JP5848602B2 - Thermal insulation structure of building - Google Patents

Description

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

  In buildings such as houses, fiber-based heat insulating materials such as glass wool are provided so as to extend along outer walls, floors, ceilings, etc., and a technology for reducing the thickness dimension of the fiber heat insulating materials has been proposed. Yes. For example, by attaching a heat insulating sheet such as a low radioactive sheet on the outer wall so as to extend along the surface of the fiber heat insulating material, the entire heat insulating portion can be uniformly thinned without deteriorating the heat insulating property of the entire outer wall. (For example, Patent Document 1).

JP 2006-177136 A

  However, the technology for attaching the heat insulating sheet to the surface of the fiber heat insulating material can reduce the material cost of the fiber heat insulating material by uniformly thinning the fiber heat insulating material, but on the other hand, the heat insulating sheet is provided. As a result, material costs and work man-hours increase. However, if the heat insulating sheet is not provided, the heat insulating performance of the fiber heat insulating material is lowered, and consequently the heat insulating performance of the building is lowered. Therefore, there is room for improvement regarding the heat insulation structure of the building.

  The main object of the present invention is to realize cost reduction for the heat insulating layer of the ceiling part and the floor part and to maintain the heat insulating property of the living space.

  Hereinafter, means and the like effective for solving the above-described problems will be described while showing functions and effects as necessary.

  The heat insulating structure for a building of the first invention is applied to a building in which a living space and a non-residential space are vertically partitioned by a ceiling surface material or a floor surface material, and the non-residential space includes the ceiling surface material or A heat insulating layer is provided along the floor surface material, and the heat insulating layer includes a first heat insulating portion and a second heat insulating portion having a heat insulating performance lower than that of the first heat insulating portion, and the first heat insulating portion. The portion and the second heat insulating portion are arranged side by side along the ceiling surface material or floor surface material.

  According to 1st invention, in the heat insulation layer of a ceiling part or a floor part, a 1st heat insulation part is arrange | positioned with respect to the part which wants to ensure high heat insulation, and with respect to the part which heat insulation does not need to be high. A 2nd heat insulation part can be arrange | positioned.

  Here, about a ceiling part and a floor part, it is thought that there exists a part which wants to make heat insulation high and the part which does not need to make heat insulation high according to the temperature distribution of non-residential space, the layout of living space, etc. For example, due to the influence of the outside air temperature, a temperature difference occurs between the portion of the non-residential space near the outer periphery of the building (outer peripheral portion) and the inner portion of the non-residential space (indoor side portion), resulting in non-uniform temperature distribution in the non-residential space When it has become, also about a ceiling part and a floor part, an outer peripheral side part turns into a part which wants to make heat insulation high, and an indoor side part turns into a part which does not need to make heat insulation high. In living space, if there is an air-conditioned space such as a living room where an air-conditioning unit is installed and a non-air-conditioned space such as a storage room where no air-conditioning unit is installed, the ceiling or floor of the air-conditioned space should have high thermal insulation. Thus, the ceiling portion and floor portion of the non-air-conditioned space are portions that do not require high heat insulation.

  As mentioned above, in the part which does not need to make heat insulation high, even if it arrange | positions a 2nd heat insulation part, the heat insulation of living space does not fall easily. For this reason, when all the heat insulation layers are formed by the 1st heat insulation part after suppressing that the heat insulation of living space falls remarkably by arranging the 1st heat insulation part in the part which wants to make heat insulation high. As a result, the cost can be reduced. Therefore, it is possible to achieve both cost reduction for the heat insulating layer of the ceiling part and the floor part and to maintain the heat insulating property of the living space.

  In 2nd invention, the said 2nd heat insulation part is arrange | positioned inside the building rather than the said 1st heat insulation part in the said non-residential space.

  According to the second aspect of the invention, in the non-residential space, the outdoor side portion has a temperature distribution that the temperature difference from the outside air is smaller than the indoor side portion. In part, it is suppressed by the first heat insulating part, and cost reduction can be realized by installing the second heat insulating part. In addition, even if the temperature of the outer peripheral side portion of the non-residential space decreases in winter, the first heat insulating portion can suppress the temperature decrease of the living space, and even in the summer season, the temperature of the outer peripheral portion of the non-residential space increases. An increase in the temperature of the living space can be suppressed by the first heat insulating portion.

  In the third invention, the building is a multi-storey building having a lower floor portion and an upper floor portion adjacent to the lower floor portion in the vertical direction, and is the living space of the lower floor portion. Between the lower-floor living space and the upper-floor living space that is the living space of the upper floor portion, an inter-floor space is provided as the non-residential space, and the first heat insulating portion and the second heat insulating portion The portion is provided for the ceiling surface material of the lower floor portion in the inter-story space, and is further provided for the floor surface material of the upper floor portion in the inter-floor space.

  According to the third aspect of the invention, hot air or cold air is transmitted from the interstory space to the lower floor living space via the ceiling surface material of the lower floor part, and from the interstitial space via the floor surface material of the upper floor part. Costs can be reduced by the amount of installation of the second heat insulating part after the first heat insulating part suppresses the transmission of hot air and cold air to the floor residential space.

  Here, the space between floors is provided between the lower-floor living space and the upper-floor living space, so the direction in which hot air or cold air is transmitted from the outside air is limited to the outside wall side, and the indoor side portion The temperature change due to the outside air tends to be smaller than the outer peripheral portion. In this case, the temperature distribution in which the outer peripheral side portion has a smaller temperature difference from the outside air than the indoor side portion becomes conspicuous compared to a non-residential space that is not an interstory space such as an attic space. Therefore, it is preferable that the third invention is applied to the second invention. Thereby, in the structure which implement | achieved cost reduction by installing a 2nd heat insulation part, it can suppress that the temperature of the installation part (indoor side part) of a 2nd heat insulation part changes with outside air largely.

  In 4th invention, the said 1st heat insulation part has a heat insulation performance higher than this 2nd heat insulation part because a thickness dimension is larger than the said 2nd heat insulation part.

  According to 4th invention, since the thickness dimension is made small compared with the 1st heat insulation part about the 2nd heat insulation part, the quantity of material can be made smaller than the 1st heat insulation part. Therefore, the material cost of the heat insulation layer formed including the 2nd heat insulation part can be reduced more reliably.

  If the fourth aspect of the invention is applied to the third aspect of the invention, the portion closer to the outer wall in the interstitial space has a smaller effective dimension in the vertical direction, and the air flow is less likely to occur. For this reason, in a space between floors, when there is a temperature difference between the indoor side portion and the outer peripheral side portion, the temperature difference is easily maintained. That is, the temperature distribution that the temperature difference between the indoor side portion and the outside air is larger than that of the outer peripheral side portion is easily maintained. Therefore, it can suppress more reliably that the installation part (indoor side part) of a 2nd heat insulation part will largely change in temperature by external air.

  In the fifth invention, the first heat insulating part is formed by stacking a plurality of heat insulating members having a predetermined thickness, and the second heat insulating part is formed without overlapping the heat insulating members, or The heat insulating member is formed so as to overlap with a smaller number than the first heat insulating portion.

  According to the fifth aspect, since both the first heat insulating portion and the second heat insulating portion are formed of the heat insulating member, it is not necessary to use different materials for the first heat insulating portion and the second heat insulating portion. For this reason, the work burden of using a plurality of types of heat insulating members properly and the cost burden of preparing a plurality of types of heat insulating members can be suppressed.

  In addition, it is preferable that the said 1st heat insulation part and the said 2nd heat insulation part are each mounted on the upper side of the said ceiling surface material in the said non-residential space. In this case, each heat insulation part with the different heat insulation performance of a 1st heat insulation part and a 2nd heat insulation part can be formed by the easy operation | work which mounts a heat insulation member so that it may overlap on a ceiling surface material.

