JP2017179870A - Heat insulation structure of building - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a heat insulation structure of a building capable of preventing indoor dew condensation.SOLUTION: A building comprises a unit bath storage room for storing a unit bath installed on an earthen floor surface of a building, a unit bath adjacent room adjacent to the unit bath storage room and having a floor arranged in a predetermined height from the earthen floor surface of the building and a living room adjacent to the unit bath adjacent room and having a floor arranged in a predetermined height from the earthen floor surface, and is composed of the unit bath storage room, a floor upper section and an underfloor section of the unit bath adjacent room and the floor upper section of the living room, and is composed of a living room environment section for ventilating the inside and thermally partitioned from the building outside and the underfloor section of the living room, and comprises an external environment section for ventilating with the building outside and thermally partitioned from the living room environment section.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a heat insulating structure of a building in which a unit bath is installed.

  The building is partitioned from the thermal environment outside the building by a heat insulating structure applied to the floor, outer wall, and ceiling. Of these, floor insulation methods include floor insulation that installs insulation directly under the flooring and basic insulation that installs insulation on the foundation wall under the floor. Therefore, the space area for cooling and heating increases. For this reason, floor insulation is often adopted when there is no problem even if the underfloor space is allowed to be in the same thermal environment as the outside of the building.

  The unit bath is a facility space in which a bathtub and a washing place are integrally formed of fiber reinforced plastic or the like. In recent years, unit baths are often installed on the soil surface by cutting out the floor structure in response to requests for barrier-free. In this case, the unit bath cannot have the same floor insulation as other rooms. For this reason, a method of applying a heat insulating material to the basic wall only around the unit bath and performing basic heat insulating is often used.

  In this case, since ventilation under the floor around the unit bath is blocked, there is a high possibility that condensation will occur around the base of the unit bath, which may cause a problem in durability. On the other hand, if you try to secure ventilation under the floor of the unit bath, the meaning of basic insulation is lost, the air around the unit bath communicates with the outside air, and condensation tends to occur on the floor directly above the unit bath and the partition walls around the unit bath Become. Therefore, in order to prevent this, it is necessary to provide a heat insulating material and a moisture-proof sheet on the floor immediately above the unit bath and the partition wall around the unit bath.

  As a technique for solving such a problem, a unit bath and a washroom are arranged adjacent to each other, and the unit bath and the washroom and a living space other than those include a ceiling part and a floor part. And the living space forms an airtight independent planned ventilation space, and an airtight door is provided at the boundary between the interior of the toilet and the interior of the living space, and the outside of the unit bath and the toilet An independent airtight planned ventilation space that communicates with the outside is formed, and an exhaust unit that independently guides the air in the planned ventilation space to the outside of the housing body is provided on the outside of the unit bath. There is a ventilation structure around a unit bath provided with a ventilation device that directly guides air out of the housing body (see, for example, Patent Document 1).

Japanese Patent No. 3487991

  However, in the technique of Patent Document 1, the unit bath 11 and the washroom 3 and the living space 2 are completely separated by a partition, and the living space 2 forms an airtight independent planned ventilation space. Since the airtight door 7 is provided at the boundary with the living space 2 and the independent airtight planned ventilation space 26 that communicates the outside of the unit bath 11 and the washroom 3 is configured, the living space 2 and the planned ventilation space Ventilation is hindered between 26, the unit bath 11 and the bathroom 3.

  As a result, in winter, the temperature of the living space 2 where heating is performed becomes higher than the temperature of the planned ventilation space 26, the unit bath 11 and the washroom 3 where cold outdoor air is introduced in winter. Condensation occurs on the outside of the wall 9, the underfloor partition wall 23, and the floor 19 as viewed from the bathroom 4 (inside viewed from the living space 2).

  In summer, the temperature of the living space 2 where the cooling is performed is lower than the temperature of the planned ventilation space 26, the unit bath 11 and the washroom 3 where hot outdoor air is introduced in the summer. 9, dew condensation occurs on the inside (the outside seen from the living space 2) of the floor 9, the underfloor partition wall 23, and the floor 19.

