Microwave Oven Door Choke System Design
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Solution Overview
Problem
Existing oven doors for microwave and multifunctional ovens with microwave heating functions require complex structures and numerous fixing elements, leading to increased complexity and costs.
Innovation Solution
The oven door design features a door cover attached to the outer glass panel with door columns on the inner side, incorporating a wave choke system between the door cover and glass panel, and a central glass panel for microwave shielding, reducing the number of fixing elements and simplifying production.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Stability of the object's composition
If traditional oven door components are attached with multiple fixing elements, then the structural stability is improved, but the device complexity increases
Solution Approach 1:
The patent combines multiple components (door cover, door columns, inner glass panel, and choke system) into a single integrated assembly that attaches to the outer glass panel as one unit. This merging reduces the number of separate fixing elements needed while maintaining structural stability through the unified design of the door assembly.
Solution Approach 2:
The door cover serves multiple functions simultaneously: it provides structural support, houses the choke system for microwave shielding, supports the inner glass panel, and attaches to the door columns. This multi-functionality reduces the need for separate components and fixing elements, thereby reducing device complexity while maintaining stability.
2Reliability
If multiple components are used in the oven door, then the functional performance is improved, but the manufacturing cost increases
Solution Approach 1:
By merging the choke system, door cover, and support structures into an integrated assembly, the patent reduces the total number of parts that need to be manufactured, stored, and assembled. This lowers manufacturing costs while maintaining all necessary functions through the combined design.
Solution Approach 2:
The patent segments the oven door into distinct functional modules (outer glass panel, door columns, door cover assembly with integrated choke system, inner glass panel) that can be manufactured separately and then assembled. This modular segmentation allows for specialized manufacturing of each module while reducing overall complexity and cost.
3Object-affected harmful factors
If the door choke system is arranged between the door cover and outer glass panel, then the microwave shielding is improved, but the structural complexity increases
Solution Approach 1:
The choke system is nested within the door cover assembly, with the door grid integrated into the door cover structure. This nesting arrangement provides effective microwave shielding while avoiding the need for separate, complex shielding structures, thereby reducing overall structural complexity.
Solution Approach 2:
The choke system is merged with the door cover and support structures, creating an integrated assembly where the shielding function is combined with structural support functions. This reduces the number of separate components needed for both shielding and support, lowering structural complexity.
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 results in a compact, low-complexity oven door structure with reduced fixing elements, lower production costs, and effective microwave shielding while maintaining transparency and safety interlock functionality.
Implementation Method 1
the door choke system includes at least one metal sheet with a circumferential channel for a wave trap and at least one further metal sheet with a plurality of lamellae along said circumferential channel for the wave trap
Implementation Method 2
the door columns are glued by an adhesive at the inner side of the outer glass panel
Data Source
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AI summary
The present invention relates to an oven door (10) for a microwave oven or a multifunctional oven with microwave heating function. The oven door (10) comprises an outer glass panel (12). The oven door (10) comprises at least two door columns (26) directly attached or attachable at an inner side of the outer glass panel (12). The oven door (10) comprises a door cover (16) arranged or arrangeable at an inner side of the outer glass panel (12) and attached or attachable at the door columns (26). The oven door (10) comprises a door choke system (20) arranged or arrangeable between the door cover (16) and the outer glass panel (12). The oven door (10) comprises an inner glass panel (18) arranged or arrangeable between the door cover (16) and the door choke system (20).