Switchable Ejector Suction Paths for Self-Cleaning Fume Collection
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Solution Overview
Problem
Existing suction apparatuses for machines like welding and additive manufacturing are not maintainable, versatile, or compact, requiring frequent maintenance due to the generation of dust, hydrogen sources, and fumes, which are not adequately addressed in existing technologies.
Innovation Solution
A suction apparatus with a path switching unit that allows for both suction and ejection functions, featuring a configuration with multiple detachable pipe members and a filter for efficient cleaning and maintenance, enabling easy switching between suction and ejection modes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a suction apparatus is provided in welding and additive manufacturing machines, then dust, hydrogen sources, and fumes can be removed, but maintenance such as cleaning and filter replacement is required frequently
Solution Approach 1:
The suction apparatus is equipped with a blowout port that enables self-cleaning functionality. Compressed gas can be supplied through the blowout port to blow out dust and debris from the suction chamber and internal passages, allowing the apparatus to clean itself without requiring external maintenance equipment or disassembly, thereby reducing maintenance frequency and effort
2Adaptability or versatility
If a suction apparatus is designed to be compact and portable, then it can be moved frequently between work positions, but it may not have sufficient capacity for effective suction
Solution Approach 1:
The suction apparatus is divided into multiple detachable components including a suction chamber, suction nozzle, and blowout port that can be separated from each other. This segmentation allows the apparatus to be disassembled for easy transport while maintaining sufficient suction capacity during operation, and enables cleaning of individual components without disassembling the entire system
3Device complexity
If the suction apparatus has a simple structure, then it is easier to manufacture and maintain, but it may not effectively collect and remove all types of contaminants
Solution Approach 1:
The suction apparatus incorporates a multi-functional design where the same suction chamber and suction nozzle are used for both capturing contaminants during welding operations and receiving compressed gas for cleaning operations. The blowout port serves dual purposes as both a cleaning interface and a structural component, eliminating the need for separate cleaning mechanisms and maintaining simple overall structure while achieving effective contaminant removal
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 provides a maintainable, compact, and versatile suction apparatus that reduces maintenance frequency by allowing for efficient cleaning of fouled paths and efficient collection of dust and fumes, improving operational efficiency in welding and additive manufacturing.
Implementation Method 1
an ejector that has a drive opening, an intake opening, and an outlet
Data Source
AI summary
A suction apparatus is provided with: a first path connecting an inlet and a drive opening of an ejector; a second path connecting a suction/ejection opening and an intake opening of the ejector; and a third path connecting the inlet and the suction/ejection opening. When the second path is connected by a path switching unit, a gas or an aerosol is suctioned via the suction/ejection opening by means of the first path and the second path. When the third path is connected by the path switching unit, a compressed gas is ejected via the suction/ejection opening by means of the third path.