Handheld Vacuum Flow Guide Layout for Filter Access and Airflow
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Solution Overview
Problem
Existing handheld vacuum cleaners have complex structures with many 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 well-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 simultaneously defines both the suction air path from the cyclone to the motor and the exhaust air path from the motor to the post motor filter, reducing the number of separate components while maintaining proper airflow separation and definition
Solution Approach 2:
The flow guide structure performs multiple functions: it guides suction air to the motor, guides exhaust air from the motor to the post motor filter, and helps position the motor within the housing. This multi-functional design reduces overall structure complexity while maintaining reliable airflow path 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 filter for cleaning
Solution Approach 1:
The pre motor filter is extracted from its previously enclosed position within the housing between the airflow generator and cyclone. The filter is repositioned to an accessible location where it can be easily removed and cleaned by users without requiring disassembly of the main product housing, while still maintaining its protective function
3Volume of moving object
If a compact design is pursued, then the overall size is reduced, but the air passage width for the suction motor may be insufficient
Solution Approach 1:
The airflow paths are arranged in a three-dimensional configuration within the compact housing. The flow guide structure creates vertically stacked or radially arranged suction and exhaust passages that efficiently utilize available space, maintaining adequate air passage widths while keeping the overall cleaner size compact through optimized spatial arrangement
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 cleaner maintains a compact design with efficient airflow, easy filter maintenance, and enhanced suction power by minimizing airflow losses and allowing for better distribution of heavy components, reducing user fatigue and preventing injuries.
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.