosed in Patent Document 3, a plurality of rooms and passages in a building are surrounded by a heat insulating sheet, a static air layer is provided between the heat insulating material on the back of the ceiling and the heat insulating sheet, There has been proposed a building in which a thermal insulation sheet is provided between a material and a finishing material to form a static air layer. Similarly, Patent Document 4 proposes a structure in which an aluminum foil or the like that reflects radiant heat and a static air layer are formed on the inner side of an outer wall of a building to achieve heat insulation and heat insulation inside and outside the building.

  Patent Document 5 discloses a building having an individual heat insulating structure for a room in a building, in which each room of the building is covered with a moisture-proof and heat-reflective sheet and an outside air passage is formed around the room. Things have also been proposed. Furthermore, as disclosed in Patent Document 6, a heat-shielding panel used for a partition wall, a structural panel, a door, etc., which is provided with a heat-shielding material and has an air passage and a vent. There are also things.

JP-A-10-237970 JP 2009-127965 A Utility Model Registration No. 3189532 JP 2007-239429 A JP 2006-249769 A Japanese Utility Model Publication No. 62-135708

  Conventional high airtight high heat insulation houses as shown in Patent Document 1 and FIG. 10 have a heat insulation structure in the wall of the outer part of the entire house to achieve heat insulation from the outside. In each case, the room was simply partitioned by an indoor wall or a door, a fence, etc., and there was no thermal insulation heat insulation performance between the rooms. Therefore, it is necessary to always perform air conditioning in the entire house, and even when only air conditioning in individual rooms is sufficient, much energy is consumed and the entire building is air-conditioned. Further, even when individual air conditioning is performed for each room by an air conditioner or the like in such a high airtight and highly insulated house, there is a large amount of heat transfer between adjacent rooms, resulting in a reduction in air conditioning efficiency.

  Moreover, in the case of the structure of the house disclosed in Patent Document 2, the heat transfer between adjacent rooms is facilitated to heat and cool a plurality of rooms. Even when it is desired to heat and cool only the other room, the heat is transferred to the next room, and the cooling and heating efficiency is deteriorated.

  Furthermore, the thing which provided the thermal insulation sheet | seat as disclosed by patent documents 3 and 4 between the outer wall and the inner wall of a building, the space which the thermal insulation sheet | seat faced between several adjacent rooms in a building, and Even if a closed space of static air is formed on the upper and lower floors, heat exchange is performed by convection and heat radiation in the large communication space, and the heat insulation and heat insulation performance deteriorates. It was. Therefore, as in the case described above, even when only a part of the rooms is to be air-conditioned, the heat is transferred to the adjacent or upper rooms, resulting in poor air-conditioning efficiency. Are not considered.

  Further, in the case of the structure provided with the heat shield sheet disclosed in Patent Document 5, since the air passage is formed outside the heat shield sheet and the outside air passes, the outer space of the heat shield sheet and the surface of the heat shield sheet are outside. It becomes close to the temperature, and the heat insulation performance is significantly reduced. Therefore, for example, even in the case of heating, the outdoor temperature of the heat shield sheet decreases to near the outside air temperature, heat is conducted through the heat shield sheet and the wall surface, and the wall surface temperature on the indoor side is lowered. The heat insulation performance between the walls is remarkably lowered, the room temperature is lowered due to the low wall surface temperature, and the sensible temperature in the room is also lowered because there is little radiant heat from the wall surface to the indoor side. In addition, the temperature difference between the air passage and the indoor wall may cause condensation. Similarly, the heat shield panel disclosed in Patent Document 6 is also provided with a ventilation path and a vent in the panel, and the heat shield heat insulation performance is significantly impaired, and has the same drawbacks as described above.

  The present invention has been made in view of the above-mentioned problems of the prior art, and in a building having high airtightness and high heat insulation performance, the heat transfer of individual rooms is suppressed and the heat insulation heat insulation performance is improved. It aims at providing the local heat insulation structure of the building which can raise air-conditioning efficiency more as a whole.

