Electrodeless Lamp Toroidal Core Miniaturization
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Solution Overview
Problem
Existing electrodeless closed core induction lamps are physically large, inefficient, and expensive due to their cumbersome geometry, limited light output versatility, and high manufacturing costs, making them unsuitable for commercial and residential use.
Innovation Solution
A cost-effective design for electrodeless closed core induction lamps featuring a tubular bulb with a bifurcated structure and a toroidal ferrite core, allowing for efficient plasma excitation and electromagnetic field coupling, with a deformable spool for easy assembly and a graphene-coated excitation chamber for improved performance and miniaturization.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Volume of moving object
If traditional external closed electromagnetic core induction lamp design is used, then electromagnetic field coupling is achieved, but the lamp becomes physically large and cumbersome
Solution Approach 1:
The discharge tube is positioned inside the electromagnetic core, with the core forming a toroidal structure that encloses the tube. This nested configuration allows the electromagnetic field to be contained and concentrated around the discharge tube, achieving efficient coupling while minimizing the overall lamp volume and eliminating the need for large external cores.
Solution Approach 2:
The invention transitions from external core placement to internal core configuration, where the electromagnetic core wraps around the discharge tube in a toroidal geometry. This dimensional reorganization concentrates the magnetic field path through the core and around the tube, improving field coupling efficiency while reducing the lamp's external dimensions.
2Ease of manufacture
If traditional induction lamp geometry is used, then plasma excitation is achieved, but manufacturing cost increases
Solution Approach 1:
The lamp is divided into distinct functional modules: a separate discharge tube containing the gas fill and phosphor coating, and a separate electromagnetic core that can be formed from ferrite material. This segmentation allows each component to be manufactured independently using optimized processes, then assembled together, reducing overall manufacturing complexity and cost while maintaining plasma excitation efficiency.
Solution Approach 2:
The invention optimizes the electromagnetic core's magnetic permeability and geometric parameters to enhance plasma excitation efficiency. By carefully selecting core material properties and dimensions, the design achieves effective plasma generation at lower power levels, improving light output efficiency while controlling manufacturing costs through parameter optimization rather than complex structures.
3Adaptability or versatility
If conventional induction lamp design is used, then electromagnetic radiation is generated, but light output versatility is limited
Solution Approach 1:
The discharge tube is designed with a phosphor coating that can be formulated to emit different wavelengths of light, allowing the same basic lamp structure to produce various types of electromagnetic radiation including visible light, ultraviolet, or infrared depending on the phosphor composition. This multi-functionality enables versatile light output applications without sacrificing the energy-efficient plasma excitation mechanism.
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 design results in a smaller, more efficient, and cost-effective lamp that generates ultraviolet, visible, or infrared light, appealing for broader applications and reducing manufacturing complexity while maintaining high performance.
Implementation Method 1
an external electromagnetic closed core induction lamp that usually operate at the low radio frequency of 250 kHz to 300 kHz
Implementation Method 2
a low pressure gas discharge plasma is excited by an externally generated electromagnetic field
Implementation Method 3
The inner surface of the discharge tube is coated with a phosphor which emits visible light when irradiated by photons emitted by the excited mercury gas atoms
Data Source
AI summary
The present invention provides a bulb (100, 110, 120, 130, 140, 140′) an excitation chamber (200, 210, 220, 230, 230′) a ferrite core (300, 310, 310′), a spool (400, 410); an assembly or subassembly of such components, and a lamp (100, 1100, 1200, 1300, 1400, 1500, 1600, 1600′, 1600″, 1700, 1800) for producing electromagnetic radiation, such as in the light spectrum, UV or IR.