| 摘要 |
PURPOSE: To prevent the contact between a bell-mouth which is a component of a turbo-fan and an impeller in an air cleaner installed to the ceiling of a clean room etc., even when a fan is fixed, and a main body housing which leads air from the fan to a filter is deformed. CONSTITUTION: A bell-mouth 20 which leads air to the impeller 10 of a turbo-fan 100 and a fan case 30 which covers the suction side periphery of the impeller 10 are molded integrally. The impeller 10 is connected with a motor 40, the motor 40 is fixed to a motor base 50, and the motor base is bonded directly to the fan case 30. Since the components 10, 20, 30, 40, 50 of the turbo-fan 100 are integrated, even when a main body housing 60 to which the turbo-fan 100 is attached is deformed, the contact between the bell-mouth 20 and the impeller 10 is prevented irrespective of the relative positional relationship between the two. |
