Mobility Vehicle AC Inlet Control for Multi-Direction Heat Exchange
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Solution Overview
Problem
Existing air conditioning systems for mobility vehicles, particularly roof-type systems, face challenges in ensuring sufficient outside air intake for effective heat exchange due to limited space and restrictive air intake configurations, especially in autonomous vehicles traveling in various directions.
Innovation Solution
An air conditioning system with a movable door and drive unit controlled by a controller to adjust the air inlet port's opening based on traveling direction and speed, allowing air intake from multiple directions and optimizing outside air flow to the external heat exchanger.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a roof-type air conditioning device is installed to cool or heat the rear seat, then the cooling or heating effect is improved, but the amount of outside air that can be introduced to the external heat exchanger is insufficient due to limited space on the roof
Solution Approach 1:
The air inlet port is configured to extend along the rim of the housing in a lateral direction, transitioning from a traditional single-point or single-plane intake to a distributed three-dimensional structure. This allows air to be drawn from multiple spatial locations and directions, significantly increasing the effective intake area without requiring additional roof space
2Device complexity
If the air inlet port is fixed at the front side to simplify the structure, then the device complexity is reduced, but the ability to introduce sufficient outside air is compromised when the vehicle travels in various directions
Solution Approach 1:
A movable door is installed on the housing to dynamically adjust the opening degree of the air inlet port. The door can rotate or slide along the rim to expose different portions of the inlet port, allowing the system to adaptively optimize air intake based on vehicle traveling direction, speed, and thermal load requirements while maintaining a relatively simple overall structure
Solution Approach 2:
The air inlet port structure with its movable door serves multiple functions: it provides a large intake area for sufficient outside air, adapts to various traveling directions, and can be controlled based on different operating conditions. This multi-functional design replaces what would otherwise require multiple fixed inlet ports in different locations
3Productivity
If the door opening degree is increased to maximize outside air intake, then the heat exchange efficiency is improved, but the resistance and energy loss increase
Solution Approach 1:
The controller receives feedback signals regarding vehicle traveling speed, thermal load requirements, and heat exchange performance. Based on this feedback, the controller dynamically adjusts the door opening degree to optimize the balance between heat exchange efficiency and energy loss. For example, at high speeds where natural air flow is sufficient, the door opening is reduced to minimize resistance and energy consumption
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 the efficiency of the external heat exchanger by ensuring adequate outside air intake regardless of the vehicle's direction and whether a heat pump is used, improving temperature management and reducing resistance.
Implementation Method 1
a heat exchange unit provided in the housing... a heat exchanger through which a refrigerant circulates
Implementation Method 2
a drive motor installed in the housing and configured to generate driving power... The drive motor may be configured to generate a rotational force
Data Source
AI summary
In an air conditioning system for a mobility vehicle, air is introduced into a housing in multiple directions including forward, rearward, leftward, and rightward directions, such that outside air is introduced into a heat exchanger in the housing and heat exchange is performed regardless of a traveling direction of the mobility vehicle. In addition, the amount of outside air to be provided to an external heat exchanger is adjusted depending on the traveling direction of the mobility vehicle or whether a heat pump is used, which improves the efficiency in operating the external heat exchanger.