Generator

A generator comprising,

• a driving section provided with an impeller received in a casing, which is formed so as to allow the fluid at high temperature and under high-pressure to flow in an inlet and to allow the same to flow out of an outlet, and adapted to rotate the impeller by the flow pressure of the fluid,
• a power generating section consisting of a rotor and a stator coil,
• a driving shaft having one end for fixing the impeller and the other end for fixing the rotor,
• a partitioning wall for hermetically partitioning the rotor and the stator coil with the rotor contained in a rotor containing chamber formed therein,
• a dust discharging device extending from the rotor containing chamber to inside of the casing, and
• a dust sending-out device which sends out the dust adhered to the rotor toward the dust discharging device,
• wherein electric power is generated at the power generating section by rotating the rotor by the impeller through the driving shaft, and
• wherein the dust sending-out device is a fluid supplying device communicating with the rotor containing chamber, the dust being sent out toward the dust discharging passage by forcibly supplying the same fluid as that which flows in the driving portion with the rotor containing chamber, in a state that the driving portion is stop.