Injection-Molded Plastic Ion Exchanger Housing with Embedded Filters
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Solution Overview
Problem
Existing ion exchangers for coolant circuits in fuel cell systems are costly and require complex fastening methods for porous metallic or sintered glass filter elements, which are not only expensive but also difficult to integrate effectively.
Innovation Solution
A plastic housing with embedded plastic filter elements produced through injection molding, where the filter elements are securely fixed by form-fit and material fusion connections, eliminating the need for additional fastening and allowing for the use of inexpensive plastic materials, effectively retaining ion exchanger medium and filtering coolant.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If porous metallic or sintered glass filter elements are used, then effective filtering and retention is achieved, but manufacturing cost increases and integration complexity increases
Solution Approach 1:
The patent combines the filter element and housing into a single integrated component manufactured through injection molding. The filter element is embedded directly into the housing structure, eliminating the need for separate fastening mechanisms and reducing assembly complexity while maintaining filtering effectiveness.
Solution Approach 2:
The housing structure serves multiple functions: it provides structural support, acts as the filter element holder, and integrates the filtering function through the embedded filter element. This multi-functionality reduces the number of separate components needed and simplifies the overall device structure.
2Reliability
If porous metallic or sintered glass filter elements are used, then effective filtering is achieved, but manufacturing cost increases
Solution Approach 1:
The patent employs a disposable plastic filter element that can be easily manufactured through injection molding. This approach replaces expensive metallic or sintered glass filters with a cost-effective plastic alternative that achieves sufficient filtering performance for the application.
Solution Approach 2:
By integrating the filter element directly into the housing through injection molding, the patent eliminates separate manufacturing and assembly steps for the filter, reducing overall manufacturing costs while maintaining filtering effectiveness.
3Reliability
If additional fastening measures are implemented, then filter element retention is improved, but device complexity and manufacturing cost increase
Solution Approach 1:
The filter element is embedded directly into the housing structure through injection molding, creating an integrated component where the filter and housing become a single unit. This eliminates the need for additional fastening measures while ensuring secure filter element retention.
Solution Approach 2:
The injection molding process itself provides the retention function by embedding the filter element during manufacturing. The structural design of the molded housing automatically secures the filter element in position without requiring separate fastening components or assembly steps.
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 solution simplifies the manufacturing process, reduces costs by using inexpensive plastic filter elements, and ensures effective retention of ion exchanger medium while filtering coolant, enhancing the efficiency and reliability of ion removal in coolant circuits.
Implementation Method 1
a plastic filter element is arranged in the outlet and is embedded by injection molding in the plastic material
Implementation Method 2
the plastic filter element is embedded by injection molding in the plastic material
Implementation Method 3
an ion exchanger medium is received... the ions in the coolant, i.e., the anions and cations, are removed by the ion exchanger medium from the coolant
Data Source
AI summary
An ion exchanger for a coolant circuit is provided with a housing that has an inlet and an outlet for a coolant. An ion exchanger medium is disposed in the housing. The housing is made of a plastic material and is an injection-molded part. A first plastic filter element is arranged in the outlet and embedded by injection molding in the first plastic material of the housing. In the inlet, a second plastic filter element is arranged and embedded by injection molding in the plastic material of the housing.