KR102257510B1 - Noise Reduction system for Stucture - Google Patents

Abstract

The present invention relates to a noise reducing building structure, in which a sound absorbing unit is formed on the inner side of an external wall to perform a primary reducing action due to a sound absorbing action and one or more silencers are formed on one side of the external wall to perform a secondary reducing action, thereby providing a building structure having a noise reducing effect to reinforce product competitiveness. To this end, the present invention comprises: the external wall enabling the building structure to be formed; a blower formed on the inner side of the external wall; the sound absorbing unit formed on the inner side of the external wall to show primary reduction performance by the sound absorbing action for noises generated by the blower; and the one or more silencers formed on one side of the external wall to show secondary reduction performance by colliding and splitting the noises of the blower.

Description

Noise Reduction system for Stucture

The present invention relates to a noise-reducing architectural structure, and more particularly, by configuring a sound-absorbing part on the inner side of an outer wall to perform a first reduction effect by sound-absorbing action, and configuring at least one silencer on one side of the outer wall to configure the silencer It relates to a noise reduction building structure that enhances product competitiveness by providing a building structure having a noise reduction effect by performing a secondary reduction effect by

In addition, it relates to a noise reduction building that can simultaneously obtain a protective effect such as equipment and various protective sensors from ambient temperature due to the noise reduction building in the hot weather.

In general, ducts for circulating air or the like are widely used in various machinery and industrial sites, or in everyday life sites.

A duct refers to a passage structure that distributes gaseous fluid such as air, and in some cases, only a duct is provided as an air distribution channel. However, a fan is provided for inflow of outside air and exhaust of indoor air in structures such as buildings and ships. In most cases, it is installed.

If a fan is installed in the duct, of course, fan noise is transmitted through the duct.

Even without a fan, fluid noise is generated by friction with the duct while air flows.

This noise not only causes considerable inconvenience to people, but also may cause hearing impairment due to noise when the operator is close to the facility for inspection and repair of the facility, and therefore, in order to reduce the noise generated from the duct. Various technologies have been developed and products utilizing them have been used.

For example, the silencer provided in the exhaust pipe of the vehicle is formed in a cylindrical shape so that the interior is divided into several spaces, so that sound waves interfere with the process of passing through the barrier, pressure fluctuations are reduced, or the exhaust temperature is reduced. A technique for reducing the noise by allowing it to be lowered is disclosed.

The silencer structure of Korean Patent No. 10-357578 describes a silencer structure. In order to improve the conventional silencer structure, a communication hole is formed in a side wall and a structure including a chamber in which an inner tube is provided is disclosed.

In the case of a silencer provided in a vehicle, a number of factors such as the vehicle fuel economy problem depending on the silencer weight and the effect on the engine performance depending on the back pressure applied to the engine, in addition to the noise performance of the silencer, are considered in combination, and the structure and material of the silencer are designed It is natural to be.

Silencers are provided not only in exhaust pipes of vehicles, but also in general air conditioning ducts through which air flows.

In this case, as compared to the vehicle exhaust pipe, for example, the weight of the silencer does not become a big problem, and the design conditions may be partially different.

A silencer provided in a general air conditioning duct is typically made of a sound-absorbing material, and the sound-absorbing material is generally made of a porous material that absorbs noise from the internal fiber structure and converts it into heat energy.

The performance of such a sound-absorbing material is influenced by the size and density of the internal fiber structure, and it is well known that the finer the fiber structure, the lower the density, or the more fiber curvature, the better the sound-absorbing performance is exhibited.

Materials widely used as sound-absorbing materials include urethane foam, glass wool, compression sponge, rock wool, chemical wool, wool, and the like.

A silencer made of such a sound-absorbing material has an advantage of having a much higher reduction effect by sound absorption than a silencer provided in an automobile exhaust pipe.

However, since these sound absorbing materials are made of a fine fibrous structure as described above, fine debris is generated, and these fine debris float in the air and are inhaled into the human body, causing adverse health effects or being released to nature to destroy the environment. There are such problems.

