PROBLEM TO BE SOLVED: To improve efficiency of a decontamination process of the inside of a chamber to be decontaminated and an intake filter.SOLUTION: An isolator includes: the chamber to be decontaminated including an inlet and an outlet provided with intake and discharge filters, respectively a first flow path through which outside air is taken into the chamber via the intake filter a second flow path through which gas in the chamber is discharged via the discharge filter a first blower to take in the outside air to the chamber through the first flow path, and produce an air current to discharge the gas through the second flow path a decontaminating gas supply unit to supply decontaminating gas into the chamber without flowing through the intake and discharge filters a third flow path to connect the intake and discharge filters at an exterior of the chamber and a second blower to produce an air current to circulate the gas through the intake and discharge filters and third flow path, when the decontaminating gas is supplied to the chamber.COPYRIGHT: (C)2013,JPO&INPIT【課題】 除染対象室内および吸気フィルタの除染処理の効率を向上させる。【解決手段】 吸気フィルタを備えた吸気口および排気フィルタを備えた排気口を有する除染対象室と、吸気フィルタを介して除染対象室内に外気を吸気する第1の流路と、排気フィルタを介して除染対象室内の気体を排気する第2の流路と、第1の流路を介して除染対象室内に外気を吸気するとともに、第2の流路を介して除染対象室内の気体を排気する気流を発生させる第1の送風機と、吸気フィルタおよび排気フィルタを介さずに除染対象室内に除染ガスを供給する除染ガス供給部と、除染対象室外で吸気フィルタと排気フィルタとを接続する第3の流路と、除染対象室内に除染ガスが供給される場合に、吸気フィルタ、排気フィルタ、および第3の流路を介して除染対象室内の気体を循環させる気流を発生させる第2の送風機と、を有する。【選択図】 図1
