Conical Filter Device for Fuel Cell Cooling Circuits
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Solution Overview
Problem
Existing filter devices in fuel cell cooling circuits experience significant pressure drops and flow losses due to turbulence, which can lead to reduced efficiency and increased risk of damage to the filter medium.
Innovation Solution
A filter device with a support structure that tapers from one end to the other, featuring a conical shape and a flow body that widens in the radial direction, reducing turbulence and flow losses, and a filter medium that is securely supported to increase operational pressure while preventing damage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional filter device is used in the cooling circuit, then the cooling medium can be filtered, but significant pressure drops and flow losses occur due to turbulence
Solution Approach 1:
The support structure is designed with a conical shape that curves gradually from the larger first end to the smaller second end, eliminating sharp corners and abrupt transitions. This curvature reduces flow separation and turbulence, allowing the cooling medium to pass through with minimal pressure drop while maintaining effective filtering capability
Solution Approach 2:
The cross-sectional area of the support structure changes gradually along its length, transitioning from a larger area at the first end to a smaller area at the second end. This gradual parameter change prevents sudden flow contraction and expansion, reducing turbulence and energy losses while preserving the filter's ability to remove particles from the cooling medium
2Reliability
If a conventional filter device is used in the cooling circuit, then the cooling medium can be filtered, but flow losses due to turbulence increase
Solution Approach 1:
The conical support structure with smooth curved surfaces guides the cooling medium through the filter medium without creating turbulent flow patterns. This streamlined geometry maintains laminar flow conditions, reducing flow losses and preserving high flow rates while ensuring reliable particle removal
Solution Approach 2:
The filter device is divided into a support structure and a separate filter medium, allowing the support structure to be optimized for flow guidance while the filter medium handles the filtering function. This segmentation enables the support structure to minimize turbulence and maximize flow rate without compromising filtering capability
3Device complexity
If the filter medium is supported in the axial direction, then the structure is simple, but the filter medium may be damaged at high pressures
Solution Approach 1:
The filter medium is designed as a thin-walled conical structure that can flexibly support itself under pressure. The conical geometry provides inherent structural strength, allowing the thin-walled filter medium to withstand high operating pressures without damage while maintaining a simple overall device structure
Solution Approach 2:
The filter medium combines filtering material with a structurally sound conical support structure, creating a composite component that provides both filtering capability and pressure resistance. This integration eliminates the need for separate complex support mechanisms while ensuring durability at high pressures
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 solution effectively reduces pressure drops and flow losses, allowing the filter device to operate at higher pressures and maintain efficiency, while also preventing damage to the filter medium, thus enhancing the performance and reliability of the fuel cell system's cooling circuit.
Implementation Method 1
a flow body protruding into the interior space towards the first end, which tapers towards the first end... reduces turbulence and similar flow losses in the region of the second end of the support structure
Implementation Method 2
The filter medium is in particular suitable for filtering or separating particles from a fluid flow
Data Source
AI summary
The invention relates to a filter device comprising a support structure which extends between a first end and a second end and which defines an interior space tapering from the first end to the second end, wherein the support structure has at the second end a flow body which protrudes into the interior space in the direction of the first end and tapers in the direction of the first end, and wherein the support structure has openings which connect the interior space in a fluidly conducting manner to an environment of the support structure. Furthermore, the filter device has a filter medium which is accommodated in the interior space of the support structure.