JPH09177299A - Vent pipe for ventilation opening - Google Patents

Abstract

PROBLEM TO BE SOLVED: To form a vent hole in the outer wall of a building while keeping moisture proof sheets air-tight. SOLUTION: A vent pipe is formed of a vent hole through the outer wall of a building with moisture proof sheets 6, 7. A vent pipe 21 has a flange 23 overhung from the peripheral face of a pipe 22 to an approximately vertical direction to support the pipe 22 at a specified position, where the vent hole is formed, and ensure air-tightness between the moisture proof sheet 7 and the peripheral face of the pipe. The vent pipe 21 and a flange material 24 which were separately provided in the past are made into one unit to prevent the dislocation of the pipe 22, when mounted on an outdoor hood, resulting in less air-tightness between the pipe 22 and the moisture proof sheet 7 (the flange 23).

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a ventilation pipe for forming a ventilation hole, and more particularly to a technique for forming a ventilation hole in an outer wall of a building without impairing the airtightness of a moisture-proof layer in the wall.

[0002]

2. Description of the Related Art Since the air in a building is gradually polluted by carbon dioxide gas caused by breathing, smoking, etc., it is necessary to provide a ventilation device for discharging this air at a proper time and taking in fresh air. In old houses, ventilation was performed naturally through the gaps between fittings such as windows and doors, but in recent homes where the airtightness inside the building has improved significantly, ventilation openings (air supply and exhaust port)
Are often provided.

As a general structure of such a ventilation port, for example, as shown in FIGS. 4 to 6, a ventilation hole penetrating an outer wall is formed by a resin pipe 1 and a hood 2 is installed on the outdoor side while an air hole is installed on the indoor side. There is one provided with an air supply register 3. Also, in such a ventilation port, a moisture barrier layer (moisture barrier sheet 6,
In order to maintain the airtightness of 7), the rubber material 4 and the flange material 5 are provided between the ventilation pipe and the moisture-proof sheet. In the figure, reference numeral 8 is an outer wall plate, 9 and 10 are wall boards, and a heat insulating material 12 is arranged between the boards 9 and 10.

[0004]

By the way, in the conventional ventilation port, it is difficult to maintain the airtightness of the moisture-proof layer (indoor-side moisture-proof sheet 7) in practice, even though the flange member 5 is provided. In this respect, there was room for improvement.

This is because the airtightness between the ventilation pipe 1 and the moisture-proof sheet 7, particularly the airtightness between the peripheral surface of the pipe 1 and the flange 5, is conventionally shown in FIG.
This is because the airtight tape 13 was attached to the tubular body portion 5a of the flange after the insertion, but the airtightness of the seal by the tape 13 was often impaired during construction. The reason is as follows.

Although the ventilation pipe 1 is securely fixed by being sandwiched between the outdoor hood 2 and the air supply register 3 after completion of the construction, it is simply inserted into the flange 5 during construction and the movement in the front-back direction is restricted by the tape 13. It's just that. Therefore, for example, when the outdoor hood 2 is fitted and attached to the ventilation pipe 1, the ventilation pipe 1 is also pushed to the indoor side together, and thus the tape 13 is likely to come off.

Moreover, when the outdoor hood for exhaust (or air supply) is attached, the heat insulating material 12, the moisture-proof sheets 6 and 7, and the outer wall material 8 are already arranged, so that the airtight tape 13 is rewound. Is impossible for construction. In the conventional installation work, the ventilation pipe was pushed from the indoor side to a predetermined position and the register 3 was attached as it was to complete the construction, so the airtightness of the moisture-proof sheet remains questionable, for example, during the winter season, water vapor along the ventilation pipe Invades into the wall,
It was not uncommon for trouble to occur, such as causing internal condensation.

Therefore, an object of the present invention is to ensure the airtightness of the moisture-proof layer around the ventilation port more reliably.

[0009]

In order to achieve the above object and solve the problems, a ventilation pipe according to the present invention is a ventilation pipe for penetrating an outer wall of a building provided with a moisture-proof sheet to form a ventilation hole. And the airtightly fixing and supporting the pipe at a predetermined position where a vent hole should be formed, and a flange portion protruding substantially vertically from the peripheral surface of the pipe to maintain airtightness between the moisture-proof sheet and the peripheral surface of the pipe. To do.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION The ventilation pipe according to the present invention is suitable for forming a ventilation hole through an outer wall having a moisture-proof sheet in the wall. It is provided with a flange portion that extends substantially vertically. The flange portion supports the ventilation pipe at a predetermined position where the ventilation hole should be formed, and enables airtightness between the moisture-proof sheet and the ventilation pipe.

That is, in the conventional ventilation port structure, the ventilation pipe is fitted into the flange member and the airtight tape is wound around the ventilation pipe to hermetically seal the peripheral surface of the ventilation pipe and the flange member. Since the ventilation pipe itself has the flange portion in advance, it is not necessary to seal the pipe and the flange member with the airtight tape. Also, if the flange is attached to a pillar, etc., the ventilation pipe will be fixed at the same time, so the ventilation pipe will not be displaced when the outdoor hood is attached and the airtightness between the pipe and the flange will not be impaired. The airtightness of the moisture-proof sheet can be surely maintained even at the ventilation port.

