Insulating Frame for Load Testing Device Cooling Air Leakage
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Solution Overview
Problem
Conventional load testing devices experience cooling air leakage due to gaps between insulators in the cooling and resistance units.
Innovation Solution
A load testing device with an insulating frame that covers the side surface of the cooling air flow path between the cooling and resistance units, formed in a pleated shape to enhance insulation, and composed of multiple members for ease of assembly and reduced weight, with an air filter and spacers to prevent impurities and dust ingress.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple insulators are provided between the cooling unit and the resistance unit, then insulation is provided, but cooling air leaks from between the insulators
Solution Approach 1:
The patent combines multiple insulators into a single integrated insulating frame structure. This frame includes a body portion and side surface portions that collectively provide both insulation and cooling air guidance functions, eliminating the gaps between separate insulators while maintaining effective insulation between the cooling unit and resistance unit.
2Reliability
If the insulating frame is configured integrally, then insulation performance is enhanced, but manufacturing complexity increases
Solution Approach 1:
The insulating frame is divided into a body portion and multiple side surface portions that can be manufactured separately and then assembled together. This segmentation allows each component to be produced using standard manufacturing processes with simpler tooling, while the final assembled structure provides the required insulation performance.
3Strength
If the insulating frame is made solid without hollow portions, then structural strength is improved, but weight increases
Solution Approach 1:
The side surface portions of the insulating frame include hollow portions that are positioned within the overall frame structure. These hollow sections reduce material usage and weight while the remaining structural elements maintain the necessary mechanical strength for supporting the resistance unit and withstanding operational forces.
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
Prevents cooling air leakage and enhances insulation, ensuring efficient cooling while protecting the device from dust and impurities, allowing for easy mobility in a mobile rack configuration.
Implementation Method 1
The insulating frame covers a side surface of a flow path of cooling air from the cooling unit to the resistance unit between the cooling unit and the resistance unit
Implementation Method 2
a cooling unit having a cooling fan
Implementation Method 3
By forming in a pleated shape on the surface of the outer wall and the inner wall of the side portion constituting the insulating frame, it is possible to elongate the insulating distance to enhance the insulating property
Implementation Method 4
an air filter including a pleated filter medium is provided at an intake port of the cooling unit. The air filter can prevent impurities from being contained in the air introduced into the cooling fan
Data Source
AI summary
A load testing device or the like having a structure in which cooling air does not leak, is provided. A load testing device includes: a resistance unit having a resistor and a resistor holding frame holding the resistor; a cooling unit having a cooling fan; and an insulating frame disposed between the resistance unit and the cooling unit. The insulating frame is coupled with the resistance unit. The insulating frame is coupled with the cooling unit. The insulating frame covers a side surface of a flow path of cooling air from the cooling unit to the resistance unit between the cooling unit and the resistance unit.