Excimer Lamp Heat Dissipation via Ceramic Rod
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Solution Overview
Problem
Excimer lamps experience a sharp drop in excitation efficiency due to increased temperature over time, requiring effective heat dissipation and anti-shock features to maintain performance and prevent personal injury during operation.
Innovation Solution
The excimer lamp design incorporates a conductive heat dissipation rod with thermally conductive but electrically non-conductive lamp caps, a light-transparent annular sleeve for gas containment, and a conductive ring net for enhanced heat dissipation, along with anti-shock features like protective sleeves and bayonet connections to prevent electrical shock.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Productivity
If the excimer lamp operates for a period of time, then ultraviolet light is emitted for processing, but the temperature increases causing excitation efficiency to drop sharply
Solution Approach 1:
A heat dissipation rod made of aluminum nitride ceramic is introduced as an intermediary component between the electrode heads and the lamp cap. This heat dissipation rod conducts heat away from the electrode heads through its high thermal conductivity while being electrically isolated from the high voltage circuit, effectively reducing lamp temperature without interfering with the electrical discharge process
Solution Approach 2:
The lamp cap is constructed from a composite structure combining aluminum nitride ceramic (for heat dissipation) and epoxy resin coating (for electrical insulation). This composite material approach allows simultaneous achievement of thermal conduction and electrical insulation functions in a single component, resolving the contradiction between heat dissipation and electrical safety
2Use of energy by moving object
If high voltage is applied to excite the excimers, then ultraviolet light is generated, but electrical shock hazard increases
Solution Approach 1:
The aluminum nitride ceramic heat dissipation rod serves as an intermediary that provides electrical isolation between the high voltage electrode heads and the external environment. The ceramic material's inherent electrical insulation properties block the high voltage from reaching external surfaces, while still allowing thermal energy to pass through
Solution Approach 2:
The electrical insulation function is extracted and separated from the structural components by applying an epoxy resin coating on the outer surface of the lamp cap. This dedicated insulation layer specifically addresses the electrical shock hazard without affecting the mechanical structure or heat dissipation pathways
3Temperature
If heat dissipation structures are added to maintain excitation efficiency, then temperature control improves, but device complexity increases
Solution Approach 1:
The aluminum nitride ceramic heat dissipation rod performs multiple functions simultaneously: it conducts heat away from the electrode heads, provides electrical insulation from the high voltage circuit, and serves as a structural support element connecting the electrode heads to the lamp cap. This multi-functionality reduces the need for separate components, thereby limiting the increase in device complexity
4Temperature
If thermally conductive materials are used for lamp caps, then heat dissipation improves, but electrical conductivity increases creating safety hazards
Solution Approach 1:
The lamp cap utilizes a composite material system where the inner core is made of aluminum nitride ceramic (providing thermal conduction) and the outer surface is coated with epoxy resin (providing electrical insulation). This composite structure allows the material to exhibit both high thermal conductivity and high electrical resistivity simultaneously, resolving the contradiction between heat dissipation and electrical safety
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 significantly improves heat dissipation efficiency, stabilizes the excitation efficiency, and ensures continuous, stable ultraviolet light emission while preventing personal injury from electrical shock.
Implementation Method 1
a conductive heat dissipation rod having a first end and a second end, and extending in a longitudinal direction from the first end to the second end... significantly improves heat dissipation efficiency
Implementation Method 2
A first lamp cap is connected to the first end of the conductive heat dissipation rod, the first lamp cap being thermally conductive but electrically non-conductive
Implementation Method 3
the first lamp cap being thermally conductive but electrically non-conductive
Implementation Method 4
A light-transparent annular sleeve extends in the longitudinal direction, the light-transparent annular sleeve arranged around the conductive heat dissipation rod and defining a gas containment space filled with an excimer gas
Implementation Method 5
A conductive annular net is arranged around the light-transparent annular sleeve and extends in the longitudinal direction... significantly improves heat dissipation efficiency
Implementation Method 6
uses high voltage and high frequency electricity outside the lamp tube to bombard the excimer gas in the lamp tube to emit ultraviolet rays
Data Source
AI summary
An excimer lamp, which includes a first lamp cap, a second lamp cap, a first electrode head, a second electrode head, a conductive heat dissipation rod, a light-transparent annular sleeve, and a conductive annular net. The heat dissipation rod and conductive annular net are respectively connected to the first and second electrode heads to excite an excimer gas in the light-transparent annular sleeve. Inside the excimer lamp the, a large amount of heat can be conducted and dissipated through the conductive heat dissipation rod, and then through the heat dissipation of the first lamp cap or by heat conductive annular rings between sections of the lamp. At the same time, the conductive annular nets can also conduct and dispatch a large amount of above mentioned heat; the heat may be further conducted and dispatched through the second lamp cap or through the heat conductive annular rings, if present.