Dust collector and self-cleaning method for filter thereof
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Solution Overview
Problem
Ash vacuum cleaners face issues with filter clogging due to dust accumulation, leading to reduced effective vacuuming time and shortened filter lifespan, along with the need for frequent filter disassembly and cleaning, which burdens users.
Innovation Solution
A self-cleaning vacuum cleaner system that includes a self-cleaning air passage and an air supply passage, allowing airflow to enter and circulate through the filter to dislodge dust, extending suction time and filter life while reducing maintenance workload.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the vacuum cleaner operates continuously with large air intake, then the dust collection efficiency is improved, but dust accumulates on the filter causing reduced effective vacuuming time
Solution Approach 1:
The system performs preliminary cleaning action by blowing air through the filter before dust accumulation becomes severe. The self-cleaning air passage is designed to periodically reverse airflow and dislodge dust particles from the filter surface, preventing clogging and maintaining filtration efficiency throughout the operating cycle.
Solution Approach 2:
The invention uses pneumatic principles by introducing a self-cleaning air passage that directs high-velocity air flow through the filter element. This reverse airflow creates pressure differential that removes accumulated dust from the filter surface, resolving the contradiction between continuous operation and filter clogging.
2Productivity
If the vacuum cleaner operates with large air intake, then the dust collection capacity is improved, but the filter service life is reduced
Solution Approach 1:
The self-cleaning system performs preliminary maintenance by regularly removing dust accumulation from the filter surface before it causes permanent damage or degradation. This extends the filter's operational life by preventing excessive loading and material fatigue.
Solution Approach 2:
The filter performs self-service cleaning through the integrated self-cleaning air passage. The system automatically blows reverse airflow through the filter during operation or idle periods, eliminating the need for manual disassembly and cleaning, thereby extending service life while maintaining high dust collection capacity.
3Reliability
If the filter is cleaned frequently by disassembly, then the vacuuming performance is maintained, but the user workload increases
Solution Approach 1:
The filter performs self-service cleaning through the automated self-cleaning air passage system. High-velocity air flow is directed through the filter element, automatically dislodging and removing accumulated dust without requiring user intervention for disassembly or manual cleaning, thus maintaining vacuuming performance while eliminating cleaning workload.
Solution Approach 2:
The invention replaces the mechanical manual cleaning process with an automated pneumatic cleaning system. Instead of requiring users to physically disassemble and wash the filter, the system uses controlled air flow to perform cleaning automatically, significantly reducing ease of operation burden.
4Reliability
If manual filter cleaning is required frequently, then the filter effectiveness is maintained, but user experience deteriorates
Solution Approach 1:
The filter effectiveness is maintained through self-service automated cleaning. The self-cleaning air passage system continuously or periodically blows reverse airflow through the filter, removing dust accumulation and maintaining filtration effectiveness without requiring user intervention, thereby preserving both reliability and user experience.
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 self-cleaning system effectively prolongs the filter's service life, reduces maintenance frequency, and enhances user experience by maintaining suction efficiency and ease of operation.
Implementation Method 1
a filter, a fan, and a main air outlet; the filter has a clean side and an unclean side
Implementation Method 2
the upstream end of the self-cleaning air passage is communicated to the air outlet chamber, and the downstream end of the self-cleaning air passage is communicated to the clean side of the filter
Data Source
AI summary
A vacuum cleaner includes an air inlet, a filter, a fan, and a main air outlet. The filter has a clean side and an unclean side. An unclean air chamber is formed between the air inlet and the unclean side of the filter. A first air chamber is formed between the clean side of the filter and the fan. An air outlet chamber is formed between the fan and the main air outlet. The upstream end of the air outlet chamber is connected to the first air chamber. An airflow may enter the vacuum cleaner from an external environment via the air inlet under the action of the fan, and sequentially passes through the unclean air chamber, the filter, the first air chamber and the air outlet chamber the main air outlet. The vacuum cleaner may include a self-cleaning air passage and an air supply air passage.