Ventilation and noise reduction and noise reduction project
Publish date：2018-06-27 Views：468
Engineering Introduction:
The ventilation and sound insulation window is a device for reducing the sound transmission process by using a separate steel or aluminum alloy section with sound absorption and special structure. The utility model comprises two window frames, middle stands, and inner and outer glass windows installed between the window frames and the middle stands. At present, there are many professional research institutions and enterprises and institutions in China, such as the Building Physical Acoustics Laboratory of Tsinghua University, Hanks sound insulation technology Engineering Co., Ltd., and so on, and so on, in Hangzhou. In the research practice of ventilating sound insulation window, it has made remarkable results and responded strongly on the market. Many citizens designate the custom installation and create great benefits for the harmonious society.
National standard:
Standard value list for sound insulation evaluation of ventilation and sound insulation windows (unit: dB (A))
|
category
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Daytime
|
At night
|
Applicable area
|
|
0 |
50 |
40 |
Convalescent area, villas area
|
|
1 |
55 |
45 |
Residential, cultural and educational institutions
|
|
2 |
60 |
50 |
Residential commercial industrial zone
|
|
3 |
65 |
55 |
Industrial area
|
|
4 |
70 |
55 |
Traffic trunk line
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Product features:
The first muffling channel is set at the bottom of the two window frame, the air intake of the first muffling channel is horizontally arranged on the outside side, the outgassing port is horizontally arranged between the two window frames, and the air intake is provided with a sealed seal which can be opened, and the sound barrier between the inlet and the outgassing ports is separated into a slewing muffle passage from the noise elimination baffle;
Second anechoic channel, which is sealed in the middle of the two window frame, the intake of the second sound channel is set horizontally at the bottom, the outlet is set horizontally at the top, and the inlet and outlet are separated from the noise barrier to the reentrant noise elimination channel, and the outer glass window is the fixed window glass and the bottom is glass 100. Leaf window, inner glass window, the upper part is glass louver, and the middle lower part is two inner open type open window. The sound insulation effect of the utility model is remarkable, and can be widely used in various buildings.
