Nested Cyclone Hand Vacuum Design for Compact Maneuverability
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Solution Overview
Problem
Conventional hand vacuum cleaners with cyclonic cleaning stages are bulky, making them less maneuverable and unable to clean effectively in tight spaces, and lack efficient air flow designs that enhance separation efficiency.
Innovation Solution
A hand vacuum cleaner with a multistage cyclone design featuring a first stage cyclone and a second stage cyclone nested within the first, along with a screen surrounding the second stage to maintain air flow direction and enhance circulation, and air inlet passages with linear walls to improve separation efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a conventional cyclonic cleaning stage is used in a hand vacuum cleaner, then the cleaning function is provided, but the device becomes bulky and less maneuverable
Solution Approach 1:
The patent employs a nested cyclone configuration where a second-stage cyclone is positioned inside the first-stage cyclone chamber. This nesting arrangement allows both cyclonic cleaning stages to function within a compact volume, reducing the overall device size while maintaining effective cleaning capability and improving maneuverability in tight spaces
2Volume of moving object
If the cyclone chamber length is reduced to make the device more compact, then maneuverability improves, but separation efficiency may be compromised
Solution Approach 1:
By nesting the second-stage cyclone within the first-stage cyclone chamber, the patent achieves multi-stage separation in a compact configuration. This allows sufficient separation efficiency to be maintained through the staged cleaning process while keeping the overall chamber length reduced for better maneuverability
Solution Approach 2:
The cleaning process is divided into two stages with separate cyclone chambers handling different separation tasks. The first stage handles initial separation while the second stage provides refined separation, allowing each stage to be optimized for its specific function within the constrained volume
3Manufacturing precision
If air flow passage design is improved to enhance circulation, then separation efficiency increases, but device complexity increases
Solution Approach 1:
The patent employs curved air flow passages and cyclonic chambers that leverage rotational flow patterns to enhance separation efficiency. The curved geometry naturally guides air flow through the cyclonic action, improving separation without requiring complex mechanical components or control systems
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 design results in a compact, more maneuverable hand vacuum cleaner that can clean closer to corners and has improved air flow and separation efficiency, allowing for better dirt collection and reduced back pressure.
Implementation Method 1
a first stage cyclone having a first stage cyclone chamber, a first stage cyclone air inlet, a first stage cyclone air outlet and a first stage longitudinal cyclone axis about which the air rotates in the first stage cyclone chamber
Implementation Method 2
about which the air rotates in the first stage cyclone chamber
Data Source
AI summary
A surface cleaning apparatus has an air flow path from a dirty air inlet to a clean air outlet. The air flow path comprising an air inlet conduit which extends downstream from the dirty air inlet. The Surface cleaning apparatus has a first stage cyclone and a second stage cyclone downstream from the first stage cyclone, the second stage cyclone having a plurality of air inlets. The cyclone axis of rotation of the first stage cyclone extends through the air outlet of the second stage cyclone. the first stage cyclone, the second stage cyclone having a plurality of air inlets, an air outlet and a cyclone axis of rotation. A plane that is transverse to the axis of rotation of the second stage cyclone extends through the inlet conduit and the air outlet of the second stage cyclone.