Air Diffuser Baffle Design with Slits and Indentations to Reduce Noise
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Air diffuser devices in ventilation systems often produce noise due to airflow, which can be disruptive and uncomfortable, and also cause drafts.
Innovation Solution
The air diffuser device features a baffle element with slits or grooves extending from the center to the periphery, radially extending indentations, and a specific contour to minimize turbulence and noise, along with adjustable baffle elements to optimize airflow and reduce noise further.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If conventional air diffuser devices are used, then ventilation function is provided, but noise is generated in the human audible spectrum
Solution Approach 1:
The baffle element is segmented into multiple slits or grooves extending from the central region to the peripheral region. This segmentation divides the airflow into multiple smaller streams, reducing turbulence and noise generation while maintaining effective ventilation function.
Solution Approach 2:
The baffle element features a curved contour with a point of inflexion that creates radially internal and radially external curvature regions. This curved geometry guides airflow smoothly, reducing turbulence and noise in the human audible spectrum while preserving ventilation efficiency.
2Object-affected harmful factors
If conventional air diffuser devices are used, then air flow is provided, but drafts and discomfort are caused
Solution Approach 1:
The airflow is segmented into multiple streams through the slits or grooves in the baffle element. This creates a more distributed and gentle air flow pattern that reduces drafts and discomfort while maintaining adequate air circulation.
Solution Approach 2:
The curved contour of the baffle element with its point of inflexion creates a flow pattern that directs air horizontally along the ceiling or wall rather than creating direct vertical drafts, thereby reducing discomfort while maintaining air flow effectiveness.
3Object-affected harmful factors
If baffle element with slits or grooves is used, then noise is reduced, but turbulence may increase
Solution Approach 1:
The curved contour of the baffle element with its point of inflexion compensates for potential turbulence by creating smooth radially internal and radially external curvature regions. This geometry guides airflow transitions smoothly, reducing turbulence while maintaining the noise reduction benefits of the slits or grooves.
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 design significantly reduces noise in the human audible spectrum and minimizes drafts, providing a more comfortable and quieter ventilation experience while reducing ceiling or wall pollution.
Implementation Method 1
a baffle element having a central region and a peripheral region with a peripheral edge for deviating at least a part of a ventilation air flow entering said room through said ventilation duct opening in a flow direction with an air flow component parallel to said wall or ceiling
Implementation Method 2
This slit or groove geometry causes little turbulence in the air passing along the baffle element with a radial flow pattern from a center to the periphery of the baffle element
Data Source
AI summary
The invention relates to an air diffuser device (1) for ventilating rooms and to be installed in a ventilation duct opening in a wall or ceiling of a room, said air diffuser device (1) comprising a baffle element (10) having a central region (10a) and a peripheral region (10b) with a peripheral edge (12; 13) for deviating at least a part of a ventilation air flow entering said room through said ventilation duct opening in a flow direction with an air flow component parallel to said wall or ceiling. The baffle element (10) comprises a plurality of slits or grooves (11) each extending from the central region (10a) of said baffle element (10) to the peripheral region (10b) of said baffle element (10). In addition, the peripheral edge (13) of said baffle element (10) has a plurality of radially extending indentations (14) spaced from each other along the periphery of said baffle element (10).