Hand Vacuum Cyclone Layout for Low-Backpressure Dirt Collection
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Solution Overview
Problem
Conventional hand vacuum cleaners with cyclonic cleaning stages often face inefficiencies due to complex air flow paths and dirt collection issues, leading to reduced performance and increased maintenance.
Innovation Solution
A hand vacuum cleaner design featuring a uniflow cyclone with a front cyclone air inlet and rear air outlet, where the cyclone axis extends rearwardly, and a dirt collection chamber external to the cyclone, optimizing air flow and dirt collection efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If conventional cyclonic cleaning stages are used with complex air flow paths, then cyclonic cleaning function is achieved, but air flow efficiency decreases and backpressure increases
Solution Approach 1:
The cyclone is divided into distinct functional zones: a tangential air inlet section for dirt intake, a central separation chamber for cyclonic action, and a rear outlet section for clean air discharge. This segmentation creates optimized local flow patterns in each zone, reducing overall flow resistance while maintaining effective separation.
Solution Approach 2:
Instead of the conventional vertical cyclone orientation, this patent employs a horizontal cyclone configuration where the cyclone axis extends horizontally from front to rear. This inversion of the traditional orientation allows for a more streamlined air flow path that reduces backpressure while maintaining cyclonic separation efficiency.
2Productivity
If cyclone air inlet is positioned in conventional locations, then cyclonic separation is achieved, but dirt collection efficiency decreases
Solution Approach 1:
The air inlet is specifically positioned at the tangential upper front portion of the cyclone, creating a localized high-velocity entry zone that maximizes cyclonic force generation. This targeted inlet placement optimizes the local flow conditions for effective dirt separation while maintaining a relatively simple overall structure.
Solution Approach 2:
The cyclone transitions from conventional vertical operation to horizontal operation, with the cyclone axis extending horizontally. This dimensional change allows the air inlet to be positioned at the front tangential upper portion, creating optimal entry conditions for horizontal cyclonic flow and improving dirt collection efficiency.
3Productivity
If multiple cyclonic stages are used, then cleaning performance is improved, but device weight and complexity increase
Solution Approach 1:
The air inlet passage and the cyclone chamber are merged into an integrated structure where the inlet passage forms the front portion of the cyclone housing. This consolidation eliminates the need for separate inlet ducts and reduces the number of components, thereby reducing weight while maintaining effective cyclonic cleaning performance.
Solution Approach 2:
The cyclone structure serves multiple functions simultaneously: it acts as the air intake system, the separation chamber, and the housing for the cleaning mechanism. This multi-functionality reduces the need for additional separate components, thereby reducing overall device weight while maintaining effective cleaning 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 design enhances air flow efficiency by reducing backpressure and facilitates easier dirt collection, improving overall cleaning performance and reducing maintenance needs.
Implementation Method 1
a cyclone unit comprising a cyclone having a cyclone axis of rotation, a front end having a cyclone air inlet and a longitudinally spaced apart rear end having a cyclone air outlet
Implementation Method 2
the cyclone axis of rotation is generally horizontal
Data Source
AI summary
A hand vacuum cleaner comprises a main body and a removably mounted air treatment member. The air treatment member has an air flow passage which comprises a handle for the air treatment member.