KR101313925B1 - Pair glass having noise reduction effect - Google Patents

Abstract

The present invention relates to a multilayer glass having a noise reduction effect, and more particularly, to a multilayer glass that can be applied to a multilayer glass having various specifications by applying a resonance module and can be easily applied to an automated facility.
The present invention is fixed to be spaced apart from each other two sheets of glass to form a space between; And a resonance module having an open box shape on one side thereof, and the open one surface attached to be closed by an inner surface of one of the two panes. And a sound absorption hole provided in the resonance module.

Description

Laminated glass which improved noise reduction effect {PAIR GLASS HAVING NOISE REDUCTION EFFECT}

The present invention relates to a multilayer glass having a noise reduction effect, and more particularly, to a multilayer glass that can be applied to a multilayer glass of various standards by applying a resonance module and can be easily applied to an automated facility.

Recently, according to the demands of consumers who want a comfortable life, the interest in the noise blocking performance of building windows has increased due to the policy of strengthening the noise regulation of apartment houses.

In order to improve the noise blocking performance of windows and doors, the airtightness of windows is increased, or a method of using laminated glass manufactured using sound-shielding glass or thick glass on the glass part of windows is used. Compared to this, the cost increases and the weight increases.

For the purpose of weight and cost, residential double-layer glass is usually used for residential buildings.

However, it has been found that the structure of ordinary multilayer glass exhibits high noise blocking performance at high frequencies but decreases the noise blocking performance due to resonance transmission at low frequencies.

In order to solve the noise blocking performance degradation caused by the resonance transmission phenomenon, Korean Patent No. 10-0516370 attaches inertial weights incorporating vibration damping material to one glass of the multilayer glass so that the resonance transmission phenomenon occurs between the two glass plates. A method of preventing this is disclosed.

In this patent, the inertial weight of opaque metal of 30 ~ 50 mm should be attached to the interior glass surface at intervals of 20 ~ 30 cm, so that the inertial weight protruding into the interior can easily fall off, and it is inconvenient to clean the glass, Not desirable

Japanese Laid-Open Patent Publication No. 1998-182193 discloses a hollow tubular body in which a phase difference occurs between a sound passing through an air portion in the air layer and a sound passing through a hollow tubular body portion provided in the air gap layer. The soundproof glass which arrange | positioned is disclosed.

The multilayer glass described in this patent has a problem that the operation of fixing a relatively thin and long glass tube (hollow tube body) to the glass plate at regular intervals is not easy.

Japanese Laid-Open Patent Publication No. 2002-3569345 discloses a multilayer glass structure in which a Helmholtz resonator is installed between a pair of plates, and Japanese Laid-Open Patent Publication No. 2004-205992 has a resonator in a multilayer glass having a resonator between plate glass. The resonance frequency of the resonator is designed so that 1/3 to 2/3 octave bands deviate to the high frequency side than the resonance transmission frequency of the non-laminated glass, and the multilayer glass showing the noise blocking effect in the wide frequency range as well as the low frequency band is presented. It was. In this patent, in the installation of a resonator, resonance bars are installed in parallel at regular intervals along a spacer of plate glass, or the resonance bars and spacers are integrally designed.

The structure of the resonator is very desirable in appearance in that the resonator is installed at the periphery of the laminated glass, not the center of the laminated glass, but a lot of time and attention to the operation of attaching the resonator rod to the plate glass to maintain a constant distance from the spacer of the laminated glass There is a problem in that it is not easy to manufacture a multilayer glass because it is necessary to prepare a customized resonance rod according to the size of the laminated glass.

Conventionally, in the case of a large sized glass, a long time was required for attaching a thin and long resonance rod to a glass plate so as to maintain a constant distance from the multilayer glass spacer, and the multilayer glass manufacturing industry required to produce multilayer glass of various thicknesses and sizes. Due to the nature of the need to prepare a resonant rod of a custom size has caused a decrease in the laminated glass productivity, it was difficult to apply to the automated production process of multilayer glass, such as thermoplastic spacers or super spacers as well as general AL spacer.

SUMMARY OF THE INVENTION An object of the present invention is to provide a multilayer glass having improved sound insulation performance by using a resonance module that does not have to prepare a customized resonance rod according to a multilayer glass having various thicknesses and sizes in a multilayer glass having a noise reduction effect.

Another object of the present invention is to provide a laminated glass which can be produced through an automated laminated glass manufacturing process such as thermoplastic spacers or super spacers as well as AL spacers.

