Power Tool Dust Receptacle With Automatic Filter Dedusting
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Solution Overview
Problem
Existing collection receptacles for handheld power tools are not effective in increasing the portion of workpiece particles withheld from the environment, leading to reduced operational reliability and environmental comfort.
Innovation Solution
A collection receptacle with a mechanically rigid shell, a filter dedusting mechanism, and an optional active suction system, which includes a reflow valve and electric valve actuator for automatic dedusting, to enhance filtering performance by removing accumulated particles from the filter, thereby increasing the separation of workpiece particles from air.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a filter means is used to separate workpiece particles from air, then the portion of workpiece particles withheld from the environment is improved, but the resistance for air passing through the filter means increases over time due to particle accumulation
Solution Approach 1:
The patent implements periodic dedusting cycles where the filter means is automatically cleaned at intervals during operation. A dedusting mechanism activates periodically to remove accumulated particles from the filter surface, restoring airflow characteristics without requiring continuous intervention or system shutdown.
Solution Approach 2:
The filter dedusting mechanism is designed to automatically clean the filter means without external intervention. The system self-maintains filter performance through integrated dedusting components that activate based on predetermined criteria such as operation time or pressure differential thresholds.
2Reliability
If workpiece particles accumulate on the filter means during operation, then the filtering performance is reduced, but implementing a dedusting mechanism increases device complexity
Solution Approach 1:
The filter dedusting mechanism operates autonomously based on predetermined dedusting criteria such as operation time thresholds or pressure differential measurements. The system self-determines when dedusting is needed and executes the cleaning cycle without requiring external monitoring or manual intervention, thereby maintaining reliability while minimizing control complexity.
Solution Approach 2:
The system incorporates feedback mechanisms that monitor filter status through parameters such as pressure differential across the filter or accumulated operation time. This feedback informs the control logic when to activate the dedusting mechanism, enabling adaptive maintenance that responds to actual filter conditions rather than following fixed schedules.
3Object-affected harmful factors
If the filter means is disposed at the outlet to separate particles from air, then the environment is kept healthier, but the filter means requires periodic cleaning to maintain performance
Solution Approach 1:
The filter dedusting mechanism provides automatic self-maintenance of the filter means without requiring user intervention. The system autonomously executes dedusting cycles based on monitored criteria, eliminating the need for manual filter cleaning or maintenance operations while持续 maintaining filtering effectiveness.
Solution Approach 2:
The dedusting mechanism operates periodically rather than continuously, activating at predetermined intervals or when specific conditions are met. This periodic operation maintains filter performance while minimizing the operational impact and complexity compared to continuous cleaning 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 significantly increases the portion of workpiece particles removed from the work zone and environment, maintaining a healthier and more comfortable environment for users by improving the filtering performance and reliability of the collection receptacle.
Implementation Method 1
a filter means being disposed at the outlet. The filter means is configured to separate workpiece particles from air
Implementation Method 2
a filter dedusting mechanism configured to remove workpiece particles from the filter means
Data Source
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AI summary
A collection receptacle (14) for collecting workpiece particles is disclosed. The collection receptacle (14) is configured for coupling to a handheld power tool. The collection receptacle (14) comprises a mechanically rigid receptacle shell (22) having an inlet port on a first side (24) of the receptacle shell (22) and an outlet (28) on a second side of the receptacle shell (30). The rigid receptacle shell (22) delimits a collection volume of the collection receptacle (14). The collection receptacle (14) additionally comprises a filter means (32) being disposed at the outlet (28) and configured to separate workpiece particles from air. Furthermore, the collection receptacle (14) comprises a filter dedusting mechanism (34) configured to remove workpiece particles from the filter means (32), wherein the filter dedusting mechanism (34) is coupled with the filter means (32). Additionally, a method for operating such a collection receptacle (14) is presented. Moreover, a handheld power tool assembly comprising a handheld power tool and a collection receptacle (14) is shown.