The present invention provides a heat shield sheet that shields the propagation of radiant heat on the constituent material of the wall, ceiling, and floor surrounding one room space of a substantially hexahedron constituting a part of the interior space of a building, and the heat shield sheet is the indoor side of the structure material facing said one room space, arranged so as to cover the entire side surfaces except for the opening of the one room space, the one room space that faces the heat insulating sheet A closed still air layer hermetically sealed for each side surface is provided on each side surface, and the wall is an outer wall base material located outside the building, and an indoor wall of the building, Between the outer wall of the object and the outer wall base material is formed so as to be able to ventilate through a trunk edge, and a heat insulating material is provided almost on the indoor side surface of the outer wall base material , and on the indoor side of the heat insulating material. The heat shield sheet is provided, and a room is provided on the indoor side of the heat shield sheet. Of the inner wall plate is located, an indoor side of the heat insulating material, said closure stationary air layer is provided on both the exterior side and the interior side of the heat insulating sheet, on the back side of each side wall of the chamber wall a pair of said heat insulating sheet is also provided, said closure stationary air layer is provided on both the exterior side and the interior side of each said heat shield sheet of the indoor wall, between the pair of heat insulating sheet and two outer The closed static air layer forms the closed static air layer, and the thermal insulation sheet provided on the ceiling and the floor is also provided with the closed static air layer facing the ceiling, and the ceiling located in the attic of the ceiling. A heat insulating material is provided on the outdoor side of the heat shield sheet provided, the closed static air layer is provided on the indoor side, and a heat insulating material is provided on the outdoor side of the heat shield sheet on the first floor of the floors. said closure stationary air layer is provided on the interior side is provided, the one part The entire surface of the space is the local heat insulating structure of the building is surrounded by said heat insulating sheet the closure stationary air layer.

The heat insulating sheet provided on the floor is connected to the heat insulating sheet or overlaps an end portion of another heat insulating sheet from the end portion of the heat insulating sheet provided on the outer wall base material. in which is arranged inside.

  The heat shield sheet and the closed still air layer are provided inside a fitting provided in the opening formed in a part of the indoor wall.

  The heat shield sheet. The closed still air layer is preferably provided on both sides. Furthermore, it is good if the heat shield sheet is provided inside the roof of the building.

  The local heat insulating structure of the building of the present invention is a simple structure in a highly airtight and highly heat insulating house, etc., and improves the heat insulating effect by suppressing heat transfer due to infrared rays and heat conduction between outdoors and individual rooms. As a whole, the cooling and heating efficiency can be further increased. In particular, the heat shield sheet and the closed still air layer block the movement and propagation of heat inside and outside the room, suppress the temperature difference between the walls, increase the cooling and heating effect, and reduce the cooling and heating effect due to radiant heat due to the wall temperature difference Can also be suppressed. As a result, a comfortable air-conditioning environment can be obtained, and the cost of heating and cooling the building can be greatly reduced, contributing to a reduction in energy costs and, in turn, reducing the consumption of fossil fuels and reducing the deterioration of the global environment. It also contributes to this.

It is a fragmentary longitudinal cross-section which shows the local heat insulation structure of the house by the wooden frame construction method which is the building of 1st Embodiment of this invention. It is a schematic exploded perspective view which shows the example of the thermal insulation sheet | seat of 1st embodiment of this invention. It is a fragmentary longitudinal cross-section which shows the local heat insulation structure in the house of 1st embodiment of this invention. It is a top view of the room | chamber interior of the 1st floor part in the house which provided the local heat insulation structure of 1st embodiment of this invention. It is a fragmentary longitudinal cross-section which shows the local heat insulation structure of the fitting in a house of 2nd embodiment of this invention. It is a fragmentary longitudinal cross-section which shows the roof which provided the local heat insulation structure of 3rd embodiment of this invention. It is a fragmentary longitudinal cross-section which shows the roof of the other structure which provided the local heat insulation structure of 3rd embodiment of this invention. It is a fragmentary longitudinal cross-section which shows the local heat insulation structure of the house by the frame wall construction method which is the building of 4th Embodiment of this invention. It is a fragmentary longitudinal cross-section which shows the local heat insulation structure in the house of 4th embodiment of this invention. It is a fragmentary longitudinal cross-section which shows the house by the wooden frame construction method provided with the conventional heat insulation structure.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. 1 to 4 show a first embodiment of the present invention. A building of this embodiment is a house 30 by a wooden frame construction method, and a foundation 12 is provided on a cloth foundation 11, and the foundation 11 is shown. A column (not shown) is erected on the top, and beams 13 and girders 15 are installed vertically and horizontally on the first and second floor portions, respectively. An inner wall plate 20, which is a wall base material on the indoor side, is attached to the inner side of the frame assembly such as the beam 13, the girder 15, and the column, and a wallpaper (not shown) or the like is pasted and finished. An outer wall base material 16 of a structural plywood provided with a heat insulating material 14 is attached to the outdoor side of the columns and beams 13, and an outer wall material 18 is attached to the outside of the outer wall base material 16 via a trunk edge, It is formed so as to be able to vent on the back surface of the outer wall material 18.

