Dual-Stage Rectifying Airflow Control for Suppressed Diffusion
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Solution Overview
Problem
Existing airflow control systems face challenges in suppressing airflow diffusion when downsizing, leading to reduced directionality and effectiveness in conveying air to specific areas.
Innovation Solution
The proposed airflow control system incorporates a cylindrical tube body with a fan, a first rectifying device featuring arc-shaped fins, and a second rectifying device with flow paths, which redirects and aligns airflow to enhance directionality and suppress diffusion, achieving a higher velocity distribution within the system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If one fan is used to form airflow for downsizing the system, then the system size is reduced, but the airflow velocity becomes higher on the outer side than on the inner side causing difficulty in suppressing diffusion
Solution Approach 1:
The airflow control system segments the airflow path by introducing two distinct rectifying devices positioned at different locations downstream of the fan. The first rectifying device addresses inner region airflow while the second addresses outer region airflow, allowing independent control of velocity distribution to suppress diffusion while maintaining compact system size
Solution Approach 2:
The rectifying devices are designed with locally optimized structures where the first rectifying device has a specific configuration for the inner circumferential region and the second rectifying device has a different configuration for the outer circumferential region. This local quality differentiation enables precise control over the velocity profile to achieve uniform airflow and suppress diffusion
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
This configuration effectively suppresses airflow diffusion, enhancing the directionality and focus of the airflow, allowing for targeted air delivery to specific areas while maintaining system efficiency.
Implementation Method 1
a fan configured to blow the gas flowing through the tube body
Implementation Method 2
a first rectifying device located between the fan and the outflow port in an axial direction of the fan and configured to redirect an airflow which is swirling
Implementation Method 3
a second rectifying device located between the first rectifying device and the outflow port in the axial direction of the fan and configured to align a direction of the airflow with a direction along the axial direction of the fan
Data Source
AI summary
In an airflow control system, a tube body includes an inflow port and an outflow port. A first rectifying device is located between a fan and the outflow port in an axial direction of the fan and is configured to redirect an airflow which is swirling. A second rectifying device is located between the first rectifying device and the outflow port in the axial direction and is configured to align the direction of the airflow with a direction along the axial direction. The first rectifying device includes a tube part which is cylindrical and fins. Each of the fins has an arc shape. The fins protrude from an inner circumferential surface of the tube part toward a central axis of the tube part and are aligned in a direction along an inner circumference of the tube part. The second rectifying device includes flow paths along the axial direction.