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    APPARATUS AND METHOD FOR CONTINUOUS CRYSTAL PULLING
    4.
    发明公开
    APPARATUS AND METHOD FOR CONTINUOUS CRYSTAL PULLING 审中-公开

    公开(公告)号：EP3960910A1

    公开(公告)日：2022-03-02

    申请号：EP20198978.7

    申请日：2020-09-29

    申请人： Jinko Green Energy (Shanghai) Management Co., Ltd ,  JINKO SOLAR CO., LTD

    发明人： YANG, Jun ,  SHANG, Weize ,  BAI, Xiaolong

    IPC分类号： C30B15/00 ,  C30B15/12 ,  C30B15/30 ,  C30B29/06 ,  C30B15/02

    摘要： Provided is an apparatus and a method for continuous crystal pulling. The apparatus includes: a crucible including a first sub-crucible and a second sub-crucible located at inner side of the first sub-crucible; a draft tube located above the crucible; and a delivery duct supplying materials to the crucible. A ratio of inner diameter of the second sub-crucible to outer diameter of the draft tube is ≥1.05. In a first state, a distance between bottom surface of the draft tube and bottom surface of the crucible is a first distance, in a second state, a distance between bottom surface of the draft tube and bottom surface of the crucible is a second distance. The first distance is greater than the second distance. In the first and second states, a distance between a crystal-liquid interface in the crucible and the bottom surface of the draft tube remains substantially unchanged.