Domestic dishwasher having increased rigidity in a region of connection flanges of base and rear wall

Resolve Bottlenecks,
Find Innovative SolutionsGenerate Solutions

Solution Overview

Problem

Conventional household dishwashers face challenges in reducing installation space requirements for connection flanges while maintaining rigidity and preventing damage from impacts, often resulting in increased weight and potential cracking of the base support.

Innovation Solution

The design features a second connection flange with a deformation region that projects beyond the first connection flange, allowing for reduced installation space and increased rigidity through a triple sheet thickness arrangement, along with drop-shaped cut-outs and a floating support system to absorb forces and prevent damage.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Area of stationary object

If the deformation region is bent toward the first connection flange to reduce installation space, then the installation space is reduced, but the rigidity in the region of the connection flanges decreases

Engineering Contradiction:

Improveinstallation spaceVSAvoidrigidity

Core Design Contradiction:

Area of stationary objectVSStrength

Solution Approach 1:

Instead of bending the deformation region toward the first connection flange (conventional approach), the patent bends it in the opposite direction - away from the first connection flange and toward the second connection flange. This inversion creates a triple sheet thickness arrangement that increases rigidity while still reducing installation space requirements.

Inventive Principle:

Principle #13The other way round (Inversion)

Solution Approach 2:

The deformation region is nested between the first and second connection flanges, creating a layered structure. When bent away from the first connection flange, it rests against the second connection flange, forming a compact nested arrangement that reduces overall height while maintaining structural strength through the triple sheet configuration.

Inventive Principle:

Principle #7Nested doll (Nesting)

2Strength

If conventional connection flange designs are used to maintain rigidity, then rigidity is maintained, but the installation space and overall height increase

Engineering Contradiction:

ImproverigidityVSAvoidoverall height

Core Design Contradiction:

StrengthVSLength of stationary object

Solution Approach 1:

The patent transitions from a single-layer connection flange design to a multi-layer nested arrangement. By bending the deformation region away from the first connection flange and nesting it against the second connection flange, the design utilizes the third dimension (height) more efficiently, reducing overall height while creating a triple sheet thickness that enhances rigidity.

Inventive Principle:

Principle #17Another dimension (Dimensionality change)

3Strength

If the second connection flange projects beyond the first connection flange, then rigidity is increased through triple sheet thickness, but the device complexity increases

Engineering Contradiction:

ImproverigidityVSAvoidconnection flange structure

Core Design Contradiction:

StrengthVSDevice complexity

Solution Approach 1:

The deformation region is merged with the second connection flange, forming an integrated structure. The second connection flange is designed to include the deformation region as part of its structure, eliminating the need for separate components and simplifying the overall assembly process while maintaining the rigidity benefits of the triple sheet arrangement.

Inventive Principle:

Principle #5Merging (Combining)

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 reduces the overall height of the connection flanges, enhances rigidity, and prevents damage to the base support by distributing forces effectively, maintaining the position of the water stop apparatus and optimizing force transmission without increasing the dishwasher's weight.

Implementation Method 1

The deformation region is bent in a direction oriented away from the first connection flange in such a way that the deformation region rests against the second connection flange

Methodology Applied

Scientific EffectElastic deformation: Elasticity

Data Source

PatentUS11266290B2Domestic dishwasher having increased rigidity in a region of connection flanges of base and rear wall

Publication Date: 2022.03.08 BSH HAUSGERATE GMBH

AI summary

A household dishwasher includes a dishwasher cavity which includes a base having a first connection flange, a dishwasher cavity casing connected to the base, and a rear wall connected to both the base and the dishwasher cavity casing. The rear wall includes a second connection flange having at least one section resting against the first connection flange. The second connection flange has a deformation region which projects beyond the first connection flange and is bent in a direction oriented away from the first connection flange in such a way that the deformation region rests against the second connection flange.