Microwave Heater Multi-Hole Reinforcement Against Thermal Sagging
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Solution Overview
Problem
Microwave ovens face challenges in preventing deformation of multi-hole parts used for heat transfer in heaters, which can lead to sagging and damage due to thermal stress.
Innovation Solution
Incorporating a reinforcing part with a closed curve shape that protrudes from the multi-hole part, dividing it into regions to distribute heat evenly and prevent microwave concentration, thereby reducing thermal deformation.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a multi-hole part is used for heat transfer from the heater, then heat transfer efficiency is improved, but the multi-hole part deforms and sags due to thermal stress
Solution Approach 1:
The multi-hole part is segmented into multiple regions by the reinforcing part, which divides the continuous structure into separate zones. This segmentation allows each region to independently handle thermal stress without causing overall deformation, while maintaining effective heat transfer pathways through the holes.
Solution Approach 2:
The reinforcing part is strategically positioned at specific locations within the multi-hole part where thermal stress concentration occurs. This local reinforcement provides targeted structural support exactly where needed, preventing deformation in critical areas while maintaining heat transfer efficiency in other regions.
2Volume of moving object
If the multi-hole part is made thinner to reduce size, then device compactness is improved, but the part becomes more susceptible to deformation under thermal stress
Solution Approach 1:
The reinforcing part extends in the vertical dimension (protruding upward or downward from the imaginary plane of the multi-hole part), adding structural strength without increasing the horizontal footprint. This dimensional approach allows the part to remain compact while gaining enhanced resistance to thermal deformation.
Solution Approach 2:
The multi-hole part combines the base material with the reinforcing part to create a composite structure. The reinforcing part acts as a structural enhancement layer that provides thermal and mechanical stability, allowing the overall assembly to be more resistant to deformation while maintaining a compact form factor.
3Power
If high-output heating sources like halogen lamps are used, then heating efficiency is improved, but thermal stress increases causing damage to the multi-hole part
Solution Approach 1:
The reinforcing part is pre-installed in the multi-hole part before operation, providing structural cushioning and support against the thermal stress that will be generated by high-output heating sources. This preventive measure allows the system to handle high power heating without causing damage to the multi-hole part.
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 damage and sagging of the multi-hole parts, ensuring efficient heat transfer and maintaining the structural integrity of the microwave oven even with high-output heating sources like halogen lamps.
Implementation Method 1
a reinforcing part protruding upward or downward in a manner where a portion of the mild-hole part has no end, from an imaginary plane where the multi-hole part is disposed, so as to reinforce the multi-hole part
Implementation Method 2
a multi-hole part at the surface of the cavity, the multi-hole part transferring heat of the heater to the cooking chamber
Data Source
AI summary
A microwave oven is provided. A reinforcing part is provided to a multi-hole part for transferring the heat of a heater to a cooking chamber. This prevents deformation of the multi-hole part due to the heat of the heater.