  In a sixth aspect of the invention, the living space is partitioned into a plurality of space portions by a partition wall, and the first heat insulating portion and the second portion are disposed below at least one space portion among the plurality of space portions. The boundary part with the heat insulation part is arranged.

  According to the sixth aspect of the present invention, when there are a portion for which heat insulation is desired to be increased and a portion that is not required to be increased for each space portion, the first heat insulation portion and the second heat treatment portion are arranged in accordance with the arrangement of these portions. 2 heat insulation parts can be arranged.

  The sixth invention is preferably applied to the third invention. In this case, in each of the space portions, the outer peripheral side portion is a portion where heat insulation is desired to be increased, and the indoor side portion is a portion where heat insulation is not required to be increased. Thereby, after suppressing the inconvenience that the internal temperature for every space part does not become uniform by the temperature distribution of the space between floors by a 1st heat insulation part, cost reduction is realizable by a 2nd heat insulation part.

  In a seventh invention, the living space includes an air-conditioned space that is air-conditioned by an air-conditioner and a non-air-conditioned space that is not air-conditioned by the air-conditioner, and the non-air-conditioned space is the non-residential space A low heat insulating portion that is provided above the space and has a heat insulating performance lower than any of the first heat insulating portion and the second heat insulating portion in the non-residential space is disposed in a lower portion of the non-air-conditioned space. .

  According to the seventh invention, heat can be transferred between the non-air-conditioned space and the non-residential space through the low heat insulation portion of the floor of the non-air-conditioned space above the non-residential space. The heat of the non-residential space is released to the non-air-conditioned space through the low heat insulating portion of the floor. Thereby, it is possible to suppress heat from being accumulated in the non-residential space. Here, since the time for a resident to stay in a non-air-conditioned space such as a storage room is shorter than that of a living room or other air-conditioned space, even if the heat release destination of the non-residential space is the non-air-conditioned space of the living space, It is considered that there is no problem for comfort.

  In an eighth aspect of the invention, the non-air conditioned space is provided in each of an upper floor portion and a lower floor portion, and the non-residential space is an inter-floor space disposed between the non-air conditioned spaces, and the low heat insulating portion. Are arranged in the upper part of the non-air-conditioned space in the lower floor part in addition to the lower part of the non-air-conditioned space in the upper floor part.

  According to the eighth aspect of the invention, the low heat insulation portion is disposed on each of the ceiling portion of the non-air-conditioned space in the lower floor portion and the floor portion of the non-air-conditioned space in the upper floor portion. For this reason, for example, in summer, the heat of the non-air-conditioned space in the lower floor part is released to the interstory space through the low thermal insulation part of the ceiling part, and the heat of the interstitial space is transferred to the interstory space through the low thermal insulation part of the floor part. Released. In this case, it is possible to suppress heat accumulation in each of the non-air-conditioned space and the inter-floor space in the lower floor portion.

  In a ninth aspect of the invention, the non-residential space is divided into a plurality of sections by at least one of a large beam that supports the ceiling surface material and a large beam that supports the floor surface material, and a plurality of beam through holes are provided in the large beam. At least one of the beam through holes is provided with a blowing means for sending air through the beam through holes.

  When the non-residential space is partitioned into a plurality of beams by the beams, there is a problem that air is retained in the non-residential space. On the other hand, according to the ninth aspect of the invention, the ventilation through the beam through hole is performed by the ventilation means, so that it is possible to eliminate the retention of air in the non-residential space. Thereby, temperature adjustment of living space can be positively performed via a 2nd heat insulation part and a low heat insulation part by non-residential space. For example, in the winter season, when the non-residential space is warmed by a heat source device or the like, the warm air of the non-residential space is positively applied to the second heat insulating portion or the low heat insulating portion in addition to the first heat insulating portion, and the applied heat. It is possible to heat the living space. In addition, in the summer, when the non-residential space is cooled by a cooling device or the like, the cool air of the non-residential space is positively applied to the second heat insulating portion and the low heat insulating portion in addition to the first heat insulating portion. The living space can be cooled by cool air.

  In the building of the tenth invention, the living space and the non-residential space are divided up and down by a ceiling surface material or a floor surface material, and the non-residential space is along the ceiling surface material or the floor surface material. A heat insulating layer is provided, and the heat insulating layer includes a first heat insulating portion and a second heat insulating portion having a heat insulating performance lower than that of the first heat insulating portion, and the first heat insulating portion and the second heat insulating portion. Is a building arranged side by side along the ceiling or floor material, based on the temperature detection means for detecting the temperature of the large beam in the non-residential space, and the detection result of the temperature detection means And calculating means for calculating a lack of heat insulating performance in the first heat insulating part and the second heat insulating part, and a control means for displaying a calculation result of the calculating means on a display device. .

  According to the tenth invention, since the lack of heat insulating performance in the first heat insulating portion and the second heat insulating portion is displayed, the resident etc. can know the heat insulating properties of the floor portion and the ceiling portion while staying in the living space. it can. For this reason, even if the renovation or floor plan of the building is changed, the arrangement of the first heat insulation part and the second heat insulation part is changed so that the heat insulation of the living space can be maintained according to the shape and floor plan of the building after the renovation. can do.

The schematic longitudinal cross-sectional view which shows the structure of a building. The top view which looked at the ceiling part of the 1st floor part from the top in the space between floors. FIG. 3 is a cross-sectional view taken along line AA in FIG. 2. The figure which shows the temperature distribution of the ceiling girder of the 1st floor part in case the heat insulation part is not provided in the building. The block diagram which shows the electrical structure regarding a heat insulation structure management system. The perspective view which shows the outline | summary of a unit type building. The perspective view which shows the structure of a building unit. The schematic longitudinal cross-sectional view which shows the structure of the building in 2nd Embodiment. The top view which looked at the ceiling part of the 1st floor part in 2nd Embodiment from the top. The schematic plan view which looked at the ceiling part of the 1st floor part in 3rd Embodiment from the top. The schematic plan view which looked at the ceiling part of the 1st floor part in 3rd Embodiment from the top.

[First Embodiment]
DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, an embodiment of the invention will be described with reference to the drawings. In this embodiment, the heat insulation structure of the building of the present invention is embodied in a multi-storey unit type building having a steel frame ramen structure. FIG. 6 is a perspective view showing an outline of the building 10, and FIG. 7 is a perspective view showing a configuration of the building unit 20.

  As shown in FIG. 6, a building 10 such as a house includes a building body 12 provided on the foundation 11 and a roof 13 provided on the building body 12. The building 10 is a two-story building, and the building body 12 has a first floor part 14 as a lower floor part and a second floor part 15 as an upper floor part provided on the first floor part 14. The floor portion 14 and the second floor portion 15 are adjacent to each other in the vertical direction. In the building body 12, a plurality of building units 20 are connected to each other, and the building unit 20 of the second floor portion 15 is installed on the building unit 20 of the first floor portion 14.

  As shown in FIG. 7, the building unit 20 includes columns 21 arranged at the four corners, a ceiling beam 22 connected to the upper end (upper end) of the column 21, and the lower end (lower end) of the column 21. The column 21, the ceiling beam 22 and the floor beam 23 form a rectangular parallelepiped skeleton (frame). The column 21 is made of a square tube-shaped square steel. Further, the ceiling beam 22 and the floor beam 23 are made of channel steel having a U-shaped cross section, and are arranged toward the inside of the unit so that the groove opening sides face each other.

  Each of the ceiling girder 22 and floor girder 23 (specifically, a grooved steel web) is provided with beam through holes 22a and 23a having a diameter of about 100 mm at a plurality of locations. The four beams of the ceiling beams 22 and the four beams of floor beams 23 constitute a large beam portion.

