Additive Processing Chamber Isolation for Powder Explosion Prevention
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing processing systems that perform additive processing, such as those using Laser Metal Deposition, face safety challenges due to the risk of explosions from the contact between powdery build materials and ignition sources.
Innovation Solution
The processing system incorporates a support apparatus, a processing apparatus, a driving power source, a driving power transmission member, a partition member with a through hole for the power transmission, and a seal member to prevent contact between the build materials and the ignition source, ensuring safety by isolating the ignition source from the processing area.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If the driving power source is disposed inside the processing chamber, then the device complexity is reduced, but the safety is compromised due to the risk of explosion from contact between powdery materials and ignition sources
Solution Approach 1:
The system is divided into separate zones: the processing chamber containing powdery materials and the driving power source located outside the chamber. The partition member creates a physical segmentation that isolates the ignition source from the combustible powdery materials, eliminating the explosion risk while maintaining functional connectivity through the sealed through-hole.
Solution Approach 2:
The partition member with a sealed through-hole acts as an intermediary structure that allows the driving power transmission member to pass through while maintaining isolation between the processing chamber and the driving power source. The seal member serves as a mediator that prevents gas or material leakage through the penetration point.
2Object-affected harmful factors
If the driving power source is disposed outside the processing chamber, then the safety is improved by isolating the ignition source, but the device complexity increases due to the need for partition members and seal members
Solution Approach 1:
The system is divided into separate zones: the processing chamber containing powdery materials and the driving power source located outside the chamber. The partition member creates a physical segmentation that isolates the ignition source from the combustible powdery materials, eliminating the explosion risk while maintaining functional connectivity through the sealed through-hole.
Solution Approach 2:
The partition member serves multiple functions: it isolates the driving power source from the processing chamber, provides structural support, and contains the sealed through-hole for power transmission. The seal member simultaneously seals the through-hole and maintains the integrity of the partition, reducing the need for additional components.
3Object-affected harmful factors
If a partition member with a through hole is introduced to separate the driving power source, then the safety is improved, but the manufacturing precision is challenged in sealing the penetration point
Solution Approach 1:
The seal member is implemented as a flexible sealing element (such as an O-ring or gasket) that can deform to accommodate slight variations in the through-hole dimensions and alignment. This flexible sealing approach compensates for manufacturing tolerances and ensures reliable sealing without requiring extremely high precision in the partition member's through-hole fabrication.
Solution Approach 2:
The sealing solution accommodates manufacturing variations by designing the seal member with appropriate dimensional parameters (such as cross-sectional diameter and installation groove dimensions) that provide a sealing interface capable of compensating for typical machining tolerances. The seal member's material properties (such as elasticity and hardness) are selected to ensure effective sealing under operational conditions.
Data Source
AI summary
A processing system is provided with: a support apparatus that supports an object; a processing apparatus that performs an additive processing on the object by supplying powdery materials to the object; a driving power source that generates driving power; a driving power transmission member that transmits the driving power to at least one of the support apparatus and the processing apparatus; a partition member that is disposed between the driving power source and at least a part of the processing apparatus and that has a formed through hole which the driving power transmission penetrates; and a seal member that seals a gap between the driving power transmission member and the partition member.