Accordingly, some of the above-described materials are restricted or prohibited in use.

In addition, in the case of a sound-absorbing material made of a porous material, it is well known that it is effective in absorbing and blocking high-frequency noise, but does not have the ability to absorb medium and low-frequency noise.

In the case of a widely used porous sound-absorbing material, the sound absorption rate of about 1,000 Hz is quite excellent, about 0.8 to 0.9.

However, it has been experimentally found that when the frequency is lowered to about 500 Hz, the sound absorption coefficient drops to about 0.5, and as the frequency is lowered, this tendency becomes stronger.

However, it is well known that low-frequency noise among ducts in industrial sites also gives a considerable discomfort and fatigue to humans, and there has been a steady demand for a silencer capable of effectively reducing the mid- and low-frequency noise.

On the other hand, from a viewpoint different from the use of sound-absorbing materials, research has been made on a technology to block noise by using a structural shape.

When structures of a certain shape, such as small particles or rods, are periodically arranged like a grid in a medium, the waves passing through them cause interference effects with each other for a specific frequency band determined according to the characteristics of the structure, such as the spacing of the rods, and propagate. There is a phenomenon that cannot be done.

In particular, this phenomenon related to optics is called a photonic bandgap (PBG).

The PBG phenomenon is applied to various physical and electronic fields such as semiconductor laser devices, selective reflectors, band pass filters and resonators.

Like light and electromagnetic waves, physically sound waves are a kind of wave, so there is an acoustic bandgap phenomenon similar to an optical bandcap.

The acoustic bandcap has not been studied relatively much compared to the optical or electromagnetic field.

However, in the mid-1990s, as the sound wave blocking phenomenon actually occurred in sculptures was reported, research results such as theoretical interpretation and experimental results for the technology related to acoustic bandcaps began to be published since the late 1990s.

As a technology to reduce noise by using such a structural shape, the sound-absorbing resonance type duct silencer for air conditioning in which attenuation is caused by sound absorption and resonance of sound waves of Korean Patent Publication No. 10-2010-134274 is shown in FIG. As described above, the outer cylinder 100 constituting the outside of the silencer, the flange 200 attached to the front and rear of the outer cylinder 100 to be connected to the duct before and after the silencer, and the inside of the outer cylinder 100 A splitter 300 manufactured by protecting the surface of a sound-absorbing plate that can absorb sound with a perforated plate manufactured by continuously perforating a plurality of holes in a thin plate, and the plurality of pieces are mounted side by side at regular intervals, and the above It is attached to the inner surface of the outer cylinder 100 exposed to the upper and lower portions of the air passage between the splitter 300 and the splitter at a predetermined distance from the surface of the outer cylinder, and a hole 402 of a predetermined size in a plate material 401 having a predetermined thickness. ) Consists of a resonance plate 40 manufactured by continuously perforating at regular intervals.

Another example is the noise-blocking structure and noise-blocking method using a perforated plate of Korean Patent Publication No. 10-2009-20670. It is a unit structure that is produced with a method of arranging a conventional shape and a method of making a square or circular structure that is combined with the arrangement of unit plates that are configured to reduce, cancel, and block the frequency of the noise source by combining two or more unit plates.

Here, in the above-described prior art, a plurality of holes are drilled in the sound-absorbing plate in a silencer provided in a duct and including a sound-absorbing plate, and a resonance plate formed in a plate shape with holes is further provided here.

Accordingly, sound waves are absorbed and resonated through a plurality of holes formed in the sound absorbing plate and the resonance plate to reduce low-frequency noise.

The prior art to be described later also discloses a technology for blocking noise by overlapping and arranging a plurality of metal plates having a plurality of holes perforated thereon.

The above-described prior art improves the existing silencer structure to attenuate noise by absorbing and resonating sound waves using the shape of a sound absorbing plate and a resonance plate with holes.

In other words, it can be said that the structure of the silencer is improved here while the structure in which the silencer is mounted on the existing duct is left as it is.

Therefore, the space occupied by the silencer is maintained as it is, and space utilization cannot be improved at all.

