Embedded Throttle Water Separator for Fuel Cell Gas Flow Limiting
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Solution Overview
Problem
Existing water separators in fuel cell systems face challenges in efficiently limiting gas flow while maintaining cost-effectiveness and durability, often requiring additional seals and fasteners that complicate assembly and reduce lifespan.
Innovation Solution
A water separator design featuring a flow-conducting throttle element embedded in the water outlet, either through a hot insert process or injection molding, which limits gas flow without additional seals or fasteners, using materials like plastic, metal, or ceramic for the throttle element, and can withstand high loads.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If additional seals and fasteners are used to connect the throttle element to the water outlet, then the connection reliability is improved, but the device complexity and assembly cost increase
Solution Approach 1:
The throttle element is integrated directly into the water outlet structure, eliminating the need for separate seals and fasteners. The throttle element forms an integral part of the water outlet, combining multiple components into one unified structure that reduces assembly complexity while maintaining connection reliability.
Solution Approach 2:
The water outlet structure itself provides the connection function without requiring additional sealing or fastening components. The design utilizes the inherent structural features of the water outlet to secure the throttle element, making the system self-sufficient and eliminating auxiliary components.
2Stability of the object's composition
If additional seals and fasteners are used to connect the throttle element, then the connection stability is improved, but the service life of the throttle element is reduced
Solution Approach 1:
By integrating the throttle element directly into the water outlet as a unified structure, the invention eliminates the need for separate fasteners and seals that would have limited service life. The integrated design ensures that the throttle element and water outlet wear together as a single component system, extending overall service life while maintaining connection stability.
3Ease of manufacture
If a simple embedding design is used without additional components, then the manufacturing cost is reduced, but the gas flow limitation effectiveness may be compromised
Solution Approach 1:
The throttle element is designed with specific local geometric features at the embedding interface that ensure proper gas flow limitation. The throttle opening dimensions, shape, and position are precisely controlled in the critical flow region while maintaining a simple overall embedding design, achieving both cost-effectiveness and effective gas flow limitation.
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 design simplifies assembly, reduces material costs, enhances durability, and effectively limits gas flow, ensuring stable operation under high loads while maintaining efficiency in fuel cell systems.
Implementation Method 1
The temperature of the insert locally melts the plastic of the water outlet. After solidification, the insert is firmly bonded, particularly in a form-fitting manner, to the material of the water outlet.
Implementation Method 2
In the injection molding or overmolding process, the insert is placed into the corresponding tool and overmolded with the material, particularly plastic, that forms the water outlet or water separator. After the plastic material solidifies, the insert is firmly, particularly in a form-fitting manner, at least partially surrounded by the material of the water outlet.
Data Source
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AI summary
The invention relates to a water separator (10) comprising a flow-conducting interior space (18) and a water outlet (30) which is connected to the interior space (18), wherein the water outlet (30) has a flow-conducting throttle element (50) which is configured as an insert part and is embedded into the water outlet (30) in a positively locking and/or non-positive manner. Furthermore, the invention relates to a use of a water separator and to a fuel cell system with a water separator.