KR20100133526A - Pair glass spacer having noise reduction effect - Google Patents

Abstract

PURPOSE: A pair glass spacer having noise reduction effect is provided to improve the sound-absorbing property of pair glass by being formed in a helmholtz resonator shape. CONSTITUTION: A pair glass spacer having noise reduction effect comprises a resonant member(20) and a space member(30). The resonant member comprises an upper plate(21), a left plate(22,31), lower plates(23,32) and right plates(24,33) which are connected in a box shape. The upper plate has sound absorbing holes(25). The spacer member, to which the left plate, the lower plates and the right plates are connected, is coupled to the lower part of the resonant member and has an open top.

Description

Pair glass spacer having noise reduction effect

The present invention relates to a liver rod provided between the outer glass and the inner glass of the multilayer glass, and more particularly, to a multilayer glass liver rod having a noise reduction effect.

Recently, the demand for sound insulation of windows and doors is increasing according to the demand of consumers who want a comfortable life in accordance with the eco-trend. In addition, the sound insulation performance requirements of windows and doors due to the strengthening of noise regulation of apartment buildings is increasing.

In accordance with this, a method of increasing the airtightness of windows and windows or using laminated glass having a noise reduction function as glass, which is an accessory of windows, has been widely used.

However, there is no noise reduction technology in glass except for the method of using laminated glass or sound insulating laminated glass or using thick glass as noise reduction technology. However, the method of using laminated glass or thick glass is disadvantageous in terms of cost and is not widely used. In most windows, single glass or general multilayer glass is used.

FIG. 6 is a perspective view illustrating a structure of a general multilayer glass, in which a liver bar 3 is installed between the outer glass 1 and the inner glass 2, and a moisture absorption hole 4 is formed in the upper part of the liver bar 3. The inside space of the liver rod 3 is filled with the absorbent 5. The trunk rod 3 is bonded to the outer glass 1 and the inner glass 2 by the primary adhesive 6, and a secondary adhesive 7 is attached to the lower portion of the trunk rod 3.

Japanese Laid-Open Patent Publication No. 2004-205992 discloses a multilayer glass having at least two sheets of glass polymerized at predetermined intervals by spacers provided at the periphery, and a hollow layer between the glass panes, and having a resonator between the glass panes. The resonator frequency of the resonator has been disclosed to deviate from the resonance transmission frequency of the multilayer glass in the absence of a resonator on the 1/3 to 2/3 octave band high-frequency side. In this patent, a resonator in the form of a bar resembling a lattice of multilayer glass requires an additional resonator attachment process in addition to the aluminum (AL) encapsulation process, resulting in an additional resonator insertion cost in addition to the existing multilayer glass process cost.

Japanese Patent Application Laid-Open No. 1998-182193 discloses a hollow tubular body in which a phase difference occurs between a sound passing through an air portion in the gap layer and a sound passing through a hollow tubular body portion provided in the gap layer. The soundproof glass which arrange | positioned is disclosed. However, the multilayer glass described in this patent has not considered the relationship between the resonance frequency of the hollow tubular body and the inherent resonance transmission frequency of the multilayer glass in the absence of the hollow tubular body, and thus the optimum soundproof structure corresponding to the shape of the multilayer glass, etc. Cannot be designed. In addition, the structure is complicated and the production is not easy, and the hollow tube is also installed near the central portion in the plane of the pane, which is not preferable in appearance.

Japanese Patent Laid-Open Publication No. 2002-356934 discloses a soundproof structure in which a resonator is provided between a pair of plate members in a soundproof structure provided with a pair of plate members at predetermined intervals. However, in the soundproof structure described in this patent, it is not possible to prevent resonance transmission phenomenon in a wide range by targeting only a single narrow range.

An object of the present invention is to provide a multi-layer glass ganbong by increasing the sound insulation performance by applying a noise reduction technology to the ganbong, a secondary glass subsidiary material, to increase the sound insulation performance in the most widely used multilayer glass.

