Vacuum Dust Collector Filter Cleaning With Reciprocating Projections
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Solution Overview
Problem
Conventional dust collectors for vacuum cleaners face issues with reduced suction force and inefficient dust removal due to accumulated dust on secondary filters, leading to increased height and uneven dust removal, as well as pressure loss and structural inefficiencies.
Innovation Solution
A dust collector design featuring a dust-removing device with projections on a dust-removing member that moves back and forth to dislodge dust from the filter, driven by a motor and cam system, allowing for increased contact area and even dust removal without increasing the overall size of the collector.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a driven unit moves back and forth along a guide member by a drive unit while projections formed on a driven member impact on a filter so as to dislodge dust accumulated on the filter, then dust removal function is provided, but since a driving unit is arranged to overlap with a driven unit, a combination structure is wide, and in case of a dust collector having a vertical structure, this results in increasing a height of the whole dust collector
Solution Approach 1:
The patent repositions the dust-removing device from a vertical arrangement (overlapping drive and driven units) to a horizontal arrangement along the circumferential direction of the filter. The dust-removing member is positioned to contact the outer surface of the filter and move horizontally, eliminating the need for vertical overlap between drive and driven units, thus reducing the height of the dust collector.
2Extent of automation
If projections formed on the driven unit or the elastic member of grid structure are used to impact on the filter so as to dislodge dust accumulated on the filter, then autonomous dust removal is achieved, but since a contact area is small between the projections formed on the driven unit or the elastic member for dislodging dust and the filter, vibration is not sent to the entire filter, and thus dust accumulated on the filter is not removed effectively
Solution Approach 1:
The patent employs a dust-removing member with multiple dust-removing projections that moves back and forth along the circumferential direction of the filter. This dynamic movement allows the projections to contact and vibrate different portions of the filter surface sequentially, ensuring comprehensive dust removal across the entire filter area while maintaining autonomous operation.
Solution Approach 2:
The dust-removing member is divided into multiple dust-removing projections distributed across its surface. This segmentation allows multiple contact points with the filter simultaneously, increasing the effective contact area and ensuring that vibration is transmitted to various portions of the filter during the back-and-forth movement, thereby improving overall dust removal efficiency.
3Object-generated harmful factors
If projections formed on the driven unit are used to impact on the filter, then dust dislodging is achieved, but dust is not removed evenly from the entire filter
Solution Approach 1:
The dust-removing member moves dynamically back and forth along the circumferential direction of the filter, allowing the multiple dust-removing projections to contact different portions of the filter surface in sequence. This dynamic movement ensures that dust is removed evenly across the entire filter area, addressing the unevenness problem inherent in static or single-point impact systems.
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 solution effectively removes dust from the entire filter surface, reduces pressure loss, and maintains a compact structure, improving dust collection efficiency and ease of assembly.
Implementation Method 1
a cam mechanism that operates the dust-removing member to reciprocate
Implementation Method 2
a centrifugal separator which separates dust flowed in by negative pressure from air
Data Source
AI summary
A dust collector includes a dust container; a centrifugal separator installed inside the dust container to separate dust from air; a filter unit installed at a discharge hole of the centrifugal separator and provided with a filter member; and a dust-removing device for dislodging dust from the filter unit. The dust-removing device includes a dust removal unit including a dust-removing member having dust-removing projections formed on an undersurface thereof, wherein the dust-removing projections move back and forth while contacting the filter unit to dislodge dust from the filter unit; and a drive unit for providing driving power to the dust removal unit.