HVAC Case Single Rotatable Airflow Control Door
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Solution Overview
Problem
Conventional HVAC systems have complex airflow control mechanisms that are inefficient in managing different airflow levels for defrost and demist functions, lacking a straightforward and effective method to control airflow through various outlets.
Innovation Solution
An HVAC case with a single rotatable airflow control door that can be positioned to control airflow through defrost, primary demist, and secondary demist outlets, allowing for specific airflow modes such as defrost, foot, and face modes by sealing or permitting airflow through different outlets.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If conventional HVAC cases use multiple airflow control doors and door linkages to control defrost and demist airflow, then airflow control capability is improved, but device complexity increases
Solution Approach 1:
The patent combines multiple airflow control doors into a single integrated door assembly that controls airflow to defrost and demist outlets simultaneously. This single door replaces what would traditionally require multiple separate doors and linkages, reducing mechanical complexity while maintaining the ability to control airflow distribution across multiple outlets.
Solution Approach 2:
The single airflow control door is designed to perform multiple functions by controlling airflow to different outlets (defrost and demist) through its rotational position. This multi-functional door eliminates the need for separate control mechanisms for each outlet, achieving versatility with simplified structure.
2Manufacturing precision
If conventional HVAC cases use complex series of airflow control doors to manage different airflow levels, then airflow distribution precision is improved, but ease of operation deteriorates
Solution Approach 1:
The patent employs a dynamically adjustable single door that can be rotated to different positions to achieve various airflow distribution modes (defrost, demist, or combinations). This dynamic positioning replaces complex multi-door mechanisms, maintaining precise airflow control while simplifying operation to a single control action.
Data Source
AI summary
An HVAC case configured to heat airflow for a vehicle HVAC system. The HVAC case has a defrost outlet, a primary demist outlet, a secondary demist outlet, and an airflow control door. The airflow control door is configured to control airflow through each one of the defrost outlet, the primary demist outlet, and the secondary demist outlet.