PROBLEM TO BE SOLVED: To improve the decontamination efficiency of the inside of a room to be decontaminated and an air intake filter.SOLUTION: An isolator includes: a room to be decontaminated which has an air intake port with an air intake filter and an air discharge port with an air discharge filter a first flow path which takes outside air into the room to be contaminated through the air intake filter a second flow path which discharges gas in the room to be contaminated through the air discharge filter a blower which takes the outside air into the room to be contaminated through the first flow path and produces an air flow discharging the gas in the room to be contaminated through the second flow path a decontaminating gas supply part which supplies a decontaminating gas into the room to be contaminated not through the air intake filter and the air discharge filter and a third flow path which, when the decontaminating gas is supplied into the room to be contaminated, discharges the gas in the room to be contaminated through the air intake filter.COPYRIGHT: (C)2015,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、前記吸気フィルタを介して前記除染対象室内に外気を吸気する第1の流路と、前記排気フィルタを介して前記除染対象室内の気体を排気する第2の流路と、前記第1の流路を介して前記除染対象室内に外気を吸気するとともに、前記第2の流路を介して前記除染対象室内の気体を排気する気流を発生させる送風機と、前記吸気フィルタおよび前記排気フィルタを介さずに前記除染対象室内に除染ガスを供給する除染ガス供給部と、前記除染対象室内に前記除染ガスが供給される場合に、前記吸気フィルタを介して前記除染対象室内の気体を排気する第3の流路と、を有する。【選択図】 図1
