JP2561765B2 - Ventilation structure above the ceiling - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation structure for a ceiling of a building.

[0002]

2. Description of the Related Art Conventionally, for ventilation of a building such as a house, in addition to forced ventilation by a ventilation fan or the like in a kitchen or bathroom or natural ventilation by a window or the like, a ventilation opening is provided only in the attic.
As shown in, since the ceiling space 100 of the house on the second floor and above was isolated from the outer space 300 of the building by the outer wall 1003, the ceiling space 100 was not ventilated. In addition, an inner wall 1002 disposed inside the beam 1 that supports the body of the building and an outer wall 10 disposed outside the beam 1
Ventilation of the inter-wall space 200 between No. 03 and No. 03 was also not performed. Note that reference numerals 1007 and 1005 in FIG. 2 denote caulking and its backup material, respectively.

[0003]

However, warm air with a high water content that is trapped during the rainy season, and air with a high water content due to water and water vapor permeating through the floor 1004 above and the ceiling 1008 below. Is cooled in the winter and 100 spaces above the ceiling
There is a problem that there is a risk of dew condensation and that molds and the like are easily propagated in the ceiling space 100 due to warm air having a large water content stagnating in the ceiling space 100.

Further, like the above-ceiling space 100, air having a large water content may stagnant in the inter-wall space 200, or moisture under the first floor may rise along the inter-wall space 200. Then, the humidity of the whole building becomes high, and there is a problem that dew condensation occurs and mold propagates.

Furthermore, since there is no place for stagnant air in the above-ceiling space 100, the noise of the upper and lower floors can be heard from the floor 10 above.
Not only does it reverberate between the floor plate of 04 and the ceiling plate of the ceiling 1008 below, but there is no escape area for sound, so it is difficult to attenuate.
There was a problem that the sound insulation of the upper and lower floors was poor.

The present invention has been made in order to solve the above-mentioned problems, and it suppresses the humidity of a building to suppress the occurrence of dew condensation and the growth of mold, and at the same time, it can improve the sound insulation of the upper and lower floors. It is intended to provide a structure.

[0007]

Means for Solving the Problems] ventilation structure of the ceiling according to claim 1, wherein the outer wall, at a space disposed inside the inside is arranged at the space a beam and the beam of the outer wall In each of the inner walls, a through hole is provided corresponding to the space behind the ceiling partitioned by the inner wall and the ceiling plate arranged inside the inner wall,
A ventilation passage is formed by the through hole.

[0008] According to a second aspect of the invention, there is provided an attic ventilation structure according to the first aspect, wherein the ventilation passage is provided by cutting out an upper end portion of an outer wall panel. Is.

According to a third aspect of the invention, there is provided an attic ventilation structure according to the first or second aspect, wherein a drainer is attached to an outer opening of the ventilation passage.

[0010]

According to the ventilation structure for the above-ceiling according to claim 1, the outer wall, the beam disposed with a space inside the outer wall, and the inner wall disposed with a space inside the beam, respectively. To
A through hole is provided corresponding to a ceiling space separated by the inner wall and a ceiling plate disposed inside the inner wall, and since a ventilation passage is formed by the through hole, the ventilation passage is provided.
The outside of the building is communicated with the space above the ceiling and the space between the outer wall and the inner wall.

According to the ventilation structure of the above-mentioned ceiling, since the ventilation passage is provided by cutting out the upper end portion of the outer wall panel, the ventilation passage rises through the space between the inner wall and the outer wall. The damp warm air below the first floor is likely to be discharged to the outside of the building.

According to the ventilation structure of the above-mentioned ceiling, since the water drainer is attached to the outer opening of the ventilation passage, the water flowing down along the outer wall from above the outer opening can be prevented. The drainage causes the water to flow out of the outer opening.

[0013]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the ventilation structure for the ceiling of the present invention is shown in FIGS. 1 and 2 and will be described below. Of them
FIG. 1 is a side cross-sectional view of a ventilation structure on the ceiling, and FIG. 2 is a perspective view of a main part of an outer wall panel and a drainer. Here, it is assumed that an H-shaped steel is used as the beam, and the inner wall and the outer wall are made of gypsum board and an outer wall panel made of lightweight cellular concrete, respectively.

