JPS5854227B2 - soundproof building - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION The present invention relates to a soundproof building suitable for buildings such as forging factories, rolling factories, and other factories equipped with mechanical equipment that generates noise and involves hot work processes.

Everyone knows that noise generated at factories, civil engineering construction sites, etc. has become a pollution problem in recent years.

In processing factories that do not have general hot processes, it is possible to prevent the noise emitted by machinery and equipment from being transmitted to the outside of the factory and its surroundings by making the factory building a closed structure, and to ensure proper ventilation. By providing this device, it is possible to ventilate and control the temperature within the factory.

However, in factories such as forging factories, rolling factories, and steel mills, which have heat generation sources that generate large amounts of heat such as hot working processes in addition to noise generation sources, it is necessary to consider heat countermeasures in addition to noise countermeasures. It won't happen.

If a closed-type building as described above is adopted as a factory building having such a hot working process, the temperature inside the factory will increase due to the heat source and the working environment will be significantly deteriorated.

Additionally, a forced exhaust system may be installed using a roof fan or the like, but this is economically costly.

This invention has been devised in view of the above circumstances, and provides a soundproof building that enables ventilation within the building by natural convection, forced ventilation, or a combination thereof, and that can effectively prevent noise transmission to the outside. With the goal.

The present invention will be explained below with reference to illustrated embodiments.

The soundproof building of the present invention basically comprises a building 1, a ventilation device 2 such as a monitor provided on the ceiling of the building 1, and an air flow path 3 for sucking outside air into the building 1.

In FIG. 1, openings 5 are provided at the lower end of the side wall 4 of the building 1 at intervals in the longitudinal direction of the building 1, and outer walls 6 are formed at intervals on the outside of the side wall 4 between the side wall 4 and the roof 7. It is set up to partially cover the area.

An air flow path 3 is formed by this outer wall 6, and an upper part 8 of the outer wall 6 is bent along the roof 7 to provide an air intake port 9.

The air flow passage 3 may be provided to cover the entire building 1, or may be provided partially or in plural at intervals in the longitudinal direction of the building 1 as necessary.

Further, the air flow passage 3 forms an outside room when the distance between the side wall 4 and the outer wall 6 of the building 1 is large, and can also be used as a passage for a small transport machine or a simple warehouse for products, materials, etc.

In the above configuration, the air 10 taken in from the air intake port 9 passes through the airflow path 3 and is guided into the building 1 through the opening 5.

The internal air within the building 1 is then exhausted by the ventilation system 2.

In this way, the air inside the building 1 is exhausted in the form of natural convection, and fresh air is always taken into the building 1 through the air flow path 3, so it is possible to prevent the temperature inside the building 1 from rising. can.

On the other hand, the noise inside the building 1 is radiated upward from the building 1 from the opening 5 of the side wall 4, through the air flow path 3, and from the air intake 9.

At this time, a part of the noise inside the building 1 is absorbed by the sound absorbing plates 11 attached inside the building 1 and the airflow passage 3, so the level of noise reflected inside the building can be reduced. And the noise level radiated through the airflow passage 3 can also be reduced.

In this way, the noise propagated to the outside of the building 1 is distributed such that it peaks above the ventilation system 2 of the building 1 and descends downward with a gentle slope.
The noise level towards the outside can be significantly reduced.

Furthermore, in the embodiment shown in FIG. 1, the upper part 8 of the outer wall 6 is formed by bending, so that rain or the like can be prevented from directly penetrating into the airflow passage 3.

FIG. 2 is a partially enlarged vertical cross-section showing the structure of the sound absorbing board 11, which includes a sound insulating material 12 such as an asbestos board facing outside, and a rock wool board or rock wool board attached to the inside with a predetermined gap between the steel frame 13. It is composed of a sound absorbing material 14 such as sprayed or glass wool, and an air layer between 12 and 14.

The surface of the sound absorbing material 14 is waterproofed so as not to absorb rainwater.

Next, in the embodiment shown in FIG. 3, a bent portion 1 is bent toward the outer wall 6 to form a small roof at the upper end of the side wall 4 of the airflow passage 3.
5 is provided, and an air intake port 9A having a letter-shaped cross section is formed.

This bent portion 15 ensures prevention of rain infiltration, and since the bent portion 15 acts as a noise reflector, it has the effect of attenuating noise radiated to the outside.

In the case of FIG. 4, the air intake port 9B is provided so that the upper part 8 of the outer wall 6 is located on a line extending the slope of the roof surface of the building 1, and the air intake port 9B is provided at the upper end of the side wall 4 side of the air flow passage, and is parallel to the upper part 8. A bent portion 16 is provided which forms a small roof with a staggered slope.

Although the width of the air flow passage 3 is narrowed at the intake port 9B due to the bent portion 16, this does not hinder air intake; rather, the bent portion 16 acts as a reflector and has the effect of attenuating noise at the intake port 9B. .

FIG. 5 shows an example in which the air intake port 9C in FIG. 4 is lowered.

As described above, according to the present invention, a building having a ventilation system in the ceiling is provided with an air flow passage whose upper end opening opens at the upper outside of the building and whose lower end opening opens at the lower part of the side wall of the building. This makes it possible to ventilate the building through natural convection, thereby preventing a rise in temperature inside the building.

At the same time, since the airflow passage functions as a noise guiding path within the building, it is possible to propagate noise upwards in the building and prevent noise from radiating to the surrounding sides of the building.

Therefore, according to the present invention, it is possible to provide a suitable working environment, which greatly contributes to factories having both a heat generation source and a noise generation source, which has been difficult to do in the past.

Since ventilation can be performed through a relatively wide airflow passage, the airflow speed is slow and there is little resistance, and the air can flow uniformly.

In addition, by pasting sound-absorbing plates on the inner surface of the building and the airflow passages, it has the effect of preventing noise from being reflected within the building and helping to attenuate the level of noise transmitted to the outside.

[Brief explanation of drawings]

Fig. 1 is a longitudinal cross-sectional view showing the structure of a soundproof building, Fig. 2 is a partially enlarged longitudinal cross-sectional view showing the structure of the sound-absorbing board, and Fig. 3 is a longitudinal cross-sectional view showing another example with a different air intake structure. Figures 4 and 5
The figure is a partial vertical sectional view showing another embodiment with a different air intake structure. 1... Building, 2... Ventilation system, 3...
... Air flow passage, 4 ... Side wall, 5 ...
...Opening, 6...Outer wall, 7...Roof, 8...Upper part of outer wall, 9...Air intake, 10...・Air, 11...Sound absorption board, 1
2...Sound insulation material, 13...Steel frame, 14.
...Sound absorbing material, 15...Bent part, 16...
...Bending part.

Claims (1)

[Claims] 1. An opening is provided at the lower end of the side wall surrounding the work space, and outer walls are erected at intervals along the side wall to cover the roof portion at the top of the side wall to allow inflow air to flow through. A soundproof building in which a passageway is formed, an upward exhaust airflow path is provided in the ceiling above the work space, and sound-absorbing panels are installed on the inside and outside walls of the building.