The present invention, in order to achieve the above object, in the liver rod provided between the outer glass and the inner glass of the multilayer glass, the liver rod is composed of a resonance member and a spacer member coupled to the lower portion of the resonance member, the resonance member is a top plate member , A box-shaped structure in which the seat plate member, the bottom plate member and the right plate member are integrally connected, have a space inside the box structure, a sound absorption hole is formed in the top plate member, and the seat member, the bottom plate member and the right plate member are integrated in the spacer member. Provides a multi-layer glass liver bar, characterized in that having an open structure while being connected to.

In the present invention, the sound absorption frequency of the resonance member represented by the following formula is characterized in that 150 to 400 Hz. In general, the inherent resonance transmission frequency of a multilayer glass is a frequency of low frequency range (200-500 Hz) normally, and a resonance transmission phenomenon arises by this frequency, and sound insulation performance falls. Therefore, by selecting and designing the parameters for determining the resonance frequency of the resonance member to have the same resonance frequency as that of the laminated glass, it is possible to improve the sound insulation performance in the frequency band centered on the resonance frequency of the low range.

In the above formula, Wn is the sound absorption frequency of the resonance member,

c is the speed of sound (about 343 m / s),

S is the cross-sectional area of the sound absorbing hole (S = πa ² , a is the radius of the sound absorbing hole)

V is the volume of the internal space of the resonance member,

l is the length of the sound absorbing hole.

In the present invention, the lower plate member and the right plate member of the resonance member is formed with a groove portion, the lower plate member of the resonance member is extended to form a protrusion, the groove portion and protrusion of the resonance member on the upper plate member and the right plate member of the spacer member and Engaging protrusions and grooves are formed, and the resonance member and the spacer member are coupled by mutual coupling of the grooves and the protrusions of the resonance member and the spacer member, and a space may be formed inside the spacer member.

In the present invention, the moisture absorption hole is formed in the lower plate member of the resonance member, and the moisture absorbent may be filled in the inner space of the spacer member.

In addition, the present invention is a multi-layer glass in which the liver is provided between the outer glass and the inner glass, wherein the liver is made of a resonance member and a spacer member coupled to the lower portion of the resonance member, the resonance member is the upper plate member, seat plate member, lower plate The member and the right plate member has a box-like structure integrally connected, has a space inside the box structure, a sound absorption hole is formed in the upper plate member, the spacer member is connected to the upper plate member, the lower plate member and the lower plate member integrally Provided is a multilayer glass having an open structure.

According to the present invention, the structure of the laminated glass liver rod is designed in the shape of a Helmholtz resonator to increase the sound insulation performance of the multilayer glass. There is an advantage that can be manufactured at the same cost as the glass process cost.

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

1 is a perspective view and a partially enlarged view illustrating a structure of a multilayer glass to which a multilayer glass trunk is applied according to the present invention, and the sound insulation trunk of the present invention is installed between the outer glass 10 and the inner glass 11 of the multilayer glass. , The resonance member 20 and the spacer member 30 coupled to the lower portion of the resonance member 20.

An internal space of the spacer member 30 is filled with a moisture absorbent 40 for removing condensation or moisture, and a secondary sealant 50 for sealing the multilayer glass is formed under the spacer member 30. Although not shown in the figure, there is a primary sealant for attaching the resonance member 20 and the spacer member 30 to the outer glass 10 and the inner glass 11. Butyl (non-curable sealant based on polyisobutylene) may be used as the primary sealant, and thiol may be used as the secondary sealant.

2 is a perspective view and a cross-sectional view showing a structure of a multilayer glass liver rod according to the present invention, the sound insulation trunk of the present invention consists of a resonance member 20 and a spacer member 30 of the multilayer glass.

