Small-hole type door and window frame with effects of ventilation and noise elimination
A noise-cancelling door and hole-shaped technology, applied in the field of daily life, can solve the problems of high production cost, complex production process of two-way composite sound insulation curtains, inability to take into account noise reduction and ventilation effects at the same time, and achieve low production cost and external appearance. Beautiful appearance and simple structure
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Embodiment 1
[0036] Such as figure 1 As shown, a small hole type ventilation and noise reduction door window frame includes a first surface layer 1, a second surface layer 2 matched with the first surface layer 1, the first surface layer 1 and the second surface layer 2 cooperate with each other, Form the frame.
[0037] An intermediate layer 3 is arranged between the first surface layer 1 and the second surface layer 2, a first cavity is formed between the first surface layer 1 and the intermediate layer 3, and a second cavity is formed between the second surface layer 2 and the intermediate layer 3. In the cavity, the plane where the middle layer 3 is located is parallel to the plane where the first surface layer 1 is located and the plane where the second surface layer 2 is located. Several first ventilation holes 4 are provided on the first surface layer 1 , several second ventilation holes 5 are provided on the second surface layer 2 , and several third ventilation holes 6 are provid...
Embodiment 2
[0044] A small-hole type ventilation and noise reduction door and window frame, including a first surface layer 1, a second surface layer 2 matched with the first surface layer 1, the first surface layer 1 and the second surface layer 2 cooperate with each other to form a frame body .
[0045] Two intermediate layers 3 are arranged between the first surface layer 1 and the second surface layer 2, and a cavity is formed between the intermediate layers 3, between the first surface layer 1 and the intermediate layer 3 close to the first surface layer 1 The first cavity is formed, and the second cavity is formed between the second surface layer 2 and the intermediate layer 3 close to the second surface layer 2. The plane of the intermediate layer 3 is respectively the same as the plane of the first surface layer 1 and the second surface layer 2. The planes are parallel. Several first ventilation holes 4 are provided on the first surface layer 1 , several second ventilation holes ...
Embodiment 3
[0048] Such as image 3 As shown, a small hole type ventilation and noise reduction door window frame includes a first surface layer 1, a second surface layer 2 matched with the first surface layer 1, the first surface layer 1 and the second surface layer 2 cooperate with each other, Form the frame.
[0049] An intermediate layer 3 is arranged between the first surface layer 1 and the second surface layer 2, a first cavity is formed between the first surface layer 1 and the intermediate layer 3, and a second cavity is formed between the second surface layer 2 and the intermediate layer 3. In the cavity, the plane where the middle layer 3 is located is parallel to the plane where the first surface layer 1 is located and the plane where the second surface layer 2 is located. Several first ventilation holes 4 are provided on the first surface layer 1 , several second ventilation holes 5 are provided on the second surface layer 2 , and several third ventilation holes 6 are provid...
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