[0012]

Embodiments of the present invention will be described below with reference to the accompanying drawings. 1 to 3 are perspective views showing an example of a ventilation pipe according to the present invention. This ventilation pipe 21 as shown
Is provided with a flange portion 23 on the peripheral surface of the pipe main body 22 forming the ventilation hole. The flange portion 23 includes a flange main body 24 protruding substantially vertically from the peripheral surface of the pipe main body, and a pillar 1
1 and the like, and a base portion 25 for fixing the main pipe.

The pipe body 22 is made of a resin pipe such as a hard vinyl chloride pipe. On the other hand, the flange portion 23 is made of a resin plate such as ABS resin, and is attached to the pipe body 22 such that the peripheral surface of the pipe 22 and the flange body 24 are airtight by welding or bonding. A fixing screw hole 26 is provided at an appropriate position of the base portion 25.

The length L and the pipe diameter of the pipe body can be appropriately set according to the wall thickness and the air flow rate.
Further, the mounting position of the flange portion 23 (inward projection dimension H)
Is approximately the same as the thickness of the indoor board 10, for example, 8
-13 mm. In addition, each of these dimensions (pipe length L,
From the viewpoint of work efficiency, it is desirable to set the protrusion dimension H) to a predetermined value in advance corresponding to the standard dimension of the wall board, etc., but each dimension (L, L
H) may be set to be long so that the pipe body can be cut and adjusted at the site.

A concrete construction procedure using this pipe is as follows, for example. By fixing the flange portion 23 to the column 11 with nails or screws, the ventilation pipe 21 is installed at a predetermined position where a ventilation port should be formed. A moisture-proof sheet 7 is provided on the indoor side. The moisture-proof sheet 7 is cut to pass the pipe body 22, a hole 7a that is slightly smaller than the flange body 24 is opened, and an airtight tape 30 is attached to the peripheral portion of the hole 7a to seal between the flange body 24 and the sheet 7. A heat insulating material is arranged on the outdoor side of the moisture-proof sheet 7, and the board 9 is installed. A moisture-proof sheet 6 is provided on the surface of the board 9, and the pipe body 2
Airtight rubber 4 is passed through 2 and an airtight tape (not shown) is attached to the peripheral edge of the rubber to hermetically seal moisture-proof sheet 6. It should be noted that the space between the peripheral surface of the pipe body 22 and the rubber 4 can be airtight without a tape due to the interference of the rubber. An outer wall material with a pre-drilled hole is installed at the position of the ventilation pipe, and the hood is fitted into the pipe body 22 from the outdoor side and attached. Install an air supply register inside the room.

As described above, according to the present ventilation pipe, since the pipe body 22 forming the ventilation hole is fixed at the same time as the mounting of the flange portion 23 (the above-mentioned step), the pipe 22 is not displaced during the construction, so that the outdoor hood The airtightness between the pipe and the flange is not impaired even during mounting (the above-mentioned step), and the airtightness of the moisture-proof sheet 7 can be reliably maintained. In addition, since it is not necessary to insert the ventilation pipe into the flange member and wind the airtight tape, work efficiency is improved.

The present invention is not limited to the above embodiment. For example, the shape of the flange portion (23), the fixing mechanism to the pillar (the shape of the base portion 25), and the like can be appropriately changed in design according to the wall surface structure. The cross-sectional shape of the pipe body (22) is not limited to the circular shape and may be a rectangular shape. Further, the material of the pipe main body and the flange portion may be made of metal, in addition to synthetic resin, as long as there is no problem in cost or the like. Further, the application of this pipe is not limited to the air supply port provided with the air supply register on the indoor side. For example, the ventilation pipe (pipe body 22) is connected to the exhaust port from the indoor side with an exhaust port or other It is also possible to apply to the ventilation port.

[0018]

As described above, according to the ventilation pipe of the present invention, the airtightness of the moisture-proof sheet at the ventilation port can be more reliably maintained.

[Brief description of the drawings]

FIG. 1 is a perspective view showing an example of a ventilation pipe according to the present invention.

FIG. 2 is a perspective view showing an arrangement state of a ventilation pipe according to the present invention from the outdoor side.

FIG. 3 is a perspective view showing an arrangement state of a ventilation pipe according to the present invention from the indoor side.

FIG. 4 is a cross-sectional view illustrating the structure of a conventional ventilation port (air supply port).

FIG. 5 is a perspective view (a) and an exploded perspective view (b) illustrating the structure of a conventional ventilation port.

FIG. 6 is a perspective view showing an airtight structure of a conventional ventilation pipe and a flange member.

[Explanation of symbols]

 4 Airtight rubber 6,7 Moisture-proof sheet 7a Screw hole 9,10 Wall board 11 Column 21 Vent pipe 22 Pipe body 23 Flange portion 24 Flange body 25 Base portion 26 Screw hole 30 Airtight tape

Claims (1)

[Claims] 1. A ventilation pipe for penetrating an outer wall of a building having a moisture-proof sheet to form a ventilation hole, the pipe being airtightly fixed and supported at a predetermined position where the ventilation hole is to be formed, and a pipe peripheral surface. A ventilation pipe for a ventilation port, which is provided with a flange portion that extends substantially vertically from the above to keep the moisture-proof sheet and the peripheral surface of the pipe airtight.