Compact Drain Outlet With Siphon Channel

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Solution Overview

Problem

Conventional drains for showers and bathtubs have limited drainage capacity due to small dimensions, leading to water accumulation and inefficient drainage, especially in compact installations like shower trays.

Innovation Solution

The drain design features a siphon channel delimited by the outer side wall and accumulation wall, with an enlarged outlet channel between the siphon and inflow channels, allowing for increased cross-sectional flow and enhanced drainage capacity, along with a removable insert and connecting piece for improved functionality and ease of cleaning.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Volume of moving object

If the drain is designed with compact dimensions for shower trays, then the installation space requirement is reduced, but the drainage capacity is limited

Engineering Contradiction:
Improvedrain volumeVSAvoiddrainage capacity
Core Design Contradiction:
Volume of moving objectVSProductivity

Solution Approach 1:

The siphon channel is arranged along the outer side wall of the housing in a longitudinal direction, utilizing the extended side wall area to create a larger cross-sectional flow path. This dimensional reconfiguration allows the compact drain to achieve sufficient drainage capacity by distributing the flow path along the length of the housing rather than requiring a larger radial cross-section.

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

Solution Approach 2:

The outlet channel is nested between the siphon channel and the inflow channel, with the accumulation wall positioned between them. This nested arrangement optimizes the internal space utilization, allowing multiple functional channels to coexist within the compact housing volume while maintaining adequate flow cross-sections for high drainage capacity.

Inventive Principle:
Principle #7Nested doll (Nesting)

2Area of moving object

If the siphon channel is arranged along the outer side wall, then the cross section is enlarged, but the housing complexity increases

Engineering Contradiction:
Improvesiphon channel cross sectionVSAvoidhousing structure complexity
Core Design Contradiction:
Area of moving objectVSDevice complexity

Solution Approach 1:

The housing internal volume is segmented into distinct functional channels by partition walls: the siphon channel along the outer side wall, the outlet channel nested between, and the inflow channel. This segmentation creates well-defined flow paths with adequate cross-sections while maintaining a relatively simple overall housing structure that can be manufactured as a single piece or modular components.

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 achieves high drainage capacity in compact dimensions, preventing water accumulation in shower trays and facilitating easy maintenance, while accommodating smaller installation spaces with a low profile suitable for various sanitary applications.

Implementation Method 1

a siphon channel (7) and an outlet channel (8) are formed in the housing (1)

Methodology Applied
Scientific EffectSiphoning: Syphon

Data Source

PatentEP2157247B1Drain outlet
Publication Date: 2012.11.28 FRANZ KALDEWEI GMBH & CO KG
  • EP2157247B1 patent drawingFigure 1
  • EP2157247B1 patent drawingFigure 2
  • EP2157247B1 patent drawingFigure 3

AI summary

The downpipe has an inflow channel (3) arranged at an upper inlet opening (2), and an outlet opening (5) arranged in an outer sidewall (4) of a housing (1). An accumulation wall (6) is arranged in the housing, in such a manner that a siphon channel (7) and a discharge channel (8) are formed within the housing. The channel (7) is attached to the channel (3), and the channel (8) flows into the opening (5). The channel (7) is limited by the sidewall and the wall (6), and the channel (8) is limited by the wall (6). The channel (8) is arranged between the channel (7) and the channel (3).