Electrochemical Gas Sensor Layout With Internal Gas Conduction
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Solution Overview
Problem
Existing gas sensors require substantial structural space for the gas conduction path around the perimeter of the electrodes, limiting miniaturization, especially in small sensors.
Innovation Solution
The gas conduction path is arranged internally within the structural space defined by the electrodes, utilizing feedthrough openings in the separator and/or carrier membrane, allowing for a compact design without additional perimeter space requirements.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If the gas conduction path is arranged around the perimeter of the electrodes, then the gas can be conducted to the electrodes, but substantial structural space is required, limiting miniaturization
Solution Approach 1:
The gas conduction path is transitioned from a peripheral arrangement (2D perimeter routing) to an internal arrangement (3D space utilization within electrode structure). The feedthrough openings provide vertical/gas-phase access through the electrode thickness, enabling compact footprint while maintaining functional gas delivery paths.
Solution Approach 2:
The gas conduction path is nested within the electrode structure itself rather than surrounding it. The feedthrough openings are integrated into the electrode body, and the gas channels are positioned within the structural space defined by the electrodes, creating a compact nested configuration that eliminates peripheral space requirements.
2Volume of moving object
If feedthrough openings are added in the separator and carrier membrane, then internal gas conduction path is achieved, but manufacturing complexity increases
Solution Approach 1:
The separator and carrier membranes incorporate feedthrough openings that can be manufactured using porous material techniques or stamping processes. These openings are integrated into the membrane structure during fabrication, allowing gas permeation while maintaining mechanical integrity, and can be produced in various patterns and sizes to control diffusion rates.
Solution Approach 2:
The feedthrough openings allow adjustment of gas diffusion parameters (size, number, distribution) to optimize sensor performance for different applications. By varying the opening parameters, the gas conduction characteristics can be tuned without changing the overall sensor architecture, simplifying manufacturing while enabling customization.
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
Enables the production of smaller sensors by eliminating the need for perimeter space, facilitating miniaturization and enabling precise gas diffusion control through adjustable feedthrough openings.
Implementation Method 1
gas fractions are conducted through carrier membranes
Data Source
AI summary
An electrochemical gas sensor (1) having a stacked assembly of at least one first electrode (3) and a second electrode (6), which are respectively arranged on a carrier membrane (2, 5), and a separator (4) arranged between the electrodes (3, 6), including a gas conduction path (14) between the first electrode (3) and the second electrode (6). The gas conduction path (14) is constituted within the structural space defined by the electrodes (3, 6).