Vehicle Air-Conditioning Vent Door Guide Member Temperature Control
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Solution Overview
Problem
Existing air-conditioning devices for vehicles face challenges in maintaining a uniform temperature across multiple outlets, particularly in bi-level mode, where a significant temperature difference occurs between the center and side vent outlets, affecting comfort and efficiency.
Innovation Solution
The air-conditioning device incorporates a temperature adjusting unit with a cooling and heating heat exchanger, an outlet unit with adjustable vent doors, and a fixed guide member that controls airflow to suppress temperature differences between center and side vent outlets, allowing for multiple operating modes, including face, heat, and bi-level modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If the air-conditioning device opens both center vent outlet and side vent outlet in bi-level mode, then air supply to upper body and feet is improved, but temperature difference between center and side vent outlets increases
Solution Approach 1:
The patent applies local quality by providing different air temperatures to different outlets based on their specific functions. The center vent outlet receives cooler air for upper body comfort, while the side vent outlet receives warmer air for preventing window condensation, optimizing each outlet's performance for its specific purpose
Solution Approach 2:
The air-conditioning device segments the air supply system into separate temperature control zones for the center vent outlet and side vent outlet. By independently controlling the temperature of air supplied to each outlet, the system resolves the contradiction between providing versatile blowing modes and maintaining uniform temperature across all outlets
2Reliability
If the air-conditioning device supplies high-temperature air to side vent outlet for window heating, then window condensation is prevented, but temperature uniformity across outlets is reduced
Solution Approach 1:
The patent applies local quality by providing different air temperatures to different outlets based on their specific functions. The center vent outlet receives cooler air for upper body comfort, while the side vent outlet receives warmer air for preventing window condensation, optimizing each outlet's performance for its specific purpose
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
This configuration enables the air-conditioning device to provide comfortable and efficient air conditioning by minimizing temperature variations between outlets, ensuring suitable air temperatures for different compartments and windows, while maintaining high-temperature air supply where needed.
Implementation Method 1
a temperature adjusting unit including a cooling heat exchanger and a heating heat exchanger for adjusting a temperature of the air supplied from the case to the compartment
Data Source
AI summary
An air-conditioning device for vehicle has a case and an outlet unit. The outlet unit has a vent door. The vent door is capable of stopping at a face mode position where a center vent outlet and a side vent outlet are opened, a bi-level mode position where a center vent outlet and the side vent outlet are opened, and a heat mode position where the center vent outlet is closed and the side vent outlet is opened. The vent door is movable from the face mode position to the heat mode position via the bi-level mode position. The case has a fixed guide member. The fixed guide member controls an air flow in the case in the bi-level position by facing the vent door positioned in the bi-level mode position.