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    • 41. 发明授权
    • Turbo-molecular pump, substrate processing apparatus, and method for suppressing attachment of depositions to turbo-molecular pump
    • 涡轮分子泵,基板处理装置以及用于抑制沉积物附着于涡轮分子泵的方法
    • US08052376B2
    • 2011-11-08
    • US12057767
    • 2008-03-28
    • Jun YamawakuTsuyoshi Moriya
    • Jun YamawakuTsuyoshi Moriya
    • F04D17/06
    • F04D19/042F04D29/701F05D2260/607Y02T50/675
    • A turbo-molecular pump that enables reliable suppression of attachment of depositions onto component parts thereof. The turbo-molecular pump discharges a deposition-causing gas from a processing chamber. A rotor has a rotor shaft aligned with an exhaust stream. A cylindrical casing houses the rotor therein. A plurality of blade-form rotor blades projects from the rotor orthogonally with respect to the rotor shaft and are divided into a plurality of rotor blade groups. A plurality of blade-form stator blades projects orthogonally with respect to the rotor shaft from a rotor-facing surface and are divided into a plurality of stator blade groups. Gas supply ports are located on an upstream side of the rotor blade group that is located furthest downstream in the exhaust stream, and supply a deposition-suppressing gas which includes gas molecules having a large molecular weight.
    • 涡轮分子泵,其能够可靠地抑制沉积物附着到其组分部分上。 涡轮分子泵从处理室排出沉积物。 转子具有与排气流对准的转子轴。 圆柱形壳体将转子放在其中。 多个叶片形转子叶片相对于转子轴正交地从转子突出并分成多个转子叶片组。 多个叶片形定子叶片相对于转子轴从转子相对表面突出突出并被分成多个定子叶片组。 气体供给口位于转子叶片组的位于排气流中最下游的上游侧,并且供给包含分子量大的气体分子的沉积抑制气体。