  In the building unit 20, a plurality of small ceiling beams 25 are bridged at predetermined intervals between a pair of large ceiling beams 22 that extend along the long side portion (girder surface) and face each other. Similarly, a plurality of floor beams 26 are bridged at a predetermined interval between a pair of large floor beams 23 that extend along the long side portion and face each other. The ceiling beam 25 and the floor beam 26 extend in parallel to the ceiling beam 22 and the floor beam 23 on the short side (wife side) at the same interval. The ceiling beam 25 and the floor beam 26 are each made of lip groove steel. A ceiling member 28 is supported by the ceiling beam 25 and a floor member 29 is supported by the floor beam 26.

  Next, the internal structure of the building 10 will be described with reference to FIGS. FIG. 1 is a schematic longitudinal sectional view showing the structure of the building 10, FIG. 2 is a plan view of the ceiling portion 36 of the first floor portion 14 in the interstory space 35, and FIG. 3 is a sectional view taken along line AA in FIG. It is.

  As shown in FIG. 1, in the building 10, the first floor portion 14 has a first-floor living space 31, and the second-floor portion 15 has a second-floor living space 32. It is considered as a space used for daily life. Each living space 31, 32 is provided with a partition wall 33 that partitions the living spaces 31, 32 into a plurality of space portions. In the first-floor living space 31, a living room 31A and a Japanese-style room 31B are provided by the plurality of space portions. In the second-floor living space 32, a child room 32A, a bedroom 32B, a storage room 32C, and the like are formed by a plurality of space portions. The first floor residential space 31 corresponds to the lower floor residential space, and the second floor residential space 32 corresponds to the upper floor residential space.

  Between the first floor residential space 31 and the second floor residential space 32, an interstory space 35 is provided as a non-residential space. The interstory space 35 extends in the horizontal direction along the stacking line SL in a state of straddling the stacking line SL that is a boundary line between the building units 20 on the upper and lower floors. Both the ceiling space for the first-floor living space 31 and the under-floor space for the second-floor living space 32 are configured. The first-floor living space 31 and the inter-floor space 35 are vertically divided by the ceiling portion 36 of the first-floor living space 31, and the second-floor living space 32 and the inter-floor space 35 are the floor portion 37 of the second-floor living space 32. It is divided up and down by. The interstory space 35 is a space sandwiched between the ceiling portion 36 of the first-floor living space 31 and the floor portion 37 of the second-floor living space 32.

  An underfloor space 38 is provided below the first-floor living space 31, and the first-floor living space 31 and the underfloor space 38 are partitioned vertically by the floor portion of the first-floor living space 31. The underfloor space 38 is a space surrounded by the foundation 11. In addition, an attic space 39 is provided above the second-floor living space 32, and the second-floor living space 32 and the attic space 39 are vertically divided by the ceiling portion of the second-floor living space 32. The attic space 39 is a space formed between the roof 13 and the ceiling portion of the second-floor living space 32.

  As shown in FIG. 3, a ceiling surface material 28 is disposed below the ceiling beam 25 in the ceiling portion 36 of the first floor portion 14. The ceiling surface material 28 is formed of, for example, a two-layered gypsum board, and is fixed to the lower surface of the ceiling beam 25 with screws or the like. A ceiling heat insulating layer 41 is provided above the ceiling surface material 28. The ceiling heat insulating layer 41 is formed of a fiber heat insulating material such as glass wool, and is placed on the ceiling surface material 28 in a state of extending along the upper surface of the ceiling surface material 28. In this case, the ceiling heat insulating layer 41 is installed in the interstory space 35.

  The ceiling heat insulating layer 41 covers the top surface of the ceiling face material 28 together with the ceiling beam 25 from above, and is fixed to the ceiling beam 25 via a fixing member 44. Specifically, the fixing member 44 includes a fixing plate portion 44a in which one plate surface is a fixing surface for the ceiling heat insulating layer 41, and a hooking portion 44b provided on a plate surface that is not a fixing surface in the fixing plate portion 44a. have. The ceiling beam 25 is made of groove-shaped steel having a U-shaped cross section with the groove portion facing sideways. In the fixing member 44, the fixing plate portion 44a is fixed to the ceiling heat insulating layer 41 and the hooking portion. 44 b is hooked in the groove of the ceiling beam 25. The fixed plate portion 44a is a flexible plate material such as a synthetic resin material, and the hook portion 44b can be hooked on the groove portion of the ceiling beam 25 by applying an external force to the fixed plate portion 44a to be deformed. It becomes.

  Since the ceiling heat insulating layer 41 is fixed to the ceiling beam 25 via the fixing member 44, electric wiring, electric piping, etc. are laid between the ceiling surface material 28 and the ceiling heat insulating layer 41. In addition, it is possible to easily avoid the ceiling heat insulating layer 41 from being lifted from the fixing member 44 after securing the laying space for the electric wiring and electric piping. In addition, with respect to the fixing member 44, the ceiling heat insulating layer 41 can be fixed by an easy operation of hooking the hooking portion 44b on the groove portion of the ceiling beam 25 in a state where the fixing plate portion 44a is fixed to the ceiling heat insulating layer 41. Save time and effort.

  In the floor portion 37 of the second floor portion 15, a floor surface material 29 is disposed above the floor beam 26. The floor surface material 29 has a floor base material 29a placed on the floor beam 26 and a floor finishing material 29b placed on the floor base material 29a. Each of the floor base material 29a and the floor finishing material 29b is formed in a plate shape, and is fixed to the floor beam 26 with screws or the like in a stacked state. The floor base material 29a and the floor finishing material 29b are formed of plywood, particle board, or the like.

  A floor heat insulating layer 42 is provided below the floor surface material 29. Similarly to the ceiling heat insulating layer 41, the floor heat insulating layer 42 is formed of a fiber heat insulating material such as glass wool, and extends along the lower surface of the floor surface material 29. In this case, the floor heat insulation layer 42 is installed in the interstory space 35 similarly to the ceiling heat insulation layer 41. The floor heat insulating layer 42 covers the lower surface of the floor surface material 29 together with the floor beam 26 from below, and the ceiling heat insulating layer 41 is fixed to the ceiling beam 25 in the same manner as the ceiling heat beam 41 is fixed to the ceiling beam 25. It is fixed to the beam 25.

  Returning to the description of FIG. 1, the ceiling heat insulation layer 41 and the floor heat insulation layer 42 are installed in the interstory space 35 so that the thickness of each layer gradually decreases toward the inside of the building. That is, the heat insulation performance is the highest on the outside of the building, and the heat insulation performance is gradually lowered toward the inside of the building. Specifically, the ceiling heat insulating layer 41 includes a first heat insulating portion 41a, a second heat insulating portion 41b having a smaller thickness dimension than the first heat insulating portion 41a, and a third heat insulating member having a smaller thickness dimension than the second heat insulating portion 41b. Part 41c, and is arranged side by side in the order of the first heat insulating part 41a, the second heat insulating part 41b, and the third heat insulating part 41c from the outer peripheral side of the building 10.

  The floor heat insulating layer 42 includes a first heat insulating portion 42a, a second heat insulating portion 42b having a thickness smaller than that of the first heat insulating portion 42a, and a third heat insulating portion 42c having a thickness smaller than that of the second heat insulating portion 42b. The first heat insulating portion 42a, the second heat insulating portion 42b, and the third heat insulating portion 42c are arranged side by side in this order from the outer peripheral side of the building 10.

  In the first floor portion 14, above the living room 31 </ b> A, a boundary portion between the first heat insulating portion 41 a and the second heat insulating portion 41 b and a boundary portion between the second heat insulating portion 41 b and the third heat insulating portion 41 c in the ceiling heat insulating layer 41. Are arranged, and a boundary portion between the first heat insulating portion 41a and the second heat insulating portion 41b is arranged above the Japanese-style room 31B. In the second floor portion 15, below the child room 32A, a boundary portion between the first heat insulating portion 42a and the second heat insulating portion 42b in the floor heat insulating layer 42 is disposed, and below the bedroom 32B, the first heat insulating portion. The boundary part of 42a and the 2nd heat insulation part 42b and the boundary part of the 2nd heat insulation part 42b and the 3rd heat insulation part 42c are arrange | positioned.

