Ventilation device with sound protection, assembly
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Solution Overview
Problem
Conventional air-technical devices with silencers for sound insulation in buildings require significant space, which is not efficiently utilized, especially in suspended ceilings where multiple systems like ventilation, heating, and electrical connections are already accommodated, leading to reduced soundproofing effectiveness.
Innovation Solution
An air-technical device with a tub-shaped housing that integrates a silencer with an air outlet chamber and sound absorption material layers, optimizing sound insulation by minimizing flow resistance and maximizing the flow path through the silencer, allowing for adaptable soundproofing based on material and length, and reducing the need for additional space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a conventional duct silencer is used for sound insulation in the exhaust air duct, then sound insulation is improved, but the device dimensions and installation space become excessively large
Solution Approach 1:
The silencer is integrated directly into the housing of the ventilation device, merging two previously separate components (housing and silencer) into one unified structure. This eliminates the need for a separate duct silencer installation in the ceiling, significantly reducing the required installation space while maintaining sound insulation functionality.
Solution Approach 2:
The silencer is nested within the housing structure, with the exhaust air duct passing through the housing and the silencer positioned inside the housing volume. This nested arrangement allows the silencer to utilize the existing housing space, avoiding additional external space requirements.
2Productivity
If the air duct passes completely through the wall for ventilation, then space utilization is improved, but sound transmission between rooms increases
Solution Approach 1:
The harmful sound transmission path is extracted and isolated by routing the exhaust air duct through a dedicated pathway in the wall with an offset arrangement. The inlet and outlet openings are positioned at different locations, creating a controlled flow path that separates the air flow function from the wall's sound insulation function.
Solution Approach 2:
The housing acts as an intermediary structure between the inlet and outlet openings in the wall. It provides a controlled transition zone for the exhaust air while maintaining the wall's sound insulation properties, as the housing can be designed with sound absorption materials and positioned to minimize sound leakage.
Applied Scientific Principles
This section explains which scientific principles are used to turn an abstract innovation direction into a practical engineering solution.
Function Achieved in This Case
The solution provides effective sound insulation with reduced space requirements, ensuring soundproofing values comparable to closed walls while allowing for efficient installation in low-ceilinged areas, minimizing visual and construction space impact.
Implementation Method 1
a sound absorption material layer is assigned to at least the air outlet chamber
Data Source
Figure 1~2A
Figure 2B~2C
Figure 3A~3B
AI summary
The invention relates to an air handling device (7) with sound insulation for conveying air through a wall (2) of a building (1), comprising at least one air duct (15), in particular an exhaust air duct, which has an exhaust air opening (17) at one end and an outlet opening (18) at the other end, wherein the air duct (15) is designed to completely or partially penetrate an opening (10) in the wall (2), such that the exhaust air opening (17) is located on a first side of the wall (2), in particular facing an acoustic source room of the building (1), and the outlet opening (18) is located on a second side of the wall (2), in particular facing an acoustic receiving room of the building (1), and comprising a silencer (11) associated with the outlet opening (18), and wherein the air duct (15) is guided through a trough-shaped housing (12) which has a housing wall (14) and a housing bottom (13), wherein the housing wall (14) is designed to is trainedwith an end face spaced apart from the housing base (13) to seal against the second side of the wall (2). It is provided that the silencer (11) has an air outlet chamber (26) which has a housing partition (25) extending parallel to and spaced apart from the housing base (13) to the housing wall (14), wherein the outlet opening (18) of the air duct (15) opens through the housing partition (25) into the air outlet chamber (26), and that an air outlet (27) is formed in a section of the housing wall (13) in the area of the air outlet chamber (26) spaced apart from the outlet opening (18), and that at least one sound-absorbing material layer (22) is assigned to at least the air outlet chamber (26).