  Furthermore, a heat insulating material 17 is provided between the large pulls 21 on the floor 22 of the first floor portion in the room to insulate the space under the floor, and a floor base material 24 is placed on the large pulls 21 via joists 23. It is laid. On the floor base material 24 of the structural plywood, the tatami mat 25 and the floor finishing material 28 shown in FIGS. 1 and 3 are provided. A ceiling material 26 is provided in the ceiling portion of the room on the first floor.

  In the floor 22 of the second floor, a floor base material 24 is laid on a joist 23 arranged on the beams 13 and girders 15 on the first floor, and a floor finishing material 28 is provided thereon. A ceiling material 26 is provided in the ceiling portion of the room on the second floor, and a heat insulating material 27 is provided on the outer surface of the ceiling material 26 to insulate the ceiling from the back. A rafter 29 is erected on the roof 31 of the second floor portion, and a roof base material 19 of structural plywood is provided thereon.

  In the house 30 of this embodiment, as shown in FIGS. 1 and 3, a heat shielding sheet 32 is laid on the entire surface under the floor 21 on the indoor side of the base 12 and the heat insulating material 17. For example, as shown in FIG. 2A, the heat shield sheet 32 is provided with aluminum foil 34 on the front and back, a pair of polyethylene (PE) sheets 35 are disposed inside the aluminum foil 34, and polyethylene between the polyethylene sheets 35. It is a sheet-like heat shielding material provided with a cloth material 33 made of fibers. The heat shield sheet 32 shields infrared rays, which are radiant heat, and suppresses heat transfer and heat exchange by infrared radiation. In the present invention, heat shield is used to cut off radiant heat, and a heat shield material is also broadly defined. It will be described as a heat insulating material. In this embodiment, by making the heat shield sheet 32 have a plurality of layer structures, it is possible to block radiant heat and suppress the movement of heat due to heat conduction, and to have higher heat shield heat insulation performance. In addition, the heat shielding sheet 32 may be a sheet material having fine through holes and having moisture permeability, or may have no through holes. Further, the heat shield sheet 32 may have a three-layer structure shown in FIG. 2B, and in this case, has a structure composed of front and back aluminum foils 34 and a polyethylene sheet 35. In addition, a sheet material having a three-layer structure of an aluminum foil 34, a polyethylene sheet 35, and a cloth material 35, or a one-layer or two-layer structure may be used.

  In the house 30 of this embodiment, as shown in FIG. 1 and FIG. 3, an end portion is connected to the heat shield sheet 32 laid under the floor or when another heat shield sheet 32 is added from the end portion. A heat shield sheet 32 is attached to the inside of the heat insulating material 14 of the outer wall base material 16 and outside the inner wall plate 20 so as to overlap each other. The heat shield sheet 32 is attached to the entire inner surface of the outer wall base material 16 and is provided so as to wrap the house 30. Further, a heat shielding sheet 32 is also laid on the entire back surface of the ceiling material 26 of the first and second floor portions of the house 30. As shown in FIG. 3, as shown in FIG. 3, a heat shielding sheet 32 is also provided on the back side of the inner wall plate 20 of each room 36 on the inner side of the interior wall 38 between the rooms 36, which is one hexahedral space of the house 30. Each is pasted. As a result, a hexahedral space in each room 36 of the house 30 is surrounded by the heat shield sheet 32 so that each side surface of the hexagon is covered by each side surface. In particular, by providing the heat shielding sheets 32 inside the surfaces on both sides of the interior wall 38 between the rooms 36, a higher heat shielding effect can be obtained, and the heat insulation performance between the rooms 36 can be enhanced. .

  Further, as shown in FIGS. 1 and 3, the house 30 of this embodiment includes a space between the heat shield sheet 32 and the floor base material 24 laid under the floor. A closed still air layer 39 of a thin closed space surrounded by is formed. The four side edges of the closed still air layer 39 are closed by bending the heat shield sheet 32 or closed by a shaft assembly or a plate material (not shown). Further, the closed still air layer 39 is divided into a plurality of spaces by joists 23.

