Laser Processing Fire Suppression via Sensor-Triggered Suppressant
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Solution Overview
Problem
Conventional laser material processing systems are inadequate in suppressing uncontrolled or self-sustained combustion, often requiring manual intervention with fire extinguishers that can leave residue and pose risks due to exposure to harmful fumes, and do not include continuous active fume extraction.
Innovation Solution
A laser material processing system equipped with sensors for detecting self-sustained combustion and a pressurized suppressant supply system that automatically dispenses a non-toxic, residue-free suppressant into the processing chamber to smother fires without the need for manual intervention, featuring redundant tanks for continuous operation and active air management to prevent re-ignition.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If manual intervention with fire extinguishers is used to suppress combustion, then fires can be extinguished, but residue is left and operator exposure to harmful fumes occurs
Solution Approach 1:
The system automatically detects combustion through sensors and triggers suppressant discharge without requiring manual operator intervention. The control system autonomously monitors combustion indicators and activates the suppressant delivery mechanism, eliminating the need for operators to physically approach and manually extinguish fires.
Solution Approach 2:
A pressurized suppressant system serves as an intermediary between the combustion event and the fire suppression function. The suppressant is delivered through a controlled delivery mechanism that targets the combustion source directly, replacing manual fire extinguisher application and eliminating residue and fume exposure risks to operators.
2Reliability
If conventional fire suppression systems are used in laser material processing, then fires can be suppressed, but the systems are designed for cutting machinery where metal is processed and coolant ignites, not for combustible materials
Solution Approach 1:
The fire suppression system is designed with universal applicability to handle various material types including combustible materials used in laser material processing. The suppressant selection and delivery system can adapt to different combustion scenarios whether involving metal, combustible materials, or coolant, making the system versatile across different processing applications.
Solution Approach 2:
The system adjusts suppression parameters based on the detected combustion characteristics. Different suppressants or delivery rates can be selected based on the type of material being processed and the nature of the combustion event, allowing optimization of suppression effectiveness for each specific application scenario.
3Ease of operation
If automatic suppressant discharge is implemented, then manual intervention is eliminated and operator safety is improved, but system complexity increases with sensors and control mechanisms
Solution Approach 1:
Manual mechanical fire suppression operations are replaced with an automated control system that uses sensors to detect combustion and electronically triggers suppressant discharge. This substitution eliminates the need for manual mechanical intervention while providing more reliable and consistent suppression response.
Solution Approach 2:
The system incorporates sensors that continuously monitor for combustion indicators and provide feedback to the control system. When combustion is detected, the control system automatically activates the suppressant delivery mechanism, creating a closed-loop feedback system that responds dynamically to fire conditions without requiring manual assessment.
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 system effectively suppresses self-sustained combustion without leaving residue, reducing downtime and operator risk by automatically managing air flow and suppressant delivery, ensuring safer and more efficient processing.
Implementation Method 1
a pressurized suppressant supply system configured to automatically sense the presence of self-sustained combustion and dispense a non-toxic, residue-free suppressant into the processing chamber to smother fires
Data Source
AI summary
Embodiments of laser material processing systems with fire suppression are disclosed herein. A laser material processing system configured in accordance with one embodiment includes a laser material processing region, at least one sensor disposed in the laser material processing region, and at least one suppressant delivery port positioned in or adjacent to the laser material processing region. The sensor is configured to detect the presence of self-sustained combustion in the laser material processing region, and a suppressant delivery port is configured to deliver suppressant to suppress the self-sustained combustion when at least one of the sensors detects self-sustained combustion.