  First, of the ceiling heat insulating layer 41 and the floor heat insulating layer 42, the structure of the ceiling heat insulating layer 41 will be described. As shown in FIG. 2, in the ceiling heat insulating layer 41 of the interstory space 35, the first heat insulating portion 41a is a building. It is set as the planar view rectangular frame shape extended along a peripheral part, and the 2nd heat insulation part 41b arrange | positioned inside a building rather than the 1st heat insulation part 41a is also made into the planar view rectangular frame shape. The 3rd heat insulation part 41c arrange | positioned inside the building rather than the 2nd heat insulation part 41b is made into the planar view rectangular shape.

  Incidentally, each width dimension of the vertical frame part and the horizontal frame part of the 1st heat insulation part 41a and the 2nd heat insulation part 41b is 500 mm, for example. In this case, the distance between the second heat insulating portion 41b and the outer wall is approximately 500 mm, and the distance between the third heat insulating portion 41c and the outer wall is approximately 1000 mm.

  In this case, each heat insulation part 41a-41c is provided for every building unit 20 in the respectively divided state, and becomes a planar view rectangular frame shape or a planar view rectangular shape by combining a plurality of building units 20, respectively. Is. Incidentally, the heat insulating portions 41 a to 41 c are provided inside the unit of the ceiling beam 22 in each building unit 20, and are not provided outside the unit of the ceiling beam 22. In this case, it is not provided in the gap between the ceiling beams 22 of the adjacent building units 20, but is provided intermittently across the docking line DL. The heat insulating portions 41 a to 41 c may be provided outside the unit of the ceiling beam 22. In this case, the heat insulating portions 41a to 41c are also provided in the gap between the ceiling beams 22 and are continuously provided across the docking line DL.

  Here, FIG. 4 shows the temperature distribution of the ceiling beam 22 of the first floor portion 14 when the building 10 is not provided with the heat insulating portions 41a to 41c. In FIG. 4, the X axis and the Y axis are axes that cross or longitudinally cross the building 10 in directions orthogonal to each other, and the temperatures corresponding to the X axis and the Y axis are the X axis and the X axis arranged in series inside the building. The temperature of the ceiling beam 22 arranged along the Y axis is shown.

  Here, it is assumed that the outdoor temperature is 0 ° C. in winter and the indoor temperature is higher than the outdoor temperature due to heating by an air conditioner or the like. In this case, in the ceiling beam 22 and the ceiling beam 25, the temperature near the outer wall (hereinafter referred to as the outer peripheral side) is the lowest, and the temperature gradually increases toward the inside of the building.

  Further, among the plurality of ceiling beams 22, the ceiling beams 22 to which the outer walls are attached are all included in the portion having the lowest temperature, and cool the air around the ceiling beams 22 in the interstitial space 35. become. In this case, the temperature distribution of the air in the interstitial space 35 is also the lowest temperature on the outer peripheral side portion, similar to the ceiling beam 22 and the ceiling beam 25, and gradually approaches the first floor living space 31 toward the inside of the building. (High temperature). In other words, the temperature difference between the part inside the building (hereinafter referred to as the indoor side part) and the outside air is larger than the temperature difference between the outside part and the outside air, and the temperature distribution becomes uneven. ing.

  By the way, in the steel-frame unit type building, since the ceiling beam 22 and the floor beam 23 are gathered on the outer peripheral side portion of the interstory space 35, outdoor hot air and cold air are passed through the ceiling beam 22 and the floor beam 23. It is easy to be transmitted to the space 35 between the floors. In addition, when it is assumed that the building 10 is subjected to heat insulation reinforcement, it is generally assumed that the priority of heat insulation reinforcement for the interstory space 35 is lower than the living spaces 31 and 32.

  On the other hand, in this embodiment, since the 1st heat insulation part 41a with the highest heat insulation performance is arrange | positioned on the building outer side, the cool air of the outer peripheral side part is the first floor living space through the ceiling beam 25 and the ceiling surface material 28. It can suppress that the temperature of 31 is reduced by the 1st heat insulation part 41a. On the other hand, since the temperature of the first-floor living space 31 is also unlikely to decrease for the indoor side portion in which the temperature is unlikely to decrease in the interstory space 35, the second heat insulating portion 41b and the third heat insulating portion 41c having low heat insulating performance are disposed. By doing so, the material cost of the heat insulation part is suppressed.

  Also, in summer, the indoor temperature is lower than the outside air temperature, contrary to the winter, so in the inter-floor space 35, the temperature on the outer peripheral side is the highest, and gradually enters the first floor residential space 31 toward the inside of the building. Near temperature (low temperature). On the other hand, the temperature increase of the first floor living space 31 due to the heat of the interstory space 35 is suppressed by the first heat insulating portion 41a. On the other hand, even if the heat insulation performance of the 2nd heat insulation part 41b and the 3rd heat insulation part 41c is low, the temperature of the 1st floor living space 31 does not rise easily. That is, in the interstory space 35, the outer peripheral side portion is most susceptible to the outside air temperature, and is less susceptible to the outside air temperature toward the inside of the building.

  Here, in a space where the staying time of a resident such as the living room 31A, the Japanese-style room 31B, the child room 32A, and the bedroom 32B is relatively long, the temperature in the space is uniformly maintained in order to create a comfortable environment for people. I want to do it. However, when an air temperature distribution is generated in the interstory space 35, there is a concern that the temperature distribution also occurs in the living room 31A and the like in accordance with the temperature distribution.

  In the present embodiment, the heat insulating portions 41a to 41c in the ceiling heat insulating layer 41 are arranged above the living room 31A of the first floor portion 14, for example. That is, above the living room 31A, a boundary portion between the first heat insulating portion 41a and the second heat insulating portion 41b and a boundary portion between the second heat insulating portion 41b and the third heat insulating portion 41c are arranged. In this case, in the living room 31A, the first heat insulating portion 41a is disposed on the outer peripheral portion where the temperature is likely to change, and the second heat insulating portion 41b and the third heat insulating portion 41c are disposed on the indoor portion where the temperature is unlikely to change. Therefore, even if the ceiling heat insulating layer 41 includes the second heat insulating portion 41b and the third heat insulating portion 41c in order to reduce costs, the interior of the living room 31A can be kept at a uniform temperature.

  A boundary between the first heat insulating part 41a and the second heat insulating part 41b is arranged above the Japanese room 31B, and a boundary between the second heat insulating part 41b and the third heat insulating part 41c is arranged above the entrance 31C. Has been.

  Regarding the second floor portion 15, for example, heat insulating portions 42 a to 42 c in the floor heat insulating layer 42 are respectively disposed below the bedroom 32 </ b> B. That is, below the bedroom 32B, a boundary portion between the first heat insulating portion 42a and the second heat insulating portion 42b and a boundary portion between the second heat insulating portion 42b and the third heat insulating portion 42c are arranged. In this case, similarly to the living room 31A, in the bedroom 32B, the first heat insulating portion 42a is disposed on the outer peripheral portion where the temperature is likely to change, and the second heat insulating portion 42b and the third heat insulating portion are not easily changed on the indoor portion. Since the heat insulating portion 42c is arranged, the interior of the bedroom 32B can be kept at a uniform temperature even if the floor heat insulating layer 42 includes the second heat insulating portion 42b and the third heat insulating portion 42c in order to reduce costs. it can.

