3D Printing Gas Flow Shielding Against Component Deposits
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Solution Overview
Problem
In additive production of three-dimensional objects, deposits form on functional components due to fluid flows laden with contaminants, which can negatively affect the functionality of these components.
Innovation Solution
A device with a flow device that generates a second fluid flow with fewer or no contaminants, which flows between the first fluid flow and functional components, preventing or reducing deposits by providing a protective shielding effect.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-generated harmful factors
If a first fluid flow is used to remove contaminants from the process chamber, then contaminant removal efficiency is improved, but deposits form on functional components reducing their functionality
Solution Approach 1:
A second fluid flow is introduced as an intermediary between the first fluid flow and the functional components. This second fluid flow has fewer or no contaminants and flows directly along the surfaces of functional components, acting as a protective barrier that prevents contaminant deposits while allowing the first fluid flow to continue its contaminant removal function
Solution Approach 2:
The fluid flow system is segmented into two distinct flows: a first fluid flow for bulk contaminant removal from the process chamber, and a second fluid flow for localized protection of functional components. This segmentation allows each flow to be optimized for its specific function without compromising the other
2Productivity
If a fluid flow laden with contaminants flows along functional components, then contaminant removal from process chamber is achieved, but flow cross-section of flow-conducting components is reduced
Solution Approach 1:
The second fluid flow serves as a mediator that protects the flow cross-section of functional components from deposit accumulation, maintaining their original dimensions and flow properties while the first fluid flow continues to remove contaminants at high rate
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 second fluid flow effectively shields functional components from contaminant deposits, maintaining the functionality and flow properties of the device by minimizing the adherence of contaminants.
Implementation Method 1
the flow device (11) is designed to form a second fluid flow (FS2), which flows between the first fluid flow (FS1) and the at least one functional component (12, 15), directly along the surface of the at least one functional component (12, 15)
Data Source
AI summary
The invention relates to a device (1) for the additive production of three-dimensional objects (2) by successive, layered, selective exposure and accompanying successive, layered, selective solidification of construction material layers of a construction material (3) that can be solidified by means of an energy beam (4), comprising a flow device (11), which is designed to form a first fluid flow (FS1) that flows, particularly in a circuit-like manner, along at least one functional component of the device (1), wherein the first fluid flow (FS1) is laden with contaminants, particularly particulate contaminants, which are process-created, wherein the flow device (11) is designed to form a second fluid flow (FS2), wherein the second fluid flow (FS2) flows between the first fluid flow (FS1) and the at least one functional component of the device (1), directly along the surface of the at least one functional component of the device (1).