Diffuser Duct with Adjustable Discharge Vent for Air Velocity Control
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Solution Overview
Problem
Existing diffuser ducts lack an intuitive and effective means to control the air exhaust flow, leading to potential discomfort due to excessive air velocity and uneven air distribution.
Innovation Solution
A diffuser duct equipped with an adjustable air discharge vent and a modulating element that allows simple and precise control of airflow velocity, ensuring optimal air distribution and comfort by reducing air velocity at floor level.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air diffusion orifices are designed to deliver high velocity airflow to generate micro-vortices and induce depression for air aspiration, then air renewal efficiency is improved, but air currents at floor level become excessive causing discomfort
Solution Approach 1:
The invention extracts the air discharge function from the main diffusion system by providing a separate discharge device with vents that can independently control air discharge. This allows the diffusion orifices to maintain high velocity for effective air renewal while the discharge vents can be adjusted to reduce excessive air currents at floor level, thereby separating the two conflicting functions.
Solution Approach 2:
The discharge device incorporates adjustable vents that can dynamically modify the air discharge flow. By making the vent dimensions adjustable, the system can adapt to different operational conditions, optimizing both air renewal efficiency and comfort levels by controlling the velocity of air currents at floor level according to actual needs.
2Ease of operation
If a discharge device with adjustable vents is added to control air discharge flow, then air velocity control and comfort are improved, but device complexity increases
Solution Approach 1:
The discharge device is designed to perform multiple functions: it controls air discharge flow, regulates air velocity, and maintains pressure balance within the diffuser duct. By consolidating these functions into a single integrated device with adjustable vents, the invention avoids the need for multiple separate components, thereby improving ease of operation while limiting the increase in device complexity.
3Ease of operation
If the vent dimension is made larger than the maximum dimension of air diffusion orifices, then air discharge flow control is improved, but air distribution uniformity may be compromised
Solution Approach 1:
The discharge device features multiple vents distributed across its structure, with each vent having specific dimensions larger than the diffusion orifices. This local configuration allows each vent to effectively control air discharge flow in its specific location while the collective arrangement of multiple vents maintains overall air distribution uniformity throughout the usage area.
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 provides intuitive control over airflow velocity, ensuring uniform air distribution and reducing drafts, thereby enhancing user comfort and air quality in the usage area.
Implementation Method 1
deliver a high velocity airflow, so as to generate strong micro-vortices, which induces a significant depression near said orifices, and thus allows the aspiration of outside air by induction
Data Source
AI summary
The invention relates to a diffuser duct having a peripheral wall (2) on which a plurality of air diffusion orifices (3a, 3b) are formed, an upstream end (1a) intended to be supplied with airflow and a downstream end (1b) opposite said upstream end in the direction of said airflow, said diffuser duct being equipped with an adjustment device (6) having at least one air evacuation vent (7) whose size is adjustable to control an air evacuation flow outside said duct, the evacuation vent (7) being formed through the downstream end (1b), the adjustment device (6) comprising a modulating element (8) for adjusting the size of the vent opening (7) through which said flow is evacuated, said element being movably mounted on the downstream end (1b).