Tubular Cyclone Filter Layout for Compact Handheld Vacuums
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Handheld vacuum cleaners with two-stage cyclonic separation systems require additional filters to protect motors from fine dust, leading to increased size and weight due to conventional filter configurations.
Innovation Solution
A compact design featuring an elongate tubular filter with radial inlets housed within the cyclonic separating apparatus, allowing air to flow radially into the filter, eliminating the need for an additional chamber and reducing the overall size and weight of the vacuum cleaner.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional planar filter member is used downstream of the cyclonic separating unit, then the filter can effectively protect the motor from fine dust, but the overall size of the vacuum cleaner is significantly increased
Solution Approach 1:
The filter member is nested within the cyclonic separating unit structure. The filter is positioned inside the housing that already contains the cyclonic separators, utilizing the existing internal space rather than adding external volume. This allows the filter to protect the motor while maintaining a compact overall device size.
Solution Approach 2:
The filter member is oriented with its plane perpendicular to the longitudinal axis of the cyclonic separating unit, rather than parallel to it. This dimensional reorientation allows the filter to be integrated into the existing structure without increasing the length of the device, effectively using the radial space within the cyclonic unit housing.
2Reliability
If the filter member is positioned to maximize filtration area, then motor protection is improved, but the distance from the cyclonic separating unit outlet duct increases
Solution Approach 1:
The filter member is nested within the housing structure of the cyclonic separating unit, positioned as close as possible to the outlet duct. This integration ensures that the filter is immediately downstream of the cyclonic separation, maximizing its protective function while minimizing the distance and space required between the separator and filter.
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 compact filter configuration enhances the portability and efficiency of handheld vacuum cleaners by minimizing size and weight while maintaining effective air filtration, improving accessibility and sealing to prevent ambient air ingress.
Implementation Method 1
a cyclonic separating apparatus to separate the dirt and dust from the incoming flow of dirt laden air
Implementation Method 2
a first cyclonic separating stage in the form of a relatively large cylindrical cyclone chamber and a second cyclonic separating stage in the form of a plurality of smaller cyclones
Implementation Method 3
a filter downstream of the cyclonic separating apparatus and upstream of the motor in order to protect the motor from the ingress of fine dust
Data Source
AI summary
A vacuum cleaner comprising a cyclonic separating apparatus including a dirty air inlet, a main body connected to the cyclonic separating apparatus and a motor and fan unit for generating an airflow through the cyclonic separating apparatus from the dirty air inlet to a clean air outlet, wherein the cyclonic separating apparatus includes at least a first cyclonic cleaning stage and an elongate filter arranged fluidly downstream from the first cyclonic cleaning stage, the elongate filter being housed in a duct at least partially surrounded by the first cleaning stage, and wherein the filter comprises an inlet portion and a filter portion defining a generally tubular filter chamber, the inlet portion including one or more radially facing inlets to permit air to flow into the inlet portion in a radial direction from where the air flows from the inlet portion to the filter chamber in an axial direction.