Raw Material Tank Heating Shutdown for Temperature Deviation Detection
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Solution Overview
Problem
Existing raw material tank monitoring systems fail to effectively detect temperature deviations and abnormal conditions in the tank heating unit, leading to potential sublimation issues and inefficient raw material gas supply in film forming processes.
Innovation Solution
A monitoring apparatus that includes a temperature determination unit to assess if the tank temperature has reached a stable range and deviates from it, and a setting unit that sets the heating unit temperature to 0° C after a predetermined timeout, detecting abnormalities and preventing further heating when deviations occur.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If the temperature of the raw material tank is continuously monitored and controlled, then the stability of raw material gas supply is improved, but the complexity of the monitoring system increases
Solution Approach 1:
The patent implements a feedback mechanism where the temperature determination unit continuously monitors the tank temperature and compares it against the stable range. When temperature deviation is detected, the system automatically triggers the setting unit to reset the target temperature to 0°C, creating a closed-loop control system that maintains temperature stability without requiring complex manual intervention
Solution Approach 2:
The monitoring system performs self-diagnosis and self-correction by automatically detecting temperature deviations and resetting the heating control parameters. The timeout unit tracks the duration of temperature issues, and the setting unit autonomously adjusts the target temperature without external input, enabling the system to service itself and maintain stable operation
2Reliability
If the timeout detection function is added to detect heating unit abnormalities, then the reliability of temperature control is improved, but the time required for abnormality detection increases
Solution Approach 1:
The system performs preliminary actions by continuously tracking the temperature status and pre-calculating timeout conditions before actual abnormalities occur. The timeout unit maintains a running count of temperature deviation duration, so when an abnormality occurs, the detection is immediate rather than requiring post-event analysis, thus improving reliability without significant time loss
Solution Approach 2:
The monitoring system operates continuously with the temperature determination unit and timeout unit functioning without interruption. The timeout counter accumulates time data continuously, ensuring that abnormality detection is an ongoing process rather than a periodic check, which maintains high reliability while minimizing detection delay through constant surveillance
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 solution enables timely detection of tank heating unit abnormalities, ensuring stable raw material gas supply and preventing sublimation issues, thereby maintaining process efficiency and preventing equipment damage.
Implementation Method 1
the inside of a raw material tank, which stores a solid raw material, is heated to sublime the solid raw material and to form a raw material gas
Data Source
AI summary
A monitoring apparatus for monitoring a raw material tank monitors the temperature of the raw material tank when the temperature of the raw material tank storing a solid or liquid raw material is raised to a set temperature by a heating unit. The monitoring apparatus includes: a temperature determination unit configured to determine whether the temperature has reached a stable range including the set temperature, and determine whether the temperature has deviated from the stable range; and a setting unit configured to set the set temperature of the heating unit to 0° C. when a predetermined timeout time has elapsed from a time point at which the temperature determination unit determined that the temperature deviated from the stable range.