Power Supply Grounding Shield for Mass Spectrometer Stability
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
The stability of the power supply device in time-of-flight mass spectrometers is inadequate, leading to fluctuations in ion flight time and inaccurate mass spectrum creation due to low voltage stability.
Innovation Solution
A power supply device with a conductive casing and mold resin configuration, including a conductive grounding member to prevent discharge and ensure stability, along with temperature control and heat dissipation features to maintain consistent operation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a power supply device is used in a time-of-flight mass spectrometer, then voltage can be supplied to the flight tube, but stability of operation is insufficient leading to flight time changes
Solution Approach 1:
A conductive grounding member is introduced as an intermediary between the mold resin and the circuit portion. This grounding member acts as a shield that prevents discharge from reaching the circuit, thereby improving operational stability and preventing mass spectrum accuracy degradation
2Object-affected harmful factors
If mold resin is used to enclose the circuit portion, then insulation is provided, but air gaps may form between the resin and casing reducing effectiveness
Solution Approach 1:
The conductive grounding member serves as an intermediary shield positioned between the mold resin and the circuit portion. Even when air gaps form in the mold resin, the grounding member maintains continuous protection by shielding the circuit from discharge, ensuring both discharge protection and insulator integrity
3Object-affected harmful factors
If a conductive grounding member is added to shield the circuit, then discharge protection is improved, but device complexity increases
Solution Approach 1:
The conductive grounding member is merged with the mold resin structure, where the grounding member is embedded within or integrated into the resin casing. This combining approach provides discharge protection while minimizing the increase in device complexity through structural integration
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
The solution enhances the stability of the power supply device, preventing small discharges and ensuring accurate mass spectrometry by maintaining consistent voltage supply to the flight tube, thereby improving the accuracy of mass spectrum creation.
Implementation Method 1
a conductive grounding member arranged in the casing to shield the resin injector from the circuit portion
Implementation Method 2
a mold resin that fills the casing to enclose the circuit portion
Data Source
AI summary
A power supply device includes a power supply circuit, a casing, a mold resin and a grounding member. The casing is conductive. At least part of a circuit portion of the power supply circuit is stored in the casing. A resin injector is formed in the casing. A mold resin is injected from the resin injector to fill the casing and enclose the circuit portion. The grounding member is conductive. The grounding member is arranged in the casing to shield the resin injector from the circuit portion while being in contact with the mold resin.