Forced-Vortex Cone Stack Cyclone Separator for Fine Dust Separation
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Solution Overview
Problem
Conventional cyclone separators are inefficient in separating fluids with particles of similar size or density, leading to incomplete separation of fine dust and the need for additional filtering, which results in clogging and reduced efficiency in vacuum cleaners.
Innovation Solution
A cyclone separator utilizing a vortex generating device based on the Coanda Effect to create a forced vortex with laminar swirling flow, combined with stacked cones to enhance separation efficiency and a fluid recycle system for re-circulation, ensuring particles are separated by density and size in distinct layers.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a conventional cyclone separator uses tangential inlet to generate free vortex, then the swirling velocity increases towards the center, but the separation efficiency for fine dust particles is low because smaller particles align to swirl along the outer layer with lesser centrifugal force
Solution Approach 1:
The patent inverts the conventional vortex type by generating a forced vortex instead of a free vortex. In the forced vortex, the outer layer velocity is higher than the inner layer velocity, which is the opposite of the conventional free vortex. This inversion causes smaller particles to experience greater centrifugal force at the outer layer, enabling them to be effectively separated along with larger particles.
Solution Approach 2:
The patent changes the vortex flow parameters by transitioning from free vortex flow to forced vortex flow. This parameter change fundamentally alters the velocity distribution profile, making the outer layer velocity higher than the inner layer velocity, thereby reversing the centrifugal force distribution to improve separation efficiency for fine particles.
2Manufacturing precision
If the separating open end at the cone bottom is made small to improve separation, then smaller particles can be better separated, but bigger particles cannot be completely separated out and reverse to be discharged through the outlet for smaller particles
Solution Approach 1:
The patent inverts the vortex type to forced vortex, which fundamentally changes the centrifugal force distribution. This inversion enables the system to handle both small and large particles effectively simultaneously, resolving the contradiction between separation precision and efficiency that plagues conventional designs.
3Productivity
If the cone bottom outlet is made wide to improve particle discharge, then bigger particles can be separated out more effectively, but the storage chamber becomes overwhelmed and causes strong reverse flow that carries smaller particles out through the smaller particles outlet
Solution Approach 1:
The patent inverts the vortex type to forced vortex, which reverses the centrifugal force distribution pattern. This inversion prevents the reverse flow problem by ensuring that even smaller particles experience sufficient centrifugal force at the outer layer to be properly separated, eliminating the need for compromise in outlet sizing.
4Manufacturing precision
If multiple cyclone separators are used to achieve acceptable cleanliness standard, then fine dust can be completely filtered, but the vacuum cleaner becomes bulky
Solution Approach 1:
The patent inverts the vortex type to forced vortex, which fundamentally improves separation efficiency for fine particles in a single stage. This inversion eliminates the need for multiple cyclone separators or additional filter bags, achieving high separation precision while maintaining a compact device size.
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 separator achieves high-efficiency separation without the need for additional filters, maintaining consistent suction power and reducing maintenance, suitable for industrial and household vacuum cleaners.
Implementation Method 1
A cyclone separator utilizes a vortex generating device based on the Coanda Effect to create a forced vortex with laminar swirling flow
Implementation Method 2
combined with stacked cones to enhance separation efficiency and a fluid recycle system for re-circulation, ensuring particles are separated by density and size in distinct layers
Data Source
AI summary
A vacuum cleaner and fluid separator includes a vortex generating device which generate forced vortex based on the Coanda effect. The generated vortex is the laminar swirling flow causing the fluid particles to be separated into layers. The fluid with bigger particles swirls at the outer layer, while the fluid with smaller particles swirls at the inner layer. The separator further includes stacked cones with a narrow space between the stacked cones to promote separation. The fluid separator further includes the reverse swirl facilitating cone to separate the fluid with bigger particles to be contained in the fluid storage chamber with bigger particles, and draw partial fluid swirling at the inner layer through the connection channel recycle back to the separation system. The vacuum cleaner further includes the preliminary separating section that separate big impurities out before the separation process for the fluid with smaller particles.