  Therefore, in the technique of Patent Document 1, it is necessary to provide a heat insulating material and a moisture-proof sheet on the partition wall 8, the ceiling wall 9, the underfloor partition wall 23, the floor portion 19, and the like, as in the prior art.

  In addition, since outside air is introduced into the planned ventilation space 26, the washroom 3, and the bathroom 4, it becomes the same environment as the external environment, and an unpleasant environment in summer and winter. In winter, there is a temperature difference between the temperature of the living space 2 where the heating is performed and the temperature of the planned ventilation space 26 where the cold outside air is introduced, the unit bath 11 and the washroom 3. May also occur.

  The present invention has been made to solve such conventional problems, and it is an object of the present invention to provide a heat insulating structure for a building that can prevent indoor condensation and heat shock.

  The present invention is a unit having a unit bath accommodating room for accommodating a unit bath installed on the dirt surface of a building, a floor adjacent to the unit bath accommodating room and disposed at a predetermined height from the dirt surface of the building. A heat insulation structure of a building having a bus adjoining room and a unit room adjoining the unit bath adjoining room and having a floor arranged at a predetermined height from the soil surface, the unit bath containing room and the unit bath adjoining room It consists of an upper floor section, an underfloor section, and an upper floor section of a living room, and is designed to ventilate the interior. And a living room environment section and a thermally partitioned external environment section.

  According to the heat insulation structure of a building of the present invention, it becomes possible to prevent condensation around the foundation of the unit bath accommodation room. In addition, the unit bath, the washroom, and the like can be made into a comfortable environment different from the external environment and similar to other living rooms, and heat shock can be prevented.

It is an elevation sectional view of the heat insulation structure of the building of the embodiment of the present invention. FIG. 2 is a cross-sectional view taken along line AA ′ of FIG. It is a BB 'plane sectional view of Drawing 1.

  Hereinafter, the heat insulation structure of a building which is an embodiment of the present invention will be described in detail with reference to the drawings.

  FIG. 1 is an elevational sectional view of a heat insulating structure for a building according to an embodiment of the present invention. In addition, this figure has expanded and schematically shown the unit bath accommodating room 100 and the unit bath adjacent room 200 for description.

  The building 1 of the present embodiment includes a unit bath accommodation room 100, a unit bath adjacent room 200, and a living room 300. The living room 300 is not limited to one room. Further, FIG. 1 shows a case in which the soil surface 400 is a soil surface of a solid foundation pressure board, but is not limited to this, and may be a waterproof mortar surface of a fabric foundation or other foundation structure (for example, traditional It may be the dirt surface of the foundation stone of the construction method.

  The unit bath storage chamber 100 is a section surrounded by the dirt surface 400, the partition wall 206, the outer wall 501, the foundation wall 401, and the ceiling surface 600. The unit bath accommodating chamber 100 is accommodated with a predetermined gap (space) around the unit bus 101. For this reason, the unit bath side of the partition wall 206 around the unit bath accommodation room usually does not have a finished surface. The unit bath 101 is supported at a predetermined height from the dirt surface 400 by the support member 104.

  The partition wall 206 has a unit bus entrance (door) 203 for entering and exiting the unit bus 101. The unit bath entrance / exit 203 has a gallery portion 207 (third ventilation portion) that allows ventilation between the unit bath 101 and the unit bath adjacent chamber 200.

  One side surface of the unit bath accommodating chamber 100 is an outer wall 501. In the building 1 of this embodiment, the base packing 103 is installed between the outer wall 501 and the base wall 401 to secure a space for ventilation under the floor, but there is a space at the lower end of the outer wall 501 of the unit bath accommodating room 100. Since the basic heat insulating material 102 is installed in such a manner as to shield the floor, the underfloor ventilation of the unit bath accommodating chamber 100 is blocked.