  In addition, a space between the inner wall plate 20 and the heat shield sheet 32 and between the outer wall base material 16 and the heat shield sheet 32 is formed as a closed still air layer 39. The four side edges of the closed still air layer 39 are closed by the base 12, the beam 13, the floor base material 24, the ceiling material 26, other shaft assembly materials and plate materials, and are further divided into a plurality of spaces by the trunk edge 47. It is delimited. Accordingly, the closed still air layer 39 is formed on both sides of the heat shield sheet 32 in this portion. A similar closed still air layer 39 is also formed between the ceiling material 26 and the heat shield sheet 32.

  According to the house 30 of this embodiment, in a highly airtight and highly insulated house in which the heat insulating material 14 is stuck inside the outer wall material 18 while maintaining an airtight state, the heat insulating and heat insulating effect of the individual rooms 36 with a simple structure. Can also be improved. In particular, the six surfaces of the room 36 are individually covered and surrounded by the heat shielding sheet 32 and the closed static air layer 39 in units of each surface, and the room 36 is formed in a heat shielding and heat insulating state for each space of each room. The That is, since the air layer of the closed still air layer 39 has no alternating current with the outside and convection is limited, a heat insulating layer with air having low thermal conductivity is formed, and the movement of radiant heat is blocked by the heat shield sheet 32, An effective heat-insulating and insulating state is formed. In addition, a closed static air layer 39 is formed on both sides of the wall surfaces of the room 36 and the heat shield sheets 32 on the first floor ceiling surface and the second floor surface, thereby exhibiting higher heat insulation performance. Further, the heat shielding sheet 32 on the floor surface of the first floor and the ceiling surface of the second floor has the closed still air layer 39 on one side and the heat insulating materials 17 and 27 are provided on the other side. High thermal insulation performance. As a result, when only the room 36 that is actually used is air-conditioned, heat exchange between the heat-insulating sheet 32 and the closed still air layer 39 is interrupted by heat conduction, convection, and radiant heat, and efficient air-conditioning is achieved. It becomes possible.

  For example, as shown in FIG. 4, between a room 36a which is a living-dining kitchen and an adjacent Japanese-style room 36b, on the back side of an indoor wall 38 facing each adjacent room 36a, 36b, each room 36a, 36b A heat shield sheet 32 is provided so as to face each other, and a closed still air layer 39 is formed in a space between them, and further, a heat insulating material 14, a heat shield sheet 32, and a closed still air layer 39 are formed inside the outer wall 18. By doing so, it becomes possible to obtain extremely high heat insulation and heat insulation performance in one space unit of the room 36. Thereby, for example, even if each room 36a, 36b in FIG. 4 is individually heated and cooled in different time zones, the movement of heat to the next room or the adjacent hallway can be minimized. And the air conditioning efficiency as the whole house can also be raised significantly, and an energy-saving and comfortable air-conditioning environment can be obtained.

  Next, 2nd embodiment of the local heat insulation structure of the building of this invention is described based on FIG. In this embodiment, a heat shield sheet 32 is attached in a fitting 40 provided in the house 30. Specifically, as shown in FIG. 5A, the heat shield sheet 32 is attached to each back side of the decorative plate 43 on both sides of the indoor door 42. Moreover, as shown in FIG.5 (b), the heat shielding sheet 32 is affixed on each back surface side of the paper 45 of the paper 44 provided in a Japanese-style room. And the circumference | surroundings of four sides are closed so that the space between the heat insulation sheets 32 may become the closed still air layer 39. FIG. Thereby, the fitting 40 of the opening part provided in the house 30 can also be made into the structure with the heat-shielding heat insulation performance.

  With this structure, it is possible to greatly improve the heat insulation and heat insulation performance of the doors 42 and the eaves 44 of the openings serving as the entrance and exit of each room 36 of the house 30, and further improve the cooling and heating effect of the individual rooms 36. it can.

  Next, 3rd embodiment of the local heat insulation structure of the building of this invention is described based on FIG. 6, FIG. Here, the same components as those in the above embodiment are denoted by the same reference numerals and description thereof is omitted. In this embodiment, a heat shielding sheet 32 is provided inside the roof 31 of the house 30. For example, in the case of the roof structure shown in FIG. 6, the roof base material of the structural plywood on the rafter 29 of the roof 31. 19 is affixed, and asphalt roofing 46 is affixed to the surface of the roof base material 19 to provide waterproofness. Further thereon, a heat shield sheet 32 is attached to one surface to form a heat shield structure, and roof tiles 48 are arranged on the surface of the heat shield sheet 32. In addition, the roof 31 is formed with an air passage between the vent 41 on the back surface side of the eaves 31a and the rafter 29 so as to ventilate and dissipate heat in the attic space.

