Cleaner
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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 maintenance, reducing airflow loss, and improving 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 air flow 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 into a single flow guide component. The flow guide simultaneously forms both the suction passage that guides air from the cyclone to the motor and the exhaust passage that guides air from the motor to the post motor filter, thereby reducing the number of parts while maintaining proper air flow path definition
Solution Approach 2:
The flow guide serves multiple functions: 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 vacuum cleaner
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 divides the housing into separable sections, allowing the flow guide with integrated filters to be easily removed from the main housing. This segmentation enables users to access and clean the filters without disassembling the entire product, while the filters remain protected within the flow guide structure during normal operation
Solution Approach 2:
The design transitions from a static, permanently enclosed filter arrangement to a dynamic configuration where the flow guide can be easily attached and detached. This allows the filter accessibility to change from protected (during operation) to accessible (during maintenance) as needed
3Reliability
If multiple separate components are used for air passages, then each passage can be optimized, but the overall device size increases and compactness is reduced
Solution Approach 1:
The patent implements a nested arrangement where the exhaust passage is positioned within or adjacent to the suction passage in the flow guide. This nesting allows both passages to coexist in a compact configuration, optimizing air flow paths while minimizing the overall device volume and maintaining 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 suction efficiency, extends battery life, and simplifies maintenance by reducing the number of parts and airflow resistance, while maintaining a compact and aesthetically unchanged body.
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.