Airflow Register Fins With Auxiliary Flow for Longer Throw
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Solution Overview
Problem
Fluid discharge devices, such as those in automobile air conditioning systems, face a challenge in maintaining a long reaching distance of airflow when adjusting the airflow direction, as lateral vortices cause diffusion and suction of external air, reducing the effective reach of conditioned air.
Innovation Solution
The fluid discharge device incorporates a grill portion with adjustment fins and an auxiliary flow passage that aligns the auxiliary flow with the main flow, suppressing lateral vortices and preventing external air suction, thereby increasing the reaching distance of the discharged fluid.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If the airflow direction is adjusted using conventional registers with louvers and barrels, then the airflow direction can be changed, but lateral vortices form causing diffusion and suction of external air, reducing the reaching distance
Solution Approach 1:
The flow passage is divided into a main flow passage and multiple auxiliary flow passages. The adjustment fin is segmented into a main fin body and multiple auxiliary fins that can independently adjust the main flow and auxiliary flows separately, allowing precise control over flow distribution to suppress vortices while maintaining direction adjustment capability
Solution Approach 2:
Auxiliary flows are introduced as intermediary flows between the main flow and the external environment. These auxiliary flows act as a buffer that suppresses lateral vortex formation and prevents harmful suction of external air, while the main flow maintains its directed movement toward the target area
2Ease of operation
If adjustment fins are used to change airflow direction, then directional control is achieved, but the reaching distance of discharged fluid decreases due to vortex development
Solution Approach 1:
The adjustment fin and auxiliary fins are designed to rotate dynamically around flow passages, enabling continuous adjustment of airflow direction. The auxiliary fins can be rotated to different angles to optimize the balance between direction control and vortex suppression, adapting to different operational requirements
Solution Approach 2:
The invention changes the flow parameters by introducing auxiliary flows with different velocities and directions. By adjusting the ratio of auxiliary flow to main flow and their relative directions, the system optimizes both reaching distance and directional control without forming harmful lateral vortices
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 enhances the reaching distance of the airflow by reducing lateral vortex formation and external air suction, ensuring conditioned air with adjusted temperature or humidity effectively reaches the desired space.
Implementation Method 1
an auxiliary flow passage that guides a part of the fluid flowing through the fluid flow passage to the opening as an auxiliary flow
Implementation Method 2
since development of the lateral vortex formed in the main flow can be suppressed by the auxiliary flow, it is possible to suppress a diffusion of the main flow and a suction of an external fluid drawn from the outside of the device into the main flow
Implementation Method 3
The auxiliary flow passage is configured together with the adjustment fin to adjust a flow direction of the auxiliary flow discharged from the auxiliary flow passage to be aligned with the flow direction of the fluid flowing through the fluid flow passage
Data Source
AI summary
A fluid discharge device is for discharging a fluid includes a duct defining a fluid flow passage and having an opening at a downstream end of the fluid flow passage. The fluid discharge device includes a grill portion disposed in the fluid flow passage to adjust a flow direction of the fluid blown from the opening. The grill portion includes at least an adjustment fin rotatably arranged in the fluid flow passage, and is provided with an auxiliary flow passage that guides a part of the fluid flowing through the fluid flow passage to the opening as an auxiliary flow. The auxiliary flow passage is configured together with the adjustment fin to adjust a flow direction of the auxiliary flow discharged from the auxiliary flow passage to be aligned with the flow direction of the fluid flowing through the fluid flow passage.