Cyclone Vacuum Airflow Guide for Compact Filter Access
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Solution Overview
Problem
Existing handheld vacuum cleaners have complex structures with numerous parts, making it difficult to access and clean filters, which leads to reduced suction ability due to dust accumulation and increased airflow resistance.
Innovation Solution
A cleaner design featuring a single flow guide that forms both suction and exhaust passages for the suction motor, simplifying the structure, reducing the number of parts, and allowing for easy separation and cleaning of the filter unit, while maintaining a compact and efficient air passage.
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 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 guide and exhaust passage guide into a single flow guide structure. The flow guide has a first portion that guides air from the cyclone to the motor and a second portion that guides air from the motor to the post motor filter, merging two separate guiding functions into one integrated component, thus reducing part count while maintaining proper air flow path definition
Solution Approach 2:
The flow guide serves multiple functions simultaneously: 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 system
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 filters for cleaning
Solution Approach 1:
The housing is segmented into removable parts, specifically the dust container can be detached to provide access to the pre motor filter. This segmentation allows the filter to remain protected during normal operation while being easily accessible for cleaning by simply removing the dust container rather than disassembling the entire product
3Volume of moving object
If the cleaner has a compact design, then the overall size is reduced, but the air passage width for the suction motor may be insufficient
Solution Approach 1:
The flow guide utilizes three-dimensional space efficiently by routing air passages in multiple directions and levels. The suction passage and exhaust passage are arranged in different spatial dimensions within the compact housing, allowing sufficient air passage width to be achieved without increasing the external dimensions of the cleaner
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
This design enhances suction force, extends battery life, and simplifies maintenance by reducing airflow loss and allowing for easy filter access, resulting in improved cleaning performance and user convenience.
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).