CN103075088B - Natural lighting ventilation noise-reduction window capable of at least reducing 15dB within the noise range of 125Hz to 8000Hz - Google Patents

Abstract

The invention discloses a natural daylighting, ventilation and noise reduction window capable of reducing at least 15dB within the noise range of 125-8000Hz, and belongs to the technical field of building doors and windows. In order to coordinate the noise problem caused by ventilation and daylighting and ventilation, the invention achieves the best compromise between the ventilation effect and the noise reduction effect. The indoor vents and the outdoor vents are arranged alternately, and the indoor vents and the outdoor vents have the same area size; the widths of the indoor vents and the outdoor vents are both W-2×(30～40)mm, and the width of the indoor vents The height RSO and the height SSO of the outdoor vent are both (0.2~0.30)×H, the distance TWW between the two windows is 40~290mm, and the center line perpendicular to the indoor vent is located at the center line perpendicular to the center line of the outdoor vent. Directly above or directly below and the two are parallel; the distance TSL between the indoor vent and the outdoor vent is 0.4H ~ 0.6H; where W represents the width of the window and W≤2000mm, the unit is mm; H represents the window (1 ) and H≤2000mm, the unit is mm. The invention can effectively reduce noise during lighting and ventilation.

Description

Natural lighting, ventilation and noise reduction windows that can reduce at least 15dB in the noise range of 125-8000Hz

technical field

The invention relates to a window for natural lighting, ventilation and noise reduction, which belongs to the technical field of building doors and windows.

Background technique

Designing green building envelopes is often associated with acoustic issues. For example, windows with double or multiple glazing are beneficial for energy saving and noise reduction. From another point of view, encouraging the use of natural ventilation is one of the important topics of green buildings, but opening windows often causes noise problems. Although some noise-reducing windows are provided in the prior art, for example, the invention application whose publication date is August 4, 2010 and whose publication number is CN101793122A provides a kind of noise-reducing window that can naturally ventilate and adjust natural lighting, but does not provide The specific noise reduction techniques, various parameters that affect noise reduction, and the relationship between various parameters have not given specific achievable noise reduction effects.

Contents of the invention

The purpose of the present invention is to provide a natural lighting ventilation noise reduction window that can reduce at least 15dB in the noise range of 125-8000Hz, so as to coordinate the noise problems caused by ventilation and lighting ventilation, so as to achieve the best compromise between ventilation effect and noise reduction effect.

The technical scheme that the present invention takes for solving the problems of the technologies described above is:

A natural lighting and ventilation noise-reduction window capable of reducing at least 15dB in the noise range of 125-8000Hz, the noise-reduction window includes two windows arranged in parallel, wherein the window on the indoor side is provided with an indoor ventilation opening, and the window on the outdoor side There are outdoor ventilation openings on the windows, and the indoor ventilation openings and outdoor ventilation openings are arranged alternately to form a zigzag ventilation channel between the two windows; the thickness of the window glass on the indoor side is 4-6 mm, and The thickness of the outer window glass is 4-6mm; the area of the indoor vent and the outdoor vent are the same; the width of the indoor vent and the outdoor vent are both W-2×(30-40)mm, and the height of the indoor vent RSO and the height SSO of the outdoor vent are both (0.2～0.30)×H, the distance TWW between the two windows is 40～290mm, and the centerline perpendicular to the indoor vent is located at the center perpendicular to the outdoor vent (3) Directly above or directly below the line and both parallel; the distance TSL between the indoor vent and outdoor vent is 0.4H ~ 0.6H; where W represents the width of the window and W≤2000mm, the unit is mm; H represents the window The height and H≤2000mm, the unit is mm.

The present invention has the following beneficial effects:

The technical scheme of the invention can effectively reduce noise during lighting and ventilation. By setting staggered vents on the two layers of window glass, a tortuous ventilation channel is formed between the two layers of window glass. When the air is exchanged, the noise transmitted by the air as the medium is transmitted in the curved ventilation channel. Due to the extension of the ventilation path and the conversion of the path direction, it is necessary to weaken the noise from the outdoor (or indoor) to the indoor (or outdoor) noise. By limiting the geometric parameters of indoor vents and outdoor vents, the best compromise between ventilation, lighting and noise reduction for natural lighting ventilation and noise reduction windows is achieved. The invention effectively solves the problem that the existing window ventilation often causes noise, and the ventilation is not good when it is tightly closed.

