Noise-reduction soundproof window

Abstract

The utility model discloses a noise reduction soundproof window which comprises a window sash, and the window sash comprises a window sash frame, first glass, second glass and a resonance film. The first glass and the second glass are assembled in the window sash frame in a front-back spaced mode, the first glass, the second glass and the window sash frame are connected in a sealed mode to form a hollow cavity, and the resonance film is connected between the first glass and the second glass. According to the noise-reduction sound-insulation window, low-frequency noise energy transmitted through the double-layer hollow sound-insulation window is absorbed through the thin film resonance acoustic super-structure technology, noise reverberation caused by noise in a hollow cavity of the double-layer hollow sound-insulation window is reduced, and the noise-reduction effect of the double-layer hollow sound-insulation window is effectively improved; and compared with a three-layer glass and two-layer hollow soundproof window, the overall cost increase is less.

Description

Technical Field

[0001] The utility model relates to the technical field of furniture and building material sound insulation, in particular to a noise reduction and sound insulation window. Background Art

[0002] Currently, most of the soundproof windows on the market are double-layer hollow soundproof windows. In order to further improve the noise reduction effect, there are also three-layer glass two-layer hollow soundproof windows, or double-layer laminated glass soundproof windows to improve the noise reduction effect.

[0003] The cost of upgrading from double-layer hollow soundproof windows to triple-layer glass double-layer hollow soundproof windows has increased significantly, and the difficulty of installation and construction has also increased accordingly, but the actual noise reduction effect has been minimally improved. The main reason is that hollow soundproof windows have poor barrier performance against low-frequency noise. The sound waves of low-frequency noise are long and can easily be radiated and propagated through hollow glass. On the other hand, sound waves resonate in the hollow cavity of hollow glass, causing the glass to vibrate, exacerbating the radiation and propagation of low-frequency noise.

[0004] At present, the blocking of low-frequency noise usually follows the "mass density control law". Low-frequency noise has a long wavelength, high energy, and a long propagation distance. In order to achieve the blocking of low-frequency noise, traditional sound insulation materials must be "thick and heavy". However, it is obviously not advisable to use "thick and heavy" sound insulation structures that are good for blocking low-frequency noise on windows. Usually, it is extremely costly in exchange for a tiny performance improvement. Utility Model Content

[0005] The utility model aims to provide a noise reduction soundproof window to solve the problem that the existing double-layer hollow soundproof window has an unsatisfactory soundproof effect on low-frequency noise.

[0006] In order to achieve the above-mentioned purpose, the technical solution proposed by the utility model is:

[0007] A noise reduction and soundproof window comprises a window sash, wherein the window sash comprises: a window sash frame, a first glass, a second glass and a resonance film. The first glass and the second glass are assembled in the window sash frame at intervals in front and back, the first glass, the second glass and the window sash frame are sealed and connected to form a hollow cavity, and the resonance film is connected between the first glass and the second glass.

[0008] Furthermore, a microporous fixing member is provided in the hollow cavity, and the microporous fixing member is connected between the first glass and the second glass to separate the hollow cavity into an inner cavity and an outer cavity, and the resonance film is located in the inner cavity.

[0009] Preferably, the outer cavity is filled with a first sound absorbing material.

[0010] Preferably, elastic adhesive strips are provided between the window sash frame and the first glass, and between the window sash frame and the second glass. The first glass and the second glass are both sealed and connected to the window sash frame by sealant.

[0011] Preferably, the window sash frame is a cavity structure, and the internal cavity thereof is filled with a second sound-absorbing material.

[0012] Preferably, the thickness of the resonance film is 0.1 mm to 1 mm.

[0013] Preferably, the noise reduction and sound insulation window also includes a window frame, and the window sash is installed in the window frame.

[0014] Preferably, an elastic sealing structure is provided between the window sash and the window frame.

[0015] Preferably, the sash frame is hinged to the window frame, and a handle is installed on the sash frame. The elastic sealing structure includes a sealing groove and an elastic buckle that fit with the buckle, and one of the sash frame and the window frame is provided with a sealing groove, and the other is provided with an elastic buckle.

[0016] Preferably, the window frame is a cavity structure, and the inner cavity thereof is filled with a third sound-absorbing material.

