Oven Door Multi-Pane Cooling to Reduce Thermal Bridge Heat Loss
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Solution Overview
Problem
Baking appliance doors with viewing windows face challenges in insulation, as frame parts between panes act as thermal bridges, leading to heat loss and potentially dangerous temperatures, especially during high-temperature procedures.
Innovation Solution
A door design featuring a multi-pane structure with ventilation channels and a cooling element associated with the holding element, which extends into the ventilation channel, effectively dissipating heat and minimizing thermal bridges by using profiled sections with slits and thermally conductive materials.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If a multi-pane structure with frame parts is used to cool the door, then cooling effect is improved, but frame parts act as thermal bridges causing heat loss and dangerous temperatures
Solution Approach 1:
The door is divided into multiple panes (inner pane, outer pane, and intermediate pane) separated by ventilation channels. This segmentation breaks the thermal bridge that would otherwise exist through a solid frame structure, allowing air flow to cool the panes while minimizing heat transmission to the exterior.
Solution Approach 2:
A cooling element is introduced as an intermediary component between the inner pane and outer pane. This cooling element extends into the ventilation channel and actively removes heat from the air flow, preventing the frame structure from acting as a thermal bridge while maintaining effective cooling.
2Temperature
If ventilation channels are created between panes for cooling, then cooling effectiveness is improved, but device complexity increases
Solution Approach 1:
The holding element that supports the panes is merged with the cooling element into a single integrated component. This combination eliminates the need for separate ventilation channel structures, reducing overall device complexity while maintaining effective cooling through the ventilation channels.
Solution Approach 2:
The holding element serves multiple functions: it supports the panes structurally, defines the ventilation channels for cooling, and incorporates the cooling element for heat removal. This multi-functionality reduces the number of separate components needed, simplifying the overall door structure.
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 effective cooling of the door, reducing heat transmission and ensuring safe operation even at high temperatures, while maintaining energy efficiency and preventing external heat exposure.
Implementation Method 1
At least one cooling element is associated with the at least one holding element and extends into the at least one ventilation channel
Implementation Method 2
the arrangement of several panes creates spaces through which air can also flow
Data Source
AI summary
A baking appliance includes a heatable baking chamber and a door that closes the baking chamber. The door includes an inner pane facing the baking chamber when the door is closed and an outer pane facing outward when the door is closed. At least one holding element is configured to arrange the inner pane and outer pane so as to form at least one ventilation channel between the inner pane and outer pane. At least one cooling element is associated with the at least one holding element and extends into the at least one ventilation channel.