Automotive Air Vent Feedback Control for Constant Airflow
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Solution Overview
Problem
Existing automotive air conditioning systems lack the ability to determine the open or closed status of air vents, leading to uneven airflow distribution and increased noise when some vents are manually closed, which affects airflow control and energy efficiency.
Innovation Solution
An automotive airflow control device and method that includes a controller to receive open/closed information for air vents, calculate a control constant based on the number of closed vents, and adjust airflow to maintain constant airflow and reduce noise.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If the air conditioning system closes outlets to save energy when a driver rides alone, then energy consumption is reduced, but airflow becomes uneven and noise increases
Solution Approach 1:
The system uses airflow sensors to detect the actual airflow at each outlet and feeds this information back to the controller. The controller adjusts the vent opening degrees based on the feedback signals to maintain balanced airflow distribution even when some outlets are closed, thereby preventing noise generation while achieving energy savings.
Solution Approach 2:
The system dynamically adjusts the opening degree of air vents based on real-time airflow detection and operational conditions. Instead of fixed vent positions, the controller continuously modulates vent openings to compensate for closed outlets, maintaining optimal airflow distribution and preventing concentrated airflow that causes noise.
2Use of energy by moving object
If the system closes outlets to save energy, then energy efficiency is improved, but airflow control precision deteriorates
Solution Approach 1:
Airflow sensors provide real-time feedback on the actual airflow conditions at each outlet. The controller uses this feedback information to precisely calculate and adjust vent opening degrees, maintaining accurate airflow control even when outlets are closed for energy saving purposes.
Solution Approach 2:
The system changes the opening degree parameter of air vents based on detected airflow conditions and closed outlet configurations. By dynamically adjusting this parameter, the system maintains precise airflow control and compensation for closed outlets, ensuring accurate airflow distribution while achieving energy efficiency.
3Ease of operation
If manual vent closing is allowed, then user comfort is improved, but the system cannot determine vent status leading to poor airflow control
Solution Approach 1:
Airflow sensors continuously detect the actual airflow status at each outlet and provide feedback to the controller. This allows the system to automatically determine whether vents are open or closed based on detected airflow patterns, maintaining full awareness of vent status even when users manually adjust vents, thereby preserving airflow control capability while enhancing user comfort.
4Ease of operation
If airflow is concentrated in remaining outlets when vents are closed, then the closed vent function is achieved, but noise generation increases
Solution Approach 1:
The system dynamically adjusts the opening degree of remaining open vents when others are closed. Instead of maintaining fixed opening degrees, the controller modulates vent positions to distribute airflow evenly across all open outlets, preventing concentrated airflow and the associated noise while preserving the ability to close specific vents for user comfort.
Solution Approach 2:
The controller changes the opening degree parameter of air vents based on the status of closed vents and detected airflow conditions. By adjusting this parameter, the system redistributes airflow to prevent concentration at remaining outlets, thereby eliminating noise generation while maintaining the vent closing function for user comfort.
Data Source
AI summary
An automotive airflow control device includes one or more air vents mounted in a vehicle and configured to discharge cold air or warm air into a vehicle compartment. The device also includes a controller configured to receive open/closed information for the air vents to control airflow. The controller checks the number of closed air vents, calculates a control constant value based on the number of closed air vents, and controls airflow provided to the one or more air vents.