Vehicle Ventilation Seat Through Channel Blockage Prevention
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Solution Overview
Problem
Existing ventilation seats in vehicles face issues with reduced air discharge rates due to misalignment and deformation of air channels and holes under occupant weight, leading to discomfort and poor ventilation.
Innovation Solution
A ventilation seat design featuring through channels in the seat pad that extend in desired directions, with an insert duct and cover to ensure precise air distribution and prevent blockage by the occupant's weight, eliminating the need for additional laminated structures.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional channel-type ventilation seat uses slab placed on seat pad with circular air discharge holes, then air can be discharged through holes, but channels and holes may not precisely align causing air flow loss
Solution Approach 1:
The ventilation system is divided into modular components: seat pad with channels, slab with holes, and cover with inlet hole. Each component can be manufactured separately and assembled, allowing for easier alignment and reduced precision requirements during final assembly compared to monolithic structures.
Solution Approach 2:
The cover acts as an intermediary component that connects the air supply unit to the insert duct and distributes air into the channels. It provides a reference surface and alignment features that facilitate precise positioning of the slab relative to the seat pad channels.
2Ease of operation
If conventional channel-type ventilation seat uses slab and seat pad pressed by occupant weight, then ventilation is provided, but channels and air discharge holes may be deformed and blocked
Solution Approach 1:
The cover is designed to be attached to the lower surface of the seat pad before the occupant sits, creating a pre-assembled unit where the insert duct, slab, and cover are already positioned and secured. This prevents misalignment and blockage that would occur if components were separate under occupant weight.
Solution Approach 2:
The insert duct, slab, and cover are merged into a single integrated assembly that is attached to the seat pad as one unit. This combining of components ensures that air channels remain open and aligned even under occupant weight, as the rigid cover and duct structure prevent deformation of the channels.
3Productivity
If conventional mat-type ventilation seat uses non-woven fabric and mat stacked on seat pad, then air can flow through stacked layers, but air discharge holes may still be deformed by occupant weight
Solution Approach 1:
The ventilation system uses a composite structure combining rigid components (cover, insert duct, slab) with the flexible seat pad material. This composite construction provides structural support to maintain channel and hole openings under occupant weight while still allowing air flow through the multi-layer assembly.
Solution Approach 2:
The rigid cover and insert duct are attached to the seat pad before the occupant sits, creating a protective framework that prevents deformation of the air channels and holes. This pre-assembled structure acts as a cushion against the deforming force of occupant weight.
4Productivity
If through channels extend in desired directions vertically passing through seat pad, then air discharge rate is increased, but manufacturing complexity increases
Solution Approach 1:
The complex three-dimensional channel network is segmented into multiple planar channels etched at different orientations on the seat pad surface. This segmentation allows each channel to be manufactured using simple unidirectional etching processes, avoiding the need for complex 3D manufacturing while achieving effective multi-directional air distribution.
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 enhances air discharge rates by preventing channel blockage and reducing production costs through direct air discharge via elongated channels, improving occupant comfort and ventilation efficiency.
Implementation Method 1
air supplied from an air blower is discharged through the air via holes of the non-woven fabric and the air discharge holes of the seat pad via the space between the air guide protrusions of the mat
Data Source
AI summary
A ventilation seat for a vehicle is provided. The ventilation seat is configured such that a through channel to directly discharge air is formed in a seat pad so that air supplied from an air supply unit is discharged over the seat pad through the through channel, whereby the through channel or the like can be prevented from becoming narrow or being blocked due to the weight of an occupant, resulting in increased or maximize air discharge rate.