20240009739. DEHUMIDIFY AND RECYCLE A GAS FROM A 3D PRINTER simplified abstract (HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.)

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DEHUMIDIFY AND RECYCLE A GAS FROM A 3D PRINTER

Organization Name

HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P.

Inventor(s)

Rhys Mansell of Sant Cugat del Valles (ES)

Mohammad Jowkar of Sant Cugat del Valles (ES)

Carlos Eduardo Caballero Diaz of Sant Cugat del Valles (ES)

DEHUMIDIFY AND RECYCLE A GAS FROM A 3D PRINTER - A simplified explanation of the abstract

This abstract first appeared for US patent application 20240009739 titled 'DEHUMIDIFY AND RECYCLE A GAS FROM A 3D PRINTER

Simplified Explanation

The abstract describes a 3D printing apparatus that is designed to dehumidify and recycle gas from a 3D printer. The apparatus includes a gas inlet to receive the gas flow from the printer, a heat exchanger to dehumidify the gas flow by transferring heat to a cold liquid stream, a gas outlet to output the dehumidified gas flow back to the printer, and a controller. The controller receives humidity and temperature measurements from a sensor downstream from the heat exchanger, compares them with target values, and controls a chiller valve to adjust the temperature of the gas flow to achieve a predetermined absolute humidity.

  • Gas inlet receives gas flow from a 3D printer containing evaporated solvents to be cleaned.
  • Heat exchanger cools the gas flow by transferring heat to a cold liquid stream from a chiller, causing the solvents to condensate.
  • Gas outlet outputs the dehumidified gas flow back to the 3D printer.
  • Controller receives humidity and temperature measurements from a sensor downstream from the heat exchanger.
  • Controller compares the measurements with target values and controls a chiller valve to adjust the temperature of the gas flow to achieve a predetermined absolute humidity.

Potential applications of this technology:

  • Improved print quality: By dehumidifying and recycling the gas flow, the apparatus can help reduce the presence of moisture and solvents in the printing process, resulting in better print quality.
  • Environmental sustainability: The recycling of gas and condensation of solvents can contribute to a more sustainable 3D printing process by reducing waste and minimizing the release of harmful substances into the environment.

Problems solved by this technology:

  • Moisture control: The apparatus effectively removes moisture from the gas flow, preventing issues such as warping, delamination, and poor adhesion in the printed objects.
  • Solvent management: By condensing and separating solvents from the gas flow, the apparatus helps to minimize solvent emissions and reduce the need for external ventilation systems.

Benefits of this technology:

  • Cost savings: The recycling of gas and condensation of solvents can lead to cost savings by reducing the consumption of solvents and minimizing the need for external ventilation equipment.
  • Improved printing process: By controlling the humidity and temperature of the gas flow, the apparatus can enhance the printing process, resulting in higher quality and more consistent prints.


Original Abstract Submitted

a 3d printing apparatus to dehumidify and recycle a gas from a 3d printer is disclosed herein. the apparatus comprises: a gas inlet to receive a gas flow from a 3d printer, the gas flow comprising gas with evaporated solvents to be cleaned; a heat exchanger to dehumidify the gas flow from the evaporated solvents, the heat exchanger to cool the gas flow by heat transfer to a cold liquid stream from a chiller to saturate and condensate the solvents from the gas flow; a gas outlet to output the dehumidified gas flow back to the 3d printer; and a controller. the controller is to receive a humidity and temperature measurements from a sensor located downstream from the heat exchanger; compare the humidity and temperature measurements with a target humidity and a target temperature respectively; and control a chiller valve from the chiller based on the comparison to adjust the temperature of the gas flow to set an absolute humidity of the gas flow to a predeterminable value.

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