Non-Circular Bypass Channel Humidifier for Fuel Cell Space Optimization
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Solution Overview
Problem
The existing humidifier devices for fuel cell systems in motor vehicles have a suboptimal use of available installation space, resulting in a small effective volume for fluid humidification due to circular cross-section designs, which limits the adjustment of humidity and dew point.
Innovation Solution
A humidifier device with a housing featuring a non-circular, preferably angular or rectangular cross-section bypass channel integrated into the housing, allowing for better space utilization and increased effective volume, along with a control element like a throttle valve to adjust humidity and dew point, and a single cartridge with a non-circular cross-section to optimize installation space.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If circular cross-section cartridges are used in the humidifier device, then the device structure is simple and easy to manufacture, but the available installation space is not optimally utilized resulting in small effective volume
Solution Approach 1:
The patent applies asymmetry by changing the cartridge cross-section from circular to non-circular (rectangular or square). This asymmetric shape allows the cartridges to pack more efficiently in the available installation space, eliminating gaps and increasing the effective volume for humidification while maintaining manufacturing simplicity through standard molding processes.
Solution Approach 2:
The patent utilizes dimensional optimization by arranging cartridges in a multi-dimensional configuration within the housing. The non-circular cross-section enables better spatial arrangement in three-dimensional space, maximizing the use of available installation volume and increasing the effective humidification capacity.
2Adaptability or versatility
If circular cross-section bypass channel is used, then the flow path is simple, but the installation space utilization is suboptimal limiting humidity adjustment capability
Solution Approach 1:
The bypass channel is designed with a non-circular cross-section that matches the housing geometry. This asymmetric design allows the bypass channel to be integrated more efficiently into the available space, providing sufficient volume for humidity and dew point adjustment while maintaining a simple flow path structure.
3Productivity
If multiple cartridges are arranged adjacent to each other, then the humidification capacity is increased, but spacings result in wasted installation space
Solution Approach 1:
The patent uses non-circular cartridges with shapes that fit together like puzzle pieces, eliminating gaps between adjacent cartridges. This asymmetric geometry allows multiple cartridges to be arranged in close proximity without wasted space, increasing both humidification capacity and effective volume simultaneously.
Solution Approach 2:
The patent merges the cartridges and bypass channel into an integrated assembly where the bypass channel is formed between and around the cartridges. This combining of elements eliminates the need for separate spacing components and maximizes the utilization of installation space for productive humidification functions.
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 enhances the effective volume of the humidifier device by optimizing the use of available space, allowing for adjustable humidity and dew point settings, thereby improving the humidification efficiency in fuel cell systems.
Implementation Method 1
A membrane is arranged in the humidifier device, which is only permeable to water vapor
Data Source
AI summary
A humidifier device for humidifying a fluid in a fuel cell system of a motor vehicle is provided. The humidifier device has a housing, in which is arranged at least one membrane, and a bypass channel for bypassing the at least one membrane. The bypass channel has a non-circular cross-section.