Integrated Hydraulic Valve Device Reducing Leakage Risks
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Solution Overview
Problem
Existing valve devices in hydraulic systems are bulky, costly, and require multiple components, leading to increased complexity and potential leaks, which affects their functional reliability and efficiency.
Innovation Solution
A compact valve device design integrating a hollow check valve piston guided by a pressure-limiting valve piston within a common cartridge housing, reducing the number of components and connection points, and utilizing a modular structure for cost-effective production and simplified maintenance.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple separate valve components are used to achieve pressure cut-off functionality, then functional reliability can be maintained through component independence, but device complexity and space requirements increase
Solution Approach 1:
The patent combines the pressure relief valve and check valve into a single integrated valve device with a common valve body. The pressure relief valve piston and check valve piston are housed together in one valve chamber, sharing common sealing surfaces and fluid pathways. This merging reduces the number of separate components and connection points while maintaining the functional reliability of both valve operations through their integrated design.
2Reliability
If multiple separate valve components are used, then each component can be optimized independently, but the number of connection points increases leading to higher leakage risks
Solution Approach 1:
The integrated valve device reduces the number of external connection points by combining multiple valve functions within a single housing. The pressure relief valve and check valve share common fluid pathways and sealing surfaces within the valve body, eliminating the need for separate connection points that would exist if the valves were installed as independent components. This reduces potential leakage points while maintaining component optimization through the shared design.
3Ease of manufacture
If separate valve components are used, then maintenance can be performed on individual components, but the overall system requires more space and has higher purchase price
Solution Approach 1:
The patent integrates the pressure relief valve and check valve into a single compact valve device with a common valve body and shared internal components. This merging reduces the total space required compared to installing separate valve components, while the modular design allows for cost-effective manufacturing through standardized production of the integrated unit. The shared sealing surfaces and fluid pathways reduce material requirements and assembly complexity.
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 integrated design minimizes space requirements, reduces leakage risks, and enhances operational reliability by consolidating functions into a single unit, allowing for efficient fluid management and reduced maintenance needs.
Implementation Method 1
a control piston (244; 344; 444; 644; 844) which can be acted upon by the fluid pressure at the second pressure port (114; 214; 314; 414; 614; 814)
Implementation Method 2
The hollow check valve piston (272; 372; 472; 672; 872) can be acted upon by the fluid pressure at the first pressure port (112; 212; 312; 412; 612; 812) in such a way that the fluid pressure at the first pressure port (112; 212; 312; 412; 612; 812) counteracts the force of the fluid pressure at the second pressure port (114; 214; 314; 414; 614; 814)
Data Source
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AI summary
The invention relates to a valve device (200) comprising at least one tank pressure port (218), a first pressure port (212), a second pressure port (214), and a pressure shut-off valve (224), which is switched between the individual ports (212, 214, 218), and which has at least two valve components (226, 228). Upon reaching a predefinable pressure cut-off value, the first pressure port (212) can be connected to the tank pressure port (218) by means of the first valve component (226). In the event of the fluid pressure being higher at the second pressure port (214) than at the first pressure port (212), the second pressure port (214) can be separated from the first pressure port (212) by means of the second valve component (228). The invention is characterized in that both valve components (226, 228) are combined to form a tradable structural unit, and in that for this purpose, both valve components (226, 228) are integrated in a common valve housing (230), preferably making direct contact. The invention further relates to a hydraulic system having such a valve device.