Fuel Cell Humidifier with Movable Partition for Precise Moisture Control
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Solution Overview
Problem
Existing fuel cell humidifiers face challenges in accurately adjusting the amount of humidification based on operating conditions due to complex structures and the need for separate bypass flow paths, which complicates design and reduces spatial utilization.
Innovation Solution
A humidifier design that actively controls the amount of humidification by adjusting the flow rate of moist air supplied to the humidification unit, eliminating the need for a separate bypass flow path and simplifying the structure, allowing for precise adjustment of humidification levels based on fuel cell stack conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Adaptability or versatility
If a separate bypass flow path is provided to adjust humidification amount, then the humidification control is achieved, but the device structure becomes complicated and spatial utilization deteriorates
Solution Approach 1:
The patent merges the humidification control function directly into the existing flow path by providing a movable partition that can adjust the effective cross-sectional area of the humidification space. This eliminates the need for a separate bypass flow path, as the control is achieved by modifying the geometry of the existing humidification chamber rather than adding parallel flow paths.
Solution Approach 2:
The patent employs a movable partition that can dynamically adjust the cross-sectional area of the humidification space based on operating conditions. This dynamic adjustment mechanism allows the device to adapt humidification levels without requiring complex fixed structures or separate bypass paths, simplifying the overall device architecture while maintaining control flexibility.
2Adaptability or versatility
If a separate bypass flow path is provided to adjust humidification amount, then the humidification control is achieved, but spatial utilization deteriorates
Solution Approach 1:
The control mechanism is merged within the existing humidification chamber volume. By adjusting the movable partition position, the effective humidification space is modified without requiring additional external bypass paths, thereby maximizing spatial utilization within the available housing volume.
Solution Approach 2:
The movable partition enables dynamic reconfiguration of the humidification space volume. This allows the system to adjust humidification levels by utilizing different portions of the existing chamber volume rather than requiring additional fixed bypass structures, optimizing spatial utilization across varying operating conditions.
3Ease of operation
If the humidification amount is adjusted by controlling inflow gas flow through bypass, then humidification levels are regulated, but the structure becomes complicated
Solution Approach 1:
The humidification chamber is segmented by a movable partition that can adjust the effective cross-sectional area. This segmentation allows independent control of the humidification flow path without requiring complex external bypass systems, simplifying the overall flow path structure while maintaining operational flexibility.
Solution Approach 2:
The movable partition provides a dynamic means to adjust the humidification cross-sectional area directly within the main flow path. This eliminates the need for complex bypass valve mechanisms and multi-path flow control systems, achieving ease of operation through a simpler, more integrated structural design.
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 approach enables accurate adjustment of humidification levels, improves humidification performance, and simplifies the design, enhancing spatial utilization and operational efficiency of the fuel cell system.
Implementation Method 1
a humidification unit provided in the housing and configured to humidify the inflow gas by using the moist air
Data Source
AI summary
A humidifier for a fuel cell includes: a housing that includes a moist air supply port through which moist air is supplied, a moist air discharge port through which the moist air is discharged, and an inflow gas supply port through which inflow gas is supplied; a humidification unit provided in the housing to humidify the inflow gas by using the moist air; and a humidification amount adjusting unit to selectively adjust an amount of humidification of the inflow gas by the humidification unit based on a flow rate of the moist air supplied to the moist air supply port, thereby obtaining an advantageous effect of accurately adjusting the amount of humidification based on an operating condition of a fuel cell stack.