Dust suction device
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Solution Overview
Problem
Existing dust extraction systems for hand-held power tools require external vacuum cleaners and are not self-sufficient, leading to inefficient dust management and handling challenges during drilling operations.
Innovation Solution
A self-holding dust extraction device with a built-in fan unit and separate extraction and aspiration openings, allowing for independent operation without external vacuum connections, featuring a dust collection chamber with a HEPA filter and adjustable dust nozzle for effective debris removal and reduced dust marks on workpieces.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a dust extraction device is connected to an external vacuum cleaner via a suction hose, then dust extraction capability is provided, but device complexity and handling difficulty increase due to required external connections
Solution Approach 1:
The patent combines the vacuum generation function (fan unit) and dust extraction function (extraction opening) into a single integrated device. The housing contains both the fan unit for generating negative pressure and the extraction opening for removing drilling debris, eliminating the need for separate external vacuum cleaners and suction hoses.
Solution Approach 2:
The dust extraction device performs multiple functions: it generates negative pressure through the fan unit, extracts drilling debris through the extraction opening, and adheres to the workpiece surface through the adhesion region. This multi-functional design replaces the need for separate vacuum cleaner and extraction tool.
2Productivity
If a dust extraction device uses a single opening for both dust extraction and adhesion, then device simplicity is maintained, but dust extraction efficiency decreases due to pressure loss
Solution Approach 1:
The patent divides the opening into two separate functional openings: an extraction opening for removing drilling debris and an adhesion region for generating negative pressure against the workpiece surface. This segmentation allows each opening to be optimized for its specific function, improving overall dust extraction efficiency while maintaining pressure integrity.
Solution Approach 2:
The extraction opening and adhesion region are positioned at different locations on the housing with different functional requirements. The extraction opening is positioned to directly receive drilling debris, while the adhesion region is positioned to maximize contact with the workpiece surface for effective sealing and negative pressure generation.
3Productivity
If the air channel is designed for detached state (extending from aspiration opening to fan unit), then ease of attachment is improved, but dust extraction performance deteriorates when attached due to air leakage paths
Solution Approach 1:
The air channel configuration dynamically changes based on the attachment state. When detached, the air channel extends from the aspiration opening to the fan unit for easy air flow. When attached to the workpiece, the adhesion region seals against the surface, dynamically reconfiguring the air channel to extend from the extraction opening through the housing to the fan unit, eliminating air leakage paths and optimizing dust extraction performance.
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 and convenient dust extraction directly from the drill site, minimizing external connections and ensuring effective debris removal with reduced dust marks on workpieces, enhancing operational efficiency and handling.
Implementation Method 1
there is a negative pressure within the air channel
Implementation Method 2
a fan unit, accommodated in the housing, for generating an air volume flow
Implementation Method 3
at least one extraction opening for extracting drilling debris by suction from a drill hole
Implementation Method 4
at least one aspiration opening for generating a negative pressure, in an adhesion region between the dust extraction device and a workpiece
Data Source
AI summary
The disclosure relates to a dust suction device for a hand-held power tool, comprising a housing, a fan unit accommodated in the housing for generating an air volume flow, at least one suction opening for suctioning off drill cuttings from a borehole, and at least one suction intake opening for generating a negative pressure in an adhesion region between the dust suction device and a workpiece on the basis of the air volume flow.