Handheld Vacuum Cleaner Flow Guide Design for Simplified Filter Access
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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 the number of parts and maintaining suction efficiency.
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 well-defined, but the number of parts increases and the structure becomes complicated
Solution Approach 1:
The patent combines the suction passage and exhaust passage guidance functions into a single integrated flow guide structure. This flow guide simultaneously defines the path for air discharged from the cyclone to the motor and the path for air that has passed through the motor to the post motor filter, reducing the number of separate components while maintaining proper airflow separation and definition
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 filters for cleaning
Solution Approach 1:
The patent segments the vacuum cleaner into modular components, with the flow guide and filters positioned in a configuration that allows easy access. The pre motor filter and post motor filter are arranged such that they can be accessed and removed for cleaning without requiring complete disassembly of the housing, while still maintaining their protective positioning within the airflow path
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 patent merges multiple airflow guidance functions into a single integrated flow guide structure that performs multiple functions: guiding air from the cyclone to the motor, guiding air from the motor to the post motor filter, and maintaining proper airflow separation. This integration maintains functional optimization while significantly reducing the overall device volume and improving compactness
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 airflow efficiency, increases suction force, and simplifies filter maintenance by allowing for easy access and cleaning of pre-filters, thereby extending battery life and improving overall cleaning performance.
Implementation Method 1
a suction motor that generates 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.