Electrolyzer Gasket Notch Structure for Separator Sealing
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Solution Overview
Problem
Conventional electrolyzer gaskets face challenges in securely holding separators without bending or leaking, particularly when using porous membranes, leading to issues with durability and leakage prevention, especially in configurations with multiple sealing elements and complex gasket structures.
Innovation Solution
A picture-frame-shaped electrolyzer gasket with a notch on one surface, allowing the separator to be accommodated in a gap between the notch and the metal frames, ensuring stable contact with either the anode or cathode surface, reducing the risk of leakage and improving workability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If multiple sealing elements (gaskets and O-rings) are used to sandwich the separator, then leakage prevention is improved, but device complexity and assembly difficulty increase
Solution Approach 1:
The patent combines multiple sealing functions into a single integrated gasket structure. The gasket includes a body portion and a protruding portion that work together to seal both the edge part and the central part of the separator, eliminating the need for multiple separate gaskets and O-rings while maintaining effective leakage prevention
Solution Approach 2:
The gasket is divided into functional segments: a body portion for general sealing and a protruding portion specifically for sealing the edge part of the separator. This segmentation allows each part to perform its specific sealing function effectively while being part of a unified structure
2Reliability
If two gaskets are used to sandwich the separator, then leakage prevention is improved, but assembly time and effort increase
Solution Approach 1:
The patent merges the functions of multiple gaskets into a single gasket structure that can be installed in one piece, significantly reducing assembly time and effort while maintaining effective leakage prevention through its integrated body and protruding portions
3Device complexity
If a single gasket with a slit is used to hold the separator, then device complexity is reduced, but manufacturing precision requirements increase
Solution Approach 1:
The gasket is segmented into a body portion and a protruding portion, where the protruding portion provides a mechanical stop that naturally positions the separator without requiring high-precision slits or openings, thereby reducing manufacturing precision requirements
4Reliability
If the separator is held in the middle between anode and cathode, then airtightness is maintained, but separator stability decreases due to bending
Solution Approach 1:
The gasket's protruding portion extends in a direction perpendicular to the main sealing surface, creating a third dimensional feature that mechanically supports the separator edge and prevents bending while maintaining the sealing function in the primary plane
Data Source
AI summary
There are provided an electrolyzer gasket, which can accommodate and hold a separator inside an electrolyzer by a simple handling, can more surely prevent leakage of an electrolyte and an electrolytically generated gas from the inside of the electrolyzer, can keep the separator in such a state that the separator is held at a position that is in contact with one of electrodes and is located along the electrode and therefore can suppress damage of the separator and makes it possible to use the separator stably for a long period of time, and an electrolyzer. An electrolyzer gasket including a picture-frame-shaped thin-plate-like frame having a first surface being in contact with an anode metal frame and a second surface being in contact with a cathode metal frame, wherein the gasket has a structure in which a notch having a difference in level of approximately the same thickness as the thickness of the separator, the notch obtained by thinly scraping off, in a uniform thickness, a region including the edge on the anode chamber side or the cathode chamber side, is formed on any one of the first surface and the second surface, and the edge part of the separator is accommodated and held in the notch, and an electrolyzer using the electrolyzer gasket.