[0017] By adopting the above technical scheme, the beneficial effects of the utility model are as follows: the utility model adopts thin film resonance acoustic metastructure technology to absorb the low-frequency noise energy transmitted through the double-layer hollow soundproof window, reduce the noise reverberation caused by the noise in the hollow cavity of the double-layer hollow soundproof window, and effectively improve the noise reduction effect of the double-layer hollow soundproof window. Compared with the triple-layer glass and two-layer hollow soundproof window, the overall cost increase is less. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 It is a schematic front view of a noise reduction and sound insulation window of a preferred embodiment of the utility model.

[0019] Figure 2 for Figure 1 AA cross-sectional view.

[0020] Figure 3 and Figure 4 for Figure 2 Schematic diagram of the structure of the middle window sash.

[0021] Figure 5 for Figure 2 Schematic diagram of the assembly of the middle window sash and the window sash frame.

[0022] Wherein: 1. sash, 11. sash frame, 12. first glass, 13. second glass, 14. resonance film, 15. hollow cavity, 151. inner cavity, 152. outer cavity, 16. microporous fixing part, 17. elastic rubber strip, 18. sealant, 19. handle, 2. window frame, 3. elastic sealing structure, 31. sealing slot, 32. elastic buckle. DETAILED DESCRIPTION

[0023] The utility model is further described below in conjunction with the accompanying drawings and specific implementation methods.

[0024] like Figure 1 to Figure 5 As shown, the noise reduction and soundproof window of this embodiment includes a window sash 1 and a window frame 2, the window frame 2 is used to connect with the main body of the building structure, and the window sash 1 is installed in the window frame 2. The window sash 1 includes a window sash frame 11, a first glass 12, a second glass 13, a resonance film 14 and a microporous fixing member 16. The connection method of the window sash frame 11 and the window frame 2 adopts the common connection method of the window sash 1 and the window frame 2 on the market. In this embodiment, the window sash frame 11 is hinged with the window frame 2. In order to facilitate the opening and closing of the window, a handle 19 is installed on the window sash frame 11. The first glass 12 and the second glass 13 are spaced front and back and sealed and assembled in the window sash frame 11 to form a hollow cavity 15. The microporous fixing member 16 is arranged in the hollow cavity 15, and the microporous fixing member 16 is connected between the first glass 12 and the second glass 13 to separate the hollow cavity 15 into an inner cavity 151 and an outer cavity 152. The resonance film 14 is arranged in the inner cavity 151, and the resonance film 14 is connected between the first glass 12 and the second glass 13.

[0025] The resonance film 14 and the air in the hollow cavity 15 form an acoustic impedance system. When low-frequency sound waves pass through the glass, the film resonates, and the film vibrates to produce inelastic strain, which consumes the energy of the low-frequency sound waves, thereby improving the low-frequency sound insulation effect. The resonance film 14 has a certain degree of rigidity and elasticity, and the thickness is between 0.1 mm and 1 mm.

[0026] The micropores in the microporous fixing member 16 and the outer cavity 152 form a Helmholtz resonance system. The micropore aperture is designed to absorb low-frequency sound waves, which can further consume the energy of low-frequency sound waves and reduce the radiation and propagation of low-frequency sound waves through the glass. The first sound-absorbing material 4 can be filled in the outer cavity 152 to play a role in acoustic impedance matching, tune the Helmholtz resonance system, and increase the sound absorption performance. The first sound-absorbing material 4 is mostly a loose and porous material, such as sound-absorbing cotton, slag wool, blankets, etc. Its sound absorption mechanism is that the sound waves penetrate into the pores of the material, and the pores are mostly open holes that penetrate each other internally, which are subjected to friction and viscous resistance of air molecules, and cause the fine fibers to vibrate mechanically, thereby converting sound energy into heat energy.

[0027] In this embodiment, elastic strips 17 are provided between the window sash frame 11 and the first glass 12, and between the window sash frame 11 and the second glass 13. The elastic strips 17 are used to achieve elastic contact between the window sash frame 11 and the glass, which can effectively reduce the resonance of sound waves in the hollow cavity 15 and cause the glass vibration to be transmitted to the window sash frame 11 and the window frame 2, and then transmit noise to the main body of the building structure.

[0028] The first glass 12 and the second glass 13 are both sealed to the window sash frame 11 by means of a sealant 18 to form a sealing structure, thereby preventing sound waves from propagating noise through contact gaps around the glass and the window sash frame 11 .

