| 摘要 |
PURPOSE:To prevent the resonance to the stator core of a stator frame and the local temperature rise in the interior by providing a plurality of holes at partition plates of the stator frame, inserting the prescribed tubes to the holes to form coolant medium flow passages. CONSTITUTION:A plurality of partition plates 2 are welded at a suitable interval to the bore surface of a cylindrical stator frame 1, and a stator core 3 is supported through a flat spring 3 to the plates 2. A plurality of holes 5 are opened at the respective plates 2, and the intrinsic vibration of the frame 1 is set to the value lower than the frequency of the forcible vibration of the core 3. The prescribed supply tube 6a, recovery tube 6b and balance tubes 6c1, 6c2 are respectively inserted to the holes 5 to form coolant medium flow passages 6, high pressure coolant medium is fed through the tube 6a to the high pressure chamber 7a in the stator, thereby cooling the core 3 and the coolant medium becomes low pressure by cooling the core 3 is fed from the low pressure chamber 7b in the stator through the tube 6b to a cooler 8, and the pressures between the prescribed high pressure chamber 7a and the low pressure chamber 7b are equalized by the tubes 6c1, 6c2. |
