Flow device for retrofitting a heating system and a heating system
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Solution Overview
Problem
Existing heating systems require complex control technology and additional sensors/actuators for retrofitting, making it difficult to integrate a heat pump into an existing heating circuit without significant effort.
Innovation Solution
A flow device with a check valve and overflow valve, arranged hydraulically parallel to each other, allows the heated medium to flow back to the second heat generator during a standstill, automatically switching it off without additional sensors or control systems, ensuring efficient operation without hindering flow from the second to the first connection point.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a heat pump is integrated into an existing heating circuit with complex control technology and sensors, then the heating system can achieve efficient temperature control, but the device complexity and difficulty of retrofitting increase significantly
Solution Approach 1:
The patent extracts the complex control technology, sensors, and actuators from the heating system integration process. Instead of requiring these components for heat pump integration, the invention uses a simple hydraulic connection with a check valve that allows the heat pump to operate independently without interfering with the existing heating circuit's control system.
Solution Approach 2:
The heat pump system is designed to be self-regulating through hydraulic principles. The check valve automatically prevents backflow of heating medium from the main circuit to the heat pump, and the system self-adjusts based on temperature differences without requiring external sensors or control signals.
2Reliability
If additional sensors and actuators are installed for heat pump integration, then the system can monitor and control the heating medium flow, but the ease of manufacture and installation deteriorates
Solution Approach 1:
The patent removes the need for additional sensors, actuators, and complex control components from the heat pump integration process. The solution relies solely on passive hydraulic elements (check valve) and natural flow dynamics, dramatically simplifying both manufacturing and installation while maintaining reliable heating medium flow control.
3Loss of energy
If hydraulic buffer storage or switches are added to prevent heat pump operation during standstill, then the system can avoid unnecessary heating, but the device complexity increases
Solution Approach 1:
The system automatically prevents unnecessary heating during standstill conditions through the check valve mechanism. When the heating circuit is not flowing, the check valve blocks backflow to the heat pump, and the temperature difference between the heating medium and ambient air naturally shuts down the heat pump without requiring sensors, switches, or control logic.
4Ease of operation
If a check valve and overflow valve are arranged hydraulically parallel, then the heat pump can operate independently without additional control, but the flow device complexity increases
Solution Approach 1:
The patent uses hydraulic principles to achieve independent heat pump operation. The check valve and overflow valve are arranged in parallel to create a passive control system that automatically regulates heat pump operation based on hydraulic conditions, eliminating the need for electrical controls while maintaining operational independence.
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
Enables retrofitting of heating systems with minimal control technology, allowing for easy integration of a heat pump into existing systems without additional sensors or higher-level regulation, ensuring efficient operation and reduced complexity.
Implementation Method 1
the first connecting line is connected to the second connecting line via a check valve
Implementation Method 2
the first connecting line is connected to the second connecting line via a check valve and via an overflow valve
Data Source
Figure 1~3
Figure 4
AI summary
The invention relates to a flow device (7) for retrofitting a heating system and a heating system comprising a first connecting line (7.10) with an inlet (7.11) and an outlet (7.12) and a second connecting line (7.20) with an inlet (7.21) and an outlet (7.22). According to the invention, the first connecting line (7.10) is connected to the second connecting line (7.20) via a check valve (7.1) and a bypass valve (7.2), wherein the check valve (7.1) and the bypass valve (7.2) are arranged hydraulically parallel to each other and hydraulically between the inlet (7.11, 7.21) and outlet (7.12, 7.22) connections.