Laundry Rinsing Arrangement With Detachable Siphon Partition

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Solution Overview

Problem

Existing washing machine designs face challenges in achieving a compact construction with effective ventilation and simplified production, while preventing unintentional wetting of laundry due to vibrations and pressure fluctuations, which often result in wetting of spun laundry.

Innovation Solution

A flushing arrangement with a detachable partition wall forming a siphon between the outlet connection and water intake trough, combined with a vapor barrier system in the inlet line, ensures efficient ventilation and condensation, and a dual overflow system to prevent liquid from escaping during vibrations.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Reliability

If a one-piece lower part with integrated siphon is produced via injection molding, then manufacturing precision and reliability are improved, but device complexity and production difficulty increase significantly

Engineering Contradiction:
Improvesiphon functionalityVSAvoidproduction complexity
Core Design Contradiction:
ReliabilityVSEase of manufacture

Solution Approach 1:

The siphon structure is divided into separate components: a partition wall element that is attached to the lower part rather than being integrated through complex injection molding. This segmentation simplifies manufacturing while maintaining the siphon's functional integrity and reliability.

Inventive Principle:
Principle #1Segmentation

2Device complexity

If the water-receiving trough is designed with a single overflow outlet, then device complexity is reduced, but reliability decreases due to unintentional wetting during vibrations and pressure fluctuations

Engineering Contradiction:
Improveoutlet structureVSAvoidprevention of laundry wetting
Core Design Contradiction:
Device complexityVSReliability

Solution Approach 1:

The first overflow outlet is positioned at a higher level to prevent liquid from escaping during vibrations and pressure fluctuations before they can cause harmful effects. This preliminary protective measure ensures that even under dynamic conditions, laundry remains dry while maintaining a relatively simple outlet structure.

Inventive Principle:
Principle #9Preliminary anti-action

3Productivity

If a compact flushing arrangement design is implemented, then productivity and space utilization are improved, but manufacturing precision requirements increase due to tight tolerances

Engineering Contradiction:
Improvespace utilizationVSAvoidassembly tolerance
Core Design Contradiction:
ProductivityVSManufacturing precision

Solution Approach 1:

By dividing the lower part into separable components (main body and partition wall element), the design achieves compact dimensions while allowing independent manufacturing and assembly of parts with standard tolerances, avoiding the need for tight tolerances that would result from integrating all features into a single complex component.

Inventive Principle:
Principle #1Segmentation

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 simplifies production, reduces production costs, and effectively prevents laundry from getting wetted unintentionally, ensuring a compact and efficient washing machine operation.

Implementation Method 1

a siphon is formed between the outlet connection piece and the water intake trough

Methodology Applied
Scientific EffectSiphon: Syphon

Implementation Method 2

a vapor barrier device being formed in a curved line section in the inlet line

Methodology Applied
Scientific EffectVapor barrier:

Data Source

PatentEP2794977B1Rinsing arrangement for a domestic appliance for the care of laundry items, and domestic appliance for the care of laundry items
Publication Date: 2016.03.16 BSH HAUSGERATE GMBH
  • EP2794977B1 patent drawingFigure 1
  • EP2794977B1 patent drawingFigure 2~4
  • EP2794977B1 patent drawingFigure 5~7

AI summary

The invention relates to a rinsing arrangement (8) for a domestic appliance (1) for the care of laundry items, comprising a rinsing dish (8a) that has an upper portion (8b) and a lower portion (8c) connectable to thereto, wherein a water supply device (8d) having a water receiving tray is formed in the lower portion (8c), and an outlet connector (8e, 8f) is formed on the lower portion (8c), which opens into the water receiving tray, wherein a dividing wall (31) that is separate from the lower portion (8c) and can be attached to the lower portion (8c) is formed, and in the arranged state of the dividing wall (31), a siphon (8n) is formed between the outlet connector (8e, 8f) and a water receiving space (8j) formed in the lower portion (8c). The invention further relates to a domestic appliance (1) having a rinsing arrangement (8).