French-Door Oven Thermal Break for Cooler Outer Panels
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Solution Overview
Problem
French door style oven appliances face challenges in limiting heat transfer between inner and outer surfaces, leading to potential overheating during high-temperature operations like cleaning cycles, which can cause injuries and affect performance.
Innovation Solution
The oven appliance features a thermal break between the inner and outer door panels, achieved by spacing them apart along at least one edge, along with insulation and flanges to hinder conductive heat transfer and heated air flow, and uses a cooling mechanism to prevent overheating.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the inner and outer door panels are connected closely for structural strength, then the door structure is stronger, but heat transfer between inner and outer surfaces increases causing overheating
Solution Approach 1:
The door panel is divided into inner and outer sections that are spaced apart from each other, creating a thermal break. This segmentation prevents direct thermal conduction between the inner surface (exposed to high temperatures) and the outer surface (exposed to users), thereby reducing heat transfer while maintaining structural integrity through separate support mechanisms.
Solution Approach 2:
A thermal break or insulating barrier is introduced between the inner and outer door panels. This intermediary element acts as a thermal resistor, blocking the direct heat conduction path while allowing the door to function as a complete assembly. The thermal break enables the door to withstand high internal temperatures without transferring excessive heat to the external surface.
2Reliability
If the gap between doors is reduced for sealing, then the gasket seal is improved, but heat transfer from heated air to outer surface increases
Solution Approach 1:
The thermal management approach moves from a two-dimensional planar barrier to a three-dimensional thermal break structure. By spacing the inner and outer panels apart in the lateral dimension, the patent creates a volumetric thermal barrier that interrupts heat conduction paths more effectively than a simple planar insulation layer, while still allowing for effective sealing at the gaps.
3Temperature
If thermal break is introduced to reduce heat transfer, then outer surface temperature is reduced, but door structure complexity increases
Solution Approach 1:
The door panel is divided into inner and outer sections that are spaced apart from each other, creating a thermal break. This segmentation prevents direct thermal conduction between the inner surface (exposed to high temperatures) and the outer surface (exposed to users), thereby reducing heat transfer while maintaining structural integrity through separate support mechanisms.
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 reduces the risk of outer surface overheating, enhancing user safety and maintaining performance by limiting heat transfer and controlling heat flow during high-temperature operations.
Implementation Method 1
The inner door panel is spaced apart from the outer door panel in the lateral direction along at least one edge of the door such that the inner and outer door panels define a thermal break along the at least one edge
Data Source
AI summary
An oven appliance is provided. The oven appliance includes a pair of doors. Each door of the pair of doors includes an outer door panel and an inner door panel. The outer and inner door panels are spaced apart from each other along at least one edge of the door such that the inner and outer door panels define a thermal break therebetween. The thermal break can assist with limiting or hindering heat transfer between the inner and outer door panels.