Portable dust extractor
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Solution Overview
Problem
Existing dust extractors face inefficiencies in effectively managing dust and debris accumulation at worksites and lack effective mechanisms for simultaneous filtration and cleaning of multiple filter components.
Innovation Solution
A portable dust extractor with a dual-filter system and a manifold system that includes plungers and solenoids to control air flow direction, allowing for simultaneous filtration and independent cleaning of each filter, utilizing DC and AC motors for versatile power options and angled filter planes for enhanced debris management.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single filter is used in the dust extractor, then the device structure is simple, but the filtration efficiency and continuous operation capability are reduced
Solution Approach 1:
The filter system is divided into multiple independent filter chambers (first filter chamber and second filter chamber), each with its own filter element. This segmentation allows simultaneous filtration through multiple filters, increasing overall filtration capacity and efficiency while maintaining manageable system complexity through modular design.
2Device complexity
If a single filter is used, then the device structure is simple, but the continuous operation capability is reduced due to inability to clean filters during operation
Solution Approach 1:
The system implements periodic action by alternating the operational state of the two filters. While one filter is actively filtering dust, the other undergoes cleaning cycles where reverse airflow removes accumulated debris. This periodic switching between filtration and cleaning modes enables continuous operation without interrupting the dust extraction process.
Solution Approach 2:
The filter cleaning mechanism uses the system's own suction source and airflow to automatically clean the filters during operation. The reverse airflow generated by the suction source blows accumulated dust and debris off the filter elements, eliminating the need for external cleaning equipment or manual intervention and enabling continuous self-maintenance.
3Object-affected harmful factors
If filters are cleaned by stopping operation, then filter cleanliness is improved, but productivity and continuous operation capability are reduced
Solution Approach 1:
The dual-filter system with alternating cleaning ensures that filtration action continues uninterrupted. While one filter is being cleaned via reverse airflow, the other filter maintains full filtration capacity. This continuity of useful action eliminates downtime associated with filter maintenance and sustains productivity throughout the operation.
Solution Approach 2:
The system performs filter cleaning automatically using its own suction source and airflow paths. The cleaning process does not require external equipment or cessation of operation - the suction source simply reverses airflow direction through the inactive filter to blow debris off the elements, enabling self-maintenance during continuous operation.
4Device complexity
If manual filter cleaning is used, then device complexity is low, but time consumption and productivity are reduced
Solution Approach 1:
The filter cleaning function is automated through the manifold system that directs airflow automatically. The suction source alternates between forward and reverse flow directions, with the manifold switching connections to direct clean airflow through one filter while cleaning the other. This eliminates manual intervention entirely, saving significant time and enabling continuous operation without operator involvement in cleaning tasks.
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
Enables efficient dust and debris extraction with simultaneous filter cleaning, ensuring continuous operation and improved filtration efficiency by alternating air flow directions to maintain filter cleanliness.
Implementation Method 1
at least one suction source in fluid communication with the collection chamber
Implementation Method 2
a first filter disposed within the first filter chamber, a second filter disposed within the second filter chamber
Implementation Method 3
a manifold system adjacent to the first filter chamber and the second filter chamber, wherein the manifold system is operable to permit air flow through the first filter and the second filter in a filter direction and operable to permit air flow through the one of the first filter and the second filter in a filter direction while permitting air flow through the other of the first filter and the second filter in a debris removal direction
Data Source
AI summary
A portable dust extractor is disclosed and includes a housing, a collection chamber in the housing, a first filter chamber in the housing and in fluid communication with the collection chamber, wherein a first filter is disposed within the first filter chamber, a second filter chamber in the housing and in fluid communication with the collection chamber, wherein a second filter is disposed within the second filter chamber, and a manifold system adjacent to the first filter chamber and the second filter chamber, wherein the manifold system is operable to permit air flow through the first filter and the second filter in a filter direction and operable to permit air flow through the one of the first filter and the second filter in a filter direction while permitting air flow through the other of the first filter and the second filter in a debris removal direction.