Residence station
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Solution Overview
Problem
Existing hydraulic assemblies for compact heating systems require complex configurations with multiple valves and pumps, making them difficult to construct and maintain, especially in home stations where reliability and efficiency in heating both heating circuits and service water are essential.
Innovation Solution
A hydraulic assembly with a mixing valve upstream of the circulating pump unit and a switching valve downstream, allowing for temperature control and flow switching between heating circuits and service water heat exchangers using a single circulating pump, integrated into a compact design with standard components.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a hydraulic assembly uses multiple valves and pumps for heating circuits and domestic hot water, then the system can provide both heating functions, but the construction complexity and difficulty of maintenance increase
Solution Approach 1:
The patent combines the mixing valve and diverter valve into a single integrated valve unit with a common body and shared internal passages. This merging of previously separate components reduces the number of external connections, simplifies construction, and maintains the ability to provide both heating circuit and domestic hot water functions through coordinated valve element positioning.
Solution Approach 2:
The integrated valve unit performs multiple functions simultaneously: it mixes hot and cold water, diverts flow between heating circuit and domestic hot water paths, and regulates temperatures. The single valve body with multiple valve elements (first and second valve elements) enables one component to replace what would traditionally require separate valves and pumps.
2Ease of operation
If a hydraulic assembly uses multiple separate valves and pumps, then flow control is precise, but the number of external connections and assembly difficulty increase
Solution Approach 1:
The patent integrates multiple valve functions into a single valve body with shared internal passages and coordinated valve elements. This reduces the number of external connections required and simplifies assembly while maintaining precise flow control through the coordinated action of the first and second valve elements that can independently regulate different flow paths.
3Reliability
If external pumps are used for heat transfer medium supply, then the system can operate independently, but reliance on external pumps reduces reliability in home stations
Solution Approach 1:
The patent integrates the pump function within the valve unit itself, creating a self-contained hydraulic assembly. The pump is positioned to draw from a common suction line and supply both the heating circuit and domestic hot water paths through the integrated valve unit, eliminating the need for separate external pumps and reducing external connections while improving reliability.
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 configuration simplifies the assembly, reduces external connections, and ensures reliable heat transfer medium supply to both heating circuits and service water heat exchangers, eliminating reliance on external pumps and enhancing efficiency in home stations.
Implementation Method 1
The mixing valve is designed to mix the flows from the first and second inlets and to change the mixing ratio of the flows by moving at least one valve element within the mixing valve
Implementation Method 2
a domestic hot water heat exchanger, which is designed to heat domestic hot water. For this purpose, the heat transfer fluid circulates through one side of the domestic hot water heat exchanger
Implementation Method 3
a circulation pump unit, which is connected downstream to a heating circuit supply connection. This allows the circulation pump unit to pump a liquid heat transfer fluid
Data Source
Figure 1
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Figure 3
AI summary
The invention relates to a hydraulic assembly with an input connection 14, a circulating pump unit 6; 78, at least one heating circuit flow connection 22 located downstream of the circulating pump unit and a service water heat exchanger 12, with a mixing valve 8 being arranged upstream of the circulating pump unit, which has an outlet 32 with the circulating pump unit 6; 78, having a first input 34 to the input port 14 and a second input 36 to a heating circuit return port 20, and downstream of the circulating pump unit 6; 78, a changeover valve 10 is arranged, which has an input connected to the circulating pump unit 6; 78, a first output 44 to the at least one heating circuit flow connection 22 and a second output 46 to the service water heat exchanger 12.