  However, in the building 1 of the present embodiment, the unit bath accommodating room 100 is not limited to the position in contact with the outer wall, and may be located in a position surrounded by a living room, and the unit bath adjacent room 200 may be located between It may exist in the position which touches an outer wall via.

  The unit bath adjacent room 200 is a section surrounded by the dirt surface 400, the partition wall 206, the partition wall 503, the foundation wall 402, and the ceiling surface 600. Further, the unit bath adjacent chamber 200 is divided by the floor 201 into upper and lower sections of an upper floor section and a lower floor section.

  The unit bath adjacent room 200 is adjacent to the unit bath accommodation room 100. A partition wall 206 is provided at the boundary between the unit bath adjacent room 200 and the unit bath accommodation room 100. The unit bath adjacent room 200 has a floor 201 disposed at a predetermined height from the dirt surface 400. The floor 201 includes a bathroom vent 202 (first ventilation portion) such as a ventilation gallery that communicates between the floor of the unit bath adjacent room 200 and the floor.

  In addition, there is no foundation wall under the boundary between the unit bath adjoining chamber 200 and the unit bath accommodating chamber 100, or when there is a foundation wall, the size is such that an operator can pass through the foundation wall. Are provided. This makes it easy for an operator who has entered the floor below the floor inspection port (not shown) installed on the floor 201 of the adjacent unit bath 200 to check the unit bath 101. The unit bath adjoining room 200 needs to be installed under the floor inspection port, and is preferably a space (such as a dressing room, washroom, toilet, kitchen, corridor, etc.) where no furniture or luggage is placed. Multiple rooms may be included in the form of toilets and toilets.

  The living room 300 is a section surrounded by the dirt surface 400, the partition wall 503, the outer wall 502, the foundation walls 402 and 403, and the ceiling surface 600. The living room 300 is divided by the floor 301 into upper and lower sections of an upper floor section and a lower floor section.

  The living room 300 is adjacent to the unit bath adjacent room 200. A partition wall 503 is provided at the boundary between the living room 300 and the unit bath adjacent room 200. The partition wall 503 has a unit bath adjacent room entrance / exit (door or the like) 504. There is an undercut portion 303 (second ventilation portion) having a gap of about 1 cm between the lower end of the entrance / exit 504 of the unit bath adjacent chamber and the floor 301. Air communicates between the living room 300 and the unit bath adjacent room 200 using the undercut part 303 as a ventilation part. In addition, the position and aspect of this ventilation | gas_flowing part are not restricted to an undercut, For example, you may be based on ventilation gallery.

  One side of the living room 300 is an outer wall 502. In the building 1 of the present embodiment, a foundation packing 304 is installed between the outer wall 502 and the foundation wall 403 to ensure a gap for underfloor ventilation. Thereby, ventilation is made between the outer wall 502 and the foundation wall 403, and the underfloor section of the living room 300 is ventilated with the air in the external environment of the building 1 (arrow C in FIG. 1).

  In addition, the building 1 is partitioned from the environment outside the building by outer walls 501 and 502 (other outer walls not shown) and roofs 601 and 602. Although not shown in the figure, the upper portions of the roofs 601 and 602 are joined. The outer walls 501 and 502 (other outer walls not shown) and the roofs 601 and 602 have a heat insulating function. The building 1 of the present embodiment may be a one-story building but may be a multi-storey building having two or more floors, and may be insulated from the ceiling surface of the uppermost floor instead of the roof. Moreover, since the dirt surface 400 is also provided on the ground, it has a heat insulating function. In this way, the building 1 is insulated as a whole.

  2 is a cross-sectional view taken along the line AA ′ of FIG. 3 is a cross-sectional view taken along the line BB ′ of FIG. 2 and 3 are enlarged schematic views of the unit bath accommodating chamber 100 and the unit bath adjacent chamber 200 for the sake of explanation. 2 and 3, only the foundation walls 401, 403, 404, 405, 407, and 408 on the outer periphery of the building and the foundation walls 402 and 406 on which the foundation heat insulating material is installed are described as the interior walls. In addition to the unit bath 101, the description of a structural frame such as a base, a large drawing, and a joist, an outer wall finishing material, equipment piping, and the like is omitted.

