Flight Tube Temperature Control for Mass Spectrometer Power Efficiency
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Solution Overview
Problem
Time-of-flight mass spectrometers face issues with high running costs, safety risks, and performance variability due to temperature fluctuations and the need for constant heating, especially in varying ambient temperatures, leading to inefficient power usage and prolonged analysis startup times.
Innovation Solution
A time-of-flight mass spectrometer with a temperature control mechanism that adjusts the flight tube temperature based on ambient conditions using a sensor, allowing for reduced power consumption, improved safety, and consistent performance across a wide range of temperatures, achieved through automatic target temperature setting and reduced temperature gradients.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Measurement precision
If the temperature of the flight tube is controlled at a constant target temperature, then the measurement accuracy is improved, but the power consumption increases and running costs become high
Solution Approach 1:
The patent applies dynamics by making the target temperature adjustable rather than fixed. The control unit dynamically adjusts the target temperature based on ambient temperature conditions, allowing the system to adapt between maintaining constant temperature for accuracy and reducing temperature differential to save power, thus resolving the contradiction between measurement precision and power consumption
Solution Approach 2:
The patent changes the temperature parameter dynamically based on ambient conditions. By adjusting the target temperature parameter according to ambient temperature, the system can reduce the temperature differential during cold ambient conditions, thereby reducing power consumption while maintaining adequate measurement accuracy
2Adaptability or versatility
If a high output heater is used to apply to a wide range of ambient temperatures, then the adaptability is improved, but the safety deteriorates due to fire risk
Solution Approach 1:
The system dynamically adjusts the target temperature based on ambient temperature, allowing a single heater of moderate output to effectively cover a wide range of ambient temperatures. This eliminates the need for high output heaters while maintaining adaptability, thereby reducing fire risk
Solution Approach 2:
By changing the target temperature parameter according to ambient conditions, the system achieves wide adaptability without requiring excessive heating capacity. The control unit calculates appropriate target temperatures that prevent the need for high output heaters, thus improving safety
3Object-affected harmful factors
If a low output heater is used to avoid safety risks, then the safety is improved, but the device complexity increases due to air conditioning requirements
Solution Approach 1:
The patent extracts the temperature control function from the ambient environment and implements it internally through the control unit. By calculating and adjusting the target temperature based on ambient conditions, the system eliminates the need for external air conditioning infrastructure, reducing device complexity while maintaining safety with lower output heaters
Solution Approach 2:
The system performs self-service temperature management by using the control unit to calculate and adjust target temperatures based on ambient conditions. This internal self-regulation eliminates the need for external air conditioning systems, reducing complexity while maintaining safety
4Measurement precision
If the target temperature is set high to compensate for low ambient temperature, then the measurement accuracy is maintained, but the waiting time until analysis starts becomes long
Solution Approach 1:
The patent changes the target temperature parameter dynamically based on ambient conditions rather than using a fixed high target temperature. By calculating an optimized target temperature that considers the ambient temperature, the system reduces the temperature differential and heating time while maintaining adequate measurement accuracy, thus reducing waiting time
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 reduces running costs, enhances safety by minimizing fire risks, ensures consistent analysis startup times, and maintains device performance without requiring extensive air conditioning, while minimizing temperature gradients in the flight tube.
Implementation Method 1
when the temperature (ambient temperature) in the vicinity of the flight tube is changed, the flight tube thermally expands or contracts
Implementation Method 2
The ambient temperature sensor detects an ambient temperature outside the vacuum chamber
Data Source
AI summary
A flight tube 246 is hollow, and ions emitted from an ion emission unit are introduced into the flight tube 246. A reflectron 244 is provided in the flight tube 246, and is configured by coaxially arranging a plurality of annular electrodes 244A and 244B. A vacuum vessel 247A that becomes in a vacuum state during analysis is formed in the vacuum chamber 247, and the flight tube 246 is provided in the vacuum vessel 247A. A temperature control mechanism 248 controls a temperature of the flight tube 246. An ambient temperature sensor 250 detects an ambient temperature outside the vacuum chamber 247. A target temperature of the temperature control mechanism 248 is set on the basis of the ambient temperature detected by the ambient temperature sensor 250.