Light Sintering Device Cooling Hollow for Filter Protection
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Solution Overview
Problem
Conventional sintering processes, particularly thermal sintering, are inefficient and costly when applied to flexible substrates due to high-temperature requirements, leading to productivity issues and increased manufacturing costs, and pose risks of damaging optical filters used in light sintering devices.
Innovation Solution
A light sintering device with a housing containing a cooling hollow filled with water, where a beam guide and optical filter are mounted to guide and filter sintering light, respectively, allowing direct contact with cooling water to prevent overheating and minimize steam and bubble formation, thereby enhancing surface plasma effects and maintaining device integrity.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Reliability
If conventional thermal sintering is used, then sintering can be performed, but the process requires high temperature which damages flexible substrates and increases manufacturing cost
Solution Approach 1:
The patent replaces thermal sintering with light sintering using a laser beam. The laser light directly sinters the paste material on flexible substrates without requiring high-temperature thermal fields, thereby preserving substrate integrity while achieving effective sintering.
Solution Approach 2:
The patent changes the sintering parameter from thermal energy to optical energy. By using laser light with specific wavelengths and intensities, the process achieves sintering at lower temperatures that are compatible with flexible substrates, fundamentally altering the energy delivery mechanism.
2Productivity
If light sintering is used, then sintering efficiency is improved, but the optical filter may be damaged due to heat accumulation
Solution Approach 1:
The patent introduces a cooling system as an intermediary between the light sintering process and the optical filter. This cooling mechanism absorbs excess heat and prevents it from reaching the optical filter, allowing high-efficiency sintering while protecting the filter from thermal damage.
Solution Approach 2:
The patent implements preliminary cooling measures by positioning cooling channels and fluid systems before the heat can accumulate to damaging levels. The cooling system is pre-configured to intercept and remove heat during the sintering process, preventing thermal damage to the optical filter.
3Reliability
If the cooling hollow is not fully filled with water, then device structure is simpler, but steam and bubbles form causing light path distortion and device damage
Solution Approach 1:
The patent designs the cooling hollow with inlet and outlet positions that ensure complete water filling before operation begins. This preliminary configuration prevents air pockets and bubbles from forming during operation, eliminating light path distortion and preventing bubble explosions that could damage the device.
Solution Approach 2:
The patent optimizes the local quality of the cooling system by strategically positioning the inlet and outlet of the cooling hollow. The inlet is placed at the lowest point and the outlet at the highest point to ensure complete water filling and proper circulation, creating optimal cooling conditions without requiring complex additional structures.
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 solution improves sintering efficiency, prevents optical filter delamination, minimizes path distortion of sintering light, and reduces the risk of device damage from bubble explosions, while maintaining effective cooling of both the beam guide and optical filter.
Implementation Method 1
a housing (10) having a cooling hollow (10h) through which cooling water (W) flows; a beam guide (20) mounted on one side of the housing (10) to form one wall of the cooling hollow (10h)... and an optical filter (30) mounted on the other side of the housing (10) to form the other wall of the cooling hollow (10h)
Implementation Method 2
an optical filter (30) mounted on an opposite side of the housing to face the beam guide to form an opposite wall of the cooling hollow, and configured to filter a specific wavelength band of the sintering light
Implementation Method 3
a housing having a cooling hollow through which cooling water flows; an inlet for introducing the cooling water into the cooling hollow, and an outlet for discharging the cooling water introduced into the cooling hollow
Data Source
AI summary
A light sintering device is provided. The light sintering device can comprise: a housing having, therein, a cooling hollow portion in which cooling water flows; a beam guide mounted on one side of the housing so as to form one wall of the cooling hollow portion, and guiding sintered light; and an optical filter mounted on the other side of the housing so as to face the beam guide, thereby forming the other wall of the cooling hollow portion, and filtering out a specific wavelength of the sintered light.