半导体制造高温炉管快速冷却技术与效率提升研究

Research on Rapid Cooling Technology and Efficiency Improvement of High-Temperature Furnace Tubes in Semiconductor Manufacturing

摘要: 高温炉管是半导体晶圆热氧化、退火热处理的核心专用设备，冷却性能直接决定设备生产效率。传统单层保温被动冷却炉管冷却速率不足1℃/s，炉内热场分布不均，长时间降温易引发晶圆翘曲、杂质扩散失控等工艺失效，制约5 nm及以下先进制程产能释放。以12英寸立式高温炉管为对象，剖析自然散热与外置水冷方案短板，提出三层复合保温散热–气水耦合冷却–多测点智能闭环温控三位一体优化方案，依托仿真曲线与KPI指标开展性能量化对比。理论推演表明：方案冷却速率提升40%，单批次冷却时长压缩至35 min，设备OEE提升50%，热应力缺陷风险降低80%，能耗与运维成本同步下降。该方案已获专利CN201210138202.3，可为热处理炉升级提供理论与工程参考。

Abstract: High‑temperature furnace tubes are key special‑purpose equipment for thermal oxidation and annealing of semiconductor wafers, whose cooling performance determines equipment production efficiency. Conventional passively‑cooled furnace tubes with single‑layer insulation suffer from cooling rate below 1˚C and non‑uniform thermal field. Long‑time cooling induces process failures including wafer warpage and uncontrolled impurity diffusion, limiting capacity for advanced nodes below 5 nm. Taking a 12‑inch vertical high‑temperature furnace tube as the research object, this paper analyzes drawbacks of natural heat dissipation and external water‑cooling schemes, and proposes a three‑in‑one optimization scheme combining three‑layer composite insulation structure, air‑water coupled active cooling and multi‑point intelligent closed‑loop temperature control. Performance is quantitatively compared via simulation curves and KPI indicators. Theoretical deduction shows that the scheme raises cooling rate by 40%, shortens single‑batch cooling time to 35 min, improves OEE by 50% and reduces thermal‑stress‑defect risk by 80%, with lower energy consumption and maintenance costs. This solution is granted Chinese patent CN201210138202.3 and offers theoretical and engineering references for heat‑treatment furnace upgrading.