Rectangular Cross-Section Watt-Hour Meter Blade
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Solution Overview
Problem
Conventional watt-hour meter block adapter assemblies face limitations in amperage rating and heat distribution due to their C-channel shaped blades, which require high-force presses and additional stamping operations, limiting design flexibility and efficiency.
Innovation Solution
The proposed meter block adapter assembly features blades with a rectangular cross-section, providing a larger cross-sectional area and lower total surface area to cross-section area ratio, enhancing current flow and heat distribution, and is manufactured through extrusion and cutting without pressing, eliminating the need for costly and resource-intensive stamping processes.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If C-channel shaped blades are used, then manufacturing complexity increases due to high-force presses and additional stamping operations, but design flexibility and efficiency are limited
Solution Approach 1:
The patent changes the geometric parameters of the blade from a C-channel cross-section to a rectangular cross-section. This parameter change simplifies the manufacturing process by eliminating the need for complex stamping operations and high-force presses, while maintaining the structural integrity and electrical conductivity required for the blade's function in the watt-hour meter block adapter assembly.
2Power
If C-channel shaped blades are used, then amperage rating is limited, but heat distribution performance is reduced
Solution Approach 1:
The patent merges the structural and thermal functions into a single rectangular cross-section design. The solid rectangular shape provides both the mechanical strength needed for high amperage ratings and the optimal thermal pathways for heat distribution. By eliminating the hollow C-channel structure, the blade achieves improved heat dissipation while supporting higher current loads.
3Area of moving object
If rectangular cross-section blades are used, then cross-sectional area is increased, but total surface area increases
Solution Approach 1:
The patent optimizes the ratio between cross-sectional area and total surface area by adopting a rectangular cross-section. This geometric parameter change allows the blade to achieve a larger cross-sectional area for improved current flow and heat distribution, while the increased surface area is acceptable because it enhances heat dissipation to the surrounding environment, which is beneficial for thermal management in high-amperage applications.
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 design achieves a higher amperage rating with less material and improved heat transfer, maintaining temperature within desired limits, while reducing manufacturing costs and complexity.
Implementation Method 1
providing a larger cross-sectional area and lower total surface area to cross-section area ratio, enhancing current flow
Implementation Method 2
The rectangular cross-section of the blade internally transfers heat faster any from the ends than a C-channel shaped blade having an equal cross-section area due the reduced total surface area
Data Source
AI summary
A watt-hour meter block adapter assembly includes a housing. The watt-hour meter block adapter assembly includes a blade supported by the housing. The blade includes a blade end and a jaw end. The blade includes a middle portion that extends from the blade end to the jaw end. The middle portion and blade end are rectangular in cross-section. An area of the rectangular cross-sectional area of the middle portion is greater than an area of the rectangular cross-sectional area of the blade end.