In addition, in the case of the above-described prior art, since the frequency range that can be blocked is fixed, there is a problem that it is difficult to apply to variously changing environments.

In addition, in the case of the prior art described later, not only does not have a specific noise blocking principle, but also aims to block high frequency, there is a problem that there is no significant difference from the case of using a sound-absorbing material.

On the other hand, as described above, the conventional sound-absorbing action is made only by structural changes of the mechanism, and thus there is a problem in that the use is limited.

That is, in a place where a large ship, a large building, or a large blower is used, a separate structure capable of blocking noise generated from the blower cannot be provided, and thus there are various problems caused by stress caused by noise.

This is, however, not limited to the blower, and the same problem occurs in turbines, engines, and the like.

For example, in a mobile engine, that is, a place where electricity cannot be artificially supplied at a construction site, or in a new development city, a self-generator or engine is installed and used so that electricity can be used when generating itself.

In this case, there is a problem in that the noise-induced stress is given to nearby workers or unspecified persons due to tremendous noise, as the self-generator, engine or turbine, etc., are not configured with a separate noise-blocking facility.

Due to the stress caused by such noise, complaints are filed with local governments in charge, and due to such complaints, the construction site must be temporarily suspended, resulting in huge financial damage due to delays in construction. .

Korean Patent No. 10-811747 Republic of Korea Utility Model Registration No. 20-405286 Korean Patent No. 10-1394885

As proposed in order to solve the above problems, the object of the present invention is to configure a sound-absorbing part on the inner side of the outer wall to perform the first reduction effect by the sound-absorbing effect, and to configure at least one silencer on one side of the outer wall It is to provide a building structure having a noise reduction effect by performing a secondary reduction action by the silencer, thereby providing a noise reduction building structure that enhances product competitiveness.

The present invention for achieving the above object, and an outer wall to form a building structure; A blower configured inside the outer wall; A sound-absorbing unit configured on the inside of the outer wall and configured to exhibit a primary reduction performance by a sound-absorbing action of noise generated by the blower; And at least one is configured on one side of the outer wall, a silencer configured to exhibit a secondary reduction performance by collision and splitting of the noise of the blower; characterized by comprising a.

In the present invention, it is preferable that the outer wall is constructed in a prefabricated manner, and is lifted as necessary, such as maintenance and repair, along with ease of construction, to facilitate internal maintenance.

In the present invention, the outer wall is one side of an operator or a manager can access, and an inspection port to facilitate maintenance work; A suction port configured on one side of the outer wall to allow external air to enter the blower; And an outlet configured on the other side of the outer wall so that the air discharged from the blower is easily discharged to the duct coupled to the outside.

In the present invention, the sound-absorbing unit comprises: a first cover composed of a rear plate and a side plate configured at the upper and lower ends of the rear plate to support the front side to be opened; A sound-absorbing material inserted into the front surface of the first cover to perform a sound-absorbing action; And a second cover configured on the front surface of the first cover to prevent the sound-absorbing material from being arbitrarily separated.

In the present invention, it is preferable that the side plate of the first cover is configured to be inclined at a certain angle, so that the sound absorbing portions stacked with each other are stably fixed.

In the present invention, it is preferable that the second cover includes a perforation for inducing a sound wave of noise to communicate with the inner sound absorbing material so that the offset effect is amplified.

In the present invention, the silencer comprises: an outer frame; A lower splitter configured at a lower end of the outer frame and configured to first cancel noise due to collision and splitting of sound waves; A central splitter configured to overlap the upper and lower ends of the lower splitter so that noise canceling due to collision and splitting of sound waves is secondarily performed; And an upper splitter configured to overlap the upper and lower ends of the central splitter so as to cancel noise due to collision and splitting of sound waves in a third order.

According to the present invention, by configuring a sound-absorbing part on the inner side of the outer wall to perform a first reduction effect by sound absorption, and by configuring at least one silencer on one side of the outer wall to perform a second reduction effect by the silencer, noise There is an effect of enhancing product competitiveness by providing a building structure with a reduction effect.