  As shown in FIG. 3, each of the heat insulating portions 41 a to 41 c of the ceiling heat insulating layer 41 is formed including at least one heat insulating member 45. The heat insulating member 45 is a bag-packed body in which a fiber-based heat insulating material is filled in a bag body and is formed into a plate shape as a whole. In the ceiling heat insulating layer 41, the third heat insulating portion 41c is formed by one heat insulating member 45, the second heat insulating portion 41b is formed by overlapping two heat insulating members 45, and the third heat insulating portion 41c is 3 The two heat insulating members 45 are formed by being overlapped. That is, the second heat insulating part 41b is formed by stacking more heat insulating members 45 than the first heat insulating part 41a, and the third heat insulating part 41c is formed by stacking more heat insulating members 45 than the second heat insulating part 41b. It is formed with.

  As described above, since the heat insulating portions 41 a to 41 c are provided for each building unit 20, the heat insulating member 45 is also provided for each building unit 20. For each building unit 20, first, one heat insulating member 45 is placed as the first step so as to extend along the entire upper surface of the ceiling surface material 28, and is separated from a part of the upper surface of the first heat insulating member 45. The heat insulating member 45 is placed as the second stage, and another heat insulating member 45 is placed as a third stage on a part of the upper surface of the second stage heat insulating member 45. In this case, among the first-stage, second-stage, and third-stage heat insulation members 45, the portion where all the heat insulation members 45 are installed corresponds to the first heat insulation portion 41a, and the first and second stages. The portion where each heat insulating member 45 is installed corresponds to the second heat insulating portion 41b, and the portion where the first heat insulating member 45 is installed corresponds to the third heat insulating portion 41c.

  About the floor heat insulation layer 42 of the interstitial space 35, the top heat insulation layer 41 is just upside down, and the first heat insulation part 42a, the second heat insulation part 42b, and the third heat insulation part 42c are arranged in this order from the outer peripheral side of the building 10. It is the same as the ceiling heat insulating layer 41 that the heat insulating portions 42 a to 42 c are formed including at least one heat insulating member 45. However, in the 1st heat insulation part 42a and the 2nd heat insulation part 42b of the floor heat insulation layer 42, the heat insulation member 45 piled up mutually is joined by the adhesive agent, the staple, etc. in each contact surface. Thereby, even if it is the structure where the floor heat insulation layer 42 is attached with respect to the lower surface of the floor surface material 29, the 1st heat insulation part 42a and the 2nd heat insulation part 42b can be formed by overlapping the some heat insulation member 45. FIG. .

  Here, in the interstory space 35, the portion of the ceiling heat insulating layer 41 that covers the ceiling beam 25 protrudes downward, and the portion of the floor heat insulating layer 42 that covers the floor beam 26 is upward. In each of the heat insulating layers 41 and 42, the protruding dimensions at the first heat insulating portions 41a and 42a are large. Furthermore, the ceiling beam 25 of the first floor portion 14 and the floor beam 26 of the second floor portion 15 are arranged at positions where they overlap each other. As described above, in the portion where the protruding portions of the first heat insulating portions 41a and 42a overlap each other, the distance between the protruding portions is smaller than that of the other portions, and it is difficult for the air to flow toward the inside of the building. It has become.

  In this case, it becomes difficult for air cooled by the outside air or warmed air to flow into the building. That is, in the interstory space 35, it is easy to maintain a temperature distribution in which the temperature difference between the indoor portion and the outside air is larger than the temperature difference between the outer periphery portion and the outside air. For this reason, even if there are 2nd heat insulation part 41b, 42b and 3rd heat insulation part 41c, 42c in an indoor side part, the temperature of the 1st floor living space 31 or the 2nd floor living space 32 changes via the interstory space 35 with outside air. Can be suppressed.

  In the building 10, a heat insulation structure management system that manages the heat insulation structure of the building 10 is constructed. Here, the heat insulation structure management system will be described with reference to FIG. FIG. 5 is a block diagram showing an electrical configuration related to the heat insulation structure management system.

  As shown in FIG. 5, the heat insulation structure management system includes a controller 51 as a control means and a calculation means. The controller 51 has a microcomputer composed of a CPU and various memories, and is attached to, for example, the inner wall surface of the first-floor living space 31. Further, the controller 51 has a storage unit 52, and the storage unit 52 stores heat insulation arrangement information related to the arrangement of the heat insulation units 41 a to 41 c and the heat insulation units 42 a to 42 c in the ceiling heat insulation layer 41 and the floor heat insulation layer 42. ing. The controller 51 includes a beam temperature sensor 55 as temperature detecting means for detecting the temperature of the large beams 22 and 23 and the small beams 25 and 26 in the interstory space 35, and a display device capable of outputting notification sound and displaying a notification screen. As a notification device 56 is connected.

  The beam temperature sensor 55 is attached to each of an outer peripheral side portion, an indoor side portion, and an intermediate portion of each of the large beams 22 and 23 and the small beams 25 and 26 in the interstory space 35. Based on the result, the controller 51 is arranged at a position where a temperature distribution diagram (for example, FIG. 4) of the ceiling beam 22 can be calculated. The notification device 56 is attached to, for example, the inner wall surface of the first-floor living space 31.

  The controller 51 determines the shortage and excess of the heat insulating member 45 in the interstory space 35 based on the calculated temperature distribution diagram and the heat insulating portion arrangement information stored in the storage unit 52, and notifies the determination result of the determination result. 56. For example, in winter, in the installation region of the second heat insulating portion 41b of the ceiling heat insulating layer 41, the temperature of the ceiling large beam 22 or the ceiling beam 25 is lower than an allowable range (the temperature is about the same as that of the first heat insulating portion 41a). It is determined whether there is a portion that is low), and if there is a portion that is lower than the allowable range, it is determined that the heat insulating member 45 is insufficient for the portion, and that is notified by the notification device 56. . Moreover, about the part which the heat insulation member 45 is insufficient, the shortage amount of the heat insulation member 45 is also determined and notified.

  When there is a portion where the temperature of the ceiling beam 22 or the ceiling beam 25 is higher than the allowable range in spite of the winter season, the fact that the heat insulating member 45 is too much is notified. In this case, it becomes possible to replenish the insufficient part of the heat insulating member 45 in the excessive part, and the material cost can be suppressed without using the new heat insulating member 45. Further, the floor heat insulating layer 42 is also informed of the shortage and excess of the heat insulating layer formation as well as the ceiling heat insulating layer 41 and notified.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  In each of the ceiling heat insulating layer 41 and the floor heat insulating layer 42, the first heat insulating portions 41a and 42a are arranged for the portions for which high heat insulating properties are to be ensured, and the second heat insulating is applied to the portions that may not have high heat insulating properties. The parts 41b and 42b can be arranged. In the part which does not need to make heat insulation high, even if it arrange | positions the 2nd heat insulation parts 41b and 42b, the heat insulation of the living spaces 31 and 32 cannot fall easily. For this reason, in interstory space 35, after suppressing the heat insulation of living space 31 and 32 remarkably falling by arrange | positioning the 1st heat insulation parts 41a and 42a in the outer peripheral side part which wants to make heat insulation high. The cost can be reduced as compared with the case where all of the heat insulating layers 41 and 42 are formed by the first heat insulating portions 41a and 42a. Therefore, it is possible to achieve both cost reduction for the heat insulating layers 41 and 42 of the ceiling portion 36 and the floor portion 37 and to maintain the heat insulating properties of the living spaces 31 and 32.

  In the interstory space 35, since the first heat insulating portions 41a and 42a are arranged outside the building rather than the second heat insulating portions 41b and 42b, the outer peripheral side portion has a smaller temperature difference from the outside air than the indoor side portion. The first heat insulating portions 41a and 42a prevent the heat insulating properties of the living spaces 31 and 32 from being reduced against the uneven temperature distribution, and the cost reduction is realized by installing the second heat insulating portions 41b and 42b. it can.

