Vaporization Tank Segmentation for Stable Gas Flow
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Solution Overview
Problem
Existing liquid material vaporization apparatuses for semiconductor processing face instability in gas flow due to sudden temperature changes of the liquid material, requiring larger tank capacities or preheating, which increases footprint and equipment needs.
Innovation Solution
A vaporization tank is divided into a charging compartment and a vaporization compartment by an inner partition wall, allowing the liquid material to overflow from the charging compartment, where it is heated, and then vaporized in the vaporization compartment, stabilizing the temperature and gas flow without additional preheating equipment.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Area of stationary object
If a small capacity vaporization tank is used, then the footprint of the apparatus is minimized, but the temperature of the liquid material suddenly decreases when charged from room temperature, rendering gas flow unstable
Solution Approach 1:
The vaporization tank is divided into two compartments by an inner partition wall: a charging compartment for receiving liquid material and a vaporization compartment for maintaining stable vaporization. This segmentation allows the charging compartment to handle temperature variations while the vaporization compartment maintains stable gas flow, resolving the contradiction between small footprint and gas flow stability.
2Reliability
If the capacity of the vaporization tank is increased to stabilize gas flow, then gas flow stability is improved, but the footprint of the apparatus increases
Solution Approach 1:
By dividing the tank into charging and vaporization compartments, the system achieves stable gas flow in a compact configuration. The vaporization compartment maintains stable temperature and pressure for consistent gas flow, while the charging compartment handles liquid material intake, eliminating the need for a large single-chamber tank.
3Reliability
If preheating equipment is added to heat the liquid material before charging, then gas flow stability is improved, but the device complexity and equipment requirements increase
Solution Approach 1:
The system performs preliminary heating action within the charging compartment before the liquid material enters the vaporization compartment. The heater positioned in the charging compartment preheats the liquid material, ensuring stable temperature and gas flow without requiring separate external preheating equipment, thus maintaining simplicity while improving reliability.
4Temperature
If a preheating section is added upstream of the vaporization apparatus, then the temperature of the liquid material is increased before charging, but the footprint of the apparatus increases
Solution Approach 1:
The preheating function is merged with the vaporization tank by positioning a heater inside the charging compartment. This integration eliminates the need for a separate preheating section upstream, increasing the liquid material temperature within the compact tank structure without expanding the overall apparatus footprint.
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 effectively stabilizes the temperature of the liquid material in the vaporization compartment, ensuring consistent gas flow and reducing the need for preheating, thus minimizing the apparatus's footprint and simplifying control mechanisms.
Implementation Method 1
a heater for heating and vaporizing the liquid material in the tank
Implementation Method 2
a liquid material charged in the charging compartment overflows over the upper edge of the inner partition wall toward the vaporization compartment
Data Source
AI summary
A liquid material vaporization apparatus for a semiconductor processing apparatus includes: a vaporization tank; an inner partition wall disposed in the tank for dividing the interior of the tank into a charging compartment and a vaporization compartment which are liquid-communicatable with each other over an upper edge of the inner partition wall. A liquid material charged in the charging compartment overflows over the upper edge of the inner partition wall toward the vaporization compartment to store and vaporize the liquid material in the vaporization compartment.