  In the case of the roof structure shown in FIG. 7, the roof base material 19 of structural plywood is attached on the rafter 29 of the roof 31, and the asphalt roofing 46 is attached on the surface of the roof base material 19 so as to be waterproof. And tiles 48 are arranged on top of it. On the indoor side of the rafter 29, a heat insulating sheet 32 is attached to one surface to form a heat insulating structure, and a heat insulating material 37 such as urethane foam is provided on the entire surface of the heat insulating sheet 32 to form a heat insulating structure. Also in the roof 31 having this structure, an air passage is formed between the rafters 29 from the air vent 41 on the back surface side of the eaves 31a, and heat dissipation of the attic space is achieved.

  The roof 31 having the structure of this embodiment has air permeability between the rafters 29, obtains ventilation and heat dissipation effects, and can block the radiant heat from the roof tiles 48 by the heat shield sheet 32. And the air conditioning effect of the room | chamber 36 in the house 30 can be heightened more.

  Next, 4th embodiment of the local heat insulation structure of the building of this invention is described based on FIG. 8, FIG. Here, the same components as those in the above embodiment are denoted by the same reference numerals, and description thereof is omitted. In this embodiment, a heat shield sheet 32 is attached to the outdoor side of a wall panel 52 that forms a side wall portion of a house 50 by a wooden frame wall construction method, and the inside of the wall panel 52 is a closed still air layer 39. The outer wall material 18 is affixed to the outside of the heat shield sheet 32 via the trunk edge. The wall panel 52 is provided with a heat insulating material 37 on the inner side, and a surface on the indoor side becomes the inner wall plate 20 of the wall base material, and a finishing material such as wallpaper is pasted thereon.

  The floor 22 of the first floor of the house 50 has a floor panel 54 attached to the upper surface side of the base 12 and the large pull 21, and a floor finish 28 is attached to the surface of the floor panel 54. The heat insulating material 17 is provided on the back surface side of the floor panel 54, and the heat shielding sheet 32 is attached to the entire surface between the base 12 and the large pull 21 and the floor panel 54. The inside of the floor panel 54 is formed as a closed still air layer 39. The floor 22 of the second floor portion is also provided with a floor panel 56 and forms an indoor space of the room 36 with a rectangular structure together with the wall panel 52 of the first floor. The inside of the floor panel 56 is formed as a closed still air layer 39. On the surface side of the floor panel 56, a wall panel 52 is further erected to constitute a second-floor structure and form a second-floor room 36. A ceiling panel 58 is provided above the wall panel 52 on the second floor, and forms an indoor space of the room 37 on the second floor of the house 50. On the ceiling panel 58, the heat shielding sheets 32 are respectively attached to the back surfaces, which are the inner sides of the upper and lower surfaces, so that the radiant heat from the roof 31 is also blocked while the radiant heat inside the room is blocked. The inside of the ceiling panel 58 is formed as a closed still air layer 39.

  Similarly, as shown in FIG. 9, a heat insulating sheet 32 is provided on the inner wall 60 of the panel material on the back surface inside the pair of inner wall plates 20 facing each room 36. The interior of the indoor wall 60 is formed as a closed still air layer 39.

  In the house 50 having the structure according to this embodiment, the heat shield sheet 32 and the closed still air layer 39 are provided on each of the base materials 16, 19, 24 and the back surface side of the inner wall plate 20 even in the house 50 by the frame wall construction method. Thus, it becomes possible to obtain extremely high heat insulation and heat insulation performance in one space unit of the room 36, and appropriate air conditioning can be performed for each local room 36 in the house 50, and the air conditioning effect of the room 36 can be improved. Can be increased.

  In addition, this invention is not limited to the said embodiment, The thermal insulation sheet | seat may be provided in the outdoor side of the outer wall base material, and each room in a building and other others are provided with the thermal insulation sheet | seat. Any structure or application may be used as long as it forms a local heat insulating structure surrounding the space.