The resonance member 20 and the spacer member 30 are made of a material such as plastic, metal, for example, the resonance member 20 is made of a plastic material, the spacer member 30 is made of a metal material such as aluminum It is also possible to use the same material for both members. The resonance member 20 and the spacer member 30 are molded and fabricated in a unitary structure, respectively, by a method such as extrusion using a material such as plastic or metal.

The resonance member 20 is designed in the shape of a Helmholtz resonator, specifically, has a box-like structure in which the upper plate member 21, the seat plate member 22, the lower plate member 23, and the right plate member 24 are integrally connected. It has an internal space having a constant volume (V) inside the box structure, the upper plate member 21 is formed with a sound absorbing hole 25 corresponding to the neck of the Helmholtz resonator described later.

Grooves 27 are formed in the lower plate member 22 and the right plate member 24 of the resonance member 20, and the lower plate member 23 of the resonance member 20 extends to form a protrusion 28. In addition, a moisture absorbing hole 26 is formed in the lower plate member 23 of the resonance member 20 so as to be connected to the internal space of the spacer member 30 filled with the moisture absorbent 40. The hygroscopic holes 26 are typically circular and have a diameter of 0.1 to 5 mm.

The spacer member 30 has a structure in which the top plate member 31 is open while the seat plate member 31, the bottom plate member 32, and the right plate member 33 are integrally connected to each other.

Grooves 34 and protrusions 35 are formed in the upper plate member 31 and the right plate member 33 of the spacer member 30, and the resonance member 20 is formed in the groove 34 of the spacer member 30. The protrusion 28 of the spacer member 30 is inserted, and the protrusion 35 of the spacer member 30 is inserted into the groove 27 of the resonance member. Due to mutual coupling of the grooves 27 and 34 and the protrusions 28 and 35 of the resonance member 20 and the spacer member 30, the resonance member 20 and the spacer member 30 are coupled, and the two members 20 The space is formed inside the spacer member 30 due to the combination of the two and the second and second ones. An internal space of the spacer member 30 may be filled with an absorbent 40 such as zeolite.

Figure 3 shows the principle and structure of the Helmholtz resonator, the Helmholtz resonator is a sound of a specific frequency is converted into thermal energy as it passes through the neck of the specific structure (Helmholtz resonator).

Figure 4 shows the principle and structure of applying the Helmholtz resonator to the multi-layered glass stem of the present invention, the internal volume (V) of the Helmholtz resonator corresponds to the internal space volume (V) of the resonance member 20, Helm The cross sectional area S and the length 1 of the neck of the Holtz resonator correspond to the cross sectional area S and the length 1 of the sound absorbing hole 25, respectively.

The internal space volume V of the resonance member 20, the cross-sectional area S of the sound absorption hole 25, and the sound absorption frequency Wn of the resonance member 20 represented by Equation 1 are 150 to 400 Hz, and Adjust the length (l). As such, by designing the above parameters of the resonance member 20 to have the same resonance frequency as the laminated glass, it is possible to improve the sound insulation performance in the frequency band centered on the resonance frequency of the low range.

FIG. 5 is a graph comparing sound insulation performance of a multilayer glass liver rod and a general liver rod according to the present invention (t means thickness (unit: mm), and STL (Sound Transmission Loss) means acoustic transmission loss) According to the invention, the laminated glass using the sound insulation rod is 1 to 2 dB better sound insulation performance than the laminated glass using the AL AL rod.

In particular, as can be seen in Figure 5, by designing the sound absorption frequency (Wn) of the resonance member 20 to 150 to 400 Hz, the sound insulation performance in the above frequency range is superior to the general AL liver bar.

Table 1 compares the sound insulation performance (Rw) of the laminated glass using the sound insulation rod and the laminated glass using the general AL liver rod according to the present invention (t means thickness (unit: mm)). Where Rw is a single numerical evaluation of the acoustic attenuation coefficient (acoustic transmission loss) measured in the laboratory according to KS F 2808 according to KS F 2862.

