UV Source Sleeve Cleaning With pH-Sensitive Acid Release
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Solution Overview
Problem
Conventional UV disinfection systems face issues with fouling of UV-transparent materials, leading to reduced UV light output, and existing acid-based cleaners suffer from leakage and concentration limitations, necessitating a controlled release mechanism for effective cleaning.
Innovation Solution
Encapsulating an acidic cleaning composition in a pH-sensitive polymer coating that dissolves at a target pH to release the cleaning agent, allowing for controlled acid delivery to clean UV-transparent surfaces without leakage.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If acid-based cleaners are used to clean UV-transparent surfaces, then cleaning effectiveness is improved, but leakage and concentration control become problematic
Solution Approach 1:
A pH-sensitive polymer coating serves as an intermediary between the acid composition and the environment. The coating encapsulates the acid, preventing leakage, and controls its release only when pH conditions indicate fouling presence, thus eliminating harmful acid leakage while maintaining cleaning effectiveness
Solution Approach 2:
The harmful property of acid leakage is extracted and separated from the cleaning function by enclosing the acid within a pH-sensitive polymer matrix. The acid is taken out of direct contact with the environment and only released under controlled pH-triggered conditions
2Reliability
If conventional cleaners are applied continuously, then cleaning coverage is improved, but material degradation and chemical loss increase
Solution Approach 1:
The pH-sensitive polymer coating enables periodic, on-demand release of acid composition based on pH triggers indicating fouling conditions. This replaces continuous cleaner application with periodic action, maintaining cleaning coverage while minimizing acid loss through controlled release timing
Solution Approach 2:
The system performs self-service cleaning by using pH changes in the environment as automatic triggers for acid release. The pH-sensitive coating detects fouling conditions and autonomously releases the appropriate amount of acid, eliminating the need for continuous external application and reducing chemical loss
3Adaptability or versatility
If pH-sensitive polymer coating is used to encapsulate acid composition, then controlled release is improved, but device complexity increases
Solution Approach 1:
The system exploits parameter changes in pH to control acid release. The pH-sensitive polymer coating changes its properties (from intact to dissolved) in response to pH variations, providing adaptive controlled release without requiring complex mechanical or electronic control mechanisms, thus balancing versatility with simplicity
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 system effectively maintains UV light transmission by periodically releasing acid to clean fouled surfaces, ensuring consistent disinfection performance while minimizing material degradation and acid loss.
Implementation Method 1
the polymer material dissolves at a pH above a target value above the polymer material pH dissolution point, wherein the dissolving releases the cleaning composition
Data Source
AI summary
An embodiment provides a device for cleaning a sleeve of an ultraviolet light source, including: the ultraviolet light source for the disinfection of a fluid, wherein the sleeve surrounds the ultraviolet light source; a cleaning composition encapsulated in a polymer material to form a compound; a canister around and in contact with the sleeve and encapsulating the compound against the sleeve thereby placing the compound in a location adjacent to the sleeve, wherein the polymer material dissolves at a pH above a target value above the polymer material dissolution point releases the cleaning composition. Other aspects are described and claimed.