Gas Laser Oscillator Gas Replacement Measurement
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Solution Overview
Problem
Existing gas laser oscillators require expensive gas flowmeters to measure and control the laser gas replacement amount per unit time, leading to increased production and operational costs, as well as complex and labor-intensive regulation processes.
Innovation Solution
A method and system that utilize a gas pressure measuring device to determine the laser gas replacement amount by measuring pressure changes in the gas chamber at predetermined intervals, eliminating the need for a gas flowmeter, and incorporating a control device to automatically calculate and display the replacement amount.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If a gas flowmeter is used to measure the laser gas replacement amount, then measurement precision is improved, but device complexity and production cost increase
Solution Approach 1:
The patent extracts the measurement function from a dedicated gas flowmeter and relocates it to the existing gas pressure measuring device. By measuring pressure changes in the gas chamber before and after gas replacement, the system calculates the replacement amount using the ideal gas law, thereby eliminating the need for a separate gas flowmeter while maintaining measurement capability
Solution Approach 2:
The gas pressure measuring device is given a dual function: it continues to monitor gas chamber pressure during operation and additionally measures pressure changes to calculate gas replacement amount. This multi-functional approach eliminates the need for separate measurement devices, reducing system complexity and cost
2Measurement precision
If a gas flowmeter is installed for measuring laser gas replacement amount, then measurement capability is improved, but production cost increases
Solution Approach 1:
The patent replaces an expensive gas flowmeter with a measurement method that uses the existing gas pressure measuring device. By utilizing pressure differential measurements and applying the ideal gas law for calculation, the system achieves gas replacement measurement without requiring additional expensive instrumentation, thereby reducing production cost
3Device complexity
If manual valve regulation is used for laser gas replacement amount, then device complexity is reduced, but ease of operation deteriorates
Solution Approach 1:
The patent implements a feedback control system where the gas pressure measuring device continuously monitors pressure changes, the control device calculates the actual gas replacement amount, and compares it with the target value. Based on this feedback, the control device automatically adjusts the supply-side and exhaust-side valves to maintain the gas replacement amount at the desired level, eliminating manual regulation while keeping the system relatively simple
4Device complexity
If laser gas replacement amount is not controlled, then device complexity is reduced, but reliability deteriorates
Solution Approach 1:
The patent enables the system to self-regulate the gas replacement amount through automatic control. The control device uses pressure measurements to determine when gas replacement is needed and automatically adjusts the valves to achieve the correct replacement amount, maintaining laser power stability without requiring complex external control systems or manual intervention
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 approach reduces production and operational costs by eliminating the need for a gas flowmeter, simplifies the regulation process, and automates the measurement of laser gas replacement, ensuring stable operation and efficient gas management.
Implementation Method 1
a gas pressure measuring device for measuring pressure in the gas chamber
Implementation Method 2
determining the laser gas replacement amount per unit time during the laser oscillating operation based on the results of the first and second measurements
Data Source
AI summary
A gas laser oscillator includes a supply-side valve for regulating a laser gas supply to a gas chamber, an exhaust-side valve for regulating a laser gas exhaust from the gas chamber, a gas pressure measuring device for measuring a pressure in the gas chamber, and a control device functioning as a laser gas replacement measuring device. The control device makes a first measurement and a second measurement of the pressure in the gas chamber by a gas pressure measuring device at a predetermined time interval during the vacuuming or purging of the gas chamber, and determines the laser gas replacement amount per unit time during the laser oscillating operation, based on the results of the first and second measurements.