The present invention is fixed to be spaced apart from each other two sheets of glass to form a space between; A resonance module having one side of an open box shape, the open one side of which is attached to be closed by an inner surface of one of the two panes; And a sound absorption hole provided in the resonance module.

The resonance module includes a side body of which the upper and lower sides are opened, and a flat plate connected to the upper surface of the side body. At this time, the side body and the plate may be integrally formed.

The sound absorbing hole may be formed in a direction perpendicular to the surface of the plate glass, and the upper surface of the plate may be disposed to be spaced apart from the inner surface of the plate glass by 2 mm or more.

In addition, the sound absorbing hole may be formed in a direction parallel to the surface of the plate glass on the side facing the central portion of the separation space of the resonance module.

On the other hand, the resonance module is preferably the plate is a transparent material.

The resonance module may include a plurality of sound absorbing holes, and the multilayer glass may include a plurality of resonance modules.

In addition, the present invention is fixed to be spaced apart from each other two sheets of glass to form a space between; A resonance module having a closed box shape and having one surface attached to an inner surface of one of the two panes; And a sound absorption hole provided in the resonance module.

The resonance module includes an upper body having a box shape with an open lower surface; and a lower body having a box shape with an open upper surface. The resonance module may be fitted to the upper body and the lower body.

The multilayer glass having a noise reduction effect according to the present invention is prepared by preparing a modular resonator having a relatively small size in advance and then attaching it to the multilayer glass, thereby making it inconvenient to manufacture a customized resonator according to the size of the multilayer glass. Can be solved.

In addition, in the manufacture of a comparatively large sized glass is a long resonant rod is bent by its own weight, so much care is required to produce a laminated glass, while the resonator module according to the present invention does not need to be careful about the bending. If the thickness of the air layer inside the multilayer glass is not less than a certain thickness, all can use the same resonance member has an effect that makes it easier to manufacture a multilayer glass having a noise reduction effect.

In addition, the multilayer glass having a noise blocking effect according to the present invention, because the resonance module is bonded or connected to a single plate glass irrespective of the multilayer glass rod, as well as using a thermoplastic glass rod or a super spacer as well as a multilayer glass using an existing AL rod. The effect is that it can be applied to automated laminated glass manufacturing equipment such as laminated glass.

1 is a graph showing the acoustic transmission loss of single glass, normal glass, and sound insulation glass.
2 is a view showing a front structure of the multilayer glass according to the first embodiment of the present invention;
3 is a view showing a cross-sectional structure of the multilayer glass according to the first embodiment of the present invention,
4 and 5 are a perspective view and an exploded perspective view showing an example of the resonance module of the multilayer glass according to the present invention,
6 and 7 are a perspective view and an exploded perspective view showing another example of the resonance module of the multilayer glass according to the present invention;
8 is a view showing a front structure of a multilayer glass according to a second embodiment of the present invention;
9 is a view showing a cross-sectional structure of the laminated glass according to a second embodiment of the present invention.

Hereinafter, with reference to the accompanying drawings will be described with respect to the laminated glass to improve the noise reduction effect of the present invention.

Advantages and features of the present invention, and methods for achieving them will be apparent with reference to the embodiments described below in detail in conjunction with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below, but may be implemented in various different forms, only the present embodiments to make the disclosure of the present invention complete, and common knowledge in the technical field to which the present invention belongs. It is provided to fully inform the person having the scope of the invention, which is defined only by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

1 is a graph showing the acoustic transmission loss of single glass, normal glass, and sound insulation glass.

In the present invention, the sound absorption frequency of the resonator module is characterized in that 150 to 400 Hz. The inherent resonance transmission frequency of the laminated glass of the general structure is usually a low range frequency of 200 to 500 Hz, and at this frequency, the sound insulation performance of the laminated glass is significantly lowered than that of the single glass due to the resonance transmission phenomenon.

Therefore, by selecting and designing variables for determining the sound absorption frequency of the resonator module according to the resonance transmission frequency of the multilayer glass, it is possible to improve the sound insulation performance in the frequency band centered on the multilayer glass resonance transmission frequency of the low frequency range.

2 is a view showing the front structure of the laminated glass according to the first embodiment of the present invention, Figure 3 is a view showing a cross-sectional structure of the laminated glass according to the first embodiment of the present invention.

Multi-layer glass with improved noise reduction effect according to the invention is characterized in that the resonance module is provided inside, to improve the sound insulation effect through the resonance module. In addition, while the conventional resonance module was made in a customized form along the rim of the multilayer glass, the present invention is modularized to form a resonance module that can function independently of the shape of the plate glass to the standard of the multilayer glass Regardless, a certain resonance module can be applied.

