Patent ID: 7975709
Filing Date: 2011-07-12
Classification: B08B,C23C

Abstract:
1. A reactor cleaning apparatus which cleans an inner wall surface of a reactor which produces polycrystalline silicon, a bell jar of the reactor having a dual structure, the reactor cleaning apparatus comprising: a substantially disc-like tray placed in a horizontal state; a drainage hole formed in the tray; a through hole formed along a vertical direction in a central portion of the tray; a flange portion, at an outer peripheral portion of the tray, on which a lower opening edge of the bell jar is placed; a shaft provided through the through hole of the tray so as to be rotatable around an axis and movable in the vertical direction; a nozzle device provided at an upper end of the shaft to spray a cleaning water at high pressure in three-dimensional directions; a drive mechanism provided to rotate the shaft and move the shaft in the vertical direction; and steam piping provided so as to be capable of supplying the steam within the bell jar.