System and method for acoustical absoprtion in a heating, ventilation, and/or air conditioning system
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Solution Overview
Problem
Conventional sound absorbing panels in HVAC systems are inefficient due to reduced effective area for acoustic absorption, low performance in lower frequency noise reduction, and cumbersome installation methods, which limit their effectiveness and ease of use.
Innovation Solution
An acoustically absorptive system featuring a panel assembly with an acoustic absorptive member covered by a porous housing, mounted with a gap between the panel and the HVAC system's wall, utilizing channels for sliding engagement and improved structural support, allowing for enhanced sound absorption and easier installation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of moving object
If conventional sound absorbing panels are attached directly to the wall with fasteners or integrated into the wall, then installation is simplified, but the effective area for acoustic absorption is reduced and lower frequency noise reduction performance deteriorates
Solution Approach 1:
The sound absorbing panel is segmented into a modular assembly comprising a porous housing, acoustic absorptive members, and a mounting assembly with channels. This segmentation allows the panel to be installed as a complete unit via sliding engagement, simplifying installation while maintaining the full effective absorption area since the porous housing covers all absorptive surfaces including edges.
Solution Approach 2:
The acoustic absorptive members are nested within the porous housing, which encapsulates them on all sides including edges. This nested configuration ensures that the entire surface area of the absorptive members contributes to sound absorption, maximizing the effective absorption area while the integrated mounting assembly simplifies installation.
2Object-affected harmful factors
If conventional sound absorbing panels are attached directly to the wall, then installation is simplified, but lower frequency noise reduction performance deteriorates
Solution Approach 1:
The modular design with separate porous housing and mounting assembly enables optimization of the acoustic cavity for lower frequency noise reduction while maintaining simple sliding installation through the channels.
Solution Approach 2:
The mounting assembly creates a spatial dimension by positioning the porous housing at an offset from the wall surface, establishing an acoustic cavity that enhances lower frequency noise reduction performance while the sliding mechanism maintains installation simplicity.
3Object-affected harmful factors
If the panel assembly is positioned with a gap between the rear surface and the wall, then lower frequency noise reduction is improved, but the mounting complexity increases
Solution Approach 1:
The mounting assembly merges the gap creation function with the support and positioning functions into a single integrated component. The channels in the mounting assembly simultaneously provide structural support, define the gap distance for acoustic cavity formation, and enable sliding installation, thus reducing overall mounting complexity despite the added gap requirement.
Solution Approach 2:
The mounting assembly serves multiple functions: it supports the porous housing, creates the acoustic cavity gap, and provides sliding engagement channels for installation. This multi-functionality reduces the need for separate components, thereby reducing overall mounting complexity while achieving the required gap for lower frequency noise reduction.
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 system achieves improved acoustic performance, particularly in lower frequency noise reduction, with increased effective absorption area and simplified installation, while allowing for easier access and maintenance, such as the installation of electrical cables.
Implementation Method 1
at least one acoustic absorptive member and a porous housing disposed about the at least one acoustic absorptive member
Implementation Method 2
a porous layer of the housing covers the at least one acoustic absorptive member
Data Source
AI summary
An acoustically absorptive system for a heating, ventilation, and/or air conditioning (HVAC) system includes a panel assembly. The panel assembly includes at least one acoustic absorptive member and a porous housing disposed about the at least one acoustic absorptive member such that a porous layer of the housing covers the at least one acoustic absorptive member at opposing faces of the panel assembly. A mounting assembly positions the panel assembly in a chamber of the HVAC system such that a gap is defined between a rear surface of the panel assembly and a wall of the chamber, the mounting assembly including one or more channels attached to the chamber.