Ventilation muffler door

Abstract

The invention relates to a ventilation silencing door, which comprises a door plate and silencers, wherein the silencers are embedded in the door plate in a penetrating manner in an equal-distance array mode; each silencer comprises two annular tubes which are coaxially sleeved; the inner annular tube is made of hard materials; the outer annular tube is made of soft elastic materials; an annular seam vertical to the axial line of the inner annular tube is cut on each inner annular tube; a vibration sheet matched with the outer annular tube is clamped in each annular seam; each vibration sheet radically penetrates through the corresponding inner annular tube and is fixed on the inner wall of the corresponding outer annular tube; each vibration sheet is positioned in an annular region formed between the inner annular tube and the outer annular tube and is provided with fine and dense ventilation holes; a sealing plate is also arranged on the inner wall of each inner annular tube; a position between each sealing plate and the corresponding vibration sheet is filled with buffer powder; and the particle radius of the buffer powder is greater than the radius of the ventilation hole. The silencing door has the advantages that the ventilation is ensured; and meanwhile, the effective sound isolation and silencing effects can be achieved.

Description

technical field [0001] The invention relates to a building sound-absorbing material, in particular to a ventilated sound-absorbing door. Background technique [0002] In dormitory buildings, teaching buildings and other buildings, it is often necessary to ensure that each room has good sound insulation and noise reduction effects. Therefore, the indoor glass is often double-glazed, and the doors are noise-absorbing doors. When the doors and windows are closed, classrooms and dormitories have good sound insulation effects. However, in hot summer weather, closing doors and windows will easily lead to indoor ventilation obstruction, especially in classrooms with a large number of people, the closed environment will easily make the air not fresh, and the indoor temperature will rise sharply, which will seriously affect the learning environment and physical health of students; if Open the doors and windows, though it can ventilate and dissipate heat, it will generate a lot of noi...

AI Technical Summary

Problems solved by technology

[0002] In dormitory buildings, teaching buildings and other buildings, it is often necessary to ensure that each room has good sound insulation and noise reduction effects. Therefore, the indoor glass is often double-glazed, and the doors are noise-absorbing doors. When the doors and windows are closed, classrooms and dormitories have good sound insulation effects. However, in hot summer weather, closing doors and windows will easily lead to indoor ventilation obstruction, especially in classrooms with a large number of people, the closed environment will easily make the air not fresh, and the indoor temperature will rise sharply, which will seriously affect the learning environment and physical health of students; if Open the doors and windows, although it can ventilate and dissipate heat, it will cause a lot of noise pollution to the surroundings, and there is no good solution so far

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