Atomizing Disc Ribs and Grooves for UAV Droplet Control
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Solution Overview
Problem
Unmanned aerial vehicles (UAVs) with existing atomizing discs produce large droplet sizes, resulting in a limited spraying range and ineffective spraying due to the large average particle size of discharged droplets.
Innovation Solution
The atomizing disc design incorporates a bottom disc with ribs and grooves that create centrifugal flow passages, where the first grooves on the ribs cut fluid flow, reducing droplet size and enhancing uniformity, and the cover body seals these passages to increase initial droplet velocity and control, thereby improving the spraying effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Speed
If the atomizing disc rotates at high speed to extract liquid medicine by centrifugal force, then the liquid medicine is refined into droplets, but the average particle size of the droplets is large resulting in limited spraying range
Solution Approach 1:
The atomizing disc is segmented into multiple ribs (at least three ribs) that divide the liquid flow into multiple separate streams. Each rib acts as an independent flow channel, creating multiple smaller droplet streams instead of a single large droplet stream, thereby reducing average particle size while maintaining high rotation speed
Solution Approach 2:
The grooves are strategically positioned at specific locations on the ribs where the liquid flow is most intense. By placing grooves at these critical locations, the liquid is cut into smaller droplets precisely where the centrifugal force is strongest, optimizing droplet size reduction without compromising the overall rotation speed
2Productivity
If the average particle size of droplets is large, then the centrifugal extraction is efficient, but the spraying effect is affected due to limited spraying range
Solution Approach 1:
The liquid flow path is segmented by introducing grooves that divide the continuous liquid stream into multiple discrete droplet streams. This segmentation creates finer droplets that travel farther and distribute more uniformly, improving spraying effect while the rib structure maintains efficient centrifugal extraction
Solution Approach 2:
The grooves extend in the radial direction from the center to the outer edge of the atomizing disc, adding a radial dimension to the droplet formation process. This radial extension creates a three-dimensional droplet distribution pattern that enhances spraying coverage and effect
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 design achieves smaller droplet sizes and more uniform spraying, increasing the spraying range and efficiency of the atomizing disc and UAV operations.
Implementation Method 1
an atomizing disc rotates with a motor at a high speed, so that a liquid medicine in the atomizing disc is extracted from a peripheral surface of the atomizing disc by a centrifugal force, and is refined into droplets in air
Data Source
AI summary
An atomizing disc, an atomizing device with the atomizing disc, and an unmanned aerial vehicle are provided. The atomizing disc includes: a bottom disc, an upper surface of the bottom disc being provided with a liquid inlet space; and a plurality of ribs, the plurality of ribs being disposed on the upper surface of the bottom disc and being spaced apart in a circumferential direction of the bottom disc. A centrifugal flow passage in communication with the liquid inlet space is defined between two adjacent ribs and the bottom disc. An end of a rib close to an edge of the bottom disc is provided with a first groove penetrating a side portion of the rib so as to cut fluid flowing through the centrifugal flow passage.