Rotatable Intake Manifold for Additive Manufacturing Smoke Removal

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Solution Overview

Problem

Conventional smoke and soot removal systems in additive manufacturing are inadequate as they often fail to effectively remove smoke generated during the laser-based powder bed fusion process, leading to build quality issues due to their distance from the source of smoke generation.

Innovation Solution

An intake manifold with a body defining a flow channel, an inlet for gas and particle intake from the build area, and a rotatable mount system to connect with the uptake manifold, allowing for efficient smoke and soot removal from multiple sides of the build area.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Device complexity

If an intake pipe is disposed several inches away from the build area, then the system structure is simpler, but the smoke removal effectiveness deteriorates

Engineering Contradiction:
Improveintake pipe configurationVSAvoidsmoke removal effectiveness
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The intake system is segmented into multiple inlet arms distributed around the build area perimeter, with each arm containing inlet openings. This segmentation allows the intake manifold to be positioned close to the build area while maintaining structural simplicity through modular repetition of inlet units.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The intake manifold extends in multiple dimensions around the build area perimeter rather than being a single point source. The inlet arms radiate outward from the manifold body, creating a distributed three-dimensional intake structure that improves smoke capture effectiveness without increasing linear distance.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

2Reliability

If the intake manifold is positioned close to the build area, then the smoke removal effectiveness is improved, but the device complexity increases

Engineering Contradiction:
Improvesmoke removal effectivenessVSAvoidintake manifold structure
Core Design Contradiction:
ReliabilityVSDevice complexity

Solution Approach 1:

The intake manifold serves multiple functions: it distributes intake air to multiple inlet arms, provides structural support for the rotatable mount, and creates a distributed intake network around the build area. This multi-functionality reduces the need for separate components, thereby reducing overall system complexity despite close positioning.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The intake manifold incorporates a rotatable mount that allows dynamic repositioning relative to the build area. This dynamic capability enables the manifold to adapt to different operational conditions and maintain optimal smoke removal effectiveness without requiring complex fixed positioning mechanisms.

Inventive Principle:
Principle #15Dynamics

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

The solution significantly improves smoke removal, enhancing build quality and part reliability by ensuring effective evacuation of gases and particulates from the build area, preventing particulate clouds and improving the inerting atmosphere.

Implementation Method 1

a body defining a flow channel therein. The body includes an inlet end defining an inlet configured to intake gas and/or particles from a build area

Methodology Applied
Scientific EffectGas flow through flow channel:

Implementation Method 2

at least one mount extending from the outlet end of the body that is configured to rotatably mount the body to the uptake manifold

Methodology Applied
Scientific EffectRotational motion on bearings:

Data Source

PatentUS11192353B2Smoke and soot removal systems for additive manufacturing
Publication Date: 2021.12.07 COLLINS ENGINE NOZZLES INC
  • US11192353B2 patent drawing
  • US11192353B2 patent drawing
  • US11192353B2 patent drawing

AI summary

An intake manifold for an additive manufacturing system includes a body defining a flow channel therein. The body includes an inlet end defining an inlet configured to intake gas and/or particles from a build area of the additive manufacturing system, and an outlet end defining an outlet that is fluidly connected to the inlet through the flow channel. The outlet is configured to be in fluid communication with an uptake manifold of the additive manufacturing system. The intake manifold also includes at least one mount extending from the outlet end of the body that is configured to rotatably mount the body to the uptake manifold.