Hydraulic valve device and centrifugal pump assembly including such hydraulic valve device
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Solution Overview
Problem
Existing hydraulic valve devices in compact heating systems lack flexibility and functionality for optimizing fluid flow between heating circuits and heat exchangers, leading to inefficiencies and potential overheating issues.
Innovation Solution
A hydraulic valve device with a rotatable valve element and separate sealing portions for each inlet port, incorporating a bypass valve that opens based on differential pressure, allowing variable flow control and preventing overheating by maintaining fluid flow through a heat exchanger when the heating circuit is closed.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Device complexity
If a single sealing portion is used to close both inlet ports, then the device complexity is reduced, but the adaptability and flow optimization capability deteriorate
Solution Approach 1:
The valve element is divided into two separate sealing portions (first sealing portion and second sealing portion), each independently capable of closing a respective inlet port. This segmentation allows each sealing portion to be optimized for its specific flow path requirements, enabling independent flow control and optimization for heating circuit and heat exchanger paths.
2Ease of operation
If the valve element moves perpendicular to the inlet port openings, then the sealing action is simplified, but the integration with pump-driven flow actuation deteriorates
Solution Approach 1:
The valve element is designed to move in a direction parallel to the inlet port openings (changing the movement dimension from perpendicular to parallel), which enables the valve to be actuated by the pump-driven flow while maintaining effective sealing through the geometric relationship between the sealing portions and valve seats.
3Measurement precision
If the heating circuit is completely closed, then the flow control precision for heating is improved, but the system reliability deteriorates due to potential overheating
Solution Approach 1:
A bypass valve is introduced as an intermediary component that automatically opens under differential pressure conditions to provide an alternative flow path through the heat exchanger. This bypass valve acts as a safety mechanism that maintains system reliability by preventing overheating while allowing precise flow control through the primary heating circuit valve.
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
Enhances fluid flow optimization and prevents overheating by enabling flexible flow control and maintaining circulation through a heat exchanger, even when the heating circuit is inactive, thus improving system efficiency and safety.
Implementation Method 1
The bypass valve is designed to open the second inlet port depending on a differential pressure acting on the valve element when the second sealing portion closes the second inlet port
Implementation Method 2
the valve element is driven by a fluid flow produced by a pump
Data Source
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AI summary
The invention refers to a hydraulic valve device comprising a first inlet port (20) and a second inlet port (22) and a valve element (24) for selectively closing one of the first (20) and the second inlet port (22), wherein the valve element (24; 24') is rotatable between two valve positions such that a surface of the valve element is moved in a direction parallel to openings of the inlet ports (20, 22), wherein the valve element (24; 24') comprises two separate sealing portions (72, 74), a first sealing portion (72) for closing the first inlet port (20) and a second sealing portion (74) for closing the second inlet port (22), the two sealing portions (72, 74) being arranged such that in a first valve position a first sealing portion (72) closes the first inlet port (20) and in a second valve position a second sealing portion (74) closes the second inlet port (22), as well as to a centrifugal pump device comprising such hydraulic valve device.