Centrifugal Blower Airflow Guide for Uniform Wind Distribution
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Solution Overview
Problem
Existing vehicle air conditioner systems with centrifugal fans experience inequality in wind speed distribution due to differing pressure losses in air flows, leading to inefficient air distribution.
Innovation Solution
A blower device comprising a centrifugal blower, an air flow guide, and a casing, where the air flow guide, such as a filter or guide casing, is strategically placed to reduce the pressure loss ratio between different air flows, thereby equalizing wind speed distribution.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If no air flow guide is provided, then the device structure is simple, but the wind speed distribution is unequal due to differing pressure losses in different air flows
Solution Approach 1:
An air flow guide is introduced as an intermediary component between the centrifugal fan and the air outlet. This guide equalizes the pressure loss across different air flows by providing a controlled path, thereby achieving uniform wind speed distribution without significantly complicating the overall device structure
Solution Approach 2:
The air flow guide is strategically positioned only in regions where pressure loss inequality occurs, rather than modifying the entire air flow path. This localized approach equalizes wind speed distribution while minimizing the added structural complexity
2Productivity
If the air flow guide is positioned to equalize pressure loss, then the wind speed distribution improves, but the device complexity increases
Solution Approach 1:
The air flow guide serves as a mediator that optimizes air distribution efficiency by equalizing pressure loss across different flow paths. It achieves this without requiring complex mechanical adjustments or multiple components, maintaining relative structural simplicity while significantly improving air distribution efficiency
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 implementation of the air flow guide in the blower device significantly reduces the inequality in wind speed distribution, enhancing the efficiency of air distribution and reducing pressure loss ratios.
Implementation Method 1
a centrifugal fan that rotates about an axis, sucks air from one side of the blower device in an axial direction of the centrifugal fan, and blows the air outward in a radial direction of the centrifugal fan from a center located at the axis
Data Source
AI summary
A blower device includes a centrifugal fan that sucks air from one side of the blower device in an axial direction, and an air flow guide disposed between the centrifugal fan and the other side of the blower device in the axial direction. A first air flow from the centrifugal fan is bent toward the other side in the axial direction. A second air flow from the centrifugal fan is bent toward the other side in the axial direction, and then bent inward in the radial direction. A ratio of a pressure loss in the second air flow to a pressure loss in the first air flow before a downstream end of the air flow guide is smaller than a ratio of a pressure loss in the second air flow to a pressure loss in the first air flow before an upstream end of the air flow guide.