[China Glass Net] The soundproof window consists of double or triple layer of glass or window frame of different thickness or glass. The specially processed sound insulation layer is used for the sound insulation layer. The PVB film is firmly bonded by high temperature and high pressure. The sound-insulating glass is formed; or between the sound-insulating layers, an aluminum alloy frame filled with a desiccant (molecular sieve) is sandwiched, and the edge is further bonded with a sealant (butyl rubber, polysulfide rubber, structural adhesive). The glass component; the other is to use the principle of the thermos bottle to produce a flat glass member with a balanced and pressure-resistant flat pressure. Effectively suppress the "matching effect" and the formation of sound insulation troughs, fill the window frame with sound absorbing materials, fully absorb the sound waves of transparent glass, and isolate the noise of each frequency band to a large extent.
The so-called soundproof window is to separate the sound with two layers of windows. The gaps in each window are blocked as much as possible. This method is suitable for all places with noise interference.
In addition, double glazing can also be used because of its better sound insulation. The windows are divided into fixed type and movable type. The fixed window is generally not recommended in consideration of ventilation factors, while the movable type is subdivided into two types: horizontal pull type and push open type.
It is understood that there are two main types of ventilation and soundproof windows on the market. One is a mechanical exhaust soundproof window, and the other is a three-track soundproof window.
The former is based on the double-track horizontally-drawing window or the push-opening window, and the effect of ventilation and sound insulation is achieved by reinforcing the thickness of the glass or using double-layer glass and adding mechanical ventilation function, and the price is relatively high due to the mechanical part; The latter adopts a three-track window frame, and the upper and lower sashes are designed as a noise-cancelling cavity structure, and a special ventilation hole is added above the window to achieve natural ventilation and sound insulation. According to the test data, the mechanical exhaust soundproof window can generally be soundproofed by 20 to 30 decibels, and the three-track soundproof window can still block noise by 30 decibels in the case of natural ventilation.
According to experts, the sound insulation performance of the cross-window window depends on the tightness between the two windows and between the window frames, and the opening of the window depends on the tightness of the closed window and the frame. Accordingly, although the two-track horizontal pull-type and push-open type two types of soundproof windows are widely used, there are some design deficiencies.
First of all, the gap between the two glass frames of the double-track horizontally-sliding window is too large, and the cavity below the window sash is a cavity, and the airtightness is not strong, and the gap of the sound-proof window sash adopting the three-track design is smaller. Secondly, the sliding wheel is easy to wear, the life is not too long, and the window sash can not be pushed after being worn; if the window is opened, the space is occupied, and the door and window are easily lost when the hardware is old.
In terms of price, the cost of the three-track soundproof window is more reasonable. Therefore, consumers should better understand their needs when purchasing sound-proof windows, and choose the right products, so that they will not spend more money and achieve the desired effect. .
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