Door assembly for a dishwasher
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Solution Overview
Problem
Conventional automated dishwashers with windows face challenges in minimizing fluid leakage from the treating chamber to other parts of the dishwasher or exterior, which affects the integrity and functionality of the door assembly.
Innovation Solution
The door assembly incorporates a window assembly supported by a frame on the interior door panel, with a seal and trim bezels to prevent fluid leakage, and uses a vacuum-insulated window design to reduce sound transmission and enhance sealing, ensuring a fluid-tight and sound-attenuated interface between the window and door panels.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of operation
If a window assembly is added to the door panel to allow viewing of the treating chamber, then user convenience and monitoring capability are improved, but fluid leakage risk and door assembly complexity increase
Solution Approach 1:
The window assembly is nested within a support frame that is integrated into the door panel structure. The seal is nested within a groove in the support frame, creating multiple nested levels of containment that prevent fluid leakage while maintaining the viewing function.
Solution Approach 2:
A seal acts as an intermediary element between the window assembly and the support frame, creating a fluid-tight barrier. The seal is received within a groove in the support frame, mediating the connection between the transparent panel and the door structure while preventing fluid penetration.
2Reliability
If a window assembly with seal and trim bezels is used to prevent fluid leakage, then sealing reliability is improved, but device complexity and manufacturing difficulty increase
Solution Approach 1:
The support frame, seal groove, and mounting structure are merged into a single integrated component. The trim bezel is also integrated with the support frame, combining multiple functions (structural support, sealing containment, and aesthetic finish) into unified elements that reduce overall assembly complexity.
Solution Approach 2:
The support frame serves multiple functions simultaneously: it provides structural support for the window assembly, contains the seal groove for fluid-tight sealing, and integrates the trim bezel for aesthetic finishing. This multi-functionality reduces the number of separate components needed.
3Object-affected harmful factors
If vacuum-insulated window design is implemented to reduce sound transmission, then noise reduction is improved, but manufacturing complexity and cost increase
Solution Approach 1:
The window assembly uses a composite structure with a transparent panel combined with vacuum insulation layers. This composite design provides sound attenuation and thermal insulation properties while maintaining visual transparency, achieving multiple performance goals through material composition rather than separate components.
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 configuration effectively minimizes fluid leakage and reduces sound transmission, maintaining the dishwasher's operational integrity and user experience by providing a clear view of the treating chamber while preventing moisture and noise issues.
Implementation Method 1
uses a vacuum-insulated window design to reduce sound transmission
Implementation Method 2
with a seal and trim bezels to prevent fluid leakage
Data Source
AI summary
A dishwasher includes a treating chamber for receiving dishes for treatment according to a cycle of operation and a door assembly selectively moveable to close an access opening to the treating chamber, the door assembly having an interior door panel, an exterior door panel, a window assembly and a window assembly support frame provided on the interior door panel to support the window assembly.