  The inter-floor space 35 is provided between the first-floor living space 31 and the second-floor living space 32, so that the direction in which hot air or cold air is transmitted from the outside air is limited to the outer wall side (horizontal direction). Since the temperature change due to the outside air tends to be smaller in the inner part than in the outer peripheral part, even if the second heat insulating parts 41b and 42b are provided in the indoor part, the indoor part greatly changes in temperature due to the outside air temperature. Can be suppressed.

  Since the thickness of the second heat insulating portions 41b and 42b is smaller than that of the first heat insulating portions 41a and 42a, the amount of material can be less than that of the first heat insulating portions 41a and 42a. Therefore, the material cost of the heat insulation layers 41 and 42 formed including the second heat insulation parts 41b and 42b can be more reliably reduced.

  Since the first heat-insulating portions 41a and 42a are larger in thickness than the second heat-insulating portions 41b and 42b, the portion closer to the outer wall in the interstitial space 35 has an effective size in the vertical direction (the ceiling heat-insulating layer 41 and the floor heat-insulating layer). 42) and the air flow is less likely to occur. For this reason, in the interstitial space 35, the temperature distribution that the temperature difference between the indoor side portion and the outside air is larger than that of the outer peripheral side portion is more easily maintained, and the indoor side portion changes greatly due to the outside air temperature. This can be suppressed more reliably.

  Since the first heat insulating portions 41a and 42a and the second heat insulating portions 41b and 42b are formed by stacking a plurality of heat insulating members 45, the first heat insulating portions 41a and 42a and the second heat insulating portions 41b and 42b are formed. The work burden of using different types of heat insulating members 45 and the cost of preparing multiple types of heat insulating members 45 can be suppressed.

  In the first floor portion 14, the boundary between the first heat insulating portion 41 a and the second heat insulating portion 41 b is arranged in the ceiling heat insulating layer 41 above the space portion such as the living room 31 </ b> A. When there are a portion where it is desired to increase the heat resistance and a portion where the heat insulating property does not need to be increased, the first heat insulating portion 41a and the second heat insulating portion 41b can be arranged in accordance with the arrangement of these portions. In particular, in the interstory space 35, the outer peripheral side part becomes a part where the heat insulation is desired to be increased for each space part, and the indoor side part is a part where the heat insulation is not required to be increased. Therefore, the first heat insulating part 41a can suppress the inconvenience that the internal temperature of each space part is not uniform, and the second heat insulating part 41b and the third heat insulating part 41c can reduce the cost.

  Similarly, in the second floor portion 15, the boundary between the first heat insulating portion 42 a and the second heat insulating portion 42 b is disposed in the floor heat insulating layer 42 below the space portion such as the bedroom 32 </ b> B. The 1st heat insulation part 42a and the 2nd heat insulation part 42b can be arrange | positioned according to arrangement | positioning with a part and the part which does not need to make heat insulation high. In particular, in the interstory space 35, the outer peripheral side portion becomes a portion where the heat insulation property is desired to be increased and the indoor side portion is a portion where the heat insulation property need not be enhanced for each space portion. A cost reduction can be realized by the second heat insulating part 42b and the third heat insulating part 42c after suppressing the inconvenience that the internal temperature of each space part is not uniform due to the distribution by the first heat insulating part 42a.

  In the heat insulation structure management system, the lack of heat insulation performance of the first heat insulation portions 41a and 42a and the second heat insulation portions 41b and 42b is notified by the notification device 56 for the ceiling heat insulation layer 41 and the floor heat insulation layer 42 in the interstory space 35. Therefore, a resident etc. can know the heat insulation of the ceiling part 36 of the first floor part 14 and the floor part 37 of the second floor part 15 while staying in the living spaces 31 and 32. For this reason, even when the building 10 is renovated or the floor plan is changed, the first heat insulating portions 41a, 42a and the first heat insulating portions 41a, 42a and the second heat insulating space 31 and 32 can be maintained in accordance with the shape and floor plan of the building after the renovation. The arrangement of the two heat insulating portions 41b and 42b can be changed.

[Second Embodiment]
Next, the second embodiment will be described with a focus on differences from the first embodiment. In the present embodiment, there is a portion where the ceiling heat insulating layer 41 is not provided with respect to the ceiling surface material 28 of the first floor portion 14 in the interfloor space 35, and the floor heat insulating layer with respect to the floor surface material 29 of the second floor portion 15. There is a portion where 42 is not provided. FIG. 8 is a schematic longitudinal sectional view showing the configuration of the building 10, and FIG. 9 is a plan view of the ceiling portion 36 of the first floor portion 14 as viewed from above.

  As shown in FIG. 8, the building 10 is provided with an air conditioner 61 such as an air conditioner. The air conditioner 61 is installed in the living room 31A and the Japanese-style room 31B in the first floor portion 14, and is installed in the child room 32A and the bedroom 32B in the second floor portion 15. In this case, in the first-floor living space 31, the living room 31A and the Japanese-style room 31B in which the air conditioner 61 is installed correspond to the air-conditioned space, and the entrance 31C in which the air conditioner 61 is not installed corresponds to the non-air-conditioned space. Similarly, in the second-floor living space 32, the child room 32A and the bedroom 32B correspond to an air-conditioned space, and the storage room 32C corresponds to a non-air-conditioned space.

  In the interstory space 35, a ceiling heat insulating layer 41 and a floor heat insulating layer 42 are provided above or below the air-conditioned space, as in the first embodiment, but above or below the non-air-conditioned space, Unlike the first embodiment, the ceiling heat insulating layer 41 and the floor heat insulating layer 42 are not provided. Specifically, a non-installation portion 65 in which the ceiling heat insulating layer 41 is not installed in the interstory space 35 is disposed above the entrance 31C of the first floor portion 14. Further, a non-installation portion 66 in which the floor heat insulating layer 42 is not installed in the interstory space 35 is disposed below the storage room 32C of the second floor portion 15. In this case, the non-installation portions 65 and 66 are low heat insulation portions having lower heat insulation properties than the first heat insulation portions 41a and 42a, the second heat insulation portions 41b and 42b, and the third heat insulation portions 41c and 42c in the heat insulation layers 41 and 42. It corresponds to.

  As shown in FIG. 9, in the non-installation part 65 of the ceiling heat insulation layer 41, none of the 1st heat insulation part 41a, the 2nd heat insulation part 41b, and the 3rd heat insulation part 41c is installed, and the non-installation part 65 is This corresponds to the opening provided in the ceiling heat insulating layer 41. For example, the non-installation part 65 is an opening formed so as to straddle the second heat insulating part 41b and the third heat insulating part 41c.

  Further, the non-installation portion 65 is in a state of being bridged between adjacent building units 20. Here, in each building unit 20 in which the non-installation portion 65 is arranged, the heat insulating member 45 is individually provided except for the non-installation portion 65, and the non-installation is performed by combining a plurality of building units 20. The part 65 is in a state of straddling the docking line DL.

  Incidentally, in the first floor portion 14, in addition to the entrance 31C, a corridor, a warehouse, and the like are non-air-conditioned spaces, and a non-installed portion 65 of the ceiling heat insulating layer 41 is arranged over the non-air-conditioned spaces.

  Similarly to the non-installation part 65 of the ceiling heat insulation layer 41, none of the first heat insulation part 42a, the second heat insulation part 42b, and the third heat insulation part 42c is installed in the non-installation part 66 of the floor heat insulation layer 42. The non-installation portion 66 corresponds to an opening provided in the floor heat insulating layer 42, and is formed by providing the heat insulating member 45 individually for each building unit 20.

  In summer, it is considered that the non-air-conditioned space such as the entrance 31C and the inter-floor space 35 on each floor is likely to have a higher temperature than the air-conditioned space such as the living room 31A on each floor. Here, since the non-installed portion 65 of the ceiling heat insulating layer 41 is disposed above the entrance 31C of the first floor portion 14, the heat of the entrance 31C is released to the interstory space 35 through the non-installed portion 65, and the entrance. It is suppressed that heat is accumulated in 31C. Further, since the non-installed portion 66 of the floor heat insulating layer 42 is disposed below the storage room 32C of the second floor portion 15, the heat of the interstitial space 35 is released to the storage room 32C through the non-installed portion 66, and the interstory space It is suppressed that heat is trapped in 35. In addition, the heat of the storage door 32C is released to the outside through the attic space 39, and the heat storage in the storage door 32C is suppressed.