6t plate glass + 12t air + 6t plate glass 8t plate glass + 12t air + 5t plate glass General AL 33 36 Gaebongbong 35 37

As can be seen in Table 1, according to the present invention, the laminated glass using the sound insulation between the bar is superior to the sound insulation performance of 1 to 2 dB compared to the laminated glass using the normal AL liver.

The present invention can increase the sound insulation performance of the multilayer glass by designing the multilayer glass liver bar as a Helmholtz resonator, and the manufacturing process of the sound insulation bar is manufactured at the same cost as the existing multilayer glass process cost as it is the same as the general AL liver process. There is an advantage to this.

1 is a perspective view and a partially enlarged view showing a structure of a multilayer glass to which a multilayer glass liver rod according to the present invention is applied.

Figure 2 is a perspective view and a cross-sectional view showing the structure of a multilayer glass liver rod according to the present invention.

3 shows the principle and structure of a Helmholtz resonator.

Figure 4 shows the principle and structure of applying the Helmholtz resonator to the laminated glass rod of the present invention.

5 is a graph comparing the sound insulation performance of the laminated glass liver bar and the general liver bar according to the present invention.

6 is a perspective view showing the structure of a general multilayer glass.

[Explanation of symbols on the main parts of the drawings]

1, 10: outer glass

2, 11: inner glass

3: ganbong

4, 26: moisture absorption hole

5, 40: absorbent

6: primary adhesive

7: secondary adhesive

20: absence of resonance

21: top member

22, 31: seat member

23, 32: lower plate member

24, 33: right plate member

25: sound absorption hole

27, 34: home

28, 35: stone

30: spacer member

50: secondary sealant

Claims (7)

In the liver rod provided between the outer glass and the inner glass of the multilayer glass, Ganbong consists of a resonance member and a spacer member coupled to the lower portion of the resonance member, The resonance member has a box-like structure in which the upper plate member, the seat plate member, the lower plate member and the right plate member are integrally formed, has a space inside the box structure, and a sound absorbing hole is formed in the upper plate member, The spacer member has a structure in which the upper plate is opened while the seat plate member, the bottom plate member, and the right plate member are integrally connected, and the multilayer glass liver bar. The multilayer glass liver rod according to claim 1, wherein a sound absorption frequency of the resonance member represented by the following formula is 150 to 400 Hz. [Equation 1]

Where Wn is the sound absorption frequency of the resonance member, c is the speed of sound, S is the cross-sectional area of the sound absorbing hole (S = πa ² , a is the radius of the sound absorbing hole) V is the volume of the internal space of the resonance member, l is the length of the sound absorbing hole.) According to claim 1, The lower plate member and the lower plate member of the resonance member is formed with a groove portion, the lower plate member of the resonance member is extended to form a protrusion, On the upper part of the seat plate member and the right plate member of the spacer member, a protrusion and a groove portion engaging with the groove portion and the protrusion portion of the resonance member are formed, The multilayer glass liver bar is characterized in that a space is formed inside the spacer member while the resonance member and the spacer member are coupled due to mutual coupling of the groove portion and the protrusion of the resonance member and the spacer member. The laminated glass liver rod according to claim 1, wherein a moisture absorption hole is formed in the lower plate member of the resonance member. 4. The multilayer glass liver rod according to claim 3, wherein a moisture absorbent is filled in the inner space of the spacer member. The multilayer glass liver rod according to claim 5, wherein the moisture absorbent is zeolite. In the multilayer glass in which the trunk | drum is provided between outer glass and inner glass, Ganbong consists of a resonance member and a spacer member coupled to the lower portion of the resonance member, The resonance member has a box-like structure in which the upper plate member, the seat plate member, the lower plate member and the right plate member are integrally formed, has a space inside the box structure, and a sound absorbing hole is formed in the upper plate member, The spacer member has a structure in which the upper plate is open while the seat plate member, the lower plate member and the right plate member are integrally connected.

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