Vacuum Cleaner Integrated Flow Guide for Simplified Filter Access
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Solution Overview
Problem
Existing cleaners have complex structures with numerous parts, making it difficult to maintain filters and reducing suction efficiency due to dust accumulation, and require disassembly for filter access.
Innovation Solution
A cleaner design featuring a single flow guide that forms both suction and exhaust passages for the suction motor, minimizing parts and complexity, allowing for easy filter separation and maintenance, while maintaining airflow efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate structures are provided for guiding air discharged from the cyclone to the motor and for guiding air that has passed 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 passage (guiding air from cyclone to motor) and the exhaust air passage (guiding air from motor to post motor filter), thereby reducing the number of separate parts while maintaining proper airflow path definition.
Solution Approach 2:
The flow guide structure serves multiple functions: it acts as both the suction passage guide and the 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 filters for cleaning
Solution Approach 1:
The housing is divided into a main body and a detachable cover portion. The cover can be easily removed to provide direct access to the pre-motor filter and post-motor filter for cleaning and maintenance, while the main body remains intact. This segmentation allows users to access filters without disassembling the entire product.
Solution Approach 2:
The cover is designed to be dynamically removable and reattachable, transitioning from a closed protective state to an open accessible state. This dynamic design allows the filter housing to switch between protecting the filters during operation and providing easy access during 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:
Multiple airflow guidance functions are merged into a single integrated flow guide structure that contains internal passages for both suction and exhaust air flow. This consolidation maintains the optimized airflow paths while significantly reducing the overall device volume compared to using separate external components for each airflow path.
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 simplified structure enhances suction force and extends battery life by reducing airflow loss and allowing for easier filter cleaning, improving overall cleaning performance and user experience.
Implementation Method 1
a suction motor for generating suction power
Implementation Method 2
a dust-separating unit for separating dust from air which has been sucked in by the suction power
Data Source
Figure 1
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AI summary
The invention provides a cleaner comprising a suction motor (20) that generates suction force; an impeller (200) positioned at an upper portion in the suction motor (20); a first cyclone unit (110) that separates dust from air sucked by the suction force; a second cyclone unit (130) that separates dust from air received from the first cyclone unit (110); a motor housing (26, 27) covering at least the suction motor (20); a pre-filter (29) that surrounds an outer surface of the motor housing (26, 27); and air passage (232) that surrounds an outer surface of the pre-filter (29) and flows air discharged from the second cyclone unit (130) toward the suction motor (20).