Rotatable Filter Cleaning Unit for Power Tool Dust Collection
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Solution Overview
Problem
Existing particle collection devices for power tools face challenges in efficiently filtering and cleaning particles, leading to filter clogging and reduced operational efficiency.
Innovation Solution
A particle collection device with a filter cleaning unit that includes a rotatable filter cleaning unit and an impulse element to mechanically loosen adhered particles, combined with a fluid guiding element for efficient discharge of filtered fluid, ensuring a large filter area and maintaining fluid flow.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a filter unit is used to filter particles from fluid, then particle filtration efficiency is improved, but filter clogging occurs reducing fluid flow
Solution Approach 1:
The filter cleaning unit is designed to periodically clean the filter unit by transmitting impulses to dislodge adhered particles. The rotatable cleaning unit with impulse elements creates periodic mechanical action that removes particles from the filter surface, preventing clogging and maintaining fluid flow while preserving filtration efficiency.
Solution Approach 2:
The filter cleaning unit enables the filter system to clean itself without external intervention. By integrating the cleaning mechanism directly into the particle collection device, the system performs self-maintenance through rotational movement that generates cleaning impulses on the filter surface.
2Duration of action of stationary object
If a filter cleaning unit is added to clean the filter, then filter life is extended, but device complexity increases
Solution Approach 1:
The filter cleaning unit is integrated into the particle collection device housing, merging the cleaning function with the existing collection system. This combination approach extends filter life while minimizing additional complexity by sharing structural and spatial resources with the collection device.
Solution Approach 2:
The rotatable cleaning unit serves multiple functions: it cleans the filter surface, maintains fluid flow, and extends filter life. This multi-functionality justifies the added complexity by delivering multiple benefits from a single integrated mechanism.
3Ease of operation
If the filter cleaning unit is rotatable to clean filter surfaces, then cleaning effectiveness is improved, but manufacturing complexity increases
Solution Approach 1:
The cleaning unit is divided into discrete impulse elements arranged on a rotatable structure. This segmentation allows each element to independently contact the filter surface at different positions, improving cleaning effectiveness while enabling modular manufacturing of the cleaning components.
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 achieves efficient particle filtration, prevents filter clogging, extends filter life, and enhances operational convenience by maintaining fluid flow, while allowing easy cleaning and retrofitting.
Implementation Method 1
at least one impulse element which is designed to transmit an impulse to the filter unit, in particular to individual folds of a pleated filter of the filter unit
Implementation Method 2
at least one filter unit, in particular arranged in the collection container, for filtering particles from a fluid flowing through the collection container
Data Source
AI summary
A particle collection device, in particular a dust box, for a power tool, in particular for an eccentric or orbital sander, includes at least one collection unit for collecting particles, at least one filter cleaning unit, and at least one impulse element. The collection unit includes at least one collection container, in particular a collection receptacle, with at least one filter unit. The filter unit is arranged in the collection container for filtering particles from a fluid flowing through the collection container. The at least one filter cleaning unit is arranged on the collection container, which has at least one longitudinal axis about which the filter cleaning unit is rotatably mounted relative to the collection container and/or the filter unit. The at least one impulse element, in particular an impact extension, is configured to transmit an impulse to individual folds of a pleated filter of the filter unit.