Handheld Vacuum Cleaner Flow Guide Design to Reduce Filter Clogging
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Solution Overview
Problem
Existing handheld vacuum cleaners have complex structures with numerous parts, making it difficult to clean pre-motor filters and reducing suction efficiency due to dust accumulation, and require disassembly to access filters.
Innovation Solution
A cleaner design with a simplified structure featuring a single flow guide that forms both suction and exhaust passages for the suction motor, allowing for easy filter separation and improved airflow, reducing dust accumulation and increasing suction force.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate structures are used for guiding air discharged from the cyclone to the motor and for guiding air that has passed through the motor to the post motor filter, then the airflow paths are clearly defined, but the number of parts increases and the structure becomes complicated
Solution Approach 1:
The patent combines the suction passage guide and exhaust passage guide into a single flow guide component. The flow guide has a first portion that guides air from the cyclone to the motor and a second portion that guides air from the motor to the post motor filter, merging two separate guiding functions into one integrated structure, thereby reducing part count while maintaining reliable airflow path definition
Solution Approach 2:
The flow guide serves multiple functions simultaneously: it acts as both a suction passage guide and an exhaust passage guide, and also provides structural support for mounting the motor and filters. This multi-functionality reduces the overall number of components needed in the system
2Reliability
If the pre motor filter is disposed between the airflow generator and the cyclone and surrounded by a housing, then the filter is protected, but it requires disassembly of the product to access the filter for cleaning
Solution Approach 1:
The housing is segmented into removable parts, specifically the dust container can be detached to provide access to the pre motor filter. This segmentation allows the filter to remain protected during normal operation while being easily accessible for cleaning by simply removing the dust container rather than disassembling the entire product
3Reliability
If multiple separate components are used for airflow guidance, then each component can be optimized for its specific function, but the overall device size increases and compactness is reduced
Solution Approach 1:
The flow guide merges multiple airflow guidance functions into a single integrated component with different portions serving different purposes. The first portion guides suction air and the second portion guides exhaust air, allowing functional optimization while maintaining a compact overall device size by eliminating the need for multiple separate components
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 suction efficiency, simplifies maintenance by allowing easy filter access, and reduces the number of parts, resulting in a more compact and user-friendly cleaner with improved airflow and extended battery life.
Implementation Method 1
a suction motor that generates suction force
Implementation Method 2
a dust separation unit that separates dust from air sucked by the suction force
Data Source
AI summary
A cleaner includes: a suction motor that generates suction force; a dust separation unit that separates dust from air sucked by the suction force; a motor housing that covers the suction motor; a flow guide that surrounds an outer side of the motor housing and guides air discharged from the dust separation unit to the suction motor; and a body that forms an external appearance by surrounding the flow guide and guides air discharged from the suction motor together with the flow guide.