High-Frequency Power Supply Cooling Block for Plasma Spectrometer
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Solution Overview
Problem
Conventional high-frequency power supplies for ICP optical emission spectrometers are costly and large due to multiple transistors and capacitors, and suffer from inadequate cooling, leading to heat-related issues and potential short circuits from dew condensation when the plasma is turned off.
Innovation Solution
A high-frequency power supply with a self-oscillation system using a power MOSFET and compact ceramic capacitors, coupled with a cooling block that allows coolant flow only when the plasma is on, and a sealed housing to prevent dust and dew formation when the plasma is off.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional high-frequency power supply with multiple transistors and capacitors is used, then reliable operation is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines multiple transistors and capacitors into a single integrated power supply module, reducing device complexity while maintaining reliable operation. The modular design integrates high-frequency generation components into one unit, eliminating the need for separate transistor and capacitor assemblies.
Solution Approach 2:
The power supply module is designed to perform multiple functions within a single device structure, serving both as a high-frequency source and a controlled cooling system. The integrated design allows the same housing to contain both electrical components and thermal management features.
2Temperature
If continuous coolant flow is used for cooling, then heat dissipation is improved, but dew condensation and short circuits occur when plasma is off
Solution Approach 1:
The coolant flow is made dynamic rather than continuous, being controlled to flow only when the plasma is active and heat dissipation is required. This dynamic control prevents dew condensation and short circuits during idle periods while maintaining effective cooling during operation.
Solution Approach 2:
The cooling system incorporates feedback control based on plasma state, automatically adjusting coolant flow according to whether the plasma is on or off. This feedback mechanism ensures cooling is provided only when necessary, preventing both overheating during operation and condensation during idle periods.
3Device complexity
If cooling fan is used for heat dissipation, then simplicity of structure is maintained, but cooling efficiency becomes insufficient
Solution Approach 1:
The patent replaces the mechanical cooling fan system with a controlled coolant flow system that uses fluid dynamics rather than mechanical rotation. This substitution provides superior cooling efficiency while maintaining reasonable structural simplicity through the use of standard cooling channels and pumps.
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 configuration reduces system size and cost, prevents short circuits by controlling coolant flow and maintaining a dry environment, ensuring reliable operation of the high-frequency circuit components.
Implementation Method 1
a self-oscillation system using a power MOSFET and compact ceramic capacitors
Implementation Method 2
a coolant path for allowing a coolant to flow through is formed inside the cooling block
Implementation Method 3
When the jetted argon gas is ionized by the electrons that have been accelerated by the high-frequency electromagnetic field created by the high-frequency inductive coil 21
Implementation Method 4
When the jetted argon gas is ionized by the electrons that have been accelerated by the high-frequency electromagnetic field
Implementation Method 5
a sealed housing to prevent dust and dew formation when the plasma is off
Data Source
AI summary
In a high-frequency power supply for plasma having a housing and a high-frequency circuit substrate placed inside the housing, elements for supplying a high-frequency current to a high-frequency inductive coil are mounted on the high-frequency circuit substrate, a cooling block for cooling the high-frequency circuit substrate is provided, and a coolant path a for allowing a coolant to flow through is formed inside the cooling block so that the coolant is allowed to flow through the coolant path when a high-frequency current is supplied and the coolant is not allowed to flow through the coolant path when a high-frequency current is not supplied.