Metal 3D Printer Powder Storage Using Air Purge Gas Purification

The patent introduces an oxygen/moisture removal device as an intermediary component that processes atmospheric air to generate a purge gas with reduced oxygen and moisture content. This mediator device enables the system to achieve effective oxygen and moisture removal without requiring direct connection to inert gas supply infrastructure, thereby resolving the contradiction between removal effectiveness and installation flexibility.

The system generates its own purified purge gas by removing oxygen and moisture from atmospheric air using the oxygen/moisture removal device, rather than relying on external inert gas supplies. This self-service approach allows the storage device to maintain powder material in a protected atmosphere independently, eliminating the need for specialized installation locations with inert gas infrastructure.

The oxygen/moisture removal device serves as an intermediary that simplifies the overall system by replacing complex inert gas supply equipment. Instead of requiring external inert gas tanks, regulators, and supply infrastructure, the system uses a compact device that processes atmospheric air on-site, reducing both device complexity and installation requirements while maintaining reliable storage environment control.

The patent replaces the mechanical inert gas supply system (tanks, regulators, piping) with an oxygen/moisture removal device that uses chemical or physical processes to generate the required atmosphere from atmospheric air. This substitution reduces mechanical complexity while achieving the same functional outcome of maintaining a controlled storage environment.