As shown in FIG. 1, the ventilation structure of the above-ceiling space of the building has a ventilation passage 400 that connects the above-ceiling space 100 and the inter-wall space 200 and the outside space 300 of the building to each other. The interspace 200 is ventilated. Here, the inter-wall space 200 is a gypsum board 2 which is an inner wall disposed inside the beam 1 that supports the frame of the building (only a part of which is shown in FIG. 1) and an outside of the beam 1. The lower floor outer wall panel 3 constituting the outer wall arranged, the upper floor panel 4 supported by the upper flange 10 of the beam 1, and the upper floor panel 4 and the upper flange 10 via a support member 5. Filling part 4 made by filling the gap with the supported upper floor outer wall panel 6 with mortar or the like
It is formed by being surrounded by 0. In addition, the above-ceiling space 100
Is the upper floor panel 4, the gypsum board 2 reaching the upper floor panel 4, and the upper portion 2a of the gypsum board 2.
It is formed by being surrounded by the lower floor ceiling 8 to which the end portion 8a is attached via the attachment member 7.

The ventilation passage 400 is provided in the gypsum board 2
Of the through hole 20 provided in the portion closer to the upper floor panel 4 than the lower ceiling 8, the through hole 14 provided in the web 13 which is the vertical plate of the beam 1, and the outer wall panel 3 of the lower floor. Upper end 3a of the upper floor and lower end 6a of the outer wall panel 6 of the upper floor
The outer openings 30 provided between and are communicated with each other. As shown in FIG. 2, the outer opening portion 30 is formed by cutting out the upper end portion 3a of the lower floor outer wall panel 3 along the upper end portion 3a.
Is attached.

The drainer 9 is provided to prevent water from entering the ventilation passage 400, and is formed by bending a strip-shaped aluminum plate, for example, as shown in FIG.
In this drainer 9, a running water guide portion 9 that projects to the outside of the lower floor outer wall panel 3 and causes the water flowing down along the upper floor outer wall panel 6 to flow to the outside of the outer opening 30.
0 is provided. Below this running water guide 90,
A burlap portion 92 provided with a wing plate or the like for preventing invasion of small animals is provided, and the burlap portion 92 opens downward so as to face downward below the outer opening portion 30 and the outer space 3
It communicates with 00. On the base end side (that is, the indoor side) of the flash portion 92, there is provided a communication portion 94 that communicates with the flash portion 92 and is also housed in the outer opening 30 and communicates with the ventilation passage 400. In the upper plate portion 95 of the communication portion 94,
A step portion 96 for returning water is formed to prevent water from entering between the lower end portion 6 a of the upper floor outer wall panel 6 and the drainer 9. A portion of the upper plate portion 95 that is closer to the base end side than the step portion 96 is a mounting portion 98, and the mounting portion 98 is interposed between the lower end portion 6a of the upper floor outer wall panel 6 and the support member 5. The drainer 9 is attached to the outer opening 30 by being mounted.

The ventilation structure of the above-the-ceiling is assembled by the respective components configured as described above as follows.
First, before attaching the gypsum board 2 and the lower floor outer wall panel 3, the through holes 14 and 20 are formed at predetermined positions of the web 13 of the beam 1 and the gypsum board 2 using a drill or the like, and the lower floor outer wall panel 3 The upper opening 3a is cut out to form the outer opening 30. After that, the upper floor panel 4 is placed on the beam 1, the outer floor panel 3 is built on the lower floor, and the drain member 9 is attached to the upper flange 10 of the beam 1 by the supporting member 5 and the lower end portion 6a. The upper floor outer wall panel 6 is built so as to sandwich the portion 98. Next, attach the gypsum board 2,
If the lower floor ceiling 8 is attached via the attachment member 7 attached to the gypsum board 2, the ventilation structure behind the ceiling shown in FIG. 1 is completed. The through holes 14 and 20 may be through holes formed in advance in a factory or the like to circulate equipment pipes and air conditioning ducts, or may be formed on site.

