Adaptive Sanitary Flush Control for Liquid Consumption

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Solution Overview

Problem

Sanitary facilities in vehicles, such as rail vehicles, face challenges in minimizing flushing liquid consumption to reduce weight and tank size while ensuring reliable operation and preventing incrustation and blockages, with existing methods having fixed flushing volumes that do not adapt to usage patterns.

Innovation Solution

A method that dynamically controls fluid consumption based on past usage, triggering adaptive flushing to prevent blockages and optimize liquid exchange, including automatic special flushes and adjusting flushing water amounts according to usage patterns and available liquid levels, ensuring sufficient flushing liquid for operational periods.

Engineering Contradictions & Design Principles

VSEngineering Contradiction Analysis

1Weight of stationary object

If flushing liquid consumption is reduced to minimum per flushing operation, then weight and tank size are minimized, but incrustations and blockages may form in pipes and sanitary components

Engineering Contradiction:
Improveweight of sanitary facilityVSAvoidrisk of incrustation and blockage
Core Design Contradiction:
Weight of stationary objectVSReliability

Solution Approach 1:

The system dynamically adapts the flushing volume based on detected usage patterns and time intervals. Instead of a fixed minimal flush volume, the control device increases or decreases the flushing liquid amount depending on whether the sanitary component has been used recently, making the system responsive to actual conditions rather than static

Inventive Principle:
Principle #15Dynamics

Solution Approach 2:

The control device monitors usage data from sanitary components and uses this feedback to adjust future flushing operations. By detecting when components have not been used for predetermined time intervals, the system receives feedback about potential incrustation risks and responds by triggering special flushes with increased liquid volume

Inventive Principle:
Principle #23Feedback

2Ease of operation

If fixed flushing volume is used per flushing process, then system operation is simple, but consumption does not adapt to usage patterns and incrustation risk increases

Engineering Contradiction:
Improvesimplicity of flushing controlVSAvoidprevention of incrustation
Core Design Contradiction:
Ease of operationVSReliability

Solution Approach 1:

The system automatically monitors its own usage patterns and triggers special flushes without external intervention. The control device detects when sanitary components have not been used for predetermined intervals and autonomously initiates flushing operations, making the system self-regulating rather than requiring manual control adjustments

Inventive Principle:
Principle #25Self-service

Solution Approach 2:

The flushing volume transitions from a static fixed value to a dynamic variable that automatically adjusts based on detected usage patterns and time intervals, allowing the system to adapt its behavior to actual operational conditions

Inventive Principle:
Principle #15Dynamics

3Volume of stationary object

If flushing liquid consumption is minimized, then tank size is reduced, but sufficient liquid may not be available for desired operating time

Engineering Contradiction:
Improvetank sizeVSAvoidoperating time with sufficient liquid
Core Design Contradiction:
Volume of stationary objectVSDuration of action of moving object

Solution Approach 1:

The system performs preliminary monitoring of usage patterns to predict when incrustation risks will occur, triggering special flushes in advance before blockages form. By detecting time intervals between uses and proactively initiating flushes, the system prevents problems rather than reacting to them, ensuring continuous reliable operation

Inventive Principle:
Principle #10Preliminary action

Solution Approach 2:

The control device continuously monitors usage data and provides feedback about consumption patterns, using this information to adjust future flushing operations and optimize liquid distribution over the operating period

Inventive Principle:
Principle #23Feedback

Data Source

PatentEP3408460B1Sanitary apparatus and method therefor
Publication Date: 2020.09.16 SIEMENS MOBILITY GMBH
  • EP3408460B1 patent drawingFigure 1
  • EP3408460B1 patent drawingFigure 2
  • EP3408460B1 patent drawingFigure 3

AI summary

The invention relates inter alia to a method for operating a sanitary device (20), in which a flushing liquid, in particular water, is guided through a conduit system of the sanitary device (20). According to the invention, it is provided that the liquid consumption of at least one sanitary component (50) of the sanitary device (20) is controlled as a function of or at least also as a function of the liquid consumption in the past.