Multi-Cyclone Handheld Vacuum Filtration to Prevent Clogging
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Solution Overview
Problem
Hand-held vacuum cleaners often experience clogging due to inadequate dust-air separation, particularly with single stage cyclone structures, leading to inefficiencies in filtration and cleaning effectiveness.
Innovation Solution
A hand-held vacuum cleaner design featuring a dust cup with a first cyclone and multiple second cyclones arranged in parallel, along with an air guiding pipe and filtration member, enhances dust-air separation by prolonging airflow residence time and improving cleaning efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single stage cyclone structure is used for dust-air separation, then the device complexity is reduced, but the dust throwing effect is not significant and causes clogging of filtration member
Solution Approach 1:
The single stage cyclone structure is divided into multiple stages: a first cyclone for preliminary separation and multiple second cyclones for further separation. This segmentation allows each stage to perform specialized separation functions, significantly improving the dust throwing effect and preventing clogging of the filtration member while maintaining reasonable device complexity through modular design.
2Productivity
If airflow residence time in cyclone is shortened, then the cleaning efficiency is reduced, but extending residence time increases device complexity
Solution Approach 1:
The air guiding pipe is nested inside the second cyclone, with the pipe positioned concentrically within the cyclone chamber. This nested configuration allows the airflow to follow an extended spiral path through the cyclone without requiring additional external components, thereby prolonging residence time and improving cleaning efficiency while avoiding increased device complexity.
3Reliability
If multiple second cyclones are arranged in parallel, then the dust-air separation effect is improved, but the device complexity increases
Solution Approach 1:
Multiple second cyclones are arranged in parallel and merged into a single integrated cyclone assembly that shares common structural elements, including the air guiding pipe and housing. This merging approach allows the system to achieve improved dust-air separation through multiple parallel separation stages while minimizing device complexity by eliminating redundant components and utilizing shared structures.
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 achieves a better dust-air separation effect, reducing clogging and improving cleaning performance by utilizing a two-stage cyclone separation system and extended airflow residence time within the cyclone assembly.
Implementation Method 1
The first cyclone has an air intake channel having a first air intake and a first air vent, the cyclone assembly includes a plurality of second cyclones arranged in parallel along a circumferential direction of the first cyclone
Implementation Method 2
an airflow is guided to an outer circumference of the cyclone assembly along a tangent line to a circumferential wall of the second cyclone adjacent to the guiding channel, each second cyclone has an air inducing notch to allow the airflow to enter the second cyclone in a tangent direction
Data Source
AI summary
A hand-held vacuum cleaner includes a dust cup including a first cyclone, a cyclone assembly, and a filtration member. The cyclone assembly includes a plurality of second cyclones, a guiding channel is defined between two of the plurality of the second cyclones, the guiding channel is in communication with the first air vent and an airflow is guided to an outer circumference of the cyclone assembly by the guiding channel along a tangent line to a circumferential wall of the second cyclone adjacent to the guiding channel, each second cyclone has an air inducing notch and is provided with an air guiding pipe, the filtration member is disposed along the outer circumference of the cyclone assembly, and the airflow in the outer circumference of the cyclone assembly tangentially enters the second cyclone through the filtration member and the air inducing notch.