  In addition, in the ceiling part of the 2nd floor part 15, it is preferable that the heat insulating material is not provided with respect to the upper part of 32D of storage rooms. This makes it difficult for heat to stay in the storage 32C.

  As described above, the non-installed portion 65 of the ceiling heat insulating layer 41 is disposed with respect to the entrance 31C in the interstory space 35, and the non-installed portion 66 of the floor heat insulating layer 42 is disposed with respect to the storage 32C. Therefore, it is possible to suppress heat from being accumulated in the non-air-conditioned space and the inter-floor space 35 in the summer.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  In the floor thermal insulation layer 42 of the second floor portion 15, a non-installation portion 66 is provided below the storage compartment 32 </ b> C as a non-air-conditioned space. Can be exchanged. For this reason, for example, in summer, the heat in the interstory space 35 can be suppressed by being released to the storage compartment 32C through the non-installation portion 66. Here, since the resident or the like stays in the non-air-conditioned space such as the storage room 32C as compared with the air-conditioned space such as the bedroom 32B, the heat release destination of the interstitial space 35 is the storage room 32C of the second-floor living space 32. However, it is considered that there is no problem for human comfort.

  In the ceiling heat insulating layer 41 of the first floor portion 14, a non-installation portion 65 is provided above the entrance 31 </ b> C as a non-air-conditioned space, and therefore, between the entrance 31 </ b> C and the interstory space 35 through the non-installation portion 65. Transfer of heat becomes possible. In this case, for example, in summer, the heat of the entrance 31C is released to the interstitial space 35 through the non-installed portion 65 of the ceiling heat insulating layer 41, and further to the storage 32C from the interstitial space 35 through the non-installed portion 66 of the floor heat insulating layer 42. Released. Thereby, it can suppress that heat accumulates in non-air-conditioned spaces, such as the entrance 31C of the 1st-floor living space 31.

[Third Embodiment]
Next, the third embodiment will be described focusing on the differences from the first embodiment. In the present embodiment, the interstitial space 35 is provided with a blower fan 71 and a ventilation fan 72, and the fans 71 and 72 are driven to ventilate the interstitial space 35. FIG. 10 is a schematic plan view of the ceiling portion 36 of the first floor portion 14 as viewed from above in the interstitial space 35.

  In FIG. 10, the blower fan 71 and the ventilation fan 72 each have a drive unit such as an electric motor and rotate as the drive unit is driven. Further, the blower fan 71 and the ventilation fan 72 are attached to the beam through hole 22a of the ceiling large beam 22 of the building unit 20, and forcibly ventilate the unit inside and the unit outside of the ceiling large beam 22 through the beam through hole 22a. To do. The blower fan corresponds to a blower. Further, the beam through holes 22a and 23a correspond to reduction holes.

  The outer wall of the building 10 is provided with an intake port 75 for taking outside air OA into the interstitial space 35 and a discharge port 76 for discharging the internal air in the interstitial space 35 as exhaust EA. The intake port 75 and the discharge port 76 are respectively connected to the beam through-holes 22a arranged on the outside of the building in different building units 20 via air conditioning ducts, and the intake port 75 and the discharge port 76 are connected to each other. A ventilation fan 72 is attached to each beam through hole 22a. The ventilation fan 72 on the intake port 75 side rotates in a direction to take in outside air, and the ventilation fan 72 on the discharge port 76 side rotates in a direction to discharge inside air.

  The interstory space 35 is partitioned by the ceiling beam 22 of each building unit 20 on the first floor portion 14 and the floor beam 23 of each building unit 20 on the second floor portion 15, and the ceiling beam 22 for each building unit 20. Air tends to stay inside the unit. Therefore, in the present embodiment, the blower fan 71 is provided in the beam through hole 22a of the ceiling beam 22 located at the position where the interstory space 35 is partitioned, and when the blower fan 71 is driven, the ceiling beam for each building unit 20 is provided. The ventilation is forcibly performed between the inner spaces of 22. In addition, the ventilation path is set so that the outside air taken in from the intake port 75 is exhausted from the exhaust port 76 through all the building units 20 in the interstory space 35, and the beam through hole 22a on the ventilation path. Each of these is provided with a blower fan 71. Thus, for example, in summer, the hot air in the entire interstory space 35 is suitably discharged outdoors as the blower fans 71 and the ventilation fans 72 are driven.

  In this embodiment, the ventilation system of the interstory space 35 which controls operation | movement of the ventilation fan 71 and the ventilation fan 72 is constructed | assembled. The ventilation system includes a controller 51, and a blower fan 71 and a ventilation fan 72 are connected to the controller 51. The controller 51 is connected to an outside air temperature sensor that detects the outside air temperature and an inside air temperature sensor that detects the inside air temperature in the interstory space 35. The outside air temperature sensor and the inside air temperature sensor send detection signals to the controller 51. 51 for output.

  For example, in the summer, the controller 51 determines whether or not the inside air temperature of the interfloor space 35 is higher than a predetermined temperature, and drives the blower fan 71 and the ventilation fan 72 if it is higher. Thereby, the heat accumulated in the interstory space 35 can be forcibly discharged from the discharge port 76.

  In addition, as a configuration in which the blower fan 71 is provided in the interstitial space 35, there is a configuration in which a temperature adjusting device 73 is provided in the interstitial space 35 instead of the ventilation fan 72, and refer to FIG. 11 for the configuration. However, it will be explained. FIG. 11 is a schematic plan view of the ceiling portion 36 of the first floor portion 14 as seen from above in the interstory space 35, as in FIG.

  In FIG. 11, the temperature adjustment device 73 includes a heating unit that warms the air and a cooling unit that cools the air, and enables temperature adjustment of the interstitial space 35. In this case, a circulation path is set so that warm air or cool air blown out from the temperature adjustment device 73 passes through all the building units 20 in the interstory space 35, and a blower fan is provided in each of the beam through holes 22a on the circulation path. 71 is provided. Thereby, when warm air or cool air is blown out from the temperature adjustment device 73, the warm air or cool air is spread throughout the interstitial space 35 as the blower fan 71 is driven, and the temperature of the interstitial space 35 is suitably adjusted. be able to.

  In this case, the temperature adjustment device 73 is connected to the controller 51, and the controller 51 operates the temperature adjustment device 73 in the winter to warm the interstory space 35. Thereby, it can suppress that the space 35 is cooled with external air and the temperature of the living spaces 31 and 32 falls through the 2nd heat insulation parts 41b and 42b and the 3rd heat insulation parts 41c and 42c. In addition, the controller 51 operates the temperature adjustment device 73 in the summer to cool the interstitial space 35. Thereby, it can suppress that the interstory space 35 is heated by external air, and the temperature of the living spaces 31 and 32 falls through the 2nd heat insulation parts 41b and 42b and the 3rd heat insulation parts 41c and 42c.

  According to the embodiment described in detail above, the following excellent effects can be obtained.

  Since the air flow is forcibly generated in the interstitial space 35 by the blower fan 71, the ceiling heat insulating layer 41 and the floor heat insulating layer 42 are separated from each other in the portion where the ceiling beam 25 and the floor beam 26 overlap each other vertically. The inconvenience that the distance is small and the air hardly flows can be avoided. For this reason, in the winter season, it becomes possible to spread the warm air blown out from the temperature adjusting device 73 to the entire inter-floor space 35, so that the warm air is second heat insulating portions 41b, 42b and third heat insulating portions 41c, 42c. The living spaces 31 and 32 can be heated by the applied heat. Further, in the summer, since the cool air blown from the temperature adjusting device 73 can be spread over the entire interstory space 35, the cool air is transmitted to the second heat insulating portions 41b and 42b and the third heat insulating portions 41c and 42c. The living spaces 31 and 32 can be cooled by positively applied and the applied heat.

