Segmented Insulation Shielding for Power Supply Weight Reduction
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Solution Overview
Problem
Power supply units for electron beam sterilization devices face challenges in maintaining low weight and cost-effectiveness while providing optimal electric insulation to prevent corona and arc discharges, which are typically addressed by heavy or resource-intensive insulation techniques.
Innovation Solution
A power supply unit with a housing divided into areas based on voltage thresholds, where insulation shields are strategically placed to maintain minimum distances between zones exceeding a first voltage threshold, utilizing insulation materials with high dielectric strength and an insulation gas like nitrogen to prevent corona and arc discharges.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If heavy or resource-intensive insulation techniques are used to prevent corona and arcs, then electric insulation reliability is improved, but weight and material cost increase
Solution Approach 1:
The housing is divided into multiple areas based on voltage distribution zones. Insulation shields are selectively placed only in areas where the distance to high-voltage zones is below the minimum safe distance, rather than providing uniform insulation throughout the entire housing. This segmented approach maintains insulation reliability where needed while reducing overall weight and material usage.
Solution Approach 2:
Different parts of the housing receive different levels of insulation protection based on their specific electrical environment. Areas close to high-voltage zones receive insulation shields, while areas with sufficient natural distance do not. This local differentiation optimizes the balance between insulation reliability and weight reduction.
2Reliability
If heavy or resource-intensive insulation techniques are used to prevent corona and arcs, then electric insulation reliability is improved, but material cost increases
Solution Approach 1:
The housing is divided into multiple areas based on voltage distribution zones. Insulation shields are selectively placed only in areas where the distance to high-voltage zones is below the minimum safe distance, rather than providing uniform insulation throughout the entire housing. This segmented approach maintains insulation reliability where needed while reducing overall weight and material usage.
Solution Approach 2:
Different parts of the housing receive different levels of insulation protection based on their specific electrical environment. Areas close to high-voltage zones receive insulation shields, while areas with sufficient natural distance do not. This local differentiation optimizes the balance between insulation reliability and weight reduction.
3Reliability
If insulation shields are placed in all areas, then electric insulation is maximized, but device complexity increases
Solution Approach 1:
The housing is divided into multiple areas based on voltage distribution zones. Insulation shields are selectively placed only in areas where the distance to high-voltage zones is below the minimum safe distance, rather than providing uniform insulation throughout the entire housing. This segmented approach maintains insulation reliability where needed while reducing overall weight and material usage.
Solution Approach 2:
The insulation system is designed with adaptability to different voltage distribution configurations. The selective placement of insulation shields based on calculated minimum distances allows the system to dynamically adjust the insulation strategy to match the specific electrical layout, reducing unnecessary complexity.
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 effectively reduces weight and costs while ensuring robust electric insulation, preventing damage to the device and ensuring worker safety by minimizing corona and arc discharges, thus enhancing the operational reliability of electron beam sterilization devices.
Implementation Method 1
the electric insulation system comprises at least one insulation shield... those areas which distance to a zone of the electric system which voltage distribution exceeds a first voltage threshold is below a minimum distance comprise at least one insulation shield
Implementation Method 2
utilizing insulation materials with high dielectric strength and an insulation gas like nitrogen to prevent corona and arc discharges
Data Source
AI summary
Power supply unit, in particular for a sterilization device, comprising a housing, an electric system and an electric insulation system, wherein the electric insulation system comprises at least one insulation shield, wherein the electric system is located within the housing, and wherein the electric system has, during operation, zones that have different voltage distributions, wherein the housing comprises a plurality of areas, and wherein at least one area comprises the at least one insulation shield, wherein those areas which distance to a zone of the electric system which voltage distribution exceeds a first voltage threshold is below a minimum distance comprise at least one insulation shield.