Ventilation Hood Steady Flow Structure to Reduce Turbulence and Noise
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Solution Overview
Problem
Conventional ventilation apparatuses experience issues with non-directional and turbulent airflow from supply outlets, leading to energy inefficiency and noise pollution, posing health and safety risks to indoor workers.
Innovation Solution
The implementation of a steady flow structure using multiple L-shaped flow-guiding plates arranged in a straight line within the air supply duct, which directs airflow evenly and stably, reducing turbulence and noise levels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If air supply outlets are added to reduce energy consumption, then energy efficiency improves, but airflow becomes turbulent and non-directional
Solution Approach 1:
The air supply duct is segmented into multiple independent airflow channels using flow-guiding plates. Each channel directs airflow from a specific air supply outlet in a controlled direction, preventing turbulent mixing while maintaining the energy-saving benefits of multiple outlets.
Solution Approach 2:
Flow-guiding plates are introduced as intermediary elements between air supply outlets and the work chamber. These plates actively guide and organize the airflow, transforming the naturally turbulent flow into directed, stable streams that maintain safety while preserving energy efficiency.
2Use of energy by moving object
If multiple air supply outlets are used, then energy consumption decreases, but noise levels increase due to turbulent flow
Solution Approach 1:
By segmenting the airflow into separate channels with flow-guiding plates, the turbulent interactions between air streams are eliminated. This segmentation reduces the noise-generating turbulence while maintaining the energy efficiency benefits of multiple air supply outlets.
Solution Approach 2:
The design converts what would normally be harmful turbulent flow and noise into beneficial directed, stable airflow. The flow-guiding plates transform the chaotic interaction of multiple air streams into organized, parallel flows that are both quieter and more effective.
3Device complexity
If air flows freely in the duct without guidance, then device complexity is reduced, but airflow becomes turbulent and unsafe
Solution Approach 1:
The duct is divided into multiple controlled channels using flow-guiding plates, creating a structured flow pattern. This segmentation provides simple geometric guidance that ensures safe, directional airflow without requiring complex control systems or active devices.
Solution Approach 2:
The flow-guiding plates are passive structures that automatically organize airflow based on their geometric configuration. The system is self-regulating, using the plates' shape and arrangement to naturally direct airflow without external control, maintaining safety while keeping the device simple.
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 solution significantly reduces energy consumption by 83% and noise levels, ensuring a safe and comfortable indoor environment by providing a stable and efficient airflow system.
Implementation Method 1
the present invention provides a steady flow structure and a ventilation apparatus having the steady flow structure. The steady flow structure is comprised of multiple substantial L-shaped flow-guiding plates... for directing the airflow from the air catching plates to the respective airflow paths and blown out along the longitudinal plates
Implementation Method 2
multiple substantial L-shaped flow-guiding plates, each flow-guiding plate includes an air catching plate which is one side of the L-shape and a longitudinal plate which is the other side of the L-shape... for directing the airflow from the air catching plates to the respective airflow paths and blown out along the longitudinal plates
Data Source
AI summary
The present invention provides a steady flow structure and a ventilation apparatus having the steady flow structure. The ventilation apparatus comprises: a hood arranged indoors, an inner chamber of the hood constituting a work chamber; and a front wall of the hood formed with a front opening which opens towards the indoor environment; an air supply duct, which supplies air into the work chamber through air supply outlets provided on the hood and extending in the left and right width direction of the work chamber; and an air exhaust duct, through which the air entering the work chamber through the front opening and the air entering the work chamber through the air supply outlets are exhausted from the work chamber to outside; a steady flow structure is provided in the interior of the air supply duct, supply airflow enters into the steady flow structure in the left-right directions, and then blows out evenly and stably along the air supply outlets located along the sides of the steady flow structure after flowing through the steady flow structure.