According to the above embodiment, each of the lower floor outer wall panel (outer wall) 3, the beam 1 and the gypsum board (inner wall) 2 corresponds to the ceiling space 100, and the outer opening 30, the through hole 14, and the through hole 14 are formed. Since the through hole 20 is provided and the ventilation passage 400 is formed by these through holes, the outside space 300 of the building and the ceiling space 100 and the inter-wall space 200 communicate with each other through the ventilation passage 400. ,
It is possible to ventilate not only the space 100 above the ceiling but also the space 200 between the walls . Further , the through hole 14 is provided in the beam 1, and the ventilation passage 400 is provided in the space 100 above the ceiling.
The ventilation efficiency of the above-ceiling space 100 can be improved by being formed substantially horizontally corresponding to the above, and the presence of the beam 1 and the gypsum board 2 should allow water to enter the ventilation passage 400. Even if it does not reach the above-ceiling space 100, as a result, the humidity of the entire building is suppressed, the occurrence of dew condensation and the growth of mold are suppressed, and there is no muffled sound in the above-ceiling space 100. Excellent sound insulation. In addition, inside the outer wall panel (outer wall) 3 on the lower floor
The beam 1 is arranged at a space, and the space is placed inside the beam 1.
Since the plaster board (inner wall) 2 is installed, the outer wall of the lower floor
A relatively large wall between the panel 3 and the plasterboard 2
The interspace 200 can be obtained, and the space 200 can be embedded in the interspace 200.
It is easy to install built-in furniture and the plasterboard 2
By changing the arrangement position of the
(The distance from the inside of the outer wall panel 3 on the lower floor to the outside of the gypsum board 2)
Distance) can be easily changed and has the desired depth
Embedded furniture can be easily installed. Furthermore, before
Since the space 200 between the storage walls is ventilated,
Moisture of embedded furniture provided using the space 200 between walls
It is possible to suppress the adverse effects of mold and the like.

Further, since the upper end portion 3a of the lower floor outer wall panel 3 is cut out and the outer opening portion 30 is provided, the moist warm air under the first floor which rises along the inter-wall space 200 rises in the building. It is easy to be discharged to the outside of the building, the moisture of the entire building is efficiently suppressed, the occurrence of dew condensation and the growth of mold are suppressed, and the outer opening 30 can be provided only by notching the lower floor outer wall panel 3. Processing cost can be reduced.

Further, since a drainer 9 for preventing water from entering the ventilation passage 400 is attached to the outside of the outer opening 30, rainwater enters from the outer opening 30 and the inside of the inter-wall space 200. It is possible to effectively prevent the accumulation of moisture and the leakage of rain.

In the above-mentioned embodiment, in the case of a steel frame building, the H-shaped steel is used as the beam 1 and the inner wall and the outer wall are respectively composed of the gypsum board 2 and the outer wall panel made of lightweight cellular concrete. I explained about
The beam 1 is not limited to this, and the beam 1 may be a steel frame member of any shape, such as channel steel, and the outer wall and the inner wall may be configured in any way, such as a painted wall or plywood. The structure of the building is not limited to the steel structure, but penetrates the beam, the inner wall, and the outer wall, and the space 100 above the ceiling and the space 30 outside.
Any structure such as a reinforced concrete structure, a wooden panel structure, or a conventional wooden structure may be used as long as the ventilation passages 400 that communicate with each other are provided.

Further, in the above embodiment, the ventilation passage 400 includes the through hole 20 of the gypsum board 2 and the beam 1.
The through hole 14 and the outer opening 30 formed by cutting out the lower floor outer wall panel 3 are configured to communicate with each other, but the invention is not limited to this, and the gypsum board 2 and the beam 1 are not limited thereto. The ventilation passage 400 may be formed by cutting out the ventilation passage 40, or a ventilation hole 40 may be formed by forming a through hole in the lower floor outer wall panel 3.
You may comprise 0.

