Modular Oven Door Profiles for Easier Assembly and Lower Heat Transfer
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Solution Overview
Problem
Existing oven doors with adhesive profiles require high effort and precision in manufacturing, leading to high temperature zones on the front pane due to heat transfer, making them costly and difficult to assemble.
Innovation Solution
A modular design for the household appliance door featuring vertically aligned door profiles with U-profile-like fastening elements on the rear side, allowing for simpler and more accurate manufacturing, reduced heat transfer, and flexible component positioning, using sheet metal parts that can be easily glued or snapped into place.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If adhesive profiles are used to attach door components to the front pane, then the door structure can be assembled, but the manufacturing process requires high precision and effort, and heat transfer to the front pane increases
Solution Approach 1:
The door structure is divided into separate modular components: the front pane, door profiles, and fastening elements are distinct parts that can be manufactured independently with standard tolerances and assembled together, eliminating the need for high-precision adhesive bonding of integrated profiles
Solution Approach 2:
Fastening elements act as intermediary components between the front pane and door profiles, providing a mechanical connection that is more tolerant to manufacturing variations than direct adhesive bonding, while also reducing heat transfer through the front pane
2Ease of manufacture
If adhesive profiles are used to attach door components, then the door can be assembled, but the temperature of the inner pane is transferred to the front pane leading to high temperature zones
Solution Approach 1:
The fastening elements serve as thermal barriers between the inner pane and front pane, interrupting the direct thermal path that would otherwise conduct heat to the front pane surface, thus reducing temperature zones while maintaining structural assembly
3Ease of manufacture
If door components are manufactured with complex geometry to achieve proper fit, then the door can be assembled, but manufacturing accuracy decreases and production becomes more difficult
Solution Approach 1:
Complex door structures are segmented into standardized components with simple geometries that can be manufactured with high accuracy using conventional processes, then assembled through modular connection systems rather than requiring complex monolithic shapes
Solution Approach 2:
The design transitions from continuous complex geometries to discrete standardized parameters and dimensions, allowing components to be manufactured with conventional tolerances while maintaining proper fit and function through the modular assembly system
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 modular design enables cost-effective and easy assembly of household appliance doors with reduced heat transfer to the front pane, improving manufacturing accuracy and allowing for variable component configurations without additional mechanical effort, suitable for different door heights and types.
Implementation Method 1
heat transport to the front cover, in particular the front pane, can be reduced due to the fastening elements, which are shorter in comparison to the door profiles
Data Source
Figure 1
Figure 2~3
AI summary
The household appliance door (1) has a flat front cover (2), the front cover (2) having a vertically aligned door profile (10) on its rear side (3) on the left and right, on the rear side (3) of the front cover (2 ) A set of an upper fastening element and a lower fastening element (4, 5l; 4r, 5r) is attached on the left and right-hand side, with a door profile each being attached to the left-hand set (4l, 5l) and to the right-hand set (4r, 5r). (10) is attached.