Multi-subsystem Gas Flow System for Additive Manufacturing
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Solution Overview
Problem
Conventional additive manufacturing machines have a single gas loop system that struggles to efficiently perform multiple functions such as electronics cooling, condensate evacuation, and component cleaning, as different gas flow properties are required for each function, leading to suboptimal performance and increased filtering needs.
Innovation Solution
The implementation of a multi-subsystem gas flow system with dedicated gas circulation loops for condensate evacuation, purge air, and electronics cooling, each using distinct gas flow properties optimized for their respective functions, ensuring efficient and effective operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single gas loop system is used for multiple functions, then device complexity is reduced, but gas flow properties cannot be optimized for each function leading to suboptimal performance
Solution Approach 1:
The patent divides the single gas loop system into multiple independent gas circulation loops, with each loop dedicated to a specific function (condensate evacuation, purge air supply, electronics cooling). This segmentation allows each gas circulation device to be optimized for its specific function, resolving the contradiction by sacrificing structural simplicity to achieve functional optimization.
2Reliability
If different gas flow properties are required for different functions, then function effectiveness is improved, but device complexity increases
Solution Approach 1:
The patent implements a multi-functional gas circulation system where each dedicated loop can be configured with specific flow rates, pressures, and gas types to serve multiple purposes. For example, the purge air loop can clean different components or the electronics cooling loop can handle different electronic modules, achieving universality while maintaining optimization for each function.
3Device complexity
If a single gas loop is used for condensate evacuation and component cleaning, then device complexity is reduced, but manufacturing precision and part quality may be compromised
Solution Approach 1:
The patent separates condensate evacuation and component cleaning into different gas circulation loops, allowing each to have optimized flow characteristics. The condensate evacuation loop can maintain high flow rates for efficient removal, while the purge air loop can provide controlled, low-turbulence flow for cleaning, thereby improving part quality without excessive complexity.
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 approach enhances the efficiency and effectiveness of additive manufacturing processes by allowing customized gas flow rates and pressures for each subsystem, improving part quality, reducing waste, and extending the life of machine components.
Implementation Method 1
a first gas circulation device operably coupled to the condensate loop for circulating a first gas through the build area
Implementation Method 2
a second gas circulation device operably coupled to the purge air loop for circulating a second gas over at least one sensitive component of the additive manufacturing machine
Data Source
AI summary
An additive manufacturing machine includes a plurality of subsystems, such as a condensate evacuation subsystem for removing byproducts of the additive manufacturing products near a powder bed, a closed loop subsystem for cleaning contaminants from sensitive machine components, and/or an electronics cooling subsystem for cooling an electronics compartment. Each subsystem may include a dedicated gas circulation loop that is operably coupled to a gas circulation device for urging a clean flow of gas to each of the subsystems to perform a particular function.