Fuel Cell Air Separator for Compressor Debris Removal
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Solution Overview
Problem
The supply of foreign substances, particularly metal pieces from air compressors, degrades the performance and shortens the lifetime of fuel cell stacks.
Innovation Solution
A fuel cell system with a gas-liquid separator is installed between the air supply unit and the stack to remove foreign substances from the air using centrifugal force, incorporating a housing, air inlet, air outlet, and air rotation portion to separate and collect foreign substances, with optional filtering and moisture recycling.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If air compressor is used to supply oxygen to the stack, then oxygen supply efficiency is improved, but foreign substances (metal pieces) are generated and supplied to the stack
Solution Approach 1:
A gas-liquid separator is introduced as an intermediary component between the air compressor and the fuel cell stack. The separator includes a housing with an air inlet, air outlet, and air rotation portion that uses centrifugal force to remove foreign substances from the compressed air before it reaches the stack, thus mediating the harmful effect while preserving the oxygen supply function
Solution Approach 2:
The harmful foreign substances (metal pieces) are extracted and removed from the compressed air stream using the gas-liquid separator. The separator extracts these contaminants through centrifugal separation, allowing only clean air to proceed to the fuel cell stack
2Device complexity
If foreign substances are supplied to the stack, then air supply process is simple, but stack performance and lifetime are degraded
Solution Approach 1:
The gas-liquid separator serves as a protective intermediary that filters foreign substances from the air supply without significantly complicating the overall system. It acts as a barrier between the air compressor and stack, removing contaminants while maintaining relatively simple system architecture
Solution Approach 2:
The gas-liquid separator performs preliminary filtration of foreign substances before the air reaches the fuel cell stack. By removing contaminants in advance, the separator protects the stack from damage and extends its operational lifetime
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
Prevents foreign substances from reaching the stack, maintaining performance and extending the stack's lifetime while reducing noise and enabling efficient moisture recycling.
Implementation Method 1
an air rotation portion disposed in the air inlet and configured to rotate air supplied through the air inlet
Data Source
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AI summary
Disclosed is a fuel cell system. The fuel cell system of the present invention is characterized by a gas-liquid separator for removing foreign substances in air between a stack and an air supply unit. So the present invention can therefore prevent the foreign substances from being supplied to the stack and improve the function and extend the lifetime of the stack.