Handheld Cleaner Integrated Flow Guide 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 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 integrated flow guide structure. This flow guide has a first portion that guides air discharged from the cyclone to the motor, and a second portion that guides air from the motor to the post motor filter. By merging these two separate guiding functions into one component, the patent reduces the number of parts while maintaining clear airflow path definition, thus resolving the contradiction between reliability and device complexity.
2Strength
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 patent extracts the pre motor filter from its original enclosed position between the airflow generator and the cyclone, and relocates it to the dust collecting container where it can be easily accessed. Specifically, the pre motor filter is disposed at the air outlet of the dust collecting container, allowing users to access and clean the filter simply by removing the dust collecting container, without needing to disassemble the main product housing. This maintains filter protection while dramatically improving accessibility for maintenance.
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 serves multiple purposes. The flow guide includes a first portion for guiding air from the cyclone to the motor and a second portion for guiding air from the motor to the post motor filter. This multi-functional integration allows each airflow path to be optimized for its specific function while maintaining a compact overall device size, as the combined structure occupies less space than multiple separate components would require.
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.