Cyclone Dirt Outlet Gap Geometry for Consistent Separation
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Solution Overview
Problem
Cyclonic surface cleaning apparatuses face inefficiencies in dirt collection due to uniform dirt outlet gaps, which can lead to inconsistent dirt separation and airflow, affecting cleaning performance.
Innovation Solution
A cyclone design with a non-uniform dirt outlet gap, featuring a plate with a variable sidewall and a cyclone having a longitudinally extending sidewall of varying lengths, creating a gap of different heights to enhance dirt collection and airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Manufacturing precision
If a uniform dirt outlet gap is used in cyclonic surface cleaning apparatuses, then the structure is simple and easy to manufacture, but dirt separation consistency and airflow efficiency deteriorate
Solution Approach 1:
The patent applies local quality by transitioning from a uniform gap structure to a non-uniform gap structure where different sections of the dirt outlet have different gap heights. Specifically, the gap between the cyclone casing and the plate varies at different angular positions, creating localized variations in airflow characteristics that improve overall dirt separation consistency while maintaining targeted airflow patterns in specific regions.
Solution Approach 2:
The patent implements asymmetry by designing the gap structure to be non-uniform rather than symmetric and uniform. The gap height varies asymmetrically around the cyclone perimeter, with certain sections having larger gaps and others having smaller gaps. This asymmetric configuration optimizes airflow distribution and enhances dirt separation performance by creating more effective cyclonic flow patterns.
2Productivity
If a non-uniform dirt outlet gap is implemented, then dirt separation and airflow efficiency improve, but manufacturing complexity increases
Solution Approach 1:
The patent applies parameter changes by modifying the geometric parameters of the gap structure. Instead of maintaining a constant gap height, the design varies the gap height parameter across different locations. This parameter variation is achieved through specifically designed plate configurations or cyclone casing modifications that create the desired non-uniform gap pattern, thereby optimizing airflow efficiency and dirt separation performance.
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 non-uniform gap design improves dirt separation and airflow efficiency, allowing for more effective dirt collection and enhanced cleaning performance in cyclonic surface cleaning apparatuses.
Implementation Method 1
Cyclonic surface cleaning apparatuses face inefficiencies in dirt collection
Implementation Method 2
cyclone having an open end, wherein the open end comprises the dirt outlet of the cyclone
Data Source
AI summary
A hand vacuum cleaner comprises a cyclone having a dirt outlet in communication with a dirt chamber. The cyclone has a central longitudinally extending axis, wherein, when the upper end of the hand vacuum cleaner is positioned above the lower end of the hand vacuum cleaner, the central longitudinally extending axis is oriented generally horizontally and the dirt outlet comprises a slot provided in an upper portion of the sidewall of the cyclone.