In addition, due to this noise-reducing building, the sound absorbing agent attached to the outer wall and ceiling has a heat dissipation effect that blocks external heat, preventing the heat from outside when the air temperature rises above 30℃ in hot weather to prevent overheating of equipment as well as various sensors. It also has the effect of protecting the facility.

1 is a sound-absorbing silencer structure showing an example of the prior art.
Figure 2 is a perspective view of a noise reduction building structure according to the present invention.
3 is a cross-sectional view of a noise reduction building structure according to the present invention.
Figure 4 is a perspective view of the sound-absorbing unit according to the present invention.
Figure 5 is a cross-sectional side view of a stacked state of the sound-absorbing unit according to the present invention.
6 is a cross-sectional view of a silencer according to the present invention.

Advantages and features of the present invention, and a method for achieving the same will become apparent with reference to the embodiments described below in detail together with the accompanying drawings.

However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various forms different from each other according to environmental conditions and characteristics and types of facilities, and only these embodiments are intended to complete the disclosure of the present invention, It is provided to fully inform the scope of the invention to those of ordinary skill in the art to which the present invention pertains, and the invention is only defined by the scope of the claims. The same reference numerals refer to the same elements throughout the specification.

Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques have not been described in detail in order to avoid obscuring interpretation of the present invention.

The terms used in this specification are for describing exemplary embodiments, and are not intended to limit the present invention. In this specification, the singular form also includes the plural form unless specifically stated in the phrase.

Comprises and/or comprising, as used in the specification, refers to the presence or addition of one or more other components, steps, operations and/or elements other than the mentioned elements, steps, operations and/or elements. It is used in a sense that does not exclude it.

And, “and/or” includes each and every combination of one or more of the recited items.

In addition, the embodiments described in the present specification will be described with reference to sectional views and/or schematic diagrams, which are ideal exemplary diagrams of the present invention.

Accordingly, embodiments of the present invention are not limited to the specific form shown, but also include a change in form generated according to a manufacturing process.

In addition, in each of the drawings shown in the present invention, each component may be somewhat enlarged or reduced in consideration of convenience of description.

Hereinafter, preferred embodiments of the present invention will be described in detail with reference to the accompanying drawings.

The noise reduction building structure of the present invention includes an outer wall 10, a blower 20, a sound-absorbing part 30, and a silencer 40, as shown in FIGS. 2 to 6.

The outer wall 10 functions to form the framework of the building structure.

The outer wall 10 may be used as long as it is possible to easily construct a building structure through simple construction such as a prefabricated panel method or an assembled structure.

In addition, one side of the outer wall 10 includes an inspection tool 12 for allowing an operator or a manager to enter the interior and perform simple maintenance work.

The inspection port 12 is configured on any one side of the outer wall 10, and any size can be used as long as it is large enough to allow an operator or a manager to easily enter and exit.

Further, one side of the outer wall 10 includes an inlet 14 for allowing air to enter the blower 20.

Further, the other side of the outer wall 10 includes an outlet 16 through which the air of the blower 20 is discharged to the outside and connected to a duct.

In addition, the outer wall 10 is configured to lift or move the entire building structure composed of the outer wall 10 when a major failure occurs therein.

The blower 20 performs a function of sucking air and discharging it to the outside as it has a pressure.

In this case, since the blower 20 generates severe noise to generate pressure, an outer wall 10 is installed to add or subtract damage to the surroundings due to noise generated from the blower 20.

The sound-absorbing part 30 is installed on the inner wall of the outer wall 10 and performs a function of absorbing noise generated by the blower 20.

The sound-absorbing part 30 includes a first cover 310, a sound-absorbing material 320, and a second cover 330, as shown in FIGS. 4 and 5.

The first cover 310 includes a rear plate 312 and a side plate 314 configured at the upper and lower ends of the rear plate 312, respectively.

The rear plate 312 performs a function of being configured to be in close contact with the inner surface of the outer wall 10.

The side plate 314 is configured at each of the upper and lower ends of the rear plate 312.

