UV Radiator Nanoparticle Coating for Biofilm Prevention
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Solution Overview
Problem
Existing UV emitter units for food processing and water treatment face efficiency decline due to contamination and biofilm formation, requiring frequent cleaning and replacement, which is time-consuming and costly.
Innovation Solution
Applying a dirt-repellent coating made of silicon dioxide or titanium dioxide nanoparticles to the UV emitter tube and cladding tube, which reduces surface roughness and prevents dirt deposition, maintaining high radiation output over extended periods without the need for frequent cleaning.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Object-affected harmful factors
If a mechanical filter is installed in front of the radiator unit to reduce contamination, then the deposition of suspended matter is reduced, but the filters require regular replacement which is time-consuming and cost-intensive
Solution Approach 1:
The harmful function of mechanical filters (requiring replacement) is extracted and replaced by applying a dirt-repellent coating directly to the radiator tube surface. This coating extracts the contamination prevention function from the filter system and integrates it into the radiator tube itself, eliminating the need for separate filter components and their maintenance.
Solution Approach 2:
The radiator tube surface is given self-cleaning properties through the dirt-repellent coating made of silicon dioxide or titanium dioxide nanoparticles. The coating enables the surface to automatically repel contaminants without requiring external intervention or separate filtering components, making the system self-maintaining.
2Reliability
If the UV lamp is protected from contamination by being arranged in a cladding tube, then the radiator tube is protected from direct contamination, but the cladding tube itself becomes exposed to contamination and biofilm formation
Solution Approach 1:
The dirt-repellent coating is applied specifically to the outer surface of the cladding tube where contamination occurs, while the inner surface remains transparent for UV transmission. This local application of different properties (dirt-repellent on outer surface, transparent on inner surface) resolves the contradiction by protecting against contamination while maintaining UV transmission.
Solution Approach 2:
The cladding tube system becomes a composite structure with the base quartz glass tube combined with a nanoparticle coating layer. This composite material provides both the original UV transmission properties of quartz glass and the dirt-repellent properties of silicon dioxide or titanium dioxide nanoparticles.
3Productivity
If the radiator tube is cleaned regularly to maintain transparency, then the radiation efficiency is maintained, but the maintenance is time-consuming and costly
Solution Approach 1:
The dirt-repellent coating is applied in advance to the radiator tube surface before operation begins. This preliminary protective action prevents contamination accumulation during operation, eliminating the need for subsequent cleaning interventions and maintaining continuous high radiation efficiency.
Solution Approach 2:
Instead of using expensive and time-consuming cleaning processes, the invention employs a durable nanoparticle coating that provides long-term contamination resistance. The coating acts as a disposable protective layer that maintains performance without requiring recurring maintenance interventions.
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 coated UV emitter units maintain high transparency and radiation efficiency for longer durations, reducing maintenance costs and extending the operational life by preventing contamination and biofilm formation.
Implementation Method 1
which reduces surface roughness and prevents dirt deposition
Implementation Method 2
dirt-repellent coating which is produced using silicon dioxide or titanium dioxide nanoparticles
Implementation Method 3
UV emitter with a emitter tube made of quartz glass
Implementation Method 4
the transparency of the lamp tube and thus the efficiency of the UV irradiation
Implementation Method 5
The use of this UV lamp unit enables chemical decomposition of odors and suspended matter
Implementation Method 6
A coating produced from silicon dioxide or titanium dioxide nanoparticles has high UV stability
Data Source
Figure 1~2
AI summary
Disclosed are radiator units for generating ultraviolet radiation, in particular for use in grocery processing or in water processing, comprising a UV-radiator with a radiator tube made of quartz glass, or comprising a UV-radiator which is surrounded by a cylindrical cladding tube made of quartz glass and which has a radiator tube made of quartz glass. Proceeding hence, in order to provide a radiator unit for generating ultraviolet radiation, which is suitable for emitting a high radiation power for a long operation period and which is also simple and cheap to produce, a dirt- and water-resistant coating is applied to the radiator tube and/or cladding tube, which coating is produced using silicon dioxide or titanium dioxide nanoparticles.