Vacuum Cleaner Air Passage Layout for Easy Filter Access
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Solution Overview
Problem
Existing 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, minimizing parts and maintaining a compact, non-deformed external appearance, with a filter unit that can be easily separated for maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If separate structures are provided for guiding air from cyclone to motor and from motor to post motor filter, then air flow paths are established, but the number of parts increases and structure becomes complicated
Solution Approach 1:
The dust container cover integrates multiple functions: it serves as both the cover for the dust container and as the air passage structure that guides air from the cyclone to the motor and from the motor to the post-motor filter. This merging of functions reduces the number of separate parts while maintaining reliable air flow paths.
Solution Approach 2:
The dust container cover is designed as a multi-functional component that simultaneously performs sealing, air guiding, and structural support functions. It includes integrated air passages that eliminate the need for separate air guiding structures, thereby simplifying the overall device structure.
2Reliability
If pre motor filter is surrounded by housing and disposed between airflow generator and cyclone, then filter protection is achieved, but filter accessibility for cleaning becomes difficult
Solution Approach 1:
The dust container is divided into separable parts: the dust container body and the dust container cover. The pre-motor filter is attached to the cover, which can be easily removed from the body. This segmentation allows users to access the filter for cleaning by simply separating the cover from the body without disassembling the entire vacuum cleaner.
Solution Approach 2:
The dust container cover is designed to be dynamically separable from the dust container body through a simple coupling mechanism. This dynamic design enables easy access to the pre-motor filter for maintenance while maintaining protection during operation.
3Reliability
If multiple separate structures are used for air passages, then complete air flow control is achieved, but the overall device size increases
Solution Approach 1:
The air passages are integrated into the dust container cover itself rather than being separate components. The cover includes built-in channels that guide air from the cyclone to the motor and from the motor to the post-motor filter, eliminating the need for additional air passage structures and reducing overall device volume.
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 airflow efficiency, increases suction force, and extends battery life by reducing airflow loss and simplifying the structure, while allowing for easy filter cleaning and maintenance.
Implementation Method 1
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)
Implementation Method 2
a suction motor (20) that generates suction force; an impeller (200) positioned at an upper portion in the suction motor (20)
Data Source
Figure 1
Figure 2
Figure 3
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).