[Other Embodiments]
The present invention is not limited to the description of the above embodiments, and may be implemented as follows, for example.

  (1) In each of the above-described embodiments, the ceiling heat insulating layer 41 and the floor heat insulating layer 42 provided in the interstory space 35 include the second heat insulating portions 41b and 42b in addition to the first heat insulating portions 41a and 42a. However, the 1st heat insulation part and the 2nd heat insulation part may be contained in one of the ceiling heat insulation layer 41 and the floor heat insulation layer 42. In addition to the first heat insulating portion, the second heat insulating portion may be included in the floor heat insulating layer and the ceiling heat insulating layer provided in the underfloor space 38 and the attic space 39 of the first floor portion 14. In any of the underfloor space 38 and the attic space 39, the first heat insulating portion and the second heat insulating portion may be arranged side by side along the floor surface material or the ceiling surface material.

  (2) In the first embodiment, the second heat insulating portions 41b and 42b are arranged inside the building of the first heat insulating portions 41a and 42a. However, the second heat insulating portions 41b and 42b are the first heat insulating portions 41a and 41a. It may be arrange | positioned at the building outer side of 42a, and may be arrange | positioned side by side alternately with the 1st heat insulation parts 41a and 42a. In short, the first heat insulating parts 41a and 42a and the second heat insulating parts 41b and 42b may be arranged side by side.

  (3) If the ceiling heat insulating layer 41 and the floor heat insulating layer 42 have the first heat insulating portions 41a and 42a and the second heat insulating portions 41b and 42b, the third heat insulating portions 41c and 42c may not have. The heat insulating part having a lower heat insulating performance than the third heat insulating parts 41c and 42c may be further included. In the second embodiment, the non-installation parts 65 and 66 are provided as the low heat insulation parts above or below the non-air-conditioned space, but the third heat insulation part having a heat insulation performance lower than that of the second heat insulation parts 41b and 42b. 41c and 42c may be provided above or below the non-air-conditioned space as a low heat insulating portion.

  (4) Although the thickness dimension of the 1st heat insulation part 41a, 42a and the 2nd heat insulation part 41b, 42b was set by the number of the heat insulation members 45 to pile up, you may set by the thickness dimension of the heat insulation member 45 itself. . For example, the first heat insulating portions 41a, 42a and the second heat insulating portions 41b, 42b are all formed by a single heat insulating member 45, and the first heat insulating portions 41a, 42a are formed by the heat insulating member 45 having a larger thickness dimension, The second heat insulating portions 41b and 42b are formed by the heat insulating member 45 having the smaller thickness dimension.

  (5) The thickness dimensions of the first heat insulating portions 41a and 42a and the second heat insulating portions 41b and 42b may all be the same. For example, by using two types of heat insulating sheets having different heat insulating performances, the first heat insulating portions 41a and 42a are formed by the heat insulating sheets having higher heat insulating performance, and the second heat insulating portions 41b and 42b are formed by the heat insulating sheets having lower heat insulating performance. Form.

  (6) In each said embodiment, although the heat insulation performance of the ceiling heat insulation layer 41 and the floor heat insulation layer 42 is reduced in steps toward the building inner side from the building outer side, you may be made small continuously. That is, the thickness dimension of the heat insulation layers 41 and 42 may be gradually reduced at a constant rate from the outside of the building to the inside of the building.

  (7) In the third embodiment, the blower fan 71 is attached to the beam through hole 22a of the ceiling beam 22 in the interstory space 35. However, the blower fan 71 is attached to the beam through hole 23a of the floor beam 23. It may be done.

  DESCRIPTION OF SYMBOLS 10 ... Building, 14 ... First floor part as lower floor part, 15 ... Second floor part as upper floor part, 22 ... Ceiling girder as big beam, 23 ... Floor girder as big beam, 28 ... Ceiling material, 29 ... Floor Face material, 31 ... First floor living space as living space, 31A ... Living as air conditioning space, 31B ... Japanese room as air conditioning space, 31C ... Entrance as non-air conditioning space, 32 ... Second floor living space as living space, 32A A child room as an air-conditioned space 32B A bedroom as an air-conditioned space 32C A storage room as a non-air-conditioned space 35 An inter-floor space as a non-residential space 41 A ceiling heat insulating layer 41a as a heat-insulating part Heat insulation part, 41b ... second heat insulation part, 42 ... floor heat insulation layer as heat insulation part, 42a ... first heat insulation part, 42b ... second heat insulation part, 45 ... heat insulation member, 51 ... controller as control means and calculation means, 5 ... Beam temperature sensor as a temperature detecting means, 56 ... notification device as a display device, 61 ... air conditioner, 65, 66 ... non-installation portion as a low insulation portion, 71 ... blower fan as the blower means.

Claims (7)

Applicable to buildings where living space and non-residential space are partitioned vertically by ceiling or flooring materials,
In the non-residential space, a heat insulating layer is provided along the ceiling surface material or the floor surface material,
The heat insulating layer has a first heat insulating portion and a second heat insulating portion having a heat insulating performance lower than that of the first heat insulating portion,
The first heat insulating portion and the second heat insulating portion are arranged side by side along the ceiling surface material or floor surface material ,
The heat insulating structure for a building, wherein the second heat insulating portion is disposed inside the building with respect to the first heat insulating portion in the non-residential space . The building is a multi-storey building having a lower floor portion and an upper floor portion adjacent to the lower floor portion in the vertical direction;
Between the lower floor living space that is the living space of the lower floor part and the upper floor living space that is the living space of the upper floor part, an interstory space is provided as the non-residential space,
The first heat insulating portion and the second heat insulating portion are provided with respect to the ceiling surface material of the lower floor portion in the inter-floor space, and further on the floor surface material of the upper floor portion in the inter-floor space. The heat insulating structure for a building according to claim 1, which is also provided for the building. The heat insulation performance of the building according to claim 1 or 2 , wherein the first heat insulation portion has a thickness dimension larger than that of the second heat insulation portion, so that the heat insulation performance is higher than that of the second heat insulation portion. Construction. The first heat insulating part is formed by stacking a plurality of heat insulating members having a predetermined thickness,
The said 2nd heat insulation part is formed without overlapping the said heat insulation member, or the said heat insulation member is overlapped and formed by a fewer number than the said 1st heat insulation part, The 1st thru | or 3 characterized by the above-mentioned. The heat insulation structure of a building according to any one of the above. The living space is partitioned into a plurality of spaces by partition walls,
The boundary part of the said 1st heat insulation part and the said 2nd heat insulation part is arrange | positioned above or below the at least 1 space part among these several space parts, The any one of Claim 1 thru | or 4 characterized by the above-mentioned. 2. A heat insulating structure for a building according to item 1. The living space includes an air-conditioned space where air conditioning is performed and a non-air-conditioned space where air conditioning is not performed,
The non-air-conditioned space is provided above the non-residential space,
The low heat insulation part whose heat insulation performance is lower than any of the first heat insulation part and the second heat insulation part in the non-residential space is disposed in a lower part of the non-air-conditioned space. 6. The heat insulating structure for a building according to any one of 5 above. The non-air conditioned space is provided in each of the upper floor portion and the lower floor portion, and the non-residential space is an inter-floor space arranged between the non-air conditioned spaces,
The low thermal insulation portion, in addition to the lower part of the non-air-conditioned space of the upper floor portion, according to claim 6, characterized in that arranged in the upper portion of the non-air-conditioned space of the lower floor portion Thermal insulation structure of the building.

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