Vehicular Air Conditioner Back Seat Vent Spatial Arrangement
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Solution Overview
Problem
Conventional vehicular air conditioners face a reduction in air blowing volume to the front seat vents due to the placement of the back seat vent opening, which also functions as an auxiliary vent, leading to insufficient air mixing and reduced air flow to the back seat.
Innovation Solution
The air conditioner design includes a defroster opening, front seat vent opening, and foot opening positioned to oppose the air mix area, with a back seat vent opening placed near the foot opening, allowing the back seat vent door and foot door to be opened and closed downstream from the vent foot switching door, enabling independent control of front and back seat vents and maintaining air mixing performance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the back seat vent opening is placed near the front seat vents to share space, then the air conditioner size is reduced, but the air blowing volume to the front seat vents is reduced
Solution Approach 1:
The vent system is segmented into front seat vents and back seat vents with independent control. The back seat vent opening is positioned separately from the front seat vents, allowing each to have optimized opening areas and airflow paths without mutual interference, thus maintaining high air blowing volume to front seat vents while keeping the overall unit compact through efficient spatial arrangement.
Solution Approach 2:
The back seat vent opening is positioned in a different spatial dimension relative to the front seat vents, specifically near the foot opening area rather than directly adjacent to front seat vents. This dimensional separation allows both vent systems to maintain adequate opening areas while sharing the same compact housing space.
2Device complexity
If the back seat vent opening shares the front seat side vent opening as an auxiliary vent, then the device complexity is reduced, but the air mixing performance is insufficient
Solution Approach 1:
The air mixing function is segmented into dedicated mixing areas for front seat and back seat vents. The back seat vent opening is positioned to access a separate air mixing zone near the foot opening, ensuring sufficient air mixing performance independent of the front seat vent system, while the overall structure remains relatively simple.
Solution Approach 2:
A dedicated air mixing area serves as an intermediary zone between the air conditioner components and the back seat vent opening. This intermediary mixing area ensures proper air mixing before air is supplied to the back seat vent, maintaining reliable air mixing performance without requiring complex integrated structures.
3Productivity
If the vent opening area is increased to improve air flow volume, then the air blowing volume is improved, but the air conditioner size is increased
Solution Approach 1:
The back seat vent opening is positioned in the foot opening area, utilizing vertical and lateral space efficiently. This positioning allows adequate opening area for high air blowing volume without increasing the overall footprint or volume of the air conditioner unit, as it exploits previously underutilized spatial zones within the existing housing.
Data Source
AI summary
A vehicular air conditioner having an air conditioner case including an air mix area, where a defroster opening, a front seat vent opening, a foot opening, and a back seat vent opening are located on the air conditioner case and configured to open and close the air mix area. A defroster door is configured to open and close the defroster opening. A vent foot switching door is configured to open and close the foot opening and the front seat vent opening selectively. A foot door is configured to open and close the foot opening. A back seat vent door is configured to open and close the back set vent opening. The back seat vent opening is positioned in a vicinity of the foot opening and the back seat vent door and the foot door are downstream from the vent foot switching door.