Integrated Suction Duct Layout for Hose-Free Power Tool Dust Extraction
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Solution Overview
Problem
Existing electric power tools with suction extraction systems face issues of restricted mobility and unsightly hoses due to external suction blowers, and integrated systems require separate suction blowers, complicating construction and increasing costs.
Innovation Solution
A suction extraction system with a suction conduit located partially inside the tool's housing, utilizing underpressure generated by a motor blower to collect contaminated air without external hoses, simplifying construction and enhancing mobility.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If external hoses or tubes are used to carry away air streams, then dust extraction is achieved, but the freedom of motion is restricted and the visual appearance deteriorates
Solution Approach 1:
The harmful element (external hose) is extracted and replaced by an internal solution. The suction conduit is integrated inside the housing, eliminating the need for external hoses that restrict movement. The air stream is carried away through internal passages within the housing rather than external tubes.
Solution Approach 2:
The suction conduit is nested within the housing structure. The conduit is located at least partially inside the housing, utilizing the existing internal space. This nesting approach allows the suction system to be compact and integrated without adding external components.
2Object-affected harmful factors
If external hoses or tubes are used to carry away air streams, then dust extraction is achieved, but the visual appearance deteriorates
Solution Approach 1:
The visually detrimental external hose is removed from the system. The suction function is achieved through internal integration, so no hoses or tubes hang freely from the power tool, maintaining a clean and attractive appearance.
3Object-affected harmful factors
If a separate suction blower is used, then dust extraction capability is improved, but device complexity increases
Solution Approach 1:
The motor blower located in the housing is made to serve dual functions: driving the power tool and providing suction for dust extraction. This eliminates the need for a separate suction blower, reducing component count and simplifying the overall device.
Solution Approach 2:
The suction function is merged with the existing motor blower system. The motor blower's output is utilized to create the underpressure needed for suction, combining two functions into one component and reducing system complexity.
4Ease of operation
If the suction conduit is integrated inside the housing, then freedom of motion is improved, but manufacturing complexity may increase
Solution Approach 1:
The suction conduit is nested within the existing housing structure, utilizing available internal spaces. The air course is defined at least partially by the cup part of the housing and by the housing shell, integrating the suction pathway into the existing geometry rather than adding separate external 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
This solution enhances user safety and workspace cleanliness by providing a compact, visually appealing dust collection system that eliminates the need for external blowers and hoses, ensuring dust-free operation without additional components.
Implementation Method 1
The suction extraction of the air is preferably done via an underpressure, which is generated in particular by a motor blower located in the housing
Data Source
AI summary
The invention relates to a suction system of an electric machine tool, comprising a housing (12), a pot part (20) of the housing (12), and a transmission chamber (13), with a suction device (10) for receiving air that is contaminated with drilled material, and a suction duct (11) for sucking off the air. The suction device (10) can be connected to the electric machine tool via a joining element (15) while the suction duct (11) is disposed at least in part inside the housing (12) of the electric machine tool. The invention further relates to an electric machine tool comprising a suction system.