Nested Multistage Cyclone Assembly for Compact Hand Vacuums
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Solution Overview
Problem
Existing hand vacuum cleaners with cyclonic cleaning stages are bulky and difficult to maneuver, limiting their ability to clean tight spaces and corners effectively.
Innovation Solution
A hand vacuum cleaner design featuring a multistage cyclone assembly with a first stage cyclone and a second stage cyclone that is at least partially nested within the first stage, along with a screen positioned around the second stage cyclone to enhance air flow and circulation, allowing for a compact and more maneuverable device.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a traditional cyclonic cleaning stage is used in a hand vacuum cleaner, then effective dirt collection is achieved, but the device becomes bulky and difficult to maneuver
Solution Approach 1:
The patent implements a nested cyclone configuration where a second stage cyclone is positioned inside the first stage cyclone chamber. The second stage cyclone has its own chamber, air inlet, and air outlet, and is arranged concentrically within the larger first stage cyclone structure. This nesting arrangement allows both cyclonic cleaning stages to occupy the same spatial envelope, significantly reducing the overall size of the cyclone assembly while maintaining the dirt collection effectiveness of multiple stages.
2Ease of operation
If the cyclone assembly size is reduced for better maneuverability, then access to tight spaces is improved, but dirt collection effectiveness may be compromised
Solution Approach 1:
The patent divides the cyclonic cleaning function into two separate stages, each with its own cyclone chamber and separation mechanism. The first stage cyclone handles initial dirt separation from the air stream, while the second stage cyclone provides additional separation for finer particles. This segmentation allows the system to maintain high dirt collection effectiveness across different particle sizes while keeping the overall assembly compact through the nested arrangement of the two stages.
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 design enables better access to corners and tight spaces while maintaining effective dirt collection, improving the overall usability and efficiency of the hand vacuum cleaner.
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 hand vacuum cleaner has a cyclone assembly comprising a first stage cyclone and a second stage cyclone. The first stage cyclone has a first stage cyclone chamber and a first stage dirt collection chamber. The second stage cyclone is downstream from the first stage cyclone and at least partially nested in the first stage cyclone and has a second stage cyclone chamber and a second stage dirt collection chamber. The cyclone assembly has an openable end comprising at least one of the front end and the rear end, the openable end is moveable and closes the first stage cyclone chamber, the first stage dirt collection chamber, the second stage cyclone chamber and the second stage dirt collection chamber.