Triangular RF Screen Mesh for UV Lamp Deformation Resistance
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Solution Overview
Problem
Existing RF screens in microwave powered UV lamp systems face issues with deformation and lower UV light transmittance, leading to reduced reliability and increased downtime.
Innovation Solution
The use of a RF screen with a mesh pattern of triangular openings, specifically isosceles, equilateral, or right triangles, which enhances stress resistance and UV light transmittance, reducing deformation and improving system efficiency.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If a conventional RF screen with non-triangular mesh pattern is used, then the screen structure is simpler to manufacture, but the screen experiences more deformation and has lower UV light transmittance
Solution Approach 1:
The patent changes the geometric parameters of the mesh pattern from conventional shapes (circular, square, rectangular) to triangular shapes. This parameter change in the mesh geometry provides superior deformation resistance and higher UV light transmittance while maintaining manufacturing feasibility through standard screen fabrication processes
Solution Approach 2:
The patent employs a composite structure combining the triangular mesh pattern with appropriate screen materials to achieve optimal balance between mechanical strength (deformation resistance) and optical properties (UV light transmittance). The mesh design itself acts as a composite geometric structure that distributes stress effectively
2Productivity
If a conventional RF screen with non-triangular mesh pattern is used, then the manufacturing process is simpler, but the UV light output is reduced
Solution Approach 1:
The triangular mesh pattern parameters (shape, size, spacing) are optimized to maximize UV light transmittance. The geometric configuration of triangular openings allows for superior light transmission characteristics compared to conventional mesh patterns, directly improving UV light output while remaining manufacturable
Solution Approach 2:
The mesh pattern is designed with specific triangular opening sizes and densities that exceed conventional designs in terms of light transmission capability. The triangular geometry provides partial area optimization that enhances UV light output beyond what is achieved with standard mesh patterns
3Reliability
If an RF screen with triangular mesh pattern is used, then UV light transmittance is improved, but the screen may require more precise manufacturing tolerances
Solution Approach 1:
The triangular mesh pattern is designed with parameters that optimize UV light transmittance while establishing practical manufacturing tolerance ranges. The geometric parameters are selected to achieve high transmittance without requiring extreme precision, balancing performance with manufacturability
Solution Approach 2:
The triangular mesh pattern provides homogeneous stress distribution and uniform light transmission characteristics across the screen surface. This homogeneity reduces sensitivity to local manufacturing variations, allowing for more relaxed tolerance requirements compared to non-uniform patterns
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 triangular mesh pattern increases UV light output and reduces deformation, enhancing the reliability and efficiency of the UV lamp system.
Implementation Method 1
The conductive material defines a predetermined mesh pattern of individual openings across substantially an operative area of the screen... capture and seal the RF energy within the cavity while permitting light energy to be transmitted through the screen openings
Implementation Method 2
The microwave energy or RF energy is guided into a cavity where a UV bulb is positioned to absorb the RF energy and change to a plasma state. The plasma produces radiation energy in the UV lamp system in the form of UV light
Data Source
AI summary
A radio frequency (RF) screen for a microwave powered ultraviolet (UV) lamp system is disclosed. In one example, a disclosed RF screen includes: a sheet comprising a conductive material; and a frame around edges of the sheet. The conductive material defines a predetermined mesh pattern of individual openings across substantially an operative area of the screen. Each of the individual openings has a triangular shape.