JPS6117308Y2 - - Google Patents

Description

[Detailed Description of the Invention] The present invention is characterized in that a wind tunnel is fitted and held in a hole formed through the outer wall of a building, and a flange part that comes into contact with the wall surface around the hole is connected to both the inner and outer ends of the wind tunnel. This invention relates to the structure of a noise-absorbing ventilation box that is equipped with a sound-absorbing material on its inner surface.

The structure of this type of noise-reducing ventilation box is, for example,
It is installed on the outer wall of a building for the intake of forced air in a dining kitchen or for ventilation in a living room, and is particularly effective against the deterioration of the residential environment due to noise from aircraft and automobiles. Countermeasures, namely noise countermeasures, have been taken.

In conventional noise-reducing ventilation boxes, the wind tunnel is constructed as a continuous unit, extending both indoors and outdoors. Therefore, if the wall thickness of the building's outer wall changes in relation to the length of the wind tunnel, especially if the wall thickness is much smaller than the length of the wind tunnel, it is necessary to install continuous flanges at both ends of the wind tunnel on the inner and outer surfaces of the outer wall. It becomes difficult to achieve close contact during construction, and as a result, the seal between the flange and the wall becomes uncertain and incomplete.
There is a risk that rainwater may enter the room through the gap between the wind tunnel and the wall hole, and in order to avoid this, troublesome construction work is required, leading to disadvantageous results in terms of construction.
In addition, there was a problem that spoiled the aesthetic sense.

In view of these circumstances, the present invention aims to modify the device so that it can be installed while maintaining a reliable sealing condition and aesthetic appearance regardless of changes in wall thickness.

In the structure of the noise-reducing ventilation box according to the present invention, the wind tunnel is divided into an indoor wind tunnel member and an outdoor wind tunnel member in the ventilation direction, and the flange portions of the two divided wind tunnel members are connected to the building. A sealing member is interposed between each of the wall portions of the outer wall, and between the two divided wind tunnel members,
A screw mechanism is provided so that both can be moved relatively far and near in the ventilation direction and fixedly connected by operating from inside the room, and an indoor grill is removably inserted into the wind tunnel member on the indoor side. shall be.

That is, the wind tunnel is divided into two parts, one on the indoor side and one on the outdoor side, so that the dividing members can be inserted into the wall hole from the indoor side and the outdoor side, respectively, and both parts are inserted into the wall hole from the indoor side and the outdoor side. The split members inserted from each other can be fixedly connected through a screw mechanism constructed between them by moving the flange parts relative to each other near and far while pressing the respective seal members against the wall surface depending on the wall thickness. Therefore, it can be firmly fixed to various external walls with different wall thicknesses without wobbling, and the seal between the flange part and the wall surface can be ensured. can be installed. Moreover, since there is no need to carry out any special construction to ensure the above-mentioned sealing condition, the construction is easy, and since it can be firmly fixed in place regardless of wall thickness, the sound absorbing effect of the sound absorbing material inside the wind tunnel can be improved. By being able to suppress as much as possible the noise generated due to cracking and vibration of the box due to vibration and ventilation, it has become possible to achieve an excellent overall sound reduction effect. In addition, since the indoor grille is removably inserted into the wind tunnel member on the indoor side,
Since the indoor grill can be removed extremely easily, cleaning inside the wind tunnel, which frequently occurs, is now extremely easy.

