Vehicle Air Vent Baffle Layout for Left-Right Temperature Uniformity
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Solution Overview
Problem
Conventional vehicle air conditioners experience a right and left temperature difference between the center vent and side vent due to mixing of cold and warm air, which is not effectively addressed by existing baffles.
Innovation Solution
The air conditioner incorporates a first baffle to reduce the cross-sectional area of the flow path for side vents in a first mode and a second baffle to reduce the cross-sectional area of the flow path for center vents in a second mode, optimizing the discharge temperature uniformity by adjusting the flow paths of the center and side vents.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If cold outdoor air is supplied to the upper part for defrosting, then defrosting performance is improved, but indoor temperature drops
Solution Approach 1:
The air conditioning system is divided into two separate air flow paths: an upper flow path for cold outdoor air to the defrost vent, and a lower flow path for warm indoor air to the floor vent. This segmentation allows simultaneous defrosting and indoor temperature maintenance without interference between the two functions
Solution Approach 2:
The invention uses vertical spatial separation with the partition wall to create distinct upper and lower flow paths. The upper path handles defrosting while the lower path handles heating, utilizing the vertical dimension to resolve the conflict between these two temperature control objectives
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
The solution effectively reduces the temperature difference between the center and side vents in both vent and bi-level modes, ensuring stable and uniform air discharge temperatures to passengers.
Implementation Method 1
a first baffle blocking a portion of a flow path of the side vent
Implementation Method 2
a second baffle blocking a portion of a flow path of the center vent
Implementation Method 3
a cooling heat exchanger and a heating heat exchanger sequentially formed in an air flow path
Implementation Method 4
a cooling heat exchanger and a heating heat exchanger sequentially formed in an air flow path
Data Source
AI summary
A vehicle air conditioning device includes an air conditioning case having a plurality of air discharge ports, a cooling heat exchanger and a heating heat exchanger sequentially formed in an air flow path of the air conditioning case, wherein the air discharge ports each have a face vent composed of the center vent and the side vents, a left-right temperature difference reduction means for reducing the temperature difference between a discharge port of the center vent and discharge ports of the side vents by reducing, in a first air conditioning mode, the cross-sectional area of the flow path through which air is discharged to the center vent, and by reducing, in a second air conditioning mode, the cross-sectional area of the flow path through which air is discharged to the side vents.