HVAC Register Vane Deflector for Downward Airflow Momentum
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Solution Overview
Problem
Existing automotive vehicle HVAC registers face inefficiencies in airflow direction, particularly in the extreme downward position, due to obstruction caused by vanes, which reduces airflow momentum and obstructs the desired airflow range.
Innovation Solution
The introduction of a hollow tubular housing with pivotable vanes and a deflector mechanism that blocks airflow between the inner wall and the outermost vane in extreme positions, maintaining airflow momentum and minimizing obstruction in neutral positions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If vanes are positioned to achieve extreme downward airflow direction, then directional range is improved, but airflow momentum is reduced due to obstruction between the inner wall and outermost vane
Solution Approach 1:
A deflector member is introduced as an intermediary component between the inner wall and the outermost vane. This deflector has a first position (extreme downward) where it blocks the gap to maintain airflow momentum, and a second position where it allows the gap to open for maximum directional range. The deflector mediates between the conflicting requirements of airflow momentum and directional range.
2Productivity
If the gap between the inner wall and outermost vane is blocked to maintain airflow momentum, then airflow efficiency is improved, but directional range is reduced
Solution Approach 1:
The deflector member is made movable between two positions rather than being fixed. It dynamically adjusts its position based on the vane angle: blocking the gap when the vane is in the extreme downward position to maintain airflow efficiency, and opening the gap when the vane is in other positions to maximize directional range. This dynamic adjustment resolves the contradiction between airflow efficiency and directional range.
3Productivity
If a deflector is added to block airflow in extreme positions, then airflow momentum is maintained, but device complexity increases
Solution Approach 1:
The deflector member is merged with the existing vane assembly structure. It is positioned within the housing and coordinated with the outermost vane's movement, combining its airflow-blocking function with the overall register mechanism rather than adding a completely separate system. This integration minimizes the increase in device complexity while achieving the desired airflow momentum maintenance.
Data Source
AI summary
A heating, ventilation, and air conditioning register for use in an automotive vehicle has a hollow housing having an inlet, an outlet, and an inner housing wall. A plurality of pivotable vanes are disposed proximate the outlet, including an outermost vane disposed proximate the inner housing wall that is pivotable to an extreme position. A deflector is disposed between the inner housing wall and the outermost vane, such that the deflector substantially blocks airflow between the inner housing wall when the outermost vane is in the extreme position.