Mixer Valve Control for Flexible Hot-Cold Inlet Configuration
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Solution Overview
Problem
Digital shower and tap systems are complex to install correctly due to the need for precise coupling of hot and cold water inlets, leading to potential incorrect operation and diagnostic challenges.
Innovation Solution
A control system with a mixer valve and controller that allows flexible inlet configuration for hot and cold water, using temperature sensors and user input to determine the supply coupling setting, enabling easy installation and adjustment without reconnection of pipework.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If the mixer valve unit requires precise coupling of hot and cold water supplies to correct inlets, then the temperature control function is improved, but the installation complexity and time required increase
Solution Approach 1:
The system automatically detects which inlet receives hot or cold water through temperature sensors and autonomously configures the control parameters, eliminating the need for manual configuration during installation. The mixer valve unit self-adjusts to correct operation without requiring the installer to precisely match supplies to inlets.
Solution Approach 2:
The system changes its operational parameters based on detected temperature conditions. By monitoring the temperature at each inlet, the controller adapts its control strategy to match the actual supply configuration, allowing the device to function correctly regardless of how the water supplies are connected.
2Reliability
If the mixer valve unit requires precise coupling of hot and cold water supplies to correct inlets, then the temperature control function is improved, but the time required for installation increases
Solution Approach 1:
The automatic detection and configuration system performs the setup work autonomously after installation, eliminating the time-consuming manual configuration process. The installer simply connects the water supplies to any inlets, and the system handles the rest through automated temperature-based detection and parameter adjustment.
Solution Approach 2:
The system performs preliminary automatic configuration actions immediately after installation without requiring the installer to perform complex setup procedures. The temperature sensors automatically detect the supply configuration and the controller pre-adjusts the operational parameters before the user begins normal operation.
3Ease of manufacture
If traditional non-digital systems are used, then the installation process is simpler, but the functionality and user experience are reduced
Solution Approach 1:
The digital mixer valve unit provides multiple functions including automated temperature control, supply configuration detection, and adaptive operation within a single device. This multi-functionality maintains ease of installation while significantly enhancing the overall functionality and user experience compared to traditional systems.
Solution Approach 2:
The automated detection and configuration capabilities allow the digital system to install and setup itself without requiring complex manual procedures, thereby maintaining installation simplicity while enabling advanced digital functionality and improved user experience.
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
Facilitates quick and correct installation of ablutionary devices by allowing flexible inlet configuration, reducing installation time and eliminating the need for reconnection of water supplies, thus simplifying the setup process and improving user experience.
Implementation Method 1
A temperature sensor can be used in the output stream to create a feedback loop
Data Source
AI summary
A control system for one or more ablutionary devices includes a mixer valve having a first inlet and a second inlet configured to receive a supply of hot and cold water, and an outlet configured to output cold water, hot water or a mixture thereof as an output stream for suppling water to the one or more ablutionary devices downstream of the mixer valve; and a controller in communication with the mixer valve. The controller is configured to obtain a supply coupling setting that indicates which of the first and second inlets is to receive, or is receiving, hot water during operation of the control system and which of the first and second inlets is to receive, or is receiving, cold water during operation of the control system; and control the mixer valve according to one or more target output water properties and the supply coupling setting.