| 摘要 |
PURPOSE:To reduce the turning force resistance of a liquid-sealing submersible motor, by closing the opening section of a slot and by using a wedge formed so that the inner peripheral face of a stator may be smoothed. CONSTITUTION:A slot 4 is provided through the inner peripheral side 10 confronting a rotor 3 via space 14. At the bottom of the slot 4, in the axial direction, stator coils 7 are collected in a trapezoidal shape and are inserted in insulating paper 8 to come in contact with a shoulder section 9 under a mouth section 6, and a formed wedge 11 for holding the stator coils 7 down is inserted in the axial direction. The formed wedge 11 is provided with the section 12 holding coils down for a mechanism for retaining the stator coils 7, and with a slot-closing section 13 which is smoothed to be a regular circle on the opening section 5 and on the inner periphery 10 of a core 2 and which comes in contact with the mouth section 6. In this manner, the fluid resistance of sealed liquid between the rotor and the stator, which is generated along with the rotation of the rotor is reduced. |
