Ion Exchange Filter Housing Design for Fuel Cell Pressure Resistance
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Solution Overview
Problem
Ion exchange filters in fuel cell systems face reduced power generation efficiency due to ion contamination in cooling water, and existing resin-based filters lack durability under pressure.
Innovation Solution
An ion exchange filter design with a housing and cartridge configuration that includes a flow-in port above the cartridge's bottom, a gap between the housing and cartridge for fluid flow, and seal members to prevent fluid leakage, along with a vibration isolation member to support the cartridge, ensuring effective filtration and durability.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Weight of moving object
If resin material is used for the housing and cartridge, then light-weight is realized, but pressure-resisting property is reduced
Solution Approach 1:
The filter is divided into two functional parts: the housing and cartridge are made of lightweight resin material, while the lid is made of metal material with high pressure-resisting properties. This segmentation allows each component to be optimized for its specific function - the resin parts provide light weight and the metal lid provides pressure resistance.
Solution Approach 2:
The filter employs composite construction by combining resin material for the housing and cartridge with metal material for the lid. This composite approach allows the system to achieve both light weight (from resin) and high pressure-resisting property (from metal), resolving the contradiction between these two properties.
2Ease of operation
If the flow-in port is positioned at the bottom of the housing, then fluid flow is simplified, but the joining performance of the lid and housing deteriorates due to fluid pressure
Solution Approach 1:
The flow-in port is repositioned from the bottom (vertical dimension) to the peripheral wall (horizontal/circumferential dimension) of the housing. This dimensional change allows the fluid to flow horizontally across the bottom rather than vertically upward, simplifying the flow path while keeping the lid-Housing joining area free from direct fluid pressure exposure.
Solution Approach 2:
The gap between the housing and cartridge acts as an intermediary flow channel. Fluid enters through the flow-in port in the peripheral wall, flows through this gap channel along the bottom, and then enters the cartridge. This intermediary path separates the fluid flow from the lid-Housing joining area, preventing pressure-related deterioration of the joining performance.
3Productivity
If a gap is formed between the housing and cartridge for fluid flow, then filtration effectiveness is improved, but fluid may leak to the joining side
Solution Approach 1:
The harmful effect of fluid leakage is extracted and addressed by adding a seal member that specifically targets the gap between the housing and cartridge. The seal member is disposed entirely circumferentially, sectioning the gap into a fluid flow-in side and a joining side, thereby preventing fluid from leaking to the joining area while preserving the gap's filtration function.
Solution Approach 2:
The seal member acts as an intermediary element that selectively blocks fluid flow in the gap. It allows fluid to flow through the gap for filtration purposes while simultaneously preventing fluid from reaching the joining side where it would cause harmful leakage effects.
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 design enhances durability and maintains high joining performance, ensuring effective ion exchange and improved power generation efficiency by preventing fluid pressure from affecting the filter's integrity and allowing uniform resin utilization.
Implementation Method 1
a cartridge which is disposed inside the housing and in which an ion exchange resin is filled, the fluid flowing in the cartridge through the flow-in port is filtrated by the ion exchange resin
Data Source
AI summary
An ion exchange filter for a fuel cell system includes a housing with a fluid flow-in port and a cartridge which is disposed inside the housing and in which an ion exchange resin is filled, the fluid flowing in the cartridge through the flow-in port is filtrated therein by the ion exchange resin and the filtrated fluid flows out through the flow-out port. The housing has a casing having an opened upper end and a lid closing the upper end opening, and the fluid flow-in port has an outer peripheral wall of the casing at a portion above a bottom surface of the cartridge disposed inside the housing and the fluid flow-out port is formed to the lid, and a gap is formed between the housing and the cartridge for flowing the fluid flowing inside the housing through the flow-in port towards the bottom portion of the housing.