Nested Cyclone Vacuum Cleaner Design to Reduce Dust Backflow
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Solution Overview
Problem
Vacuum cleaners with multi-cyclone structures face challenges in efficiently collecting foreign matter and dust due to interference between cyclones, reduced suction power, and complications in air flow, leading to poor cleaning performance and dust scattering.
Innovation Solution
A vacuum cleaner design where the second cyclone is accommodated within the first cyclone, eliminating the need for guide passages and allowing for a larger number of second cyclones, enhancing suction power and preventing dust backflow by using a guide unit and pressurizing unit with roller portions to agglomerate dust.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If a multi-cyclone structure is used to collect foreign matter and dust, then cleaning performance is improved, but interference between cyclones reduces suction power
Solution Approach 1:
The second cyclone is nested within the first cyclone, with the outer circumferential surface of the second cyclone positioned inside the inner circumferential surface of the first cyclone. This nesting arrangement allows multiple cyclones to function simultaneously without interfering with each other's airflow paths, maintaining suction power while improving cleaning performance through enhanced dust collection capability
2Length of stationary object
If the dust collector is designed with a slim profile to reduce height, then device compactness is improved, but the volume for collecting dust is reduced
Solution Approach 1:
By nesting the second cyclone within the first cyclone, the design utilizes the internal space of the first cyclone for additional dust collection functionality. This vertical nesting allows the dust collector to maintain a compact height while effectively increasing the total dust collection volume through the combined capacity of both cyclones
3Manufacturing precision
If guide passages are provided in each second cyclone to separate fine dust, then separation efficiency is improved, but interference between guide passages prevents efficient placement of multiple second cyclones
Solution Approach 1:
The nested configuration allows second cyclones to be arranged vertically within the first cyclone's space. The guide passages of each second cyclone extend upward without interfering with adjacent cyclones, enabling efficient fine dust separation while accommodating multiple second cyclones in a compact vertical arrangement
4Productivity
If complicated airflow is generated by suction power to collect foreign matter, then foreign matter collection is improved, but dust in the first storage section floats and flows back upward
Solution Approach 1:
The harmful upward flow of dust from the first storage section is extracted and redirected through the guide unit. The guide unit captures dust that would otherwise float back upward and channels it into the second cyclone for further separation, converting a harmful backflow into a useful collection opportunity
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
This design improves cleaning performance by maintaining suction power, reducing dust backflow, and enhancing dust collection efficiency while simplifying the structure and reducing the height of the dust collector.
Implementation Method 1
a first cyclone provided within an outer case to filter dust from air introduced from an outside
Implementation Method 2
a second cyclone accommodated within the first cyclone to separate fine dust from air introduced into the first cyclone
Data Source
AI summary
A vacuum cleaner, including a cleaner body; and a dust collector provided in the cleaner body, wherein the dust collector includes a first cyclone provided within an outer case to filter foreign matter and dust from air introduced into the dust collector; a second cyclone accommodated within the first cyclone to separate fine dust from the air introduced into the first cyclone; a screw provided at a lower side of and surrounding the first cyclone, and having at least one vane spirally extended along a flow direction of the air introduced into the outer case to induce the inflow of foreign matter and dust filtered by the first cyclone into a first storage section.