Self-Cleaning Fluid Filtration Using Rotating Flow Shear
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Solution Overview
Problem
Cyclonic vacuum cleaners require multiple components for particle filtration, leading to a bulky design and clogging issues with pre-separating grids, which increase air flow resistance and compromise suction power.
Innovation Solution
A compact device with a chamber and spouting part arrangement that generates a rotating flow pattern, creating a shear force to automatically clean the filtering means by directing the fluid flow in a way that particles are collected and removed, eliminating the need for a cyclonic pre-separator and maintaining constant air flow resistance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a pre-separating grid is used to filter particles with low mass density, then particle separation capability is improved, but air flow resistance increases and suction power is compromised
Solution Approach 1:
The patent extracts the harmful function of the pre-separating grid by completely removing it from the system. Instead of using a grid that causes clogging and increased air flow resistance, the invention relies solely on cyclonic separation mechanisms that achieve particle separation without the harmful side effects of grid-based filtration.
Solution Approach 2:
The patent replaces the mechanical grid-based pre-separation system with a cyclonic separation system that uses rotational fluid dynamics. This substitution eliminates the mechanical contact between particles and grid structures, preventing clogging while maintaining separation effectiveness for low mass density particles.
2Reliability
If multiple filtration components are used to filter a wide range of particles, then particle separation effectiveness is improved, but device volume increases
Solution Approach 1:
The patent merges multiple filtration functions into a single integrated cyclonic separation system. By combining the pre-separation and fine separation capabilities within one cyclonic chamber, the design eliminates the need for separate grids and multiple cyclones, significantly reducing device volume while maintaining comprehensive particle separation effectiveness.
Solution Approach 2:
The cyclonic separation system is designed to perform multiple separation functions simultaneously. A single cyclonic chamber handles both coarse and fine particle separation across a wide range of particle sizes and mass densities, making the system universal and eliminating the need for multiple specialized components.
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 solution provides a compact, self-cleaning filtration system that maintains consistent air flow resistance and reduces the risk of clogging, allowing for efficient particle separation without the need for multiple filtration components.
Implementation Method 1
an arrangement of the spouting part and the particle collecting face of the filtering means with respect to each other is adapted to generate, during operation of the device, a rotating flow pattern in the fluid that is present in the chamber
Implementation Method 2
the rotating flow pattern is confined by at least a portion of the particle collecting face of the filtering means for creating a shear force between the fluid in motion and the particle collecting face
Implementation Method 3
the cyclonic pre-separator serves for separating relatively big particles with a high mass density from the air
Implementation Method 4
cyclones are space-consuming solutions for separating dust and dirt particles from quantities of air
Implementation Method 5
filtering means for removing particles from the fluid on the basis of a filtering action
Data Source
AI summary
A device (1) comprises filtering means (30) for removing particles from a fluid, which have a particle collecting face (31) for collecting particles during use of the device (1), and a chamber (10) in which a fluid is present and in which the filtering means (30) are arranged. An inlet (11) of the chamber (10) comprises a spouting part (20) which serves for spouting the fluid to be filtered in a direction towards the particle collecting face (31) of the filtering means (30). An arrangement of the spouting part (20) and the particle collecting face (31) with respect to each other is adapted to generate, during operation of the device (1), a rotating flow pattern in the fluid that is present in the chamber (10) under the influence of the flow of the fluid to be filtered, whereby particles can be blown away from the particle collecting face (31).