Vehicle Blower Casing Surfaces for Low-Resistance Airflow
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Solution Overview
Problem
The existing air conditioner systems for vehicles face challenges in improving the performance and quality of the blower unit due to increased ventilation resistance and vibration, especially at higher air flow rates.
Innovation Solution
The air conditioner system incorporates a blower unit with a blower casing having an inner surface with a first and second surface, where the second surface is inclined, dividing the air flow into at least two directions. This configuration, along with a specific shape of the hub and band, minimizes ventilation resistance and reduces vibration.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the air flow rate is increased, then the ventilation performance is improved, but the vibration of the blower increases
Solution Approach 1:
The inner surface of the blower casing is divided into multiple surfaces (first surface, second surface, third surface) that segment the air flow into different directions. This segmentation allows the air flow to be distributed more evenly, reducing turbulence and vibration while maintaining high air flow rate
Solution Approach 2:
Different surfaces of the blower casing are designed with different inclinations and orientations to create local variations in air flow direction. The first surface inclines in a first direction, the second surface in a second direction, and the third surface in a third direction, optimizing air flow characteristics at different locations to minimize vibration
2Adaptability or versatility
If the number of air flows is increased, then the ventilation coverage is improved, but the ventilation resistance increases due to interference between flows
Solution Approach 1:
The blower casing inner surface employs asymmetric inclination angles for different surfaces. The first surface has a first inclination angle, the second surface has a second inclination angle, and the third surface has a third inclination angle, where these angles are different from each other. This asymmetric design allows multiple air flows to diverge in different directions, reducing interference between flows while expanding ventilation coverage
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 minimizes ventilation resistance and reduces vibration, ensuring a consistent air flow rate to the air conditioning unit, thereby improving the overall performance and quality of the blower unit.
Implementation Method 1
a blower unit configured to supply air to the air conditioning unit
Implementation Method 2
the first and second surfaces divide a direction of the air, which is allowed to flow by the blower, into at least two directions
Implementation Method 3
a plurality of wheels 14 disposed on the hub 13, and a band 15 configured to fix the wheels 14. Further, the hub 13 may be rotated by an actuator 16 configured as a motor or the like
Data Source
AI summary
An embodiment provides an air conditioner for a vehicle, the air conditioner including an air conditioning unit having a heat exchanger disposed therein, and a blower unit configured to supply air to the air conditioning unit, in which the blower unit includes a blower casing having an inner surface, and a blower configured to allow the air to flow toward the inner surface, in which the inner surface includes a first surface, and a second surface disposed on the first surface and inclined, and in which the first and second surfaces divide a direction of the air, which is allowed to flow by the blower, into at least two directions. Therefore, the air conditioner for a vehicle may improve performance and quality of the blower unit.