3D Printing Recirculating Air Handling System
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Solution Overview
Problem
Three-dimensional printing systems face inefficiencies in batch processing and post-processing due to the batch-processing nature of 3D printing, particularly in removing uncured residue and aerosols, which hinders their transition from prototyping to manufacturing.
Innovation Solution
A three-dimensional printing system incorporating a recirculating air handling system with a blower, residue trap, and continuous transport mechanism to efficiently remove uncured residue and aerosols, using heated air and a regenerative blower with temperature control, and a residue collection system.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If batch processing is used for 3D printing post-processing, then equipment complexity is reduced, but productivity is decreased
Solution Approach 1:
The system implements continuous air circulation through the recirculating air handling system, where air is continuously blown onto the article surface to remove residue, then continuously captured and filtered, maintaining an ongoing cleaning process that eliminates idle time between processing steps and maximizes throughput
Solution Approach 2:
The air handling system performs multiple functions simultaneously: it heats air for effective residue removal, circulates air continuously for efficient processing, captures aerosols and residue particles, and filters the air for reuse. This multi-functionality consolidates what would otherwise require separate equipment into a single integrated system
2Manufacturing precision
If heated air is used to remove uncured residue, then cleaning effectiveness is improved, but energy consumption increases
Solution Approach 1:
The system recovers and recirculates the heated air after it has contacted the article surface. The air, which still contains thermal energy after blowing off residue, is captured by the air handling system, filtered, and reheated to the required temperature for reuse, thereby recovering the thermal energy that would otherwise be wasted and reducing overall heating energy consumption
Solution Approach 2:
The system dynamically adjusts air temperature parameters based on processing requirements. The air is heated to optimal temperatures for residue removal effectiveness, and the temperature control ensures energy efficiency by maintaining only the necessary temperature threshold rather than excessive heating, balancing cleaning effectiveness with energy consumption
3Productivity
If recirculating air system is implemented, then productivity is improved, but device complexity increases
Solution Approach 1:
The system merges the heating function, air circulation function, aerosol capture function, and filtration function into a single integrated air handling system. This consolidation achieves continuous processing capability for improved productivity while avoiding the need for multiple separate equipment pieces, thereby limiting the increase in device complexity through functional integration
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
Enhances the efficiency of post-processing by effectively removing residue and aerosols, improving the throughput and accuracy of 3D printed articles, enabling the transition from prototyping to manufacturing.
Implementation Method 1
The blower outlet supplies pressurized air to the air inlet of the housing
Implementation Method 2
The air circulates around a loop from the blower outlet, to the air inlet of the housing, out of the housing outlet, and to the inlet of the blower
Implementation Method 3
a capture system for removing residue aerosol from the air
Data Source
AI summary
A three-dimensional printing system is for manufacturing and post-processing a three-dimensional article. The system includes a housing, a blower, and a residue trap. The housing is for surrounding the three-dimensional article during the post process and includes an air inlet and an air outlet. The blower includes an inlet and an outlet. The outlet supplies pressurized air to the air emitting nozzle. The residue trap is coupled between the housing air outlet and the inlet of the blower. The air circulates around a loop from the blower outlet, to the air inlet of the housing, out of the air outlet of the housing, and to the inlet of the blower.