The multi-layered glass according to the first embodiment of the present invention is fixed in a state separated from each other two sheets of glass (112, 114) to form a space (S) between, and the resonance module disposed in the space (S) 120 and a sound absorbing hole 126 provided in the resonance module. The first embodiment is characterized in that the sound absorbing hole 126 is formed in a direction perpendicular to the surfaces of the panes 112 and 114.

The gap between the plate glass 112 and 114 is maintained by the liver rod 115, the liver rod 115 is attached to the inner surface of the plate glass by the primary sealant 116, the edge portion back to the secondary sealant 117 Is sealed. Since the formation of the multilayer glass using the sealants 116 and 117 and the liver rod 115 is the same as that of the general multilayer glass, the description thereof will be omitted.

The present invention is characterized by using a resonator module 120 is a modular resonator. The resonance module 120 has a box shape with one surface open, and has a sound absorbing hole 126. The open side of the resonance module 120 has a structure that is closed by the inner surface of one side of the two sheets of glass. The resonance module 120 is composed of a Helmholtz resonator that reduces the sound by converting the sound introduced into the sound absorbing hole 126 into thermal energy in the internal space.

In the present invention, the "box shape" refers to a shape partitioning the sound absorbing space therein, but may be rectangular, polygonal, cylindrical, hemispherical, and the like, but is not limited thereto.

4 and 5 are a perspective view and an exploded perspective view showing an example of the resonance module of the multilayer glass according to the present invention.

The resonance module 120 has a box shape with one surface open, and is connected to an open upper surface 122a of the side body 122 and an open upper and lower sides to define a side surface of the sound absorbing space. It includes a flat plate 124 for partitioning the upper surface of the sound absorbing space. The lower surface of the sound absorbing space is partitioned by the inner surface of one of the two panes.

At this time, the flat plate 124 is preferably formed of a transparent material. The flat plate 124 is disposed in parallel with the plate glass, and when the flat plate 124 is an opaque material, the opacity is increased in the finished multilayer glass, thereby degrading the merchandise.

If the side body 122 is also preferably a transparent material, the side body 122 is not the surface is visible but the thickness is visible, so when the thickness is thin, the area to be seen is small, so the need to use a transparent material is relatively low.

In the illustrated embodiment, the side body 122 and the flat plate 124 are separately formed and connected, or the side body 122 and the flat plate 124 may be integrally formed.

The flat plate 124 may be made of transparent glass or transparent plastic material. It is preferable to select the thickness of the flat plate 124 in the range of 2-5 mm from an external viewpoint or a manufacturing viewpoint. When the thickness of the flat plate 124 is less than 2mm, bending or distortion may occur in manufacturing, and when the thickness of the flat plate 124 exceeds 5mm, the sound absorbing hole 126 may not be easily processed.

In the illustrated example, the sound absorbing hole 126 is formed in the flat plate 124, but in the second embodiment, the sound absorbing hole 126 is formed in the side body 122.

The length L of the resonance module is preferably in the range of 200 to 500 mm from the viewpoint of appearance or manufacture. If the length (L) of the resonance module is less than 200mm, when manufacturing a large-sized multilayer glass is too large number of installation of the resonator module is called in the process. In addition, when the length (L) of the resonance module exceeds 500mm, there is a high risk of bending or distortion when the resonance module is attached to the plate glass. Attachment of the resonance module may use a separate adhesive, or a method of melting by fusing the attachment surface of the resonance module.

The width W of the resonance module is preferably in the range of 30 to 50 mm in terms of appearance and manufacturing. If the width W of the resonance module is less than 30mm, bending or warping of the resonance module may occur, and if the width W of the resonance module exceeds 50mm, the visible portion of the multilayer glass is not preferable because it is more visible.

In the range where the total thickness of the resonance module is 10 mm or less, the thickness t1 of the flat plate 124 and the height H of the side body 122 should be selected. As the height of the side body 122 is higher within the above range, it is easier to design the sound absorption frequency of the resonator to 400 Hz or less. Therefore, the height of the side body 122 is preferably in the range of 5 ~ 8mm.

The diameter (D) of the sound absorption hole 126 is preferably in the range of 0.5 ~ 2.0mm. If the diameter of the sound absorbing hole 126 exceeds 2.0mm, it is difficult to design the sound absorbing frequency of the resonance module to 400 Hz or less.

