Drill Suction Head Duct Layout for Lower Air Resistance
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Solution Overview
Problem
Existing suction adapter devices for handheld power tools, such as portable drills, face inefficiencies in dust and particulate removal, leading to high air resistance and reduced operator comfort due to increased negative pressure, which limits the use time of vacuum cleaners.
Innovation Solution
The suction adapter device incorporates a secondary intake port and a suction air duct design that reduces air resistance by merging main and secondary suction air flows, enhancing suction efficiency and maintaining negative pressure, allowing for extended use of vacuum cleaners.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single main intake port is used for suction, then the device structure is simple, but air resistance increases and suction efficiency decreases
Solution Approach 1:
The single main intake port is divided into two separate intake ports: a main intake port and a secondary intake port. This segmentation allows independent optimization of each port's function and reduces overall air resistance by distributing the suction load across multiple entry points, thereby improving suction efficiency without significantly increasing structural complexity.
Solution Approach 2:
The secondary intake port is positioned at a different spatial location and orientation relative to the main intake port, creating a multi-dimensional suction approach. This dimensional differentiation allows the secondary port to capture dust and air flows that the main port cannot reach, enhancing overall suction efficiency while maintaining a relatively simple device structure.
2Productivity
If the suction air duct extends around the through-hole recess, then dust removal coverage is improved, but air resistance increases and negative pressure rises
Solution Approach 1:
The suction air duct is segmented into multiple sections: a first section extending from the main intake port, a second section extending from the secondary intake port, and these sections connect to form a complete dust carrying section. This segmentation allows each duct section to be optimized for its specific function, reducing overall air resistance while maintaining comprehensive dust removal coverage around the through-hole recess.
Solution Approach 2:
The suction flows from the main intake port and secondary intake port are merged within the dust carrying section of the suction air duct. This merging of air flows creates a unified suction path that reduces turbulence and pressure losses, thereby reducing air resistance and negative pressure while maintaining effective dust removal coverage.
3Productivity
If high negative pressure is maintained for effective dust suction, then dust removal efficiency is improved, but vacuum cleaner use time is reduced
Solution Approach 1:
The suction system is segmented into main and secondary intake paths, allowing the vacuum cleaner to operate at lower negative pressure levels while still achieving effective dust suction. The secondary intake port provides an additional air supply that compensates for the reduced pressure differential, maintaining dust removal efficiency while reducing energy consumption and extending vacuum cleaner use time.
Solution Approach 2:
The system changes the operating parameters by introducing a secondary intake port that modifies the pressure distribution and air flow characteristics. This parameter change allows the system to achieve effective dust suction at lower negative pressure levels, thereby reducing the rate of battery consumption and extending the operational duration of the vacuum cleaner.
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 design improves suction efficiency, reduces air resistance, and extends the use time of vacuum cleaners by effectively removing dust and particulates from machining areas, enhancing operator comfort and cleaning results.
Implementation Method 1
a suction air duct extending from the main intake port to the suction connector for guidance of a suction air flow
Implementation Method 2
a secondary intake port for suctioning a secondary suction air flow, which flows into the suction air duct at one end of the dust carrying section or behind the dust carrying section
Data Source
AI summary
A suction adapter device for a handheld power tool, in particular a portable drill, is disclosed. The suction adapter device includes a suction head unit for direct application to a workpiece. The suction head includes (i) a tool guidance area bounding a through-hole recess for receiving and guiding a tool, (ii) a workpiece support element adjacent the tool guidance area for application to the workpiece, (iii) a main intake port to suction a main suction air flow, (iv) a suction connector for, in particular releasable, connection of a suction hose, and (v) a suction air duct extending from the main suction opening to the suction connector to guide a suction air flow and including a dust carrying section in which the suction air duct extends about the through-hole recess and is open in the direction of the through-hole recess. The suction head unit further includes a secondary intake port for suctioning a secondary suction air flow that flows into the suction air duct at one end of the dust carrying section or behind the dust carrying section.