Ventilation system and acoustic member
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Solution Overview
Problem
Existing ventilation systems face challenges in effectively absorbing and insulating sound, while also ensuring unobstructed airflow, particularly due to the configuration of insulators and vent ducts in vehicles.
Innovation Solution
A ventilation system with an acoustic member featuring a film-like body portion opposed to the outlet, partitioning the internal space into air chambers, and a periphery portion connected to the wall to allow airflow, preventing air flow inhibition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If the breathable member covers the concave part of the vent duct, then sound absorption is improved, but air flow can be blocked due to the concave part being covered
Solution Approach 1:
The acoustic member extends into the concave part of the vent duct along the air flow direction, utilizing the depth dimension of the concave structure. This allows the breathable member to cover the concave surface for sound absorption while the open outer edge maintains air flow paths through the vent duct.
Solution Approach 2:
The acoustic member acts as an intermediary element that fills the concave part of the vent duct. It provides sound absorption by covering the concave surface while its configuration with an open outer edge ensures it does not completely block air flow, mediating between sound absorption and air flow requirements.
2Stability of the object's composition
If the body portion of the acoustic member is fully fixed to the periphery portion, then structural stability is improved, but air flow between chambers is restricted
Solution Approach 1:
The outer edge of the body portion is segmented into a fixed portion that connects to the periphery portion for structural stability and a communicative portion that remains open to allow air flow between the first and second air chambers.
Solution Approach 2:
Different portions of the body portion's outer edge have different fixation states. The inner portion is fixed to provide structural stability, while the outer portion remains open to enable air communication between chambers, creating local differentiation of functional properties.
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 enhances sound absorption and insulation while maintaining airflow, improving noise reduction in vehicles by effectively communicating air between chambers.
Implementation Method 1
an acoustic member absorbing sound from the outlet, where the acoustic member includes a body portion having a film-like shape, the body portion opposed to the outlet
Data Source
AI summary
A ventilation system with an inlet and outlet, the ventilation system being mounted to a wall, the ventilation system including: an acoustic member absorbing sound from the outlet; the acoustic member includes a film-like body portion opposed to the outlet, and a periphery portion disposed to connect the body portion to the wall, the periphery portion disposed to surround the body portion, the body portion defines a first air chamber communicating with the outlet and a second air chamber into which air flows from the inlet, a portion of an outer edge of the body portion is fixed to the periphery portion, and a remainder of the outer edge of the body portion is open and is a communicating portion allowing the first air chamber to communicate with the second air chamber.