Vehicle Air Conditioner Vent Door Shaft for Balanced Airflow
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Solution Overview
Problem
Conventional vehicle air conditioners face issues with airflow obstruction and uneven distribution due to the shaft of the sliding-type door interfering with air flow and blocking discharge areas, leading to inadequate temperature control and airflow adjustment.
Innovation Solution
The air conditioner incorporates a shaft with a guide part featuring a baffle that protrudes radially, positioned to guide airflow and act as a resistor, enhancing airflow distribution by controlling air discharge volumes and directions through center and side vents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a sliding-type door with a shaft is used to adjust the opening degree of air discharge ports, then the door can effectively control airflow direction, but the shaft obstructs the air passage and blocks the discharge area, causing uneven airflow distribution
Solution Approach 1:
The shaft is extracted from the central air passage location and repositioned to the peripheral region of the air discharge port. This extraction removes the obstructing element from the critical airflow path while preserving the door's sliding functionality for airflow direction control.
Solution Approach 2:
The shaft is repositioned from a central axial location to a peripheral radial location around the air discharge port. This dimensional repositioning allows the shaft to fulfill its mechanical function while minimizing interference with the primary airflow path.
2Device complexity
If the shaft is positioned within the air passage to actuate the sliding door, then the door mechanism can be compact, but cold or warm air fails to reach the target point and becomes dispersed
Solution Approach 1:
A guide part is introduced as an intermediary element between the shaft and the air passage. This guide part redirects the airflow around the shaft, ensuring that the shaft can actuate the door mechanism while the airflow remains undisturbed and reaches its target point effectively.
3Ease of operation
If the gear part of the shaft blocks the air discharge area, then the door can be actuated, but the airflow distribution through the discharge ports becomes uneven
Solution Approach 1:
The air discharge port is segmented into multiple regions, and the shaft with its gear part is positioned to affect only specific segments rather than blocking the entire discharge area. This segmentation allows differential airflow control across different portions of the discharge port, maintaining overall airflow distribution.
Data Source
AI summary
Disclosed is an air conditioner for a vehicle which has an improved shaft structure to enhance temperature controllability and adjust an air discharge volume, thereby improving airflow distribution. The air conditioner includes: an air conditioning case in which an air passage and a plurality of air discharge ports are formed; a cooling heat exchanger and a heating heat exchanger sequentially arranged in the air passage of the air conditioning case in an air flow direction; and a door adjusting the opening degree of the air discharge ports, wherein the door is formed in a sliding type and includes a shaft, a gear part, and a plate part which engages with the gear part to open and close the air discharge ports, and a guide part guiding the air flow direction is provided on the shaft.