In addition, the side plate 314 is configured to be inclined at a certain angle, and when it is configured to be stacked upward, it is supported to maintain a stable seated state by the inclination.

In this case, the front surface of the first cover 310 is kept open, so that the sound absorbing material 320 may be inserted.

The sound-absorbing material 320 performs a function of substantially sound-absorbing.

In this case, the sound-absorbing material 320 is inserted through the open front surface of the first cover 310 and is configured inside the first cover 310.

The second cover 330 is in close contact with the front surface of the first cover 310 and functions to prevent the sound absorbing material 320 from being arbitrarily separated.

In addition, the second cover 330 has a plurality of perforations 332 for smoothly communicating noise so that the sound-absorbing action can be smoothly performed by the sound-absorbing material 320.

In this case, the perforated hole 332 is formed in a polygonal shape, such as a triangular shape, a square shape, or a hexagonal shape rather than a circular shape, so that the impact area with noise is enlarged to improve sound absorption.

In addition, at least one offset bent surface 334 is formed on the second cover 330 so as to protrude to the front.

As the canceling curved surface 334 is formed to protrude at a certain height on the front surface of the second cover 330, a sound wave of noise collides, thereby performing a function of causing a canceling action to occur by the collision force.

The sound-absorbing unit 30 configured as described above is configured to be stacked on the inner side of the outer wall 10, as shown in FIG. 5, and absorbs and cancels the sound waves of the noise inside the outer wall 10, thereby absorbing sound absorption. Improve.

The silencer 40 is configured on one side of the building structure formed by the outer wall 10, and by emitting noise generated inside the outer wall 10 to the outside, the outer wall 10 is It performs a function to prevent damage, etc.

In this case, the silencer 40 is configured with at least one or more at the top and side ends of the building structure.

In addition, the silencer 40 includes an outer frame 410, a lower splitter 420, a center splitter 430, and an upper splitter 440.

The outer frame 410 has one end fixed to one side of the building structure constituted by the outer wall 10, and the lower to upper splitters 420, 430, and 440 are stably fixed to the inside. It performs a supporting function.

The lower splitter 420 is configured at the lower end of the outer frame 410 and serves to induce a sound wave of noise traveling from the inner side to the outer side of the outer wall 10 to be split.

At this time, the lower splitter 420 has a first inclined surface 421 inclined at a predetermined angle and a first bent surface 422 formed at an upper end of the first inclined surface 421, for example, bent in the direction of the central splitter 430. As it is provided, it facilitates easy collision induction and splitting of sound waves.

The central splitter 430 has a second bent surface 431 spaced parallel to the lower side of the first bent surface 422, and a slope corresponding to the first inclined surface 421 at one end of the second bent surface 431 A third bent surface 433 bent in a direction opposite to the second bent surface 431 is provided on an upper end of the second inclined surface 432 and the second inclined surface 432 bent by. In this case, the second bent surface 431 and the first inclined surface 421, the second inclined surface 432 and the first bent surface 422 are spaced apart from each other. That is, the central splitter 430 is configured to have a lower end overlapping the upper side of the lower splitter 420, so that the sound waves first collided through the lower splitter 420 are induced to be subjected to secondary collision and splitting, To amplify the offset effect of

The upper splitter 440 has a slope corresponding to the second inclined surface 432 at one end of the fourth bent surface 441 and the fourth bent surface 441 disposed parallel to the lower side of the third bent surface 433 It has a third inclined surface 442 that is bent and formed. At this time, the fourth bent surface 441 and the second inclined surface 432, the third inclined surface 442 and the third bent surface 433 are spaced apart from each other. That is, the upper splitter 440 is configured such that the lower end is overlapped above the central splitter 430, so that the sound waves collided secondarily through the center splitter 430 are induced to be subjected to the third collision and splitting. By making the offset effect of the amplify, surely noise reduction is achieved.

In the noise-reducing building structure constructed as described above, the noise generated by the blower 20 configured inside the outer wall 10 is the first sound-absorbing action by the sound-absorbing unit 30 configured in the outer wall 10 to reduce the noise 1 Tea will achieve.

