US 12,247,313 B2
Czochralski single crystal furnace for preparing monocrystalline silicon and method for preparing monocrystalline silicon
Ziyang Ou, Jiangxi (CN); Xiaolong Bai, Jiangxi (CN); and Xinyu Zhang, Zhejiang (CN)
Assigned to ZHEJIANG JINKO SOLAR CO., LTD., Zhejiang (CN); and JINKO SOLAR CO., LTD., Jiangxi (CN)
Filed by ZHEJIANG JINKO SOLAR CO., LTD., Zhejiang (CN); and JINKO SOLAR CO., LTD., Jiangxi (CN)
Filed on Dec. 30, 2021, as Appl. No. 17/566,656.
Claims priority of application No. 202110651170.6 (CN), filed on Jun. 11, 2021.
Prior Publication US 2022/0396898 A1, Dec. 15, 2022
Int. Cl. C30B 15/14 (2006.01); C30B 15/20 (2006.01); C30B 29/06 (2006.01)
CPC C30B 15/14 (2013.01) [C30B 15/20 (2013.01); C30B 29/06 (2013.01); Y10T 117/1032 (2015.01)] 9 Claims
OG exemplary drawing
 
1. A Czochralski single crystal furnace for preparing monocrystalline silicon, comprising:
a reaction chamber, and
a first heat-preserving barrel and a second heat-preserving barrel respectively arranged around the reaction chamber, wherein:
a side wall of the first heat-preserving barrel is provided with a first opening, an axial direction of the first heat-preserving barrel is the same as an axial direction of the second heat-preserving barrel, and one of the first heat-preserving barrel and the second heat-preserving barrel is arranged around the other of the first heat-preserving barrel and the second heat-preserving barrel;
the Czochralski single crystal furnace has a first operation state and a second operation state, and the Czochralski single crystal furnace is configured to be switchable between the first operation state and the second operation state; wherein, in response to the Czochralski single crystal furnace being switched between the first operation state and the second operation state, the first heat-preserving barrel moves relative to the second heat-preserving barrel along the axial direction of the first heat-preserving barrel;
in response to the Czochralski single crystal furnace being in the first operation state, a side wall of the second heat-preserving barrel is configured to cover the first opening so as to isolate the reaction chamber from an outside of the Czochralski single crystal furnace; and
in response to the Czochralski single crystal furnace being in the second operation state, the second heat-preserving barrel is configured to expose the first opening, so that the reaction chamber is connected to the outside of the Czochralski single crystal furnace through the first opening.