Particle Separation Flow Path Curvature to Reduce Accumulation
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Solution Overview
Problem
Existing particle separation devices face challenges in efficiently separating and measuring target particles from multiple types of particles in a liquid, particularly due to particle accumulation at joints, which affects the accuracy and reliability of measurements.
Innovation Solution
A particle separating and measuring device is designed with a first flow path device that separates target particles using micro flow paths and a second flow path device for measurement, where the post-separation flow outlet of the first device connects to the first flow inlet of the second device, and a connection flow path with an inclined inner wall reduces particle accumulation, allowing smooth flow and accurate measurement.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If particles are separated using micro flow paths, then separation efficiency is improved, but particle accumulation occurs at joints affecting measurement accuracy
Solution Approach 1:
The connection flow path is designed with a curved inner wall instead of a straight or sharp-angled configuration. This curvature prevents particle accumulation by eliminating dead zones where particles could settle, allowing particles to flow smoothly from the separation chamber to the measurement chamber without clogging, thus maintaining both separation efficiency and measurement accuracy
Solution Approach 2:
The inclined inner wall of the connection flow path is designed to prevent particle accumulation before it can affect measurement accuracy. By creating a slope that promotes continuous particle movement, the design anticipates and counteracts the harmful effect of particle settling, ensuring particles remain in flow and do not accumulate at the joint between chambers
2Ease of operation
If connection flow path is added to connect separation and measurement devices, then particle flow is improved, but device complexity increases
Solution Approach 1:
The connection flow path is integrated directly into the measurement chamber structure rather than being a separate component. The inclined inner wall forms part of the measurement chamber's boundary, merging the connection function with the measurement chamber structure. This reduces the number of separate parts and simplifies manufacturing while still achieving smooth particle flow
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 ensures reliable and accurate measurement of target particles by minimizing accumulation and ensuring uniform dispersion, enhancing the efficiency of the separation and measurement process.
Implementation Method 1
The second flow path device has a connection flow path vertically extending from an opening of the first flow inlet to the first flow path, and the connection flow path having an inclined inner wall narrows from the opening of the first flow inlet toward the first flow path
Data Source
AI summary
A particle separating and measuring device includes a first flow path device having a post-separation flow outlet to allow discharge of a first fluid containing target particles to be separated, and a second flow path device receiving the first flow path device and having a first flow inlet to receive the first fluid. The first flow path device having a lower surface having the post-separation flow outlet is on the second flow path device having an upper surface having the first flow inlet in a first region, with the post-separation flow outlet facing and connecting to the first flow inlet. A connection flow path vertically extends from an opening of the first flow inlet to a first flow path, and narrows from the opening of the first flow inlet toward the first flow path.