Parabolic Reflector Assembly for Electron-Beam Coater Heating
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Solution Overview
Problem
Existing heating methods for electron-beam coaters, such as direct heating and indirect heating, face challenges in maintaining consistent product temperature due to arcing in electron-beam guns and inefficiencies in thermal energy transfer.
Innovation Solution
A parabolic reflector assembly is designed to be mounted above the thermal tray and coating zone in the electron-beam coater, allowing for efficient heating of products by concentrating thermal radiation onto the products while minimizing heat transfer to the manipulator.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Use of energy by moving object
If direct heating with electron beam is used, then heating efficiency is improved, but temperature stability deteriorates due to arcing in electron-beam guns
Solution Approach 1:
The patent introduces a parabolic reflector as an intermediary element that redirects thermal radiation from the thermal tray to the product. This mediator allows the thermal energy to be efficiently transferred to the product without requiring direct electron beam heating, thereby maintaining temperature stability even when electron beam arcing occurs. The reflector concentrates the thermal radiation onto the product surface, ensuring consistent heating.
2Reliability
If indirect heating with thermal tray is used, then temperature stability is improved, but heating efficiency deteriorates due to thermal energy loss
Solution Approach 1:
The patent employs a parabolic reflector with a specific curved geometry to concentrate thermal radiation. The parabolic shape is mathematically optimized to reflect and focus thermal energy from the thermal tray onto the product surface, maximizing the concentration of thermal radiation and minimizing energy loss to the surrounding environment. This curved geometry ensures that thermal energy is directed precisely where needed.
Solution Approach 2:
The patent adds a spatial dimension to the heating system by positioning the parabolic reflector above the product and thermal tray arrangement. The reflector extends vertically into the third dimension, creating a focused thermal pathway that concentrates radiation from the thermal tray onto the product from above. This dimensional arrangement optimizes thermal energy distribution and reduces lateral heat loss.
3Use of energy by moving object
If thermal hood is used to concentrate thermal energy, then heating efficiency is improved, but manipulator components overheat and fail prematurely
Solution Approach 1:
The patent applies local quality by directing thermal radiation selectively onto the product surface while leaving the manipulator components in cooler zones. The parabolic reflector is positioned and shaped to focus thermal energy precisely on the product, creating a localized high-temperature zone only where needed for heating. The manipulator arms and sockets remain outside this concentrated thermal zone, maintaining their structural integrity.
Solution Approach 2:
The patent segments the thermal zones in the coating chamber by using the parabolic reflector to create a distinct heated zone for the product while keeping the manipulator components in a separate, cooler zone. This spatial segmentation allows the product to receive intense thermal radiation for efficient heating while the manipulator mechanisms operate in a thermally benign environment, preventing overheating and premature failure.
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 parabolic reflector assembly effectively maintains consistent product temperature and reduces thermal stress on the manipulator, achieving higher heating efficiency and longer component lifespan.
Implementation Method 1
the reflector is parabolic and is configured to move along the vertical axis with a change in the size of the reflected heat spot on the product subjected to deposition
Implementation Method 2
the reflector is parabolic and is configured to move along the vertical axis with a change in the size of the reflected heat spot on the product subjected to deposition
Implementation Method 3
Indirect heating is devoid of this drawback, since the electron beam heats a massive intermediate body
Data Source
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AI summary
The present invention relates to the field of heating products in the manipulator of electron-beam coaters, such as an apparatus for applying ceramic coatings on products, including turbine vanes of gas turbine engines, in particular, to a reflector assembly for performing said heating. A reflector assembly has been developed for heating products in the manipulator of electron-beam coaters, in which the reflector is mounted above the thermal tray and above the coating zone, wherein the reflector is parabolic and is arranged to move along the vertical axis with a change in the size of the reflected heat spot on the product subjected to deposition. Thus, a reflector assembly has been developed with the design ensuring the achievement of a technical result, which consists in the effective heating of the products fixed in the manipulator sockets, depending on their size, as well as in reducing the thermal effect on the manipulator itself.