Description of drawings

Fig. 1 is a schematic structural diagram of Embodiment 1 of the present invention. Fig. 2 is a schematic structural diagram of a second embodiment of the present invention. Fig. 3 is a schematic structural diagram of a third embodiment of the present invention. Fig. 4 is a schematic structural diagram of Embodiment 4 of the present invention. Fig. 5 is a view along the direction A of Fig. 1 . Figure 6 is a comparison chart of the indoor and outdoor sound pressure level difference between the four window systems and the case of no window. Number 9 represents body of wall among the figure.

Detailed ways

Specific Embodiment 1: As shown in Figures 1 to 5, the natural lighting, ventilation and noise reduction windows that can reduce noise by at least 15dB in the range of 125 to 8000 Hz described in this embodiment include two windows 1 arranged in parallel, which are located indoors. The window on the side is provided with an indoor ventilation opening 2, and the window on the outdoor side is provided with an outdoor ventilation opening 3. The indoor ventilation opening 2 and the outdoor ventilation opening 3 are interlaced to form a meandering ventilation opening between the two windows 1. Channel 4; the thickness t1 of the window glass on the indoor side is 4-6 mm, and the thickness t2 of the window glass on the outdoor side is 4-6 mm; the indoor vent 2 and the outdoor vent 3 have the same area; the indoor vent 2 and the width of the outdoor vent 3 are both W-2×(30～40) mm, the height RSO of the indoor vent 2 and the height SSO of the outdoor vent 3 are both (0.2～0.30)×H, the distance between the two windows 1 The distance TWW between them is 40-290mm, and the center line perpendicular to the indoor vent 2 is located directly above or directly below the center line perpendicular to the outdoor vent 3 and both are parallel; between the indoor vent 2 and the outdoor vent 3 The distance TSL is 0.4H～0.6H; where W represents the width of the window 1 and W≤2000mm, the unit is mm; H represents the height of the window 1 and H≤2000mm, the unit is mm.

Specific embodiment two: as shown in Figure 2, in this embodiment, a transparent micro-perforated plate/film 5 is arranged in the ventilation channel 4 between the two windows 1; the transparent micro-perforated plate/film 5 is close to the window glass and Set parallel to the window pane.

Other components and connections are the same as those in the first embodiment.

Embodiment 3: As shown in FIG. 3 , in this embodiment, noise-absorbing louver blades 6 are arranged in the ventilation channel 4 . Other components and connections are the same as those in the first embodiment.

Specific embodiment four: as shown in Figure 4, this embodiment is respectively provided with a muffler hood 7 on both sides of the two windows 1 forming the ventilation channel 4, and the inner vent 2 and the outdoor vent 3 are respectively connected with the corresponding ones. The sound-absorbing cover 7 on the side is arranged correspondingly; A tortuous sound-absorbing bend 8 is formed between the two windows 1 and the sound-absorbing covers 7 on both sides of the two windows 1 . Other compositions and connections are the same as those in the first, second or third embodiment.

Embodiment 5: In this embodiment, the distance TWW between the two windows 1 is 40-100 mm. Other components and connections are the same as those in the first embodiment.

The present invention can be used in new buildings, and can also be used in rebuilt buildings, that is, adding additional glass layers on the basis of maintaining the original windows to form ventilation channels, because the additional window system can be transparent, so the form of the original windows will not be changed , especially for renovation and protection of old buildings. The above window system can be made of various materials, including wood, steel, aluminum, and plastic steel, and can be used in various buildings, including residential buildings, office buildings, and industrial buildings.

In order to test the noise reduction effect of the natural lighting noise reduction window of the present invention, the following experiments were done:

The experiment compares the noise reduction effect of the noise reduction window (window system) in four cases.

The height H of the test window opening is 1270mm, and the width W is 850mm. Float glass is used on each side, and the thickness t1 and t2 are 4mm respectively. The glass is inlaid on the wooden window frame. The window frame is embedded into the inside of the wall, and the outside is sealed with sealing paste to avoid sound leakage caused by the through gap at the junction of the window frame and the wall. The opening heights (SSO, RSO) on the outside and inside of the window are 380mm respectively, and the width is the same as the window opening (W=850mm); the width (TWW) between the two-story windows is 40mm, 145mm, 290mm, and 100mm respectively; The total area (AG) of the windows using float glass is 1.3m ² (see Table 1).