Hereinafter, an embodiment of the present invention will be described in detail based on the drawings. As shown in Fig. 1, a wind tunnel is constructed in a cylindrical shape using materials with excellent corrosion resistance and weather resistance such as aluminum, stainless steel, and synthetic resin. 1 on the indoor side and 1B on the outdoor side in the ventilation direction.
A sealing member 6A is attached to the wall surface around the round hole A that is formed through the building outer wall W with a drill or the like at the indoor end and the outdoor end of the divided wind tunnel members 1A and 1B. , 6B are integrally connected to each other, and a cylindrical shape as shown in FIG. 4 or a cylindrical shape as shown in FIGS. As shown in FIG. 6, the sound absorbing material 3 having a shape including a partition wall is fixed and held, and the two divided wind tunnel members 1A,
Ring-shaped or circumferentially intermittent projecting pieces 7A and 7B facing each other in the ventilation direction are integrally provided on the mutually abutting end sides of 1B, and project inwardly. A female threaded hole 4b is formed in the protruding piece 7B of the member 1B, while a male threaded member 4a is held in the protruding piece 7A of the indoor divided wind tunnel member 1A to be screwed into the female threaded hole 4b in a state that can be operated from inside the room. , with the two divided wind tunnel members 1A, 1
After inserting B into the wall hole A from both the inside and outside, the second
As shown in the figure, a screw mechanism 4 is configured to fixedly connect the two divided wind tunnel members 1A and 1B in a state where they can be moved relatively far and near in the ventilation direction, that is, in the inside and outside directions according to the wall thickness. Therefore, the entire structure can be installed in a completely sealed state with the flanges 2A and 2B at both ends firmly in close contact with the inner and outer wall surfaces. As mentioned above, since the wind tunnel 1 is constructed in a cylindrical shape, the wall holes can be formed using a general-purpose tool such as a drill, so that the overall installation work is efficient and practically advantageous.

The cross-sectional shape of the wind tunnel 1 can be selected, such as having a cylindrical shape or having a rectangular cross section depending on the situation.

Furthermore, 5A and 5B in the figure indicate the divided wind tunnel member 1
An inner grill and an outdoor louver are removably inserted into A and 1B, respectively, and an outdoor louver 5
By attaching a sound absorbing material 3' to the frame B and the inner surface of the blade, in addition to preventing wind and rain from entering and hiding the sound, it is possible to further enhance the sound deadening effect.

[Brief explanation of the drawing]

The drawings show an example of the structure of the noise-reducing ventilation box according to the present invention, and FIG. 1 is an exploded perspective view, FIG. 2 is a vertical side view of the construction state, and FIG. 4 is a sectional view taken along the line of FIG. 2, and FIGS. 5 and 6 are sectional views of a modification corresponding to FIG. 4. 1...Wind tunnel, 1A, 1B...Divided wind tunnel member, 2
A, 2B...Flange part, 3...Sound absorbing material, 4...
Screw mechanism, 5A...Grill, 5B...Gallery, 6
A, 6B... Seal member, A... Hole, W... Building outer wall.

Claims (1)

[Claims for Utility Model Registration] Flange portions 2A and 2B that come into contact with the wall surface around the hole A are provided at both the inner and outer ends of the wind tunnel 1 which is fitted and held in a hole A formed through the outer wall W of the building. In addition, in the structure of the noise-reducing ventilation box in which the sound absorbing material 3 is attached to the inner surface of the wind tunnel 1, the indoor wind tunnel member 1A is connected to the wind tunnel 1 in the ventilation direction.
and an outdoor wind tunnel member 1B, and seal members 6A and 6B are interposed between the respective flange portions 2A and 2B of the two divided wind tunnel members 1A and 1B and the wall surface portion of the building outer wall W, respectively. Moreover, a screw mechanism 4 is provided between the two divided wind tunnel members 1A and 1B so that both the divided wind tunnel members 1A and 1B can be moved relatively far and near in the ventilation direction and fixedly connected by operating from inside the room. Indoor grill 5A for wind tunnel member 1A
The structure of the noise-reducing ventilation box that can be inserted and removed freely. The structure of the noise-reducing ventilation box according to claim 1, wherein the wind tunnel 1 has a cylindrical shape. The structure of the noise-reducing ventilation box according to claim 1, wherein the sound absorbing material 3 is provided only in the divided wind tunnel member 1B on the outdoor side. The structure of a noise-reducing ventilation box according to any one of claims 1 to 3, wherein a louver 5B is removably inserted into the divided wind tunnel member 1B.