Process Chamber Baffle Layout for Uniform Upper Lamp Cooling
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Solution Overview
Problem
Existing process chambers face challenges in effectively cooling upper lamps due to increasing power levels, necessitating enhanced cooling solutions.
Innovation Solution
A baffle arrangement is introduced in the process chamber to separate the cooling fluid flow into upper and lower sections, focusing the flow to enhance cooling of upper lamps while maintaining uniformity and adjusting based on operating conditions.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Temperature
If cooling fluid flow is increased to enhance lamp cooling, then cooling efficiency improves, but flow uniformity deteriorates
Solution Approach 1:
The outer passage is segmented into an upper section and a lower section by the baffle, allowing independent flow control in each section. This segmentation enables the cooling fluid to be distributed more uniformly while maintaining high cooling efficiency, as the baffle directs flow through specific paths around the lamp module.
Solution Approach 2:
The baffle acts as an intermediary element that mediates the cooling fluid flow between the upper and lower sections. It controls and directs the flow to achieve both high cooling efficiency and uniform distribution, preventing direct uncontrolled flow that would cause non-uniform cooling.
2Productivity
If lamp power level is increased to improve processing capability, then productivity improves, but cooling demand increases
Solution Approach 1:
The baffle arrangement dynamically controls the cooling fluid flow to adapt to varying lamp power levels. By adjusting the flow distribution through the upper and lower sections, the system can accommodate different cooling demands resulting from different lamp power settings, enabling higher productivity while maintaining effective cooling.
3Temperature
If baffle is positioned close to shroud to focus flow, then cooling efficiency improves, but flow restriction increases
Solution Approach 1:
The baffle is positioned to create local flow focusing in specific areas around the lamp module where cooling is most needed, while maintaining adequate flow quantity through the lower section. This local quality approach ensures high cooling efficiency at critical locations without overly restricting the overall cooling fluid flow quantity.
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 baffle arrangement increases cooling efficiency and uniformity of upper lamps, extending their service life and ensuring consistent performance in processes like epitaxial deposition.
Implementation Method 1
flowing a cooling fluid through the upper chamber assembly so that a portion of the cooling fluid flowing through the lower section flows into the upper section through the gap and a portion of the cooling fluid flowing through the lower section flows under the shroud and to the plurality of upper lamps to provide cooling thereto
Data Source
AI summary
A process chamber equipped with a baffle arranged to enhance cooling of lamps of the process chamber is provided. In one aspect, a process chamber includes an upper housing defining an upper chamber. The process chamber also has a shroud and an upper lamp module having a lamp holder arranged to hold a plurality of upper lamps. The shroud is connected to the upper lamp module. The shroud, the upper lamp module, and the upper housing define an outer passage of the upper chamber. The process chamber also includes a baffle separating the outer passage into an upper section and a lower section. The baffle is arranged to facilitate a flow of a cooling fluid flowing through the lower section to the upper lamps to provide cooling thereto. A method of operating a processing system having a process chamber is also provided.