Electrolytic Cell Anode Cathode Geometry for Pool Chlorine Generation
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Solution Overview
Problem
Conventional automated chlorinators for swimming pools are expensive, fragile, and prone to premature failure due to the point/edge effect, which leads to increased maintenance and replacement costs.
Innovation Solution
The electrolytic cell design features an anode that extends beyond the cathode in both length and width, distributing electrical pressure evenly and minimizing point/edge degradation, with optional use of semi-conductor materials like titanium and corrosion-resistant coatings, allowing for stacking to increase voltage and efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the coated anode is made smaller to reduce cost, then manufacturing cost decreases, but electrode longevity deteriorates due to increased electrical pressure concentration
Solution Approach 1:
The anode is segmented into multiple independent coated segments spaced apart from each other, rather than using a single continuous small anode. This segmentation distributes the electrical pressure across multiple surfaces, reducing concentration at any single point while maintaining cost-effectiveness through modular construction
Solution Approach 2:
The patent transitions from reducing anode size in two dimensions to distributing anode presence across the third dimension by spacing multiple segments apart vertically or horizontally. This dimensional approach increases the effective surface area for chlorine generation without requiring a single large continuous anode structure
2Ease of manufacture
If conventional electrode design is used, then manufacturing is simpler, but reliability deteriorates due to point/edge effect causing premature failure
Solution Approach 1:
The patent applies local quality by creating variations in the electrode structure - specifically, multiple coated segments with different spatial positions and orientations. This local variation in electrode configuration distributes electrical pressure evenly across all segments, preventing the point/edge effect that causes premature failure in conventional uniform electrode designs
Solution Approach 2:
The electrode segments are arranged asymmetrically in space with varying distances from the cathode and different orientations. This asymmetric configuration prevents concentration of electrical pressure at any single point or edge, thereby improving reliability while maintaining manufacturing feasibility through standard assembly techniques
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 design extends the lifespan of the electrodes, reduces maintenance costs, and increases chlorine generation efficiency while maintaining reliability and adaptability for pool use.
Implementation Method 1
At the heart of the modern automated chlorinator is an electrolytic cell. A typical such cell includes two electrodes, an anode and a cathode in a salt solution as described above with respect to the '753 patent. Once electrical power is applied to the electrodes, a chemical reaction begins. In a salt (NaCl) solution, the Cl is stripped out and floats freely in the water, safely cleaning the pool water.
Implementation Method 2
both the length and the width of the anode exceed the length and the width of the cathode... encourages efficient operation and reliable service... distributing electrical pressure evenly and minimizing point/edge degradation
Data Source
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AI summary
Disclosed herein is an improved electrolytic cell (20). The cell (20) includes at least one pair of electrodes, an anode (22) and a cathode (24). In general the anode (22) includes at least one dimension, which is substantially greater than the cathode (24). In an exemplary embodiment, the length and the width of the anode are greater than the length and width of the cathode. In a first embodiment of a multi-cell chlorine generator, unequal dimension electrodes are stacked together. In a second embodiment of such a generator, the electrodes are of equal dimensions. In another exemplary embodiment of the improved electrolytic cell in accordance with this invention, the cathode (24) forms a U-shaped member and the anode (22) of at least one dimension being greater is located there between.