Table 1 Dimensions of various parts in the window system without filling sound-absorbing materials

SSO(mm) RSO(mm) TWW(mm) t1(mm) t2(mm) AG(m ² ) C001a 380 380 40 4.0 4.0 1.3 C002a 380 380 145 4.0 4.0 1.3 C004a 380 380 290 4.0 4.0 1.3 C005a 380 380 100 4.0 4.0 1.3

In this experiment, the indoor and outdoor sound pressure level difference is used as the test target to measure the noise reduction of the window system. The position, height and indoor and outdoor conditions of the window system in the building are simulated during the test. The window system in this test is installed at the window opening of the bedroom on the first floor of a simulated residential building, facing the street outdoors, and on a hard surface. Place a dodecahedron speaker on the outdoor side as the sound source, and place it at a position 6m away from the test window opening; arrange 5 microphones evenly outside the window opening on the outdoor window side as the receiving point, and test 1/3 octave each The average sound pressure level of the point; 5 microphones are evenly arranged in the room as the receiving point, and the average sound pressure level of each point in the 1/3 octave band is tested.

The experimental results are shown in Figure 6. In the four cases, the average indoor and outdoor sound pressure level difference from 125-8000Hz is above 15dB, achieving the above-mentioned 15dB noise reduction level.

Claims (5)

1. one kind at least can be reduced the natural lighting ventilation noise-reducing window of 15dB in 125 ~ 8000Hz noise range, described noise-reducing window comprises the two door frame windows (1) be arranged in parallel, the window being wherein positioned at indoor is provided with room ventilation mouth (2), the window being positioned at outside is provided with outdoor ventilation mouth (3), described room ventilation mouth (2) and outdoor ventilation mouth (3) are crisscross arranged, the ventilation conduit (4) that formation one is tortuous between two door frame windows (1); It is characterized in that: the thickness being positioned at the window glass of indoor is 4 ~ 6mm, the thickness being positioned at the window glass of outside is 4 ~ 6mm; Room ventilation mouth (2) is identical with the size of outdoor ventilation mouth (3); The width of room ventilation mouth (2) and outdoor ventilation mouth (3) is W-2 × (30 ~ 40) mm, the height RSO of room ventilation mouth (2), the height SSO of outdoor ventilation mouth (3) are 0.30 × H, distance TWW between two door frame windows (1) is 40 ~ 290 ㎜, perpendicular to directly over the center line that the center line of room ventilation mouth (2) is positioned at perpendicular to outdoor ventilation mouth (3) or immediately below and both are parallel; Distance TSL between room ventilation mouth (2) and outdoor ventilation mouth (3) is 0.4H ~ 0.6H; In formula, W represents the width of window (1) and 850mm≤W≤2000mm, and unit is mm; H represents the height of window (1) and 1270mm≤H≤2000mm, and unit is mm.

2. natural lighting ventilation noise-reducing window according to claim 1, is characterized in that: be provided with transparent microperforated panel/film (5) in the ventilation conduit (4) between two door frame windows (1); The close window glass of described transparent microperforated panel/film (5) also be arranged in parallel with window glass.

3. natural lighting ventilation noise-reducing window according to claim 1, is characterized in that: in described ventilation conduit (4), arrange noise elimination louvre blade (6).

4. the natural lighting ventilation noise-reducing window according to claim 1,2 or 3, it is characterized in that: respectively arrange a sound proof housing (7) in the both sides of the two door frame windows (1) forming described ventilation conduit (4), interior ventilation opening (2), outdoor ventilation mouth (3) are corresponding with the sound proof housing (7) of corresponding side respectively to be arranged; A tortuous noise elimination bend (8) is formed between the sound proof housing (7) of two door frame windows (1) and two door frame window (1) both sides.

5. natural lighting ventilation noise-reducing window according to claim 1, is characterized in that: the distance TWW between two door frame windows (1) is 40 ~ 100 ㎜.