Cyclone Bin Layout for Compact Hand Vacuum Filtration
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Solution Overview
Problem
Existing hand vacuum cleaners face challenges in achieving a compact ergonomic design while maintaining effective air filtration and cyclonic separation, often resulting in clogged cyclonic stages and inefficient particle separation.
Innovation Solution
The design incorporates a cyclone bin assembly with a dirt collection chamber positioned above the cyclone chamber, an annular pre-motor filter with increased height, and a non-cyclonic stage with a screen for initial particulate removal, allowing for a linear arrangement of components and reduced overall size.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If a compact design is implemented in hand vacuum cleaners, then the device size is reduced, but the air filtration efficiency and cyclonic separation performance deteriorate
Solution Approach 1:
The pre-motor filter is nested within the cyclone assembly structure, with the filter housing forming part of the cyclone bin assembly. The filter is positioned concentrically within the cyclone chamber, allowing the filtration system to be integrated into the separation mechanism without increasing overall device volume.
Solution Approach 2:
The design transitions from a linear axial arrangement to a three-dimensional configuration where the pre-motor filter is positioned radially within the cyclone assembly. The filter housing extends in multiple directions from the cyclone axis, utilizing vertical and radial spaces to accommodate filtration components without increasing the horizontal footprint.
2Volume of moving object
If a compact design is implemented in hand vacuum cleaners, then the device size is reduced, but the cyclonic separation performance deteriorates
Solution Approach 1:
The cyclone separation system is nested within the filter housing structure, with the cyclone chamber positioned concentrically around the pre-motor filter axis. The dirt collection cup is nested within the cyclone assembly, allowing all separation and collection functions to be integrated in a compact radial configuration.
Solution Approach 2:
The cyclone assembly utilizes vertical stacking to achieve effective separation height without increasing horizontal dimensions. The cyclone chamber extends vertically with optimized flow paths that maximize separation efficiency within a compact footprint, utilizing the vertical dimension to maintain performance while reducing overall device volume.
3Device complexity
If the pre-motor filter is positioned closer to the cyclone, then the device complexity is reduced, but the air distribution uniformity across the filter deteriorates
Solution Approach 1:
The air distribution system employs asymmetric internal flow channels within the filter housing that compensate for the close positioning of the filter to the cyclone. The header geometry is designed with varying cross-sectional areas and flow path lengths that balance the air distribution across the filter surface, achieving uniform flow despite the compact asymmetric layout.
Solution Approach 2:
The filter housing incorporates locally optimized flow distribution features, including variable thickness walls and strategically positioned flow channels that direct air uniformly across different regions of the pre-motor filter. The header design provides enhanced air pathways in regions that would otherwise receive excessive or insufficient flow, ensuring uniform distribution throughout the compact structure.
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 air filtration efficiency, reduces the risk of cyclonic stage clogging, and enables a more compact and ergonomic hand vacuum cleaner with improved particle separation capabilities.
Implementation Method 1
air treatment member, a pre-motor filter and a suction motor provided in the air flow path
Implementation Method 2
cyclone and a generally annular filter wherein the cyclone axis of rotation and a central axis of the generally annular filter member are generally parallel but offset
Implementation Method 3
a pre-motor filter positioned in the air flow path rearward of the air treatment member
Data Source
AI summary
A hand vacuum cleaner having a dirt collection chamber that is external to the cyclone chamber, wherein the dirt collection chamber is positioned above the cyclone chamber when the hand vacuum cleaner is oriented with the upper end of the hand vacuum cleaner above the lower end of the hand vacuum cleaner.