Next, an example of a local heat insulating structure for a building according to the present invention will be described below. In the case of a standard house and a highly airtight and highly insulated house, the average energy consumption required for air conditioning is said to be 200 kW / 3.3 m ² . Therefore, for example, in the case of a 40 × 3.3 m ² house, 8000 kW of energy is consumed. In contrast, in the case of a house provided with the heat shield sheet of the present invention, the energy consumption is experimentally 350 kW / 3.3 m ² . Therefore, for example, if only 3 rooms (3 × 4 × 3.3 m ² ) are air-conditioned, 4200 kW may be consumed, and efficient air-conditioning is possible.

Next, for the room 36a which is the living dining kitchen of the house 30 shown in FIG. 4, the difference in the thermal conductivity (W / m ² · K) with and without the heat shield sheet 32 was calculated. The room 36a has an area of 26.5 m ² , and calculation was performed with and without the heat shield sheet 32 and the closed static air layer 39 in the structure shown in FIGS. 1 and 3. The heat transmissivity between the outer wall material 18 and the inner wall plate 20 is 0.57 W / m ² · K when the heat shield sheet 32 is not provided, but 0.43 W / m ² · K when provided. Met. For the indoor wall 38, the structure shown in FIG. 3 is 2.38 W / m ² · K when the heat shield sheet 32 is not provided, but 0.52 W / m ² · K when provided. . As for the ascending portion, it was 0.19 W / m ² · K when the heat shield sheet 32 was not provided, whereas it was 0.16 W / m ² · K when provided. The floor 22 was 2.44 W / m ² · K when the heat shield sheet 32 was not provided, whereas it was 0.83 W / m ² · K when provided. As a result, the cost of kerosene per month in winter was 19975 yen without the heat shield sheet 32, but could be reduced to 12345 yen when provided.

  From the above, by providing the heat shield sheet 32 and the closed still air layer 39 thereby, the thermal efficiency in the case of air conditioning for each room in the house can be increased, and the heating and cooling costs can be reduced.

10, 30, 50 House 12 Base 13 Beams 14, 17, 27, 37 Heat insulating material 15 Girder 16 Outer wall base material 18 Outer wall material 19 Roof base material 20 Inner wall plate 21 Large pull 22 Floor 23 joist 24 Floor base material 26 Ceiling material 28 Floor finishing material 29 Rafter 31 Roof 32 Heat shield sheet 34 Aluminum foil 36 Room 38, 60 Indoor wall 39 Closed still air layer 40 Joinery

Claims (2)

A heat shielding sheet that shields the propagation of radiant heat is provided on the constituent materials of the wall, ceiling, and floor that surround one room space of a hexahedron that constitutes a part of the interior space of the building,
The heat shield sheet, the indoor side of the structure material facing said one room space, arranged so as to cover the entire side surfaces except for the opening of the one room space,
Each of the side surfaces of the one room space facing the heat shield sheet is provided with a closed still air layer sealed for each of the side surfaces,
The wall is an outer wall base material located outside the building, and an indoor wall of the building,
Between the outer wall of the building and the outer wall base material is formed so as to be able to ventilate via a trunk edge,
A heat insulating material is provided on one surface of the indoor surface of the outer wall base material, the heat insulating sheet is provided on the indoor side of the heat insulating material, and an indoor inner wall plate is located on the indoor side of the heat insulating sheet. the a-room side of the insulation material, the closure stationary air layer is provided on both the exterior side and the interior side of the heat insulating sheet,
The pair of the heat shielding sheet is also provided on the back side of each side wall of the chamber wall, the closure stationary air layer is provided on both the exterior side and the interior side of each said heat shield sheet of the indoor wall, the The space between the pair of heat shield sheets and the outer sides form the closed still air layer ,
The thermal insulation sheet provided on the ceiling and the floor is also provided with the closed still air layer facing the outside, and on the outdoor side of the thermal insulation sheet provided on the ceiling located in the attic among the ceilings. A heat insulating material is provided, the closed still air layer is provided on the indoor side, a heat insulating material is provided on the outdoor side of the heat shield sheet on the first floor of the floor, and the closed still air layer is provided on the indoor side. Is provided,
The heat insulating sheet provided on the floor is connected to the heat insulating sheet or overlaps an end portion of another heat insulating sheet from the end portion of the heat insulating sheet provided on the outer wall base material. Placed inside,
Inside the joinery provided in the opening formed in a part of the indoor wall, the heat shield sheet and the closed still air layer are provided,
A local heat insulating structure of a building, wherein the entire surface of the one room space is surrounded by the heat shield sheet and the closed still air layer. The local heat insulating structure of a building according to claim 1, wherein the heat shielding sheet is provided inside a roof of the building.

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