Underfloor Heating Diverter/Blending Valve
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Solution Overview
Problem
Existing underfloor heating systems are complex and costly due to the need for large, complex control systems that regulate water temperature and flow, especially in single-zone applications, where a simplified solution is required to reduce component costs and simplify installation.
Innovation Solution
A heating control system featuring a thermostatic mixing valve with a mechanical design, including a first and second inlet for liquids at different temperatures, a thermostatic element to control the supply temperature, and an actuator to switch between temperature thresholds, allowing for efficient mixing and circulation of water within the heating circuit.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If traditional water manifolds with integrated TRV heads and thermal actuators are used to control water temperature and flow, then temperature regulation is achieved, but device complexity and cost increase
Solution Approach 1:
The patent combines the temperature control function and flow control function into a single thermostatic mixing valve assembly. The diverter valve integrates both the mixing function (blending hot and cold water) and the flow diversion function (directing flow to heating circuits) in one compact unit, eliminating the need for separate water manifolds with integrated TRV heads and thermal actuators.
Solution Approach 2:
The thermostatic mixing valve serves multiple functions: it regulates water temperature by mixing hot and cold water, diverts flow to different heating circuits, and provides temperature control for multiple zones. This multi-functional design replaces several separate components with a single universal device.
2Temperature
If traditional water manifolds with integrated TRV heads are used, then temperature control is achieved, but installation complexity and cost increase
Solution Approach 1:
The patent merges the temperature control mechanism and flow diversion mechanism into a single integrated thermostatic mixing valve assembly, reducing the number of installation steps and components required. The unified design simplifies both manufacturing and installation processes compared to assembling separate manifolds, TRV heads, and actuators.
3Adaptability or versatility
If a single-zone underfloor heating application is implemented with traditional control systems, then heating control is achieved, but component cost increases
Solution Approach 1:
The patent extracts the essential control functions (temperature regulation and flow diversion) from complex traditional manifolds and implements them in a simplified thermostatic mixing valve assembly. This extraction of core functions eliminates unnecessary components, reducing overall system cost while maintaining effectiveness for single-zone applications.
Solution Approach 2:
The patent employs a simpler, more cost-effective thermostatic mixing valve design that replaces expensive traditional manifold assemblies. The simplified construction using basic thermostatic elements and diverter mechanisms provides the required functionality at a lower component cost.
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
The system simplifies the control of underfloor heating systems by reducing component costs and complexity, enabling efficient temperature regulation and flow management, making it suitable for single-zone applications and reducing installation and maintenance costs.
Implementation Method 1
a thermostatic element arranged to control the flow of liquid from the first inlet to the outlet to limit the supply temperature to a desired temperature threshold
Implementation Method 2
the thermostatic mixing valve mixes flow from the first and second inlets to until the temperature of the outlet flow reaches the desired temperature threshold
Implementation Method 3
The actuator is configured to operate the temperature threshold control to switch the temperature threshold between a first temperature threshold corresponding to a desired supply temperature
Data Source
AI summary
A control system for a heating system, including a blending valve configured to be connected to a heat source and a heating circuit conduit. The blending valve is configured to mix a heating water supply with the return flow from the heating circuit and supply the mixed water to the heating circuit. The blending valve has a first temperature threshold corresponding to the desired operating temperature of the heating circuit and a second temperature threshold that is substantially lower than the return temperature. An actuator is provided the switches the blending valve to the first temperature threshold to activate the heating circuit and to the second temperature circuit to deactivate the heating circuit. The actuator is connected to the pump and operates the pump when activating the heating circuit.