Fan filter unit, sterilization apparatus and clean room

A sterilization apparatus having a working space, a fan filter unit configured to supply clean air to the working space, and a sterilizing gas charging unit on a suction side of air of the fan filter unit,

• wherein the fan filter unit includes:
• a fan unit section constituted by an air blower and a pressurization chamber;
• a dust removal filter provided on a downstream side of the fan unit section;
• a passage bypassing the dust removal filter;
• and
• an opening and closing mechanism of the passage,
• wherein by opening the opening and closing mechanism, an air flow not passing through the dust removal filter can be supplied to a secondary side of the fan filter unit;
• wherein an opening equipped with the opening and closing mechanism to discharge the air flow is provided on a side surface of the pressurization chamber of the fan filter unit, and
• wherein the passage connects the opening and the working space.

A clean room having an air blowing path equipped with an air blower and a sterilization apparatus, and a working chamber to which air is blown via the sterilization apparatus connected to the air blowing path, the clean room comprising:

• a freely openable and closable opening and closing unit;
• and
• a second air blowing path connected to a sterilizing gas insertion unit, passing through the opening and closing unit opened from the air blower without passing through the sterilization apparatus and connected to the working chamber;
• wherein the sterilization apparatus has a fan filter unit configured to supply clean air to the working chamber, and a sterilizing gas charging unit on a suction side of air of the fan filter unit;
• wherein the fan filter unit includes:
• a fan unit section including the air blower and a pressurization chamber;
• a dust removal filter provided on a downstream side of the fan unit section;
• a passage bypassing the dust removal filter;
• and
• an opening and closing mechanism of the passage,
• wherein by opening the opening and closing mechanism, an air flow not passing through the dust removal filter can be supplied to a secondary side of the fan filter unit,
• wherein an opening equipped with the opening and closing mechanism to discharge the air flow is provided on a side surface of the pressurization chamber of the fan filter unit, and
• wherein the passage connects the opening and the working chamber.