Microparticle Nozzle With Piezoelectric Oscillation
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Solution Overview
Problem
Conventional micro fluid passageway structures are inefficient for mass production of microparticles with uniform diameters, limiting their application in drug delivery technologies.
Innovation Solution
A nozzle design featuring a tube assembly with a dual-layer liquid film formation mechanism, utilizing a piezoelectric oscillating device and amplifying portion to generate vibrational energy, which reduces the thickness of liquid films on outlet ports, forming uniform microdroplets for mass production of microparticles.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a conventional micro fluid passageway structure is used, then microparticles with uniform diameters can be formed, but mass production cannot be achieved
Solution Approach 1:
The nozzle divides the single fluid stream into multiple parallel fluid streams through multiple outlet ports (first outlet ports and second outlet port), allowing simultaneous formation of multiple microparticles. This segmentation enables mass production while maintaining uniform diameter through consistent fluid distribution across all outlets
Solution Approach 2:
The invention transitions from a two-dimensional planar micro fluid passageway to a three-dimensional dual-layer liquid film structure. The first liquid film from the first tube and the second liquid film from the second tube create a layered configuration that enables multiple outlet ports in vertical arrangement, increasing production capacity while maintaining precision
2Manufacturing precision
If a dual-layer liquid film structure is implemented, then uniform microdroplets can be formed, but device complexity increases
Solution Approach 1:
The second tube is nested within the first tube, creating a concentric dual-layer structure. This nesting arrangement allows both liquid films to be formed and delivered through a compact integrated nozzle body, reducing overall structural complexity while maintaining the dual-layer functionality for uniform microdroplet formation
Solution Approach 2:
The oscillating device is integrated into the nozzle body structure, combining the vibration generation function with the fluid delivery system. This merging eliminates the need for separate external vibration sources, simplifying the overall device while enabling precise control of liquid film thickness for uniform microdroplet formation
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
Enables the mass production of microparticles with uniform sizes, improving drug delivery technologies by enhancing production efficiency and reducing costs through convenient and cost-effective nozzle design.
Implementation Method 1
the vibrational energy generated by the combined action of the piezoelectric portion and the amplifying portion
Implementation Method 2
By using the vibrational energy generated by the combined action of the piezoelectric portion and the amplifying portion, the thickness of the dual-layer liquid film on each first outlet port is reduced
Implementation Method 3
the liquid films on the first outlet ports can more easily absorb the vibrational energy generated by the piezoelectric portion and the amplifying portion to form a standing wave
Data Source
AI summary
A nozzle for producing microparticles includes a nozzle body having an oscillating device and an amplifying portion connected to the oscillating device and located between first and second ends of the nozzle body. A through-hole extends from the first end through the amplifying portion and the second end. A tube assembly is mounted in the through-hole and includes first and second tubes between which a first fluid passageway is defined. A second fluid passageway is defined in the second tube. Two ends of the first tube respectively form a first filling port and a plurality of first outlet ports both of which intercommunicate with the first fluid passageway. Two ends of the second tube respectively form a second filling port and a second outlet port both of which intercommunicate with the second fluid passageway. A formation space is defined between the second outlet port and the first outlet ports.