Further, the drainer 9 is not limited to the one in the above embodiment, but the material, shape, etc. may be changed in design as long as it can prevent water from entering the ventilation passage 400 from the outside. Needless to say, it is not always necessary to provide the drainer 9.

[0024]

According to the ventilation structure of the above-the-ceiling according to the first aspect, the outer wall, the beam provided with a space inside the outer wall, and the inner wall provided with a space inside the beam. In each of the above, a through hole is provided corresponding to the space above the ceiling partitioned by the inner wall and the ceiling plate disposed inside the inner wall, and the ventilation passage is formed by the through hole. Through, the space outside the building and the space between the ceiling space and the outer wall and the inner wall communicate with each other, and not only the ventilation of the ceiling space, but also the space between the outer wall and the inner wall It becomes possible to perform ventilation of . Further, by providing a through hole in the beam, the ventilation passage is formed substantially horizontally corresponding to the ceiling space, it is possible to improve the ventilation efficiency of the ceiling space, further,
Due to the presence of the beams and the inner walls, even if water invades the ventilation passage, it does not reach the space above the ceiling, and as a result, the humidity of the entire building is suppressed and the occurrence of condensation and the growth of mold. It suppresses the noise, and the sound is not trapped behind the ceiling, providing excellent sound insulation on the upper and lower floors. in addition,
A beam is placed inside the outer wall with a space, and there is no space inside the beam.
Since the inner wall is arranged with a gap, the outer wall and the inner wall are
A relatively large space can be obtained between
It becomes easy to install embedded furniture and the inner wall is arranged.
By changing the position, the width of the space (from the inner wall to the inner wall)
The distance to the outside) can be easily changed and the desired
Easy to install embedded furniture with depth
It Furthermore, the ventilation of the above space was performed.
So, the humidity of the embedded furniture provided in the space
It is possible to suppress the adverse effect of the noise.

According to the ventilation structure of the above-mentioned ceiling, since the ventilation passage is provided by notching the upper end portion of the outer wall panel, the ventilation passage rises through the space between the inner wall and the outer wall. The coming moist warm air under the floor is easily discharged to the outside of the building, the humidity of the entire building is efficiently suppressed, the generation of dew condensation and the growth of mold are suppressed, and the ventilation passage is easily provided in the outer wall portion. The processing cost of the outer wall can be reduced.

According to the ventilation structure of the above-mentioned ceiling, since the drainer is attached to the outside opening of the ventilation passage, the water flowing down along the outer wall from above the outside opening is prevented. Since the water is drained to the outside of the outer opening, it can be prevented from entering the ventilation passage, and the design is excellent.

[Brief description of drawings]

FIG. 1 is a side cross-sectional view of a ventilation structure on the back of a ceiling in the present embodiment.

FIG. 2 is a perspective view of a main part of an outer wall panel and a drainer in the present embodiment.

FIG. 3 is a side cross-sectional view of the inside of a ceiling and a wall in a conventional building.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Beam 2 Gypsum board (inner wall) 3 Lower floor outer wall panel (outer wall) 3a Upper end 9 Drainer 13 Web (vertical plate) 30 Outer opening 100 Space behind ceiling (space behind ceiling) 200 Space between walls (inner wall and outer wall) Space between) 400 ventilation passages

Claims (3)

(57) [Claims] 1. An outer wall, a beam disposed inside the outer wall with a space, an inner wall disposed inside the beam with a space, and a ceiling disposed inside the inner wall. In a building including a plate, a through hole is provided in each of the outer wall, the beam, and the inner wall so as to correspond to a space above the ceiling partitioned by the inner wall and the ceiling plate. A ventilation structure for the above-ceiling, characterized in that a ventilation passage is formed to ventilate the above-ceiling space and the space between the outer wall and the inner wall. 2. The ventilation structure for the ceiling above the ceiling according to claim 1, wherein the ventilation passage is provided by cutting out an upper end portion of an outer wall panel forming the outer wall. 3. The ventilation structure for the ceiling above the ceiling according to claim 1, wherein a drainer for preventing water from entering the ventilation passage is attached to an outer opening of the ventilation passage.