  As shown in FIG. 2, the underfloor section (B in the figure) of the living room 300 is surrounded by the foundation walls 402, 403, 405, 406, 407, and 408 from the dirt surface 400. As shown in FIG. 3, a floor heat insulating material 302 is laid on the entire lower surface of the floor 301 of the living room 300 (the upper surface of the underfloor section B of the living room 300) to form a heat insulating floor that is insulated from the floor. As a result, the upper floor section and the lower floor section B of the living room 300 are thermally partitioned by the floor heat insulating material 302.

  As shown in FIG. 2, the lower part of the unit bath accommodating room 100 and the lower floor part of the unit bath adjacent room 200 are the basic heat insulating parts surrounded by the basic heat insulating materials 102, 105, 205, 106 erected from the soil surface 400. (A in the figure).

  As shown in FIGS. 1 and 2, a base wall 402 is provided below the partition wall 503 at the boundary between the unit bath adjacent room 200 and the living room 300. The base wall 402 is provided with a base heat insulating material 205. A foundation heat insulating material 105 is provided on the foundation wall 406. Thereby, the underfloor section B and the base heat insulation section A of the living room 300 are thermally partitioned by the base heat insulating materials 105 and 205.

  In the building 1 of the present embodiment, the base heat insulating material 205 is installed on the base wall 402 and the base heat insulating material 105 is installed on the base wall 406. However, each of the basic heat insulating materials 105 and 205 is a floor. It suffices if it is installed directly under the heat insulating material 302 (including directly under the outer edge of the underfloor heat insulating material) from the soil surface 400 to the height of the floor heat insulating material 302, and may be located away from the foundation walls 402 and 406. . In other words, the partition wall 503 at the boundary between the unit bath adjacent room 200 and the living room 300 does not need to be directly above the basic heat insulating material 205, and more specifically, the partition wall between the unit bath adjacent room 200 and the living room 300. 503 may be eliminated, as is often the case between the kitchen and the dining room. Further, in the case of a construction method in which a foundation wall does not exist in the first place like the traditional construction method, naturally, the foundation heat insulating material 205 is erected independently.

  A base wall 401 is provided at the lower part of the outer wall 501. The base wall 401 is provided with a base heat insulating material 102. Further, the base wall 404 is provided with a base heat insulating material 106. Thereby, the basic heat insulation section A and the outside of the building 1 are thermally partitioned by the basic heat insulating materials 102 and 106.

  With the arrangement of the floor heat insulating material 302 and the basic heat insulating materials 102, 105, 106, and 205, in the building 1, the unit bath accommodating room 100, the upper and lower compartments of the unit bath adjacent room 200, and the floor of the living room 300 The section is a living room environment section, and the underfloor section B of the living room 300 is an external environment section that is thermally partitioned from the living room environment section.

  The bathroom vent 202 that connects the upper floor section and the lower floor section of the unit bath adjacent room 200, the undercut portion 303 that connects the living room 300 and the unit bath adjacent room 200, the unit bath 101, and the unit bath adjacent room 200 Due to the gallery section 207 that communicates with each other, the room environment section composed of the unit bath 101, the unit bath accommodating room 100, the upper and lower sections of the unit bath adjacent room 200, and the upper section of the living room 300 can move air. (Arrows A, B, and D in FIG. 1).

  Since the movement of air in the living room environment section is possible, the temperatures of the upper and lower floor sections of the unit bath accommodating room 100, the unit bath adjacent room 200, and the upper floor section of the living room 300 are made uniform, and the partition wall 206 , 503, etc., which can prevent condensation caused by temperature imbalance in the room boundary.