The interval P of the sound absorbing hole 126 is preferably in the range of 40 to 100 mm. If the distance P of the sound absorbing hole 126 is less than 40 mm, it is difficult to design the sound absorbing frequency of the resonance module to be 400 Hz or less, and if the distance P of the sound absorbing hole 126 exceeds 100 mm, one resonance module may be used. The number of sound absorbing holes 126 provided in the is less sound insulation performance.

The thickness t2 of the side body 122 is preferably in the range of 2 to 10 mm. If the thickness of the side body is less than 2mm, the area where the resonance module is adhered to the plate glass is not enough, and the adhesive force is weakened. If the thickness of the side body is more than 10mm, the portion of the multilayer body that damages the field of view of the multilayer glass is preferable. Not.

In addition, the upper surface of the flat plate 124 is preferably disposed to be spaced apart by more than 2mm from the inner surface of the plate glass. When the distance between the flat plate 124 and the inner surface of the pane becomes less than 2 mm, the sound absorption effect is reduced.

In the first embodiment, the sound absorbing hole 126 is formed perpendicular to the flat plate 124. However, since the flat plate 124 is disposed in parallel with the plate glass, the sound absorbing hole 126 is formed in a direction perpendicular to the surface of the plate glass. Since the sound is transmitted by the vibration of the plate glass inside the plate glass to improve the sound absorption efficiency.

6 and 7 are a perspective view and an exploded perspective view showing another example of the resonance module of the multilayer glass according to the present invention.

The resonance module of the previous embodiment has a box shape in which one side is open, and the open side has a structure in which the open side is closed by the inner surface of one of the two panes, but this embodiment has a box in which the resonance module itself is sealed. It has a shape.

As shown, the resonance module 140 includes an upper body 142 having a box shape with an open bottom, and a lower body 144 having a box shape with an open top. And the upper body 142 and the lower body 144 is fitted to form a closed space independently therein. In addition, in the illustrated embodiment, although the sound absorbing hole 146 is formed on the upper surface of the upper body 142, the sound absorbing hole 146 may be formed on the side of the upper body 142.

If the resonance module 140 itself forms a closed space, it is easier to attach the resonance module to the pane. In the case of the previous embodiment, the part corresponding to the thickness of the side body should be attached to the surface of the plate glass, whereas the bottom surface of the lower body of this embodiment is attached to the inner surface of the plate glass. Can be.

8 is a view showing the front structure of the laminated glass according to the second embodiment of the present invention, Figure 9 is a view showing a cross-sectional structure of the laminated glass according to the second embodiment of the present invention.

The second embodiment is characterized in that the sound absorbing hole 226 of the resonance module 220 is formed on the side facing the center of the separation space. In this case, the sound absorbing hole 226 penetrates the side body 224 of the resonance module 220 in a direction parallel to the plate glass surface.

As described above, the sound is transmitted in the separation space (S) is made by the vibration of the plate glass, so that the sound absorbing hole 226 toward the center of the separation space (s) more sound to the sound absorption hole 226. It is to be introduced.

In the second embodiment, the length L of the resonance module is preferably in the range of 200 to 500 mm in terms of appearance and manufacturing. If the length (L) of the resonance module is less than 200mm, when manufacturing a large-sized multilayer glass is too large number of installation of the resonator module is called in the process. In addition, when the length (L) of the resonance module exceeds 500mm, there is a high risk of bending or distortion when the resonance module is attached to the plate glass. Attachment of the resonance module may use a separate adhesive, or a method of melting by fusing the attachment surface of the resonance module.

The width W of the resonance module is preferably in the range of 30 to 50 mm in terms of appearance and manufacturing. If the width W of the resonance module is less than 30mm, bending or warping of the resonance module may occur, and if the width W of the resonance module exceeds 50mm, the visible portion of the multilayer glass is not preferable because it is more visible.

The diameter (D) of the sound absorbing hole 226 is preferably in the range of 0.5 ~ 2.0mm. If the diameter of the sound absorbing hole 226 exceeds 2.0mm, it is difficult to design the sound absorbing frequency of the resonance module to 400 Hz or less.

The interval P of the sound absorbing hole 226 is preferably in the range of 40 ~ 100mm. If the distance P of the sound absorbing hole 226 is less than 40 mm, it is difficult to design the sound absorption frequency of the resonance module to be 400 Hz or less, and if the distance P of the sound absorbing hole 226 exceeds 100 mm, one resonance module Since the number of the sound absorbing holes 226 provided in the is less sound insulation performance.

