Patent ID: 6881685

Claim:
A treated-air supplying apparatus for supplying air, which has been subjected to a predetermined treatment, to semiconductor manufacturing apparatuses installed in a clean room, comprising: a first exhaust duct connected to a housing of a first semiconductor manufacturing apparatus which exhausts air having a temperature substantially equal to a temperature of air in the clean room; a second exhaust duct connected to a housing of a second semiconductor manufacturing apparatus which exhausts air having a temperature higher than a temperature of air in the clean room; an air-supply duct supplying air to inside of the housing of said second semiconductor manufacturing apparatus; an outside-air supplying machine connected to said air-supply duct for cleaning air outside the clean room and supplying the air to said air-supply duct; a first heat exchanger provided between said first exhaust duct and said air-supply duct for dehumidifying by cooling the air supplied from said outside-air supplying machine by performing heat-exchange between the air in said first exhaust duct and the air in said air-supply duct; and a second heat exchanger provided between said second exhaust duct and said air-supply duct for heating the air dehumidified by said first heat exchanger by performing heat-exchange between the air in said second exhaust duct and the air in said air-supply duct.