Integrated Heating Fitting for Pressure-Controlled Circuit Refilling
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Solution Overview
Problem
Existing heating circuit filling and topping up systems are complex to assemble, require significant material and space, and are difficult to control, with multiple individual components that increase installation effort and maintenance needs.
Innovation Solution
A compact fitting arrangement with all components housed in a single unit, where the shut-off valve is positioned before the system separator, and a control unit activates the shut-off valve based on pressure sensor signals, including an ion exchanger and conductivity sensor for water treatment, and a communication device for remote alerts, simplifying assembly and monitoring.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of repair
If multiple individual heating fittings are installed separately in the pipeline, then each component can be independently maintained and replaced, but the assembly work is high and significant material and space are required
Solution Approach 1:
The patent combines multiple heating fittings (system separator, filter, pressure reducer, air vent, and shut-off valve) into a single integrated housing. This merging eliminates the need for separate installations of each component, reducing assembly work and material usage while maintaining all individual functions within one unified structure.
Solution Approach 2:
The common housing serves multiple functions simultaneously: it houses the system separator, filter, pressure reducer, air vent, and shut-off valve, all within a single structure. This multi-functionality reduces the number of separate components needed, simplifying installation while preserving independent maintenance capabilities through standardized connection points.
2Device complexity
If a common housing contains all components, then assembly work is reduced and less material and space are required, but the control and monitoring become more complex
Solution Approach 1:
The common housing is divided into multiple connection points (first housing connector for filter and pressure reducer, second housing connector for air vent and shut-off valve, third housing connector for system separator). This segmentation allows each component to be accessed and controlled independently through its own connection interface, simplifying operation and maintenance despite the integrated structure.
Solution Approach 2:
The patent introduces a control unit that acts as an intermediary between the various components and the user/monitoring system. The control unit receives signals from sensors (pressure sensor, conductivity sensor) and controls the shut-off valve and other components, simplifying the monitoring and control operations for the integrated system.
3Reliability
If the shut-off valve is arranged after the system separator, then the water supply is protected from backflow, but the filling pressure control becomes less effective
Solution Approach 1:
The patent inverts the conventional arrangement by placing the shut-off valve before the system separator (upstream) rather than after it (downstream). This inversion allows the pressure reducer to effectively control filling pressure before water enters the system separator, improving pressure control accuracy while the non-return valves within the system separator maintain backflow protection.
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 solution reduces assembly time and material usage, ensures easy control and maintenance, and provides real-time monitoring and alerts for leaks and ion exchanger maintenance, ensuring efficient and reliable water treatment for heating circuits.
Implementation Method 1
a pressure sensor (p), which transmits its signals to the control device (18)
Implementation Method 2
a conductivity sensor (96), the signals of which are transmitted to the control device (18)
Implementation Method 3
an ion exchanger (24) with a blending device (40)
Data Source
Figure 1
Figure 2
Figure 3
AI summary
A fitting arrangement for filling and refilling heating circuits with water, containing a flow-guiding fitting housing with an inlet and an outlet that can be installed in a pipeline leading to the heating circuit; a stopcock driven by a motor; a filter; a system separator arrangement with an upstream and a downstream non-return valve and a drain; a pressure reducer; and a pressure sensor; is characterized in that the shut-off valve is arranged in the inlet area of a housing that is common to the shut-off valve and the system separator arrangement, the housing has a first housing connector which is arranged hydraulically behind the shut-off valve and in which the filter can be inserted; the housing has a second housing connector which is arranged hydraulically behind the system separator arrangement and in which the pressure reducer can be inserted; and a control unit is provided, which is acted upon by the signals from the pressure sensor and opens the shut-off valve when the pressure drops.