Cyclonic Filter Assembly for Vacuum Motor Dust Protection
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Solution Overview
Problem
Existing vacuum cleaners face inefficiencies in separating dust particles from airflow, leading to potential damage and reduced performance of motor-driven fan units due to dust and dirt passing through, despite the use of pre- and post-motor filters.
Innovation Solution
A separating apparatus comprising a first cyclonic cleaning stage, a second cyclonic cleaning stage with multiple secondary cyclones, and an elongate filter partially surrounded by the first cyclonic cleaning stage, which acts as a barrier filter to capture remaining dust particles before they reach the motor unit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If pre-motor and post-motor filters are used to protect the motor unit, then the motor unit is protected from dust damage, but the overall dust separation efficiency is reduced and filter lifetime is shortened
Solution Approach 1:
The dust separation process is divided into three distinct stages: a first cyclonic cleaning stage for coarse particles, a second cyclonic cleaning stage with multiple secondary cyclones for fine particles, and a post-motor filter for residual particles. This segmentation allows each stage to specialize in different particle sizes, improving overall separation efficiency while protecting the motor unit.
Solution Approach 2:
The first and second cyclonic cleaning stages perform preliminary dust removal before the air reaches the post-motor filter. By pre-separating the majority of particles (both coarse and fine) in the cyclonic stages, the post-motor filter only needs to handle residual particles, which extends filter lifetime and maintains high separation efficiency.
2Productivity
If multiple filters are used to ensure high dust separation efficiency, then dust particles are captured effectively, but the device complexity increases
Solution Approach 1:
The first cyclonic cleaning stage, second cyclonic cleaning stage with multiple secondary cyclones, and post-motor filter are merged into a single integrated filter assembly that can be removed as one unit from the vacuum cleaner body. This merging reduces device complexity by consolidating multiple filtration functions into one removable assembly, while maintaining high dust separation efficiency through the multi-stage approach.
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 enhances dust separation efficiency while maintaining filter longevity, ensuring the motor unit remains clean and operates efficiently by capturing fine particles effectively.
Implementation Method 1
a first cyclonic cleaning stage, a second cyclonic cleaning stage arranged downstream of the first cyclonic cleaning stage
Implementation Method 2
cyclonic separating apparatus for separating particles from a fluid flow
Implementation Method 3
the filter may be a barrier filter. As used herein the term 'barrier filter' shall be taken to mean a filter which captures and holds dirt and dust particles within the body of the filter
Data Source
Figure 1~2
Figure 3a
Figure 3b
AI summary
The present invention relates to a separating apparatus (6) for separating particles from a fluid flow. Particularly, but not exclusively, the invention relates to a vacuum cleaner (1) having such a separating apparatus for removing dust particles from a dust laden ting apparatus comprises a first cyclonic cleaning stage (20), a second cyclonic cleaning stage (22) arranged downstream from the first cyclonic cleaning stage, and an elongate filter arranged downstream from the second cyclonic cleaning stage, wherein the filter is at least partially surrounded by the first cyclonic cleaning stage.