Regulating box for ventilation
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Solution Overview
Problem
Existing acoustically damped regulating boxes for ventilation do not optimize air flow guidance while effectively damping noise, as they rely on noise damping materials on walls without efficient design features for air flow regulation.
Innovation Solution
The design incorporates a noise damping plate with a center hole concentric to the inlet aperture and additional holes on both sides, allowing for optimal noise damping and air flow regulation, with the center hole enabling easy removal of the damper plate for cleaning without detaching the plate, and ensuring sufficient surface area for effective noise reduction and air passage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If noise damping material is installed on the walls of the regulating box, then noise is damped effectively, but air flow guidance is not optimized
Solution Approach 1:
The noise damping function is segmented from the wall structure by using separate noise damping plates that can be independently positioned and configured within the regulating box, allowing optimal air flow paths to be maintained while achieving effective noise damping
Solution Approach 2:
Noise damping plates are introduced as intermediary elements between the air flow path and the box walls, mediating the noise reduction function without interfering with the primary air flow guidance objectives
2Object-affected harmful factors
If a solid noise damping plate is used, then noise damping is effective, but the damper plate cannot be removed for cleaning without detaching the plate
Solution Approach 1:
The noise damping plate is segmented by introducing holes through it, creating a perforated structure that maintains noise damping functionality while enabling access to the damper plate behind it for cleaning purposes
Solution Approach 2:
The noise damping plate has different local properties: solid areas for noise damping and holes for access, allowing the plate to serve multiple functions in different locations simultaneously
3Object-affected harmful factors
If the noise damping plate covers the entire inlet aperture area, then noise damping is maximized, but air flow passage is restricted
Solution Approach 1:
The noise damping plate is designed with a porous/perforated structure containing multiple holes of different sizes, allowing air to pass through while the solid portions of the plate maintain noise damping effectiveness
Solution Approach 2:
The plate transitions from a solid structure to a perforated structure with specific hole diameters and distributions, changing the physical parameters to balance noise damping and air flow requirements
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
This configuration effectively dampens noise and regulates air flow, allowing for efficient noise reduction and air passage while enabling easy maintenance of the damper plate, enhancing the overall performance of the regulating box.
Implementation Method 1
a noise damping plate with a center hole concentric to the inlet aperture and additional holes on both sides, allowing for optimal noise damping and air flow regulation
Data Source
Figure 1~2
AI summary
Regulating box (1) for ventilation, which regulating box has at least one inlet aperture for air flow and at least one outlet aperture for air flow, the axes of which apertures are at an angle with respect to each other, and which regulating box (1) is provided with a noise damping element. The invention is implemented in such a way that the noise damping element is formed from two noise damping plates (4, 5), the first of which is arranged in the area between the inlet aperture and outlet aperture of the air flow, and the second on the rear wall of the regulating box (1) after the outlet aperture.