Projector Cooling Duct Partition for Adaptive Airflow Control
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Solution Overview
Problem
Existing automotive headlight units suffer from inefficient cooling and condensation issues due to unoptimized airflow management, leading to malfunctions and aesthetic degradation.
Innovation Solution
A projector block with a cooling circuit featuring at least two air circulation ducts and a movable partition to vary airflow distribution, controlled by a system that adjusts airflow based on temperature and humidity sensors to optimize cooling and prevent condensation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a fan provides constant airflow to lighting modules, then cooling is maintained, but cooling efficiency is not optimized and cannot adapt to temperature changes
Solution Approach 1:
The patent implements a dynamic airflow distribution system using a movable partition that can adjust its position to vary the proportion of airflow directed to different lighting modules. The control unit receives temperature data from sensors and dynamically adjusts the partition position to optimize cooling distribution based on real-time thermal conditions, transforming the static constant airflow system into an adaptive dynamic system.
Solution Approach 2:
The system changes the airflow distribution parameter dynamically by moving the partition between different positions. This allows the proportion of airflow reaching each lighting module to be adjusted as a variable parameter based on temperature sensor feedback, enabling the system to adapt to changing thermal conditions and optimize cooling efficiency under different operating scenarios.
2Reliability
If thermal shock occurs due to temperature difference between engine and outside environment, then condensation appears on the lens, but aesthetic appearance degrades and customer satisfaction decreases
Solution Approach 1:
The system performs preliminary action by detecting temperature and humidity conditions that predispose the system to condensation formation. When sensors detect conditions approaching the dew point, the control unit proactively adjusts airflow distribution to prevent condensation on the lens, rather than waiting for condensation to occur. This preventive approach addresses the thermal shock issue before it manifests as visible condensation.
Solution Approach 2:
The patent implements a feedback mechanism where temperature and humidity sensors continuously monitor environmental conditions and internal temperatures. The control unit processes this feedback data and adjusts the movable partition position accordingly to maintain conditions that prevent condensation formation on the lens, creating a closed-loop control system that actively responds to changing environmental conditions.
3Productivity
If multiple lighting modules are cooled simultaneously, then all modules are cooled, but airflow cannot be optimized for individual module needs
Solution Approach 1:
The cooling system is segmented into multiple independent airflow channels, each serving specific lighting modules. The movable partition divides the single airflow source into separate streams that can be independently directed to different modules. This segmentation allows the system to maintain cooling coverage for multiple modules while enabling individual optimization of airflow distribution to each module based on its specific thermal requirements.
Solution Approach 2:
The patent applies local quality by allowing different proportions of airflow to be directed to different lighting modules based on their individual cooling needs. The movable partition enables localized adjustment of cooling intensity for each module, so that modules generating more heat receive higher airflow proportions while cooler modules receive less, optimizing overall cooling efficiency rather than applying uniform cooling to all modules.
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
Enhances cooling efficiency and reduces condensation, ensuring reliable operation and improved aesthetics by adaptively managing airflow according to environmental and operational conditions.
Implementation Method 1
a fan 102 operates as soon as the vehicle engine is running and allows a constant flow of air to be diffused towards these lighting modules 103a, 103b
Implementation Method 2
at least one element for varying a proportion of the airflow distributed in each of said at least two ducts - at least two lighting modules, and a clean air circulation duct connected to each lighting module. The projector block is remarkable in that said at least one variation element is a movable wall arranged in a junction zone of an air inlet duct
Data Source
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AI summary
The invention relates to a projector unit (1) comprising a cooling circuit (2a, 2b) provided with at least two air circulation ducts (3a, 3b, 3c, 3d, 3e) connected to at least one shared device (4) for generating an air flow, notably a ventilator, and further provided with at least one element (5a, 5b, 5c) for varying a proportion of the air flow distributed to each of the at least two ducts (3a, 3b, 3c, 3d, 3e).