[0029] The window sash frame 11 and the window frame 2 are both cavity structures with one or more cavities. The internal cavity of the window sash frame 11 is filled with a second sound-absorbing material 5, and the internal cavity of the window frame 2 is filled with a third sound-absorbing material 6. The second sound-absorbing material 5 and the third sound-absorbing material 6 can effectively improve the sound insulation performance of the window sash frame 11 and the window frame 2.

[0030] An elastic sealing structure 3 is provided between the window frame 11 and the window frame 2 to form a sealing fit after the window is closed to prevent noise from propagating through the gap. In a feasible option of this embodiment, the elastic sealing structure 3 includes a sealing card slot 31 and an elastic card buckle 32 that are snap-fitted, and one of the window frame 2 and the window frame 11 is provided with the elastic card buckle 32, and the other is provided with the sealing card slot 31.

[0031] The noise reduction soundproof window of this embodiment is based on the resonance superstructure technology, which absorbs the low-frequency noise energy transmitted through the double-layer hollow soundproof window to effectively block the low-frequency noise, so that the double-layer hollow soundproof window can achieve the sound insulation goal of the triple-layer glass and two-layer hollow soundproof window, and the overall cost is more cost-effective than the triple-layer glass and two-layer hollow soundproof window. The noise reduction soundproof window of this embodiment can not only have a significant effect on the low-frequency sound insulation performance, but also can reduce the reverberation generated by the low-frequency noise in the cavity 15 of the soundproof window, thereby achieving different noise reduction purposes.

[0032] Although the present invention has been specifically shown and described in conjunction with the preferred embodiments, those skilled in the art should understand that various changes in form and details of the present invention are within the scope of protection of the present invention without departing from the spirit and scope of the present invention as defined in the appended claims.

Claims

1. A noise reduction and sound insulation window, comprising a window sash (1), characterized in that: The window sash (1) comprises: a window sash frame (11), a first glass (12), a second glass (13) and a resonance film (14); the first glass (12) and the second glass (13) are installed in the window sash frame (11) with a front-to-back spacing; the first glass (12), the second glass (13) and the window sash frame (11) are sealed and connected to form a hollow cavity (15); and the resonance film (14) is connected between the first glass (12) and the second glass (13).

2. The noise reduction and sound insulation window according to claim 1, characterized in that: It also includes a microporous fixing member (16), the microporous fixing member (16) being connected between the first glass (12) and the second glass (13) to separate the hollow cavity (15) into an inner cavity (151) and an outer cavity (152), and the resonance film (14) is located in the inner cavity (151).

3. The noise reduction and sound insulation window according to claim 2, characterized in that: The outer cavity (152) is filled with a first sound absorbing material (4).

4. The noise reduction and sound insulation window according to claim 3, characterized in that: An elastic rubber strip (17) is provided between the window sash frame (11) and the first glass (12), and between the window sash frame (11) and the second glass (13); and the first glass (12) and the second glass (13) are both sealed and connected to the window sash frame (11) via a sealant (18).

5. The noise reduction and sound insulation window according to claim 4, characterized in that: The window sash frame (11) is a cavity structure, and the internal cavity thereof is filled with a second sound absorbing material (5).

6. The noise reduction and sound insulation window according to claim 1, characterized in that: The thickness of the resonance film (14) is 0.1 mm to 1 mm.

7. The noise reduction and sound insulation window according to any one of claims 1 to 6, characterized in that: It also comprises a window frame (2), wherein the window sash (1) is installed in the window frame (2).

8. The noise reduction and sound insulation window according to claim 7, characterized in that: An elastic sealing structure (3) is provided between the window sash (1) and the window frame (2).

9. The noise reduction and sound insulation window according to claim 8, characterized in that: The window sash frame (11) is hinged to the window frame (2), and the window sash frame (11) is provided with a handle (19); the elastic sealing structure (3) comprises: a sealing groove (31) and an elastic buckle (32) that fit together in a snap-fit ​​manner; one of the window sash frame (11) and the window frame (2) is provided with the sealing groove (31), and the other is provided with the elastic buckle (32).

10. The noise reduction and sound insulation window according to claim 8, characterized in that: The window frame (2) is a cavity structure, and the internal cavity thereof is filled with a third sound-absorbing material (6).

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