JPH05302369A - Soundproof ventilating duct - Google Patents

Abstract

PURPOSE:To discharge indoor air or inversely take fresh air at the outside in the room as noise generated in a room is completely shut out. CONSTITUTION:A number of buffers 16, 17, 18, and 19 at least the surfaces of which are formed of a noise absorbing material are arranged in a zigzagging state in an elongated ventilating cylinder 1 to form a long ventilating passage 30. Thus, when indoor air is discharged after the passage of it through a ventilating passage 10 arranged in the ventilating cylinder 1, even when noise is generated in a room, the sound thereof is absorbed by an noise absorbing material 20 therearound during the passage of it through the ventilating passage 30 and damped, whereby noise is prevented from leaking to an outdoor place.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a soundproof ventilation duct, and more particularly to a soundproof ventilation duct used for a room or a building provided with a device for generating noise.

[0002]

2. Description of the Related Art For example, a room or building provided with a music playing device such as a disco or karaoke requires a duct for ventilation. However, since the conventionally known ventilation duct is a simple steel pipe cylinder, not only the noise leaks to the outside of the building with ventilation, but also the resonance itself causes a large low-pitched sound outside and annoying the neighborhood. There was a problem. No sound-proof ventilation duct has been proposed yet, which ensures complete ventilation and noise leakage can be reliably prevented.

[0003]

SUMMARY OF THE INVENTION The present invention has been made to solve the above problems, and its purpose is to completely shut out the noise generated in the room while keeping the air in the room outside. The purpose of the present invention is to provide a soundproof ventilation duct that can take in fresh air from the outside or vice versa.

[0004]

The object of the present invention is to construct a ventilation path that bends long by providing a large number of buffers, at least the surface of which is made of a sound absorbing material, in a zigzag manner in an elongated ventilation cylinder made of, for example, a steel plate. Will be solved by.

In one embodiment, the ventilation cylinder is an elongated metal cylinder having a rectangular cross section, and a large number of buffers are provided inside the ventilation cylinder in a zigzag manner at right angles to the central axis of the ventilation cylinder so that the ventilation is long and bent. A passage is formed, and the surface of the buffer and the inner surface of the ventilation cylinder are covered with a sound absorbing material such as glass wool to form a soundproof ventilation duct. In another embodiment, the buffer itself is made of, for example, a hard urethane foam or other sound absorbing material, and is arranged in the ventilation cylinder so that a long and long ventilation path is formed.

[0006]

BEST MODE FOR CARRYING OUT THE INVENTION Referring to the drawings,
The present invention will be described in detail. FIG. 1 is a partially cutaway front view showing an embodiment of a soundproof ventilation duct according to the present invention, and FIG.
FIG. 3 is a partially cutaway side view of the sound deadening ventilation duct shown in FIG. 3, and FIG. 3 is a partially broken front view showing another embodiment of the soundproof ventilation duct according to the present invention.

First, FIGS. 1 and 2 will be described. In the figure, reference numeral 1 denotes a cylindrical elongated ventilation cylinder including a front panel 10, side plates 11 and 12, a back plate 13, a top plate 14, and a bottom plate 15. Air intake 1 on front panel 10
01 is provided, and the bottom plate 15 is provided with a discharge port 151.

A buffer 1 made of a steel plate is provided inside the ventilation cylinder 1.
6, 17, 18, and 19 are provided in a zigzag manner, and therefore a ventilation passage 30 having a long length of 99 folds is formed inside the ventilation cylinder 1. The inner surface of these ventilation cylinders 1 and the buffers 16, 17,
The surfaces of 18 and 19 are covered with a sound absorbing material 20 such as glass wool.

The air intake 101 of the ventilation cylinder is provided with, for example, a well-known blower or the like, whereby the air in the room is taken in and is discharged to the outside from the exhaust port 151 through the ventilation passage inside the ventilation cylinder 10. It is something. At this time, even if noise is generated in the room, those sounds are not transmitted to the ventilation passage 30.
While passing through, the sound absorbing material 20 around it is absorbed and attenuated, so that noise does not leak outdoors. In addition, although the buffers 16, 17, 18, and 19 are provided in the above-described embodiments, they may be gypsum boards, wire nets, rods, tubes, etc. instead of steel plates.

Next, FIGS. 3 and 4 will be described. In this embodiment, no metal buffer is provided inside the ventilation tube 40, and the sound absorbing blocks 50 as shown in FIG. 4 are arranged in a zigzag manner, whereby the entire inner wall of the ventilation tube absorbs sound absorbing material. At the same time, the buffer made of a sound absorbing material is formed to form a long ventilation path of ninety nine folds, and the same effect as the first embodiment described above can be obtained. Incidentally, inside the sound absorbing block 50, a reinforcing bone or a sound insulating plate may be appropriately provided, and a protrusion or a fold may be provided on the surface thereof.

Since the present invention is constructed as described above, it is possible to completely ventilate a room or a building, such as a disco, a bar using a karaoke device, a club, a karaoke box or the like, which generates noise, and noise pollution caused by the ventilation. Can be prevented in advance.

The configuration of the present invention is not limited to the above embodiment, and the ventilation tube may have a cylindrical cross-section, for example, and the ventilation tube itself may be L-shaped or U-shaped. Or it may be a spiral shape, and it is also recommended to further provide a protrusion or a fold made of a sound absorbing material on the surface of the buffer, and further, the arrangement of the internal buffer and the material of the sound deadening material are within the scope of the present invention. It can be freely designed and modified, and the present invention includes all of them.

[Brief description of drawings]

FIG. 1 is a partially cutaway front view showing an embodiment of a soundproof ventilation duct according to the present invention.

FIG. 2 is a partially cutaway side view of the soundproof ventilation duct shown in FIG.

FIG. 3 is a partially cutaway front view showing another embodiment of the soundproof ventilation duct according to the present invention.

FIG. 4 is a schematic perspective view of a sound absorbing block used in the soundproof ventilation duct shown in FIG.

[Explanation of symbols]

 1 ... Ventilation cylinder 10 ... Front panel 11, 12 ... Side plate 13 ...・ ・ ・ ・ ・ ・ ・ ・ Back plate 14 ・ ・ ・ ・ ・ ・ ・ ・ Top plate 15 ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ ・ Bottom plate 16, 17, 18, 19 ・ ・ ・ Buffer 101 --- Air intake 151-Exhaust 20-Sound-absorbing material 30- Ventilation path 40 Ventilation cylinder 401 Air intake 451・ Discharge port 50, 60 ・ ・ ・ ・ ・ ・ ・ ・ Sound absorption block

[Procedure amendment]

[Submission date] April 3, 1992

[Procedure Amendment 1]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 1

[Correction method] Change

[Correction content]

[Figure 1]

[Procedure Amendment 2]

[Document name to be corrected] Drawing

[Name of item to be corrected] Figure 2

[Correction method] Change

[Correction content]

[Fig. 2]

Claims (2)

[Claims] 1. A soundproof ventilation duct in which a long ventilation path that bends is formed by staggering a large number of buffers in an elongated ventilation cylinder, and a wall of the ventilation path is covered with a sound absorbing material. 2. A soundproof ventilation duct having a long ventilation path formed by staggering a buffer, at least the surface of which is made of a sound absorbing material, in a slender ventilation cylinder.