Cylindrical Dynamic Braking Resistor With Lattice Cooling Passages
Find Innovative SolutionsGenerate Solutions
Solution Overview
Problem
Existing resistors are limited in their ability to dissipate heat, which can lead to reduced performance and reliability in applications such as braking systems and power-generating systems.
Innovation Solution
The development of an elongated cylindrical resistor body with nodes and elongated members that form openings for cooling fluid flow, allowing for enhanced heat dissipation through increased surface area and customized air flows.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If resistors are manufactured as planar or flat plates to increase surface area exposure, then heat dissipation capability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The resistor body is segmented into a three-dimensional lattice structure composed of interconnected struts or members, creating multiple internal passages and surfaces for heat dissipation. This segmentation increases the effective surface area while maintaining a compact overall form factor, resolving the contradiction between heat dissipation capability and device complexity.
Solution Approach 2:
The invention transitions from a two-dimensional planar plate structure to a three-dimensional lattice structure. This dimensional change allows the resistor to utilize internal volume for heat dissipation passages, significantly increasing the surface area exposed to cooling fluid without proportionally increasing the external footprint or manufacturing complexity.
2Temperature
If resistors are manufactured as planar or flat plates to increase surface area exposure, then heat dissipation capability is improved, but weight and space requirements increase
Solution Approach 1:
The lattice structure segments the resistor body into interconnected struts with internal passages, creating a lightweight framework that dissipates heat efficiently. This segmented approach reduces material usage compared to solid planar plates while maintaining or enhancing heat dissipation capability, thereby reducing weight.
Solution Approach 2:
The three-dimensional lattice structure functions as a porous material with internal passages allowing cooling fluid flow. This porous configuration increases the surface area-to-volume ratio, enabling effective heat dissipation with reduced material quantity and lower weight compared to dense planar structures.
3Temperature
If cooling fluid flows through openings in the resistor structure, then heat dissipation is improved, but manufacturing precision requirements increase
Solution Approach 1:
The invention changes the geometric parameters of the resistor structure by adopting a three-dimensional lattice configuration with standardized strut dimensions and connection nodes. This parameterization allows for controlled variations in passage size and distribution, enabling effective heat dissipation while accommodating reasonable manufacturing tolerances without requiring extreme precision.
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 effectively increases the capacity for heat dissipation, leading to improved reliability and extended lifespan of the resistors, while also reducing weight and space requirements.
Implementation Method 1
The body may receive electric current from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body
Implementation Method 2
The elongated members interconnect the nodes to form openings between the nodes and the elongated members for the flow therethrough of a cooling fluid
Data Source
AI summary
A resistor includes an elongated cylindrical body having nodes and elongated members. The elongated members interconnect the nodes to form openings between the nodes and the elongated members for the flow therethrough of a cooling fluid. The body is configured to receive electric current from a powered system and to conduct and provide electric resistance to the electric current to dissipate at least part of the electric current as heat from the body. The body may be coupled with at least one other resistor of the powered system in one or more of a parallel or series arrangement in an electric circuit.