JPH08199702A - Sound-insulating wall and sound-insulating chamber - Google Patents

Abstract

PURPOSE: To effectively insulate an outside area from a sound source, by a method wherein a porous plate having a specified rate of hole area, a honeycomb having a specified thickness, a layer made of soundabsorbing material, and a highly sound- insulating member are integrally layered in that order from on the side of the sound source, and noise is damped and absorbed therethrough. CONSTITUTION: For each wall of a sound-insulating chamber 3, a porous plate 4 having a rate of hole of 70 to 80%, a honeycomb 5 having a thickness of 20 to 50mm, a layer 6 made of sound-absorbing material, a highly sound-insulating member 7 made of lead in plate shape, and an exterior member 8 are integrally layered in that order from inside. In this case, rubber joints 9 are provided between the lower periphery of the chamber 3 and a base stand 1, a suction port and an exhaust port are individually located at proper positions in the chamber 3, and the intake side of an exhauster is connected to the exhaust port. Furthermore, a muffler is connected to the exhaust side thereof. Noise generated at a sound source 2 is dispersed as shown with arrow 14 and is passed through the porous plates 4 as shown with arrow 15, following which the noise is refracted and damped at the insides of the honeycombs 4 and is passed through the layers 6 made of the sound-absorbing material. After that, the noise passing the sound-absorbing material is reflected on the highly sound-insulating member 7 and is reabsorbed by the layers 6.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a sound insulation wall and a sound insulation room for effectively isolating a sound source from the outside by attenuating and absorbing noise.

[0002]

2. Description of the Related Art In order to block noise from conventional machines and the like,
A sound insulation wall made of sound absorbing material is used.

[0003]

In many cases, the conventional sound-insulating wall whose main material is the sound-absorbing material has insufficient insulation performance, and no consideration has been given to measures against heat generation.

In addition, soundproofing measures were insufficient for the generation of vibration noise.

[0005]

According to the present invention, however, noise can be dispersed, attenuated and absorbed by integrally layering a honeycomb and a sound absorbing material layer on a porous plate having a relatively large aperture ratio. In addition, the heat generation is prevented by flowing the air in the sound insulation room, and the above-mentioned conventional problems are solved.

That is, in the invention of the sound insulation wall, the aperture ratio is 70 from the sound source side.
% Of a perforated plate, a honeycomb, a sound absorbing material layer, and a high sound insulating material are sequentially layered to form a sound insulating wall.

The invention of the sound insulation room is a sound insulation room characterized in that the ceiling and surrounding walls are constituted by a wall material in which a perforated plate, a honeycomb, a sound absorbing material layer and a high sound insulation material are sequentially laminated from the sound source side. The ceiling and surrounding walls are constructed by a wall material in which a perforated plate, a honeycomb, a sound absorbing material layer, and a high sound insulating material are sequentially laminated from the sound source side, and an intake port and an exhaust port are provided at appropriate places on the wall. It is a sound insulation room characterized by.

The aperture ratio of the porous plate is 70 to 85.
%. The thickness of the honeycomb is 20 to 50 mm, and the diagonal size of the honeycomb is 5 to 50 mm. A sound flow can be dispersed by the porous plate and the honeycomb, and sound entering the honeycomb is refracted and attenuated, and the honeycomb is vibrated by sound pressure to consume energy, and then absorbed by the sound absorbing material with high efficiency. As a result, it is possible to expect a remarkably high sound insulation effect.

Further, by providing an intake port and an exhaust port in the sound insulation chamber to allow the internal air to flow, heat generation in the sound insulation chamber can be prevented. If a muffler is attached to the exhaust port, it is possible to prevent noise from flowing out from this part. Further, at the intake port, noise is pushed back by the intake pressure, so there is no risk of sound leakage from this part.

[0010]

According to the present invention, since the perforated plate, the honeycomb and the sound absorbing material layer are layered, it is possible to attenuate and absorb noise and to block noise with high efficiency.

[0011]

Embodiments of the present invention will be described with reference to FIGS.

The sound source 2 on the base 1 is housed in the sound insulation room 3. The wall of the sound insulation chamber 3 is formed by integrally layering punching metal (perforated plate) 4, honeycomb 5, sound absorbing material layer 6, lead plate 7 (high sound insulating material) and exterior material 8 from the inside. 9
Is a rubber joint interposed between the base 1 and the lower edge of the sound insulation chamber 3.

Further, as shown in FIG. 3, an intake port 10 and an exhaust port 11 are provided at appropriate places in the sound insulation chamber 3, the exhaust port 11 is connected to the intake side of the exhaust fan 12, and the muffler muffler 13 is connected to the exhaust side. To do.

In the above-mentioned embodiment, the noise generated in the sound source 2 is scattered as shown by arrow 14, passes through the punching metal 4 as shown by arrow 15, and then is shown by arrow 16 in the honeycomb 5.
As shown by the arrow 17, the sound absorbing material layer 6 (eg, glass wool layer) absorbs sound. Further, the noise transmitted through the sound absorbing material is reflected by the high sound insulating material 7 (for example, a stainless plate) and is again absorbed by the sound absorbing material layer 6.

On the other hand, when the exhaust fan 12 is started, air is drawn in as shown by arrow 18, flow is made in the sound insulation chamber 3 as shown by arrow 19, and then exhaust is made as shown by arrow 20, so that the sound insulation chamber 3 can be obtained. Ventilation inside and temperature control are possible.

If an air conditioner 23 (having a temperature adjusting and purifying function) is provided between the exhaust pipe 21 and the intake pipe 22, the temperature of the intake air and the cleaning can be performed, and the exhaust air is not exhausted to the outside, so that it is not a pollution. Occurrence can be prevented in advance.

[0017]

According to the present invention, noise is dispersed, refracted,
Since it attenuates and absorbs sound, there is an effect that sound can be efficiently shielded and heat generation and contaminated air can be cleaned.

Even in the case of a sound insulation room, the working environment can be improved.

[Brief description of drawings]

FIG. 1 is a sectional view of an embodiment of the present invention.

FIG. 2 is a perspective view showing each layer of the sound insulation wall.

FIG. 3 is a plan view in which a part of the air recirculation example is similarly cut and a part thereof is omitted.

[Explanation of symbols]

 1 Base 2 Sound source 3 Sound insulation room 4 Punching metal 5 Honeycomb 6 Sound absorbing material layer 7 High sound insulation material 8 Exterior material 9 Rubber joint 10 Intake port 11 Exhaust port 12 Exhaust fan 13 Muffler muffler

Claims (5)

[Claims] 1. A perforated plate having an aperture ratio of 70% or more from the sound source side,
A sound insulation wall characterized in that a honeycomb, a sound absorbing material layer, and a high sound insulation material are sequentially laminated and integrally configured. 2. A sound insulation room characterized in that a ceiling and a surrounding wall are constituted by a wall material in which a porous plate, a honeycomb, a sound absorbing material layer and a high sound insulating material are sequentially laminated from the sound source side. 3. A ceiling and a surrounding wall are formed by a wall material in which a perforated plate, a honeycomb, a sound absorbing material layer and a high sound insulating material are sequentially laminated from the sound source side, and an intake port and an exhaust port are respectively provided at appropriate places on the wall. A sound insulation room characterized by being drilled. 4. The sound insulation room according to claim 2, wherein the aperture ratio of the perforated plate is 70% to 85%. 5. The sound insulation room according to claim 2, wherein the honeycomb has a thickness of 20 to 50 mm.