Patent ID: 8883085

Claim:
An isolator comprising: a chamber to be decontaminated including an inlet provided with an intake filter and an outlet provided with a discharge filter; a first flow path through which outside air is taken into the chamber to be decontaminated via the intake filter; a second flow path through which gas in the chamber to be decontaminated is discharged via the discharge filter; a blower configured to take in the outside air to the chamber to be decontaminated through the first flow path, as well as produce an air current to discharge the gas in the chamber to be decontaminated through the second flow path; a decontaminating gas supply unit configured to supply decontaminating gas into the chamber to be decontaminated without flowing through the intake filter and the discharge filter; a third flow path through which the gas in the chamber to be decontaminated is discharged via the intake filter when the decontaminating gas is supplied into the chamber to be decontaminated; a first valve configured to open/close the first flow path; a second valve configured to open/close the second flow path; a third valve configured to open/close the third flow path; a control unit configured to open the third valve in a state where the blower is stopped while the first and the second valves are closed, so that the gas in the chamber to be decontaminated is discharged, in a case where the decontaminating gas is supplied into the chamber to be decontaminated; and a detoxifying unit provided on the second flow path, the detoxifying unit configured to reduce an amount of decontamination material contained in the decontaminating gas, to be rendered harmless, wherein the second valve is provided between the detoxifying unit and the discharge filter, and the third flow path connects the intake filter and a flow path, in the second flow path, between the detoxifying unit and the second valve.