Active ventilated and soundproof window

Abstract

The invention discloses an active ventilated and soundproof window, which comprises a soundproof window. The source ventilated and soundproof window is characterized in that: the soundproof window is provided with an active soundproof ventilation device which comprises a ventilation channel which is communicated with the indoor and the outdoor and an active noise control system. In the invention, the conventional ventilated and soundproof window is provided with the active soundproof ventilation device, and low-frequency noises are counteracted and absorbed by using active noise control technology; and meanwhile, a sound-absorption layer consisting of sound-absorbing materials is coated on the inner wall of the ventilation channel and high and middle-frequency noises are absorbed by a sound-absorbing structure in the ventilation channel. Thus, the low-frequency and high-frequency noises can be effectively reduced under the condition of maintaining high ventilation performance.

Description

technical field [0001] The invention relates to a building noise control device, in particular to an active ventilation and sound insulation window which utilizes an active noise control technology to realize ventilation requirements and effectively insulate sound to ensure quietness in a building room. Background technique [0002] The windows installed in existing buildings, whether they are wooden windows, steel windows, aluminum alloy windows, plastic steel windows, etc., have the main functions of lighting and ventilation. As the process of urbanization is getting faster and faster, noise pollution has become one of the important aspects of environmental pollution. The traffic noise on the street, the construction noise on the construction site, the entertainment noise in the neighborhood, etc., make people feel restless day and night, sleep and eat. . [0003] At present, it is a better way to control construction noise with sound-proof windows, especially for traffic...

AI Technical Summary

Problems solved by technology

However, people's habit of opening windows for ventilation will lead to a direct decline in the sound insulation performance of sound-proof windows. Although noise reduction measures are more effective for medium and high frequency noise, they have little effect on low frequency noise

[0004] Now, the emergence of ventilation and sound insulation windows can solve the above problems to a certain extent, but the ventilation and sound insulation windows can deal with construction site construction noise, railway, airport noise and other noise levels exceeding 80-90dB, and the noise energy is concentrated in low frequency noise below 250 There is a big problem, usually at the cost of sacrificing the ventilation volume, by increasing the bending times of the ventilation channel, reducing the area of ​​the air channel and other measures to solve the sound insulation problem of low-frequency noise, which greatly increases the difficulty of the production process and the production cost is also high

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