Electrohydrodynamic Gas Flow Amplifier Using Coanda Effect
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Solution Overview
Problem
Existing gas flowrate generators, such as ventilators and electrodynamic systems, are prone to mechanical failure, noise, and contamination due to friction, making them unsuitable for applications requiring clean gas flows, particularly in the medical sector.
Innovation Solution
An electrohydrodynamic gas flowrate amplifier utilizing a gas flow generator and accelerator, employing the Coanda effect to create a reliable, silent, and clean gas flow, using needle electrodes and dielectric materials to generate and amplify gas flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If ventilators are used to generate gas flow, then gas flow can be generated, but the system produces noise and mechanical particles due to moving parts
Solution Approach 1:
The patent replaces mechanical ventilators with an electrohydrodynamic system that uses high-voltage electric fields to ionize gas and generate ionic wind flow. This substitution eliminates moving parts, friction, and mechanical noise while producing clean gas flow suitable for medical applications.
Solution Approach 2:
The patent employs Coanda gas flow accelerators that utilize fluid dynamics principles, specifically the Coanda effect, to amplify and direct the ionic wind generated by electrohydrodynamic electrodes. This pneumatic approach enables controlled gas flow amplification without mechanical components.
2Ease of operation
If electrodynamic gas flow generators are used, then gas flow can be generated, but friction creates small particles that contaminate the gas
Solution Approach 1:
The patent replaces electrodynamic systems with electrohydrodynamic systems that generate gas flow through ionic wind rather than mechanical motion. This eliminates friction between moving parts and prevents the generation of contaminating particles, ensuring clean gas flow for medical use.
3Ease of operation
If mechanical gas flow generators are used, then gas flow can be generated, but the system is prone to mechanical failure
Solution Approach 1:
The patent replaces mechanical gas flow generators with an electrohydrodynamic system that has no moving parts. The gas flow is generated through electric field ionization and ionic wind, eliminating mechanical wear, friction, and associated failures, thereby significantly improving reliability.
4Productivity
If conventional gas flow amplification is used, then gas flow can be amplified, but the system is complex and noisy
Solution Approach 1:
The patent uses Coanda gas flow accelerators that leverage the Coanda effect - a fluid dynamic phenomenon where a jet of gas adheres to and is amplified by a curved surface. This pneumatic approach achieves gas flow amplification through carefully designed curved channels and electrodes, eliminating the need for complex mechanical amplification mechanisms.
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 system produces a clean, efficient, and scalable gas flow suitable for medical and domestic applications, including disinfection and sterilization, while reducing mechanical complexity and noise.
Implementation Method 1
The gasflow generator is an electro-hydrodynamic gas flow generator
Implementation Method 2
The gasflow accelerator is a Coanda gas flow accelerator employing the Coanda effect to accelerate the second gasflow by first gasflow
Data Source
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AI summary
The invention discloses an electrohydrodynamic gas flowrate amplifier (1) for generating a gasflow comprising a gas flow generator (4) and an gas flow accelerator (5), where a first gas flow (2) generable by the gas flow generator (4) and directable to the gas flow accelerator (5). The gas flow accelerator (5) is constructed in a way that the second gas flow (3) is accelerable by the first gas flow (2). The gas flow accelerator (5) is a Coanda gas flow accelerator and employing the Coanda effect to accelerate the second gas flow (3) by the first gas flow (2) from the gas flow generator (4) to a gas outlet (6). The gas flow generator (4) is an electro-hydrodynamic gas flow generator. The invention also discloses a washer for washing medical instruments comprising an electrohydrodynamic gas flowrate amplifier (1). The invention also discloses a method of amplifying gas using the electrohydrodynamic gas flowrate amplifier (1). The invention also discloses the using of an electrohydrodynamic gas flowrate amplifier (1).