| 摘要 |
The machine has a rotor, and a stator (28) including a swirl passage to guide a secondary flow of a cooling medium to a pre-swirl nozzle. A control unit completely or partially made of shape-memory alloy is arranged in an area of the pre-swirl nozzle to control the secondary flow based on temperature in an automated manner. The control unit includes a curved membrane made of shape-memory alloy and projected into the swirl passage, where the membrane changes flow cross section of the swirl passage by changing a curvature of the membrane. The control unit is selected from a group consisting of a membrane, an adjusting device (37), a wall element (38), a guide plate (39), an adjusting element (40), torsion elements, a cover, cover elements, and an elongation unit. |