The thickness t2 of the side body 222 is preferably in the range of 2 ~ 10mm. If the thickness of the side body is less than 2mm, the area where the resonance module is adhered to the plate glass is not enough, and the adhesive force is weakened. If the side body thickness is more than 10mm, the portion of the multilayer body that damages the field of view of the multilayer glass is relatively large. The sound absorbing hole 226 is not easy to process, which is not preferable.

<Experimental Example>

In general, the sound absorption frequency f ₀ of a Helmholtz resonator is expressed by the following equation.

Where f0 is the sound absorption frequency of the resonator module, c is the sound velocity (= 340 + 0.6T m / sec2), s is the cross-sectional area of the sound absorption hole (= π (D / 2) 2), and V is the volume of the internal space of the resonator module. , t is the length of the sound absorption hole, D is the diameter of the sound absorption hole.

Experimental Example 1

Two sheets of 5 mm thick plate glass were used to prepare a multilayer glass having a space of 12 mm thick and filled with dry air or argon gas in the space. The resonant transmission frequency of such laminated glass is 220 to 240 Hz.

In the multilayer glass, the resonance module according to the first embodiment has a plate thickness (t1) of 5 mm, a sound absorption hole diameter (D) of 1 mm, a sound absorption hole spacing (P) of 50 mm, a side body height (H) of 5 mm, and a width of the resonance module ( W) 30 mm was prepared. The resonance module has a sound absorption frequency of about 230 Hz.

Experimental Example 2

Two sheets of 6 mm thick plate glass were used to prepare a multilayer glass having a space of 12 mm thick and filled with dry air or argon gas in the space. The resonant transmission frequency of such laminated glass is 220 to 240 Hz.

In the multilayer glass, the resonance module according to the second embodiment has a plate thickness (t1) of 2 mm, a thickness of the side body (t2) of 5 mm, a side body height (H) of 6 mm, a width of the resonance module (W) of 30 mm, and a sound absorbing hole diameter. (D) 1 mm, the sound absorbing hole spacing (P) 50mm. The resonance module has a sound absorption frequency of about 210 Hz.

Experiment result

The acoustic attenuation coefficient (acoustic transmission loss) measured by the laboratory according to KS F 2808 for the sound insulation performance (Rw) of the laminated glass without resonance module and the laminated glass with resonance module was evaluated according to KS F 2862. This is a numerical evaluation amount.

Looking at the experimental results of Table 1, it can be seen that the sound insulation performance is improved by 2dB due to the installation of the resonance module according to the present invention.

100, 200: laminated glass
120, 140: resonance module
122: side body
124: reputation
126: sound absorption hole
142: upper body
144: lower body
146: sound absorption hole

Claims (13)

Two sheets of glass that are fixed to be spaced apart from each other to form a space therebetween;
A resonance module having one side of an open box shape, the open one side of which is attached to be closed by an inner surface of one of the two panes; And
Multi-layer glass comprising a; sound absorption hole provided in the resonance module.
The method of claim 1,
The resonance module
The side body with the upper and lower sides open,
Laminated glass, characterized in that it comprises a flat plate connected to the upper surface of the side body.
3. The method of claim 2,
The sound absorbing hole
The laminated glass, characterized in that provided on the side body or the flat plate.
3. The method of claim 2,
The laminated glass, characterized in that the side body and the plate is formed integrally.
The method of claim 1,
The sound absorption hole is laminated glass, characterized in that formed in a direction perpendicular to the surface of the plate glass.
3. The method of claim 2,
The upper surface of the plate is laminated glass, characterized in that arranged to be spaced apart from the inner surface of the plate glass by more than 2mm.
3. The method of claim 2,
The sound absorbing hole
On the side body facing the center of the separation space
The multilayer glass, characterized in that formed in a direction parallel to the surface of the plate glass.
3. The method of claim 2,
The resonance module
The laminated glass, characterized in that the plate is a transparent material.
The method of claim 1,
The multilayer glass is a multilayer glass, characterized in that it comprises a plurality of resonance modules.
The method of claim 1,
The sound absorbing hole
Multi-layer glass, characterized in that provided in a plurality of resonance module.
Two sheets of glass that are fixed to be spaced apart from each other to form a space therebetween;
A resonance module having a closed box shape and having one surface attached to an inner surface of one of the two panes; And
Multi-layer glass comprising a; sound absorption hole provided in the resonance module.
The method of claim 11,
The resonance module
An upper body having a box shape with an open lower surface; and
And a lower body having an open upper box shape.
13. The method of claim 12,
The multilayer glass, characterized in that the upper body and the lower body is fitted.

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