Plasma Shield Control Around Laser Beams to Block Oxygen Ingress
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Solution Overview
Problem
Laser operations pose safety risks due to the presence of the fire triangle elements (heat, fuel, and oxygen), leading to fires that can damage equipment and reduce laser effectiveness by scattering debris in the air.
Innovation Solution
A plasma shield is generated around the laser beam path using a cold plasma and a magnetic field to prevent oxygen ingress, forming a gas-impermeable barrier that inhibits fire formation and debris removal, controlled by a system including a processor and artificial intelligence for dynamic adjustment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If laser operations are performed in an open environment, then productivity and ease of operation are improved, but safety deteriorates due to fire risks from the fire triangle elements
Solution Approach 1:
The patent applies the inert atmosphere principle by introducing a plasma shield that creates a controlled environment around the laser beam path. This plasma barrier prevents oxygen (oxidizing agent) from reaching the workpiece and hot cuttings, effectively removing one element of the fire triangle while allowing laser operations to continue in an open environment without fire hazards
2Object-affected harmful factors
If a plasma shield is generated to prevent oxygen ingress, then safety is improved by eliminating fire risks, but device complexity increases due to additional plasma generation and magnetic field control systems
Solution Approach 1:
The patent merges the plasma generation system and magnetic field control system into an integrated safety mechanism. The plasma generator and electromagnets work together as a unified system that automatically creates and maintains the plasma shield around the laser beam path, reducing operational complexity despite the advanced technology involved
Solution Approach 2:
The plasma shield acts as an intermediary barrier between the laser operation zone and the surrounding atmospheric oxygen. This plasma layer mediates the interaction by allowing the laser beam to pass through while blocking oxygen ingress, thus protecting the work area without requiring direct contact or complex mechanical barriers
3Reliability
If the plasma shield shape is dynamically controlled using magnetic fields, then safety and laser effectiveness are improved by adapting to varying conditions, but energy consumption increases due to continuous magnetic field adjustment
Solution Approach 1:
The patent implements dynamics by enabling the plasma shield shape to be continuously adjusted through variable magnetic field control. The electromagnets can modify the plasma configuration in real-time to adapt to different laser parameters, workpiece geometries, and operational conditions, ensuring consistent safety and effectiveness throughout the laser operation process
Solution Approach 2:
The system utilizes parameter changes by varying the magnetic field strength and configuration to control plasma shield characteristics. By adjusting electromagnetic parameters, the system optimizes the plasma shield formation and maintenance energy requirements while ensuring reliable safety performance across different operating conditions
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 plasma shield effectively prevents fires by eliminating oxygen and debris from the laser interaction area, enhancing safety and maintaining the integrity of laser operations by ensuring a predictable and effective beam path.
Implementation Method 1
A plasma shield is generated around the laser beam path using a cold plasma
Implementation Method 2
The shape or location of the plasma shield may be controlled or altered using a magnetic field
Data Source
AI summary
This specification describes systems, methods, and architectures related to generating a plasma shield for laser operations. An example system for generating a plasma shield includes a laser head for directing a laser beam towards a target area on a workpiece. The path of the laser beam from the laser head to the target area on the workpiece is substantially surrounded by a plasma shield, which may form a gas-impermeable barrier. The plasma shield is configured to prevent the ingress of atmospheric or environmental gases, for example oxygen, into an area which would allow the gas to be in contact with the area of the workpiece being interacted with by a laser beam. The shape or location of the plasma shield may be controlled or altered using a magnetic field.