  In addition, since the living room environment section is appropriately cooled and heated throughout the year, the unit bath 101, the unit bath accommodating room 100, and the unit bath adjacent room 200 have a comfortable environment similar to that of the living room 300. In particular, since the temperature difference between the unit bath 101 and the living room 300 is almost eliminated, it is possible to prevent heat shock.

  Furthermore, the unit bath 101 may include a ventilation fan (not shown) that discharges indoor air to the outdoors. By operating the ventilation fan, the air in the living room environment section flows into the unit bath 101 (arrow D in FIG. 1) and is discharged to the outside. The unit bath adjacent room 200 and the living room 300 may have a ventilation fan.

  By operating the ventilation fan, it is promoted to equalize the temperature of the room environment compartment, which is composed of the unit bath accommodating room 100, the upper and lower compartments of the unit bath adjacent room 200, and the upper compartment of the living room 300, It is possible to further prevent dew condensation caused by temperature imbalance in the room boundaries such as the partition walls 206 and 503 and the dew condensation under the floor of the unit bath accommodating room 100.

  As described above, according to the heat insulating structure for a building of this embodiment, it is possible to prevent indoor condensation, particularly condensation under the unit bath floor. Further, the unit bath 101 and the unit bath adjacent room 200 can be set to a comfortable environment similar to the living room 300, which is different from the external environment, and heat shock can be prevented.

1: Building 100: Unit bath accommodation room, 101: Unit bath, 102, 105, 106: Base insulation, 103: Base packing 200: Unit bath adjacent room, 201: Floor, 202: Bathroom vent, 203: Unit bath Entrance / exit, 205; foundation heat insulating material, 206: partition wall, 207: louver part 300: room, 301: floor, 302: floor heat insulating material, 303: undercut part, 304: foundation packing 400: soil surface, 401, 402, 403, 404, 405, 406, 407, 408: foundation wall 501, 502: outer wall, 503: partition wall, 504: unit bath adjacent room entrance / exit 600: ceiling surface, 601, 602: roof

Claims (5)

A unit bath accommodation room for accommodating a unit bath installed on the dirt surface of the building; a unit bath adjacent room having a floor disposed adjacent to the unit bus accommodation room and at a predetermined height from the dirt surface; A room having a floor adjacent to the unit bath adjacent room and having a floor arranged at a predetermined height from the soil surface,
The unit bath storage room, the floor space and the floor space of the unit bath adjacent room, and the floor space of the living room, the interior of the living room is designed to be ventilated, and the living room environment section is thermally partitioned from the outside of the building,
An external environmental compartment consisting of an underfloor compartment of the living room, ventilating outside the building, and being thermally partitioned from the living room environmental compartment;
A heat insulation structure for a building, characterized by comprising: The floor of the living room has a floor insulation on the lower surface,
The lower part of the unit bath storage room and the lower floor section of the unit bath adjacent room are surrounded by a basic heat insulating material erected from the soil surface,
The building thermal insulation structure according to claim 1, wherein the living room environmental section is thermally partitioned from the outside of the building and the external environment section by the basic heat insulating material and the floor heat insulating material. The unit bath adjacent chamber has a first ventilation portion for communicating with the unit bath accommodating chamber,
The living room has a second ventilation portion for communicating with the unit bath adjacent room,
The building thermal insulation structure according to claim 1 or 2, wherein the living room environment section is designed to be ventilated by the first ventilation section and the second ventilation section. The lower floor section of the unit bath adjoining chamber communicates with the lower part of the unit bath accommodating chamber,
The heat insulation structure for a building according to claim 3, wherein the first ventilation part is provided on a floor of the unit bath adjacent room. The basic insulation is
The interior side of the base wall of the lower part of the outer wall of the unit bath accommodation room and the unit bath adjacent room,
A foundation wall at the lower boundary between the unit bath adjoining room and the living room;
The heat insulating structure for a building according to any one of claims 2 to 4, wherein the heat insulating structure is built up.