In addition, the sound waves of noise generated inside the outer wall 10 amplify the noise reduction effect by at least one silencer 40 configured in the building structure formed by the outer wall 10.

That is, by colliding and splitting the sound waves of the noise discharged from the inside of the outer wall 10 to the outside by the lower and central and upper splitters 420, 430, and 440 configured in the silencer 40, Amplifies and improves the noise reduction effect.

What has been described above is only one embodiment for implementing a noise reduction building structure, and the present invention is not limited to the above embodiment. Those of ordinary skill in the art to which the present invention pertains will appreciate that various modifications can be implemented according to the environmental conditions and characteristics and types of facilities without departing from the gist of the present invention.

10: outer wall 12: access port
14: inlet 16: outlet
20: blower 30: sound absorption unit
310: first cover 312: rear plate
314: side plate 320: sound absorbing material
330: second cover 332: perforated
334: offset curve 40: silencer
410: outer frame 420: lower splitter
430: center splitter 440: upper splitter

Claims (7)

An outer wall allowing the formation of an architectural structure;
A blower configured on the inside of the outer wall;
A sound-absorbing unit configured on the inner side of the outer wall and configured to exhibit a primary reduction performance by a sound-absorbing action of noise generated by the blower; And
At least one or more is configured on one side of the outer wall, a silencer configured to exhibit a secondary reduction performance by collision and splitting of the noise of the blower; includes,
The sound-absorbing part,
A first cover composed of a rear plate and a side plate configured at the top and bottom of the rear plate to support the front side to be opened;
A sound-absorbing material inserted into the front surface of the first cover to perform a sound-absorbing action; And
Includes; a second cover configured to prevent the sound-absorbing material from being arbitrarily separated from the front surface of the first cover,
In the second cover, a perforation for inducing a sound wave of noise to communicate with the inner sound absorbing material to amplify a canceling effect is formed, and at least one canceling bent surface is formed so as to protrude to the front side,
The silencer,
Outer frame;
A lower splitter configured at the lower end of the outer frame and configured to first cancel noise due to collision and splitting of sound waves;
A central splitter configured to overlap the upper and lower ends of the lower splitter so that noise canceling due to collision and splitting of sound waves is secondarily performed; And
And an upper splitter configured to overlap the upper and lower ends of the central splitter so as to cancel noise due to collision and splitting of sound waves in a third order.
The method according to claim 1, wherein the outer wall,
A noise-reducing architectural structure, characterized in that it is constructed in an assembly type, and is lifted as necessary to facilitate internal maintenance with ease of construction.
The method according to claim 1, wherein the outer wall,
An inspection hole configured on one side to allow an operator or an administrator to enter and exit to facilitate maintenance work;
A suction port configured on one side of the outer wall to allow external air to enter the blower; And
An outlet configured on the other side of the outer wall so that the air discharged from the blower is easily discharged to a duct coupled to the outside;
Noise reduction building structure comprising a.
delete The method according to claim 1, wherein the side plate of the first cover,
A noise reduction building structure, characterized in that it is configured to be inclined at a certain angle, and is configured to stably fix the sound-absorbing units stacked on each other.
delete The method according to claim 1,
The lower splitter 420 has a first inclined surface 421 inclined at a predetermined angle and a first bent surface 422 bent to one side at an upper end of the first inclined surface 421,
The central splitter 430 has a second bent surface 431 spaced parallel to the lower side of the first bent surface 422, and a slope corresponding to the first inclined surface 421 at one end of the second bent surface 431 It has a second inclined surface 433 bent in a direction opposite to the second bent surface 431 at the upper end of the second inclined surface 432 and the second inclined surface 432 bent by,
The upper splitter 440 has a slope corresponding to the second inclined surface 432 at one end of the fourth bent surface 441 and the fourth bent surface 441 disposed parallel to the lower side of the third bent surface 433 A noise reduction building structure, characterized in that it has a third inclined surface 442 that is bent and formed.

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