Domestic dishwasher
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Solution Overview
Problem
Existing domestic dishwashers face challenges in reducing the installation space required for connecting flanges and achieving sufficient rigidity in the connecting areas, which can lead to structural issues and increased weight.
Innovation Solution
The design incorporates a groove-shaped receiving area with a base and a rear wall where the second connecting flange of the rear wall is bent away from the first connecting flange, creating a deformation area that increases rigidity and reduces the overall height of the connecting flanges, allowing for a triple sheet metal thickness and the use of teardrop-shaped recesses for additional support, along with a sealing device and fastening means for secure watertight sealing.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Strength
If the connecting flanges are designed with sufficient rigidity using conventional methods, then structural strength is improved, but the installation space and weight increase
Solution Approach 1:
The deformation area is inserted between the first connecting flange of the base and the second connecting flange of the rear wall, creating a nested triple-layer structure. This nesting arrangement achieves enhanced rigidity through multiple sheet metal layers while minimizing the overall installation space required for the connecting flanges.
Solution Approach 2:
The connecting flanges are arranged in the vertical dimension with the deformation area positioned between them, rather than extending horizontally. This vertical stacking in another dimension reduces the horizontal installation space while maintaining structural rigidity through the triple-layer configuration.
2Weight of moving object
If the connecting flanges are made thinner to reduce weight, then weight is reduced, but structural rigidity and strength decrease
Solution Approach 1:
The connecting flange assembly uses a composite structure combining three sheet metal layers (first connecting flange, deformation area, and second connecting flange) in a vertical stack. This composite arrangement provides enhanced rigidity and strength equivalent to thicker material while keeping individual components thin and lightweight.
Solution Approach 2:
The thin deformation area is nested between the two connecting flanges, creating a multi-layer sandwich structure. This nesting of thin layers achieves the rigidity of thick material without the weight penalty, as the distributed multi-layer structure provides structural strength while maintaining low weight.
3Ease of manufacture
If the deformation area is positioned towards the first connecting flange, then connection simplicity is improved, but installation space increases and base support components must be repositioned
Solution Approach 1:
Instead of positioning the deformation area towards the first connecting flange as would be intuitive, the invention positions it between the two flanges with the second connecting flange overlapping the first. This inverted arrangement reduces installation space and eliminates the need to reposition base support components while maintaining connection simplicity through the overlapping design.
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 reduces the installation space needed, enhances the structural rigidity and watertight sealing, and prevents damage to the base support by allowing elastic deformation, thereby improving the overall performance and durability of the dishwasher.
Implementation Method 1
The deformation area of the second connecting flange of the rear wall is bent in a direction away from the first connecting flange of the floor... allowing elastic deformation
Implementation Method 2
This results in a triple sheet metal thickness in the area of the connecting flanges. This increases the rigidity in the area of the connecting flanges.
Data Source
Figure 1
Figure 2
Figure 3~4
AI summary
The invention relates to a domestic dishwasher (1) with a washing container (2), which comprises a base (7), a washing container shell (12) connected to the base (7), and a back wall (9) connected to both the base (7) and the washing container shell (12), wherein the base (7) comprises a first connection flange (19) and the back wall (9) comprises a second connection flange (20) that rests against the first connection flange (19) at least in sections, wherein the second connection flange (20) has a deformation region (21) that projects beyond the first connection flange (19), and wherein the deformation region (21) is bent in a direction (R) oriented away from the first connection flange (19) in such a way that the deformation region (21) rests against the second connection flange (20).