Anti-cracking suction device comprising outer cylinder, inner cylinder, suction tube, and first gap between inner and outer cylinders

US12421618B2 · kind B2 · utility

Assignee

• TCL ZHONGHUAN RENEWABLE ENERGY TECHNOLOGY CO., LTD. · CN

Inventors

• Zhenyu Liu · Greensburg, US
• Jian Xu · Nanhu, CN
• Zilong Zhao · Lo Wu, CN
• Long XIANG · Tianjin, CN
• Jianping Wang · Västerås, SE
• Jianping Gao · Nanjing, CN

Key dates

• Filing date: Nov 25, 2022
• Grant date: Sep 23, 2025
• Expiry date: Nov 25, 2042

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C30B29/06
• WIPO field: Surface technology, coating
• WIPO sector: Chemistry

Abstract

An anti-cracking suction device for Czochralski single crystal is provided, wherein the device includes an outer cylinder, an inner cylinder disposed in the outer cylinder, a suction tube, and a first gap. An upper portion of the suction tube extends into the inner cylinder from a bottom of the outer cylinder, a lower portion of the suction tube is disposed outside the outer cylinder. The first gap is disposed between a bottom of the inner cylinder and the outer cylinder, and is configured to cushion a thermal expansion of the bottom of the inner cylinder to reduce stress at where the suction tube is connected with the inner cylinder, in a case that silicon liquid is sucked into the inner cylinder by the suction tube and accumulated at the bottom of the inner cylinder.