| 摘要 |
PURPOSE:To prevent the abnormal deformation, etc., by their own rotation, of expanding means effectively provided in a refrigerant supply pipe and a refrigerant exhaust pipe. CONSTITUTION:A refrigerant supply pipe 17 which supplies a refrigerant to be supplied from outside through an antidrive-side shaft to the trap part of a coil fitting shaft, and a refrigerant exhaust pipe 18b which exhausts the refrigerant in the trap part of the coil fitting shaft to the outside through the inside of the antidrive-side end shaft after passing the refrigerant through the cooler of a torque tube, are bent, and parts of these pipes 17, 18b are arranged at the position of the axis 20 of a rotation center or in its vicinity. And the expanding means 19 of these pipes 17 and 18b are arranged at this position. The expanding means 19 are on the axis of the rotation center even if the whole of the rotor rotates, and centrifugal forces acting on these expanding means 19 on the basis of the deflections from the axis of the rotation center are greatly reduced, and it become possible to prevent the abnormal deformation, etc., of these expanding means 19. |
