Non-Circular Sensor Electrode Groove Formation Prevention
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Solution Overview
Problem
Existing methods for cleaning and grinding sulfite sensor electrodes often result in electrode deformation due to groove formation on the ceramic stone, leading to compromised signaling capabilities and frequent replacement, which is costly.
Innovation Solution
The use of non-circular or non-symmetrically fixed circular electrodes with a rotating ceramic stone that follows a non-circular path to reduce groove formation on the ceramic stone, thereby minimizing electrode deformation and extending the operational life of both the sensor and the ceramic stone.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a rotating ceramic stone is used to clean and grind the electrode, then residue is removed from the electrode surface, but the ceramic stone develops grooves that cause electrode deformation
Solution Approach 1:
The patent applies asymmetry by changing the electrode shape from circular to non-circular (oval, elliptical, square, or other irregular shapes). This asymmetric geometry ensures that during rotation with the ceramic stone, the contact point continuously varies, preventing the formation of grooves at fixed locations. The asymmetric design distributes wear evenly across the ceramic stone surface, eliminating the groove formation that causes electrode deformation and signaling failures.
2Measurement precision
If frequent electrode and ceramic stone replacement is performed, then detection accuracy is maintained, but capital and operational costs increase
Solution Approach 1:
The patent implements continuity of useful action by designing a system where the non-circular electrode shape continuously varies the contact dynamics between the electrode and ceramic stone during rotation. This continuous variation prevents wear concentration and groove formation, allowing the ceramic stone to maintain its cleaning effectiveness over extended periods. The useful action of cleaning and grinding continues uniformly without degradation, eliminating the need for frequent replacements to maintain detection accuracy.
3Ease of manufacture
If a circular symmetric electrode is used, then manufacturing is simplified, but the electrode deforms during cleaning with worn ceramic stones
Solution Approach 1:
The patent applies asymmetry by changing the electrode shape from circular to non-circular (oval, elliptical, square, or other irregular shapes). This asymmetric geometry ensures that during rotation with the ceramic stone, the contact point continuously varies, preventing the formation of grooves. The asymmetric design distributes wear evenly across the ceramic stone surface, eliminating the groove formation that causes electrode deformation and signaling failures.
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 significantly extends the operational life of both the sensor and the ceramic stone, reducing capital and operational costs by maintaining effective cleaning and grinding capabilities without electrode deformation.
Implementation Method 1
a planar surface of the rotating ceramic stone is brought into contact with an exposed electrode ring surface... the rotation of the ceramic stone removes residue from the exposed surface of the electrode ring
Data Source
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AI summary
A sensor (410, 510, 610) for detection and measurement of a particular substance present in a liquid is disclosed. The sensor (410, 510, 610) includes a non-circular or non-symmetrically fixed electrode (418, 518, 618) for detection and measurement of a particular substance present in a liquid in which said sensor (410, 510, 610) is submersed. The sensor (410, 510, 610) with non-circular or nonsymmetrically fixed electrode (418, 518, 618) and method of using the same reduces or eliminates electrode (418, 518, 618) deformation upon residue removal therefrom thereby prolonging operating life.