Dishwasher Rack Coupling System for Multi-Position Liquid Supply

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Solution Overview

Problem

Current dishwashers lack sufficient adjustment options for the crockery basket, limiting the adaptability of the washing compartment to accommodate different sizes and shapes of items.

Innovation Solution

A dishwasher with a dish rack that can assume multiple height positions and tilting positions, featuring a coupling system with multiple openings for creating a liquid-conducting connection, allowing for increased adaptability without requiring additional openings, and a sealing element to ensure reliable liquor supply in various positions.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Adaptability or versatility

If the crockery basket is made height-adjustable with tilting positions, then the adaptability of the washing compartment increases, but the complexity of the coupling system increases

Engineering Contradiction:
Improveadaptability of washing compartmentVSAvoidcomplexity of coupling system
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The coupling system is designed with multiple openings that can serve different functions depending on the height position and tilting position of the crockery basket. The same coupling structure handles both vertical height adjustment and lateral tilting adjustment, making it a multi-functional system that increases adaptability without proportionally increasing complexity.

Inventive Principle:
Principle #6Universality (Multi-functionality)

Solution Approach 2:

The coupling system incorporates movable elements that can dynamically adjust to different positions. The coupling includes components that can move vertically and laterally to accommodate various basket positions, allowing the system to adapt to different configurations while maintaining a relatively simple overall structure.

Inventive Principle:
Principle #15Dynamics

2Adaptability or versatility

If multiple openings are provided in the coupling for different positions, then the number of adjustment options increases, but the structural complexity increases

Engineering Contradiction:
Improvenumber of adjustment optionsVSAvoidstructural complexity
Core Design Contradiction:
Adaptability or versatilityVSDevice complexity

Solution Approach 1:

The coupling system is divided into multiple segments or components, each with specific openings positioned at different locations. This segmentation allows each part to have a focused function while the entire system provides multiple adjustment options. The coupling is separated into a first coupling part and a second coupling part, each contributing to the overall adaptability.

Inventive Principle:
Principle #1Segmentation

Solution Approach 2:

The coupling system incorporates openings in multiple spatial dimensions - both vertically (for height adjustment) and laterally (for tilting adjustment). By utilizing another dimension (lateral positioning in addition to vertical positioning), the system achieves multiple adjustment options without simply stacking components vertically, which would increase complexity linearly.

Inventive Principle:
Principle #17Another dimension (Dimensionality change)

Data Source

PatentEP2273910B1Dishwashing machine
Publication Date: 2020.06.24 BSH HAUSGERATE GMBH
  • EP2273910B1 patent drawingFigure 1
  • EP2273910B1 patent drawingFigure 2~4

AI summary

The invention relates to a dishwashing machine, comprising at least one dishwasher rack that can assume at least two different height positions, a spraying device for applying washing liquor to items to be washed, the spraying device being associated with the dishwasher rack, a hydraulic system for supplying washing liquor to the spraying device and a coupling (2) with at least two openings (4, 6, 8) for providing a liquid-conducting connection (10) between the hydraulic system and the spraying device in at least two different height positions and at least two tilt positions. The invention is characterized in that one height position and at least two tilt positions are associated with at least one of the openings (4, 6, 8) for establishing the liquid-conducting connection (10).