Plasma Torch Material Feeding Device for Uniform Dispersion

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Solution Overview

Problem

Existing material feeding systems for plasma processing face challenges in achieving uniform dispersion of feedstock around the periphery of plasma torches, leading to inefficient energy utilization and variable processing outcomes, as they often result in high local material concentration and non-uniform temperature profiles within the plasma.

Innovation Solution

The development of a material feeding device with a conical or flared nozzle design that allows for adjustable orientation and positioning relative to the plasma torch, enabling uniform dispersion of material across the entire periphery and length of the plasma, utilizing gravity and airflow to distribute feedstock and prevent agglomeration, thereby optimizing energy utilization and reducing material concentration.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Manufacturing precision

If material is fed into the plasma using conventional feeding systems, then material processing is achieved, but uniform dispersion of feedstock around the periphery of plasma torches is not achieved, leading to high local material concentration and non-uniform temperature profiles

Engineering Contradiction:

Improveuniform dispersion of materialVSAvoidlocal material concentration

Core Design Contradiction:

Manufacturing precisionVSQuantity of substance

Solution Approach 1:

The material feeding device is divided into multiple nozzles arranged around the periphery of the plasma torch, with each nozzle feeding material into a different angular position. This segmentation allows uniform distribution of material concentration around the plasma periphery, preventing localized accumulation and achieving consistent temperature profiles during processing.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

Each nozzle is specifically positioned and oriented to deliver material to a particular location around the plasma periphery. The local feeding strategy ensures that material is introduced at optimal points where plasma temperature and velocity are appropriate, creating uniform local conditions that result in overall uniform dispersion and processing quality.

Inventive Principle:

Principle #3Local quality

2Use of energy by moving object

If material feeding device is positioned to achieve uniform dispersion around periphery, then energy utilization is optimized, but device complexity increases due to adjustable orientation and positioning requirements

Engineering Contradiction:

Improveenergy utilization efficiencyVSAvoidadjustable orientation mechanism

Core Design Contradiction:

Use of energy by moving objectVSDevice complexity

Solution Approach 1:

The material feeding device incorporates adjustable orientation and positioning capabilities that allow the nozzles to be dynamically configured for optimal alignment with the plasma periphery. This dynamic adjustability enables the system to adapt to different plasma conditions and maintain uniform material dispersion, maximizing energy utilization efficiency while providing the necessary flexibility through controlled movement rather than fixed complex mechanisms.

Inventive Principle:

Principle #15Dynamics

3Productivity

If material is fed at high concentration to increase throughput, then productivity increases, but non-uniform temperature profiles and variable processing outcomes result

Engineering Contradiction:

Improvematerial processing throughputVSAvoidprocessing consistency

Core Design Contradiction:

ProductivityVSManufacturing precision

Solution Approach 1:

By dividing the material feed into multiple nozzles distributed around the plasma periphery, the system can process higher total material throughput while maintaining uniform local concentrations at each nozzle. This segmentation prevents the formation of high-concentration zones that would cause non-uniform temperature profiles, thereby achieving both increased productivity and consistent processing outcomes.

Inventive Principle:

Principle #1Segmentation

Solution Approach 2:

The multiple nozzles operate simultaneously and continuously to feed material around the entire plasma periphery, ensuring uninterrupted and uniform material processing. This continuous distributed feeding maintains consistent temperature profiles and processing conditions throughout, enabling high throughput without sacrificing precision or uniformity.

Inventive Principle:

Principle #20Continuity of useful action

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

This solution ensures consistent and efficient material processing by maintaining uniform temperature and velocity profiles for the majority of particles, increasing yield while reducing costs and avoiding additional processing steps to meet precise specifications.

Implementation Method 1

the material is fed into the plasma by gravity

Methodology Applied

Scientific EffectGravity: Gravitation

Implementation Method 2

microwave plasma reaching about 6,000 K and the rest reaching about 10,000 K

Methodology Applied

Scientific EffectElectromagnetic heating: Dielectric Heating

Data Source

PatentUS11731195B2Method and apparatus for feeding material into a plasma

Publication Date: 2023.08.22 6K INC

AI summary

An apparatus for providing material feedstock into a plasma of a plasma torch includes a material feeding device having an input end and an output end. The output end of the material feeding device extends at least partially around the periphery of a plasma generated near the output end of the plasma torch. The material feeding device is oriented at an angle with respect to a central axis of the plasma torch.